CN203906501U - Concrete screw - Google Patents
Concrete screw Download PDFInfo
- Publication number
- CN203906501U CN203906501U CN201420297854.6U CN201420297854U CN203906501U CN 203906501 U CN203906501 U CN 203906501U CN 201420297854 U CN201420297854 U CN 201420297854U CN 203906501 U CN203906501 U CN 203906501U
- Authority
- CN
- China
- Prior art keywords
- thread
- spiral shell
- screw
- screw rod
- facing
- 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
Links
- 239000004568 cement Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 241001014327 Anodontia Species 0.000 claims description 7
- 206010002583 anodontia Diseases 0.000 claims description 7
- 230000005212 anodontia Effects 0.000 claims description 7
- 241001661918 Bartonia Species 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A concrete screw comprises a screw head, a screw rod, a first thread unit and a second thread unit. The screw rod extends from the screw head, and the first thread unit and the second thread unit are annularly arranged on the screw rod in a spaced mode. The first thread unit comprises a first thread. The first thread is provided with a first tooth face and a second tooth face. The first tooth face is in a cambered surface shape. The included angle formed between the second tooth face and the plane perpendicular to the screw rod is smaller than the included angle formed between the first tooth face and the plane perpendicular to the screw rod. The second thread unit comprises a plurality of second threads, the outer diameter of each second thread is smaller than the outer diameter of the first thread, and the tooth bottom diameter of the first thread is smaller than the tooth bottom diameter of each second thread. By means of the design, the first tooth face is in the cambered surface shape, so that the concrete screw cuts a locked object easily, and the effect of saving force application is achieved.
Description
Technical field
The utility model relates to a kind of screw, particularly relate to a kind of for lock cement or concrete material by the CONCRETE SCREWS of closure.
Background technique
In order to reach best locking effect, the form of screw need to being designed by closure for unlike material and characteristic, wherein, for the CONCRETE SCREWS of cement or concrete material of locking in order to reach better locking effect, the design of its screw thread often need to be distinguished to some extent with the screw thread of general screw, to can adapt to cement or the higher material characteristic of concrete hardness.
Consulting Fig. 1, is the CONCRETE SCREWS 1 of tradition use.This CONCRETE SCREWS 1 comprises a spiral shell head 11, and connects the first screw thread 13 that is surrounded on this screw rod 12 from this spiral shell head 11 screw rod 12, with an insertion end 121 away from this spiral shell head 11, and one be surrounded on this screw rod 12 and with this first screw thread 13 the second screw thread 14 separately.Wherein, the external diameter of this second screw thread 14 is the external diameters that are less than this first screw thread 13.
When existing CONCRETE SCREWS 1 locking one cement or concrete material by closure (not shown) time, this first screw thread 13 and this second screw thread 14 can be formed new approaching side to this by closure respectively, existing CONCRETE SCREWS 1 and this are increased by the area of contact between closure, and then improve locking ability.In addition, by the design of the second less screw thread 14 of external diameter, can 1 locking of existing CONCRETE SCREWS this by the process of closure in as buffer area, the screw-in torsion of this existing CONCRETE SCREWS 1 can be reduced, accelerate the speed of locking.
Consult Fig. 2, for TaiWan, China is announced " screw " new patent No. M385613, the screw 2 that it discloses comprise a spiral shell head 21, connect from this spiral shell head 21 and have an insertion end 221 away from this spiral shell head 21 screw rod 22, be surrounded on this screw rod 22 and one first screw thread 23, one second screw thread 24 spaced apart, and one the 3rd screw thread 25.Wherein, this first screw thread 23 has multiple threads 231, and the external diameter width of this second screw thread 24 is the external diameter width that are less than this first screw thread 23, and is greater than the external diameter width of the 3rd screw thread 25.Design, not only can reach effect identical with existing CONCRETE SCREWS 1 whereby, has more promoted cushioning effect with dual setting of this second screw thread 24 and the 3rd screw thread 25.
But, consult Fig. 1 and Fig. 2, no matter be existing CONCRETE SCREWS 1 or existing screw 2, locking concrete or cement material by closure time, in locking process, the surface friction drag being subject to is excessive, can cause existing CONCRETE SCREWS 1 or this screw 2 in the time of construction, to produce the crooked problem of locking direction because balance is not good.In addition, described the first screw thread 13,23, described the second screw thread 14,24, and the shape design of the 3rd screw thread 25, can make this CONCRETE SCREWS 1 or this screw 2 along with the locking degree of depth increases and needs larger screw-in torsion just can overcome increasing frictional force, cause operation to be wasted time and energy.
Model utility content
The purpose of this utility model is to provide a kind of can maintain balance in the time locking, and can promote the CONCRETE SCREWS of operating efficiency.
The utility model CONCRETE SCREWS for be locked in a cement or concrete material by closure, this CONCRETE SCREWS comprises a spiral shell head, and connects screw rod, the spacer ring of this spiral shell head and be located at one first threaded elements and one second threaded elements on this screw rod.
This screw rod comprises the rod body of an extension from this spiral shell head, and one is connected in the flat tapering of this rod body away from one end of this spiral shell head.
This first threaded elements comprise a spiral be located on the rod body of this screw rod and be positioned at this spiral shell head and this flat tapering between the first thread, this first thread has the first facing of a side towards this spiral shell head, and one is crossing with this first facing and towards the second facing of the side in this flat tapering, and this first facing is to stretch out and be arc surfaced from this rod body, the angle that the plane of this second facing this screw stem line vertical with folds, is less than the angle that this first facing and this plane fold.
This second threaded elements comprises that multiple spirals are located at the second thread on the rod body of this screw rod and between between this spiral shell head and this flat tapering, and described the second thread is to arrange with this first thread interval, the external diameter of each the second thread is less than the external diameter of this first thread, and at the bottom of the tooth of this first thread, footpath is to be less than footpath at the bottom of the tooth of described the second thread.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Preferably, aforementioned CONCRETE SCREWS, wherein, the rod body of this screw rod has the anodontia section of this spiral shell head of a connection, and one connect this anodontia section and this flat tapering sealed section, described second thread of the first thread of this first threaded elements and this second threaded elements is arranged at respectively on this sealed section.
Preferably, aforementioned CONCRETE SCREWS, wherein, this spiral shell head comprises a head, and one be connected between this head and this rod body and external diameter is greater than the stopper part of this head, the one side that this stopper part is connected with this rod body has a ring-type ratchet.
Preferably, aforementioned CONCRETE SCREWS, wherein, the number of described the second thread is two.
The beneficial effects of the utility model are: the angle folding with the plane of vertical this screw stem line by this second facing is less than the design of the angle that this first facing and this plane fold, be aided with the mode that this first facing is arc surfaced, this CONCRETE SCREWS can be cut easily by closure.
Brief description of the drawings
Fig. 1 is a side view of the existing CONCRETE SCREWS of explanation;
Fig. 2 is the side view that explanation TaiWan, China is announced the screw that No. M385613 " screw " new patent disclose;
Fig. 3 is a side view of the first preferred embodiment of explanation the utility model CONCRETE SCREWS;
Fig. 4 is a local enlarged side view of aid illustration Fig. 3;
Fig. 5 is in this first preferred embodiment of explanation, a side view of the another kind of mode of a spiral shell head;
Fig. 6 is in this first preferred embodiment of explanation, a side view of the another kind of mode of this spiral shell head;
Fig. 7 is in this first preferred embodiment of explanation, a side view of the another kind of mode of this spiral shell head;
Fig. 8 is a side view of the second preferred embodiment of explanation the utility model CONCRETE SCREWS;
Fig. 9 is a stereogram of aid illustration Fig. 8; And
Figure 10 is a side view of the 3rd preferred embodiment of explanation the utility model CONCRETE SCREWS.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated:
Consult Fig. 3,4, the first preferred embodiment of the utility model CONCRETE SCREWS, for be locked in a cement or concrete material by closure (not shown), this CONCRETE SCREWS 3 comprises a spiral shell head 31, screw rod 32, a spacer ring that connects this spiral shell head 31 is located at one first threaded elements 33 and one second threaded elements 34 on this screw rod 32.
This screw rod 32 comprises that one is connected in the rod body 321 of this spiral shell head 31, and one is connected in this rod body 321 away from one end of this spiral shell head 31 and towards the flat tapering 322 of gradually bringing together away from the direction of this spiral shell head 31.In this preferred embodiment, this spiral shell head 31 can be shape as shown in Figure 3, but not as limit, can be also the shape as shown in Fig. 5, Fig. 6 or Fig. 7, can manufacture difform spiral shell head 31 according to actual demand.
This first threaded elements 33 comprise a whorl be located on the rod body 321 of this screw rod 32 and be positioned at this spiral shell head 31 and this flat tapering 322 between the first thread 331.This first thread 331 is asymmetric tooth, and have one crossing with the rod body 321 of this screw rod 32 and near the first facing 332 of these spiral shell head 31 1 sides, and one with the rod body 321 of this screw rod 32 and this first facing 332 is crossing and near the second facing 333 of these flat tapering 322 1 sides, and this first facing 332 is to stretch out and be arc surfaced from this rod body 321.In addition, the angle α that the plane P of this second facing 333 this screw rod 32 axis L vertical with folds, is less than the angle β that this first facing 332 and this plane P fold.
This second threaded elements 34 comprises that two whorls are located at the second thread 341 on the rod body 321 of this screw rod 32 and between between this spiral shell head 31 and this flat tapering 322, and described the second thread 341 is to arrange with these the first thread 331 intervals, and the outer diameter D 2 of each the second thread 341 is less than the outer diameter D 1 of this first thread 331.In addition, at the bottom of the tooth of described the second thread 341, footpath d2 is greater than footpath d1 at the bottom of the tooth of this first thread 331.
Continuous Fig. 3 and Fig. 4 of consulting, when use, user can be first this by closure on preboring one pre-drilled (not shown), and a locking tool (not shown) and this spiral shell head 31 are joined, the flat tapering 322 of this CONCRETE SCREWS 3 can lock this downwards by closure gradually from this pre-drilled, promptly screws in this by closure.
And when described the second thread 341 and this first thread 331 start to be locked in this by closure in time, because the outer diameter D 2 of described the second thread 341 is less than the outer diameter D 1 of this first thread 331, therefore can be produced the approaching side that is different from this first thread 331 by closure to this, and then increase with this by the area of contact between closure and promote lock effect, and simultaneously for this CONCRETE SCREWS 3 provides the buffer area between between the pitch of this first thread 331, reduce the frictional force producing in locking process and reduce screwing in torsion, make the process of locking more smooth and easy.
By above-mentioned design, the utility model CONCRETE SCREWS 3 has following advantages in the time that reality is used:
(1) be beneficial to cutting hard cement:
The angle α folding with the plane P of vertical this axis L by this second facing 333 is less than the design of the angle β that this first facing 332 folds with the plane P of this vertical this axis L, and be the first facing 332 of arc surfaced, make this CONCRETE SCREWS 3 be easy to cut hard cement, and cause the cement of this first thread 331 and described the second thread 341 peripheries cracked can avoid locking time.
(2) increase locking ability and maintain locking balance:
This CONCRETE SCREWS 3 is in locking process, be different from the outer diameter D 1 of this first thread 331 by the outer diameter D 2 of described the second thread 341, this is formed to another approaching side by closure, this CONCRETE SCREWS 3 and this are increased by the occlusal contact area between closure, and then improve locking ability, and this second thread 341 can assist the firm overall screw of this first thread 331 to expect that with controlling the direction of locking reaches counterbalance effect with the tightness that engages of cement.In addition, are the designs that are arc surfaced by this first facing 332, also can increase bearing capacity and the stretching resistance of this CONCRETE SCREWS 3.
(3) increase pullout forces:
Because footpath d2 at the bottom of the tooth of described the second thread 341 is greater than footpath d1 at the bottom of the tooth of this first thread 331, the utility model CONCRETE SCREWS 3 is locked by after in closure, different by footpath d2, d1 at the bottom of described second thread 341 of spiral spacer and the tooth of this first thread 331, promote the utility model CONCRETE SCREWS 3 with for example, by the clip effect of closure (: concrete), the resistance increment that allows this CONCRETE SCREWS 3 be drawn out, makes these CONCRETE SCREWS 3 difficult drop-offs or unclamps.
Consult Fig. 8 and Fig. 9, for the second preferred embodiment of the utility model CONCRETE SCREWS 3, the places different from this first preferred embodiment are: this spiral shell head 31 comprises a head 311, and one is connected between the rod body 321 of this head 311 and this screw rod 32 and external diameter is greater than the stopper part 312 of this head 311.The one side that this stopper part 312 is connected with the rod body 321 of this screw rod 32 has a ring-type ratchet 313.By the design of this ring-type ratchet 313, the stopper part 312 of this spiral shell head 31 can lock be more firmly established and be incorporated into this by closure, and increase this CONCRETE SCREWS 3 and this is by the combination force between closure.
Consult Figure 10, for the 3rd preferred embodiment of the utility model CONCRETE SCREWS 3, the places different from this first preferred embodiment are: the rod body 321 of this screw rod 32 has the anodontia section 323 of this spiral shell head 31 of a connection, and one connects this anodontia section 323 and this flat tapering 322 sealed section 324.The first thread 331 and described second thread 341 of this second threaded elements 34 of this first threaded elements 33 are arranged at respectively on this sealed section 324, and this sealed section 324 coordinates this pre-drilled to be locked in this by closure.When the flat tapering 322 of this CONCRETE SCREWS 3 locks this downwards by closure gradually from this pre-drilled, this sealed section 324 with this anodontia section 323 promptly screw in this by closure and complete locking this by closure.So while production, as long as coordinate the length of this pre-drilled required locking to manufacture this sealed section 324, do not need this rod body 321 all to make this first threaded elements 33 and these second threaded elements 34, while effectively saving worker and cost of production.
In sum, the angle α that the utility model CONCRETE SCREWS 3 folds with the plane P of vertical this axis L by this second facing 333 is less than the design of the angle β that this first facing 332 and this plane P fold, be aided with the first facing 332 that is arc surfaced, reach and more easily cut hard by the effect of closure, and assisting by described the second thread 341, this CONCRETE SCREWS 3 can reduce screw-in torsion and maintain balance in locking process, and after locking, increase and by the area of contact between closure, promote bearing capacity and the stretching resistance of this CONCRETE SCREWS 3.
Claims (4)
1. a CONCRETE SCREWS, for be locked in a cement or concrete material by closure, this CONCRETE SCREWS comprises a spiral shell head, one screw rod, and one first threaded elements, this screw rod comprises the rod body of an extension from this spiral shell head, and one be connected in the flat tapering of this rod body away from one end of this spiral shell head, this first threaded elements comprise a spiral be located on the rod body of this screw rod and be positioned at this spiral shell head and this flat tapering between the first thread, it is characterized in that: the first thread of this first threaded elements has first facing towards the first side of this spiral shell, and one is crossing with this first facing and towards the second facing of this flat tapering one side, and this first facing is to stretch out and be arc surfaced from this rod body, the angle that the plane of this second facing this screw stem line vertical with folds, be less than the angle that this first facing and this plane fold, this CONCRETE SCREWS also comprises one second threaded elements, this second threaded elements comprises that multiple spirals are located at the second thread on the rod body of this screw rod and between between this spiral shell head and this flat tapering, and described the second thread is to arrange with this first thread interval, the external diameter of each the second thread is less than the external diameter of this first thread, and at the bottom of the tooth of this first thread, footpath is to be less than footpath at the bottom of the tooth of described the second thread.
2. CONCRETE SCREWS as claimed in claim 1, it is characterized in that: the rod body of this screw rod has the anodontia section of this spiral shell head of a connection, and one connect this anodontia section and this flat tapering sealed section, described second thread of the first thread of this first threaded elements and this second threaded elements is arranged at respectively on this sealed section.
3. CONCRETE SCREWS as claimed in claim 1, is characterized in that: this spiral shell head comprises a head, and one be connected between this head and this rod body and external diameter is greater than the stopper part of this head, and the one side that this stopper part is connected with this rod body has a ring-type ratchet.
4. CONCRETE SCREWS as claimed in claim 1, is characterized in that: the number of described the second thread is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297854.6U CN203906501U (en) | 2014-06-05 | 2014-06-05 | Concrete screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297854.6U CN203906501U (en) | 2014-06-05 | 2014-06-05 | Concrete screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906501U true CN203906501U (en) | 2014-10-29 |
Family
ID=51780783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297854.6U Expired - Fee Related CN203906501U (en) | 2014-06-05 | 2014-06-05 | Concrete screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906501U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763065A (en) * | 2016-12-12 | 2017-05-31 | 上海翔锐紧固件有限公司 | A kind of self tapping that can be used for concrete locks screw thread |
| CN114278657A (en) * | 2020-09-26 | 2022-04-05 | 徐国泰 | Anti-drawing low-resistance screw |
-
2014
- 2014-06-05 CN CN201420297854.6U patent/CN203906501U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763065A (en) * | 2016-12-12 | 2017-05-31 | 上海翔锐紧固件有限公司 | A kind of self tapping that can be used for concrete locks screw thread |
| CN114278657A (en) * | 2020-09-26 | 2022-04-05 | 徐国泰 | Anti-drawing low-resistance screw |
| CN114278657B (en) * | 2020-09-26 | 2024-02-20 | 徐国泰 | Drawing-resistant low-resistance screw |
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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 |
Granted publication date: 20141029 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |