CN204591908U - Easily detachable expansion bolt - Google Patents
Easily detachable expansion bolt Download PDFInfo
- Publication number
- CN204591908U CN204591908U CN201520069414.XU CN201520069414U CN204591908U CN 204591908 U CN204591908 U CN 204591908U CN 201520069414 U CN201520069414 U CN 201520069414U CN 204591908 U CN204591908 U CN 204591908U
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- Prior art keywords
- bolt
- expansion sleeve
- expansion
- thread portion
- plus thread
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Abstract
The utility model provides a kind of easily detachable expansion bolt, belongs to bolt and manufactures field.It comprises bolt, the first nut, clamping termination and expansion sleeve, and the one end in bolt plus thread portion away from screw part is axially arranged with along bolt the projection that has clamp face, and described projection and plus thread portion are connected as a single entity; The one end closing on plus thread portion at expansion sleeve is provided with clamping termination along expansion sleeve direction and described clamping termination and expansion sleeve are connected as a single entity; Gap is provided with between described expansion sleeve and bolt.By spanner fixed clamp termination during dismounting, screw projection clockwise, bolt and expansion sleeve is made to produce relative movement, thus EXPANSION ANCHOR BOLTS is separated with body of wall, it is high that the utility model has removal efficiency, and noiseless advantage during dismounting, can not damage EXPANSION ANCHOR BOLTS and body of wall in unloading process, improve the working life of EXPANSION ANCHOR BOLTS, reduce the labor intensity of workmen simultaneously.
Description
Technical field
The utility model relates to bolt and manufactures field, especially relates to a kind of easily detachable expansion bolt.
Background technique
EXPANSION ANCHOR BOLTS the assembling sets such as support, suspension bracket, bracket or equipment is fixed on a kind of special thread link that the bodies of wall such as wall, floor, post use.In prior art, EXPANSION ANCHOR BOLTS generally includes expansion sleeve, bolts and nuts, and one end external diameter of bolt is comparatively large, and the other end offers screw thread, and nut driving is on bolt.Expansion sleeve is sheathed on bolt from the screwed one end of bolt, and expansion sleeve closes on the larger one end of bolt external diameter and has the strip gab arranged along bolt longitudinal axis.During installation, use electric impact drill on body of wall, get out the hole suitable with EXPANSION ANCHOR BOLTS size, then by EXPANSION ANCHOR BOLTS load hole, tightening nut can make bolt, nut, expansion sleeve, between assembling set with body of wall swelling become to be integrated.But, due to expansion sleeve be subject to the extrusion-deformation of bolt after cannot recover voluntarily, install after EXPANSION ANCHOR BOLTS be difficult to pull out, even can damage body of wall.
Number of patent application 201320277974.5 discloses a kind of easily detachable expansion bolt, employing pressure ring designs, expansion sleeve is provided with the first groove and the second groove, by pressure ring from the first groove to the transition of the second groove, play the effect of dismounting EXPANSION ANCHOR BOLTS, but this product is in the process of dismounting EXPANSION ANCHOR BOLTS, need to use hammer bolt, removal efficiency is low, noise is large, and easily cause the damage of bolt to be out of shape, EXPANSION ANCHOR BOLTS recycling effect after dismounting is bad, more serious, during dismounting, EXPANSION ANCHOR BOLTS is embedded in body of wall and cannot extracts, great inconvenience is brought to construction.
Model utility content
The utility model is exactly to solve the above-mentioned problems in the prior art, a kind of easily detachable expansion bolt is provided, it is high that it has removal efficiency, noiseless feature during dismounting, EXPANSION ANCHOR BOLTS and body of wall can not be damaged in unloading process, improve the working life of EXPANSION ANCHOR BOLTS, reduce the labor intensity of workmen simultaneously.
For achieving the above object, technical solution adopted in the utility model is:
A kind of easily detachable expansion bolt, comprise bolt, first nut and expansion sleeve, described bolt comprises the nail head connected successively, screw part and plus thread portion, the external diameter of described nail head is greater than described screw part external diameter, described screw part and described nail head smooth connection, described expansion sleeve is sheathed on described bolt from the plus thread portion end of described bolt, one end that described expansion sleeve closes on described nail head offer multiple along bolt axis to strip gab, described first nut driving is in described plus thread portion, described plus thread portion is axially arranged with along bolt the projection that has clamp face away from one end of screw part, and described projection is connected as a single entity with plus thread portion and has identical shaft axis, the external diameter of described projection is no more than the external diameter in described plus thread portion, one end that described expansion sleeve closes on plus thread portion is provided with clamping termination and described clamping termination and expansion sleeve are connected as a single entity, and described screw part outer wall is provided with left-hand thread, and described expansion sleeve is threaded with screw part.
The external diameter of described expansion sleeve is less than the external diameter of described clamping termination, on described bolt between the first nut and expansion sleeve, spring washer and plain washer is arranged with successively from plus thread portion, described expansion sleeve is arranged with dismounting packing ring between bare terminal end head and expansion sleeve tail end opening, described projection has at least one pair of clamp face, and described expansion sleeve adopts spring steel material to make.
Compared to existing technology, the beneficial effects of the utility model are:
1. this device is by screwing the cooperation between the projection of bolt end and clamping termination, and the left handed screw that expansion sleeve inwall matches with screw part outer wall, bolt and expansion sleeve is made to produce relative movement, EXPANSION ANCHOR BOLTS is separated with body of wall, and dismounting is rapidly simple, improves working efficiency, reduce labor intensity, and owing to adopting the method screwed, need not knock in unloading process, avoid the generation of noise.
2. the utility model adopts screwing method dismounting EXPANSION ANCHOR BOLTS, avoids hammering dismounting to the damage of bolt and screw problem on deformation, significantly improves the working life of EXPANSION ANCHOR BOLTS.
3. the projection of bolt end is provided with clamp face, when screwing, extracting tool can be clipped on protruding clamp face, time saving and energy saving, can prevent again the landing of extracting tool.
4. expansion sleeve of the present utility model adopts and can quickly recover to original shape spring steel material making, guarantees the fast quick-recovery of expansion sleeve, ensures the effect of dismounting, improve working efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the present utility model;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is a kind of left side view (regular hexagon end face) of the utility model protrusions;
Fig. 4 is the another kind of left side view (regular hexagon end face) of the utility model protrusions;
Fig. 5 is the structural representation of second embodiment of the present utility model;
Fig. 6 is the sectional view of Fig. 5;
Fig. 7 is the left side view of Fig. 5.
In figure, 1 is protruding, 2 clamping terminations, 3 first nuts, 4 bolts, 4a plus thread portion, 4b screw part, 4c nail head, 5 dismounting packing rings, 6 expansion sleeves, 7 spring washers, 8 plain washers.
Embodiment
With reference to Figure of description, a kind of easily detachable expansion bolt of the present utility model is described in detail below.
Embodiment 1
As Fig. 1, shown in Fig. 2, a kind of easily detachable expansion bolt, comprise bolt 4, first nut 3 and expansion sleeve 6, bolt 4 comprises the nail head 4c connected successively, screw part 4b and plus thread portion 4a, the external diameter of nail head 4c is greater than described screw part 4b external diameter, screw part 4b and nail head 4c smooth connection, expansion sleeve 6 is sheathed on described bolt 4 from the plus thread portion 4a end of described bolt 4, screw part 4b outer wall is provided with left-hand thread, expansion sleeve 6 inwall is also provided with left-hand thread, expansion sleeve 6 is threaded with screw part 4b, one end that expansion sleeve 6 closes on nail head 4c offer multiple along bolt axis to strip gab, first nut 3 screws on described plus thread portion 4a, screw the effect that the first nut 3 plays fastening EXPANSION ANCHOR BOLTS clockwise.
As shown in Figure 3, plus thread portion 4a is axially arranged with along bolt 4 projection that has clamp face away from one end of screw part 4b, and described protruding 1 is connected as a single entity with plus thread portion 4a, protruding cross section is regular hexagon, there are three pairs of clamp faces, the external diameter of protruding 1 is less than the external diameter of described plus thread portion 4a, because external force collision causes the distortion of plus thread portion, the first nut cannot be dismantled in case install in EXPANSION ANCHOR BOLTS process; One end that expansion sleeve 6 closes on plus thread portion 4a is provided with clamping termination 2 along expansion sleeve 6 direction and described clamping termination 2 and expansion sleeve 6 are connected as a single entity.
The external diameter of described expansion sleeve 6 is less than the external diameter of described clamping termination 2, on bolt 4 between the first nut 3 and expansion sleeve 6, be arranged with spring washer 7 and plain washer 8 successively from plus thread portion 4a, the effect of spring washer 7 prevents loosening of the first nut 3, stablizes EXPANSION ANCHOR BOLTS; Expansion sleeve 6 is arranged with between bare terminal end head 2 and expansion sleeve 6 tail end opening and dismantles packing ring 5, this dismounting packing ring is that plain washer can move on expansion sleeve 6, the object of such setting is the damage in order to prevent from clamping the 2 pairs of bodies of wall in termination in unloading process, and expansion sleeve 6 adopts spring steel material to make.Dismounting packing ring 5 also can.
When installing EXPANSION ANCHOR BOLTS, the long 3 ~ 5mm of length of the punching depth ratio expansion sleeve 6 of electric drill in body of wall.
Unloading process is as follows:
1. when dismantling EXPANSION ANCHOR BOLTS, be first rotated counterclockwise the first nut 3, because expansion sleeve 6 is inner at body of wall, screwing the first nut 3 is to allow the extruding force of nail head 4c to expansion sleeve 6 weaken; After the first nut 3 exits a segment distance, due to the quick recovery effects of the cone angle design of nail head 4c and the Elastic Steel of expansion sleeve 6, the active force between expansion sleeve 6 and body of wall is weakened gradually, until nail head 4c deviates from expansion sleeve 6.
2. first clamping termination 2 fixed by spanner, the clamp face of protruding 1 is clamped again by another spanner, screw protruding 1 clockwise, because the inwall of expansion sleeve 6 is provided with left-hand thread, and be threaded with screw part 4b, therefore screw and make bolt 4 and expansion sleeve 6 produce relative movement, expansion sleeve 6 is to going out, and bolt 4 continues to be inserted in body of wall until 4c overhead in top portion is bottom porthole;
3. screw protruding 1 further, utilize body of wall to the reaction force of nail head 4c end face, expansion sleeve 6 is made to continue to move outside body of wall, in moving process, expansion sleeve opening is subject to the extruding of hole wall and external diameter diminishes, and becomes large with the gap of hole wall, when expansion sleeve opening moves to screw part 4b neutral position from nail head 4c, finally clamp clamping termination 2 and plus thread portion 4a with pliers, outwards exert oneself simultaneously, EXPANSION ANCHOR BOLTS entirety is all extracted.
Embodiment 2
As shown in Figure 4, the present embodiment and first embodiment's difference are that protruding end face is quadrilateral, have two pairs of clamp faces.
Unloading process, with embodiment 1, no longer repeats here.
Embodiment 3
As shown in Fig. 5, Fig. 6, Fig. 7, the present embodiment and previous embodiment's difference are that protruding end face is cydariform, and have two pairs of clamp faces, face is in addition curved surface.
Unloading process, with embodiment 1, no longer repeats here.
The above, just explain through diagrams principles more of the present utility model, this specification is not the utility model to be confined in shown described concrete structure and Applicable scope, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.
Such as, clamping termination can substitute by arranging a pair clamp face in expansion sleeve end, and the external diameter of clamping termination is suitable with the external diameter of expansion sleeve pipe end, can reach the object of the utility model equally.
Except technical characteristics described in specification, all the other technical characteristicss are those skilled in the art's known technology.
Claims (7)
1. an easily detachable expansion bolt, comprise bolt, the first nut and expansion sleeve, described bolt comprise connect successively nail head, screw part and plus thread portion, described nail head external diameter be greater than described screw part external diameter, described screw part and described nail head smooth connection, described expansion sleeve is sheathed on described bolt from the plus thread portion end of described bolt, one end that described expansion sleeve closes on described nail head offer multiple along bolt axis to strip gab, described first nut driving, in described plus thread portion, is characterized in that:
Described plus thread portion is axially arranged with along bolt the projection that has clamp face away from one end of screw part, and described projection and plus thread portion are connected as a single entity;
Described screw part outer wall is provided with left-hand thread, and is connected with the inner thread of expansion sleeve;
One end that described expansion sleeve closes on plus thread portion is provided with clamping termination along expansion sleeve direction, and described clamping termination and expansion sleeve are connected as a single entity.
2. easily detachable expansion bolt according to claim 1, is characterized in that: the external diameter of described projection is no more than the external diameter in described plus thread portion.
3. easily detachable expansion bolt according to claim 1, is characterized in that: the external diameter of described expansion sleeve is less than the external diameter of described clamping termination.
4. easily detachable expansion bolt according to claim 1, is characterized in that: described expansion sleeve is arranged with elasticity between bare terminal end head and expansion sleeve tail end opening and dismantles packing ring.
5. easily detachable expansion bolt according to claim 1, is characterized in that: described projection has at least one pair of clamp face.
6. easily detachable expansion bolt according to claim 1, is characterized in that: described expansion sleeve adopts spring steel material to make.
7. easily detachable expansion bolt according to claim 1, is characterized in that: on described bolt between the first nut and expansion sleeve, is arranged with spring washer and plain washer successively from plus thread portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520069414.XU CN204591908U (en) | 2015-01-30 | 2015-01-30 | Easily detachable expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520069414.XU CN204591908U (en) | 2015-01-30 | 2015-01-30 | Easily detachable expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591908U true CN204591908U (en) | 2015-08-26 |
Family
ID=53928064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520069414.XU Expired - Fee Related CN204591908U (en) | 2015-01-30 | 2015-01-30 | Easily detachable expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591908U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564960A (en) * | 2015-01-30 | 2015-04-29 | 王利烨 | Easy-to-disassemble expansion bolt |
| CN107023547A (en) * | 2015-12-28 | 2017-08-08 | 纽弗雷公司 | fastener and fastening structure |
| CN112656525A (en) * | 2020-12-21 | 2021-04-16 | 深圳市福田区慢性病防治院 | Tooth extraction tool |
-
2015
- 2015-01-30 CN CN201520069414.XU patent/CN204591908U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564960A (en) * | 2015-01-30 | 2015-04-29 | 王利烨 | Easy-to-disassemble expansion bolt |
| CN107023547A (en) * | 2015-12-28 | 2017-08-08 | 纽弗雷公司 | fastener and fastening structure |
| CN112656525A (en) * | 2020-12-21 | 2021-04-16 | 深圳市福田区慢性病防治院 | Tooth extraction tool |
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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: 20150826 Termination date: 20160130 |
|
| EXPY | Termination of patent right or utility model |