Industrial-grade servo motor position sensor

Abstract

The utility model relates to the technical field of servo motors, and discloses an industrial-grade servo motor position sensor, which comprises a stator disc arranged in a servo motor, a rotor rotatably arranged in the center of the interior of the stator disc, a magnetic core arranged on the outer side of the stator disc, a winding arranged on the outer side of the magnetic core, and a magnetic core arranged on the outer side of the winding. The end part of the stator disc is provided with a circuit board, the circuit board is welded and connected with an electrode pin, the end part of the electrode pin is electrically connected with a magnetic induction unit, the end part of the outer side of the stator disc is fixedly connected with a guide mechanism, and the guide mechanism and the magnetic induction unit are arranged correspondingly; according to the novel position sensor applied to the industrial-grade servo motor, the first clamping plate and the second clamping plate are arranged, the first clamping plate and the second clamping plate are located on the two sides of the stator disc, cover the welding positions of the electrode pins and are connected and fixed through the fixing screw rods, so that the welding positions of the electrode pins are prevented from falling off, and the use stability of the motor is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of servo motors, in particular to an industrial-grade servo motor position sensor. Background Art

[0002] The servo motor can control the rotation speed and position of the shaft according to actual needs. When in use, it is driven by a driver and the position of the rotor is detected by an internal position sensor to achieve precise rotation.

[0003] However, the position sensor used in the traditional servo motor is mainly used to detect the position of the motor rotor. It usually includes encoders, Hall sensors, photoelectric sensors, etc., and the speed and accuracy are controlled by encoding. When the Hall sensor is working, the side with the word mark is the front side, and the three electrode pins from left to right are divided into positive and negative poles and output ends. They are fixed on the control board by welding. As a result, the servo motor has the following problems when in use:

[0004] 1. The electrode feet are prone to loosening during long-term shaking, which in turn affects the operating accuracy of the servo motor.

[0005] 2. The Hall sensor generates heat due to the electromagnetic effect when in use. High heat will affect the working efficiency of the Hall sensor.

[0006] 3. The position of the magnetic sensing unit of the Hall sensor is determined according to the installation position of the electrode pin. Therefore, when the electrode pin is long, it will shake during use, affecting the magnetic sensing effect of the magnetic sensing unit.

[0007] In order to solve the above problems, this application proposes an industrial-grade servo motor position sensor. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model provides an industrial-grade servo motor position sensor to at least solve one of the problems raised by the background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an industrial-grade servo motor position sensor, comprising a stator disk installed in a servo motor, a rotor rotatably arranged at the inner center of the stator disk, a magnetic core arranged on the outer side of the stator disk, a winding arranged on the outer side of the magnetic core, a circuit board arranged on the end of the stator disk, an electrode foot welded and connected to the circuit board, the end of the electrode foot is electrically connected to a magnetic sensing unit, a guide mechanism is fixedly connected to the outer end of the stator disk, the guide mechanism is arranged corresponding to the position of the magnetic sensing unit, and a stabilizing mechanism is arranged at the lower end of the guide mechanism, the stabilizing mechanism comprises a first clamping plate, a fixing screw is passed through the first clamping plate, and the other end of the fixing screw is threadedly connected to a second clamping plate, the first clamping plate and the second clamping plate are arranged on both sides of the stator disk, and the first clamping plate and the second clamping plate are pressed at the welding position of the electrode foot.

[0010] A further technical improvement of the utility model is that the guide mechanism comprises a fixed block, a through hole is formed on the fixed block, a cross section of the through hole from top to bottom is inclined, and a side close to the magnetic sensing unit is narrow.

[0011] A further technical improvement of the utility model is that a support block is vertically fixed in the through hole, a movable plate is slidably connected to the support block, a clamping block is fixedly connected to the end of the movable plate, a resist plate is fixedly connected to the other end of the movable plate, the resist plate is arranged in the through hole, the clamping block is matched and clamped with the end of the magnetic sensing unit, a pad is fixedly connected to the movable plate, a fixing screw is also threadedly connected in the pad, and the end of the fixing screw is arranged to resist the support block.

[0012] A further technical improvement of the utility model is that expansion plates are fixedly connected to both sides of one end of the fixed block close to the magnetic sensing unit, and the expansion plates are symmetrically arranged.

[0013] A further technical improvement of the utility model is that the support block is arranged at the middle position of the through hole, and the width of the support block is smaller than the spacing between the inner side walls of the through hole.

[0014] A further technical improvement of the utility model is that the expansion plate is arranged obliquely, and the far end of the expansion plate is arranged outside the two ends of the magnetic sensing unit.

[0015] A further technical improvement of the utility model is that a gasket is fixedly connected to one side of the first clamping plate and the second clamping plate close to the stator disk, and the gasket is a rubber sheet, which is insulating.

[0016] According to the industrial-grade servo motor position sensor described in claim, it is characterized in that the through-hole is opened in a stepped shape, and the through-hole where the abutment plate is located is arranged in a plane.

[0017] The present invention provides an industrial-grade servo motor position sensor, which has the following beneficial effects:

[0018] 1. This new type is applied to industrial-grade servo motor position sensors. The first clamping plate and the second clamping plate are arranged on both sides of the stator disk and cover the welding part of the electrode feet. The first clamping plate and the second clamping plate are connected and fixed by fixing screws, so as to prevent the welding part of the electrode feet from falling off and ensure the stability of the motor.

[0019] 2. This new type is applied to industrial-grade servo motor position sensors. By setting fixed blocks and perforations, the air flow generated by the rotor inside the motor when it rotates can be directed to the magnetic sensing unit through the perforations. The heat on the surface of the magnetic sensing unit is dissipated through the air flow, thereby improving the heat dissipation effect of the magnetic sensing unit.

[0020] 3. This new type of position sensor is used for industrial-grade servo motors. By setting a moving plate and a card block, the card block is pressed on the magnetic sensing unit. According to the different upper and lower positions of the magnetic sensing unit, the moving plate is moved up and down to press the magnetic sensing unit, so that the magnetic sensing unit can be stably and firmly connected to the stator disk, thereby improving the stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the stator disc, electrode feet and magnetic sensing unit of the utility model;

[0024] Figure 3 This is a schematic diagram of the stator disk, magnetic core and winding structure of the utility model;

[0025] Figure 4 for Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 5 It is a schematic diagram of the guide mechanism, the first clamping plate and the second clamping plate structure of the utility model.

[0027] In the figure: 1. stator disk; 2. rotor; 3. magnetic core; 4. winding; 5. electrode foot; 6. magnetic sensing unit; 7. fixing block; 8. perforation; 9. support block; 10. moving plate; 11. clamping block; 12. pad; 13. fixing screw; 14. extension plate; 15. abutment plate; 16. first clamping plate; 17. second clamping plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: an industrial-grade servo motor position sensor, comprising a stator disk 1 installed in a servo motor, a rotor 2 rotatably arranged at the inner center of the stator disk 1, a magnetic core 3 arranged on the outer side of the stator disk 1, a winding 4 arranged on the outer side of the magnetic core 3, a circuit board arranged at the end of the stator disk 1, an electrode foot 5 welded and connected to the circuit board, an end of the electrode foot 5 electrically connected to a magnetic sensing unit 6, a guide mechanism fixedly connected to the outer end of the stator disk 1, the guide mechanism and the magnetic sensing unit 6 are arranged in a corresponding position, and a stabilizing mechanism is arranged at the lower end of the guide mechanism, the stabilizing mechanism comprises a first clamping plate 16, a fixing screw 13 is passed through the first clamping plate 16, and the other end of the fixing screw 13 is threadedly connected to a second clamping plate 17, the first clamping plate 16 and the second clamping plate 17 are arranged on both sides of the stator disk 1, and the first clamping plate 16 and the second clamping plate 17 are pressed The welding position of the electrode foot 5 is set; a circuit board is set on the stator disk 1, and the Hall position sensor is mainly composed of the electrode foot 5 and the magnetic sensing unit 6. The magnetic sensing unit 6 can locate the rotation position of the rotor 2, and the guide mechanism set on the outer side of the stator disk 1 can guide the magnetic sensing unit 6 through the air flow generated inside the motor housing when the rotor 2 rotates, and then the magnetic sensing unit 6 is guided by the internal air flow to dissipate the surface of the magnetic sensing unit 6. At the same time, a first clamping plate 16 and a second clamping plate 17 are set at the lower end of the guide mechanism, and the first clamping plate 16 and the second clamping plate 17 are connected by fixing screws 13 on both sides of the upper end. The first clamping plate 16 and the second clamping plate 17 are located at the welding position of the electrode foot 5 and cover it. The first clamping plate 16 and the second clamping plate 17 can prevent the electrode foot 5 from falling off at the welding position by the first clamping plate 16 and the second clamping plate 17, and prevent the vibration during the rotation of the motor from affecting the fixed connection of the electrode foot 5.

[0030] like Figure 5 As shown, the guide mechanism includes a fixed block 7, a through hole 8 is provided on the fixed block 7, the cross section of the through hole 8 from top to bottom is inclined, and the side close to the magnetic sensing unit 6 is a narrow opening; the fixed block 7 is provided with a through hole 8, the outer side of the through hole 8 is expanded, and the inner side of the through hole 8 is narrow opening. By guiding the wind from the large opening to the small opening, the internal air dissipates the heat on the surface of the magnetic sensing unit 6, the air flow speed on the surface of the magnetic sensing unit 6 is increased, and the heat dissipation is increased.

[0031] like Figure 4 and Figure 5 As shown, a support block 9 is vertically fixed in the through hole 8, a movable plate 10 is slidably connected to the support block 9, a clamping block 11 is fixedly connected to the end of the movable plate 10, and a butt plate 15 is fixedly connected to the other end of the movable plate 10, the butt plate 15 is arranged in the through hole 8, the clamping block 11 is matched with the end of the magnetic sensing unit 6, a pad 12 is fixedly connected to the movable plate 10, a fixing screw 13 is also threadedly connected in the pad 12, and the end of the fixing screw 13 is set against the support block 9, the movable plate 10 slides up and down on the support block 9, and the movable plate 10 A butt plate 15 is fixed to the outer end, and the butt plate 15 is arranged on the inner side of the through hole 8. The butt plate 15 provides a supporting force, and the rotation of the fixing screw 13 drives the butt plate 15 to approach the inner wall of the through hole 8. The fixing screw 13 abuts against the pad 12, and the block 11 at the end of the movable plate 10 close to the magnetic sensing unit 6 is engaged with the magnetic sensing unit 6. The movable plate 10 can be adjusted up and down according to the different heights of the magnetic sensing unit 6, so that the block 11 is in contact with the magnetic sensing unit 6, so as to prevent the magnetic sensing unit 6 from shaking during use, thereby affecting the position rotation accuracy of the servo motor.

[0032] As shown in the figure, the fixed block 7 is fixedly connected to the expansion plates 14 on both sides of one end close to the magnetic sensing unit 6, and the expansion plates 14 are symmetrically arranged; after the air flow inside the motor passes through the narrow opening of the perforation 8, the range of the air flow can be diffused through the expansion plates 14, and then the entire surface of the magnetic sensing unit 6 can achieve effective air flow through the air flow, thereby achieving the effect of heat dissipation.

[0033] As shown in the figure, the support block 9 is arranged in the middle position of the perforation 8, and the width of the support block 9 is smaller than the spacing between the inner walls of the perforation 8; the support block 9 is arranged in the middle to facilitate the air to pass through from both sides of the perforation 8, thereby increasing the rate at which the air passes through the perforation 8; the extension plate 14 is arranged at an angle, and the distal ends of the extension plate 14 are arranged outside the two ends of the magnetic sensing unit 6; the inclined extension plate 14 achieves a better coverage range, and the distal ends of the extension plate 14 are arranged outside the two ends of the magnetic sensing unit 6, and the range of air flow is wider; the first clamping plate 16 and the second clamping plate 17 are fixedly connected to a gasket on one side close to the stator disk 1, and the gasket is arranged as a rubber sheet, which is insulating and is covered at the welding position of the electrode foot 5. The rubber sheet has elasticity and can wrap the welding position, and the rubber sheet is arranged to be insulating, which can avoid the skewness of the electrode feet 5 on both sides and short circuit.

[0034] like Figure 4 As shown, the perforation 8 is opened in a stepped shape, and the abutment plate 15 is located at the perforation 8 in a flat manner, and the position of the abutment plate 15 located on the inner side of the perforation 8 is also in a flat manner. In this way, the abutment plate 15 can contact the perforation 8 more stably, thereby achieving a better connection and fixing effect. The stepped setting is to allow the air to be accurately guided during the flow process to improve the heat dissipation effect.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An industrial-grade servo motor position sensor, comprising a stator disk (1) installed in a servo motor, a rotor (2) rotatably arranged at the inner center of the stator disk (1), a magnetic core (3) arranged on the outer side of the stator disk (1), a winding (4) arranged on the outer side of the magnetic core (3), a circuit board arranged at the end of the stator disk (1), an electrode foot (5) welded to the circuit board, and an end of the electrode foot (5) electrically connected to a magnetic sensing unit (6), characterized in that: The outer end of the stator disk (1) is fixedly connected to a guide mechanism, the guide mechanism is arranged corresponding to the position of the magnetic sensing unit (6), and a stabilizing mechanism is arranged at the lower end of the guide mechanism, the stabilizing mechanism comprises a first clamping plate (16), a fixing screw (13) is passed through the first clamping plate (16), and the other end of the fixing screw (13) is threadedly connected to a second clamping plate (17), the first clamping plate (16) and the second clamping plate (17) are arranged on both sides of the stator disk (1), and the first clamping plate (16) and the second clamping plate (17) are pressed on the welding position of the electrode foot (5).

2. An industrial-grade servo motor position sensor according to claim 1, characterized in that: The guide mechanism comprises a fixed block (7), a through hole (8) is provided on the fixed block (7), the cross section of the through hole (8) from top to bottom is inclined, and the side close to the magnetic sensing unit (6) is narrow.

3. An industrial-grade servo motor position sensor according to claim 2, characterized in that: A support block (9) is vertically fixed in the through hole (8), a movable plate (10) is slidably connected to the support block (9), a clamping block (11) is fixedly connected to the end of the movable plate (10), a butt plate (15) is fixedly connected to the other end of the movable plate (10), the butt plate (15) is arranged in the through hole (8), the clamping block (11) is matched and clamped with the end of the magnetic sensing unit (6), a pad (12) is fixedly connected to the movable plate (10), a fixing screw (13) is also threadedly connected to the pad (12), and the end of the fixing screw (13) is arranged to butt against the support block (9).

4. The industrial-grade servo motor position sensor according to claim 2, characterized in that: Extension plates (14) are fixedly connected to both sides of one end of the fixed block (7) close to the magnetic sensing unit (6), and the extension plates (14) are symmetrically arranged.

5. The industrial-grade servo motor position sensor according to claim 3, characterized in that: The support block (9) is arranged at the middle position of the through hole (8), and the width of the support block (9) is smaller than the spacing between the inner side walls of the through hole (8).

6. The industrial-grade servo motor position sensor according to claim 4, characterized in that: The expansion plate (14) is arranged obliquely, and the distal end of the expansion plate (14) is arranged outside two ends of the magnetic sensing unit (6).

7. The industrial-grade servo motor position sensor according to claim 1, characterized in that: A gasket is fixedly connected to one side of the first clamping plate (16) and the second clamping plate (17) close to the stator disk (1), and the gasket is a rubber sheet that is insulating.

8. The industrial-grade servo motor position sensor according to claim 5, characterized in that: The through hole (8) is opened in a stepped shape, and the abutment plate (15) is arranged in a plane at the position where the through hole (8) is located.

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