JP3831122B2 - Mounting structure for collision detection sensor of cabover type automobile - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a collision detection sensor mounting structure for a cab-over type automobile, and in particular, a collision detection sensor capable of accurately transmitting only an impact caused by a collision to an occupant protection device represented by an airbag or a pretensional seat belt. This relates to the mounting structure.
[0002]
[Prior art]
As a conventional example of a collision detection sensor mounting device for a cab-over type automobile, for example, as disclosed in Japanese Patent Laid-Open No. 9-323601, a collision detection sensor is mounted around the front skeleton of the cab to reduce the impact generated on the cab. Some of them are surely transmitted to the collision detection sensor.
[0003]
However, when a collision detection sensor is mounted around the skeleton at the front of the cab as in the conventional collision detection sensor mounting structure, an impact from the front of the cab is directly transmitted to the collision detection sensor. Therefore, not only the impact caused by the collision that requires the airbag to be deployed, but also the impact caused by the minor collision or the like that does not require the deployment of the airbag (hereinafter referred to as the “unnatural impact”) is easily transmitted to the collision detection sensor. In addition, the collision detection sensor may output a collision signal even in a slight collision, and may activate a protective device such as an airbag.
[0004]
In addition, when a collision detection sensor is attached to the front skeleton member of the cab as in the past, the installation space for other equipment is limited by the installation space for this collision detection sensor, and the interior space of the cab is sacrificed. As a result, the habitability deteriorates and the accessibility to the collision detection sensor increases, so that it is difficult to protect the collision detection sensor from mischief and the like.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an attachment device that can reliably transmit a shock due to a collision while avoiding a nasty shock that does not require deployment of an airbag or the like. .
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides at least a part of a bulging portion formed by bulging a part of a floor panel toward a passenger compartment side, left and right floor frames extending in the front-rear direction, and a vehicle width direction. While the front cross member and the intermediate cross member are surrounded, a part of the bulging portion surrounded by the floor frame and the front cross member and the intermediate cross member is recessed to constitute the mounting portion of the collision detection sensor. It is characterized by that.
[0007]
In addition, the cover which covers the recessed part which forms the attachment part of a collision detection sensor can be attached to a floor panel, and the prevention effect, such as mischief to a collision detection sensor, can be heightened, improving the habitation property of a cab.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an exploded perspective view showing a schematic configuration of an embodiment of a collision detection sensor mounting structure for a cab-over type automobile according to the present invention, FIG. 2 is a schematic plan view of the mounting structure shown in FIG. 1, and FIG. It is AA sectional drawing.
[0009]
In these figures, the central portion of the floor panel 1 constituting the cab floor that constitutes the cab of the cab-over type automobile is swelled toward the passenger compartment side as in the case of the floor panel in the conventional cab-over type automobile. By providing the protruding bulging portion 2, interference with an engine (not shown) disposed below the floor panel is avoided.
[0010]
Left and right floor frames 3 extending in the front-rear direction are fixed to both sides of the lower surface of the floor panel 1 with the bulging portion 2 interposed therebetween. Further, the front end portions of the floor frame 3 are coupled to each other by a front cross member 5 extending in the vehicle width direction via a dash panel 4, and the intermediate portions of the floor frame 3 are coupled to each other via an intermediate cross member 6 extending in the vehicle width direction. Are combined. Then, the rear end portion of the floor frame 3 is coupled via the rear cross member 7 and the back panel 8 extending in the vehicle width direction, thereby ensuring the rigidity of the floor panel 1 and the strength of the cab.
[0011]
Further, a recess 9 is formed in the center of the upper front corner portion surrounded by the floor frame 3, the front cross member 5, and the intermediate cross member 6 in the bulging portion 2. Then, the airbag computer 10 incorporating the collision detection sensor is attached to the recess 9, and the cover 11 that follows the general surface of the bulging portion 2 shown by a two-dot chain line in FIG. It is covered. In addition, although the recessed part 9 is formed by attaching the components which make a saucer shape different from the floor panel 1 as shown in embodiment, it may be based on shaping | molding of the floor panel 1. FIG.
[0012]
That is, in this embodiment, since the airbag computer 10 incorporating the collision detection sensor is attached to the floor panel 1 surrounded by the floor frame 3, the front cross member 5, and the intermediate cross member 6, the airbag computer The impact transmitted to the cab can be accurately transmitted to the airbag computer 10 while reliably protecting the mounting portion 10 from deformation due to collision.
[0013]
On the other hand, the floor panel 1 is interposed between the floor frame 3, the front cross member 5, the intermediate cross member 6 and the airbag computer 10. Therefore, since the impact transmitted to these members is transmitted to the airbag computer 10 after being mitigated by the elastic deformation of the floor panel 1, malfunctions due to transmission of minor impacts that do not require deployment of the airbag are avoided. However, the impact caused by the collision can be accurately transmitted to the airbag computer 10.
[0014]
Further, since the airbag computer 10 is attached to the bulging portion 2 of the floor panel 1, the attachment portion of the airbag computer 10 is not easily affected by the cleaning water when the floor is cleaned, and the cleaning water has entered. Also, it is easily drained from the mounting portion of the airbag computer 10. Furthermore, since the attachment portion of the airbag computer 10 is covered with the cover 11, the effect of preventing tampering with the airbag computer 10 is enhanced. Note that when the cover 11 that covers the mounting portion of the airbag computer 10 is covered with a seat or a floor console (not shown), the advantage of preventing the misalignment that has deteriorated the accessibility to the airbag computer 10 can be enhanced. There is.
[0015]
In the above embodiment, the cover 11 along the general surface of the floor panel 1 is attached to the recess 9 to protect the airbag computer 10, while avoiding deterioration in comfort due to the cover 11 protruding greatly toward the passenger compartment. However, if it is difficult to make the recess 9 sufficiently deep due to the size of the airbag computer 10 or the space below the floor panel 1, the cover 11 is formed as in the embodiment shown in FIG. A part can be inflated to the vehicle compartment side to avoid interference with the airbag computer 10, and as shown in the figure, the bottom surface of the recess 9 becomes lower as it goes to the front of the vehicle, for example. When it is made to incline, the drainage property of the recessed part 9 can be made higher.
[0016]
Moreover, in the said embodiment, although the recessed part 9 by which the upper direction and the front were open | released was provided in the bulging part 2, and the attachment part of the airbag computer 10 was comprised, depending on the position of a recessed part, an upper part and a side are open. The recessed portion 9 may be provided, or a recessed portion that is open only at the top may be provided, and the recessed portion 9 may be sealed with the cover 11 to ensure waterproofness. The present invention is not limited to the embodiment.
[0017]
Furthermore, in all of the above embodiments, the cover 11 is attached to the recess 9 to increase the effect of preventing tampering with the airbag computer 10, but instead of the cover 11, equipment such as a seat or a floor console is used. The cover 11 can be simplified by covering the recess 9, or the cover 11 can be omitted. Furthermore, in the above embodiment, the case where a collision detection sensor is built in the airbag computer 10 has been described. However, only the collision detection sensor (not shown) is attached to the recess 9 so that the main body of the airbag computer 10 is placed in another location. Can also be installed.
[0018]
【The invention's effect】
As is apparent from the above description, the present invention provides a left and right floor frame extending in the front-rear direction, at least a part of a bulging portion formed by bulging a part of the floor panel toward the passenger compartment side, and a vehicle width direction. The front cross member and the intermediate cross member along the cross section are used to construct the mounting part of the collision detection sensor, so that only impacts caused by collisions that require deployment of the airbag without transmitting a nasty impact are collided. It can be reliably transmitted to the detection sensor.
[0019]
Moreover, since the recessed part was provided in the bulging part of the floor panel enclosed by the floor frame, the front cross member, and the intermediate cross member, and the collision detection sensor was attached, the comfortability deteriorated by attaching the collision detection sensor There is also an advantage that can be prevented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a schematic configuration of an embodiment of a collision detection sensor mounting structure for a cab over type automobile according to the present invention.
FIG. 2 is a schematic plan view of the mounting structure shown in FIG.
3 is a cross-sectional view taken along the line AA in FIG.
4 is a cross-sectional view corresponding to the cross section AA of FIG. 2 according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor panel 2 Expanding part 3 Floor frame 4 Dash panel 5 Front cross member 6 Middle cross member 7 Rear cross member 8 Back panel 9 Recessed part 10 Airbag computer 11 Cover

Claims (1)

Left and right floor frames (3) and (3) extending in the front-rear direction, and at least a part of a bulge portion (2) formed by bulging a part of the floor panel (1) toward the passenger compartment, and the vehicle width direction And the front cross member (5) and the intermediate cross member (6) along the wall, while the floor frame (3) (3), the front cross member (5), and the bulge surrounded by the intermediate cross member (6). A collision detection sensor mounting structure for a cab-over type vehicle, wherein a mounting portion for a collision detection sensor (10) is formed by recessing a part of the exit (2) .

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