• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The lever (1) forms part of the brake linkage of a motor vehicle. When the lever (1) is rotated in a counter-clock-wise direction, the cam (17) is rotated by the action of the small lever (20) which has its end (20) engaged in the slot in the fixed bracket (19). The cam (17) lifts the rod (26) which rotates the shaft (7) through the slipping clutch (31) and drives the worm (6). The worm (6) drives the worm wheel (12) which has splines (3) which secure the lever (1) to the lever mounting spindle. The angle of the return travel of the lever is thus reduced by the angle of rotation of the worm wheel and so the position of the lever (1) is adjusted to compensate for wear of brake lining.
    公开号:SU837315A3
    申请号:SU772502197
    申请日:1977-07-12
    公开日:1981-06-07
    发明作者:Сидней Мосс Норман；Чарльз Найт Питер
    申请人:Гирлинг Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (54) ADJUSTING BRAKE LEVER
    rotational mobility in the cavity formed by the two end KRYSHK1L1I
    4 and 5, mounted on opposite sides of the housing.
    The screw b, which is engaged with the worm gear 2, is connected to the axis 7 installed in the opening 8 of the housing 1. The hole 8 is rasped, tangential to the axis of the brake lead and in the middle part has an increased diameter to form walls 9 and 10, between which the worm is set to b.
    Not. At one end 11 of the hole 8, there is a cavity 12 in which the end 13 of the axis 7 protrudes. The end of the axis 7 protruding beyond the cover 14 is made with a non-circular head 15 so that it can turn the shaft and the worm to.
    The case also contains mechanisms 16 for automatic rotation of the screw b, designed to compensate for the wear of the friction brake elements. The mechanism includes a shaft 17 mounted in holes 18 parallel to the axis of the worm gear 2, with a radial offset from the axis 7, the shaft 17 is connected to a fixed part, for example with a bracket 19, using a diametrical pin 20, the end part 21 of which is bent and missed parallel to axis 7 in a groove made in bracket 19. Shaft 17 is connected to axis 7 by means of a pusher 22 and a friction clutch 23. The pusher 22 is made in the form of parallel sides and, when linearly moving, is directed by parallel sides of a slot 24, ying tangentially to the brake shaft and perpendicular to axis 7. At one end of the plunger 22 is a projection forming a stop for one end of the return pruzhiny.25, under the action of which the pawl permanently engages with the cam 26 on the shaft 17.
    The clutch 23 is multi-plate and contains alternating inner and outer: relatively rotating main and auxiliary friction disks 27 and 28. The disks 27 are fixed on a section 29 of a smaller diameter, ty. 30, surrounding the end 13 of axis 7,. The sleeve 30 is the leading element of the free clutch. stroke, the trailing element is the axle 7. The disks 27 and 26 are pressed against the flange 31 by means of a spring 32, the catser is installed with a stop in the washer 33, which is V-shaped. The ends of the washer 33 are installed in the opposite opposite slots 34 at the end 13 of axis 7.
    Each of the disks 28 is made with two axial grooves 35 and 3B placed under the grill, between which a tooth 37 is formed, and all the tooth 37 enters grooves 38 made in the pushrod 22. In the off position, the tooth 37 is removed from the side wall 39 of the groove 38 on ; distance: corresponding to a given gap between the friction brake elements.
    During operation, with an angular displacement of the housing 1 clockwise, i.e. in the direction of the application of the braking force, as shown in Fig. 1, the brake shaft is rotated by means of a screw and a worm gear 2 until a gap is selected in the friction brake elements. During this movement, the shaft 17 also rotates, causing the pusher 22 to slip into the slot 24, overcoming the force of the spring 25, while the wall 39 moves away from the teeth
    37, and the wall 40 moves toward them to reduce the play clearance between them. Typically, the wall 40 is not in contact with the teeth 37, unless it is necessary to compensate for the gap from the wear of the friction brake elements.
    When the angular movement of the housing 1 is transmitted through the worm to the b and the worm gear 2 on the brake shaft to activate the brake and also to rotate the shaft 17, the wall 40 rotates the disks 28. Once the mentioned brake gaps are selected, the engagement forces between the worm b and the worm gear 2 reaches such a value that the limiting torque of the clutch is sufficient to rotate the worm b. After that, the clutch 23 slips, and no adjustment takes place.
    If the friction elements of the brake are worn out, then at the initial moment of the angular displacement to sample the brake gaps after the freewheel clearances were selected, the clutch disks 28 rotate with the disk; -1-2 27, the disks 27 rotate the axis 7 and the follower b. The worm rotates the worm gear 2 relative to the housing 1 and the adjustment is achieved. When all the gaps in the brake are selected, the clutch 23 slips.
    When the brake is disconnected under the action of the energy accumulated in the spring 25, the pusher 22 is held in engagement with the shaft 17, with the result that the disks 28 are returned to
    exiting the position with the help of the wall 39, mixing it with a tooth 37. Due to the presence of the freewheel, the disks 27 rotate kneading with the clutch disks 28 relative to the axis 7.,
    In another embodiment, the design of the spring 25, working in compression Zs1 replaced by several disc springs 41.
    In the adjustment lever shown in FIGS. 8-12, the coupling 23 contains inner and outer rotating cone elements 42 and 43, of which the inner element 42 is installed in the friction ring 44 installed in the cavity 12, and is connected to. The axle 7 is a freewheel. The inner element 42 is cup-shaped and is mounted on a section 45 of a reduced axis diameter 7. Element 42 is formed with an outer inclined surface 46, which, under the action of a spring washer 47, interacts with a mating inner surface 48 on the outer element 43. At the outer end of the element 43, two grooves 49 and 50 are formed at an angle, between which a tooth 51 is formed, which enters the groove 38 of the pusher 22.
    Works adjustment lever, shown in Fig.8-12, as well as previously described.
    权利要求:
    Claims (4)
    [1]
    1. An adjusting lever for an automotive brake comprising a housing in which a worm gear is mounted, connected to the brake shaft, a screw and an automatic rotation mechanism of the screw axis when the housing rotates relative to a fixed part, characterized in that , the automatic rotation mechanism is made in the form of a friction clutch, the leading element of which is connected by means of a transmission link having a svbrdny course equal to the optimum clearance in the brake elements with turning The coupling shaft is connected to the fixed part, and the driven element of the friction clutch is connected to the axis of the screw by means of a freewheel, while the driving and driven elements of the friction clutch are preloaded to the other by means of a spring.
    [2]
    2. The adjustment lever according to claim 1, 5, which is distinguished by the fact that
    the transmission link is made in the form of a spring-loaded pusher with a lateral groove, and a Q radial tooth is made on the leading element of the friction clutch, which enters the specified groove with a gap relative to the side walls of the groove, and the gap is equal to the free motion of the transmission link.
    [3]
    3. Adjustment lever according to n.l,
    5 characterized in that the friction clutch is multi-disk.
    [4]
    4. A regulating lever according to claim 1, characterized in that the elements of the friction clutch are tapered.
    Priority nyHKTaMv paragraphs 1,2 and 4 - 07/13/76; p.3 - 12.05.77.
    Sources of information taken into account in the examination
    1, UK Patent No. 1085048 class, F 2 E, published. 1967.
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    类似技术:
    公开号 | 公开日 | 专利标题
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    US2003322A|1935-06-04|Automatic clutch
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    同族专利:
    公开号 | 公开日
    FR2358589A1|1978-02-10|
    HU174742B|1980-03-28|
    CA1059044A|1979-07-24|
    IT1076100B|1985-04-22|
    FR2358589B1|1983-02-18|
    SE414331B|1980-07-21|
    JPS5314267A|1978-02-08|
    SE7708108L|1978-01-14|
    DE2731725A1|1978-01-19|
    NL7707664A|1978-01-17|
    BR7704569A|1978-05-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1532857A|1966-08-03|1968-07-12|Westinghouse Bremsen Apparate|Device for automatic readjustment of the camshaft lever of a brake|
    GB1189319A|1967-10-31|1970-04-22|Westinghouse Brake & Signal|Automatic Slack Adjusters|
    HU163657B|1970-12-28|1973-10-27|
    DE2210658A1|1971-03-08|1972-09-21|
    DE2346418A1|1973-09-14|1975-03-27|Maschf Augsburg Nuernberg Ag|Automatic drum expansion brake adjuster - has nut and screw adjuster to prevent lock-up after successive heavy braking|JPS5669149A|1979-11-09|1981-06-10|Daiken Trade & Ind Co Ltd|Manufacturing method of molding material by microwaves irradiation|
    SE420014B|1979-12-13|1981-09-07|Sab Automotive Ab|BRAKE HEAT FOR A TRUMBROMS|
    WO1983001398A1|1981-10-13|1983-04-28|Snook, Harvey|Apparatus and method for magnetic separation|
    US4452343A|1981-11-24|1984-06-05|Westinghouse Brake And Signal Company Ltd.|Road brake slack adjuster|
    FR2548310B1|1983-06-30|1985-12-13|Valeo|COUPLING APPARATUS SUCH AS A BRAKE OR THE LIKE WITH A WEAR CATCHER|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB29040/76A|GB1540237A|1976-07-13|1976-07-13|Automatic slack adjusters for vehicle brake linkages|
    GB1993277|1977-05-12|
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