A lightweight automobile wheel hub

Abstract

The invention relates to the field of automobile hubs, and in particular to a lightweight automobile hub, comprising a rotating main shaft, a first rotating disk fixedly connected to the right end of the rotating main shaft, a plurality of connecting shafts evenly distributed on the first rotating disk, the connecting shaft fixedly connected to the first rotating disk, an air bag wrapped around the outer wall of the connecting shaft, a second rotating disk installed on the connecting shaft, a plurality of through holes opened on the second rotating disk, the connecting shaft slidingly connected to the second rotating disk through the through holes, the connecting shaft is used to drive the second rotating disk to rotate, a protective shell is provided on the right side of the second rotating disk, the protective shell is fixedly connected to the second rotating disk, the second rotating disk and the side wall of the protective shell are wrapped with a rubber tire, by wrapping the air bag on the connecting shaft, the chassis height of the vehicle is increased when the air bag is inflated, so as to avoid the situation that high obstacles scratch or stab the chassis, and at the same time, when the tire starts and stops or passes through an uneven road section, the inflated air bag changes the rigid contact when the connecting shaft drives the second rotating disk to rotate into a flexible contact, thereby playing a role of buffering and vibration reduction.

Description

Technical Field

[0001] The invention relates to the field of automobile wheels, and in particular to a lightweight automobile wheel. Background Art

[0002] The wheel hub is a cylindrical metal part with the inner contour of the tire supporting the tire, and the center is mounted on the shaft. The wheel hub is divided into different types according to the diameter, width, molding method, etc. Since the wheel hub bears most of the load generated during the driving of the car, the structure of the wheel hub greatly affects the performance of the car. Patent No.: CN111873701A discloses a lightweight automobile wheel hub, including a spacer, a leak hole and a wheel disc, the interior of the spacer is provided with a main wheel, and a support block is fixed inside the main wheel, a heat dissipation mechanism is installed at the rear end of the leak hole, and the leak hole is located in the middle of the support block, and a reinforcing rib is arranged inside the support block, and the heat dissipation mechanism includes a fixing block and a connecting block, and the inside of the connecting block A fixing block is fixed thereto, a protective shell is installed at the front end of the wheel disc, and the wheel disc is located inside the supporting block, a bolt hole is arranged inside the wheel disc, and a wiring harness mechanism is installed on the side of the wheel disc away from the center line of the wheel disc. In the present invention, the tire and the edge of the main wheel can be effectively separated by the spacer, thereby reducing the wear between the tire and the main wheel. At the same time, the gap between the tire and the main wheel can be effectively reduced to prevent dust or particles from entering, which can easily increase the mechanical wear between the main wheel and the tire and increase the wear rate of the tire. However, the existing wheel hub does not take into account the use environment of lightweight vehicles used by children, and a rigidly connected wheel hub can easily injure children when the vehicle starts or stops or passes through an uneven road section. Summary of the invention

[0003] In order to avoid the use of rigidly connected wheels to injure children when the vehicle starts or stops or passes through uneven roads, and to make up for the defects of the wheels of lightweight vehicles for children, the following technical scheme is proposed: a lightweight automobile wheel hub, including a rotating main shaft, a first turntable is fixedly connected to the right end of the rotating main shaft, a plurality of connecting shafts are evenly distributed on the first turntable, the connecting shaft is fixedly connected to the first turntable, an airbag is wrapped around the outer wall of the connecting shaft, a second turntable is installed on the connecting shaft, a plurality of through holes are opened on the second turntable, the connecting shaft is slidingly connected to the second turntable through the through holes, the connecting shaft is used to drive the second turntable to rotate, a protective shell is provided on the right side of the second turntable, the protective shell is fixedly connected to the second turntable, the protective shell forms a closed space inside the wheel hub to prevent external dust and impurities from affecting the operation of the internal mechanism, and the second turntable and the side wall of the protective shell are wrapped with a rubber tire.

[0004] Specifically, a ventilation groove is provided inside the rotating main shaft, and the ventilation groove is connected to the airbag. The user can inflate and deflate the airbag through the ventilation groove according to needs. When the airbag is inflated, it can drive the rotating main shaft to rise, thereby increasing the chassis height of the vehicle to prevent higher obstacles from scratching or stabbing the chassis. At the same time, the inflated airbag causes the connecting shaft to drive the second turntable to rotate, changing from rigid contact to flexible contact when the tire starts and stops or passes through uneven roads, thereby playing a role in buffering and vibration reduction.

[0005] Specifically, a third turntable is provided in the gap between the first turntable and the second turntable, the third turntable is fixedly connected to the second turntable, a first annular groove is provided on the third turntable, a plurality of balls are provided in the first annular groove, the third turntable is in rolling contact with the first turntable through the balls, and by providing the third turntable in the gap, the sliding friction between the second turntable and the center of the first turntable is converted into rolling friction, thereby reducing the friction force and making the transmission between the second turntable and the first turntable smoother and more labor-saving.

[0006] Specifically, a plurality of circular grooves are provided on the inner wall of the protective shell close to the second turntable, and the grooves correspond to the connecting shafts one by one. The circular grooves have the same diameter as the through hole. The circular grooves provided on the inner wall of the protective shell allow the portion of the connecting shaft that exceeds the second turntable to rotate in the circular grooves, thereby limiting the horizontal displacement of the connecting shaft and reducing the shaking amplitude of the tire when rolling.

[0007] Specifically, the right end of the connecting shaft is fixedly connected to a limiting plate, and the side wall of the limiting plate is fixedly connected to a limiting stop ring. A second annular groove is provided on the end face where the limiting stop ring contacts the inner wall of the protective shell. A plurality of balls are arranged in the second annular groove. The balls are in rolling contact with the inner wall of the protective shell. Through the balls on the limiting stop ring, the connecting shaft is in rolling contact when it slides and rotates in the circular groove of the protective shell, thereby reducing friction and extending the service life of the wheel hub.

[0008] Specifically, the limit plate rolls in the circular groove of the protective shell through the ball on the limit stop ring. There is a gap between the limit stop ring and the edge of the circular groove. The limit stop ring slides in the area restricted by the annular block and the circular groove. When the airbag is inflated, the connection height between the connecting shaft and the second turntable and the protective shell changes. The limit stop ring at the end of the connecting shaft cooperates with the annular block in the protective shell to limit the floating range of the connecting shaft in the vertical direction, so that the connection between the connecting shaft and the second turntable and the protective shell will not derail, thereby improving the stability of the hub structure.

[0009] Specifically, an opening is provided on one side of the airbag close to the connecting shaft, an air pipe is fixedly connected to the opening, and the air pipe is fixedly connected to the ventilation groove. The air pipe is used to make the flow rate of the high-pressure gas entering the airbag from the ventilation groove more uniform, so that the airbag intake is smoother.

[0010] Specifically, the outside of the airbag is wrapped with nitrile rubber. When the acrylonitrile content of the nitrile rubber is 39%, the air tightness is equivalent to that of IIR rubber, and the air tightness is better. A hydrogenated nitrile rubber is preferably used here. Hydrogenated nitrile rubber has better elasticity and wear resistance, and prolongs the service life of the wheel hub.

[0011] Specifically, the protective shell has a split structure, a threaded groove is provided in the middle of the protective shell, and the separate parts of the protective shell are fixedly connected by bolts. Since the circular groove provided on the protective shell has a concave-convex structure, the protective shell with a split structure is easier and more convenient to install and disassemble, and is convenient for users to perform repairs and replacements.

[0012] Specifically, the second turntable and the bottom edge of one side close to each other outside the protective shell are fixedly connected with a fixing ring, and a plurality of bolts are installed on the fixing ring. The second turntable and the protective shell are tightly fitted and fixed by bolt connection, making the wheel hub as a whole more stable and durable.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By wrapping the airbag on the connecting shaft, the chassis height of the vehicle is raised when the airbag is inflated, preventing the chassis from being scratched or stabbed by higher obstacles;

[0015] 2. When the tire starts or stops or passes through an uneven road section, the inflated airbag causes the connecting shaft to drive the second turntable to rotate, changing from rigid contact to flexible contact, thereby playing a role in buffering and vibration reduction.

[0016] 3. The diameter of the connecting shaft is designed to be smaller than the diameter of the through hole on the second turntable. When the car starts or encounters an obstacle on the road causing the wheel hub to stop suddenly, the connecting shaft can have a buffering effect inside the through hole, reducing damage to the user when the car starts or stops suddenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a lightweight automobile wheel hub of the present invention;

[0018] Figure 2 A cross-sectional view of a lightweight automobile wheel hub of the present invention;

[0019] Figure 3 A lightweight automobile wheel hub according to the present invention Figure 2 Cross-sectional view of the airbag in the middle BB direction when it is not inflated;

[0020] Figure 4 A lightweight automobile wheel hub according to the present invention Figure 2 Cross-sectional view of the airbag inflated in the middle BB direction;

[0021] Figure 5 This is a partial enlarged view of the connection between the connecting shaft and the circular groove of a lightweight automobile wheel hub of the present invention;

[0022] Figure 6 This is a partial enlarged view of the connection between the second rotating disk and the protective shell of a lightweight automobile wheel hub of the present invention;

[0023] Figure 7 This is a partial enlarged view of the connection between the airbag and the connecting shaft of a lightweight automobile wheel hub of the present invention;

[0024] Figure 8 A lightweight automobile wheel hub according to the present invention Figure 2 Middle AA section view;

[0025] Fig. 9 The diagram is a schematic diagram of the structure of a third turntable of a lightweight automobile wheel hub according to the present invention.

[0026] In the figure: rotating main shaft 1, first turntable 2, connecting shaft 3, airbag 4, second turntable 5, through hole 6, protective shell 7, rubber tire 8, ventilation groove 9, fixing ring 10, third turntable 11, first annular slide groove 12, circular groove 13, limiting plate 14, annular block 15, limiting stop ring 16, second annular slide groove 17, air pipe 18, threaded groove 19. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0028] See also Figures 1 to 9The present invention provides a technical solution: a lightweight automobile wheel hub, comprising a rotating main shaft 1, a first turntable 2 is fixedly connected to the right end of the rotating main shaft 1, a plurality of connecting shafts 3 are evenly distributed on the first turntable 2, the connecting shaft 3 is fixedly connected to the first turntable 2, an outer wall of the connecting shaft 3 is wrapped with an airbag 4, a second turntable 5 is installed on the connecting shaft 3, a plurality of through holes 6 are opened on the second turntable 5, the connecting shaft 3 is slidably connected to the second turntable 5 through the through holes 6, the connecting shaft 3 is used to drive the second turntable 5 to rotate, a protective shell 7 is provided on the right side of the second turntable 5, the protective shell 7 is fixedly connected to the second turntable 5, the protective shell 7 forms a closed space inside the wheel hub to prevent external dust and impurities from affecting the operation of the internal mechanism, and the side walls of the second turntable 5 and the protective shell 7 are wrapped with a rubber tire 8.

[0029] Specifically, a ventilation groove 9 is provided inside the rotating main shaft 1, and the ventilation groove 9 is connected to the airbag 4. The user can inflate and deflate the airbag 4 through the ventilation groove 9 according to needs. When the airbag 4 is inflated, it can drive the rotating main shaft 1 to be lifted, thereby increasing the chassis height of the vehicle to prevent high obstacles from scratching or stabbing the chassis. At the same time, when the tire starts and stops or passes through an uneven road section, the inflated airbag 4 causes the connecting shaft 3 to drive the second turntable 5 to rotate, changing from rigid contact to flexible contact, thereby playing a role in buffering and vibration reduction.

[0030] Specifically, a third turntable 11 is provided in the gap between the first turntable 2 and the second turntable 5, the third turntable 11 is fixedly connected to the second turntable 5, a first annular groove 12 is provided on the third turntable 11, a plurality of balls are provided in the first annular groove 12, the third turntable 11 is in rolling contact with the first turntable 2 through the balls, and by providing the third turntable 11 in the gap, the sliding friction between the second turntable 5 and the center of the first turntable 2 is converted into rolling friction, thereby reducing the friction force, and making the transmission between the second turntable 5 and the first turntable 2 smoother and more labor-saving.

[0031] Specifically, a plurality of circular grooves 13 are provided on the inner wall of the protective shell 7 close to the second turntable 5, and an annular stopper 15 is provided in the circular groove 13. The circular grooves 13 correspond to the connecting shafts 3 one by one, and the circular grooves 13 have the same diameter as the through hole 6. The circular grooves 13 provided on the inner wall of the protective shell 7 allow the portion of the connecting shaft 3 that exceeds the second turntable 5 to rotate in the circular grooves 13, thereby limiting the horizontal displacement of the connecting shaft 3 and reducing the shaking amplitude of the rubber tire 8 when rolling.

[0032] Specifically, a plurality of limit plates 14 are fixedly connected to the right side wall of the connecting shaft 3, and a limit stop ring 16 is fixedly connected to the side wall of the limit plate 14. A second annular groove 17 is provided on the end face where the limit stop ring 16 contacts the inner wall of the protective shell 7. A plurality of balls are arranged in the second annular groove 17. The balls are in rolling contact with the inner wall of the protective shell 7. Through the balls on the limit stop ring 16, the connecting shaft 3 is in rolling contact when it slides and rotates in the circular groove 13 of the protective shell 7, thereby reducing friction and extending the service life of the wheel hub.

[0033] Specifically, the limit plate 14 rolls in the circular groove 13 of the protective shell 7 through the ball on the limit stop ring 16. There is a gap between the limit stop ring 16 and the edge of the circular groove 13. The limit stop ring 16 slides in the area restricted by the annular stop block 15 and the circular groove 13. When the airbag 4 is inflated, the connection height between the connecting shaft 3 and the second turntable 5 and the protective shell 7 changes. The limit stop ring 16 at the end of the connecting shaft 3 cooperates with the annular stop block 15 in the protective shell 7 to limit the floating range of the connecting shaft 3 in the vertical direction, so that the connection between the connecting shaft 3 and the second turntable 5 and the protective shell 7 will not derail, thereby improving the stability of the hub structure.

[0034] Specifically, an opening is provided on one side of the airbag 4 close to the connecting shaft 3, and an air pipe 18 is fixedly connected to the opening. The air pipe 18 is fixedly connected to the ventilation groove 9. The air pipe 18 is used to make the flow rate of the high-pressure gas entering the airbag 4 from the ventilation groove 9 more uniform, so that the air intake of the airbag 4 is smoother.

[0035] Specifically, the outside of the airbag 4 is wrapped with nitrile rubber. When the acrylonitrile content of the nitrile rubber is 39%, the air tightness is equivalent to that of IIR rubber, and the air tightness is better. A hydrogenated nitrile rubber is preferably used here. Hydrogenated nitrile rubber has better elasticity and wear resistance, and prolongs the service life of the wheel hub.

[0036] Specifically, the protective shell 7 is a split structure, a threaded groove 19 is provided in the middle of the protective shell 7, and the separate parts of the protective shell 7 are fixedly connected by bolts. Since the circular groove 13 provided on the protective shell 7 has a concave-convex closed structure, the protective shell 7 with a split structure is easier and more convenient to install and disassemble, and is convenient for users to perform maintenance and replacement.

[0037] Specifically, the bottom edges of the second turntable 5 and the protective shell 7 that are close to each other are fixedly connected with a fixing ring 10, and a plurality of bolts are installed on the fixing ring 10. The second turntable 5 and the protective shell 7 are tightly fitted and fixed by bolt connection, making the wheel hub as a whole more stable and durable.

[0038] When in use, the starting motor drives the rotating main shaft 1 to rotate, and the rotating main shaft 1 drives the connecting shaft 3 and the first turntable 2 to rotate. When the connecting shaft 3 rotates, it drives the second turntable 5 to rotate, so that the vehicle moves forward. When the vehicle encounters an uneven road section that may cause damage to the chassis, air is inflated into the airbag 4 through the ventilation groove 9. When the airbag 4 swells, it can drive the rotating main shaft 1 to be lifted, thereby increasing the chassis height of the vehicle to prevent higher obstacles from scratching or stabbing the chassis. At the same time, the inflated airbag 4 changes the rigid contact to flexible contact when the connecting shaft 3 drives the second turntable 5 to rotate when the tire starts and stops or passes through an uneven road section, thereby playing a role in buffering and vibration reduction.

[0039] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lightweight automobile wheel hub, comprising a rotating spindle (1), characterized in that: The right end of the rotating main shaft (1) is fixedly connected to a first rotating disk (2), a plurality of connecting shafts (3) are evenly distributed on the first rotating disk (2), the connecting shaft (3) is fixedly connected to the first rotating disk (2), the outer wall of the connecting shaft (3) is wrapped with an air bag (4), a second rotating disk (5) is installed on the connecting shaft (3), a plurality of through holes (6) are opened on the second rotating disk (5), the connecting shaft (3) is slidably connected to the second rotating disk (5) through the through holes (6), a protective shell (7) is provided on the right side of the second rotating disk (5), the protective shell (7) is fixedly connected to the second rotating disk (5), and the side walls of the second rotating disk (5) and the protective shell (7) are wrapped with a rubber tire (8); A ventilation groove (9) is provided inside the rotating main shaft (1), and the ventilation groove (9) is communicated with the air bag (4); A third rotating disk (11) is arranged in the gap between the first rotating disk (2) and the second rotating disk (5), the third rotating disk (11) is fixedly connected to the second rotating disk (5), a first annular sliding groove (12) is provided on the third rotating disk (11), a plurality of balls are arranged in the first annular sliding groove (12), and the third rotating disk (11) is in rolling contact with the first rotating disk (2) through the balls; A plurality of circular grooves (13) are formed on the inner wall of the protective shell (7) on the side close to the second rotating disk (5), and an annular stopper (15) is provided in the circular groove (13). The circular grooves (13) correspond to the connecting shafts (3) one by one, and the circular grooves (13) have the same diameter as the through hole (6); The right end of the connecting shaft (3) is fixedly connected to a limit plate (14), the side wall of the limit plate (14) is fixedly connected to a limit stop ring (16), the end surface of the limit stop ring (16) in contact with the inner wall of the protective shell (7) is provided with a second annular groove (17), a plurality of balls are arranged in the second annular groove (17), and the balls are in rolling contact with the inner wall of the protective shell (7); The limit plate (14) rolls in the circular groove (13) of the protective shell (7) via the ball bearings on the limit stop ring (16); there is a gap between the limit stop ring (16) and the edge of the circular groove (13); the limit stop ring (16) slides in the area restricted by the annular stopper (15) and the circular groove (13); The air bag (4) is provided with an opening on one side close to the connecting shaft (3), and an air pipe (18) is fixedly connected to the opening, and the air pipe (18) is fixedly connected to the ventilation groove (9).

2. A lightweight automobile wheel hub according to claim 1, characterized in that: The outer side of the airbag (4) is wrapped with hydrogenated nitrile rubber.

3. The lightweight automobile wheel hub according to claim 1, characterized in that: The protective shell (7) is a split structure, a thread groove (19) is provided in the middle of the protective shell (7), and the split parts of the protective shell (7) are fixedly connected by bolts.

4. The lightweight automobile wheel hub according to claim 1, characterized in that: A fixing ring (10) is fixedly connected to the bottom edge of the second rotating disk (5) and the protective shell (7) on one side close to each other, and a plurality of bolts are installed on the fixing ring (10).

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