JP3915957B2 - Cab of cab over type truck - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has a floor panel that constitutes a floor surface of a passenger compartment, and the floor panel has a central portion in the cab width direction that is above a seat support surface that is located on each outer side in the cab width direction of the central portion. The central portion has a top wall in the center of the cab width direction, and a side wall connecting the top wall and each seat support surface, and the top wall includes a front wall front portion, BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cab of a cab-over type truck including a top wall rear portion having a height higher than that of the top wall front portion and a top wall inclined portion positioned between the top wall front portion and the top wall rear portion.
[Prior art]
In the cab-over type truck, the engine is mounted below the cab. Therefore, in order to prevent interference between the floor panel of the cab that forms the floor of the passenger compartment and the engine, the center part of the floor panel in the cab width direction is used. The floor panel portion on the outer side in the cab width direction at the center portion is used as a seat support surface, and the driver's seat and the passenger seat are supported here, respectively. The center part of the floor panel has a top wall at the center in the cab width direction and a side wall connecting the top wall and each seat support surface, and the whole is formed in a tunnel shape. Thus, by making the seat support surface lower than the center portion of the floor panel, it is possible to improve the passenger's ability to get in and out of the passenger compartment.
[0003]
By the way, in this type of cab-over type truck, even when a large external force is applied to the cab from the front, the cab is greatly compressed and deformed in the front-rear direction, preventing the passenger space in the passenger compartment from being narrowed. The cab needs to be configured so that it can. For this reason, conventionally, the overall thickness of the floor panel is set large, or the thickness of the floor frame fixed to the lower side of the floor panel is set large to increase the rigidity and strength of the entire cab. On the other hand, even when a large external force was applied from the front, the cab deformation prevented the passenger space from being narrowed.
[0004]
However, if the thickness of the floor panel or the floor frame is increased, the weight of the cab increases and the cost increases.
[0005]
[Problems to be solved by the invention]
The object of the present invention is to prevent the cab from being greatly compressed and deformed to narrow the occupant space when an external force is applied to the cab from the front even if the thickness of the floor panel or the floor frame is set to be thinner than before. The object is to provide a cab of a cab-over type truck of the type described at the beginning.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in a cab of a cab-over type truck of the type described at the beginning, a beam extending in the front-rear direction of the cab is fixed to each side wall of the central portion. The rear side portion is inclined so as to be lower than the cab front side portion, and each side wall portion corresponding to the top wall inclined portion is changed from each side wall portion corresponding to the top wall front portion. A cab of a cab-over type truck characterized by extending to each side wall portion corresponding to the rear portion of the top wall is proposed (claim 1).
[0007]
In order to achieve the same object, in the cab of the cab-over type truck described at the beginning, the bead extending in the front-rear direction of the cab is formed on each side wall of the central portion. The portion on the cab rear side is inclined so as to be lower than the portion on the cab front side, and the portion of each side wall corresponding to the top wall inclined portion is changed from the portion of each side wall corresponding to the front portion of the top wall. A cab of a cab-over type truck is proposed, characterized in that the cab extends to a portion of each side wall corresponding to the rear portion of the top wall (claim 2).
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings, and the conventional defects described above will be clarified more specifically with reference to the drawings.
[0009]
FIG. 1 is a side view showing an example of a cab of a cab over type truck. A cab 1 shown here includes a roof panel 2 that defines an upper portion of a passenger compartment, a quarter panel 3 that constitutes a side portion of the cab 1, a vehicle Various panels such as a floor panel 4 constituting the floor of the compartment, a back panel 5 defining the rear of the compartment, a dash panel 6 defining the front of the compartment, and a front panel 7 located in the front of the cab 1 have. The dash panel 6 and the front panel 7 are fixed to each other at the upper end, and the lower end of the dash panel 6 is fixed to the front end of the floor panel 4. FIG. 2 is a perspective view of the floor panel 4 shown in FIG. 1 taken out. As can be seen from this figure, a pair of floor frames 8 extending substantially in the front-rear direction of the cab 1 are provided below the floor panel 4. These floor frames 8 are fixed to the lower surface of the floor panel 4. Further, reference numeral 9 in FIG. 1 denotes a front pillar, and 10 denotes a windshield provided in the front part of the passenger compartment.
[0010]
In addition, the code | symbol F shown in each figure has shown the advancing direction of the cab over type | mold track, and the code | symbol W has shown the width direction of the cab. The terms “front” or “rear” used in the present specification mean front and rear with reference to the forward direction F of the cab-over track, and the horizontal direction perpendicular to the front and rear direction is the width direction W of the cab.
[0011]
The above-mentioned floor panel 4, back panel 5, dash panel 6, floor frame 8 and other panels 2, 3, 7 and front pillar 9 are made of a high-strength material such as a steel plate, for example. The floor frame 8 of the cab 1 configured in this way is supported by the chassis frame 11 shown in FIG. 1 via an intermediate member (not shown), whereby the cab 1 is mounted on the chassis frame 11. A chassis (not shown) is supported on the chassis frame portion behind the cab 1.
[0012]
On the other hand, as shown in FIG. 1, in the passenger compartment of the cab 1, the driver seat and the passenger seat indicated by reference numeral 12 are supported on the floor panel 4 via leg stands 13 and 14, respectively. In FIG. 2, the respective leg bases 13 and 14 are indicated by chain lines, and the driver seat and the passenger seat 12 (FIG. 1) are provided on the seat support surfaces 15 and 16 of the floor panel 4 shown in FIG. 13 and 14 are supported respectively. Reference numeral 17 in FIG. 1 indicates a seat cushion of each seat 12, and the seat cushion 17 is supported by each leg base 13, 14.
[0013]
An engine (not shown) is mounted on the chassis frame 11, and the engine is located below the cab 1 and in the center in the width direction of the cab 1. Therefore, in order to prevent the engine and the cab 1 from interfering with each other, the floor panel 4 has a cab width direction center portion 18 protruding upward as shown in FIG. The engine is arranged in a space below the protruding central portion 18. The central portion 18 includes a top wall 19 at the center in the cab width direction, and side walls 20 and 21 that integrally connect the top wall 19 to the seat support surfaces 15 and 16, respectively. Accordingly, the seat support surfaces 15 and 16 of the floor panel 4 are positioned on the outer sides of the central portion 18 in the cab width direction, and are positioned below the protruding central portion 18. Thus, by reducing the height of the seat support surfaces 15 and 16, the passenger can easily get in and out of the passenger compartment.
[0014]
Further, as shown in FIG. 2, the rear portion 22 of the floor panel 4 also projects upward from the seat support surfaces 15 and 16, and the seat support surfaces 15 and 16 are gradually increased in height toward the rear. It is connected to the protruding rear portion 22 via the inclined portions 23 and 24. For example, an air cleaner (not shown) is disposed in the lower space of the rear portion 22.
[0015]
As described above, the cab of the illustrated cab-over-type truck has the floor panel 4 constituting the floor surface of the passenger compartment, and the floor panel 4 has a cab width direction central portion 18, the cab of the central portion 18. It protrudes above the seat support surfaces 15 and 16 located on the outer sides in the width direction, and the central portion 18 includes a top wall 19 at the center of the cab width direction, the top wall 19 and the seat support surfaces 15 and 16. And side walls 20 and 21 respectively connecting the two. Moreover, as shown in FIG. 2, the top wall 19 includes a top wall front portion 19A, a top wall rear portion 19B having a height higher than the top wall front portion 19A, a top wall front portion 19A and a top wall rear portion 19B. It is comprised from the top wall inclination part 19C located between.
[0016]
As shown in FIG. 1, a steering wheel 25 is positioned in front of the driver's seat in the passenger compartment, and the steering shaft 26 is supported by a bracket 27 fixed to the dash panel 6. Further, an instrument panel 28 is also fixed to the dash panel 6.
[0017]
Here, when a large external force P is applied from the front side to the cab 1 of the cab-over type truck as described above, the cab is greatly compressed and deformed, and the dash panel 6 is permanently deformed so as to enter the vehicle interior side. Since the steering wheel 25 and the instrument panel 28 approach the side of an unillustrated occupant seated on the seat 12, the dash panel 6 faces backward even when a large external force P is applied to the cab 1. Therefore, it is necessary to keep the amount of permanent deformation small.
[0018]
Therefore, conventionally, as described above, the thickness of the floor panel 4 and the floor frame 8 is increased to increase the rigidity and strength of the entire cab-over truck, and when the external force P is input to the cab 1, The panel 6 was prevented from being greatly bent and deformed so as to enter the vehicle interior side. However, when the plate thickness of the floor panel 4 or the floor frame 8 is increased in this way, the cost of the cab increases and the disadvantage of increasing the weight is inevitable.
[0019]
Therefore, in the cab 1 of this example, as shown in FIG. 2, beams 29 and 30 extending in the front-rear direction of the cab 1 are fixed to the respective side walls 20 and 21 of the central portion 18. Each beam 29, 30 passes from the portion of each side wall 20, 21 corresponding to the above-described top wall front portion 19A to the side wall 20, 21 corresponding to the top wall inclined portion 19C, and corresponds to the top wall rear portion 19B. It extends to the part of each side wall 20, 21. These beams 29 and 39 are made of a high-strength material such as steel, for example, and are fixed to the side walls 20 and 21 by fixing means such as welding or bolting.
[0020]
When the beams 20 and 21 extending in the front-rear direction of the cab 1 are fixed to the side walls 20 and 21 as described above, when a large external force P is applied to the cab 1 from the front, the beams 20 and 21 are moved to the dash panel. 6 is firmly supported from the vehicle interior side, so that the dash panel 6 can be prevented from being greatly bent and deformed toward the vehicle interior side.
[0021]
At this time, when the beams 29 and 30 are arranged horizontally, the side walls 20 and 21 are compressed and deformed in the front-rear direction of the cab 1 by the external force applied to the dash panel 6, and the beams 29 and 30 move rearward. And the support function of the dash panel 6 by the said beams 29 and 30 falls. Therefore, as shown in FIG. 2, the beams 29 and 30 in this example are inclined so that the portions 29A and 30A on the cab rear side are lower than the portions 29B and 30B on the cab front side. Yes. When the postures of the beams 29 and 30 are set in this way, when a force larger than the front is applied to the beams 29 and 30 via the dash panel 6, the beams 29 and 30 are shown in FIG. As indicated by an arrow Q, a compressive load directed obliquely downward toward the rear acts, so that the beams 29 and 30 are firmly supported by the entire floor panel 4, and the beams 29 and 30 move greatly rearward. Never do. Accordingly, the beams 29 and 30 firmly support the dash panel 6 while suppressing the compressive deformation of the side walls 20 and 21, and prevent the dash panel 6 from being greatly bent and deformed toward the vehicle interior side. In this way, the steering wheel 25 and the instrument panel 28 can be moved toward the seat 12 when the external force P is applied to the cab 1 without setting the thickness of the floor panel 4 or the floor frame 8 to be large as in the prior art. It is possible to prevent problems that are greatly approaching. This can reduce the weight and cost of the cab.
[0022]
When a large external force P is applied to the cab 1, the floor panel 4 and the floor frame 8 have a small function to directly support the dash panel 6. Therefore, by increasing the thickness of these plates, the dash panel 6 is moved to the vehicle interior side. In order to suppress the bending deformation, the thickness of the floor panel 4 and the floor frame 8 must be considerably increased over the whole, and the cost and weight increase are inevitable. On the other hand, when the beams 29 and 30 are fixed to the side walls 20 and 21, the space between the dash panel portion to which the steering shaft 26 and the instrument panel 28 are attached and the floor panel portion to which the seat 12 is attached is directly reinforced. It is possible to prevent the dash panel 6 from being deformed rearward when the external force P is applied while suppressing an increase in the weight and cost of the cab 1. In this manner, it is possible to effectively suppress the steering wheel 26 and the instrument panel 28 from moving rearward, and it is possible to secure an occupant space.
[0023]
Further, when the front end portions 29C, 30C of the beams 29, 30 are fixed to the dash panel 6 by fixing means such as welding or bolting, the above-described effects can be further enhanced. However, the front end portions 29C, 30C are dashed. The above-described effect can be obtained even if the panel 6 is merely brought into contact with the panel 6 or slightly separated.
[0024]
Further, instead of providing the beams 29 and 30 shown in FIG. 2, or providing these beams 29 and 30, as shown in FIG. 3, the side walls 20 and 21 of the central portion 18 of the floor panel 4 are provided with cabs. 1, bead 31 and 32 extending in the front-rear direction are formed, and these beads 31 and 32 are inclined so that the portions 31A and 32A on the cab rear side are lower than the portions 31B and 32B on the cab front side. However, the same effects as when the beams 29 and 30 are provided can be obtained. The beads 31 and 32 perform the same reinforcing function as the beams 29 and 30. These beads 31, 32 also pass from the portions of the side walls 20, 21 corresponding to the top wall front portion 19A to the top wall rear portion 19B through the portions of the side walls 20, 21 corresponding to the top wall inclined portion 19C. It extends to the corresponding part of each side wall 20, 21. Moreover, in the example shown in FIG. 3, since the rigidity and strength of the cab 1 are increased by the beads 31 and 32 formed on the floor panel itself, the increase in the weight of the cab and the increase in its cost can be more effectively suppressed. Can do. The other configuration of the cab shown in FIG. 3 is the same as the cab shown in FIGS. 1 and 2.
[0025]
【The invention's effect】
According to the cab of the cab-over type truck according to claim 1, the cab is greatly compressed when a large external force is applied to the cab from the front without increasing the thickness of the floor panel as in the prior art. Deformation can be prevented.
[0026]
According to the cab of the cab-over type truck described in claim 2, it is possible to further suppress the increase in the weight and cost of the cab and to achieve the above-described effect.
[Brief description of the drawings]
FIG. 1 is a side view of a cab.
FIG. 2 is a perspective view showing a cab floor panel and elements associated therewith.
FIG. 3 is a perspective view similar to FIG. 2, showing another example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cab 4 Floor panel 15 Seat support surface 16 Seat support surface 18 Center part 19 Top wall 19A Top wall front part 19B Top wall rear part 19C Top wall inclination part 20 Side wall 21 Side wall 29 Beam 29A part 29B part 30 Beam 30A part 30B part 31 Bead 31A part 31B part 32 Bead 32A part 32B part W Width direction

Claims (2)

The floor panel has a floor panel that constitutes a floor surface of the passenger compartment, and the floor panel has a center portion in the cab width direction that protrudes above a seat support surface that is located on each outer side in the cab width direction of the center portion. The central portion has a top wall in the center of the cab width direction, and side walls connecting the top wall and the seat support surfaces, respectively. The top wall includes a top wall front portion and the top wall front portion. In a cab of a cab over type truck comprising a top wall rear portion having a higher height and a top wall inclined portion located between the top wall front portion and the top wall rear portion,
A beam extending in the front-rear direction of the cab is fixed to each side wall of the central portion, and the beam is inclined so that a portion on the cab rear side is lower than a portion on the cab front side, and A cabover extending from a portion of each side wall corresponding to the front portion of the top wall to a portion of each side wall corresponding to the rear portion of the top wall through the portion of the side wall corresponding to the top wall inclined portion. Type truck cab. The floor panel has a floor panel that constitutes a floor surface of the passenger compartment, and the floor panel has a center portion in the cab width direction that protrudes above a seat support surface that is located on each outer side in the cab width direction of the center portion. The central portion has a top wall in the center of the cab width direction, and side walls connecting the top wall and the seat support surfaces, respectively. The top wall includes a top wall front portion and the top wall front portion. In a cab of a cab over type truck comprising a top wall rear portion having a higher height and a top wall inclined portion located between the top wall front portion and the top wall rear portion,
A bead extending in the front-rear direction of the cab is formed on each side wall of the central portion, and the bead is inclined so that a portion on the cab rear side is lower than a portion on the cab front side, A cabover extending from a portion of each side wall corresponding to the front portion of the top wall to a portion of each side wall corresponding to the rear portion of the top wall through the portion of the side wall corresponding to the top wall inclined portion. Type truck cab.

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