Dustproof cover for automobile input shaft
By designing a double-layer structure of snap rings, multiple ring baffles and sealing films on the input shaft of the car, the problem of lax sealing of the existing dust cover is solved, and more efficient dust and sand isolation is achieved, and service life is extended. And reduces wear.
Patent Information
- Application Number
- CN202421059402.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The dust cover of the existing automobile input shaft cannot be completely sealed, causing dust and sand to enter the steering machine. As the use time increases, the sealing effect gradually deteriorates, resulting in wear and abnormal steering noise problems.
A dust cover for automobile input shaft including steering machine assembly and dust cover assembly is designed, and a double-layer design with a snap ring and multiple annular baffle, a sealing membrane and a sealing ring. The snap ring adopts a pool with a small sliding coefficient. With tetrafluoroethylene material, when the dust-proof cover body rotates synchronously with the input shaft, wear is reduced through multiple sealing surfaces, and a tilt design is used to prevent sand and gravel from entering.
It significantly improves the sealing effect of the dustproof cover, reduces wear, extends service life, and effectively prevents dust and sand from entering the steering machine, avoiding degradation in the performance of parts and abnormal steering noise.
Smart Images
Figure CN222224246U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust prevention, in particular to a dust cover for an automobile input shaft. Background Art
[0002] At present, during the assembly process of the input shaft of various automobile steering gears with the steering gear housing, a dust cover needs to be sleeved on the intermediate shaft to prevent foreign matter such as dust and sand from entering the steering gear.
[0003] However, when on-site operators were repairing and maintaining various steering gears, they found that there were many problems with the dust covers under the existing technology. The main problem was that the existing dust covers could not be completely tightly fitted, or were only sealed with a single sealing ring, and the sealing effect was average. The shaking of the vehicle would cause dust to enter the steering gear through the gaps, and the dust cover would rotate synchronously with the input shaft during operation. As the vehicle was on the road for a longer time, the contact end would wear out quickly, which would not only wear out the steering gear, but also the dust cover, causing dust, sand, etc. to enter the steering gear system, ultimately leading to a decline in part performance and problems such as abnormal steering noise.
[0004] Therefore, it is necessary to invent a dust cover for automobile input shaft to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a dust cover for an automobile input shaft to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above object, the utility model provides the following technical solutions: a dust cover for an automobile input shaft, comprising a steering gear assembly and a dust cover assembly, wherein the dust cover assembly is installed on the steering gear assembly;
[0007] The steering gear assembly comprises a steering gear body, and an input shaft is mounted on the steering gear body;
[0008] The dust cover assembly comprises a dust cover body and a snap ring, wherein the snap ring is located inside the dust cover body, and one end of the snap ring extends to the outside of the dust cover body.
[0009] Preferably, the inner side wall of the dust cover body is integrally formed with a plurality of first annular baffles, and the plurality of first annular baffles are distributed at equal intervals.
[0010] Preferably, the outer side wall of the clamping ring is integrally formed with a plurality of second annular baffles distributed at equal intervals, and the plurality of second annular baffles and the plurality of first annular baffles are distributed alternately, and the first annular baffles and the second annular baffles are both arranged in a truncated cone shape.
[0011] Preferably, a sealing film is arranged around the inner side wall of the first annular baffle, and the inner side wall of the sealing film is fitted and connected to the outer side wall of the clamping ring.
[0012] Preferably, a sealing ring corresponding to the plurality of second annular baffles is fixedly provided on the inner side wall of the dust cover body, and the inner side wall of the sealing ring is fittedly connected to the outer side wall of the second annular baffle.
[0013] Preferably, the outer side wall of one end of the clamping ring away from the dust cover body is arranged obliquely, and a mounting groove adapted to the input shaft is penetrated through the middle of one side of the dust cover body.
[0014] Preferably, one side edge of the dust cover body is integrally formed with a plurality of reinforcing ribs distributed in a circular array, the inner side wall of the clamping ring is fixedly provided with a plurality of sealing rings distributed at equal intervals, and the sealing ring is fit-connected to the outer side wall of one end of the steering gear body.
[0015] Preferably, an annular groove is formed around the inner side wall of the installation groove, and a convex ring adapted to the annular groove is formed integrally around the outer side wall of the input shaft.
[0016] Technical effects and advantages of the utility model:
[0017] The utility model adopts a double-layer design of a dust cover body and a clamping ring, the clamping ring is buckled and sleeved on the steering gear body, and the dust cover body is buckled on the input shaft, and a plurality of first annular baffles, a second annular baffles, a sealing film and a sealing ring are arranged between the dust cover body and the clamping ring, so as to form a plurality of sealed dust-isolating spaces, so that the sealing effect of the dust cover is greatly improved, and dust will not enter due to the shaking of the vehicle, and the plurality of first annular baffles and the second annular baffles are arranged in a truncated cone shape, and at the same time, the outer side wall of the clamping ring is inclined away from the end of the dust cover body, so that gravel will slide outward, and the gravel can be better prevented from entering the steering gear. At the same time, when the dust cover body rotates with the input shaft, the contact surface between the second annular baffle and the sealing ring and the contact surface between the first annular baffle and the sealing film are small, and the clamping ring is made of polytetrafluoroethylene with a very small sliding coefficient, which can greatly reduce wear and improve the service life of the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.
[0019] Figure 2 It is a schematic diagram of the structure of the steering gear assembly of the utility model.
[0020] Figure 3 It is a side structural schematic diagram of a dust cover assembly of the utility model.
[0021] Figure 4This is another side structural diagram of the dust cover assembly of the utility model.
[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the cross-sectional view of the dust cover assembly of the utility model.
[0023] Figure 6 For the utility model Figure 5 A schematic diagram of the enlarged structure of .
[0024] Figure 7 For the utility model Figure 5 An enlarged schematic diagram of the structure at location B.
[0025] In the figure: 1, steering gear assembly; 2, dust cover assembly; 101, steering gear body; 102, input shaft; 103, convex ring; 201, dust cover body; 202, retaining ring; 203, mounting groove; 204, first annular baffle; 205, second annular baffle; 206, sealing film; 207, sealing ring; 208, reinforcing rib; 209, sealing ring; 210, annular retaining groove. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] The utility model provides Figure 1-7 The dust cover for an automobile input shaft shown in the figure comprises a steering gear assembly 1 and a dust cover assembly 2. The dust cover assembly 2 is installed on the steering gear assembly 1. The steering gear assembly 1 comprises a steering gear body 101. An input shaft 102 is installed on the steering gear body 101.
[0028] Furthermore, the dust cover assembly 2 includes a dust cover body 201 and a snap ring 202. The snap ring 202 is made of polytetrafluoroethylene with a very small sliding coefficient. It is not only light in material and high in strength, but also reduces wear. The snap ring 202 is located inside the dust cover body 201, and one end of the snap ring 202 extends to the outside of the dust cover body 201. The inner side wall of the dust cover body 201 is integrally formed with a plurality of first annular baffles 204. The outer side wall of the first annular baffle 204 close to the opening of the dust cover body 201 is flush with the opening of the dust cover body 201, and the inner side wall extends to the outside of the dust cover body 201, which can effectively prevent The sand and gravel enter, improve the sealing effect, and the multiple first annular baffles 204 are distributed at equal intervals, the outer wall of the clamp ring 202 is integrally formed with multiple second annular baffles 205 distributed at equal intervals, and the multiple second annular baffles 205 and the multiple first annular baffles 204 are distributed alternately, the first annular baffles 204 and the second annular baffles 205 are both arranged in a truncated cone shape, the inner side wall of the first annular baffle 204 is surrounded by a sealing film 206, and the inner side wall of the sealing film 206 is fitted and connected with the outer side wall of the clamp ring 202, and the inner side wall of the dust cover body 201 is fixedly provided with a plurality of second annular baffles 205 corresponding to each other. The sealing ring 207 is provided, and the inner side wall of the sealing ring 207 is closely connected with the outer side wall of the second annular baffle plate 205. The sealing film 206 and the sealing ring 207 are both made of rubber. Through the double-layer design of the dust cover body 201 and the snap ring 202, the snap ring 202 is snap-fitted on the steering gear body 101, and the dust cover body 201 is snap-fitted on the input shaft 102. A plurality of first annular baffle plates 204, second annular baffle plates 205, sealing films 206 and sealing rings 207 are arranged between the dust cover body 201 and the snap ring 202 to form a plurality of sealed dust-isolating spaces, so that the sealing effect of the dust cover is greatly improved, and Dust will not enter due to the shaking of the vehicle, and multiple first annular baffles 204 and second annular baffles 205 are arranged in a truncated cone shape. At the same time, the outer wall of the retaining ring 202 is inclined away from the end of the dust cover body 201, and the gravel will slide outward, which can better prevent the gravel from entering the steering gear. At the same time, when the dust cover body 201 rotates with the input shaft 102, the contact surface between the second annular baffle 205 and the sealing ring 207 and the contact surface between the first annular baffle 204 and the sealing film 206 are small, and the retaining ring 202 is made of polytetrafluoroethylene with a very small sliding coefficient, which can greatly reduce wear and increase the service life of the dust cover.
[0029] Secondly, the outer wall of one end of the retaining ring 202 away from the dust cover body 201 is inclined, and a mounting groove 203 adapted to the input shaft 102 is penetrated through the middle of one side of the dust cover body 201. A plurality of reinforcing ribs 208 distributed in a ring array are integrally formed on one side edge of the dust cover body 201. The plurality of reinforcing ribs 208 can improve the strength of the dust cover body 201 and improve its service life. A plurality of sealing rings 209 distributed at equal intervals are fixedly arranged on the inner side wall of the retaining ring 202, and the sealing ring 209 is sealed. The sealing ring 209 is fitted and connected to the outer wall of one end of the steering gear body 101. The multiple sealing rings 209 are all elastic rubber, which can firmly fix the retaining ring 202 and seal the retaining ring 202. The inner wall of the mounting groove 203 is surrounded by an annular groove 210. The outer wall of the input shaft 102 is integrally formed with a convex ring 103 that is compatible with the annular groove 210. The setting of the annular groove 210 and the convex ring 103 can prevent the dust cover body 201 from sliding on the input shaft 102.
[0030] Working principle of this utility model:
[0031] When in use, when installing the dust cover, the snap ring 202 is sleeved onto the protrusion at one end of the steering gear body 101, and multiple sealing rings 209 can allow the snap ring 202 to be tightly clamped on the steering gear body 101 and seal the snap ring 202. At the same time, the dust cover body 201 is installed on the input shaft 102, and the annular groove 210 is clamped on the convex ring 103. Through the double-layer design of the dust cover body 201 and the snap ring 202, the snap ring 202 is snap-fitted onto the steering gear body 101, and the dust cover body 201 is buckled onto the input shaft 102, and multiple first annular baffles 204, second annular baffles 205, sealing films 206 and sealing rings 207 are arranged between the dust cover body 201 and the snap ring 202. , forming multiple sealed dust-isolating spaces, which greatly improves the sealing effect of the dust cover, and does not allow dust to enter due to vehicle shaking, and multiple first annular baffles 204 and second annular baffles 205 are arranged in a truncated cone shape, and at the same time, the outer wall of the retaining ring 202 is inclined at one end away from the dust cover body 201, and the gravel will slide outward, which can better prevent the gravel from entering the steering gear. At the same time, when the dust cover body 201 rotates with the input shaft 102, the contact surface between the second annular baffle 205 and the sealing ring 207 and the contact surface between the first annular baffle 204 and the sealing film 206 are small, and the retaining ring 202 is made of polytetrafluoroethylene with a very small sliding coefficient, which can greatly reduce wear.
[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A dust cover for an automobile input shaft, characterized in that: It comprises a steering gear assembly (1) and a dust cover assembly (2), wherein the dust cover assembly (2) is installed on the steering gear assembly (1); The steering gear assembly (1) comprises a steering gear body (101), and an input shaft (102) is mounted on the steering gear body (101); The dust cover assembly (2) comprises a dust cover body (201) and a snap ring (202), wherein the snap ring (202) is located inside the dust cover body (201), and one end of the snap ring (202) extends to the outside of the dust cover body (201).
2. The dust cover for an automobile input shaft according to claim 1, characterized in that: The inner side wall of the dust cover body (201) is integrally formed with a plurality of first annular baffles (204), and the plurality of first annular baffles (204) are distributed at equal intervals.
3. The dust cover for an automobile input shaft according to claim 2, characterized in that: The outer side wall of the clamping ring (202) is integrally formed with a plurality of second annular baffles (205) distributed at equal intervals, and the plurality of second annular baffles (205) and the plurality of first annular baffles (204) are distributed alternately, and the first annular baffles (204) and the second annular baffles (205) are both arranged in a truncated cone shape.
4. The dust cover for an automobile input shaft according to claim 3, characterized in that: A sealing film (206) is arranged around the inner side wall of the first annular baffle (204), and the inner side wall of the sealing film (206) is closely connected to the outer side wall of the clamping ring (202).
5. The dust cover for automobile input shaft according to claim 4, characterized in that: The inner side wall of the dust cover body (201) is fixedly provided with a sealing ring (207) corresponding one-to-one to the plurality of second annular baffles (205), and the inner side wall of the sealing ring (207) is fitted and connected to the outer side wall of the second annular baffle (205).
6. The dust cover for an automobile input shaft according to claim 5, characterized in that: The outer wall of one end of the clamping ring (202) away from the dust cover body (201) is arranged in an inclined manner, and a mounting groove (203) adapted to the input shaft (102) is provided through the middle of one side of the dust cover body (201).
7. The dust cover for an automobile input shaft according to claim 6, characterized in that: A plurality of reinforcing ribs (208) distributed in a circular array are integrally formed on one side edge of the dust cover body (201), a plurality of sealing rings (209) distributed in an equidistant manner are fixedly provided on the inner side wall of the clamping ring (202), and the sealing ring (209) is fitted and connected to the outer side wall of one end of the steering gear body (101).
8. The dust cover for an automobile input shaft according to claim 7, characterized in that: An annular clamping groove (210) is formed around the inner side wall of the installation groove (203), and a convex ring (103) matching the annular clamping groove (210) is formed integrally around the outer side wall of the input shaft (102).