Drive axle wheel side assembly with ABS wheel speed sensor

Abstract

A wheel-end assembly of a drive axle with an ABS wheel speed sensor, which relates to a wheel-end assembly of a drive axle and includes an axle tube, an oil seal seat ring, an ABS fixing bracket, an ABS gear ring, a wheel hub, a brake drum assembly, and an ABS wheel speed sensor. The ABS gear ring is press-fitted on the wheel hub and the brake drum assembly. The wheel hub, the brake drum assembly, and the oil seal seat ring are respectively sleeved on the axle tube. And the inner end of the oil seal seat ring is installed in the stop of the wheel hub and the brake drum assembly for installing the oil seal. The outer end of the seal seat ring is located outside the wheel hub and the brake drum assembly. The ABS fixing bracket is fixedly installed on the outer circumferential surface of the outer end of the oil seal seat ring, and the ABS wheel speed sensor is installed in the ABS fixing bracket. The present invention has the characteristics of compact structure, material saving, high assembly efficiency, convenient assembly and disassembly, reliable performance, and strong versatility, and has good popularization and application prospects in the axle industry.

Description

Technical Field

[0001] The present invention relates to a wheel-end assembly of a drive axle, in particular to a wheel-end assembly of a drive axle with an ABS wheel speed sensor. Background Art

[0002] The ABS anti-lock braking system is an automotive safety control system with functions such as anti-slip and anti-lock. The ABS wheel speed sensor is an important component of the ABS anti-lock braking system. This ABS wheel speed sensor is used to measure the rotational speed of the wheel in real time and transmit it to the ABS electronic control unit through an electronic signal. The ABS electronic control unit analyzes and calculates these electronic signals to control the slip ratio of the wheel, thereby improving the safety and reliability during vehicle braking. The ABS fixed bracket is a bracket for fixedly installing the ABS wheel speed sensor. Currently, in a drum rear axle, there are the following two assembly positions for the ABS fixed bracket:

[0003] One is to assemble it at the head of the brake backing plate bolt. Drill a threaded hole at the head of the brake backing plate bolt, and then fix the ABS fixed bracket at the brake backing plate bolt through a bolt and a spring washer. For products with a relatively far distance between the ring gear positions, the ABS fixed bracket needs to be designed very high. On the one hand, it occupies a large space, and on the other hand, it increases the material and cost. When using this assembly method in mass production, when assembling the brake backing plate bolt, attention also needs to be paid to the bolt assembly position of the ABS fixed bracket and the sorting of its bolts. For the assembly, there is an additional process, which affects the assembly efficiency.

[0004] The other is to weld the ABS fixed bracket to the axle tube. This method is only applicable to brakes with large specifications. The brake backing plate stop of brakes with small specifications cannot pass through the ABS fixed bracket. This structure has great limitations in use and is not applicable to all products, and its versatility is low; moreover, for the ABS fixed bracket welded on, its position accuracy and installation error are relatively large, and it cannot well guarantee the perpendicularity of the probe after assembling the ABS wheel speed sensor, which has a certain impact on the output signal. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a wheel-end assembly of a drive axle with an ABS wheel speed sensor to solve the deficiencies of the above-mentioned prior art, such as large space occupation, increased cost, low assembly efficiency, and low versatility.

[0006] The technical solution to solve the above technical problems is as follows: A wheel-end assembly of a driving axle with an ABS wheel speed sensor, including an axle tube, an oil seal seat ring, an ABS fixing bracket, an ABS gear ring, a hub, a brake drum assembly, and an ABS wheel speed sensor. The ABS gear ring is press-fitted on the hub and the brake drum assembly. The hub, the brake drum assembly, and the oil seal seat ring are respectively sleeved on the axle tube. The inner end of the oil seal seat ring is installed in the stop of the hub and the brake drum assembly for installing the oil seal. The outer end of the oil seal seat ring is located outside the hub and the brake drum assembly. It is characterized in that: The ABS fixing bracket is fixedly installed on the outer circumferential surface of the outer end of the oil seal seat ring, and the ABS wheel speed sensor is installed inside the ABS fixing bracket.

[0007] A further technical solution of the present invention is: The ABS fixing bracket includes a sleeve and a fixing plate. The fixing plate is fixedly connected to the outer circumferential surface of the sleeve, and the fixing plate is fixedly connected to the outer circumferential surface of the outer end of the oil seal seat ring. The ABS wheel speed sensor is installed inside the sleeve.

[0008] A still further technical solution of the present invention is: An ABS fixing bracket installation plane is machined on the outer circumferential surface of the outer end of the oil seal seat ring, and an ABS fixing bracket threaded installation hole is machined on the ABS fixing bracket installation plane. An ABS fixing bracket hole corresponding to the ABS fixing bracket threaded installation hole is opened on the fixing plate. A threaded fastener passes through the ABS fixing bracket hole and is threadedly connected to the ABS fixing bracket threaded installation hole to fix the ABS fixing bracket to the oil seal seat ring.

[0009] Due to the above structure, compared with the prior art, the wheel-end assembly of the driving axle with an ABS wheel speed sensor of the present invention has the following beneficial effects:

[0010] 1. Compact structure and material saving:

[0011] Since the ABS wheel speed sensor of the present invention is directly fixed on the oil seal seat ring through the ABS fixing bracket and is close to the ABS gear ring, there is no need to design an overly large or high ABS fixing bracket, making the structure of the present invention compact, occupying less space, and also saving materials and reducing the production cost of the enterprise.

[0012] 2. High assembly efficiency:

[0013] Since the ABS fixing bracket of the present invention is fixedly installed on the outer circumferential surface of the exposed end of the oil seal seat ring, the oil seal seat ring and the ABS fixing bracket can be assembled together offline in advance before assembling the driving axle, and then pressed on the line, reducing the cycle time on the line and improving the assembly efficiency, greatly enhancing the competitiveness of the enterprise.

[0014] 3. Convenient assembly and disassembly:

[0015] The ABS wheel speed sensor of the present invention is fixedly installed on the outer circumferential surface of the outer end of the oil seal seat ring through an ABS fixed bracket, which is equivalent to integrating the ABS wheel speed sensor and the oil seal seat ring into one body. Its assembly and disassembly are convenient, and it is also easier to repair.

[0016] 4. More reliable performance:

[0017] Since the ABS fixed bracket of the present invention includes a sleeve and a fixing plate, an ABS fixed bracket installation plane is machined on the outer circumferential surface of the outer end of the oil seal seat ring, and an ABS fixed bracket threaded installation hole is machined on this ABS fixed bracket installation plane. An ABS fixed bracket hole is opened on the fixing plate, and a threaded fastener passes through this ABS fixed bracket hole and is threadedly connected to the ABS fixed bracket threaded installation hole to fix the ABS fixed bracket to the oil seal seat ring. And the above-mentioned ABS fixed bracket installation plane, ABS fixed bracket threaded installation hole, and ABS fixed bracket hole of the oil seal seat ring are all machined by machine, which can ensure the position accuracy and flatness of the ABS fixed bracket installation plane, ABS fixed bracket threaded installation hole, and ABS fixed bracket hole. After assembling the ABS fixed bracket and the ABS wheel speed sensor, its assembly error is smaller, which can better ensure the perpendicularity of the ABS wheel speed sensor probe and the quality of the transmitted signal. Therefore, the performance of the present invention is more reliable.

[0018] 5. Strong universality:

[0019] The oil seal seat ring of the present invention can match various specifications of brake products, with stronger universality, so it has good prospects for popularization and application in the axle industry.

[0020] Next, in combination with the drawings and embodiments, the technical features of the drive axle wheel side assembly with an ABS wheel speed sensor of the present invention will be further described. Brief Description of the Drawings

[0021] Figure 1 : The main view sectional view of the drive axle wheel side assembly with an ABS wheel speed sensor of the present invention,

[0022] Figure 2 : The three-dimensional view of the drive axle wheel side assembly with an ABS wheel speed sensor of the present invention,

[0023] Figure 3 : The main view sectional view of the oil seal seat ring described in Embodiment 1,

[0024] Figure 4 : Figure 3 The left view of,

[0025] Figure 5 : Figure 3 The top view of,

[0026] Figure 6: Perspective view of the oil seal seat ring described in the first embodiment;

[0027] Figure 7 : Front view cross-section of the ABS fixing bracket described in the first embodiment,

[0028] Figure 8 : Figure 7 Left view of,

[0029] Figure 9 : Figure 7 Top view of,

[0030] Figure 10 : Perspective view of the ABS fixing bracket described in the first embodiment,

[0031] In the above-mentioned drawings, the reference numerals are explained as follows:

[0032] 1 - axle tube,

[0033] 2 - oil seal seat ring, 21 - inner end of the oil seal seat ring, 22 - outer end of the oil seal seat ring,

[0034] 221 - ABS fixing bracket mounting plane, 222 - ABS fixing bracket threaded mounting hole,

[0035] 3 - ABS fixing bracket, 31 - sleeve, 32 - fixing plate, 321 - ABS fixing bracket hole,

[0036] 4 - threaded fastener,

[0037] 5 - ABS gear ring,

[0038] 6 - hub and brake drum assembly,

[0039] 7 - ABS wheel speed sensor. Specific implementation mode

[0040] First embodiment:

[0041] A drive axle wheel side assembly with an ABS wheel speed sensor, as Figures 1 to 2 shown, including an axle tube 1, an oil seal seat ring 2, an ABS fixing bracket 3, an ABS gear ring 5, a hub and brake drum assembly 6, and an ABS wheel speed sensor 7, wherein:

[0042] The described ABS gear ring 5 is press-fitted on the wheel hub and the brake drum assembly 6. The wheel hub and the brake drum assembly 6 are prior art. The wheel hub and the brake drum assembly 6 and the oil seal seat ring 2 are respectively sleeved on the axle tube 1, and the inner end 21 of the oil seal seat ring is installed in the stop of the wheel hub and the brake drum assembly 6 for installing the oil seal. The outer end 22 of the seal seat ring is located outside the wheel hub and the brake drum assembly 6. An ABS fixed bracket mounting plane 221 is machined on the outer circumferential surface of the outer end 22 of the oil seal seat ring, and an ABS fixed bracket threaded mounting hole 222 is machined on the ABS fixed bracket mounting plane 221 (see Figures 3 to 6 ).

[0043] The described ABS fixed bracket 3 includes a sleeve 31 and a fixing plate 32 (see Figures 7 to 10 ). The fixing plate 32 is fixedly connected to the outer circumferential surface of the sleeve 31, and the fixing plate 32 is fixedly connected to the outer circumferential surface of the outer end 22 of the oil seal seat ring. The ABS wheel speed sensor 7 is installed in the sleeve 31. An ABS fixed bracket hole 321 corresponding to the ABS fixed bracket threaded mounting hole 222 is opened on the fixing plate 32. A threaded fastener 4 (including a screw and a spring washer) passes through the ABS fixed bracket hole 321 and is threadedly connected to the ABS fixed bracket threaded mounting hole 222 to fix the ABS fixed bracket 3 to the oil seal seat ring 2.

[0044] The present invention integrates the ABS wheel speed sensor and the oil seal seat ring. Before assembling the drive axle, the oil seal seat ring and the ABS fixed bracket can be assembled offline in advance and then press-fitted online, reducing the cycle time online and greatly improving the assembly efficiency.

Claims

1. A wheel-end assembly of a driving axle with an ABS wheel speed sensor, comprising a shaft tube (1), an oil seal seat ring (2), an ABS fixed bracket (3), an ABS gear ring (5), a wheel hub and a brake drum assembly (6), and an ABS wheel speed sensor (7). The ABS gear ring (5) is press-fitted on the wheel hub and the brake drum assembly (6). The wheel hub and the brake drum assembly (6) and the oil seal seat ring (2) are respectively sleeved on the shaft tube (1). The inner end (21) of the oil seal seat ring is installed in the stop of the wheel hub and the brake drum assembly (6) for installing an oil seal, and the outer end (22) of the oil seal seat ring is located outside the wheel hub and the brake drum assembly (6). It is characterized in that: The described ABS fixed bracket (3) is fixedly installed on the outer circumferential surface of the outer end (22) of the oil seal seat ring, and the ABS wheel speed sensor (7) is installed inside the ABS fixed bracket (3); the ABS fixed bracket (3) includes a sleeve (31) and a fixing plate (32), the fixing plate (32) is fixedly connected to the outer circumferential surface of the sleeve (31), and the fixing plate (32) is fixedly connected to the outer circumferential surface of the outer end (22) of the oil seal seat ring, and the ABS wheel speed sensor (7) is installed inside the sleeve (31).

2. The wheel side assembly of the drive axle with an ABS wheel speed sensor according to claim 1, characterized in that: An ABS fixed bracket installation plane (221) is machined on the outer circumferential surface of the outer end (22) of the oil seal seat ring, and an ABS fixed bracket threaded installation hole (222) is machined on the ABS fixed bracket installation plane (221). An ABS fixed bracket hole (321) corresponding to the ABS fixed bracket threaded installation hole (222) is opened on the fixing plate (32). A threaded fastener (4) passes through the ABS fixed bracket hole (321) and is threadedly connected to the ABS fixed bracket threaded installation hole (222) to fix the ABS fixed bracket (3) to the oil seal seat ring (2).

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