JP4299098B2 - Spare tire storage part structure of the car body - Google Patents

Description

  The present invention relates to a spare tire storage portion structure for a vehicle body.

  An automobile is generally equipped with a spare tire, and the spare tire is installed in a trunk room behind the passenger compartment. The trunk room has a spare tire storage section for storing a spare tire below the bottom of the trunk room.

As a conventional spare tire storage unit structure, a vehicle body structure in which a spare tire storage unit structure is formed on a rear floor is known (see, for example, Patent Document 1).
JP-A-9-52581 (page 4, FIG. 1)

Patent document 1 is demonstrated based on the following figure.
FIG. 5 is a diagram for explaining the basic configuration of the prior art. The rear floor pan 102 of the vehicle 101 includes a spare tire well 103 and a bottom 105 of the trunk room 104, and is formed in a concave shape on the bottom 105 of the trunk room 104. The spare tire 106 can be accommodated in the spare tire well 103 as shown by a two-dot chain line.
In general, the vehicle 101 employs a configuration in which an exhaust device 107 (exit 108) is disposed below the rear floor pan 102 so that exhaust gas can be guided to the rear end 109 of the spare tire well 103.

  However, in the vehicle body structure of Patent Document 1, it is necessary to dispose an exhaust device 107 that guides exhaust gas to the rear end 109 of the spare tire well 103 in the vicinity of the spare tire well 103, and the heat of the exhaust device 107 is heated by the spare tire well 103. It becomes easy to be transmitted to. Recently, the structure that improves the problems such as wind lift by eliminating the unevenness under the floor as much as possible, and the structure that the exhaust device outlet 108 is divided into two on the left and right for the purpose of improving the design of the rear part of the automobile. Therefore, the exhaust device 107 tends to be close to the spare tire well (spare tire storage portion) 103, and a heat countermeasure for the spare tire storage portion has been desired.

  An object of the present invention is to suppress the temperature of the spare tire in the spare tire storage portion to a predetermined temperature or less even if the exhaust device is disposed in the vicinity of the spare tire storage portion.

According to a first aspect of the present invention, there is provided a tire storage recess connected to the rear floor of the rear part of the vehicle body, a plate-like member attached to the tire storage recess with a gap for circulating air and supporting the spare tire on the upper surface thereof. The plate-like member is connected to one end fixed to the bottom of the tire storage recess, the other end fixed to the side surface of the tire storage recess, and one end and the other end. Air flows in the direction away from the tire storage recess, flows from one end to the other end of the tire storage recess, and crosses the air flow from one end to the other end (front and back direction in FIG. 4). And a receiving portion for flowing the water.

In the invention according to claim 1, the spare tire storage structure is attached to the tire storage recess connected to the rear floor of the rear part of the vehicle body and a clearance for allowing air to flow on the tire storage recess, and the upper surface supports the spare tire. A plate-like member, and one end fixed to the bottom of the tire storage recess, the other end fixed to the side surface of the tire storage recess, one end, and the other end to the tire storage recess. A receiving portion for flowing air in a direction (front and back direction in FIG. 4) that is separated from the tire storage recess and flows from one end to the other end and intersects the air flow from one end to the other end. Therefore, the plate-like member reduces the transfer of heat transmitted from the nearby exhaust device to the spare tire storage portion, and does not reach a desired temperature or higher. Since the spare tire is supported on the upper surface of such a plate-like member, there is an advantage that the temperature of the spare tire in the spare tire storage portion can be suppressed to a predetermined temperature or lower.
In addition, since the receiving portion other than the one end and the other end of the plate-like member is separated from the tire storage recess, heat conduction is performed only at one end and the other end, and the heat of the tire storage recess passes through the gap (from one end). It is escaped by air flowing upward (the other end) (in the direction of arrow a in FIG. 4) and in the left-right direction of the vehicle body (in the front and back direction in FIG. 4). As a result, it becomes difficult for heat to be conducted to the plate-like member, and the temperature of the spare tire can be suppressed to a predetermined temperature or lower.

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.
FIG. 1 is a perspective view of a vehicle that employs a spare tire storage structure for a vehicle body according to the present invention.
The vehicle 11 is an automobile and includes a vehicle body 12. The vehicle body 12 includes an underbody 14 that forms the floor of the passenger compartment 13, and a front body 15 that is provided in front of the passenger compartment 13 and continues in front of the underbody 14. 16 is an engine room of the front body 15, 17 is a hood structure, 18 is a trunk room, and 19 is a rear part of the vehicle body.

  The hood structure 17 includes a hood (hood panel) 21 that covers the engine room 16 of the vehicle 11, hood hinges 22 and 22 that can be opened and closed (in the direction of arrow a) on the vehicle body 12 side, and a hood panel 21. Hood cushions 25 (... indicate a plurality, the same applies hereinafter) provided on the upper frame 24 of the bulkhead 23, which is a part far from the hood hinges 22 and 22, in order to reduce the impact when closing the hood.

The underbody 14 includes a front floor 27 and a rear floor 31 connected to the rear portion of the front floor 27, and the rear floor 31 has a spare tire storage portion 32. Reference numeral 33 denotes an exhaust device disposed below the rear floor 31, 34 denotes the bottom of the trunk room 18, and 35 denotes a spare tire stored in the spare tire storage portion 32.
A bottom cover (not shown) is placed on the bottom 34 of the trunk room 18 to seal the spare tire storage portion 32.

  The spare tire storage portion 32 is formed in a concave shape with a tire storage recess 41 connected to the bottom 34 of the trunk room 18 set on the rear floor 31. In this structure, a plate-like member 46 is attached to the bottom portion 42 of the recess 41 and to the front portion 45.

FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1 and shows a state in which the spare tire storage portion 32 is looked up from below.
The plate-like member 46 is formed by forming the receiving portion 47 into a substantially U-shaped cross section so that the tire is separated from the bottom portion 42 of the tire storage recess 41 by a predetermined distance H (see FIG. 3). The other end 52 was fixed to the side surface 53 of the tire storage recess 41 by welding. In addition, it is desirable to make it remove | separate from the tire storage recessed part 41 except both ends 51 and 52. FIG.
The material of the plate member 46 is a steel plate.

3 is a cross-sectional view taken along line 3-3 of FIG.
As described above, the plate-like member 46 is formed with the receiving portion 47 having a substantially U-shaped cross section so that the spare tire 35 is separated from the bottom portion 42 of the tire storage recess 41 by a predetermined distance H. 42, one end 51 is fixed by spot welding, the spare tire 35 is supported by the upper surface 54 of the receiving portion 47, and a gap 55 through which air flows is formed on the back side of the upper surface 54.

4 is a cross-sectional view taken along line 4-4 of FIG. 1 and also serves as an operational diagram of the spare tire storage portion structure of the present invention.
The spare tire storage portion 32 circulates air on the rear floor 31 (see FIG. 1) of the vehicle body rear portion 19 (see FIG. 1), here, the bottom portion 42 of the concave tire storage recess 41 connected to the rear floor 31 as indicated by an arrow a. A plate-like member 46 is attached with a gap 55 to be supported, and the upper surface 54 of the plate-like member 46 supports the spare tire 35.
Note that the gap 55 through which air is circulated not only circulates air as indicated by an arrow a, but also circulates air in the left-right direction of the vehicle body (front and back in the figure).

Next, the operation of the present invention will be schematically described.
When the engine of the vehicle 11 is started, the temperature of the exhaust device 33 rises, and the exhaust device 33 that has reached a high temperature heats the tire housing recess 41 as shown by arrow b, so the temperature of the tire housing recess 41 also starts to rise. However, since conduction of heat from the tire storage recess 41 to the plate member 46 is performed only at the one end 51 and the other end 52, the temperature increase rate of the plate member 46 becomes extremely slow. Furthermore, since the part of the plate-like member 46 excluding the one end 51 and the other end 52 is away from the tire storage recess 41, the heat of the tire storage recess 41 is transmitted via air as indicated by an arrow c. Since air flows in from the bottom of the gap 55 as shown by the arrow a, the upward air flow due to the temperature difference is promoted, and the heat from the tire storage recess 41 escapes as shown by the arrow d. The temperature of the member 46 is difficult to increase. These act in combination, and when the temperature of the plate-like member 46 reaches a certain temperature, for example, a temperature of 40 ° C., it does not increase any more. Since the spare tire 35 is supported by the upper surface 54 of such a plate-like member 46, even if the exhaust device 33 is arranged in the vicinity of the spare tire storage portion 32, the spare tire storage portion 32 is not used as a spare in the spare tire storage portion 32. The temperature of the tire 35 can be suppressed to a predetermined temperature or lower.

  In addition, the spare tire storage portion 32 has a plate-like member 46 attached on the rear floor 31 (tire storage recess 41) of the rear portion 19 of the vehicle body with a gap 55 for circulating air. Since it is configured to support the tire 35, the processing of the parts is simple and the number of parts is one, so that it does not take time to manufacture.

  In addition, although the spare tire storage part structure of the vehicle body of the present invention is applied to a four-wheeled vehicle in the embodiment, it can also be applied to a three-wheeled vehicle and can be applied to a general vehicle.

  The spare tire storage part structure of the vehicle body of the present invention is suitable for a four-wheeled vehicle.

The perspective view of the vehicle which employ | adopted the spare-tire storage part structure of the vehicle body of this invention 2 arrow view of FIG. 3-3 sectional view of FIG. Sectional view taken along line 4-4 in FIG. The figure explaining the basic composition of conventional technology

Explanation of symbols

  DESCRIPTION OF SYMBOLS 19 ... Vehicle body rear part, 31 ... Rear floor, 32 ... Spare tire storage part, 35 ... Spare tire, 41 ... Tire storage recessed part, 46 ... Plate-shaped member, 54 ... Upper surface, 55 ... Gap.

Claims (1)

A tire storage recess connected to the rear floor at the rear of the vehicle body, a plate-like member attached on the tire storage recess with a gap for air circulation, and supporting the spare tire on its upper surface;
A spare tire storage structure for a vehicle body equipped with
The plate-like member has one end fixed to the bottom of the tire storage recess, the other end fixed to the side surface of the tire storage recess, the one end connected to the other end, and separated along the tire storage recess to store the tire A vehicle body comprising a receiving portion for flowing air between the one end and the other end and for flowing air in a direction intersecting with the air flow from the one end to the other end Spare tire storage part structure.

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