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公开(公告)号：US5085296A
公开(公告)日：1992-02-04
申请号：US572195
申请日：1990-08-23
CPC分类号： F16D65/562 , F16D2125/64
摘要： The mechanically actuated brake (10) comprises a laterally movable sleeve housing (22) which is attached by way of slots (24) and connections (26) with the support plate (28). A mechanical actuator and adjuster mechanism (40) has parts (42, 48) received within a longitudinal through opening (27) of the housing (22), a first part (42) of the mechanism (40) abutting one brake shoe end (20) while a second part (48) of the mechanism (40) abuts the other brake shoe end (18). A lever (50) for service brake operation is attached pivotably by a connection pin (30) with the housing (22) and extends through a transverse through opening (29) of the housing (22). The lever (50) is received within a slot (49) of the second part (48) of the mechanism (40), and includes an actuating arm (57) which extends through the housing (22) and is engagable with an actuating arm (66) of a pawl (60) that actuates the adjuster portion of the mechanism (40). The pin connection (30) also mounts rotatably the pawl (60) to the housing (22). The pawl (60) includes a spring support flap (67) which receives one end of a spring (70) attached to the one brake shoe end (20).
摘要翻译： 机械驱动的制动器（10）包括横向可移动的套筒壳体（22），其通过槽（24）和连接件（26）与支撑板（28）连接。 机械致动器和调节器机构（40）具有容纳在壳体（22）的纵向通过开口（27）内的部分（42,48），机构（40）的第一部分（42）邻接一个制动蹄端 20），而机构（40）的第二部分（48）邻接另一个制动蹄端（18）。 用于行车制动操作的杠杆（50）通过与壳体（22）的连接销（30）可枢转地附接并且延伸穿过壳体（22）的横向通过开口（29）。 杆（50）被容纳在机构（40）的第二部分（48）的槽（49）内，并且包括延伸穿过壳体（22）并且可与致动臂接合的致动臂（57） （60）的棘爪（66），其致动所述机构（40）的调节器部分。 销钉连接件（30）也将棘爪（60）可旋转地安装到壳体（22）上。 棘爪（60）包括弹簧支撑翼片（67），该弹簧支撑翼片容纳连接到一个制动靴端部（20）的弹簧（70）的一端。
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公开(公告)号：US3949843A
公开(公告)日：1976-04-13
申请号：US566013
申请日：1975-04-07
申请人： Orla L. Holcomb, Jr.
发明人： Orla L. Holcomb, Jr.
IPC分类号： F16D65/54
CPC分类号： F16D65/543
摘要： An automatically operative brake adjuster includes a cup-shaped member attached to a brake carrier member, with this member cooperating with a stepped bore in the carrier member to form an annular chamber having spaced opposed end surfaces. An annular follower member, slidably received and spring-biased within the annular chamber, has flange portions on opposite ends, with these flange portions cooperating with the opposed end surfaces to limit the movement of the follower member in both the brake-release and the brake-application directions. A piston, extending freely through the annular chamber, includes a tapered portion that carries a deformable hollow member in the annular chamber and is interference-fitted therewith. The hollow member, which preferably takes the shape of a circular or elliptical cylinder, is in abutment with one of the flange portions and, in response to pressurized fluid, the piston moves together with the hollow member and follower in the brake-application direction until the other flange portion engages one of the opposed end surfaces whereupon the piston is forceably urged through at least an axial portion of the hollow member and causes deformation thereof and axially repositions the piston to take up the undesired brake clearance. Brake release, in response to depressurization of the piston and the urging of the spring on the follower member, moves the piston together with the hollow and follower members until the latter engages one of the opposed end surfaces and thereby establishes a constant brake running clearance.
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公开(公告)号：US4180149A
公开(公告)日：1979-12-25
申请号：US925912
申请日：1978-07-19
CPC分类号： F16D65/22 , F16D51/24 , F16D51/48 , F16D65/08 , F16D65/565
摘要： A drum brake is provided with a pair of brake shoes having axially inner and outer webs for supporting friction linings. A backing plate mounts the pair of brake shoes by providing radially outwardly extending lugs which are disposed between the inner and outer webs to prevent axial movement of the pair of brake shoes. Moreover, springs are disposed between respective lugs and portions extending between the webs to bias the portions into engagement with recesses on the backing plate. A double hydraulic actuator is positioned between the pair of braking shoes with one actuator cooperating with the inner webs and the other actuator cooperating with the outer webs during a braking application to urge the friction linings into engagement with a drum. The inner and outer webs also include slots substantially opposite the double hydraulic actuator for receiving plates which mount an adjustment mechanism between the pair of brake shoes.
摘要翻译： 鼓式制动器设置有一对具有用于支撑摩擦衬里的轴向内部和外部腹板的制动蹄。 背板通过设置在内腹板和外腹板之间的径向向外延伸的凸耳来安装一对制动蹄，以防止一对制动蹄的轴向移动。 此外，弹簧设置在相应的凸耳和在腹板之间延伸的部分之间，以将部分偏置成与背板上的凹部接合。 双重液压致动器位于一对制动踏板之间，其中一个致动器与内腹板协作，另一个致动器在制动施加期间与外腹板配合以促使摩擦衬垫与滚筒接合。 内部和外部腹板还包括与双重液压致动器基本相对的槽，用于接纳在一对制动蹄之间安装调节机构的板。
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公开(公告)号：US5201390A
公开(公告)日：1993-04-13
申请号：US890512
申请日：1992-05-28
IPC分类号： F16D65/09
CPC分类号： F16D65/091
摘要： The shoe hold down spring (40) comprises a single wave form or serpentine shaped leaf spring (40) which is engaged at opposite ends (42, 44) by hold down pins (53, 55) of a drum brake. The hold down pins (53, 55) are connected with the backing plate (12) and extend through respective openings (21, 23) within a brake shoe web (20). The hold down spring (40) includes opposite ends (42, 44) and a middle portion (41) all of which extend away and are spaced-apart from the shoe web (20), and two intermediate curved portions (47, 49) which engage the web (20). The opposite ends (42, 44) of the hold down spring (40) have slots (43, 45) extending inwardly from spring edges (42A, 44A), and small curved recesses (42B, 44B) which effect securement of ends (53A, 55A) of the pins (53, 55) to the spring (40). The pins (53, 55) have laterally extending wings (53B, 55B) at the pin ends (53A, 55A) which are received within the small curved recesses (42A, 44A) at the respective ends (42, 44) of the spring (40).
摘要翻译： 鞋扣按压弹簧（40）包括单波形或蛇形形状的弹簧（40），其通过压紧鼓式制动器的销（53,55）与相对端（42,44）接合。 压紧销（53,55）与背板（12）连接并延伸通过闸瓦腹板（20）内的相应开口（21,23）延伸。 按压弹簧（40）包括相对的端部（42,44）和中间部分（41），所述中间部分（41）全部延伸离开并且与鞋带（20）间隔开，并且两个中间弯曲部分（47,49） 其接合网（20）。 压紧弹簧（40）的相对端（42,44）具有从弹簧边缘（42A，44A）向内延伸的槽（43,45）和小弯曲凹槽（42B，44B），其实现端部（53A）的固定 ，55A）连接到弹簧（40）。 销（53,55）在销端（53A，55A）处具有侧向延伸的翼（53B，55B），它们被接收在弹簧的相应端部（42,44）处的小弯曲凹槽（42A，44A）内 （40）。
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公开(公告)号：US4217974A
公开(公告)日：1980-08-19
申请号：US892634
申请日：1978-04-03
申请人： Orla L. Holcomb, Jr.
发明人： Orla L. Holcomb, Jr.
CPC分类号： F16D55/46 , F16D2125/36
摘要： The present invention relates to an improvement in a band brake wherein a plurality of rotors and stators provide for braking a rotatable member when a friction lining on the band brake is engageable with the rotatable member. The rotatable member carries an axially extendible assembly which is engageable with the friction lining to provide for extension of the axially extendible assembly. When the assembly is extended, the rotors which rotate with the rotatable member and the stators which are carried by a support housing are moved axially into frictional engagement with each other. The extendible assembly comprises a first element carried by a key on the rotatable member to impart rotation with the rotatable member and permit axial movement relative to the rotatable member, and a second element resiliently connected to the first element. The first element and second element include a cam therebetween such that when the second element engages the friction lining of the band brake, the second element rotates through a limited angle relative to the first element to increase the axial spacing between the elements by the action of the cam. The first element is also engageable with the friction lining to eliminate noise and instability in the action between the elements and the cam. In order to engage the friction lining with the rotatable member, the support housing forms a hydraulic actuator with at least one piston and a pair of links which are pivotably connected to each other cooperate with the friction lining when the hydraulic actuator is operated to contract the friction lining into engagement with the rotatable member.
摘要翻译： 本发明涉及带式制动器的改进，其中当带式制动器上的摩擦衬里与可旋转构件接合时，多个转子和定子提供制动可旋转构件。 可旋转构件承载可轴向延伸的组件，其可与摩擦衬里接合以提供可轴向延伸组件的延伸。 当组件延伸时，与可旋转构件一起旋转的转子和由支撑壳体承载的定子被轴向地移动成彼此摩擦接合。 可延伸组件包括由可旋转构件上的键承载的第一元件，以使可旋转构件转动以允许相对于可旋转构件的轴向移动，以及弹性地连接到第一元件的第二元件。 第一元件和第二元件包括其间的凸轮，使得当第二元件接合带式制动器的摩擦衬片时，第二元件相对于第一元件旋转有限的角度，以通过作用使第二元件之间的轴向间距增大 凸轮。 第一个元件还可以与摩擦衬片接合，以消除元件和凸轮之间的动作中的噪音和不稳定性。 为了将摩擦衬里与可旋转构件接合，支撑壳体形成液压致动器，其中当液压致动器被操作以收缩时，至少一个活塞和一对可枢转地彼此连接的连杆与摩擦衬层配合 摩擦衬片与可旋转构件接合。
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公开(公告)号：US3995723A
公开(公告)日：1976-12-07
申请号：US604276
申请日：1975-08-13
申请人： Orla L. Holcomb, Jr.
发明人： Orla L. Holcomb, Jr.
CPC分类号： F16D65/543 , F16D65/18 , F16D2121/02
摘要： A rigid and deformable hydraulic seal for a force-applying mechanism, the seal being interposed between a piston and a housing cavity. This seal is generally cup-shaped and has an annular outer end portion that is rigidly retained in a peripheral groove of the housing cavity. Adjacent to this end portion is a half torus or single convolution hoop portion open toward the cavity, with the seal further including a generally cylindrical side surface and a circular bottom portion, with this seal, together with the cavity, defining a fluid-tight variable volume chamber. Fluid pressure supplied to this chamber causes plastic deformation of the seal and permits relative motion to occur between the piston and housing. When used in a hydraulic brake apparatus, the plastic deformation of the seal provides automatic brake adjustment as a factor of lining material wear, whereas the elastic deformation which occurs as the fluid pressure in the chamber is reduced provides a slight retraction capability of the friction lining from the rotating brake member.
摘要翻译： 用于施力机构的刚性且可变形的液压密封件，密封件插入在活塞和壳体腔之间。 该密封件通常是杯形的并且具有刚性地保持在壳体腔的外围槽中的环形外端部分。 与该端部相邻的是半圆环或单个卷曲环部分朝向空腔开口，密封件还包括大致圆柱形的侧表面和圆形底部部分，该密封件与空腔一起限定流体密封变量 容积室。 提供给该室的流体压力导致密封件的塑性变形，并且允许在活塞和壳体之间发生相对运动。 当用于液压制动装置时，密封件的塑性变形提供作为衬里材料磨损的因素的自动制动器调节，而随着腔室中的流体压力而发生的弹性变形提供摩擦衬里的轻微回缩能力 从旋转的制动构件。
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