CN202926787U - Novel expansion screw - Google Patents
Novel expansion screw Download PDFInfo
- Publication number
- CN202926787U CN202926787U CN 201220633166 CN201220633166U CN202926787U CN 202926787 U CN202926787 U CN 202926787U CN 201220633166 CN201220633166 CN 201220633166 CN 201220633166 U CN201220633166 U CN 201220633166U CN 202926787 U CN202926787 U CN 202926787U
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- Prior art keywords
- sleeve
- screw rod
- over
- diameter
- changes
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- Expired - Fee Related
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Abstract
The utility model discloses a novel expansion screw, which comprises a screw rod and a hollow sleeve with openings at two ends, wherein the screw rod comprises an expansion section, a transition section and a transfer-in sleeve section, the transition section is formed by downwards and integrally extending the lower end of the expansion section, the diameter of the transition section is gradually reduced in the extending direction, the transfer-in sleeve section is formed by downwards and integrally extending the transition section, the diameter of the transfer-in sleeve section is identical to the diameter of the lower end of the expansion section, the inner diameter of the sleeve is matched with the diameter of the transfer-in sleeve section of the screw rod, the transfer-in sleeve section is provided with external screw threads, internal screw threads matched with the external screw threads are arranged in the sleeve, and in addition, the side wall of the sleeve is provided with a plurality of cuts extending in the axial direction of the sleeve at the transfer-in opening part. Therefore, the novel expansion screw has the advantages that the fastening matching of the sleeve and a hole arranged in a bearing surface can be realized and released only through rotating the screw rod, the operation is extremely convenient, the appearance is attractive, the screw can be taken out at any time when being not used, in addition, the screw can be used again after being taken out, the economy is improved, and the use cost is reduced.
Description
Technical field
The utility model relates to a kind of screw, relates in particular to a kind of Novel expansion bolt.
Background technique
Setscrew can be fastened on the little article of load such as protective grating, rain cover, air-conditioning on body of wall, cement flooring equivalent-load face, and due to easy to use, so its application area is very extensive.At present, existing setscrew generally is comprised of screw rod, sleeve and nut, screw rod tail is coniform, and the internal diameter of circular cone is greater than the internal diameter of sleeve, in the time of nut screwing clamping, screw rod outwards moves, by moving axially of screw thread, tapered segment is moved, and then form very large positive pressure at the outer circumferential face of sleeve, the angle of circular cone is very little in addition, thereby make between body of wall, sleeve and circular cone and form friction self-locking, and then reach fixing purpose.Yet, existing this setscrew with the time need to come operating nut by special tool, inconvenient operation, screw rod will have one section protrusion outside, outward appearance is not attractive in appearance yet, and existing setscrew is all disposable, is difficult to after use take out in body of wall, even the operation by complexity has been taken out, also scrapped and to have used again.
The model utility content
For the deficiencies in the prior art, the purpose of this utility model be intended to provide a kind of easy to operate, can reusable Novel expansion bolt.
The utility model adopts following technological scheme for achieving the above object:
A kind of Novel expansion bolt, comprise screw rod and both ends open in logical sleeve, described screw rod comprises expansion arc, changeover portion and changes sleeve sections over to, this changeover portion is extended to form by the downward one in the lower end of expansion arc, the diameter of changeover portion dwindles gradually along bearing of trend, this changes sleeve sections over to and is extended to form by the downward one of changeover portion, changes the diameter of sleeve sections and the equal diameters of changeover portion lower end over to; The diameter that changes sleeve sections over to of the internal diameter of described sleeve and screw rod is suitable, change sleeve sections over to and offer outside thread, be provided with the internal thread that is complementary with this outside thread in sleeve, and the sidewall of sleeve turns the ingress at screw rod and offers a plurality of along the axially extended otch of sleeve.
Wherein, described otch is four, six or eight, is evenly distributed on the sidewall of sleeve.
Wherein, described otch is from the middle part that mouth extends to sleeve that changes over to of sleeve.
Wherein, the upper end of described expansion arc is provided with and is convenient to rotating screw bolt and makes screw rod change the nut of sleeve over to from the mouth that changes over to of sleeve.
Wherein, described expansion arc, change sleeve sections over to and be cylindrical shape, it is round table-like that changeover portion is.
Wherein, described screw rod adopts a kind of material in metal, plastics, nylon to make.
Wherein, described sleeve adopts a kind of material in metal, plastics, nylon to make.
A kind of Novel expansion bolt that the utility model is set forth, its beneficial effect is: the utility model only needs rotating screw bolt can realize and remove the secure fit in the hole on sleeve and supporting plane, it is extremely convenient to operate, appearance looks elegant, can at any time screw be taken out when not using, and also can reuse after taking out, improve Economy, reduce user cost.
Description of drawings
Fig. 1 is the utility model embodiment's configuration diagram.
Description of reference numerals:
10, screw rod; 11, expansion arc; 12, changeover portion; 13, change sleeve sections over to; 14, nut; 20, sleeve; 21, change mouth over to; 22, otch.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.
Please refer to shown in Figure 1ly, it has demonstrated the concrete structure of the utility model preferred embodiment, a kind of Novel expansion bolt, comprise screw rod 10 and both ends open in logical sleeve 20, wherein:
Described screw rod 10 comprises expansion arc 11, changeover portion 12 and offers the externally threaded sleeve sections 13 that changes over to, this changeover portion 12 is extended to form by the downward one in the lower end of expansion arc 11, the diameter of changeover portion 12 dwindles gradually along bearing of trend, this changes sleeve sections 13 over to and is extended to form by the downward one of changeover portion 12, change the diameter of sleeve sections 13 and the equal diameters of changeover portion 12 lower ends over to, this expansion arc 11, change sleeve sections 13 over to and all be cylindrical shape, changeover portion 12 is round table-like, changes the resistance of sleeve 20 over to reduce screw rod 10.
The diameter that changes sleeve sections 13 over to of the internal diameter of described sleeve 20 and screw rod 10 is suitable, and the sidewall of this sleeve 20 offers a plurality ofly along the axially extended otch 22 of sleeve 20 changing mouthful 21 places over to, also is provided with the internal thread that is complementary with above-mentioned outside thread in sleeve 20.
In order to guarantee the tension force of sleeve 20, described otch 22 is four, six or eight, can also be more certainly, and all otch 22 are evenly distributed on the sidewall of sleeve 20, and otch 22 is from the middle part that mouth 21 extends to sleeve 20 that changes over to of sleeve 20.
For the ease of changing screw rod 10 to sleeve 20 over to and take out screw rod 10 from sleeve 20, the upper end of the expansion arc 11 of described screw rod 10 is provided with nut 14, and the shape of nut 14 can be regular polygon, circle or other shape.
during use, sleeve 20 is enclosed within the lower end that screw rod 10 changes sleeve sections 13 over to, sleeve 20 turns right, until sleeve 20 change mouthfuls 21 lower ends that go to screw rod 10 changeover portions 12 over to, pierce into this setscrew the fixed hole for the treatment of fixed object this moment, inside the hole that then that insertion that sleeve 20 is relative with changing mouth 21 over to is accomplished fluently on body of wall equivalent-load face in advance, then utilize hammer or other instrument that sleeve 20 is hammered in the hole, turn right with spanner or other tool operation nut 14 again, existence due to otch 22, the sidewall of sleeve 20 outwards expands along with changing over to of screw rod 10, after the expansion arc 11 of screw rod 10 enters sleeve 20, because the diameter of expansion arc 11 is maximum, it is maximum that the degrees of expansion of sleeve 20 also reaches, at this moment, setscrew is fixed on body of wall firmly, whole operating process is very simple, convenient.And as needing to take out setscrew, available spanner or other instrument are clamped the nut 14 of screw rod 10, the screw rod 10 that turns left makes screw rod 10 withdraw from one section suitable distance, until the expansion arc 11 of screw rod 10 withdraws from from sleeve 20, then strikes nut 14 with hammer or other instrument, sleeve 20 will inwardly shrink, remove its fixing on supporting plane, can easily take out setscrew this moment, and the setscrew after taking out can reuse, thereby improved Economy, reduced user cost.
Be pointed out that, screw rod 10 of the present utility model can be to be made by any material in metal, plastics, nylon or other material, same, sleeve 20 can be also to be made by any material in metal, plastics, nylon or other material, therefore, when using this setscrew, can select according to specific needs screw rod 10 and the sleeve 20 of suitable material, thereby enlarge using scope of the present utility model.
The above, it is only the utility model preferred embodiment, be not that technical scope of the present utility model is imposed any restrictions, therefore every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment does.
Claims (7)
1. Novel expansion bolt, it is characterized in that: comprise screw rod and both ends open in logical sleeve, described screw rod comprises expansion arc, changeover portion and changes sleeve sections over to, this changeover portion is extended to form by the downward one in the lower end of expansion arc, the diameter of changeover portion dwindles gradually along bearing of trend, this changes sleeve sections over to and is extended to form by the downward one of changeover portion, changes the diameter of sleeve sections and the equal diameters of changeover portion lower end over to; The diameter that changes sleeve sections over to of the internal diameter of described sleeve and screw rod is suitable, change sleeve sections over to and offer outside thread, be provided with the internal thread that is complementary with this outside thread in sleeve, and the sidewall of sleeve offers turning the ingress a plurality of along the axially extended otch of sleeve.
2. a kind of Novel expansion bolt according to claim 1, it is characterized in that: described otch is four, six or eight, is evenly distributed on the sidewall of sleeve.
3. a kind of Novel expansion bolt according to claim 1 is characterized in that: described otch is from the middle part that mouth extends to sleeve that changes over to of sleeve.
4. a kind of Novel expansion bolt according to claim 1 is characterized in that: the upper end of described expansion arc is provided with to be convenient to rotating screw bolt and to make screw rod from the nut that mouth changes sleeve over to that changes over to of sleeve.
5. a kind of Novel expansion bolt according to claim 1 is characterized in that: described expansion arc, change sleeve sections over to and be cylindrical shape, it is round table-like that changeover portion is.
6. a kind of Novel expansion bolt according to claim 1 is characterized in that: described screw rod adopts a kind of material in metal, plastics, nylon to make.
7. a kind of Novel expansion bolt according to claim 1 is characterized in that: described sleeve adopts a kind of material in metal, plastics, nylon to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633166 CN202926787U (en) | 2012-11-26 | 2012-11-26 | Novel expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633166 CN202926787U (en) | 2012-11-26 | 2012-11-26 | Novel expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926787U true CN202926787U (en) | 2013-05-08 |
Family
ID=48216751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220633166 Expired - Fee Related CN202926787U (en) | 2012-11-26 | 2012-11-26 | Novel expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870902A (en) * | 2015-12-10 | 2017-06-20 | 汉殷Enc株式会社 | Rotary mounting bracket |
-
2012
- 2012-11-26 CN CN 201220633166 patent/CN202926787U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870902A (en) * | 2015-12-10 | 2017-06-20 | 汉殷Enc株式会社 | Rotary mounting bracket |
| CN106870902B (en) * | 2015-12-10 | 2019-03-29 | 汉殷Enc株式会社 | Rotary mounting bracket |
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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 |
Granted publication date: 20130508 Termination date: 20141126 |
|
| EXPY | Termination of patent right or utility model |