TW201810877A - Motor and fan - Google Patents

Abstract

A motor and a fan with the motor are disclosed. The motor comprises a stator, a rotor, a base, a circuit board and a buffering member. The stator includes a core and coils wound outside the core. The rotor includes a shaft rotatably coupled to the stator. The base couples with the stator. The base has a compartment plate. The circuit board is located at one side of the compartment plate. The circuit board electrically connects with the coils. Two sides of the buffering member abut against the compartment plate and the circuit board, respectively. By such arrangement, the circuit board will not be in contact with the base, and thus, the vibration of the motor is suppressed.

Description

Motor and fan

The invention relates to a motor and a fan, in particular to a motor provided with a cushion member on a base and a fan provided with the motor.

The existing motor generally includes a base, a stator, a rotor, and a circuit board. The stator is arranged on the base, the stator includes an iron core, and a coil is wound around the iron core. The rotor is rotatably coupled to the stator, the circuit board is coupled to the base, and the circuit board is electrically connected to the coil, so that the coil can be energized and drive the rotor to rotate relative to the stator. The rotor may also be provided with several blades, so that the existing motor can form a fan.

In order to enable the circuit board to be electrically connected to the coil, the stator is usually provided with a lead pin, and the lead pin is electrically connected to the coil and the circuit board, respectively. However, it is known that the iron core easily generates vibration when the existing motor is running, and the vibration generated by the iron core will be transmitted to the circuit board through the lead pin. Because the circuit board directly contacts the base, the vibration generated by the iron core will be transmitted to the base, and then to the outside of the existing motor, making the existing motor unsuitable for systems with low tolerance to product vibration. among.

In view of this, it is urgent to provide a further improved motor and fan to solve the problem that the existing motor is prone to vibration.

An object of the present invention is to provide a motor and a fan. A buffer member is disposed on a base of the motor to separate a circuit board from a partition of the base.

In order to achieve the foregoing invention objectives, the technical means used in the present invention include: A motor includes: a stator, the stator includes an iron core, and a coil is provided on the periphery of the iron core; a rotor includes a rotating shaft, the rotating shaft is rotatably coupled to the stator; and a base is coupled to the stator. The stator, and the base has a partition; a circuit board, the circuit board is disposed on one side of the partition, and the circuit board is electrically connected to the coil; and a buffer member, the two sides of the buffer member are abutted respectively The partition and the circuit board prevent the circuit board from contacting the base.

The stator is provided with a lead pin, the lead pin is electrically connected to the coil, and the lead pin is electrically connected to the circuit board. Thereby, the circuit board and the coil of the stator can be electrically connected through the lead pins.

Wherein, a winding sleeve is provided on the outer periphery of the iron core, the coil is wound around the winding sleeve, and the lead pin is arranged on the winding sleeve. Thereby, the lead pin can be fixed to the winding sleeve, so that the circuit board and the coil of the stator can be electrically connected via the lead pin.

The iron core and the circuit board are located on two sides of the partition, respectively. Therefore, since the coil or winding sleeve on the outer periphery of the iron core may carry current, the iron core is separated from the circuit board through the separator, which can provide insulation protection effect on the circuit board.

Wherein, the stator is provided with a lead pin, which is electrically connected to the coil, the partition plate is provided with a through hole, the through hole penetrates both sides of the partition plate, and the guide pin is passed through the through hole to Electrically connected to the circuit board. Thereby, the circuit board and the coil of the stator can be electrically connected through the lead pins.

Wherein, the base further includes a ring wall, which is disposed on the partition and extends away from the stator. The ring wall and the partition surround a receiving space together. The buffer member includes an outer periphery, and the outer periphery. The edges are respectively connected to both sides of the buffer member, and the outer peripheral edge abuts the inner peripheral wall of the annular wall toward the accommodation space. Thereby, the buffer member can be firmly coupled to the base.

The buffer member is provided with a first positioning portion on the outer peripheral edge, the ring wall is provided with a second positioning portion on the inner peripheral wall, and the first positioning portion and the second positioning portion form a latch. Thereby, the first positioning portion and the second positioning portion can prevent the buffer member from being displaced relative to the base.

Wherein, the buffer member is provided with at least one convex portion facing one side of the circuit board, the circuit board is provided with at least one notch corresponding to the at least one convex portion, and the at least one convex portion projects into the at least one notch to Position the circuit board so that the circuit board does not touch the base. Thereby, the buffer member can position the circuit board to prevent displacement of the circuit board and contact the ring wall of the base, thereby ensuring that vibrations are not transmitted to the base through the circuit board.

The number of the at least one convex portion and the at least one notch is an even number, each of the convex portions extends into each of the notches, and one of the convex portions is radially opposite to the other convex portion in one of the rotors. Thereby, the buffer member is respectively provided with convex portions on the symmetrical sides in the radial direction to position the circuit board, so that the buffer member can position the circuit board surely.

Wherein, the buffer member is provided with a ring flange facing one side of the circuit board, and the ring flange abuts the outer periphery of the circuit board. Thereby, the buffer member can locate the circuit board, and the ring flange can block the ring wall of the circuit board and the base in the radial direction, so as to prevent the circuit board from displacing and contacting the ring wall during vibration, ensuring vibration It is not passed to the base via the circuit board.

Wherein, the buffer member includes an outer peripheral edge, and the buffer member forms a shoulder at a position where the ring flange is adjacent to the outer peripheral edge, and the shoulder carries the circuit board. Thereby, the shoulder portion can increase the contact area between the buffer member and the circuit board, thereby improving the effect of the buffer member absorbing the vibration energy of the circuit board.

Wherein, the stator's winding sleeve is further provided with a positioning member, the partition plate is provided with a positioning hole, and the positioning member extends into the positioning hole. Thereby, the positioning member can prevent displacement of the stator relative to the base, and effectively improve the service life of the motor.

Wherein, another cushion pad is provided. The cushion pad is made of a shock-absorbing material, and the cushion pad is disposed between the positioning member and the partition. Thereby, the cushion pad can fill the space between the positioning member and the partition to improve the positioning effect of the positioning member; and the buffer pad can also block the positioning member and the partition, effectively preventing the iron core from generating The vibration is transmitted from the positioning member to the base.

Wherein, the buffer member is provided with an extension portion facing one side of the partition plate, the positioning hole is a through hole, and the extension portion extends into the positioning hole and is formed between the positioning member and the partition plate. Thereby, the extension can fill the space between the positioning member and the partition to improve the positioning effect of the positioning member; and the extension can also block the positioning member and the partition, effectively preventing the iron core The generated vibration is transmitted to the base by the positioning member.

Wherein, the stator winding sleeve is further provided with a positioning hole, the partition plate is provided with a positioning member, and the positioning member extends into the positioning hole. Thereby, the positioning member can prevent displacement of the stator relative to the base, and effectively improve the service life of the motor.

Wherein, another cushion pad is provided. The cushion pad is made of shock-absorbing material, and the cushion pad is disposed between the positioning member and the winding sleeve. Thereby, the buffer pad can fill the space between the positioning member and the winding sleeve to improve the positioning effect of the positioning member; and the buffer pad can also block the positioning member and the winding sleeve, effectively preventing the iron core The generated vibration is transmitted to the base by the positioning member.

Wherein, the positioning member is made of a shock-absorbing material, or the positioning member is a cylinder covered with a shock-absorbing material on the outside. Thereby, even if the positioning member contacts the partition, the vibration generated by the iron core can be effectively prevented from being transmitted from the positioning member to the base.

Wherein, the buffer member is formed in a ring shape, so as to form a gap between the circuit board and the partition to provide a space required for heat dissipation of the electronic circuit components on the circuit board, and can improve the heat dissipation effect of the circuit board.

Wherein, the circuit board and the partition board maintain a distance in an axial direction of one of the rotors. Thereby, the buffer member can block the transmission path of the vibration, and effectively prevent the vibration of the circuit board from being transmitted to the base.

The buffer member is made of a shock-absorbing material. Thereby, the buffer member can absorb the vibration energy of the circuit board, and effectively prevent the vibration of the circuit board from being transmitted to the base.

Wherein, one side of the partition forms an accommodating space, and the circuit board and the buffer member Set in the accommodation spaces respectively. Thereby, the partition can isolate the accommodating space for accommodating the circuit board and the buffer member.

According to the foregoing structure, the motor and the fan of the embodiments of the present invention provide a buffer member in the accommodating space of the base to separate the circuit board and the partition, so that the circuit board does not contact the base, so that Effectively prevent the vibration of the circuit board from being transmitted to the base, thereby ensuring that the vibration generated by the stator is not transmitted to the outside of the motor through the circuit board, and has the effect of reducing the overall vibration of the motor.

〔this invention〕

1‧‧‧ stator

11‧‧‧ iron core

12‧‧‧ Coil

13‧‧‧ Winding sleeve

131‧‧‧lead pin

132‧‧‧ Positioning piece

14‧‧‧ shaft tube

141‧‧‧The first shock absorber

142‧‧‧Second shock absorber

2‧‧‧ rotor

21‧‧‧ shaft

22‧‧‧shell

23‧‧‧Permanent magnet set

3‧‧‧ base

31‧‧‧ bulkhead

311‧‧‧through hole

312‧‧‧ positioning hole

32‧‧‧ ring wall

321‧‧‧Inner peripheral wall

322‧‧‧Second positioning section

4‧‧‧Circuit Board

41‧‧‧ gap

5‧‧‧ buffer

51‧‧‧outer periphery

511‧‧‧First Positioning Department

52‧‧‧ convex

53‧‧‧ ring flange

54‧‧‧Shoulder

55‧‧‧ extension

6‧‧‧ blade

7‧‧‧ cushion

G‧‧‧ Clearance

R‧‧‧ accommodation space

H‧‧‧Pitch

FIG. 1 is a schematic structural cross-sectional view of a motor according to a first embodiment of the present invention.

FIG. 2 is a structural exploded view of a motor according to the first embodiment of the present invention.

FIG. 3 is a schematic structural cross-sectional view of a motor according to a second embodiment of the present invention.

FIG. 4 is a structural exploded view of a motor according to a second embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view showing a structure of a motor according to a third embodiment of the present invention.

FIG. 6 is an exploded view of a motor according to a fourth embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view showing a structure of a motor according to a fourth embodiment of the present invention.

FIG. 8 is a schematic structural exploded view of another embodiment of the motor according to the fourth embodiment of the present invention.

FIG. 9 is an exploded view of a motor according to a fifth embodiment of the present invention.

FIG. 10 is a schematic cross-sectional view showing a structure of a motor according to a fifth embodiment of the present invention.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention and the accompanying drawings in detail, as follows:

Please refer to FIG. 1 and FIG. 2, which is a motor according to an embodiment of the present invention, which includes a stator 1, a rotor 2, a base 3, a circuit board 4, and a buffer member 5. The rotor 2 is rotatable The ground is coupled to the stator 1, the base 3 is coupled to the stator 1, and the circuit board 4 and the buffer member 5 are disposed on the base 3.

The stator 1 includes an iron core 11, and a coil 12 is wound around an outer periphery of the iron core 11. The iron core 11 can be formed by stacking silicon steel sheets, or integrally formed of a magnetically conductive material. A winding sleeve 13 may be provided on the outer periphery of the iron core 11, and the coil 12 is wound around the winding sleeve 13. In this embodiment, the motor is an outer rotor motor, but the motor may also be an inner rotor motor. The stator 1 may further be provided with a shaft tube 14, and the shaft tube 14 may pass through the iron core 11. The iron core 11 is coupled to the shaft tube 14 via the winding sleeve 13, and a gap G may be formed between an inner peripheral surface of the iron core 11 and an outer peripheral surface of the shaft tube 14.

The rotor 2 includes a rotating shaft 21, a housing 22, and a permanent magnet group 23. The rotating shaft 21 is rotatably combined with a shaft tube 14 of the stator 1 to enable the rotor 2 to rotate relative to the stator 1. The rotating shaft 21 is combined with the housing 22. Generally speaking, the rotating shaft 21 is disposed at a central position of the housing 22. The permanent magnet group 23 is coupled to the casing 22, and the permanent magnet group 21 is disposed toward the iron core 11, so that an air gap can be formed between the permanent magnet group 23 and the iron core 11.

The stator 1 is disposed on the base 3, and the base 3 can be coupled to the outer periphery of the shaft tube 14 of the stator 1. In this embodiment, the base 3 has a partition 31, and one side of the partition 31 forms a receiving space R. In this embodiment, the iron core 11 of the stator 1 may be formed on The other side of the partition plate 31 is such that the iron core 11 and the accommodating space R are respectively located on two sides of the partition plate 31. As a result, since the coil 12 on the outer periphery of the iron core 11 carries a current, and in some embodiments of the present invention, the winding sleeve 13 may also carry a current. The space R is separated, which can provide insulation protection effect to the components in the accommodation space R.

The circuit board 4 may be a printed circuit board or a flexible circuit board for providing electronic circuit components such as a control circuit, a driving circuit, a power conversion circuit, a protection element, or a switching element of the motor. The circuit board 4 is electrically connected to the coil 12 of the stator 1. The circuit board 4 and the buffer The pieces 5 are respectively disposed in the accommodating space R of the base 3, and both sides of the buffer piece 5 abut the partition plate 31 and the circuit board 4 respectively, so as to separate the circuit board 4 and the partition plate 31, so that The circuit board 4 is not in contact with the base 3. In detail, the buffer member 5 can separate the circuit board 4 and the partition plate 31 so that the circuit board 4 and the partition plate 31 maintain a distance H in one of the axial directions of the rotor 2, and the buffer member 5 is made of rubber. It is made of shock-absorbing material such as silicon or silicone. Therefore, the buffer member 5 can block the transmission path of the vibration, and absorb the vibration energy of the circuit board 4 to effectively prevent the vibration of the circuit board 4 from being transmitted to the base 3.

Wherein, the winding sleeve 13 of the stator 1 may be provided with a lead pin 131. The lead pin 131 is electrically connected to the coil 12, and the partition plate 31 may be provided with a through hole 311 that penetrates the partition.板 31 both sides. The lead pin 131 passes through the through hole 311 to extend into the receiving space R of the base 3 and is electrically connected to the circuit board 4. Therefore, since the lead pin 131 is fixed to the winding sleeve 13, the circuit board 4 and the coil 12 of the stator 1 can be electrically connected through the lead pin 131.

With the above structure, when the motor of the embodiment of the present invention is actually used, the base 3 can be combined with a predetermined position (for example, a system case) to fix the position of the motor. The coil 12 of the stator 1 will generate an induced magnetic field after being energized, so that the iron core 11 can magnetically interlink with the permanent magnet group 23 of the rotor 2, and then the rotor 2 can rotate relative to the stator 1.

It is known that the iron core 11 of the stator 1 is liable to generate vibration when the motor of this embodiment is running. Since the stator 1 is connected to the circuit board 4 through the lead pin 131, the vibration generated by the iron core 11 will pass through The lead pins 131 are transmitted to the circuit board 4. However, the two sides of the buffer member 5 abut the partition plate 31 and the circuit board 4 respectively, so that the circuit board 4 does not contact the base 3, and the buffer member 5 can absorb the vibration energy of the circuit board 4, so the The buffer member 5 can effectively prevent the vibration of the circuit board 4 from being transmitted to the base 3. Accordingly, the vibration generated by the stator 1 will not be transmitted to the outside of the motor through the circuit board 4.

According to the foregoing technical concepts, each of the motors of the embodiment of the present invention is enumerated in detail below. Features and explain them one by one:

In this embodiment, the buffer member 5 may be formed in a ring shape. Since the buffer member 5 separates the circuit board 4 from the partition plate 31, by forming the buffer member 5 into a ring shape, a gap can be formed between the circuit board 4 and the partition plate 31 to provide the The space required for the heat dissipation of the electronic circuit components on the circuit board 4 effectively improves the heat dissipation effect of the circuit board 4.

The base 3 further includes a ring wall 32, which is disposed on the partition 31 and extends away from the stator 1 so that the ring wall 32 and the partition 31 can surround the accommodation space R together. The buffer member 5 includes an outer peripheral edge 51, which is connected to two sides of the buffer member 5, and the outer peripheral edge 51 abuts the inner peripheral wall 321 of the annular wall 32 toward the accommodation space R. Thereby, the buffer member 5 can be firmly coupled to the base 3. Wherein, the buffer member 5 may be further provided with a first positioning portion 511 on the outer peripheral edge 51, the ring wall 32 is provided with a second positioning portion 322 on the inner peripheral wall 321, the first positioning portion 511 and the second positioning portion 322 forms a latch to prevent the buffer member 5 from being displaced relative to the base 3.

In this embodiment, the buffer member 5 is provided with at least one convex portion 52 facing one side of the circuit board, and the circuit board 4 is provided with at least one notch 41 corresponding to the at least one convex portion 52. The at least one The convex portion 52 extends into the at least one notch 41. Thereby, the buffer member 5 can position the circuit board 4 so that the circuit board 4 does not contact the ring wall 32 of the base 3 to prevent the circuit board 4 from displacing and contacting the ring wall 32 when it vibrates, ensuring that the vibration will not occur. Passed to the base 3 via the circuit board 4.

Furthermore, the number of the at least one convex portion 52 and the at least one notch 41 may be an even number. Each of the convex portions 52 is extended into each of the notches 41, and one of the convex portions 52 is located in a radial direction of one of the rotors 2. Opposite the other convex portion 52. Thereby, the buffering member 5 is provided with convex portions 52 on the symmetrical sides in the radial direction to position the circuit board 4 respectively, so that the buffering member 5 can position the circuit board 4 surely.

In addition, please refer to Figs. 3 and 4, which are the horses of the second embodiment of the present invention. The difference from the previous embodiment is that a ring flange 53 is provided on one side of the buffer member 5 facing the circuit board 4, and the ring flange 53 can abut the outer periphery of the circuit board 4. Thereby, the buffer member 5 can locate the circuit board 4, and the ring flange 53 can block the circuit board 4 and the ring wall 32 of the base 3 in the radial direction, so as to prevent the circuit board 4 from being displaced when it is shaken. The ring wall 32 is contacted to ensure that vibrations are not transmitted to the base 3 through the circuit board 4. The buffer member 5 may form a shoulder 54 at a position of the ring flange 53 adjacent to the outer peripheral edge 51. The shoulder 54 may be used to carry the circuit board 4 to increase the contact between the buffer member 5 and the circuit board 4. The area further improves the effect of the buffer member 5 absorbing the vibration energy of the circuit board 4.

Please refer to FIG. 1 and FIG. 3 continuously. In this embodiment, the stator 1 is provided with the shaft tube 14. The partition plate 31 of the base 3 may be coupled to the outer periphery of the shaft tube 14 of the stator 1, so that the base 3 is coupled to the stator 1. However, the iron core 11 is coupled to the shaft tube 14 via the winding sleeve 13. In order to avoid the vibration generated by the iron core 11 from being transmitted to the base 3 through the shaft tube 14, an outer periphery of the shaft tube 14 may be provided with a first A shock absorbing member 141 is provided, and the partition plate 31 can be coupled to the outer periphery of the first shock absorbing member 141. The first shock absorbing member 141 may be made of a material with poor rigidity (for example, plastic), and the first shock absorbing member 141 may also be made of a shock absorbing material such as rubber or silicone, such as the buffer member 5. Therefore, by additionally providing the first shock absorbing member 141 between the shaft tube 14 and the partition plate 31, the vibration generated by the iron core 11 can be effectively prevented from being transmitted to the base 3 through the shaft tube 14.

It is worth noting that, because the iron core 11 is coupled to the shaft tube 14 via the winding sleeve 13, the gap G can be formed between the inner peripheral surface of the iron core 11 and the outer peripheral surface of the shaft tube 14. Reduce the amplitude of the vibration generated by the iron core 11 to the shaft tube 14. On the other hand, a second shock absorbing member 142 may be provided on the outer periphery of the shaft tube 14, and the winding sleeve 13 may be coupled to the outer periphery of the second shock absorbing member 142. The second shock absorbing member 142 may also be made of a material with poor rigidity (for example, plastic), and the second shock absorbing member 142 may also be made of a shock absorbing material such as rubber or silicone, such as the buffer member 5. Thereby, by providing the second shock absorbing member 142 between the shaft tube 14 and the winding sleeve 13, the vibration generated by the iron core 11 can be further reduced to the shaft tube 14. Amplitude.

Wherein, when the motor of each embodiment is to be applied to a fan, the outer periphery of the casing 22 of the rotor 2 may be provided with several blades 6. Each of the blades 6 can be integrally formed with the casing 22, or can be combined with the outer periphery of the casing 22 by means of injection coating, etc., but the present invention is not limited thereto. The motor of each embodiment and the plurality of blades 6 may form the fan together, and each of the blades 6 and the rotor 2 is a fan wheel of the fan, so that each of the blades 6 can be used to drive the wind when the rotor 2 rotates To generate airflow.

Please refer to FIG. 5 for a motor according to a third embodiment of the present invention. The base 3 also has a partition 31, and one side of the partition 31 also forms a receiving space R, which is similar to the previous embodiments. The difference is that the iron core 11 of the stator 1 can be formed on the same side of the partition 31 so that the iron core 11 and the accommodation space R are located on the same side of the partition 31. In other words, the present invention is not limited to the embodiment in which the iron core 11 is separated from the accommodating space R by the partition plate 31. In addition, in this embodiment, the base 3 may not need to be provided with the ring wall 32, and the buffer member 5 may be directly coupled to the partition 31.

Please refer to FIG. 6 and FIG. 7 for the motor according to the fourth embodiment of the present invention. The foregoing embodiments are different in that the winding sleeve 13 of the stator 1 is further provided with a positioning member 132. The positioning member 132 may Is a protruding column extending from the winding sleeve 13 toward the partition plate 31 of the base 3; the partition plate 31 may be provided with a positioning hole 312, which may be a through hole or a blind hole, and the positioning member 132 is extended Into the positioning hole 312. Therefore, when the motor of the fourth embodiment is running, even if the vibration generated by the iron core 11 of the stator 1 is large (usually occurring during startup or when the motor has not completely stopped), the positioning member 132 is positioned. In the positioning hole 312, the positioning member 132 can prevent the stator 1 from being displaced relative to the base 3, thereby preventing the guide pin 131 from contacting the partition plate 31 or even being bent by the force of the guide pin 131. , Effectively increase the service life of the motor.

Wherein, in some embodiments of the present invention, the positioning member 132 may be made of a shock-absorbing material such as rubber or silicone; or, the positioning member 132 may be externally covered with a shock-absorbing material (Plastic or metal) cylinder, even if the positioning member 132 contacts the partition plate 31, the vibration generated by the iron core 11 can be effectively prevented from being transmitted from the positioning member 132 to the base 3. On the other hand, in this embodiment, a cushion pad 7 may be additionally provided. The cushion pad 7 is made of a shock-absorbing material such as rubber or silicone, and the cushion pad 7 may be disposed on the partition plate 31 to surround the positioning hole 312. Alternatively, as shown in FIG. 8, the cushion pad 7 may be sleeved on the outer peripheral surface of the positioning member 132. Thus, after the positioning member 132 extends into the positioning hole 312, the cushion pad 7 may be formed between the positioning member 132 and the partition plate 31 to fill the space between the positioning member 132 and the partition plate 31. In order to improve the positioning effect of the positioning member 132, the cushion pad 7 can also block the positioning member 132 and the partition plate 31, effectively preventing the vibration generated by the iron core 11 from being transmitted by the positioning member 132 to the base 3.

Although in the fourth embodiment, a positioning member 132 is provided on the winding sleeve 13, a positioning hole 312 may be provided on the partition plate 31, and the positioning member 132 is inserted into the positioning hole 312 to prevent this. The stator 1 is displaced relative to the base 3. However, in some embodiments of the present invention, the winding sleeve 13 may be provided with a positioning hole, and the partition plate 31 may be provided with a positioning member. Similarly, the positioning member of the partition plate 31 can be extended into the winding member 13. The positioning holes of the winding sleeve 13 prevent the stator 1 from being displaced relative to the base 3.

Please refer to Figs. 9 and 10, which are the motor of the fifth embodiment of the present invention, and the fourth embodiment is that the buffer member 5 is provided with an extension 55 on one side of the partition 31, and the extension The portion 55 is opposite to the positioning hole 312 in the axial direction of the rotor 2. In this embodiment, the positioning hole 312 is a through hole, so that the extension portion 55 can extend into the positioning hole 312 and be formed on the positioning member. 132 and the partition 31. Thereby, the extension portion 55 can also fill the space between the positioning member 132 and the partition plate 31 to enhance the positioning effect of the positioning member 132; and the extension portion 55 can also block the positioning member 132 and the partition plate. 31. The vibration generated by the iron core 11 is effectively prevented from being transmitted from the positioning member 132 to the base 3.

In summary, the motors and fans of the embodiments of the present invention A buffer member 5 is disposed in the accommodating space R, and the two sides of the buffer member 5 can abut the partition plate 31 and the circuit board 4 respectively, so as to separate the circuit board 4 from the partition plate 31 and prevent the circuit board 4 from The base 3 is in contact. Therefore, the buffer member 5 can effectively prevent the vibration of the circuit board 4 from being transmitted to the base 3, thereby ensuring that the vibration generated by the stator 1 will not be transmitted to the outside of the motor through the circuit board 4. According to this, the motor and fan of the embodiments of the present invention do have the effect of reducing the overall vibration of the motor.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

1‧‧‧ stator

11‧‧‧ iron core

12‧‧‧ Coil

13‧‧‧ Winding sleeve

131‧‧‧lead pin

14‧‧‧ shaft tube

141‧‧‧The first shock absorber

142‧‧‧Second shock absorber

2‧‧‧ rotor

21‧‧‧ shaft

22‧‧‧shell

23‧‧‧Permanent magnet set

3‧‧‧ base

31‧‧‧ bulkhead

311‧‧‧through hole

32‧‧‧ ring wall

321‧‧‧Inner peripheral wall

4‧‧‧Circuit Board

41‧‧‧ gap

5‧‧‧ buffer

51‧‧‧outer periphery

52‧‧‧ convex

6‧‧‧ blade

G‧‧‧ Clearance

R‧‧‧ accommodation space

H‧‧‧Pitch

Claims (21)

A motor includes: a stator, the stator includes an iron core, and a coil is provided on the periphery of the iron core; a rotor includes a rotating shaft, the rotating shaft is rotatably coupled to the stator; and a base is coupled to the stator. The stator, and the base has a partition; a circuit board, the circuit board is disposed on one side of the partition, and the circuit board is electrically connected to the coil; and a buffer member, the two sides of the buffer member are abutted respectively The partition and the circuit board prevent the circuit board from contacting the base. The motor according to item 1 of the patent application scope, wherein the stator is provided with a lead pin, the lead pin is electrically connected to the coil, and the lead pin is electrically connected to the circuit board. The motor according to item 2 of the scope of patent application, wherein a winding sleeve is provided on the outer periphery of the iron core, the coil is wound on the winding sleeve, and the lead pin is provided on the winding sleeve. The motor according to item 1 of the scope of patent application, wherein the iron core and the circuit board are respectively located on both sides of the partition. The motor according to item 4 of the scope of patent application, wherein the stator is provided with a lead pin, the lead pin is electrically connected to the coil, the partition plate is provided with a through hole, and the through hole penetrates both sides of the partition plate. The lead pin passes through the through hole to electrically connect the circuit board. The motor according to item 4 of the scope of patent application, wherein the base further comprises a ring wall, which is disposed on the partition and extends away from the stator, and the ring wall and the partition jointly surround a housing. In the space, the buffer member includes an outer peripheral edge, the outer peripheral edge is respectively connected to both sides of the buffer member, and the outer peripheral edge abuts the inner peripheral wall of the annular wall toward the accommodation space. The motor according to item 6 of the scope of patent application, wherein the buffer member is provided with a first positioning portion on the outer peripheral edge, the ring wall is provided with a second positioning portion on the inner peripheral wall, the first positioning portion and the first positioning portion The two positioning portions form latches. The motor according to item 1 of the patent application scope, wherein the buffer member is provided with at least one convex portion facing one side of the circuit board, and the circuit board is provided with at least one notch corresponding in number to the at least one convex portion, At least one convex portion extends into the at least one notch to position the circuit board so that the circuit board does not contact the base. The motor according to item 8 of the scope of patent application, wherein the number of the at least one convex portion and the at least one gap is an even number, each of the convex portions extends into each of the gaps, and one of the convex portions is connected to the rotor One is opposed to the other convex portion in the radial direction. The motor according to item 1 of the patent application scope, wherein the buffer member is provided with a ring flange facing one side of the circuit board, and the ring flange abuts the outer periphery of the circuit board. The motor according to item 9 of the scope of patent application, wherein the buffer member includes an outer periphery, and the buffer member forms a shoulder at a position where the ring flange is adjacent to the outer periphery, and the shoulder carries the circuit board. The motor according to item 3 of the scope of patent application, wherein the stator's winding sleeve is further provided with a positioning member, the partition plate is provided with a positioning hole, and the positioning member extends into the positioning hole. The motor according to item 12 of the scope of patent application, wherein a cushion pad is additionally provided, the cushion pad is made of a shock-absorbing material, and the cushion pad is disposed between the positioning member and the partition. The motor according to item 12 of the patent application scope, wherein the buffer member is provided with an extension portion facing one side of the partition, the positioning hole is a through hole, and the extension portion extends into the positioning hole and is formed at the positioning Pieces and the partition. The motor according to item 3 of the scope of patent application, wherein the winding sleeve of the stator is further provided with a positioning hole, the partition plate is provided with a positioning member, and the positioning member extends into the positioning hole. The motor according to item 15 of the scope of patent application, wherein a cushion pad is additionally provided, the cushion pad is made of a shock-absorbing material, and the cushion pad is disposed between the positioning member and the winding sleeve. The motor according to item 12 or 15 of the scope of the patent application, wherein the positioning member is made of a shock-absorbing material, or the positioning member is a cylinder covered with a shock-absorbing material on the outside. The motor according to any one of claims 1 to 16, wherein the buffer member is formed in a ring shape. The motor according to any one of claims 1 to 16, wherein the circuit board and the partition plate maintain a distance in an axial direction of one of the rotors. The motor according to any one of claims 1 to 16, wherein the buffer member is made of a shock-absorbing material. The motor according to any one of claims 1 to 16 of the scope of patent application, wherein one side of the partition plate forms an accommodating space, and the circuit board and the buffer member are respectively disposed in the accommodating space.