CN213332284U

CN213332284U - Automobile spline hub loss prevention structure

Info

Publication number: CN213332284U
Application number: CN202021553184.1U
Authority: CN
Inventors: 王文龙
Original assignee: Yuhuan Xingang Machinery Co ltd
Current assignee: Yuhuan Xingang Machinery Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-06-01
Anticipated expiration: 2030-07-30

Abstract

The utility model belongs to the technical field of automobile spline hub, especially, be an automobile spline hub loss prevention structure, including the spline hub body that has the centre bore, the outer wall of spline hub body has the location section of thick bamboo of solid as an organic whole, cup joint sealing mechanism on the location section of thick bamboo, sealing mechanism includes sleeve, seal assembly and rolling assembly, seal assembly includes two symmetric distributions in No. one rubber seal ring at sleeve inner wall both ends, the rolling assembly is equipped with the multiunit, and the rolling assembly install in the sleeve inner wall and be in between two rubber seal rings No. one; the utility model discloses an automobile spline hub, solid lubricating grease, rubber seal, No. two rubber seal and rolling assembly's configuration has reduced the friction that the location section of thick bamboo outer wall produced at to a great extent, has reduced the wearing and tearing of spline hub to and the heat that the friction produced, prolonged the life of spline hub, and this sealing mechanism easy dismounting, convenient to use.

Description

Automobile spline hub loss prevention structure

Technical Field

The utility model belongs to the technical field of automobile spline hub, concretely relates to automobile spline hub loss prevention structure.

Background

The spline hub is a hub connected by a spline shaft, the spline shaft is one type of mechanical transmission, has the same functions as a flat key, a semi-circular key and an inclined key and transmits mechanical torque, a longitudinal key groove is arranged on the outer surface of the shaft, a rotating part sleeved on the shaft is also provided with a corresponding key groove, the rotating part can keep rotating synchronously with the shaft, and some rotating parts can also longitudinally slide on the shaft, such as a gear shifting gear of a gearbox and the like.

Original spline hub when using, it carries out the transmission with the integral key shaft and is connected, and at the transmission in-process, the reaction force that produces makes and produces the friction on the contact surface of spline hub inner wall and integral key shaft, causes spline hub wearing and tearing.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides an automobile spline hub loss prevention structure has convenient to use and long service life's characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an automobile spline hub loss prevention structure, is including the spline hub body that has the centre bore, the outer wall of spline hub body has a location section of thick bamboo as an organic whole admittedly, the centre bore inner wall of spline hub body has internal spline still seted up the locating hole on the spline hub body, sealing mechanism has been cup jointed on the location section of thick bamboo, sealing mechanism includes sleeve, seal assembly and rolling subassembly, seal assembly includes that two symmetric distributions are in rubber seal at sleeve inner wall both ends, rolling subassembly is equipped with the multiunit, just rolling unit installs sleeve inner wall is in two between the rubber seal.

As an optimized technical scheme of the utility model, rubber seal's section is "U" type structure.

As an optimized technical scheme of the utility model, one side of a rubber seal still distributes and has solid lubricating grease.

As a preferred technical scheme of the utility model, telescopic terminal surface bonds and is fixed with No. two rubber seal, just No. two rubber seal's section is half circular ring structure.

As an optimized technical scheme of the utility model, the roll subassembly is equipped with six groups, and six groups the roll subassembly is the equidistant distribution of annular.

As a preferred technical scheme of the utility model, the roll subassembly includes installation piece, gyro wheel and expanding spring the spread groove has been seted up to the sleeve inner wall, the installation piece is in the spread groove, the gyro wheel is installed installation piece surface, expanding spring distributes the installation piece with between the tank bottom of spread groove.

As an optimal technical scheme of the utility model, still include the bolt, the sleeve by the bolt fastening.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an automobile spline hub, solid lubricating grease, rubber seal, No. two rubber seal and rolling assembly's configuration, reduced to a great extent location section of thick bamboo outer wall directly and the direct sliding contact of external device gland causes wearing and tearing, has reduced the wearing and tearing of spline hub to and the heat that the friction produced, prolonged the life of spline hub, and this sealing mechanism easy dismounting, convenient to use.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic side sectional structural view of the sealing mechanism of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a of fig. 2 according to the present invention;

in the figure: 1. a splined hub body; 2. a positioning cylinder; 3. an internal spline; 4. positioning holes; 5. a sealing mechanism; 6. a bolt; 7. a sleeve; 8. solid grease; 9. a first rubber sealing ring; 10. a second rubber sealing ring; 11. connecting grooves; 12. mounting a sheet; 13. a roller; 14. a telescoping spring.

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.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a car spline hub loss prevention structure comprises a spline hub body 1 with a center hole, the outer wall of the spline hub body 1 is provided with a positioning cylinder 2 which is fixedly integrated, the inner wall of the center hole of the spline hub body 1 is provided with an internal spline 3, the spline hub body 1 is also provided with a positioning hole 4, the positioning cylinder 2 is sleeved with a sealing mechanism 5, the sealing mechanism 5 comprises a sleeve 7, a sealing assembly and a rolling assembly, the sealing assembly comprises two rubber sealing rings 9 which are symmetrically distributed at two ends of the inner wall of the sleeve 7, the rolling assembly is provided with a plurality of groups, the rolling assembly is arranged on the inner wall of the sleeve 7 and is positioned between the two rubber sealing rings 9, when the device is used, the sealing mechanism 5 is sleeved on the positioning cylinder 2, the sealing mechanism 5 is fixed on a device shell, a spline shaft penetrates through the center hole of the spline hub body 1 and the sealing mechanism 5, and when the spline, the first rubber sealing ring 9 can improve the sealing performance between the sleeve 7 and the positioning cylinder 2, sliding friction between the sleeve 7 and the positioning cylinder 2 is changed into rolling friction by the rolling assembly, friction is small, damage to a spline hub is avoided, and abrasion caused by direct sliding contact of the positioning cylinder 2 and an external device gland is avoided.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the cross section of the first rubber seal ring 9 is a "U" shaped structure, the first rubber seal ring 9 has a flexible effect, and the outer wall of the first rubber seal ring 9 can abut against the outer wall of the positioning cylinder 2 due to the structural shape, so that the sealing performance is improved.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, solid grease 8 is further distributed on one side of the first rubber seal ring 9, so that friction between the sleeve 7 and the positioning cylinder 2 is further reduced, wear of the spline hub is reduced, and the service life of the spline hub is prolonged.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the end surface of the sleeve 7 is bonded and fixed with the second rubber sealing ring 10, and the section of the second rubber sealing ring 10 is a semicircular annular structure, so that the outer wall of the second rubber sealing ring 10 abuts against the inner wall of the device housing, and the sealing performance is further improved.

Specifically, according to fig. 1 and fig. 2, in the present embodiment, six sets of rolling assemblies are provided, and the six sets of rolling assemblies are distributed in an annular shape at equal intervals, so that the sliding friction between the sleeve 7 and the positioning cylinder 2 is changed into rolling friction, the friction force is small, and the damage to the spline hub is reduced.

Specifically, as shown in fig. 1, fig. 2, and fig. 3, in this embodiment, the rolling assembly includes a mounting piece 12, a roller 13, and a telescopic spring 14, a connecting groove 11 is formed in an inner wall of the sleeve 7, the mounting piece 12 is located in the connecting groove 11, the roller 13 is mounted on a surface of the mounting piece 12, the telescopic spring 14 is distributed between the mounting piece 12 and a groove bottom of the connecting groove 11, the roller 13 changes sliding friction between the sleeve 7 and the spline shaft into rolling friction, the friction force is small, the spline shaft can be reliably in transmission connection with the spline hub body 1 under an elastic force action of the telescopic spring 14, and an isolation supporting effect exists, so that the friction force between the sleeve 7 and the positioning cylinder 2 is further reduced, and damage to the spline hub is reduced.

Specifically, as shown in fig. 1, in this embodiment, a bolt 6 is further included, the sleeve 7 is fixed by the bolt 6, if the spline hub body 1 is used in a transmission case, the sleeve 7 is fixed by the bolt 6 on an inner wall of the transmission case, and if the spline hub body 1 is used in a clutch, the sleeve 7 is fixed by the bolt 6 on an inner wall of a clutch cover.

The utility model discloses a theory of operation and use flow: in the anti-damage structure, when the anti-damage structure is used, the sealing mechanism 5 is sleeved on the positioning cylinder 2, and the sealing mechanism 5 is fixed on the shell of the device, if the spline hub body 1 is used in a transmission box body, the sleeve 7 is fixed on the inner wall of the transmission box body by the bolt 6, and if the spline hub body 1 is used in a clutch, the sleeve 7 is fixed on the inner wall of a clutch gland by the bolt 6;

the integral key shaft runs through the centre bore and the sealing mechanism 5 of spline hub body 1, and when the integral key shaft drove spline hub body 1 rotatory, a rubber seal 9 and No. two rubber seal 10 can improve the leakproofness between sleeve 7 and the location section of thick bamboo 2 to rolling assembly changes the sliding friction between sleeve 7 and the location section of thick bamboo 2 into rolling friction, and frictional force is little, and solid lubricating grease 8 provides lubricated effect simultaneously, avoids the spline hub impaired.

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 may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automobile spline hub loss prevention structure, is including spline hub body (1) that has the centre bore, the outer wall of spline hub body (1) has a location section of thick bamboo (2) of solid as an organic whole, the centre bore inner wall of spline hub body (1) has internal spline (3) still seted up locating hole (4), its characterized in that on spline hub body (1): a sealing mechanism (5) is sleeved on the positioning cylinder (2), the sealing mechanism (5) comprises a sleeve (7), a sealing assembly and a rolling assembly, the sealing assembly comprises two rubber sealing rings (9) which are symmetrically distributed at two ends of the inner wall of the sleeve (7), the rolling assembly is provided with a plurality of groups, and the rolling assembly is arranged on the inner wall of the sleeve (7) and is positioned between the two rubber sealing rings (9).

2. The automobile spline hub loss prevention structure according to claim 1, wherein: the section of the first rubber sealing ring (9) is of a U-shaped structure.

3. The automobile spline hub loss prevention structure according to claim 1, wherein: and solid lubricating grease (8) is also distributed on one side of the first rubber sealing ring (9).

4. The automobile spline hub loss prevention structure according to claim 1, wherein: the end face of the sleeve (7) is fixedly bonded with a second rubber sealing ring (10), and the section of the second rubber sealing ring (10) is of a semicircular annular structure.

5. The automobile spline hub loss prevention structure according to claim 1, wherein: the rolling assemblies are provided with six groups, and the six groups of rolling assemblies are distributed in an annular shape at equal intervals.

6. The automobile spline hub loss prevention structure according to claim 1, wherein: the rolling assembly comprises an installation piece (12), a roller (13) and a telescopic spring (14), a connecting groove (11) is formed in the inner wall of the sleeve (7), the installation piece (12) is located in the connecting groove (11), the roller (13) is installed on the surface of the installation piece (12), and the telescopic spring (14) is distributed between the installation piece (12) and the groove bottom of the connecting groove (11).

7. The automobile spline hub loss prevention structure according to claim 1, wherein: the sleeve is characterized by further comprising a bolt (6), and the sleeve (7) is fixed by the bolt (6).