CN201723558U - Screw fastening structure - Google Patents
Screw fastening structure Download PDFInfo
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- CN201723558U CN201723558U CN2010202325240U CN201020232524U CN201723558U CN 201723558 U CN201723558 U CN 201723558U CN 2010202325240 U CN2010202325240 U CN 2010202325240U CN 201020232524 U CN201020232524 U CN 201020232524U CN 201723558 U CN201723558 U CN 201723558U
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- indentation
- screw
- screw rod
- fastening structure
- hole
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Abstract
The utility model discloses a screw fastening structure. The screw fastening structure comprises a screw and a part, wherein the screw comprises a head part and a screw rod connected with the head part; the screw rod is provided with an external thread; the part is provided with a through hole or a screw hole; the screw rod is inserted into the through hole or the screw hole of the part; a joint face between the head part, and the screw rod is provided with a first tooth mark which extends along the radial direction of the screw rod; and a contact surface between the part and the head part is provided with a fourth tooth mark which is engaged with the first tooth mark. When the screw is inserted into the through hole or the screw hole of the part, the first tooth mark is engaged with the fourth tooth mark, namely, the screw is clamped with the part through tooth mark engagement, so that the screw does not rotate easily and does not become loose even when a machine or equipment provided with the part vibrates severely. Therefore, the screw fastening structure has the advantages of improving the reliability, firmness and stability of part installation and reducing the repair and maintenance workloads of the machine or the equipment, along with simple structure.
Description
Technical field
The utility model relates to a kind of fastener constructions, particularly relates to a kind of screw fastening structure.
Background technique
Screw is used for the component of fastening apparatus and instrument etc. as a kind of fastening piece.The screw of prior art generally comprises head and the screw rod that is connected with head, and screw rod has outside thread.When if the part that is fixed has tapped hole, the screw rod of screw is fixing by cooperating with this tapped hole, can not need this moment nut to cooperate; During tapped hole, it is fixing to need nut to cooperate, and after the screw rod of screw passes the part through hole, fixes with the screw-internal thread fit of nut if the part that is fixed has through hole.
But when this screw is used for fixing the part of machine, equipment or the traffic tool, because these machines, equipment or transport facility can produce vibration when operation, therefore screw is easy in vibration loosening gradually, make at last by the fixing part of this screw and come off, and then cause the fault of machine, equipment or the traffic tool, influenced soundness and stability that screw connects.
The model utility content
The purpose of this utility model be to avoid deficiency of the prior art and provide a kind of simple in structure, be connected firmly, be difficult for loosening screw fastening structure.
The purpose of this utility model realizes by following technical measures:
A kind of screw fastening structure, comprise screw and part, described screw comprises head and the screw rod that is connected with described head, described screw rod has outside thread, described part has through hole or screw, described screw rod is arranged in the through hole or screw of described part, and first indentation is extended in having along the radial direction of described screw rod with described screw rod junction surface of described head, described part be provided with the 4th indentation that is meshed with described first indentation with described head surface of contact.
Preferably, above-mentioned screw rod is socketed with compression spring, the two sides of described compression spring is respectively arranged with second indentation and the 3rd indentation, described second indentation is arranged at the surface of contact of described compression spring and described head, and described second indentation is meshed with described first indentation, and described the 3rd indentation is meshed with described the 4th indentation.
A kind of preferred implementation as a kind of screw fastening structure of the present utility model: the longitudinal section of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation is arc.
As the another kind of preferred implementation of a kind of screw fastening structure of the present utility model, the longitudinal section of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation is an isosceles triangle.
As the further preferred implementation of a kind of screw fastening structure of the present utility model, the longitudinal section of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation is an equilateral triangle.
Preferably, the height of the longitudinal section of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation is respectively less than the externally threaded pitch of described screw rod.
Preferably, the height of the longitudinal section of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation is respectively smaller or equal to 1/4th of the externally threaded pitch of described screw rod, more than or equal to the sixth of the externally threaded pitch of described screw rod.
More preferably, the height of the longitudinal section of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation be respectively described screw rod externally threaded pitch 1/5th.
Further, the number of above-mentioned first indentation, second indentation, the 3rd indentation and the 4th indentation be more than or equal to 36, smaller or equal to 72.。
The utility model compared with prior art has the following advantages: because the having along the radial direction of screw rod with the screw rod junction surface of head of screw extended first indentation, described part be provided with the 4th indentation that is meshed with described first indentation with described head surface of contact, it is simple in structure; In the time of in this screw is inserted in part through hole or screw, first indentation is meshed with the 4th indentation, being equivalent to screw and part is connected together by the indentation engagement, make screw be difficult for rotation, even the machine or the equipment high vibration of this part are installed, screw can not become flexible yet, and therefore screw fastening structure of the present utility model has strengthened reliability, soundness and stability that part is installed, has reduced the workload of the maintenance and the maintenance of machine or equipment.
Description of drawings
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in the accompanying drawing does not constitute any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of mode of execution of a kind of screw fastening structure of the utility model;
Fig. 2 is the structural representation of the another kind of mode of execution of a kind of screw fastening structure of the utility model.
Embodiment
With accompanying drawing the utility model is further described with the following Examples:
As depicted in figs. 1 and 2, a kind of screw fastening structure, comprise screw 10 and part 20, described screw 10 comprises head 11 and the screw rod 12 that is connected with described head 11, described screw rod 12 has outside thread 13, described part 20 has through hole or screw 21, described screw rod 12 is arranged in the through hole or screw 21 of described part 20, first indentation 30 is extended in having along the radial direction of described screw rod 12 with described screw rod 12 junction surfaces of described head 11, described part 20 be provided with the 4th indentation 40 that is meshed with described first indentation 30 with described head 11 surface of contact.
Because the having along the radial direction of screw rod 12 with screw rod 12 junction surfaces of head 11 of screw 10 extended first indentation 30, described part 20 be provided with the 4th indentation 40 that is meshed with described first indentation 30 with described head 11 surface of contact, it is simple in structure; When this screw 10 screws in and is inserted in part 20 through holes or the screw 21, first indentation 30 is meshed with the 4th indentation 40, being equivalent to screw 10 is connected together by the indentation engagement with part 20, make screw 10 be difficult for rotation, even the machine or the equipment high vibration of this part 20 are installed, screw 10 can not become flexible yet, and therefore screw fastening structure of the present utility model has strengthened reliability, soundness and stability that part 20 is installed, has reduced the workload of the maintenance and the maintenance of machine or equipment.
A kind of better embodiment of a kind of screw fastening structure of the present utility model, as shown in Figure 1, the longitudinal section of first indentation 30 and described the 4th indentation 40 can be for arc, indentation is set to arc, help processing, and make the outside thread 13 of screw 10 screw rods 12 cooperate when rotating first indentation 30 and the 40 easier engagements of the 4th indentation with part 20 screws 21, and screw 10 can more deep, more closely be screwed in part 20 screws 21, thereby can prevent that screw 10 from axially rotating, becoming flexible.
The another kind of better embodiment of a kind of screw fastening structure of the present utility model, as shown in Figure 2, the longitudinal section of first indentation 30 and described the 4th indentation 40 can be isosceles triangle or equilateral triangle.Indentation is set to isosceles triangle or equilateral triangle, help processing, and make the outside thread 13 of screw 10 screw rods 12 cooperate with part 20 screws 21 when rotating, first indentation 30 and the 40 easier engagements of the 4th indentation, thus can stop screw 10 axially to rotate, become flexible.
As a kind of improvement of the present utility model, as depicted in figs. 1 and 2, screw rod 12 is socketed with compression spring 50, the two sides of described compression spring 50 is respectively arranged with second indentation 60 and the 3rd indentation 70, described second indentation 60 is arranged at the surface of contact of described compression spring 50 and described head 11, and described second indentation 60 is meshed with described first indentation 30, and described the 3rd indentation 70 is meshed with described the 4th indentation 40.Because compression spring 50 is made for elastic material, have elasticity, so socket compression spring 50 can increase the degree of tightening of screw 10.On compression spring 50 two sides the 3rd indentation 70 and the 4th indentation 40 that is meshed with first indentation 30 and the 4th indentation 40 respectively is set, prevents that screw 10 is loosening after screw 10 is tightened.
Preferably, as shown in Figure 1, the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and described the 4th indentation 40 can be for arc, indentation is set to arc, help processing, and make the outside thread 13 of screw 10 screw rods 12 cooperate with part 20 screws 21 when rotating, easier engagement between first indentation 30 and second indentation 60 and the 3rd indentation 70 and the 4th indentation 40, and screw 10 can more deep, more closely be screwed in part 20 screws 21, thereby can prevent that screw 10 from axially rotating, becoming flexible.
Another preferably, as shown in Figure 2, the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 can be isosceles triangle or equilateral triangle.Indentation is set to isosceles triangle or equilateral triangle, help processing, and make the outside thread 13 of screw 10 screw rods 12 cooperate with part 20 screws 21 when rotating, easier engagement between first indentation 30 and second indentation 60 and the 3rd indentation 70 and the 4th indentation 40, thus can stop screw 10 axially to rotate, become flexible.
Preferably, the height of the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 is respectively less than the pitch of the outside thread 13 of described screw rod 12.Because the height of indentation and the degree of tightening of screw 10 are inversely proportional to, promptly the indentation height is big more, and the degree of tightening of screw 10 is more little.Therefore, the height of the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 can guarantee the 10 tight whiles of screw less than the pitch of the outside thread 13 of described screw rod 12, makes screw 10 have bigger degree of tightening.
Preferably, the height of the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 is respectively smaller or equal to 1/4th of the pitch of the outside thread 13 of described screw rod 12, more than or equal to the sixth of the externally threaded pitch of described screw rod.
Preferably, the height of the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 be respectively described screw rod 12 outside thread 13 pitch 1/5th.Certainly, also can select the height of the longitudinal section of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 according to actual needs.The height of first indentation 30, second indentation 60, the 3rd indentation 70 and the 4th indentation 40 can be identical, also can be inequality.
The number of described first indentation, second indentation, the 3rd indentation and the 4th indentation can be provided with as required, an embodiment of the present utility model with the number of described first indentation, second indentation, the 3rd indentation and the 4th indentation all be set to into more than or equal to 36, smaller or equal to 72.
Should be noted that at last; above embodiment is only in order to the explanation the technical solution of the utility model; but not to the restriction of the utility model protection domain; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the essence and the scope of technical solutions of the utility model.
Claims (9)
1. screw fastening structure, comprise screw and part, described screw comprises head and the screw rod that is connected with described head, described screw rod has outside thread, described part has through hole or screw, described screw rod is arranged in the through hole or screw of described part, it is characterized in that: first indentation is extended in having along the radial direction of described screw rod with described screw rod junction surface of described head, described part be provided with the 4th indentation that is meshed with described first indentation with described head surface of contact.
2. a kind of screw fastening structure according to claim 1, it is characterized in that: described screw rod is socketed with compression spring, the two sides of described compression spring is respectively arranged with second indentation and the 3rd indentation, described second indentation is arranged at the surface of contact of described compression spring and described head, and described second indentation is meshed with described first indentation, and described the 3rd indentation is meshed with described the 4th indentation.
3. a kind of screw fastening structure according to claim 2 is characterized in that: the longitudinal section of described first indentation, second indentation, the 3rd indentation and the 4th indentation is arc.
4. a kind of screw fastening structure according to claim 2 is characterized in that: the longitudinal section of described first indentation, second indentation, the 3rd indentation and the 4th indentation is an isosceles triangle.
5. a kind of screw fastening structure according to claim 2 is characterized in that: the longitudinal section of described first indentation, second indentation, the 3rd indentation and the 4th indentation is an equilateral triangle.
6. according to claim 3 or 4 or 5 described a kind of screw fastening structures, it is characterized in that: the height of the longitudinal section of described first indentation, second indentation, the 3rd indentation and the 4th indentation is respectively less than the externally threaded pitch of described screw rod.
7. according to claim 3 or 4 or 5 described a kind of screw fastening structures, it is characterized in that: the height of the longitudinal section of described first indentation, second indentation, the 3rd indentation and the 4th indentation is respectively smaller or equal to 1/4th of the externally threaded pitch of described screw rod, more than or equal to the sixth of the externally threaded pitch of described screw rod.
8. a kind of screw fastening structure according to claim 7 is characterized in that: the height of the longitudinal section of described first indentation, second indentation, the 3rd indentation and the 4th indentation be respectively described screw rod externally threaded pitch 1/5th.
9. a kind of screw fastening structure according to claim 6 is characterized in that: the number of described first indentation, second indentation, the 3rd indentation and the 4th indentation for more than or equal to 36, smaller or equal to 72.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202325240U CN201723558U (en) | 2010-06-21 | 2010-06-21 | Screw fastening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202325240U CN201723558U (en) | 2010-06-21 | 2010-06-21 | Screw fastening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723558U true CN201723558U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202325240U Expired - Fee Related CN201723558U (en) | 2010-06-21 | 2010-06-21 | Screw fastening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723558U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202199A (en) * | 2017-06-08 | 2017-09-26 | 五冶集团上海有限公司 | The built-in type bearing and its installation method of a kind of cable bearer |
| CN107906107A (en) * | 2017-11-24 | 2018-04-13 | 成都新力紧科技有限公司 | For building the locking device and locking mechanism of electromechanical installation hanger system |
| CN113700721A (en) * | 2021-09-14 | 2021-11-26 | 赵小兵 | Anti-loose self-tapping screw |
-
2010
- 2010-06-21 CN CN2010202325240U patent/CN201723558U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202199A (en) * | 2017-06-08 | 2017-09-26 | 五冶集团上海有限公司 | The built-in type bearing and its installation method of a kind of cable bearer |
| CN107906107A (en) * | 2017-11-24 | 2018-04-13 | 成都新力紧科技有限公司 | For building the locking device and locking mechanism of electromechanical installation hanger system |
| CN113700721A (en) * | 2021-09-14 | 2021-11-26 | 赵小兵 | Anti-loose self-tapping screw |
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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: 20110126 Termination date: 20120621 |