JP2008162344A - Vehicle structure - Google Patents

Abstract

Provided is a vehicle body structure capable of suppressing deformation of a passenger compartment by efficiently transmitting a collision load from a bumper reinforcement to a side member at the time of a small overlap collision.
In a vehicle-to-vehicle small overlap collision, a protrusion member (slip suppression means) 4 provided in a bumper reinforcement 3 of each vehicle suppresses the movement of each vehicle outward in the vehicle width direction. The state where the vehicles that collided face each other is maintained. Thus, in order to prevent the vehicle from sliding sideways relative to the collision target vehicle and colliding from the direction in which the force cannot be sufficiently transmitted to the side member 2, the collision load is efficiently transmitted to the side member 2. Deformation can be suppressed.
[Selection] Figure 2

Description

  The present invention relates to a vehicle structure.

2. Description of the Related Art Conventionally, as a structure related to a vehicle body structure, a structure that suppresses deformation of the body at the time of a small overlap collision that collides with a front or rear end portion of the vehicle has been disclosed. This vehicle structure has a configuration in which an outer portion in the vehicle width direction of the bumper reinforcement is inclined toward the inside of the vehicle, and the inclined bumper reinforcement region is connected to the power unit and the vehicle body skeleton member as the collision absorbing material. Yes (see, for example, Patent Document 1). With such a configuration, the collision load of the small overlap collision is directly transmitted to the shock absorbing member, and the collision load is induced to move inward of the vehicle, and moves forward while moving away from the collision object in the lateral direction. By moving, the amount of vehicle body deformation is reduced.
JP 2004-66932 A

  However, in such a structure, in the case of a small overlap collision, when a collided object slides and moves outward in the vehicle width direction relative to the host vehicle, a wheel member that is not a vehicle body skeleton member is used. Thus, there is a fear that the collision load is input to the passenger compartment and the passenger compartment is greatly deformed.

  Accordingly, the present invention has been made to solve such a technical problem, and at the time of a small overlap collision, the collision load is efficiently transmitted from the bumper reinforcement to the side member. It aims at providing the vehicle body structure which can suppress a deformation | transformation of this.

That is, the vehicle body structure according to the present invention includes a pair of left and right side members extending in the vehicle longitudinal direction,
A bumper reinforcement connected to the front or rear end of the pair of left and right side members and extending in the vehicle width direction, the vehicle front-rear direction outside of the bumper reinforcement, and the side members and the bumper in Slip prevention means provided on the outer side in the vehicle width direction than the coupling portion of the hosement, and restraining the collision target object from sliding and moving relatively outward in the vehicle width direction at the time of a front or rear collision. Composed.

  With this configuration, in the case of a vehicle-to-vehicle small overlap collision, the slip suppression means provided in each vehicle suppresses the movement of each vehicle outward in the vehicle width direction, thereby maintaining the state in which the vehicles that collided face each other. It is. Accordingly, in order to prevent the vehicle from sliding sideways relative to the collision target vehicle and colliding from the direction in which the force cannot be sufficiently transmitted to the side member, the collision load is efficiently transmitted to the side member, and the vehicle compartment is deformed. Can be suppressed. Furthermore, since such a configuration prevents a collision load from being input to the vehicle compartment via the wheel member or the like, the number of damaged parts of the vehicle body can be reduced and the repair cost can be reduced.

  Here, in the vehicle body structure according to the present invention, the slip suppression means preferably includes a protruding member protruding outward in the vehicle front-rear direction. Thereby, in the case of a vehicle-to-vehicle small overlap collision, the protrusions provided in each vehicle are joined to suppress the vehicle from moving outward in the vehicle width direction relative to the collision target vehicle. be able to. Further, it is more preferable that the projecting member has a bent portion whose tip is bent inward in the vehicle width direction. With this configuration, the bent portions can be more firmly engaged with each other and the vehicle can be maintained in a directly-facing state. Therefore, the vehicle can be further suppressed from moving outward in the vehicle width direction relative to the collision target vehicle. At the same time, the collision load is efficiently transmitted to the side member, and deformation of the passenger compartment can be suppressed.

  In the vehicle body structure according to the present invention, it is further preferable that the slip suppression means includes a locking member that is provided around the protruding member and entangles the collision target. Thereby, the engagement location of vehicles increases and the opportunity which prevents the movement to the vehicle width direction outer side of a vehicle can be increased.

  The vehicle body structure according to the present invention preferably includes a sensor that detects a front or rear collision, and the slip suppression means includes an electromagnet that generates a magnetic force when the sensor detects a collision. With this configuration, in the case of a vehicle-to-vehicle small overlap collision, the electromagnet of the collision target vehicle is attracted to the electromagnet of the own vehicle, so that the vehicle moves relatively outward in the vehicle width direction with respect to the collision target vehicle. Can be prevented.

  According to the present invention, at the time of a small overlap collision, the collision load can be efficiently transmitted from the bumper reinforcement to the side member, and deformation of the passenger compartment can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
First, a first embodiment of the present invention will be described. FIG. 1 is a perspective view showing a part of an internal structure of a vehicle having a vehicle structure according to the present embodiment, and FIG. 2 is an enlarged view of a front portion of the vehicle in FIG. The vehicle structure according to the present embodiment is a structure that suppresses deformation of the passenger compartment at the time of a small overlap collision. As shown in FIG. 1, a front side member (side member) 2 and a bumper reinforcement 3 are provided. The projection member (slip suppression means) 4 is provided.

  The front side member 2 is a pair of left and right bone-shaped reinforcing members that are disposed on the floor portion of the vehicle so as to sandwich an engine (not shown) and the like, and extend in the vehicle front-rear direction. It functions as a member that absorbs collision load. Further, the vehicle has a function of transmitting a collision load that cannot be absorbed by the front side member 2 to another vehicle body skeleton member 10 joined to the front side member 2.

A bumper reinforcement 3 is joined to the front side end portion of the front side member 2 at joints A ₁ and A ₂ . The bumper reinforcement 3 is a bone-shaped reinforcing member that is disposed inside the bumper 11 and extends in the vehicle width direction along the bumper 11. When a frontal collision occurs, the bumper reinforcement 3 receives a collision load input to the vehicle inside. It functions as a member that transmits to the side member 2.

In the bumper reinforcement 3, the protruding members 4 are arranged on the outer side in the vehicle width direction from the joint portions A ₁ and A ₂ . The protruding member 4 is disposed on the side of the bumper reinforcement 3 on the front side of the vehicle, and has a function of preventing the collision target from sliding and moving relative to the own vehicle relative to the vehicle width direction. ing. Therefore, the protruding member 4 is firmly disposed on the bumper reinforcement 3 and is welded, for example. Further, the protruding member 4 is made of a material that can withstand a collision load, and is made of, for example, the same material as the bumper reinforcement 3. Further, as shown in FIG. 2, the protruding member 4 has a bent portion 5 in which the tip of the protruding member 4 is bent inward in the vehicle width direction. Thereby, a gap is formed between the bent portion 5 of the protruding member 4 and the bumper reinforcement 3. The gap is formed to be equal to or larger than the thickness of the bent portion 5 so that the protruding member 4 of the collision target vehicle can enter the gap.

  Next, the effect of the vehicle structure according to the first embodiment will be described. FIG. 3 is a plan view in the case where a vehicle having the vehicle structure according to the present embodiment has a small overlap collision, and illustrates transmission of a collision load. FIG. 8 is a plan view when a vehicle having a conventional vehicle structure has a small overlap collision.

  The movement of each vehicle when a vehicle having a conventional vehicle structure has a small overlap collision will be described with reference to FIG. When the vehicles 80 and 81 face each other and collide at the front right end of the vehicle, the vehicle 80 inputs a collision load F80 from the front right end toward the inside of the vehicle 81. On the other hand, the vehicle 81 inputs the collision load F81 from the front right end toward the inside of the vehicle 80. Since the collision loads F80 and F81 are not parallel to the traveling direction of the vehicles 81 and 80, respectively, the collision loads F80 and F81 have components orthogonal to the traveling direction, that is, components in the vehicle width direction (F80b and F81b). Thereby, the vehicles 81 and 80 move forward while sliding in the vehicle width direction in a state where the vehicles are in contact with each other by the collision loads F80 and F81 (dotted lines in the figure). Due to such movement, a collision load is input from a tire portion or the like where it is difficult to absorb or transmit the load, and the side surface of the vehicle body or the passenger compartment may be deformed. The collision load F80 can be expressed by the sum of the component F80a in the traveling direction and the component F80b in the vehicle width direction, and the same applies to F81.

  On the other hand, the movement of each vehicle when the vehicle having the vehicle structure of the first embodiment collides with a small overlap will be described with reference to FIG. When the vehicles 30 and 31 run facing each other and collide at the front right end of the vehicle, the vehicle 30 inputs the collision load F30 from the front right end toward the inside of the vehicle 31. On the other hand, the vehicle 31 inputs the collision load F31 from the front right end toward the inside of the vehicle 30. Since the collision loads F30 and F31 at this time are not parallel to the traveling direction of the vehicles 31 and 30, respectively, they have components in the direction orthogonal to the traveling direction, that is, components in the vehicle width direction (F30b and F31b). Yes. Accordingly, the vehicles 31 and 30 try to move forward while sliding in the vehicle width direction in a state where the vehicles are in contact with each other due to the collision loads F30 and F31, but the protruding members 4 provided on the vehicles 30 and 31 are engaged with each other. The components of the collision loads F30b and F31b are canceled out. Further, in the case where they are not completely canceled out, the vehicle 30 and the vehicle 31 are united to rotate. Thereby, after the collision, the vehicle 30 and the vehicle 31 do not slide relative to each other in the vehicle width direction, and the vehicle 30 and the vehicle 31 are kept facing each other. Therefore, the collision loads F30 and F31 are: It is efficiently transmitted to the front side member 2 via the bumper reinforcement 3. The collision load F30 can be expressed by the sum of the component F30a in the traveling direction and the component F30b in the vehicle width direction, and the same applies to F31.

  As described above, according to the vehicle structure of the first embodiment, when the vehicle-to-vehicle small overlap collision occurs, the protruding member 4 provided in each vehicle 30, 31 moves outward in the vehicle width direction of each vehicle 30, 31. By restraining the vehicle, the state in which the vehicles 30 and 31 having collided face each other is maintained. Accordingly, the collision loads F30 and F31 are applied to the front side member 2 in order to prevent the vehicles 30 and 31 from sliding sideways with respect to the collision target vehicle and colliding from the direction in which the force cannot be sufficiently transmitted to the front side member 2. It is transmitted efficiently and deformation of the passenger compartment can be suppressed. Furthermore, since such a configuration prevents a collision load from being input to the vehicle compartment via the wheel member or the like, the number of damaged parts of the vehicle body can be reduced and the repair cost can be reduced.

(Second embodiment)
Next, a second embodiment of the present invention will be described. FIG. 4 is a perspective view showing a part of the internal structure of the vehicle having the vehicle structure according to the second embodiment. The vehicle structure according to the present embodiment is configured in substantially the same manner as the vehicle structure according to the first embodiment, and only the shape of the protruding member is different.

As shown in FIG. 4, the protruding member 40 of the second embodiment includes a side surface on the vehicle front side of the bumper reinforcement 3 and joints A ₁ and A between the bumper reinforcement 3 and the front side member 2. _The vehicle is disposed on the outer side in the vehicle width direction than _2, and has a function of preventing the collision target from sliding and moving relative to the own vehicle in the outer side in the vehicle width direction. Therefore, the protruding member 40 is firmly disposed on the bumper reinforcement 3 and is welded, for example.

  The difference from the first embodiment is that the projecting member does not have the bent portion 5, and even in such a configuration, each vehicle has a vehicle-to-vehicle small overlap collision. The protrusion member 40 provided suppresses the movement of each vehicle in the vehicle width direction outer side, so that the collision vehicles are kept facing each other, and the vehicle slides relatively with respect to the collision target vehicle to cause the front side member 2 to move. In order to prevent a collision from a direction in which the force cannot be sufficiently transmitted to the front side, the collision load is efficiently transmitted to the front side member 2, and deformation of the passenger compartment can be suppressed.

(Third embodiment)
Next, a third embodiment of the present invention will be described. FIG. 5 is a perspective view showing a part of the internal structure of the vehicle having the vehicle structure according to the third embodiment. The vehicle structure according to the present embodiment is configured in substantially the same manner as the vehicle structure according to the first embodiment, and is different in that the shape of the protruding member 50 and a wire member (locking member) 51 are provided.

As shown in FIG. 5, the protruding member 50 is wider than the side surface of the bumper reinforcement 3 on the vehicle front side and the joints A ₁ and A ₂ between the bumper reinforcement 3 and the front side member 2. It has the bending part 51 which is arrange | positioned in the direction outer side and the front-end | tip of the projection member 50 bent to the vehicle width direction inner side. For example, the cross section of the bent portion 51 of the protruding member 50 is configured to be smaller than the mesh of the wire member described later. In addition, a gap is formed between the bent portion 51 of the protruding member 50 and the bumper reinforcement 3. The gap is formed to be equal to or larger than the thickness of the bent portion 51 of the projection 50 so that the projection member 50 of the collision target vehicle can enter the gap.

  A wire member 51 is installed so as to cover the protrusion 50. The wire member 51 is a member made of a net-like wire. The mesh size of the wire member 51 is formed larger than the cross-sectional area of the bent portion 51 of the protruding member 50, for example. The wire member 51 is firmly installed on the bumper reinforcement 3, and is welded to the bumper reinforcement 3, for example. The wire member 51 meshes with the protrusion 50 to be collided, and suppresses relative side slip of the vehicle in a small overlap collision.

  The difference from the first embodiment is that the shape of the protruding member 50 and the wire member 51 are provided. Even in such a configuration, each vehicle has a vehicle-to-vehicle small overlap collision. The protrusion member 50 provided suppresses the movement of each vehicle toward the outside in the vehicle width direction so that the collision vehicles are kept facing each other, and the vehicle slides relatively with respect to the collision target vehicle to cause the front side member 2 to move. In order to prevent a collision from a direction in which the force cannot be sufficiently transmitted to the front side, the collision load is efficiently transmitted to the front side member 2, and deformation of the passenger compartment can be suppressed. Furthermore, since the wire member 51 has a large number of meshes, the number of engaging portions of the protruding member 50 increases, so that the opportunity to suppress deformation of the passenger compartment can be increased.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. The vehicle structure according to the present embodiment is configured in substantially the same manner as the vehicle structure according to the first embodiment, and is different in that it includes a sensor 60 and an electromagnet (slip suppression means).

  First, the configuration of a vehicle having the vehicle structure according to the present embodiment will be described with reference to FIG. As shown in FIG. 6, the vehicle having the vehicle structure according to the present embodiment includes a sensor 60 that detects a collision of the vehicle. The sensor 60 is disposed at an optimum position for detecting the impact of the collision, and is installed at, for example, the front end of the vehicle. The sensor 60 acquires acceleration and outputs it to the ECU 61. Here, the ECU (Electronic Control Unit) is an electronic control unit, and includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, and the like. Yes. The ECU 61 includes a collision determination unit 62 and a current supply unit 63. The collision determination unit 62 has a function of determining the occurrence of a collision based on the acceleration input from the sensor 60 and a function of transmitting a signal to the current supply unit 63 when it is determined that a collision has occurred. The current supply unit 63 has a function of supplying a predetermined current to the electromagnet 64 when receiving a signal from the collision determination unit 62.

  The electromagnet 64 is, for example, a magnet that temporarily generates a magnetic force by winding a coil around a magnetic material core and energizing it. The electromagnet 64 is disposed on the vehicle front side surface of the bumper reinforcement, and on the outer side in the vehicle width direction than the joint portion between the bumper reinforcement and the front side member, like the protruding member of the first embodiment. Is done.

  Next, the operation of the vehicle having the vehicle structure according to the present embodiment will be described with reference to FIG. The control process shown in FIG. 7 is started, for example, when the ignition is turned on, and is repeatedly executed at a predetermined cycle. When the process starts, an acceleration input process is started (S10). The process of S10 is a process of inputting the acceleration acquired by the sensor 60. When the process of S10 ends, the process proceeds to a collision determination process (S12).

  The process of S12 is a process executed by the collision determination unit 62, and is a process of determining whether or not the vehicle has collided. This determination is made based on, for example, whether or not the acceleration input in S10 is greater than a predetermined value. If the acceleration input in S10 is equal to or smaller than the predetermined value, the control process in FIG. When the acceleration input in the process of S10 is larger than a predetermined value, the process proceeds to a current supply process (S14).

  The process of S14 is a process executed by the current supply unit 63, and is a process of sending a predetermined current to the electromagnet. When the process of S14 ends, the process of FIG. 7 ends.

  The difference from the first embodiment is that the sensor 60 and the electromagnet 64 are provided. Even in such a configuration, the sensor 60 detects the collision at the time of a small overlap collision between the vehicle and the vehicle. As a result, magnetic force is generated in the electromagnets 64, so that the electromagnets 64 provided in the vehicles are attracted to each other to prevent the vehicles from moving outward in the vehicle width direction, and the collision vehicles are kept facing each other. For this reason, in order to prevent the vehicle from sliding sideways relative to the collision target vehicle and colliding from the direction in which the force cannot be sufficiently transmitted to the front side member, the collision load is efficiently transmitted to the front side member. Deformation can be suppressed.

  Each embodiment mentioned above shows an example of the vehicle structure concerning the present invention. The vehicle structure according to the present invention is not limited to the vehicle structure according to each of these embodiments, and the vehicle structure according to the embodiment may be modified or otherwise changed without changing the gist described in each claim. It may be applied to a thing.

  For example, in each of the above-described embodiments, the front portion of the vehicle has been described. However, even when the present invention is adopted for the rear portion, the same effect as that obtained when it is adopted for the front portion can be obtained.

It is a perspective view showing a part of internal structure of a vehicle which has a vehicle structure concerning a first embodiment. It is an enlarged view of the vehicle front part of FIG. It is a top view when the vehicle which has the vehicle structure of FIG. 1 collides with a small overlap. It is a perspective view which shows a part of internal structure of the vehicle which has a vehicle structure which concerns on 2nd embodiment. It is a perspective view which shows a part of internal structure of the vehicle which has a vehicle structure which concerns on 3rd embodiment. It is a block diagram of the vehicle which has the vehicle structure which concerns on 4th embodiment. It is a flowchart which shows operation | movement of the vehicle which has the vehicle structure of FIG. It is a top view when the vehicle which has the conventional vehicle structure collides with a small overlap.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Front side member (side member), 3 ... Bumper reinforcement, 4, 40, 50 ... Projection member, 5 ... Refraction part, 51 ... Wire member (locking member), 60 ... Sensor, 64: Electromagnet.

Claims (5)

A pair of left and right side members extending in the longitudinal direction of the vehicle;
A bumper reinforcement coupled to the vehicle front side or rear side end of the pair of left and right side members and extending in the vehicle width direction,
The bumper reinforcement is provided in the vehicle longitudinal direction outside of the bumper reinforcement and in the vehicle width direction outside of the connecting portion of the side member and the bumper reinforcement. Slip prevention means for restraining the sliding and moving relative to the outside,
Vehicle structure with   The vehicle structure according to claim 1, wherein the slip suppression means includes a protruding member protruding outward in the vehicle front-rear direction.   The vehicle structure according to claim 2, wherein the protruding member has a bent portion whose tip is bent inward in the vehicle width direction.   The vehicle structure according to claim 2, wherein the slip suppression means includes a locking member that is provided around the protruding member and entangles the collision target. Equipped with sensors to detect forward or backward collisions,
The slip suppression means includes an electromagnet that generates magnetic force when the sensor detects a collision;
The vehicle structure according to claim 1.

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