CN201297315Y - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN201297315Y CN201297315Y CNU2008201920398U CN200820192039U CN201297315Y CN 201297315 Y CN201297315 Y CN 201297315Y CN U2008201920398 U CNU2008201920398 U CN U2008201920398U CN 200820192039 U CN200820192039 U CN 200820192039U CN 201297315 Y CN201297315 Y CN 201297315Y
- Authority
- CN
- China
- Prior art keywords
- expansion tube
- nut
- screw rod
- expansion
- head end
- 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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Abstract
The utility model relates to an expansion bolt comprising a screw and an expansion tube. The lower end of the expansion tube is provided with equidistributed open slots, and the lower end of the screw provided with external threads penetrates through the expansion tube. The expansion bolt is characterized in that a screw cap is welded to the upper end of the screw and positioned above the expansion tube; a lower conical nut is screwed to the lower end of the screw and positioned below the expansion tube; the small head end of the lower conical nut faces upward; the outside diameter of the small head end of the lower conical nut is less than or equal to the inside diameter of the expansion tube; and the outside diameter of the large head end of the lower conical nut is larger than the inside diameter of the expansion tube. When the expansion bolt is in use, the screw protrudes less, thereby being attractive.
Description
Technical field
The utility model 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 purpose of this utility model is to provide a kind of EXPANSION ANCHOR BOLTS, and after this EXPANSION ANCHOR BOLTS was used, screw rod exposes few, and was attractive in appearance.
To achieve these goals, the technical solution of the utility model 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 beneficial effects of the utility model are: 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 utility model embodiment 1 a structural representation;
Fig. 2 is the utility model embodiment 2 a structural representation;
Fig. 3 is the utility model embodiment 3 a structural representation;
Fig. 4 is the utility model embodiment 4 a structural representation;
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 |
|---|---|---|---|
| CNU2008201920398U CN201297315Y (en) | 2008-11-03 | 2008-11-03 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201920398U CN201297315Y (en) | 2008-11-03 | 2008-11-03 | Expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297315Y true CN201297315Y (en) | 2009-08-26 |
Family
ID=41043294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201920398U Expired - Fee Related CN201297315Y (en) | 2008-11-03 | 2008-11-03 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297315Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2008
- 2008-11-03 CN CNU2008201920398U patent/CN201297315Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DEBANG INDUSTRIAL CO., LTD., YUNMENG COUNTY Free format text: FORMER OWNER: HUBEI WENBANG PLASTICS CO., LTD. Effective date: 20100914 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 432500 TECHNOLOGY CENTER, 2/F, FIRSTA BUILDING, NO.20, MENGZE STREET, CHENGGUAN, YUNMENG COUNTY, XIAOGAN CITY, HUBEI PROVINCE TO: 432500 MENGZE AVENUE, CHENGGUAN, YUNMENG COUNTY, XIAOGAN CITY, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100914 Address after: 432500 Xiaogan City, Hubei Province Chengguan Yunmeng County Mengzhe Avenue Patentee after: Yunmeng Debang Industrial Co., Ltd. Address before: The first building No. 20 Chengguan Xiaogan 432500 Hubei County of Yunmeng province Mengzhe Avenue 2 floor technology center Patentee before: Hubei Wenbang Plastics Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20121103 |