JP6761305B2 - Vehicle drum brakes - Google Patents

Vehicle drum brakes Download PDF

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JP6761305B2
JP6761305B2 JP2016167504A JP2016167504A JP6761305B2 JP 6761305 B2 JP6761305 B2 JP 6761305B2 JP 2016167504 A JP2016167504 A JP 2016167504A JP 2016167504 A JP2016167504 A JP 2016167504A JP 6761305 B2 JP6761305 B2 JP 6761305B2
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back plate
brake
attached
outer peripheral
vehicle body
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JP2018035828A (en
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小川　裕之
裕之 小川
明良 平塚
明良 平塚
靖 小林
靖 小林
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Honda Motor Co Ltd
Nissin Kogyo Co Ltd
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Honda Motor Co Ltd
Nissin Kogyo Co Ltd
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Priority to JP2016167504A priority Critical patent/JP6761305B2/en
Priority to CN201710762735.1A priority patent/CN107781324A/en
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    • 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
    • F16D51/20—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 extending in opposite directions from their pivots
    • F16D51/24—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 extending in opposite directions from their pivots fluid actuated
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
    • F16D65/09—Pivots or supporting members therefor

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

本発明は、車両用ドラムブレーキに関し、詳しくは、ブレーキドラムに摺接するブレーキシューを拡縮自在に収容するバックプレートの補強構造に関する。 The present invention relates to a vehicle drum brake, and more particularly to a back plate reinforcing structure for accommodating a brake shoe that is in sliding contact with a brake drum.

従来、車両用ドラムブレーキでは、バックプレートを比較的薄い板材で形成し、強度を必要とするアクスル挿通孔の周囲や、ブレーキシューが当接するアンカー部材の取付位置に対応する部分に補強用の押当て板を取り付けたものや（例えば、特許文献１参照。）、バックプレートの外周縁部に円環状の補強部材を取り付けたもの（例えば、特許文献２参照。）があった。 Conventionally, in vehicle drum brakes, the back plate is made of a relatively thin plate material, and a reinforcing pusher is used around the axle insertion hole, which requires strength, and the part corresponding to the mounting position of the anchor member with which the brake shoe abuts. Some had a backing plate attached (see, for example, Patent Document 1), and some had an annular reinforcing member attached to the outer peripheral edge of the back plate (see, for example, Patent Document 2).

特開２００３−１６６５６７号公報Japanese Unexamined Patent Publication No. 2003-166567 実開昭６０−１８０８２９号公報Jikkai Sho 60-180829

しかし、上述の特許文献１のものでは、バックプレートがアクスルの端部に取り付けられる際に、アクスル挿通孔の周囲にはベアリング等の部品が配置されていることから、取付スペースの制約を受け、取付スペースに応じて押当て板の形状や肉厚を設定しなければならなかった。また、上述の特許文献２のものでは、バックプレートの外周部全体に補強部材が取り付けられていることから、重量が嵩んでいた。 However, in the above-mentioned Patent Document 1, when the back plate is attached to the end of the axle, parts such as bearings are arranged around the axle insertion hole, so that the attachment space is restricted. The shape and wall thickness of the pressing plate had to be set according to the mounting space. Further, in the above-mentioned Patent Document 2, since the reinforcing member is attached to the entire outer peripheral portion of the back plate, the weight is increased.

そこで本発明は、取付スペースの制約を受けることなく、極力重量を増大させずにバックプレートを補強できる車両用ドラムブレーキを提供することを目的としている。 Therefore, an object of the present invention is to provide a vehicle drum brake capable of reinforcing the back plate without increasing the weight as much as possible without being restricted by the mounting space.

上記目的を達成するため、本発明の車両用ドラムブレーキは、バックプレートの内部に、ブレーキドラムに摺接するブレーキシューを拡縮自在に収容するとともに、該ブレーキシューをバックプレート側に付勢するシューホールド機構を備えた車両用ドラムブレーキにおいて、前記バックプレートの外周縁の車体に取り付けた状態で上部となる部分を除いた位置のみに、フランジ状の補強板を取り付け、前記補強板は、前記バックプレートの車体側となる外面に、前記バックプレートの外周縁に沿って取り付けられる取付部と、該取付部の外周縁から車体側に突出する突出部を備えていることを特徴としている。 In order to achieve the above object, the vehicle drum brake of the present invention accommodates a brake shoe that is in sliding contact with the brake drum inside the back plate so as to be expandable and contractible, and a shoe hold that urges the brake shoe toward the back plate side. In a vehicle drum brake equipped with a mechanism, a flange-shaped reinforcing plate is attached only at a position excluding the upper portion when attached to the vehicle body on the outer peripheral edge of the back plate, and the reinforcing plate is the back plate. The outer surface of the back plate is provided with a mounting portion attached along the outer peripheral edge of the back plate and a protruding portion protruding from the outer peripheral edge of the mounting portion toward the vehicle body side .

また、前記補強板は、車体に取り付けた状態で、前記バックプレートの少なくとも前記シューホールド機構よりも下方となる位置に設けられると好適である。 Further, the reinforcing plate is in a state attached to the vehicle body, it is preferable to provided position lower than at least the shoe-hold mechanism of the back plate.

本発明の車両用ドラムブレーキによれば、バックプレートの外周縁に補強板を取り付けたことにより、取付スペースの制約を受けることなくバックプレートを補強することができ、さらに、フランジ状の補強板でバックプレートの外周側を補強することにより、バックプレートを簡単な構造で、極力重量を増大させることなく補強することができる。また、バックプレートを車体に取り付けた状態で上部となるバックプレートの外周縁には、補強板を設けていないことから、補強板を伝って外部から雨水がバックプレートの内部に浸入することを抑制できる。 According to the vehicle drum brake of the present invention, by attaching a reinforcing plate to the outer peripheral edge of the back plate, the back plate can be reinforced without being restricted by the mounting space, and further, a flange-shaped reinforcing plate can be used. By reinforcing the outer peripheral side of the back plate, the back plate can be reinforced with a simple structure without increasing the weight as much as possible. In addition, since no reinforcing plate is provided on the outer peripheral edge of the back plate, which is the upper part when the back plate is attached to the vehicle body, it is possible to prevent rainwater from entering the inside of the back plate from the outside through the reinforcing plate. it can.

さらに、補強板を、バックプレートの車体側の外面から車体側に突出させたことにより、既存のドラムブレーキのバックプレートに、大幅な形状変更をすることなく簡単にバックプレートを補強することができる。 Further, by projecting the reinforcing plate from the outer surface of the back plate on the vehicle body side to the vehicle body side , the back plate of the existing drum brake can be easily reinforced without significantly changing the shape. ..

また、車体に取り付けた状態で、バックプレートの少なくともシューホールド機構よりも下方となる位置に補強板を設けたことにより、雨天時に補強板を伝って外部から雨水がバックプレートの内部に浸入することを抑制できる。 In addition, by providing a reinforcing plate at least below the shoe hold mechanism of the back plate when it is attached to the vehicle body , rainwater can enter the inside of the back plate from the outside through the reinforcing plate in rainy weather. Can be suppressed.

本発明の一形態例を示すバックプレートの正面図である。It is a front view of the back plate which shows one embodiment of this invention. 図１のＩＩ−ＩＩ断面図である。FIG. 2 is a sectional view taken along line II-II of FIG. 図１のＩＩＩ−ＩＩＩ断面図である。FIG. 3 is a sectional view taken along line III-III of FIG. 本発明の一形態例を示す車両用ドラムブレーキの正面図である。It is a front view of the drum brake for a vehicle which shows one embodiment of this invention. 図４のＶ−Ｖ断面図である。It is a VV cross-sectional view of FIG. 図４のＶＩ−ＶＩ断面図である。FIG. 4 is a sectional view taken along line VI-VI of FIG.

図１乃至図６は、本発明の車両用ドラムブレーキの一形態例を示す図で、この車両用ドラムブレーキ１は、車体に固設されるバックプレート２の内面に、弓型に形成された一対のブレーキシュー３，３を配置し、両ブレーキシュー３，３の一端をホイルシリンダ４のピストン４ａに、他端をアンカー５にそれぞれ当接させている。 1 to 6 are views showing an example of a vehicle drum brake of the present invention, in which the vehicle drum brake 1 is formed in an arch shape on the inner surface of a back plate 2 fixed to a vehicle body. A pair of brake shoes 3 and 3 are arranged, and one end of both brake shoes 3 and 3 is in contact with the piston 4a of the wheel cylinder 4 and the other end is in contact with the anchor 5.

この車両用ドラムブレーキ１は、ブレーキシュー３，３をバックプレート２の半径方向外側へ拡開して、外周のライニング３ａ，３ａをブレーキドラム（図示せず）に摺動させて制動作用を行うリーディング・トレーリングタイプで、一方のブレーキシュー３には、パーキングレバー６の一端が支軸にて枢支され、該パーキングレバー６の他端には、パーキングレバー６を牽引するためのブレーキケーブル７が連結されている。 In this vehicle drum brake 1, the brake shoes 3 and 3 are expanded outward in the radial direction of the back plate 2, and the outer peripheral linings 3a and 3a are slid on the brake drum (not shown) to perform a braking action. A leading trailing type, one end of the parking lever 6 is pivotally supported by a support shaft on one brake shoe 3, and the other end of the parking lever 6 is a brake cable 7 for pulling the parking lever 6. Are concatenated.

各ブレーキシュー３は、バックプレート２と平行に配置されるウェブ３ｂと、該ウェブ３ｂの外縁に交差方向に固設されるリム３ｃと、該リム３ｃの外周面に貼着される前記ライニング３ａとから成っている。各ブレーキシュー３は、ウェブ３ｂの略中間部が、シューホールドピン８とシューホールドスプリング９とによってバックプレート２にそれぞれ弾持され、シューホールドピン８とシューホールドスプリング９とによって、ブレーキシュー３をバックプレート側に付勢するシューホールド機構１０が構成されている。また、両ウェブ３ｂの間には、ホイルシリンダ４の内側にシュー戻しばね１１が、アンカー５の外側に連結ばね１２がそれぞれ張設されていて、双方のブレーキシュー３を常時縮径方向へ付勢しており、更に、シュー戻しばね１１のスプリング部１１ａの内周側を通過して、制動間隙自動調整装置１３が配置されている。 Each brake shoe 3 has a web 3b arranged parallel to the back plate 2, a rim 3c fixed to the outer edge of the web 3b in the intersecting direction, and a lining 3a attached to the outer peripheral surface of the rim 3c. It consists of. In each brake shoe 3, a substantially intermediate portion of the web 3b is held by the shoe hold pin 8 and the shoe hold spring 9 on the back plate 2, respectively, and the brake shoe 3 is held by the shoe hold pin 8 and the shoe hold spring 9. A shoe hold mechanism 10 for urging the back plate side is configured. Further, between the webs 3b, a shoe return spring 11 is stretched inside the wheel cylinder 4 and a connecting spring 12 is stretched outside the anchor 5, and both brake shoes 3 are always attached in the diameter reduction direction. Further, the brake gap automatic adjusting device 13 is arranged so as to pass through the inner peripheral side of the spring portion 11a of the shoe return spring 11.

バックプレート２は、中央にアクスル挿通孔２ａが形成され、該アクスル挿通孔２ａの車体取り付け時における上部側には、ホイルシリンダ用の位置決め孔２ｂが穿設されている。アクスル挿通孔２ａの下部側には、アンカー取付部２ｃが、バックプレート２の板材を内部側に平行に隆出させて形成され、該アンカー取付部２ｃには、リベット孔２ｄ，２ｄが穿設されている。また、アクスル挿通孔２ａの左右両側部には、バックプレート２の板材を内部側に平行に隆出させて形成したレッジ面２ｅが、ブレーキシュー３と対応する位置にそれぞれ３個ずつ円弧状に配列されている。 The back plate 2 has an axle insertion hole 2a formed in the center, and a positioning hole 2b for a wheel cylinder is bored on the upper side of the axle insertion hole 2a when the vehicle body is attached. An anchor mounting portion 2c is formed on the lower side of the axle insertion hole 2a by projecting the plate material of the back plate 2 in parallel to the inner side, and rivet holes 2d and 2d are bored in the anchor mounting portion 2c. Has been done. Further, on the left and right sides of the axle insertion hole 2a, three ledge surfaces 2e formed by projecting the plate material of the back plate 2 in parallel to the inner side are formed in an arc shape at positions corresponding to the brake shoes 3. It is arranged.

また、バックプレート２の外周縁には、フランジ状の補強板１４が取り付けられている。補強板１４は、車体に取り付けた状態でシューホールド機構１０，１０よりもやや上方位置から下方に向けて、バックプレート２の外周縁に沿って設けられ、バックプレート２の車体側となる外面２ｆに、バックプレート２の外周縁に沿って取り付けられる取付部１４ａと、該取付部１４ａの外周縁から車体側に略直角に突出する突出部１４ｂとを備えている。 A flange-shaped reinforcing plate 14 is attached to the outer peripheral edge of the back plate 2. The reinforcing plate 14 is provided along the outer peripheral edge of the back plate 2 from a position slightly above the shoe hold mechanisms 10 and 10 in a state of being attached to the vehicle body, and is an outer surface 2f on the vehicle body side of the back plate 2. A mounting portion 14a mounted along the outer peripheral edge of the back plate 2 and a protruding portion 14b protruding from the outer peripheral edge of the mounting portion 14a toward the vehicle body side are provided.

本形態例は、上述のように、バックプレート２を車体に取り付けた状態で、シューホールド機構１０，１０よりもやや上方位置から下方に向けて、バックプレート２の外周縁にフランジ状の補強板１４が取り付けられていることから、アクスル挿通孔２ａの周囲に配置される部品による取付スペースの制約を受けることなくバックプレート２を補強することができる。さらに、バックプレート２を車体に取り付けた状態で上部となるバックプレート２の外周縁には、補強板１４を設けていないことから、補強板１４を伝って外部からバックプレート２の内部に雨水が浸入することを抑制できる。また、取付部１４ａと突出部１４ｂとを備えたフランジ状の補強板１４でバックプレート２の外周側を補強することにより、簡単な構造でバックプレート２を良好に補強することができるとともに、重量が増大することを極力防止することができる。さらに、既存のドラムブレーキのバックプレート２に、大幅な形状変更をすることなくバックプレート２を簡単に補強することができる。 In this embodiment, as described above, with the back plate 2 attached to the vehicle body, a flange-shaped reinforcing plate is provided on the outer peripheral edge of the back plate 2 from a position slightly above the shoe hold mechanisms 10 and 10 to the bottom. Since the 14 is attached, the back plate 2 can be reinforced without being restricted by the attachment space due to the parts arranged around the axle insertion hole 2a. Further, since the reinforcing plate 14 is not provided on the outer peripheral edge of the back plate 2 which is the upper part when the back plate 2 is attached to the vehicle body, rainwater flows from the outside to the inside of the back plate 2 through the reinforcing plate 14. Invasion can be suppressed. Further, by reinforcing the outer peripheral side of the back plate 2 with the flange-shaped reinforcing plate 14 provided with the mounting portion 14a and the protruding portion 14b, the back plate 2 can be satisfactorily reinforced with a simple structure and the weight. Can be prevented as much as possible from increasing. Further, the back plate 2 of the existing drum brake can be easily reinforced without significantly changing the shape.

なお、本発明は上述の形態例のように、リーディング・トレーリングタイプのドラムブレーキに限るものではなく、どのようなタイプのドラムブレーキにも適用することができる。さらに、補強板の取り付け位置は上述の形態例に限定されるものではなく、バックプレートの外周縁の車体に取り付けた状態で上部となる部分を除いた適宜な位置に設けられればよい。 The present invention is not limited to the leading trailing type drum brake as in the above-described embodiment, and can be applied to any type of drum brake. Further, the mounting position of the reinforcing plate is not limited to the above-mentioned embodiment , and may be provided at an appropriate position excluding the upper portion in the state of being mounted on the vehicle body on the outer peripheral edge of the back plate.

１…車両用ドラムブレーキ、２…バックプレート、２ａ…アクスル挿通孔、２ｂ…位置決め孔、２ｃ…アンカー取付部、２ｄ…リベット孔、２ｅ…レッジ面、２ｆ…外面、３…ブレーキシュー、３ａ…ライニング、３ｂ…ウェブ、３ｃ…リム、４…ホイルシリンダ、４ａ…ピストン、５…アンカー、６…パーキングレバー、７…ブレーキケーブル、８…シューホールドピン、９…シューホールドスプリング、１０…シューホールド機構、１１…シュー戻しばね、１１ａ…スプリング部、１２…連結ばね、１３…制動間隙自動調整装置、１４…補強板、１４ａ…取付部、１４ｂ…突出部 1 ... Vehicle drum brake, 2 ... Back plate, 2a ... Axle insertion hole, 2b ... Positioning hole, 2c ... Anchor mounting part, 2d ... Rivet hole, 2e ... Ledge surface, 2f ... Outer surface, 3 ... Brake shoe, 3a ... Lining, 3b ... Web, 3c ... Rim, 4 ... Wheel cylinder, 4a ... Piston, 5 ... Anchor, 6 ... Parking lever, 7 ... Brake cable, 8 ... Shoe hold pin, 9 ... Shoe hold spring, 10 ... Shoe hold mechanism , 11 ... Shoe return spring, 11a ... Spring part, 12 ... Connecting spring, 13 ... Braking gap automatic adjustment device, 14 ... Reinforcing plate, 14a ... Mounting part, 14b ... Protruding part

Claims (2)

バックプレートの内部に、ブレーキドラムに摺接するブレーキシューを拡縮自在に収容するとともに、該ブレーキシューをバックプレート側に付勢するシューホールド機構を備えた車両用ドラムブレーキにおいて、
前記バックプレートの外周縁の車体に取り付けた状態で上部となる部分を除いた位置のみに、フランジ状の補強板を取り付け、
前記補強板は、前記バックプレートの車体側となる外面に、前記バックプレートの外周縁に沿って取り付けられる取付部と、該取付部の外周縁から車体側に突出する突出部を備えていることを特徴とする車両用ドラムブレーキ。 In a vehicle drum brake equipped with a shoe hold mechanism that accommodates the brake shoes that are in sliding contact with the brake drum inside the back plate and urges the brake shoes to the back plate side.
A flange-shaped reinforcing plate is attached only to the position excluding the upper part when attached to the vehicle body on the outer peripheral edge of the back plate .
The reinforcing plate is provided with a mounting portion attached along the outer peripheral edge of the back plate and a protruding portion protruding from the outer peripheral edge of the mounting portion toward the vehicle body on the outer surface of the back plate on the vehicle body side. Drum brakes for vehicles featuring. 前記補強板は、車体に取り付けた状態で、前記バックプレートの少なくとも前記シューホールド機構よりも下方となる位置に設けられることを特徴とする請求項１記載の車両用ドラムブレーキ。 The reinforcing plate is in a state attached to the vehicle body, the back plate of at least the vehicle drum brake according to claim 1, wherein the shoe than the hold mechanism, characterized in that provided in a position below.
JP2016167504A 2016-08-30 2016-08-30 Vehicle drum brakes Active JP6761305B2 (en)

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JP2016167504A JP6761305B2 (en) 2016-08-30 2016-08-30 Vehicle drum brakes
CN201710762735.1A CN107781324A (en) 2016-08-30 2017-08-30 Vehicle drum brake

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JP6761305B2 true JP6761305B2 (en) 2020-09-23

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WO2021006263A1 (en) * 2019-07-10 2021-01-14 日信工業株式会社 Vehicle drum brake
CN114838065A (en) * 2022-07-04 2022-08-02 徐州徐工筑路机械有限公司 Asbestos-free adjustable gap brake for land leveller

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