KR0171800B1 - Pretensioner for an automobile - Google Patents

Pretensioner for an automobile Download PDF

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Publication number
KR0171800B1
KR0171800B1 KR1019950058179A KR19950058179A KR0171800B1 KR 0171800 B1 KR0171800 B1 KR 0171800B1 KR 1019950058179 A KR1019950058179 A KR 1019950058179A KR 19950058179 A KR19950058179 A KR 19950058179A KR 0171800 B1 KR0171800 B1 KR 0171800B1
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KR
South Korea
Prior art keywords
cylinder
cable
retractor
pretensioner
piston
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Application number
KR1019950058179A
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Korean (ko)
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KR970039942A (en
Inventor
채규희
Original Assignee
김태구
대우자동차주식회사
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Priority to KR1019950058179A priority Critical patent/KR0171800B1/en
Publication of KR970039942A publication Critical patent/KR970039942A/en
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Publication of KR0171800B1 publication Critical patent/KR0171800B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/34Belt retractors, e.g. reels
    • B60R22/46Reels with means to tension the belt in an emergency by forced winding up
    • B60R22/4628Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/34Belt retractors, e.g. reels
    • B60R22/46Reels with means to tension the belt in an emergency by forced winding up
    • B60R22/4619Transmission of tensioning power by cable, e.g. using a clutch on reel side
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/34Belt retractors, e.g. reels
    • B60R22/46Reels with means to tension the belt in an emergency by forced winding up
    • B60R22/4628Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
    • B60R2022/4642Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

본 발명은 자동차에서 사용되는 프리텐셔너에 관한 것으로, 시트벨트(57)가 권취되는 리트랙터(51)의 회전축에 결합된 권취릴(53)에 케이블(54)을 통해 연결되는 자동차용 프리텐셔너에서, 상기 실린더(52)가 고정수단(2)을 통해 차량의 록커패널(1)에 설치되어 있고, 상기 케이블(54)외부에는 케이블(54)을 보호하기 위한 호오스(3)가 피복되어 그 설치위치에 따라 간단하게 굽혀 설치할 수 있음과 동시에 미관을 향상시킬 수 있도록 한 것이다.The present invention relates to a pretensioner used in an automobile, in the automobile pretensioner connected to the winding reel (53) coupled to the rotational shaft of the retractor (51) in which the seat belt (57) is wound, wherein The cylinder 52 is installed in the rocker panel 1 of the vehicle through the fixing means 2, and the outer portion of the cable 54 is covered with a hose 3 for protecting the cable 54, and is installed at the installation position. It can be easily bent and installed at the same time to improve the aesthetics.

Description

자동차용 프리텐셔너Automotive Pretensioners

제1도는 일반적인 자동차용 프리텐셔너가 리트렉터에 연결된 상태를 개략적으로 나타낸 일부절개사시도.1 is a partial cutaway perspective view schematically showing a state in which a general automotive pretensioner is connected to a retractor.

제2도는 본 발명에 다른 자동차용 프리텐셔너를 제1도와 같이 나타낸 일부절개사시도이다.FIG. 2 is a partially cutaway perspective view showing an automobile pretensioner according to the present invention as shown in FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 록커패널 2 : 고정수단1: rocker panel 2: fixing means

3 : 호오스 51 : 리트랙터3: Hoose 51: Retractor

52 : 실린더 53 : 권취릴52: cylinder 53: reel

54 : 케이블 55 : 피스톤54 cable 55 piston

56 : 가스발생장치 57 : 시트벨트56 gas generator 57 seat belt

58 : 센터필러58: center filler

본 발명은 자동차에서 사용되는 프리텐셔너(pretensioner)에 관한 것으로, 특히 안전벨트의 리트랙터(retractor)에 설치되어 차량충돌시 시트벨트(seatbelt)를 순간적으로 감아 안전벨트 착용자에게 구속력을 증가시켜 승객을 효과적으로 보호할 수 있도록 된 자동차용 프리텐셔너에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pretensioner used in automobiles. In particular, the present invention relates to a pretensioner used in an automobile, and is particularly installed in a retractor of a seat belt so that the seat belt is instantaneously wound during a vehicle crash, thereby increasing the binding force to the seat belt wearer, thereby effectively passenger It relates to a car pretensioner that can be protected.

일반적으로 자동차용 프리텐셔너는 전면으로부터의 충돌을 감지하면 폭약 등의 가스발생장치가 작동하여, 이 가스발생장치로부터 발생되는 가스의 팽창력을 이용하여 시트벨트를 느슨해진 만큼 순식간에 리트랙터에 감아 충돌시에 안전벨트 착용자의 차체전방으로 이동되는 것을 방지하여 승객을 보호하는 역할을 하는 것으로 일명 프리 로더(preloader)라고도 불린다.In general, when a car pretensioner detects a collision from the front side, a gas generator such as an explosive is activated, and when the collision occurs due to the loosening of the seat belt by using the expansion force of the gas generated from the gas generator, It is also called a preloader, which serves to protect passengers by preventing them from being moved to the front of the vehicle body.

이러한 자동차용 프리텐셔너는 제1도에 나타낸 바와 같이, 안전벨트의 리트랙터(51)측면에 내부에 중공이 형성된 ¬자형의 실린더(52)가 장착되어 있고, 이 실린더(52)내부에는 리트랙터(51)의 회전축에 결합된 권취릴(53)에 감겨지는 케이블(54)과 연결된 피스톤(55)이 삽입되어, 실린더(52)내부에 삽입된 가스발생장치(56)가 점화되면서 발생되는 고압의 가스에 의해 실린더(52)내부에서 슬라이딩할 수 있도록 되어 있다.As shown in FIG. 1, the automobile pretensioner is equipped with a U-shaped cylinder 52 in which a hollow is formed on the side of the retractor 51 of the seat belt, and a retractor (inside the cylinder 52). The piston 55 connected to the cable 54 wound around the winding reel 53 coupled to the rotary shaft of the 51 is inserted, so that the high pressure generated when the gas generator 56 inserted into the cylinder 52 is ignited. The gas can slide inside the cylinder 52.

따라서, 차량의 충돌을 충돌감지센서에 의해 감지되면 이 충돌감지 센서가 상기 가스발생장치(56)를 작동시켜, 가스발생장치(56)에 충진된 점화제를 점화시킴과 동시에 가스발생제가 발화하면서 발생된 고압의 가스가 가스발생장치(56)로부터 실린더(52)내부로 유입되면서 피스톤(55)을 화살표방향으로 슬라이딩시키게 된다.Therefore, when the collision of the vehicle is detected by the collision detection sensor, the collision detection sensor operates the gas generator 56 to ignite the ignition agent filled in the gas generator 56 and at the same time the gas generator ignites. As the generated high pressure gas flows into the cylinder 52 from the gas generator 56, the piston 55 slides in the direction of the arrow.

이와 같이 피스톤(55)이 실린더(52)내에서 슬라이딩됨에 따라 피스톤(55)에 연결된 상기 케이블(54)은 권취릴(53)부터 풀리면서 권취릴(53)을 회전시키게 되고, 이에 따라 권취릴(53)이 결합되어 있는 리트랙터(51)의 회전축도 연동하여 회전하면서 안전벨트의 착용에 의해 느슨하게 풀리어 있던 시트벨트(57)가 화살표방향으로 당겨져 리트랙터(51)의 회전축에 순간적으로 감기면서 안전벨트를 착용한 승객의 가슴과 허리를 조이면서 시트에 구속시키게 되어 차량충돌시 승객을 효과적으로 보호할 수 있게 된다.As the piston 55 slides in the cylinder 52 as described above, the cable 54 connected to the piston 55 rotates the winding reel 53 while being unrolled from the winding reel 53. While the rotation shaft of the retractor 51 to which the 53 is coupled is also rotated in conjunction with the seat belt 57 loosely pulled by the wearing of the seat belt, the seat belt 57 is pulled in the direction of the arrow to be instantly wound on the rotation shaft of the retractor 51. However, the chest and waist of the passenger wearing the seat belt are tightened and restrained on the seat, thereby effectively protecting the passenger in the event of a vehicle crash.

여기서, 안전벨트 착용시 풀려진 시트벨트(57)를 리트랙터(51)의 회전축에 감기는 양을 증가시키면 시킬수록 승객을 시트에 더욱 조이면서 구속시켜 차량충돌에 대한 안정성을 향상시킬 수가 있는바, 이와 같이 회전축에 감기는 시트벨트(57)의 길이를 증가키기 위해서는 권취릴(53)의 회전량을 증가시켜 이에 결합된 회전축의 회전량을 증가시키면 되고, 이는 통상 실린더(52)에 삽입된 피스톤(55)의 행정을 증가시켜 이 피스톤(55)에 연결되면서 권취릴(53)에 감겨진 케이블(54)의 풀리는 량을 증가시켜 권취릴(53)의 회전량을 증가시키는 방법을 사용하여 오고 있다.Here, as the amount of winding the seat belt 57 released when the seat belt is worn on the revolving shaft of the retractor 51 increases, the passengers are further tightened and restrained on the seat, thereby improving stability against collision. In order to increase the length of the seat belt 57 wound on the rotating shaft, the amount of rotation of the winding reel 53 may be increased to increase the amount of rotation of the rotating shaft coupled thereto, which is usually inserted into the cylinder 52. By increasing the stroke of the piston 55 to increase the amount of rotation of the winding reel 53 by increasing the amount of pulley of the cable 54 wound around the winding reel 53 while being connected to the piston 55 Coming.

즉, 권취릴(53)의 회전량을 증가시키는 방법은 피스톤(55)이 삽입된 실린더(52)의 길이를 증가시켜 피스톤(55)의 행정을 증가시켜야 하나 이는 리트랙터(51)와 마찬가지로 차실내로 노출되게 설치되어 있으므로 차실내 공간을 많이 차지하게 됨과 더불어 미관을 해칠 염려가 있고, 실린더(52)가 리트랙터(51)가 일체로 형성되어 있으므로써 조립이나 교체하는 데에 어려움이 있었다.That is, the method of increasing the amount of rotation of the winding reel 53 should increase the stroke of the piston 55 by increasing the length of the cylinder 52 into which the piston 55 is inserted, but this is similar to the retractor 51. Since it is installed to be exposed to the interior, it takes up a lot of space in the vehicle and may damage the aesthetics, and the cylinder 52 has a difficulty in assembling or replacing because the retractor 51 is integrally formed.

이에 본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로, 프리텐셔너를 리트랙터와 분리하여 설치할 수 있게 하여, 간편하게 조립, 수리할 수 있음과 더불어 차실내공간을 효율적으로 활용할 수 있고, 미관을 향상시킬 수 있도록 된 자동차용 프리텐셔너를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, it is possible to install the pre-tensioner separated from the retractor, it is possible to easily assemble and repair, as well as to effectively utilize the interior space, improve aesthetics It is an object of the present invention to provide a pretensioner for a vehicle that can be made.

상기와 같은 목적을 달성하기 위한 본 발명은 차량의 도어가 닫힐 때 접하는 록커패널(locker panel)의 실내측에 실린더가 고정수단을 통해 설치되어 있고, 이 실린더에 내장된 피스톤과 리트랙터의 회전축에 끼워진 권취릴에 케이블이 연결되어 있으며, 이 케이블외부에는 자유자재로 굽힐 수 있는 호오스가 피복되어 케이블을 보호할 수 있도록 되어 있다.The present invention for achieving the above object is installed in the interior side of the locker panel (locker panel) in contact with the door of the vehicle through the fixing means, the piston and the retractor built in the cylinder The cable is connected to the wound reel, and the outside of the cable is coated with a freely bendable hose to protect the cable.

즉, 리트랙터와 프리텐셔너의 실린더를 분리설치되어, 케이블을 통하여 리트랙터의 권취릴과 연결되는 상기 실린더의 크기가 증가되는 경우에도 상기 호오스의 길이를 길게 하거나 설치가 편리하도록 구부려 실린더를 간편하게 필요한 위치에 설치할 수가 있음과 더불어 실린더가 차실내에서 잘 보이지 않는 록커패널에 설치하게 되면 미관을 해치는 것을 방지할 수가 있게 된다.That is, the cylinders of the retractor and the pretensioner are separated and installed, and even if the size of the cylinder connected to the reel of the retractor through the cable is increased, the length of the hose is easily bent or the cylinder is bent for convenient installation. In addition, the cylinder can be installed on a rocker panel that is hard to see in the cabin, thereby preventing the appearance of harm.

이하 본 발명을 첨부한 예시도면을 참조하여 자세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

제2도는 본 발명에 따른 자동차용 프리텐셔너를 개략적으로 나타낸 일부절개사시도로서, 차량의 도어가 닫힐 때 도어와 접하는 록커패널(1)의 실내측에 실린더(52)가 고정수단(2)을 통해 설치되어 있고, 이 실린더(52)에는 내부에 중공이 형성되어 피스톤(55)과 가스발생장치(56)가 삽입되어 있으며, 이 실린더(52)에 내장된 피스톤(55)과 리트랙터(51)의 회전축에 끼워진 권취릴(53)에 케이블(54)이 연결되어 있다.2 is a partially cutaway perspective view schematically showing a pretensioner for a vehicle according to the present invention, in which a cylinder 52 is installed on the interior side of the locker panel 1 in contact with the door when the door of the vehicle is closed through the fixing means 2. The cylinder 52 has a hollow formed therein, in which a piston 55 and a gas generator 56 are inserted, and the piston 55 and the retractor 51 built in the cylinder 52 are inserted. The cable 54 is connected to the winding reel 53 fitted to the rotating shaft.

여기서, 상기 케이블(54)외부에는 케이블(54)을 보호하기 위한 호오스(2)가 피복되어 있으되, 이 호오스(3)는 플렉시블한 재질로 이루어져 그 설치위치에 따라 간단하게 굽혀 설치할 수 있도록 되어 있다.Here, the outside of the cable 54 is covered with a hose 2 for protecting the cable 54, the hose 3 is made of a flexible material so that it can be easily bent and installed according to the installation position. .

즉, 프리텐셔너의 실린더(52)에 내장된 피스톤(55)에 연결된 케이블(54)의 길이를 길게하여 실린더(52)가 리트랙터(51)로부터 일정거리를 두고 분리설치되어, 차량충돌시 안정성을 향상시키기 위해 케이블(54)을 통하여 리트랙터(51)의 권취릴(53)과 연결되는 상기 실린더(52)의 크기가 증가되는 경우에도 상기 호오스(2)의 길이를 길게 하거나 설치가 편리하도록 구부려 실린더(52)를 간편하게 센터필러나 리어필러에 설치할 수가 있도록 되어 있다.That is, the length of the cable 54 connected to the piston 55 built in the cylinder 52 of the pretensioner is lengthened so that the cylinder 52 is separated from the retractor 51 at a certain distance, thereby improving stability during a vehicle crash. In order to improve the length of the hose 2 or to be easy to install even when the size of the cylinder 52 connected to the winding reel 53 of the retractor 51 through the cable 54 is increased The cylinder 52 can be easily installed in the center pillar or the rear pillar.

이상에서 설명한 바와 같이 본 발명에 따른 자동차용 프리텐셔너에 따르면, 차량충돌시 탑승객의 사고에 대한 안정성을 향상시키기 위하여 피스톤(55)의 행정을 증가시켜 그에 따른 실린더(52)의 부피가 크게 되는 경우에도 플렉시블한 상기 호오스(54)을 통해 실린더(52)와 리트랙터(51)를 분리하여 원거리에 설치시킬 수 있으므로써, 실린더(52)를 설치하거나 고장등으로 인하여 교체, 수리할 때에도 간편하게 취부할 수 있음과 더불어, 상기한 바와 같이 차체의 록커패널하부에 부피가 큰 실린더(52)를 설치하는 경우에는 차실내에서 잘보이지 않기 때문에 미관을 해칠 염려가 적어지는 효과가 있는 것이다.As described above, according to the automobile pretensioner according to the present invention, even if the volume of the cylinder 52 is increased by increasing the stroke of the piston 55 in order to improve the stability of the accident of the passengers during a vehicle crash. Since the cylinder 52 and the retractor 51 can be separated and installed at a long distance through the flexible hose 54, the cylinder 52 and the retractor 51 can be installed at a long distance. In addition, as described above, when the bulky cylinder 52 is installed under the rocker panel of the vehicle body, it is less visible in the interior of the vehicle.

Claims (1)

차량의 도어가 닫힐 때 도어와 접하는 록커패널(1)의 실내측에 실린더(52)가 고정수단(2)을 통해 설치되고, 상기 실린더(52)에는 내부에 중공이 형성되어 피스톤(55)과 가스발생장치(56)가 삽입설치되며, 상기 실린더(52)와 소정거리를 두고 시트벨트(57)가 권취되는 리트랙터(51)가 설치되고, 상기 리트랙터(51)의 권취릴(53)과 상기 실린더(52)의 피스톤(55)사이에 케이블(54)이 연결설치되며, 상기 케이블(54)의 외부에는 플랙시블한 호오스(3)가 피복되어 그 설치위치에 따라 간단하게 굽혀 설치할 수 있도록 된 자동차용 프리텐셔너.When the door of the vehicle is closed, a cylinder 52 is installed in the interior side of the locker panel 1 in contact with the door through the fixing means 2, and the cylinder 52 has a hollow formed therein so that the piston 55 and The gas generator 56 is inserted and installed, and a retractor 51 is installed to wind the seat belt 57 at a predetermined distance from the cylinder 52, and the reel 53 of the retractor 51 is installed. And a cable 54 is installed between the piston 55 of the cylinder 52 and a flexible hose 3 is coated on the outside of the cable 54 so that the cable 54 can be simply bent and installed according to its installation position. Pre-tensioner for the car.
KR1019950058179A 1995-12-27 1995-12-27 Pretensioner for an automobile KR0171800B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950058179A KR0171800B1 (en) 1995-12-27 1995-12-27 Pretensioner for an automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950058179A KR0171800B1 (en) 1995-12-27 1995-12-27 Pretensioner for an automobile

Publications (2)

Publication Number Publication Date
KR970039942A KR970039942A (en) 1997-07-24
KR0171800B1 true KR0171800B1 (en) 1999-02-18

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KR1019950058179A KR0171800B1 (en) 1995-12-27 1995-12-27 Pretensioner for an automobile

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KR970039942A (en) 1997-07-24

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