Inner rotor hub motor of speed sensor

Abstract

The utility model discloses a speed sensor inner rotor wheel hub motor, which comprises a shell, an end cover, a large shaft, a wire outlet shaft, a tower footing, a magnetic ring, a bracket and a machine core, the end cover is fixedly installed on the shell in a screw joint mode, the wire outlet shaft is rotatably connected with the shell through a first ball bearing, the large shaft is rotatably connected with the end cover through a second ball bearing, and the tower footing is fixedly installed on the end cover. The tower footing is fixedly connected with the end cover, and the tower footing is further rotationally connected with the large shaft through a third ball bearing. The controller is integrated in the shell of the hub motor and installed on the machine core, an external controller does not need to be additionally installed on a frame, the space of the frame is greatly saved, the length and the number of wire harnesses are reduced, and wire harness wiring is simple and rapid.

Description

Technical Field

[0001] This utility model belongs to the field of hub motor technology, and in particular relates to a hub motor with an internal rotor and a speed sensor. 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. Existing controllers are external to the in-wheel motor housing, resulting in space requirements and excessively long wiring harnesses. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a rotor hub motor with an integrated controller inside the speed sensor inside the housing.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a speed sensor internal rotor hub motor, comprising a housing, an end cover, a main shaft, a lead-out shaft, a tower base, a magnetic ring, a bracket, and a core mechanism. The end cover is screwed and fixedly installed on the housing. The lead-out shaft is rotatably connected to the housing via a first ball bearing. The main shaft is rotatably connected to the end cover via a second ball bearing. The tower base is fixedly connected to the end cover and is also rotatably connected to the main shaft via a third ball bearing. The core mechanism is fixedly installed on the lead-out shaft. The main shaft is provided with a speed sensor mounting slot, in which a speed sensor is installed. The magnetic ring is fixedly installed on the tower base. The main shaft is also provided with a wire-passing hole communicating with the speed sensor mounting slot. A groove that mates with the speed sensor is fixedly installed on the outer end of the main shaft. The bracket is fixedly connected to the support frame of the core mechanism via a screw. The bracket has a U-shaped groove, which is snapped onto the lead-out shaft. The top surface of the bracket is configured as a groove structure, in which a controller is installed.

[0005] Preferably, the bracket has nuts fixedly arranged in a circular array on its bottom surface, and the movement has positioning grooves arranged in a circular array to cooperate with the nuts. The nuts are embedded in the positioning grooves, and the screw is a T-shaped screw. The screw and the nut are screwed together to lock and fix the bracket and the movement.

[0006] Preferably, there is a gap of 20-30mm between the bottom surface of the bracket and the top surface of the movement.

[0007] Preferably, the inlet end of the U-shaped groove is configured as an arc surface structure.

[0008] Compared with the prior art, the advantages of this utility model are: the controller is integrated inside the housing of the hub motor and installed on the core, eliminating the need to install an external controller on the frame, greatly saving frame space, simplifying the length and quantity of wiring harnesses, and making wiring harness routing simple and quick. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] Figure 1 This is the front view of this utility model.

[0011] Figure 2 yes Figure 1 A sectional view along the AA direction.

[0012] Figure 3 This is an assembly diagram of the bracket and movement.

[0013] Figure 4 It is a 3D view of the main axis. Detailed Implementation

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

[0015] like Figures 1 to 4 The illustrated speed sensor internal rotor hub motor includes a housing 1, an end cover 2, a main shaft 3, a lead-out shaft 4, a tower base 5, a magnetic ring 51, a bracket 6, and a core 7. The end cover 2 is screwed and fixedly mounted on the housing 1. The lead-out shaft 4 is rotatably connected to the housing 1 via a first ball bearing 41. The main shaft 3 is rotatably connected to the end cover 2 via a second ball bearing. The tower base 5 is fixedly connected to the end cover 2 and is also rotatably connected to the main shaft 3 via a third ball bearing. The core 7 is fixedly mounted on the lead-out shaft 4. The main shaft 3 has a speed sensor mounting slot 31. A speed sensor is installed in the mounting slot 31. The magnetic ring 51 is fixedly installed in the tower base 5. The main shaft 3 is also provided with a wire hole 32 that communicates with the speed sensor mounting slot 31. A groove that cooperates with the speed sensor is fixedly installed on the outer end of the main shaft 3. The bracket 6 is fixedly connected to the support frame of the mechanism 7 by the screw 8. The bracket 6 has a U-shaped groove 61, which is snapped onto the wire output shaft 4. The top surface of the bracket 6 is set as a groove structure. The controller 10 is installed in the groove structure. The controller 10 can be protected by injecting potting compound into the groove structure.

[0016] The bracket 6 has nuts 9 fixedly arranged in a ring array on its bottom surface. The movement 7 has positioning grooves 91 arranged in a ring array to cooperate with the nuts 9. The nuts 9 are embedded in the positioning grooves 91. The screw 8 is a T-shaped screw. The screw 8 and the nuts 9 are screwed together to lock and fix the bracket 6 and the movement 7.

[0017] There is a 23.6mm gap between the bottom surface of the bracket 6 and the top surface of the mechanism 7 to facilitate heat dissipation of the controller 10 of the bracket 6.

[0018] The inlet end of the U-shaped groove 61 is designed with an arc surface structure to provide guidance for the U-shaped groove 61 to be snapped onto the outlet shaft 4.

[0019] The movement 7 drives the outer shell 1 and end cover 2 to rotate synchronously. The controller 10 is integrated inside the outer shell 1 and installed on the movement 7, so there is no need to install an external controller.

[0020] The speed sensor is integrated on the hub motor shaft 3. When riding, the magnetic ring 51 of the base 5 rotates, the speed sensor senses the magnetic field signal and feeds it back to the controller. The controller outputs the corresponding voltage and current, so that the motor outputs a speed that matches the riding speed.

Claims

1. An in-wheel motor for a speed sensor, characterized by: The utility model relates to a kind of speed sensor installation structure, including shell (1), end cover (2), big axle (3), outgoing line shaft (4), tower base (5), magnetic ring (51), bracket (6) and machine core (7), the end cover (2) is fixedly installed by screwing on shell (1), the outgoing line shaft (4) is rotatably connected with shell (1) by first ball bearing (41), the big axle (3) is rotatably linked with end cover (2) by second ball bearing, the tower base (5) is fixedly connected with end cover (2), the tower base (5) is also rotatably connected with big axle (3) by third ball bearing, the machine core (7) is fixedly installed on outgoing line shaft (4), speed sensor mounting groove (31) is provided on the big axle (3), speed sensor is installed in speed sensor mounting groove (31), the magnetic ring (51) is fixedly installed in tower base (5), the big axle (3) is also provided with the through hole (32) of wire that speed sensor mounting groove (31) is connected, the big axle (3) outer end is fixedly installed with the recess that is cooperated with speed sensor, the bracket (6) is fixedly connected with the bearing frame of machine core (7) by screw rod (8), the bracket (6) has U type slot (61) on it, the U type slot (61) is buckled and installed on outgoing line shaft (4), the top surface of bracket (6) is recess structure, controller (10) is installed in the recess structure.

2. The in-wheel motor according to claim 1, characterized by: The bottom surface of bracket (6) is annular array fixedly provided with nut (9), the machine core (7) is annular array provided with the positioning groove (91) that is cooperated with nut (9), the nut (9) is embedded in positioning groove (91), the screw rod (8) is T type screw rod, the screw rod (8) and nut (9) screw connection lock tightly fixed bracket (6) with machine core (7).

3. The in-wheel motor of claim 2, wherein: There is 20-30mm gap between the bottom surface of bracket (6) and the top surface of machine core (7).

4. The in-wheel motor of claim 1, wherein: The inlet end of U type slot (61) is set as circular arc surface structure.

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