JPH0643956Y2 - Push button switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a push button switch used for indoor wiring.

[Conventional technology]

The push-button switch used for indoor wiring needs to operate stably for a long period of time, and therefore, the applicant proposes the push-button switch of JP-A-62-18470 as shown in FIGS. 6 and 7. However, this is fixed contact 29 fixed to the terminal accommodating chamber of the body 26, and the movable contact piece 22 of the movable contact 23 facing the fixed contact 29 is pressed by the upper surface spring 24 to be installed in the push button 21, The lower side of the push button 21 is supported by the pulling 24, and the push button
21 on one side, locking step 25a, 25b, 25 at each corner
A heart-shaped guide groove 25 having c and 25d is provided, and slides in the heart-shaped guide groove 25 in accordance with the operation of the push button 21 and the locking step 25
An elastic material latch 31 that is sequentially locked to a, 25b, 25c, 25d,
It is mounted in a fitting groove 30 provided on the side wall of the terminal housing chamber of the body 26.

In addition, like the small push button switch disclosed in Japanese Utility Model Laid-Open No. 58-34339, inside the main body with openings formed on the front and rear surfaces,
It houses a push button that has two movable contacts on both sides supported by a compression spring that crosses in a cross shape. It has a heart cam groove on the front of this push button, and the bent tip at the lower end of the lock pin is on the front of the main body. It is inserted in the lower hole, the upper end of this lock pin is provided so as to slide in the heart cam groove, and the back plate attached to the front and rear faces of the main body locks the movable contact supported by a push button and a cross-shaped cross compression spring. It is known that the pin and the pin are pressed together so as not to escape.

[Problems to be solved by the device]

The push button switch as shown in FIG. 6 and FIG.
When assembling the one-sided switch as shown in FIG. 8, the push button 21 having the movable piece 22 of the movable contact 23 is attached to the body 26.
It is easy to store it in the terminal storage chamber, but when assembling a switching switch where the upper fixed contact 4a and the lower fixed contact 4b face each other vertically as shown in FIG. Is the movable contact 23 between the upper and lower fixed contacts 4a and 4b.
The work of assembling the movable piece 22 is not easy.

In addition, the small push button switch disclosed in the above publication has two movable contacts that are pressed against each other by a compression spring that crosses in a cross shape, and thus mounted.
It is very difficult to assemble the movable contacts and springs on one sheet into the gaps where the fixed contacts vertically face each other on both sides, and the lock pin has the bent tip at the lower end of the lock pin at the bottom of the front of the body. Since it is held by inserting it into the lock pin, the holding of the lock pin becomes unstable during assembly, which makes assembly work difficult.In addition, the movable contact and the lock pin supported by the push button and the cross-shaped cross compression spring are moved back and forth together. The assembly work is extremely difficult because it must be stored while pressing it from the surface with the back plate at the same time, and the lower end of the lock pin is only inserted into the hole in the lower part of the front of the main unit and not fixed. Therefore, there is a problem that the lock pin wobbles unstably during the vertical movement of the push button and the movement in the heart cam groove becomes unstable.

An object of the present invention is to provide a push button switch which solves the above-mentioned problems, facilitates the assembling work, and prevents the operation from becoming unstable.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the push button switch of the present invention has a rectangular notch opening 3 formed at the center of the front wall of the terminal accommodating chamber 2, and fitting grooves 3a are provided at the upper ends of both side edges of the rectangular notch opening 3. In addition, a fitting hole 3b is provided on the lower side edge, and an upper fixed contact 4a and a lower fixed contact 4b are provided opposite to each other in the terminal storage chamber 2 to form the body 1, and the heart is formed on the front surface of the lower half 5a of the push button. The shape guide groove 6 is provided so that the engagement step portions 6a, 6 are provided at the corners of the heart shape groove.
b, 6c, 6d are provided, and in the inner space 5b of this push button lower half 5a,
The center portion of the movable contact 7 having the movable contacts 7a, 7a provided at both ends is installed, and the central portion of the movable contact piece is pressed by the pressing spring 8 to form the movable contact built-in push button 5. Inserted into the terminal storage chamber 2 through the rectangular notch opening 3 in the center of the front wall of the body 1, the compression spring 9 is installed on the lower side of the bottom surface of the lower half 5a of the push button, and the protruding ear pieces 10a are provided on both sides of the upper end. A rectangular closing plate 10 having a protrusion 10b on the lower edge is provided, and a fixed base portion 11b of a bending engagement line 11 having a bending engaging tip 11a is fixed to the rectangular closing plate 10 by molding. Is fitted into the rectangular notch opening 3 on the front wall of the body 1 and the protruding ear pieces 10 on both upper ends of the rectangular closing plate 10 are fitted.
a and the lower edge projection 10b are fitted into the fitting grooves 3a at the upper ends of both side edges of the rectangular cutout opening 3 and the lower edge projection 10b to close the rectangular cutout opening 3, and the rectangular closing plate The bent engagement tip 11a of the bent engagement line 11 fixed to 10 is fitted into the heart-shaped guide groove 6 provided in the movable contact built-in push button 5, and the push button retaining frame 12 is attached to the upper surface of the body 1. The push button switch of the present invention is configured.

[Action]

Since the body 1 has the rectangular cutout opening 3 opened in the center of the front wall of the terminal storage chamber 2, the movable contact built-in push button 5 can be inserted into the terminal storage chamber 2 from this opening 3 for assembly. Work becomes easy.

In addition, the movable contact built-in push button 5 is
Since the central portion of the movable contact piece 7 provided with the movable contacts 7a at both ends is installed and the central portion of the movable contact piece 7 is pressed by the pressing spring 8, the movable contact piece 7 is incorporated. The movable contact-embedded push button 5 can be inserted into the terminal housing chamber 2 with 8 being assembled, and the assembling work becomes extremely easy, and the cross-shaped push button switch of the conventional small push button switch disclosed in the above publication is disclosed. Like the movable contact supported by the cross compression spring, the two movable contacts pressed by the crossed compression springs and the spring are separated during the assembling work, which makes the assembly difficult. Does not happen.

The rectangular notch opening 3 on the front wall of the body 1 and the rectangular closing plate 10 that closes the rectangular notch opening 3 include a fitting groove 3a provided at the upper ends of both side edges of the rectangular notch opening 3 and a fitting hole 3b provided at the lower edge thereof. Further, since the protruding ear pieces 10a on both upper ends of the rectangular closing plate 10 and the protrusions 10b on the lower edge are fitted and attached, the rectangular closing plate 10 can be stably attached, and its attaching work becomes easy, and Since the folding engagement line 11 is molded and fixed to the rectangular closing plate 10, the work of assembling the folding engagement line 11 is extremely easy, and it is similar to the conventional small push button switch shown in the above publication. There is no difficulty in the assembling work, in which the movable contact and the lock pin supported by the push button and the cross-shaped cross compression spring must be housed while pressing the back plates against the front and rear surfaces of the main body.

By mounting the push button retaining frame 12 on the upper surface of the body 1, the movable contact built-in push button 5 can be assembled without coming out.

The push button switch assembled as described above, when the push button 5 is pressed, the heart-shaped guide groove 6 on the front surface of the lower half portion 5a of the push button is bent at the corner groove where the bent engaging tip 11a of the bent engaging line 11 is guided. The engaging step portions 6a, 6b, 6c, 6d at the bottom are sequentially engaged, but since the bent engaging line 11 is fixed to the rectangular closing plate 10 by molding, the conventional small size shown in the above publication is disclosed. Unlike the push-button switch, it does not wobble in an unstable manner, and the engagement operation is reliably performed sequentially.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1 of the present invention
1 is a longitudinal sectional view of a front surface of an embodiment, FIG. 2 is a longitudinal sectional view of a side surface thereof, and FIG. 3 is an exploded perspective view thereof. Terminal storage room provided in 3
Is a rectangular notch opening formed by notching the central portion of the front wall of the terminal storage chamber 2 in a rectangular shape, and the opening width W of the rectangular notch opening 3 is a movable contact incorporating a movable contact mounting piece 7 described later. The width is formed so that the built-in push button 5 can pass through. Fitting grooves 3a are provided on the upper edges of both sides of the opening edge of the rectangular notch opening 3, and fitting holes 3b are provided on the lower edge. Reference numerals 4 and 4 denote wire connection fittings provided on both sides of the body 1 and are shown in FIG.
The electric wires at the ends of the electric wires inserted through the electric wire insertion holes 14, 14 opened on the lower surface of the above are elastically locked by the locking and bending springs 15, 15 to be connected to the electric wire connecting fittings 4, 4. Reference numerals 4a and 4a denote upper fixed contacts which are connected to the wire connecting fittings 4 and 4 and are arranged on the upper side in the terminal storage chamber 2, and 4b and 4b are other lower fixed contacts which are arranged on the lower side. . The upper fixed contacts 4a, 4a and the lower fixed contacts 4b, 4b are arranged facing each other vertically on both sides.

Reference numeral 5 denotes a movable contact built-in push button 5, and the push button lower half portion 5a
A heart-shaped guide groove 6 is provided on the front surface of the.

The heart-shaped guide groove 6 is formed on the bottom surface of each corner of the heart-shaped groove as shown in FIG. 4 with engaging step portions 6a, 6b,
Provide 6c and 6d.

Further, in the inner space 5b of the push button lower half 5a of the movable contact built-in push button 5, the central portion of the movable contact 7 made of a conductive metal plate having the movable contacts 7a, 7a at both ends is installed. The movable contact piece 7 is installed in the inner space 5b by pressing with the pressing spring 8, and the movable contacts 7a, 7a at both ends of the movable contact piece are projected to both sides of the lower half 5a of the push button.

As described above, the movable contact piece 7 having the movable contacts 7a at both ends is pressed by the pressing spring 8 and is assembled in the lower half 5a of the push button. 2 The movable contacts 7a, 7a at both ends of the movable contact piece 7 which is inserted into the terminal storage chamber 2 through the rectangular notch opening 3 on the front wall and which protrudes on both sides of the lower half 5a of the push button are arranged vertically in the terminal storage chamber 2. It is inserted between the upper fixed contacts 4a, 4a and the lower fixed contacts 4b, 4b.
A compression spring 9 is installed below the bottom surface of the push button lower half portion 5a inserted into the terminal housing chamber 2.

Reference numeral 10 is a rectangular closing plate, which is formed in a rectangular shape having a width and a height which fit into the rectangular cutout opening 3. On both sides of the upper end of the rectangular closing plate 10, there are fitting grooves at the upper ends of both sides of the rectangular notch opening 3.
A protruding ear piece 10a that fits in 3a is provided, and a projection 10 that fits in a fitting hole 3b at the lower opening edge of the rectangular cutout opening 3 is provided at the lower edge.
Provide b.

Reference numeral 11 is a bent engagement line formed by bending an elastic metal wire, a bent engagement tip 11a is formed at the tip, and a fixed base 11b is formed at the bottom.
The fixed base portion 11b is integrally molded and fixed to the rectangular closing plate 10, and the bent engagement tip 11a is projected and held inside the rectangular closing plate 10.

The rectangular closing plate 10 with the bent engagement line 11 attached as described above.
Is fitted into the rectangular notch opening 3 of the body 1, and the protruding ear pieces 10a on both sides of the upper end of the rectangular closing plate 10 are fitted into the fitting grooves 3a at the upper ends of both side edges of the rectangular notch opening 3. The projection 10b at the lower edge of the rectangular closing plate 10 is fitted into the fitting hole 3b at the lower edge of the rectangular cutout opening 3.

Further, the bent engaging tip 11a of the bent engaging line 11 which is held by the rectangular closing plate 10 and protrudes inward thereof is connected to the heart-shaped guide groove on the front surface of the lower push button half 5a of the movable contact built-in push button 5. Insert into 6.

As described above, the push button with built-in movable contact 5 is mounted on the upper surface of the body 1 to which the rectangular closing plate 10 is attached, and the push button retaining frame 12 is covered and fixed by the mounting bracket 13 so that the push button with incorporated movable contact 5 does not come out. Then, the push button switch of the present invention is constructed.

The push button switch of the present invention constructed as described above operates as follows. First, the movable contact built-in push button 5 is in the state shown in FIG. 5 (1), and the movable contacts 7a, 7a at both ends of the movable contact piece 7 projecting on both sides of the lower half 5a of the push button are fixed contact points 4a, 4a on the upper side. The contact circuit is a closed circuit of the left upper fixed contact 4a-left movable contact 7a-movable contact piece 7-right movable contact 7a-right upper fixed contact 4a. And the heart-shaped guide groove 6 on the front of the lower half 5a of the push button.
It is assumed that the bent engagement tip 11a of the bent engagement line that is fitted in the state is engaged with the engagement step 6a at the lowermost corner of the heart-shaped guide groove 6.

Next, when the movable contact built-in push button 5 in the state of FIG. 5 (1) is pushed down against the compression spring 9, as shown in FIG. 5 (2), together with the pushed push button lower half portion 5a, The movable contact piece 7 descends to bring the movable contacts 7a, 7a into contact with the lower fixed contacts 4b, 4b, and the heart-shaped guide groove 6 also descends to bend the heart-shaped upper right corner engaging step 6b. The bending line is lowered to the same horizontal level as the position of the bent engagement tip 11a of the engagement line, and the bent engagement tip 11a is engaged with the engagement step 6b.

Then, when the push button 5 in the state of FIG. 5 (2) is released, the push button 5 is pushed up by the compression spring 9 as shown in FIG. 5 (3), and the heart-shaped guide of the push button lower half 5a is formed. The groove 6 also rises and the engaging step 6c at the upper middle corner of the heart
Rises to the same horizontal level as the position of the bent engagement tip 11a of the bent engagement line, and the bent engagement tip 11a engages with this engagement step 6c to stop and hold this position. At this time, the lower half of the push button
Since the movable contact piece 7 in 5a is pushed down by the pressing spring 8, the state in which the movable contacts 7a, 7a are in contact with the lower fixed contacts 4b, 4b is maintained, and the contact circuit is shown in FIG. ) Left lower fixed contact 4b-left movable contact 7a-movable contact 7-
A closed circuit of the right movable contact 7a and the right lower fixed contact 4b is formed and held.

Next, when the push button 5 in the state of FIG. 5 (3) is pushed down again, the heart-shaped guide groove 6 also descends as shown in FIG. 5 (4) and the engagement step 6d of the heart-shaped upper left corner portion is formed. Is lowered to the same horizontal level as the position of the bending engagement tip 11a of the bending engagement line, and the bending engagement tip 11a is brought into engagement with the engagement step 6d.

Then, when the hand holding down the push button 5 of FIG. 5 (4) is released, the push button 5 is pushed up by the compression spring 9, and the heart-shaped guide groove 6 also rises, and the engagement step portion 6a of the heart-shaped lower end corner portion is released. The folding engagement tip 6a is raised to the same horizontal level as the position of the folding engagement tip 11a of the folding engagement line, and the folding engagement tip 11 is attached to the engagement step portion 6a.
When a is engaged and stopped, this state is maintained and Fig. 5 (1)
Then, the contact circuit is closed by closing the upper fixed contacts 4a, 4a with the movable contact piece 7 and the movable contacts 7a, 7a.

By repeatedly pressing down the movable contact built-in push button 5 as described above, the circuit for closing the upper fixed contacts 4a, 4a and the circuit for closing the lower fixed contacts 4b, 4b are alternately formed.

[Effect of device]

As described above, the present invention configures the movable contact built-in push button 5 in which the rectangular cutout opening 3 is opened in the terminal storage chamber 2 and the movable contact piece 7 having the movable contact 7a is pressed by the pressing spring 8 to be incorporated. Therefore, the movable contact 7a can be assembled by inserting the movable contact-embedded push button 5 into the terminal storage chamber 2 through the opening 3 with the movable contact 7a still assembled.

Further, the rectangular notch opening 3 is provided with a fitting groove 3a at the upper end and a fitting hole 3b at the lower side, and the rectangular closing plate 10 is provided with a protruding ear piece 10a at the upper end and a projection 10b at the lower edge to fit these. Since the square blocking plate 10 is attached to the square cutout opening 3 to close the square notch opening 3,
The work of attaching the rectangular closing plate 10 is reliable and easy.

Further, since the bending engagement line 11 is fixed to the rectangular closing plate 10 by molding, the work of incorporating the bending engagement line 11 becomes extremely easy.

Further, since the push button retaining frame 12 is attached to the upper surface of the body 1, the movable contact built-in push button 5 can be assembled without coming out, and the difficulty of the conventional assembling work can be eliminated.

Further, since the bent engagement line 11 is fixed to the rectangular closing plate 10 by molding, it does not wobble in an unstable manner during the operation of the push button switch, and the sequential engagement operation of the engagement step portion of the heart-shaped guide groove 6 is surely performed. It is done.

[Brief description of drawings]

1 is a vertical cross-sectional view of the front of one embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the side surface, FIG. 3 is an exploded perspective view, FIG. 4 is a view showing a heart-shaped guide groove, and FIG. Is an explanatory view of the operation, FIG. 6 is a vertical cross-sectional view of the front surface of the conventional example, FIG. 7 is a vertical cross-sectional view of the side surface of the conventional example, FIG. 8 is a diagram of a one-way switch, and FIG. 9 is a diagram of a changeover switch. is there. 1: Body, 2: Terminal storage chamber 3: Square notch opening 3a: Fitting groove, 3b: Fitting hole 4a, 4a: Upper fixed contact, 4b, 4b: Lower fixed contact 5: Movable contact built-in push button, 5a: Lower half of push button 6: Heart-shaped guide grooves 6a, 6b, 6c, 6d: Engagement step 7: Movable contact piece, 7a: Movable contact 8: Pressing spring, 9: Compression spring 10: Rectangular closing plate 10a: Protruding ear piece, 10b: Protrusion 11: Bending engagement line 11a: Bending engagement tip, 11b: Fixed base 12: Push button retaining frame

Claims (1)

[Scope of utility model registration request] 1. A fitting groove (3a) is provided at the upper end of both side edges of a rectangular notch opening (3) provided at the center of the front wall of the terminal accommodating chamber (2), and a fitting hole (3b) is provided at the lower edge. And the upper fixed contact (4a) and the lower fixed contact (4b) are vertically opposed to each other in the terminal storage chamber (2) to form a body (1), which is connected to the corner of the heart-shaped groove. Multi-stage part (6a), (6b),
A heart-shaped guide groove (6) having (6c) and (6d) is provided on the front surface of the lower half of the push button (5a), and the lower half of the push button (5) is formed.
A movable contact piece (7) having movable contacts (7a) at both ends is installed in the inner space (5b) of (a), and a pressing spring (8) is provided to form a movable contact built-in push button (5). Insert the contact-embedded push button (5) into the terminal storage chamber (2) through the rectangular notch opening (3), and press the lower half of the push button (5).
Install a compression spring (9) below the bottom of (a), and attach the bent engagement tip (11a) to the rectangular obturator plate (10) that has the protruding ear pieces (10a) and the lower edge protrusion (10b). The base portion (11b) of the bent engaging line (11) is fixed by molding, and the ear pieces (10a) and the lower edge protrusion (10a) projecting from both upper ends of the rectangular closing plate (10).
b) the square notch opening (3) with the fitting groove (3
a) and the fitting groove (3a) on the lower edge to close the rectangular notch opening (3), and to fold the bent engagement line (11) fixed to the rectangular closing plate (10). Insert the curved engaging tip (11a) into the lower half of the push button (5
A push button switch fitted in the heart-shaped guide groove (6) of a) and attached with a push button retaining frame (12) on the upper surface of the body (1).