A deceleration micro motor

Abstract

The utility model discloses a kind of reduction micro motor, it is related to micro motor technical field, to solve the problem of heat concentration in inner side area after long time use of existing motor. Its technical scheme main point is: including motor main body and motor shell, motor shell is fixedly connected with frame body, motor main body is clamped in frame body center, motor shell is detachably connected with flow guide frame, flow guide frame is provided with the recess of several pairs of air flow play guiding effect, recess is spirally arranged along flow guide frame side wall, motor shell is close to the side of motor main body output shaft and is provided with several air inlets. A kind of reduction micro motor of the utility model, in the process that rotor rotates in motor main body, outside air current will be driven by gap on stator, air current will be guided under flow guide frame and be vortex in motor shell Heat dissipation, so that the heat in shell body is evenly taken out, to improve motor service life.

Description

Technical Field

[0001] This utility model relates to the field of micro motor technology, and more specifically, to a geared micro motor. Background Technology

[0002] An electric motor is a common type of electric drive component that is used in various parts of life.

[0003] An electric motor mainly consists of a housing, a stator, and a rotor. When energized, the coils on the stator generate a magnetic field, while the main component of the rotor is a permanent magnet. The electric motor utilizes the principle of magnetic pole repulsion between the stator and the rotor to make the output shaft connected to the rotor rotate and output power.

[0004] After a long period of operation, the conversion of electromagnetism inside the motor generates a large amount of heat. After the heat is transferred, the density of the gas that has increased in temperature decreases and it rises. This causes the airflow inside the motor to accumulate for a long time and is difficult to dissipate, which affects the lifespan of the motor.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a speed-reducing micro motor that guides the flow direction of airflow through a guide frame, so that the airflow flows in the circumferential direction of the motor body, thereby avoiding excessive heat concentration in the area.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a speed-reducing micro motor includes a motor body and a motor housing. A frame is fixedly connected inside the motor housing, and the motor body is snapped into the center of the frame. A guide frame is detachably connected inside the motor housing. The guide frame is provided with a number of grooves that guide the airflow. The grooves are spirally arranged along the side wall of the guide frame. A number of air inlets are provided on the side of the motor housing near the output shaft of the motor body.

[0008] The present invention is further configured such that the number of thread turns of the flow guide is less than 2 and not less than 1.

[0009] The present invention is further configured such that: the air guide frame is provided with a plurality of fixing slots for the frame body to be inserted, and a filling strip is fixedly connected to the side of the frame body away from the air guide frame, and the side of the filling strip near the air inlet is set as an inclined surface.

[0010] The present invention is further configured such that several of the air inlets are evenly distributed circumferentially along the central axis of the motor housing.

[0011] The present invention is further configured such that: an air intake block is fixedly connected inside the air intake port, and the air intake block has several flow channels, and the gas flows in the flow channels at an angle.

[0012] The present invention is further configured such that the flow channel is arranged in a Z-shape within the air intake block.

[0013] The present invention is further configured such that: the bottom end of the motor housing is open and a baffle is fixedly connected thereto, and the baffle is detachably connected to the motor body.

[0014] In summary, this utility model has the following beneficial effects:

[0015] During the rotation of the rotor in the motor body, the airflow on the outside is driven by the gap on the stator. Under the guidance of the guide frame, the airflow will dissipate heat in a vortex shape in the motor housing, so that the heat inside the housing is evenly carried out, thereby improving the service life of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0019] In the diagram: 1. Motor body; 2. Motor housing; 3. Frame; 4. Flow guide; 5. Groove; 6. Air inlet; 7. Filler strip; 8. Air inlet block; 9. Flow channel; 10. Baffle. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] A type of geared micro motor, such as Figure 1-3As shown, the device includes a motor body 1 and a motor housing 2. When powered on, the motor body 1 drives the rotor to rotate within the motor housing 2 using the electromagnetism principle of the stator. The rotational power is output through the output shaft of the motor body 1 at its output end. The motor housing 2 contains a cavity and a frame 3 for restricting the motor body 1. The motor body 1 is mounted on the frame 3, at which point the outer periphery of the motor body 1 is fixed, and power is input into the motor body 1 via electrical wires. A flow guide 4 is detachably connected to the inner side of the motor housing 2. With the flow guide 4, several grooves 5 are formed inside the motor housing 2 to guide airflow. During the operation of the motor body 1, the airflow generated will dissipate heat through the grooves 5 and the designed pathways, improving the thermal uniformity of the inner cavity. When cold airflow enters the motor housing 2, it can transfer heat to the outside more quickly.

[0022] like Figure 1-3 As shown, the flow guide 4 is installed into the motor housing 2 from the side away from the output end of the motor body 1. Its cross-section is annular. The flow guide 4 is provided with a fixing groove to avoid the frame body 3, so that the flow guide 4 and the frame body 3 do not interfere with each other during installation. Several protrusions are provided on the flow guide 4. The protrusions are spiral in the flow guide 4. With the setting of the protrusions, a threaded groove 5 is naturally formed in the flow guide 4. The rotation direction of the motor body 1 is set based on its central axis. The motor body 1 is installed into the motor housing 2. The motor housing 2 and the motor body 1 are connected. The central axis of the main body 1 coincides. When the main body 1 of the motor is running, the airflow driven by it will move in an approximately spiral direction, which can further improve the guiding effect. An air hole is provided at the bottom of the guide frame 4 to facilitate the airflow to be guided to the outside. The groove 5 is spirally set, and its number of threads is less than 2. This setting can not only greatly reduce the processing difficulty and processing accuracy, but also greatly reduce the resistance of airflow guidance. When the number of threads is less than 1, the internal airflow will not rotate for one revolution, making it difficult to achieve the effect of uniform heat dissipation according to the standard of the circumference of the main body 1 of the motor.

[0023] like Figure 2-3 As shown, an air inlet 6 for gas entry is provided on the upper side of the motor housing 2 corresponding to the guide frame 4. The air inlets 6 are evenly distributed in a circle along the central axis of the motor housing 2, which can achieve a uniform air intake effect. During the rotation of the rotor, gas will be discharged, and the amount of discharge increases with the length of the rotor. The frame 3 restricts the motor body 1 in the middle section of the motor body 1, which can ensure a stable connection. The air inlet 6 is located at the front section of the motor body 1 to facilitate air intake. After the air is intake, it is discharged by the rear of the rotor, which improves the heat exchange rate and allows the surface heat of the motor body 1 to be quickly carried away by thermal conversion.

[0024] like Figure 2-3As shown, an air intake block 8 is installed on the motor housing 2 at one end of the air inlet 6. Several flow channels 9 for gas flow are obliquely arranged inside the air intake block 8. An adsorption layer is provided on the surface of the flow channels 9. During the gas discharge process, dust will be present in the gas. The adsorption layer and the oblique arrangement of the flow channels 9 can improve the adsorption effect of the inner wall of the flow channels 9. There are several Z-shaped bends in the flow channels 9. The bends can improve the airflow inflow time and flow path, so that the dust in the flow channels 9 can be restricted to the inner surface of the flow channels 9 as much as possible, and prevent the dust from entering the motor housing 2 and affecting the rotor rotation of the motor body 1.

[0025] like Figure 2-3 As shown, with the filler strip 7 in place, the area between the fixing groove and the frame 3 used for assembly will reduce the connection gap and avoid the height difference affecting the airflow guidance. At the same time, the filler strip 7 is inclined on the side near the air inlet 6, which facilitates the guidance of airflow after it enters the air inlet 6 and improves the airflow effect.

[0026] like Figure 1-2 As shown, the bottom of the motor housing 2 is open and a baffle 10 is fixedly connected to it. The open bottom of the motor housing 2 can greatly improve the effect of airflow outward. The baffle 10 prevents external dust from entering. The baffle 10 is detachably connected to the motor body 1, which is convenient for cleaning and for the installation and maintenance of the motor body 1.

[0027] Working principle:

[0028] After the motor body 1 is powered on, it will rotate. The stator part of the motor body 1 is fixed on the frame 3, and the rotor part rotates on the stator part. The rotation of the rotor part will drive the airflow inside, so that the airflow enters from the air inlet block 8 and is guided by the air guide frame 4. The groove 5 on the air guide frame 4 is threaded, with less than 2 but not less than 1 turn, so that the airflow flows in the corresponding direction of the outer circumference of the motor body 1, so as to avoid heat concentration in some areas of the motor body 1, which would affect the lifespan.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A geared micro motor, comprising a motor body (1) and a motor housing (2), characterized in that: A frame (3) is fixedly connected inside the motor housing (2). The motor body (1) is snapped into the center of the frame (3). A flow guide (4) is detachably connected inside the motor housing (2). Several grooves (5) are provided on the flow guide (4) to guide the airflow. The grooves (5) are spirally arranged along the side wall of the flow guide (4). Several air inlets (6) are provided on the side of the motor housing (2) near the output shaft of the motor body (1).

2. The geared micro motor according to claim 1, characterized in that: The number of thread turns of the guide frame (4) is less than 2 and not less than 1.

3. A geared micro motor according to claim 1, characterized in that: The air guide frame (4) is provided with several fixed slots for the frame body (3) to be placed in. The frame body (3) is fixedly connected to a filling strip (7) on the side away from the air guide frame (4). The filling strip (7) is set as an inclined surface on the side near the air inlet (6).

4. A geared micro motor according to claim 1, characterized in that: Several of the air inlets (6) are evenly distributed in a circle along the central axis of the motor housing (2).

5. A geared micro motor according to claim 4, characterized in that: An air inlet block (8) is fixedly connected inside the air inlet (6). Several flow channels (9) are opened inside the air inlet block (8). When the gas flows in the flow channels (9), there are bends.

6. A geared micro motor according to claim 5, characterized in that: The flow channel (9) is arranged in a Z-shape inside the air intake block (8).

7. A geared micro motor according to claim 1, characterized in that: The bottom of the motor housing (2) is open and fixedly connected with a baffle (10), which is detachably connected to the motor body (1).

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