JP2005255095A - Cab structure of cab-over-engine truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cab structure of a cab-over-engine truck capable of securing a living space for occupants. <P>SOLUTION: This cab 1 is formed so that an integral skeleton structure formed of the combination of a first skeleton structure having frame members 10 and 11, a second skeleton structure having frame members 20, 21, and 22, and a third skeleton structure having frame members 30, 31, and 32 can be formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cab structure for a cab overtrack.

The cab overtrack must increase the strength and rigidity of the cab as much as possible and reduce the amount of deformation of the cab in order to ensure the occupant's living space when a large external force is applied to the cab from the outside.
The cab structure of a general cab overtrack is mainly formed by arranging a monocoque structure constituted by each panel on a main sill skeleton structure.

However, with such a configuration alone, it is difficult to ensure a sufficient occupant living space when a large force is applied to the cab from the outside.
Therefore, a configuration in which a reinforcing member is added to the skeleton forming the cab is disclosed (see Patent Document 1).
Special table 2002-503180 gazette

However, in the technique disclosed in the above-mentioned Patent Document 1, since the reinforcement is only provided by providing a single reinforcing member to the skeleton of the cab, the efficiency and the improvement in the strength and rigidity of the cab are incomplete as the reinforcing means. It can be said that there is.
The present invention has been made to solve such problems, and the object of the present invention is to reliably absorb external force by arranging an efficient structure for improving the strength and rigidity of the cab. Another object of the present invention is to provide a cab overtrack cab structure that can be dispersed and sufficiently ensure the occupant's living space.

  In order to achieve the above object, in the cab overtrack cab structure according to claim 1, in the cab overtrack cab, both sides of the cab are integrated along the front, roof, rear, and floor of the cab. A first skeletal structure having a frame member that is integrated along the roof portion, the rear portion, and the floor portion of the cab on the inner side of both sides of the cab, and the roof surface of the cab; A second skeletal structure having a floor surface and a frame member integrally formed along the front portion, both side portions, and the rear portion of the cab between the roof surface and the floor surface; and The second skeleton structure is combined to form an integral skeleton structure.

  The cab overtrack cab structure according to claim 2, wherein the cab overtrack cab includes a cab roof surface, a floor surface, and between the roof surface and the floor surface, along a front portion, both side portions, and a rear portion of the cab. A frame member that is integrated along the roof, both sides, and the floor of the cab between the second skeletal structure each having an integral frame member, the front surface, the rear surface, and the front surface and the rear surface of the cab. And a third skeleton structure each having the above structure, and the second skeleton structure and the third skeleton structure are combined to form an integral skeleton structure.

  The cab overtrack cab structure according to claim 3, wherein the cab overtrack cab includes frame members that are integrated along the front, roof, rear, and floor of the cab on both sides of the cab. A first skeletal structure having a frame member integrated along the roof, rear, and floor of the cab, on the inner side of both sides of the cab, between the front surface of the cab, the rear surface, and between the front surface and the rear surface And a third skeleton structure each having a frame member integrated along the roof portion, both side portions, and the floor portion of the cab, and combining the first skeleton structure and the third skeleton structure into an integral skeleton It is characterized by a structure.

  5. The cab overtrack cab structure according to claim 4, wherein the cab overtrack cab includes frame members that are integrated along the front, roof, rear, and floor of the cab on both sides of the cab, respectively. A first skeletal structure having a frame member integrated along the roof portion, the rear portion, and the floor portion of the cab, on the inner side of both side surfaces of the cab, the roof surface, the floor surface, the roof surface, and the floor surface of the cab Between the second skeletal structure each having a frame member integrated along the front, both sides, and the rear of the cab, the front surface of the cab, the rear surface, and between the front surface and the rear surface, A third skeleton structure having frame members that are integrated along the roof portion, both side portions, and the floor portion of the cab, and the first skeleton structure, the second skeleton structure, and the third skeleton structure. Combine to form a unitary skeleton structure It is characterized.

  In the cab structure of the cab overtrack according to claim 5, the cab is mounted on a chassis frame of the vehicle via a cab mount, and the cab mount is attached to at least one of the frame members of the first to third skeleton structures. It abuts and supports the cab.

According to the cab structure of the cab overtrack according to claim 1 of the present invention using the above means, a force applied from the front-rear direction of the cab by disposing an efficient structure mainly improving the strength and rigidity in the front-rear direction of the cab. Can be reliably absorbed and dispersed.
Thereby, a sufficient space for the occupant's life can be secured.
According to the cab structure of the cab overtrack according to claim 2, the force applied from the side of the cab is reliably absorbed and dispersed by arranging an efficient structure mainly improving the strength and rigidity in the width direction of the cab. be able to.

According to the cab structure of the cab overtrack of claim 3, the force applied from the vertical direction of the cab is surely absorbed and dispersed by arranging an efficient structure mainly improving the strength and rigidity of the cab in the vertical direction. be able to.
According to the cab structure of the cab overtrack of claim 4, by arranging an efficient structure that improves the strength and rigidity in all directions of the cab, the force applied from any direction of the cab can be reliably absorbed and dispersed. .

  According to the cab structure of the cab overtrack of claim 5, the force applied to the cab can be efficiently transmitted from the frame member to the chassis frame and absorbed and dispersed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Referring to FIG. 1, there is shown a perspective view showing an appearance of a cab 1 having a cab overtrack cab structure according to the present invention.
As shown in the figure, the cab 1 has a roof panel 2 on the roof surface, a front panel 3 and a front window 4 on the front surface, a door 6 and a side panel 7 each having a side window 5 on a pair of side surfaces, a back panel 8 on the rear surface, The floor surface is constituted by a floor panel 9.

Referring to FIG. 2, a schematic perspective view of a front portion of a cab overtrack including the cab 1 is shown, and a skeleton structure of a cab structure of the cab overtrack according to the present invention is shown. Details of the cab structure will be described.
In the cab structure according to the present invention, the cab 1 has a first skeleton structure, a second skeleton structure, and a third skeleton structure as a skeleton structure. 3 to 5 are perspective views showing the first skeleton structure, the second skeleton structure, and the third skeleton structure, respectively. The skeleton structure will be described.

As shown in FIG. 3, the first skeletal structure includes frame members 10 and 10 that are integrated along the outer periphery of each side surface of the cab 1, that is, along the front, roof, rear, and floor of the cab 1. It is comprised by the frame members 11 and 11 integrated along each roof part, the rear surface, and the floor part of two places inside the width direction from the both sides | surfaces of the cab 1. As shown in FIG.
Specifically, the frame member 10 is integrally formed of front pillars 12 and 12, roof side rails 13 and 13, back pillars 14 and 14, and floor side members 15 and 15, and has a substantially annular shape when viewed from the side. In addition, the frame member 11 is on the inner side in the width direction of the cab 1 and at two positions that divide the cab 1 into approximately three equal parts in the width direction, the roof reinforcements 16 and 16 extending in the front-rear direction of the roof panel 2; A floor clean force 17, 17 extending in the vertical direction of the back panel 8 from the rear end of the roof line force 16, 16, and a floor extending in the front / rear direction along the floor panel 9 from the lower end of the back clean force 17, 17 The main sills 18 and 18 that support the panel 9 are integrally formed to form a substantially U-shape when viewed from the side.

As shown in FIG. 4, the second skeletal structure has frame members 20, 21 along the outer periphery of the roof surface, floor surface, and vertical center portion of the cab 1, that is, the front portion, both side portions, and the rear portion of the cab 1. , 22.
Specifically, the frame member 20 is formed integrally with the roof side rails 13, 13, the roof front rail 19, and the roof back rail 23 and has a substantially annular shape in plan view. Further, the frame member 21 is formed integrally with the floor side members 15, 15, the floor front member 24, and the floor back member 25, and has a substantially annular shape in plan view. Further, the frame member 22 has door beams 26 and 26 extending in the front-rear direction below the side windows 5 of the doors 6 and 6, and side beams 27 and 27 extending on the extension of the door beams 26 and 26 at the center in the vertical direction of the side panel 7. A front member 28 extending in the width direction so as to connect the front ends of the door beams 26 and 26 below the front window 4 of the front panel 3, and the rear ends of the side beams 26 and 26 at the center in the vertical direction of the back panel 8. A back member 29 extending in the width direction so as to be connected is integrally formed to form a substantially annular shape in plan view.

As shown in FIG. 5, the third skeleton structure has frame members 30, 31 along the outer periphery of the front surface, the rear surface, and the front-rear direction center portion of the cab 1, that is, the roof portion, both side portions, and the floor portion of the cab 1. 32.
Specifically, the frame member 30 is integrally formed of the roof front pillar 19, the front pillars 12 and 12, and the floor front member 24, and has a substantially annular shape when viewed from the front. Further, the frame member 31 is integrally formed of the roof back rail 23, the back pillars 14 and 14, and the floor back member 25, and has a substantially annular shape when viewed from the front. Further, the frame member 32 extends in the width direction so as to connect the side pillars 33 and 33 extending in the vertical direction to the front ends of the side panels 7 and 7 and the upper ends of the side pillars 33 and 33 connected to the center in the front-rear direction of the roof panel 2. The roof cross rail 34 and the floor cross member 35 extending in the width direction so as to connect the lower ends of the side pillars 33 and 33 to the center portion in the front-rear direction of the floor panel 9 are integrally formed to have a substantially annular shape when viewed from the front.

  In addition, the member of the part which is common in each frame structure is shared, and specifically, the roof side rails 13 and 13 and the floor side members 15 and 15 are common members of the first and second frame structures, and the roof The front rail 19, the roof back rail 23, the floor front member 24, and the floor back member 25 are common members of the second and third skeleton structures, and the front pillars 12 and 12 and the back pillars 14 and 14 are the first and third. It is a common member of the skeleton structure.

The portions where the frame member and the frame member intersect are connected by connecting members having corresponding shapes such as a cross and a T-shape.
Each frame member has a substantially hat-shaped cross section, the main sills 18 and 18 are joined from the outside of the cab 1, and the other members are joined from the inside of the cab 1 to the corresponding panels, respectively, and the closed cross section is joined. Forming a structure. For example, as shown in FIG. 6 which is a cross-sectional view taken along the line AA in FIG. 2, the roof side rails 13 and 13 are opened obliquely upward, and the roof rails 16 and 16 are substantially hat-shaped in cross section. Each of the flange surfaces is welded to the roof panel 2 to form a closed cross-sectional structure.

As shown in FIG. 2, the cab 1 having the skeleton structure is placed on a chassis frame 40 extending in the front-rear direction of the vehicle.
The chassis frame 40 has a pair of left and right side frames 41, 41 extending in the vehicle front-rear direction, the front ends of the side frames 41, 41 are connected by a cross member 42, and the portion corresponding to the rear end of the cab 1 is connected by a cab bridge 43. ing. Further, rubber cab mounts 44 are provided in the vicinity of both ends of the cross member 42 of the side frames 41 and 41 and at both ends of the cab bridge 43, respectively.

  More specifically, the cab 1 has an intersection portion between the front ends of the main sills 18 and 18 and the floor front member 24, and an intersection portion between the rear ends of the main sills 18 and 18 and the floor back member 25 by each cab mount 44. It is supported. That is, the cab 1 is fixed to the chassis frame 40 at the intersections between the frame members 11 and 11 and the frame member 21 and the frame member 30 and at the intersections between the frame members 11 and 11 and the frame member 21 and the frame member 32. Yes.

The operation of the cab overtrack cab structure according to the present invention constructed as above will be described below.
When a force is applied to the cab 1 from the outside, for example, when a force is applied from the front of the cab 1 due to a frontal collision or the like, inputs from the front are mainly the roof panel 2, the doors 6, 6, and the side panel 7. 7, the floor panel 9, the roof side rails 13 and 13, the floor side members 15 and 15, the roof rail force 16 and 16, the main sill 18 and 18, the door beams 26 and 26, and the side beams 27 and 27 are absorbed and dispersed. . Here, the roof side rails 13 and 13, the floor side members 15 and 15, the roof lane forces 16 and 16, the main sills 18 and 18, the door beams 26 and 26, and the side beams 27 and 27 are frame members 10 and 11 (first frame structure). ), Frame members 20, 21, and 22 (second skeleton structure) are formed, and these are combined to form an integral skeleton structure. Therefore, the entire frame members 10, 11, 20, 21, and 22 have a force. Absorbs and disperses. Further, since the frame members 11 and 11 are supported by the respective cab mounts 44, the force received by the cab 1 is efficiently transmitted to the chassis frame 40 through the respective cab mounts 44 and absorbed and dispersed.

  Such an action is the same not only when a force is applied from the front of the cab 1 but also when a force is applied from the side of the cab 1 and when a force is applied from the vertical direction of the cab 1. For example, if a force is applied from the side of the cab 1, the input from the side is mainly the frame members 20, 21, 22 (second skeleton structure), the frame members 30, 31, 32 (first If the force is applied from the up and down direction of the cab 1, the input from the up and down direction is mainly the frame members 10 and 11 (first skeleton structure). ), And the frame members 30, 31, 32 (third skeleton structure) are well absorbed and dispersed.

  Thus, in the cab structure of the cab overtrack according to the present invention, the cab 1 includes the frame members 10, 11 (first skeleton structure), the frame members 20, 21, 22 (second skeleton structure), the frame member 30, 31 and 32 (third skeleton structure) are formed, and these are combined to form an integral skeleton structure. Therefore, the structure and the strength and rigidity are improved efficiently without waste, and the cab 1 receives external force. Even in this case, the external force can be efficiently absorbed and dispersed by the entire frame member and the chassis frame 40.

Therefore, the amount of deformation of the cab 1 when an external force is applied to the cab 1 can be reduced, and a sufficient occupant living space can be secured.
Although the description of the embodiment of the cab overtrack cab structure according to the present invention has been completed above, the embodiment is not limited to the above embodiment.
For example, although the first to third skeleton structures are combined in the above embodiment, only two of the first to third skeleton structures may be combined. When the first and second skeleton structures are combined, the strength and rigidity of the cab in the longitudinal direction are mainly improved, and when the second and third skeleton structures are combined, the strength in the cab width direction is mainly increased. When the first and third skeleton structures are combined, the strength and rigidity of the cab in the vertical direction are mainly improved.

Moreover, in the said embodiment, although each frame member is provided as a skeleton member of the cab 1, you may make it provide separately as a reinforcement member which adds a one part or all part frame member to a basic skeleton member.
In the above embodiment, the cross section of the frame member is substantially hat-shaped, but the present invention is not limited to this, and other cross-sectional shapes may be used.

In the above embodiment, the cab mount 44 is made of rubber. However, the present invention is not limited to this. For example, a mount such as an air type or a coil spring may be adopted.
Furthermore, in the above-described embodiment, the type of track in which the cab 1 is fixed to the chassis frame 40 has been described as an example. However, the present invention is not limited to this. For example, a frame member positioned at the front portion of the cab and a front portion of the chassis frame A tilt-type track that can tilt the cab forward with a hinge interposed therebetween may be used. In the case of a tilt type track, the force applied to the cab is efficiently transmitted to the chassis frame via the cab mount and the hinge.

1 is a perspective view showing an appearance of a cab having a cab structure of a cab overtrack according to the present invention. It is a figure which shows the schematic perspective view of the front part of the cab overtrack containing a cab, Comprising: It is a figure which shows the frame | skeleton structure of the cab structure of the cab overtrack which concerns on this invention. It is a perspective view which shows the 1st frame | skeleton structure of the cab structure of the cab overtrack which concerns on this invention. It is a perspective view which shows the 2nd frame structure of the cab structure of the cab overtrack which concerns on this invention. It is a perspective view which shows the 3rd frame structure of the cab structure of the cab overtrack which concerns on this invention. It is sectional drawing which follows the AA line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cab 2 Roof panel 3 Front panel 6 Door 7 Side panel 8 Back panel 9 Floor panel 10, 11 Frame member (1st frame structure)
20, 21, 22 Frame member (second skeleton structure)
30, 31, 32 Frame member (third skeleton structure)
40 Chassis frame 44 Cab mount

Claims (5)

In the cab of the cab overtrack,
The cab has a frame member that is integrated along the front, roof, rear, and floor of the cab on both sides of the cab, and the roof, rear, and floor of the cab are located on both sides of the cab. A first skeletal structure having a frame member integrated along the part;
The roof surface of the cab, the floor surface, and between the roof surface and the floor surface, a second skeletal structure each having a frame member integrated along the front, both sides, and the rear of the cab,
A cab overtrack cab structure characterized in that the first skeleton structure and the second skeleton structure are combined to form an integral skeleton structure. In the cab of the cab overtrack,
A second skeletal structure having a frame member integrated along the front, both sides, and the rear of the cab between the roof surface of the cab, the floor surface, and between the roof surface and the floor surface;
A third skeletal structure having a frame member integrally formed along the roof portion, both side portions, and the floor portion of the cab between the front surface of the cab, the rear surface, and the front surface and the rear surface;
A cab overtrack cab structure characterized by combining the second skeleton structure and the third skeleton structure to form an integral skeleton structure. In the cab of the cab overtrack,
The cab has a frame member that is integrated along the front, roof, rear, and floor of the cab on both sides of the cab, and the roof, rear, and floor of the cab are located on both sides of the cab. A first skeletal structure having a frame member integrated along the part;
A third skeletal structure having a frame member integrally formed along the roof portion, both side portions, and the floor portion of the cab between the front surface of the cab, the rear surface, and the front surface and the rear surface;
A cab overtrack cab structure characterized in that the first skeleton structure and the third skeleton structure are combined to form an integral skeleton structure. In the cab of the cab overtrack,
The cab has a frame member that is integrated along the front, roof, rear, and floor of the cab on both sides of the cab, and the roof, rear, and floor of the cab are located on both sides of the cab. A first skeletal structure having a frame member integrated along the part;
A second skeletal structure having a frame member integrated along the front, both sides, and the rear of the cab between the roof surface of the cab, the floor surface, and between the roof surface and the floor surface;
A third skeletal structure having a frame member integrally formed along the roof portion, both side portions, and the floor portion of the cab between the front surface of the cab, the rear surface, and the front surface and the rear surface;
A cab overtrack cab structure characterized in that the first skeleton structure, the second skeleton structure, and the third skeleton structure are combined to form an integral skeleton structure. The cab is placed on a chassis frame of the vehicle via a cab mount,
The cab overtrack cab structure according to any one of claims 1 to 4, wherein the cab mount abuts at least one of the frame members of the first to third skeleton structures to support the cab.

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