CN201563302U - Positioning pin and PCB positioning equipment - Google Patents
Positioning pin and PCB positioning equipment Download PDFInfo
- Publication number
- CN201563302U CN201563302U CN2009202606519U CN200920260651U CN201563302U CN 201563302 U CN201563302 U CN 201563302U CN 2009202606519 U CN2009202606519 U CN 2009202606519U CN 200920260651 U CN200920260651 U CN 200920260651U CN 201563302 U CN201563302 U CN 201563302U
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- pin
- polygon
- bearing pin
- alignment pin
- cross
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Abstract
The utility model discloses a positioning pin and PCB positioning equipment, wherein the PCB positioning equipment comprises a base body and the positioning pin vertically fixed on the base body, wherein the positioning pin is provided with a pin head and a pin shaft connected with one end of the pin head, the pin head is fixed in the base body, the pin shaft is exposed out of the base body, the cross section of the pin shaft is a polygon with at least three straight edges or arc edges, and the polygon is provided with at least pointed parts which are at largest and equidistant distance from the axis of the shaft. When the pin shaft of the positioning pin of the PCB positioning equipment is matched with a fixed hole, the whole shaft surface of the pin shaft is not contacted with the hole flange of the fixed hole, only the peripheral pointed areas are contacted with the hole flange of the fixed hole, namely the contact surface between the pin shaft and the fixed hole is smaller, thus reducing the friction between the pin shaft and the hole flange, taking and placing a circuit board easier when in forming and processing, and reducing probability of damaging the hole flange of the fixed hole on the circuit board.
Description
Technical field
The utility model relates to a kind of detent mechanism, relates in particular to a kind of alignment pin and pcb board positioning equipment.
Background technology
Existing printed circuit board (PCB) is adding man-hour, generally be on holder, to process earlier location hole, throw shop bolt into location hole again, and printed circuit board is provided with the fixing hole of corresponding specification and position, manually adorn the plate operation then, make printed circuit board (PCB) be positioned the fixed position, after circuit board to be printed machines, again by manually unloading plate or equipment automatic material separator.
See also Fig. 1 and Fig. 2, it is the structural representation of existing a kind of alignment pin, this alignment pin has a bearing pin 10 that is cylindrical shape, the bearing pin 10 of this kind alignment pin when fixing circuit board and the fixing hole of circuit board be adaptive fully, the peritreme of fixing hole is to contact fully with the circular surface of alignment pin, and contact area is bigger.So, when picking and placeing circuit board by hand, the friction on the peritreme of fixing hole and alignment pin surface is bigger, picks and places relatively difficulty of circuit board, and causes the peritreme damage of the fixing hole on the circuit board easily even scrap whole fixing hole.
The utility model content
The technical problem that the utility model mainly solves provides a kind of alignment pin and pcb board positioning equipment, picks and places that circuit board is easier to and can reduce the probability of fixing hole peritreme on the damage circuit board with the alignment pin fixing circuit board on this pcb board positioning equipment.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of alignment pin is provided, comprise pin head and the bearing pin that is connected with the first end of pin, the cross section of described bearing pin is a polygon, described polygon has at least three stupefied limits of straight line or the stupefied limit of camber line, and polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip.
Wherein, described polygon is square, triangle, pentagon or hexagon, forms described tip between the adjacent both sides of polygon.
Wherein, described tip is a circular arc.
Wherein, described pin head is cylindrical shape.
Wherein, described pin head is in protruding out the rounded boss of a cross section away from an end that connects bearing pin, and the diameter of described boss cross section is less than the diameter of described pin head cross section.
Wherein, described bearing pin is protruding with the end face of a circle away from an end of pin head, and the diameter of described end face is less than the diameter of the cross section of described bearing pin.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: a kind of pcb board positioning equipment is provided, comprise pedestal and the vertical fixing alignment pin on pedestal, the bearing pin that described alignment pin has the pin head and is connected with the first end of pin, described pin head is fixed in the described pedestal, described bearing pin is exposed to outside the pedestal, the bearing pin cross section is a polygon, described polygon has at least three straight lines or camber line limit, and polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip.
Wherein, described polygon is square, triangle, pentagon or hexagon, forms described tip between the adjacent both sides of polygon.
Wherein, described tip is a circular arc.
Wherein, the connected mode of described alignment pin and pedestal is that interference fit, welding or described alignment pin and pedestal are one-body molded.
The beneficial effects of the utility model are: the peritreme contact area that is different from the bearing pin of alignment pin of prior art and fixing hole is bigger, it is bigger to rub, pick and place relatively difficulty of circuit board, and cause the situation of the peritreme damage of the fixing hole on the circuit board easily, the cross section of the bearing pin of the alignment pin of the utility model pcb board positioning equipment is a polygon, polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip, this bearing pin when cooperating with fixing hole not all axial plane contact with the peritreme of fixing hole, and just the peaked area of side face contacts with the peritreme of fixing hole, the peritreme contact area that is bearing pin and fixing hole is less, thereby can reduce the friction between bearing pin and the peritreme, make that picking and placeing circuit board is easier to, and reduce the probability of fixing hole peritreme on the damage circuit board.
Description of drawings
Fig. 1 is the structural representation of existing alignment pin;
Fig. 2 is the cross-sectional view of existing alignment pin;
Fig. 3 is the structural representation of the utility model pcb board positioning equipment;
Fig. 4 is the front schematic view of the utility model alignment pin
Fig. 5 is the structural representation of the utility model alignment pin;
Fig. 6 is the front view of alignment pin when fixing hole on the pcb board cooperates among Fig. 3.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
See also Fig. 3, Fig. 4 and Fig. 5, the utility model pcb board positioning equipment 12 comprises pedestal 121 and alignment pin 122, and alignment pin 122 comprises pin head 20 and the bearing pin 21 that is connected with pin head 20 1 ends.Described pin head 20 is fixed in the described pedestal 121, and described bearing pin 21 is exposed to outside the pedestal 121, described bearing pin 21 be used for circuit board on fixing hole match with fixing circuit board.
Described alignment pin is strip, and described pin head 20 is cylindrical shape, and described pin head 20 is in the boss 201 that protrudes out a circle away from an end that connects bearing pin 21, and the diameter of this boss 201 is less than the diameter of described pin head 20 cross sections.The cross section of described bearing pin 21 is a polygon, and described polygon has at least three stupefied limits of straight line or the stupefied limit of camber line, and polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip; In the present embodiment, four camber lines that described changeable shape has four straight lines and connects adjacent two straight lines respectively.Described bearing pin 21 has a plurality of sides that are square 211, the intersection of adjacent two sides is that the interface 212 that is circular arc connects, the cross section at described interface 212 places is an arc chord angle, form described tip between the dual-side of the cross section of adjacent two sides, this tip is circular arc, and described tip equates with the radius length in the cross section of described bearing pin 21 apart from the axle center distance.The polygon of the cross section of described bearing pin 21 can also be triangle, pentagon or hexagon.
One end of described bearing pin 21 is in the end face 213 that is protruding with a circle away from an end that is connected with the pin head, and the diameter of described end face 213 is less than the diameter of the cross section of described bearing pin 21.
See also Fig. 6, its vertical view that to be the bearing pin 21 of alignment pin cooperate with fixing hole on the circuit board, as can be seen from the figure, four sides of described bearing pin 21 do not contact with the peritreme of fixing hole, and just the interface 212 of adjacent side contacts with the peritreme of fixing hole, so significantly reduced the contact area of bearing pin 21, thereby can reduce the friction of bearing pin 21 and fixing hole peritreme, be convenient to pick and place circuit board with the peritreme of fixing hole.And described interface 212 is designed to circular arc and contacts with the peritreme of fixing hole, can prevent bearing pin 21 damaging fixed holes.
The peritreme contact area that is different from the bearing pin of alignment pin of prior art and fixing hole is bigger, it is bigger to rub, pick and place relatively difficulty of circuit board, and cause the situation of the peritreme damage of the fixing hole on the circuit board easily, the improvements of the utility model alignment pin are, the bearing pin of described alignment pin is square, have a plurality of sides, the interface of adjacent side is circular-arc, the cross section of bearing pin is a polygon, polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip, this tip is the arc chord angle of described interface, this bearing pin square side when cooperating with fixing hole can not contact with the peritreme of fixing hole, and just bearing pin tip side face just contacts with the peritreme of fixing hole, and so the peritreme contact area of bearing pin and fixing hole is less, thereby can reduce the friction between bearing pin and the peritreme, make that picking and placeing circuit board is easier to, reduce the probability of fixing hole peritreme on the damage circuit board.
In sum, the bearing pin of the alignment pin of the utility model pcb board positioning equipment by a plurality of side form square, and the interface of the intersection of adjacent side is curved, the cross section of bearing pin is a polygon, polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip, this bearing pin when cooperating with fixing hole not all axial plane contact with the peritreme of fixing hole, and just the peaked area of side face contacts with the peritreme of fixing hole, the peritreme contact area that is bearing pin and fixing hole is less, thereby can reduce the friction between bearing pin and the peritreme, make that picking and placeing circuit board is easier to, and reduce the probability of fixing hole peritreme on the damage circuit board.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. alignment pin, comprise pin head and the bearing pin that is connected with the first end of pin, it is characterized in that, the cross section of described bearing pin is a polygon, described polygon has at least three stupefied limits of straight line or the stupefied limit of camber line, and polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip.
2. alignment pin according to claim 1 is characterized in that, described polygon is square, triangle, pentagon or hexagon, forms described tip between the adjacent both sides of polygon.
3. alignment pin according to claim 2 is characterized in that, described tip is a circular arc.
4. alignment pin according to claim 1 is characterized in that, described pin head is cylindrical shape.
5. alignment pin according to claim 1 is characterized in that, described pin head protrudes out the rounded boss of a cross section away from an end that connects bearing pin, and the diameter of described boss cross section is less than the diameter of described pin head cross section.
6. alignment pin according to claim 1 is characterized in that, described bearing pin is protruding with the end face of a circle away from an end of pin head, and the diameter of described end face is less than the diameter of the cross section of described bearing pin.
7. pcb board positioning equipment, comprise pedestal and the vertical fixing alignment pin on pedestal, the bearing pin that described alignment pin has the pin head and is connected with the first end of pin, it is characterized in that, described pin head is fixed in the described pedestal, and described bearing pin is exposed to outside the pedestal, and the bearing pin cross section is a polygon, described polygon has at least three stupefied limits of straight line or the stupefied limit of camber line, and polygon have at least three from distance of shaft centers from maximum and from the axle center equidistant tip.
8. pcb board positioning equipment according to claim 7 is characterized in that, described polygon is square, triangle, pentagon or hexagon, forms described tip between the adjacent both sides of polygon.
9. pcb board positioning equipment according to claim 7 is characterized in that, described tip is a circular arc.
10. pcb board positioning equipment according to claim 7 is characterized in that, the connected mode of described alignment pin and pedestal is that interference fit, welding or alignment pin and pedestal are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202606519U CN201563302U (en) | 2009-11-20 | 2009-11-20 | Positioning pin and PCB positioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202606519U CN201563302U (en) | 2009-11-20 | 2009-11-20 | Positioning pin and PCB positioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201563302U true CN201563302U (en) | 2010-08-25 |
Family
ID=42628452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202606519U Expired - Fee Related CN201563302U (en) | 2009-11-20 | 2009-11-20 | Positioning pin and PCB positioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201563302U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069224A (en) * | 2010-12-23 | 2011-05-25 | 北大方正集团有限公司 | Milling method and milling equipment |
| CN102107290A (en) * | 2010-12-23 | 2011-06-29 | 北大方正集团有限公司 | Drilling method and drilling equipment |
| CN102114549A (en) * | 2010-12-23 | 2011-07-06 | 北大方正集团有限公司 | Drilling method and drilling device |
| CN102126040A (en) * | 2010-12-23 | 2011-07-20 | 北大方正集团有限公司 | Milling method and device |
| CN107182303A (en) * | 2017-06-06 | 2017-09-22 | 江苏新岛机械有限公司 | A kind of device for realizing the oblique cutterhead transmission of rotary cultivator |
-
2009
- 2009-11-20 CN CN2009202606519U patent/CN201563302U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069224A (en) * | 2010-12-23 | 2011-05-25 | 北大方正集团有限公司 | Milling method and milling equipment |
| CN102107290A (en) * | 2010-12-23 | 2011-06-29 | 北大方正集团有限公司 | Drilling method and drilling equipment |
| CN102114549A (en) * | 2010-12-23 | 2011-07-06 | 北大方正集团有限公司 | Drilling method and drilling device |
| CN102126040A (en) * | 2010-12-23 | 2011-07-20 | 北大方正集团有限公司 | Milling method and device |
| CN102114549B (en) * | 2010-12-23 | 2013-04-10 | 北大方正集团有限公司 | Drilling method and drilling device |
| CN102126040B (en) * | 2010-12-23 | 2013-06-26 | 北大方正集团有限公司 | Milling method and device |
| CN102107290B (en) * | 2010-12-23 | 2013-07-24 | 北大方正集团有限公司 | Drilling method and drilling equipment |
| CN102069224B (en) * | 2010-12-23 | 2014-05-07 | 北大方正集团有限公司 | Milling method |
| CN107182303A (en) * | 2017-06-06 | 2017-09-22 | 江苏新岛机械有限公司 | A kind of device for realizing the oblique cutterhead transmission of rotary cultivator |
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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: 20100825 Termination date: 20131120 |