JP2010149625A - Cabover vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lock a catch member and a hook member with sufficient strength at positions except an arch center side of a cab bridge during a truck collision, etc. <P>SOLUTION: In this cabover vehicle restraining moving of a cab side member 7 to the front by the arch-shaped cab bridge 4 provided on a side frame, chassis side hook members 5 are provided at arch base end parts 4a on right and left sides of the cab bridge 4, and a cab side catch member 6 which can be locked on the chassis side hook member 5 is provided in the cab side member 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cab over vehicle that restrains cab movement on a chassis side.

  2. Description of the Related Art Conventionally, a cab-over vehicle that restrains the movement of a cab with an arch-shaped cab bridge provided in a chassis is known. More specifically, the cab side catch member is connected to the cab side catch member in order to prevent the driver or occupant wearing the seat belt from being thrown out in the event of a truck collision, for example. There is known a structure in which the chassis is held by a chassis side hook member of a cab bridge fixed to the chassis side (see, for example, Patent Document 1). With the catch structure of the catch member and the hook member, the cab is securely connected to the chassis side to function as a seat belt and prevent the driver and passengers from being thrown out.

Japanese Utility Model Publication No. 6-1036

  However, in the conventional cab-over vehicle described above, there is a problem that these tanks hinder the design when it is desired to adopt a structure in which a power steering oil tank or surge tank is mounted on the arch center side of the cab bridge. . And while giving sufficient intensity | strength to the latching structure of a catch member and a hook member, it became necessary to form the said latching structure in the limited space.

  The present invention provides a cab-over vehicle capable of locking a catch member and a hook member with sufficient strength at a portion other than the arch center side of the cab bridge in a truck collision or the like in view of the problems of the related art. With the goal.

The present invention has been made as a means for solving such a problem.
The present invention relates to a cab-over vehicle that restrains forward movement of a cab-side member by an arch-shaped cab bridge provided on the chassis-side member, and a chassis side on the left and right arch base ends of the arch-shaped cab bridge. A hook member is provided, and a cab side catch member that can be locked to the chassis side hook member is provided on the cab side member.
According to the present invention, the chassis side hook member is provided at the left and right arch base end portions of the arch-shaped cab bridge, and the cab side member is provided with the cab side catch member that can be locked to the chassis side hook member. Therefore, when installing an oil tank or surge tank for power steering on the center side of the arch of the cab bridge, these tanks do not become an obstacle in space. Therefore, a sufficient space is secured for the chassis side hook member and the cab side catch member, and the cab side catch member is engaged with the chassis side hook member with sufficient strength except for the arch center side of the cab bridge at the time of a track collision or the like. Can be stopped.

In the present invention, it is preferable that the chassis-side hook member locking notch is formed, and the inclined surface and the banking portion are formed in the locking notch.
According to such a configuration, the time until the cab-side catch member and the chassis-side hook member come into contact with each other at the time of a track collision is shortened due to the presence of the banking portion. It is possible to prevent the bending time in the vehicle forward direction from being suddenly applied to the cab bridge. And damage to the frame coupling portion of the cab bridge can be suppressed. Further, since the present invention can be carried out only by depositing the chassis side hook member, it is not necessary to add a reinforcing component.

  In the cab-over vehicle of the present invention, the catch member and the hook member can be locked with sufficient strength other than the arch center side of the cab bridge at the time of a truck collision or the like.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative positions, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

FIG. 1 is an explanatory view showing an embodiment of a cab over vehicle of the present invention. As shown in the figure, the cab-over vehicle according to the present embodiment includes a cab 1 on which a driver and an occupant get on, and a chassis 2 on which the cab 1 is mounted. A cab bridge 4 is provided on the side frame 3 that is a chassis side member on the front side of the vehicle body. In the present invention, the chassis-side member may include all the chassis-side members, and particularly refers to the side frame 3 in the present embodiment.
The cab bridge 4 is formed in an arch shape. More specifically, the cab bridge 4 has an arch base end portion 4a on the left and right sides and an arch portion 4b above the arch base end portion 4a, and a central portion of the arch portion 4b has a linear shape along the horizontal direction. .

  A chassis-side hook member 5 is provided on the upper end side of the left and right arch base end portions 4 a of the arch-shaped cab bridge 4. The chassis side hook member 5 is formed with a locking notch 5a on which the cab side catch member 6 (shown in FIG. 2) is hooked. In the present invention, the arch base end portion includes the left and right side portions of the arch and the vicinity thereof.

FIG. 2 shows a connection structure between the cab side member and the cab bridge. As shown in the figure, the cab-side member 7 arranged along the vehicle body width direction is connected to the cab bridge 4 via a connecting member 9 and a connected member 8. In the present invention, the cab-side member may include all of the cab-side members, and in the present embodiment, particularly refers to the cab-side member 7 disposed along the vehicle body width direction. However, for example, the connecting member 9 is also included in the cab side member of the present invention.
The connected member 8 has a U-shaped cross section and a substantially trapezoidal side surface, and is fastened by bolting at the upper end side of the arch base end portion 4a and directly below the chassis side hook member 5. And the round projection part of the U-shaped connection member 9 of the cab side member 7 is inserted in the round hole part of this to-be-connected member 8. FIG.

  A complicatedly bent linear cab-side catch member 6 is provided on the center side in the vehicle body width direction of the U-shaped connecting member 9 of the cab-side member 7. And at the time of a track collision, the forward movement of the cab side member 7 and the connecting member 9 is restrained by the arched cab bridge 4 provided in the side frame.

Next, a case where the cab side catch member 6 is locked to the chassis side hook member 5 will be described. At the time of a track collision, the cab-side catch member 6 having a circular cross section moves horizontally from the position A to the position B in the engagement notch 5a of the chassis-side hook member 5 in FIG. At the position B, the cab-side catch member 6 and the locking notch 5a are in contact with each other. At this time, a force is transmitted from the cab side to the chassis side, but when a force toward the front of the vehicle body is further applied to the cab, the cab side catch member 6 ascends the slope of the locking notch 5a. This slope is, for example, 45 ° to 60 °. Finally, the cab-side catch member 6 completely climbs the slope of the locking notch 5a, and the cab-side catch member 6 is completely hooked on the locking notch 5a. The cab side member is securely held by the chassis side member.
Further, before the cab-side catch member 6 receives the full load on the locking notch 5a, the cab-side catch member 6 gradually receives the load while ascending the slope of the locking notch 5a while maintaining the contact. As a result, a sudden bending load is not applied to the cab bridge 4, and breakage of the joint portion between the cab bridge 4 and the side frame 3 can be suppressed.

  In the cab-over vehicle according to the embodiment described above, the chassis-side hook member 5 is provided on the left and right arch base end portions 4 a of the arch-shaped cab bridge 4, and can be locked to the chassis-side hook member 5. Since 6 is provided on the cab side member 7, when an oil tank for power steering or a surge tank is mounted on the arch center side of the cab bridge 4, these tanks do not become an obstacle in space. Accordingly, a sufficient space for the chassis side hook member 5 and the cab side catch member 6 is secured, and the cab side catch member 6 is attached to the chassis side hook member 5 at a position other than the arch center side of the cab bridge 4 at the time of a track collision or the like. It can be locked with sufficient strength.

FIG. 4 shows a modification of the chassis side hook member 5 of FIG. The chassis-side hook member 5 shown in FIG. 4 is different from that shown in FIG. 3 in that a metal plate 10 is formed in the locking notch 5a. When the metal bank 10 is formed in this way, the cab side catch member 6 can be locked to the chassis side hook member 5 at an early stage.
That is, the cab-side catch member 6 and the chassis-side hook member 5 are reduced in time until the cab-side catch member 6 comes into contact with the inclined surface of the chassis-side hook member 5 at the time of a track collision due to the presence of the banking portion 10. Since the length of the slope extends, the time until the cab-side catch member 6 is completely locked to the chassis-side hook member 5 becomes longer, and a bending load in the vehicle forward direction is suddenly applied to the cab bridge 4. Can be deterred. And damage to the frame coupling portion of the cab bridge 4 can be suppressed. Further, since the present invention can be carried out only by depositing the chassis side hook member 5, it is not necessary to add a reinforcing component. As a result, the reinforcing member can be reduced in size and weight and contribute to the weight reduction of the entire vehicle.

  In FIG. 4, the cab-side catch member 6 comes into contact with the banking portion 10 at the position B. Then, although it moves to the position of C, since the surface of the banking part 10 is smoothly curved, the cab side catch member 6 moves the surface of the banking part 10 smoothly. When the cab side catch member 6 moves from the C position to the D position, the cab side catch member 6 is completely locked to the chassis side hook member 5.

  In the cab-over vehicle of the present invention, the catch member and the hook member can be locked with sufficient strength other than the arch center side of the cab bridge at the time of a truck collision or the like. The cab-over vehicle according to the present invention has a sufficient space for providing the chassis side hook member in the central portion of the cab bridge, in addition to the case where the space for providing the chassis side hook member in the central portion of the cab bridge cannot be ensured. Even if it can be applied, it can be applied.

FIG. 1 is an explanatory view showing a main part of an embodiment of a cab over vehicle of the present invention. FIG. 2 is an explanatory view showing a connection structure between the cab side member and the cab bridge. FIG. 3 is an explanatory view showing a locking process of the cab side catch member to the chassis side hook member. FIG. 4 is an explanatory view showing a form in which a depositing portion is formed on the chassis side hook member of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cab 2 Chassis 3 Side frame 4 Cab bridge 4a Arch base end part 4b Arch part 5 Chassis side hook member 5a Locking notch part 6 Cab side catch member 7 Cab side member 8 Connected member 9 Connecting member 10 Filling part

Claims (2)

In a cab-over vehicle that restrains forward movement of the cab-side member with an arch-shaped cab bridge provided on the chassis-side member,
A chassis side hook member is provided at the left and right arch base end portions of the arch-shaped cab bridge, and a cab side catch member that can be locked to the chassis side hook member is provided on the cab side member. A cab over car.   The cab-over vehicle according to claim 1, wherein the chassis-side hook member locking notch is formed, and the locking notch is formed with a slope portion and a banking portion.

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