• 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:
    A foot brake release device so adapted that a slight and instant pull of a parking release knob for releasing the parking activated state at the parking brake pedal enables to completely release the parking activated state of the parking brake pedal, thereby removing separate inconvenient checking of full release of the parking actuated state and promoting a safe operation of an automobile, the device comprising: a parking brake pedal equipped at one side thereof with a ratchet gear and mounted rotatively; a ratchet plate equipped with a ratchet gear meshed to a ratchet gear and mounted rotatively; a torsion spring mounted at the ratchet plate for the parking brake pedal to rotate at a predetermined angle for maintenance of a locked state and to restrict the ratchet plate from rotating in one direction; and torsion spring slack keeping unit for maintaining slacked state of the torsion spring when the parking brake pedal is returned for rotation.
    公开号:US20010003928A1
    申请号:US09/738,779
    申请日:2000-12-15
    公开日:2001-06-21
    发明作者:Taeg-Jo Kim
    申请人:Hyundai Motor Co；
    IPC主号:B60T7-047
    专利说明:
    [0001] 1. Field of the Invention [0001]
    [0002] The present invention relates to a foot brake, and more particularly to a release device of a foot brake adapted to completely release a parked state of the foot brake just by instantly pulling a parking release knob, thereby removing inconvenience of separately checking whether the parking state is completely released and promoting a safe operation of an automobile. [0002]
    [0003] 2. Description of the Prior Art [0003]
    [0004] Generally, a parking brake of an automobile serves to brake rear wheels for maintaining a braked state when the automobile is parked, and a parking brake according to the prior art is operated to brake an automobile by adhering a parking brake shoe at the rear wheels to a parking brake drum when an operator pulls a parking brake manipulating lever, at which time, frictional force generated therefrom brakes the automobile. [0004]
    [0005] Meanwhile, besides the hand brake thus described, a foot parking brake for braking an automobile by applying pressure by foot is disclosed. A foot parking brake according to the prior art is depicted in FIGS. 1, 2 and [0005] 3, where a floor panel near a driver is mounted with an installation panel 2 on which a parking brake pedal 1 is rotatively hinged thereto, and the parking brake pedal 1 is connected at one tip end thereof to one tip end of a parking brake cable 7.
    [0006] The parking brake pedal [0006] 1 is formed at one side thereof with a ratchet gear 3, and a ratchet plate 5 formed at one side thereof with the ratchet gear for meshing therewith is rotatively supported to the installation plate 2 via a rotary axle 5 a.
    [0007] Furthermore, the ratchet plate [0007] 5 is rotatively supported at the rotary axle 5 a thereof by one side of a release lever 17, while the release lever 17 is connected at the other end thereof to one end of a parking release cable 9. The parking release cable 9 is mounted at the other end thereof with a parking release knob 9 a for a driver to manipulate.
    [0008] The ratchet plate [0008] 5 is wound with a torsion spring 11 while the torsion spring 11 is fixed at one end thereof to a bracket 2 a of the installation plate 2 and is connected at the other end thereof to a free end.
    [0009] Furthermore, between a predetermined area of the installation plate [0009] 2 and the parking brake pedal 1 there is formed a pedal damper 19 for softening the shock when the parking brake pedal 1 is pressed or released. The pedal 1 is connected to a return spring 13 while the ratchet plate 5 is connected to another return spring 15.
    [0010] When a drive steps on the parking brake pedal [0010] 1 for parking an automobile, the pedal 1 is rotated via a hinge toward an arrow “A” direction in FIG. 2 (counterclockwise) whereby, the parking brake cable 7 connected to the pedal 1 is pulled to cause a rear parking brake shoe to adhere to a parking brake drum and to allow a parking brake to actuate.
    [0011] At this time, the parking brake can maintain the actuated state as long as the parking brake pedal [0011] 1 keeps a counterclockwise rotating state, the role of which is taken care of by the torsion spring 11.
    [0012] In other words, when the parking brake pedal [0012] 1 is rotated counterclockwise by manipulation of a driver while the ratchet gear 3 of the parking brake pedal 1 is meshed with ratchet gear of the ratchet plate 5, the torsion spring 11 wound around the ratchet plate 5 is slackened. However, when the parking brake pedal 1 is freed from the driver, the parking brake pedal 1 tends to rotate clockwise by the return spring 13, at which time, the torsion spring 11 is wound by rotation of the ratchet plate 5. When the torsion spring 11 is wound to a predetermined level, the spring 11 is no longer wound, which causes the ratchet plate 5 to be locked and also makes the parking brake pedal 1 meshed to the ratchet plate 5 locked, whereby the parking brake pedal 1 keeps maintaining the counterclockwise rotated state.
    [0013] Meanwhile, in releasing the parking brake, the driver pulls the parking release knob [0013] 9 a to allow the release lever 17 to rotate via the parking release cable 9 connected to the parking release knob 9 a, whereby a protruder 17 b formed at an extension 17 a of the release lever 17 pushes a free end 11 b of the torsion spring 11 to slacken the wound torsion spring 11 to a predetermined length. By this, the ratchet plate 5 and the parking brake pedal 1 are freed from the torsion spring 11 to return to original position via respective return springs 15 and 13.
    [0014] However, there is a problem in the releasing operation of the foot brake according to the prior art thus described in that torsion spring's pushing state of free end [0014] 11 b by the release lever 17 should be kept for a predetermined period of time while the parking release is actuated to smoothly turn the ratchet plate 5 and the parking brake pedal to a rotatable state, but if the driver pulls and instantly releases the parking release knob 9 a, the parking brake pedal 1 cannot be completely returned to rotation due to locking operation of the torsion spring, thereby enabling an automobile to run even while the parking brake is actuated.
    [0015] Particularly, there is another problem in that viscosity of oil in damper in cold weather gets reduced, making a driver pull the parking release knob for a long time. [0015]
    [0016] The present invention is disclosed to solve the aforementioned problems and it is an object of the present invention to provide a foot brake release device adapted to completely release a parking actuated state of a parking brake pedal just by instantly pulling a parking release knob for releasing the parking actuated state of the parking brake pedal, thereby removing inconvenience of separately checking whether the parking actuated state is completely released and promoting a safe operation of an automobile. [0016] SUMMARY OF THE INVENTION
    [0017] In accordance with the object of the present invention, there is provided a foot brake release device, the device comprising: [0017]
    [0018] a parking brake pedal equipped at one side thereof with a ratchet gear and mounted rotatively; [0018]
    [0019] a ratchet plate equipped with a ratchet gear meshed to a ratchet gear and mounted rotatively; [0019]
    [0020] a torsion spring mounted at the ratchet plate for the parking brake pedal to rotate at a predetermined angle for maintenance of a locked state and to restrict the ratchet plate from rotating in one direction; and [0020]
    [0021] torsion spring slack keeping means for maintaining slacked state of the torsion spring when the parking brake pedal is returned for rotation, wherein the torsion spring slack keeping means further comprises: [0021]
    [0022] a hinge member; [0022]
    [0023] a lock lever mounted with a first bend rotatively connected to the hinge member and contactable to the ratchet plate, and a second bend extended to contact a free end of the torsion spring; and [0023]
    [0024] resilient member mounted at the lock lever for resiliently supporting the lock lever. [0024] BRIEF DESCRIPTION OF THE DRAWINGS
    [0025] For fuller understanding of the nature and objects of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings in which: [0025]
    [0026] FIG. 1 is a lateral view for illustrating a foot brake device according to the prior art; [0026]
    [0027] FIG. 2 is a lateral view for illustrating an operating state of the foot brake device in FIG. 1; [0027]
    [0028] FIG. 3 is a perspective view for illustrating an arrangement of principal parts for parking release in FIG. 1; [0028]
    [0029] FIG. 4 is a lateral view for illustrating a foot brake device according to the present invention; [0029]
    [0030] FIG. 5 is a perspective view for illustrating an arrangement of principal parts for parking release in FIG. 4; [0030]
    [0031] FIG. 6 is a constitutional drawing for illustrating a parking release operation of principal parts in FIG. 5; and [0031]
    [0032] FIG. 7 is a schematic drawing for illustrating principal parts for releasing the parking according to one embodiment of the present invention. [0032] DETAILED DESCRIPTION OF THE INVENTION
    [0033] Now, preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. [0033]
    [0034] FIG. 4 is a lateral view for illustrating a foot brake device according to the present invention, FIG. 5 is a perspective view for illustrating an arrangement of principal parts for parking release in FIG. 4, FIG. 6 is a constitutional drawing for illustrating a parking release operation of principal parts in FIG. 5, and FIG. 7 is a schematic drawing for illustrating principal parts for releasing the parking according to one embodiment of the present invention, where like reference numerals throughout the drawings are used for designation of like or equivalent parts or portions as in FIGS. 1, 2 and [0034] 3 for simplicity of illustration and explanation, and redundant explanation thereto will be omitted.
    [0035] As illustrated in the drawings, the foot brake release device according to the present invention further torsion spring slack keeping means for maintaining a slacked state of the torsion spring [0035] 11 until the parking release knob is manipulated by a driving to allow the braking brake pedal 1 and the ratchet plate 5 are completely returned via respective return springs 13 and 15.
    [0036] The torsion spring slack keeping means includes a hinge member [0036] 31 fixed to a rear surface of the installation plate 2, a lock lever 30 equipped with a first bend rotatively connected to the hinge member and contactable to the ratchet plate and a second bend 35 extended to contact free end 11 b of the torsion spring 11, and a resilient member 40 mounted at the lock lever 30 for resiliently supporting the lock lever 30. Furthermore, the first and second bends 33 and 35 are oppositely formed at each end thereof with inclined parts 33 a and 35 a.
    [0037] Now, operational effect of the present invention thus constructed will be described. [0037]
    [0038] First of all, when a driver steps on the parking brake pedal [0038] 1 for parking, the parking brake cable 7 is pulled and the parking brake shoe at rear wheels adhere the parking brake drum to allow the parking brake to perform braking operation.
    [0039] At this time, when the driver frees the pedal, the parking brake pedal [0039] 1 starts to rotate clockwise by return spring 13, at which time, the torsion spring 11 is wound by rotation of the ratchet plate 5. When the torsion spring 11 is wound upto a predetermined amount, it stop being wound. By this the ratchet plate 5 is locked and simultaneously the parking brake pedal 1 meshed to the ratchet plate 5 is also locked whereby, the parking brake pedal 1 maintains a counterclockwise rotated state (locked state of parking brake).
    [0040] Furthermore, when the parking release knob [0040] 9 a is pulled for parking release, the free end 11 b at the torsion spring 11 is pushed for the mount by the protruder 17 b of the release lever 17, such that the wound torsion spring 11 is again unwound and slackened and rotative return to parking release direction is made via return springs 13 and 15 while the parking brake pedal 1 and the ratchet plate 5 are mutually meshed.
    [0041] At this time, the bend [0041] 33 at the lock lever 30 touches surface of the ratchet gear 3 according to rotation of the ratchet gear 3. The lock lever 30 is then rotated by the touch about the hinge member 31 and by this rotative movement the other bend 35 of the lock lever 30 is made to further protrude than the free end 11 b of the torsion spring 11, such that the free end 11 b of the torsion spring 11 is hitched by the bend 35 to thereby maintain the slacked state of the torsion spring 11.
    [0042] In other words, even though the parking release knob [0042] 9 a is slightly pulled for a short period of time and released, the torsion spring 11 slackened by the release lever 17 keeps maintaining the slacked state according to the bend 35 of the lock lever 30 thereby easing the parking release operation and smoothening the same as well.
    [0043] Meanwhile, when the parking brake pedal [0043] 1 and the ratchet plate 5 are fully returned in rotation thereof, the bend 33 of the lock lever 30 no longer touches the ratchet gear 3, such that the lock lever 30 is returned to original position by resilient member 40 to release the torsion spring 11.
    [0044] As apparent from the foregoing, there is an advantage in the foot brake release device thus described according to the present invention in that a slight and instant pull of a parking release knob for releasing the parking activated state at the parking brake pedal enables to completely release the parking activated state of the parking brake pedal, thereby removing separate inconvenient checking of full release of the parking actuated state and promoting a safe operation of an automobile. [0044]
    权利要求:
    Claims (4)
    [1" id="US-20010003928-A1-CLM-00001] 1. A foot brake release device, the device comprising:
    a parking brake pedal equipped at one side thereof with a ratchet gear and mounted rotatively;
    a ratchet plate equipped with a ratchet gear meshed to a ratchet gear and mounted rotatively;
    a torsion spring mounted at the ratchet plate for the parking brake pedal to rotate at a predetermined angle for maintenance of a locked state and to restrict the ratchet plate from rotating in one direction; and
    torsion spring slack keeping means for maintaining slacked state of the torsion spring when the parking brake pedal is returned for rotation.
    [2" id="US-20010003928-A1-CLM-00002] 2. The device as defined in
    claim 1 , therein the torsion spring slack keeping means further comprises:
    a hinge member;
    a lock lever mounted with a first bend rotatively connected to the hinge member and contactable to the ratchet plate;
    a second bend extended to contact a free end of the torsion spring; and
    resilient member mounted at the lock lever for resiliently supporting the lock lever.
    [3" id="US-20010003928-A1-CLM-00003] 3. The device as defined in
    claim 2 , wherein each end of respective bends at the lock lever is oppositely mounted with an inclined part.
    [4" id="US-20010003928-A1-CLM-00004] 4. The device as defined in
    claim 1 or
    2 , wherein the ratchet plate is rotatively mounted at a rotary axle thereof with one end of the release lever, and the other end of the release lever is connected to a parking release cable mounted with a parking release knob, while the release lever is formed at one end thereof with an extension part and the extension part is equipped with a protruder for slackening the torsion spring by contact same.
    类似技术:
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    KR19980041488U|1998-09-15|Parking brake automatic release device
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    KR100586526B1|2006-06-07|Parking brake release system
    KR101033949B1|2011-05-11|Parking brake using main brake of vehicle
    KR19980041487U|1998-09-15|Parking brake automatic release device
    KR19990012908A|1999-02-25|Vehicle Foot Parking Braking System
    KR0141027B1|1998-07-01|Foot parking brake with wire-release device
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    KR20000000480U|2000-01-15|Release device of hand brake
    KR19990052097A|1999-07-05|Parking brake release device
    同族专利:
    公开号 | 公开日
    KR20010056665A|2001-07-04|
    KR100361275B1|2002-11-18|
    US6550354B2|2003-04-22|
    JP2001199318A|2001-07-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20060053951A1|2004-07-07|2006-03-16|Ventra Group Inc.|Push to release brake actuating assembly for a vehicle|US3487716A|1968-03-28|1970-01-06|Orscheln Brake Lever Mfg Co|Brake cable operating means|
    US3693472A|1970-12-28|1972-09-26|Orscheln Brake Lever Mfg Co|Parking brake operating means|
    US3839924A|1973-07-25|1974-10-08|Gen Motors Corp|Parking brake control mechanism|
    US4281736A|1979-04-16|1981-08-04|Lizzio Vincent P|Method and apparatus for automatically applying and releasing automotive type parking brakes|
    US4570508A|1984-06-08|1986-02-18|General Motors Corporation|Multi-stroke parking brake variable ratio apply and release mechanism|
    US4612823A|1985-09-23|1986-09-23|Wickes Manufacturing Company|Vehicle parking brake mechanism|
    US4841798A|1988-08-30|1989-06-27|Orscheln Co.|Foot-operated self-adjusting parking brake apparatus with controlled flyback|
    US5211072A|1990-07-26|1993-05-18|Dura Mechanical Components, Inc.|Variable ratio park brake with slack adjust|
    JP3247493B2|1993-06-16|2002-01-15|本田技研工業株式会社|Parking brake device|
    US5467666A|1994-07-07|1995-11-21|Dura Automotive Systems, Inc.|Non-jamming self-adjust pawl and ratchet mechanism|
    JPH08169320A|1994-12-20|1996-07-02|Aisin Seiki Co Ltd|Automatic cable adjusting mechanism for parking brake device|
    US5546828A|1995-01-13|1996-08-20|Atoma International Inc.|Parking brake|
    US5588335A|1995-04-28|1996-12-31|Strait; Daniel L.|Torsion lock parking brake actuator with push down release|
    JP3669009B2|1995-07-20|2005-07-06|アイシン精機株式会社|Vehicle foot-operated parking brake control device|
    US5832784A|1997-03-18|1998-11-10|Dura Automotive Systems, Inc.|Variable ratio parking brake control with enhanced cable take-up|
    US6105459A|1998-12-14|2000-08-22|Ford Motor Company|Cable lock and release apparatus|
    JP2000177546A|1998-12-17|2000-06-27|Otsuka Koki Co Ltd|Foot parking brake device|US20020184963A1|2001-06-08|2002-12-12|Champ Larry Brian|Controlled release parking brake system|
    US7478575B2|2004-09-27|2009-01-20|Ventra Group Inc.|Brake actuating assembly for a vehicle|
    KR100901574B1|2007-12-13|2009-06-08|현대자동차주식회사|Brake pedal assembly for automobile|
    CN104554198A|2013-10-23|2015-04-29|光阳工业股份有限公司|Parking device of multipurpose vehicle|
    JP6493367B2|2016-11-22|2019-04-03|トヨタ自動車株式会社|Manual release device for parking lock mechanism|
    US20190061725A1|2017-08-31|2019-02-28|Nissan North America, Inc.|Parking Brake Cable Stretch Assist Tool|
    法律状态:
    2001-04-17| AS| Assignment|Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, TAEG-JO;REEL/FRAME:011720/0859 Effective date: 20001011 |
    2006-11-08| REMI| Maintenance fee reminder mailed|
    2007-04-22| LAPS| Lapse for failure to pay maintenance fees|
    2007-05-23| STCH| Information on status: patent discontinuation|Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
    2007-06-19| FP| Expired due to failure to pay maintenance fee|Effective date: 20070422 |
    优先权:
    申请号 | 申请日 | 专利标题
    KR1999-58232||1999-12-16||
    KR99-58232||1999-12-16||
    KR1019990058232A|KR100361275B1|1999-12-16|1999-12-16|Release apparatus of step-on type parking brake for vehicle|
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