REMOVABLE ANTI-ROLL SUPPORT FOR TEST VEHICLES

Abstract

The invention relates to a removable rollover support (1) for a test vehicle comprising wheels, each wheel having fixing screws, characterized in that said rollover support (1) comprises a longitudinal cross member (4) having a first end and a second end, each end having an end fitting (5), said end fitting (5) having a roller (6) and a shaft (7), said shaft (7) being configured to be fixed to the fixing screws of one of the wheels of said vehicle, said shaft (7) being connected to the end fitting (5) by means of a bearing (8). The invention also relates to a test vehicle comprising a first rollover support and a second rollover support. Abstract figure: Fig. 1

Description

Title of the invention: REMOVABLE ANTI-ROLL-OVER SUPPORT FOR TEST MOTOR VEHICLE

[0001] The invention relates to the stabilization devices of motor vehicles during road tests in extreme conditions.

[0002] Prior art patent application JP2006151253, which describes a swing arm suspension, is known. The suspension comprises a pair of left swing arms and a pair of right swing arms. Each pair of left and right swing arms is connected to a support element. The support element is mechanically connected to the left and right wheels of a vehicle. The suspension includes a torsion bar positioned widthwise across the vehicle. The torsion bar is connected to the left and right swing arm pairs. The torsion bar includes an offset means that increases the distance between the left and right swing arms when they are vertically offset from each other. However, a drawback remains. The suspension is positioned transversely with respect to the longitudinal axis of the vehicle.Thus, the suspension in question does not prevent the risk of the vehicle overturning onto one of its two lateral sides.

[0003] The objective of the present invention is to remedy these drawbacks and reduce the risks of overturning of motor vehicles during road tests, particularly in extreme conditions.

[0004] To achieve this objective, the invention proposes a removable anti-rollover support for a test motor vehicle comprising wheels, each wheel having fixing screws, notable in that said anti-rollover support comprises a longitudinal cross member comprising a first end and a second end, each end having an end piece, said end piece having a roller and a shaft, said shaft being configured to be fixed to the fixing screws of one of the wheels of said vehicle, said shaft being connected to the end piece by means of a bearing.

[0005] Thanks to the invention, the casters provide an additional support point to the vehicle when it leans towards one of the lateral sides.

[0006] Preferably, said nozzle has a mass greater than or equal to 10 kg.

[0007] Preferably, said mass is between 10 kg and 30 kg.

[0008] Such a mass improves the stability of the anti-rollover support, and consequently of said vehicle, without distorting the results of the rolling tests.

[0009] Preferably, said longitudinal body is perpendicular to each end piece, the ends of each end being parallel to each other.

[0010] Thus, the weight of the vehicle is evenly distributed on each end of the longitudinal body in order to improve the resistance of the anti-rollover support and, consequently, to reduce the risks of the vehicle overturning.

[0011] Furthermore, the invention relates to a test motor vehicle having a longitudinal axis, said vehicle comprising a first wheel and a second wheel each positioned on a first lateral side, said vehicle comprising a third wheel and a fourth wheel each positioned on a second lateral side, said first lateral side and said second lateral side being positioned on either side of said longitudinal axis, remarkable in that said vehicle comprises a first anti-rollover support and a second anti-rollover support previously described, said first anti-rollover support being fixed on said first wheel and on said second wheel, said second anti-rollover support being fixed on said third wheel and said fourth wheel.

[0012] The positioning of two anti-rollover supports on said vehicle reduces the risks of said vehicle overturning on each lateral side.

[0013] Advantageously, the wheels of said vehicle have a first diameter, the casters have a second diameter, the second diameter being smaller than the first diameter.

[0014] Preferably, said first diameter being equal to three times said second diameter.

[0015] Thus, this reduces the dimensions of the anti-rollover support so that it is easy to mount them for carrying out the rolling tests, without requiring any special arrangement of the space in which the test is carried out.

[0016] The invention will be further detailed by describing non-limiting embodiments, and based on the accompanying figures illustrating variants of the invention, in which: - [Fig.l] schematically illustrates an isometric view of an anti-rollover support mounted on a test motor vehicle according to one embodiment; - [Fig.2] schematically illustrates a detailed view of one end of the anti-tipping support; - [Fig.3] schematically illustrates a test motor vehicle comprising a first anti-rollover support and a second anti-rollover support.

[0017] An anti-rollover support 1 mounted on a test motor vehicle is schematically illustrated in [Fig. 1] and [Fig. 2]. The vehicle has wheels 2, preferably four wheels 2. Each wheel 2 has fixing screws 3. The rollover support comprises a longitudinal cross member 4. The longitudinal cross member has a cylindrical shape in [Fig. 1] and [Fig. 2], however, this is not a limiting factor. The longitudinal cross member 4 has a first end and a second end. Each end has a fitting 5. The fitting 5 is a component with significant mass, which helps stabilize the vehicle when the rollover support is mounted on the vehicle for road tests. Preferably, the fitting 5 has a mass greater than or equal to 10 kg. More preferably, the fitting 5 has a mass between 10 kg and 30 kg. Such mass allows the vehicle to be oriented towards the ground by gravity without significantly affecting the vehicle's mass and, consequently, the results of the road tests. The fitting 5 has a roller 6 and a shaft 7.The shaft 7 is designed to be fixed to the wheel mounting bolts 3 of the vehicle. The shaft 7 is connected to the end piece 5 via a bearing 8, thus creating a pivot joint between the shaft 7 and the end piece 5. The wheels 2 of the vehicle rotate, causing the shaft 7 to rotate, which in turn rotates the bearing 8. The bearing 8 has a moving part and a fixed part. The moving part is fixed to the shaft 7 and therefore rotates, while the fixed part is fixed to the end piece 5, which is therefore stationary. Preferably, the longitudinal body 4 is perpendicular to each end piece 5. Furthermore, the end pieces 5 at each end of the rollover support 1 are parallel to each other.

[0018] Figure 3 schematically illustrates the test vehicle comprising a first wheel 2a, a second wheel 2b, a third wheel 2c, and a fourth wheel 2d. The vehicle has a longitudinal axis A. The first wheel 2a and the second wheel 2b are positioned on a first lateral side of the vehicle. The third wheel 2c and the fourth wheel 2d are positioned on a second lateral side. The first and second lateral sides are positioned on either side of the longitudinal axis A. The vehicle includes a first rollover support 1a and a second rollover support 1b. The first rollover support 1a is mounted on the first wheel 2a and the second wheel 2b. The second rollover support 1b is mounted on the third wheel 2c and the fourth wheel 2d.Thus, the first anti-rollover support 1a is positioned on the first lateral side of said vehicle, while the second anti-rollover support 1b is positioned on the second lateral side of said vehicle. Preferably, the wheels 2 have a first diameter and the casters 6 have a second diameter. The second diameter is smaller than the first diameter. Preferably, said first diameter is equal to three times the second diameter. In other words, the second diameter is 3 times smaller than the first diameter. Thus, in this configuration, the vehicle is stable even when traveling at very high speeds. Indeed, before their commercialization, . The vehicles are tested under extreme conditions, including very high speeds. This poses a risk to the personnel conducting these tests. In fact, if the vehicle rolls over, they could be injured. When the first anti-rollover support (1a) and the second anti-rollover support (1b) are fitted to the vehicle, the risk of rollover is significantly reduced. Indeed, at high speed, if the vehicle leans to one side or the other, the first or second anti-rollover support, and in particular the casters (6), prevent the vehicle from tipping over.

Claims

Demands

1. Removable rollover support (1) for a test motor vehicle comprising wheels (2), each wheel (2) comprising fixing screws (3), characterized in that said rollover support (1) comprises a longitudinal cross member (4) comprising a first end and a second end, each end comprising an end piece (5), said end piece (5) comprising a roller (6) and a shaft (7), said shaft (7) being configured to be fixed to the fixing screws (3) of one of the wheels of said vehicle, said shaft (7) being connected to the end piece (5) by means of a bearing (8).

2. Anti-tipping support (1) according to claim 1 characterized in that said end piece (5) has a mass greater than or equal to 10 kg-

3. Anti-tipping support (1) according to claim 2 characterized in that said mass is between 10 kg and 30 kg.

4. Anti-tipping support (1) according to any one of claims 1 to 3 characterized in that said longitudinal body (4) is perpendicular to each end piece (5), the end pieces (5) at each end being parallel to each other.

5. A test motor vehicle having a longitudinal axis (A), said vehicle comprising a first wheel (2a) and a second wheel (2b) each positioned on a first lateral side, said vehicle comprising a third wheel (2c) and a fourth wheel (2d) each positioned on a second lateral side, said first lateral side and said second lateral side being positioned on either side of said longitudinal axis (A), characterized in that said vehicle comprises a first anti-roll support (la) and a second anti-roll support (1b) according to any one of claims 1 to 4, said first anti-roll support (la) being fixed on said first wheel (2a) and on said second wheel (2b), said second anti-roll support (1b) being fixed on said third wheel (2c) and said fourth wheel (2d).

6. Vehicle according to claim 5 characterized in that the wheels (2) of said vehicle have a first diameter, the casters (6) have a second diameter, the second diameter being smaller than the first diameter.

7. Vehicle according to claim 6 characterized in that said first diameter is equal to three times said second diameter.

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