WO2024178818A1 - 便于定位组装的电机马达轴承结构及散热风扇 - Google Patents

便于定位组装的电机马达轴承结构及散热风扇 Download PDF

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Publication number
WO2024178818A1
WO2024178818A1 PCT/CN2023/089790 CN2023089790W WO2024178818A1 WO 2024178818 A1 WO2024178818 A1 WO 2024178818A1 CN 2023089790 W CN2023089790 W CN 2023089790W WO 2024178818 A1 WO2024178818 A1 WO 2024178818A1
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base
assemble
bearing structure
bearing body
easy
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PCT/CN2023/089790
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English (en)
French (fr)
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林维勇
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林维勇
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Publication of WO2024178818A1 publication Critical patent/WO2024178818A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings

Definitions

  • the invention relates to the field of bearing technology, and in particular to an electric motor bearing structure and a heat dissipation fan which are easy to position and assemble.
  • Bearings are an important component in modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. At the same time, it can also be understood that the bearing is used to fix the position of the shaft, that is, to fix the shaft so that it can only rotate, while controlling its axial and radial movement.
  • the motor cannot work at all without bearings, because the shaft may move in any direction, while the motor requires the shaft to only rotate when working.
  • the existing motor bearing structure includes a base, a bearing body and a plug body.
  • the base has a receiving cavity with an opening facing upward, wherein the bearing body is placed in the receiving cavity of the base, and then the plug body is tightly inserted into the receiving cavity and abuts against the upper end surface of the bearing body.
  • this method can fix the bearing body, the plug body needs to be forced into the receiving cavity by external force in order to be tightly fitted in the receiving cavity. This not only makes the manufacturing process complicated and the assembly efficiency low, but also the plug body will be slightly tilted into the receiving cavity under the condition of uneven external force squeezing, so that the plug body and the upper end surface of the bearing body will form uneven contact, or this uneven contact phenomenon will also occur when the plug body is subjected to excessive external force. In this way, the bearing body will loosen in the receiving cavity under long-term use, affecting the service life. Therefore, it is necessary to improve the existing motor bearing structure.
  • the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide an electric motor bearing structure that is easy to position and assemble, which can effectively solve the problems of the existing motor bearing structure having complex manufacturing process, low assembly efficiency and short service life.
  • the present invention adopts the following technical solution:
  • a motor bearing structure that is easy to position and assemble.
  • a base having an accommodating cavity with an opening facing upward, and an outer peripheral edge of an upper end of the base having a first external thread section;
  • a bearing body is installed in the receiving cavity of the base, and the bearing body has an axial hole with an opening facing upward;
  • a locking end cover comprises a cover body and a brim extending downwardly along the cover body, the cover body having a through hole and a stop portion, the inner side of the brim having an internal thread section which is threadedly engaged with the first external thread section of the base so that the stop portion of the cover body abuts against the top end surface of the bearing body to limit the axial movement of the bearing body, and the through hole is directly connected to the shaft hole.
  • a second external thread section is provided on the outer periphery of the upper end of the base, and the second external thread section is located at the lower end of the first thread section.
  • a nut for locking the motor cylinder plate is screwed on the second external thread section.
  • a limiting portion is protruding from the base, and the limiting portion is located below the second external thread section, so that a limiting space for installing the motor cylinder plate is formed between the nut and the limiting portion.
  • a mounting cavity for mounting a magnet is provided on the bottom end surface of the base, and the installation of the magnet is conducive to fixing the position of the bearing body.
  • annular convex portion is provided on the top surface of the base, and a sealing ring is sleeved on the annular convex portion to effectively prevent leakage of lubricating oil.
  • a wrench position is provided on the cover body, and the wrench position is adapted to the external device mechanism, so that the bearing structure can be assembled automatically.
  • the wrench position radially penetrates the aforementioned through hole. This design is conducive to the positioning and matching of the external device mechanism and the wrench position.
  • a plurality of radially extending first exhaust grooves are provided on the top surface of the bearing body, a plurality of radially extending second exhaust grooves are provided on the bottom surface of the bearing body, and a plurality of vertically extending third exhaust grooves are provided on the circumferential side surface of the bearing body, and each third exhaust groove is connected to the corresponding first exhaust groove and second exhaust groove.
  • the design of the first exhaust groove, the second exhaust groove and the third exhaust groove can smoothly discharge the air in the accommodating cavity.
  • the number of the first exhaust grooves, the second exhaust grooves and the third exhaust grooves are five, the five first exhaust grooves are evenly arranged on the top end surface of the bearing body, the five second exhaust grooves are evenly arranged on the bottom end surface of the bearing body, and the five third exhaust grooves are evenly arranged on the circumferential side surface of the bearing body.
  • a heat dissipation fan comprises the aforementioned motor bearing structure which is convenient for positioning and assembly.
  • the stop portion of the cover body is abutted against the top end surface of the bearing body to limit the axial movement of the bearing body, and the bearing body can be conveniently and quickly assembled in the base, simplifying the process and improving the assembly efficiency.
  • the upper end surface of the bearing body will not form an uneven contact with the locking end cover after assembly. Under long-term use, the bearing body will not loosen in the accommodating cavity, thereby extending the service life of the bearing body.
  • FIG1 is a cross-sectional view of a preferred embodiment of the utility model
  • FIG2 is a schematic diagram of an assembly of a motor bearing structure for facilitating positioning and assembly in a preferred embodiment of the present invention
  • FIG3 is a perspective schematic diagram of a base in a preferred embodiment of the present utility model
  • FIG4 is a perspective schematic diagram of a bearing body in a preferred embodiment of the present utility model
  • FIG. 5 is a perspective view of an end cap with a straight-shaped wrench position in a preferred embodiment of the present invention
  • FIG6 is a three-dimensional schematic diagram of FIG5 from another angle
  • FIG. 7 is a cross-section of a motor bearing structure for facilitating positioning and assembly in a preferred embodiment of the present invention.
  • FIG. 8 is a top view of the end cover with a cross-shaped wrench position in a preferred embodiment of the present invention.
  • the electric motor bearing structure that is easy to position and assemble includes a base 10, a bearing body 20 and a locking end cover 30.
  • the base 10 has an upwardly opening accommodating cavity 101, and the outer periphery of the upper end of the base 10 has a first external thread section 11; in the present embodiment, the outer periphery of the upper end of the base 10 is provided with a second external thread section 12, and the second external thread section 12 is located at the lower end of the first external thread section 11, and a nut 50 for locking the motor cylinder plate 40 is screwed on the second external thread section 12; and a limiting portion 13 is convexly provided on the base 10, and the limiting portion 13 is located below the second external thread section 12, so that a limiting space 102 for installing the motor cylinder plate 40 is formed between the nut 50 and the limiting portion 13, when assembling the cooling fan, the bearing
  • the structure can adjust the position of the nut 50 to limit the motor cylinder plate, and the adjustable structure can adapt to motors of different models and sizes; and the thread directions of the first external thread section 11 and the second external thread section 12 are the same as the rotation direction of the motor, so that the locking end cover 30
  • the bearing body 20 is installed in the accommodating cavity of the base 10, and the bearing body 20 has an axial hole 201 with an opening facing upward; in the present embodiment, a plurality of radially extending first exhaust grooves 21 are provided on the top surface of the bearing body 20, a plurality of radially extending second exhaust grooves 22 are provided on the bottom surface of the bearing body 20, and a plurality of vertically extending third exhaust grooves 23 are provided on the peripheral side surface of the bearing body 20, each of the third exhaust grooves 23 is connected with the corresponding first exhaust groove 21 and second exhaust groove 22, and the design of the first exhaust groove 21, the second exhaust groove 22 and the third exhaust groove 23 can smoothly discharge the air in the accommodating cavity 101; and, the first exhaust groove 21, the second exhaust groove 22 and the third exhaust groove 23 are all five, the five first exhaust grooves 21 are evenly spaced on the top surface of the bearing body 20, the five second exhaust grooves 22 are evenly spaced on the bottom surface of the bearing body 20, and the five third exhaust grooves 23 are evenly spaced on the peripheral side surface of the bearing body 20
  • the locking end cover 30 has a cover body 31 and a brim 32 extending downward along the cover body 31, the cover body 31 has a through hole 311 and a stop portion 312, the inner side of the brim 32 has an internal thread section 321, the internal thread section 321 is screwed with the first external thread section 11 of the base 10, so that the stop portion 312 of the cover body 31 abuts against the top surface of the bearing body 20 to limit the axial movement of the bearing body 20, and the through hole 311 is directly connected to the shaft hole 201; in the present embodiment, a wrench position 313 is provided on the cover body 31, and the wrench position 313 is adapted to the external device mechanism so that the bearing structure can be automatically assembled; and the wrench position 313 radially penetrates the aforementioned through hole 311, this design is conducive to the positioning and matching of the external device mechanism and the wrench position 313, and the wrench position 313 can be a single shape or a cross shape, or other shapes, which are not limited here.
  • the bearing body 20 is installed in the accommodating cavity 101.
  • the air in the accommodating cavity 101 is discharged to the outside from the second exhaust groove 22 through the third exhaust groove 23 and then from the first exhaust groove 21, so that the bearing body 20 is smoothly installed.
  • the sealing ring 70 is embedded in the annular protrusion 104.
  • the external device screws the end cover 30 on the base 10 and covers the opening of the accommodating cavity 101, so that the stop portion 312 of the cover body 31 is against the top end surface of the bearing body 20 to limit the axial movement of the bearing body 20.
  • the sealing ring 70 is in close contact with the stop portion 312 to ensure the sealing of the bearing structure and prevent oil leakage from the bearing structure.
  • the design focus of the present invention is that by installing the bearing body in the accommodating cavity, and then screwing the end cover and the first external thread section to the base, the bearing body can be conveniently and quickly assembled in the base, thereby improving the assembly efficiency.
  • the bearing body will not be subjected to external forces after assembly and during use, and the bearing body will not be deformed, which can effectively extend the service life of the bearing body.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

本发明公开一种便于定位组装的电机马达轴承结构，一底座，具有一开口朝上的容置腔；一轴承主体，系安装于底座的容置腔内，该轴承主体具有一开口朝上的轴孔；一锁紧端盖，具有一盖体部及一帽缘部，该盖体部具有一贯穿通孔及一抵止部，所述贯穿通孔与轴孔正对连通。通过将轴承主体安装在容置腔中，再配合锁紧端盖与第一外螺纹段螺合安装在底座上，使盖体部的抵止部抵于轴承主体的顶端面，以限制轴承主体轴向活动，并使得轴承主体方便快捷地组装在底座中，简化制程工艺，提高组装效率，同时，轴承主体的上端面在组装后不会与锁紧端盖形成不平整接触，在长期使用情形下，轴承主体不会在容置腔内松动，从而延长轴承主体的使用寿命。

Description

便于定位组装的电机马达轴承结构及散热风扇 技术领域
本发明涉及轴承领域技术，尤其是指一种便于定位组装的电机马达轴承结构及散热风扇。
 背景技术
轴承是当代机械设备中一种重要零部件。它的主要功能是支撑机械旋转体，降低其运动过程中的摩擦系数，并保证其回转精度。同时，也可以理解为轴承是用于固定轴的位置，就是固定轴使其只能实现转动，而控制其轴向和径向的移动。电机没有轴承的话根本就不能工作，因为轴可能向任何方向运动，而电机工作时要求轴只能作转动。
现有电机用轴承结构，包括底座、轴承主体以及塞体，底座具有开口向上的容置腔，其中将轴承主体放置于底座的容置腔中，再将塞体紧配塞入容置腔中并抵于轴承主体的上端面上，这种方式虽然可以将轴承主体固定，但是，塞体为紧配于容置腔中，需要通过外力将塞体强行迫入，这样不仅制程工艺复杂，组装效率低，而且塞体会因受到的外力不均的挤压情形下，塞体会相对略微倾斜进入容置腔内，从而塞体与轴承主体上端面会形成不平整接触，或者塞体受到外力过大时也会出现这种接触不平整的现象，如此这种轴承长期使用情形下会使轴承主体在容置腔内松动，影响使用寿命。因此，有必要对现有的电机用轴承结构进行改进。
 技术解决方案
有鉴于此，本发明针对现有技术存在之缺失，其主要目的是提供一种便于定位组装的电机马达轴承结构，其能有效解决现有之电机用轴承结构制程工艺复杂，组装效率低，使用寿命短的问题。
为实现上述目的，本发明采用如下之技术方案：
一种便于定位组装的电机马达轴承结构，
一底座，具有一开口朝上的容置腔，该底座上端外周缘具有第一外螺纹段；
一轴承主体，系安装于底座的容置腔内，该轴承主体具有一开口朝上的轴孔；以及
一锁紧端盖，具有一盖体部及一沿盖体部向下延伸的帽缘部，该盖体部具有一贯穿通孔及一抵止部，该帽缘部内侧具有内螺纹段，该内螺纹段与底座的第一外螺纹段螺合，使盖体部的抵止部抵于轴承主体的顶端面，以限制轴承主体轴向活动，所述贯穿通孔与轴孔正对连通。
作为一种优选方案，所述底座上端外周缘设置有第二外螺纹段，该第二外螺纹段位于第一螺纹段的下端，于第二外螺纹段上螺合有一用于锁紧电机气缸片的螺帽。
作为一种优选方案，所述底座上凸设有一限位部，该限位部位于该第二外螺纹段下方，使螺帽与限位部之间形成有用于安装电机气缸片的限位空间，在组装散热风扇时，轴承结构可以调节螺帽的位置，将电机气缸片限位，且可调节的结构可以适配不同型号、尺寸的电机。
作为一种优选方案，所述底座的底端面上开设有用于安装磁铁的安装腔，磁铁的安装有利于轴承主体的位置固定。
作为一种优选方案，所述底座的顶端面上开设有环形凸部，该环形凸部上套设有密封圈，有效防止润滑油的泄露。
作为一种优选方案，所述盖体部上开设有扳手位，该扳手位与外部设备机构相适配，使得轴承结构可以实现自动化组装。
作为一种优选方案，所述扳手位径向贯穿前述贯穿通孔，此设计有利于外部设备机构与扳手位定位配合。
作为一种优选方案，所述轴承主体的顶端面上开设有多个径向延伸的第一排气槽，轴承主体的底面上开设有多个径向延伸的第二排气槽，轴承主体的周侧面开设有多个上下延伸的第三排气槽，每一第三排气槽均与对应的第一排气槽和第二排气槽连通，第一排气槽、第二排气槽和第三排气槽的设计可以将容置腔中的空气顺利排出。
作为一种优选方案，所述第一排气槽、第二排气槽和第三排气槽均为五个，五个第一排气槽均等间隔排布在轴承主体的顶端面上，五个第二排气槽均等间隔排布在轴承主体的底端面上，五个第三排气槽均等间隔排布在轴承主体的周侧面上。
一种散热风扇，包括有前述的便于定位组装的电机马达轴承结构。
本发明与现有技术相比具有明显的优点和有益效果，具体而言，由上述技术方案可知：
通过将轴承主体安装在容置腔中，再配合锁紧端盖与第一外螺纹段螺合安装在底座上，使盖体部的抵止部抵于轴承主体的顶端面，以限制轴承主体轴向活动，并使得轴承主体方便快捷地组装在底座中，简化制程工艺，提高组装效率，同时，轴承主体的上端面在组装后不会与锁紧端盖形成不平整接触，在长期使用情形下，轴承主体不会在容置腔内松动，从而延长轴承主体的使用寿命。
 附图说明
图1是本实用新型之较佳实施例的截面图；
图2是本实用新型之较佳实施例中便于定位组装的电机马达轴承结构的组装示意图；
图3是本实用新型之较佳实施例中底座的立体示意图；
图4是本实用新型之较佳实施例中轴承主体的立体示意图；
图5是本实用新型之较佳实施例中扳手位为一字型的端盖的立体示意图；
图6是图5另一角度的立体示意图；
图7是本实用新型之较佳实施例中便于定位组装的电机马达轴承结构的截面；
图8是本实用新型之较佳实施例中扳手位为十字型的端盖的俯视图。
附图标识说明：
10、底座                      101、容置腔
102、限位空间                 103、安装腔
104、环形凸部                 11、第一螺纹段
12、第二螺纹段                13、限位部
20、轴承主体                  201、轴孔
21、第一排气槽                22、第二排气槽
23、第三排气槽                24、导向斜面
30、锁紧端盖                  31、盖体部
311、贯穿通孔                 312、抵止部
313、扳手位                   32、帽缘部
321、内螺纹段                 40、螺帽
50、电机气缸片                60、磁铁
70、密封圈。
 本发明的最佳实施方式
请参照图1至图7所示，其显示出了本发明之较佳实施例的具体结构，包括有便于定位组装的电机马达轴承结构，具体而言，该便于定位组装的电机马达轴承结构包括有底座10、轴承主体20以及锁紧端盖30。
该底座10，具有一开口朝上的容置腔101，该底座10上端外周缘具有第一外螺纹段11；在本实施例中，该底座10上端外周缘设置有第二外螺纹段12，该第二外螺纹段12位于第一外螺纹段11的下端，于第二外螺纹段12上螺合有一用于锁紧电机气缸片40的螺帽50；且该底座10上凸设有一限位部13，该限位部13位于该第二外螺纹段12下方，使螺帽50与限位部13之间形成有用于安装电机气缸片40的限位空间102，在组装散热风扇时，轴承结构可以调节螺帽50的位置，将电机气缸片限位，且可调节的结构可以适配不同型号、尺寸的电机；并且，第一外螺纹段11和第二外螺纹段12的螺纹方向均与电机的旋转方向相同，使锁紧端盖30不会因轴承结构的旋转而松脱；另外，该底座10的底端面上开设有用于安装磁铁60的安装腔103，磁铁60的安装有利于轴承主体20的位置固定；以及，该底座10的顶端面上开设有环形凸部104，该环形凸部104上套设有密封圈70，有效防止润滑油的泄露。
该轴承主体20，系安装于底座10的容置腔内，该轴承主体20具有一开口朝上的轴孔201；在本实施例中，该轴承主体20的顶端面上开设有多个径向延伸的第一排气槽21，轴承主体20的底面上开设有多个径向延伸的第二排气槽22，轴承主体20的周侧面开设有多个上下延伸的第三排气槽23，每一第三排气槽23均与对应的第一排气槽21和第二排气槽22连通，第一排气槽21、第二排气槽22和第三排气槽23的设计可以将容置腔101中的空气顺利排出；以及，该第一排气槽21、第二排气槽22和第三排气槽23均为五个，五个第一排气槽21均等间隔排布在轴承主体20的顶端面上，五个第二排气槽22均等间隔排布在轴承主体20的底端面上，五个第三排气槽23均等间隔排布在轴承主体20的周侧面上。
该锁紧端盖30，具有一盖体部31及一沿盖体部31向下延伸的帽缘部32，该盖体部31具有一贯穿通孔311及一抵止部312，该帽缘部32内侧具有内螺纹段321，该内螺纹段321与底座10的第一外螺纹段11螺合，使盖体部31的抵止部312抵于轴承主体20的顶端面，以限制轴承主体20轴向活动，所述贯穿通孔311与轴孔201正对连通；在本实施例中，该盖体部31上开设有扳手位313，该扳手位313与外部设备机构相适配，使得轴承结构可以实现自动化组装；且该扳手位313径向贯穿前述贯穿通孔311，此设计有利于外部设备机构与扳手位313定位配合，且扳手位313可为一形亦可为十字形，也可为其他形状，在此不以为限。
详述本实施例的组装过程如下：
首先，将轴承主体20安装在容置腔101中，容置腔101中的空气从第二排气槽22经第三排气槽23，再从第一排气槽21排出至外界，实现轴承主体20的顺利安装，接着，将密封圈70嵌设于环形凸部104中，然后，外部设备将端盖30螺合安装在底座10上并盖住容置腔101的开口，使盖体部31的抵止部312抵于轴承主体20的顶端面，以限制轴承主体20轴向活动，同时，密封圈70与抵止部312紧密抵触，确保轴承结构的密封性，防止轴承结构发生漏油。
本发明的设计重点在于：通过将轴承主体安装在容置腔中，再配合端盖与第一外螺纹段螺合安装在底座上，使得轴承主体方便快捷地组装在底座中，提高组装效率，并且，轴承主体在组装后及使用过程中不会受到外界的力，轴承主体不会发生变形，可以有效延长轴承主体的使用寿命。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

  1. 一种便于定位组装的电机马达轴承结构，其特征在于：
    一底座，具有一开口朝上的容置腔，该底座上端外周缘具有第一外螺纹段；
    一轴承主体，系安装于底座的容置腔内，该轴承主体具有一开口朝上的轴孔；以及
    一锁紧端盖，具有一盖体部及一沿盖体部向下延伸的帽缘部，该盖体部具有一贯穿通孔及一抵止部，该帽缘部内侧具有内螺纹段，该内螺纹段与底座的第一外螺纹段螺合，使盖体部的抵止部抵于轴承主体的顶端面，以限制轴承主体轴向活动，所述贯穿通孔与轴孔正对连通。
  2. 根据权利要求1所述的便于定位组装的电机马达轴承结构，其特征在于：所述底座上端外周缘设置有第二外螺纹段，该第二外螺纹段位于第一螺纹段的下端，于第二外螺纹段上螺合有一用于锁紧电机气缸片的螺帽。
  3. 根据权利要求2所述的便于定位组装的电机马达轴承结构，其特征在于：所述底座上凸设有一限位部，该限位部位于该第二外螺纹段下方，使螺帽与限位部之间形成有用于安装电机气缸片的限位空间。
  4. 根据权利要求1所述的便于定位组装的电机马达轴承结构，其特征在于：所述底座的底端面上开设有用于安装磁铁的安装腔。
  5. 根据权利要求1所述的便于定位组装的电机马达轴承结构，其特征在于：所述底座的顶端面上开设有环形凸部，该环形凸部上套设有密封圈。
  6. 根据权利要求1所述的便于定位组装的电机马达轴承结构，其特征在于：所述盖体部上开设有扳手位。
  7. 根据权利要求6所述的便于定位组装的电机马达轴承结构，其特征在于：所述扳手位径向贯穿前述贯穿通孔。
  8. 根据权利要求1所述的便于定位组装的电机马达轴承结构，其特征在于：所述轴承主体的顶端面上开设有多个径向延伸的第一排气槽，轴承主体的底面上开设有多个径向延伸的第二排气槽，轴承主体的周侧面开设有多个上下延伸的第三排气槽，每一第三排气槽均与对应的第一排气槽和第二排气槽连通。
  9. 根据权利要求8所述的便于定位组装的电机马达轴承结构，其特征在于：所述第一排气槽、第二排气槽和第三排气槽均为五个，五个第一排气槽均等间隔排布在轴承主体的顶端面上，五个第二排气槽均等间隔排布在轴承主体的底端面上，五个第三排气槽均等间隔排布在轴承主体的周侧面上。
  10. 一种散热风扇，其特征在于：包括有权利要求1-9任一项所述的便于定位组装的电机马达轴承结构。
PCT/CN2023/089790 2023-02-27 2023-04-21 便于定位组装的电机马达轴承结构及散热风扇 WO2024178818A1 (zh)

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* Cited by examiner, † Cited by third party
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US4261251A (en) * 1979-10-04 1981-04-14 Hughes Tool Company Kelly head for hydraulic mast digger
JP2007236147A (ja) * 2006-03-02 2007-09-13 Funai Electric Co Ltd スピンドルモータ。
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JP2012222939A (ja) * 2011-04-07 2012-11-12 Tokyo Parts Ind Co Ltd スピンドルモータ
CN109667839A (zh) * 2017-10-13 2019-04-23 建准电机工业股份有限公司 轴承组及具轴承组的马达
CN111937277A (zh) * 2018-03-29 2020-11-13 日本电产株式会社 马达

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261251A (en) * 1979-10-04 1981-04-14 Hughes Tool Company Kelly head for hydraulic mast digger
JP2007236147A (ja) * 2006-03-02 2007-09-13 Funai Electric Co Ltd スピンドルモータ。
CN101325356A (zh) * 2007-06-14 2008-12-17 东京零件工业股份有限公司 无电刷马达
JP2012222939A (ja) * 2011-04-07 2012-11-12 Tokyo Parts Ind Co Ltd スピンドルモータ
CN109667839A (zh) * 2017-10-13 2019-04-23 建准电机工业股份有限公司 轴承组及具轴承组的马达
CN111937277A (zh) * 2018-03-29 2020-11-13 日本电产株式会社 马达

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