JPH03222218A - Piano handle type switch - Google Patents

Abstract

PURPOSE:To reduce cost with part assembly man/days lessened by using a return elastic body, for the return force of a slide cam which body is integrally formed into the slide cam. CONSTITUTION:A synthetic-resin-made slide cam 33 is provided which is giving reversal turning force to a reversal handle 31 with sliding in a direction orthogonal to a pushedly moving direction in the back surface of a push-button handle 32 while pressedly crossing a mating projection 34 with a mating cam body 38 corresponding to the one side mating projection 34 neared to the push-button handle 32 due to the tilt of the reversal handle 31 out of the mating cam body 38 formed on both side end parts interlocking with the pushed movement of the reversal handle 31 and the push-button handle 32. Moreover a return elastic body is provided which gives spring force in an anti-sliding direction to the sliding of the slide cam 33 by integrally forming the return elastic body with the slide cam 33 and joining the body's free end with the push-button side. This permits the reduction of part working and assemble cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the structure of a piano handle type switch.

[Prior Art] This type of piano handle type switch has already been proposed by the present inventor in Japanese Patent Application No. 1-105123.

This conventional example includes an opening/closing body that is rotatably supported within the vessel body and opens and closes the contact portion, and a head that is exposed from the surface of the vessel body and that is movable within the vessel in a direction orthogonal to the exposed surface. A push-button switch comprising: a reversing means mounted in the container body for reversing the opening/closing body once in conjunction with a push of the push-button handle; and a return means mounted in the container body for biasing the push-button handle in a forward exposure direction; , constitutes a piano handle type switch consisting of a piano handle which is rotatably supported at one side on the outside of the push button switch and whose back surface is brought into contact with the head of the push button handle, and the reversing means is connected to the above opening/closing body. It is connected to the body via a coil spring and is pivoted to the body so that it can see-saw freely in the direction of rotation of the opening/closing body, and has engaging protrusions formed on the push button handle side surfaces of both ends. handle and
Among the engaging cam bodies formed at both ends in conjunction with the pushing of the push button handle, the engaging cam body corresponding to one of the engaging protrusions that approaches the push button handle due to the inclination of the reversing handle presses and engages the engaging protrusion. a slide cam that slides on the back surface of the push button handle in a direction perpendicular to the pushing direction and applies a reversing rotational force to the reversing handle; and a return means that makes the slide cam rebound in a counter-sliding direction to the sliding of the slide cam. It has a sharp structure.

[Problems to be Solved by the Invention] By the way, the conventional slide cam return means is shown in Fig. 10 (
a) As shown in (b,), press the push button handle 32 while holding the protrusion 33b provided on the side surface of the slide cam 33 with the tip of the C-shaped spring piece 37c of the return spring 37 of the push button handle 32 fixed to the push button handle 32. Slide cam 3 on the back side of
3 is slidable.

By the way, in such a conventional example, the spring piece 3 is attached to the return spring 37.
It is necessary to process and form the return spring 37.
Since it is necessary to connect the slide cam 33 to the slide cam 33, there is a problem in that parts assembly costs and parts processing costs are high.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a piano handle type switch that reduces parts processing costs and parts assembly costs.

[Problems to be Solved by the Inventionffl] In order to achieve the above object, the present invention provides a piano handle type switch in which the reversing means is connected to the opening/closing body via a coil spring and is configured to rotate in the rotating direction of the opening/closing body. The reversible handle is pivoted on the instrument body so that it can freely see-saw and the direction of the rotation axis is parallel to the direction of the rotation axis of the piano handle, and has engaging protrusions formed on the push button handle side surfaces of both ends. Among the engaging cam bodies formed at both ends in conjunction with the pushing of the push button handle, the engaging cam body corresponding to one of the engaging protrusions that approaches the push button handle due to the inclination of the reversing handle presses the engaging protrusion. A slide cam made of synthetic resin that slides on the back of the push button handle in a direction perpendicular to the pushing direction while engaging and applies a reversing rotational force to the reversing handle, and a slide cam that is integrally molded with this slide cam and is free on the push button handle side. The return elastic body has its ends connected to each other to apply a resilient force in the counter-sliding direction to the sliding of the slide cam.

[Function] According to the present invention, since the return force of the slide cam is absorbed by the return elastic body integrally molded with the slide cam, there is no need to process the return spring body of the push button handle as in the past, and the slide Since there is no need to assemble the parts together with the cam, the number of man-hours required for assembling the parts can be reduced and costs can be reduced.

[Example] The present invention will be explained below with reference to the example diagrams of FIGS. 1 to 5.

The push button switch 5 shown in FIG. 1 has a body 5a made of synthetic resin and a cover 5b made of synthetic resin.
When the body 5a is attached to the body 5a, the body locking claws 10 integrally protruding from the lower portions of both sides are locked into the locking holes 9 of the body 5a and connected.

The cover 5b further has side pieces 2b of the mounting frame 2 on both sides.
, 2b are integrally provided with locking claws 11a and llb corresponding to the locking holes 8 bored in the vertical sides thereof, and one of the locking claws 11b.
A space 12 is formed at the back of the cover 5b to provide a deflection margin, which is formed by a hole vertically penetrating the outer wall of the cover 5b.
1b can be elastically bent backwards.

The body 5a has connecting terminal storage parts 13, 14 formed on both sides, and a common terminal plate 15, a locking spring 16, and a release button 17 on one side.
The other side 14 houses a quick-connect terminal consisting of a terminal plate 18 and a locking spring 19 constituting a first connecting terminal portion, and a terminal plate 20 constituting a second connecting terminal portion. A locking spring 21 is housed therein, and a release button 22 common to the first and second connection terminal parts is housed therein.

The common terminal plate 15 is connected via the primary side of the current transformer CT to a support plate 15a of an opening/closing body 24 arranged at the bottom of the central storage part 23 of the body 5a.

The terminal plate 18 has an extending piece 18a that extends downward within the central housing part 23 so as to go over and along the partition wall 14a of the connecting terminal housing part 14, and the fixed contact 25 is attached to this extending piece 18a.
A is provided.

Further, the terminal plate 20 extends into the central storage portion 23 along the inner wall of the body 5a, and its tip is bent along the partition wall of the connection terminal storage portion 13, and the fixed contact 25a is attached to the tip of the bent piece 20a. A fixed contact 25b corresponding to the above is provided.

A printed circuit board 26 on which a display circuit is wired is placed on top of these terminal boards 18.20, and each terminal board 18.20 is
The more protruding terminals 18b and 20b are inserted into the connection holes 26a and 26a of the printed circuit board 26 and fixed by soldering.

The opening/closing body 24 is formed from an L-shaped conductive plate, and recesses 27, 27 are formed in the support plate 15a at the lower edge of the horizontal piece.
A protrusion 28.28 is formed to be engaged with the protrusion 2.
8. The movable contacts 29, which are arranged in the central storage part 23 and are vertically rotatable about the locking point 28 as a fulcrum, are provided on both sides of the vertical piece. Separate the common connection terminal section and the first. Alternatively, the connection with the second connection terminal section is turned on and off.

The coil spring 3 drives this opening/closing body 24 in reverse.
0, a reversing handle 31, a push button handle 32, a slide cam 33, etc., to form a reversing mechanism.

The lower part of the coil spring 30 is locked to a spring seat 24a provided on the upper edge of the horizontal piece of the opening/closing body 24, and the upper part is inserted into a cylindrical part 31a that projects integrally with the lower part of the reversing handle 31, and the upper part is inserted into the cylindrical part 31a that projects integrally with the lower part of the reversing handle 31. The opening/closing body 24 is reversely driven in accordance with the movement of the opening/closing body 31 in both directions.

The reversing handle 31 has shafts 31c provided on both end sides of a rectangular parallelepiped section 31b provided at the top of the cylindrical section 31a, and are rotatably supported by bearings 50 on the inner wall of the cover 5a.
It is inserted into the recess 51 from below through a hole 52 opened at the bottom of the recess 51, and the rectangular parallelepiped part 31b has engaging protrusions 34, which engage with the slide cam 33, on both upper sides thereof.
34 is installed protrudingly. This engaging protrusion 34.34 has an inner surface formed into a rounded surface.

The push button handle 32 has a locking protrusion 36 in a vertical locking groove 35 formed on both inner wall surfaces of the recess 51 of the cover 5a.
．． 36 is locked and housed in the recess 51 so as to be able to move up and down, and the two return flap pieces 37a, 37 are opened and expanded downward.
The push button handle 32 can be removed by inserting the return spring 37 integrally extending downward from both edges of the half piece 37b with the protrusion 32c protruding from the lower surface of the push button handle 32 into the hole 37d formed in the half piece 37b. The tips of the return spring pieces 37a and 37a of the return spring 37 are attached to the lower surface of the recess 51.
It is constantly biased upward by being in elastic contact with the bottom surface of the

As shown in FIG. 2, the slide cam 33 is made of highly elastic thermoplastic resin such as polysecure and has a substantially U-shaped bottom, and has a bottom surface corresponding to the engaging protrusion 34 of the reversing handle 31 on the lower surface of both legs. A hooking cam body 38 is provided in a protruding manner, and a pair of spring pieces 3 are integrally provided in the central part of the center piece in a ha-shaped manner.
3a, 33a, and a projection 32A formed on the lower surface of the push button handle 32 between the tips of the spring pieces 33a, 33a.
is inserted, and the slide cam 33 is slidably mounted on the lower surface of the push button handle 32, and the elasticity of the spring pieces 33a, 33a provides a return force in the counter-sliding direction.

箪c、P7It=壬Jusuga 彊りにんff("T") Guinard LED, neon tube, resistor R... is for the bottom of the circuit to display the on/off status of the switch.
One connection terminal section to which one end of the power supply is connected, one fixed contact 25b, two four points of body movement of the r#4W4 body 24, the support plate 15a, the current transformer CT, the common terminal board 15, and the load. When a current flows between the terminal and the other end of the power supply, the current transformer CT whose primary side is inserted between the common contact plate 15 and the support plate 15A of the switching body 24 detects the load current. The light emitting diode LED is turned on by the output, and the switching body 24 is reversed so that the movable contact 29 connects to the other fixed contact 25a.
The circuit consisting of the neon tube and the resistor R is then reconnected to the circuit where the load is turned off and the power supply connected between the terminals causes a current to flow and the neon tube lights up. Medium 40 is a neon lamp cover integrated, cover 5
The light from the neon tube is fitted into the hole 41 of b to illuminate the outside.

The hole 42 is a hole for inserting the head of the light emitting diode LED from inside and exposing it to the outside, and 44 in FIG. It is applied at the location 46. Furthermore, current transformer CT
The connection between the tank and the circuit is made by a lead wire (not shown), but the bottom of the tank is omitted.

The push-button switch 5 constructed in this manner has a cover 5b fitted from below into the window hole 6 of the metal mounting frame 2 shown in FIG. If the contact point is rotated using this contact point as a fulcrum while in contact with the upper surface of the periphery of the side piece 5b, the locking pawl 11a on the fulcrum side will engage in the locking hole 8, and the lower end of the vertical side of the other side piece 2b will be engaged. The retaining pawl 11b is pressed inward by the deflection of the space 12 and the elastic force of the material of the cover 5b to overcome the retaining pawl 11b, and the retaining pawl 11b is engaged in the retaining hole 8. Locking claws 11a, llb
The push-button switch 5 is locked and fixed by being engaged with the locking holes 8, 8, respectively, and the push-button handle 32 is projected from the window hole 6 of the mounting frame 2.

A piano handle 43 is attached to the push button switch 5 mounted on the mounting frame 2 in this manner. This piano handle 43 has a fulcrum rib 43c provided on one side edge as shown in FIG. 2 and the cover 5b of the pushbutton switch 5, and is rotatable about the abutting part of the fulcrum rib 43c. The foot 43b is attached to a locking space 47 formed between the cover 5b and the other side piece 2b of the mounting frame 2 so as to be movable up and down, and by pushing and rotating the piano handle 43, the push button can be pressed. handle 32
It can be driven by pushing. This piano handle 43 has a hole 51 fitted with a transparent cover 50 that transmits the neon tube and the light of the light emitting diode LED.
is perforated.

In this way, the push button switch 5 and the piano handle 43
FIGS. 5(a) to 5(d) show the state in which the mounting frame 2 is attached to the inner frame 54, and the decorative cover 55 is attached.
).

Next, the operation of the piano handle type switch of the present invention will be explained with reference to FIG.

First, in FIG. 5(a), when the piano handle 43 is pushed down, the push button handle 32 is pushed down against the spring piece 37a, and as a result of this pushing down, the slide cam 33 moves to the right as shown in FIG. 5(b). The tip of the upper engaging protrusion 34 of the reversing handle 31, which is in an inclined state by sliding against the spring piece 33a, is pushed down along the inner slope of the corresponding engaging cam body 38, and the reversing handle 31 is rotated. At the same time, as the user presses down, the tip of the engaging cam body 38 on the opposite side slides along the R inner surface of the engaging protrusion 34 to reversely rotate the reversing handle 31.

This reverse rotation causes the coil spring 30 to reversely swing, the opening/closing body 24 is reversed, and the movable contact 29 is separated from one fixed contact 25a in contact with the other fixed contact 25a.
b.

When the pressing down force on the piano handle 43 is released after this reversal, the push button handle 32 is pushed up by the spring piece 37a of the return spring 37, and the piano handle 43 also returns to its original state. At the same time, the reversing handle 31 also slides back to the central position by the spring force of the spring piece 33a, as shown in FIG. 5(c). In this state, if the piano handle 43 is pushed down, the opening/closing body 24 can be reversed by the same operation as described above. After this reversal, if the downward force on the piano handle 43 is released, the state will return to the state shown in FIG. 5(d).

By the way, when the spring piece 33a integrally formed with the slide cam 33 is formed to have a uniform width as shown in FIGS. 6(a) and (b), the maximum stress of the maximum displacement δ occurs at the base, and
If the outer shape is made into a parabolic shape with y = x2 so that the strength is uniform as shown in Figures (a>(b)), the maximum stress during deformation will occur throughout the entire body, for example, as shown in Figure 6. As in the case of the eighth
If the same maximum stress value and maximum displacement δ are obtained as shown in the figure, the return force F can be improved.

Furthermore, as shown in Fig. 9, in order to ensure the tip shape and facilitate mold processing, the parabolic shape shown by the broken line may be approximated to the trapezoidal shape shown by the solid line, and in this case, the flow of the molding material will also be improved. , the workability of parts is improved.

[Effects of the Invention] In order to achieve the above object, the present invention provides a piano handle type switch, in which the reversing means is coupled to the opening/closing body via a coil spring so as to be freely movable in the rotating direction of the opening/closing body. a reversible handle which is pivoted on the instrument body so that the direction of the rotation axis is parallel to the direction of the rotation axis of the piano handle, and has engaging protrusions formed on the surfaces of the push button handle side at both ends; Among the engaging cam bodies formed at both ends in conjunction with the pushing movement, the engaging cam body corresponding to one of the engaging protrusions that approaches the push button handle due to the inclination of the above-mentioned reversing handle presses the engaging protrusion and moves while engaging. A slide cam made of synthetic resin that slides on the back surface of the push button handle in a direction perpendicular to this direction and applies a reversing rotational force to the reversing handle, is integrally molded with this slide cam, and has a free end connected to the push button handle side. As a result, although it is composed of a return elastic body that provides an elastic force in the direction of movement of the ash layer against the sliding of the slide cam, it is not necessary to process the return spring body of the push button handle as in the past. Moreover, since there is no need to assemble the parts together with the slide cam, there is an advantage that the number of man-hours required for assembling the parts can be reduced and costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a push button switch according to an embodiment of the present invention, FIG. 2 (a) is an explanatory diagram of the relationship between the slide cam and the push button handle, and FIG. 2 (b) is a front view of the same slide cam. Figure 3 is an exploded perspective view of the same as the above, Figure 4 is a perspective view of the back side of the piano handle used in the above, Figures 5 (a) to (d) are explanatory views of the same as the above, and Figures 6 to 9 Figures 10(a) and 10(b) are explanatory diagrams of the specifications of the spring piece integrated with the slide cam shown above.
) is an explanatory diagram of a conventional example. 5 is a push button switch, 5a is a body, 5b is a cover, 32 is a push button handle, 43 is a piano handle, 29 is a movable contact, 30 is a coil spring, 31 is a reversing handle, 32
33 is a push button handle, 33 is a slide cam, 33a is a spring piece, 34 is a hooking projection, and 38 is a hooking cam body.

Claims (1)

[Claims] (1) An opening/closing body that is rotatably supported within the vessel body and opens and closes the contact portion, and the head is exposed from the surface of the body and is mounted within the vessel so as to be movable in a direction orthogonal to the exposed surface. a push button switch, comprising a reversing means for reversing the opening/closing body once in conjunction with a push of the push button handle, and a return means installed in the container body for biasing the push button handle in a forward exposing direction; In a piano handle type switch consisting of a piano handle which is rotatably supported at one side on the outside of the push button switch and whose back surface is brought into contact with the head of the push button handle, the reversing means is for the opening/closing body. It is coupled via a coil spring and pivoted to the body so that it can freely see-saw in the direction of rotation of the opening/closing body, and the direction of the rotation axis is parallel to the direction of the rotation axis of the piano handle. Of the reversing handle which has an engaging protrusion formed on the surface on the push button handle side, and the engaging cam body formed at both ends in conjunction with the pushing movement of the push button handle, one of the reversing handles approaches the push button handle due to the inclination of the reversing handle. a synthetic resin slide cam that slides on the back surface of the push button handle in a direction perpendicular to the pushing direction while pressing and engaging the engaging protrusion with an engaging cam body corresponding to the engaging protrusion to apply a reversing rotational force to the reversing handle; A return elastic body is formed integrally with the slide cam, and its free end is connected to the push button handle side, thereby applying a resilient force in the counter-sliding direction to the sliding of the slide cam. A piano handle type switch featuring