CN214888227U - Special inner hexagonal slotted bolt - Google Patents

Abstract

The utility model discloses a special bolt of hexagon socket head cap groove, including the bolt body, the bolt body includes bolt head and double-screw bolt, double-screw bolt fixed connection terminal surface middle part department under the bolt head, the bolt head upper end is seted up flutedly, a straight line groove has been seted up at terminal surface middle part under the recess, the bolt head is close to the front and back end inner wall and all is provided with the enhancement face. The utility model provides a pair of special bolt of hexagon socket head cap groove, this special bolt device of hexagon socket head cap groove stable in structure is durable, through the recess that sets up interior hexagonal shape, has increased the lifting surface area of device when using hexagonal spanner to install and remove, and the straight line groove that cooperation recess lower extreme was seted up, simple to operate not only is difficult for smooth silk, has improved the suitability of device moreover.

Description

Special inner hexagonal slotted bolt

Technical Field

The utility model relates to a machine part technical field especially relates to a special bolt of interior hexagonal fluting.

Background

The name of the socket head cap screw, also called socket head cap screw, cup head screw and socket head cap screw is different, but the meaning is the same. The commonly used socket head cap screws are also 4.8 grade, 8.8 grade, 10.9 grade and 12.9 grade. Also called hexagon socket screw, also called hexagon socket screw. The head of the device is a hexagon socket head and is also a cylinder head. Stainless steel and iron are classified according to the material. The stainless steel is stainless steel SUS202 inner hexagon socket cap screw, which is made of stainless steel common material, stainless steel SUS304 inner hexagon socket cap screw, and stainless steel SUS316 inner hexagon socket cap screw. The grade of the iron is divided according to the strength of the socket head cap screw, and the iron comprises a 4.8-grade socket head cap screw, an 8.8-grade socket head cap screw, a 10.9-grade socket head cap screw and a 12.9-grade socket head cap screw. The 8.8-12.9 grade socket head cap screw is called a high-strength high-grade socket head cap screw.

The socket head cap screw is similar to a countersunk head screw, the nail head is embedded in a machine part, the connection strength is high, the socket head cap screw is generally used for various machine tools and accessories thereof, but a socket head cap wrench with a corresponding specification is required to assemble and disassemble the screw, so that the socket head cap screw is difficult to assemble and disassemble under the condition of lacking the socket head cap wrench, and the socket head cap grooved special bolt is maintained.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a special bolt with an inner hexagonal groove.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a special bolt of hexagon socket head groove, includes the bolt body, the bolt body includes bolt head and double-screw bolt, terminal surface middle part department under the bolt head is fixed to the double-screw bolt, the bolt head upper end is seted up flutedly, the straight groove has been seted up at terminal surface middle part under the recess, the bolt head is close to the front and back end inner wall and all is provided with the reinforcing face.

As a further description of the above technical solution:

the inner wall of the groove is of a regular hexagon structure.

As a further description of the above technical solution:

the junction of the inner wall of the bottom end of the straight groove and the side wall is of a chamfer structure.

As a further description of the above technical solution:

the joint of the stud and the bolt head is of a chamfer structure.

As a further description of the above technical solution:

the bolt head is provided with a conical surface close to the lower end surface.

As a further description of the above technical solution:

and the outer wall of the stud is provided with a thread groove.

As a further description of the above technical solution:

the reinforcing surface is of a U-shaped structure.

As a further description of the above technical solution:

the reinforcing surface hardness is 390 HV.

The utility model discloses following beneficial effect has:

1. the utility model provides a pair of special bolt of hexagon socket head cap groove sets up a word groove again through the recess bottom at the hexagon for this special bolt of hexagon socket head cap groove installs and removes except the hexagon socket head cap spanner that uses corresponding specification can also use a word screwdriver to install and remove, has improved the suitability of bolt body.

2. The utility model provides a pair of special bolt of hexagon socket head groove strengthens the face through setting up, has improved the intensity of bolt head front and back end inner wall department, has strengthened stability, prevents that the part that the bolt head is located a word groove both ends from appearing deformation when the dismouting.

3. The utility model provides a pair of special bolt of hexagon socket head cap groove, this special bolt of hexagon socket head cap groove stable in structure, extensive applicability, area of force when installing and removing is big, simple to operate is difficult for smooth silk.

Drawings

Fig. 1 is a schematic perspective view of a special inner hexagon slotted bolt provided by the present invention;

fig. 2 is a top view of the special inner hexagonal slotted bolt provided by the present invention;

fig. 3 is a schematic view of a local structure at a reinforcing surface of the special bolt for inner hexagon grooving according to the present invention;

fig. 4 is a front cross-sectional view of the special bolt for inner hexagon grooving provided by the present invention.

Illustration of the drawings:

1. a bolt body; 2. a bolt head; 21. a conical surface; 3. a stud; 31. a thread groove; 4. a groove; 5. a straight slot; 6. and (5) reinforcing the surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides a special bolt of hexagon socket head groove, includes bolt body 1, and bolt body 1 includes bolt head 2 and double-screw bolt 3, and terminal surface middle part department under bolt head 2 is fixed to double-screw bolt 3, and bolt head 2 and double-screw bolt 3 structure as an organic whole, and recess 4 has been seted up to 2 upper ends of bolt head, and terminal surface middle part has seted up a straight line groove 5 under the recess 4, and bolt head 2 is close to the front and back end inner wall and all is provided with and strengthens face 6.

The inner wall of groove 4 is regular hexagon structure, the condition of smooth silk is avoided appearing in the lifting surface area through setting up to regular hexagon structure can increase the spanner when installing and removing, 5 bottom inner walls of a word groove are the chamfer structure with the lateral wall junction, double-screw bolt 3 is the chamfer structure with bolt head 2 junction, the chamfer structure can reduce the stress concentration phenomenon of device, the durability of device is improved, bolt head 2 is close to terminal surface department down and is provided with conical surface 21, threaded groove 31 has been seted up on the 3 outer walls of double-screw bolt, it is U type structure to strengthen face 6, it is 390HV to strengthen 6 hardnesses of face, prevent that deformation from appearing at the both ends that lead to seting up a word groove 5 because intensity inadequately.

The working principle is as follows: the utility model provides a pair of special bolt of hexagon socket head cap groove, the device need accomplish flawless when producing, defects such as burr, tensile strength and high frequency strength need be up to standard, and 1 surperficial fat liquoring of bolt body, reduce coefficient of friction, through the recess 4 of offering interior hexagon at bolt head 2 upper end and offer a word groove 5 again at recess 4 lower extreme, make bolt body 1 not only can utilize interior hexagonal spanner to install and remove, can also use a word screwdriver to install and remove under the special condition that lacks interior hexagonal spanner, simultaneously because the hexagonal shape of recess 4 and a word shape of a word groove 5, can prevent the condition that smooth silk appears when installing and removing bolt body 1, influence the use, make things convenient for relevant personnel to install and dismantle.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (8)

1. The utility model provides a special bolt of hexagon socket head cap groove, includes bolt body (1), its characterized in that: bolt body (1) includes bolt head (2) and double-screw bolt (3), terminal surface middle part department under bolt head (2) is fixed connection to double-screw bolt (3), bolt head (2) upper end is seted up flutedly (4), straight line groove (5) have been seted up to terminal surface middle part under flutedly (4), bolt head (2) are close to the front and back end inner wall and all are provided with and strengthen face (6).

2. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: the inner wall of the groove (4) is of a regular hexagon structure.

3. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: the joint of the inner wall of the bottom end of the straight groove (5) and the side wall is of a chamfer structure.

4. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: the joint of the stud (3) and the bolt head (2) is of a chamfer structure.

5. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: the bolt head (2) is provided with a conical surface (21) close to the lower end surface.

6. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: and the outer wall of the stud (3) is provided with a thread groove (31).

7. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: the reinforcing surface (6) is of a U-shaped structure.

8. The special bolt for hexagon socket head cap grooving as claimed in claim 1, wherein: the hardness of the reinforcing surface (6) is 390 HV.

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