WO2023248701A1 - Interrupteur à bouton-poussoir - Google Patents

Interrupteur à bouton-poussoir Download PDF

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Publication number
WO2023248701A1
WO2023248701A1 PCT/JP2023/019541 JP2023019541W WO2023248701A1 WO 2023248701 A1 WO2023248701 A1 WO 2023248701A1 JP 2023019541 W JP2023019541 W JP 2023019541W WO 2023248701 A1 WO2023248701 A1 WO 2023248701A1
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WO
WIPO (PCT)
Prior art keywords
pusher
movable contact
push switch
convex portion
contact body
Prior art date
Application number
PCT/JP2023/019541
Other languages
English (en)
Japanese (ja)
Inventor
健一 森尾
高志 金山
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2023248701A1 publication Critical patent/WO2023248701A1/fr

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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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/20—Driving mechanisms
    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch

Definitions

  • the present disclosure generally relates to a push switch, and more particularly, to a push switch including a fixed contact portion and a movable contact portion.
  • the push switch described in Patent Document 1 includes a central contact, an outer contact, a movable contact, a case, a protective sheet, and a pressing body.
  • a center contact and an outer contact are insert-molded and fixed to the inner bottom surface of the case.
  • a protective sheet is placed on the case.
  • a pressing body made of insulating resin is fixed to the lower surface of the protective sheet, and the lower surface of the pressing body is placed on the central vertex of the movable contact.
  • a shock may be applied to such a push switch if it is accidentally dropped.
  • An object of the present disclosure is to provide a push switch with improved impact resistance.
  • a push switch includes a case, a fixed contact body, a movable contact body, a pusher, and an elastic member.
  • the case has a recess that is open at the top.
  • the fixed contact body has a fixed contact portion provided on the bottom surface of the recess.
  • the movable contact body has a movable contact portion facing the fixed contact portion.
  • the movable contact body is provided above the fixed contact body.
  • the pusher is arranged above the movable contact body, receives a downward pushing operation force, and transmits the operation force to the movable contact body.
  • the elastic member is interposed between the pusher and the movable contact body.
  • the elastic modulus of the elastic member is smaller than the elastic modulus of the pusher.
  • the elastic member includes a plate-shaped portion and a first convex portion. The first convex portion projects upward from the plate-like portion and comes into contact with the pusher at least when the operating force is applied to the pusher.
  • FIG. 1 is a sectional view of the push switch according to the first embodiment in a non-operated state.
  • FIG. 2 is a cross-sectional view of the push switch in an operating state.
  • FIG. 3 is a perspective view of the push switch same as above.
  • FIG. 4 is a perspective view of the configuration of a part of the push switch same as above.
  • FIG. 5 is an exploded perspective view of the push switch same as above.
  • FIG. 6 is a perspective view of the elastic member of the push switch same as above.
  • FIG. 7 is a projection view of the outer periphery of the upper surface of the first convex portion projected onto the lower surface of the pusher of the push switch.
  • FIG. 8 is a sectional view of the push switch according to the second embodiment in an operating state.
  • FIG. 9 is a sectional view of the elastic member of the push switch according to the third embodiment.
  • the push switch 1 of this embodiment includes a case 5, a fixed contact body 6, a movable contact body 4, a pusher 3, and an elastic member 8.
  • the case 5 has a recess 50 that is open at the top.
  • the fixed contact body 6 has a fixed contact part 61 provided on the bottom surface 500 of the recessed part 50.
  • the movable contact body 4 has a movable contact part 41 facing the fixed contact part 61.
  • the movable contact body 4 is provided above the fixed contact body 6.
  • the pusher 3 is arranged above the movable contact body 4 and transmits the operating force to the movable contact body 4 upon receiving a downward pushing force.
  • the elastic member 8 is interposed between the pusher 3 and the movable contact body 4.
  • the elastic modulus of the elastic member 8 is smaller than that of the pusher 3.
  • the elastic member 8 has a plate-like portion 83 and a first convex portion 81 .
  • the first convex portion 81 projects upward from the plate-like portion 83 and comes into contact with the pusher 3 at least when an operating force is applied to the pusher 3.
  • the elastic member 8 is interposed between the pusher 3 and the movable contact body 4, so that when an impact is applied to the push switch 1, the elastic member 8 is elastically deformed. can absorb shock. Therefore, the impact resistance of the push switch 1 can be improved. For example, the possibility that the pusher 3 will be plastically deformed can be reduced.
  • the effect of mitigating impact can be improved.
  • the elastic member 8 is locally thick at the location where the first convex portion 81 is provided. Therefore, compared to the case where the elastic member 8 is thick as a whole, the possibility that the operating feeling of the push switch 1 will be impaired can be reduced. In other words, the push switch 1 of this embodiment can provide an operational feeling comparable to that of a push switch that does not include the elastic member 8.
  • the push switch 1 may be used in an orientation in which "up” in the present disclosure means, for example, down, front, back, left, or right.
  • the direction in which the terminals 64 and 74, which will be described later, are lined up is defined as the "left-right direction”
  • the direction perpendicular to both the up-down direction and the left-right direction is defined as the "left-right direction”. This will be explained with reference to the front-back direction.
  • These regulations are also not intended to limit the direction in which the push switch 1 is used.
  • the arrows indicating up and down, left and right in FIGS. 1 and 2 are only shown for explanation and have no substance.
  • the push switch 1 of this embodiment will be described in detail below.
  • the mobile information terminal is, for example, a wearable terminal such as a smart watch or an activity tracker, or a mobile phone such as a smartphone.
  • the push switch 1 is built into the housing of the device, for example, mounted on a printed circuit board.
  • an operation button 10 (see FIG. 1) is arranged as an intermediate member, for example, at a position corresponding to the push switch 1 in the housing.
  • the push switch 1 is indirectly operated via the operation button 10, and the pusher 3 receives the operation force.
  • the configuration of the push switch 1 will be described when the push switch 1 is not operated, that is, when the pusher 3 is not receiving any operating force.
  • the push switch 1 includes a protective sheet 2, a pusher 3, a movable contact body 4, a case 5, a fixed contact body 6, a metal member 7, and an elastic member 8. .
  • the case 5, the fixed contact body 6, and the metal member 7 are integrally molded (insert molded) (see FIG. 4).
  • a push switch 1 is constructed by combining a case 5, a protective sheet 2, a pusher 3, a movable contact body 4, and an elastic member 8.
  • Case 5 The material of the case 5 is, for example, synthetic resin. As shown in FIGS. 1 and 4, the case 5 includes a first pedestal 51, a second pedestal 52, and a case main body 53. Note that FIG. 4 is a diagram in which components of the push switch 1 other than the case 5, fixed contact body 6, and metal member 7 are omitted.
  • the case body 53 When viewed from above, the case body 53 has a rectangular shape.
  • a "rectangle" is a concept that includes a square and a rectangle.
  • the three-dimensional shape of the case body 53 is a rectangular parallelepiped.
  • the length of the case body 53 in the vertical direction is shorter than the length in the front-rear direction and the left-right direction.
  • the case 5 has a recess 50 that is depressed downward from the upper surface 530 of the case body 53.
  • a fixed contact portion 61 is exposed from the bottom surface 500 of the recess 50.
  • the bottom surface 500 is planar.
  • the recess 50 is a space surrounded by a bottom surface 500 and side surfaces 501. That is, the case 5 has a bottom surface 500 of the recess 50 and a side surface 501 of the recess 50.
  • the side surface 501 is provided in an annular shape.
  • the side surface 501 is formed such that the diameter of the recess 50 becomes smaller toward the bottom.
  • the first pedestal portion 51 is provided within the recessed portion 50.
  • the bottom surface 500 of the recess 50 does not include the surface (upper surface 510, etc.) of the first pedestal section 51. That is, the first pedestal portion 51 protrudes upward from the bottom surface 500 of the recessed portion 50. A portion of the fixed contact body 6 is exposed from the bottom surface 500.
  • the first pedestal portion 51 When viewed from above, the first pedestal portion 51 has an annular shape. When viewed from above, the first pedestal portion 51 is formed in a shape along the side surface 501 of the recessed portion 50. More specifically, the first pedestal portion 51 is adjacent to the side surface 501 of the recessed portion 50 and is formed in an annular shape surrounded by the side surface 501. In the first pedestal portion 51, the length in the left-right direction is longer than the length in the front-back direction.
  • the second pedestal portion 52 protrudes upward from the case body 53.
  • the shape of the second pedestal portion 52 is annular when viewed from above.
  • the second pedestal portion 52 is provided at the peripheral edge of the recessed portion 50. In the second pedestal portion 52, the length in the left-right direction is longer than the length in the front-back direction.
  • the material of the fixed contact body 6 is, for example, copper or copper alloy.
  • the fixed contact body 6 is manufactured, for example, from a single sheet metal by punching, bending, and the like. Further, the fixed contact body 6 may be formed by providing a conductive layer containing silver (Ag) plating or the like on the surface of a base material such as copper or copper alloy. As shown in FIGS. 4 and 5, the fixed contact body 6 includes a fixed contact part 61, a surrounding part 62, an extension part 63, a terminal 64, and a terminal 65.
  • the fixed contact portion 61 is exposed on the bottom surface 500 of the recess 50. When viewed from above, the fixed contact portion 61 has a circular shape. A cross-shaped groove is formed on the upper surface 610 of the fixed contact portion 61. Note that the upper surface 610 of the fixed contact portion 61 does not include the bottom surface of this groove. In other words, the upper surface 610 of the fixed contact section 61 refers to the surface that comes into contact with the movable contact section 41.
  • the upper surface 610 of the fixed contact portion 61 is located above the bottom surface 500 of the recess 50. Further, the upper surface 610 is located below the upper surface 510 of the first pedestal section 51.
  • the shape of the surrounding portion 62 is annular when viewed from above.
  • the surrounding part 62 is connected to the fixed contact part 61.
  • the surrounding portion 62 is provided so as to surround the fixed contact portion 61 when viewed from above.
  • the extension part 63 extends to the right from the surrounding part 62. A part of the extension part 63 is embedded in the case 5 and is covered by the case 5. The extension portion 63 is connected to a terminal 64 and a terminal 65.
  • the terminal 64 and the terminal 65 are provided at the right end of the case 5.
  • the terminals 64 and 65 protrude outside the case 5. Further, the terminals 64 and 65 are exposed on the lower surface of the case 5.
  • the material of the metal member 7 is, for example, copper or a copper alloy.
  • the metal member 7 is manufactured, for example, from a single sheet metal by punching, bending, and the like. Further, the metal member 7 may be formed by providing a conductive layer containing silver (Ag) plating or the like on the surface of a base material such as copper or copper alloy. As shown in FIGS. 4 and 5, the metal member 7 includes a main body 70, a first arm 71, a second arm 72, a terminal 74, and a terminal 75.
  • the main body portion 70 is exposed on the upper surface 510 of the first pedestal portion 51.
  • the main body part 70 is provided on the left side of the recessed part 50.
  • the shape of the main body portion 70 is an arcuate shape. In the main body portion 70, the length in the front-rear direction is longer than the length in the left-right direction.
  • the first arm portion 71 and the second arm portion 72 are exposed on the upper surface 510 of the first pedestal portion 51.
  • the first arm portion 71 projects to the right from the rear end of the main body portion 70.
  • the second arm portion 72 projects to the right from the front end of the main body portion 70.
  • the terminal 74 and the terminal 75 are connected to the main body part 70.
  • the terminal 74 and the terminal 75 are provided at the left end of the case 5.
  • the terminals 74 and 75 protrude outside the case 5. Furthermore, the terminals 74 and 75 are exposed on the lower surface of the case 5.
  • the terminals 74, 75, and the terminals 64, 65 of the fixed contact body 6 are mechanically coupled and electrically connected to a conductive member on a printed circuit board, for example, by soldering.
  • Movable contact body As shown in FIGS. 1 and 5, the movable contact body 4 has two leaf springs 40. Each leaf spring 40 has elasticity.
  • the leaf spring 40 is made of, for example, a metal plate such as stainless steel (SUS).
  • SUS stainless steel
  • the movable contact body 4 is constructed by overlapping two leaf springs 40 having substantially the same shape.
  • the movable contact body 4 is a so-called metal dome.
  • leaf springs 40 is not limited to two, and may be one or three or more.
  • the lowest leaf spring 40 includes a portion facing the fixed contact portion 61 on its lower surface. This part corresponds to the movable contact section 41.
  • the movable contact portion 41 is provided at the center of the movable contact body 4 when viewed from below.
  • the movable contact body 4 has electrical conductivity. More specifically, a conductive film having electrical conductivity is formed on the lower surface of the lowest leaf spring 40 by, for example, gold plating or silver plating.
  • the movable contact body 4 is arranged within the recess 50.
  • the movable contact body 4 is provided above the fixed contact body 6.
  • the movable contact body 4 has an oval shape.
  • the length in the left-right direction is longer than the length in the front-back direction.
  • the movable contact body 4 is formed in a shape along the side surface 501 of the recess 50 . More specifically, the movable contact body 4 is surrounded by the side surface 501 of the recess 50 with a slight gap between the movable contact body 4 and the side surface 501, or in contact with the side surface 501.
  • the movable contact body 4 is surrounded by the side surface 501 of the recess 50, thereby restricting movement in a direction perpendicular to the vertical direction.
  • the movable contact body 4 faces the upper surface 510 of the first pedestal portion 51 of the case 5.
  • the movable contact body 4 is supported by a first pedestal portion 51.
  • the right end portion of the movable contact body 4 is in contact with the upper surface 510.
  • the left end portion of the movable contact body 4 is in contact with the main body portion 70 of the metal member 7 exposed from the upper surface 510, and thereby the movable contact body 4 is electrically connected to the metal member 7.
  • the movable contact body 4 When the push switch 1 is not operated, that is, when the pusher 3 is not receiving any operating force, the movable contact body 4 has a shape in which the center portion is convex upward (see FIG. 1). At this time, the movable contact portion 41 is separated from the fixed contact portion 61.
  • the movable contact body 4 When the pusher 3 receives an operating force and the center part of the movable contact body 4 is pushed from above, the movable contact body 4 deforms so that the center part becomes convex downward (see FIG. 2). At this time, the movable contact portion 41 is in contact with the fixed contact portion 61.
  • the protective sheet 2 includes a joint portion 21, a pressing portion 22, and an intermediate portion 23.
  • the protective sheet 2 is a flexible synthetic resin sheet.
  • the protective sheet 2 is joined to the second pedestal part 52 of the case 5 at the joint part 21.
  • the protective sheet 2 covers the entire recess 50. Thereby, the protective sheet 2 keeps the inside of the recess 50 in a sealed state.
  • the joint portion 21 is the peripheral edge of the protective sheet 2.
  • the pressing portion 22 is a circular portion corresponding to the center portion of the protective sheet 2 when viewed from above.
  • the intermediate portion 23 is a portion between the pressing portion 22 and the joining portion 21. The pressing portion 22 projects upward with respect to the intermediate portion 23.
  • the pusher 3 is arranged below the pressing part 22 of the protective sheet 2.
  • the pusher 3 is made of synthetic resin, for example, and has electrical insulation properties.
  • the shape of the pusher 3 is a disk shape that is flat in the vertical direction.
  • the shape of the pusher 3 is not limited to a disk shape, and may be, for example, a funnel shape.
  • the pusher 3 is placed above the elastic member 8 with the lower surface 32 of the pusher 3 in contact with the elastic member 8.
  • the upper surface 31 of the pusher 3 is joined to the pressing portion 22 of the protective sheet 2 by, for example, laser welding.
  • An elastic member 8 is arranged below the pusher 3.
  • a movable contact body 4 is arranged below the elastic member 8 .
  • the pusher 3 transmits the operating force applied to the pressing portion 22 of the protective sheet 2 to the movable contact body 4 via the elastic member 8 .
  • the operating force is a force that pushes the pusher 3 from above.
  • this operating force is transmitted to the movable contact body 4 via the pusher 3 and the elastic member 8. Therefore, when the pressing portion 22 is pressed, the movable contact body 4 is indirectly operated and deformed as shown in FIG. 2 .
  • Elastic member 8 is made of, for example, rubber or elastomer.
  • the elastic modulus of the elastic member 8 is smaller than that of the pusher 3.
  • the elastic member 8 is arranged within the recess 50 .
  • the elastic member 8 includes a first convex portion 81, a second convex portion 82, a plate-like portion 83, and a support portion 84.
  • the planar shape of the plate-like portion 83 is, for example, an ellipse.
  • the thickness direction of the plate-like portion 83 is along the up-down direction. In the plate-shaped portion 83, the length in the left-right direction is longer than the length in the front-back direction.
  • the first convex portion 81 projects upward from the plate-like portion 83 along the thickness direction of the plate-like portion 83.
  • the first convex portion 81 has a cylindrical shape.
  • the second protrusion 82 is provided below the first protrusion 81.
  • the second convex portion 82 projects downward from the plate-like portion 83 along the thickness direction of the plate-like portion 83 .
  • the shape of the second convex portion 82 is a truncated cone.
  • the diameter R3 of the lower end of the second protrusion 82 is smaller than the diameter R2 of the upper end of the second protrusion 82.
  • the first convex portion 81 and the second convex portion 82 are concentric.
  • the diameter R1 of the first convex portion 81 is larger than the diameter R3 of the lower end portion of the second convex portion 82.
  • the diameter R3 of the lower end of the second convex portion 82 is smaller than the diameter R4 of the pusher 3.
  • the diameter R2 of the upper end of the second convex portion 82 is equal to the diameter R1 of the first convex portion 81.
  • “equal” in the present disclosure is not limited to completely equal states, but also includes cases where they are different within a range that does not pose a practical problem. For example, if the difference between two values is within a range of less than 5%, the present disclosure may be applied by regarding them as "equal".
  • the upper surface 810 of the first convex portion 81 is planar.
  • the lower surface 820 of the second convex portion 82 is planar.
  • the area of the lower surface 820 of the second protrusion 82 is smaller than the area of the upper surface 810 of the first protrusion 81 .
  • force is transmitted from the second protrusion 82 of the movable contact body 4 compared to the case where the area of the lower surface 820 of the second protrusion 82 is larger than the area of the upper surface 810 of the first protrusion 81. Misalignment is less likely to occur.
  • FIG. 7 is a diagram in which the outer circumferential line (dotted chain line portion) of the upper surface 810 of the first convex portion 81 is projected onto the lower surface 32 of the pusher 3.
  • the upper surface 810 of the first convex portion 81 fits inside the outer circumferential line 320 of the lower surface 32 of the pusher 3 (see FIG. 1).
  • the outer circumferential line of the upper surface 810 is located inside the outer circumferential line 320 of the lower surface 32 when viewed from the vertical direction. According to this configuration, the possibility that the outer circumferential line 320 of the lower surface 32 of the pusher 3 comes into contact with the upper surface 810 of the first convex portion 81 can be reduced.
  • the possibility that the upper surface 810 of the first convex portion 81 is pressed by the outer circumferential line 320 of the lower surface 32 of the pusher 3 can be reduced.
  • the possibility that the pusher 3 sinks into the upper surface 810 of the first convex portion 81 can be reduced. That is, the possibility that the elastic member 8 will be damaged can be reduced.
  • the upper surface 810 of the first convex portion 81 and the lower surface 32 of the pusher 3 are concentric circles, and the diameter of the upper surface 810 (the diameter R1 of the first convex portion 81) is the diameter of the lower surface 32 (the pusher 3). It is smaller than the diameter R4) of child 3.
  • the shape of the support portion 84 is cylindrical.
  • the support portion 84 has an annular shape when viewed from the top and bottom.
  • the support portion 84 surrounds the second protrusion 82 .
  • the support portion 84 protrudes from the peripheral edge of the plate-like portion 83 along the vertical direction. More specifically, the support portion 84 protrudes downward from the peripheral edge of the plate-like portion 83.
  • the second convex portion 82 protrudes below the lower surface 840 of the support portion 84.
  • the lower surface 820 of the second convex portion 82 is located below the lower surface 840 of the support portion 84 .
  • the amount of protrusion of the second convex portion 82 from the plate-like portion 83 is larger than the amount of protrusion of the first convex portion 81 from the plate-like portion 83.
  • the support portion 84 contacts the side surface 501 of the inner surface of the case 5 along the vertical direction at least when an operating force is applied to the pusher 3.
  • Side surface 501 is a side surface of recess 50 .
  • the support portion 84 is in contact with the side surface 501 of the recess 50 even when no operating force is applied to the pusher 3.
  • the elastic member 8 is elastically deformed so that the portion (center portion) where the first convex portion 81 and the second convex portion 82 are provided is bent downward.
  • the second convex portion 82 comes into contact with the movable contact body 4 at least when an operating force is applied to the pusher 3. More specifically, the second convex portion 82 contacts the center portion of the movable contact body 4 .
  • the elastic member 8 is pushed out toward the side surface 501 of the recess 50, and the support portion 84 is elastically deformed along the shape of the side surface 501. Specifically, as shown in FIG. 2, the lower end portion of the support portion 84 bends toward the second convex portion 82 side (towards the center of the elastic member 8).
  • the elastic member 8 is positioned by the support portion 84 coming into contact with the side surface 501. That is, the support portion 84 comes into contact with the side surface 501, thereby restricting movement of the elastic member 8 in the front-back or left-right direction.
  • the shape of the support portion 84 is annular when viewed from the top and bottom. Therefore, the support portion 84 can position the elastic member 8 over the entire circumference. Thereby, the elastic member 8 can be easily positioned in the case 5. Furthermore, even if the support part 84 is bent, the elastic member 8 is less likely to be displaced, compared to the case where the support part 84 has a cylindrical or prismatic shape, for example.
  • the elastic member 8 is not coupled to the case 5, the pusher 3, and the movable contact body 4. That is, the elastic member 8 is simply accommodated in the space inside the case 5 (the recess 50) and is not fixed. Thereby, the possibility that the elastic deformation of the elastic member 8 is inhibited by the case 5, the pusher 3, and the movable contact body 4 can be reduced. Therefore, the effect of increasing the impact resistance of the push switch 1 by elastically deforming the elastic member 8 can be improved.
  • the support portion 84 protrudes downward rather than upward from the plate-like portion 83, it is possible to reduce the possibility that the support portion 84 will interfere with the protective sheet 2 etc. when operating force is applied to the push switch 1. can.
  • the second convex portion 82 is elastically deformed so as to be pushed and expanded by the operating force. Therefore, concentration of load on the central portion of the movable contact body 4 is suppressed.
  • the movable contact portion 41 and the fixed contact portion 61 constitute a contact portion.
  • the contact portion is switched from off to on.
  • the movable contact portion 41 is separated from the fixed contact portion 61, so that the contact portion is off.
  • the fixed contact body 6 and the metal member 7 are electrically insulated, there is no electrical continuity between the pair of terminals 64 and 65 and the pair of terminals 74 and 75.
  • the movable contact body 4 buckles and deforms vigorously. At this time, the elastic force of the movable contact body 4 changes rapidly.
  • the movable contact body 4 is deformed into a dome shape whose central portion is curved downwardly, as shown in FIG. Therefore, the operator who presses the push switch 1 is given a click feeling as the movable contact body 4 deforms.
  • the movable contact body 4 when the movable contact body 4 is deformed into a downwardly convex dome shape or the like and the operating force acting on the movable contact body 4 disappears, the movable contact body 4 is moved to the center by the restoring force of the movable contact body 4. is restored (deformed) into a curved dome shape so that it is convex upward (see Figure 1).
  • the elastic force of the movable contact body 4 changes rapidly, the movable contact body 4 vigorously restores (deforms) to its original shape (a dome shape with an upwardly convex central portion). Therefore, the operator who presses the push switch 1 is given a sense of moderation (click) as the movable contact body 4 deforms even when the press operation is released.
  • FIG. 8 is a sectional view of the push switch 1A in a state where an operating force is applied.
  • the push switch 1A of this embodiment includes a case 5A having a different shape from the case 5 of the first embodiment.
  • the case 5A includes a case body 53 having a recess 50 and at least one protrusion 54 that protrudes upward from the case body 53.
  • the protruding portion 54 protrudes above the upper surface 810 of the first convex portion 81 .
  • case 5A further includes a first pedestal part 51 and a second pedestal part 52, similarly to the case 5 of the first embodiment.
  • the case 5A has, for example, four protrusions 54, and the four protrusions 54 are provided at the four corners of the case body 53 when viewed from above.
  • the shape of each protrusion 54 is, for example, prismatic. It is preferable that the upper ends of the four protrusions 54 are located on one plane perpendicular to the up-down direction.
  • the movement of the operation button 10 stops when the operation button 10 contacts the plurality of protrusions 54 at the latest. That is, as shown in FIG. 2, when the operation button 10 comes into contact with the plurality of protrusions 54, the operation button 10 cannot move downward any further. Therefore, the possibility that the pusher 3 is pushed too much and excessive force is applied to the pusher 3 can be reduced.
  • protrusions 54 is not limited to four, and may be one, two, three, or five or more.
  • the shape of the protrusion 54 may be, for example, annular or arcuate. If the shape of the protrusion 54 is annular or arcuate when viewed from above, the protrusion 54 can easily receive the operation button 10 even if the number of protrusions 54 is one.
  • Embodiment 3 The push switch 1 according to the third embodiment will be described below with reference to FIG. 9. Components similar to those in Embodiment 1 are designated by the same reference numerals and description thereof will be omitted. Further, this embodiment may be realized in combination with Embodiment 2 as appropriate.
  • the push switch 1 of this embodiment includes an elastic member 8B having a different shape from the elastic member 8 of the first embodiment.
  • the elastic member 8B includes a first protrusion 81, a second protrusion 82, a plate-shaped portion 83, and a support portion 84.
  • the shape of the first convex portion 81 is a truncated cone. More specifically, the diameter of the first convex portion 81 is smaller toward the upper side.
  • the shape of the second convex portion 82 is a downwardly convex dome shape. Therefore, the lower surface 820 of the second convex portion 82 is a downwardly convex curved surface. Since the lower surface 820 has such a shape, the contact area between the second convex portion 82 and the movable contact body 4 becomes relatively small. Therefore, displacement of the position of the movable contact body 4 to which force is transmitted from the second convex portion 82 is less likely to occur. Specifically, in this embodiment, the second convex portion 82 is always in contact with the center portion of the movable contact body 4 and transmits force to the center portion. Thereby, the operating feeling of the push switch 1 can be stabilized.
  • the lower surface 820 is, for example, spherical.
  • the second convex portion 82 does not protrude downward from the lower surface 840 of the support portion 84.
  • the second convex portion 82 may protrude downward from the lower surface 840.
  • the second convex portion 82 does not need to protrude downward from the lower surface 840.
  • the shape of the first convex portion 81 is a truncated cone shape, but similarly to the first embodiment, the shape of the first convex portion 81 may be cylindrical.
  • the first convex portion 81 may have a truncated conical shape as in the present embodiment.
  • the second convex portion 82 may have a cylindrical shape.
  • the elastic member 8 When no operating force is applied to the pusher 3, the elastic member 8 does not need to be in contact with the pusher 3, the movable contact body 4, and the side surface 501 of the recess 50.
  • the push switch 1 may have an operating force applied to it via a plunger, instead of being applied via the operating button 10, or directly from an operator's finger or the like. Good too.
  • the case 5 may have a stand on which the elastic member 8 is placed.
  • the base may protrude from the bottom surface 500 of the recess 50 or from the side surface 501 of the recess 50, for example.
  • the case 5 may have a holding structure that holds (fixes) the elastic member 8.
  • the protective sheet 2 only needs to cover at least a portion of the recess 50, and does not necessarily need to cover the entire recess 50.
  • holes may be formed in a part of the protective sheet 2.
  • the push switch 1 may not include the protective sheet 2.
  • the push switch (1, 1A) includes a case (5, 5A), a fixed contact body (6), a movable contact body (4), a pusher (3), and an elastic member (8). , 8B).
  • the case (5, 5A) has a recess (50) that is open at the top.
  • the fixed contact body (6) has a fixed contact portion (61) provided on the bottom surface (500) of the recess (50).
  • the movable contact body (4) has a movable contact part (41) facing the fixed contact part (61).
  • the movable contact body (4) is provided above the fixed contact body (6).
  • the pusher (3) is arranged above the movable contact body (4), receives an operating force to push downward, and transmits the operating force to the movable contact body (4).
  • the elastic members (8, 8B) are interposed between the pusher (3) and the movable contact body (4).
  • the elastic modulus of the elastic members (8, 8B) is smaller than the elastic modulus of the pusher (3).
  • the elastic member (8, 8B) has a plate-shaped portion (83) and a first convex portion (81).
  • the first convex portion (81) projects upward from the plate-like portion (83) and comes into contact with the pusher (3) at least when an operating force is applied to the pusher (3).
  • the elastic member (8, 8B) elastically deforms and absorbs the impact, so that the push switch (1, 1A) can withstand the impact. Impact resistance can be increased.
  • the elastic member (8, 8B) further includes a second convex portion (82) in the first aspect.
  • the second convex portion (82) projects downward from the plate-like portion (83).
  • the second convex portion (82) contacts the movable contact body (4) at least when an operating force is applied to the pusher (3).
  • the elastic members (8, 8B) and the movable contact body (4) are more likely to come into contact with each other than when the second convex portion (82) is not provided. Therefore, the operating force applied to the pusher (3) is easily transmitted to the movable contact body (4). Furthermore, compared to the case where the second convex portion (82) is not provided, the effect of the elastic members (8, 8B) in mitigating impact can be improved.
  • the upper surface (810) of the first convex portion (81) is planar in the second aspect.
  • the lower surface (820) of the second convex portion (82) is planar.
  • the area of the lower surface (820) of the second convex portion (82) is smaller than the area of the upper surface (810) of the first convex portion (81).
  • the movable contact body (4 ), the position where force is transmitted from the second convex portion (82) is unlikely to shift.
  • the lower surface of the second convex portion (82) is a downwardly convex curved surface.
  • the contact area between the second convex portion (82) and the movable contact body (4) is relatively small, so that force is transmitted from the second convex portion (82) of the movable contact body (4). It is difficult for the position of the push switch (1, 1A) to shift, and the operating feeling of the push switch (1, 1A) can be stabilized.
  • the elastic member (8, 8B) is arranged above and below the peripheral edge of the plate-like portion (83). It further has a support portion (84) projecting along the direction. The support portion (84) contacts a side surface (501) along the vertical direction of the inner surface of the case (5, 5A) at least when an operating force is applied to the pusher (3).
  • the elastic members (8, 8B) are positioned by the support portion (84) coming into contact with the side surface (501) of the case (5, 5A), the elastic members (8, 8B) This can reduce the possibility of misalignment.
  • the support portion (84) projects downward from the peripheral edge of the plate-like portion (83).
  • the support part (84) can be arranged in the empty space below the plate-shaped part (83). Therefore, it is possible to reduce the possibility that the vertical dimension of the push switch (1, 1A) will need to be increased by the amount that the support portion (84) is provided.
  • the elastic member (8, 8B) further includes a second convex portion (82).
  • the second convex portion (82) projects downward from the plate-like portion (83).
  • the second convex portion (82) contacts the movable contact body (4) at least when an operating force is applied to the pusher (3).
  • the second convex portion (82) protrudes below the lower surface (840) of the support portion (84).
  • the second protrusion (82) and the movable contact body (4) are more likely to come into contact with each other than when the protrusion amount of the second protrusion (82) is smaller than the above.
  • the support portion (84) has an annular shape when viewed from the top and bottom.
  • the elastic members (8, 8B) are easily positioned in the case (5, 5A).
  • the upper surface (810) of the first convex portion (81) is It fits inside the outer circumferential line (320) of the lower surface (32) of the pusher (3).
  • the case (5, 5A) includes a case body (53), a protrusion (54), has.
  • the case body (53) has a recess (50).
  • the protrusion (54) protrudes upward from the case body (53).
  • the protrusion (54) protrudes above the upper surface (810) of the first protrusion (81).
  • the elastic member (8, 8B) is connected to the case (5, 5A), the pusher (3 ) and is not coupled to the movable contact body (4).
  • the configurations other than the first aspect are not essential to the push switch (1, 1A) and can be omitted as appropriate.

Landscapes

  • Push-Button Switches (AREA)

Abstract

La présente invention a pour but d'augmenter la résistance aux chocs d'un interrupteur à bouton-poussoir. La solution selon l'invention porte sur un interrupteur à bouton-poussoir (1) comprenant : un boîtier (5) ; un contact fixe (6) ; un contact mobile (4) ; un poussoir (3) ; et un élément élastique (8). Le contact mobile (4) est disposé au-dessus du contact fixe (6). Le poussoir (3) est disposé au-dessus du contact mobile (4), et lors de la réception d'une force de fonctionnement poussant vers le bas, transmet la force de fonctionnement au contact mobile (4). L'élément élastique (8) est interposé entre le poussoir (3) et le contact mobile (4). Le module élastique de l'élément élastique (8) est inférieur au module élastique du poussoir (3). L'élément élastique (8) présente une partie en forme de plaque (83) et une première partie en saillie (81). La première partie en saillie (81) fait saillie vers le haut à partir de la partie en forme de plaque (83), et entre en contact avec le poussoir (3) au moins lorsque la force de fonctionnement a été communiquée au poussoir (3).
PCT/JP2023/019541 2022-06-23 2023-05-25 Interrupteur à bouton-poussoir WO2023248701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-101312 2022-06-23
JP2022101312 2022-06-23

Publications (1)

Publication Number Publication Date
WO2023248701A1 true WO2023248701A1 (fr) 2023-12-28

Family

ID=89379836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/019541 WO2023248701A1 (fr) 2022-06-23 2023-05-25 Interrupteur à bouton-poussoir

Country Status (1)

Country Link
WO (1) WO2023248701A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11144562A (ja) * 1997-11-13 1999-05-28 Matsushita Electric Ind Co Ltd プッシュオンスイッチ
JP2010251101A (ja) * 2009-04-15 2010-11-04 Alps Electric Co Ltd 入力装置
JP3172749U (ja) * 2010-10-26 2012-01-05 鴻海精密工業股▲ふん▼有限公司 プッシュスイッチ
JP2016081915A (ja) * 2014-10-09 2016-05-16 シチズン電子株式会社 プッシュスイッチ
WO2019230100A1 (fr) * 2018-05-29 2019-12-05 アルプスアルパイン株式会社 Interrupteur à bouton-poussoir

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11144562A (ja) * 1997-11-13 1999-05-28 Matsushita Electric Ind Co Ltd プッシュオンスイッチ
JP2010251101A (ja) * 2009-04-15 2010-11-04 Alps Electric Co Ltd 入力装置
JP3172749U (ja) * 2010-10-26 2012-01-05 鴻海精密工業股▲ふん▼有限公司 プッシュスイッチ
JP2016081915A (ja) * 2014-10-09 2016-05-16 シチズン電子株式会社 プッシュスイッチ
WO2019230100A1 (fr) * 2018-05-29 2019-12-05 アルプスアルパイン株式会社 Interrupteur à bouton-poussoir

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