JP2562148B2 - Push-button switch - Google Patents

Description

Detailed Description of the Invention

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a push button switch that can obtain a push lock type push button switch.

[Prior art]

Conventionally, as a lock device of a push-lock type push button switch used for emergency stop, a lock device shown in FIG. 6 is known. In FIG. 6, 24 is a push rod into which a push button 25 is screwed into the head and has a groove 24a, an inclined surface 24b, and a protrusion 24c at the lower end.
7 is a guide case 3 attached to the case 36 with screws 38
A pin that is movably housed in 2 and is pressed by the spring 26 toward the push rod 24, 29 is a lower push rod that operates the switch 28 by being guided by the base 39, 30 and 31 are return springs, and 34 is the case 36. A nut mounted in the mounting hole 33a of the panel 33, and 35 are packings for preventing water or oil from entering the surface of the panel 33. The operation of the push-lock type push button switch shown in FIG. 6 is as follows. Ie push button
When 25 is pressed, the push rod 24 is pushed down, and the pin 27 which is in contact with the groove 24a provided at the lower end of the push rod 24 is guided by the inclined surface 24b and moves outward against the spring 26. Projection of push rod 24
When the pin 27 is moved over 24c, the pin 27 moves inward by the spring 26 and projects to the upper surface of the protrusion 24c to maintain the pressed state of the push button 25. At this time, the push rod 24 pushes down the lower push rod 29 to operate the switch 28 by the lower push rod 29. Next, to release the pressed state of the push button 25, the push button 25 is rotated. At this time, the push rod 24 also rotates and the protrusion of the push rod 24
As shown in FIG. 7, pin 27 can pass through 24c, and groove 24a
Since the groove 24D that communicates with the
The push rod 24 and the lower push rod 29 are returned to the state shown in FIG. 6 by the return springs 30 and 31 which are urged when they coincide with the groove 24D of 4c, and the pin 27 is returned to the groove 24a. The return spring 31 has a push rod 24 at one end.
Since it is composed of a torsion spring that also serves as a push spring, the other end of which is locked to the guide case 32, the push rod 24 is returned to its original position before rotation, and the rotation direction of the pin 27 and the groove 27D of the protrusion 24c is changed. The positional relationship of is returned to the position shown in FIG.

[Problems to be Solved by the Invention]

By the way, the conventional push-lock type push-button switch shown in FIG. 6 has a structure in which a lock device that occupies a large space is provided in the case 36, and therefore there is a limit to the downsizing of the case 36. If the mounting hole 33a has a small diameter, it cannot be mounted on the panel 33. Further, at the time of assembly, since the respective parts are sequentially incorporated into the case 36 and the assembling work is performed inside the narrow case 36, there is a problem that workability is poor. The present invention has been made in view of the above problems, and an object thereof is to be able to mount even a small-diameter mounting hole,
Moreover, it is an object of the present invention to provide a push button switch which can obtain a push lock type push button switch which can be easily assembled.

[Means for Solving the Problems]

The above object is to provide a lock member having a protrusion band having a plurality of notches on an inner wall thereof, a second push rod fitted to the lock member so as to be vertically movable and rotatable, and having a push button attached to an upper end thereof. A pin which is movably arranged in a horizontal direction in a plurality of lateral holes open to the outside provided in the second push rod, is spring-biased outward, and can pass through the notch of the lock member; The lock member and the second
A torsion spring which is arranged between the push rod and the second push rod and biases the second push rod upward, and a second push rod which is engaged with the upper end of the lock member and is biased upward by the twist spring inside the lock member. A unitized lock device section composed of a cover for holding the lock device, and an outer diameter smaller than the outer diameter of the lock member of the lock device section, which is inserted into the hole of a predetermined size formed in the panel from the panel surface side. A cylindrical case having a diametrical dimension, a first push rod which is vertically movably fitted in the case, is spring-biased upward, and has a lower end abutting an operation lever of a switch mounted on a lower portion of the case. And a push button portion for momentary that can be coupled to the upper end of the first push rod of the body portion, and the push button portion for momentary is attached to the upper end of the first push rod of the body portion. Attach To form a momentary operation type push button switch, the unitized locking device portion is arranged on the front surface side of the panel, and the lower end of the second push rod of the locking device portion is placed at the upper end of the case of the body portion. This is achieved by a push button switch which is formed by abutting against the upper end of the push rod to form a push lock type push button switch. In the push-button switch that can obtain the push-lock type push-button switch according to the present invention, a lock device that occupies a large space is unitized as a lock device part, and the body is above the body part that is inserted into the mounting hole of the panel. Since the case of the body portion is downsized because it is arranged separately from the portion, it can be attached to the panel even when the attachment hole of the panel has a small diameter. Further, since it is not necessary to assemble the lock device section in the case of the body section in a narrow space, the assembly is facilitated and the workability can be improved.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main portion of a push-lock type push button switch according to the present invention, and FIG. 2 is a sectional view taken along the line AA. As shown in FIG. 1, this push-lock type push button switch mainly includes a lock device section 1, a body section 2, and a switch section 3. The lock device portion 1 includes two substantially semi-cylindrical lock members 4 each having a protruding band 4a provided on an upper inner wall and a spring support portion 4c provided on a lower inner wall, and an engaging piece 10 protruding downward.
A ring-shaped cover 10 having a and an engagement arm that engages with an engagement hole provided in the lock member 4, and is fitted to the lock member 4 so as to be vertically movable and rotatable, and has a push button 5 on the upper portion. Is inserted into the hollow cylindrical second push rod 6 having a protrusion 6a formed on the intermediate outer periphery thereof, and two horizontal holes 6b provided on the protrusion 6a of the second push rod 6 and facing each other by 180 ° in the horizontal direction. A pin 8 which is movably arranged on the second push rod 6 and is biased outward by a spring 7 and an upper end of which is a protrusion 6a of the second push rod 6.
A return spring 9 which is in contact with the lower end surface of the lock member 4 and whose lower end is supported by the spring supporting portion 4c of the lock member 4 and also acts as a torsion spring. The two lock members 4 are locked by the engaging arms of the cover 10. It is assembled so as to fit with the engaging piece 10a, and is inserted into the rosette 21 which is a constituent member of the outer shell. Further, the body portion 2 has a cylindrical case 12 and a hollow cylindrical first push rod 13 inserted into the case 12 so as to be vertically movable.
And the packing 14 inserted between the inner circumference of the case 12 and the first push rod 13 and the upper end abut on the projection 13a of the first push rod 13 to urge the first push rod 13 upward. The return spring 15, the light source 16 arranged in the first push rod 13 and blinking according to the operating state of the switch 19, and the first push rod 13 by closing the upper opening of the first push rod 13. Light-transmissive cap 17 inserted on the inner circumference
And a packing 18 inserted between the outer periphery of the cap 17 and the first push rod 13. Further, the switch part 3 includes a switch 19, an operation lever 20 for operating the switch 19, and a holder 21 for holding the switch 19, and the upper end of the operation lever 20 has a first push rod.
It is attached to the lower part of the body 2 so as to abut the lower end of 13. It should be noted that the locking device portion 1 and the body portion 2 have the inward locking claws 11a and 11b protruding from the lower portion of the lock member 4 and the cover 10 of the locking device portion 1 shown in FIG. By engaging with an engaging hole (not shown) provided on the outer circumference, the lower end of the second push rod 6 of the lock device portion 1 and the upper end of the first push rod 13 of the body portion 2 are brought into contact with each other. Be combined. Next, the operation of this embodiment will be described. When the push button 5 is pressed, the second push rod 6 is pushed down, and the pin 8 arranged in the lateral hole 6b of the second push rod 6 slides the inclined surface of the protruding band 4a of the lock member 4 against the spring 7. . And pin 8
When the vehicle gets over the projecting strip 4a, it moves outward due to the bias of the spring 7 and is locked at the lower end of the projecting strip 4a. This state is the locked state of the lock device section 1 shown in FIG. Also,
At this time, the first push rod 13 is also pushed down in association with the second push rod 6, and the switch 19 is operated via the operation lever 20, whereby the light source 16 is turned on. To release the locked state of the lock device unit 1, the push button 5 may be twisted clockwise. That is, as shown in FIG. 2, the protrusion 4a of the lock member 4 has a notch 4b through which the pin 8 can pass.
The second push rod 6 is rotated by the twisting operation of the push button 5, and accordingly, the pin 8 locked to the lower end of the protruding band 4a of the lock member 4 is located at the position of the notch 4b. When it is rotated up to, the second push rod 6 is urged upward by the return spring 9, so that the pin 8 moves upward through the notch 4b of the lock member 4, and the lock device unit 1 is locked. Is released. Since the return spring 9 also functions as a torsion spring, the second push rod 6 rotates counterclockwise, but the protrusion 6a of the second push rod 6 contacts the side end surface of the engaging piece 10a of the cover 10. When it comes into contact, it stops and returns to the state before locking shown in FIG. At this time, the first push rod 13 of the body portion 2 is also returned upward by the return spring 15, and the operating lever 20 of the switch portion 3 is also pushed upward by the return force of the switch 19 to push the push lock type push. The button switch returns to the state before the push operation of the push button 5. By the way, in the push-lock type push button switch according to this embodiment, as shown in FIG. 1, a lock device having a large occupied space is used as the lock device portion 1 and is inserted into the mounting hole 22a of the panel 22 and fixed by the nut 23. Since it is arranged on the upper part of the body part 2 separately from the body part 2, it is easy to assemble, and the case 12 of the body part 2 is downsized so that it can be attached to the small-diameter mounting hole 22a. it can. Further, it is also possible to share the parts with the momentary operation type push button switch. One example thereof will be described with reference to FIGS. 8 to 10. That is, the eighth
As shown in the figure, the nut 4 is installed in the mounting hole 41a formed in the panel 41.
When the push button 44 shown in FIG. 9 is pulled out from the momentary operation type push button switch 40 fixed by 2,
A main body portion 47 including the rosette 43, the body portion 45 and the switch portion 46 shown in FIG. 10 remains, but the cap 17 shown in FIG. 4 and the lock device portion 1 shown in FIG. And the push-lock type push button switch of the embodiment.
In this way, the cost of parts can be reduced by mass production by sharing the parts with other push button switches having different operations.

【The invention's effect】

As described above, in the push-button switch that can obtain the push-lock type push-button switch according to the present invention, the locking device that occupies a large space is unitized as the locking device part and is divided into the upper part of the body part and the body part. Since it is arranged, the case of the body portion can be downsized, and the panel can be mounted on the panel even when the panel mounting hole of the operation panel has a small diameter. Further, since it is not necessary to assemble the lock device in the case of the body portion in a narrow space, the assembly is easy and the workability can be improved. Further, since the parts can be shared with the momenter operation type push button switch, it is possible to expect a reduction in the parts cost due to mass production and to standardize the assembly.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a push-lock push button switch according to the present invention

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a vertical cross-sectional view of the main part of the lock device section.

FIG. 4 is a vertical sectional view of the cap.

FIG. 5 is an operation explanatory view showing a locked state of the lock device section.

FIG. 6 is a vertical cross-sectional view of a main part of a conventional push-lock pushbutton switch.

7 is a sectional view of the locking device taken along the line AA of FIG.

FIG. 8 is a vertical cross-sectional view of a main part of a momentary operation type push button switch.

9 is a cross-sectional view of the push button portion of the momentary operation type push button switch shown in FIG.

10 is a cross-sectional view of the main body of the momentary operation type push button switch shown in FIG.

[Explanation of symbols]

1 ... Lock device section, 2 ... Body section, 3 ... Switch section,
4 ... Lock member, 4a ... Projection band, 4b ... Notch, 6
...... Second push rod, 6b ... Horizontal hole, 8 ... pin, 12 ... Case, 13 ... First push rod, 19 ... Switch, 20 ... Operating lever.

Claims (1)

(57) [Claims] 1. A lock member having a projection band having a plurality of cutouts provided on an inner wall thereof, a second push rod fitted to the lock member so as to be vertically movable and rotatable, and having a push button attached to an upper end thereof. A pin which is movably arranged in a horizontal direction in a plurality of lateral holes open to the outside provided in the second push rod, is spring-biased outward, and can pass through the notch of the lock member; A torsion spring that is arranged between the lock member and the second push rod and biases the second push rod upward, and a torsion spring that is engaged with the upper end of the lock member and biased upward by the torsion spring. A unitized locking device section composed of a cover that holds the second push rod in the locking member, and a locking member of the locking device section that is inserted into a hole of a predetermined size formed in the panel from the panel surface side. Smaller than outer diameter A cylindrical case having various outer diameters, and a first case that is vertically movably fitted in the case and is biased upward by a spring so that a lower end of the case comes into contact with an operation lever of a switch attached to a lower portion of the case. And a push button portion for momentary that can be coupled to an upper end of the first push rod of the body portion, and the push button portion for momentary is provided on the first portion of the body portion.
The push-button switch of the momentary operation type is formed by attaching the push-button switch to the upper end of the push rod, and the unitized locking device portion is arranged on the front surface side of the panel, and the second locking device portion is attached to the upper end of the case of the body portion. A push-button switch of a push-lock type is formed by abutting the lower end of the push rod on the upper end of the first push rod to attach the push-lock switch.