Direct current brushless motor casing

Abstract

The utility model discloses a direct current brushless motor casing, which comprises a casing, a metal foil and a heat dissipation copper pipe, the inner wall of the casing is provided with the metal foil, the bottom of the outer surface of the casing is connected with a hinge, the top of the outer surface of the casing is provided with a connecting structure, the inner wall of the metal foil is provided with the heat dissipation copper pipe, and the heat dissipation copper pipe is connected with the hinge. One side of the heat dissipation copper pipe is connected with a connecting pipe, one side of the connecting pipe is connected with a miniature water pump, an annular coil holder is arranged in the metal foil, one side of the annular coil holder is connected with a supporting sleeve, a stator iron core is arranged on the outer surface of the supporting sleeve, and a magnetic ring is arranged on one side of the supporting sleeve. The metal foil and the heat dissipation copper pipe are arranged in the left-right combined casing, the left-right combination enables the casing to be convenient to disassemble and maintain, dust is prevented from affecting the motor, the metal foil can effectively eliminate electromagnetic interference of the motor, the heat dissipation copper pipe with the self-circulation heat dissipation function is used, the heat dissipation effect is good, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of motor casings, in particular to a brushless DC motor casing. Background Art

[0002] Brushless DC motors have the advantages of high efficiency, long life, and low noise. They are widely used in daily life. However, there are still problems during use, such as electromagnetic interference and poor heat dissipation efficiency that affect the operation of components.

[0003] According to the patent number CN115642737A, a DC brushless motor with an aluminum alloy housing includes: a base, a rotating shaft is rotatably supported on the base; an eccentric wheel assembly, the eccentric wheel assembly is fixedly connected to the rotating shaft; a driving assembly, the output end of the driving assembly is connected to the shaft end of the rotating shaft to drive the rotating shaft to rotate around its own axis, the driving assembly includes a stator component and a rotor component; the rotor component includes a housing and a magnetic ring, a housing is provided with a receiving cavity with one end open, the magnetic ring is provided on the inner ring surface of the receiving cavity, the stator component is accommodated in the receiving cavity, and the housing is made of aluminum alloy. This patent selects aluminum alloy as the housing material, the mold forming process is simple, and no surface treatment such as corrosion and rust prevention is required after processing, the corrosion resistance is good, light and beautiful, the quality is lower than that of the iron housing, when the motor rotates at high speed, the overall stability of the motor is better, and no additional surface treatment is required.

[0004] However, the heat dissipation of the brushless DC motor during use of the above device relies on air convection through the heat dissipation holes. The heat dissipation effect is poor when the running time is slightly longer. At the same time, the casing lacks effective response to the electromagnetic interference of the motor. Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a brushless DC motor casing is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a DC brushless motor casing to solve the problem that the DC brushless motor casing proposed in the above background technology relies on heat dissipation through holes to dissipate the heat generated during the use of the motor, but cannot effectively cool down when running for a long time, and lacks effective response to electromagnetic interference.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a DC brushless motor casing, comprising a casing, a metal foil and a heat dissipation copper tube, characterized in that: the inner wall of the casing is provided with a metal foil, the bottom of the outer surface of the casing is connected with a hinge, the top of the outer surface of the casing is provided with a connecting structure, the inner wall of the metal foil is provided with a heat dissipation copper tube, one side of the heat dissipation copper tube is connected with a connecting pipe, one side of the connecting pipe is connected with a micro water pump, an annular wire frame is provided inside the metal foil, one side of the annular wire frame is connected with a supporting sleeve, the outer surface of the supporting sleeve is provided with a stator core, the stator core is provided with several groups, and the stator core is evenly arranged along the outer surface of the supporting sleeve, a magnetic ring is provided on one side of the supporting sleeve, a side plate is provided on one side of the magnetic ring, a bearing is connected to one side of the side plate, an action wheel is provided at the center of the bearing, bearing seats are provided on both sides of the bearing, the bottoms of the two groups of bearing seats are connected with bases, and bottom plates are provided on both sides of the top of the base.

[0007] Furthermore, the housing is two groups of rectangular shells that are symmetrically arranged. The two groups of housings can be opened and closed left and right through the hinges, and sealing gaskets are arranged on both sides of the opening and closing surfaces of the housing.

[0008] Furthermore, the connection structure includes a lock buckle and a fixing bolt. The lock buckle is provided in two groups, and the two groups of the lock buckles are respectively located on two groups of shells of the casing. The center of the lock buckle is connected with a fixing bolt.

[0009] Furthermore, two groups of heat dissipation copper tubes are provided, the two groups of heat dissipation copper tubes are arranged on both side facades of the metal foil, and the tops of the two groups of heat dissipation copper tubes are interconnected, and the two groups of heat dissipation copper tubes, the connecting pipe and the micro water pump form a circulation loop.

[0010] Furthermore, the housing is provided with a hole on one side of the bearing seat, and the metal foil is also provided with a hole on one side of the bearing seat, so that the bearing can pass through the hole to connect with the support sleeve.

[0011] Furthermore, the action wheel is a circular ring structure with protrusions on the outer surface.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the housing of the brushless DC motor adopts a left-right combination housing with metal foil and heat dissipation copper tubes arranged inside, the left-right combination makes the housing easy to disassemble and repair to prevent dust from affecting the motor, the metal foil can effectively eliminate the electromagnetic interference of the motor, and the heat dissipation copper tube with self-circulating heat dissipation has good heat dissipation effect and high efficiency. The specific contents are as follows:

[0013] The two side shells are connected by hinges to form a casing, and quick installation and disassembly are achieved through connecting buckles, which is convenient for users to carry out maintenance and inspection. There are sealing rings on the connecting surfaces to ensure that the casing can still maintain good sealing performance after multiple disassembly and assembly to prevent dust and moisture from intrusion. The hinge connection and buckle fixation ensure the structural stability of the casing during frequent disassembly and assembly and use, which greatly improves the convenience of users during use and maintenance. Metal foil is installed in the inner cavity of the casing to offset EMI electromagnetic interference and improve the applicability of the motor in various electronic devices. A self-circulating heat dissipation copper pipe connected to a micro water pump through a connecting pipe is arranged inside the metal foil. The principle of heat absorption evaporation and heat release condensation of the working fluid can be used to quickly and effectively transfer heat from the inside of the motor to achieve a good heat dissipation effect. The coolant is driven by the micro water pump to circulate in the heat pipe system, which can quickly take away the heat generated by the motor and improve the heat dissipation efficiency. At the same time, the micro water pump is arranged on the motor base to save space and make the entire heat dissipation system more compact and integrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a brushless DC motor housing of the utility model;

[0015] Figure 2 It is a schematic diagram of the top view of the structure of a brushless DC motor housing of the utility model;

[0016] Figure 3 The utility model is a three-dimensional schematic diagram of a brushless DC motor casing.

[0017] In the figure: 1. casing; 2. metal foil; 3. hinge; 4. connection structure; 5. heat dissipation copper tube; 6. connecting pipe; 7. micro water pump; 8. annular wire rack; 9. support sleeve; 10. stator core; 11. magnetic ring; 12. side plate; 13. bearing; 14. action wheel; 15. bearing seat; 16. base; 17. bottom plate; 18. sealing gasket; 19. lock; 20. fixing bolt. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1 - Figure 3The utility model provides a technical solution: a DC brushless motor casing, comprising a casing 1, a metal foil 2 and a heat dissipation copper tube 5. The casing 1 is made of metal material and plays a role of protection and support. The casing 1 must have a certain collision resistance. The casing 1 is two groups of rectangular shells arranged symmetrically. The two groups of casings 1 can be opened and closed left and right through hinges 3, and sealing gaskets 18 are arranged on both sides of the opening and closing surfaces of the casing 1. The sealing gaskets 18 are made of rubber material and play a role of sealing the gap generated by the connection of the casing 1. The inner wall of the casing 1 is provided with a metal foil 2, and the metal foil 2 is a nickel-cobalt eutectic alloy. This alloy has a high magnetic permeability and can effectively absorb and reflect magnetic fields. The bottom of the outer surface of the casing 1 is connected with a hinge 3, and the top of the outer surface of the casing 1 is provided with a connecting structure 4. The connecting structure 4 includes a lock 19 and a fixing bolt 20. The lock 19 is a rectangular block made of metal material. Two groups of locks 19 are provided, and the two groups of locks 19 are respectively located The two groups of shells of the casing 1 play a fixing role that facilitates installation and disassembly. A fixing bolt 20 is connected at the center of the lock buckle 19. The fixing bolt 20 is made of high-hardness metal material and can lock the shells on both sides to maintain good sealing during operation. A heat dissipation copper tube 5 is arranged on the inner wall of the metal foil 2. The heat dissipation copper tube 5 has good temperature conductivity and is filled with coolant. The coolant uses pure water and will not cause evaporative pollution to the environment. There are two groups of heat dissipation copper tubes 5. The two groups of heat dissipation copper tubes 5 are arranged on the two side facades of the metal foil 2, and the tops of the two groups of heat dissipation copper tubes 5 are connected to each other. The two groups of heat dissipation copper tubes 5 and the connecting pipe 6 and the micro water pump 7 form a circulation loop, so that the coolant circulates therein, takes away the heat of the motor, and dissipates the heat in the pipe of the heat dissipation copper tube 5. This heat dissipation mode has a strong and stable heat dissipation effect. One side of the heat dissipation copper tube 5 is connected to the connecting pipe 6, and one side of the connecting pipe 6 is connected to the micro water pump 7.

[0020] An annular wire frame 8 is arranged inside the metal foil 2, and a support sleeve 9 is connected to one side of the annular wire frame 8. The support sleeve 9 is a cylindrical structure made of metal material. A stator core 10 is arranged on the outer surface of the support sleeve 9. The stator core 10 is arranged in several groups, and the stator core 10 is evenly arranged along the outer surface of the support sleeve 9. A magnetic ring 11 is arranged on one side of the support sleeve 9, and a side plate 12 is arranged on one side of the magnetic ring 11. The side plate 12 can make the support sleeve 9 firmly connected to the bearing 13. One side of the side plate 10 is connected to the bearing 13. The bearing 13 is a long cylindrical structure made of metal material, which can drive the motor parts to rotate, thereby generating kinetic energy. A hole is provided on one side of the bearing seat 15 of the casing 1, and a hole is also provided on one side of the bearing seat 15 of the metal foil 2, so that the bearing 13 can pass through the hole to connect to the support sleeve 9. An action wheel 14 is provided at the center of the bearing 13, and the action wheel 14 is a circular ring structure with a protrusion on the outer surface. Bearing seats 15 are provided on both sides of the bearing 13, and the bottoms of the two groups of bearing seats 15 are connected to bases 16. The base 16 has a large contact area with the ground, which can make the motor more stable during operation. Bottom plates 17 are provided on both sides of the top of the base 16. The bottom plates 17 are two groups of thinner metal plates, which can protect the action wheel 14 from environmental influences during operation.

[0021] Working principle: When using a DC brushless motor casing, the casing 1 is fixed to the outside of the support sleeve 9 through the hinge 3 and the connecting structure 4, and then fixed by the fixing bolts 20 to form a sealed space. There is a sealing gasket 18 on the connecting surface to ensure that the casing 1 can still maintain good sealing performance after multiple disassembly and assembly, prevent dust and moisture from invading, and realize quick installation and disassembly, which is convenient for users to maintain and repair. The hinge 3 and the connecting structure 4 ensure the structural stability of the casing 1 during frequent disassembly and use. A metal foil 2 is arranged inside the casing 1. The metal foil 2 can offset EMI electromagnetic interference and improve the applicability of the motor in various electronic devices. At the same time, a heat dissipation copper tube 5 surrounding the support sleeve 9 is arranged on the inner wall of the metal foil 2. The heat dissipation copper tube 5 is connected to the connecting tube 6 and the micro water pump 7 to form a self-circulating heat dissipation system. The heat dissipation copper tube 5 can absorb the heat dissipated by the motor when the motor is running. The working fluid absorbs heat and evaporates and releases heat. The principle of condensation can quickly and effectively transfer heat from the inside of the motor, achieve a good heat dissipation effect, and maintain the constant temperature in the closed space of the casing 1.

Claims

1. A brushless DC motor housing, comprising a housing (1), a metal foil (2) and a heat dissipation copper tube (5), characterized in that: The inner wall of the housing (1) is provided with a metal foil (2), the bottom of the outer surface of the housing (1) is connected to a hinge (3), the top of the outer surface of the housing (1) is provided with a connection structure (4), the inner wall of the metal foil (2) is provided with a heat dissipation copper tube (5), one side of the heat dissipation copper tube (5) is connected to a connection tube (6), one side of the connection tube (6) is connected to a micro water pump (7), an annular wire frame (8) is provided inside the metal foil (2), one side of the annular wire frame (8) is connected to a support sleeve (9), and the outer surface of the support sleeve (9) is provided with a stator core (10), The stator cores (10) are provided in a plurality of groups, and the stator cores (10) are evenly arranged along the outer surface of the support sleeve (9); a magnetic ring (11) is provided on one side of the support sleeve (9); a side plate (12) is provided on one side of the magnetic ring (11); a bearing (13) is connected to one side of the side plate (12); an action wheel (14) is provided at the center of the bearing (13); bearing seats (15) are provided on both sides of the bearing (13); the bottoms of the two groups of bearing seats (15) are connected to a base (16); and bottom plates (17) are provided on both sides of the top of the base (16).

2. A brushless DC motor housing according to claim 1, characterized in that: The housing (1) is two groups of rectangular shells arranged symmetrically. The two groups of housings (1) can be opened and closed left and right through the hinges (3), and sealing gaskets (18) are arranged on both sides of the opening and closing surfaces of the housing (1).

3. A brushless DC motor housing according to claim 1, characterized in that: The connection structure (4) comprises a lock buckle (19) and a fixing bolt (20), wherein two groups of the lock buckles (19) are provided, and the two groups of the lock buckles (19) are respectively located on two groups of shells of the casing (1), and the fixing bolt (20) is connected at the center of the lock buckle (19).

4. A brushless DC motor housing according to claim 1, characterized in that: The heat dissipation copper tubes (5) are provided in two groups, and the two groups of heat dissipation copper tubes (5) are arranged on both side elevations of the metal foil (2), and the tops of the two groups of heat dissipation copper tubes (5) are connected to each other, and the two groups of heat dissipation copper tubes (5) and the connecting tubes (6) and the micro water pump (7) form a circulation loop.

5. The brushless DC motor housing according to claim 1, characterized in that: The housing (1) is provided with a hole on one side of the bearing seat (15), and the metal foil (2) is also provided with a hole on one side of the bearing seat (15), so that the bearing (13) can pass through the hole to connect with the support sleeve (9).

6. A brushless DC motor housing according to claim 1, characterized in that: The action wheel (14) is a circular ring structure with protrusions on the outer surface.

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