CN101392781A - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN101392781A CN101392781A CNA2008101975060A CN200810197506A CN101392781A CN 101392781 A CN101392781 A CN 101392781A CN A2008101975060 A CNA2008101975060 A CN A2008101975060A CN 200810197506 A CN200810197506 A CN 200810197506A CN 101392781 A CN101392781 A CN 101392781A
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- expansion tube
- nut
- screw rod
- expansion
- head end
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Abstract
The invention relates to an expansion bolt, which comprises a threaded rod and an expansion tube, wherein the lower end part of the expansion tube is provided with equant open slots, the threaded rod is provided with outside threads, and the lower end part of the threaded rod passes through the expansion tube. The expansion bolt is characterized in that a screw cap is welded on the upper end of the threaded rod and is positioned on the expansion tube; a lower tapered nut is screwed on the lower end part of the threaded rod and is positioned under the expansion tube, the small head end of the lower tapered nut faces upwards, the outer diameter of the small head end of the lower tapered nut is less than or equal to the inner diameter of the expansion tube, and the outer diameter of the big head end of the lower tapered nut is larger than the inner diameter of the expansion tube. When the expansion bolt is used, the threaded rod is exposed little and the expansion bolt is beautiful.
Description
Technical field
The present invention relates to a kind of EXPANSION ANCHOR BOLTS.
Background technique
Present EXPANSION ANCHOR BOLTS, as Chinese patent application number: 200610038227.0 (strong expansion bolts) etc., all be to adopt the nut that is rotated on the screw rod, screw rod is relative to move up (outwards moving), nut moves on screw rod and compresses tapered cap, make the tapered cap that is fixed on the screw rod press to expansion tube, it is fixing to realize expanding.Because screw rod moves up (with respect to expansion tube) relatively, after EXPANSION ANCHOR BOLTS was fixing, it is longer outward that screw rod exposes fixed body, becomes a kind of obstacle, also influences attractive in appearance.
Summary of the invention
The object of the present invention is to provide a kind of EXPANSION ANCHOR BOLTS, after this EXPANSION ANCHOR BOLTS was used, screw rod exposes few, and was attractive in appearance.
To achieve these goals, technological scheme of the present invention is: EXPANSION ANCHOR BOLTS, and it comprises screw rod, expansion tube, and the underpart of expansion tube has the opening slot of five equilibrium, and screw rod is provided with outside thread, and expansion tube is passed in the underpart of screw rod; It is characterized in that: the upper end of screw rod is welded with nut, and nut is positioned at the top of expansion tube; The underpart of screw rod is rotary with the inferior pyramidal nut, the inferior pyramidal nut is positioned at the below of expansion tube, the little head end of inferior pyramidal nut up, the external diameter of the little head end of inferior pyramidal nut is less than or equal to the internal diameter of expansion tube, the external diameter of the stub end of inferior pyramidal nut is greater than the internal diameter of expansion tube.
Outside thread on the described screw rod is made up of upper external thread, lower external thread two-part, and lower external thread and upper external thread on the screw rod are reverse, and the top of screw rod is rotary with upper conical nut, and upper conical nut is positioned at the top of expansion tube; The upper end portion of expansion tube has the opening slot of five equilibrium; The little head end of upper conical nut down, the external diameter of the little head end of upper conical nut is less than or equal to the internal diameter of expansion tube, the external diameter of the stub end of upper conical nut is greater than the internal diameter of expansion tube.
Be with packing ring on the screw rod, packing ring is positioned at the top of expansion tube.
Be with the epicone body on the described screw rod, the epicone body is provided with screw vent, and screw rod passes the screw vent of epicone body, and upper conical body is positioned at the top of expansion tube; The upper end portion of expansion tube has the opening slot of five equilibrium; The little head end of epicone body down, the external diameter of the little head end of epicone body is less than or equal to the internal diameter of expansion tube, the external diameter of the stub end of epicone body is greater than the internal diameter of expansion tube.
The bottom of described nut is a taper, and the upper end portion of expansion tube has the opening slot of five equilibrium; The little head end of the taper of nut down, the external diameter of the little head end of the taper of nut is less than or equal to the internal diameter of expansion tube, the external diameter of the stub end of the taper of nut is greater than the internal diameter of expansion tube.
The invention has the beneficial effects as follows: adopt said structure, use the wrench rotary nut, screw rod moves down, and the inferior pyramidal nut moves up, and the inferior pyramidal nut inserts in the expansion tube, and it is fixing to realize expanding; Because screw rod moves down, screw rod exposes few, and is attractive in appearance.Adopt two tapered cup nuts to move to expansion tube simultaneously and insert in the expansion tube, fixed speed is fast, fastness is high, stress effect is good.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2;
Fig. 3 is the structural representation of the embodiment of the invention 3;
Fig. 4 is the structural representation of the embodiment of the invention 4;
Among the figure: 1-screw rod, 2-inferior pyramidal nut, 3-expansion tube, 4-opening slot, the upper conical nut of 5-, 6-packing ring, 7-nut, 8-epicone body.
Embodiment
Embodiment 1:
As shown in Figure 1, EXPANSION ANCHOR BOLTS, it comprises screw rod 1, inferior pyramidal nut 2, expansion tube 3, packing ring 6, nut 7, and the underpart of expansion tube 3 has the opening slot 4 of five equilibrium, and screw rod 1 is provided with outside thread, and expansion tube 3 is passed in the underpart of screw rod 1; The upper end of screw rod 1 is welded with nut 7 (nut 7 also can be structure as a whole with screw rod 1), and nut 7 is positioned at the top of expansion tube 3; Be with packing ring 6 on the screw rod 1, packing ring 6 is positioned at the top of expansion tube 3; The underpart of screw rod 1 is rotary with inferior pyramidal nut 2, inferior pyramidal nut 2 is positioned at the below of expansion tube 3, the little head end of inferior pyramidal nut 2 up, the external diameter of the little head end of inferior pyramidal nut 2 is less than or equal to the internal diameter of expansion tube 3, the external diameter of the stub end of inferior pyramidal nut 2 is greater than the internal diameter of expansion tube 3.The upper end of screw rod 1 has the screw edge of a knife, also can pass through screw edge of a knife rotary screw 1.
Embodiment 2:
As shown in Figure 2, EXPANSION ANCHOR BOLTS, it comprises screw rod 1, inferior pyramidal nut 2, expansion tube 3, upper conical nut 5, packing ring 6, nut 7; The two end part of expansion tube 3 all have the opening slot 4 of five equilibrium; Top, the bottom of screw rod 1 are respectively equipped with outside thread, and the lower external thread and the upper external thread of screw rod 1 are reverse; Be with packing ring 6 on the screw rod 1, packing ring 6 is positioned at the top of expansion tube 3; The top of screw rod 1 is rotary with upper conical nut 5, upper conical nut 5 is (upper conical nut 5 is positioned at the top of expansion tube 3) between packing ring 6 and expansion tube 3, the upper end of screw rod 1 is welded with nut 7 (nut 7 also can be structure as a whole with screw rod 1), and nut 7 is positioned at the top of expansion tube 3; The little head end of upper conical nut 5 down, the external diameter of the little head end of upper conical nut 5 is less than or equal to the internal diameter of expansion tube 3, the external diameter of the stub end of upper conical nut 5 is greater than the internal diameter of expansion tube 3; Expansion tube 3 is passed in the underpart of screw rod 1, the underpart of screw rod 1 is rotary with inferior pyramidal nut 2, inferior pyramidal nut 2 is positioned at the below of expansion tube 3, the little head end of inferior pyramidal nut 2 up, the external diameter of the little head end of inferior pyramidal nut 2 is less than or equal to the internal diameter of expansion tube 3, and the external diameter of the stub end of inferior pyramidal nut 2 is greater than the internal diameter of expansion tube 3.
Embodiment 3:
As shown in Figure 3, substantially the same manner as Example 1, difference is: be with epicone body 8 on the described screw rod 1, epicone body 8 is provided with screw vent, and screw rod 1 passes the screw vent of epicone body 8, and epicone body 8 is positioned at the top of expansion tube 3; The upper end portion of expansion tube 3 has the opening slot of five equilibrium; The little head end of epicone body 8 down, the external diameter of the little head end of epicone body 8 is less than or equal to the internal diameter of expansion tube 3, the external diameter of the stub end of epicone body 8 is greater than the internal diameter of expansion tube 3.During rotation, nut 7 is pressed into epicone body 8 in the expansion tube 3.
Embodiment 4:
As shown in Figure 4, EXPANSION ANCHOR BOLTS, it comprises screw rod 1, inferior pyramidal nut 2, expansion tube 3, nut 7, and the two end part of expansion tube 3 all have the opening slot 4 of five equilibrium, and screw rod 1 is provided with outside thread, and expansion tube 3 is passed in the underpart of screw rod 1; The upper end of screw rod 1 is welded with nut 7 (nut 7 also can be structure as a whole with screw rod 1), and nut 7 is positioned at the top of expansion tube 3; The underpart of screw rod 1 is rotary with inferior pyramidal nut 2, inferior pyramidal nut 2 is positioned at the below of expansion tube 3, the little head end of inferior pyramidal nut 2 up, the external diameter of the little head end of inferior pyramidal nut 2 is less than or equal to the internal diameter of expansion tube 3, the external diameter of the stub end of inferior pyramidal nut 2 is greater than the internal diameter of expansion tube 3; The bottom of described nut 7 is a taper; The little head end of the taper of nut 7 down, the external diameter of the little head end of the taper of nut 7 is less than or equal to the internal diameter of expansion tube 3, the external diameter of the stub end of the taper of nut 7 is greater than the internal diameter of expansion tube 3.
Claims (5)
1. EXPANSION ANCHOR BOLTS, it comprises screw rod (1), expansion tube (3), and the underpart of expansion tube (3) has the opening slot (4) of five equilibrium, and screw rod (1) is provided with outside thread, and expansion tube (3) is passed in the underpart of screw rod (1); It is characterized in that: the upper end of screw rod (1) is welded with nut (7), and nut (7) is positioned at the top of expansion tube (3); The underpart of screw rod (1) is rotary with inferior pyramidal nut (2), inferior pyramidal nut (2) is positioned at the below of expansion tube (3), the little head end of inferior pyramidal nut (2) up, the external diameter of the little head end of inferior pyramidal nut (2) is less than or equal to the internal diameter of expansion tube (3), and the external diameter of the stub end of inferior pyramidal nut (2) is greater than the internal diameter of expansion tube (3).
2. EXPANSION ANCHOR BOLTS according to claim 1, it is characterized in that: the outside thread on the described screw rod (1) is made up of upper external thread, lower external thread two-part, lower external thread and upper external thread on the screw rod (1) are reverse, the top of screw rod (1) is rotary with upper conical nut (5), and upper conical nut (5) is positioned at the top of expansion tube (3); The upper end portion of expansion tube (3) has the opening slot of five equilibrium; The little head end of upper conical nut (5) down, the external diameter of the little head end of upper conical nut (5) is less than or equal to the internal diameter of expansion tube (3), the external diameter of the stub end of upper conical nut (5) is greater than the internal diameter of expansion tube (3).
3. EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: be with packing ring (6) on the described screw rod (1), packing ring (6) is positioned at the top of expansion tube (3).
4. EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: be with epicone body (8) on the described screw rod (1), epicone body (8) is positioned at the top of expansion tube (3); The upper end portion of expansion tube (3) has the opening slot of five equilibrium; The little head end of epicone body (8) down, the external diameter of the little head end of epicone body (8) is less than or equal to the internal diameter of expansion tube (3), the external diameter of the stub end of epicone body (8) is greater than the internal diameter of expansion tube (3).
5. EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: the bottom of described nut (7) is a taper, and the upper end portion of expansion tube (3) has the opening slot (4) of five equilibrium; The little head end of the taper of nut (7) down, the external diameter of the little head end of the taper of nut (7) is less than or equal to the internal diameter of expansion tube (3), the external diameter of the stub end of the taper of nut (7) is greater than the internal diameter of expansion tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101975060A CN101392781A (en) | 2008-11-03 | 2008-11-03 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101975060A CN101392781A (en) | 2008-11-03 | 2008-11-03 | Expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101392781A true CN101392781A (en) | 2009-03-25 |
Family
ID=40493239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101975060A Pending CN101392781A (en) | 2008-11-03 | 2008-11-03 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101392781A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086704A (en) * | 2009-12-04 | 2011-06-08 | 陈敏 | Adjustable jack post |
| CN102644640A (en) * | 2012-04-10 | 2012-08-22 | 余爱芳 | Bidirectional reverse-propelling fastening bolt |
| CN104454864A (en) * | 2014-11-29 | 2015-03-25 | 黄传勇 | Hedging type expansion bolt |
| CN104533908A (en) * | 2014-12-19 | 2015-04-22 | 陈辉远 | Recoverable expansion screw |
| CN108817796A (en) * | 2018-06-27 | 2018-11-16 | 温州盛禾机械科技有限公司 | Board shaft concentricity positioning tooling fixture and its welding procedure |
| CN115111244A (en) * | 2022-07-22 | 2022-09-27 | 河北省送变电有限公司 | Expansion bolt |
-
2008
- 2008-11-03 CN CNA2008101975060A patent/CN101392781A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086704A (en) * | 2009-12-04 | 2011-06-08 | 陈敏 | Adjustable jack post |
| CN102086704B (en) * | 2009-12-04 | 2014-02-26 | 陈敏 | Adjustable jack post |
| CN102644640A (en) * | 2012-04-10 | 2012-08-22 | 余爱芳 | Bidirectional reverse-propelling fastening bolt |
| CN104454864A (en) * | 2014-11-29 | 2015-03-25 | 黄传勇 | Hedging type expansion bolt |
| CN104533908A (en) * | 2014-12-19 | 2015-04-22 | 陈辉远 | Recoverable expansion screw |
| CN108817796A (en) * | 2018-06-27 | 2018-11-16 | 温州盛禾机械科技有限公司 | Board shaft concentricity positioning tooling fixture and its welding procedure |
| CN115111244A (en) * | 2022-07-22 | 2022-09-27 | 河北省送变电有限公司 | Expansion bolt |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Open date: 20090325 |