CN201355888Y - Back board unit - Google Patents
Back board unit Download PDFInfo
- Publication number
- CN201355888Y CN201355888Y CNU2008201609996U CN200820160999U CN201355888Y CN 201355888 Y CN201355888 Y CN 201355888Y CN U2008201609996 U CNU2008201609996 U CN U2008201609996U CN 200820160999 U CN200820160999 U CN 200820160999U CN 201355888 Y CN201355888 Y CN 201355888Y
- Authority
- CN
- China
- Prior art keywords
- printed circuit
- circuit board
- pcb
- wall surface
- plastic cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A back board unit comprises a plastic insulating sheet and a back board. The plastic insulating sheet consists of a flat main body which consists of an upper wall and a lower wall; the back board is assembled on the lower wall of the plastic insulating sheet; the back board unit is assembled on a printed circuit board; wherein, the upper and the lower walls of the plastic insulating sheet are respectively provided with more than two positioning posts; the back board is provided with positioning holes corresponding to the positioning posts of the lower wall; the printed circuit board is provided with positioning holes corresponding to the positioning posts of the upper wall; the positioning posts of the lower wall are contained in the positioning holes of the back board; the positioning posts of the upper wall are contained in the positioning holes of the printed circuit board; and the printed circuit board, the corresponding positions of the plastic insulating sheet and the back board are fixed together by means of the positioning posts and the positioning holes.
Description
[technical field]
The utility model is about a kind of back board device, especially refers to a kind of back board device that is used for electric connector is fixed in printed circuit board (PCB).
[background technology]
In the prior art, chip module is to electrically connect with printed circuit board (PCB) by electric connector, and electric connector is fixed on the printed circuit board (PCB) by back board device.The corresponding electric connector of back board device is arranged at the back side of printed circuit board (PCB).Be equipped with the screw accepting hole on electric connector and the back board device, when assembling, after screw passed the screw accepting hole of above-mentioned electric connector and back board device, electric connector was fixed on the printed circuit board (PCB).
Yet, be arranged on the electric connector of printed circuit board (PCB) both sides and back board device be tabular, no positioner.So during assembling, electric connector is difficult for aliging with the screw accepting hole of back board device, passes above-mentioned screw accepting hole thereby influence screw, influences the assembling speed of electric connector.
Therefore, be necessary to provide a kind of improved back board device, in order to overcome aforesaid defective.
[utility model content]
The purpose of this utility model is to provide a back board device, and the reference column of convenient location is set on its plastic cement insulating trip.
The purpose of this utility model is achieved in that a kind of back board device, comprise plastic cement insulating trip and backboard, the plastic cement insulating trip includes flat main part, main part comprises upper wall surface and lower wall surface, backboard is assembled in the lower wall surface of above-mentioned plastic cement insulating trip, back board device is assembled to a printed circuit board (PCB), wherein, be respectively arranged with two above reference columns on the upper wall surface of plastic cement insulating trip and the lower wall surface, backboard is provided with the reference column corresponding positioning hole with above-mentioned lower wall surface, printed circuit board (PCB) be provided with above-mentioned upper wall surface on the reference column corresponding positioning hole, the reference column of lower wall surface is contained in the location hole of backboard, reference column on the upper wall surface is contained in the location hole of printed circuit board (PCB), printed circuit board (PCB), relative position between plastic cement insulating trip and the backboard interfixes with cooperating of location hole by above-mentioned reference column.
Compared with the prior art, the utlity model has following advantage: be provided with reference column on the upper wall surface of plastic cement insulating trip and the lower wall surface, reference column can make between backboard, plastic cement insulating trip and the printed circuit board (PCB) and locating fast, conveniently electric connector is assembled on the printed circuit board (PCB) fast.
[description of drawings]
Fig. 1 is that the utility model back board device is placed on the stereogram on the printed circuit board (PCB);
Fig. 2 is the exploded view of back board device;
Fig. 3 is the stereogram that back board device shown in Figure 1 is placed on the other direction on the printed circuit board (PCB).
[embodiment]
Please consult Fig. 1 simultaneously to shown in Figure 3, the utility model back board device comprises plastic cement insulating trip 20 and backboard 30.
It is that upper wall surface 210 from first main part 21 extends to form straight up that the upper wall surface 210 that plastic cement insulating trip 20 includes first main part, 21, the first main parts 21 is provided with first reference column, 23, the first reference columns 23.First main part 21 also is provided with two make-ups and holds sheet 25, two make-ups and hold sheet 25 and extend to form downwards from first main part, 21 dual-sides respectively, and button is held both sides that sheet 25 is in first main part 21 respectively and is and is oppositely arranged, so that stable button is held other member.The lower wall surface 212 of first main part 21 is provided with a pair of second reference column, 24, the second reference columns 24 and extends to form straight down from lower wall surface 212.In the present embodiment, first reference column 23 and second reference column 24 all are arranged at first main part, 21 middle parts, and first reference column 23 and second reference column 24 are corresponding setting respectively on upper wall surface 210 and the lower wall surface 212, yet, this first reference column 23 and second reference column 24 all are used for the location, it can be arranged at other position on upper wall surface 210 and the lower wall surface 212, also can accelerate, make first reference column 23 and second reference column 24 all more than two, first reference column 23 and second reference column 24 are can quantity unequal, but all are at least two.
Printed circuit board (PCB) 10 includes positive 11 and following 12, positive 11 and is used for being connected with respective electrical connector (not icon), offers a pair of first location hole, 14, the first location holes, 14 corresponding above-mentioned first reference columns 23 on the printed circuit board (PCB) 10 and is provided with.Back board device is arranged at the following 12 of printed circuit board (PCB), and first reference column 23 is contained in first location hole 14.Like this, just can determine the relative position between backboard 30, plastic cement insulating trip 20 and the printed circuit board (PCB) 10, make between backboard 30, plastic cement insulating trip 20 and the printed circuit board (PCB) 10 and can not arbitrarily move.
Be respectively equipped with screw accepting hole 13 on above-mentioned printed circuit board (PCB) 10, plastic cement insulating trip 20 and the backboard 30,22,32, these screw accepting holes 13,22,32 are oppositely arranged, below back board device is positioned over printed circuit board (PCB) 10 after 12, screw accepting hole 13,22 constitutes a complete screw accepting hole between 32.Because of the relative position between backboard 30, plastic cement insulating trip 20 and the printed circuit board (PCB) 10 is fixed, screw accepting hole 13,22, the mutual alignment between 32 is also definite relatively.Like this, screw accepting hole 13,22 need not be paid special attention between 32 just can align, and screw 40 just can easily pass these screw accepting holes 13,22,32.
After electric connector was positioned over the front 11 of printed circuit board (PCB) 10, screw 40 was fixed in electric connector on the printed circuit board (PCB) 10.The screw accepting hole 32 that is arranged on the backboard 30 can be provided with internal thread with attachment screw 40, perhaps adds a nut with attachment screw below backboard.
Claims (7)
1. back board device, comprise plastic cement insulating trip and backboard, the plastic cement insulating trip includes flat main part, main part comprises upper wall surface and lower wall surface, backboard is assembled in the lower wall surface of above-mentioned plastic cement insulating trip, back board device is assembled to a printed circuit board (PCB), it is characterized in that: be respectively arranged with two above reference columns on the upper wall surface of plastic cement insulating trip and the lower wall surface, backboard is provided with the reference column corresponding positioning hole with above-mentioned lower wall surface, printed circuit board (PCB) be provided with above-mentioned upper wall surface on the reference column corresponding positioning hole, the reference column of lower wall surface is contained in the location hole of backboard, reference column on the upper wall surface is contained in the location hole of printed circuit board (PCB), printed circuit board (PCB), relative position between plastic cement insulating trip and the backboard interfixes with cooperating of location hole by above-mentioned reference column.
2. back board device as claimed in claim 1 is characterized in that: also be provided with to buckle on the main part two sides of described plastic cement insulating trip and hold sheet, button is held the sheet button and is held backboard.
3. back board device as claimed in claim 1, it is characterized in that: be equipped with the screw accepting hole on described backboard, plastic cement insulating trip and the printed circuit board (PCB), above-mentioned screw accepting hole is overlapping successively after backboard, plastic cement insulating trip and the printed circuit board (PCB) assembling, constitutes intactly screw accepting hole.
4. back board device as claimed in claim 3 is characterized in that: the overlapping successively screw accepting hole that forms of the screw accepting hole on described backboard, plastic cement insulating trip and the printed circuit board (PCB) can be accommodated screw.
5. back board device as claimed in claim 4, it is characterized in that: be welded with an electric connector on the described printed circuit board (PCB), electric connector and back board device lay respectively at the printed circuit board (PCB) both sides, by the above-mentioned screw that is contained in by the overlapping successively screw accepting hole that forms of the screw accepting hole on backboard, plastic cement insulating trip and the printed circuit board (PCB), electric connector is stable to be immobilizated on the printed circuit board (PCB).
6. back board device as claimed in claim 1 is characterized in that: the described reference column that is arranged on the plastic cement insulating trip is vertical mutually with main part.
7. back board device as claimed in claim 6 is characterized in that: the reference column of described upper wall surface is corresponding mutually with the reference column of lower wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201609996U CN201355888Y (en) | 2008-11-05 | 2008-11-05 | Back board unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201609996U CN201355888Y (en) | 2008-11-05 | 2008-11-05 | Back board unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355888Y true CN201355888Y (en) | 2009-12-02 |
Family
ID=41412228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201609996U Expired - Fee Related CN201355888Y (en) | 2008-11-05 | 2008-11-05 | Back board unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355888Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042980A (en) * | 2011-10-14 | 2013-04-17 | 成都锐奕信息技术有限公司 | Component for fixing wireless positioning vehicle-mounted terminal casing |
-
2008
- 2008-11-05 CN CNU2008201609996U patent/CN201355888Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042980A (en) * | 2011-10-14 | 2013-04-17 | 成都锐奕信息技术有限公司 | Component for fixing wireless positioning vehicle-mounted terminal casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20131105 |