200934963 九、發明說明： 【發明所屬之技術領域】 本發明係為一種線性滑執之配件，尤指一種線性滑軌 之保持器。 【先前技術】 按，由於精密進給系統的不斷研發改進，線性傳動 技術及其產品已經成為許多精密機具中最重要的部份， 各式各樣的線性機構產品已經廣泛地進入人類生活、加 工工廠與高科技設備之内，例如：線性滑執；雖然線性 機構技術的發展十分迅速，但消費使用者仍然需要技術 不斷的提昇，因此也產生許多仍待開發的問題，而相關 技術產業也都在積極研發可以有效改善線性機構的各種 新創作、新發明。 敖習知保持器如第八圖所示，該保持器4係裝設於 滑塊2底部兩側，主要使滾動件3保持於滑塊2之溝槽2 _ 1上，且該保持器4之兩端各設有一定位柱41，該定位 柱41係與端蓋3上之插槽3 1配合插固；惟，該保持器 其安裝步驟為：首先，先將一端蓋3固定於滑塊2之一端 (該端蓋㈣方式以螺件鎖固），接著，將該保持器4一 端之定位柱4 1與該端蓋3插固，而後再將另一端蓋3與 5 200934963 該保持器4另一端之定位柱4 1插固，並將其端蓋3固定 於滑塊2之端面，即完成保持器4之安裝；然而，此習知 保持器4與端蓋3之裝配方式之結構有以下問題產生·· 其一，在拆、裝的過程都需將端蓋拆卸後，才可拆、 裝該保持器，故其拆、裝的過程較為複雜。 其二，該保持器因中段部位無設置固定結構，如保持 器為長規格時會有一徑向變形產生，造成滾動元件脫落的 〇問題發生。 據此，習知保持器之結構上，無法達到快速拆卸之功 能，且最迫切改善的是該保持器因中段部位無固定結構， 如為長度較長之規格時會有一徑向變形產生，造成無法將 滾珠保持於滑軌之溝槽上，也就等於失去保持器之功用， 實有做為進一步改良之必要。 ® 呈上述，為改善前述習知技術的問題，如美國第 6939045號專利案，揭露一種保持器中段延伸出一定位 塊，該定位塊係設有一定位柱；滑塊相對於該定位塊係 設有一凹槽，該凹槽係提供該定位塊設置，且該滑塊相 對於該定位柱係設有一定位孔，該定位柱係插設於該定 位孔中，以防止該保持器產生徑向變形，達到防止該保 持器失效的目的；但此習知技術的問題點為，該滑塊之 6 200934963 凹槽與定位孔須要有兩次的加工程序，第一次加工程 序：需先以铣刀铣製該凹槽，第二次加工程序：將铣刀 更換成鑽頭再加工該定位孔（通常CNC換刀需約20秒 左右），這樣一來，該滑塊需藉由兩種刀具才能將此部份 * 加工完畢，如大批量製造則每一滑塊所需加工的時間累 計下來無形中增加了許多製造成本，故此問題點實有做 為進一步改良之必要。 〇 【發明内容】 基於上述習知保持器之問題點，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，減少滑塊之加工程序（減 少CNC換刀程序），並降低製造成本。 為達上述之目的，本發明係為一種具保持器之線性滑 ©軌，係包含： 一滑軌，其兩側設有若干滾動槽； 一滑塊，係套設於該滑軌上，且相對於該滑軌之滾動 槽係設有一滾動溝；該滑塊係設有若干轴向之迴流扎，另 & 於兩側底部設有一定位槽； 兩端蓋，係各別裝設於該滑塊之兩端面，其上設有若 干迴流道，該迴流道之兩端各別銜接該迴流孔、滚動槽以 7 200934963 及滾動溝； 若干滾動件，係裝設於該滾動槽及滾動溝之間. =保持器’其藉由兩端固定於端蓋，使該保持器， 於5亥滑塊之内側之底部， ' 义 ^ ^ 1巧保持器設有一保持面及一定办 塊，該保持面係提供滾動 疋位 宝刑夕έ士姐 千钗罪该疋位塊之構型為一丁 籌’且於丁字型結構兩端各設有一半圓 ❹ 圓角的構魅要是配人干㈣【該+ 降低梦n 型與加工路徑的考量，以 “成本’如為別種構型(如：贿圓形、—直線段兩 端各別連接一 1/4 直綠#又兩 、圓角、方形）亦可應用於該定位塊 仁相對加工成本會提高】；該滑塊之定位槽之輪廊與 設置位置係相對於該定位塊，㈣定位塊係設置於該定位 槽上’以防止該簡n因滾動件_擊產生徑向變形。 值得一提的是，該保持器之定位塊與該滑塊之定位槽 之構型係經過縝密㈣考才設計出τ字型之構型，因為該 :塊之定位槽為T字型之結構，於CNC加工時只需藉由 -種刀具（例如：端铣刀）就可將該定位槽加卫完成，如 此來，此構型大幅縮短滑塊加工時間（與習知技術相較 下’’々省下20秒左右）’如以大批量製造的角度觀之，所省 下的製程時間就非常可觀，故本發明相對降低該滑塊之製 造成本。 200934963 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】 本發明之實施例請參閱第二圖至第十二圖所示，本 ©發明係為一種具保持器之線性滑執，係包含： 一滑轨1，其兩侧設有若干滾動槽1 1 ; 一滑塊2，係套設於該滑軌1上，且相對於該滑軌1 之滾動槽1 1係設有一滾動溝2 1 ;該滑塊2係設有若干 軸向之迴流孔2 3，另於兩側底部設有一定位槽2 2 ; 兩端蓋3 ’係各別裝設於該滑塊2之兩端面，其上設 有若干迴流道3 1，該迴流道3 1之兩端各別銜接該迴流 ®孔2 3、滾動槽1 1以及滚動溝2 1 ; 若干滾動件D，係裝設於該滾動槽2丄及滾動溝2工 之間； 兩保持器4、4八、43，其藉由兩端固定於端蓋3, 使該保持器4、4 A、4 B安裝於該滑塊2之内侧之底 部，該保持器4、4 A、4 B設有一保持面4 i、4 i a、 4 1 B及一定位塊4 2、4 2 A、4 2 B，該保持面4工、 9 200934963 4 1 A、4 1 B係提供滾動件D承靠，該定位塊4 $、4 2 A、4 2 B之構型為一T字型之結構，且於τ字型結構 兩端各設有一半圓角421、42lA、42lB ;該滑 塊2之定位槽2 2之輪廟與設置位置係相對於該定位^ .42、42Α、42Β，且該定位塊4 2、4 2 a、4 2 B係設置於該定位槽2 2上。 ® 卩上所述為各元件細部說明及其相配關係，以 下說明本實施例之實施方式： 本發明之第一實施例，請參閱第二至五圖所示，本實 施例主要於端蓋3兩側底部各設有一固定槽3 2,該固定 槽3 2係由底部Η與内端面G向内開設，且於内設有一凸 出邛3 2 1，該保持器4兩端各設有一長條型之固定柱4 3 ’該岐柱4 3係設有-倒勾部4 3 i ;於安裝該保持 ❹器4時將該固定柱43係固設於該固定槽32内，且藉由 4倒勾43 1與凸出部321相互卡合位，同時該保 持益4之定位塊4 2也-併設置與該滑塊2之定位槽2 2中；另，請參閱第四圖所示，該保持器4係藉由該保持 面4 1ϋ動件d承靠，以防止滾動件D掉出滑塊2。 本發明之第二實施例，請參閱第六至九圖所示，本實 200934963 施例主要與第一實施例不同在於：該保持器4 A兩端係設 有-呈L型之固定部4 3 A，該固定部4 3A之端部係設 有一倒勾部4 3 1 A ;該端蓋3兩侧各設有一固定槽2 2，該固定槽3 2係由外端面J與内側面j向内開設，且 於内設有一凸出部3 2 1。請參閱第六圖所示，於安裝時 順著安裝方向F將該保持器4A兩端之固定部4 3a固 設於該固定槽3 2中，且藉由該倒勾部4 3 1入與凸出部 〇 3 2 1相互卡合定位’同時該保持器4厶之定位塊4 2A 也一併設置與該滑塊2之定位槽2 2中。 本發明第二貫施例，凊參閱第十至十二圖所示，本實 施例主要與第二實施例不同在於：該保持器4 B 一端係設 有一定位柱4 4 B另一端則設有與第二實施例相同之固 定部4 3 B (此結構與第二實施例相同，在此不在多作贅 ❹述）；請參閱第十-B圖所示，該端蓋3 -側係設有一由 内端面G開設之定位孔3 3，另一側設有與第二實施例相 同之固定槽3 2 (此結構與第二實施例相同，在此不在多 作贅述）；於安裝該保持器4 B時，係將該保持器4 8之 定位柱4 4B係插設於該端蓋3之定位孔3 3中，再將該 固定部4 3 B固設於該固定槽3 2中，並使該倒勾部4 3 1 B與該凸出部3 2 1相互卡合，同時該保持器4 B之定 200934963 位塊4 2 B也一併設置與該滑塊2之定位槽2 2中。 另外’本發明所有實施例於滑塊裝配作業時，皆可先 將兩端蓋裝設於滑塊兩端面後再安裝保持器，這樣一來， 可使裝配的時間縮短，相對也可降低製造成本。該保持器 係藉由塑膠原料以模具射出成型，故可大量生產。 ❹ 综所上述，本發明係縮短滑塊之加工時間，相對製造 成本也降低，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 M查並早日賜准專利，實感德便。 卩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。 〜 12 200934963 【圖式簡單說明】 端蓋及滚動件之分 第一圖為習知技術滑塊、保持器 解圖。 帛二圖為本發明第-實施例滑塊、保持器、端蓋及滚 動件之分解圖。 第三圖為本發明第一實施例滑塊與保持器之關係圖。 第四圖為本發明滑塊之定位槽與保持器之定 © 剖視圖。 第五圖為本發明第一實施例保持器之立體圖。 第六圖為本發明第二實施例滑塊與保持器之關係圖。 第七圖為本發明第二實施例端蓋與保持器之關係圖。 第八A圖為本發明第二實施例端蓋前視圖。 第八B圖為第八A圖之a一A剖視圖。 〇 第九圖為本發明第二實施例保持器之立體圖。 第十圖為本發明第三實施例端蓋與保持器之關係圓。 第十一A圖為本發明第三實施例端蓋前視圓。 第十一B圖為第八a圖之A — A剖視圖。 第十二圖為本發明第三實施例保持器之立體圖。 13 200934963 【主要元件符號說明】 (習知技術） 2 滑塊 2 1 溝槽 3 端蓋 3 1 插槽 - 4 保持器 B 滾動件 4 1 定位柱 q (本發明） 1 滑軌 11 滾動槽 2 滑塊 2 1 滾動溝 2 2 定位槽 2 3 迴流孔 3 端蓋 3 1 迴流道 3 2 固定槽 3 3 定位孔 321 凸出部 ❹ 4 保持1§ 4 1 保持面 4 2 定位塊 421 半圓角 4 3 固定柱 431 倒勾部 4 A 保持器 41A 保持面 4 2 A 定位塊 4 2 1 A 半圓角 4 3 A 固定部 4 3 1 A 倒勾部 4 B 保持器 41B 保持面 4 2 B 定位塊 4 2 1 B 半圓角 200934963 4 3 B 固定部 4 3 1 Β 4 4 B 定位柱 D 滾動件 F 安裝方向 G 内端面 Η 底部 J 外端面 I 内侧面 倒勾部200934963 IX. Description of the Invention: [Technical Field of the Invention] The present invention is a linear sliding attachment, and more particularly a linear sliding rail holder. [Prior Art] According to the continuous development and improvement of precision feed systems, linear drive technology and its products have become the most important part of many precision machines. Various linear mechanism products have entered human life and processing extensively. Within the factory and high-tech equipment, for example: linear slippery; although the development of linear mechanism technology is very rapid, consumer users still need continuous improvement of technology, so there are still many problems still to be developed, and related technology industries are also Actively researching and developing various new creations and new inventions that can effectively improve linear institutions. As shown in the eighth figure, the retainer 4 is mounted on both sides of the bottom of the slider 2, mainly for holding the rolling member 3 on the groove 2_1 of the slider 2, and the holder 4 Each of the two ends is provided with a positioning post 41. The positioning post 41 is inserted into the slot 31 of the end cover 3; however, the mounting step of the retainer is as follows: First, the end cap 3 is first fixed to the slider. One end of the second end (the end cover (four) is locked by a screw), and then the positioning post 4 1 at one end of the retainer 4 is inserted into the end cap 3, and then the other end cap 3 and 5 200934963 the retainer 4 The positioning post 4 1 at the other end is inserted into the end, and the end cover 3 is fixed to the end surface of the slider 2, that is, the installation of the retainer 4 is completed; however, the structure of the conventional assembly of the retainer 4 and the end cover 3 is The following problems occur: First, in the process of disassembly and assembly, the end cover needs to be disassembled before the retainer can be disassembled and assembled, so the process of disassembly and assembly is complicated. Secondly, the retainer has no fixed structure due to the middle portion. If the retainer is of a long specification, a radial deformation occurs, causing a problem of the rolling element falling off. Accordingly, the structure of the conventional retainer cannot achieve the function of quick disassembly, and the most urgent improvement is that the retainer has no fixed structure due to the middle portion, and if there is a long length, there is a radial deformation, resulting in The inability to hold the ball on the groove of the slide rail is equivalent to the loss of the function of the retainer, which is necessary for further improvement. In the above, in order to improve the problems of the prior art, for example, in US Pat. No. 6,390,045, a middle portion of a retainer extends out of a positioning block, the positioning block is provided with a positioning post; the slider is arranged relative to the positioning block. Having a groove, the groove is provided with the positioning block, and the slider is provided with a positioning hole relative to the positioning post, the positioning post is inserted into the positioning hole to prevent radial deformation of the retainer The purpose of preventing the holder from failing is; however, the problem of the prior art is that the slider 6 200934963 groove and positioning hole need to have two processing procedures, the first processing procedure: first need to use a milling cutter Milling the groove, the second machining program: replacing the milling cutter with a drill bit and machining the positioning hole (usually about 20 seconds for the CNC tool change), so that the slider needs two tools to be used. This part* is finished. If it is manufactured in large quantities, the accumulated processing time of each slider will increase the manufacturing cost invisibly, so this problem is necessary for further improvement. 〇 发明 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 That is, the primary object of the present invention is to reduce the processing procedure of the slider (reducing the CNC tool change procedure) and to reduce the manufacturing cost. For the purpose of the present invention, the present invention is a linear sliding guide rail with a retainer, comprising: a slide rail having a plurality of rolling grooves on both sides thereof; a slider sleeved on the slide rail, and a rolling groove is provided with respect to the rolling groove of the sliding rail; the sliding block is provided with a plurality of axial reflowing bars, and the other is provided with a positioning groove at the bottoms of the two sides; the two end covers are respectively installed in the The two ends of the slider are provided with a plurality of return passages, and the two ends of the return passage respectively connect the return hole and the rolling groove to 7 200934963 and the rolling groove; a plurality of rolling members are mounted on the rolling groove and rolling Between the grooves. = retainer's which are fixed to the end cover by both ends, so that the holder is at the bottom of the inner side of the 5th slide, and the 'Yi ^ ^ 1 retainer is provided with a holding surface and a certain block. The holding surface provides a rolling position, the sin of the sorcerer, the sin of the scorpion, the configuration of the squatting block, and the configuration of the squatting block at each end of the T-shaped structure. (4) [This + reduces the dream n-type and processing path considerations, with the "cost" as a different configuration (such as: bribery Shape, - the two ends of the straight line are connected to a 1/4 straight green # two, rounded, square) can also be applied to the positioning block, the relative processing cost will increase]; the slider of the positioning groove of the corridor and The position is set relative to the positioning block, and (4) the positioning block is disposed on the positioning groove to prevent the simple deformation of the roller due to the rolling element. It is worth mentioning that the positioning block of the holder and the sliding block The configuration of the positioning groove of the block is designed by the meticulous (four) test to design the τ shape, because the positioning groove of the block is a T-shaped structure, and only a type of tool is used for CNC machining (for example: The end mill can be used to fix the positioning groove. In this way, the configuration greatly shortens the processing time of the slider (as compared with the prior art, ''々20 seconds or so)' is manufactured in large quantities. From a perspective point of view, the process time saved is very considerable, so the present invention relatively reduces the manufacturing cost of the slider. 200934963 For a further understanding of the features and technical contents of the present invention, please refer to the following description of embodiments of the present invention. And the schema, however this embodiment and The present invention is for illustrative purposes only and is not intended to limit the invention. [Embodiment] Embodiments of the present invention are shown in the second to twelfth drawings. The linear sliding control comprises: a sliding rail 1 having a plurality of rolling grooves 1 1 on both sides thereof; a slider 2 sleeved on the sliding rail 1 and rolling groove 1 relative to the sliding rail 1 The 1 series is provided with a rolling groove 2 1 ; the sliding block 2 is provided with a plurality of axial return holes 2 3 , and a positioning groove 2 2 is provided at the bottoms of both sides; the two end covers 3 ′ are respectively installed on the sliding The two end faces of the block 2 are provided with a plurality of return passages 3 1, and the two ends of the return passages 3 1 are respectively connected to the reflow® holes 2 3, the rolling grooves 1 1 and the rolling grooves 2 1 ; Mounted between the rolling groove 2丄 and the rolling groove 2; two retainers 4, 4, and 43, which are fixed to the end cover 3 by both ends, and the retainers 4, 4 A, 4 B are installed At the bottom of the inner side of the slider 2, the holders 4, 4 A, 4 B are provided with a holding surface 4 i, 4 ia, 4 1 B and a positioning block 4 2, 4 2 A, 4 2 B, the holding Face 4, 9 200934963 4 1 A, 4 1 B is provided with a rolling member D, the positioning block 4 $, 4 2 A, 4 2 B is configured as a T-shaped structure, and half rounded corners 421 and 42lA are respectively provided at both ends of the τ-shaped structure. 42lB; the wheel temple of the positioning slot 2 of the slider 2 and the setting position are relative to the positioning ^.42, 42Α, 42Β, and the positioning block 4 2, 4 2 a, 4 2 B is set in the positioning Slot 2 2 on. The description of the components and their matching relationship are described above. The following describes the embodiments of the present embodiment: In the first embodiment of the present invention, please refer to the second to fifth figures. This embodiment is mainly used for the end cover 3. Each of the two sides of the two sides is provided with a fixing groove 32. The fixing groove 32 is opened inwardly from the bottom end and the inner end surface G, and a protruding 邛3 2 1 is disposed therein. The fixing post 4 3 ' is provided with a -hook portion 4 3 i; the fixing post 43 is fixed in the fixing groove 32 when the retaining device 4 is mounted, and 4, the barb 43 1 and the protruding portion 321 are engaged with each other, and the positioning block 42 of the retaining benefit 4 is also disposed in the positioning groove 2 2 of the slider 2; The retainer 4 is supported by the retaining surface 41 to prevent the rolling member D from falling out of the slider 2. For the second embodiment of the present invention, please refer to the sixth to ninth embodiments. The embodiment of the present invention 200934963 is mainly different from the first embodiment in that the holder 4A is provided with a fixing portion 4 in an L-shape. 3A, the end of the fixing portion 4 3A is provided with a barb portion 4 3 1 A; the end cover 3 is provided with a fixing groove 22 on both sides thereof, and the fixing groove 32 is composed of an outer end surface J and an inner side surface j It is opened inward and has a projection 3 21 in it. Referring to FIG. 6 , the fixing portion 4 3 a at both ends of the holder 4A is fixed in the fixing groove 3 2 along the mounting direction F during installation, and the hook portion 4 3 1 is inserted into the housing. The projections 2 3 2 1 are engaged with each other 'the same time' and the positioning block 4 2A of the holder 4 也 is also disposed in the positioning groove 2 2 of the slider 2 . The second embodiment of the present invention, as shown in the tenth to twelfth drawings, is different from the second embodiment in that the retainer 4 B is provided with a positioning post 4 4 B at one end and the other end is provided. The same fixing portion 4 3 B as the second embodiment (this structure is the same as that of the second embodiment, and will not be described here); please refer to the tenth-B diagram, the end cap 3 - side is provided There is a positioning hole 33 formed by the inner end surface G, and the other side is provided with the same fixing groove 3 2 as the second embodiment (this structure is the same as that of the second embodiment, and will not be described here); In the case of the device 4B, the positioning post 4 4B of the holder 48 is inserted into the positioning hole 3 3 of the end cover 3, and the fixing portion 4 3 B is fixed in the fixing groove 3 2 . And the hook portion 4 3 1 B and the protruding portion 3 2 1 are engaged with each other, and the 200934963 bit block 4 2 B of the holder 4 B is also disposed together with the positioning slot 2 2 of the slider 2 in. In addition, in all the embodiments of the present invention, the sliders can be assembled on both ends of the slider before the slider assembly operation, so that the assembly time can be shortened and the manufacturing can be reduced. cost. The holder is injection molded from a plastic material, so that it can be mass-produced.上述 In view of the above, the present invention shortens the processing time of the slider and reduces the manufacturing cost. Therefore, the "industrial availability" of the present invention should be undoubted, and in addition, it is revealed in the embodiment of the present invention. The characteristic technology has not been seen in publications before the application, nor has it been used publicly. It not only has the fact that the effect is improved as described above, but also has additional functions that cannot be neglected. Therefore, the novelty and progress of the present invention. Sexuality has been in compliance with the patent laws and regulations, and the application for invention patents has been filed according to law, and it is prayed for the review of M and the early grant of patents. The disclosure of the above-described embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention. ~ 12 200934963 [Simple description of the diagram] The end cover and the rolling parts are divided into the first figure is the conventional technology slider, retainer solution. Fig. 2 is an exploded view of the slider, the retainer, the end cap and the rolling member of the first embodiment of the present invention. The third figure is a diagram showing the relationship between the slider and the holder of the first embodiment of the present invention. The fourth figure is a sectional view of the positioning groove and the retainer of the slider of the present invention. Figure 5 is a perspective view of a retainer of the first embodiment of the present invention. Figure 6 is a diagram showing the relationship between the slider and the holder of the second embodiment of the present invention. Figure 7 is a diagram showing the relationship between the end cap and the retainer of the second embodiment of the present invention. Figure 8A is a front elevational view of the end cap of the second embodiment of the present invention. Figure 8B is a cross-sectional view taken along line a-A of Figure 8A. 9 is a perspective view of a retainer of a second embodiment of the present invention. The tenth figure shows the relationship between the end cap and the retainer according to the third embodiment of the present invention. Eleventh A is a front view circle of an end cap according to a third embodiment of the present invention. Figure 11B is a cross-sectional view taken along line A - A of the eighth diagram. Figure 12 is a perspective view of a retainer of a third embodiment of the present invention. 13 200934963 [Explanation of main component symbols] (Priority technology) 2 Slider 2 1 Groove 3 End cap 3 1 Slot - 4 Retainer B Roller 4 1 Positioning post q (Invention) 1 Slide rail 11 Rolling groove 2 Slider 2 1 Rolling groove 2 2 Positioning groove 2 3 Return hole 3 End cover 3 1 Return path 3 2 Fixing groove 3 3 Positioning hole 321 Projection ❹ 4 Hold 1 § 4 1 Hold surface 4 2 Positioning block 421 Half round 4 3 Fixing post 431 Back hook 4 A Retainer 41A Holding surface 4 2 A Positioning block 4 2 1 A Half round 4 3 A Fixing part 4 3 1 A Back hook 4 B Retainer 41B Holding surface 4 2 B Positioning block 4 2 1 B Half-rounded corner 200934963 4 3 B Fixed part 4 3 1 Β 4 4 B Positioning column D Rolling element F Mounting direction G Inner end face 底部 Bottom J Outer end face I Inside side barb
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