Hub cover

Abstract

The utility model discloses a wheel hub cover which is provided with an annular plane and a plurality of through holes, and the through holes penetrate through the annular plane. The at least one first protrusion is connected to the annular plane, protrudes out of the annular plane and is used for making contact with the sealing gasket and pressing the sealing gasket tightly; the first protrusion is provided with a starting end and an ending end and extends from the starting end along the annular plane, and when extending, the first protrusion avoids the through hole till the ending end intersects with the starting end and is in seamless connection with the starting end, and a closed surrounding structure is formed. The area size of the first bulge is smaller than that of the annular plane; therefore, the technical problems that the fastening force borne by the hub cover is relatively large, the hub cover is broken, and the service life is shortened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a hub cover. Background Art

[0002] The wheel hub cap is an important part of the vehicle, mainly used to protect the wheel hub bearing and brake system of the vehicle, prevent dust, mud and water and other impurities from entering, so as to ensure the normal driving of the vehicle;

[0003] The hub cover is connected to the wheel hub by bolts. In order to ensure the sealing between the hub cover and the wheel hub and prevent the leakage of lubricating oil, a sealing gasket is usually placed between the hub cover and the wheel hub.

[0004] The sealing gasket is a circular sheet structure. Both the hub cover and the wheel hub have planes that fit with the sealing gasket. The planes are circular planes. The sealing gasket fits with the two circular planes. The hub cover, the sealing gasket and the wheel hub are tightly fitted by tightening the bolts.

[0005] Although such a structure can achieve sealing and effectively prevent the leakage of lubricating oil, due to the circular plane, the contact area between the wheel hub cover and the gasket is large. When tightening the bolts, the operator usually applies full force to ensure the sealing, resulting in a large tightening force until the bolts have no room for rotation, resulting in greater force on the wheel hub cover, cracks, and reduced service life. Utility Model Content

[0006] In view of the above-mentioned deficiencies existing in the related art, an object is to provide a hub cover to solve the technical problem that the hub cover in the related art is subjected to relatively large fastening force, is prone to cracking, and has a reduced service life.

[0007] The technical solution to achieve the purpose is: a hub cover, the hub cover has a circular plane and a plurality of through holes, the through holes penetrate the circular plane; and further includes:

[0008] At least one first protrusion connected to the annular plane and protruding from the annular plane, and used for contacting with the sealing gasket and pressing the sealing gasket;

[0009] The first protrusion has a starting end and an ending end, and starts from the starting end and extends along the annular plane, avoiding the through hole when extending, until the ending end intersects with the starting end, seamlessly connected, and forms a closed surrounding structure;

[0010] The area size of the first protrusion is smaller than the area size of the annular plane.

[0011] Further: the number of the first protrusion is one, which is arranged in the plane space formed by the circular plane and has a spacing distance from the edge of the plane space.

[0012] Further: the first protrusion includes: a plurality of first parts, a plurality of second parts and a plurality of third parts;

[0013] The first portion is a portion avoiding the through hole;

[0014] The second portion is a portion provided between the through holes;

[0015] The third part is a part connecting the first part and the second part;

[0016] The structures of the first part, the second part and the third part are different.

[0017] Further: the number of the first parts is six, which are first arc segments, and are arranged along the arc shape of the through hole and spaced one by one with the through hole;

[0018] The number of the second parts is six, which are second arc segments, arranged between the through holes and spaced apart from the through holes;

[0019] The number of the third parts is twelve, which are third arc segments connecting the first part and the second part;

[0020] The expanded length dimension of the second arc segment is greater than the expanded length dimension of the first arc segment and greater than the expanded length dimension of the third arc segment.

[0021] Further: the first part, the second part and the third part have the same height dimension A and the same width dimension B;

[0022] Height dimension A is 0.3-1mm;

[0023] The width dimension B is 0.5-2 mm.

[0024] Further: it also includes: a plurality of second protrusions, which are arranged one-to-one with the through holes and are arranged one-to-one opposite to the first part;

[0025] The sum of the area sizes of the second protrusion and the first protrusion is smaller than the area size of the annular plane.

[0026] Further: the number of the second protrusions is six, which are fourth arc segments, and are arranged one-to-one with the through hole along the arc shape of the through hole, and the second protrusions are arranged one-to-one with the first part opposite to each other.

[0027] Furthermore: the height dimension C and the width dimension D of the second protrusion are the same as those of the first part.

[0028] Furthermore: the height dimension C of the second protrusion is 0.3-1 mm, and the width dimension D is 0.5-2 mm.

[0029] Further: it also includes: a flange; and a cover body connected to the flange and having an inner cavity between the cover body and the flange;

[0030] The flange is provided with the annular plane, the first protrusion and the six through holes;

[0031] The through hole is used for inserting a bolt, and the bolt locks the sealing gasket, the wheel hub and the flange, and the first protrusion presses the sealing gasket onto the wheel hub.

[0032] The above technical solution has the following beneficial effects: a hub cover, compared with the related art, is provided with a first protrusion, the first protrusion is connected to the circular ring plane and protrudes out of the circular ring plane;

[0033] The first protrusion has a starting end and an ending end, and starts from the starting end and extends along the circular ring plane, avoiding the through hole when extending, until the ending end intersects with the starting end, seamlessly connected, and forms a closed surrounding structure, which is conducive to forming a seal after the sealing gasket is compressed;

[0034] When the first protrusion contacts the sealing gasket, since the area of ​​the first protrusion is smaller than the area of ​​the annular plane, the contact area between the first protrusion and the sealing gasket is relatively small. When the same tightening force is applied, the smaller the contact area, the greater the pressing force on the sealing gasket, thereby achieving the purpose of tightening and ensuring the sealing performance. Therefore, it is possible to reduce the tightening force on the hub cover, reduce the probability of cracking, extend the service life, and reduce the cost.

[0035] Thereby overcoming the technical problem that the hub cover is subjected to relatively large fastening force, which may cause cracking and reduce the service life, and achieving the technical effect of reducing the fastening force on the hub cover, reducing the probability of cracking, extending the service life and reducing the cost, and having practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of the structure of the hub cover;

[0037] Figure 2 for Figure 1 Left view of

[0038] Figure 3 for Figure 2 EE cross-sectional view in;

[0039] Figure 4 for Figure 3 A local enlarged schematic diagram of part F in FIG.

[0040] Figure 5 An exploded view of the hub cover, gasket, bolts and hub;

[0041] Figure 6 for Figure 5 Schematic diagram of the combined structure;

[0042] In the figure: 10. first protrusion, 11. first part, 12. second part, 13. third part, 20. second protrusion, 100. circular plane, 101. edge, 200. through hole, 300. sealing gasket, 400. bolt, 500. wheel hub, 1000. flange, 2000. cover body, 3000. inner cavity. DETAILED DESCRIPTION

[0043] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0044] A hub cover solves the technical problem in the related art that the hub cover is subjected to relatively large fastening force, cracks, and reduces the service life. The hub cover can be manufactured and used, and achieves the positive effects of reducing the fastening force on the hub cover, reducing the probability of cracking, extending the service life, and reducing the cost. The overall idea is as follows:

[0045] One implementation method:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown; a hub cover, the hub cover has a circular plane 100 and a plurality of through holes 200, the through holes 200 pass through the circular plane 100; and further includes:

[0047] At least one first protrusion 10, connected to the annular plane 100, protruding from the annular plane 100, and used for contacting with the sealing gasket 300 to press the sealing gasket 300;

[0048] The first protrusion 10 has a starting end and an ending end, and starts from the starting end and extends along the annular plane 100, avoiding the through hole 200 during the extension, until the ending end intersects with the starting end, seamlessly connected, and forms a closed surrounding structure;

[0049] The area size of the first protrusion 10 is smaller than the area size of the annular plane 100;

[0050] Specifically, during implementation, the first protrusion 10 has a starting end and an ending end, and starts from the starting end and extends along the annular plane 100, avoiding the through hole 200 when extending, until the ending end intersects with the starting end, seamlessly connected, and forms a closed surrounding structure, which is conducive to forming a seal after the sealing gasket 300 is compressed, thereby ensuring the sealing performance;

[0051] When the first protrusion 10 contacts the sealing gasket 300, since the area of ​​the first protrusion 10 is smaller than the area of ​​the annular plane 100, the contact area between the first protrusion 10 and the sealing gasket 300 is relatively small. When the same tightening force is applied, the smaller the contact area, the greater the pressing force on the sealing gasket 300 (the principle is like a nail with a pointed head and a nail without a pointed head, when subjected to the same knocking force, the insertion depths are different, and the nail with a pointed head will be inserted deeper), the purpose of tightening is achieved, and the sealing performance is guaranteed. Therefore, it is possible to reduce the tightening force on the hub cover, reduce the probability of cracking, extend the service life, and reduce the cost;

[0052] Another embodiment:

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown; during implementation, the number of the first protrusion 10 is one, which is arranged in the plane space formed by the circular plane 100, and has a spacing distance from the edge 101 of the plane space; the position is controlled so that the first protrusion 10 is approximately in the middle position of the circular plane 100, the purpose is that when the first protrusion 10 contacts the sealing gasket 300, the edge 101 is in a suspended state, when subjected to the pressure of the bolt 400, since the first protrusion 10 is in the middle position of the circular plane 100, the wheel hub cover is relatively evenly stressed, and the force will not be biased to the edge 101 on one side, thereby reducing the probability of rupture at the flange 1000 on the wheel hub cover;

[0054] The first protrusion 10 includes: a plurality of first parts 11, a plurality of second parts 12 and a plurality of third parts 13; the first part 11 is a part avoiding the through hole 200; the second part 12 is a part arranged between the through holes 200; the third part 13 is a part connecting the first part 11 and the second part 12; the first part 11, the second part 12 and the third part 13 have different structures; the three different parts are conducive to the first protrusion 10 being arranged along the shape of the circular plane 100 and the through hole 200, and the arrangement is smoother and relatively beautiful;

[0055] The number of the first parts 11 is six, which are first arc segments, and are arranged one-to-one with the through hole 200 along the arc shape of the through hole 200; the number of the second parts 12 is six, which are second arc segments, and are arranged between the through holes 200 and are arranged at intervals with the through hole 200; the number of the third parts 13 is twelve, which are third arc segments, connecting the first part 11 and the second part 12; the unfolded length dimension of the second arc segment is greater than the unfolded length dimension of the first arc segment and greater than the unfolded length dimension of the third arc segment; the arrangement of different arc segments is conducive to the arrangement along the shape of the circular plane 100 and the through hole 200, and the arrangement is smoother and relatively beautiful;

[0056] The first part 11, the second part 12 and the third part 13 have the same height dimension A and the same width dimension B; the height dimension A is 0.3-1 mm; the width dimension B is 0.5-2 mm; the dimensions are controlled so that the area dimension of the first protrusion 10 is smaller than the area dimension of the circular plane 100 (the area dimension here refers to, Figure 2 As shown in the figure, the plane area size formed by the plane projection of the first protrusion 10 and the annular plane 100), the contact area between the first protrusion 10 and the sealing gasket 300 is relatively small. When the same fastening force is applied, the smaller the contact area, the greater the pressing force on the sealing gasket 300, thereby reducing the fastening force on the hub cover (for example, when the first protrusion 10 is not provided, a force of 50 kg needs to be applied, and after the first protrusion 10 is added, only a force of 35 kg needs to be applied). Moreover, after the fastening force is reduced, the purpose of pressing the sealing gasket 300 to ensure the sealing performance can also be achieved;

[0057] Another embodiment:

[0058] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown; during implementation, a plurality of second protrusions 20 are arranged one-to-one with the through hole 200, and are arranged one-to-one opposite to the first portion 11;

[0059] The sum of the area dimensions of the second protrusion 20 and the first protrusion 10 is smaller than the area dimension of the annular plane 100 (the area dimension here refers to, Figure 2 As shown, after the plane projection of the first protrusion 10, the second protrusion 20 and the annular plane 100, the plane area size) is formed, so that the contact area between the first protrusion 10 and the second protrusion 20 and the sealing gasket 300 is relatively small. When the same fastening force is applied, the smaller the contact area, the greater the pressing force on the sealing gasket 300, thereby reducing the fastening force on the hub cover;

[0060] The number of the second protrusions 20 is six, which are fourth arc segments, and are arranged one-to-one with the through hole 200 along the arc shape of the through hole 200, and the second protrusions 20 and the first portion 11 are arranged one-to-one opposite to each other;

[0061] The height dimension C and the width dimension D of the second protrusion 20 are the same as those of the first portion 11; the height dimension C of the second protrusion 20 is 0.3-1 mm, and the width dimension D is 0.5-2 mm;

[0062] A second protrusion 20 is provided, and the size of the second protrusion 20 is controlled to play a balancing role. When subjected to the pressure of the bolt 400, the through hole 200 is supported by the first portion 11 and the second protrusion 20, so that the hub cover is relatively evenly stressed, and the stress will not be biased toward the edge 101 on one side, thereby reducing the probability of cracking at the flange 1000 on the hub cover;

[0063] Another embodiment:

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown; when implemented, it also includes: a flange 1000; and a cover 2000, connected to the flange 1000, and having an inner cavity 3000 between the cover and the flange 1000;

[0065] The flange 1000 has the annular plane 100, the first protrusion 10 and the six through holes 200;

[0066] The through hole 200 is used to penetrate the bolt 400, and the bolt 400 locks the sealing gasket 300, the wheel hub 500 and the flange 1000, and the first protrusion 10 presses the sealing gasket 300 onto the wheel hub 500;

[0067] The bolt 400 is inserted through the through hole 200, and the bolt 400 passes through the sealing gasket 300 and is threadedly connected to the wheel hub 500. The bolt 400 is locked, and the first protrusion 10 and the second protrusion 20 are in contact with the sealing gasket 300. The first protrusion 10 and the second protrusion 20 press the sealing gasket 300 onto the wheel hub 500 to ensure the sealing performance. At the same time, since the sum of the area sizes of the second protrusion 20 and the first protrusion 10 is smaller than the area size of the annular plane 100, the contact area between the first protrusion 10 and the second protrusion 20 and the sealing gasket 300 is relatively small. When the same tightening force is applied, the smaller the contact area, the greater the pressing force on the sealing gasket 300, thereby reducing the tightening force on the flange 1000. The force on the flange 1000 is relatively uniform, which reduces the probability of rupture at the flange 1000.

[0068] The sealing gasket 300, the bolt 400 and the wheel hub 500 are common structures in the prior art, and are not the inventive point of the present invention. They are only for better describing the present invention and facilitating understanding of the technical solution of the present invention. After reading the disclosed content, ordinary technicians in the field can directly and unambiguously know how to set them without creative labor or excessive experiments.

[0069] The working principle is as follows: the first protrusion 10 is connected to the circular ring-shaped plane 100 and protrudes from the circular ring-shaped plane 100;

[0070] The first protrusion 10 has a starting end and an ending end, and extends from the starting end along the annular plane 100, avoiding the through hole 200 when extending, until the ending end intersects with the starting end, seamlessly connected, and forms a closed surrounding structure, which is conducive to forming a seal after the sealing gasket 300 is compressed, thereby ensuring the sealing performance;

[0071] When the first protrusion 10 contacts the sealing gasket 300, since the area of ​​the first protrusion 10 is smaller than the area of ​​the annular plane 100, the contact area between the first protrusion 10 and the sealing gasket 300 is relatively small. When the same tightening force is applied, the smaller the contact area, the greater the pressing force on the sealing gasket 300, thereby achieving the purpose of tightening, ensuring the sealing performance, and reducing the tightening force on the hub cover, thereby reducing the probability of cracking, extending the service life, and reducing the cost;

[0072] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the drawings and are only for the convenience of description or simplified description, rather than indicating specific directions that must be possessed; the operation process described in the embodiments is not an absolute usage procedure and corresponding adjustments may be made in actual use;

[0073] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the relevant field; the words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation, but indicate that there is at least one, which needs to be determined according to the content of the embodiment;

[0074] The above is only a preferred specific implementation method, but the protection scope is not limited to it. Any technician familiar with this technical field can make equivalent substitutions or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the protection scope.

Claims

1. A hub cover, the hub cover having a circular ring-shaped plane (100) and a plurality of through holes (200), wherein the through holes (200) penetrate the circular ring-shaped plane (100); characterized in that: Also includes: At least one first protrusion (10) connected to the annular plane (100), protruding from the annular plane (100) and used to contact the sealing gasket (300) and press the sealing gasket (300); The first protrusion (10) has a starting end and an ending end, and extends from the starting end along the annular plane (100), avoiding the through hole (200) when extending, until the ending end intersects with the starting end, seamlessly connected, and forms a closed surrounding structure; The area size of the first protrusion (10) is smaller than the area size of the annular plane (100).

2. A hub cover according to claim 1, characterized in that: The number of the first protrusion (10) is one, and it is arranged in the plane space formed by the annular plane (100), and is spaced apart from the edge (101) of the plane space.

3. A hub cover according to claim 2, characterized in that: The first protrusion (10) comprises: a plurality of first parts (11), a plurality of second parts (12) and a plurality of third parts (13); The first portion (11) is a portion that avoids the through hole (200); The second portion (12) is a portion provided between the through holes (200); The third part (13) is a part connecting the first part (11) and the second part (12); The structures of the first part (11), the second part (12) and the third part (13) are different.

4. A hub cover according to claim 3, characterized in that: The number of the first parts (11) is six, which are first arc segments, and are arranged along the arc shape of the through hole (200) and spaced one-to-one with the through hole (200); The number of the second parts (12) is six, which are second arc-shaped segments, and are arranged between the through holes (200) and spaced apart from the through holes (200); The number of the third parts (13) is twelve, which are third arc segments connecting the first part (11) and the second part (12); The expanded length dimension of the second arc segment is greater than the expanded length dimension of the first arc segment and greater than the expanded length dimension of the third arc segment.

5. A hub cover according to claim 4, characterized in that: The first part (11), the second part (12) and the third part (13) have the same height dimension A and the same width dimension B; Height dimension A is 0.3-1mm; The width dimension B is 0.5-2 mm.

6. A hub cover according to claim 3, characterized in that: Also includes: A plurality of second protrusions (20), arranged one-to-one with the through holes (200), and arranged one-to-one opposite to the first parts (11); The sum of the area dimensions of the second protrusion (20) and the first protrusion (10) is smaller than the area dimension of the annular plane (100).

7. A hub cover according to claim 6, characterized in that: The number of the second protrusions (20) is six, which are fourth arc segments and are arranged one-to-one with the through hole (200) along the arc shape of the through hole (200). The second protrusions (20) and the first part (11) are arranged one-to-one with each other.

8. A hub cover according to claim 7, characterized in that: The height dimension C and the width dimension D of the second protrusion (20) are the same as those of the first portion (11).

9. A hub cover according to claim 8, characterized in that: The second protrusion (20) has a height dimension C of 0.3-1 mm and a width dimension D of 0.5-2 mm.

10. A hub cover according to claim 1, 5 or 9, characterized in that: Also includes: A flange (1000); and a cover (2000) connected to the flange (1000) and having an inner cavity (3000) between the cover and the flange (1000); The flange (1000) has the annular plane (100), the first protrusion (10) and the six through holes (200); The through hole (200) is used to insert a bolt (400), the bolt (400) locks the sealing gasket (300), the wheel hub (500) and the flange (1000), and the first protrusion (10) presses the sealing gasket (300) onto the wheel hub (500).

Images