Ultrathin long-stroke stable Hall key and keyboard thereof

Abstract

The utility model discloses an ultrathin long-stroke stable Hall key, which is used for triggering a Hall element arranged on a PCB (Printed Circuit Board) to generate a signal, and comprises a key seat, a magnetic block, a reset elastic piece, a key cap, a shear shank and a pressing sliding block, the reset elastic piece and the shear shank are arranged between the pressing sliding block and the key seat, the key cap is arranged on the pressing sliding block, and the magnetic block is arranged on the pressing sliding block. The magnetic block is installed on the pressing sliding block, and the key base can guide sliding of the pressing sliding block. A shear shank structure and a reset elastic piece are adopted as a reset supporting structure, a magnetic block is arranged on a pressing sliding block, shaking of the magnetic block in the pressing process is avoided, it is guaranteed that the magnetic block stably moves up and down, and stable triggering of signals is achieved; in addition, the annular guide table serves as a guide device, and the accuracy and stability of the pressing sliding block in the moving process are guaranteed; according to the scheme, the ultra-thin structure is guaranteed, meanwhile, long-stroke stable triggering of signals is achieved, and better use experience is brought to a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of key, concretely relates to a kind of ultra-thin long-stroke stable hall key and its keyboard. BACKGROUND

[0002] With the increasing popularity of electronic devices and the continuous progress of technology, the requirements for keys are also getting higher and higher. Hall key is outstanding in waterproofness, dustproofness, service life and stability due to its non-contact working principle of triggering signal using magnetic field.

[0003] However, the existing hall key is limited in design by space, resulting in a short stroke of the key, which is difficult to maintain stable performance in ultra-thin form, especially after long-term use, which is prone to problems such as loose key, poor hand feeling, etc. This not only affects the tactile feedback of the key, but also may cause the key to fail or be triggered by mistake, reducing the overall reliability of the device. SUMMARY

[0004] To solve the above problems, the utility model aims to provide an ultra-thin long-stroke stable hall key.

[0005] To achieve this technical purpose, the utility model provides a kind of ultra-thin long-stroke stable hall key, which is used to trigger the hall element arranged on the PCB to generate signal, and includes a key seat, a magnetic block, a reset elastic element and a key cap, further comprising a scissor frame and a pressing slider, the reset elastic element and the scissor frame are arranged between the pressing slider and the key seat, the key cap is installed on the pressing slider, the magnetic block is installed on the pressing slider, and the key seat can guide the sliding of the pressing slider. When the key cap is pressed, the magnetic block can move up and down relative to the key seat with the sliding of the pressing slider.

[0006] As a preferred, the side of the pressing slider towards the key seat direction is configured as a hollow structure, the middle part of the hollow structure of the pressing slider extends a hollow cylinder towards the key seat, and the magnetic block is installed in the hollow cylinder.

[0007] As a preferred, the part of the key seat corresponding to the hollow cylinder extends a ring-shaped guide table towards the pressing slider, the outer diameter of the hollow cylinder matches the inner diameter of the ring-shaped guide table, and pressing the key cap can make the hollow cylinder of the pressing slider inserted into the ring-shaped guide table for guided movement.

[0008] As a preferred, the hollow cylinder is surrounded by a wedge-shaped structure around the root combined with the pressing slider, one end of the wedge-shaped structure is high and extends towards the key cap direction, and the downward movement of the pressing slider can make the wedge-shaped structure wedge into and abut against the top inner wall of the ring-shaped guide table.

[0009] As preferred, the bottom of the hollow cylinder is configured as a tapered structure with a constricted bottom, and the bottom of the annular guide table is configured as a tapered surface with a constricted inner diameter, and the minimum diameter of the tapered structure is smaller than the minimum diameter of the tapered surface.

[0010] As preferred, the bottom of the hollow cylinder is configured as a tapered structure with a constricted bottom, and the bottom of the annular guide table is configured as a tapered surface with a constricted inner diameter, and the minimum diameter of the tapered structure is smaller than the minimum diameter of the tapered surface.

[0011] As preferred, the bottom of the hollow cylinder is configured as a tapered structure with a constricted bottom, and the bottom of the annular guide table is configured as a tapered surface with a constricted inner diameter, and the minimum diameter of the tapered structure is smaller than the minimum diameter of the tapered surface.

[0012] As preferred, the top end and the bottom end of the scissor frame are respectively extended with a pivot column, the key seat is provided with a first pivot slot and a second pivot slot matched with the bottom end of the scissor frame, and the pressing slider is provided with a first pivot slot and a second pivot slot matched with the top end of the scissor frame.

[0013] As preferred, the key further comprises a cover plate, the cover plate is provided with a hollow structure capable of accommodating the key seat in the middle, the cover plate is provided with a limiting hole on the side of the hollow structure, the key seat is provided with an upwardly raised protrusion at a position corresponding to the limiting hole, and the cover plate is installed on the PCB through the combination of the limiting hole and the protrusion of the key seat.

[0014] As preferred, the bottom of the key cap is provided with a plurality of hooks, the top of the pressing slider is provided with a hook slot corresponding to each hook, and the key cap and the pressing slider are combined through the hooks and the hook slots.

[0015] The utility model further provides a scheme: a keyboard has more than one of the keys described in the above, the keys are assembled on the bottom plate, and the position of each key on the bottom plate is one-to-one pasted with a Hall element.

[0016] The utility model discloses the beneficial effect is: adopt the scissor frame structure and reset elastic piece as reset support structure, set up the magnetic block on the pressing slider, avoided the magnetic block in the pressing process and the shake, guaranteed the stable up and down movement of magnetic block, realized the stable trigger of signal, in addition, the annular guide table as the guide device, ensured the accuracy and stability of the pressing slider in the moving process, and the scheme has realized the long stroke stable trigger of signal while guaranteeing the ultrathin structure, and better use experience is brought to the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the explosion drawing of the utility model;

[0019] Figure 3 It is the structural schematic diagram of the pressing slider in the utility model;

[0020] Figure 4 Schematic diagram of the bottom structure of the keycap in the present invention;

[0021] Figure 5 It is a structural diagram of the key base in the utility model;

[0022] Figure 6 This is a structural diagram of the key base and the cover plate in the present invention;

[0023] Figure 7 This is a top view of the key base in the utility model;

[0024] Figure 8 Schematic diagram of the bottom structure of the keycap in the present invention;

[0025] Figure 9 Schematic diagram of the structure of the cross keycap in the present invention;

[0026] Figure 10 This is a cross-sectional view of the pressing slider of the utility model after being pressed;

[0027] Figure 11 Schematic diagram of the bottom structure of the pressing slider in the utility model.

[0028] In the figure: 1. keycap; 101. hook; 2. push slider; 201. hollow cylinder; 202. wedge-shaped structure; 203. frustum structure; 204. through hole; 205. hook groove; 3. magnetic block; 4. reset elastic member; 5. scissors frame; 501. pivot column; 6. key base; 601. annular guide platform; 602. inclined table; 603. opening; 604. bump; 7. cover plate; 701. limit hole; 8. Hall element; 9. PCB board; 10. first pivot groove; 11. second pivot groove. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. To provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; the following embodiments are part of the present invention; any other embodiments obtained based on this application without creative effort are within the scope of protection of the present invention.

[0030] In the following embodiments, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "top / bottom," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the clear description of the embodiments. They do not indicate or imply that the devices or components referred to must have a specific orientation and should not be construed as limitations on the present application. Furthermore, the terms "first" and "second" in the embodiments are used solely for descriptive purposes and do not indicate or imply relative importance.

[0031] like Figure 1-11 As shown, the specific embodiment of the present invention is an ultra-thin, long-stroke, stable Hall effect key, which is used to trigger a Hall effect element 8 disposed on a PCB to generate a signal. The Hall effect key of the present application includes a key base 6, a magnet 3, a reset elastic member 4, and a key cap 1, as well as a scissor frame 5 and a pressing slider 2.

[0032] The key cap 1 of the present application can be a normal key cap 1 or a cross key cap 1 (such as Figure 11 As shown), a plurality of hooks 101 are provided at the bottom of the keycap 1, and a hook groove 205 is provided at the top of the press slider 2 corresponding to each hook 101. The keycap 1 and the press slider 2 are combined through the hooks 101 and the hook groove 205, so that the keycap 1 is installed on the press slider 2.

[0033] The present application adopts a scissor frame 5 and a reset elastic member 4 as a reset support structure, which can reduce the thickness of the key compared to general keys. The reset elastic member 4 and the scissor frame 5 are both arranged between the pressing slider 2 and the key base 6, and the magnetic block 3 is installed on the pressing slider 2. When the keycap 1 is pressed, the key base 6 can guide the sliding of the pressing slider 2, and the magnetic block 3 can move up and down relative to the key base 6 as the pressing slider 2 slides. The movement of the pressing slider 2 is guided by the scissor frame 5. When the key is pressed, the pressing slider 2 slides along the set track. In this process, the scissor frame 5 provides stable support and guidance, so that the movement of the pressing slider 2 is more stable and controllable. At the same time, the mechanical characteristics of the scissor frame 5 make the force amplified to a certain extent during the transmission process, thereby further increasing the pressing stroke of the key, so that the magnetic block 3 has a larger trigger signal stroke.

[0034] As the push slider 2 moves downward, the magnet 3 mounted on it gradually approaches the Hall effect element 8 mounted on the PCB. When the magnetic field between the magnet 3 and the Hall effect element 8 changes to a certain level, the Hall effect element 8 senses this change and generates a corresponding electrical signal. This signal is recognized by the system as a key trigger signal, which is used to execute the corresponding operation.

[0035] When the user releases keycap 1, resilient element 4 resets, pushing slider 2 and magnet 3 upward until they return to their initial positions. During this process, magnet 3 gradually moves away from Hall effect element 8 until its magnetic field no longer affects the element, thus ceasing signal generation.

[0036] In order to ensure the stability of the magnet 3, the side of the pressing slider 2 facing the key base 6 is constructed as a hollow structure, so that there is enough space inside the hollow structure to install the magnet 3. Specifically, a hollow cylinder 201 extends from the middle of the hollow structure of the pressing slider 2 toward the key base 6. There is a magnetic capsule inside the hollow cylinder 201 for installing the magnet 3, so that the magnet 3 can remain stably fixed on the pressing slider 2 during movement, effectively reducing the shaking of the magnet 3 during movement, thereby improving the accuracy of signal triggering.

[0037] The sliding guidance of the key base 6 for the pressing slider 2 is also reflected in the fact that an annular guide platform 601 extends toward the pressing slider 2 from the part of the key base 6 corresponding to the hollow cylinder 201. The outer diameter of the hollow cylinder 201 matches the inner diameter of the annular guide platform 601. The annular guide platform 601 provides precise guidance for the hollow cylinder 201 of the pressing slider 2. Pressing the keycap 1 can make the hollow cylinder 201 of the pressing slider 2 be inserted into the annular guide platform 601 for guiding movement, thereby ensuring the stability and guidance of the pressing slider 2 during movement.

[0038] To further optimize the stable guidance and support of the key, a wedge-shaped structure 202 is formed around the base of the hollow cylinder 201 where it meets the push slider 2. The higher end of the wedge-shaped structure 202 faces the keycap 1. As the push slider 2 moves downward, the wedge-shaped structure 202 wedges into and abuts the top of the annular guide platform 601. When the push slider 2 moves downward to a certain point, the wedge-shaped structure 202 abuts the top inner wall of the annular guide platform 601. The wedge-shaped structure 202 acts as a limiter for the downward movement of the push slider 2, preventing excessive pressing. It also provides a certain cushioning effect, reducing the impact force on the annular guide platform 601 when the key bottoms out.

[0039] In addition, the bottom of the hollow cylinder 201 is constructed as a contracted frustum structure 203, and the bottom of the annular guide platform 601 is constructed with an inclined table surface 602 with a contracted inner diameter. The minimum diameter of the frustum structure 203 is smaller than the minimum diameter of the inclined table surface 602, so that when the frustum structure 203 descends to a certain extent, the frustum structure 203 can cooperate with the inclined table surface 602 at the bottom of the annular guide platform 601. The design of the contracted inner diameter of the inclined table surface 602 matches the frustum structure 203 at the bottom of the hollow cylinder 201, ensuring that the two can fit tightly when in contact, providing stable support, and preventing the button from shaking or loosening at the bottom due to the influence of the reset part.

[0040] To better enable the Hall element 8 to receive the magnetic lines from the magnet 3, a through-hole 204 is provided at the bottom of the hollow cylinder 201. This through-hole 204 allows magnetic field lines to pass through the interior of the hollow cylinder 201, thereby affecting the Hall element 8 located at the opening 603 at the bottom of the annular guide platform 601. When the magnet 3 moves with the push slider 2, its magnetic field interacts with the Hall element 8 through the through-hole 204. The bottom of the annular guide platform 601 has an opening 603 or a blind hole capable of accommodating the Hall element 8, allowing the Hall element 8 to be located below the magnet 3.

[0041] In order to further ensure the stable resetting of the key, the present application adopts a spring as the resetting elastic member 4, and the spring is arranged between the hollow cylinder 201 and the annular guide platform 601 to ensure the stable installation of the spring. In order to ensure the smooth up and down movement of the scissors frame 5, the top and bottom ends of the scissors frame 5 are respectively extended with pivot columns 501, the key base 6 is provided with a first pivot groove 10 and a second pivot groove 11 that match the bottom end of the scissors frame 5, and the pressing slider 2 is provided with a first pivot groove 10 and a second pivot groove 11 that match the top end of the scissors frame 5 to limit the range of motion of the scissors frame 5. When the key is pressed, the two arms of the scissors frame 5 will move relative to each other. This movement mode can more effectively convert the pressing external force into the stroke of the key. Compared with the traditional single-component structure, the design of the scissors frame 5 can make the key produce a longer stroke under the same pressing force and can maintain a stable movement state.

[0042] The key in this specific embodiment also includes a cover plate 7, the middle of the cover plate 7 is a hollow structure that can accommodate the key base 6, a limiting hole 701 is provided on the edge of the hollow structure of the cover plate 7, and an upward-raised protrusion 604 is provided at the position corresponding to the limiting hole 701 on the key base 6. The cover plate 7 is installed on the PCB board through the limiting hole 701 and the protrusion 604 of the key base 6. The cooperation between the limiting hole 701 and the protrusion 604 prevents the key base 6 from moving when the key is pressed.

[0043] The present invention also provides a solution: a keyboard having a plurality of keys as described in any one of the above items, the keys being assembled on a base plate, and a Hall element 8 being patched one by one at a position on the base plate corresponding to each key.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent replacements and improvements made to the above embodiments based on the technical essence of the present invention should be included in the scope of protection of the technical solution of the present invention.

Claims

1. An ultra-thin, long-stroke, stable Hall effect key, used to trigger a Hall effect element disposed on a PCB to generate a signal, comprising a key base, a magnetic block, a reset elastic member, and a key cap, characterized in that: It also includes a scissor frame and a pressing slider, the reset elastic member and the scissor frame are both arranged between the pressing slider and the key base, the key cap is installed on the pressing slider, the magnetic block is installed on the pressing slider, and the key base can guide the sliding of the pressing slider; when the key cap is pressed, the magnetic block can move up and down relative to the key base as the pressing slider slides.

2. The ultra-thin long-stroke stable Hall effect switch according to claim 1, characterized in that: The side of the pressing slider facing the key seat is configured as a hollow structure, and a hollow column is extended from the middle of the hollow structure of the pressing slider toward the key seat, and the magnetic block is installed in the hollow column.

3. The ultra-thin long-stroke stable Hall effect switch according to claim 2, characterized in that: The key seat corresponds to the hollow cylinder and extends an annular guide platform toward the pressing slider. The outer diameter of the hollow cylinder matches the inner diameter of the annular guide platform. Pressing the key cap can insert the hollow cylinder of the pressing slider into the annular guide platform for guiding movement.

4. The ultra-thin long-stroke stable Hall effect switch according to claim 3, characterized in that: The hollow cylinder is surrounded by a wedge-shaped structure at the root where the pressing slider is combined. The higher end of the wedge-shaped structure faces the keycap. When the pressing slider moves downward, the wedge-shaped structure is wedged into and abuts against the top inner wall of the annular guide platform.

5. The ultra-thin long-stroke stable Hall effect switch according to claim 4, characterized in that: The bottom of the hollow cylinder is configured as a contracted frustum structure, the bottom of the annular guide platform is configured as an inclined table surface with a contracted inner diameter, and the minimum diameter of the frustum structure is smaller than the minimum diameter of the inclined table surface.

6. The ultra-thin long-stroke stable Hall effect switch according to claim 5, characterized in that: The bottom of the hollow cylinder is provided with a through hole, and the bottom of the annular guide platform is provided with an opening or a blind hole capable of accommodating a Hall element.

7. The ultra-thin long-stroke stable Hall effect switch according to claim 5, characterized in that: The resetting elastic member is a spring, and the spring is sleeved between the hollow cylinder and the annular guide platform.

8. The ultra-thin long-stroke stable Hall effect switch according to claim 5, characterized in that: The top and bottom ends of the scissors frame are respectively extended with pivot columns, the key seat is provided with a first pivot groove and a second pivot groove matching the bottom end of the scissors frame, and the pressing slider is provided with a first pivot groove and a second pivot groove matching the top end of the scissors frame.

9. The ultra-thin long-stroke stable Hall effect switch according to claim 5, characterized in that: The key also includes a cover plate, the middle of the cover plate is a hollow structure that can accommodate the key seat, the edge of the hollow structure of the cover plate is provided with a limiting hole, and the position of the key seat corresponding to the limiting hole is provided with an upward-raised protrusion, and the cover plate is installed on the PCB board through the limiting hole and the protrusion of the key seat.

10. The ultra-thin long-stroke stable Hall effect switch according to claim 5, characterized in that: The bottom of the keycap is provided with a plurality of hooks, the top of the pressing slider is provided with a hook groove corresponding to each hook, and the keycap and the pressing slider are combined through the hooks and the hook grooves.

11. A keyboard, characterized in that: The invention has a plurality of buttons as described in any one of claims 1 to 10, wherein the buttons are assembled on a base plate, and a Hall element is patched on a base plate position corresponding to each button.

Images