WO2020103539A1 - 一种可变力按键 - Google Patents

一种可变力按键

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Publication number
WO2020103539A1
WO2020103539A1 PCT/CN2019/105038 CN2019105038W WO2020103539A1 WO 2020103539 A1 WO2020103539 A1 WO 2020103539A1 CN 2019105038 W CN2019105038 W CN 2019105038W WO 2020103539 A1 WO2020103539 A1 WO 2020103539A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnet
central shaft
housing
magnetic ring
bottom end
Prior art date
Application number
PCT/CN2019/105038
Other languages
English (en)
French (fr)
Inventor
刘宁
黎振东
Original Assignee
东莞璟阳电子科技有限公司
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 东莞璟阳电子科技有限公司 filed Critical 东莞璟阳电子科技有限公司
Priority to EP19886235.1A priority Critical patent/EP3886130B1/en
Publication of WO2020103539A1 publication Critical patent/WO2020103539A1/zh
Priority to US17/325,847 priority patent/US11410823B2/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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H13/10—Bases; Stationary contacts mounted thereon
    • 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
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/028—Tactile feedback alterable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/05—Tactile feedback electromechanical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle

Definitions

  • the invention relates to the field of keyboard accessories, in particular to a variable force button.
  • the keyboard is the most commonly used and main input device of the computer. English letters, numbers, and punctuation marks can be input into the computer by tapping the keyboard, so as to issue commands and input data to the computer.
  • the keyboard is divided into a mechanical keyboard, a membrane keyboard, a conductive silicone keyboard, and a capacitive keyboard. Among them, the mechanical keyboard has a strong sense of rhythm. The long-term use of the touch will not change and is loved by gamers.
  • the paragraph feeling and pressure of the mechanical keyboard mainly rely on the use of different axes to change the paragraph feeling, such as the commonly used four axes of black, red, green, and tea on the market.
  • the black axis has the strongest sense of paragraph; the red axis basically has no sense of paragraph; the green axis has a small sense of paragraph, but the level is obvious, with a clear rhythm sound; the tea axis has the same sense of paragraph as the green axis, but the level is not strong. If you want to feel different feels, users must buy mechanical keyboards with different color shafts. If you do not know your preferences, it is easy to buy a mechanical keyboard that is not suitable for you, which will cause users to repeatedly buy and waste costs. It is also impossible to define the sense of paragraph and strength of the mechanical axis according to your own preferences.
  • a magnetic key (publication number CN107785202A), which includes a housing and a center shaft body provided in the housing, a key cap holder is provided on the top of the center shaft body, and the center shaft body The bottom of the shaft extends into the housing, and after pressing the keycap base, the central axis body can move back and forth in the vertical direction in the base.
  • the central axis body is provided with a baffle plate that divides the central axis body into two sections ,
  • a first magnetic element is provided on the upper section of the central shaft body, and a second magnetic element movable up and down is provided under the coaxial of the first magnetic element, a lower portion of the central shaft body is provided with a return spring, and the housing
  • a third magnetic element is provided, and the third magnetic element is an energizing coil whose energizing current can be adjusted.
  • the first magnetic element is fixed on the upper section of the central shaft body, and the second magnetic element is a permanent magnetic element
  • the second magnetic element in the initial state, the second magnetic element is attracted to the first magnetic element by the magnetic force, and when the key is pressed, power is turned on
  • the third magnetic element is controlled by the current to give the second magnetic element a repulsive force opposite to the key press direction, and then the current energization direction is changed.
  • the magnetic force between the second magnetic element and the third magnetic element is greater than the first
  • the magnetic force between the magnetic element and the second magnetic element the second magnetic element moves toward the bottom along the axis body and strikes the baffle provided on the axis body, resulting in a sense of depression.
  • the present invention provides a variable force button, which can realize a variety of force changing methods, greatly improve the sense of paragraph of the button, and improve the user's experience. At the same time, by changing the current slightly, the key can be significantly changed Paragraph intensity.
  • a variable force button including a housing, a central shaft, a magnetic ring, and an electromagnet
  • the central shaft extends into the housing, and the top end of the central shaft is fixedly provided with A keycap base
  • a return spring is provided between the bottom end of the central shaft and the inner bottom surface of the housing
  • the central shaft can move back and forth in the vertical direction in the housing
  • the bottom end of the central shaft is also fixedly provided with a limiting member
  • the outer wall of the bottom end of the limiter is provided with a flange along the circumferential direction
  • the magnetic ring is sleeved on the outer wall of the limiter and is located at the upper end of the flange
  • the magnetic ring is a permanent magnet magnetized along the axial direction of the limiter
  • the electromagnet is arranged at the bottom inside the housing, and when the central axis moves downward, the electromagnet can penetrate into the limiter, and the current magnitude and direction of the electromagnet
  • a control circuit board for applying a control current to the electromagnet is fixedly provided on the bottom end of the housing, and a trigger component for triggering and controlling the control circuit board is provided on the control circuit board.
  • the downward movement of the central axis generates a trigger signal, the trigger assembly is connected to the input end of the control circuit board, and the control output end of the control circuit board is connected to the electromagnet.
  • the bottom end of the housing is provided with a through hole corresponding to the electromagnet.
  • the electromagnet passes through the through hole and is connected to the control circuit board.
  • the inner side of the housing is provided with a sliding groove along the vertical direction, a slider corresponding to the sliding groove is provided on the central shaft, and the slider is slidingly connected to the sliding groove.
  • the limiter is a plurality of circular arc blocks arranged in the form of a circumferential array.
  • the bottom end of the central shaft is provided with a guide post
  • the bottom end of the housing is provided with a guide sleeve corresponding to the guide post
  • the guide post is inserted into the guide sleeve
  • the reset The spring is sleeved on the surface of the guide post.
  • the housing includes a base and an upper cover.
  • a clamping block is provided on the outer side of the base, and a clamping slot corresponding to the clamping block is provided on the side of the upper cover.
  • the upper cover is fixedly connected to the base.
  • the bottom end of the central shaft is provided with a magnet, and the magnetic ring is magnetically attracted to the magnet.
  • the present invention also provides a variable force button, including a housing, a central shaft, a magnetic ring, and an electromagnet, the central shaft extends into the housing, and a keycap seat is fixedly arranged on the top of the central shaft, A return spring is provided between the bottom end of the central shaft and the inner bottom surface of the housing.
  • the central shaft can reciprocate in the vertical direction in the housing.
  • the bottom end of the central shaft is also fixedly provided with a limiting member.
  • the limiting position The inner wall of the bottom end of the member is provided with a flange along the circumferential direction, the magnetic ring is placed inside the limiter and located at the upper end of the flange, and the magnetic ring is a permanent magnet magnetized along the axial direction of the limiter, the electromagnet It is arranged at the bottom inside the casing, and when the central axis moves downward, the electromagnet can penetrate into the limiter, and the current magnitude and direction of the electromagnet can be adjusted.
  • the beneficial effect of the present invention is that the present invention adopts an electromagnet, because the magnetic permeability of the iron core of the electromagnet 4 is much larger than that of air, and the magnetic permeability of the air is about 1, while the magnetic permeability of the iron core used by the electromagnet can reach several thousand, and The size of the magnetic field generated by the coil is proportional to the magnetic permeability of the coil's magnetic field loop, so that a large magnetic force can be generated under the action of a small current, so that the repulsive force and suction force acting on the magnet also increase, which can effectively generate upward thrust and
  • the downward pulling force greatly improves the user's sense of paragraph sense; at the same time, because the magnetic ring is sleeved or set inside the limiter, when the keycap base is pressed down and moved, the electromagnet can penetrate inside the limiter, making The distance between the electromagnet and the magnetic ring can coincide or be far away, so that a variety of variable force control methods can be achieved.
  • the magnetic ring moves down the limiter due to gravity and then fits on the flange at the bottom of the limiter.
  • the central shaft drives the limiter down and the electromagnet
  • the electromagnet After being energized in the forward direction, the electromagnet generates a repulsive force on the magnetic ring, causing the magnetic ring to move upward along the stopper to hit the central axis, thereby generating an upward thrust to the central axis; after the electromagnet is reversely energized, the electromagnet generates a magnetic force on the magnetic ring , Make the magnetic ring move down quickly and hit the flange of the stopper to produce a sense of paragraph.
  • Embodiment 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention.
  • FIG. 3 is a schematic view of the structure of the base of the first embodiment of the present invention.
  • FIG. 4 is a schematic view of the structure of the central axis of the first embodiment of the present invention.
  • FIG. 6 is a schematic view of the structure of the central axis of the second embodiment of the present invention.
  • the present invention relates to a variable force button, including a housing 1, a central shaft 2, a magnetic ring 3, an electromagnet 4, the central shaft 2 extends into the housing 1, the central shaft 2
  • the top end is fixedly provided with a keycap base 23, and a return spring 5 is provided between the bottom end of the central shaft 2 and the inner bottom surface of the housing 1, the central shaft 2 can reciprocate in the vertical direction in the housing 1, the central shaft
  • the bottom end of 2 is also fixedly provided with a limiting member 6, the limiting member 6 can be set as a hollow cylinder, the outer wall of the bottom end of the limiting member 6 is provided with a flange 62 along the circumferential direction, and the magnetic ring 3 is sleeved on the limiting member
  • the outer wall of the positioning member 6 is located at the upper end of the flange 62, and the magnetic ring 3 is a permanent magnet magnetized along the axial direction of the limiting member 6, the electromagnet 4 is disposed at the bottom inside the housing 1,
  • the electromagnet can penetrate into the limiter, so that the distance between the electromagnet and the magnetic ring can coincide or be far away, so that Realize a variety of variable force control methods.
  • the magnetic ring 3 moves down along the stopper 6 due to gravity and then fits on the flange 62 at the bottom end of the stopper 6, so that the distance between the magnetic ring 3 and the electromagnet 4 becomes smaller.
  • the central shaft 2 drives the limiting member 6 downward, and after the electromagnet 4 is energized in the forward direction, the electromagnet 4 generates a repulsive force on the magnetic ring 3, causing the magnetic ring 3 to move upward along the limiting member 6
  • the movement hits the central shaft 2 to generate an upward thrust to the central shaft 2; after the electromagnet 4 is energized in the reverse direction, the electromagnet 4 generates a magnetic force on the magnetic ring 3, causing the magnetic ring 3 to move downward quickly and hit the convexity of the stopper 6
  • the edge 62 produces a sense of paragraph. Since both the thrust and the repulsive force are generated by the impact of the magnetic ring 3, the sense of paragraph will be very obvious, increasing the user's experience.
  • the electromagnet 4 is designed into a pancake shape, and the magnetic ring can follow the central axis 2 from the top of the electromagnet 4 to the bottom of the electromagnet 4.
  • a reverse current is applied to the electromagnet 4 to make the electromagnet 4 and the magnetic ring 2 generate a repulsive force.
  • the central shaft 2 drives the magnetic ring 3 downward, when the magnetic ring 3 The upward thrust is increased by passing through the electromagnet 4 until the center of the magnetic ring 3 coincides with the center of the electromagnet 4 and the repulsive force disappears.
  • the magnetic permeability of the iron core of the electromagnet 4 is much greater than that of air, the magnetic permeability of the air is about 1, and the magnetic permeability of the iron core used by the electromagnet can be up to several thousand, and the magnetic field generated by the coil is proportional to the magnetic permeability of the coil magnetic circuit. Proportionally, so that a large magnetic force can be generated under the action of a small current, so that the repulsive force and suction force acting on the magnet also increase, which can effectively generate upward pushing force and downward pulling force, greatly improving the user's sense of paragraph strength.
  • the middle shaft 2 When the middle shaft 2 moves down, it will send a trigger signal to the control circuit board 7 through the trigger component, so that the control circuit board 7 applies a forward or reverse control current to the electromagnet 4, so that the electromagnet 4 generates a magnetic force on the magnetic ring 3 or Repulsion.
  • the bottom end of the housing 1 is provided with a through hole 11 corresponding to the electromagnet 4.
  • the electromagnet 4 passes through the through hole 11 and is connected to the control circuit board 7.
  • the electromagnet 4 is directly passed through the through hole 11, which is convenient for welding the welding pin 41 of the electromagnet 4 and the control circuit board 7, compared with the design of the shrapnel and welding on the traditional casing 1
  • the connection method of the foot 41 is more convenient and firm in this embodiment.
  • the inner side of the housing 1 is provided with a slide slot 12 in the vertical direction
  • the central shaft 2 is provided with a slider 21 corresponding to the slide slot 12, and the slider 21 and the slide
  • the slot 12 is slidingly connected.
  • the sliding cooperation of the sliding block 21 and the sliding groove 12 provides a guiding function for the movement of the central shaft 2 and makes the movement of the central shaft 2 more stable and accurate.
  • the limiting member 6 is a plurality of circular arc blocks 61 arranged in the form of a circumferential array.
  • a plurality of circular arc blocks 61 arranged at intervals in the circumferential direction constitute the limiter 6, which can save the material of the limiter 6 and reduce the weight of the keycap base 23 at the same time.
  • the bottom end of the central shaft 2 is provided with a guide post 22, and the bottom end of the housing 1 is provided with a guide sleeve 17 corresponding to the guide post 22, and the guide post 22 is inserted into the In the guide sleeve 17, the return spring 5 is sleeved on the surface of the guide post 22.
  • the guide post 22 moves along the guide sleeve 17 to ensure that the elastic force of the return spring 5 is along the vertical direction, so that the return of the central shaft 2 is smooth and accurate.
  • the housing 1 includes a base 13 and an upper cover 14.
  • a locking block 15 is provided on the outer side of the base 13, and a locking slot 16 corresponding to the locking block 15 is provided on the side of the upper cover 14 ,
  • the clamping block 15 is clamped in the clamping slot 16, and the upper cover 14 is fixedly connected to the base 13.
  • the bottom end of the central shaft 2 is provided with a magnet, and the magnetic ring 3 is magnetically attracted to the magnet.
  • the magnetic ring 3 is held at the bottom of the center shaft 3 due to the suction of the magnet of the bottom of the center shaft 2.
  • the center shaft 2 drives the stopper 7 downward, and the electromagnet 4 is energized in the forward direction
  • the electromagnet 4 generates a repulsive force on the magnetic ring 3, so that the magnetic ring 3 pushes the central shaft 2 upward to generate a thrust, and then applies a reverse current to the electromagnet 4 to make the magnetic ring 3 and the electromagnet 4 attract, so that the magnetic ring 3.
  • the rapid downward movement hits the flange 62 to produce a downward sense of paragraph.
  • the present invention also provides a variable force button, including a housing 1, a central shaft 2, a magnetic ring 3, and an electromagnet 4, the central shaft 2 extends into the housing 1 Inside, the top end of the central shaft 2 is fixedly provided with a keycap base 23, and a return spring 5 is provided between the bottom end of the central shaft 2 and the inner bottom surface of the housing 1, and the central shaft 2 can reciprocate in the vertical direction in the housing 1 Moving, the bottom end of the central shaft 2 is also fixedly provided with a limiting member 6, the limiting member 6 can be set as a hollow cylinder, the inner wall of the bottom end of the limiting member 6 is provided with a flange 62 along the circumferential direction, the magnetic ring 3 It is arranged inside the limiter 6 and is located at the upper end of the flange 62, and the magnetic ring 3 is a permanent magnet magnetized in the axial direction of the limiter 6, the electromagnet 4 is provided at the bottom inside the housing

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Push-Button Switches (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

一种可变力按键，包括外壳、中轴、磁环、电磁铁，中轴伸入外壳内，中轴的顶端固定设置有键帽座，中轴在外壳内可沿竖直方向往复移动，中轴的底端固定设置有限位件，限位件底端的外壁或内壁设有凸缘，磁环套接在限位件外壁或安置在限位件内部并位于凸缘上端，电磁铁设置在外壳内的底部，且中轴下行移动时，电磁铁可穿入限位件内部，电磁铁的电流大小和方向均能调节。电磁铁正向通电后，电磁铁对磁环产生斥力，使磁环向上运动撞击中轴；电磁铁反向通电后，电磁铁对磁环产生磁力，使磁环向下运动撞击限位件凸缘产生段落感，电磁铁可穿入限位件内部，使得磁环和电磁铁间距非常小，电磁铁电流微小的改变，即可明显改变按键的段落感强度。

Description

一种可变力按键 技术领域
本发明涉及键盘配件领域，尤指一种可变力按键。
背景技术
键盘是计算机最常用也是最主要的输入设备，通过敲击键盘可以将英文字母、数字、标点符号等输入到计算机中，从而向计算机发出命令、输入数据等。键盘分为机械键盘、薄膜键盘、导电硅胶键盘、电容键盘，其中以机械键盘节奏感强，长期使用手感不会改变深受游戏玩家喜爱。
目前，机械键盘段落感和压力主要靠采用不同轴来改变段落感，如市面上常用的黑、红、青、茶四种轴。黑轴段落感最强；红轴基本上没有段落感；青轴段落感比较小，但层次明显，带有明显的节奏声音；茶轴段落感与青轴差不多，只是层次感不强。如果想感受不同的手感，用户必须购买不同颜色轴的机械键盘。如果不清楚自己的喜好很容易购买不适合自己的机械键盘，从而造成用户重复购买，浪费成本。同样也不能按照自己喜好定义机械轴的段落感和力度。
为解决上述问题，申请人公开了一种磁力式按键(公布号CN107785202A)，包括外壳和设于外壳中的中轴本体，所述中轴本体的顶部设有键帽座，所述中轴本体的底部伸入外壳内，按压键帽座后使中轴本体在底座内能够沿竖直方向往复移动，其特征在于：所述中轴本体上设有将中轴本体区分为两段的挡片，在中轴本体的上段设有第一磁性元件，位于第一磁性元件的同轴下设有可上下运动的第二磁性元件，所述中轴本体的下段设有复位弹簧，所述外壳内设有第三磁性元件，所述第三磁性元件为通电电流大小能够调节的通电线圈。
由于第一磁性元件是固定在中轴本体的上段，第二磁性元件是永磁性元件，因此在起始状态下第二磁性元件通过磁力作用吸合在第一磁性元件上，当下压按键触发通电线圈导通时，通过控制电流使第三磁性元件给第二磁性元件一个与按键按压方向相反的斥力，随后改变电流通电方向，第二磁性元件和第三磁性元件之间产生磁力并大于第一磁性元件与第二磁性元件之间的磁力，第二磁 性元件延中轴本体向底部运动并撞击设在中轴本体上的挡板，产生下压段落感。
在实际操作中发现，由于第二磁性元件是吸合在第一磁性元件上，第二磁性元件与第三磁性元件间的距离是很远的，则第三磁性元件给第二磁性元件的斥力实际上是很小，同时由于采用线圈，产生的磁场比较弱，因此产生的段落感不强，降低了用户的体验感，需要增大好几倍或数十倍的电流给第三磁性元件才能提高段落感，使用不方便；此外由于磁铁和弹簧穿过线圈中心，线圈也无法增加铁心来增强其效率。
发明内容
为解决上述问题，本发明提供一种可变力按键，可实现多种变力方式，大幅提高按键的段落感，提高用户的体验感，同时通过对电流微小的改变，即可明显改变按键的段落感强度。
为实现上述目的，本发明采用的技术方案是：一种可变力按键，包括外壳、中轴、磁环、电磁铁，所述中轴伸入所述外壳内，中轴的顶端固定设置有键帽座，所述中轴的底端和外壳的内底面之间设有复位弹簧，中轴在外壳内可沿竖直方向往复移动，所述中轴的底端还固定设置有限位件，所述限位件底端的外壁沿周向设有凸缘，所述磁环套接在所述限位件外壁并位于所述凸缘上端，且磁环为沿限位件轴向充磁的永磁体，所述电磁铁设置在外壳内的底部，且所述中轴下行移动时，所述电磁铁可穿入所述限位件内部，所述电磁铁的电流大小和方向均能调节。
具体地，所述外壳的底端固定设置有用于对所述电磁铁施加控制电流的控制电路板，所述控制电路板上设有对控制电路板进行触发控制的触发组件，所述触发组件通过中轴下行移动产生触发信号，所述触发组件与控制电路板的输入端连接，所述控制电路板的控制输出端与电磁铁连接。
具体地，所述外壳的底端设有与所述电磁铁对应的通孔，所述电磁铁穿过所述通孔并与所述控制电路板连接。
具体地，所述外壳的内侧面沿竖直方向设有滑槽，所述中轴上设有与滑槽对应的滑块，且所述滑块与所述滑槽滑动连接。
具体地，所述限位件是以圆周阵列形式排布的若干圆弧块。
具体地，所述中轴的底端设有导柱，所述外壳的底端设有与所述导柱对应 的导套，所述导柱插接于所述导套内，且所述复位弹簧套接于所述导柱表面。
具体地，所述外壳包括底座和上盖，所述底座的外侧面设有卡块，所述上盖的侧面设有与所述卡块对应的卡槽，通过所述卡块卡接在所述卡槽内，所述上盖与所述底座固定连接。
具体地，所述中轴的底端设置有磁体，所述磁环磁吸在磁体上。
为实现上述目的，本发明还提供一种可变力按键，包括外壳、中轴、磁环、电磁铁，所述中轴伸入所述外壳内，中轴的顶端固定设置有键帽座，所述中轴的底端和外壳的内底面之间设有复位弹簧，中轴在外壳内可沿竖直方向往复移动，所述中轴的底端还固定设置有限位件，所述限位件底端的内壁沿周向设有凸缘，所述磁环安置在所述限位件内部并位于所述凸缘上端，且磁环为沿限位件轴向充磁的永磁体，所述电磁铁设置在外壳内的底部，且所述中轴下行移动时，所述电磁铁可穿入所述限位件内部，所述电磁铁的电流大小和方向均能调节。
本发明的有益效果在于：本发明通过采用电磁铁，由于电磁铁4的铁心导磁率远远大于空气，空气的磁导率约为1，而电磁铁所用铁心的导磁率可以到几千，而线圈产生的磁场大小与线圈磁场回路的磁导率成正比，从而在很小的电流作用下可以产生很大的磁力，从而作用到磁铁上的斥力和吸力也增加，可以有效产生向上的推力和向下的拉力，大大改善用户的段落感强度；同时由于磁环套接或设置在限位件内部，在键帽座受压下移时，电磁铁可穿入所述限位件内部，使得电磁铁和磁环的距离可以重合或者远离，从而可实现多种的变力控制方式。
在自然状态下，磁环由于重力作用沿限位件下移后贴合在限位件底端的凸缘上，当施加一个压力到键帽座，中轴带动限位件向下运动，电磁铁正向通电后，电磁铁对磁环产生斥力，使磁环沿限位件向上运动撞击中轴，从而给中轴产生一个向上的推力；电磁铁反向通电后，电磁铁对磁环产生磁力，使磁环迅速向下运动撞击限位件的凸缘产生段落感。由于推力是通过磁环撞击产生的，因此段落感会非常的明显，增加用户的体验感，且电磁铁可穿入限位件内部，使得磁环和电磁铁间距非常小，通过对电磁铁的电流进行微小的改变，即可明 显改变按键的段落感强度。
附图说明
图1是本发明实施例一的整体结构示意图；
图2是本发明实施例一的零件***图；
图3是本发明实施例一的底座结构示意图；
图4是本发明实施例一的中轴结构示意图；
图5是本发明实施例二的零件***图；
图6是本发明实施例二的中轴结构示意图。
附图标号说明：1-外壳；2-中轴；3-磁环；4-电磁铁；5-复位弹簧；6-限位件；7-控制电路板；11-通孔；12-滑槽；13-底座；14-上盖；15-卡块；16-卡槽；17-导套；21-滑块；22-导柱；23-键帽座；41-焊脚；61-圆弧块；62-凸缘。
具体实施方式
实施例一
请参阅图1-4，本发明关于一种可变力按键，包括外壳1、中轴2、磁环3、电磁铁4，所述中轴2伸入所述外壳1内，中轴2的顶端固定设置有键帽座23，所述中轴2的底端和外壳1的内底面之间设有复位弹簧5，中轴2在外壳1内可沿竖直方向往复移动，所述中轴2的底端还固定设置有限位件6，限位件6可以设置成空心圆柱体，所述限位件6底端的外壁沿周向设有凸缘62，所述磁环3套接在所述限位件6外壁并位于所述凸缘62上端，且磁环3为沿限位件6轴向充磁的永磁体，所述电磁铁4设置在外壳1内的底部，且所述中轴2下行移动时，所述电磁铁4可穿入所述限位件6内部，所述电磁铁4的电流大小和方向均能调节。
由于磁环套接或设置在限位件内部，在键帽座受压下移时，电磁铁可穿入所述限位件内部，使得电磁铁和磁环的距离可以重合或者远离，从而可实现多种的变力控制方式。
下面对几种控制方式作说明。
(1)在自然状态下，磁环3由于重力作用沿限位件6下移后贴合在限位件 6底端的凸缘62上，使得磁环3和电磁铁4的距离变小。
当施加一个压力到键帽座23，中轴2带动限位件6向下运动，电磁铁4正向通电后，电磁铁4对磁环3产生斥力，使磁环3沿限位件6向上运动撞击中轴2，从而给中轴2产生一个向上的推力；电磁铁4反向通电后，电磁铁4对磁环3产生磁力，使磁环3迅速向下运动撞击限位件6的凸缘62产生段落感，由于推力和斥力都是是通过磁环3撞击产生的，因此段落感会非常的明显，增加用户的体验感。
(2)在自然状态下，施加一个小电流给电磁铁4，使其对磁环3产生一个斥力，使磁环3保持在中轴2底部，当施加一个压力到键帽座23，中轴2带限位件6向下运动，电磁铁4加大斥力电流，电磁铁4对磁环3产生突变斥力，使磁环3推动中轴2向上产生一个推力，然后再施加一个反向电流给电磁铁使磁铁4与磁环3相吸，使磁环3迅速向下运动撞击凸缘62产生向下的段落感。改变每个阶段的电流大小就可以控制各阶段力度，实现不同的手感。
(3)电磁铁4设计成薄饼状，磁环可以从电磁铁4上面跟随中轴2运动到电磁铁4下面。这默认情况下，给电磁铁4施加一个反向电流，使电磁铁4与磁环2产生斥力，当施加一个压力到键帽座23，中轴2带动磁环3向下运动，当磁环3靠经电磁铁4使向上的推力增加，直到磁环3中心与电磁铁4中心重合，斥力消失。当中轴2推动磁环3继续向下运动时，磁环3受到电磁铁4向下的斥力推动磁环3迅速向下运动产生段落感。这种方式的控制方法和控制电路比较简单。
由于电磁铁4的铁心导磁率远远大于空气，空气的磁导率约为1，而电磁铁所用铁心的导磁率可以到几千，而线圈产生的磁场大小与线圈磁场回路的磁导率成正比，从而在很小的电流作用下可以产生很大的磁力，从而作用到磁铁上的斥力和吸力也增加，可以有效产生向上的推力和向下的拉力，大大改善用户的段落感强度。
中轴2下移时会通过触发组件向控制电路板7发射触发信号，使控制电路板7对电磁铁4施加正向或反向的控制电流，从而使电磁铁4对磁环3产生磁力或斥力。
本实施例中，所述外壳1的底端设有与所述电磁铁4对应的通孔11，所述电磁铁4穿过所述通孔11并与所述控制电路板7连接。
通过在外壳1底端设计通孔11，让电磁铁4直接穿过通孔11，方便将电磁铁4的焊脚41与控制电路板7进行焊接，相比于传统外壳1上设计弹片和焊脚41的对接方式，本实施例的连接方式更加方便且牢固。
本实施例中，所述外壳1的内侧面沿竖直方向设有滑槽12，所述中轴2上设有与滑槽12对应的滑块21，且所述滑块21与所述滑槽12滑动连接。
滑块21与滑槽12的滑动配合，为中轴2的移动提供导向作用，使中轴2的移动更加平稳准确。
本实施例中，所述限位件6是以圆周阵列形式排布的若干圆弧块61。
通过若干沿圆周方向间距排布的圆弧块61组成限位件6，可以节省限位件6的材料，同时减轻键帽座23的重量。
本实施例中，所述中轴2的底端设有导柱22，所述外壳1的底端设有与所述导柱22对应的导套17，所述导柱22插接于所述导套17内，且所述复位弹簧5套接于所述导柱22表面。
通过导柱22沿导套17移动，保证复位弹簧5的弹力作用是沿着竖直方向的，使中轴2的复位平稳准确。
本实施例中，所述外壳1包括底座13和上盖14，所述底座13的外侧面设有卡块15，所述上盖14的侧面设有与所述卡块15对应的卡槽16，通过所述卡块15卡接在所述卡槽16内，所述上盖14与所述底座13固定连接。
通过卡块15与卡槽16的卡接，实现上盖14与底座13的可拆卸连接，方便进行拆修和更换零件。
本实施例中，中轴2的底端设置有磁体，所述磁环3磁吸在磁体上。在自然状态下，磁环3由于中轴2底部磁体吸力保持的中轴3底部，当施加一个压力到键帽座23，中轴2带动限位件7向下运动，电磁铁4正向通电后，电磁铁4对磁环3产生斥力，使磁环3推动中轴2向上产生一个推力，然后再施加一个反向电流给电磁铁4使磁环3与电磁铁4相吸，使磁环3迅速向下运动撞击凸缘62产生向下的段落感。
实施例二
请参阅图5-6，为实现上述目的，本发明还提供一种可变力按键，包括外壳1、中轴2、磁环3、电磁铁4，所述中轴2伸入所述外壳1内，中轴2的顶端固定设置有键帽座23，所述中轴2的底端和外壳1的内底面之间设有复位弹簧5， 中轴2在外壳1内可沿竖直方向往复移动，所述中轴2的底端还固定设置有限位件6，限位件6可以设置成空心圆柱体，所述限位件6底端的内壁沿周向设有凸缘62，所述磁环3安置在所述限位件6内部并位于所述凸缘62上端，且磁环3为沿限位件6轴向充磁的永磁体，所述电磁铁4设置在外壳1内的底部，且所述中轴2下行移动时，所述电磁铁4可穿入所述限位件6内部，所述电磁铁4的电流大小和方向均能调节。
以上实施方式仅仅是对本发明的优选实施方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通工程技术人员对本发明的技术方案作出的各种变形和改进，均应落入本发明的权利要求书确定的保护范围内。

Claims (8)

  1. 一种可变力按键，其特征在于：包括外壳、中轴、磁环、电磁铁，所述中轴伸入所述外壳内，中轴的顶端固定设置有键帽座，所述中轴的底端和外壳的内底面之间设有复位弹簧，中轴在外壳内可沿竖直方向往复移动，所述中轴的底端还固定设置有限位件，所述限位件底端的外壁沿周向设有凸缘，所述磁环套接在所述限位件外壁并位于所述凸缘上端，或者所述限位件底端的内壁沿周向设有凸缘，所述磁环安置在所述限位件内部并位于所述凸缘上端，且磁环为沿限位件轴向充磁的永磁体，所述电磁铁设置在外壳内的底部，且所述中轴下行移动时，所述电磁铁可穿入所述限位件内部，所述电磁铁的电流大小和方向均能调节。
  2. 根据权利要求1所述的可变力按键，其特征在于：所述外壳的底端固定设置有用于对所述电磁铁施加控制电流的控制电路板，所述控制电路板上设有对控制电路板进行触发控制的触发组件，所述触发组件通过中轴下行移动产生触发信号，所述触发组件与控制电路板的输入端连接，所述控制电路板的控制输出端与电磁铁连接。
  3. 根据权利要求2所述的可变力按键，其特征在于：所述外壳的底端设有与所述电磁铁对应的通孔，所述电磁铁穿过所述通孔并与所述控制电路板连接。
  4. 根据权利要求1所述的可变力按键，其特征在于：所述外壳的内侧面沿竖直方向设有滑槽，所述中轴上设有与滑槽对应的滑块，且所述滑块与所述滑槽滑动连接。
  5. 根据权利要求1所述的可变力按键，其特征在于：所述限位件是以圆周阵列形式排布的若干圆弧块。
  6. 根据权利要求1所述的可变力按键，其特征在于：所述中轴的底端设有导柱，所述外壳的底端设有与所述导柱对应的导套，所述导柱插接于所述导套内，且所述复位弹簧套接于所述导柱表面。
  7. 根据权利要求1-6任一项所述的可变力按键，其特征在于：所述外壳包括底座和上盖，所述底座的外侧面设有卡块，所述上盖的侧面设有与所述卡块 对应的卡槽，通过所述卡块卡接在所述卡槽内，所述上盖与所述底座固定连接。
  8. 根据权利要求7所述的可变力按键，其特征在于：所述中轴的底端设置有磁体，所述磁环磁吸在磁体上。
PCT/CN2019/105038 2018-11-20 2019-09-10 一种可变力按键 WO2020103539A1 (zh)

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EP3886130A4 (en) 2022-01-05
EP3886130B1 (en) 2022-10-26
CN110098078A (zh) 2019-08-06
CN110098078B (zh) 2024-05-03
US20210343487A1 (en) 2021-11-04
US11410823B2 (en) 2022-08-09

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