JP2015026515A - Switch structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch structure capable of securing stable electrical continuity.SOLUTION: A switch structure 1 includes a switch knob 2, and a pair of bus bars 4 connected to a bulb side and a power supply side, respectively. A conductive part 22 is formed by having a bulb-side conductive part 24, and a power supply-side conductive part 25. The bus bar 4 is constituted by having a bulb-side bus bar 41 connected to the bulb-side conductive part 24 and a power supply-side bus bar 42 connected to the power supply-side conductive part 25. In the bulb-side conductive part 24 and the power supply-side conductive part 25, a bulb-side curved surface part 241 and a power supply-side curved surface 251 are formed which are convex toward the bus bar 4 and formed in a three-dimensional curved surface along an oscillation direction Y and a longitudinal direction X, respectively. Along the bulb-side curved surface part 241 and the power supply-side curved surface 251, a bulb-side abutting surface part 411 and a power supply-side abutting surface part 421 are formed which have a recessed curved surface shape and are capable of abutting with the bulb-side curved surface part 241 and the power supply-side curved surface 251.

Description

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

  2. Description of the Related Art Conventionally, a vehicle is provided with an electrical device such as an indoor illumination lamp. For example, various switch structures for turning on and off the indoor illumination lamp have been proposed (see, for example, 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 provided at one end of a conductive spring. The contact is provided, and the contact is made to swing by operating the switch knob, so that the contact comes into contact with the bus bar accommodated in the housing when the contact faces the bus bar.

JP 2008-91212 A

  However, the conventional switch structure described in Patent Document 1 has a problem that since the area of the contact portion between the contact and the bus bar is small, the electrical resistance increases and the conduction is likely to be unstable.

  Accordingly, it is an object of the present invention to provide 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, the first conductive portion and the second conductive portion At least one of the portions is configured to be separable from the bus bar at the OFF position, and the first conductive portion and the second conductive portion are formed to have a curved surface portion that is convex toward the bus bar. The bus bar is formed with a concave curved surface along the curved surface portion and a contact surface portion capable of contacting the curved surface portion.

  According to the present invention, at least one of the first conduction portion and the second conduction portion is formed with a curved surface portion that is convex toward the bus bar, and the bus bar has a curved surface shape that is concave along the curved surface portion. Since the contact surface portion that can contact the portion is formed, the area where the curved surface portion and the contact surface portion abut at the ON position can be increased, the electric resistance is reduced, and the conduction stability is improved. Can be secured.

  Further, in the switch structure according to claim 1, the curved surface portion and the contact surface portion include a swing direction in which the switch knob swings, and an orthogonal direction orthogonal to the swing surface including the swing direction, It is preferable to have a three-dimensional curved surface along the two directions.

  According to such a configuration, the entire curved surface portion can be brought into contact with the abutting surface portion at the ON position, and the area of the surface where the curved surface portion and the abutting surface portion abut can be increased. Resistance becomes small and conduction can be made more stable.

  The switch structure according to claim 1 or 2, 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. Is preferred.

  According to such a configuration, since the conducting portion can be moved forward and backward in the pushing direction and is supported in the biased state, the curved surface portion and the abutting surface portion can be brought into contact with each other more reliably. The conduction can be further stabilized.

  Further, in the switch structure according to claim 3, at least one of the contact surface portions is formed with a convex portion that is convex toward the conducting portion, and the curved surface portion is connected to the ON position. When the position is switched to the OFF position, it is preferable that the ridge is a moderation mountain portion that climbs over the convex portion while contacting the convex portion.

  According to such a structure, the convex part formed convex toward the conduction | electrical_connection part is provided, and the curved surface part of a conduction | electrical_connection part is a convex part, contacting a convex part when an ON position and an OFF position are switched. Therefore, when the operation unit is operated, it is possible to obtain a moderation feeling by climbing the moderation mountain portion while contacting the convex portion, and to improve operability. .

  According to the switch structure of the present invention as described above, the conductive portion is formed with a curved surface portion that is convex toward the bus bar, and the bus bar is formed in a shape along the curved surface portion. Since the contact surface portion that can be contacted is formed, the area where the curved surface portion and the contact surface portion abut at the ON position increases, and the electrical resistance decreases, so that the stability of conduction can be ensured. it can.

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 a lighting state, (b) is a figure which shows a light extinction state. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2 showing the switch structure. It is a perspective view which shows the switch knob and bus bar in the said switch structure, (a) is a figure which shows a lighting state, (b) is a figure which shows a light extinction state. It is sectional drawing which shows the said switch knob and the said bus bar, (a) is the elements on larger scale of the arrow Va-Va sectional view in FIG. 2 (a), (b) is an arrow view in FIG.2 (b). It is the elements on larger scale of the Vb-Vb line cross section. It is a perspective view which shows the contact state in the ON position of the said switch knob and the said bus bar, (a) is a figure which shows the VIa-VIa line cross section of Fig.2 (a), (b) is FIG.2 (a). ) Is a cross-sectional view taken along line VIb-VIb.

  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 is defined as the 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 formed with a valve-side curved portion 241 that is convex toward the bus bar 4 and is formed in a three-dimensional curved shape along the swing direction Y and the longitudinal direction X. 25, a power-source-side curved surface portion 251 that is convex toward the bus bar 4 and formed in a three-dimensional curved surface shape along the swinging direction Y and the longitudinal direction X is formed. In the ON position of the switch knob 2, the valve side curved surface portion 241 contacts the valve side bus bar 41, and the power source side curved surface portion 251 contacts the power source side bus bar 42. Further, the power supply side curved surface portion 251 is provided closer to one side in the swing direction Y, and is separated from the power supply side bus bar 42 at the OFF position of the switch knob 2. Further, the valve-side curved surface portion 241 is a moderation mountain portion that abuts on a convex portion 412a provided on the valve-side bus bar 41 described later when the switch knob 2 is switched between the ON position and the OFF position and gets over the convex portion 412a. is there.

  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 supply side bus bar 42 connected to the power supply side conduction unit 25. The valve-side bus bar 41 is formed with a valve-side contact surface portion 411 that is concave along the valve-side curved surface portion 241 and that can contact the valve-side curved surface portion 241, and the power-supply-side bus bar 42 has a power-supply-side curved surface. A power supply side contact surface portion 421 that can be in contact with the power supply side curved surface portion 251 is formed along the concave portion 251. The valve-side contact surface portion 411 is formed convex toward the upper side in the pushing direction Z, and two convex portions 412a and 412b provided side by side along the swinging direction Y, and two convex portions 412a, 412b, and a recess 413 formed in a recess along the orthogonal direction X.

  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 the OFF position of the switch knob 2 will be described with reference to FIGS. In the ON position, as shown in FIGS. 4 (a), 5 (a), and 6, the conducting portion 22 swings to the other side in the swing direction Y, and the valve-side curved surface portion 241 contacts the valve side. The valve side bus bar 41 and the power source side bus bar 42 are brought into contact with the concave part 413 of the contact surface part 411 along the longitudinal direction X and the swinging direction Y, and the power source side curved surface part 251 is in contact with the power source side abutting surface part 421. Conducted. In the OFF position, as shown in FIGS. 4B and 5B, the conducting portion 22 swings to one side in the swinging direction Y, and the valve-side curved surface portion 241 moves to the valve-side contact surface portion 411. The contact between the valve side bus bar 41 and the power source side bus bar 42 is released by contacting the recess 413 and separating the power source side curved surface part 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 FIG. 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. In the middle of switching between the ON position and the OFF position, when the valve-side curved surface portion 241 of the valve-side conducting portion 24 gets over while being in contact with the convex portion 412a provided on one side in the swing direction Y of the valve-side bus bar 41. The spring 23 that urges the conduction portion 22 contracts and the conduction portion 22 moves to the operation portion 21 side. After overcoming the contraction of the spring 23, the conduction portion 22 moves from the operation portion 21 side to the bus bar 4 side. To do.

  According to the present embodiment as described above, the valve-side conductive portion 24 is formed with the valve-side curved surface portion 241 that protrudes toward the bus bar 4, and the power-supply-side conductive portion 25 is convex toward the bus bar 4. A power supply side curved surface portion 251 is formed, and the bus bar 4 is formed with a concave curved surface along the valve side curved surface portion 241 and a valve side contact surface portion 411 that can contact the valve side curved surface portion 241. Since the power supply side contact surface portion 421 that is concavely curved along the portion 251 and that can contact the power supply side curved surface portion 251 is formed, the area where the conductive portion 22 and the bus bar 4 abut at the ON position is increased. Since the electrical resistance is reduced, the stability of conduction can be ensured.

  Further, since the valve-side curved surface portion 241 and the power-source-side curved surface portion 251 are convex toward the bus bar 4 and are formed in a three-dimensional curved surface shape along the swinging direction Y and the longitudinal direction X, the ON position , The valve-side conductive portion 24 and the power-source-side conductive portion are brought into contact with the valve-side curved surface portion 241 and the power-source-side curved surface portion 251 along the longitudinal direction X and the swinging direction Y, so that the conductive portion 22 and the bus bar 4 Since the contact area can be increased and the electrical resistance can be reduced, conduction can be further stabilized.

  In addition, since the conducting portion 22 can be moved back and forth in the pushing direction Z by the spring 23 and is supported in an urged state, the valve side curved surface portion 241, the valve side contact surface portion 411, and the power source side curved surface portion 251 are supported. And the power-source-side abutting surface portion 421 can be brought into contact with each other more reliably, and conduction can be further stabilized.

  In addition, a convex portion 412a is formed on the valve-side contact surface portion 411, and the valve-side curved surface portion 241 is in contact with the convex portion 412a when the switch knob 2 is switched between the ON position and the OFF position. Since it is a moderation mountain portion that overcomes 412a, a sense of moderation can be obtained when the operation unit is operated to switch between the ON position and the OFF position, and operability can be improved.

  In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.

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

  Further, although the concave portion 413 is formed in the valve side contact surface portion 411 of the valve side bus bar 41, it is sufficient that the concave portion 413 is formed along at least the valve side curved surface portion 241. The surface portion 421 may be formed in the same shape. Further, if at least one of the valve-side conducting portion 24 and the power-side conducting portion 25 is provided so as to be separable from the bus bar 4 at the OFF position of the switch knob, even if a recess is formed in the power-side curved surface portion 251. Good.

  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 412a is formed on the valve-side bus bar 41. However, 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. In this case, 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, method and the like 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 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 curved surface portion (curved surface portion)
251 Power supply side curved surface (curved surface)
411 Valve side contact surface (contact surface)
421 Power supply side contact surface (contact surface)
412a Convex part

Claims (4)

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 first conductive portion and the second conductive portion are formed to have a curved surface portion that is convex toward the bus bar,
A switch structure, wherein the bus bar is formed with a concave curved surface along the curved surface portion and a contact surface portion capable of contacting the curved surface portion.   The curved surface portion and the contact surface portion have a three-dimensional curved surface along two directions, a swing direction in which the switch knob swings and an orthogonal direction perpendicular to the swing surface including the swing direction. The switch structure according to claim 1, wherein the switch structure is formed.   3. The switch structure according to claim 1, wherein the conductive portion is supported in a biased state toward the push direction and capable of moving forward and backward along the push direction with respect to the operation portion. . At least one of the contact surface portions is formed with a convex portion that is convex toward the conducting portion,
4. The curved surface portion is a moderation mountain portion that climbs over the convex portion while contacting the convex portion when the ON position and the OFF position are switched. 2. The switch structure according to item 1.

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