TWM559547U - Reflux device for oil removal of cooling liquid in motor - Google Patents
Reflux device for oil removal of cooling liquid in motor Download PDFInfo
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Abstract
本創作係揭露一種馬達冷卻液甩油迴流裝置，其中該馬達具有一外殼體、一定子、一轉子、一前(後)端蓋、及一油盆。該冷卻液甩油迴流裝置係同心設於前(後)端蓋，包括有一容槽、一迴流道、一迷宮軸蓋、及一甩油軸套；該容槽係凹陷形成於前端蓋外端面。該迴流道係貫穿前端蓋形成，連通容槽與外殼體內側。該迷宮軸蓋係鎖設於容槽具有一穿孔及一內環槽。該甩油軸套係套設於轉軸外周側並與之同動，具有一套接部、一翼部、及一軸套孔。藉由上述構件之組成，讓拋油軸提供拋甩效益，再配合翼部與內環槽，共同界定出多段曲折之迷宮通道，俾以達成止洩防漏，大幅提升主動回油之能力。 The present invention discloses a motor coolant slick return device, wherein the motor has an outer casing, a stator, a rotor, a front (rear) end cap, and an oil basin. The coolant eel returning device is concentrically disposed on the front (rear) end cover, and includes a cavity, a return channel, a labyrinth shaft cover, and an oil bushing; the cavity is formed on the outer end surface of the front end cover . The return passage is formed through the front end cover and communicates with the inside of the housing and the outer casing. The labyrinth shaft cover is locked in the pocket with a perforation and an inner ring groove. The oil sling sleeve is sleeved on the outer peripheral side of the rotating shaft and is coupled with the same, and has a set of joints, a wing portion and a sleeve hole. Through the composition of the above components, the oil slinger can provide the throwing benefit, and then cooperate with the wing and the inner ring groove to jointly define a plurality of zigzag labyrinth passages, so as to achieve a leak-proof and leak-proof, and greatly enhance the ability of active oil return.
Description
本創作係有關於一種馬達相關之技術領域，尤其是指用一種馬達冷卻液甩油迴流裝置。 This creation relates to a motor-related technical field, and in particular to the use of a motor coolant slick return device.
請參閱第7、8圖所示，習知馬達結構具有一外殼體91、一定子92、一轉子93、一前端蓋94、一後端蓋95、及一油盆96。 Referring to Figures 7 and 8, the conventional motor structure has an outer casing 91, a stator 92, a rotor 93, a front end cover 94, a rear end cover 95, and an oil basin 96.
前述外殼體91係為一中空管狀體，頂、底兩端分別有一注油孔912及一洩油孔914，以連通外殼體91內部及外部。 The outer casing 91 is a hollow tubular body, and the top and bottom ends respectively have an oil hole 912 and an oil drain hole 914 for connecting the inside and the outside of the outer casing 91.
前述定子92與轉子93係同心套銜並容置於外殼體91內。 The stator 92 and the rotor 93 are concentrically nested and housed in the outer casing 91.
前述前、後端蓋94、95係對應外殼體91前、後端截面封設，分別具有一同心貫穿之前、後端蓋軸孔942、952，分別提供轉子93之轉軸932穿伸。 The front and rear end covers 94 and 95 are correspondingly arranged in front and rear end portions of the outer casing 91, and have a concentric inner and rear end cover shaft holes 942 and 952 respectively, respectively, and the rotation shaft 932 of the rotor 93 is respectively provided.
前述油盆96係設於外殼體91之底端，並與洩油孔914位置對應。 The oil basin 96 is disposed at the bottom end of the outer casing 91 and corresponds to the position of the drain hole 914.
如上所述之結構，透過注油孔911引入冷卻液(潤滑油)至外殼體91內部進行熱交換後，其冷卻液(潤滑油)經由洩油孔914離開外殼體91至油盆96蓄存，可選擇性的配合過濾(冷 卻)設備將油盆96中之冷卻液(潤滑油)進行冷卻(過濾)，待後續循環回流到注油孔912，藉此對馬達內之構件進行冷卻(潤滑)。 According to the configuration described above, after the coolant (lubricating oil) is introduced into the outer casing 91 through the oil hole 911 for heat exchange, the coolant (lubricating oil) is discharged from the outer casing 91 to the oil pan 96 via the drain hole 914. Optional filter (cold However, the device cools (filters) the coolant (lubricating oil) in the oil pan 96 and waits for subsequent circulation to return to the oil filling hole 912, thereby cooling (lubricating) the components in the motor.
為了避免冷卻液(潤滑油)經由前(後)端蓋94(95)之前(後)端蓋軸孔942(952)外漏，故前(後)端蓋軸孔942(952)都必需配合一油封環97設置。該油封環97具有一貫孔972，套銜於轉軸932外周側，並固設於前(後)端蓋94、95，藉以達成防漏之效益，然其結構存有以下缺失；習知之油封環97多為(或包含)塑膠材質，周知塑膠材質其耐油不佳，容易硬化失去物理變形之彈性。 In order to prevent the coolant (lubricating oil) from leaking through the front (rear) end cap shaft hole 942 (952) of the front (rear) end cap 94 (95), the front (rear) end cap shaft hole 942 (952) must be matched. An oil seal ring 97 is provided. The oil seal ring 97 has a constant hole 972, is sleeved on the outer peripheral side of the rotating shaft 932, and is fixed to the front (rear) end covers 94, 95, thereby achieving the leakage prevention effect, and the structure has the following defects; the conventional oil seal ring More than 97 (or include) plastic materials, known as plastic materials, its oil resistance is not good, easy to harden the elasticity of physical deformation.
習知之油封環97與轉軸932形成輕微的接觸，故此一接觸面，必然因與高速旋轉之轉軸932接觸而磨損，導致轉軸931穿伸之貫孔972孔徑擴大，而失去密封的效果。 The conventional oil seal ring 97 forms a slight contact with the rotating shaft 932. Therefore, the contact surface is inevitably worn due to contact with the rotating shaft 932 rotating at a high speed, so that the hole 972 through which the rotating shaft 931 penetrates has an enlarged aperture and loses the sealing effect.
承上所述，習知油封環97係與轉軸932形成接觸，一旦有灰塵或其它硬質廢屑卡阻於油封環97與轉軸932之間時，反容易對轉軸932表面形成定點之磨損。 As described above, the conventional oil seal ring 97 is in contact with the rotating shaft 932. When dust or other hard waste is caught between the oil seal ring 97 and the rotating shaft 932, it is easy to form a fixed point on the surface of the rotating shaft 932.
有鑑於上述習知技藝之問題與缺失，本創作之主要目的，乃在於提供一種馬達冷卻液甩油迴流裝置，透過結構金屬材質之設計，使其兼具甩油及迷宮防漏之效益，以克服上述習知技藝之缺失。 In view of the above problems and shortcomings of the prior art, the main purpose of the present invention is to provide a motor coolant slick backflow device, which is designed to have the benefits of simmering oil and labyrinth leakage through the design of the structural metal material. Overcome the lack of the above-mentioned prior art.
根據本創作上述目的，提出一種馬達冷卻液甩油迴流裝置，其中該馬達具有一外殼體、一定子、一轉子、一前(後)端蓋、及一油盆。該冷卻液甩油迴流裝置係同心設於前(後)端蓋，包括有一容槽、一迴流道、一迷宮軸蓋、及一甩油軸套；該容槽係凹陷形成於前端蓋外端面。該迴流道係貫穿前端蓋形 成，連通容槽與外殼體內側。該迷宮軸蓋係鎖設於容槽具有一穿孔及一內環槽。該甩油軸套係套設於轉軸外周側並與之同動，具有一套接部、一翼部、及一軸套孔。藉由上述構件之組成，讓甩油軸套提供拋甩效益，再配合翼部與內環槽，共同界定出多段曲折之迷宮通道，俾以達成止洩防漏，大幅提升主動回油之能力。 In accordance with the above objects of the present invention, a motor coolant slick return device is provided, wherein the motor has an outer casing, a stator, a rotor, a front (rear) end cap, and an oil basin. The coolant eel returning device is concentrically disposed on the front (rear) end cover, and includes a cavity, a return channel, a labyrinth shaft cover, and an oil bushing; the cavity is formed on the outer end surface of the front end cover . The return channel runs through the front end cover Into the connecting pocket and the inside of the outer casing. The labyrinth shaft cover is locked in the pocket with a perforation and an inner ring groove. The oil sling sleeve is sleeved on the outer peripheral side of the rotating shaft and is coupled with the same, and has a set of joints, a wing portion and a sleeve hole. Through the composition of the above-mentioned components, the slinger bushing provides the throwing benefit, and then cooperates with the wing and the inner ring groove to jointly define a plurality of zigzag labyrinth passages, so as to achieve a leak-proof and leak-proof, and greatly enhance the ability of actively returning oil. .
100‧‧‧馬達 100‧‧‧Motor
11‧‧‧外殼體 11‧‧‧Outer casing
112‧‧‧注油孔 112‧‧‧ oil hole
114‧‧‧洩油孔 114‧‧‧ drain hole
12‧‧‧定子 12‧‧‧ Stator
13‧‧‧轉子 13‧‧‧Rotor
132‧‧‧轉軸 132‧‧‧ shaft
14‧‧‧前端蓋 14‧‧‧ front end cover
142‧‧‧前端蓋軸孔 142‧‧‧ front end cover shaft hole
15‧‧‧後端蓋 15‧‧‧Back end cover
152‧‧‧後端蓋軸孔 152‧‧‧ Rear end cover shaft hole
16‧‧‧油盆 16‧‧‧ oil basin
2‧‧‧容槽 2‧‧‧ 容容
3‧‧‧迴流道 3‧‧‧ Return Road
4‧‧‧迷宮軸蓋 4‧‧‧ labyrinth shaft cover
42‧‧‧穿孔 42‧‧‧Perforation
44‧‧‧內環槽 44‧‧‧ Inner ring groove
46‧‧‧外環槽 46‧‧‧ outer ring groove
442‧‧‧銳角部 442‧‧‧Angle
444‧‧‧大徑段之階級 444‧‧‧Class of the Great Path
446‧‧‧小徑段之階級 446‧‧‧Class of the trail section
4462‧‧‧鈍角部 4462‧‧‧oblate corner
5‧‧‧甩油軸套 5‧‧‧甩 oil bushing
52‧‧‧套接部 52‧‧‧ Sockets
54‧‧‧翼部 54‧‧‧ wing
542‧‧‧延伸段 542‧‧‧Extension
544‧‧‧垂直段 544‧‧‧ vertical section
56‧‧‧軸套孔 56‧‧‧ shaft hole
A‧‧‧迷宮通道 A‧‧‧ labyrinth channel
<習知> <知知>
91‧‧‧外殼體 91‧‧‧Outer casing
912‧‧‧注油孔 912‧‧‧ oil hole
914‧‧‧洩油孔 914‧‧‧ drain hole
92‧‧‧定子 92‧‧‧ Stator
93‧‧‧轉子 93‧‧‧Rotor
932‧‧‧轉軸 932‧‧‧ shaft
94‧‧‧前端蓋 94‧‧‧ front end cover
942‧‧‧前端蓋軸孔 942‧‧‧ front end cover shaft hole
95‧‧‧後端蓋 95‧‧‧Back end cover
952‧‧‧後端蓋軸孔 952‧‧‧ Rear end cover shaft hole
96‧‧‧油盆 96‧‧‧ oil basin
第1圖 係本創作實施例立體示意圖。 Figure 1 is a perspective view of an embodiment of the present invention.
第2圖 係第1圖所示實施例局部剖面示意圖。 Fig. 2 is a partial cross-sectional view showing the embodiment shown in Fig. 1.
第3圖 係第2圖所示實施例局部示意圖。 Figure 3 is a partial schematic view of the embodiment shown in Figure 2.
第4圖 係第3圖所示實施例局部示意圖。 Figure 4 is a partial schematic view of the embodiment shown in Figure 3.
第5圖 係本創作迷宮軸蓋構件示意圖。 Figure 5 is a schematic diagram of the labyrinth cover member of the present invention.
第6圖 係本創作甩油軸套構件示意圖。 Figure 6 is a schematic diagram of the sling oil bushing member.
第7圖 係習知馬達剖面示意圖。 Figure 7 is a schematic cross-sectional view of a conventional motor.
第8圖 係第7圖所示實施例局部剖面示意圖。 Figure 8 is a partial cross-sectional view of the embodiment shown in Figure 7.
以下請參照相關圖式進一步說明本創作馬達冷卻液甩油迴流裝置實施例，為便於理解本創作實施方式，以下相同元件係採相同符號標示說明。 Hereinafter, the embodiment of the present motor coolant hydrazine reflow device will be further described with reference to the related drawings. For the purpose of understanding the present embodiment, the same components are denoted by the same reference numerals.
本創作以下所提到的方向性用語，例如「前」、「後」、「上(頂)」、「下(底)」、「內」、「外」、「側面」等，主要係參考附加圖式的方向，各方向性用語僅用以輔助說明及理解本創作的各實施例，非用以限制本創作。 The following directional terms, such as "before", "after", "upper (top)", "lower", "inside", "outside", "side", etc., are mainly used for reference. The directional terms are used to assist in the description and understanding of the various embodiments of the present invention and are not intended to limit the present invention.
請參閱第1至6圖所示，本創作之馬達冷卻液甩油迴流裝置，其中該馬達100具有一外殼體11、一定子12、一轉子13、一前端蓋14、一後端蓋15、及一油盆16。前述外殼體11為一中空管狀體，其頂、底兩端分別有一注油孔112及一洩油孔114，分別連通外殼體11內部及外部。前述定子12與轉子13係同心套銜容置於外殼體11內。前述前、後端蓋14、15係對應外殼體11前、後端截面封設，分別具有一同心貫穿之前、後端蓋軸孔142、152，分別提供轉子13之轉軸132穿伸。前述油盆16係設於外殼體11之底端，並與洩油孔114位置對應。 Referring to Figures 1 to 6, the motor coolant slick return device of the present invention, wherein the motor 100 has an outer casing 11, a stator 12, a rotor 13, a front end cover 14, and a rear end cover 15, And an oil basin 16. The outer casing 11 is a hollow tubular body. The top and bottom ends of the outer casing 11 respectively have an oil filling hole 112 and an oil drain hole 114 respectively communicating with the inside and the outside of the outer casing 11. The stator 12 and the rotor 13 are concentrically placed in the outer casing 11. The front and rear end covers 14, 15 are corresponding to the front and rear end sections of the outer casing 11, and have a concentric inner and rear end cover shaft holes 142 and 152 respectively, respectively, and provide the rotation shaft 132 of the rotor 13 to extend. The oil basin 16 is disposed at the bottom end of the outer casing 11 and corresponds to the position of the oil drain hole 114.
有關冷卻液甩油迴流裝置，係同心設於前、後端蓋14、15，包括有一容槽2、一迴流道3、一迷宮軸蓋4、及一甩油軸套5。 The coolant slick returning device is concentrically disposed on the front and rear end covers 14, 15 and includes a receiving groove 2, a return flow path 3, a labyrinth shaft cover 4, and an oil sling bushing 5.
上述容槽2，請參閱第3、4圖所示，係凹陷形成於前(後)端蓋14(15)外端面，即相反於前(後)端蓋14(15)抵接外殼體11之端面。 For the above-mentioned container 2, as shown in FIGS. 3 and 4, the recess is formed on the outer end surface of the front (rear) end cover 14 (15), that is, opposite to the front (rear) end cover 14 (15) abutting the outer casing 11 The end face.
上述迴流道3，請參閱第2至4圖所示，係貫穿前(後)端蓋14(15)形成，以連通容槽2與前(後)端蓋14(15)內端面(外殼體11內)，且趨近洩油孔114端。實施時，迴流道3自容槽端2朝洩油孔114方向呈一斜度。 The return passage 3, as shown in Figures 2 to 4, is formed through the front (rear) end cover 14 (15) to communicate the inner end surface of the receptacle 2 and the front (rear) end cover 14 (15) (outer housing) 11) and approaching the end of the drain hole 114. In implementation, the return passage 3 has a slope from the tank end 2 toward the drain hole 114.
上述迷宮軸蓋4，請參閱第2至5圖所示，係鎖設於容槽2具有一穿孔42、一內環槽44、及一外環槽46。前述穿孔42係同心前、後端蓋軸孔142、152貫穿迷宮軸蓋4形成，孔徑略大於轉軸132直徑。前述內環槽44係同心穿孔42凹陷形成於迷宮軸蓋4內端面(與外殼體11抵接之端面)；其中，內環槽44內徑側之徑向端面凹陷有一銳角部442，又內環槽44 外徑側之徑向端面形成有大、小徑段之階級444、446，並於小徑段之階級444中，外徑側之徑向端面形成有一鈍角部4462。前述外環槽46係凹陷形成於迷宮軸蓋4外周面，提供一墊圈容設。 The labyrinth shaft cover 4, as shown in FIGS. 2 to 5, is locked in the housing 2 and has a through hole 42, an inner ring groove 44, and an outer ring groove 46. The perforations 42 are concentric and front end cover shaft holes 142, 152 formed through the labyrinth shaft cover 4, and the aperture is slightly larger than the diameter of the rotating shaft 132. The inner ring groove 44 is formed by a concentric hole 42 recessed in the inner end surface of the labyrinth shaft cover 4 (the end surface abutting the outer casing 11); wherein the radial end surface of the inner ring side of the inner ring groove 44 is recessed with an acute angle portion 442, and Ring groove 44 The radial end faces on the outer diameter side are formed with the classes 444, 446 of the large and small diameter segments, and in the class 444 of the small diameter segments, the radial end faces on the outer diameter side are formed with an obtuse angle portion 4462. The outer ring groove 46 is recessed on the outer circumferential surface of the labyrinth shaft cover 4 to provide a gasket.
上述甩油軸套5，請參閱第2至4、6圖所示，係套設於轉軸132外周側並與之同動，具有一套接部52、一翼部54、及一軸套孔56。前述套接部52與翼部54係分別形成於甩油軸套5兩端；其中，翼部54具有延伸段542及垂直段544，該延伸段542係自套接部52徑向朝外延伸，並相對套接部52呈一斜度，該翼部54係自延伸段542朝外延伸，並相對迷宮軸蓋4呈平行，且穿伸懸設於迷宮軸蓋4之內環槽24中。前述軸套孔56係軸向貫穿套接部52形成提供轉軸132穿伸。 The slinger bushing 5, as shown in FIGS. 2 to 4 and 6, is sleeved on the outer peripheral side of the rotating shaft 132 and has a set of a joint portion 52, a wing portion 54, and a sleeve hole 56. The sleeve portion 52 and the wing portion 54 are respectively formed at two ends of the oil sling sleeve 5; wherein the wing portion 54 has an extension portion 542 and a vertical portion 544 extending radially outward from the socket portion 52. And extending relative to the sleeve portion 52. The wing portion 54 extends outwardly from the extension portion 542 and is parallel to the labyrinth shaft cover 4 and extends through the inner ring groove 24 of the labyrinth shaft cover 4. . The sleeve hole 56 is axially formed through the sleeve portion 52 to provide the rotation of the rotating shaft 132.
是以，上述即為本創作所提供一較佳實施例馬達冷卻液甩油迴流裝置各部構件及組裝方式之介紹，茲再將本創作之實施例作動特點介紹如下。 Therefore, the above description is a description of the components and assembly methods of the motor coolant hydrazine reflow device according to a preferred embodiment of the present invention. The actuation characteristics of the embodiment of the present invention are described below.
請參閱第1至6圖所示，冷卻液(潤滑油)自注油孔112以油氣形態注入外殼體11內，對外殼體11內之構件進行熱交換(潤滑)，各軸承6軸向內端面(遠離甩油軸套5)之冷卻液(潤滑油)會因自重朝洩油孔114方向運動。 Referring to FIGS. 1 to 6, the coolant (lubricating oil) is injected into the outer casing 11 in the form of oil and gas from the oil filling hole 112, and heat exchange (lubrication) is performed on the members in the outer casing 11, and the axial inner end faces of the respective bearings 6 are provided. The coolant (lubricating oil) (away from the sling bushing 5) will move toward the drain hole 114 due to its own weight.
另各軸承6軸向外端面(抵接甩油軸套5)之冷卻液(潤滑油)溢出至甩油軸套5時，由於甩油軸套5與轉軸132同動故對冷卻液(潤滑油)形成拋甩的作用，使流至甩油軸套5之冷卻液(潤滑油)被拋甩到前(後)端蓋14(15)之前(後)端蓋軸孔142(152)孔壁及迷宮軸蓋4之內環槽44槽壁，大幅提升主動回油能力並可防止洩漏。 When the coolant (lubricating oil) of the axially outer end surface of each bearing 6 (abutting the oil sling bushing 5) overflows to the oil sling bushing 5, since the slinger bushing 5 and the rotating shaft 132 move together, the coolant (lubrication) The oil) forms a throwing action, so that the coolant (lubricating oil) flowing to the oil sling sleeve 5 is thrown to the front (rear) end cover 14 (15) before (rear) the end cap shaft hole 142 (152) hole The inner wall of the ring groove 44 in the wall and labyrinth shaft cover 4 greatly enhances the active oil returning ability and prevents leakage.
被拋甩到迷宮軸蓋4內環槽44之冷卻液(潤滑 油)，會因自重(聚合)而沿內環槽44流到迴流道3，並經迴流道3朝洩油孔114方向運動。另外甩油軸套5之翼部54(延伸段542及垂直段544)容置於迷宮軸蓋4內環槽44小徑段之階級446處，利用甩油軸套5旋轉時造成周邊流體壓力的變化，即可形成隱形的防護，再配合翼部54與迷宮軸蓋4內環槽44對應之端面大、小徑段之階級444、446，共同界定出一道多段曲折之迷宮通道A，俾以達成止洩漏之效益。 Coolant that is thrown into the inner ring groove 44 of the labyrinth shaft cover 4 (lubricated The oil) flows to the return passage 3 along the inner ring groove 44 due to its own weight (polymerization), and moves toward the drain hole 114 through the return passage 3. In addition, the wing portion 54 (the extension portion 542 and the vertical portion 544) of the oil sling sleeve 5 is received in the step 446 of the small diameter section of the annular groove 44 in the labyrinth shaft cover 4, and the peripheral fluid pressure is caused by the rotation of the oil sling sleeve 5. The change can form an invisible protection, and the wing portion 54 and the end face large and small diameter segments 444 and 446 corresponding to the inner ring groove 44 of the labyrinth shaft cover 4 jointly define a plurality of labyrinth passages A, 俾In order to achieve the benefits of leakage.
故緃使冷卻液(潤滑油)由上方(趨近注油孔112方向)進入曲折之迷宮通道A時，仍會積存於內環槽44之銳角部442中，並沿銳角部442自動經內環槽44外徑側之大、小徑段之階級444、446，而朝洩油孔114方向運動。 Therefore, when the coolant (lubricating oil) enters the meandering labyrinth passage A from above (in the direction of the oil filling hole 112), it still accumulates in the acute corner portion 442 of the inner ring groove 44, and automatically passes through the inner ring along the acute corner portion 442. The large and small-diameter sections 444 and 446 of the outer diameter side of the groove 44 move toward the drain hole 114.
以上所述說明，僅為本創作的較佳實施方式而已，意在明確本創作的特徵，並非用以限定本創作實施例的範圍，本技術領域內的一般技術人員根據本創作所作的均等變化，以及本領域內技術人員熟知的改變，仍應屬本創作涵蓋的範圍。 The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the present embodiment, and the average variation made by those skilled in the art according to the present creation. Changes that are well known to those skilled in the art, and still fall within the scope of this creation.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107201316U TWM559547U (en) | 2018-01-26 | 2018-01-26 | Reflux device for oil removal of cooling liquid in motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107201316U TWM559547U (en) | 2018-01-26 | 2018-01-26 | Reflux device for oil removal of cooling liquid in motor |
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| Publication Number | Publication Date |
|---|---|
| TWM559547U true TWM559547U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107201316U TWM559547U (en) | 2018-01-26 | 2018-01-26 | Reflux device for oil removal of cooling liquid in motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI674739B (en) * | 2018-01-26 | 2019-10-11 | 晟昌機電股份有限公司 | Motor coolant slick return device |
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2018
- 2018-01-26 TW TW107201316U patent/TWM559547U/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI674739B (en) * | 2018-01-26 | 2019-10-11 | 晟昌機電股份有限公司 | Motor coolant slick return device |
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