WO2019087556A1 - Push switch - Google Patents

Push switch Download PDF

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Publication number
WO2019087556A1
WO2019087556A1 PCT/JP2018/032427 JP2018032427W WO2019087556A1 WO 2019087556 A1 WO2019087556 A1 WO 2019087556A1 JP 2018032427 W JP2018032427 W JP 2018032427W WO 2019087556 A1 WO2019087556 A1 WO 2019087556A1
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WO
WIPO (PCT)
Prior art keywords
movable contact
outer peripheral
dome
peripheral portion
contact
Prior art date
Application number
PCT/JP2018/032427
Other languages
French (fr)
Japanese (ja)
Inventor
卓哉 小笠原
伊鶴 貞松
克敏 舂井
Original Assignee
アルプスアルパイン株式会社
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 アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Priority to CN201880071129.8A priority Critical patent/CN111316392B/en
Priority to JP2019549896A priority patent/JP6907329B2/en
Publication of WO2019087556A1 publication Critical patent/WO2019087556A1/en

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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
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs

Definitions

  • the present invention relates to a push switch.
  • the present invention is made in view of the above-mentioned subject, and it aims at expanding the operation stroke of a push switch, and improving the endurance of a movable contact.
  • the push switch includes a central fixed contact, a peripheral fixed contact disposed around the central fixed contact, a first dome portion, and a first outer peripheral portion formed on the outer periphery of the first dome portion. And a first movable contact whose first outer peripheral portion is disposed on the peripheral fixed contact so that the first dome portion is located above the central fixed contact, and a second dome portion. And a second outer peripheral portion formed on the outer periphery of the second dome portion, the second movable contact disposed on the first movable contact, and the second movable contact disposed on the second movable contact And an operation member capable of pressing the first movable contact and the second movable contact, and a gap is formed between the first dome portion and the second dome portion.
  • the operation stroke of the push switch can be expanded, and the durability of the movable contact can be improved.
  • FIG. 3 is a cross-sectional view showing a first movable contact and a second movable contact; Sectional drawing which shows an example of a push switch.
  • FIG. 1 is a cross-sectional view showing an example of the push switch 100.
  • the push switch 100 of FIG. 1 operates the housing 1, the central fixed contact 2, the peripheral fixed contact 3, two connection terminals 4, the cover 5, the first movable contact 6, the second movable contact 7, and A member 8;
  • FIG. 2 is a plan view showing the push switch 100 of FIG. In the example of FIG. 2, the cover 5, the first movable contact 6, the second movable contact 7, and the operation member 8 are removed from the push switch 100.
  • the housing 1 is a casing formed of an insulating resin and having an open top, and the bottom plate portion 11, an annular side plate portion 12 extending upward from the bottom plate portion 11, a storage portion 13, and a regulation portion 14. And.
  • the planar view shape of the housing 1 is a rectangle, it is not restricted to this.
  • the storage portion 13 is a space surrounded by the bottom plate portion 11, the side plate portion 12, and the cover 5, and the central fixed contact 2, the peripheral fixed contact 3, the first movable contact 6, the second movable contact 7, and the operation member 8.
  • the restricting portion 14 is a portion that restricts the movement of the first movable contact 6 and the second movable contact 7, and is provided on the outer peripheral portion of the upper surface of the bottom plate portion 11.
  • the restricting unit 14 includes a first restricting unit 141 and a second restricting unit 142.
  • the first restricting portion 141 is a portion protruding upward from the outer periphery of the upper surface of the bottom plate portion 11.
  • the first restricting portion 141 is engaged with the first movable contact 6 and the second movable contact 7 to move the first movable contact 6 and the second movable contact 7 in the front-rear and left-right directions (the planar direction perpendicular to the vertical direction). regulate.
  • the second restricting portion 142 is a portion protruding from the upper end portion of the first restricting portion 141 toward the central portion of the bottom plate portion 11.
  • the second restricting portion 142 covers the upper side of the first movable contact 6 and the second movable contact 7 fitted to the first restricting portion 141, and restricts the upward movement of the first movable contact 6 and the second movable contact 7 Do.
  • the central fixed contact 2 is a contact formed of a conductive metal plate and disposed at the center of the upper surface of the bottom plate portion 11.
  • the central fixed contact 2 is embedded in the bottom plate portion 11 by a method such as insert molding, for example, so that a part of the upper surface is exposed from the bottom plate portion 11. Further, the central fixed contact 2 may be fixed to the upper surface of the bottom plate portion 11 by an adhesive or solder.
  • the planar view shape of the center fixed contact 2 is circular, it is not restricted to this.
  • the peripheral fixed contacts 3 are contacts formed of a conductive metal plate and arranged around the central fixed contact 2 in the bottom plate portion 11.
  • the peripheral fixed contact 3 is embedded in the bottom plate 11 by a method such as insert molding, for example, so that a part of the upper surface is exposed from the bottom plate 11.
  • the peripheral fixed contacts 3 may be fixed to the upper surface of the bottom plate portion 11 with an adhesive or solder.
  • the push switch 100 includes two peripheral fixed contacts 3 but may include one or three or more.
  • the planar view shape of the peripheral fixed contact 3 is a rectangle, it is not restricted to this.
  • connection terminal 4 is a terminal for electrically connecting the push switch 100 to an external device.
  • the connection terminal 4 protrudes outward from the side plate portion 12, and one connection terminal 4 is electrically connected to the central fixed contact 2 inside the bottom plate portion 11, and the other connection terminal 4 and the peripheral fixed contact 3 It is electrically connected.
  • the output signal of the push switch 100 is output via the connection terminal 4.
  • the push switch 100 is provided with two connection terminals 4 in the example of FIG. 2, you may provide three or more. Further, the connection terminal 4 may protrude outward from the bottom plate portion 11.
  • the cover 5 is a plate-like member having an opening 51 through which the operation member 8 is inserted, and is disposed at the upper end of the side plate 12.
  • the cover 5 may be fixed to the upper end portion of the side plate portion 12 with an adhesive or may be fitted to the upper end portion of the side plate portion 12.
  • the plan view shape of the cover 5 is also rectangular.
  • the plan view shape of the cover 5 is not limited to the rectangular shape, and may be any shape corresponding to the opening at the top of the housing 1.
  • the first movable contact 6 is a dome-shaped contact formed of a metal plate and having a circular shape in a plan view.
  • the first movable contact 6 is disposed on the bottom plate portion 11.
  • the first movable contact 6 has a first dome portion 61 and a first outer peripheral portion 62.
  • the first dome portion 61 is a spherical portion located at the center of the first movable contact 6.
  • the first dome portion 61 is convex upward when no load is applied, and reverses (is convex downward) when pressed from above.
  • the inverted first dome portion 61 returns to its original shape (is convex upward) when the pressing from above is finished.
  • the first movable contact 6 is a non-inverted first dome so that the lower surface of the inverted first dome 61 (the first dome 61 convex downward) can contact the central fixed contact 2.
  • the portion 61 is disposed to face the central fixed contact 2.
  • the first outer peripheral portion 62 is a portion formed on the outer periphery of the first dome portion 61, has a side surface shape of a truncated cone, and is disposed on the upper surface of the bottom plate portion 11. Since the first movable contact 6 is formed of a single metal plate, the inner peripheral edge of the first outer peripheral portion 62 and the outer peripheral edge of the first dome portion 61 are connected. The first movable contact 6 is disposed such that the first outer peripheral portion 62 contacts the peripheral fixed contact 3, that is, the first outer peripheral portion 62 is positioned above the peripheral fixed contact 3. In addition, the first movable contact 6 is disposed such that the first outer peripheral portion 62 fits with the first restricting portion 141. The shape of the first movable contact 6 will be described in detail later.
  • the second movable contact 7 is a dome-shaped contact which is formed of a metal plate and has a circular shape in a plan view.
  • the second movable contact 7 is disposed on the first movable contact 6 in an overlapping manner.
  • the second movable contact 7 has a second dome portion 71 and a second outer peripheral portion 72.
  • the second dome portion 71 is a spherical portion located at the center of the second movable contact 7.
  • the second dome portion 71 is convex upward when no load is applied, and reverses (is convex downward) when pressed from above. Further, the inverted second dome portion 71 returns to its original shape (is convex upward) when the pressing from above is finished.
  • the second movable contact 7 is disposed such that the second dome portion 71 and the first dome portion 61 face each other.
  • the second outer peripheral portion 72 is a portion formed on the outer periphery of the second dome portion 71, has a side surface shape of a truncated cone, and is disposed on the first movable contact 6. Since the second movable contact 7 is formed of a single metal plate, the inner peripheral edge of the second outer peripheral portion 72 and the outer peripheral edge of the second dome portion 71 are connected. The second movable contact 7 is disposed such that the second outer peripheral portion 72 engages with the first restricting portion 141. The shape of the second movable contact 7 will be described in detail later.
  • the operation member 8 is a member formed of an insulating resin.
  • the operation member 8 is accommodated in the accommodation portion 13 so as to be movable in the vertical direction, and is disposed on the second movable contact 7 so that the first movable contact 6 and the second movable contact 7 can be pressed.
  • the operation member 8 has a button portion 81, a pressing portion 82, and a collar portion 83.
  • the button portion 81 is a portion pressed by the user of the push switch 100.
  • the button portion 81 is formed so as to protrude upward from the collar portion 83, and is disposed so as to protrude from the opening 51 to the outside of the storage portion 13.
  • the pressing portion 82 is a portion that presses the first movable contact 6 and the second movable contact 7.
  • the pressing portion 82 is formed to project downward from the collar portion 83, and is disposed such that the lower surface is in contact with the upper surface of the second dome portion 71.
  • the collar portion 83 is a portion that restricts the upward movement of the operation member 8.
  • the collar portion 83 is formed wider than the opening 51 between the button portion 81 and the pressing portion 82.
  • the collar portion 83 is housed in the housing portion 13, and is disposed such that the upper surface thereof is in contact with the lower surface of the cover 5.
  • the contact between the collar 83 and the cover 5 restricts the upward movement of the operation member 8.
  • the operation member 8 which is not pressed by the user may be urged upward by the first movable contact 6 and the second movable contact 7, and the flange 83 may be held in pressure contact with the lower surface of the cover 5. .
  • first movable contact 6 the shapes of the first movable contact 6 and the second movable contact 7 will be described in detail.
  • design elements of the first movable contact 6 will be described.
  • the design elements of the second movable contact 7 are the same as those of the first movable contact 6, and thus the description thereof is omitted.
  • FIG. 3 is a cross-sectional view showing an example of the first movable contact 6.
  • the first movable contact 6 has a material, a plate thickness T, an operation stroke S, a peak load L, an entire radius R, a dome radius r, an inclination angle ⁇ , a curvature radius CR, and a width W as design elements.
  • the material is a material of a metal plate forming the first movable contact 6.
  • the material of the first movable contact 6 is, for example, stainless steel, but is not limited thereto.
  • the thickness T is the thickness of the metal plate forming the first movable contact 6.
  • the material and thickness T of the first movable contact 6 are determined according to the durability, the price, the ease of processing, and the like.
  • the operation stroke S is the height from the installation surface of the first movable contact 6 (a plane passing through the lower end of the first outer peripheral portion 62) to the top lower surface of the first dome portion 61.
  • the peak load L is a load at which the first dome portion 61 reverses by being applied from above.
  • the operation stroke S and the peak load L are determined according to the specification of the first movable contact 6.
  • the overall radius R is the radius of the planar view shape of the first movable contact 6.
  • the entire radius R is determined in accordance with the dimensions of the storage portion 13.
  • the dome radius r is a radius of a plan view shape of the first dome portion 61.
  • the inclination angle ⁇ is an angle formed by the first outer peripheral portion 62 and the installation surface of the first movable contact 6.
  • the curvature radius CR is a curvature radius of the first dome portion 61.
  • the width W is a length from the inner peripheral edge to the outer peripheral edge of the first outer peripheral portion 62.
  • the dome radius r, the inclination angle ⁇ , the curvature radius CR, and the width W are determined according to the specification of the first movable contact 6.
  • the dome radius r, the inclination angle ⁇ , the curvature radius CR, and the width W are determined. It is determined to satisfy the entire radius R, the operation stroke S, and the peak load L.
  • the dome radius r, the inclination angle ⁇ , the radius of curvature CR, and the width W are closely related to each other, so when any one design factor is determined, the remaining design factors are automatically determined. For example, when the inclination angle ⁇ is determined, a dome radius r satisfying the entire radius R, the operation stroke S, and the peak load L, the curvature radius CR, and the width W are automatically determined.
  • the first movable contact 6 has a small degree of freedom in design. The same applies to the second movable contact 7.
  • the reference numeral of the design element of the first movable contact 6 is given “6”
  • the reference numeral of the design element of the second movable contact 7 is given “7”.
  • FIG. 4 is a cross-sectional view showing an example of the first movable contact 6 and the second movable contact 7.
  • the first movable contact 6 and the second movable contact 7 are formed to fit with the first restricting portion 141. Therefore, the overall radius R6 of the first movable contact 6 and the overall radius R7 of the second movable contact 7 become equal.
  • operation stroke S0 and the peak load L0 of the entire movable contact consisting of the first movable contact 6 and the second movable contact 7 are given as specifications.
  • Operation strokes S6 and S7 and peak loads L6 and L7 are determined to satisfy operation stroke S0 and peak load L0.
  • peak loads L6 and L7 are both determined to be about half of peak load L0. That is, the sum of the peak load L6 and the peak load L7 is determined to be the peak load L0.
  • the peak load L6 is preferably 90% or more and 110% or less of the peak load L7.
  • each of the first movable contact 6 and the second movable contact 7 determines each design element so that a gap C is formed between the first dome portion 61 and the second dome portion 71. Ru.
  • the operation stroke of the lowermost movable contact is the operation stroke of the entire movable contact.
  • the operation stroke S6 of the first movable contact 6 and the height H of the gap C is the operation stroke S0 of the entire movable contact.
  • the operation stroke S0 can be enlarged as compared with the conventional push switch.
  • the inclination angle ⁇ 6 is determined to be larger than the inclination angle ⁇ 7 so that the gap C is formed between the first dome portion 61 and the second dome portion 71.
  • the inclination angle ⁇ 6 is 17.5 degrees
  • the inclination angle ⁇ 7 is 12.5 degrees.
  • the heights H of the operation stroke S6 and the clearance C according to the operation stroke S0 and the peak loads L6 and L7 according to the peak load L0 are satisfied.
  • the dome radii r6 and r7, the curvature radii CR6 and CR7, and the widths W6 and W7 are automatically determined.
  • the dome radius r6 is determined to be larger than the dome radius r7
  • the curvature radius CR6 is determined to be larger than the curvature radius CR7
  • the width W6 is determined to be narrower than the width W7.
  • the inclination angle ⁇ 6 is larger than the inclination angle ⁇ 7 ( ⁇ 6> ⁇ 7)
  • the dome radius r6 is larger than the dome radius r7 (r6> r7)
  • the curvature radius CR6 is larger than the curvature radius CR7 (CR6 > CR7)
  • the width W6 is narrower than the width W7 (W6 ⁇ W7).
  • the inner peripheral edge of the second outer peripheral portion 72 is separated from the first movable contact 6 in contact with the connecting portion between the outer peripheral edge of the first dome portion 61 and the second dome portion 61.
  • the second dome portion 71 is separated from the first dome portion 61, and a gap C is formed.
  • the durability of the entire movable contact can be improved by overlapping the first movable contact 6 and the second movable contact 7.
  • the operation stroke L of the push switch 100 (entire movable contact) can be expanded.
  • the materials and plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 may be determined according to the durability, the price, the ease of processing, etc., and may be identical or different. May be By making the materials and the plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 the same, the design of the first movable contact 6 and the second movable contact 7 can be simplified.
  • one or more movable contacts may be further superimposed on the first movable contact 6 and the second movable contact 7.
  • a movable contact having the same shape as that of the first movable contact 6 may be overlapped on at least one of the upper and lower sides of the first movable contact 6, or at least one of the upper and lower ones of the second movable contact 7
  • the movable contact of the same shape as the movable contact 7 may be overlapped. Thereby, the durability of the entire movable contact can be further improved.
  • the push switch 100 according to the second embodiment will be described with reference to FIG. In this embodiment, other examples of the first movable contact 6 and the second movable contact 7 will be described.
  • the configuration of the push switch 100 according to the present embodiment is the same as that of the first embodiment except for the first movable contact 6 and the second movable contact 7.
  • FIG. 5 is a cross-sectional view showing an example of the first movable contact 6 and the second movable contact 7. As shown in FIG. 5, in the present embodiment, the second movable contact 7 further includes a third outer peripheral portion 73.
  • the third outer peripheral portion 73 is a portion formed on the outer periphery of the second outer peripheral portion 72, and has a side surface shape of a truncated cone. Since the second movable contact 7 is formed of a single metal plate, the inner peripheral edge of the third outer peripheral portion 73 and the outer peripheral edge of the second outer peripheral portion 72 are connected. The second movable contact 7 is disposed such that the third outer peripheral portion 73 is fitted to the first restricting portion 141 instead of the second outer peripheral portion 72. In other words, the second movable contact 7 is formed to fit with the first restricting portion 141. Therefore, the overall radius R6 of the first movable contact 6 and the overall radius R7 of the second movable contact 7 become equal.
  • the inclination angle ⁇ 6 is determined to be smaller or larger than the inclination angle ⁇ 7a of the second outer peripheral portion 72 such that the gap C is formed between the first dome portion 61 and the second dome portion 71. Ru.
  • the inclination angle ⁇ 6 is 12.5 degrees
  • the inclination angle ⁇ 7a is 17.5 degrees.
  • the inclination angle ⁇ 6 is determined to be larger than the inclination angle ⁇ 7 b of the third outer peripheral portion 73 so that the third outer peripheral portion 73 does not prevent the contact between the first outer peripheral portion 62 and the second outer peripheral portion 72.
  • the curvature radius CR6 is determined to be larger than the curvature radius CR7, and the width W6 is determined to be wider than the width W7a of the second outer peripheral portion 72 and the width W7b of the third outer peripheral portion 73.
  • the magnitude relationship between the dome radii r6 and r7a depends on other design factors.
  • the inclination angle ⁇ 6 is larger than the inclination angle ⁇ 7b ( ⁇ 6> ⁇ 7b), the curvature radius CR6 is larger than the curvature radius CR7 (CR6> CR7), and the width W6 is wider than the widths W7a and W7b (W6). > W7a, W7b).
  • the inner peripheral edge of the second outer peripheral portion 72 is separated from the first movable contact 6 in contact with the convex bent portion, that is, the connecting portion between the outer peripheral edge of the second outer peripheral portion 72 and the inner peripheral edge of the third outer peripheral portion 73.
  • the second dome portion 71 is separated from the first dome portion 61, and a gap C is formed.
  • the first movable contact 6 and the second movable contact 7 are formed such that the inclination angle ⁇ 6 is larger than the inclination angle ⁇ 7a, the second outer peripheral portion 72 is the first movable contact 6 as in the first embodiment.
  • the durability of the entire movable contact can be improved by overlapping the first movable contact 6 and the second movable contact 7.
  • the operation stroke L of the push switch 100 (entire movable contact) can be expanded.
  • the radius r7b can be adjusted by adjusting the width W7b and the inclination angle ⁇ 7b of the third outer peripheral portion 73 not involved in the operation stroke S7 of the second movable contact 7 and the peak load L7. it can.
  • the radius r7b is a radius of a plan view shape of a portion obtained by removing the third outer peripheral portion 73 from the second movable contact 7, and corresponds to the entire radius R7 in the first embodiment.
  • the radius r7b (the overall radius R7 in the first embodiment) can be determined to an arbitrary value smaller than the radius R6, so that the design freedom can be improved compared to the first embodiment. .
  • the materials and plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 may be determined according to the durability, the price, the ease of processing, etc., and may be identical or different. May be By making the materials and the plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 the same, the design of the first movable contact 6 and the second movable contact 7 can be simplified.
  • one or more movable contacts may be further superimposed on the first movable contact 6 and the second movable contact 7.
  • a movable contact having the same shape as that of the first movable contact 6 may be overlapped on at least one of the upper and lower sides of the first movable contact 6, or at least one of the upper and lower ones of the second movable contact 7
  • the movable contact of the same shape as the movable contact 7 may be overlapped. Thereby, the durability of the entire movable contact can be further improved.
  • Housing 2 central fixed contact 3: peripheral fixed contact 4: connection terminal 5: cover 6: first movable contact 7: second movable contact 8: operation member 11: bottom plate 12: side plate 13: storage 14: Restriction portion 51: Opening portion 61: First dome portion 62: First outer circumferential portion 71: Second dome portion 72: Second outer circumferential portion 73: Third outer circumferential portion 81: Button portion 82: Pressing portion 83: Flange portion 100: Push switch 141: first regulation unit 142: second regulation unit

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  • Push-Button Switches (AREA)

Abstract

A push switch according to an embodiment comprises: a central fixed contact; a peripheral fixed contact disposed at the periphery of the central fixed contact; a first movable contact which includes a first dome portion and a first outer peripheral portion formed at the outer periphery of the first dome portion, wherein the first outer peripheral portion is disposed on the peripheral fixed contact so that the first dome portion is positioned over the central fixed contact; a second movable contact which includes a second dome portion and a second outer peripheral portion formed at the outer periphery of the second dome portion, and which is disposed on the first movable contact; and an operating member which is disposed on the second movable contact and with which the first movable contact and the second movable contact can be pushed. A gap is formed between the first dome portion and the second dome portion.

Description

プッシュスイッチPush switch
　本発明は、プッシュスイッチに関する。 The present invention relates to a push switch.
　近年、ドーム状の可動接点を備えたプッシュスイッチの小型化がすすめられている。プッシュスイッチは、小型化すると、操作ストロークが縮小し、可動接点の耐久性が低下する。このため、小型のプッシュスイッチに対して、操作ストロークの拡大及び可動接点の耐久性の向上が要望されている。このような要望に応えるため、従来、同形状の可動接点を複数枚重ねて使用する方法が提案されている。 In recent years, downsizing of a push switch having a dome-shaped movable contact has been promoted. When the push switch is miniaturized, the operation stroke is reduced and the durability of the movable contact is reduced. For this reason, the expansion of the operation stroke and the improvement of the durability of the movable contact are required for a small push switch. In order to meet such a demand, conventionally, a method has been proposed in which a plurality of movable contacts of the same shape are stacked and used.
特開２００５－３０２６４３号公報JP, 2005-302643, A
　しかしながら、上記従来の方法では、可動接点の耐久性は向上するものの、操作ストロークを拡大することは困難であった。 However, in the above-mentioned conventional method, although the durability of the movable contact is improved, it is difficult to expand the operation stroke.
　本発明は、上記の課題に鑑みてなされたものであり、プッシュスイッチの操作ストロークを拡大し、可動接点の耐久性を向上させることを目的とする。 The present invention is made in view of the above-mentioned subject, and it aims at expanding the operation stroke of a push switch, and improving the endurance of a movable contact.
　一実施形態に係るプッシュスイッチは、中央固定接点と、前記中央固定接点の周辺に配置された周辺固定接点と、第１ドーム部と、前記第１ドーム部の外周に形成された第１外周部と、を有し、前記第１ドーム部が前記中央固定接点の上方に位置するように、前記第１外周部が前記周辺固定接点の上に配置された第１可動接点と、第２ドーム部と、前記第２ドーム部の外周に形成された第２外周部と、を有し、前記第１可動接点の上に配置された第２可動接点と、前記第２可動接点の上に配置され、前記第１可動接点及び前記第２可動接点を押圧可能な操作部材と、を備え、前記第１ドーム部と前記第２ドーム部との間に隙間が形成される。 The push switch according to one embodiment includes a central fixed contact, a peripheral fixed contact disposed around the central fixed contact, a first dome portion, and a first outer peripheral portion formed on the outer periphery of the first dome portion. And a first movable contact whose first outer peripheral portion is disposed on the peripheral fixed contact so that the first dome portion is located above the central fixed contact, and a second dome portion. And a second outer peripheral portion formed on the outer periphery of the second dome portion, the second movable contact disposed on the first movable contact, and the second movable contact disposed on the second movable contact And an operation member capable of pressing the first movable contact and the second movable contact, and a gap is formed between the first dome portion and the second dome portion.
　本発明の各実施形態によれば、プッシュスイッチの操作ストロークを拡大し、可動接点の耐久性を向上させることができる。 According to each embodiment of the present invention, the operation stroke of the push switch can be expanded, and the durability of the movable contact can be improved.
プッシュスイッチの一例を示す断面図。Sectional drawing which shows an example of a push switch. 図１のプッシュスイッチを示す平面図。The top view which shows the push switch of FIG. 第１可動接点の一例を示す断面図。Sectional drawing which shows an example of a 1st movable contact. 第１可動接点及び第２可動接点の一理を示す断面図。FIG. 3 is a cross-sectional view showing a first movable contact and a second movable contact; プッシュスイッチの一例を示す断面図。Sectional drawing which shows an example of a push switch.
　以下、本発明の各実施形態について、添付の図面を参照しながら説明する。なお、各実施形態に係る明細書及び図面の記載に関して、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重畳した説明を省略する。 Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. In addition, regarding the description of the specification and drawings according to each embodiment, the same reference numerals are given to components having substantially the same functional configuration, and the overlapping description will be omitted.
＜第１実施形態＞
　第１実施形態に係るプッシュスイッチ１００について、図１～図４を参照して説明する。まず、プッシュスイッチ１００の概略構成について説明する。図１は、プッシュスイッチ１００の一例を示す断面図である。図１のプッシュスイッチ１００は、ハウジング１と、中央固定接点２と、周辺固定接点３と、２つの接続端子４と、カバー５と、第１可動接点６と、第２可動接点７と、操作部材８と、を備える。 First Embodiment
The push switch 100 according to the first embodiment will be described with reference to FIGS. 1 to 4. First, the schematic configuration of the push switch 100 will be described. FIG. 1 is a cross-sectional view showing an example of the push switch 100. As shown in FIG. The push switch 100 of FIG. 1 operates the housing 1, the central fixed contact 2, the peripheral fixed contact 3, two connection terminals 4, the cover 5, the first movable contact 6, the second movable contact 7, and A member 8;
　また、図２は、図１のプッシュスイッチ１００を示す平面図である。図２の例では、プッシュスイッチ１００からカバー５、第１可動接点６、第２可動接点７、及び操作部材８が除去されている。 FIG. 2 is a plan view showing the push switch 100 of FIG. In the example of FIG. 2, the cover 5, the first movable contact 6, the second movable contact 7, and the operation member 8 are removed from the push switch 100.
　以下、図１を基準として、プッシュスイッチ１００における方向（上下前後左右）を説明するが、プッシュスイッチ１００における方向はこれに限られない。 Hereinafter, although the direction (upper and lower, front and rear, right and left) in the push switch 100 will be described with reference to FIG. 1, the direction in the push switch 100 is not limited thereto.
　ハウジング１は、絶縁性の樹脂により形成された、上部が開口した筐体であり、底板部１１と、底板部１１から上方に延びる環状の側板部１２と、収納部１３と、規制部１４と、を有する。なお、図２の例では、ハウジング１の平面視形状は、矩形であるが、これに限られない。 The housing 1 is a casing formed of an insulating resin and having an open top, and the bottom plate portion 11, an annular side plate portion 12 extending upward from the bottom plate portion 11, a storage portion 13, and a regulation portion 14. And. In addition, in the example of FIG. 2, although the planar view shape of the housing 1 is a rectangle, it is not restricted to this.
　収納部１３は、底板部１１、側板部１２、及びカバー５により囲まれた空間であり、中央固定接点２、周辺固定接点３、第１可動接点６、第２可動接点７、及び操作部材８を収納する。 The storage portion 13 is a space surrounded by the bottom plate portion 11, the side plate portion 12, and the cover 5, and the central fixed contact 2, the peripheral fixed contact 3, the first movable contact 6, the second movable contact 7, and the operation member 8. Store the
　規制部１４は、第１可動接点６及び第２可動接点７の移動を規制する部分であり、底板部１１の上面の外周部に設けられる。規制部１４は、第１規制部１４１と、第２規制部１４２と、を有する。 The restricting portion 14 is a portion that restricts the movement of the first movable contact 6 and the second movable contact 7, and is provided on the outer peripheral portion of the upper surface of the bottom plate portion 11. The restricting unit 14 includes a first restricting unit 141 and a second restricting unit 142.
　第１規制部１４１は、底板部１１の上面の外周から上方に突出した部分である。第１規制部１４１は、第１可動接点６及び第２可動接点７と嵌合し、第１可動接点６及び第２可動接点７の前後左右方向（上下方向と垂直な平面方向）の移動を規制する。 The first restricting portion 141 is a portion protruding upward from the outer periphery of the upper surface of the bottom plate portion 11. The first restricting portion 141 is engaged with the first movable contact 6 and the second movable contact 7 to move the first movable contact 6 and the second movable contact 7 in the front-rear and left-right directions (the planar direction perpendicular to the vertical direction). regulate.
　第２規制部１４２は、第１規制部１４１の上端部から、底板部１１の中央部に向かって突出した部分である。第２規制部１４２は、第１規制部１４１と嵌合した第１可動接点６及び第２可動接点７の上方を覆い、第１可動接点６及び第２可動接点７の上方向の移動を規制する。 The second restricting portion 142 is a portion protruding from the upper end portion of the first restricting portion 141 toward the central portion of the bottom plate portion 11. The second restricting portion 142 covers the upper side of the first movable contact 6 and the second movable contact 7 fitted to the first restricting portion 141, and restricts the upward movement of the first movable contact 6 and the second movable contact 7 Do.
　中央固定接点２は、導電性の金属板により形成され、底板部１１の上面中央部に配置された接点である。中央固定接点２は、例えば、その上面の一部が底板部１１から露出するように、インサート成形等の方法で底板部１１に埋設される。また、中央固定接点２は、底板部１１の上面に接着剤や半田により固定されてもよい。なお、図２の例では、中央固定接点２の平面視形状は、円形であるが、これに限られない。 The central fixed contact 2 is a contact formed of a conductive metal plate and disposed at the center of the upper surface of the bottom plate portion 11. The central fixed contact 2 is embedded in the bottom plate portion 11 by a method such as insert molding, for example, so that a part of the upper surface is exposed from the bottom plate portion 11. Further, the central fixed contact 2 may be fixed to the upper surface of the bottom plate portion 11 by an adhesive or solder. In addition, in the example of FIG. 2, although the planar view shape of the center fixed contact 2 is circular, it is not restricted to this.
　周辺固定接点３は、導電性の金属板により形成され、底板部１１における中央固定接点２の周囲に配置された接点である。周辺固定接点３は、例えば、その上面の一部が底板部１１から露出するように、インサート成形等の方法で底板部１１に埋設される。また、周辺固定接点３は、底板部１１の上面に接着剤や半田により固定されてもよい。なお、図２の例では、プッシュスイッチ１００は、周辺固定接点３を２つ備えるが、１つ又は３つ以上備えてもよい。また、周辺固定接点３の平面視形状は、矩形であるが、これに限られない。 The peripheral fixed contacts 3 are contacts formed of a conductive metal plate and arranged around the central fixed contact 2 in the bottom plate portion 11. The peripheral fixed contact 3 is embedded in the bottom plate 11 by a method such as insert molding, for example, so that a part of the upper surface is exposed from the bottom plate 11. In addition, the peripheral fixed contacts 3 may be fixed to the upper surface of the bottom plate portion 11 with an adhesive or solder. In the example of FIG. 2, the push switch 100 includes two peripheral fixed contacts 3 but may include one or three or more. Moreover, although the planar view shape of the peripheral fixed contact 3 is a rectangle, it is not restricted to this.
　接続端子４は、プッシュスイッチ１００を外部装置と電気的に接続するための端子である。接続端子４は、側板部１２から外側へ突出しており、底板部１１の内部で、一方の接続端子４は中央固定接点２と電気的に接続され、他方の接続端子４は周辺固定接点３と電気的に接続されている。プッシュスイッチ１００の出力信号は、接続端子４を介して出力される。なお、図２の例では、プッシュスイッチ１００は、接続端子４を２つ備えるが、３つ以上備えてもよい。また、接続端子４は、底板部１１から外側に突出していてもよい。 The connection terminal 4 is a terminal for electrically connecting the push switch 100 to an external device. The connection terminal 4 protrudes outward from the side plate portion 12, and one connection terminal 4 is electrically connected to the central fixed contact 2 inside the bottom plate portion 11, and the other connection terminal 4 and the peripheral fixed contact 3 It is electrically connected. The output signal of the push switch 100 is output via the connection terminal 4. In addition, although the push switch 100 is provided with two connection terminals 4 in the example of FIG. 2, you may provide three or more. Further, the connection terminal 4 may protrude outward from the bottom plate portion 11.
　カバー５は、操作部材８が挿通する開口部５１を有する板状部材であり、側板部１２の上端部に配置される。カバー５は、側板部１２の上端部に接着剤により固定されてもよいし、側板部１２の上端部に嵌合されてもよい。図２の例では、ハウジング１の上部の開口部が矩形であるため、カバー５の平面視形状も矩形となる。しかしながら、カバー５の平面視形状は、矩形に限られず、ハウジング１の上部の開口部に応じた任意の形状とすることができる。 The cover 5 is a plate-like member having an opening 51 through which the operation member 8 is inserted, and is disposed at the upper end of the side plate 12. The cover 5 may be fixed to the upper end portion of the side plate portion 12 with an adhesive or may be fitted to the upper end portion of the side plate portion 12. In the example of FIG. 2, since the opening at the top of the housing 1 is rectangular, the plan view shape of the cover 5 is also rectangular. However, the plan view shape of the cover 5 is not limited to the rectangular shape, and may be any shape corresponding to the opening at the top of the housing 1.
　第１可動接点６は、金属板により形成された平面視形状が円形のドーム状の接点である。第１可動接点６は、底板部１１の上に配置される。第１可動接点６は、第１ドーム部６１と、第１外周部６２と、を有する。 The first movable contact 6 is a dome-shaped contact formed of a metal plate and having a circular shape in a plan view. The first movable contact 6 is disposed on the bottom plate portion 11. The first movable contact 6 has a first dome portion 61 and a first outer peripheral portion 62.
　第１ドーム部６１は、第１可動接点６の中央部に位置する球面状の部分である。第１ドーム部６１は、無荷重の場合、上に凸であり、上方から押圧されると反転する（下に凸になる）。また、反転した第１ドーム部６１は、上方からの押圧が終了すると元の形状に戻る（上に凸になる）。第１可動接点６は、反転した第１ドーム部６１（下に凸になった第１ドーム部６１）の下面が中央固定接点２と接触可能なように、すなわち、反転していない第１ドーム部６１が中央固定接点２と対向するように配置される。 The first dome portion 61 is a spherical portion located at the center of the first movable contact 6. The first dome portion 61 is convex upward when no load is applied, and reverses (is convex downward) when pressed from above. In addition, the inverted first dome portion 61 returns to its original shape (is convex upward) when the pressing from above is finished. The first movable contact 6 is a non-inverted first dome so that the lower surface of the inverted first dome 61 (the first dome 61 convex downward) can contact the central fixed contact 2. The portion 61 is disposed to face the central fixed contact 2.
　第１外周部６２は、第１ドーム部６１の外周に形成された部分であり、円錐台の側面形状を有し、底板部１１の上面に配置される。第１可動接点６は、１枚の金属板により形成されるため、第１外周部６２の内周縁と、第１ドーム部６１の外周縁と、は接続されている。第１可動接点６は、第１外周部６２が周辺固定接点３と接触するように、すなわち、第１外周部６２が周辺固定接点３の上に位置するように配置される。また、第１可動接点６は、第１外周部６２が第１規制部１４１と嵌合するように配置される。なお、第１可動接点６の形状について、詳しくは後述する。 The first outer peripheral portion 62 is a portion formed on the outer periphery of the first dome portion 61, has a side surface shape of a truncated cone, and is disposed on the upper surface of the bottom plate portion 11. Since the first movable contact 6 is formed of a single metal plate, the inner peripheral edge of the first outer peripheral portion 62 and the outer peripheral edge of the first dome portion 61 are connected. The first movable contact 6 is disposed such that the first outer peripheral portion 62 contacts the peripheral fixed contact 3, that is, the first outer peripheral portion 62 is positioned above the peripheral fixed contact 3. In addition, the first movable contact 6 is disposed such that the first outer peripheral portion 62 fits with the first restricting portion 141. The shape of the first movable contact 6 will be described in detail later.
　第２可動接点７は、金属板により形成された平面視形状が円形のドーム状の接点である。第２可動接点７は、第１可動接点６の上に重ねて配置される。第２可動接点７は、第２ドーム部７１と、第２外周部７２と、を有する。 The second movable contact 7 is a dome-shaped contact which is formed of a metal plate and has a circular shape in a plan view. The second movable contact 7 is disposed on the first movable contact 6 in an overlapping manner. The second movable contact 7 has a second dome portion 71 and a second outer peripheral portion 72.
　第２ドーム部７１は、第２可動接点７の中央部に位置する球面状の部分である。第２ドーム部７１は、無荷重の場合、上に凸であり、上方から押圧されると反転する（下に凸になる）。また、反転した第２ドーム部７１は、上方からの押圧が終了すると元の形状に戻る（上に凸になる）。第２可動接点７は、第２ドーム部７１と第１ドーム部６１とが対向するように配置される。 The second dome portion 71 is a spherical portion located at the center of the second movable contact 7. The second dome portion 71 is convex upward when no load is applied, and reverses (is convex downward) when pressed from above. Further, the inverted second dome portion 71 returns to its original shape (is convex upward) when the pressing from above is finished. The second movable contact 7 is disposed such that the second dome portion 71 and the first dome portion 61 face each other.
　第２外周部７２は、第２ドーム部７１の外周に形成された部分であり、円錐台の側面形状を有し、第１可動接点６の上に配置される。第２可動接点７は、１枚の金属板により形成されるため、第２外周部７２の内周縁と、第２ドーム部７１の外周縁と、は接続されている。第２可動接点７は、第２外周部７２が第１規制部１４１と嵌合するように配置される。なお、第２可動接点７の形状について、詳しくは後述する。 The second outer peripheral portion 72 is a portion formed on the outer periphery of the second dome portion 71, has a side surface shape of a truncated cone, and is disposed on the first movable contact 6. Since the second movable contact 7 is formed of a single metal plate, the inner peripheral edge of the second outer peripheral portion 72 and the outer peripheral edge of the second dome portion 71 are connected. The second movable contact 7 is disposed such that the second outer peripheral portion 72 engages with the first restricting portion 141. The shape of the second movable contact 7 will be described in detail later.
　操作部材８は、絶縁性の樹脂により形成された部材である。操作部材８は、上下方向に移動可能なように収納部１３に収納され、第１可動接点６及び第２可動接点７を押圧可能なように、第２可動接点７の上に配置される。操作部材８は、釦部８１と、押圧部８２と、鍔部８３と、を有する。 The operation member 8 is a member formed of an insulating resin. The operation member 8 is accommodated in the accommodation portion 13 so as to be movable in the vertical direction, and is disposed on the second movable contact 7 so that the first movable contact 6 and the second movable contact 7 can be pressed. The operation member 8 has a button portion 81, a pressing portion 82, and a collar portion 83.
　釦部８１は、プッシュスイッチ１００のユーザが押圧操作する部分である。釦部８１は、鍔部８３から上方に突出するように形成され、開口部５１から収納部１３の外側に突出するように配置される。 The button portion 81 is a portion pressed by the user of the push switch 100. The button portion 81 is formed so as to protrude upward from the collar portion 83, and is disposed so as to protrude from the opening 51 to the outside of the storage portion 13.
　押圧部８２は、第１可動接点６及び第２可動接点７を押圧する部分である。押圧部８２は、鍔部８３から下方に突出するように形成され、下面が第２ドーム部７１の上面と接触するように配置される。 The pressing portion 82 is a portion that presses the first movable contact 6 and the second movable contact 7. The pressing portion 82 is formed to project downward from the collar portion 83, and is disposed such that the lower surface is in contact with the upper surface of the second dome portion 71.
　鍔部８３は、操作部材８の上方への移動を規制する部分である。鍔部８３は、釦部８１と押圧部８２の間に開口部５１より広く形成される。鍔部８３は、収納部１３に収納され、その上面がカバー５の下面と接触するように配置される。鍔部８３とカバー５とが接触することにより、操作部材８の上方への移動が規制される。また、ユーザにより押圧操作されていない操作部材８が第１可動接点６及び第２可動接点７により上方へ付勢され、鍔部８３がカバー５の下面に圧接した状態で保持されていても良い。この様な構造にすることで未操作時のガタが無くなり、振動が加わったときのガタつき音を無くすことができる。 The collar portion 83 is a portion that restricts the upward movement of the operation member 8. The collar portion 83 is formed wider than the opening 51 between the button portion 81 and the pressing portion 82. The collar portion 83 is housed in the housing portion 13, and is disposed such that the upper surface thereof is in contact with the lower surface of the cover 5. The contact between the collar 83 and the cover 5 restricts the upward movement of the operation member 8. In addition, the operation member 8 which is not pressed by the user may be urged upward by the first movable contact 6 and the second movable contact 7, and the flange 83 may be held in pressure contact with the lower surface of the cover 5. . With such a structure, rattling at the time of non-operation is eliminated, and rattling noise when vibration is applied can be eliminated.
　次に、第１可動接点６及び第２可動接点７の形状について詳細に説明する。まず、第１可動接点６の設計要素について説明する。第２可動接点７の設計要素は、第１可動接点６と同様であるため、説明を省略する。 Next, the shapes of the first movable contact 6 and the second movable contact 7 will be described in detail. First, design elements of the first movable contact 6 will be described. The design elements of the second movable contact 7 are the same as those of the first movable contact 6, and thus the description thereof is omitted.
　図３は、第１可動接点６の一例を示す断面図である。第１可動接点６は、設計要素として、材質、板厚Ｔ、操作ストロークＳ、ピーク荷重Ｌ、全体半径Ｒ、ドーム半径ｒ、傾斜角度θ、曲率半径ＣＲ、幅Ｗ、を有する。 FIG. 3 is a cross-sectional view showing an example of the first movable contact 6. The first movable contact 6 has a material, a plate thickness T, an operation stroke S, a peak load L, an entire radius R, a dome radius r, an inclination angle θ, a curvature radius CR, and a width W as design elements.
　材質は、第１可動接点６を形成する金属板の材質である。第１可動接点６の材質は、例えば、ステンレスであるが、これに限られない。板厚Ｔは、第１可動接点６を形成する金属板の厚さである。第１可動接点６の材質及び板厚Ｔは、耐久性、価格、加工の容易さなどに応じて決定される。 The material is a material of a metal plate forming the first movable contact 6. The material of the first movable contact 6 is, for example, stainless steel, but is not limited thereto. The thickness T is the thickness of the metal plate forming the first movable contact 6. The material and thickness T of the first movable contact 6 are determined according to the durability, the price, the ease of processing, and the like.
　操作ストロークＳは、第１可動接点６の設置面（第１外周部６２の下端を通る平面）から第１ドーム部６１の頂部下面までの高さである。ピーク荷重Ｌは、上方から加えることにより第１ドーム部６１が反転する荷重である。操作ストロークＳ及びピーク荷重Ｌは、第１可動接点６の仕様に応じて決定される。 The operation stroke S is the height from the installation surface of the first movable contact 6 (a plane passing through the lower end of the first outer peripheral portion 62) to the top lower surface of the first dome portion 61. The peak load L is a load at which the first dome portion 61 reverses by being applied from above. The operation stroke S and the peak load L are determined according to the specification of the first movable contact 6.
　全体半径Ｒは、第１可動接点６の平面視形状の半径である。全体半径Ｒは、収納部１３の寸法に応じて決定される。 The overall radius R is the radius of the planar view shape of the first movable contact 6. The entire radius R is determined in accordance with the dimensions of the storage portion 13.
　ドーム半径ｒは、第１ドーム部６１の平面視形状の半径である。傾斜角度θは、第１外周部６２と第１可動接点６の設置面とのなす角の角度である。曲率半径ＣＲは、第１ドーム部６１の曲率半径である。幅Ｗは、第１外周部６２の内周縁から外周縁までの長さである。ドーム半径ｒ、傾斜角度θ、曲率半径ＣＲ、及び幅Ｗは、第１可動接点６の仕様に応じて決定される。 The dome radius r is a radius of a plan view shape of the first dome portion 61. The inclination angle θ is an angle formed by the first outer peripheral portion 62 and the installation surface of the first movable contact 6. The curvature radius CR is a curvature radius of the first dome portion 61. The width W is a length from the inner peripheral edge to the outer peripheral edge of the first outer peripheral portion 62. The dome radius r, the inclination angle θ, the curvature radius CR, and the width W are determined according to the specification of the first movable contact 6.
　第１可動接点６の材質、全体半径Ｒ、及び板厚Ｔ、操作ストロークＳ、及びピーク荷重Ｌが決定された場合、ドーム半径ｒ、傾斜角度θ、曲率半径ＣＲ、及び幅Ｗは、決定された全体半径Ｒ、操作ストロークＳ、及びピーク荷重Ｌを満たすように決定される。ドーム半径ｒ、傾斜角度θ、曲率半径ＣＲ、及び幅Ｗは、互いに密接に関係しているため、いずれか１つの設計要素が決定されると、残りの設計要素も自動的に決まる。例えば、傾斜角度θが決定された場合、全体半径Ｒ、操作ストロークＳ、及びピーク荷重Ｌを満たすドーム半径ｒ、曲率半径ＣＲ、及び幅Ｗが自動的に決まる。このように、第１可動接点６は、設計自由度が小さい。これは、第２可動接点７についても同様である。 When the material of the first movable contact 6, the overall radius R, the plate thickness T, the operation stroke S, and the peak load L are determined, the dome radius r, the inclination angle θ, the curvature radius CR, and the width W are determined. It is determined to satisfy the entire radius R, the operation stroke S, and the peak load L. The dome radius r, the inclination angle θ, the radius of curvature CR, and the width W are closely related to each other, so when any one design factor is determined, the remaining design factors are automatically determined. For example, when the inclination angle θ is determined, a dome radius r satisfying the entire radius R, the operation stroke S, and the peak load L, the curvature radius CR, and the width W are automatically determined. Thus, the first movable contact 6 has a small degree of freedom in design. The same applies to the second movable contact 7.
　次に、第１可動接点６と第２可動接点７との関係について説明する。以下、第１可動接点６の設計要素の符号には「６」を付し、第２可動接点７の設計要素の符号には「７」を付すものとする。 Next, the relationship between the first movable contact 6 and the second movable contact 7 will be described. Hereinafter, the reference numeral of the design element of the first movable contact 6 is given “6”, and the reference numeral of the design element of the second movable contact 7 is given “7”.
　図４は、第１可動接点６及び第２可動接点７の一例を示す断面図である。上述の通り、第１可動接点６及び第２可動接点７は、第１規制部１４１と嵌合するように形成される。したがって、第１可動接点６の全体半径Ｒ６と、第２可動接点７の全体半径Ｒ７と、は等しくなる。 FIG. 4 is a cross-sectional view showing an example of the first movable contact 6 and the second movable contact 7. As described above, the first movable contact 6 and the second movable contact 7 are formed to fit with the first restricting portion 141. Therefore, the overall radius R6 of the first movable contact 6 and the overall radius R7 of the second movable contact 7 become equal.
　また、第１可動接点６及び第２可動接点７からなる可動接点全体の操作ストロークＳ０及びピーク荷重Ｌ０は仕様として与えられる。操作ストロークＳ６，Ｓ７及びピーク荷重Ｌ６，Ｌ７は、操作ストロークＳ０及びピーク荷重Ｌ０を満たすように決定される。例えば、ピーク荷重Ｌ６，Ｌ７は、いずれもピーク荷重Ｌ０の約半分に決定される。すなわち、ピーク荷重Ｌ６とピーク荷重Ｌ７の合計値がピーク荷重Ｌ０になるように決定される。ピーク荷重Ｌ６は、ピーク荷重Ｌ７の９０％以上１１０％以下であるのが好ましい。このように、ピーク荷重Ｌ６，Ｌ７をほぼ等しくすることにより、第１可動接点６及び第２可動接点７の設計を簡素化できる。 Further, the operation stroke S0 and the peak load L0 of the entire movable contact consisting of the first movable contact 6 and the second movable contact 7 are given as specifications. Operation strokes S6 and S7 and peak loads L6 and L7 are determined to satisfy operation stroke S0 and peak load L0. For example, peak loads L6 and L7 are both determined to be about half of peak load L0. That is, the sum of the peak load L6 and the peak load L7 is determined to be the peak load L0. The peak load L6 is preferably 90% or more and 110% or less of the peak load L7. Thus, by making the peak loads L6 and L7 approximately equal, the design of the first movable contact 6 and the second movable contact 7 can be simplified.
　また、本実施形態では、第１可動接点６及び第２可動接点７は、第１ドーム部６１と第２ドーム部７１との間に隙間Ｃが形成されるように、各設計要素を決定される。従来のプッシュスイッチでは、複数の可動接点は同形状であったため、各可動接点の間には隙間が形成されなかった。このため、従来のプッシュスイッチでは、一番下に配置された可動接点の操作ストロークが、可動接点全体の操作ストロークとなった。これに対して、本実施形態では、第１ドーム部６１と第２ドーム部７１との間に隙間Ｃが形成されるため、第１可動接点６の操作ストロークＳ６と、隙間Ｃの高さＨ（第１ドーム部６１の頂部上面から第２ドーム部７１の頂部下面までの距離）と、の合計が、可動接点全体の操作ストロークＳ０となる。このように、本実施形態によれば、従来のプッシュスイッチと比べて、操作ストロークＳ０を拡大することができる。 Further, in the present embodiment, each of the first movable contact 6 and the second movable contact 7 determines each design element so that a gap C is formed between the first dome portion 61 and the second dome portion 71. Ru. In the conventional push switch, since the plurality of movable contacts have the same shape, no gap is formed between the movable contacts. For this reason, in the conventional push switch, the operation stroke of the lowermost movable contact is the operation stroke of the entire movable contact. On the other hand, in the present embodiment, since the gap C is formed between the first dome portion 61 and the second dome portion 71, the operation stroke S6 of the first movable contact 6 and the height H of the gap C The sum of (the distance from the top of the top of the first dome 61 to the bottom of the top of the second dome 71) is the operation stroke S0 of the entire movable contact. As described above, according to the present embodiment, the operation stroke S0 can be enlarged as compared with the conventional push switch.
　本実施形態では、第１ドーム部６１と第２ドーム部７１との間に隙間Ｃが形成されるように、傾斜角度θ６が傾斜角度θ７より大きく決定される。例えば、傾斜角度θ６は、１７．５度であり、傾斜角度θ７は、１２．５度である。上述の通り、傾斜角度θ６及び傾斜角度θ７が決定されると、操作ストロークＳ０に応じた操作ストロークＳ６及び隙間Ｃの高さＨや、ピーク荷重Ｌ０に応じたピーク荷重Ｌ６，Ｌ７を満たすように、ドーム半径ｒ６、ｒ７、曲率半径ＣＲ６，ＣＲ７、及び幅Ｗ６，Ｗ７が自動的に決まる。この結果、図４に示すように、ドーム半径ｒ６は、ドーム半径ｒ７より大きく決定され、曲率半径ＣＲ６は、曲率半径ＣＲ７より大きく決定され、幅Ｗ６は、幅Ｗ７より狭く決定される。 In the present embodiment, the inclination angle θ6 is determined to be larger than the inclination angle θ7 so that the gap C is formed between the first dome portion 61 and the second dome portion 71. For example, the inclination angle θ6 is 17.5 degrees, and the inclination angle θ7 is 12.5 degrees. As described above, when the inclination angle θ6 and the inclination angle θ7 are determined, the heights H of the operation stroke S6 and the clearance C according to the operation stroke S0 and the peak loads L6 and L7 according to the peak load L0 are satisfied. The dome radii r6 and r7, the curvature radii CR6 and CR7, and the widths W6 and W7 are automatically determined. As a result, as shown in FIG. 4, the dome radius r6 is determined to be larger than the dome radius r7, the curvature radius CR6 is determined to be larger than the curvature radius CR7, and the width W6 is determined to be narrower than the width W7.
　以上まとめると、本実施形態において、傾斜角度θ６は傾斜角度θ７より大きく（θ６＞θ７）、ドーム半径ｒ６はドーム半径ｒ７より大きく（ｒ６＞ｒ７）、曲率半径ＣＲ６は曲率半径ＣＲ７より大きく（ＣＲ６＞ＣＲ７）、幅Ｗ６は幅Ｗ７より狭い（Ｗ６＜Ｗ７）。第１可動接点６及び第２可動接点７をこのように形成することにより、第２外周部７２が、第１可動接点６の上に凸の屈曲部、すなわち、第１外周部６２の内周縁と第１ドーム部６１の外周縁との接続部と接触し、第２外周部７２の内周縁が第１可動接点６から離間する。この結果、第２ドーム部７１が第１ドーム部６１から離間し、隙間Ｃが形成される。 In summary, in the present embodiment, the inclination angle θ6 is larger than the inclination angle θ7 (θ6> θ7), the dome radius r6 is larger than the dome radius r7 (r6> r7), and the curvature radius CR6 is larger than the curvature radius CR7 (CR6 > CR7), the width W6 is narrower than the width W7 (W6 <W7). By forming the first movable contact 6 and the second movable contact 7 in this manner, the second outer peripheral portion 72 is a bent portion convex on the first movable contact 6, that is, the inner peripheral edge of the first outer peripheral portion 62. The inner peripheral edge of the second outer peripheral portion 72 is separated from the first movable contact 6 in contact with the connecting portion between the outer peripheral edge of the first dome portion 61 and the second dome portion 61. As a result, the second dome portion 71 is separated from the first dome portion 61, and a gap C is formed.
　以上説明した通り、本実施形態によれば、第１可動接点６及び第２可動接点７を重ねることにより、可動接点全体の耐久性を向上させることができる。また、第１可動接点６と第２可動接点７との間に隙間Ｃを形成することにより、プッシュスイッチ１００（可動接点全体）の操作ストロークＬを拡大することができる。 As described above, according to the present embodiment, the durability of the entire movable contact can be improved by overlapping the first movable contact 6 and the second movable contact 7. In addition, by forming the gap C between the first movable contact 6 and the second movable contact 7, the operation stroke L of the push switch 100 (entire movable contact) can be expanded.
　なお、第１可動接点６及び第２可動接点７の材質及び板厚Ｔ６，Ｔ７は、耐久性、価格、加工の容易さなどに応じて決定すればよく、同一であってもよいし、異なってもよい。第１可動接点６及び第２可動接点７の材質及び板厚Ｔ６，Ｔ７を同一とすることにより、第１可動接点６及び第２可動接点７の設計を簡素化できる。 The materials and plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 may be determined according to the durability, the price, the ease of processing, etc., and may be identical or different. May be By making the materials and the plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 the same, the design of the first movable contact 6 and the second movable contact 7 can be simplified.
　また、第１可動接点６及び第２可動接点７に、１つ又は複数の可動接点を更に重ねてもよい。例えば、第１可動接点６の上及び下の少なくとも一方に、第１可動接点６と同形状の可動接点を重ねてもよいし、第２可動接点７の上及び下の少なくとも一方に、第２可動接点７と同形状の可動接点を重ねてもよい。これにより、可動接点全体の耐久性を更に向上させることができる。 In addition, one or more movable contacts may be further superimposed on the first movable contact 6 and the second movable contact 7. For example, a movable contact having the same shape as that of the first movable contact 6 may be overlapped on at least one of the upper and lower sides of the first movable contact 6, or at least one of the upper and lower ones of the second movable contact 7 The movable contact of the same shape as the movable contact 7 may be overlapped. Thereby, the durability of the entire movable contact can be further improved.
＜第２実施形態＞
　第２実施形態に係るプッシュスイッチ１００について、図５を参照して説明する。本実施形態では、第１可動接点６及び第２可動接点７の他の例について説明する。なお、本実施形態に係るプッシュスイッチ１００の構成は、第１可動接点６及び第２可動接点７を除き、第１実施形態と同様である。 Second Embodiment
The push switch 100 according to the second embodiment will be described with reference to FIG. In this embodiment, other examples of the first movable contact 6 and the second movable contact 7 will be described. The configuration of the push switch 100 according to the present embodiment is the same as that of the first embodiment except for the first movable contact 6 and the second movable contact 7.
　図５は、第１可動接点６及び第２可動接点７の一例を示す断面図である。図５に示すように、本実施形態において、第２可動接点７は、第３外周部７３を更に備える。 FIG. 5 is a cross-sectional view showing an example of the first movable contact 6 and the second movable contact 7. As shown in FIG. 5, in the present embodiment, the second movable contact 7 further includes a third outer peripheral portion 73.
　第３外周部７３は、第２外周部７２の外周に形成された部分であり、円錐台の側面形状を有する。第２可動接点７は、１枚の金属板により形成されるため、第３外周部７３の内周縁と、第２外周部７２の外周縁と、は接続されている。第２可動接点７は、第２外周部７２の代わりに、第３外周部７３が第１規制部１４１と嵌合するように配置される。言い換えると、第２可動接点７は、第１規制部１４１と嵌合するように形成される。したがって、第１可動接点６の全体半径Ｒ６と、第２可動接点７の全体半径Ｒ７と、は等しくなる。 The third outer peripheral portion 73 is a portion formed on the outer periphery of the second outer peripheral portion 72, and has a side surface shape of a truncated cone. Since the second movable contact 7 is formed of a single metal plate, the inner peripheral edge of the third outer peripheral portion 73 and the outer peripheral edge of the second outer peripheral portion 72 are connected. The second movable contact 7 is disposed such that the third outer peripheral portion 73 is fitted to the first restricting portion 141 instead of the second outer peripheral portion 72. In other words, the second movable contact 7 is formed to fit with the first restricting portion 141. Therefore, the overall radius R6 of the first movable contact 6 and the overall radius R7 of the second movable contact 7 become equal.
　本実施形態では、第１ドーム部６１と第２ドーム部７１との間に隙間Ｃが形成されるように、傾斜角度θ６が、第２外周部７２の傾斜角度θ７ａより小さく、又は大きく決定される。例えば、傾斜角度θ６は、１２．５度であり、傾斜角度θ７ａは、１７．５度である。また、第１外周部６２と第２外周部７２との接触を第３外周部７３が妨げないように、傾斜角度θ６は、第３外周部７３の傾斜角度θ７ｂより大きく決定される。また、曲率半径ＣＲ６は、曲率半径ＣＲ７より大きく決定され、幅Ｗ６は、第２外周部７２の幅Ｗ７ａ及び第３外周部７３の幅Ｗ７ｂより広く決定される。なお、本実施形態において、ドーム半径ｒ６，ｒ７ａの大小関係は、他の設計要素に依存する。 In the present embodiment, the inclination angle θ6 is determined to be smaller or larger than the inclination angle θ7a of the second outer peripheral portion 72 such that the gap C is formed between the first dome portion 61 and the second dome portion 71. Ru. For example, the inclination angle θ6 is 12.5 degrees, and the inclination angle θ7a is 17.5 degrees. Further, the inclination angle θ6 is determined to be larger than the inclination angle θ7 b of the third outer peripheral portion 73 so that the third outer peripheral portion 73 does not prevent the contact between the first outer peripheral portion 62 and the second outer peripheral portion 72. The curvature radius CR6 is determined to be larger than the curvature radius CR7, and the width W6 is determined to be wider than the width W7a of the second outer peripheral portion 72 and the width W7b of the third outer peripheral portion 73. In the present embodiment, the magnitude relationship between the dome radii r6 and r7a depends on other design factors.
　以上まとめると、本実施形態において、傾斜角度θ６は傾斜角度θ７ｂより大きく（θ６＞θ７ｂ）、曲率半径ＣＲ６は曲率半径ＣＲ７より大きく（ＣＲ６＞ＣＲ７）、幅Ｗ６は幅Ｗ７ａ，Ｗ７ｂより広い（Ｗ６＞Ｗ７ａ，Ｗ７ｂ）。傾斜角度θ６が傾斜角度θ７ａより小さくなるように第１可動接点６及び第２可動接点７を形成した場合、図５に示すように、第１外周部６２が、第２可動接点７の下に凸の屈曲部、すなわち、第２外周部７２の外周縁と第３外周部７３の内周縁との接続部と接触し、第２外周部７２の内周縁が第１可動接点６から離間する。この結果、第２ドーム部７１が第１ドーム部６１から離間し、隙間Ｃが形成される。一方、傾斜角度θ６が傾斜角度θ７ａより大きくなるように第１可動接点６及び第２可動接点７を形成した場合、第１実施形態と同様に、第２外周部７２が、第１可動接点６の上に凸の屈曲部、すなわち、第１外周部６２の内周縁と第１ドーム部６１の外周縁との接続部と接触し、第２外周部７２の内周縁が第１可動接点６から離間する。この結果、第２ドーム部７１が第１ドーム部６１から離間し、隙間Ｃが形成される。 In summary, in the present embodiment, the inclination angle θ6 is larger than the inclination angle θ7b (θ6> θ7b), the curvature radius CR6 is larger than the curvature radius CR7 (CR6> CR7), and the width W6 is wider than the widths W7a and W7b (W6). > W7a, W7b). When the first movable contact 6 and the second movable contact 7 are formed such that the inclination angle θ6 is smaller than the inclination angle θ7a, the first outer peripheral portion 62 is located below the second movable contact 7 as shown in FIG. The inner peripheral edge of the second outer peripheral portion 72 is separated from the first movable contact 6 in contact with the convex bent portion, that is, the connecting portion between the outer peripheral edge of the second outer peripheral portion 72 and the inner peripheral edge of the third outer peripheral portion 73. As a result, the second dome portion 71 is separated from the first dome portion 61, and a gap C is formed. On the other hand, when the first movable contact 6 and the second movable contact 7 are formed such that the inclination angle θ6 is larger than the inclination angle θ7a, the second outer peripheral portion 72 is the first movable contact 6 as in the first embodiment. Contact with the connecting portion between the inner peripheral edge of the first outer peripheral portion 62 and the outer peripheral edge of the first dome portion 61, and the inner peripheral edge of the second outer peripheral portion 72 from the first movable contact 6 Separate. As a result, the second dome portion 71 is separated from the first dome portion 61, and a gap C is formed.
　以上説明した通り、本実施形態によれば、第１可動接点６及び第２可動接点７を重ねることにより、可動接点全体の耐久性を向上させることができる。また、第１可動接点６と第２可動接点７との間に隙間Ｃを形成することにより、プッシュスイッチ１００（可動接点全体）の操作ストロークＬを拡大することができる。 As described above, according to the present embodiment, the durability of the entire movable contact can be improved by overlapping the first movable contact 6 and the second movable contact 7. In addition, by forming the gap C between the first movable contact 6 and the second movable contact 7, the operation stroke L of the push switch 100 (entire movable contact) can be expanded.
　また、本実施形態によれば、第２可動接点７の操作ストロークＳ７及びピーク荷重Ｌ７に関与しない第３外周部７３の幅Ｗ７ｂ及び傾斜角度θ７ｂを調整することにより、半径ｒ７ｂを調整することができる。半径ｒ７ｂは、第２可動接点７から第３外周部７３を除いた部分の平面視形状の半径であり、第１実施形態における全体半径Ｒ７に相当する。このように、本実施形態によれば、半径ｒ７ｂ（第１実施形態における全体半径Ｒ７）を半径Ｒ６より小さい任意の値に決定できるため、第１実施形態より設計自由度を向上させることができる。 Further, according to the present embodiment, the radius r7b can be adjusted by adjusting the width W7b and the inclination angle θ7b of the third outer peripheral portion 73 not involved in the operation stroke S7 of the second movable contact 7 and the peak load L7. it can. The radius r7b is a radius of a plan view shape of a portion obtained by removing the third outer peripheral portion 73 from the second movable contact 7, and corresponds to the entire radius R7 in the first embodiment. As described above, according to the present embodiment, the radius r7b (the overall radius R7 in the first embodiment) can be determined to an arbitrary value smaller than the radius R6, so that the design freedom can be improved compared to the first embodiment. .
　なお、第１可動接点６及び第２可動接点７の材質及び板厚Ｔ６，Ｔ７は、耐久性、価格、加工の容易さなどに応じて決定すればよく、同一であってもよいし、異なってもよい。第１可動接点６及び第２可動接点７の材質及び板厚Ｔ６，Ｔ７を同一とすることにより、第１可動接点６及び第２可動接点７の設計を簡素化できる。 The materials and plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 may be determined according to the durability, the price, the ease of processing, etc., and may be identical or different. May be By making the materials and the plate thicknesses T6 and T7 of the first movable contact 6 and the second movable contact 7 the same, the design of the first movable contact 6 and the second movable contact 7 can be simplified.
　また、第１可動接点６及び第２可動接点７に、１つ又は複数の可動接点を更に重ねてもよい。例えば、第１可動接点６の上及び下の少なくとも一方に、第１可動接点６と同形状の可動接点を重ねてもよいし、第２可動接点７の上及び下の少なくとも一方に、第２可動接点７と同形状の可動接点を重ねてもよい。これにより、可動接点全体の耐久性を更に向上させることができる。 In addition, one or more movable contacts may be further superimposed on the first movable contact 6 and the second movable contact 7. For example, a movable contact having the same shape as that of the first movable contact 6 may be overlapped on at least one of the upper and lower sides of the first movable contact 6, or at least one of the upper and lower ones of the second movable contact 7 The movable contact of the same shape as the movable contact 7 may be overlapped. Thereby, the durability of the entire movable contact can be further improved.
　なお、上記実施形態に挙げた構成等に、その他の要素との組み合わせなど、ここで示した構成に本発明が限定されるものではない。これらの点に関しては、本発明の趣旨を逸脱しない範囲で変更可能であり、その応用形態に応じて適切に定めることができる。 Note that the present invention is not limited to the configurations shown here, such as combinations with other elements in the configurations and the like described in the above embodiments. These points can be changed without departing from the spirit of the present invention, and can be appropriately determined according to the application form.
　また、本国際出願は、２０１７年１０月３０日に出願した日本国特許出願第２０１７－２０９５７０号に基づく優先権を主張するものであり、当該出願の全内容を本国際出願に援用する。 In addition, this international application claims priority based on Japanese Patent Application No. 2017-209570 filed on October 30, 2017, and the entire content of the application is incorporated into this international application.
１：ハウジング
２：中央固定接点
３：周辺固定接点
４：接続端子
５：カバー
６：第１可動接点
７：第２可動接点
８：操作部材
１１：底板部
１２：側板部
１３：収納部
１４：規制部
５１：開口部
６１：第１ドーム部
６２：第１外周部
７１：第２ドーム部
７２：第２外周部
７３：第３外周部
８１：釦部
８２：押圧部
８３：鍔部
１００：プッシュスイッチ
１４１：第１規制部
１４２：第２規制部 1: Housing 2: central fixed contact 3: peripheral fixed contact 4: connection terminal 5: cover 6: first movable contact 7: second movable contact 8: operation member 11: bottom plate 12: side plate 13: storage 14: Restriction portion 51: Opening portion 61: First dome portion 62: First outer circumferential portion 71: Second dome portion 72: Second outer circumferential portion 73: Third outer circumferential portion 81: Button portion 82: Pressing portion 83: Flange portion 100: Push switch 141: first regulation unit 142: second regulation unit

Claims (7)

  1. 　中央固定接点と、
    　前記中央固定接点の周辺に配置された周辺固定接点と、
    　第１ドーム部と、前記第１ドーム部の外周に形成された第１外周部と、を有し、前記第１ドーム部が前記中央固定接点の上方に位置するように、前記第１外周部が前記周辺固定接点の上に配置された第１可動接点と、
    　第２ドーム部と、前記第２ドーム部の外周に形成された第２外周部と、を有し、前記第１可動接点の上に配置された第２可動接点と、
    　前記第２可動接点の上に配置され、前記第１可動接点及び前記第２可動接点を押圧可能な操作部材と、
    を備え、
    　前記第１ドーム部と前記第２ドーム部との間に隙間が形成される
    プッシュスイッチ。     Central fixed contact,
    Peripheral fixed contacts disposed around the central fixed contact;
    The first outer peripheral portion has a first dome portion and a first outer peripheral portion formed on the outer periphery of the first dome portion, and the first outer peripheral portion is positioned above the central fixed contact. A first movable contact disposed on the peripheral fixed contact,
    A second movable contact having a second dome portion and a second outer peripheral portion formed on the outer periphery of the second dome portion, the second movable contact being disposed on the first movable contact;
    An operating member disposed on the second movable contact and capable of pressing the first movable contact and the second movable contact;
    Equipped with
    A push switch in which a gap is formed between the first dome portion and the second dome portion.
  2. 　前記第１可動接点のピーク荷重は、前記第２可動接点のピーク荷重の９０％以上１１０％以下である
    請求項１に記載のプッシュスイッチ。     The push switch according to claim 1, wherein the peak load of the first movable contact is 90% or more and 110% or less of the peak load of the second movable contact.
  3. 　前記第１可動接点の半径と前記第２可動接点の半径とは等しい
    請求項１又は請求項２に記載のプッシュスイッチ。     The push switch according to claim 1 or 2, wherein a radius of the first movable contact and a radius of the second movable contact are equal.
  4. 　前記第１外周部の傾斜角度は、前記第２外周部の傾斜角度より大きい
    請求項１から請求項３までのいずれか１項に記載のプッシュスイッチ。     The push switch according to any one of claims 1 to 3, wherein the inclination angle of the first outer peripheral portion is larger than the inclination angle of the second outer peripheral portion.
  5. 　前記第１ドーム部の曲率半径は、前記第２ドーム部の曲率半径より大きい
    請求項１から請求項４までのいずれか１項に記載のプッシュスイッチ。     The push switch according to any one of claims 1 to 4, wherein a radius of curvature of the first dome portion is larger than a radius of curvature of the second dome portion.
  6. 　前記第１外周部の幅は、前記第２外周部の幅より狭い
    請求項１から請求項５までのいずれか１項に記載のプッシュスイッチ。     The push switch according to any one of claims 1 to 5, wherein a width of the first outer peripheral portion is narrower than a width of the second outer peripheral portion.
  7. 　前記第２可動接点は、前記第２外周部の外周に形成された第３外周部を有し、
    　前記第１外周部の傾斜角度は、前記第２外周部及び前記第３外周部の傾斜角度より小さく、
    　前記第１ドーム部の曲率半径は、前記第２ドーム部の曲率半径より小さく、
    　前記第１外周部の幅は、前記第３外周部の幅より広い
    請求項１から請求項３までのいずれか１項に記載のプッシュスイッチ。     The second movable contact has a third outer peripheral portion formed on the outer periphery of the second outer peripheral portion,
    The inclination angle of the first outer peripheral portion is smaller than the inclination angles of the second outer peripheral portion and the third outer peripheral portion,
    The radius of curvature of the first dome portion is smaller than the radius of curvature of the second dome portion,
    The push switch according to any one of claims 1 to 3, wherein a width of the first outer peripheral portion is wider than a width of the third outer peripheral portion.
PCT/JP2018/032427 2017-10-30 2018-08-31 Push switch WO2019087556A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880071129.8A CN111316392B (en) 2017-10-30 2018-08-31 Push switch
JP2019549896A JP6907329B2 (en) 2017-10-30 2018-08-31 Push switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017209570 2017-10-30
JP2017-209570 2017-10-30

Publications (1)

Publication Number Publication Date
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TW (1) TWI690964B (en)
WO (1) WO2019087556A1 (en)

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TWI690964B (en) 2020-04-11
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JPWO2019087556A1 (en) 2020-10-22
CN111316392B (en) 2022-02-22

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