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WO2024070010A1 - Dispositif d'entrée de pression - Google Patents

Dispositif d'entrée de pression Download PDF

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Publication number
WO2024070010A1
WO2024070010A1 PCT/JP2023/008557 JP2023008557W WO2024070010A1 WO 2024070010 A1 WO2024070010 A1 WO 2024070010A1 JP 2023008557 W JP2023008557 W JP 2023008557W WO 2024070010 A1 WO2024070010 A1 WO 2024070010A1
Authority
WO
WIPO (PCT)
Prior art keywords
reaction force
force characteristic
input device
elastic member
metallic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/008557
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English (en)
Japanese (ja)
Inventor
純一 宮本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Alpine Co Ltd
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 Alps Alpine Co Ltd filed Critical Alps Alpine Co Ltd
Priority to CN202380060427.8A priority Critical patent/CN119744431A/zh
Priority to JP2024549074A priority patent/JPWO2024070010A1/ja
Publication of WO2024070010A1 publication Critical patent/WO2024070010A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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 invention relates to a pressure input device.
  • Patent Document 1 discloses a technology in which a push-on switch is configured to cause a reversible movable contact to perform a reversible operation by a push button, in which a pressing elastic body is provided in the center of the underside of the push button, and the reversible movable contact is pressed and reversed via the pressing elastic body, thereby deforming (reducing) the pressing elastic body by a predetermined amount prior to the reversal operation of the reversible movable contact, thereby increasing the operating stroke by this amount.
  • a pressing input device includes a housing having a first storage section, a central fixed contact provided at the bottom of the first storage section, a base, a metallic inversion dome installed above the base, an elastic member installed above the metallic inversion dome, and an operating member installed above the elastic member and supported so as to be displaceable downward.
  • the reaction force characteristic is such that the reaction force monotonically increases from the initial position to the maximum position, the reaction force monotonically decreases from the maximum position to the minimum position, and the reaction force monotonically decreases from the minimum position onward.
  • the reaction force characteristic when a single elastic member is pushed downward is a first reaction force characteristic where the reaction force increases monotonically from the initial position
  • the reaction force characteristic when a single elastic member is pushed downward is a second reaction force characteristic where the reaction force increases monotonically from the initial position
  • the reaction force characteristic when an operating member is displaced downward is a composite reaction force characteristic that combines the first reaction force characteristic and the second reaction force characteristic.
  • a plate-shaped intermediate member that is larger in area than the elastic member when viewed from above is provided between the metallic inversion dome and the elastic member, and the elastic member is made of a metallic leaf spring member whose peripheral portion abuts against the plate-shaped intermediate member and whose center portion is separated from the plate-shaped intermediate member.
  • the pressure input device can provide the operator with a sharp operating feel.
  • FIG. 1 is an external perspective view of a pressing input device according to an embodiment
  • FIG. 1 is an exploded perspective view of a pressing input device according to an embodiment
  • 1 is a cross-sectional view of a pressing input device according to an embodiment
  • FIG. 1 is a diagram illustrating an operation of a pressing input device according to an embodiment
  • FIG. 13 is a diagram showing reaction force characteristics of a pressing input device according to an embodiment
  • the Z-axis direction in the drawings will be the up-down direction
  • the Y-axis direction in the drawings will be the left-right direction
  • the X-axis direction in the drawings will be the front-rear direction.
  • the positive Z-axis direction will be the up direction
  • the positive Y-axis direction will be the right direction
  • the positive X-axis direction will be the front.
  • Fig. 1 is an external perspective view of a pressing input device 100 according to an embodiment.
  • the pressing input device 100 has a generally thin rectangular parallelepiped shape in the up-down direction (Z-axis direction) and has a roughly square shape when viewed from above.
  • the upper surface 110A of the housing 110 is covered by a frame 120.
  • the housing 110 contains a stem 130 and the like.
  • the central portion of the stem 130 is provided with an operating portion 131 that protrudes upward (in the positive direction of the Z axis).
  • the operating part 131 of the stem 130 passes through a circular opening 120A formed in the frame 120 and protrudes upward (positive Z-axis direction) beyond the frame 120. This allows the pressing input device 100 to be pressed downward (negative Z-axis direction) using the operating part 131 of the stem 130, and this pressing operation can switch the switch from an off state to an on state.
  • Fig. 2 is an exploded perspective view of the pressing input device 100 according to one embodiment.
  • Fig. 3 is a cross-sectional view of the pressing input device 100 according to one embodiment.
  • the pressing input device 100 includes, in order from the bottom side in the figure (Z-axis negative side), a housing 110, a metallic inversion dome 140, a plate-shaped intermediate member 150, an elastic member 160, a stem 130, and a frame 120.
  • the housing 110 is an example of a "base”.
  • the housing 110 is a container-like member having a thin rectangular parallelepiped shape in the vertical direction (Z-axis direction). When viewed from above, the housing 110 has a roughly square shape.
  • the housing 110 has a recess 110B that is recessed downward from the upper surface 110A.
  • a metallic inverted dome 140, a plate-shaped intermediate member 150, an elastic member 160, and a stem 130 are housed in that order from the bottom (Z-axis negative side).
  • the housing 110 is formed by insert molding using a relatively hard insulating material (e.g., hard resin, etc.).
  • a pair of left and right side surfaces of the housing 110 are each formed with a claw portion 111 that protrudes outward.
  • the claw portion 111 fits into the opening 120Ba of the hook 120B of the frame 120 and engages with the hook 120B, thereby fixing the frame 120 to the housing 110.
  • a central fixed contact 112 and four peripheral fixed contacts 113 are provided on the bottom 110Ba within the recess 110B of the housing 110.
  • the central fixed contact 112 is provided in the center of the bottom 110Ba.
  • the four peripheral fixed contacts 113 are provided at the four corners of the bottom 110Ba. Both the central fixed contact 112 and the peripheral fixed contacts 113 are formed using a conductive material (e.g., a metal material).
  • the metallic inversion dome 140 is a metallic, thin plate-like member that is disposed on the bottom 110Ba within the recess 110B of the housing 110.
  • the metallic inversion dome 140 has an apex 140A in the center and is dome-shaped with a convex shape facing upward (positive direction of the Z axis).
  • the metallic inversion dome 140 also has a roughly square shape when viewed from above.
  • Each of the four corners on the outer periphery of the metallic inverted dome 140 is provided with a leg 141 that protrudes outward in the radial direction.
  • the metallic inverted dome 140 is placed on the bottom 110Ba of the recess 110B of the housing 110, so that each of the four legs 141 contacts each of the four peripheral fixed contacts 113 provided on the bottom 110Ba of the recess 110B of the housing 110.
  • the metallic inversion dome 140 is a so-called "inversion spring.”
  • the top 140A When the operating part 131 of the stem 130 is pressed, the top 140A is pressed downward by the plate-shaped intermediate member 150, and when a certain operating load is exceeded, the top 140A suddenly elastically deforms (inverts) into a concave shape. This causes the metallic inversion dome 140 to come into contact with the central fixed contact 112 at the back side of the top 140A, and to be electrically connected to the central fixed contact 112. As a result, the metallic inversion dome 140 can electrically connect the central fixed contact 112 and the peripheral fixed contact 113 to each other via the metallic inversion dome 140. When the pressing operation by the operating part 131 of the stem 130 is released, the metallic inversion dome 140 returns to its original convex shape due to elastic force.
  • the metallic inverted dome 140 may have a circular shape when viewed from above, and may not have legs 141.
  • the plate-shaped intermediate member 150 is a flat member disposed between the metallic inverted dome 140 and the elastic member 160.
  • the plate-shaped intermediate member 150 has a generally square shape with a larger area than the elastic member 160 when viewed from above.
  • the plate-shaped intermediate member 150 is a so-called rigid body, and is formed using a relatively hard material (e.g., a resin material, a metal material, etc.).
  • the plate-shaped intermediate member 150 has a pressing portion 151 that protrudes downward from the center of the bottom surface.
  • the pressing portion 151 is a portion that presses the top portion 140A of the metal inversion dome 140 when a pressing operation is performed by the operating portion 131 of the stem 130.
  • the upper surface of the plate-shaped intermediate member 150 is a flat surface 150A on which the elastic member 160 is placed.
  • the elastic member 160 is a thin metal plate-like member that is placed on the flat surface 150A of the plate-like intermediate member 150.
  • the elastic member 160 has a dome shape that is convex upward (positive direction of the Z axis) with an apex 160A in the center.
  • the elastic member 160 also has a roughly square shape when viewed from above.
  • Each of the four corners on the outer periphery of the elastic member 160 is provided with a leg 161 that protrudes outward in the radial direction.
  • each of the four legs 161 (an example of a "periphery") abuts against the flat surface 150A of the plate-shaped intermediate member 150, and the top 160A (an example of a "center”) is separated from the flat surface 150A of the plate-shaped intermediate member 150, and is made of a "metal leaf spring member.”
  • the top 160A of the elastic member 160 is pressed downward by the pressing part 133 of the stem 130, and the elastic member 160 is elastically deformed so as to be gradually crushed while applying an operating load to the stem 130. Then, when the back side portion of the top 160A comes into contact with the flat surface 150A of the plate-shaped intermediate member 150, the elastic member 160 becomes horizontal (i.e., completely crushed). At this time, the operating load applied by the elastic member 160 to the stem 130 is at its maximum. When the pressing operation by the operating part 131 of the stem 130 is released, the elastic member 160 returns to its original convex shape due to the elastic force.
  • the elastic member 160 may have a circular shape when viewed from above, and may not have legs 161.
  • the stem 130 is an example of an "operating member" and is pressed downward by the operator.
  • the stem 130 is made of a relatively hard insulating material (such as hard resin).
  • the stem 130 has an operating portion 131, a support portion 132, and a pressing portion 133.
  • the operating part 131 is located in the center of the stem 130, has a cylindrical shape that protrudes upward from the support part 132, and is the part that is pressed by the operator.
  • the support portion 132 is a flat plate-like portion provided around the operating portion 131.
  • the support portion 132 is provided integrally with the operating portion 131 and supports the operating portion 131.
  • the support portion 132 has a roughly square shape when viewed from above.
  • the pressing portion 133 is provided at the center of the bottom surface of the stem 130 and protrudes downward.
  • the pressing portion 133 is a portion that presses the top portion 160A of the elastic member 160 when a pressing operation is performed by the operating portion 131 of the stem 130.
  • the stem 130 is positioned between the frame 120 and the elastic member 160 with the operating portion 131 passing through the opening 120A of the frame 120 and the pressing portion 133 abutting against the top 160A of the elastic member 160.
  • the frame 120 is a flat, metallic member.
  • the frame 120 is fixedly attached to the upper surface 110A of the housing 110, thereby closing the upper opening of the recess 110B of the housing 110 with each component part (metallic inversion dome 140, plate-shaped intermediate member 150, elastic member 160, and stem 130) housed within the recess 110B.
  • the frame 120 is formed by processing a metal plate using a processing method such as press working.
  • a circular opening 120A is formed in the center of the frame 120 to allow the operating portion 131 of the stem 130 to protrude upward.
  • a pair of left and right sides at the outer periphery of the frame 120 are provided with hooks 120B that hang down downward.
  • the hooks 120B have openings 120Ba into which the claw portions 111 provided on the side surfaces of the housing 110 are fitted. This allows the hooks 120B to fix the frame 120 to the housing 110.
  • FIG. 4 is a diagram for explaining the operation of the pressing input device 100 according to an embodiment.
  • the pressing input device 100 when no pressing operation is performed by the operating portion 131 of the stem 130, the pressing input device 100 according to one embodiment has the elastic member 160 in an initial state with a convex shape upward, and the metallic inversion dome 140 also in an initial state with a convex shape upward. Therefore, the metallic inversion dome 140 is in contact with the peripheral fixed contacts 113, but is not in contact with the central fixed contact 112. In other words, the peripheral fixed contacts 113 and the central fixed contact 112 are not electrically connected to each other. Therefore, the pressing input device 100 according to one embodiment is in a switched-off state when no pressing operation is performed by the operating portion 131 of the stem 130.
  • the pressing portion 133 of the stem 130 presses down the top portion 160A of the elastic member 160 in the pressing input device 100 according to one embodiment.
  • the elastic member 160 elastically deforms and presses down the plate-shaped intermediate member 150, and further, the pressing portion 151 of the plate-shaped intermediate member 150 presses down the top portion 140A of the metal inverted dome 140, causing the elastic member 160 to elastically deform.
  • the elastic member 160 when the operating load of the pressing operation by the operating part 131 of the stem 130 exceeds a predetermined threshold (i.e., when the stroke amount of the stem 130 exceeds the top stroke amount), the elastic member 160 is completely crushed and the top 140A of the metal inversion dome 140 elastically deforms into a concave shape (inverts).
  • the stroke amount of the stem 130 becomes the bottom stroke amount, and the back side of the top 140A of the metal inversion dome 140 comes into contact with the central fixed contact 112, thereby electrically connecting with the central fixed contact 112.
  • the pressing input device 100 is switched on by the central fixed contact 112 and the peripheral fixed contact 113 being electrically connected to each other via the metallic inversion dome 140.
  • the pressing input device 100 can provide a clicking sensation in response to the pressing operation by the pressing portion 133 of the stem 130 due to the inversion action of the metallic inversion dome 140. Therefore, the pressing input device 100 according to one embodiment can allow the operator to tactilely know that it has been switched on.
  • the pressing input device 100 when the pressing operation by the pressing portion 133 of the stem 130 is released, the elastic member 160 returns to its original convex shape by its own elastic force, and the metallic inverted dome 140 returns to its original convex shape by its own elastic force. As a result, the pressing input device 100 according to one embodiment returns to the switch-off state.
  • Fig. 5 is a diagram showing reaction force characteristics of the pressing input device 100 according to an embodiment.
  • Fig. 5(a) shows an example of reaction force characteristics when a single elastic member 160 is pressed downward.
  • Fig. 5(b) shows an example of reaction force characteristics when a single metallic inversion dome 140 is pressed downward.
  • Fig. 5(c) shows an example of reaction force characteristics in which the reaction force characteristics of a single elastic member 160 and a single metallic inversion dome 140 are combined.
  • the vertical axis indicates reaction force [N]
  • the horizontal axis indicates the stroke amount [mm] of the pressing operation.
  • the reaction force characteristic is a first reaction force characteristic in which the reaction force increases monotonically from the initial position to the maximum position N1, decreases monotonically from the maximum position N1 to the minimum position N2, and increases monotonically from the minimum position N2 onward.
  • the reaction force characteristic when the single elastic member 160 is pressed downward is a second reaction force characteristic in which the reaction force increases monotonically from the initial position to the maximum position N1.
  • the reaction force of the single elastic member 160 increases more steeply than the reaction force of the single metallic inverted dome 140.
  • the elastic member 160 is stacked above the metallic inversion dome 140 via the plate-shaped intermediate member 150, and since the elastic member 160 is made of a "metallic leaf spring member", the reaction force characteristic when the stem 130 is displaced downward (i.e., when a pressing operation is performed by the operating portion 131 of the stem 130) is a composite reaction force characteristic, as shown in FIG. 5(c), which is a combination of the first reaction force characteristic shown in FIG. 5(b) and the second reaction force characteristic shown in FIG. 5(a).
  • the resultant reaction force characteristic is such that the reaction force increases gradually from the initial position to the maximum position N1, and then decreases sharply from the maximum position N1 to the minimum position N2.
  • the stroke amount from the maximum position N1 to the minimum position N2 i.e., the stroke amount of the stem 130 during the reversing operation of the metal reversal dome 140
  • the stroke amount of the stem 130 during the reversing operation of the metal reversal dome 140 is short in the resultant reaction force characteristic.
  • the top stroke amount in the first reaction force characteristic is S2'
  • the bottom stroke amount in the first reaction force characteristic is S1'.
  • the top stroke amount in the second reaction force characteristic is S2
  • the bottom stroke amount in the first reaction force characteristic is S1.
  • the top stroke amount of the stem 130 in the above composite reaction force characteristic is (S2+S2'), and the bottom stroke amount in the above composite reaction force characteristic is (S1+S1').
  • the pressing input device 100 can make the stroke amount ((S1+S1')-(S2+S2')) from the maximum position N1 to the minimum position N2 in the composite reaction force characteristic shorter than the stroke amount (S1'-S2') from the maximum position N1 to the minimum position N2 in a single metallic inversion dome 140, thereby realizing a short stroke of the stroke amount of the stem 130 during the inversion operation of the metallic inversion dome 140.
  • the stroke amount of the stem 130 during the inversion operation of the metallic inversion dome 140 is approximately 0.03 mm.
  • the pressing input device 100 can make the reaction force drop from the maximum position N1 to the minimum position N2 in the composite reaction force characteristic abrupt, as shown in FIG. 5(c), and can therefore provide the operator with a sharp operating feel.
  • the elastic member 160 hardly bends in the over-stroke region (the region after the minimum position N2) in the composite reaction force characteristics, so that the stroke amount of the stem 130 can be shortened even in the over-stroke region.
  • the pressure input device 100 can make the amount of reduction in the reaction force per unit displacement from the maximum position N1 to the minimum position N2 in the composite reaction force characteristic greater than the amount of reduction in the reaction force per unit displacement from the maximum position N1 to the minimum position N2 in the first reaction force characteristic.
  • the pressure input device 100 can rapidly reduce the reaction force from the maximum position N1 to the minimum position N2 in the composite reaction force characteristic, thereby providing the operator with a sharp operating feel.
  • the second reaction force characteristic of the single elastic member 160 is such that the increase in reaction force per unit displacement rises sharply after the reaction force becomes equal to the reaction force at the maximum position N1 of the single metallic inversion dome 140. This is because after the reaction force of the second reaction force characteristic becomes equal to the reaction force at the maximum position N1 of the single metallic inversion dome 140, the elastic member 160 is completely crushed and does not bend any further.
  • the pressing input device 100 can achieve both a short stroke of the stroke amount of the stem 130 and a low profile for the entire pressing input device 100.
  • the dimension of the elastic member 160 in the up-down direction (Z-axis direction) is smaller than the dimension of the metal inversion dome 140 in the up-down direction (Z-axis direction).
  • the pressure input device 100 can achieve a further reduction in the height of the entire pressure input device 100.
  • the plate-shaped intermediate member 150 has a flat surface 150A on which the elastic member 160 is placed.
  • the pressure input device 100 can achieve a further reduction in the height of the entire pressure input device 100.
  • Pressing input device 110 Housing (base) 110A Upper surface 110B Recess 110Ba Bottom 111 Claw 112 Central fixed contact 113 Peripheral fixed contact 120 Frame 120A Opening 120B Hook 120Ba Opening 130 Stem (operating member) 131 Operation portion 132 Support portion 133 Pressing portion 140 Metallic inverted dome 140A Top portion 141 Leg portion 150 Plate-shaped intermediate member 150A Flat surface 151 Pressing portion 160 Elastic member (metallic leaf spring member) 160A Top (center) 161 Legs (periphery)

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  • Push-Button Switches (AREA)

Abstract

Ce dispositif d'entrée de pression est un dispositif d'entrée dont la caractéristique de force de réaction lorsqu'un seul dôme inversé métallique est poussé vers le bas, est une première caractéristique de force de réaction selon laquelle la force de réaction augmente de manière monotone d'une position initiale à une position maximale, diminue de manière monotone de la position maximale à une position minimale, et augmente de manière monotone à partir de la position minimale, dont la caractéristique de force de réaction lorsqu'un seul élément élastique est poussé vers le bas, est une seconde caractéristique de force de réaction selon laquelle la force de réaction augmente de manière monotone à partir de la position initiale, et dont la caractéristique de force de réaction lorsqu'un élément de fonctionnement est déplacé vers le bas, est une caractéristique de force de réaction synthétisée obtenue par la synthèse de la première caractéristique de force de réaction et de la seconde caractéristique de force de réaction, l'élément intermédiaire en forme de plaque ayant une surface plus large que l'élément élastique lorsqu'il est observé du dessus étant fourni entre le dôme inversé métallique et l'élément élastique, et l'élément élastique comprenant un élément de ressort de plaque métallique ayant une partie périphérique qui est en contact avec l'élément intermédiaire en forme de plaque et une partie centrale qui est éloignée de l'élément intermédiaire en forme de plaque.
PCT/JP2023/008557 2022-09-28 2023-03-07 Dispositif d'entrée de pression Ceased WO2024070010A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202380060427.8A CN119744431A (zh) 2022-09-28 2023-03-07 按压输入装置
JP2024549074A JPWO2024070010A1 (fr) 2022-09-28 2023-03-07

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022154570 2022-09-28
JP2022-154570 2022-09-28

Publications (1)

Publication Number Publication Date
WO2024070010A1 true WO2024070010A1 (fr) 2024-04-04

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PCT/JP2023/008557 Ceased WO2024070010A1 (fr) 2022-09-28 2023-03-07 Dispositif d'entrée de pression

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JP (1) JPWO2024070010A1 (fr)
CN (1) CN119744431A (fr)
WO (1) WO2024070010A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003338231A (ja) * 2002-03-13 2003-11-28 Matsushita Electric Ind Co Ltd プッシュオンスイッチ
JP2011258379A (ja) * 2010-06-08 2011-12-22 Alps Electric Co Ltd スイッチ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003338231A (ja) * 2002-03-13 2003-11-28 Matsushita Electric Ind Co Ltd プッシュオンスイッチ
JP2011258379A (ja) * 2010-06-08 2011-12-22 Alps Electric Co Ltd スイッチ装置

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JPWO2024070010A1 (fr) 2024-04-04
CN119744431A (zh) 2025-04-01

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