Automobile double-tire rear axle hub unit

Abstract

The utility model discloses an automobile double-tire rear axle hub unit which comprises an outer protective ring, a bearing inner ring is arranged in the outer protective ring, an upper bearing outer ring and a lower bearing outer ring are arranged outside the bearing inner ring in a sleeved mode, a bearing rotating groove is formed in the upper bearing outer ring, and a bearing rotating shaft is arranged in the bearing rotating groove. And a bearing rotating groove is formed in one side of the outer protection ring, bearing steel balls are installed in the bearing rotating groove, a lubricating groove is formed in one side of the outer protection ring, a sealing ring is arranged in the lubricating groove, and an inner plug rod is inserted into one side of the lubricating groove. Through the arrangement of the inner bearing lubricating structure, the bearing steel balls in the bearing rotating grooves in the upper bearing outer ring and the lower bearing outer ring rotate with the outer protective ring, and then the inner plug rod is pulled out from the interior of the sealing ring in the lubricating groove in one side of the outer protective ring; lubricating grease is injected into the upper bearing outer ring and the lower bearing outer ring in the outer protection ring through the lubricating grooves, and therefore the inner bearing lubricating function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of end head structures, in particular to a dual-tire rear axle wheel hub unit for an automobile. Background Art

[0002] The rear axle of a car refers to the rear drive shaft component for transmitting power to the vehicle. It consists of two half-bridges and can implement half-bridge differential movement. It is also a device used to support the wheels and connect the rear wheels. The dual-tire rear axle hub unit, most of which are trucks, is the hub bearing installed on the rear axle.

[0003] When the hub unit is in operation for a long time, the hub unit will be disassembled and greased for lubrication during maintenance, which takes a long time and is cumbersome and troublesome. Therefore, we propose an automobile dual-tire rear axle hub unit to improve the above problems. Utility Model Content

[0004] The utility model aims to provide a dual-tire rear axle hub unit for an automobile to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dual-tire rear axle wheel hub unit for an automobile, comprising an outer protective ring, a bearing inner ring is arranged inside the outer protective ring, an upper bearing outer ring and a lower bearing outer ring are sleeved on the outside of the bearing inner ring, a bearing rotation groove is opened inside the upper bearing outer ring, a bearing steel ball is installed inside the bearing rotation groove, a lubrication groove is arranged on one side of the outer protective ring, a sealing ring is arranged inside the lubrication groove, and an inner plug rod is inserted on one side of the lubrication groove.

[0006] Preferably, the bearing steel ball is connected to the upper bearing outer ring through a bearing rotation groove, and the bearing inner ring passes through the upper bearing outer ring and the lower bearing outer ring, so that the bearing inner ring is rotationally connected to the outer protective ring through the upper bearing outer ring and the lower bearing outer ring.

[0007] Preferably, the lubrication groove is opened on one side of the outer protective ring, the sealing ring passes through the interior of the lubrication groove, and the inner plug rod passes through the lubrication groove and contacts the sealing ring.

[0008] Preferably, a protective cover is installed on the top of the outer protective ring, an upper ABS plug is provided on the top of the protective cover, a connecting screw hole is provided inside the upper ABS plug, a fixing seat is installed on the top of the protective cover, a connecting rope is connected to one side of the fixing seat, a dust plug is connected to one side of the connecting rope, and a connecting flange is provided on the outer wall of the outer protective ring.

[0009] Preferably, the dust plug is connected to the protective cover via a connecting rope and a fixing seat, the dust plug is snap-fitted to the upper ABS plug and the connecting screw hole, and the upper ABS plug is connected to the outer protective ring via the protective cover.

[0010] Preferably, the bottom of the outer protective ring is connected to a lower rotating seat, a connecting seat is arranged outside the lower rotating seat, and the bottom of the lower rotating seat is connected to a lower connecting sleeve.

[0011] Preferably, an installation groove is opened inside the connecting seat, an anti-dropping block is arranged inside the installation groove, a connecting screw is inserted inside the installation groove, a fixing groove is opened inside the connecting seat, an anti-slip plug is installed inside the fixing groove, and an air vent is opened inside the connecting seat.

[0012] Preferably, the connecting screw passes through the mounting groove inside the connecting seat and contacts the anti-slip block, and the top of the connecting screw is clamped with the fixing groove at the top of the connecting seat, so that the connecting screw contacts the anti-slip plug inside the fixing groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the automobile dual-tire rear axle wheel hub unit not only realizes the inner bearing lubrication function and the upper interface protection function, but also realizes the screw rod anti-falling function;

[0014] (1) By setting up the inner bearing lubrication structure, the utility model has the following advantages: when in use, the inner ring of the bearing inside the outer protective ring contacts the inner wall of the outer protective ring through the upper bearing outer ring and the lower bearing outer ring, so that the bearing steel balls in the bearing rotation grooves inside the upper bearing outer ring and the lower bearing outer ring rotate with the outer protective ring, and then the inner plug rod is pulled out from the sealing ring inside the lubrication groove on one side of the outer protective ring, and the lubricating grease is injected into the upper bearing outer ring and the lower bearing outer ring inside the outer protective ring through the lubrication groove, thereby realizing the lubrication function of the inner bearing;

[0015] (2) By setting up the upper interface protection structure, the utility model is beneficial in that: when in use, the dust plug connected to one side of the top fixing seat of the protective cover through the connecting rope is pulled out from the top of the upper ABS plug and the connecting screw hole, and after the wiring harness plug is inserted into the upper ABS plug, one side of the plug is connected to the connecting screw hole through one side of the wiring harness through the screw rod, thereby realizing the upper interface protection function;

[0016] (3) By setting up a screw anti-falling structure, the utility model is beneficial in that: when in use, the connecting screw is inserted into the installation groove inside the connecting seat, the top end of the connecting screw is engaged with the fixed groove and the anti-slip plug at the top end of the connecting seat, and the connecting screw is engaged with the anti-falling block inside the installation groove, so as to prevent the connecting screw from falling off from the connecting seat, thereby realizing the screw anti-falling function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the front cross-sectional structure of the outer protective ring of the utility model;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged cross-section structure at the middle A;

[0020] Figure 4 This is a schematic diagram of the top view of the protective cover of the utility model;

[0021] Figure 5 It is a schematic cross-sectional structure diagram of the connecting seat and the connecting screw rod of the utility model.

[0022] In the figure: 1. Upper ABS plug; 2. Protective cover; 3. Connecting flange; 4. Outer protective ring; 5. Lower rotating seat; 6. Connecting seat; 7. Lower connecting sleeve; 8. Connecting screw; 9. Connecting screw hole; 10. Fixed seat; 11. Dust plug; 12. Air vent; 13. Connecting rope; 14. Mounting groove; 15. Anti-slip block; 16. Fixed groove; 17. Anti-skid plug; 18. Bearing steel ball; 19. Upper bearing outer ring; 20. Bearing rotating groove; 21. Bearing inner ring; 22. Lower bearing outer ring; 23. Inner plug rod; 24. Lubrication groove; 25. Sealing ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-5 A dual-tire rear axle wheel hub unit for an automobile comprises an outer protective ring 4, a bearing inner ring 21 is arranged inside the outer protective ring 4, an upper bearing outer ring 19 and a lower bearing outer ring 22 are sleeved outside the bearing inner ring 21, a bearing rotation groove 20 is opened inside the upper bearing outer ring 19, a bearing steel ball 18 is installed inside the bearing rotation groove 20, a lubrication groove 24 is arranged on one side of the outer protective ring 4, a sealing ring 25 is arranged inside the lubrication groove 24, and an inner plug rod 23 is inserted on one side of the lubrication groove 24;

[0025] The bearing steel ball 18 is connected to the upper bearing outer ring 19 through the bearing rotation groove 20, and the bearing inner ring 21 penetrates the upper bearing outer ring 19 and the lower bearing outer ring 22, so that the bearing inner ring 21 is rotatably connected to the outer protection ring 4 through the upper bearing outer ring 19 and the lower bearing outer ring 22. The lubrication groove 24 is opened on one side of the outer protection ring 4, the sealing ring 25 penetrates the lubrication groove 24, and the inner plug rod 23 penetrates the lubrication groove 24 and contacts the sealing ring 25.

[0026] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, by setting the inner bearing lubrication structure, when in use, the bearing inner ring 21 inside the outer protective ring 4 contacts the inner wall of the outer protective ring 4 through the upper bearing outer ring 19 and the lower bearing outer ring 22, so that the bearing steel balls 18 in the bearing rotating grooves 20 inside the upper bearing outer ring 19 and the lower bearing outer ring 22 rotate with the outer protective ring 4, and then the inner plug rod 23 is drawn out from the sealing ring 25 inside the lubrication groove 24 on one side of the outer protective ring 4, and the lubricating grease is injected into the upper bearing outer ring 19 and the lower bearing outer ring 22 inside the outer protective ring 4 through the lubrication groove 24, thereby realizing the inner bearing lubrication function.

[0027] Embodiment 2: The dust plug 11 is connected to the protective cover 2 through the connecting rope 13 and the fixing seat 10, the dust plug 11 is clamped with the upper ABS plug 1 and the connecting screw hole 9, and the upper ABS plug 1 is connected to the outer protective ring 4 through the protective cover 2;

[0028] The bottom of the outer protective ring 4 is connected to a lower rotating seat 5, the outside of the lower rotating seat 5 is provided with a connecting seat 6, and the bottom of the lower rotating seat 5 is connected to a lower connecting shaft sleeve 7;

[0029] Specifically, Figure 1 and Figure 4 As shown, by setting up the upper interface protection structure, when in use, the dust plug 11 connected to one side of the top fixing seat 10 of the protective cover 2 through the connecting rope 13 is pulled out from the top of the upper ABS plug 1 and the connecting screw hole 9, and after the wiring harness plug is inserted into the upper ABS plug 1, one side of the plug is connected to the connecting screw hole 9 through one side of the wiring harness through a screw, thereby realizing the upper interface protection function.

[0030] Embodiment 3: The connection seat 6 has a mounting groove 14 formed inside, an anti-dropping block 15 is provided inside the mounting groove 14, a connecting screw 8 is inserted inside the mounting groove 14, a fixing groove 16 is formed inside the connection seat 6, an anti-slip plug 17 is installed inside the fixing groove 16, and a vent hole 12 is formed inside the connection seat 6;

[0031] The connecting screw 8 passes through the mounting groove 14 inside the connecting seat 6 and contacts the anti-dropping block 15, and the top of the connecting screw 8 is clamped with the fixing groove 16 at the top of the connecting seat 6, so that the connecting screw 8 contacts the anti-slip plug 17 inside the fixing groove 16;

[0032] Specifically, Figure 1 and Figure 5 As shown, by setting a screw anti-falling structure, when in use, the connecting screw 8 is inserted into the mounting groove 14 inside the connecting seat 6, so that the top end of the connecting screw 8 is engaged with the fixing groove 16 and the anti-slip plug 17 at the top end of the connecting seat 6, and the connecting screw 8 is engaged with the anti-falling block 15 inside the mounting groove 14, so as to prevent the connecting screw 8 from falling off from the connecting seat 6, thereby realizing the screw anti-falling function.

[0033] Working principle: When using the utility model, first insert multiple sets of connecting screws 8 into the installation grooves 14 inside the connecting seat 6, so that the top of the connecting screw 8 is clamped with the fixing groove 16 and the anti-skid plug 17 at the top of the connecting seat 6, and the connecting screw 8 is clamped with the anti-dropping block 15 inside the installation groove 14 to prevent the connecting screw 8 from falling off from the connecting seat 6. Then, the outer protective ring 4 is installed and fixed to the rear axle of the automobile through the connecting screw 8 on the connecting seat 6 outside the lower rotating seat 5, and then the dust plug 11 connected to the top fixing seat 10 of the top protective cover 2 of the outer protective ring 4 is pulled out from the top of the upper ABS plug 1 and the top of the connecting screw hole 9 through the connecting rope 13. After the automobile wiring harness plug is inserted into the upper ABS plug 1, one side of the plug is connected to the connecting screw hole 9 through the screw through the one side of the wiring harness, and finally the inner plug rod 23 is pulled out from the sealing ring 25 inside the lubrication groove 24 on one side of the outer protective ring 4, and the lubricating grease is injected into the upper bearing outer ring 19 and the lower bearing outer ring 22 inside the outer protective ring 4 through the lubrication groove 24, so that the bearing inner ring 21 inside the outer protective ring 4 contacts the inner wall of the outer protective ring 4 through the upper bearing outer ring 19 and the lower bearing outer ring 22, and the bearing steel ball 18 in the bearing rotation groove 20 inside the upper bearing outer ring 19 and the lower bearing outer ring 22 rotates with the outer protective ring 4.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A dual-tire rear axle wheel hub unit for an automobile, comprising an outer protective ring (4), characterized in that: A bearing inner ring (21) is arranged inside the outer protective ring (4), an upper bearing outer ring (19) and a lower bearing outer ring (22) are sleeved outside the bearing inner ring (21), a bearing rotation groove (20) is opened inside the upper bearing outer ring (19), a bearing steel ball (18) is installed inside the bearing rotation groove (20), a lubrication groove (24) is arranged on one side of the outer protective ring (4), a sealing ring (25) is arranged inside the lubrication groove (24), and an inner plug rod (23) is inserted into one side of the lubrication groove (24).

2. The dual-tire rear axle hub unit for an automobile according to claim 1, characterized in that: The bearing steel ball (18) is connected to the upper bearing outer ring (19) through the bearing rotation groove (20), and the bearing inner ring (21) penetrates the interior of the upper bearing outer ring (19) and the lower bearing outer ring (22), so that the bearing inner ring (21) is rotationally connected to the outer protective ring (4) through the upper bearing outer ring (19) and the lower bearing outer ring (22).

3. The dual-tire rear axle wheel hub unit for an automobile according to claim 1, characterized in that: The lubricating groove (24) is provided on one side of the outer protective ring (4), the sealing ring (25) penetrates the interior of the lubricating groove (24), and the inner plug rod (23) penetrates the lubricating groove (24) and contacts the sealing ring (25).

4. The dual-tire rear axle wheel hub unit for an automobile according to claim 1, characterized in that: A protective cover (2) is installed at the top of the outer protective ring (4), an upper ABS plug (1) is arranged at the top of the protective cover (2), a connecting screw hole (9) is provided inside the upper ABS plug (1), a fixing seat (10) is installed at the top of the protective cover (2), a connecting rope (13) is connected to one side of the fixing seat (10), a dust plug (11) is connected to one side of the connecting rope (13), and a connecting flange (3) is arranged on the outer wall of the outer protective ring (4).

5. The dual-tire rear axle wheel hub unit for an automobile according to claim 4, characterized in that: The dust plug (11) is connected to the protective cover (2) via a connecting rope (13) and a fixing seat (10); the dust plug (11) is snap-fitted to the upper ABS plug (1) and the connecting screw hole (9); and the upper ABS plug (1) is connected to the outer protective ring (4) via the protective cover (2).

6. The dual-tire rear axle wheel hub unit for an automobile according to claim 1, characterized in that: The bottom of the outer protective ring (4) is connected to a lower rotating seat (5), a connecting seat (6) is arranged outside the lower rotating seat (5), and the bottom of the lower rotating seat (5) is connected to a lower connecting shaft sleeve (7).

7. The dual-tire rear axle wheel hub unit for an automobile according to claim 6, characterized in that: The connection seat (6) is provided with a mounting groove (14) inside, an anti-dropping block (15) is arranged inside the mounting groove (14), a connecting screw (8) is inserted inside the mounting groove (14), a fixing groove (16) is provided inside the connection seat (6), an anti-slip plug (17) is installed inside the fixing groove (16), and a vent hole (12) is provided inside the connection seat (6).

8. The dual-tire rear axle wheel hub unit for an automobile according to claim 7, characterized in that: The connecting screw (8) passes through the mounting groove (14) inside the connecting seat (6) and contacts the anti-slip block (15), and the top of the connecting screw (8) is clamped with the fixing groove (16) at the top of the connecting seat (6), so that the connecting screw (8) contacts the anti-slip plug (17) inside the fixing groove (16).

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