CN204921621U - Durable bolt - Google Patents
Durable bolt Download PDFInfo
- Publication number
- CN204921621U CN204921621U CN201520684328.XU CN201520684328U CN204921621U CN 204921621 U CN204921621 U CN 204921621U CN 201520684328 U CN201520684328 U CN 201520684328U CN 204921621 U CN204921621 U CN 204921621U
- Authority
- CN
- China
- Prior art keywords
- bolt head
- bolt
- screw rod
- polished rod
- rod portion
- 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
The utility model relates to a durable bolt, including bolt head and screw rod, the screw rod includes polished rod portion and screw thread portion, the installation slotted hole that has a cross or a style of calligraphy is opened to the upper surface of bolt head, bolt head upper portion is oval cylindricality, and the connection terminal surface of bolt head bottom and polished rod portion is the circular conical surface, the side surface of bolt head is equipped with the recess of at least one platykurtic. The utility model has the advantages that: it is rational in infrastructure, set up at the installation slotted hole of the cross of bolt head upper surface or a style of calligraphy and set up the platykurtic recess at the bolt head side surface, increased the mounting means of bolt, the connection terminal surface of bolt head bottom and polished rod portion is the circular conical surface, can strengthen the area of contact of polished rod portion bottom the bolt head, increases bonding strength between the two then, can prevent effectively that the bolt is in the circumstances of bolt head with screw rod junction breaking occur.
Description
Technical field
The utility model relates to a kind of bolt, belongs to a kind of fastening piece.
Background technique
Fastening piece is most widely used fundamental parts, be two or more part (or component) is fastenedly connected into one overall time the general name of class mechanical parts that adopts.Fastening piece description is various, performance purposes each, and standardization, seriation, unitized strong.Wherein bolt is modal one in fastening piece.Bolt of the prior art comprises head and screw rod, the yi word pattern for mounting and dismounting the body of bolt or criss-cross mounting hole is provided with on bolt head top, bolt is after repeatedly mounting and dismounting, and mounting hole can expand gradually and even be out of shape, and affects follow-up use.Therefore, a kind of new technological scheme should be provided to solve the problem.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, and using effect is good and facilitate durable bolt.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of durable bolt, comprise bolt head and screw rod, described screw rod comprises polished rod portion and screw section, the upper surface of described bolt head has the installation slotted eye of cross or yi word pattern, described bolt head top is elliptical cylinder-shape, the connecting end surface in bottom bolt head and polished rod portion is conical surface, and the side surface of described bolt head is provided with the groove of at least one flat.
Further technological scheme:
The cross section of described groove is rectangle.
Described groove is step trough.
One end that described screw rod is positioned at bolt head is provided with symmetrical spline sheet.
Due to the application of technique scheme, the utility model compared with prior art tool has the following advantages:
Bolt of the present utility model, rational in infrastructure, be arranged on the cross of bolt head upper surface or the installation slotted eye of yi word pattern and be arranged on the flat groove of bolt head side surface, add the mounting type of bolt; The connecting end surface in bottom bolt head and polished rod portion is conical surface, can strengthen the area of contact bottom polished rod portion and bolt head, then increase adhesive strength between the two, can effectively prevent bolt from situation about rupturing occurring at bolt head and screw rod joint.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation.
In above accompanying drawing: 1, bolt head, 2, screw rod, 2-1, polished rod portion, 2-2, screw section, 3, slotted eye is installed, 4, conical surface, 5, groove, 6, spline sheet.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment one:
As shown in Figure 1, a kind of durable bolt of the utility model, comprise bolt head 1 and screw rod 2, screw rod 2 comprises polished rod portion 2-1 and screw section 2-2, the upper surface of bolt head 1 has the installation slotted eye 3 of cross or yi word pattern, bolt head 1 top is elliptical cylinder-shape, bottom bolt head 1 and the connecting end surface of polished rod portion 2-1 be conical surface, the side surface of bolt head 1 is provided with the groove 5 of at least one flat, when installing or removing bolt, if when installation slotted eye 3 is wherein damaged, the groove 5 by being arranged on the flat on bolt head 1 side surface can be adopted to install or remove, expand the mounting type of bolt.
Preferably, as an embodiment, the cross section of groove 5 is rectangle.
Preferably, as another embodiment, groove 5 is step trough.
Preferably, as an embodiment, one end that screw rod 2 is positioned at bolt head 1 is provided with symmetrical spline sheet 6.Screw rod 2 arranges spline sheet 6, and when bolt uses, spline sheet 6 can increase the surface of contact with object when entering mounting hole and being inner, serves the effect of anti-rotation.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvement or replacement, these improve or replace and also should be considered as protection domain of the present utility model.
Claims (4)
1. a durable bolt, it is characterized in that: comprise bolt head (1) and screw rod (2), described screw rod (2) comprises polished rod portion (2-1) and screw section (2-2), the upper surface of described bolt head (1) has the installation slotted eye (3) of cross or yi word pattern, described bolt head (1) top is elliptical cylinder-shape, the connecting end surface of bolt head (1) bottom and polished rod portion (2-1) is conical surface (4), and the side surface of described bolt head (1) is provided with the groove (5) of at least one flat.
2. the durable bolt of one according to claim 1, is characterized in that: the cross section of described groove (5) is rectangle.
3. the durable bolt of one according to claim 2, is characterized in that: described groove (5) is step trough.
4. the durable bolt of one according to claim 1, is characterized in that: one end that screw rod (2) is positioned at bolt head (1) is provided with symmetrical spline sheet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684328.XU CN204921621U (en) | 2015-09-06 | 2015-09-06 | Durable bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684328.XU CN204921621U (en) | 2015-09-06 | 2015-09-06 | Durable bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921621U true CN204921621U (en) | 2015-12-30 |
Family
ID=54970752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520684328.XU Expired - Fee Related CN204921621U (en) | 2015-09-06 | 2015-09-06 | Durable bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917805A (en) * | 2017-04-17 | 2017-07-04 | 海盐远洋标准件有限公司 | A kind of Novel bolt |
| CN107701566A (en) * | 2017-10-27 | 2018-02-16 | 江苏昊嘉不锈钢标准件有限公司 | A kind of special Multifunctional bolt |
-
2015
- 2015-09-06 CN CN201520684328.XU patent/CN204921621U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917805A (en) * | 2017-04-17 | 2017-07-04 | 海盐远洋标准件有限公司 | A kind of Novel bolt |
| CN106917805B (en) * | 2017-04-17 | 2020-04-17 | 海盐远洋标准件有限公司 | Bolt |
| CN107701566A (en) * | 2017-10-27 | 2018-02-16 | 江苏昊嘉不锈钢标准件有限公司 | A kind of special Multifunctional bolt |
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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: 20151230 Termination date: 20170906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |