Key switch and keyboard

Abstract

The utility model provides a key switch and a keyboard, and belongs to the technical field of electronic equipment. The key switch provided by the utility model comprises a shell, and a stroke assembly and a signal assembly which are accommodated in the shell, the stroke assembly comprises a shaft core, a shaft grid which is connected with the shaft core and is separated from the shaft core, and an elastic piece which is accommodated in the shell and enables the shaft core and the shaft grid to be in a normal contact state, and the contact surface of the shaft core and the shaft grid is an arc-shaped surface; the signal assembly comprises a trigger part and an induction part, the trigger part is installed on the shaft grid, the shaft core drives the shaft grid to move and drives the trigger part to move in the direction close to the induction part, and when the distance between the trigger part and the induction part reaches a preset threshold value, an induction signal is triggered. In order to solve the problem that in the prior art, the contact surface of the shaft core and the shaft grid is a plane, and the shaft grid can be driven to tilt when the shaft core tilts laterally, the contact surface of the shaft core and the shaft grid is adjusted to be the arc-shaped surface, the shaft grid cannot be driven to tilt when the shaft core tilts laterally, jamming caused by friction between the shaft grid and the lead column is avoided, and use experience is improved.

Description

[Technical field]

[0001] The utility model belongs to the technical field of electronic equipment, and in particular relates to a key switch and a keyboard. [Background technology]

[0002] The keyboard is a common electronic device input tool. There are several key switches on the keyboard. Pressing the key switches generates induction signals. The key switches generally include a housing, a travel component and a signal component. The travel component includes a shaft core, a shaft grid and a lead column. The shaft core is used to drive the shaft grid to move along the lead channel of the lead column.

[0003] In the related technology, the shaft core and the shaft grid are integrally arranged. When the shaft core is pressed for input, once the pressing position deviates from the center of the shaft core, the shaft core will tilt, causing the shaft grid to also tilt in a lever-like manner. The tilted shaft grid and the guide column rub against each other to form resistance, resulting in a sticking feeling, which greatly reduces the user experience.

[0004] Therefore, it is necessary to provide a key switch and a keyboard to solve the problems mentioned in the above background technology. [Contents of the utility model]

[0005] In view of the problem in the prior art that the contact surface between the shaft core and the shaft grid is a plane and the tilt of the shaft core will cause the tilt of the shaft grid, the utility model provides a key switch and a keyboard, in which the contact surface between the shaft core and the shaft grid is adjusted to an arc-shaped surface, so that the tilt of the shaft core will not cause the tilt of the shaft grid, thereby avoiding the friction between the shaft grid and the lead column to form a sticking feeling, thereby improving the user experience.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] The present application provides a key switch, comprising:

[0008] case;

[0009] The stroke assembly accommodated in the housing comprises a shaft core, a shaft grid connected to the shaft core and separately arranged from the shaft core, and an elastic member accommodated in the housing and making the shaft core and the shaft grid in a constant contact state, wherein the contact surface between the shaft core and the shaft grid is an arc surface;

[0010] The signal component includes a triggering member and a sensing member. The triggering member is installed on the shaft grid. The shaft core drives the shaft grid to move, driving the triggering member to move toward the sensing member. When the distance between the triggering member and the sensing member reaches a preset threshold, an induction signal is triggered.

[0011] As an improvement, the shaft grid includes a main body and a connecting part arranged on the top of the main body; the shaft core includes a pressing part and a limiting part, the pressing part passes through the shell and is exposed, and the limiting part is limited inside the shell; the contact surface between the pressing part and the connecting part is an arc surface.

[0012] As an improvement, a first protrusion extending in an arc shape toward the connecting portion is formed at the bottom of the pressing portion, and a first groove matching the first protrusion is provided on the connecting portion. The first protrusion is assembled in the first groove and can rotate freely in the first groove.

[0013] As an improvement, a second arc-shaped protrusion extending toward the pressing portion is formed on the top of the connecting portion, and a second groove matching the second protrusion is provided at the bottom of the pressing portion. The second protrusion is assembled in the second groove and can rotate freely in the second groove.

[0014] As an improvement, the main body is a hollow structure with openings at both ends, the bottom of the main body is bent into the hollow area to form a first support portion, and the first groove is connected to the hollow area of ​​the main body, and the trigger member is installed in the hollow area of ​​the main body through the first groove and is carried on the first support portion.

[0015] As an improvement, the main body is a hollow structure with openings at both ends, the bottom of the main body is bent into the hollow area to form a second support portion, and the second protrusion and the connecting portion are penetrated by a through hole connected to the hollow area of ​​the main body, the trigger member is installed in the hollow area of ​​the main body through the through hole and is carried on the second support portion.

[0016] As an improvement, the cross-sectional shape of the pressing portion is an octagon.

[0017] As an improvement, the stroke assembly also includes a guide column, which is connected to the shell and is provided with a guide channel, along which the main body can reciprocate; the elastic member is sleeved on the guide column and clamped between the shell and the connecting portion.

[0018] As an improvement, the shell includes a face cover and a base, the face cover and the base cooperate to form a receiving space, and both ends of the shell are open, wherein the top opening is located on the face cover and serves as a through-hole for the stroke component; the bottom opening is located on the base and is sealed with a thin rubber.

[0019] The present application also provides a keyboard, comprising a plurality of the above-mentioned key switches.

[0020] The beneficial effect of the utility model is that the shaft core and the shaft grid are separately arranged, and the shaft core and the shaft grid are in a constant contact state through the elastic force of the elastic part, and the contact surface between the shaft core and the shaft grid is adjusted to an arc surface. When the shaft core tilts, the shaft core will not drive the shaft grid to tilt, thereby avoiding the friction between the shaft grid and the lead column to form a sticking feeling, thereby improving the user experience.

Brief Description of the Drawings

[0021] Figure 1 A three-dimensional structural diagram showing a key switch provided in the first embodiment;

[0022] Figure 2 express Figure 1 The exploded structural diagram of the key switch shown;

[0023] Figure 3 express Figure 2 Another angle schematic diagram of the shaft core shown;

[0024] Figure 4 express Figure 2 A top view of the shaft core shown;

[0025] Figure 5 express Figure 1 A cross-sectional view of the key switch shown;

[0026] Figure 6 express Figure 1 The diagram of the key switch in use shown;

[0027] Figure 7 A cross-sectional view showing a key switch provided in Example 2;

[0028] Figure 8 A cross-sectional view showing a key switch provided in Example 3;

[0029] Fig. 9 A cross-sectional view showing a key switch provided in Example 4;

[0030] Fig.10 A schematic diagram showing the structure of the keyboard provided in Example 5. [Specific implementation method]

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Example 1

[0033] Please refer to Figure 1-Figure 6This embodiment provides a push button switch, which includes a housing 11, a travel component 12 and a signal component 13 accommodated in the housing 11.

[0034] The housing 11 is used as a packaging device to package and protect other components. The housing 11 includes a cover 111 and a base 112. The cover 111 and the base 112 cooperate to form a receiving space. In this embodiment, the cover 111 and the base 112 are detachably connected, specifically, a snap connection; in other embodiments, the cover 111 and the base 112 can also be directly fixed, for example, by gluing or ultrasonic welding.

[0035] Preferably, the cover 111 completely covers the base 112, which can improve the sealing performance and increase the waterproof and dustproof effect. The outer surface of the base 112 is protruding to form a card block, and the cover 111 is provided with a buckle at a position corresponding to the card block, and the buckle is buckled on the card block to achieve the connection between the cover 111 and the base 112.

[0036] The housing 11 has openings at both ends, wherein the top opening is located on the cover 111 and serves as an outlet for the travel assembly 12; the bottom opening is located on the base 112 and is sealed with a thin adhesive 1211, so that the lubricating grease, dust and impurities inside the key switch do not fall and affect the PCB board, thereby increasing the waterproof and dustproof effect. In order to more clearly illustrate the solution of this embodiment, the top opening of the housing 11 is defined as a first opening 113, and the bottom opening is defined as a second opening 114.

[0037] The stroke assembly 12 is a human-machine interaction device that receives the pressing driving force of the user to generate a reciprocating linear stroke. The stroke assembly 12 includes a lead column 121, a shaft grid 122, a shaft core 123 that is separated from the shaft grid 122, and an elastic member 124.

[0038] The lead column 121 is fixed to the base 112 and is disposed opposite to the second opening 114 . A lead channel with openings at both ends is disposed inside the lead column 121 , and the bottom of the lead channel is blocked by the thin glue 1211 .

[0039] The shaft grid 122 includes a main body 1221 and a connecting portion 1222 arranged on the top of the main body 1221. The main body 1221 is a hollow structure with openings at both ends. The connecting portion 1222 blocks the top opening of the main body 1221. The shaft grid 122 is a rotating body structure. The main body 1221 and the connecting portion 1222 are coaxially arranged, and the radius of the connecting portion 1222 is greater than the radius of the main body 1221.

[0040] The main body 1221 is inserted from the top opening of the lead channel and can reciprocate linearly in the lead channel. The lead channel serves as a travel space for the main body 1221 .

[0041] The lead column 121 can provide guidance and limit functions for the movement of the shaft grid 122 , so that the movement direction of the shaft grid 122 is always the axial direction of the lead column 121 .

[0042] The shaft core 123 is used to drive the shaft grid 122 to move. The shaft core 123 includes a pressing portion 1231 and a limiting portion 1232. The pressing portion 1231 passes through the first opening 113 and is exposed to the outside of the shell. The limiting portion 1232 is limited by the surface cover 111 in the receiving space 113.

[0043] The pressing portion 1231 is located above the connecting portion 1222 and contacts the connecting portion 1222 , so that the driving force on the shaft core 123 is transmitted to the shaft grid 122 . The contact surface between the pressing portion 1231 and the connecting portion 1222 is an arc surface.

[0044] Specifically, in this embodiment, the bottom of the pressing portion 1231 is protruded to form an arc-shaped first protrusion 1233 extending toward the connecting portion 1222, and the connecting portion 1222 is provided with a first groove 1223 matching the first protrusion 1233, and the first protrusion 1233 is assembled in the first groove 1223. The first protrusion 1233 plays the role of a joint wrist ball head hinge, and when the top of the shaft core 123 swings horizontally or is pressed sideways, the first protrusion 1233 can rotate in the first groove 1223, and the horizontal displacement component generated by the rotation can just offset the horizontal component generated by the side tilt of the shaft core 123, so that the shaft core 123 will not generate a horizontal driving force on the shaft grid 122. That is, when the top of the shaft core 123 is horizontally swung or tilted, the first protrusion 1233 and the arc-shaped contact surface of the first groove 1223 cooperate with each other to eliminate the tilt caused by the swing of the shaft core 123, so that the shaft grid 122 can maintain vertical reciprocating motion without tilting, avoiding the friction between the shaft grid 122 and the lead column 121 to form a sticky feeling, thereby improving the user experience. In this embodiment, the first protrusion 1233 is in an arc shape.

[0045] Furthermore, the cross-sectional shape of the pressing portion 1231 is a regular polygon, and the number of sides is an integer multiple of 4. In conventional technology, the cross-sectional shape of the pressing portion 1231 is a quadrilateral, and there are only four tube positions of front, rear, left and right. When the pressing position is not in the correct position of the front, rear, left and right tube positions, the space required for the rotation of the shaft core 123 cannot be provided, which will cause the ball head hinge to fail. Therefore, the present application chooses to select the number of sides of the pressing portion 1231 to be an integer multiple of 4. While retaining the traditional four tube positions of front, rear, left and right, multiple lateral tube positions are additionally added. Taking a regular octagon as an example, the eight tube positions of front, rear, left, right, upper left, lower left, upper right and lower right can provide space for the rotation of the shaft core 123 in eight directions, and no jamming feeling will be formed in these eight directions.

[0046] The elastic member 124 is sleeved on the periphery of the lead column 121 and sandwiched between the base 112 and the connecting portion 1222, and is used to drive the shaft grid 122 to reset. When the shaft grid 122 moves downward under the driving force, the elastic member 124 is compressed; after the driving force disappears, the elastic member 124 resets and drives the shaft grid 122 and the shaft core 123 to reset upward.

[0047] In this embodiment, the elastic member 124 is selected to be a spring. In order to increase the installation stability of the elastic member 124, the bottom of the elastic member 124 can be directly fixed to the base 112, and a limiting structure can be added to the bottom of the base 112. The limiting structure and the lead column 121 are spaced apart to form a slot to clamp the bottom of the elastic member 124.

[0048] The signal component 13 includes a trigger component 131 , a sensor component 132 and a PCB board 133 .

[0049] The trigger member 131 is installed on the shaft grid 122, and the shaft core 123 drives the shaft grid 122 to move, driving the trigger member 131 to move towards the sensing member 132. When the distance between the trigger member 131 and the sensing member 132 reaches a preset threshold, a sensing signal is triggered.

[0050] In this embodiment, the trigger member 131 is fixed in the hollow area of ​​the main body 1221 by gluing. During installation, the trigger member 131 is inserted into the bottom opening of the main body 1221 .

[0051] The PCB board 133 is disposed at one end of the base 112 away from the cover 111 . The sensor 132 is mounted on the PCB board 133 and is electrically connected to the PCB board 133 .

[0052] The triggering member 131 is a magnet, and the induction member 132 is a magnetic sensor.

[0053] In summary, the beneficial effects of the present invention are:

[0054] (1) The shaft core and the shaft grid are set separately, and the elastic force of the elastic member makes the shaft core and the shaft grid always in contact. The contact surface between the shaft core and the shaft grid is adjusted to an arc surface. When the shaft core tilts, the shaft core will not drive the shaft grid to tilt, avoiding the friction between the shaft grid and the lead column to form a sticky feeling, thereby improving the user experience;

[0055] (2) The pressing portion is configured as a regular polygon structure, and the number of sides is selected to be an integer multiple of 4. While retaining the traditional four tube positions of front, rear, left, and right, multiple lateral tube positions are additionally added, which can provide space for the rotation of the shaft core in multiple directions, further reducing the feeling of sticking.

[0056] Example 2

[0057] In Example 1, the trigger member 131 is installed from the bottom opening of the main body 1221 and fixed in the hollow area of ​​the main body 1221. Since the fixing method is generally glue fixing, as the use time increases, the trigger member 131 is easy to detach from the main body 1221 after the glue ages, making the button ineffective.

[0058] See also Figure 7 In this embodiment, the bottom of the main body 1221 is bent into the hollow area to form a first support portion 1224, and the first groove 1223 is connected to the hollow area of ​​the main body 1221. The trigger member 131 is installed in the hollow area of ​​the main body 1221 through the first groove 1223 and is carried on the first support portion 1224.

[0059] This method not only retains the assembly between the first protrusion 1233 and the first groove 1223 , but also solves the defect that the trigger member 131 is easy to fall off.

[0060] Example 3

[0061] See also Figure 8 The present embodiment provides a key switch, including a housing 21, a travel component 22 and a signal component 23. The travel component 22 includes a lead column 221, a shaft grid 222, a shaft core 223 and an elastic member 224. The signal component 23 includes a trigger member 231, a sensor member 232 and a PCB board 233.

[0062] The shaft grid 222 includes a main body 2221 and a connecting portion 2222 arranged on the top of the main body 2221; the shaft core 223 includes a pressing portion 2231 and a limiting portion 2232, the pressing portion 2231 is in contact with the connecting portion 2222, so that the driving force on the shaft core 223 is transmitted to the shaft grid 222, and the contact surface between the pressing portion 2231 and the connecting portion 2222 is an arc surface.

[0063] Specifically, in this embodiment, the top of the connecting portion 2222 is protruded to form an arc-shaped second protrusion 2223 extending toward the pressing portion 2231, and the bottom of the pressing portion 2231 is provided with a second groove 2233 matching the second protrusion 2223, and the second protrusion 2223 is assembled in the second groove 2233, and the second protrusion 2223 plays the role of a ball head hinge. When the shaft core 223 tilts, the second protrusion 2223 can rotate in the second groove 2233, and the horizontal displacement component generated by the rotation can just offset the horizontal component generated by the tilt of the shaft core 223, so that the shaft core 223 will not generate a horizontal driving force on the shaft grid 222, and the shaft grid 222 can maintain vertical movement without tilting, avoiding the friction between the shaft grid 222 and the lead column 221 to form a jamming feeling, thereby improving the user experience. In this embodiment, the second protrusion 2223 is in an arc shape.

[0064] The other structures in this embodiment are the same as those in Implementation 1, and will not be described in detail in this embodiment.

[0065] Example 4

[0066] In Example 3, the trigger member 231 is installed from the bottom opening of the main body 2221 and fixed in the hollow area of ​​the main body 2221. Since the fixing method is generally glue fixing, as the use time increases, the trigger member 231 is easy to detach from the main body 2221 after the glue ages, making the button ineffective.

[0067] See also Fig. 9 In this embodiment, the bottom of the main body 2221 is bent into the hollow area to form a second support portion 2224, and the second protrusion 2223 and the connecting portion 2222 are penetrated by a through hole 2225 that is connected to the hollow area of ​​the main body 2221. The trigger member 231 is installed in the hollow area of ​​the main body 2221 through the through hole 2225 and is carried on the second support portion 2224.

[0068] This method not only retains the assembly of the second protrusion 2223 and the second groove 2233 , but also solves the defect that the trigger member 231 is easy to fall off.

[0069] Example 5

[0070] See also Fig.10 This embodiment provides a keyboard 1, including a plurality of key switches 10, and the key switches 10 are selected from any one of embodiments 1-4.

[0071] The keyboard 1 is used in conjunction with an electronic device as an input tool of the electronic device. When in use, pressing the key switch 10 generates a sensing signal corresponding to the key switch 10 .

[0072] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. A key switch, characterized in that: include: case; The stroke assembly accommodated in the housing comprises a shaft core, a shaft grid connected to the shaft core and separately arranged from the shaft core, and an elastic member accommodated in the housing and making the shaft core and the shaft grid in a constant contact state, wherein the contact surface between the shaft core and the shaft grid is an arc surface; The signal component includes a triggering member and a sensing member. The triggering member is installed on the shaft grid. The shaft core drives the shaft grid to move, driving the triggering member to move toward the sensing member. When the distance between the triggering member and the sensing member reaches a preset threshold, an induction signal is triggered.

2. The key switch according to claim 1, characterized in that: The shaft grid includes a main body and a connecting part arranged on the top of the main body; the shaft core includes a pressing part and a limiting part, the pressing part passes through the shell and is exposed, and the limiting part is limited in the shell; the contact surface between the pressing part and the connecting part is an arc surface.

3. The key switch according to claim 2, characterized in that: A first protrusion extending in an arc shape toward the connecting portion is formed at the bottom of the pressing portion, and a first groove matching the first protrusion is provided on the connecting portion. The first protrusion is assembled in the first groove and can rotate freely in the first groove.

4. The key switch according to claim 2, characterized in that: A second arc-shaped protrusion extending toward the pressing portion is formed at the top of the connecting portion, and a second groove matching the second protrusion is provided at the bottom of the pressing portion. The second protrusion is assembled in the second groove and can rotate freely in the second groove.

5. The key switch according to claim 3, characterized in that: The main body is a hollow structure with openings at both ends. The bottom of the main body is bent into the hollow area to form a first support portion, and the first groove is connected to the hollow area of ​​the main body. The trigger member is installed in the hollow area of ​​the main body through the first groove and is carried on the first support portion.

6. The key switch according to claim 4, characterized in that: The main body is a hollow structure with openings at both ends. The bottom of the main body is bent into the hollow area to form a second support portion, and the second protrusion and the connecting portion are penetrated by a through hole connected to the hollow area of ​​the main body. The trigger member is installed in the hollow area of ​​the main body through the through hole and is carried on the second support portion.

7. The key switch according to claim 2, characterized in that: The cross-section of the pressing portion is octagonal.

8. The key switch according to claim 2, characterized in that: The stroke assembly also includes a lead column, which is connected to the shell and is provided with a lead channel, along which the main body can reciprocate; the elastic member is sleeved on the lead column and clamped between the shell and the connecting portion.

9. The key switch according to claim 1, characterized in that: The shell includes a cover and a base, the cover and the base cooperate to form a receiving space, both ends of the shell are open, wherein the top opening is located on the cover and serves as an outlet for the travel component; the bottom opening is located on the base and is sealed with a thin rubber.

10. A keyboard, characterized in that: The invention comprises the key switches according to any one of claims 1 to 9.

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