CN203730523U - Self-locking wood screw - Google Patents
Self-locking wood screw Download PDFInfo
- Publication number
- CN203730523U CN203730523U CN201420113852.7U CN201420113852U CN203730523U CN 203730523 U CN203730523 U CN 203730523U CN 201420113852 U CN201420113852 U CN 201420113852U CN 203730523 U CN203730523 U CN 203730523U
- Authority
- CN
- China
- Prior art keywords
- screw
- head
- self
- locking
- expansion
- 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 self-locking wood screw. The self-locking wood screw comprises a head, a screw and an expansion body. One end of the screw is fixedly connected with the head, and the other end of the screw is provided with a plurality of expansion pieces along the circumferential direction of the screw. The expansion pieces are surrounded to form an expansion hole. The expansion body comprises a cylinder portion of a cylinder form and a cone-shaped portion of a cone shape. One end of the cylinder portion is fixedly connected with the upper surface of the cone-shaped portion. The cylinder portion is embedded in the expansion hole. An expansion chamber is formed in the expansion hole and used for accommodating the expansion body. A locking portion is arranged on the end surface opposite to the screw of the head. A pre-bored hole is drilled in a wood mounting element to form a connecting hole, and a screw is screwed in the connecting hole and further screwed by rotating the head when the expansion body is abutted against the bottom of the connecting hole. The expansion body is compressed by the cone-shaped portion to enable diameter of the other end opposite the head of the screw to be larger, so that the screw is in snap fit with the connecting hole to achieve self-lock of the wood screw. A corrugated spring is abutted between the head and the mounting element to play the role of a spring gasket, accordingly the self-locking wood screw is prevented against losening, and firmly connection is guaranteed.
Description
Technical field
The utility model relates to a kind of bolt, and more particularly, it relates to a kind of self-locking wood screw.
Background technique
Wood screw is similar to machine screw, but screw thread on screw rod is special wood screw screw thread, can directly screw in Wood member (or part), for one, metal (or nonmetal) part with through hole and a Wood member are fastened together.
At present, the wood screw on market, it comprises head and screw rod.This wood screw, although can more securely the part with through hole be connected with Wood member, in vibration or other situations, wood screw may reverse, the part connecting by wood screw in the course of time becomes loosening, connects built on the sand.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of self-locking wood screw of stable connection.
For achieving the above object, the utility model provides following technological scheme: a kind of self-locking wood screw, comprise head, screw rod and expander, one end of described screw rod is fixedly connected with head, its the other end is circumferentially with several intumescent sheets along screw rod, described several intumescent sheets surround and form inflation port, described expander comprises cylindrical cylindrical portion and is the frustum portion of taper type, one end of described cylindrical portion is fixedly connected with the upper bottom surface of frustum portion, described cylindrical portion is embedded in inflation port, in described inflation port, be provided with the expansion chamber of clamp-oning for expander, the end face of the relative screw rod of described head is provided with locking portion.
By adopting technique scheme, on wooden assembling set, carry out pre-drilled and form attachment hole, screw rod is screwed in attachment hole, be threaded to attachment hole bottom during in the end of screw rod, expander and attachment hole bottom butt, now continuing rotation head is screwed into screw rod in attachment hole, the conical surface extrusion expansion sheet of the frustum portion of expander, make the diameter of the other end of the relative head of screw rod become large, with attachment hole clamping, realize the self-locking of wood screw, the ripple spring of head is supported and is located between head and assembling set simultaneously, play the effect of compression spring, elastic fastening power is provided, effectively prevent that self-locking wood screw is loosening, ensure the firm connection of self-locking wood screw.
The utility model is further set to: described locking portion comprises ripple spring, and described ripple spring is fixedly connected with head.
By adopting technique scheme, ripple spring is good, takes up room little and has reduction noise, reduces the function of vibration, and the steadiness that Self-locking screw is connected further improves.
The utility model is further set to: described ripple spring and head welding.
By adopting technique scheme, adopt the mode of welding, firm and reliable connection, and processing is simple, saves cost of production.
Brief description of the drawings
Fig. 1 is the utility model self-locking wood screw embodiment's stereogram;
Fig. 2 is the utility model self-locking wood screw embodiment's structural representation.
Description of reference numerals: 1, head; 11, locking portion; 2, screw rod; 3, expander; 31, cylindrical portion; 32, frustum portion; 4, intumescent sheet; 5, inflation port; 51, expansion chamber.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model self-locking wood screw embodiment is described further.
A kind of self-locking wood screw, comprise head 1, screw rod 2 and expander 3, one end of described screw rod 2 is fixedly connected with head 1, its the other end is circumferentially with several intumescent sheets 4 along screw rod 2, described several intumescent sheets 4 surround and form inflation port 5, described expander 3 comprises cylindrical cylindrical portion 31 and is the frustum portion 32 of taper type, one end of described cylindrical portion 31 is fixedly connected with the upper bottom surface of frustum portion 32, described cylindrical portion 31 is embedded in inflation port 5 and (it should be noted that herein, between cylindrical portion 31 and intumescent sheet 4, frictionally is entrenched togather), in described inflation port 5, be provided with the expansion chamber 51 of clamp-oning for expander 3, the end face of described head 1 relative screw rod 2 is provided with locking portion 11.
By adopting technique scheme, on wooden assembling set, carry out pre-drilled and form attachment hole, screw rod 2 is screwed in attachment hole, be threaded to attachment hole bottom during in the end of screw rod 2, expander 3 and attachment hole bottom butt, now continuing rotation head 1 is screwed into screw rod 2 in attachment hole, the conical surface extrusion expansion sheet 4 of the frustum portion 32 of expander 3, make the diameter of the other end of the relative head 1 of screw rod 2 become large, with attachment hole clamping, realize the self-locking of wood screw, the ripple spring of head 1 is supported and is located between head 1 and assembling set simultaneously, play the effect of compression spring, elastic fastening power is provided, effectively prevent that self-locking wood screw is loosening, ensure the firm connection of self-locking wood screw.
Described locking portion 11 comprises ripple spring, and described ripple spring is fixedly connected with head 1.
By adopting technique scheme, ripple spring is good, takes up room little and has reduction noise, reduces the function of vibration, and the steadiness that Self-locking screw is connected further improves.
Described ripple spring and head 1 weld.
By adopting technique scheme, adopt the mode of welding, firm and reliable connection, and processing is simple, saves cost of production.
Claims (3)
1. a self-locking wood screw, it is characterized in that: comprise head, screw rod and expander, one end of described screw rod is fixedly connected with head, its the other end is circumferentially with several intumescent sheets along screw rod, described several intumescent sheets surround and form inflation port, described expander comprises cylindrical cylindrical portion and is the frustum portion of taper type, one end of described cylindrical portion is fixedly connected with the upper bottom surface of frustum portion, described cylindrical portion is embedded in inflation port, in described inflation port, be provided with the expansion chamber of clamp-oning for expander, the end face of the relative screw rod of described head is provided with locking portion.
2. self-locking wood screw according to claim 1, is characterized in that: described locking portion comprises ripple spring, and described ripple spring is fixedly connected with head.
3. self-locking wood screw according to claim 2, is characterized in that: described ripple spring and head welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113852.7U CN203730523U (en) | 2014-03-13 | 2014-03-13 | Self-locking wood screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113852.7U CN203730523U (en) | 2014-03-13 | 2014-03-13 | Self-locking wood screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730523U true CN203730523U (en) | 2014-07-23 |
Family
ID=51200601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113852.7U Expired - Fee Related CN203730523U (en) | 2014-03-13 | 2014-03-13 | Self-locking wood screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075163A (en) * | 2022-07-22 | 2022-09-20 | 佳优建筑工程装饰(枣庄)有限公司 | Road engineering prevents moving roadblock |
-
2014
- 2014-03-13 CN CN201420113852.7U patent/CN203730523U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075163A (en) * | 2022-07-22 | 2022-09-20 | 佳优建筑工程装饰(枣庄)有限公司 | Road engineering prevents moving roadblock |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20180313 |