CN102588412A - Locking screw - Google Patents
Locking screw Download PDFInfo
- Publication number
- CN102588412A CN102588412A CN2011104250784A CN201110425078A CN102588412A CN 102588412 A CN102588412 A CN 102588412A CN 2011104250784 A CN2011104250784 A CN 2011104250784A CN 201110425078 A CN201110425078 A CN 201110425078A CN 102588412 A CN102588412 A CN 102588412A
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- CN
- China
- Prior art keywords
- thread portion
- helical thread
- helical
- lock screw
- locking screw
- 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.)
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Abstract
The invention relates to a locking screw, which is characterized by consisting of a first thread portion and a second thread portion. An annular bayonet is arranged at a boundary of the first thread portion and the second thread portion, the tooth pitch of the first thread portion is larger than that of the second thread portion, oblique teeth are arranged on a surface, facing to the second thread portion, of the annular bayonet, the insection screwing direction of the oblique teeth is opposite to the thread screwing direction of the second thread portion, and the edge of the head of the second thread portion is in the shape of a regular polygon. During screwing of the locking screw, the reliable screwing direction and clamping of the screw are guaranteed, heavy machine materials such as two connecting steel plates and the like can be connected by the locking screw, the two materials cannot be separated from each other, and the locking screw has a locking function.
Description
Technical field
The present invention relates to a kind of screw, especially relate to a kind of lock screw that the locking of heavy-duty machine two materials connects that is used for.
Background technique
[0002] connection that generally is used for two kinds of materials on the heavy-duty machine all is to adopt common rivet; Directly rivet is squeezed into two materials through the external force effect; Two materials are fixed; But the outside of this type of rivet still exposes in a kind of outside of material, influences its outer aesthetic property, and two kinds of sheet materials are easy to the rivet that fractures under the shearing stress effect.
Summary of the invention
Technical problem to be solved by this invention provides a kind of lock screw that the locking of heavy-duty machine two materials connects that is used for.
The present invention solves the technological scheme that its technical problem takes: a kind of lock screw; This lock screw is made up of first helical thread portion and second helical thread portion; Said first helical thread portion and the second helical thread portion intersection are provided with annular bayonet socket, and the tooth pitch of said first helical thread portion is greater than the tooth pitch of second helical thread portion.
For fastening one of them sheet material of ability, said annular bayonet socket offers helical teeth on the face of the second helical thread portion direction, and the groove rotation direction of said helical teeth is opposite with the thread rotary orientation of second helical thread portion.
In order to fasten firmly one of them material, the head edge of said second helical thread portion is how much shapes of regular polygon, and this head edge is fastened on the inside of one of them material.
Further, said head edge is positive Hexangular Star.
The invention has the beneficial effects as follows: reliable rotation direction and clamping when apparatus of the present invention screw relates generally to the screw precession, be used to connect heavy-duty machine materials such as two block plates, can not make two bulk matter produce break-off, have locking function.
Description of drawings
Fig. 1 is the schematic representation of apparatus of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the worm's eye view of Fig. 1.
Among the figure: 1, first helical thread portion 2, second helical thread portion 21, head edge 3, annular bayonet socket 4, helical teeth.
Embodiment
A kind of lock screw shown in Figure 1; This lock screw is made up of first helical thread portion 1 and second helical thread portion 2; Said first helical thread portion 1 and second helical thread portion, 2 intersections are provided with annular bayonet socket 3, and the tooth pitch of said first helical thread portion 1 greater than the tooth pitch of second helical thread portion 2 at connection two boards material is; The plate that is connected with second helical thread portion, 2 elder generations is then as substrate, and the precessing force of second helical thread portion 2 is greater than the precessing force of first helical thread portion 1.
Offer helical teeth 31 on the face of annular bayonet socket 3 towards second helical thread portions 2 directions shown in Figure 2, the groove rotation direction of said helical teeth 31 is opposite with the thread rotary orientation of second helical thread portion 2, and purpose is the substrate that links closely and be connected with second helical thread portion 2.
The head edge 21 of second helical thread portion 2 shown in Figure 3 is how much shapes of regular polygon, and this head edge 21 is fastened on the inside of substrate.
Further, said head edge 21 is positive Hexangular Star.
Reliable rotation direction and clamping when apparatus of the present invention screw relates generally to the screw precession are used to connect heavy-duty machine materials such as two block plates, can not make two bulk matter produce break-off, have locking function.
It is emphasized that: above only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technological scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. lock screw; It is characterized in that: this lock screw is made up of first helical thread portion (1) and second helical thread portion (2); Said first helical thread portion (1) is provided with annular bayonet socket (3) with second helical thread portion (2) intersection, and the tooth pitch of said first helical thread portion (1) is greater than the tooth pitch of second helical thread portion (2).
2. lock screw according to claim 1; It is characterized in that: said annular bayonet socket (2) offers helical teeth (31) on the face of second helical thread portion (2) direction, and the thread rotary orientation of the groove rotation direction of said helical teeth (31) and second helical thread portion (2) is opposite.
3. lock screw according to claim 1 and 2 is characterized in that: the head edge (21) of said second helical thread portion (2) is how much shapes of regular polygon.
4. lock screw according to claim 3 is characterized in that: said head edge (21) is positive Hexangular Star.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104250784A CN102588412A (en) | 2012-05-02 | 2012-05-02 | Locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104250784A CN102588412A (en) | 2012-05-02 | 2012-05-02 | Locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588412A true CN102588412A (en) | 2012-07-18 |
Family
ID=46477506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104250784A Pending CN102588412A (en) | 2012-05-02 | 2012-05-02 | Locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990843A (en) * | 2014-05-13 | 2014-08-20 | 繁昌县金科机电科技有限公司 | Knife rest |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333978A (en) * | 1992-05-14 | 1994-08-02 | Valeo Vision | Fastener for securing a lighting or indicating unit on a motor vehicle |
| US5433569A (en) * | 1993-09-02 | 1995-07-18 | Fall; James C. | Screw |
-
2012
- 2012-05-02 CN CN2011104250784A patent/CN102588412A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333978A (en) * | 1992-05-14 | 1994-08-02 | Valeo Vision | Fastener for securing a lighting or indicating unit on a motor vehicle |
| US5433569A (en) * | 1993-09-02 | 1995-07-18 | Fall; James C. | Screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990843A (en) * | 2014-05-13 | 2014-08-20 | 繁昌县金科机电科技有限公司 | Knife rest |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |