PCB fixing structure of servo motor

Abstract

The utility model discloses a PCB fixing structure of a servo motor, which is applied to the servo motor. The servo motor comprises a motor shell, a rear end cover, a servo motor shaft and a winding wire, and an encoder shell is arranged on the rear side of the rear end cover; a connecting shell is embedded in the encoder shell, and a notch is formed in the connecting shell; a PCB is fixed at the upper end of the connecting shell, and the PCB and the connecting shell form an accommodating cavity; a sensor corresponding to the rotating end of the servo motor shaft is arranged on the lower side face of the PCB. The output end of the PCB is provided with a coding line, and the coding line is led out from the PCB and penetrates out of the motor shell through the notch; and the winding wire is led out from the interior of the motor shell and penetrates out of the motor shell through the accommodating cavity and the notch. According to the utility model, the fixing effect of the PCB is more stable, and the wiring of the servo motor is convenient and simple.

Description

TECHNICAL FIELD

[0001] The utility model belongs to servo motor assembly field, especially a kind of PCB board fixing structure of servo motor. BACKGROUND

[0002] With the development of industrial automation, servo motor is applied more and more widely in various equipment. In the operation process of servo motor, PCB board plays a vital role, for example, for controlling the operation of motor, monitoring the state of motor, etc. Traditional PCB board fixing structure has some problems, such as not firm, wiring inconvenience, etc. These problems will affect the performance and stability of servo motor, and cannot meet the needs of servo motor in different working scenarios. SUMMARY

[0003] The utility model aims at providing a kind of PCB board fixing structure of servo motor. The utility model can make the fixing effect of PCB board more stable, and make the wiring of servo motor convenient and simple.

[0004] The utility model discloses a kind of PCB board fixing structure of servo motor, applied to servo motor;The servo motor includes motor shell, rear end cover, servo motor shaft and winding wire, and the rear side of rear end cover is equipped with encoder shell;Encoder shell is embedded with connecting shell inside, and slot is provided on connecting shell;The upper end of connecting shell is fixed with PCB board, and PCB board and connecting shell form accommodating cavity;The lower side of PCB board is equipped with the sensor corresponding with the rotation end of servo motor shaft;The output end of the PCB board is equipped with encoding line, and encoding line is led out from PCB board and is worn to the motor shell outside via the slot;The winding wire is led out from the motor shell and is worn to the motor shell outside via the accommodating cavity and the slot.

[0005] In the foregoing PCB board fixing structure of servo motor, the four corners of the two sides of the PCB board are respectively equipped with limiting hole and first mounting hole, the top of the four corners of the two sides of the connecting shell is respectively equipped with limiting convex point and second mounting hole, limiting convex point is clamped in limiting hole, and PCB board is fixedly connected with connecting shell in sequence via screw and first mounting hole and second mounting hole.

[0006] In the foregoing PCB board fixing structure of servo motor, the bottom of the connecting shell is equipped with through hole, and the periphery of the through hole is annularly equipped with a plurality of third mounting holes, and connecting shell is connected with rear end cover via screw and third mounting hole.

[0007] In the foregoing PCB board fixing structure of servo motor, the bottom of the one side of the connecting shell is equipped with wire outlet hole.

[0008] The winding wire passes through the outlet hole into the accommodating cavity from the motor housing.

[0009] The four corners of the motor housing and the rear end cover are fixedly connected through short screws.

[0010] The fourth mounting hole is arranged at the bottom of the connecting housing, and the encoder housing is fixedly connected with the motor housing through long screws in sequence through the encoder housing, the fourth mounting hole and the rear end cover.

[0011] Compared with the prior art, the PCB board fixing structure of the servo motor has the following beneficial effects:

[0012] The PCB board is embedded on the connecting housing in the encoder housing, and the connecting housing forms the accommodating cavity to layout the circuit, so that the space inside the encoder housing can be effectively utilized, and the PCB board has a relatively stable installation basis in the encoder housing, so that the PCB board is not easily displaced due to vibration of the motor during operation of the servo motor. In addition, the limiting protrusions and the limiting holes are arranged on the two sides of the four corners of the PCB board, and the limiting protrusions and the limiting holes are arranged on the two sides of the four corners of the top of the connecting housing, so that the limiting protrusions are matched with the limiting holes and then fixed through screws, so that the connection between the PCB board and the connecting housing is more stable, and the possibility of loosening or displacement of the PCB board during operation of the motor is reduced. The connecting housing inside and the PCB board form the accommodating cavity, the outlet hole is arranged at the bottom of one side of the connecting housing, and a plurality of notches are arranged on the side of the encoder housing, so that the winding wire and the encoding wire are orderly led out from the motor housing to the outside of the motor housing, the circuit is avoided to be disordered, the electromagnetic interference between the circuits is reduced, and the electromagnetic compatibility of the servo motor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a schematic view of the utility model;

[0014] Fig. 2 is a schematic view of the utility model.

[0015] The marks in the drawings are: 1, motor housing; 2, rear end cover; 3, servo motor shaft; 4, winding wire; 5, encoder housing; 6, connecting housing; 7, PCB board; 8, sensor; 9, containing cavity; 10, slot; 11, encoding line; 12, limiting hole; 13, first mounting hole; 14, limiting convex point; 15, second mounting hole; 16, through hole; 17, third mounting hole; 18, wire outlet hole; 19, mounting groove; 20, fourth mounting hole. DETAILED DESCRIPTION

[0016] The utility model will be further explained in connection with the drawings and examples, but not as the basis for limiting the utility model.

[0017] Example: a kind of PCB board fixed structure of servo motor, constitute as shown in Figs. 1-2 It is applied to servo motor;Servo motor includes motor housing 1, rear end cover 2, servo motor shaft 3 and winding wire 4, and the rear side of rear end cover 2 is equipped with encoder housing 5. Encoder housing 5 is embedded with connecting housing 6 inside, and slot is provided on connecting housing 6. The upper end of connecting housing 6 is fixed with PCB board 7, and containing cavity 9 is formed in PCB board 7 and connecting housing 6. The lower side of PCB board 7 is equipped with sensor 8 corresponding to the rotating end of servo motor shaft 3. The output end of PCB board 7 is equipped with encoding line 11, and encoding line 11 is led out from PCB board 7 and passes through slot 10 to motor housing 1. Winding wire 4 is led out from motor housing 1 and passes through containing cavity 9 and slot 10 to motor housing 1.

[0018] The two sides of the four corners of PCB board 7 are respectively equipped with limiting hole 12 and first mounting hole 13, the two sides of the four corners of the top of connecting housing 6 are respectively equipped with limiting convex point 14 and second mounting hole 15, limiting convex point 14 is clamped in limiting hole 12, and PCB board 7 is fixedly connected with connecting shell by screwing through first mounting hole 13 and second mounting hole 15 in sequence.

[0019] The bottom of connecting housing 6 is equipped with through hole 16, and a plurality of third mounting holes 17 are annularly arranged on the periphery of through hole 16, and connecting housing 6 is connected with rear end cover 2 by screwing through third mounting hole 17. One side of the bottom of connecting housing 6 is equipped with wire outlet hole 18. Winding wire 4 passes through wire outlet hole 18 from motor housing 1 into containing cavity 9, and the rotating end of servo motor shaft 3 passes through through hole 16 into containing cavity 9.

[0020] The four corners of motor housing 1 are fixedly connected with rear end cover 2 by short screw, and the bottom of connecting housing 6 is equipped with mounting groove 19 for mounting short screw. The bottom of connecting housing 6 is equipped with fourth mounting hole 20, and encoder housing 5 is fixedly connected with motor housing 1 by long screw through encoder housing 5, fourth mounting hole 20 and rear end cover 2 in sequence.

[0021] The structure can effectively utilize the space inside the encoder housing 5, and meanwhile, the PCB 7 has a relatively stable installation basis inside the encoder housing 5, so that the PCB 7 is not easily displaced due to the vibration of the motor during the operation of the motor. The sensor 8 is arranged on the lower side of the PCB 7 and corresponds to the rotating end of the motor shaft 3, so that the sensor 8 can accurately detect the condition of the motor shaft 3, and the working precision of the entire motor is improved. In addition, the limiting protrusions 14 and the limiting holes 12 are arranged on the four corners of the PCB 7, and the limiting protrusions 14 and the second mounting holes 15 are arranged on the four corners of the top of the connecting housing 6, so that the limiting protrusions 14 are matched with the limiting holes 12 and then fixed by screws, thereby making the connection between the PCB 7 and the connecting housing 6 more stable, and reducing the possibility of loosening or displacement of the PCB 7 during the operation of the motor. The connecting housing 6 inside the connecting housing 6 forms the accommodating cavity 9 with the PCB 7, and the wire outlet hole 18 is arranged on the bottom of one side of the connecting housing 6, and the plurality of notches 10 are arranged on the side of the encoder housing 5, so that the winding wire 4 and the encoding wire 11 are orderly led out from the motor housing 1 to the outside of the motor housing 1, the line is avoided to be disorderly arranged, the electromagnetic interference between the lines is reduced, and the electromagnetic compatibility of the motor is improved.

[0022] Installation process

[0023] Firstly, the motor housing 1 and the rear end cover 2 are fixedly connected by using short screws. Then, the connecting housing 6 is connected with the rear end cover 2 by passing the third mounting holes 17 through the screws, the PCB 7 is placed on the upper end of the connecting housing 6, the sensor 8 on the lower side of the PCB 7 corresponds to the rotating end of the motor shaft 3, the limiting holes 12 on the four corners of the PCB 7 are matched with the limiting protrusions 14 on the four corners of the top of the connecting housing 6, and the PCB 7 and the connecting housing 6 are fixedly connected by passing the first mounting holes 13 of the PCB 7 and the second mounting holes 15 of the connecting housing 6 through the screws in sequence. Then, the encoder housing 5 is embedded on the connecting housing 6, and the position is ensured to be accurate. Finally, the motor housing 1 and the rear end cover 2 are fixedly connected by passing the fourth mounting holes 20 of the bottom of the connecting housing 6, the encoder housing 5 and the connecting housing 6 through the long screws in sequence, and the installation of the PCB 7 fixing structure of the entire motor is completed.

[0024] In summary, the PCB 7 fixing structure can make the fixing effect more stable, and meanwhile, the performance and stability of the motor are improved.

Claims

1. A PCB fixing structure of a servo motor, applied to a servo motor; the servo motor comprises a motor shell (1), a rear end cover (2), a servo motor shaft (3) and a winding wire (4), and an encoder shell (5) is arranged on the rear side of the rear end cover (2); characterized in that: The encoder shell (5) is embedded with a connecting shell (6) inside, and the connecting shell (6) is provided with a notch (10); the upper end of the connecting shell (6) is fixed with a PCB board (7), and the PCB board (7) and the connecting shell (6) form an accommodating cavity (9); the lower side of the PCB board (7) is provided with a sensor (8) corresponding to the rotating end of the servo motor shaft (3); the output end of the PCB board (7) is provided with an encoding line (11), which is led out from the PCB board (7) and passes through the notch (10) to the outside of the motor shell (1); the winding wire (4) is led out from the motor shell (1) and passes through the accommodating cavity (9) and the notch (10) to the outside of the motor shell (1).

2. The PCB fixing structure of a servo motor according to claim 1, wherein: The four corners of the PCB board (7) are respectively provided with limiting holes (12) and first mounting holes (13), the top of the connecting shell (6) is respectively provided with limiting convex points (14) and second mounting holes (15), the limiting convex points (14) are clamped in the limiting holes (12), and the PCB board (7) is fixedly connected with the connecting shell through screws passing through the first mounting holes (13) and the second mounting holes (15) in sequence.

3. The PCB fixing structure of a servo motor according to claim 1, wherein: The bottom of the connecting shell (6) is provided with a through hole (16), and the periphery of the through hole (16) is annularly provided with a plurality of third mounting holes (17), and the connecting shell (6) is connected with the rear end cover (2) through screws passing through the third mounting holes (17).

4. The PCB fixing structure of a servo motor according to claim 3, wherein: One side of the bottom of the connecting shell (6) is provided with a wire outlet hole (18).

5. The PCB fixing structure of a servo motor according to claim 4, wherein: The winding wire (4) passes through the wire outlet hole (18) from the motor shell (1) into the accommodating cavity (9); the rotating end of the servo motor shaft (3) passes through the through hole (16) into the accommodating cavity (9).

6. The PCB fixing structure of a servo motor according to claim 1, wherein: The four corners of the motor shell (1) and the rear end cover (2) are fixedly connected through short screws; the bottom of the connecting shell (6) is provided with a mounting groove (19) for mounting the short screw.

7. The PCB fixing structure of a servo motor according to claim 1, wherein: The bottom of the connecting shell (6) is provided with a fourth mounting hole (20); the encoder shell (5) is fixedly connected with the motor shell (1) through long screws passing through the encoder shell (5), the fourth mounting hole (20) and the rear end cover (2) in sequence.

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