CN108601242B - Device for solving problems of difficult adsorption of nuts and tin feeding of inner teeth for PCB - Google Patents
Device for solving problems of difficult adsorption of nuts and tin feeding of inner teeth for PCB Download PDFInfo
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- CN108601242B CN108601242B CN201810549333.8A CN201810549333A CN108601242B CN 108601242 B CN108601242 B CN 108601242B CN 201810549333 A CN201810549333 A CN 201810549333A CN 108601242 B CN108601242 B CN 108601242B
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- 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
- H05K3/36—Assembling printed circuits with other printed circuits
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- 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
- H05K3/22—Secondary treatment of printed circuits
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- Microelectronics & Electronic Packaging (AREA)
- Insertion Pins And Rivets (AREA)
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Abstract
The invention discloses a device for solving the problems of difficult adsorption of nuts and tin feeding of inner teeth for a PCB (printed circuit board), which comprises a plug, a telescopic control piece, a positioning piece and an elastic piece, wherein the telescopic control piece, the positioning piece and the elastic piece are arranged in the plug; an inner groove is formed in the plunger, a positioning piece guide hole communicated with the inner groove is formed in the side wall of the plunger, the positioning piece comprises a sliding block and a positioning rod, the positioning rod of the positioning piece extends out of the side wall of the plunger through the positioning piece guide hole, and the telescopic control piece is arranged in the inner groove through a guide hole in the plunger; the telescopic control piece comprises a telescopic control block, and the positioning piece is matched with the telescopic control block through a sliding block. Because the lower bottom surface is blocked by the plug bottom plate of the plug, the soldering tin cannot infiltrate into the threads of the screw hole, and the screw can be normally screwed into the nut. When the screw is screwed in, the guide rod retracts from the cylindrical surface of the round table of the plunger, the plunger is ejected out of the screw hole, and the plunger is recovered. The whole process solves the problems that the sucker can not adsorb, and the screw thread advances tin.
Description
Technical Field
The invention relates to the field of server PCB boards, in particular to a device for solving the problems of difficult adsorption of nuts and tin feeding of inner teeth for a PCB board.
Background
In the field of PCBA (printed circuit board assembly) boards, other circuit boards or protective covers are required to be mounted on the circuit boards, one common way is to weld a cylindrical nut in a corresponding position or a corresponding hole through soldering, the outer shape of the nut which is commonly used at present is in a step shape (shown in figure 8 of the specification), soldering tin is coated on the cylindrical surface of the lower step, then a device which needs to be fixed is fixed on the nut through screw nails, the positioning and welding quality of the nut are very important, and if the nut is positioned inaccurately, a part which is in butt joint with the nut cannot be accurately fixed; if the quality of the nut is poor after the nut is fixed, for example, tin is fed into the threads of the nut (molten tin enters the threads along the lower surface of the nut during welding), so that the threads at the lower part of the nut disappear, and the matched screw can not be locked.
In addition, when welding, the nut needs to be sucked up and moved to the corresponding position through the sucking disc, but the nut with the through hole is difficult to be sucked, and the current basic practice in the industry is to paste a thin patch on the upper surface (non-welding surface) of the nut to block the screw hole, so that the sucking disc sucks the nut on the patch to move. This general conventional approach temporarily solves the aspiration problem, but the side effects are also very large. The nut after the patch is attached to the upper surface is manually torn off when the circuit board or the protective cover is installed, otherwise, the screw cannot be screwed in from the upper part, however, the action of tearing off the patch is difficult, because the shape and the size of the patch are different, some manufacturers have slightly tiny points in order to save the point cost, the patch is difficult to tear off, and because the area of the patch is smaller than the plane area of the upper surface of the nut, the patch needs to be manually buckled off by nails at the place where the patch is not folded, the labor and the working hour are wasted, and the efficiency is very low.
Therefore, a device is needed at present, which can not only prevent the situation of tin feeding of threads, but also ensure the convenience of sucking disc adsorption.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a device for solving the problems of difficult adsorption of a nut and tin feeding of inner teeth for a PCB (printed circuit board), wherein a guide rod of a telescopic control piece is pushed downwards, so that an inward shrinkage groove of the telescopic control piece is matched with a sliding block of a positioning piece, the positioning rod is retracted into a plug round table, a plug is plugged into the lower part of the nut, the plug round table extends into a screw hole, a plug frustum is attached to a threaded hole at the lower part of the nut, and a plug bottom sheet is attached to the bottom surface of the lower part of the nut. Then upwards push the guide bar, the guide bar promotes flexible control block and removes, and the slider of setting element rolls off the indent under the restriction of elastic component and setting element guide hole, and flexible control block continues upwards to remove, moves to slider and the cooperation of extending groove, and the slider promotes the setting bar and extends, and the setting bar tip card is on the screw, and thus whole stopper just fixes in nut lower part screw, and the stopper film is hugged closely the nut bottom surface down. When welding, the nut is required to be adsorbed on the upper plane of the nut through the sucking disc, and the lower bottom surface is blocked by the plug, so that the sucking disc can easily adsorb the nut and move to the corresponding position. During welding, the sucking disc brings the nut to extend the lower cylinder of the nut into the welding hole of the circuit board, and then soldering is performed, and as the lower bottom surface is blocked by the plugged bottom piece of the plugged plug, the soldering tin cannot infiltrate into the threads of the screw hole, so that the screw can be normally screwed into the nut. When the screw is screwed in, the screw presses the guide rod to move downwards, the telescopic control block moves downwards, the positioning piece is separated from the outer extending groove and slides into the inner shrinking groove under the action of the elastic piece, the guide rod retracts from the cylindrical surface of the round table of the plunger, the screw is continuously screwed in, the plunger is ejected out of the screw hole, and the plunger is recovered. The whole process solves the problems that the sucker can not adsorb, the screw thread advances tin, and the device has simple structure and can be repeatedly utilized.
The technical scheme adopted for solving the technical problems is as follows:
the device for solving the problems of difficult adsorption of the nut for the PCB and tin feeding of the inner teeth comprises a plug, a telescopic control piece, a positioning piece and an elastic piece, wherein the telescopic control piece, the positioning piece and the elastic piece are arranged in the plug; an inner groove is formed in the plunger, a positioning piece guide hole communicated with the inner groove is formed in the side wall of the plunger, the positioning piece comprises a sliding block and a positioning rod, the positioning rod of the positioning piece extends out of the side wall of the plunger through the positioning piece guide hole, and the telescopic control piece is arranged in the inner groove through a guide hole in the plunger; the telescopic control piece comprises a telescopic control block, and the positioning piece is matched with the telescopic control block through a sliding block.
The plug comprises a plug bottom plate, a plug frustum arranged on the plug bottom plate, two plug bosses arranged on the plug frustum, two locating piece guide holes, wherein the two locating piece guide holes are coaxially arranged on the side wall of the plug bosses, the axes of the locating piece guide holes are perpendicular to the axes of the bosses, and the guide holes are through holes coaxial with the plug.
The upper end and the lower end of the telescopic control block are provided with guide rods which are in sliding fit with the guide holes, two surfaces of the telescopic control block facing the guide holes of the positioning pieces are provided with inward shrinkage grooves and outward shrinkage grooves, and the sliding blocks of the two positioning pieces are connected through elastic pieces; the sliding block is matched with the outward extending groove when the positioning rod extends out, and the sliding block is matched with the inward shrinking groove when the positioning rod retracts.
The plunger is divided into a first plunger and a second plunger along a radial line, a closing pin is arranged on the first plunger section, and a closing hole matched with the closing pin is arranged on the second plunger section.
After the locating rod extends out, the part of the locating rod extending out of the round table of the plug is a pointed end matched with the screw thread of the nut.
The inward shrinking groove and the outward shrinking groove are in transition through an inclined plane and an arc.
The plug round table is matched with the internal screw thread of the nut, the plug conical table is matched with the internal screw thread opening of the nut, and the diameter of the plug bottom sheet is larger than the large diameter of the screw thread of the nut and smaller than the diameter of the lower end of the cylinder of the nut.
When the sliding block of the positioning piece is matched with the outward extending groove, the lower end of the guide rod of the lower part of the telescopic control block is flush with the lower plane of the bottom plate of the plug, and when the sliding block of the positioning piece is matched with the inward extending groove, the upper end of the guide rod of the upper part of the telescopic control block is flush with the upper plane of the round table of the plug.
The beneficial effects of the invention are as follows:
1. the guide rod of the telescopic control piece is pushed downwards, so that the inward shrinkage groove of the telescopic control piece is matched with the sliding block of the positioning piece, the positioning rod is retracted into the plug round table, the plug is plugged into the lower portion of the nut, the plug round table extends into the screw hole, the plug conical table is attached to the threaded opening of the lower portion of the nut, and the plug bottom sheet is attached to the bottom surface of the lower portion of the nut. Then upwards push the guide bar, the guide bar promotes flexible control block and removes, and the slider of setting element rolls off the indent under the restriction of elastic component and setting element guide hole, and flexible control block continues upwards to remove, moves to slider and the cooperation of extending groove, and the slider promotes the setting bar and extends, and the setting bar tip card is on the screw, and thus whole stopper just fixes in nut lower part screw, and the stopper film is hugged closely the nut bottom surface down. When welding, the nut is required to be adsorbed on the upper plane of the nut through the sucking disc, and the lower bottom surface is blocked by the plug, so that the sucking disc can easily adsorb the nut and move to the corresponding position. During welding, the sucking disc brings the nut to extend the lower cylinder of the nut into the welding hole of the circuit board, and then soldering is performed, and as the lower bottom surface is blocked by the plugged bottom piece of the plugged plug, the soldering tin cannot infiltrate into the threads of the screw hole, so that the screw can be normally screwed into the nut. When the screw is screwed in, the screw presses the guide rod to move downwards, the telescopic control block moves downwards, the positioning piece is separated from the outer extending groove and slides into the inner shrinking groove under the action of the elastic piece, the guide rod retracts from the cylindrical surface of the round table of the plunger, the screw is continuously screwed in, the plunger is ejected out of the screw hole, and the plunger is recovered. The whole process solves the problems that the sucker can not adsorb, the screw thread advances tin, and the device has simple structure and can be repeatedly utilized.
2. The guide rod is adopted to drive the positioning piece to act, and manual and deliberate operation is not needed when the plunger is inserted into the plunger and the plunger is ejected out. When the plug is plugged, the lower plane of the plug bottom plate is required to be pressed to plug the plug into the screw hole, the guide rod is pressed into the plug in a proper state, at the moment, the outward extending groove of the telescopic control block is matched with the sliding block, and the positioning rod extends out to be propped against the screw thread of the nut. The same mode when ejecting the subsides stopper, the screw top is on the guide bar, and in the locating lever retracted subsides stopper, the subsides stopper deviate from the screw hole under the pressure of screw, and whole process does not have unnecessary procedure, and the process of pasting thin paster that mentions in the prior art is simpler than, and the device can retrieve moreover, has saved the material.
Drawings
FIG. 1 is an assembled view of the present invention;
FIG. 2 is a view of the present invention with a second plug removed;
FIG. 3 is a view of the telescoping control of the present invention;
FIG. 4 is a view of the telescoping control of the present invention mated with a positioning member and an elastic member;
FIG. 5 is a view of a plate retainer of the present invention;
FIG. 6 is a first view of a plug of the present invention;
FIG. 7 is a second view of a plug of the present invention;
fig. 8 is a view of the nut of the present invention.
In the figure: 1-first plug, 2-second plug, 3-telescopic control piece, 4-locating piece, 5-elastic piece, 6-nut, 11-plug negative, 12-plug frustum, 13-guiding piece, 14-inner groove, 15-locating piece guiding hole, 16-plug round table, 17-closing pin, 18-closing hole, 31-guiding rod, 32-telescopic control piece, 33-inner groove, 34-outer groove, 41-sliding block, 42-locating rod, 43-tip and 61-tinning layer.
Detailed Description
For a better understanding of the present invention, specific embodiments of the present invention are explained in detail below with reference to the drawings.
The device for solving the problems of difficult adsorption of the nuts and tin feeding of the inner teeth for the PCB comprises a plug, a telescopic control piece 3, a positioning piece 4 and an elastic piece 5, wherein the telescopic control piece 3, the positioning piece 4 and the elastic piece 5 are arranged in the plug; an inner groove 14 is formed in the plunger, positioning piece guide holes 15 communicated with the inner groove 14 are formed in the side wall of the plunger, the number of the positioning piece guide holes 15 is generally 1-4, and the telescopic control piece 3 and the inner groove 14 are correspondingly adjusted. The positioning piece 4 comprises a sliding block 41 and a positioning rod 42, the positioning rod 42 of the positioning piece 4 extends out of the side wall of the plunger through the positioning piece guide hole 15, and after the positioning rod 42 extends out, the part of the positioning rod 42 extending out of the plunger round table 16 is a pointed tip 43 matched with the screw thread of the nut. The telescopic control piece 3 is arranged in the inner groove 14 through a guide hole 13 on the plunger; the telescopic control member 3 comprises a telescopic control block 32, the positioning member 4 is matched with the telescopic control block 32 through a sliding block 41, and the shape and the size of the inner groove 14 are matched with the shape of the telescopic control block 32.
The plug comprises a plug bottom plate 11, a plug frustum 12 arranged on the plug bottom plate 11, and a plug round table 16 arranged on the plug frustum 12, wherein the plug bottom plate 11 and the plug frustum 12 are made of relatively soft rubber materials, so that screw holes can be better plugged. The two positioning piece guide holes 15 are preferably two, the two positioning piece guide holes 15 are coaxially arranged on the side wall of the round plug table 16, and the other scheme is that the axes of the two positioning piece guide holes 15 are parallel and different, and the positions of the inward shrinking slot 33 and the outward shrinking slot 34 on the telescopic control block 32 are correspondingly adjusted. The axis of the guide hole 15 of the positioning piece is perpendicular to the axis of the round plug table 16, and the guide hole is a through hole parallel to the axis of the plug.
The upper end and the lower end of the telescopic control block 32 are provided with guide rods 31, the guide rods 31 are in sliding fit with the guide holes 13, the two surfaces of the telescopic control block 32 facing the guide holes 15 of the positioning pieces are provided with inward shrinkage grooves 33 and outward shrinkage grooves 34, and the sliding blocks 41 of the two positioning pieces 4 are connected through elastic pieces 5; the slide 41 engages the outward extending groove 34 when the positioning rod 42 is extended, and the slide 41 engages the inward retracting groove 33 when the positioning rod 42 is retracted. When the slide block 41 of the positioning piece 4 is matched with the outward extending groove 34, the lower end of the guide rod 31 at the lower part of the telescopic control block 32 is flush with the lower plane of the plug bottom plate 11, and when the slide block 41 of the positioning piece 4 is matched with the inward extending groove 33, the upper end of the guide rod 31 at the upper part of the telescopic control block 32 is flush with the upper plane of the plug round table 16
The guide rod 31 is adopted to drive the positioning piece 4 to act, and the positioning piece 4 for fixing does not need to be manually and deliberately operated when the plunger is inserted into or ejected from the plunger. When the plunger is inserted, the plunger is inserted into the screw hole by pressing the lower plane of the plunger bottom plate 11, the guide rod 31 is inserted into the plunger in a proper manner, and at this time, the outward extending groove 34 of the telescopic control block 32 is matched with the sliding block 41, and the positioning rod 42 extends out to be propped against the screw thread of the nut. In the same manner as when the plunger is ejected, the screw is pushed against the guide rod 31, the positioning rod 42 is retracted into the plunger, and the plunger is pulled out of the threaded hole under the pressure of the screw.
The plunger is divided into a first plunger 1 and a second plunger 2 along a radial line, a closing pin 17 is arranged on the section of the first plunger 1, and a closing hole 18 matched with the closing pin 17 is arranged on the section of the second plunger 2. The plunger cone 16 is matched with the internal screw thread of the nut, the plunger cone 12 is matched with the internal screw thread opening of the nut, and the diameter of the plunger bottom plate 11 is larger than the large diameter of the screw thread of the nut and smaller than the diameter of the lower end of the cylinder of the nut.
The operation process of the invention is as follows: the guide rod 31 of the telescopic control member 3 is pushed downwards, so that the inward shrinkage groove 33 of the telescopic control member 32 is matched with the sliding block 41 of the positioning member 4, the positioning rod 42 is retracted into the plunger round table 16, the plunger is plugged from the lower part of the nut, the plunger round table 16 stretches into the screw hole, the plunger frustum 12 is attached to the threaded opening of the lower part of the nut, and the plunger bottom sheet 11 is attached to the bottom surface of the lower part of the nut. Then, the guide rod 31 is pushed upwards, the guide rod 31 pushes the telescopic control block 32 to move, the sliding block 41 of the positioning piece 4 slides out of the inward shrinking groove 33 under the limit of the elastic piece 5 and the guide hole 15 of the positioning piece, the telescopic control block 32 continues to move upwards until the sliding block 41 is matched with the outward shrinking groove 34, the sliding block 41 pushes the positioning rod 42 to extend outwards, the pointed tip 43 of the positioning rod 42 is clamped on the screw thread, thus the whole plug is fixed in the screw hole at the lower part of the nut, and the plug negative 11 is tightly attached to the lower bottom surface of the nut.
When welding, the nut is required to be adsorbed on the upper plane of the nut through the sucking disc, and the lower bottom surface is blocked by the plug, so that the sucking disc can easily adsorb the nut and move to the corresponding position. During welding, the sucking disc brings the nut to extend the lower cylinder of the nut into the welding hole of the circuit board, and then soldering is performed, and as the lower bottom surface is blocked by the plugged bottom plate 11, the soldering tin cannot infiltrate into the threads of the screw hole, so that the screw can be normally screwed into the nut. When the screw is screwed in, the screw presses the guide rod 31 to move downwards, the telescopic control block 32 moves downwards, the positioning piece 4 is separated from the outward extending groove 34, the sliding block 41 is matched with the inward shrinking groove 33 under the action of the elastic piece 5, the guide rod 31 retracts from the cylindrical surface of the round table 16 of the plunger, the screw is continuously screwed in, the plunger is ejected out of the screw hole, and the plunger is recovered. The whole process solves the problems that the sucker can not adsorb, the screw thread advances tin, and the device has simple structure and can be repeatedly utilized.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (8)
1. The device for solving the problems of difficult adsorption of the nut for the PCB and tin feeding of the inner teeth is characterized by comprising a plug, a telescopic control piece, a positioning piece and an elastic piece, wherein the telescopic control piece, the positioning piece and the elastic piece are arranged in the plug; an inner groove is formed in the plunger, a positioning piece guide hole communicated with the inner groove is formed in the side wall of the plunger, the positioning piece comprises a sliding block and a positioning rod, the sliding block is connected with the elastic piece, the positioning rod of the positioning piece extends out of the side wall of the plunger through the positioning piece guide hole, and the telescopic control piece is arranged in the inner groove through a guide hole in the plunger; the telescopic control piece comprises a telescopic control block, the telescopic control block is provided with an inward shrinkage groove and an outward shrinkage groove, the positioning piece is matched with the telescopic control block through a sliding block, when the positioning rod extends out of the side wall of the sticking plug, the sliding block is matched with the outward shrinkage groove, the sticking plug is fixed in a screw hole of the nut, and the sticking plug blocks the lower bottom surface of the nut; when the locating rod retracts to the side wall of the plunger, the sliding block is matched with the inward shrinking groove.
2. The device for solving the problems of difficult adsorption of nuts and tin feeding of inner teeth for a PCB (printed circuit board) according to claim 1, wherein the plug comprises a plug bottom plate, a plug frustum arranged on the plug bottom plate, a plug round table arranged on the plug frustum, two positioning piece guide holes and a guide hole, wherein the two positioning piece guide holes are coaxially arranged on the side wall of the plug round table, the axis of each positioning piece guide hole is perpendicular to the axis of the plug round table, and the guide hole is a through hole parallel to the axis of the plug round table.
3. The device for solving the problems of difficult adsorption of nuts and tin feeding of inner teeth for a PCB according to one of claims 1 or 2, wherein guide rods are arranged at the upper end and the lower end of the telescopic control block, the guide rods are in sliding fit with the guide holes, the two surfaces of the telescopic control block facing the guide holes of the positioning pieces are respectively provided with an inward shrinking groove and an outward stretching groove, and the sliding blocks of the two positioning pieces are connected through elastic pieces.
4. The device for solving the problems of difficult adsorption and inner tooth tin feeding of the nuts for the PCB according to claim 1, wherein the plugs are divided into a first plug and a second plug along a radial line, a closing pin is arranged on a first plug section, and a closing hole matched with the closing pin is arranged on a second plug section.
5. The device for solving the problems of difficult adsorption of the nut and tin feeding of the inner teeth for the PCB according to claim 1, wherein after the positioning rod stretches out, the part of the positioning rod stretching out of the round table of the plug is a pointed end matched with the screw thread of the nut.
6. The device for solving the problems of difficult adsorption of the nuts and tin feeding of the inner teeth for the PCB according to claim 1, wherein the inward shrinking groove and the outward shrinking groove are transited through inclined planes and circular arcs.
7. The device for solving the problems of difficult adsorption and tin feeding of inner teeth of the nut for the PCB according to claim 2, wherein the plug round table is matched with the inner screw thread of the nut, the plug round table is matched with the inner screw thread opening of the nut, and the diameter of the plug bottom plate is larger than the larger diameter of the screw thread of the nut and smaller than the diameter of the lower end of the cylinder of the nut.
8. The device for solving the problems of difficult adsorption of the nuts and tin feeding of the inner teeth for the PCB according to claim 3, wherein when the sliding block of the positioning piece is matched with the outward extending groove, the lower end of the guide rod at the lower part of the telescopic control block is flush with the lower plane of the bottom plate of the plug, and when the sliding block of the positioning piece is matched with the inward extending groove, the upper end of the guide rod at the upper part of the telescopic control block is flush with the upper plane of the round table of the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549333.8A CN108601242B (en) | 2018-05-31 | 2018-05-31 | Device for solving problems of difficult adsorption of nuts and tin feeding of inner teeth for PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549333.8A CN108601242B (en) | 2018-05-31 | 2018-05-31 | Device for solving problems of difficult adsorption of nuts and tin feeding of inner teeth for PCB |
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| Publication Number | Publication Date |
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| CN108601242A CN108601242A (en) | 2018-09-28 |
| CN108601242B true CN108601242B (en) | 2023-07-14 |
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| CN201810549333.8A Active CN108601242B (en) | 2018-05-31 | 2018-05-31 | Device for solving problems of difficult adsorption of nuts and tin feeding of inner teeth for PCB |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007035992A (en) * | 2005-07-28 | 2007-02-08 | Sharp Corp | Surface-mounted nut for printed wiring board |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6399887B1 (en) * | 2000-06-05 | 2002-06-04 | Chiang Chun Lin | Stud assembly structure of computer mother board capable of being assembled by automatic machine |
| CN2547095Y (en) * | 2002-05-29 | 2003-04-23 | 林江俊 | Double-screw bolt package assembly capable of being absorbed by automatic tool |
| TWI280825B (en) * | 2004-11-01 | 2007-05-01 | Emi Stop Corp | Feeding belt having SMT devices and suction nozzle for moving a SMT device |
| CN200962698Y (en) * | 2006-09-27 | 2007-10-17 | 许世桦 | Thermal fusion clamp pole structure |
| US7703200B2 (en) * | 2008-02-18 | 2010-04-27 | Fivetech Technology Inc. | Packaging method for assembling screw on printed circuit board |
| TW201016082A (en) * | 2008-10-09 | 2010-04-16 | ding-rui Wang | Packaging method of combining sleeve screw with printed circuit board |
| DE102009036025A1 (en) * | 2009-08-04 | 2011-02-10 | Siemens Aktiengesellschaft | Electrical connection arrangement, process for their preparation and their use |
| CN205629691U (en) * | 2016-05-12 | 2016-10-12 | 常州市武进恒辉通信设备有限公司 | Electronic component welding set convenient to use |
| CN208317141U (en) * | 2018-05-31 | 2019-01-01 | 郑州云海信息技术有限公司 | It is a kind of solve the problems, such as that the absorption of pcb board nut is difficult and interior tooth into tin device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007035992A (en) * | 2005-07-28 | 2007-02-08 | Sharp Corp | Surface-mounted nut for printed wiring board |
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