JPH0313680A - Lock structure for door - Google Patents

Abstract

PURPOSE:To facilitate operations by providing a guide face directly below a claw section, slidably supporting a movable angular shaft serving as a pressing operation section at on end on a casing side wall with the axial direction kept in parallel with the rotating axis of a door, and providing a hooking tool coupled with the claw section. CONSTITUTION:When a door 1b is closed and pressed, the tip section of a hooking tool 6 collides with the inclined face 2a-1 of the claw section 2a of a movable angular shaft 2. A compression coil spring 4 fitted to the angular shaft 2 is compressed by a component force in the axial direction of the movable angular shaft 2, the angular shaft 2 is slid in the axial direction, and the claw section 2a is released from the inclined face 2a-1 and repulsion-coupled with the hooking tool 6.

Description

[Detailed Description of the Invention] [Summary] Regarding the door lock structure, the door can be opened, closed and locked in one operation,
In order to improve the appearance of the device, a bearing bracket with a square shaft hole is fixed to the side wall of the housing opening on one axis of both bent pieces bent in a U-shape. A movable angular shaft having a hook-shaped claw with an inclined surface at one end, a pressing operation part on the other end, and an oblique guide surface on the notch directly below the claw is the pivot axis of the door. one end is in contact with the inner surface of one of the bending pieces, and the other end is received by a spring receiver fixed to the movable angle shaft between the bending pieces. A compression coil spring is inserted to bias the pressing operation part, and a hook that engages with the claw part is protruded from the inner surface of the door, which is rotatably supported by the housing so that it can be opened in one direction. By closing and pushing the hook, the hook is automatically repulsively engaged with the claw, and by pushing the press operation part of the movable angle shaft in the axial direction, the hook is removed from the claw and at the same time the guide surface is slid to open the door. Configured to Push Out in the Opening Direction [Field of Industrial Application] The present invention relates to a locking structure for a door.

The housing of electronic and communication equipment houses the electronic circuit puff cage,
It has an opening for taking things in and out, and a door that closes the opening is rotatably supported by a hinge.

When opening and closing the door, there is a need for a door locking structure that can open, close, and lock the door at the same time with a simple operation.

[Conventional technology]

Conventionally, as shown in a perspective view of main parts in FIG. 5, a door 12 that closes the opening of a housing 11 is rotatably supported at the lower part by a hinge 12a, and is opened and closed by being pulled forward. Door 12 has handle 1
3 and the hook have gold 14.

[Problem to be solved by the invention]

However, according to the above-mentioned structure, the opening/closing operation and the locking operation are separate, and when opening/closing the door, two
There are problems in that it requires two operations, which is cumbersome, and that the operation side is on the front side, which spoils the appearance of the device.

In view of the above-mentioned problems, the present invention allows the opening/closing and locking of the door to be performed in one step.
To provide a door lock structure that can be performed with a single operation and that can improve the appearance of the device.

[Means to solve the problem]

In order to achieve the above object, in the door lock structure of the present invention, a bearing bracket having a square shaft hole on one axis of both bent pieces formed in a U-shape is fixed to the side wall of the housing opening. a movable angular shaft provided in the square shaft hole with a claw portion having a hook-shaped tip and an inclined surface at one end, the other end surface being a pressing operation portion, and further having an oblique guide surface on a notched side surface directly below the claw portion; is slidably supported parallel to the rotation axis of the door, one end of which is in contact with the inner surface of one of the bent pieces, and the other end is fixed to the movable angle shaft between the folded pieces. Insert a compression coil spring that is received by a provided spring receiver and biased toward the pressing operation portion, and a hook that engages with the claw portion on the inner surface of the door that is rotatably supported by the housing so that it can be opened in one direction. By closing and pushing the door, the hook is automatically repulsively engaged with the claw, and at the same time, by pushing the pressing operation part of the movable angle shaft in the axial direction, the hook is removed from the claw. It is configured to slide the guide surface and push the door in the opening direction.

[Effect]

The housing is equipped with a claw part with an inclined surface at one end, a guide surface directly below the claw part, and a movable angular shaft with the other end serving as a press operation part that can be slid and whose axial direction is parallel to the rotation axis of the door. By equipping the door with a hook that is pivotally supported on the side wall and engages with the claw, when the door is closed and pushed, the end face of the hook collides with the inclined surface provided at the tip of the claw, and the axial portion of the hook is By compressing the compression coil and spring by force and sliding the movable angular shaft in the axial direction, the claw portion can be automatically repulsively engaged with the hook by sliding off the slope. In addition, by pushing the pressing operation part of the movable angle shaft in the axial direction, the hook is removed from the claw part, and at the same time, the other end surface of the hook is brought into contact with the guide surface of the claw part, and the component force perpendicular to the axial direction is applied to the door. can be pushed out in the opening direction.

〔Example〕

The gist of the present invention will be explained in detail below based on embodiments shown in the drawings.

Figure 1 is a perspective view of the door with the door open, Figure 2 is an enlarged plan view of the main part with the door closed, including a partial cutaway, and Figure 3 is a front view taken along arrow A-A in Figure 2. be.

As shown in the figure, the housing 1 includes a movable angular shaft 2, a bearing bracket 3 that supports the movable angular shaft 2 so as to be slidable in the axial direction, and a compression coil spring 4 that biases the movable angular shaft 2 in the axial direction. .

The bearing bracket 3 has a square shaft hole 3c formed on one axis of both bent pieces 3a and 3b formed by bending a sheet metal into a U-shape, and a mounting leg 3d extending in a gate shape from one bent piece 3a. It is welded and fixed to the inner surface of the side wall 1a of the opening of the housing 1.

The movable angular shaft 2 is made of a square metal rod, and has a claw portion 2a bent into a hook shape at one end, a pressing operation portion 2b (covered with a camp in the figure for ease of operation) at the other end, and a claw portion. 2
An inclined surface 2a-1 is provided at the tip of a.

The movable angle shaft 2 is a press operation part (cap 7') 2b is attached to the housing l.
It is inserted through the square hole 1a-1 made in the side wall 1a of the bearing bracket 3, and is pushed with a finger so that it can slide into the square shaft hole 3c of the bearing bracket 3 and in the sliding direction, that is, the axis of the movable square shaft 2. the door 1
It is loosely supported in parallel to the rotation axis of b.

Moreover, the direction of inclination of the inclined surface 2a-1 of the claw portion 2a is such that when one end surface of the intermediate connecting portion 6c of the hooking tool 6, which will be described later, collides with the inclined surface 2a-1, they will slide against each other and cause a component force in the axial direction. This allows the movable angular shaft 2 to slide in the axial direction.

Also, a notch 2c just below the claw part 2a (forms a hook shape)
A guide surface 2c whose side surface is inclined with respect to the axis and which is in contact with the other end surface (opposite end surface) of the intermediate connecting portion 6c of the hook 6, which will be described later.
Let it be m1. The direction of inclination of this guide surface 2 cm 1 is such that when the other end surface (opposite end surface) of the intermediate connecting portion 6c comes into contact with each other, they slide against each other and push the door 1b in the opening direction by a component force perpendicular to the axial direction.

The sliding portion of the movable angular shaft 2 with the angular shaft hole 3c has a rectangular cross section, and is prevented from rotating, thereby regulating the direction of the claw portion 2a in the front direction. Inclination angle θ of inclined surface 2a-1 and guide surface 2cm1
1. θ2 is 55″ to 55″ in the axial direction so that they can easily slide against each other.
It is desirable that the angle be 60° and 35″ to 30＠.

The compression coil spring 4 is inserted into the movable angular shaft 2 between the angular shaft holes 3c, one end of the bearing surface abuts the inner surface of the bent piece 3b of the bearing bracket 3, and the other end of the bearing surface is fixed to the movable angular shaft 2. Spring retainer 5
, that is, the movable angular shaft 2 is received by a retaining ring fitted in the circumferential groove 2d.
is urged toward the pressing operation section 2b.

The door 1b is rotatably supported by a hinge 1b-1 so that the opening of the housing 1 is closed and the door 1b is pulled forward in the direction of arrow C to open on one side. On the inner surface of the door 1b, there is a hook 6 (the third one shown in FIG.
Refer to the sectional view taken along arrow B-B in the figure (however, the movable angle axis is the path shown)
) is projected and fixed by welding so as to engage with the claw portion 2a of the movable angular shaft 2. Intermediate connection portion 6c between both bent pieces 6a and 6b
Since the outer edges of both end faces frictionally slide with the inclined surface 2a-1 and the guide surface 2 cm1 of the movable angle shaft 2, they are chamfered 6 cm1 to facilitate sliding.

With this configuration, when the door is closed and pushed, the tip of the hook, that is, one end surface of the intermediate connection part, collides with the inclined surface of the claw of the movable angle shaft, and the axial direction of the movable angle shaft The compression coil spring inserted into the movable angle shaft is compressed by the force of can be repulsively engaged.

In addition, by pushing the pressing operation part of the movable angle shaft in the axial direction, the hook is removed from the claw part, and at the same time, the other end surface (opposite end surface) of the intermediate connection part of the hook is brought into contact with the guide surface of the movable angle shaft. The door can be pushed out in the opening direction by a force component perpendicular to the axial direction.

In this way, by closing and pushing the door, the hook can be engaged with the claw part and locked, and by pushing the pressing operation part of the movable angle shaft, the hook can be removed from the claw part and at the same time the movable angle shaft can be locked. The guide surface allows the door to be opened by pushing it in the direction of opening. These opening and closing operations are one-touch operations, and the door can be simply opened and closed.

〔Effect of the invention〕

As described in detail above, according to the present invention, the door opening/closing operation and locking operation can be performed with one-touch operation, improving operability and maintainability.Furthermore, by not providing the operation part on the front side, the appearance of the device is improved. It exhibits an extremely useful effect industrially, such as being able to make it beautiful in terms of design.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention with the door open; Fig. 2 is an enlarged plan view of the main part with the door closed; and Fig. 3 is A of Fig. 2. 4 is a sectional view taken along line B-B in FIG. 3, and FIG. 5 is a perspective view of a main part according to the prior art. In the figure, l is a housing, 1a is a side wall, tb is a door, 2 is a movable angle shaft, 2a is a claw part, 2a-1 is an inclined surface, 2b is a pressing operation part, and 6 is a hook. 2c is a notch, 2cm1 is a guide surface, 3 is a bearing bracket, 3a and 3b are bent pieces, 3c is a square shaft hole, 4 is a compression coil spring, and 5 is a spring receiver (retainer) An embodiment of the present invention Perspective view 81 with the door open

Claims (1)

[Claims] A bearing bracket (3) with a square shaft hole (3c) on one axis of both bent pieces (3a, 3b) bent in a U-shape is fixed to the side wall (1a) of the opening of the housing (1). and the square shaft hole (3
c) has a claw part (2a) bent in a hook shape and having an inclined surface (2a-1) at one end, and the other end face is a pressing operation part (2b).
) and the movable angle shaft (2), which has a notch (2c) directly below the claw part (2a) and a diagonal guide surface (2c-1) on the side surface, is attached to the door (
1b) so as to be slidably supported parallel to the rotation axis of the bent piece (3a, 3b), and one end is attached to the inner surface of one of the bent pieces (3b) on the movable angle shaft (2) between the bent pieces (3a, 3b). the other end is the movable angle shaft (2
) is inserted with a compression coil spring (4) that is received by a spring receiver (5) fixed to the housing and biased toward the pressing operation part (2b), and is rotatably supported in the housing (1) so as to be able to open on one side. A hook (2a) that engages with the claw (2a) is provided on the inner surface of the door (1b).
6) is provided protrudingly, and when the door (1b) is closed and pushed, the hook (6) is automatically repulsively engaged with the claw part (2a), and the pressing operation part of the movable angular shaft (2) is (2b) in the axial direction to remove the hook (6) from the claw (2a) and at the same time slide the guide surface (2c-1) to push the door (1b) in the opening direction. Door lock structure.