JPH0362930B2 - - Google Patents
Info
- Publication number
- JPH0362930B2 JPH0362930B2 JP9666383A JP9666383A JPH0362930B2 JP H0362930 B2 JPH0362930 B2 JP H0362930B2 JP 9666383 A JP9666383 A JP 9666383A JP 9666383 A JP9666383 A JP 9666383A JP H0362930 B2 JPH0362930 B2 JP H0362930B2
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- shoes
- drum
- hydraulic cylinder
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 244000208734 Pisonia aculeata Species 0.000 claims description 7
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/26—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes both extending in the same direction from their pivots
- F16D51/30—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes both extending in the same direction from their pivots fluid actuated
Description
【発明の詳細な説明】
本発明は、ドラム内面に摺動接触するブレー
キ・クラツチ機構の改良に関し、更に詳しくは略
点対称に配置された２個のシリンダ及びシユーか
らなるドラム式ブレーキ・クラツチ機構に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a brake/clutch mechanism that makes sliding contact with the inner surface of a drum, and more specifically, a drum-type brake/clutch mechanism consisting of two cylinders and shoes arranged approximately symmetrically. It is related to.
従来ドラム式ブレーキ・クラツチ機構として油
圧シリンダを用いたものは公知である。この公知
の機構は油圧シリンダによつてシユーを拡・縮
し、ドラム内面に接・離せしめるものであるが、
次の様な不具合を免れなかつた。 Conventionally, a drum type brake/clutch mechanism using a hydraulic cylinder is well known. This known mechanism uses a hydraulic cylinder to expand and contract the shoe and bring it into contact with and away from the inner surface of the drum.
The following problems could not be avoided.
シユーの作動に時間差をつけ所謂半ブレーキ・
半クラツチ操作をするためには、操作者が操作力
を微妙に調整するか、或は機械的に夫々のシユー
と油圧シリンダに当接するレバーの長さを変える
ことにより行なつていたが、前者においては操作
に熟練を要すると共に正確な操作が困難であつ
た。また、後者においては構造が複雑となりかつ
スペース上からもレバーの長さに限界があり、結
果的に自由に作動の時間差を選択できなかつた。 The so-called half brake
In order to perform a half-clutch operation, the operator had to finely adjust the operating force, or mechanically change the length of the lever that came into contact with each shoe and hydraulic cylinder. The operation required skill and was difficult to operate accurately. Moreover, in the latter case, the structure is complicated and there is a limit to the length of the lever due to space considerations, and as a result, it is not possible to freely select the time difference between the operations.
この発明は上記の不具合を改善し、構造簡単か
つ操作性の良いドラム式ブレーキ・クラツチ機構
を提供することを目的とするものである。 The object of the present invention is to improve the above-mentioned problems and provide a drum type brake/clutch mechanism that is simple in structure and easy to operate.
以下一実施例を図面に沿い説明する。 One embodiment will be described below with reference to the drawings.
１は固定部材で、略点対称位置に対向して突出
する第１の固定部２と同じく略点対称位置に対向
して突出する第２の固定部３とを有している。該
第１の固定部２には夫々例えば油圧シリンダ４等
の作動装置が装着され第２の固定部３にはシユー
５が半径方向に変位可能で倒れを調節しかつ規制
するように支持部７で支持されている。前記シユ
ー５は円弧状で外周にライニング６が取付けられ
ている。このシユー５には本実施例では第２の固
定部３との支持部７（Ｘ−Ｘ軸）を挾んで対称位
置に２本のバネ８1，８2が取付けられると共に、
該両バネ８1，８2のバネ常数を異ならせ、かつシ
ユー５をドラム２４の中心方向に引寄せるように
常時付勢されている。なお、両バネ８1，８2は前
記した如く支持部７を挾んで対称に装置しバネ常
数を異ならしめる外、一本或は数本のバネを支持
部７を挾んで非対称に装着して、シユー５の引戻
し力をＸ−Ｘ軸を挾む両側において異ならしめて
も同効である。 Reference numeral 1 denotes a fixing member, which has a first fixing part 2 that protrudes in a substantially point-symmetrical position and a second fixing part 3 that protrudes in a substantially point-symmetrical position. Each of the first fixed parts 2 is equipped with an actuating device such as a hydraulic cylinder 4, and the second fixed part 3 is equipped with a support part 7 so that the shoe 5 can be displaced in the radial direction to adjust and restrict the fall. It is supported by The shoe 5 has an arcuate shape and has a lining 6 attached to its outer periphery. In this embodiment, two springs 8 1 and 8 2 are attached to this shoe 5 at symmetrical positions sandwiching the supporting portion 7 (X-X axis) between the second fixing portion 3 and the second fixing portion 3 .
The springs 8 1 and 8 2 have different spring constants and are constantly biased to draw the shoe 5 toward the center of the drum 24 . As described above, both springs 8 1 and 8 2 are installed symmetrically with the support part 7 in between, and the spring constants are different. Alternatively, one or several springs can be installed asymmetrically with the support part 7 in between. The same effect can be obtained even if the retracting force of the shoe 5 is made different on both sides of the X-X axis.
前記シユー５は弧状の一方端が油圧シリンダ４
のピストン９によつてドラム２４方向に進退さ
れ、他方端は第１の固定部２に装着された油圧シ
リンダ４の反ピストン側に回転可能に支持されて
いる。油圧シリンダ４とシユー５のピストン９側
の係合は次の通りである。 The shoe 5 has an arcuate end connected to the hydraulic cylinder 4.
The other end of the hydraulic cylinder 4 mounted on the first fixed part 2 is rotatably supported on the side opposite to the piston of the hydraulic cylinder 4 . The engagement between the hydraulic cylinder 4 and the shoe 5 on the piston 9 side is as follows.
油圧シリンダ４のピストン９には、先端部に当
り面１０を有するロツド２３が螺入され、かつ該
当り面１０には、シユー５の端部にピン１３を介
して中央部を支持された略半円形の倍力部材１１
の一端が当接し、該倍力部材１１の他端は前記第
１の固定部２の基端付近に設けられた当り部１２
と当接している。 A rod 23 having a contact surface 10 at its tip end is screwed into the piston 9 of the hydraulic cylinder 4, and a rod 23 whose central portion is supported by the end of the shoe 5 via a pin 13 is screwed into the corresponding surface 10. Semicircular booster member 11
One end of the boosting member 11 abuts, and the other end of the boosting member 11 contacts an abutting portion 12 provided near the base end of the first fixing portion 2.
It is in contact with.
倍力部材１１は２箇所でシユー５に支持されて
いる。即ち、１箇所はピン１３によりまた他の１
箇所はシユー５に設けられた長穴１６を介して、
ボルト・ナツト１４によつて夫々支持されてい
る。そして、ボルト・ナツト１４とシユー５の拡
張方向と略直交する長穴１６とによりシユー５の
拡・縮と倍力部材１１の回転を可能にしている。 The booster member 11 is supported by the shoe 5 at two locations. That is, one location is connected to the other location by the pin 13.
The location is through the elongated hole 16 provided in the shoe 5.
They are each supported by bolts and nuts 14. The bolt/nut 14 and the elongated hole 16 substantially perpendicular to the direction of expansion of the shoe 5 allow the shoe 5 to expand and contract and the booster member 11 to rotate.
また、油圧シリンダ４とシユー５の反ピストン
側とは、シユー５の端部に形成した凹弧状１７又
は、凸弧状（図示せず）と、これと対応する油圧
シリンダ４側の凸弧状１８又は凹弧状（図示せ
ず）とを互に嵌合した係合部１９によつて回転可
能に支持されている。 Further, the anti-piston side of the hydraulic cylinder 4 and the shoe 5 refers to a concave arc shape 17 or a convex arc shape (not shown) formed at the end of the shoe 5 and a corresponding convex arc shape 18 or It is rotatably supported by an engaging portion 19 in which concave arc shapes (not shown) are fitted together.
なお、この係合部１９は前記した実施例以外
に、シユー５の端部に形成したゆるい凸弧状と、
第１の固定部２に固定された油圧シリンダ４の反
ピストン側に形成した端部平面とを互に当接し、
摺動かつ回転可能に支持しても良い。この発明
は、以上の如き構成である。次にその作用を説明
する。 In addition to the embodiments described above, this engaging portion 19 may have a loose convex arc shape formed at the end of the shoe 5,
The end flat surface formed on the opposite piston side of the hydraulic cylinder 4 fixed to the first fixed part 2 is brought into contact with each other,
It may be supported slidably and rotatably. This invention has the above configuration. Next, its effect will be explained.
油圧シリンダ４（作動装置）に油圧が送られる
とピストン９（作動子）が突出され、ロツド２３
の当り面１０を介して倍力部材１１の一端をシユ
ー拡張方向へ移動（回動）させる。 When hydraulic pressure is sent to the hydraulic cylinder 4 (actuating device), the piston 9 (actuating element) is projected, and the rod 23
One end of the boosting member 11 is moved (rotated) in the shoe expansion direction via the abutting surface 10.
このため倍力部材１１は当り部１２に当接した
他端を回転支点として回転するので、倍力部材１
１はピン１３を介してシユー５を拡張方向に変位
させる。 For this reason, the booster member 11 rotates with the other end in contact with the contact portion 12 as a rotational fulcrum, so the booster member 11
1 displaces the shoe 5 in the expansion direction via the pin 13.
この時、油圧シリンダ４に送られる圧油の油圧
及び油量が同一である場合、シユー５に装着した
引戻しバネ８1と８2の付勢力（バネ常数）は一方
を他方より大きくしている（差をつけている）た
め、係合部１９を支点としてモーメントの釣り合
いを考えると、係合部１９側に小さいバネ常数の
バネが装着され、油圧シリンダ４（ピストン９）
側に大きいバネ常数のバネが装着されている方の
シユー５と逆に、係合部１９側に大きいバネ常数
のバネが装着され、油圧シリンダ４（ピストン
９）側に小さいバネ常数のバネが装着されている
シユー５とでは、前方の方が後者に比較し引戻し
力が大きくなる。 At this time, if the oil pressure and oil amount of the pressure oil sent to the hydraulic cylinder 4 are the same, the biasing force (spring constant) of the pullback springs 8 1 and 8 2 attached to the shoe 5 is larger on one than the other. Therefore, considering the moment balance using the engaging part 19 as a fulcrum, a spring with a small spring constant is attached to the engaging part 19 side, and the hydraulic cylinder 4 (piston 9)
Contrary to the shoe 5 in which a spring with a large spring constant is attached to the side, a spring with a large spring constant is attached to the engaging part 19 side, and a spring with a small spring constant is attached to the hydraulic cylinder 4 (piston 9) side. With respect to the shoe 5 that is attached, the pullback force is greater at the front than at the latter.
従つて、シユー５をドラム２４方向に拡張する
場合には、逆にバネ８の引戻し力の小さい方が大
きい方に比較し拡張し易いから油圧シリンダ４に
同じ圧油を供給した場合、まず引戻し力の小さい
方のシユーが作動し、更に圧油の供給を続けると
他方のシユーが作動する。 Therefore, when expanding the shoe 5 in the direction of the drum 24, it is easier to expand the shoe 5 with a smaller pullback force of the spring 8 than with a larger pullback force. The shoe with the smaller force is activated, and if the pressure oil continues to be supplied, the other shoe is activated.
即ち、シユー５は同時に作動せず、まず一方の
シユーが作動した後、他方のシユーが作動するの
で一方のシユーのみが作動した後、圧油の供給を
中断すれば他方のシユーは作動しないから、所謂
半ブレーキ・半クラツチ操作を容易に行なうこと
ができる。 That is, the shoes 5 do not operate at the same time; one shoe operates first, and then the other shoe operates, so if only one shoe operates, and the supply of pressure oil is interrupted, the other shoe will not operate. , so-called half-brake/half-clutch operation can be easily performed.
以上の通り本発明によれば、引戻しバネのバネ
常数を変える或は、引戻しバネを非対称に装着す
るという極めて簡単な構成によりシユーの作動に
時間差をつけることが可能となりブレーキとして
使用する場合には急ブレーキの防止ができる。ま
たクラツチとして使用する場合は、半クラツチ操
作が容易に行なえる等の効果を有する。 As described above, according to the present invention, by changing the spring constant of the retraction spring or by installing the retraction spring asymmetrically, it is possible to add a time difference to the operation of the shoe, and when used as a brake, Can prevent sudden braking. Furthermore, when used as a clutch, it has the advantage of allowing easy half-clutch operation.
図は、本発明の一例を示す一部切載正面図であ
る。
１……固定部材、２，３……固定部、４……油
圧シリンダ、５……シユー、６……ライニング、
７……支持部、８……バネ、９……ピストン、１
０……当り面、１１……倍力部材、１２……当り
部、１３……ピン、１４……ボルト・ナツト、１
６……長穴、１７……凹弧状、１８……凸弧状、
１９……係合部、２３……ロツド、２４……ドラ
ム。
The figure is a partially cutaway front view showing an example of the present invention. 1...Fixing member, 2, 3...Fixing part, 4...Hydraulic cylinder, 5...Shu, 6...Lining,
7...Support part, 8...Spring, 9...Piston, 1
0...Abutting surface, 11...Boosting member, 12...Abutting part, 13...Pin, 14...Bolt/Nut, 1
6... Long hole, 17... Concave arc shape, 18... Convex arc shape,
19...engaging portion, 23...rod, 24...drum.
Claims (1)
ーと、該シユー端間に点対称に対向して設けられ
シユーの一端に作動子を当接した作動装置と、シ
ユーを反ドラム側に引戻す為に取付けられた複数
の引戻しバネと、少なくとも前記作動装置を取付
ける固定部材とからなるドラムブレーキ・クラツ
チにおいて前記引戻しバネのバネ力が一対のシユ
ーの作動子側の一端に対して不均等にかかるよう
にしたことを特徴とするドラムブレーキ・クラツ
チ装置。 ２ 複数本の引戻しバネを一対のシユー間に対称
に装着し、そのバネ常数を異ならしめた特許請求
の範囲第１項に記載の装置。 ３ 一本或は複数本の引戻しバネを一対のシユー
間に非対称に装着した特許請求の範囲第１項に記
載の装置。[Scope of Claims] 1. A pair of arc-shaped shoes placed symmetrically in a drum, an actuating device provided symmetrically between the ends of the shoes and having an actuator in contact with one end of the shoes, and a shoe. In a drum brake clutch consisting of a plurality of pullback springs attached to pull back the actuator toward the side opposite to the drum, and at least a fixed member to which the actuator is attached, the spring force of the pullback springs is applied to one end of the pair of shoes on the actuator side. A drum brake/clutch device characterized in that the clutch is applied unevenly. 2. The device according to claim 1, wherein a plurality of retraction springs are installed symmetrically between a pair of shoes and have different spring constants. 3. The device according to claim 1, wherein one or more pullback springs are installed asymmetrically between a pair of shoes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9666383A JPS59222629A (en) | 1983-05-31 | 1983-05-31 | Drum brake-clutch apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9666383A JPS59222629A (en) | 1983-05-31 | 1983-05-31 | Drum brake-clutch apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59222629A JPS59222629A (en) | 1984-12-14 |
| JPH0362930B2 true JPH0362930B2 (en) | 1991-09-27 |
Family
ID=14171054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9666383A Granted JPS59222629A (en) | 1983-05-31 | 1983-05-31 | Drum brake-clutch apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59222629A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD4079C1 (en) * | 2009-02-06 | 2011-07-31 | Сергей БУРЛАК | Device for the use of braking energy in vehicles |
| CN106351979A (en) * | 2016-08-24 | 2017-01-25 | 武汉船用机械有限责任公司 | Band clutch |
-
1983
- 1983-05-31 JP JP9666383A patent/JPS59222629A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59222629A (en) | 1984-12-14 |
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