JP2017144967A - Cab structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure strength of a rear face part of a cab against a load to be inputted from above (or below) the cab.SOLUTION: A cab main body 11 has left and right cab main body side surface parts 11c. A high roof part 12 integrally has a roof front surface part 28, a roof upper surface part 29 and left and right roof side surface parts 30 and 31, and is arranged above the cab main body 11 so as to cover the cab main body 11 fromm above. A back panel 13 has an upper area 38 which blocks a rear side of the high roof part 12 and a lower area 39 which continuously extends downward from the upper area 38 to block a rear side of the cab main body 11, and partitions a rear side of a cab 10. The upper area 38 and the lower area 39 of the back panel 13 are formed integrally. The back panel 3 is fixed to a panel upper surface part 41b and left and right panel side surface parts 41c and 41d of the roof panel 41, the left and right cab main body side surface parts 11c of the cab main body 11 and a rear cab mount rail 18.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cab structure for a high roof type vehicle.

  Patent Document 1 describes a passenger room (cab) of a high roof type fire engine. The ceiling part of the passenger compartment is composed of a high roof part. Front pillars, center pillars, and rear pillars are provided on both sides of the passenger compartment. The upper portions of the front pillar, the center pillar, and the rear pillar are connected by side frames on both sides of the passenger compartment, and are connected by a front frame and a rear frame on the front and rear sides of the passenger compartment, respectively. The high roof portion is attached to a frame-like frame constituted by both side frames, a front frame, and a rear frame. 4 and 6 of the publication show a state in which the rear surface portion extends downward from the rear end of the work bench portion of the high roof portion.

Japanese Patent Laying-Open No. 2015-74275

  In the passenger compartment (cab) of the high roof type fire engine (vehicle) described in Patent Document 1, the high roof part is attached to a frame-like frame constituted by both side frames, a front frame, and a rear frame. The rear panel below the rear frame behind the cab and the rear surface of the high roof portion are connected at the position of the rear frame. Therefore, when a load is input from above (or below) the cab, stress tends to concentrate on the connection between the rear surface of the high roof portion and the rear panel below the rear frame. May be destroyed.

  Therefore, an object of the present invention is to provide a vehicle cab structure that can ensure the strength of the rear surface portion of the cab against a load input from above (or below) the cab.

  In order to solve the above problems, the present invention is a cab structure for a high roof type vehicle, and includes a cab body, a high roof portion, and a back panel. The cab body has left and right cab body side portions formed with door openings. The high roof part extends upward from the top edge of the left and right cab body side parts and connects the left and right roof side parts that define the side of the cab together with the left and right cab body side parts, and the top edge of the left and right roof side parts. And an upper surface portion of the roof that defines the upper portion of the cab. The back panel is connected to the rear edge of the roof upper surface part and the rear edge of the left and right roof side parts and closes the rear of the high roof part, and is integrally formed with the upper area and continuously from the upper area. It has a lower region that extends downward and is connected to the rear end edges of the side portions of the left and right cab main bodies to block the rear of the cab main body, and defines the rear of the cab.

  In the above configuration, the back panel has an upper region that covers the rear of the high roof portion, and a lower region that is integrally formed with the upper region and blocks the rear of the cab body. For this reason, unlike the case where the upper region and the lower region are formed separately, stress concentration can be prevented when a load is input from above (or below) the cab back panel. The strength of the back panel of the cab with respect to a load input from above (or below) can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, the intensity | strength of the rear surface part of the cab with respect to the load input from the upper direction (or downward direction) of a cab is securable.

1 is a perspective view of a vehicle to which a cab structure according to the present invention is applied. It is the schematic perspective view which looked at the cab from diagonally backward. It is a schematic perspective view which shows the state which looked at the back panel of the cab from the compartment side.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Moreover, in the following description, the left-right direction means the left-right direction with the vehicle facing forward.

  As shown in FIG. 1, the cab structure according to this embodiment is applied to a cab 10 of a high roof type truck (vehicle) 1 in which an internal space (vehicle compartment 2) of the cab 10 is expanded upward by a high roof portion 12. .

  As shown in FIGS. 1 to 3, the cab 10 includes a cab body 11, a high roof portion 12 that is disposed above the cab body 11 and expands the internal space of the cab 10, and a back that covers the rear of the cab 10. And a panel 13 disposed at the front end of the track 1. A seat seat (not shown) is provided in the cabin 2 of the cab 10, and a rear space 3 in which a bed or the like (not shown) on which an occupant can rest is provided behind the seat seat.

  The cab main body 11 is obtained by removing the high roof portion 12 and the back panel 13 from the cab 10 of the high roof type vehicle 1, and includes a cab main body bottom surface portion 11a, a cab main body front surface portion 11b, and a pair of left and right cab main body side surfaces. Part 11c (in FIGS. 1 and 3 only the left side cab body side part 11c is shown).

  The cab main body bottom surface portion 11a includes a floor panel 14 that crosses the vertical direction below the passenger compartment 2, a rear cab mount rail 18 that extends in the vehicle width direction at the rear edge of the floor panel 14, and a lower portion of the floor panel 14. It has a pair of left and right cab under frames 4 (only the left side cab under frame 4 is shown in FIG. 3) extending in the front-rear direction, and divides the lower part of the cab 10. The floor panel 14 is fixed to the left and right cab under frames 4 and supported by the left and right cab under frames 4 from below. A pair of left and right cab block brackets 19 are fixed to the rear cab mount rail 18. The rear cab mount rail 18 is supported from the body frame (not shown) side of the truck 1 via the left and right cab block brackets 19.

  The front surface portion 11b of the cab body has a front window 20 and a pair of left and right pillars 22 standing on the left and right sides of the front window 20 (only the left pillar 22 is shown in FIGS. 2 and 3). , Standing along the front edge of the cab main body bottom surface portion 11 a and defining the front of the cab 10. A roof front rail 23 is fixed and extends in the vehicle width direction on the rear surface side of the upper end edge of the cab main body front surface portion 11b extending in the vehicle width direction above the front window 20. The roof front rail 23 connects the upper end portions of the left and right pillars 22 and reinforces the upper end edge portion of the cab body front surface portion 11b. In FIG. 3, the front grille and the like of the cab body front surface portion 11 b are omitted.

  The left and right cab main body side portions 11c include a door opening 24 that opens the vehicle compartment 2 to the side, and a left and right door 25 that opens and closes the door opening 24 (only the left door 25 is shown in FIGS. 1 and 2). And erected along both end edges in the vehicle width direction of the cab main body bottom surface portion 11a to partition the sides of the cab 10 (both sides in the vehicle width direction). Roof side rails 32 are fixed to the inner side surfaces in the vehicle width direction of the upper end edges of the left and right cab main body side portions 11c above the door opening 24 and extend in the front-rear direction. The roof side rail 32 forms a closed cross section at the upper edge of the left and right cab main body side surface portions 11c, and reinforces the upper edge. The front end portion of the roof side rail 32 is connected to the upper end portions of the left and right pillars 22 of the cab body front surface portion 11 b and the left and right end portions of the roof front rail 23.

  The high roof portion 12 includes a metal roof panel 41 that bulges upward so as to expand the internal space of the cab 10, and a plurality of (four in this embodiment) reinforcements 43 that reinforce the roof panel 41. , 44, 45, 46. The high roof portion 12 integrally includes a roof front portion 28, a roof upper surface portion 29, and left and right roof side portions 30, 31, and is disposed above the cab body 11 so as to cover the cab body 11 from above. It is fixed with respect to the main body 11.

  The roof panel 41 integrally includes a panel front surface portion 41a, a panel upper surface portion 41b, and left and right panel side surface portions 41c and 41d, and defines a space 42 opened downward and rearward. The panel front surface portion 41a extends from the upper end edge of the cab main body front surface portion 11b so as to be inclined rearward and upward. The panel upper surface portion 41b is bent from the upper edge of the panel front surface portion 41a and extends rearward. The left and right panel side surface portions 41c and 41d are bent from both edges in the vehicle width direction of the panel upper surface portion 41b and extend downward.

  The plurality of reinforcements 43 to 46 are front and rear reinforcements 43 and 44 having an inverted U shape, and left and right reinforcements 45 and 46 extending linearly in the front-rear direction. The front and rear reinforcements 43 and 44 are fixed to the lower surface of the panel upper surface portion 41b of the roof panel 41 and extend in the vehicle width direction, and are bent from both left and right ends of the upper surface reinforcement portions 43a and 44a. Left and right side reinforcing parts 43b, 44b (only the left side reinforcing parts 43b, 44b are shown in FIGS. 2 and 3), which extend to and are fixed to the inner surfaces of the left and right panel side parts 41c, 41d. Are formed in a hat shape in cross section. The left and right reinforcements 45 and 46 are formed in a hat shape in cross section, and their front end portions are fixed to the upper surface reinforcing portion 44a of the rear side reinforcement 44 and extend rearward linearly, and are fixed to the lower surface of the panel upper surface portion 41b. Is done.

  The roof front surface portion 28 is constituted by a panel front surface portion 41a and partitions the front of the cab 10 together with the cab body front surface portion 11b. The lower end edge portion of the panel front surface portion 41a of the roof panel 41 is fixed to the upper end edge portion of the cab body front surface portion 11b by welding or the like.

  The roof upper surface portion 29 is configured by a panel upper surface portion 41 b, upper and lower reinforcement portions 43 a and 44 a of the front and rear reinforcements 43 and 44, and left and right reinforcements 45 and 46. The upper surface reinforcing portions 43a and 44a of the front and rear reinforcements 43 and 44 are disposed to be separated from each other in the front and rear direction, extend in the vehicle width direction over the left and right sides of the panel upper surface portion 41b, and are fixed to the lower surface of the panel upper surface portion 41b. . The left and right reinforcements 45 and 46 are spaced apart from each other and extend from the vehicle width direction middle portion of the upper surface reinforcing portion 44a of the rear reinforcement 44 to the rear edge of the panel upper surface portion 41b. The rear end edge of the roof upper surface portion 29 is disposed at substantially the same position as the rear end edges of the left and right cab body side surface portions 11c in the vehicle longitudinal direction.

  The left and right roof side portions 30, 31 are constituted by left and right panel side portions 41c, 41d and left and right side reinforcement portions 43b, 44b of the front and rear reinforcements 43, 44, and the cab 10 together with the left and right cab body side portions 11c. Divide the sides of The front end edges of the left and right panel side faces 41c and 41d are continuous with the both edges in the vehicle width direction of the panel front face 41a, and the lower end edges of the left and right panel side faces 41c and 41d are the upper ends of the left and right cab body side faces 11c. It is fixed to the edge by welding or the like. The lower ends of the left and right side reinforcing portions 43b, 44b of the front and rear reinforcements 43, 44 are fixed to the upper end edges of the left and right cab body side portions 11c by welding or the like. The rear end edges of the left and right roof side surface portions 30, 31 are disposed at substantially the same position as the rear end edges of the left and right cab main body side surface portions 11c in the vehicle longitudinal direction.

  The back panel 13 is a metal panel member that intersects with the front-rear direction, and includes an upper region 38 that covers the rear of the high roof portion 12, and a lower portion that extends continuously downward from the upper region 38 and blocks the rear of the cab body 11. And a region 39 and defines the rear of the cab 10. The upper region 38 and the lower region 39 of the back panel 13 are integrally formed. The upper edge of the upper region 38 of the back panel 13 is fixed to the rear edge of the panel upper surface 41b of the roof panel 41 by welding or the like. The left and right edge portions of the upper region 38 of the back panel 13 are fixed to the rear edge portions of the left and right panel side surfaces 41c and 41d of the roof panel 41 by welding or the like. The lower end edge of the lower region 39 of the back panel 13 is fixed to the rear cab mount rail 18 of the cab main body bottom surface portion 11a by welding or the like. The left and right edge portions of the lower region 39 of the back panel 13 are fixed to the rear edge portions of the left and right cab body side portions 11c of the cab body 11 by welding or the like. On the front surface of the back panel 13, a plurality of (in this embodiment, three) reinforcements 40a, 40b, and 40c having a hat-shaped cross section are fixed. Of the plurality of reinforcements 40a to 40c, two reinforcements 40a and 40b extend in the vertical direction along the substantially vertical direction at positions separated in the vehicle width direction, and the remaining one of the reinforcements 40c extends in the vehicle width direction. Extend. The left and right reinforcements 40 a and 40 b are connected at their upper ends to the rear ends of the left and right reinforcements 45 and 46 of the roof upper surface portion 29, and their lower ends are above the cab block bracket 19 of the rear cab mount rail 18. Arranged and fixed to the rear cab mount rail 18. That is, the left and right reinforcements 40a and 40b extend substantially linearly in the vertical direction continuously between the rear edge of the roof upper surface portion 29 and the rear cab mount rail 18. The reinforcements 40c are arranged at substantially the same height as the upper end edges of the left and right cab main body side portions 11c and extend substantially linearly in the vehicle width direction. Connect the ends together.

  In the cab 10 configured as described above, an upper region 38 of the back panel 13 that closes the back of the high roof portion 12 and a lower region 39 that closes the back of the cab body 11 are integrally formed. That is, unlike the case where the upper region 38 and the lower region 39 of the back panel 13 are formed separately and connected to each other, the upper region 38 and the lower region 39 are arranged at the boundary between the upper region 38 and the lower region 39 of the back panel 13. Since no connection portion for connecting the region 39 is provided, stress concentration at the boundary between the upper region 38 and the lower region 39 when a load is input to the back panel 13 from above (or below) the cab 10 is reduced. Can be prevented. For this reason, the intensity | strength of the back panel 13 of the cab 10 with respect to the load input from the upper direction (or lower part) of the cab 10 can be improved, and the rear surface part (the back panel 13 and the some reinforcements 40a-40c are included). ) Can be ensured.

  Further, left and right reinforcements 40 a and 40 b fixed to the back panel 13 are continuously arranged in the vertical direction between the rear ends of the left and right reinforcements 45 and 46 of the roof upper surface portion 29 and the rear cab mount rail 18. It extends substantially linearly. For this reason, the strength of the left and right reinforcements 45 and 46 with respect to a load input from above (or below) the cab 10 can be ensured.

  Therefore, according to the present embodiment, it is possible to ensure the strength of the rear surface portion of the cab 10 against a load input from above (or below) the cab 10.

  The back panel 13 is not limited to metal, and may be a resin back panel, for example. Moreover, the roof panel 41 is not limited to metal, For example, a resin roof panel may be sufficient.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the content of the said embodiment, Of course, it can change suitably in the range which does not deviate from this invention. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, in the above embodiment, the cab structure according to the present invention is applied to the cab 10 of the high roof type truck 1, but is not limited to this, and is applied to a cab such as a high roof type tractor that pulls a trailer. May be.

1: Truck (vehicle)
10: Cab 11: Cab main body 11c: Left and right cab main body side surface 12: High roof portion 13: Back panel 24: Door opening 29: Roof upper surface portion 30, 31: Left and right roof side surface portions 38: Upper region 39: Lower region

Claims (1)

A cab structure for a high roof type vehicle,
A cab body having left and right cab body side portions formed with door openings;
The left and right roof side portions that extend upward from the upper end edges of the left and right cab body side portions and define the side of the cab together with the left and right cab body side portions, and the upper end edges of the left and right roof side portions are connected to each other. A high roof portion having a roof upper surface portion defining the upper side of the cab,
An upper region that is connected to a rear edge of the roof upper surface portion and a rear edge of the left and right roof side surfaces and closes the rear of the high roof portion, and is integrally formed with the upper region and is continuous from the upper region. A back panel that extends downward and has a lower region that is connected to rear end edges of the side portions of the left and right cab main bodies and closes the rear of the cab main body, and partitions the rear of the cab. The cab structure of the vehicle characterized by this.

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