Motor integrated with drum brake lock

Abstract

The utility model relates to a motor integrated with a drum brake lock, which comprises a motor shaft, a stator, a rotor, a hub, a motor end cover, a brake cover, a lock brake and a lock, the stator is sleeved on the motor shaft, the rotor is connected with the hub, the rotor is positioned on the outer side of the stator, and the stator and the rotor are used for cooperatively controlling the hub to rotate along the motor shaft; the brake cover is arranged at one end of the hub, the motor end cover is arranged between the brake cover and the hub, a brake cavity is formed between the motor end cover and the brake cover, the lock brake is arranged in the brake cavity and connected with the brake cover, the lock is arranged in the brake cavity and fixedly connected with the motor shaft, and the lock is used for being clamped with the lock brake to limit rotation of the hub. In order to solve the problem of difficulty in maintenance, the motor area and the brake area are separated through the motor end cover to form different functional module areas, so that when the lock needs to be overhauled and replaced, the lock can be maintained only by detaching the brake cover, and the lock does not need to be detached together with a vehicle motor.

Description

Technical Field

[0001] The utility model relates to the field of motors, and more specifically, to a motor with an integrated drum brake lock. Background Art

[0002] In-wheel motor technology is a motor technology that integrates the motor into the wheel hub. Its biggest feature is that the motor, gears and braking system are integrated inside the wheel hub, which greatly simplifies the mechanical part of the vehicle.

[0003] In the prior art, a wheel hub lock is usually used to realize the locking control of the wheel hub, and in the design process, the wheel hub lock is often installed inside the wheel hub, such as Figure 1 As shown, the disadvantages of this design are: 1. Since the control signal line of the lock needs to be connected to the motor stator assembly and then come out together through the motor line, welding and binding are required, and the process is complicated; 2. After-sales service is difficult. When the wheel hub lock fails and needs to be repaired and replaced, the motor needs to be disassembled, and the connecting line (control signal line) between the wheel hub lock and the stator needs to be removed. The disassembly and assembly process is complicated and very troublesome, which is time-consuming and laborious; 3. When the lock fails, such as the control line short-circuited, it will affect the normal operation of the motor.

[0004] Therefore, how to facilitate the disassembly and maintenance of the lock is exactly the technical problem to be solved by this application. Utility Model Content

[0005] In view of the shortcomings of the existing technology, a motor with an integrated drum brake lock is proposed. Braking is performed by means of a drum brake lock, and the brake area and the vehicle motor area are separated by a motor end cover to facilitate maintenance and avoid mutual influence between the brake system and the vehicle motor system.

[0006] A motor with an integrated drum brake lock comprises a motor shaft, a stator, a rotor and a wheel hub, wherein the stator is sleeved on the motor shaft, the rotor is connected to the wheel hub, the rotor is located outside the stator, the stator and the rotor are used to cooperate to control the wheel hub to rotate along the motor shaft, and further comprises a motor end cover, a brake cover, a lock and a lock;

[0007] The brake cover is arranged at one end of the wheel hub, the motor end cover is arranged between the brake cover and the wheel hub, a brake cavity is formed between the motor end cover and the brake cover, the lock gate is arranged in the brake cavity and connected to the brake cover, the lock device is arranged in the brake cavity and fixedly connected to the motor shaft, and the lock device is used to engage with the lock gate to limit the rotation of the wheel hub.

[0008] In summary, the above technical scheme has the following beneficial effects: the motor end cover and the wheel hub of the present application are connected by threads, the brake cover and the wheel hub are connected by bolts, the lock gate is fixed in the brake cover by die casting, the brake cover and the wheel hub rotate together, and the lock is fixed to the motor shaft and does not rotate. When braking is required, the lock and the lock gate are engaged to limit the rotation of the wheel hub. When the lock and the lock gate are separated, the vehicle motor can drive the wheel hub to rotate. The lock, stator and rotor of the existing design are designed in one space, and the signal line of the disc brake needs to be connected to the vehicle motor, which makes maintenance inconvenient. In order to solve the problem of maintenance difficulties, the present application separates the motor area and the brake area by the motor end cover to form different functional module areas. In this way, when the lock needs to be repaired and replaced, the lock can be repaired by removing the brake cover alone, without removing it together with the vehicle motor. In addition, the lock adopts the drum brake lock method for braking, which does not require the signal line to be connected to the vehicle motor. The installation process is simple, and the motor operation will not be affected when the lock line is short-circuited. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the cross section of an existing motor;

[0010] Figure 2 It is a cross-sectional schematic diagram of a motor with an integrated drum brake lock;

[0011] Figure 3 A schematic diagram of a lock having an integrated drum brake lock and a motor;

[0012] Figure 4 A schematic diagram of a wire outlet barrel of a motor with an integrated drum brake lock;

[0013] Figure 5 A schematic diagram of a brake cover of a motor with an integrated drum brake lock;

[0014] Figure 6 A schematic diagram of a motor end cover of a motor with an integrated drum brake lock.

[0015] Figure numerals: 10, motor shaft; 11, cable channel; 12, cable line; 20, stator; 30, rotor; 40, wheel hub; 50, motor end cover; 51, magnetic steel slot; 60, brake cover; 61, cover; 70, lock; 80, lock; 81, fixing seat; 811, spline; 812, outlet barrel; 82, control part; 821, signal line; 83, control block; 84, lock; 90, reducer. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0017] like Figure 1-Figure 2 As shown, a motor with an integrated drum brake lock includes a motor shaft 10, a stator 20, a rotor 30 and a wheel hub 40, the stator 20 is sleeved on the motor shaft 10, the rotor 30 is connected to the wheel hub 40, the rotor 30 is located on the outside of the stator 20, the stator 20 and the rotor 30 are used to cooperate to control the wheel hub 40 to rotate along the motor shaft 10, and also includes a motor end cover 50, a brake cover 60, a lock gate 70 and a lock 80; the brake cover 60 is arranged at one end of the wheel hub 40, the motor end cover 50 is arranged between the brake cover 60 and the wheel hub 40, a brake cavity is formed between the motor end cover 50 and the brake cover 60, the lock gate 70 is arranged in the brake cavity and connected to the brake cover 60, the lock 80 is arranged in the brake cavity and fixedly connected to the motor shaft 10, and the lock 80 is used to engage with the lock gate 70 to limit the rotation of the wheel hub 40. The motor end cover 50 and the wheel hub 40 of the present application are connected by threads, the brake cover 60 and the wheel hub 40 are connected by bolts, the lock gate 70 is fixed in the brake cover 60 by die-casting, the brake cover 60 and the wheel hub 40 rotate together, and the lock 80 is fixed to the motor shaft 10 and does not rotate. When braking is required, the lock 80 and the lock gate 70 are engaged to limit the rotation of the wheel hub 40. When the lock 80 and the lock gate 70 are separated, the vehicle motor can drive the wheel hub 40 to rotate. The existing lock 80, stator 20 and rotor 30 are designed in one space, and the disc brake signal line 821 needs to be connected to the vehicle motor, which makes maintenance inconvenient. In order to solve the problem of difficult maintenance, the present application separates the motor area and the brake area through the motor end cover 50 to form different functional module areas. In this way, when the lock 80 needs to be inspected and replaced, the lock 80 can be repaired by removing the brake cover 60, without removing it together with the vehicle motor. In addition, the lock 80 uses a drum brake lock for braking, and it does not need to connect the signal line 821 to the vehicle motor. The installation process is simple, and the motor operation will not be affected when the lock 80 line is short-circuited.

[0018] like Figure 3As shown, the lock 80 includes a fixed seat 81, a control member 82, a control block 83 and a lock 84. The fixed seat 81 is connected to the motor shaft 10 through a spline 811. The control member 82, the control block 83 and the lock 84 are arranged on the side of the fixed seat 81 facing the motor end cover 50. The control member 82 is connected to the control block 83, and the control block 83 is connected to the lock 84. The control member 82 controls the movement of the lock 84 through the control block 83, so that the lock 84 and the lock gate 70 are engaged or separated. The control member 82 is a control motor, and the control motor drives the control block 83 to rotate by rotating. Of course, in order to achieve a better braking effect, the lock 80 can be provided with multiple locks 84. In order to facilitate the control of the lock 84, it can be combined and controlled by elastic members, bearings and other components.

[0019] An oil seal is provided between the fixing seat 81 and the motor shaft 10. The oil seal is used to prevent lubricating oil from leaking.

[0020] like Figure 4 and Figure 5 As shown, the brake cover 60 is provided with a cover opening 61, and a wire outlet barrel 812 extends from the side of the fixed seat 81 facing the brake cover 60. The wire outlet barrel 812 is arranged at the cover opening 61 and is rotatably connected to the brake cover 60. The signal line 821 of the control member 82 extends to the outside through the wire outlet barrel 812. The cover opening 61 of the brake cover 60 allows the motor shaft 10 to extend, and also allows the wire outlet barrel 812 to extend. Because the wire outlet barrel 812 is connected to the brake cover 60 and is immovable, and the brake cover 60 is rotatable, a bearing needs to be provided at the cover opening 61 to allow the wire outlet barrel 812 to be rotatably connected to the brake cover 60. Specifically, the wire outlet barrel 812 includes an inner barrel and an outer barrel, and there are a plurality of wire passing holes between the inner barrel and the outer barrel. Any of the wire passing holes can allow the signal line 821 to extend. The control line is used to input signals and control the switch of the lock 80. At the same time, the wire passing holes can also dissipate heat for the brake chamber. The drum brake has a separate control motor, and its signal line 821 can extend from the outlet barrel 812 to the outside alone without passing through the vehicle motor. Therefore, a failure of the lock 80 will not affect the operation of the vehicle motor, and the assembly of the vehicle motor is also convenient.

[0021] The outlet barrel 812 is arranged at the cover opening 61 and is rotatably connected to the brake cover 60 through a bearing, and an oil seal is also arranged at the connection between the outlet barrel 812 and the brake cover 60. The oil seal is used to prevent lubricating oil from leaking.

[0022] The lock gate 70 is a plurality of lock teeth, which are arranged in a ring shape along the inner ring of the motor end cover 50, and a lock groove is provided between each lock tooth for the lock 80 to engage. The lock teeth are fixed in the motor end cover 50 by die casting.

[0023] like Figure 6As shown, a plurality of magnetic steel slots 51 for placing magnetic steel are arranged on the motor end cover 50. In addition to separating the brake cavity and the motor cavity, the motor end cover 50 can also be provided with magnetic steel so that the Hall sensor can detect the rotation speed of the rotor 30.

[0024] The motor end cover 50 and the wheel hub 40 are connected by threads. The motor end cover 50 and the wheel hub 40 can also be connected by bolts. Preferably, the motor end cover 50 and the wheel hub 40 are connected by threads. The threaded connection can facilitate the disassembly of the motor end cover 50, and can also be quickly and conveniently disassembled when the vehicle motor needs to be repaired. The motor end cover 50 needs to rotate with the wheel hub 40, so the motor end cover 50 and the motor shaft 10 need to be connected by bearings, and an oil seal is provided at the connection.

[0025] The motor shaft 10 is provided with a cable channel 11. The vehicle motor composed of the rotor 30 and the stator 20 extends with a cable 12, and the cable 12 extends to the outside through the cable channel 11. The cable 12 and the brake signal line 821 of the present application are extended to the outside separately, so that the vehicle motor and the lock 80 can be repaired separately during maintenance.

[0026] The motor 30 is also provided with a reducer 90, and the rotor 30 is connected to the wheel hub 40 via the reducer 90. The motor of the present application is mainly used for electric bicycles, and other parts for electric bicycles, such as a card fly, etc., can be arranged thereon. The specific parts are designed according to the actual situation, and are not described in detail because they are irrelevant to the innovative content of the present application.

[0027] The beneficial effects of the present application are: 1. The motor end cover 50 separates the motor area and the brake area to form different functional module areas, so that when the lock 80 needs to be inspected and replaced, the lock 80 can be repaired by removing only the brake cover 60, without the need to remove the vehicle motor together; 2. The lock 80 uses a drum brake lock for braking. Compared with a disc brake, it does not need to connect the signal line 821 to the vehicle motor, and the installation process is simple; 3. When the lock 80 circuit is short-circuited, it will not affect the operation of the motor.

[0028] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A motor with an integrated drum brake lock, comprising a motor shaft (10), a stator (20), a rotor (30) and a wheel hub (40), wherein the stator (20) is sleeved on the motor shaft (10), the rotor (30) is connected to the wheel hub (40), the rotor (30) is located outside the stator (20), and the stator (20) and the rotor (30) are used to cooperate to control the wheel hub (40) to rotate along the motor shaft (10), characterized in that: It also includes a motor end cover (50), a brake cover (60), a lock gate (70) and a lock (80); The brake cover (60) is arranged at one end of the wheel hub (40), the motor end cover (50) is arranged between the brake cover (60) and the wheel hub (40), a brake cavity is formed between the motor end cover (50) and the brake cover (60), the lock gate (70) is arranged in the brake cavity and connected to the brake cover (60), the lock (80) is arranged in the brake cavity and fixedly connected to the motor shaft (10), and the lock (80) is used to engage with the lock gate (70) to limit the rotation of the wheel hub (40).

2. The motor with integrated drum brake lock according to claim 1, characterized in that: The lock (80) comprises a fixing seat (81), a control member (82), a control block (83) and a lock member (84); the fixing seat (81) and the motor shaft (10) are connected via a spline (811); the control member (82), the control block (83) and the lock member (84) are arranged on a side of the fixing seat (81) facing the motor end cover (50); the control member (82) and the control block (83) are connected; the control block (83) and the lock member (84) are connected; the control member (82) controls the movement of the lock member (84) via the control block (83), thereby enabling the lock member (84) and the lock gate (70) to engage or separate.

3. The motor with integrated drum brake lock according to claim 2, characterized in that: An oil seal is provided between the fixing seat (81) and the motor shaft (10).

4. The motor with integrated drum brake lock according to claim 2, characterized in that: The brake cover (60) is provided with a cover opening (61), and a wire outlet barrel (812) extends from a side of the fixing seat (81) facing the brake cover (60). The wire outlet barrel (812) is arranged at the cover opening (61) and is rotatably connected to the brake cover (60), and a signal line (821) of the control component (82) extends to the outside through the wire outlet barrel (812).

5. The motor with integrated drum brake lock according to claim 4, characterized in that: The wire outlet barrel (812) is arranged at the cover opening (61) and is rotatably connected to the brake cover (60) via a bearing. An oil seal is also arranged at the connection between the wire outlet barrel (812) and the brake cover (60).

6. The motor with integrated drum brake lock according to claim 1, characterized in that: The lock gate (70) is a plurality of lock teeth, which are arranged in a ring shape along the inner ring of the motor end cover (50), and a lock groove for the lock (80) to engage is provided between each of the lock teeth.

7. The motor with integrated drum brake lock according to claim 1, characterized in that: The motor end cover (50) is provided with a plurality of magnetic steel slots (51) for accommodating magnetic steel.

8. The motor with integrated drum brake lock according to claim 1, characterized in that: The motor end cover (50) and the wheel hub (40) are connected via threads.

9. The motor with integrated drum brake lock according to claim 1, characterized in that: The motor shaft (10) is provided with a cable channel (11).

10. The motor with integrated drum brake lock according to any one of claims 1 to 9, characterized in that: A reducer (90) is also included, and the rotor (30) is connected to the hub (40) via the reducer (90).

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