Torque sensor hub motor

Abstract

The utility model discloses a torque sensor hub motor, which comprises a shell, an end cover, a shaft, a torque sensor shell and a tower footing, the end cover is fixedly arranged at the left end of the shell, the shaft is rotatably connected with the shell through a first ball bearing, the torque sensor shell is fixedly connected with the tower footing, and the tower footing is fixedly connected with the shaft. A flange and a positioning protrusion are integrally formed on the torque sensor shell, and a positioning groove matched with the flange is formed in the end cover. According to the installation structure, the screw rod and the lock nut penetrate through the first through hole and the second through hole to connect and fix the torque sensor shell and the flange, the screw rod and the lock nut are independently replaced, the maintenance cost can be reduced, and through the pre-positioning effect that the flange is matched with the positioning groove of the end cover, the torque sensor shell is fixed. The coaxiality after the torque sensor shell and the end cover are assembled can be improved, and follow-up ball bearing assembling work is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of hub motor technology, and in particular relates to a torque sensor hub motor. Background Technology

[0002] In-wheel motors, also known as wheel-mounted motors, integrate power, transmission, and braking systems within the wheel hub, significantly simplifying the mechanical components of electric vehicles. Currently, torque sensors and end caps are fixed using screw connections, which lack positioning capabilities during installation. This can easily lead to misalignment between the torque sensor and the end cap. Furthermore, after repeated maintenance and disassembly, wear can occur on the external threads of the torque sensor and the internal threads of the end cap, necessitating the replacement of both components entirely. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a torque sensor hub motor with high assembly positioning accuracy and low maintenance cost.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a torque sensor hub motor, comprising a housing, an end cover, a shaft, a torque sensor housing, and a tower base. The end cover is fixedly installed on the left end of the housing. The shaft is rotatably connected to the housing via a first ball bearing. The torque sensor housing is fixedly connected to the tower base. The torque sensor housing is integrally formed with a flange and a positioning protrusion. The end cover is provided with a positioning groove that mates with the flange. The flange and the positioning groove are provided with a first through hole and a second through hole arranged in a circular array. The torque sensor housing is fixedly connected to the end cover via the flange. The tower base is also rotatably connected to the shaft via a second ball bearing. The torque sensor housing is also rotatably connected to the shaft via a third ball bearing. The shaft is provided with a cable outlet hole.

[0005] Furthermore, the shaft is integrally formed and equipped with a limit stop ring, and the torque sensor housing abuts against the limit stop ring.

[0006] Furthermore, the limiting stop ring is provided with a wire outlet groove.

[0007] Furthermore, the cable outlet groove is connected to the cable outlet hole.

[0008] Furthermore, the outer edges of both the left and right end faces of the flange are configured with beveled structures.

[0009] Compared with the prior art, the advantages of this utility model are: the installation structure connects and fixes the torque sensor housing to the flange by passing the screw and lock nut through the first through hole and the second through hole. The screw and lock nut can be replaced separately, which can reduce maintenance costs. The pre-positioning effect of the flange and the end cover positioning groove can improve the coaxiality of the torque sensor housing and the end cover after assembly, which facilitates the subsequent ball bearing assembly operation. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 This is the front view of this utility model.

[0012] Figure 2 yes Figure 1 A sectional view along the AA direction.

[0013] Figure 3 This is a schematic diagram of the installation structure of the torque sensor housing and end cap. Detailed Implementation

[0014] The present invention will now be described in detail with reference to specific embodiments:

[0015] like Figures 1 to 3 The torque sensor hub motor shown includes a housing 1, an end cap 2, a shaft 3, a torque sensor housing 4, and a tower base 5. The end cap 2 is fixedly installed on the left end of the housing 1. The shaft 3 is rotatably connected to the housing 1 via a first ball bearing 30. The torque sensor housing 4 is fixedly connected to the tower base 5. The torque sensor housing 4 is integrally formed with a flange 40 and a positioning protrusion. The end cap 2 is provided with a positioning groove 21 that mates with the flange 40. The flange 40 and the positioning groove 21 are arranged in a ring array with a first through hole 42 and a second through hole 22. The torque sensor housing 4 is fixedly connected to the end cap 2 via the flange 40, that is, the torque sensor housing 4 is connected and fixed to the flange 40 by a screw and a lock nut passing through the first through hole 42 and the second through hole 22. The tower base 5 is also rotatably connected to the shaft 3 via a second ball bearing 50. The torque sensor housing 4 is also rotatably connected to the shaft 3 via a third ball bearing 40. The shaft 3 is provided with a cable outlet hole 32.

[0016] The shaft 3 is integrally formed and has a limit stop ring 31. The torque sensor housing 4 abuts against the limit stop ring 31 to ensure the accuracy of the installation position of the torque sensor housing 4 and the shaft 3.

[0017] The limiting stop ring 31 is provided with a wire outlet groove 310, through which the wire harness of the torque sensor housing 4 passes.

[0018] The cable outlet groove 310 is connected to the cable outlet hole 32, and the cable outlet groove 310 and the cable outlet hole 32 are located in the same cross-sectional plane to prevent the wire harness of the torque sensor housing 4 from getting tangled on the shaft 3.

[0019] The outer edges of the left and right end faces of the flange 40 are both set with beveled structures, which serve as guides when the flange 40 and the positioning groove 21 of the end cover 2 are combined.

[0020] The torque sensor hub motor receives the pedaling force signal from the torque sensor housing 4 and the pedaling force signal from the hub base 5 based on the pedaling force during riding, and sends it back to the Hall sensor of the motor. The Hall sensor sends a signal to the controller, and the controller outputs the corresponding voltage and current, so that the motor outputs a speed that matches the pedaling force.

Claims

1. A torque sensor hub motor, characterized in that: The device includes a housing (1), an end cap (2), a shaft (3), a torque sensor housing (4), and a tower base (5). The end cap (2) is fixedly installed on the left end of the housing (1). The shaft (3) is rotatably connected to the housing (1) via a first ball bearing (30). The torque sensor housing (4) is fixedly connected to the tower base (5). The torque sensor housing (4) is integrally formed with a flange (40) and a positioning protrusion. The end cap (2) is provided with a positioning groove that mates with the flange (40). (21) The flange (40) and the positioning groove (21) are arranged in a ring array with a first through hole (42) and a second through hole (22). The torque sensor housing (4) is fixedly connected to the end cover (2) through the flange (40). The tower base (5) is also rotatably connected to the shaft (3) through the second ball bearing (50). The torque sensor housing (4) is also rotatably connected to the shaft (3) through the third ball bearing (401). The shaft (3) is provided with a wire outlet hole (32).

2. The torque sensor hub motor according to claim 1, characterized in that: The shaft (3) is integrally formed and has a limit stop ring (31), and the torque sensor housing (4) abuts against the limit stop ring (31).

3. The torque sensor hub motor according to claim 2, characterized in that: The limiting stop ring (31) is provided with a cable outlet groove (310).

4. The torque sensor hub motor according to claim 3, characterized in that: The cable outlet groove (310) is connected to the cable outlet hole (32).

5. The torque sensor hub motor according to claim 1, characterized in that: The outer edges of the left and right end faces of the flange (40) are both set with beveled structures.

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