JP2015018605A - Piano handle-type switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piano handle-type switch more improved in quietness.SOLUTION: A piano handle-type switch 10 comprises: a body 5 including a push-button handle 32; a piano handle 43 of which one end portion is pivoted at a front side of the body 5 and which is abutted to the push-button handle 32; a return spring 37 for energization opposite to a push-operation direction of the push-button handle 32; a switch mechanism part 40 for opening/closing a contact each time a push operation of the push-button handle 32 is performed; an inversion handle 31 which can be rocked inside of the return spring 37; and an inversion mechanism part 41 for rocking the inversion handle 31 alternately oppositely each time the push operation of the push-button handle 32 is performed. The inversion mechanism part 41 includes: a slide cam 33 which is disposed between the push-button handle 32 and the inversion handle 31 and moves in such a manner that the push-button handle 32 pushes only one side of the inversion handle 31; and a metallic spring piece 33a, outside of the slide cam 33, for energization opposite to a moving direction of the slide cam 33.

Description

  The present invention relates to a piano handle type switch that reverses a contact point by pushing a piano handle.

  2. Description of the Related Art Conventionally, a piano handle type switch that reverses a contact point by pressing a piano handle has been provided.

  It is known that this kind of piano handle type switch can use, for example, the configuration of a push button type switch device shown in FIG. 15 (see Patent Document 1).

  The push button switch device of Patent Document 1 includes a container body 301 and a lid body 302. The push button type switch device includes an operation body 310 that is attached to the lid 302 and can be pushed and restored. In the push button switch device, a push button 314 is attached to the operation body 310. The push button switch device includes a terminal member 303, a release button 304, a fixed contact member 305, a movable contact support terminal 306, and a movable contact member 307 that is swingably supported by the movable contact support terminal 306. Is incorporated. The fixed contact member 305 is provided with a fixed contact 305a. The movable contact member 307 is provided with a movable contact 307a. The movable contact member 307 is swingably supported by the movable contact support spring portion 306a of the movable contact support terminal 306. In the push button type switch device, the movable contact 307a contacts or separates from the fixed contact 305a as the movable contact member 307 swings.

  In the push-button switch device, the converter 313 and the movable contact member 307 form a link mechanism, and the movable contact member 307 also swings in conjunction with the swing of the converter 313. In the push button type switch device, a coil spring 315 is disposed on the inner bottom of the body 301, and the movable contact member 307 and the converter 313 are urged toward the lid 302 by the coil spring 315. In the push button type switch device, the link mechanism formed by the converter 313 and the movable contact member 307 constitutes a toggle mechanism by the biasing force of the coil spring 315.

  The push button switch device of Patent Document 1 includes an operation body 310, a slide drive body 311, an urging member 312, and a converter 313, and has a contact opening / closing mechanism that swings a movable contact member 307. In the push button type switch device, the urging member 312 has a configuration in which an operating body urging spring portion 312b and a slide drive urging spring portion 312c are formed integrally with the substrate 312a. The biasing member 312 biases the operating body 310 in the restoring movement direction by the operating body biasing spring portion 312b. The slide drive body urging spring portion 312c is engaged with both end faces of the slide drive body 311 and urges the slide drive body 311 almost equally from both sides. The push button switch device can return the slide driver 311 to the neutral position by the biasing force of the slide driver biasing spring portion 312c.

Japanese Patent Laid-Open No. 11-162292

  By the way, in the push button type switch device, an operation sound may be generated in accordance with the movement of the slide driver 311 due to the pressing operation of the push button 314. The piano handle switch is required to be more excellent in quietness, and it is not sufficient to use the configuration of the above-described push button switch device, and further improvement is required.

  The present invention has been made in view of the above-mentioned reasons, and an object thereof is to provide a piano handle switch that is more silent.

  The piano handle switch according to the present invention includes a body having a push button handle to be pushed on the front side, and is disposed in front of the body so as to cover the front side of the body. A piano handle whose rear surface is in contact with the push button handle, a return spring that is housed in the container and biases the push button handle in a direction opposite to the direction in which the push button handle is pushed, and the instrument. A switch mechanism that is housed in the body and that opens and closes a contact for each pressing operation of the push button handle, a reversing handle that can be swung inside the return spring, and a reversing handle that is alternately opposed each time the push button handle is pressed. A piano handle switch having a reversing mechanism that swings in a direction, wherein the reversing mechanism is disposed between the push button handle and the reversing handle. A slide cam that slides along a direction perpendicular to the direction of the push operation so that only one side of the reversing handle can be pushed, and a direction in which the slide cam slides provided on the outside of the slide cam And a metal spring piece for urging the slide cam in the opposite direction.

  The piano handle type switch of the present invention can be configured to be more silent.

FIG. 1 is an exploded perspective view showing the piano handle type switch of the present embodiment. FIG. 2 is a cross-sectional view showing the piano handle type switch of the present embodiment. FIG. 3 is a perspective view showing a main part of the piano handle type switch of the present embodiment. FIG. 4 is a bottom view showing a main part of the piano handle switch according to the present embodiment. FIG. 5 is a bottom view showing another main part of the piano handle type switch of the present embodiment. FIG. 6 is a perspective view showing the piano handle type switch of the present embodiment. FIG. 7 is a plan view showing the piano handle type switch of the present embodiment. FIG. 8 is a front view showing the piano handle type switch of the present embodiment. FIG. 9 is a bottom view showing the piano handle type switch of the present embodiment. FIG. 10 is a right side view showing the piano handle type switch of the present embodiment. FIG. 11 is an exploded perspective view in a usage pattern using the piano handle type switch of the present embodiment. 12A and 12B show the main part of the piano handle switch according to the present embodiment, in which FIG. 12A is a cross-sectional explanatory view before the piano handle is attached, and FIG. 12B is a cross-sectional explanatory view after the piano handle is attached. FIG. 13 is an operation explanatory diagram for explaining the operation of the piano handle switch according to the present embodiment. FIG. 14 is another operation explanatory diagram illustrating the operation of the piano handle switch according to the present embodiment. It is a disassembled perspective view of the conventional push button type switch apparatus.

  The piano handle type switch 10 of this embodiment is demonstrated based on FIG. 1 thru | or FIG. In addition, in the figure, the same number is attached | subjected with respect to the same member, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 1 and 2, the piano handle switch 10 according to the present embodiment includes a body 5 in which a push button handle 32 to be pushed is provided on the front side. The piano handle type switch 10 includes a piano handle 43 that is disposed in front of the instrument body 5 so as to cover the front side of the instrument body 5, one end is pivotally attached to the instrument body 5, and the rear surface abuts on the push button handle 32. ing. The piano handle type switch 10 is provided with a return spring 37 that energizes the push button handle 32 in a direction opposite to the direction in which the push button handle 32 is pushed and operated. The piano handle type switch 10 includes a switch mechanism 40 that is housed in the body 5 and opens and closes the contact 100 each time the push button handle 32 is pressed. The piano handle type switch 10 includes a reversing handle 31 that can swing inside the return spring 37. The piano handle switch 10 includes a reversing mechanism unit 41 that alternately swings the reversing handle 31 in the opposite direction each time the push button handle 32 is pushed.

  The reversing mechanism unit 41 is disposed between the push button handle 32 and the reversing handle 31 and extends in a direction perpendicular to the direction in which the push button handle 32 is pushed so that only one side of the reversing handle 31 can be pushed. And a slide cam 33 that slides. The reversing mechanism unit 41 includes a metal spring piece 33 a that is provided outside the slide cam 33 and urges the slide cam 33 in a direction opposite to the direction in which the slide cam 33 slides.

  Thereby, the piano handle type switch 10 of this embodiment has an effect that it becomes possible to set it as the structure excellent in silence.

  Hereinafter, a more specific configuration of the piano handle type switch 10 of the present embodiment will be described.

  As shown in FIG. 11, the piano handle switch 10 according to the present embodiment can be used by being attached to a mounting frame 2 installed on a construction surface (not shown) such as a wall surface of a building. .

  The piano handle switch 10 according to the present embodiment includes a switch body 1 that includes a push button handle 32 and reverses the contact 100 for each pressing operation. Note that the push button handle 32 is an unevenness provided on the surface side of the push button handle 32 and suitably displays figures and characters that suggest the installation direction of the switch body 1. The piano handle type switch 10 is disposed so as to face the front surface of the switch body 1 (upper side of the paper surface of FIG. 1), and one end portion is pivotally attached to the switch body 1 and the push button handle 32 can be pushed in. It has. The piano handle switch 10 includes a switch body 1 having a rectangular parallelepiped body 5. The container body 5 is held by the mounting frame 2. The mounting frame 2 has a rectangular frame shape and has a window hole 2a for mounting an instrument. The mounting frame 2 includes a plate frame 120 having an opening window 120a that is longer and wider than the window hole 2a of the mounting frame 2 and a decorative plate 130 having an opening window 130a on the front side of the mounting frame 2. It is configured so that it can be placed. The mounting frame 2 includes three pairs of instrument mounting holes 2 b and 2 b in the longitudinal direction of the mounting frame 2.

  The piano handle type switch 10 has a size of the module 5 corresponding to three modules of one module of the embedded wiring device. The container body 5 includes a cover body 5a and a body body 5b. The body 5b is formed in a bottomed rectangular tube-shaped outer shape with an open front surface. The body 5b can be formed of a synthetic resin molded product. The cover body 5a is formed in a bottomed rectangular tube-shaped outer shape with an open rear surface coupled to the front surface side of the body body 5b. The cover body 5a can be formed of a synthetic resin molded product. The cover body 5a extends the assembly piece 3 backward from the edge of both side walls in the short direction of the cover body 5a. The body body 5b includes assembly protrusions 6 that can be coupled to the assembly holes 4 of the cover body 5a on both side surfaces of the body body 5b in the short direction. The assembly protrusion 6 is provided with an inclined surface 6a having a projecting dimension from the body 5b that is smaller toward the cover 5a. The assembly protrusion 6 is configured such that the assembly piece 3 can be coupled to the assembly protrusion 6 by covering the body 5b with the cover body 5a. The container body 5 can couple | bond the body body 5b and the cover body 5a by engaging the assembly hole 4 provided in the assembly piece 3 of the cover body 5a, and the assembly protrusion 6 of the body body 5b.

  In the piano handle type switch 10 of the present embodiment, the dimension of the container body 5 in the short direction is approximately one third of the dimension in the longitudinal direction of the window hole 2a of the mounting frame 2. Further, the container body 5 has the longitudinal dimension of the container body 5 substantially equal to the lateral dimension of the window hole 2 a of the mounting frame 2. The container body 5 has a pair of mounting claws 11a and 11a that can be engaged with a pair of instrument mounting holes 2b and 2b provided in a portion surrounding the window hole 2a of the mounting frame 2 on one side surface in the longitudinal direction of the cover body 5a. (See FIGS. 2, 7 and 10). Similarly, the container body 5 has a pair of mounting claws that can be engaged with a pair of instrument mounting holes 2b, 2b provided in a portion surrounding the window hole 2a of the mounting frame 2 on the other side surface in the longitudinal direction of the cover body 5a. 11b and 11b are projected (see FIGS. 1, 2 and 7). The piano handle type switch 10 is configured such that the switch body 1 can be attached to the attachment frame 2 by engaging the attachment claws 11 a and 11 b of the body 5 with the instrument attachment hole 2 b of the attachment frame 2. The cover body 5a includes a pair of cut grooves 11c and 11c on one side wall in the longitudinal direction of the cover body 5a (see FIG. 10). The cover body 5a includes a bending piece 11d having flexibility in the thickness direction of the side wall between the pair of cut grooves 11c and 11c. The cover body 5a is capable of elastically deforming the mounting claw 11a to the inside of the cover body 5a by bending the bending piece 11d to the inside of the cover body 5a.

  When the piano handle switch 10 is mounted on the mounting frame 2, the piano handle switch 10 first inserts the mounting claw 11 b of the cover body 5 a into the instrument mounting hole 2 b of the mounting frame 2. Next, the piano handle type switch 10 attaches the switch body 1 to the mounting frame 2 by deforming the mounting claw 11a opposite to the mounting claw 11b and inserting the body 5 into the window hole 2a of the mounting frame 2. Can do. Further, in the piano handle type switch 10, if the bending piece 11d is pushed into the inside of the cover body 5a, the attachment claw 11a comes out of the instrument attachment hole 2b. The piano handle switch 10 can be detached from the mounting frame 2 by removing the mounting claw 11b from the instrument mounting hole 2b in a state where the mounting claw 11a is removed from the instrument mounting hole 2b. The switch body 1 is provided with a pushing projection 11e that makes it easy to push the bending piece 11d into the bending piece 11d.

  The body 5b divides the internal space of the body 5b into three chambers in the longitudinal direction of the body 5b (see FIGS. 1 and 2). In the body body 5b, the compartments on both sides in the longitudinal direction of the body body 5b constitute terminal storage chambers 13 and 14, respectively. The terminal storage chamber 13 stores a terminal portion having a first terminal plate 15, two lock springs 16 and 16, and a release button 17. The terminal accommodating chamber 14 accommodates a terminal portion having a second terminal plate 18, a third terminal plate 22, two lock springs 19 and 19, and a release button 21. In the body 5b, a central portion in the longitudinal direction of the body 5b constitutes a central storage chamber 23 in which the switch mechanism portion 40 is stored. The body body 5b has a pair of wire insertion openings 13a and 13a extending through the terminal storage chamber 13 of the body body 5b on the bottom surface side (see FIGS. 2 and 9). The body 5b has a release hole 13b penetrating in the vicinity of the pair of wire insertion openings 13a and 13a. Similarly, the body body 5b has a pair of wire insertion openings 14a, 14a penetrating through the terminal storage chamber 14 of the body body 5b on the bottom surface side. The body 5b has a release hole 14b provided in the vicinity of the pair of wire insertion openings 14a and 14a.

  The locking spring 16 has a central piece 16c, a locking piece 16a provided at one end of the central piece 16c, and a contact piece 16b provided at the other end of the central piece 16c. The locking piece 16a is bent in a J-shape, and is inclined so that the distance from the central piece 16c increases from the connecting portion with the central piece 16c toward the tip. The contact piece 16b is bent in an S shape and has elasticity in the thickness direction of the center piece 16c. Similarly, the locking spring 19 includes a central piece 19c, a locking piece 19a provided at one end of the central piece 19c, and a contact piece 19b provided at the other end of the central piece 19c. Yes. The locking piece 19a is bent in a J shape, and is inclined so as to increase the distance from the central piece 19c toward the tip from the connecting portion with the central piece 19c. The contact piece 19b is bent in an S shape and has elasticity in the thickness direction of the central piece 19c. The lock springs 16 and 19 can be formed by bending a conductive metal material having elasticity. The lock springs 16 and 19 can be made of a metal material such as copper or a copper alloy, for example, as the material of the lock springs 16 and 19.

  The first terminal plate 15 includes a connecting piece 15a, a pressure contact piece 15b connected to the connection piece 15a, and a contact piece 15c connected to the connection piece 15a and facing the pressure contact piece 15b. The locking spring 16 has a flat central plate 16c, contacts the contact piece 15c of the first terminal plate 15, and opposes the locking piece 16a and the contact piece 16b to the pressure contact piece 15b. Arrange. The switch body 1 can be inserted between the locking piece 16a and the contact piece 16b of the locking spring 16 and the pressure contact piece 15b of the first terminal plate 15 so that the electric wire introduced into the electric wire insertion port 13a can be inserted. The positional relationship between the first terminal plate 15 and the lock spring 16 and the wire insertion port 13a is set.

  Accordingly, when the electric wire is inserted into the electric wire insertion port 13b of the container body 5, the switch body 1 presses the electric wire between the locking piece 16a and the contact piece 16b and the press contact piece 15b of the first terminal plate 15. And pinch. The switch body 1 is secured by the leading end of the locking piece 16a biting into the core of the electric wire. The switch body 1 electrically connects the core wire of the electric wire and the first terminal plate 15 by the locking piece 16a and the contact piece 16b. The switch body 1 can connect an electric wire by using the spring force of the lock spring 16 without using a terminal screw. That is, the lock spring 16 and the first terminal plate 15 constitute a quick-connect terminal that is electrically and mechanically connected to the electric wire by inserting the core wire of the electric wire from which the insulation coating has been removed. doing.

  The second terminal plate 18 includes a connecting piece 18a, a pressure contact piece 18b connected to the connection piece 18a, and a contact piece 18c connected to the connection piece 18a and facing the pressure contact piece 18b. The second terminal board 18 can be formed by bending a conductive metal material having elasticity. The 2nd terminal board 18 can be comprised by metal materials, such as copper and a copper alloy, as a material of the 2nd terminal board 18, for example.

  The locking spring 19 has a central piece 19c of the locking spring 19 that is flat, contacts the contact piece 18c of the second terminal plate 18, and faces the locking piece 19a and the contact piece 19b to the pressure contact piece 18b. Arrange. In the switch body 1, an electric wire introduced into one electric wire insertion port 14 a can be inserted between the locking piece 19 a and the contact piece 19 b of the locking spring 19 and the pressure contact piece 18 b of the second terminal plate 18. As described above, the positional relationship between the second terminal plate 18 and the lock spring 19 and one of the wire insertion openings 14a is set.

  When the electric wire is inserted into one electric wire insertion port 14 a of the container body 5, the switch body 1 presses the electric wire between the locking piece 19 a and the contact piece 19 b and the press-contacting piece 18 b of the second terminal plate 18. And pinch. The switch body 1 constitutes a quick-connect terminal that performs electrical connection and mechanical connection between the core wire of the electric wire and the second terminal plate 18 by the locking piece 19a and the contact piece 19b.

  The third terminal plate 22 includes a connection piece 22a, a pressure contact piece 22b connected by the connection piece 22a, and a contact piece 22c connected by the connection piece 22a and facing the pressure contact piece 22b. The third terminal board 22 can be formed by bending a conductive metal material having elasticity. The 3rd terminal board 22 can be comprised by metal materials, such as copper and a copper alloy, as a material of the 3rd terminal board 22, for example.

  In the locking spring 26, the central piece 26c of the locking spring 26 has a flat plate shape, contacts the contact piece 22c of the third terminal plate 22, and opposes the locking piece 26a and the contact piece 26b to the pressure contact piece 22b. Arrange. In the switch body 1, the electric wire introduced into the other electric wire insertion port 14 a can be inserted between the locking piece 26 a and the contact piece 26 b of the locking spring 26 and the pressure contact piece 22 b of the third terminal plate 22. In this way, the positional relationship between the third terminal plate 22 and the lock spring 26 and the other wire insertion port 14a is set.

  When the electric wire is inserted into the other electric wire insertion port 14 a of the container body 5, the switch body 1 presses the electric wire between the locking piece 26 a and the contact piece 26 b and the press-contacting piece 22 b of the third terminal plate 22. And pinch. The switch body 1 constitutes a quick-connect terminal that performs electrical connection and mechanical connection between the core wire of the electric wire and the third terminal plate 22 by the locking piece 26a and the contact piece 26b.

  The release button 17 is stored in the terminal storage chamber 13 of the body body 5b so that the rear portion of the release button 17 faces the release hole 13b. The release button 17 allows a part of the release button 17 to come into contact with the lock piece 16 a of the lock spring 16. The switch body 1 is configured such that when the release button 17 is pushed through the release hole 13b, the locking piece 16a is pulled away from the pressure contact piece 15b of the first terminal plate 15 and the electric wire is pulled out. The release button 17 is disposed so as to straddle each pair of lock springs 16 corresponding to the first terminal plate 15. The release button 17 is configured to be able to simultaneously press the locking pieces 16 a of the two locking springs 16, 16 corresponding to the first terminal plate 15.

  Similarly, the release button 21 is housed in the terminal housing chamber 14 of the body 5b so that the rear portion of the release button 21 faces the release hole 14b. The release button 21 allows a part of the release button 21 to be in contact with the lock piece 19 a of the lock spring 19 and the lock piece 26 a of the lock spring 26. When the release button 21 is pushed through the release hole 14b, the release button 21 can pull the locking piece 19a away from the press-contacting piece 18b of the second terminal plate 18 and pull out the electric wire from one electric wire insertion port 14a. It is configured. Further, when the release button 21 is pushed through the release hole 14b, the release button 21 pulls the locking piece 26a away from the pressure contact piece 22b of the third terminal plate 22 and pulls out the electric wire from the other electric wire insertion port 14a. Is configured to be possible. The release button 21 is disposed so as to straddle the lock springs 19 and 26 corresponding to the second terminal plate 18 and the third terminal plate 22, respectively. The release button 21 can simultaneously press the locking piece 19 a of the locking spring 19 corresponding to the second terminal plate 18 and the locking piece 26 a of the locking spring 26 corresponding to the third terminal plate 22. It is configured as follows. The release button 17 and the release button 21 can be formed using, for example, a thermosetting resin such as urea resin as the material of the release button 17 and the release button 21. Further, the release button 17 and the release button 21 can be pushed by the tip of a tool such as a flathead screwdriver.

  In the switch body 1, the connecting piece 18 a of the second terminal plate 18 is accommodated in the terminal accommodating chamber 14, and the contact holding piece 18 d formed integrally with the second terminal plate 18 is inserted into the central accommodating chamber 23. . The second terminal plate 18 is provided with a fixed contact 25 (hereinafter also referred to as a first fixed contact 25 a) at the tip of the contact holding piece 18 d in the central storage chamber 23. Further, the switch body 1 stores the connecting piece 22 a of the third terminal plate 22 in the terminal storage chamber 14, and the contact holding piece 22 d formed integrally with the third terminal plate 22 in the central storage chamber 23. insert. The third terminal plate 22 is provided with a fixed contact 25 (hereinafter also referred to as a second fixed contact 25 b) at the tip of the contact holding piece 22 d in the central storage chamber 23.

  The first terminal plate 15 includes a support piece 15e disposed along the inner peripheral surface of the rear wall of the central storage chamber 23 at the tip of the connecting piece 15d. The first terminal plate 15 is formed with a connecting piece 15d so as to be positioned closer to the pressure contact piece 15b than the contact piece 15c. The first terminal plate 15 has an insulation distance between the contact piece 15d and the contact holding piece 18d disposed in the central storage chamber 23 by making the connection piece 15d closer to the pressure contact piece 15b than the contact piece 15c. It is relatively large. In the first terminal board 15, the rear end edge 24b of the switch 24 abuts on the support piece 15e. The opening / closing element 24 has protrusions 28 protruding from both side edges of the opening / closing element 24. The opening / closing element 24 has a protrusion 28 inserted in a V-shaped position restricting recess 27 provided in the central storage chamber 23 and having a wide front end (see FIG. 2). The opening / closing element 24 is rotatable within the range of the position restricting recess 27 with the rear edge as a fulcrum in a state where the rear edge 24b is in contact with the support piece 15e. The switch 24 is disposed so as to face the contact holding piece 18d, and a movable contact 29 (hereinafter referred to as the contact 100) together with the first fixed contact 25a at a portion facing the first fixed contact 25a provided on the contact holding piece 18d. , Also referred to as a first movable contact 29a). In the piano handle switch 10, when the switch 24 rotates, the first movable contact 29 a contacts and separates from the first fixed contact 25 a, and the first terminal plate 15 and the second terminal plate 18 are electrically connected. The state to be automatically closed and the state to be opened can be selected. Further, in the piano handle switch 10, the switch 24 is disposed so as to face the contact holding piece 22d, and the contact with the second fixed contact 25b provided on the contact holding piece 22d is a contact point together with the second fixed contact 25b. A movable contact 29 (hereinafter also referred to as a second movable contact 29b) constituting 100 is provided. In the piano handle type switch 10, when the switch 24 rotates, the second movable contact 29 b contacts and separates from the second fixed contact 25 b, and the first terminal board 15 and the third terminal board 22 are electrically connected. The state to be automatically closed and the state to be opened can be selected.

  By the way, in the piano handle type switch 10, the contact 100 constitutes a switch mechanism 40 together with the reversing spring 30 and the reversing handle 31 that are used for turning the switch 24. The reversing spring 30 constitutes a compression coil spring. The reversing spring 30 is inserted with a spring seat piece 24 a protruding from the front edge of the switch 24 at the rear end of the reversing spring 30. The reversing spring 30 is housed in a cylindrical portion 31 a having a front end portion of the reversing spring 30 provided on the reversing handle 31 and having a rear opening. The reversing handle 31 is exposed to the front side of the cover body 5a through a through hole 52 penetrating the bottom wall of the recess 51 provided on the front surface of the cover body 5a.

  Further, the reversing handle 31 is provided with triangular prism-shaped fulcrum protrusions 31 b that taper on the front end side of the reversing handle 31 on both side surfaces of the middle portion of the reversing handle 31. The reversing handle 31 is pivotally supported by a bearing portion 50 formed on both side edges of the through hole 52 of the cover body 5a and opened rearward, and is swingably attached to the cover body 5a. The piano handle type switch 10 inserts the front end portion of the reversing handle 31 into the through hole 52 of the cover body 5a from the rear, and inserts the fulcrum protrusion 31b into the bearing portion 50 of the cover body 5a. The reversing handle 31 can be made swingable. In the piano handle type switch 10, an inversion handle 31 and an opening / closing element 24 are connected via an inversion spring 30. In the piano handle type switch 10, the reversing spring 30 is compressed most in the middle of the swinging range by the swinging of the reversing handle 31. In the piano handle switch 10, the direction of the spring force acting on the opening / closing element 24 from the reversing spring 30 is reversed before and after the position where the reversing spring 30 is most compressed, and the opening / closing element 24 is moved by the spring force of the reversing spring 30. To do.

  The reversing handle 31 is provided with a pair of engaging projections 34, 34 that are engaged with the slide cam 33 on both sides of the reversing handle 31 exposed to the front side of the cover body 5 a through the through hole 52. The piano handle type switch 10 is configured so that the slide cam 33 slides along the back surface of the push button handle 32 corresponding to the position of the reversing handle 31 when the push button handle 32 provided on the cover body 5a is pushed. .

  The push button handle 32 includes guide protrusions 36 that protrude from the rear ends of both outer side surfaces in the longitudinal direction. The piano handle type switch 10 inserts the guide protrusion 36 of the push button handle 32 into the guide groove 35 formed along the front-rear direction (vertical direction in FIG. 1) in the rear part of the inner peripheral surface of both sides of the recess 51 of the cover body 5a. By doing so, it is movable in the front-rear direction and is prevented from being pulled forward. The push button handle 32 has a protrusion 32 d protruding from the rear surface of the push button handle 32. The push button handle 32 attaches the return spring 37 to the rear surface of the push button handle 32 by inserting a protrusion 32d into a hole 37d drilled in a flat piece 37b of a return spring 37 made of a leaf spring. In the piano handle switch 10, the push button handle 32 is urged forward by the tip of the return spring piece 37a of the return spring 37 being in elastic contact with the bottom surface of the recess 51.

  The slide cam 33 can be formed into an O-shape with a thermoplastic resin rich in elasticity such as polyacetal. The slide cam 33 has a hooking cam body 38 corresponding to the hooking protrusion 34 of the reversing handle 31 protruding from the side portion of the slide cam 33. The slide cam 33 is provided on the outside of the slide cam 33, and a metal spring piece 33 a that urges the slide cam 33 in a direction opposite to the sliding movement direction of the slide cam 33 and the outside of the slide cam 33. Touching. The spring piece 33a has a C-shaped base part 33a1 in plan view, a standing part 33a2 standing from each base end side opposite to the distal end of the base part 33a1, and a direction approaching each other provided on each standing part 33a2. And a pair of extending portions 33a3 and 33a3 (see FIGS. 3 and 4). In the spring piece 33a, a pair of extending portions 33a3 and 33a3 are in contact with a side end portion of the slide cam 33 which is separated from the base portion 33a1 of the spring piece 33a. The spring piece 33a has a semicircular hook shape at the tip of each extending portion 33a3. The spring piece 33a has a semicircular hook shape at the tip of each extending portion 33a3, so that even if the slide cam 33 slides, the tip portion of each extending portion 33a3 urges the side end of the slide cam 33. It is configured to be able to hold. The spring piece 33a is fixed to the push button handle 32 by inserting a boss 32b protruding from the push button handle 32 into a through hole 33ba provided in the base portion 33a1 and melting a part of the boss 32b. The spring piece 33a is provided with a through hole 33bb in the base portion 33a1 through which the boss 32c protruding from the push button handle 32 can be inserted. The spring piece 33a is formed by bending a metal material. The piano handle type switch 10 holds the slide cam 33 and the spring piece 33a between the push button handle 32 and the return spring 37 (see FIG. 5). The return spring 37 is fixed to the push button handle 32 via a metal spring piece 33a by melting a part of the boss 32c of the push button handle 32 that passes through the through hole 37bb of the return spring 37.

  In the piano handle type switch 10 of the present embodiment, the slide cam 33 and the spring piece 33a are configured separately. Since the piano handle switch 10 has the slide cam 33 and the spring piece 33a as separate bodies, the spring piece 33a has a lower rigidity than the slide cam 33, and the deformation distortion of the spring piece 33a is kept small. It becomes possible to design. Since the piano handle type switch 10 includes the slide cam 33 and the spring piece 33a as separate bodies, the slide handle 33 and the spring piece 33a can be designed to keep the deformation distortion of the spring pieces 33a small. The piano handle type switch 10 has a design in which the deformation distortion of the spring piece 33a is kept small separately from the slide cam 33, so that the spring handle 33a and the slide cam 33 are integrally formed. It becomes possible to extend the life of the piece 33a. In addition, the piano handle type switch 10 of the present embodiment is designed to suppress the deformation strain of the spring piece 33a separately from the slide cam 33, thereby reducing the sound generated by the deformation of the spring piece 33a. It becomes. Furthermore, the piano handle type switch 10 of the present embodiment suppresses the sound generated according to the speed of the spring piece 33a by being designed to suppress the deformation strain of the spring piece 33a separately from the slide cam 33. Is possible.

  That is, in the piano handle switch 10 of the present embodiment, the metal spring piece 33a is provided separately from the slide cam 33 outside the slide cam 33, so that the spring piece 33a can be configured with low stress. . In the piano handle switch 10 of the present embodiment, the spring piece 33a is provided outside the slide cam 33 and separately from the slide cam 33, so that the piano handle 43 can be designed to move with low pressure. Further, in the piano handle type switch 10 of the present embodiment, since the spring piece 33a is provided separately from the slide cam 33 outside the slide cam 33, the occurrence of abnormal noise is reduced with low distortion and low speed. And a long life can be achieved.

  In the piano handle switch 10 of the present embodiment, the spring piece 33a is provided separately from the slide cam 33 outside the slide cam 33, and the spring piece 33a is formed by bending a metal material. The piano handle switch 10 can simplify the structure of the slide cam 33 as compared with a configuration in which the spring piece 33 a is integrally formed with the slide cam 33 inside the slide cam 33.

  Further, in the piano handle type switch 10 of the present embodiment, the spring piece 33a and the return spring 37 are configured separately, so that the spring piece 33a is a return spring accompanying the urging of the return spring 37 to the push button handle 32. The slide cam 33 can be urged without being affected by the deformation of 37. Since the piano handle switch 10 includes the spring piece 33a and the return spring 37 as separate bodies, the spring piece 33a is different from the spring piece 33a and the return spring 37 that are integrally formed. The restriction on the length of the spring piece 33a is relaxed without being affected by the deformation of the shape of 37. Since the piano handle switch 10 includes the spring piece 33a and the return spring 37 as separate bodies, the spring piece 33a is less distorted than the one in which the spring piece 33a and the return spring 37 are integrated. It becomes easy to plan.

  Note that the piano handle type switch 10 is not limited to one in which the push button handle 32 and the spring piece 33a are configured separately. Although the piano handle switch 10 is not shown, the push button handle 32 and the spring piece 33a may be configured integrally. The piano handle type switch 10 can reduce the number of parts constituting the piano handle type switch 10 by integrally configuring the push button handle 32 and the spring piece 33a.

  Since the piano handle type switch 10 of the present embodiment is provided with the spring piece 33a on the outside of the slide cam 33, the extension of the spring piece 33a is compared with a configuration having a spring piece on the inside of the slide cam 33. The restriction on the spring length of the portion 33a3 is relaxed. The spring piece 33a suppresses the maximum stress accompanying the stroke of the slide cam 33, thereby extending the life of the slide cam 33 and suppressing the generation of abnormal noise. Moreover, in the piano handle type switch 10 of this embodiment, since the spring piece 33a is provided separately from the slide cam 33 on the outside of the slide cam 33, it is compared with a spring piece provided on the inside of the slide cam 33. Thus, the slide cam 33 can be made smaller. Therefore, the piano handle type switch 10 of this embodiment can reduce the operation stroke of the piano handle 43 by reducing the entire slide cam 33. Further, in the piano handle type switch 10, when the slide cam 33 is made small as a whole, the slide cam 33 becomes light and the sliding operation of the slide cam 33 tends to be smooth. Further, the piano handle switch 10 can reduce the material cost of the slide cam 33 and reduce the cost as the slide cam 33 is reduced in size as a whole. Furthermore, the piano handle switch 10 can reduce the operation handle of the piano handle 43 by reducing the size of the reversing handle 31 as the slide cam 33 becomes smaller.

  In order to pivotally attach the piano handle 43, the cover body 5a is integrally provided with a pair of shaft portions 192 and 192 projecting obliquely forward on the surface side of the cover body 5a. The shaft portion 192 is formed in a columnar shape along the short direction of the cover body 5a. As shown in FIG. 12, the piano handle 43 is provided with a bearing portion 191 that attaches a bearing spring 191b formed of a metal leaf spring to a fitting hole 191a at one end of the rear surface of the piano handle 43. Yes. The piano handle 43 includes a locking hole 190 on one side of the inner peripheral surface of the fitting hole 191a. The piano handle 43 holds the bearing spring body 191b by locking the retaining claws 191c of the bearing spring 191b housed in the fitting hole 191a with the locking holes 190. The bearing spring body 191b is bent so that the tip protrudes into the fitting hole 191a, and the shaft portion 192 can be held by the protruding portion 191d and the fitting hole 191a.

  The piano handle 43 is provided with a protrusion 191d of the bearing spring 191b in the vicinity of the opening of the fitting hole 191a so that the opening width is narrower than the inside of the fitting hole 191a.

  The piano handle type switch 10 is configured to elastically fit the shaft portion 192 of the cover body 5a into the fitting hole 191a of the piano handle 43 against the spring force of the bearing spring 191b. The piano handle type switch 10 is configured such that a shaft portion 192 and a bearing portion 191 are pivotally attached so that the piano handle 43 is not easily detached from the cover body 5a. The piano handle switch 10 is configured such that the piano handle 43 can be pivotably mounted by fitting the shaft portion 192 to the bearing portion 191 so as to be rotatable. Note that the piano handle switch 10 is provided with a retaining piece 43a for retaining at the other end of the piano handle 43 on the piano handle 43 that protrudes rearward (see FIG. 11). The piano handle 43 inserts a retaining piece 43a into the space 12 through an insertion hole 54 formed in the front wall of the cover body 5a, and a locking claw 43b provided at the distal end of the retaining piece 43a on the periphery of the insertion hole 54. By locking, the rotation range of the piano handle 43 is restricted. In addition, the cover body 5a is provided with the insertion hole 54 along with three as shown in FIG. Further, the first terminal plate 15 has a guide piece 15f extending in front of the pressing piece 15b in the vicinity of the insertion hole 54, and an electric wire connected to the first terminal board 15 is connected to the insertion hole 54 side. Protruding and interfering with the retaining piece 43a is suppressed.

  In the piano handle type switch 10 of the present embodiment, the piano handle 43 is attached to the switch main body 1, and when the other end portion of the piano handle 43 is pushed, the pivot portion of the bearing portion 191 and the shaft portion 192 is used as an axis. The piano handle 43 rotates. The piano handle 43 preferably has a pair of operation ribs protruding from the rear surface of the piano handle 43. When the piano handle 43 is pushed, the push button handle 32 provided on the switch body 1 by the operation rib is It is pushed into the body 5 side.

  Hereinafter, the operation of the piano handle switch 10 of the present embodiment will be briefly described with reference to FIGS. 13 and 14. The piano handle switch 10 of the present embodiment constitutes a three-way switch, and will be described based on the contact and separation between the second movable contact 29b and the second fixed contact 25b in FIGS.

  In the piano handle type switch 10, as shown in FIG. 13, the contact 100 between the first terminal plate 15 and the third terminal plate 26 is closed while the movable contact 29 is in contact with the fixed contact 25. It shows the completed state. In the piano handle type switch 10, the reversing handle 31 is tilted to the right side of the paper surface of FIG. In the piano handle switch 10, the slide cam 33 is positioned at the center of the moving range by the spring piece 33a. When the piano handle switch 10 exerts a pressing force on the piano handle 43, the push button handle 32 is pushed into the body 5 against the return spring 37. In the piano handle switch 10, the slide cam 33 moves downward along with the push button handle 32 in FIG. In the piano handle type switch 10, the engaging cam body 38 of the slide cam 33 on the left side of the paper surface of FIG. 13 contacts the engaging protrusion 34 of the reverse handle 31 on the left side of the paper surface of FIG. Press down on the 13th page. In the piano handle type switch 10, when the engaging cam body 38 of the slide cam 33 pushes the left end portion of the reversing handle 31, the reversing handle 31 rotates counterclockwise around the front end of the fulcrum protrusion 31b.

  In the piano handle type switch 10, the left engagement cam body 38 is positioned on the left side of the left engagement protrusion 34, and the slide cam 33 slides to the left in FIG. In the piano handle type switch 10, as shown in FIG. 14, the reversing handle 31 rotates counterclockwise, the reversing spring 30 is reversed, and the switch 24 is also reversed. In the piano handle type switch 10, the movable contact 29 and the fixed contact 25 are separated by the reversal of the switch 24, and the contact 100 between the first terminal board 15 and the third terminal board 26 is opened. It becomes.

  When the piano handle switch 10 releases the pressing force applied to the piano handle 43, the push button handle 32 is pushed back by the spring force of the return spring 37. The piano handle switch 10 also returns the piano handle 43 in contact with the push button handle 32 to the original position. In the piano handle type switch 10, the slide cam 33 slides and returns to the center position by the spring force of the spring piece 33a.

  Although not shown, the piano handle switch 10 can rotate the reversing handle 31 when a pressing force is applied to the piano handle 43 while the contact 100 is open. In the piano handle switch 10, when the contact 100 is in an open state, the right engaging protrusion 34 of the reversing handle 31 abuts on the right engaging cam body 38 of the slide cam 33, and the reversing handle 31 rotates clockwise. The piano handle switch 10 can bring the movable contact 29 into contact with the fixed contact 25 via the reversing spring 30 as the reversing handle 31 rotates. That is, the piano handle switch 10 according to the present embodiment can open and close the contact 100 every time the piano handle 43 is pressed. The piano handle type switch 10 is a reversal that swings the reversing handle 31 alternately in the opposite direction every time the push button handle 32 is pushed by the slide cam 33, the spring piece 33a, the engaging projection 34 of the reversing handle 31 and the return spring 37. The mechanism part 41 is comprised.

  In the piano handle type switch 10 of the present embodiment, as shown in FIG. 2, prismatic regulating ribs 39 project from the portions adjacent to the guide projections 36 on the inner surface of the push button handle 32. In the piano handle type switch 10, the return spring piece 37 a of the return spring 37 bends and opens outward as the push button handle 32 is pressed. In the piano handle type switch 10, when the return spring piece 37 a bends and opens outward, the tip of each return spring piece 37 a hits the regulating rib 39. The piano handle type switch 10 is configured such that the displacement of the return spring 37 in the direction perpendicular to the pressing operation direction of the push button handle 32 is suppressed when the tip of each return spring piece 37 a hits the regulating rib 39.

  By the way, as shown in FIG. 11, the piano handle type switch 10 is provided with a piano handle 43 having a size that covers the opening window 120 a of the plate frame 120 and the opening window 130 a of the decorative plate 130 with one piece. The piano handle 43 is not limited to the size of the piano handle 43 that covers the opening window 120a of the plate frame 120 and the opening window 130a of the decorative plate 130, and is matched to the body 5 of the piano handle switch 10. The size can be appropriately adjusted. When the piano handle switch 10 has an operation area larger than that of the push button handle 32, the piano handle 43 can be operated more easily than when the push button handle 32 is pushed.

  In the piano handle type switch 10, two bearing portions 191 provided at one end portion of the rear surface of the piano handle 43 are provided so as to correspond to the pair of shaft portions 192 provided in the switch body 1. The piano handle 43 is attached by fitting the two shaft portions 192 of the switch body 1 to the two bearing portions 191 of the piano handle 43. The piano handle 43 has two retaining pieces 43 a protruding from the other end of the rear surface of the piano handle 43. The piano handle 43 inserts each retaining piece 43 a into the insertion hole 54 of the switch body 1. The piano handle 43 is preferably provided with a push position indicating projection 114 at the other end of the surface of the piano handle 43. In addition, the piano handle 43 preferably has a striped decorative line 115 formed of a large number of parallel straight lines on the surface of the piano handle 43.

  The plate frame 120 can be attached to the front side of the attachment frame 2 with an attachment screw 123. As shown in FIG. 11, the plate frame 120 has a rectangular frame shape, and is provided with screw insertion holes 121 through which the mounting screws 123 are inserted into the upper piece and the lower piece, respectively. For the plate frame 120, for example, a synthetic resin such as ABS resin can be used as the material of the plate frame 120. Further, the plate frame 120 is provided with a locking hole 122 in which a locking piece (not shown) of the decorative plate 130 is inserted and locked in each of the left piece and the right piece of the plate frame 120. Further, the plate frame 120 includes plate holding holes 125 for attaching metal simple fireproof plates (not shown) to the four corners of the plate frame 120. The plate frame 120 includes a stepped portion 124 over the entire circumference of the peripheral portion of the plate frame 120. The decorative plate 130 coupled to the plate frame 120 is formed in a rectangular frame shape like the plate frame 120. For the decorative plate 130, for example, a synthetic resin such as ABS resin can be used as the material of the decorative plate 130. In addition, the decorative plate 130 projects a locking piece for coupling to the plate frame 120 on the back surface of the decorative plate 130.

  In the piano handle type switch 10 of this embodiment, the plate frame 120 is attached to the attachment frame 2 to which the switch body 1 is attached by the attachment screw 123. In the piano handle type switch 10, the decorative plate 130 is coupled to the plate frame 120. In the piano handle type switch 10, a piano handle 43 is attached to the switch body 1. The piano handle type switch 10 can project a part of the piano handle 43 forward of the plate through the opening window 120a of the plate frame 120 and the opening window 130a of the decorative plate 130. The piano handle switch 10 is configured such that the piano handle 43 can be pushed and operated in a state in which a part of the piano handle 43 protrudes forward of the plate. Further, the decorative plate 130 is merely engaged with the plate frame 120 by a locking piece, and a tool with a sharp tip is inserted into the removal groove 126 provided at the lower end of the plate frame 120. The decorative plate 130 can be removed from the plate frame 120. Note that various tools can be used as the tool having a sharp tip, and for example, a minus driver can be used. Therefore, the piano handle switch 10 can be finished in an excellent appearance by preventing the mounting screw 123 from being exposed on the surface side in a state where the decorative plate 130 is attached. Further, the piano handle switch 10 can remove the decorative plate 130 relatively easily during maintenance.

5 Body 10 Piano handle switch 31 Reverse handle 32 Push button handle 33 Slide cam 33a Spring piece 37 Return spring 40 Switch mechanism 41 Reverse mechanism 43 Piano handle

Claims (1)

A body provided with a push button handle to be pushed on the front side, and arranged in front of the body so as to cover the front side of the body, one end of which is pivotally attached to the body, and a rear surface of the body A piano handle that abuts the push button handle, a return spring that is housed in the container and biases the push button handle in a direction opposite to the direction in which the push button handle is pushed, and a push button handle that is housed in the container. A switch mechanism that opens and closes a contact for each operation, a reversing handle that can be swung inside the return spring, and a reversing mechanism that alternately swivels the reversing handle in the opposite direction each time the push button handle is pushed. A piano handle type switch with
The reversing mechanism portion is disposed between the push button handle and the reversing handle, and is along a direction perpendicular to the direction in which the push operation is performed so that the push button handle can push only one side of the reversing handle. A piano handle comprising: a slide cam that slides; and a metal spring piece that is provided outside the slide cam and biases the slide cam in a direction opposite to the sliding direction of the slide cam. Type switch.

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