WO2018133440A1 - 一种带扭簧的薄型开关 - Google Patents

一种带扭簧的薄型开关 Download PDF

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Publication number
WO2018133440A1
WO2018133440A1 PCT/CN2017/103130 CN2017103130W WO2018133440A1 WO 2018133440 A1 WO2018133440 A1 WO 2018133440A1 CN 2017103130 W CN2017103130 W CN 2017103130W WO 2018133440 A1 WO2018133440 A1 WO 2018133440A1
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WIPO (PCT)
Prior art keywords
torsion spring
base
handle
elastic piece
switch
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PCT/CN2017/103130
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English (en)
French (fr)
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余正明
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余正明
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Publication of WO2018133440A1 publication Critical patent/WO2018133440A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs

Definitions

  • the utility model relates to the field of switch technology.
  • the thin-type switch with the patent number 201520177651.8 adopts a circular base and a handle, and is provided with an annular contact elastic piece.
  • the annular elastic piece is in contact with the fixed terminal, and the elastic wire is combined with the handle and the annular elastic piece to increase the hand feeling and the sound feeling.
  • the annular contact spring piece processing in the switch is relatively complicated, and it is not easy to install the alignment position, and the short life of the elastic wire affects the service life of the entire switch.
  • the problem to be solved by the present invention is to provide a thin switch with a torsion spring that is simple in structure and easy to manufacture.
  • a thin switch with a torsion spring comprising a handle, a base, an upper cover, a contact elastic piece and a spring, and a fixed terminal, wherein a guide pillar and a spring sleeve are arranged in the middle of the base
  • the handle is mounted on the spring-loaded guide post, the contact spring and the fixed terminal are mounted on the base; the upper cover is fastened to the base
  • the contact elastic piece and the fixed terminal are covered therein, the middle part of the upper cover is a through hole, and the upper part of the upper handle is punched out for pressing
  • further comprises a torsion spring wherein the torsion spring is installed in a groove of the base, and one end is fixed to the base, The other end protrudes to the side of the handle; the corresponding side wall of the handle is provided with a protruding platform and a guiding inclined surface.
  • the contact elastic piece When the handle is lowered, the contact elastic piece is released, and the torsion spring is extended by the protruding platform, and is pressed down to a certain stroke.
  • the torsion spring is detached from the shank and rebounds along the guiding slanting surface, and hits the top wall of the upper cover to make a sound.
  • the base comprises a base body and a groove extending from an edge of the base body away from the base guide post, and the torsion spring is disposed in the groove such that the torsion spring extension section is as long as possible.
  • the contact elastic piece comprises a spring piece contact portion and a spring piece mounting portion, the elastic piece contact portion is curved, and one end head is provided with a spring foot; the elastic foot is located above the fixed terminal, and the corresponding side wall of the handle is provided with the contact elastic piece
  • the front portion of the elastic foot contacting the elastic piece is hung on the hanging arm of the handle and separated from the fixed terminal. After the handle is pressed, the hanging arm descends to release the elastic foot, and the contact elastic piece is in its own elastic force. The springback under the action causes the spring foot to contact the fixed terminal to realize the switch conduction.
  • the elastic piece mounting portion is formed by bending and bending the other end of the elastic piece contact portion, and the elastic piece mounting portion protrudes from the base for external line connection.
  • the fixed terminal includes a terminal mounting portion and a terminal contact portion corresponding to the contact elastic piece foot.
  • the terminal contact portion is sleeved on the terminal mounting post of the base, and the terminal mounting portion is bent at one end of the terminal contact portion to extend out of the base. External line connection.
  • the shank stroke groove is arranged around the guide post on the base corresponding to the cylindrical shank shape.
  • the base is provided with a hook and a plug hole
  • the upper cover is correspondingly provided with a card hole and a plug post.
  • the lower portion of the handle is provided with an outer convex edge that cooperates with the inner wall of the upper cover to prevent the handle from coming off and overlapping the contact elastic piece.
  • the thin switch can increase the torsion spring in the switch, and can make the switch have a good touch and listen during the pressing process under the premise that the switch is as small as possible. sense.
  • the torsion spring is disposed in the extending groove of the base, so that the torsion spring is far away from the center position of the base, that is, the handle mounting position is as far as possible, and the torsion spring protruding section is as long as possible and has a long elastic buffer zone, thereby improving the use of the torsion spring. life.
  • the contact spring piece adopts curved elastic piece, which is more convenient to install and saves materials and reduces cost.
  • FIG. 1 is a schematic exploded view of a thin switch embodiment of the present invention
  • FIG. 2 is a schematic view showing the assembly structure of the base of the thin switch embodiment of the present invention.
  • FIG. 3 is a schematic view showing the assembled structure of the thin switch embodiment of the present invention.
  • FIG. 4 is a schematic view showing the structure of the contact elastic piece and the handle according to the thin switch embodiment of the present invention.
  • the thin switch described in this embodiment includes an upper cover 3 which is provided with a circular through hole in the middle of the handle 1, the base 2.
  • a guide post 21 is arranged in the middle of the base 2, and around the guide post 21
  • the handle stroke groove is set corresponding to the shape of the handle 1.
  • the spring 5 is sleeved on the guide post 21, and a guide rod is arranged according to the corresponding guide post below the handle 1.
  • the handle 1 is mounted by the guide rod into the guide post 21 of the sleeve 5 with the spring 5.
  • the contact elastic piece 4 and the fixed terminal 6 are mounted on one side of the base on the handle, and the torsion spring 7 is also mounted on the base.
  • the corresponding engaging structure is respectively set by the handle 1 corresponding to the contact spring piece and the torsion spring.
  • the upper edge of the base 2 is provided with a hook 22 and a card hole 23, and the upper cover 3 is correspondingly provided with a card hole 31 and a plug post 32.
  • the base 2 and the upper cover 3 are fastened by the snap hole, and the contact elastic piece 4, the spring 5, the fixed terminal 6, and the torsion spring 7 are housed inside.
  • the upper part of the handle 1 is exposed from the circular through hole of the upper cover for pressing, and the lower part of the handle 1 is provided with an outer convex edge 13 which cooperates with the inner top wall of the upper cover to prevent the handle from coming out, and simultaneously contacts the fixing portion of the elastic piece 4. Also on the convex edge 13.
  • the base comprises a base body 25, and the base seat 25 is provided with a cylindrical upper cover 3 in a cylindrical shape, and the cylindrical handle 1 is fitted therein with a stroke groove for moving the handle 1 up and down.
  • a torsion spring 7 is mounted in the recess 251 at a groove 251 extending from the edge of the base body 25. One end of the torsion spring 7 is fixed to the base, and the other end protrudes to the side of the handle 1. Since the torsion spring is far away from the handle mounted in the middle of the base, the extended section of the torsion spring is long.
  • the side wall of the handle 1 is provided with a projection 12 and a guiding slope 11 , and the initial state of the torsion spring is located below the projection 1 of the handle 1 . Pressing the handle 1, the protruding platform 12 presses down the torsion spring 7 to extend the section, and when pressed down to a certain stroke, the torsion spring 7 is detached from the shank of the shank and rebounds along the guiding slope 11 and hits the top wall of the upper cover. sound.
  • the fixed terminal 6 includes a terminal mounting portion 61 and a terminal contact portion 62 corresponding to the spring of the contact elastic piece 4.
  • the terminal mounting portion 61 is sleeved on the terminal mounting post 24 of the base and extends out of the base for external line connection.
  • Contact elastic piece 4 includes elastic piece contact portion and bullet
  • the blade mounting portion 42 has an arc-shaped contact portion that is curved in curvature with the arc of the base edge.
  • the end portion of the elastic piece contact portion has a spring foot 41, and the other end portion is bent downward to extend to form a spring piece mounting portion 42.
  • the mounting portion extends out of the base portion. For external line connection.
  • the elastic piece contact portion and the terminal contact portion are both mounted on the edge of the base, and the elastic foot 41 contacting the elastic piece is located above the fixed terminal contact portion 62.
  • the corresponding side wall of the handle 1 is provided with a protruding hanging arm 14 that cooperates with the contact elastic piece.
  • the front portion of the elastic foot 41 contacting the elastic piece is hung on the hanging arm 14 of the handle and separated from the contact portion 62 of the fixed terminal; after the handle is pressed, the hanging arm 14 descends to release the elastic foot, and the elastic foot is in its own elastic force. Under the action, the rebound is in contact with the fixed terminal to realize the switch conduction.
  • the torsion springs are respectively disposed in the extending slots of the base, and the torsion spring is away from the center of the base, so that the torsion spring protruding section is as long as possible, so that the torsion spring protruding section has a long elastic buffer zone, and the torsion spring is improved.
  • the service life is a part of the base.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

一种带扭簧的薄型开关，包括按柄（1）、底座（2）、上盖（3），底座（2）和上盖（3）扣合形成的空间内设置开关端子、扭簧（7）等，所述扭簧（7）安装于底座（2）一延伸凹槽（251）内，一端与底座（2）固定，另一端伸出至按柄（1）侧边；对应的按柄（1）侧壁设有突台（12）、导引斜面（11），按柄（1）下行时释放开关端子同时通过突台（12）下压扭簧（7）伸出段，下压到一定行程时，扭簧（7）脱离按柄（1）沿导引斜面（11）向上回弹，击打到上盖（3）顶壁发出声音。所述薄型开关通过在开关内增加扭簧（7），能够在开关尽量小的前提下，使开关在按压过程中具有良好的触感和听感。扭簧（7）设置于底座（2）的延伸槽内，使得扭簧（7）离底座（2）中心位置即按柄（1）安装位置尽量远，进而扭簧（7）伸出段尽量长而具有较长的弹力缓冲区，提高了扭簧（7）使用寿命。

Description

一种带扭簧的薄型开关 技术领域
本实用新型涉及开关技术领域。
背景技术
现有设备的很多操作需要使用到薄型开关作为输入手段，开关好坏决定了输入设备的体验，因此开关需要保证良好的手感和使用寿命。现有的开关因为开关内部空间的限制，金属片的弹力相对不足，开关手感不佳。申请人针对该类开关进行了系统和深入的研究，相关技术获得了多篇专利。例如专利号为201520177651.8的薄型开关，该开关采用圆形底座及按柄，配有环形接触弹片，环形弹片与固定端子上下接触，采用弹线与按柄及环形弹片配合增加手感和声感。该开关中环形接触弹片加工比较复杂，且不易安装对位，弹线的寿命较短影响整个开关使用寿命。
实用新型内容
有鉴于此，本实用新型需要解决的问题是提供一种结构简洁、便于制作的带扭簧的薄型开关。
为了解决上述问题，本实用新型采用以下技术方案：一种带扭簧的薄型开关，包括按柄、底座、上盖、接触弹片和弹簧、固定端子，所述底座中部设有一导柱，弹簧套于导柱上，按柄安装到套接有弹簧的导柱上，接触弹片和固定端子安装于底座上；上盖扣合于底座上将 接触弹片和固定端子覆盖于其内，上盖中部为通孔，按柄上部由通孔穿出供按压，还包括扭簧，所述扭簧安装于底座一凹槽内，一端与底座固定，另一端伸出至按柄侧边；对应的按柄侧壁设有突台、导引斜面，按柄下行时释放接触弹片同时通过突台下压扭簧伸出段，下压到一定行程时，扭簧脱离按柄沿导引斜面向上回弹，击打到上盖顶壁发出声音。
优选的，所述底座包括基础座体和从基础座体边缘向远离底座导柱方向延伸出的凹槽，所述扭簧设于凹槽内而使得扭簧伸出段尽量长。
优选的，所述接触弹片包括弹片接触部和弹片安装部，弹片接触部为弧形，一端头设有弹脚；所述弹脚位于固定端子上方，对应的按柄侧壁设有与接触弹片配合的凸出的挂臂；初始状态下，接触弹片的弹脚前段挂在按柄的挂臂上与固定端子分离，按柄被按下后，挂臂下行释放弹脚，接触弹片在自身弹力作用下回弹使弹脚与固定端子接触实现开关导通。
优选的，所述弹片安装部由弹片接触部的另一端头向下弯折延伸而成，该弹片安装部伸出底座供外部线路连接。
优选的，所述固定端子包括端子安装部及与接触弹片弹脚对应的端子接触部，端子接触部套接在底座的端子安装柱上，端子安装部由端子接触部一端弯折延伸出底座供外部线路连接。
优选的，所述底座上导柱周围对应圆柱形按柄形状设按柄行程槽。
优选的，所述底座上设有卡勾及插接孔，上盖对应设置与之配合的卡孔和插接柱。
优选的，所述按柄下部设有与上盖内顶壁配合防止按柄脱出并搭接接触弹片的外凸沿。
与现有技术相比，本申请的有益效果在于：(1)所述薄型开关通过在开关内增加扭簧，能够在开关尽量小的前提下，使开关在按压过程中具有良好的触感和听感。
(2)扭簧设置于底座的延伸槽内，使得扭簧离底座中心位置即按柄安装位置尽量远，进而扭簧伸出段尽量长而具有较长的弹力缓冲区，提高了扭簧使用寿命。
(3)接触弹片采用弧形弹片，安装更加方便，且节约材料降低成本。
附图说明
图1为本实用新型所述薄型开关实施例爆炸结构示意图；
图2为本实用新型所述薄型开关实施例底座组装结构示意图；
图3为本实用新型所述薄型开关实施例组装结构示意图；
图4为本实用新型所述薄型开关实施例接触弹片与按柄配合结构示意图。
具体实施方式
下面将结合附图及实施例来对本实用新型作进一步详细说明。
如图1-4所示，本实施例中所述的薄型开关包括按柄1、底座2、中部设有圆形通孔的上盖3。底座2中部设有导柱21，导柱21周围 对应按柄1形状设按柄行程槽。弹簧5套于导柱21上，按柄1下方对应导柱设置导杆，按柄1通过导杆安装到套接有弹簧5的导柱21内。接触弹片4和固定端子6安装在底座上按柄的一侧，扭簧7也安装在底座上。按柄1对应接触弹片和扭簧分别设置相应的配合结构。所述底座2上边缘设有卡勾22及卡孔23，上盖3对应设置与之配合的卡孔31和插接柱32。底座2和上盖3通过卡柱卡孔扣合，将接触弹片4、弹簧5、固定端子6、扭簧7包容在内部。扣合后，按柄1上部从上盖的圆形通孔露出供按压，按柄1下部设有与上盖内顶壁配合防止按柄脱出的外凸沿13，同时接触弹片4的固定部也搭在该凸沿13上。
本实施例中，底座包括基础座体25，基础座体25配合圆柱形上盖3设置为圆柱形，其内配合圆柱形按柄1设供按柄1上下运动的行程槽。在基础座体25边缘延伸出的凹槽251，扭簧7安装于凹槽251内。扭簧7一端与底座固定，另一端伸出至按柄1侧边，由于扭簧距离安装在底座中部的按柄距离较远，扭簧的伸出段较长。按柄1侧壁设有突台12、导引斜面11，初始状态扭簧伸出段位于按柄1突台12的下方。按压按柄1，突台12下行下压扭簧7伸出段，下压到一定行程时，扭簧7脱离按柄突台沿导引斜面11向上回弹，击打到上盖顶壁发出声音。
本实施例中，固定端子6包括端子安装部61及与接触弹片4弹脚对应的端子接触部62，端子安装部61套接在底座的端子安装柱24上，并延伸出底座供外部线路连接。接触弹片4包括弹片接触部和弹 片安装部42，弹片接触部为弧形，其弧度与底座边缘弧度契合，弹片接触部一端头具有弹脚41，另一端头向下弯折延伸形成弹片安装部42，该安装部伸出底座供外部线路连接。安装时，弹片接触部和端子接触部均安装于底座边缘上，接触弹片的弹脚41位于固定端子接触部62上方。对应的按柄1侧壁设有与接触弹片配合的凸出的挂臂14。初始状态下，接触弹片的弹脚41的前段挂在按柄的挂臂14上与固定端子的接触部62分离；按柄被按下后，挂臂14下行释放弹脚，弹脚在自身弹力作用下回弹与固定端子接触实现开关导通。
本实施例中，将扭簧分别设置在底座的延伸槽内，扭簧远离底座中心处，使得扭簧伸出段尽量长，使得扭簧伸出段具有较长的弹力缓冲区，提高扭簧的使用寿命。
本实用新型未具体介绍的部分，均可采用本领域常用手段，在此不赘述。
上述实施例仅为本实用新型的较优的实现方式，其描述较为具体和详细，但并不能因此而理解为对本实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进，这些显而易见的替换形式均属于本实用新型的保护范围。

Claims (8)

  1. 一种带扭簧的薄型开关，包括按柄(1)、底座(2)、上盖(3)、接触弹片(4)和弹簧(5)、固定端子(6)，所述底座(2)中部设有一导柱(21)，弹簧(5)套于导柱(21)上，按柄(1)安装到套接有弹簧(5)的导柱(21)上，接触弹片(4)和固定端子(6)安装于底座上；上盖(3)扣合于底座(2)上将接触弹片和固定端子覆盖于其内，上盖(3)中部为通孔，按柄(1)上部由通孔穿出供按压，其特征在于，还包括扭簧(7)，所述扭簧安装于底座一凹槽(251)内，一端与底座固定，另一端伸出至按柄侧边；对应的按柄(1)侧壁设有突台(12)、导引斜面(11)，按柄(1)下行时释放接触弹片(4)同时通过突台(12)下压扭簧伸出段，下压到一定行程时，扭簧(7)脱离按柄沿导引斜面(11)向上回弹，击打到上盖顶壁发出声音。
  2. 根据权利要求1所述的带扭簧的薄型开关，其特征在于：所述底座包括基础座体(25)和从基础座体(25)边缘向远离底座导柱(21)方向延伸出的凹槽(251)，所述扭簧设于凹槽(251)内而使得扭簧伸出段尽量长。
  3. 根据权利要求1所述的带扭簧的薄型开关，其特征在于：所述接触弹片(4)包括弹片接触部和弹片安装部，弹片接触部为弧形，一端头设有弹脚(41)；所述弹脚位于固定端子上方，对应的按柄(1)侧壁设有与接触弹片配合的凸出的挂臂(14)；初始状态下，接触弹片的弹脚前段挂在按柄的挂臂上与固定端子分离，按柄被 按下后，挂臂下行释放弹脚，接触弹片在自身弹力作用下回弹使弹脚与固定端子接触实现开关导通。
  4. 根据权利要求3所述的带扭簧的薄型开关，其特征在于：所述弹片安装部由弹片接触部的另一端头向下弯折延伸而成，该弹片安装部伸出底座供外部线路连接。
  5. 根据权利要求3所述的带扭簧的薄型开关，其特征在于：所述固定端子(6)包括端子安装部(61)及与接触弹片(4)弹脚对应的端子接触部(62)，端子接触部(62)套接在底座的端子安装柱上，端子安装部(61)由端子接触部弯折延伸出底座供外部线路连接。
  6. 根据权利要求1所述的带扭簧的薄型开关，其特征在于：所述底座(2)上导柱(21)周围对应圆柱形按柄形状设按柄行程槽。
  7. 根据权利要求1所述的带扭簧的薄型开关，其特征在于：所述底座(2)上设有卡勾(22)及插接孔(23)，上盖(3)对应设置与之配合的卡孔(31)和插接柱(32)。
  8. 根据权利要求1所述的带扭簧的薄型开关，其特征在于：所述按柄(1)下部设有与上盖内顶壁配合防止按柄脱出并搭接接触弹片的外凸沿(13)。
PCT/CN2017/103130 2016-10-13 2017-09-25 一种带扭簧的薄型开关 WO2018133440A1 (zh)

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