JP4366536B2 - Sash locking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sash locking device.
[0002]
[Prior art]
As a sash locking device, a handle shaft is rotatably attached to a handle base fixed to one of the shoji summons, and a handle is attached to the tip of the handle shaft. A lock arm having a lock portion protruding toward the handle base side at the tip is attached to the portion between the two so as to rotate in conjunction with the handle. A stopper provided with a locking portion that can lock the locking portion is fixed, and the locking portion is attached to the stopper so that the summing rods of both shoji screens are pulled toward each other when the lock arm is rotated when the handle is locked. 2. Description of the Related Art Conventionally, a drawing guide surface capable of guiding to a locking portion is formed.
[0003]
According to the above-described locking device, the sashes can be improved in airtightness because the summons of the two shoji screens are attracted and brought into close contact with each other as the handle is locked.
[0004]
By the way, in a sash particularly requiring airtightness, a rotary cam or a wedge piece for attracting the shoji may be attached to the door toe of the shoji. In that case, even if the shoji is moved to the closed position, if the hand is subsequently released from the shoji, the shoji may be pushed back by the rotating cam or the wedge piece. Therefore, in the case of the sash provided with the above-described locking device, it is necessary to perform the locking operation of the handle while pressing the shoji so that it is not pushed back, and the usability is not good.
[0005]
Therefore, as a means for solving such problems, a sash locking device having a shoji drawing mechanism, that is, a mechanism capable of moving the shoji to a closed position has been proposed. In this locking device, a draw arm having a draw portion projecting toward the handle base side at the tip portion of the handle shaft between the lock arm and the handle base rotates in conjunction with the handle. The draw guide surface that can guide the draw part is formed on the stopper so that when the draw arm rotates in accordance with the locking operation of the handle, the summons of both shoji are drawn together (See, for example, Patent Document 1 below).
[0006]
[Patent Document 1]
Japanese Patent Publication No. 58-21075 (Claims, FIGS. 1-6, etc.)
[0007]
[Problems to be solved by the invention]
However, in the case of the sash locking device provided with the above-mentioned drawing mechanism, since it is necessary to attach a drawing arm in addition to the lock arm to the handle shaft, the structure is complicated and the drawing arm is provided. It was necessary to lengthen the handle shaft only, and the appearance was not good.
[0008]
An object of the present invention is to provide a sash locking device that has a simple structure and an excellent appearance, despite having a drawing mechanism in addition to a drawing mechanism.
[0009]
[Means for Solving the Problems and Effects of the Invention]
In the sash locking device according to the present invention, a handle shaft is rotatably attached to a handle base fixed to one of the shoji summons, and a handle is attached to a distal end portion of the handle shaft. At the part between the handle base, a lock arm having a lock portion protruding toward the handle base side at the tip is attached so as to rotate in conjunction with the handle. A stopper with a locking part that can lock the lock part of the lock arm is fixed, so that when the lock arm rotates in accordance with the locking operation of the handle, the summons for both shojis are drawn together Is formed with a drawing guide surface capable of guiding the lock portion to the locking portion, in the portion of the lock arm between the lock portion and the handle shaft. A draw part that protrudes toward the handle base side is provided, and when the lock arm rotates in accordance with the locking operation of the handle, the draw part is provided so that the summons for both shoji are drawn together. A draw guide surface capable of guiding is formed.
[0010]
According to the locking device described above, the lock arm is provided with a drawing portion, and the drawing portion is guided by the drawing guide surface of the stopper, so that the summons for both shoji can be drawn from each other. Therefore, the structure can be simplified, the shaft portion of the handle need not be so long, and the appearance is good.
[0011]
In the sash locking device according to the present invention, it is preferable that the drawing portion is a roller provided on the handle base side of the lock arm so as to be rotatable about an axis parallel to the length direction of the lock arm.
[0012]
If the draw part is constituted by the roller as described above, the lock arm can be smoothly rotated, and there is no possibility that the locking operation of the handle will be hindered.
[0013]
The draw guide surface of the stopper is formed at a position where it can face the draw portion when the lock arm rotates, and is usually adjacent to the draw guide surface. The shape of the draw guide surface is not particularly limited as long as it can draw the shojis of the both shojis from each other by engaging with the draw part of the lock arm, but usually it is on the side of the stop of the stopper. A curved surface or an inclined surface that gradually protrudes toward the lock arm as it approaches is obtained.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the present invention will be described with reference to FIGS. In the following description, the near side in FIG. 1 is referred to as “inside” and the far side is referred to as “outside”. “Left and right” refers to the case viewed from the inside.
[0015]
1 to 3, the sash locking device according to the present invention has a handle shaft (3) rotatably attached to a handle base (2) fixed to a summoning ridge (11) of a shoji (1A). The handle (4) is attached to the tip of the handle shaft (3), and the handle base (2) side of the tip of the handle shaft (3) is between the handle (4) and the handle base (2). A lock arm (5) having a lock part (51) protruding toward the door is provided to rotate in conjunction with the handle (4), and is locked to the summoning pod (11) of the shoji (1B). A stopper (6) having a locking portion (61) capable of locking the locking portion (51) of the arm (5) is fixed. The stopper (6) is locked so that when the lock arm (5) rotates in accordance with the locking operation of the handle (4), the summing rods (11) of both shojis (1A) (1B) are attracted to each other. A pulling guide surface (62) capable of guiding the portion (51) to the locking portion (61) is formed.
[0016]
A draw part (52) protruding toward the handle base (2) side is provided at a portion between the lock part (51) and the handle shaft (3) in the lock arm (5), and a stopper ( 6), when the lock arm (5) rotates in accordance with the locking operation of the handle (4), the drawing part (11) of the shoji (1A) (1B) A draw guide surface (63) capable of guiding 52) is formed.
[0017]
Each of the shojis (11) of the shojis (1A) and (1B) is made of a hollow metal material having a substantially square cross section. A vertical partition wall (111) extending inward and outward is integrally formed in the summon box (11) of each shoji (1A) (1B). Vertical slits (112) are formed on the left side wall of the summon bowl (11) of the external shoji (1A) and on the right side wall of the summon bowl (11) of the inner shoji (1B), respectively. The side edge of the glass plate (13) is fitted through the bead (12). A part of the packing (14) that seals between the summons (11) of the inner and outer shoji (1A) (1B) is fitted on the inner wall of the summon (11) of the shoji (1A). A groove (113) is formed.
[0018]
The handle base (2) has a vertically long plate shape. A central portion of the length of the handle base (2) is projected in a table shape toward the left, and a handle shaft insertion hole (not shown) is formed here. The handle base (2) is screwed to the indoor side portion of the outer surface of the left side wall of the summon (11) of the shoji (1A).
[0019]
Although not shown in detail, the handle shaft (3) is inserted into the insertion hole of the handle base (2), and is rotatably attached to the handle base (2) by an appropriate means such as a nut. . Further, the handle shaft (3) has a handle base (2) so that the lock portion (51) of the lock arm (5) can be held in a locked state where the lock portion (51) is locked to the locking portion (61) of the stopper (6). ) Is urged by a leaf spring (not shown) provided in the interior.
[0020]
The handle (4) includes a hollow cylindrical mounting portion (41) that is fitted and fixed to the tip of the handle shaft (3), and a gripping portion (42) that extends in a radial direction from the tip of the mounting portion (41). Yes.
[0021]
The lock arm (5) includes a cylindrical portion (53) having both ends opened in the left-right direction at the base end portion. The tubular portion (53) is rotatably fitted to a portion of the handle shaft (3) between the handle (4) and the handle base (2). At the end of the tubular part (53) on the handle (4) side and / or the handle base (2) side, the attachment part (41) of the handle (4) and / or the edge of the insertion hole of the handle base (2) An engagement portion (531) that can be engaged with the engagement portion (411) formed on is formed. When these engaging portions (411) and (531) are engaged with each other at a predetermined rotational position of the handle (4), the lock arm (5) is locked when the handle (4) is locked. ) Is rotated by a certain angle (for example, 45 °) from the unlocked position, but is not rotated together with the handle (4) and is held at the original unlocked position. Similarly, during the unlocking operation of the handle (4), the lock arm (5) rotates together with the handle (4) while the handle (4) rotates by a certain angle (for example, 45 °) from the locked position. Without being held in the original locked position.
[0022]
The lock portion (51) is, for example, a metal collar (not shown) that is rotatably attached to a shaft portion (not shown) formed at the front end portion of the right side surface of the lock arm (5), and the POM is attached to the collar. It is formed by fitting a cap (511) made of resin or the like.
[0023]
The draw section (52) includes a roller (521) provided on the handle base (2) side of the lock arm (5) so as to be rotatable about an axis parallel to the length direction of the lock arm (5). A recess (54) is formed in a portion between the handle shaft (3) and the lock portion (51) on the right side surface of the lock arm (5). A part of the roller (521) is accommodated in the recess (54), and is rotatably attached to the lock arm (5) by a pin (522). Accordingly, the roller (521) is only slightly protruded toward the handle base (2) side of the lock arm (5) and is not so conspicuous in appearance. The roller (521) is formed of, for example, POM resin.
[0024]
The stopper (6) is in the form of a vertically long plate, and is screwed at the same height as the handle base (2) on the outer surface of the left side wall of the summon bowl (11) of the inner shoji (1B). . A substantially L-shaped projecting portion is formed on the left side surface of the stopper (6) as viewed from the left side surface having the vertical wall portion (601) and the horizontal wall portion (602) at the center of its length. The locking part (61) is formed by a recess (603) between the vertical wall part (601) and the horizontal wall part (602). As shown in FIG. 3, the upper side of the inner side surface of the vertical wall portion (601) is an inwardly convex curved surface, and the lower portion is a vertical surface. An attracting guide surface (62) is formed by the inner surface of the vertical wall portion (601). In addition, as shown in FIG. 2, the left side surface of the vertical wall portion (601) has an inwardly convex curved surface at the top and a vertical surface at the bottom. A draw guide surface (63) is formed by the left side surface of the vertical wall portion (601).
[0025]
Next, with reference to FIGS. 2 and 3, the sash locking process by the apparatus will be described. First, the external shoji (1A) and the internal shoji (1B) are moved to the closed position. At this time, if the hand is released from the shoji (1A) (1B), the shoji (1A) (1B) will be pulled by the pulling rotary cam (not shown) etc. May be pushed back in the opening direction (see FIG. 2A). In this state, the summons (11) of the shoji (1A) and (1B) are not in close contact with each other (see FIG. 3 (a)).
[0026]
Then, holding the handle (42) of the handle (4) in the unlocking position with the tip upward, pulling it forward, the handle (4) rotates in the locking direction. The lock arm (5) is not interlocked with the handle (4) and does not rotate (see FIGS. 2 (a) and 3 (a)).
[0027]
When the rotation of the handle (4) exceeds a predetermined angle, the lock arm (5) rotates in conjunction with the handle (4). Then, first, the drawing portion (52) of the lock arm (5) moves downward while contacting the drawing guide surface (63) of the stopper (6), thereby causing the external shoji (1A) and the internal shoji ( The summons (11) of 1B) are drawn to each other (see FIG. 2 (b)).
[0028]
As the handle (4) continues to rotate, the lock portion (51) of the lock arm (5) then moves downward while contacting the pulling guide surface (62) of the stopper (6). As a result, the summons (11) of the external shoji (1A) and the internal shoji (1B) are attracted to each other (see FIG. 2B).
[0029]
When the handle (4) is rotated until the tip of the gripping part (42) is substantially downward, as shown in FIG. 2 (C) and FIG. 3 (c), the external obstacle (1A) and the internal obstacle (1B) Is drawn to the fully closed position, and the lock part (51) is engaged with the locking part ( 61) to complete the locking of the sash.
[0030]
In the case of the above embodiment, the drawing operation by the contact movement between the drawing section (52) and the drawing guide surface (63), and the contact movement between the lock section (51) and the drawing guide surface (62). Although the former starts slightly earlier, it may be configured to start almost simultaneously. Further, both operations may be performed such that the former ends first or both ends simultaneously. The timing of the operation as described above is determined by the shape of the drawing guide surface (63) and the drawing guide surface (62) of the stopper (6) and the lock portion (51) from the base end of the lock arm (5). It can be adjusted by appropriately changing the distance to the draw unit (52).
[0031]
According to the sash locking device described above, since the drawing portion (52) made of the roller (521) is integrated into the lock arm (5), the structure of the device is simple. Further, the length of the handle shaft (3) is not so long and the appearance is good.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an unlocked state of a sash locking device according to an embodiment of the present invention.
2 is a front view sequentially illustrating a locking process of the locking device of the sash of FIG. 1. FIG.
3 is a side view sequentially illustrating a locking process of the sash locking device of FIG. 1. FIG.
[Explanation of symbols]
(1A): Koji
(1B) ： Neutako
(11): Summoning bowl
(2): Handle base
(3): Handle shaft
(4): Handle
(5): Lock arm
(51): Lock part
(52): Drawer
(521): Roller
(6): Stopper
(61): Locking part
(62): Attraction guide surface
(63): Draw guide

Claims (2)

A handle shaft is pivotally attached to the handle base fixed to one of the shoji summons, a handle is attached to the tip of the handle shaft, and a portion of the handle shaft between the handle and the handle base is A lock arm having a lock portion protruding toward the handle base at the tip is attached so as to rotate in conjunction with the handle, and the lock portion of the lock arm is locked to the other shoji summon. A stopper with a locking part that can be fixed is fixed, and when the lock arm rotates in accordance with the locking operation of the handle, the locking part is guided to the locking part so that the summons of both shoji are pulled together In the locking device of the sash in which a possible drawing guide surface is formed,
The lock arm portion between the lock portion and the handle shaft, together with the draw only portion protruding toward the handle base side is provided, a stopper, when the locking arm is rotated with the locking operation of the handle, A draw guide surface that can guide the draw part is formed so that the summons of both shoji screens are drawn together ,
During the locking operation of the handle, the lock arm does not rotate with the handle and is held in the original unlocked position while the handle is rotated 45 ° from the unlocked position. , Sash locking device.   The draw part is composed of a roller that is partly housed in a recess formed on the side of the lock arm on the handle base side and that is rotatably provided about an axis parallel to the length direction of the lock arm. The sash locking device according to claim 1.

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