JPH09273348A - Lock structure of handle for hinged door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock structure which locks securely a handle in a simple manipulation and which is relatively costless in the production, by providing a fixing piece always urged by a spring member. SOLUTION: This lock structure is constituted of an actuation body fitted to a handle 2 of a door 1 and provided with a locking hollow shaft 31 and a control rod 33 equipped in the hollow shaft, and a receiver body 5 fixed to a notch of the locking hollow shaft 31 and provided with fixing piece holding the door in the closed position. The fixing part of the fixing piece is always urged to the locking position by a spring member and moved to the separating direction of the lock when it is pushed by the front end of the control rod 33 or the hollow shaft.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knob with a lock mechanism attached to an opening door such as a storage shelf.

[0002]

2. Description of the Related Art In general, handles such as knobs for opening and closing operations attached to hinged doors such as storage shelves and cupboards are generally designed in a creative manner, but few are provided with a lock mechanism. Since the lock mechanism used for doors has a complicated structure and is expensive, it cannot be applied to the above-mentioned doors.

The most commonly used simple stop mechanism has the following structure. Permanent magnets or iron pieces are attached to the inner surface of the corner of the door and the corresponding portions of the accommodation space, respectively, and the door is closed by the magnetic attraction force. Further, while the insertion piece is provided so as to project from the inner surface of the corner of the door, a pair of opposed small rollers are urged by spring force to be attached to corresponding positions of the accommodation space so that their peripheral surfaces come into contact. In this structure,
The insertion piece is inserted between the peripheral surfaces of the small rollers when the door is closed, and the insertion piece cannot be separated from the peripheral surface unless the door is opened with a strong force to some extent.

[0004]

However, all of the above-mentioned conventional structures are only simple stop structures, and therefore, for example, when the loads are collapsed or moved due to vibration due to an earthquake, the doors are pushed from the inside. It is easily pushed open. Especially when the door of the upper shelf is opened, luggage is dropped, which is very dangerous.

In view of the problems of the prior art, it is an object of the present invention to provide a lock mechanism that can be manufactured at a relatively low cost and that can reliably lock an opening door by a simple operation.

[0006]

SUMMARY OF THE INVENTION The present invention has the following features in order to achieve the above object. That is, the present invention comprises an actuating body attached to an opening door or a handle of the opening door, and a receiving body attached to the accommodation space side. The actuating body includes a locking hollow shaft and an operating rod loaded in the locking hollow shaft. The locking hollow shaft has a base end fixed to the door or the handle, and has a notch formed on the peripheral surface of the front end. The operating rod has a length that penetrates the handle and reaches the cutout portion of the locking hollow shaft, is constantly urged toward the proximal end portion by the spring member, and the tip end thereof is the cutout portion of the locking hollow shaft. The proximal end projects from the outer surface of the handle without reaching the part. Further, the above-mentioned receiving body is a disengageable engagement between a position where it locks the movement of the locking hollow shaft and a position where it is disengaged from the position where it is locked in the notch of the locking hollow shaft that has entered. A locking piece having a portion is provided. The locking piece is always urged by the spring member to the position for locking the locking portion, and moves to the releasing position when pushed by the tip of the locking hollow shaft or the operating rod. .

The handle has, for example, a knob shape, and the actuating body is provided on the back surface so as to project. Then, the operation rod is inserted into the locking hollow shaft of the actuating body through a through hole penetrating from the front surface to the back surface. The operation rod has a base end projecting from the front of the handle by a spring mounted in the through hole.

Further, the receiving body may have the following structure, for example. A seat portion fixed to the wall surface on the side of the accommodation space, a frame body having a substantially U-shaped section fixed to the seat portion, and a substantially U-shaped cross section attached so as to close the opening side of the frame body. Locking piece. The locking piece is pivotally supported on both sides of the base end portion by the frame body, and the spring body for urging the tip end portion upward is attached to the bent portion, and the tip end portion is formed on both inner walls of the frame body on both sides thereof. It is slidably supported in the groove. The tip of the locking piece serves as a locking part that is locked to the cutout part of the locking hollow shaft of the actuating body, and the locking position and the position separated from the locking position due to the bending deformation of the bending part. Elastically displaced between.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on illustrated embodiments. FIG. 1 shows a lock mechanism according to an embodiment of the present invention, which is applied to a knob-shaped handle 2 of a single-opening door 1 of a storage cabinet. The lock mechanism includes an actuating body 3 attached to the handle side of the door 1 and a receiving body 5 fixed to a corresponding position on the inner wall surface of the housing space 4 of the cabinet.

The actuating body 3 is provided with a locking hollow shaft 31 having a base end 31a fixed to the side of the handle 2 that contacts the door surface. The locking hollow shaft 31 penetrates the handle mounting hole 1a of the door 1 and extends toward the accommodation space, and a notch 32 is formed on the peripheral surface near the tip. As shown in FIGS. 2 and 3, the notch 32 has a sloped portion 32a that gradually enters deeper in the radial direction toward the tip of the shaft, and a hooking portion 32b that is cut straight in the radial direction. Have.

An operating rod 33 is mounted inside the locking hollow shaft 31. As shown in the cross-sectional view of FIG. 3, the operating rod 33 has a length that reaches the latching portion 32b of the cutout portion 32 through a through hole 21 that penetrates the handle 2 in the front-rear direction. The operation rod 33 has a base end portion 33 which is always outside the handle due to the spring 22 loaded in the through hole.
It is urged in the direction of a. In this state, the operating rod 33
Has a tip 33b in front of the notch 32 in the locking hollow shaft 31 to open the notch 32, while a base 33a projects from the outer surface of the handle 2. . Therefore, the operating rod 33 moves forward in the locking hollow shaft 31 against the spring 21 by pushing the base end portion 33a, and the tip end portion 33b reaches the latching portion 32b in the cutout portion 32. When the pressing force applied to the end 33a is released, the spring 21 returns to the above state.

In the figure, reference numeral 34 is a male screw formed on the outer periphery of the intermediate portion of the locking hollow shaft 31 protruding from the handle mounting hole 1a of the door 1, 35 is a nut screwed to this male screw, and 36 is a washer. Reference numeral 37 is a retaining piece of the operating rod 33.

As shown in the perspective views of FIGS. 4 and 5, the receiver 5 has a rectangular seat 51 for fixing the receiver 5 to the inner wall surface of the side wall of the cabinet, and a frame 52 is formed upright. Frame 5
2, the locking piece 53 is attached. The frame 52 has support pieces 52a facing each other on both sides, and is formed in a substantially U-shaped vertical cross section by connecting the rear ends of both support pieces 52a with a connection piece 52b. The corner portion from the right front end to the upper end in the figure of the support piece 52a, which is opened, is largely cut off obliquely. Further, facing grooves 52c are formed in the inner surfaces of both support pieces 52a so as to face each other and extend from the upper end to the seat portion 51 in the figure.

The locking piece 53 includes a base piece 53a and a guide piece 53b.
It is made by connecting the ends of each other with pins so that they can bend freely.
It is attached to the frame body 52 so as to form a substantially V-shape for closing the opening end thereof. The base piece 53a is pin-pivotally supported on both sides of the base end portion thereof at a position located slightly on the back side of the front end of the support piece 52a. On the other hand, the guide piece 53b is formed longer than the base piece 53a, and the surface thereof is curved in a slightly concave shape. A pin shaft 5 whose both ends are slidably fitted in the grooves of the support piece 52a at the tip of the guide piece 53b.
3c is attached. The tip portion of the guide piece 53b has a rounded outer surface as a whole along the pin shaft 53c, and constitutes a locking portion 53d that is locked in the notch 32 of the locking hollow shaft 31 described above.

A spring member 54 is attached to a bent portion 53e which is a connecting portion between the base piece 53a and the locking piece 53b. The spring member 54 constantly biases the locking piece 53 to a position (see FIG. 4) that sufficiently closes the open end of the frame body 52, and the guide piece 53.
When a pressing force acts on b, the pin shaft 53c moves along the groove 52c, and the entire locking piece is deformed so as to sink into the frame body 52 (see FIG. 5). When it is released, the guide piece 53b is returned to the position shown in FIG.

The receiving body 5 having the above-mentioned structure is the frame body 52.
The supporting piece 52a is positioned vertically and the connecting piece 52b is positioned on the inner side of the accommodation space 4, and is fixed to the wall surface near the opening of the cupboard with screws via the screw holes 51a of the seat 51.

The operation of this lock mechanism will be described with reference to FIGS. 6 to 8. In the handle 2 from which the actuating body 3 projects, the cutout portion 32 of the locking hollow shaft 31 has the locking piece 53 of the receiving body 5.
It is positioned so as to face the locking portion 53d of the above, is inserted into the mounting hole 1a of the door 1, and is fixed by tightening the nut. When the door is closed, the tip 31b of the locking hollow shaft 31 abuts on the guide piece 53b of the locking piece 53 (see FIG. 6). Guide piece 53b
Is pushed by the tip of the locking hollow shaft 31 and is displaced toward the seat 51 together with the base piece 53a via the bent portion 53e (see FIG. 7). When the door is completely closed, the lock hollow shaft 3
1 slides on the surface of the guide piece and the notch 32 faces the engaging portion 53d at the tip of the guide piece 53b. In this state, the locking piece 53 releases the pressing force from the locking hollow shaft 31, and the bent portion 53
By the action of the spring member 54 of e, the guide piece 53b and the base piece 53
a and elastically return to the original position, and the locking portion 53d fits into the cutout portion 32 (see FIG. 1). Since the cutout portion 32 has the sloped surface portion 32 a, the locking portion 53 is formed in the cutout portion 32.
It will be locked smoothly. Also, slot talk will be as short as possible. Even if the handle 2 is pulled to open the door 1, the latching portion 32b of the cutout portion 32 is caught by the locking portion 53d, so that the door 1 is locked and cannot be opened.

To open the door 1, the base end portion 33a of the operating rod 33 protruding from the surface of the handle 2 is pushed. The tip portion 33b of the operation rod 33 advances in the locking hollow shaft 31 and slides on the guide piece surface of the locking piece 53 to strike the guide piece 53b (see FIG. 8), which is directed toward the seat portion 51. Push back. The guide piece 53b has the bent portion 5 as in FIG.
It is displaced together with the base piece 53a via 3e, and the locking portion 53d is disengaged from the cutout portion 32 of the operation rod 33. Therefore, the user can release the locked state of the locking hollow shaft 31 and the locking piece 53 by pulling the handle 2 while pushing the operation rod 33 and open the door 1. When the door 1 is opened, the locking piece 53 moves the operating rod 33 to the guide piece 53b.
Is released from the pressing force of, and the spring member 54 returns to the original position again, and the waiting state of the locking hollow shaft 31 is entered.

The lock mechanism of the present invention can be attached to a desired position of the cabinet such that there is a place for fixing the actuating member. For example, with respect to the double door, the lock mechanism according to the present invention may be provided on the handles at the upper and lower ends of the door, and the relatively easy stop mechanism may be used at the other end. It is also possible to apply it to the upper door.

[0020]

As described above, according to the present invention, when the door is closed, the locking hollow shaft of the operating body mounted on the door side presses the locking piece of the receiving body on the accommodation space side once. After displacing in the direction of sinking, the locking part of the locking piece is elastically restored by the biasing force of the spring member at the position of the notch on the peripheral surface and locked in the notch, so you only have to close the door. The locking mechanism can be activated automatically.

Further, an operating rod urged to the outside of the door is mounted inside the locking hollow shaft, and by pushing this operating rod, the locking portion in the notch portion is pushed back, so that the locking mechanism. Can be easily released.

Further, according to the present invention, since the structure of the actuating body mounted on the door side and the receiving body mounted on the storage space side is relatively simple, it can be manufactured at low cost, and as described above, the opening / closing operation is performed. Is also something that can be easily done.

[Brief description of drawings]

FIG. 1 is a plan view of a lock mechanism according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of an operating body that constitutes the lock mechanism according to the embodiment of FIG.

3 is a cross-sectional view of the actuating body of FIG.

FIG. 4 is a perspective view of a receiver constituting the lock mechanism according to the embodiment of FIG.

5 is a perspective view showing a state in which a locking piece of the receiving body in FIG. 4 is displaced.

6 is a plan view showing the operating state of the lock mechanism of FIG. 1, immediately after the door is closed and the hollow shaft for locking of the operating body comes into contact with the locking piece.

7 is a plan view showing the operating state of the lock mechanism of FIG. 1, in which the locking hollow shaft tip contacts the locking piece, the locking piece is pushed, and the locking portion is slightly depressed.

FIG. 8 is a view showing an operating state of the lock mechanism of FIG. 1, in which the operating rod is pushed to release the locked state of the door, and the locking portion locked in the cutout portion of the locking hollow shaft is pushed down. The top view of the state just before.

[Explanation of symbols]

 1 ... Door 2 ... Handle 22. Spring 3 ... Actuator 31 .... Hollow shaft 31a for locking ... ... Base end of locking hollow shaft 31b ... Tip of locking hollow shaft 32 ... Notch 33 ... Operation rod 33a ... Operation Base end of rod 33b ... Tip of operation rod 4 ... Storage space 5 ... Receiving body 51 ... Seat 52 ... ..Frame 52c..groove 53..stopping piece 53a..base piece 53b..guide piece 53c..shaft 53e .. Locking part 53e ... Bending part 54 ... Spring member

Claims (4)

[Claims] 1. An operating body mounted on the side of a hinged door, and a receiving body mounted on the side of a storage space, wherein the operating body is a locking hollow shaft and an operating rod loaded in the locking hollow shaft. The locking hollow shaft has its base end fixed to the open door or a handle attached to the open door, while the notch is formed on the peripheral surface of the tip, and the operating rod connects the handle and the open door. It has a length that penetrates and reaches the cutout portion, and the spring member allows the base end portion to project from the front surface of the handle without the tip end reaching the cutout portion of the locking hollow shaft. Direction is constantly urged, and the receiving body is locked to the notch of the locking hollow shaft that has entered and locks the movement of the locking hollow shaft, and a position where it is separated from the position. With a locking piece having a locking part that can be displaced between This locking piece is always urged by the spring member to a position where the locking portion is locked, and moves to the releasing position when pushed by the tip of the locking hollow shaft or the operating rod. A locking mechanism for the handle for the opening door. 2. The operating body is provided so as to project from the rear surface of a knob-shaped handle, and the operating rod has a through hole penetrating from the front surface to the rear surface of the handle and a mounting hole for inserting a hollow shaft for locking a door. 2. The lock for the door handle according to claim 1, wherein the lock is inserted through the lock hollow shaft, and the base end portion of the lock is protruded from the front of the handle by a spring mounted in the through hole. mechanism. 3. The receiving body, a seat portion fixed to a wall surface on the accommodation space side, a frame body having a substantially U-shaped section fixed to the seat portion, and an opening side of the frame body so as to be closed. And a locking piece having a substantially V-shaped cross-section, which is attached to the frame. Both sides of the base end are pivotally supported by the frame body, and both sides of the tip part are formed on both inner walls of the frame body. The tip end portion is biased upward by a spring member that is slidably supported in the groove and is attached to the dogleg-shaped bent portion, and the tip end portion of the locking piece is a hollow for locking the actuation body. The locking mechanism for the hinged door handle according to claim 1, wherein the locking mechanism is a locking portion that is locked in the cutout portion of the shaft. 4. The locking piece is formed by flexibly connecting a base piece and a guide piece, both sides of a base end portion of the base piece are pivotally supported by both inner walls of the frame body, and a tip of the guide piece is a base. A spring member attached to a bent portion, which is a connecting portion between the piece and the guide piece, is biased upward and slides and displaces in a groove formed on both inner walls of the frame body. The lock mechanism for the handle for the opening door described in 3.