WO2020044963A1 - Switch and operating device - Google Patents

Switch and operating device Download PDF

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Publication number
WO2020044963A1
WO2020044963A1 PCT/JP2019/030625 JP2019030625W WO2020044963A1 WO 2020044963 A1 WO2020044963 A1 WO 2020044963A1 JP 2019030625 W JP2019030625 W JP 2019030625W WO 2020044963 A1 WO2020044963 A1 WO 2020044963A1
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WO
WIPO (PCT)
Prior art keywords
movable contact
switch
pressing
contact
contact piece
Prior art date
Application number
PCT/JP2019/030625
Other languages
French (fr)
Japanese (ja)
Inventor
成信 岸
Original Assignee
オムロン株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by オムロン株式会社 filed Critical オムロン株式会社
Priority to CN201980046409.8A priority Critical patent/CN112424896A/en
Publication of WO2020044963A1 publication Critical patent/WO2020044963A1/en

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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
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs

Definitions

  • the present invention includes a switch that includes a fixed contact, a movable contact piece having a movable contact, and a pressing member that presses the movable contact piece by receiving an external pressure, wherein the movable contact contacts the fixed contact by pressing the pressing member. , And an operating device using such a switch.
  • Patent Literature 1 discloses a switch that has both characteristics of a slide switch and a snap action switch, and that presses an operation button to press an inner actuator and contact a movable contact with a normally open contact. It has been disclosed.
  • the switch disclosed in Patent Literature 1 has a structure in which the movable contact and the normally-open contact are in sliding contact with each other, so that a silent sound is improved without generating a collision sound.
  • Patent Document 1 As disclosed in Patent Document 1, there is a demand for a switch excellent in noise reduction, and in addition to the structure disclosed in Patent Document 1, a switch having a structure excellent in noise reduction effect is demanded. .
  • the present invention has been made in view of such circumstances, and has a flexible structure.
  • One end side is a swing fulcrum, and the other end side is provided with a shock-absorbing member arranged to abut on a movable contact piece serving as a movable contact.
  • An object of the present invention is to provide a switch for suppressing generation of sound by providing the switch.
  • Another object of the present invention is to provide an operating device using such a switch.
  • the switch described in the present application is a fixed contact, has flexibility, one end side is a swing fulcrum, the other end side is a movable contact piece serving as a movable contact, and receives pressure from the outside, A switch that presses between a swing fulcrum of the movable contact piece and a movable contact, wherein the movable contact piece swings by being pressed by the pressing member, and the movable contact contacts the fixed contact. And a buffer member provided so as to contact the movable contact piece.
  • the movable contact piece has an urging portion that generates a reaction force that opposes the pressing of the pressing member, between the contact portion receiving the pressing of the pressing member and the movable contact.
  • the shock-absorbing member is a shock-absorbing portion shock-absorbing member that is disposed so as to abut on the urging portion formed on the movable contact piece.
  • the movable contact piece bends under the pressure of the pressing member, receives further pressing, and the movable contact side is pivoted with a locking portion at which the urging portion is locked as a swing axis. It is characterized in that it is formed so as to come into contact with the fixed contact by swinging.
  • the switch is characterized in that the switch includes a contact buffer member disposed so that the other end side of the movable contact piece abuts when the pressing member is not pressed from the outside.
  • the movable contact of the movable contact piece is formed in an elastic shape at the other end.
  • the pressing member contacts the movable contact piece at a plurality of contact sites and presses the movable contact piece.
  • the operation device includes a pressing operation unit that receives a pressing operation from the outside, and the switch that transmits the pressing operation received by the pressing operation unit as a pressing from the outside, and the switch includes the switch.
  • a signal based on the operation of the movable contact is output.
  • the switch and the operating device described in the present application have flexibility, and one end side is provided with a cushioning member that comes into contact with a movable contact piece serving as a swing fulcrum and the other end side as a movable contact. Mitigates the impact due to the movement of the piece.
  • the switch and the operating device according to the present invention are provided with a buffer member that is flexible and has one end contacting a movable fulcrum at one end and a movable contact piece serving as a movable contact at the other end.
  • FIG. 1 is a schematic perspective view illustrating an example of the appearance of a switch described in the present application.
  • FIG. 1 is a schematic exploded perspective view showing an example of a switch described in the present application.
  • FIG. 2 is a schematic cross-sectional view illustrating an example of a cross section of the switch described in the present application.
  • FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application.
  • FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application.
  • It is a schematic external view showing an example of a movable contact piece provided in the switch described in the present application.
  • FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application.
  • FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application.
  • FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application.
  • FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application.
  • FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application.
  • FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application.
  • FIG. 4 is a graph schematically showing an example of a relationship between a push amount of a switch and an operation load described in the present application as a dynamic system model.
  • FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application.
  • FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application.
  • the operating device described in the present application is used, for example, as an operating device such as a mouse used for operating a personal computer (hereinafter, referred to as a personal computer).
  • the switch described in the present application is used as a microswitch in devices such as various electronic devices including an operation device.
  • the operating device 1 and the switch 2 illustrated in the drawings will be described with reference to the drawings.
  • FIG. 1 is a schematic perspective view showing an example of the appearance of the operating device 1 described in the present application.
  • FIG. 1 shows an example in which the operating device 1 described in the present application is applied to a mouse used for operating an electronic device such as a personal computer.
  • the operating device 1 includes a pressing operation unit 10 such as a mouse button that receives an operation of pressing with an operator's finger, and a rotating operation unit 11 such as a mouse wheel that receives an operation of rotating with the finger of the operator. .
  • the rotation operation unit 11 is configured to receive not only a rotation operation but also a pressing operation, and also functions as the pressing operation unit 10.
  • the operating device 1 is connected to a signal line 12 that outputs an electric signal to an external device such as a personal computer.
  • the operation device 1 is not limited to wired communication using the signal line 12, and can output an electric signal by various communication methods such as wireless communication.
  • a switch 2 described later is accommodated in the operation device 1 for each of the press operation units 10 and the rotation operation units 11.
  • the operation of the press operation unit 10 is performed.
  • An internal part presses the corresponding switch 2.
  • the switch 2 outputs a signal based on the pressing state from the signal line 12 to an external electronic device such as a personal computer.
  • the operating device 1 described in the present application includes a pressing operation unit 10 that receives a pressing operation from the outside, a turning operation unit 11 that receives an operation such as a turning operation, and a switch 2 inside.
  • the operating device 1 transmits the pressing operation received by the pressing operation unit 10 and / or the rotating operation unit 11 to the switch 2 as an external pressing, and outputs a signal based on the operation of the switch 2 to an external electronic device. I do.
  • FIG. 2 is a schematic perspective view showing an example of the appearance of the switch 2 described in the present application.
  • the direction of the switch 2 is such that the left front side is forward, the right rear side is rearward, the upper side is up, the lower side is down, the left rear side is left, and the right front side is right, as viewed in FIG. Although it is expressed, it is a direction for convenience of explanation, and does not limit the mounting direction of the switch 2.
  • the switch 2 is housed as a microswitch inside the electronic device such as the operating device 1 and receives a pressing operation received by a part such as the pressing operation unit 10 of the operating device 1 as an external pressing.
  • the switch 2 includes a substantially rectangular parallelepiped housing 20.
  • the housing 20 is formed by a lower base 20a and an upper cover 20b.
  • a rectangular insertion hole 200 through which the pressing member 21 is inserted is formed on the upper surface of the housing 20 at a position on the left side from the center when viewed from the front.
  • the pressing member 21 inserted into the insertion hole 200 is a member that moves up and down by being pressed from the outside of the housing 20, and the upper end of the pressing member 21 protrudes from the upper surface of the housing 20.
  • the pressing operation from the outside received by the operating device 1 is transmitted to the pressing member 21 as the pressing from the outside of the housing 20.
  • the pressing member 21 moves downward in response to an external pressure, and moves upward when the external pressure is released.
  • FIG. 3 is a schematic exploded perspective view showing an example of the switch 2 described in the present application.
  • FIG. 4 is a schematic sectional view showing an example of a section of the switch 2 described in the present application.
  • FIG. 4 shows a cross section cut along a vertical plane including the line AB shown in FIG. 2 in the direction of the arrow.
  • An area as a contact chamber for accommodating a contact mechanism for opening and closing an electric circuit is secured in the housing 20 of the switch 2.
  • An insertion hole 200 penetrating from the outside of the housing 20 is formed on the upper surface of the contact chamber, and the pressing member 21 is inserted into the insertion hole 200.
  • the contact mechanism accommodated in the contact chamber will be described.
  • members such as a common contact terminal 23, a first contact terminal 24, a second contact terminal 25, and a movable contact piece 26 are provided as a contact mechanism.
  • the common contact terminal 23 is disposed on the left side in the contact chamber, and is electrically connected to the connection terminal portion 22 on the left side.
  • the first contact terminal 24 is disposed on the upper right side in the contact chamber, and is electrically connected to the right connection terminal portion 22.
  • the second contact terminal 25 is disposed on the lower right side in the contact chamber, and is electrically connected to the central connection terminal portion 22.
  • the movable contact piece 26 is a plate-shaped conductive metal member extending in the left-right direction in the contact chamber.
  • the left end side of the movable contact piece 26 is a fixed end that is locked to the common contact terminal 23 and functions as a swing fulcrum 260.
  • the right end side of the movable contact piece 26 is a free end that moves between the first contact terminal 24 and the second contact terminal 25, and is a movable contact 261.
  • the movable contact piece 26 is formed with an urging portion 262 that functions as a return spring whose center is punched out and bent in an arc shape, and a tip of the urging portion 262 is formed near the center in the contact chamber.
  • the locking plate 27 is locked.
  • the urging portion 262 generates a reaction force against the pressing of the pressing member 21.
  • a contact buffer member 28 made of an elastic material is provided above the first contact terminal 24 .
  • the contact buffer member 28 is in contact with the first contact terminal 24 from above.
  • an urging portion buffer member 29 formed of an elastic material is disposed below the urging portion 262 of the movable contact piece 26.
  • the urging portion buffer member 29 is in contact with the urging portion 262 from below.
  • the pressing member 21 receives an external pressure and moves downward to press the movable contact piece 26.
  • the right end which is the free end of the movable contact piece 26, is lowered, and the movable contact 261 contacts the second contact terminal 25.
  • the left connection terminal portion 22 connected to the common contact terminal 23 and the center connection terminal portion 22 connected to the second contact terminal 25 are brought into conduction.
  • the movable contact piece 26 When the pressing of the pressing member 21 is released, the movable contact piece 26 is urged upward by the reaction force of the urging portion 262. When the movable contact piece 26 is urged upward, the pressing member 21 moves upward. Further, when the movable contact piece 26 is urged upward by the urging portion 262, the movable contact 261 located on the right end side of the movable contact piece 26 rises and comes into contact with the contact buffer member 28. When the movable contact 261 of the movable contact piece 26 is raised, the movable contact 261 may be brought into contact with the first contact terminal 24 covered by the contact buffer member 28. In this case, the movable contact piece 26 comes into indirect contact with the contact buffer member 28.
  • FIG. 5A and 5B are schematic external views illustrating an example of the pressing member 21 included in the switch 2 described in the present application.
  • FIG. 5A is a schematic front view
  • FIG. 5B is a schematic perspective view viewed from obliquely below.
  • the pressing member 21 includes an upper pressed protrusion 210 and a lower pressing plate 211.
  • the pressed protrusion 210 of the pressing member 21 has a substantially rectangular parallelepiped shape, and an upper end is formed as a curved surface having a semicircular shape in a front view.
  • the pressed projection 210 has an upper portion protruding from the insertion hole 200 of the housing 20 and receives external pressure.
  • the pressing plate 211 has a substantially rectangular shape in a plan view, and the lower surface facing the movable contact piece 26 is formed in a substantially planar shape.
  • the left end of the lower surface of the pressing plate 211 is formed so as to be inclined upward in a tapered shape, and a first ridgeline 211a serving as a boundary between the flat portion and the tapered portion extends linearly forward and backward.
  • the portion that comes into contact with the movable contact piece 26 is a portion that slightly projects rightward at the front end and the rear end.
  • the pressing member 21 contacts the movable contact piece 26 at a plurality of locations including at least the first ridgeline 211a and the second ridgeline 211b.
  • FIG. 6A and 6B are schematic external views showing an example of the movable contact piece 26 included in the switch 2 described in the present application.
  • FIG. 6A is a schematic plan view
  • FIG. 6B is a schematic perspective view as viewed obliquely from below.
  • the movable contact piece 26 is a flexible member formed of a thin metal plate.
  • the movable contact piece 26 has a substantially rectangular shape in a plan view, and the right end, which is a free end, is formed as a movable contact 261, and a contact projection 261 a is provided on the lower surface of the movable contact 261.
  • the contact protrusion 261a is provided on the lower surface side of the elastic piece 261b punched out so as to extend from the right end to the left.
  • the elastic piece 261b has a substantially rectangular shape, and one side on the right side is continuous with the left end of the movable contact piece 26. Since the elastic piece 261b swings around the continuous part as a fulcrum, it has an elastic shape having elasticity. .
  • the aforementioned urging portion 262 is formed on the left side of the elastic piece 261b.
  • the biasing portion 262 is formed by bending a portion punched out so as to extend in a belt shape from the right side to the left side so as to function as a return spring into an arc shape with a downward convex.
  • the tip of the urging portion 262 is a locking portion 262a that is locked by a locking plate 27 protruding from the base 20a of the housing 20, and the pressing portion 262 is locked by the locking plate 27.
  • the movable contact 261 on the right side swings with the locked portion 262a as the swing axis.
  • FIGS. 7A and 7B are schematic perspective views illustrating an example of a buffer member provided in the switch 2 described in the present application.
  • FIG. 7A shows the contact buffer member 28.
  • the contact cushioning member 28 is a member formed by molding an elastic material such as polyurethane rubber, and is formed by combining the upper member 280 and the lower member 281.
  • the upper member 280 has a substantially rectangular parallelepiped shape, and the right end side in contact with the inner wall surface of the housing 20 extends downward and is fixed.
  • a notch for fitting the first contact terminal 24 is formed in the portion to be fixed.
  • a lower member 281 having a U-shape in plan view is affixed to the lower surface on the left end side of the upper member 280.
  • the contact buffering member 28 formed by the upper member 280 and the lower member 281 covers the first contact terminal 24, and the movable contact 261, which is a free end of the movable contact piece 26, is directly or first contact terminal 24. And indirectly comes into contact with the lower member 281 of the contact buffer member 28 via.
  • FIG. 7B shows the urging portion buffer member 29.
  • the urging portion buffer member 29 is a member formed by molding an elastic material such as polyurethane rubber, and has a shape in which a substantially rectangular parallelepiped base portion 291 is formed on the lower surface of a plate-like body 290 having a substantially rectangular shape in plan view. A notch is formed on the inner side of the plate-shaped body 290 so that the second contact terminal 25 is fitted. The plate-shaped body 290 is in contact with the lower surface of the urging portion 262 on the upper surface on the left end side.
  • the base portion 291 is formed on the right side of the plate-like body 290, the left end side of the plate-like body 290 is bent as shown by an arrow in the figure due to the swing of the urging portion 262, and absorbs an impact. I do.
  • 8 to 11 are schematic sectional views showing an example of the operation of the switch 2 described in the present application. 8 to 11 show cross sections taken along a vertical plane including the line AB shown in FIG. 2 from a front view.
  • FIG. 8 shows a state where the pressing member 21 is not pressed from the outside.
  • the lower end of the pressing member 21 is a portion between the swing fulcrum 260 at which the left end of the movable contact piece 26 is locked and the position at which the locking portion 262a at the tip of the urging portion 262 of the movable contact piece 26 is locked.
  • the lower surface of the lower pressing plate 211 is in contact with the movable contact piece 26.
  • the movable contact piece 26 is moved upward by a reaction force against the pressing of the pressing member 21 by the urging portion 262 located between the contact portion receiving the pressing of the pressing member 21 and the movable contact 261. Therefore, the free end formed as the movable contact 261 is in contact with the contact cushioning member 28 disposed on the upper right side in the contact chamber.
  • FIG. 9 shows a state in which the pressing member 21 has been moved downward by receiving an external pressure from the state shown in FIG.
  • the pressing plate 211 located below the pressing member 21 presses the movable contact piece 26 downward.
  • the pressing member 21 comes into contact with the movable contact piece 26 at two points of the first ridge line 211a and the second ridge line 211b of the pressing plate 211.
  • the entire movable contact piece 26 is pressed by the pressing member 21 and tends to move downward with the swing fulcrum 260 as the swing axis.
  • the movable contact piece 26 is pushed upward by a reaction force against the pressing of the pressing member 21 by the urging portion 262 located between the contact portion receiving the pressing of the pressing member 21 and the movable contact 261.
  • the movable contact 261 maintains a state of being in contact with the contact buffer member 28 disposed on the upper right side in the contact chamber. Therefore, the movable contact piece 26 receives the pressure from the pressing member 21 and bends downward to be bent.
  • FIG. 10 shows a state in which the pressing member 21 has been moved downward by receiving further pressing from the outside from the state shown in FIG.
  • the entire movable contact piece 26 is pressed by the pressing member 21 and attempts to move downward with the swing fulcrum 260 as the swing axis. Since the urging portion 262 of the movable contact piece 26 swings downward about the locking portion 262a locked on the locking plate 27 as a swing axis, the entire movable contact piece 26 is inverted. Oscillate with the fulcrum 260 as the oscillating axis. Therefore, the contact protrusion 261a of the movable contact 261 contacts the second contact terminal 25 provided as a fixed contact on the lower right side in the contact chamber. As a result, the left connection terminal portion 22 connected to the common contact terminal 23 and the center connection terminal portion 22 connected to the second contact terminal 25 become conductive.
  • the contact protrusion 261a of the movable contact 261 collides with the second contact terminal 25 with the reversing momentum of the movable contact piece 26, and thus involves an impact.
  • the movable contact of the movable contact piece 26 261 absorbs the impact when it collides with the second contact terminal 25 and the impact generated when the urging portion 262 swings. Then, by alleviating the impact when the movable contact 261 of the movable contact piece 26 collides with the second contact terminal 25, generation of sound due to the collision is suppressed.
  • the contact protrusion 261a of the movable contact 261 is formed on the elastic piece 261b having an elastic shape, the impact with the second contact terminal 25 is reduced, and the sound generated at that time is suppressed.
  • FIG. 11 shows a state in which the pressing member 21 has been further pressed from the outside and moved to the lowest point of the movable range from the state shown in FIG.
  • the entire movable contact piece 26 is pressed by the pressing member 21 and tends to move downward with the swing fulcrum 260 as the swing axis. Accordingly, the movable contact piece 26 is bent so as to be bent downward while being supported by the swing fulcrum 260 and the movable contact 261 at both ends.
  • the movable contact piece 26 When the pressing of the pressing member 21 is released, the movable contact piece 26 is urged upward by the reaction force of the urging portion 262. When the movable contact piece 26 is urged upward, the pressing member 21 moves upward. When the movable contact piece 26 is urged upward by the urging portion 262, the movable contact 261, which is a free end of the movable contact piece 26, rises and comes into contact with the contact buffer member 28. That is, the state illustrated in FIG. 8 is obtained. The movable contact piece 26 collides with the contact cushioning member 28 when the pressing of the pressing member 21 is released and the movable contact piece 26 rises. The impact due to the collision is absorbed by the contact buffer member 28.
  • the contact buffer member 28 Even if the movable contact piece 26 is designed to collide with the first contact terminal 24 covered by the contact buffer member 28, the impact due to the collision of the movable contact piece 26 does not affect the contact buffer. It is absorbed by the member 28. That is, since the movable contact piece 26 directly or indirectly comes into contact with the contact buffer member 28 via the first contact terminal 24, the contact buffer member 28 reduces the impact at the time of collision, and Suppress the generation of sound.
  • the switch 2 described in the present application is provided with the contact cushioning member 28, the urging portion cushioning member 29, and the elastic shape of the elastic piece 261b protruding from the contact point of the movable contact 261 at the time of collision of various members. And excellent effects such as a silent effect of suppressing generation of sound due to collision.
  • FIG. 12A is an explanatory diagram schematically illustrating an example of a dynamic system model regarding the pressing member 21 and the movable contact piece 26 included in the switch 2 described in the present application.
  • FIG. 12B is a diagram for comparison, and is an explanatory diagram schematically illustrating an example of a dynamic system model related to the pressing member 21x and the movable contact piece 26x included in the conventional switch 2x.
  • 12A and 12B show the pressing members 21 and 21x and the movable contact pieces 26 and 26x from a front view.
  • the dashed line indicates the center of the force that presses the movable contact pieces 26 and 26x in response to external pressure
  • the arrows indicate that the pressing members 21 and 21x move the movable contact pieces 26 and 26x. Shows the force applied to
  • the lower surface of the pressing plate 211 formed below the pressing member 21 included in the switch 2 described in the present application is formed in a substantially planar shape. Since the movable contact piece 26 is pressed by the pressing member 21 to bend and bend downward, the pressing member 21 comes into contact with the movable contact piece 26 at two contact portions of the first ridge line 211a and the second ridge line 211b. . That is, the pressing member 21 receives the external pressure and presses the movable contact piece 26 with respect to the center of the force that presses the movable contact piece 26.
  • the pressing member 21 presses the movable contact piece 26 at two contact sites as indicated by arrows in the drawing.
  • the lower part of the pressing member 21x is formed in an arc shape that protrudes downward, and the pressing member 21x substantially coincides with the center of the pressing force.
  • the movable contact piece 26x is brought into contact with the contact piece 26x at one contact point, and the movable contact piece 26x is pressed at one contact point as shown by the arrow in the figure.
  • FIGS. 13, 14A and 14B are explanatory diagrams schematically showing an example of a dynamic system model of a conventional switch 2x.
  • FIG. 13 is an explanatory diagram schematically showing the relationship between the load and the movable contact piece 26x as a dynamic system model.
  • FIGS. 14A and 14B show the relationship between the pushing amount of the conventional switch 2x and the operation load in the dynamic system model. It is a graph shown roughly as a model.
  • FIG. 13 shows a cross section obtained by cutting the switch 2x in a vertical plane from a front view, and shows the movement of the movable contact piece 26x intermittently.
  • FIG. 13 does not show the contact buffer member 28x and the urging portion buffer member 29x because the switch 2x is a conventional switch.
  • FIG. 13 shows a cross section obtained by cutting the switch 2x in a vertical plane from a front view, and shows the movement of the movable contact piece 26x intermittently.
  • FIG. 13 does not show the contact buffer member 28x and the urging
  • FIG. 14A schematically illustrates the relationship between the load and the deflection of the support beam at both ends
  • FIG. 14B schematically illustrates the timing of the reversing operation.
  • FIG. 15 is a graph in which the horizontal axis represents the amount of depression (operation stroke) of the pressing member 21x when the pressing member 21x of the switch 2x is pushed downward, and the vertical axis represents the operation load received by the pressing member 21x when pushed. This shows the relationship.
  • the pressing member 21x comes into contact with the movable contact piece 26x at one contact portion in the pressing process.
  • the dashed white arrows indicate the pressing force when the pressing member 21x contacts the movable contact piece 26x at the position A shown in FIG.
  • the broken line indicates the relationship between the pushing amount and the operating load when the pressing member 21x contacts the movable contact piece 26x at the position A shown in FIG.
  • FIGS. 13, 14A and 14B and the dashed-dotted line shown in FIG. 15 indicate that the pressing member 21x is movable at a position C on the movable contact 261x side (right side in the drawing) from the position A.
  • the pressing force and the relationship when assuming that it contacts the contact piece 26x are shown.
  • FIG. 14A shows the relationship between the pressing force on the movable contact piece 26x and the movable contact piece 26x, assuming a support beam at both ends. Assuming a support beam at both ends, the force required to generate the same deflection is greatest at position B near the swing fulcrum 260x, and then decreases in the order of position A and position C.
  • FIG. 14B shows the timing of the reversing operation, in which the position B near the swing fulcrum 260x is the latest, and then the position A and the position C are earlier. From these relationships, a graph shown in FIG. 15 is obtained. In FIG. 15, the point at which the operation load suddenly decreases is the position where the movable contact piece 26x is inverted. As shown in FIG. 15, the load increases in the reverse position in the order closer to the swing fulcrum 260x, and the timing of the reverse operation with respect to the pushing amount is delayed. Then, a loud sound is generated during the inversion operation.
  • FIG. 16 is an explanatory diagram schematically showing an example of the dynamic system model of the switch 2 described in the present application.
  • FIG. 17 is a schematic diagram showing an example of the relationship between the pushing amount and the operation load of the switch 2 described in the present application as the dynamic system model. It is a graph shown typically.
  • illustration of the contact buffer member 28 and the urging portion buffer member 29 is omitted so that the movement of the movable contact piece 26 can be easily understood.
  • a silent effect other than the silent effect by these buffer members will be described.
  • the pressing member 21 included in the switch 2 described in the present application has a planar lower surface, and thus contacts the movable contact piece 26 at two contact sites during the pressing process.
  • FIG. 16 is an explanatory diagram schematically showing an example of the dynamic system model of the switch 2 described in the present application.
  • FIG. 17 is a schematic diagram showing an example of the relationship between the pushing amount and the operation load of the switch 2 described in the present application as the dynamic system model. It is a graph shown typically.
  • broken arrows indicated by broken lines, solid lines, and dashed-dotted lines indicate the pressing force when contacting the movable contact piece 26 at positions corresponding to the positions A, B, and C illustrated in FIG. 13. Indicated for.
  • the bold line shows the relationship between the pushing amount and the operation load of the switch 2 described in the present application
  • the broken line, the solid line, and the one-dot chain line show the relationship between the pushing amount and the operation load at the positions A, B, and C. Shown for comparison.
  • the pressing member 21 receives a pressing from the outside, comes into contact with the movable contact piece 26 at the first ridge line 211a and the second ridge line 211b, and presses the movable contact piece 26.
  • the movable contact piece 26 pressed by the pressing member 21 maintains the state of being in contact with the first ridge line 211a and the second ridge line 211b while bending, but the reaction force and the ratio thereof to the first ridge line 211a and the second ridge line 211b are , And changes according to the pushing amount.
  • the relationship between the pushing amount and the operation load does not change suddenly as in the case of pressing at one contact portion of the position A, the position B, and the position C, but changes as shown by the thick line in FIG. . That is, when the movable contact piece 26 is inverted, the switching time from the state in which the movable contact piece 26 is in contact with the first contact terminal 24 to the time when the movable contact piece 26 collides with the second contact terminal 25 becomes longer, and the contact protrusion 261a of the movable contact 261 becomes second contact. The speed of the collision with the terminal 25 is reduced.
  • the shock at the time of the collision is alleviated, and a noise generated by the collision of the contact protrusion 261a, that is, a so-called click sound is reduced, so that a silent effect is obtained.
  • the switch 2 described in the present application can suppress the generation of sound as compared with the case where the pressing member 21 contacts the movable contact piece 26 at a plurality of locations, as compared with the case where the pressing member 21 contacts the movable contact piece 26 at one location. It is.
  • the shape of the pressing member 21 is not limited to the above-described embodiment, but may be changed to various shapes as long as the pressing member 21 comes into contact with the movable contact piece 26 at a plurality of locations during pressing.
  • 18A and 18B are schematic external views illustrating an example of the pressing member 21 included in the switch 2 described in the present application.
  • FIG. 18A is a schematic front view
  • FIG. 18B is a schematic perspective view as viewed obliquely from below.
  • portions corresponding to the first ridge line 211a and the second ridge line 211b protrude downward, and form a first contact protrusion 211c and a second contact protrusion 211d.
  • the switch 2 includes the shape of the pressing member 21, the shape of various members such as the shape near the movable contact 261 of the movable contact piece 26, the contact buffer member 28, and the like.
  • the cushioning member such as the biasing portion cushioning member 29 provides excellent effects such as suppressing the generation of sound accompanying the operation of the movable contact piece 26.
  • the example of the contact buffer member 28 formed so that the first contact terminal 24 is fitted is shown.
  • the present invention is not limited to this. It can be developed in various forms such as forming only members.
  • a mouse is exemplified as the operation device 1 including the switch 2.
  • the present invention is not limited to this, and various devices such as a keyboard and various push buttons used for operation are applied as the operation device 1. Can be developed in various forms.

Landscapes

  • Push-Button Switches (AREA)

Abstract

[Problem] To provide a switch and operating device having an excellent silencing effect. [Solution] This switch 2 comprises: a fixed contact 25; a movable contactor 26 which is flexible, and which has a rocking fulcrum 260 at one end and a movable contact 261 at the other end; and a pressing member 21 which, in response to being pressed from the outside, presses between the rocking fulcrum 260 and the movable contact 261 of the movable contactor 26. The movable contactor 26 rocks when pressed by the pressing member 21, and the movable contact 261 comes into contact with the fixed contact 25. Moreover, the switch 2 is equipped with: a buffer member 28 for contact which is positioned to touch the movable contactor 26; and a buffer member 29 for biasing portion, which is positioned to touch a biasing portion 262 formed in the movable contactor 26 so as to generate a reactive force against the pressing of the pressing member 21.

Description

スイッチ及び操作装置Switches and operating devices
　本発明は、固定接点と、可動接点を有する可動接触片と、外部からの押圧を受けて可動接触片を押圧する押圧部材とを備え、押圧部材の押圧により可動接点が固定接点と接触するスイッチ、及びそのようなスイッチを用いた操作装置に関する。 The present invention includes a switch that includes a fixed contact, a movable contact piece having a movable contact, and a pressing member that presses the movable contact piece by receiving an external pressure, wherein the movable contact contacts the fixed contact by pressing the pressing member. , And an operating device using such a switch.
　電子機器等の装置に用いられるスイッチが普及している。例えば、特許文献１には、スライド式のスイッチとスナップアクション式のスイッチとの両方の特性を備え、操作ボタンを押し込むことで、インナーアクチュエータを押圧し、可動接点を常開接点に接触させるスイッチが開示されている。特許文献１に開示されたスイッチは、可動接点と常開接点とが摺動接触する構造となっているため、衝突音が発生することなく、静音性を向上させている。 ス イ ッ チ Switches used in devices such as electronic devices have become widespread. For example, Patent Literature 1 discloses a switch that has both characteristics of a slide switch and a snap action switch, and that presses an operation button to press an inner actuator and contact a movable contact with a normally open contact. It has been disclosed. The switch disclosed in Patent Literature 1 has a structure in which the movable contact and the normally-open contact are in sliding contact with each other, so that a silent sound is improved without generating a collision sound.
特開２００８－２１０６５４号公報JP 2008-210654 A
　特許文献１にも開示されているように、静音性に優れたスイッチに対する要求があり、特許文献１に開示されている構造以外にも、静音効果に優れた構造を備えるスイッチが求められている。 As disclosed in Patent Document 1, there is a demand for a switch excellent in noise reduction, and in addition to the structure disclosed in Patent Document 1, a switch having a structure excellent in noise reduction effect is demanded. .
　本発明は斯かる事情に鑑みてなされたものであり、可撓性を有し、一端側が揺動支点、他端側が可動接点となる可動接触片に当接するように配設された緩衝部材を備えることにより、音の発生を抑制するスイッチの提供を目的とする。 The present invention has been made in view of such circumstances, and has a flexible structure. One end side is a swing fulcrum, and the other end side is provided with a shock-absorbing member arranged to abut on a movable contact piece serving as a movable contact. An object of the present invention is to provide a switch for suppressing generation of sound by providing the switch.
　また、本発明は、そのようなスイッチを用いた操作装置の提供を他の目的とする。 Another object of the present invention is to provide an operating device using such a switch.
　上記課題を解決するため、本願記載のスイッチは、固定接点と、可撓性を有し、一端側が揺動支点、他端側が可動接点となる可動接触片と、外部からの押圧を受けて、前記可動接触片の揺動支点及び可動接点の間を押圧する押圧部材とを備え、前記可動接触片は、前記押圧部材に押圧されて揺動し、前記可動接点が前記固定接点と接触するスイッチであって、前記可動接触片に当接するように配設された緩衝部材を備えることを特徴とする。 In order to solve the above problems, the switch described in the present application is a fixed contact, has flexibility, one end side is a swing fulcrum, the other end side is a movable contact piece serving as a movable contact, and receives pressure from the outside, A switch that presses between a swing fulcrum of the movable contact piece and a movable contact, wherein the movable contact piece swings by being pressed by the pressing member, and the movable contact contacts the fixed contact. And a buffer member provided so as to contact the movable contact piece.
　また、前記スイッチにおいて、前記可動接触片は、前記押圧部材の押圧を受ける接触部位及び前記可動接点の間に、前記押圧部材の押圧に抗する反力を生じさせる付勢部が形成されており、前記緩衝部材は、前記可動接触片に形成された付勢部に当接するように配設された付勢部用緩衝部材であることを特徴とする。 Further, in the switch, the movable contact piece has an urging portion that generates a reaction force that opposes the pressing of the pressing member, between the contact portion receiving the pressing of the pressing member and the movable contact. The shock-absorbing member is a shock-absorbing portion shock-absorbing member that is disposed so as to abut on the urging portion formed on the movable contact piece.
　また、前記スイッチにおいて、前記可動接触片は、前記押圧部材の押圧を受けて撓み、更なる押圧を受けて、前記付勢部が係止された係止部を揺動軸として前記可動接点側が揺動することにより、前記固定接点と接触するように形成されていることを特徴とする。 Further, in the switch, the movable contact piece bends under the pressure of the pressing member, receives further pressing, and the movable contact side is pivoted with a locking portion at which the urging portion is locked as a swing axis. It is characterized in that it is formed so as to come into contact with the fixed contact by swinging.
　また、前記スイッチにおいて、前記押圧部材が外部から押圧されていない場合に、前記可動接触片の他端側が当接するように配設された接点用緩衝部材を備えることを特徴とする。 In addition, the switch is characterized in that the switch includes a contact buffer member disposed so that the other end side of the movable contact piece abuts when the pressing member is not pressed from the outside.
　また、前記スイッチにおいて、前記可動接触片の可動接点は、他端部に弾性形状で形成されていることを特徴とする。 In the switch, the movable contact of the movable contact piece is formed in an elastic shape at the other end.
　また、前記スイッチにおいて、前記押圧部材は、前記可動接触片に複数の接触部位で接触して、前記可動接触片を押圧することを特徴とする。 In the switch, the pressing member contacts the movable contact piece at a plurality of contact sites and presses the movable contact piece.
　更に、本願記載の操作装置は、外部からの押下操作を受け付ける押下操作部と、前記押下操作部が受け付けた押下操作を外部からの押圧として伝達される前記スイッチとを備え、前記スイッチが備える前記可動接点の動作に基づく信号を出力することを特徴とする。 Further, the operation device according to the present application includes a pressing operation unit that receives a pressing operation from the outside, and the switch that transmits the pressing operation received by the pressing operation unit as a pressing from the outside, and the switch includes the switch. A signal based on the operation of the movable contact is output.
　本願記載のスイッチ及び操作装置は、可撓性を有し、一端側が揺動支点、他端側が可動接点となる可動接触片に当接する緩衝部材を配設することにより、緩衝部材が、可動接触片の動作に基づく衝撃を緩和する。 The switch and the operating device described in the present application have flexibility, and one end side is provided with a cushioning member that comes into contact with a movable contact piece serving as a swing fulcrum and the other end side as a movable contact. Mitigates the impact due to the movement of the piece.
　本発明に係るスイッチ及び操作装置は、可撓性を有し、一端側が揺動支点、他端側が可動接点となる可動接触片に当接する緩衝部材を配設する。これにより、緩衝部材が、可動接触片の動作に基づく衝撃を緩和するので、音の発生を抑制することが可能である等、優れた効果を奏する。 The switch and the operating device according to the present invention are provided with a buffer member that is flexible and has one end contacting a movable fulcrum at one end and a movable contact piece serving as a movable contact at the other end. Thereby, since the buffer member reduces the impact based on the operation of the movable contact piece, an excellent effect such as suppression of sound generation can be achieved.
本願記載の操作装置の外観の一例を示す概略斜視図である。It is a schematic perspective view showing an example of the appearance of the operating device described in the present application. 本願記載のスイッチの外観の一例を示す概略斜視図である。1 is a schematic perspective view illustrating an example of the appearance of a switch described in the present application. 本願記載のスイッチの一例を示す概略分解斜視図である。FIG. 1 is a schematic exploded perspective view showing an example of a switch described in the present application. 本願記載のスイッチの断面の一例を示す概略断面図である。FIG. 2 is a schematic cross-sectional view illustrating an example of a cross section of the switch described in the present application. 本願記載のスイッチが備える押圧部材の一例を示す概略外観図である。FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application. 本願記載のスイッチが備える押圧部材の一例を示す概略外観図である。FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application. 本願記載のスイッチが備える可動接触片の一例を示す概略外観図である。It is a schematic external view showing an example of a movable contact piece provided in the switch described in the present application. 本願記載のスイッチが備える可動接触片の一例を示す概略外観図である。It is a schematic external view showing an example of a movable contact piece provided in the switch described in the present application. 本願記載のスイッチが備える緩衝部材の一例を示す概略斜視図である。It is a schematic perspective view which shows an example of the buffer member with which the switch of this application is provided. 本願記載のスイッチが備える緩衝部材の一例を示す概略斜視図である。It is a schematic perspective view which shows an example of the buffer member with which the switch of this application is provided. 本願記載のスイッチの動作の一例を示す概略断面図である。FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application. 本願記載のスイッチの動作の一例を示す概略断面図である。FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application. 本願記載のスイッチの動作の一例を示す概略断面図である。FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application. 本願記載のスイッチの動作の一例を示す概略断面図である。FIG. 4 is a schematic cross-sectional view illustrating an example of the operation of the switch described in the present application. 本願記載のスイッチが備える押圧部材及び可動接触片に関する力学系モデルの一例を模式的に示す説明図である。It is explanatory drawing which shows typically an example of the dynamic system model regarding the pressing member and movable contact piece with which the switch of this application is provided. 従来型のスイッチが備える押圧部材及び可動接触片に関する力学系モデルの一例を模式的に示す説明図である。It is explanatory drawing which shows typically an example of the dynamic system model regarding the pressing member and movable contact piece with which the conventional switch is provided. 従来型のスイッチの力学系モデルの一例を模式的に示す説明図である。It is explanatory drawing which shows typically an example of the dynamic system model of the conventional switch. 従来型のスイッチの力学系モデルの一例を模式的に示す説明図である。It is explanatory drawing which shows typically an example of the dynamic system model of the conventional switch. 従来型のスイッチの力学系モデルの一例を模式的に示す説明図である。It is explanatory drawing which shows typically an example of the dynamic system model of the conventional switch. 従来型のスイッチの押込量及び操作荷重の関係を力学系モデルとして概略的に示すグラフである。It is a graph which shows roughly the relationship between the pushing amount of a conventional switch, and an operation load as a dynamic system model. 本願記載のスイッチの力学系モデルの一例を模式的に示す説明図である。It is explanatory drawing which shows typically an example of the dynamic system model of the switch of this application. 本願記載のスイッチの押込量及び操作荷重の関係の一例を力学系モデルとして概略的に示すグラフである。4 is a graph schematically showing an example of a relationship between a push amount of a switch and an operation load described in the present application as a dynamic system model. 本願記載のスイッチが備える押圧部材の一例を示す概略外観図である。FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application. 本願記載のスイッチが備える押圧部材の一例を示す概略外観図である。FIG. 3 is a schematic external view illustrating an example of a pressing member included in the switch described in the present application.
　＜適用例＞
　本願記載の操作装置は、例えば、パーソナルコンピュータ（以下、パソコンという）の操作に用いられるマウス等の操作装置として用いられる。また、本願記載のスイッチは、操作装置を含む様々な電子機器等の装置にマイクロスイッチとして用いられる。以下では、図面を参照しながら図面に例示された操作装置１及びスイッチ２について説明する。 <Application example>
The operating device described in the present application is used, for example, as an operating device such as a mouse used for operating a personal computer (hereinafter, referred to as a personal computer). In addition, the switch described in the present application is used as a microswitch in devices such as various electronic devices including an operation device. Hereinafter, the operating device 1 and the switch 2 illustrated in the drawings will be described with reference to the drawings.
　　＜操作装置１＞
　まず、操作装置１について説明する。図１は、本願記載の操作装置１の外観の一例を示す概略斜視図である。図１は、本願記載の操作装置１を、パソコン等の電子機器の操作に用いるマウスに適用した例を示している。操作装置１は、操作者の指にて押下する操作を受け付けるマウスボタン等の押下操作部１０、操作者の指にて回動する操作を受け付けるマウスホイール等の回動操作部１１を備えている。なお、回動操作部１１は、回動操作だけでなく、押下操作も受け付けるように構成されており、押下操作部１０としても機能する。また、操作装置１には、パソコン等の外部の機器に電気信号を出力する信号線１２が接続されている。なお、操作装置１は、信号線１２を用いた有線通信に限らず、無線通信等の様々な通信方法により電気信号を出力することが可能である。 <Operation device 1>
First, the operation device 1 will be described. FIG. 1 is a schematic perspective view showing an example of the appearance of the operating device 1 described in the present application. FIG. 1 shows an example in which the operating device 1 described in the present application is applied to a mouse used for operating an electronic device such as a personal computer. The operating device 1 includes a pressing operation unit 10 such as a mouse button that receives an operation of pressing with an operator's finger, and a rotating operation unit 11 such as a mouse wheel that receives an operation of rotating with the finger of the operator. . The rotation operation unit 11 is configured to receive not only a rotation operation but also a pressing operation, and also functions as the pressing operation unit 10. The operating device 1 is connected to a signal line 12 that outputs an electric signal to an external device such as a personal computer. The operation device 1 is not limited to wired communication using the signal line 12, and can output an electric signal by various communication methods such as wireless communication.
　操作装置１の内部には、各押下操作部１０及び回動操作部１１毎に、後述するスイッチ２が収容されており、押下操作部１０に対して押下操作をした場合、押下操作部１０の内部の部位が、対応するスイッチ２を押圧する。スイッチ２は、押圧状況に基づく信号を信号線１２から外部のパソコン等の電子機器へ出力する。 A switch 2 described later is accommodated in the operation device 1 for each of the press operation units 10 and the rotation operation units 11. When a press operation is performed on the press operation unit 10, the operation of the press operation unit 10 is performed. An internal part presses the corresponding switch 2. The switch 2 outputs a signal based on the pressing state from the signal line 12 to an external electronic device such as a personal computer.
　即ち、本願記載の操作装置１は、外部からの押下操作を受け付ける押下操作部１０と、回動操作等の操作を受け付ける回動操作部１１とを備え、更に内部にスイッチ２を備えている。そして、操作装置１は、押下操作部１０及び／又は回動操作部１１が受け付けた押下操作を外部からの押圧としてスイッチ２に伝達し、スイッチ２の動作に基づく信号を外部の電子機器へ出力する。 That is, the operating device 1 described in the present application includes a pressing operation unit 10 that receives a pressing operation from the outside, a turning operation unit 11 that receives an operation such as a turning operation, and a switch 2 inside. The operating device 1 transmits the pressing operation received by the pressing operation unit 10 and / or the rotating operation unit 11 to the switch 2 as an external pressing, and outputs a signal based on the operation of the switch 2 to an external electronic device. I do.
　＜スイッチ２＞
　次に、本願記載のスイッチ２について説明する。図２は、本願記載のスイッチ２の外観の一例を示す概略斜視図である。なお、本願明細書において、スイッチ２の方向については、図２に向かって左手前側を前、右奥側を後、上方を上、下方を下、左奥側を左、そして右手前側を右として表現するが、説明の便宜上の方向であり、スイッチ２の組込方向を限定するものではない。前述のようにスイッチ２は、操作装置１等の電子機器の内部にマイクロスイッチとして収容され、操作装置１の押下操作部１０等の部位が受け付けた押下操作を外部からの押圧として受け付ける。 <Switch 2>
Next, the switch 2 described in the present application will be described. FIG. 2 is a schematic perspective view showing an example of the appearance of the switch 2 described in the present application. In the specification of the present application, the direction of the switch 2 is such that the left front side is forward, the right rear side is rearward, the upper side is up, the lower side is down, the left rear side is left, and the right front side is right, as viewed in FIG. Although it is expressed, it is a direction for convenience of explanation, and does not limit the mounting direction of the switch 2. As described above, the switch 2 is housed as a microswitch inside the electronic device such as the operating device 1 and receives a pressing operation received by a part such as the pressing operation unit 10 of the operating device 1 as an external pressing.
　スイッチ２は、略直方体状をなす筐体２０を備えている。筐体２０は、下部のベース２０ａ及び上部のカバー２０ｂにて形成されている。筐体２０の上面には、正面視で中央から左寄りの位置に、押圧部材２１が挿通される長方形状の挿通孔２００が開設されている。挿通孔２００に挿通されている押圧部材２１は、筐体２０の外部からの押圧を受けて上下に移動する部材であり、筐体２０の上面からは、押圧部材２１の上端が突出している。更に、筐体２０の下側からは、他の電気部材を接続可能な金属片である３本の接続端子部２２が突出している。 The switch 2 includes a substantially rectangular parallelepiped housing 20. The housing 20 is formed by a lower base 20a and an upper cover 20b. A rectangular insertion hole 200 through which the pressing member 21 is inserted is formed on the upper surface of the housing 20 at a position on the left side from the center when viewed from the front. The pressing member 21 inserted into the insertion hole 200 is a member that moves up and down by being pressed from the outside of the housing 20, and the upper end of the pressing member 21 protrudes from the upper surface of the housing 20. Further, from the lower side of the housing 20, three connection terminal portions 22, which are metal pieces to which other electric members can be connected, protrude.
　このように形成されたスイッチ２では、操作装置１が受け付けた外部からの押下操作が、筐体２０の外部からの押圧として押圧部材２１に伝達される。押圧部材２１は、外部からの押圧を受けて下方へ移動し、外部からの押圧が解除されると上方へ移動する。 In the switch 2 formed as described above, the pressing operation from the outside received by the operating device 1 is transmitted to the pressing member 21 as the pressing from the outside of the housing 20. The pressing member 21 moves downward in response to an external pressure, and moves upward when the external pressure is released.
　次にスイッチ２の内部構造について説明する。図３は、本願記載のスイッチ２の一例を示す概略分解斜視図である。図４は、本願記載のスイッチ２の断面の一例を示す概略断面図である。図４は、図２に示すＡ－Ｂ線分を含む垂直面で切断した断面を矢印方向に向かって示している。 Next, the internal structure of the switch 2 will be described. FIG. 3 is a schematic exploded perspective view showing an example of the switch 2 described in the present application. FIG. 4 is a schematic sectional view showing an example of a section of the switch 2 described in the present application. FIG. 4 shows a cross section cut along a vertical plane including the line AB shown in FIG. 2 in the direction of the arrow.
　スイッチ２の筐体２０内には、電気回路を開閉する接点機構を収容する接点室としての領域が確保されている。接点室の上面には、筐体２０の外側から貫通する挿通孔２００が開設されており、挿通孔２００には、押圧部材２１が挿通されている。 (4) An area as a contact chamber for accommodating a contact mechanism for opening and closing an electric circuit is secured in the housing 20 of the switch 2. An insertion hole 200 penetrating from the outside of the housing 20 is formed on the upper surface of the contact chamber, and the pressing member 21 is inserted into the insertion hole 200.
　接点室内に収容された接点機構について説明する。接点室内には、接点機構として、共通接点端子２３、第１接点端子２４、第２接点端子２５、可動接触片２６等の部材が配設されている。共通接点端子２３は、接点室内の左側に配設されており、左側の接続端子部２２と電気的に接続されている。第１接点端子２４は、接点室内の右上側に配設されており、右側の接続端子部２２と電気的に接続されている。第２接点端子２５は、接点室内の右下側に配設されており、中央の接続端子部２２と電気的に接続されている。 接点 The contact mechanism accommodated in the contact chamber will be described. In the contact chamber, members such as a common contact terminal 23, a first contact terminal 24, a second contact terminal 25, and a movable contact piece 26 are provided as a contact mechanism. The common contact terminal 23 is disposed on the left side in the contact chamber, and is electrically connected to the connection terminal portion 22 on the left side. The first contact terminal 24 is disposed on the upper right side in the contact chamber, and is electrically connected to the right connection terminal portion 22. The second contact terminal 25 is disposed on the lower right side in the contact chamber, and is electrically connected to the central connection terminal portion 22.
　可動接触片２６は、接点室内において、左右方向に延びる板状の導電性金属部材である。可動接触片２６の左端側は、共通接点端子２３に係止され揺動支点２６０として機能する固定端となっている。可動接触片２６の右端側は、第１接点端子２４及び第２接点端子２５の間で移動する自由端であり、可動接点２６１となっている。なお、可動接触片２６には、中央付近が打ち抜かれ円弧状に折り曲げられた復帰バネとして機能する付勢部２６２が形成されており、付勢部２６２の先端は、接点室内の中央近傍に形成された係止板２７に係止されている。付勢部２６２は、押圧部材２１の押圧に抗する反力を生じさせる。 The movable contact piece 26 is a plate-shaped conductive metal member extending in the left-right direction in the contact chamber. The left end side of the movable contact piece 26 is a fixed end that is locked to the common contact terminal 23 and functions as a swing fulcrum 260. The right end side of the movable contact piece 26 is a free end that moves between the first contact terminal 24 and the second contact terminal 25, and is a movable contact 261. The movable contact piece 26 is formed with an urging portion 262 that functions as a return spring whose center is punched out and bent in an arc shape, and a tip of the urging portion 262 is formed near the center in the contact chamber. The locking plate 27 is locked. The urging portion 262 generates a reaction force against the pressing of the pressing member 21.
　第１接点端子２４の上方には、弾性材料を用いて形成された接点用緩衝部材２８が配設されている。接点用緩衝部材２８は、第１接点端子２４に対して上方から接している。また、可動接触片２６の付勢部２６２の下方には、弾性材料を用いて形成された付勢部用緩衝部材２９が配設されている。付勢部用緩衝部材２９は、付勢部２６２に対して下方から接している。 接点 Above the first contact terminal 24, a contact buffer member 28 made of an elastic material is provided. The contact buffer member 28 is in contact with the first contact terminal 24 from above. In addition, below the urging portion 262 of the movable contact piece 26, an urging portion buffer member 29 formed of an elastic material is disposed. The urging portion buffer member 29 is in contact with the urging portion 262 from below.
　このように構成された接点機構は、押圧部材２１が外部からの押圧を受けて下方へ移動し、可動接触片２６を押下する。可動接触片２６が押下されることにより、可動接触片２６の自由端である右端側が下がり、可動接点２６１が第２接点端子２５に接触する。これにより、共通接点端子２３に接続された左側の接続端子部２２と、第２接点端子２５に接続された中央の接続端子部２２とが導通状態となる。 接点 In the contact mechanism configured as described above, the pressing member 21 receives an external pressure and moves downward to press the movable contact piece 26. When the movable contact piece 26 is pressed down, the right end, which is the free end of the movable contact piece 26, is lowered, and the movable contact 261 contacts the second contact terminal 25. As a result, the left connection terminal portion 22 connected to the common contact terminal 23 and the center connection terminal portion 22 connected to the second contact terminal 25 are brought into conduction.
　押圧部材２１の押圧が解除されると、付勢部２６２の反力により可動接触片２６は上方へ付勢される。可動接触片２６が上方へ付勢されることにより、押圧部材２１が上方へ移動する。また、付勢部２６２により可動接触片２６が上方へ付勢されることにより、可動接触片２６の右端側に位置する可動接点２６１が上がり、接点用緩衝部材２８に接触する。なお、可動接触片２６の可動接点２６１が上がった場合、可動接点２６１は、接点用緩衝部材２８が覆う第１接点端子２４と接触するようにしてもよい。この場合、可動接触片２６は、接点用緩衝部材２８に間接的に当接することになる。 When the pressing of the pressing member 21 is released, the movable contact piece 26 is urged upward by the reaction force of the urging portion 262. When the movable contact piece 26 is urged upward, the pressing member 21 moves upward. Further, when the movable contact piece 26 is urged upward by the urging portion 262, the movable contact 261 located on the right end side of the movable contact piece 26 rises and comes into contact with the contact buffer member 28. When the movable contact 261 of the movable contact piece 26 is raised, the movable contact 261 may be brought into contact with the first contact terminal 24 covered by the contact buffer member 28. In this case, the movable contact piece 26 comes into indirect contact with the contact buffer member 28.
　押圧部材２１、可動接触片２６、並びに接点用緩衝部材２８及び付勢部用緩衝部材２９の形状について更に説明する。図５Ａ及び図５Ｂは、本願記載のスイッチ２が備える押圧部材２１の一例を示す概略外観図である。図５Ａは、概略正面図であり、図５Ｂは、斜め下からの視点で示す概略斜視図である。押圧部材２１は、上部側の被押圧突起２１０と、下部側の押圧板２１１とにより構成されている。押圧部材２１の被押圧突起２１０は、略直方体状をなし、上端が正面視半円形状の曲面として形成されている。被押圧突起２１０は、上部が筐体２０の挿通孔２００から突出し、外部からの押圧を受け付ける。押圧板２１１は、平面視略長方形状をなしており、可動接触片２６に対向する下面は、略平面状に形成されている。押圧板２１１の下面の左端は、テーパー状に上方へ傾斜するように形成されており、平面部分とテーパー部分との境界となる第１稜線２１１ａは、前後に直線状に延びている。押圧板２１１の下面の右端側の第２稜線２１１ｂにおいて、可動接触片２６と接する部位は、前端及び後端の若干右方向へ突出した部位である。押圧部材２１は、可動接触片２６を押圧する過程において、少なくとも第１稜線２１１ａ及び第２稜線２１１ｂを含む複数箇所で可動接触片２６に接する。 The shapes of the pressing member 21, the movable contact piece 26, the contact buffer member 28, and the urging portion buffer member 29 will be further described. 5A and 5B are schematic external views illustrating an example of the pressing member 21 included in the switch 2 described in the present application. FIG. 5A is a schematic front view, and FIG. 5B is a schematic perspective view viewed from obliquely below. The pressing member 21 includes an upper pressed protrusion 210 and a lower pressing plate 211. The pressed protrusion 210 of the pressing member 21 has a substantially rectangular parallelepiped shape, and an upper end is formed as a curved surface having a semicircular shape in a front view. The pressed projection 210 has an upper portion protruding from the insertion hole 200 of the housing 20 and receives external pressure. The pressing plate 211 has a substantially rectangular shape in a plan view, and the lower surface facing the movable contact piece 26 is formed in a substantially planar shape. The left end of the lower surface of the pressing plate 211 is formed so as to be inclined upward in a tapered shape, and a first ridgeline 211a serving as a boundary between the flat portion and the tapered portion extends linearly forward and backward. In the second ridgeline 211b on the right end side of the lower surface of the pressing plate 211, the portion that comes into contact with the movable contact piece 26 is a portion that slightly projects rightward at the front end and the rear end. In the process of pressing the movable contact piece 26, the pressing member 21 contacts the movable contact piece 26 at a plurality of locations including at least the first ridgeline 211a and the second ridgeline 211b.
　図６Ａ及び図６Ｂは、本願記載のスイッチ２が備える可動接触片２６の一例を示す概略外観図である。図６Ａは、概略平面図であり、図６Ｂは、斜め下からの視点で示す概略斜視図である。可動接触片２６は、薄い金属板から形成された可撓性を有する部材である。可動接触片２６は、平面視略長方形状をなし、自由端となる右端部側は可動接点２６１として形成されており、可動接点２６１の下面側に接点突起２６１ａが突設されている。接点突起２６１ａは、右端部から左側へ延びるように打ち抜かれた弾性片２６１ｂの下面側に突設されている。弾性片２６１ｂは、略長方形状をなし、右側の一辺が可動接触片２６の左端部と連続しており、連続している部位を支点として揺動するため、弾性を有する弾性形状となっている。弾性片２６１ｂの左側には、前述の付勢部２６２が形成されている。付勢部２６２は、右側から左側へ帯状に延びるように打ち抜かれた部分を、復帰バネとして機能するように下方が凸の円弧状に折り曲げて形成されている。付勢部２６２の先端は、筐体２０のベース２０ａに突設された係止板２７に係止される係止部２６２ａとなっており、付勢部２６２は、係止板２７に係止された係止部２６２ａを揺動軸として右側となる可動接点２６１部側が揺動する。 6A and 6B are schematic external views showing an example of the movable contact piece 26 included in the switch 2 described in the present application. FIG. 6A is a schematic plan view, and FIG. 6B is a schematic perspective view as viewed obliquely from below. The movable contact piece 26 is a flexible member formed of a thin metal plate. The movable contact piece 26 has a substantially rectangular shape in a plan view, and the right end, which is a free end, is formed as a movable contact 261, and a contact projection 261 a is provided on the lower surface of the movable contact 261. The contact protrusion 261a is provided on the lower surface side of the elastic piece 261b punched out so as to extend from the right end to the left. The elastic piece 261b has a substantially rectangular shape, and one side on the right side is continuous with the left end of the movable contact piece 26. Since the elastic piece 261b swings around the continuous part as a fulcrum, it has an elastic shape having elasticity. . The aforementioned urging portion 262 is formed on the left side of the elastic piece 261b. The biasing portion 262 is formed by bending a portion punched out so as to extend in a belt shape from the right side to the left side so as to function as a return spring into an arc shape with a downward convex. The tip of the urging portion 262 is a locking portion 262a that is locked by a locking plate 27 protruding from the base 20a of the housing 20, and the pressing portion 262 is locked by the locking plate 27. The movable contact 261 on the right side swings with the locked portion 262a as the swing axis.
　図７Ａ及び図７Ｂは、本願記載のスイッチ２が備える緩衝部材の一例を示す概略斜視図である。図７Ａは、接点用緩衝部材２８を示している。接点用緩衝部材２８は、ポリウレタンゴム等の弾性材料を成型した部材であり、上部部材２８０及び下部部材２８１を組み合わせて形成されている。上部部材２８０は、略直方体状をなし、筐体２０の内壁面に接する右端側が下方へ延びて固定されている。固定される部位には第１接点端子２４を嵌合させるための切り込みが形成されている。上部部材２８０の左端側の下面には、平面視Ｕ字形状をなす下部部材２８１が貼り付けられている。上部部材２８０及び下部部材２８１にて形成される接点用緩衝部材２８は、第１接点端子２４を覆っており、可動接触片２６の自由端となる可動接点２６１は、直接又は第１接点端子２４を介して間接的に接点用緩衝部材２８の下部部材２８１に接する。 FIGS. 7A and 7B are schematic perspective views illustrating an example of a buffer member provided in the switch 2 described in the present application. FIG. 7A shows the contact buffer member 28. The contact cushioning member 28 is a member formed by molding an elastic material such as polyurethane rubber, and is formed by combining the upper member 280 and the lower member 281. The upper member 280 has a substantially rectangular parallelepiped shape, and the right end side in contact with the inner wall surface of the housing 20 extends downward and is fixed. A notch for fitting the first contact terminal 24 is formed in the portion to be fixed. A lower member 281 having a U-shape in plan view is affixed to the lower surface on the left end side of the upper member 280. The contact buffering member 28 formed by the upper member 280 and the lower member 281 covers the first contact terminal 24, and the movable contact 261, which is a free end of the movable contact piece 26, is directly or first contact terminal 24. And indirectly comes into contact with the lower member 281 of the contact buffer member 28 via.
　図７Ｂは、付勢部用緩衝部材２９を示している。付勢部用緩衝部材２９は、ポリウレタンゴム等の弾性材料を成型した部材であり、平面視略長方形状をなす板状体２９０の下面に略直方体状をなす台部２９１が形成された形状をなしており、板状体２９０の奥側には切り欠きが形成され、第２接点端子２５が嵌合するように形成されている。板状体２９０は、左端側の上面で付勢部２６２の下面に当接している。台部２９１は、板状体２９０の右寄りに形成されているため、板状体２９０の左端側は、付勢部２６２の揺動を受けて、図中矢印に示すように撓み、衝撃を吸収する。 FIG. 7B shows the urging portion buffer member 29. The urging portion buffer member 29 is a member formed by molding an elastic material such as polyurethane rubber, and has a shape in which a substantially rectangular parallelepiped base portion 291 is formed on the lower surface of a plate-like body 290 having a substantially rectangular shape in plan view. A notch is formed on the inner side of the plate-shaped body 290 so that the second contact terminal 25 is fitted. The plate-shaped body 290 is in contact with the lower surface of the urging portion 262 on the upper surface on the left end side. Since the base portion 291 is formed on the right side of the plate-like body 290, the left end side of the plate-like body 290 is bent as shown by an arrow in the figure due to the swing of the urging portion 262, and absorbs an impact. I do.
　＜スイッチ２の動作＞
　以上のように構成された本願記載のスイッチ２の動作について説明する。図８乃至図１１は、本願記載のスイッチ２の動作の一例を示す概略断面図である。図８乃至図１１は、図２に示すＡ－Ｂ線分を含む垂直面で切断した断面を正面からの視点で示している。 <Operation of switch 2>
The operation of the switch 2 configured as described above and described in the present application will be described. 8 to 11 are schematic sectional views showing an example of the operation of the switch 2 described in the present application. 8 to 11 show cross sections taken along a vertical plane including the line AB shown in FIG. 2 from a front view.
　図８は、押圧部材２１が外部から押圧を受けていない状態を示している。押圧部材２１の下端は、可動接触片２６の左端が係止された揺動支点２６０と、可動接触片２６の付勢部２６２先端の係止部２６２ａが係止された位置との間の部位に対し、下部の押圧板２１１の下面で可動接触片２６に接している。図８に示す状態において、可動接触片２６は、押圧部材２１の押圧を受ける接触部位及び可動接点２６１の間に位置する付勢部２６２により、押圧部材２１の押圧に抗する反力にて上方へ押し上げられるため、可動接点２６１として形成された自由端側は、接点室内の右上側に配設された接点用緩衝部材２８に接触している。 FIG. 8 shows a state where the pressing member 21 is not pressed from the outside. The lower end of the pressing member 21 is a portion between the swing fulcrum 260 at which the left end of the movable contact piece 26 is locked and the position at which the locking portion 262a at the tip of the urging portion 262 of the movable contact piece 26 is locked. On the other hand, the lower surface of the lower pressing plate 211 is in contact with the movable contact piece 26. In the state shown in FIG. 8, the movable contact piece 26 is moved upward by a reaction force against the pressing of the pressing member 21 by the urging portion 262 located between the contact portion receiving the pressing of the pressing member 21 and the movable contact 261. Therefore, the free end formed as the movable contact 261 is in contact with the contact cushioning member 28 disposed on the upper right side in the contact chamber.
　図９は、図８に示す状態から、押圧部材２１が外部からの押圧を受けて下方へ移動した状態を示している。押圧部材２１が下方へ移動することにより、押圧部材２１の下部に位置する押圧板２１１が可動接触片２６を下方へ押圧する。押圧部材２１は、可動接触片２６に対し、押圧板２１１の第１稜線２１１ａ及び第２稜線２１１ｂの２点で可動接触片２６に接する。可動接触片２６全体は、押圧部材２１に押圧され、揺動支点２６０を揺動軸として、下方へ移動しようとする。しかしながら、可動接触片２６は、押圧部材２１の押圧を受ける接触部位及び可動接点２６１の間に位置する付勢部２６２により、押圧部材２１の押圧に抗する反力にて上方へ押し上げられるため、可動接点２６１は、接点室内の右上側に配設された接点用緩衝部材２８に接触した状態を維持する。従って、可動接触片２６は、押圧部材２１からの押圧を受け、下方へ屈曲し、撓んだ状態となる。 FIG. 9 shows a state in which the pressing member 21 has been moved downward by receiving an external pressure from the state shown in FIG. When the pressing member 21 moves downward, the pressing plate 211 located below the pressing member 21 presses the movable contact piece 26 downward. The pressing member 21 comes into contact with the movable contact piece 26 at two points of the first ridge line 211a and the second ridge line 211b of the pressing plate 211. The entire movable contact piece 26 is pressed by the pressing member 21 and tends to move downward with the swing fulcrum 260 as the swing axis. However, the movable contact piece 26 is pushed upward by a reaction force against the pressing of the pressing member 21 by the urging portion 262 located between the contact portion receiving the pressing of the pressing member 21 and the movable contact 261. The movable contact 261 maintains a state of being in contact with the contact buffer member 28 disposed on the upper right side in the contact chamber. Therefore, the movable contact piece 26 receives the pressure from the pressing member 21 and bends downward to be bent.
　図１０は、図９に示す状態から、押圧部材２１が外部から更なる押圧を受けて下方へ移動した状態を示している。押圧部材２１が更に下方へ移動することにより、可動接触片２６全体は、押圧部材２１に押圧され、揺動支点２６０を揺動軸として、下方へ移動しようとする。そして、可動接触片２６の付勢部２６２が、係止板２７に係止されている係止部２６２ａを揺動軸として下方へ揺動するため、可動接触片２６全体は、反転するように、揺動支点２６０を揺動軸として揺動する。従って、可動接点２６１の接点突起２６１ａは、接点室内の右下側に固定接点として配設された第２接点端子２５に接触する。これにより、共通接点端子２３に接続された左側の接続端子部２２と、第２接点端子２５に接続された中央の接続端子部２２が導通状態となる。 FIG. 10 shows a state in which the pressing member 21 has been moved downward by receiving further pressing from the outside from the state shown in FIG. When the pressing member 21 moves further downward, the entire movable contact piece 26 is pressed by the pressing member 21 and attempts to move downward with the swing fulcrum 260 as the swing axis. Since the urging portion 262 of the movable contact piece 26 swings downward about the locking portion 262a locked on the locking plate 27 as a swing axis, the entire movable contact piece 26 is inverted. Oscillate with the fulcrum 260 as the oscillating axis. Therefore, the contact protrusion 261a of the movable contact 261 contacts the second contact terminal 25 provided as a fixed contact on the lower right side in the contact chamber. As a result, the left connection terminal portion 22 connected to the common contact terminal 23 and the center connection terminal portion 22 connected to the second contact terminal 25 become conductive.
　可動接点２６１の接点突起２６１ａは、可動接触片２６の反転の勢いで第２接点端子２５に衝突するため衝撃を伴う。しかしながら、第２接点端子２５が嵌合している付勢部用緩衝部材２９の板状体２９０の左端側は、図７Ｂに矢印で示したように撓むため、可動接触片２６の可動接点２６１が第２接点端子２５に衝突した場合の衝撃及び付勢部２６２の揺動時に発生する衝撃を吸収する。そして、可動接触片２６の可動接点２６１が第２接点端子２５に衝突した場合の衝撃を緩和することにより、衝突による音の発生が抑制される。更に、可動接点２６１の接点突起２６１ａは、弾性形状の弾性片２６１ｂに形成されているので、第２接点端子２５との衝撃が緩和され、その際に発生する音が抑制される。 接点 The contact protrusion 261a of the movable contact 261 collides with the second contact terminal 25 with the reversing momentum of the movable contact piece 26, and thus involves an impact. However, since the left end side of the plate-like body 290 of the urging portion buffer member 29 into which the second contact terminal 25 is fitted is bent as shown by the arrow in FIG. 7B, the movable contact of the movable contact piece 26 261 absorbs the impact when it collides with the second contact terminal 25 and the impact generated when the urging portion 262 swings. Then, by alleviating the impact when the movable contact 261 of the movable contact piece 26 collides with the second contact terminal 25, generation of sound due to the collision is suppressed. Further, since the contact protrusion 261a of the movable contact 261 is formed on the elastic piece 261b having an elastic shape, the impact with the second contact terminal 25 is reduced, and the sound generated at that time is suppressed.
　図１１は、図１０に示す状態から、押圧部材２１が外部から更なる押圧を受けて可動域の最下点まで移動した状態を示している。押圧部材２１が最下点まで移動することにより、可動接触片２６全体は、押圧部材２１に押圧され、揺動支点２６０を揺動軸として下方へ移動しようとする。従って、可動接触片２６は、両端の揺動支点２６０及び可動接点２６１に支えられて下方へ撓むように屈曲する。ただし、導通状態に変化はない。 FIG. 11 shows a state in which the pressing member 21 has been further pressed from the outside and moved to the lowest point of the movable range from the state shown in FIG. When the pressing member 21 moves to the lowest point, the entire movable contact piece 26 is pressed by the pressing member 21 and tends to move downward with the swing fulcrum 260 as the swing axis. Accordingly, the movable contact piece 26 is bent so as to be bent downward while being supported by the swing fulcrum 260 and the movable contact 261 at both ends. However, there is no change in the conduction state.
　押圧部材２１の押圧が解除されると、付勢部２６２の反力により可動接触片２６は上方へ付勢される。可動接触片２６が上方へ付勢されることにより、押圧部材２１が上方へ移動する。また、付勢部２６２により可動接触片２６が上方へ付勢されることにより、可動接触片２６の自由端である可動接点２６１が上がり、接点用緩衝部材２８に接触する。即ち、図８に例示した状態となる。可動接触片２６は、押圧部材２１の押圧が解除されて上昇する際、接点用緩衝部材２８と衝突する。衝突による衝撃は、接点用緩衝部材２８に吸収される。なお、可動接触片２６が、接点用緩衝部材２８に覆われた第１接点端子２４と衝突するように設計されていた場合であっても、可動接触片２６の衝突による衝撃は、接点用緩衝部材２８に吸収される。即ち、可動接触片２６は、接点用緩衝部材２８と、直接又は第１接点端子２４を介して間接的に当たることになるので、接点用緩衝部材２８は、衝突時の衝撃を緩和し、衝突による音の発生を抑制する。 When the pressing of the pressing member 21 is released, the movable contact piece 26 is urged upward by the reaction force of the urging portion 262. When the movable contact piece 26 is urged upward, the pressing member 21 moves upward. When the movable contact piece 26 is urged upward by the urging portion 262, the movable contact 261, which is a free end of the movable contact piece 26, rises and comes into contact with the contact buffer member 28. That is, the state illustrated in FIG. 8 is obtained. The movable contact piece 26 collides with the contact cushioning member 28 when the pressing of the pressing member 21 is released and the movable contact piece 26 rises. The impact due to the collision is absorbed by the contact buffer member 28. Even if the movable contact piece 26 is designed to collide with the first contact terminal 24 covered by the contact buffer member 28, the impact due to the collision of the movable contact piece 26 does not affect the contact buffer. It is absorbed by the member 28. That is, since the movable contact piece 26 directly or indirectly comes into contact with the contact buffer member 28 via the first contact terminal 24, the contact buffer member 28 reduces the impact at the time of collision, and Suppress the generation of sound.
　以上のように、本願記載のスイッチ２は、接点用緩衝部材２８及び付勢部用緩衝部材２９並びに可動接点２６１の接点時が突設された弾性片２６１ｂの弾性形状により、各種部材の衝突時の衝撃を緩和し、衝突による音の発生を抑制する静音効果等の優れた効果を奏する。 As described above, the switch 2 described in the present application is provided with the contact cushioning member 28, the urging portion cushioning member 29, and the elastic shape of the elastic piece 261b protruding from the contact point of the movable contact 261 at the time of collision of various members. And excellent effects such as a silent effect of suppressing generation of sound due to collision.
　次に、本願記載のスイッチ２が備える押圧部材２１の形状に基づく静音効果について説明する。図１２Ａは、本願記載のスイッチ２が備える押圧部材２１及び可動接触片２６に関する力学系モデルの一例を模式的に示す説明図である。図１２Ｂは、比較用の図であり、従来型のスイッチ２ｘが備える押圧部材２１ｘ及び可動接触片２６ｘに関する力学系モデルの一例を模式的に示す説明図である。図１２Ａ及び図１２Ｂは、押圧部材２１，２１ｘ及び可動接触片２６，２６ｘを正面からの視点で示している。図１２Ａ及び図１２Ｂにおいて、一点鎖線は、外部からの押圧を受けて可動接触片２６，２６ｘを押圧する力の中心を示しており、矢印は、押圧部材２１，２１ｘが可動接触片２６，２６ｘに加える力を示している。 Next, the silent effect based on the shape of the pressing member 21 included in the switch 2 described in the present application will be described. FIG. 12A is an explanatory diagram schematically illustrating an example of a dynamic system model regarding the pressing member 21 and the movable contact piece 26 included in the switch 2 described in the present application. FIG. 12B is a diagram for comparison, and is an explanatory diagram schematically illustrating an example of a dynamic system model related to the pressing member 21x and the movable contact piece 26x included in the conventional switch 2x. 12A and 12B show the pressing members 21 and 21x and the movable contact pieces 26 and 26x from a front view. 12A and 12B, the dashed line indicates the center of the force that presses the movable contact pieces 26 and 26x in response to external pressure, and the arrows indicate that the pressing members 21 and 21x move the movable contact pieces 26 and 26x. Shows the force applied to
　図１２Ａに例示するように、本願記載のスイッチ２が備える押圧部材２１の下部に形成された押圧板２１１の下面は、略平面状に形成されている。可動接触片２６は、押圧部材２１に押圧されて撓み、下方へ向けて屈曲するため、押圧部材２１は、第１稜線２１１ａ及び第２稜線２１１ｂの２カ所の接触部位で可動接触片２６に接する。即ち、押圧部材２１は、外部からの押圧を受けて可動接触片２６を押圧する力の中心に対し、揺動支点２６０側となる第１稜線２１１ａ側及び可動接点２６１側となる第２稜線２１１ｂ側を接触部位として有している。そして、押圧部材２１は、図中矢印で示すように２カ所の接触部位で可動接触片２６を押圧する。なお、図１２Ｂに比較用に示した従来型のスイッチ２ｘでは、押圧部材２１ｘの下部は下に凸となる円弧状に形成されており、押圧部材２１ｘは、押圧する力の中心と略一致する１カ所の接触部位で可動接触片２６ｘに接し、図中矢印で示すように１カ所の接触部位で可動接触片２６ｘを押圧する。 As illustrated in FIG. 12A, the lower surface of the pressing plate 211 formed below the pressing member 21 included in the switch 2 described in the present application is formed in a substantially planar shape. Since the movable contact piece 26 is pressed by the pressing member 21 to bend and bend downward, the pressing member 21 comes into contact with the movable contact piece 26 at two contact portions of the first ridge line 211a and the second ridge line 211b. . That is, the pressing member 21 receives the external pressure and presses the movable contact piece 26 with respect to the center of the force that presses the movable contact piece 26. The first ridgeline 211a on the swing fulcrum 260 side and the second ridgeline 211b on the movable contact 261 side. Side as a contact site. Then, the pressing member 21 presses the movable contact piece 26 at two contact sites as indicated by arrows in the drawing. In the conventional switch 2x shown in FIG. 12B for comparison, the lower part of the pressing member 21x is formed in an arc shape that protrudes downward, and the pressing member 21x substantially coincides with the center of the pressing force. The movable contact piece 26x is brought into contact with the contact piece 26x at one contact point, and the movable contact piece 26x is pressed at one contact point as shown by the arrow in the figure.
　図１３、図１４Ａ及び図１４Ｂは、従来型のスイッチ２ｘの力学系モデルの一例を模式的に示す説明図である。図１３は、荷重と可動接触片２６ｘとの関係を力学系モデルとして模式的に示す説明図であり、図１４Ａ及び図１４Ｂは、従来型のスイッチ２ｘの押込量及び操作荷重の関係を力学系モデルとして概略的に示すグラフである。図１３は、スイッチ２ｘを垂直面で切断した断面を正面からの視点で示しており、可動接触片２６ｘの動きを断続的に示している。なお、図１３は、従来型のスイッチ２ｘであるため、接点用緩衝部材２８ｘ及び付勢部用緩衝部材２９ｘは記載していない。図１４Ａは、両端支持梁に係る荷重と撓みとの関係を模式的に示しており、図１４Ｂは、反転動作のタイミングを模式的に示している。図１５は、スイッチ２ｘの押圧部材２１ｘが下方へ押し込まれた場合の押圧部材２１ｘの押込量（操作ストローク）を横軸にとり、押し込まれた場合に押圧部材２１ｘが受ける操作荷重を縦軸にとって、その関係を示している。 FIGS. 13, 14A and 14B are explanatory diagrams schematically showing an example of a dynamic system model of a conventional switch 2x. FIG. 13 is an explanatory diagram schematically showing the relationship between the load and the movable contact piece 26x as a dynamic system model. FIGS. 14A and 14B show the relationship between the pushing amount of the conventional switch 2x and the operation load in the dynamic system model. It is a graph shown roughly as a model. FIG. 13 shows a cross section obtained by cutting the switch 2x in a vertical plane from a front view, and shows the movement of the movable contact piece 26x intermittently. FIG. 13 does not show the contact buffer member 28x and the urging portion buffer member 29x because the switch 2x is a conventional switch. FIG. 14A schematically illustrates the relationship between the load and the deflection of the support beam at both ends, and FIG. 14B schematically illustrates the timing of the reversing operation. FIG. 15 is a graph in which the horizontal axis represents the amount of depression (operation stroke) of the pressing member 21x when the pressing member 21x of the switch 2x is pushed downward, and the vertical axis represents the operation load received by the pressing member 21x when pushed. This shows the relationship.
　図１３に示すように、押圧部材２１ｘは、下面が円弧状に形成されているため、押込過程において、１カ所の接触部位で可動接触片２６ｘに接する。図１３、図１４Ａ及び図１４Ｂにおいて、破線の白抜き矢印は、図１３に示した位置Ａで、押圧部材２１ｘが可動接触片２６ｘに接する場合の押圧力を示している。また、図１５において、破線は、図１３に示した位置Ａで、押圧部材２１ｘが可動接触片２６ｘに接する場合の押込量及び操作荷重の関係を示している。図１３、図１４Ａ及び図１４Ｂに示す実線の白抜き矢印並びに図１５に示す実線は、位置Ａより揺動支点２６０ｘ側（図に向かって左側）となる位置Ｂで、押圧部材２１ｘが可動接触片２６ｘに接すると仮定した場合での押圧力及び関係を示している。図１３、図１４Ａ及び図１４Ｂに示す一点鎖線の白抜き矢印並びに図１５に示す一点鎖線は、位置Ａより可動接点２６１ｘ側（図に向かって右側）となる位置Ｃで、押圧部材２１ｘが可動接触片２６ｘに接すると仮定した場合での押圧力及び関係を示している。 As shown in FIG. 13, since the lower surface of the pressing member 21x is formed in an arc shape, the pressing member 21x comes into contact with the movable contact piece 26x at one contact portion in the pressing process. In FIGS. 13, 14A and 14B, the dashed white arrows indicate the pressing force when the pressing member 21x contacts the movable contact piece 26x at the position A shown in FIG. In FIG. 15, the broken line indicates the relationship between the pushing amount and the operating load when the pressing member 21x contacts the movable contact piece 26x at the position A shown in FIG. The solid outline arrows shown in FIGS. 13, 14A, and 14B and the solid line shown in FIG. 15 indicate a position B on the swing fulcrum 260x side (left side in the figure) from the position A, and the pressing member 21x has a movable contact. The pressing force and the relationship when assuming that it touches the piece 26x are shown. The dashed-dotted arrow shown in FIGS. 13, 14A and 14B and the dashed-dotted line shown in FIG. 15 indicate that the pressing member 21x is movable at a position C on the movable contact 261x side (right side in the drawing) from the position A. The pressing force and the relationship when assuming that it contacts the contact piece 26x are shown.
　図１４Ａは、可動接触片２６ｘに係る押圧力と可動接触片２６ｘとの関係を、両端支持梁を想定して示している。両端支持梁を想定した場合、同じ撓みを発生させるのに必要な力は、揺動支点２６０ｘに近い位置Ｂが最も大きく、次いで、位置Ａ、位置Ｃの順に小さくなる。図１４Ｂは、反転動作のタイミングを示しており、揺動支点２６０ｘに近い位置Ｂが最も遅く、次いで、位置Ａ、位置Ｃの順に早くなる。これらの関係から図１５に示すグラフが得られる。図１５において、操作荷重が急激に下がる点が、可動接触片２６ｘが反転する位置となる。図１５に示すように、反転位置は、揺動支点２６０ｘに近い順に荷重が大きく、また、押込量に対する反転動作のタイミングが遅くなる。そして、反転動作の際に、大きな音が発生する。 FIG. 14A shows the relationship between the pressing force on the movable contact piece 26x and the movable contact piece 26x, assuming a support beam at both ends. Assuming a support beam at both ends, the force required to generate the same deflection is greatest at position B near the swing fulcrum 260x, and then decreases in the order of position A and position C. FIG. 14B shows the timing of the reversing operation, in which the position B near the swing fulcrum 260x is the latest, and then the position A and the position C are earlier. From these relationships, a graph shown in FIG. 15 is obtained. In FIG. 15, the point at which the operation load suddenly decreases is the position where the movable contact piece 26x is inverted. As shown in FIG. 15, the load increases in the reverse position in the order closer to the swing fulcrum 260x, and the timing of the reverse operation with respect to the pushing amount is delayed. Then, a loud sound is generated during the inversion operation.
　図１６は、本願記載のスイッチ２の力学系モデルの一例を模式的に示す説明図であり、図１７は、本願記載のスイッチ２の押込量及び操作荷重の関係の一例を力学系モデルとして概略的に示すグラフである。なお、図１６では、可動接触片２６の動きを理解し易いように、接点用緩衝部材２８及び付勢部用緩衝部材２９の記載を省略している。以下では、これらの緩衝部材による静音効果以外の静音効果について説明する。図１６に示すように、本願記載のスイッチ２が備える押圧部材２１は、下面が平面状に形成されているため、押込過程において、２カ所の接触部位で可動接触片２６に接する。図１６中において、破線、実線及び一点鎖線で示した白抜き矢印は、図１３に例示した位置Ａ、位置Ｂ及び位置Ｃに対応する位置で可動接触片２６に接する場合の押圧力を比較のために示している。図１７において、太線は、本願記載のスイッチ２の押込量及び操作荷重の関係を示しており、破線、実線及び一点鎖線は、位置Ａ、位置Ｂ及び位置Ｃにおける押込量及び操作荷重の関係を比較のために示している。 FIG. 16 is an explanatory diagram schematically showing an example of the dynamic system model of the switch 2 described in the present application. FIG. 17 is a schematic diagram showing an example of the relationship between the pushing amount and the operation load of the switch 2 described in the present application as the dynamic system model. It is a graph shown typically. In FIG. 16, illustration of the contact buffer member 28 and the urging portion buffer member 29 is omitted so that the movement of the movable contact piece 26 can be easily understood. Hereinafter, a silent effect other than the silent effect by these buffer members will be described. As shown in FIG. 16, the pressing member 21 included in the switch 2 described in the present application has a planar lower surface, and thus contacts the movable contact piece 26 at two contact sites during the pressing process. In FIG. 16, broken arrows indicated by broken lines, solid lines, and dashed-dotted lines indicate the pressing force when contacting the movable contact piece 26 at positions corresponding to the positions A, B, and C illustrated in FIG. 13. Indicated for. In FIG. 17, the bold line shows the relationship between the pushing amount and the operation load of the switch 2 described in the present application, and the broken line, the solid line, and the one-dot chain line show the relationship between the pushing amount and the operation load at the positions A, B, and C. Shown for comparison.
　本願記載のスイッチ２において、押圧部材２１は、外部からの押圧を受け、第１稜線２１１ａ及び第２稜線２１１ｂにて可動接触片２６に接し、可動接触片２６を押圧する。押圧部材２１に押圧された可動接触片２６は、撓みながらも第１稜線２１１ａ及び第２稜線２１１ｂに接した状態を維持するが、第１稜線２１１ａ及び第２稜線２１１ｂに対する反力及びその比率は、押込量に応じて変化する。従って、押込量及び操作荷重の関係は、位置Ａ、位置Ｂ及び位置Ｃの１カ所の接触部位で押圧した場合のように急激に変化することはなく、図１７に示す太線のように変化する。即ち、可動接触片２６が反転する場合、第１接点端子２４に当接している状態から第２接点端子２５に衝突するまでの切り替わり時間が長くなり、可動接点２６１の接点突起２６１ａが第２接点端子２５に衝突する速度が緩やかになる。接点突起２６１ａの衝突速度が遅くなることにより、衝突時の衝撃が和らぎ、接点突起２６１ａの衝突により発生する音、所謂クリック音が小さくなる静音効果が得られる。 In the switch 2 described in the present application, the pressing member 21 receives a pressing from the outside, comes into contact with the movable contact piece 26 at the first ridge line 211a and the second ridge line 211b, and presses the movable contact piece 26. The movable contact piece 26 pressed by the pressing member 21 maintains the state of being in contact with the first ridge line 211a and the second ridge line 211b while bending, but the reaction force and the ratio thereof to the first ridge line 211a and the second ridge line 211b are , And changes according to the pushing amount. Accordingly, the relationship between the pushing amount and the operation load does not change suddenly as in the case of pressing at one contact portion of the position A, the position B, and the position C, but changes as shown by the thick line in FIG. . That is, when the movable contact piece 26 is inverted, the switching time from the state in which the movable contact piece 26 is in contact with the first contact terminal 24 to the time when the movable contact piece 26 collides with the second contact terminal 25 becomes longer, and the contact protrusion 261a of the movable contact 261 becomes second contact. The speed of the collision with the terminal 25 is reduced. By reducing the collision speed of the contact protrusion 261a, the shock at the time of the collision is alleviated, and a noise generated by the collision of the contact protrusion 261a, that is, a so-called click sound is reduced, so that a silent effect is obtained.
　以上のように、本願記載のスイッチ２は、押圧部材２１が複数箇所で可動接触片２６に接することにより、１カ所で可動接触片２６と接する場合と比べ、音の発生を抑制することが可能である。 As described above, the switch 2 described in the present application can suppress the generation of sound as compared with the case where the pressing member 21 contacts the movable contact piece 26 at a plurality of locations, as compared with the case where the pressing member 21 contacts the movable contact piece 26 at one location. It is.
　なお、押圧部材２１の形状は、上述した形態に限らず、押圧の際に可動接触片２６と複数箇所で接するのであれば、様々な形状に変形することが可能である。図１８Ａ及び図１８Ｂは、本願記載のスイッチ２が備える押圧部材２１の一例を示す概略外観図である。図１８Ａは、概略正面図であり、図１８Ｂは、斜め下からの視点で示す概略斜視図である。図１８Ａ及び図１８Ｂに例示した押圧部材２１は、第１稜線２１１ａ及び第２稜線２１１ｂに相当する部位が下方へ突出し、第１接触突部２１１ｃ及び第２接触突部２１１ｄとなっている。図１８Ａ及び図１８Ｂに例示する押圧部材２１は、第１接触突部２１１ｃ及び第２接触突部２１１ｄで、可動接触片２６に当接し、可動接触片２６を押圧する。従って、図１８Ａ及び図１８Ｂに例示する押圧部材２１とした場合でも、本願記載のスイッチ２は、静音効果を奏する。 The shape of the pressing member 21 is not limited to the above-described embodiment, but may be changed to various shapes as long as the pressing member 21 comes into contact with the movable contact piece 26 at a plurality of locations during pressing. 18A and 18B are schematic external views illustrating an example of the pressing member 21 included in the switch 2 described in the present application. FIG. 18A is a schematic front view, and FIG. 18B is a schematic perspective view as viewed obliquely from below. In the pressing member 21 illustrated in FIGS. 18A and 18B, portions corresponding to the first ridge line 211a and the second ridge line 211b protrude downward, and form a first contact protrusion 211c and a second contact protrusion 211d. The pressing member 21 illustrated in FIGS. 18A and 18B contacts the movable contact piece 26 with the first contact protrusion 211c and the second contact protrusion 211d, and presses the movable contact piece 26. Therefore, even when the pressing member 21 illustrated in FIGS. 18A and 18B is used, the switch 2 described in the present application has a silent effect.
　以上、実施形態を例示して説明したように、本願記載のスイッチ２は、押圧部材２１の形状、可動接触片２６の可動接点２６１近傍の形状等の各種部材の形状、接点用緩衝部材２８、付勢部用緩衝部材２９等の緩衝部材により、可動接触片２６の動作に伴う音の発生を抑制する等、優れた効果を奏する。 As described above, the switch 2 according to the present embodiment includes the shape of the pressing member 21, the shape of various members such as the shape near the movable contact 261 of the movable contact piece 26, the contact buffer member 28, and the like. The cushioning member such as the biasing portion cushioning member 29 provides excellent effects such as suppressing the generation of sound accompanying the operation of the movable contact piece 26.
　本発明は、以上説明したそれぞれの実施形態に限定されるものではなく、他の様々な形態に展開することが可能である。そのため、上述した実施形態はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。本発明の技術範囲は、請求の範囲によって説明するものであって、明細書本文には何ら拘束されない。更に、請求の範囲の均等範囲に属する変形及び変更は、全て本発明の範囲内のものである。 The present invention is not limited to the above-described embodiments, but can be developed in other various forms. Therefore, the above-described embodiment is merely an example in every aspect, and should not be construed as limiting. The technical scope of the present invention is described by the claims, and is not limited by the specification text. Furthermore, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
　例えば、前記実施形態では、第１接点端子２４が嵌合するように形成された接点用緩衝部材２８の例を示したが、本発明はこれに限らず、第１接点端子２４を無くし、緩衝部材のみを形成する等、様々な形態に展開することが可能である。 For example, in the above-described embodiment, the example of the contact buffer member 28 formed so that the first contact terminal 24 is fitted is shown. However, the present invention is not limited to this. It can be developed in various forms such as forming only members.
　また、前記実施形態では、スイッチ２を備える操作装置１として、マウスを例示したが、本発明はこれに限らず、操作に用いられるキーボード、各種押しボタン等の様々な装置を操作装置１として適用することが可能である等、様々な形態に展開することが可能である。 In the above-described embodiment, a mouse is exemplified as the operation device 1 including the switch 2. However, the present invention is not limited to this, and various devices such as a keyboard and various push buttons used for operation are applied as the operation device 1. Can be developed in various forms.
　１　　　　操作装置
　２　　　　スイッチ
　２０　　　筐体
　２１　　　押圧部材
　２１１　　押圧板
　２１１ａ　　第１稜線
　２１１ｂ　　第２稜線
　２２　　　接続端子部
　２３　　　共通接点端子
　２４　　　第１接点端子
　２５　　　第２接点端子（固定接点）
　２６　　　可動接触片
　２６０　　揺動支点
　２６１　　可動接点
　２６１ａ　接点突起
　２６１ｂ　弾性片
　２６２　　付勢部
　２６２ａ　　係止部
　２８　　　接点用緩衝部材
　２９　　　付勢部用緩衝部材 Reference Signs List 1 operating device 2 switch 20 housing 21 pressing member 211 pressing plate 211a first ridge line 211b second ridge line 22 connection terminal portion 23 common contact terminal 24 first contact terminal 25 second contact terminal (fixed contact)
26 Movable contact piece 260 Oscillating fulcrum 261 Movable contact 261a Contact projection 261b Elastic piece 262 Energizing part 262a Engaging part 28 Contact buffer member 29 Buffer member for urging part

Claims (7)

  1. 　固定接点と、可撓性を有し、一端側が揺動支点、他端側が可動接点となる可動接触片と、外部からの押圧を受けて、前記可動接触片の揺動支点及び可動接点の間を押圧する押圧部材とを備え、前記可動接触片は、前記押圧部材に押圧されて揺動し、前記可動接点が前記固定接点と接触するスイッチであって、
    　前記可動接触片に当接するように配設された緩衝部材を備える
    　ことを特徴とするスイッチ。     A fixed contact, a movable contact piece having flexibility, one end side of which is a swing fulcrum, and the other end side of which is a movable contact; A contact member that presses the movable contact piece, the movable contact piece is swung by being pushed by the pressing member, and the movable contact is a switch that contacts the fixed contact,
    A switch comprising: a shock-absorbing member disposed so as to contact the movable contact piece.
  2. 　請求項１に記載のスイッチであって、
    　前記可動接触片は、前記押圧部材の押圧を受ける接触部位及び前記可動接点の間に、前記押圧部材の押圧に抗する反力を生じさせる付勢部が形成されており、
    　前記緩衝部材は、前記可動接触片に形成された付勢部に当接するように配設された付勢部用緩衝部材である
    　ことを特徴とするスイッチ。     The switch according to claim 1, wherein
    The movable contact piece, between the contact portion receiving the pressing of the pressing member and the movable contact, an urging portion that generates a reaction force against the pressing of the pressing member is formed,
    The switch, wherein the buffering member is a buffering member for an urging portion provided to contact an urging portion formed on the movable contact piece.
  3. 　請求項２に記載のスイッチであって、
    　前記可動接触片は、前記押圧部材の押圧を受けて撓み、更なる押圧を受けて、前記付勢部が係止された係止部を揺動軸として前記可動接点側が揺動することにより、前記固定接点と接触するように形成されている
    　ことを特徴とするスイッチ。     The switch according to claim 2, wherein
    The movable contact piece is bent by receiving the pressing of the pressing member, and further receives the pressing, whereby the movable contact side swings around the locking portion where the urging portion is locked as a swing axis, A switch formed to be in contact with the fixed contact.
  4. 　請求項１乃至請求項３のいずれか１項に記載のスイッチであって、
    　前記押圧部材が外部から押圧されていない場合に、前記可動接触片の他端側が当接するように配設された接点用緩衝部材を備える
    　ことを特徴とするスイッチ。     The switch according to any one of claims 1 to 3, wherein
    A switch comprising: a contact buffer member disposed so that the other end of the movable contact piece abuts when the pressing member is not pressed from the outside.
  5. 　請求項１乃至請求項４のいずれか１項に記載のスイッチであって、
    　前記可動接触片の可動接点は、他端部に弾性形状で形成されている
    　ことを特徴とするスイッチ。     The switch according to any one of claims 1 to 4, wherein
    A switch, wherein the movable contact of the movable contact piece is formed in an elastic shape at the other end.
  6. 　請求項１乃至請求項５のいずれか１項に記載のスイッチであって、
    　前記押圧部材は、前記可動接触片に複数の接触部位で接触して、前記可動接触片を押圧する
    　ことを特徴とするスイッチ。     The switch according to any one of claims 1 to 5, wherein
    The switch, wherein the pressing member contacts the movable contact piece at a plurality of contact sites to press the movable contact piece.
  7. 　外部からの押下操作を受け付ける押下操作部と、
    　前記押下操作部が受け付けた押下操作を外部からの押圧として伝達される請求項１乃至請求項６のいずれか１項に記載のスイッチと
    　を備え、
    　前記スイッチが備える前記可動接点の動作に基づく信号を出力する
    　ことを特徴とする操作装置。     A pressing operation unit that receives a pressing operation from the outside,
    The switch according to any one of claims 1 to 6, wherein the pressing operation received by the pressing operation unit is transmitted as external pressing.
    An operating device, which outputs a signal based on an operation of the movable contact included in the switch.
PCT/JP2019/030625 2018-08-30 2019-08-05 Switch and operating device WO2020044963A1 (en)

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WO2017018097A1 (en) * 2015-07-24 2017-02-02 信越ポリマー株式会社 Push-button switch member
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JPS5820433U (en) * 1981-07-31 1983-02-08 アルプス電気株式会社 push button switch
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WO2017018097A1 (en) * 2015-07-24 2017-02-02 信越ポリマー株式会社 Push-button switch member
WO2017056601A1 (en) * 2015-09-30 2017-04-06 アルプス電気株式会社 Push switch

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