Motor for fan

Abstract

The motor comprises a stator, the middle part of the outer wall of the stator is sleeved with a housing, the back end of the housing is provided with a rear end cover, the inner wall of the stator is sleeved with a rotor, the middle part of the inner wall of the rotor is provided with a connecting rod in a penetrating manner, and the back end of the outer wall of the connecting rod is sleeved with the middle part of the front end of the rear end cover. The front end of the shell is fixedly connected with a fixing frame, and the fixing frame is used for supporting connection of a connecting rod. The first bearing groove and the second bearing groove are designed in the first rotating bearing and the second rotating bearing of the connecting rod to support the connecting rod to rotate, the fixing frame is designed at the front end of the shell, the first bearing groove is formed in the middle end of the fixing frame, and the connecting rod penetrates through the fixing frame and is sleeved with the first rotating bearing according to the lever principle. The connection between the connecting rod and the shell and the stator is enhanced, so that the connecting rod and the rotor are stable in the operation process, the friction force between the shell and the stator is reduced, and the operation efficiency of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the general technical field of fan motors, in particular to a fan motor. Background Art

[0002] The fan motor has high reliability. The principle is to energize the stator and change the magnetism of the coil in time so that the stator continues to generate a repulsive force inside the rotor, and then rotates inside the stator to drive the blades to rotate, converting electrical energy into mechanical energy. The motor installed in the fan on the market uses a shaft sleeve to connect the rotor connecting rod and the housing. When the connecting rod rotates, it will rub against the shaft sleeve, which is prone to jamming and stopping. For this reason, double bearings are installed at the front and rear ends of the connecting rod. When the bearings are installed, the weight of the connecting rod increases, and the stress at the connection between the connecting rod and the housing will also increase. During rotation, the connection of the bearings is prone to overtightening and fatigue burning. For this reason, a fan motor is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a motor for a fan to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan motor, a stator outer wall middle part is sleeved with a shell, a rear end cover is arranged at the back end of the shell, a rotor is sleeved with the inner wall of the stator, a connecting rod is inserted and connected with the middle part of the inner wall of the rotor, the back end of the outer wall of the connecting rod is sleeved with the front middle part of the rear end cover, the front end of the shell is fixedly connected with a fixing frame, and the fixing frame is used to support the connection of the connecting rod.

[0005] Preferably, a first rotation bearing is arranged in the middle of the outer wall of the connecting rod, and a second rotation bearing is arranged at one end of the connecting rod close to the rear end cover.

[0006] Preferably, the front end of the fixing frame is sleeved with a front end cover, the back edge of the front end cover is fixedly connected to the front end edge of the shell, and a first bearing groove is provided in the middle of the front end of the fixing frame.

[0007] Preferably, the outer wall of the first rotating bearing is sleeved with the inner wall of the first bearing groove, and the connecting rod is inserted through the first rotating bearing and the inner wall of the first bearing groove.

[0008] Preferably, the inner wall of the rear end cover is sleeved with an end of the stator outer wall away from the front end cover.

[0009] Preferably, a second bearing groove is provided in the middle of the front end of the rear end cover, and the outer wall of the second bearing groove is sleeved with the outer wall of the second rotating bearing.

[0010] Preferably, a circuit line is provided on the back of the rear end cover, one end of the circuit line close to the stator is electrically connected to the back end of the stator, and the middle part of the outer wall of the circuit line is interlaced with the back end of the rear end cover.

[0011] Technical effects and advantages of the utility model:

[0012] The utility model utilizes a first bearing groove and a second bearing groove designed on the first rotating bearing and the second rotating bearing of the connecting rod to support the rotation thereof, and a fixing frame is designed at the front end of the shell, the middle end of the fixing frame is the first bearing groove, and the principle of lever is utilized to insert the connecting rod and sleeve the first rotating bearing through the fixing frame, so as to strengthen the connection between the connecting rod and the shell and the stator, so that the connecting rod and the rotor are stable during operation, and the friction between the shell and the stator is reduced, and the heat generation therebetween is reduced, so as to improve the operation efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the fixing frame structure of the utility model.

[0014] Figure 2 It is a side view of the front end cover structure of the utility model.

[0015] Figure 3 It is a structural rear view of the rear end cover of the utility model.

[0016] Figure 4 It is a schematic diagram of the first rotary bearing and the second rotary bearing structure of the utility model.

[0017] In the figure: 1. stator; 2. housing; 201. rear end cover; 202. front end cover; 203. fixing frame; 3. rotor; 301. connecting rod; 302. first rotating bearing; 303. second rotating bearing; 304. first bearing slot; 305. second bearing slot; 4. circuit line. 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] The utility model provides Figure 1-4 A fan motor shown in the figure comprises a stator 1, a housing 2 is sleeved on the middle of the outer wall of the stator 1, a rear end cover 201 is arranged on the back end of the housing 2, a rotor 3 is sleeved on the inner wall of the stator 1, a connecting rod 301 is inserted and connected to the middle of the inner wall of the rotor 3, the back end of the outer wall of the connecting rod 301 is sleeved with the middle of the front end of the rear end cover 201, and a fixing frame 203 is fixedly connected to the front end of the housing 2, and the fixing frame 203 is used to support the connection of the connecting rod 301;

[0020] It should be noted that the designed shell 2 adopts thickened silicon steel sheet, which has good magnetic conductivity and low loss characteristics, and can reduce the hysteresis loss of the stator 1. The front end and the back end of the shell 2 are provided with multiple threaded holes. The back end of the shell 2 is fixedly connected to the front end of the rear end cover 201 through the threaded holes, and the inner wall of the stator 1 is wound with pure copper coils, which can generate low heat and strong willfulness when powered on.

[0021] Specifically, a first rotating bearing 302 is provided in the middle of the outer wall of the connecting rod 301, a second rotating bearing 303 is provided at one end of the connecting rod 301 close to the rear end cover 201, the front end of the fixing frame 203 is sleeved with the front end cover 202, the back edge of the front end cover 202 is fixedly connected to the front end edge of the outer shell 2, and a first bearing groove 304 is provided in the middle of the front end of the fixing frame 203.

[0022] It should be noted that the designed connecting rod 301 adopts a double-bearing design, and the first rotating bearing 302 and the second rotating bearing 303 are sleeved on both ends of the outer wall of the connecting rod 301, so that the connecting rod 301 can smoothly solve the problem of oil loss and jamming during the rotation process, thereby ensuring the efficiency of the motor, and the first rotating bearing 302 and the second rotating bearing 303 use ball bearings, so that the connecting rod 301 can rotate smoothly.

[0023] Specifically, the outer wall of the first rotating bearing 302 is sleeved with the inner wall of the first bearing groove 304 , and the connecting rod 301 is inserted through the first rotating bearing 302 and the inner wall of the first bearing groove 304 .

[0024] It should be noted that the front end of the fixing frame 203 is a plate with arc-shaped ends vertically intersecting, and the middle part of the intersection of the plates is set as the first bearing groove 304. During installation, the front end of the outer wall of the connecting rod 301 is inserted through the first bearing groove 304, and the first rotating bearing 302 is fixedly sleeved on the inner wall of the first bearing groove 304. The first bearing groove 304 is linked to the second bearing groove 305 to make the assembly of the connecting rod 301 more stable. The front end of the fixing frame 203 is sleeved with the front end cover 202, and the back edge of the front end cover 202 is provided with a threaded hole corresponding to the outer shell 2, and the front end cover 202 is fixedly connected to the outer shell 2 through the threaded hole.

[0025] The inner wall of the rear end cover 201 is sleeved with the outer wall of the stator 1 away from the end of the front end cover 202 , a second bearing groove 305 is provided in the middle of the front end of the rear end cover 201 , and the outer wall of the second bearing groove 305 is sleeved with the outer wall of the second rotating bearing 303 .

[0026] It should be noted that the front end of the rear end cover 201 is a recessed portion, which fits the outer wall of the stator 1 and is fixed to the back end of the housing 2 through the recessed portion and the stator 1. The middle of the recessed portion is a second bearing groove 305, which is sleeved and fixed with the second rotating bearing 303 to support the rotation of the connecting rod 301.

[0027] Specifically, a circuit line 4 is disposed on the back of the rear end cover 201 , one end of the circuit line 4 close to the stator 1 is electrically connected to the back end of the stator 1 , and the middle part of the outer wall of the circuit line 4 is interlaced with the back end of the rear end cover 201 .

[0028] It should be noted that the designed circuit line 4 can be divided into multiple branch lines of different colors. Each color of the branch line has a different function. The color can be used to adjust the motor speed, and the branch lines cannot be staggered and connected, which will cause the motor to burn out. When the circuit line 4 is energized, a rotating magnetic field is generated on the inner wall of the stator 1, and the magnetic field will rotate the stator 1 to complete the rotation.

[0029] Working principle of this utility model:

[0030] The specific operation is that the connecting rod 301 and the rotor 3 are an integral part, the first rotating bearing 302 is sleeved on the middle part of the outer wall of the connecting rod 301, the second rotating bearing 303 is sleeved on the back end of the outer wall of the connecting rod 301, the assembled rotor 3 is sleeved on the inner wall of the stator 1, the rear end cover 201 is sleeved on the rotor 3 and fixedly installed on the back end of the shell 2, the front end of the fixing frame 203 is inserted through the front end of the connecting rod 301 and sleeved on the first rotating bearing 302, and the fixing frame 203 and the shell 2 are fixedly installed. The front end is fixedly installed and the connecting rod 301 is supported and fixed, and then the middle part of the front end cover 202 is inserted into the connecting rod 301 and rotated on the front end of the fixing frame 203 to complete the assembly. The circuit line 4 is energized to generate a rotating magnetic field inside the stator 1. Under the influence of the magnetic field, the rotor 3 rotates, and the rotor 3 then rotates the connecting rod 301. Through the support of the first rotating bearing 302 and the second rotating bearing 303 and the first bearing slot 304 and the second bearing slot 305, the connecting rod 301 rotates smoothly and steadily.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A fan motor, comprising a stator (1), characterized in that: The outer wall of the stator (1) is sleeved with a housing (2) in the middle part, the back end of the housing (2) is provided with a rear end cover (201), the inner wall of the stator (1) is sleeved with a rotor (3), the middle part of the inner wall of the rotor (3) is connected with a connecting rod (301), the back end of the outer wall of the connecting rod (301) is sleeved with the front middle part of the rear end cover (201), the front end of the housing (2) is fixedly connected with a fixing frame (203), and the fixing frame (203) is used to support the connection of the connecting rod (301).

2. A fan motor according to claim 1, characterized in that: A first rotating bearing (302) is provided at the middle of the outer wall of the connecting rod (301), and a second rotating bearing (303) is provided at one end of the connecting rod (301) close to the rear end cover (201).

3. A fan motor according to claim 1, characterized in that: The front end of the fixing frame (203) is sleeved with a front end cover (202), the back edge of the front end cover (202) is fixedly connected to the front end edge of the housing (2), and a first bearing groove (304) is provided in the middle of the front end of the fixing frame (203).

4. A fan motor according to claim 2, characterized in that: The outer wall of the first rotating bearing (302) is sleeved with the inner wall of the first bearing groove (304), and the connecting rod (301) is inserted through the first rotating bearing (302) and the inner wall of the first bearing groove (304).

5. A fan motor according to claim 1, characterized in that: The inner wall of the rear end cover (201) is sleeved with an end of the outer wall of the stator (1) away from the front end cover (202).

6. A fan motor according to claim 2, characterized in that: A second bearing groove (305) is provided in the middle of the front end of the rear end cover (201), and the outer wall of the second bearing groove (305) is sleeved with the outer wall of the second rotating bearing (303).

7. A fan motor according to claim 1, characterized in that: A circuit line (4) is arranged on the back of the rear end cover (201); one end of the circuit line (4) close to the stator (1) is electrically connected to the back end of the stator (1); and the middle part of the outer wall of the circuit line (4) is interlaced with the back end of the rear end cover (201).

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