End cover and hub assembly
By designing an end cap structure with slope surface, jaw parts and tightening ring, the problem of fitting gaps in the assembly of the wheel hub and the end cap is solved, sealing fit is achieved and assembly process is simplified, and the cost is reduced.
Patent Information
- Application Number
- CN202421538785.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-07-01
AI Technical Summary
There is a matching gap problem with the assembly of existing wheel hubs and end caps, which leads to rust on the end surface of the wheel hub installation, and adding bolts or painting processes will increase production and assembly costs.
By designing an end cap structure including a slope surface, a jaw member and a tightening ring, the hook part of the jaw member is snapped into the groove ring of the hub, and the tightening ring tightens the hook part to ensure that the end cap and the hub are sealed.
The sealing fit between the hub and the end cover is achieved, avoiding matching gaps and rust problems, simplifying the assembly process, and reducing production and assembly costs.
Smart Images
Figure CN222645708U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile parts, in particular to an end cover and a wheel hub assembly. Background Art
[0002] In passenger cars, buses and other vehicles, the wheel hub and the end cover are assembled together by bolts. Figure 1 In the structure of the hub end cover assembly shown, the hub 20 and the end cover 10' are screwed together by two bolts 30. This structure in which the hub 20 and the end cover 10' are assembled by bolts 30 has the following problems:
[0003] The ideal gap between the wheel hub 20 and the end cap 10' is zero. However, the plastic end cap 10' has a certain shrinkage rate and will produce slight deformation, which can easily lead to a matching gap between the wheel hub 20 and the end cap 10', thereby causing the mounting end surface 22 of the wheel hub 20 to rust.
[0004] In view of the current problem that the wheel hub 20 and the end cover 10' cannot be sealed, if more bolts 30 are used to solve it, the production cost and assembly cost will increase; if the mounting end face 22 of the wheel hub 20 is painted, a sufficient thickness of paint needs to be applied and undesirable phenomena such as sagging need to be avoided, which also leads to an increase in production costs.
[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0006] In view of this, the utility model provides an end cover and wheel hub assembly, which effectively realizes the sealing fit between the wheel hub and the end cover through structural improvement of the end cover, does not increase production cost and assembly cost, has a simple and efficient assembly process, and has stable and firm fit quality.
[0007] One aspect of the utility model provides an end cover for a wheel hub of a vehicle, the end cover comprising: a mating end face and a ramp surface located on the inner side of the mating end face; a plurality of claw members arranged at intervals on the ramp surface, the claw members being provided with radially protruding hook portions, the back side of the hook portions being provided with grooves; and a tightening ring tightened in the grooves of the plurality of claw members.
[0008] In some embodiments, the hook portion is provided with an insertion chamfer, and an included angle α between the insertion chamfer and the axial direction of the hub satisfies: α<30°.
[0009] In some embodiments, the hook portion is provided with a pull-out chamfer, and an angle β between the pull-out chamfer and the radial direction of the hub satisfies: β<10°.
[0010] In some embodiments, the claw member is supported on the slope surface by two legs, and the two legs are connected by a suspended back plate.
[0011] In some embodiments, the support ring and the groove are interference fit, and the interference amount I and the radius R of the support ring satisfy: R / 3<I<R / 2.
[0012] In some embodiments, the groove is a semicircular groove, and / or the tension ring is a steel ring.
[0013] In some embodiments, the plurality of claw members are evenly spaced and arranged on the slope surface.
[0014] In some embodiments, a sealing groove is provided at the outer edge of the mating end surface, and a sealing strip is embedded in the sealing groove.
[0015] In some embodiments, the mating end surface is provided with a mounting hole, and the sealing groove is located outside the mounting hole and spaced apart from the mounting hole.
[0016] In some embodiments, a surface of the sealing strip is coated with adhesive.
[0017] Another aspect of the utility model provides a wheel hub assembly, comprising: an end cover as described in any of the above embodiments; a wheel hub, provided with a mounting end face and an axial hole, the inner wall of the axial hole being provided with a groove ring; as the hook claw portion is inserted into the groove ring, the tightening ring presses the hook claw portion against the groove ring, presses the mating end face against the mounting end face, and the end cover is sealed and matched with the wheel hub.
[0018] In some embodiments, a sealing groove is provided at the outer edge of the mating end surface, a sealing strip is embedded in the sealing groove, and the sealing strip is pressed tightly between the mating end surface and the mounting end surface.
[0019] Compared with the prior art, the beneficial effects of the present invention include at least:
[0020] The end cover of the utility model is realized by a plurality of claw members arranged at intervals on the slope surface, and the claw members are provided with radially protruding claw parts, so that when the end cover and the wheel hub are assembled, the end cover is hung on the wheel hub by the claw parts being clamped into the groove ring on the inner wall of the axial hole of the wheel hub; the claw members are arranged on the slope surface, and compared with the flat surface, the slope surface can weaken the phenomenon of plastic shrinkage and deformation, so that the claw members are firmly formed on the end cover, and then the claw members can be firmly clamped in the groove ring of the wheel hub; further, through the grooves arranged on the back side of the claw parts and the tightening rings tightened in the grooves of the plurality of claw members, when the claw parts are clamped into the groove ring of the wheel hub, the tightening rings press the claw parts tightly against the groove ring, so that the matching end face of the end cover fits with the installation end face of the wheel hub, thereby ensuring the sealing fit between the end cover and the wheel hub.
[0021] The utility model can effectively achieve a sealed fit between the wheel hub and the end cover through structural improvement of the end cover, avoid deformation of the plastic end cover and cause a fit gap between the wheel hub and the end cover, the fit quality is stable and firm, and there is no need to add bolts, apply paint and other processes, and does not increase production costs and assembly costs; in addition, with the help of the firm clamping of the claw parts, the step of installing the bolts between the end cover and the wheel hub can be omitted, making the assembly process simple and efficient.
[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 A schematic structural diagram of a current wheel hub end cover assembly is shown;
[0025] Figure 2 A schematic diagram showing the structure of an end cover in an embodiment of the utility model is shown;
[0026] Figure 3 Shown along Figure 2 A schematic cross-sectional view of the AA section line;
[0027] Figure 4 Show Figure 2 A schematic structural diagram of the hook portion of the end cover shown;
[0028] Figure 5 Show Figure 2 A schematic diagram of the insertion chamfer and the extraction chamfer of the hook portion of the end cap shown;
[0029] Figure 6 Show Figure 2 A schematic diagram of the cooperation between the groove of the hook portion of the end cover and the support ring;
[0030] Figure 7 A schematic diagram showing the structure of another end cover in an embodiment of the utility model is shown;
[0031] Figure 8 Shown along Figure 7 A schematic cross-sectional view of the BB section line;
[0032] Fig. 9 Show Figure 7 The schematic diagram of the matching structure of the end cover and the wheel hub shown;
[0033] Fig.10 Show Figure 7 A schematic structural diagram of the sealing strip of the end cover is shown. DETAILED DESCRIPTION
[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.
[0035] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.
[0036] In the description of the present invention, the terms "axial", "radial", "front", "back" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the present invention. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present invention, when it is said that a device is "connected" to another device, this includes not only direct connections, but also indirect connections through other elements.
[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.
[0038] Figure 2 The structure of an end cover in an embodiment of the utility model is shown in FIG. Figure 3 Indicate the edge Figure 2 The cross-sectional structure of the AA section line, Figure 4 Indicate Figure 2 The structure of the hook portion of the end cover shown; combined Figures 2 to 4 As shown, the end cover 10 for the wheel hub of a vehicle provided by the embodiment of the utility model comprises:
[0039] A mating end surface 11 and a ramp surface 12 located on the inner side of the mating end surface 11;
[0040] A plurality of claw members 40 are arranged at intervals on the slope surface 12, the claw member 40 is provided with a radially protruding claw portion 42, and a groove 43 is provided on the back of the claw portion 42;
[0041] The tensioning ring 50 is tensioned in the grooves 43 of the plurality of claw members 40 .
[0042] The end cover 10 of the utility model is provided with a plurality of claw members 40 arranged at intervals on the slope surface 12, and the claw member 40 is provided with a radially protruding hook portion 42, so as to realize the connection between the end cover 10 and the wheel hub (the structure of the wheel hub 20 can refer to Figure 1 When assembling (as shown in the figure), the end cover 10 is hung on the wheel hub 20 by inserting the hook claw portion 42 into the groove ring 230 on the inner wall of the axial hole 23 of the wheel hub 20; the claw member 40 is arranged on the slope surface 12. Compared with the plane, the slope surface 12 can weaken the phenomenon of plastic shrinkage and deformation, so that the claw member 40 is firmly formed on the end cover 10, and then the claw member 40 can be firmly clamped in the groove ring 230 of the wheel hub 20; further, through the groove 43 arranged on the back side of the hook claw portion 42, and the tightening ring 50 tightened in the grooves 43 of multiple claw members 40, when the hook claw portion 42 is inserted into the groove ring 230 of the wheel hub 20, the tightening ring 50 presses the hook claw portion 42 tightly against the groove ring 230, so that the matching end face 11 of the end cover 10 fits with the installation end face of the wheel hub 20, ensuring the sealing fit between the end cover 10 and the wheel hub 20.
[0043] The utility model can effectively achieve the sealed fit between the wheel hub 20 and the end cover 10 through the structural improvement of the end cover 10, avoid the deformation of the plastic end cover 10 and cause the fit gap between the wheel hub 20 and the end cover 10, the fit quality is stable and firm, and there is no need to add bolts, apply paint and other processes, and does not increase the production cost and assembly cost; in addition, with the help of the stable clamping of the claw member 40, the step of bolt installation between the end cover 10 and the wheel hub 20 can be omitted, making the assembly process simple and efficient. Of course, the bolt connection between the end cover 10 and the wheel hub 20 can also be retained to enhance the tightness.
[0044] Figure 5 Indicate Figure 2 The structure of the insertion chamfer and the extraction chamfer of the hook portion of the end cover shown in the figure; Figures 1 to 5 As shown, in some embodiments, the hook portion 42 is provided with an insertion chamfer 42 a , and an included angle α between the insertion chamfer 42 a and the axial direction of the hub 20 satisfies: α<30°.
[0045] By inserting the chamfer 42a, the hook portion 42 is conveniently inserted into the groove ring 230 of the hub 20 along the insertion direction Z1 (the same direction as the axial direction of the hub 20); the angle setting of the angle α can control the insertion force to facilitate the insertion of the hook portion 42.
[0046] Furthermore, in some embodiments, the hook portion 42 is provided with a pull-out chamfer 42 b , and an angle β between the pull-out chamfer 42 b and the radial direction of the hub 20 satisfies: β<10°.
[0047] By pulling out the chamfer 42b, the pulling out force along the pulling out direction Z2 is controlled to prevent the hook portion 42 from being easily pulled out of the groove ring 230, while ensuring that the end cover 10 can be loosened when a suitable pulling out force is applied to allow operations such as maintenance and replacement of the end cover 10.
[0048] Figure 6 Indicate Figure 2 The groove of the hook portion of the end cover shown is combined with the support ring; Figures 2 to 6 As shown, in some embodiments, the support ring 50 and the groove 43 are interference fit, and the interference amount I and the radius R of the support ring 50 satisfy: R / 3<I<R / 2.
[0049] The diameter of the tension ring 50 can be set between 1.8 mm and 2.5 mm, but is not limited thereto. The specific value can be set according to the pull-out force requirement. The theoretical fit between the tension ring 50 and the groove 43 is an interference fit to ensure the fixing and supporting function of the tension ring 50. In addition, by setting the ratio between the interference amount I and the radius R of the tension ring 50, the fixing and supporting function of the tension ring 50 is ensured, while the claw portion 42 is prevented from being crushed.
[0050] Continue to combine Figures 2 to 6 As shown, in some embodiments, the groove 43 is a semicircular groove, and / or the tension ring 50 is a steel ring. The semicircular groove is used to achieve interference fit with the tension ring 50; the steel ring is used as a fixed support structure to effectively achieve tensioning and prevent the end cover 10 from falling.
[0051] In some embodiments, the claw member 40 is supported on the slope surface 12 by two legs 46 , and the two legs 46 are connected by a suspended back plate 47 .
[0052] The two legs 46 and the back plate 47 form a base portion 460 with a stable structure to enhance the structural strength of the integrated claw portion 420 located on the base portion 460. The back plate 47 is suspended in the air, so that the base portion 460 of the claw member 40 forms a hollow structure 460'. The claw member 40 is supported on the slope surface 12 by the two legs 46 instead of the entire base portion 460, which can reduce the contact with the slope surface 12 and avoid shrinking the slope surface 12. In addition, the thickness of the legs 46 should not be too thick to prevent the slope surface 12 from shrinking, as long as the claw member 40 can be stably supported on the slope surface 12.
[0053] Furthermore, combined with Figures 1 to 6 As shown, in the above embodiments, a plurality of claw members 40 are preferably evenly spaced and arranged on the slope surface 12, so that the mating end surface 11 of the end cover 10 and the mounting end surface 22 of the hub 20 are evenly fitted to achieve a sealed fit. The number of the claw members 40 can be set as needed. Figure 2The end cover 10 is shown to be provided with eight claw members 40 , but the present invention is not limited thereto.
[0054] Figure 7 The structure of another end cover in the embodiment of the utility model is shown. Figure 8 Indicate the edge Figure 7 The cross-sectional structure of the BB section line, Fig. 9 Indicate Figure 7 The matching structure of the end cover and the wheel hub shown in FIG. Fig.10 Indicate Figure 7 The structure of the sealing strip of the end cover shown; Figure 7 The illustrated embodiment may be based on Figure 2 The embodiments shown are implemented together, or can be implemented separately.
[0055] Combination Figures 2 to 10 As shown, in some embodiments, a sealing groove 13 is provided on the outer edge of the mating end surface 11 of the end cover 10 , and a sealing strip 130 is embedded in the sealing groove 13 .
[0056] When the end cover 10 is assembled to the wheel hub 20 , the sealing strip 130 is pressed between the mating end face 11 of the end cover 10 and the mounting end face 22 of the wheel hub 20 , thereby achieving a sealed fit between the mating end face 11 of the end cover 10 and the mounting end face 22 of the wheel hub 20 .
[0057] Among them, the shape of the sealing strip 130 is basically consistent with the shape of the sealing groove 13, and the height of the sealing strip 130 exceeds the depth of the sealing groove 13 by about 0.2mm~0.3mm, but is not limited to this. The specific height is determined according to the hardness of the sealing strip 130 to achieve a sealed fit without a gap between the mating end face 11 and the mounting end face 22 after the end cover 10 and the wheel hub 20 are assembled.
[0058] In this embodiment, adapted to the end face structure of the end cover 10, the sealing groove 13 and the sealing strip 130 form a petal shape, but not limited to this. The shapes of the sealing groove 13 and the sealing strip 130 change with the change of the edge shape of the mating end face 11; in addition, the sealing groove 13 is divided into two, and correspondingly the sealing strip 130 includes two strips respectively embedded in the two sealing grooves 13, but not limited to this.
[0059] In some embodiments, the mating end surface 11 is provided with a mounting hole 16, and the sealing groove 13 is located outside the mounting hole 16 and spaced apart from the mounting hole 16. The mounting hole 16 can be installed with a bolt 30 to screw the end cover 10 to the wheel hub 20; the sealing groove 13 is located outside the mounting hole 16 and spaced apart from the mounting hole 16 to achieve sealing protection for the screw connection.
[0060] In some embodiments, the surface of the sealing strip 130 is coated with adhesive to achieve sealing bonding with the mounting end surface 22 of the wheel hub 20 .
[0061] The utility model also provides a wheel hub assembly, combined with Figures 1 to 10 As shown, the wheel hub assembly includes:
[0062] End cap 10;
[0063] The hub 20 is provided with a mounting end face 22 and an axial hole 23, and the inner wall of the axial hole 23 is provided with a groove ring 230;
[0064] As the hook portion 42 is inserted into the groove ring 230 , the tension ring 50 presses the hook portion 42 against the groove ring 230 , presses the matching end surface 11 against the mounting end surface 22 , and the end cover 10 and the wheel hub 20 are sealed and matched.
[0065] The wheel hub assembly adopts the above-mentioned end cover 10, and through multiple claw members 40 arranged at intervals on the ramp surface 12, and the claw members 40 are provided with radially protruding claw portions 42, so that when the end cover 10 and the wheel hub 20 are assembled, the claw portions 42 are clamped into the groove ring 230 on the inner wall of the axial hole 23 of the wheel hub 20, and the end cover 10 is hung on the wheel hub 20; through the groove 43 set on the back side of the claw portion 42, and the tightening ring 50 tightened in the groove 43 of the multiple claw members 40, when the claw portion 42 is clamped into the groove ring 230 of the wheel hub 20, the tightening ring 50 presses the claw portion 42 tightly against the groove ring 230, so that the matching end face 11 of the end cover 10 fits with the installation end face 22 of the wheel hub 20, ensuring the sealing fit between the end cover 10 and the wheel hub 20.
[0066] The wheel hub assembly of the utility model can effectively achieve the sealing fit between the wheel hub 20 and the end cover 10 through the structural improvement of the end cover 10, avoid the deformation of the plastic end cover 10 and cause a fitting gap between the wheel hub 20 and the end cover 10, the fitting quality is stable and firm, and there is no need to add bolts, apply paint and other processes, and the production cost and assembly cost are not increased. The assembly process is simple and efficient.
[0067] Furthermore, in the case where the sealing strip 130 is embedded in the mating end surface 11 of the end cover 10 , a sealed press-fit fit can be achieved between the mating end surface 11 of the end cover 10 and the mounting end surface 22 of the wheel hub 20 through the sealing strip 130 .
[0068] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. An end cap for a wheel hub of a vehicle, characterized in that: The end cap comprises: A mating end surface and a slope surface located inside the mating end surface; A plurality of claw members are arranged at intervals on the slope surface, the claw member is provided with a radially protruding claw portion, and a groove is provided on the back of the claw portion; The tightening ring is tightened in the grooves of the plurality of claw members.
2. The end cap according to claim 1, characterized in that: The hook portion is provided with an insertion chamfer, and an included angle α between the insertion chamfer and the axial direction of the hub satisfies: α<30°.
3. The end cap according to claim 1, characterized in that: The hook portion is provided with a pull-out chamfer, and an included angle β between the pull-out chamfer and the radial direction of the hub satisfies: β<10°.
4. The end cap according to claim 1, characterized in that: The clamping claw is supported on the slope surface by two legs, and the two legs are connected by a suspended back plate.
5. The end cap according to claim 1, characterized in that: The support ring and the groove are interference fit, and the interference amount I and the radius R of the support ring satisfy: R / 3<I<R / 2.
6. The end cap according to claim 1, characterized in that: The groove is a semicircular groove, and / or the tightening ring is a steel ring.
7. The end cap according to claim 1, characterized in that: The plurality of claw members are evenly spaced and arranged on the slope surface.
8. The end cap according to claim 1, characterized in that: A sealing groove is arranged on the outer edge of the matching end surface, and a sealing strip is embedded in the sealing groove.
9. The end cap according to claim 8, characterized in that The mating end surface is provided with a mounting hole, and the sealing groove is located outside the mounting hole and spaced apart from the mounting hole.
10. The end cap according to claim 8, characterized in that The surface of the sealing strip is coated with adhesive.
11. A wheel hub assembly, characterized in that: include: The end cap according to any one of claims 1 to 10; The wheel hub is provided with a mounting end surface and an axial hole, and the inner wall of the axial hole is provided with a groove ring; As the hook portion is inserted into the groove ring, the support ring presses the hook portion against the groove ring, the matching end surface is pressed against the mounting end surface, and the end cover is sealed and matched with the wheel hub.
12. The wheel hub assembly according to claim 11, characterized in that: A sealing groove is arranged on the outer edge of the mating end surface, a sealing strip is embedded in the sealing groove, and the sealing strip is pressed tightly between the mating end surface and the mounting end surface.