CN201786882U - Circular flat-bottomed flange bolt with inner and outer pentagons - Google Patents
Circular flat-bottomed flange bolt with inner and outer pentagons Download PDFInfo
- Publication number
- CN201786882U CN201786882U CN2010202905231U CN201020290523U CN201786882U CN 201786882 U CN201786882 U CN 201786882U CN 2010202905231 U CN2010202905231 U CN 2010202905231U CN 201020290523 U CN201020290523 U CN 201020290523U CN 201786882 U CN201786882 U CN 201786882U
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- CN
- China
- Prior art keywords
- circular flat
- jiaos
- rod
- pentagons
- bar head
- 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
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Abstract
A circular flat-bottomed flange bolt with an inner and an outer pentagons comprises a main body (1); the main body (1) comprises a rod head (1.1), a rod body (1.2) and a flange plate (1.3) formed at the lower end of the rod head (1.1); threads (1.2.1) are formed on the outer circumferential surface of the rod body (1.2); the threads (1.2.1) adopt half threads; the half threads are formed at the lower middle end of the rod body (1.2); the flange plate (1.3) adopts a circular flat-bottomed flange plate; the rod head (1.1) adopts a pentangular rod head; a pentangular inner hole (1.1.1) is axially formed in the pentangular rod head; and a through hole (1.4) communicated with the pentangular inner hole (1.1.1) is axially formed in the main body (1). The circular flat-bottomed flange bolt with the inner and the outer pentagons which is combined with a wrench has low probability of slipping. Besides, the circular flat-bottomed flange bolt with the inner and the outer pentagons has lower material consumption and lighter weight.
Description
Technical field:
The utility model relates to fastener areas, especially a kind of inside and outside five jiaos of circular flat bottom flange bolts.
Background technique:
The flange plate that flange bolt generally comprises bar head, the body of rod and is formed on bar head lower end, the outer peripheral surface of the described body of rod is provided with screw thread.At present, the bar head of the flange bolt of prior art is generally hexagonal bar head, and when with supporting wrench operated with it, because spanner and hexagonal bar head have only two surface of contact, and these two surface of contact are parallel to each other, and during operation, spanner is easy to skid.Though be provided with hexagonal blind hole vertically in addition in the hexagonal bar head of some flange bolt, when using the wrench operated that matches with the hexagonal blind hole, spanner also skids easily.Secondly the flange bolt of prior art is generally solid bolt, and relatively consumptive material is also heavier after the moulding.
The model utility content:
The technical problems to be solved in the utility model is: when the supporting use of a kind of one side and spanner is provided, be difficult for skidding, relatively economize material on the other hand, inside and outside five jiaos of circular flat bottom flange bolts that weight is low weight again.
For solving the problems of the technologies described above, the utility model adopts a kind of so inside and outside five jiaos of circular flat bottom flange bolts: it comprises body, described body is by the bar head, the body of rod and the flange plate formation that is formed on bar head lower end, the outer peripheral surface of the described body of rod is provided with screw thread, described screw thread is a partial thread, this partial thread is arranged on the middle lower end of the body of rod, described flange plate is the circular flat bottom flange plate, described bar head is five angular pole heads, be provided with five jiaos of endoporus vertically in this five angular poles head, be provided with the through hole that is connected with five jiaos of endoporus in the described body, this through hole is along the axial setting of body.
After adopting above structure, the utility model compared with prior art, have the following advantages: because the bar head of inside and outside five jiaos of circular flat bottom flange bolts of the present utility model is five angular pole heads, when using supporting with it wrench operated, this spanner has four surface of contact that link to each other successively and be not parallel to each other with the bar head, be equivalent to spanner and hold the bar head tightly, operating is difficult for skidding.In addition owing to five jiaos of endoporus that are provided with in this five angular poles head vertically, when using the wrench operated that matches with five jiaos of endoporus inside and outside five jiaos of circular flat bottom flange bolts of the present utility model, under the situation of circumcircle with same diameter, the length of side of five jiaos of endoporus can be greater than the length of side of hexagonal blind hole, when spanner rotates like this, resistance is bigger, and the probability that skids is just littler, that is to say to be difficult for skidding.Secondly owing to be provided with the through hole that is connected with five jiaos of endoporus in the body, this through hole is along the axial setting of body, and material has been saved in the setting of through hole greatly, makes the inside and outside five jiaos of circular flat bottom flange bolts after the moulding also low weight.
Description of drawings:
Fig. 1 is the structural representation of inside and outside five jiaos of circular flat bottom flange bolts of the present utility model.
Fig. 2 is the sectional structure schematic representation of inside and outside five jiaos of circular flat bottom flange bolts of the present utility model along the straight line A-A among Fig. 1.
Fig. 3 is that the B of the inside and outside five jiaos of circular flat bottom flange bolts shown in Fig. 1 is to structural representation.
Shown in the figure: 1, body, 1.1, the bar head, 1.1.1, five jiaos of endoporus, 1.2, the body of rod, 1.2.1, screw thread, 1.3, flange plate, 1.4, through hole.
Embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 to Figure 3, inside and outside five jiaos of circular flat bottom flange bolts of the present utility model, it comprises body 1, described body 1 is made of bar head 1.1, the body of rod 1.2 and the flange plate 1.3 that is formed on bar head 1.1 lower ends.The outer peripheral surface of the described body of rod 1.2 is provided with screw thread 1.2.1, and described screw thread 1.2.1 is a partial thread, and this partial thread is arranged on the middle lower end of the body of rod 1.2.Described flange plate 1.3 is the circular flat bottom flange plate.Described bar head 1.1 is five angular pole heads, is provided with five jiaos of endoporus 1.1.1 vertically in this five angular poles head.Be provided with the through hole 1.4 that is connected with five jiaos of endoporus 1.1.1 in the described body 1, this through hole 1.4 is along the axial setting of body 1.
Inside and outside five jiaos of circular flat bottom flange bolts of the present utility model, because the bar head of inside and outside five jiaos of circular flat bottom flange bolts of the present utility model is five angular pole heads, when using supporting with it wrench operated, this spanner has four surface of contact that link to each other successively and be not parallel to each other with the bar head, be equivalent to spanner and hold the bar head tightly, operating is difficult for skidding.In addition owing to five jiaos of endoporus that are provided with in this five angular poles head vertically, when using the wrench operated that matches with five jiaos of endoporus inside and outside five jiaos of circular flat bottom flange bolts of the present utility model, under the situation of circumcircle with same diameter, the length of side of five jiaos of endoporus can be greater than the length of side of hexagonal blind hole, when spanner rotates like this, resistance is bigger, and the probability that skids is just littler, that is to say to be difficult for skidding.Secondly owing to be provided with the through hole that is connected with five jiaos of endoporus in the body, this through hole is along the axial setting of body, and material has been saved in the setting of through hole greatly, makes the inside and outside five jiaos of circular flat bottom flange bolts after the moulding also low weight.
Below only just the utility model embodiment's optimum scheme is described, but can not be interpreted as it is restriction claim.The utility model not only is confined to above embodiment, and its concrete structure allows multiple variation, as long as the variation in these claims is all within protection domain of the present utility model.
Claims (1)
1. five jiaos of circular flat bottom flange bolts inside and outside a kind, it comprises body (1), described body (1) is by bar head (1.1), the body of rod (1.2) and flange plate (1.3) formation that is formed on bar head (1.1) lower end, the outer peripheral surface of the described body of rod (1.2) is provided with screw thread (1.2.1), it is characterized in that: described screw thread (1.2.1) is a partial thread, this partial thread is arranged on the middle lower end of the body of rod (1.2), described flange plate (1.3) is the circular flat bottom flange plate, described bar head (1.1) is five angular pole heads, be provided with five jiaos of endoporus (1.1.1) vertically in this five angular poles head, be provided with the through hole (1.4) that is connected with five jiaos of endoporus (1.1.1) in the described body (1), this through hole (1.4) is along the axial setting of body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202905231U CN201786882U (en) | 2010-08-09 | 2010-08-09 | Circular flat-bottomed flange bolt with inner and outer pentagons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202905231U CN201786882U (en) | 2010-08-09 | 2010-08-09 | Circular flat-bottomed flange bolt with inner and outer pentagons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786882U true CN201786882U (en) | 2011-04-06 |
Family
ID=43818846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202905231U Expired - Fee Related CN201786882U (en) | 2010-08-09 | 2010-08-09 | Circular flat-bottomed flange bolt with inner and outer pentagons |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786882U (en) |
-
2010
- 2010-08-09 CN CN2010202905231U patent/CN201786882U/en not_active Expired - Fee Related
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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: 20110406 Termination date: 20110809 |