JP5472995B2 - Body structure in vehicles - Google Patents

Description

  The present invention relates to a vehicle body structure in a vehicle in which vibration generated when the vehicle travels is structurally controlled in a tunnel formed on a floor panel.

  Conventionally, there is a vehicle body structure in the vehicle described in Patent Document 1 below. According to this publication, the vehicle extends in the width direction of the vehicle body and is disposed at the front end portion of the passenger compartment, and the pillar reinforcing members whose longitudinal ends are supported by the left and right front pillars, and the width of the vehicle body. Panel that extends in the vertical direction and forms the front surface of the passenger compartment, a floor panel that extends from the lower edge of the dash panel to the rear of the vehicle body to form the lower surface of the passenger compartment, and the vehicle body in the floor panel A tunnel that is formed so as to bulge upward and extends in the front-rear direction of the vehicle body and a steering handle that is supported by the pillar reinforcing member are provided at the center in the width direction. Further, a front cowl is provided in front of the pillar reinforcing member, which extends in the width direction of the vehicle body and whose longitudinal ends are supported by the left and right front pillars. The upper end of the dash panel is provided on the front cowl. The edges are joined.

  Further, the vehicle includes a reinforcing material for reinforcing the dash panel and a brace material for connecting the pillar reinforcing member and the tunnel to each other in the vehicle compartment. A predetermined rigidity is given around the pillar reinforcing member by the reinforcing material and the brace material.

  When the vehicle travels, the vehicle body including the pillar reinforcing member generally tends to vibrate as a whole due to the impact force from the traveling road surface. For this reason, since the steering handle supported by the pillar reinforcing member also tends to vibrate, a smooth steering operation of the steering handle may be hindered by the vibration.

  However, in the above-described conventional technology, a predetermined rigidity is provided around the pillar reinforcing member by the reinforcing material or the brace material, so that the pillar reinforcing member is prevented from vibrating when the vehicle travels. It is considered that vibration of the steering handle is also suppressed, and a smooth steering operation can be obtained with this steering handle.

JP 2002-145124 A

  By the way, as described above, in order to obtain a smooth steering operation for the steering handle, when the above-described reinforcing material or brace material is provided, the number of parts of the vehicle body in the vehicle increases, and the configuration is complicated. At the same time, the passenger compartment may be unnecessarily narrowed.

  The present invention has been made paying attention to the above situation, and an object of the present invention is that the steering handle vibrates even when the vehicle body vibrates due to the impact force from the traveling road surface when the vehicle is traveling. It is to suppress and ensure a smooth operation of the steering handle, and to achieve this with a simple configuration and without unnecessarily narrowing the passenger compartment.

According to the first aspect of the present invention, the vehicle body 2 extends in the width direction of the vehicle body 2 and is separated from the vehicle body 2 in the front-rear direction, and is disposed at the front end portion of the vehicle compartment 4. A front cowl 24 and a pillar reinforcing member 25, a dash panel 28 extending in the width direction of the vehicle body 2 and extending downward from the front cowl 24 to form the front surface of the vehicle compartment 4, and a lower edge of the dash panel 28 A floor panel 29 extending from the rear of the vehicle body 2 to form the lower surface of the vehicle compartment 4 and formed in the center of the floor panel 29 in the width direction of the vehicle body 2 so as to bulge upward and extend in the front-rear direction. a tunnel 30 that is, a steering wheel 45 which is supported by the pillar reinforcement member 25, the Furoapa behind than the pillar reinforcement members 25 Is supported on Le 29, in a vehicle provided with a front seat 42, 42 the passenger is seated,
Among the amplitudes A of the vertical vibrations Vp generated in the longitudinal portions of the tunnel 30 when the vehicle 1 is traveling, the amplitude A of the midway portion 30a in the longitudinal direction of the tunnel 30 below the pillar reinforcing member 25 is substantially maximum. The rigidity of the rear side 30b of the tunnel 30 behind the pillar reinforcing member 25 is larger than the rigidity of the front side 30c of the tunnel 30 ahead of the pillar reinforcing member 25 so that the amplitude Amax is obtained. It is the vehicle body structure in the vehicle characterized by these.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to a first aspect of the present invention, there is provided a front cowl that extends in the width direction of the vehicle body and is disposed at a front end portion of the vehicle compartment so as to be separated in the front-rear direction of the vehicle body. A pillar reinforcing member, a dash panel that extends in the width direction of the vehicle body and extends downward from the front cowl to form the front surface of the vehicle compartment, and extends from the lower edge of the dash panel to the rear of the vehicle body and extends to the rear surface of the vehicle compartment. A floor panel formed in the center of the floor panel in the width direction of the vehicle body and bulging upward and extending in the front-rear direction, and a steering handle supported by the pillar reinforcing member , it is supported on the floor panel in the rear than the pillar reinforcement member, the vehicle odor and a front seat passenger sits ,
The pillar reinforcement so that the amplitude of the midway portion in the longitudinal direction of the tunnel below the pillar reinforcement member is substantially the maximum amplitude among the amplitudes of the vertical vibrations generated in the longitudinal portions of the tunnel when the vehicle is traveling. The rigidity of the rear side of the tunnel behind the member is made larger than the rigidity of the front side of the tunnel ahead of the pillar reinforcing member.

Here, as described above, when the vehicle is running, the midway portion of the tunnel has an approximately maximum amplitude. The midway portion of the tunnel is a portion located below the pillar reinforcing member and is normally driven. Sometimes, it is the part located in front of the occupant seated on the front seat in the passenger compartment. Therefore, the larger the amplitude of vertical vibration in the middle portion of the tunnel affects directly on Keno members is prevented, ride the vehicle it can be kept good.

  On the other hand, the tunnel is formed in a floor panel, and the dash panel is connected to the floor panel. For this reason, the dash panel tends to vibrate greatly in conjunction with the large amplitude vertical vibration in the middle part of the tunnel, and this vibration is sequentially generated from the dash panel by the front cowl, the front pillar, the pillar reinforcing member, And may be transmitted to the steering wheel.

  However, the dash panel extends in the width direction of the vehicle body as described above and extends downward from the front cowl, and its rigidity in the plate thickness direction is relatively low. For this reason, the dash panel tends to vibrate smoothly back and forth in the longitudinal direction of the vehicle body, which is the plate thickness direction, in conjunction with the vertical vibration of the middle part of the tunnel.

  Therefore, it is effectively absorbed by the longitudinal vibration of the dash panel that the large-amplitude vertical vibration in the middle part of the tunnel reaches the front cowl. For this reason, it is suppressed that the steering handle vibrates in conjunction with the middle part of the tunnel, and a smooth steering operation for the steering handle is ensured.

  Further, ensuring the smooth steering operation for the steering handle described above is achieved by connecting the reinforcing material for reinforcing the dash panel as shown in the prior art, the pillar reinforcing member, and the front side of the tunnel. This can be achieved without providing a brace material. Therefore, the above-described smooth steering operation can be ensured with a simple configuration and without unnecessarily narrowing the passenger compartment.

It is a side surface fragmentary sectional view of a vehicle. It is a plane partial sectional view of vehicles. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2.

  The present invention relates to a vehicle body structure in a vehicle, and even when the vehicle body vibrates due to an impact force from a traveling road surface when the vehicle is traveling, the steering handle is restrained from being vibrated to ensure smooth operation of the steering wheel. In order to achieve the object of achieving this, and with a simple configuration, without being unnecessarily narrowed, the form for carrying out the present invention is as follows.

That is, the vehicle extends in the width direction of the vehicle body and is disposed at the front end portion of the passenger compartment away from the vehicle body in the front-rear direction. A dash panel that extends in the width direction of the vehicle body and extends downward from the front cowl to form the front of the vehicle compartment, and extends from the lower edge of the dash panel to the rear of the vehicle body to form the lower surface of the vehicle compartment and the floor panel which, in the central portion of the vehicle body in the width direction of the floor panel, the tunnel is formed to extend in the front-rear direction together with the bulges upward, and a steering handle that is supported by the pillar reinforcement member, the And a front seat supported by the floor panel behind the pillar reinforcing member and on which an occupant sits .

  The pillar reinforcement so that the amplitude of the midway portion in the longitudinal direction of the tunnel below the pillar reinforcement member is substantially the maximum amplitude among the amplitudes of the vertical vibrations generated in the longitudinal portions of the tunnel when the vehicle is traveling. The rigidity of the rear side of the tunnel behind the member is made larger than the rigidity of the front side of the tunnel ahead of the pillar reinforcing member.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1.

  The vehicle body 2 of the vehicle 1 is not shown in a vehicle body frame 3 constituting a lower portion thereof, a vehicle body 5 that is supported on the vehicle body frame 3 and whose interior is a compartment 4, and a front portion of the vehicle body frame 3. And a pair of left and right front wheels 8 supported by a suspension device 7 at the rear part of the vehicle body frame 3.

  The vehicle body frame 3 includes a pair of left and right side members 12 and 12 extending in the front-rear direction of the vehicle body 2 and a plurality of cross members 13 before and after the side members 12 and 12 are joined to each other.

  The vehicle body 5 is positioned on the outer side of each side member 12 and extends in the front-rear direction of the vehicle body 2, and a pair of left and right side sills 16, 16 supported by the side member 12. A front, center, and rear pillars 17 to 19 projecting upward, and a roof 20 that is supported by upper ends of the pillars 17 to 19 and forms the upper surface of the vehicle compartment 4 are provided. In each side part of the vehicle body 2, spaces between the pillars 17 to 19 are door openings 21 for side doors.

  The vehicle body 5 includes a front cowl 24 and a pillar reinforcing member 25 that extend in the width direction of the vehicle body 2 and are slightly separated from each other in the front-rear direction of the vehicle body 2. 24 and the end portions in the longitudinal direction of the pillar reinforcing member 25 are firmly supported by the left and right front pillars 17 and 17, respectively.

  The front cowl 24 is made of sheet metal, and each section in the longitudinal direction is U-shaped and has sufficient strength and rigidity, and constitutes a skeleton member at the front portion of the vehicle body 2. The pillar reinforcing member 25 is called a pillar-to-pillar tube. Each cross section in the longitudinal direction forms a circular pipe shape, has sufficient strength and rigidity, and reinforces each front pillar 17. .

  The vehicle body 5 extends in the width direction of the vehicle body 2, extends in the vertical direction, and is formed into a flat shape as a whole to form the front surface of the vehicle compartment 4. A sheet metal floor panel 29 that extends from the lower end edge to the rear of the vehicle body 2 to form the lower surface of the vehicle compartment 4 and bulges upward in the center of the floor panel 29 in the width direction of the vehicle body 2. A pair of left and right reinforcements that extend in the width direction of the vehicle body 2 and that join the midway portions in the longitudinal direction of the tunnel 30 and the side sills 16 are formed so as to extend linearly in the longitudinal direction of the vehicle body 2. Cross members 31, 31 are provided.

  The left and right outer edges of the dash panel 28 are coupled to the front pillars 17, the upper edge is coupled to the front cowl 24, and the lower edge is coupled to the front edge of the floor panel 29. Yes.

  The floor panel 29 is coupled to and supported by the upper surfaces of the side member 12 and the cross member 13, and the left and right outer edges are coupled to the side sills 16. Further, the floor panel 29 constitutes a front end portion thereof and constitutes a rear-falling inclined panel 34 and a front portion of the floor panel 29, and is substantially rearward from a rear end edge portion of the inclined panel 34. A front panel 35 extending horizontally and a rear panel 36 extending rearward after being bent from the rear edge of the front panel 35 and positioned one step higher are provided.

  The tunnel 30 is formed over substantially the entire inclined panel 34 and front panel 35 of the floor panel 29 in the longitudinal direction of the vehicle body 2. The tunnel 30 has an inverted U-shaped cross section in the longitudinal direction, and a pair of left and right side panels 38, 38 and a ceiling panel that integrally couples the upper end edges of the both side panels 38, 38 together. 39.

  In the vehicle compartment 4, a pair of left and right front seats 42, 42 are supported on a midway portion of the front panel 35 of the floor panel 29 in the front-rear direction of the vehicle body 2. In this case, each reinforcing cross member 31 constitutes a support member for firmly supporting each front seat 42. A bench-type rear seat 43 is supported on the rear panel 36 of the floor panel 29.

  One of the front seats 42 is a driver seat, and a steering handle 45 is disposed in front of the driver seat 42. The steering handle 45 is operably supported by a sliding column 47 supported by a bracket 46 on one side of the pillar reinforcing member 25. The steering handle 45 is linked to the front wheel 6 via a steering shaft 48 and a universal joint 49. If the driver seated on the front seat 42 as the driver seat steers the steering handle 45 when the vehicle 1 is traveling, the front wheels 6 linked to the steering handle 45 are steered in a desired direction. It has become.

  In FIG. 1, among the amplitudes A of the vertical vibrations Vp generated in the longitudinal portions of the tunnel 30 when the vehicle 1 is traveling, the amplitude of the midway portion 30 a in the longitudinal direction of the tunnel 30 below the pillar reinforcing member 25. The rigidity of each portion in the longitudinal direction of the tunnel 30 is determined so that A is approximately the maximum amplitude Amax. That is, the rigidity of the rear side 30b of the tunnel 30 behind the pillar reinforcing member 25 is made larger than the rigidity of the front side 30c of the tunnel 30 ahead of the pillar reinforcing member 25.

  Specifically, in FIGS. 1 and 2, in the above-described embodiment, a reinforcing material for reinforcing the dash panel 28 as shown in the prior art, or the front side of the pillar reinforcing member 25 and the tunnel 30 is used. The brace material which mutually connects 30c is not provided. That is, it is avoided that the rigidity of the dash panel 28 or the front side 30c of the tunnel 30 is improved by the reinforcing material or the brace material.

  On the other hand, a midway portion in the longitudinal direction of the rear side 30 b of the tunnel 30 is reinforced by the reinforcing cross members 31. In FIG. 2, the width of each base of the left and right side panels 38, 38 on the rear side 30b of the tunnel 30 is made larger than that on the front side 30c of the tunnel 30, and together with this, the tunnel The cross sectional area of the rear side 30b of the 30 is larger than that of the front side 30c of the tunnel 30. 1 to 3, the rear side 30b of the tunnel 30 is reinforced by a sheet metal reinforcing member 51 attached to the inner surface thereof.

  That is, as described above, the reinforcing material and the brace material referred to in the prior art are not provided, the reinforcing cross member 31 and the reinforcing material 51 for reinforcing the rear side 30b of the tunnel 30 are provided, and the tunnel 30 is provided. As described above, the rigidity of the rear side 30b of the tunnel 30 is made larger than the rigidity of the front side 30c of the tunnel 30 by increasing the shape, for example, by increasing the cross-sectional area of the rear side 30b.

  Note that only one of the reinforcing cross member 31 and the reinforcing member 51 and the enlargement of the shape of the rear side 30b of the tunnel 30 may be applied.

  According to the above configuration, the longitudinal halfway portion 30a of the tunnel 30 below the pillar reinforcing member 25 out of the amplitude A of the vertical vibration Vp generated in each longitudinal portion of the tunnel 30 when the vehicle 1 travels. The rigidity of the rear side 30b of the tunnel 30 behind the pillar reinforcing member 25 is set so that the rigidity of the front side 30c of the tunnel 30 ahead of the pillar reinforcing member 25 is such that the amplitude A of the It is larger than the rigidity.

  Here, as described above, when the vehicle 1 travels, the amplitude A of the midway portion 30a of the tunnel 30 becomes substantially the maximum amplitude Amax, but the midway portion 30a of the tunnel 30 is positioned below the pillar reinforcing member 25. This is a portion located in front of the occupant seated on the front seat 42 in the passenger compartment 4 during normal traveling. For this reason, the vertical vibration Vp having a large amplitude A in the midway portion 30a of the tunnel 30 is prevented from directly affecting each occupant, and the riding comfort of the vehicle 1 is kept good.

  On the other hand, the tunnel 30 is formed in a floor panel 29, and the dash panel 28 is connected to the floor panel 29. For this reason, the dash panel 28 tends to vibrate greatly in conjunction with the vertical vibration Vp having a large amplitude A in the midway portion 30a of the tunnel 30. This vibration is sequentially transmitted from the dash panel 28 to the front cowl 24, There is a risk of transmission to the front pillar 17, the pillar reinforcing member 25, and the steering handle 45.

  However, the dash panel 28 extends in the width direction of the vehicle body 2 as described above, and extends downward from the front cowl 24 to have a flat shape as a whole. Low. For this reason, the dash panel 28 tends to smoothly vibrate in the longitudinal direction Vh in the thickness direction of the vehicle body 2 in conjunction with the vertical vibration Vp of the midway portion 30a of the tunnel 30.

  Therefore, the fact that the vertical vibration Vp having a large amplitude A in the midway portion 30a of the tunnel 30 reaches the front cowl 24 is effectively absorbed by the longitudinal vibration Vh of the dash panel 28. For this reason, it is suppressed that the steering handle 45 vibrates in conjunction with the midway portion 30a of the tunnel 30, and a smooth steering operation for the steering handle 45 is ensured.

  The smooth steering operation of the steering handle 45 described above is ensured by a reinforcing material for reinforcing the dash panel 28 as shown in the prior art, the front side of the pillar reinforcing member 25 and the tunnel 30. This can also be achieved without providing a brace material for bonding 30c to each other. Therefore, the above-described smooth steering operation can be ensured with a simple configuration and without unnecessarily narrowing the passenger compartment 4.

  Moreover, according to the said structure, since the structure is simple and mode control by computer analysis (CAE) is easy, vibration calculation can be woven in at a design stage, without evaluating a real machine (manufacturing vehicle). There is also an effect.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Body frame 4 Car body 5 Car body body 12 Side member 13 Cross member 16 Side sill 17 Front pillar 24 Front cowl 25 Pillar reinforcement member 28 Dash panel 29 Floor panel 30 Tunnel 30a Midway part 30b Rear side 30c Front side 31 Reinforcement cross member 42 Front seat 43 Rear seat 45 Steering handle 51 Reinforcement material A Amplitude Amax Maximum amplitude Vp Vertical vibration Vh Longitudinal vibration

Claims (1)

A front cowl and a pillar reinforcing member that extend in the width direction of the vehicle body and are disposed at the front end portion of the vehicle compartment and are separated from each other in the front-rear direction of the vehicle body. A dash panel that extends in the width direction and extends downward from the front cowl to form the front surface of the vehicle compartment, and a floor panel that extends from the lower end edge of the dash panel to the rear of the vehicle body to form the lower surface of the vehicle compartment, A tunnel formed in the center of the floor panel in the width direction of the vehicle body so as to bulge upward and extend in the front-rear direction, a steering handle supported by the pillar reinforcing member, and more than the pillar reinforcing member In a vehicle having a front seat supported by the floor panel at the rear and seated by an occupant ,
The pillar reinforcement so that the amplitude of the midway portion in the longitudinal direction of the tunnel below the pillar reinforcement member is substantially the maximum amplitude among the amplitudes of the vertical vibrations generated in the longitudinal portions of the tunnel when the vehicle is traveling. A vehicle body structure in a vehicle, wherein the rigidity of the rear side of the tunnel behind the member is larger than the rigidity of the front side of the tunnel ahead of the pillar reinforcing member.

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