JP2010013058A - Vehicle body floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently drain water, to sufficiently ensure the sealing performance of a vehicle body floor, and to improve working efficiency for maintenance. <P>SOLUTION: A flat floor panel 13 of a vehicle body is provided with a recessed portion 14 for storing articles 15, 17; the recessed portion 14 is provided with a through-hole 31 for passing between the inside and outside of a vehicle interior; the through-hole 31 is provided with a seal nut 32 fixed on the inside of the vehicle interior; the seal nut 32 is tightened with a bolt (a drain bolt) 33 applied from the outside of the vehicle body; and the seal nut 32 having an annular protrusion 74 is fixed to the floor panel 13 by projection welding, thereby enabling fastening of a vehicle body fitting component 64. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle body floor structure at the rear of a vehicle body.

As a vehicle body floor structure, there is known a vehicle body floor structure in which a recess is formed in a floor panel of a vehicle body and an article such as a spare tire is stored in the recess.
This type of vehicle body floor structure is designed to store articles by forming recesses in the floor panel of the vehicle body in order to improve the storage performance of the vehicle body floor.

As such a vehicle body floor structure, there is known a structure in which a recess for storing a spare tire is provided in a floor panel and a drain hole is formed in the recess (for example, see Patent Document 1).
JP-A-8-80877

  The vehicle body floor structure of Patent Document 1 is provided with a recess for storing a spare tire in a floor panel, a fixing portion for fixing the spare tire is provided at the center of the recess, and when the spare tire is stored in the recess, The water drain hole which drains a recessed part is provided in the position and the floor panel.

  In such a vehicle body floor structure, a lid is usually fitted from the indoor side in order to prevent rainwater or the like from entering the drain hole. In this case, since there is a spare tire above the drain hole, the drain cannot be drained unless the spare tire is removed from the recess.

  In recent years, hybrid vehicles combining a gasoline engine and an electric motor have attracted attention. In such a hybrid vehicle, a battery, an inverter, a DC-DC converter, a cooling fan, and the like are housed in one housing, and a hybrid vehicle power supply device having a self-diagnosis function and the like is mounted. Further, the hybrid vehicle power supply device is often disposed on the backrest portion of the rear seat or on the vehicle body floor.

  It is difficult to remove the hybrid vehicle power supply device, and when the hybrid vehicle power supply device is arranged on the vehicle body floor, the vehicle body floor structure cannot drain water unless the hybrid vehicle power supply device is removed. Therefore, the maintainability of the vehicle is reduced.

  It is an object of the present invention to provide a vehicle body floor structure capable of sufficiently draining water, ensuring sufficient sealing performance of a vehicle body floor, and improving workability of maintenance work. And

  According to the first aspect of the present invention, a recess for storing articles is provided in a floor panel of a flat vehicle body, and a through hole is provided in the recess so as to penetrate the vehicle interior and the exterior of the vehicle interior. And a bolt is fastened to the seal nut from the outside of the passenger compartment.

  The invention according to claim 2 is characterized in that the seal nut has an annular protrusion, is fixed to the floor panel by projection welding, and can be fastened to a vehicle body assembly component.

  According to a third aspect of the present invention, the concave portion accommodates the hybrid vehicle power supply device in which the power supply components are integrally housed in one housing, and a seal nut is provided at a lower position of the hybrid vehicle power supply device. It is arranged.

  The invention according to claim 4 is characterized in that a stepped portion corresponding to the height of the seal nut is provided in the recess from the vehicle interior to the exterior of the vehicle interior.

In the invention according to claim 1, the vehicle body floor structure is fixed from the vehicle interior side to the through hole through which the recessed portion for storing the article in the floor panel, the through hole through which the vehicle interior and the outside of the vehicle interior are penetrated. A seal nut and a bolt fastened to the seal nut from the outside of the passenger compartment are configured.
A seal nut is fixed to the through hole and from the vehicle interior side, and a bolt is fastened to the seal nut from the outside of the vehicle interior. Therefore, when storing a spare tire, a power supply device for a hybrid vehicle, etc. Even if the article is not removed, it is possible to drain the recessed portion of the floor panel by removing the bolt from the outside of the passenger compartment. As a result, the sealing performance of the floor panel (vehicle body floor) can be sufficiently secured, and the maintenance performance around the floor panel can be improved.

  In the invention which concerns on Claim 2, since the seal nut was fixed to the floor panel by projection welding, the sealing performance of a floor panel and a seal nut can fully be ensured. Further, since the floor panel and the seal nut are sandwiched at the same time and only an electric current is passed, the workability of the fastening operation can be improved. Furthermore, since the annular protrusion of the seal nut is integrally joined to the floor panel, it has sufficient mounting strength and can be used to fasten vehicle assembly parts (other parts) such as baffles simultaneously, reducing the number of parts. Can be planned.

  In the invention according to claim 3, the power supply device for the hybrid vehicle is such that a battery, an inverter, a DC-DC converter, etc. are housed in one housing, and it is difficult to remove the power supply device for the hybrid vehicle. This is particularly effective when the article to be operated is a hybrid vehicle power supply device. That is, since the seal nut is arranged at the lower position of the power supply device for a hybrid vehicle, the workability of maintenance work can be improved.

  In the invention which concerns on Claim 4, since the level | step-difference part for the height of a seal nut was provided in the recessed part toward the vehicle interior outside from the vehicle interior, the water drainage of a recessed part can fully be performed.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals. In the figure, Fr is the front of the vehicle body, Rr is the rear of the vehicle body, L is the left side of the vehicle body, and R is the right side of the vehicle body.
FIG. 1 is a perspective view of a vehicle body floor structure according to the present invention, FIG. 2 is a perspective view of a power supply device for a hybrid vehicle having a vehicle body floor structure according to the present invention, and FIG. 3 is a hybrid of the vehicle body floor structure according to the present invention. FIG. 4 is a rear sectional view of the vehicle power supply device, FIG. 4 is a perspective view from the bottom surface of the recess of the vehicle body floor structure according to the present invention, and FIG. 5 is a sectional view taken along line 5-5 in FIG.

As shown in FIGS. 1, 4, and 5, the vehicle body floor structure is provided between the left and right rear frames 12, 12 extending in the longitudinal direction of the vehicle body and the rear frames 12, 12. A floor panel (vehicle body floor) 13, a recess (storage recess) 14 provided in the floor panel 13, a hybrid vehicle power supply 15 stored in the recess 14, and an upper portion of the hybrid vehicle power supply 15 The holding arm 16 provided, the spare tire 17 supported by the holding arm 16, the through hole 31 opened in the recess 14, the seal nut 32 that is projection welded to the through hole 31, and the seal nut 32 are screwed It comprises a bolt (drainage bolt) 33.
The hybrid vehicle power supply 15 and the spare tire 17 are examples of articles stored in the recess 14.

  As shown in FIG. 2 and FIG. 3, the hybrid vehicle power supply device 15 includes a battery 35 that stores power, an inverter 36 that controls output from a high output to a low output by changing the power to a high frequency, and a DC voltage to a DC This unit is mainly composed of a DC-DC converter 37 that converts voltage, and a housing 38 that houses power supply components such as the battery 35, the inverter 36, and the DC-DC converter 37.

  The casing 38 is attached to the left and right rear frames 12, 12, and includes a front frame 41 and a rear frame 42 that form a framework of the casing 38, a main body 43 having a bottom surface and both side surfaces, and a front of the main body 43. A front wall (not shown) provided on the rear side, a rear wall 45 provided behind the main body 43, and an upper surface member 46 that covers the front wall, the rear wall 45, and the upper surface of the main body 43.

The front frame 41 is a member formed of a square pipe, and mounting portions 49 and 49 that are attached to the left and right rear frames 12 and 12 with bolts 48 and 48 are formed. It is also a member that supports the holding arm 16.
The rear frame 42 is a member formed of a square pipe, and mounting portions 52 and 52 that are attached to the left and right rear frames 12 and 12 with bolts 51 and 51 are formed.

  As shown in FIG. 1, the holding arm 16 is a substantially T-shaped member in plan view. The holding member 16 has a horizontal member 55 that is passed over the left and right rear frames 12 and 12 above the storage recess 14, and the horizontal member. The rear end is attached to the center of 55, and the front end is extended to the front of the vehicle body and includes a vertical member 56 supported by the front frame 41 on the floor panel 13 side.

  The horizontal member 55 is a member formed by a square pipe, and mounting portions 58 and 58 are formed on the left and right rear frames 12 and 12 by bolts 57 and 57, and left and right tire contact surfaces 59 for receiving the spare tire 17. 59 is a member formed.

  The vertical member 56 is a member formed of a press plate material, the rear end is welded to the approximate center of the horizontal member 55, and the front end is attached to the front frame 41 with an attachment screw. Further, a tire contact surface 61 of the spare tire 17 is integrally formed at the front portion, and a fixing screw portion 62 for fixing the spare tire 17 with a mounting bolt (not shown) is formed at the intermediate portion.

  As shown in FIG. 1, in the vehicle body floor structure, the hybrid vehicle power supply device 15 is stored in the bottom 14 a of the recess (storage recess) 14, and the spare tire 17 is stored on the hybrid vehicle power supply device 15. The

  As shown in FIGS. 4 and 5, the recess (storage recess) 14 includes a baffle (heat insulating material) 64 that insulates heat from the exhaust pipe (not shown) into the recess 14 below the floor panel 13. A bracket 65 that is attached by a bolt (extraction bolt) 33 and supports the baffle 64 is extended. That is, the bolt 33 is a bolt for draining the recess 14 and also serves as a bolt for mounting the baffle 64.

  Specifically, the baffle 64 is a vehicle body assembly part, and is fixed to the recess 14 with bolts 33, fixed to the floor panel 13 with bolts 66, and fixed to the bracket 65 with bolts 67. The baffle 64 is provided with a hole 69 that penetrates the mounting bolt.

  FIG. 5 shows a state in which the bolt (drainage bolt) 33 is removed, and the recess (storage recess) 14 is provided with a through hole 31 that penetrates the bolt 33, and the through hole 31 is provided from the inside of the recess 14. The seal nut 32 is projection welded.

  In general, projection welding is a type of resistance welding in which a large current is passed through a welded joint, heated by the resistance heat generated here, and pressure is applied. This is resistance welding in which a current is concentrated to flow through the projecting portion and pressure-bonded at the same time.

FIG. 6 is a perspective view of a seal nut welded to the recess of the vehicle body floor structure according to the present invention.
The seal nut 32 is formed with three protrusions 72 formed on one flat surface 71 and three protrusions 73 on an arc connecting these protrusions 72. The projection 72 and the projection 73 constitute an annular projection 74, and this annular projection 74 is heated by projection welding and joined to the inner surface of the recess 14.

  That is, in the vehicle body floor structure, the recessed portion 14 for storing the articles 15 and 17 in the floor panel 13, the through hole 31 through which the recessed portion 14 penetrates the vehicle interior and the exterior of the vehicle interior, and the through hole 31 are fixed from the vehicle interior side. And a bolt (drainage bolt) 33 fastened to the seal nut 32 from the outside of the passenger compartment.

  A seal nut 32 is fixed to the through hole 31 from the vehicle interior side, and a bolt (drainage bolt) 33 is fastened to the seal nut 32 from outside the vehicle interior. When housing the vehicle power supply device 15 and the like, the bolts (drainage bolts) 33 can be removed from the outside of the passenger compartment without removing the articles 15 and 17, thereby draining the recess 14 of the floor panel 13. can do. As a result, it is possible to improve maintainability around the floor panel (body floor) 13.

  In the vehicle body floor structure, since the seal nut 32 is fixed to the floor panel 13 by projection welding, the sealing performance between the floor panel 13 and the seal nut 32 can be sufficiently ensured. Further, since the floor panel 13 and the seal nut 32 are sandwiched at the same time and only an electric current flows, the workability of the fastening operation can be improved. Further, since the annular protrusion 74 of the seal nut 32 is integrally joined to the floor panel 13, it has sufficient mounting strength and can fasten vehicle body assembly parts (other parts) such as the baffle 64 at the same time. The number of points can be reduced.

  The hybrid vehicle power supply device 15 includes a battery 35, an inverter 36, a DC-DC converter 37, and the like housed in a single housing 38. The hybrid vehicle power supply device 15 is difficult to remove, and is housed in the recess 14. This is particularly effective when the article is a hybrid vehicle power supply device 15. That is, in the vehicle body floor structure, since the seal nut 32 is disposed at a lower position of the hybrid vehicle power supply device 15, the workability of maintenance work can be improved.

FIG. 7 is a sectional view of the vehicle body floor structure of the second embodiment according to the present invention.
The vehicle body floor structure of the second embodiment is provided with a recess 84 for storing articles in a floor panel 83 of a flat vehicle body, and a through hole 81 through which the vehicle interior and the exterior of the vehicle cabin pass is provided in the recess 84. A seal nut 32 is fixed to the seal nut 32 from the vehicle interior side, and a bolt (drainage bolt) 33 is fastened to the seal nut 32 from outside the vehicle compartment. It is provided in the concave portion 84 from the inside of the room toward the outside of the vehicle compartment.

  In the vehicle body floor structure, the stepped portion 85 corresponding to the height of the seal nut 32 is provided in the recessed portion 84 from the vehicle interior to the exterior of the vehicle interior, so that the recessed portion 84 can be sufficiently drained.

  In the vehicle body floor structure according to the present invention, as shown in FIG. 5, in the vehicle body floor structure, the seal nut 32 is fixed to the through hole 31 from the vehicle interior side. However, the present invention is not limited to this. The seal nut 32 may be fixed.

  The vehicle body floor structure according to the present invention is suitable for use in passenger cars such as sedans and wagons.

1 is a perspective view of a vehicle body floor structure according to the present invention. 1 is a perspective view of a power supply device for a hybrid vehicle having a vehicle body floor structure according to the present invention. 1 is a rear sectional view of a power supply device for a hybrid vehicle having a vehicle body floor structure according to the present invention. It is a perspective view from the bottom of a crevice of a body floor structure concerning the present invention. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a perspective view of the seal nut welded to the recessed part of the vehicle body floor structure which concerns on this invention. It is sectional drawing of the vehicle body floor structure of 2nd Example which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 13 ... Floor panel, 14, 84 ... Recessed part, 15 ... Power supply device for hybrid vehicles, 31 ... Through-hole, 32 ... Seal nut, 33 ... Bolt (drain bolt), 35 ... Power supply component (battery), 36 ... Power supply component (inverter), 37 ... Power supply component (DC-DC converter), 38 ... Case, 64 ... Car body assembly component (baffle), 74 ... Ring projection, 85 ... Step part.

Claims (4)

  The flat floor panel of the vehicle body is provided with a recess for storing articles, and a through hole is provided in the recess to allow the vehicle interior and the exterior of the vehicle to pass through. A seal nut is fixed to the through hole from the vehicle interior side, and the seal nut A vehicle body floor structure characterized in that a bolt is fastened to the outside from the passenger compartment.   The vehicle body floor structure according to claim 1, wherein the seal nut has an annular protrusion and is fixed to the floor panel by projection welding so that a vehicle assembly part can be fastened.   The concave portion houses a hybrid vehicle power supply device in which a power supply component is integrally housed in a single housing, and the seal nut is disposed at a lower position of the hybrid vehicle power supply device. The vehicle body floor structure according to claim 1 or 2.   4. The vehicle body floor structure according to claim 1, wherein a stepped portion corresponding to a height of the seal nut is provided in the recess from the vehicle interior to the vehicle exterior.

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