1376470 、發明說明： 【發明所屬之技術領域】 本發明係為一種線性傳動元件之冷卻結構，尤指 一種滾珠螺桿之螺帽的冷卻流道結構。 【先前技術】 請參閱圖一至三所示，係為一種具冷卻流道之螺 帽1，該螺帽1係設有複數個軸方向設置且貫穿該螺 帽1兩端並且環狀陣列之冷卻流道1 2，且該冷卻流 道1 2之兩端各設有連接各冷卻流道1 2之迴流槽1 1，該冷卻流道1 2與迴流槽1 1係形成多個S型連 續的循環流道，該循環流道兩端係為冷卻液的出入口 R，該冷卻液的出入口R用以連接外部冷卻機，另於 該螺帽1兩端各依序蓋設有一防漏墊片2及一端蓋 3，該防漏墊片2及該端蓋3係藉由複數個固定件G 穿設後，該固定件G再與該螺帽1鎖固，使該端蓋3 對於該防漏墊片2施加一壓力，而使該防漏墊片2能 密封該迴流槽1 1，使該迴流槽1 1形成一密封的迴 流道，但此冷卻流道之結構經實用後仍有以下問題須 改善： 因為該防漏墊片所受的壓力來自於該端蓋，故該 壓力無法因冷卻液的流速進行調整，當冷卻液流速增 加時，相對對於防漏墊片也會施於一壓力，而當該防 3 1376470 漏墊片長期處於該壓力下，就會造成該防漏墊片疲勞 變形，當該冷卻液通過此處時就會造成冷卻液外洩的 問題產生；另外也可能因該壓力而造成該防漏墊片直 接破損而造成冷卻液外泡。 【發明内容】 基於上述習知技術之問題點，本發明人經過研究 改良後，終有確能達成以下發明之目的之發明誕生。 即，本發明首要目的在於，研發一種可依冷卻液 的流速而調整冷卻液之循環路徑的密封力大小的密封 結構。 為達上述之目的，本發明係為一種具冷卻流道之 螺帽，該螺帽係設有複數個轴方向設置且貫穿該螺帽 兩端並且環狀陣列之冷卻流道，且該冷卻流道之兩端 各設有連接兩該冷卻涑道之容槽，該容槽具有一承靠 面及一内周面，該冷卻流道係貫穿該承靠面，該容槽 係設有一密封件，該密封件具有上端面、下端面及外 環面，該上端面係設有一迴流道，且該上端面係承靠 於該承靠面，而該迴流道係連接兩該冷卻流道，各該 冷卻流道與迴流道係形成多個S型連續的循環流道， 該循環流道兩端係為冷卻液出入口，該外環面係與該 内周面具有一夾角，該夾角係由上端面向下端面逐漸 擴張；該螺帽兩端面依序蓋設有一防漏墊片及一端 4 1376470 蓋，該端蓋係施於該防漏墊片一壓力，使該防漏墊片 密封該容槽且提供該下端面承靠。 其中，更設有複數個固定件，該固定件係穿設於 該端蓋及防漏墊片後與該螺帽鎖固，使該端蓋能施以 一壓力於該防漏墊片。 其中，該防漏墊片係設有兩穿孔，該端蓋係設有 相對該穿孔之通孔，該穿孔與通孔係銜接該冷卻液出 入口0 其中，兩該通孔係銜接外部冷卻機。 為了更進一部瞭解本發明之特徵及技術内容， 請參閱以下有關本發明之實施方式說明及圖式，然而 此實施方式及圖式僅供說明及參考用，而非用以對本 發明做任何限制者。 【實施方式】 請參閲圖四至圖八所示，本發明係為一種具冷卻 流道之螺帽，該螺帽4係設有複數個軸方向設置且貫 穿該螺帽4兩端並且環狀陣列之冷卻流道41，且該 冷卻流道4 1之兩端各設有連接該冷卻流道4 1之容 槽4 2，該容槽4 2具有一承靠面4 2 2及一内周面 4 2 1，該冷卻流道4 1係貫穿該承靠面42 2，該 容槽4 2係設有一密封件5，該密封件5具有上端面 5 3、下端面54及外環面52，該上端面5 3係設 5 1376470 有一迴流道51，且該上端面53係承靠於該承靠面 4 2 2，而該迴流道5 1係連接兩該冷卻流道4 1， 該冷卻流道4 1與迴流道5 1係形成多個s型連續的 循環流道8 0，該循環流道8 〇兩端係為冷卻液出入 口T，該外環面52係與該内周面421具有一失角 D，該夾角D係由上端面5 3向下端面5 4逐漸擴 張，因為該密封件5的外環面5 2係為錐面設計，故 外環面5 2與該内周面4 2 1之間才會有該夾角D , 而此夾角D之作用在於：當冷卻液流速增加時，因為 靠近該上端面5 3的壁厚較薄，故冷卻液衝擊該處時 會使該外環面52與内周面421的接觸面積增加 (因為該上端面5 3會向外擴張，如圖七符號κ係指 上端面5 3的擴張方向）’相對也使密封效果提升，故 可增加防漏效果； 另，該螺帽4兩端面依序蓋設有一防漏墊片6、 一端蓋7及複數個固定件γ，該固定件¥係穿設於該 端蓋7及防漏墊片6後與該螺帽4鎖固，使該端蓋7 施於該防漏墊片6 —壓力，使該防漏墊片6密封該容 槽4 2且提供該下端面5 4承靠，當冷卻液流速增加 時’該农封件5會受到冷卻液的衝擊，進而使該密封 件5對於該㈣w 6又產生—壓力，故使該密封件 5與防漏塾片6之間的密封效果提升，相對也增加防 6 漏效果；另，該防漏墊片6係設有兩穿孔6 1，該端 蓋7係設有相對該穿孔6 1之通孔7 1，該穿孔6 1 與通孔7 1係銜接該冷卻液出入口 T，該通孔7 1係 銜接外部冷卻機，使該螺帽藉由冷卻液的循環能降低 運行時所產生的溫度。 為求清楚說明本發明之實施特點，以下說明本發 明較習用進步之處及實用方式： 本發明藉由密封件之外環面的錐面設計，及防漏 墊片與密封件的配合，當冷卻液流速增加時，因為外 環面為錐狀設計，故使得密封件的上端面向外擴張， 使該外環面與内周面的接觸面積增加，另，該密封件 會受到冷卻液的衝擊，進而使該密封件對於該防漏墊 片又產生一壓力，故藉由該外環面與内周面的接觸面 積增加、及該密封件對於該防漏墊片所產生的壓力， 於冷卻液流速增加時能確實達到防漏效果，而流速降 低時則藉由固定件對於端蓋所產生的壓力即可達到防 漏效果，因為該密封件可針對冷卻液流速的高低來調 整密封程度，故可大幅提升防漏效果，並且延長密封 元件的使用壽命。 综所上述，所以本發明之『具有產業之可利用性』 應已毋庸置疑，除此之外，在本案實施例所揭露出的 特徵技術，於申請之前並未曾見於諸刊物，亦未曾被 1376470 公開使用，不但具有如上所述功效增進之事實，更具 有不可輕忽的附加功效，是故，本發明的『新穎性』 以及『進步性』都已符合專利法規，爰依法提出發明 專利之申請，祈請惠予審查並早日賜准專利，實感德 便。 以上所述實施例之揭示係用以說明本發明，並非 用以限制本發明，故舉凡數值之變化與等效元件之置 換，仍應隸屬本發明之範疇。1376470, invention: [Technical Field] The present invention relates to a cooling structure of a linear transmission element, and more particularly to a cooling flow path structure of a nut of a ball screw. [Prior Art] Referring to Figures 1 to 3, it is a nut 1 having a cooling flow passage, which is provided with a plurality of axial directions and penetrates both ends of the nut 1 and is cooled by the annular array. a flow channel 12, and each of the two ends of the cooling channel 12 is provided with a recirculation tank 1 1 for connecting the cooling channels 12, and the cooling channel 12 and the reflow tank 1 are formed into a plurality of S-type continuous a circulation flow path, the two ends of the circulation flow path are the inlet and outlet R of the coolant, the inlet and outlet R of the coolant are connected to the external cooling machine, and a leakage preventing gasket 2 is sequentially disposed on both ends of the nut 1 And the end cover 3, the leakage preventing spacer 2 and the end cover 3 are pierced by a plurality of fixing members G, and the fixing member G is locked with the nut 1 so that the end cover 3 is leakproof. The gasket 2 applies a pressure, so that the leakage preventing gasket 2 can seal the recirculation tank 1 1, so that the recirculation tank 1 1 forms a sealed return passage, but the structure of the cooling flow passage still has the following problems after being put into practical use. Must be improved: Because the pressure on the leak-proof gasket comes from the end cap, the pressure cannot be adjusted due to the flow rate of the coolant, when the coolant flow When increasing, a pressure is applied to the leakage preventing gasket, and when the leakage preventing gasket of the 3 1376470 is at this pressure for a long time, the leakage preventing gasket is fatigue-deformed when the coolant passes there. This may cause a problem of leakage of the coolant; in addition, the leak-proof gasket may be directly damaged due to the pressure, and the coolant may be bubbled. SUMMARY OF THE INVENTION Based on the problems of the above-described conventional techniques, the inventors of the present invention have succeeded in research and improvement, and the invention of the following inventions can be finally achieved. That is, the primary object of the present invention is to develop a sealing structure which can adjust the sealing force of the circulation path of the cooling liquid in accordance with the flow rate of the cooling liquid. In order to achieve the above object, the present invention is a nut having a cooling flow passage, and the nut is provided with a plurality of cooling flow passages disposed in an axial direction and extending through the ends of the nut and in an annular array, and the cooling flow is Each of the two ends of the track is provided with a receiving groove connecting the two cooling channels, the receiving groove has a bearing surface and an inner circumferential surface, and the cooling flow channel extends through the bearing surface, and the receiving groove is provided with a sealing member The sealing member has an upper end surface, a lower end surface and an outer annular surface, wherein the upper end surface is provided with a return passage, and the upper end surface is supported by the bearing surface, and the return flow channel connects the two cooling flow passages, each of which The cooling flow path and the return flow system form a plurality of S-shaped continuous circulation flow paths, the two ends of the circulation flow path being a coolant inlet and outlet, the outer annular surface having an angle with the inner circumferential mask, the angle being from the upper end The lower end surface is gradually expanded; the end faces of the nut are sequentially covered with a leakage preventing gasket and a cap 1 1376470, and the end cap is applied to the leakage preventing gasket, so that the leakage preventing gasket seals the receiving groove And providing the lower end bearing. Wherein, a plurality of fixing members are further disposed, and the fixing member is inserted into the end cover and the leakage preventing gasket to be locked with the nut, so that the end cover can apply a pressure to the leakage preventing gasket. Wherein, the leakage preventing gasket is provided with two through holes, and the end cover is provided with a through hole opposite to the through hole, and the through hole and the through hole are coupled to the coolant inlet and outlet 0, wherein the through holes are connected to the external cooler. For a better understanding of the features and technical aspects of the present invention, reference should be made to the description of the embodiments of the invention, and the accompanying drawings. By. [Embodiment] Referring to FIG. 4 to FIG. 8 , the present invention is a nut having a cooling flow passage, and the nut 4 is disposed in a plurality of axial directions and extends through the ends of the nut 4 and is annular. The cooling channel 41 of the array, and the two ends of the cooling channel 41 are respectively provided with a receiving groove 4 2 connecting the cooling channel 41, the receiving groove 4 2 has a bearing surface 42 2 and an inner circumference The cooling passage 4 1 extends through the bearing surface 42 2 , and the housing 42 is provided with a sealing member 5 having an upper end surface 53 , a lower end surface 54 and an outer annular surface 52 . The upper end surface 5 3 is provided with a return passage 51, and the upper end surface 53 is supported by the bearing surface 42 2 , and the return passage 51 is connected to the cooling passages 4 1 . The flow path 4 1 and the return flow path 5 1 form a plurality of s-type continuous circulation flow paths 80, and the both ends of the circulation flow path 8 are cooled liquid inlet and outlet T, and the outer annular surface 52 is connected to the inner circumferential surface 421. Having a lost angle D, the angle D is gradually expanded from the upper end surface 5 3 to the lower end surface 54. Because the outer annular surface 52 of the sealing member 5 is tapered, the outer annular surface 52 and the inner circumference Between 4 2 1 There is the angle D, and the angle D is used to: when the flow rate of the coolant increases, because the wall thickness near the upper end surface 53 is thin, the outer ring surface 52 and the inner circumference are caused when the coolant impacts the coolant. The contact area of the surface 421 is increased (because the upper end surface 53 is expanded outward, as shown in Fig. 7, the symbol κ refers to the direction of expansion of the upper end surface 53), and the sealing effect is also increased, so that the leakage preventing effect can be increased; The end faces of the nut 4 are sequentially provided with a leakage preventing gasket 6, an end cover 7 and a plurality of fixing members γ. The fixing member is disposed through the end cover 7 and the leakage preventing gasket 6 and the nut. 4 locking, so that the end cover 7 is applied to the leakage preventing gasket 6 - pressure, so that the leakage preventing gasket 6 seals the receiving groove 4 2 and provides the lower end surface 5 4 to bear when the coolant flow rate increases The agricultural sealing member 5 is subjected to the impact of the cooling liquid, so that the sealing member 5 generates a pressure again for the (four)w 6 , so that the sealing effect between the sealing member 5 and the leakage preventing cymbal sheet 6 is improved, and the anti-leakage sheet 6 is relatively increased. 6 leakage effect; in addition, the leakage preventing gasket 6 is provided with two perforations 6 1 , and the end cover 7 is provided with a through hole 7 1 opposite to the through hole 6 1 61 and the through hole 71 of the adapter coolant inlet and outlet lines T, the through-hole 71 line adapters external cooling machine, so that the nut by circulating a cooling fluid to reduce the temperature generated during operation. In order to clearly illustrate the implementation features of the present invention, the following description shows the advantages and practical ways of the present invention: The present invention utilizes the tapered surface design of the outer ring surface of the sealing member, and the cooperation of the leakage preventing gasket and the sealing member. When the flow rate of the coolant increases, because the outer ring surface has a tapered design, the upper end surface of the sealing member is expanded outward, so that the contact area between the outer ring surface and the inner circumferential surface is increased, and the sealing member is subjected to the impact of the coolant. Further, the sealing member generates a pressure against the leakage preventing gasket, so that the contact area of the outer annular surface and the inner circumferential surface increases, and the pressure generated by the sealing member against the leakage preventing gasket is cooled. When the liquid flow rate is increased, the leakage prevention effect can be surely achieved, and when the flow rate is lowered, the leakage pressure can be achieved by the pressure generated by the fixing member on the end cap, because the sealing member can adjust the sealing degree according to the flow rate of the coolant. Therefore, the leakage prevention effect can be greatly improved, and the service life of the sealing member can be prolonged. In view of the above, the "industry availability" of the present invention should be unquestionable. In addition, the characteristic techniques revealed in the embodiments of the present invention have not been seen in publications before the application, nor have they been used in 1376470. The public use not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention have met the patent regulations, and the application for the invention patent is filed according to law. Pray for the review and early grant of patents. The above description of the embodiments is intended to be illustrative of the invention, and is not intended to limit the scope of the invention.
8 1376470 【圖式簡單說明】 圖一係為習知技術之具冷卻流道之螺帽與冷卻流 道所需配件分解圖。 圖二係為習知技術之具冷卻流道之螺帽與冷卻流 道所需配件組合圖。 圖三係為圖二A _ A剖視圖。 圖四係為本發明具冷卻流道之螺帽與冷卻流道所 需配件分解圖。 圖五係為本發明具冷卻流道之螺帽另一視角與冷 卻流道所需配件分解圖。 圖六係為本發明具冷卻流道之螺帽與冷卻流道所 需配件組合圖。 圖七係為圖六B _ B剖視圖。 圖八係為本發明具冷卻流道之螺帽的冷卻液之循 環路徑圖。 9 1376470 【主要元件符號說明】 習知技術 1 螺帽 1 1 迴流槽 1 2 冷卻流道 2 防漏墊片 3 端蓋 G 固定件 R 冷卻液出入口 R 變形處 本發明 4 螺帽 4 1 冷卻流道 4 2 容槽 4 2 1 内周面 4 2 2 承靠面 5 密封件 5 1 迴流道 5 2 外環面 5 3 上端面 5 4 下端面 6 防漏墊片 6 1 穿孔 7 端蓋 7 1 通孑L 8 0 循環流道 D 夹角 K 擴張方向 Y 固定件 T 冷卻液出入口8 1376470 [Simple description of the drawings] Figure 1 is an exploded view of the accessories required for the nut and cooling channels of the cooling runners of the prior art. Figure 2 is a combination of the required components for the nut and cooling runners of the cooling runners of the prior art. Figure 3 is a cross-sectional view of Figure 2A_A. Figure 4 is an exploded view of the accessories required for the nut and cooling runner of the cooling runner of the present invention. Figure 5 is an exploded view of the accessories required for the other view of the nut with the cooling runner and the cooling runner. Figure 6 is a combination of the components required for the nut and cooling runner of the cooling runner of the present invention. Figure 7 is a cross-sectional view of Figure 6B_B. Figure 8 is a circulation path diagram of the coolant of the nut having the cooling runner of the present invention. 9 1376470 [Explanation of main component symbols] Conventional technology 1 Nut 1 1 Recirculation groove 1 2 Cooling flow path 2 Leakproof gasket 3 End cap G Fixing piece R Cooling fluid inlet and outlet R Deformation Where the present invention 4 Nut 4 1 Cooling flow Lane 4 2 Cuvette 4 2 1 Inner peripheral surface 4 2 2 Bearing surface 5 Seal 5 1 Return path 5 2 Outer ring surface 5 3 Upper end face 5 4 Lower end face 6 Leak-proof gasket 6 1 Perforation 7 End cap 7 1通孑L 8 0 Circulating flow path D Angle K Expansion direction Y Fixing piece T Cooling fluid inlet and outlet