TWI421193B - Drum brake mechanism - Google Patents
Drum brake mechanism Download PDFInfo
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- TWI421193B TWI421193B TW100120496A TW100120496A TWI421193B TW I421193 B TWI421193 B TW I421193B TW 100120496 A TW100120496 A TW 100120496A TW 100120496 A TW100120496 A TW 100120496A TW I421193 B TWI421193 B TW I421193B
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Description
本發明是有關於一種鼓式煞車機構，特別是有關於一種可增進煞車制動效果之鼓式煞車機構。The present invention relates to a drum brake mechanism, and more particularly to a drum brake mechanism that can improve the brake effect of a brake.
請參閱第1圖及第2圖，一種習知之鼓式煞車機構1主要包括有一輪鼓10、一固定盤20、一煞車臂30及一煞車導線40。Referring to Figures 1 and 2, a conventional drum brake mechanism 1 mainly includes a drum 10, a fixed plate 20, a brake arm 30 and a brake wire 40.
輪鼓10可以是連接於一車輪之一輪框(未顯示)或為輪框之一部份。The drum 10 may be attached to one of the wheel frames (not shown) or part of the wheel frame.
固定盤20是套設於輪鼓10之中，並且固定盤20具有一盤體21、一煞車凸輪22、一固定銷23、一第一煞車蹄片24、一第二煞車蹄片25及兩拉伸彈簧26。如第2圖所示，盤體21具有一直孔21a。煞車凸輪22具有一抵接頭部22a及一直柱體22b。直柱體22b是連接於抵接頭部22a，並且直柱體22b是以轉動之方式穿設於盤體21之直孔21a之中。固定銷23是連接於盤體21。第一煞車蹄片24是相對於第二煞車蹄片25。在此，如第1圖所示，第一煞車蹄片24之兩端是分別抵接於煞車凸輪22之抵接頭部22a及固定銷23，以及第二煞車蹄片25之兩端亦是分別抵接於煞車凸輪22之抵接頭部22a及固定銷23。如上所述，第一煞車蹄片24及第二煞車蹄片25可以固定銷23為旋轉支點來進行旋轉，因而可根據操作需要來抵接摩擦輪鼓10，進而可達成對輪鼓10(或車輪)的煞車制動效果。此外，兩拉伸彈簧26是連接於第一煞車蹄片24與第二煞車蹄片25之間，其可使得第一煞車蹄片24及第二煞車蹄片25之兩端分別保持抵接於煞車凸輪22之抵接頭部22a及固定銷23。The fixed plate 20 is sleeved in the drum 10, and the fixed plate 20 has a disk body 21, a brake cam 22, a fixing pin 23, a first brake shoe 24, a second brake shoe 25 and two The tension spring 26 is stretched. As shown in Fig. 2, the disk body 21 has a straight hole 21a. The brake cam 22 has an abutting portion 22a and a substantially cylindrical portion 22b. The straight cylinder 22b is connected to the abutting portion 22a, and the straight cylinder 22b is rotatably inserted into the straight hole 21a of the disk body 21. The fixing pin 23 is connected to the disk body 21. The first brake shoe 24 is relative to the second brake shoe 25. Here, as shown in FIG. 1, the two ends of the first brake shoe 24 are respectively abutted against the abutting portion 22a of the brake cam 22 and the fixing pin 23, and the two ends of the second brake shoe 25 are also respectively It abuts against the abutting portion 22a of the brake cam 22 and the fixing pin 23. As described above, the first brake shoe 24 and the second brake shoe 25 can be rotated by the fixing pin 23 as a pivot point, so that the friction drum 10 can be abutted according to the operation, and the drum 10 can be achieved (or Wheel brake effect. In addition, the two tension springs 26 are connected between the first brake shoe 24 and the second brake shoe 25, so that the two ends of the first brake shoe 24 and the second brake shoe 25 are respectively kept in contact with each other. The brake cam 22 abuts against the joint portion 22a and the fixing pin 23.
煞車臂30是連接於煞車凸輪22之直柱體22b。The brake arm 30 is a straight cylinder 22b that is coupled to the brake cam 22.
煞車導線40是連接於煞車臂30。The brake wire 40 is coupled to the brake arm 30.
當煞車導線40拉動煞車臂30而驅使煞車凸輪22之直柱體22b作動時，直柱體22b會旋轉一角度。此時，煞車凸輪22之抵接頭部22a亦會隨之旋轉該角度而以轉動之方式抵推第一煞車蹄片24及第二煞車蹄片25，因而迫使第一煞車蹄片24及第二煞車蹄片25以固定銷23為支點轉動而撐開以摩擦輪鼓10，進而可達成對輪鼓10(或車輪)的煞車制動效果。When the brake wire 40 pulls the brake arm 30 to urge the straight cylinder 22b of the brake cam 22 to actuate, the straight cylinder 22b is rotated by an angle. At this time, the abutting portion 22a of the brake cam 22 also rotates the angle to push the first brake shoe 24 and the second brake shoe 25 in a rotating manner, thereby forcing the first brake shoe 24 and the second. The brake shoe 25 is rotated by the fixing pin 23 as a fulcrum to expand the friction drum 10, and the braking effect on the drum 10 (or the wheel) can be achieved.
然而，當第一煞車蹄片24及第二煞車蹄片25被煞車凸輪22之抵接頭部22a抵推撐開時，第一煞車蹄片24會比第二煞車蹄片25優先完整接觸到輪鼓10。在此，由於整個煞車凸輪22只能在固定盤20(或盤體21)上進行旋轉運動，而無法進行位移運動，故第二煞車蹄片25便無法完整與輪鼓10進行接觸摩擦。換句話說，第二煞車蹄片25與輪鼓10之間的摩擦面積會不足，因而會使得煞車制動效果不佳。However, when the first brake shoe 24 and the second brake shoe 25 are pushed apart by the abutting portion 22a of the brake cam 22, the first brake shoe 24 will preferentially contact the wheel more than the second brake shoe 25 Drum 10. Here, since the entire brake cam 22 can only perform a rotational motion on the fixed disk 20 (or the disk body 21) and cannot perform the displacement movement, the second brake shoe 25 cannot completely contact the drum drum 10 for contact friction. In other words, the frictional area between the second brake shoe 25 and the drum 10 may be insufficient, so that the braking effect of the brake is poor.
有鑑於此，本發明之目的是要提供一種鼓式煞車機構，其可讓第一煞車蹄片及第二煞車蹄片皆完整摩擦輪鼓，以提升整體煞車制動效果。In view of the above, an object of the present invention is to provide a drum brake mechanism that allows the first brake shoe and the second brake shoe to completely rub the drum to improve the overall braking effect.
本發明基本上採用如下所詳述之特徵以為了要解決上述之問題。The present invention basically employs the features detailed below in order to solve the above problems.
本發明之一實施例提供一種鼓式煞車機構，包括：一輪鼓；一固定盤，套設於該輪鼓之中，並且具有一盤體、一煞車凸輪、一固定銷、一第一煞車蹄片及一第二煞車蹄片，其中，該盤體具有一錐形孔，該煞車凸輪具有一抵接頭部及一直柱體，該直柱體係連接於該抵接頭部，並且係以轉動及偏擺之方式穿設於該盤體之該錐形孔之中，該固定銷係連接於該盤體，該第一煞車蹄片係相對於該第二煞車蹄片，該第一煞車蹄片之兩端係分別抵接於該煞車凸輪之該抵接頭部及該固定銷，以及該第二煞車蹄片之兩端係分別抵接於該煞車凸輪之該抵接頭部及該固定銷；一煞車臂，連接於該煞車凸輪之該直柱體；以及一煞車導線，連接於該煞車臂，其中，當該煞車導線拉動該煞車臂而驅使該煞車凸輪之該直柱體作動時，該煞車凸輪之該抵接頭部係以轉動及偏擺之方式抵推該第一煞車蹄片及該第二煞車蹄片，以迫使該第一煞車蹄片及該第二煞車蹄片以該固定銷為支點轉動而抵緊摩擦該輪鼓。An embodiment of the present invention provides a drum brake mechanism, comprising: a drum; a fixed disc, sleeved in the drum, and having a disc body, a brake cam, a fixing pin, and a first shovel And a second brake shoe, wherein the disk body has a tapered hole, the brake cam has an abutting portion and a straight cylinder, the straight column system is connected to the abutting portion, and is rotated and biased The pendulum is disposed in the tapered hole of the disc body, the fixing pin is coupled to the disc body, and the first brake shoe is opposite to the second brake shoe, the first brake shoe is The two ends are respectively abutted against the abutting portion of the brake cam and the fixing pin, and the two ends of the second brake shoe are respectively abutted against the abutting portion of the brake cam and the fixing pin; An arm coupled to the straight cylinder of the brake cam; and a brake wire coupled to the brake arm, wherein the brake cam is actuated when the brake wire pulls the brake arm to drive the vertical cylinder of the brake cam The abutting portion is rotated and yawed Push the first brake shoe and said second brake shoes to urge the first and second brake shoes to the brake shoe fixing pin as a fulcrum and a tight friction against the drum.
根據上述實施例，該固定盤更具有一油封，以及該油封係設置於該錐形孔之一內壁與該煞車凸輪之該直柱體之間。According to the above embodiment, the fixed disk further has an oil seal, and the oil seal is disposed between the inner wall of one of the tapered holes and the straight cylinder of the brake cam.
本發明之另一實施例提供一種鼓式煞車機構，包括：一輪鼓；一固定盤，套設於該輪鼓之中，並且具有一盤體、一煞車凸輪、一固定銷、一第一煞車蹄片及一第二煞車蹄片，其中，該盤體具有一直孔，該煞車凸輪具有一抵接頭部及一錐形柱體，該錐形柱體係連接於該抵接頭部，並且係以轉動及偏擺之方式穿設於該盤體之該直孔之中，該固定銷係連接於該盤體，該第一煞車蹄片係相對於該第二煞車蹄片，該第一煞車蹄片之兩端係分別抵接於該煞車凸輪之該抵接頭部及該固定銷，以及該第二煞車蹄片之兩端係分別抵接於該煞車凸輪之該抵接頭部及該固定銷；一煞車臂，連接於該煞車凸輪之該錐形柱體；以及一煞車導線，連接於該煞車臂，其中，當該煞車導線拉動該煞車臂而驅使該煞車凸輪之該錐形柱體作動時，該煞車凸輪之該抵接頭部係以轉動及偏擺之方式抵推該第一煞車蹄片及該第二煞車蹄片，以迫使該第一煞車蹄片及該第二煞車蹄片以該固定銷為支點轉動而抵緊摩擦該輪鼓。Another embodiment of the present invention provides a drum brake mechanism, comprising: a drum; a fixed disc, sleeved in the drum, and having a disc body, a brake cam, a fixed pin, and a first brake a shoe and a second brake shoe, wherein the disk has a straight hole, the brake cam has an abutting portion and a tapered cylinder, the tapered column system is coupled to the abutting portion and is rotated And the yaw is disposed in the straight hole of the disk body, the fixing pin is connected to the disk body, and the first brake shoe piece is opposite to the second brake shoe piece, the first brake shoe piece The two ends are respectively abutted against the abutting portion of the brake cam and the fixing pin, and the two ends of the second brake shoe are respectively abutted against the abutting portion of the brake cam and the fixing pin; a brake arm coupled to the tapered cylinder of the brake cam; and a brake wire coupled to the brake arm, wherein when the brake wire pulls the brake arm to urge the tapered cylinder of the brake cam to act The abutting portion of the brake cam is rotated and biased Resisting the first embodiment brake shoe and said second brake shoes to urge the first and second brake shoes to the brake shoe fixing pin as a fulcrum and a tight friction against the drum.
根據上述實施例，該固定盤更具有一油封，以及該油封係設置於該直孔之一內壁與該煞車凸輪之該錐形柱體之間。According to the above embodiment, the fixed disk further has an oil seal, and the oil seal is disposed between the inner wall of one of the straight holes and the tapered cylinder of the brake cam.
又在本發明之中，該固定盤更具有至少一拉伸彈簧，以及該拉伸彈簧係連接於該第一煞車蹄片與該第二煞車蹄片之間。In the present invention, the fixed disk further has at least one tension spring, and the tension spring is coupled between the first brake shoe and the second brake shoe.
為使本發明之上述目的、特徵和優點能更明顯易懂，下文特舉較佳實施例並配合所附圖式做詳細說明。The above described objects, features and advantages of the present invention will become more apparent from the description of the appended claims.
茲配合圖式說明本發明之較佳實施例。The preferred embodiment of the invention is described in conjunction with the drawings.
第一實施例First embodiment
請參閱第3A圖及第3B圖，本實施例之鼓式煞車機構100主要包括有一輪鼓110、一固定盤120、一煞車臂130及一煞車導線140。Referring to FIGS. 3A and 3B , the drum brake mechanism 100 of the present embodiment mainly includes a drum 110 , a fixed disc 120 , a brake arm 130 , and a brake wire 140 .
輪鼓110可以是連接於一車輪之一輪框(未顯示)或為輪框之一部份。The drum 110 may be attached to one of the wheel frames (not shown) or part of the wheel frame.
如第4圖所示，固定盤120是套設於輪鼓110之中，並且固定盤120具有一盤體121、一煞車凸輪122、一固定銷123、一第一煞車蹄片124、一第二煞車蹄片125、兩拉伸彈簧126及一油封127。As shown in FIG. 4, the fixed disk 120 is sleeved in the drum 110, and the fixed disk 120 has a disk body 121, a brake cam 122, a fixing pin 123, a first brake shoe 124, and a first Two brake shoe pieces 125, two tension springs 126 and an oil seal 127.
在本實施例之中，盤體121具有一錐形孔121a。In the present embodiment, the disk body 121 has a tapered hole 121a.
煞車凸輪122具有一抵接頭部122a及一直柱體122b。直柱體122b是連接於抵接頭部122a，並且直柱體122b是以轉動及偏擺之方式穿設於盤體121之錐形孔121a之中。更具體而言，由於直柱體122b與錐形孔121a之間存在有一間隙G，故穿設於錐形孔121a中之直柱體122b可以進行偏擺移動。此外，油封127乃是設置於錐形孔121a之一內壁121a’與煞車凸輪122之直柱體122b之間，其可在常態下使直柱體122b定位於錐形孔121a之中央處。The brake cam 122 has an abutting portion 122a and a substantially cylindrical portion 122b. The straight cylinder 122b is connected to the abutting portion 122a, and the straight cylinder 122b is inserted into the tapered hole 121a of the disk body 121 in a rotating and yaw manner. More specifically, since there is a gap G between the straight cylinder 122b and the tapered hole 121a, the straight cylinder 122b penetrating in the tapered hole 121a can be yawed. Further, the oil seal 127 is disposed between the inner wall 121a' of one of the tapered holes 121a and the straight cylinder 122b of the brake cam 122, which can normally position the straight cylinder 122b at the center of the tapered hole 121a.
固定銷123是連接於盤體121。The fixing pin 123 is connected to the disk body 121.
第一煞車蹄片124是相對於第二煞車蹄片125。在此，如第3A圖及第3B圖所示，第一煞車蹄片124之兩端是分別抵接於煞車凸輪122之抵接頭部122a及固定銷123，以及第二煞車蹄片125之兩端亦是分別抵接於煞車凸輪122之抵接頭部122a及固定銷123。如上所述，第一煞車蹄片124及第二煞車蹄片125可以固定銷123為旋轉支點來進行旋轉，因而可根據操作需要來抵接摩擦輪鼓110，進而可達成對輪鼓110(或車輪)的煞車制動效果。此外，兩拉伸彈簧126是連接於第一煞車蹄片124與第二煞車蹄片125之間，其可使得第一煞車蹄片124及第二煞車蹄片125之兩端分別保持抵接於煞車凸輪122之抵接頭部122a及固定銷123。The first brake shoe 124 is relative to the second brake shoe 125. Here, as shown in FIGS. 3A and 3B, the two ends of the first brake shoe 124 are respectively abutted against the abutment portion 122a and the fixing pin 123 of the brake cam 122, and the second brake shoe 125. The ends are also abutted against the abutting portion 122a and the fixing pin 123 of the brake cam 122, respectively. As described above, the first brake shoe 124 and the second brake shoe 125 can be rotated by the fixing pin 123 as a rotation fulcrum, so that the friction drum 110 can be abutted according to operational needs, and the drum drum 110 can be achieved. Wheel brake effect. In addition, the two tension springs 126 are connected between the first brake shoe 124 and the second brake shoe 125, so that the two ends of the first brake shoe 124 and the second brake shoe 125 are respectively kept in contact with each other. The brake cam 122 abuts against the joint portion 122a and the fixing pin 123.
煞車臂130是連接於煞車凸輪122之直柱體122b。The brake arm 130 is a straight cylinder 122b that is coupled to the brake cam 122.
煞車導線140是連接於煞車臂130。The brake wire 140 is coupled to the brake arm 130.
當煞車導線140拉動煞車臂130而驅使煞車凸輪122之直柱體122b作動時，直柱體122b會先旋轉一角度。此時，煞車凸輪122之抵接頭部122a亦會隨之旋轉該角度而以轉動之方式抵推第一煞車蹄片124及第二煞車蹄片125，因而迫使第一煞車蹄片124及第二煞車蹄片125以固定銷123為支點轉動而撐開以摩擦輪鼓110。在此，第一煞車蹄片124會比第二煞車蹄片125優先完全抵緊摩擦輪鼓110。接著，由於由於直柱體122b與錐形孔121a之間存在有間隙G，故穿設於錐形孔121a中之直柱體122b會進行偏擺移動，因而可以迫使第二煞車蹄片125更進一步以固定銷123為支點轉動而完全抵緊摩擦輪鼓110，如第3B圖所示。此外，當直柱體122b在錐形孔121a之中進行偏擺移動時，設置於錐形孔121a之內壁121a’與煞車凸輪122之直柱體122b間的油封127會受到壓迫而發生暫時的彈性變形。When the brake wire 140 pulls the brake arm 130 to urge the straight cylinder 122b of the brake cam 122 to actuate, the straight cylinder 122b first rotates by an angle. At this time, the abutting portion 122a of the brake cam 122 also rotates the angle to rotate the first brake shoe 124 and the second brake shoe 125 in a rotating manner, thereby forcing the first brake shoe 124 and the second The brake shoe 125 is pivoted with the fixing pin 123 as a fulcrum to expand to rub the drum 110. Here, the first brake shoe 124 will preferentially abut the friction drum 110 more preferentially than the second brake shoe 125. Then, since there is a gap G between the straight cylinder 122b and the tapered hole 121a, the straight cylinder 122b penetrating in the tapered hole 121a is yawed, thereby forcing the second brake shoe 125 to be more Further, the friction pin drum 110 is completely abutted by the fixing pin 123 as a fulcrum, as shown in FIG. 3B. Further, when the straight cylinder 122b is yawed in the tapered hole 121a, the oil seal 127 provided between the inner wall 121a' of the tapered hole 121a and the straight cylinder 122b of the brake cam 122 is pressed and temporarily Elastic deformation.
第二實施例Second embodiment
在本實施例中，與第一實施例相同之元件均標示以相同之符號。In the present embodiment, the same elements as those of the first embodiment are denoted by the same reference numerals.
仍如第3A圖及第3B圖所示，本實施例之鼓式煞車機構100’亦主要包括有一輪鼓110、一固定盤120’、一煞車臂130及一煞車導線140。As shown in FIGS. 3A and 3B, the drum brake mechanism 100' of the present embodiment also mainly includes a drum 110, a fixed plate 120', a brake arm 130, and a brake wire 140.
如第5圖所示，固定盤120’是套設於輪鼓110之中，並且固定盤120’具有一盤體121’、一煞車凸輪122’、一固定銷123、一第一煞車蹄片124、一第二煞車蹄片125、兩拉伸彈簧126及一油封127。As shown in FIG. 5, the fixed disk 120' is sleeved in the drum 110, and the fixed disk 120' has a disk body 121', a brake cam 122', a fixing pin 123, and a first brake shoe. 124. A second brake shoe 125, two tension springs 126 and an oil seal 127.
在本實施例之中，盤體121’具有一直孔121’a。In the present embodiment, the disk body 121' has a constant hole 121'a.
煞車凸輪122’具有一抵接頭部122a及一錐形柱體122’b。錐形柱體122’b是連接於抵接頭部122a，並且錐形柱體122’b以轉動及偏擺之方式穿設於盤體121’之直孔121’a之中。更具體而言，錐形柱體122’b與直孔121’a之間存在有一間隙G’，故穿設於直孔121’a中之錐形柱體122’b即可進行偏擺移動。此外，油封127乃是設置於直孔121’a之一內壁121’a’與煞車凸輪122’之錐形柱體122’b之間，其可在常態下使錐形柱體122’b定位於直孔121’a之中央處。The brake cam 122' has an abutment portion 122a and a tapered cylinder 122'b. The tapered cylinder 122'b is connected to the abutting portion 122a, and the tapered cylinder 122'b is inserted into the straight hole 121'a of the disk body 121' in a rotating and yaw manner. More specifically, there is a gap G' between the tapered cylinder 122'b and the straight hole 121'a, so that the tapered cylinder 122'b penetrating in the straight hole 121'a can be yawed. . In addition, the oil seal 127 is disposed between the inner wall 121'a' of the straight hole 121'a and the tapered cylinder 122'b of the brake cam 122', which can make the tapered cylinder 122'b under normal conditions. Positioned at the center of the straight hole 121'a.
固定銷123是連接於盤體121’。The fixing pin 123 is connected to the disk body 121'.
煞車臂130是連接於煞車凸輪122’之錐形柱體122’b。The brake arm 130 is a tapered cylinder 122'b that is coupled to the brake cam 122'.
至於本實施例之其他元件構造、特徵或運作方式均與第一實施例相同，故為了使本案之說明書內容能更清晰易懂起見，在此省略其重複之說明。The other components, features, and operation modes of the present embodiment are the same as those of the first embodiment. Therefore, in order to make the contents of the present specification clearer and easier to understand, the repeated description thereof will be omitted herein.
如上所述，當煞車導線140拉動煞車臂130而驅使煞車凸輪122’之錐形柱體122’b作動時，錐形柱體122’b會先旋轉一角度。此時，煞車凸輪122’之抵接頭部122a亦會隨之旋轉該角度而以轉動之方式抵推第一煞車蹄片124及第二煞車蹄片125，因而迫使第一煞車蹄片124及第二煞車蹄片125以固定銷123為支點轉動而撐開以摩擦輪鼓110。在此，第一煞車蹄片124會比第二煞車蹄片125優先完全抵緊摩擦輪鼓110。接著，由於由於錐形柱體122’b與直孔121’a之間存在有間隙G’，故穿設於直孔121’a中之錐形柱體122’b會進行偏擺移動，因而可以迫使第二煞車蹄片125更進一步以固定銷123為支點轉動而完全抵緊摩擦輪鼓110，如第3B圖所示。同樣地，當錐形柱體122’b在直孔121’a之中進行偏擺移動時，設置於直孔121’a之內壁121’a’與煞車凸輪122’之錐形柱體122’b間的油封127會受到壓迫而發生暫時的彈性變形。As described above, when the brake wire 140 pulls the brake arm 130 to urge the tapered cylinder 122'b of the brake cam 122' to actuate, the tapered cylinder 122'b is first rotated by an angle. At this time, the abutting portion 122a of the brake cam 122' will also rotate the angle to rotate the first brake shoe 124 and the second brake shoe 125 in a rotating manner, thereby forcing the first brake shoe 124 and the first The second brake shoe 125 is rotated by the fixing pin 123 as a fulcrum to open the friction drum 110. Here, the first brake shoe 124 will preferentially abut the friction drum 110 more preferentially than the second brake shoe 125. Then, since there is a gap G' between the tapered cylinder 122'b and the straight hole 121'a, the tapered cylinder 122'b penetrating in the straight hole 121'a is yawed, thereby The second brake shoe 125 can be forced to rotate further with the fixing pin 123 as a fulcrum to completely abut against the friction drum 110, as shown in Fig. 3B. Similarly, when the tapered cylinder 122'b is yawed in the straight hole 121'a, the inner wall 121'a' of the straight hole 121'a and the tapered cylinder 122 of the brake cam 122' are disposed. The oil seal 127 between 'b will be subjected to compression and temporarily elastically deformed.
綜上所述，由於本發明所揭露之鼓式煞車機構是利用煞車凸輪與固定盤之間的配置變化來達成使第一煞車蹄片及第二煞車蹄片皆能完全抵緊摩擦輪鼓之目的，故其整體煞車制動效果可以被有效提升。In summary, the drum brake mechanism disclosed in the present invention utilizes the configuration change between the brake cam and the fixed disc to achieve that the first brake shoe and the second brake shoe can completely abut the friction drum. Purpose, so the overall brake effect can be effectively improved.
雖然本發明已以較佳實施例揭露於上，然其並非用以限定本發明，任何熟習此項技藝者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in its preferred embodiments, it is not intended to limit the present invention, and it is possible to make some modifications and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
1、100、100’．．．鼓式煞車機構1, 100, 100’. . . Drum brake mechanism
10、110．．．輪鼓10, 110. . . Drum
20、120、120’．．．固定盤20, 120, 120’. . . Fixed disk
21、121、121’．．．盤體21, 121, 121’. . . Disk body
21a、121’a．．．直孔21a, 121’a. . . Straight hole
22、122、122’．．．煞車凸輪22, 122, 122’. . . Brake cam
22a、122a．．．抵接頭部22a, 122a. . . Abutment joint
22b、122b．．．直柱體22b, 122b. . . Straight cylinder
23、123．．．固定銷23, 123. . . Fixed pin
24、124．．．第一煞車蹄片24,124. . . First brake shoe
25、125．．．第二煞車蹄片25, 125. . . Second brake shoe
26、126．．．拉伸彈簧26, 126. . . Tension spring
30、130．．．煞車臂30, 130. . . Brake arm
40、140．．．煞車導線40, 140. . . Brake wire
121a．．．錐形孔121a. . . Conical hole
121a’、121’a’．．．內壁121a’, 121’a’. . . Inner wall
122’b．．．錐形柱體122’b. . . Tapered cylinder
127．．．油封127. . . Oil seal
G、G’．．．間隙G, G’. . . gap
第1圖係顯示一種習知之鼓式煞車機構之平面示意圖；Figure 1 is a plan view showing a conventional drum brake mechanism;
第2圖係顯示習知之鼓式煞車機構之部份剖面及平面示意圖；Figure 2 is a partial cross-sectional and plan view showing a conventional drum brake mechanism;
第3A圖係顯示本發明之鼓式煞車機構於一種運作狀態下之平面示意圖；Figure 3A is a plan view showing the drum brake mechanism of the present invention in an operational state;
第3B圖係顯示本發明之鼓式煞車機構於另一種運作狀態下之平面示意圖；Figure 3B is a plan view showing the drum brake mechanism of the present invention in another operating state;
第4圖係顯示根據本發明之第一實施例之鼓式煞車機構之部份剖面及平面示意圖；以及Figure 4 is a partial cross-sectional and plan view showing a drum brake mechanism according to a first embodiment of the present invention;
第5圖係顯示根據本發明之第二實施例之鼓式煞車機構之部份剖面及平面示意圖。Figure 5 is a partial cross-sectional and plan view showing a drum brake mechanism according to a second embodiment of the present invention.
100．．．鼓式煞車機構100. . . Drum brake mechanism
110．．．輪鼓110. . . Drum
120．．．固定盤120. . . Fixed disk
121．．．盤體121. . . Disk body
121a．．．錐形孔121a. . . Conical hole
121a’．．．內壁121a’. . . Inner wall
122．．．煞車凸輪122. . . Brake cam
122a．．．抵接頭部122a. . . Abutment joint
122b．．．直柱體122b. . . Straight cylinder
123．．．固定銷123. . . Fixed pin
124．．．第一煞車蹄片124. . . First brake shoe
126．．．拉伸彈簧126. . . Tension spring
127．．．油封127. . . Oil seal
130．．．煞車臂130. . . Brake arm
140．．．煞車導線140. . . Brake wire
G．．．間隙G. . . gap
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100120496A TWI421193B (en) | 2011-06-13 | 2011-06-13 | Drum brake mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100120496A TWI421193B (en) | 2011-06-13 | 2011-06-13 | Drum brake mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201249699A TW201249699A (en) | 2012-12-16 |
| TWI421193B true TWI421193B (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100120496A TWI421193B (en) | 2011-06-13 | 2011-06-13 | Drum brake mechanism |
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| Country | Link |
|---|---|
| TW (1) | TWI421193B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498881B (en) * | 2013-10-13 | 2015-12-23 | 盐城市诚良高尔夫电动车配件有限公司 | A kind of drum brake of electric bicycle |
| TWI613377B (en) * | 2016-12-21 | 2018-02-01 | 三陽工業股份有限公司 | Drum brake structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM351815U (en) * | 2008-10-07 | 2009-03-01 | Chen Chong Rong | Structural improvement of drum brake |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM351815U (en) * | 2008-10-07 | 2009-03-01 | Chen Chong Rong | Structural improvement of drum brake |
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| TW201249699A (en) | 2012-12-16 |
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