Sensing-type keyboard key switch

Abstract

Disclosed in the present utility model is a sensing-type keyboard key switch, comprising a PCB, a housing, a key stem, a metal sensing element, and an elastic member. A through hole is formed in the PCB; a coil is arranged at the through hole; the housing is located above the PCB; the key stem and the elastic member are arranged in the housing; one end of the key stem passes through the top of the housing to extend outwards; the metal sensing element is connected to the other end of the key stem; one end of the elastic member abuts against the key stem, and the other end of the elastic member abuts against the bottom in the housing. According to the sensing-type keyboard key switch in the present utility model, the relative position between the metal sensing element and the coil is changed by pressing the key stem, so as to feed back different signals, thereby implementing the key output function; the key switch has higher reliability and shorter response time; moreover, multiple manufacturing points can be formed, and assembly and disassembly are facilitated; costs are reduced, the maintainability is enhanced, and the waterproof performance is improved; due to convenient assembly and disassembly and easy plug and unplug, users can customize and assemble keyboards to meet the users' usage needs.

Description

An inductive keyboard key switch Technical Field

[0001] The utility model relates to the technical field of keyboards, in particular to an inductive keyboard key switch. Background Art

[0002] The keyboard is a device for inputting instructions and data for operating equipment. It is the most commonly used and most important input device. English letters, numbers, punctuation marks, etc. can be input into the computer through the keyboard, thereby issuing commands to the computer, inputting data, etc. The use of the keyboard is indispensable in the process of using the computer.

[0003] Currently, common keyboards include mechanical keyboards, membrane keyboards, and optical keyboards. As users' expectations for keyboards continue to increase, the reliability, responsiveness, versatility, and multiple manufacturing points of keyboard switches have become the current minimum requirements. However, existing keyboards such as mechanical keyboards, membrane keyboards, and optical keyboards cannot meet the above requirements. Therefore, it is necessary to design a new keyboard switch to meet user needs. Utility Model Content

[0004] The purpose of the utility model is to provide an inductive keyboard key switch which has good stability, strong response capability, multiple functions, adjustable production points and is easy to install.

[0005] In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] An inductive keyboard key switch comprises a PCB, a housing, a push shaft, a metal inductive element, and an elastic element. The PCB is provided with a through hole, and a coil is disposed in the through hole. The housing is located above the PCB, and the push shaft and the elastic element are respectively disposed within the housing. One end of the push shaft extends outward through the top of the housing, and the metal inductive element is connected to the other end of the push shaft. One end of the elastic element abuts the push shaft, and the other end abuts the bottom of the housing. When the push shaft is pressed, it moves downward, thereby driving the metal inductive element to sequentially pass through the bottom of the housing and the coil, thereby realizing signal induction.

[0007] In one embodiment, the push shaft is provided with a mounting hole, and the metal sensing component has a mounting post, which is inserted into the mounting hole to connect the metal sensing component to the push shaft.

[0008] In one embodiment, the metal sensing element is made of aluminum or copper.

[0009] In one embodiment, a sound spring is further provided in the shell, and a pressure block corresponding to the sound spring is provided on the side wall of the push shaft. When the push shaft moves up and down, the pressure block acts on the sound spring, thereby making the sound spring produce sound effects.

[0010] In one embodiment, the shell includes a base and a rubber cover, the side wall of the base is provided with a snap block, and the side wall of the rubber cover is provided with a snap groove corresponding to the snap block, and the snap groove block is snapped into the snap groove to make the rubber cover and the base snap-fitted and connected.

[0011] In one embodiment, the shell includes a base and a rubber cover, the side wall of the base is provided with a buckle platform, and the side wall of the rubber cover is provided with a hanging platform corresponding to the buckle platform, and the buckle platform and the hanging platform are buckled together to connect the rubber cover to the base.

[0012] In one embodiment, the inner wall of the base is provided with a limiting guide groove, and the side wall of the push shaft is provided with a limiting protrusion corresponding to the limiting guide groove. When the push shaft is installed in the shell, the limiting protrusion will be placed in the limiting guide groove and move along the limiting guide groove.

[0013] In one embodiment, the elastic member is a metal coil spring, and a shielding layer is coated on the surface of the metal coil spring.

[0014] In one embodiment, the metal sensing element is conical or trapezoidal in design.

[0015] In one embodiment, the mounting post and the mounting hole are connected by interference fit, threaded connection, bonding, or riveting. Beneficial effects

[0016] The inductive keyboard key switch of the present invention changes the relative position of the metal induction member and the coil by pressing the key shaft, thereby feeding back different signals to realize the key function. The induction method of the metal induction member and the coil position makes the key switch more reliable and has a faster response time. At the same time, the reaction position of the metal induction member and the coil can be manufactured and adjusted according to production requirements, thereby forming multiple manufacturing points. In addition, since there is no connection between the shell and the PCB board, a non-contact installation of the key switch can be formed, thereby saving costs, facilitating the disassembly and assembly of the key switch, improving maintainability, and improving waterproof performance. Since it is easy to disassemble and assemble and easy to plug and unplug, the user can customize the assembly of the keyboard to ultimately meet the user's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is an exploded schematic diagram of a first embodiment of an inductive keyboard key switch according to the present invention;

[0018] FIG2 is a diagram of the initial state of the first embodiment of the inductive keyboard key switch of the present invention;

[0019] FIG3 is a diagram of a first embodiment of the inductive keyboard key switch of the present invention in a pressed state;

[0020] FIG4 is a schematic diagram of the structure of the push-shaft of the inductive keyboard key switch according to the first embodiment of the present invention;

[0021] FIG5 is a schematic diagram of the base structure of a first embodiment of the inductive keyboard key switch of the present invention;

[0022] FIG6 is a schematic diagram of the structure of the rubber cover of the first embodiment of the inductive keyboard key switch of the present invention;

[0023] FIG7 is an exploded schematic diagram of a second embodiment of the inductive keyboard key switch of the present invention;

[0024] FIG8 is a diagram of the initial state of the second embodiment of the inductive keyboard key switch of the present invention;

[0025] FIG9 is a diagram showing a second embodiment of the inductive keyboard key switch of the present invention in a pressed state;

[0026] FIG10 is a schematic diagram of the structure of the push-shaft of the second embodiment of the inductive keyboard key switch of the present invention;

[0027] FIG11 is a schematic diagram of the base structure of a second embodiment of the inductive keyboard key switch of the present invention;

[0028] FIG12 is a schematic diagram of the rubber cover structure of the second embodiment of the inductive keyboard key switch of the present invention.

[0029] As shown in the attached figure:

[0030] 100, PCB board; 110, through hole;

[0031] 200, housing; 210, base; 211, snap-fit ​​block; 212, position-limiting guide groove; 213, buckle platform; 220, rubber cover; 221, snap-fit ​​groove; 222, hanging platform;

[0032] 300, press shaft; 310, mounting hole; 320, pressing block; 330, limiting protrusion;

[0033] 400, metal sensing part; 410, mounting column;

[0034] 500, elastic parts;

[0035] 600, coil;

[0036] 700. Sounding shrapnel. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only."

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example 1

[0040] Referring to Figures 1 to 6, an inductive keyboard key switch includes a PCB 100, a housing 200, a push shaft 300, a metal sensing member 400, and an elastic member 500. The PCB 100 is provided with a through hole 110, and a coil 600 is disposed in the through hole 110. The housing 200 is located above the PCB 100. The push shaft 300 and the elastic member 500 are respectively disposed within the housing 200. One end of the push shaft 300 extends outward through the top of the housing 200, and the metal sensing member 400 is connected to the other end of the push shaft 300. One end of the elastic member 500 abuts the push shaft 300, and the other end abuts the bottom of the housing 200. When the push shaft 300 is pressed, it moves downward, thereby driving the metal sensing member 400 to sequentially pass through the bottom of the housing 200 and the coil 600, thereby realizing signal sensing.

[0041] Specifically, the inductive keyboard key switch in this embodiment is an ultra-thin key with a pressing stroke of 1.6mm. During assembly, the housing 200 is placed above the PCB board 100, and a through hole 110 is opened on the PCB board 100. The through hole 110 can facilitate the movement of the metal sensing member 400, and a coil 600 is arranged at the through hole 110, and the pressing shaft 300 is arranged in the housing 200. The metal sensing member 400 is connected to one end of the pressing shaft 300 and is located above the through hole 110. When the key switch needs to be operated, the pressing shaft 300 is pressed, and the pressing shaft 300 squeezes the elastic member 500 and causes the metal sensing member 400 connected to the pressing shaft 300 to move downward. The metal sensing member 400 will pass through the bottom of the housing 200 and the coil 600 in sequence. During the downward movement, the metal sensing member 400 changes its relative position with the coil 600, thereby feeding back different signals, thereby achieving the key output function of the key switch.

[0042] By inducing changes in the positions of the metal sensing member 400 and the coil 600, the key switch has improved reliability (no mechanical or electrical degradation throughout its life cycle) and a faster response time (a response time of less than 250ps). Furthermore, the reaction positions of the metal sensing member 400 and the coil 600 can be adjusted and manufactured according to production requirements, thereby forming multiple manufacturing points. Furthermore, since there is no connection between the housing 200 and the PCB board 100, a contactless installation of the key switch can be achieved, thereby saving costs, facilitating assembly and disassembly of the key switch, improving maintainability, and enhancing waterproof performance. Due to its easy assembly and disassembly and plugging, users can also customize the assembly of the keyboard (different keyboard profiles, such as gaming and word processing), ultimately satisfying the user's usage needs through the inductive keyboard key switch.

[0043] In addition, in order to facilitate the induction between the metal sensing part 400 and the coil 600, the metal sensing part 400 in this embodiment is made of metal materials such as aluminum or copper, and has a conical or trapezoidal design. The conical or trapezoidal structure of the metal sensing part 400 allows the metal sensing part 400 to easily pass through the bottom of the shell 200 and the coil 600 during the downward movement. Of course, the metal sensing part 400 can also adopt other shapes, as long as it is convenient for the metal sensing part 400 to pass through the bottom of the shell 200, the coil 600 and the through hole 110.

[0044] Furthermore, the coil 600 can be set at the top or bottom of the through hole 110 of the PCB board 100. If it is set at the bottom of the through hole 110 of the PCB board 100, the metal sensor 400 needs to pass through the entire through hole 110 and pass through the coil 600 at the bottom.

[0045] In order to realize the connection between the metal sensing part 400 and the pressing shaft 300, the pressing shaft 300 in this embodiment is provided with a mounting hole 310, and the metal sensing part 400 has a mounting column 410. When assembling and connecting, the mounting column 410 is directly inserted into the mounting hole 310 to connect the metal sensing part 400 and the pressing shaft 300. The mounting column 410 and the mounting hole 310 can be connected by any of interference connection, threaded connection, bonding or riveting. Of course, other connection methods can also be used. It is only necessary to connect the metal sensing part 400 and the pressing shaft 300.

[0046] At the same time, in order to assemble the push button switch, the housing 200 in this embodiment includes a base 210 and a rubber cover 220. A snap-fit ​​block 211 is provided on the side wall of the base 210, and a snap-fit ​​groove 221 corresponding to the snap-fit ​​block 211 is opened on the side wall of the rubber cover 220. During assembly, the snap-fit ​​block 211 of the base 210 is directly inserted into the snap-fit ​​groove 221 of the rubber cover 220, so that the rubber cover 220 and the base 210 can be snap-fitted and connected. The cooperation between the snap-fit ​​block 211 and the snap-fit ​​groove 221 facilitates the assembly of the rubber cover 220 and the base 210, and facilitates subsequent maintenance.

[0047] Since the push shaft 300 needs to move up and down when being pressed, and in order to ensure that it can move more smoothly, a limiting guide groove 212 is provided on the inner wall of the base 210, and a limiting protrusion 330 corresponding to the limiting guide groove 212 is provided on the side wall of the push shaft 300. When the push shaft 300 is installed in the shell 200, the limiting protrusion 330 will be placed in the limiting guide groove 212. When the push shaft 300 is pressed, the limiting protrusion 330 of the push shaft 300 will move along the limiting guide groove 212, thereby limiting and guiding the push shaft 300 as a whole, so that the pressing of the push shaft 300 is smoother and more convenient, and there will be no jamming.

[0048] Furthermore, the elastic part 500 in this embodiment is a metal coil spring. The elastic part 500 made of metal material can increase the service life of the elastic part 500. In order to avoid interference between the metal elastic part 500 and the coil 600, in this embodiment, a shielding layer is coated on the surface of the metal elastic part 500. The shielding layer can be made of resin material. The shielding layer can effectively avoid interference between the elastic part 500 and the coil 600, thereby ensuring the accuracy of signal induction between the metal sensing part 400 and the coil 600.

[0049] Finally, in order to improve the functionality of the push switch, in this embodiment, a sound spring 700 is further provided in the shell 200, and a pressure block 320 corresponding to the sound spring 700 is provided on the side wall of the push shaft 300. When the push shaft 300 is pressed to move it up and down, the pressure block 320 on the side wall of the push shaft 300 will act on the sound spring 700, thereby causing the sound spring 700 to produce a sound effect, so that the push switch can produce a crisp sound when in use. Example 2

[0050] Please refer to Figures 7 to 12. The inductive keyboard key switch in this embodiment is basically the same as the inductive keyboard key switch in Example 1, except that: the housing 200 includes a base 210 and a rubber cover 220, the side wall of the base 210 is provided with a buckle platform 213, and the side wall of the rubber cover 220 is provided with a hanging platform 222 corresponding to the buckle platform 213. The buckle platform 213 and the hanging platform 222 are buckled together to connect the rubber cover 220 to the base 210.

[0051] Specifically, the inductive keyboard key switch in this embodiment is a mechanical key with a 4mm pressing stroke. In order to realize the assembly of the key switch, a buckle platform 213 is provided on the side wall of the base 210, and a hanging platform 222 is provided on the side wall of the rubber cover 220. During assembly, the hanging platform 222 of the rubber cover 220 is directly buckled into the buckle platform 213 of the base 210 to assemble and connect the base 210 and the rubber cover 220. The buckle platform 213 and the hanging platform 222 make it easy to disassemble and assemble the rubber cover 220 and the base 210, which is convenient for later maintenance.

[0052] Similarly, by sensing the position of the metal sensing member 400 and the coil 600, the key switch has better reliability (no mechanical or electrical degradation throughout its life cycle) and faster response time (response time less than 250ps). At the same time, the reaction position of the metal sensing member 400 and the coil 600 can be adjusted and manufactured according to production requirements, thereby forming multiple manufacturing points. In addition, since there is no connection between the housing 200 and the PCB board 100, a non-contact installation of the key switch can be formed, thereby saving costs, facilitating the disassembly and assembly of the key switch, improving maintainability, and enhancing waterproof performance. Since it is easy to disassemble and assemble and easy to plug and unplug, the user can also customize the assembly of the keyboard (different keyboard profiles, such as gaming and word processing), and ultimately meet the user's usage needs through the inductive keyboard key switch.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Any person skilled in the art can smoothly implement the present invention according to the drawings and the above description. However, any person skilled in the art who, without departing from the scope of the present invention, makes slight changes, modifications and equivalent changes based on the above disclosed technical content shall be an equivalent embodiment of the present invention. At the same time, any equivalent changes, modifications and equivalent changes made to the above embodiments based on the essential technology of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An inductive keyboard key switch, characterized in that: It includes a PCB board, a housing, a push shaft, a metal induction member and an elastic member. The PCB board is provided with a through hole, and a coil is provided at the through hole. The housing is located above the PCB board, the push shaft and the elastic member are respectively arranged in the housing, and one end of the push shaft extends outward through the top of the housing, and the metal sensing member is connected to the other end of the push shaft; One end of the elastic member abuts against the push shaft, and the other end abuts against the bottom of the shell; When the button shaft is pressed, it moves downward, thereby driving the metal sensing element to pass through the bottom of the shell and the coil in sequence, thereby realizing signal sensing.

2. The inductive keyboard key switch according to claim 1, characterized in that: The push shaft is provided with a mounting hole, and the metal sensing piece has a mounting post. The mounting post is inserted into the mounting hole to connect the metal sensing piece to the push shaft.

3. The inductive keyboard key switch according to claim 1, characterized in that: The metal sensing element is made of aluminum or copper.

4. The inductive keyboard key switch according to claim 1, wherein: A sound spring is also provided in the shell, and a pressure block corresponding to the sound spring is provided on the side wall of the push shaft. When the push shaft moves up and down, the pressure block acts on the sound spring, thereby making the sound spring produce sound effects.

5. The inductive keyboard key switch according to claim 1, characterized in that: The shell includes a base and a rubber cover. The side wall of the base is provided with a snap block, and the side wall of the rubber cover is provided with a snap slot corresponding to the snap block. The snap slot block is snapped into the snap slot to make the rubber cover and the base buckle connected.

6. The inductive keyboard key switch according to claim 1, characterized in that: The shell includes a base and a rubber cover. The side wall of the base is provided with a buckle platform, and the side wall of the rubber cover is provided with a hanging platform corresponding to the buckle platform. The buckle platform and the hanging platform are buckled together to connect the rubber cover to the base.

7. The inductive keyboard key switch according to claim 5 or 6, characterized in that: The inner wall of the base is provided with a limiting guide groove, and the side wall of the pressing shaft is provided with a limiting protrusion corresponding to the limiting guide groove. When the pressing shaft is installed in the shell, the limiting protrusion will be placed in the limiting guide groove and move along the limiting guide groove.

8. The inductive keyboard key switch according to claim 1, characterized in that: The elastic member is a metal coil spring, and a shielding layer is coated on the surface of the metal coil spring.

9. The inductive keyboard key switch according to claim 1, characterized in that: The metal sensing element is designed to be conical or trapezoidal.

10. The inductive keyboard key switch according to claim 2, characterized in that: The mounting post and the mounting hole are connected by any one of interference connection, thread connection, bonding and riveting.

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