RU2587775C1 - Device to improve vehicle body strength at overturning - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to automotive industry. Device for increasing strength of vehicle body during overturn includes a rollover sensor of angular position of vehicle, connected to a DC power source - battery. In presence of signal storage battery is connected to electromagnet where electromagnetic field is formed, drawing lock. Lock releases spring pedal and ejection lever extending rod. Upper end of rod moves in guide secured in upper part of sidewall stand and rests against support assembly with spring lock. Lower end of rod together with pushing lever arm moves towards inner space of vehicle passenger compartment, without touching upper part of body bottom

EFFECT: higher vehicle safety.

1 cl, 2 dwg

Description

The invention relates to transport engineering, in particular to systems that ensure passive safety of passengers when capsizing in the transverse plane of a vehicle (for example, a bus) due to the automatic operation of a device that increases the strength of the vehicle body.

There are various devices for improving the passive safety of buses (for example, patent DE 19513873 A1, 10.17.1996, Unfallschutz bei Omnibussen, MAN NUTZFAHRZEUGE AG). The side safety bars built into the frame are ineffective due to the large length and small permissible cross-sectional sizes (large cross-sectional sizes will lead to a decrease in the internal width of the body, which is undesirable). When tipping over, folding of the roof is possible due to the low stiffness of the racks (also associated with restrictions on the size of their sections).

A device is also known for increasing the passive safety of a bus in a collision and rollover (RF patent 2172686, 11/15/1999, B60R 19/42, Safe bus body, Kuvaev V.Ya.). The device comprises a side safety beam made in the form of a thin-walled profile. The beam has a large width and therefore, with a small mass, it effectively bends, protecting it from a side impact. In a frontal or oblique impact, this beam absorbs the impact energy, while redistributing it to the entire area of the side wall. As a result, the deformation of the front of the bus will be less, which reduces the severity of injuries to the driver and front passengers. The beam standing out in the cabin is used as an armrest and therefore does not reduce the effective width of the cabin. To prevent folding of the roof during rollover, the bus has movable struts, which are in operation to the window racks and partially hidden in them. If there is a risk of tipping over and receiving a signal from the corresponding sensor, the squib in the pneumatic cylinder is triggered, which with its rod rotates the strut relative to its upper end. In this case, the lower end moves in the transverse slot of the safety beam and enters the latch, forming a rigid triangle.

The disadvantage of this system is to increase the risk of injury to passengers of the vehicle due to:

- their movement in the event of a roll of the body towards the retractable safety beam;

- movements of the parts of the rigid triangle in the direction of the "residual space" of the passenger compartment of the vehicle upon impact of the sidewall against the supporting surface, as deformation of the sidewall in this case will occur at the place of attachment of the safety beam to the sidewall of the body.

A device is known for increasing the strength of a vehicle body during a rollover (a.s. RU 2483961 C1, class B62D 25/04, B60R 21/13). This device is selected for the prototype. The device contains a vehicle angular position sensor connected to a direct current source - a battery, upon receipt of a signal from which a system is activated that increases the strength of the body. The functioning of the system is as follows: the battery is connected to an electromagnet, in which an electromagnetic field is formed, pulling in the lock, releasing the spring pedal, pushing rod, moving along the guides fixed in the upper part of the side wall pillar and the upper part of the underbody, and abutting against the support nodes containing spring clips.

The prototype device has the drawback: when the vehicle capsizes due to loss of stability, it is possible that the limbs of passengers get into the slots of the lower guide and, as a result, they are injured when moving the rod.

The objective of the invention is to develop a device that increases the strength properties of the vehicle body, the design of which will reduce the likelihood of injury to passengers.

The problem is solved due to the fact that, in the presence of a signal, the battery is connected to an electromagnet, in which an electromagnetic field is formed that retracts the lock, which releases the spring pedal and eject lever, pushing the rod, the upper end of which moves along the guide fixed in the upper part of the sidewall strut and abuts against the support unit containing the spring clip, and the lower one together with the lever of the ejector lever - towards the interior of the vehicle interior, not touching Yas top of the underbody.

In FIG. 1 shows a device for increasing the strength of a vehicle body during a rollover. The device includes: a sensor of the angular position (roll) of the body 1, a control unit 2, an electromagnet 3 with a lock 4, a spring pedal 5, an ejector lever 6, a guide 7, a support unit 8, a rod 9 and an emphasis 10.

In the upper part of the rack 11, a guide 7 is fixed, in the housing of which a push lever 6 with a torsion spring is mounted. At the lower end of the rod 9 is mounted a rubber stop 10.

The work of the proposed device to increase the strength of the body of the bus during rollover is as follows (Fig. 2).

When a signal occurs from the sensor of the angular position (roll) of the body 1, which recorded the excess of the critical value of the angle of inclination of the body, the control unit 2 connects to the current source (battery) an electromagnet 3 built into the guide body 7. The electromagnet attracts the lock 4, after which the spring pedal 5 and the pusher lever 6 pivotally connected to the rod 9, is unclenched, extending the rod 9. The upper end of the rod 9 moves downward in the side slots of the channel of the guide 7 and abuts against the support unit 8. The lower the end of the rod 9 together with the emphasis 10 and the shoulder of the ejector lever 6 extends toward the inside of the vehicle without touching the upper part of the underbody 12. Touching will only occur when the vehicle hits the supporting surface as a result of the deformed window pillars and roof being exposed to the rod 9 vehicle.

The technical result of the proposed device is to increase the level of internal passive safety of the vehicle, and therefore, to protect the life and health of the driver and passengers when capsizing the vehicle in the transverse plane.

Claims (1)

A device for increasing the strength of a vehicle body during a rollover, comprising a vehicle angular position sensor connected to a direct current source - a battery, upon receipt of a signal from which a system is activated to increase the body strength, characterized in that, if there is a signal, the battery is connected to an electromagnet in which an electromagnetic field is formed, retracting the lock, releasing the spring pedal and pushing lever, pushing the rod, the upper end which moves along the guide fixed in the upper part of the sidewall pillar and abuts against the support unit containing the spring clip, and the lower end together with the lever of the ejector lever - towards the interior of the vehicle, without touching the upper part of the underbody.

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