CN102832066A

CN102832066A - Key structure

Info

Publication number: CN102832066A
Application number: CN2011101597622A
Authority: CN
Inventors: 江柏青
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-12-19

Abstract

The invention discloses a key structure. The key structure comprises a key cap, a base and a circuit board, wherein a positioning part and a stopping part are arranged on the key cap; a receiving part and a fastening part corresponding to the positioning part and the stopping part on the key cap are arranged on the base; the positioning part is arranged in the receiving part; an elastic element is arranged on the circuit board, fixed between the key cap and the base and used for driving the key cap to move relative to the base; and the fastening part is fastened on the stopping part and used for preventing the key cap from being separated from the base.

Description

Press-key structure

Technical field

The present invention relates to a kind of press-key structure, be meant a kind of press-key structure that is used on the keyboard especially.

Background technology

In all kinds of 3C Products, like desktop computer keyboard, laptop keyboard, various remote keypad etc. all are made up of several key arrangement.The button design that occurs on the market now generally comprises a pedestal, a circuit board, at least one keycap and at least two linkages, and assembly is formed more than at least five kinds altogether, and the material ratio of use is more, the structure more complicated.

Summary of the invention

In view of above content, be necessary to provide a kind of press-key structure simple in structure.

A kind of press-key structure; Comprise keycap, pedestal and circuit board; Said keycap is provided with location division and position-arresting part, and the location division of corresponding said keycap and position-arresting part are provided with housing piece and fastener on the said pedestal, and said location division is contained in the said housing piece; Said circuit board is provided with flexible member; Said flexible member is fixed between said keycap and the said pedestal, and said flexible member orders about said keycap and moves relative to said pedestal, and said fastener is buckled on the said position-arresting part in order to prevent said keycap and said base-separation.

Preferably, said keycap comprises a back side, and said location division approximate vertical is connected in the back side of said keycap.

Preferably, said position-arresting part comprises that two parallel limiting plates are connected the position-stopping plate of said two limiting plates with one, and said two parallel limiting plate and said position-stopping plates surround a through hole.

Preferably, said housing piece is provided with an accepting hole, and each accepting hole is accommodated each location division, so that the direction that the said relatively pedestal of said keycap extends along said housing piece is slided.

Preferably, said fastener includes the stop section and is located at the clamping part on the said stop section, and said stop section prevents that said circuit board from moving in being parallel to plane, said pedestal place.

Preferably, corresponding said fastener is provided with opening on the said pedestal, and said opening is used for said position-arresting part and passed.

Preferably, the stop section of said fastener is vertically connected at the one edge of said opening.

Preferably, the clamping part of said fastener is buckled in the through hole of said position-arresting part to prevent that said keycap breaks away from said pedestal.

Preferably, said circuit board is a conductive film circuit board.

Preferably, said flexible member comprise the support portion, the connecting portion that extends to form from said support portion and the pressure section that extends to form from said connecting portion.

Compared with prior art, in above-mentioned press-key structure, comprise a pedestal, a circuit board and a keycap, need not linkage, simple in structure.

Description of drawings

Fig. 1 is a three-dimensional exploded view of preferable enforcement row of press-key structure of the present invention.

Fig. 2 is an enlarged drawing of keycap among Fig. 1.

Fig. 3 is a three-dimensional assembly diagram of pedestal and film circuit board among Fig. 1.

Fig. 4 is the three-dimensional assembly diagram of Fig. 1.

Fig. 5 is the profile of Fig. 4 along the V-V direction.

Fig. 6 is the profile of Fig. 4 along the VI-VI direction.

Fig. 7 is the profile of Fig. 4 along the VII-VII direction.

The main element symbol description

Keycap	10
		Positive	11
The back side	12
		The location division	121
Position-arresting part	123
		Position-stopping plate	1231
Limiting plate	1233
		Pedestal	30
Upper surface	31
		Housing piece	311
Accepting hole	3111
		Fastener	313
The stop section	3131
		Clamping part	3133
Opening	3135
		Circuit board	50
Flexible member	51
		The support portion	5311
Connecting portion	5313
		Pressure section	5315
Extension	53

Following embodiment will combine above-mentioned accompanying drawing to further specify the present invention.

Embodiment

Please with reference to Fig. 1, in the preferred embodiment of the present invention, a press-key structure comprises a keycap 10, a pedestal 30 and a circuit board 50.In one embodiment, said circuit board 50 is conductive film circuit boards, and said conductive film circuit board is a cross type.

Please referring to figs. 1 through Fig. 3, said circuit board 50 centre of surface places convex with a flexible member 51 and are formed with four extensions 53 all around.Said flexible member 51 comprises a support portion 5311, a junction 5313 that extends to form from said support portion 5311 and a pressure section 5315 that extends to form from said connecting portion 5313.In one embodiment, said support portion 5311 cross-sectional areas are greater than said connecting portion 5313 cross-sectional areas, and the cross-sectional area of said connecting portion 5313 is greater than the cross-sectional area of said pressure section 5315.

Said keycap 10 comprises one positive 11 and one and said positive 11 opposing backside surface 12; The said back side 12 is provided with four location divisions 121 and four position-arresting parts 123; The shape of said four location divisions 121 is roughly the same, and the vertical range at each location division 121 free terminal to the said back side 12 about equally.Each position-arresting part 123 comprises that two limiting plates 1233 that are parallel to each other and connect the position-stopping plate 1231 of said two limiting plates 1233, forms a through hole 1235 between said two limiting plates 1233, said position-stopping plate 1231 and the said back side 12.In one embodiment, the said back side 12 roughly is a square.

Said pedestal 30 comprises a upper surface 31, and corresponding 121 places, said location division of placing of four corners of said upper surface 31 are provided with four housing piece 311, and each housing piece 311 is provided with a accepting hole 3111 in order to accommodate said location division 121.Be respectively equipped with a fastener 313 in the corner of per two extensions 53 of placing said circuit board 50 and the position-arresting part 123 of corresponding said keycap 10 on the said upper surface 31; Each fastener 313 comprises a stop section 3131 and a clamping part 3133 that is extended to form by said stop section 3131; Each clamping part 3133 is roughly towards said pedestal 30 outside extensions; Corresponding each fastener 313 is provided with an opening 3135 on the upper surface 31 of said pedestal 30; Each opening 3135 is roughly between the housing piece 311 and adjacent card fastener 313 of correspondence; The stop section 3131 of each fastener 313 is vertically connected at the one edge of each opening 3135, and said opening 3135 is provided with position-arresting part 123 and passes.In one embodiment, said upper surface 31 roughly is a square.

See also Fig. 3 to Fig. 7; During assembling; Said circuit board 50 is positioned on the said pedestal 30, and each extension 53 is between two adjacent fasteners 313, and each stop section said circuit board 50 of 3131 restrictions of said four fasteners 313 moves relative to said pedestal 30.The back side 12 of said keycap 10 is faced toward said pedestal 30; In the accepting hole 3111 of the housing piece 311 of the pedestal 30 that 121 insertions of said location division are corresponding; The clamping part 3133 of said fastener 313 snaps in the through hole 1235 of corresponding position-arresting part 123; Thereby the back side 12 that makes said keycap 10 presses on the pressure section 5315 of said flexible member 51; The longitudinal section height of said flexible member 51 makes each location division 121 not touch the bottom of each accepting hole 3111 greater than the longitudinal section height of said location division 121.

During use, push the front 11 of said keycap 10, elastic deformation takes place in said flexible member 51; And move downward with said keycap 10, the contact on the said circuit board 50 of extruding, thus make said circuit board 50 send signal; After discharging the front 11 of said keycap 10; Said flexible member 51 elastic recoverys move to initial position to order about said keycap 10, and at this moment the bottom of each accepting hole 3111 is not touched in each location division 121.

To those skilled in the art, can combine the actual needs of production to make other corresponding changes or adjustment according to invention scheme of the present invention and inventive concept, and these changes and adjustment all should belong to the protection range of claim of the present invention.

Claims

1. press-key structure; Comprise keycap, pedestal and circuit board; It is characterized in that: said keycap is provided with location division and position-arresting part, and the location division of corresponding said keycap and position-arresting part are provided with housing piece and fastener on the said pedestal, and said location division is contained in the said housing piece; Said circuit board is provided with flexible member; Said flexible member is fixed between said keycap and the said pedestal, and said flexible member orders about said keycap and moves relative to said pedestal, and said fastener is buckled on the said position-arresting part in order to prevent said keycap and said base-separation.

2. press-key structure according to claim 1 is characterized in that: said keycap comprises a back side, and said location division approximate vertical is connected in the back side of said keycap.

3. press-key structure according to claim 1 is characterized in that: said position-arresting part comprises that two parallel limiting plates are connected the position-stopping plate of said two limiting plates with one, and said two parallel limiting plate and said position-stopping plates surround a through hole.

4. press-key structure according to claim 1 is characterized in that: said housing piece is provided with an accepting hole, and each accepting hole is accommodated each location division, so that the direction that the said relatively pedestal of said keycap extends along said housing piece is slided.

5. press-key structure according to claim 1 is characterized in that: said fastener includes the stop section and is located at the clamping part on the said stop section, and said stop section prevents that said circuit board from moving in being parallel to plane, said pedestal place.

6. press-key structure according to claim 5 is characterized in that: corresponding said fastener is provided with opening on the said pedestal, and said opening is used for said position-arresting part and passed.

7. press-key structure according to claim 6 is characterized in that: the stop section of said fastener is vertically connected at the one edge of said opening.

8. press-key structure according to claim 5 is characterized in that: the clamping part of said fastener is buckled in the through hole of said position-arresting part to prevent that said keycap breaks away from said pedestal.

9. press-key structure according to claim 1 is characterized in that: said circuit board is a conductive film circuit board.

10. press-key structure according to claim 1 is characterized in that: connecting portion that said flexible member comprises the support portion, extend to form from said support portion and the pressure section that extends to form from said connecting portion.