A rotor assembly for a pedal motor

Abstract

The utility model discloses a rotor assembly for pedal motor, including rotor axle rod, bearing outer ring, bearing inner race and synchronous linkage mechanism, bearing outer ring is fixed at the inside axle of motor shell place, bearing inner race rotatoryly connected at the axle of bearing outer ring place, and bearing inner race is set in the rotor axle rod outside, and rotor axle rod is rotatoryly connected in the inside motor shell through bearing outer ring, bearing inner race.

Description

Technical Field

[0001] This utility model relates to a rotor assembly, specifically a rotor assembly for a pedal motor, and belongs to the field of rotor assembly technology. Background Technology

[0002] Car pedals are essential for getting in and out of high-chassis vehicles. Located on both sides of the car, they function similarly to steps. Traditional car pedals are fixed, non-adjustable, and aesthetically unappealing, so electric car pedals were developed. As the name suggests, electric pedals use an electric motor to drive the pedals, enabling them to extend and retract automatically. The motor rotor assembly is the core component of the electric motor, responsible for converting electrical energy into mechanical energy.

[0003] However, most existing rotor assemblies have various problems. For example, in the motor rotor disclosed in announcement number CN110535265B, although it has high production efficiency and reliability, in this technical solution and most current motor rotor assemblies, the rotor is generally connected to the motor housing through bearings. When the shaft mates with the inner ring of the bearing, it is mated through tight contact and friction. When the rotor speed exceeds the critical friction threshold, the shaft and the inner ring of the bearing may be relatively displaced, which leads to increased wear on the mating surface and even vibration and noise. This phenomenon is particularly prominent in pedal motors with frequent start and stop. At the same time, the relative displacement will destroy the coaxiality of the rotor, thereby affecting the uniformity of the motor air gap, causing a decrease in electromagnetic performance and energy efficiency loss. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a rotor assembly for a pedal motor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rotor assembly for a pedal motor includes a rotor shaft, an outer bearing ring, an inner bearing ring, and a synchronous linkage mechanism. The outer bearing ring is fixed at the center of the shaft inside the motor housing, and the inner bearing ring is rotatably connected to the center of the shaft of the outer bearing ring. The inner bearing ring is sleeved on the outside of the rotor shaft, and the rotor shaft is rotatably connected to the inside of the motor housing through the outer bearing ring and the inner bearing ring. The synchronous linkage mechanism is disposed between the rotor shaft and the inner ring of the bearing. The synchronous linkage mechanism includes a sliding groove, a snap-fit ​​groove, a limiting plate, and an adjusting unit. The rotor shaft has an internal mounting cavity. The sliding groove is disposed on the outer wall of the rotor shaft and communicates with the mounting cavity. The snap-fit ​​groove is disposed on the inner wall of the inner ring of the bearing. The limiting plate is slidably snapped into the sliding groove, and the limiting plate is partially abutted in the snap-fit ​​groove. The adjusting unit is disposed in the mounting cavity and connected to the limiting plate.

[0006] As a further embodiment of this utility model: the adjustment unit includes a fixed seat, a sliding seat, an active rod, and a driven rod. The fixed seat is fixed to one side of the mounting cavity, the sliding seat is slidably disposed in the mounting cavity, the active rod is rotatably connected between the limiting plate and the fixed seat, and the driven rod is rotatably connected between the limiting plate and the sliding seat.

[0007] As a further improvement of this utility model: a spring is provided on the other side of the mounting cavity, and one end of the spring abuts against the sliding seat.

[0008] As a further embodiment of this utility model: the adjustment unit further includes an adjustment hole and an adjustment rod. The adjustment hole is located at the center of one end of the rotor shaft and communicates with the mounting cavity. The adjustment rod is slidably connected in the adjustment hole, and one end of the adjustment rod slides through the fixed seat and is fixed to the sliding seat.

[0009] As a further improvement of this utility model: a passive rod is rotatably connected between the limiting plate and the sliding seat, and the passive rod is arranged parallel to the driven rod.

[0010] As a further improvement of this utility model, the integral structure composed of the sliding groove, the snap-fit ​​groove and the limiting plate is provided with multiple sets at equal intervals.

[0011] The beneficial effects of this utility model are: In this invention, a synchronous linkage mechanism is set up, and the sliding seat is pushed to slide by the elastic force of the spring. Then, the limiting plate is driven to slide in the sliding groove by the active rod and the driven rod, and it abuts against the locking groove, thus forming a mechanical interlock with the inner ring of the bearing. This completely eliminates the risk of relative slippage between the rotor shaft and the inner ring of the bearing under high-speed conditions. Its torque transmission capacity can reach many times that of traditional friction connection. At the same time, the locking groove limiting structure reduces the coaxiality error of the rotor and significantly reduces the electromagnetic loss caused by eccentricity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged structural diagram of the rotor shaft portion of this utility model; Figure 3This is a schematic diagram of the synchronous linkage mechanism of this utility model; Figure 4 This is a schematic diagram of the bearing inner ring structure of this utility model.

[0013] In the diagram: 1. Rotor shaft, 2. Bearing outer ring, 3. Bearing inner ring, 4. Synchronous linkage mechanism, 41. Slide groove, 42. Snap-fit ​​groove, 43. Limiting plate, 44. Fixed seat, 45. Sliding seat, 46. Driving rod, 47. Driven rod, 48. Spring, 49. Adjusting hole, 410. Adjusting rod, 411. Passive rod. Detailed Implementation

[0014] 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. Example 1

[0015] like Figures 1 to 4 As shown, a rotor assembly for a pedal motor includes a rotor shaft 1, an outer bearing ring 2, an inner bearing ring 3, and a synchronous linkage mechanism 4. The outer bearing ring 2 is fixed at the center of the shaft inside the motor housing, and the inner bearing ring 3 is rotatably connected to the center of the shaft of the outer bearing ring 2. The inner bearing ring 3 is sleeved on the outside of the rotor shaft 1, and the rotor shaft 1 is rotatably connected to the inside of the motor housing through the outer bearing ring 2 and the inner bearing ring 3. The synchronous linkage mechanism 4 is set between the rotor shaft 1 and the bearing inner ring 3. The synchronous linkage mechanism 4 includes a sliding groove 41, a snap-fit ​​groove 42, a limiting plate 43 and an adjustment unit. The rotor shaft 1 has an internal mounting cavity. The sliding groove 41 is set on the outer wall of the rotor shaft 1 and communicates with the mounting cavity. The snap-fit ​​groove 42 is set on the inner wall of the bearing inner ring 3. The limiting plate 43 is slidably snapped into the sliding groove 41, and the limiting plate 43 is partially abutted in the snap-fit ​​groove 42. The adjustment unit is set in the mounting cavity and connected to the limiting plate 43. The adjustment unit includes a fixed seat 44, a sliding seat 45, a driving rod 46, and a driven rod 47. The fixed seat 44 is fixed on one side of the mounting cavity, the sliding seat 45 is slidably disposed in the mounting cavity, the driving rod 46 is rotatably connected between the limiting plate 43 and the fixed seat 44, and the driven rod 47 is rotatably connected between the limiting plate 43 and the sliding seat 45. A spring 48 is provided on the other side of the mounting cavity, and one end of the spring 48 abuts against the sliding seat 45. The adjustment unit also includes an adjustment hole 49 and an adjustment rod 410. The adjustment hole 49 is located at the center of one end of the rotor shaft 1 and communicates with the mounting cavity. The adjustment rod 410 is slidably connected in the adjustment hole 49, and one end of the adjustment rod 410 slides through the fixed seat 44 and is fixed to the sliding seat 45.

[0016] In this utility model, by setting a synchronous linkage mechanism 4, the sliding seat 45 is pushed to slide by the elastic force of the spring 48, and then the limiting plate 43 is driven to slide in the sliding groove 41 by the active rod 46 and the driven rod 47, and abuts against the locking groove 42, thereby forming a mechanical interlock with the bearing inner ring 3. This completely eliminates the risk of relative slippage between the rotor shaft and the bearing inner ring 3 under high-speed conditions. Its torque transmission capacity can reach many times that of traditional friction connection. At the same time, the locking groove limiting structure reduces the rotor coaxiality error and significantly reduces the electromagnetic loss caused by eccentricity. Example 2

[0017] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes: A passive rod 411 is rotatably connected between the limiting plate 43 and the sliding seat 45. The passive rod 411 is arranged parallel to the driven rod 47. The parallel arrangement of the passive rod 411 and the driven rod 47 prevents the limiting plate 43 from tilting when sliding in the slide groove 41.

[0018] The overall structure composed of the sliding groove 41, the snap-fit ​​groove 42 and the limiting plate 43 is arranged in multiple sets at equal intervals. Through multiple sets of structures, the rotor shaft 1 and the inner ring of the bearing 3 can be locked evenly to avoid uneven force.

[0019] When using this rotor assembly, first push the adjusting rod 410 through the adjusting hole 49 to move it, which in turn drives the sliding seat 45 to slide, so that the limiting plate 43 moves into the sliding groove 41. Then, the bearing inner ring 3 is fitted onto the rotor shaft 1 and moved to the limiting plate 43. Then, release the adjusting rod 410. At this time, under the elastic force of the spring 48, the sliding seat 45 is pushed to slide, which in turn drives the limiting plate 43 to slide in the sliding groove 41 through the driving rod 46 and the driven rod 47, so that it abuts against the locking groove 42.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotor assembly for a pedal motor, comprising a rotor shaft (1), an outer bearing ring (2), an inner bearing ring (3), and a synchronous linkage mechanism (4), characterized in that, The outer ring (2) of the bearing is fixed at the center of the shaft inside the motor housing, and the inner ring (3) of the bearing is rotatably connected to the center of the shaft of the outer ring (2). The inner ring (3) of the bearing is sleeved on the outside of the rotor shaft (1). The rotor shaft (1) is rotatably connected to the inside of the motor housing through the outer ring (2) and the inner ring (3). The synchronous linkage mechanism (4) is disposed between the rotor shaft (1) and the bearing inner ring (3). The synchronous linkage mechanism (4) includes a sliding groove (41), a snap-fit ​​groove (42), a limiting plate (43), and an adjustment unit. The rotor shaft (1) has an internal mounting cavity. The sliding groove (41) is disposed on the outer wall of the rotor shaft (1) and communicates with the mounting cavity. The snap-fit ​​groove (42) is disposed on the inner wall of the bearing inner ring (3). The limiting plate (43) is slidably snapped into the sliding groove (41), and the limiting plate (43) is partially abutted in the snap-fit ​​groove (42). The adjustment unit is disposed in the mounting cavity and connected to the limiting plate (43).

2. A rotor assembly for a pedal motor according to claim 1, characterized in that: The adjustment unit includes a fixed seat (44), a sliding seat (45), an active rod (46), and a driven rod (47). The fixed seat (44) is fixed on one side of the mounting cavity, the sliding seat (45) is slidably disposed in the mounting cavity, the active rod (46) is rotatably connected between the limiting plate (43) and the fixed seat (44), and the driven rod (47) is rotatably connected between the limiting plate (43) and the sliding seat (45).

3. A rotor assembly for a pedal motor according to claim 2, characterized in that: A spring (48) is provided on the other side of the mounting cavity, and one end of the spring (48) abuts against the sliding seat (45).

4. A rotor assembly for a pedal motor according to claim 2, characterized in that: The adjustment unit also includes an adjustment hole (49) and an adjustment rod (410). The adjustment hole (49) is located at the center of one end of the rotor shaft (1) and communicates with the mounting cavity. The adjustment rod (410) is slidably connected in the adjustment hole (49), and one end of the adjustment rod (410) slides through the fixed seat (44) and is fixed with the sliding seat (45).

5. A rotor assembly for a pedal motor according to claim 2, characterized in that: A passive rod (411) is rotatably connected between the limiting plate (43) and the sliding seat (45), and the passive rod (411) is arranged parallel to the driven rod (47).

6. A rotor assembly for a pedal motor according to claim 1, characterized in that: The overall structure composed of the slide groove (41), the snap-fit ​​groove (42) and the limiting plate (43) is provided in multiple sets at equal intervals.

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