JPH0412260Y2 - - Google Patents
Info
- Publication number
- JPH0412260Y2 JPH0412260Y2 JP1985169184U JP16918485U JPH0412260Y2 JP H0412260 Y2 JPH0412260 Y2 JP H0412260Y2 JP 1985169184 U JP1985169184 U JP 1985169184U JP 16918485 U JP16918485 U JP 16918485U JP H0412260 Y2 JPH0412260 Y2 JP H0412260Y2
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- web
- reinforcing metal
- drum
- vibration
- 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
Landscapes
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
イ 考案の目的
（産業上の利用分野）
この考案に係るドラムブレーキ用シユーは、自
動車の制動を行なうドラムブレーキに組込み、制
動時に車輪とともに回転するドラムの内周面にラ
イニングを押圧して、このライニングの外周面と
ドラムの内周面との間の摩擦により制動を行なう
のに利用する。[Detailed explanation of the invention] A. Purpose of the invention (industrial application field) The drum brake shoe according to this invention is incorporated into a drum brake for braking an automobile, and is attached to the inner circumferential surface of the drum that rotates together with the wheels during braking. The lining is pressed and the friction between the outer circumferential surface of the lining and the inner circumferential surface of the drum is used to perform braking.
（従来の技術）
自動車の制動に用いられるドラムブレーキは、
例えば第５図に示すように、車輪とともに回転す
るドラム１の内側に左右１対のシユー２，２を設
け、制動時には両シユー２，２のウエブ３，３の
一端が当接した油圧シリンダ５のピストン杆６，
６を左右に突出させて両シユー２，２を背板７上
の油圧シリンダ５と反対端に固定されたアンカ８
を中心として回動させつつ外方に押し出し、この
シユー２，２の外周に添着したライニング４，４
を前記ドラム１の内周面に強く押し付けて制動を
行なうように構成されている。(Prior art) Drum brakes used for braking automobiles are
For example, as shown in FIG. 5, a pair of left and right shoes 2, 2 is provided inside a drum 1 that rotates together with the wheels, and a hydraulic cylinder 5 is provided with one end of the webs 3, 3 of both shoes 2, 2 during braking. piston rod 6,
An anchor 8 is fixed to the opposite end of the hydraulic cylinder 5 on the back plate 7 so that both shoes 2, 2 are fixed to the opposite end of the hydraulic cylinder 5 on the back plate 7.
The linings 4, 4 attached to the outer periphery of the shoes 2, 2 are pushed out while rotating around the
is configured to strongly press against the inner circumferential surface of the drum 1 to perform braking.
ところで、上述のように構成され作用するドラ
ムブレーキに組込まれるシユー２は、制動時にド
ラム１の内周面とライニング４の外周面との摩擦
に伴つて細かく振動し、騒音を発生する。 Incidentally, the shoe 2 incorporated in the drum brake constructed and operated as described above vibrates minutely due to friction between the inner circumferential surface of the drum 1 and the outer circumferential surface of the lining 4 during braking, and generates noise.
ドラムブレーキの発生する騒音のうち、最も耳
障りなキー音と呼ばれる騒音（周波数1000〜4000
Hz）の発生原因は、シユーの共振であることが知
られている。 Among the noises generated by drum brakes, the most annoying noise is called the key sound (frequency 1000 to 4000).
Hz) is known to be caused by shoe resonance.
この共振を防止する手段として、実開昭54−
140186号公報に記載されたように、ブレーキシユ
ーの裏金とウエブとの間に補強金具を取付けた考
案がある。しかしながら、この考案は、シユーと
裏金との間に補強金具を取付けシユーの共振点を
高くして、キー音発生を避けようとするものであ
つて、最も有効な部分に補強金具を取付けること
を解明したものではない。 As a means to prevent this resonance,
As described in Publication No. 140186, there is an idea in which a reinforcing metal fitting is attached between the back metal of the brake shoe and the web. However, this idea aims to avoid the generation of key noise by attaching a reinforcing metal fitting between the shoe and the back metal to raise the resonance point of the shoe. It is not something that has been clarified.
又、実開昭57−131641号のマイクロフイルムに
は、ウエブに一端縁を取付けた摩擦板の他端縁を
裏金内面に当接させて、両者間の摩擦によりブレ
ーキシユーの振動を抑制する構造が示されている
が、この構造もシユーの振動の大きい部分の間を
金具で連結して振動を抑制しようとするものでは
ない。 Moreover, in the micro film of Utility Model Application Publication No. 57-131641, one edge of a friction plate is attached to the web, and the other edge of the friction plate is brought into contact with the inner surface of the backing metal, and the vibration between the two is suppressed by the friction between the two. Although this structure is shown, this structure does not attempt to suppress vibration by connecting parts of the shoe that vibrate strongly with metal fittings.
（考案が解決しようとする問題点）
このように従来のシユーは、キー音発生時のシ
ユーの振動状態を把握して補強金具の取付け位置
を決めるものではないから、最も有効にキー音を
防止するシユーを構成するための技術的思想にお
いて、不十分であり、事実、このような従来のシ
ユーは、キー音を発生し易かつた。(Problem to be solved by the invention) In this way, the conventional shoe does not determine the installation position of the reinforcing metal fittings by determining the vibration state of the shoe when a key sound occurs, so it is the most effective way to prevent key sound. The technical concept for configuring the conventional show is insufficient, and in fact, such a conventional show tends to generate key sounds.
ロ 考案の構成
（問題点を解決するための手段）
この考案は、ウエブと裏金とを、結合したブレ
ーキシユーの振動状態を探究し、その結果を利用
して、振幅が大きく位相が逆の部分を補強金具で
連結して振動を抑制し、キー音発生を効果的に防
止するようにしたものである。B. Structure of the invention (means for solving problems) This invention investigates the vibration state of a brake shoe that combines a web and a backing metal, and utilizes the results to The parts are connected with reinforcing metal fittings to suppress vibration and effectively prevent key noise.
本考案者等の研究によると、共振を起している
ときのシユーの振動モードは、第２図のようにな
つている。第２図において＋、−は振動の位相が
逆であることを示し、長円で囲んだ数字は、最大
振幅（ウエブ３の中央部が最大である）を100と
したときのその部分の振幅の大きさを示してい
る。この結果で見ると、ウエブ３の中央部分Ａの
振幅（100）が最も大きく、裏金１０の両端から
その長さの1/4の部分Ｂの４ケ所の振幅（97.3〜
98.8）が次に大きく、ほぼＡ部分と同等である。
これらの振動は、第２図に＋、−で示すように互
いに逆位相になつている。 According to research by the inventors of the present invention, the vibration mode of the shoe when it resonates is as shown in Figure 2. In Figure 2, + and - indicate that the phase of vibration is opposite, and the numbers enclosed in an oval indicate the amplitude of that part when the maximum amplitude (maximum at the center of web 3) is 100. shows the size of Looking at these results, the amplitude (100) at the center part A of the web 3 is the largest, and the amplitude (97.3~
98.8) is the next largest and is almost equal to part A.
These vibrations are in opposite phases to each other, as shown by + and - in FIG.
そこで本考案は、第２図のように位置が明確に
なつた逆位相、最大振幅の部分を補強金具で連結
して、キー音発生のないドラムブレーキ用シユー
を得たものである。 Therefore, in the present invention, as shown in FIG. 2, the clearly located portions of opposite phase and maximum amplitude are connected with reinforcing metal fittings to obtain a shoe for a drum brake that does not generate a key sound.
（作用）
ブレーキシユーにおいて振幅が最も大きく、位
相が逆の部分を丈夫な補強金具で連結するから、
裏金、ウエブの振動が効果的に抑制されるので、
キー音発生が防止できる。(Function) The parts of the brake shoe where the amplitude is the largest and the phase is opposite are connected with strong reinforcing metal fittings.
Vibration of the back metal and web is effectively suppressed, so
Key sound generation can be prevented.
（実施例）
第１図は本考案により構成したシユーの実施例
を示す斜視図である。(Embodiment) FIG. 1 is a perspective view showing an embodiment of a shoe constructed according to the present invention.
ウエブ３の振幅の大きな中央部分Ａと、裏金２
の振幅が大きい、端部からの長さの1/4の部分Ｂ
と（Ａ，Ｂは第２図に示す）とを、Ｖ形に折曲げ
た補強金具９で連結する。この連結には、溶接、
鋲着、ねじ止め等の通常の手段が利用できる。 The central part A of the web 3 with a large amplitude and the back metal 2
Part B of 1/4 of the length from the end where the amplitude is large
(A and B are shown in FIG. 2) are connected by a reinforcing metal fitting 9 bent into a V shape. This connection requires welding,
Conventional means such as riveting, screwing, etc. can be used.
第１図には補強金具の三つの態様を一つの図面
内に示しており、基部をウエブ３にねじ止めした
Ｖ形の一辺ａのように裏金１０に密着させても、
他の辺９ｂのように先端のみを裏金１０に結合
し、裏金との間に隙間を形成したものであつて
も、また第三の辺９ｃのように、辺９ｃの端部が
裏金１０の外側縁に達しなくても裏金の半幅の60
％以上外側縁寄りになつていれば、効果がある。
また補強金具９の基部とウエブ３との取付け部分
は、ウエブ３の中央のＡ位置に厳密に一致しなく
てもよく、ウエブの一端からその長さの40〜60％
の位置ならば効果があり、補強金具の各辺の先端
は、裏金の一端からその長さの20〜35％の位置な
らば効果がある。 FIG. 1 shows three embodiments of the reinforcing metal fitting in one drawing.
Even if only the tip is joined to the back metal 10 like the other side 9b and a gap is formed between the back metal and the back metal, the end of the side 9c is connected to the back metal 10 like the third side 9c. 60 of the half width of the back metal even if it does not reach the outer edge
If it is more than % closer to the outer edge, it will be effective.
Also, the attachment part between the base of the reinforcing metal fitting 9 and the web 3 does not have to be exactly aligned with the center A position of the web 3, and is 40 to 60% of the length from one end of the web.
It is effective if the end of each side of the reinforcing metal is located 20 to 35% of its length from one end of the backing metal.
このように、補強金具９をウエブと裏金との振
動の大きい部分に固定して取付けると、第３図に
略示するように、振動時に互に近づく側のウエブ
３と裏金１０とを結合する辺９ｂ（他の辺９ａ，
９ｃでも同様）には、圧縮内部応力F1が発生し
てこの接近を阻み、振動時に互に離れる側のウエ
ブと裏金とを結合する辺９′ｂには、引張り内部
応力F2が発生して両者の離れるのを阻む。この
内部応力F1、F2は、シユーの振動と共に補強金
具の辺９ａ，９′ｂに交互に発生する。これによ
り、シユーの振動は強く抑制される。 In this way, when the reinforcing metal fitting 9 is fixed and attached to the part of the web and the backing metal that vibrates strongly, as shown schematically in FIG. Side 9b (other side 9a,
9c), a compressive internal stress F 1 is generated to prevent this approach, and a tensile internal stress F 2 is generated on the side 9'b that connects the web and backing metal, which separate from each other during vibration. to prevent the two from leaving. These internal stresses F 1 and F 2 are generated alternately on the sides 9a and 9'b of the reinforcing metal fitting together with the vibration of the shoe. Thereby, the vibration of the shoe is strongly suppressed.
第４図は本考案によるシユーと補強金具のない
従来のシユーとの振動特性を比較した線図で、実
線１１は本考案のシユーの、破線１２は従来のシ
ユーの各特性を示す。本考案のシユーは、従来の
シユーに比べて2000〜4000Hzの範囲で約18dBの
イナータンスの減少があつた。 FIG. 4 is a diagram comparing the vibration characteristics of the shoe according to the present invention and a conventional shoe without reinforcing metal fittings, where the solid line 11 shows the characteristics of the shoe of the present invention and the broken line 12 shows the characteristics of the conventional shoe. The shoe of the present invention had an inertance reduction of about 18 dB in the range of 2000 to 4000 Hz compared to the conventional shoe.
ハ 考案の効果
以上のように、本考案により振幅が大きく位相
が逆の裏金１０とウエブ３とのＡ部分、Ｂ部分を
含む前記した振動の大きい範囲を補強金具９で連
結すると、第４図のように、2000〜4000Hzでイナ
ータンスを減少させてキー音の発生を防止するこ
とができて、自動車運転を快適にすることができ
る。C. Effect of the invention As described above, according to the invention, when the above-mentioned range of large vibrations including parts A and B of the back metal 10 and the web 3, which have large amplitudes and are opposite in phase, are connected by the reinforcing metal fitting 9, as shown in FIG. By reducing the inertance between 2000 and 4000 Hz, it is possible to prevent the occurrence of key noise and make driving a car more comfortable.
第１図は本考案により補強金具を取付けたシユ
ーの実施例を示す斜視図、第２図は振動モードを
記入した従来のシユーの斜視図、第３図はシユー
の振動と補強金具の作用とを示す第１図のａ−ａ
線に沿うシユー断面の略図で、一方の辺は、辺９
ａの代りに辺９ｂと同形の辺９′ｂで示している。
第４図は本考案のシユーと従来のシユーとの振動
特性を示す線図、第５図は一般のドラムブレーキ
を示す正面図である。
１……ドラム、２……シユー、３……ウエブ、
４……ライニング、５……油圧シリンダ、６……
ピストン杆、７……背板、８……アンカ、９……
補強金具、９ａ，９ｂ，９ｃ……Ｖ形の辺、１０
……裏金、１１……実線、１２……破線。
Fig. 1 is a perspective view showing an embodiment of a shoe with reinforcing metal fittings attached according to the present invention, Fig. 2 is a perspective view of a conventional shoe with vibration modes indicated, and Fig. 3 shows the vibration of the shoe and the action of the reinforcing metal fittings. a-a in Figure 1 showing
A schematic diagram of the Shu section along the line, one side being side 9
In place of a, a side 9'b having the same shape as the side 9b is shown.
FIG. 4 is a diagram showing the vibration characteristics of the shoe of the present invention and a conventional shoe, and FIG. 5 is a front view showing a general drum brake. 1...drum, 2...show, 3...web,
4... Lining, 5... Hydraulic cylinder, 6...
Piston rod, 7... Back plate, 8... Anchor, 9...
Reinforcement fittings, 9a, 9b, 9c...V-shaped sides, 10
...Secret money, 11...solid line, 12...broken line.
Claims (1)
製のウエブの外周に、円弧形に弯曲させた裏金の
内周面中央部を固定し、この裏金の外周面にライ
ニングを添着して成るドラムブレーキ用シユーに
於いて、上記ウエブのほぼ中央部分に補強金具の
基端部を固定し、基端部から放射状に延びる補強
金具の先端部を上記裏金の内周面に固定したこと
を特徴とするドラムブレーキ用シユー。 The center part of the inner circumferential surface of a back metal plate curved in an arc shape is fixed to the outer periphery of a web made of a thick metal plate whose outer circumferential edge is arc-shaped and the whole is approximately crescent-shaped, and a lining is attached to the outer circumferential surface of this back metal plate. In the shoe for a drum brake, the base end of the reinforcing metal fitting is fixed to approximately the center of the web, and the distal end of the reinforcing metal fitting radially extending from the base end is fixed to the inner peripheral surface of the backing metal. A shoe for drum brakes that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985169184U JPH0412260Y2 (en) | 1985-11-05 | 1985-11-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985169184U JPH0412260Y2 (en) | 1985-11-05 | 1985-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6277333U JPS6277333U (en) | 1987-05-18 |
| JPH0412260Y2 true JPH0412260Y2 (en) | 1992-03-25 |
Family
ID=31102753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985169184U Expired JPH0412260Y2 (en) | 1985-11-05 | 1985-11-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412260Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2694903B2 (en) * | 1988-08-10 | 1997-12-24 | ヤマハ発動機株式会社 | Drum brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6210500Y2 (en) * | 1981-02-10 | 1987-03-12 |
-
1985
- 1985-11-05 JP JP1985169184U patent/JPH0412260Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6277333U (en) | 1987-05-18 |
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