CN204025277U - A kind of self tapping screw that is applicable to the connection of soft plastic material - Google Patents
A kind of self tapping screw that is applicable to the connection of soft plastic material Download PDFInfo
- Publication number
- CN204025277U CN204025277U CN201420322174.5U CN201420322174U CN204025277U CN 204025277 U CN204025277 U CN 204025277U CN 201420322174 U CN201420322174 U CN 201420322174U CN 204025277 U CN204025277 U CN 204025277U
- Authority
- CN
- China
- Prior art keywords
- thread forming
- helical pitch
- screw
- screw rod
- plastic material
- 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 - Lifetime
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 17
- 239000004033 plastic Substances 0.000 title claims abstract description 17
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title claims abstract description 15
- 230000002459 sustained effect Effects 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Connection Of Plates (AREA)
Abstract
The utility model discloses a kind of self tapping screw that soft plastic material connects that is applicable to, screw surface is provided with the first Thread Forming TF, in the flight pitch of the first Thread Forming TF, form the second Thread Forming TF, the first Thread Forming TF and the second Thread Forming TF form the first helical pitch end and the second helical pitch end in screw rod one end, the first helical pitch end and the second helical pitch end are positioned at the sustained height on screw rod, the end of the first helical pitch end and the second helical pitch end all forms curved edge, the first Thread Forming TF is identical all the time with the pitch between the second Thread Forming TF, product beneficial effect is: the screw-threaded coupling power of two-wire Thread Forming TF with stop the screw-in moment acting in conjunction into groove, effectively prevent thread looseness, the problem such as come off, and can repeated disassembled and assembled use the assembling number of times of self tapping screw while having improved soft plastic material.
Description
Technical field
The utility model relates to the technical field of self tapping screw, specifically a kind of self tapping screw that soft plastic material connects, particularly its exterior mechanical structure of being applicable to.
Background technique
Traditional self-tapping screw structure, adopting single thread, thread root is the locking of planar end surface form self tapping, easily loosening under external force reciprocating, while being particularly applied in soft plastic material, be not easy to control screw-in moment, while being screwed into the end, feel is still low weight, wayward.Almost identical position rotates repeatedly, and smear metal plastics are easy to destroy screw hole (post) and cause stripped thread, causes locking to be lost efficacy.
Model utility content
The purpose of this utility model is to provide a kind of self tapping screw that soft plastic material connects that is applicable to, and it has adopted two screw-threaded coupling forms and has stopped into groove profile of tooth fastening structure, has effectively increased screw-threaded coupling power, controls and screws in moment.Effectively prevent that screw thread is loosening and bolt column is damaged, thereby avoid locking to lose efficacy, overcome the shortcoming and defect existing in prior art.
To achieve these goals, the technical solution of the utility model is: a kind of self tapping screw that is applicable to the connection of soft plastic material, it comprises screw rod, it is characterized in that: described screw surface is provided with the first Thread Forming TF, in the flight pitch of the first Thread Forming TF, form the second Thread Forming TF, the first Thread Forming TF and the second Thread Forming TF form the first helical pitch end and the second helical pitch end in screw rod one end, the first helical pitch end and the second helical pitch end are positioned at the sustained height on screw rod, the end of the first helical pitch end and the second helical pitch end all forms curved edge, the first Thread Forming TF is identical all the time with the pitch between the second Thread Forming TF, the screw rod the other end forms circular spiral shell head, the external diameter of this circle spiral shell head is greater than the external diameter of bottom Thread Forming TF, the upper surface of this circle spiral shell head forms " H " shape or two symmetrical vee gutters, the annular surface place of circular spiral shell head bottom is provided with stopping into teeth groove of annular distribution, the end face of screw rod one end is plane.
The utility model discloses a kind of self tapping screw that soft plastic material connects that is applicable to, it adopts two screw thread self tappings, has increased coupling mechanism force; The end face of circular spiral shell head adopts profile of tooth to stop into groove, while contacting with soft plastic material matrix surface, stop into the saw shape tooth on groove and on soft plastic material surface, cutting under the effect of screwing force, enter matrix surface, greatly increase screw and screwed in moment, stop screw excessively to screw in, cause destroying the plastic construction of screw hole (post).This self tapping screw can repeated disassembled and assembled be used, and can not lose efficacy because of stripped thread.Beneficial effect is: the screw-threaded coupling power of two-wire Thread Forming TF with stop the screw-in moment acting in conjunction into groove, the problem such as effectively prevent thread looseness, come off; And can repeated disassembled and assembled use the assembling number of times of self tapping screw while having improved soft plastic material.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model stereogram.
Embodiment
With reference to the accompanying drawings, the utility model is further described.
The utility model is a kind of self tapping screw that soft plastic material connects that is applicable to, as shown in fig. 1, it mainly comprises screw rod 1, it is different from prior art and is: described screw rod 1 surface is provided with the first Thread Forming TF 2, in the flight pitch of the first Thread Forming TF 2, form the second Thread Forming TF 3, the first Thread Forming TF 2 and the second Thread Forming TF 3 form the first helical pitch end 4 and the second helical pitch end 5 in screw rod 1 one end, the first helical pitch end 4 and the second helical pitch end 5 are positioned at the sustained height on screw rod 1, the end of the first helical pitch end 4 and the second helical pitch end 5 all forms curved edge 6, the first Thread Forming TF 2 is identical all the time with the pitch between the second Thread Forming TF 3, screw rod 1 the other end forms circular spiral shell head 7, the external diameter of this circle spiral shell head 7 is greater than the external diameter of bottom Thread Forming TF, the upper surface of this circle spiral shell head 7 forms " H " shape groove 11 or two symmetrical vee gutters, need the dismounting of special tool ability, prevent that layman from opening voluntarily, the annular surface place of circular spiral shell head 7 bottoms is provided with stopping into teeth groove 8 of annular distribution, the end face of screw rod 1 one end is plane 9.
In the specific implementation, described stopping between the teeth of teeth groove 8 forms subtriangular teeth groove 10.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. one kind is applicable to the self tapping screw that soft plastic material connects, it comprises screw rod (1), it is characterized in that: described screw rod (1) surface is provided with the first Thread Forming TF (2), in the flight pitch of the first Thread Forming TF (2), form the second Thread Forming TF (3), the first Thread Forming TF (2) forms the first helical pitch end (4) and the second helical pitch end (5) with the second Thread Forming TF (3) in screw rod (1) one end, the first helical pitch end (4) and the second helical pitch end (5) are positioned at the sustained height on screw rod (1), the end of the first helical pitch end (4) and the second helical pitch end (5) all forms curved edge (6), the first Thread Forming TF (2) is identical all the time with the pitch between the second Thread Forming TF (3), screw rod (1) the other end forms circular spiral shell head (7), the external diameter of this circle spiral shell head (7) is greater than the external diameter of bottom Thread Forming TF, the upper surface of this circle spiral shell head (7) forms " H " shape groove (11) or two symmetrical vee gutters, the annular surface place of circular spiral shell head (7) bottom is provided with stopping into teeth groove (8) of annular distribution, the end face of screw rod (1) one end is plane (9).
2. a kind of self tapping screw that soft plastic material connects that is applicable to according to claim 1, is characterized in that: described stopping into forming subtriangular teeth groove (10) between the teeth of teeth groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322174.5U CN204025277U (en) | 2014-06-17 | 2014-06-17 | A kind of self tapping screw that is applicable to the connection of soft plastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322174.5U CN204025277U (en) | 2014-06-17 | 2014-06-17 | A kind of self tapping screw that is applicable to the connection of soft plastic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025277U true CN204025277U (en) | 2014-12-17 |
Family
ID=52065148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420322174.5U Expired - Lifetime CN204025277U (en) | 2014-06-17 | 2014-06-17 | A kind of self tapping screw that is applicable to the connection of soft plastic material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204025277U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006050A (en) * | 2014-06-17 | 2014-08-27 | 飞雕电器集团有限公司 | Self-tapping screw suitable for soft plastic material connection |
| CN108779794A (en) * | 2016-01-12 | 2018-11-09 | Ejot 有限责任公司 | A kind of tightening member |
-
2014
- 2014-06-17 CN CN201420322174.5U patent/CN204025277U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006050A (en) * | 2014-06-17 | 2014-08-27 | 飞雕电器集团有限公司 | Self-tapping screw suitable for soft plastic material connection |
| CN108779794A (en) * | 2016-01-12 | 2018-11-09 | Ejot 有限责任公司 | A kind of tightening member |
| CN108779794B (en) * | 2016-01-12 | 2021-06-08 | Ejot 有限责任公司 | Fastening element |
| US11181139B2 (en) | 2016-01-12 | 2021-11-23 | Ejot Gmbh & Co. Kg | Securing element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |