JP3053518U - Automotive collision safety device - Google Patents

Abstract

(57) [Summary] [Problem] In the case of a collision at a relatively low speed in accordance with the speed of collision of a car, etc., good shock buffering can be performed even for a collision partner, etc. It is an object of the present invention to provide a vehicle collision safety device capable of sufficiently reducing the vehicle collision safety. Another object of the present invention is to provide a collision safety device for an automobile that can reliably operate an airbag when a bumper receives a strong collision against a collision at a high speed exceeding a certain level. SOLUTION: A bumper 10 provided on the body of an automobile is a combination of a first bumper 11 for self-safety and a second bumper 12 for collision partner safety, and the second bumper 12 is better than the first bumper 11 in a collision. It is provided on the front side of the collision of the first bumper 11 with a large cushioning property.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a vehicle collision safety device.

[0002]

[Prior art]

 Conventionally, various devices have been proposed as collision safety devices for automobiles. Bumpers attached to the front and rear of the vehicle are also one of the safety devices. In addition, airbags provided near the driver's seat and other seats in the vehicle body are also one of the crash safety devices.

[0003]

[Problems to be solved by the invention]

 The above-mentioned conventional bumper, which is one of the collision safety devices, absorbs the shock at the time of the collision and mainly aims at the safety of the automobile and its occupants. The safety of the car was not sufficiently secured and the consideration of the colliding person was not sufficient.

[0004] In view of the above-mentioned conventional situation, the present invention provides a good shock buffer for a collision partner in the case of a collision at a relatively low speed in accordance with the speed at which the vehicle collides. The purpose of the present invention is to provide an automobile collision safety device capable of sufficiently reducing the rate of personal injury. Another object of the present invention is to provide a vehicle collision safety device that can reliably operate an airbag when a bumper receives a strong collision against a collision at a speed higher than a certain level.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the vehicle collision safety device of the present invention uses a combination of a first bumper for self-safety and a second bumper for safety of a collision partner, and a second bumper provided on the body of the vehicle. The first characteristic is that the cushioning property at the time of collision is greater than that of the first bumper, and the cushioning property is provided on the front side of the collision of the first bumper. Further, in the collision safety device for a vehicle according to the present invention, in addition to the first feature, the second bumper includes a second bumper body serving as a cover on the collision front side of the first bumper, and the second bumper body. And a cushion body interposed between the first bumper and the first bumper. The third feature of the vehicle crash safety device of the present invention is that the cushion body is a spring in addition to the second feature. In addition, in addition to the features described in any one of the first to third aspects, the collision safety device for an automobile according to the present invention further includes a first bumper provided with a sensing sensor for operating an air bag, and a second bumper having a sensing actuator for the sensing sensor. An airbag for occupant safety is arranged in the vehicle body, and only when the second bumper receives a certain degree of pushing, the sensing actuator touches the sensing sensor and an airbag operating signal by the sensing sensor is provided. The fourth feature is to generate. In addition, the collision safety device for an automobile according to the present invention, in addition to the above-described fourth feature, wherein the sensing actuator comprises a projection attached to the inside of the second bumper body toward the first bumper, and the second bumper body is provided. A fifth feature is that when a predetermined amount or more of pressing is applied to the first bumper side, the sensor hits the sensing sensor and activates the sensing sensor.

According to the first feature, when a collision occurs, the collision first occurs with the second bumper combined with the collision front side of the first bumper. If the collision speed is relatively low, the shock-absorbing function of the second bumper, which provides greater cushioning at the time of the collision than the first bumper, for safety against the collision partner works satisfactorily. Therefore, it is possible to sufficiently reduce the impact on the collision partner. Therefore, in the case of a collision at a relatively low speed, it is possible to reduce the killing rate of a person who is the collision partner. On the other hand, when the collision speed is high, the large cushioning property of the second bumper cannot counter the strong impact force, and therefore the second bumper is easily pushed until it hits the first bumper, and the second bumper is substantially pushed. This means that the first bumper performs shock buffering. When the collision speed is high, the impact force exceeds the range that can reduce the harmfulness to the colliding person, such as the human body, but on the other hand, it is necessary to improve the safety of the user. The shock-absorbing function that responds to high-speed collisions, that is, high impacts by the bumper, will reduce the impact on automobiles. In the first aspect, the first bumper and the second bumper can be made of a rubber material, a plastic material, a metal material, or an appropriate combination thereof. In addition, the second bumper, which has a larger cushioning property than the first bumper, is made of a material with high elasticity in addition to the bumper material itself, and has a large cushioning property by being combined with a spring material or cushioning material. Is also good. In addition, the vehicles include various small, medium and large vehicles that run on the road such as passenger cars, trucks, and buses. The bumpers include those provided at the front of the vehicle body and those provided at the rear of the vehicle body. According to the second feature, in addition to the operation and effect of the first feature, the second bumper is formed into one unit in appearance by the second bumper main body that covers the collision front side of the first bumper. And the cushion body of the second bumper is interposed between the first bumper and the second bumper main body, so that the cushioning property of the cushion body is sufficiently increased. Can be increased. As a result, the second bumper becomes a bumper suitable for a collision at a relatively low speed, and at the time of a collision at a relatively low speed, it is possible to reduce an impact on a person who collides with the car, thereby reducing a casualty accident. The cushion body is not particularly limited in material, but may be a soft rubber material, a highly elastic material such as soft plastic, or various springs such as a leaf spring and a coil spring. According to the third feature, in addition to the function and effect of the second feature, by using a spring as the cushion body, a large cushioning property can be obtained with a sufficient restoring force of the spring. Various springs such as a coil spring and a leaf spring can be used as the spring. According to the fourth feature, in addition to the actions and effects of any of the first to third features, when the second bumper is pressed by a certain amount or more due to a collision, a sensing provided on the second bumper is provided. The actuator touches a sensing sensor provided on the first bumper. Then, the sensing sensor generates an air bag activation signal, which opens the air bag disposed in the vehicle body. Since the pushing movement of the second bumper due to the collision depends on the impact force according to the collision speed, the presence or absence of the operation of the air bag can be reliably performed according to the collision speed. According to the fifth feature, in addition to the actions and effects of the fourth feature, the sensing actuator is formed of a projection attached to the inside of the second bumper toward the first bumper, so that the second operation can be achieved. When the bumper receives a certain amount of pushing to the first bumper side due to a collision, the bumper surely hits the sensing sensor, and the sensing sensor is activated to open the airbag.

[0007]

[Embodiment of the invention]

 FIG. 1 is an external view showing an example of a passenger car equipped with the collision safety device according to the present invention, FIG. 2 is a horizontal sectional view of the bumper, FIG. 3 is a vertical sectional view of the bumper, and FIG. FIG. 5 is a front view of a main part of a passenger car provided with a collision safety device, and FIG. 6 is a diagram showing an example of a large vehicle provided with a collision safety device.

As shown in FIG. 1, bumpers 10 are provided at the front and rear of a vehicle body 1 such as a passenger car. The bumper 10 will be described with reference to FIGS. The bumper 10 includes a first bumper 11 on the vehicle body side and a second bumper 12 provided on the front side of the collision of the first bumper 11. The first bumper 11 has a role as a self-safety bumper, and is generally harder than the second bumper 12 so as to exert a good cushioning property against a collision having a high collision speed, that is, a large impact force. It is designed to help with high collision speeds and good collision mitigation for high impact collisions. The first bumper 11 can be made of a rubber material, a plastic material, or the like. A sensing sensor 11a is embedded in the first bumper 11. The sensing sensor 11a is a sensor for operating an airbag disposed in the vehicle body in the event of a collision. The sensor 11a is provided in the first bumper 11 to reliably detect collision information from the front side of the collision. It is buried with a wide area near the front side.

The second bumper 12 is a bumper for safety of a collision partner, and includes a second bumper main body 12a and a spring 12b as a cushion body. The second bumper body 12a is provided so as to cover the collision front side of the first bumper 11, and can be made of a hard rubber material, a plastic material, a metal material, or the like. As the spring 12b, a plurality of coil springs are used and are uniformly interposed between the inside of the second bumper main body 12a and the first bumper 11, so that the second bumper main body 12a has a uniform cushioning property. Therefore, the first bumper 11 is arranged and held on the front side of the collision. A projection 12c is provided at the center of each winding of the spring 12b, which is a coil spring, as a sensing actuator acting on the sensing sensor 11a. A plurality of the projections 12c are attached to the inside of the second bumper main body 12a so as to uniformly and widely project toward the first bumper 11 side. When the above-mentioned pushing motion is received, they are pushed together, break through a part of the first bumper 11, and come into contact with the sensing sensor 11a. By providing a plurality of protrusions 12c uniformly over a wide area, even if any part of the second bumper main body 12a has a collision, it is pushed together with the part where the collision has occurred, and comes into contact with the sensing sensor 11a. Thus, the air bag operation signal from the sensor 11a can be reliably generated. The sensing sensor 11a and the projection 12c are made of, for example, a metal material, and the projection 12c made of the same metal material comes into contact with the sensing sensor 11a embedded in the first bumper 11 made of a non-metal material. The change of the resistance, etc. can be used to generate an air bag activation signal by the sensing sensor 11a. As a matter of course, a mechanism other than the above mechanism may be used as a mechanism for causing the sensor 11a to generate an air bag activation signal by the projection 12c abutting the sensor 11a. Since the sensor 11a and the projection 12c need not be in contact with each other in a normal state, the sensor 11a does not necessarily have to be embedded in the first bumper 11. The first bumper 11 may be arranged on the front side of the collision with the projection 12c so as to be in a non-contact state in a normal state. Also, in this case, the projection 12c does not need to penetrate into the first bumper 11, so it does not need to be a projection. By contacting the sensor 11a, the state of the sensor 11a is changed, and the airbag activation signal is transmitted. Any sensing actuator that has the function to generate it may be used.

As the spring 12b, a spring having sufficient elasticity to exert sufficient cushioning properties when the collision speed is relatively low is used. As a result, in the event of a relatively low-speed collision, the impact force on a person colliding with the vehicle can be reduced, and the killing rate can be reduced. The relatively low collision speed is adjusted so as to exhibit good cushioning properties when the collision speed is, for example, less than about 15 to 20 km / h. The condition that the sensing actuator such as the protrusion 12c or the like strikes the sensing sensor 11a to generate an activation signal of the airbag may be, for example, a collision speed of about 15 to 20 km / h or more. The condition can be set so that the sensing actuator such as the protrusion 12c or the like hits the sensing sensor 11a.

Referring to FIGS. 4 and 5, a signal line 21 is connected to the airbag 20 disposed in the vehicle body 1 from the sensor 11a. As the mechanism of the airbag 20, a conventionally well-known mechanism can be used, and the mechanism itself is not special. However, in the present invention, the airbag 20 is arranged on the ceiling 1a of the vehicle body 1, and the airbag 20 is inflated downward from the ceiling and intervenes in front of the occupant by the airbag activation signal from the sensor 11a. It is structured so that it can come. By arranging the airbag 20 on the ceiling 1a, the degree of freedom in arranging the airbag 20 is large, and the space is wide, so a standard airbag that is placed in the center of a large airbag or handlebar It is possible to freely design and arrange a good airbag with different performance. In addition to the ceiling of the driver's seat, the signal line 21 can be shared on the ceiling of the front passenger seat and the ceiling of the rear seat without being restricted by the layout space.

FIG. 6 shows an example of a large vehicle equipped with a collision safety device. In the case of a large shared vehicle such as a bus, the airbag 20 is also arranged on the ceiling 1a of the passenger seat other than the driver's seat in consideration of passenger safety. In this case, since the ceiling 1a has a large space, for example, for a two-seater seat, an airbag having a size for two people can be designed and arranged so as to inflate and hang down from the ceiling. Of course, the same applies to the case of a normal passenger car. However, signal lines 21 are connected to the airbags 20 not only from the front bumper 10 but also from the rear bumper 10 of the vehicle body 1.

[0013]

[Effect of the invention]

 According to the present invention, the bumper provided on the vehicle body is composed of a first bumper for self-safety and a second bumper for safety of a collision partner. In combination with a bumper, the second bumper has a greater cushioning property at the time of collision than the first bumper and is provided on the front side of the first bumper in the collision. The shock-absorbing function of the second bumper, which provides greater cushioning at the time of the collision than the bumper, for the collision partner's safety works satisfactorily to not only buffer the vehicle but also sufficiently reduce the impact to the collision partner. Therefore, it is possible to reduce the killing rate of a person who is a collision partner. On the other hand, when the collision speed is high, the impact buffering function of the first bumper substantially operates, and the impact on the automobile and its occupants can be reduced. According to the second aspect of the present invention, in addition to the effect of the first aspect, the second bumper serves as a cover on the front side of the first bumper in the collision. And a cushion body interposed between the second bumper main body and the first bumper. By sufficiently increasing the cushioning properties of the cushion body, the second bumper as a whole has a relatively low speed. A collision buffer function suitable for a collision can be exerted, and the number of fatal or injured persons who collide with a car at a relatively low speed can be reduced. According to the collision safety device for an automobile according to the third aspect, in addition to the effect of the configuration according to the second aspect, since the cushion body is a spring, a large cushion with a sufficient restoring force of the spring is provided. Sex can be obtained. According to the vehicle collision safety device of the fourth aspect, in addition to the effect of the configuration according to any one of the first to third aspects, the first bumper is provided with a sensing sensor for operating an airbag, and the second bumper is provided with a second sensor. The bumper is provided with a sensing actuator for the sensing sensor, an airbag for occupant safety is arranged in the vehicle body, and the sensing actuator touches the sensing sensor only when the second bumper receives a certain degree of pushing. Since the airbag operation signal is generated by the detection sensor, the second bumper is pressed by a certain amount or more due to the collision, so that the detection actuator touches the detection sensor provided on the first bumper. The airbag located in the vehicle body can be reliably activated. When the collision speed is relatively low and the amount of pushing of the second bumper is less than the predetermined value, unnecessary activation of the airbag can be reliably prevented. According to the collision safety device for a vehicle described in claim 5, in addition to the effect of the configuration described in claim 4, the sensing actuator is located inside the second bumper body toward the first bumper. When the second bumper is pushed to the first bumper side by a predetermined amount or more due to a collision, the protrusion can reliably operate the sensing sensor to open the airbag.

[Brief description of the drawings]

FIG. 1 is an external view showing an example of a passenger car provided with a collision safety device according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the bumper according to the embodiment of the present invention.

FIG. 3 is a vertical sectional view of the bumper according to the embodiment of the present invention.

FIG. 4 is a side view of a main part of the passenger car provided with the collision safety device according to the embodiment of the present invention;

FIG. 5 is a front view of a main part of a passenger car provided with a collision safety device according to an embodiment of the present invention.

FIG. 6 is a diagram of a heavy-duty vehicle provided with a collision safety device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 1a Ceiling 10 Bumper 11 1st bumper 11a Sensor 12 Second bumper 12a 2nd bumper main body 12b Spring 12c Projection 20 Air bag

Claims (5)

[Utility model registration claims] 1. A bumper provided on a body of an automobile is a combination of a first bumper for self-safety and a second bumper for safety of a collision partner, and the second bumper has a greater cushioning property at the time of collision than the first bumper. And a collision safety device for a vehicle, wherein the collision safety device is provided on the front side of the collision of the first bumper. 2. The second bumper includes a second bumper main body serving as a cover on the collision front side of the first bumper, and a cushion body interposed between the second bumper main body and the first bumper. Item 4. The collision safety device for an automobile according to Item 1. 3. The collision safety device for an automobile according to claim 2, wherein the cushion body is a spring. 4. A first bumper is provided with a sensing sensor for operating an airbag, a second bumper is provided with a sensing actuator for the sensing sensor, and an airbag for occupant safety is disposed in the vehicle body. The vehicle according to any one of claims 1 to 3, wherein the sensing actuator touches the sensing sensor and generates an airbag actuating signal by the sensing sensor only when a certain amount of pushing is received. Collision safety device. 5. The sensing actuator comprises a protrusion attached to the inside of the second bumper body toward the first bumper, and when the second bumper body receives a certain amount of pressing movement on the first bumper side. 5. The collision safety device for a motor vehicle according to claim 4, wherein the collision detection device is operated by activating the detection sensor.