JP3086354U - Bearing structure of rotating shaft of electric motor - Google Patents

Abstract

(57) Abstract: A rotating shaft bearing structure for an electric motor in which an end surface of a rotating shaft can abut against a supporting member, and the supporting member is firmly connected to an inner diameter of a shaft tube and can be positioned. It is something to offer. A bearing is provided on an inner peripheral wall of a shaft tube, and a sealing member made of a metal material is tightly coupled to one end of the shaft tube.
A support member made of a friction-resistant non-metallic material is supported by the sealing member, and a contact portion is formed on the support member, and the contact portion is brought into contact with one end of a rotating shaft pivotally attached to the bearing. Is configured.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bearing structure for a rotating shaft of an electric motor.In particular, the end surface of the rotating shaft provided on the rotor of the electric motor comes into contact with a supporting member, so that the rotation of the rotor can be further stabilized. The present invention relates to a bearing structure for a rotating shaft of a motor that can be used.

[0002]

[Prior art]

 Conventionally, this type is as follows.

[0003] In the patent application No. 409796 of Taiwan Patent Application "Ultra-thin heat dissipating fan fan wheel pivot structure" previously filed by the applicant of the present invention, a shaft tube, a stator coil seat, a circuit board and A balancing piece is provided. One or two bearings are installed in the shaft tube, and the shaft holes of the bearings are used to pivotally connect the shaft of the fan wheel. The end surface of the shaft is abutted against the shaft tube sealing member, and the fan ring can rotate in a fixed position by guiding the annular magnet of the fan ring to the stator coil seat and attracting the balance piece. It is configured.

[0004]

[Problems to be solved by the invention]

 In the conventional ultra-thin radiating fan fan pivoting structure described above, if the shaft tube sealing member is made of a metal material, the shaft tube sealing member is relatively more compact. Although good coupling can be provided, noise due to friction is generated when the shaft end face of the fan wheel rotates in contact with the shaft pipe sealing member. On the other hand, if the shaft tube sealing member is made of a non-metallic material, the noise due to friction can be suppressed when the shaft end surface of the fan wheel rotates in contact with the shaft tube sealing member. There was a problem that the fitting of the shaft tube sealing member and the shaft tube manufactured from the material could not be applied by the interference fit method.

The present invention has been devised in view of such a problem, and an object of the invention is to enable an end face of a rotating shaft to abut on a support member, and to support the shaft member with a shaft tube. An object of the present invention is to provide a bearing structure of a rotating shaft of a motor that can be firmly connected to an inner diameter and can be localized.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the bearing structure of the rotating shaft of the electric motor according to the present invention is as follows. That is, the bearing structure of the rotating shaft of the electric motor includes the shaft tube, the sealing member, and the support member. At least one bearing is provided on the inner peripheral wall of the shaft tube so that the rotating shaft is pivotally attached. The sealing member is made of a metal material and is tightly coupled to one end of the shaft tube. The support member is made of a friction-resistant non-metallic material and is provided inside one end of the shaft tube and supported by the sealing member. A contact portion is formed on the support member, the periphery of the contact portion is formed on an annular wall, and the contact portion contacts one end of the rotating shaft.

Further, the bearing structure of the rotating shaft of the electric motor according to the present invention can be configured as follows. 1. A recess is formed in the sealing member, an annular wall is formed around the recess, and a support member can be inserted into the recess. 2. The annular wall around the abutting portion of the support member is composed of a plurality of valve pieces, and when the support member is installed inside the shaft tube, the valve piece is bent and the inner peripheral wall of the concave hole of the sealing member is formed. It is formed so as to be closely adhered to. 3. The range surrounded by the annular wall of the support member is formed to be larger than the outer diameter of the rotating shaft. 4. The support member has a container shape such as a cup shape or a bowl shape. 5. The support member is formed in a hat-like shape such as an inverted silk hat or a mountain hat, and a contact portion and an annular lip are formed on the support member. 6. The annular lip of the support member is located on the annular wall of the sealing member.

[0008]

[Embodiment of the invention]

 An embodiment according to the present invention will be described below with reference to the drawings.

[0009]

Embodiment 1 FIG. 1 is an exploded perspective view showing a bearing structure of a rotating shaft of an electric motor according to Embodiment 1 of the present invention. The bearing structure of the rotating shaft of the electric motor according to the present embodiment is mainly composed of members such as the shaft tube 1, the sealing member 2, and the support member 3.

The shaft tube 1 can be formed from a conventional metal tube, and at least one bearing 11 is fitted on the inner peripheral wall of the shaft tube 1, and the rotating shaft 10 of the rotor is rotated by the bearing 11. Can be supported. Further, the rotation shaft 10 is locked by the locking member 12, so that the rotation shaft 10 can be prevented from coming off. The other end face of the shaft tube 1 is joined by a sealing member 2.

The sealing element 2 is made of a metal material, so that the sealing element 2 and the shaft tube 1 are tightly connected in an interference-fit manner. A recess 21 is formed in the sealing member 2, and an annular wall 22 is formed around the recess 21 of the sealing member 2.

The support member 3 is made of a friction-resistant non-metallic material. The support member 3 has a contact portion 31 formed thereon, and the contact portion 31 is used for contacting the end face of the rotating shaft 10. it can. As a preferred embodiment, the area of the contact portion 31 is formed so as to be slightly smaller than the concave hole 21 of the sealing member 2, and the support member 3 is provided with a valve which can be separated from the periphery of the contact portion 31. A plurality of pieces 32 are provided. For this reason, the plurality of valve pieces 32 of the support member 3 are formed so that they can be bent and adhere tightly to the inner peripheral wall of the concave hole 23 of the sealing member 2. The contact part 31 can be positioned and inserted into the recess 21 of the sealing member 2.

FIG. 2 is a sectional view showing an assembled state of the bearing structure of the rotating shaft of the electric motor according to the first embodiment of the present invention. A sealing member 2 is connected to the other end of the shaft tube 1, and the sealing member 2 is made of a metal material. Therefore, the sealing member 2 and the shaft tube 1 are tightly connected to each other by an interference fit method. Are combined. The support member 3 is inserted into the recess 21 of the sealing member 2, and the plurality of valve pieces 32 of the support member 3 are bent and tightly adhered to the inner peripheral wall of the recess 21. Numeral 3 is formed so as to be firmly positioned inside the shaft tube 1 by the contact of the sealing member 2 and to contact one end of the rotating shaft 10. Further, the area surrounded by the valve piece 32 of the support member 3 is formed to be slightly larger than the outer diameter of the rotating shaft 10, and the bearing 11 is fitted on the outer peripheral wall of the rotating shaft 10, so that the bearing 11 rotates. The shaft 10 can be supported for rotation. Further, since the support member 3 is made of a friction-resistant non-metallic material, the rotating shaft 10 can abut on the abutting portion 31 to achieve relatively stable rotation, and at the same time, can rotate the rotating shaft 10 during rotation. Friction noise due to only minimal rotation between the contact portion 31 is generated.

[0014]

Second Embodiment FIG. 3 is an exploded perspective view of a bearing structure of a rotating shaft of an electric motor according to a second embodiment of the present invention. The bearing structure of the rotating shaft of the electric motor according to the present embodiment is mainly constituted by members such as the shaft tube 1, the sealing member 2, and the support member 4.

At least one bearing 11 is fitted on the inner peripheral wall of the shaft tube 1, and the bearing can support rotation of the rotating shaft 10 of the rotor. Further, a hook member 12 is provided on the rotating shaft 10, and the locking member 12 can prevent the rotating shaft 10 from coming off. A sealing member 2 is coupled to the other end surface of the shaft tube 1. The sealing member 2 is manufactured from a metal material. A recess 21 is formed in the sealing member 2, and an annular wall 22 is formed around the recess 21. The support member 4 can be inserted into the concave hole 21.

The support member 4 is made of a non-metallic material having friction resistance, and the support member 4 can be inserted into the recess 21 of the sealing member 2. The support member 4 has a container shape such as a cup shape or a bowl shape, and a contact portion 41 is formed at the bottom of the support member 4. An annular wall 42 is formed around the contact portion 41. The area surrounded by the annular wall 42 is formed to be slightly larger than the outer diameter of the rotating shaft 10.

FIG. 4 is a sectional view showing an assembled state of the bearing structure of the rotating shaft of the electric motor according to the second embodiment of the present invention. At least one bearing 11 is fitted on the inner peripheral wall of the shaft tube 1, and a sealing member 2 is coupled to the other end of the shaft tube 1. Since the sealing member 2 is manufactured from a metal material, the sealing member 2 and the shaft tube 1 are tightly connected to each other by an interference fit method. The support member 4 is inserted into the recess 21 of the sealing member 2. Since the rotating shaft 10 penetrates the bearing 11 and the other end is in contact with the contact portion 41 of the support member 4, the rotating shaft 10 can rotate stably. Further, since the support member 4 can be made of a friction-resistant non-metallic material, when the rotating shaft 10 rotates, the friction noise generated by the rotation can be minimized.

[0018]

Third Embodiment FIG. 5 is a sectional view showing an assembled state of a bearing structure of a rotating shaft of an electric motor according to a third embodiment of the present invention. At least one bearing 11 is fitted on the inner peripheral wall of the shaft tube 1, and a sealing member 2 is coupled to the other end surface of the shaft tube 1. Since the sealing member 2 is manufactured from a metal material, the sealing member 2 and the shaft tube 1 are tightly connected to each other by an interference fit method. The support member 5 is inserted into the recess 21 of the sealing member 2. The support member 5 is formed in a hat-like shape such as an inverted silk hat or a mountain hat, and the support member 5 is formed with a contact portion 51 and an annular lip 52. The abutment 51 can be used to abut one end of the rotating shaft 10, and the annular lip 52 can be locked on the annular wall 22 of the sealing member 2. Since the rotating shaft 10 penetrates the bearing 11 and the other end is in contact with the contact portion 51 of the support member 5, the rotating shaft 10 can rotate stably. Further, since the support member 5 can be made of a friction-resistant nonmetallic material, the friction noise when the rotating shaft 10 rotates can be minimized.

[0019]

Fourth Embodiment FIG. 6 is a sectional view showing an assembled state of a bearing structure of a rotating shaft of an electric motor according to a fourth embodiment of the present invention. At least one bearing 11 is fitted on the inner peripheral wall of the shaft tube 1, and a sealing member 6 is coupled to the other end surface of the shaft tube 1. Since the sealing member 6 is manufactured in a plate shape from a metal material, the sealing member 6 and the shaft tube 1 are tightly connected to each other by an interference fit method. The support member 4 can be placed on the sealing member 6. The support member 4 has a container-like shape such as a cup shape or a bowl shape. A contact portion 41 is formed at the bottom of the support member 4, and an annular wall 42 is formed around the contact portion 41. The area surrounded by the annular wall 42 is formed to be slightly larger than the outer diameter of the rotating shaft 10. Since the rotating shaft 10 penetrates the bearing 11 and the other end is in contact with the contact portion 41 of the support member 4, the rotating shaft 10 can rotate stably. Further, since the support member 4 can be made of a friction-resistant non-metallic material, the friction noise when the rotating shaft 10 rotates can be minimized.

[0020]

[Effect of the invention]

 According to the present invention, since the sealing member is made of a metal material, the sealing member and the shaft tube can be tightly connected to each other by an interference fit method. And since the sealing member can support the supporting member more stably, when the supporting member rotates while being in contact with one end of the rotating shaft, the rotating shaft can acquire more stable rotation. In addition to this, there is an advantage that the friction noise when the rotating shaft rotates can be minimized.

The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a bearing structure of a rotating shaft of an electric motor according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing an assembled state of the bearing structure of the rotating shaft of the electric motor according to the first embodiment of the present invention;

FIG. 3 is an exploded perspective view showing a bearing structure of a rotating shaft of the electric motor according to Embodiment 2 of the present invention.

FIG. 4 is a sectional view showing an assembled state of a bearing structure of a rotating shaft of an electric motor according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing an assembled state of a bearing structure of a rotating shaft of a motor according to a third embodiment of the present invention;

FIG. 6 is a sectional view showing an assembled state of a bearing structure of a rotating shaft of an electric motor according to Embodiment 4 of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Shaft pipe 11 Bearing 12 Locking member 10 Rotating shaft 2 Sealing member 21 Depression hole 22 Annular wall 3 Support member 31 Contact part 32 Valve piece 4 Support member 41 Contact part 42 Annular wall 5 Support member 51 Contact part 52 Annular lip 6 Sealing member

Claims (7)

[Utility model registration claims] 1. A bearing structure for a rotating shaft of an electric motor comprising a shaft tube (1), a sealing member (2) and a support member (3), wherein a rotating shaft is provided on an inner peripheral wall of the shaft tube (1). Shaft (10)
At least one bearing (11) is provided for pivotally mounting the support member (3), said sealing member (2) being made of a metallic material and being tightly coupled to one end of a shaft tube (1); Is made of a friction-resistant non-metallic material and is provided inside one end of the shaft tube (1) and is supported by a sealing member (2). Is formed, and the periphery of the contact portion (31) is formed in an annular wall.
The bearing structure for a rotary shaft of an electric motor, wherein the contact portion (31) is in contact with one end of the rotary shaft (10). 2. The sealing member (2) is provided with a concave hole (21), an annular wall (22) is formed around the concave hole (21), and a support is provided in the concave hole (21). The bearing structure for a rotating shaft of an electric motor according to claim 1, wherein the member (3) can be inserted. 3. An annular wall around a contact portion (31) of the support member (3) is composed of a plurality of valve pieces (32), and the support member (3) accommodates the inner diameter of the shaft pipe (1). When installed, valve piece (3
3. The bearing structure for a rotating shaft of an electric motor according to claim 2, wherein 2) is bent so as to be tightly adhered to an inner peripheral wall of the concave hole (23) of the sealing member (2). 4. The rotating shaft of an electric motor according to claim 1, wherein the area surrounded by the annular wall of the support member is formed to be larger than the outer diameter of the rotating shaft. Bearing structure. 5. The bearing structure for a rotating shaft of an electric motor according to claim 1, wherein the support member (4) has a container shape such as a cup shape or a bowl shape. 6. The support member (5) is formed in a hat-like shape such as an inverted silk hat or a mountain hat, and the support member (5) has a contact portion (51) and an annular lip (52). The bearing structure for a rotating shaft of an electric motor according to claim 1, wherein the bearing structure is formed. 7. An annular lip (5) of said support member (5).
The bearing structure for a rotating shaft of an electric motor according to claim 6, wherein 2) is installed on the annular wall (22) of the sealing member (2).