A constant velocity joint for a vehicle capable of eliminating abnormal noise during cornering

Abstract

The utility model relates to the technical field of automobile parts, concretely relates to a car constant velocity joint that can eliminate turning abnormal sound, including outer ring and inner ring, the inside of outer ring is opened with universal cavity, the inside of universal cavity is movably installed with inner ring, and the outside of inner ring is respectively opened with multiple groups of outer channel and inner channel at equal intervals, the outside of inner ring is sleeved with retainer, the inside of retainer is opened with multiple groups of window, the inside of multiple groups of window is provided with steel ball, and steel ball is located between outer channel and inner channel, the both sides of window are opened with expansion groove, and the inside of expansion groove is provided with shock absorber. When the car turns, the angle of universal joint changes, the expansion groove is opened on the both sides of the multiple windows of retainer to optimize, and the movement of steel ball is further limited, the both sides of steel ball cannot contact the side wall of retainer, thereby eliminating abnormal sound, the contact area of steel ball and inner and outer raceway is lubricated by shock absorber, and further prevents abnormal sound caused by abrasion, lubrication deficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a constant velocity joint for automobiles that can eliminate abnormal noises when turning. Background Technology

[0002] The constant velocity joint is a key component in the automotive transmission system, mainly used in front-wheel drive and four-wheel drive vehicles. It ensures that power can be smoothly transmitted when the wheels are turning, avoiding speed fluctuations and vibrations. However, when the vehicle is turning, abnormal noises may occur at the outer end of the constant velocity joint. These noises are transmitted from the driver's cabin to the passenger compartment, affecting the comfort of the driver and passengers.

[0003] In the prior art, such as the patent with publication number CN119878717A, a constant velocity universal joint with synchronous rotation of steel balls and a ball cage, a transmission system and an electric vehicle are disclosed. It includes an outer star wheel, a middle ball cage and an inner star wheel. The inner spherical surface of the outer star wheel is equally divided with a number of inner ball tracks, and the outer spherical surface of the inner star wheel is equally divided with a number of outer ball tracks. The inner and outer ball tracks correspond one-to-one to form a number of ball tracks. The ball cage is equally divided with a number of windows, each window contains a steel ball, and each steel ball is in contact with a ball track. One or a pair of symmetrically arranged ball tracks are concentric ball tracks.

[0004] The above structure can eliminate abnormal noise and improve abnormal wear through constant velocity universal joint. However, when the vehicle is turning, the movement of the steel balls on both sides comes into contact with the side wall of the cage, resulting in abnormal noise from the outer end joint of the constant velocity universal joint. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a constant velocity joint for automobiles that can eliminate abnormal noise during turning, so as to solve the problem of abnormal noise from the outer end of the constant velocity joint when the steel balls on both sides come into contact with the side wall of the cage during the turning of the whole vehicle.

[0006] To achieve the above objectives, this utility model provides a constant velocity joint for automobiles that can eliminate abnormal noise during turns, comprising an outer ring and an inner ring. The outer ring has a universal cavity inside, and the inner ring is movably installed inside the universal cavity. Multiple sets of outer grooves and inner grooves are equidistantly formed inside the outer ring and outside the inner ring, respectively. A retainer is sleeved on the outside of the inner ring, and multiple sets of windows are formed inside the retainer. Steel balls are arranged inside the multiple sets of windows, and the steel balls are located between the outer grooves and the inner grooves. Expanded grooves are formed on both sides of each window, and shock-absorbing elements are arranged inside the expanded grooves.

[0007] Preferably, there are at least six sets of both the outer channel and the inner channel, and the outer channel and the inner channel are arranged in a corresponding manner.

[0008] Preferably, both the outer channel and the inner channel are arc-shaped, and the curvature of the outer channel matches the curvature of the inner channel.

[0009] Preferably, the shock-absorbing component includes shock-absorbing blocks fixedly installed on the inner walls of multiple sets of expansion grooves, and the interior of the shock-absorbing blocks is filled with grease; multiple sets of elastic blocks are distributed around the inner wall of the outer ring, and the elastic blocks correspond to the shock-absorbing blocks.

[0010] Preferably, the expansion groove is an arc-shaped structure, and the shock-absorbing block is an inclined surface.

[0011] Preferably, the elastic blocks are distributed between two adjacent sets of outer channels, and the number of windows is the same as the number of outer channels and inner channels.

[0012] Preferably, the connection between the expansion groove and the window is provided with an arc-shaped convex ball, and at least two sets of arc-shaped convex balls are provided.

[0013] The beneficial effects of this utility model are:

[0014] The cage has multiple windows, and the steel ball is fixed in the outer and inner raceways and within the cage windows. When the car turns, the universal joint angle changes. Due to the optimization of the multiple windows on both sides of the cage by opening expansion grooves, the movement of the steel ball is further restricted, so that the movement of the steel ball on both sides cannot contact the side wall of the cage, thereby eliminating abnormal noise. The shock absorber lubricates the contact area between the steel ball and the inner and outer raceways, further preventing abnormal noise caused by wear and insufficient lubrication. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0017] Figure 2 This is a schematic diagram of the overall semi-sectional structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the outer ring of this utility model;

[0019] Figure 4 This is an exploded structural diagram of the inner ring and cage of this utility model;

[0020] Figure 5 This is a front view structural diagram of the retainer of this utility model;

[0021] Figure 6 This is a front view structural diagram of the arc-shaped convex sphere of this utility model.

[0022] The markings in the diagram are: 1. Outer ring; 2. Inner ring; 3. Steel ball; 4. Cage; 5. Outer channel; 6. Window; 7. Inner channel; 8. Enlarged groove; 9. Universal cavity; 10. Groove; 11. Elastic block; 12. Shock absorber block; 13. Arc-shaped convex ball. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a constant velocity joint for automobiles that can eliminate abnormal noise during turns includes an outer ring 1 and an inner ring 2. The outer ring 1 has a universal cavity 9 inside, and the inner ring 2 is movably installed inside the universal cavity 9. Multiple sets of outer grooves 5 and inner grooves 7 are equidistantly formed inside the outer ring 1 and outside the inner ring 2, respectively. A retainer 4 is sleeved on the outside of the inner ring 2. Multiple sets of windows 6 are formed inside the retainer 4. Steel balls 3 are set inside the multiple sets of windows 6. The steel balls 3 are located between the outer grooves 5 and the inner grooves 7. Expansion grooves 8 are formed on both sides of the windows 6. Vibration-absorbing elements are set inside the expansion grooves 8.

[0025] In this embodiment, the corresponding retainer 4 has multiple sets of windows. The steel ball 3 is fixed in the outer groove 5, the inner groove 7, and the windows 6 of the retainer 4. When the car turns, the universal joint angle changes. Since the retainer has multiple windows 6 with expansion grooves 8 on both sides for optimization, the movement of the steel ball 3 is further restricted, so that the movement of the steel ball 3 on both sides cannot contact the side wall of the retainer 4, thereby eliminating abnormal noise. At the same time, the shock absorber lubricates the contact area between the steel ball 3 and the inner and outer raceways, further preventing abnormal noise caused by wear and insufficient lubrication.

[0026] As one implementation method, such as Figure 1 , Figure 2 and Figure 3 As shown, both the outer channel 5 and the inner channel 7 are provided with at least six sets, and the outer channel 5 and the inner channel 7 are provided in a corresponding manner.

[0027] In this embodiment, the corresponding retainer 4 has multiple sets of windows. The steel ball 3 is fixed in the outer groove 5, the inner groove 7 and the window 6 of the retainer 4. When the car turns, the universal joint angle changes. Due to the optimization of the multiple windows 6 of the retainer by opening the expansion grooves 8 on both sides, the steel ball 3 is prevented from contacting each other.

[0028] As one implementation method, such as Figure 1 , Figure 2 and Figure 3 As shown, both the outer channel 5 and the inner channel 7 are arc-shaped, and the curvature of the outer channel 5 matches the curvature of the inner channel 7.

[0029] In this embodiment, the curvature of the outer channel 5 is adapted to the curvature of the inner channel 7. When the steel ball 3 rolls in the outer channel 5 and the inner channel 7, the corresponding retainer 4 has multiple sets of windows. The steel ball 3 is fixed in the outer channel 5, the inner channel 7, and the windows 6 of the retainer 4, thereby improving the restraining effect of the steel ball 3.

[0030] As one implementation method, such as Figure 1 , Figure 2 and Figure 4 As shown, the shock-absorbing component includes shock-absorbing blocks 12 fixedly installed on the inner wall of multiple sets of expansion grooves 8, and the interior of the shock-absorbing blocks 12 is filled with grease; multiple sets of elastic blocks 11 are distributed around the inner wall of the outer ring 1, and the elastic blocks 11 correspond to the shock-absorbing blocks 12.

[0031] In this embodiment, when the universal joint angle reaches its maximum when the car is turning, the window 6 inside the retainer 4 is connected to the expansion groove 8. After the shock-absorbing block 12 in the expansion groove 8 contacts the elastic block 11 on the inner wall of the outer ring 1, the elastic block 11 squeezes the shock-absorbing block 12, causing the internal grease to flow into the inner channel 7. As the steel ball 3 rolls in the outer channel 5 and the inner channel 7, the lubrication contact area is increased, friction is reduced, and abnormal noise caused by wear and insufficient lubrication is prevented.

[0032] As one implementation method, such as Figure 1 , Figure 2 and Figure 4 As shown, the expansion groove 8 is set with an arc-shaped structure, and the shock-absorbing block 12 is set with an inclined surface.

[0033] In this embodiment, when the car turns, the angle of the universal joint changes. Because the cage has multiple windows 6 with expansion slots 8 on both sides for optimization, the arc-shaped expansion slots 8 can prevent the steel ball 3 from contacting the windows 6 inside the cage 4, restricting the movement of the steel ball 3, thereby eliminating abnormal noise.

[0034] As one implementation method, such as Figure 2 and Figure 3 As shown, the elastic blocks 11 are distributed between two adjacent sets of outer channels 5, and the number of windows 6 is the same as that of outer channels 5 and inner channels 7.

[0035] In this embodiment, the optimized cage 4 solution optimizes all the windows 6 to avoid all steel balls 3 from colliding with the side wall of the cage 4. At the same time, the elastic block 11 can contact the expansion groove 8 inside the window 6 to apply pressure to the shock-absorbing block 12 and enhance lubrication, which can effectively solve the problem of abnormal noise of the drive shaft under large angles of the whole vehicle.

[0036] As one implementation method, such as Figure 5As shown, an arc-shaped convex ball 13 is provided at the connection between the expansion groove 8 and the window 6, and at least two sets of arc-shaped convex balls 13 are provided.

[0037] In this embodiment, multiple sets of windows 6 are opened in the cage 4, and the steel ball 3 is fixed in the outer groove 5, inner groove 7, and windows 6 of the cage 4. Since arc-shaped convex balls 13 are provided at the connection between the expansion groove 8 and the window 6, the multiple sets of arc-shaped convex balls 13 restrict the movement of the steel ball 3. When the car turns, the universal joint angle changes, and the arc-shaped convex balls 13 in the window 6 restrict the movement of the steel ball 3, so that the movement of the steel ball 3 on both sides cannot contact the side wall of the cage 4, thereby eliminating abnormal noise.

[0038] Working principle: During use, the cage 4 has multiple windows 6. The steel ball 3 is fixed in the outer groove 5, inner groove 7, and windows 6 of the cage 4. When the car turns, the universal joint angle changes. Due to the optimization of the expansion grooves 8 on both sides of the multiple windows 6 of the cage, the movement of the steel ball 3 is further restricted, so that the movement of the steel ball 3 on both sides cannot contact the side wall of the cage 4, thereby eliminating abnormal noise. At the same time, when the universal joint angle reaches its maximum when the car turns, the inner window 6 of the cage 4 is connected to the expansion groove 8. After the shock-absorbing block 12 in the expansion groove 8 contacts the elastic block 11 on the inner wall of the outer ring 1, the elastic block 11 squeezes the shock-absorbing block 12, allowing the internal grease to flow into the inner groove 7. As the steel ball 3 rolls in the outer groove 5 and inner groove 7, the lubrication contact area is increased, friction is reduced, and abnormal noise caused by wear and insufficient lubrication is prevented.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0040] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A constant velocity joint for automobiles capable of eliminating abnormal noise during cornering, comprising an outer ring (1) and an inner ring (2), characterized in that, The outer ring (1) has a universal cavity (9) inside, and the inner ring (2) is movably installed inside the universal cavity (9). Multiple sets of outer channels (5) and inner channels (7) are equidistantly opened inside the outer ring (1) and outside the inner ring (2). The inner ring (2) is sleeved with a retainer (4), and the retainer (4) has multiple sets of windows (6) inside. The windows (6) are equipped with steel balls (3) inside. The steel balls (3) are located between the outer channel (5) and the inner channel (7). The windows (6) are provided with expansion grooves (8) on both sides, and the expansion grooves (8) are equipped with shock-absorbing components inside. The shock-absorbing component includes shock-absorbing blocks (12) fixedly installed on the inner wall of multiple sets of expansion grooves (8), the interior of the shock-absorbing blocks (12) is filled with grease, and multiple sets of elastic blocks (11) are distributed around the inner wall of the outer ring (1), the elastic blocks (11) corresponding to the shock-absorbing blocks (12); At the connection between the expansion groove (8) and the window (6), an arc-shaped convex ball (13) is provided, and at least two sets of arc-shaped convex balls (13) are provided.

2. The constant velocity joint for automobiles that can eliminate abnormal noise during turning, as described in claim 1, is characterized in that, The outer channel (5) and the inner channel (7) are each provided with at least six sets, and the outer channel (5) and the inner channel (7) are provided in a corresponding manner.

3. A constant velocity joint for automobiles that can eliminate abnormal noise during turning, as described in claim 1, is characterized in that... Both the outer channel (5) and the inner channel (7) are arc-shaped, and the curvature of the outer channel (5) matches the curvature of the inner channel (7).

4. A constant velocity joint for automobiles that can eliminate abnormal noise during turning, as described in claim 1, is characterized in that, The expansion groove (8) is an arc-shaped structure, and the shock-absorbing block (12) is an inclined surface.

5. A constant velocity joint for automobiles capable of eliminating turning noise according to claim 1, characterized in that, The elastic blocks (11) are distributed between two adjacent sets of outer channels (5), and the number of windows (6) is the same as that of the outer channels (5) and inner channels (7).

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