CN203730492U - Self-locking expansion bolt - Google Patents
Self-locking expansion bolt Download PDFInfo
- Publication number
- CN203730492U CN203730492U CN201420112413.4U CN201420112413U CN203730492U CN 203730492 U CN203730492 U CN 203730492U CN 201420112413 U CN201420112413 U CN 201420112413U CN 203730492 U CN203730492 U CN 203730492U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- expansion
- locking
- bolt
- adapter sleeve
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a self-locking expansion bolt. The self-locking expansion bolt comprises a bolt body. The bolt body comprises a bolt head and a screw. A fixing sleeve sleeves the screw and is in threaded connection with the screw. An anti-skid portion is arranged on the outer wall of the fixing sleeve. A locking sleeve is arranged at one end opposite to the bolt head of the fixing sleeve and comprises a plurality of uniformly and circumferentially distributed elastic pieces. An expansion sleeve is arranged at the other end opposite to the bolt head of the fixing sleeve. The inner wall of the expansion sleeve is of a taper form, and the outer lateral wall of the expansion sleeve aligns to the outer lateral wall of the fixing sleeve. A plurality of separating grooves are circumferentially formed in the expansion sleeve, and accordingly the whole expansion sleeve is of a petal form. The fixing sleeve is inserted in a connection hole, the expansion sleeve is arranged on one side of the connecting hole, and the locking sleeve is arranged on the other side of the connecting hole. The bolt body is screwed in the fixing sleeve, and the petaloid expansion sleeve is compressed by the end portion of the screw and expands to be clamped with the end surface of one side of the connecting hole. The bolt head is clamped with the other side of the connecting hole and compresses the locking sleeve, so that the bolt is connected and fastened with the screw thread of the fixing sleeve through elastic force provided by the elastic pieces of the locking sleeve.
Description
Technical field
The utility model relates to a kind of bolt, and more particularly, it relates to a kind of self-locking anti-loosing EXPANSION ANCHOR BOLTS.
Background technique
Bolt is by head and screw rod (with an externally threaded cylindrical body) class fastening piece dimerous.
Bolt in the market, need to be used in conjunction with nut, fastening two parts with through hole of ability, in use in the side inserting bolt that the attachment hole forming is coaxially set by two through holes, opposite side at attachment hole screws in nut, fitting operation is comparatively loaded down with trivial details, joint efficiency is low, and must there be enough installing spaces the both sides of attachment hole, when attachment hole one side installing space is when too small, the process that screws in nut will extremely bother, even cannot install, even if connect reluctantly, due to installing space restriction, bolt is connected fastening not, easily loosening in vibrations.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of self-locking anti-loosing EXPANSION ANCHOR BOLTS, and fitting operation is convenient and can solve connection trouble and the easy loosening problem causing because attachment hole one side installing space is too small.
For achieving the above object, the utility model provides following technological scheme: a kind of self-locking anti-loosing EXPANSION ANCHOR BOLTS, comprise bolt body, described bolt body comprises bolt head and screw rod, described screw sleeve is provided with adapter sleeve, described adapter sleeve is connected with screw flight, the outer wall of described adapter sleeve is provided with anti-skidding portion, one end of the relative bolt head of described adapter sleeve is provided with loose-proof sleeve, described loose-proof sleeve comprises some circumferential equally distributed shell fragments that are, the other end of the relative bolt head of described adapter sleeve is provided with expansion sleeve, the inwall of described expansion sleeve is tapered, its outer side wall flushes with the outer side wall of adapter sleeve, described expansion sleeve makes expansion sleeve integral body be flap along being circumferentially with several separating grooves.
By adopting technique scheme, when connecting two objects with through hole, adapter sleeve is filled in the attachment hole of two through holes formations, adapter sleeve keeps relative static by the anti-skidding portion of its outer wall with attachment hole, expansion sleeve penetrates attachment hole and is placed in attachment hole one side, loose-proof sleeve is placed in the opposite side of attachment hole, now bolt body is screwed in adapter sleeve, under screw thread transmission, the end extruding of screw rod is the expansion sleeve of flap, expansion sleeve is expanded to launch, block a side end face of attachment hole, bolt head blocks the opposite side of attachment hole, realize and connecting, because whole connection procedure all only completes in a side of attachment hole, efficiently solve the problem of installing space restriction, make to install the simple and fast that becomes, and loose-proof sleeve is pushed by bolt head, its shell fragment provides elastic force, make bolt fastening with being threaded of adapter sleeve, prevent bolt looseness, be connected firmly.
The utility model is further set to: described anti-skidding portion is set to some the ribs that are convexly set in adapter sleeve outer surface, and described some ribs all axially arrange along adapter sleeve.
By adopting technique scheme, adapter sleeve, by some ribs and the clamping of attachment hole phase, keeps adapter sleeve circumferentially relative fixing with attachment hole, prevents when bolt body screws in, and because adapter sleeve rotates, causes expansion sleeve to launch, and makes to install inconvenient problem.
The utility model is further set to: the end face of relative screw rod one side of described bolt head is conical surface setting.
By adopting technique scheme, when bolt body screws in, the end face extruding loose-proof sleeve of bolt head to screw rod one side, make each shell fragment generation deformation that elastic fastening power is provided, prevent that bolt body is loosening, this end face is set to the conical surface, makes each shell fragment all be subject to the conical surface to push Bending Deformation laterally, rule deformation, makes loose-proof sleeve be expansion shape.
The utility model is further set to: on the described conical surface, edge is circumferentially with several locking latches.
By adopting technique scheme, all gapped between the adjacent shell fragment of the loose-proof sleeve after expansion, after locking latch is set, locking latch clamping enters in each gap, prevents in vibrations the counterrotating that bolt body may exist, cause the loosening problem of bolt body, anti-loosing effect is better.
The utility model is further set to: described locking latch is set to unidirectional tooth.
By adopting technique scheme, when mounted, bolt body turns clockwise, the locking latch that is unidirectional tooth setting can successfully push crosses each shell fragment, and can be not stuck with loose-proof sleeve, and when counterrotating, the gap clamping and between adjacent shell fragment, guarantees to install smoothly and play locking effect.
Accompanying drawing explanation
Fig. 1 is the utility model self-locking anti-loosing EXPANSION ANCHOR BOLTS embodiment's structural representation;
Fig. 2 is the utility model self-locking anti-loosing EXPANSION ANCHOR BOLTS embodiment's erection drawing.
Description of reference numerals: 1, bolt body; 11, bolt head; 12, screw rod; 2, adapter sleeve; 21, anti-skidding portion; 3, loose-proof sleeve; 31, shell fragment; 4, expansion sleeve; 41, separating groove; 5, locking latch.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model self-locking anti-loosing EXPANSION ANCHOR BOLTS embodiment is described further.
A kind of self-locking anti-loosing EXPANSION ANCHOR BOLTS, comprise bolt body 1, described bolt body 1 comprises bolt head 11 and screw rod 12, described screw rod 12 is arranged with adapter sleeve 2, described adapter sleeve 2 is threaded with screw rod 12, the outer wall of described adapter sleeve 2 is provided with anti-skidding portion 21, one end of described adapter sleeve 2 relative bolt heads 11 is provided with loose-proof sleeve 3, described loose-proof sleeve 3 comprises some circumferential equally distributed shell fragments 31 that are, the other end of described adapter sleeve 2 relative bolt heads 11 is provided with expansion sleeve 4, the inwall of described expansion sleeve 4 is tapered, its outer side wall flushes with the outer side wall of adapter sleeve 2, described expansion sleeve 4 makes expansion sleeve 4 integral body be flap along being circumferentially with several separating grooves 41.
By adopting technique scheme, when connecting two objects with through hole, adapter sleeve 2 is filled in the attachment hole of two through holes formations, adapter sleeve 2 keeps relative static by the anti-skidding portion 21 of its outer wall with attachment hole, expansion sleeve 4 penetrates attachment hole and is placed in attachment hole one side, loose-proof sleeve 3 is placed in the opposite side of attachment hole, now bolt body 1 is screwed in adapter sleeve 2, under screw thread transmission, the end extruding of screw rod 12 is the expansion sleeve 4 of flap, expansion sleeve 4 is expanded to launch, block a side end face of attachment hole, bolt head 11 blocks the opposite side of attachment hole, realize and connecting, because whole connection procedure all only completes in a side of attachment hole, efficiently solve the problem of installing space restriction, make to install the simple and fast that becomes, and loose-proof sleeve 3 is subject to bolt head 11 extruding, its shell fragment 31 provides elastic force, make bolt fastening with being threaded of adapter sleeve 2, prevent bolt looseness, be connected firmly.
Described anti-skidding portion 21 is set to some the ribs that are convexly set in adapter sleeve 2 outer surfaces, and described some ribs all axially arrange along adapter sleeve 2.
By adopting technique scheme, adapter sleeve 2, by some ribs and the clamping of attachment hole phase, keeps adapter sleeve 2 circumferentially relative fixing with attachment hole, prevents when bolt body 1 screws in, because adapter sleeve 2 rotates, cause expansion sleeve 4 to launch, make to install inconvenient problem.
The end face of described bolt head 11 relative screw rod 12 1 sides is conical surface setting.
By adopting technique scheme, when bolt body 1 screws in, the end face extruding loose-proof sleeve 3 of 11 pairs of screw rod 12 1 sides of bolt head, make each shell fragment 31 that deformation occur elastic fastening power is provided, prevent that bolt body 1 is loosening, this end face is set to the conical surface, makes each shell fragment 31 all be subject to the conical surface to push Bending Deformation laterally, rule deformation, makes loose-proof sleeve 3 be expansion shape.
On the described conical surface, edge is circumferentially with several locking latches 5.
By adopting technique scheme, all gapped between the adjacent shell fragment 31 of the loose-proof sleeve 3 after expansion, after locking latch 5 is set, locking latch 5 clampings enter in each gap, prevent in vibrations, the counterrotating that bolt body 1 may exist, causes the loosening problem of bolt body 1, and anti-loosing effect is better.
Described locking latch 5 is set to unidirectional tooth.
By adopting technique scheme, when mounted, bolt body 1 turns clockwise, the locking latch 5 that is unidirectional tooth setting can successfully push crosses each shell fragment 31, and can be not stuck with loose-proof sleeve 3, and when counterrotating, and the gap clamping of 31, adjacent shell fragment, guarantee to install smoothly and play locking effect.
Claims (5)
1. a self-locking anti-loosing EXPANSION ANCHOR BOLTS, comprise bolt body, described bolt body comprises bolt head and screw rod, it is characterized in that: described screw sleeve is provided with adapter sleeve, described adapter sleeve is connected with screw flight, the outer wall of described adapter sleeve is provided with anti-skidding portion, one end of the relative bolt head of described adapter sleeve is provided with loose-proof sleeve, described loose-proof sleeve comprises some circumferential equally distributed shell fragments that are, the other end of the relative bolt head of described adapter sleeve is provided with expansion sleeve, the inwall of described expansion sleeve is tapered, its outer side wall flushes with the outer side wall of adapter sleeve, described expansion sleeve makes expansion sleeve integral body be flap along being circumferentially with several separating grooves.
2. self-locking anti-loosing EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that: described anti-skidding portion is set to some the ribs that are convexly set in adapter sleeve outer surface, and described some ribs all axially arrange along adapter sleeve.
3. self-locking anti-loosing EXPANSION ANCHOR BOLTS according to claim 1 and 2, is characterized in that: the end face of relative screw rod one side of described bolt head is conical surface setting.
4. self-locking anti-loosing EXPANSION ANCHOR BOLTS according to claim 3, is characterized in that: on the described conical surface, edge is circumferentially with several locking latches.
5. self-locking anti-loosing EXPANSION ANCHOR BOLTS according to claim 4, is characterized in that: described locking latch is set to unidirectional tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112413.4U CN203730492U (en) | 2014-03-13 | 2014-03-13 | Self-locking expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112413.4U CN203730492U (en) | 2014-03-13 | 2014-03-13 | Self-locking expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730492U true CN203730492U (en) | 2014-07-23 |
Family
ID=51200570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112413.4U Expired - Fee Related CN203730492U (en) | 2014-03-13 | 2014-03-13 | Self-locking expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730492U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864255A (en) * | 2016-06-14 | 2016-08-17 | 江苏永昊高强度螺栓有限公司 | Anchor bolt |
| CN106013136A (en) * | 2016-07-07 | 2016-10-12 | 无锡帝安福科技有限公司 | Fabricated foundation pile |
| CN106438626A (en) * | 2016-09-01 | 2017-02-22 | 宁波群力紧固件制造有限公司 | Reusable expansion bolt and manufacturing method thereof |
| CN106438653A (en) * | 2016-12-02 | 2017-02-22 | 江西洪都航空工业集团有限责任公司 | Bolt anti-disengaging device |
| CN106523507A (en) * | 2016-12-02 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Bolt locking device |
| CN108006036A (en) * | 2017-11-29 | 2018-05-08 | 嘉业卓众建设有限公司 | Build expansion anchor |
| CN110984755A (en) * | 2019-12-23 | 2020-04-10 | 上海电信工程有限公司 | Manhole key |
| CN111058689A (en) * | 2019-12-31 | 2020-04-24 | 刘毅 | Positioning, mounting and connecting structure of handle |
| CN111207139A (en) * | 2020-04-01 | 2020-05-29 | 马娜 | Retaining high-expansion bolt |
| CN112145537A (en) * | 2020-09-30 | 2020-12-29 | 黄淼鑫 | Self-locking bolt with anti-loosening function |
| CN113202654A (en) * | 2021-05-18 | 2021-08-03 | 大昌汽车部件(苏州)有限公司 | Combined engine piston and forging process thereof |
| CN113803346A (en) * | 2021-09-29 | 2021-12-17 | 航天精工股份有限公司 | Detachable anti-disassembly nut assembly |
| CN114412900A (en) * | 2021-12-16 | 2022-04-29 | 中国建筑第五工程局有限公司 | Detachable expansion bolt |
-
2014
- 2014-03-13 CN CN201420112413.4U patent/CN203730492U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864255A (en) * | 2016-06-14 | 2016-08-17 | 江苏永昊高强度螺栓有限公司 | Anchor bolt |
| CN106013136A (en) * | 2016-07-07 | 2016-10-12 | 无锡帝安福科技有限公司 | Fabricated foundation pile |
| CN106438626B (en) * | 2016-09-01 | 2019-03-26 | 宁波群力紧固件制造有限公司 | A kind of reusable expansion bolt and preparation method thereof |
| CN106438626A (en) * | 2016-09-01 | 2017-02-22 | 宁波群力紧固件制造有限公司 | Reusable expansion bolt and manufacturing method thereof |
| CN106438653A (en) * | 2016-12-02 | 2017-02-22 | 江西洪都航空工业集团有限责任公司 | Bolt anti-disengaging device |
| CN106523507A (en) * | 2016-12-02 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Bolt locking device |
| CN108006036A (en) * | 2017-11-29 | 2018-05-08 | 嘉业卓众建设有限公司 | Build expansion anchor |
| CN110984755A (en) * | 2019-12-23 | 2020-04-10 | 上海电信工程有限公司 | Manhole key |
| CN111058689A (en) * | 2019-12-31 | 2020-04-24 | 刘毅 | Positioning, mounting and connecting structure of handle |
| CN111207139A (en) * | 2020-04-01 | 2020-05-29 | 马娜 | Retaining high-expansion bolt |
| CN112145537A (en) * | 2020-09-30 | 2020-12-29 | 黄淼鑫 | Self-locking bolt with anti-loosening function |
| CN113202654A (en) * | 2021-05-18 | 2021-08-03 | 大昌汽车部件(苏州)有限公司 | Combined engine piston and forging process thereof |
| CN113803346A (en) * | 2021-09-29 | 2021-12-17 | 航天精工股份有限公司 | Detachable anti-disassembly nut assembly |
| WO2023050604A1 (en) * | 2021-09-29 | 2023-04-06 | 航天精工股份有限公司 | Detachable anti-disassembly nut assembly |
| CN114412900A (en) * | 2021-12-16 | 2022-04-29 | 中国建筑第五工程局有限公司 | Detachable expansion bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20180313 |