CN203879876U - Three-piece type expansion screw - Google Patents
Three-piece type expansion screw Download PDFInfo
- Publication number
- CN203879876U CN203879876U CN201420297961.9U CN201420297961U CN203879876U CN 203879876 U CN203879876 U CN 203879876U CN 201420297961 U CN201420297961 U CN 201420297961U CN 203879876 U CN203879876 U CN 203879876U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- plunger
- bolt
- slope
- intumescent sheet
- 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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- Connection Of Plates (AREA)
Abstract
The utility model discloses a three-piece type expansion screw which is composed of a bolt, a gasket, a sleeve and a plunger. The sleeve is composed of three circular-arc-shaped expansion pieces, the tails of the three circular-arc-shaped expansion pieces are tightly hooped by a stamped cylindrical sleeve formed, the middles of the three expansion pieces are tightly hooped by a steel wire ring, the heads of two expansion pieces are intersected to form an outward horn mouth, the heads of the expansion pieces are provided with round opening flanges bent inwards, a turned slope is arranged on the outer surface of the plunger, and the round opening flanges clamp the slope. The three-piece type expansion screw has the advantages that a chamfer and a bundle tail are arranged, and when mounting is carried out again, the bolt can be conveniently screwed in; the round opening flanges and the slope are arranged, when the bolt is pulled out, the round opening flanges can force the central line of the plunger not to greatly shift, and mounting can be conveniently carried out again; a plurality of anti-sliding protrusions are arranged, and the sleeve is prevented from shaking or shifting.
Description
Technical field
The utility model relates to a kind of setscrew, specifically a kind of three pieces type setscrew.
Background technique
Setscrew is generally all made up of two parts, an activity, and one is fixing, under the effect of external force, two parts interact, and movable part or fixed component are deformed, it is large that local volume becomes, and becomes also larger than cinclides internal diameter, thereby produce coupling mechanism force.
EXPANSION ANCHOR BOLTS on market has a variety of, all for certain specific occasion is used design, such as road surface, metope or thin plate etc.
Three pieces type setscrew is generally used for road surface or metope, belong to heavy setscrew, after existing three pieces type setscrew is fixing, again install inconvenient, bolt is not easy to aim at embolism, is difficult for precession, such as railing on road surface, may sunken cord and need of short duration dismounting because of borehole, after several days, reset again.
Summary of the invention
The utility model, for prior art deficiency, provides one that three pieces type setscrew is eaily installed again.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of three pieces type setscrew is by bolt, pad, sleeve and plunger composition, described sleeve is made up of the intumescent sheet of three circular arcs, the cylindrical sleeve banding that the afterbody of the intumescent sheet described in three forms with punching press, on the neutral position of the intumescent sheet described in three, use steel traveler banding, head between intumescent sheet described in two crosses and forms a horn mouth outwardly, the head of described intumescent sheet is provided with aduncate round mouth flange, on the outer surface of described plunger, be provided with the slope that turning forms, described round mouth flange clamps described slope.
Described pad is basin pad, and the opening end of described basin pad is towards described cylindrical sleeve.
On the internal surface of described plunger, be provided with chamfering, the opening of described chamfering is towards described cylindrical sleeve.
On described bolt, be provided with Beam End, described Beam End matches with described chamfering.
On the outer surface of the head of described intumescent sheet, be provided with several anti-skidding projections.
The utility model compared with prior art, has following beneficial effect: 1, be provided with chamfering and Beam End, while again installation, facilitate bolt to screw in; 2, be provided with round mouth flange and slope, after bolt is extracted, round mouth flange can force the center line of plunger that large skew does not occur, convenient installation again; 3, be provided with several anti-skidding projections, prevent that sleeve from rocking or being shifted.
Brief description of the drawings
Fig. 1 is the utility model embodiment's structural representation.
Fig. 2 is the utility model embodiment's sectional drawing.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail: as shown in Figure 1 and Figure 2, in figure, mark is as follows: bolt 1, pad 2, sleeve 3, plunger 4, intumescent sheet 5, cylindrical sleeve 6, steel traveler 7, round mouth flange 8, slope 9, chamfering 10, Beam End 11, anti-skidding protruding 12.
A kind of three pieces type setscrew is by bolt 1, pad 2, sleeve 3 and plunger 4 form, sleeve 3 is made up of the intumescent sheet 5 of three circular arcs, cylindrical sleeve 6 bandings that the afterbody of three intumescent sheets 5 forms with punching press, on the neutral position of three intumescent sheets 5, use steel traveler 7 bandings, the head of two intumescent sheets 5 crosses and forms a horn mouth outwardly, the head of intumescent sheet 5 is provided with aduncate round mouth flange 8, on the outer surface of columniform plunger 4, be provided with the slope 9 that turning forms, three round mouth flange 8 clamp slope 9 together, the center line that can force plunger 4 is consistent with bolt 1, convenient installation again.
Pad 2 is basin pad, when bolt 1 screws in, can produce elasticity, makes the screw thread of bolt 1 produce coupling mechanism force, and the opening end of basin pad is towards cylindrical sleeve 6.
On the internal surface of plunger 4, be provided with chamfering 10, the opening of chamfering 10 is towards cylindrical sleeve 6.
On bolt 1, be provided with Beam End 11, Beam End 11 matches with chamfering 10, convenient installation again.
On the outer surface of the head of intumescent sheet 5, be provided with multiple anti-skidding protrudingly 12, the height of projection is not high, has 0.3 millimeter, can not have influence on insertion, but can promote and the friction of cinclides.
Claims (5)
1. a three pieces type setscrew, formed by bolt (1), pad (2), sleeve (3) and plunger (4), described sleeve (3) is made up of the intumescent sheet (5) of three circular arcs, cylindrical sleeve (6) banding that the afterbody of the intumescent sheet (5) described in three forms with punching press, on the neutral position of the intumescent sheet (5) described in three, use steel traveler (7) banding, the head of the intumescent sheet (5) described in two crosses and forms a horn mouth outwardly, it is characterized in that; The head of described intumescent sheet (5) is provided with aduncate round mouth flange (8), is provided with the slope (9) that turning forms on the outer surface of described plunger (4), and described round mouth flange (8) clamps described slope (9).
2. three pieces type setscrew as claimed in claim 1, is characterized in that: described pad (2) is basin pad, and the opening end of described basin pad is towards described cylindrical sleeve (6).
3. three pieces type setscrew as claimed in claim 1, is characterized in that; On the internal surface of described plunger (4), be provided with chamfering (10), the opening of described chamfering (10) is towards described cylindrical sleeve (6).
4. three pieces type setscrew as claimed in claim 3, is characterized in that: on described bolt (1), be provided with Beam End (11), described Beam End (11) matches with described chamfering (10).
5. three pieces type setscrew as claimed in claim 1, is characterized in that: on the outer surface of the head of described intumescent sheet (5), be provided with several anti-skidding projections (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297961.9U CN203879876U (en) | 2014-06-06 | 2014-06-06 | Three-piece type expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297961.9U CN203879876U (en) | 2014-06-06 | 2014-06-06 | Three-piece type expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879876U true CN203879876U (en) | 2014-10-15 |
Family
ID=51680376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297961.9U Expired - Fee Related CN203879876U (en) | 2014-06-06 | 2014-06-06 | Three-piece type expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879876U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759871A (en) * | 2017-01-25 | 2017-05-31 | 哈尔滨工业大学 | A kind of aluminium alloy assembled connecting node for large-span space structure |
| CN114193102A (en) * | 2021-12-20 | 2022-03-18 | 芜湖兆合汽车零部件科技有限公司 | Production process of high-strength expansion fastener |
-
2014
- 2014-06-06 CN CN201420297961.9U patent/CN203879876U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759871A (en) * | 2017-01-25 | 2017-05-31 | 哈尔滨工业大学 | A kind of aluminium alloy assembled connecting node for large-span space structure |
| CN114193102A (en) * | 2021-12-20 | 2022-03-18 | 芜湖兆合汽车零部件科技有限公司 | Production process of high-strength expansion fastener |
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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: 20141015 Termination date: 20150606 |
|
| EXPY | Termination of patent right or utility model |