CN221081091U

CN221081091U - Permanent magnet brushless direct current motor

Info

Publication number: CN221081091U
Application number: CN202322719044.7U
Authority: CN
Inventors: 魏巍; 张洪玉; 王丽; 于佳润; 汪兆艳; 魏浩莱
Original assignee: Changchun Youfei Optical Machinery Technology Co ltd
Current assignee: Changchun Youfei Optical Machinery Technology Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-06-04
Anticipated expiration: 2033-10-11

Abstract

The utility model relates to the technical field of motors and discloses a permanent magnet brushless direct current motor, which comprises a protective cylinder, wherein one end of the protective cylinder is fixedly connected with a front end cover, the other end of the protective cylinder is fixedly connected with a rear end cover, a rotating shaft is arranged at the middle position inside the protective cylinder through a stator rotor, an impeller is fixedly connected with the outer wall of the rotating shaft inside the rear end cover, a wind groove is uniformly formed in one side of the rear end cover, which is close to the protective cylinder, wind holes penetrating through the protective cylinder are uniformly formed in the periphery of one side of the rear end cover, and a radiating cylinder is fixedly connected with the outer wall of the protective cylinder. The utility model can realize the limit and air drying of the bolts, avoid loosening to influence the stability of installation, simultaneously avoid rusting and damaging the bolts, blow out the heat in the external air motor in the working process, improve the air flow efficiency, and cooperate with the heat conduction of the heat dissipation cylinder, the protection cylinder, the concave part and the heat dissipation fins to rapidly discharge the heat, thereby ensuring the good heat dissipation performance of the heat dissipation cylinder and the heat dissipation fins so as to meet the continuous working under the high-temperature environment.

Description

Permanent magnet brushless direct current motor

Technical Field

The utility model relates to the technical field of motors, in particular to a permanent magnet brushless direct current motor.

Background

The permanent magnet brushless DC motor is a permanent magnet motor controlled by electronic circuit phase change or current, has the advantages of small volume, light weight, high efficiency, small inertia, high control precision and the like, simultaneously retains the excellent mechanical characteristics of the common DC motor, and is widely applied to the fields of servo control, numerical control machine tools, robots and the like.

When the permanent magnet brushless direct current motor in the prior art works for a long time, the situation of heat overload inevitably occurs due to repeated starting, so that in order to avoid overhigh heat, improvement is often carried out on a shell of the motor, for example, the shell is made of a material with good heat conduction performance, and radiating fins are uniformly arranged on the shell so as to timely radiate the heat;

However, the heat dissipation is not effective in a high-temperature environment or in long-time working, and the internal heat cannot be rapidly dissipated, so that the automatic starting and stopping protection is caused, and a certain trouble is brought to the working.

Therefore, we propose a permanent magnet brushless direct current motor which can rapidly lead out internal heat and improve peripheral air flow rate so as to improve heat dissipation effect, so as to solve the problems.

Disclosure of utility model

The utility model aims to provide a permanent magnet brushless direct current motor so as to solve the problems in the background technology.

The aim of the utility model can be achieved by the following technical scheme:

The utility model provides a brushless direct current motor of permanent magnetism, includes a section of thick bamboo that protects, the one end fixedly connected with front end housing of a section of thick bamboo protects, the other end fixedly connected with rear end cap of a section of thick bamboo protects, the inside intermediate position department of section of thick bamboo is installed through stator rotor and is installed the pivot, the inside pivot outer wall fixedly connected with impeller of rear end cap, the rear end cap is close to one side of a section of thick bamboo that protects evenly has seted up the wind groove, the wind hole that runs through a section of thick bamboo is evenly seted up all around to rear end cap one side, the outer wall fixedly connected with heat dissipation section of thick bamboo of a section of thick bamboo that protects, the louvre has evenly been seted up to one side of heat dissipation section of thick bamboo, the bottom symmetry fixedly connected with mounting panel of heat dissipation section of thick bamboo.

As a further scheme of the utility model: the two ends of the radiating cylinder are sealed, and a radiating air cavity is arranged between the radiating cylinder and the protective cylinder.

As a further scheme of the utility model: the outer surfaces of the heat dissipation cylinder and the protective cylinder are uniformly provided with pits, and the two sides of the heat dissipation cylinder are uniformly and fixedly connected with heat dissipation fins.

As a further scheme of the utility model: through holes are uniformly formed in the top end and the bottom end of the protective cylinder, and the protective cylinder is communicated with the inner space of the radiating cylinder through the through holes.

As a further scheme of the utility model: the inner wall of the air hole inside the protective cylinder is uniformly and fixedly connected with a heat-conducting plate.

As a further scheme of the utility model: the lower end cards of cooling cylinder both sides are equipped with the clamp plate, the both sides symmetry fixedly connected with spacing frame of clamp plate bottom.

As a further scheme of the utility model: one side of the pressing plate is fixedly connected with a fixing pin, and the pressing plate is connected with the radiating cylinder through the fixing pin.

As a further scheme of the utility model: auxiliary holes are uniformly formed in the side wall of the heat dissipation barrel on one side of the pressing plate, and the auxiliary holes are communicated with the heat dissipation air cavity between the heat dissipation barrel and the protective barrel.

The utility model has the beneficial effects that:

1. According to the permanent magnet brushless direct current motor, the impeller is driven to rotate in the working process, so that part of external air is blown into the protective cylinder, heat in the protective cylinder is discharged from the radiating holes along with wind, and the other part of air enters the wind holes, so that heat absorbed by the heat conducting plate and the protective cylinder is blown out from the radiating holes, the air flow efficiency is improved, and the heat is rapidly discharged by matching with the heat conduction of the radiating cylinder, the protective cylinder, the concave parts and the radiating fins, so that good heat dissipation performance of the permanent magnet brushless direct current motor is ensured, and continuous working in a high-temperature environment is met.

2. According to the permanent magnet brushless direct current motor, the top end of the bolt is pressed through the pressing plate to limit, so that loosening of the bolt caused by vibration sense of a follow-up working environment is avoided, and when heat dissipation is carried out, hot air is blown to the bolt along with guiding of the limiting frame through a part of wind force, so that rust of the bolt caused by factors such as water vapor is avoided, and the stability of integral installation is ensured.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic cross-sectional perspective view of the present utility model.

Fig. 3 is a schematic perspective view of a heat dissipating cylinder according to the present utility model.

Fig. 4 is a schematic view of the explosive structure of the rear end cap and the casing of the present utility model.

Fig. 5 is a schematic perspective view of a platen according to the present utility model.

In the figure: 1. a front end cover; 2. a rotating shaft; 3. a mounting plate; 4. a pressing plate; 5. a heat radiation fin; 6. a rear end cover; 7. a heat dissipation cylinder; 8. a through hole; 9. an impeller; 10. a wind groove; 11. a protective barrel; 12. a recess; 13. a heat radiation hole; 14. a limit frame; 15. a wind hole; 16. a heat conductive plate; 17. a fixing pin; 18. and a secondary hole.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, in this embodiment, a permanent magnet brushless dc motor includes a casing 11, one end of the casing 11 is fixedly connected with a front end cover 1, the other end of the casing 11 is fixedly connected with a rear end cover 6, a rotating shaft 2 is installed at a middle position inside the casing 11 through a stator rotor, an impeller 9 is fixedly connected to an outer wall of the rotating shaft 2 inside the rear end cover 6, a wind groove 10 is uniformly formed on one side of the rear end cover 6 close to the casing 11, wind holes 15 penetrating through the casing 11 are uniformly formed around one side of the rear end cover 6, a heat dissipation cylinder 7 is fixedly connected to an outer wall of the casing 11, heat dissipation holes 13 are uniformly formed on one side of the heat dissipation cylinder 7, and mounting plates 3 are symmetrically and fixedly connected to bottom ends of the heat dissipation cylinder 7.

As shown in fig. 2-4, in this embodiment, two ends of the heat dissipation barrel 7 are closed, and a heat dissipation air cavity is formed between the heat dissipation barrel 7 and the protection barrel 11 to ensure circulation of hot air, so that the hot air can be dissipated from the heat dissipation hole 13 along the air cavity.

As shown in fig. 1-4, the outer surfaces of the heat dissipation barrel 7 and the protection barrel 11 in the present embodiment are uniformly provided with the concave 12 to increase the overall surface area, so as to improve the heat dissipation efficiency, and the two sides of the heat dissipation barrel 7 are uniformly and fixedly connected with the heat dissipation fins 5 to quickly absorb and dissipate heat.

As shown in fig. 2 and 4, through holes 8 are uniformly formed in the top and bottom ends of the casing 11 in the present embodiment, and the casing 11 is communicated with the inner space of the heat dissipation cylinder 7 through the through holes 8, so as to ensure that air entering the inside of the casing 11 discharges heat through the through holes 8.

As shown in fig. 4, the inner wall of the air hole 15 inside the casing 11 in the present embodiment is uniformly and fixedly connected with a heat conducting plate 16, so that in the air flowing process, the heat on the heat conducting plate 16 is dissipated, and the strength of the air hole 15 is improved through the heat conducting plate 16.

As shown in fig. 1, 3 and 5, the lower ends of the two sides of the heat dissipation barrel 7 in the embodiment are clamped with the pressing plates 4, so that the bolts can be limited, loosening of the bolts is avoided, the installation stability is ensured, and the two sides of the bottom end of the pressing plates 4 are symmetrically and fixedly connected with the limiting frames 14 so as to guide the wind direction.

As shown in fig. 1, 3 and 5, a fixing pin 17 is fixedly connected to one side of the pressing plate 4 in the present embodiment, and the pressing plate 4 is connected to the heat dissipation cylinder 7 through the fixing pin 17.

As shown in fig. 3, the side wall of the heat dissipation barrel 7 at one side of the pressing plate 4 in the embodiment is uniformly provided with auxiliary holes 18, and the auxiliary holes 18 are communicated with the heat dissipation air cavity between the heat dissipation barrel 7 and the protection barrel 11 so as to facilitate hot air to blow to the bolt through the auxiliary holes 18, thereby avoiding the rusting of the bolt caused by factors such as water vapor.

It can be understood that this brushless direct current motor of permanent magnetism can realize spacing and the air-drying to the bolt, avoids appearing not hard up and influence the stability of installation, avoids the bolt to rust simultaneously and damages to make the inside heat of external air motor blow off at the in-process of work, improve air flow efficiency, cooperate heat dissipation section of thick bamboo 7, protect a section of thick bamboo 11, sunken 12 and radiating fin 5's heat conduction, quick with the heat discharge, guarantee self good heat dispersion, in order to satisfy the continuous operation under the high temperature environment.

The utility model has the following complete using steps and working principle:

Firstly, the motor is placed at a designated installation position, then the installation plate 3 is fixedly installed through bolts, and at the moment, the pressing plate 4 is fixed on the side wall of the heat dissipation barrel 7 through the fixing pins 17, so that the top end of the bolts is pressed by the pressing plate 4 to limit, and the loosening of the bolts caused by the shock sensation of the subsequent working environment is avoided;

when the air conditioner works, the rotating shaft 2 rotates to drive the impeller 9 to rotate, so that part of external air is blown into the protective cylinder 11 through the air groove 10, heat in the protective cylinder 11 enters between the heat dissipation cylinder 7 and the protective cylinder 11 through the through hole 8 along with wind and finally is discharged from the heat dissipation hole 13, and the other part of air enters the air hole 15 to blow out heat absorbed by the heat conducting plate 16 and the protective cylinder 11 and discharge the heat from the heat dissipation hole 13, the air flow efficiency is improved, and the heat is rapidly discharged by matching with the heat conduction of the heat dissipation cylinder 7, the protective cylinder 11, the concave 12 and the heat dissipation fins 5;

While radiating heat, a part of wind force is blown out through the auxiliary holes 18, and along with the guiding of the limiting frame 14, hot air is blown to the bolt, so that the bolt is prevented from being rusted due to factors such as water vapor.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A permanent magnet brushless dc motor comprising a casing (11), characterized in that: the novel heat radiation device comprises a front end cover (1) fixedly connected with one end of a protective cylinder (11), a rear end cover (6) fixedly connected with the other end of the protective cylinder (11), a rotating shaft (2) is arranged at the middle position of the interior of the protective cylinder (11) through a stator rotor, an impeller (9) is fixedly connected with the outer wall of the rotating shaft (2) inside the rear end cover (6), a wind groove (10) is uniformly formed in one side, close to the protective cylinder (11), of the rear end cover (6), wind holes (15) penetrating through the protective cylinder (11) are uniformly formed in the periphery of one side of the rear end cover (6), a heat radiation cylinder (7) is fixedly connected with the outer wall of the protective cylinder (11), a heat radiation hole (13) is uniformly formed in one side of the heat radiation cylinder (7), and a mounting plate (3) is symmetrically and fixedly connected with the bottom end of the heat radiation cylinder (7).

2. A permanent magnet brushless dc motor according to claim 1, characterized in that the two ends of the heat dissipation cylinder (7) are arranged in a closed manner, and a heat dissipation air cavity is provided between the heat dissipation cylinder (7) and the protection cylinder (11).

3. The permanent magnet brushless direct current motor according to claim 1, wherein the outer surfaces of the heat dissipation cylinder (7) and the protection cylinder (11) are uniformly provided with concave parts (12), and the two sides of the heat dissipation cylinder (7) are uniformly and fixedly connected with heat dissipation fins (5).

4. The permanent magnet brushless direct current motor according to claim 1, wherein through holes (8) are uniformly formed in the top end and the bottom end of the protective cylinder (11), and the protective cylinder (11) is communicated with the inner space of the heat dissipation cylinder (7) through the through holes (8).

5. A permanent magnet brushless dc motor according to claim 1, wherein the inner wall of the air hole (15) inside the casing (11) is uniformly and fixedly connected with a heat conducting plate (16).

6. The permanent magnet brushless direct current motor according to claim 1, wherein pressing plates (4) are clamped at the lower ends of two sides of the heat dissipation cylinder (7), and limiting frames (14) are symmetrically and fixedly connected to two sides of the bottom end of each pressing plate (4).

7. The permanent magnet brushless direct current motor according to claim 6, wherein one side of the pressing plate (4) is fixedly connected with a fixing pin (17), the pressing plate (4) is connected with the heat dissipation cylinder (7) through the fixing pin (17), and auxiliary holes (18) are uniformly formed in the side wall of the heat dissipation cylinder (7) on one side of the pressing plate (4).

8. The permanent magnet brushless direct current motor according to claim 6, wherein auxiliary holes (18) are uniformly formed in the side wall of the heat dissipation barrel (7) on one side of the pressing plate (4), and the auxiliary holes (18) are communicated with a heat dissipation air cavity between the heat dissipation barrel (7) and the protection barrel (11).