Permanent magnet brushless motor integrated with driver

Abstract

The utility model provides a permanent magnet brushless motor integrated with a driver, which belongs to the technical field of brushless motors, and comprises a base, a shell fixed at the top end of the base, radiating fins fixed on the outer side of the shell, and a signal magnetic ring mounted on one side in the shell, the locking structure comprises a fixed shell fixed to one side of the rear end cover, a movable frame fixed to one end of the guide rod and auxiliary assemblies arranged at the two ends of the movable frame. According to the utility model, the telescopic spring pushes the friction pad to rub with the rotating shaft by simultaneously disconnecting the device and the electromagnet, so that the inertia of the rotating shaft is quickly eliminated, and the position of the rotating shaft is fixed, thereby realizing the quick braking function of the device, and being capable of quickly stopping the operation of the device and effectively protecting the personal and equipment safety when an accident occurs; furthermore, the equipment is prevented from being further damaged, the maintenance and replacement cost is reduced, and the safety of the device is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brushless motor technical field, concretely relates to a permanent magnet brushless motor of integrated driver. BACKGROUND

[0002] The permanent magnet brushless motor of integrated driver is an advanced motor technology, which combines the advantages of permanent magnet brushless motor and the control convenience of integrated driver, can accurately control current, realizes efficient and accurate operation of motor, is widely used in industrial automation, electric vehicles, household appliances and consumer electronics and other fields, promotes the technical progress and industrial upgrading of related fields.

[0003] A permanent magnet brushless motor of integrated driver is disclosed in a Chinese patent with publication number 202122928332.4, which includes a motor body mainly composed of a shaft, a front end cover, a casing, a rear end cover, and a stator. The shaft is rotatably mounted on the front end cover and the rear end cover at both ends. The shaft has a magnetized permanent magnet adhered to it, forming a rotor. The stator is wrapped around the rotor and fixed in the casing. The front end cover and the rear end cover are installed at both ends of the casing, respectively. The rear end cover is fixed with a front-end opening driver mounting shell. A groove for assembling the driver mainboard is opened on the inner wall of the driver mounting shell. The driver mainboard is inserted into the groove and fixed. The driver mounting shell tail cover has a gland. The motor power line and the driver control line are led out by the gland. The utility model installs the driver in the motor, forms a whole, can reduce the volume, reduces the parts, is convenient to install, and is easy to meet the requirements of explosion-proof, waterproof, etc.

[0004] The above-mentioned patent still has the following shortcomings: slow stop. Due to the structure of the permanent magnet brushless motor, it takes a long time to stop moving, which leads to the inability to stop the operation of the device quickly in situations such as machine failure or personnel safety being threatened, and easily leads to safety accidents. UTILITY MODEL CONTENTS

[0005] The utility model provides a permanent magnet brushless motor of integrated driver to solve the problems in the above background art.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0007] The utility model discloses an embodiment of a permanent magnet brushless motor of integrated driver, which comprises a base and further comprises:

[0008] The shell is fixed at the top end of the base, and the outer side of the shell is fixed with a cooling fin;

[0009] The front end cover is detachably installed on one side of the cooling fin;

[0010] A rear end cover is detachably mounted on the other side of the heat dissipation fin, and a rotating shaft is inserted in the interior of the rear end cover. A bearing is mounted between the rotating shaft and the rear end cover. A connecting spline is fixed to one side of the rotating shaft.

[0011] A stator is mounted in the interior of the shell, and a magnetic steel is mounted in the interior of the stator. A rotor is arranged in the interior of the magnetic steel and connected to the rotating shaft.

[0012] A driving plate is mounted on one side of the interior of the shell. A signal magnetic ring is mounted on one side of the interior of the shell.

[0013] A cooling structure is arranged in the interior of the rear end cover and used for cooling the interior of the device.

[0014] A locking structure is arranged on one side of the rear end cover. The locking structure comprises a fixed shell fixed on one side of the rear end cover, electromagnets mounted on both ends of the interior of the fixed shell, guide rods slidingly connected to both ends of the interior of the fixed shell, a moving frame fixed to one end of the guide rod, and auxiliary components arranged on both ends of the moving frame.

[0015] According to the above technical scheme, the rotating speed and power of the device are regulated by the driving plate. The interior of the device is cooled by the cooling structure. When an accident occurs, the locking structure can stop the rotation of the rotating shaft.

[0016] Further, the auxiliary components comprise a friction pad fixed to the inner wall of the moving frame, an extension spring mounted between the moving frame and the fixed shell, and an iron sheet fixed to one end of the moving frame.

[0017] According to the above technical scheme, the extension spring pushes the moving frame to move towards the rotating shaft by simultaneously disconnecting the power supply of the device and the electromagnets. The inertia of the rotating shaft is quickly eliminated by the friction between the friction pad and the rotating shaft. The position of the rotating shaft is fixed, and the device is braked in an emergency.

[0018] Further, the iron sheet and the electromagnet are located on the same vertical center line, and the guide rods are symmetrically distributed on the vertical center line of the electromagnet.

[0019] According to the above technical scheme, the iron sheet is aligned with the electromagnet, so that the electromagnet can attract the iron sheet to separate the friction pad from the rotating shaft.

[0020] Further, the surface of the friction pad is provided with a groove, and the friction pads are symmetrically distributed on the horizontal center line of the rotating shaft.

[0021] According to the above technical scheme, the surface of the friction pad is uneven due to the groove, thereby increasing the friction between the friction pad and the rotating shaft.

[0022] Further, the cooling structure comprises a fixed cover detachably mounted on one side of the rear end cover, a dust filter screen fixed in the fixed cover, heat conduction fins fixed on the inner side wall of the shell, heat pipes inserted in the heat conduction fins, heat conduction fins mounted on one side of the inner part of the shell and connected with the heat conduction fins, and fan blades fixed on the outer side wall of the rotating shaft.

[0023] By the above technical scheme, the fan blades are driven to rotate by the rotating shaft, so that air flows in the device, and heat in the device is quickly discharged; meanwhile, the dust filter screen prevents dust and foreign matters from entering the inside of the device, and the heat pipes and the heat conduction fins are used to dissipate heat from the back of the stator.

[0024] Further, the heat pipes are arranged in groups in the heat conduction fins, and the heat pipes in the groups are distributed at intervals in the heat conduction fins.

[0025] By the above technical scheme, the heat pipes are used to conduct heat from the back of the stator, so that the stator is less likely to be locally overheated.

[0026] The above scheme of the utility model has at least the following beneficial effects:

[0027] 1. The utility model discloses a device for quickly braking a rotating shaft, which comprises a shell, a rotating shaft rotatably arranged in the shell, a fan blade arranged on the outer side wall of the rotating shaft, a dust filter screen arranged on the outer side wall of the shell, a heat conduction fin arranged on the inner side wall of the shell, a heat pipe inserted in the heat conduction fin, an electromagnetic iron arranged on the inner part of the shell and connected with the heat pipe, and a telescopic spring arranged on the inner part of the shell and connected with the electromagnetic iron.

[0028] 2. The utility model discloses a device for quickly braking a rotating shaft, which comprises a shell, a rotating shaft rotatably arranged in the shell, a fan blade arranged on the outer side wall of the rotating shaft, a dust filter screen arranged on the outer side wall of the shell, a heat conduction fin arranged on the inner side wall of the shell, a heat pipe inserted in the heat conduction fin, an electromagnetic iron arranged on the inner part of the shell and connected with the heat pipe, and a telescopic spring arranged on the inner part of the shell and connected with the electromagnetic iron. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is a structural schematic view of the utility model;

[0030] Fig. 2 It is a structural schematic view of the utility model;

[0031] Fig. 3 It is a three-dimensional sectional structural schematic view of the cooling structure provided by the utility model;

[0032] Fig. 4 It is a three-dimensional sectional structural schematic view of the locking structure provided by the utility model.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1. Base; 2. Housing; 3. Front cover; 4. Connecting spline; 5. Heat sink; 6. Rear cover; 7. Cooling structure; 701. Fixing cover; 702. Dust filter; 703. Fan blade; 704. Heat-conducting fins; 705. Heat pipe; 706. Heat-conducting plate; 8. Locking structure; 801. Fixing shell; 802. Telescopic spring; 803. Guide rod; 804. Electromagnet; 805. Iron sheet; 806. Moving frame; 807. Friction pad; 9. Shaft; 10. Bearing; 11. Magnet; 12. Rotor; 13. Drive board; 14. Signal magnetic ring; 15. Stator. Detailed Implementation

[0035] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0036] like Figs. 1 to 4 As shown, an embodiment of this utility model provides a permanent magnet brushless motor with an integrated driver, including a base 1, and further comprising:

[0037] The outer casing 2 is fixed to the top of the base 1, and heat sinks 5 are fixed to the outer side of the outer casing 2.

[0038] The front cover 3 is detachably mounted on one side of the heat sink 5;

[0039] The rear end cover 6 is detachably installed on the other side of the heat sink 5, and a rotating shaft 9 is inserted inside the rear end cover 6. A bearing 10 is installed between the rotating shaft 9 and the rear end cover 6, and a connecting spline 4 is fixed on one side of the rotating shaft 9.

[0040] The stator 15 is installed inside the housing 2, and a magnet 11 is installed inside the stator 15. A rotor 12 connected to the rotating shaft 9 is arranged inside the magnet 11.

[0041] The drive board 13 is installed on one side inside the housing 2, and a signal magnetic ring 14 is installed on one side inside the housing 2.

[0042] Cooling structure 7 is located inside the rear cover 6 and is used to dissipate heat from the inside of the device;

[0043] The locking structure 8 is arranged on one side of the rear end cover 6, wherein the locking structure 8 comprises a fixed shell 801 fixed on one side of the rear end cover 6, electromagnets 804 mounted at both ends inside the fixed shell 801, guide rods 803 slidably connected inside both ends of the fixed shell 801, a moving frame 806 fixed on one end of the guide rod 803, and auxiliary assemblies arranged at both ends of the moving frame 806.

[0044] In the embodiment of the utility model, the device is installed at the use position, the connecting spline 4 is connected with the equipment through the connecting shaft, so as to drive the equipment, the rotation speed and power of the device are regulated through the driving plate 13, the internal part of the device is cooled through the cooling structure 7, and when an accident occurs, the locking structure 8 can stop the rotation of the rotating shaft 9.

[0045] As shown in Figs. 1 to 4 The auxiliary assembly comprises friction pads 807 fixed on the inner side walls of the moving frame 806, telescopic springs 802 mounted between the moving frame 806 and the fixed shell 801, and iron sheets 805 fixed on one end of the moving frame 806, the iron sheets 805 are located on the same vertical center line as the electromagnets 804, the guide rods 803 are symmetrically distributed on the vertical center line of the electromagnets 804, grooves are formed in the surfaces of the friction pads 807, and the friction pads 807 are symmetrically distributed on the horizontal center line of the rotating shaft 9.

[0046] In the embodiment of the utility model, when normally used, the electromagnets 804 are electrified to generate magnetic force, the iron sheets 805 generate magnetic force and attract the iron sheets 805, the iron sheets 805 drive the moving frame 806 to move and separate the friction pads 807 from the rotating shaft 9, and the moving frame 806 extrudes and deforms the telescopic springs 802, when an accident occurs, the external equipment can disconnect the device from the electromagnets 804 through the driving plate 13, the electromagnets 804 eliminate the magnetic force, the telescopic springs 802 that are compressed push the moving frame 806 to move towards the rotating shaft 9, the friction pads 807 contact the rotating shaft 9, the inertia of the rotating shaft 9 is quickly eliminated through the friction between the friction pads 807 and the rotating shaft 9, the position of the rotating shaft 9 is fixed, and the device is urgently braked.

[0047] As shown in Figs. 1 to 3 The cooling structure 7 comprises a fixed cover 701 detachably mounted on one side of the rear end cover 6, a dust filter screen 702 fixed in the fixed cover 701, heat-conducting fins 706 fixed on the inner side walls of the shell 2, heat pipes 705 inserted in the heat-conducting fins 706, heat-conducting fins 704 mounted on one side of the shell 2 and connected with the heat-conducting fins 704, and fan blades 703 fixed on the outer side walls of the rotating shaft 9, the heat pipes 705 are arranged in several groups in the heat-conducting fins 706, and the several groups of heat pipes 705 are distributed at intervals in the heat-conducting fins 706.

[0048] In the embodiment of the utility model, when the device rotates, the shaft 9 drives the fan blade 703 to rotate, the fan blade 703 sucks the air outside into the inside of the device, and the air is discharged through the front end cover 3, the air flows in the inside of the device, the heat in the inside of the device is discharged quickly, the dust filter screen 702 filters the air entering, dust and foreign matters are not easy to enter the inside of the device, the back of the stator 15 is radiated through the heat conduction fin 706 and the heat pipe 705, the heat of the device is distributed uniformly, the contact area of the heat pipe 705 and the air is increased through the heat conduction fin 704, and the heat dissipation effect of the heat pipe 705 is improved.

[0049] The above is the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the utility model.

Claims

1. An integrated drive permanent magnet brushless electric machine comprising a base (1), characterized in that, Also include: The shell (2) is fixed at the top end of the base (1), and the outer side of the shell (2) is fixed with a fin (5); Front end cover (3), detachable installation in one side of the fin (5); The rear end cover (6) is detachably mounted on the other side of the fin (5), and the inside of the rear end cover (6) is inserted with a rotating shaft (9), the rotating shaft (9) and the rear end cover (6) are installed with a bearing (10), one side of the rotating shaft (9) is fixed with a connecting spline (4); Stator (15), installed in the inside of the shell (2), and the inside of the stator (15) is installed with a magnetic steel (11), the inside of the magnetic steel (11) is provided with a rotor (12) connected with the rotating shaft (9); Drive plate (13), installed in one side of the inside of the shell (2), one side of the inside of the shell (2) is installed with a signal magnetic ring (14); Cooling structure (7), provided in the inside of the rear end cover (6), for cooling the inside of the device; Locking structure (8) is arranged on one side of the rear end cover (6), wherein the locking structure (8) comprises a fixed shell (801) fixed on one side of the rear end cover (6), an electromagnet (804) installed in the inside of the fixed shell (801), a guide rod (803) slidingly connected in the inside of the both ends of the fixed shell (801), a moving frame (806) fixed on one end of the guide rod (803), and an auxiliary assembly arranged on both ends of the moving frame (806).

2. The integrated driver permanent magnet brushless motor of claim 1, wherein, The auxiliary assembly comprises a friction pad (807) fixed on the inner side wall of the moving frame (806), a telescopic spring (802) installed between the moving frame (806) and the fixed shell (801), and an iron sheet (805) fixed on one end of the moving frame (806).

3. The integrated driver permanent magnet brushless motor of claim 2, wherein, The iron sheet (805) and the electromagnet (804) are located on the same vertical center line, and the guide rod (803) is symmetrically distributed on the vertical center line of the electromagnet (804).

4. The integrated driver permanent magnet brushless motor of claim 2, wherein, The surface of the friction pad (807) is provided with a groove, and the friction pad (807) is symmetrically distributed on the horizontal center line of the rotating shaft (9).

5. The integrated driver permanent magnet brushless motor of claim 1, wherein, The cooling structure (7) comprises a fixed cover (701) detachably mounted on one side of the rear end cover (6), a dust filter net (702) fixed in the inside of the fixed cover (701), a heat dissipation fin (706) fixed on the inner side wall of the shell (2), a heat pipe (705) inserted in the inside of the heat dissipation fin (706), a heat dissipation fin (704) installed on one side of the inside of the shell (2) and connected with the heat dissipation fin (704), and a fan blade (703) fixed on the outer side wall of the rotating shaft (9).

6. The integrated driver permanent magnet brushless motor of claim 5, wherein, The heat pipe (705) is provided with several groups in the inside of the heat dissipation fin (706), and the several groups of heat pipes (705) are distributed at intervals in the inside of the heat dissipation fin (706).

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