JPS6233890Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an opening/closing holding device for a lid, a door, or the like.

A push latch mechanism that locks when pressed and releases the lock and returns to its original position when pressed further, is fitted into this endless groove by an opening/closing holding device such as a door that utilizes a substantially heart-shaped endless groove. The pin is shaped like a crank,
This pin has the disadvantage that the entire device becomes long, and those that use a ball instead of this pin have the disadvantage that the operation lacks smoothness and malfunctions are likely to occur.

The purpose of this invention was to shorten the length of the device to make it as compact as possible, and to have a simple structure that would prevent malfunctions.
Moreover, it is an object of the present invention to provide an opening/closing holding device for doors, etc., which is designed to operate smoothly.

According to the drawings, in FIGS. 1 to 3, reference numeral 1 denotes a case with an opening at the end to which a bottom cover 2 is attached, and has attachment parts 1a and 1a on the left and right sides. A magnet body 3 protrudes from the opening of the case 1, and one end of the magnet body 3 is engaged with an auxiliary adsorption piece 4 that is slightly movable back and forth in a locking groove 1b provided in the case 1. is fixed.

Reference numeral 5 denotes an operating body, which is housed in the case 1 so as to be slidable. A magnetic attraction piece 6 is fixed to the tip of the actuating body 5, and is adapted to come into contact with one side of the magnet body 3 while housed in the case 1. A compression coil spring 7 is elastically installed between the operating body 5 and the case 1. This compression coil spring 7 is connected to the auxiliary adsorption piece 4.
It has a larger elasticity than the attraction force of the piece to be attracted by magnetic force, which will be described later. An endless groove 8 is cut into the inner surface of the bottom cover 2 of the case 1, and the tip of a control pin 9 protruding from the operating body 5 is fitted into the endless groove 8. And this control pin 9
is inserted into a stepped elongated hole 10 provided perpendicularly to the sliding direction of the actuating body 5 so as to be movable in the horizontal and vertical directions, and its head is fitted into the endless groove 8, Further, a compression coil spring 11 is resiliently installed between a collar portion 9a provided near the head and a step portion 10a provided in the elongated hole 10.

Now, in the state shown in FIGS. 1 to 3 in which the actuating body 5 is housed in the case 1, the control pin 9 is located approximately in the center of the elongated hole 10, and especially as shown in FIG. As shown above, the actuating body 5 is held in this position by being locked by the locking portion 8a of the endless groove 8. The attraction piece 6 fixed to the tip of the operating body 5 contacts the magnet body 3 with a maximum contact area, and is magnetized together with the auxiliary attraction piece 4.

When the tip of the actuating body 5 is pushed a little and released from this state, the actuating body 5 moves back slightly together with the auxiliary adsorption piece 4 against the elasticity of the compression coil spring 7, and the control pin 9 is attached to the locking part 8a. It moves back inside the endless groove 8 while moving a little laterally inside the elongated hole 10 without returning to its original position.
It falls into step 8c. Then, since there is no locking part in this part of the endless groove 8, the control pin 9 is guided to the second step part 8c, and without returning to its original position, it moves laterally within the elongated hole 10 a little further and is activated. body 5
As it moves forward due to the elasticity of the compression coil spring 7, it moves within the endless groove 8 and the third
When the actuating body 5 falls to the stepped portion 8d, it comes into contact with a protrusion (not shown) provided in the case 1 and stops.

Of course, at this point, the control pin 9 may be locked at a predetermined position in the endless groove 8 to prevent further advancement of the actuating body 5.

On the other hand, since the contact area of the attraction piece 6 with the magnet body 3 is zero or extremely small, its magnetic force is zero or significantly reduced.

Next, when the tip of the actuating body 5 is pressed again in the direction inside the case 1, the actuating body 5 retreats against the elasticity of the compression coil spring 7, and the control pin 9 moves to the third position.
Guided by the stepped portion 8d, it moves in the same direction as before in the endless groove 8 while moving rightward in the elongated hole 10 without returning to its original position. Then, the actuating body 5 hits the inside of the case 1 at the point where it falls into the fourth stage part 8e according to a predetermined dimension, and
When the control pin 9 reaches a position where it cannot be stored any further, when the hand is released, the control pin 9 is guided by the fourth step 8e and falls into the first step 8b, where it is locked by the locking portion 8a. be done.

Then, the attraction piece 6 maximizes the contact area with the magnet body 3 and is strongly magnetized.

As described above, each time the actuating body 5 is pressed, this operation is reliably and smoothly repeated by the control pin 9 which is always pressed toward the endless groove 8 side.

Therefore, as shown in Figure 5, case 1
If the attachment parts 1a, 1a are attached to the opening of the cabinet 12, for example, with the magnet 3 side first, and the piece 14 to be attracted is attached to the part of the door 13 that comes into contact with the magnet 3 side, the door 13 will be attached. When the actuating body 5 is first pressed a little forcefully and closed, the actuating body 5 is locked in the locking part 8a of the endless groove 8 via the control pin 9.
Furthermore, in this state, the attracted piece 14 is held in the closed state by being magnetically attracted by the attracting piece 6 and the auxiliary attracting piece 4 that are in contact with the magnet body 3 over the maximum area.

When opening the door 13, when the door 13 is pushed again in the closing direction, the actuating body 5 is released from the locked state via the control pin 9 as described above, and furthermore, as described above, the forward force is released in advance. According to the predetermined calculation, the suction force on the suction piece 14 is stronger than the suction force by the auxiliary suction piece 4, so the actuating body 5 releases this suction force and moves forward, automatically pushing the door 13. It can be opened.

Although the above embodiment has been described with reference to the case in which the endless groove 8 is provided on the case 1 side, the endless groove 8 may also be provided on the operating body 5 side, and in that case, the control pin 9 is provided on the case 1 side. established in

Further, in the above embodiment, the magnet body 3 is fixed to the case 1 side via the auxiliary adsorption piece 4, but this magnet body 3 is attached to the actuating body 5 side and moves together with the actuating body 5. It may be replaced with a well-known technique configured as shown in FIG.

As explained in detail above, this invention has a simple structure and allows the device to be made more compact, especially in terms of length, than a device using a crank-type control pin. ,
The operation is more reliable and smoother than when a ball is used in place of the control pin, and malfunctions do not occur even after many years of use.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and Fig. 1 is a perspective view thereof, Fig. 2 is a bottom view, Fig. 3 is a sectional view taken along the line A-A in Fig. 2, and Fig. 4 A is a view of the endless groove. FIG. 5 is a perspective view of a portion, FIG. 5 is a plan view showing an example of use. 1...Case, 2...Bottom cover, 3...Magnet, 4
... Auxiliary adsorption piece, 5 ... Working body, 6 ... Adsorption piece,
7... Compression coil spring, 8... Endless groove, 9... Control pin, 10... Elongated hole, 11... Compression coil spring.

Claims (1)

[Scope of utility model registration request] A case, an actuating body having a magnet or a magnetic substance attached to its tip, which is slidably housed in the case, and an actuating body which is elastically installed between the actuating body and the case and attaches the actuating body in one direction. an endless groove having a locking portion and a plurality of steps provided on either the case or the actuating body; and an endless groove provided on the actuating body or the case that is fitted and locked in the endless groove; The control pin is configured to be movable horizontally and vertically within an elongated hole provided perpendicularly to the moving direction of the actuating body, and the control pin is configured to have a side that contacts the endless groove. An opening/closing holding device for a door, etc., characterized in that it is energized.