CN112310692B - Prevent excursion to participate in and welding plug-in components - Google Patents
Prevent excursion to participate in and welding plug-in components Download PDFInfo
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- CN112310692B CN112310692B CN202011185624.7A CN202011185624A CN112310692B CN 112310692 B CN112310692 B CN 112310692B CN 202011185624 A CN202011185624 A CN 202011185624A CN 112310692 B CN112310692 B CN 112310692B
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- pin
- main pin
- jacking
- main
- pcb
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- 238000003466 welding Methods 0.000 title claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 2
- 238000013508 migration Methods 0.000 claims 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 10
- 238000005476 soldering Methods 0.000 abstract description 8
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/3447—Lead-in-hole components
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention discloses an anti-deviation pin, wherein one end of a main pin is connected with a plug-in body part, and the main pin can be inserted into a jack arranged on a PCB (printed circuit board); one end of the auxiliary pin is connected to the side wall of the main pin and can be turned over relative to the main pin; the inside slidable mounting jacking rod of main pin, the jacking rod can slide for the axis direction of main pin, the surface protrusion of jacking rod sets up the jacking lug, the surface of main pin can be stretched out to the jacking lug, in order to promote the inside roof pressure contact of jack on supplementary pin upset and the PCB board, the jacking lug is more nearly with the pivot distance of supplementary pin, supplementary pin is big more for the angle that opens of main pin, radial scope increase when supplementary pin opens, can with the great jack lateral wall contact of internal diameter on the PCB board, make main pin receive the effort that circumference was injectd, the position relatively fixed of jack on main pin and the PCB board, the phenomenon of skew can not appear, effectively avoid the not problem of adjusting of tip position at the in-process of soldering tin.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to an anti-shifting pin. The invention further relates to a welding insert.
Background
Some parts of the electronic parts are plug-ins, such as some connectors or LED lamps, and the parts of the plug-ins are provided with pins, the pins are inserted into holes in the PCB from the front to the back of the PCB, and then the pins are welded on the holes through wave soldering; PCB board is kept flat among the welding process, and the main part of plug-in components is supported by the PCB board, and the pin is vertical to be stretched to the back below of PCB board, and the tin of PCB board back heating forms liquid, climbs along the pin from the back, gets into on the pore wall of PCB board, and the temperature is reduced again, lets the tin cooling get off, forms solid-state tin.
Because the pins need to be passed through holes in the PCB, the diameter of the pins generally needs to be much smaller than the diameter of the holes in the PCB in view of workability and convenience of inserting the connector at the time of production. However, the diameter of the part is greatly different from the diameter of the hole in the PCB, the part can shake after being inserted into the PCB, and during wave soldering, liquid tin liquid has not small buoyancy, so that the part can deflect or deviate after being soldered.
For those skilled in the art, how to prevent the soldered inserts on the PCB from shifting is a technical problem to be solved.
Disclosure of Invention
The invention provides an anti-offset pin which can prevent an insert welded on a PCB from offsetting and reduce the rework rate, and the specific scheme is as follows:
an anti-offset pin comprises a main pin and an auxiliary pin, wherein one end of the main pin is connected to a plug-in body part and used for being inserted into an insertion hole in a PCB, and one end of the auxiliary pin is connected to the side wall of the main pin and can be turned over relative to the main pin;
the inner part of the main pin is provided with a jacking rod in a sliding mode, the jacking rod can slide relative to the axis direction of the main pin, a jacking convex block is arranged on the outer surface of the jacking rod in a protruding mode, and the jacking convex block can extend out of the outer surface of the main pin so as to push the auxiliary pin to turn over and contact with the inner part of the jack on the PCB in a jacking mode.
Optionally, the auxiliary pin is connected to the main pin through a torsion spring, and the torsion spring can apply a torsion force to the auxiliary pin, wherein the torsion force is attached to a side wall of the main pin.
Optionally, the jacking bump is bent in an L shape, and a portion of the jacking bump parallel to the main pin can be inserted between the auxiliary pin and the main pin.
Optionally, the outer surface protrusion of main pin sets up the locating convex block, the surface of jacking lug sets up a plurality of positioning groove in a row, the locating convex block with the mutual joint cooperation of positioning groove is injectd the vertical position of jacking pole.
Optionally, guide holes are vertically formed in the side walls of the main pins, and the guide holes are used for limiting the limit positions of the two ends of the sliding displacement of the positioning protruding block.
The invention also provides a welding plug-in which comprises a plug-in body, wherein any one of the deviation-preventing pins is arranged on the plug-in body.
Optionally, the side wall of the plug-in unit body is fixedly provided with a supporting leg, and the bottom surface of the supporting leg is lower than the bottom surface of the plug-in unit body and can be adhered and fixed with the PCB.
The invention provides an anti-deviation pin, which comprises a main pin and an auxiliary pin, wherein one end of the main pin is connected with a plug-in body part, and the main pin can be inserted into a jack arranged on a PCB (printed circuit board); one end of the auxiliary pin is connected to the side wall of the main pin and can be turned over relative to the main pin; the inside slidable mounting jacking rod of main pin, the jacking rod can slide for the axis direction of main pin, the surface protrusion of jacking rod sets up the jacking lug, the surface of main pin can be stretched out to the jacking lug, in order to promote the inside roof pressure contact of jack on supplementary pin upset and the PCB board, the jacking lug is more nearly with the pivot distance of supplementary pin, supplementary pin is big more for the angle that opens of main pin, radial scope increase when supplementary pin opens, can with the great jack lateral wall contact of internal diameter on the PCB board, make main pin receive the effort that circumference was injectd, the position relatively fixed of jack on main pin and the PCB board, the phenomenon of skew can not appear, effectively avoid the not problem of adjusting of tip position at the in-process of soldering tin.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of an embodiment of an anti-offset pin according to the present invention;
fig. 2 is a partial structure diagram of the main pin 1 and the jacking bump 31 matching with each other;
fig. 3 is an overall structural view of the welding insert provided by the present invention.
The drawing comprises the following steps:
the plug-in connector comprises a main pin 1, a positioning bump 11, an auxiliary pin 2, a jacking rod 3, a jacking bump 31, a positioning groove 32, a plug-in connector body 4 and supporting legs 5.
Detailed Description
The core of the invention is to provide an anti-offset pin which can prevent an insert welded on a PCB from offsetting and reduce the rework rate.
In order to make the technical solution of the present invention better understood by those skilled in the art, the anti-deviation pin and the soldering insert of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic cross-sectional view of an embodiment of an anti-shift pin according to the present invention; the anti-deviation pin comprises a main pin 1 and an auxiliary pin 2, one end of the main pin 1 is connected to the part of the plug-in body, as shown in figure 1, the top end of the main pin 1 is relatively and fixedly connected with the plug-in body, the main pin 1 can be inserted into an insertion hole formed in a PCB, and for the convenience of insertion, the radial dimension of the main pin 1 is smaller than that of the insertion hole in the PCB, so that the main pin can be easily and correspondingly inserted.
One end of each auxiliary pin 2 is connected to the side wall of the corresponding main pin 1 and can be turned over relative to the corresponding main pin 1, and the auxiliary pins 2 are arranged in at least two rows in the circumferential direction of the corresponding main pin 1; the axis direction of auxiliary pin 2 for main pin 1's pivot perpendicular to main pin 1, the contained angle of the extending direction of auxiliary pin 2 and the axis direction of main pin 1 is at 0~90 degrees pivoted in-process, the contained angle is big more, then the radial dimension of auxiliary pin 2 is big more, also be size d in fig. 1, the radial dimension constantly increases at the open in-process of auxiliary pin 2, it produces the extrusion force to reach the edge of auxiliary pin 2 and the jack on the PCB board mutual contact, main pin 1 contacts through the jack inner wall of a plurality of auxiliary pins 2 of peripheral setting and PCB board, through auxiliary pin 2 transmission effort and reaction force between the jack inner wall of main pin 1 and PCB board, the position between the jack of main pin 1 and PCB board keeps relatively fixed.
Inside slidable mounting jacking rod 3 of main pin 1, jacking rod 3 can slide for main pin 1's axis direction, main pin 1's lateral wall sets up the trompil, jacking rod 3's surface protrusion sets up jacking lug 31, jacking lug 31 stretches out main pin 1's surface through the trompil of lateral wall, can promote supplementary pin 2 upset along with the in-process that jacking rod 3 removed when jacking lug 31, and then with the inside roof pressure contact of jack on the PCB board, make main pin 1 injectd by circumference, even receive other external forces also can not remove for the jack.
During operation, the main pin 1 is inserted into an insertion hole on a PCB, the pin body is arranged above the PCB, and the pin body is supported by the PCB, as shown in figure 1, the main pin 1 is vertically arranged; the jacking rod 3 slides upwards, the jacking rod 3 pushes the auxiliary pins 2 to open in the process of upwards sliding relative to the main pins 1, the auxiliary pins 2 are in contact with the inner surface of the jacks of the PCB, and the auxiliary pins 2 are distributed along the circumferential direction of the main pins 1, so that the main pins 1 can be automatically kept in the centers of the jacks, and the positions of the pin bodies can be adjusted in place. Welding the main pin 1 to the jack by wave soldering; in the welding process, tin heated on the back surface of the PCB forms a liquid state, climbs along the main pin from the back surface, enters the hole wall of the PCB, and then the temperature is reduced, so that the tin is cooled down to form solid tin. The main pin 1 is hollow, so that the tin liquid can smoothly pass through the main pin; after the tin is solidified, part of the tin penetrates into the open holes on the side wall of the main pin 1, so that the connection firmness can be improved.
On the basis of the scheme, the auxiliary pin 2 is connected to the main pin 1 through the torsion spring, the torsion spring can apply torsion force which is attached to the side wall of the main pin 1 to the auxiliary pin 2, under the condition that other external force is not applied, the auxiliary pin 2 has the tendency of being attached to the main pin 1, and the jacking bump 31 pushes the auxiliary pin 2 to be opened in the upward movement process.
Specifically, the lift-up projection 31 of the present invention is bent in an L-shape, the lift-up projection 31 has a portion perpendicular to the main pin 1 and a portion parallel to the main pin 1, and the portion of the lift-up projection 31 parallel to the main pin 1 can be inserted between the auxiliary pin 2 and the main pin 1 to lift the auxiliary pin 2 circumferentially.
As shown in fig. 2, it is a partial structure diagram of the main pin 1 and the jacking bump 31 matching with each other; the outer surface of the main pin 1 is convexly provided with a positioning lug 11, the outer surface of the jacking lug 31 is provided with a plurality of positioning grooves 32 in rows, and the arrangement of the positioning grooves 32 is along the length direction of the main pin 1; the positioning lug 11 and the positioning groove 32 are mutually clamped and matched to limit the vertical position of the jacking rod 3, and the positioning lug 11 and different positioning grooves 32 are matched to enable the jacking lug 31 to be limited and kept at a specific height to form a plurality of different gears.
Vertical guiding hole that sets up along on main pin 1's lateral wall, every locating convex block 11 corresponds a guiding hole, and the guiding hole is used for injecing the both ends extreme position of 11 sliding displacement of locating convex block, and when moving to the top or the below, the tip contact is spacing about jacking lug 31 respectively with the guiding hole on the main pin 1 lateral wall, and jacking lug 31 reciprocates in the within range of guiding hole.
The invention also provides a welding plug-in, as shown in fig. 3, which is an overall structure diagram of the welding plug-in provided by the invention, and comprises a plug-in body 4 and an anti-deviation pin, and fig. 3 shows that two anti-deviation pins are arranged, and the welding plug-in can achieve the same technical effect. For the structure of other parts of the soldering plug-in unit, please refer to the prior art, and the description of the invention is omitted here.
Furthermore, the invention fixedly installs the supporting foot 5 on the side wall of the plug-in unit body 4, the bottom surface of the supporting foot 5 is lower than the bottom surface of the plug-in unit body 4, the bottom surface of the supporting foot 5 can contact with the upper surface of the PCB, the bottom surface of the supporting foot 5 is provided with the double faced adhesive tape, and the supporting foot 5 and the PCB can be mutually pasted and fixed.
After the plug-in unit body 4 is placed on the PCB, the plug-in unit body 4 and the PCB are preliminarily pre-positioned through the double faced adhesive tape arranged on the bottom surface of the supporting leg 5, so that subsequent operation is facilitated; because the temperature is higher in the welding process, the glue is melted when heated, the double-sided adhesive tape only has a good fixing effect at normal temperature, and the connection between the PCB and the plug-in is mainly realized through soldering tin.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The anti-deviation pin is characterized by comprising a main pin (1) and an auxiliary pin (2), wherein one end of the main pin (1) is connected to the body part of a plug-in unit and is used for being inserted into a jack on a PCB (printed circuit board), and one end of the auxiliary pin (2) is connected to the side wall of the main pin (1) and can be turned over relative to the main pin (1);
a jacking rod (3) is slidably mounted inside the main pin (1), the jacking rod (3) can slide relative to the axis direction of the main pin (1), a jacking lug (31) is arranged on the outer surface of the jacking rod (3) in a protruding mode, and the jacking lug (31) can extend out of the outer surface of the main pin (1) so as to push the auxiliary pin (2) to turn over and contact with the inner portion of the jack on the PCB in a jacking mode;
the outer surface protrusion of main pin (1) sets up positioning convex block (11), the surface of jacking lug (31) sets up a plurality of positioning groove (32) in a row, positioning convex block (11) with positioning groove (32) joint cooperation each other is injectd the vertical position of jacking pole (3).
2. Anti-migration pin according to claim 1, characterized in that the auxiliary pin (2) is connected to the main pin (1) by a torsion spring able to exert a twisting force on the auxiliary pin (2) against the side wall of the main pin (1).
3. Anti-migration pin according to claim 2, characterized in that the lifting lug (31) is bent in an L-shape, the part of the lifting lug (31) parallel to the main pin (1) being insertable between the auxiliary pin (2) and the main pin (1).
4. The anti-deviation pin according to claim 3, characterized in that the side wall of the main pin (1) is vertically provided with guide holes for limiting the extreme positions of the two ends of the sliding displacement of the positioning convex block (11).
5. A welding insert comprising an insert body (4), characterized in that the insert body (4) is provided with an anti-migration pin according to any of claims 1 to 4.
6. The welding insert according to claim 5, wherein the side wall of the insert body (4) is fixedly provided with a supporting leg (5), and the bottom surface of the supporting leg (5) is lower than the bottom surface of the insert body (4) and can be mutually adhered and fixed with a PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011185624.7A CN112310692B (en) | 2020-10-29 | 2020-10-29 | Prevent excursion to participate in and welding plug-in components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011185624.7A CN112310692B (en) | 2020-10-29 | 2020-10-29 | Prevent excursion to participate in and welding plug-in components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112310692A CN112310692A (en) | 2021-02-02 |
| CN112310692B true CN112310692B (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011185624.7A Active CN112310692B (en) | 2020-10-29 | 2020-10-29 | Prevent excursion to participate in and welding plug-in components |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112310692B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938984A (en) * | 2012-10-17 | 2013-02-20 | 宁波凯耀电器制造有限公司 | Vertical element pin structure for being welded to PCB (Printed Circuit Board) |
| CN109951967A (en) * | 2019-02-25 | 2019-06-28 | 河北工程大学 | A kind of accurate auxiliary device in diode pin welding position |
| CN211081923U (en) * | 2019-08-09 | 2020-07-24 | 安徽理工大学 | Novel anchor rod with movable barbs |
-
2020
- 2020-10-29 CN CN202011185624.7A patent/CN112310692B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938984A (en) * | 2012-10-17 | 2013-02-20 | 宁波凯耀电器制造有限公司 | Vertical element pin structure for being welded to PCB (Printed Circuit Board) |
| CN109951967A (en) * | 2019-02-25 | 2019-06-28 | 河北工程大学 | A kind of accurate auxiliary device in diode pin welding position |
| CN211081923U (en) * | 2019-08-09 | 2020-07-24 | 安徽理工大学 | Novel anchor rod with movable barbs |
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| Publication number | Publication date |
|---|---|
| CN112310692A (en) | 2021-02-02 |
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