JP3804957B2 - Sliding door lock structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a sliding door lock structure, and more specifically, a lock structure that can perform temporary lock locking and temporary lock unlocking without using a key by pressing with a fingertip, elbow or an item held in a hand. The present invention relates to a lock structure such as a prefab building or a storeroom that can be securely locked by using.
[0002]
[Prior art]
Conventionally, sliding doors in prefabricated buildings or storerooms are usually locked and unlocked with a key, but recently, the structure is such that the heel part of the sliding door is engaged with the door stop and temporarily locked without using a key. I often see things. However, these methods have a problem that the temporary lock cannot be unlocked unless the operation part is turned with the fingertip or the lever is pinched, and the product cannot be operated with the hand held by both hands or the handicapped.
[0003]
In order to solve this problem, the applicant of Japanese Patent Application No. 2002-257282 has a sliding door lock structure that can be locked and unlocked temporarily even with items and elbows held in the hand and can be used safely by anyone. However, as shown in FIG. 11, the lock structure has a tongue 44 attached to the rear end of the cylinder lock 4, and a notch 111 for moving the tongue 44 upward on the upper surface of the casing 10, an operating portion. 20 is provided with a tongue engaging piece 26 and the operating portion is fixed by tilting the tongue 44 on the front surface of the tongue engaging piece 26. As a result, the collar 3 is also fixed. The end of the screw inserted into the mounting hole 10 and screwed into the casing 10 is fixed by abutting against the groove on the side wall of the cylinder lock 4. The groove has a slight play width and is temporarily locked in the locked state. When the unlocking pusher is pushed forcefully The cylinder moves forward by the play width, and at the same time, the tongue engagement piece moves slightly forward, so that the engagement between the buttock and the locking hole of the door is loosened, and the door is pressed firmly. When pulling, there was a problem that the door opened.
[0004]
[Problems to be solved by the invention]
Therefore, in order to solve the above problem, the present invention provides a more reliable locking structure that cannot be easily unlocked even if a force is applied in a state where the key is locked using a key. Objective.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that the shape of the plan view is formed in a square shape and the central portion thereof is pivotally supported with respect to the casing in the vertical direction and formed near the both ends of the front surface. An operation unit in which the temporary locking / unlocking pressing unit can be swung alternately in the front-rear direction, a box-shaped body having left and right side surfaces opened, and two parallel guide holes and one fulcrum shaft extending in the left-right direction on the upper and lower surfaces respectively. A guide case in which one of the guide holes is bent, and a connecting shaft with the operation unit for moving the collar part by changing the rocking of the operation part in the front-rear direction to the left-right direction. A link in which the three axes of the connecting shaft of the fulcrum shaft to the guide case and the collar part are arranged at a position of a substantially right triangle in plan view, and the hook point protrudes and retracts from the edge of the door and at the locking hole of the door stop part In order to disengage, the guide case is pivotally supported by two shafts in the vertical direction, and the guide case is And has a hook that can be swung back and forth, and a lock fitting that rotates simultaneously by inserting and turning a key, and the lock fitting engages the shaft of the guide case to prevent sliding of the hook A cylinder lock, a casing in which the operation part, the guide case, the link, the collar part, and the cylinder lock are disposed, and an inner cover for fixing the casing to the sliding door.
[0006]
With this configuration, the temporary lock can be unlocked simply by pressing the temporary lock locking push part or temporary lock unlocking push part of the operation part. However, the temporary lock can be easily unlocked and unlocked. Also, when the sliding door is open, the tip of the buttocks is hidden inside the door, so that clothes and body are not caught. It can also be locked with a cylinder lock using a key.
[0007]
According to the second aspect of the present invention, as a means for making the present locked state, the guide hole, which is bent at one end of the two parallel guide holes extending in the left-right direction on the upper and lower surfaces of the guide case, is vertically By extending the supporting shaft to the upper part so as to engage with the lock fitting, and inserting the key into the cylinder lock and turning it, the lock fitting rotates and the shaft is fixed at the bent portion of the guide hole. The part is configured to be fixed in a state of being engaged with the locking hole of the door stop.
[0008]
With this configuration, the present locking can be performed regardless of the temporary lock locked state and the temporary lock unlocked state. In addition, even if the temporary locking / unlocking pressing part is pushed forcefully in this locked state, the locking part of the lock metal prevents the shaft from moving backward, so that the cylinder lock is loaded in the rear direction. Since the flange portion is supported by the edge of the locking hole of the casing, the cylinder lock does not move, and the shaft is fixed and the engagement between the hook portion and the locking hole of the door stop portion is reliably maintained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view showing a lock device B attached to an end portion of the sliding door A. FIG. The operation unit 2 disposed in the front concave portion of the casing 1 of the locking device B has a substantially square shape in plan view, and a concave curved surface of the temporary lock locking pressing portion 21 on the front left side and the temporary lock unlocking pressing portion 22 on the front right side. It is formed, and both pushing parts swing back and forth alternately like a seesaw. When the temporary lock locking push portion 21 is pressed, the tip of the flange portion 3 protrudes and swings from the left side surface of the casing 1 and engages with a latching hole of a door stop (not shown), and the sliding door A is in a temporary lock locked state. When the temporary lock unlocking pressing portion 22 is pushed, the tip of the collar portion 3 is pulled into the casing 1 and the sliding door A is in an unlocked state. Also, the casing 1 incorporates a cylinder lock 4 that uses a key 41 to prevent the collar portion 3 from sliding and to perform the locking. A1 in the figure is a handle for opening and closing the sliding door A.
[0010]
FIG. 2 is an exploded perspective view showing the locking device B in an exploded manner. The casing 1 has a recess 11 in which the operation unit 2 fits in the front surface and a lock hole 12 in which the cylinder lock 4 fits. The inner cover 7 is covered and fixed from the back surface of the sliding door A, supported by the flange 13 over the entire circumference.
[0011]
The operation unit 2 is fitted in the recess 11 of the casing 1 and pivotally supports the center in the vertical direction with respect to the casing 1. The flange 3 is pivotally supported in the guide case 6 so as to be slidable in the left-right direction, and is fixed to the back surface of the casing 1 together with the guide cover 61. The cylinder lock 4 is inserted into the lock hole 12 of the casing 1 and fixed to the casing 1 with screws, and a lock fitting 42 that is rotated by the operation of the key 41 is screwed to the rear end. The link 5 is connected to the flange portion 3 that is pivotally supported by the guide case 6 and the operation portion 2 that is pivotally supported by the casing 1, and is pivotally supported in the guide case 6.
[0012]
The oscillator 8 is pivotally supported on the right side in the recess 11 of the casing 1 by a fulcrum shaft and is connected to the right inner wall of the operation unit 2 by attaching a tension spring 81 to the fulcrum shaft. The other end of the spring 81 is fixed to the casing. The temporary lock release lever 9 is disposed on the rear surface of the casing 1 so that the right end portion of the temporary lock release lever 9 abuts against a projecting piece 23 (see FIG. 4) formed on the rear surface of the temporary lock locking push portion 21 of the operation portion 2 when the right-hand portion is swung. Is supported in the vertical direction.
[0013]
FIG. 3 is a perspective view of the casing 1. A concave portion 11 for fitting the operating portion 2 and a locking hole 12 for fitting the cylinder lock are formed on the front surface, a flange portion 13 for fixing the sliding door A to the front edge is formed, and the operating portion 2 is placed in the concave portion 11. A pair of operation part bearings 14 in which a pair of shaft holes and stoppers are supported, a pair of oscillator bearings 15 that support the oscillator 8, a spring latching part 16 that fixes a tension spring 81, and a temporary lock unlocking lever A pair of lever bearings 17 that support 9 is formed. A shaft hole 18 that pivotally supports the operation unit 2 is formed on the upper and lower surfaces of the peripheral wall, a screw hole 19 for fixing the cylinder lock 4 is formed on the upper surface of the peripheral wall facing the lock hole 12, and a left side surface of the peripheral wall is formed. A notch 112 is formed for the eaves part 3 to appear and disappear.
[0014]
FIG. 4 is a perspective view of the operation unit 2 as viewed from the back side. The pair of protrusions 23 described above are formed on the back surface of the temporary lock locking push portion 21, and the outer peripheral side surface of the temporary lock lock push portion 21 is between the upper plate 51 and the lower plate 52 of the link 5 (see FIG. 5). A link connecting groove 25 to be inserted and connected to the connecting shaft 53 is formed, and a rocker connecting portion in which a pair of front and rear pieces for supporting the connecting shaft of the rocker 8 is formed on the back surface of the temporary lock unlocking pressing portion 22. A pair of 24 is formed.
[0015]
FIG. 5 is a perspective view of the state in which the flange portion 3, the link 5, the guide case 6, and the guide cover 61 are disassembled. The guide case 6 is a box-like body having left and right side surfaces opened, and a first guide hole 62, a second guide hole 63, and a joint fulcrum shaft hole 64 are formed on the upper and lower surfaces, respectively. The first guide hole 62 is a hole that is long in the left-right direction, and the second guide hole 63 is a hole that is parallel to the first guide hole 62 and has the same length, but the left end of the hole is bent forward so that the hole position is The first guide hole 62 is formed to be shifted to the rear left side.
[0016]
The flange part 3 is formed integrally with upper and lower plates 34 and 35 provided with a first shaft hole 32 and a second shaft hole 33 on the right side with a rearward flange 31 at the left end. The flange 3 is disposed in the guide case 6, the first shaft 65 passes through the first shaft hole 32 through the first guide hole 62, and the second shaft 66 passes through the second guide hole 63 to form the second shaft hole 33. To penetrate. The collar part 3 slides to the left and right with respect to the guide case 6, and the collar 31 swings backward at the left end of the sliding. The first shaft 65 is the length from the upper plane to the lower plane of the guide case, but the second shaft 66 is a length that projects from the upper plane of the guide case with the lower plane of the guide case as the lowermost portion and engages with the lock fitting. To form.
[0017]
The link 5 has an inverted character in plan view, and upper and lower plates 51 and 52 are integrally formed on the right half. A guide shaft 53 and a front end portion of the upper and lower plates 51 and 52 are connected to the connecting shaft 53 and the front end portion. A fulcrum shaft hole 54 for the case 6 is provided. A connecting groove 55 is formed in the left half of the link 5 between the upper plate 34 and the lower plate 35 of the flange 3 and connected to the second shaft 66 at the tip. The link 5 is disposed in the guide case 6 and connected to the flange portion 3, and the fulcrum shaft 67 passes through the fulcrum shaft hole 54 via the joint fulcrum shaft hole 64. Then, a guide cover 61 having a U-shaped cross section is placed from behind the guide case 6, and the upper and lower protrusions 611 at the front end of the guide cover are engaged with the upper and lower recesses 68 of the guide case 6. An elongated hole 612 is formed in the upper portion of the guide cover 61 so that the second shaft 66 can slide.
[0018]
FIG. 6 is a horizontal sectional view showing a locked state. By pushing the temporary lock locking pressing portion 21 of the operation portion 2 (arrow in the figure), the link 5 swings counterclockwise on the fulcrum shaft 67 in the drawing and the collar portion 3 slides leftward. By swinging clockwise around the axis about the single shaft 65, the collar 31 protrudes from the left end of the sliding door A and engages with the locking hole C1 of the door stop C.
[0019]
Further, the oscillator 8 is disposed at the right end in the operation unit 2, is pivotally supported by a pair of oscillator bearings 15 in the casing 1 by a fulcrum shaft 82, and a tension spring is connected to the oscillator connection unit 24 of the operation unit 2. It connects with the connection shaft 83 which latched 81. FIG. The other end of the tension spring 81 is hooked on the spring hooking portion 16 of the casing 1 with the fulcrum shaft 82 in between. In this state, a clockwise force is applied to the oscillator 8 in the drawing, and the tension spring 81 is positioned forward with respect to the fulcrum shaft 82, so that the temporary lock unlocking pusher 22 of the operation unit 2 is swung forward. Will be pulled to.
[0020]
FIG. 7 is a horizontal sectional view showing an unlocked state. By pressing the temporary locking / unlocking pressing portion 22 of the operation portion 2 (arrow in the figure), the link 5 swings clockwise around the fulcrum shaft 67 and the collar portion 3 around the first shaft 65 on the drawing. By swinging counterclockwise and then sliding to the right, the eaves 31 are retracted into the sliding door A. Furthermore, if the hand or elbow or the item held by the hand that has pushed the temporary locking / unlocking pressing portion 22 is slid rightward along the surface of the sliding door A, it protrudes from the surface of the sliding door A and is long in the vertical direction. The sliding door A can be opened because it is caught by the handle A1 (see FIG. 1). As described above, when the temporary lock is unlocked and the sliding door A is opened by a series of operations and the hand is closed, it can be easily performed even when the hand cannot be used.
[0021]
In this state, a counterclockwise force is applied to the oscillator 8 in the drawing, and the tension spring 81 swings backward with respect to the fulcrum shaft 82, so that the temporary lock unlocking push portion 22 of the operation unit 2 is swung back. Will pull in the direction. At this time, it is possible to confirm at a glance that the temporary lock is unlocked from a distance by coloring the peripheral wall surface 211 of the temporary lock locking pressing portion 21 of the operation unit 2 with a fluorescent color or a reflective paint.
[0022]
FIG. 8 is a sectional view showing the movement of the flange 3 in FIGS. 6 and 7 in an easily understandable manner. The states of unlocking from the locked state and opening the sliding door are shown in the order of (a), (b) and (c). In the locked state (a), the first shaft 65 of the flange 3 is positioned at the left end of the first guide hole 62 of the guide case 6 and the second shaft 66 is bent forward at the left end of the second guide hole 63. Located at the end of the portion, the collar 3 protrudes from the left end of the sliding door A with the collar 31 at the tip thereof, and is hooked on the edge of the locking hole C1 of the door stop C.
[0023]
Next, in the unlocked state (b), the first shaft 65 moves to a position slightly to the right from the left end of the first guide hole 62, and the second shaft 66 is bent forward of the second guide hole 63. It has moved to the position that came out of the part. Thus, the flange 3 is inclined slightly counterclockwise about the first shaft 65, and the flange 31 at the tip is detached from the edge of the locking hole C1.
Further, in the state (c) in which the sliding door A is slightly opened, the first shaft 65 is located at the right end of the first guide hole 62, and the second shaft 66 is located at the right end of the second guide hole 63. The part 3 slides rightward with the inclination of (b) and retracts the hook 31 at the tip into the end of the sliding door A.
[0024]
FIG. 9 is a horizontal cross-sectional view showing a state where the temporary lock release lever 9 of the closing prevention means is moved and unlocked similarly to the state of FIG. The temporary lock release lever 9 disposed substantially at the center of the back surface of the casing 1 is pivotally supported by the lever bearing 17 of the casing 1 in the vertical direction and moved clockwise in the drawing to operate the working side 91 at the right end of the temporary lock release lever 9. Since the pair of projecting pieces 23 formed on the back surface of the temporary lock locking pressing portion 21 of the portion 2 is pushed back, the temporary lock is unlocked and the sliding door A is opened.
[0025]
Moving the temporary unlocking lever 9 clockwise in the drawing means a natural hand movement in the right direction in the drawing (arrow in the drawing) to open the sliding door A from the inside of the building or storeroom (upper side in the drawing). The sliding door can be opened without recognizing that the temporary lock release lever 9 is a closing prevention means.
[0026]
10 is a perspective view showing the movement of the flange 3 and the lock fitting 42 in FIGS. 6 and 7 in an easy-to-understand manner. FIG. 10 shows a state of temporary locking from the unlocked state and (a) (b) (c ) In order. The lock fitting 42 is screwed to the rear end of the cylinder lock 4 so as to rotate together with the key 41 inserted into the cylinder lock 4. The lock fitting 42 has a hook 43 that engages with the tip of the second shaft 66, and the hook 43 is a protrusion having first to third hook surfaces 431, 432, 433, and the cylinder lock 4 is unlocked. In this state, the hook 3 is also in the unlocked state (a) is a state in which the engaging portion 43 is located at the upper left end of the second guide hole 63 in the drawing and the first engaging surface 431 is in contact with the second shaft 66. .
[0027]
Further, in the state (a) where the collar part 3 is temporarily locked, the hook part 43 does not change from the position (a) and the collar part 3 slides to the right in the drawing and the second shaft 66 is the second. By moving along the bent portion of the guide hole 63, the collar portion 3 is swung clockwise around the first shaft 65.
[0028]
Further, from the state of (b), the key 41 inserted into the cylinder lock 4 is turned into the locked state (c). In (c), the lock fitting 42 is rotated together with the key 41 and the engaging portion 43 is the second guide hole 63 in the drawing. The second hooking surface 432 and the third hooking surface 433 are in contact with the second shaft 66 and are located at the upper end of the bent portion at the right end to prevent the flange 3 from returning from the locked state to the unlocked state.
In addition to the procedure of changing the unlocked state (a) from the unlocked state (a) to the temporary locked state (b) and turning the key 41 to the final locked state (c) as described above, the unlocked state ( The locked state (c) can also be obtained by rotating the key 41 in a) and sliding the second shaft 66 to the right in the drawing by the engaging portion 43.
[0029]
【The invention's effect】
Temporary lock can be unlocked simply by pressing the temporary lock unlocking pusher or temporary lock unlocking pusher of the operation unit, so it can be easily carried out even with a hand held by both hands or a handicapped person. . Furthermore, if the hand or elbow or article that has pushed the temporary lock unlocking pressing portion is slid rightward along the surface of the door, the door is easily opened because it is caught by the handle protruding from the door surface. Also, when the sliding door is open, the tip of the buttocks is hidden inside the door, so that clothes and body are not caught.
[0030]
When the key is turned to the fully locked state and a force is applied to the temporary locking / unlocking pressing part of the operating part, the cylinder lock is conventionally inserted in the mounting hole of the casing from the outside. However, the lock structure of the present invention has a problem that the lock is released when an excessive force is applied. Since the force is applied in the pull-in direction and the flange part of the cylinder lock is caught on the edge of the mounting hole of the casing, the cylinder lock does not move and the lock does not come off even if excessive force is applied. It became the lock structure with.
Further, by rotating the key, the temporary lock unlocked state can be changed to the final locked state without going through the temporary lock locked state, so that the operation is simplified.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a locking device according to the present invention. FIG. 2 is an exploded perspective view showing an exploded locking device. FIG. 3 is a perspective view of a casing as viewed from the front. FIG. 5 is a perspective view showing an enlarged main part. FIG. 6 is a horizontal sectional view showing a locked state. FIG. 7 is a horizontal sectional view showing a unlocked state. 6. Cross-sectional view showing the main part in FIG. 7 in an easy-to-understand manner. FIG. 9 is a horizontal cross-sectional view showing the state unlocked by the anti-locking means. FIG. 10 is a perspective view showing the main part in FIGS. FIG. 11 is a longitudinal sectional view showing a conventional lock structure.
A ... Sliding door B ... Locking device 1 ... Casing 2 ... Operation part 3 ... Claw part 4 ... Cylinder lock 42 ... Lock metal fitting 5 ... Link 6 ... Guide case 7 ... Inner cover 8 ... Oscillator 9 ... Temporary lock unlocking lever

Claims (2)

Temporary lock locking pusher and temporary lock unlocking pusher, which are formed in a square shape in plan view and pivoted in the vertical direction with respect to the casing and close to both ends of the front, swing back and forth alternately. A free operation part and a box-shaped body with open left and right side surfaces, each of which has two parallel guide holes and one fulcrum shaft hole extending in the left and right directions on the top and bottom surfaces, one of which is bent. The guide case and the connecting shaft between the operating portion, the fulcrum shaft to the guide case, and the connecting shaft between the flange and the guide portion are moved in order to move the hook by changing the swing in the front-rear direction of the operation portion to the left-right swing. A link that has three shafts arranged at a substantially right triangle position in plan view, and a hook that protrudes and retracts from the end of the door and engages and disengages from the locking hole in the door stop, so that the guide case moves up and down with two shafts. A flange that pivots in the direction and slides in the left-right direction and can swing in the front-rear direction; A cylinder lock that has a lock fitting that simultaneously rotates by inserting and turning the lock, and the lock fitting engages with the shaft of the guide case to prevent sliding of the collar part, and the operation part, the guide case, the link, and the collar part A sliding door lock structure comprising a casing in which the cylinder lock is disposed and an inner cover for fixing the casing to the sliding door. As a means to make this locked state, among the two parallel guide holes extending in the left-right direction on the upper and lower surfaces of the guide case, the shaft that pivotally supports the guide hole bent at one end in the vertical direction is engaged with the lock fitting. The lock fitting rotates by inserting the key into the cylinder lock and turning the lock so that the shaft is fixed at the bent part of the guide hole. The sliding door lock structure according to claim 1, wherein the lock structure is configured to be fixed in a state of being engaged with the hole.

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