EP2793245A1 - Push switch - Google Patents
Push switch Download PDFInfo
- Publication number
- EP2793245A1 EP2793245A1 EP14161183.0A EP14161183A EP2793245A1 EP 2793245 A1 EP2793245 A1 EP 2793245A1 EP 14161183 A EP14161183 A EP 14161183A EP 2793245 A1 EP2793245 A1 EP 2793245A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- knob
- contact point
- movable
- push
- board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 description 10
- 206010016173 Fall Diseases 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- VYQRBKCKQCRYEE-UHFFFAOYSA-N ctk1a7239 Chemical compound C12=CC=CC=C2N2CC=CC3=NC=CC1=C32 VYQRBKCKQCRYEE-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs
- H01H13/32—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs one end of spring being fixedly connected to the stationary or movable part of the switch and the other end reacting with a movable or stationary rigid member respectively through pins, cams, toothed, or other shaped surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/058—Actuators to avoid tilting or skewing of contact area or actuator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/01—Application power window
Definitions
- the present invention relates to a push switch.
- Fig. 6A and Fig. 6B are diagrams for explaining the configuration of a push switch according to a conventional example represented by Japanese Patent Laid-Open Publication No. 2001-243850 .
- a movable board 104 having a movable contact point 104a is provided in a case 101 configured by assembling a cover 102 and a pole board 103 to be movable forward/backward in an operating direction of a knob 107 (upper-lower direction in Figs. 6A and 6B ).
- the movable board 104 is positioned right under the knob 107 in the case 101, and an upper portion thereof is engaged to leg portions 108A and 108B extending downward from the knob 107 by an urging force acting on the movable board 104 from a spring Sp.
- the movable board 104 is also pushed by the leg portions 108A and 108B of the knob 107 to move downward in the side of the pole board 103.
- the movable contact point 104a is provided to project from a side face of the movable board 104, and makes push-contact with a fixed contact point 103a by an urging force of an unillustrated spring in a direction vertical to an operating direction of the knob 107, wherein the fixed contact point 103a is arranged to be lateral to the movable board 104.
- the fixed contact point 103a is provided on a support wall 109 extending upward from the pole board 103, and is provided along a longitudinal direction (upper-lower direction in the figure) of the support wall 109 over a predetermined length.
- the support wall 109 is provided with a step portion 109a projecting closer to the movable board 104 than the fixed contact point 103a at a lower portion of the pole board 103 in the side of a bottom wall portion 103c. Therefore, when the knob 107 is pushed down from a reference position showed in Fig. 6A to move to an operation position shown in Fig. 6B , the movable contact point 104a gets on the step portion 109a, so that a contact state of the movable contact point 104a with the fixed contact point 103a is eliminated.
- the operation of the knob 107 is detected when the movable contact point 104a gets on the step portion 109a to bring in a non-contact state between the movable contact point 104a and the fixed contact point 103a.
- the movable board 104 (movable contact point 104a) positioned right under the knob 107 is moved forward/backward in the same direction as the operating direction of the knob 107 to connect or disconnect the movable contact point 104a and the fixed contact point 103a.
- the present invention is made in view of the above-described problems in the conventional push switch, and an object of the present invention is to provide a push switch that can thin a thickness of the push switch in an operating direction of a knob.
- a push switch comprises a fixed contact point, a movable contact point that movably makes contact with the fixed contact point, and a knob that causes the movable contact point in contact with the fixed contact point to slide thereon by a push operation of the knob, thereby connecting/disconnecting the movable contact point and the fixed contact point, wherein a sliding direction of the movable contact point is set to a radial direction to the push direction of the knob.
- the sliding direction of the movable contact point in contact with the fixed contact point is set to the radial direction of the push direction of the knob, it is not necessary to ensure a space for the movable contact point to slide, in the push direction of the knob. Accordingly, it is possible to thin the thickness of the push switch in the operating direction of the knob as compared to the conventional push switch in which the movable contact point slide in the push direction of the knob.
- a cover 6-side is described as “upward”
- a pole board 7-side is described as “downward”
- a push switch 2-side is described as “forward”
- a swinging switch 4-side is described as “backward” in Fig. 1A as needed.
- a switch device 1 is configured such that plural switches 2, 3 and 4 are provided in a case 5 formed by assembling the cover 6 and the pole board 7.
- the switch 2 is a push switch (hereinafter, referred to as "push switch 2") that switches on/off by a push operation of a knob 8, and the push switch 2 is provided with the knob 8, a movable board 9 that is operated by the knob 8, a movable contact point 9a that is provided in the movable board 9, and fixed contact points 7a that are provided in the pole board 7.
- push switch 2 a push switch that switches on/off by a push operation of a knob 8
- the push switch 2 is provided with the knob 8, a movable board 9 that is operated by the knob 8, a movable contact point 9a that is provided in the movable board 9, and fixed contact points 7a that are provided in the pole board 7.
- the knob 8 is supported by a cylindrical support wall portion 61 projecting upward from an upper surface of the cover 6 to be movable in the upper-lower direction.
- the push switch 2 when the knob 8 is operated to be pushed, the movable board 9 moves in a direction (axis line Y direction) vertical to the operating direction (axis line X direction) of the knob 8 by a leg portion 83 extending from the knob 8, and at this time, when the movable contact point 9a provided on the movable board 9 slides on the upper surface of the fixed contact point 7a, the push switch 2 switches on/off.
- the knob 8 has a push portion 81 that is pushed at the time of switching on/off the push switch 2, and the push portion 81 includes an upper wall portion 810 formed in a substantially rectangular shape in a plan view and a peripheral wall portion 811 surrounding a peripheral edge of the peripheral wall portion 810 over an entire periphery thereof.
- a guide wall 82 guiding the movement of the knob 8 in the upper-lower direction and the leg portion 83 transmitting the operation of the knob 8 to the movable board 9 are provided inside the peripheral wall portion 811, and the knob 8 is supported by the support wall portion 61 in a state of inserting the support wall portion 61 in the side of the cover 6 between the guide wall 82 and the peripheral wall portion 811.
- the support wall portion 61 is provided to project upward from the cover 6 to surround an opening 62 formed in the cover 6, and includes side wall portions 612 and 613 extending in the front-back direction of the switch device 1 along a side edge of the opening 62, and side wall portions 614 and 615 extending in the right-left direction (width direction) of the switch device 1 along a side edge of the opening 62.
- the side wall portions 612 and 613 are provided in parallel to each other, and end portions of the side wall portions 612 and 613 in the backward side are connected to each other by the side wall portion 615.
- a mounting wall 616 on which a plate spring 26 of a heart cam 25 which will be described later is mounted is provided in a front end of the side wall portion 613 to be in a position offset closer to the inside than the side wall portion 613, and the side wall portion 613 and the side wall portion 614 are connected through the mounting wall 616.
- the mounting wall 616 is provided in parallel to the side wall portions 612 and 613, and ensures a space S1 between the side wall portion 612 and the mounting wall 616 to be able to insert the leg portion 83 into, which will be described later and forms a space S2 between the peripheral wall portion 811 of the knob 8 and the mounting wall 616 to be able to accommodate a lock pin 27 of the heart cam 25 and the plate spring 26.
- the guide wall 82 with which the knob 8 is provided includes a wall portion 821 arranged along the side wall portion 615 in the backside of the support wall portion 61, and wall portions 822 and 823 extending in a direction vertical to the wall portion 821 from both ends of the wall portion 821.
- the guide wall 82 is formed in a reverse C-letter shape in a cross sectional view.
- a projection 821a is provided in the halfway of the wall portion 821 in the longitudinal direction to project backward in the side of the side wall portion 615.
- the projection 821a is engaged to a guide groove 615a formed on an inner side surface of the side wall portion 615 in a state where the knob 8 is assembled in the cover 6.
- the projection 821a in the side of the knob 8 and the guide groove 615a in the side of the side wall portion 615 are respectively provided along the upper-lower direction. Therefore, when the knob 8 is pushed to move downward in the side of the pole board 7, the projection 821a moves along the guide groove 615a, and thereby the movement in the backside of the knob 8 in the upper-lower direction is guided.
- Wall portions 822 and 823 extend along the side wall portions 612 and 613 inside the side wall portions 612 and 613 of the support wall portion 61, and are provided with opening portions 822a and 823a in central parts thereof in the longitudinal direction to penetrate through the wall portions 822 and 823 in the thickness direction.
- the opening portions 822a and 823a are respectively formed to have a predetermined length h (refer to Fig. 3C ) along the side wall portions 612 and 613 in the upper-lower direction, and engagement portions 612b and 613b that are provided on an inner side surface of the side wall portions 612 and 613 in the support wall portion 61 are positioned to the opening portions 822a and 823a in a state where the knob 8 is assembled in the cover 6.
- urging forces of springs Sp1 and sp2 act on the knob 8, and the knob 8 is regularly urged in a direction (upper direction in the figure) of falling down from the support wall portion 61.
- the opening portions 822a and 823a are respectively formed to have a predetermined length h (refer to Fig. 3C ) in the upper-lower direction in the side wall portions 612 and 613, even if the knob 8 is operated to move downward in the side of the pole board 7, the engagement portions 612b and 613b do not interfere with an upper edge 822a2 of the opening portion 822a. Therefore, at the time the knob 8 moves downward in the side of the pole board 7, the movement of the knob 8 is not interrupted by the engagement portions 612b and 613b.
- the leg portion 83 in a substantially rectangular shape in a cross sectional view is formed to be integral with a front end of the wall portion 822.
- the leg portion 83 extends linearly toward the downward side in the side of the pole board 7, and a tip end portion 831 thereof makes contact with the movable board 9 in the case 5 in a state where the knob 8 is supported by the support wall portion 61.
- a guide projection 83a engaging to a guide groove 612a of the side wall portion 612 is provided on an opposing surface of the leg portion 83 to the side wall portion 612
- a guide groove 83b engaging to a guide projection 614a of the side wall portion 614 is provided on an opposing surface of the leg portion 83 to the side wall portion 614.
- the guide projection 83a and the guide groove 83b in the side of the leg portion 83, and the guide groove 612a and the guide projection 614a in the side of the support wall portion 61 are respectively provided in the upper-lower direction.
- the guide projection 83a in the side of the leg portion 83 and the guide projection 614a in the side of the support wall portion 61 respectively move along the guide grooves 612a and 83b, thereby the movement of the leg portion 83 (front side of the knob 8) is guided in the upper-lower direction.
- the leg portion 83 extending downward in the side of the pole board 7 from the knob 8 moves forward/backward in an axial direction of an axis line X1 (refer to Fig.2 ) in association with an operation of the knob 8.
- the knob 8 is pushed downward in the side of the pole board 7, the leg portion 83 moves in the same direction (downward in the side of the pole board 7) as that of the knob 8, and the tip end portion 831 in contact with the movable board 9 moves the movable board 9 in a direction vertical to the axis line X1 (axis line Y direction).
- two guide mechanisms configured by the guide projections (83a and 614a) and the guide grooves (612a and 83b) are provided, which prevents the leg portion 83 from moving downward in the side of the pole board 7 in a state of being inclined to the axis line X1 at a push operation of the knob 8.
- a spring support portion 24 that projects downward in the side of the pole board 7 is provided inside the guide wall 82.
- One end of the spring Sp1 is mounted on the spring support portion 24 to be inserted around it, and the other end of the spring Sp1 is mounted to be inserted around a spring supporting portion 64 formed integrally with the cover 6.
- the spring Sp1 is provided along the push direction (axis line X direction) of the knob 8 to exert an urging force in a direction (upper direction in the figure) of causing the knob 8 to fall down from the support wall portion 61 on the knob 8.
- the leg portion 83 extending downward in the side of the pole board 7 from the knob 8 is positioned in the forward side of the knob 8 in the front-back direction of the switch device 1.
- the leg portion 83 is provided along the push direction (axis line X1 direction) of the knob 8, and is provided in parallel to the spring Sp1 provided along the axis line X.
- the leg portion 83 projects closer to the downward side in the side of the pole board 7 than the peripheral wall portion 811, and the tip end portion 831 thereof through which the opening 62 of the cover 6 penetrates is provided with an inclined surface 831a that makes contact with the contact portion 92 of the movable board 9.
- the inclined surface 831a is provided at the backside of the leg portion 83 in the front-back direction of the switch device 1, and the inclined surface 831a is inclined by a predetermined angle ⁇ to the operating direction (axis line X1) of the knob 8.
- the tip end portion 831-side of the leg portion 83 has a width W in the front-back direction of the switch device 1 that is narrower toward the downward side in the side of the pole board 7, and the leg portion 83 causes the inclined surface 831a provided in the tip end portion 831 to make contact with the contact portion 92 of the movable board 9 from the upper side in the upper-lower direction of the switch device 1.
- the movable board 9 is provided to be movable forward/backward in a direction (axis line Y direction) vertical to the operating direction (axis line X/X1 direction) of the knob 8 by a terminal holding portion 71.
- a position of the contact point P between the inclined surface 831a of the leg portion 83 and the contact portion 92 of the movable board 9 changes in the axis line Y direction, and thereby, a position of the movable board 9 in the axis line Y direction changes in association with the operation of the knob 8.
- the movable board 9 is provided with a rectangular main body portion 91 in a plan view, and the contact portion 92 that makes contact with the leg portion 83 as described above is provided in one end 91a of the main body portion 91 at the forward side in the longitudinal direction.
- the contact portion 92 is formed to project forward from the one end 91a of the main body portion 91, and has a width W2 narrower than a width W1 of the main body portion 91.
- an upper surface of the contact portion 92 at the tip end side is formed as a contact surface 92a having an arc-shaped outer periphery in a cross sectional view, and the inclined surface 831a of the leg portion 83 makes contact with the contact surface 92a from the upper side.
- arm portions 93 extending in the same direction as that of the contact portion 92 from the one end 91a of the main body portion 91 are provided in both sides of the contact portion 92.
- the arm portions 93 are columnar members extending linearly in the longitudinal direction of the main body portion 91, and engagement portions 93a are provided in the tip end portions of the arm portions 93 to project outward from the main body portion 91 in the width direction.
- a columnar projection 94 is provided in the other end 91b of the main body portion 91 at the opposite side to the contact portion 92.
- the projection 94 projects backward of the switch device 1 from the central part of the main body portion 91 in the width direction, and one end of the spring Sp2 is mounted on the outer periphery to be fitted around it.
- the other end of the spring Sp2 is mounted to be fitted around a projection 78 provided in a holding portion 77 in the side of the pole board 7, and the spring Sp2 is, when the movable board 9 is assembled in the pole board 7, provided at a compression state between the main body portion 91 and the holding portion 77.
- the movable board 9 is pushed to the forward side of the switch device 1 by the urging force acting from the spring Sp2 to engage the engagement portions 93a of the aforementioned arm portions 93 to engagement grooves 75a of guide plates 75, thus preventing the movable board 9 from falling down from the guide plates 75.
- the contact portion 92 of the movable board 9 makes contact with the inclined surface 831a of the leg portion 83 from the axis line Y direction by the urging force acting from the spring Sp2, and the spring Sp2 moves the knob 8 upward in the figure, and at the same time, exerts the urging force in the direction of moving the position of the contact point P between the inclined surface 831a and the contact portion 92 to the forward side (left side in the figure) of the switch device 1.
- the urging force of the spring Sp2 acts on the forward side of the knob 8, in which the leg portion 83 is provided, in the direction of moving the knob 8 in the upper direction in the figure (direction of causing the knob 8 to fall down from the support wall portion 61).
- a support wall portion 614b is provided forward of the tip end portion 831 of the leg portion 83 along the tip end portion 831.
- the support wall portion 614b extends on an extension line of the side wall portion 614 of the support wall portion 61 in the case 5, which prevents the side of the tip end portion 831 of the leg portion 83 from being inclined to the axis line X1 by the urging force of the spring Sp2 causing the contact portion 92 of the movable board 9 to make push-contact with the inclined surface 831a.
- the support wall portion 614b also acts as a guide at the time the leg portion 83 moves forward/backward in the axis line X1 direction.
- a lower part of the main body portion 91 in the side of the pole board 7 is formed in a hollow shape, and a spring holding portion 95 is provided in the central part of the main body portion 91 in the longitudinal direction.
- An accommodation groove 95a is formed in the central part of the spring holding portion 95 along the width direction of the main body portion 91, and the movable contact point 9a is accommodated in the accommodation groove 95a.
- the movable contact point 9a is formed by bending one sheet of metallic plate, and has a substantial U-letter shape in a cross sectional view. As shown in Fig. 4B , a concave portion 9a1 that is engaged to the spring Sp3 is formed in the central part of the movable contact point 9a in the width direction.
- One end of a spring Sp3 projecting downward from the spring holding portion 95 makes contact with the central part of the concave portion 9a1 in the width direction, and the other end of the spring Sp3 is inserted in a cylindrical spring holding hole 95b provided in the spring holding portion 95.
- the movable contact point 9a is movable in the upper-lower direction by the spring Sp3 accommodated in the spring holding hole 95b, and a lower surface of the movable contact point 9a is caused to make push-contact with the fixed contact points 7a provided in the side of the pole board 7 by an urging force acting from the spring Sp3.
- the fixed contact points 7a in the pole board 7 are provided in parallel to each other to be spaced in the width direction of the switch device 1, and extend linearly in the movement direction (axis line Y direction) of the movable board 9.
- the fixed contact points 7a are formed to be integral with the terminal holding portion 71 of the pole board 7 by insert molding, and in the terminal holding portion 71, the fixed contact points 7a are exposed on an upper surface of a projecting portion 73 projecting upward from an upper surface 71a of the terminal holding portion 71.
- the terminal holding portion 71 is placed on an upper surface of a lower cover portion 72, and the fixed contact points 7a insert-molded in the terminal holding portion 71 are connected to an unillustrated print board placed on the upper surface of the lower cover portion 72 as similar to other wiring members provided in the terminal holding portion 71.
- the projecting portion 73 in which the fixed contact points 7a are provided has a rectangular shape in a plan view, and extends linearly in the same direction (right direction in the figure) as the fixed contact points 7a.
- a holding portion 77 holding the other end of the above spring Sp3 is provided to project in the same direction as the projecting portion 73 on an extension line from the backward side (right side in Fig. 4C ) of the projecting portion 73.
- a step portion 74 projecting closer to the upward side to the knob 8 than the projecting portion 73 is provided in the holding portion 77 side in the projecting portion 73.
- the step portion 74 extends in the same direction as the fixed contact points 7a between the fixed contact points 7a, 7a and is formed in a rectangular shape in a plan view.
- An inclined surface 74a is provided in the end portion of the step 74 at the forward side (left side in the figure), having a height from the projecting portion 73 that is lower toward the forward side of the step portion 74.
- the movable board 9 movable contact point 9a
- the movable contact point 9a moves to the side of the holding portion 77 (right side in the figure) by an operation of the knob 8
- the movable contact point 9a gets through the inclined surface 74a on the step portion 74
- the movable contact point 9a is arranged in a position away by a predetermined height ha upward from the fixed contact point 7a (refer to Fig. 4D ).
- a pair of guide plates 75 for guiding the movement of the movable board 9 in the axis line Y direction is provided at both sides of the fixed contact point 7a in the width direction of the switch device 1.
- the guide plates 75 are provided in parallel to each other along the movement direction (axis line Y direction) of the movable board 9, and are provided linearly in a range from the end portion 71b of the terminal holding portion 71 in the forward side (left side in the figure) to the vicinity of the holding portion 77.
- the guide plates 75 are provided to project upward from the terminal holding portion 71 of the pole board 7, and stoppers 76 are provided on the upper end portions of the guide plates 75 for preventing the movable board 9 arranged between the guide plates 75, 75 from falling down to the upward side in the figure.
- the stoppers 76 in the guide plates 75 are provided at the backward side thereof in the side of the holding portion 77, and engagement grooves 75a engaging to engagement portions 93a provided in the arm portions 93 of the movable board 9 as described above are provided in the forward side of the guide plates 75 adjacent to the stoppers 76.
- FIGs 5A to 5D are diagrams for explaining the operation of the push switch 2.
- the inclined surface 831a provided in the leg portion 83 of the knob 8 makes contact with the contact portion 92 of the movable board 9 in a position that is the farthest from the holding portion 77 in the axis line Y direction.
- the movable board 9 is pushed by the leg portion 83 (inclined surface 831a) to move to the side of the holding portion 77 (an arrow A3 direction in the figure), and therefore, the movable contact point 9a provided in the movable board 9 moves in the right direction in the figure (an arrow A4 direction in the figure) while sliding on the upper surface of the fixed contact point 7a.
- the step portion 74 is provided in the pole board 7 (terminal holding portion 71) to project closer to the upward side in the side of the knob 8 than the fixed contact point 7a, and this step portion 74 is provided in a position closer to the holding portion 77 between the fixed contact points 7a , 7a. Therefore, the movable contact point 9a that has moved to the right side in the figure by a push operation of the knob 8 finally climbs the inclined surface 74a provided in the step portion 74 to get on the step portion 74. When the movable contact point 9a gets on the step portion 74, the movable contact point 9a is arranged in a position away from the fixed contact point 7a (refer to Fig. 4D and Fig. 5D ).
- the heart cam 25 is provided in a substantially central part of the leg portion 83 in the longitudinal direction.
- the heart cam 25 has a cam groove 28 provided in the leg portion 83 and the lock pin 27 that is engaged to the cam groove 28.
- the lock pin 27 is provided to penetrate through the mounting wall 616 (refer to Figs. 3A and 3B ), and is provided such that one end thereof is caused to make push-contact with the cam groove 28 by an urging force acting from the plate spring 26 provided in the mounting wall 616.
- the leg portion 83 of the knob 8 is provided with two guide mechanisms (refer to Fig. 3A ) configured by guide projections (83a, 614a) and guide grooves (612a, 83b). Since the movement of the knob 8 in the axis line X1 direction is guided by the guide mechanisms, at the push operation time of the knob 8, the leg portion 83 does not move downward in the side of the pole board 7 in a state where the leg portion 83 is inclined to the axis line X1.
- the knob 8 moves in a direction (upper direction in the figure) of falling down from the support wall portion 61 to be back to the reference position shown in Fig. 5A .
- the movable contact point 9a provided in the movable board 9 moves to the left side in the figure while sliding on the upper surface of the step portion 74 (refer to an arrow B2 in the figure).
- the movable contact point 9a slides on the upper surface of the fixed contact point 7a in a state of making push-contact with the fixed contact point 7a by the urging force of the spring Sp3.
- the fixed contact points 7a are communicated through the movable contact point 9a in a point when the movable contact point 9a makes contact with the fixed contact points 7a, thus creating a state where the push switch 2 switches off.
- an urging force from the spring Sp1 interposed between the spring support portion 64 formed to be integral with the cover 6 and the spring support portion 24 in the side of the cover 6 acts on the backward side of the knob 8 in the front-back direction of the switch device 1, and an urging force from the spring Sp2 acting on the movable board 9 with which the leg portion 83 has made contact acts on the forward side of the knob 8.
- the urging force of the spring Sp1 acting on the backward side of the knob 8 is set to be substantially the same as the urging force of the spring Sp2 acting on the forward side thereof. Therefore, the knob 8 can move upward in the figure without being inclined to the axis line X1.
- the sliding direction of the movable contact point 9a is set to the radial direction (axis line Y direction) of the push direction (axis line X, X1 direction) of the knob 8.
- the sliding direction of the movable contact point 9a making contact with fixed contact point 7a is the radial direction (axis line Y direction) of the push direction (axis line X, X1 direction) of the knob 8, it is not necessary to ensure the space for the movable contact point 9a to slide in the push direction (axis line X, X1 direction) of the knob 8.
- the thickness of the push switch 2 in the push direction (axis line X, X1 direction) of the knob 8 can be made thinner than that of the conventional push switch in which the movable contact point slides in the push direction of the knob.
- the movable contact point 9a is provided in the movable board 9 that is movable in the radial direction (axis Y direction) of the push direction (axis line X, X1 direction) of the knob 8, and the knob 8 has the leg portion 83 extending in the push direction (axis line X, X1 direction), and the inclined surface 831a (inclined portion) having a width W in the axis line Y direction that is narrower toward the tip end is provided in one side of the tip end portion 831 of the leg portion 83 in the movement direction (axis line Y direction) of the movable board 9.
- the knob 8 is provided such that the inclined surface 831a makes contact with the movable board 9.
- the contact point P between the inclined surface 831a provided in the leg portion 83 and the movable board 9 displaces in one side in the movement direction (axis line Y direction) of the movable board 9 to move the movable board 9 to the one side.
- the movable board 9 has the contact portion 92 with the outer periphery of which the inclined surface 831a makes contact, and the outer peripheral surface (contact surface 92a) of the contact portion 92 is formed in an arc shape in a cross sectional view in the axis line Y direction, and the inclined surface 831a makes point-contact with the outer peripheral surface of the contact portion 92.
- the spring Sp1 (first urging unit) urging the knob 8 in the opposite side to the push direction, and the spring Sp2 (second urging unit) urging the movable board 9 in the other side in the radial direction (axis line Y direction) of the push direction are provided, wherein the spring Sp1 is provided in one side of the knob 8 in the radial direction for the urging force from the spring Sp1 to act on the one side of the knob 8, and the leg portion 83 is provided on the other side of the knob 8 for the urging force from the spring Sp2 to act on the other side of the knob 8.
- the urging force acting on the one side of the knob 8 in the radial direction is made to be the same as the urging force acting on the other side by adjusting the urging force of the spring Sp1 and that of the spring Sp2, and thereby, it is possible to prevent the knob 8 from moving in a state of being inclined to the push direction at the time the knob 8 moves in the push direction.
- the knob 8 can be returned back to the reference position while holding the knob 8 in a horizontal state.
- the leg portions 108A and 108B are respectively provided on one side and the other side of the knob 107 in the longitudinal direction for pushing and moving the movable board 104 equally.
- a size of the movable board 104 becomes inevitably large for ensuring strength of the movable board 104 to the push forces acting from the leg portions 108A and 108B.
- a size of the movable board 9 can be made smaller as compared to a case of the conventional push switch.
- the push switch 2 can be downsized as compared to the conventional push switch.
- a freedom degree of the layout in the case 5 is improved corresponding to the downsizing of the movable board 9, and also since materials necessary for producing the push switch 2 can be reduced by the downsizing of the case 5 following the downsizing of the movable board 9, it is possible to reduce manufacturing costs.
- each member is not limited to those illustrated, but may be arbitrarily set within a range where the operational effect of the present invention can be achieved, corresponding to the installation place, the use aspect or the like.
Landscapes
- Push-Button Switches (AREA)
- Switches With Compound Operations (AREA)
Abstract
Description
- The present invention relates to a push switch.
- There is known a push switch in which a movable board is moved in an operating direction of a knob by a push operation of the knob to cause a movable contact point provided on the movable board to slide on a fixed contact point (for example, Japanese Patent Laid-Open Publication No.
2001-243850 -
Fig. 6A and Fig. 6B are diagrams for explaining the configuration of a push switch according to a conventional example represented by Japanese Patent Laid-Open Publication No.2001-243850 - In a
push switch 100 according to the conventional example, amovable board 104 having amovable contact point 104a is provided in acase 101 configured by assembling acover 102 and apole board 103 to be movable forward/backward in an operating direction of a knob 107 (upper-lower direction inFigs. 6A and 6B ). - The
movable board 104 is positioned right under theknob 107 in thecase 101, and an upper portion thereof is engaged toleg portions knob 107 by an urging force acting on themovable board 104 from a spring Sp. - In the
push switch 100, when theknob 107 moves downward in the side of thepole board 103 by the push operation of theknob 107, themovable board 104 is also pushed by theleg portions knob 107 to move downward in the side of thepole board 103. - The
movable contact point 104a is provided to project from a side face of themovable board 104, and makes push-contact with afixed contact point 103a by an urging force of an unillustrated spring in a direction vertical to an operating direction of theknob 107, wherein thefixed contact point 103a is arranged to be lateral to themovable board 104. - The
fixed contact point 103a is provided on asupport wall 109 extending upward from thepole board 103, and is provided along a longitudinal direction (upper-lower direction in the figure) of thesupport wall 109 over a predetermined length. - Therefore, when the
movable board 104 moves downward in the side of thepole board 103 by the push operation of theknob 107, themovable contact point 104a moves downward while sliding on a surface of thefixed contact point 103a. - Here, the
support wall 109 is provided with astep portion 109a projecting closer to themovable board 104 than thefixed contact point 103a at a lower portion of thepole board 103 in the side of abottom wall portion 103c. Therefore, when theknob 107 is pushed down from a reference position showed inFig. 6A to move to an operation position shown inFig. 6B , themovable contact point 104a gets on thestep portion 109a, so that a contact state of themovable contact point 104a with thefixed contact point 103a is eliminated. - In addition, in the
push switch 100, the operation of theknob 107 is detected when themovable contact point 104a gets on thestep portion 109a to bring in a non-contact state between themovable contact point 104a and thefixed contact point 103a. - In the
push switch 100 according to this conventional example, the movable board 104 (movable contact point 104a) positioned right under theknob 107 is moved forward/backward in the same direction as the operating direction of theknob 107 to connect or disconnect themovable contact point 104a and thefixed contact point 103a. - Therefore, since it is necessary to ensure a space for moving the
knob 107 and themovable board 104 within thecase 101, a thickness of thepush switch 100 results in becoming increased in the operating direction of theknob 107. - Therefore, in the push switch in which the movable contact point making contact with the fixed contact point is caused to slide to connect or disconnect the movable contact point and the fixed contact point, it is required to thin the thickness of the push switch in the operating direction of the knob.
- Accordingly, the present invention is made in view of the above-described problems in the conventional push switch, and an object of the present invention is to provide a push switch that can thin a thickness of the push switch in an operating direction of a knob.
- According to an aspect of the present invention, a push switch comprises a fixed contact point, a movable contact point that movably makes contact with the fixed contact point, and a knob that causes the movable contact point in contact with the fixed contact point to slide thereon by a push operation of the knob, thereby connecting/disconnecting the movable contact point and the fixed contact point, wherein a sliding direction of the movable contact point is set to a radial direction to the push direction of the knob.
- According to the aspect of the present invention, since the sliding direction of the movable contact point in contact with the fixed contact point is set to the radial direction of the push direction of the knob, it is not necessary to ensure a space for the movable contact point to slide, in the push direction of the knob. Accordingly, it is possible to thin the thickness of the push switch in the operating direction of the knob as compared to the conventional push switch in which the movable contact point slide in the push direction of the knob.
- Other objects, features, and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings, in which like parts are designated by like reference numbers and in which:
-
Fig. 1A and Fig.1B are diagrams for explaining the configuration of a switch device according to an embodiment in the present invention, whereinFig. 1A is a perspective view showing the switch device andFig. 1B is an exploded perspective view showing a push switch in the switch device; -
Fig. 2 is a cross section showing the push switch taken along a plane A inFig. 1A according to the embodiment; -
Fig. 3A is a cross section showing the push switch taken in the direction of lines A-A inFig. 2 according to the embodiment; -
Fig. 3B is a cross section showing the push switch taken in the direction of lines B-B inFig. 2 according to the embodiment; -
Fig. 3C is a cross section showing the push switch taken in the direction of lines A-A inFig. 3A according to the embodiment; -
Fig. 4A is a cross section showing the push switch taken in the direction of lines C-C inFig. 2 according to the embodiment; -
Fig. 4B is a cross section showing the push switch taken in the direction of lines A-A inFig. 4A according to the embodiment; -
Fig. 4C is a cross section showing the push switch and explainingfixed contact points 7a exposed on an upper surface of a pole board according to the embodiment; It is noted thatFig.4C corresponds to a figure which omitted themovable board 9 and a spring sp2, and the hatching is attached onfixed contact points 7a which expose on the upper surface of thepole board 7.Fig. 4D is a cross section showing the push switch taken in the direction of lines B-B inFig. 4C according to the embodiment; -
Fig. 5A, Fig. 5B, Fig. 5C and Fig. 5D are diagrams for explaining an operation of the push switch according to the embodiment, whereinFig. 5A is a cross section showing a state where a knob is arranged in a reference position,Fig. 5B is a cross section showing a state where the knob is pushed downward in the side of a pole board to be arranged in an operation position,Fig. 5C is a cross section taken along lines A-A inFig. 5A, and Fig. 5D is a cross section taken along lines B-B inFig. 5B ; and -
Fig. 6A and Fig. 6B are diagrams for explaining a push switch according to the conventional example. - Hereinafter, an embodiment in the present invention will be explained with reference to the accompanying drawings by taking a push switch provided in a switch device as an example.
- Here, in the following explanation, for descriptive purposes, a cover 6-side is described as "upward", a pole board 7-side is described as "downward", a push switch 2-side is described as "forward", and a swinging switch 4-side is described as "backward" in
Fig. 1A as needed. - As shown in
Fig. 1 , aswitch device 1 is configured such thatplural switches case 5 formed by assembling thecover 6 and thepole board 7. - The
switch 2 is a push switch (hereinafter, referred to as "push switch 2") that switches on/off by a push operation of aknob 8, and thepush switch 2 is provided with theknob 8, amovable board 9 that is operated by theknob 8, amovable contact point 9a that is provided in themovable board 9, and fixedcontact points 7a that are provided in thepole board 7. - The
knob 8 is supported by a cylindricalsupport wall portion 61 projecting upward from an upper surface of thecover 6 to be movable in the upper-lower direction. - In the
push switch 2, when theknob 8 is operated to be pushed, themovable board 9 moves in a direction (axis line Y direction) vertical to the operating direction (axis line X direction) of theknob 8 by aleg portion 83 extending from theknob 8, and at this time, when themovable contact point 9a provided on themovable board 9 slides on the upper surface of the fixedcontact point 7a, thepush switch 2 switches on/off. - As shown in
Fig. 2 , theknob 8 has apush portion 81 that is pushed at the time of switching on/off thepush switch 2, and thepush portion 81 includes anupper wall portion 810 formed in a substantially rectangular shape in a plan view and aperipheral wall portion 811 surrounding a peripheral edge of theperipheral wall portion 810 over an entire periphery thereof. - A
guide wall 82 guiding the movement of theknob 8 in the upper-lower direction and theleg portion 83 transmitting the operation of theknob 8 to themovable board 9 are provided inside theperipheral wall portion 811, and theknob 8 is supported by thesupport wall portion 61 in a state of inserting thesupport wall portion 61 in the side of thecover 6 between theguide wall 82 and theperipheral wall portion 811. - As shown in
Fig. 2 andFigs. 3A, 3B and 3C , thesupport wall portion 61 is provided to project upward from thecover 6 to surround anopening 62 formed in thecover 6, and includesside wall portions switch device 1 along a side edge of theopening 62, andside wall portions switch device 1 along a side edge of theopening 62. - The
side wall portions side wall portions side wall portion 615. A mountingwall 616 on which aplate spring 26 of aheart cam 25 which will be described later is mounted is provided in a front end of theside wall portion 613 to be in a position offset closer to the inside than theside wall portion 613, and theside wall portion 613 and theside wall portion 614 are connected through the mountingwall 616. - The mounting
wall 616 is provided in parallel to theside wall portions side wall portion 612 and the mountingwall 616 to be able to insert theleg portion 83 into, which will be described later and forms a space S2 between theperipheral wall portion 811 of theknob 8 and the mountingwall 616 to be able to accommodate alock pin 27 of theheart cam 25 and theplate spring 26. - As shown in
Fig. 3A , theguide wall 82 with which theknob 8 is provided includes awall portion 821 arranged along theside wall portion 615 in the backside of thesupport wall portion 61, andwall portions wall portion 821 from both ends of thewall portion 821. Theguide wall 82 is formed in a reverse C-letter shape in a cross sectional view. - A
projection 821a is provided in the halfway of thewall portion 821 in the longitudinal direction to project backward in the side of theside wall portion 615. Theprojection 821a is engaged to aguide groove 615a formed on an inner side surface of theside wall portion 615 in a state where theknob 8 is assembled in thecover 6. - The
projection 821a in the side of theknob 8 and theguide groove 615a in the side of theside wall portion 615 are respectively provided along the upper-lower direction. Therefore, when theknob 8 is pushed to move downward in the side of thepole board 7, theprojection 821a moves along theguide groove 615a, and thereby the movement in the backside of theknob 8 in the upper-lower direction is guided. -
Wall portions side wall portions side wall portions support wall portion 61, and are provided with openingportions wall portions - The opening
portions Fig. 3C ) along theside wall portions engagement portions side wall portions support wall portion 61 are positioned to the openingportions knob 8 is assembled in thecover 6. - As shown in
Fig. 2 , in the present embodiment, urging forces of springs Sp1 and sp2 act on theknob 8, and theknob 8 is regularly urged in a direction (upper direction in the figure) of falling down from thesupport wall portion 61. - Therefore, when the force of pushing the
knob 8 downward in the side of thepole board 7 does not act on theknob 8, the falling-down of theknob 8 from thesupport wall portion 61 is prevented by engagement of theengagement portions support wall portion 61 to lower edges of the openingportions Fig. 2 , lower edge 822a1 of theopening portion 822a). - It should be noted that since the opening
portions Fig. 3C ) in the upper-lower direction in theside wall portions knob 8 is operated to move downward in the side of thepole board 7, theengagement portions opening portion 822a. Therefore, at the time theknob 8 moves downward in the side of thepole board 7, the movement of theknob 8 is not interrupted by theengagement portions - As shown in
Fig. 3A , theleg portion 83 in a substantially rectangular shape in a cross sectional view is formed to be integral with a front end of thewall portion 822. - As shown in
Fig. 2 , theleg portion 83 extends linearly toward the downward side in the side of thepole board 7, and atip end portion 831 thereof makes contact with themovable board 9 in thecase 5 in a state where theknob 8 is supported by thesupport wall portion 61. - As shown in
Fig. 3A , aguide projection 83a engaging to aguide groove 612a of theside wall portion 612 is provided on an opposing surface of theleg portion 83 to theside wall portion 612, and aguide groove 83b engaging to aguide projection 614a of theside wall portion 614 is provided on an opposing surface of theleg portion 83 to theside wall portion 614. - The
guide projection 83a and theguide groove 83b in the side of theleg portion 83, and theguide groove 612a and theguide projection 614a in the side of thesupport wall portion 61 are respectively provided in the upper-lower direction. When theknob 8 is pushed to move downward in the side of thepole board 7, theguide projection 83a in the side of theleg portion 83 and theguide projection 614a in the side of thesupport wall portion 61 respectively move along theguide grooves - Here, in the
switch device 1, theleg portion 83 extending downward in the side of thepole board 7 from theknob 8 moves forward/backward in an axial direction of an axis line X1 (refer toFig.2 ) in association with an operation of theknob 8. When theknob 8 is pushed downward in the side of thepole board 7, theleg portion 83 moves in the same direction (downward in the side of the pole board 7) as that of theknob 8, and thetip end portion 831 in contact with themovable board 9 moves themovable board 9 in a direction vertical to the axis line X1 (axis line Y direction). - Therefore, when the
leg portion 83 moves in a state of being inclined to the axis line X1 at this time, thetip end portion 831 and a contact point P between thetip end portion 831 and themovable board 9 which will be described later are shifted in a radial direction (axis line Y direction) of the axis line X1. Therefore, a position of themovable board 9 in the axis line Y direction is shifted out of a position in which themovable board 9 should be basically. - In the present embodiment, two guide mechanisms configured by the guide projections (83a and 614a) and the guide grooves (612a and 83b) are provided, which prevents the
leg portion 83 from moving downward in the side of thepole board 7 in a state of being inclined to the axis line X1 at a push operation of theknob 8. - As shown in
Fig. 2 , at the backward side of theknob 8 in the front-back direction of theswitch device 1, aspring support portion 24 that projects downward in the side of thepole board 7 is provided inside theguide wall 82. - One end of the spring Sp1 is mounted on the
spring support portion 24 to be inserted around it, and the other end of the spring Sp1 is mounted to be inserted around aspring supporting portion 64 formed integrally with thecover 6. - The spring Sp1 is provided along the push direction (axis line X direction) of the
knob 8 to exert an urging force in a direction (upper direction in the figure) of causing theknob 8 to fall down from thesupport wall portion 61 on theknob 8. - The
leg portion 83 extending downward in the side of thepole board 7 from theknob 8 is positioned in the forward side of theknob 8 in the front-back direction of theswitch device 1. - The
leg portion 83 is provided along the push direction (axis line X1 direction) of theknob 8, and is provided in parallel to the spring Sp1 provided along the axis line X. - The
leg portion 83 projects closer to the downward side in the side of thepole board 7 than theperipheral wall portion 811, and thetip end portion 831 thereof through which theopening 62 of thecover 6 penetrates is provided with aninclined surface 831a that makes contact with thecontact portion 92 of themovable board 9. - The
inclined surface 831a is provided at the backside of theleg portion 83 in the front-back direction of theswitch device 1, and theinclined surface 831a is inclined by a predetermined angle θ to the operating direction (axis line X1) of theknob 8. - Therefore, the tip end portion 831-side of the
leg portion 83 has a width W in the front-back direction of theswitch device 1 that is narrower toward the downward side in the side of thepole board 7, and theleg portion 83 causes theinclined surface 831a provided in thetip end portion 831 to make contact with thecontact portion 92 of themovable board 9 from the upper side in the upper-lower direction of theswitch device 1. - The
movable board 9 is provided to be movable forward/backward in a direction (axis line Y direction) vertical to the operating direction (axis line X/X1 direction) of theknob 8 by aterminal holding portion 71. When theleg portion 83 moves in the operating direction (axis line X/X1 direction) of theknob 8, a position of the contact point P between theinclined surface 831a of theleg portion 83 and thecontact portion 92 of themovable board 9 changes in the axis line Y direction, and thereby, a position of themovable board 9 in the axis line Y direction changes in association with the operation of theknob 8. - As shown in
Fig. 1 , themovable board 9 is provided with a rectangularmain body portion 91 in a plan view, and thecontact portion 92 that makes contact with theleg portion 83 as described above is provided in oneend 91a of themain body portion 91 at the forward side in the longitudinal direction. - The
contact portion 92 is formed to project forward from the oneend 91a of themain body portion 91, and has a width W2 narrower than a width W1 of themain body portion 91. - As shown in
Fig. 2 , an upper surface of thecontact portion 92 at the tip end side is formed as acontact surface 92a having an arc-shaped outer periphery in a cross sectional view, and theinclined surface 831a of theleg portion 83 makes contact with thecontact surface 92a from the upper side. - As shown in
Fig. 1B andFig. 4A ,arm portions 93 extending in the same direction as that of thecontact portion 92 from the oneend 91a of themain body portion 91 are provided in both sides of thecontact portion 92. - The
arm portions 93 are columnar members extending linearly in the longitudinal direction of themain body portion 91, andengagement portions 93a are provided in the tip end portions of thearm portions 93 to project outward from themain body portion 91 in the width direction. - A
columnar projection 94 is provided in theother end 91b of themain body portion 91 at the opposite side to thecontact portion 92. Theprojection 94 projects backward of theswitch device 1 from the central part of themain body portion 91 in the width direction, and one end of the spring Sp2 is mounted on the outer periphery to be fitted around it. - The other end of the spring Sp2 is mounted to be fitted around a
projection 78 provided in a holdingportion 77 in the side of thepole board 7, and the spring Sp2 is, when themovable board 9 is assembled in thepole board 7, provided at a compression state between themain body portion 91 and the holdingportion 77. - At this time, the
movable board 9 is pushed to the forward side of theswitch device 1 by the urging force acting from the spring Sp2 to engage theengagement portions 93a of theaforementioned arm portions 93 toengagement grooves 75a ofguide plates 75, thus preventing themovable board 9 from falling down from theguide plates 75. - Here, the
contact portion 92 of themovable board 9 makes contact with theinclined surface 831a of theleg portion 83 from the axis line Y direction by the urging force acting from the spring Sp2, and the spring Sp2 moves theknob 8 upward in the figure, and at the same time, exerts the urging force in the direction of moving the position of the contact point P between theinclined surface 831a and thecontact portion 92 to the forward side (left side in the figure) of theswitch device 1. - Therefore, the urging force of the spring Sp2 acts on the forward side of the
knob 8, in which theleg portion 83 is provided, in the direction of moving theknob 8 in the upper direction in the figure (direction of causing theknob 8 to fall down from the support wall portion 61). - In the present embodiment, a
support wall portion 614b is provided forward of thetip end portion 831 of theleg portion 83 along thetip end portion 831. Thesupport wall portion 614b extends on an extension line of theside wall portion 614 of thesupport wall portion 61 in thecase 5, which prevents the side of thetip end portion 831 of theleg portion 83 from being inclined to the axis line X1 by the urging force of the spring Sp2 causing thecontact portion 92 of themovable board 9 to make push-contact with theinclined surface 831a. Further, thesupport wall portion 614b also acts as a guide at the time theleg portion 83 moves forward/backward in the axis line X1 direction. - As shown in
Fig. 2 , a lower part of themain body portion 91 in the side of thepole board 7 is formed in a hollow shape, and aspring holding portion 95 is provided in the central part of themain body portion 91 in the longitudinal direction. Anaccommodation groove 95a is formed in the central part of thespring holding portion 95 along the width direction of themain body portion 91, and themovable contact point 9a is accommodated in theaccommodation groove 95a. - The
movable contact point 9a is formed by bending one sheet of metallic plate, and has a substantial U-letter shape in a cross sectional view. As shown inFig. 4B , a concave portion 9a1 that is engaged to the spring Sp3 is formed in the central part of themovable contact point 9a in the width direction. - One end of a spring Sp3 projecting downward from the
spring holding portion 95 makes contact with the central part of the concave portion 9a1 in the width direction, and the other end of the spring Sp3 is inserted in a cylindricalspring holding hole 95b provided in thespring holding portion 95. - The
movable contact point 9a is movable in the upper-lower direction by the spring Sp3 accommodated in thespring holding hole 95b, and a lower surface of themovable contact point 9a is caused to make push-contact with the fixedcontact points 7a provided in the side of thepole board 7 by an urging force acting from the spring Sp3. - As shown in
Fig. 4C , the fixedcontact points 7a in thepole board 7 are provided in parallel to each other to be spaced in the width direction of theswitch device 1, and extend linearly in the movement direction (axis line Y direction) of themovable board 9. - The fixed
contact points 7a are formed to be integral with theterminal holding portion 71 of thepole board 7 by insert molding, and in theterminal holding portion 71, the fixedcontact points 7a are exposed on an upper surface of a projectingportion 73 projecting upward from anupper surface 71a of theterminal holding portion 71. - The
terminal holding portion 71 is placed on an upper surface of alower cover portion 72, and the fixedcontact points 7a insert-molded in theterminal holding portion 71 are connected to an unillustrated print board placed on the upper surface of thelower cover portion 72 as similar to other wiring members provided in theterminal holding portion 71. - As shown in
Fig. 4C , the projectingportion 73 in which the fixedcontact points 7a are provided has a rectangular shape in a plan view, and extends linearly in the same direction (right direction in the figure) as the fixedcontact points 7a. - A holding
portion 77 holding the other end of the above spring Sp3 is provided to project in the same direction as the projectingportion 73 on an extension line from the backward side (right side inFig. 4C ) of the projectingportion 73. - A
step portion 74 projecting closer to the upward side to theknob 8 than the projectingportion 73 is provided in the holdingportion 77 side in the projectingportion 73. Thestep portion 74 extends in the same direction as the fixedcontact points 7a between thefixed contact points - An
inclined surface 74a is provided in the end portion of thestep 74 at the forward side (left side in the figure), having a height from the projectingportion 73 that is lower toward the forward side of thestep portion 74. In a case where the movable board 9 (movable contact point 9a) moves to the side of the holding portion 77 (right side in the figure) by an operation of theknob 8, when themovable contact point 9a gets through theinclined surface 74a on thestep portion 74, themovable contact point 9a is arranged in a position away by a predetermined height ha upward from the fixedcontact point 7a (refer toFig. 4D ). - As shown in
Fig. 4C , a pair ofguide plates 75 for guiding the movement of themovable board 9 in the axis line Y direction is provided at both sides of the fixedcontact point 7a in the width direction of theswitch device 1. - The
guide plates 75 are provided in parallel to each other along the movement direction (axis line Y direction) of themovable board 9, and are provided linearly in a range from theend portion 71b of theterminal holding portion 71 in the forward side (left side in the figure) to the vicinity of the holdingportion 77. - The
guide plates 75 are provided to project upward from theterminal holding portion 71 of thepole board 7, andstoppers 76 are provided on the upper end portions of theguide plates 75 for preventing themovable board 9 arranged between theguide plates - The
stoppers 76 in theguide plates 75 are provided at the backward side thereof in the side of the holdingportion 77, andengagement grooves 75a engaging toengagement portions 93a provided in thearm portions 93 of themovable board 9 as described above are provided in the forward side of theguide plates 75 adjacent to thestoppers 76. - Hereinafter, an operation of the
push switch 2 will be explained.Figs 5A to 5D are diagrams for explaining the operation of thepush switch 2. - As shown in
Fig. 5A and Fig. 5C , in a state where theknob 8 is arranged in a reference position, theinclined surface 831a provided in theleg portion 83 of theknob 8 makes contact with thecontact portion 92 of themovable board 9 in a position that is the farthest from the holdingportion 77 in the axis line Y direction. - When the
knob 8 moves downward in the side of thepole board 7 from this state by a push operation of the knob 8 (refer to an arrow A1 in the figure), theleg portion 83 of theknob 8 also moves downward in the side of the pole board 7 (refer to an arrow A2 in the figure). - Then, since a width W of the
tip end portion 831 of theleg portion 83 is wider toward the upper side in the figure, as theleg portion 83 moves downward in the side of thepole board 7, the contact point P between theinclined surface 831a and thecontact portion 92 of themovable board 9 in the movement direction (axis line Y direction) of themovable board 9 moves in the right direction in the figure. - As a result, the
movable board 9 is pushed by the leg portion 83 (inclinedsurface 831a) to move to the side of the holding portion 77 (an arrow A3 direction in the figure), and therefore, themovable contact point 9a provided in themovable board 9 moves in the right direction in the figure (an arrow A4 direction in the figure) while sliding on the upper surface of the fixedcontact point 7a. - The
step portion 74 is provided in the pole board 7 (terminal holding portion 71) to project closer to the upward side in the side of theknob 8 than the fixedcontact point 7a, and thisstep portion 74 is provided in a position closer to the holdingportion 77 between thefixed contact points movable contact point 9a that has moved to the right side in the figure by a push operation of theknob 8 finally climbs theinclined surface 74a provided in thestep portion 74 to get on thestep portion 74. When themovable contact point 9a gets on thestep portion 74, themovable contact point 9a is arranged in a position away from the fixedcontact point 7a (refer toFig. 4D andFig. 5D ). - Here, in the
push switch 2 in the present embodiment, theheart cam 25 is provided in a substantially central part of theleg portion 83 in the longitudinal direction. Theheart cam 25 has acam groove 28 provided in theleg portion 83 and thelock pin 27 that is engaged to thecam groove 28. Thelock pin 27 is provided to penetrate through the mounting wall 616 (refer toFigs. 3A and 3B ), and is provided such that one end thereof is caused to make push-contact with thecam groove 28 by an urging force acting from theplate spring 26 provided in the mountingwall 616. - In the present embodiment, when the
knob 8 is operated to be pushed downward in the side of thepole board 7, thelock pin 27 provided in the mountingwall 616 and thecam groove 28 move relatively in the upper-lower direction (axis line X1 direction), and a contact position of thelock pin 27 with thecam groove 28 changes along a trace shown in an arrow a inFig. 5A . - When the push operation of the
knob 8 is eliminated after moving theknob 8 downward in the figure, since theknob 8 is urged upward in the figure by urging forces acting from the springs Sp1 and Sp2, theengagement portion 29 of theheart cam 25 is engaged to thelock pin 27 from the lower direction in the figure to restrict the movement of the upper side of the knob 8 (refer toFig. 5B ). - Therefore, when the
knob 8 of thepush switch 2 that is in a reference position (refer toFig. 5A ) is pushed down by one time, thelock pin 27 is engaged to theengagement portion 29 to hold theknob 8 to an operation position (refer toFig. 5B ) arranged closer to the downward side in the side of thepole board 7 than the reference position. - Here, the
leg portion 83 of theknob 8 is provided with two guide mechanisms (refer toFig. 3A ) configured by guide projections (83a, 614a) and guide grooves (612a, 83b). Since the movement of theknob 8 in the axis line X1 direction is guided by the guide mechanisms, at the push operation time of theknob 8, theleg portion 83 does not move downward in the side of thepole board 7 in a state where theleg portion 83 is inclined to the axis line X1. - When the
knob 8 in the operation position shown inFig. 5B is pushed downward of the pole board 7 (refer toFig. 5B and an arrow B1 in the figure), thelock pin 27 and thecam groove 28 move relatively in the upper-lower direction (axis line X1 direction) to release the engagement between thelock pin 27 and theengagement portion 29. - At this time, the position of the
lock pin 27 and theengagement portion 29 is shifted in an axial direction of the axis line Y by the inclination of thecam groove 28. Therefore, when the push operation of theknob 8 is released after pushing down theknob 8, the contact position between thelock pin 27 and thecam groove 28 changes along the trace shown in an arrow b inFig. 5B . - Thereby, the
knob 8 moves in a direction (upper direction in the figure) of falling down from thesupport wall portion 61 to be back to the reference position shown inFig. 5A . - At this time, since the
leg portion 83 of theknob 8 moves upward in the figure, the contact point P between themovable board 9 urged by the spring Sp2 and theleg portion 83 moves to the left side in the movement direction (axis line Y direction) of themovable board 9 following the movement of theleg portion 83. - Then, the
movable contact point 9a provided in themovable board 9 moves to the left side in the figure while sliding on the upper surface of the step portion 74 (refer to an arrow B2 in the figure). In addition, when themovable contact point 9a reaches a position where thestep portion 74 is not provided, themovable contact point 9a slides on the upper surface of the fixedcontact point 7a in a state of making push-contact with the fixedcontact point 7a by the urging force of the spring Sp3. - In addition, the fixed
contact points 7a are communicated through themovable contact point 9a in a point when themovable contact point 9a makes contact with the fixedcontact points 7a, thus creating a state where thepush switch 2 switches off. - It should be noted that at the time the
knob 8 moves from the operation position shown inFig. 5B to the reference position shown inFig. 5A , an urging force from the spring Sp1 interposed between thespring support portion 64 formed to be integral with thecover 6 and thespring support portion 24 in the side of thecover 6 acts on the backward side of theknob 8 in the front-back direction of theswitch device 1, and an urging force from the spring Sp2 acting on themovable board 9 with which theleg portion 83 has made contact acts on the forward side of theknob 8. - In the present embodiment, the urging force of the spring Sp1 acting on the backward side of the
knob 8 is set to be substantially the same as the urging force of the spring Sp2 acting on the forward side thereof. Therefore, theknob 8 can move upward in the figure without being inclined to the axis line X1. - As described above, according to the present embodiment, in the
push switch 2 in which the push operation of theknob 8 causes themovable contact point 9a making contact with the fixedcontact point 7a to slide thereon, thus connecting/disconnecting themovable contact point 9a and the fixedcontact point 7a, the sliding direction of themovable contact point 9a is set to the radial direction (axis line Y direction) of the push direction (axis line X, X1 direction) of theknob 8. - According to this configuration, since the sliding direction of the
movable contact point 9a making contact withfixed contact point 7a is the radial direction (axis line Y direction) of the push direction (axis line X, X1 direction) of theknob 8, it is not necessary to ensure the space for themovable contact point 9a to slide in the push direction (axis line X, X1 direction) of theknob 8. - Accordingly, the thickness of the
push switch 2 in the push direction (axis line X, X1 direction) of theknob 8 can be made thinner than that of the conventional push switch in which the movable contact point slides in the push direction of the knob. - The
movable contact point 9a is provided in themovable board 9 that is movable in the radial direction (axis Y direction) of the push direction (axis line X, X1 direction) of theknob 8, and theknob 8 has theleg portion 83 extending in the push direction (axis line X, X1 direction), and theinclined surface 831a (inclined portion) having a width W in the axis line Y direction that is narrower toward the tip end is provided in one side of thetip end portion 831 of theleg portion 83 in the movement direction (axis line Y direction) of themovable board 9. Theknob 8 is provided such that theinclined surface 831a makes contact with themovable board 9. - According to this configuration, when the
leg portion 83 of theknob 8 moves in the push direction (axis line X, X1 direction) of theknob 8 by the push operation of theknob 8, the contact point P between theinclined surface 831a provided in theleg portion 83 and themovable board 9 displaces in one side in the movement direction (axis line Y direction) of themovable board 9 to move themovable board 9 to the one side. - Accordingly, by a simple configuration that the
inclined surface 831a provided in theleg portion 83 is provided to make contact with themovable board 9, the movement of theknob 8 in the push direction (axis line X1 direction) is changed into the movement of themovable board 9 in the radial direction (axis line Y direction) to the push direction to enable themovable contact point 9a making contact with the fixedcontact point 7a to slide in the radial direction. - Here, the
movable board 9 has thecontact portion 92 with the outer periphery of which theinclined surface 831a makes contact, and the outer peripheral surface (contact surface 92a) of thecontact portion 92 is formed in an arc shape in a cross sectional view in the axis line Y direction, and theinclined surface 831a makes point-contact with the outer peripheral surface of thecontact portion 92. - Thereby, since it is possible to reduce a frictional resistance at the time of moving the
movable board 9 by the leg portion 83 (contact surface 831a) that has moved to the operation direction side of theknob 8 by the push operation of theknob 8, it is possible to smoothly perform the push operation of theknob 8 in thepush switch 2. - The spring Sp1 (first urging unit) urging the
knob 8 in the opposite side to the push direction, and the spring Sp2 (second urging unit) urging themovable board 9 in the other side in the radial direction (axis line Y direction) of the push direction are provided, wherein the spring Sp1 is provided in one side of theknob 8 in the radial direction for the urging force from the spring Sp1 to act on the one side of theknob 8, and theleg portion 83 is provided on the other side of theknob 8 for the urging force from the spring Sp2 to act on the other side of theknob 8. - According to this configuration, the urging force acting on the one side of the
knob 8 in the radial direction is made to be the same as the urging force acting on the other side by adjusting the urging force of the spring Sp1 and that of the spring Sp2, and thereby, it is possible to prevent theknob 8 from moving in a state of being inclined to the push direction at the time theknob 8 moves in the push direction. - Since it is possible to prevent the occurrence of an obstacle in the movement of the
knob 8 due to a state where theknob 8 is inclined to the push direction, it is possible to appropriately suppress occurrence of malfunction of the push switch due to occurrence of the obstacle in the movement of the knob. - Further, at the time the
knob 8 returns back to the reference position shown inFig. 5A from the operation position shown inFig. 5B by the urging forces of the spring Sp1 and the spring Sp2, the urging forces acting on the forward side and on the backward side of theknob 8 in the front-back direction of theswitch device 1 can be made to be the same. Therefore, theknob 8 can be returned back to the reference position while holding theknob 8 in a horizontal state. - Further, in a case of the conventional push switch in which the
movable board 104 having themovable contact point 104a is moved in the push direction of theknob 107 to cause themovable contact point 104a having made contact with the fixedcontact point 103a to slide (refer toFig. 6 ), theleg portions knob 107 in the longitudinal direction for pushing and moving themovable board 104 equally. - Therefore, a size of the
movable board 104 becomes inevitably large for ensuring strength of themovable board 104 to the push forces acting from theleg portions - According to the configuration as described above, since the section of the
movable board 9 that is pushed by theleg portion 83 is only one section of thecontact point 92, a size of themovable board 9 can be made smaller as compared to a case of the conventional push switch. Thereby, thepush switch 2 can be downsized as compared to the conventional push switch. - A freedom degree of the layout in the
case 5 is improved corresponding to the downsizing of themovable board 9, and also since materials necessary for producing thepush switch 2 can be reduced by the downsizing of thecase 5 following the downsizing of themovable board 9, it is possible to reduce manufacturing costs. - In addition, a shape, a size and the like of each member are not limited to those illustrated, but may be arbitrarily set within a range where the operational effect of the present invention can be achieved, corresponding to the installation place, the use aspect or the like.
- While only the selected embodiment has been chosen to illustrate the present invention, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made therein without departing from the scope of the invention as defined in the appended claims. Furthermore, the foregoing description of the embodiment according to the present invention is provided for illustration only, and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
-
- 1
- Switch device
- 2
- Push switch
- 4
- Swing switch
- 5
- Case
- 6
- Cover
- 7
- Pole board
- 7a
- Fixed contact point
- 8
- Knob
- 9
- Movable board
- 9a
- Movable contact point
- 61
- Support wall portion
- 62
- Opening
- 71
- Terminal holding portion
- 72
- Lower cover portion
- 73
- Projecting portion
- 74
- Step portion
- 74a
- Inclined surface
- 75
- Guide plate
- 75a
- Engagement groove
- 76
- Stopper
- 77
- Holding portion
- 78
- Projection
- 81
- Push portion
- 82
- Guide wall
- 83
- Leg portion
- 83a
- Guide projection
- 83b
- Guide groove
- 91
- Main body portion
- 92
- Contact portion
- 93
- Arm portion
- 93a
- Engagement portion
- 94
- Projection
- 95
- Spring holding portion
- 95a
- Accommodation groove
- 95b
- Spring holding hole
- 612 to 615
- Side wall portion
- 612a, 615a
- Guide groove
- 612b, 613b
- Engagement portion
- 614a
- Guide projection
- 616
- Mounting wall
- 810
- Upper wall portion
- 811
- Peripheral wall portion
- 821, 822
- Wall portion
- 822a
- Opening portion
- 831
- Tip end portion
- 831a
- Inclined surface
- P
- Contact point
- Sp, Sp1, Sp2, Sp3
- Spring
- X
- Axis line
- X1
- Axis line
- Y
- Axis line
Claims (3)
- A push switch comprising:a fixed contact point (7a);a movable contact point (9a) that movably makes contact with the fixed contact point (7a); anda knob (8) that causes the movable contact point (9a) in contact with the fixed contact point (7a) to slide thereon by a push operation of the knob (8), thereby connecting/disconnecting the movable contact point and the fixed contact point, characterized in thata sliding direction of the movable contact point (9a) is set to a radial direction to the push direction of the knob (8).
- A push switch according to claim 1, characterized in that the movable contact point (9a) is provided in a movable board (9) that is movable in the radial direction,
the knob (8) includes a leg portion (83) extending in the push direction and an inclined portion provided in one side of a tip end of the leg portion (83) in the radial direction, the inclined portion formed in such a direction that a width of the leg portion (83) in the radial direction is narrower toward the tip end, and
the knob (8) is provided such that the inclined portion makes contact with the movable board (9). - A push switch according to claim 2, characterized in that the push switch further comprises:a first urging unit (Sp1) configured to urge the knob (8) to the opposite side to the push direction; anda second urging unit (Sp2) configured to urge the movable board (9) to the other side in the radial direction,the first urging unit (Sp1) being provided on one side of the knob (8) in the radial direction to cause an urging force from the first urging unit (Sp1) to act on the one side of the knob, andthe leg portion (83) being provided on the other side of the knob (8) in the radial direction to cause an urging force from the second urging unit (Sp2) to act on the other side of the knob.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013087845A JP6188397B2 (en) | 2013-04-18 | 2013-04-18 | Push switch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2793245A1 true EP2793245A1 (en) | 2014-10-22 |
EP2793245B1 EP2793245B1 (en) | 2016-07-20 |
Family
ID=50349483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14161183.0A Not-in-force EP2793245B1 (en) | 2013-04-18 | 2014-03-21 | Push switch |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2793245B1 (en) |
JP (1) | JP6188397B2 (en) |
KR (1) | KR102124852B1 (en) |
CN (1) | CN104112615B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4194999A1 (en) * | 2021-12-08 | 2023-06-14 | Giga-Byte Technology Co., Ltd. | Circuit board module |
EP4198684A1 (en) * | 2021-12-08 | 2023-06-21 | Giga-Byte Technology Co., Ltd. | Circuit board module and release component |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7491044B2 (en) * | 2020-05-14 | 2024-05-28 | 株式会社Jvcケンウッド | Push button structure and electronic device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3916150A (en) * | 1974-03-04 | 1975-10-28 | Stackpole Component Co | Data machine keyboard assembly with elongated key cap for actuating an electric switch |
JP2001243850A (en) | 1999-12-21 | 2001-09-07 | Niles Parts Co Ltd | Composite switch device |
DE102006036143A1 (en) * | 2006-07-31 | 2008-02-07 | Valeo Schalter Und Sensoren Gmbh | switch module |
DE202008002853U1 (en) * | 2008-02-28 | 2009-07-09 | Saia-Burgess Halver Gmbh | Electrical switching device, such as pushbutton switch or the like. |
EP2405539A2 (en) * | 2009-03-05 | 2012-01-11 | Chang Ho Kim | Standby power shut-off device and a control method therefor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57101311A (en) * | 1980-12-16 | 1982-06-23 | Mitsumi Electric Co Ltd | Pushbutton type switch |
JPS5939837U (en) * | 1982-09-07 | 1984-03-14 | アルプス電気株式会社 | push button switch |
-
2013
- 2013-04-18 JP JP2013087845A patent/JP6188397B2/en not_active Expired - Fee Related
-
2014
- 2014-03-21 EP EP14161183.0A patent/EP2793245B1/en not_active Not-in-force
- 2014-04-17 KR KR1020140046040A patent/KR102124852B1/en active IP Right Grant
- 2014-04-18 CN CN201410157704.XA patent/CN104112615B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3916150A (en) * | 1974-03-04 | 1975-10-28 | Stackpole Component Co | Data machine keyboard assembly with elongated key cap for actuating an electric switch |
JP2001243850A (en) | 1999-12-21 | 2001-09-07 | Niles Parts Co Ltd | Composite switch device |
DE102006036143A1 (en) * | 2006-07-31 | 2008-02-07 | Valeo Schalter Und Sensoren Gmbh | switch module |
DE202008002853U1 (en) * | 2008-02-28 | 2009-07-09 | Saia-Burgess Halver Gmbh | Electrical switching device, such as pushbutton switch or the like. |
EP2405539A2 (en) * | 2009-03-05 | 2012-01-11 | Chang Ho Kim | Standby power shut-off device and a control method therefor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4194999A1 (en) * | 2021-12-08 | 2023-06-14 | Giga-Byte Technology Co., Ltd. | Circuit board module |
EP4198684A1 (en) * | 2021-12-08 | 2023-06-21 | Giga-Byte Technology Co., Ltd. | Circuit board module and release component |
US11917762B2 (en) | 2021-12-08 | 2024-02-27 | Giga-Byte Technology Co., Ltd. | Circuit board module |
Also Published As
Publication number | Publication date |
---|---|
CN104112615A (en) | 2014-10-22 |
CN104112615B (en) | 2017-11-24 |
KR20140125318A (en) | 2014-10-28 |
JP2014212038A (en) | 2014-11-13 |
EP2793245B1 (en) | 2016-07-20 |
KR102124852B1 (en) | 2020-06-19 |
JP6188397B2 (en) | 2017-08-30 |
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