Key structure

Abstract

The utility model discloses a key structure. The key structure comprises a cross key; the base is arranged in the cross key; the metal sheet is arranged between the upper surface of the base and the inner side surface of the cross key; the spring is arranged in the middle of the base, the spring is provided with a top end and a connecting end, the top end is in contact with the lower surface of the metal sheet, and the bottom end of the spring extends downwards to form the connecting end; the elastic piece is arranged on the lower surface of the base, and the connecting end penetrates through the elastic piece; and the circuit board is arranged on the lower surface of the elastic piece, the connecting end is fixed on the circuit board, the connecting end is electrically connected with the circuit board, the circuit board is conducted with the spring, and the top surface is in contact with the lower surface of the metal sheet, so that the circuit board is conducted with the metal sheet. Therefore, the key structure of the utility model can increase the induction effect.

Description

Technical Field

[0001] The utility model relates to a key structure, in particular to a key structure capable of enhancing the induction effect. Background Art

[0002] The cross key is a standard component in game controllers, and most game controllers are equipped with cross keys. The cross key includes four keys with different functions and is used for moving in four directions: up, down, left, and right.

[0003] Chinese Patent Publication No. 113691252 discloses "a touch key and a PCB board", which includes a conductive key, a conductive elastic member, a limiting member, a base, and a metal pin. The conductive key is connected to the base through the conductive elastic member and is also connected to the base through the limiting member. The metal pin is connected to the base and is in contact with the conductive elastic member. When the conductive key is pressed downward, the conductive elastic member is compressed, causing the distance between the conductive key and the base to shorten.

[0004] However, although the above-mentioned conductive elastic member serves as a conductor, due to the shape of the conductive elastic member, the contact area between the conductive key and the conductive elastic member is limited.

[0005] Therefore, it is necessary to provide a key structure capable of enhancing the induction effect. Summary of the Invention

[0006] The purpose of the utility model is to provide a key structure aiming at the defects and deficiencies existing in the prior art.

[0007] To achieve the above purpose, the utility model discloses a key structure, including: a cross key; a base disposed inside the cross key; a metal sheet disposed between the upper surface of the base and the inner side surface of the cross key; a spring disposed in the middle of the base, the spring having a top end and a connection end, the top end being in contact with the lower surface of the metal sheet, and the bottom end of the spring extending downward to form the connection end; an elastic member disposed on the lower surface of the base, the connection end passing through the elastic member; and a circuit board disposed on the lower surface of the elastic member, the connection end being fixed to the circuit board. Wherein, the connection end is electrically connected to the circuit board, the circuit board is electrically connected to the spring, and the top surface is in contact with the lower surface of the metal sheet, so that the circuit board is electrically connected to the metal sheet.

[0008] As a further improvement, the cross key is provided with a top wall, the top wall extends downward to form several side walls, and opposite ends of the several side walls extend inward to form several connecting walls. The top wall, the several side walls, and the several connecting walls form the cross key.

[0009] As a further improvement, an inner wall surface is provided on the inner side of each of the side walls. A plurality of the inner wall surfaces extend inward to form a plurality of bumps. The metal sheet forms four main body parts in four directions respectively. An indentation is formed by inward depression at the edge of each of the main body parts, and the indentation is clamped on the bumps.

[0010] As a further improvement, an inner wall surface is provided on the inner side of the top wall. The inner wall surface extends downward to form a first convex part. Four second convex parts are formed by the first convex part in four directions respectively. One ends of a plurality of the second convex parts are connected to the first convex part. The lower surface of the first convex part is flush with the lower surfaces of a plurality of the second convex parts. The upper surface of the metal sheet is fixed on the first convex part and a plurality of the second convex parts.

[0011] As a further improvement, the base is provided with a base seat. Four protruding parts are formed by the base seat in four directions respectively. The plurality of protruding parts correspond to the plurality of main body parts of the metal sheet. The lower surfaces of the plurality of main body parts are fixed on the upper surfaces of the plurality of protruding parts. A positioning block extends outward at the bottom end of the outer side surface of each of the protruding parts. The plurality of positioning blocks abut against the lower surfaces of the plurality of bumps of the cross key.

[0012] As a further improvement, the inner wall surface of the top wall extends downward to form a convex column. The convex column is formed inside the first convex part. The metal sheet is provided with a through hole penetrating the upper and lower surfaces of the main body part. The base is provided with an assembly hole penetrating the upper and lower surfaces of the base seat. The spring is arranged in the assembly hole. The through hole corresponds to the assembly hole. The convex column passes through the through hole and the assembly hole.

[0013] As a further improvement, a pressing part extends downward from the lower surface of each of the protruding parts. A retaining wall extends downward from the lower surface of each of the protruding parts. The retaining wall is arranged on one side of the pressing part. The plurality of retaining walls are closer to the spring than the plurality of pressing parts.

[0014] As a further improvement, a plurality of key columns extend upward from the upper surface of the elastic member. The plurality of key columns correspond to the plurality of pressing parts of the base. The retaining wall is arranged on one side of the key columns. The spring is arranged between the plurality of key columns.

[0015] As a further improvement, the present utility model discloses a key structure, comprising: a key; a metal sheet connected to the inner side surface of the key; a base disposed within the key; a conductive elastic member disposed within the key, with the top end of the conductive elastic member connected to the metal sheet and a connection end provided at the bottom end of the conductive elastic member; a circuit board electrically connected to the connection end; and an elastic member disposed between the base and the circuit board, with the welding end passing through the elastic member.

[0016] As a further improvement, the present utility model discloses a key structure, comprising: a circuit board; an elastic member disposed on the circuit board; a base disposed on the elastic member; a key disposed on the base; a metal sheet connected to the inner side surface of the key; and a conductive elastic member disposed within the key, with the top end of the conductive elastic member connected to the metal sheet, the bottom end of the conductive elastic member connected to the elastic member, and a connection end extending downward from the bottom end of the conductive elastic member, with the connection end passing through the elastic member and electrically connected to the circuit board.

[0017] As described above, the upper surface of the metal sheet of the key structure of the present utility model is fixed by ultrasonic welding to the first convex portion and several of the second convex portions, and the lower surface of the metal sheet is fixed by ultrasonic welding to the upper surfaces of several of the protruding portions. The connection end of the spring is electrically connected to the circuit board, the circuit board is in conduction with the spring, and the top end of the spring contacts the lower surface of the main body portion of the metal sheet, enabling conduction between the circuit board and the metal sheet. Therefore, the key structure of the present utility model can enhance the sensing effect. Description of the Drawings

[0018] Figure 1 Is a perspective view of the key structure of the present utility model.

[0019] Figure 2 Is an exploded view of the key structure of the present utility model.

[0020] Figure 3 Is an exploded view of the key structure of the present utility model from another angle.

[0021] Figure 4 Is a schematic diagram of the key structure of the present utility model.

[0022] Figure 5 Is the key structure of the present utility model along Figure 4 A sectional view taken along line V-V.

[0023] The descriptions of the reference numerals in the drawings are as follows.

[0024] Key structure 100 Cross key 1

[0025] Pressing area 10 Top wall 11

[0026] Side wall 12 and connecting wall 13

[0027] Inner wall surface 14 and inner side wall surface 15

[0028] First convex part 16 and second convex part 17

[0029] Bump 18 and convex column 19

[0030] Metal sheet 2 and main body part 21

[0031] Notch 22 and perforation 23

[0032] Base 3 and base 31

[0033] Protruding part 32 and assembly hole 33

[0034] Positioning block 34 and pressing part 35

[0035] Blocking wall 36 and spring 4

[0036] Top end 41 and connecting end 42

[0037] Elastic member 5 and key column 51

[0038] First through hole 52 and positioning column 53

[0039] Circuit board 6 and second through hole 61

[0040] Positioning hole 62 Detailed implementation mode

[0041] To illustrate in detail the technical content, structural features, achieved objectives and effects of the key structure 100 of the present utility model, the following examples are hereby cited and described in detail in conjunction with the drawings.

[0042] Please refer to Figures 1 to 3, the button structure 100 of the present utility model includes a cross key 1, a metal sheet 2, a base 3, a spring 4, an elastic member 5 and a circuit board 6. The cross key 1 covers the metal sheet 2 and the base 3, and the metal sheet 2 is disposed between the upper surface of the base 3 and the inner side surface of the cross key 1. In this embodiment, the metal sheet 2 is fixed between the base 3 and the cross key 1 by ultrasonic welding, but it is not limited to this in specific implementation. The spring 4 is disposed in the middle of the base 3, and one top end 41 of the spring 4 contacts the lower surface of the metal sheet 2. The elastic member 5 is disposed on the lower surface of the base 3. The circuit board 6 is disposed on the lower surface of the elastic member 5. In specific implementation, the cross key 1 can be changed into a button of other shapes such as a circular key or a square key, and the shape of the metal sheet 2 can be changed according to the shape of the inner wall surface of the button to enhance the sensing effect.

[0043] Please refer to Figures 2 to 5 , the cross key 1 is provided with four pressing areas 10 in four directions respectively. The cross key 1 is provided with a top wall 11, several side walls 12, several connecting walls 13, an inner wall surface 14, several inner side wall surfaces 15, a first convex portion 16, several second convex portions 17, several bumps 18 and a convex column 19. The top wall 11 extends downward to form several side walls 12, and several side walls 12 are respectively disposed in four directions of the cross key 1. Opposite ends of several side walls 12 extend inward to form several connecting walls 13, and each connecting wall 13 is connected between two side walls 12. In this embodiment, the top wall 11, several side walls 12 and several connecting walls 13 form the cross key 1. Each pressing area 10 is surrounded by the top end of a part of the top wall 11, the top end of one side wall 12 and the top end of a part of the connecting wall 13. The inner wall surface 14 is disposed inside the top wall 11, and the inner side wall surface 15 is disposed inside each side wall 12. In specific implementation, if the cross key 1 is changed into a button of other shapes such as a circular key or a square key, the button can be composed of the top wall 11 and the side walls 12, thus omitting the connecting walls 13.

[0044] The middle of the inner wall surface 14 of the top wall 11 extends downward to form the first convex portion 16. In this embodiment, the first convex portion 16 is in a hollow circular shape. The first convex portion 16 extends in four directions respectively to form several second convex portions 17, and one end of several second convex portions 17 is connected to the first convex portion 16. In this embodiment, the second convex portion 17 is in a straight strip flat shape, and four second convex portions 17 are provided at the bottoms of the four pressing areas 10. The lower surface of the first convex portion 16 is flush with the lower surfaces of several second convex portions 17. In this embodiment, the upper surface of the metal sheet 2 is fixed by ultrasonic welding to the first convex portion 16 and several second convex portions 17, but it is not limited to this in specific implementation.

[0045] Several inner wall surfaces 15 of several side walls 12 extend inward to form several convex blocks 18, and several convex blocks 18 are connected to the other ends of several second convex portions 17. The corresponding mechanism of the metal sheet 2 is clamped to several convex blocks 18 to realize the positioning and fixation of the cross key 1 and the metal sheet 2. The middle of the inner wall surface 14 of the top wall 11 extends downward to form the convex column 19. The convex column 19 is formed inside the first convex portion 16, and the convex column 19 passes through the corresponding mechanism of the metal sheet 2 to realize the positioning and fixation of the cross key 1 and the metal sheet 2.

[0046] The metal sheet 2 is provided with several main body portions 21, several notches 22 and a perforation 23. The metal sheet 2 forms the main body portions 21 in four directions respectively. In this embodiment, the upper surfaces of several main body portions 21 are fixed by ultrasonic welding to the first convex portion 16 and several second convex portions 17, but it is not limited to this in specific implementation. The edge of each main body portion 21 is recessed inward to form the notch 22, and the notch 22 is clamped to the convex block 18 of the cross key 1 to realize the positioning and fixation of the metal sheet 2 and the cross key 1. The metal sheet 2 is provided with the perforation 23 penetrating the upper and lower surfaces of the main body portion 21. The convex column 19 of the cross key 1 passes through the perforation 23 to realize the positioning and fixation of the metal sheet 2 and the cross key 1. In specific implementation, if the cross key 1 is changed to other shaped keys such as a circular key or a square key, the shape of the metal sheet 2 can be changed according to the shape of the inner wall surface of the key. Therefore, the metal sheet 2 can have only one main body portion 21, and the shape of the main body portion 21 can be changed according to the shape of the inner wall surface of the key.

[0047] The base 3 is provided with a base 31, several protruding portions 32, an assembly hole 33, several positioning blocks 34, several pressing portions 35 and several retaining walls 36. The base 31 forms the protruding portions 32 in four directions respectively, and the several protruding portions 32 correspond to the several main body portions 21 of the metal sheet 2. The lower surface of the main body portion 21 of the metal sheet 2 is fixed to the upper surface of the several protruding portions 32 by ultrasonic welding, but it is not limited to this in specific implementation. The base 3 is provided with the assembly hole 33 penetrating the upper and lower surfaces of the base 31, the spring 4 is arranged in the assembly hole 33, and the through hole 23 of the metal sheet 2 corresponds to the assembly hole 33. The protruding column 19 of the cross key 1 passes through the through hole 23 of the metal sheet 2 and the assembly hole 33. The bottom end of the outer side surface of each protruding portion 32 extends outward to form the positioning block 34. The several positioning blocks 34 abut against the lower surfaces of the several protruding blocks 18 of the cross key 1 to achieve positioning and fixation of the base 3 and the cross key 1.

[0048] The lower surface of each protruding portion 32 extends downward to form the pressing portion 35, and the lower surface of the positioning block 34 extends downward to form the pressing portion 35. In this embodiment, the pressing portion 35 is a cross-shaped structure, but it is not limited to this in specific implementation. The pressing portion 35 is used to press the corresponding mechanism of the elastic member 5 to perform the movement of the orientation. The lower surface of each protruding portion 32 extends downward to form the retaining wall 36. The retaining wall 36 is arranged on one side of the pressing portion 35. In this embodiment, the several retaining walls 36 are closer to the spring 4 than the several pressing portions 35. The several retaining walls 36 are used to guide the base 3 to be accurately installed above the elastic member 5. In specific implementation, if the cross key 1 is changed to other shaped keys such as a circular key or a square key, the shape of the base 3 can be changed according to the shape of the inner wall surface of the key.

[0049] The spring 4 is provided with the top end 41 and a connection end 42. The bottom end of the spring 4 extends downward to form the connection end 42. The connection end 42 is electrically connected to the circuit board 6. The top end 41 contacts the lower surface of the main body portion 21 of the metal sheet 2, so that the circuit board 6 is conducted with the metal sheet 2, increasing the induction effect of the key structure 100 of the present invention. The spring 4 surrounds the outside of the protruding column 19, and the spring 4 is arranged in the assembly hole 33 of the base 3. In specific implementation, the spring 4 can be replaced by other conductive elastic members, such as a conductive sleeve made of a metal sheet or a conductive sleeve made of conductive plastic.

[0050] The elastic member 5 is provided with several key posts 51, a first through hole 52 and at least two positioning posts 53. In this embodiment, the elastic member 5 is provided with two positioning posts 53. The upper surface of the elastic member 5 extends upward to form several key posts 51. The several key posts 51 correspond to several pressing portions 35 of the base 3. The pressing portions 35 of the base 3 press down the key posts 51 to perform the movement of the orientation. The blocking walls 36 are arranged on one side of the key posts 51, and the several blocking walls 36 ensure that the several pressing portions 35 correspond to the several key posts 51. The spring 4 is arranged between the several key posts 51. The elastic member 5 is provided with the first through hole 52 penetrating the upper and lower surfaces of the elastic member 5. In this embodiment, the first through hole 52 is formed between the several key posts 51. The connecting end 42 of the spring 4 passes through the first through hole 52. The lower surface of the elastic member 5 extends downward to form two positioning posts 53, and the two positioning posts 53 are arranged in the corresponding mechanisms of the circuit board 6 to realize the positioning and fixation of the elastic member 5 and the circuit board 6. In specific implementation, if the cross key 1 is changed into a key with other shapes such as a circular key or a square key, only one key post 51 may be provided on the upper surface of the elastic member 5.

[0051] The circuit board 6 is provided with a second through hole 61 and at least two positioning holes 62. In this embodiment, the circuit board 6 is provided with two positioning holes 62. The circuit board 6 is provided with the second through hole 61 penetrating the upper and lower surfaces of the circuit board 6. The second through hole 61 corresponds to the first through hole 52 of the elastic member 5. The connecting end 42 of the spring 4 passes through the first through hole 52 and the second through hole 61 and is electrically connected to a contact point (not shown in the figure) of the circuit board to conduct the circuit board 6 and the spring 4. The circuit board 6 is provided with two positioning holes 62 penetrating the upper and lower surfaces of the circuit board 6. The second through hole 61 is located between the two positioning holes 62. The two positioning posts 53 of the elastic member 5 are arranged in the two positioning holes 62 to realize the positioning and fixation of the elastic member 5 and the circuit board 6.

[0052] As described above, the upper surface of the metal sheet 2 of the key structure 100 of the present invention is fixed by ultrasonic welding on the first convex portion 16 and several second convex portions 17, and the lower surface of the metal sheet 2 is fixed by ultrasonic welding on the upper surfaces of several protruding portions 32. The connecting end 42 of the spring 4 is electrically connected to the circuit board 6, the circuit board 6 is conducted with the spring 4, and the top end 41 of the spring 4 contacts the lower surface of the main body portion 21 of the metal sheet 2 to conduct the circuit board 6 and the metal sheet 2. Therefore, the key structure 100 of the present invention can enhance the sensing effect.

Claims

1. A key structure, characterized in that, Comprising: A cross key; A base disposed within the cross key; A metal sheet disposed between the upper surface of the base and the inner side surface of the cross key, the metal sheet forming four main portions in four directions respectively; a spring disposed in the middle of the base, the spring having a top end and a connection end, the top end contacting the lower surfaces of the four main portions, and the bottom end of the spring extending downward to form the connection end; An elastic member disposed on the lower surface of the base, the connection end passing through the elastic member; and a circuit board disposed on the lower surface of the elastic member, the connection end being fixed to the circuit board, wherein the connection end is electrically connected to the circuit board, the circuit board is electrically connected to the spring, the top end contacts the lower surfaces of the four main portions, and the circuit board is electrically connected to the metal sheet.

2. The key structure according to claim 1, wherein: The cross key has a top wall, the top wall extending downward to form a plurality of side walls, opposite ends of the plurality of side walls extending inward to form a plurality of connecting walls, and the top wall, the plurality of side walls and the plurality of connecting walls form the cross key.

3. The key structure according to claim 2, wherein: An inner side wall surface is provided on the inner side of each side wall, the plurality of inner side wall surfaces extending inward to form a plurality of protrusions, and a notch is formed by inward depression of the edge of each main portion, and the notch is clamped on the protrusion.

4. The key structure according to claim 3, characterized in that: An inner wall surface is provided on the inner side of the top wall, the inner wall surface extending downward to form a first protrusion, the first protrusion forming four second protrusions in four directions respectively, one ends of the plurality of second protrusions being connected to the first protrusion, the lower surface of the first protrusion being flush with the lower surfaces of the plurality of second protrusions, and the upper surface of the metal sheet being fixed on the first protrusion and the plurality of second protrusions.

5. The key structure according to claim 4, wherein: The base has a base portion, the base portion forming four protruding portions in four directions respectively, the plurality of protruding portions corresponding to the plurality of main portions of the metal sheet, the lower surfaces of the plurality of main portions being fixed on the upper surfaces of the plurality of protruding portions, and a positioning block extending outward from the bottom end of the outer side surface of each protruding portion, and the plurality of positioning blocks abutting against the lower surfaces of the plurality of protrusions of the cross key.

6. The key structure according to claim 5, characterized in that: The inner wall surface of the top wall extends downward to form a convex column, the convex column being formed within the first protrusion, the metal sheet having a through hole penetrating the upper and lower surfaces of the main portion, the base having an assembly hole penetrating the upper and lower surfaces of the base portion, the spring being disposed within the assembly hole, the through hole corresponding to the assembly hole, and the convex column passing through the through hole and the assembly hole.

7. The key structure according to claim 5, characterized in that: A pressing portion extends downward from the lower surface of each protruding portion, and a blocking wall extends downward from the lower surface of each protruding portion, the blocking wall being disposed on one side of the pressing portion, and the plurality of blocking walls being closer to the spring than the plurality of pressing portions.

8. The key structure according to claim 7, wherein: A plurality of key columns extend upward from the upper surface of the elastic member, the plurality of key columns corresponding to the plurality of pressing portions of the base, the blocking wall being disposed on one side of the key columns, and the spring being disposed between the plurality of key columns.

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