JP2015153557A - Switch module, switch and switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable implementation of both of miniaturization of a housing and enhancement of arc resistance in a switch module, a switch and a switch device.SOLUTION: A switch module 1 has a housing 11, a push-button handle 12, a fixed contact point 14 and a movable contact point 15. Press force acts on an operation face 121 of the push-button handle 12 in a first direction. The movable contact point 15 moves between a position to contact with the fixed contact point 14 and a position to separate from the fixed contact point 14 every time the press force acts on the operation face 121 of the push-button handle 12. The housing 11 includes a body 61 and a cover 62. The body 61 is provided at a part of the peripheral edge of an opening of the body 61 with a projection portion 65 projecting along the first direction so as to cover the fixed contact point 14 and the movable contact point 15 when viewed from a second direction perpendicular to the first direction.

Description

  The present invention generally relates to a switch module, a switch, and a switch device. More specifically, the present invention relates to a switch module that switches a contact state each time a pressing force is applied to a pushbutton handle, a switch using the switch module, and a switch It relates to the switch device used.

  2. Description of the Related Art Conventionally, a switch that switches a contact state every time a pressing force is applied to an operation handle is known (see, for example, Patent Document 1). The switch described in Patent Document 1 is a switch having a base point on one side, and is a so-called piano handle type switch. In the switch body of the switch described in Patent Document 1, a fixed contact and a movable contact are housed in a container (housing) that is configured by a body and a cover.

JP 2004-296230 A

  By the way, in such a switch, there is an increasing demand for reducing the height of the switch module (switch body). In other words, there is an increasing demand for reducing the height of the housing (container).

  However, if the height of the housing is simply lowered with respect to the conventional switch module, the position where the fixed contact and the movable contact come into contact with or away from each other in the housing approaches the boundary between the body and the cover. That is, the position of the contact composed of the fixed contact and the movable contact approaches the boundary between the body and the cover. It is not preferable that an arc accompanying the opening and closing of the contact occurs near the boundary between the body and the cover, and that the insulation distance between the outside of the housing and the contact is shortened due to the gap between the body and the cover.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a switch module, a switch, and a switch that can realize both miniaturization of the housing and improvement of arc resistance To provide an apparatus.

  The switch module of the present invention includes a housing, a push button handle, a fixed contact, and a movable contact. The push button handle is attached to the housing in a state where an operation surface on which a pressing force acts in the first direction is exposed to the outside. The fixed contact is accommodated in the housing. The movable contact is accommodated in the housing. The movable contact moves between a position in contact with the fixed contact and a position away from the fixed contact each time a pressing force is applied to the operation surface of the push button handle. The housing includes a box-shaped body and a cover. The body has an opening. The cover is coupled to the body so as to cover the opening of the body. The body protrudes along the first direction so as to cover the fixed contact and the movable contact as seen from a second direction orthogonal to the first direction at a part of the periphery of the opening. A protrusion is provided.

  In this switch module, it is preferable that the body is formed of a material that is more flame-retardant and tracking-resistant than the cover.

  In this switch module, the body is preferably formed of a thermosetting resin.

  In this switch module, the housing is preferably formed in a rectangular parallelepiped shape. The first direction and the second direction are orthogonal to the longitudinal direction of the housing. The fixed contact and the movable contact are accommodated in the housing so as to face each other along the longitudinal direction. The protruding portion is provided on a part of the side wall along the longitudinal direction of the body so as to protrude along the first direction from the remaining portion of the side wall.

  In this switch module, preferably, the body includes a pair of assembly protrusions provided on the side wall in the longitudinal direction. The cover includes a pair of assembly pieces each having an assembly hole that engages with a corresponding assembly protrusion. The protrusion is provided between the pair of assembly pieces when the corresponding assembly protrusion is engaged with the assembly hole.

  In this switch module, it is preferable that the switch module is held by a mounting frame for mounting on the construction surface.

  The switch of the present invention includes the switch module and an operation handle. The operation handle is disposed in the housing so as to face the push button handle, and transmits a pressing force by the push operation to the push button handle.

  The switch device of the present invention includes the switch, a mounting frame, and a plate. The mounting frame holds the switch module. The plate is disposed on the front side of the mounting frame with the operation handle exposed.

  In the present invention, even when the height of the housing is lowered, the boundary between the body and the cover can be moved away from the contact point. Thereby, in this invention, it can implement | achieve both making a housing small and improving arc resistance.

It is sectional drawing which shows the principal part of the switch module which concerns on embodiment. It is an appearance perspective view of a switch module, an operation handle, a mounting frame, and a plate concerning an embodiment. It is a disassembled perspective view of the switch module which concerns on embodiment. It is sectional drawing of the state in which the operation handle was attached to the switch module which concerns on embodiment. It is sectional drawing which shows the principal part of another example of the switch module which concerns on embodiment.

  The switch module according to the following embodiment includes a protruding portion that protrudes so as to cover the fixed contact and the movable contact at a part of the periphery of the opening of the body. Thereby, both miniaturization of the housing and improvement of arc resistance can be realized.

  Hereinafter, a switch module according to the present embodiment, a switch using the switch module, and a switch device using the switch will be described with reference to the drawings.

  As shown in FIG. 1, the switch module 1 according to the present embodiment is configured to switch the state of the contact 13 every time a pressing force is applied to the push button handle 12. As shown in FIG. 2, the switch module 1 constitutes a switch 3 together with the operation handle 2. That is, the switch 3 according to the present embodiment includes the switch module 1 and the operation handle 2. The operation handle 2 is disposed in the housing 11 so as to face the push button handle 12, and transmits a pushing force by the push operation to the push button handle 12. The switch 3 according to this embodiment is a switch having a base point on one side, and is a so-called piano handle type switch. In the present embodiment, a piano handle type switch is exemplified as the switch 3, but the switch 3 may be a switch other than the piano handle type switch.

  In the following description, unless otherwise specified, the longitudinal direction of the switch module 1 is the left-right direction A1, the short direction of the switch module 1 is the up-down direction (second direction) A2, and the longitudinal direction and the short direction of the switch module 1 are described. The direction orthogonal to any of the hand directions is defined as the front-rear direction (first direction) A3.

  Next, the switch module 1 will be described with reference to FIGS. However, description of components common to the conventional example will be omitted as appropriate.

  As shown in FIG. 1, the switch module 1 includes a housing 11 and a push button handle 12. The switch module 1 includes a fixed contact 14 and a movable contact 15 as the contacts 13. Further, as shown in FIG. 3, the switch module 1 includes an opening / closing element 41, a first terminal plate 42, a second terminal plate 43, a pair of first lock springs 44, and a pair of second locks. The lock spring 45, the first release button 46, and the second release button 47 are provided. The switch module 1 includes a reversing spring 51, a reversing handle 52, a slide cam 53, and a return spring 54 as a switching mechanism for switching the state of the contact 13. The switch module 1 is held by a mounting frame 8 (see FIG. 2) used for mounting on a construction surface (not shown).

  As shown in FIG. 3, the housing 11 includes a body 61 and a cover 62. The body 61 is formed in a box shape and has an opening 611. The cover 62 is coupled to the body 61 so as to cover the opening 611 of the body 61. The housing 11 is formed in a rectangular parallelepiped shape.

  In the internal space of the housing 11, an opening / closing element 41, a first terminal plate 42, a second terminal plate 43, a pair of first locking springs 44, and a pair of second locking springs 45 The first release button 46 and the second release button 47 are housed.

  The body 61 is a synthetic resin molded product. The body 61 is integrally provided with a bottom wall 612, a pair of side walls 613 facing each other in the short direction (up and down direction A2), and a pair of side walls 614 facing each other in the longitudinal direction (left and right direction A1). The dimension of the housing 11 in the short direction (vertical direction A2) is such that up to three wiring devices having the same size as the switch module 1 can be mounted on the mounting frame 8 (see FIG. 2). That is, the dimension of the housing 11 in the short direction (vertical direction A2) is approximately one third of the dimension of the window hole 81 (see FIG. 2) of the mounting frame 8 in the vertical direction A2. On the other hand, the dimension of the housing 11 in the longitudinal direction (left-right direction A1) is substantially equal to the dimension of the window hole 81 in the left-right direction A1.

  The body 61 is provided with a pair of assembly protrusions 615 on each of the pair of side walls 613. In each side wall 613, the pair of assembly protrusions 615 are provided side by side in the longitudinal direction (left-right direction A 1) of the housing 11. Further, as shown in FIG. 1, a pair of first electric wire insertion holes 616 and a pair of second electric wire insertion holes 617 for inserting electric wires (not shown) are formed in the bottom wall 612. . One release hole (not shown) is formed in the vicinity of the pair of first electric wire insertion holes 616 and the pair of second electric wire insertion holes 617. Further, a V-shaped position restricting recess 618 (see FIG. 1) having a wide front end is formed in the body 61.

  The cover 62 is a synthetic resin molded product. As shown in FIG. 3, the cover 62 includes a front wall 621, a pair of side walls 622 that face each other in the short direction (vertical direction A <b> 2), and a pair of side walls 623 and 624 that face each other in the longitudinal direction (left and right direction A <b> 1). Is integrated. Each of the pair of side walls 622 of the cover 62 is provided with a pair of assembly pieces 625 extending rearward from the rear edge. Each assembly piece 625 is formed with an assembly hole 626. When the corresponding assembly protrusion 615 is engaged with the assembly hole 626, the body 61 and the cover 62 are coupled.

  A recess 627 is formed in the front wall 621 of the cover 62. A through hole 628 is formed in the bottom wall of the recess 627 so as to penetrate the bottom wall. A light source cover 64 having translucency is attached to the front wall 621 of the cover 62. Inside the housing 11, for example, a light source (not shown) that is lit when the contact 13 (see FIG. 1) is open is housed. The light emitted from the light source passes through the light source cover 64 and is emitted to the outside of the cover 62. The switch module 1 may be configured such that the light source emits light when the movable contact 15 is separated from the fixed contact 14, or the light source emits light while the movable contact 15 is in contact with the fixed contact 14. It may be configured to. The switch module 1 may be configured such that the light source emits light by distinguishing between the state in which the movable contact 15 is in contact with the fixed contact 14 and the state in which the movable contact 15 is separated from the fixed contact 14.

  Each of the side walls 623 and 624 of the cover 62 is provided with two attachment claws 631 for attaching the switch module 1 to the attachment frame 8 (see FIG. 2). The front wall 621 of the cover 62 is provided with two shaft portions 632 for supporting the operation handle 2. Further, a plurality of (three in the illustrated example) insertion holes 633 are formed side by side on the front wall 621 of the cover 62.

  As shown in FIG. 3, the push button handle 12 is attached to the housing 11 with an operation surface 121 on which a pressing force is applied in the front-rear direction (first direction) A3 being exposed to the outside. More specifically, the push button handle 12 is attached to the front wall 621 of the cover 62 so as to be movable in the front-rear direction A3. The push button handle 12 includes protrusions 122 on both outer sides in the left-right direction (longitudinal direction) A1. A protrusion 122 is inserted into a guide groove (not shown) formed along the front-rear direction A3 on the rear part of the inner peripheral surface of both sides of the concave portion 627 of the cover 62, so that it can be moved in the front-rear direction A3 and is prevented from being pulled forward. Has been made.

  The first terminal plate 42 includes a connecting piece 421, a pair of pressure contact pieces 422, and a pair of contact pieces 423. The pair of pressure contact pieces 422 and the pair of contact pieces 423 are connected to the connection piece 421 so as to face each other. A contact holding piece 424 is provided on the first terminal plate 42.

  The second terminal plate 43 includes a connecting piece 431, a pair of press contact pieces 432, and a pair of contact pieces 433. The pair of pressure contact pieces 432 and the pair of contact pieces 433 are connected to the connection piece 431 so as to face each other. The second terminal plate 43 is provided with a connecting piece 434 extending. A support piece 435 is formed at the tip of the connecting piece 434.

  Each of the pair of first lock springs 44 and the pair of second lock springs 45 is formed by bending both ends of a conductive metal strip having elasticity. The first locking spring 44 contacts the contact piece 423 of the first terminal plate 42 and opposes the pressure contact piece 422. The second locking spring 45 abuts against the abutting piece 433 of the second terminal plate 43 and opposes the pressing piece 432. When an electric wire (not shown) is inserted into the body 61 from the first electric wire insertion hole 616 (see FIG. 1), the electric wire is sandwiched between the first locking spring 44 and the pressure contact piece 422. As a result, the tip of the first locking spring 44 bites into the core wire of the electric wire and is prevented from being removed, and the electric wire and the first terminal plate 42 are electrically connected by the first locking spring 44. Similarly, when an electric wire (not shown) is inserted into the body 61 from the second electric wire insertion hole 617, the electric wire is sandwiched between the second locking spring 45 and the pressure contact piece 432. As a result, the distal end of the second locking spring 45 bites into the core wire of the electric wire and is prevented from being removed, and the electric wire and the second terminal plate 43 are electrically connected by the second locking spring 45.

  The first release button 46 and the second release button 47 are formed using a thermosetting resin such as urea resin. If the first release button 46 is pushed by the tip of a tool such as a flat-blade screwdriver through the release hole, the first locking spring 44 can be pulled away from the pressure contact piece 422 to pull out the electric wire. Similarly, if the second release button 47 is pushed, the second locking spring 45 can be pulled away from the pressure contact piece 432 and the electric wire can be pulled out.

  As shown in FIG. 1, a part of the opening / closing element 41 is inserted into the position restricting recess 618 of the body 61 with the rear end edge 411 in contact with the support piece 435. As a result, the opening / closing element 41 can be rotated within the range of the position restricting recess 618 with the rear end edge 411 as a fulcrum in a state where it is in contact with the support piece 435. The opening / closing element 41 is disposed so as to face the contact holding piece 424 in the left-right direction A1. As shown in FIG. 3, the opening / closing element 41 is provided with a spring seat piece 412.

  As shown in FIG. 1, the fixed contact 14 is accommodated in the housing 11. More specifically, the fixed contact 14 is provided at the tip of the contact holding piece 424.

  The movable contact 15 is accommodated in the housing 11. More specifically, the movable contact 15 is provided at a position of the switch 41 facing the fixed contact 14 provided on the contact holding piece 424. That is, the movable contact 15 faces the fixed contact 14 in the left-right direction A1. The movable contact 15 is disposed in the center of the body 61.

  The movable contact 15 moves between a position in contact with the fixed contact 14 and a position away from the fixed contact 14 every time a pressing force is applied to the operation surface 121 of the push button handle 12. More specifically, each time a pressing force is applied to the push button handle 12, a switching mechanism described later operates to rotate the switch 41 so that the movable contact 15 contacts the fixed contact 14, and the movable contact The state where 15 is separated from the fixed contact 14 is switched. As a result, there are a state where the first terminal plate 42 and the second terminal plate 43 are electrically connected and a state where the first terminal plate 42 and the second terminal plate 43 are electrically separated. Can be switched.

  In such a switch module 1, an arc may occur when the movable contact 15 moves away from the fixed contact 14. In order to improve the resistance against this arc, the body 61 of the present embodiment is configured as follows.

  As shown in FIGS. 1 and 3, the body 61 of the present embodiment is provided with a pair of protrusions 65 at a part of the periphery of the opening 611 of the body 61. The pair of projecting portions 65 are directions in which a pressing force is applied to the operation surface 121 of the push button handle 12 so as to cover the fixed contact 14 and the movable contact 15 when viewed from the short side direction (vertical direction A2) of the housing 11. Projecting along direction A3). In other words, the body 61 of the present embodiment is provided with a pair of protrusions 65 so that the boundary between the body 61 and the cover 62 is away from the fixed contact 14 and the movable contact 15.

  More specifically, the pair of protrusions 65 are provided on a part of the pair of side walls 613 along the left-right direction (longitudinal direction) A1 so as to protrude along the front-rear direction A3 rather than the remaining part of the side walls 613. Yes. As described above, the fixed contact 14 and the movable contact 15 are accommodated in the housing 11 so as to face each other along the left-right direction (longitudinal direction) A1. Thus, in the configuration in which the fixed contact 14 and the movable contact 15 are housed in the housing 11, the protrusion 65 is provided on each of the pair of side walls 613 along the left-right direction (longitudinal direction) A <b> 1.

  More preferably, the protrusion 65 is provided between the pair of assembly pieces 625 when the assembly protrusion 615 is engaged with the assembly hole 626. That is, the protruding portion 65 is provided in the central portion of the side wall 613 in the left-right direction (longitudinal direction) A1.

  A pair of protrusion part 65 is formed in plate shape. Each protrusion 65 is formed such that the length in the longitudinal direction (left-right direction A1) of the housing 11 is shortened from the proximal end toward the distal end. Further, the pair of projecting portions 65 are provided to face each other in the short direction (vertical direction A <b> 2) of the housing 11.

  The body 61 is made of a material that is more flame retardant and tracking resistant than the cover 62. That is, the protrusion 65 is made of a material that is more flame retardant and tracking resistant than the cover 62. In particular, the body 61 (including the protruding portion 65) is preferably formed of a thermosetting resin such as a urea resin.

  Next, the switching mechanism of the contact 13 will be described with reference to FIG. As described above, the switching mechanism of the contact 13 is configured to move the movable contact 15 between a position in contact with the fixed contact 14 and a position away from the fixed contact 14. That is, the switching mechanism of the contact 13 is configured to switch the state of the contact 13 every time the push button handle 12 is pushed. As described above, the reversing spring 51, the reversing handle 52, the slide cam 53, and the return spring 54 are provided as the switching mechanism for the contact point 13.

  The reversal spring 51 is a compression coil spring. A spring seat piece 412 of the opening / closing element 41 is inserted into the rear end portion of the reversing spring 51.

  The reversing handle 52 includes a cylindrical portion 521 that is open on the rear surface. A front end portion of the reversing spring 51 is accommodated in the cylindrical portion 521. The front end portion of the reversing handle 52 is exposed to the front side of the cover 62 through a through hole 628 formed in the concave portion 627 of the cover 62. Further, fulcrum protrusions 524 are provided so as to protrude from both side surfaces of the intermediate portion of the reversing handle 52. The reversing handle 52 is swingably attached to the cover 62 by pivotally supporting the fulcrum protrusion 524 on the bearing portion 629 of the through hole 628. Further, the reversing handle 52 is provided with a pair of protrusions 522 and 523 (see FIG. 1). The pair of protrusions 522 and 523 are exposed to the front side of the cover 62 through the through hole 628.

  The slide cam 53 is formed of a thermoplastic resin rich in elasticity such as polyacetal. The slide cam 53 is configured to slide along the back surface of the push button handle 12 according to the positional relationship of the reversing handle 52 when a pressing force is applied to the push button handle 12.

  The return spring 54 is attached to the rear surface of the push button handle 12. Then, the front end of the return spring piece 541 of the return spring 54 is elastically contacted with the bottom wall of the recess 627, whereby the push button handle 12 is urged forward.

  Next, the operation of the switch module 1 according to the present embodiment will be described with reference to FIG. FIG. 1 shows a state in which the movable contact 15 is in contact with the fixed contact 14. In this state, when the push button handle 12 is pushed into the housing 11 against the return spring 54, the slide cam 53 moves downward together with the push button handle 12. At this time, since the slide cam 53 hits the protrusion 522 of the reversing handle 52 and pushes the left end portion of the reversing handle 52, the reversing handle 52 rotates so as to tilt to the left, and the reversing spring 51 (see FIG. 3) is most compressed. Go through and flip. As a result, the direction of the spring force acting on the opening / closing element 41 from the reversing spring 51 is reversed, and the opening / closing element 41 is reversed by the spring force. As a result, the movable contact 15 is separated from the fixed contact 14. On the other hand, when the pressing force is applied to the push button handle 12 when the movable contact 15 is away from the fixed contact 14, the protrusion 523 of the reversing handle 52 hits the slide cam 53, so that the reversing handle 52 falls to the right side. It rotates and reverses through the position where the reversal spring 51 is compressed most. As a result, the direction of the spring force acting on the opening / closing element 41 from the reversing spring 51 is reversed, and the opening / closing element 41 is reversed by the spring force. As a result, the movable contact 15 contacts the fixed contact 14.

  Next, the operation handle 2 will be described with reference to FIGS.

  The operation handle 2 is formed in a rectangular plate shape having a dimension sufficiently larger than the operation surface 121 of the push button handle 12. On the rear surface (rear surface) of the operation handle 2, a bearing portion (not shown) to which the shaft portion 632 is rotatably attached is provided at a portion facing the shaft portion 632 of the switch module 1. The operation handle 2 is rotatably supported on one end side (left side) in the left-right direction A1 on the front surface of the switch module 1 by holding the shaft portion 632 in the bearing portion. Thus, when the right side of the operation handle 2 is pushed backward, the operation handle 2 is configured to rotate about a portion supported by the shaft portion 632 and push the push button handle 12. The operation handle 2 is provided with two retaining pieces 21. The engaging claw 22 provided at the distal end portion of the retaining piece 21 is engaged with the insertion hole 633 (see FIG. 3) of the cover 62, whereby the rotation range of the operation handle 2 is restricted.

  The operation handle 2 shown in FIG. 5 is used when only one switch module 1 is attached to the attachment frame 8, and the size of the operation handle 2 is substantially the same as a window hole 921 of the plate cover 92 described later. Is formed. When two switch modules 1 are attached to the attachment frame 8, the size of the operation handle 2 is substantially the same as the size obtained by dividing the window hole 921 into two equal parts in the vertical direction A2. When three switch modules 1 are attached to the attachment frame 8, the size of the operation handle 2 is substantially the same as the size obtained by dividing the window hole 921 into three equal parts in the vertical direction A2.

  Next, the switch device 7 using the switch 3 will be described with reference to FIG.

  The switch device 7 according to the present embodiment includes the above-described switch 3 (switch module 1 and operation handle 2), a mounting frame 8, and a plate 9.

  The mounting frame 8 is configured to hold the switch module 1. The mounting frame 8 is formed in a rectangular frame shape from a synthetic resin or a metal plate. A window hole 81 to which the switch module 1 is attached is formed in the attachment frame 8. The mounting frame 8 includes a pair of first beam portions 82 and a pair of second beam portions 83. The pair of first beam portions 82 oppose each other with the window hole 81 interposed therebetween in the vertical direction A2. The pair of second beam portions 83 oppose each other with the window hole 81 interposed therebetween in the left-right direction A1. The window hole 81 has a rectangular shape and is formed to have substantially the same size as the front surface of the three switch modules 1 when three switch modules 1 are arranged in the vertical direction A2.

  Each of the pair of first beam portions 82 is formed with an insertion hole 84 into which a screw (not shown) for fixing the first beam portion 82 to the construction material is inserted. Each of the pair of first beam portions 82 is formed with a screw hole 85 on the outer side of the insertion hole 84 and in the center in the left-right direction A1.

  In each of the pair of second beam portions 83, two through holes 861 are formed in the center portion of the second beam portion 83 in the vertical direction A2. The two through holes 861 are formed at the same interval as the two mounting claws 631 on one side of the switch module 1. Two attachment claws 631 of the switch module 1 arranged at the attachment position in the center are respectively engaged with the two through holes 861. Each of the second beam portions 83 is formed with two through holes 862 and 863 on one end side (upper side portion) and the other end side (lower side portion) in the vertical direction A2. Two mounting claws 631 of the switch module 1 are engaged with the two through holes 862 and 863, respectively. That is, the pair of through-holes 861 holds the switch module 1 at the central mounting position. Each pair of through-holes 862 and 863 holds the switch module 1 at the attachment positions on both sides.

  Further, each second beam portion 83 includes a through hole 861 and a through hole 863 that are adjacent to each other in the vertical direction A2 so that the switch module 1 can be held at a predetermined position other than both side portions and the central portion in the vertical direction A2. A through hole 864 is formed therebetween. An attachment claw 631 of the switch module 1 is engaged with the through hole 864.

  Further, the mounting frame 8 has a front surface of the first beam portion 82 and a second beam portion 83 so that the front surface of the second beam portion 83 is located behind the front surface of the first beam portion 82. A step 87 is formed between the front surface and the front surface. That is, the mounting frame 8 is constructed on the front surface of the portion where the through holes 861 to 864 are formed in the second beam portion 83 than on the front surface of the portion arranged on the surface side of the construction material in the first beam portion 82. The first beam portion 82 and the second beam portion 83 are configured so as to be positioned on the rear side in a state of being attached to the material.

  The plate 9 is disposed on the front side of the mounting frame 8 with the operation handle 2 exposed. The plate 9 includes a plate body 91 and a plate cover 92.

  The plate body 91 is formed in a rectangular frame shape by a synthetic resin material such as ABS resin. A window hole 911 is formed in the plate body 91. An insertion hole 912 is formed in the plate body 91. The plate body 91 is attached to the attachment frame 8 when an attachment screw (not shown) inserted into the insertion hole 912 is screwed into the screw hole 85. The window hole 911 is formed at a position overlapping the window hole 81 of the attachment frame 8 in the front-rear direction A3 in a state where the plate body 91 is attached to the attachment frame 8. In addition, three through holes 913 are formed on both side portions of the plate body 91 along the vertical direction A2.

  The plate cover 92 is detachably attached to the plate body 91 so as to cover the plate body 91. The plate cover 92 is made of a synthetic resin material. A rectangular window hole 921 is formed in the center of the plate cover 92. Further, on the back surface of the plate cover 92, engaging portions (not shown) that are engaged with the through holes 913 are provided at portions corresponding to the plurality of through holes 913 provided in the plate body 91. ing.

  The plate body 91 is attached to the attachment frame 8 to which the switch module 1 is attached, the plate cover 92 is further coupled to the plate body 91, and the operation handle 2 is attached to the switch module 1. Accordingly, the front surface of the operation handle 2 can be exposed to the front of the plate 9 through the window holes 911 and 921 of the plate body 91 and the plate cover 92, so that the operation handle 2 can be pushed.

  The switch module 1 according to this embodiment described above includes a housing 11, a push button handle 12, a fixed contact 14, and a movable contact 15. The push button handle 12 is attached to the housing 11 in a state where the operation surface 121 on which a pressing force acts in the first direction (front-rear direction A3) is exposed to the outside. The fixed contact 14 is accommodated in the housing 11. The movable contact 15 is accommodated in the housing 11. The movable contact 15 moves between a position in contact with the fixed contact 14 and a position away from the fixed contact 14 every time a pressing force is applied to the operation surface 121 of the push button handle 12. The housing 11 includes a box-shaped body 61 and a cover 62. The body 61 has an opening 611. The cover 62 is coupled to the body 61 so as to cover the opening 611 of the body 61. The body 61 extends along the first direction so as to cover the fixed contact 14 and the movable contact 15 as viewed from a second direction (vertical direction A2) orthogonal to the first direction on a part of the periphery of the opening 611. The protrusion part 65 which protrudes is provided.

  In the switch module 1 according to the present embodiment, the protruding portion 65 is provided at a part of the periphery of the opening 611 of the body 61 so as to cover the contact 13 constituted by the fixed contact 14 and the movable contact 15. Thereby, in the switch module 1 according to the present embodiment, the boundary between the body 61 and the cover 62 can be kept away from the contact point 13 even when the height of the housing 11 (length in the front-rear direction A3) is lowered. . And in the switch module 1 which concerns on this embodiment, it can reduce that an arc generate | occur | produces the said boundary vicinity, and can fully maintain the insulation distance of the outer side of the housing 11, and the contact point 13. FIG. As a result, it is possible to realize both miniaturization of the housing 11 and improvement of arc resistance. Furthermore, in the switch module 1 according to the present embodiment, it is possible to reduce the open / close sound generated when the contact 13 is opened / closed from leaking outside.

  In the switch module 1 according to the present embodiment, the protrusion 65 is provided at a part of the periphery of the opening 611, so that the positional deviation between the body 61 and the cover 62 can be reduced. Further, in the switch module 1 according to the present embodiment, the cover 62 can be easily coupled to the body 61 with reference to the protruding portion 65 protruding from the other portion at the periphery of the opening 611 of the body 61.

  In addition, as in the present embodiment, the body 61 is preferably formed of a material that is more flame retardant and tracking resistant than the cover 62.

  In the switch module 1 according to the present embodiment, since the body 61 is formed of a material that is more flame retardant and tracking resistant than the cover 62, an area where arcing is likely to occur is flame retardant and tracking resistant. Can be made of material. Thereby, arc resistance can further be improved.

  Further, as in the present embodiment, the body 61 is preferably formed of a thermosetting resin.

  In the switch module 1 according to the present embodiment, since the body 61 is formed of a thermosetting resin, flame retardancy and tracking resistance can be easily increased in a region where an arc is likely to occur. Thereby, the switch module 1 which concerns on this embodiment can improve arc resistance easily.

  Further, as in the present embodiment, the housing 11 is preferably formed in a rectangular parallelepiped shape. The first direction (front-rear direction A3) and the second direction (up-down direction A2) are orthogonal to the longitudinal direction (left-right direction A1) of the housing 11. The fixed contact 14 and the movable contact 15 are accommodated in the housing 11 so as to face each other along the longitudinal direction. The protruding portion 65 is provided on a part of the side wall 613 along the longitudinal direction of the body 61 so as to protrude along the first direction from the remaining portion of the side wall 613.

  In the switch module 1 according to the present embodiment, the protruding portion 65 is provided on a part of the side wall 613 along the longitudinal direction (left-right direction A1) of the body 61 so as to protrude from the remaining portion of the side wall 613. Thereby, in the switch module 1 according to the present embodiment, the boundary along the longitudinal direction closer to the contact 13 than the boundary along the short direction (vertical direction A2) can be moved away from the contact 13. As a result, the boundary between the body 61 and the cover 62 can be kept away from the arc generated along the direction in which the contact 13 opens and closes, that is, the longitudinal direction (left-right direction A1).

  Further, as in the present embodiment, preferably, the body 61 includes a pair of assembly protrusions 615 provided on the side wall 613 side by side in the longitudinal direction (left-right direction A1). The cover 62 includes a pair of assembly pieces 625 in which assembly holes 626 that are engaged with the corresponding assembly protrusions 615 are formed. The protrusion 65 is provided between the pair of assembly pieces 625 when the assembly protrusion 615 corresponding to the assembly hole 626 is engaged.

  In the switch module 1 according to this embodiment, when the assembly protrusion 615 of the body 61 is engaged with the assembly hole 626 of the cover 62, the protrusion 65 is provided between the pair of assembly pieces 625 of the cover 62. Thereby, in the switch module 1 according to the present embodiment, even if the protrusion 65 is provided on the body 61, the assembly hole 626 and the assembly protrusion 615 can be engaged as in the conventional case.

  Moreover, it is preferable that the switch module 1 is hold | maintained at the attachment frame 8 for attaching to a construction surface like this embodiment.

  The switch 3 according to this embodiment includes a switch module 1 and an operation handle 2. The operation handle 2 is disposed in the housing 11 so as to face the push button handle 12. The operation handle 2 transmits the pressing force generated by the pressing operation to the push button handle 12.

  The switch device 7 according to this embodiment includes a switch 3, a mounting frame 8, and a plate 9. The mounting frame 8 holds the switch module 1. The plate 9 is disposed on the front side of the mounting frame 8 with the operation handle 2 exposed.

  In the present embodiment, the case where the switch module 1 is a module for a single-sided switch has been described. However, the switch module 1 may be a module for a switch other than the single-sided switch. For example, the switch module 1 may be a module for a three-way switch as shown in FIG. The switch module 1 shown in FIG. 5 includes two fixed contacts 141 and 142 and two movable contacts 151 and 152 as the contacts 13. In this switch module 1, each time a pressing force is applied to the push button handle 12, the state in which the movable contact 151 contacts the fixed contact 141 and the state in which the movable contact 152 contacts the fixed contact 142 can be switched. Note that when the movable contact 151 comes into contact with the fixed contact 141, the movable contact 152 is separated from the fixed contact 142. When the movable contact 152 contacts the fixed contact 142, the movable contact 151 moves away from the fixed contact 142.

DESCRIPTION OF SYMBOLS 1 Switch module 11 Housing 12 Pushbutton handle 121 Operation surface 14 Fixed contact 141 Fixed contact 142 Fixed contact 15 Movable contact 151 Movable contact 152 Movable contact 2 Operation handle 3 Switch 61 Body 611 Opening 613 Side wall 615 Assembly protrusion 62 Cover 625 Assembly piece 626 Assembly Hole 65 Projection 7 Switch device 8 Mounting frame 9 Plate

Claims (8)

A housing;
A push button handle attached to the housing in a state where an operation surface on which a pressing force acts in the first direction is exposed to the outside;
A fixed contact housed in the housing;
A movable contact that is housed in the housing and moves between a position that contacts the fixed contact and a position that moves away from the fixed contact each time a pressing force acts on the operation surface of the push button handle;
The housing is
A box-shaped body having an opening;
A cover coupled to the body to cover the opening of the body;
The body protrudes along the first direction so as to cover the fixed contact and the movable contact as seen from a second direction orthogonal to the first direction at a part of the periphery of the opening. A switch module, characterized in that a protrusion is provided.   The switch module according to claim 1, wherein the body is formed of a material that is more flame-retardant and tracking-resistant than the cover.   The switch module according to claim 2, wherein the body is made of a thermosetting resin. The housing is formed in a rectangular parallelepiped shape,
The first direction and the second direction are orthogonal to the longitudinal direction of the housing,
The fixed contact and the movable contact are accommodated in the housing so as to face each other along the longitudinal direction,
The protruding portion is provided on a part of a side wall of the body along the longitudinal direction so as to protrude along the first direction rather than the remaining portion of the side wall. The switch module of any one of -3. The body includes a pair of assembly protrusions provided side by side in the longitudinal direction on the side wall,
The cover includes a pair of assembly pieces each having an assembly hole that is engaged with a corresponding assembly protrusion.
The switch module according to claim 4, wherein the protrusion is provided between the pair of assembly pieces when the corresponding assembly protrusion is engaged with the assembly hole.   The switch module according to any one of claims 1 to 5, wherein the switch module is held by a mounting frame for mounting on the construction surface. The switch module according to any one of claims 1 to 6,
A switch comprising: an operation handle disposed on the housing so as to face the push button handle and transmitting a push force by the push operation to the push button handle. A switch according to claim 7;
A mounting frame for holding the switch module;
And a plate arranged on the front side of the mounting frame with the operation handle exposed.

Images