JPH038772Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a door or lid opening/closing device for a box body.
This simplifies assembly and ensures reliable operation.

When pushed through the door or lid, the movable body is locked into the case, causing the door or lid to remain closed, and when pushed again, said lock is released and part of the movable body is pushed into the case. 2. Description of the Related Art Various structures of opening/closing devices such as doors having a push-latch mechanism that protrudes outward to open a door or a lid are already known. One example of this is the one disclosed in Japanese Utility Model Publication No. 53-37999, in which a bent part formed at one end of an operating pin made of metal wire is inserted into an endless groove, and the metal wire locks the movable body. However, since the lock pin is attached to the movable body by inserting the bent piece at the opposite end to the bent part into a hole in a part of the case, assembly is relatively troublesome. I have this problem.

In addition, a member corresponding to the metal wire was made of synthetic resin to simplify assembly.
As disclosed in Japanese Patent No. 103370, this elastic rod is formed integrally with the proximal end of the latch rod, and locks and releases by elastic deformation of the elastic rod. It has the disadvantage that it may pass through the locking part due to its elasticity and cannot be locked.

The present invention solves the above-mentioned problem, and includes a movable body 3 that is slidably inserted in the inner and outer directions of the case 2 with one end open and is biased outwardly of the case 2 by a spring 5. , magnetic metal plates 6 are provided on both sides of the movable body 3, and the magnetic metal plates 6 are arranged in a direction perpendicular to the direction in which the movable body 3 slides inside the case 2 and in a direction perpendicular to the direction in which the movable body 3 slides inside the case 2. A magnet 7 having a locking protrusion 8 facing outward.
A locking recess 9 is provided on the inner surface of the case 2 at a position corresponding to the locking protrusion 8 to lock the magnet 7 to the case 2, and the magnet 7 is attached to the magnet 7. On the inner surface of the case 2 opposite to the locking protrusion 8 attached to the magnet 7, there is a guide groove 15 having endless locking portions 16 and 17 bent in a chevron shape at both ends in the sliding direction of the movable body 5.
A lock bar 11 is provided so as to face the guide groove 15 and to be able to slide on the magnet 7 in the sliding direction of the movable body 3, and one end of the lock bar 11 is on the side opposite to the guide groove 15. It consists of an engagement piece 13 which is slidably stacked on the magnet 7 and has a substantially triangular shape when viewed from the sliding direction of the movable body 3, and the other end is disposed within the guide groove 15 at the tip. An engaging pin 14 is provided for insertion into the
The distal end face faces the groove bottom of the guide groove 15, and the opposite side of the distal end face is supported toward the groove bottom by a receiving plate 12 made of a leaf spring provided between opposing sides of the movable body 3. , a pair of support protrusions 10, in which the engaging piece 13 of the lock bar 11 is arranged in a direction perpendicular to the sliding direction of the movable body 3 and toward the longitudinal center line of the case 2, and the magnetic metal plate 6. The gist is that it is fitted into a recess formed between the two.

To explain the switchgear of the present invention with reference to the embodiment shown in the drawings, reference numeral 1 denotes a switchgear, which is opened at one end,
and a case 2 that can be attached to a box body etc.
The movable body 3 is housed inside the movable body 3 and is slidable in the inward and outward directions thereof, and is composed of a frame-shaped movable body 3 and a cover plate 4 that penetrate through the movable body 3 in a direction perpendicular to the sliding direction. The movable body 3 and the cover plate 4 are made of a non-magnetic material such as synthetic resin. 5 is a spring interposed between the side wall of the case 2 and one end of the movable body 3 in order to bias the movable body 3 outside the case 2;
Reference numeral 6 denotes a magnetic metal plate superimposed on both sides of the movable body 3 in the penetrating direction, and the protrusion at one end of these plates is engaged with or adhered to a recess around the movable body 3, so that the movable body It is designed to slide at the same time as 3.

A magnet 7 is fitted into the movable body 3 between the magnetic metal plates 6, 6, and its rear end protrudes from the metal plate 6, and the movable body 3 is attached to the end of the magnet.
A locking protrusion 8 provided to protrude from the surface of the
The magnet 7 is movably attached to the case 2 by being locked in a locking recess 9 formed on the inner surface of the case 2. That is, when the movable body 3 is almost entirely inserted into the case 2, the magnetic metal plate 6 largely overlaps the magnet 7, but when the movable body 3 protrudes outside the case 2, the magnetic metal plate 6 overlaps the magnet 7.
separates from the magnet 7, and their overlap becomes smaller or disappears. On the inner surface of the case 2 opposite to the movable body 3 and opposite to the locking protrusion 8 attached to the magnet 7, there is an endless locking part 16 bent into a chevron shape at both ends in the sliding direction of the movable body 5.
and 17 are provided, and the guide groove 1
A lock bar 11 is provided opposite to the magnet 7 and slidable on the magnet 7 in the sliding direction of the movable body 3, and one end of the lock bar 11 faces the guide groove 15 and the surface opposite to the magnet 7. It consists of an engagement piece 13 that is slidably stacked on the top and has a substantially triangular shape when viewed at right angles from the sliding direction of the movable body 3, and the other end has an engagement piece 13 at the tip for insertion into the guide groove 15. A dowel pin 14 is provided, and the distal end surface of the engagement pin 14 faces the groove bottom of the guide groove 15, and the opposite surface side of the distal end surface is made of a plate spring provided between opposing sides of the movable body 3. Receiving plate 1
2, and the engaging piece 13 of the lock bar 11 is arranged in a direction perpendicular to the sliding direction of the movable body 3 and toward the longitudinal center line of the case 2. The support protrusion 10 and the magnetic metal plate 6 are fitted into a recess formed between the support protrusion 10 and the magnetic metal plate 6.

Reference numeral 15 denotes an endless guide groove formed on the surface of the cover plate 4 facing the movable body 3, which is long in the sliding direction of the movable body 3 and has a length approximately equal to the sliding length of the movable body 3; The case 2 has chevron-shaped locking portions 16 and 17 on the back side and the mouth side end portions that protrude toward the mouth side of the case 2, into which the engagement pin 14 is inserted. And the guide groove 15
is the depth of the engaging pin 1 that moves within it.
4, the locking portions 16 and 17 are deeper at each portion of the locking portions 16 and 17 and at each preceding stage thereof, and a step is formed at the boundary between the locking portions 16 and 17. The direction of movement is restricted to a certain direction. In the figure, A is the shallow part and B is the deep part. 1
Reference numeral 8 designates an adsorption plate made of iron material fixed to the inner surface of the door, 19 a box body, and 20 a door.

In this embodiment, the magnet 7 is fixed to the case 2 by its locking protrusion 8 in order to naturally separate the attracted plate 18 from the magnetic metal plate 6 when the door is opened. The engagement piece 13 of the lock bar 11 is
Although it is fitted into the recess formed by the support protrusion 10 and the metal plate 6, it is also possible to use a part of the movable body 3 in place of the metal plate 6. In the receiving plate 12 made of a leaf spring, the guide grooves 15 have different depths, and this is to enable the engagement pin 14 to move in its axial direction. This can be done arbitrarily depending on the configuration of .

As shown in FIG. 7, this opening/closing device is constructed by fixing the opening/closing device 1 to the inside of the opening of a box body, the opening side of the case 2 to the outside of the box, and attaching the suction plate 18 to the inner surface of the door. The movable body 3 is fixed at a position facing the movable body 3. Then, when the door is closed and the movable body 3 is sufficiently inserted into the case 2 through the door and then released, the magnetic metal plate 6 overlaps the magnet 7, so that the magnetic metal plate 6 is connected to the attracted plate 18 through the magnetic metal plate 6. The door is fixed by the magnetic force of the magnet 7, while the engaging pin 14 of the lock bar 11 is engaged with the engaging part 16 of the guide groove 15 as shown in FIG. When locked, the door remains closed.

When opening the door, that is, releasing the lock on the movable body 3, when the door is pushed and then released, the movable body 3
The lock is released, and the door protrudes outside the case 2 as shown in Figure 4, separating the door from the box body slightly. At the same time, the overlapping area between the magnetic metal plate 6 and the magnet 7 becomes considerably small, and the magnetic The magnetic force of the metal plate 6 becomes weaker, and the door separates from the metal plate 6. In this way, the door that is opened and released from the metal plate 6 is opened manually.

The movable body 3 is locked and released by moving the engagement pin 14 of the lock bar 11 within the guide groove 15. As shown by the broken line in FIG. 5, when the engagement pin 14 is engaged with the locking portion 16 and the movable body 3 is locked, the movable body 3 is moved through the door.
When pushed into the case 2, the engagement pin 14 moves back along the guide groove 15 as shown by the arrow, and the lock is released and stopped. When the door is released here, the engagement pin 14 moves forward, is supported by the locking part 17, and stops. That is, the actuating body 3 protrudes and opens the door.

When closing the door, that is, when locking the actuating body 3, the actuating body 3 is fully pushed through the door and then the door is released. Then, due to the step at the bottom of the guide groove 15, the engagement pin 14 advances toward the center of the guide groove 15 and is engaged with the locking portion 16, thereby locking the actuating body 3.

In this way, the lock bar 11 moves in a fixed direction within the endless guide groove 15, and the lock bar 11 swings in the width direction of the movable body 3 during locking and releasing. Although no problem occurs when the lock is released, it is necessary to ensure that the engagement pin 14 is stopped by the locking portion 16 when the lock is locked. In the present invention, a triangular engagement piece 13 formed at one end of a lock bar 11 is fitted into a recess formed by a magnetic metal plate 6 and supporting protrusions 10, 10. Therefore, the swing of the lock bar 11 in the direction away from the locking portion 16 is caused by the engagement piece 13
This is done in the gap between the lock bar 11 and the support protrusion 10, and almost no elastic deformation of the lock bar 11 made of synthetic resin or metal wire occurs. The reaction force of the lock bar 11 is extremely small, and the movable body 3 can be reliably locked by stopping the engagement pin 14 at the locking portion 16. That is, lock bar 1
This solves the problem that when the end portion of the pin 1 is fixed, the engagement pin 14 may pass through the locking portion 16 due to the reaction force caused by its elastic deformation, and locking may not be possible.

In assembly, the lock bar 11 can be easily and efficiently assembled by simply fitting the engaging piece 13 into the recess formed on the surface of the movable body 3 facing the cover plate 4 and stacking it on the movable body 3. I can do it.

In addition, by attaching the magnet 7 to the case 2, when the door 20 is opened, the object 18 to be attracted from the movable body 3 quickly moves away from the magnetic field of the magnet 7, thereby achieving reliable opening of the door 20. On the other hand, when closing the door 20, the magnetic field of the magnet 7 increases the attraction force as it approaches the object to be attracted 18, and when the engaging pin 14 is locked with the locking part 16, the door 20 is securely closed. This has the effect of making possible locking.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Figure 1 is a front view;
Figure 2 is a plan view with the lid removed, Figure 3 is a sectional view when the lid is locked, Figure 4 is a sectional view when the lock is released, Figure 5 is a bottom view of the lid, and Figure 6 is a sectional view when the lid is unlocked. FIG. 3 is a side view of the device in use. DESCRIPTION OF SYMBOLS 1... Opening/closing device, 2... Case, 3... Operating body, 4... Lid plate, 5... Spring, 6... Magnetic metal plate, 7... Magnet, 8... Locking protrusion, 9... …
Locking recess, 10... Support protrusion, 11... Lock bar, 12... Reception plate, 13... Engagement piece, 14... Engagement pin, 15... Guide groove, 16, 17... Locking portion .

Claims (1)

[Scope of utility model registration request] A movable body 3 is inserted into a case 2 whose one end is open so as to be slidable in the inner and outer directions of the case 2, and is biased outwardly from the case 2 by a spring 5. and provide a magnetic metal plate 6,
The movable body 3 is held between the magnetic metal plates 6 by a magnet 7 having a locking protrusion 8 provided in a direction perpendicular to the direction in which the movable body 3 slides inside the case 2 and facing outward of the case 2. A locking recess 9 is provided on the inner surface of the case 2 at a position corresponding to the protrusion 8 to lock the magnet 7 to the case 2 to attach the magnet 7.
An endless guide groove 15 having locking parts 16 and 17 bent in a chevron shape is provided on the inner surface of the case 2 on the opposite side to the locking protrusion 8 attached to the movable body 5 at both ends in the sliding direction of the movable body 5. The magnet 7 faces the guide groove 15 and in the sliding direction of the movable body 3.
A lock bar 11 is provided so as to be slidable on the magnet 7, and one end of the lock bar 11 is stacked on the magnet 7 so that the surface opposite to the guide groove 15 is slidable on the movable body 3. The engagement piece 13 has a substantially triangular shape when viewed from the sliding direction at right angles, and the other end is provided with an engagement pin 14 at the tip for insertion into the guide groove 15. The distal end face faces the groove bottom of the guide groove 15, and the opposite side of the distal end face is supported toward the groove bottom by a receiving plate 12 made of a leaf spring provided between opposing sides of the movable body 3, Between the magnetic metal plate 6 and a pair of support protrusions 10 in which the engaging piece 13 of the lock bar 11 is arranged perpendicularly to the sliding direction of the movable body 3 and toward the longitudinal centerline of the case 2. An opening/closing device for a door or the like, characterized in that it is fitted into a recess formed in a recess.