JPH10280768A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a low-cost locking device capable of reliably doing a locking operation by simplifying a complicated construction of a locking device, reducing the number of parts and realizing easy production. SOLUTION: A case 88 hinged to a side end surface of a moving body such as a sliding door for closing an opening is provided, a rotating shaft 82b hinged in a freely rotatable manner is provided for a case 88. In addition, a contact portion 82a sticking out to a side end portion of the sliding door, and a hook member 82 equipped with a hook 82d which rotates, sticks out and locks by the rotation of the contact portion 82a when the sliding door is closed, is also provided. Moreover, a coil spring 84 exerting a hook member 82 capable of transferring exerting direction is provided in a direction for sticking out from a side end surface 50a of a moving body to the contact portion 82a and in a direction for projecting out the hook 82d. By the closing of the moving body, the contact portion 82a of the hook member 82 contacts to the end portion 70b of an opening frame and rotates and retreats, then the hook 82d rotates and sticks out thereby automatically locking the door.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device, and more particularly, to automatically locking a movable body such as a sliding door or a folding door by closing the movable body and opening the movable body by the closed momentum. The present invention relates to a locking device that prevents

[0002]

2. Description of the Related Art Conventionally, a movable body which moves from the vicinity of an arbitrary end of an opening frame to the opposite other end thereof is closed at an opening which enters and exits a room or the like. The movable body is provided with a locking device that automatically locks when closed. As the movable body to which the locking device is attached, for example, it is often attached to a movable body such as a sliding door, a folding door, and indoors, bathrooms,
Or it is installed in an opening such as a closet. Also,
Such a locking device is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-47.
No. 263, for example.

FIG. 3 is a perspective view showing a state in which a conventional locking device is mounted on a sliding door. 4 is a cross-sectional view showing the operation of the conventional locking device shown in FIG. 3, wherein FIG. 4A shows a state before the locking device is locked, and FIG. 4B shows a state after the locking device is locked. Are respectively shown.

As shown in FIG. 3, the conventional locking device is provided with a rectangular sliding door 1 having a thickness.
The sill 10a and the upper sill (not shown) opposing the sill 10a are slidably mounted.
The sliding door 1 is provided with an opening 1b substantially at the center of the side end surface 1a, and the locking device 30 is fitted in the opening 1b. In the vicinity of the opening 1b of the sliding door 1, a concave grip portion 1d for gripping a door tip is provided for sliding the sliding door 1 to open and close. A contact fitting 20 provided with an engagement pin 22 for engaging and locking with a locking device 30 is provided at an end 10b of the entrance 10 facing the side end surface 1a of the sliding door 1.
Is installed. An electric lock 24 is provided below the contact fitting 20 so that when the sliding door 1 slides and closes, a lock pin projects into a lock hole 1c provided in the sliding door 1.

[0005] As shown in FIG.
Is provided with a rectangular case 32, and a hook member 34 pivotably attached to the center of the case 32 so as to be rotatable around an A fulcrum 34 a. Further, an engaging member 35 urged by a spring 37 at one end of the hook member 34 and pivotally attached to the case 32 around a B fulcrum 35a.
Are engaged. The hook member 34 is connected to the A fulcrum 3
4a, a coil spring 38 is provided to abut on the hook member 34.
It is provided so as to urge the up-and-down operation and to smoothly perform the rotation operation. The lock member 36 is urged by a spring 39 so as to protrude upward. As shown in FIG. 4A, when the hook member 34 engages with the engagement pin 22 to lock the lock member 36, the lock member 36 comes into contact with the hook member 34 and the lower portion of the lock member 36 is locked from the electric lock 24. The pin 24a is provided so as to project to lock the locked state.

Next, the operation of the conventional locking device having such a configuration will be described. As shown in FIG. 3, when entering the room from a state where the sliding door 1 is opened, the handle portion 1 is entered together with the entrance.
The sliding door 1 is closed by gripping d. At this time, sliding door 1
The engagement pin 22 and the electric lock 24 are in contact with the side end surface 1a of the first member 1 and are closed. As shown in FIG. 4A, the contact fitting 20
The abutment pin 22 provided on the hook member 34 comes into contact with the portion of the hook member 34 indicated by the arrow A, and a pressing force is applied in the direction of the arrow A. Hook member 34 pressed by this pressing force
Rotates about the A fulcrum 34a, and the engagement member 35 also rotates about the B fulcrum 35a. Further, since the lock member 36 is urged by the spring 39 so as to protrude upward, it always comes into contact with the lower portion of the hook member 34 and slides up and down.

As shown in FIG. 4 (b), when the sliding door is closed and the engaging pin 22 pushes the hook member 34, the hook member 34 and the engaging member 35 rotate and retreat into the case 32 and bend. Would. At this time, the hook member 34 and the engaging pin 22 automatically engage with the bending. In addition, when the sliding door is closed, the electric lock 24 operates and the lock pin 24a projects. As a result, the lock member 36 is fixed and the hook member 34 is also fixed, so that the sliding door is automatically locked.

To release the locking of the sliding door, the electronic key 24 is operated and the protruding lock pin 24a is returned into the electronic key 24. Thus, when the sliding door is opened, the hook member 34 is disengaged from the engagement pin 22 and returns to the state shown in FIG. As described above, in the conventional locking device, when the sliding door is closed, the hook member is automatically engaged with the engaging pin and locked, and the locking is locked by the electric lock, thereby realizing a smooth opening and closing operation of the sliding door.

[0009]

However, the conventional locking device has a problem in that the number of components is increased due to its complicated structure and operation when locking the sliding door. In addition, when the number of components increases, a plurality of processes are required in the manufacturing process, and the production efficiency is reduced. Furthermore, the cost of the product increases as the production efficiency decreases and the number of parts increases, so that it is impossible to expect a product with high cost performance. The present invention solves the above-mentioned problems of the prior art,
It is an object of the present invention to provide a low-cost locking device which can improve the complicated structure of the locking device, reduce the number of parts, can be easily manufactured, and can securely lock.

[0010]

In order to solve the above-mentioned problems, the present invention provides a case member mounted on a side end face of a movable body for closing an opening, and a contact member protruding from the side end face of the movable body. A hook portion that projects and locks when the contact portion retreats due to the closing of the movable body, and a main body member rotatably connected to the case member is provided, and the contact portion is provided from the side end surface of the movable body. The main body member is urged so that the urging direction can be switched between the direction in which the contact portion protrudes and the direction in which the hook portion protrudes. The urging fixed portion provided on the case member and the urging movable portion provided on the main body member. An urging member to be mounted is provided.

Here, the urging member has one end connected to the urging fixing portion,
The other end is attached to the biasing movable portion, and when the contact portion protrudes, the biasing portion is biased in a direction in which the contact portion protrudes. With the rotation of the contact portion, the biasing movable portion is biased and fixed. It is provided so that the bias can be switched in a direction in which the hook portion is protruded by exceeding a line connecting the rotation axis of the main body member and the main body member. Further, the main body member is formed in a substantially “L” shape, a hook portion is provided at one end, and a contact portion having a substantially arc-shaped end portion is provided at the other end.
A rotating shaft is provided at the bent right-angled portion of the character, and the abutting portion abuts on the opening to rotate so that the hook portion protrudes and is automatically locked. In addition, the movable body is provided with a concave grip portion for opening and closing, and a release portion capable of unlocking the hook portion is provided in the concave portion of the grip portion.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a locking device according to the present invention will be described in detail with reference to the accompanying drawings. FIG.
1 is a perspective view showing an embodiment when a locking device according to the present invention is applied to a sliding door. As shown in FIG. 2, a locking device 80 according to the present invention mounted on a sliding door is provided with a sliding door 50 that slides at an entrance 70 in a room or the like, and is mounted on a side end surface 50 a of the sliding door 50. The sliding door 50 is slidably mounted in contact with a threshold 70a of the entrance 70 and an upper gate (not shown) facing the threshold 70a.
An opening 50b is provided substantially at the center of the side end surface 50a of the rectangular sliding door 50 having a thickness.
Inside, a locking device 80 is mounted. In the vicinity of the opening 50b of the sliding door 50, there is provided a concave gripping portion 60 which can grip the door tip and can be opened and closed manually to slide the sliding door 50. In this manner, the sliding door 50 is moved from the open state to
, And the side end surface 50a is brought into contact with the end portion 70b of the entrance 70 to close it, thereby automatically locking. In addition, the sliding door 50 is inserted into the concave portion of the grip portion 60 from the room.
A release member 62 is provided which can release the locked state of the locking device 80 when the door is opened.

FIG. 1 is a sectional view showing the internal structure and operation of the locking device 80 according to the present invention shown in FIG.
1A shows a state before locking, FIG. 1B shows a state during locking, and FIG. 1C shows a state after locking. As shown in FIG. 1, in the opening 50b of the sliding door, a locking device 80 is screwed and fixed to the mounting portion 80a. This locking device 80 is provided with a rectangular case 88,
A hook member 82 rotatably pivoted is provided substantially at the center of the case 88. A coil spring 84 is attached to one end of the hook member 82 and is urged.

The hook member 82 has a substantially "L" shape, and has a hook 82d at one end for locking a sliding door and a contact portion 82a having an arcuate curved surface at the other end. Have been. A rotation shaft 82b is provided at the center of a right-angled portion of the hook member 82 that is bent in a substantially “L” shape.
The rotating shaft 82b is rotatably mounted on the case 88. Further, a coil spring 84 is attached to the hook member 82 in such a manner that the coil member 84 has a substantially “U” shape and both ends are urged outward with respect to the turning operation of the hook member 82. This coil spring 84
A protruding spring mounting portion 82c is provided protruding in the vicinity of a rotation shaft 82b provided on the hook member 82.
Is mounted so as to pivotally support one end. The other end of the coil spring 84 is mounted on a convex spring stopper 88 a provided at a lower portion of the case 88.

The case 88 has a cutout formed in a side portion thereof, and the cutout is provided with a convex portion 62a integrally formed with the release member 62 shown in FIG. A slider 86 that is engaged with the protrusion 62a and slides in conjunction with the protrusion 62a is attached to the protrusion 62a. Slider 86
Are engaged with a fulcrum 82e provided on the hook member 82. Therefore, when the release member 62 shown in FIG. 2 slides, the protrusion 62a slides, and the slider 86 slides accordingly. When the slider 86 is slid, the fulcrum 82e is linked to rotate the hook member 82. At the end 70b of the entrance, an engaging portion 70d is provided in which the hook 82d of the hook member 82 rotates and engages.

Next, the operation of the embodiment in which the locking device according to the present invention is mounted on a sliding door will be described in detail. As shown in FIG. 1 (a), when the sliding door is opened,
Abutment portion 82a is located so as to protrude from the side end surface 50a of the sliding door. The hook 82d is connected to the contact portion 82a.
, And is housed in the case 88. At this time, the spring mounting portion 82c to which one end of the coil spring 84 is mounted is connected to the spring stopper 88a and the hook member 82.
1 (a), which is a line connecting the rotary shaft 82b of FIG.
The hook member 82 is urged to rotate in the direction of arrow A. When entering the room from such a state and closing the sliding door, as shown in FIG. 2, the gripping portion 60 of the sliding door 50 is gripped and slid in the direction of the end 70b to close.

As shown in FIG. 1B, the side end face 5 of the sliding door
0a in the direction of the end 70b, the hook member 8
The second contact portion 82a contacts the end 70b. When the contact portion 82a contacts the end portion 70b in this manner, the contact portion 82a
Is pushed along the arc-shaped surface, and the hook member 82 is
2b. At this time, the spring mounting portion 82c to which one end of the coil spring 84 is mounted is a line connecting the spring stopper 88a and the rotation shaft 82b of the hook member 82 in FIG.
It moves upward beyond the dashed-dotted line G shown in (b). When the spring mounting portion 82c moves upward with respect to the one-dot chain line G, the biasing direction of the coil spring 84 is switched and the hook member 82 is rotated in the direction shown by the arrow B. As shown in FIG. 1C, when the hook member 82 is rotated in the direction of arrow B by the urging of the coil spring 84, the contact portion 82a is retracted and stored in the case 88, and the hook 82d is pivotally protruded from the upper portion. . As a result, the hook 82d is moved to the end 70 of the doorway.
b and is locked by being engaged with the engaging portion 70d provided in b. In this way, after entering the room, the sliding door is closed, so that the hook member 82 is rotated and automatically locked.

When leaving the room, the locking device 8
0, in order to release the locked state, as shown in FIG. 2, the gripper 60 of the sliding door 50 is slid in the opening direction and the release member 62 provided in the gripper 60 is moved in the direction of arrow D as shown in FIG. To slide. Thereby, as shown in FIG. 1 (C), the convex portion 62a slides in the direction of arrow D, and the slider 86 simultaneously interlocks and slides in the direction of arrow D. Further, the fulcrum 82e of the hook member 82 engaged with the slider 86
Also interlock and slide. Therefore, the hook 8 of the hook member 82
2d rotates in the upward direction shown by the arrow E, and can return to the state before locking shown in FIG.

Although the embodiment of the locking device according to the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and can be changed without departing from the gist thereof. . For example, although the embodiment in which the locking device according to the present invention is applied to a sliding door has been described, the mounting portion of the locking device according to the present invention is not limited to the sliding door,
It can be attached to a folding door, a shutter, etc. In addition, the coil spring in which the urging of the hook member is urged outward in a substantially U-shape and both ends are urged outwardly has been described in the embodiment, but the coil spring of the locking device according to the present invention is substantially The present invention is not limited to the coil spring. For example, a cylindrical coil spring formed in a spiral shape and having both ends biased outward may be mounted.

[0020]

As described above, according to the locking device of the present invention,
Since the structure of the locking device for locking the sliding door is simplified and the operation is simple, the number of components can be reduced. Also, by reducing the number of parts, the number of steps in manufacturing is reduced and the manufacturing method is simplified, so that production efficiency can be improved. Further, since the production cost is reduced as the production efficiency is improved and the number of parts is reduced, a product with high cost performance can be expected.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the internal structure and operation of a locking device 80 according to the present invention shown in FIG.

FIG. 2 is a perspective view showing an embodiment in which the locking device according to the present invention is applied to a sliding door.

FIG. 3 is a perspective view showing a state in which a conventional locking device is mounted on a sliding door.

FIG. 4 is a sectional view showing the operation of the conventional locking device shown in FIG.

[Explanation of symbols]

 Reference Signs List 50 sliding door 50a side end face 50b opening 60 gripping part 62 release member 62a convex part 70 entrance 70a threshold 70b end 70d engaging part 80 locking device 80a mounting part 82 hook member 82a contact part 82b rotating shaft 82c spring mounting part 82d Hook 82e Support point 84 Coil spring 86 Slider 88 Case 88a Spring stopper

Claims (4)

[Claims] 1. A locking device that is mounted on a movable body that closes an opening and locks in accordance with the closing of the movable body, a case member that is mounted on a side end surface of the movable body, and that protrudes from a side end surface of the movable body. A contact portion, a hook portion that projects and locks when the contact portion retreats due to the closure of the movable body, and a body member that is rotatably pivotally attached to the case member; The main body member is biased so that the biasing direction can be switched between a direction in which the contact portion protrudes from the side end surface of the movable body and a direction in which the hook portion protrudes, and a bias provided on the case member. A locking device comprising: a biasing member mounted on a fixed portion and a biasing movable portion provided on the main body member. 2. The locking device according to claim 1, wherein one end of the urging member is attached to the urging fixed part and the other end is attached to the urging movable part, and the urging member is brought into contact with the urging member when the abutting part protrudes. Urging in the direction to protrude the part, with the retreat of the contact part rotating,
A locking device, wherein the urging movable part switches the urging in a direction in which the hook part protrudes when the urging movable part crosses a line connecting the urging fixed part and the rotation axis of the main body member. 3. The locking device according to claim 1, wherein the main body member has a contact portion formed in a substantially “L” shape, having a hook portion at one end and a substantially arc-shaped end portion at the other end. Provided,
A rotating shaft is provided at the substantially right-angled bent right-angled portion, and the abutting portion abuts on the opening to rotate, so that the hook portion rotates and protrudes and is automatically locked. Locking device. 4. The locking device according to claim 1, wherein the movable body has a concave grip portion for opening and closing, and a release portion capable of unlocking the hook portion is provided in a concave portion of the grip portion. A locking device.