A sensor lead wire installation structure

Abstract

The present invention discloses a sensor lead-out cable installation structure, comprising a motor, wherein a junction box is installed on the outer side of the motor. The internal sensor terminal is connected to a sensor lead-out cable, a cable lead-out frame is provided at the bottom of the motor, a cable channel and a clamping portion are provided inside the cable lead-out frame, and the clamping portion comprises a movable clamping plate, a fixed clamping plate and a clamping bolt, corresponding notches are provided on the corresponding surfaces of the movable clamping plate and the fixed clamping plate, clamping bolts are installed at both ends of the movable clamping plate, and the sensor lead-out cable passes through the cable lead-out frame and is connected inside the junction box. The advantage of the present invention is that each sensor lead-out cable can be adjusted and tightened to avoid the phenomenon that the sensor lead-out cables are entangled together.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a sensor lead wire installation structure. Background Art

[0002] The motor is the core of electromechanical energy conversion. It plays an important role in the production, transmission, distribution of electric energy, and the execution of the drive and control system of mechanical devices. It is an important equipment commonly used in industry, agriculture, transportation, national defense engineering and daily life. At the same time, with the continuous improvement of material living standards, more motors are equipped in various equipment to achieve automation and convenience, which makes the application of motors more extensive, and also makes the form of motors more diversified. The motor models tend to be diversified. At the same time, in order to detect the operating parameters inside the motor, various sensors will be installed inside the motor. However, there will be multiple coils wound inside the motor itself. When installing the sensor, the sensor will be connected to the sensor lead cable. If the lead cable is slightly loose, it will be entangled with the internal coil. There are two main reasons for the looseness. First, due to the different motor models, it is difficult to find a matching length of the sensor lead cable. Therefore, the manufacturer usually chooses a longer sensor lead cable, which makes the lead cable in the motor too long and loose; second, because the motor will vibrate when working, the constant vibration is easy to cause the lead cable and the coil to be entangled with each other. After the motor is entangled, it is easy to cause failures, which reduces production efficiency. Summary of the invention

[0003] To solve the above problems, the present invention provides the following technical solutions: a sensor lead wire installation structure, comprising a motor, a junction box is installed on the external side of the motor, a rotating shaft is installed inside the motor, a rotor core is sleeved on the outside of the rotating shaft, a stator core is sleeved on the outside of the rotor core, an internal sensor terminal is installed on the stator core, the internal sensor terminal is connected to a sensor lead cable, a cable lead frame is provided at the bottom of the motor, a cable channel and a clamping part are provided inside the cable lead frame, the clamping part comprises a movable splint, a fixed splint and a clamping bolt, corresponding notches are provided on the corresponding surfaces of the movable splint and the fixed splint, and clamping bolts are installed on both ends of the movable splint.

[0004] Furthermore, the upper part of the cable lead-out frame is connected to a cable stretching frame, and the cable stretching frame includes an upper connecting seat and a lower connecting seat, a threaded rod and a guide rod are provided between the upper connecting seat and the lower connecting seat, a threaded slider is sleeved on the threaded rod and the guide rod, and a driving member is installed at the bottom of the threaded rod, the sensor lead-out cable is inserted from the lower connecting seat, passes through the threaded slider and then passes out from the upper connecting seat, and the sensor lead-out cable is tightly connected to the threaded slider.

[0005] Furthermore, the driving member includes a driving bevel gear, a driven bevel gear and a driving screw, one end of the driving screw extending into the cable stretching frame is fixedly connected to the driving bevel gear, and a driven bevel gear is provided at the bottom of the threaded rod, and the driving bevel gear and the driven bevel gear are meshed.

[0006] Furthermore, the junction box includes a shell and an outer cover, a baffle is provided in the middle of the shell, and the inside of the shell is divided into a collection chamber and a circuit chamber by the baffle.

[0007] Furthermore, a circuit board is installed on the inner wall of the circuit chamber, a partition is fixed on the outer side of the circuit board, a current transformer is fixed on the partition, and the sensor lead cable enters from the bottom of the shell and passes through the current transformer.

[0008] Furthermore, a protective connector is provided at the bottom of the shell, and the protective connector is composed of a hollow bolt and a nut, and the bottom of the hollow bolt is connected to a connecting seat.

[0009] Furthermore, the housing is integrally formed with an outer housing of the motor.

[0010] Furthermore, the notch is semicircular.

[0011] Furthermore, a rubber pad is provided on the notch.

[0012] Furthermore, a support frame is provided at the bottom of the front end of the motor.

[0013] The advantages of the present invention are:

[0014] 1. By providing a cable lead-out frame and a movable clamp and a fixed clamp inside the cable lead-out frame, the cable can be stretched after being installed to prevent the portion of the lead-out cable inside the motor from being too long, which may cause entanglement when the motor is working.

[0015] 2. A cable stretching frame is provided. When the lead-out cable passes through the cable stretching frame, it will be clamped by the internal threaded slider. By driving the threaded rod to rotate and drive the threaded slider to move upward, the lead-out cable stretching adjustment can be achieved, which is simple and convenient.

[0016] 3. The lead cables are collected through the protective connector at the lower right corner of the junction box, which meets the need for convenient lead-out. The fixed current transformer is fixed on the side of the partition to increase the aesthetics. The overall structure is compact, reasonable and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall external structure of the present invention.

[0018] Figure 2This is a diagram showing the internal structure of the tail portion of the motor of the present invention.

[0019] Figure 3 This is a side view of the internal structure of the tail of the motor of the present invention.

[0020] Figure 4 This is the structural diagram of the cable stretching rack and cable lead-out rack.

[0021] Figure 5 This is a structural diagram of the clamping part.

[0022] Figure 6 This is the surface structure diagram of the threaded slider.

[0023] Figure 7 This is the lead-out hole structure diagram.

[0024] Figure 8 This is a three-dimensional diagram of the junction box structure.

[0025] Fig. 9 It is an exploded perspective view of the external overall structure and the junction box of the present invention.

[0026] In the figure: 1 motor, 2 junction box, 3 shaft, 4 rotor core, 5 stator core, 6 internal sensor terminal, 7, sensor lead cable 8, cable lead frame 9, cable channel 10, clamping part, 11 movable splint, 12 fixed splint, 13 clamping bolt, 14 notch, 15 cable stretching frame, 16 upper connecting seat, 17 lower connecting seat, 18 threaded rod, 19 guide rod, 20 threaded slider, 21 active bevel gear, 22 driven bevel gear, 23 driving screw, 24 lead hole, 25 shell, 26 outer cover, 27 baffle, 28 collection chamber, 29 circuit chamber, 30 circuit board, 31 partition, 32 current transformer, 33 hollow bolt, 34 nut, 35 rubber pad, 36 support frame. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Example 1

[0029] A sensor lead wire installation structure includes a motor 1, end covers are provided at the front and rear ends of the motor 1, a corresponding housing is provided on the outside of the motor 1, a support frame 36 is provided at the bottom of the front end of the motor 1, a junction box 2 is provided on the outer side of the motor 1, the junction box 2 includes a shell 25 and an outer cover 26, and its shell 25 part and the housing of the motor 1 are integrally formed, a rotating shaft 3 is installed inside the motor 1, a rotor core 4 is sleeved on the outside of the rotating shaft 3, a stator core 4 is sleeved on the outside of the rotor core 4, an internal sensor terminal 6 is installed on the stator core 4, the internal sensor terminal 6 is connected to a sensor lead cable 7, the sensor lead cable 7 and the internal sensor terminal 6 are soldered on the stator core, a cable lead frame 8 is provided at the bottom of the motor 1, and the sensor lead cable 7 The cable is led out from the cable lead-out frame 8, and a cable channel 9 and a clamping part 10 are provided inside the cable lead-out frame 8. The clamping part 10 includes a movable splint 11, a fixed splint 12 and a clamping bolt 13. Corresponding notches 14 are provided on the corresponding surfaces of the movable splint 11 and the fixed splint 12. The notch 14 is preferably semicircular in shape, and a corresponding semicircular rubber pad 35 is also provided on the notch 14. When the sensor lead-out cable 7 passes through the notch 14, it is stretched to prevent the sensor lead-out cable 7 from being too long inside the motor 1. Then, the sensor lead-out cable 7 is clamped by tightening the clamping bolt 13. The rubber pad 35 can prevent the sensor lead-out cable 7 from being damaged due to clamping. Clamping bolts 13 are installed at both ends of the movable splint 11. The clamping bolts 13 are connected to the cable lead-out frame 8 is inserted from the outside, passes through the two ends of the movable clamping plate 11 and is connected to the two sides of the fixed clamping plate 12. Rotating the clamping bolt 13 can reduce the distance between the movable clamping plate 11 and the fixed clamping plate 12, so that the slot 14 clamps the sensor lead-out cable 7 to maintain the tension state of the sensor lead-out cable 7. The upper part of the cable lead-out frame 8 is connected with a cable stretching frame 15, and the cable stretching frame 15 includes an upper connecting seat 16 and a lower connecting seat 17. A threaded rod 18 and a guide rod 19 are arranged between the upper connecting seat 16 and the lower connecting seat 17. A threaded slider 20 is sleeved on the threaded rod 18 and the guide rod 19. The threaded rod 18 is rotatably connected to the upper connecting seat 16 and the lower connecting seat 17 respectively through bearings. A driven bevel gear 22 is also installed at the bottom of the threaded rod 18, and a driving screw 23 extends into the cable pulling One end of the extension frame 15 is fixedly connected to an active bevel gear 21, and the active bevel gear 21 and the driven bevel gear 22 are meshed with each other. The sensor lead cable 7 passes through the lower connecting seat 17, passes through the threaded slider 20 and then passes through the upper connecting seat 16. The sensor lead cable 7 is tightly connected to the threaded slider. Specifically, three lead holes 24 are provided on the threaded slider, and each lead hole 24 has a structure that is narrow at the top and wide at the bottom. The sensor lead cable 7 passes through the bottom of the lead hole 24, and the channel diameter will become narrower and narrower when passing through the top. The extrusion force on the sensor lead cable 7 will become greater and greater. After the sensor lead cable 7 passes through the lead hole 24, it will be difficult to withdraw. When the threaded slider 20 moves upward, it will drive the sensor lead cable 7 to move upward, thereby stretching the sensor lead cable 7.

[0030] The operating principle of this embodiment is: after the sensor lead-out cable 7 is installed, the active bevel gear 21 and the driven bevel gear 22 are driven to rotate by rotating the drive screw 23, thereby driving the threaded rod 18 to rotate, so that the threaded slider 20 moves up, and the sensor lead-out cable 7 is stretched to avoid the part inside the motor 1 being too long. Then, the clamping bolt 13 is tightened, and the sensor lead-out cable 7 is clamped by the movable clamping plate 11 and the notch 14. After using it for a period of time, if the notch 14 becomes loose, unscrew the clamping bolt 13, rotate the drive screw 23 again, stretch the sensor lead-out cable 7 again, and then tighten the clamping bolt 13.

[0031] Example 2

[0032] This embodiment has the same parts as the embodiment 1, and the difference is that the structure in the junction box 2 is further improved. The junction box includes a shell 25 and an outer cover 26. A baffle 27 is provided in the middle of the shell 25. The shell 25 is divided into a collection chamber 28 and a circuit chamber 29 by the baffle. The collection chamber 28 can be placed in a corresponding collection device. A circuit board 30 is installed on the inner wall of the circuit chamber 29. A partition 31 is fixed on the outer side of the circuit board 30. A current transformer 32 is fixed on the partition 31. A protective connector is also provided at the bottom of the shell 25. The protective connector is provided at the bottom of the shell 25. The connector is composed of a hollow bolt 33 and a nut 34. The head of the hollow bolt 33 is located inside the shell 25. The bottom of the hollow bolt 33 is connected to the connecting seat 16. The nut 34 is located outside the shell 25 and is sleeved on the hollow bolt 33. The sensor lead-out cable 7 enters from the hollow bolt 33 at the bottom of the shell 25 and passes through the current transformer 32 to be connected to the corresponding collection device, meeting the need for convenient line output. The fixed current transformer 32 is fixedly arranged on the side of the partition 31 to increase the aesthetics. The overall structure is compact, reasonable and highly practical.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sensor lead wire installation structure, characterized in that: The invention comprises a motor (1), wherein a terminal box (2) is installed on the outer side of the motor (1), a rotating shaft (3) is installed inside the motor (1), a rotor core (4) is sleeved on the outer side of the rotating shaft (3), a stator core (5) is sleeved on the outer side of the rotor core (4), an internal sensor terminal (6) is installed on the stator core (5), the internal sensor terminal (6) is connected to a sensor lead-out cable (7), a cable lead-out frame (8) is provided at the bottom of the motor (1), a cable channel (9) and a clamping part (10) are provided inside the cable lead-out frame (8), the clamping part (10) comprises a movable clamping plate (11), a fixed clamping plate (12) and a clamping bolt (13), the movable clamping plate The movable splint (11) and the fixed splint (12) are provided with corresponding notches (14), and clamping bolts (13) are installed at both ends of the movable splint (11). The upper part of the cable lead-out frame (8) is connected to a cable stretching frame (15), and the cable stretching frame (15) includes an upper connecting seat (16) and a lower connecting seat (17). A threaded rod (18) and a guide rod (19) are provided between the upper connecting seat (16) and the lower connecting seat (17). A threaded slider (20) is sleeved on the threaded rod (18) and the guide rod (19). A driving member is installed at the bottom of the threaded rod (18). The sensor lead-out cable (7) is inserted from the lower connecting seat (17), passes through the threaded slider (20), and then passes out from the upper connecting seat (16). The sensor lead cable (7) is tightly connected to the threaded slider (20), the driving member comprises an active bevel gear (21), a driven bevel gear (22) and a driving screw (23), one end of the driving screw (23) extending into the cable stretching frame (15) is fixedly connected to the active bevel gear (21), the bottom of the threaded rod (18) is provided with a driven bevel gear (22), the active bevel gear (21) and the driven bevel gear (22) are meshed, the junction box (2) comprises a shell (25) and an outer cover (26), a baffle (27) is provided in the middle of the shell (25), the shell (25) is divided into a collection chamber (28) and a circuit chamber (29) by the baffle, and the inner side of the circuit chamber (29) A circuit board (30) is mounted on the wall, a partition (31) is fixed on the outer side of the circuit board (30), a current transformer (32) is fixed on the partition (31), the sensor lead cable (7) enters from the bottom of the shell (25) and passes through the current transformer (32), a protective connector is also provided at the bottom of the shell (25), the protective connector is composed of a hollow bolt (33) and a nut (34), the bottom of the hollow bolt (33) is connected to a connecting seat (16), the shell (25) and the outer shell (25) of the motor (1) are integrally formed, the notch (14) is semicircular, a rubber pad (35) is provided on the notch (14), and a support frame (36) is provided at the bottom of the front end of the motor (1).

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