CN217539251U

CN217539251U - Non-standard shaft shoulder bolt

Info

Publication number: CN217539251U
Application number: CN202221200288.3U
Authority: CN
Inventors: 张永良; 沈健狄; 李华; 竺建波
Original assignee: Ningbo Jinding Fastening Piece Co ltd
Current assignee: Ningbo Jinding Fastening Piece Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-10-04
Anticipated expiration: 2032-05-19

Abstract

The non-standard shaft shoulder bolt comprises a bolt head and a polished rod part arranged on the lower portion of the bolt head, wherein a threaded part is arranged on the lower portion of the polished rod part, the diameter of the bolt head is larger than that of the polished rod part, and the diameter of the polished rod part is larger than that of the threaded part. A first inner hexagonal groove is formed in the bolt head, a second inner hexagonal groove is formed in the bottom of the first inner hexagonal groove, and a third inner hexagonal groove is formed in the bottom of the second inner hexagonal groove; the sizes of the first inner hexagonal groove, the second inner hexagonal groove and the third inner hexagonal groove are sequentially decreased progressively. Compared with the prior art, this application is provided with a plurality of dismouting grooves, is not limited to single model, can use the assembly and disassembly tools of different models to carry out the dismouting, and through the reasonable distribution design in dismouting groove for shoulder bolt's whole weight greatly reduced.

Description

Non-standard shaft shoulder bolt

Technical Field

The utility model belongs to the technical field of the shaft shoulder bolt, concretely relates to non-standard shaft shoulder bolt.

Background

The bolt is also called as a screw or a bolt nail, is a common fastening connecting piece, mainly structurally comprises a bolt head and a rod body arranged at the lower part of the bolt head, and is mainly used for fastening and connecting two or more parts with through holes. The bolt is rare in daily life and industrial production and manufacturing, so the bolt is also called industrial rice, and the application of the bolt is wide. Micro bolts used for DVD, camera, glasses, clock, electronics, etc.; general bolts used for televisions, electric appliances, musical instruments, furniture, and the like; large-scale bolts and nuts used in the capital construction fields of engineering, buildings, bridges and the like. Bolts have an important task in industry, and as long as there is industry on earth, the function of bolts is of permanent importance.

The bolts are often hex bolts, including socket head cap bolts and socket head cap bolts. The shaft shoulder bolt, also known as a plug screw, a stop bolt and the like, is a special one of the hexagon socket head cap screws, and is mainly applied to the field of dies. The matching of the shaft shoulder bolt and the bolt pull rod can control the die opening stroke between the die plates such as the connecting seat plate, the template and the like. Since the mold can be provided on the parting surface of the mold, the mold design can be miniaturized. The product has high hardness, good toughness, excellent wear resistance and heat resistance, is suitable for precise dies, can obviously prolong the service life of the die, particularly effectively controls the thermal deformation of the precise dies, and is suitable for dies in high-temperature operation environments.

The existing shaft shoulder bolt is loosened by vibration caused by opening and closing of the die and the driving device in the die opening and closing process, so that the forming precision and even the operation of equipment are influenced, and therefore, a worker needs to frequently carry out maintenance work. And the existing shaft shoulder bolt is only provided with one dismounting groove, only a single-type dismounting tool can be used for dismounting, the main structure is solid, and the design space is also provided in the aspect of light weight design.

Accordingly, based on some of the above prior art, the present application is directed to further designs and improvements of the existing standard shoulder bolts.

SUMMERY OF THE UTILITY MODEL

To not enough among the above prior art, the utility model provides a nonstandard shaft shoulder bolt is provided with a plurality of dismouting grooves, is not limited to single model, can use the assembly and disassembly tools of different models to carry out the dismouting, and through the rational distribution design in dismouting groove for the whole weight greatly reduced of shaft shoulder bolt.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve.

The non-standard shaft shoulder bolt comprises a bolt head and a polished rod part arranged on the lower portion of the bolt head, wherein a threaded part is arranged on the lower portion of the polished rod part, the diameter of the bolt head is larger than that of the polished rod part, and the diameter of the polished rod part is larger than that of the threaded part. The bolt head is internally provided with a first inner hexagonal groove, the bottom of the first inner hexagonal groove is provided with a second inner hexagonal groove, and the bottom of the second inner hexagonal groove is provided with a third inner hexagonal groove. The sizes of the first inner hexagonal groove, the second inner hexagonal groove and the third inner hexagonal groove are sequentially decreased progressively. This design can make this application carry out the dismouting through the dismouting spanner of different specifications, also can alleviate the whole weight of bolt greatly under the prerequisite of guaranteeing bolt strength, reduces the material cost of manufacturing.

In a preferred embodiment, the first inner hexagonal groove has a side-to-side dimension of 12mm, and can be attached and detached by an attachment and detachment wrench of a corresponding specification.

In a preferred embodiment, the second inner hexagonal groove has a side-to-side dimension of 10mm, and can be attached and detached by an attachment and detachment wrench of a corresponding specification.

In a preferred embodiment, the third inner hexagonal groove has a side-to-side dimension of 8mm, and can be attached and detached by an attachment and detachment wrench of a corresponding specification.

In a preferred embodiment, the side of the bolt head is provided with an anti-slip thread, and the bolt can be screwed by hand in some scenes in which the bolt head is exposed to the outside.

In a preferred embodiment, the lower surface of the polished rod part is annularly provided with oblique teeth around the threaded part, so that the polished rod part can tightly engage with the surface of the connecting piece, and the bolt is prevented from loosening due to vibration.

In a preferred embodiment, the material of the bolt is alloy structural steel with specification number 35CrMo, so that the bolt can bear stronger impact, bending torsion and load.

Compared with the prior art, the method has the following beneficial effects: the utility model provides a nonstandard shoulder bolt is provided with a plurality of dismouting grooves, is not limited to single model, can use the assembly and disassembly tools of different models to carry out the dismouting, and through the rational distribution design in dismouting groove for shoulder bolt's whole weight greatly reduced.

Drawings

Fig. 1 is a first perspective view of the present application.

Fig. 2 is a perspective view of the second embodiment of the present application.

Fig. 3 is a plan sectional view of the present application.

The following are labeled descriptions in the drawings of the present application:

1. a bolt head; 2. a light bar section; 3. a threaded portion; 4. a first inner hexagonal groove; 5. a second inner hexagonal groove; 6. a third inner hexagonal groove; 7. anti-skid lines; 8. an external thread; 9. and (4) helical teeth.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it should be understood that the terms: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the figure shows, just for the convenience of description the utility model discloses and the simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 3, the non-standard shaft shoulder bolt is made of alloy structural steel with the specification number of 35CrMo, so that the bolt can bear stronger impact, bending torsion and load. The shaft shoulder bolt comprises a bolt head 1 and a polished rod part 2 arranged on the lower portion of the bolt head 1, wherein inclined teeth 9 are annularly arranged on the lower surface of the polished rod part 2 around a thread part 3, so that the polished rod part 2 can tightly engage with the surface of a connecting piece, and the bolt is prevented from loosening due to vibration. The lower part of the polished rod part 2 is provided with a threaded part 3, and an external thread 8 is arranged on the threaded part 3. The diameter of the bolt head 1 is larger than that of the polished rod part 2, and the diameter of the polished rod part 2 is larger than that of the thread part 3. The side face of the bolt head 1 is provided with the anti-skidding threads 7 in a surrounding mode, and the bolt can be screwed by hands in some scenes that the bolt head 1 is exposed outside.

In particular, the present application is distinguished from the prior art by the following features: a first inner hexagonal groove 4 is formed in the bolt head 1, a second inner hexagonal groove 5 is formed in the bottom of the first inner hexagonal groove 4, and a third inner hexagonal groove 6 is formed in the bottom of the second inner hexagonal groove 5. The sizes of the first inner hexagonal groove 4, the second inner hexagonal groove 5 and the third inner hexagonal groove 6 are sequentially decreased progressively. This design can make this application carry out the dismouting through the dismouting spanner of different specifications, also can alleviate the whole weight of bolt greatly under the prerequisite of guaranteeing bolt intensity, reduces the material cost of manufacturing.

Specifically, in this embodiment, the opposite side size of first hexagon socket 4 is 12mm, the opposite side size of second hexagon socket 5 is 10mm, the opposite side size of third hexagon socket 6 is 8mm for this application can be through the dismouting spanner of three kinds of corresponding specifications.

Compared with the prior art, this application is provided with a plurality of dismouting grooves, is not limited to single model, can use the assembly and disassembly tools of different models to carry out the dismouting, and through the reasonable distribution design in dismouting groove for shoulder bolt's whole weight greatly reduced.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any substitutions, modifications, and improvements that can be easily conceived by those skilled in the art are all within the protection scope of the present invention.

Claims

1. The non-standard shaft shoulder bolt is characterized by comprising a bolt head (1) and a polished rod part (2) arranged at the lower part of the bolt head (1), wherein a threaded part (3) is arranged at the lower part of the polished rod part (2), the diameter of the bolt head (1) is larger than that of the polished rod part (2), and the diameter of the polished rod part (2) is larger than that of the threaded part (3);

a first inner hexagonal groove (4) is formed in the bolt head (1), a second inner hexagonal groove (5) is formed in the bottom of the first inner hexagonal groove (4), and a third inner hexagonal groove (6) is formed in the bottom of the second inner hexagonal groove (5); the sizes of the first inner hexagonal groove (4), the second inner hexagonal groove (5) and the third inner hexagonal groove (6) are sequentially decreased progressively.

2. A non-standard shoulder bolt according to claim 1, characterised in that the opposite side dimension of the first internal hexagonal slot (4) is 12mm.

3. A non-shoulder bolt according to claim 2 wherein the second internal hexagonal slot (5) has opposite sides of 10mm.

4. A non-shoulder bolt according to claim 3 wherein the third internal hexagonal slot (6) has opposite sides of 8mm.

5. A non-shoulder bolt according to claim 1 in which the bolt head (1) is flanked by anti-slip threads (7).

6. The non-standard shaft shoulder bolt according to claim 1, characterized in that the lower surface of the polished rod part (2) is provided with inclined teeth (9) around the threaded part (3).

7. The non-standard shaft shoulder bolt according to claim 1, wherein the bolt is made of structural alloy steel with specification number of 35 CrMo.