CN216818154U

CN216818154U - Reset centering structure of key switch, keyboard and computer

Info

Publication number: CN216818154U
Application number: CN202220245377.3U
Authority: CN
Inventors: 张建
Original assignee: Shenzhen Siiqi Electronic Technology Co ltd
Current assignee: Shenzhen Siiqi Electronic Technology Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-06-24
Anticipated expiration: 2032-01-28

Abstract

The application belongs to the technical field of electronic equipment, and in particular relates to a reset-to-center structure of a key switch, a keyboard and a computer. The reset-to-center structure of a key switch is used in conjunction with a keycap, and includes a casing, a guide core and an elastic member. The body has a receiving cavity, and the surface of the casing is provided with a through hole; the guide core has a connecting guide part and a connecting part, the guide part is arranged in the receiving cavity, and the connecting part is penetrated in the through hole and used for connecting with the keycap; The two ends of the elastic piece are respectively connected with the inner wall of the receiving cavity and the guide part, and are used to push the connecting part out of the through hole to realize the rebound of the keycap; the side wall of the receiving cavity is provided with a guide groove, and the side of the guide part is provided with a guide groove. The guide protrusion is slidably connected to the guide groove, the end surface of the guide protrusion close to the through hole is provided with a first positioning portion, and the groove wall of the guide groove is provided with a second positioning portion adapted to the first positioning portion department. The reset structure of the key switch provided by the present application can make the key cap return to the center position.

Description

Reset centering structure of key switch, keyboard and computer

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a reset centering structure of a key switch, a keyboard and a computer.

Background

The key is widely used in electronic devices such as computer keyboards, push-button mobile phones, calculators, game machines, dolls, etc. as a switch structure for controlling input. When the key is pressed down, the relevant circuit is connected, so that the input operation of the electronic equipment is realized, and when the key is released, the key rebounds under the action of the elastic element, the circuit is disconnected, and the input is stopped. However, when the key is rebounded, the key cap of the key often tilts to different degrees and cannot return to the central position, and even the key is locked and cannot rebound to the initial height.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a key switch's structure, keyboard and computer in returning to reseing, aim at solving the key cap can not return the technical problem of well position when rebounding among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a reset centering structure of a key switch is used for being matched with a key cap for use and comprises a shell, a guide core and an elastic piece, wherein the shell is provided with an accommodating cavity, and the surface of the shell is provided with a through hole communicated with the accommodating cavity; the guide core is provided with a guide part and a connecting part which are connected, the guide part is arranged in the containing cavity, and the connecting part is arranged in the through hole in a penetrating way and is used for being connected with the keycap; the two ends of the elastic piece are respectively connected with the inner wall of the accommodating cavity and the guide part and used for pushing the connecting part out of the through hole so as to realize the rebound of the keycap; the lateral wall of accepting the chamber is provided with the guide way, and the side of guide part is provided with the direction arch, and protruding sliding connection in guide way leads to and is provided with first location portion on protruding terminal surface that is close to the wear-to-establish hole, is provided with the second location portion with first location portion looks adaptation on the cell wall of guide way.

Furthermore, the first positioning part is a positioning bulge, the width of the positioning bulge is gradually reduced in the rebound direction of the keycap, the second positioning part is a positioning groove, the width of the positioning groove is gradually reduced in the rebound direction of the keycap, and the positioning bulge is used for being inserted into the positioning groove;

or, second location portion is protruding for the location, and in the resilience direction of key cap, the bellied width crescent of location, first location portion is the constant head tank, and in the resilience direction of key cap, the width crescent of constant head tank, location arch is used for inserting in the constant head tank.

Furthermore, the positioning protrusion is a trapezoidal protrusion, and the positioning groove is a trapezoidal groove.

Furthermore, two opposite side surfaces of the positioning protrusion in the width direction of the positioning protrusion are cambered surfaces, and two opposite side surfaces of the positioning groove in the width direction of the positioning groove are cambered surfaces.

Further, when the first positioning portion is a positioning protrusion and the second positioning portion is a positioning groove, the positioning protrusion is located in the middle of the width direction of the guide protrusion, and the maximum width of the positioning protrusion is smaller than the width of the guide protrusion.

Further, the relative both sides of guide part all are provided with the direction arch, accept the relative both sides wall in chamber and all be provided with the guide way, direction arch and guide way one-to-one sliding connection.

Further, the bottom surface that the guide part dorsad connecting portion is provided with the guide post, accepts the intracavity and is provided with hollow post, and in the guide post inserted hollow post, the elastic component cover was located outside the hollow post.

Furthermore, the keycap is provided with a connecting column, a connecting hole is formed in the connecting column, the connecting part is inserted into the connecting hole, and the cross-sectional size of the connecting column is smaller than that of the penetrating hole.

One or more technical solutions in the reset-to-center structure of the key switch provided by the present application have at least one of the following technical effects: when a pressing force is applied to the keycap, the keycap drives the guide protrusion of the guide part to slide in the guide groove through the connecting part, the first positioning part and the second positioning part are separated immediately, and in the process, the guide part overcomes the resistance of the elastic part and is far away from the through hole; when withdrawing the pressing force of exerting on the key cap, the guide part drives the direction arch to return in the guide way under the thrust of elastic component and accomplishes the cooperation until first location portion and second location portion reconnect, and simultaneously, outside connecting portion were pushed out the wear hole by the guide part, the key cap got back to initial position, realizes the resilience of key cap promptly. Through the location cooperation of first location portion and second location portion for lead the core and can accurately reset, eliminated and led the skew and/or the deflection that core and key cap produced when kick-backing, the key cap can accurately get back to the position of well centre and can not take place crooked promptly, has just also avoided the dead problem of card that the key cap kick-backs the in-process and appears.

In order to achieve the purpose, the technical scheme adopted by the application further provides a keyboard which comprises the reset centering structure of the key switch.

One or more technical solutions in the keyboard provided by the present application have at least one of the following technical effects: when a pressing force is applied to the keycap, the keycap drives the guide protrusion of the guide part to slide in the guide groove through the connecting part, the first positioning part and the second positioning part are separated immediately, and in the process, the guide part overcomes the resistance of the elastic part and is far away from the through hole; when withdrawing the pressing force of exerting on the key cap, the guide part drives the direction arch to return in the guide way under the thrust of elastic component and accomplishes the cooperation until first location portion and second location portion reconnect, and simultaneously, outside connecting portion were pushed out the wear hole by the guide part, the key cap got back to initial position, realizes the resilience of key cap promptly. Through the location cooperation of first location portion and second location portion for lead the core and can accurately reset, avoided leading the skew and/or the deflection of core, and then eliminated the skew and/or the deflection that the key cap produced when kick-backing, the key cap can accurately get back to the position of centre and can not take place crooked, has just also avoided the dead problem of card that the key cap kick-backs the in-process and appears.

In order to achieve the above object, the present application further provides a computer including the above keyboard.

One or more technical solutions in the computer provided by the present application have at least one of the following technical effects: when a pressing force is applied to the keycap, the keycap drives the guide protrusion of the guide part to slide in the guide groove through the connecting part, the first positioning part and the second positioning part are separated immediately, and in the process, the guide part overcomes the resistance of the elastic part and is far away from the through hole; when withdrawing the pressing force of exerting on the key cap, the guide part drives the direction arch to return in the guide way under the thrust of elastic component and accomplishes the cooperation until first location portion and second location portion reconnect, and simultaneously, outside connecting portion were pushed out the wear hole by the guide part, the key cap got back to initial position, realizes the resilience of key cap promptly. Through the location cooperation of first location portion and second location portion for lead the core and can accurately reset, eliminated and led the skew and/or the deflection that core and key cap produced when kick-backing, the key cap can accurately get back to the position of well centre and can not take place crooked promptly, has just also avoided the dead problem of card that the key cap kick-backs the in-process and appears.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic overall structure diagram of a reset-centering structure of a key switch according to an embodiment of the present application.

Fig. 2 is an exploded schematic view of the reset-centering structure of the key switch shown in fig. 1.

Fig. 3 is a partial cutaway view of the housing of the reset-to-center configuration of the push switch shown in fig. 1.

Fig. 4 is a schematic structural diagram of the guide core of the reset-centering structure of the key switch shown in fig. 2.

Fig. 5 is a schematic structural view of the guiding core of the reset-centering structure of the key switch shown in fig. 4 at another angle.

FIG. 6 is a schematic diagram of a key cap in a tilted state after resetting in the prior art.

Fig. 7 is a schematic diagram of a key cap in a center position after resetting of a resetting centering structure of a key switch provided in an embodiment of the present application.

Fig. 8 is a schematic structural view of the upper housing of the reset-centering structure of the key switch shown in fig. 2.

Fig. 9 is a schematic structural view of the upper housing of the reset-centering structure of the key switch shown in fig. 8 at another angle.

Fig. 10 is a schematic structural view of a lower case of the reset-to-center structure of the key switch shown in fig. 2.

10. A housing; 20. a guide core; 30. a keycap; 40. an elastic member;

11. an accommodating cavity; 12. perforating holes; 13. a guide groove; 14. a second positioning portion; 15. a hollow column;

141. positioning a groove; 1411. a third inclined plane; 1412. a fourth slope;

21. a connecting portion; 22. a guide portion; 23. a first positioning portion;

221. a guide projection; 222. a guide post;

231. positioning the projection; 2311. a first inclined plane; 2312. a second inclined plane;

101. an upper housing; 1011. a slot; 1012. a hook;

102. a lower housing; 1021. a plug-in; 1022. a clamping groove.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides a reset centering structure of a key switch, which is used in cooperation with a key cap 30, as shown in fig. 1 to 4, the reset centering structure of the key switch comprises a shell 10, a guide core 20 and an elastic element 40, wherein the shell 10 is provided with an accommodating cavity 11, and the surface of the shell 10 is provided with a through hole 12 communicated with the accommodating cavity 11; the guide core 20 is provided with a guide part 22 and a connecting part 21 which are connected, the guide part 22 is arranged in the accommodating cavity 11, and the connecting part 21 is arranged in the through hole 12 in a penetrating way and is used for being connected with the keycap 30; two ends of the elastic piece 40 are respectively connected with the inner wall of the accommodating cavity 11 and the guide part 22, and are used for pushing the connecting part 21 out of the through hole 12 so as to realize the rebound of the keycap 30; the side wall of the accommodating cavity 11 is provided with a guide groove 13, the side surface of the guide part 22 is provided with a guide protrusion 221, the guide protrusion 221 is slidably connected to the guide groove 13, the end surface of the guide protrusion 221, which is close to the through hole 12, is provided with a first positioning part 23, and the wall of the guide groove 13 is provided with a second positioning part 14 matched with the first positioning part 23.

In the embodiment of the present application, when a pressing force is applied to the key cap 30, the key cap 30 drives the guide protrusion 221 of the guide portion 22 to slide in the guide groove 13 through the connecting portion 21, and the first positioning portion 23 and the second positioning portion 14 are separated immediately, in this process, the guide portion 22 overcomes the resistance of the elastic member 40 and is far away from the through hole 12; when the pressing force applied to the key cap 30 is withdrawn, the guiding portion 22 drives the guiding protrusion 221 to return in the guiding groove 13 under the pushing force of the elastic member 40 until the first positioning portion 23 and the second positioning portion 14 are reconnected to complete the matching, and at the same time, the connecting portion 21 is pushed out of the through hole 12 by the guiding portion 22, and the key cap 30 returns to the initial position, that is, the key cap 30 is rebounded. Through the positioning cooperation of the first positioning part 23 and the second positioning part 14, the guide core 20 can be accurately reset, the deviation and/or deflection generated when the guide core 20 and the key cap 30 rebound is eliminated, namely, the key cap 30 can accurately return to the middle position without deflection, and the problem of jamming of the key cap 30 in the rebound process is also avoided.

Although the guide groove 13 has a limiting effect on the guide protrusion 221, a gap in matching often exists between the guide groove 13 and the guide protrusion 221 to ensure that the guide protrusion 221 has certain flexibility, so that the guide protrusion 221 can smoothly slide in the guide groove 13, and the arrangement of the gap also reduces the sliding wear of the guide protrusion 221 and the guide groove 13, which is beneficial to improving the service life of the key. Due to the gap, when the guide portion 22 rebounds, the guide protrusion 221 may not move completely along the center line of the guide slot 13, but may be biased to one side of the guide slot 13, resulting in the deflection and/or deflection of the guide core 20, and thus the key cap 30. The offset means that the center line of the guide core 20 after rebounding does not coincide with the center line of the guide core 20 when the guide core 20 is at the center position, and the offset means that the center line of the guide core 20 after rebounding coincides with the center line of the guide core 20 when the guide core 20 is at the center position, but the guide core 20 rotates around the center line by a certain angle. Because the existence in clearance, lead core 20 and key cap 30 and probably take place to squint, also probably take place to deflect, also probably take place to squint or deflect simultaneously, and the cooperation of first location portion 23 and second location portion 14 in this application plays the effect of accurate location to leading core 20 and key cap 30, can correct the skew and/or the deflection of leading core 20 for the central line of leading core 20 after rebounding coincides with the central line of leading core 20 when the positive position, thereby has solved the crooked technical problem of key cap 30.

In the embodiment of the present application, the specific structure of the connecting portion 21 is not limited, and the design can be flexibly made according to the structure of the key cap 30 provided by the user, so that the centering structure of the key switch provided by the embodiment of the present application can be adapted to various types of key caps 30 on the market. The connection manner of the connection portion 21 and the key cap 30 may be plugging, clipping, welding or bonding, and is not limited specifically.

Further, as shown in fig. 3 to 5, the first positioning portion 23 is a positioning protrusion 231, a width a of the positioning protrusion 231 is gradually reduced in the rebound direction of the key cap 30, the second positioning portion 14 is a positioning groove 141, a width b of the positioning groove 141 is gradually reduced in the rebound direction of the key cap 30, and the positioning protrusion 231 is used for being inserted into the positioning groove 141. The position and direction in which the positioning protrusion 231 is disposed are determined according to the direction in which the key cap 30 rebounds, and in the direction in which the key cap 30 rebounds, the positioning protrusion 231 should be disposed in front of the guide protrusion 221, i.e., the positioning protrusion 231 is closer to the key cap 30 than the guide protrusion 221. Use the vertical rebound upwards of key cap 30 as an example, the setting of location arch 231 is at the upper surface of direction arch 221, positioning groove 141 also sets up the upper wall surface at guide way 13 correspondingly, from the bottom up, the width a of location arch 231 reduces gradually, the width b of positioning groove 141 also reduces gradually, thus, the effect that inwards draws in can be played, when location arch 231 contacts with positioning groove 141 promptly, can be along the cell wall of positioning groove 141 toward the direction motion that the width reduces, be close to the central point of positioning groove 141 gradually, finally make the central line of location arch 231 accomplish the coincidence with the central line of positioning groove 141, the accurate location of location arch 231 has been realized promptly, just also realize leading the accurate location of core 20, make core 20 and key cap 30 get back to the position in the centre, the crooked problem of key cap 30 has been solved. Preferably, the positioning protrusion 231 and the positioning groove 141 are completely matched in shape, so that the accuracy and stability of the resetting of the positioning protrusion 231 can be improved. The width a of the positioning protrusion 231 and the width b of the positioning groove 141 are both gradually reduced, and the transition is slow, so that sudden change is avoided, the resetting of the guide core 20 is smoother, and the phenomenon that the guide core 20 is blocked and cannot rebound normally due to the fact that the positioning protrusion 231 cannot be centered with the positioning groove 141 is also avoided.

Further, in the direction of springback of the key cap 30, the decrease of the width a of the positioning protrusion 231 and the width b of the positioning groove 141 may be linear or non-linear, that is, the two opposite side surfaces of the positioning protrusion 231 in the width a direction thereof may be a plane inclined toward the center thereof or an arc inclined toward the center thereof. When the two opposite side surfaces of the positioning protrusion 231 in the width a direction are planes inclined toward the center thereof, the two opposite side surfaces of the positioning groove 141 in the width b direction are also planes inclined toward the center thereof, and when the two opposite side surfaces of the positioning protrusion 231 in the width a direction are arc surfaces inclined toward the center thereof, the two opposite side surfaces of the positioning groove 141 in the width b direction are also arc surfaces inclined toward the center thereof, so that the accuracy and stability of the resetting of the positioning protrusion 231 can be improved.

When the two opposite side surfaces of the positioning protrusion 231 in the width a direction are inclined planes toward the center thereof, the positioning protrusion 231 may be a trapezoidal protrusion or a triangular protrusion, when the positioning protrusion 231 is a trapezoidal protrusion, the positioning groove 141 corresponds to a trapezoidal groove, and when the positioning protrusion 231 is a triangular protrusion, the positioning groove 141 corresponds to a triangular groove. The following description will be made by taking the positioning protrusion 231 as a trapezoidal protrusion and the positioning groove 141 as a trapezoidal groove as an example: as shown in fig. 3 and 4, the positioning protrusion 231 is disposed on the upper side of the guide protrusion 221, the cross section of the positioning protrusion 231 in the longitudinal direction is trapezoidal, the two opposite side surfaces of the positioning protrusion 231 in the width a direction thereof are respectively a first inclined surface 2311 and a second inclined surface 2312, correspondingly, the positioning groove 141 is disposed above the guide groove 13, the cross section of the positioning groove 141 in the longitudinal direction is trapezoidal, the two opposite side surfaces of the positioning groove 141 in the width b direction thereof are respectively a third inclined surface 1411 and a fourth inclined surface 1412, the third inclined surface 1411 is engaged with the first inclined surface 2311, and the fourth inclined surface 1412 is engaged with the second inclined surface 2312. In the rebounding process, when the guide protrusion 221 tilts towards the groove wall of the positioning groove 141 located on the same side as the third inclined surface 1411, the first inclined surface 2311 first contacts with the third inclined surface 1411, and at this time, the second inclined surface 2312 and the fourth inclined surface 1412 are in a separated state, under the action of inward folding, the first inclined surface 2311 moves obliquely upward along the third inclined surface 1411 and finally completely fits with the third inclined surface 1411, meanwhile, the second inclined surface 2312 and the fourth inclined surface 1412 are changed from a separated state to a completely fitted state, the upper side surface of the positioning protrusion 231 and the upper groove wall of the positioning groove 141 are also changed from a separated state to a completely fitted state, at this time, the center line of the positioning protrusion 231 coincides with the center line of the positioning groove 141, that is, the guide core 20 and the key cap 30 are both located at the center; in the rebounding process, when the guide protrusion 221 inclines to the groove wall of the positioning groove 141 located on the same side as the fourth inclined surface 1412, the second inclined surface 2312 first contacts with the fourth inclined surface 1412, at this time, the first inclined surface 2311 and the third inclined surface 1411 are in a separated state, under the action of inward folding, the second inclined surface 2312 moves obliquely upward along the fourth inclined surface 1412 and finally completely fits with the fourth inclined surface 1412, at the same time, the first inclined surface 2311 and the third inclined surface 1411 are changed from the separated state to the completely fitted state, the upper side surface of the positioning protrusion 231 and the upper groove wall of the positioning groove 141 are also changed from the separated state to the completely fitted state, at this time, the center line of the positioning protrusion 231 coincides with the center line of the positioning groove 141, that is, the guide core 20 and the key cap 30 are both located at the right center.

Fig. 6 is a schematic diagram of the keycap 30 in a deflected state after being reset in the prior art, and the reset centering structure of the key switch provided in the embodiment of the present application can eliminate deflection of the keycap 30, and the specific process is as follows: when the guide core 20 deflects counterclockwise in the process of rebounding, the first inclined surface 2311 first contacts with the third inclined surface 1411, and the first inclined surface 2311 is inclined to the third inclined surface 1411, at this time, the second inclined surface 2312 and the fourth inclined surface 1412 are in a separated state, under the limiting action of the third inclined surface 1411, the guide core 20 rotates clockwise, meanwhile, the first inclined surface 2311 and the second inclined surface 2312 both rotate clockwise with the central line of the guide core 20 as an axis, finally, the first inclined surface 2311 and the third inclined surface 1411 are completely attached, the second inclined surface 2312 and the fourth inclined surface 1412 are changed from a separated state to a completely attached state, the upper side surface of the positioning protrusion 231 and the upper groove wall of the positioning groove 141 are also changed from a separated state to a completely attached state, so that the deflection of the guide core 20 and the keycap 30 is eliminated, and the keycap 30 is reset to a central position; similarly, when the guide core 20 deflects clockwise in the process of rebounding, the second inclined surface 2312 first contacts with the fourth inclined surface 1412, and the second inclined surface 2312 is inclined to the fourth inclined surface 1412, at this time, the first inclined surface 2311 and the third inclined surface 1411 are in a separated state, under the restriction action of the fourth inclined surface 1412, the guide core 20 rotates counterclockwise, at the same time, the first inclined surface 2311 and the second inclined surface 2312 both rotate counterclockwise with the center line of the guide core 20 as an axis, and finally, the second inclined surface 2312 and the fourth inclined surface 1412 are completely attached, the first inclined surface 2311 and the third inclined surface 1411 are changed from the separated state to the completely attached state, and the upper side surface of the positioning protrusion 231 and the upper groove wall of the positioning groove 141 are also changed from the separated state to the completely attached state, so that the deflection of the guide core 20 and the key cap 30 is eliminated, as shown in fig. 7, and the key cap 30 is reset to the middle position.

Preferably, the positioning protrusion 231 is an isosceles trapezoid protrusion, and the positioning slot 141 is an isosceles trapezoid slot, that is, the first inclined surface 2311 and the second inclined surface 2312 have the same shape and the same degree of inclination toward the center, and correspondingly, the third inclined surface 1411 and the fourth inclined surface 1412 have the same shape and the same degree of inclination toward the center. Like this, when the offset of leading core 20 is fixed, no matter what side is deflected to leading core 20, the cooperation stroke homoenergetic of location arch 231 and constant head tank 141 equals to make the resilience of leading core 20 and key cap 30 reset more reliable and more stable. In addition, the device has the advantages of regular shape, simple structure, easy processing and the like.

Wherein, the cooperation between the last lateral surface of location arch 231 and the last cell wall of constant head tank 141 has played the limiting displacement to location arch 231 on vertical, simultaneously, also can avoid stress concentration, and the impulsive impact force when can kick-backing to location arch 231 carries out effectual dispersion, is favorable to improving key switch's the reliability of returning to the well structure that resets. In some embodiments, the upper side of the positioning protrusion 231 may not be provided, that is, the positioning protrusion 231 is a triangular protrusion, the cross section of the positioning protrusion 231 in the longitudinal direction is triangular, and correspondingly, the positioning groove 141 is a triangular groove, and the cross section of the positioning groove 141 in the longitudinal direction is triangular, so that the positioning protrusion 231 and the positioning groove 141 cooperate to position the guide core 20 and limit the guide core.

When the opposite two side surfaces of the positioning protrusion 231 in the width a direction thereof are arc surfaces inclined toward the center thereof, on the basis of the trapezoidal protrusion, both the first inclined surface 2311 and the second inclined surface 2312 are set as arc surfaces, and correspondingly, both the third inclined surface 1411 and the fourth inclined surface 1412 of the trapezoidal groove are set as arc surfaces instead. Similarly, the upper side of the positioning protrusion 231 may not be provided, that is, the positioning protrusion 231 is a semicircular protrusion, the section of the positioning protrusion 231 in the longitudinal direction is semicircular, correspondingly, the positioning groove 141 is a semicircular groove, and the section of the positioning groove 141 in the longitudinal direction is semicircular.

Further, as shown in fig. 3 to 5, the positioning protrusion 231 is located at the middle position in the width c direction of the guide protrusion 221, the maximum width of the positioning protrusion 231 is smaller than the width c of the guide protrusion 221, the upper side surface of the guide protrusion 221 is formed with a flat surface on both sides of the positioning protrusion 231, correspondingly, the positioning groove 141 is located right above the guide groove 13, the maximum width of the positioning groove 141 is smaller than the width d of the guide groove 13, and the upper groove wall of the guide groove 13 is formed with a flat surface on both sides of the guide groove 13. Like this, can play the limiting displacement to guide protrusion 221 and location arch 231 on vertical, simultaneously, can avoid stress concentration, can carry out effectual dispersion to the impulsive impact force when guide protrusion 221 kick-backs, be favorable to improving key switch's the reliability of returning to the well structure that resets.

Further, as shown in fig. 2, the guide protrusions 221 are disposed on two opposite sides of the guide portion 22, the guide grooves 13 are disposed on two opposite sides of the receiving cavity 11, and the guide protrusions 221 are slidably connected with the guide grooves 13 in a one-to-one correspondence manner. Thus, the rebound resetting of the guide core 20 and the key cap 30 can be more stable and reliable. Specifically, the number of the guide protrusions 221 and the number of the guide grooves 13 may be two or four. When the number of the guide protrusions 221 and the guide grooves 13 is two, the two guide protrusions 221 may be respectively disposed on the front and rear sides or the left and right sides of the guide portion 22, and correspondingly, the two guide grooves 13 may be respectively disposed on the front and rear side walls or the left and right side walls of the accommodating chamber 11; when the number of the guide protrusions 221 and the guide grooves 13 is four, the four guide protrusions 221 may be respectively disposed on the front, rear, left, and right sides of the guide portion 22, and correspondingly, the four guide grooves 13 may be respectively disposed on the front, rear, left, and right sidewalls of the accommodating chamber 11; the four guide protrusions 221 may be equally divided into two groups, two groups of guide protrusions 221 are respectively disposed on the front and rear sides or the left and right sides of the guide portion 22, two guide protrusions 221 in each group are disposed side by side, correspondingly, the four guide grooves 13 are equally divided into two groups, two groups of guide grooves 13 are respectively disposed on the front and rear side walls or the left and right side walls of the accommodating cavity 11, and two guide grooves 13 in each group are disposed side by side.

When the guide portion 22 is a cylinder and the inner sidewall of the receiving cavity 11 is a cylinder, the plurality of guide protrusions 221 may be uniformly distributed on the side surface of the guide portion 22 along the circumferential direction, and correspondingly, the equal number of guide grooves 13 may be uniformly distributed on the inner sidewall of the receiving cavity 11 along the circumferential direction.

When the guiding portion 22 is a triangular prism and the accommodating cavity 11 is a triangular prism, one or more guiding protrusions 221 are respectively disposed on three side surfaces of the guiding portion 22, and correspondingly, a corresponding number of guiding grooves 13 are respectively disposed on three side wall surfaces of the accommodating cavity 11 connected end to end.

Further, as shown in fig. 2, the bottom surface of the guiding portion 22 facing away from the connecting portion 21 is provided with a guiding post 222, the receiving cavity 11 is provided with a hollow post 15, the guiding post 222 is inserted into the hollow post 15, and the elastic member 40 is sleeved outside the hollow post 15. Under the thrust of the elastic member 40, the hollow column 15 can guide the guide column 222 to rebound upwards, which is beneficial to reducing the deflection degree of the guide core 20 and the key cap 30. Outside hollow post 15 was located to elastic component 40 cover, hollow post 15 played limiting displacement to elastic component 40, prevent that elastic component 40 is crooked and then lead to the key cap 30 crooked, wherein, elastic component 40 is the spring, the spring housing is established outside hollow post 15, the both ends butt respectively on accepting the lower wall face and the guide part 22 of chamber 11 of spring, like this when pressing key cap 30, the spring receives the compression, after pushing down the effort on key cap 30 withdraws from, guide core 20 upwards moves under spring elasticity recovery effect, thereby realize the resilience of key cap 30.

Further, as shown in fig. 2, the housing 10 is a split structure, and includes an upper housing 101 and a lower housing 102, the upper housing 101 and the lower housing 102 are fastened together to form an accommodating cavity 11, the through hole 12 is disposed at the top of the upper housing 101, and the hollow column 15 is disposed at the bottom of the lower housing 102. The shell 10 is of a split structure, and has the advantages of simple structure, easiness in processing, convenience in maintenance and the like. Specifically, referring to fig. 8 to 10, two guide grooves 13 are respectively disposed on two opposite inserts 1021 of the lower housing 102, two opposite sides of the upper housing 101 are respectively provided with an insertion groove 1011, and the positioning groove 141 is disposed above the insertion groove 1011. In assembling, the two opposite inserts 1021 of the lower case 102 are inserted into the two opposite slots 1011 of the upper case 101, respectively, so as to complete the combination of the guide groove 13 and the positioning groove 141.

Furthermore, as shown in fig. 8 to 10, the lower housing 102 is provided with a locking groove 1022, the upper housing 101 is provided with a locking hook 1012 matched with the locking groove 1022, and the locking of the upper housing 101 and the lower housing 102 is realized by the matching of the locking hook 1012 and the locking groove 1022, which has the advantages of simple structure, easy assembly and disassembly, and the like. The number of the hooks 1012 is not limited, and can be selected according to the specific structure of the upper casing 101 and the lower casing 102, in the embodiment of the present application, the number of the hooks 1012 is four, and the four hooks 1012 are respectively located at four corners of the upper casing 101, so as to firmly fix the upper casing 101 and the lower casing 102.

In another embodiment of this application, second location portion is the location arch, and in the resilience direction of key cap, the bellied width crescent of location, first location portion is the constant head tank, and in the resilience direction of key cap, the width crescent of constant head tank, the location arch is used for inserting in the constant head tank, and the theory of operation is the same with foretell embodiment, and this place is no longer repeated.

The embodiment of the application also provides a keyboard, which comprises the reset centering structure of the key switch provided by each embodiment.

The embodiment of the application also provides a computer which comprises the keyboard provided by the embodiment.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a key switch's structure of going back to that resets for use with the key cap cooperation, its characterized in that: comprises a shell, a guide core and an elastic piece,

the shell is provided with an accommodating cavity, and the surface of the shell is provided with a through hole communicated with the accommodating cavity;

the guide core is provided with a guide part and a connecting part which are connected, the guide part is arranged in the accommodating cavity, and the connecting part is arranged in the through hole in a penetrating way and is used for being connected with the keycap;

two ends of the elastic piece are respectively connected with the inner wall of the accommodating cavity and the guide part and used for pushing the connecting part out of the penetrating hole so as to realize the resilience of the keycap;

the lateral wall of accepting the chamber is provided with the guide way, the side of guide part is provided with the direction arch, direction protruding sliding connection in the guide way, the direction arch is close to be provided with first location portion on the terminal surface of wearing to establish the hole, be provided with on the cell wall of guide way with the second location portion of first location portion looks adaptation.

2. The reset-to-center structure of a key switch according to claim 1, wherein: the first positioning part is a positioning bulge, the width of the positioning bulge is gradually reduced in the rebound direction of the keycap, the second positioning part is a positioning groove, the width of the positioning groove is gradually reduced in the rebound direction of the keycap, and the positioning bulge is used for being inserted into the positioning groove;

or, the second location portion is a location protrusion, the width of the location protrusion gradually increases in the rebound direction of the key cap, the first location portion is a location groove, the width of the location groove gradually increases in the rebound direction of the key cap, and the location protrusion is used for being inserted into the location groove.

3. The key switch reset-back structure according to claim 2, wherein: the positioning bulge is a trapezoidal bulge, and the positioning groove is a trapezoidal groove.

4. The key switch reset-back structure according to claim 2, wherein: the positioning protrusion is arranged on the positioning protrusion, two opposite side faces in the width direction of the positioning protrusion are arc faces, and two opposite side faces in the width direction of the positioning groove are arc faces.

5. The key switch reset-centering structure according to claim 2, wherein: when the first positioning part is a positioning bulge and the second positioning part is a positioning groove, the positioning bulge is positioned in the middle of the width direction of the guide bulge, and the maximum width of the positioning bulge is smaller than the width of the guide bulge.

6. A reset-to-center structure of a key switch according to any one of claims 1 to 5, characterized in that: the relative both sides of guide part all are provided with the direction arch, the relative both sides wall of acceping the chamber all is provided with the guide way, the direction arch with the guide way one-to-one corresponds sliding connection.

7. The key switch reset-centering structure according to any one of claims 1 to 5, wherein: the guide portion dorsad the bottom surface of connecting portion is provided with the guide post, it is provided with hollow post to accept the intracavity, the guide post inserts in the hollow post, the elastic component cover is located outside the hollow post.

8. A reset-to-center structure of a key switch according to any one of claims 1 to 5, characterized in that: the casing includes casing and lower casing, go up the casing with enclose after the casing lock establishes the formation down accept the chamber, the through-going hole sets up the top of going up the casing.

9. A keyboard, comprising: reset-centering structure comprising a key switch according to any one of claims 1 to 8.

10. A computer, characterized by: comprising the keyboard of claim 9.