Hub motor with novel support assembly structure

Abstract

The utility model discloses a hub motor with a novel support assembly structure. The hub motor comprises a shell, a stator is arranged in the shell, a support and an outer rotor are arranged on the inner side and the outer side of the stator respectively, a rotating shaft is arranged in the support, a driving end bearing and a non-driving end bearing are arranged at the upper end and the lower end of the support respectively, and a plurality of inverted buckles are arranged at the end, close to the non-driving end bearing, of the support. The beneficial effects of the utility model are that the back-off support structure and the stator are locked and buckled, the processes of glue material and support outer ring gluing and standing solidification are replaced, the assembly time is saved, the structure is simple, the assembly is convenient, and the enterprise cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub motors, in particular to a wheel hub motor with a novel bracket assembly structure. Background Art

[0002] The hub motor technology is also known as in-wheel motor technology. Its biggest feature is that the power, transmission and braking devices are integrated into the wheel hub, thus greatly simplifying the mechanical part of the electric vehicle.

[0003] The existing drive wheel hub motor structure has a high difficulty in bracket processing and a complicated assembly process during the assembly process. Glue is applied to the inner hole of the bracket, and the drive end bearing is first slid into the bracket. After standing still for the glue to be fixed, glue is applied to the inside of the bracket again and the non-drive end bearing is slid into the bracket. Glue is then applied to the outer ring of the bracket and installed into the inner ring of the stator. After standing still for the glue to solidify, the next step of assembly is carried out. This assembly method has high requirements on parts, high dependence on glue, and many assembly processes. Since each part needs to stand still for the glue to solidify, the production cycle is long, resulting in low production line efficiency and low production capacity. Utility Model Content

[0004] The purpose of the utility model is to provide a hub motor with a novel bracket assembly structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a hub motor with a novel bracket assembly structure, comprising a shell, a stator is arranged in the shell, a bracket and an outer rotor are arranged on the inner and outer sides of the stator respectively, a rotating shaft is arranged in the bracket, a driving end bearing and a non-driving end bearing are arranged on the upper and lower ends of the bracket respectively, and a plurality of undercuts are arranged on one end of the bracket close to the non-driving end bearing.

[0007] Furthermore, the shell and the bracket are sealed and connected via an oil seal, and an end cover is also provided in the shell, and the end cover is sleeved on the bracket.

[0008] Furthermore, the bracket is made of PPS material, and the bracket is connected to the driving end bearing and the non-driving end bearing by clearance fit.

[0009] Furthermore, the driving end bearing and the non-driving end bearing are respectively sleeved on the upper and lower ends of the rotating shaft, and structural adhesive is coated between the outer rings of the driving end bearing and the non-driving end bearing and the inner ring of the bracket.

[0010] Furthermore, the stator is connected to the bracket by interference fit, and the stator core is fixedly connected to the undercut lock at a locking position.

[0011] Furthermore, reinforcing ribs are provided between the plurality of undercuts and the bracket, and the undercuts, the reinforcing ribs and the bracket are an integrally formed structure.

[0012] Beneficial effects: A hub motor with a new bracket assembly structure adopts an inverted bracket structure and a stator locking buckle, replacing the glue material and the process of coating the outer ring of the bracket with glue and standing to cure, saving assembly time, simple structure, convenient assembly, and saving enterprise costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the support structure of the utility model.

[0016] Reference numerals

[0017] 1-housing, 2-stator, 3-bracket, 4-outer rotor, 5-rotating shaft, 6-drive end bearing, 7-non-drive end bearing, 8-undercut, 9-oil seal, 10-end cover, 11-reinforcement rib. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] Example

[0020] like Figure 1-3 As shown, a hub motor with a novel bracket assembly structure includes a shell 1, a stator 2 is arranged in the shell 1, a bracket 3 and an outer rotor 4 are respectively arranged on the inner and outer sides of the stator 2, a rotating shaft 5 is arranged in the bracket 3, a driving end bearing 6 and a non-driving end bearing 7 are respectively arranged at the upper and lower ends of the bracket 3, and a plurality of undercuts 8 are arranged at one end of the bracket 3 close to the non-driving end bearing 7.

[0021] The shell 1 and the bracket 3 are sealed and connected via an oil seal 9 . An end cover 10 is also provided in the shell 1 . The end cover 10 is sleeved on the bracket 3 . The shell 1 and the end cover 10 are sealed and connected via the oil seal 9 .

[0022] The bracket 3 is made of PPS material instead of aluminum alloy, which reduces processing costs and mold costs. The bracket 3 is connected with the drive end bearing 6 and the non-drive end bearing 7 by clearance fit. The drive end bearing 6 and the non-drive end bearing 7 are respectively sleeved on the upper and lower ends of the rotating shaft 5. Structural glue is applied between the outer rings of the drive end bearing 6 and the non-drive end bearing 7 and the inner ring of the bracket 3. The drive end bearing 6 and the non-drive end bearing 7 are assembled simultaneously with pre-pressing tooling, which simplifies the assembly process and saves assembly time. The outer rings of the drive end bearing 6 and the non-drive end bearing 7 are bonded to the bracket 3 with the aid of structural glue to enhance the structural stability.

[0023] The stator 2 is connected to the bracket 3 by interference fit, and the stator 2 core is locked and fixedly connected with the undercut 8 at the locking position. A reinforcing rib 11 is provided between the multiple undercuts 8 and the bracket 3. The reinforcing rib 11 strengthens the structure of the bracket 3 and increases the connection stability. The undercut 8, the reinforcing rib 11 and the bracket 3 are an integrally formed structure. The bracket 3 is fixed by locking it into the stator 1 core through the undercut 8, replacing the structural glue, saving the glue material and the process of coating the outer ring of the bracket with glue and standing it to solidify.

[0024] In the utility model, the bracket 3 is made of PPS plastic material and is locked into the stator 1 core through the undercut 8 to fix the structure, which saves mold costs while reducing machining costs. The locking structure of the undercut 8 is simple, which reduces the use of glue and further reduces the production cost of the motor. The drive end bearing 6 and the non-drive end bearing 7 are assembled simultaneously on both sides of the pre-pressing tooling, which shortens the production cycle and improves production capacity.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A hub motor with a novel bracket assembly structure, comprising a housing (1), characterized in that: A stator (2) is arranged in the housing (1), a bracket (3) and an outer rotor (4) are arranged on the inner and outer sides of the stator (2), a rotating shaft (5) is arranged in the bracket (3), a driving end bearing (6) and a non-driving end bearing (7) are arranged at the upper and lower ends of the bracket (3), and a plurality of undercuts (8) are arranged at one end of the bracket (3) close to the non-driving end bearing (7).

2. The hub motor of the novel bracket assembly structure according to claim 1 is characterized in that: The housing (1) and the bracket (3) are sealed and connected via an oil seal (9). An end cover (10) is also provided in the housing (1), and the end cover (10) is sleeved on the bracket (3).

3. The hub motor of the novel bracket assembly structure according to claim 1 is characterized in that: The bracket (3) is made of PPS material, and the bracket (3) is connected to the drive end bearing (6) and the non-drive end bearing (7) by clearance fit.

4. The hub motor of the novel bracket assembly structure according to claim 1 is characterized in that: The driving end bearing (6) and the non-driving end bearing (7) are respectively sleeved on the upper and lower ends of the rotating shaft (5), and structural adhesive is applied between the outer rings of the driving end bearing (6) and the non-driving end bearing (7) and the inner ring of the bracket (3).

5. The hub motor of the novel bracket assembly structure according to claim 1 is characterized in that: The stator (2) is connected to the bracket (3) by interference fit, and the stator (2) core locking position is locked and fixedly connected to the undercut (8).

6. The hub motor of the novel bracket assembly structure according to claim 1 is characterized in that: A reinforcing rib (11) is provided between the plurality of undercuts (8) and the bracket (3); the undercuts (8), the reinforcing rib (11) and the bracket (3) are an integrally formed structure.

Images