JP7798350B2 - Door handles such as flat handles - Google Patents

Description

This invention relates to door handles such as flat handles, and more specifically to door handles such as flat handles and L-shaped handles.

Flat handles for opening, closing, and locking doors are widely used on doors for distribution boxes that house electrical distribution boards.
As the above-mentioned flat handle, a type that has a casing with an opening on the front and a lever for opening and closing a door that is provided so that it can be seen and hidden in the opening of the casing, and that can be locked by a locking member provided on the lever to keep the lever stored in the casing and prevent the lever from being grasped, is becoming popular (Patent Document 1).

The device shown in Patent Document 1 has an indicator 38 drawn as a colored area on the front end surface of a cylindrical locking member 3, and the indicator 38 is exposed from an indicator display section 23 in an opening 21 (FIGS. 3 and 5 of Patent Document 1). By operating the key to rotate the locking member 3, the color of the indicator 38 displayed through the indicator display section 23 changes, allowing the user to visually determine whether the locking member 3 is locked or unlocked.
The flat handle disclosed in Patent Document 1 is particularly advantageous in that the structure for attaching the lock member 3 to the lever 2 is simple.

Patent No. 5964218

On the other hand, in the flat handle shown in Patent Document 1, the indicator 38 is depicted as a colored area on the front end surface of the lock member 3, and this area is subject to the dimensions of the lock member 3.
The present invention aims to provide a door handle, such as a flat handle or an L-shaped handle, equipped with the indicator, in which the indicator can be designed relatively freely without being restricted by the dimensions of the lock member.

The present invention relates to a flat handle having a casing with an opening on its front side, and a lever provided so as to be able to appear and disappear in the opening of the casing, and by locking a locking member provided on the lever, the lever can be kept housed in the casing and cannot be grasped, the lever has an opening on its front side, the locking member is arranged on the rear side of the lever, and at least a part of the front side of the locking member is exposed from the opening to the front side of the lever, the locking member has a key insertion hole on part of the front side, and the locking and unlocking can be performed by inserting a key into the key insertion hole and rotating the locking member, the lever has an indicator and an indicator display part, the indicator is formed separately from the lever and the locking member, and is arranged on the rear side of the lever radially outward of the rotation of the locking member so as to be displaceable in the circumferential direction of the locking member, and the indicator display part is a sub-opening provided in the lever separately from the opening, or is an indicator extending from the opening to the radially outward of the opening The indicator display portion exposes at least a portion of the indicator to the front side of the lever, and the area of the indicator exposed from the indicator display portion changes with the displacement to indicate the locked and unlocked states. With respect to the rotation of the locking member, the locking direction is the forward rotation direction and the unlocking direction is the reverse direction, and the locking member has a first abutment portion facing the forward rotation direction and a second abutment portion facing the reverse rotation direction, and the indicator is pressed against the first abutment portion by the forward rotation of the locking member. The flat handle is provided with a first abutment portion that is pressed by the first abutment portion to rotate the indicator forward when the lock member is rotated in the reverse direction, and a second abutment portion that is pressed by the second abutment portion to rotate the indicator in the reverse direction when the lock member is rotated in the reverse direction, wherein the distance between the first abutment portion and the second abutment portion in the circumferential direction of the lock member is smaller than the distance between the first abutment portion and the second abutment portion, and the angular range of the central angle over which the indicator rotates, i.e., makes the displacement, is smaller in the circumferential direction of the lock member than the angular range of the central angle over which the lock member rotates.
In addition, in the present invention, the locking element is approximately cylindrical, has the key insertion hole at one end of the cylinder, and has a lock case on the rear side of the lever that houses the locking element, and the lock case houses a latch piece that appears and disappears from the locking case when the locking element rotates and catches on the casing to lock it, and the indicator has an indicator portion exposed from the indicator display portion and a follower portion that is approximately arc-shaped in front view and is formed integrally with the indicator portion at the rear of the indicator portion and follows the outer surface of the locking element, and in the circumferential direction of the locking element, one end of the follower portion is the first abutment portion and the other end of the follower portion is the second abutment portion, and the follower portion displaces the indicator portion in response to the rotation of the locking element, thereby providing a flat handle.
Furthermore, in the present invention, the indicator portion is color-coded in two different colors in two different circumferential areas of the lock member, and a flat handle is provided that indicates whether the handle is locked or unlocked depending on the color seen through the indicator display portion.
Furthermore, the present invention provides an L-shaped handle having, with the front side of a door being the front side and the back side of the door being the rear side, a base fixed to the door, a shaft protruding from the base to the front side and the back side of the base, a rod-shaped lever connected to or formed integrally with the shaft and rotatable relative to the base, and a locking member preventing the lever from rotating relative to the base, wherein an opening is provided on the front side of the lever, and the locking member is rotatably housed in at least one of the lever and the shaft, and at least a part of the front side of the locking member is exposed from the opening to the front side of the lever, and the locking member has a key insertion hole on part of the front side, and the locking and unlocking can be performed by inserting a key into the key insertion hole and rotating the locking member, and the lever has an indicator, which is formed separately from the lever, the shaft and the locking member and is arranged radially outward of the rotation of the locking member. and a locking indicator that can be displaced in the circumferential direction of the locking member by changing its orientation with the displacement, thereby indicating the locked or unlocked state; the locking direction with respect to the rotation of the locking member is the forward rotation direction and the unlocking direction is the reverse rotation direction, and the locking member has a first abutment portion facing the forward rotation direction and a second abutment portion facing the reverse rotation direction; the indicator has a first abutted portion that is pressed by the first abutment portion during forward rotation of the locking member to rotate the indicator forward, and a second abutted portion that is pressed by the second abutment portion during reverse rotation of the locking member to rotate the indicator reverse; the distance between the first abutment portion and the second abutment portion in the circumferential direction of the locking member is smaller than the distance between the first abutment portion and the second abutment portion; and the angular range of the central angle over which the indicator rotates, i.e., the displacement, in the circumferential direction of the locking member is smaller than the angular range of the central angle over which the locking member rotates.
Furthermore, in the present invention, the lever is provided with a cover that can be opened and closed, covering the front surface of the locking member and the indicator, the lever is provided with an indicator display part, and the indicator display part is an opening provided in the cover or a notch provided on the periphery of the cover, the indicator display part exposes at least a part of the indicator to the front surface side of the lever, and the area of the indicator exposed from the indicator display part changes with the displacement, thereby indicating the locked and unlocked states, the locking member is substantially cylindrical, and has the key insertion hole at one end of the cylinder, and has a lock accommodating part that extends from the lever to the inside of the shaft, leads to the opening, and accommodates the locking member, The peripheral surface has a recess that retreats radially outward from the lock accommodating portion as a latch receiving portion, the shaft portion has an opening that penetrates from the lock accommodating portion to the outer peripheral surface of the shaft portion, the lock accommodating portion accommodates a latch piece that appears and disappears from the opening when the lock member is rotated and engages with the latch receiving portion to perform the locking, the indicator has an indicator portion exposed from the indicator display portion and a follower portion that is integral with the indicator portion and has a generally arc-shaped shape in a front view that follows the outer peripheral surface of the lock member, one end of the follower portion being the first abutment portion in the circumferential direction of the lock member and the other end of the follower portion being the second abutment portion, and an L-shaped handle has been provided in which the follower portion follows the rotation of the lock member to displace the indicator portion.

In the door handle such as the flat handle of the present invention, the indicator is separate from the locking member, so that the indicator can be designed without being restricted by the size of the locking member.
Therefore, the indicator can be made relatively large and easily visible.
In addition, there is no longer any need to restrict the placement of the indicator display unit to the vicinity of the lock member.
In particular, by making the rotation range of the indicator smaller than the rotation range of the locking member, it is possible to provide an indicator that is not restricted by the size of the locking member, without enlarging the lever.
Furthermore, the indicator can be provided with a relatively simple structure while suppressing an increase in the number of parts.
In particular, in the door handles including the flat handles and L-shaped handles of the present invention, the rotational force is transmitted directly from the locking member to the indicator, without any other components passing between the locking member, which locks and unlocks by rotation, and the indicator, and the indicator also rotates concentrically with the locking member, thereby providing a handle with an extremely simple structure that minimizes the number of parts and achieves the above-mentioned effects.

1A is a front view showing the use state of the flat handle according to the first embodiment of the present invention with the lever closed, FIG. 1B is a side view of FIG. 1A, and FIG. 1C is a rear view of the fixing member shown in FIG. 1B. (A) is a front view of the flat handle in the unlocked state with the lever closed, (B) is a schematic cross-sectional view of (A) taken along x1-x1, and (C) is a schematic cross-sectional view of (A) taken along x2-x2. (A) is a front view of the flat handle in a locked state with the lever closed, (B) is a schematic cross-sectional view taken along x3-x3 of (A), and (C) is a schematic cross-sectional view taken along x4-x4 of (A). (A) is an enlarged front view of the indicator in Figure 1(A), (B) is a left side view of (A), (C) is a right side view of (A), (D) is a plan view of (A), (E) is a bottom view of (A), (F) is a rear view of (A), and (G) is an x5-x5 cross-sectional view of (F). (A) is an enlarged front view of the lever in Figure 2(A) with a partial cutout, (B) is a bottom view of the locking member with the tangiciator shown in (A) attached, (C) is a right side view of the locking member shown in (B), and (D) is a cross-sectional view taken along the x6-x6 line of (B). (A) is an enlarged, partially cutaway front view of the lock member during the operation of locking from the unlocked state shown in Figure 4(A), (B) is a bottom view of the lock member with the indicator shown in (A) attached to it, (C) is a right side view of the lock member shown in (B), and (D) is a x7-x7 cross-sectional view of (B). (A) is an enlarged front view of the lever in Figure 2(A) with a partial cutaway, (B) is a bottom view of the locking member with the indicator shown in (A) attached, (C) is a right side view of the locking member shown in (B), and (D) is an x8-x8 cross-sectional view of (B). (A) is an enlarged, partially cutaway front view of the locking member during the unlocking operation from the locked state shown in Figure 6 (A), (B) is a bottom view of the locking member with the indicator shown in (A) attached to it, (C) is a right side view of the locking member shown in (B), (D) is an x9-x9 cross-sectional view of (B), and (E) is an explanatory diagram showing the movable range (movable angle) of the indicator. 1A is a schematic cross-sectional view showing the state in which the lever of the flat handle in the unlocked state shown in FIG. 1B is raised, and FIG. 1B is a schematic cross-sectional view showing the state in which the lever of the flat handle in the unlocked state shown in FIG. 1C is raised. (A) is an enlarged, exploded cross-sectional view of the lever of Figure 2(B) with a partial cutaway showing the process of attaching the indicator to the lever before attaching the locking member and lock case to the lever during the manufacture of the flat handle; (B) is an enlarged, exploded cross-sectional view of the essential part with a partial cutaway showing the process of attaching the locking case to the lever of (A); and (C) is an enlarged, exploded cross-sectional view of the essential part with a partial cutaway showing the process of attaching the locking member to the lever of (B) with the lock case attached. (A) is an enlarged cross-sectional view of a part cut away showing the state in which the lock member has been attached to the lever of Figure 10(C), (B) is a cross-sectional view taken along x10-x10 of Figure 10(A), (C) is a schematic cross-sectional view taken along x11-x11 of Figure 10(B) showing the arrangement of the indicators of Figure 5(A) from the back side of the lever, and (D) is a schematic cross-sectional view taken along x11-x11 of Figure 10(B) showing the arrangement of the indicators of Figure 7(A) from the back side of the lever. 1A is an enlarged rear view of the main part with a part cut away before the lock member and the lock case are attached to the lever during manufacturing of the flat handle, and FIG. 1B is a perspective view showing another embodiment of the flat handle h. 10A is a front view showing a state in which an L-shaped handle according to a second embodiment of the present invention is used, and FIG. 10B is a side view of FIG. (A) is a front view of the L-shaped handle showing the state before use with the latch removed, and (B) is a schematic cross-sectional view of (A) taken along the line x10-x10. 15A is a front view of the L-shaped handle shown in FIG. 14 with the cover open when unlocking, and FIG. 15B is a schematic cross-sectional view of FIG. 14A taken along the line x11-x11. (A) is a front view of the L-shaped handle shown in Figure 15 (A) without the cover, (B) is a schematic cross-sectional view of (A) taken along x12-x12, (C) is a schematic cross-sectional view of the L-shaped handle at the x13-x13 position shown in (B), and (D) is a schematic cross-sectional view of the L-shaped handle at the x14-x14 position shown in (B). 15A is a front view of the L-shaped handle shown in FIG. 14 with the cover open when locked, and FIG. 15B is a front view of the L-shaped handle of FIG. 14 with the cover removed. (A) is a schematic cross-sectional view of x15-x15 in Figure 17(B), (B) is a schematic cross-sectional view of the L-shaped handle at the x16-x16 position shown in (A), (C) is a schematic cross-sectional view of the L-shaped handle at the x17-x17 position shown in (A), and (D) is an explanatory diagram showing the movable range (movable angle) of the indicator shown in Figures 16(A) and 17(B). (A) is a front view of the main parts showing the orientation of the locking member and indicator when the L-shaped handle of Figure 16 (A) is unlocked, (B) is a front view of the main parts of the L-shaped handle when the locking member has started to rotate from the state of (A) in the direction of locking, (C) is a front view of the main parts showing the orientation of the locking member and indicator when the L-shaped handle of Figure 17 (B) is unlocked, (D) is a bottom view of the locking member and indicator of (A), (E) is a bottom view of the locking member and indicator of (B), (F) is a bottom view of the locking member and indicator of (C), (G) is a schematic cross-sectional view of x18-x18 of (D), (H) is a schematic cross-sectional view of x19-x19 of (E), and (I) is a schematic cross-sectional view of x20-x20 of (F).

Embodiments of the present invention will be described below with reference to the drawings. For ease of explanation, in each drawing, U represents the top, S represents the bottom, F represents the front, and B represents the rear.

(overview)
A door handle according to a preferred embodiment of the present invention is provided on a door t2 of a switchboard box and is used as a handle for the door, and also serves to lock the door.
(First embodiment)
Therefore, the flat handle h according to this embodiment is provided on the door t2 of the switchboard box and used as a handle for the door. The flat handle h also locks the door (FIGS. 1A and 1B).

That is, the flat handle h is inserted into a mounting hole t4 provided on a handle mounting surface t3 of the door t2 and fixed to the door t2 ( FIG. 1(B) ). When the door t2 is closed, the flat handle h causes a latch j to protrude from the leading edge of the door t2, and the latch j is engaged with a latch receiving portion t6 provided on the main body t1 of the distribution box t ( FIG. 1(A) ). The flat handle h includes a casing 1 inserted into the mounting hole t4 and a lever 2 that rises and falls relative to the casing 1, which has an open front ( FIGS. 1(A) and 1(B) and 9(A) and 9(B) ). When the lever 2 is opened from the casing 1, the lever 2 can be rotated relative to the casing 1, i.e., the door t2 ( FIGS. 9(A) and 9(B) ).
The latch j rotates in response to the above-described rotation of the lever 2. This rotation of the lever 2 disengages the latch j from the latch receiving portion t6, allowing the door t2 to be opened (FIGS. 1A and 1B).

The lever 2 is equipped with a locking member 3 for locking, and when locked, the lever 2 remains housed in the casing 1 so that it cannot be grasped, and when unlocked, the lever 2 is raised and rotated, disengaging the latch j from the latch receiving portion t6 and allowing the door t2 to be opened. The locking member 3 is housed in a lock case 4 and attached to the lever 2. The lever 2 houses an indicator 7 that shows the locked/unlocked state of the locking member 3, and the state of the indicator 7 is displayed on an indicator display portion 23 provided on the lever 2. The lever 2 is equipped with an indicator housing portion that houses the indicator 7.
The configuration of each part will be described in detail below.

(Casing 1)
The casing 1 includes a casing body 10, a fixing member 11, and a packing 12 (FIG. 1(B)).
The fixing member 11 and the packing 12 are each formed separately from the casing body 10 (FIGS. 1B and 1C).
The casing body 10 is formed with a housing portion 13 and a flange 14. The housing portion 13 is a recess that retreats rearward from the front of the casing body 10 and houses the lever 2. The housing portion 13 is a protrusion on the rear side of the casing body 10. The lever 2 appears and disappears from an opening 13e of the housing portion 13 that opens to the front of the casing body 10 (FIGS. 9A and 9B).

In this example, the storage section 13 extends vertically and the lever 2 is stored vertically with its tip pointing downward. However, the storage section 13 may also extend horizontally and store the lever 2 horizontally (not shown).
The accommodation portion 13 has a first recessed portion 13a that accommodates the tip side of the lever 2, and a second recessed portion 13b that is formed continuously with the first recessed portion and accommodates the base side of the lever 2 (FIGS. 1(B), 2(B)(C), 3(B)(C), and 9).

The interior of the first recessed portion 13a is set further rearward than the interior of the second recessed portion 13b. The first recessed portion 13a accommodates the lock case 4 attached to the lever 2 when the lever 2 is closed.
A latch receiving portion 17 is provided on the inner surface of the first recessed portion 13a (FIGS. 2(B) and 2(C), 3(B) and 3(C), and 9).
In this example, the latch receiving portion 17 is a recess provided on the upper surface of the inner surface of the first recessed portion 13a. However, the latch receiving portion 17 can also be formed as a protrusion protruding from the upper surface as long as it can catch the latch piece 44 of the locking member 3. The latch receiving portion 17 can also be a recess provided on the lower surface of the first recessed portion 13a, or the latch receiving portion 17 can also be formed as a protrusion protruding from the lower surface (not shown).

In the first recessed portion 13a, a space (extended space 80) for accommodating the push button 8 is extended toward the tip (lower) side of the lever 2 from the space accommodating the lock case 4, and the push button 8 is provided in this extended space 80. The extended space 80 is also open on the front side of the lever 2, exposing the push button 8 to the outside of the lever 2. The part of the push button 8 exposed to the outside of the lever 2 is the pressing surface that is pressed with a fingertip.
More specifically, the push button 8 includes a pressing portion 82 with the pressing surface facing forward, and a pivot portion 81 that protrudes rearward from the back surface of the pressing portion 82 and is pivotally secured to the casing main body 10 within the extension space 80. By pressing the pressing surface of the push button 8 (pressing portion 82), the push button 8 can be rotated around the pivot portion 81. This rotation causes the upper side of the pressing portion 82 of the push button 8 to open forward.
The push button 8 is constantly biased in a direction against the pressure by a biasing means (not shown) such as a spring, and when the pressure is released, the pressing portion 82 returns to its original orientation.

A cylindrical portion 13c is formed on the second recessed portion 13b on the side opposite to the first recessed portion 13a, i.e., on the upper end side of the second recessed portion 13b in this example (FIGS. 1(B), 2(B), 2(C), 3(B), 3(C), and 9).
A through-hole 13d is provided inside the cylindrical portion 13c, passing through the casing body 10 in the front-rear direction (FIGS. 2(B) and 2(C), 3(B) and 3(C), and 9).

The flange 14 is a brim provided on the periphery of the open portion 13e of the storage portion 13 and abuts against the mounting surface t3 of the door t2 (FIG. 1(B) and FIGS. 9(A) and 9(B)).
The rear side of the storage portion 13 protruding from the rear surface of the casing body 10 is inserted into the mounting hole t4 of the door t2 (FIG. 1B).

The packing 12 is formed in an annular shape and is attached to the rear surface of the flange 14 before the casing 1 is attached to the attachment hole t4 of the door t2. In this example, the packing 12 is formed in a substantially oval shape in a front view to match the shape of the rear surface of the flange 14. The packing 12 is made of rubber, urethane, plastic, or other elastic and waterproof material.
The annular packing 12 is disposed on the rear surface of the casing body 10 so as to surround the accommodating portion 13 .
By providing the packing 12 on the rear surface of the flange 11, the sealing performance between the flange 14 and the mounting surface t3 of the door t2 can be improved.

With the storage section 13 inserted into the mounting hole t4, the fixing member 11 is placed on the back side of the storage section 13 and secured with a well-known fastening member 16. The flange 14 and fixing member 11 sandwich the area of the door t2 where the mounting surface t3 is located from the front and back, thereby securing the flat handle h to the door t2.

The fastening member 16 can be formed using well-known fastening means such as screws, bolts, or pins. Specifically, the fastening member 11 includes two retaining portions 11a, one extending vertically and the other aligned laterally, and a connecting portion 11b located between the retaining portions 11a and connecting the retaining portions 11a (Figs. 1(B) and 1(C)). The connecting portion 11b includes a fastening member insertion portion 11c through which the fastening member 16 passes. The fastening member insertion portion 11c can be formed as a hole or notch that penetrates the connecting portion 11b from front to back. The connecting portion 11b is fixed to the back surface of the storage section 13 by the fastening member 16. When fixed, the retaining portions 11a are positioned behind the flange 14, sandwiching the portion of the door t2 where the mounting surface t3 is located (Fig. 1(B)).

(Lever 2)
The lever 2 is shaped as a handle for opening and closing the door t2 (Figs. 1(A) and (B), 2, 3 and 9). The lever 2 is attached to the casing 1 so that it can be raised and lowered. When the lever 2 is raised, i.e., when it is opened from the casing 1 (Fig. 9), it becomes rotatable and can rotate the latch j.
The lever 2 is formed with a hinge portion 20, a hook portion 5, an opening 22, and a lock mounting portion 24 (FIGS. 2(B) and 2(C) and 10).

The hinge portion 20 is provided on the rear surface of the base of the lever 2 (Figures 2(B)(C), 3(B)(C), and 9). The lever 2 can be raised and lowered relative to the casing 1 around this hinge portion 20. The hinge portion 20 is formed by attaching a base body 20a, which is formed separately from the lever 2, to the rear surface of the base of the lever 2 by a horizontal shaft 20b extending laterally to the left and right. A well-known pin can be used for the horizontal shaft 20b.

In this example, the base body 20a is a cylinder whose height is smaller than the diameter of a disk or the like, and is housed in the tubular portion 13c of the housing portion 13. The center line (imaginary line) of the base body 20a substantially coincides with the center line (imaginary line) of the tubular portion 13c, and both extend in the front-to-rear direction. A shaft g extending in the front-to-rear direction is inserted into the through-hole 13d (Figures 2(B)(C), 3(B)(C), and 9). The front end of the shaft g is connected to the base body 20a and is integral with the base body 20a. The shaft g is attached to the base body 20a so as to be concentric with the base body 20a. The latch j is fixed to the base end of the shaft g (Figure 1(B)).

By raising and rotating the lever 2, the base body within the cylindrical portion 13c rotates together with the shaft g, causing the latch j to rotate (FIGS. 1A and 9).
Although not shown, the lever 2 is constantly biased in the upright direction by a biasing body such as a spring from the casing 1, i.e., from the housing portion 13 of the casing body 10. Therefore, when the lever 2 is to be lowered into the casing 1, it is necessary to push the lever 2 into the housing portion 13 of the casing body 10 against the biasing force of the biasing body.

The hook portion 5 is a protrusion that protrudes downward from the tip of the lever 2. When the lever 2 is in a state where it is laid down on the casing 1, it catches on the upper end of the pressing portion 82 of the push button 8, keeping the lever 2 in the laid down position. When the push button 8 is pressed and the upper end of the pressing portion 82 opens, the lever 2 rises from the storage portion 13 of the casing main body 10 due to the bias of the biasing body (Figure 9).

The opening 22 is a circular through-hole in a front view that penetrates the lever 2 from front to back, and is formed closer to the tip of the lever 2 than the hinge portion 20 ( FIGS. 2 , 3 , 9 to 11 ). The opening 22 is used to insert a key into the lock member 3 provided on the lever 2 to lock and unlock the lever. The opening 22 constitutes a key operating portion that operates the key (hereinafter, the opening 22 will be referred to as the key operating portion 22 as necessary). That is, the key can be inserted from the key operating portion 22 into the key insertion hole 33 of the lock member 3 to rotate the lock member 3.
The key operation portion 22 is not limited to the circular shape as long as it allows the rotational operation of the shaped member 3 with a key.

An indicator display portion 23 is provided in the lever 2 near the opening 22. In this example, the indicator display portion 23 is also a through-hole that penetrates the lever 2 from front to rear.
In this example, the indicator display section 23 is a through-hole that is provided above the key operation section 22 (opening 22) and passes through the lever 2 from front to back. A portion of the indicator 7 (the front surface of an indicator section 71, described later, i.e., a display area of the indicator section 71, described later) housed in the lever 2 can be exposed to the outside of the lever through the indicator display section 23. In other words, the indicator display section 23 is a small window that exposes a portion of the indicator 7 housed in the indicator housing section to the outside of the lever 2.

As the lock member 3 rotates, the indicator 7 is pushed by the lock member 3 and displaced within the indicator housing, changing the display area (exposed area) of the indicator 7 visible through the indicator display unit 23. This flat handle h can indicate the locked/unlocked state by the display area of the indicator 7 visible through the indicator display unit 23. Details of the lock member 3, including the key insertion hole 33 and indicator 7, will be described later.

The lock mounting portion 24 is formed on the rear surface of the lever 2, i.e., the surface of the lever 2 facing the storage portion 13 of the casing 1, closer to the tip of the lever 2 than the hinge portion 20 (Figure 10), and the lock mounting portion 24 is located behind the opening 22 (key operating portion 22).
The lock mounting portion 24 includes a case mounting portion 25 and a fitting portion 26 (FIGS. 10 and 12A).

The case mounting portion 25 is a portion where the lock case 4 is fixed.
The case attachment portion 25 is a portion on the rear surface of the lever 2 that is recessed (recessed) toward the front of the lever 2 from the left and right portions of the case attachment portion 25 (lever side edges 29 a ).
As will be described in detail later, the lock case 4 is fixed to the case mounting portion 25 with well-known fasteners 28 such as screws, bolts, pins, adhesives, welding, etc. In this embodiment, the lock case 4 is attached to the case mounting portion 25 with screws as fasteners 28, and the case mounting portion 25 is provided with threaded holes as fastening holes 27.

More specifically, a case mounting portion 25 is provided above the opening 22 on the rear surface of the lever 2. A fitting portion 26 is provided below the opening 22 on the rear surface of the lever 2, and a fitting portion 43b formed on the lower front surface of the lock case 4 is fitted into the fitting portion 26.
In this example, the fitting portion 26 is a dovetail groove having an inverted V-shaped cross section (in plan view), and the fitted portion 43b is a "tenon" that fits into the dovetail groove.
Conversely to the above example, the fitted portion 43b may be a dovetail groove and the fitting portion 26 may be the "tenon".

On the rear surface of the lever 2 , a recessed portion 29 is provided between the case mounting portion 25 and the opening 22 , which is recessed further forward of the lever 2 than the case mounting portion 25 .
The indicator accommodating portion is a space surrounded by the inner surface of the lever side edge 29a that protrudes rearward from the retracted portion 29 and the case mounting portion 25, the step (step surface 29b) between the retracted portion 29 and the case mounting portion 25, the outer peripheral surface of the rotor 30 of the lock member 3 that is attached through the opening 22, and the mounting portion 43 (of the lock case 4, which will be described later) (FIGS. 10(A), 11(B) to (D), and 12(A)). The indicator 7 is accommodated in the indicator accommodating portion.
The lever 2 is provided with the indicator display portion 23 penetrating into the retracted portion 29 toward the front side of the lever 2. The periphery of the indicator display portion 23 in the retracted portion 29 forms a mask portion that covers the indicator 7 when the lever 2 is viewed from the front.

The lock member 3 in this example is a tumbler lock, and includes a cylindrical rotor 30 (FIGS. 10C and 11A) that houses a plurality of driver pieces 34. The central axis (imaginary line) of the cylindrical rotor 30 extends in the front-to-rear direction (the central axis passes through the center O in FIG. 8E and FIGS. 11B to 11D).
The rotor 30 has the aforementioned key insertion hole 33 on the front surface 31 and a protrusion 36 on the rear surface 32 (FIGS. 1A, 2, 3, 5 to 9, 10C, and 11A).
The plurality of driver pieces 34 are housed in the rotor 30 so as to be able to freely protrude from and retract into the outer periphery of the rotor 30. The plurality of driver pieces 34 are arranged in the axial direction of the rotor 30. Each of the driver pieces 34 is biased by a resilient biasing member (not shown) and protrudes from the outer periphery of the rotor 30. A spring can be used as the biasing member.

Furthermore, the rotor 30 houses a retaining piece 35 that can freely protrude and retract from the outer surface of the rotor 30 (Figures 10(C) and 11(A)). The retaining piece 35 is biased by a resilient biasing member (not shown) and protrudes from the outer surface of the rotor 31. In this example, the retaining piece 35 is positioned behind the row of driver pieces 34. A spring can also be used as the biasing member for the retaining piece 35.

The front side 30a of the rotor 30, which includes the front surface 31, has a larger diameter than the rear side 30b of the rotor 30, from which the driver piece 34 appears (FIG. 10C).
A rotation transmission part 37 that protrudes higher than other parts of the rear side 30b is provided on the outer periphery of the front end of the rear side 30b. The rotation transmission part 37 is an arc-shaped protrusion that is provided along the circumferential direction of the rotor 30.
The width of the protrusion of the rotation transmitting portion 37 does not exceed the outer periphery of the front side 30a of the rotor 30 in the radially inward and outward directions.

The rotation transmission unit 37 is formed over a range of central angles of approximately 180 degrees in the circumferential (rotational) direction of the rotor 30, corresponding to the rotation angle (approximately 180 degrees) of the lock member 3 with the key inserted. However, when a lock member 3 with a rotation angle other than 180 degrees is used, the rotation transmission unit 37 may be formed over a range of central angles other than 180 degrees that corresponds to the rotation angle of the lock member 3.
In this example, with respect to the rotation direction (circumferential direction) of the rotor 30, the locking direction is the forward direction and the unlocking direction is the reverse direction, and the end of the rotation transmission part 37 facing the forward direction constitutes the first abutment part 37a, and the end of the rotation transmission part 37 facing the reverse direction constitutes the second abutment part 37b (Figures 5(B) to (D), Figures 6(B) to (D), Figures 7(B) to (D), and Figures 8(B) to (D)).

The rotor 30 of the illustrated lock member 3 (tumbler lock) has a cross hole 37e that intersects with the key insertion hole 33, and one opening of the cross hole 37e interrupts the rotation transmission part 37 in the circumferential direction (rotational direction) of the rotor 30. Therefore, strictly speaking, the rotation transmission part 37 is composed of a leading part 37c that leads during forward rotation and a trailing part 37d that follows during forward rotation, with the trailing part sandwiched between them by the interrupted part. In terms of the rotational direction, the first abutment part 37a is the end of the leading part 37c facing the forward rotation direction, and the second abutment part 37b is the end of the trailing part 37d facing the reverse rotation direction.

However, the rotation transmission unit 37 can be considered continuous, ignoring the interrupted sections (i.e., there are no interrupted sections). This example uses a general-purpose tumbler lock as the lock member 3, and in this embodiment, the flat handle h does not use the cross hole 37e, so it can be implemented without the cross hole 37e. Even if the cross hole 37e is not provided, it can still have an interrupted section, and the rotation transmission unit 37 can be configured with two discontinuous sections (sections): a leading section 37c and a trailing section 37d. Furthermore, the rotation transmission unit 37 can be configured with three or more interrupted sections around the rotor 30, or three or more protrusions protruding radially outward from the rotor 30, with the first abutment section 37a being the section or protrusion facing the forward rotation direction during forward rotation, and the rearmost section or protrusion facing the reverse rotation direction being the second abutment section 37b.

With regard to each of the driver pieces 34 of the lock member 3, by inserting a key (not shown) into the rotor 30 through the key insertion hole 33, each driver piece 34 sinks into the rotor 30, making it possible to rotate the key.
The protrusion 36 is provided on the rear surface 32 of the rotor 30 at a position eccentric from the central axis of the rotor 30, and rotates as the lock member 3 (rotor 30) rotates.

The lock case 4 also has a latch accommodating portion 41, a lock accommodating portion 42 provided in front of the latch accommodating portion 41, an attachment portion 43, and the latch piece 44 formed separately from the lock case 4 and accommodated in the latch accommodating portion 41 (Figures 10 (B) (C) and 11 (A)).
The interior of the latch accommodating portion 41 is sized to allow the latch piece 44 to slide smoothly up and down. The latch accommodating portion 41 has an opening 41a on its side surface through which the latch piece 44 appears and disappears. In this example, the opening 41a is provided on the upper side of the latch accommodating portion 41, and allows the latch piece 44 to appear and disappear upward.

The rear side 30b of the rotor 30 of the lock member 3 can be accommodated in the lock accommodating portion 42. The inner diameter of the lock accommodating portion 42 is approximately equal to or slightly larger than the outer diameter of the rear side 30b of the rotor 30, allowing the rotor 30 to rotate smoothly relative to the lock case 4 when the driver piece 34 is retracted.

The lock accommodating portion 42 has a first driver receiving portion 42a, a second driver receiving portion 42b, and a retaining latch portion 42c on its inner circumferential surface.
The first driver receiving portion 42a and the second driver receiving portion 42b are grooves that are provided on the inner circumferential surface of the lock accommodating portion 42 and extend along the axial direction of the cylindrical lock accommodating portion 42. In this example, on the inner circumferential surface of the lock accommodating portion 42, the first driver receiving portion 42a is provided on the upper side of the lock case 4, and the second driver receiving portion 42b is provided on the opposite lower side.

The retaining latch portion 42c is located behind the first and second driver receiving portions 42a, 42b of the lock case 4.
The retaining latch 42c is a groove extending in the circumferential direction of the lock accommodating portion 42. Although not shown, a small hole leading to the retaining latch 42c of the lock accommodating portion 42 is provided in the lock case 4, and when removing the lock member 3 from the lock case 4, a pin is inserted through the small hole to cause the retaining piece 35 to sink from the retaining latch 42c.

The mounting portion 43 is a flat plate-like portion that protrudes radially outward from the front end of the lock accommodating portion 42. The mounting portion 43 is provided with a hole 43a through which the fastener 28 can be inserted.
A protruding receiving portion 44a is provided on the latch piece 44. The protruding receiving portion 44a is a notched portion provided on the side of the latch piece 44.

The lock case 4 houses the lock member 3. During assembly, the indicator 7 is first placed in the lever 2, and then the lock case 4 is attached to the lever 2. After that, the rear side 30b of the lock member 3 is inserted into the lever 2 through the opening 22 from the front side of the lever 2 (Figures 10 and 11(A)).

To more specifically describe how to attach the lock case 4 to the lever 2, the lock case 4 is brought closer to the lever 2 from behind the lever 2 while sliding the case 2 downward, thereby fitting the mating portion 43b into the mating portion 26. After fitting the mating portion 43b into the mating portion 26, the fastener 28 is passed through the hole 43a of the mounting portion 43 provided on the lock case 4, and the fastener 28 is fixed to the fastening hole 27. In this example, the fastener 28, which is a screw, can be fixed by screwing the fastener 28 into the fastening hole 27, which is a screw hole.

Although not shown in the drawings, when storing the lock member 3 (rotor 30) in the lock case 4, the key is inserted into the key insertion hole 33 of the rotor 30 and each driver piece 34 is recessed within the rotor 30 before the storage. The retaining pieces 35 are then pressed with the fingers to retract them and pressed against the inner peripheral surface of the lock storage section 42, and the rotor 30 is stored in the lock storage section 42 with the retaining pieces 35 remaining recessed.
When the rotor 30 is accommodated as described above, the driver piece 34 is aligned with the second driver accommodating portion 42b. The retaining piece 35 protrudes from the rotor 30 at the retaining locking portion 42c to prevent the rotor 30 from falling off. Furthermore, when the key is removed from the rotor 30, the driver piece 34 protrudes into the second driver accommodating portion 42b. When the driver piece 34 protrudes into the second driver accommodating portion 42b, the rotor 30 cannot rotate.

By accommodating the rotor 30 as described above, the protrusion 36 of the rotor 30 enters the protrusion receiving portion 44a of the latch piece 44 within the latch accommodating portion 41. At this time, that is, when the driver piece 34 protrudes into the second driver accommodating portion 42b, the protrusion 36 is positioned downward within the latch accommodating portion 41, causing the latch piece 44 to be submerged within the latch accommodating portion 41.

In this example, if the key is inserted and the lock member 3 is attached to the lever 2, and then the key is removed without turning, the driver piece 34 protrudes into the second driver receiving portion 42b. When the driver piece 34 is in the second driver receiving portion 42b, the latch piece 44 is recessed into the rotor 30 (latch accommodating portion 41), and when the push button 8 is pressed, the lever 2 rises from the casing 1 (Figure 9).

To lock the lock member 3 after attaching the lever 2 to the casing 1, the key is inserted to retract the driver piece 34 into the rotor 30, and the key is then rotated to rotate the lock member 3. This rotation of the lock member 3 causes the driver piece 34 to reach the first driver receiving portion 42a, and when the key is removed, the driver piece 34 protrudes into the first driver receiving portion 42a. When the driver piece 34 is in the first driver receiving portion 42a, the protrusion 36 of the rotor 30 is positioned upward, causing the latch piece 44 to protrude (upward) from the opening 41a of the lock case 4, and the latch piece 44 engages with the latch receiving portion 17, thereby locking the lock member 3 (FIGS. 3B and 3C).
To unlock, simply insert the key into the key insertion hole 33 again and rotate it in the opposite direction (reverse rotation) to move the protrusion 36 downward and cause the latch piece 44 to sink into the lock case 4 (Figures 2(B)(C)).

The indicator 7 is a component formed separately from the lever 2 and the locking member 3, and as described above, the indicator 7 is housed in the indicator housing portion of the lever 2 (Figures 4 to 8, Figures 11(B) and (C)).
The indicator 7 comprises an indicator section 71, the front of which is partially exposed from the indicator display section 23, and a follower section 72, which is formed integrally with the indicator section 71 at the rear of the indicator section 71 and has a generally arc-shaped shape in front view, and which follows the outer peripheral surface of the lock member 3 (Figures 4, 5(B) to (D), 6(B) to (D), 7(B) to (D), 8(B) to (D), and 11(C) to (D)).

The indicator portion 71 is a thin plate-like body having a small thickness in both the front and rear directions. When viewed from the front, the upper and lower edges of the indicator portion 71 each have an upwardly convex arc shape. The lower edge of the indicator portion 71 is aligned with the outer peripheral surface of the front side 30a of the rotor 30 (FIG. 11).
The front of the indicator section 71 is a display area 70 that displays the locked/unlocked state (FIGS. 4 to 8).
The display area 70 is color-coded according to the rotation direction (circumferential direction) of the rotor 30. Specifically, in the drawing, the area with grid lines (locked display area) and the area with spots (unlocked display area) are colored differently ( FIG. 4(A) ). The locked area with grid lines indicates the locked state of the lock member 3, and the unlocked area with spots indicates the unlocked state of the lock member 3.
In this example, the locked area with the grid lines is colored green, and the unlocked area with the spots is colored red within the display area 70. However, this color scheme is merely an example, and other color schemes may be used, or each area may be distinguished by letters, symbols, or pictures rather than by color, or each area may be distinguished by colored and uncolored areas.

In this example, the follower part 72 is connected to the indicator part 71 via a collar part 73 extending rearward from the lower edge of the indicator part 71, and a neck part 74 extending from one end of the collar part 73 in the circumferential direction of the arc of the lower edge (Figure 4). The front-to-rear width of the follower part 72 is greater than the front-to-rear width of the neck part 74, and the circumferential end part of the follower part 72 connected to the neck part 74 has a shoulder part that protrudes rearward beyond the neck part 74. In the circumferential direction, the end part of the follower part 72 opposite the neck part 74 is the first abutment part 7a, and the shoulder part is the second abutment part 7b.

When viewed from the front of the lever 2, the aforementioned first abutment portion 37a of the rotation transmission portion 37 of the lock member 3 and the first abutted portion 7a of the indicator 7 are located on the same circumference, and when the lock member 3 rotates, the first abutment portion 37a pushes and rotates the first abutted portion 7a.
Furthermore, when viewed from the front of the lever 2, the aforementioned second abutment portion 37b of the rotation transmission portion 37 of the lock member 3 and the above-mentioned second abutted portion 7b of the indicator 7 are also located on the same circumference, and when the lock member 3 rotates in the opposite direction (reverse rotation), the second abutment portion 37b pushes and rotates the second abutted portion 7b.
The circumference on which the first abutment portion 37a and the first abutted portion 7a are arranged and the circumference on which the second abutment portion 37b and the second abutted portion 7b are arranged do not have to have the same diameter or front-to-back position, but since this allows the surrounding configuration of the indicator accommodating portion and the like to be compact, it is preferable that the circumference on which the first abutment portion 37a and the first abutted portion 7a are arranged and the circumference on which the second abutment portion 37b and the second abutted portion 7b are arranged have approximately the same diameter and front-to-back position.

On the other hand, in the circumferential direction of the lock member 3 (rotor 30), the distance between the first abutment portion 7a and the second abutment portion 7b of the indicator 7 (the length of the arc formed by the follower portion 72 on the above circumference) is smaller than the distance between the first abutment portion 37a and the second abutment portion 37b (the length of the arc formed by the rotation transmission portion 37 on the above circumference).
Specifically, the central angle φ of the arc between the first abutment portion 37a and the second abutment portion 37b in the rotation transmission portion 37 is approximately 180 degrees (semicircle), while the central angle θ of the arc between the first abutted portion 7a and the second abutted portion 7b in the follower portion 72 is an acute angle (Figure 8 (E)).

When the protrusion 36 is positioned downward, the latch piece 44 remains within the latch accommodating portion 41, and the latch piece 44 has not entered the latch receiving portion 17, i.e., when the lever 2 is in an unlocked state and can be raised by pressing the push button 8, the indicator 7 (indicator portion 71) exposes the unlocked display area in the display area 70 from the indicator display portion 23 to the outside of the lever 2, indicating that the lever 2 is in an unlocked state (Figures 2 and 5(A)).

When locking, the lock member 3 is rotated (forward) by operating the key (Figure 6), causing the first abutment portion 37a of the rotation transmission portion 37 of the lock member 3 to abut against the first abutment portion 7a of the indicator 7 and press against the first abutment portion 7a, thereby displacing the indicator 7 inside the indicator housing (Figure 7(D)). This displacement of the indicator 7 causes the position of the display area 70 of the indicator unit 71, exposed from the indicator display unit 23, to change from the unlocked display area to the locked display area (Figures 3 and 7(A)).

When unlocking again, the lock member 3 is rotated (reversely) by operating the key (Figure 8), causing the second abutment portion 37b of the rotation transmission portion 37 of the lock member 3 to abut against the second abutment portion 7b of the indicator 7 and press against it (Figure 5(D)), displacing the indicator 7 in the indicator housing portion back to its original position before locking (Figure 5). This displacement of the indicator 7 causes the display area 70 of the indicator unit 71, exposed from the indicator display unit 23, to change position from the locked display area to the unlocked display area (Figures 2 and 5(A)).

As mentioned above, in the circumferential direction of the lock member 3 (rotor 30), the length of the driven portion 72 between the first abutment portion 7a and the second abutment portion 7b is shorter than the length between the first abutment portion 37a and the second abutment portion 37b of the rotation transmission portion 37, and in the circumferential direction of the lock member 3 (rotor 30), the angular range of the central angle over which the indicator 7 rotates (displaces) is smaller than the angular range (of the central angle) over which the lock member 3 rotates when the key is operated.

Therefore, in the above locking and unlocking operations, even if the lock member 3 is rotated (forward) in the locking direction by operating the key from the unlocked state (Figure 5(D)), the first abutment portion 37a does not immediately abut against the first abutted portion 7a of the indicator 7 (Figure 6(D)). In the unlocked state, there is a gap between the first abutment portion 37a and the first abutted portion 7a, and this gap serves as a running section in the circumferential direction of the lock member 3. After passing through the running section, the first abutment portion 37a abuts against the first abutted portion 7a and pushes against the first abutted portion 7a, causing the indicator 7 to rotate with a delay relative to the lock member 3 (Figure 7(D)).

Similarly, even if the lock member 3 is rotated (reversely) in the unlocking direction by operating the key from the locked state, the second abutment portion 37b does not immediately abut against the second abutted portion 7b of the indicator 7 (Figure 8 (D)). In the locked state described above, there is a gap between the second abutment portion 37b and the second abutted portion 7b, and this gap serves as a running section (reverse running section) in the circumferential direction of the lock member 3. After passing through the reverse running section, the second abutment portion 37b abuts against the second abutted portion 7b and pushes against the second abutted portion 7b, causing the indicator 7 to rotate (reversely) after the lock member 3 has rotated, entering the unlocked state (Figure 5 (D)).

As described above, by making the central angle θ between the first abutment portion 7a and the second abutment portion 7b smaller than the central angle φ between the first abutment portion 37a and the second abutment portion 37b, the above-mentioned run-up section and reverse run-up section are secured, and the angular range (of the central angle) for rotating the indicator 7, i.e., the angular range of rotation of the indicator 7, can be made smaller than the angular range (of the central angle) for rotating the lock member 3 in the circumferential direction of the lock member 3, i.e., the angular range of rotation of the lock member 3 (Figure 8 (E)).

By minimizing the displacement range of the indicator 7 as described above, the degree of freedom in designing the indicator 7 and the indicator housing portion has been increased. If the rotation angle range of the indicator 7 were the same as that of the locking member 3, i.e., if the indicator 7 were to rotate integrally with the locking member 3, the width of the lever 2 would need to be increased unless the indicator 7 were made smaller. Furthermore, if the indicator 7 were formed integrally with the locking member 3 (the area depicted on the locking member 3 as in Patent Document 1), the indicator 7 would be constrained by the dimensions of the locking member 3, making it impossible to ensure a large display area. This invention is a breakthrough that solves these problems with a simple configuration.

In this example, the lever 2 is provided with restriction portions 29c, 29d that come into contact with the displacing indicator 7 and restrict the range of possible displacement (FIGS. 11(B) to (D)). In FIGS. 11(C) and (D), the angle γ indicates the range (rotation angle) in which the indicator 7 can actually be displaced. Without the indicator 7, the rotation range (rotation angle) of the rotor 30 would not be restricted by key operation, but by attaching the indicator 7, the rotation range of the rotation transmission portion 37 is indirectly restricted via the indicator 7 (FIGS. 11(B) to (D)).
However, a portion (not shown) that directly restricts the rotation range of the rotor 30 may be provided on the lever 2 .

(Example of change)
In the above embodiment, the indicator display unit 23 is separate from the key operation unit 22, but the indicator display unit 23 may be formed as a part that is set back radially outward from the key operation unit 22.
In the illustrated embodiment, the latch piece 44 extends and retracts toward the tip of the lever 2, i.e., downward, but it may also extend and retract toward the left and right or upward. The position of the latch receiving portion 17 may be changed depending on the direction in which the latch piece 44 extends and retracts.

12(B), an annular member 9 that protrudes forward from the casing 1 is provided in the storage section 13 of the casing main body 10, and an insertion section 90 is formed in the lever 2 to pass the annular member 9 through the lever 2 from front to back, and a padlock or combination lock 100 can be attached to the annular member 9 when the lever 2 is in the down position. In the embodiment shown in FIG. 12(B), matters not specifically mentioned are the same as those in the embodiments shown in FIGS. 1 to 11.
Furthermore, in each of the above embodiments, the flat handle h is provided on the door of the switchboard box, but the flat handle h can also be provided on a door other than the switchboard box.

Second Embodiment
The L-shaped handle L according to this embodiment is also provided on the door t2 of the switchboard box t and used as a handle for the door. The L-shaped handle L also locks the door (FIGS. 13A and 13B).
The components around the L-shaped handle L of the door t2 etc. shown in Figures 13(A) and (B) are the same as the components around the flat handle h shown in Figures 1(A) and (B), so they are given the same symbols and their explanations are omitted, and the explanation will focus on the differences in the handle. Therefore, matters not specifically mentioned are the same as those in the first embodiment.

In the following description, the front side of the door t2 is referred to as the front side, and the back side of the door t2 is referred to as the rear side.
The L-shaped handle L has a base L1 fixed to the door t2, a shaft Lg protruding from the base L1 to the front and back sides of the base L1, a rod-shaped lever L2 connected to or formed integrally with the shaft Lg protruding to the front side and rotatable relative to the base L1, and a locking member L3 that prevents the lever L2 from rotating relative to the base L1 by locking. As will be described in detail later, the locking member L3 rotates relative to the lever L2 by inserting a key (not shown) and rotating the locking member L3 (a rotor L30, which is a main part and will be described later) itself relative to the lever L2, and this rotation performs the above-mentioned locking and unlocking.
A latch j is provided on the shaft Lg, and by rotating the shaft Lg by the above-mentioned pivoting operation of the lever L2, the latch j is released from the latch receiving portion t6, and the door t2 can be opened.
The L-shaped handle L of the second embodiment will be described in detail below.

(Base L1)
The base L1 is a cylindrical body that rotatably accommodates the shaft Lg within its internal space. The base L1 includes a flange-shaped portion L10 between both ends, the outer diameter of which is larger than the other portions of the base L1 in front and behind. The portion of the base L1 rearward of the flange-shaped portion L10, i.e., the rear portion L12, is attached to the mounting hole t4 of the door t2 from the mounting surface t3 side of the door t2, so that the flange-shaped portion L10 abuts against the mounting surface t3 of the door t2 and the rear end of the rear portion L12 protrudes rearward from the opposite surface t5 of the door t2 (FIGS. 13B and 14B). A male thread is provided on the outer surface of the rear portion L12 at the rear end side, and a female-threaded nut member L13 is threaded onto the male thread. The L-shaped handle L is attached to the door t3 by sandwiching the door t3 between the flange-shaped portion L10 and the threaded nut member L13.
By tightening the nut member L13 with a tool such as a wrench, the flange-shaped portion L10 is firmly fixed to the door t2 and will not rotate relative to the door t2 even when the lever L2 is rotated.
A latch receiving portion L17 is formed on the inner peripheral surface of the cylindrical base L1 (FIGS. 16B and 16D). The latch receiving portion L17 is a recessed portion recessed radially outward from the inner peripheral surface of the base L1. In this example, the latch receiving portion L17 is formed in the shape of a groove extending along the axial direction (front-rear direction) of the shaft portion Lg on the inner peripheral surface of the base L1.

(Shaft Lg)
The shaft Lg is housed in the internal space of the cylindrical base L1, with the front end side of the shaft Lg exposed forward from the front end side of the front portion L11 of the base L1, and the rear end side of the shaft Lg exposed rearward from the rear end side of the rear portion L12 of the base L1.
The front end of the shaft Lg is integrally connected to the base end of the lever L2.
The latch j is provided on the rear end side of the shaft portion Lg.

(Lever L2)
The lever L2 is a rod-shaped handle. The base end side of the lever L2 (the upper end side of the lever L2 in the state shown in Figures 13 to 15, 16(A) and 17) is formed integrally with the shaft portion Lg as described above, and when the door t2 is closed and the latch j is housed in the latch receiving portion t6, the lever L2 extends vertically and points its tip downward.
In the unlocked state, the lever L2 can be grasped and rotated, and by rotating the lever L2, the shaft Lg is rotated to release the latch j from the latch receiving portion t6, thereby opening the door t2, similar to the first embodiment.
An opening L22 is provided on the front surface L21 of the lever L2 on the base end side of the lever L2.
A lock accommodating portion L42 is formed from the opening L22 of the lever L2 to the inside of the shaft portion Lg. The lock accommodating portion L42 is a space that accommodates the lock member L3.

The lever L2 includes an indicator L7 formed separately from the lever L2.
The indicator L7 is formed separately from the shaft portion Lg and the lock member L3.
The indicator L7 is positioned radially outside the locking member L3 (rotor L30) (on the outer surface of the rotor L30) and can be displaced circumferentially around the locking member L3. The locked/unlocked state of the locking member L3 can be determined by the orientation of the indicator L7, which changes with the displacement.

In this example, a cover L20 is provided on the front surface L21 of the lever L2 near the base end of the lever L2 to open and close the opening L21 and the indicator L7.
The cover L20 is rotatably fastened by a screw L25 between the base end (top end) of the lever L20 and the opening L22, and the opening L22 can be opened and closed by rotating the cover L20 with a finger around the screw L25. Opening the cover L20 to open the opening L22 allows a key to be inserted into a key insertion hole L33 of the lock member L3, which will be described later. Closing the cover L20 covers the indicator 7 as well as the opening L22.
The cover L20 is provided with an indicator display section L23, which is a small window that penetrates the cover L20 from front to back. When the cover L20 is closed, the indicator display section L23 exposes a part of the display area L70 of the indicator L7 to the outside of the cover L20. The indicator 7 will be described in detail later.

The shaft portion Lg has a latch accommodating portion L41 corresponding to the latch accommodating portion 41 in Figures 10(B)(C) and 11(A), and a latch piece L44 accommodated in the latch accommodating portion L41 (Figures 14(B), 15(B), 16(B)(D) and 18(A)(C)).
The latch accommodating portion L41 is a space provided behind the lock accommodating portion L42 and connected to the lock accommodating portion L42.
The latch accommodating portion L41 extends in a direction perpendicular to the central axis, and the interior of the latch accommodating portion L41 is formed with dimensions that allow the latch piece L44 to slide smoothly in the direction perpendicular to the central axis. The side surface of the shaft portion Lg has an opening L41a that allows the latch piece L44 to appear and disappear from the latch accommodating portion L41.

The inner peripheral surface of the lock accommodating portion L42 on the opening L22 side provides an indicator accommodating portion L29, which has an inner diameter larger than other portions of the inner peripheral surface of the lock accommodating portion L42. The indicator accommodating portion L29 is a space formed between the inner peripheral surface of the lock accommodating portion L42 and the outer peripheral surface of the rotor L30.
After the lock member L3 (rotor L30) is accommodated in the lock accommodating section L42, the indicator L7 can be accommodated in the indicator accommodating section L29 from the opening L22, thereby positioning the indicator L7 radially outside the lock member L3 (rotor L30) (on the outer surface of the rotor L30).
After the indicator L7 is accommodated in the indicator accommodating portion L29, the cover L20 can be attached to the lever L3 with the screw L25. When viewed from the front of the L-shaped handle L, the cover L20 covers part of the indicator L7 even when it is open, preventing the indicator L7 from falling out of the indicator accommodating portion L29 through the opening L22 (see FIGS. 15A and 17A).

To avoid complexity, the illustration is omitted in Figures 14(B), 15(B), 16(B) and 18(A), but the lock accommodating section L42 is provided on the inner surface of the shaft section Lg with a first driver receiving section corresponding to the first driver receiving section 42a of the first embodiment, a second driver receiving section corresponding to the second driver receiving section 42b of the first embodiment, and a pull-out prevention locking section corresponding to the pull-out prevention locking section 42c of the first embodiment (see Figures 10(C) and 11(A)).
The first driver receiving portion and the second driver receiving portion are grooves that are provided on the inner peripheral surface of the shaft portion Lg in the lock storage portion L42 and extend in the axial direction of the cylindrical lock storage portion L42. In this example, the second driver receiving portion is also provided on the inner peripheral surface of the lock storage portion L42 on the opposite side of the central axis from the first driver receiving portion.

The retaining latch is located rearward of the first and second driver receiving portions. The retaining latch is a groove extending circumferentially around the lock housing L42. Although not shown, a small hole (not shown) is provided in the shaft Lg that connects to the retaining latch of the lock housing L42. When removing the lock member L3 from the shaft Lg, a pin is inserted through the small hole to retract the retaining piece (described below) from within the retaining latch.

(Lock member L3)
The lock member L3 is rotatably accommodated in the lock accommodating portion L42, and the front surface L31 of the lock member L3 is exposed to the front surface side of the lever L2 through the opening L22, and can be covered by the cover L30 as described above.
The lock member L3 has the aforementioned key insertion hole L33 on the front surface L31. The lock and unlock can be performed by inserting a key (not shown) into the key insertion hole L33 and rotating the lock member L3.

The lock member L3 may be a tumbler lock having the same structure as the lock member 3 of the first embodiment. To avoid cluttering the drawings, the interior of the lock member L3 is omitted in Figures 14(B), 15(B), 16(B), and 18(A), which show the interior of the L-shaped handle L of the second embodiment, but the basic structure is the same as that of the lock member 3 shown in Figures 10(C) and 11(A).
That is, the lock member L3 includes a cylindrical rotor L30 that houses a plurality of driver pieces (not shown) similar to the driver pieces 34 of the first embodiment. The L-shaped handle L of the second embodiment differs from the first embodiment in that the base L21 and the shaft Lg of the lever L2 also serve as the lock case, in that it is provided with a dedicated lock case 4, and further differs from the first embodiment in that it includes a connecting member L39 (described later) that has a protrusion L36 on the connecting member L39 that corresponds to the protrusion 36.

The central axis (imaginary line) of the cylindrical rotor L30 extends in the front-rear direction. A connecting protrusion L38 is provided on a rear surface 32 of the rotor L30, protruding rearward beyond the remaining portion of the rear surface 32 (FIGS. 14B, 15B, 16B, 18A, and 19D-F).
The connecting protrusion L38 is a protruding portion whose longitudinal direction is perpendicular to the central axis (imaginary line) of the rotor L30. That is, the connecting protrusion L38 may be, for example, a generally rectangular shape in front view (rear view) with its long sides parallel to the perpendicular direction, or a generally elliptical shape with its long axis extending in the perpendicular direction.

A connecting member L39 formed separately from the rotor L30 is connected to the rear of the rotor L30. That is, the connecting member L39 is housed together with the lock member L3 (rotor L30) in the lock housing portion L42.
The connecting member L39 has a connecting recess L39a on the front surface for receiving the connecting protrusion L38.
By fitting the connecting projection L38 into the connecting recess L39a, the connecting member L39 can be connected to the rotor L30 and integrated with the rotor L30, and the connecting member L39 rotates together with the rotor L30 in response to the rotation of the rotor L30.
A protrusion L36 is provided at the rear end of the connecting member L39 (FIGS. 14B, 15B, 16B, and 18A).
However, the connecting member L39 may be formed integrally with the rotor L30 from the beginning as part of the rotor L30, and the connecting projection L38 and the connecting recess L39a may not be provided.

The multiple driver pieces are housed in rotor L30 and are able to freely protrude and retract from the outer periphery of rotor L30. The multiple driver pieces are arranged in the axial direction of rotor L30. Each of the driver pieces is biased by a resilient biasing member (not shown) and protrudes from the outer periphery of rotor L30. A spring can be used as the biasing member.

Furthermore, the rotor L30 houses the aforementioned retaining piece, similar to the retaining piece 35 of the first embodiment, so that it can freely protrude and retract from the outer surface of the rotor (not shown). The retaining piece is biased by a resilient biasing member (not shown) and protrudes from the outer surface of the rotor L30. In this example, the retaining piece is located behind the row of driver pieces. A spring can also be used as the biasing member for the retaining piece (not shown).

The front side L30a of the rotor L30 including the front surface L31 has a larger diameter than the rear side L30b of the rotor L30 where the driver piece appears and disappears (FIGS. 14B, 15B, 16B, and 18A).
In the second embodiment, a rotation transmission part L37 that protrudes higher than other parts of the rear side L30b is provided on the outer periphery of the front end of the rear side L30b of the rotor L30. The rotation transmission part L37 is an arc-shaped protrusion provided along the circumferential direction of the rotor L30 (FIGS. 19(G) to 19(I)).
The width of the protrusion of the rotation transmitting portion L37 does not exceed the outer periphery of the front side L30a of the rotor L30 in the radially inward and outward directions.

In the second embodiment, similar to the rotation transmission unit 37 of the first embodiment, the rotation transmission unit L37 is formed over a range of central angles of approximately 180 degrees in the circumferential (rotational) direction of the rotor L30, corresponding to the rotation angle (approximately 180 degrees) of the lock member L3 with the key inserted. However, when a lock member L3 with a rotation angle other than 180 degrees is used, the rotation transmission unit L37 may be formed over a range of central angles other than 180 degrees that corresponds to the rotation angle of the lock member L3.
In this example, with respect to the rotation direction (circumferential direction) of the rotor L30, the locking direction is the forward direction and the unlocking direction is the reverse direction, and the end of the rotation transmission part L37 facing the forward direction forms the first abutment part L37a, and the end of the rotation transmission part L37 facing the reverse direction forms the second abutment part L37b (Figures 19 (G) to (I)).

The rotation transmission part L37, which is formed in an arc shape in the circumferential direction (rotation direction) of the rotor L30 of the lock member L3, has an intermittent part L37e in the middle of the arc, and the intermittent part L37e interrupts the rotation transmission part L37 in the circumferential direction (rotation direction) of the rotor L30 (FIG. 18(D)). In this example, the intermittent part L37e is provided at a position corresponding to the opening of the cross hole 37e in the first embodiment.
Therefore, strictly speaking, the rotation transmission part L37 is composed of a leading part L37c that leads during forward rotation and a following part L37d that follows during forward rotation, separated by a cut-off section (the above-mentioned intermittent part L37e), and with respect to the rotation direction, the first abutment part L37a is the end of the leading part L37c facing the forward rotation direction, and the second abutment part L37b is the end of the following part L37d facing the reverse rotation direction.

However, this rotation transmission section L37 can also be considered continuous, ignoring the above-mentioned interrupted sections (i.e., there are no interrupted sections). This is because, in this embodiment, the L-shaped handle L may be implemented without the interrupted section L37e. In this example, as described above, the interrupted section L37e causes the rotation transmission section L37 to be composed of two discontinuous sections (sections): the leading section L37c and the trailing section L37d. Alternatively, the rotation transmission section L37 may be composed of three or more sections interrupted circumferentially around the rotor L30, or three or more protrusions protruding radially outward from the rotor L30, with the section or protrusion facing the forward rotation direction at the leading end during forward rotation being the first abutment section L37a, and the section or protrusion facing the reverse rotation direction at the rearmost end during forward rotation being the second abutment section L37b.

With respect to each of the driver pieces of the lock member L3, by inserting a key (not shown) into the rotor L30 through the key insertion hole L33, each driver piece sinks into the rotor L30, making it possible to rotate the key.
The protrusion L36 is provided on the rear surface L32 of the rotor L30 at a position eccentric from the central axis of the rotor L30, and rotates with the rotation of the lock member L3 (rotor L30). That is, the protrusion L36 performs a circular motion with the rotation of the rotor L30 when locking and unlocking (FIGS. 16C and 18C).

The latch piece L44 has a protrusion receiving portion L44a (Figures 16(B)(D) and 18(A)(C)). The protrusion receiving portion L44a is a recessed portion provided on the front surface of the latch piece L44 and recessed rearward. The inner wall defining the latch accommodating portion L41 of the shaft portion Lg has a space portion L41b formed in accordance with at least the trajectory of the circular motion of the protrusion L36 so as not to interfere with the circular motion of the protrusion L36.

Although not shown in the figures, similar to the first embodiment, when storing the lock member L3 (rotor L30) in the lock storage section L42, the key is inserted into the key insertion hole L33 of the rotor L30 and the driver pieces are recessed within the rotor L30 before storage. The retaining pieces are then retracted by pressing them with a finger and pressed against the inner circumferential surface of the shaft portion Lg that defines the lock storage section L42, and the rotor L30 is stored in the lock storage section L42 with the retaining pieces remaining recessed.

When rotor L30 is housed as described above, the driver piece is aligned with the second driver housing portion. The retaining piece protrudes from rotor L30 at the retaining latch portion, preventing rotor L30 from moving forward or backward. Furthermore, when the key is removed from rotor L30, the driver piece protrudes into the second driver housing portion. With the driver piece protruding into the second driver housing portion, rotor L30 becomes unable to rotate.

When assembling the L-shaped handle L, the latch piece L44 is accommodated in the latch accommodation portion L41 of the shaft Lg before attaching the shaft Lg to the base L1. After attaching the shaft Lg to the base L1, the connecting member L39 and the lock member L3 (rotor L30) are sequentially accommodated in the lock accommodation portion L42 as described above.
In the latch accommodating portion L41, the protrusion L36 of the connecting member L39 fits into the protrusion receiving portion 44a of the latch piece L44. When the driver piece protrudes into the second driver accommodating portion, the protrusion L36 causes the latch piece L44 to sink into the latch accommodating portion 41.
In other words, when the key is inserted and the locking member L3 is attached to the lever L2, and then the key is removed without rotating it, the driver piece protrudes within the second driver receiving portion, and when the driver piece is within the second driver receiving portion, the latch piece L44 is submerged within the connecting member L39 (latch accommodating portion L41), and the lever L2 can be rotated relative to the base L1.

Although not shown, to lock the lever L2 and prevent it from rotating, the key is inserted into the key insertion hole 33L to retract the driver piece into the rotor L30, and then the key is rotated to rotate the lock member L3. This rotation of the lock member L3 causes the driver piece to reach the first driver receiving portion, and when the key is removed, the driver piece protrudes into the first driver receiving portion. When the driver piece is in the first driver receiving portion, the protrusion L36 of the rotor L30 causes the latch piece L44 to protrude from the opening L41a to the outside of the shaft portion Lg (latch accommodating portion L41), and the protruding portion of the latch piece L44 is inserted (engaged) into the latch receiving portion L17, thereby locking the lock member 3 (see FIGS. 18A and 18C ).
To unlock, insert the key into the key insertion hole L33 again and rotate the key in the opposite direction (reverse rotation) to move the protrusion L36 to its original position before locking and sink the latch piece L44 into the shaft portion Lg (latch accommodating portion L41).

The indicator L7 is a component formed separately from the lever L2, the shaft Lg, and the lock member L3, and as described above, the indicator L7 is accommodated in the indicator accommodating portion L29 (Figures 14(B), 15(B), 16(B), and 18(A)).
More specifically, the indicator L7 comprises an indicator portion L71, the front of which is partially exposed from the indicator display portion L23, a thin plate-like annular portion L73 that is integral with the indicator portion L71 and is formed in a ring shape in a front view along the outer peripheral surface of the lock member L3, a cylindrical neck portion L74 that extends rearward from the annular portion L73, and a follower portion L72 that is provided on the inner peripheral surface of the neck portion L74 (Figure 14(B), Figures 15(A)(B), Figures 16(A)(B), Figures 17(A)(B), Figures 18(A) and Figures 19(A)-(F)).

The indicator portion L71 is a portion on the front side of the annular portion L73 that protrudes radially outward from the rotor L30 beyond the other portions of the annular portion L73 and the outer periphery of the neck portion L74. In other words, the indicator portion L71 is a portion of the annular portion L73 that extends radially outward.
The neck portion L74 is formed integrally with the annular portion L73 and is attached to the outer periphery of the rotor L30 together with the annular portion L73, and is rotatable relative to the rotor L30.
In the indicator accommodating portion L29, the portion accommodating the indicator portion L71 is a shallow space whose front-to-back width (depth) is smaller than that of the portion accommodating the neck portion L74, and the portion of the shaft portion Lg that defines the rear end of the shallow space is aligned with the rear surface of the indicator portion L71.

The aforementioned display area L70 for displaying the locked/unlocked state is provided on the front surface of the indicator portion L71.
The display area L70 is color-coded according to the rotation direction (circumferential direction) of the rotor L30. Specifically, in the figures, the area with grid lines (locked display area) and the area with spots (unlocked display area) are colored differently (FIGS. 16(A), 17(B), and 19(A) to (C)). The locked area with grid lines indicates the locked state of the lock member L3, and the unlocked area with spots indicates the unlocked state of the lock member L3.
In this example, the locked area with the grid lines is green, and the unlocked area with the spots is red, in the display area L70. However, this color scheme is merely an example, and other color schemes may be used, and each area may be distinguished by letters, symbols, pictures, etc. instead of by color, or each area may be distinguished as a colored area or an uncolored area, as in the first embodiment.

The driven portion L72 is a portion that protrudes in a substantially arcuate shape from the inner peripheral surface of the cylindrical neck portion L74 toward the rotor L30 in the circumferential direction of the rotor L30 (the direction in which the rotor L30 rotates), and follows the outer peripheral surface of the rotor L30.
In the circumferential direction of the rotor L30 (rotation direction of the rotor L30), one end of the driven portion L72 constitutes a first abutted portion L7a that faces (abuts upon rotation) the first abutment portion L37a of the aforementioned rotation transmission portion L37, and the other end of the driven portion L72 constitutes a second abutted portion L7b that faces (abuts upon rotation) the second abutment portion L37b of the aforementioned rotation transmission portion L37 (Figures 19 (G) to (I)).

When viewed from the front of the lever L2, the first abutment portion L37a of the rotation transmission portion 37 of the lock member L3 and the first abutted portion L7a of the indicator L7 are located on the same circumference, and when the lock member L3 rotates, the first abutment portion L37a pushes and rotates the first abutted portion L7a.
Furthermore, when viewed from the front of the lever L2, the second abutment portion L37b of the rotation transmission portion L37 of the lock member L3 and the second abutted portion 7b of the indicator L7 are also located on the same circumference, and when the lock member L3 rotates in the reverse direction, the second abutment portion L37b pushes and rotates the second abutted portion L7b.
The circumference on which the first abutment portion L37a and the first abutted portion L7a are arranged and the circumference on which the second abutment portion L37b and the second abutted portion L7b are arranged do not have to have the same diameter or front-to-back position, but since this allows the surrounding configuration of the indicator accommodating portion L29 and the like to be compact, it is preferable that the circumference on which the first abutment portion L37a and the first abutted portion L7a are arranged and the circumference on which the second abutment portion L37b and the second abutted portion L7b are arranged have approximately the same diameter and front-to-back position, as in the first embodiment.

On the other hand, in the circumferential direction of the lock member L3 (rotor L30), the distance between the first abutment portion L7a and the second abutment portion L7b of the indicator L7 (the length of the arc formed by the circumferential follower portion L72) is smaller than the distance between the first abutment portion L37a and the second abutment portion L37b (the length of the arc formed by the circumferential rotation transmission portion L37).
Specifically, the central angle φ of the arc between the first abutment portion L37a and the second abutment portion L37b in the rotation transmission portion 37 is approximately 180 degrees (semicircle), while the central angle θ of the arc between the first abutted portion 7a and the second abutted portion 7b in the driven portion L72 is an acute angle (Figure 18 (D)).

When the latch piece L44 is stopped within the latch accommodating portion L41 by the protrusion L36 and the latch piece L44 has not entered the latch receiving portion L17, i.e., when the lever L2 is in an unlocked state where it can be grasped and turned, the indicator L7 (indicator portion L71) exposes the unlocked display area in the display area L70 from the indicator display portion L23 of the closed cover L20 to the outside of the cover L20, indicating that the lever L2 is in an unlocked state (Figure 19 (A)).

When locking, the lock member L3, i.e., the rotor L30, rotates (forward) by operating the key (FIGS. 19(B)(H)). The first abutment portion L37a of the rotation transmission portion L37 of the lock member L3 abuts against and presses the first abutment portion L7a of the indicator L7, displacing the indicator L7 inside the indicator storage portion L29 (FIGS. 19(C)(I)). This displacement of the indicator L7 changes the position of the display area L70 of the indicator portion L71, which is exposed from the indicator display portion L23, from the unlocked display area to the locked display area (FIGS. 17(A)(B)).

When unlocking again, the lock member L3, i.e., the rotor L30, rotates (reversely) due to key operation, causing the second abutment portion L37b of the rotation transmission portion L37 of the lock member L3 to abut against and press the second abutment portion L7b of the indicator L7, thereby displacing the indicator L7 within the indicator storage portion L29 to its original position before locking (Figures 19(A) and 19(G)). This displacement of the indicator L7 causes the display area L70 of the indicator portion L71, exposed from the indicator display portion L23, to change position from the locked display area to the unlocked display area (Figures 15(A) and 16(A)).

As described above, the length of the driven portion L72 between the first abutment portion L7a and the second abutment portion L7b in the circumferential direction of the lock member L3 (rotor L30) is shorter than the length between the first abutment portion L37a and the second abutment portion L37b of the rotation transmission portion L37, and the angular range of the central angle over which the indicator L7 rotates (displaces) is smaller than the angular range (of the central angle) over which the lock member L3 rotates when the key is operated (Figure 18 (D)).

Therefore, during the above locking and unlocking operations, even if the lock member L3 is rotated (forward) in the locking direction by operating the key from the unlocked state (Figures 19(A)(G)), the first abutment portion L37a does not immediately abut against the first abutted portion L7a of the indicator L7 (Figures 19(B)(H)). In the unlocked state, there is a gap between the first abutment portion L37a and the first abutted portion L7a, and this gap serves as a running section in the circumferential direction of the lock member L3. After passing through this running section, the first abutment portion L37a abuts against the first abutted portion L7a and pushes against the first abutted portion L7a, causing the indicator L7 to rotate later than the lock member L3 (Figures 19(C)(I)).

Similarly, even if the lock member L3 is rotated (reversely) in the unlocking direction by operating the key from the locked state, the second abutment portion L37b does not immediately come into contact with the second abutment portion L7b of the indicator L7. In the locked state, there is a gap between the second abutment portion L37b and the second abutment portion L7b, and this gap serves as a circumferential run-up section (reverse run-up section) of the lock member L3. After passing through this reverse run-up section, the second abutment portion L37b abuts against the second abutment portion L7b and pushes against the second abutment portion L7b. The indicator L7 rotates (reversely) after the lock member L3, and then enters the unlocked state (Figures 19 (A) (G)).

As described above, by making the central angle θ between the first abutment portion L7a and the second abutment portion L7b smaller than the central angle φ between the first abutment portion L37a and the second abutment portion L37b, the above-mentioned run-up section and reverse run-up section are secured, and the angular range (of the central angle) for rotating the indicator L7, i.e., the angular range of rotation of the indicator L7, can be made smaller than the angular range (of the central angle) for rotating the lock member L3 in the circumferential direction of the lock member L3, i.e., the angular range of rotation of the lock member L3.

In the L-shaped handle L of the second embodiment, the displacement range of the indicator L7 is kept small as described above, thereby increasing the design freedom of the indicator L7 and the indicator housing L29. If the rotation angle range of the indicator L7 were the same as that of the locking member L3, i.e., if the indicator L7 were to rotate integrally with the locking member L3, the left-right width of the lever L2 would need to be increased unless the indicator L7 was made smaller. Furthermore, if the indicator L7 were formed integrally with the locking member L3 (the area depicted on the locking member L3 as in Patent Document 1), the indicator L7 would be constrained by the dimensions of the locking member L3, making it impossible to ensure a large display area. The present invention relating to the second embodiment is also groundbreaking in that it solves these problems with a simple configuration.

In addition, the shaft Lg is provided with a restricting portion (not shown) that defines the shallow portion of the indicator accommodating portion L29 in the circumferential direction of the rotor L30 (the rotational direction of the indicator L7) and restricts the rotation of the indicator portion L71, thereby indirectly defining the rotation range of the rotor L30 relative to the shaft Lg. This restricting portion corresponds to restricting portions 29c and 29d in the first embodiment.

In the second embodiment, when the door t2 is closed and the latch j is housed in the latch receiving portion t6, the grip of the lever L2 is vertical, with the tip facing downward. However, as with the first embodiment, when the door t2 is closed and the latch j is housed in the latch receiving portion t6, the grip of the lever L2 may also be horizontal, with the tip facing sideways.

REFERENCE SIGNS LIST 1 Casing 2 Lever 3 Lock member 4 Lock case 5 Hook portion 7 Indicator 7a First abutted portion 7b Second abutted portion 8 Push button 10 Casing body 11 Fixing member 11a Pressing portion 11b Connecting portion 11c Fastening member insertion portion 12 Gasket 13 Storage portion 13a First recessed portion 13b Second recessed portion 13c Cylinder portion 13d Through portion 14 Flange 14b Recessed portion 14c Protruding portion 15 Groove 16 Fastening member 17 Latch receiving portion 20 Hinge portion 20a (of hinge portion 20) Base 20b (of hinge portion 20) Horizontal axis 21 (of lever 2) Opening 22 Opening (key operating portion)
23 Indicator display portion (of opening 21) 24 Lock mounting portion 25 Case mounting portion 26 Fitting portion 27 Fastening hole 28 Fastener 29 Retraction portion 29a Lever-side edge portion 30 Rotor (of lock member 3) 30a Front side (of rotor 30) 30b Rear side (of rotor 30) 31 Front surface (of rotor 30) 32 Rear surface (of rotor 30) 33 Key insertion hole (of rotor 30) 34 Driver piece (of lock member 3) 35 Anti-withdrawal piece (of lock member 3) 36 Protrusion (of lock member 3) 37 Rotation transmission portion (of lock member 3) 37a First abutment portion 37b Second abutment portion 37c Leading portion (of rotation transmission portion 37) 37d Trailing portion (of rotation transmission portion 37) 37e Cross hole 41 Latch accommodating portion (of lock case 4) 41a Opening 42 Lock accommodating portion (of lock case 4) 42a First driver receiving portion 42b Second driver receiving portion 42c Pull-out prevention latching portion 43 Mounting portion (of lock case 4) 43a Hole (of mounting portion 43) 43b Fitting portion (of lock case 4) 44 Latch piece (of lock case 4) 44a Projection receiving portion 70 Display area (of indicator 7) 71 Indicator portion (of indicator 7) 72 Follower portion (of indicator 7) 73 Collar portion (of indicator 7) 74 Neck portion (of indicator 7) 80 Extension space (of lever 2) 81 Shaft stopping portion (of push button 8) h Flat handle j Latch t Distribution board box t1 Main body (of distribution board box 1) t2 Door (of distribution board box 1) t3 Mounting surface t4 (of door t2) Mounting hole t5 (of door t2) Opposite surface t6 (opposite the mounting surface t3) Latch receiving portion L L-shaped handle L1 Base L2 Lever L3 Locking member L7 Indicator L7a First abutment portion L7b Second abutment portion L10 Flange-shaped portion L11 (of base L1) Front portion L12 (of base L1) Rear portion L13 (of base L1) Nut member L17 Latch receiving portion L20 Cover L21 (of lever 2) Front surface L22 (of lever 2) Opening L23 (of lever 2) Indicator display portion L25 (of cover L20) Screw L29 Indicator accommodating portion L30 Rotor L30a (of locking member L3) Front side L30b (of rotor L30) Rear side L31 (of rotor L30) Front surface L32 (of rotor L30) Rear surface L33 (of rotor L30) Key insertion hole L36 (of rotor L30) Protrusion L37 (of connecting member L39) Rotation transmission portion L37a (of lock member L3) First abutment portion L37b Second abutment portion L37c Leading portion L37d (of rotation transmission portion 37) Trailing portion L37e (of rotation transmission portion 37) Intermittent portion L38 Connecting protrusion L39 Connecting member L39a Connecting recess L41 Latch accommodating portion L41a Opening L41b Space portion L42 Lock accommodating portion L42a First driver receiving portion L42b Second driver receiving portion L42c Disengagement prevention engaging portion L44 Latch piece L44a Protrusion receiving portion L70 Display area L71 (of indicator L7) Indicator portion L72 (of indicator L7) Follower portion L73 (of indicator L7) Annular portion L74 (of indicator L7) Neck portion Lg (of indicator L7) Shank portion

Claims (3)

A flat handle has a casing with an opening on the front, and a lever provided so as to be able to appear and disappear from the opening of the casing, and by locking a lock member provided on the lever, the lever is kept housed in the casing so that it cannot be gripped,
An opening is provided on the front surface of the lever,
the locking member is disposed on the rear side of the lever, and a front surface of the locking member is exposed to the front side of the lever through the opening,
The locking member has a key insertion hole on a part of the front surface, and the locking and unlocking can be performed by inserting a key into the key insertion hole and rotating the locking member,
The lock member is generally cylindrical and has the key insertion hole at one end of the cylinder.
The lever includes an indicator and an indicator display portion.
a lock case for accommodating the lock member on the rear side of the lever;
The lock case accommodates a latch piece that appears and disappears from the lock case when the lock member rotates and is caught on the casing to perform the locking operation.
the indicator is formed separately from the lever and the lock member, and is disposed on the rear surface side of the lever radially outward of the rotation of the lock member, and is displaceable in the circumferential direction of the lock member;
the indicator display portion is a sub-opening provided in the lever separately from the opening, or an opening extension portion extending from the opening to the radially outer side of the opening, and the indicator display portion exposes at least a part of the indicator to the front side of the lever,
The displacement changes the area of the indicator exposed from the indicator display unit, thereby indicating the locked and unlocked states,
The indicator includes an indicator portion exposed from the indicator display portion, and a follower portion having a generally arc-shaped front view, which is provided integrally with the indicator portion at the rear of the indicator portion and follows the outer peripheral surface of the lock member.
With respect to the rotation of the locking member, the locking direction is defined as a forward rotation direction and the unlocking direction is defined as a reverse rotation direction, and the locking member has a first abutment portion facing the forward rotation direction and a second abutment portion facing the reverse rotation direction,
The indicator includes a first contact portion that is pressed by the first contact portion when the lock member is rotated forward, thereby rotating the indicator forward, and a second contact portion that is pressed by the second contact portion when the lock member is rotated backward, thereby rotating the indicator backward,
In the circumferential direction of the lock member, the distance between the first abutted portion and the second abutted portion is smaller than the distance between the first abutted portion and the second abutted portion, and in the circumferential direction of the lock member, the angle range of the central angle in which the indicator rotates, i.e., the displacement , is smaller than the angle range of the central angle in which the lock member rotates,
A flat handle in which one end of the follower portion is the first abutment portion and the other end of the follower portion is the second abutment portion in the circumferential direction of the lock member, and the follower portion follows the rotation of the lock member to displace the indicator portion. 2. The flat handle according to claim 1, wherein the indicator portion has two different colored regions in the circumferential direction of the lock member, and the color seen through the indicator display portion indicates whether the lock is locked or unlocked. An L-shaped handle having a base fixed to a door, with the front side of the door being the front side and the back side of the door being the rear side, a shaft protruding from the base to the front side and the back side of the base, a rod-shaped lever connected to or formed integrally with the shaft and rotatable relative to the base, and a locking member preventing the lever from rotating relative to the base,
An opening is provided on the front surface of the lever,
the locking member is rotatably accommodated in at least one of the lever and the shaft portion, and at least a portion of a front surface of the locking member is exposed to the front surface of the lever through the opening,
The locking member has a key insertion hole on a part of the front surface, and the locking and unlocking can be performed by inserting a key into the key insertion hole and rotating the locking member,
The lock member is generally cylindrical and has the key insertion hole at one end of the cylinder.
a lock accommodating portion extending from the lever to the inside of the shaft portion and communicating with the opening portion to accommodate the lock member;
The inner peripheral surface of the base has a recess as a latch receiving portion that recedes radially outward from the lock accommodating portion,
The shaft portion has an opening that penetrates from the lock accommodating portion to the outer circumferential surface of the shaft portion,
The lock accommodating portion accommodates a latch piece that appears and disappears from the opening when the lock member is rotated and is caught in the latch receiving portion to perform the locking.
the lever includes an indicator;
the indicator is formed separately from the lever, the shaft, and the lock member, and is disposed radially outward of the rotation of the lock member so as to be displaceable in the circumferential direction of the lock member;
The direction of the indicator changes due to the displacement, thereby indicating the locked or unlocked state;
The lever is provided with a cover that can be opened and closed to cover the front surface of the locking member and the indicator.
With respect to the rotation of the locking member, the locking direction is the forward rotation direction and the unlocking direction is the reverse rotation direction, and the locking member has a first abutment portion facing the forward rotation direction and a second abutment portion facing the reverse rotation direction,
The indicator includes a first contact portion that is pressed by the first contact portion when the lock member is rotated forward, thereby rotating the indicator forward, and a second contact portion that is pressed by the second contact portion when the lock member is rotated backward, thereby rotating the indicator backward,
In the circumferential direction of the lock member, the distance between the first abutted portion and the second abutted portion is smaller than the distance between the first abutted portion and the second abutted portion, and in the circumferential direction of the lock member, the angle range of the central angle in which the indicator rotates, i.e., the displacement , is smaller than the angle range of the central angle in which the lock member rotates,
The lever includes an indicator display portion,
the indicator display portion is an opening provided in the cover or a notch provided on the periphery of the cover,
The indicator display portion exposes at least a part of the indicator to a front side of the lever,
The displacement changes the area of the indicator exposed from the indicator display unit, thereby indicating the locked and unlocked states,
The indicator includes an indicator portion exposed from the indicator display portion and a follower portion that is integral with the indicator portion and has a generally arc-shaped front view along the outer peripheral surface of the lock member,
An L-shaped handle in which one end of the follower portion is the first abutment portion and the other end of the follower portion is the second abutment portion in the circumferential direction of the lock member, and the follower portion follows the rotation of the lock member to displace the indicator portion.