CN211449336U

CN211449336U - Split type bolt

Info

Publication number: CN211449336U
Application number: CN202020068476.XU
Authority: CN
Inventors: 王斌峰
Original assignee: Froetek Plastic Technology Wuxi Co ltd
Current assignee: Froetek Plastic Technology Wuxi Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-09-08
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a split type bolt, including main part and head, the main part includes the screw thread section, the one end that is close to the head in the screw thread section is provided with keying portion, the head is hexagonal prism form, be close to on the head one side of main part be provided with keying portion complex key joint is sunken. Its characteristics adopt split type structure, and head and main part can be separated after using, can subtract heavy.

Description

Split type bolt

Technical Field

The utility model relates to an auto parts field, in particular to split type bolt.

Background

The bolt is a mechanical part and is a cylindrical threaded fastener which can be matched with a nut. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.

For the bolt, the following patents exist in China:

patent grant publication no: CN200955538 discloses a spline tire bolt, wherein a middle disc with a larger diameter is arranged in the middle part of the bolt, two sections of screw rods with different diameters are formed on two sides of the middle disc, and each screw rod is provided with a section of thread from the respective end; the method is characterized in that: a section of polished rod between the threaded section of the smaller-diameter screw rod section and the middle disc is provided with a section of convex hobbing spline tooth section, and the section of hobbing spline tooth section is positioned in a hub bolt unthreaded hole when the tire bolt is fixedly connected in a tire hub. The utility model discloses an outstanding beneficial effect is after using this spline type tire bolt in auto repair, has solved the problem that causes the not hard up rupture of tire bolt in the automobile goes because of wheel hub tire bolt hole wearing and tearing. The spline type tire bolt is simple in structure and convenient to process.

However, the bolt is not split and cannot be reduced in weight after use.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a split type bolt, its characteristics are and adopt split type structure, and head and main part can subtract heavy in the detachable after using.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a split bolt comprises a main body and a head, wherein the main body comprises a threaded section, a keying part is arranged at one end, close to the head, of the threaded section, the head is hexagonal prism-shaped, and a keying recess matched with the keying part is arranged at one side, close to the main body, of the head.

Preferably, the key portion includes a central projection and a spline projection provided with an outer periphery of the projection.

Preferably, the keying recess comprises a central recess matched with the central lug, and the periphery of the central recess is provided with a plurality of spline recesses matched with the spline lugs.

Preferably, the central protrusion is a circular protrusion, and the central recess is a circular recess.

Preferably, in any plane perpendicular to the length direction of the main body, the entirety formed by the edges of the side edges of the spline projections away from the central depression and the extension lines thereof may form a same regular hexagon.

Preferably, the area of the side surface of any spline bump close to one side of the threaded section is larger than the area of the side surface of the spline bump far away from one side of the threaded section.

Preferably, the gasket further comprises a gasket, and the diameter of the gasket through hole is smaller than the diameter of the circumscribed circle of the hexagon.

Preferably, a compression section is arranged between the thread section and the key connection part.

The utility model has the advantages that 1) the head and the main body can be separated after use by adopting a split structure, thereby reducing weight. 2) By adopting the special-shaped spline, the head part and the main body are not easy to slip off when the key joint rotates. 3) The gasket is arranged, so that the bolt can be prevented from slipping. 4) And a pressing part is arranged to further prevent the bolt from slipping. 5) The upper part of the special-shaped spline is small, the lower part of the special-shaped spline is large, the special-shaped spline is convenient to hold by hands, and the special-shaped spline is not easy to slip when being screwed by hands.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural diagram of the main body of the embodiment;

fig. 3 is a schematic view of the head structure of the embodiment.

Reference numerals: 1. a main body; 2. a head portion; 3. a gasket; 4. a threaded segment; 5. a compacting section; 6. a key-connecting portion; 7. a key depression; 8. a central bump; 9. a spline projection; 10. a central depression; 11. the splines are recessed.

Detailed Description

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The present embodiment discloses a split bolt, as shown in fig. 1-3, comprising a main body 1 and a head 2. The body 1 comprises a threaded section 4. A keying portion 6 is provided at an end of the threaded section 4 adjacent the head portion 2. The head 2 is hexagonal prism shaped and a keying recess 7 cooperating with the keying portion 6 is provided on the side of the head 2 close to the body 1. By adopting the split structure, the head 2 and the body 1 can be separated after use, and the weight can be reduced.

The keying portion 6 comprises a central boss 8 and a splined boss 9 arranged about the periphery of the boss. The keying recess 7 comprises a central recess 10 cooperating with the central protrusion 8, the outer circumference of the central recess 10 being provided with a number of spline recesses 11 cooperating with the spline protrusions 9. The central protrusion 8 is a circular protrusion and the central depression 10 is a circular depression. In the plane perpendicular to the length direction of the main body 1, the edge of the side edge of the spline convex blocks 9 far away from the central recess 10 and the extension line thereof form a whole body, and the whole body can form a same regular hexagon.

The area of the side surface of any spline bump 9 close to the threaded section 4 is larger than the area of the side surface of the spline bump 9 far away from the threaded section 4. By adopting the special-shaped spline, the head part 2 and the main body 1 are not easy to slip off when in key joint rotation. The upper part of the special-shaped spline is small, the lower part of the special-shaped spline is large, the special-shaped spline is convenient to hold by hands, and the special-shaped spline is not easy to slip when being screwed by hands.

The gasket 3 is further included, and the diameter of the through hole of the gasket 3 is smaller than that of a circumscribed circle of the hexagon. The washer 3 is provided to prevent the bolt from slipping. Since the diameter of the through hole of the gasket 3 is smaller than the diameter of the circumscribed circle of the hexagon, the gasket 3 can be pressed between the key joint portion 6 and the fitted part after the bolt is screwed on the fitted part.

A pressing section 5 is arranged between the threaded section 4 and the keying section 6. And a pressing part is arranged to further prevent the bolt from slipping.

The utility model discloses a use as follows: the threaded section 4 is externally sleeved with the gasket 3, the threaded section 4 is aligned to a threaded hole on a part to be assembled, and an operator holds the key connection part 6 with a hand and slightly rotates the key connection part to partially screw the threaded section 4 into the threaded hole. The head 2 is then fitted so that the keying recesses 7 engage with the keying portions 6 and the bolt is then screwed with a wrench. After screwing, the wrench drives the head part 2 to be separated from the main body 1, and the assembly is completed.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and equivalent arrangements can be made without departing from the scope of the present invention, which is intended to be covered by the appended claims.

Claims

1. A split bolt which is characterized in that: the novel key joint comprises a main body (1) and a head (2), wherein the main body (1) comprises a thread section (4), a key joint part (6) is arranged at one end, close to the head (2), of the thread section (4), the head (2) is hexagonal prism-shaped, and a key joint recess (7) matched with the key joint part (6) is arranged at one side, close to the main body (1), of the head (2).

2. The split bolt according to claim 1, wherein: the keying part (6) comprises a central lug (8) and a plurality of spline lugs (9) arranged on the periphery of the lug.

3. The split bolt according to claim 2, wherein: the keying recess (7) comprises a central recess (10) which is matched with the central lug (8), and a spline recess (11) which is matched with the spline lug (9) is arranged on the periphery of the central recess (10).

4. A split bolt as claimed in claim 3, wherein: the central convex block (8) is a circular convex block, and the central concave (10) is a circular concave.

5. A split bolt as claimed in claim 3, wherein: in any plane perpendicular to the length direction of the main body (1), the edge of the side edge of the spline convex block (9) far away from the central recess (10) and the extension line of the side edge form a whole, and the whole can form the same regular hexagon.

6. The split bolt according to claim 5, wherein: the area of the side face, close to the threaded section (4), of any spline bump (9) is larger than the area of the side face, far away from the threaded section (4), of the spline bump (9).

7. The split bolt according to claim 5, wherein: the gasket is characterized by further comprising a gasket (3), wherein the diameter of the through hole of the gasket (3) is smaller than that of the circumscribed circle of the hexagon.

8. The split bolt according to claim 1, wherein: and a pressing section (5) is arranged between the thread section (4) and the key connection part (6).