CN220163978U - Fastening assembly, auxiliary frame structure and automobile - Google Patents

Abstract

The utility model relates to a fastening assembly which comprises a first sleeve, a second sleeve and a bolt, wherein the first sleeve surrounds a first central hole, the first central hole is a step hole, the first central hole comprises a large-aperture section, a small-aperture section positioned at the lower side of the large-aperture section and a step surface positioned between the large-aperture section and the small-aperture section, the second sleeve surrounds a second central hole, the bolt head of the bolt is connected with the small-aperture section in a mode of axially sliding and circumferentially fixing, the second sleeve is fixedly connected with the large-aperture section in a threaded connection mode, the lower end face of the second sleeve is used for supporting the upper end face of the bolt head, the screw rod of the bolt is matched with the second central hole, and the screw rod of the bolt extends upwards out of the second central hole. The utility model further provides a subframe structure. The utility model also provides an automobile. The utility model can utilize shorter bolts to form longer fastening components, reduces the manufacturing difficulty of the bolts, reduces the cost of parts and reduces the bending and breaking risks of the bolts.

Description

Fastening assembly, auxiliary frame structure and automobile

Technical Field

The utility model relates to an automobile, in particular to a fastening assembly, an auxiliary frame structure and an automobile.

Background

In the prior art, in order to ensure that the steering engine and the auxiliary frame are firmly and reliably connected, a scheme of long sleeve matched with long bolts is generally adopted to fixedly mount the steering engine, the long sleeve is welded on the auxiliary frame, the long sleeve vertically penetrates through the auxiliary frame, and the steering engine is fixedly connected on the auxiliary frame by utilizing the long bolts matched with the long sleeve.

For example, the connection structure of the rear cross member of the auxiliary frame and the steering machine, which is proposed in the patent application CN201911196661.5, adopts the scheme of long sleeve and long bolt to fixedly install the steering machine.

The scheme of adopting the long sleeve to be matched with the long bolt to fix the steering gear has the following technical problems: when the long bolt is a nonstandard bolt with the length exceeding 120mm, the long bolt is difficult to manufacture, the cost of parts of the long bolt is high, and the risks of bending and breaking of the long bolt are high.

Disclosure of Invention

The utility model aims to provide a fastening assembly, a subframe structure and an automobile, so as to reduce or eliminate at least one technical problem.

The fastening assembly comprises a first sleeve, a second sleeve and a bolt, wherein the first sleeve surrounds a first central hole, the first central hole is a step hole, the first central hole comprises a large-aperture section, a small-aperture section positioned at the lower side of the large-aperture section and a step surface positioned between the large-aperture section and the small-aperture section, the second sleeve surrounds a second central hole, the bolt head of the bolt is connected with the small-aperture section in a mode of axial sliding and circumferential fixing, the second sleeve is fixedly connected with the large-aperture section in a threaded connection mode, the lower end face of the second sleeve is used for supporting the upper end face of the bolt head, a screw rod of the bolt is matched with the second central hole, and the screw rod of the bolt extends upwards out of the second central hole.

Optionally, a first outer flange is disposed at an upper end of the bolt head.

Optionally, an inner thread is disposed on the inner wall of the large-aperture section, and an outer thread in threaded connection with the inner thread is disposed on the outer wall of the second sleeve.

Optionally, the upper end of the second sleeve is provided with a second outer flange.

Optionally, the cross section of the outer wall of the second outer flange is polygonal.

Optionally, the section of the small-aperture section is polygonal.

Optionally, the bolt is a standard.

The utility model also provides a subframe structure, which comprises a subframe and the fastening assembly of any one of the above, wherein the first sleeve is welded on the subframe.

Optionally, the auxiliary frame structure further comprises a steering machine and a nut, wherein the steering machine is provided with a mounting hole, the mounting hole is matched with a screw rod of the bolt, the nut is in threaded connection with the screw rod of the bolt, and the nut is fixedly connected with the steering machine on the fastening assembly.

The utility model also provides an automobile comprising the auxiliary frame structure.

The utility model has the following characteristics: by reasonably arranging the first sleeve and the second sleeve, a longer fastening assembly can be formed by using shorter bolts, so that the installation requirement of the steering engine is met, and the use of nonstandard bolts with the length exceeding 120mm can be avoided; because shorter bolts can be adopted to meet the installation requirement of the steering engine, the manufacturing difficulty of the bolts is reduced, the cost of parts is reduced, the bending and breaking risks of the bolts are reduced, and the reliability of a steering system is improved. The bolt head of the bolt is sealed in the first sleeve through the second sleeve, the rotation of the bolt is limited through the small-aperture section in the first sleeve, the condition that the bolt rotates in the process of tightening the nut is prevented, and when the steering engine is assembled, the nut is only required to be tightened from the upper part, so that the assembly efficiency is improved.

Drawings

FIG. 1 is an exploded view of a fastening assembly according to one embodiment;

FIG. 2 is a cross-sectional view of a fastening assembly according to an embodiment;

FIG. 3 is a cross-sectional view of a first sleeve according to an embodiment;

FIG. 4 is a top view of a first sleeve according to an embodiment;

FIG. 5 is a schematic view of the structure of the second sleeve according to the embodiment;

FIG. 6 is a cross-sectional view of a second sleeve according to an embodiment;

FIG. 7 is a schematic view of a structure of a bolt according to the embodiment;

fig. 8 is a schematic structural view of a subframe structure according to an embodiment.

Wherein 1-a first sleeve; 2-bolts; 3-a second sleeve; 4-nuts; 5-subframe; 6-steering gear;

11-a large aperture section; 12-a small bore section; 13-step surface; 21-a bolt head; 22-a first outer flange; 23-screw; 31-external threads; 32-a second central bore; 33-a second outer flange.

Detailed Description

Further advantages and effects of the present utility model will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

The fastening assembly as shown in fig. 1 to 7 comprises a first sleeve 1, a second sleeve 3 and a bolt 2, wherein the first sleeve 1 surrounds a first central hole, the first central hole is a stepped hole, the first central hole comprises a large-aperture section 11, a small-aperture section 12 positioned at the lower side of the large-aperture section 11 and a stepped surface 13 positioned between the large-aperture section 11 and the small-aperture section 12, the second sleeve 3 and the bolt 2 can extend into the first central hole from an upper end opening of the large-aperture section 11, the second sleeve 3 surrounds a second central hole 32, a bolt head 21 of the bolt 2 is connected with the small-aperture section 12 in a circumferentially fixed mode through axial sliding, the second sleeve 3 is fixedly connected with the large-aperture section 11 in a threaded mode, the lower end surface of the second sleeve 3 is used for supporting the upper end surface of the bolt head 21, a screw 23 of the bolt 2 is matched with the second central hole 32, and a screw 23 of the bolt 2 extends upwards out of the second central hole 32.

By adopting the technical scheme, through reasonably arranging the first sleeve 1 and the second sleeve 3, a longer fastening assembly can be formed by utilizing the shorter bolt 2, so that the installation requirement of the steering gear 6 is met, and the use of nonstandard bolts with the length exceeding 120mm can be avoided. Because the shorter bolts 2 can be adopted to meet the installation requirement of the steering gear 6, the manufacturing difficulty of the bolts 2 is reduced, the cost of parts is reduced, the bending and fracture risks of the bolts 2 are reduced, and the reliability of a steering system is improved. The bolt head 21 of the bolt 2 is sealed in the first sleeve 1 through the second sleeve 3, the rotation of the bolt 2 is limited through the small-bore section 12 in the first sleeve 1, the condition that the bolt 2 rotates in the process of tightening the nut 4 is prevented, and when the steering engine 6 is assembled, only the nut 4 is needed to be tightened from the upper part, so that the assembly efficiency is improved.

In some embodiments, the upper end of the bolt head 21 is provided with a first outer flange 22. By adopting the above technical scheme, the outer diameter of the first outer flange 22 is larger than the aperture of the small-aperture section 12, so that the bolt 2 can be prevented from sliding down through the small-aperture section 12.

In some embodiments, the inner wall of the large bore section 11 is provided with an internal thread, the outer wall of the second sleeve 3 is provided with an external thread 31 in threaded connection with the internal thread, and the internal thread and the external thread 31 form a threaded connection structure.

In some embodiments, the upper end of the second sleeve 3 is provided with a second outer flange 33. With the above technical solution, the outer diameter of the second outer flange 33 is larger than the aperture of the large aperture section 11, and the second outer flange 33 is supported at the upper end of the first sleeve 1, so that the limit position of the second sleeve 3 can be defined.

In some embodiments, the outer wall of the second outer flange 33 is polygonal in cross-section. With the above-described solution, the second outer flange 33 is polyhedral, which provides convenience for screwing the second sleeve 3 with a tool.

In some embodiments, the small bore section 12 is polygonal in cross-section. As a specific example, the cross section of the small-bore section 12 is in the shape of a regular hexagon. By adopting the technical scheme, the section of the small-bore section 12 is correspondingly arranged with the section of the bolt head 21 of the standard bolt 2.

In some embodiments, the bolt 2 is a standard, and the bolt 2 is a standard bolt having a length of no more than 120 mm.

In some embodiments, the utility model also proposes a subframe structure comprising a subframe 5 and a fastening assembly according to any of the preceding claims, the first sleeve 1 being welded to the subframe 5. In a specific implementation, the first sleeve 1 is welded on the auxiliary frame 5, then the bolt 2 is placed in the first sleeve 1, and then the second sleeve 3 is screwed into the first sleeve 1, so that the fastening assembly is fixedly connected on the auxiliary frame 5.

In some embodiments, as shown in fig. 8, the subframe structure further includes a steering gear 6 and a nut 4, where a mounting hole is provided on the steering gear 6, the mounting hole is matched with a screw 23 of the bolt 2, the nut 4 is in threaded connection with the screw 23 of the bolt 2, and the nut 4 fixedly connects the steering gear 6 to the fastening assembly.

In some embodiments, the present utility model also provides an automobile, including the subframe structure described in any one of the above.

The above embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. In the description of the present specification, a description referring to the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the utility model in connection with the embodiment or example. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims (10)

1. The utility model provides a fastening assembly, its characterized in that includes first sleeve pipe, second sleeve pipe and bolt, first sleeve pipe encloses into first centre bore, first centre bore is the step hole, first centre bore includes big aperture section, is located big aperture section downside's aperture section and be located big aperture section with step face between the aperture section, second sleeve pipe encloses into the second centre bore, the bolt head of bolt with the aperture section passes through axial slip and circumference fixed mode connection, the second sleeve pipe with big aperture section passes through threaded connection's mode fixed connection, the lower terminal surface of second sleeve pipe is used for supporting the up end of bolt head, the screw rod of bolt with the cooperation of second centre bore, the screw rod of bolt upwards stretch out in the second centre bore.

2. The fastening assembly of claim 1, wherein an upper end of the bolt head is provided with a first outer flange.

3. The fastening assembly of claim 1, wherein the inner wall of the large bore section is provided with internal threads and the outer wall of the second sleeve is provided with external threads that are threadably connected to the internal threads.

4. The fastening assembly of claim 1, wherein an upper end of the second sleeve is provided with a second outer flange.

5. The fastening assembly of claim 4, wherein the outer wall of the second outer flange has a polygonal cross-section.

6. The fastening assembly of claim 1, wherein the small bore section is polygonal in cross-section.

7. The fastening assembly of claim 1, wherein the bolt is a standard.

8. A subframe structure comprising a subframe and a fastening assembly as claimed in any one of claims 1 to 7, said first sleeve being welded to said subframe.

9. The subframe structure of claim 8, further comprising a steering gear and a nut, wherein the steering gear is provided with a mounting hole, the mounting hole mates with the shank of the bolt, the nut is threadedly connected with the shank of the bolt, and the nut fixedly connects the steering gear to the fastening assembly.

10. An automobile comprising the subframe structure of claim 8 or 9.