Novel double-bearing receiving cup

Abstract

The novel double-bearing receiving cup comprises a hub, a steering cup, a receiving cup body, a dog bone and crown teeth, bearing bodies are arranged on the front face and the back face of the steering cup, and inner rings of the two bearing bodies are in interference fit with the outer wall of the receiving cup body. The outer rings of the two bearing bodies are in interference fit with bearing mounting holes in the front face and the back face of the steering cup respectively. The bearing bodies are arranged on the two sides of the steering cup, the radial shaking amount of the hub is lower than that of a single bearing through symmetrical supporting of the double bearings and supporting of the double bearings, the running smoothness of a vehicle can be improved, the coaxial design of the double bearings and the cup connecting bodies is utilized, the small chassis space of a miniature four-wheel drive of 1: 43 and the like is matched, and the steering cup connecting structure is simple in structure and convenient to use. The axial size does not need to be additionally increased during bearing installation, the dog bone is connected with the crown tooth and the clamping groove of the connecting cup body, rigid supporting of the double bearings is matched, continuous power transmission during swing arm vibration is guaranteed, and transmission reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of four-wheel drive vehicle technology, specifically a novel double-bearing connector. Background Technology

[0002] In the axle drive system of RC four-wheel drive vehicles, the "coupling + dogbone" is the mainstream transmission structure, used to transmit power from the gearbox to the wheel hub. However, existing micro-scale four-wheel drive vehicles such as 1:43 are limited by the small chassis space and usually only use a single bearing to support the coupling. Due to the small size of the bearing (such as a 3×6×2mm micro bearing) and the cramped installation space, the single bearing is difficult to effectively restrain the radial wobble of the coupling, resulting in obvious swaying of the wheel hub during driving. This not only affects the vehicle's handling stability but also aggravates component wear. In addition, the single bearing structure is prone to power transmission interruption or efficiency reduction under swing arm vibration or complex road conditions, which cannot meet the high-precision transmission requirements of micro four-wheel drive vehicles. Therefore, we propose a new type of dual-bearing coupling. Utility Model Content

[0003] The purpose of this invention is to provide a novel dual-bearing hub with high stability, solving the problem that existing 1:43 scale micro four-wheel drive vehicles, limited by chassis space, typically use only a single bearing to support the hub. Due to the small size of the bearing (e.g., a 3×6×2mm micro bearing) and the cramped installation space, a single bearing cannot effectively constrain the radial wobble of the hub, causing significant swaying of the wheel hub during driving. This not only affects the vehicle's handling stability but also accelerates component wear. Furthermore, the single-bearing structure is prone to power transmission interruption or efficiency reduction under swing arm vibration or complex road conditions, failing to meet the high-precision transmission requirements of micro four-wheel drive vehicles.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel double-bearing receiving cup, comprising a hub, a steering cup, a receiving cup body, a dog bone, and a crown tooth. The steering cup is provided with bearing bodies on both the front and back sides. The inner rings of the two bearing bodies are interference-fitted with the outer wall of the receiving cup body, and the outer rings of the two bearing bodies are interference-fitted with the bearing mounting holes on the front and back sides of the steering cup, respectively.

[0005] Preferably, the hub is fixedly connected to the cup receiving body by screws.

[0006] Preferably, the circumferential groove of the crown tooth engages with the protrusion at one end of the dog bone, and the protrusion at the other end of the dog bone engages with the groove of the receiving cup body.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. This utility model sets bearing bodies on both sides of the steering cup, and uses the symmetrical support of double bearings. The radial wobble of the wheel hub is lower than that of a single bearing, which can improve the smoothness of vehicle driving. The coaxial design of the double bearings and the receiving cup body is suitable for the narrow chassis space of micro four-wheel drive vehicles such as 1:43. The bearing installation does not require additional axial dimensions. The dog bone and crown tooth and the slot of the receiving cup body are connected, and with the rigid support of the double bearings, the power is continuously transmitted when the swing arm vibrates, which improves the reliability of transmission.

[0009] 2. The wheel hub of this utility model is fixed to the cup body with screws. When disassembling, it can be replaced simply by loosening the screws. There is no need to disassemble the bearing or steering cup, which reduces the difficulty of maintenance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is an exploded view of the present invention.

[0012] In the picture: 1. Wheel hub; 2. Steering cup; 3. Bearing body; 4. Cup holder body; 5. Dog bone; 6. Crown tooth. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0015] Please see Figure 1-2 As shown, this utility model provides a novel double-bearing receiving cup, including a hub 1, a steering cup 2, a receiving cup body 4, a dog bone 5, and a crown tooth 6. Bearing bodies 3 are provided on both the front and back of the steering cup 2. The inner rings of the two bearing bodies 3 are interference-fitted with the outer wall of the receiving cup body 4, and the outer rings of the two bearing bodies 3 are interference-fitted with the bearing mounting holes on the front and back sides of the steering cup 2, respectively. The hub 1 is fixedly connected to the receiving cup body 4 by screws. The circumferential groove of the crown tooth 6 engages with the protrusion at one end of the dog bone 5, and the protrusion at the other end of the dog bone 5 engages with the groove of the receiving cup body 4.

[0016] This technical solution uses bearing bodies 3 on both sides of the steering cup 2, and the symmetrical support of the double bearings reduces the radial wobble of the wheel hub 1 compared to a single bearing, thus improving the ride smoothness. The coaxial design of the double bearings and the receiving cup body 4 is suitable for the narrow chassis space of micro four-wheel drive vehicles such as 1:43. The bearing installation does not require additional axial dimensions. The dog bone 5 and the crown tooth 6 and the receiving cup body 4 are connected by a slot, and the rigid support of the double bearings ensures continuous power transmission when the swing arm vibrates, improving transmission reliability. The wheel hub 1 is fixed to the receiving cup body 4 with screws. Disassembly only requires loosening the screws for replacement, without disassembling the bearings or steering cup 2, reducing maintenance difficulty.

[0017] The working principle of this utility model is as follows: the motor power is transmitted to the crown tooth 6 through the gearbox, the crown tooth 6 drives the dog bone 5 to rotate through the slot, the dog bone 5 then drives the cup receiving body 4 to rotate through the slot, and finally the cup receiving body 4 drives the hub 1 to rotate through the threaded connection. The two bearing bodies 3 radially limit the cup receiving body 4, ensuring that the hub 1 remains stable when rotating at high speed or vibrating, avoiding the shaking problem of the traditional single bearing structure, and realizing efficient and reliable power transmission.

[0018] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0019] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A novel double-bearing receiving cup, comprising a hub (1), a steering cup (2), a receiving cup body (4), a dog bone (5), and a crown tooth (6), characterized in that: The steering cup (2) is provided with bearing bodies (3) on both the front and back sides. The inner rings of the two bearing bodies (3) are interference-fitted with the outer wall of the cup body (4), and the outer rings of the two bearing bodies (3) are interference-fitted with the bearing mounting holes on the front and back sides of the steering cup (2).

2. The novel double-bearing cup according to claim 1, characterized in that: The hub (1) is fixedly connected to the cup body (4) by screws.

3. The novel double-bearing cup according to claim 1, characterized in that: The circumferential groove of the crown tooth (6) engages with the protrusion at one end of the dog bone (5), and the protrusion at the other end of the dog bone (5) engages with the groove of the receiving cup body (4).

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