JP5016007B2 - Lock handle device for door with inner emergency opening mechanism - Google Patents

Description

  The present invention relates to a drawer lock operation type door lock handle device used for locking and opening / closing operations of a storage box or the like of various devices.

A front and back bearing cylinder is projected on the back side of the upper end of the fixed case that is fixed by fitting the back side into the door opening, and the main shaft can be rotated and immovably moved in the front and rear direction. A lock plate that engages and disengages from the receiving part on the storage box side is connected to the rear end of the main shaft, a joint boss is projected from the front end of the main shaft, and the joint boss is crossed parallel to the door. Patent Document 1 discloses a drawer rotation operation type door lock handle device in which a base end portion of an operation handle is pivotally attached by a pivot, and the operation handle is raised in a fixed case and is rotatably stored. This conventional apparatus includes a handle holding mechanism for holding the operation handle in a state where it is immersed in the fixed case, a state where the operation handle is pulled out from the fixed case, and a state where the operation handle is rotated to the unlocked position.
On the other hand, it is a lock handle device used for the door of a walk-in type large storage box, and when a worker enters the storage box and performs work such as inspection and repair of equipment, others mistakenly Patent Document 2 discloses a door lock device including an emergency unlocking mechanism that can be unlocked from the inside of a storage box by itself and escaped from the storage box when the door is closed from the outside.

JP 2000-186440 A JP 2003-314114 A

In the lock handle device described in Patent Document 1, when the operation handle is laid down and immersed in the fixed case, the operation handle cannot be rotated even when it is not locked. For this reason, when the operator is inside the storage box, if the door is closed from the outside for some reason and the operation handle is in a fallen state, the operation handle is rotated by itself from the inside of the storage box. Cannot escape from.
On the other hand, the door lock device provided with the emergency unlocking mechanism described in Patent Document 2 has a relatively complicated structure and is expensive.
Accordingly, an object of the invention according to this application is to provide an inner emergency opening mechanism that can be applied to a drawer lock operation type door lock handle device and that is simple in structure and inexpensive.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the door lock handle device 1 with an inner emergency release mechanism of the invention according to this application is supported in the front-rear direction by a fixed case 2 fixed to the door 31 and an upper end portion of the fixed case 2. Main shaft 6, lock plate 7 fixed to the rear end portion of main shaft 6, operation handle 10 whose base end portion is pivotally attached to the front end portion of main shaft 6, and handle holding for holding operation handle 10 in a required position. A mechanism and an extrusion rod 12 provided so as to penetrate the lower part of the fixed case 2 in the front-rear direction are provided. The fixed case 2 has a housing recess 4 that receives the operation handle 10 in a lying state on the front surface side, and a bearing cylinder portion 5 in the front-rear direction protrudes from the back surface side of the upper end portion. The fixed case 2 is fixed to the door 31 by fitting the back side into the opening of the door 31. The main shaft 6 is fitted into the bearing tube portion 5 of the fixed case 2 so as to be rotatable between a locked position and an unlocked position and not movable in the front-rear direction. The lock plate 7 is fixed to the rear end portion of the main shaft 6 so as to extend to both sides in parallel with the door 31. Therefore, the lock plate 7 rotates between the lock position and the non-lock position together with the main shaft 6, engages with the receiving part on the storage box side directly or indirectly at the lock position, and disengages from the metal receiving part at the non-lock position. . The operation handle 10 is pivotally attached to the front end of the main shaft 6 by a transverse pivot 9 parallel to the door 31 and can stand upside down with respect to the fixed case 2. It is accepted that rotation operation is impossible. The handle holding mechanism holds the operation handle 10 in a state where the operation handle 10 is laid down in the storage recess 4 of the fixed case 2, a state where the operation handle 10 is raised from the fixed case 2, and a state where the operation handle 10 is rotated to the unlocked position. . The push rod 12 penetrates the lower portion of the fixed case 2 in the front-rear direction, the tip end portion 13 is located in the storage recess 4, and the rear portion 14 protrudes toward the back side of the fixed case 2. The push rod 12 is between an activation position where the distal end portion 13 pushes the operation handle 10 out of the storage recess 4 and is disposed at a rotatable position, and a non-activation position where the operation handle 10 is allowed to fall into the storage recess 4. It can be moved in the axial direction and is urged by the attachment spring 15 so that it is always in the non-actuated position.
The lock plate 7 can include an inner operation handle 16 for rotating the lock plate 7 from the inner side. The inner operation handle 16 extends in a direction orthogonal to the extension direction of the lock plate 7 in parallel with the door 31 via a pair of upright portions 17 rising from both edges at the center in the extension direction of the lock plate 7 to the back side. A pair of operation pieces 18 are provided.

  According to the invention according to this application, it is possible to provide a simple and inexpensive inner emergency opening mechanism that can be applied to a drawer rotation operation type door lock handle device.

It is a front view of the lock handle device for doors with an inside emergency release mechanism. It is sectional drawing of the lock state of the lock handle apparatus for doors with an inner side emergency release mechanism. It is sectional drawing of the pushing rod starting state of the lock handle device for doors with an inner side emergency release mechanism. It is a rear view of the lock handle device for doors with an inside emergency release mechanism. It is a disassembled perspective view of the lock handle device for doors with an inner side emergency release mechanism.

Embodiments of the present invention will be described with reference to the drawings.
The drawer rotation operation type door lock handle device 1 includes a fixed case 2 fixed to a door 31 (FIGS. 2 and 3) of a storage box. The fixed case 2 has a flange portion 3 that is in contact with the front surface of the door 31 and has a handle housing recess 4 that is open to the front surface side, and extends in the front-rear direction on the back side of the upper end portion and protrudes to the back side. The bearing cylinder portion 5 is provided.

  The main shaft 6 is inserted into the bearing tube portion 5 so as to be rotatable and immovable in the front-rear direction. A lock plate 7 is fixed to the rear end portion of the main shaft 4 so as to be engaged or disengaged directly or indirectly via a lock rod 19 (FIGS. 1 and 4) to a receiving portion (not shown) of the storage box. A proximal end portion of the operation handle 10 is pivotally attached to the joint boss portion 8 protruding from the front end portion of the main shaft 4 by a transverse pivot shaft 9 parallel to the door 31.

  The operation handle 10 stands between the lying position shown in FIG. 2 received in the storage recess 4 of the fixed case 1 and the standing position shown by the phantom line in FIG. It is free to fall. The handle 10 cannot be rotated at the position where the handle 10 has fallen into the storage recess 4 (FIG. 2). The handle 10 is held at each of the lying position and the standing position by a handle holding mechanism including the leaf spring 11.

  The push rod 12 penetrates the lower part of the fixed case 2 in the front-rear direction, is provided so as to be movable in the axial direction between the starting position and the non-starting position, and is prevented from coming off. The distal end portion 13 of the push rod 12 is located in the storage recess 4 at the non-actuated position shown in FIG. 2 and is not protruded therefrom, and projects forward from the storage recess 4 at the activation position shown in FIG. Placed in position. The rear portion 14 of the push rod 12 protrudes toward the back side of the fixed case, and is always biased to the non-starting position by the spring 15. The push rod 12 allows the operation handle 10 to fall into the storage recess 4 in the non-starting position, and pushes the operation handle 10 out of the storage recess 4 in the start position and arranges it at the rotatable position shown in FIG.

  The lock plate 7 includes an inner operation handle 16 for rotating the lock plate 7 from the inside. The inner operation handle 16 extends in a direction orthogonal to the extension direction of the lock plate 7 in parallel with the door 31 through a pair of upright portions 17 rising from both edges in the center in the extension direction of the lock plate 7 to the back side. A pair of operation pieces 18 are provided.

  The operator grips the operating handle 10 in the locked position raised to the standing position indicated by the phantom line in FIG. 3, and moves approximately 90 to the unlocked position indicated by the phantom line in FIG. 1 centering on the main shaft 6 supported by the bearing tube portion 5. When rotated, the lock plate 7 or the lock bar 19 connected to the lock plate 7 is detached from the receiving portion (not shown) of the storage box, the door 31 is unlocked with respect to the fixed frame 4, and the door 31 moves the operation handle 10. It is released by pulling forward. When the operating handle 10 rotates from the locked position to the unlocked position, the base end portion of the operating handle 10 is in sliding contact with the front surface of the leaf spring 11, and the rotational moment due to the elastic repulsive force of the leaf spring 11 causes the operating handle 10 to move. Acts in the direction of holding in an upright state.

  In general, while the worker enters the storage box and works, the door is opened, and the lock handle device 1 raises the operation handle 10 to the unlocked position. If the door is closed for some reason while the worker is in the storage box and the lock handle device 1 is locked, the worker opens the door by rotating the operation handle 10 by himself from the inside of the storage box. There must be. In this case, the operator pushes the rear end portion of the push rod 12 forward against the spring 15 to push the operation handle 10 out of the storage recess 4 and arranges it at the rotatable position shown in FIG. By grasping the inner operation handle 16 and rotating it to the unlocked position integrally with the lock plate 7, the door can be unlocked and the door can be opened.

DESCRIPTION OF SYMBOLS 1 Lock handle apparatus 2 Fixed case 3 Flange part 4 Storage recessed part 5 Bearing cylinder part 6 Main shaft 7 Lock board 8 Joining boss part 9 Transverse pivot 10 Operation handle 11 Leaf spring 12 Extrusion rod 13 Tip part 14 Rear part 15 Spring 16 Inner operation handle 17 Standing part 18 Operation piece 19 Lock bar 31 Door

Claims (1)

The front side has a storage recess that accepts the operation handle described below in a lying state, the front and back bearing cylinders protrude from the back side of the upper end, and the back side is fitted into the door opening and fixed to the door Case and
A main shaft fitted into the bearing tube portion of the fixed case so as to be rotatable between a locked position and an unlocked position and immovable in the front-rear direction;
It is fixed to the rear end of this main shaft so as to extend to both sides parallel to the door, and rotates between the lock position and the non-lock position together with the main shaft, and directly or indirectly engages the receiving part on the storage box side at the lock position. And a lock plate that is disengaged from the receiving part in the unlocked position;
A base end portion is pivotally attached to a front end portion of the main shaft by a transverse pivot parallel to the door, and can stand upside down with respect to the fixed case, and can be received in a housing recess of the fixed case so as not to rotate in the lying state. An operation handle;
A handle holding mechanism for holding the operation handle in a state where it is laid down in the storage recess of the fixed case, a state in which the operation handle is raised from the fixed case, and a state in which the operation handle is rotated to the unlocked position;
It has a front end portion that penetrates the lower portion of the fixed case in the front-rear direction and is located in the storage recess, and a rear end portion that protrudes toward the back side of the fixed case, and the front end pushes the operation handle out of the storage recess. It can be moved in the axial direction between the starting position that is placed in the rotatable position and the non-starting position that allows the operation handle to fall into the storage recess, and is always attached with an attached spring so that it is in the non-starting position. An extruded rod to be urged ,
Further, the lock plate has a pair of operation pieces extending in a direction orthogonal to the extension direction of the lock plate in parallel with the door through a pair of standing parts rising from both edges in the center of the extension direction to the back side. A door lock handle device with an inner emergency release mechanism , comprising an inner operation handle .

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