SU1093582A1 - Apparatus for tensioning the safety belt of vehicle - Google Patents

Apparatus for tensioning the safety belt of vehicle Download PDF

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Publication number
SU1093582A1
SU1093582A1 SU833624357A SU3624357A SU1093582A1 SU 1093582 A1 SU1093582 A1 SU 1093582A1 SU 833624357 A SU833624357 A SU 833624357A SU 3624357 A SU3624357 A SU 3624357A SU 1093582 A1 SU1093582 A1 SU 1093582A1
Authority
SU
USSR - Soviet Union
Prior art keywords
belt
cylinder
housing
rod
piston
Prior art date
Application number
SU833624357A
Other languages
Russian (ru)
Inventor
Николай Николаевич Денисов
Александр Валерьянович Хиникадзе
Олег Дмитриевич Леошкевич
Борис Петрович Курдин
Светлана Григорьевна Родина
Сергей Алексеевич Малышев
Юрий Викторович Филиппов
Анатолий Иосифович Рябчинский
Олег Васильевич Мельников
Вадим Федорович Кутенев
Леонид Оскарович Тедер
Вайно Густавович Лаури
Original Assignee
Предприятие П/Я В-2725
Центральный Научно-Исследовательский Автополигон Нами
Производственное Объединение "Норма"
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-2725, Центральный Научно-Исследовательский Автополигон Нами, Производственное Объединение "Норма" filed Critical Предприятие П/Я В-2725
Priority to SU833624357A priority Critical patent/SU1093582A1/en
Application granted granted Critical
Publication of SU1093582A1 publication Critical patent/SU1093582A1/en

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Abstract

1. EQUIPMENT OF VEHICLE SAFETY BELT, containing a cylinder with a piston, a rod and a pyrotechnic device controlled by an overload sensor, wedge-type braking devices and a tear-off element made on the rod, characterized in that, in order to increase the safety of the user, by ensuring a differential selecting long and diagonal branches of the belt when the device is triggered and ensuring the independence of energy dissipation from the degree of tension of the belt to reduce weight and abarit device, it is equipped with a housing in which there are two guide carriages with belt rollers, with one carriage associated with the specified rod, the other with the cylinder, and through each belt roller loops are thrown respectively and the diagonal branches of the belt, the ends of which fixed at the end of the housing, with the braking devices mounted on each carriage, and the total stroke of the carriages in the housing exceeds the stroke of the piston in the cylinder. 2. A device according to claim 1, characterized in that the body is made of a box section. (L 3. The device according to claim 2, characterized in that the body is made of a light alloy.

Description

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The invention relates to ensuring the passive safety of a user vehicle, such as a motor vehicle, in the event of a road traffic accident (RTA) and, in particular, to seat-belt devices. Closest to the invention is a vehicle safety safety tension device comprising a cylinder with a piston, a rod and a pyrotechnic device controlled by an overload sensor, wedge-type braking devices and a tear-off element formed on the rod 1. The known device provides for the selection of one belt branch, Kotor tensioning is like a diagonal belt, and on the bed, connected through a loop of the castle. This does not give uniform tension on the diagonal and back belts, for example, “The shortening of the full back belt, while the diagonal tensioned tension and the tear-off (shear) element of the device worked. In the event of a slight slack in the belt loop that holds the passenger, due to incorrect adjustment of the belt or due to the posture it occupies at the time of the collision, even with normal operation of the known tensioning devices, the user’s excess energy is not dissipated by the braking elements of the device because when tightening the belt and, therefore, the tensioning device does not work in the design mode, which leads to an increase in the load on the user and a decrease in his degree of safety. In known devices for tensioning, a cylinder with a piston and a rod are simultaneously bearing elements which act as guides and elements of braking devices that take up all the forces arising during operation. In this case, the stroke of the piston and the course of braking are the same. Taking into account that the overload during braking reaches several tons, the cylinder and piston must have significant dimensions and weight, while it is necessary to ensure obturation between the piston and the cylinder, which, in turn, requires careful treatment of obturated surfaces over a considerable area, which significantly increases the cost of the device, which is usually used one-time. An analysis of the acting forces on the belt during the collision shows that to select the "belt slack, a slight force is required (1015 kgf), while the force on the belt at the moment of collision of the user reaches several tons, i.e. The braking elements of the tension device are loaded much more than the drive elements: the rod, the piston, the cylinder. The aim of the invention is to increase the user’s safety of the vehicle by providing a differentiated choice of the long and diagonal branches of the belt when the device is triggered and ensuring energy dissipation is independent of the belt tension while reducing the weight and dimensions of the device, as well as ease of assembling it in the vehicle cabin . The goal is achieved by the fact that the tensioning device of a vehicle safety belt, containing a cylinder with a piston, a rod, and a pyrotechnic device controlled by an overload sensor, wedge-type braking devices and a tear-off element formed on the rod, is provided with a housing in which two guides are located carriages with belt belts, with one carriage associated with the specified rod, another with a cylinder, and through each roller of the belt loops are thrown respectively along the lateral and diagonal branches of the belt, the ends of which are It gained strength in the side of the case, and the brakes are mounted on each carriage, and the total course of the carriages in the housing exceeds the stroke of the piston in the cylinder. The body has a box section. The body is made of light alloy. FIG. 1 shows a device, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a sectional side view; in fig. 5 is a layout of a belt tensioner device in a vehicle cabin. The device contains carriages 2 and 3 placed in a hollow non-hermetic box 1 box-section. On carriages there are brake-wedge type 4 braking elements pressed by springs 5 in the direction of the jamming research institute and interacting with the body during braking, as well as the belt roller 6 and guides rollers 7 of somewhat larger diameter, having the ability to roll inside the body when moving the carriages. Through the roller 6, the carriage 2 slings over the diagonal loop of the 8 belt, and through the roller 6 carriage 3 slings over the loop on the wedge branch 9 of the belt, and the ends of these loops are embedded in the covers 10 of the housing 1, which also has a guide roller 11 for the incoming seat belt branches. To the carriage 2 is attached a cylinder 12 with a pyrotechnic device 13 and a cover 14, and in the carriage 3 a rod 15 is attached. 16, having a tear-off neck 17, limiting the forces during tensioning of the branches of the belt at the moment of tightening. The belt tensioning device is mounted in the vehicle cabin (Fig. 5) on the middle pillar by means of an elastic collar 18 between the upper 19 and lower 20 lugs of the seat belt anchorage. The fastener of the lock 21 is a belt, on the clear 9 and diagonal 8 branches of the belt identical to those used on production cars. When a pyrotechnic device 13 is triggered at the moment of collision under the action of hot gases on the piston 16 and the cylinder cover 14 of the carriage 2 and 3 are pulled towards each other, mixed, and independently relative to the housing 1, depending on the magnitude of the force and the slack and diagonal branches of the belt. When the required tension of the branches is reached, the neck 17 of the rod 15 opens and the carriages 2 and 3 gain the ability to move to the ends of the body 1 under the action of the branches 8 and 9 of the seat belt loaded with inertial forces acting on a person in a collision of vehicles. During the return stroke of the carriages 2 and 3, ball brake elements, 4, which interact with the housing 1 and dissipate excess energy when the carriages move exceeding the piston stroke in the cylinder, turn on. The proposed belt tensioning device effectively disperses the excess energy received by the user during collision of vehicles, by the braking elements of the device, regardless of the degree of belt tension due to the overrun of the carriages p6 compared to the piston stroke. In this case, uniform tension is ensured on both the clear and diagonal branches of the belt by means of a differentiated selection of the slack of the two branches of the safety belt when the carriages independently move from the body. This occurs in the initial stage of a vehicle collision even before the occurrence of an overload, thus creating "living space and an additional braking path, thereby reducing the load on the user and increasing the efficiency of the seat belt at high speeds. A power drive - a cylinder with a piston in the proposed device can be made in reduced weight and dimensions as compared with the known structures, i.e. in accordance with the requirements for tensioning the belt when pulling in, while the braking elements that take the most loads interact with the box-type body, which can be made of a light alloy, for example, D 16, AMG, etc. The device provides speed at acceptable loads on the user by the vehicle and the dissipation of the user's excess energy during overloads, which increases its safety.
1
Fmg.Z
FIG. 2

Claims (3)

1. VEHICLE SAFETY BELT TENSION DEVICE, comprising a cylinder with a piston, a rod and a pyrotechnic device controlled by an overload sensor, wedge-type braking devices and a tear-off element made on the rod, characterized in that, in order to increase the user's safety by providing a differentiated choice the lengths of the waist and diagonal branches of the belt when the device is triggered and to ensure independence of energy dissipation from the degree of tension of the belt for reducing weight and size device, it is equipped with a housing in which there are two guide carriages with belt rollers, one carriage connected to the specified rod, the other to the cylinder, and loops of the belt and diagonal belt branches, the ends of which are fixed at the end, are thrown through each belt roller housing, and the braking devices are mounted on each carriage, and the total stroke of the carriages in the housing exceeds the stroke of the piston in the cylinder.
2. The device according to π. 1, characterized in that § that the casing is made in a box section.
3. The device according to p. 2, characterized in that the housing is made of light alloy.
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SU833624357A 1983-07-21 1983-07-21 Apparatus for tensioning the safety belt of vehicle SU1093582A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU833624357A SU1093582A1 (en) 1983-07-21 1983-07-21 Apparatus for tensioning the safety belt of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU833624357A SU1093582A1 (en) 1983-07-21 1983-07-21 Apparatus for tensioning the safety belt of vehicle

Publications (1)

Publication Number Publication Date
SU1093582A1 true SU1093582A1 (en) 1984-05-23

Family

ID=21075267

Family Applications (1)

Application Number Title Priority Date Filing Date
SU833624357A SU1093582A1 (en) 1983-07-21 1983-07-21 Apparatus for tensioning the safety belt of vehicle

Country Status (1)

Country Link
SU (1) SU1093582A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1. Патент FR № 2255783, кл. В 60 R 21/10, (прототип). *

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