JP2004278246A - Lock up construction for sliding door leaf - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a more reliable lock up construction which does not open a door by the moving of its hook portion even when a strong force is applied after fully locking it with a key. <P>SOLUTION: This lock up construction comprises an operating portion having a tentative locking pusher and a tentative unlocking pusher which freely swing back and forth, a link for moving the hook portion by changing the swing in back and forth direction of the operating portion to the swing in right and left directions, a hook portion with its tip which makes frequent appearances from the end portion of the door leaf and also a hook portion making linkage and separation with a linking hole of a door stop, a guide case as a journal of the link and the hook portion, a cylinder lock capable of avoiding the slide of the hook portion by making the back and forth and right and left movements of the guide case by a locking hardware by inserting and turning a key, and a casing for arranging the operating portion, guide case, link, hook portion and cylinder lock inside the casing, and an inner cover for fixing the casing to the sliding door leaf. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lock structure of a sliding door, and more specifically, a lock structure in which a key is not used by a pressing operation with a fingertip, an elbow or an article held in a hand, and a key is not used. The present invention relates to a lock structure such as a prefabricated building or a storeroom that can reliably use and lock the lock.
[0002]
[Prior art]
Conventionally, the locking and unlocking of a sliding door of a prefabricated building or storeroom is usually performed with a key.However, recently, the locking portion of the sliding door is hooked to the door stop without using a key and is temporarily locked. I often see things. However, these methods have a problem in that the temporary lock cannot be unlocked unless the operation unit is turned with the fingertip or the lever is pinched, so that a person holding the article with both hands or a handicap cannot operate.
[0003]
In order to solve this problem, the applicant of the present invention has disclosed in Japanese Patent Application No. 2002-257282 that a temporary door can be locked and unlocked even with an article or elbow held in a hand, and anyone can use the locking structure of a sliding door safely without difficulty. As shown in FIG. 11, this lock structure has a notch 111 for attaching the tongue 44 to the rear end of the cylinder lock 4 and moving the tongue 44 upward on the upper surface of the casing 10, The operating portion is fixed by tilting the tongue piece 44 to the front of the tongue piece engaging piece 26, and the hook 3 is also fixed. The tip of a screw inserted into the mounting hole of No. 10 and screwed into the casing 10 is fixed by abutting against a groove on the side wall of the cylinder lock 4, but the groove has a slight play width, and is temporarily locked in the fully locked state. When you push the unlocking part forcibly The cylinder moves forward by the play width, and at the same time, the tongue piece engaging piece moves slightly forward, so that the engagement between the hook and the locking hole of the door is weakened. There was a problem that the door opened when pulling.
[0004]
[Problems to be solved by the invention]
Accordingly, the present invention provides a more reliable lock structure that cannot be easily unlocked even when a strong force is applied in a state where the key is locked, in order to solve the above problem. Aim.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 has a provisional lock locking push portion formed in an elliptical shape in plan view, and having a central portion pivotally supported vertically with respect to a casing and formed near both ends in front. An operation unit that allows the temporary unlocking push unit to swing alternately in the front-rear direction; two parallel guide holes and one fulcrum shaft that are formed in a box-like body with left and right side surfaces and that extend in the left and right directions on the upper and lower surfaces, respectively; A guide case having a hole and one of the guide holes being bent, and a connecting shaft for connecting the operating portion to move the hook portion by changing the swing in the front-rear direction of the operating portion to the swing in the left-right direction. A link in which the three axes of the fulcrum axis and the hook part to the guide case are arranged at the position of a substantially right-angled triangle in plan view, and the hook tip protrudes and retracts from the door end and is inserted into the locking hole of the door stop. In order to disengage, the guide case is vertically supported by two shafts and slides in the left and right direction. And a lock that can rotate in the front and rear direction and a lock that rotates simultaneously by inserting and turning the key. The lock engages with the shaft of the guide case to prevent the slide of the hook. And a casing in which the operation unit, the guide case, the link, the hook, 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 locked and unlocked simply by pressing the temporary lock / lock release section or the temporary lock / release release section of the operation section. However, it is possible to easily lock and unlock the temporary lock. Further, when the sliding door is open, the tip of the hook is hidden inside the door, so that the clothes and the body do not get caught. In addition, it is also possible to perform the main locking with a cylinder lock using a key.
[0007]
According to a second aspect of the present invention, as a means for making the lock state, of the two parallel guide holes extending in the left-right direction on the upper and lower surfaces of the guide case, respectively, one of the guide holes, one end of which is bent, is vertically pivoted. The supporting shaft is extended upward so as to engage with the lock, and the lock is turned by the operation of inserting the key into the cylinder lock and turning the lock to fix the shaft at the bent portion of the guide hole, thereby securing the hook. The part was fixed so as to be engaged with the locking hole of the door stop.
[0008]
With this configuration, the main locking can be performed regardless of the provisional lock locking state and the provisional lock unlocking state. Further, even if the temporary lock release push portion is forcibly pressed in this locked state, the locking portion of the lock prevents the shaft from moving backward, so that a load is applied to the cylinder lock in the rearward direction. Since the flange portion is supported by the edge of the lock hole of the casing, the cylinder lock does not move, the shaft is fixed, and the engagement between the hook portion and the lock hole of the door stop is reliably maintained.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment 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 of a sliding door A. The operation unit 2 disposed in the front recess of the casing 1 of the lock device B has a substantially elliptical shape in plan view, and includes a temporary lock locking push unit 21 on the front left side and a concave curved surface of the temporary lock release push unit 22 on the front right side. It is formed, and both push parts swing back and forth alternately like a seesaw.
When the temporary lock locking push portion 21 is pressed, the tip of the hook portion 3 protrudes and swings from the left side surface of the casing 1 and engages with the engaging hole of the door stop (not shown), so that the sliding door A is in the temporary lock locked state, When the temporary lock release push portion 22 is pressed, the tip of the hook 3 is pulled into the casing 1 and the sliding door A is unlocked. The casing 1 incorporates a cylinder lock 4 which locks the hook 3 by using a key 41 to prevent the hook 3 from sliding. 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 lock device B in an exploded manner. The casing 1 has a concave portion 11 in which the operation portion 2 fits in the front surface and a lock hole 12 in which the cylinder lock 4 fits, and is inserted from the door front side into a mounting hole A2 formed near the end of the sliding door A, and the front surface of the casing 1 is inserted. It is supported by the flange portion 13 over the entire circumference, and the inner door 7 is covered from the back of the sliding door A and fixed.
[0011]
The operating section 2 is fitted into the concave portion 11 of the casing 1, and supports the center vertically with respect to the casing 1. The hook 3 is rotatably supported in the guide case 6 so as to be slidable in the left-right direction, and is fixed to the rear surface of the casing 1 together with the guide cover 61. The cylinder lock 4 is fitted into the lock hole 12 of the casing 1 and fixed to the casing 1 with a screw, and a lock fitting 42 which is rotated by operating the key 41 is screwed to the rear end. The link 5 is connected to the hook 3 pivotally supported by the guide case 6 and the operation unit 2 pivotally supported by the casing 1, respectively, and pivotally supported in the guide case 6.
[0012]
The rocker 8 is pivotally supported on the fulcrum shaft on the right side in the concave portion 11 of the casing 1 and a tension spring 81 is mounted on another shaft connected to the right inner wall of the operation section 2 to pull the fulcrum shaft therebetween. 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 such that the right end thereof abuts on a projecting piece 23 (see FIG. 4) formed on the rear surface of the temporary lock locking push portion 21 of the operation unit 2 when swinging rightward. To be supported vertically.
[0013]
FIG. 3 is a perspective view of the casing 1. A concave portion 11 for fitting the operation portion 2 and a lock hole 12 for fitting a cylinder lock are formed on the front surface, and a flange portion 13 for fixing to the sliding door A is formed on the front edge portion. A pair of operating portion bearings 14 having a pair of shaft holes and stoppers for shaft support, a pair of oscillator bearings 15 for supporting the oscillator 8, a spring retaining portion 16 for fixing a tension spring 81, and a temporary lock release lever 9 are formed as a pair of lever bearings 17 that support the shaft 9. A shaft hole 18 for supporting 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 an 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 hook 3 to protrude and retract.
[0014]
FIG. 4 is a perspective view of the operation unit 2 as viewed from the rear side. The above-mentioned pair of projections 23 are formed on the back surface of the temporary lock locking push portion 21, and the outer side surface of the temporary lock lock push portion 21 is formed 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 pair of front and rear pieces for supporting the connecting shaft of the rocker 8 are provided on the back surface of the temporary lock release push portion 22. 24 are formed as a pair.
[0015]
FIG. 5 is a perspective view of the disassembled state of the hook 3, the link 5, the guide case 6, and the guide cover 61. The guide case 6 is a box-shaped body having left and right side surfaces opened, and has a first guide hole 62, a second guide hole 63, and a joint fulcrum shaft hole 64 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 and has the same length as the first guide hole 62. However, the left end of the hole is bent forward to define the hole position. It is formed to be shifted to the rear left side with respect to one guide hole 62.
[0016]
The hook 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. The hook 3 is disposed in the guide case 6, penetrates the first shaft hole 32 through the first guide hole 62 with the first shaft 65, and the second shaft hole 33 through the second guide hole 63 with the second shaft 66. Through. The hook 3 slides left and right with respect to the guide case 6, and the hook 31 swings rearward at the left end of the slide. The first shaft 65 has a length from the upper surface to the lower surface of the guide case, while the second shaft 66 has a lower surface at the lower surface of the guide case and projects from the upper surface of the guide case to engage with the lock fitting. Formed.
[0017]
The link 5 has an inverted letter shape in plan view, and upper and lower plates 51 and 52 are integrally formed on the right half thereof, and the right and left ends of the upper and lower plates 51 and 52 are connected to the connecting shaft 53 and the front end of the operation unit 2 described above. A fulcrum shaft hole 54 for the case 6 is provided. The left half of the link 5 is formed between the upper plate 34 and the lower plate 35 of the hook 3 and has a connection groove 55 formed at the end thereof to be connected to the second shaft 66. The link 5 is disposed in the guide case 6, connected to the hook 3, and penetrates the fulcrum shaft hole 54 via the fulcrum shaft hole 64 at the fulcrum shaft 67. Then, the guide cover 61 having a U-shaped cross section is covered from the rear of 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 concave portions 68 of the guide case 6. An elongated hole 612 is formed at an upper portion of the guide cover 61 so that the second shaft 66 can slide.
[0018]
FIG. 6 is a horizontal sectional view showing the locked state. By pressing the temporary lock / locking push portion 21 of the operation unit 2 (arrow in the figure), the link 5 swings counterclockwise about the fulcrum shaft 67 in the drawing, and the hook 3 slides leftward, By swinging clockwise about the one shaft 65 in the drawing, the hook 31 projects from the left end of the sliding door A and engages with the locking hole C1 of the door stop C.
[0019]
An oscillator 8 is disposed at the right end in the operation unit 2, and is supported on a pair of oscillator bearings 15 in the casing 1 by a fulcrum shaft 82, and a tension spring is attached to the oscillator connecting portion 24 of the operation unit 2. 81 are connected by a connecting shaft 83 which is locked. The other end of the tension spring 81 is hooked on the spring hook 16 of the casing 1 with the fulcrum shaft 82 therebetween. In this state, a clockwise force is applied to the rocker 8 in the drawing, and the tension spring 81 is positioned forward with respect to the fulcrum shaft 82, so that the temporary lock release push portion 22 of the operation unit 2 is rocked forward. Will be pulled.
[0020]
FIG. 7 is a horizontal sectional view showing the unlocked state. By pressing the temporary unlocking / pressing portion 22 of the operation portion 2 (arrow in the figure), the link 5 swings clockwise around the fulcrum shaft 67 in the drawing, and the hook portion 3 moves around the first shaft 65 in the drawing. The hook 31 is retracted into the sliding door A by sliding rightward following the swinging in the counterclockwise direction. Further, when the hand or elbow or the article held by the hand which pressed the temporary lock release push portion 22 is slid rightward along the surface of the sliding door A as it is, it protrudes from the surface of the sliding door A and is formed vertically long. The door A can be opened because it is caught by the handle A1 (see FIG. 1). In this way, from the unlocking of the temporary lock to the opening of the sliding door A can be easily performed in a series of operations, even when the hands are closed or when the hands 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 rearward with respect to the fulcrum shaft 82, so that the temporary lock release push portion 22 of the operation unit 2 is swung rearward. Direction. Also, at this time, by coloring the peripheral wall surface 211 of the temporary lock locking push portion 21 of the operation unit 2 with a fluorescent color or a reflective paint, it is possible to confirm at a glance that the temporary lock is in the unlocked state even from afar.
[0022]
FIG. 8 is a sectional view showing the movement of the hook 3 in FIGS. 6 and 7 in an easily understandable manner. The unlocked state and the opening of the sliding door are shown in the order of (a), (b) and (c). In the locked state (a), the first shaft 65 of the hook 3 is located 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. At the end of the portion, the hook 3 projects the hook 31 at the tip from the left end of the sliding door A and hooks 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 a position that has come out of the part where it has been done. Thus, the hook 31 at the tip is disengaged from the edge of the locking hole C1 while the hook 3 is slightly tilted counterclockwise about the first shaft 65.
Further, in (c) where 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, and the hook The part 3 slides rightward with the inclination shown in FIG. 3B and retracts the hook 31 at its 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 unlocked in the same manner as in the state of FIG. 7. The temporary lock release lever 9 disposed substantially in the center of the rear surface of the casing 1 is vertically supported by the lever bearing 17 of the casing 1 and is moved clockwise in the drawing to operate the working edge 91 at the right end of the temporary lock release lever 9. The pair of projecting pieces 23 formed on the back surface of the temporary lock locking push part 21 of the part 2 are pushed back, so that the temporary lock is unlocked and the sliding door A opens.
[0025]
Moving the temporary lock release lever 9 clockwise in the drawing means a natural hand movement (arrow in the drawing) to open the sliding door A from the inside of the building or storage (upper side in the drawing) to open the sliding door A. The sliding door can be opened without recognizing that the temporary lock release lever 9 is a closing prevention means.
[0026]
FIGS. 10A and 10B are perspective views showing the movements of the hook 3 and the lock fitting 42 in FIGS. 6 and 7 in an easy-to-understand manner. FIGS. ). 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 an engaging portion 43 engaged with the tip of the second shaft 66, the engaging portion 43 is a projection having first to third engaging surfaces 431, 432, 433, and the cylinder lock 4 is unlocked. The hook portion 3 is also in the unlocked state in the state (a), 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 where the hook 3 is temporarily locked from the state of (a), the hook 3 slides rightward in the drawing and the second shaft 66 moves to the second shaft 66 without changing the hooking portion 43 to the position of (a). The hook 3 swings clockwise about the first shaft 65 by moving along the bent portion of the guide hole 63.
[0028]
Further, from the state of (b), the key 41 inserted into the cylinder lock 4 is turned to be in the fully locked state (c), and the lock fitting 42 turns around the key 41 together with the key 41 and the second guide hole 63 in the drawing. The second engagement surface 432 and the third engagement surface 433 are located above the bent portion on the right end, and the second engagement surface 433 is in contact with the second shaft 66 to prevent the hook 3 from returning from the locked state to the unlocked state.
As described above, in order to change the unlocked state (a) from the unlocked state (a) to the temporary locked state (b) to turn the key 41 to the fully locked state (c), the unlocked state ( By turning the key 41 in a) and sliding the second shaft 66 rightward in the drawing with the engaging portion 43, it is also possible to bring the lock state (c).
[0029]
【The invention's effect】
Locking and unlocking of the temporary lock can be easily performed even if the user holds the item with both hands or is handicapped because it is only necessary to press the temporary lock unlocking push portion or the temporary lock unlocking push portion of the operation unit. . Further, when the hand or elbow or the article that pressed the temporary lock release push 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. Further, when the sliding door is open, the tip of the hook is hidden inside the door, so that the clothes and the body do not get caught.
[0030]
Conventionally, when the key is turned to the fully locked state and a force is applied to the temporary lock release push part of the operation unit, a force is applied in the direction of pushing out the cylinder lock from the casing.The cylinder lock is inserted from the outside into the mounting hole of the casing However, the lock structure of the present invention has a problem in that when the force is applied to the temporary lock release push portion, the cylinder lock is pushed into the casing when an excessive force is applied and the lock is released. It is configured so that force acts in the direction of retraction, and the flange of the cylinder lock catches on the edge of the mounting hole of the casing, so even if excessive force is applied, the cylinder lock does not move and the lock does not come off, resulting in more reliability It became a lock structure with.
In addition, by turning the key, the locked state can be changed from the unlocked state to the locked state without going through the locked state, so that the operation is simplified.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a lock device of the present invention. FIG. 2 is an exploded perspective view showing an exploded lock device. FIG. 3 is a perspective view of a casing viewed from the front. FIG. FIG. 5 is an enlarged perspective view of a main part. FIG. 6 is a horizontal sectional view showing a locked state. FIG. 7 is a horizontal sectional view showing an unlocked state. 6 and 7 are cross-sectional views showing the main parts in an easy-to-understand manner. [FIG. 9] Horizontal cross-sectional views showing the unlocked state by the locking prevention means. [FIG. 10] Perspectives showing the main parts in FIGS. FIG. 11 is a longitudinal sectional view showing a conventional lock structure.
A ... Sliding door B ... Locking device 1 ... Casing 2 ... Operating part 3 ... Hook 4 ... Cylinder lock 42 ... Lock fitting 5 ... Link 6 ... Guide case 7 ... Inner cover 8 ... Oscillator 9 ... Temporary lock release lever

Claims (2)

Formed in an elliptical shape in plan view, with the central part pivotally supported vertically with respect to the casing, and the temporary lock locking push part and the temporary lock release push part formed near both ends on the front face are alternately swung in the front-rear direction. A freely-operating operation unit, a box-shaped body having left and right side surfaces opened, and two parallel guide holes and one fulcrum shaft hole extending in the left-right direction on the upper and lower surfaces thereof, and one of the guide holes is bent. A guide case, and a connecting shaft between the operating unit and a fulcrum shaft to the guide case and a connecting shaft between the hook and the hook for moving the hook by changing the front-back swing of the operating unit into the left-right swing. A link in which three shafts are arranged in a substantially right-angled triangular position in a plan view, and a hook case comes up and down from the door end and engages and disengages with a locking hole of a door stop. A hook that pivots in the direction, slides in the left and right direction, and can swing in the front and rear direction, A lock which has a lock which rotates simultaneously by inserting and turning the lock, and which lock engages with a shaft of the guide case to prevent the hook from sliding; A lock structure for a sliding door, comprising a casing in which a cylinder lock is disposed and an inner cover for fixing the casing to the sliding door. As means for making the lock state, a shaft that vertically supports a guide hole, one end of which is bent, of the two parallel guide holes extending in the left and right directions on the upper and lower surfaces of the guide case is engaged with the lock fitting. The lock is turned by the operation of inserting the key into the cylinder lock and turning it, so that the shaft is fixed at the bent portion of the guide hole, so that the hook is locked at the door stop. The lock structure for a sliding door according to claim 1, wherein the lock structure is configured to be fixed while being engaged with the hole.

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