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WO2000006434A1 - Accumulator for hydraulic brake - Google Patents

Accumulator for hydraulic brake Download PDF

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Publication number
WO2000006434A1
WO2000006434A1 PCT/KR1999/000409 KR9900409W WO0006434A1 WO 2000006434 A1 WO2000006434 A1 WO 2000006434A1 KR 9900409 W KR9900409 W KR 9900409W WO 0006434 A1 WO0006434 A1 WO 0006434A1
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WO
WIPO (PCT)
Prior art keywords
accumulator
spring
main body
pressure
elastic valve
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.)
Ceased
Application number
PCT/KR1999/000409
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French (fr)
Japanese (ja)
Inventor
Moung Kil Kim
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Individual
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Individual
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Publication of WO2000006434A1 publication Critical patent/WO2000006434A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/54—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/18—Connection thereof to initiating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/224—Master control, e.g. master cylinders with pressure-varying means, e.g. with two stage operation provided by use of different piston diameters including continuous variation from one diameter to another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/42—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems

Definitions

  • the present invention relates to an accumulator for a hydraulic brake having a pressure 'cap' piston for receiving a uniform pressure on an elastic valve and a plurality of disks' spring portions having different spring coefficients, and used for a long time.
  • the present invention relates to a hydraulic brake having a function of preventing a brake from tightening even in a wide range of changes in brake oil pressure while having sufficient durability against the brake.
  • this type of brake tightening prevention system includes U.S. Patent Nos. 3,430,660, 4,188,073, 4,571,009, 5,036,879, 5,058,961 No. 5,074,625, etc. are known.
  • These brake tightening prevention systems mount a rubber valve (bulb) between the upper part of the body and the lower part of the body, and the expansion part of the valve is inserted.
  • the brake When the brake is depressed, hydraulic pressure of the brake is transmitted to the hydraulic guide groove of the elastic valve of the accumulator, and the valve is actuated by the pressure. The volume expands toward the arcuate space, and the effect of storing a part of the hydraulic pressure prevents the brake from tightening.
  • U.S. Pat. No. 5,390,989 uses the same elastic valve, but arranges a plurality of disk springs at the lower end of the elastic valve to store hydraulic pressure.
  • a system is disclosed that transmits splits, prevents excessive elastic contraction and expansion, and improves the pressure splitting ability by employing disc * springs.
  • Such a brake tightening prevention system forms a hydraulic guide groove having a conical deep groove in the middle of the upper end of the elastic valve, and expands and contracts around the end of the hydraulic guide groove by hydraulic pressure.
  • excessive stress is applied to this and repeated use results in aging and destruction.
  • Teplon 'coating layer is formed inside the bush to reduce friction, but this Teplon' coating layer repeats expansion and contraction. The coating layer peels off due to friction with the expansion part of the elastic valve. Also, the peeled teplon 'coating is caught between the disc's springs, which has a significant adverse effect on the operation of the brake tightening.
  • the present inventor has conducted intensive studies to solve the above problems, and as a result, has replaced the hydraulic guide portion having the deep groove in the conventional system with a groove of a small hemisphere, Insert pressure 'cap biston on side
  • the problem of the elastic valve is solved by equally dividing the elastic valve stress caused by the hydraulic pressure applied to the elastic valve into the elastic valve. Place and form two disks * spilling part. This makes it possible to vibrate even in a wide range of oil pressure changes, and also to smoothly perform the action of preventing brake tightening even at low pressures and high pressures.
  • FIGS. La and lb are an exploded perspective view and a cross-sectional view showing a fastening state of a conventional hydraulic brake accumulator.
  • the conventional accumulator is composed of an upper part (1) of a main body having a fastening nut (S) and a lower part (2) of a main body having a bolt part (S ') to be fastened to the upper part (1) of the main body.
  • a valve (3) having a hydraulic guide groove (chamber) (3 ′), a support flange (3 ′′), and an expansion part (3 ′′ ′).
  • a brake tightening prevention device having such a structure is provided with a pressure component of an elastic valve.
  • the problem of cracking, the elastic valve being damaged due to repeated expansion and contraction, the use of one spring part composed of multiple disks of the same size, the insensitivity to a wide range of hydraulic changes, and the coating on the inside of the bush There are problems.
  • the present invention solves these various problems, and as shown in the attached FIGS. 2 and 3, forms a pressure 'cap-biston' into which an elastic valve is inserted, and further has a size. A plurality of discs with different springs are arranged.
  • Figure la is an exploded perspective view of a conventional hydraulic brake accumulator.
  • Figure lb is a cross-sectional view c showing the engagement state of a conventional hydraulic accumulator brake
  • FIG. 2 is an exploded perspective view of the hydraulic brake accumulator of the present invention.
  • Figure 3 is a sectional view c showing the engagement state of the accumulator hydraulic brake of the present invention
  • FIG. 2 and FIG. 3 are an exploded perspective view and a sectional view of the hydraulic brake accumulator of the present invention.
  • the upper end of the upper part (7) of the main body has a hollow protrusion (7 ') formed with threads on both the inside and the outside.
  • An air valve (6) is fastened inside (7 ').
  • a cap (5) is screwed in to protect the air valve (6).
  • a thread is formed inside the lower part of the upper part (7) of the main body.
  • the head of the elastic valve (8) is inserted and crimped below the upper part (7) of the main body.
  • a pressure guide groove (19) is formed in the center of the flange (8 ') of the elastic valve (8).
  • a pressure 'cap' button (9) is inserted and crimped from below the elastic valve (8) to evenly distribute the compressive stress of the elastic valve (8). ing.
  • the material of the elastic valve (8) is not particularly limited, but is not particularly limited as long as it is not denatured at a temperature of 100 ° C or more and oil.
  • NBR Nonrile Butadiene Rubber
  • the material of the elastic valve (8) is not particularly limited, but is not particularly limited as long as it is not denatured at a temperature of 100 ° C or more and oil.
  • NBR Nonrile Butadiene Rubber
  • the braking distance also varies.
  • the pressure 'cap' piston (9) has a projection (9 ') formed at the lower end to fix one or more small disc' springs (10) and the small disc 'spring (10) downward.
  • the piston (10) and the disc spring (10) and the piston (11) are kept strong.
  • reference numeral 10 indicates a state of a spring portion where a plurality of small disc'springs are arranged.
  • the disc spring is a known one, meaning that the outer diameter and the inner diameter do not form the same plane, and are arranged in series with each other symmetrically. Therefore, when pressure is applied to the spring due to the difference between the positions of the outer diameter and the inner diameter, the spring has an elastic force.
  • a support plate (12) for securely supporting the small disc's spring (10,), the biston 'ring (11) and the lower large disc' spring (13) is located below the pressure cap 'piston'. Is done.
  • a plurality of the large disc 'springs (13) can be attached, and the number is not particularly limited.
  • Reference numeral 13 indicates a case where a plurality of large disk springs are attached.
  • the large disk spring portion (13 ') By attaching the large disk spring portion (13 ') in this way, it vibrates to a large oil pressure and can sufficiently play a role in preventing brake tightening even in a wide range of oil pressure.
  • a lower safety support plate (14) is arranged below the large disc * spring (13), and the upper end protruding portion of this support plate (14) is inserted into the groove of the large disc 'spring (13). To prevent withdrawal.
  • the attachment of such a support plate (14) causes the large disc 'spring (13) to oscillate, thereby preventing wear and damage on the lower part (16) of the body.
  • the pressure 'cap' button (9), small disc 'spring (10'), piston 'ring (11), upper and lower safety support plates (12) (14), large disc' spring '(13') Maintained firmly in the bush (15) inside the lower part (16) of the body.
  • the material of the bush (15) is not particularly limited, but any material that does not require an inner coating is sufficient.
  • a material having high wear resistance such as a copper alloy or a gold-copper alloy is desirable.
  • the outside of the bush (15) is supported by the lower part (16) of the main body, but the material of the upper part of the main body and the lower part (16) of the main body is not particularly limited as long as a light and durable material can be used. For example, duralumin is desirable.
  • FIG. 3 is a cross-sectional view showing a fastening state of the hydraulic brake accumulator of the present invention.
  • the operating principle of the brake tightening prevention according to the present invention will be described with reference to FIGS.
  • the hydraulic pressure in the master cylinder suddenly rises, causing an instantaneous abnormal high pressure phenomenon with surge (Surge) pressure and shock waves in the brake system fluid.
  • the fluid flows into the vertical channel (18) of the accumulator through the channel (17), and causes vibration in the elastic structure (10 to 14) of the accumulator.
  • the high-pressure fluid first applies pressure to the elastic valve (8) through the hydraulic guide groove (19), and the pressure is increased together with the elastic valve (8) vibrated by the pressure.
  • the cap and biston vibrates together, and this vibration simultaneously vibrates each disk spring, causing a periodic pressure change to the brake oil pressure for a certain period of time, causing the pressure in the fill cylinder to change periodically and the brake This will perform the function of preventing tightening.
  • elastic valves and disc springs have high damping, material and structure. By the way, when they are connected in series, the overall spring coefficient decreases relatively, and when they are applied with hydraulic pressure, they have a spring coefficient that can generate sufficient vibration, and at the same time, are durable against high hydraulic pressure. It has a suitable material and structure.
  • the first spring part reacts and vibrates to small hydraulic pressure
  • the second spring part reacts and vibrates to large hydraulic pressure. It has a structure that can perform the prevention function.
  • Industrial applicability On a dry asphalt road surface, a sudden stop at a speed of 100 km / h indicates that a regular car showed a braking distance of 62 m, while a car equipped with an electronic anti-locking system showed 43 m. When the same experiment was performed with the product according to the present invention installed, the braking distance was 30 m.
  • the brake accumulator of the present invention is easy to attach and detach, very inexpensive, and has excellent durability even when used for a long time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

An accumulator for automobile brake lock prevention which has an excellent durability after a long-time use and can perform a sufficient brake lock prevention despite a wide-range oil pressure change by being provided with a pressure cap piston (9) for allowing an elastic valve (8) to receive a uniform oil pressure and multiple springs (10, 13) having different spring constants, wherein a high pressure fluid produced due to an abrupt oil pressure rise in a master cylinder and a brake cylinder deforms the elastic valve (8) and disc springs (10, 13) after passing the vertical flow path (18) of the accumulator to allow part of its high pressure to be stored in the accumulator, thereby preventing the brake lock.

Description

明細書 油圧式ブレーキ用アキュムレータ 技術分野  Description Hydraulic brake accumulator Technical field

本発明は、 弾性バルブに均一な圧力を受けるようにするプレッシャー'キ ヤップ'ピス トンと、 スプリング係数の相違な複数のディスク'スプリング部 を有する油圧式ブレーキ用アキュムレータに関するものであり、 長時間使用 に対しても充分な耐久性を有しながら広範囲のブレーキ油圧の変化にもブレ ーキ締りの防止機能を有することを特徴とする油圧式ブレーキに関する。 背景技術  The present invention relates to an accumulator for a hydraulic brake having a pressure 'cap' piston for receiving a uniform pressure on an elastic valve and a plurality of disks' spring portions having different spring coefficients, and used for a long time. The present invention relates to a hydraulic brake having a function of preventing a brake from tightening even in a wide range of changes in brake oil pressure while having sufficient durability against the brake. Background art

従来、 このような種類のブレーキ締り防止システムとしては、 米国特許 第 3、430、660号、 4、188、073号、 4、571、009号、 5、036、879号、 5、058、961号、 5、074、625号等が知られており、 これらのブレーキ締り防止システムは本体 の上部と本体の下部の間にゴム材質のバルブ (bulb)を取り付け、 バルブの膨張 部位が挿入される本体の下部の内側にバルブの体積が膨張されうる空間部を 具備して制動させるために、 ブレーキを踏むとブレーキの油圧がアキュムレ ータの弾性バルブの油圧誘導溝へ伝達され、 その圧力によってバルブが弓形 の空間部に向けて体積が膨張し、 油圧の一部を貯蔵する効果により、 ブレー キの締り防止現象が起こるものである。  Conventionally, this type of brake tightening prevention system includes U.S. Patent Nos. 3,430,660, 4,188,073, 4,571,009, 5,036,879, 5,058,961 No. 5,074,625, etc. are known.These brake tightening prevention systems mount a rubber valve (bulb) between the upper part of the body and the lower part of the body, and the expansion part of the valve is inserted. When the brake is depressed, hydraulic pressure of the brake is transmitted to the hydraulic guide groove of the elastic valve of the accumulator, and the valve is actuated by the pressure. The volume expands toward the arcuate space, and the effect of storing a part of the hydraulic pressure prevents the brake from tightening.

しかしながら、 このようなシステムにおいてのブレーキ締り防止現象は、 すべての圧力が弾性バルブに加わるので、 過度な膨張と収縮によって油圧貯 蔵率と寿命がごく短縮される問題点があり、 更には油圧の分割供給作用が遅 いため、 制動距離が長引くような短所があった。 However, the phenomenon of preventing the brake from tightening in such a system has a problem that the hydraulic pressure storage rate and the service life are extremely shortened due to excessive expansion and contraction because all pressure is applied to the elastic valve. Split supply is slow Therefore, there was a disadvantage that the braking distance was prolonged.

そのため、 このような欠点を解決するために米国特許第 5、 390、989号に は同一の弾性バルブを使用するが、 この弾性バルブの下端に複数のディスク · スプリングを配置し、 油圧の貯蔵を分割伝達し、 過度な弾性の収縮と膨張を 防止し、 ディスク *スプリングを採用することによって圧力の分割能を向上す るシステムが開示されている。  Therefore, in order to solve such a drawback, U.S. Pat. No. 5,390,989 uses the same elastic valve, but arranges a plurality of disk springs at the lower end of the elastic valve to store hydraulic pressure. A system is disclosed that transmits splits, prevents excessive elastic contraction and expansion, and improves the pressure splitting ability by employing disc * springs.

しかしながら、 このようなブレーキ締り防止システムは弾性バルブの上 端部の真中に円錐形の深い溝を有する油圧誘導溝を形成しており、 この油圧 誘導溝の端部周辺には油圧による膨張と収縮が繰り返されるため、 これに伴 なう過度なストレスが加わえられて長時間使用すれば古びて破壊される問題 点があった。  However, such a brake tightening prevention system forms a hydraulic guide groove having a conical deep groove in the middle of the upper end of the elastic valve, and expands and contracts around the end of the hydraulic guide groove by hydraulic pressure. However, there is a problem in that excessive stress is applied to this and repeated use results in aging and destruction.

また、 同一大きさで複数のスプリングを有する一つの弾性構造部からな つているため、 広範囲のブレーキ油圧の変化に敏感な振動を起こせず、 局限 された油圧範囲に限って振動を起こす。 したがって、 確実なブレーキ締り防 止の保障が得られず、 ひいては車両の制動距離が長びく問題点もあった。  In addition, since it is composed of a single elastic structure having a plurality of springs of the same size, it does not generate vibrations sensitive to a wide range of changes in brake oil pressure, but generates vibrations only in a limited hydraulic pressure range. Therefore, it was not possible to reliably guarantee the prevention of tightening the brakes, and there was also a problem that the braking distance of the vehicle was long.

更にブシュの内側に摩擦を減少させるためにテプロン ' コーティング層を 形成しているが、 このテプロン'コーティング層は膨張と収縮作用を繰り返す 弾性バルブの膨張部との摩擦によってコーティング層が剥がれてしまい、 ま たこの剥がれたテプロン'コーティングがディスク 'スプリングの間に挟まれ、 ブレーキ締りの作動に大きな悪影響を与える。  In addition, a Teplon 'coating layer is formed inside the bush to reduce friction, but this Teplon' coating layer repeats expansion and contraction. The coating layer peels off due to friction with the expansion part of the elastic valve. Also, the peeled teplon 'coating is caught between the disc's springs, which has a significant adverse effect on the operation of the brake tightening.

発明の開示  Disclosure of the invention

本発明者は、 前記のような問題点を解決するために鋭意研究した結果、 従 来のシステムにおける前記深い溝を有する油圧誘導部を、 小型半球の溝に入 れ替え、 また弾性バルブの下側にはプレッシャー 'キャップ ·ビス トンを挿入 し、 これに加わる油圧による弾性バルブのス トレスを弾性バルブに均等に分 けてもたせることによって、 弾性バルブに係わる問題点を解決し、 更に、 ス プリング係数が相違な二つのグループのスプリング部を配置し、 二つのディ スク *スピリング部を形成する。 これによつて広範囲の油圧変化にも振動可能 となり、 さらには低圧、 高圧に対してもブレーキ締りの防止作用がスムーズ に遂行可能となり、 またテプロン ·コーティングをしなければならない材料、 例えば快削鋼等の代わりにコーティングを必要としない銅合金でブシュを製 作することによって従来の問題点を解消し、 制動距離も大幅に短縮できるこ とを見出し、 本発明を完成するに至った。 The present inventor has conducted intensive studies to solve the above problems, and as a result, has replaced the hydraulic guide portion having the deep groove in the conventional system with a groove of a small hemisphere, Insert pressure 'cap biston on side In addition, the problem of the elastic valve is solved by equally dividing the elastic valve stress caused by the hydraulic pressure applied to the elastic valve into the elastic valve. Place and form two disks * spilling part. This makes it possible to vibrate even in a wide range of oil pressure changes, and also to smoothly perform the action of preventing brake tightening even at low pressures and high pressures. Materials that must be teplon-coated, such as free-cutting steel The present inventors have found that the conventional problems can be solved by manufacturing the bush with a copper alloy that does not require a coating instead of the above, and that the braking distance can be greatly reduced, thereby completing the present invention.

以下、 本発明の添付図面を参照しながら本発明についてより詳しく説 明する。  Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings of the present invention.

図 l a及び lb は従来の油圧式ブレーキ用アキュムレータの分解斜視図及 び締結状態を示した断面図である。 前述のように従来のアキュムレータは締 結用ナツト部 (S)を有する本体の上部 (1)と前記本体の上部 (1)と締結されるボル ト部 (S')を有する本体の下部 (2)と前記本体の上下の部分 (1)(2)との間には油圧 誘導溝 (chamber)(3')と支持フランジ (3")を及び膨張部 (3"')を有するバルブ (3)を 取り付けた公知の油圧式ブレーキ締り防止装置において、 前記本体の下部 (2) に形成される垂直溝 (10)と前記垂直溝 (10)の間に納められ、 内側にテプロン- コーティング層 (1Γ)を有する支持ブシュ（11)と、 前記支持ブシュ（11)の下側に 納められ、 バルブ (3)の膨張によつて収縮弾発されて油圧分割供給を行うため の弾発力を提供する弾性構造部 (12)と、 前記の弾性構造部 (12)の上下に位置し、 過度な油圧の供給時に弾性構造部 (12)の破損を防止するための安全構造部 (13) からなる自動車用ブレーキ締り防止装置が開示されていた。  FIGS. La and lb are an exploded perspective view and a cross-sectional view showing a fastening state of a conventional hydraulic brake accumulator. As described above, the conventional accumulator is composed of an upper part (1) of a main body having a fastening nut (S) and a lower part (2) of a main body having a bolt part (S ') to be fastened to the upper part (1) of the main body. ) And the upper and lower parts (1) and (2) of the main body, a valve (3) having a hydraulic guide groove (chamber) (3 ′), a support flange (3 ″), and an expansion part (3 ″ ′). ) Is mounted in a known hydraulic brake tightening prevention device, wherein the vertical groove (10) formed in the lower part (2) of the main body is inserted between the vertical grooves (10), and the teplon-coating layer ( A support bush (11) having a 1Γ), which is accommodated under the support bush (11) and is resiliently contracted by the expansion of the valve (3) to provide resilient force for split supply of hydraulic pressure. Elastic structure (12), and a safety structure (13) positioned above and below the elastic structure (12) to prevent damage to the elastic structure (12) when excessive hydraulic pressure is supplied. Ranaru brake interference preventing apparatus has been disclosed for automobiles.

このような構造を有するブレーキ締り防止装置は、 弾性バルブの圧力分 割の問題、 繰り返される膨張、 収縮による弾性バルブの破損、 同一の大きさ の複数ディスク 'スプリングにて構成された一つのスプリング部の採用による 広範囲の油圧変化に対する鈍感さ、 ブシュの内側のコーティングによる問題 点等を抱えている。 A brake tightening prevention device having such a structure is provided with a pressure component of an elastic valve. The problem of cracking, the elastic valve being damaged due to repeated expansion and contraction, the use of one spring part composed of multiple disks of the same size, the insensitivity to a wide range of hydraulic changes, and the coating on the inside of the bush There are problems.

本発明は、 このような様々な問題点を解決したものであり、 添付された図 2 及び図 3 に示されたように、 弾性バルブを挿入するプレッシャー'キャップ- ビストンを形成し、 更に大きさの異なる複数のディスク 'スプリングを配置し たものである。  The present invention solves these various problems, and as shown in the attached FIGS. 2 and 3, forms a pressure 'cap-biston' into which an elastic valve is inserted, and further has a size. A plurality of discs with different springs are arranged.

図面の簡単な説明  BRIEF DESCRIPTION OF THE FIGURES

図 laは従来の油圧式ブレーキ用アキュムレータの分解斜視図。  Figure la is an exploded perspective view of a conventional hydraulic brake accumulator.

図 lbは従来の油圧式ブレーキ用アキュムレータの締結状態を示した断面 図 c Figure lb is a cross-sectional view c showing the engagement state of a conventional hydraulic accumulator brake

図 2は本発明の油圧式ブレーキ用アキュムレータの分解斜視図。  FIG. 2 is an exploded perspective view of the hydraulic brake accumulator of the present invention.

図 3は本発明の油圧式ブレーキ用アキュムレータの締結状態を示した断面 図 c Figure 3 is a sectional view c showing the engagement state of the accumulator hydraulic brake of the present invention

発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION

以下、 実施例を取り上げて本発明のついて更に詳しく説明する。  Hereinafter, the present invention will be described in more detail by way of examples.

図 2及び図 3 は本発明の油圧式ブレーキ用アキュムレータの分解斜視 図及び断面図を示した図である。  FIG. 2 and FIG. 3 are an exploded perspective view and a sectional view of the hydraulic brake accumulator of the present invention.

また図 2及び図 3のうち、 本体の上部 (7)の上端には内側と外側両方共 にねじ山が形成された中空形突出部 (7')がー体になっており、 この突出部 (7') の内側にはエアーバルブ (6)が締結される。 このエアーバルブ (6)を保護するた めにキヤップ (5)がねじ締結される。  2 and 3, the upper end of the upper part (7) of the main body has a hollow protrusion (7 ') formed with threads on both the inside and the outside. An air valve (6) is fastened inside (7 '). A cap (5) is screwed in to protect the air valve (6).

また、 本体の上部 (7)の中央部にはブレーキ液が流入される中空部 (17)が 形成される。 この中空部 (17)にブレーキ液が流入されて油圧をかける。 この中 空部の中央には垂直流路 (18)が形成されている。 In the center of the upper part (7) of the main body, there is a hollow part (17) through which brake fluid flows. It is formed. The brake fluid flows into the hollow portion (17) and applies hydraulic pressure. A vertical flow path (18) is formed in the center of the hollow portion.

また、 この本体の上部 (7)の下側には内側にねじ山が形成されている。 この本体の上部 (7)の下側に弾性バルブ (8)の頭部が揷入、 圧着される。  Also, a thread is formed inside the lower part of the upper part (7) of the main body. The head of the elastic valve (8) is inserted and crimped below the upper part (7) of the main body.

この弾性バルブ (8)のフランジ (8')の中央部には圧力誘導溝 (19)が形成され ている。 この弾性バルブ (8)の外側には弾性バルブ (8)の下側から揷入、 圧着さ れて弾性バルブ (8)の圧縮ストレスを均等配分させるプレッシャー 'キャップ' ビス トン (9)が挿入されている。  A pressure guide groove (19) is formed in the center of the flange (8 ') of the elastic valve (8). At the outside of the elastic valve (8), a pressure 'cap' button (9) is inserted and crimped from below the elastic valve (8) to evenly distribute the compressive stress of the elastic valve (8). ing.

弾性バルブ (8)の材質としては特に限定されないが、 100°C以上の温度及 びオイルに対して変性されないものであれば特に限定されるものはない。 た とえば、 NBR(Nitrile Butadiene Rubber)等が挙げられる。  The material of the elastic valve (8) is not particularly limited, but is not particularly limited as long as it is not denatured at a temperature of 100 ° C or more and oil. For example, NBR (Nitrile Butadiene Rubber) and the like can be mentioned.

また、 このような弾性バルブ (8)の材質や厚み等によってスプリング係数が 異なるので、 制動距離も違って来る。  Also, since the spring coefficient varies depending on the material and thickness of the elastic valve (8), the braking distance also varies.

前記プレッシャー 'キャップ'ピストン (9)は下端に突出部 (9')が形成されて おり、 下方へ 1個以上の小ディスク'スプリング (10)と前記小ディスク'スプリ ング (10)を固定化するビストン'リング (11)が挿通されてディスク'スプリング (10)とビストン'リング (11)が丈夫に維持される。  The pressure 'cap' piston (9) has a projection (9 ') formed at the lower end to fix one or more small disc' springs (10) and the small disc 'spring (10) downward. The piston (10) and the disc spring (10) and the piston (11) are kept strong.

図 2において、 符合 10'は複数の小ディスク'スプリングを配置したスプリ ング部の状態を示したものである。 ここで、 ディスク ·スプリングは公知のも のであり、 外径と内径が同一の平面を成していないことを意味し、 相互対称 しながら直列に配置される構成になっている。 したがって、 外径と内径の位 置の違いによってこのスプリングに圧力が加わる時、 弾発力を有するように なる。  In FIG. 2, reference numeral 10 'indicates a state of a spring portion where a plurality of small disc'springs are arranged. Here, the disc spring is a known one, meaning that the outer diameter and the inner diameter do not form the same plane, and are arranged in series with each other symmetrically. Therefore, when pressure is applied to the spring due to the difference between the positions of the outer diameter and the inner diameter, the spring has an elastic force.

このようなディスク 'スプリングの数は材質及び外径、 内径、 形状によつ て異なり、 また、 あとで述べる大ディスク 'スプリングも同様である。 The number of such disc springs depends on the material, outer diameter, inner diameter, and shape. The same is true for the large disk 'spring described later.

さらにディスク 'スプリングの材質、 形状、 使用個数等によってスプリン グ係数が変わり、 これによつて制動距離も違って来るのは公知の事実である。  It is a well-known fact that the spring coefficient changes depending on the material, shape, and number of disc springs used, and the braking distance also changes accordingly.

そして、 前記プレッシャー.キャップ 'ピス トンの下側に小ディスク'スプ リング (10，）とビストン'リング (11)と下部大ディスク'スプリング (13)を安全に 支持する支持板 (12)が配置される。 この大ディスク 'スプリング (13)も複数個 を取り付けることができ、 その数は特に限定されない。  A support plate (12) for securely supporting the small disc's spring (10,), the biston 'ring (11) and the lower large disc' spring (13) is located below the pressure cap 'piston'. Is done. A plurality of the large disc 'springs (13) can be attached, and the number is not particularly limited.

符合 13'は複数の大デイスク ·スプリングを取り付けた場合である。  Reference numeral 13 'indicates a case where a plurality of large disk springs are attached.

このように大ディスク ·スプリング部 (13')を取り付けることによって大き い油圧に振動し、 広範囲の油圧にも充分にブレーキ締り防止の役割を果たせ るようになる。  By attaching the large disk spring portion (13 ') in this way, it vibrates to a large oil pressure and can sufficiently play a role in preventing brake tightening even in a wide range of oil pressure.

また、 大ディスク *スプリング (13)の下側には下部安全支持板 (14)が配置 されるが、 この支持板 (14)の上端突出部が前記大ディスク'スプリング (13)の 溝に挿入され離脱を防止する。 更にこのような支持板 (14)を取り付けることに よって大ディスク 'スプリング (13)が振動し、 これによつて本体の下部 (16)に おける磨耗と損傷を防ぐ。  A lower safety support plate (14) is arranged below the large disc * spring (13), and the upper end protruding portion of this support plate (14) is inserted into the groove of the large disc 'spring (13). To prevent withdrawal. In addition, the attachment of such a support plate (14) causes the large disc 'spring (13) to oscillate, thereby preventing wear and damage on the lower part (16) of the body.

前記プレッシャー 'キヤップ'ビス トン (9)、 小ディスク'スプリング (10')、 ピス トン'リング (11)、 上下部安全支持板 (12)(14)、 大ディスク'スプリング部 (13')は本体の下部 (16)内側のブシュ（15)内で丈夫に維持される。このブシュ（15) の材質としては特に限定されないが、 内部のコーティングを必要としない材 質であれば充分であり、 例えば、 銅合金、 金銅合金など耐磨耗性の強いもの が望ましい。  The pressure 'cap' button (9), small disc 'spring (10'), piston 'ring (11), upper and lower safety support plates (12) (14), large disc' spring '(13') Maintained firmly in the bush (15) inside the lower part (16) of the body. The material of the bush (15) is not particularly limited, but any material that does not require an inner coating is sufficient. For example, a material having high wear resistance such as a copper alloy or a gold-copper alloy is desirable.

前記ブシュ（15)の外側は本体の下部 (16)によつて支持されるが、 本体の上 部と本体の下部 (16)の材質は軽くて丈夫な材質が使用できれば、 特に限定され ず、 例えばジュラルミン等が望ましい。 The outside of the bush (15) is supported by the lower part (16) of the main body, but the material of the upper part of the main body and the lower part (16) of the main body is not particularly limited as long as a light and durable material can be used. For example, duralumin is desirable.

次に、 図 3は本発明の油圧式ブレーキ用アキュムレータの締結状態を示し た断面図である。 以下、 添付した図 2及び図 3に基づいて本発明のブレーキ締 り防止の作動原理について説明する。  Next, FIG. 3 is a cross-sectional view showing a fastening state of the hydraulic brake accumulator of the present invention. Hereinafter, the operating principle of the brake tightening prevention according to the present invention will be described with reference to FIGS.

運転者がブレーキ 'ペダルを踏むことによってマスタシリンダ一の油圧が 急に上昇すると、 ブレーキ系統の流体に瞬間的にサージ (Surge)圧力と衝撃波 を伴なう異常高圧現象が起こり、 この高圧流体が流路 (17)を通ってアキュムレ —タの垂直流路 (18)へ流入し、 アキュムレータの弾性構造部 (10〜 14)に振動を 起こす。 そうなると、 まずこの高圧流体は油圧誘導溝 (19)を通って弾性バルブ (8)に圧力を加え、 この圧力によつて振動する弾性バルブ (8)と共にプレツシャ 一。キャップ.ビストンが同伴振動し、 またこの振動が各ディスク'スプリング を同時に振動させることによって一定の間ブレーキ油圧に周期的な圧力変化 が加えられ、 フィルシリンダー内の圧力を周期的に変化させてブレーキの締 りを防ぐ機能を遂行することになる。  When the driver presses the brake pedal, the hydraulic pressure in the master cylinder suddenly rises, causing an instantaneous abnormal high pressure phenomenon with surge (Surge) pressure and shock waves in the brake system fluid. The fluid flows into the vertical channel (18) of the accumulator through the channel (17), and causes vibration in the elastic structure (10 to 14) of the accumulator. Then, the high-pressure fluid first applies pressure to the elastic valve (8) through the hydraulic guide groove (19), and the pressure is increased together with the elastic valve (8) vibrated by the pressure. The cap and biston vibrates together, and this vibration simultaneously vibrates each disk spring, causing a periodic pressure change to the brake oil pressure for a certain period of time, causing the pressure in the fill cylinder to change periodically and the brake This will perform the function of preventing tightening.

元々、 弾性バルブとディスク.スプリングは減衰性が大きレ、材質及び構造 を有するものである。 ところで、 これらが直列に連結されると相対的に全体 のスプリング係数は減少し、 油圧が加わる時には充分な振動を起こすことが できるスプリング係数を有するようになると同時に、 高い油圧に対しても丈 夫な材質と構造を有するようになる。  Originally, elastic valves and disc springs have high damping, material and structure. By the way, when they are connected in series, the overall spring coefficient decreases relatively, and when they are applied with hydraulic pressure, they have a spring coefficient that can generate sufficient vibration, and at the same time, are durable against high hydraulic pressure. It has a suitable material and structure.

また、 小さな油圧に対しては第 1スプリング部が反応、 振動し、 逆に大き な油圧に対しては第 2スプリング部が反応、 振動するため、 広範囲の油圧変化 に対しても充分にブレーキ締り防止機能が遂行できる構造を有している。 産業上の利用可能性 ドライ'ァスフアルトの路面上において、 時速 100kmの速度で急停止した 場合、 一般乗用車は 62mの制動距離を示したのに対し、 電子式締り防止シス テムを取り付けた乗用車は 43mを示しており、 更に本発明による製品を取り 付けて同じ実験を行った場合の制動距離は 30mであった。 In addition, the first spring part reacts and vibrates to small hydraulic pressure, and conversely the second spring part reacts and vibrates to large hydraulic pressure. It has a structure that can perform the prevention function. Industrial applicability On a dry asphalt road surface, a sudden stop at a speed of 100 km / h indicates that a regular car showed a braking distance of 62 m, while a car equipped with an electronic anti-locking system showed 43 m. When the same experiment was performed with the product according to the present invention installed, the braking distance was 30 m.

それだけでなく、 本発明のブレーキ用アキュムレータは着脱が容易で価 格も非常に安すく、 長時間の使用に対しても優れた耐久性を有している。  In addition, the brake accumulator of the present invention is easy to attach and detach, very inexpensive, and has excellent durability even when used for a long time.

なお、 広範囲の油圧変化に対してもブレーキ締り防止機能が充分に遂行 できる油圧式ブレーキの製作が可能である。  It is possible to manufacture a hydraulic brake that can sufficiently perform the function of preventing brake tightening even in a wide range of oil pressure changes.

Claims

請求の範囲 The scope of the claims 1、 本体の上部 7と、 この本体の上部 7の上端内側にねじ締結られるエアーバ ルブ 6と、 このエアーバルブ 6を保護、 内装して本体の上部の上端外側にねじ 締結されるエアーバルブのキャップ 5と、 前記本体の上部 7の下側ねじ締結部 の上端に頭部が挿入、 圧着される弾性バルブ 8と、 前記本体の上部 7の下側と ねじ締結される本体の下部 16からなる油圧式ブレーキのアキュムレータにお いて、  1. The upper part 7 of the main body, the air valve 6 screwed inside the upper end of the upper part 7 of the main body, and the cap of the air valve 6 that protects and installs the air valve 6 and is screwed outside the upper end of the upper part of the main body 5, an elastic valve 8 whose head is inserted and crimped at the upper end of the lower screw fastening part of the upper part 7 of the main body, and a hydraulic pressure comprising a lower part 16 of the main body screwed to the lower side of the upper part 7 of the main body In the accumulator of the type brake, 前記弾性バルブ 8の下側に挿入、 圧着されて弾性バルブ 8の圧縮ス トレス を均等に配分させる作用を遂行するプレッシャー 'キャップ'ビストン 9と、 前記プレツシヤー 'キャップ'ビストン (9)の下側に揷通される多数の小ディス ク-スプリング 10を有する第 1スプリング部 10'と、 前記第 1スプリング部 10'を 固定化するビス トン'リング 11と、 前記ビス トン'リング 11の下側に密着され る上部安全支持板 12と、 前記上部安全支持板 12に相互対称しながら直列連結 される多数の大ディスク 'スプリング 13で連結される第 2スプリング部 13'と、 前記第 2スプリング部 13'の下側に密着される下部安全支持板 14と、 前記本体 の下部 16に内装されて、 本体の下部 16の内側を保護するブシュ 15からなる油 圧式ブレーキ用アキュムレータ。  A pressure 'cap' biston 9 which is inserted and crimped under the elastic valve 8 and distributes the compression stress of the elastic valve 8 evenly, and under the pressure 'cap' biston (9) A first spring portion 10 'having a number of small disc-springs 10 to be passed therethrough, a screw ring 11 for fixing the first spring portion 10', and a lower portion of the screw ring 11 An upper safety support plate 12 that is in close contact with the upper safety support plate 12, a plurality of large discs symmetrically connected to each other in series with the upper safety support plate 12, a second spring portion 13 that is connected by a spring 13, and the second spring portion 13 An accumulator for a hydraulic brake, comprising: a lower safety support plate 14 closely attached to the lower side; and a bush 15 provided inside the lower portion 16 of the main body to protect the inside of the lower portion 16 of the main body. 2、 互いに相違なスプリング係数を有するスプリ ング部 10'、 13'を有する ことを特徴とする請求項 1記載の油圧式ブレーキ用アキュムレータ。  2. The accumulator for a hydraulic brake according to claim 1, comprising spring portions 10 'and 13' having different spring coefficients from each other. 3、 互いに相違なスプリング係数を有するスプリング部 10'、 13'の間に取 り付けられる複数の安全支持板 12、 14 と、 複数のビストン'リング 11 を取り 付けることを特徴とする請求項 1記載の油圧式ブレーキ用アキュムレータ。  3. A plurality of safety support plates 12, 14 mounted between spring portions 10 ', 13' having different spring coefficients from each other, and a plurality of biston 'rings 11 are mounted. An accumulator for a hydraulic brake as described. 4、 弾性バルブ (8)の材質や厚みを変化させて制動力を調節することを特徴 とする請求項 1記載の油圧式ブレーキ用アキュムレータ。 4. The accumulator for a hydraulic brake according to claim 1, wherein the braking force is adjusted by changing a material and a thickness of the elastic valve (8). 5、 複数の相違なスプリング係数を有するスプリング部 10'、 13'を構成す るディスク 'スプリング 10、 13 の半径や厚み、 形状、 使用個数等を変化させ て制動力を調節することを特徴とする請求項 1記載の油圧式ブレーキ用アキ ュムレータ。 5.It is characterized in that the braking force is adjusted by changing the radius, thickness, shape and number of springs 10 and 13 constituting the spring parts 10 'and 13' having a plurality of different spring coefficients. The accumulator for a hydraulic brake according to claim 1, wherein
PCT/KR1999/000409 1998-07-27 1999-07-27 Accumulator for hydraulic brake Ceased WO2000006434A1 (en)

Applications Claiming Priority (2)

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KR2019980013883U KR200246226Y1 (en) 1998-07-27 1998-07-27 Automotive Brake Locking Device
KR1998/13883U 1998-07-27

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KR20000003631U (en) 2000-02-25

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