CN2513278Y - Motor - Google Patents

Abstract

The utility model provides a motor structure, including the main shaft, set up the rotor on the main shaft, the first bearing of main epaxial is located to the cover, forms first clearance between it and the rotor, the second bearing of main epaxial is located to the cover to and the cover is located the epaxial fastener of main, forms the second clearance between the two, through first clearance and second clearance, makes between rotor and the first bearing and between second bearing and the fastener not direct contact, and avoids producing the chance of abnormal sound between the motor bearing completely.

Description

motor

Technical field

The utility model relates to a motor, in particular to a motor structure capable of reducing abnormal noise.

Background technique

There are many types of DC motors, among which the single ball bearing and single oil bearing (one ball one sleeve) models generally have abnormal noise problems that are not easy to solve.

At present, some improvement methods have been proposed to solve this abnormal sound problem, as shown in Fig. 1 and Fig. 2 .

Referring first to Fig. 1, a rotating main shaft 11 is provided in the motor 10, and a rotor 12 is arranged on the main shaft 11, and a gasket 13, a ball bearing 14, an oil bearing 15 and an oil bearing 15 are sequentially sleeved on the main shaft 11. C-shaped fastener 16. In addition, a stator 17 , a circuit board 18 , and a bearing seat 19 are provided inside the motor 10 , and a protrusion 191 is provided on the bearing seat 19 to separate the ball bearing 14 and the oil bearing 15 .

The above-mentioned rotor 12 has a hub 121 and a fan blade 122. The hub 121 is sheathed on the main shaft 11, so that the rotor 12 can rotate with the rotation of the main shaft 11. Since the structures of the rotors 12 are similar, the structure of the rotor 12 will be omitted below. Detailed description.

This improved method is to arrange the gasket 13 between the rotor 12 and the bearing 14 to reduce the noise generation; however, although this method has avoided the chance of the rotor 12 and the bearing 14 hitting, the gap between the C-type fastener 16 and the oil bearing 15 Friction can also cause a lot of rattling.

Fig. 2 shows another kind of improved method, is provided with a rotating main shaft 21 in the motor 20, and a rotor 22 is arranged on the main shaft 21, and a ball bearing 24, an oily bearing 25, a pad are sleeved on the main shaft 21 in sequence piece 23 and a C-shaped fastener 26.

This improved method is to set the gasket 23 between the oil bearing 25 and the fastener 26, but since there is no gap between the rotor 22 and the bearing 24, when the rotor 22 rotates rapidly, the vibration in the Z-axis direction will cause the rotor 22 and the ball bearing 24 impact and produce abnormal sound.

Fig. 3 is another form of single ball bearing, single oil bearing motor 30, in which a rotating main shaft 31 is arranged in the motor 30, and a rotor 32 is arranged on the main shaft 31, and a ball bearing is sleeved on the main shaft 31 in sequence 34. A C-shaped ring 36 and an oil-impregnated bearing 35; the difference between this motor 30 and the above two motors is that its main shaft 31 is not of a single diameter, so that the C-shaped ring 36 is arranged between the ball bearing 34 and the oil-impregnated bearing 35 between settings.

This improvement method is to set a push-pull part 33 at the bottom of the rotor 31 to reduce the contact area between the rotor 31 and the bearing 34, so as to reduce the chance of the rotor 31 colliding with the bearing 34, thereby reducing the chance of abnormal noise, but it still cannot completely overcome this problem.

Contents of utility model

The purpose of this utility model is to provide a motor structure in order to solve the above problems, which can completely avoid the generation of abnormal sound in the motor bearing structure.

The purpose of this utility model is achieved by providing a motor, including: a main shaft; a rotor arranged on the main shaft; a first bearing sleeved on the main shaft, forming a first gap between it and the rotor; The second bearing on the main shaft, wherein the first bearing is located between the rotor and the second bearing; and the fastener sleeved on the main shaft, forming a second gap with the second bearing, passing through the first gap and the second gap , so that there is no direct contact between the rotor and the first bearing and between the second bearing and the fastener, so that there will be no abnormal sound.

In the present invention, the motor further includes: a first shock-absorbing member arranged in the first gap, which is located between the rotor and the first bearing; and a second shock-absorbing member arranged in the second gap, which is located in the second bearing Between the fastener and the fastener, the first shock-absorbing piece and the second shock-absorbing piece are respectively an O-ring.

Also in the utility model, the main shaft is provided with a groove for placing a fastener, and the fastener can be a C-shaped ring.

Also in the present invention, the second bearing can be an oil-impregnated bearing.

The utility model also provides a motor, comprising: a base; a main shaft arranged on the base; a rotor arranged on the main shaft; a first bearing sleeved on the main shaft, forming a first gap with the rotor; The second bearing on the main shaft; and the fastener sleeved on the second bearing, forming a second gap with the main shaft and the second bearing, through the first gap and the second gap, the rotor and the first bearing There is no direct contact between the fastener and the main shaft, so there will be no abnormal sound.

Also in the present utility model, the second bearing is provided with a pushing portion to form the second gap.

The utility model also provides a motor, including: a main shaft; a rotor arranged on the main shaft; a set of bearings arranged on the main shaft, and forms a first gap with the rotor; a The fastener is sleeved on the main shaft, and forms a second gap with the bearing part, through the first gap and the second gap, the rotor and the bearing part and the There is no direct contact between the bearing part and the fastener, so no abnormal sound will be generated.

The advantage of the utility model device is that there is a gap between the first bearing and the rotor, and a gap between the fastener and the second bearing or the main shaft, thus avoiding the abnormality between the bearings when the motor is working. sound, the structure is reasonable and reliable.

Description of drawings

Fig. 1 is the sectional view of existing motor;

Fig. 2 is the sectional view of another kind of existing motor;

Fig. 3 is the sectional view of another kind of existing motor;

Fig. 4 is the sectional view of the first embodiment of the utility model motor structure;

Fig. 5 is the sectional view of the second embodiment of the utility model motor structure;

6 is a cross-sectional view of a third embodiment of the motor structure of the present invention;

Fig. 7 is a cross-sectional view of the fourth embodiment of the motor structure of the present invention.

Detailed ways

With reference to Fig. 4, it shows the first embodiment of the motor structure of the present utility model, and motor structure 40 comprises a base 401, a main shaft 41, a rotor 42, a first bearing 43, a second bearing 45 and a fastener 46.

The base 401 constitutes the base of the motor 40 . The main shaft 41 is rotatably disposed on the base 401 and has a groove 411 ; the rotor 42 is disposed on the main shaft 41 and rotates through the rotation of the main shaft 41 .

The first bearing 43 is sleeved on the main shaft 41, which is located between the rotor 42 and the second bearing 45, and forms a first gap 44 with the rotor 42; the second bearing 45 is sleeved on the main shaft 41, and the fastener 46 It is sleeved on the groove 411 of the main shaft 41 to form a second gap 47 with the second bearing 45, and the fastener 46 can be a C-shaped ring.

As mentioned above, by forming the first gap 44 between the first bearing 43 and the rotor 42, and forming the second gap 47 between the second bearing 45 and the fastener 46, between the rotor 42 and the first bearing 43, and There is no direct contact between the second bearing 45 and the fastener 46, so no abnormal sound will be generated.

It should be noted that since there is no direct contact between the rotor 42 and the first bearing 43, and between the second bearing 45 and the fastener 46, the positioning of the rotor 42 at this time is through the magnet 421 of the inner ring of the rotor 42 and the stator 412. The magnetic force is balanced.

Fig. 5 shows the second embodiment of the motor structure 40 of the present utility model, which is located on the first gap 44 between the rotor 42 and the first bearing 43, and a first shock-absorbing member 48, which can be an O-ring , thereby absorbing the vibration of the rotor 42 on the Z axis, so as to avoid generation of abnormal sound.

Also, Fig. 6 shows the third embodiment of the motor structure 40 of the present invention, in addition to adding a first shock-absorbing member 48 on the first gap 44 as shown in Fig. 5, between the second bearing 45 and the fastener 46 A second shock-absorbing member 49, which can be an O-ring, is arranged on the second gap 47, thereby avoiding abnormal noise.

In addition, in this embodiment, the second bearing can be an oil bearing, and the first bearing can be a ball bearing.

With reference to Fig. 7, it shows the fourth embodiment of the motor structure of the present utility model, and motor structure 50 comprises a base 501, a main shaft 51, a rotor 52, a first bearing 53, a shock-absorbing member 58, a second bearing 55 and a fastener 56.

The base 501 constitutes the base of the motor 50 , and the main shaft 51 is rotatably disposed on the base 501 ; the rotor 52 is disposed on the main shaft 51 and rotates through the rotation of the main shaft 51 .

The first bearing 53 is sleeved on the main shaft 51 and forms a first gap 54 with the rotor 52 ; the shock absorbing member 58 is disposed on the first gap 54 between the rotor 52 and the first bearing 53 .

The second bearing 55 is sleeved on the base 501 and has a push-pull part 551. The fastener 56 is sleeved on the main shaft 51 and is located between the first bearing 53 and the second bearing 55; the fastener 56, the second bearing 55 A second gap 57 is formed between the main shaft 51 and the pushing portion 551 .

As mentioned above, by setting the shock absorbing member 58 between the first bearing 53 and the rotor 52, and forming the second gap 57 between the fastener 56, the main shaft 51 and the second bearing 55, the rotor 52 and the first bearing 53 No direct contact, and no contact between the fastener 56 and the main shaft 51 when the rotor 52 rotates, so no abnormal sound will be generated.

It should be noted that in the above two embodiments, two bearings are provided, but in actual application, the features of the present utility model can also be applied to a motor structure with a number of bearings other than two; for example, in the rotor and the fastener There is only one bearing part between them, as long as a gap is formed between the bearing part and the rotor, and between the bearing part and the fastener, or shock-absorbing parts are provided, so that the gap between the rotor and the bearing part, and between the bearing part and the fastener There is no direct contact between them, and there will be no abnormal sound.

Claims (22)

1. a motor is characterized in that, comprising: a main shaft; One is arranged at the rotor on the described main shaft; One be sheathed on clutch shaft bearing on the described main shaft, and and described rotor between form one first gap; One is sheathed on second bearing on the described main shaft, and wherein said clutch shaft bearing is between described rotor and described second bearing; An and fastener that is sheathed on the described main shaft, and and formation one second gap between described second bearing, by described first gap and described second gap, so that directly do not contact between described rotor and the described clutch shaft bearing and between described second bearing and the described fastener, and can not produce different sound.

2. motor as claimed in claim 1 is characterized in that, also comprises: one first shock-absorbing piece, be arranged at described first gap, and between described rotor and described clutch shaft bearing.

3. motor as claimed in claim 2 is characterized in that, described first shock-absorbing piece is an O type ring.

4. as claim 1,2 or 3 described motors, it is characterized in that, also comprise: one second shock-absorbing piece, be arranged at described second gap, and between described second bearing and described fastener.

5. motor as claimed in claim 4 is characterized in that, described second shock-absorbing piece is an O type ring.

6. motor as claimed in claim 5 is characterized in that, described main shaft is provided with one in order to place the groove of described fastener.

7. motor as claimed in claim 6 is characterized in that, described fastener is a C type ring.

8. motor as claimed in claim 7 is characterized in that, described clutch shaft bearing is that a ball bearing and described second bearing are an oiliness bearing.

9. a motor is characterized in that, comprising: a pedestal; One is arranged at the main shaft on the described pedestal; One is arranged at the rotor on the described main shaft; One is sheathed on the clutch shaft bearing on the described main shaft, and and described rotor between form one first gap; One is sheathed on second bearing on the described pedestal; An and fastener that is sheathed on described second bearing, and and formation one second gap between described main shaft and described second bearing, by described first gap and described second gap, so that directly do not contact between described rotor and the described clutch shaft bearing and between described fastener and the described main shaft, and can not produce different sound.

10. motor as claimed in claim 9 is characterized in that, also comprises: a shock-absorbing piece, be arranged at described first gap, and between described rotor and described clutch shaft bearing.

11. motor configuration as claimed in claim 10 is characterized in that, described shock-absorbing piece is an O type ring.

12., it is characterized in that described second bearing is provided with one in order to form the portion of pulling out that pushes away in described second gap as claim 9,10 or 11 described motors.

13. motor as claimed in claim 12 is characterized in that, described clutch shaft bearing is that a ball bearing and described second bearing are an oiliness bearing.

14. a motor is characterized in that, comprising: a main shaft; One is arranged at the rotor on the described main shaft; One is sheathed on the bearing portion on the described main shaft, and and described rotor between form one first gap; One is sheathed on the fastener on the described main shaft, and and form one second gap between the described bearing portion, by described first gap and described second gap, make between described rotor and the described bearing portion and directly contact between described bearing portion and the described fastener, and can not produce different sound.

15. motor as claimed in claim 14 also comprises: one first shock-absorbing piece, be arranged at described first gap, and between described rotor and described bearing portion.

16. motor as claimed in claim 15 is characterized in that, described first shock-absorbing piece is an O type ring.

17. as claim 14,15 or 16 described motors, it is characterized in that, also comprise: one second shock-absorbing piece, be arranged at described second gap, and between described bearing portion and described fastener.

18. motor as claimed in claim 17 is characterized in that, described second shock-absorbing piece is an O type ring.

19. motor as claimed in claim 18 is characterized in that, described main shaft is provided with one in order to place the groove of described fastener.

20. motor as claimed in claim 19 is characterized in that, described fastener is a C type ring.

21. motor as claimed in claim 20 is characterized in that, described bearing portion is an oiliness bearing or ball bearing.

22., it is characterized in that described bearing portion is provided with one in order to form the portion of pulling out that pushes away in described second gap as claim 14,15 or 16 described motors.

Images