Rear axle mandrel

Abstract

The utility model belongs to the technical field of mandrels, and particularly relates to a rear axle mandrel which comprises a mandrel body, a bearing connecting end is arranged at one end of the mandrel body, a rear axle connecting end is arranged at the other end of the mandrel body, a fixing disc is fixedly connected to the center of the outer wall of the mandrel body, and a fender is slidably connected to the outer wall of the fixing disc. The fender can be independently replaced, waste caused by overall replacement of the rear axle mandrel is reduced, the limiting sleeve is connected to the mandrel body through the detachable assembly, mounting and dismounting are easy and convenient, the fender is limited through the limiting sleeve, and the fender is prevented from falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of core shafts, in particular to a rear axle core shaft. Background Art

[0002] The rear axle is the rear driveshaft component of a vehicle's power transmission. It consists of two half-axles, each capable of differential motion. It also supports the wheels and connects them to the rear wheels. In front-axle-driven vehicles, the rear axle is merely a tag axle, solely carrying the load. If the front axle isn't the driving axle, the rear axle becomes the driving axle. In this case, in addition to carrying the load, it also provides drive, deceleration, and differential functions. Four-wheel drive vehicles typically have a transfer case located in front of the rear axle.

[0003] Existing rear axle core shafts, such as the stable and portable rear axle core shaft with Chinese patent application number CN202220365908.2, preferably adopt one-piece molding between the fender and the body. The fender is prone to wear after long-term work. When it is replaced, the entire rear axle core shaft is often replaced directly, which causes serious waste and increases the cost of replacing the fender. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned technical problems and provide a rear axle core shaft, which can realize the replacement of mudguards separately and save resources.

[0005] In view of this, the utility model provides a rear axle core shaft, including a core shaft body, a bearing connection end is provided at one end of the core shaft body, and a rear axle connection end is provided at the other end. A fixed plate is fixedly connected to the center of the outer wall of the core shaft body, and a mudguard is slidably connected to the outer wall of the fixed plate. The limit sleeve is abutted against the side of the mudguard away from the rear axle connection end. A detachable component is provided between the limit sleeve and the core shaft body, and the limit sleeve is connected to the core shaft body through the detachable component.

[0006] In the above technical solution, further, the detachable component includes a control inner hole, control inner holes are opened on both sides of the outer wall of the limit sleeve, the two ends of the movable rod are fixedly connected to the two ends of the control inner hole, the outer wall of the movable rod is movably connected with a control button, a movable inner hole is opened on one side of the inner wall of the control inner hole, a fixed plug is connected to the inner side of the control button, the outer wall of the fixed plug is movably connected to the inner wall of the movable inner hole, and an anti-drop hole is opened on the outer wall of the core shaft body.

[0007] In the above technical solution, further, the detachable component also includes a damper, one side of the inner wall of the control inner hole is fixedly connected to one end of the damper, the outer wall of the damper is provided with an elastic part, and the other end of the damper is fixedly connected to the rear end outer surface of one side of the control button.

[0008] In the above technical solution, further, it also includes a mounting groove, which is opened at both ends of the fixed plate and the fender, and the fixing ring is set in the mounting groove, and the fixing ring is fixedly connected to the fixed plate through a fastening assembly.

[0009] In the above technical solution, further, the fastening assembly includes a fastening screw, which is threadedly connected to the fixing ring and the side wall of the fixing disk. A spring washer is sleeved on the outer periphery of the fastening screw, and a fixing cap is provided on one side of the fastening bolt.

[0010] In the above technical solution, further, a fastening groove is provided on a side of the fixing cap away from the fixing plate, and the cross section of the fastening groove is hexagonal.

[0011] In the above technical solution, further, a fastening hole is provided at the contact portion between the fixing ring and the fastening bolt, and a plurality of fastening bolts are evenly arranged around the core shaft body.

[0012] In the above technical solution, further, a first cavity is opened on the side of the rear axle connection end away from the bearing connection end, a second cavity is opened on the side of the first cavity close to the bearing connection end, and an annular buffer pad is installed in the second cavity.

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

[0014] 1. The outer wall of the fixed plate is slidably connected with a fender. When the fender is worn, it can be replaced separately, reducing the waste caused by replacing the entire rear axle core shaft.

[0015] 2. The limit sleeve is connected to the core shaft body through a detachable component, which is easy to install and disassemble. The limit sleeve is set to limit the fender to prevent the fender from falling off.

[0016] 3. The fastening screw is threadedly connected to the side wall of the fixing ring and the fixing plate. A spring washer is sleeved around the outer periphery of the fastening screw. The spring washer is made of elastic material and provides an additional reverse force, so that the fastening screw is not easy to loosen when vibrating or subjected to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 This is a cross-sectional view of the detachable component structure of the utility model;

[0020] Figure 4 This utility model Figure 3 A partial enlarged view of point A in the middle;

[0021] Figure 5This is a cross-sectional view of the fastening assembly structure of the utility model;

[0022] Figure 6 This utility model Figure 5 A partial enlarged view of point B in the middle;

[0023] The marks in the figure are: 1-core shaft body, 2-fixed plate, 3-mudguard, 4-limiting sleeve, 5-control inner hole, 6-connecting movable rod, 7-control button, 8-movable inner hole, 9-fixed plug, 10-anti-drop hole, 11-damper, 12-elastic piece, 13-mounting groove, 14-fixing ring, 15-fastening bolt, 16-spring washer, 17-fixing cap, 18-fastening groove, 19-fastening hole, 20-bearing connection end, 21-rear axle connection end, 22-first cavity, 23-second cavity, 24-annular buffer pad. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0025] Example 1:

[0026] This embodiment provides a rear axle core shaft, including:

[0027] A core shaft body 1, one end of the core shaft body 1 is provided with a bearing connection end 20, and the other end is provided with a rear axle connection end 21;

[0028] A fixed disk 2 is fixedly connected to the center of the outer wall of the core shaft body 1;

[0029] A fender 3 is slidably connected to the outer wall of the fixed plate 2;

[0030] A limiting sleeve 4 abuts against a surface of the fender 3 away from the rear axle connection end 21;

[0031] The detachable component is arranged between the limiting sleeve 4 and the core shaft body 1, and the limiting sleeve 4 is connected to the core shaft body 1 through the detachable component.

[0032] It can be seen from this embodiment that a bearing connection end 20 is provided at one end of the core shaft body 1, and a rear axle connection end 21 is provided at the other end. A fixed plate 2 is fixedly connected to the center of the outer wall of the core shaft body 1, and a mudguard 3 is slidably connected to the outer wall of the fixed plate 2. When the mudguard 3 is worn or needs to be cleaned after being used for a long time, it can be replaced or removed separately for easy cleaning, reducing the waste caused by the overall replacement of the rear axle core shaft. The limit sleeve 4 is connected to the core shaft body 1 through a detachable component, and is easy to install and disassemble. The limit sleeve 4 is provided to limit the mudguard 3 to prevent it from falling off.

[0033] Example 2:

[0034] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] Removable components include:

[0036] Control inner hole 5, control inner holes 5 are opened on both sides of the outer wall of the limit sleeve 4;

[0037] Connect the movable rod 6, and fix the two ends of the movable rod 6 to the two ends of the control inner hole 5;

[0038] A control button 7 is movably connected to the outer wall of the movable rod 6;

[0039] A movable inner hole 8 is provided on one side of the inner wall of the control inner hole 5;

[0040] A fixed plug-in block 9 is connected to one side of the inner portion of the control button 7, and the outer wall of the fixed plug-in block 9 is movably connected to the inner wall of the movable inner hole 8;

[0041] Anti-dropout hole 10: An anti-dropout hole 10 is opened on the outer wall of the core shaft body 1.

[0042] It can be seen from this embodiment that the fixed plug 9 is inserted inwardly into the anti-drop hole 10, which enhances the firmness and fixes the core shaft body 1 to the limit sleeve 4. The outer wall of the fixed plug 9 is movably connected to the inner wall of the movable inner hole 8, which increases flexibility.

[0043] Example 3:

[0044] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0045] Removable components also include:

[0046] The damper 11 controls one side of the inner wall of the inner hole 5 to be fixedly connected to one end of the damper 11;

[0047] The elastic member 12 is sleeved on the outer wall of the damper 11 , and the other end of the damper 11 is fixedly connected to the rear end outer surface of one side of the control button 7 .

[0048] It can be seen from this embodiment that during installation, the control button 7 is manually pressed inward at one end connected to the damper 11, and the limit sleeve 4 is slid on the core shaft body 1 through the bearing connection end 20. When the fixed plug 9 is aligned with the anti-drop hole 10, the control button 7 is released, and the rear end of the control button 7 is pushed forward by using the damper 11 and the elastic member 12. The elastic member 12 has a certain tension, which will support the rear end of the control button 7, and after the rear end of the control button 7 is pushed forward, the front end of the fixed plug 9 on the side of the control button 7 will be inserted inward into the anti-drop hole 10, thereby enhancing the firmness and firmly connecting the core shaft body 1 and the limit sleeve 4 together. Disassembly is also relatively convenient, and the limit sleeve 4 is against the fender 3, thereby enhancing the firmness of the fender 3.

[0049] Example 4:

[0050] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0051] Also includes:

[0052] A mounting groove 13, which is provided on a side of the fixing plate 2 and the fender 3 away from the rear axle connection end 21;

[0053] A fixing ring 14 is disposed in the mounting groove 13;

[0054] Fastening assembly, the fixing ring 14 is fixedly connected to the fixing plate 2 through the fastening assembly.

[0055] It can be seen from this embodiment that the fixing ring 14 is fixedly connected to the fixing plate 2 through a fastening assembly, further limiting the position of the fender 3 to prevent the fender 3 from falling off and affecting work.

[0056] Example 5:

[0057] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] The fastening assembly includes:

[0059] A fastening screw 15, the fastening screw 15 being screwed to the fixing ring 14 and the side wall of the fixing plate 2;

[0060] Spring washer 16, a spring washer 16 is sleeved on the outer periphery of the fastening screw 15;

[0061] A fixing cap 17 is provided on one side of the fastening bolt 15 .

[0062] It can be seen from this embodiment that the fastening screw 15 is threadedly connected to the fixing ring 14 and the side wall of the fixing plate 2, and a spring washer 16 is sleeved on the outer periphery of the fastening screw 15. The spring washer 16 is made of elastic material and provides an additional reverse force, so that the fastening screw 15 is not easy to loosen when vibrated or subjected to external force.

[0063] Example 6:

[0064] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] A fastening groove 18 is formed on a side of the fixing cap 17 away from the fixing plate 2 , and the cross section of the fastening groove 18 is hexagonal.

[0066] It can be seen from this embodiment that the fastening groove 6 on the inner side of the fixing cap 17 can facilitate the fastening of the fastening bolt 15 by external force, thereby improving the fixing effect of the fixing ring 14 and the fixing plate 2.

[0067] Example 7:

[0068] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] A fastening hole 19 is provided at the contact portion between the fixing ring 14 and the fastening screw 15 , and a plurality of fastening screws 15 are evenly arranged around the core shaft body 1 .

[0070] It can be seen from this embodiment that a plurality of fastening screws 15 are evenly arranged around the core shaft body 1. The evenly arranged arrangement can make the fixing ring 14 bear the force evenly, thereby improving the connection effect.

[0071] Example 8:

[0072] This embodiment provides a rear axle core shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] A first cavity 22 is defined on the side of the rear axle connection end 21 away from the bearing connection end 20 , and a second cavity 23 is defined on the side of the first cavity 22 close to the bearing connection end 20 . An annular buffer pad 24 is installed in the second cavity 23 .

[0074] It can be seen from this embodiment that, through the provision of the first cavity 22 and the second cavity 23, the internal hollow area of ​​the rear axle connecting end 21 is made to fit the rear axle connecting part more closely, making the interception tighter, and at the same time playing a limiting and fixing effect. The annular buffer pad 24 can further improve the buffering effect, play a buffering role when axial movement occurs, prevent collision and damage, and improve stability. The annular buffer pad 24 is detachably connected, which is convenient for installation and disassembly, thereby improving the work efficiency of installation and replacement.

[0075] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A rear axle core shaft, characterized in that: include: A core shaft body (1), wherein one end of the core shaft body (1) is provided with a bearing connection end (20), and the other end is provided with a rear axle connection end (21); A fixed disk (2), the center of the outer wall of the core shaft body (1) is fixedly connected to the fixed disk (2); A fender (3), wherein the outer wall of the fixed plate (2) is slidably connected to the fender (3); A limiting sleeve (4), wherein the limiting sleeve (4) abuts against a side of the fender (3) away from the rear axle connection end (21); A detachable component is provided between the limiting sleeve (4) and the core shaft body (1); the limiting sleeve (4) is connected to the core shaft body (1) via the detachable component.

2. The rear axle core shaft according to claim 1, characterized in that: The detachable components include: A control inner hole (5), wherein the control inner holes (5) are opened on both sides of the outer wall of the limiting sleeve (4); A connecting movable rod (6), wherein both ends of the connecting movable rod (6) are fixedly connected to both ends of the control inner hole (5); A control button (7), wherein the outer wall of the connecting movable rod (6) is movably connected to the control button (7); A movable inner hole (8), wherein a movable inner hole (8) is opened on one side of the inner wall of the control inner hole (5); A fixed plug-in block (9), one side of the interior of the control button (7) is connected to the fixed plug-in block (9), and the outer wall of the fixed plug-in block (9) is movably connected to the inner wall of the movable inner hole (8); An anti-drop hole (10) is provided on the outer wall of the core shaft body (1).

3. The rear axle core shaft according to claim 2, characterized in that: The detachable component further comprises: A damper (11), wherein one side of the inner wall of the control inner hole (5) is fixedly connected to one end of the damper (11); An elastic member (12) is provided on the outer wall of the damper (11), and the other end of the damper (11) is fixedly connected to the rear end outer surface of one side of the control button (7).

4. The rear axle core shaft according to claim 3, characterized in that: Also includes: A mounting groove (13), the mounting groove (13) being provided on a side of the fixing plate (2) and the fender (3) away from the rear axle connection end (21); A fixing ring (14), wherein the fixing ring (14) is arranged in the mounting groove (13); A fastening assembly, wherein the fixing ring (14) is fixedly connected to the fixing disk (2) via the fastening assembly.

5. The rear axle core shaft according to claim 4, characterized in that: The fastening assembly comprises: A fastening screw (15), wherein the fastening screw (15) is screwed to the fixing ring (14) and the side wall of the fixing plate (2); A spring washer (16), wherein the outer periphery of the fastening screw (15) is provided with a spring washer (16); A fixing cap (17) is provided on one side of the fastening screw (15).

6. The rear axle core shaft according to claim 5, characterized in that: A fastening groove (18) is provided on a side of the fixing cap (17) away from the fixing plate (2), and the cross section of the fastening groove (18) is hexagonal.

7. The rear axle core shaft according to claim 6, characterized in that: A fastening hole (19) is provided at the contact portion between the fixing ring (14) and the fastening screw (15), and a plurality of fastening screws (15) are evenly arranged around the core shaft body (1).

8. The rear axle core shaft according to claim 7, characterized in that: A first cavity (22) is provided on a side of the rear axle connecting end (21) away from the bearing connecting end (20), a second cavity (23) is provided on a side of the first cavity (22) close to the bearing connecting end (20), and an annular buffer pad (24) is installed in the second cavity (23).

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