Vehicle

Abstract

To provide a technology for improving strength of seat fixing points.SOLUTION: A vehicle comprises: a floor panel; a first cross member that extends in a vehicle cross direction along the floor panel; a second cross member that extends in the vehicle cross direction along the floor panel and is positioned rearward in a vehicle longitudinal direction from the first cross member; a connection member that extends in the vehicle longitudinal direction along the floor panel and connects the first cross member and the second cross member with each other; and seat brackets that are provided on the connection member, and to which a seat that a user sits on is fixed.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a vehicle. [Background technology]

[0002] Patent Document 1 describes a vehicle. In this vehicle, an inner belt anchor to which a tongue plate of a seat belt is engaged is fixed to a floor panel. A cross member and a reinforcement are provided on the floor panel, and a fixing portion of the inner belt anchor is connected to the cross member via the reinforcement. With this configuration, deformation of the floor panel is suppressed even when a large load is applied to the seat belt. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-328569 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent vehicles, one or both ends of a seat belt are often fixed to a seat. In such a configuration, when a large load is applied to the seat belt, the large load acts on the fixing point of the seat to the floor panel (hereinafter referred to as the seat fixing point), which may cause deformation of the floor panel. This specification provides a technology for improving the strength of the seat fixing point. [Means for solving the problem]

[0005] The technology disclosed in this specification is embodied in a vehicle. In a first aspect, the vehicle includes a floor panel, a first cross member extending in the left-right direction of the vehicle along the floor panel, a second cross member extending in the left-right direction of the vehicle along the floor panel and positioned rearward of the first cross member in the front-rear direction of the vehicle, a connecting member extending in the front-rear direction of the vehicle along the floor panel and connecting the first cross member and the second cross member to each other, and a seat bracket provided on the connecting member and to which a seat on which a user sits is fixed. Here, the seat may be directly fixed to the seat bracket, or the seat may be indirectly fixed via a seat rail or the like.

[0006] In the above-mentioned vehicle, the seat bracket to which the seat is fixed is provided on the connecting member that connects the first cross member and the second cross member to each other. With this configuration, the seat fixing point on the floor panel is reinforced by the connecting member and the two cross members, so deformation occurring in the floor panel, etc. can be suppressed. Furthermore, when a side collision occurs on the vehicle and a load is applied to one of the two cross members from the left and right of the vehicle, the load is also transmitted to the other cross member via the connecting member. Therefore, the strength of the vehicle against side collisions can be improved.

[0007] In a second aspect, the vehicle of the first aspect may further include a battery pack located below the floor panel in the vehicle up-down direction. In this case, the first cross member and the second cross member may be located rearward of the battery pack in the vehicle front-rear direction and provided along the lower surface of the floor panel. With this configuration, the space of the vehicle interior provided above the floor panel can be made relatively large.

[0008] In a third aspect, in the first or second aspect, the vehicle may further include a reinforcement plate disposed inside the first cross member along the left-right direction of the vehicle and joined to the first cross member. This configuration can improve the rigidity and strength of the first cross member. As a result, the seat can be supported more stably, and the absorption of collision energy by the first cross member can be improved in the event of a side collision of the vehicle.

[0009] In a fourth aspect, in any one of the first to third aspects, the vehicle may further include a third cross member extending in the left-right direction of the vehicle along an upper surface of the floor panel above the battery pack in the vertical direction of the vehicle, and a second seat bracket provided on the third cross member and to which the seat is fixed. With this configuration, the front end portion of the seat is supported by the third cross member, which is a framework member, so that the seat is more firmly fixed to the floor panel.

[0010] In a fifth aspect, in any one of the first to fourth aspects, the vehicle may include a pair of rockers extending in the vehicle front-rear direction along both side edges of the floor panel in the vehicle left-right direction. In this case, the first cross member may extend between the rear ends of the pair of rockers. With this configuration, the first cross member, together with the pair of rockers, forms the framework of the vehicle, so that the seat can be supported more stably. In addition, when a side collision occurs on the vehicle, the first cross member functions as a transmission path (so-called load path) that transmits the load at the time of the side collision transmitted from one of the rockers in the left-right direction. The load transmitted to the first cross member is also transmitted to the second cross member via the connecting member, so that the strength of the vehicle against side collision can be improved. [Brief description of the drawings]

[0011] [Figure 1] 1 shows a schematic configuration of a vehicle 10 according to an embodiment. [Diagram 2] FIG. 2 is a top view illustrating the structure of the vehicle 10. [Diagram 3] 1 is a diagram showing the configuration of a vehicle body 12. Note that the floor panel 22 is not shown. [Figure 4] 4 is an enlarged view of a portion IV in FIG 3. Note that the floor panel 22 is omitted from the illustration. [Diagram 5] 4 is a cross-sectional view taken along line VV in FIG. 3 . [Figure 6] FIG. 2 is a bottom view illustrating the structure of the vehicle 10. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] A vehicle 10 according to the embodiment will be described with reference to the drawings. The vehicle 10 according to the embodiment belongs to an electric vehicle having a motor 16 that drives wheels 14f, 14r, and is typically an electric vehicle (a so-called automobile) that runs on a road surface. However, some or all of the techniques described in the embodiment can also be adopted in an electric vehicle that runs on a track. Furthermore, the vehicle 10 is not limited to one that is driven and operated by a user, and may be one that is remotely operated by an external device or one that runs autonomously.

[0013] Here, the direction FR in the drawings indicates the front in the fore-aft direction (or length direction) of the vehicle 10, and the direction RR indicates the rear in the fore-aft direction of the vehicle 10. Furthermore, the direction LH indicates the left in the left-right direction (or width direction) of the vehicle 10, and the direction RH indicates the right in the left-right direction of the vehicle 10. Furthermore, the direction UP indicates the upward direction in the up-down direction (or height direction) of the vehicle 10, and the direction DW indicates the downward direction in the up-down direction of the vehicle 10.

[0014] As shown in FIG. 1, the vehicle 10 includes a vehicle body 12 and a plurality of wheels 14f, 14r. The vehicle body 12 has a passenger compartment 12c, which is a space for carrying passengers. The plurality of wheels 14f, 14r are rotatably attached to the vehicle body 12. The plurality of wheels 14f, 14r include a pair of front wheels 14f located at the front of the vehicle body 12 and a pair of rear wheels 14r located at the rear of the vehicle body 12. The pair of front wheels 14f are arranged coaxially with each other, and the pair of rear wheels 14r are also arranged coaxially with each other. The number of wheels 14f, 14r is not limited to four. Although not particularly limited, the vehicle body 12 is made of a metal such as a steel material or an aluminum alloy.

[0015] As shown in FIGS. 1 and 2, the vehicle 10 further includes a motor 16, a power control unit 18, and a battery pack 20. The motor 16 is a driving motor that drives a pair of rear wheels 14r and is connected to the pair of rear wheels 14r. The battery pack 20 is a power supply device that supplies power to the motor 16 and is electrically connected to the motor 16 via the power control unit 18. The battery pack 20 incorporates a plurality of secondary battery cells and is configured to be repeatedly charged by external power or regenerative power of the motor 16. The battery pack 20 is located below the floor panel 22 and is arranged along the floor panel 22. The power control unit 18 incorporates a DC-DC converter and / or an inverter, and controls the driving power supplied from the battery pack 20 to the motor 16 and the regenerative power supplied from the motor 16 to the battery pack 20 in response to, for example, a driving operation by a user.

[0016] The motor 16 is not limited to the pair of rear wheels 14r, but may be configured to drive at least one of the multiple wheels 14f, 14r. The vehicle 10 may further include another prime mover, such as an engine, instead of or in addition to the motor 16. Furthermore, the vehicle 10 may include another power source device, such as a fuel cell unit or a solar panel, in addition to the battery pack 20. The vehicle 10 is not limited to the electric vehicle described here, but may be a hybrid vehicle, a fuel cell vehicle, a solar car, or the like.

[0017] As shown in FIG. 1-6, the vehicle body 12 includes a floor panel 22 and a pair of rockers 24. The floor panel 22 is a plate-like member that constitutes the bottom surface of the vehicle interior 12c. Each of the pair of rockers 24 is a hollow member having a constant cross section along the vehicle length direction, and constitutes part of the framework of the vehicle body 12. The pair of rockers 24 are provided symmetrically with respect to the left-right direction of the vehicle 10. The pair of rockers 24 extend in the front-rear direction along both side edges of the floor panel 22 in the left-right direction. That is, the floor panel 22 is provided between the pair of rockers 24.

[0018] Although not limited thereto, each of the pair of rockers 24 includes a rocker inner panel 24a and a rocker outer panel (not shown). The rocker inner panel 24a is located on the inner side in the width direction, and the rocker outer panel is located on the outer side in the width direction. The rocker inner panel 24a and the rocker outer panel are joined to each other at their respective upper and lower edges, and a closed space extending in the front-rear direction is formed inside the rocker 24. However, in other embodiments, each rocker 24 is not limited to only the rocker inner panel 24a and the rocker outer panel, and may be composed of three or more panels.

[0019] As shown in FIG. 2-6, the vehicle body 12 includes a pair of rear side members 26 and a connecting member 28. Each of the pair of rear side members 26 is a hollow member extending along the vehicle length direction and constitutes a part of the framework of the vehicle body 12. The connecting member 28 is a member for connecting each of the rear side members 26 to the corresponding rocker 24. The pair of rear side members 26 are provided symmetrically with respect to the left-right direction of the vehicle 10. The front end of each of the rear side members 26 is connected to the rear end of the corresponding rocker 24 via the connecting member 28. In addition, the pair of rear side members 26 extend in the front-rear direction along both side edges of the floor panel 22, similar to the pair of rockers 24. Note that the vehicle body 12 does not necessarily need to include the connecting member 28. In other embodiments, each of the rear side members 26 may be directly connected to the corresponding rocker 24.

[0020] As shown in FIG. 2-6, the vehicle body 12 further includes two under-floor cross members 30, 32. Each of the two under-floor cross members 30, 32 generally has a channel member structure and has a substantially U-shaped cross section with an open upper portion. The two under-floor cross members 30, 32 are located behind the battery pack 20 and extend in the left-right direction between the pair of rockers 24 along the lower surface of the floor panel 22. Although not limited thereto, each of the under-floor cross members 30, 32 is joined to the floor panel 22 by welding or the like. As a result, each of the under-floor cross members 30, 32, together with the floor panel 22, forms a closed space extending in the left-right direction of the vehicle 10.

[0021] The two under-floor cross members 30, 32 include a first under-floor cross member 30 and a second under-floor cross member 32. The first under-floor cross member 30 extends between the rear ends of the pair of rockers 24. The second under-floor cross member 32 is located rearward of the first under-floor cross member 30 and extends between the pair of rear side members 26.

[0022] As shown in FIG. 2-6, the vehicle body 12 further includes two connecting members 34, 36. Each of the two connecting members 34, 36 generally has a channel member structure and has a substantially U-shaped cross section with an open upper portion. The two connecting members 34, 36 extend in the front-rear direction along the floor panel 22 and connect the first underfloor cross member 30 and the second underfloor cross member 32 to each other. The two connecting members 34, 36 include a first connecting member 34 and a second connecting member 36. The second connecting member 36 is located to the left of the first connecting member 34. Although not limited thereto, the front end of each connecting member 34, 36 is joined to the first underfloor cross member 30 by welding or the like, and the rear end of each connecting member 34, 36 is joined to the second underfloor cross member 32 by welding or the like.

[0023] As shown in Figs. 2, 3, 5, and 6, the vehicle body 12 further includes an upper floor cross member 38. The upper floor cross member 38 generally has a channel member structure and has a substantially U-shaped cross section with an open lower portion. The upper floor cross member 38 is located above the battery pack 20 and extends in the left-right direction between the pair of rockers 24 along the upper surface of the floor panel 22. Therefore, the upper floor cross member 38, the first lower floor cross member 30, and the second lower floor cross member 32 are located in this order from the front to the rear of the vehicle 10. Although not limited thereto, the upper floor cross member 38 is joined to the floor panel 22 by welding or the like. As a result, the upper floor cross member 38, together with the floor panel 22, forms a closed space extending in the left-right direction of the vehicle 10.

[0024] As shown in FIG. 2, the vehicle 10 further includes a plurality of seat rails 40, 42, 44, 46. Each of the plurality of seat rails 40, 42, 44, 46 is a member for fixing a seat (not shown) on which a user sits so as to be slidable in the front-rear direction. The plurality of seat rails 40, 42, 44, 46 includes a first seat rail 40, a second seat rail 42, a third seat rail 44, and a fourth seat rail 46. The first seat rail 40 is located on the rightmost side of the vehicle 10, the second seat rail 42 is located between the first seat rail 40 and the third seat rail 44, the third seat rail 44 is located between the second seat rail 42 and the fourth seat rail 46, and the fourth seat rail 46 is located on the leftmost side of the vehicle 10. That is, from the right to the left of the vehicle 10, a first seat rail 40, a second seat rail 42, a third seat rail 44, and a fourth seat rail 46 are positioned in this order.

[0025] As one example, a seat (not shown) located on the right side of the vehicle interior 12c is slidably fixed to the first seat rail 40 and the second seat rail 42. Meanwhile, a seat (not shown) located on the left side of the vehicle interior 12c is slidably fixed to the third seat rail 44 and the fourth seat rail 46. Here, the positions of the seat rails 40, 42, 44, 46 in the left-right direction can be changed as appropriate depending on the seat located in the vehicle interior 12c. Also,

[0026] As shown in FIG. 2-5, the vehicle 10 further includes a plurality of front seat brackets 48, 50, 52, 54. The front seat brackets 48, 50 are members for fixing the front ends of the corresponding seat rails 40, 42, 44, 46. The front seat brackets 48, 50, 52, 54 are provided on the floor cross member 38. As a result, the front end portions of the seat rails 40, 42, 44, 46 are supported by the floor cross member 38. The front seat brackets 48, 50, 52, 54 include a first front seat bracket 48, a second front seat bracket 50, a third front seat bracket 52, and a fourth front seat bracket 54. The first front seat bracket 48 is located at the rightmost position in the vehicle 10, the second front seat bracket 50 is located between the first front seat bracket 48 and the third front seat bracket 52, the third front seat bracket 52 is located between the second front seat bracket 50 and the fourth front seat bracket 54, and the fourth front seat bracket 54 is located at the leftmost position in the vehicle 10. That is, from the right to the left of the vehicle 10, the first front seat bracket 48, the second front seat bracket 50, the third front seat bracket 52, and the fourth front seat bracket 54 are located in this order.

[0027] As shown in FIG. 2-5, the vehicle 10 further includes a plurality of rear seat brackets 56, 58, 60, 62. The rear seat brackets 56, 58, 60, 62 are members for fixing the rear ends of the corresponding seat rails 40, 42, 44, 46. The rear seat brackets 56, 58, 60, 62 include a first rear seat bracket 56, a second rear seat bracket 58, a third rear seat bracket 60, and a fourth rear seat bracket 62. The first rear seat bracket 56 is located behind the first front seat bracket 48 and is provided on the right connecting member 28. The second rear seat bracket 58 is located behind the second front seat bracket 50 and is provided on the first connecting member 34. As a result, the rear end portion of the second seat rail 42 is supported by the first connecting member 34, the first floor cross member 30, and the second under-floor cross member 32. The third rear seat bracket 60 is located rear of the third front seat bracket 52, and is provided to the second connecting member 36. As a result, the rear end portion of the third seat rail 44 is supported by the second connecting member 36, the first floor cross member 30, and the second under-floor cross member 32. The fourth rear seat bracket 62 is located rear of the fourth front seat bracket 54, and is provided to the left connecting member 28.

[0028] As described above, the front seat brackets 48, 50, 52, 54 are provided on the floor-mounted cross member 38. That is, the positions of the front seat brackets 48, 50, 52, 54 in the front-rear direction are determined by the position of the floor-mounted cross member 38 in the front-rear direction. On the other hand, the position of the second rear seat bracket 58 in the front-rear direction is determined according to the position of the second front seat bracket 50 in the front-rear direction and the length dimension of the second seat rail 42 in the front-rear direction. In this regard, since the second rear seat bracket 58 is provided in the first connecting member 34, the position of the second rear seat bracket 58 in the front-rear direction can be freely set within the range of the length of the first connecting member 34 extending in the front-rear direction. In this way, the position of the second rear seat bracket 58 in the front-rear direction can be set relatively freely regardless of the positions of the under-floor cross members 30, 32 in the front-rear direction. Similarly, the position of the third rear seat bracket 60 in the fore-aft direction can also be set relatively freely, regardless of the positions of the respective under-floor cross members 30, 32 in the fore-aft direction.

[0029] Although not particularly limited, each of the front seat brackets 48, 50, 52, 54 is joined to the floor cross member 38 by welding or the like. In addition, the first rear seat bracket 56 is joined to the right connecting member 28 by welding or the like, the second rear seat bracket 58 is joined to the first connecting member 34 by welding or the like, the third rear seat bracket 60 is joined to the second connecting member 36 by welding or the like, and the fourth rear seat bracket 62 is joined to the left connecting member 28 by welding or the like.

[0030] In the vehicle 10 described above, the second rear seat bracket 58 to which the right seat (not shown) is fixed is provided on the first connecting member 34 that connects the first underfloor cross member 30 and the second underfloor cross member 32 to each other. Similarly, the third rear seat bracket 60 to which the left seat (not shown) is fixed is provided on the second connecting member 36 that connects the first underfloor cross member 30 and the second underfloor cross member 32 to each other. With this configuration, the seat fixing portion on the floor panel 22 is reinforced by the connecting members 34, 36 and the two underfloor cross members 30, 32, so that deformation occurring in the floor panel 22 and the like can be suppressed. In addition, when a side collision occurs on the vehicle 10 and a load is applied to one of the two underfloor cross members 30, 32 from the left-right direction of the vehicle, the load is also transmitted to the other underfloor cross member 30, 32 via the connecting members 34, 36. Therefore, the strength of the vehicle 10 against a side collision can be improved.

[0031] The first under-floor cross member 30 in this specification is an example of a first cross member in the present technology, the second under-floor cross member 32 in this specification is an example of a second cross member in the present technology, and the above-floor cross member 38 in this specification is an example of a third cross member in the present technology. Also, the second rear seat bracket 58 and the third rear seat bracket 60 in this specification are examples of seat brackets in the present technology, and the second front seat bracket 50 and the third front seat bracket 52 in this specification are examples of second seat brackets in the present technology.

[0032] It should be noted that the vehicle 10 does not necessarily have to include a plurality of seat rails 40, 42, 44, 46. In other embodiments, the seat on which the user sits may be directly fixed to each of the front seat brackets 48, 50, 52, 54 and the rear seat brackets 56, 58, 60, 62. Also, the vehicle 10 does not necessarily have to include a plurality of seat brackets 48, 50, 52, 54, 56, 58, 60, 62. That is, the vehicle 10 only needs to include at least one of the second rear seat bracket 58 or the third rear seat bracket 60 in the above-described embodiment.

[0033] As an example, as shown in FIG. 3-5, the first underfloor cross member 30 further includes a reinforcement plate 64. The reinforcement plate 64 is a reinforcing member that improves the strength of the first underfloor cross member 30. The reinforcement plate 64 is arranged in the left-right direction inside the first underfloor cross member 30. The reinforcement plate 64 is joined to the first underfloor cross member 30 by welding or the like. As a result, the reinforcement plate 64 improves the strength of the first underfloor cross member 30. With this configuration, the rigidity and strength of the first underfloor cross member 30 can be improved. Therefore, the seat can be supported more stably, and the absorption of collision energy by the first underfloor cross member 30 can be improved when a side collision occurs to the vehicle 10.

[0034] In addition to or instead of the above, as shown in FIG. 3-5, the first underfloor cross member 30 further includes a bulk 66. The bulk 66 is a reinforcing member that improves the strength of the first underfloor cross member 30. The bulk 66 is a plate-shaped member and is arranged in a direction that crosses the left-right direction inside the first underfloor cross member 30. The bulk 66 is joined to the first underfloor cross member 30 and / or the reinforcement plate 64 by welding or the like. As a result, the bulk 66 improves the strength of the first underfloor cross member 30. This configuration can also improve the rigidity and strength of the first underfloor cross member 30. Therefore, the seat can be supported more stably, and the absorption of collision energy by the first underfloor cross member 30 can be improved when a side collision occurs to the vehicle 10.

[0035] Although several specific examples have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples exemplified above. The technical elements described in this specification or drawings exhibit technical usefulness alone or in combination. [Explanation of symbols]

[0036] 10: Vehicle 12: Body 12c: Cabin 14f: Front wheel 14r: Rear wheel 16: Motor 18: Power control unit 20: Battery pack 22: Floor panel 24: Rocca 24a: Rocker inner panel 26: Rear side member 28: Connection parts 30: First floor under cross member 32: Second floor under cross member 34: First connecting member 36: Second connecting member 38: Cross member above floor 40: First seat rail 42: Second seat rail 44: 3rd seat rail 46: 4th seat rail 48: First front seat bracket 50: Second front seat bracket 52: Third front seat bracket 54: 4th front seat bracket 56: First rear seat bracket 58: Second rear seat bracket 60: 3rd rear seat bracket 62: 4th rear seat bracket 64: Reinforcement plate 66: Bulk

Claims

1. Floor panels and a first cross member extending in a left-right direction of the vehicle along the floor panel; a second cross member extending in the vehicle left-right direction along the floor panel and positioned rearward of the first cross member in the vehicle front-rear direction; a connecting member extending in the vehicle front-rear direction along the floor panel and connecting the first cross member and the second cross member to each other; a seat bracket provided on the connecting member and to which a seat on which a user sits is fixed; A vehicle equipped with:

2. The vehicle further includes a battery pack located below the floor panel in the vertical direction of the vehicle. The vehicle according to claim 1 , wherein the first cross member and the second cross member are located rearward of the battery pack in the vehicle front-rear direction and are provided along a lower surface of the floor panel.

3. The vehicle according to claim 2 , further comprising a reinforcement plate disposed inside the first cross member along the left-right direction of the vehicle and joined to the first cross member.

4. a third cross member extending in the left-right direction of the vehicle along an upper surface of the floor panel above the battery pack in the vehicle up-down direction; a second seat bracket provided on the third cross member and to which the seat is fixed; The vehicle of claim 2 or 3, further comprising:

5. a pair of rockers extending in the vehicle front-rear direction along both side edges of the floor panel in the vehicle left-right direction, 4. The vehicle according to claim 1, wherein the first cross member extends between rear ends of the pair of rockers.

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