JP2003288823A - Switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make compact a switching device equipped with a display mechanism and make a center part of a handle a display part. <P>SOLUTION: A switching mechanism storage part 19a is provided at one side of the inside of the switching device 1 to store a switching mechanism. A display mechanism storage part 20a is provided at the other side to store the display mechanism 20. The switching mechanism 19 transmits movement of the handle 12 to a movable piece 41 through a spring holder 61 to changeover a circuit. The display mechanism 20 lights a light source 71 according to a state of the circuit. Light of the light source 71 is guided toward a center part of the handle 12 by a light guide body P. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch device having a swingable handle.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 2000-25158.
The switch device described in Japanese Patent No. 0 is known. Such a switch device includes a switch main body and a handle swingably supported on the front side of the switch main body. The switch body accommodates connection terminals for electrically and mechanically connecting the wiring, and
Fixed contacts are provided on the connection terminals. In addition, a movable piece that rotates about the back end is used as a fulcrum in the switch body. With the rotation of the movable piece, the movable contact provided on the movable piece is brought into contact with and separated from the fixed contact. It is opened and closed. Further, a spring storage portion having an open rear surface is provided on the back side of the handle, and the coil storage is stored in the spring storage portion. The rear end of this coil spring is engaged with the front end of the movable piece either directly or through a snap-fitting part attached to the rear end, and the handle is rocked. By doing so, the coil spring flexes as a whole and pushes the front end of the movable piece back and forth to generate a proper operation feeling during operation, and after operation, presses the movable piece to hold its position. It is supposed to do. Further, in such a switch device, a configuration is known in which a light source is housed and a display mechanism that lights the light source when a contact is opened or closed is provided.
Furthermore, in order to improve the appearance and the like, there is known a configuration in which a display unit that emits light from the light source is arranged in the central portion of the switch device.

[0003]

However, in the structure provided with the display mechanism having the central portion of the switch device as the display portion in addition to the switch mechanism for opening and closing the contacts, these switch mechanism and display mechanism are provided in the central portion of the switch device. Therefore, there is a problem that it becomes difficult to arrange components of the display mechanism.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a switch device having a switch mechanism and a display mechanism and having a display portion at a central portion.

[0005]

According to another aspect of the present invention, there is provided a switch device including a switch main body and a handle swingably supported on the front side of the switch main body, and a display unit provided at a central portion on the front side. A case in which three switch boxes for one JIS can be mounted along the longitudinal direction of the switch box when viewed from the front; a movable piece that is swung when the handle is swung and a contact piece that is moved apart when the movable piece is swung. A switch mechanism housed in the switch body, the movable piece and the contact being displaced from the center in the width direction of the switch body to one side along the axial direction of the swing of the handle;
A light source is provided, and the light source has a display mechanism that is housed in the switch body while being displaced from the center of the width direction of the switch body to the other side along the axial direction of the swing of the handle; And a light guide body having an emission part facing the display part.

In this configuration, in the switch device in which three switches can be attached to the switch box for one JIS, the switch mechanism and the display mechanism are arranged on the opposite sides, so that the space in the case is effectively used. The miniaturization is facilitated and the workability is improved, and the central part of the switch device can be used as the display part by using the light guide.

For example, the light source is a neon tube or a light emitting diode, and the light guide is a prism lens. Further, the display mechanism can be linked with the operation of the steering wheel or the like, and can be lit and displayed in either the on state or the off state, or can be lit and displayed in different states such as different colors in the on state and the off state.

According to a second aspect of the present invention, there is provided the switch device according to the first aspect.
In the switch device described above, a facing portion formed on the back side of the handle in an arc shape along a trajectory of swinging of the handle; and a facing portion provided on the switch body side facing the facing portion; It is equipped with.

In this structure, when a force is applied from the handle side, the opposing portion abuts against the opposed portion, so that the force is suppressed from being exerted on other members such as the switch mechanism, and the other members are suppressed. Is protected. Further, by forming the facing portion in an arc shape along the trajectory of the handle swing, the handle can swing even when a force is applied to the handle.

Incidentally, for example, the facing portion is provided at an end portion on the back side of a cylindrical spring accommodating portion for supporting the spring of the switch mechanism, and the facing portion is integrally formed with a member constituting the switch body. It

According to a third aspect of the present invention, there is provided the switch device according to the first aspect.
Alternatively, in the switch device according to 2, the switch mechanism includes a spring extensible and supported on the back side of the handle, a base portion attached to an end portion on the back side of the spring, and a pair of protrusions protruding from the base portion to the back side. An arm portion and a spring receiving member provided with a guide portion located at the tip of each arm portion, and a movable piece having a pair of guide abutting portions abutting on the respective guide portions are provided, and The diameter is formed to be equal to or smaller than the outer dimension of the guide contact portions, and the inner diameter of the guide portions is formed to be larger than the inner diameter of the guide contact portions.

In this structure, the outer diameter of the guide portions provided at the distal ends of the pair of arms of the spring receiver is set to be equal to or smaller than the outer dimension of the guide contact portions of the movable piece. When the movable piece is sandwiched between the pair of arm portions, the spring retainer is prevented from falling off the movable piece. Further, since the inner diameters of the guide portions are formed larger than the inner diameters of the guide contact portions, the resistance due to the sliding contact between the guide portion and the guide contact portion is suppressed, and the movable piece moves smoothly.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a switch device of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of a switch device of the present invention, FIG. 2 is a sectional view showing the same switch device, and FIG. 3 is a side view showing the same switch device. 4 is a bottom view showing the same switching device, FIG. 5 is a front view showing the same switching device, FIG. 6 is an end view showing the same switching device, and FIG. 7 is a bottom view showing the handle of the same switching device. 8A and 8B are explanatory views of a part of the display mechanism of the same switch device. FIG. 8A is a side view with the switch turned on, FIG. 8B is a side view with the switch turned off, and FIG. Is a front view, (d) is an end view, and FIG. 9 is a front view of a switch using the same switch device.

In FIGS. 1 to 6, reference numeral 1 denotes a switch device, which is also called a switch unit, and can be mounted in a switch box for one JIS (not shown) side by side in the longitudinal direction, that is, in the vertical direction. It is a switch device 1 which is an embedded wiring device. That is, the switch device 1 is attached to an unillustrated mounting frame made of metal or the like called a support, and this mounting frame is formed in an opening formed in a wall plate, which is a construction material, by using a switch box or a press fitting. The mounting, and further, the indoor side is covered with a frame-shaped mounting plate 5 and a switch cover 6 serving as an operating portion shown in FIG. 9, thereby forming a switch 7 which is an embedded wiring device.

The switch device 1 is a three-way switch which is a so-called tumbler switch (contact point reversal structure switch), and is swingably supported on the switch body 11 and on the upper side as the front side of the switch body 11. And a handle 12 which is an operating body, and the switch main body 11 and the handle 12 form a case 13. In addition, below,
The switch device 1 will be described in the vertical direction with the front side facing upward (the arrow X direction shown in FIGS. 1 and 2) and placed on a plane, that is, the rear side is the lower side, and the front rear direction The longitudinal direction of the switch main body 11 orthogonal to the front side is defined as the front side (the arrow Y direction shown in FIG. 2) and the rear side, and the width direction of the switch main body 11 is defined as the one side direction (the arrow Z direction shown in FIG. 1) and the other side direction. . The switch body 11 is provided with a substantially box-shaped case body 14 made of white synthetic resin whose upper side is opened as a case opening 14a, and a cover 15 made of white synthetic resin covering the upper side of the case body 14. , The case body 14 and the cover 15 are a pair of front and rear fasteners made of metal such as stainless steel.
16 is crimped and fixed, and a storage portion 17 is formed inside. Further, as shown in FIG. 2, the accommodating portion 17 has wiring coupling terminal portions 17a formed at both ends in the longitudinal direction, that is, the front-rear direction, and as shown in FIG. In the portion, the partition wall portion 18 and the like partition in the width direction, that is, both side directions, and a switch mechanism housing portion 19a located on one side and a display mechanism housing portion 20a located on the other side are formed. The switch mechanism storage unit 19a stores the switch mechanism 19, which can also be called a switch mechanism unit, and the display mechanism storage unit 20a stores the display mechanism 2.
0 is stored.

Further, on the lower surface of the case body 14, as shown in FIGS. 2 and 4, four electric wire insertion ports 21 and two release holes 22 are formed. The wire coupling terminal portion 17a inside the wire insertion port 21 is provided with chain-like metal fittings 24 in which leaf springs are bent, and a release hole 22 is provided.
A release body 25, which is also called a release button and is formed of a synthetic resin, is arranged inside the container so as to be vertically movable. Also, the two chain-shaped metal fittings 24 located on the rear side
, A common terminal 26 is combined and connected, and the two chain-like metal fittings 24 located on the front side are connected with a first terminal 27 and a second terminal 28 as terminals which are load terminals, respectively. There is. Therefore, the electric wire inserted into the electric wire insertion port 21 located on the rear side is sandwiched between the chain fitting 24 and the common terminal 26 to be connected in a chain shape and electrically connected. Further, the electric wire inserted into the electric wire insertion port 21 located on the front side is sandwiched between the chain metal fitting 24 and the first terminal 27 or the second terminal 28 to be connected in a chain shape and electrically connected. It Further, by inserting a jig such as a flat-blade screwdriver into the release hole 22 and pushing the release body 25 to deform the chain fitting 24, the chain connection can be released and the connected electric wire can be removed.

Further, the common terminal 26 is a wiring coupling terminal portion 17a.
To the lower part of the switch mechanism housing portion 19a, and is bent in a substantially V-shape that widens upward to form a movable piece bearing portion 31. Further, the first terminal 27 and the second terminal 28 are respectively extended from the wiring coupling terminal portion 17a to above the movable piece bearing portion 31 of the switch mechanism housing portion 19a, and upward so as to expand each other. A first fixed contact receiving portion 27b and a second fixed contact receiving portion 2 which are slightly inclined toward
8b is formed. Then, these fixed contact receiving portions 27
Fixed contacts 33, 33 as body side contacts are attached to b, 28b.

Further, in the switch mechanism housing portion 19a, there is arranged a movable piece 41 which is located between these fixed contacts 33 and which is a protruding piece constituting the switch mechanism 19. The movable piece 41 is attached to the movable piece body 42 in the form of a flat plate made of a metal plate having conductivity, and the front and rear surfaces of the movable piece body 42 by caulking or the like at the intermediate portion in the longitudinal direction. A disk-shaped movable contact 44 as a contact is provided. The movable piece main body 42 has a base end portion 45 serving as a rotating shaft formed at a lower end portion which is a horizontal end portion, and a width toward the base end portion 45 at an intermediate portion in the longitudinal direction. A pair of guide abutting portions 46 on both sides, which increase in size, are formed. Also, the base end 45
Is formed thinner than the central portion by crushing one side or both sides. Furthermore, the movable contact 44 is arranged so that at least a part thereof is located above the line connecting the guide contact portions 46.

The movable piece main body 42 has a base end portion 45 in contact with a valley portion of the movable piece bearing portion 31, and is rotatably supported about the base end portion 45 as an axis. By the rotation, the movable contact 44 comes into contact with the fixed contact 33 and the switch is closed, that is, the first terminal 27 and the common terminal 26 are electrically connected, or the second terminal 28 and the common terminal 26. And are electrically connected and the circuit can be switched.

The cover 15 of the switch body 11 has a substantially box-like shape whose lower surface is opened so as to communicate with the case opening 14a. Further, the upper surface has a dimension in the front-rear direction and the width direction with respect to the lower surface opening. A small opening 49 is formed. In addition, as shown in FIG. 2, the opening 49 is located farther in the front-rear direction than on the lower side, that is, the inner side of the storage section 17.
The upper side, that is, the side facing the outer side is expanded in a stepwise manner to have a large width dimension, and a handle regulating portion 49a facing the outer side and a component holding portion 49b facing the inner side are formed. Further, as shown in FIG.
Triangular engagement part located in the center part in the longitudinal direction, with the width dimension becoming smaller toward the top at both edges in the width direction.
50 are formed.

As shown in FIGS. 1 to 3 and 5 to 7, the handle 12 is provided with a handle body 51 integrally formed of blue or yellow synthetic resin. Main body 52 in the shape of a box with an open bottom
And a pair of operation parts 53 located in front of and behind the main body part 52. Further, a metal handle receiving metal fitting 55 is attached to each of the operation portions 53. Also, the main body
As shown in FIGS. 1 and 7, a cylindrical spring accommodating portion 56 having a vertical direction as an axial direction, an upper surface closed, and a lower surface opened is provided on one side portion in the front-rear direction central portion of 52. It is projected downward. The spring accommodating portion 56 includes a spring main body accommodating portion 56a having a circular hole shape, and a substantially square tubular receiving accommodating portion 56b that is connected to the lower side of the spring main body accommodating portion 56a by expanding its diameter. ing. Further, tongue-shaped claw portions 58, which are handle support portions, are formed on both sides of the main body portion 52. The lower end portion of the claw portion 58 is formed integrally with the main body portion 52, and the main body portion 52
It is provided so as to project upward in a state of being inclined in a direction slightly separated from. Further, the claw portion 58 has an elastically deformable triangular plate shape whose dimension in the front-rear direction decreases toward the upper side, and the tip portion, that is, the upper end portion is an engagement receiving portion 59. The width dimension of the claw portion 58 is formed to be larger than the width dimension of the opening 49 of the cover 15 in the state where no force is applied from the outside. further,
The main body 52 includes the other side of the inner surface, that is, the spring storage portion.
A light guide mounting portion 60, which is a through hole having a parallelogram shape in a slanted end view, is formed to connect the side where the 56 is not formed and the central portion of the upper surface. And this light guide mounting portion 60
The opening at the upper end of the display device 60a is located in the center of the front side of the switch device 1. Furthermore, this light guide mounting portion 6
At 0, a light guide P having a light guiding property is attached.
The light guide P is made of a glass or resin prism having a parallelogram shape in a side view. In addition, the light guide mounting portion 60 is integrally provided with a handle main body 51 with a holding portion 60b that holds and holds the lower surface side of the light guide P.

When the handle 12 is pressed into the opening 49 of the cover 15 from above, the claws 58 on both sides elastically deform and pass through the edge of the opening 49. When the portion 58 is returned and deformed, the engagement receiving portion 59
The handle 12 is engaged with 50 to be prevented from coming off, and the handle 12 is swingably supported by the cover 15 with the engaging portion serving as a rotation shaft having axial directions in both sides. Further, in the state where the handle 12 is attached to the cover 15, the swing range of the handle 12, that is, the turning angle is regulated by the handle regulation portion 49a of the cover 15. Further, in this state, the lower surface of the light guide P is
It faces the upper side of the display mechanism housing portion 20a.

Further, the spring storage portion 56 of the handle 12
An opposing portion 56c having an arc shape is formed at the lower end portion of the handle 12 along the locus of rotation of the handle 12. Further, the case body 14 of the switch body 11 is formed with an opposed portion 14c that forms an arcuate step and faces the opposing portion 56c with a predetermined gap.

Also, the spring storage portion of the handle 12
A coil spring S as a spring is accommodated mainly in the spring body accommodating portion 56a of 56. The coil spring S is a spring formed by winding an elastically deformable metal wire, and is an elastic body that elastically expands and contracts in the axial direction and elastically deforms in a direction inclined from the axial direction. I am configuring. The coil spring S constitutes a reversing mechanism of the contact portion and also generates a contact force of the contact portion. Also, the spring compartment 56
The inner diameter of the coil spring S is equal to or slightly smaller than the outer diameter of the coil spring S.
The coil spring S by inserting it into the handle
Tentatively fixed to 12. A rib or the like for temporarily fixing the coil spring S may be provided inside the spring accommodating portion 56.

Further, a spring receiving member 61 constituting the switch mechanism 19 is mounted on the lower end portion of the coil spring S, and a part of the spring receiving portion 56b of the spring storing portion 56 is stored so that it can be moved vertically. You are being guided. And
The spring receiving member 61 is formed into a substantially U shape by bending a single metal plate, and has a substantially rectangular plate-shaped base 62 and a pair of both sides bent from both sides of the base 62. The arm 63 is provided. The width of each arm 63 becomes smaller toward the tip side, which is the lower side, and a guide portion 64, which is a U-shaped or triangular groove-shaped notch, is formed at the tip. There is. The movable piece 41 is attached to the guide portions 64 on both sides.
The guide abutting portions 46 on both sides are brought into contact with each other or engaged and pushed down, and in this state, the movable contact 44 is positioned between the guide portions 64 on both sides. Then, in this state, as shown in FIG. 1, the width dimension of the movable piece 41, that is, the outer dimension of the guide contact portions 46 on both sides is L1, and the guide contact portion 4 is
L2 is the distance between the 6 parts, that is, the inner diameter, and L is the width of the spring bracket 61, that is, the outer size between the guide parts 64.
3. L1> L3, where L4 is the distance between guide portions 64, that is, the inner diameter is L4.
And so as not to come off from each other, and L4>
It becomes L2, and the arm 63 of the spring receiving member 61 and the movable piece 41 can move smoothly without sliding contact. In addition, the base
62, facing upwards, for example by burring,
Spring fitting part for temporary fixing protruding in a cylindrical shape on the upper side
(Spring guide) 65 is formed. The outer diameter of the spring fitting portion 65 is slightly larger than the inner diameter of the coil spring S, and the lower end portion of the coil spring S is fitted and held.

On the other hand, the display mechanism 20 accommodated in the display mechanism accommodating portion 20a is provided with a light source 71 which is a neon tube, as shown in FIG. 1, FIG. 2 and FIG. And this light source 71
Is attached to the circuit board 73 which also serves as a light source support. The circuit board 73 has a substantially U-shape in plan view and surrounds the spring storage portion 56 so that the handle 12
Attached to the handle 12 and swings together with the handle 12. Then, in this way, the circuit board 73 is handled by the handle 12
In the state where the light source 71 is attached to the light source 71, the light source 71 faces the lower surface which is the incident surface of the light guide P attached to the handle 12. Also,
On this circuit board 73, an electronic component 75 used for lighting the light source 71 is mounted on the upper surface side or the like. Further, on the lower surface of the circuit board 73, contact pieces 81, 82, 83, 84 and the like that constitute a switch for turning on and off the light source 71 are attached. And, for example, the contact piece 83 is a common terminal at all times.
The contact piece 84 contacts the second terminal while the movable contact 44 is in the off state in which the movable contact 44 is separated from the fixed contact 33 of the first terminal 27 while contacting the second terminal.
The light source 71 is turned on by touching the light source 28.

Then, in the switch device 1 thus constructed, one to three units are attached to a support (not shown), the support is attached to a wall surface using a switch box or the like, and further, as shown in FIG. By covering the indoor side with the mounting plate 5 and further engaging the handle receiving metal fitting 55 of the handle 12 to attach the switch cover 6, the three-way switch 7 with an indicator light is constructed. In addition,
Each switch cover 6 is a so-called wide type that has a large area that covers substantially the entire surface of the switch 7 except for the frame-shaped mounting plate 5, and each switch cover 6 is located at a substantially central portion in front view. The switch cover side display portion 6a having a light transmitting property is provided, and the back side of the switch cover side display portion 6a faces the display portion 60a of the switch device 1 directly or through a prism lens or the like. It is supposed to do.

Therefore, in this state, the operating portion 53 of the handle 12 is pushed through the switch cover 6 and the handle 12 is swung to move the movable piece 41 through the coil spring S and the spring receiving member 61. It is possible to open and close the circuit by pushing and rotating to bring the movable contact 44 into and out of contact with the fixed contact 33, and to confirm the on / off state of the circuit by the light from the light source 71 via the switch cover side display section 6a. ing.

According to the switch device 1 of the present embodiment, the so-called wide type switch cover 6 is attached to the switch 7 which is an embedded wiring device that can be attached to three JIS switch boxes. Regarding the switch device 1 which is a switch unit with an indicator light,
Since the switch mechanism 19 including the movable piece 41 and the movable contact 44 is arranged off-center when viewed from the front, it is possible to arrange the components other than the switch mechanism 19 such as the display mechanism 20 such as the light source 71 on the opposite side. become. Therefore, as compared with the configuration in which the switch mechanism 19 and the display mechanism 20 are vertically stacked in the center when viewed from the front, the occupying portion of the display mechanism 20 in the height direction is unnecessary, and the overall height dimension is easy. It can be made smaller and the construction workability can be improved. That is, by arranging the switch mechanism 19 and the display mechanism 20 on opposite sides, the space in the case 13 can be effectively used and the switch device 1 can be easily used.
Can be miniaturized.

Further, since the switch device 1 is provided with the light guide P which is a prism lens, the light emitted from the light source 71 which is offset by the light guide P is provided in the central portion of the front surface of the switch device 1. Light can be efficiently emitted from the display unit 60a, and the switch cover side display unit 6a of the switch cover 6 can be efficiently illuminated.

Further, by setting the display portion 60a of the light guide P which is the prism lens as large as possible, it is possible to cope with various types of light sources such as neon tubes and light emitting diodes, and the versatility is improved.

Further, according to the switch device 1 of the present embodiment, the handle 12 and the spring storing portion of the handle 12 are provided.
In the switch device 1 including the spring S inserted in the spring 56, the spring receiving member 61, the movable piece 41, etc., the end of the cylindrical spring accommodating portion 56 into which the spring S is inserted has an R shape, that is, the handle. An opposing portion 56c having an arcuate curved surface along the locus of rotation of the handle 12 is formed at the tip of the lower end of 12 and the opposed portion of the switch body 11 is provided at a predetermined interval in the opposing portion 56c. Since 14c is formed, it is possible to surely operate the handle 12 and suppress a failure against an external impact or the like. That is, when the handle 12 is operated, a large force may be applied as an external impact force, and if an excessive impact force is directly applied to the spring S or the spring receiving member 61, parts may be damaged. Here, in the present embodiment, the facing portion 56c is formed on the handle 12, and the switch body 1 is provided on the facing portion 56c with a predetermined interval.
Since the opposed portion 14c is formed in 1, the end of the cylindrical portion of the handle 12 can be used as a so-called stopper against external impact force, and damage to other parts such as the switch mechanism 19 can be suppressed.
Further, the facing portion 56c and the facing portion 14c are the handle 12
Since it has an R shape that follows the trajectory of
The distance between the facing portion 56c and the facing portion 14c can be set smaller than that in the case where the end portion of the handle 1 is flat, and the handle 1
The swinging operation of the handle 12 is possible even when a force is applied to 2.

According to the switch device 1 of the present embodiment,
The handle 12, the spring S inserted in the spring storing portion 56 of the handle 12, the spring receiving member 61, and the movable piece.
In the switch device 1 including the 41 and the like, a spring bracket 61 having a substantially U-shape is used, and the width dimension of the spring bracket 61 is set to be equal to or less than the width dimension of the movable piece 41. Compared to the structure in which the spring receiving member and the movable piece are linked, the movement of the handle 12 can be reliably transmitted to the moving piece 41, and the spring receiving member 61 and the movable piece can be connected.
It can be surely linked with 41 without disconnecting. That is, a spring bracket 61 having a pair of arm portions 63 each having a guide portion 64 at its tip portion and having a substantially U-shape.
In addition, the guide portions 64 are brought into contact with guide contact portions 46 provided on both sides of the intermediate portion in the longitudinal direction of the movable piece 41 in a shoulder shape, so to speak, the spring receiving 61 is the movable contact 44 of the movable piece 41. Since it is a structure that straddles, the moving distance of the movable contact 44 of the movable piece 41 can be easily ensured to be large, and at least a part of the spring receiving member 61 is stored in the receiving storing portion 56b of the spring storing portion 56 of the handle 12. Because of the configuration
The operation of the handle 12 can be reliably transmitted to the spring receiving member 61, and the operation of the handle 12 can be efficiently and reliably transmitted to the movable piece 41 via the spring receiving member 61 without play. Therefore, the small movement of the handle 12 can be surely transmitted to the movable piece 41, and the small movement of the handle 12 can largely move the movable contact 44 of the movable piece 41, so that a so-called contact gap and contact follow can be largely secured. Even if the large-sized switch cover 6 having a small angle is used, the switch 7 that operates reliably can be provided. Here, since the width dimension L1 which is the so-called shoulder width of the movable piece 41 is set to be equal to or larger than the width dimension L3 of the spring receiving piece 61, the spring receiving piece 6 is moved from the movable piece 41.
The fall of 1 can be suppressed, and the force of the handle 12 can be reliably transmitted to the movable piece 41. Also, spring payment
Width L of the inner dimension of the guide portion 64 of 61, that is, the arm portion 63
4 is configured to be larger than the width dimension (inner shoulder dimension) L2 of the portion of the movable piece 41 that is sandwiched by the guide portion 64 and the arm portion 63, thereby suppressing sliding contact (seriously) between the spring receiving member 61 and the movable piece 41. Then, smoothly move the spring receiver 61 and the movable piece 41,
The operation of the handle 12 can be made smooth.

In the above embodiment, the switch device 1 has been described as a so-called three-way switch, but it may be applied to a one-way switch for turning on / off of conduction.

[0036]

According to the switch device of the first aspect,
With regard to the switch device that can be attached to three switch boxes for one JIS, by arranging the switch mechanism and the display mechanism on opposite sides, the space in the case can be effectively used, the size can be easily reduced, and the workability can be improved. By using the light guide, the central part of the switch device can be used as the display part.

According to the switch device of the second aspect, in addition to the effect of the first aspect, when the force is applied from the handle side, the facing portion comes into contact with the faced portion, so that the switch mechanism and the like are not affected. It is possible to suppress the application of force to the member and protect other members. Further, the facing portion is formed in an arc shape along the trajectory of the handle swing, so that the handle can swing even when a force is applied to the handle.

According to the switch device of the third aspect, in addition to the effect of the first or second aspect, the outer diameter dimension of the guide portions provided at the distal end portions of the pair of arm portions of the spring receiver is
Since the outer dimensions of the guide contact portions of the movable piece are smaller than each other, it is possible to prevent the spring piece from falling off from the movable piece when the movable piece is sandwiched by the pair of arm portions of the spring piece. Further, since the inner diameters of the guide parts are formed larger than the inner diameters of the guide contact parts, the resistance due to the sliding contact between the guide parts and the guide contact parts is suppressed, and the movable piece is moved smoothly. You can

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a switch device of the present invention.

FIG. 2 is a cross-sectional view showing the same switch device.

FIG. 3 is a side view showing the above switch device.

FIG. 4 is a bottom view showing the above switch device.

FIG. 5 is a front view showing the above switch device.

FIG. 6 is an end view showing the above switch device.

FIG. 7 is a bottom view showing a handle of the above switch device.

FIG. 8 is an explanatory diagram of a part of the display mechanism of the above switch device. (a) side view with switch on (b) side view with switch off (c) front view (d) end view

FIG. 9 is a front view of a switch in which the above switch device is used.

[Explanation of symbols]

1 switch device 11 Switch body 12 handles 13 cases 14c Opposed part 19 Switch mechanism 20 display mechanism 41 Moving piece 44 Moving contacts as contacts 46 Guide contact part 56c Opposite part 60a display 61 Spring receipt 62 base 63 Arm 64 Guide part 71 light source P light guide Coil spring as S spring

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiromi Yasumoto             4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Toshiba             Inside Litec Co., Ltd. (72) Inventor Masayuki Kawashima             2-32-5, Higashi-Nippori, Arakawa-ku, Tokyo             Shinko Manufacturing Co., Ltd. F-term (reference) 5G035 AA08 CA01 CB04 DA07 JA01                       JB02 JC01                 5G052 AA15 AA21 BB03 HA01 HA30                       HC01

Claims (3)

[Claims] 1. A switch main body and a handle swingably supported on the front side of the switch main body, a display portion is provided in the central portion on the front side, and a switch box for one JIS has a front view of the switch box. A case to which three pieces can be attached along the longitudinal direction of the handle; a movable piece that is swung with the swing of the handle, and a contact that is brought into contact with and separated from the swing of the movable piece. A switch mechanism housed in the switch main body with a position displaced to one side from the center in the width direction of the switch main body along the axial direction of the swing of the switch; Along with, a display mechanism housed in the switch body with a position displaced from the center of the width direction of the switch body to the other side; and a light guide body having an incident part facing the light source and an emitting part facing the display part. Equipped with A switch device characterized by being. 2. A handle is provided on the back side of the handle, the facing portion being formed in an arc shape along the trajectory of swinging of the handle; and the facing portion provided on the switch body side facing the facing portion. The switch device according to claim 1, wherein the switch device is provided. 3. The switch mechanism includes a spring extensible and supported on the back side of the handle, and a base portion attached to the end portion of the spring on the back side.
Movable with a pair of arms protruding from the base to the back side, a spring receiving member provided with guide portions located at the tip of each arm portion, and a pair of guide abutting portions abutting on the respective guide portions. The outer diameter dimension of the guide portions is less than or equal to the outer dimension of the guide contact portions, and the inner diameter dimension of the guide portions is larger than the inner diameter dimension of the guide contact portions. The switch device according to claim 1, wherein the switch device is a switch device.