Double row ball wheel hub unit

Abstract

The utility model discloses a double -row ball wheel hub unit, including the outer ring, still including the sound absorption strip, and the sound absorption strip is connected on the outside of the outer ring through buckle mechanism, realizes the fixed connection between sound absorption strip and the outer ring. The utility model not only can improve the connecting strength and stability between sound absorption strip and the outer ring, can reduce tire noise, avoid falling when high -speed running, prolong the service life of wheel hub unit.

Description

Technical Field

[0001] This utility model relates to a double-row ball hub unit. Background Technology

[0002] The wheel hub is one of the components of a car tire. It is installed inside the tire to support it. The wheel hub is connected to the car through a flange, so that the wheel hub and the car tire can rotate coaxially. A wheel hub with steel balls installed on both sides is called a double-row ball wheel hub.

[0003] Due to structural design flaws, existing wheel hub units are prone to causing excessive tire noise, which affects driving comfort. Utility Model Content

[0004] The purpose of this utility model is to provide a technical solution for a double-row ball hub unit that addresses the shortcomings of existing technologies. This solution can not only improve the connection strength and stability between the sound-absorbing strip and the outer ring, but also reduce tire noise, prevent the strip from falling off at high speeds, and extend the service life of the hub unit.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A double-row ball hub unit, including

[0007] Outer ring;

[0008] Its features are:

[0009] It also includes sound-absorbing strips, which are connected to the outer surface of the outer ring through a snap-fit ​​mechanism to achieve a fixed connection between the sound-absorbing strips and the outer ring. Through the design of the above structure, not only can the connection strength and stability between the sound-absorbing strips and the outer ring be improved, but tire noise can also be reduced, preventing them from falling off at high speeds and extending the service life of the wheel hub unit.

[0010] Furthermore, the snap-fit ​​mechanism includes a limiting block and a telescopic component. The limiting block is evenly distributed on the inner side of the sound-absorbing strip, and the outer circumferential side of the outer ring is provided with a groove. The limiting block matches the groove, and the telescopic component is connected to the outer ring. By limiting the limiting block with the telescopic component, the fixed connection between the sound-absorbing strip and the outer ring is achieved. By snapping the limiting block into the groove and then connecting it with the telescopic component, the connection stability and reliability between the sound-absorbing strip and the outer ring can be greatly improved, and detachment can be avoided.

[0011] Furthermore, the telescopic component includes a telescopic block and a spring. The outer ring has symmetrically arranged first recessed holes on the inner side of the groove. The telescopic block is connected to the first recessed hole through the spring. The limiting block has a second recessed hole. The spring pushes the telescopic block into the second recessed hole along the first recessed hole, realizing the fixed connection between the limiting block and the outer ring. When the limiting block is pushed in along the groove, the telescopic block is pushed into the first recessed hole by the limiting block. When the limiting block is completely in contact with the groove, the telescopic block extends into the second recessed hole under the action of the spring, so that the telescopic block connects the first recessed hole and the second recessed hole at the same time. The length of the telescopic block is greater than the length of the second recessed hole.

[0012] Furthermore, structural adhesive is applied between the sound-absorbing strip and the outer ring to improve the connection stability between the sound-absorbing strip and the outer ring.

[0013] Furthermore, it also includes an inner ring, steel balls, and a shaft. The inner ring is connected to the outside of the shaft, and the inner ring is held against the inside of the outer ring by the steel balls. The steel balls are connected to each other by a cage.

[0014] Furthermore, an end cap is provided between the inner and outer rings.

[0015] Furthermore, a slot is provided on the side of the outer ring near the end cap, and an O-ring is embedded in the slot.

[0016] Furthermore, a first sealing ring is provided between the inner ring and the outer ring, and the first sealing ring is located on both sides of the cage. A pressure cap is provided on the outside of the shaft, and a second sealing ring and a third sealing ring are provided between the pressure cap and the outer ring. This can seal the gap between the outer ring and the inner ring, reduce dust entry, reduce wear, and extend the service life of the steel ball.

[0017] Furthermore, the first sealing ring, the second sealing ring, and the third sealing ring all include a rubber layer and a metal skeleton, with the metal skeleton embedded in the rubber layer.

[0018] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0019] This invention not only improves the connection strength and stability between the sound-absorbing strip and the outer ring, but also reduces tire noise, prevents it from falling off at high speeds, and extends the service life of the wheel hub unit. Attached image description:

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a double-row ball hub unit according to the present invention;

[0022] Figure 2 for Figure 1 The left view;

[0023] Figure 3 for Figure 1A magnified view of a section at point I;

[0024] Figure 4 for Figure 1 A magnified view of a section at point II.

[0025] In the diagram: 1-O-ring; 2-End cap; 3-Outer ring; 4-Steel ball; 5-Cage; 6-Inner ring; 7-First sealing ring; 71-Rubber layer; 72-Metal skeleton; 8-Second sealing ring; 9-Third sealing ring; 10-Pressure cap; 11-Shaft; 12-Slot; 13-Sound absorbing strip; 14-Groove; 15-First recess; 16-Telescopic block; 17-Spring; 18-Limiting block; 19-Second recess. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0029] like Figures 1 to 4 As shown, this utility model provides a double-row ball hub unit, which includes an outer ring 3, an inner ring 6, steel balls 4, and a shaft 11. The inner ring 6 is connected to the outside of the shaft 11, and the inner ring 6 is held against the inside of the outer ring 3 by the steel balls 4. The steel balls 4 are connected to each other by a retainer 5.

[0030] An end cap 2 is provided between the inner ring 6 and the outer ring 3.

[0031] The outer ring 3 has a slot 12 on the side near the end cap 2, and an O-ring 1 is embedded in the slot 12.

[0032] A first sealing ring 7 is provided between the inner ring 6 and the outer ring 3. The first sealing ring 7 is located on both sides of the retainer 5. A pressure cap 10 is provided on the outer side of the shaft 11. A second sealing ring 8 and a third sealing ring 9 are provided between the pressure cap 10 and the outer ring 3. These can seal the gap between the outer ring 3 and the inner ring 6, reduce dust entry, reduce wear, and extend the service life of the steel ball 4.

[0033] The first sealing ring 7, the second sealing ring 8, and the third sealing ring 9 each include a rubber layer 71 and a metal skeleton 72, with the metal skeleton 72 embedded in the rubber layer 71.

[0034] The hub unit also includes a sound-absorbing strip 13, which is connected to the outer surface of the outer ring 3 by a snap-fit ​​mechanism to achieve a fixed connection between the sound-absorbing strip 13 and the outer ring 3.

[0035] The snap-fit ​​mechanism includes a limiting block 18 and a telescopic component. The limiting block 18 is evenly distributed on the inner side of the sound-absorbing strip 13. The outer circumferential side of the outer ring 3 is provided with a groove 14. The limiting block 18 matches the groove 14. The telescopic component is connected to the outer ring 3. By limiting the limiting block 18 through the telescopic component, the fixed connection between the sound-absorbing strip 13 and the outer ring 3 can be achieved. By snapping the limiting block 18 into the groove 14 and then connecting it through the telescopic component, the connection stability and reliability between the sound-absorbing strip 13 and the outer ring 3 can be greatly improved, and detachment can be avoided.

[0036] The telescopic assembly includes a telescopic block 16 and a spring 17. The outer ring 3 has a first recessed hole 15 symmetrically arranged inside the groove 14. The telescopic block 16 is connected to the first recessed hole 15 through the spring 17. The limiting block 18 has a second recessed hole 19. The spring 17 pushes the telescopic block 16 into the second recessed hole 19 along the first recessed hole 15, realizing the fixed connection between the limiting block 18 and the outer ring 3. When the limiting block 18 is pushed in along the groove 14, the telescopic block 16 is pushed into the first recessed hole 15 by the limiting block 18. When the limiting block 18 is completely in contact with the groove 14, the telescopic block 16 extends into the second recessed hole 19 under the action of the spring 17, so that the telescopic block 16 connects the first recessed hole 15 and the second recessed hole 19 at the same time. The length of the telescopic block 16 is greater than the length of the second recessed hole 19.

[0037] Structural adhesive is applied between the sound-absorbing strip 13 and the outer ring 3 to improve the connection stability between the sound-absorbing strip and the outer ring 3.

[0038] The above-mentioned structural design not only improves the connection strength and stability between the sound-absorbing strip 13 and the outer ring 3, but also reduces tire noise, prevents it from falling off at high speeds, and extends the service life of the wheel hub unit.

[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A double-row ball hub unit, comprising Outer ring; Its features are: It also includes a sound-absorbing strip, which is connected to the outer surface of the outer ring via a snap-fit ​​mechanism to achieve a fixed connection between the sound-absorbing strip and the outer ring. The snap-fit ​​mechanism includes a limiting block and a telescopic component. The limiting block is evenly distributed on the inner side of the sound-absorbing strip, and the outer circumferential side of the outer ring is provided with a groove. The limiting block matches the groove. The telescopic component is connected to the outer ring and is limited by the limiting block to achieve a fixed connection between the sound-absorbing strip and the outer ring.

2. The double-row ball hub unit according to claim 1, characterized in that: The telescopic assembly includes a telescopic block and a spring. The outer ring has a first recessed hole symmetrically arranged inside the groove. The telescopic block is connected to the first recessed hole through the spring. The limiting block has a second recessed hole. The spring pushes the telescopic block along the first recessed hole into the second recessed hole, thereby realizing a fixed connection between the limiting block and the outer ring.

3. The double-row ball hub unit according to claim 1, characterized in that: Structural adhesive is applied between the sound-absorbing strip and the outer ring.

4. A double-row ball hub unit according to any one of claims 1 to 3, characterized in that: It also includes an inner ring, steel balls, and a shaft. The inner ring is connected to the outside of the shaft, and the inner ring abuts against the inside of the outer ring through the steel balls. The steel balls are connected to each other by a cage.

5. A double-row ball hub unit according to claim 4, characterized in that: An end cap is provided between the inner ring and the outer ring.

6. A double-row ball hub unit according to claim 5, characterized in that: The outer ring has a slot on the side near the end cap, and an O-ring is embedded in the slot.

7. A double-row ball hub unit according to claim 4, characterized in that: A first sealing ring is provided between the inner ring and the outer ring, and the first sealing ring is located on both sides of the cage. A pressure cap is provided on the outside of the shaft, and a second sealing ring and a third sealing ring are provided between the pressure cap and the outer ring.

8. A double-row ball hub unit according to claim 7, characterized in that: The first sealing ring, the second sealing ring, and the third sealing ring all include a rubber layer and a metal skeleton, with the metal skeleton embedded in the rubber layer.

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