CN102487593A

CN102487593A - Fixing device

Info

Publication number: CN102487593A
Application number: CN2010105702869A
Authority: CN
Inventors: 谢忠成; 陈丽萍
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: 2010-12-02
Filing date: 2010-12-02
Publication date: 2012-06-06

Abstract

A fixing device is used to fix a circuit board on a base plate of a chassis. The fixing device comprises: a locating piece which is fixed on the base plate and a locking piece which is used to lock and fix the circuit board. The locating piece comprises a fastening part and a support column which are connected with each other. The fastening part is clamped on the base plate and the support column is used to support the circuit board. The fixing device also comprises a guidance piece. The guidance piece comprises two first guidance sheets and a second guidance sheet. The two first guidance sheets are arranged on an upper surface and a lower surface of the support column respectively and are used to form electrical connection with the circuit board and the base plate. The second guidance sheet is connected to the two first guidance sheets.

Description

Fixture

Technical field

The present invention relates to a kind of fixture, refer to a kind of fixture that is used for fixing circuit board especially.

Background technology

Usually the circuit board in the electronic equipment is to have externally threaded second screw through first screw with internal thread and one to be secured on the base plate of housing, and first screw is that direct riveted and fixed is on base plate.Such fixed form when the required distance between circuit board and the base plate is different, just needs to change screw or change base plate, and changes very difficulty.

At present, in the existing fixture, be that first screw is buckled on the base plate, the material of first screw will be selected the material of elastically deformables such as plastic cement for use.Like this, just produced very big influence for circuit board with being electrically connected of base plate.

Summary of the invention

In view of above content, be necessary to provide a kind of fixture that can conveniently install and dismantle circuit board.

A kind of fixture is used for a circuit board is fixed on the base plate of a casing, comprise in order to be fixed on the said base plate keeper and in order to the locking part of the said circuit board that locks; Said keeper comprises clamping part and the support column that links together; Said clamping part is in order to be stuck on the said base plate, and said support column is in order to support said circuit board, and said fixture also includes lead piece; Said lead piece includes two first guide-joining plates and one second guide-joining plate; Said two first guide-joining plates are installed in respectively on the upper and lower surface of said support column, and in order to be electrically connected with said circuit board and said base plate, said second guide-joining plate connects said two first guide-joining plates.

Preferably, the upper and lower surface of said support column is provided with first accepting groove, in order to accommodate said first guide-joining plate; Said support column also includes sidewall; Said sidewall is provided with second accepting groove, and in order to accommodate said second guide-joining plate, said second accepting groove is communicated with two said first accepting grooves.

Preferably, said clamping part includes bottom and joint pin, and said joint pin is between said support column and said bottom.

Preferably, said clamping part also includes the grab of elastically deformable.

Preferably, said grab has two, respectively the diagonally extending from the both sides of said bottom.

Preferably, said joint pin is between the two said grabs, leaves the elastically-deformable space of convenient said grab between each grab and the said joint pin.

Preferably, said grab includes spacer, and said spacer connects said bottom, and and said bottom between angle be the obtuse angle.

Preferably, said spacer is provided with blocking surface, and the lower surface of said base plate is resisted against on the said blocking surface.

Preferably, said blocking surface is provided with barrier sheet, and said barrier sheet snaps in the location hole that is opened on the said base plate, slides in order to prevent the said relatively base plate of said keeper.

Compared with prior art; In the said fixing device; Include lead piece, said lead piece includes two first guide-joining plates and one second guide-joining plate, and said two first guide-joining plates are installed in respectively on the upper and lower surface of said support column; In order to be electrically connected with said circuit board and said base plate, said second guide-joining plate connects said two first guide-joining plates.Through such mode, just can effectively said circuit board be electrically connected with said base plate.

Description of drawings

Fig. 1 is a kind of fixture and casing, an and three-dimensional exploded view of circuit board.

Fig. 2 is another visual angle figure of Fig. 1.

Fig. 3 is a three-dimensional assembly diagram of fixture among Fig. 1.

Fig. 4 is a three-dimensional assembly diagram of fixture among Fig. 2.

Fig. 5 is the three-dimensional assembly diagram of Fig. 1.

Fig. 6 is another visual angle figure of Fig. 5.

The main element symbol description

Circuit board	10
		Fixing hole	11

Base plate	20
		Location hole	21
Keeper	30
		The bottom	31
Clamping part	32
		Joint pin	33
Support column	35
		First accepting groove	351
Second accepting groove	353
		Perforate	355
Grab	37
		Spacer	373
Blocking surface	3731
		Stop tab	375
Lead piece	50
		First guide-joining plate	51
Second guide-joining plate	53
		Locking part	70
Neck	71
		Head	73

Embodiment

See also Fig. 1, in a preferred embodiments of the present invention, a fixture is used for a circuit board 10 is fixed on the base plate 20 of a casing.Said circuit board 10 is offered plurality of fixed hole 11, and the said relatively fixing hole 11 of said base plate 20 is offered some location holes 21.In one embodiment, said circuit board 10 can be a mainboard, and said fixing hole 11, location hole 21 are round holes.

Said fixture comprises positioning piece 30, a lead piece 50 and a locking part 70.

Please continue to consult Fig. 2, said keeper 30 comprises a support column 35 and a clamping part 32 that links together.Said support column 35 is roughly cylinder, and offers a perforate 355, and said perforate 355 is provided with internal thread.The diameter of the fixing hole 11 that the diameter of said perforate 355 and said circuit board 10 are offered about equally.Said support column 35 is offered one first accepting groove 351 respectively on upper and lower surface, and on sidewall, is provided with one second accepting groove 353.Said second accepting groove 353 is communicated with two said first accepting grooves 351.Said clamping part 32 comprises a bottom 31, a joint pin 33 and all right one way or the other elastically-deformable grab 37.Said joint pin 33 is between said bottom 31 and the said support column 35.Each grab 37 comprises a spacer 373 and a stop tab 375.Said spacer 373 from the two ends of said bottom 31 along the extension that is inclined upwardly respectively.Angle between each spacer 373 and the said bottom 31 is the obtuse angle.Said joint pin 33 is located on the said bottom 31, and is positioned in the middle of the two said spacers 373.Each spacer 373 comprises that respectively one is parallel to the blocking surface 3731 of said bottom 31.Said stop tab 375 is upwards extended to form respectively by the edge of each blocking surface 3731 near said joint pin 33.Said stop tab 375 is approximately perpendicular to said bottom 31, and and the bottom surface of said support column 35 between leave the space.Distance between the two said stop tab 375 is slightly less than the diameter of said location hole 21.In one embodiment, said joint pin 33 is a cylinder.

Please continue to consult Fig. 3-4, said lead piece 50 comprises that two first guide-joining plates 51 and connect second guide-joining plate 53 of two said first guide-joining plates 51.Two said first guide-joining plates 51 are parallel to each other, and are approximately perpendicular to said second guide-joining plate 53.Said first guide-joining plate 51 is stuck in first accepting groove 351 of said keeper 30, and said second guide-joining plate 53 is stuck in said second accepting groove 353, thereby said lead piece 50 is fixed on the said keeper 30.In one embodiment, said lead piece 50 is processed by electric conducting material such as iron etc.

Said locking part 70 comprises a neck 71 and a head 73.The diameter of the diameter of said neck 71 and said fixing hole 11 about equally, and less than the diameter of said head 73.Said neck 71 is provided with the external screw thread that the internal thread offered with said support column 35 matches.

Please continue to consult Fig. 5-6, when said circuit board 10 was installed, the keeper 30 that will be fixed with said lead piece 50 earlier was fixed on the said base plate 20.Location hole 21 with the said base plate 20 of the bottom of said keeper 30 31 alignment.Down push said keeper 30, said grab 37 receives compressing around the said location hole 21 and produces inside elastic deformation.Said spacer 373 stretches out said base plate 20 along said location hole 21, and the bottom surface and the said lead piece 50 of the upper surface of said base plate 20 and said support column 35 lean.Said grab 37 elastic deformations are replied, and the blocking surface 3731 of said spacer 373 is resisted against on the lower surface of said base plate 20, and said stop tab 375 is stuck in the said location hole 21.Thereby, said base plate 20 is fixed between said support column 35 and the said blocking surface 3731.Then said circuit board 10 is fixed on the said base plate 20.The perforate of the said keeper 30 of fixing hole 11 alignment that said circuit board 10 is offered; The neck 71 of said locking part 70 is screwed in the perforate of said keeper 30 through said fixing hole 11; Said head 73 leans with the upper surface of said circuit board 10, and the upper surface and the said lead piece 50 of the lower surface of said circuit board 10 and said support column 35 lean.Thereby, said circuit board 10 is locked together with said base plate 20.Said lead piece 50 is electrically connected said circuit board 10 with said base plate 20.

During dismounting, said locking part 70 is screwed out said keeper 30, just can said circuit board 10 be taken off.When dismantling said keeper 30, push two said grabs 37, order about said grab 37 and produce inside elastic deformation with hand.Said keeper 30 is upwards taken out, and said grab 37 gets into said location hole 21, and spins off.Like this, just can said keeper 30 be disassembled.

Claims

1. fixture; Be used for a circuit board is fixed on the base plate of a casing; Comprise that the keeper in order to be fixed on the said base plate reaches the locking part in order to the said circuit board that locks, said keeper comprises clamping part and the support column that links together, and said clamping part is in order to be stuck on the said base plate; Said support column is in order to support said circuit board; It is characterized in that: said fixture also includes lead piece, and said lead piece includes two first guide-joining plates and one second guide-joining plate, and said two first guide-joining plates are installed in respectively on the upper and lower surface of said support column; In order to be electrically connected with said circuit board and said base plate, said second guide-joining plate connects said two first guide-joining plates.

2. fixture as claimed in claim 1; It is characterized in that: the upper and lower surface of said support column is provided with first accepting groove; In order to accommodate said first guide-joining plate, said support column also includes sidewall, and said sidewall is provided with second accepting groove; In order to accommodate said second guide-joining plate, said second accepting groove is communicated with two said first accepting grooves.

3. fixture as claimed in claim 1 is characterized in that: said clamping part includes bottom and joint pin, and said joint pin is between said support column and said bottom.

4. fixture as claimed in claim 3 is characterized in that: said clamping part also includes the grab of elastically deformable.

5. fixture as claimed in claim 4 is characterized in that: said grab has two, respectively the diagonally extending from the both sides of said bottom.

6. fixture as claimed in claim 4 is characterized in that: said joint pin is between the two said grabs, leaves the elastically-deformable space of convenient said grab between each grab and the said joint pin.

7. fixture as claimed in claim 4 is characterized in that: said grab includes spacer, and said spacer connects said bottom, and and said bottom between angle be the obtuse angle.

8. fixture as claimed in claim 7 is characterized in that: said spacer is provided with blocking surface, and the lower surface of said base plate is resisted against on the said blocking surface.

9. fixture as claimed in claim 8 is characterized in that: said blocking surface is provided with barrier sheet, and said barrier sheet snaps in the location hole that is opened on the said base plate, slides in order to prevent the said relatively base plate of said keeper.