CN204025270U - A kind of dismountable setscrew - Google Patents

A kind of dismountable setscrew Download PDF

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Publication number
CN204025270U
CN204025270U CN201420505206.5U CN201420505206U CN204025270U CN 204025270 U CN204025270 U CN 204025270U CN 201420505206 U CN201420505206 U CN 201420505206U CN 204025270 U CN204025270 U CN 204025270U
Authority
CN
China
Prior art keywords
sleeve
pawl
setscrew
intumescent sheet
bolt
Prior art date
Application number
CN201420505206.5U
Other languages
Chinese (zh)
Inventor
叶锋
田祥圣
周德龙
姜洪兵
Original Assignee
江苏省苏中建设集团股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏省苏中建设集团股份有限公司 filed Critical 江苏省苏中建设集团股份有限公司
Priority to CN201420505206.5U priority Critical patent/CN204025270U/en
Application granted granted Critical
Publication of CN204025270U publication Critical patent/CN204025270U/en

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Abstract

The utility model discloses a kind of dismountable setscrew, comprise bolt, sleeve pipe, compression spring and nut, the upper end of bolt is provided with screw thread, the other end be provided with cone angle upwards dilate head, also comprise the sleeve being arranged on outside sleeve pipe, sleeve coordinates with shell clearance; Sleeve pipe splits into the intumescent sheet with pawl with dilating the one end that is connected of head, and it is corresponding one by one with intumescent sheet that described pawl is arranged on the bottom of intumescent sheet; On sleeve, offer and pawl groove one to one, the bottom of sleeve is blind hole, and the bottom of fluting is greater than the longest edge length of pawl apart from the distance of sleeve bottom.In the time that needs are removed setscrew, only bolt need to be squeezed in sleeve and sleeve taken out together with screw again.

Description

A kind of dismountable setscrew

Technical field

The utility model discloses a kind of screw.Be specifically related to a kind of dismountable setscrew.

Background technique

In existing engineering construction, setscrew is widely used, and is normally made up of sleeve pipe, bolt, pad and nut, is provided with and dilates head in the bottom of bolt, by the rotation of nut, the intumescent sheet of sleeve bottom is expanded to drive with ground or body of wall interlock and fixes.But because intumescent sheet expands rear ground or the body of wall of embedding, after being used to complete, setscrew cannot be removed, nut can only be laid down and bolt is squeezed into ground or body of wall, therefore we need a kind of detachable expansion screw simple in structure.

Model utility content

The utility model provides a kind of detachable expansion screw simple in structure.

In order to achieve the above object, the utility model is by the following technical solutions: it comprises bolt, sleeve pipe, compression spring and nut, and the upper end of bolt is provided with screw thread, the other end be provided with cone angle upwards dilate head, also comprise the sleeve being arranged on outside sleeve pipe, sleeve coordinates with shell clearance; Sleeve pipe splits into the intumescent sheet with pawl with dilating the one end that is connected of head, and it is corresponding one by one with intumescent sheet that described pawl is arranged on the bottom of intumescent sheet; On sleeve, offer and pawl groove one to one, the bottom of sleeve is blind hole, and the bottom of fluting is greater than the longest edge length of pawl apart from the distance of sleeve bottom, and the height of pawl is greater than the gap of sleeve and sleeve pipe.

As a kind of preferred version of said system, setscrew pawl is right-angled triangle, and one of them right angle side is arranged on away from the one end axially vertical with intumescent sheet that dilates head.Intumescent sheet is multiple.Pawl be isosceles right triangle or pawl be wherein one jiao be the right-angled triangle of 30 degree.

The beneficial effects of the utility model are, due to the sleeve being provided with outside sleeve pipe, in the time that needs are removed setscrew, only bolt need to be squeezed in sleeve and setscrew can be removed.

Brief description of the drawings

Fig. 1 is the schematic diagram of the utility model detachable expansion screw.

Fig. 2 is traditional setscrew schematic diagram.

Embodiment

For making the purpose of the present utility model, technological scheme and its effect more cheer and bright, below in conjunction with accompanying drawing, the utility model embodiment is described:

Fig. 1 is the schematic diagram of the utility model detachable expansion screw.It comprises: bolt 1, sleeve pipe 2, compression spring 3 and nut 4, the upper end of bolt 1 is provided with screw thread, the other end be provided with cone angle upwards dilate 11, also comprise the sleeve 5 being arranged on outside sleeve pipe, sleeve 5 and sleeve pipe 2 Spielpassung; Sleeve pipe 2 splits into the intumescent sheet with pawl 21 with dilating 11 one end that are connected, and it is corresponding one by one with intumescent sheet that described pawl 21 is arranged on the bottom of intumescent sheet; On sleeve 5, offer and pawl 21 groove one to one, the bottom of sleeve 5 is blind hole, and the bottom of fluting is greater than the longest edge length of pawl 21 apart from the distance of sleeve bottom, and the height of pawl 21 is greater than the gap of sleeve 5 and sleeve pipe 2.

When use, first sleeve 5 is inserted in the hole of accomplishing fluently, the bolt assembling, sleeve pipe, compression spring and nut are inserted to sleeve, should be by pawl 21 when insertion the fluting along sleeve, rotating nut opens intumescent sheet gradually, pawl embeds ground or body of wall, by the snap-in force of pawl, setscrew is fixed.In the time that needs are removed, first nut and pad are unloaded, then bolt is beaten as sleeve, in this process, under the guiding of fluting bottom, intumescent sheet to be squeezed to sleeve bottom be dismountable sleeve and bolt to the hypotenuse of pawl.

The mode of execution that above embodiment discloses for the utility model, the mode of execution that its content just adopts for the ease of understanding the technical solution of the utility model, not for limiting the utility model.Technician under any the utility model in technical field; do not departing under the prerequisite of the core technology scheme that the utility model discloses; can in the form of implementing and details, make any amendment and variation; but the protection domain that the utility model limits, throws away the scope that must limit with appending claims and is as the criterion.

Claims (4)

1. a dismountable setscrew, comprises bolt, sleeve pipe, compression spring and nut, and the upper end of bolt is provided with screw thread, the other end be provided with cone angle upwards dilate head, it is characterized in that: also comprise the sleeve being arranged on outside sleeve pipe, sleeve coordinates with shell clearance; Sleeve pipe splits into the intumescent sheet with pawl with dilating the one end that is connected of head, and it is corresponding one by one with intumescent sheet that described pawl is arranged on the bottom of intumescent sheet; On sleeve, offer and pawl groove one to one, the bottom of sleeve is blind hole, and the bottom of fluting is greater than the longest edge length of pawl apart from the distance of sleeve bottom, and the height of pawl is greater than the gap of sleeve and sleeve pipe.
2. dismountable setscrew as claimed in claim 1, is characterized in that: setscrew pawl is right-angled triangle, and one of them right angle side is arranged on away from the one end axially vertical with intumescent sheet that dilates head.
3. setscrew as claimed in claim 1 or 2, is characterized in that: described pawl is isosceles right triangle.
4. setscrew as claimed in claim 1 or 2, is characterized in that: described pawl be wherein one jiao be the right-angled triangle of 30 degree.
CN201420505206.5U 2014-09-02 2014-09-02 A kind of dismountable setscrew CN204025270U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420505206.5U CN204025270U (en) 2014-09-02 2014-09-02 A kind of dismountable setscrew

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420505206.5U CN204025270U (en) 2014-09-02 2014-09-02 A kind of dismountable setscrew

Publications (1)

Publication Number Publication Date
CN204025270U true CN204025270U (en) 2014-12-17

Family

ID=52065141

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420505206.5U CN204025270U (en) 2014-09-02 2014-09-02 A kind of dismountable setscrew

Country Status (1)

Country Link
CN (1) CN204025270U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963930A (en) * 2015-07-08 2015-10-07 常州市零伍壹玖电子有限公司 Stainless steel expansion screw for sports device
CN106245804A (en) * 2015-06-10 2016-12-21 上海振纯新型建材有限公司 The heat insulation integrated building of post-modifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106245804A (en) * 2015-06-10 2016-12-21 上海振纯新型建材有限公司 The heat insulation integrated building of post-modifier
CN106245804B (en) * 2015-06-10 2020-12-01 上海振纯新型建材有限公司 Rear structure heat preservation integration building
CN104963930A (en) * 2015-07-08 2015-10-07 常州市零伍壹玖电子有限公司 Stainless steel expansion screw for sports device

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141217

Termination date: 20150902

EXPY Termination of patent right or utility model