經濟部智慧財產局員工消費合作社印製 436573 A7 __B7____ 五、發明說明（1 ) 發明背景 本發明係關於一種向上滾動或向上作動之上掀式門i 特別係關於一種用於上掀式車庫門之滾子組合。 向上作動之上掀式門通常係作爲車庫門，而通常之結 構係以很多段門板鉸接組合。該等上掀式門係通常以一對 L形滑軌支撐，以使該門可以從垂直關閉的位置向上移動 至水平開啓的位置。爲達成開啓及關閉的動作，該車庫門 係採用複數的滾子支撐元件鄰接裝置於門之側緣。各個滾 子支撐單元之滾子係滾動卡合並支撐於該靜止之L形滑軌 中。一般而言，該滾子支撐單元同時包含一對鉸鏈單件| 各鉸鏈單件係分別固定於該鄰接門之區域且以相反方向設 置。該對鉸鏈單件支撐一金屬鉸鏈管，於該鉸鏈管中可收 容該滾子之桿部。 各種傳統滾子支撐單元之滾子係由金屬及介於該滾子 及該L形滑軌間之金屬對金屬接觸件所組成，當車庫門由 一位置拉至另一位置時會產生極大的噪音。此外，該等滾 子支撐單元係通常由一般的鋼材所製成以降低材料成本。 雖然’該等滾子支撐單元係通常裝置於該上掀式車庫門的 內側’其所收容之外露元件係會導致生銹或其他材料腐蝕 的問題。如是之材料腐蝕則會增加門的噪音，並導致該滾 子支撐單元失去作用。 爲改善上述之滾子支撐單元，則有部份的傳統滾子支 撐單元其中係安裝塑膠製成之滾子並滾動裝置於一金屬滾 桿。如是之滾子支撐單元所造成的噪音問題則低於裝置金 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱) --III--11'* -—111--- {請先間讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 436573 A7 ___B7___五、發明說明（2 ) 屬滾子之滾子支撐單元。此外，塑膠滾子則不會導材料腐 的情形發生。然而該等滾子支撐單元在製造上較全金屬製 成之滾子單元更昂貴，也因是在成本上實不具競爭力。 發明總論 明言之，本發明較佳之應用形式係車庫門滾子組合， 其包括一桿及一聚合材質所製成之滾子。該桿具有一軸段 及一空轉段。該軸段係裝置於該車庫門藉以該空轉段係置 於距離該門之側端緣之一段距離處。一滾子之肩部徑向向 內延伸自該滾子之內表面且係置於該空轉段之一圓周槽之 中。該滾子之一外部區域係囈合於該導入向側邊之一 L形 滑軌之中。 該桿及該滾子係各自爲一單件，該桿係爲強力尼龍之 玻璃纖維所製成’而該滾子係爲耐衝擊之尼龍所製成者爲 佳。 該空轉部包括一遠端肋部及一遠端坡狀表面，其與一 近端肋部及一近端坡狀表面係爲該槽所分隔。該遠端及近 端坡狀表面延伸自該遠端及近端肋部之外表面，相對到達 該槽之外表面。該滾子包括遠端及近端坡狀表面其係分別 相對置於該空轉段的遠端及近端坡狀表面。該空轉段進一 步具有一坡狀表面並延伸自該遠端肋部之外表面延伸至該 空轉段之遠端表面。在裝置該滾子於該桿時，該滾子之遠 端表面上滑於該空轉段之坡狀，彈性拉扯該滾子。當該滾 子之肩部係置於該槽之中，該滾子則變回其原有的尺寸， <請先閱讀背面之注意事項再填寫本頁) 裝----- 訂——------ .结 本纸張尺度適用中國國家標準（CNS)A4規格（2】〇χ 297公釐） -5- 436573 A7 ____B7 __—- 五、發明說明（3 ) 塞於該肩部於該槽內以固持該滾子於該桿上。 本發明之B的係在於提供一種可用於上掀式門的新型 改良滾子組合。 本發明之另一目的係在於提供一種新型改良滾子組合 ，其不致造成腐蝕且在操作時噪音較小。 本發明之又一目的係在於提供一種新型改良滾子組合 ，其可以較低成本製造之。 參酌後續之圖式及說明將可了解本發明其他的目的及 優點a 圖式說明 本發明之各種目的及其優點藉由配合下列圖式及說明 可以使熟悉本項技術者更爲了解，其中： 圖1係部份以虛線繪製之車庫門平面圖，其具有本發 明之滾子組合。 圖2係圖1所示之滾子組合之放大立體圖。 圖3係圖2所示之滾子組合之剖視圖。 圖4係圖3所示區域4之放大剖視圖。 圖5係部份以虛線繪製如圖2所示之滾子組合中的滾 子。 主要元件對照表 1 〇 滾子組合 1 2 滾子 (諳先閱讀背面之;i意事項再填寫本頁) 裝---- n n 訂---------綉 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用令國國家標準（CNS)A4規格（210 X 297公釐) - 經濟部智慧財產局員工消費合作社印製 436573 A7 _____B7_五、發明說明（4 ) 13 空轉段 14 桿 16 內表面 18 車庫門 2 0 側端緣 2 2 固定距離 2 4 L形滑軌 2 6 ，2 6 一 門板 28 鉸鏈單件 30 鉸鏈套管 3 2 軸段 3 4 外直徑 3 8 過渡段 4 2 逃料凹陷 4 4 槽 4 6 遠端表面 4 8 近端表面 5 0 遠端肋部 5 2 近端肋部 5 4 1 5 6 * 6 2 外表面 6 6 外部 7 2 中部 7 4 遠端坡狀表面 76 近端坡狀表面 (請先閱讀背面之注意事項再填寫本頁) 震--------tT--.-------線 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 436573 A7 B7 五、發明說明（5) 8 0 內表面 8 2 間隔 8 6 潤滑油層 較佳實施例之詳細說明 後續之圖式中相同的元件均將以相同的標號標示，本 發明之車庫門滾子組合係以標號1 〇標註之。各滾子組合 丄0包含一滾子1 2係轉動裝置於桿1 4之空轉段1 3上 。數個該滾子組合1 0係沿著該車庫門1 8之內表面1 6 的側端緣2 0裝置於該內表面1 6上，而該空轉段1 3延 伸超過該門1 8之側端緣2 0，而各個滾子1 2係置於距 離該門1 8之側端緣2 0之固定距離上。該車庫門1 8上 之各滾子12係滾動卡合並支撐於一對靜置之L形滑軌 2 4中，該L形滑軌2 4容許該門1 8自垂直關閉的位置 向上移動至水平開啓的位置。 傳統上’車庫門1 8係包括多段的門板2 6，2 6 z 鉸接一起，一對鉸鏈單件2 8係用以連接二鄰接之門板 26 ’ 26 >並共同支撐一金屬鉸鏈管體30，該管體可 收納該滾子組合1 0之桿1 4於其中。一般而言該桿1 4 係可作爲一樞轉銷以連接該等之鉸鏈單件2 8以及門板 2 6，2 6 〜 該桿14係以高強度之聚合材料所製之一體成型單體 ，於實施例中，該桿1 4係以強力尼龍玻璃纖維利用壓鑄 方法所製成。該桿1 4包含一圓柱形軸段3 2及一空轉段 本紙張尺度適用中國國家標準（CNS)A4規格（210 * 297公釐） (請先閱蹟背面之注意事項再填寫本頁) 裝--------訂---------錄 經濟部智慧財產局員工消費合作社印製 436573 A7 ___ B7 ' ------ ---- 五、發明說明（6 ) 1 3。因爲該滾子組合1 〇係可與傳統的滾子支撐單元交 換使用’該軸段3 2的外徑3 4及長度3 6係加以選定以 使其可配合傳統之鉸鏈管體3 0使用。如圖2及3所示之 實施例中’一過渡段3 8係置於該軸段3 2與該空轉段 1 3之間。該過渡段3 8之外徑係大於該軸段3 2之外徑 3 4以對該桿1 4增加其強度。該軸段3 2與該過渡段 3 8之組合長度（3 6 + 4 0 )係加以選定以使該空轉段 1 3可被適當地置於一傳統型車庫門的l形滑軌2 4之中 。如圖2所示’該軸段3 2及該過渡段3 8係各自包含複 數逃料凹陷4 2。該等逃料凹陷4 2係用以減少聚合材料 的使用’使該桿1 4可以最少材料製成但又不影響其強度 0 經濟部智慧財產局員工消費合作社印製 請參照圖4 ’該空轉段1 3係具有一實質爲環形圓周 狀之凹槽4 4係置於該空轉段1 3之遠端表面4 6及近端 表面4 8之間。較佳者係將該槽4 4設置於距離該遠端表 面4 6與近端表面4 8相等距離之處。該槽4 4係定義實 Ιι爲環形之is端及近端肋部5 0，5 2，該等肋部係具有 實質相等之直徑。該遠端肋部5 0之近端面5 8及該近端 肋部5 2之遠端面6 0係各形成一斜面延伸自一相對肋部 之外表面54 ’ 5 6至該槽44之外表面6 2。該遠端肋 部5 0之遠端面6 4則形成一坡狀，其係縱向橫向延伸自 該遠端肋部5 0之外表面5 4而至該空轉段1 3之遠端表 面4 6。該空轉段1 3可同時具有一或多個逃料凹陷，該 等逃料凹陷係用以減少聚合材料的使用，使該桿1 4可以 本紙張又度適用中國國家標準（CNS)A4規格（210 X 297公复) -9^ 4 3 657 3 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（7) 最少材料製成但又不影響其強度。 該滾子組合1 〇之滾子1 2係爲一體成型之單件，係 以耐衝擊聚合材料所製成。在較佳實施例中，該滾子1 2 係經壓鑄製程以耐衝擊之尼龍材料所製成。該滾子1 2包 含一外部6 6係用以卡合該L形滑軌2 4，以及一肩部 6 8係設置於桿1 4空轉段1 3之槽44之中。該外部 6 6之外表面7 0以剖面視之則係實質爲環形。如圖4所 示’中部7 2可置於該外部6 6與肩部6 8之間。遠端及 近端坡狀表面7 4 ’ 7 6則延伸至該中部7 2之內側表面 7 8而至該肩部6 8之內側表面8 0。該坡狀表面7 4， 7 6之斜率（表面上升傾斜程度）係實質等於該空轉段 1 3之坡狀58，60之斜率。該槽及肋部之外直徑以及 肩部及中部之內直係選定以使一間_ 8 2定義該滾子1 2 與該空轉段1 3之間。在較佳實施例中，該間隔在該滾子 與該桿之間的相對面間一致實質數値係〇 . 〇 1 〇英吋。 該滾子1 2係裝置於該空轉段1 3，該滾子1 2之近 端部份8 4係滑套於該空轉段1 3之遠端肋部5 0直至該 近端坡狀表面7 6卡合於該空轉段1 3之坡狀6 4。再加 壓於該滾子1 2將可使該近端坡狀表面7 6朝向該空轉段 1 3之坡狀6 4滑動，使該滾子1 2彈性伸張，直至該肩 部6 8之內表面8 0包圍固定於該遠端肋部5 0之外表面 5 4。持續力壓於該滾子1 2，則將使該肩部6 8的內表 面8 0沿該遠端肋部5 0之外表面滑動直至該肩部6 8置 於該槽4 4之中。在此刻該滾子1 2回復其原有之形狀， 本紙張尺度適用中國國家標準（CNSM4規格（210 X 297公釐) 'IU- ------------ 裝 ----- - 訂--.1 ----—-'^ (請先閱讀背面之江意事項再填寫本頁) 87 436573 五、發明說明（8 ) 且該滾子1 2之肩部6 8將徑向延伸至該桿1 4之空轉段 1 3之槽4 4，藉此固持該滾子1 2於桿1 4。於較佳實 施例中，在該滾子1 2裝置於該桿1 4之前，係塗佈潤滑 油層86於該坡狀表面74176及該肩部68的內表面 80，78，以及該中部72。 本發明之滾子組合1 0係不包括任何會腐蝕或降低操 作及其機械特性之金屬元件。甚者，可利用聚合材料製造 該滾子1 2及該桿1 4，可大幅降低移動該車庫門1 8時 的噪音。由於無需分別以固定件鎖固該滾子1 2於該桿 1 4，滾子組合1 〇之製造成本亦較傳統之滾子支撐單元 更具競爭力d 上述及所示之實施例之各種修改及替代均不脫本發明 之精神及範疇。而本發明如上所描述者僅係爲說明之用而 非做爲限制。 ---------t . ^--------訂 i-------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本纸張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 436573 A7 __B7____ V. Description of the Invention (1) Background of the Invention The present invention relates to a type of upward sliding door that rolls upwards or moves upwards, and particularly relates to a type of upward sliding garage door Roller combination. The upward sliding door is usually used as a garage door, and the usual structure is hinged with many door panels. These lift-up doors are usually supported by a pair of L-shaped slides, so that the door can be moved upwards from a vertically closed position to a horizontally opened position. In order to achieve the opening and closing action, the garage door uses a plurality of roller supporting elements to abut the device at the side edge of the door. The rollers of each roller supporting unit are rolling cards combined and supported in the stationary L-shaped slide rail. Generally speaking, this roller support unit also contains a pair of hinge single pieces | each hinge single piece is respectively fixed to the area adjacent to the door and arranged in the opposite direction. The pair of hinges supports a metal hinge tube in a single piece, and the rod portion of the roller can be accommodated in the hinge tube. The rollers of various traditional roller support units are composed of metal and metal-to-metal contacts between the roller and the L-shaped slide rail. When the garage door is pulled from one position to another, it will produce great noise. . In addition, these roller support units are usually made of ordinary steel to reduce material costs. Although 'the roller support units are usually installed on the inside of the lift-up garage door', the exposed components contained therein will cause rust or other material corrosion problems. Corrosion of the material will increase the noise of the door and cause the roller support unit to fail. In order to improve the above-mentioned roller support unit, there are some conventional roller support units in which a roller made of plastic is mounted and a rolling device is mounted on a metal roller. If it is, the noise caused by the roller support unit is lower than the gold paper size of the device. Applicable to China National Standard (CNS) A4 (210 X 297 public love) --III--11 '* -—111 --- { Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 436573 A7 ___B7___ V. Invention Description (2) It is a roller support unit for rollers. In addition, plastic rollers do not cause material corrosion. However, these roller support units are more expensive to manufacture than roller units made of all-metal, because they are not competitive in terms of cost. Summary of the Invention To be clear, the preferred application form of the present invention is a garage door roller combination, which includes a rod and a roller made of a polymer material. The rod has a shaft section and an idle section. The shaft section is installed at a distance from the side end edge of the door through which the garage door is idling section. The shoulder of a roller extends radially inwardly from the inner surface of the roller and is positioned in a circumferential groove of the idle section. An outer area of the roller fits into an L-shaped slide rail which is guided to the side. The rod and the roller system are each a single piece, and the rod system is preferably made of glass fiber made of strong nylon 'and the roller system is made of impact-resistant nylon. The idling portion includes a distal rib portion and a distal sloped surface, which are separated from the proximal rib portion and a proximal sloped surface by the groove. The distal and proximal sloped surfaces extend from the outer surfaces of the distal and proximal ribs and relatively reach the outer surface of the groove. The roller includes a distal and a proximal sloping surface which are oppositely disposed on the distal and the proximal sloping surfaces of the idle section, respectively. The idling section further has a sloped surface and extends from the outer surface of the distal rib to the distal surface of the idling section. When the roller is mounted on the rod, the distal end surface of the roller slides on the slope of the idle section and elastically pulls the roller. When the shoulder of the roller is placed in the groove, the roller will return to its original size, < Please read the precautions on the back before filling this page) ------. The paper size of the final paper is in accordance with the Chinese National Standard (CNS) A4 (2) 0 297 mm -5- 436573 A7 ____B7 __—- 5. Description of the invention (3) It is located in the groove to hold the roller on the rod. The B of the present invention is to provide a new and improved roller combination which can be used in a lift-up door. Another object of the present invention is to provide a new and improved roller assembly which does not cause corrosion and has low noise during operation. Another object of the present invention is to provide a new and improved roller assembly which can be manufactured at a lower cost. Other objects and advantages of the present invention will be understood with reference to the subsequent drawings and descriptions.a The drawings illustrate the various objects and advantages of the present invention. Those skilled in the art can be better understood by cooperating with the following drawings and descriptions, among which: FIG. 1 is a plan view of a garage door drawn in dotted lines, which has a roller assembly according to the present invention. FIG. 2 is an enlarged perspective view of the roller assembly shown in FIG. 1. FIG. 3 is a sectional view of the roller assembly shown in FIG. 2. FIG. 4 is an enlarged sectional view of a region 4 shown in FIG. 3. Figure 5 shows the rollers in the roller combination shown in Figure 2 with dashed lines. Comparison table of main components 1 〇 Roller combination 1 2 Roller (谙 Please read the back first; I will fill in this page before filling in this page) Installation ---- nn Order -------- The Intellectual Property Bureau of the Ministry of Economic Affairs Printed by employee consumer cooperatives The paper size applies the national standard (CNS) A4 specification (210 X 297 mm)-Printed by the employee consumer cooperatives of the Intellectual Property Bureau of the Ministry of Economy 436573 A7 _____B7_ V. Description of invention (4) 13 14 Rod 16 Inner surface 18 Garage door 2 0 Side edge 2 2 Fixed distance 2 4 L-shaped slide rail 2 6, 2 6 One door plate 28 Hinge piece 30 Hinge sleeve 3 2 Shaft section 3 4 Outer diameter 3 8 Transition section 4 2 Escape material recess 4 4 Slot 4 6 Distal surface 4 8 Proximal surface 5 0 Distal rib 5 2 Proximal rib 5 4 1 5 6 * 6 2 Outer surface 6 6 Outer 7 2 Middle 7 4 Distal Slope-like surface 76 Slope-like surface near the end (please read the precautions on the back before filling in this page). (CNS) A4 specification (210 X 297 mm) 436573 A7 B7 V. Description of the invention (5) 8 0 Inner surface 8 2 Space 8 6 Detailed description of the preferred embodiment of the lubricant layer The same components in the formula will be marked with the same reference numerals, and the garage door roller combination of the present invention is marked with the reference numeral 10. Each roller combination 丄 0 includes a roller 1 2 series rotating device on the idle section 13 of the rod 14. A number of the roller assembly 10 are mounted on the inner surface 16 along the side edge 20 of the inner surface 16 of the garage door 18, and the idle section 13 extends beyond the side of the door 18 End edge 20, and each roller 12 is placed at a fixed distance from the side end edge 20 of the door 18. Each roller 12 on the garage door 18 is a rolling card combined and supported in a pair of stationary L-shaped slide rails 24. The L-shaped slide rails 24 allow the door 18 to move upward from the vertically closed position to Open position horizontally. Traditionally, the 'garage door 1' series 8 includes a plurality of door panels 2 6, 2 6 z hinged together. A pair of hinge single pieces 2 8 series are used to connect two adjacent door panels 26 '26 > and jointly support a metal hinge pipe body 30 The tube body can accommodate the rods 14 of the roller combination 10 therein. Generally speaking, the rod 1 4 can be used as a pivot pin to connect the hinge single pieces 2 8 and the door panels 2 6, 2 6 ~ The rod 14 is a one-piece molded monomer made of high-strength polymer material. In the embodiment, the rod 14 is made of strong nylon glass fiber by a die casting method. The rod 1 4 includes a cylindrical shaft section 3 2 and an idle section. The paper size is applicable to China National Standard (CNS) A4 (210 * 297 mm) (please read the precautions on the back of the trace before filling this page). -------- Order --------- Recorded by the Consumers 'Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs, printed 436573 A7 ___ B7' ------ ---- V. Description of Invention (6 ) 1 3. Because the roller combination 10 series can be used interchangeably with traditional roller support units, the outer diameter 3 4 and length 36 of the shaft section 32 are selected so that they can be used with the traditional hinged tube body 30. In the embodiment shown in Figs. 2 and 3, a 'transition section 38 is placed between the shaft section 32 and the idle section 13. The outer diameter of the transition section 38 is larger than the outer diameter 34 of the shaft section 32 to increase the strength of the rod 14. The combined length (3 6 + 4 0) of the shaft section 32 and the transition section 3 8 is selected so that the idling section 13 can be appropriately placed on the L-shaped slide rail 2 4 of a conventional garage door. in. As shown in FIG. 2 ', each of the shaft section 32 and the transition section 38 includes a plurality of escape dents 42. These escaped depressions 4 2 are used to reduce the use of polymeric materials' so that the rod 1 4 can be made of minimal materials without affecting its strength. 0 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Segment 1 3 has a groove 4 4 having a substantially annular circumference, and is disposed between the distal surface 46 and the proximal surface 48 of the idling segment 13. Preferably, the groove 4 4 is disposed at an equal distance from the distal surface 46 and the proximal surface 48. The groove 4 4 is defined as a ring-shaped is end and the proximal ribs 50, 52, which have substantially equal diameters. The proximal end surface 58 of the distal rib portion 50 and the distal end surface 60 of the proximal rib portion 5 2 each form an inclined surface extending from an outer surface 54'56 of an opposite rib portion to the groove 44. Outer surface 6 2. The distal surface 6 4 of the distal rib portion 50 forms a slope shape, which extends longitudinally and laterally from the outer surface 5 4 of the distal rib portion 50 to the distal surface 4 6 of the idling segment 13. . The idling section 13 can have one or more evasion recesses at the same time. These evasion recesses are used to reduce the use of polymeric materials, so that the rod 14 can be used in accordance with China National Standard (CNS) A4 specifications ( 210 X 297 public reply) -9 ^ 4 3 657 3 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (7) The minimum material is made without affecting its strength. The roller combination 10 of the roller assembly 12 is a one-piece, one-piece, made of impact-resistant polymer material. In a preferred embodiment, the roller 12 is made of an impact-resistant nylon material through a die-casting process. The roller 12 includes an outer 6 6 series for engaging the L-shaped slide rail 2 4, and a shoulder 6 8 is provided in the groove 44 of the rod 14 idle section 13. The outer surface 70 of the outer portion 66 is substantially annular in cross section. As shown in FIG. 4, 'the middle portion 72 can be placed between the outer portion 66 and the shoulder portion 68. The distal and proximal sloped surfaces 7 4 '7 6 extend to the inner surface 7 8 of the middle portion 72 and to the inner surface 80 of the shoulder portion 6 8. The slopes of the slope-like surfaces 7 4 and 7 6 (the degree of surface ascending slope) are substantially equal to the slopes of the slopes 58 and 60 of the idling section 13. The outer diameters of the grooves and ribs and the inner straights of the shoulders and the middle are selected so that a space _ 8 2 defines between the roller 1 2 and the idle section 13. In a preferred embodiment, the interval is substantially 0.10 inches between opposing faces between the roller and the rod. The roller 12 is mounted on the idle section 1 3, and the proximal end portion 8 of the roller 12 is slipped on the distal rib portion 50 of the idle section 13 until the proximal sloped surface 7 6 engages the slope 6 4 of the idle section 1 3. Re-pressurizing the roller 1 2 will cause the proximal sloped surface 7 6 to slide toward the sloped 6 4 of the idling section 13 to elastically stretch the roller 12 to within the shoulder 6 8 The surface 80 surrounds the outer surface 54 fixed to the distal rib 50. Continuous pressure on the roller 12 will cause the inner surface 80 of the shoulder portion 6 8 to slide along the outer surface of the distal rib portion 50 until the shoulder portion 6 8 is placed in the groove 44. At this moment, the roller 12 reverts to its original shape. The paper size is in accordance with the Chinese national standard (CNSM4 specification (210 X 297 mm) 'IU- ------------ installed --- --Order-. 1 ------- '^ (Please read the Jiang Yi matters on the back before filling this page) 87 436573 V. Description of the invention (8) and the roller 1 2 shoulder 6 8 Extend radially to the slot 4 4 of the idle section 13 of the rod 14, thereby holding the roller 12 to the rod 14. In a preferred embodiment, the roller 12 is mounted on the rod 1 Before 4, the lubricating oil layer 86 was applied to the sloped surface 74176 and the inner surfaces 80, 78 of the shoulder 68, and the middle 72. The roller combination 10 of the present invention does not include any corrosion or reduction operation and Metal elements with its mechanical characteristics. In addition, the roller 12 and the rod 14 can be made of polymer materials, which can greatly reduce the noise when moving the garage door 18. Because there is no need to separately lock the roller with a fixing member 1 2 The manufacturing cost of the roller assembly 10 is also more competitive than the traditional roller support unit. The various modifications and substitutions of the above and shown embodiments do not depart from the spirit of the present invention and The present invention as described above is for illustrative purposes only and not for limitation. --------- t. ^ -------- Order i ------- (Please read the notes on the back before filling out this page) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm)