CN220673575U - Encoder assembly and motor - Google Patents

Abstract

The utility model discloses an encoder assembly, which comprises a cover body and a PCB board, wherein a built-in cavity is arranged in the cover body, more than one positioning part for positioning and installing the PCB board is arranged in the built-in cavity, and the PCB board is fixed on the positioning part, and is characterized in that: the device comprises a motor, a PCB (printed circuit board) and a code disc assembly, wherein the PCB is provided with an opening in the middle, the code disc assembly comprises a code disc support and a sensing piece arranged on the code disc support, the code disc support comprises a code disc mounting part and a mounting handle part, the sensing piece is arranged on the code disc mounting part, and the mounting handle part is fixedly connected with the motor rotating shaft; the mounting handle faces the cover body and is inserted into the opening of the PCB. Through installing encoder PCB board location on the cover body, form a subassembly, on the rear end cap of motor is installed to the rethread cover body location, offer the opening simultaneously in the PCB board and be used for holding the code wheel subassembly, compared in prior art has cancelled the encoder support, and the structure is simplified, has simplified the assembly degree of difficulty of encoder, has shortened the axial dimension of encoder structure simultaneously.

Description

Encoder assembly and motor

Technical Field

The utility model relates to the technical field of motors, in particular to an encoder assembly and a servo motor.

Background

With the development of the automation industry, motion control products are increasingly applied in various fields; servo motor products are also being used more widely in different fields and environments. Servo motors are one of the key products of the motion control product group and are also important actuators in modern industrial equipment. Encoders used in servo motors are an important component of the motor.

The existing encoder generally comprises an encoder bracket, a PCB and an encoder rotor, wherein the PCB is installed through the encoder bracket in a positioning way, the structure and the assembly mode can lead to the overall encoder to be higher in structure height, and the length of a rear cover of the encoder needs to be increased, so that the total length of a motor is influenced, and the miniaturization of the motor is not facilitated. In addition, the existing encoder is complicated in mounting steps on the motor, and production efficiency of the motor is affected.

Disclosure of Invention

The utility model aims to provide an encoder assembly and a motor, which are used for solving the technical problem that the total length of the motor is too long in the prior art.

In order to achieve the above purpose, the encoder assembly provided by the utility model comprises a cover body and a PCB (printed circuit board), wherein a built-in cavity is arranged in the cover body, more than one positioning part for positioning and installing the PCB is arranged in the built-in cavity, the PCB is fixed on the positioning part, the encoder assembly further comprises a code wheel assembly, an opening part is formed in the middle of the PCB, the code wheel assembly comprises a code wheel bracket and a sensing piece arranged on the code wheel bracket, the code wheel bracket comprises a code wheel installation part and an installation handle part, the sensing piece is arranged on the code wheel installation part, and the installation handle part is fixedly connected with a motor rotating shaft; the mounting handle faces the cover body and is inserted into the opening of the PCB.

According to the encoder assembly, the PCB of the encoder is positioned and mounted on the cover body to form the assembly, the encoder is positioned and mounted on the rear end cover of the motor through the cover body, and meanwhile, the opening part is arranged in the middle of the PCB to accommodate the code disc assembly.

Preferably, the positioning portion is a positioning step.

Preferably, the positioning part is disposed at the bottom surface of the internal cavity.

Preferably, the PCB board is fixedly connected with the positioning portion through a threaded connection member.

Preferably, the cover body is provided with more than one threaded connection hole for connecting the motor.

Preferably, the side wall of the cover body is provided with an encoder outlet for leading out an encoder wire.

The utility model also provides a motor, which comprises the encoder assembly; the motor further comprises a motor body, the motor body comprises a motor rotating shaft and a rear end cover, the code wheel assembly is fixedly arranged on the motor rotating shaft, and the cover body is arranged on the rear end cover in a positioning mode.

The motor provided by the utility model indirectly realizes the positioning and mounting of the PCB of the encoder through the positioning cover body of the rear end cover, omits the encoder bracket, has a simple structure and a simple assembly mode, realizes the reduction of the axial length of the motor, and improves the production efficiency of the motor.

Preferably, a code disc positioning shaft shoulder is arranged on the motor rotating shaft and used for positioning and mounting the code disc assembly.

Preferably, the rear end cover is provided with a positioning protrusion for positioning and mounting the cover body.

Preferably, the code wheel assembly is sleeved and installed on the motor rotating shaft, a top thread hole is formed in the code wheel assembly, and the code wheel assembly is fixedly installed on the motor rotating shaft through a top thread screw.

Drawings

The utility model is further described below with reference to the drawings and the detailed description.

FIG. 1 is a schematic perspective view of an encoder assembly according to an embodiment of the present utility model with a code wheel assembly removed;

FIG. 2 is a schematic perspective exploded view of an encoder assembly according to an embodiment of the present utility model with a code wheel assembly removed;

FIG. 3 is a schematic diagram of the structure of the code wheel assembly after being mounted on the motor body;

fig. 4 is a schematic diagram of a three-dimensional explosion structure of a motor according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a motor in cross-section from the front view provided in an embodiment of the present utility model;

fig. 6 is an enlarged view at a in fig. 5.

The following is a description of the components in the drawings:

1. the novel electric motor comprises a cover body, a PCB (printed circuit board), a code wheel assembly, a motor body, a positioning step, a mounting hole, an encoder wire outlet hole, a connector, a threaded connector, an opening, a code wheel mounting part, a mounting handle, a top wire hole, a motor rotating shaft, a code wheel positioning shaft shoulder, a rear end cover and a positioning protrusion.

Detailed Description

The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.

The embodiment provides an encoder assembly, referring to fig. 1 to 3, the encoder assembly in the present solution includes a cover 1, a PCB board 2 and a code wheel assembly 3; the inside of the cover body 1 is a concave built-in cavity, the PCB 2 is embedded in the built-in cavity of the cover body 1, and the opening of the built-in cavity faces the direction of the motor; specifically, more than one positioning part for positioning and mounting the PCB 2 is arranged in the internal cavity of the cover 1; the code wheel assembly 3 is configured to be mounted on the motor shaft 41 and rotate along with the motor shaft 41. An opening 22 is formed in the middle of the PCB 2; the code wheel assembly 3 comprises a code wheel bracket 31 and a sensing piece (not shown in the drawing) mounted on the code wheel bracket 31, wherein the code wheel bracket 31 comprises a code wheel mounting part 31 and a mounting handle part 32, the sensing piece is mounted on the code wheel mounting part 31, and the mounting handle part 32 is used for being fixedly connected with a motor rotating shaft 41; the mounting shank 32 is directed toward the housing 1 and is inserted into or through the opening 22 of the PCB 2. The sensing element can be a code wheel or a magnetic ring. The reduction of the axial length of the motor is facilitated.

According to the encoder assembly provided by the utility model, the PCB 2 is positioned and mounted on the cover body 1 to form an assembly, the assembly is positioned and mounted on the rear end cover of the motor through the cover body 1, meanwhile, the opening 22 is arranged in the PCB, and the mounting handle 32 is matched with the way of inserting the opening 22, so that the PCB 2 and the part of the mounting handle 32 share a radial space, the overall height of the encoder assembly is reduced, and compared with the prior art, the encoder assembly has the advantages that the encoder bracket is omitted, the structure is simplified, the assembly difficulty of the encoder is simplified, the axial dimension of the encoder structure is shortened, and the miniaturization of the motor is facilitated.

In some examples, the locating portion may be provided to locate the step 11.

In some examples, as shown in fig. 2, the positioning step 11 is disposed on the bottom surface of the internal cavity, so as to reduce the distance between the PCB 2 and the bottom surface of the cover. In some examples, the number of positioning steps 11 is set to 2 or 3 or 4, and these positioning steps 11 are symmetrically arranged about the center of the cover 1; in other examples, the positioning step 11 is provided in a ring-like structure. The height of the positioning step 11 is as lowest as possible on the premise that the space between the PCB 2 and the cover body 1 can accommodate electronic components on the PCB 2, so that the axial length of the motor is minimized. Of course, it should be noted that, the examples only show one or more schemes, and in practical application, the shape, number and distribution of the positioning steps 11 are not limited, and may be designed according to practical situations.

In some examples, as shown in fig. 1 and 2, the cover 1 is provided with one or more threaded connection holes for connecting the motor 4.

In some examples, as shown in fig. 1 and 2, the positioning step 11 is provided with a mounting hole 12, and is matched with the threaded connector 21 to fix the PCB 2.

The side wall of the cover body 1 is provided with an encoder wire outlet hole 13 for leading out an encoder wire; in some examples, as shown in fig. 1 and 2, the encoder wire hole 13 is provided with a connector 14.

Referring to fig. 4 to 6, the present utility model also provides a motor including the above encoder assembly.

The motor in this embodiment includes a motor body 4, the motor body 4 includes a motor shaft 41 and a rear end cover 42, the code wheel assembly 3 in the above encoder assembly is fixedly mounted on the motor shaft 41, and the cover 1 is positioned and mounted on the rear end cover 42. The positioning and mounting of the encoder PCB 2 are indirectly realized through the positioning cover body 1 of the rear end cover 42, the encoder bracket is omitted, the structure is simple, the assembly mode is simple, the reduction of the axial length of the motor is facilitated, and the production efficiency of the motor is improved.

More specifically, referring to fig. 3, 5 and 6, the motor shaft is provided with a code wheel positioning shaft shoulder 411 for positioning and mounting the code wheel assembly 3, and the rear end cover 42 is provided with a positioning protrusion 421 for positioning and mounting the cover 1. The code wheel assembly 3 is sleeved and installed on the motor rotating shaft 41, a top thread hole 33 is formed in the installation handle 32 of the code wheel assembly 3, and the code wheel assembly 3 is fixedly installed on the motor rotating shaft 41 by screwing a top thread screw into the top thread hole 33 to prop against the motor rotating shaft 41.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides an encoder subassembly, includes the cover body and PCB board, the inside built-in chamber that is provided with of cover body, built-in intracavity is provided with more than one and is used for the location installation the location portion of PCB board, the PCB board is fixed in on the location portion, its characterized in that: the PCB board is provided with an opening, the code disc assembly comprises a code disc support and a sensing piece arranged on the code disc support, the code disc support comprises a code disc mounting part and a mounting handle part, the sensing piece is arranged on the code disc mounting part, and the mounting handle part is used for being fixedly connected with a motor rotating shaft; the mounting handle faces the cover body and is inserted into the opening of the PCB.

2. The encoder assembly of claim 1, wherein the locating portion is a locating step.

3. The encoder assembly of claim 1, wherein the positioning portion is disposed at a bottom surface of the internal cavity.

4. An encoder assembly according to any of claims 1-3, wherein the PCB board is fixedly connected to the positioning portion by a threaded connection.

5. The encoder assembly of claim 1, wherein the housing is provided with one or more threaded connection holes for connection to a motor.

6. The encoder assembly of claim 1, wherein the housing sidewall is provided with an encoder wire outlet for encoder wire extraction.

7. An electric machine comprising an encoder assembly according to any one of claims 1-6; the motor comprises a motor body, the motor body comprises a motor rotating shaft and a rear end cover, the code wheel assembly is fixedly arranged on the motor rotating shaft, and the cover body is arranged on the rear end cover.

8. The motor of claim 7, wherein a code wheel positioning shoulder is provided on the motor shaft for positioning and mounting the code wheel assembly.

9. The motor according to claim 7 or 8, wherein the code wheel assembly is sleeved and mounted on the motor rotating shaft, a top thread hole is formed in the code wheel assembly, and the code wheel assembly is fixedly mounted on the motor rotating shaft through a top thread screw.

10. The motor of claim 7, wherein the rear end cap is provided with a positioning protrusion for positioning and mounting the cover.