JPS597700Y2 - Interlocking lock push button switch lock release mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an unlocking mechanism for an interlocking lock pushbutton switch, which unlocks an already locked pushbutton during the return stroke of a specific pushbutton.

When a specific push rod is equipped with a so-called momentary action single-pole double-throw switch, the operating time relationship between this switch and a separate single-pole double-throw switch attached to another lock push rod is It may be considered a problem.

In other words, after the close or open side contact of the switch attached to the specific push rod is opened when the specific push rod is pressed, the close (or open) side contact when the lock push rod is pressed may be opened (or closed). It may be required for circuit functionality.

The same can be said of the problem in which the open-circuit side contact of the switch attached to a specific push rod is closed when a specific push rod is pressed, and then the return operation side contact of the switch attached to the lock push rod should operate.

In a normal interlocking lock pushbutton switch, the already locked pushbutton is generally unlocked by the pressing stroke of another pushbutton. It is clear that it is impossible to meet the above requirements by setting the bar.

Therefore, prior to solving the above technical problem, the specific push rod must necessarily be a momentary action push rod.

A momentary action push rod is also called a non-locking type or an automatic return type push rod, and in a broad sense, it also includes push rods that perform a push-push action.

That is, the push-push action push rod, which is also called a two-stage action push rod, is just one form of an automatic return type push rod that has been put on hold for a long time.

By the way, as a mechanism for releasing the lock push button of an interlocking lock push button switch using a specific push rod for momentary operation, a method of disposing a bullet on a part of the locking plate of the lock push rod is already widely known. .

However, in the past, when the bullet is operated, the locking plate of the locking lever is slightly moved in a direction that resists the retaining force of the locking plate against the locking lever, that is, against the locking plate. This has the drawback of generating a component force that acts as a force in the unlocking direction.

This component of force causes the locking of the locking rod to become unstable when actually assembling the switch, and is a difficult point in each manufacturing process that cannot be ignored. It is also known to use a sliding pin that is loosely fitted into the locking plate and is opposed to the locking rod, but this method adds a new part, which is undesirable. There was a demand for a new mechanism with high economic utility.

The present invention was developed in response to such a request, and has an extremely simple structure consisting of only one bullet, which ensures stable locking of the locking lever and reliable release function of the locking lever. The present invention provides a lock release mechanism for an interlocking lock pushbutton switch that is easy to assemble and is particularly suitable for application to a pushbutton switch with a rotary locking plate, also called a butterfly type.

The structure and the like will be explained in detail below with reference to embodiments shown in the drawings.

FIG. 1 is a perspective view of essential parts of an embodiment of a locking lever release mechanism according to the present invention, in which a plurality of locking levers are represented by a single lever, and the frame and switches attached to the levers are omitted. , Figure 2 is an explanatory diagram of the operation seen from the side, where a, l), and c show the pressing strokes of the specific push rod, d and e show the return strokes, and the third
The figure is a perspective view showing another embodiment of the bullet 6, and FIG. 4 is a perspective view of a main part of another embodiment according to the present invention.

In these figures, the reference numeral 1 denotes a locking rod, which is loosely fitted in a frame body (not shown) in parallel in the plane of the first drawing and is slidable back and forth in the direction of the arrow a. The frame body is constantly receiving a return biasing force from the spring 2 in the direction opposite to the arrow a.

3 is arranged in the direction perpendicular to arrow a and parallel to the paper surface of FIG. 1,
This is a locking plate for the locking rods 1, 1, in which the vicinity of one edge 3a is the axis of rotation with respect to the frame body, and the vicinity of the other end 3b is the end of the force distribution, and the free edge 3b is from the back side of the paper in Figure 1 to the direction of the paper. In other words, the locking levers 1, 1 are biased to rotate by the spring 4 (Fig. 2).

Reference numeral 5 denotes a specific push rod that is loosely fitted into the frame in parallel with the lock push rods 1, 1 in the plane of the drawing and is capable of sliding back and forth in the direction of arrow a. 2, same spring 2 as 2
Therefore, the frame body is constantly receiving a return biasing force in the direction opposite to the arrow a.

An operating piece 5a is formed integrally with the specific push rod 5 on the side surface of the specific push rod 5, close to and parallel to the free end 3b of the locking plate 3. 1, the main direction is parallel to the longitudinal direction of the specific push rod 5, and one end 6a is attached to the locking plate 3.
The bullet is supported near the rotation axis of the bullet, the other end (the end in the direction of the arrow a) is a free end, and the inclined surfaces 6b and 6C having a width D widened in the direction of the arrow b are integrally formed. When the specific push rod 5 is pressed and moves forward, the end of the operating piece 5a of the specific push rod 5 comes into contact with one inclined surface 6b of the bullet strip 6, and the specific push rod 5 returns. Sometimes, the end of the actuating piece 5a is a bullet 6.
Each relative position is set so as to come into contact with the other inclined surface 6c.

Note that 3c and 3c are ear pieces that are attached to the frame of the locking plate 3, and 3d... are hanging from the free edge 3b of the locking plate 3, and when the locking rod 1 is pressed, the locking rod 1 is pressed. This is an engagement piece that engages with the locking hook.

Further, the method of supporting the bullet 6 and the locking plate 3 may be any one of fitting, tapping, etc.

Although the locking lever release mechanism of the interlocking locking pushbutton switch of the present invention is constructed as described above, when the first locking lever 1 is locked, the specific pusher 5 is pressed in the direction of the arrow a in the state shown in FIG. 2a. Then, the actuating piece 5a integrated with the specific push rod 5 is activated by the bullet 6.
The actuating piece 5a comes into contact with one of the inclined surfaces 6b and bends the bullet 6 in the direction of arrow C, reaching the state shown in FIG. leading to.

During this time, the locking plate 3 is attached to the locking lever 1 in the unlocking direction (
It is considered that the rotational force in the opposite direction of arrow C is almost never applied, and it goes without saying that the switch attached to the specific push rod 5 is designed to open or close or operate.

When the operation pressing force of the specific push rod 5 is released, that is, when the specific push rod 5 returns, the operating piece 5a comes into contact with the other inclined surface 6C as shown in FIG. While rotating counterclockwise against the biasing force 4, it reaches the position e in the same figure.

During this rotating operation of the locking plate 3, the engagement relationship between the other locked push rods 1 and the engagement piece 3d of the locking plate 3 is also released, so that the locking push rods 1 can be attached to the spring 2. Depending on the power, he will be on a return journey.

During this time, the switch attached to the lock push rod 1 is also in the open or closed state, but the relationship between the switch attached to the specific push rod 1 and the operating time can be easily determined by appropriately selecting the installation position of each switch. can be determined.

There is a concern that the locking plate 3 may rotate counterclockwise due to the kinetic energy of the bullet 6 at the time of return when moving from FIG. 2 b to C. , the masses are all small, so it's hardly a problem.

Furthermore, in the present invention, it is possible to change the shape of the bullet 6 to the shape shown in FIG.
In the pressing stroke, since the first inclined surface 6b is perpendicular to the locking plate 3, the bullet 6 moves in the opposite direction to the arrow b, and in the return stroke of the specific pressing rod 5, the other inclined surface Since the actuating piece 5a returns along 6C, the locking plate 3 is rotated in the direction that resists the rotational bias (the direction opposite to the lost mark C).
An operation similar to that shown in FIG. 2 can be performed.

Note that the present invention is not limited to the structure shown in FIGS. 1, 2, and 4, and it is of course possible to change the shape of the bullet 6 to the shape shown in FIG. 3, for example. Furthermore, in FIG. 4, the actuating piece 5a is shaped parallel to the plane of the paper (in the opposite direction to the direction b), but the actuating piece 5a is moved from the push rod 5 toward the back of the plane of the paper (in the opposite direction to the direction C). It is possible to perform a similar operation in any other form and is within the technical scope of the present invention.

As explained above, according to the present invention, it is possible to provide a lock push rod release mechanism for an interlocking lock push button switch with a new mechanism that ensures the locking stability of the lock push rod. Since the mechanism according to the present invention can be provided using only the specific push rod and the bullet, which are the same as those described above, there are advantages in that the number of parts is small, the structure is extremely simple, and the switch assembly is easy.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main parts of the push button switch according to the present invention;
The figure is an explanatory diagram of the operation of the locking lever release mechanism according to the present invention, and FIGS. 3 and 4 are other embodiments of the bullet according to the present invention. DESCRIPTION OF SYMBOLS 1... Lock push rod, 3... Locking plate, 5... Specific push rod, 5a... Operating piece, 6... Bullet, 6b, 6C...
・Slope surface.

Claims (1)

[Scope of utility model registration request] a plurality of press rods that are loosely fitted into the frame and are slidable in the longitudinal direction parallel to each other within one plane; a spring that urges each of the press rods independently in the return direction; is arranged in a direction intersecting each of the press rods in a plane parallel to the plane of An interlocking lock push button switch comprising a locking plate for interlocking locking of each of the press rods, which is rotationally biased towards each of the press rods, which is loosely fitted in the frame body, and which is rotated toward each of the press rods. A specific automatic return type push rod that is slidable in the longitudinal direction parallel to the push rod is attached in parallel with each of the above-mentioned push rods along with a return biasing spring for the specific push rod, and the An actuating piece is integrally provided on a side surface with the specific push rod, and on the other hand, the main direction of the locking plate is parallel to the specific push rod, and one end of the locking plate is parallel to the specific push rod. The bar is supported by a part of the bar, the other end is a free end, and an integrally formed bullet having two inclined surfaces is disposed, and is biased to rotate when the specific push rod is pressed. In order to move the bullet in a direction that does not resist the rotational bias of the locking plate, the operating piece of the specific push rod comes into contact with one inclined surface of the bullet, and the specific push rod returns. A lock push rod of an interlocking lock push button switch, characterized in that the actuating piece sometimes comes into contact with the other inclined surface of the bullet to move the locking plate in a direction that resists the rotational bias. Release mechanism.