Inductance type encoder integrated motor

Abstract

The utility model discloses an inductance type encoder integrated motor, which comprises a shell, a rotating shaft rotationally arranged in the middle of the inner side of the shell, a rotor arranged on the outer side of the rotating shaft and a stator arranged on the outer side of the rotor, and a driver is arranged at the tail end of the outer side of the shell; an inductance type encoder assembly is arranged on the inner side of the shell and comprises an encoder induction rotor arranged at the tail end of the rotating shaft, an inductance type excitation coil integrated to a stator coil through a PCB and a receiving coil arranged on a stator. According to the inductance type encoder integrated motor, the inductance type exciting coil is integrated on the stator coil through the PCB and coupled to the receiving coil through a high-frequency electromagnetic field, the encoder induction rotor is installed at the tail end of the rotating shaft, and when the encoder induction rotor rotates, the encoder induction rotor generates the electromagnetic field due to the eddy current effect; therefore, the electromagnetic field intensity of the receiving coil is influenced, the cost is reduced, the precision is higher, and the motor length is reduced.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to an inductive encoder integrated motor. Background Art

[0002] In traditional motor designs, encoders are typically installed as separate components outside the motor or on the motor shaft to measure the motor's rotation angle. However, this design not only increases the overall length and cost of the motor but can also affect measurement accuracy due to inaccurate mounting. Furthermore, traditional encoders often use discrete components for the excitation and receiving coils, resulting in complex circuits and low integration, hindering overall motor performance and cost reduction.

[0003] Furthermore, existing motor cooling fans often have exposed air vents at the rear end. While this design effectively dissipates heat, it allows dust and impurities to enter the motor through these exposed vents when the motor is not in use, contaminating and damaging it, ultimately impacting its lifespan and performance stability.

[0004] Therefore, it is necessary to propose an inductive encoder integrated motor to solve the above problems. Utility Model Content

[0005] The main purpose of the present invention is to provide an inductive encoder integrated motor, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An inductive encoder integrated motor comprises a housing, a rotating shaft rotatably arranged in the middle of the inner side of the housing, a rotor arranged outside the rotating shaft, and a stator arranged outside the rotor, wherein a driver is arranged at the outer end of the housing;

[0008] An inductive encoder assembly is provided on the inside of the shell, and the inductive encoder assembly includes an encoder induction rotor arranged at the tail end of the rotating shaft, an inductive excitation coil integrated into the stator coil through a PCB board, and a receiving coil arranged on the stator, and the high-frequency electromagnetic field generated by the inductive excitation coil is coupled with the receiving coil.

[0009] Preferably, the rotating shaft is rotatably connected to the inner side of the housing through a bearing, one end of the rotating shaft protrudes from the front end of the housing, and the protruding part is the output end;

[0010] The encoder sensing rotor is located at the end of the rotating shaft away from the output end;

[0011] The driver is located outside the housing and close to one end of the encoder sensing rotor.

[0012] Preferably, a heat dissipation component is also included, which includes an air inlet arranged on the front side wall of the shell and connected to the interior of the shell, the rear end of the rotating shaft extends to the rear end outside of the shell and is provided with fan blades, and the rear end side wall of the shell is provided with an air outlet.

[0013] Preferably, the rear end of the shell is provided with a dustproof component, the dustproof component includes a heat dissipation cylinder fixedly arranged on the outer side wall of the rear end of the shell, the outer movable sleeve of the heat dissipation cylinder is provided with a heat dissipation shell, the circumferential side wall of the heat dissipation shell is evenly provided with a second heat dissipation outlet, the circumferential side wall of the heat dissipation cylinder is evenly provided with a first heat dissipation outlet, and the first heat dissipation outlet and the second heat dissipation outlet are spaced apart, and an elastic part is provided between the outer inner wall of the heat dissipation shell and the outer side wall of the rear end of the shell.

[0014] Preferably, the elastic member is a spring.

[0015] Preferably, a limiting flange is provided on the outer side of one end of the heat dissipation cylinder away from the shell, and an annular limiting recess is provided on the inner periphery of the heat dissipation shell and is slidably connected to the limiting flange.

[0016] Preferably, a conical guide plate is provided on one end of the inner side of the heat dissipation shell away from the shell body.

[0017] Preferably, a dustproof net is provided in the air inlet. Beneficial effects

[0018] Compared with the prior art, the present invention provides an integrated motor with an inductive encoder, which has the following beneficial effects:

[0019] This inductive encoder integrated motor integrates the inductive excitation coil onto the stator coil via a PCB board, couples it to the receiving coil via a high-frequency electromagnetic field, and mounts the encoder sensing rotor at the tail end of the shaft. When the encoder sensing rotor rotates, it generates an electromagnetic field due to the eddy current effect, thereby affecting the electromagnetic field strength of the receiving coil and causing the signal amplitude or phase of the differential receiving coil to change. The decoding circuit achieves precise angle measurement through amplification, acquisition, resolution, and correction. The high degree of integration can reduce costs, achieve higher accuracy, and shorten motor length. Mounting the driver at the tail end of the housing can reduce wiring costs and save installation space.

[0020] The inductive encoder integrated motor can dissipate heat when the motor is working by means of a heat dissipation component and a dustproof component. When the motor stops working, the air outlet at the rear end of the housing can be automatically closed to prevent dust from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model in a disassembled state;

[0024] Figure 4 This utility model Figure 3 A structural diagram from another perspective based on the above;

[0025] Figure 5 This is a schematic diagram of the specific structure of the disassembly of the heat dissipation shell and the heat dissipation cylinder of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the heat dissipation shell of the utility model.

[0027] In the figure: 1. Shell; 2. Rotating shaft; 3. Air inlet; 4. Driver; 5. Heat dissipation shell; 6. Stator; 7. Rotor; 8. Encoder sensing rotor; 9. Heat dissipation cylinder; 10. First heat dissipation outlet; 11. Second heat dissipation outlet; 12. Fan blades; 13. Limiting flange; 14. Elastic member; 15. Conical guide plate; 16. Annular limiting recess; 17. Air outlet. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figure 1-6 As shown, an inductive encoder integrated motor includes a housing 1, a rotating shaft 2 rotatably disposed in the middle of the inner side of the housing 1, a rotor 7 disposed outside the rotating shaft 2, and a stator 6 disposed outside the rotor 7. A driver 4 is disposed at the outer end of the housing 1. The rotating shaft 2 is rotatably connected to the inner side of the housing 1 via a bearing. One end of the rotating shaft 2 protrudes from the front end of the housing 1, and the protruding portion is the output end.

[0030] An inductive encoder assembly is provided on the inside of the shell 1. The inductive encoder assembly includes an encoder induction rotor 8 provided at the tail end of the rotating shaft 2, an inductive excitation coil integrated into the stator 6 coil through a PCB board, and a receiving coil provided on the stator 6. The high-frequency electromagnetic field generated by the inductive excitation coil is coupled with the receiving coil. Specifically, the encoder induction rotor 8 is located at the end of the rotating shaft 2 away from the output end, and the driver 4 is located on the outside of the shell 1 close to the end of the encoder induction rotor 8.

[0031] It should be noted that the above-mentioned PCB board, inductive excitation coil, and receiving coil are all shown in detail in the figure, and are all conventional means, so there is no excessive elaboration.

[0032] It also includes a heat dissipation component, which includes an air inlet 3 arranged on the front end side wall of the shell 1 and connected to the interior of the shell 1. A dust net is detachably provided in the air inlet 3. The rear end of the rotating shaft 2 extends to the rear end outside of the shell 1 and is provided with fan blades 12. The rear end side wall of the shell 1 is provided with an air outlet 17.

[0033] Furthermore, a dustproof component is provided at the rear end of the shell 1, and the dustproof component includes a heat dissipation cylinder 9 fixedly arranged on the outer side wall of the rear end of the shell 1, and a heat dissipation shell 5 is movably provided on the outer side of the heat dissipation cylinder 9. The circumferential side walls of the heat dissipation shell 5 are evenly provided with second heat dissipation outlets 11, and the circumferential side walls of the heat dissipation cylinder 9 are evenly provided with first heat dissipation outlets 10, and the first heat dissipation outlets 10 and the second heat dissipation outlets 11 are spaced apart. An elastic member 14 is provided between the outer inner wall of the heat dissipation shell 5 and the outer side wall of the rear end of the shell 1, and the elastic member 14 is preferably a spring.

[0034] In order to prevent it from falling off, a limiting flange 13 is provided on the outer side of the end of the heat dissipation cylinder 9 away from the shell 1 , and an annular limiting recess 16 is provided on the inner periphery of the heat dissipation shell 5 and is slidably connected to the limiting flange 13 .

[0035] In order to guide the airflow, a conical guide plate 15 is provided on the inner side of the heat dissipation shell 5 at one end away from the housing 1 .

[0036] It should be noted that the present invention is an integrated motor with an inductive encoder. When in use, the inductive excitation coil is integrated into the stator 6 coil through a PCB board, and is coupled to the receiving coil through a high-frequency electromagnetic field. The encoder induction rotor 8 is installed at the tail end of the rotating shaft 2. When the encoder induction rotor 8 rotates, the encoder induction rotor 8 generates an electromagnetic field due to the eddy current effect, thereby affecting the electromagnetic field strength of the receiving coil, causing the signal amplitude or phase of the differential receiving coil to change. The decoding circuit finally achieves accurate angle measurement through procedures such as amplification, acquisition, solution, and correction. After high integration, cost reduction, higher accuracy, and reduced motor length can be achieved. In addition, the driver 4 is installed at the tail end of the housing 1, which can reduce wiring costs and save installation space.

[0037] In addition, the heat dissipation component is set in conjunction with the dust-proof component to dissipate heat when the motor is working. When the motor stops working, the air outlet 17 at the rear end of the shell 1 can be automatically closed to prevent dust from entering. Specifically, when the rotating shaft 2 rotates, the fan blades 12 will be driven to rotate, and then the fan blades 12 will draw out the hot air inside the shell 1 through the air outlet 17, and the outside air enters through the air inlet 3 for heat exchange. The pressure in the heat dissipation shell 5 and the heat dissipation cylinder 9 increases, pushing the heat dissipation shell 5 to move, and the elastic part 14 is stretched, and then the first heat dissipation outlet 10 and the second heat dissipation outlet 11 are exposed, and the hot air is discharged. The conical guide plate 15 can guide the hot air, and the annular limiting recess 16 and the limiting flange 13 can prevent the heat dissipation shell 5 from being separated from the heat dissipation cylinder 9. When the motor stops working, the elastic part 14 will automatically reset and drive the heat dissipation shell 5 to close, so that the first heat dissipation outlet 10 and the second heat dissipation outlet 11 are closed to prevent dust.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An inductive encoder integrated motor, comprising a housing (1), a rotating shaft (2) rotatably arranged in the middle of the inner side of the housing (1), a rotor (7) arranged outside the rotating shaft (2), and a stator (6) arranged outside the rotor (7), characterized in that: A driver (4) is provided at the outer rear end of the housing (1); An inductive encoder assembly is provided inside the housing (1), the inductive encoder assembly comprising an encoder induction rotor (8) provided at the tail end of the rotating shaft (2), an inductive excitation coil integrated onto the stator (6) coil via a PCB board, and a receiving coil provided on the stator (6), wherein a high-frequency electromagnetic field generated by the inductive excitation coil is coupled with the receiving coil.

2. The inductive encoder integrated motor according to claim 1, characterized in that: The rotating shaft (2) is rotatably connected to the inner side of the housing (1) via a bearing, one end of the rotating shaft (2) protrudes from the front end of the housing (1), and the protruding portion is the output end; The encoder sensing rotor (8) is located at an end of the rotating shaft (2) away from the output end; The driver (4) is located outside the housing (1) at one end close to the encoder induction rotor (8).

3. The inductive encoder integrated motor according to claim 1, characterized in that: The heat dissipation assembly further comprises an air inlet (3) provided on the front side wall of the housing (1) and communicating with the interior of the housing (1); the rear end of the rotating shaft (2) extends to the rear end outside of the housing (1) and is provided with fan blades (12); and the rear end side wall of the housing (1) is provided with an air outlet (17).

4. The inductive encoder integrated motor according to claim 3, characterized in that: The rear end of the shell (1) is provided with a dustproof component, which includes a heat dissipation cylinder (9) fixedly arranged on the outer side wall of the rear end of the shell (1), a heat dissipation shell (5) is movably sleeved on the outer side of the heat dissipation cylinder (9), and the circumferential side wall of the heat dissipation shell (5) is evenly provided with a second heat dissipation outlet (11), and the circumferential side wall of the heat dissipation cylinder (9) is evenly provided with a first heat dissipation outlet (10), and the first heat dissipation outlet (10) and the second heat dissipation outlet (11) are spaced apart, and an elastic member (14) is provided between the outer inner wall of the heat dissipation shell (5) and the rear end outer side wall of the shell (1).

5. The inductive encoder integrated motor according to claim 4, characterized in that: The elastic member (14) is a spring.

6. The inductive encoder integrated motor according to claim 4, characterized in that: A limiting flange (13) is provided on the outer side of one end of the heat dissipation cylinder (9) away from the shell (1), and an annular limiting recess (16) is provided on the inner periphery of the heat dissipation shell (5) and is slidably connected to the limiting flange (13).

7. The inductive encoder integrated motor according to claim 4, characterized in that: A conical guide plate (15) is provided at one end of the inner side of the heat dissipation shell (5) away from the housing (1).

8. The inductive encoder integrated motor according to claim 3, characterized in that: A dustproof net is provided in the air inlet (3).

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