This application is based on Japanese Patent Application No. 2013-251172 filed with the Japan Patent Office on Dec. 4, 2013, the entire contents of which are incorporated herein by reference.
The present invention relates to a switch and in particular, a switch that switches contacts by a 3-directional operation.
Conventionally, one example of the switch that switches contacts by the 3-directional operation is a vehicle-mounted switch that switches a vehicle from automatic driving to manual driving, and then shifts gears.
An example of such a vehicle-mounted switch is a switch unit that detects movement of a target to be detected in a first direction, and movement of the target to be detected in a second direction orthogonal to the first direction, the switch unit including a first moving body that moves in the first direction in cooperation with the movement of the target to be detected in the first direction, a first board having a first detection unit that detects the position of the first moving body in the first direction, a second moving body that moves in the second direction in cooperation with the target to be detected in the second direction orthogonal to the first direction, and a second board having a second detection unit that detects the position of the second moving body in the second direction (refer to Japanese Unexamined Patent Publication No. 2012-059603).
However, as shown in FIGS. 4 and 5 of Japanese Unexamined Patent Publication No. 2012-059603, in order to detect outputs in two axial directions, the above switch requires independent molded plates 231 and 331 for respective axes. In particular, fixed terminals 242 need to be bent such that the molded plate 231 and the molded plate 331 form a substantially right angle after insert-molding, making it difficult to acquire high positioning accuracy to cause a variation in operational characteristics.
In the above switch, since the fixed terminals 242 are bent such that the molded plate 231 and the molded plate 331 form a substantially right angle, the volume of the switch disadvantageously increases, making it difficult to reduce the size of the switch.
A switch according to an aspect of an embodiment of the present invention includes a circuit board stored in a housing, the circuit board having front and back faces from which at least a pair of fixed contacts are exposed;
at least one operating member reciprocatively attached to the housing, the operating member having a movable touch piece configured to slidably contact the fixed contact exposed from one face of the circuit board; and at least one different operating member reciprocatively attached to the housing, the operating member having a movable touch piece configured to slidably contact the fixed contact exposed from the other face of the circuit board.
An object of the present invention is to provide a thin switch having a small variation in operational characteristics. Embodiments of a switch according to the present invention will be described with reference to attached drawings of
As shown in
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The first and second fixed contacts 31a, 32a of the first and second fixed contact terminals 31, 32 are not necessarily exposed from the both faces of the circuit board 30, and in order to improve the insulation property, the first and second fixed contacts 31a, 32a may be insert-molded so as to be only exposed from one face of the circuit board 30.
As shown in
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The cover 80 has a planar shape capable of covering the base, and is provided with an operating hole 81 in its ceiling face and a support protrusion 82 having an inverted C-shaped cross section for preventing an escape of the support plate 37 of the circuit board 30. The cover 80 is further provided with a pair of substantially U-shaped engaging claws 83 on edges of its opposed sides.
A method of assembling the above-mentioned components will be described below.
First, in the state where the second coil spring 70 is engaged with the storage groove 61 of the slide button 60, and the guide slits 61a, 61b of the slide button 60 are engaged with the guide ribs 36a, 36b of the circuit board 30, respectively, the circuit board 30 is positioned with respect to the storage groove 11 of the base 10. Simultaneously, the first to fifth terminal portions 31b to 35b of the first to fifth fixed contact terminals 31 to 35 insert-molded to the circuit board 30 are inserted into the terminal storage recess 15 of the base 10, and the pair of latching pawls 37a of the support plate 37 are engaged with the pair of positioning protrusions 15a provided on the bottom face of the terminal storage recess 15 for positioning. This causes the first to fifth terminal portions 31b to 35b to protrude into the connecter receiving portion 19.
Then, the first coil spring 50 is engaged with the positioning projection 12a on the bottom face of the engaging recess 12 of the base 10, and the push button 40 to which the movable touch piece 42 is swaged is engaged with the engaging recess 12. This allows the pair of elastic contacts 42a to come into contact with and separate from the first and second fixed contacts 31a, 32a insert-molded to the circuit board 30. Thereby, the operating rib 63 of the slide button 60 can slide in the protective rib 14 of the base 10. Then, the cover 80 is positioned from above the base 10, and the engaging claws 83 are engaged with the engaging protrusions 17 of the base 10 to prevent slip-off. At this time, the operating protrusion 41 of the push button 40 operably protrudes from the operating hole 81 of the cover 80. The support protrusion 82 protrudingly provided on the ceiling face of the cover 80 presses the support plate 37 on the circuit board 30 to prevent a rattle.
Next, a method of operating the switch will be described. As an operational example, a not-shown passenger vehicle is switched from automatic driving to manual driving by using a shift lever, and then gears are shifted.
First, before the operation, as shown in
Then, when the shift lever of the passenger vehicle is tilted, the shift lever presses the operating protrusion 41 of the push button 40 downward against the force of the first coil spring 50, thereby bringing the elastic contacts 42a, 42a into contact with the first and second fixed contacts 31a, 32a, and the first and second fixed contact terminals 31, 32 into conduction to output a signal. As a result, automatic driving is switched to manual driving.
Subsequently, when the shift lever is rotated to one side with the shift lever being tilted, the operating rib 63 engaged with the shift lever slides to one side against the force of the second coil spring 70. Thus, the elastic contacts 62a, 62a attached to the slide button 60 come into contact with the fourth and fifth fixed contacts 34a, 35a, bringing the fourth and fifth fixed contact terminals 34, 35 into conduction to output a signal and shift up the gear. Subsequently, when the operating force is decreased, the shift lever automatically returns to a neutral position. However, when the shift lever is rotated again in the above-mentioned direction, the elastic contacts 62a, 62a similarly come into contact with the fourth and fifth fixed contacts 34a, 35a, bringing the fourth and fifth fixed contact terminals 34, 35 into conduction to output a signal and further shift up the gear.
When the operating force is decreased, the shift lever automatically returns to the neutral position. Then, when the shift lever is rotated in the direction opposite to the above-mentioned direction, the elastic contacts 62a, 62a come into contact with the third and fifth fixed contacts 33a, 35a, bringing the third and fifth fixed contact terminals 33, 35 into conduction to output a signal and shift down the gear. Thereafter, when the operating force is decreased, the shift lever automatically returns to the neutral position again.
Subsequently, when the shift lever is returned to the original position, pressing onto the push button 40 is released, the push button 40 is pushed upward by the force of the first coil spring 50 to separate the elastic contacts 42a, 42a from the first and second fixed contacts 31a, 32a, thereby switching manual driving to automatic driving.
As shown in
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As shown in
The fourth and fifth fixed contacts 34a, 35a of the fourth and fifth fixed contact terminals 34, 35 are not necessarily exposed from the both faces of the circuit board 30, and to improve the insulation property, the fourth and fifth fixed contacts may be exposed from only one face of the circuit board 30.
As shown in
The cover 80 has a planar shape capable of covering the base 10, and has a pair of operating holes 81, 84 on its ceiling face, and a support protrusion 82 having an inverted C-shaped cross section for preventing an escape of the support plate 37 of the circuit board 30. The cover 80 is further provided with a pair of substantially U-shaped engaging claws 83, 83 on edges of its opposed sides.
A method of assembling the above-mentioned components will be described below.
First, the circuit board is positioned with respect to the storage groove 11 of the base 10. Simultaneously, the first to fifth terminal portions 31b to 35b of the first to fifth fixed contact terminals 31 to 35 insert-molded to the circuit board 30 are inserted into the terminal storage recess 15 of the base 10, and the pair of latching pawls 37a of the support plate 37 are engaged with the pair of positioning protrusions 15a on the bottom face of the terminal storage recess 15. Thereby, the first to fifth terminal portions 31b to 35b protrude into the connecter receiving portion 19. The first and second coil springs 50, 51 are engaged with the first and second engaging recesses 12, 20 of the base 10, respectively, and the first and second push buttons 40, 45, to which the movable touch pieces 42, 47 are swaged, are engaged with the engaging recesses 12, 20, respectively. As a result, the pair of elastic contacts 42a, 42a of the first push button 40 can come into contact with and separate from the third and fourth fixed contacts 34a, 35a insert-molded to the circuit board 30, and the pair of elastic contacts 47a, 47a of the second push button 45 can come into contact with and separate from the first fixed contact 31a as a common fixed contact, and the second fixed contact 32a or the third fixed contact 33a. Then, the cover 80 is positioned from above the base 10, and the engaging claws 83 are engaged with the respective engaging protrusions 17 of the base 10 to prevent slip-off. At this time, the operating protrusion 41, 46 of the first and second push buttons 40, 45 operably protrude from the operating hole 81, 84 of the cover 80, respectively. The support protrusion 82 protruding from the ceiling face of the cover 80 presses the support plate 37 of the circuit board 30 to prevent a rattle.
Next, a method of operating the switch will be described.
First, before the operation, as shown in
When the operating protrusion 41 of the first push button 40 is pushed downward against the force of the first coil spring 50, the elastic contacts 42a come into contact with the fourth and fifth fixed contacts 34a, 35a, bringing the fourth and fifth fixed contact terminals into conduction to output a signal.
Subsequently, when the second push button 45 is pressed down with the first push button 40 being pressed down, the movable touch piece 47 is lowered against the force of the second coil spring 51, and the pair of elastic contacts 47a of the second push button 45 come into contact with the first and third fixed contacts 31a, 33a, bringing the first and third fixed contact terminals into conduction to output a signal. Then, when the pressing onto the first and second push buttons 40, 45 is released, the first and second push buttons 40, 45 return to their original positions due to forces of the first and second coil springs 50, 51.
As shown in
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As shown in
The first and second fixed contacts 31a, 32a of the first and second fixed contact terminals 31, 32 are not necessarily exposed from both faces of the circuit board 30, and to improve the insulation property, the first and second fixed contacts 31a, 32a may be exposed from only one face of the circuit board 30.
As shown in
The second slide button 65 has a planar shape so as to engage with the second slide groove 22 via the notch 22a of the base 10, and has a storage groove 66 capable of storing the second coil spring 71 on its inner face, and guide slits 66a, 66b engaging with the guide ribs 38a, 38b of the circuit board 30, respectively, on both sides of the storage groove 66. A second movable touch piece 67 having a pair of elastic contacts 67a, 67a is swaged below the guide slits 66a, 66b. The elastic contacts 67a have a twin-contact structure to improve the contact reliability. An operating rib 68 protrudes from an outer face of the second slide button 65.
The cover 80 has a planar shape capable of covering the base 10, and has a support protrusion 82 having an inverted C-shaped cross section for preventing an escape of the support plate 37 of the circuit board 30. The cover 80 is further provided with a pair of substantially U-shaped engaging claws 83 on edges of its opposed sides.
A method of assembling the above-mentioned components will be described below.
First, first and second coil springs 70, 71 are engaged with the storage grooves 61, 66 of the first and second slide buttons 60, 65, respectively. Then, in the state where the guide slits 61a, 61b, and the guide slits 66a, 66b of the first and second slide buttons 60, 65 are engaged with the guide ribs 36a, 36b, and the guide ribs 38a, 38b of the circuit board 30, respectively, the circuit board 30 is positioned with respect to the storage groove 11 of the base 10. Simultaneously, the first to fifth terminal portions 31b to 35b of the first to fifth fixed contact terminals 31 to 35 insert-molded to the circuit board 30 are inserted into the terminal storage recess 15 of the base 10, and the pair of latching pawls 37a, 37a of the support plate 37 are engaged with the pair of positioning protrusions 15a, 15a on the bottom face of the terminal storage recess 15. As a result, the first to fifth terminal portions 31b to 35b protrude into the connecter receiving portion 19. Thereby, the operating ribs 63, 68 of the first and second slide buttons 60, 65 are slidably attached to the base 10. Thus, the pair of elastic contacts 62a, 67a of the first and second movable touch pieces 62, 67 provided on the first and second slide buttons 60, 65, respectively, can come into contact with and separate from the first to fifth fixed contacts 31a to 35a insert-molded to the circuit board 30. Subsequently, the cover 80 is positioned from above the base 10, and the engaging claws 83 are engaged with the respective engaging protrusions 17 of the base 10 to prevent slip-off. At this time, the support protrusion 82 protruding from the ceiling face of the cover 80 presses the support plate 37 of the circuit board 30 to prevent a rattle.
Next, a method of operating the switch will be described.
First, before the operation, as shown in
When the second slide button 65 is slid against the force of the second coil spring 71, the elastic contacts 67a come into contact with the second fixed contact 32a, bringing the first and second fixed contact terminals 31, 32 into conduction to output a signal.
Subsequently, when the first slide button 60 is slid with the second slide button 65 being slid (
In the above-mentioned embodiments, the two push buttons 40, 45 and the two slide buttons 60, 65 are simultaneously used. However, it is not necessary to use both the buttons at the same time, and it is needless to say that one of the push buttons or the slide buttons may be used as needed.
As a matter of course, a plurality of push buttons or slide buttons as operating members may be arranged on the front and back faces of the circuit board 30.
As a matter of course, embodiments of the present invention may be any switch other than the above-mentioned switch. Further, the switch according to embodiments of the present invention may be applied to any device other than passenger vehicles.
In an embodiment of the present invention, the switch may include a first operating member reciprocatively attached to the housing, the operating member having a movable touch piece configured to slidably contact the fixed contact exposed from one face of the circuit board; and a second operating member reciprocatively attached to the housing, the operating member having a movable touch piece configured to slidably contact the fixed contact exposed from the other face of the circuit board.
According to an embodiment of the present invention, since at least a pair of fixed contacts are exposed from the front and back faces of the circuit board, there is no need to bend any fixed terminals after molding, as in the conventional example, hence obtaining high positioning accuracy of the fixed contacts to achieve a switch with no variation in operational characteristics.
Further, according to an embodiment of the present invention, since there is no need to bend the circuit board as in the conventional example, the volume of the switch does not increase, achieving a thin switch.
In another embodiment of the present invention, the first operating member may reciprocate across a surface of the housing, and the second operating member may reciprocate along the surface of the housing.
The embodiments realize a switch that can address a complicated 3-directional operation.
In still another embodiment of the present invention, both of the first and second operating members may reciprocate across the surface of the housing.
The embodiment realizes a switch that can be operated by only a pushing operation.
In yet another embodiment of the present invention, both of the first and second operating members may reciprocate along the surface of the housing.
The embodiment realizes a switch that can be operated by only a sliding operation.
Number | Date | Country | Kind |
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2013-251172 | Dec 2013 | JP | national |