1230228 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種碟剎卡钳，特別是指一種可以辅 助活塞退移的碟剎卡鉗。 5 【先前技術】 參閱圖1，一般碟剎卡鉗1主要包含有一本體11、二 活塞12及二油封13。該本體11具有環繞一軸線乂且界 定出一貫孔111的内表面112,及二形成在該内表面112 的溝槽113。該等活塞12是可相對移動地容置在該本體 10 11的貫孔111内，並分別具有一外表面121。該等油封13 是分別環固在該活塞12外表面121，且容置在談本體11 的溝槽113内，能阻隔油源。 藉此，當該等活塞12分別受油壓作用，而沿箭頭方 向移動時，該油封13會與該溝槽113的槽壁磨擦並產生 15 變形，當油壓不再作用時，該等油封13會釋放變形能量 ，分別帶動該活塞12回彈，使該等活塞12退移並復歸原 位。惟，上述活塞12雖然可以進移或退移，進而完成剎 車動作，卻在實際使用時仍存有以下缺失而亟待解決： 由於該等油封13只能藉由與該等溝槽113槽壁的磨擦 20 力產生變形，因此，在該等溝槽113空間明顯大於該等油 封13的情形下，有空間可供該等油封13的變形量伸展， 也就是說，作用於該等油封13的磨擦力並不會增加，該等 油封13無法聚積有效的變形能量，不但容易隨該等活塞 12位移產生滑動，且不能有效的帶動該等活塞12回彈。 1230228 【發明内容】 因此，本發明之目的，即在提供一種可以增加磨擦力 ，且能聚積有效變形能量的碟刹卡钳。 於是，本發明的碟剎卡鉗包含：一本體、二活塞、二 5 油封及二退位部。該本體具有環繞一軸線且界定出一貫孔 的内表面，及二形成在該内表面的溝槽。該等活塞是可相 對移動地容置在該本體的貫孔内，並分別具有與該本體内 表面接觸的一外表面。該等油封是分別環固在該活塞外表 面，且容置在該本體溝槽内。該等退位部分別具有一環繞 10 該軸線且形成在該本體溝槽内的斜面，該斜面具有一鄰近 該軸線且相鄰該活塞進移方向的一端，及遠離該軸線且相 鄰該活塞復歸方向的另一端，使該油封在該活塞進移時受 阻於該斜面，並聚積變形能量，及於釋放變形能量時，帶 動該活塞回彈。 15 本發明的功效是能使該等油封更有效的帶動該等活塞 回彈。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 20 楚的明白。 參閱圖2、圖3,本發明的碟剎卡鉗的較佳實施例是 包含：一本體2、二活塞3、二油封4及二退位部5。由於 該等活塞3、該等油封4及該等退位部5在構造上，及於 該本體2内的動作完全相同，所以，圖2、圖3只表示一 1230228 半的本體2’及其中—活塞3、—油封4及_退位部％ 該本體2具有環繞一軸線χ且界定出一貫孔21的内 表面22，及二形成在該内表面22的溝槽23。 該活塞3是可相對移動地容置在該本體2的貫孔21 内，並分別具有一外表面31。 4油封4是環固在該活塞3外表面31，且容置在嗲 本體2溝槽23内。 ~ 10 該退位部5具有一環繞該軸線χ且形成在該本體2溝 槽23内的斜面51。該斜面51具有一鄰近該軸線χ且相 鄰該活塞3進移方向的_端511，及遠離該㈣χ且相鄰 該活塞3復歸方向的另一端512。 15 藉此’當該活塞3受油壓作用，而沿箭頭方向移動時 ’該油封4會與該斜面51磨擦並產生變形此時，該油 封4變形量會受阻於該斜面51而無法伸展，產生嚴重的 變形並聚積變形能量’也就是說，作用於該油封4的磨擦 力會增加，所以，該油封4不易產生滑動的現象，且當油 麼科作料，祕封4會釋放變形能量，並帶動該活塞 3回弹’使該活塞3復歸原位，參附件一的實驗數據，可 /月楚的看出’ 4/¾塞3回彈時的回位量平均值約在〇·678 左右’顯然’該油封4確實可以更有效的帶動該活塞3回 彈。 據上所述可知，本發明之碟刹卡鉗具有下列優點及功 效： 的設計，就可以聚積該 本發明只須藉由該等斜面51 20 1230228 等油封4的變形能量，提供該等活塞3復歸時的能量，就 可以更有效的帶動該活塞3回彈，不但機構簡單、組裝容 易，且成本低，使本發明更具實用性及經濟效益。 惟以上所述者，僅為本發明之較佳實施例而已，當不 5 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明書内容所作之簡單的等效變化與修飾，皆 應仍屬本發明專利涵蓋之範圍内。 1230228 【圓式簡單說明】 圖1是一剖視圖，說明一般的碟剎卡鉗； 圖2是一立體分解圖，說明本發明一碟剎卡鉗的較佳 實施例；及 5 圖3是一部份剖視圖，說明該較佳實施例的組合情形 〇 附件一：本發明的實驗數據。 10 9 1230228 【圖式之主要元件代表符號簡單說明】 2·*..............本體 4................油封 21..............貫孔 5..............退位部 22.........内表面 51............斜面 511 ............一端 512 ............另一端 23..........…溝槽 3……………♦活塞 31..............外表面 ^ 101230228 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a disc brake caliper, and more particularly to a disc brake caliper that can assist the piston in retreating. 5 [Prior art] Referring to FIG. 1, a general disc brake caliper 1 mainly includes a body 11, two pistons 12 and two oil seals 13. The main body 11 has an inner surface 112 surrounding an axis 乂 and defining a through hole 111, and two grooves 113 formed in the inner surface 112. The pistons 12 are relatively movably received in the through holes 111 of the body 10 11 and each have an outer surface 121. The oil seals 13 are respectively fixed on the outer surface 121 of the piston 12 and are accommodated in the groove 113 of the main body 11 to block the oil source. As a result, when the pistons 12 are respectively affected by oil pressure and move in the direction of the arrow, the oil seal 13 will rub against the groove wall of the groove 113 and deform 15. When the oil pressure is no longer acting, the oil seals 13 will release deformation energy, which will drive the pistons 12 to rebound, causing the pistons 12 to move back and return to their original positions. However, although the above-mentioned piston 12 can be moved forward or backward to complete the braking action, it still needs to be solved urgently in actual use: Because the oil seals 13 can only be connected with the groove walls of the grooves 113 The friction 20 force deforms. Therefore, in the case where the space of the grooves 113 is significantly larger than the oil seals 13, there is room for the deformation of the oil seals 13 to stretch, that is, the friction acting on the oil seals 13 The force will not increase, the oil seals 13 cannot accumulate effective deformation energy, not only easily slide with the displacement of the pistons 12, but also cannot effectively drive the pistons 12 to rebound. 1230228 [Summary of the invention] Therefore, an object of the present invention is to provide a disc brake caliper which can increase frictional force and can accumulate effective deformation energy. Therefore, the disc brake caliper of the present invention includes: a body, two pistons, two 5 oil seals, and two dislodging portions. The body has an inner surface surrounding an axis and defining a through hole, and two grooves formed on the inner surface. The pistons are relatively movably accommodated in the through holes of the body, and each has an outer surface in contact with the inner surface of the body. The oil seals are respectively fixed on the outer surface of the piston and are accommodated in the body groove. The dislocations respectively have an inclined surface that surrounds the axis 10 and is formed in the body groove. The oblique mask has an end adjacent to the axis and adjacent to the piston moving direction, and away from the axis and adjacent to the piston to return. At the other end of the direction, the oil seal is hindered by the inclined surface when the piston moves forward, and the deformation energy is accumulated, and when the deformation energy is released, the piston is caused to rebound. 15 The effect of the present invention is to make the oil seals more effectively drive the pistons to rebound. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Referring to FIG. 2 and FIG. 3, the preferred embodiment of the disc brake caliper of the present invention includes: a body 2, two pistons 3, two oil seals 4, and two disengaging portions 5. Because the pistons 3, the oil seals 4, and the dislocations 5 are identical in structure and action in the body 2, therefore, Figures 2 and 3 only show a 1230228 half body 2 'and its- Piston 3,-oil seal 4 and _ dislodgement portion The body 2 has an inner surface 22 surrounding an axis χ and defining a through hole 21, and two grooves 23 formed in the inner surface 22. The piston 3 is movably received in the through hole 21 of the body 2 and has an outer surface 31 respectively. The 4 oil seal 4 is fixed on the outer surface 31 of the piston 3 and is accommodated in the groove 23 of the 23 body 2. ~ 10 The dislodged portion 5 has an inclined surface 51 formed around the axis χ and formed in the groove 23 of the main body 2. The inclined surface 51 has an _-end 511 adjacent to the axis χ and adjacent to the moving direction of the piston 3, and an other end 512 far from the χ and adjacent to the return direction of the piston 3. 15 In this way, when the piston 3 is moved by the oil pressure and moves in the direction of the arrow, the oil seal 4 will rub against the inclined surface 51 and deform. At this time, the deformation of the oil seal 4 will be blocked by the inclined surface 51 and cannot be extended. Severe deformation and accumulation of deformation energy 'That is to say, the friction force acting on the oil seal 4 will increase, so the oil seal 4 is unlikely to slip, and when the oil seal is used, the secret seal 4 will release deformation energy, And drive the piston 3 to rebound. 'Return the piston 3 to its original position. Refer to the experimental data in Annex 1. It can be seen from the month / month that the average value of the return amount when the 4 / ¾ plug 3 rebounds is about 0. 678. Left and right 'obviously' the oil seal 4 can indeed drive the piston 3 to rebound more effectively. According to the above, it can be known that the disc brake caliper of the present invention has the following advantages and effects: The design can accumulate the invention. The piston 3 needs to be restored only by the deformation energy of the oil seals 4 such as the inclined surfaces 51 20 1230228. The energy at the time can more effectively drive the piston 3 to rebound, not only the mechanism is simple, the assembly is easy, and the cost is low, which makes the invention more practical and economical. However, the above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention can not be limited by this, that is, the simple equivalent changes made according to the scope of the patent application and the content of the invention specification of the present invention. Modifications should still fall within the scope of the invention patent. 1230228 [Circular type brief description] FIG. 1 is a sectional view illustrating a general disc brake caliper; FIG. 2 is an exploded perspective view illustrating a preferred embodiment of a disc brake caliper according to the present invention; and FIG. 3 is a partial sectional view Describe the combination of the preferred embodiment. Appendix 1: Experimental data of the present invention. 10 9 1230228 [Simplified description of the main components of the diagram] 2 · * .............. The body 4 ...... 21 ............. Through hole 5 .............. Recession 22 ......... Inner surface 51 ... ......... incline 511 ............ one end 512 ............ the other end 23 ............. … Groove 3 …………… ♦ Piston 31 .............. outer surface ^ 10