A new type of high frequency sound eliminating motor

Abstract

The utility model relates to motor technical field, concretely is a novel motor of eliminating high frequency sound, including the pivot, the one end outside of pivot is provided with fan, the outer wall of one end of pivot is close to fan and is connected with first bearing, the outer wall of first bearing is installed with first thick consistency curing agent, the outer wall of one end of pivot is away from fan and is connected with second bearing. The utility model motor's air duct placement bearing inner hole design is cooperated with second step, first bearing and second bearing are placed respectively at both sides of two groups of first step and third step, the groove of not being same in width is provided with in the air duct inner hole step both sides, first thick consistency curing agent and second thick consistency curing agent are injected respectively in the air duct inner hole and the cooperation place of first bearing and second bearing, first thick consistency curing agent and second thick consistency curing agent can adjust first bearing and second bearing into the coaxial before solidification, play the role of the centering, ensure that motor operation is not eccentric, avoid the problem such as high frequency sound produced by vibration.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a novel motor for eliminating high-frequency noise. Background Technology

[0002] Small or micro motors, such as a high-speed permanent magnet brushless DC motor, have a series of advantages such as high power density, small geometric size, fast dynamic response and high operating efficiency. They have broad application prospects in high-speed operation, such as the use of a high-speed permanent magnet brushless motor in hair dryers.

[0003] In high-speed operation, brushless DC motors place higher demands on the precision of component installation. Existing brushless DC motors are usually designed with the air duct and bearings manufactured separately and then assembled. This results in gaps between the air duct and bearings after installation. Large gaps cause vibration during motor operation, while small gaps make motor installation difficult. Applying glue to the gaps can also lead to problems such as glue overflow and jamming. Utility Model Content

[0004] The purpose of this invention is to provide a novel motor for eliminating high-frequency noise, thereby solving the problem mentioned in the background art where gaps exist in the air duct and bearings after installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel motor for eliminating high-frequency noise, comprising:

[0006] A rotating shaft has a fan mounted on one end of its outer side. A first bearing is connected to the outer wall of the shaft near the fan, and a first viscous curing agent is installed on the outer wall of the first bearing. A second bearing is connected to the outer wall of the shaft away from the fan, and a second viscous curing agent is installed on the outer wall of the second bearing. An air duct is provided around the entire periphery of the rotating shaft. A magnetic ring is provided on the outer wall of the shaft near the second bearing. A stator core is provided on the outer wall of the magnetic ring. An insulating frame is provided on the side of the stator core away from the fan. A pin is provided on the side of the insulating frame away from the stator core. A PCB is mounted on one side of the pin. A terminal block is provided on the side of the PCB away from the pin.

[0007] Preferably, the air duct includes a first step, a second step, and a third step, wherein the first step includes a first groove, and the third step includes a second groove.

[0008] Preferably, the bearing inner hole in the air duct is designed with a second-step fit.

[0009] Preferably, the first bearing and the second bearing are placed on both sides of the two sets of first steps and third steps, respectively.

[0010] Preferably, the inner hole step of the air duct is provided with grooves of different widths on both sides, namely the first groove and the second groove.

[0011] Preferably, the first and second viscous curing agents are initially in a fluid state.

[0012] Preferably, the first viscous curing agent and the second viscous curing agent are composed of chemical substances, specifically silicone.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The air duct of this utility model motor is designed to fit with the inner hole of the bearing and the second step. The first bearing and the second bearing are respectively placed on both sides of the two sets of first steps and third steps. Grooves of different widths are provided on both sides of the inner hole of the air duct, so as to facilitate the injection of the first viscous curing agent and the second viscous curing agent at the fit between the inner hole of the air duct and the first bearing and the second bearing. The first viscous curing agent and the second viscous curing agent can adjust the first bearing and the second bearing to be coaxial before curing, which plays a self-aligning role; ensuring that the motor runs without eccentricity and avoiding problems such as high-frequency noise caused by vibration. Attached image description:

[0015] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram showing the distribution of the air duct steps in this utility model;

[0018] Figure 4 This is a schematic diagram showing the location distribution of the air duct steps and grooves of this utility model;

[0019] Figure 5 For the present utility model Figure 1 Schematic diagram of part A in the middle;

[0020] Figure 6 This is a three-dimensional structural diagram of the first and second viscous curing agents of this utility model;

[0021] Figure 7 This is a side view of the first and second viscous curing agents of this utility model.

[0022] In the diagram: 1. Shaft; 2. Fan; 3. First bearing; 4. First viscous curing agent; 5. Second bearing; 6. Second viscous curing agent; 7. Air duct; 7-1. First step; 7-1-1. First groove; 7-2. Second step; 7-3. Third step; 7-3-1. Second groove; 8. Magnetic ring; 9. Stator core; 10. Insulating frame; 11. Pin; 12. PCB; 13. Terminal block. Detailed implementation method:

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-7 One embodiment of this utility model is a novel motor for eliminating high-frequency noise. The first bearing 3, the second bearing 5, and the PCB12 used in this application are all products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0025] The structure includes: a rotating shaft 1, with a fan 2 mounted on the outer side of one end of the shaft 1. The fan 2 serves to dissipate heat, ensuring that the internal air temperature does not become too high, thus affecting the normal operation of electronic components. A first bearing 3 is connected to the outer wall of the end of the shaft 1 closest to the fan 2. A first viscous curing agent 4 is installed on the outer wall of the first bearing 3. The first viscous curing agent 4 and a second viscous curing agent 6 serve to dampen vibrations and eliminate high-frequency noise. A second bearing 5 is connected to the outer wall of the end of the shaft 1 furthest from the fan 2. The second viscous curing agent 6 is installed on the outer wall of the second bearing 5, which fills the small gaps between the inner hole of the air duct 7 and the first bearing 3 and the second bearing 5, respectively. After being exposed to air for a period of time, it can solidify into a gel-like solid, which also serves to dampen vibrations and eliminate high-frequency noise. An air duct 7 is provided around the entire periphery of the rotating shaft 1. A magnetic ring 8 is provided on the outer wall near the second bearing 5. The magnetic ring 8 is a commonly used anti-interference component in electronic circuits, which has a good suppression effect on high-frequency noise. A stator core 9 is provided on the outer wall of the magnetic ring 8. An insulating frame 10 is provided on the side of the stator core 9 away from the fan 2. A pin 11 is provided on the side of the insulating frame 10 away from the stator core 9. The pin 11 is mainly used for transmitting current and signal control. A PCB 12 is installed on one side of the pin 11. The main function of the PCB 12 is to connect various electronic components to form a predetermined circuit and to act as a relay. A terminal block 13 is provided on the side of the PCB 12 away from the pin 11. The main function of the terminal block 13 is to fix and protect the motor wiring terminals. The positioning clamp and other structures prevent the connector from accidentally disengaging and improve the stability of the device.

[0026] Furthermore, the air duct 7 includes a first step 7-1, a second step 7-2, and a third step 7-3. The first bearing 3 and the second bearing 5 are supported by the second step 7-2 to eliminate axial force. The first step 7-1 includes a first groove 7-1-1, and the third step 7-3 includes a second groove 7-3-1, which facilitates the storage and curing of the first viscous curing agent 4 and the second viscous curing agent 6.

[0027] Furthermore, the bearing inner hole of the air duct 7 is designed to fit with the second step 7-2, and the first bearing 3 and the second bearing 5 are supported by the second step 7-2 to eliminate axial force.

[0028] Furthermore, the first bearing 3 and the second bearing 5 are placed on both sides of the two sets of first steps 7-1 and third steps 7-3 respectively, and the first bearing 3 and the second bearing 5 are supported by the second step 7-2 to eliminate axial force.

[0029] Furthermore, grooves of varying widths are provided on both sides of the inner hole step of the air duct 7, namely the first groove 7-1-1 and the second groove 7-3-1, to facilitate the storage and curing of the first viscous curing agent 4 and the second viscous curing agent 6.

[0030] Furthermore, the first viscous curing agent 4 and the second viscous curing agent 6 are initially in a flowing state, which can fill the small gaps between the inner hole of the air duct 7 and the first bearing 3 and the second bearing 5 respectively. After a period of time in the air, they can be cured into a gel-like solid. The gel-like solid plays the role of shock absorption and eliminating high-frequency noise.

[0031] Furthermore, the first viscous curing agent 4 and the second viscous curing agent 6 are composed of chemical substances, specifically silicone. The first viscous curing agent 4 and the second viscous curing agent 6 play a role in damping vibration and eliminating high-frequency noise.

[0032] Working principle: In use, the bearing inner hole of the air duct 7 is designed to mate with the second step 7-2; the first bearing 3 and the second bearing 5 are respectively placed on both sides of the two sets of first steps 7-1 and third steps 7-3; grooves of varying widths are provided on both sides of the inner hole steps of the air duct 7; the first viscous curing agent 4 and the second viscous curing agent 6 are initially in a flowing state, which can fill the small gaps between the inner hole of the air duct 7 and the first bearing 3 and the second bearing 5 respectively. The above is the complete working principle of this utility model.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel motor for eliminating high-frequency noise, characterized in that, include: A rotating shaft (1) is provided with a fan (2) on the outer side of one end of the rotating shaft (1). A first bearing (3) is connected to the outer wall of the end of the rotating shaft (1) near the fan (2). A first viscous curing agent (4) is installed on the outer wall of the first bearing (3). A second bearing (5) is connected to the outer wall of the end of the rotating shaft (1) away from the fan (2). A second viscous curing agent (6) is installed on the outer wall of the second bearing (5). An air duct (7) is provided around the entire periphery of the rotating shaft (1). A magnetic ring (8) is provided on the outer wall of the shaft (1) near the second bearing (5). A stator core (9) is provided on the outer wall of the magnetic ring (8). An insulating frame (10) is provided on the side of the stator core (9) away from the fan (2). A pin (11) is provided on the side of the insulating frame (10) away from the stator core (9). A PCB (12) is installed on the side of the pin (11). A terminal block (13) is provided on the side of the PCB (12) away from the pin (11).

2. The novel motor for eliminating high-frequency noise according to claim 1, characterized in that: The air duct (7) includes a first step (7-1), a second step (7-2) and a third step (7-3). The first step (7-1) includes a first groove (7-1-1), and the third step (7-3) includes a second groove (7-3-1).

3. A novel motor for eliminating high-frequency noise according to claim 2, characterized in that: The air duct (7) is designed to fit the bearing inner hole with the second step (7-2).

4. A novel motor for eliminating high-frequency noise according to claim 2, characterized in that: The first bearing (3) and the second bearing (5) are respectively placed on both sides of the two sets of first steps (7-1) and third steps (7-3).

5. A novel motor for eliminating high-frequency noise according to claim 2, characterized in that: The air duct (7) has grooves of varying widths on both sides of the inner hole step, namely the first groove (7-1-1) and the second groove (7-3-1).

6. A novel motor for eliminating high-frequency noise according to claim 1, characterized in that: The first viscous curing agent (4) and the second viscous curing agent (6) are initially in a flowing state.

7. A novel motor for eliminating high-frequency noise according to claim 1, characterized in that: The first viscous curing agent (4) and the second viscous curing agent (6) are composed of chemical substances, specifically silicone.

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