CN104806648A - Novel expansion pin - Google Patents
Novel expansion pin Download PDFInfo
- Publication number
- CN104806648A CN104806648A CN201510208712.7A CN201510208712A CN104806648A CN 104806648 A CN104806648 A CN 104806648A CN 201510208712 A CN201510208712 A CN 201510208712A CN 104806648 A CN104806648 A CN 104806648A
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- China
- Prior art keywords
- block
- expansion pin
- locking screw
- epicone
- conical block
- Prior art date
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Abstract
The invention discloses a novel expansion pin which comprises an outer casing, a locking screw, a cushion block, an upper conical block and a lower conical block, wherein an inner hole of the outer casing comprises two sections of conical holes of which small ends are connected; threaded holes corresponding to the locking screw are formed in the upper conical block and the lower conical block; the upper conical block and the lower conical block are correspondingly positioned at the head end and the tail end of the inner hole of the outer casing and are matched with the conical holes; the cushion block is arranged on the outer side of the upper conical block; the tail end of the locking screw is connected with the lower conical block; the head end of the locking screw penetrates through the upper conical block and the cushion block, is arranged outside the expansion pin and is fixed with the cushion block by a locking nut. According to the novel expansion pin disclosed by the invention, by the matching of the locking screw at the central position of the expansion pin, the upper conical block and the lower conical block, an expansion pin structure is in clearance fit with a pin hole under an initial state; after screwing, the clearance fit between the expansion pin and the pin hole is changed into interference fit, and the seamless connection between two parts to be connected can be conveniently realized, so that transmitting motion between the two connected parts can be reliably, accurately and effectively realized.
Description
Technical field
The present invention relates to a kind of expansion pin, particularly relate to a kind of novel pin that can realize seamless link between two driving parts.
Background technique
At present, that commonly uses comprises bolt connection, interference connection and pin connection etc. with the linkage structure realizing power transmission between two parts.Connect for bolt, Assembly And Disassembly is comparatively loaded down with trivial details, and the size of transmitting torque is relatively limited; Connect for interference, it can bear larger load, but this linkage structure exists assembling and dismantles comparatively loaded down with trivial details problem, greatly reduces working efficiency; Connect for common pin, when transmitting shearing force, owing to usually there is gap between pin and hole, therefore, it is steady not and accurate that it transmits motion, and may there is shock during to-and-fro motion.
Summary of the invention
Object of the present invention is just to provide a kind of novel pin that can switch between Spielpassung and interference fit to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of novel expansion pin, comprise shell, locking screw, cushion block, epicone block and lower cone block, the endoporus of described shell comprises the connected conical bore of two sections of small ends, the two ends of described locking screw are provided with outside thread, the middle part of described locking screw is provided with ledge structure, the tapped hole corresponding with described locking screw is provided with in described epicone block and described lower cone block, described lower cone block lays respectively at the head end of described shell endoporus and tail end and coordinates with this conical bore, described cushion block is arranged on the outside of described epicone block, the tail end of described locking screw is connected with described lower cone block, the head end of described locking screw is arranged on described expansion pin outside through described epicone block and described cushion block, and fixed by locking nut and described cushion block.
Further, described expansion pin also comprises the first circlip and the second circlip, described epicone block is fixed on the head end of described shell endoporus by described first circlip and carries out axial limiting, and described lower cone block is fixed on the tail end of described shell endoporus by described second circlip and carries out axial limiting.
Preferably, described locking nut is double nuts structure, then can realize the function applying pretightening force and loosen simultaneously.
Particularly, the diameter in the middle part of described shell endoporus is less than the diameter at its two ends.
Particularly, the diameter of the through hole on described epicone block and described cushion block is greater than the diameter of described locking screw.
Internal thread is not provided with in the through hole of i.e. described epicone block and described cushion block.
For the ease of the dismounting of above-mentioned novel expansion pin, the invention provides a kind of extracting tool of novel expansion pin, comprise ejection tool and socket head screw, the head end end contact of described ejection tool and described shell, described socket head screw is connected with described epicone block through the through hole on described ejection tool.
Beneficial effect of the present invention is:
A kind of novel expansion pin of the present invention is by the lock screw of expansion pin central position, the cooperation between epicone block and lower cone block, making expansion pin structure in an initial condition and between pin hole is Spielpassung, after tightening, interference fit is become by Spielpassung between expansion pin and pin hole, conveniently can realize the seamless link between the required part connected, make can carry out between two connected pieces reliably, accurately, effectively transmitting motion.
Accompanying drawing explanation
Fig. 1 is the plan view of a kind of novel expansion pin of the present invention;
Fig. 2 is the plan view of the extracting tool of a kind of novel expansion pin of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of novel expansion pin of the present invention, comprise shell 6, locking screw 1, cushion block 3, epicone block 5, lower cone block 7, first circlip 4 and the second circlip 8, the endoporus of shell 6 comprises the connected conical bore of two sections of small ends, diameter in the middle part of shell 6 endoporus is less than the diameter at its two ends, the two ends of locking screw 1 are provided with outside thread, the middle part of locking screw 1 is provided with ledge structure, the tapped hole corresponding with locking screw 1 is provided with in lower cone block 7, epicone block 5 is fixed on the head end of shell 6 endoporus by the first circlip 4 and carries out axial limiting, lower cone block 7 is fixed on the tail end of shell 6 endoporus by the second circlip 8 and carries out axial limiting, cushion block 3 is arranged on the outside of epicone block 5, the tail end of locking screw 1 is connected with lower cone block 7, the head end of locking screw 1 is arranged on expansion pin outside through epicone block 5 and cushion block 3, and fixed by locking nut 2 and cushion block 3, the diameter of the through hole on epicone block 5 and cushion block 3 is greater than the diameter of locking screw 1, locking nut 2 is double nuts structure.
As shown in Figure 2, a kind of extracting tool of novel expansion pin, comprises ejection tool 9 and socket head screw 10, the head end end contact of ejection tool 9 and shell 6, and socket head screw 10 is connected with epicone block 5 through the through hole on ejection tool 9.
The working principle of a kind of novel expansion pin of the present invention is as follows:
When needs connect, expansion pin is inserted in expansion pin hole, twist locking jack panel clockwise again, pretightening force is applied between epicone block 5 and lower cone block 7, epicone block 5 and lower cone block 7 are all moved to the endoporus middle-end of shell 6, thus make shell 6 outwards elastic expansion, become interference fit by Spielpassung between expansion pin and pin-and-hole, to realize the accurate transmission between two connected pieces.
When needs are dismantled, unclamp and exit locking nut 2, be rotated counterclockwise locking screw 1, ledge structure in the middle part of locking screw 1 contacts with epicone block 5, and apply rightabout active force between epicone block 5 and lower cone block 7, epicone block 5 and lower cone block 7 are moved respectively to the two ends of shell 6 endoporus, thus make epicone block 5, depart between lower cone block 7 and shell 6, the elastic expansion of shell 6 is made to return to original state, thus make to become Spielpassung by interference fit between expansion pin and pin-and-hole, realize the dismounting of expansion pin.
In addition, if lower cone block 7 does not depart from shell 6, then first cushion block 3, first circlip 4 and epicone block 5 are taken out successively, knock lower cone block 7 vertically, then lower cone block 7 can be made to depart from shell 66.
If epicone block 5 does not depart from shell 6, then need the extracting tool using expansion pin, its principle is as follows:
Locking nut 2, cushion block 3 and the first circlip 4 are taken out successively, and ejection tool 9 is arranged on the head end of shell 6 by socket head screw 10, turn clockwise socket head screw 10, throws off, thus take out expansion pin smoothly by between epicone block 5 and shell 6.
Technological scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, the technology distortion that every technological scheme according to the present invention is made, and all falls within protection scope of the present invention.
Claims (6)
1. a novel expansion pin, it is characterized in that: comprise shell, locking screw, cushion block, epicone block and lower cone block, the endoporus of described shell comprises the connected conical bore of two sections of small ends, the two ends of described locking screw are provided with outside thread, the middle part of described locking screw is provided with ledge structure, the tapped hole corresponding with described locking screw is provided with in described lower cone block, described epicone block and described lower cone block lay respectively at the head end of described shell endoporus and tail end and coordinate with this conical bore, described cushion block is arranged on the outside of described epicone block, the tail end of described locking screw is connected with described lower cone block, it is outside that the head end of described locking screw is arranged on described expansion pin through the through hole of described epicone block and described cushion block, and fixed by locking nut and described cushion block.
2. the novel expansion pin of one according to claim 1, it is characterized in that: also comprise the first circlip and the second circlip, described epicone block is fixed on the head end of described shell endoporus by described first circlip and carries out axial limiting, and described lower cone block is fixed on the tail end of described shell endoporus by described second circlip and carries out axial limiting.
3. the novel expansion pin of one according to claim 1, is characterized in that: described locking nut is double nuts structure.
4. the novel expansion pin of one according to claim 1, is characterized in that: the diameter in the middle part of described shell endoporus is less than the diameter at its two ends.
5. the novel expansion pin of one according to claim 1, is characterized in that: the diameter of the through hole on described epicone block and described cushion block is greater than the diameter of described locking screw.
6. an extracting tool for novel expansion pin, is characterized in that: comprise ejection tool and socket head screw, the head end end contact of described ejection tool and described shell, and described socket head screw is connected with described epicone block through the through hole on described ejection tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208712.7A CN104806648A (en) | 2015-04-28 | 2015-04-28 | Novel expansion pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208712.7A CN104806648A (en) | 2015-04-28 | 2015-04-28 | Novel expansion pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806648A true CN104806648A (en) | 2015-07-29 |
Family
ID=53691757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510208712.7A Pending CN104806648A (en) | 2015-04-28 | 2015-04-28 | Novel expansion pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087397A (en) * | 2017-12-06 | 2018-05-29 | 昆山恩都照明有限公司 | Metal plate connection structure |
| CN109210060A (en) * | 2018-09-12 | 2019-01-15 | 福建龙溪轴承(集团)股份有限公司 | A kind of elastic collar structure and a kind of inner-outer sleeve disassembly and assembly structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB490718A (en) * | 1935-01-25 | 1938-08-19 | Hans Hoffmann | Improvements in pivots for the connection of relatively movable parts |
| KR20030005830A (en) * | 2001-07-10 | 2003-01-23 | 현대자동차주식회사 | A pin capable of controlling diameter |
| US6582172B2 (en) * | 2001-08-29 | 2003-06-24 | The United States Of America As Represented By The Secretary Of The Navy | Isolated mechanical fastening system |
| CN2587968Y (en) * | 2002-11-18 | 2003-11-26 | 薛征宇 | Direct inserting type expansion joint pin for butt joint truss |
| CN2633524Y (en) * | 2003-07-11 | 2004-08-18 | 黄智勋 | Positioning pin detaching device for circuit board drilling machine |
| US20060120823A1 (en) * | 2001-09-25 | 2006-06-08 | Petrok Christopher J | Quick assembly fastening system for plastic parts |
| CN203770337U (en) * | 2013-12-31 | 2014-08-13 | 安徽红星阀门有限公司 | Pin structure |
| CN204828335U (en) * | 2015-04-28 | 2015-12-02 | 中国工程物理研究院总体工程研究所 | Novel bloated round pin and extracting tool thereof |
-
2015
- 2015-04-28 CN CN201510208712.7A patent/CN104806648A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB490718A (en) * | 1935-01-25 | 1938-08-19 | Hans Hoffmann | Improvements in pivots for the connection of relatively movable parts |
| KR20030005830A (en) * | 2001-07-10 | 2003-01-23 | 현대자동차주식회사 | A pin capable of controlling diameter |
| US6582172B2 (en) * | 2001-08-29 | 2003-06-24 | The United States Of America As Represented By The Secretary Of The Navy | Isolated mechanical fastening system |
| US20060120823A1 (en) * | 2001-09-25 | 2006-06-08 | Petrok Christopher J | Quick assembly fastening system for plastic parts |
| CN2587968Y (en) * | 2002-11-18 | 2003-11-26 | 薛征宇 | Direct inserting type expansion joint pin for butt joint truss |
| CN2633524Y (en) * | 2003-07-11 | 2004-08-18 | 黄智勋 | Positioning pin detaching device for circuit board drilling machine |
| CN203770337U (en) * | 2013-12-31 | 2014-08-13 | 安徽红星阀门有限公司 | Pin structure |
| CN204828335U (en) * | 2015-04-28 | 2015-12-02 | 中国工程物理研究院总体工程研究所 | Novel bloated round pin and extracting tool thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087397A (en) * | 2017-12-06 | 2018-05-29 | 昆山恩都照明有限公司 | Metal plate connection structure |
| CN109210060A (en) * | 2018-09-12 | 2019-01-15 | 福建龙溪轴承(集团)股份有限公司 | A kind of elastic collar structure and a kind of inner-outer sleeve disassembly and assembly structure |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |