TW201701567A - Motor with thrust bearing and thrust bearing assembly thereof and method of oiling for the motor with thrust bearing - Google Patents

Abstract

A motor with thrust bearing and thrust bearing assembly thereof and method of oiling for the motor with thrust bearing are disclosed to solve the problem about inconvenience of oiling to the former motor with thrust bearing. The motor with thrust bearing has a base, a thrust bearing assembly, a stator and a hub. Therein, the thrust bearing assembly has a bearing sleeve, a thrust bearing and a shaft with oiling hole. The oiling hole of the shaft can promote the efficiency of oiling to the inside of the bearing sleeve and fill each gap between the bearing sleeve's interior wall and the thrust bearing with oil.

Description

Motor with thrust bearing and its thrust bearing set, and the oil filling side of the motor of the thrust bearing law

The present invention relates to a motor having a thrust bearing, and more particularly to a motor having a thrust bearing that can quickly perform a lubricating oil filling operation and a method of oiling the same.

Referring to FIG. 1 , a conventional motor 9 having a thrust bearing is disclosed. The motor 9 includes a base 91 , a bearing sleeve 92 , a stator 93 , a rotating member 94 , a thrust bearing 95 , and A hub 96. The bearing sleeve 92 is provided with the bearing sleeve 92, and the bearing sleeve 92 is respectively provided with an opening portion 921 and a closing portion 922; the stator 93 is coupled to the bearing sleeve 92; the rotating member 94 is coupled to the inside of the bearing sleeve 92. The rotating member 94 includes a rotating shaft 941 and a limiting portion 942. One end of the rotating shaft 941 is coupled to the limiting portion 942. The thrust bearing 95 is disposed between the inner peripheral wall of the bearing sleeve 92 and the rotating shaft 941. The rotating member 94 is prevented from being released from the bearing sleeve 92; the hub 96 is coupled to the other end of the rotating shaft 941, and the hub 96 is provided with a permanent magnet 961 opposite to the stator 93. An embodiment similar to the conventional motor 9 having a thrust bearing has been disclosed in the patent application No. CN203707950U, "Motor with Thrust Bearing", and the like.

In the assembly process, the motor 9 having the thrust bearing is required to inject a lubricating oil into the bearing sleeve 92 to ensure smooth rotation between the rotating shaft 941 of the rotating member 94 and the thrust bearing 95. . However, a motor having a thrust bearing is known 9 When the lubricating oil is directly injected through the opening portion 921 of the bearing sleeve 92, the lubricating oil does not easily penetrate from the top to the bottom into the gap between the rotating member 94 and the thrust bearing 95, in addition to causing the lubricating oil to be oiled. In addition, the convenience of the operation is not good, and the lubricating oil is not easily filled uniformly in the inner wall surface of the bearing sleeve 92, the gap between the rotating shaft 941 and the thrust bearing 95, and the lubrication is insufficient, so that the lubricating oil is easily affected. The operational quality of the motor 9 further reduces the useful life of the motor 9.

The present invention provides a motor having a thrust bearing that allows lubricating oil to be injected into a thrust bearing set to quickly complete the injection of lubricating oil.

The present invention provides a thrust bearing set of a motor having a thrust bearing, which ensures that the lubricating oil is evenly filled in a gap between the components inside the thrust bearing set after the lubricating oil is injected.

The present invention provides an oil filling method for a motor having a thrust bearing, which can improve the convenience of a lubricating oil injection operation by the above-described thrust bearing set.

The motor with the thrust bearing of the present invention comprises a base, a thrust bearing set, a stator and a hub. The base is provided with a joint portion; the thrust bearing set includes a bearing sleeve, a thrust bearing and a rotating shaft, the bearing sleeve is combined with the joint of the base, the thrust bearing is coupled with the rotating shaft and is located inside the bearing sleeve The rotating shaft has a first end and a second end. The first end is located outside the bearing sleeve, and the second end faces the inside of the bearing sleeve. The rotating shaft is provided through the first end and the second end. An oil injection hole; the stator is coupled to the base or the thrust bearing set; the hub is coupled to the first end of the rotating shaft, and the hub is provided with a permanent magnet opposite to the stator.

Wherein, the oil hole of the rotating shaft is provided with an oil piece.

Wherein, the oil seal member is a one-piece body made of a material having a capillary gas permeable function.

Wherein, the opposite ends of the bearing sleeve are respectively provided with an opening portion and a closing portion, and the bearing sleeve comprises an outer sleeve, a cover and a cover, wherein the outer sleeve is a hollow tubular body formed with an opening at opposite ends. The cover and the cover are coupled to the opposite ends of the outer sleeve, the opening is disposed on the cover, one end of the rotating shaft extends through the opening, the cover constitutes the closing portion; The outer circumference and the outer circumference of the cover may be selected to be uncut.

Wherein, the outer kit and the cover are integrally formed as a single member.

The thrust bearing has a first end surface and a second end surface. The thrust bearing is provided with a positioning hole penetrating the first end surface and the second end surface, and the rotating shaft is coupled to the positioning hole.

Wherein the first end surface of the thrust bearing faces the opening portion, the second end surface of the thrust bearing faces the closing portion, and a difference between the second end of the rotating shaft and the second end surface of the thrust bearing is formed. The step is used to form an oil storage space.

Wherein, the outer side wall of the thrust bearing is provided with a plurality of dynamic pressure grooves.

An oil filling method for a motor having a thrust bearing, the method comprising: preparing a bearing sleeve, a thrust bearing and a rotating shaft having an oil filling hole, assembling the bearing sleeve, the thrust bearing and the rotating shaft into a thrust bearing group And injecting a lubricating oil into the bearing sleeve through the oil hole, so that the lubricating oil uniformly fills the gap between the inner side wall of the bearing sleeve and the thrust bearing.

Wherein, the lubricating oil is injected into the bearing housing through the oil injection hole of the rotating shaft, and the oil filling hole is closed.

The motor with the thrust bearing of the present invention and the oil filling method thereof are designed by the oil hole of the rotating shaft for the motor assembly process, and the lubricating oil can be quickly injected into the bearing sleeve to ensure that the lubricating oil can be evenly filled. In the gap between the inner side wall of the bearing sleeve and the thrust bearing, the utility model has the advantages of improving the assembly of the motor and the convenience of oiling operation, improving the rotation stability of the motor and increasing the service life of the motor.

〔this invention〕

1‧‧‧Base

1a‧‧‧Substrate Department

1b‧‧‧Sleeve

11‧‧‧Combination Department

2‧‧‧ thrust bearing set

21‧‧‧ bearing sleeve

21a‧‧‧outer kit

21b‧‧‧ cover

21c‧‧‧ Cover

211‧‧‧ openings

212‧‧‧Closed Department

22‧‧‧ thrust bearing

221‧‧‧ dynamic pressure ditch

222‧‧‧ first end face

223‧‧‧second end face

224‧‧‧Positioning holes

23‧‧‧ shaft

231‧‧‧ first end

232‧‧‧ second end

233‧‧‧ oil hole

24‧‧‧ oil-filled parts

3‧‧‧ Stator

31‧‧‧矽Steel sheet

32‧‧‧ coil

4‧‧·wheels

41‧‧‧ permanent magnet

D‧‧‧ step difference

S‧‧‧ oil storage space

O‧‧‧Lubricating oil

[study]

9‧‧‧Motor

91‧‧‧Base

92‧‧‧ bearing sleeve

921‧‧‧ openings

922‧‧‧Department

93‧‧‧ Stator

94‧‧‧Rotating parts

941‧‧‧ shaft

942‧‧‧Limited

95‧‧‧ thrust bearing

96‧‧·wheels

961‧‧‧ permanent magnet

Fig. 1 is a sectional view showing a combination of a conventional motor having a thrust bearing.

Fig. 2 is a sectional view showing the combination of the motor having the thrust bearing of the present invention.

Fig. 3 is an exploded perspective view showing the thrust bearing assembly of the motor having the thrust bearing of the present invention.

Fig. 4 is a sectional view showing the combination of another embodiment of the motor having the thrust bearing of the present invention.

Fig. 5a is a reference view (I) of the state of use of the oil filling method of the motor having the thrust bearing of the present invention.

Fig. 5b is a reference view (2) of the state of use of the oil filling method of the motor having the thrust bearing of the present invention.

Fig. 5c is a reference view (3) of the state of use of the oil filling method of the motor having the thrust bearing of the present invention.

Fig. 5d is a reference view (4) of the state of use of the oil filling method of the motor having the thrust bearing of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to FIG. 2, the motor having the thrust bearing of the present invention includes at least a base 1, a thrust bearing set 2, a stator 3, and a hub 4. The thrust bearing set 2 is coupled to the base 1 , which can be selectively coupled to the base 1 or the thrust bearing set 2 , the hub 4 being coupled to the thrust bearing set 2 .

The base 1 is provided with a joint portion 11 which can be variously designed to be combined with the thrust bearing set 2; as in the embodiment shown in FIG. 2, the base 1 can include a base portion. 1a and a sleeve portion 1b, the sleeve portion 1b can be integrally or detachably coupled to the center of the substrate portion 1a, and the sleeve portion 1b is provided with a through hole extending axially, the base 1 The joint portion 11 is a perforation of the sleeve portion 1b, and the perforation can be combined by the thrust bearing set 2.

The thrust bearing assembly 2 is coupled to the joint portion 11 of the base 1, and the thrust bearing assembly 2 includes a bearing sleeve 21, a thrust bearing 22 and a rotating shaft 23. The bearing sleeves 21 are respectively provided with an opening portion 211 and a closing portion 212, and the bearing sleeve 21 may have a joint portion 11 at one end of the closing portion 212 coupled to the base 1; wherein the bearing sleeve 21 may be Various structural designs are provided for the thrust bearing 22 and the rotating shaft 23 to be coupled, and the present invention does not limit the appearance and structural composition thereof. In the embodiment shown in Figures 2 and 3, the bearing sleeve 21 comprises an outer sleeve 21a, a cover 21b and a cover 21c, the outer sleeve 21a being a hollow tubular body having an opening formed at both ends. Therefore, the thrust bearing assembly 2 can be assembled into the outer sleeve 21a after the thrust bearing 22 and the rotating shaft 23 are assembled, and the cover 21b and the cover 21c can be combined. The welding device or the like is disposed at the opposite ends of the outer sleeve 21a; wherein the opening portion 211 is disposed on the cover 21b for extending one end of the rotating shaft 23, and the cover 21c constitutes the closing portion 212 for preventing The thrust bearing 22 and the rotating shaft 23 are detached from the outer sleeve 21a for improving the assembly convenience of the thrust bearing set 2. Alternatively, as shown in FIG. 4, the outer sleeve 21a and the cover 21c may be integrally formed as a single member to reduce the structural complexity of the thrust bearing set 2; and the outer circumference of the outer sleeve 21a and the outer periphery The outer circumference of the cover 21b may also be selected to be uncut to perform the welding operation (such as lightning welding, etc.) of the outer sleeve 21a and the cover 21b.

Referring to FIGS. 2 and 3, the thrust bearing 22 of the thrust bearing set 2 may be disposed inside the bearing sleeve 21. The outer side wall of the thrust bearing 22 is preferably provided with a plurality of dynamic pressure grooves 221. When the lubricating oil O is attached to the outer side wall of the thrust bearing 22, the design of the dynamic pressure groove 221 makes it easier to form an outer side wall of the thrust bearing 22 and the inner side wall of the bearing sleeve 21. The oil film layer, when the thrust bearing 22 is rotated, can reduce the frictional resistance between the thrust bearing 22 and the inner side wall of the bearing sleeve 21 to improve the rotation stability. Moreover, the thrust bearing 22 has a first end surface 222 and a second end surface 223. The first end surface 222 The second end surface 223 faces the closing portion 212, and the thrust bearing 22 is provided with a positioning hole 224 extending through the first end surface 222 and the second end surface 223; the rotating shaft 23 is coupled to the positioning The hole 224, the thrust bearing 22 can be located between the bearing sleeve 21 and the rotating shaft 23, and the fixing shaft 23 and the positioning hole 224 can be fixed by bonding, welding or clamping, etc., and the invention is not limited thereto; The thrust bearing 22 and the rotating shaft 23 are coupled to each other and can be rotated together.

Referring to FIGS. 2 and 3, the rotating shaft 23 has a first end 231 and a second end 232. After the rotating shaft 23 extends through the opening 211, the first end 231 can be located at the bearing. The outer end of the sleeve 21 is opposite to the inside of the bearing sleeve 21 (ie, facing the closing portion 212), and the rotating shaft 23 is further provided with an oil filling hole 233 extending through the first end 231 and the second end 232. To perform the oil filling operation of the above lubricating oil O (for details, refer to the following description). Moreover, the second end 232 of the rotating shaft 23 and the second end surface 223 of the thrust bearing 22 may be selected to be aligned or not. The present invention is not limited; in this embodiment, the second end 232 of the rotating shaft 23 is A difference D is formed between the second end faces 223 of the thrust bearing 22, and the step D can facilitate the welding operation of the rotating shaft 23 and the thrust bearing 22 (such as lightning welding, etc.), and can also be used to form a storage. The oil space S is used to increase the oil storage capacity of the motor having the thrust bearing of the present invention.

The stator 3 may be selectively coupled to the base 1 or the bearing sleeve 21, and the stator 3 is of various structural designs capable of driving the rotation of the hub 4; as in the embodiment shown in FIG. 2, the stator 3 is sleeved. The outer peripheral wall of the bearing sleeve 21 of the above-mentioned thrust bearing set 2 is combined, and the stator 3 includes a plurality of silicon steel sheets 31 (which may also be a single silicon steel sheet) and a coil 32, and the plurality of silicon steel sheets 31 are stacked on each other. The coil 32 is wound and coupled to the plurality of silicon steel sheets 31 stacked and bonded to each other.

The hub 4 can be coupled to the first end 231 of the rotating shaft 23 by means of welding, bonding, locking or tight fitting. The hub 4 is provided with a permanent magnet 41 opposite to the stator 3. Moreover, the permanent magnet 41 has an air gap between the stator 3 and the coil 32. After the electricity is generated, an alternating magnetic field can be generated through the air gap to drive the hub 4, the thrust bearing 22 of the thrust bearing set 2, and the rotating shaft 23 to rotate (the detailed driving mode and principle of the stator 3 and the permanent magnet 41 are Those skilled in the art will understand that, without further elaboration, a motor rotation actuation function is provided.

The oil filling method of the motor having the thrust bearing of the present invention comprises the steps of: preparing the bearing sleeve 21, the thrust bearing 22 and the rotating shaft 23 having the oil filling hole 233 as shown in FIGS. 5a to 5c, and The bearing sleeve 21, the thrust bearing 22 and the rotating shaft 23 are assembled into the thrust bearing group 2; further, as shown in Fig. 5d, the lubricating oil O is injected into the bearing housing 21 via the oil filling hole 233, Therefore, in the process of continuously injecting the lubricating oil O, the lubricating oil O can be injected into the bottom of the bearing sleeve 21 in the direction of the second end 232 of the rotating shaft 23 in advance, and then the rotating shaft 23 is used. The second end 232 gradually makes the lubricating oil O evenly fill the gap between the inner side wall of the bearing sleeve 21 and the thrust bearing 22 toward the first end 231. Preferably, after the lubricating oil O is injected into the bearing housing 21 via the oil filling hole 233, the oil filling hole 233 may be further closed to prevent the lubricating oil O from overflowing the outside of the bearing sleeve 21 via the oil filling hole 233; In detail, the motor having the thrust bearing of the present invention can be provided with an oil member 24 on the oil injection hole 233 of the rotating shaft 23, the oil sealing member 24 can be adjacent to the first end 231 of the rotating shaft 23, and the oil sealing member Preferably, a piece of material having a capillary permeable function is used to provide a better oil seal. Therefore, referring to FIG. 2, the thrust bearing group 2 that completes the oiling operation can be further assembled with the base 1, the stator 3, and the hub 4 to constitute the thrust bearing of the present invention. motor.

The motor with the thrust bearing of the present invention and the oil filling method thereof are designed by the oil injection hole 233 of the rotating shaft 23, and the lubricating oil O can be quickly injected into the bearing housing 21 so that the lubricating oil O can uniformly fill the bearing. In the gap between the inner side wall of the sleeve 21 and the thrust bearing 22, in addition to improving the convenience of the oil filling operation in the assembly process of the motor, the rotation stability after the assembly of the motor can be improved to increase the use of the motor. life. Furthermore, the thrust shaft of the present invention The assembly 2 can constitute a single component after the assembly and oiling operations are completed in advance, whereby the thrust bearing assembly 2 can be coupled to the base 1 and the stator 3 and the hub 4 can be assembled. The assembly work of the motor is completed, and therefore, the assembly convenience can be improved.

In summary, the motor with the thrust bearing of the present invention and the oil filling method thereof can be designed by the oil injection hole 233 of the rotating shaft 23 to quickly inject the lubricating oil O into the bearing sleeve 21 during the motor assembly process. And ensuring that the lubricating oil O is evenly filled in the gap between the inner side wall of the bearing sleeve 21 and the thrust bearing 22, thereby achieving the convenience of lifting motor assembly and oiling operation, improving the rotational stability of the motor, and increasing the motor. Life expectancy and many other effects.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧Base

1a‧‧‧Substrate Department

1b‧‧‧Sleeve

11‧‧‧Combination Department

2‧‧‧ thrust bearing set

21‧‧‧ bearing sleeve

21a‧‧‧outer kit

21b‧‧‧ cover

21c‧‧‧ Cover

211‧‧‧ openings

212‧‧‧Closed Department

22‧‧‧ thrust bearing

222‧‧‧ first end face

223‧‧‧second end face

224‧‧‧Positioning holes

23‧‧‧ shaft

231‧‧‧ first end

232‧‧‧ second end

233‧‧‧ oil hole

24‧‧‧ oil-filled parts

3‧‧‧ Stator

31‧‧‧矽Steel sheet

32‧‧‧ coil

4‧‧·wheels

41‧‧‧ permanent magnet

D‧‧‧ step difference

S‧‧‧ oil storage space

O‧‧‧Lubricating oil

Claims (20)

A motor having a thrust bearing, comprising: a base, the base is provided with a joint; a thrust bearing set, the thrust bearing set comprises a bearing sleeve, a thrust bearing and a rotating shaft, the bearing sleeve is combined a joint of the base, the thrust bearing is coupled to the rotating shaft and located inside the bearing sleeve, the rotating shaft has an opposite first end and a second end, the first end is located outside the bearing sleeve, the second end Facing the inside of the bearing sleeve, the rotating shaft is provided with an oiling hole penetrating the first end and the second end; the stator is coupled to the base or the thrust bearing set; and a hub, the hub is coupled to the above A first end of the rotating shaft, the hub being provided with a permanent magnet opposite the stator. A motor having a thrust bearing according to claim 1, wherein the oil hole of the rotating shaft is provided with an oil member. A motor having a thrust bearing according to claim 2, wherein the oil seal member is a one-piece body made of a material having a capillary gas permeable function. The motor having a thrust bearing according to claim 1, wherein the opposite ends of the bearing sleeve are respectively provided with an opening portion and a closing portion, and the bearing sleeve comprises an outer sleeve, a cover and a cover. The outer sleeve is a hollow tube body having an opening formed at opposite ends thereof, the cover and the cover are coupled to opposite ends of the outer sleeve, the opening portion is disposed on the cover, and one end of the rotating shaft is extended An opening that constitutes the closure. A motor having a thrust bearing according to claim 4, wherein the outer kit and the cover are integrally formed as a single member. A motor having a thrust bearing according to claim 4, wherein the outer periphery of the outer sleeve and the outer periphery of the cover are not aligned. The motor having a thrust bearing according to claim 4, wherein the thrust bearing has a first end surface and a second end surface, and the thrust bearing is provided through the first end surface and the second end a positioning hole of the end surface, wherein the rotating shaft is coupled to the positioning hole. The motor having a thrust bearing according to claim 7, wherein the first end surface of the thrust bearing faces the opening, the second end surface of the thrust bearing faces the closing portion, and the second shaft A difference is formed between the end and the second end surface of the thrust bearing, the difference being used to form an oil storage space. A motor having a thrust bearing according to claim 1, wherein the thrust bearing has a plurality of dynamic pressure grooves on the outer side wall. A thrust bearing set of a motor having a thrust bearing, comprising a bearing sleeve, a thrust bearing and a rotating shaft, the thrust bearing being coupled to the rotating shaft and located inside the bearing sleeve, the rotating shaft having a first end and a second end, the first end is located outside the bearing sleeve, the second end is facing the inside of the bearing sleeve, and the rotating shaft is provided with an oil filling hole extending through the first end and the second end. A thrust bearing set of a motor having a thrust bearing according to claim 10, wherein the oil hole of the rotating shaft is provided with an oil member. A thrust bearing set of a motor having a thrust bearing according to claim 11, wherein the oil seal member is a one-piece body made of a material having a capillary gas permeable function. The thrust bearing set of the motor with a thrust bearing according to claim 10, wherein the opposite ends of the bearing sleeve are respectively provided with an opening portion and a closing portion, and the bearing sleeve comprises an outer sleeve and a set a cover and a cover, the outer sleeve is a hollow tubular body having an opening formed at opposite ends, the cover and the cover are coupled to opposite ends of the outer sleeve, the opening is disposed on the cover, the rotating shaft One end penetrates the opening, and the The cover constitutes the closure. A thrust bearing set of a motor having a thrust bearing according to claim 13, wherein the outer kit and the cover are integrally formed as a single member. A thrust bearing set of a motor having a thrust bearing according to claim 13 wherein the outer periphery of the outer sleeve and the outer periphery of the cover are not aligned. The thrust bearing set of the motor with a thrust bearing according to claim 13 , wherein the thrust bearing has a first end surface and a second end surface, and the thrust bearing is provided with the first end a positioning hole of the end surface and the second end surface, wherein the rotating shaft is coupled to the positioning hole. The thrust bearing set of the motor having a thrust bearing according to claim 16, wherein the first end surface of the thrust bearing faces the opening, and the second end surface of the thrust bearing faces the closing portion, A difference is formed between the second end of the rotating shaft and the second end surface of the thrust bearing, and the difference is used to form an oil storage space. A thrust bearing set of a motor having a thrust bearing according to claim 10, wherein the outer side wall of the thrust bearing is provided with a plurality of dynamic pressure grooves. An oil filling method for a motor having a thrust bearing, the method comprising: preparing a bearing sleeve, a thrust bearing and a rotating shaft having an oil filling hole, assembling the bearing sleeve, the thrust bearing and the rotating shaft into a thrust bearing group And injecting a lubricating oil into the bearing sleeve through the oil injection hole of the rotating shaft, so that the lubricating oil is evenly filled in the gap between the inner side wall of the bearing sleeve and the thrust bearing. The oil filling method of a motor having a thrust bearing according to claim 19, wherein the lubricating oil is injected into the bearing housing through an oil injection hole of the rotating shaft to close the oil filling hole.