Motor rear end cover for fixing PCB (printed circuit board) of encoder

Abstract

The utility model relates to the technical field of motor accessories, in particular to a motor rear end cover for fixing an encoder PCB (printed circuit board). The end cover comprises an end cover body, a fixing seat and a limiting mechanism, a mounting plate is integrally formed on the outer side of the end cover body, a plurality of groups of convex blocks are circumferentially arranged on the inner wall of the end cover body at equal intervals, an annular PCB is connected in the end cover body in a limiting manner, notches matched with the convex blocks are formed in the outer side of the annular PCB, the fixing seat is arranged on the inner side of the end cover body, and the limiting mechanism is arranged on the fixing seat. According to the end cover, the PCB is positioned and inserted in the end cover body through the cooperation of the protruding blocks and the notches, meanwhile, the fixing base is arranged in the end cover body, the limiting mechanism composed of the sliding plate, the check blocks and the springs is arranged in the fixing base, when the PCB is inserted, the elastically-contracted check openings will automatically limit the PCB, and then the PCB is fixed. The fastening screws do not need to be manually operated one by one during mounting and dismounting, and the overall dismounting and mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor accessories, in particular to a motor rear end cover for fixing an encoder PCB board. Background Art

[0002] A motor's rear end cap generally refers to a cap at each end of the motor, where the axial dimension is larger than the radial dimension. Its primary function is to determine the spatial position of the rotor shaft. By coupling it with various bearing types and attaching it to the housing that holds the motor's stator, it ensures a proper clearance between the rotor and stator. In some motors, an encoder is installed to precisely control the motor's speed and position to detect its motion. The encoder's PCB needs to be fixed to a specific location on the motor to accurately read its motion information. In this case, the motor's rear end cap may be designed to secure the encoder PCB.

[0003] Chinese patent application CN218472977U discloses a motor rear end cap for securing an encoder PCB. The cap comprises an integrally formed end cap body with a mounting slot defined on its inner side. The slot houses several mounting blocks arranged circumferentially within the slot, each with a positioning hole. This design improves product reliability and assembly efficiency, saving production time and costs.

[0004] However, the motor rear end cover mentioned above is only fixed to the PCB board by setting a mounting seat inside and opening holes in the mounting seat. During installation or process, it is necessary to screw on or loosen the fastening screws one by one, which is relatively troublesome. Utility Model Content

[0005] To address the problems existing in the prior art, a motor rear end cover for securing an encoder PCB is proposed. The end cover body positions and inserts the PCB via a protrusion and notch. A fixing seat is provided within the end cover body, and a limiting mechanism consisting of a slide, a stopper, and a spring is incorporated within the fixing seat. When the PCB is inserted, the elastically contracting stop automatically limits it, securing the PCB. This eliminates the need for manual tightening of screws during installation and removal, improving overall assembly and removal efficiency.

[0006] The utility model proposes a motor rear end cover for fixing an encoder PCB board, comprising

[0007] The end cap body has a mounting plate integrally formed on its outer side, and multiple groups of protrusions are equidistantly arranged on its inner wall along the circumference. An annular PCB board is connected to the inner limit, and a notch is opened on the outer side of the annular PCB board to fit the protrusions;

[0008] A fixing seat, which is arranged on the inner side of the end cover body and has an axial hole formed integrally with the end cover body; and

[0009] The limiting mechanism is arranged on the fixing seat and is used to limit the position of the annular PCB board.

[0010] Preferably, fixing holes are symmetrically provided at the four corners of the mounting plate, which are used to assemble the end cover body and the motor housing.

[0011] Preferably, a finger groove is provided on the inner wall of the end cover body, which is used to pick out the annular PCB board from the end cover body.

[0012] Preferably, the limiting mechanism includes a slide, a block and a spring. Grooves are provided on both sides of the fixed seat, and a slide is slidably arranged in the groove. One end of the spring is connected to the groove wall of the groove, and the other end is connected to the slide. The side of the slide facing away from the spring is connected to a block extending to the outside of the fixed seat.

[0013] Preferably, the two groups of stoppers are provided with wedge-shaped surfaces on the opposite sides thereof, which are used to drive the stoppers to move back and make way when subjected to a pressing force.

[0014] Preferably, a through slot communicating with the groove is provided on the fixing seat, a connecting rod passing through the through slot is connected to the slide plate, and a finger ring is connected to one end of the connecting rod facing away from the slide plate.

[0015] Through the above technical solution, the end cover body disclosed in the utility model is positioned and plugged with the PCB board through the cooperation of the protrusion and the notch, and at the same time a fixing seat is provided in the end cover body, and a limiting mechanism composed of a slide plate, a stop block and a spring is provided in the fixing seat. When the PCB board is plugged in, the elastically contracted stop will automatically limit it, that is, the fixation of the PCB board is completed, and there is no need to manually operate the fastening screws one by one during installation and disassembly, thereby improving the overall disassembly and assembly efficiency.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a motor rear end cover for fixing an encoder PCB board in the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the side section structure;

[0019] Figure 3 for Figure 1 Schematic diagram of the split structure;

[0020] Figure 4 for Figure 1A local enlarged structural diagram of point A;

[0021] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at point B.

[0022] Figure numerals: 1, end cover body; 2, mounting plate; 3, bump; 4, annular PCB board; 5, notch; 6, fixing seat; 7, shaft hole; 8, fixing hole; 9, finger groove; 10, slide plate; 11, stopper; 12, spring; 13, groove; 14, through groove; 15, connecting rod; 16, finger ring. DETAILED DESCRIPTION

[0023] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0024] Example 1

[0025] like Figure 1-Figure 5 As shown, the utility model proposes a motor rear end cover for fixing an encoder PCB board, comprising an end cover body 1, a fixing seat 6 and a limiting mechanism. A mounting plate 2 is integrally formed on the outer side of the end cover body 1, and a plurality of groups of protrusions 3 are equidistantly arranged on the inner wall thereof in a circumferential manner. An annular PCB board 4 is connected to the inner limit, and a notch 5 is provided on the outer side of the annular PCB board 4 to cooperate with the protrusions 3. A fixing seat 6 is provided on the inner side of the end cover body 1, and an axial hole 7 integrally formed with the end cover body 1 is provided on the fixing seat 6. A limiting mechanism is provided on the fixing seat 6 for limiting the position of the annular PCB board 4.

[0026] like Figure 1 As shown, fixing holes 8 are symmetrically provided at the four corners of the mounting plate 2 , which are used to assemble the end cover body 1 with the motor housing.

[0027] like Figure 1 As shown, a finger groove 9 is provided on the inner wall of the end cover body 1 , which is used to pick out the annular PCB board 4 from the end cover body 1 .

[0028] When fixing the annular PCB board 4, first align the notch 5 on it with the insert block, and then push it into the end cover body 1 from one side of the mounting plate 2. During the pushing process, the limiting mechanism automatically limits it.

[0029] Example 2

[0030] like Figure 1-Figure 5 As shown, the present invention proposes a motor rear end cover for fixing an encoder PCB board. Based on the above embodiment, this embodiment also records in detail the specific components of the limiting mechanism and the limiting method for the annular PCB board 4.

[0031] like Figure 2 and Figure 5 As shown, the limiting mechanism includes a slide 10, a block 11 and a spring 12. Grooves 13 are provided on both sides of the fixed seat 6. The slide 10 is slidably arranged in the groove 13. One end of the spring 12 is connected to the groove wall of the groove 13, and the other end is connected to the slide 10. The side of the slide 10 facing away from the spring 12 is connected to the block 11 extending to the outside of the fixed seat 6.

[0032] like Figure 5 As shown, the two sets of stoppers 11 are provided with wedge-shaped surfaces on the opposite sides thereof, which are used to drive the stoppers 11 to move back and make way when subjected to a pressing force.

[0033] When the annular PCB board 4 is pushed in, the side of its inner ring will press the wedge-shaped surface of the stopper 11. When the stopper 11 is subjected to the squeezing force, it will move back toward the groove 13. During this movement, the end of the stopper 11 will drive the slide 10 to compress the spring 12. When the annular PCB board 4 passes over the stopper 11, the spring 12 releases the elastic potential energy accumulated when being squeezed, driving the stopper 11 to return to its original position, passing through the fixing seat 6 to limit the annular PCB board 4, thus completing the installation of the annular PCB board 4.

[0034] like Figure 1 and Figure 4 As shown, a through slot 14 communicating with the groove 13 is formed on the fixing seat 6 , and a connecting rod 15 passing through the through slot 14 is connected to the slide 10 , and a finger ring 16 is connected to the end of the connecting rod 15 facing away from the slide 10 .

[0035] When the annular PCB board 4 needs to be removed, the two finger rings 16 are clasped by the index finger and thumb of one hand, and then the two finger rings 16 are moved closer to each other. During the approaching process, the finger rings 16 drive the slide 10 to move via the connecting rod 15, so that the stopper 11 moves into the groove 13. The thumb of the other hand is inserted into the finger groove 9 to pull the annular PCB board 4 out of the end cover body 1.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A motor rear end cover for fixing an encoder PCB board, characterized in that: include The end cover body (1) has a mounting plate (2) integrally formed on its outer side, and a plurality of groups of protrusions (3) are arranged on its inner wall at equal intervals in a circumferential manner. An annular PCB board (4) is connected to the inner limit, and a notch (5) for the protrusions (3) to fit is provided on the outer side of the annular PCB board (4); A fixing seat (6) is arranged on the inner side of the end cover body (1) and is provided with an axial hole (7) formed integrally with the end cover body (1); and The limiting mechanism is arranged on the fixing seat (6) and is used to limit the position of the annular PCB board (4).

2. A motor rear end cover for fixing an encoder PCB board according to claim 1, characterized in that: The four corners of the mounting plate (2) are symmetrically provided with fixing holes (8) for assembling the end cover body (1) and the motor housing.

3. The motor rear end cover for fixing an encoder PCB according to claim 1, characterized in that: The inner wall of the end cover body (1) is provided with a finger groove (9) for picking out the annular PCB board (4) from the end cover body (1).

4. The motor rear end cover for fixing an encoder PCB according to claim 1, characterized in that: The limiting mechanism comprises a slide plate (10), a stopper (11) and a spring (12). Grooves (13) are provided on both sides of the fixing seat (6). The slide plate (10) is slidably arranged in the groove (13). One end of the spring (12) is connected to the groove wall of the groove (13), and the other end is connected to the slide plate (10). The side of the slide plate (10) facing away from the spring (12) is connected to the stopper (11) extending to the outside of the fixing seat (6).

5. The motor rear end cover for fixing an encoder PCB according to claim 4, characterized in that: The two groups of stoppers (11) are provided with wedge-shaped surfaces on the opposite sides thereof, which are used to drive the stoppers (11) to move back and make way when subjected to a pressing force.

6. The motor rear end cover for fixing an encoder PCB according to claim 4, characterized in that: A through slot (14) communicating with the groove (13) is provided on the fixing seat (6); a connecting rod (15) passing through the through slot (14) is connected to the slide plate (10); and a finger ring (16) is connected to one end of the connecting rod (15) away from the slide plate (10).

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