CN202152783U - Combined expansion screw - Google Patents
Combined expansion screw Download PDFInfo
- Publication number
- CN202152783U CN202152783U CN2011202737724U CN201120273772U CN202152783U CN 202152783 U CN202152783 U CN 202152783U CN 2011202737724 U CN2011202737724 U CN 2011202737724U CN 201120273772 U CN201120273772 U CN 201120273772U CN 202152783 U CN202152783 U CN 202152783U
- Authority
- CN
- China
- Prior art keywords
- screw
- circular groove
- inner hole
- screw sleeve
- nail
- 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 discloses a combined expansion screw, which comprises a screw and a screw sleeve, wherein an inner hole for allowing the screw to penetrate is formed in the screw sleeve; and the combined expansion screw is characterized in that a plurality of expansion joints are axially formed around the lower part of the screw sleeve, the lower part of the inner hole is contracted towards the central position to form a conical hole with a big upper part and a small lower part, a plurality of isolation joints are axially formed around the side wall of the inner hole, a circular groove coaxial with the inner hole is formed at the upper end of the screw sleeve, the radius of the circular groove is greater than that of the inner hole, a cap is detachably connected in the circular groove, and a plurality of convex edges matched with the isolation joints and capable of being clamped in the isolation joints are axially arranged around the side wall of the screw. The inner hole is conical, the expansion joints are formed on the screw sleeve, after the fastening hole is dug, the screw is hit into the inner hole, the screw sleeve is forced to be expanded through the screw, and the screw sleeve can be further fixed; the lug boss on the screw is pushed out of the screw sleeve, and then the screw can be automatically locked in the screw sleeve, so as to prevent the screw from being loosened; and the arrangement of the cap is convenient for the screw to be stored with the screw sleeve in a combined manner.
Description
Technical field
The utility model belongs to the object fastener areas, is specifically related to a kind of combined type expandable nail.
Background technique
Expandable nail in the market is to be made up of screw and outside nail cover thereof, and its expansion angle is that the width bottom the nail cover decides, so restriction to some extent, the space is big within the walls in case run into, and is difficult to swelling, is prone to loosening; And screw is prone to rotate displacement in nail cover, thereby influences the overall structure performance; In addition, screw and nail cover produced by separation, transportation, some needs matching usedly easyly to obscure, and makes troubles to use.
Summary of the invention
The utility model technical problem to be solved is the deficiency to above-mentioned existing technology, a kind of combined type expandable nail is provided, but its thermal expansion free adjustment is fastening effective, and stores, can screw and nail cover be combined into one when transporting.
The technological scheme that the utility model adopted is: a kind of combined type expandable nail; Comprise screw and nail cover, be provided with the endoporus that supplies screw to penetrate in the said nail cover, said nail cover is axially arranged with several dilatation joints around the bottom; Said endoporus bottom shrink to form a up big and down small cone shape hole to the central position; Be axially arranged with several partitioning slot around the said endoporus sidewall, said nail set upper side is provided with a circular groove coaxial with said endoporus, and the radius of this circular groove is greater than said interior pore radius; Be axially arranged with several around the cap that removably connects in the said circular groove, said screw sidewall with above-mentioned partitioning slot coupling and can block and end its interior fin.
As preferably, said being detachably connected as is threaded, and is provided with the internal thread and the outside thread of mutual coupling at the circular groove position that contacts with cap.
As preferably, said screw lower end is provided with boss.
The beneficial effect of the utility model is: because endoporus is tapered and nail puts and is provided with dilatation joint, after accomplishing fluently fastener hole, screw is squeezed in the endoporus, screw compressing nail cover distending just can be fixed; Boss on the screw can prevent to become flexible with the screw auto lock in the nail cover after being pushed out the nail cover; Only the partitioning slot and the fin of coupling can further prevent screw rotation displacement in the nail cover to card on endoporus and the screw; And the setting of cap can be convenient to screw and nail cover combination storage, avoids screw and nail cover to store the inconvenience that brings respectively.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model sectional view;
Fig. 3 is an A-A sectional view among Fig. 2.
Among the figure: 2, nail cover; 3, dilatation joint; 4, screw; 5, circular groove; 6, cap; 7, boss; 8, partitioning slot; 9, fin.
Embodiment
To combine accompanying drawing and specific embodiment that the utility model is done further explain below.
Like Fig. 1, Fig. 2 and shown in Figure 3; A kind of combined type expandable nail comprises screw 4 and nail cover 2, is provided with the endoporus that supplies screw 4 to penetrate in the said nail cover 2; Said nail is axially arranged with several dilatation joints 3 around overlapping 2 bottoms; Said endoporus bottom shrink to form a up big and down small cone shape hole to the central position, is axially arranged with several partitioning slot 8 around the said endoporus sidewall, and said nail overlaps 2 upper ends and is provided with a circular groove 5 coaxial with said endoporus; The radius of this circular groove 5 is greater than pore radius in said; Said circular groove 5 internal threads connect a cap 6, are provided with the internal thread and the outside thread of mutual coupling at circular groove 5 position that contacts with cap 6, are axially arranged with several around said screw 4 sidewalls with above-mentioned partitioning slot 8 couplings and can block and end its interior fin 9.Said screw 4 lower ends are provided with boss 7.
Claims (3)
1. combined type expandable nail; Comprise screw (4) and nail cover (2); Be provided with the endoporus that supplies screw (4) to penetrate in the said nail cover (2); It is characterized in that: be axially arranged with several dilatation joints (3) around said nail cover (2) bottom, said endoporus bottom is shunk to the central position and is formed a up big and down small cone shape hole, is axially arranged with several partitioning slot (8) around the said endoporus sidewall; Said nail cover (2) upper end is provided with a circular groove (5) coaxial with said endoporus; The radius of this circular groove (5) is greater than pore radius in said, and the cap (6) that removably connects in the said circular groove (5), said screw (4) sidewall are axially arranged with several all around and only its interior fin (9) is mated and can be blocked to above-mentioned partitioning slot (8).
2. combined type expandable nail according to claim 1 is characterized in that: said being detachably connected as is threaded, and is provided with the internal thread and the outside thread of mutual coupling at circular groove (5) position that contacts with cap (6).
3. combined type expandable nail according to claim 1 is characterized in that: said screw (4) lower end is provided with boss (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202737724U CN202152783U (en) | 2011-07-30 | 2011-07-30 | Combined expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202737724U CN202152783U (en) | 2011-07-30 | 2011-07-30 | Combined expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152783U true CN202152783U (en) | 2012-02-29 |
Family
ID=45693279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202737724U Expired - Fee Related CN202152783U (en) | 2011-07-30 | 2011-07-30 | Combined expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152783U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989984A (en) * | 2015-07-15 | 2015-10-21 | 深圳市灿明科技有限公司 | LED module fixing part and LED module |
| CN105196246A (en) * | 2015-09-29 | 2015-12-30 | 河南航天精工制造有限公司 | Flaring locking tool for self-locking swivel nut and flaring connector used by same |
| CN106640895A (en) * | 2016-12-31 | 2017-05-10 | 重庆大学 | Double-nut screw type fixed connector based on push expansion elastic deformation |
| CN109026936A (en) * | 2018-09-30 | 2018-12-18 | 中冶交通建设集团有限公司 | A kind of expansion bolt |
-
2011
- 2011-07-30 CN CN2011202737724U patent/CN202152783U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989984A (en) * | 2015-07-15 | 2015-10-21 | 深圳市灿明科技有限公司 | LED module fixing part and LED module |
| CN105196246A (en) * | 2015-09-29 | 2015-12-30 | 河南航天精工制造有限公司 | Flaring locking tool for self-locking swivel nut and flaring connector used by same |
| CN106640895A (en) * | 2016-12-31 | 2017-05-10 | 重庆大学 | Double-nut screw type fixed connector based on push expansion elastic deformation |
| CN109026936A (en) * | 2018-09-30 | 2018-12-18 | 中冶交通建设集团有限公司 | A kind of expansion bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20120730 |