JPH0949780A - Side face collision simulator for vehicle and simple simulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a low-cost white body instead of an expensive real vehicle by moving a second table cart at a constant speed after the card is pressed by a loading machine, colliding it with the side face of a testpiece on a first table cart, and stopping the motions of the first and second carts by a shock absorber after the collision. SOLUTION: A cart 5 is pressed by the operation of the piston of a loading machine 7 so as to give a target speed to a second table cart 5. When the acceleration of the cart 5 becomes '0' and the cart 5 becomes the highest speed, the piston is stopped. Then, the cart 5 is separated from the piston, and transferred to a high speed linear motion by inertia. A first table cart 2 is disposed ahead, and the cart 5 is collided with a white body at the sides. At this time the side of the door of the body 1 is deformed to hit a dummy doll, and the response of the doll is measured. Thereafter, the carts 2 and 5 are moved at the same speed, and stopped by a shock absorber 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side collision simulator and a side collision simple simulator used for a side collision test of an automobile.

[0002]

[Prior art]

(1) In a conventional side collision test of an automobile, an actual vehicle collision test is performed in order to evaluate and develop occupant protection measures such as side collision airbags and side door beams. This side impact simulator test was performed on
Deformable Barrier (hereinafter referred to as MDB) is struck at a target speed by an impacting machine to hit and collide with a white tebody, which is a specimen at the time of collision, especially strength, rigidity of the door and airbag for side impact. Etc. will be carried out to evaluate the effect on dummy dolls in the actual vehicle and to research and develop a safe vehicle.

Conventionally, this main side collision test has been carried out by an actual vehicle collision test shown in FIG. That is, the actual vehicle 31 on which the dummy doll is set is left as a test piece,
A vehicle that simulates the front deformation characteristics, weight, and center of gravity of an actual vehicle (MD
B) 35 is pulled by the wire 14 with the winch 13, etc.,
When the vehicle reached a target speed on the road, the vehicle hit the side of the actual vehicle 31 and measured and evaluated the response of the dummy doll in the actual vehicle 31.

[0004]

The above-described actual vehicle collision test has the following problems. (1) Since an expensive real vehicle is destroyed every test, the development cost is high. (2) The running path becomes long (usually about 100 m), and a vast test site is required. (3) It is difficult to accurately hit the collision vehicle (MDB) at the target position of the actual vehicle.

Due to these problems, the side collision test due to an actual vehicle collision has a problem that the number of specimens increases, the test time increases, and the test cost increases due to a vast test site.

Therefore, a simulator capable of reducing the development cost of a side collision safety vehicle and solving the above problems is earnestly demanded worldwide. It is an object of the present invention to provide a side collision simulator for a side collision test of an automobile and a side collision simple simulator that can solve the above problems.

[0007]

[Means for Solving the Problems]

[First Means] A side collision simulator for a vehicle according to the present invention includes (A) a first table cart on which a white body as a test specimen of an automobile is mounted in a fixed state, and (B) an aluminum honeycomb in a fixed state. The second table cart mounted in (4), (C) a guide rail for moving the second table cart and the first table cart, and (D) pushing the second table cart through a piston equipped with a position sensor. Thus, the second table cart has a force applying device for giving a target speed, (E) a control device for controlling the force applying device, (F) a shock absorber, and (G) the second table. The cart moves at a constant speed after being pushed by the force applying device, and collides with the side surface of the specimen on the first table cart. And wherein the stopping the movement of the table cart.

Therefore, it operates as follows. In the above means, the second table cart 5 is brought into contact with the tip of the force applying portion of the force applying machine.

When the force applying portion is composed of a viston, the second table cart 5 and the piston are brought into contact with each other with the piston of the force applying machine at the stroke end on the contracting side.

Then, from this state, the second table cart 5
The second table cart 5 is pushed out by the operation of the piston of the force applying machine in order to give the target speed to the. Second table cart 5
When the acceleration of becomes 0 and reaches the maximum speed, the piston operation is stopped. Then, the second table cart 5
Moves away from the piston due to inertia and moves to a substantially uniform linear motion.

A first table cart 2 on which a white doll body with a dummy doll set thereon is fixed is left stationary, and the second table cart and the white te body collide sideways.

At this time, the side surface of the door of the white body is deformed, the dummy doll is hit, and the response of the dummy doll is measured. After that, the first table cart 2 and the second table cart 5 move at substantially the same speed, and finally are stopped by the shock absorber 9. [Second Means] A vehicle side collision simple simulator according to the present invention is (A) a dummy doll, (B) a restraining jig for suspending the dummy doll in the air, and (C) pre-deformed. (D) A force generator for giving a target velocity waveform to the door by pushing the door through a piston equipped with a position sensor, and (D) controlling the force generator And (F) a coupling jig for fixing the end of the piston of the force applying machine and the door to each other.

Therefore, it operates as follows. In the above means, the door deformation amount at the time of collision with the dummy doll is obtained from the results of the calculation by the finite element method (hereinafter referred to as FEM calculation), the side impact test, etc., and the deformed door and force machine Fix the piston tip with a connecting jig. Then, the piston of the force applying machine is set to the stroke end on the contraction side.

From this state, the piston of the force applying machine is controlled and operated so as to give the door a target velocity waveform obtained from the result of FEM calculation or the like. Behind this, the dummy doll is hung in the air from above by a restraint jig and is stationary, and the door and the dummy doll collide sideways.

At this time, the door hits the dummy doll, and the response of the dummy doll is measured. The rigidity and speed of the knocked door have a great influence on the response of the dummy doll.

Since the amount of deformation of the door at the time of collision with the MDB changes every moment, the rigidity of the door also changes every moment. This is the reason why importance is attached to the door rigidity when the door collides with the dummy doll, that is, the door deformation. Obtain the door deformation at this moment by FEM calculation,
It is for this reason that the door needs to be deformed in advance by a static jack or the like.

[0017]

1 to 4 show an embodiment of the present invention.
Shown in Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 is a block diagram of a system showing a first embodiment of an automobile collision simulator of the present invention.

In FIG. 1, reference numeral 7 is a force applying machine equipped with a piston 71. By driving the piston 71, the force applying device 7 can give a target speed to the second table cart 5 without gripping the second table cart 5.

A position sensor 72 (not shown) is attached to the piston 71 of the force applying device 7. A control device 8 for controlling the force applying device 7 is connected to the force applying device 7 via a control measurement cable 12.

The above-mentioned force generator 7, control device 8 and force generator 7
The position sensor attached to the piston 71 of 1 constitutes a force control system. Force generator 7 of this force control system
Are realized by, for example, an electro-hydraulic servo type actuator or an electrodynamic type actuator.

In front of the force applying machine 7, the second table cart 5 which is pushed by the force applying machine 7 and then moves at a constant speed, and the second table cart 5 are the specimens on the first table cart 2 ( A first table cart 2 and a first table cart 2 that move substantially together with the second table cart 5 after a side collision with a half white body 1 which is a half of the white table body divided by its center line. And a shock absorber 9 for stopping the second table cart 5 is provided.

The reason why the test piece 1 is a half-white tebody here is for cost reduction. A test piece mounting jig 3 is provided to mount the test piece 1 on the first table cart 2.

In addition, MDB which is a collision vehicle in an actual vehicle collision test
An aluminum honeycomb 4 and an aluminum honeycomb mounting jig 6 that are equivalent to those fixed to the tip of the MDB are attached to the second table cart 5, which is a vehicle equivalent to the above, and the rigidity, weight, and center of gravity are equivalent to those of the MDB. ing.

Therefore, the aluminum honeycomb 4 and the test piece 1 need to be replaced because they are broken each time a side impact simulation is performed. The first table cart 2 and the second table cart 5 have sliding devices 1 for smoothing the movement in the front-rear direction and restraining the movement in the vertical and horizontal directions.
1 is provided so that the user can move smoothly and safely along the guide rail 10 installed on the floor.

Next, a side collision simulation test by the side collision simulator for automobiles having the configuration of FIG. 1 will be described. First, the specimen 1 on which a dummy doll (not shown) is set is mounted on the first table cart 2 as the specimen mounting jig 3
Fix it through and leave it still.

Next, the aluminum honeycomb 4 is fixed to the second table cart 5 via the aluminum honeycomb mounting jig 6,
The piston 71 is brought into contact with the second table cart 5 in a state where the piston 71 of the force applying device 7 is at the stroke end on the contraction side.

From this state, in order to give a target speed to the second table cart 5, the force control system generates a control signal and performs feedback control. As a result, the piston 71 of the force applying device 7 moves and pushes the second table cart 5. Then, after the acceleration of the second table cart 5 becomes “0” and the maximum speed is reached, the control device 8 causes the piston 71 to move.
Stop the operation of.

As a result, the second table cart 5 moves away from the piston 71 and moves to a substantially constant velocity linear motion due to inertia. After that, a side collision occurs with the sample 1 on the first table cart 2.

At that time, the door or the like of the sample 1 is deformed and hit by the door being deformed, the response of the dummy doll is determined, and the measurement data is obtained. By analyzing and evaluating this measurement data, the safety of the side collision of the vehicle will be evaluated, and necessary measures will be taken.

After this collision, the first table cart 2 and the second table cart 5 move while being almost united.
The shock absorber 9 can be stopped safely without damage.

In order to bring the phenomenon after the collision closer to that of the actual vehicle collision test, the specimen 1 and the first table cart 2 are used.
And the total weight of the specimen mounting jig 3 according to the actual vehicle weight,
The friction between the guide rail 10 and the sliding device 11 may be matched with the friction between the tire of the actual vehicle and the road surface. [Second Embodiment] FIG. 2 shows a second embodiment of the present invention.
This will be described with reference to FIG.

The difference from the simulator shown in FIG. 1 is two points, that is, the specimen and the force applying machine. The test piece 21 of FIG. 2 is a full-white tebody, as can be seen from the drawing. In this case, the cost of the test piece is higher than that in FIG. 1, but improvement in test accuracy can be expected.

If the damage of the test piece 21 after the side impact test is not serious, there is a possibility that the test piece 21 can be mounted by rotating 180 ° and the side impact simulation can be performed on the remaining side surface.

Next, regarding the force applying device 27, in this example, the pneumatic force applying device 27 without feedback control is shown. That is, due to the action of the metering pin and the high-pressure air whose pressure receiving area changes according to the stroke of the piston 271, a fixed force waveform is produced, and the launch speed is also determined according to the weight of the second table cart 5.

Therefore, although there is a problem in adjustment and accuracy with respect to an arbitrary target speed, it is a method that has been used since a long time. The method of side impact simulation is similar to that of the simulator of FIG.

In the actual vehicle side impact test, the attitude direction and the speed direction of the MDB are different (27 in the US FMVSS standard).
However, in order to carry out this simulation, the test piece 1 or 21 and the aluminum honeycomb 4 are placed on the first table via the test piece mounting jig 3 or 23 and the aluminum honeycomb mounting jig 6, respectively. It may be attached diagonally to the cart 2 or the second table cart 5. [Third Embodiment] FIG. 3 is a block diagram showing a system of a vehicle collision simple simulator according to the present invention.

In FIG. 3, reference numeral 105 is a force applying machine equipped with a piston 151. This force machine 105 includes a piston 1
By driving 51, it is possible to give a target velocity waveform to the door that has been deformed in advance.

Usually, the velocity waveform of this door is obtained from FEM calculation or the like. In the piston 151 of the force machine 105,
A position sensor 72 (not shown) is attached.

In the force applying machine 105, a control device 106 for controlling the force applying machine 105 is provided with a control measurement cable 107.
Connected through. Force machine 105, control device 10
6, and the position sensor attached to the piston 151 of the force applying device 105 constitutes a force applying control system.

The force generator 105 of this force control system is
For example, it is realized by an electro-hydraulic servo type actuator or an electrodynamic type actuator. On the front side of the force applying machine 105, a dummy doll 101 is suspended from the top by a restraining jig 102 in the air and stands still.

Next, a side collision simple simulation test by the automobile side collision simple simulator of FIG. 3 will be described. First, the dummy doll 101 is attached to the restraint jig 102.
Thus, it is suspended from the top in the air in a predetermined position and posture and kept still.

Next, the door 103 is deformed in advance.
Is attached to the tip of the piston 151 of the force applying device 105.
4 and fix the piston 151 of the force applying device 105 to the contraction side stroke end.

From this state, the force control system generates a control signal to apply the target velocity waveform to the door, and performs feedback control. As a result, the piston 151 of the force applying device 105 moves and pushes the door 103.

After that, the door 103 collides with the dummy doll 101 sideways. At this time, the door 10 that has been deformed in advance
By being hit by 3, the response of the dummy doll 101 is determined, and the measurement data is obtained.

By analyzing and evaluating this measurement data, the side collision safety of the vehicle is evaluated, and necessary measures are taken. FIG. 4 shows an example of a target velocity waveform for the door.

[0046]

Since the present invention is constructed as described above, it has the following effects. (1) An inexpensive white body can be used instead of an expensive real vehicle. (2) Since a large output force machine such as electro-hydraulic servo type, electrodynamic type, or pneumatic piston type can be used, the acceleration distance can be shortened, and the stopping distance is also increased due to the powerful braking by the shock absorber. It can be shortened.

Therefore, it is possible to greatly reduce the running path length and the test site. (3) Since the first table cart 2 and the second table cart 5 can be moved along the guide rail, the accuracy of the aluminum honeycomb on the second table cart 5 to the target position of the test piece on the first table cart 2 can be improved. You can hit well. (4) In the side collision simple simulator, an inexpensive door may be used instead of an expensive real vehicle. (5) In the side collision simple simulator, the door can be accurately hit against the target location of the dummy doll. (6) Therefore, according to the present invention, reduction of the test cost,
The test apparatus (test site) can be made compact and the test accuracy can be improved, and the main problems of the conventional actual vehicle side impact test can be solved.

[Brief description of drawings]

FIG. 1 is a diagram showing a system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a system according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a system according to a third embodiment of the present invention.

FIG. 4 is a diagram showing an example of a target velocity waveform for a door.

FIG. 5 is an overall view showing a conventional actual vehicle side impact test.

[Explanation of symbols]

 1 ... Specimen (Half White Tebody), 2 ... 1st table cart, 3 ... Specimen mounting jig, 4 ... Aluminum honeycomb, 5 ... 2nd table cart, 6 ... Aluminum honeycomb mounting jig, 7 ... Forcer, 8 ... Control device, 9 ... Shock absorber, 10 ... Guide rail, 11 ... Sliding device, 12 ... Control measurement cable, 13 ... Winch, 14 ... Wire, 21 ... Specimen (white body), 23 ... Specimen mounting jig, 27 ... Forcer, 31 ... Specimen (actual vehicle), 35 ... MDB, 71 ... Piston, 72 ... Position sensor, 101 ... Dummy doll, 102 ... Restraining jig, 103 ... Deformed door , 104 ... Coupling jig, 105 ... Forcer, 106 ... Control equipment, 107 ... Control measurement cable, 151 ... Piston, 271 ... Piston.

Claims (2)

[Claims] 1. A first table cart (2) on which (A) a white tebody (1) as an automobile specimen is mounted in a fixed state and (B) an aluminum honeycomb (4) is mounted in a fixed state. 2 table carts (5), (C) equipped with guide rails (10) for moving the second table carts (5) and the first table carts (2), and (D) position sensors (72) A force machine (7) for giving a target speed to the second table cart (5) by pushing the second table cart (5) via the piston (71),
(E) A control device (8) for controlling the force applying device (7), and (F) a shock absorber (9),
(G) The second table cart (5) is provided with a force machine (7).
After being pushed by, it moves at a constant speed and collides with the side surface of the specimen (1) on the first table cart (2). (H) The shock absorber (9) is the first table after the collision. A simulator for a side collision of a vehicle, characterized by stopping the movements of the cart (2) and the second table cart (5). 2. A dummy doll (101), (B) a restraining jig (102) for suspending the dummy doll (101) in the air, and (C) a pre-deformed door. (103) and (D) a force machine (105) for giving a target velocity waveform to the door (103) by pushing the door (103) through a piston (151) equipped with a position sensor. , (E) a control device (106) for controlling the force applying device (105), and (F) a coupling jig for fixing the end of the piston (151) of the force applying device and the door (103). A simple simulator for a side collision of a vehicle, comprising (104).