WO2015012299A1

WO2015012299A1 - Switch structure

Info

Publication number: WO2015012299A1
Application number: PCT/JP2014/069423
Authority: WO
Inventors: 秀樹山中; 良平落合
Original assignee: 矢崎総業株式会社
Priority date: 2013-07-26
Filing date: 2014-07-23
Publication date: 2015-01-29
Also published as: JP2015026514A

Abstract

Provided is a switch structure which is capable of maintaining stable conduction. The switch structure (1) comprises: a switch knob (2); and a pair of busbars (4) that are connected respectively at a valve side and a power source side. A conduction part (22) is formed by having a valve-side conduction part (24) and a power source-side conduction part (25). The busbars (4) are configured by having: a valve-side busbar (41) that connects to the valve-side conduction part (24); and a power source-side busbar (42) that connects to the power source-side conduction part (25). Sliding contact surfaces (241a, 251a) are formed in the surfaces at the busbar (4) sides of the valve-side conduction part (24) and the power source-side conduction part (25), and are in sliding contact with sliding contact surfaces (413, 422) of the busbars (4) in accordance with a pivoting movement of the switch knob (2).

Description

Switch structure

The present invention relates to a switch structure for switching between an ON position for conducting between a pair of bus bars respectively connected to a power supply side and a device side and an OFF position for releasing conduction.

Conventionally, a vehicle is provided with an electrical device such as an indoor lamp, and various switch structures for turning on and off the indoor lamp have been proposed (for example, see Patent Document 1).

The interior lighting for a vehicle described in Patent Document 1 includes a switch knob, a switch lever that supports the switch knob so as to be swingable, and a housing. The switch lever is operated by operating the switch knob. By moving, it has a conductive contact that contacts the bus bar accommodated in the housing, and the contact is urged toward the bus bar by a spring provided along a direction orthogonal to the direction in which the switch knob is operated, When the contact and the bus bar face each other, they are brought into contact with each other to be conducted.

JP 2008-91212 A

However, the conventional switch structure described in Patent Document 1 is used for a long time because an oxide film is gradually formed on the contact and bus bar surfaces, and the portion where the oxide film is formed becomes less conductive. In such a case, there is a problem that conduction between the contact and the bus bar tends to be unstable.

Therefore, the present invention aims at providing a switch structure capable of ensuring stable conduction, paying attention to the above problems.

In order to solve the above problems, the switch structure of the present invention includes a pair of bus bars connected to the power supply side and the device side, an ON position for conducting the pair of bus bars, and an OFF position for releasing the conduction. A switch knob provided so as to be swingable, the switch knob being operated to be pressed in order to switch between the ON position and the OFF position, and along a pressing direction in which the operation section is operated. And a conduction portion that is pressed against the pair of bus bars and is capable of conducting between the pair of bus bars by contacting the pair of bus bars, the conduction portion being in the ON position. A first conductive portion that contacts the bus bar connected to the power source side, and a second conductive portion that contacts the bus bar connected to the device side, and the first conductive portion and the second conductive portion At least one of the through portions is configured to be separable from the bus bar at the OFF position, and the first conducting portion and the second conducting portion are in sliding contact with the bus bar as the switch knob swings. It is characterized by having a sliding surface.

According to the present invention, since the first conducting portion and the second conducting portion are formed with the sliding contact surface that comes into sliding contact with the bus bar as the switch knob swings, the contact position between the conducting portion and the bus bar is determined. Even if an oxide film is formed, the oxide film can be removed by rubbing the formed oxide film each time the switch knob is switched between the ON position and the OFF position, and the conduction stability is maintained. can do.

Further, in the switch structure according to claim 1, it is preferable that the conducting portion is supported in a biased state that is movable forward and backward along the pushing direction with respect to the operation portion and that is directed toward the pushing direction. .

According to such a configuration, since the conducting portion is biased toward the bus bar, when the conducting portion is slidably contacted with the bus bar as the switch knob swings, the sliding contact is caused by the pressing force of the spring. The force applied is increased, and the oxide film can be removed more reliably.

3. The switch structure according to claim 1, wherein at least one of the pair of bus bars includes a convex portion formed convex toward the conducting portion, and a swing of the switch knob connected to the convex portion. A flat portion along the moving direction, and at least one of the first conductive portion and the second conductive portion protrudes toward the bus bar, and the ON position and the OFF position It is preferable that a peak portion that climbs over the convex portion while being in sliding contact with the convex portion is formed, and the sliding contact surface is formed on the surface of the peak portion.

According to such a configuration, since the convex portion and the flat portion are provided continuously along the swinging direction of the switch knob, when the operation portion is operated, the mountain portion slides on the convex portion. By getting over, you can get a sense of moderation and improve operability.

Further, in the switch structure according to claim 3, at least one of the first conduction part and the second conduction part in which the peak part is formed is separated from the peak part in a direction away from the bus bar. It is preferable that an extending inclined surface portion is formed, and at the ON position, the peak portion is in contact with the flat surface portion, and the inclined surface portion is in contact with the convex portion.

According to such a configuration, since the bus bar and the conductive portion abut at two points at the ON position, the electrical conductivity between them can be further improved. Furthermore, since the area where the bus bar and the conducting portion abut is increased, the electrical resistance between the bus bar and the conducting portion can be reduced, and the electrical conduction can be performed more stably.

According to the switch structure of the present invention as described above, since the sliding contact surface that slides on the bus bar as the switch knob swings is formed on the conductive portion, the contact portion between the conductive portion and the bus bar is oxidized. Even if a film is formed, the slidable contact surface is rubbed each time the switch knob is switched between the ON position and the OFF position, so that the oxide film can be removed and the conduction stability can be maintained.

It is a disassembled perspective view which shows the switch structure concerning one Embodiment of this invention. It is a perspective view which shows the said switch structure, (a) is a figure which shows ON position, (b) is a figure which shows OFF position. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2A showing the switch structure. 3A and 3B are cross-sectional views showing the switch structure, wherein FIG. 2A is a cross-sectional view taken along the line aa in FIG. 2A, and FIG. 2B is a cross-sectional view taken along the line bb in FIG. is there. It is a perspective view which shows the said switch structure, (a) is a figure which shows ON position, (b) is a figure which shows OFF position. It is a figure which shows the intermediate state in which the ON position and an OFF position are switched in the said switch structure.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. The switch structure 1 of the present embodiment is used, for example, as a switch structure that switches between a lighting state and a non-lighting state of a valve V assembled to a housing H connected to a power supply side connector C in an interior lighting of a vehicle. As shown in FIG. 1, the switch structure 1 includes a switch knob 2, a lens 3 that transmits the light of the bulb V into the vehicle, and a pair of bus bars 4 that are connected to the bulb side and the power source side, respectively. It is configured. Further, in the present embodiment, the position of the switch knob 2 when the pair of bus bars 4 are conducted is the ON position, and the position of the switch knob 2 when the pair of bus bars 4 is released is the OFF position. When the switch knob 2 is moved to the ON position, the valve V is turned on, and when the switch knob 2 is moved to the OFF position, the valve V is turned off. In the present embodiment, as shown in FIG. 1, the longitudinal direction of the bus bar 4 is the longitudinal direction X, which is indicated by an arrow X. Further, the swing direction of the switch knob 2 is defined as a swing direction Y and is indicated by an arrow Y. In the swing direction Y, the back side in FIG. 1 is defined as one side, and the near side in FIG. 1 is defined as the other side. Further, the direction in which the switch knob 2 is pushed in is defined as the pushing direction Z and is indicated by an arrow Z. Up and down in the arrow Z is based on FIG.

The switch knob 2 is provided so as to be in contact with the pair of bus bars 4 while being pressed by the bus bar 4 along the pushing direction Z and the operation unit 21 that is pushed in to switch between the ON position and the OFF position. The conductive portion 22 is configured to include a conductive portion 22 and a spring 23 that can be moved forward and backward along the pushing direction Z with respect to the operation portion 21 and that supports the conductive portion 22 in a biased state toward the pushing direction Z.

The operation portion 21 includes an operation surface portion 211 to be pushed in, a bearing hole 212 into which a swing shaft 32 to be described later is inserted, a locking claw 213 to be engaged with the conducting portion 22, and a contraction direction of the spring 23 in the pushing direction. And a spring support portion 214 that supports the spring 23 so as to be Z.

The conduction part 22 includes a valve-side conduction part 24 connected to a later-described valve-side bus bar 41, a power-side conduction part 25 connected to a later-described power-side bus bar 42, and Z of the valve-side conduction part 24 and the power-side conduction part 25. The valve side conducting part 24 and the power supply side conducting part 25 are arranged along the longitudinal direction X. The latching part 26 is provided on the upper side in the direction and the latching claw 213 of the operating part 21 is latched. Are arranged side by side.

The valve-side conducting portion 24 is connected to the locking portion 26 by extending from the valve-side peak portion 241 in the Z-direction downward direction along the swing direction Y and upward in the Z-direction. The power supply side conduction portion 25 includes a power supply side peak portion 251 protruding downward in the Z direction, and one of the swing direction Y from the power supply side peak portion 251. The power supply side inclined surface portion 252 that extends to the upper side in the Z direction and is connected to the locking portion 26 is formed in a cantilever shape. The pair of valve-side inclined surface portions 242 includes a valve-side inclined surface portion 242a extending to one side in the swing direction Y and a valve-side inclined surface portion 242b extending to the other side. Further, sliding

contact surfaces

241a and 251a that are in sliding contact with the bus bar 4 as the switch knob 2 swings are formed on the lower surfaces in the Z direction of the valve side peak portion 241 and the power source side peak portion 251.

The lens 3 is formed using a resin material or the like that transmits light. The lens 3 opens from the upper side to the lower side in the Z direction, and the assembly unit 31 to which the operation unit 21 of the switch knob 2 is assembled. And a swing shaft 32 that is provided inside and supports the operation unit 21.

The bus bar 4 includes a valve-side bus bar 41 connected to the valve-side conduction unit 24 and a power-side bus bar 42 connected to the power-side conduction unit 25. The valve-side bus bar 41 is formed to include a convex portion 411 that is convex upward in the pushing direction Z, and a flat surface portion 412 that is continuous with the other side of the swinging direction Y of the convex portion 411. The side bus bar 42 is formed to have a flat portion 421. A sliding contact surface 413 that slides on the sliding contact surface 241a when the switch knob 2 is switched from the ON position to the OFF position is formed on the upper surface in the Z direction of the valve-side bus bar 41 extending from the convex portion 411 to the flat surface portion 412. In addition, a slidable contact surface 422 that is in slidable contact with the slidable contact surface 251a is formed on the upper surface of the flat portion 421 in the Z direction.

Next, an example of the assembly method will be described with reference to FIGS. First, the spring 23 is inserted into the spring support portion 214 of the operation portion 21 of the switch knob 2, and the locking claw 213 of the operation portion 21 and the locking portion 26 of the conduction portion 22 are locked. Subsequently, the switch knob 2 in which the conducting portion 22 is locked is inserted into the assembly portion 31 of the lens 3, and the swing shaft 32 is fitted into the bearing hole 212 of the operation portion 21. As described above, the switch knob 2 is supported in a swingable manner. Next, the bus bar 4 is assembled from the valve side end of the housing H, and then the valve V is assembled. Such a housing H is fitted into the lens 3 to which the switch knob 2 is assembled, and the assembly is completed as shown in FIG.

Next, the state of the switch knob 2 and the bus bar 4 at the ON position and OFF position of the switch knob 2 will be described with reference to FIGS. In the ON position, as shown in FIGS. 2 (a), 4 (a), and 5 (a), the conduction portion 22 swings to the other side in the swing direction Y, and the valve side peak portion 241 The valve side bus bar 41 and the power source side bus bar 42 are electrically connected by contacting the flat surface part 412, the valve side inclined surface part 242 a contacting the convex part 411, and the power source side peak part 251 contacting the flat surface part 421. In the OFF position, as shown in FIGS. 2 (b), 4 (b), and 5 (b), the conduction portion 22 swings to one side in the swing direction Y, and the valve side peak portion 241 is flat. The contact between the valve side bus bar 41 and the power source side bus bar 42 is released by contacting the portion 412 and separating the power source side peak portion 251 from the power source side bus bar 42.

Next, the state of the switch knob 2 and the bus bar 4 when the switch knob 2 is switched from the ON position to the OFF position will be described with reference to FIGS. When the switch knob 2 is switched from the ON position shown in FIG. 4A to the OFF position shown in FIG. 4B, the other side in the swing direction Y of the operation surface portion 211 is pushed in, and the switch knob 2 is operated. The part 21 swings to one side of the swinging direction Y, and the conduction part 22 swings to one side of the swinging direction Y as the operating part 21 swings. When switching from the OFF position to the ON position, one side of the swing direction Y of the operation surface unit 211 is pushed in, the operation unit 21 swings to the other side of the swing direction Y, and the operation unit 21 swings. Accordingly, the conduction portion 22 swings to the other side in the swing direction Y. As the conductive portion 22 swings, the sliding

contact surfaces

241a and 251a of the conductive portion 22 and the sliding

contact surfaces

413 and 422 of the bus bar 4 come into sliding contact. Further, in the middle of switching between the ON position and the OFF position, when the valve side mountain portion 241 of the valve side conduction portion 24 gets over the convex portion 411 of the valve side bus bar 41, the conduction portion 22 moves to the operation portion 21 side. By contracting the spring 23, the pressing force by the spring 23 is increased, and the sliding contact surface 241a and the sliding contact surface 413 are in strong sliding contact.

According to the present embodiment as described above, the valve-side conducting portion 24 and the power-supply-side conducting portion 25 are slidably contacted with the sliding

contact surfaces

413 and 422 of the bus bar 4 as the switch knob 2 swings. , 251a is formed, so that even if an oxide film is formed at the contact position between the conduction portion 22 and the bus bar 4, the formed oxidation is performed each time the switch knob 2 is switched between the ON position and the OFF position. By rubbing the film, the oxide film can be removed and the stability of conduction can be maintained.

Further, since the conducting portion 22 is urged by the spring 23, when the conducting portion 22 is slidably contacted with the bus bar 4 as the switch knob 2 swings, it is slid by the pressing force of the spring 23. The force becomes stronger and the formed oxide film can be removed more reliably.

Further, the valve-side bus bar 41 is formed with a convex portion 411 and a flat portion 412 formed along the swing direction Y, and the valve-side conduction portion 24 gets over the valve-side mountain portion while sliding on the convex portion 411. Since 241 is formed, a sense of moderation can be obtained every time the switch knob 2 is operated, and operability can be improved.

In the ON position of the switch knob 2, the valve-side conducting portion 24 and the valve-side bus bar 41 are contacted at two points: a valve-side peak portion 241 and a flat portion 412, and a valve-side inclined surface portion 242a and a convex portion 411. Since they are in contact with each other, the electrical conductivity between them can be further improved. Furthermore, since the area where the valve-side conducting portion 24 and the valve-side bus bar 41 are in contact with each other is increased, the electrical resistance between the conducting portion 22 and the bus bar 4 can be reduced, and more stable conduction can be achieved.

It should be noted that the present invention is not limited to the above-described embodiment, and includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.

For example, in the above-described embodiment, the switch structure 1 is used for an interior lighting of a vehicle, but may be used for a switch structure that switches between an ON state and an OFF state of another electrical device.

Moreover, although the conduction | electrical_connection part 22 was urged | biased by the spring 23, the bus bar 4 may be urged | biased by the conduction | electrical_connection part 22 side with the spring. Further, it may be biased by biasing means other than the spring.

Further, the convex portion 411 is formed on the valve-side bus bar 41, but at least one of the valve-side conducting portion 24 and the power-side conducting portion 25 is provided to be separated from the bus bar 4 at the OFF position of the switch knob 2. If so, a convex portion may be formed on the power supply side bus bar 42, or a convex portion may be formed on both the valve side bus bar 41 and the power supply side bus bar 42.

In addition, the best configuration and method for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the present invention has been illustrated and described primarily with respect to particular embodiments, but is not limited to the embodiments described above without departing from the scope and spirit of the present invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.

Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

DESCRIPTION OF SYMBOLS 1 Switch structure 2 Switch knob 3 Lens 4 Bus bar 21 Operation part 22 Conduction part 23 Spring 24 Valve side conduction part (2nd conduction part)
25 Power supply side conduction part (first conduction part)
41 Valve side bus bar 42 Power source side bus bar 241 Valve side peak part 242 Valve side inclined surface part 411 Convex part 412

Plane part

241a, 251a Sliding contact surface

Claims

A pair of bus bars respectively connected to the power supply side and the device side, and a switch knob provided swingably over an ON position for conducting the pair of bus bars and an OFF position for releasing the conduction,
The switch knob is pressed against the pair of bus bars along a pressing direction in which the operation unit is operated to be pressed to switch between the ON position and the OFF position, and the operation unit is operated, A conductive portion capable of conducting between the pair of bus bars by contacting the pair of bus bars,
The conduction part has a first conduction part that abuts on a bus bar connected to the power supply side and a second conduction part that abuts on a bus bar connected to the apparatus side at the ON position, At least one of the one conduction part and the second conduction part is configured to be separable from the bus bar at the OFF position,
The switch structure according to claim 1, wherein each of the first conduction portion and the second conduction portion is formed to have a sliding contact surface that comes into sliding contact with the bus bar as the switch knob swings.
2. The switch structure according to claim 1, wherein the conducting portion is supported in a biased state toward the pushing direction and capable of moving forward and backward along the pushing direction with respect to the operation portion.
At least one of the pair of bus bars is formed to have a convex portion that is convex toward the conducting portion, and a flat portion that is connected to the convex portion and extends in the swinging direction of the switch knob. ,
At least one of the first conductive portion and the second conductive portion protrudes toward the bus bar, and when the ON position and the OFF position are switched, the convex portion is in sliding contact with the convex portion. The switch structure according to claim 1, wherein a mountain portion that goes over the portion is formed, and the sliding contact surface is formed on a surface of the mountain portion.
At least one of the first conduction part and the second conduction part in which the peak part is formed is formed with an inclined surface part extending from the peak part in a direction away from the bus bar,
4. The switch structure according to claim 3, wherein, in the ON position, the peak portion is in contact with the flat portion, and the inclined surface portion is in contact with the convex portion.