JPH0547303Y2 - - Google Patents
Info
- Publication number
- JPH0547303Y2 JPH0547303Y2 JP6174789U JP6174789U JPH0547303Y2 JP H0547303 Y2 JPH0547303 Y2 JP H0547303Y2 JP 6174789 U JP6174789 U JP 6174789U JP 6174789 U JP6174789 U JP 6174789U JP H0547303 Y2 JPH0547303 Y2 JP H0547303Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressing member
- brake
- return spring
- recess
- brake case
- 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 - Lifetime
Links
- 238000003825 pressing Methods 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000003754 machining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は耕耘機、小型トラクタなど小型農機
用として好適な転舵ブレーキなどに用いられる摩
擦ブレーキに関するものであり、特に、摩擦ブレ
ーキの制動および解除作動のためボールカム機構
を用いるものに好適な戻しバネの取り付け構造に
関する。[Detailed description of the invention] [Field of industrial application] This invention relates to a friction brake used as a steering brake suitable for small agricultural machines such as power tillers and small tractors. The present invention relates to a return spring mounting structure suitable for a device that uses a ball cam mechanism for release operation.
一般に摩擦ブレーキＦは第２図で示すように、
受圧部材Ａと押圧部材Ｂとの間に伝動軸Ｃに支持
した環状の摩擦板Ｄを配し、両部材Ａ，Ｂによつ
て摩擦板Ｄを挟圧して伝動軸Ｃを制止するよう構
成されている。そして、それら摩擦ブレーキを制
動および解除する操作のためボールカム機構Ｅを
用いることが知られている。なお、ボールカム機
構Ｅは対向面にブレーキケースその他、カム面を
備えた支持部材Ｇと前記押圧部材Ｂの背面との間
に鋼球Ｈを介在させたものである。
Generally, the friction brake F is as shown in Fig. 2.
An annular friction plate D supported on a transmission shaft C is disposed between a pressure receiving member A and a pressing member B, and the friction plate D is compressed by both members A and B to stop the transmission shaft C. ing. It is known that a ball cam mechanism E is used for braking and releasing the friction brakes. The ball cam mechanism E has a steel ball H interposed between a supporting member G having a brake case and other cam surfaces on opposing surfaces and the back surface of the pressing member B.
そして、支持部材Ｇと押圧部材Ｂとの間は、分
離して鋼球Ｈが脱落しないようにコイルバネから
なる戻しバネＪで互いに連結してある。 The supporting member G and the pressing member B are connected to each other by a return spring J made of a coil spring so that the steel ball H does not separate and fall off.
この場合、両部材Ｇ，Ｂと戻しバネＪとの連結
手段として、戻しばねＪの端部を丸く屈曲させ、
且つ、その屈曲させた部分を前記両部材Ｇ，Ｂに
穿設した小孔Ｋに挿通して行つている（例えば、
特開昭63−38726号公報）が、そのような小孔Ｋ
が設けにくいときは、少なくとも一方の部材にボ
ルトＬにより円板Ｍを取り付け、その円板Ｍに設
けた小孔Ｋに戻しバネＪの端部を挿通し固定して
いる。 In this case, as a means of connecting both members G, B and the return spring J, the end of the return spring J is bent roundly,
In addition, the bent portion is inserted into a small hole K made in both members G and B (for example,
Japanese Patent Application Laid-Open No. 63-38726) discloses such a small hole K.
If it is difficult to provide a disc M, a disc M is attached to at least one member with a bolt L, and the end of the return spring J is inserted and fixed through a small hole K provided in the disc M.
しかしながら、摩擦ブレーキの前記戻しバネＪ
を、連結するための小孔Ｋを支持部材Ｇのような
大型の部品に製造段階で設けること、すなわち、
重量の大きいケース自体を鋳造する際に鋳抜いた
り、機械加工によつて設けるのは容易でない。
However, the return spring J of the friction brake
, a small hole K for connecting them is provided in a large component such as the support member G at the manufacturing stage, that is,
It is not easy to provide it by punching or machining when casting the heavy case itself.
他方、前記したように、支持部材Ｇに前記円板
Ｍを後付けで取り付けるのも、また、部品の点数
が無用に増して組立工数の増大を招く不具合を生
じる。 On the other hand, as described above, attaching the disc M to the support member G afterward also causes a problem in that the number of parts increases unnecessarily and the number of assembly steps increases.
この考案は上記不具合を除去し、構成部品の製
造を容易にすると共に、それらを組み立てる際の
組立工数が増大するのを可及的に回避し廉価な摩
擦ブレーキを得ることを目的とするもので、制動
機ケース２の軸受孔２ａ内に軸受４ａを介して伝
動軸４を支持させ、その伝動軸４に支持させた環
状の摩擦板４ｂを前記制動機ケース２と押圧部材
６との間に配置し、前記押圧部材６の背面にボー
ルカム機構５を設け、そのボールカム機構５を押
圧部材６と制動機ケース２との対向面に設けたカ
ム溝５ａと、それらの間に介装した硬球５ｂで構
成し、押圧部材６と制動機ケース２との間に戻し
バネ８を張設した摩擦ブレーキ１において、軸受
孔２ａの縁部に凹部２ｄを設け、その凹部２ｄと
交差してサークリツプ９を設けると共に、前記戻
しばね８の一端を押圧部材６に設けた係止孔６ａ
と、また、他端を前記凹部２ｄ内においてサーク
リツプ９とに係止した点に特徴がある。
The purpose of this invention is to eliminate the above-mentioned problems, facilitate the manufacture of component parts, and avoid as much as possible the increase in assembly man-hours when assembling them, thereby obtaining an inexpensive friction brake. A transmission shaft 4 is supported in the bearing hole 2a of the brake case 2 through a bearing 4a, and an annular friction plate 4b supported by the transmission shaft 4 is placed between the brake case 2 and the pressing member 6. A ball cam mechanism 5 is provided on the back surface of the pressing member 6, a cam groove 5a is provided on the opposing surface of the pressing member 6 and the brake case 2, and a hard ball 5b is interposed between them. In the friction brake 1, a recess 2d is provided at the edge of the bearing hole 2a, and a circlip 9 intersects with the recess 2d. A locking hole 6a is provided, and one end of the return spring 8 is provided in the pressing member 6.
Also, it is characterized in that the other end is locked to the circlip 9 within the recess 2d.
制動機ケース２には軸受孔２ａを利用してサー
クリツプ９が設けられ、且つ軸受孔２ａの縁を利
用して凹部２ｄが設けられる。凹部２ｄとサーク
リツプ９とが交差するところでは、凹部２ｄのた
めサークリツプ９を支持する円周溝２ｂがないか
ら、サークリツプ９が軸受孔２ａの壁面から浮き
上がり、その周囲が空間になる。戻しばね８の一
端はその空間を通してサークリツプ９に連結され
る。
A circlip 9 is provided in the brake case 2 using the bearing hole 2a, and a recess 2d is provided using the edge of the bearing hole 2a. At the intersection of the recess 2d and the circlip 9, since there is no circumferential groove 2b to support the circlip 9 due to the recess 2d, the circlip 9 rises from the wall surface of the bearing hole 2a, creating a space around it. One end of the return spring 8 is connected to the circlip 9 through the space.
以下、図示の実施例によつてこの考案を説明す
ると、第１図中、１は転舵ブレーキにおいて具現
化された摩擦ブレーキであり、制動機ケース２と
その一側を覆う制動機カバー３とからなる制動機
室内に形成されている。すなわち、転舵操作時に
両ケース２，３間に亘つて設けられた左右いずれ
かの伝動軸４が制止されるようになつている。
Hereinafter, this invention will be explained with reference to the illustrated embodiment. In FIG. 1, 1 is a friction brake embodied in a steering brake, and includes a brake case 2 and a brake cover 3 covering one side thereof. It is formed inside the brake chamber consisting of. That is, at the time of steering operation, either the left or right transmission shaft 4 provided between the cases 2 and 3 is stopped.
伝動軸４は移動農機の駆動車軸であり、または
駆動車軸に連結されており、軸受４ａを介して制
動機ケース２に設けた軸受孔２ａに支持されてい
る。その外周面には二枚の摩擦板４ｂ，４ｂがス
プライン係合されて支持されており、それら二枚
の摩擦板４ｂ，４ｂは制動機カバー３に設けた受
圧面３ａとボールカム機構５の一部をなす押圧部
材６に形成された押圧面６ｂとにより挟圧され制
止される。 The transmission shaft 4 is a drive axle of a mobile agricultural machine, or is connected to a drive axle, and is supported in a bearing hole 2a provided in the brake case 2 via a bearing 4a. Two friction plates 4b, 4b are spline-engaged and supported on its outer peripheral surface, and these two friction plates 4b, 4b are connected to the pressure receiving surface 3a provided on the brake machine cover 3 and the ball cam mechanism 5. It is pinched and stopped by a pressing surface 6b formed on a pressing member 6 forming a part.
なお、４ｃは制動面積を増すべく前記二枚の摩
擦板４ｂ，４ｂの間に配された中間板であり、そ
の外周部において、後述する作動軸７ａに係止さ
れて回転のみが阻止され、軸方向には移動可能と
なつている。 Note that 4c is an intermediate plate disposed between the two friction plates 4b, 4b in order to increase the braking area, and its outer peripheral portion is locked to an operating shaft 7a, which will be described later, to prevent only rotation. It is movable in the axial direction.
ボールカム機構５は制動機ケース２と押圧部材
６に設けられたカム溝５ａ，５ａおよび、そのカ
ム溝５ａ，５ａに係合した鋼球からなる硬球５ｂ
とで構成されている。そして、両カム溝５ａは押
圧部材６が若干の角度だけ回動したとき、同時に
摩擦板４ｂ，４ｂへ向けて軸方向へ移動させるた
めの傾斜面が形成されている。 The ball cam mechanism 5 includes cam grooves 5a, 5a provided in the brake case 2 and the pressing member 6, and hard balls 5b made of steel balls engaged with the cam grooves 5a, 5a.
It is made up of. Both cam grooves 5a are formed with inclined surfaces for simultaneously moving the pressing member 6 in the axial direction toward the friction plates 4b, 4b when the pressing member 6 rotates by a certain angle.
７は押圧部材６を所定の角度だけ回動させため
の作動機構である。作動機構７は制動機カバー３
に軸支され転舵ハンドルを有する作動軸７ａを含
む。作動軸７ａは先端部が切除されてカマボコ形
の断面を持つカムをなし、そのカムが押圧部材６
の外周に設けた凹溝に係合してカム機構７ｂを形
成している。よつて、作動軸７ａが所定の角度だ
け回動すると押圧部材６もカム機構７ｂにより所
定の角度だけ回動するようになつている。なお、
こゝまでの構成は従来公知のものと大差はない。 7 is an operating mechanism for rotating the pressing member 6 by a predetermined angle. The operating mechanism 7 is the brake cover 3
It includes an actuating shaft 7a which is supported by the actuating shaft 7a and has a steering handle. The tip of the operating shaft 7a is cut off to form a cam with a semicylindrical cross section, and the cam is used as the pressing member 6.
The cam mechanism 7b is formed by engaging with a groove provided on the outer periphery of the cam mechanism 7b. Therefore, when the operating shaft 7a rotates by a predetermined angle, the pressing member 6 also rotates by a predetermined angle by the cam mechanism 7b. In addition,
The configuration up to this point is not much different from conventionally known configurations.
前記押圧部材６と制動機ケース２との間は分離
可能に、且つ、簡単に分離しないように戻しバネ
８が張設してある。戻しバネ８はコイルばねから
なり、その一端は押圧部材６に設けた係止孔６ａ
に連結され、他端は前記軸受孔２ａに設けた円周
溝２ｂに嵌めたサークリツプ９に連結されてい
る。すなわち、戻しバネ８の端部は弧状にカール
させてあり、軸受孔２ａの縁に設けた凹部２ｄ内
においてサークリツプ９の素線に直接に巻きつけ
られている。 A return spring 8 is stretched between the pressing member 6 and the brake case 2 so that they can be separated and not easily separated. The return spring 8 is made of a coil spring, and one end thereof is connected to a locking hole 6a provided in the pressing member 6.
The other end is connected to a circlip 9 fitted in a circumferential groove 2b provided in the bearing hole 2a. That is, the end of the return spring 8 is curled into an arc shape, and is directly wound around the wire of the circlip 9 within a recess 2d provided at the edge of the bearing hole 2a.
次に、この実施例による摩擦ブレーキの作動を
説明する。まず、転舵ブレーキ１は小型農機の進
行方向を変えるため、左右の駆動車軸にそれぞれ
取り付けられている。そして、図示してない操向
ハンドルが転向操作されると、転進側の転舵ブレ
ーキ１が作動し、伝動軸４が制動される。 Next, the operation of the friction brake according to this embodiment will be explained. First, the steering brakes 1 are attached to the left and right drive axles, respectively, in order to change the traveling direction of the small agricultural machine. Then, when a steering handle (not shown) is operated to turn, the steering brake 1 on the turning side is activated, and the transmission shaft 4 is braked.
操向ハンドルが操作されると、作動軸７ａがそ
れに連動して僅かの角度だけ回動し、同時に押圧
部材６も回動する。よつて、ボールカム機構５も
動作し、押圧部材６自体が軸方向に前進して摩擦
板４ｂ，４ｂを受圧面３ａへ押し付けて制動する
ので、伝動軸４が制動されて減速しあるいは停止
する。 When the steering handle is operated, the operating shaft 7a rotates by a small angle in conjunction with the operation, and the pressing member 6 also rotates at the same time. Therefore, the ball cam mechanism 5 also operates, and the pressing member 6 itself moves forward in the axial direction to press the friction plates 4b, 4b against the pressure receiving surface 3a and brake, so the transmission shaft 4 is braked and decelerated or stopped.
制動の解除は、以上と全く逆の過程を経てなさ
れるが、その際、押圧部材６は戻しバネ８によつ
て常に制動機ケース２へ向けて引き寄せられてお
り、潤滑油の粘着力その他により押圧部材６が摩
擦板に伴われないよう確実に分離するので、いわ
ゆる引きずりを防止し、制動の解除が確実になさ
れると共に、ボールカム機構５を構成する制動機
ケース２と押圧板をなす押圧部材６、および硬球
５ｂとがばらばらに分離するのを防止する。 The brake is released through a process completely opposite to that described above, but at this time, the pressing member 6 is always drawn toward the brake case 2 by the return spring 8, and due to the adhesive force of the lubricating oil and other factors. Since the pressing member 6 is reliably separated from the friction plate, so-called dragging is prevented, and the brake is reliably released. 6 and the hard ball 5b are prevented from separating into pieces.
この考案によれば、以上のように、戻しバネ８
の端部を制動機ケースに係止するため、伝動軸４
の軸受孔２ａを利用して、その縁部に凹部２ｄと
サークリツプ９のための円周溝２ｂとを設ける簡
単な構造により、戻しバネ８の取り付けを簡単に
行い得る効果がある。
According to this invention, as described above, the return spring 8
In order to lock the end of the transmission shaft 4 to the brake case,
A simple structure in which the recess 2d and the circumferential groove 2b for the circlip 9 are provided on the edge of the bearing hole 2a has the effect of making it possible to easily attach the return spring 8.
そして、従来のように、大型の鋳物部品である
制動機ケース２に戻しバネ８を連結されるための
小さな突起を鋳出したり、それに小孔を開けるな
ど面倒な加工が省略できる。また、サークリツプ
９のための円周溝２ｂの加工は軸受孔２ａの加工
のため工作機械に取り付けたとき、同時に加工す
るのが可能で特別の工作機械や着脱のための工程
を特設する必要がなく、生産設備を簡単にでき
る。 Further, it is possible to omit troublesome machining such as casting out a small protrusion for connecting the return spring 8 to the brake case case 2, which is a large cast part, or drilling a small hole in the protrusion, which is conventionally required. Furthermore, the machining of the circumferential groove 2b for the circlip 9 can be done at the same time as the machining of the bearing hole 2a when it is installed on a machine tool, so there is no need to install a special machine tool or a special process for attachment and detachment. production equipment can be easily installed.
さらに、取付け円板ＭをボルトＬで止める場合
のように、制動機ケースにボルト孔の多数を穿設
する機械加工をしたり、工数の多い組立作業を行
う必要がなく作業工数の増加を免れるなど、摩擦
ブレーキの製造上、著大な効果を奏する。 Furthermore, unlike when fixing the mounting disc M with bolts L, there is no need to perform machining to drill multiple bolt holes in the brake case, or to perform assembly work that requires a lot of man-hours, thereby avoiding an increase in the number of work man-hours. This has a significant effect on the production of friction brakes.
図面はこの考案の一実施例を示すもので、第１
図はブレーキの断面図、第２図は従来のブレーキ
の構造を示す第１図相当の断面図である。
２……制動機ケース、２ａ……軸受孔、２ｄ…
…凹部、３……制動機カバー、５……ボールカム
機構、５ａ……カム溝、６……押圧部材、７ｂ…
…カム機構、８……戻しバネ、９……サークリツ
プ。
The drawing shows one embodiment of this invention.
The figure is a sectional view of the brake, and FIG. 2 is a sectional view equivalent to FIG. 1 showing the structure of a conventional brake. 2...Brake case, 2a...Bearing hole, 2d...
... Recessed portion, 3 ... Brake machine cover, 5 ... Ball cam mechanism, 5a ... Cam groove, 6 ... Pressing member, 7b ...
...Cam mechanism, 8...Return spring, 9...Circlip.
Claims (1)
して伝動軸４を支持させ、その伝動軸４に支持さ
せた環状の摩擦板４ｂを前期制動機ケース２と押
圧部材６との間に配置し、その押圧部材６の背面
にボールカム機構５を設け、そのボールカム機構
５を押圧部材６と制動機ケース２との対向面に設
けたカム溝５ａと、それらカム溝５ａの間に介装
した硬球５ｂで構成すると共に、それら押圧部材
６と制動機ケース２との間に戻しバネ８を張設し
た摩擦ブレーキ１において、前記軸受孔２ａの縁
部に凹部２ｄを設け、その凹部２ｄと交差してサ
ークリツプ９を設けると共に、前記戻しばね８の
一端を押圧部材６に設けた係止孔６ａと、また、
他端を前記凹部２ｄ内においてサークリツプ９と
に係止してなる戻しバネ構造。 A transmission shaft 4 is supported in the bearing hole 2a of the brake case 2 via a bearing 4a, and an annular friction plate 4b supported by the transmission shaft 4 is disposed between the former brake case 2 and the pressing member 6. A ball cam mechanism 5 is provided on the back surface of the pressing member 6, and the ball cam mechanism 5 is interposed between the cam grooves 5a provided on the facing surfaces of the pressing member 6 and the brake case 2, and the cam grooves 5a. In the friction brake 1, which is composed of hard balls 5b and has a return spring 8 stretched between the pressing member 6 and the brake case 2, a recess 2d is provided at the edge of the bearing hole 2a, and a recess 2d intersects with the recess 2d. a locking hole 6a provided in the pressing member 6 with one end of the return spring 8;
A return spring structure in which the other end is engaged with the circlip 9 within the recess 2d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6174789U JPH0547303Y2 (en) | 1989-05-26 | 1989-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6174789U JPH0547303Y2 (en) | 1989-05-26 | 1989-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH031334U JPH031334U (en) | 1991-01-09 |
| JPH0547303Y2 true JPH0547303Y2 (en) | 1993-12-13 |
Family
ID=31590269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6174789U Expired - Lifetime JPH0547303Y2 (en) | 1989-05-26 | 1989-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0547303Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4953995B2 (en) * | 2007-09-06 | 2012-06-13 | 中国電力株式会社 | Clinker processing equipment |
| JP4850160B2 (en) * | 2007-09-28 | 2012-01-11 | 中国電力株式会社 | Clinker hopper ash gate opening and closing device |
-
1989
- 1989-05-26 JP JP6174789U patent/JPH0547303Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH031334U (en) | 1991-01-09 |
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