A novel encoder motor

Abstract

The application discloses a novel encoder motor, which comprises a motor unit and an encoder unit. The motor unit is provided with a mounting platform at the tail of the motor unit, a plurality of mounting structures for mounting a gear set are arranged on the mounting platform, and a static disc support is arranged on the two sides of the mounting platform. The encoder unit comprises an encoder moving disc, an encoder static disc and a gear multi-turn structure. The encoder moving disc is fixed at the tail end of a motor main shaft. The encoder static disc is fixed on the static disc support and located on the side of the encoder moving disc close to the motor. The gear multi-turn structure comprises a gear set. The gear set is mounted on the mounting platform at the tail of the motor unit and in transmission connection with the motor main shaft. The application has the advantages of simpler structure and easier assembly.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a novel encoder motor. Background Technology

[0002] Currently, encoders are becoming increasingly important in the field of servo systems, and the multi-turn design scheme of encoders is an important part of encoder design.

[0003] The multi-turn design of encoders mainly adopts three methods: electronic multi-turn, mechanical multi-turn, and self-generated multi-turn.

[0004] Among them, electronic multi-turn coils require additional batteries and regular maintenance; self-generating multi-turn coils are very expensive, and the self-generating coils are also easily affected by vibration, temperature, environment and their own consistency, making them more likely to lose coils.

[0005] Therefore, the reliability and manufacturability of mechanical multi-turn encoders have prompted many encoder manufacturers to begin developing and deploying their own research and development programs. Current mechanical multi-turn designs, such as... Figure 1 As shown, Figure 1 In the diagram, 101 represents a multi-turn gear structure, and 102 represents a single-turn unit. Current mechanical multi-turn designs primarily use a single-turn design near the motor end, mainly employing inductive, photoelectric, or capacitive methods. On the other side of the single-turn design module, away from the motor body, the mechanical multi-turn component is assembled to achieve multi-turn counting by the encoder.

[0006] This approach has the following drawbacks:

[0007] The multi-turn section of the gear is closest to the tail shaft of the motor, which means that the radial runout of the gear is the greatest. The difference in the concentricity of the gears will lead to wear or even failure of the gears.

[0008] An additional gear fixing unit needs to be designed. Currently, the main method is to use a specially designed housing to fix the gear set to the housing to ensure installation, and additional stops are also required.

[0009] The encoder height will increase significantly, the motor shaft needs to be extended, and the design requirements for the efficiency of the first-stage transmission gears will be more stringent. Summary of the Invention

[0010] This application provides a novel encoder motor, which has the advantages of simpler structure and easier assembly.

[0011] The above-mentioned objective of this application is achieved through the following technical solution: a novel encoder motor, comprising a motor unit and an encoder unit, wherein:

[0012] The motor unit has a mounting platform at its tail end, which is provided with several mounting structures for mounting the gear set, and stationary plate supports are provided on both sides of the mounting platform.

[0013] The encoder unit includes an encoder moving plate, an encoder stationary plate, and a multi-turn gear structure. The encoder moving plate is fixed to the end of the motor spindle, and the encoder stationary plate is fixed on the stationary plate bracket and located on the side of the encoder moving plate closer to the motor. The multi-turn gear structure includes a gear set, which is mounted on the mounting platform at the tail of the motor unit and is connected to the motor spindle for transmission.

[0014] Furthermore, a gear sleeve is provided on the motor spindle for transmission connection with the gear set. This design achieves the transmission connection with the gear set via the gear sleeve, eliminating the need for additional gears on the motor spindle.

[0015] Furthermore, teeth are machined on the motor spindle, and these teeth are connected to the gear set for transmission. This design achieves the transmission connection between the motor spindle and the gear set directly on the motor spindle, eliminating the need for additional gears on the motor spindle itself.

[0016] Furthermore, the mounting structure includes several shaft holes and positioning steps, and the gear set is mounted on the mounting platform through the shaft holes and / or positioning steps.

[0017] Furthermore, the encoder stationary disk is provided with a PCB circuit board, on one side of which a multi-turn recognition unit is integrated near the motor side, and on the other side a single-turn recognition unit is integrated.

[0018] In summary, the beneficial effects of this application are as follows:

[0019] 1. This application installs the multi-turn gear set of the encoder at the tail end of the motor. Compared with the existing mechanical multi-turn encoder, it eliminates the need for gear set stops, fixed housings of the gear set, and other components, reducing the number of parts and facilitating assembly.

[0020] 2. In this application, the multi-turn gear set of the encoder is installed at the tail end of the motor. Compared with the existing mechanical multi-turn encoder where the gear set is set at the tail end of the motor shaft, this can reduce the radial runout of the gears, improve the encoder detection accuracy and the service life of the gear set.

[0021] 3. Compared with existing mechanical multi-turn encoder solutions, this application reduces the encoder height because the gear set is directly installed at the tail of the motor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a mechanical multi-turn encoder in the prior art;

[0023] Figure 2 This is a schematic diagram of the motor unit in the embodiments of this application. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the motor unit in the embodiments of this application. Figure 2 ;

[0025] Figure 4 This is an assembly diagram of the gear set in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the gear set after assembly in an embodiment of this application;

[0027] Figure 6 This is an assembly diagram of the encoder unit in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the encoder unit after assembly in an embodiment of this application.

[0029] In the diagram, 101 is a multi-turn gear structure; 102 is a single-turn unit; 201 is a mounting platform; 202 is a stationary disc support; 203 is a mounting structure; 204 is an encoder stationary disc; 205 is an encoder moving disc; 206 is a gear sleeve; and 207 is a gear set. Detailed Implementation

[0030] The specific embodiments of this application are described in detail below with reference to the accompanying drawings.

[0031] Example: A novel encoder motor, as shown in references 2-7, includes a motor unit and an encoder unit.

[0032] The motor unit has a mounting platform 201 at its tail end. The mounting platform 201 is provided with several mounting structures 203 for mounting the gear set 207. The mounting platform 201 has stationary plate supports 202 on both sides.

[0033] The encoder unit includes an encoder moving plate 205, an encoder stationary plate 204, and a multi-turn gear structure. The encoder moving plate 205 is fixed to the end of the motor spindle, and the encoder stationary plate 204 is fixed on the stationary plate bracket 202 and located on the side of the encoder moving plate 205 closer to the motor. The multi-turn gear structure includes a gear set 207, which is mounted on the mounting platform 201 at the tail of the motor unit and is connected to the motor spindle for transmission.

[0034] The mounting structure 203 includes several shaft holes and positioning steps, and the gear set is mounted on the mounting platform 201 through the shaft holes and / or positioning steps.

[0035] The encoder stationary disk 204 is equipped with a PCB circuit board. A multi-turn recognition unit is integrated on one side of the PCB circuit board near the motor, and a single-turn recognition unit is integrated on the other side. The single-turn recognition unit faces the encoder moving disk, and the multi-turn recognition unit faces the end gear in the gear set to achieve multi-turn detection.

[0036] A gear sleeve 206 is provided on the motor spindle for transmission connection with the gear set. The transmission connection with the gear set is achieved through the gear sleeve, eliminating the need to install other gears on the motor spindle.

[0037] In some other embodiments of this application, teeth are machined on the motor spindle, and these teeth are connected to a gear set for transmission. This solution achieves the transmission connection between the motor spindle and the gear set directly on the motor spindle, eliminating the need for additional gears on the motor spindle.

[0038] The specific structure of the gear set can be designed with reference to the gear set of existing mechanical multi-turn encoders, or designed according to the required traditional ratio. The use of conventional gear combinations to achieve multi-turn measurement schemes for encoders are all within the scope of protection of this application.

[0039] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this application, and these all fall within the protection scope of this application.

Claims

1. A novel encoder motor, characterized in that, Includes a motor unit and an encoder unit, wherein: The motor unit has a mounting platform at its tail end, which is provided with several mounting structures for mounting the gear set, and stationary plate supports are provided on both sides of the mounting platform. The encoder unit includes an encoder moving plate, an encoder stationary plate, and a multi-turn gear structure. The encoder moving plate is fixed to the end of the motor spindle, and the encoder stationary plate is fixed on the stationary plate bracket and located on the side of the encoder moving plate closer to the motor. The multi-turn gear structure includes a gear set, which is mounted on the mounting platform at the tail of the motor unit and is connected to the motor spindle for transmission.

2. The novel encoder motor according to claim 1, characterized in that, The motor spindle is equipped with a gear sleeve that is connected to the gear set for transmission.

3. The novel encoder motor according to claim 1, characterized in that, The motor spindle has teeth machined on it, and these teeth are connected to the gear set for transmission.

4. The novel encoder motor according to claim 1, characterized in that, The mounting structure includes several shaft holes and positioning steps, and the gear set is mounted on the mounting platform through the shaft holes and / or positioning steps.

5. The novel encoder motor according to claim 1, characterized in that, The encoder stationary disk is equipped with a PCB circuit board. The side of the PCB circuit board closest to the motor integrates a multi-turn recognition unit, and the other end integrates a single-turn recognition unit.

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