CN204921612U - Fasten trapezoidal bolt - Google Patents
Fasten trapezoidal bolt Download PDFInfo
- Publication number
- CN204921612U CN204921612U CN201520638080.3U CN201520638080U CN204921612U CN 204921612 U CN204921612 U CN 204921612U CN 201520638080 U CN201520638080 U CN 201520638080U CN 204921612 U CN204921612 U CN 204921612U
- Authority
- CN
- China
- Prior art keywords
- bolster
- bolt
- screw rod
- bolt head
- trapezoidal
- 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 utility model discloses a fasten trapezoidal bolt, including bolt head, bolster, neck pole and screw rod, the bolt head is connected with the bolster, the bolster is located between bolt head and the neck pole, the neck pole position is equipped with trapezoidal tooth on the screw rod between bolster and screw rod, be equipped with the hexagonal countersunk head on the bolt head, the neck pole is equipped with the chamfer with the screw rod junction, the chamfer angle is 45 degrees, trapezoidal hypotenuse is 14.5 degrees with vertical angular separation on the trapezoidal tooth. The utility model discloses a be connected bolt head and bolster, the bolster lies in between bolt head and the neck pole, and the neck pole position is equipped with trapezoidal tooth on the screw rod between bolster and screw rod, be equipped with the hexagonal countersunk head on the bolt head, and trapezoidal hypotenuse is 14.5 degrees with vertical angular separation on the trapezoidal tooth, can make the bolted connection fastening have sufficient intensity, and is simultaneously easy to assemble, reduction in production cost in the time of improve equipment life.
Description
[technical field]
The utility model relates to the technical field of bolt, particularly the technical field of fastening trapezoidal bolt.
[background technique]
Along with social development, various equipment is applied to different industries, some important equipment, also different Special use performances is had, just need to use different special entities and component to reach specific requirement, in such devices, the use of fastening piece is very important, and be conventionally used to and connect fastening component, great majority mainly use bolt to connect, and the screw thread of most bolt is all V thread screw, but the use of V thread screw under some particular job situation, do not reach overall requirement, the suffered stress intensity of bolt is inadequate, the method overcome adds king-bolt exactly, use special manufactured materials, thus improve the cost of equipment, through practical studies, trapezoidal thread when fastening bulk strength sorrow in V thread screw.And also have some bolts to need when dismounting to turn with spanner, and because position is inappropriate, extremely inconvenient dismounting, part bolt is also had to should be inadequate with the area of contact of equipment, and make the localized stress on equipment bigger than normal, make equipment produce Light deformation, reduce working life.
[model utility content]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of fastening trapezoidal bolt, bolt can be made to connect and fasteningly have enough intensity, simultaneously conveniently installs, and reduces cost of production while improving service life of equipment.
For achieving the above object, the utility model proposes a kind of fastening trapezoidal bolt, comprise bolt head, bolster, neck bar and screw rod, described bolt head is connected with bolster, and described bolster is between bolt H&N bar, described neck bar is between bolster and screw rod, screw rod is provided with trapezoidal tooth, and described bolt head is provided with hexagonal countersunk head, and described neck bar and screw rod joint are provided with chamfering, described chamfer angle is 45 degree, and described trapezoidal tooth upper trapezoid hypotenuse and vertical direction angle are 14.5 degree.
As preferably, described hexagonal countersunk head is located at bolt head end face central position, and the hexagonal countersunk head degree of depth is 9.5mm.
As preferably, described bolt head circle end face place is provided with bull nose, and described round radius is 0.8mm.
As preferably, described bolster diameter is greater than bolt head and neck shank diameter, and bolster and bolt head and neck bar connecting end surface cylindrical place are equipped with rounding, and described rounding radii is 0.8mm.
As preferably, described neck bar and bolster joint are provided with interior rounding, and neck shank diameter is less than screw rod central diameter, and neck shank diameter is greater than screw rod path.
The beneficial effects of the utility model: the utility model is by being connected bolt head with bolster, bolster is between bolt H&N bar, neck bar is between bolster and screw rod, screw rod is provided with trapezoidal tooth, bolt head is provided with hexagonal countersunk head, and trapezoidal tooth upper trapezoid hypotenuse and vertical direction angle are 14.5 degree, bolt can be made to connect and fasteningly have enough intensity, convenient installation, reduces cost of production while improving service life of equipment simultaneously.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the plan view of a kind of fastening trapezoidal bolt of the utility model;
Fig. 2 is the side view of a kind of fastening trapezoidal bolt of the utility model;
Fig. 3 is the enlarged partial sectional view of a kind of fastening trapezoidal bolt of the utility model.
In figure: rounding, 4-screw rod, the trapezoidal tooth of 41-in 1-bolt head, 11-bull nose, 12-hexagonal countersunk head, 2-bolster, 21-rounding, 3-neck bar, 31-chamfering, 32-.
[embodiment]
Consult Fig. 1, Fig. 2 and Fig. 3, a kind of fastening trapezoidal bolt of the utility model, comprise bolt head 1, bolster 2, neck bar 3 and screw rod 4, described bolt head 1 is connected with bolster 2, described bolster 2 is between bolt head 1 and neck bar 3, described neck bar 3 is between bolster 2 and screw rod 4, screw rod 4 is provided with trapezoidal tooth 41, described bolt head 1 is provided with hexagonal countersunk head 12, described neck bar 3 is provided with chamfering 31 with screw rod 4 joint, described chamfering 31 angle is 45 degree, and described trapezoidal tooth 41 upper trapezoid hypotenuse and vertical direction angle are 14.5 degree; Described hexagonal countersunk head 12 is located at bolt head 1 end face central position, and hexagonal countersunk head 12 degree of depth is 9.5mm; Described bolt head 1 circle end face place is provided with bull nose 11, and described bull nose 11 radius is 0.8mm; Described bolster 2 diameter is greater than bolt head 1 and neck bar 3 diameter, and bolster 2 is equipped with rounding 21 with bolt head 1 and neck bar 3 connecting end surface cylindrical place, and described rounding 21 radius is 0.8mm; Described neck bar 3 is provided with interior rounding 32 with bolster 2 joint, and neck bar 3 diameter is less than screw rod 4 central diameter, and neck bar 3 diameter is greater than screw rod 4 path.
A kind of fastening trapezoidal bolt of the utility model, by bolt head is connected with bolster, bolster is between bolt H&N bar, neck bar is between bolster and screw rod, and screw rod is provided with trapezoidal tooth, and bolt head is provided with hexagonal countersunk head, trapezoidal tooth upper trapezoid hypotenuse and vertical direction angle are 14.5 degree, bolt can be made to connect and fastening to there is enough intensity, simultaneously conveniently to install, while improving service life of equipment, reduce cost of production.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (5)
1. a fastening trapezoidal bolt, it is characterized in that: comprise bolt head (1), bolster (2), neck bar (3) and screw rod (4), described bolt head (1) is connected with bolster (2), described bolster (2) is positioned between bolt head (1) and neck bar (3), described neck bar (3) is positioned between bolster (2) and screw rod (4), screw rod (4) is provided with trapezoidal tooth (41), described bolt head (1) is provided with hexagonal countersunk head (12), described neck bar (3) and screw rod (4) joint are provided with chamfering (31), described chamfering (31) angle is 45 degree, described trapezoidal tooth (41) upper trapezoid hypotenuse and vertical direction angle are 14.5 degree.
2. a kind of fastening trapezoidal bolt as claimed in claim 1, is characterized in that: described hexagonal countersunk head (12) is located at bolt head (1) end face central position, and hexagonal countersunk head (12) degree of depth is 9.5mm.
3. a kind of fastening trapezoidal bolt as claimed in claim 1, it is characterized in that: described bolt head (1) circle end face place is provided with bull nose (11), described bull nose (11) radius is 0.8mm.
4. a kind of fastening trapezoidal bolt as claimed in claim 1, it is characterized in that: described bolster (2) diameter is greater than bolt head (1) and neck bar (3) diameter, bolster (2) is equipped with rounding (21) with bolt head (1) and neck bar (3) connecting end surface cylindrical place, and described rounding (21) radius is 0.8mm.
5. a kind of fastening trapezoidal bolt as claimed in claim 1, it is characterized in that: described neck bar (3) and bolster (2) joint are provided with interior rounding (32), neck bar (3) diameter is less than screw rod (4) central diameter, and neck bar (3) diameter is greater than screw rod (4) path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638080.3U CN204921612U (en) | 2015-08-21 | 2015-08-21 | Fasten trapezoidal bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638080.3U CN204921612U (en) | 2015-08-21 | 2015-08-21 | Fasten trapezoidal bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921612U true CN204921612U (en) | 2015-12-30 |
Family
ID=54970743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638080.3U Active CN204921612U (en) | 2015-08-21 | 2015-08-21 | Fasten trapezoidal bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921612U (en) |
-
2015
- 2015-08-21 CN CN201520638080.3U patent/CN204921612U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |