CN215850560U - Wheel hub structure and vehicle - Google Patents
Wheel hub structure and vehicle Download PDFInfo
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- CN215850560U CN215850560U CN202120550604.9U CN202120550604U CN215850560U CN 215850560 U CN215850560 U CN 215850560U CN 202120550604 U CN202120550604 U CN 202120550604U CN 215850560 U CN215850560 U CN 215850560U
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Abstract
The utility model discloses a hub structure and a vehicle, and belongs to the technical field of vehicles. The wheel hub structure comprises a magnesium alloy wheel hub main body and a sealing connection assembly, wherein a bolt hole and a mounting hole are formed in the magnesium alloy wheel hub main body, and the mounting hole and the bolt hole are through and coaxial. The sealing connection assembly comprises a sealing washer and a bolt, a mounting hole is formed in the middle of the sealing washer and is coaxial with the bolt hole, the bolt comprises a nut and a stud, and the stud penetrates through the mounting hole and is fixed in the bolt hole. In the case where the bolt is installed in the magnesium alloy hub body, the seal washer is located between the wall of the mounting hole and the nut. Like this, because seal ring is located between the pore wall and the nut of mounting hole, and seal ring produces elastic deformation under the extrusion of the pore wall of mounting hole and nut, consequently seal ring can block corrosive substance such as steam, impurity in the environment and enter into the bolt hole through the space, has reduced magnesium alloy wheel hub's corroded risk, has improved magnesium alloy wheel hub's life.
Description
Technical Field
The utility model belongs to the technical field of vehicles, and particularly relates to a hub structure and a vehicle.
Background
A hub is a metal component of the tire inner profile that supports the tire. The hub may comprise a steel hub and an alloy hub, depending on the material. Typically, the hub needs to be secured to the tire by a connection assembly such as a bolt. The hub is usually provided with hub bolt holes, and the hub is fixed on the tire by penetrating through the hub bolt holes through connecting pieces such as bolts during installation. Among them, the most common alloy wheel hub is the magnesium alloy wheel hub, and the magnesium alloy wheel hub is greater than the steel wheel hub because of galvanic corrosion risk, therefore need to carry out effectual sealing measure to the bolt hole of seting up in the magnesium alloy wheel hub.
At present, when sealing the magnesium alloy wheel hub bolt hole, mainly seal the bolt hole through adopting plastics lid and bolt cooperation, when the installation, connect through bolt and bolt hole, the plastics lid covers the hole department at the bolt hole to reach the effect of sealed bolt hole.
However, because there are gaps between the plastic cover and the bolt hole and between the plastic cover and the bolt, corrosive substances such as water vapor, impurities and the like in the environment can enter the bolt hole through the gaps, so that the risk of hub corrosion is increased, and the service life of the magnesium alloy hub is reduced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide a hub structure and a vehicle, which can solve the problem that corrosive substances such as water vapor, impurities and the like in the environment enter bolt holes of a hub through gaps to cause the corrosion of the hub.
In order to solve the technical problem, the utility model is realized as follows:
in a first aspect, an embodiment of the present invention provides a hub structure, where the hub structure includes a magnesium alloy hub main body and a seal connection assembly;
the magnesium alloy hub main body is provided with a bolt hole and a first mounting hole, the first mounting hole is communicated with the bolt hole, and the first mounting hole is coaxial with the bolt hole;
the sealing connection assembly comprises a sealing washer and a bolt, a second mounting hole is formed in the middle of the sealing washer, the second mounting hole is coaxial with the bolt hole, the bolt comprises a nut and a stud, the stud penetrates through the second mounting hole and is fixed in the bolt hole, and the nut is located in the first mounting hole and the second mounting hole;
under the condition that the bolt is installed in the magnesium alloy hub main body, the sealing washer is located between the hole wall of the first installation hole and the nut, and the sealing washer generates elastic deformation under the extrusion of the hole wall of the first installation hole and the nut.
Optionally, the sealing gasket comprises a first sealing portion and a second sealing portion;
the first sealing part and the second sealing part are both circular rings, the inner diameter of the first sealing part is smaller than that of the second sealing part, a first limiting surface is formed between the first sealing part and the second sealing part, and the first limiting surface faces to the hole opening of the first mounting hole;
one end of the nut, which is close to the stud, is provided with a convex shoulder, a second limiting surface is formed at the convex shoulder, the second limiting surface faces to the hole opening of the bolt hole, and the first limiting surface and the second limiting surface are in abutting contact under the condition that the bolt is installed in the magnesium alloy hub main body;
the first sealing part is a part of the sealing gasket, which is close to the hole opening of the bolt hole, and the second sealing part is a part of the sealing gasket, which is far away from the hole opening of the bolt hole.
Optionally, the outer diameters of the first sealing portion decrease in sequence along a direction close to the second sealing portion.
Optionally, the surface of the magnesium alloy hub main body is provided with a first coating, wherein the first coating is formed by painting after passivation.
Optionally, the first mounting hole and the bolt hole are machined surfaces.
Optionally, the bolt is a hexagon socket head cap steel bolt.
Optionally, the bolt comprises a second coating and a third coating;
the second coating covers the surface of the bolt, and the third coating covers the surface of the second coating, wherein the second coating is a zinc-aluminum-magnesium coating, and the third coating is an organic coating.
Optionally, a transition portion between the bolt hole and the first mounting hole has a first conical surface, a portion of the nut located on the first conical surface is a second conical surface, and the first conical surface and the second conical surface both extend in a direction close to the bolt hole.
Optionally, when the bolt is installed in the magnesium alloy hub main body, an end of the first sealing portion is located between the first conical surface and the second conical surface, and both the first conical surface and the second conical surface are in abutting contact with the end of the first sealing portion.
In a second aspect, an embodiment of the present invention provides a wheel hub structure, and the vehicle includes the wheel assist device of the second aspect.
According to the hub structure provided by the embodiment of the utility model, the sealing washer is positioned between the hole wall of the first mounting hole and the nut, and the sealing washer is elastically deformed under the extrusion of the hole wall of the first mounting hole and the nut, so that in real life, a gap between the first mounting hole formed in the magnesium alloy hub main body and the bolt is effectively filled by the sealing washer, corrosive substances such as water vapor and impurities in the environment are prevented from entering the bolt hole through the gap, the sealing washer can prevent the corrosive substances such as water vapor and impurities in the environment from entering the bolt hole through the gap, the corrosion risk of the magnesium alloy hub is reduced, and the service life of the magnesium alloy hub is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of an assembly of a hub body and seal connection assembly provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the relative positions of the hub body and the bolts provided by an embodiment of the present invention;
FIG. 3 is a top view of an embodiment of the present invention providing a sealing gasket and bolt connection;
fig. 4 is a cross-sectional view and a top view of a sealing gasket provided by an embodiment of the present invention.
Reference numerals
1-a magnesium alloy hub body; 2-sealing the connection assembly; 11-bolt holes; 12-a first mounting hole; 13-a first conical surface; 21-a sealing gasket; 22-bolt; 211-a first seal; 212-a second seal; 213-second mounting hole; 221-screw cap; 222-a stud; 223-shoulder; 224-second conical surface.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that embodiments of the utility model may be practiced otherwise than as specifically illustrated and described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
Before introducing the hub structure provided by the embodiment of the present invention, an application scenario of the hub structure provided by the embodiment of the present invention is first introduced, which is specifically as follows:
the hub structure is the primary connection between the tire and the wheel core. At present, the wheel hub structure is steel wheel hub and alloy wheel hub comparatively common, and the magnesium alloy wheel hub that includes in the alloy wheel hub has light in weight and big advantage of elasticity owing to compare in aluminum alloy wheel hub, therefore magnesium alloy wheel hub compares in aluminum alloy wheel hub, has wider application prospect in alloy wheel hub. However, the magnesium alloy hub has a higher risk of galvanic corrosion than the steel hub and the aluminum alloy hub, and therefore, an effective sealing measure for the bolt hole formed in the magnesium alloy hub is required. The embodiment of the utility model mainly introduces the sealing of the magnesium alloy hub main body in the hub structure and how to reduce the corrosion risk of the magnesium alloy hub main body in detail.
The hub structure provided by the present invention is described in detail below with reference to the accompanying drawings by specific embodiments and application scenarios thereof. Fig. 1 is an assembly schematic diagram of a magnesium alloy hub main body 1 and a seal connection assembly 2 provided by an embodiment of the present invention, and as shown in fig. 1, the hub structure includes the magnesium alloy hub main body 1 and the seal connection assembly 2, fig. 2 is a schematic diagram of relative positions of the hub main body and a bolt provided by the embodiment of the present invention, as shown in fig. 1 and fig. 2, a bolt hole 11 and a first mounting hole 12 are formed in the magnesium alloy hub main body 1, the first mounting hole 12 is communicated with the bolt hole 11, and the first mounting hole 12 is coaxial with the bolt hole 11; the seal connection assembly 2 comprises a seal gasket 21 and a bolt 22, fig. 4 is a cross-sectional view and a top view of the seal gasket provided by the embodiment of the utility model, as shown in fig. 1, fig. 2 and fig. 4, a second mounting hole 213 is formed in the middle of the seal gasket 21, the second mounting hole 213 is coaxial with the bolt hole 11, the bolt 22 comprises a nut 221 and a stud 222, the stud 222 passes through the second mounting hole 213 and is fixed in the bolt hole 11, and the nut 221 is located in the first mounting hole 12 and the second mounting hole 213; with the bolts 22 installed in the magnesium alloy hub body 1, the sealing washer 21 is located between the hole wall of the first mounting hole 12 and the nut 221, and the sealing washer 21 is elastically deformed by the pressing of the hole wall of the first mounting hole 12 and the nut 221.
Here, the magnesium alloy hub body 1 is usually connected to the tire and the wheel core by bolts 22, and therefore, in order to facilitate the connection of the magnesium alloy hub body 1 to the tire and the wheel core, the magnesium alloy hub body 1 is provided with the first mounting holes 12 and the bolt holes 11. The first mounting hole 12 is mainly used for providing a mounting space for a nut 221 included in the bolt 22, and the bolt hole 11 is mainly used for providing a mounting space for a stud 222 included in the bolt 22. Specifically, with the screwing direction of the bolt 22 as a reference, the first mounting hole 12 is disposed above the bolt hole 11, and the aperture of the first mounting hole 12 is larger than that of the bolt hole 11, and when mounting, the bolt 22 passes through the second mounting hole 213 and the bolt hole 11 in sequence to connect the sealing gasket 21 between the hole wall of the first mounting hole 12 and the nut 221. When the interference fit is generated between the sealing gasket 21 and the first mounting hole 12 and between the sealing gasket 21 and the nut 221, the sealing gasket 21 is pressed by the inner wall of the first mounting hole 12 and the nut 221 to be elastically deformed.
The bolt 22 may be a socket head cap bolt, an ultra-short socket head cap bolt, or a flower-type socket head cap bolt, which is not limited in this embodiment. The surface of the bolt 22 may be subjected to passivation, rust-proofing heat treatment, hot galvanizing treatment, and the like, but this embodiment is not limited thereto.
It should be noted that the sealing washer 21 may be made of rubber, butyronitrile, neoprene, or the like, and the embodiment is not limited herein. In addition, as shown in fig. 1 and 4, in a possible implementation manner, the sealing gasket 21 may be a single annular sealing gasket 21, when the sealing gasket is installed, an inner wall of the annular sealing gasket 21 contacts the nut 221, and an outer wall of the annular sealing gasket 21 contacts a hole wall of the first installation hole 12, so that an effect of ensuring that a bolt hole is prevented from contacting corrosive substances such as water vapor, impurities and the like is achieved.
In another possible implementation manner, the sealing gasket 21 may include a double-circular-ring-shaped sealing gasket 21, when the sealing gasket 21 is installed, an inner wall of the double-circular-ring-shaped sealing gasket 21 is in contact with the nut 221, an outer wall of the double-circular-ring-shaped sealing gasket 21 is in contact with a hole wall of the first installation hole 12, an inner wall of an upper-layer circular portion of the double-circular-ring-shaped sealing gasket 21 is in contact with the nut, and an outer wall of the upper-layer circular portion is in contact with the magnesium alloy hub main body 1, so that an effect of preventing a bolt hole from being in contact with corrosive substances such as water vapor, impurities and the like is achieved, and the embodiment is not limited herein.
It can be seen from the above embodiment that, because the sealing washer 21 is located between the hole wall of the first mounting hole 12 and the nut 221, and the sealing washer 21 elastically deforms under the extrusion of the hole wall of the first mounting hole 12 and the nut 221, in real life, the gap between the first mounting hole 12 and the bolt 22, which is formed in the magnesium alloy hub body 1, is effectively filled with the sealing washer 21, which prevents water vapor, impurities and other corrosive substances in the environment from entering the bolt hole 11 through the gap, so that the sealing washer 21 can prevent water vapor, impurities and other corrosive substances in the environment from entering the bolt hole 11 through the gap, thereby reducing the risk of corrosion of the magnesium alloy hub and prolonging the service life of the magnesium alloy hub.
Optionally, as shown in fig. 1, 2 and 4, the sealing gasket 21 includes a first sealing portion 211 and a second sealing portion 212, an aperture of the first sealing portion 211 is smaller than an aperture of the second sealing portion 212, a first limiting surface is formed between the first sealing portion 211 and the second sealing portion 212, and the first limiting surface faces the opening of the first mounting hole 12; one end of the nut 221, which is close to the stud 222, is provided with a shoulder 223, a second limiting surface is formed at the shoulder 223, the second limiting surface faces the hole opening of the bolt hole 11, and under the condition that the bolt 22 is installed in the magnesium alloy hub main body 1, the first limiting surface and the second limiting surface are in abutting contact; the first sealing portion 211 is a portion of the sealing gasket 21 close to the opening of the bolt hole 11, and the second sealing portion 212 is a portion of the sealing gasket 21 away from the opening of the bolt hole 11.
It should be noted that, as shown in fig. 1, fig. 2 and fig. 4, the first sealing portion 211 and the second sealing portion 212 are both annular, wherein the height of the first sealing portion 211 is determined by the height of the nut 221, so that the first sealing portion 211 can be adapted to the nut, the thickness of the second sealing portion 212 is greater than the horizontal gap between the first mounting hole 12 and the lower surface of the nut 221 facing the bolt hole 11, a horizontal first limiting surface is formed at the joint of the first sealing portion 211 and the second sealing portion 212, and the first limiting surface faces the upper portion of the first mounting hole 12. One end of the nut 221 near the stud 222 is provided with a shoulder 223, and a horizontal second limit surface is formed at the shoulder 223 and faces the upper part of the bolt hole 11. Under the condition that the bolt 22 is installed in the magnesium alloy hub main body 1, the first limiting surface and the second limiting surface are in abutting contact, so that corrosive substances such as water and impurities in the environment are prevented from entering the bolt hole 11 through a gap, and accumulation of corrosive media is avoided.
It should be noted that, in the above embodiment, the sealing gasket 21 is a double-ring-shaped sealing gasket 21, and compared with the single-ring-shaped sealing gasket 21, the double-ring-shaped sealing gasket 21 not only prevents corrosive substances such as water and impurities in the environment from entering the bolt hole 11 through the gap between the nut 221 and the magnesium alloy hub body 1, but also prevents corrosive substances such as water and impurities in the environment from accumulating in the first mounting hole 12.
Alternatively, as shown in fig. 4, the outer diameters of the first sealing portion 211 are sequentially decreased in a direction approaching the second sealing portion 212.
As shown in fig. 1 and 4, the outer diameter of the first sealing portion 211 of the seal gasket 21 is gradually decreased in the bolt screwing direction with reference to the screwing direction of the bolt 22, and the inner diameter of the first sealing portion 211 of the seal gasket 21 is kept constant in the bolt screwing direction, so that the outer wall of the first sealing portion 211 of the seal gasket 21 is a conical surface having a certain inclination, and is formed in a truncated cone shape with a large top and a small bottom, which is opened at the middle. The design of the circular truncated cone shape that the open-ended top is big in the middle part of the first sealing portion 211 of seal ring 21, the bottom is little can play corrosive substance such as steam, impurity in the isolated environment in the at utmost and enter into bolt hole 11 through the space, has reduced the risk that magnesium alloy wheel hub corrodes, has improved magnesium alloy wheel hub's life.
Optionally, the surface of the magnesium alloy hub main body 1 is provided with a first coating, wherein the first coating is formed by painting after passivation.
Specifically, the metal passivation is essentially that the metal surface is covered with a layer of oxide film, so that the protection capability of the metal is improved, and the passivation treatment of the metal can be realized by adopting a chemical method or an electrochemical method, which is not limited in this embodiment. The magnesium alloy hub is passivated to form a compact oxide film so that the magnesium alloy hub main body 1 is not easily oxidized any more, and the passivated magnesium alloy hub is painted to improve the corrosion resistance time of the magnesium alloy hub, wherein the first coating has the functions of wear resistance, corrosion resistance and oxidation resistance. The first coating may be a metal coating or a non-metal coating, which is not limited in this embodiment.
Alternatively, as shown in fig. 2, the first mounting hole 12 and the bolt hole 11 are machined.
Specifically, in order to ensure the assembly accuracy of the magnesium alloy hub main body 1 and the bolts 22, machined surfaces which are not processed by a spraying process are arranged in the first mounting holes 12 and the bolt holes 11.
Alternatively, as shown in fig. 1 and 2, the bolt 22 is an inner hexagonal steel bolt.
It should be noted that, in the present embodiment, a sealing washer 21 is adopted, and the sealing washer 21 needs to be screwed down during the assembly process to complete the installation, so that the use of the hexagon socket head cap screw provides an origin of force for the screwing action, thereby ensuring that the installation tool does not affect the installation of the sealing washer 21. The bolt 22 may be a socket head cap bolt, an ultra-short socket head cap bolt, or a flower-shaped socket head cap bolt, which is not limited in this embodiment.
Optionally, the bolt 22 includes a second coating and a third coating, the second coating covers the surface of the bolt 22, and the third coating covers the surface of the second coating, where the second coating is a zinc-aluminum magnesium coating, and the third coating is an organic coating.
Specifically, the zinc-aluminum-magnesium coating can avoid direct contact between the bolt 22 and the magnesium alloy hub main body 1, and plays a role in reducing potential difference, so that galvanic corrosion risk is reduced; secondly, the point difference generated when two different metals are contacted is called contact potential difference, and the contact potential difference is related to the factors of the metal material, so that the potential difference between the magnesium alloy hub main body 1 and the steel bolt 22 is larger than the potential difference between the magnesium alloy hub main body 1 and the zinc-magnesium-aluminum coating; finally, the zinc-aluminum-magnesium coating has a self-closing function, the bolt 22 rotates relative to the first conical surface 13 in the mounting and dismounting processes and rubs to easily damage the coating, so that the corrosion resistance of the coating is reduced, the zinc-aluminum-magnesium coating has a self-repairing function, alkaline zinc salt can be formed at the damaged part of the coating, the bolt 22 can still be protected, the damage of the coating generated in the mounting and dismounting processes of the bolt 22 is reduced, and the potential difference between the bolt 22 and the magnesium alloy hub main body 1 is further reduced. Therefore, the zinc-aluminum-magnesium coating layer covering the surface of the bolt 22 can reduce the potential difference between the bolt 22 and the magnesium alloy hub body 1. In addition, the organic coating is covered on the zinc-aluminum-magnesium coating of the bolt 22, so that the connection between the magnesium alloy hub main body 1 and the bolt 22 can be isolated, the potential difference can be reduced, and the galvanic corrosion risk can be further reduced. The organic coating may be epoxy ester, polyester, acrylate, etc., which is not limited in this embodiment.
Alternatively, as shown in fig. 2, the transition portion between the bolt hole 11 and the first mounting hole 12 has a first conical surface 13, the portion of the nut 221 located on the first conical surface 13 is a second conical surface 224, and both the first conical surface 13 and the second conical surface 224 extend in the direction close to the bolt hole 11.
Specifically, as shown in fig. 1 and 2, based on the screwing direction of the bolt 22, a transition portion is located at a connection portion between the first mounting hole 12 and the bolt hole 22 along the screwing direction of the bolt, the diameter of the connection portion decreases in sequence along the screwing direction of the bolt 22, and the transition portion has a first conical surface 13. The nut 221 has a transition with the stud 222 in the screwing direction of the bolt 22, and the transition has a second conical surface 224. The first conical surface 13 and the second conical surface 224 are respectively the mounting surfaces of the magnesium alloy hub main body 1 and the bolts 22, and in order to ensure the assembling precision, the mounting surfaces are machined surfaces which are not subjected to paint spraying treatment.
It should be noted that, when the bolt 22 is installed in the magnesium alloy hub main body 1, the contact area between the first conical surface 13 and the second conical surface 224 is larger than the contact area between the ordinary bolt 22 and the bolt hole 11, and since the contact area between the bolt 22 and the magnesium alloy hub main body 1 is increased, it is further avoided that corrosive substances such as water vapor and impurities in the air enter the bolt hole 11 through a gap, the corrosion risk of the magnesium alloy hub is reduced, and the service life of the magnesium alloy hub is prolonged.
Alternatively, as shown in fig. 1 and 4, in the case where the bolt 22 is installed in the magnesium alloy hub main body 1, the end of the first sealing portion 211 is located between the first conical surface 13 and the second conical surface 224, and both the first conical surface 13 and the second conical surface 224 are in abutting contact with the end of the first sealing portion 211.
Specifically, when the interference fit between the sealing gasket 21 and the first mounting hole 12 and between the sealing gasket 21 and the nut 221 is achieved, the sealing gasket 21 is pressed by the inner wall of the first mounting hole 12 and the nut 221 to be elastically deformed, and the end of the first sealing portion 211 is pushed into the space between the first conical surface 13 and the second conical surface 224. The end of the first sealing portion 211 entering between the first conical surface 13 and the second conical surface 224 provides a good filling effect for the gap between the first conical surface 13 and the second conical surface 224. The end part of the first sealing part 211 plays a good filling role in the gap between the first conical surface 13 and the second conical surface 224, so that corrosive substances such as water vapor and impurities in the environment are prevented from entering the gap between the first conical surface 13 and the second conical surface 224 through the gap, and the corrosion risk to the magnesium alloy hub is reduced.
It can be seen from the above embodiment that, because the sealing washer 21 is located between the hole wall of the first mounting hole 12 and the nut 221, and the sealing washer 21 elastically deforms under the squeezing of the hole wall of the first mounting hole 12 and the nut 221, in real life, the gap between the first mounting hole 12 and the bolt 22 formed in the magnesium alloy hub main body 1 is effectively filled with the sealing washer 21, so that corrosive substances such as water vapor and impurities in the environment are prevented from entering the bolt hole 11 through the gap, and therefore, the sealing washer 21 can prevent corrosive substances such as water vapor and impurities in the environment from entering the bolt hole 11 through the gap, reduce the risk of corrosion of the magnesium alloy hub, also reduce the galvanic corrosion potential difference at the connection part of the magnesium alloy hub main body 1 and the bolt 22, and prolong the service life of the magnesium alloy hub.
In addition, in order to ensure convenient disassembly and maintenance of the hub structure, the utility model adopts the sealing washer 21, the sealing washer 21 needs to be installed along with the screwing process, and therefore, the hexagon socket head cap screw 22 is adopted, so that the installation tool is ensured not to influence the installation of the sealing washer 21.
It should be further noted that an embodiment of the present invention further provides a vehicle, where the vehicle includes the wheel hub structure described in the foregoing embodiment, and beneficial effects of the vehicle are consistent with those of the wheel hub structure, and no further description is given to the embodiment of the present invention.
It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the means in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in a reverse order depending on the functions involved, e.g., the described methods may be performed in an order different than that described, and various steps may also be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A hub structure, characterized in that it comprises a magnesium alloy hub body (1) and a sealing connection assembly (2);
the magnesium alloy hub main body (1) is provided with a bolt hole (11) and a first mounting hole (12), the first mounting hole (12) is communicated with the bolt hole (11), and the first mounting hole (12) is coaxial with the bolt hole (11);
the sealing connection assembly (2) comprises a sealing washer (21) and a bolt (22), a second mounting hole (213) is formed in the middle of the sealing washer (21), the second mounting hole (213) is coaxial with the bolt hole (11), the bolt (22) comprises a nut (221) and a stud (222), the stud (222) penetrates through the second mounting hole (213) to be fixed in the bolt hole (11), and the nut (221) is located in the first mounting hole (12) and the second mounting hole (213);
under the condition that the bolt (22) is installed in the magnesium alloy hub main body (1), the sealing washer (21) is located between the hole wall of the first installation hole (12) and the nut (221), and the sealing washer (21) generates elastic deformation under the extrusion of the hole wall of the first installation hole (12) and the nut (221).
2. A hub structure according to claim 1, wherein the sealing gasket (21) comprises a first sealing portion (211) and a second sealing portion (212);
the first sealing part (211) and the second sealing part (212) are both annular, the inner diameter of the first sealing part 1 is smaller than that of the second sealing part (212), a first limiting surface is formed between the first sealing part (211) and the second sealing part (212), and the first limiting surface faces to the hole opening of the first mounting hole (12);
one end, close to the stud (222), of the nut (221) is provided with a convex shoulder (223), a second limiting surface is formed at the convex shoulder (223), the second limiting surface faces to an orifice of the bolt hole (11), and the first limiting surface and the second limiting surface are in abutting contact under the condition that the bolt (22) is installed in the magnesium alloy hub main body (1);
the first sealing part (211) is a part of the sealing gasket (21) close to the hole of the bolt hole (11), and the second sealing part (212) is a part of the sealing gasket (21) far away from the hole of the bolt hole (11).
3. A hub structure according to claim 2, characterized in that the outer diameter of the first sealing portion (211) decreases in order in the direction of approaching the second sealing portion (212).
4. The hub sealing structure according to claim 1, characterized in that the surface of the magnesium alloy hub body (1) is provided with a first coating, wherein the first coating is formed by a passivation post-painting treatment.
5. The hub sealing structure according to claim 4, characterized in that the first mounting hole (12) and the bolt hole (11) are machined.
6. A hub structure according to claim 1, characterized in that the bolts (22) are socket head cap steel bolts.
7. A hub structure according to claim 1, characterized in that the bolts (22) comprise a second and a third coating;
the second coating covers the surface of the bolt (22), and the third coating covers the surface of the second coating, wherein the second coating is a zinc-aluminum-magnesium coating, and the third coating is an organic coating.
8. A hub structure according to claim 2, characterized in that the transition between the bolt hole (11) and the first mounting hole (12) has a first conical surface (13), the part of the nut (221) located on the first conical surface (13) is a second conical surface (224), and the first conical surface (13) and the second conical surface (224) each extend in a direction close to the bolt hole (11).
9. The hub structure according to claim 8, wherein, with the bolts (22) installed in the magnesium alloy hub main body (1), an end of the first seal portion (211) is located between the first conical surface (13) and the second conical surface (224), and the first conical surface (13) and the second conical surface (224) are each in abutting contact with an end of the first seal portion (211).
10. A vehicle, characterized in that the vehicle comprises a hub structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550604.9U CN215850560U (en) | 2021-03-17 | 2021-03-17 | Wheel hub structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550604.9U CN215850560U (en) | 2021-03-17 | 2021-03-17 | Wheel hub structure and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215850560U true CN215850560U (en) | 2022-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120550604.9U Active CN215850560U (en) | 2021-03-17 | 2021-03-17 | Wheel hub structure and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215850560U (en) |
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2021
- 2021-03-17 CN CN202120550604.9U patent/CN215850560U/en active Active
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