CN210897092U - Key mechanism and keyboard - Google Patents

Abstract

The utility model relates to an electron device switch mechanism technical field provides a key mechanism and keyboard, key mechanism, key core medium plate, conductive film, key core bottom plate, scissors foot subassembly, butt spare and key cap including range upon range of setting from top to bottom. The scissors foot subassembly includes scissors spare and lower scissors spare, goes up scissors spare and includes first body and two pin joint posts, and lower scissors spare includes the second body, has all seted up the pin joint hole on the relative both sides wall of second body. The second body extends into the first body which is an annular mechanism, and the two pivoting columns are respectively inserted into the corresponding pivoting holes. Because the pin joint post is located on the inside wall of first body, and the pin joint hole is located on the outside wall of second body, and the two is in case peg graft, then is difficult for separating, consequently, even in drop test, scissors foot subassembly also can keep complete state. The key mechanism is simple in overall structure, and is not easy to separate after assembly, and follow-up maintenance work is reduced.

Description

Key mechanism and keyboard

Technical Field

The utility model relates to an electron device switch mechanism technical field especially provides a key mechanism and have keyboard of this key mechanism.

Background

The key is an indispensable part of various electronic devices, and a signal can be sent by pressing the key so as to input an instruction to an electronic product.

Generally, there are many classifications of key mechanisms, in which the keys of the scissors structure have a thinner characteristic, i.e., the advantage of thinner thickness of the keyboard can be satisfied. However, the key structure of the existing scissor leg structure is complex, and if the key structure falls off in the using process, a professional can be required to finish the reassembling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a key mechanism aims at solving the problem that current key mechanism structure is complicated and difficult repacking.

In order to achieve the above object, the utility model adopts the following technical scheme: a key mechanism comprises a key core middle plate, a conductive film and a key core bottom plate which are arranged in an up-down laminated manner, the key core bottom plate is used for being electrically connected with a circuit board and comprises a scissor pin assembly arranged in the key core middle plate, an abutting piece penetrating through the scissor pin assembly and connected with the conductive film, and a key cap covering the scissor pin assembly and abutting against the abutting piece, the scissor foot assembly comprises an upper scissor piece and a lower scissor piece pivoted on the upper scissor piece, the upper scissor piece comprises a first body in an annular structure and two pivoting columns which are arranged on the inner side wall of the first body and are oppositely arranged, the lower scissors piece comprises a second body, two opposite side walls of the second body are respectively provided with a pin joint hole for the pin joint column to be inserted, the first body rotates around the pivot column relative to the second body to keep a horizontal state or a crossed state.

In one embodiment, one side of the key core middle plate facing the key core bottom plate is provided with two first grooves and two second grooves corresponding to the two first grooves, two opposite outer side walls of the first body are respectively provided with a first winding column, the first winding column is arranged in the first grooves, two opposite outer side walls of the second body are respectively provided with a second winding column, and the second winding column is arranged in the second grooves.

In one embodiment, the first groove or the second groove is a bar-shaped groove.

In one embodiment, the keycap comprises a cap body, two first clamping blocks and second clamping blocks corresponding to the first clamping blocks are arranged on one side of the cap body facing the scissor pin assembly, a side wall of the first body protrudes outwards to form a protruding block, the end, far away from the first body, of the protruding block is arranged on a first connecting column, two ends of the first connecting column are respectively clamped in the corresponding first clamping blocks, two opposite end sides of the second body are respectively provided with a second connecting column, and the two second connecting columns are respectively clamped in the corresponding second clamping blocks.

In an embodiment, the first clamping block is provided with a first accommodating groove for clamping the first connecting column and a second accommodating groove for sliding the connecting column into the first accommodating groove, an open end of the first accommodating groove and an open end of the second accommodating groove both face the conductive film, the second accommodating groove is communicated with the first accommodating groove, and an inner diameter of the second accommodating groove is smaller than an inner diameter of the first accommodating groove and a diameter of the first connecting column.

In one embodiment, the second body is disposed at an opening end of the second accommodating groove when the second body is in a horizontal state.

In one embodiment, the second clamping block is provided with a third accommodating groove for clamping the second connecting column, and an opening end of the third accommodating groove faces towards an inner side wall of the key core middle plate.

In one embodiment, the inner side wall of the first body is blocked at the opening end of the third accommodating groove when the inner side wall is in a horizontal state.

In one embodiment, a plurality of hot-melt columns are arranged between the key core middle plate and the key core bottom plate, and the key core middle plate is connected to the key core bottom plate through each hot-melt column.

The utility model has the advantages that: the utility model provides a key mechanism, wherein, the second body of the scissor foot component extends into the first body which is a ring-shaped mechanism, and the two pin-jointed columns of the first body are respectively inserted into the pin-jointed holes corresponding to the second body, thus, under the non-use state, the first body and the second body are kept in the horizontal state; and under the using state, the first body and the second body are pivoted and rotated around the pivoting column in opposite directions and are in a cross state. Because the pin joint post is located on the inside wall of first body, and the pin joint hole is located on the outside wall of second body, and the two is in case peg graft, then is difficult for separating, consequently, even in drop test, scissors foot subassembly also can keep complete state. The key mechanism is simple in overall structure, and is not easy to separate after assembly, and follow-up maintenance work is reduced.

The utility model also provides a keyboard, including the aforesaid button mechanism.

The utility model has the advantages that: the utility model provides a keyboard, on the basis that has above-mentioned button mechanism, when more frivolous, the button is difficult for the separation that drops, and life is longer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for 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 invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an exploded view of a key mechanism according to an embodiment of the present invention;

fig. 2 is an exploded view of a scissor assembly of the key mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a scissor assembly of the key mechanism according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a scissor assembly of the key mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a key core middle plate of a key mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a key mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a key cap of a key mechanism according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a key mechanism according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

the key mechanism 100, the scissor pin assembly 10, the key cap 20, the abutting piece 30, the key core middle plate 40, the conductive film 50, the key core bottom plate 60, the upper scissor piece 11, the lower scissor piece 12, the first body 111, the pivot post 11a, the second body 121, the pivot hole 12a, the first groove 41, the second groove 42, the first winding post 11b, the second winding post 12b, the cap body 21, the first clamping block 211, the second clamping block 212, the protruding block 112, the first connecting post 113, the second connecting post 122, the first accommodating groove 21a, the second accommodating groove 21b, the third accommodating groove 21c, and the hot-melt post 70.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 invention, and should not be construed as limiting the present invention.

In the description of the present invention, 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 indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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 invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 4, a key mechanism 100 according to an embodiment of the present invention includes a key core middle plate 40, a conductive film 50, a key core bottom plate 60, a scissor pin assembly 10 disposed in the key core middle plate 40, an abutting member 30 penetrating the scissor pin assembly 10 and connected to the conductive film 50, and a key cap 20 covering the scissor pin assembly 10 and abutting against the abutting member 30. The key core bottom plate 60 is used for electrically connecting with the circuit board, the scissor leg assembly 10 includes an upper scissor element 11 and a lower scissor element 12 pivoted to the upper scissor element 11, the upper scissor element 11 includes a first body 111 in an annular structure and two pivoting posts 11a disposed on the inner side wall of the first body 111 and disposed oppositely, the lower scissor element 12 includes a second body 121, pivot holes 12a for the pivoting posts 11a to be inserted are disposed on two opposite side walls of the second body 121, and the first body 111 rotates around the pivoting posts 11a relative to the second body 121 to maintain a horizontal state or a cross state.

In the embodiment of the present invention, the second body 121 of the scissors assembly 10 extends into the first body 111 of the ring-shaped mechanism, and the two pivot posts 11a of the first body 111 are respectively inserted into the corresponding pivot holes 12a of the second body 121, so as to refer to fig. 3, when the key assembly is not in use, the first body 111 and the second body 121 are kept horizontal; referring to fig. 4, in the use state, the first body 111 and the second body 121 are pivoted around the pivot post 11a in opposite directions to form a crossed state. Since the pivot post 11a is disposed on the inner sidewall of the first body 111 and the pivot hole 12a is disposed on the outer sidewall of the second body 121, the two are not easily separated once they are inserted, so that the scissor assembly 10 can maintain a complete state even in a drop test. The key mechanism 100 is simple in overall structure, and is not easy to separate after being assembled, so that follow-up maintenance work is reduced.

In the present embodiment, the second body 121 defines an opening for receiving the abutting member 30. Here, the abutting member 30 is a flexible silicone member, and satisfies a feeling of springback when the user presses the key cap 20.

Referring to fig. 2, 5 and 6, in the present embodiment, one side of the key center middle plate 40 facing the key center base plate 60 is provided with two first grooves 41 and two second grooves 42 corresponding to the two first grooves 41, two opposite outer side walls of the first body 111 are provided with a first winding column 11b, the first winding column 11b is disposed in the first groove 41, two opposite outer side walls of the second body 121 are provided with a second winding column 12b, and the second winding column 12b is disposed in the second groove 42. It can be understood that the scissor assemblies 10 are installed into the key center plate 40 from the back side of the key center plate 40, i.e. the side facing the key center base plate 60, and the open ends of the two first grooves 41 and the two second grooves 42 are blocked by the key center base plate 60, so that once the key center plate 40 and the key center base plate 60 are fastened, the scissor assemblies 10 cannot be removed, and the stability after installation is further improved. Specifically, the key core middle plate 40 is provided with an opening for accommodating the scissor assembly 10, and the two first grooves 41 and the two second grooves 42 are surrounded in the opening.

Preferably, the first groove 41 or the second groove 42 is a bar-shaped groove. Here, in order to ensure a sufficient translation space when the first body 111 and the second body 121 are in a crossed state, the first groove 41 or the second groove 42 is a strip-shaped groove opened along the translation direction, that is, the first winding column 11b or the second winding column 12b can translate in the corresponding strip-shaped groove. Preferably, referring to fig. 5, in the present embodiment, the first groove 41 is a strip-shaped groove.

Referring to fig. 2, 7 and 8, in the present embodiment, the key cap 20 includes a cap body 21, two first clamping blocks 211 and second clamping blocks 212 corresponding to the two first clamping blocks 211 are disposed on one side of the cap body 21 facing the scissor pin assembly 10, a side wall of the first body 111 protrudes outward to form a protruding block 112, an end of the protruding block 112 away from the first body 111 is disposed on a first connecting post 113, two ends of the first connecting post 113 are respectively clamped in the corresponding first clamping blocks 211, two opposite ends of the second body 121 are respectively disposed with a second connecting post 122, and the two second connecting posts 122 are respectively clamped in the corresponding second clamping blocks 212. It can be understood that, in order to avoid the cap body 21 from being separated from the first body 111 and the second body 121, two first clamping blocks 211 and two second clamping blocks 212 are respectively disposed on the cap body 21 to be connected with the corresponding first connecting post 113 and the second connecting post 122.

With continued reference to fig. 2, fig. 7 and fig. 8, specifically, the first locking block 211 is provided with a first receiving groove 21a for locking the first connecting post 113 and a second receiving groove 21b for sliding the connecting post into the first receiving groove 21a, an opening end of the first receiving groove 21b21a and an opening end of the second receiving groove 21b both face the conductive film 50, the second receiving groove 21b is communicated with the first receiving groove 21a, and an inner diameter of the second receiving groove 21b is smaller than an inner diameter of the first receiving groove 21a and a diameter of the first connecting post 113. It can be understood that the first connecting rod 113 firstly enters the second receiving groove 21b and then slides into the first receiving groove 21a, and since the inner diameters of the second receiving cavities are smaller than the inner diameter of the first receiving groove 21a and the diameter of the first connecting rod 113, the first connecting rod 113 is not easy to fall off once entering the first receiving groove 21 a.

With continued reference to fig. 7 and 8, preferably, the second body 121 covers the opening end of the second receiving groove 21b when in a horizontal state. Under a normal dropping condition, the scissor leg assembly 10 is in a non-use state, that is, the first body 111 and the second body 121 are in a horizontal stacking state, at this time, the second body 121 closes the opening end of the second accommodating groove 21b, and further, the cap body 21 is prevented from being separated from the scissor leg assembly 10.

Referring to fig. 2, 7 and 8, the second clamping block 212 is provided with a third receiving groove 21c for clamping the second connecting rod 122, and an opening end of the third receiving groove 21c faces an inner side wall of the key center middle plate 40. Here, the third receiving groove 21c is a strip-shaped groove, and the opening direction is a horizontal direction, so that the second connecting column 122 can slide in the third receiving groove 21c conveniently to satisfy that there is enough translation space when the first body 111 and the second body 121 are in a crossed state.

With continued reference to fig. 7 and 8, preferably, the inner side wall of the first body 111 is blocked at the opening end of the third receiving groove 21c when the inner side wall is in a horizontal state. Similarly, under a normal falling condition, the scissor leg assembly 10 is in a non-use state, that is, the first body 111 and the second body 121 are in a horizontally stacked state, at this time, the inner side wall of the first body 111 closes the opening end of the third accommodating groove 21c, and the cap body 21 is further prevented from being separated from the scissor leg assembly 10.

Referring to fig. 1 and 6, in the present embodiment, a plurality of heat-fusible pillars 70 are disposed between the key center middle plate 40 and the key center bottom plate 60, and the key center middle plate 40 is connected to the key center bottom plate 60 through each heat-fusible pillar 70. Here, each heat stake 70 is heated by a special heat stake arrangement to fuse the key core middle plate 40 and the key core bottom plate 60 together.

The utility model relates to a keyboard, including foretell key mechanism 100. On the basis of the key mechanism 100, the key is lighter and thinner, and meanwhile, the key is not easy to fall off and separate, and the service life is longer.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a key mechanism, includes key core medium plate, conducting film and the key core bottom plate of range upon range of setting from top to bottom, the key core bottom plate is used for and circuit board electric connection, its characterized in that: the key core comprises a scissor pin assembly arranged in a key core middle plate, a butt piece penetrating through the scissor pin assembly and connected to the conductive film, and a keycap covering the scissor pin assembly and abutting against the butt piece, wherein the scissor pin assembly comprises an upper scissor piece and a lower scissor piece pivoted to the upper scissor piece, the upper scissor piece comprises a first body in an annular structure and two pivoting columns arranged on the inner side wall of the first body and oppositely, the lower scissor piece comprises a second body, pivoting holes for the pivoting columns to be inserted are formed in two opposite side walls of the second body, and the first body rotates around the pivoting columns and relatively to the second body to keep a horizontal state or a cross state.

2. The key mechanism of claim 1, wherein: the key core middle plate is provided with two first grooves and two second grooves corresponding to the two first grooves respectively on one side facing the key core bottom plate, the two opposite outer side walls of the first body are provided with a first winding column respectively, the first winding column is arranged in the first grooves, the two opposite outer side walls of the second body are provided with a second winding column respectively, and the second winding column is arranged in the second grooves.

3. The key mechanism of claim 2, wherein: the first groove or the second groove is a strip-shaped groove.

4. A key mechanism according to any one of claims 1 to 3, wherein: the key cap includes the cap body, the cap body orientation one side of scissors foot subassembly is equipped with two first joint pieces and with two the corresponding second joint piece of first joint piece, a lateral wall of first body is outside protruding to be stretched and is formed a protruding piece of stretching, protruding piece of stretching is kept away from the tip of first body is equipped with a first spliced pole, the both ends of first spliced pole are blocked respectively and are located the correspondence in the first joint piece, the relative both ends of second body are equipped with a second spliced pole respectively, two the second spliced pole is blocked respectively and is located the correspondence in the second joint piece.

5. The key mechanism of claim 4, wherein: the first joint piece is provided with a first accommodating groove for supplying the joint of the first connecting column and a second accommodating groove for supplying the joint of the first connecting column, the first connecting column slides into the second accommodating groove of the first accommodating groove, the open end of the first accommodating groove and the open end of the second accommodating groove face towards the conductive film, the second accommodating groove is communicated with the first accommodating groove, and the inner diameter of the second accommodating groove is smaller than the inner diameter of the first accommodating groove and the diameter of the first connecting column.

6. The key mechanism of claim 5, wherein: the second body is arranged at the opening end of the second containing groove in a covering mode when the second body is in a horizontal state.

7. The key mechanism of claim 4, wherein: the second clamping block is provided with a third accommodating groove for clamping the second connecting column, and the opening end of the third accommodating groove faces towards the inner side wall of the key core middle plate.

8. The key mechanism of claim 7, wherein: the inner side wall of the first body is plugged at the opening end of the third accommodating groove when the inner side wall is in a horizontal state.

9. A key mechanism according to any one of claims 1 to 3, wherein: a plurality of hot melting columns are arranged between the key core middle plate and the key core bottom plate, and the key core middle plate is connected to the key core bottom plate through the hot melting columns.

10. A keyboard, comprising: comprising a key mechanism according to any one of claims 1 to 9.

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