Inner ball cage dust cover capable of preventing tripod from falling off

Abstract

The utility model discloses an inner ball cage dust cover for preventing a tripod from falling off, and relates to the related technical field of inner ball cage dust covers, the inner ball cage dust cover comprises an outer side coupling component and a dust cover, a tripod mechanism is arranged in the outer side coupling component, the dust cover is clamped outside the outer side coupling component, and the tripod mechanism is arranged in the outer side coupling component. And anti-falling plates are fixedly connected to the inner wall of the dust cover at equal intervals and are used for limiting the movement of the tripod mechanism. The arrangement mode that the dustproof cover and the anti-disengaging plate are matched is utilized, the anti-disengaging plate for limiting sliding of the tripod mechanism is arranged in the dustproof cover, and therefore the tripod mechanism in the outer side coupler component is further limited, excessive displacement of the tripod mechanism in the axial direction or the radial direction can be prevented, and the service life of the tripod mechanism is prolonged. And the stable relative position relation between the tripod mechanism and the outer side coupling component is guaranteed, the structure is simple, the cost is low, and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of inner ball cage dust cover, especially to an inner ball cage dust cover preventing three ball pin from falling off. BACKGROUND

[0002] The inner ball cage dust cover is a cylindrical part made of rubber or plastic, one end of which is connected to a transmission shaft and the other end is connected to a bottom disc related part. It is flexible in structure, wear-resistant and sealed in material, and can prevent dust and dirt from entering the inner ball cage, prevent water and moisture, and avoid the influence of water on the lubrication inside the inner ball cage to protect the normal operation of its parts.

[0003] The existing inner ball cage dust cover does not have a special constraint design for three ball pin displacement. When the inner ball cage is running, the three ball pin may be displaced due to various forces acting on it. The three ball pin is prone to excessive displacement in the axial or radial direction. Once the displacement exceeds the normal range, it will damage the normal cooperation relationship with the related parts, resulting in falling off. This not only makes the inner ball cage dust cover lose its normal transmission function, but also causes the equipment to stop for maintenance, which is relatively inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide an inner ball cage dust cover preventing three ball pin from falling off to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an inner ball cage dust cover preventing three ball pin from falling off, comprising an outer shaft coupling member and a dust cover, the inner part of the outer shaft coupling member is provided with a three ball pin mechanism, the dust cover is clamped on the outside of the outer shaft coupling member, and the inner wall of the dust cover is fixedly connected with a anti-falling plate at equal intervals, the anti-falling plate is used for limiting the movement of the three ball pin mechanism.

[0006] Preferably, the three ball pin mechanism comprises:

[0007] A main shaft, one end of the main shaft is arranged in the inner part of the outer shaft coupling member, and the other end of the main shaft is slidably connected with the inner cavity of the dust cover;

[0008] A three ball pin member, the three ball pin member is arranged in the inner part of the outer shaft coupling member, and the three ball pin member is arranged on the outside of the main shaft;

[0009] A roller unit, the roller unit is arranged on the outside of the three ball pin member.

[0010] Preferably, the outer shaft coupling member is cup-shaped with one end open, the inner wall of the outer shaft coupling member is provided with a plurality of raceway grooves at equal intervals, and the roller unit and the inner cavity of the raceway groove are matched with each other.

[0011] Preferably, the tripod mechanism further comprises:

[0012] The fixing cover is fixedly sleeved on the outside of the tripod component, and the fixing cover is used to limit the movement of the roller unit.

[0013] Preferably, the inner wall of the dust cover is provided with grooves corresponding to the rolling grooves at equal intervals, and the anti-slip plates are fixedly connected to the inner wall of the grooves at equal intervals.

[0014] Preferably, the outer wall of the dust cover is provided with peaks and valleys at equal intervals, and the peaks and valleys are arranged in a staggered manner.

[0015] The technical effects and advantages of this utility model are:

[0016] The utility model utilizes the arrangement mode that the dust cover and the anti-slip plate cooperate with each other, and the anti-slip plate is arranged inside the dust cover to limit the sliding of the tripod mechanism, thereby further limiting the position of the tripod mechanism inside the outer coupling member, which can prevent the tripod mechanism from excessive displacement in the axial or radial direction, ensure that the relative position relationship between the tripod mechanism and the outer coupling member is stable, and has a simple structure, low cost, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall front internal structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the side structure of the dust cover of the utility model.

[0019] Figure 3 For this utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 1. Outer coupling component; 2. Tripod mechanism; 21. Main shaft; 22. Tripod component; 23. Roller unit; 24. Fixed cover; 31. Dust cover; 32. Anti-slip plate; 4. Peak; 5. Valley. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-3The dust cover of an inner ball cage shown in the figure is used to prevent the tripod from falling off, including an outer coupling component 1 and a dust cover 31. A tripod mechanism 2 is provided inside the outer coupling component 1, and the dust cover 31 is clamped to the outside of the outer coupling component 1. Anti-slip plates 32 are equidistantly fixedly connected to the inner wall of the dust cover 31. The anti-slip plates 32 are used to limit the movement of the tripod mechanism 2. The structural characteristics of the dust cover 31, while adapting to the main shaft 21, may not only play a certain role in dust prevention, but also in buffering and auxiliary positioning. When the inner ball cage is running, due to the transmission of power, the tripod mechanism 2 may be affected by various forces and displaced. The anti-slip plates 32 can prevent the tripod mechanism 2 from excessive displacement in the axial or radial direction, thereby ensuring that the relative position relationship between the tripod mechanism 2 and the outer coupling component 1 is stable.

[0023] Specifically, the tripod mechanism 2 includes a main shaft 21, a tripod member 22, a roller unit 23 and a fixed cover 24. One end of the main shaft 21 is arranged inside the outer coupling member 1, and the other end of the main shaft 21 is slidably connected with the inner cavity of the dust cover 31. The main shaft 21 is a key component in the tripod mechanism 2. It connects the outer coupling member 1 and the dust cover 31, providing a basic path for power transmission. One end is arranged inside the outer coupling member 1, so that the tripod mechanism 2 can work in conjunction with other parts of the coupling to Power is transmitted from one component to another, which is slidably connected with the inner cavity of the dust cover 31. While ensuring relative movement, it provides a guide for the dust cover 31 so that the dust cover 31 can slide stably along the main shaft 21. In addition, it also plays a certain supporting role for the dust cover 31 to ensure the position stability of the dust cover 31 during operation. The tripod component 22 is located inside the outer coupling component 1 and is sleeved on the outside of the main shaft 21. The tripod component 22 serves to connect the main shaft 21 and the roller unit 23. The tripod member 22 acts as a bridge, which can adapt to the angular changes of the inner ball cage during operation and is an important component for achieving flexible transmission of the inner ball cage. During the power transmission process, the tripod member 22 can disperse the force transmitted from the main shaft 21 to the roller unit 23. By cooperating with the roller unit 23, the force can be more evenly transmitted to the entire mechanism, reducing local stress concentration and ensuring stable operation of the mechanism. The roller unit 23 is sleeved on the outside of the tripod member 22. The main function of the roller unit 23 is to reduce the friction between the tripod member 22 and other components. During the movement of the tripod mechanism 2, the roller unit 23 can convert sliding friction into rolling friction, greatly reducing friction, thereby reducing energy loss and improving the transmission efficiency of the mechanism. The fixed cover 24 is fixedly sleeved on the outside of the tripod member 22. The fixed cover 24 is used to limit the movement of the roller unit 23. The limiting function of the fixed cover 24 can prevent the roller unit 23 from axial or radial displacement during operation, ensuring the relative position relationship between the roller unit 23 and the tripod member 22, thereby ensuring the normal operation of the entire tripod mechanism 2.

[0024] Furthermore, the outer coupling member 1 is in the shape of a cup with one end open. A plurality of rolling grooves are formed on the inner wall of the outer coupling member 1 at equal intervals, and the roller units 23 cooperate with the inner cavities of the rolling grooves.

[0025] Furthermore, grooves corresponding to the rolling grooves are equidistantly opened on the inner wall of the dust cover 31, and anti-slip plates 32 are fixedly connected to the inner wall of the grooves at equidistant intervals. At least two anti-slip plates 32 are arranged inside each groove, so that the tripod mechanism 2 can be effectively limited.

[0026] Furthermore, the outer wall of the dust cover 31 is equidistantly provided with peaks 4 and valleys 5, and the peaks 4 and valleys 5 are staggered. The diameters of the peaks 4 and valleys 5 decrease one by one from one side close to the outer coupling member 1 to the other side, so that it can adapt to the main shaft 21 while playing a dust-proof role for the main shaft 21, and at the same time can absorb the vibration transmitted from the main shaft 21 to a certain extent. When there is vibration in the system, this special structure between the dust cover 31 and the main shaft 21 will produce elastic deformation, thereby buffering the transmission of vibration energy. The structure of the peaks 4 and valleys 5 helps to assist in positioning the main shaft 21 during installation. Because of its special diameter change law, there is a gradual adaptation relationship between the main shaft 21 and the dust cover 31. During the assembly process, the operator can more accurately determine whether the main shaft 21 is installed in place based on the matching of the peaks 4 and valleys 5 with the main shaft 21, thereby improving the accuracy and efficiency of the installation.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An inner ball cage dust cover for preventing tripod pins from falling off, comprising an outer coupling member (1) and a dust cover (31), characterized in that: A tripod mechanism (2) is provided inside the outer coupling component (1), the dust cover (31) is clamped to the outside of the outer coupling component (1), and anti-slip plates (32) are fixedly connected to the inner wall of the dust cover (31) at equal intervals, and the anti-slip plates (32) are used to limit the movement of the tripod mechanism (2).

2. The dust cover for an inner ball cage that prevents tripod pins from falling off according to claim 1, characterized in that: The tripod mechanism (2) comprises: A main shaft (21), one end of the main shaft (21) is disposed inside the outer coupling member (1), and the other end of the main shaft (21) is slidably connected to the inner cavity of the dust cover (31); A tripod component (22), the tripod component (22) being located inside the outer coupling component (1), and the tripod component (22) being sleeved on the outside of the main shaft (21); A roller unit (23) is sleeved on the outside of the tripod component (22).

3. The dust cover of the inner ball cage for preventing the tripod pin from falling off according to claim 2, characterized in that: The outer coupling member (1) is cup-shaped with one end open, and a plurality of rolling grooves are equidistantly provided on the inner wall of the outer coupling member (1), and the roller unit (23) cooperates with the inner cavity of the rolling groove.

4. The dust cover for an inner ball cage that prevents tripod pins from falling off according to claim 2, characterized in that: The tripod mechanism (2) further comprises: A fixed cover (24) is fixedly sleeved on the outside of the tripod component (22), and the fixed cover (24) is used to limit the movement of the roller unit (23).

5. The dust cover for inner ball cage that prevents tripod pin from falling off according to claim 1, characterized in that: Grooves corresponding to the rolling grooves are formed at equal intervals on the inner wall of the dust cover (31), and the anti-slip plates (32) are fixedly connected to the inner wall of the grooves at equal intervals.

6. The dust cover for an inner ball cage that prevents tripod pins from falling off according to claim 1, characterized in that: The outer wall of the dust cover (31) is provided with peaks (4) and valleys (5) at equal intervals, and the peaks (4) and valleys (5) are arranged in a staggered manner.

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