JPH0645228U - Piano handle type switch - Google Patents

Abstract

(57) [Summary] [Purpose] To shorten the operation stroke of the piano handle. [Configuration] A switch provided with a piano handle 43. The push button handle 32 is located closer to one end side of the cover 5b than the center of the cover 5b so that the push button handle 32 is located below the pressing operation portion 43a near the end opposite to the pivot side end of the piano handle 43. Move to a different position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a switch having a piano handle type operation handle portion.

[0002]

[Prior art]

 First, the configuration of the entire conventional piano handle type switch will be described. The push button switch 5 shown in FIGS. 30 to 32 has a body formed of a synthetic resin body 5a and a synthetic resin cover 5b, and has a body locking mechanism that hangs from a pair of opposite side surfaces of the cover 5b. The body locking hole 10a provided in the leg 10 is locked to the locking projection 9 of the body 5a to be coupled.

The cover 5b further has locking claws 11a, 11b on both side surfaces thereof, which correspond to a pair of locking holes 8 formed in the longitudinal sides of the both side pieces 2b, 2b of the mounting frame 2 shown in FIG. Each of which is provided as a projecting member, and a space 12 is formed in the back of one of the locking claws 11b for vertically bending the outer wall of the cover 5b to obtain a bending allowance. It is elastically bendable.

Further, connection terminal accommodating portions 13 and 14 are formed on both sides of the body 5 a, and a quick-connect terminal including a common terminal plate 15, a lock spring 16 and a release button 17 is formed in one of the connection terminal accommodating portions 13. The terminal plate 18 and the lock spring 19 that form the first connection terminal part and the terminal plate 20 and the lock spring 21 that form the second connection terminal part are housed in the other connection terminal housing part 14. , And a release button 22 common to the first and second connection terminal portions.

An opening / closing body 24 is arranged in contact with and connected to a support plate 15 a extending from the end of the common terminal plate 15. The terminal plate 18 is provided with an extending piece 18a, which extends over the partition wall 14a and extends into the central storage portion 23. Further, the extending piece 18a is located close to the wall wall 14a side. A fixed contact 25a is provided on the extending piece 18a.

The terminal plate 20 extends along the inner wall of the body 5 a into the central storage portion 23, and its tip is bent along the partition wall of the connection terminal storage portion 13, and the tip of the bent piece 20 a is bent. Is provided with a fixed contact 25b corresponding to the fixed contact 25a. The opening / closing body 24 is formed of a conductive plate and is inserted into the central housing portion 23. The protrusions 28 provided at the lower ends of both ends are fitted into the V-shaped recesses 27 provided on the side walls of the central housing portion 23 so that the lower end edge is formed. Is rotatable about the lower portion of the V-shaped recess 27 while being in contact with the support plate 15a.

Then, the movable contacts 29 provided on both upper surfaces of the opening / closing body 24 are brought into contact with and separated from the fixed contacts 25a and 25b in accordance with the rotation, so that the common connection terminal portion and the first or second contact are connected. It is designed to turn on and off between the connection terminal section. A reversing mechanism configured to reversely drive the opening / closing body 24 includes a coil spring 30, a reversing handle 31, a push button handle 32 and a slide cam 33 shown in FIG. 33, and the like.

A lower portion of the coil spring 30 is locked to a spring seat 24 a provided at an upper edge of a lateral piece of the opening / closing body 24, and an upper portion of the coil spring 30 is integrally provided in a lower portion of the reversing handle 31 in a cylindrical portion 31 a. The opening / closing body 24 is driven to be reversed by being inserted and in response to the movement of the reversing handle 31 in both directions. The reversing handle 31 is inserted into the recess 51 from below into a hole 52 opened at the bottom of the recess 51 of the cover 5b, and the inverted triangular shafts 31c provided on both sides of the lower tubular portion 31a of the reversing handle 31 are attached to the cover 5b. It is rotatably supported by a bearing 50 on the inner wall, and engaging projections 34, 34 engaging with the slide cam 33 are provided on both side upper parts of the rectangular parallelepiped part 31b at the upper part of the reversing handle 31 so as to project.

The push button handle 32 is housed in the recess 51 so as to be vertically movable by locking the locking projections 36, 36 in the vertical locking grooves 35 formed on both inner wall surfaces of the recess 51 of the cover 5b. The push-button handle 32 is provided with a return spring 37, which is formed by integrally extending two return spring pieces 37a, 37a downwardly expanding from the flat piece 37b downwardly. It is attached to the lower surface of the push button handle 32 by inserting a protrusion (not shown) protruding from the lower surface of the return spring 37. Always energized. In this case, the slide cam 33 is attached so that the flat piece 37b is positioned on the lower surface side of the slide cam 33 slidably fitted in the slide cam sliding groove of the lower surface portion of the push button handle 32 described later, and the slide cam 33 does not drop. In addition, the engaging cam body 38 of the slide cam 33, which will be described later, is projected into the hole 37d formed in the flat piece 37b.

As shown in FIG. 32, the slide cam 33 is formed into a substantially rectangular shape by a thermoplastic resin having high elasticity such as polyacetal, and slides in the slide cam sliding groove on the lower surface of the push button handle 32. Can be freely inserted. Further, engaging cam bodies 38 corresponding to the engaging protrusions 34 of the reversing handle 31 are respectively provided on the lower surfaces of both end portions of the slide cam 33 so as to project, and a pair of integrally formed protrusions are formed in a claw shape from one side portion at substantially the central portion. Spring pieces 33a, 33a of the spring button 33a, and a protrusion 32A (Fig. 35 (a)) formed on the lower surface of the push button handle 32 is inserted between the tip ends of the spring pieces 33a, 33a to slide the cam on the lower surface of the push button handle 32. 33 is slidably mounted and the restoring force in the anti-sliding direction is given by the elasticity of the spring pieces 33a, 33a.

In the push button switch 5 configured as described above, the cover 5b is fitted into the window hole 6 of the metal mounting frame 2 shown in FIG. If the end is in contact with the upper surface of the periphery of the cover 5b and is rotated about this contact point as a fulcrum, the locking claw 11a on the fulcrum side is engaged in the locking hole 8 and the vertical side of the other side piece 2b. At the lower end, the locking claw 11b is pushed inward by the bending allowance of the space 12 and the elastic force of the material of the cover 5b to get over the locking claw 11b, and the locking claw 11b is locked in the locking hole 8. The push button switch 5 fixed by locking the locking claws 11a and 11b into the locking holes 8 and 8 causes the push button handle 32 to project from the window hole 6 of the mounting frame 2.

A piano handle 43 is attached to the push button switch 5 thus mounted on the mounting frame 2. As shown in FIG. 33, the piano handle 43 has a fulcrum rib 43a provided on one side edge thereof rotatably locked in a recess 54 on one side portion of the cover 5a, and the other side edge of the piano handle 43. The locking foot 43b formed on the upper side of the cover 5a is mounted in the locking space 47 on the other side of the cover 5a so as to be vertically movable.

By pressing the other side of the piano handle 43, the piano handle 43 can be rotated about the fulcrum rib 43a as a fulcrum. By pushing and rotating the piano handle 43, the push button handle 32 is moved. It can be pushed and driven. Next, the operation of the piano handle type switch will be described with reference to FIGS. 30, 31, and 35 to 38.

First, when the piano handle 43 is pushed down from the state shown in FIG. 35, as shown in FIGS. 35 to 37, the push button handle 32 is pushed down against the return spring piece 37 a, and the push button handle 32 is pushed down to slide the slide cam. 33 is lowered and one side of the slide cam 33 (left side in FIG. 36 (b)) is tilted near the base of the inner inclined surface of the engaging cam body 38 on the upper side of the reversing handle 31 (see FIG. 36 (b)). When the push button handle 32 is further pressed, the engaging protrusion 34 is pushed down along the inner inclined surface of the engaging cam body 38, and the reversing handle 31 is rotated reversely.

In this case, as the reversing handle 31 is reversed by pushing down the push button handle 32, the engaging protrusion 34 rotates counterclockwise as shown in FIG. 37B, and the engaging protrusion 34 causes the engaging protrusion 34 to rotate. The engaging cam body 38 slides to the left as shown in FIG. 37 (b) against the spring piece 33a, and during the reversal of the reversal handle 32, the reversal handle 32 rotates to a position over the horizontal level and the other Even if the engaging protrusion 34 of the upper side is raised, the sliding cam 33 slides to the left side, so that the engaging cam body 38 at the other end (the right side in FIG. 37 (b)) moves to the left side of the right engaging protrusion 34. Since it is located, it does not hinder the reversing rotation of the reversing handle 31.

Here, if the inner inclined surface is formed inside the engaging protrusion 34 of the reversing handle 31, the engaging cam body 38 located inside does not interfere when the engaging protrusion 34 rotates upward. You can escape on the inner slope. Further, as described above, when the reversing handle 31 is reversed and rotated by pushing down the push button handle 32, the reversing handle 31 is reversed while sliding the slide cam 33 against the spring piece 33a of the slide cam 33. Thus, the reversing handle 31 and the slide cam 33 do not receive the sliding friction resistance, and the reversing handle 31 can be smoothly rotated in the reverse direction.

When the reversing handle 31 is rotated in the reverse direction as described above, the coil spring 30 reciprocally swings and the opening / closing body 24 is reversed, so that the movable contact 29 is separated from the one fixed contact point 25a. And contacts the other fixed contact 25b. When the pushing down force of the piano handle 43 is released after this reversal, the push button handle 32 is pushed up by the return spring piece 37a of the return spring 37, and the piano handle 43 also returns to the original state. At the same time, the slide cam 33 also slides back to the central portion by the spring force of the spring piece 33a and becomes as shown in FIG. If the piano handle 43 is pushed down in this state, the opening / closing body 24 can be inverted by the same operation as described above. After this reversal, if the pushing down force of the piano handle 43 is released, the state shown in FIG. 35 is restored.

That is, FIG. 39 shows a state before the piano handle 43 is operated, in which the movable contact 29 of the opening / closing body 22 is in contact with the fixed contact 25b while being inclined. Then, the piano handle 43 is pushed to pass the opening / closing body 24 past the neutral position shown in FIG. 40, and as shown in FIG. 41, the opening / closing body 24 is inverted and comes into contact with the fixed contact 25a. Next, when the push operation on the piano handle 43 is released, the piano handle 43 returns as shown in FIG. 42 as described above.

[0019]

[Problems to be solved by the device]

 By the way, in the piano handle type switch having the above-mentioned structure, the stroke of the tip of the piano handle 43 on the side opposite to the pivot side is approximately twice the stroke of the push button handle 32, and the operation stroke becomes long. However, there is a problem that the operation stroke of the piano handle switch is larger than that of the operation switch of the electronic switch, which causes a feeling of discomfort during operation.

The present invention was devised in view of the above-mentioned problems of the conventional example, and its purpose is to provide a piano handle type in which the operation stroke of the piano handle can be shortened as compared with the conventional case. It is in providing a switch.

[0021]

[Means for Solving the Problems]

 In order to solve the problems of the above-mentioned conventional example and to achieve the object of the present invention, the piano handle type switch of the present invention has a push button handle 32 that receives the force of a push operation and a push button handle 32 in a linear direction. An inversion handle 31 that inverts in response to a movement; a slide cam 33 interposed between the push button handle 32 and the inversion handle 31 to convert the movement of the push button handle 32 in the linear direction into the inversion movement of the inversion handle 31; A reversing mechanism is constituted by a return spring 37 for urging the push button handle 32 in a direction opposite to the pushing direction, and an opening / closing body 24 is provided which is driven by the reversing mechanism to open and close the contacts by the reversing operation. , A switch provided with a piano handle 43, one end of which is supported by the cover 5b to push and operate the push button handle 32 of the reversing mechanism. The push button handle 32 is located so as to be located below the pressing operation portion 43a near the opposite end so that the push button handle 32 is displaced from the center of the cover 5b toward one end side of the cover 5b. To do.

A shaft is hung on the reversing handle 31, a coil spring is fitted on the shaft, and the upper end of the coil spring is elastically contacted with the protruding base of the shaft of the reversing handle 31, and the lower end of the coil spring is It is also preferable to make a structure in which the upper end of the rotatable opening / closing body 24 is elastically contacted.

[0023]

According to the present invention configured as described above, the push button handle 32 is positioned below the pressing operation portion 43a near the end of the piano handle 43 on the opposite side of the pivot side end. By displacing the push button handle 32 from the center of the cover 5b toward one end of the cover 5b, the operation stroke of the piano handle 43 can be shortened.

Then, a shaft 21e is hung on the reversing handle 31, a coil spring 30 is fitted on the shaft 31e, and an upper end portion of the coil spring 30 is elastically contacted with a protruding base portion of the shaft 31e of the reversing handle 31 and a coil is wound. Since the lower end of the spring 30 is elastically contacted with the upper end of the rotatable opening / closing body 24, the width of the reversing handle 31 including the coil spring 30 can be narrowed, and the operation of the piano handle 43 can be performed correspondingly. The stroke can be shortened.

[0025]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Since the basic mechanism of the entire switch is the same as the conventional example, the gist of the present invention will be described in detail. First, the position of the reversing mechanism, the opening / closing body 24, the contacts and the like with respect to the cover 5b and the body 5a, which characterize the present invention, will be described.

The push button handle 32, the reversing handle 31, the slide cam 33, the reversing mechanism including the return spring 37a, the opening / closing body 24, the fixed contacts 25a and 25b, etc. are the body 5a and the cover 5b. In the present invention, as shown in FIGS. 1 and 2, under the pressing operation part 43a near the end opposite to the pivot side end of the piano handle 43 in the present invention. The push button handle 32 is displaced from the center of the cover 5b toward the one end side of the cover 5b so that the push button handle 32 is located at the position. With this, the reversing handle 31, the slide cam 33, and The reversing mechanism including the return bar 37 and the like, the opening / closing body 24, the fixed contacts 25a and 25b, and the like are also displaced from the center of the cover 5b toward one end of the cover 5b. It That is, in the embodiment, in the case where the length of the cover 5b is approximately 44 mm, the push button handle 32 is arranged so as to be displaced so that the length to the center of the push button handle 32 is approximately 10 mm. is there.

In disposing the reversing mechanism and the like in this way, it is necessary to narrow the width of the push button handle 32 and the reversing handle 31. Therefore, in the present invention, the push button handle 32 and the reversing handle 31 are arranged. The structure is as follows to narrow the width. That is, in the present invention, the distance L × S in θ between the engaging protrusions 34 in FIG. 17 is shortened by shortening the distance between the engaging protrusions 34 of the reversing handle 31 shown in FIG. The stroke is shortened and the stroke of the piano handle 43 is shortened. In addition, in the present invention, the reverse handle 31 is not provided with a tubular portion as in the conventional case and the coil spring 30 is fitted into the tubular portion, but as shown in FIG. The coil spring 30 is fitted on the shaft 31e. Therefore, it can be made compact as compared with the conventional one provided with a tubular portion, and in this respect also, there is no problem even if the reversing handle 31 is offset to one end side of the body composed of the body 5a and the cover 5b. ing.

Next, the slide cam 33 will be described. As shown in FIG. 18, the main body of the slide cam 33 has a rectangular plate shape, and engaging cam bodies 38 are provided at both ends. Further, a spring piece 33b having elasticity is provided in an oblique direction from the other side surface of the other end of the rectangular plate-shaped main body portion, and both spring pieces 33b are parallel to each other. In the free state, the tip of each spring piece 33b is set so as to be located at a position ½ in the longitudinal direction of the rectangular plate-shaped main body. Conventionally, as shown in FIG. 33, engaging cam bodies 38 are provided at both ends of a rectangular main body, and a V-shaped spring piece 33a is provided at the center of the main body, and between the V-shaped spring pieces 33a. Although the protrusion 32A is sandwiched, compared to this, as in the present invention, the engaging cam bodies 38 are provided at both ends of the main body portion of the slide cam 33, and the other side surface of the other end portion of the main body portion is slanted in an oblique direction. By providing the spring piece 33b having elasticity toward, the distance between the engaging cam bodies 38 can be shortened, the pressing stroke of the push button handle 32 can be shortened, and the stroke of the piano handle 43 can be shortened.

As shown in FIG. 19, the push button handle 32 has a pressed portion 32 a which is pressed by the lower surface of the piano handle 43 on the upper surface, and a recess 32 d is provided on the lower surface of the push button handle 32. Further, a slide cam housing recess 32b is formed on the bottom of the recess 32d. A spring piece storage recess 32c is further formed in communication with the slide cam storage recess 32b. The slide cam 33 is slidably inserted in the slide cam storage recess 32b. In this case, the two spring pieces 33b are respectively placed in the spring piece storage recesses 32c. In this way, the slide cam holding plate 120 is fitted and mounted in the recess 32d in a state where the slide cam 33 is inserted in the slide cam storage recess 32b.

Leg pieces 32f are provided on both sides of the push button handle 32, and an engaging portion 32g provided at the tip of the leg piece 32f is a cover 5b (details of the cover 5b are shown in FIGS. 20 to 26). ), Which is slidably fitted in a slide groove 5f provided on the cover 5b, and has one end fitted to a return coil spring fitting projection 5h provided in the push button handle insertion recess 5g of the cover 5b. The other end of the coil spring for spring elastically presses the slide cam pressing plate 120. Therefore, the push-button handle 32 is always provided with an upward return spring force by the return coil spring forming the return spring 37a. Here, in the prior art, as the return spring of the push button handle 32, a return spring 37 formed by punching out a leaf spring as shown in FIG. 33 is used, whereas in the present invention, the return spring 37a is constituted by a return coil spring. By doing so, even this amount can be made compact.

Further, in the present invention, as described above, the reversing mechanism including the push button handle 32, the reversing handle 31, the slide cam 33, the return spring 37a, the opening / closing body 24, and the fixed contact 25a. , 25b, etc. are displaced from the center of the body 5a and the cover 5b from one end side, the terminal holes 18b, 20b of the terminal plates 18, 20 are respectively placed at the substantially central portions of the bottom of the body 5a. The terminal hole 15b of the common terminal board 15 is provided on the bottom surface of the end of the body 5a opposite to the side where the opening / closing body 24 is arranged. In this case, since the common terminal 15 and the support plate 15a are separated from each other, they are connected by the jumper wire 123. 27 to 29 show the body 5a.

4 to 9 are operation explanatory views showing the switch changing operation in the piano handle type switch of the present invention, the switch changing operation is the same as the conventional one, and FIG. 4 is a conventional example. 39 of the related art, FIG. 5 corresponds to FIG. 40 of the conventional example, FIG. 6 corresponds to FIG. 41 of the conventional example, and FIG. 7 corresponds to FIG. 42 of the conventional example. 8 and 9 show a state in the middle of contact switching from the state of FIG. 7 to the state of FIG. The operation of this contact switching is the same as that of the conventional example already described, and therefore its description is omitted. 10 to 15 are views showing the position of the sliding cam 33 at each stage of FIGS. 4 to 9 in the present invention. FIG. 10 corresponds to the operation of FIG. 4 and FIG. 12 corresponds to the operation of FIG. 6, FIG. 13 corresponds to the operation of FIG. 7, FIG. 14 corresponds to the operation of FIG. 8, and FIG. 15 corresponds to the operation of FIG. Here, the push button handle 32 is pushed down by pressing the piano handle 43, and the outer surface of the engaging projection 34 located above the reversing handle 31 inclined by the inclined inner surface of the one engaging cam body 38. The inversion handle 31 is rotated while pushing down the inclined surface. Since this operation is the same as that of the conventional example already described, detailed description thereof will be omitted because it is redundant. Then, as is apparent from FIGS. 10 to 15, when the slide cam 33 is in the state of FIGS. 11, 12, 14, and 15, the spring piece 33b elastically contacts the inner wall of the spring piece storage recess 32c. Since the force is accumulated, the push button handle 32 is released from the push button handle 32 and the push button handle 32 rises, and when the engaging cam body 38 separates from the engaging protrusion 34, the spring force of the spring piece 33a causes the original position (that is, It returns to the position shown in FIGS. 10 and 13.

[0033]

[Effect of device]

 As described above, the present invention is provided with the opening / closing body that is driven by the reversing mechanism to open and close the contacts by the reversing operation, and is provided with the piano handle whose one end is supported by the cover to push and operate the push button handle of the reversing mechanism. In the switch, the push button handle is displaced from the center of the cover toward one end side of the cover so that the push button handle is located below the pressing operation part near the end opposite to the pivot side end of the piano handle. Since it is positioned so that the stroke of the piano handle can be made closer to the stroke of the push button handle, the operation stroke of the piano handle can be shortened compared to the past, and the operability is improved.

Further, a shaft is hung on the reversing handle, a coil spring is fitted on this shaft, the upper end of the coil spring is elastically contacted with the protruding base of the shaft of the reversing handle, and the lower end of the coil spring is rotated. Since it is elastically contacted with the upper end of the flexible opening / closing body, the width of the reversing handle can be narrowed, and even if the reversing mechanism is biased toward one end side of the cover, the arrangement of the reversing handle can be prevented. It is a thing.

[Brief description of drawings]

FIG. 1 is a sectional view of an entire piano handle type switch according to an embodiment of the present invention.

FIG. 2 is an overall sectional view of a state in which the piano handle is pressed to switch the contacts.

FIG. 3 is a side sectional view of the above.

FIG. 4 is an operation explanatory view showing the contact switching operation of the above.

FIG. 5 is an operation explanatory view showing the contact switching operation of the above.

FIG. 6 is an operation explanatory view showing the contact switching operation of the above.

FIG. 7 is an operation explanatory view showing the contact switching operation of the above.

FIG. 8 is an operation explanatory view showing the contact switching operation of the above.

FIG. 9 is an operation explanatory view showing the contact switching operation of the above.

FIG. 10 is an operation explanatory view showing a sliding operation of the above slide cam.

FIG. 11 is an operation explanatory view showing a sliding operation of the above slide cam.

FIG. 12 is an operation explanatory view showing a sliding operation of the above slide cam.

FIG. 13 is an operation explanatory view showing a sliding operation of the above slide cam.

FIG. 14 is an operation explanatory view showing a sliding operation of the above slide cam.

FIG. 15 is an operation explanatory view showing a sliding operation of the above slide cam.

FIG. 16 shows an inversion handle used in the same as above, (a) is a plan view, (b) is a front view, and (c) is a side view.

FIG. 17 is an explanatory diagram showing a tilted state of a reversing handle used in the above.

FIG. 18 shows a slide cam used for the same as above, (a) is a plan view, (b) is a front view, and (c) is a side view.

FIG. 19 shows a push button handle used in the same as above, (a) is a plan view, (b) is a sectional view, and (c) is a partially broken side view.

FIG. 20 is a plan view of the same cover.

FIG. 21 is a left side view of the above cover.

FIG. 22 is a right side view of the above cover.

FIG. 23 is a partially cutaway right side view of the above cover.

FIG. 24 is a partially cutaway front view of the above cover.

FIG. 25 is a bottom view of the above cover.

FIG. 26 is a front view of the above cover.

FIG. 27 is a plan view of the same body.

FIG. 28 is a cross-sectional view of the same body.

FIG. 29 is a bottom view of the body 1 of the above.

FIG. 30 is a sectional view of a conventional push button switch.

FIG. 31 is a sectional view of a conventional push button switch.

FIG. 32 is a partial exploded perspective view of a conventional example.

FIG. 33 is an exploded perspective view of another portion of the conventional example.

FIG. 34 is a perspective view of the attachment frame of the above.

35 (a) and (b) are operation explanatory views of a conventional example.

36 (a) and (b) are operation explanatory views of a conventional example.

37 (a) and (b) are operation explanatory views of a conventional example.

38 (a) and 38 (b) are operation explanatory views of a conventional example.

FIG. 39 is an explanatory diagram of a conventional example.

FIG. 40 is an explanatory diagram of a conventional example.

FIG. 41 is an explanatory diagram of a conventional example.

FIG. 42 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 5 Push Button Switch 5b Cover 24 Opening / Closing Body 31 Inversion Handle 32 Push Button Handle 33 Slide Cam 33a Spring Piece 34 Engagement Protrusion 37a Return Spring 38 Engagement Cam Body 43 Piano Handle

Claims (2)

[Scope of utility model registration request] 1. A push button handle that receives the force of a push operation, an inversion handle that inverts in accordance with the movement of the push button handle in the linear direction, and a push button handle that is interposed between the push button handle and the inversion handle and that moves in the linear direction of the push button handle. A reversing mechanism is composed of a slide cam that converts the movement into a reversing movement of the reversing handle and a return spring that urges the push button handle in the direction opposite to the pushing operation direction. The reversing mechanism is driven by the reversing mechanism. In a switch provided with an opening / closing body for opening and closing contacts, a piano handle supported by a cover to push and operate the push button handle of the reversing mechanism, an end of the piano handle opposite to the pivot side end The push button handle should be positioned so that the push button handle is located below the vicinity of the pressing operation part, and is offset from the center of the cover toward one end side of the cover. Piano handle type switch characterized by. 2. A shaft is hung on the reversing handle, a coil spring is fitted on the shaft, the upper end of the coil spring is elastically contacted with the protruding base of the reversing handle shaft, and the lower end of the coil spring is rotatable. 2. The piano handle type switch according to claim 1, wherein the switch is elastically contacted with an upper end portion of the opening / closing body.