CN114542564A - Expansion fixing pin - Google Patents
Expansion fixing pin Download PDFInfo
- Publication number
- CN114542564A CN114542564A CN202210112238.8A CN202210112238A CN114542564A CN 114542564 A CN114542564 A CN 114542564A CN 202210112238 A CN202210112238 A CN 202210112238A CN 114542564 A CN114542564 A CN 114542564A
- Authority
- CN
- China
- Prior art keywords
- expansion
- pin body
- screw
- hole
- pin
- 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.)
- Pending
Links
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/065—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting the screw, nail or the like
Abstract
The invention relates to an expansion fixing pin which comprises a pin body of a cylindrical pin and an expansion screw, wherein an axially-penetrating abdicating hole is formed in the center of the pin body, the abdicating hole is a threaded hole with a wide upper end and a narrow lower end, an inwards-protruding bulge is arranged at the joint of the large end and the small end, internal threads are arranged on the side wall of the large end of the abdicating hole, a plurality of open slots for expansion deformation are formed in the expansion end of the pin body, the expansion end of the pin body is elastically deformed, the expansion screw is provided with external threads, the expansion screw is in threaded fit with the abdicating hole of the pin body, and the expansion end of the pin body is expanded and deformed when the expansion screw is screwed in the abdicating hole.
Description
Technical Field
The invention relates to the technical field of positioning elements, in particular to an expansion fixing pin.
Background
In the design of the existing tool, when positioning is carried out in a mode of one surface and two pins, the structure of the positioning pin generally adopts a fixed cylindrical pin, however, when the fixed cylindrical pin is matched with a pin hole of a positioning plate, the two conditions are generally divided into two conditions, one is clearance fit, although the clearance between the fixed cylindrical pin and the pin hole of the positioning plate is very small, the positioning precision of the matching mode is poor, and the fixed cylindrical pin and the pin hole of the positioning plate are not fixed, so that the fixed cylindrical pin is easily taken out of a workpiece or a product from the pin hole of the positioning plate and falls off in the using process; the other is to adopt interference fit, and although this kind of cooperation mode has solved the problem that fixed cylindric lock drops from the locating plate pinhole easily, this kind of cooperation mode can cause the dismouting difficulty between fixed cylindric lock and the locating plate pinhole to owing to be interference fit, fixed cylindric lock damages very easily when dismantling from the locating plate pinhole, causes very high use cost.
Disclosure of Invention
The invention aims to provide an expansion fixing pin aiming at the defects of the prior art, which has the advantages of simple structure, accurate positioning, tight connection with a positioning plate, convenient installation and disassembly and difficult damage during disassembly and assembly.
The technical scheme of the invention is as follows: the utility model provides an inflation fixed pin, includes the round pin body and the inflation screw of cylindric lock, the center of the round pin body sets up the hole of stepping down that an axial runs through, the hole of stepping down is the narrow screw hole of the wide lower extreme in upper end, main aspects and tip junction set up to inside convex bulge, the lateral wall of the hole main aspects of stepping down is equipped with the internal thread, the inflation end of the round pin body sets up a plurality of open slots that are used for the dilatational strain, and the inflation end of the round pin body has elastic deformation, the inflation screw is equipped with the external screw thread, inflation screw thread fit makes the inflation end of the round pin body produce dilatational strain when screwing up in the hole of stepping down.
The number of the open slots at the expansion end of the pin body is four.
The open slot of the pin body is communicated with the abdicating hole.
The expansion screw is an inner hexagon screw with a conical end.
The conical part at the lower end of the expansion screw is the same as the protruding part of the abdicating hole of the pin body in size and shape.
The pin body is in a step shape, the upper end of the pin body is a large-diameter end, the lower end of the pin body is a small-diameter end, and the open slot is formed in the small-diameter end.
And a flange is arranged in the middle of the pin body.
The invention has the beneficial effects that: the expansion fixing pin disclosed by the invention can be quickly installed and disassembled on the positioning plate, is firm and reliable after being fixed, has high positioning precision, is not easy to damage in the disassembling process, has a good service life, and greatly saves the use cost.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view of the construction of the pin body of the present invention;
FIG. 4 is a schematic structural view of the expansion screw of the present invention;
FIG. 5 is a schematic structural diagram of an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another embodiment of the present invention.
In the drawing, a pin body 1, a relief hole 11, a bulge 12, an expansion end 13, an open slot 14, a flange 15 and an expansion screw 2.
Detailed Description
Referring to fig. 1 to 6, an inflation fixed pin, round pin body 1 and inflation screw 2 including the cylindric lock, the center of round pin body 1 sets up the hole of stepping down 11 that an axial runs through, the hole of stepping down 11 is the narrow screw hole of the wide lower extreme in upper end, main aspects and tip junction set up to inside convex bulge 12, the lateral wall of the hole of stepping down 11 main aspects is equipped with the internal thread, the inflation end 13 of round pin body 1 sets up a plurality of open slots 14 that are used for the dilatational deformation, and the inflation end 13 of round pin body 1 has elastic deformation, inflation screw 2 is equipped with the external screw thread, inflation screw 2 screw thread fit is in the hole of stepping down 11 of round pin body 1, and inflation screw 2 makes the inflation end 13 of round pin body 1 produce the dilatational deformation when screwing up in the hole of stepping down 11.
Embodiment 3, this embodiment is different from embodiment 1 in that a flange 15 is provided in the middle of the pin body 1 of this embodiment.
The size and the shape of the expansion fixing pin can be adjusted and manufactured according to actual requirements.
When the positioning plate is matched and positioned, the device is operated and used according to the following steps:
the expansion end 13 of the pin body 1 of the expansion fixing pin in a non-expansion state, which is provided with the open slot 14, is inserted into the pin hole in the positioning plate, then the expansion screw 2 in the abdicating hole 11 is screwed, at the moment, the small diameter section of the abdicating hole 11 of the pin body 1 is outwards extruded by the conical part at the lower end of the expansion screw 2, the expansion end 13 of the pin body 1 is outwards expanded along the open slot 14, so that the expansion fixing pin is fixed in the pin hole of the positioning plate, when the expansion fixing pin needs to be disassembled and replaced, only the expansion screw 2 needs to be unscrewed, the open slot 14 part of the expansion end 13 of the pin body 1 is rebounded, then the expansion fixing pin is taken out of the pin hole, and the installation and the disassembly of the expansion fixing pin are rapidly completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and modifications of the present invention by those skilled in the art are within the scope of the present invention without departing from the spirit of the present invention.
Claims (7)
1. An expansion anchor pin, comprising: the round pin body and the expansion screw including the cylindric lock, the center of the round pin body sets up the hole of stepping down that an axial runs through, the hole of stepping down is the narrow screw hole of the wide lower extreme in upper end, main aspects and tip junction set up to inside convex bulge, the lateral wall of the hole main aspects of stepping down is equipped with the external screw thread, the expansion end of the round pin body sets up a plurality of open slots that are used for the dilatational deformation, and the expansion end of the round pin body has elastic deformation, the expansion screw is equipped with the external screw thread, the screw-thread fit of expansion screw makes the expansion end of the round pin body produce dilatational deformation when screwing up in the hole of stepping down.
2. The expansion fixation pin according to claim 1, characterized in that: the number of the open grooves at the expansion end of the pin body is four.
3. The expansion fixation pin according to claim 1, characterized in that: the open slot of the pin body is communicated with the abdicating hole.
4. The expansion fixation pin according to claim 1, characterized in that: the lower end part of the expansion screw is an outer cone, the middle part of the expansion screw is a cylinder, and the upper end part of the expansion screw is an inner hexagon screw with external threads.
5. The expansion fixation pin according to claim 1, characterized in that: the conical part at the lower end of the expansion screw is the same as the protruding part of the abdicating hole of the pin body in size and shape.
6. The expansion fixation pin according to claim 1, characterized in that: the pin body is in a step shape, the upper end of the pin body is a large-diameter end, the lower end of the pin body is a small-diameter end, and the open slot is formed in the small-diameter end.
7. The expansion fixation pin according to claim 1, characterized in that: and a flange is arranged in the middle of the pin body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210112238.8A CN114542564A (en) | 2022-01-29 | 2022-01-29 | Expansion fixing pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210112238.8A CN114542564A (en) | 2022-01-29 | 2022-01-29 | Expansion fixing pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114542564A true CN114542564A (en) | 2022-05-27 |
Family
ID=81673427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210112238.8A Pending CN114542564A (en) | 2022-01-29 | 2022-01-29 | Expansion fixing pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114542564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115229442A (en) * | 2022-07-28 | 2022-10-25 | 大连日牵电机有限公司 | Combined machining method for frame and planet carrier of mining dump truck |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378565Y (en) * | 1999-06-01 | 2000-05-17 | 李小明 | Expanded pin with new structure |
| CN1587724A (en) * | 2004-08-02 | 2005-03-02 | 马庆友 | Hardware piece with expansion end and its matching spanners |
| EP2037130A1 (en) * | 2007-09-12 | 2009-03-18 | Continental Automotive GmbH | Attachment device |
| WO2011042159A2 (en) * | 2009-10-07 | 2011-04-14 | Trw Automotive Electronics & Components Gmbh | Connection assembly and method for removable fastening an attachment part to a carrier |
| CN203297236U (en) * | 2013-06-17 | 2013-11-20 | 金方明 | Toothpaste filling machine cross expansion pin |
| EP3144546A1 (en) * | 2015-09-18 | 2017-03-22 | SFS intec Holding AG | Connection device, connection assembly and method for producing a connection device |
| CN107493683A (en) * | 2015-02-13 | 2017-12-19 | 崔维斯·D.·麦克鲁尔 | Hole alignment tools with compliance provincial characteristics |
| CN208961906U (en) * | 2018-08-21 | 2019-06-11 | 沈阳利源轨道交通装备有限公司 | A kind of elastic cylindrical pin provision for disengagement |
| CN210739063U (en) * | 2019-09-12 | 2020-06-12 | 广州市珠江灯光科技有限公司 | Mounting structure of fixed cover, fixed subassembly and accuse light component |
| CN213839193U (en) * | 2020-12-02 | 2021-07-30 | 深圳市深溢电子科技有限公司 | Expansion positioning pin |
-
2022
- 2022-01-29 CN CN202210112238.8A patent/CN114542564A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378565Y (en) * | 1999-06-01 | 2000-05-17 | 李小明 | Expanded pin with new structure |
| CN1587724A (en) * | 2004-08-02 | 2005-03-02 | 马庆友 | Hardware piece with expansion end and its matching spanners |
| EP2037130A1 (en) * | 2007-09-12 | 2009-03-18 | Continental Automotive GmbH | Attachment device |
| WO2011042159A2 (en) * | 2009-10-07 | 2011-04-14 | Trw Automotive Electronics & Components Gmbh | Connection assembly and method for removable fastening an attachment part to a carrier |
| CN203297236U (en) * | 2013-06-17 | 2013-11-20 | 金方明 | Toothpaste filling machine cross expansion pin |
| CN107493683A (en) * | 2015-02-13 | 2017-12-19 | 崔维斯·D.·麦克鲁尔 | Hole alignment tools with compliance provincial characteristics |
| EP3144546A1 (en) * | 2015-09-18 | 2017-03-22 | SFS intec Holding AG | Connection device, connection assembly and method for producing a connection device |
| CN208961906U (en) * | 2018-08-21 | 2019-06-11 | 沈阳利源轨道交通装备有限公司 | A kind of elastic cylindrical pin provision for disengagement |
| CN210739063U (en) * | 2019-09-12 | 2020-06-12 | 广州市珠江灯光科技有限公司 | Mounting structure of fixed cover, fixed subassembly and accuse light component |
| CN213839193U (en) * | 2020-12-02 | 2021-07-30 | 深圳市深溢电子科技有限公司 | Expansion positioning pin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115229442A (en) * | 2022-07-28 | 2022-10-25 | 大连日牵电机有限公司 | Combined machining method for frame and planet carrier of mining dump truck |
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