JPH09301124A - Collision detecting sensor attaching device in cab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable collision detecting sensor to be sufficiently protected by providing a front surface side plate part laid along the vehicle lateral direction and also a side surface side plate part on which a collision detecting sensor is mounted as well as being arranged in parallel to the vehicle longitudinal direction to be connected to the front surface side plate part. SOLUTION: A front surface side plate part 21 laid along the vehicle lateral direction and a side surface side plate part 22 arranged in parallel to the vehicle longitudinal direction so as to be connected to the front surface side plate part 21 are composed in their section area in T-letter shape. Spot welding connection is applied between the upper side plate port 23 of the front surface side plate part 21 and the flange 22A of the side surface plate part 22 and between the vertical plate part 24 of the front surface side plate part 21 and the flange 22B of the side plate part 22, and the side surface side plate part 22 is made perpendicular to the front surface side plate part 21. In such kind of connection, the front surface side plate part 21 and the side surface side plate part 22 are integrated in one body to form a rigid structure, to be hardly crashed by means of any external force. And a collision detecting sensor 26 is attached to the side plate part 22 by means of bolts. Thereby, protection of a collision detecting sensor can be continued up to the timing of collision end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment device for a cab collision detection sensor in a so-called cabover type freight vehicle (hereinafter referred to as "cabover vehicle").

[0002]

2. Description of the Related Art In recent years, airbag systems have been introduced into passenger cars to ensure the safety of occupants in the event of a collision.
The airbag system detects the impact (deceleration) at the time of collision with a collision detection sensor attached to the vehicle body, determines whether the airbag should be deployed by the control unit, and sends an electric signal to the steering wheel if necessary. Is sent to an inflator attached to the airbag to burn the gas generating agent to inflate the airbag.

The airbag system must operate reliably at one time, and vice versa, regardless of how often it operates once in a vehicle's life. When it is not (non-collision or a minor collision that does not require the deployment of an airbag), it must be prevented from operating, and therefore high reliability of the device is required.

Such an airbag system has been put to practical use in passenger cars by using a collision detection sensor as disclosed, for example, in Japanese Utility Model Publication No. 1-167946. Actual Kaihei 1-16
The collision detection sensor in 7946 is shown in FIG.

In the figure, the collision detection sensor 1 is provided at a portion 103 where a rear end surface 101A of a front side member 101 extending in the longitudinal direction of a vehicle body and a dashboard 102 are joined.
04 is stuck. However, in a cab-over car,
Due to various conditions such as vehicle weight, load condition, collision mode such as collision range, cab structure, etc., the sensing condition of the collision detection sensor is different, which makes it difficult to reliably and accurately detect the collision detection sensor. Practical application is difficult.

Therefore, in a cab-over vehicle, a collision detection sensor may be attached to a portion of the floor panel or an aggregate of the floor panel near the occupant in the cab, or the collision detection sensors may be attached to a plurality of portions in the cab. Conceivable. FIG. 12 shows an example of a cab-over vehicle when the collision detection sensor is mounted on the floor panel.

In the figure, reference numeral 201 is a cab-over vehicle, and this cab-over vehicle 201 has a frame 202, and a cab 203 is mounted on the frame 202. The cab 203 is formed in a box shape and is composed of a large number of panels made of thin metal plates, and has an integral three-dimensional shell structure as a whole. Cab 203 is frame 2
No. 02 is mounted on the front end side of the frame 202 so that it can be tilted freely, and the rear end of the cab 203 is mounted on the frame 20.
It is supported by a mounting bracket 204 provided on the No. 2.

A bumper 205 is attached to the front end of the frame 202, and the front side 203A of the cab 203 is located slightly behind the bumper 205. A collision detection sensor 207 is attached to a portion of the cab 203 such as a floor panel 206 or an aggregate (not shown) of the floor panel 206 near the occupant.

[0009]

However, the cab 20
When the collision detection sensor 207 is attached to the floor panel 206 through some kind of bracket in Section 3, if the bracket is crushed, it becomes difficult to protect the collision detection sensor 207.

Of course, if a bracket is installed on the front side of the cab 203, the front side of the cab 203 will be located on the floor panel 2.
Since it is more easily crushed than 06, it becomes more and more difficult to protect the collision detection sensor 207 with a bracket. If the collision detection sensor cannot be protected until the end of the airbag system operation at the time of collision, safety cannot be ensured.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a mounting device for a collision detection sensor in a cab capable of sufficiently protecting the collision detection sensor. .

[0012]

SUMMARY OF THE INVENTION The present invention is directed to a front side plate portion extending in the vehicle left-right direction and a side surface side plate portion arranged in parallel with the front-rear direction of the vehicle and coupled to the front side plate portion and having a collision detection sensor mounted thereon. It is characterized by having and.

(Operation) In the present invention, since the collision detection sensor mounting device is strongly constituted by the front side plate and the side side plate, even if the cab crashes due to a front collision of the cab-over vehicle ( Even if it is crushed), the collision detection sensor mounting device moves following the deformation caused by the collision of the cab while keeping its original shape, and escapes in the vehicle rearward direction and the vehicle left-right direction. The force acting on the collision detection sensor mounting device is small, the original shape of the collision detection sensor mounting device is maintained, and the collision detection sensor mounting device is less likely to be crushed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5, an attachment device for a collision detection sensor in a cab according to an embodiment of the present invention will be described.

In FIGS. 4 and 5, reference numeral 1 is a cab-over vehicle, which has a frame 2 on which a cab 3 is mounted. Cab 3
Is tiltably attached to a bracket 2A on the front end side of the frame 2, and the rear end of the cab 3 is supported by a mounting bracket 4 provided on the frame 2.

A bumper 5 is attached to the front end of the frame 2. The front side 3A of the cab 3 slightly behind the bumper 5
Is located. The cab 3 includes a floor assembly portion 7, a front assembly portion 8, a roof assembly portion 9, left and right front side column members 10, 10, and left and right rear side column members 1.
1, 11 and the like, and is composed of a large number of panels made of metal thin plates as a material to form an integral three-dimensional shell structure.

In FIGS. 3 and 4, the front assembly portion 8 is a first upper reinforce member.
Second cross member 12 and front cross member
The horizontal frame member 13, the third horizontal frame member 14 formed of an ins member arranged rearward of the first horizontal frame member 12, the front lid 15, and the front member 16.

The first transverse member 12 is a bone member formed of a metal thin plate as a material and having a pentagonal cross section. Both ends of the first transverse member 12 are joined to the left and right front pillar members 10, 10 by spot welding. Here, in addition to spot welding, carbon dioxide arc welding, fastening means such as bolts and nuts, and the like can be used as the "coupling" mode. By such "coupling", the first transverse member 12 and the front side column members 10, 10 are integrated to form a rigid structure.

The second transverse member 13 is made of a thin metal plate and is a bone member having a substantially C-shaped cross section that opens toward the front. Both ends of the second transverse member 13 are joined to the left and right front pillar members 10, 10 by spot welding. Here, in addition to spot welding, carbon dioxide arc welding, fastening means such as bolts and nuts, and the like can be used as the "coupling" mode. By this "coupling", the second transverse member 13 and the front pillar members 10 and 10 are integrated to form a rigid structure.

The third transverse member 14 is made of a thin metal plate, and is a U-shaped bone member that opens upward. Both ends of the third transverse member 14 are connected to the left and right front side column members 10, 10 by spot welding. Here, in addition to spot welding, carbon dioxide arc welding, fastening means such as bolts and nuts, and the like can be used as the "coupling" mode. By such "coupling", the third transverse member 14 and the front-side columnar members 10, 10 are integrated to form a rigid structure.

The upper flange portion 12A of the first transverse member 12
The lower edge of the front window 18 is attached to the front window 18 via the weather strip 17. First transverse member 1
2 to the lower flange portion 12B of the upper edge 1 of the front member 16
6A is connected by spot welding. The lower edge 16B of the front member 16 is spot welded to the second transverse member 13
Is connected to the upper flange portion 13A.

The bottom surface portion 13B of the second transverse member 13 is joined to the floor panel 7A of the floor assembly portion 7 by spot welding. The front lid 15 and the front member 16 are connected via a bracket 19 by spot welding. Then, as shown in FIG. 1 and FIG. 3, the collision detection sensor mounting device 20 including a pedal bracket is provided with a first transverse member 12, a second transverse member 13, and a third transverse member 14. The two transverse members are bridged and connected. A portion M that forms the front side of the cab 3 is formed by the three horizontal members, that is, the first horizontal member 12, the second horizontal member 13, and the third horizontal member 14. The collision detection sensor mounting device 20 is located on the left side of FIG. 4, and is on the same side as the driver.

Here, as the "coupling" mode, there are spot welding, carbon dioxide arc welding, fastening means such as bolts and nuts, etc. By such "coupling", the attachment device for the collision detection sensor is attached to the three transverse members. The 20 are integrated to form a rigid structure. More specifically, as shown in FIGS. 1 and 2, the collision detection sensor mounting device 20 is arranged in parallel with the front-rear direction of the vehicle and is connected to the front-side plate portion 21 along the vehicle left-right direction. And a side surface side plate portion 22 which has a side surface side plate 22 and has a T-shaped cross section. The front side plate portion 21 includes an upper side plate portion 23 and a vertical plate portion 24 that is continuous with the upper side plate portion 23, and has a substantially L-shaped cross-sectional shape in a side view. The front side plate portion 21 is a thin metal plate, and the rear end of the upper side plate portion 23 is connected to the third transverse member 14 by spot welding.

The front end of the upper side plate portion 23 of the front side plate portion 21 is L
It is connected to the horizontal portion 25A of the brackets 25, 25 by spot welding. A weld nut (not shown) is provided on the side surface of the first transverse member 12, and a bolt (not shown) is screwed into the weld nut (not shown) via the hole 25C of the vertical portion 25B of the L-shaped bracket 25. As a result, the upper side plate portion 23 of the front side plate portion 21 becomes the first transverse member 1
2 are connected. An oblique flange 24A is formed at the lower end of the vertical plate portion 24, and the oblique flange 24A is joined to the inclined surface 13C of the second horizontal frame member 13 by spot welding. In this way, the front side plate portion 21 of the collision detection sensor mounting device 20 is attached to the portion M forming the front side of the cab 3.
Are combined.

The side surface side plate portion 22 is a thin metal plate having a substantially triangular shape, and flanges 22A, 22B and 22C are formed on the edges thereof. The flange 22A of the side surface side plate portion 22 is connected by spot welding to the upper side plate portion 23 of the front surface side plate portion 21, and the flange 22B of the side surface side plate portion 22 is connected by spot welding to the vertical plate portion 24 of the front surface side plate portion 21, The side surface side plate portion 22 is at a right angle to the front surface side plate portion 21. Here, the front side plate portion 21 and the side surface plate portion 2
In addition to spot welding, carbon dioxide arc welding, fastening means such as bolts and nuts, and the like can be used as the mode of "joining" in 2. By such "coupling", the front side plate portion 21 and the side surface side plate portion 22 are integrated to form a rigid structure. Since the collision detection sensor mounting device 20 is formed in a T shape by the front side plate portion 21 and the side surface side plate portion 22 that is perpendicular to the front side plate portion 21, it is difficult to be crushed by an external force.

The collision detection sensor 26 is attached to the side surface side plate portion 22 of the collision detection sensor mounting device 20 with a bolt (not shown). Here, since the side surface side plate portion 22 is arranged parallel to the vehicle front-rear direction, the collision detection sensor 26 functions accurately. The collision detection sensor 26 senses a deceleration in the vehicle front-rear direction that is greater than a predetermined deceleration. The collision detection sensor 26 operates the airbag system described in the conventional example.

A pedal such as a clutch pedal (not shown) is attached to the collision detection sensor mounting device 20. Therefore, in the present embodiment, the collision detection sensor 2 is provided on the front side of the cab 3 in the crushable area.
6 is arranged, and the collision detection sensor mounting device 20 is attached to the portion M forming the front side of the cab 3, but the deceleration (displacement) of the portion M forming the front side of the cab 3 detects collision. Collision detection sensor 2 via sensor mounting device 20
6 is transmitted. Even if the cab-over vehicle 1 collides forward and the portion M that constitutes the front side of the cab 3 crashes greatly (even if it is crushed) due to the collision, the collision detection sensor mounting device 20
Moves while following the deformation caused by the collision of the portion M constituting the front side of the cab 3 while keeping the original shape, and escapes in the vehicle rearward direction and the vehicle leftward and rightward direction. The force acting on the collision detection sensor mounting device 20 is small, the original shape of the collision detection sensor mounting device 20 is maintained, and the collision detection sensor mounting device 20 is maintained.
Is hard to collapse.

It has been confirmed in an actual vehicle test that the original shape of the collision detection sensor mounting device 20 is maintained. According to the configuration as described above, first, the collision detection sensor mounting device 20 on which the collision detection sensor 26 is mounted includes the front side plate portion 2
1 and the side surface side plate portion 22 are firmly configured, the collision detection sensor mounting device 20 is unlikely to be crushed, and the original shape of the collision detection sensor mounting device 20 can be maintained during a frontal collision of the cab-over vehicle 1. The collision detection sensor 26 mounted on the mounting device 20 can be protected up to the timing of the operation end at the time of collision, and the safety can be improved.

Second, since the collision detection sensor mounting device 20 is a pedal bracket, the collision detection sensor mounting device 20 functions as a supporting member for mounting the pedal and a supporting member for mounting the collision detecting sensor 26. Have. In the present embodiment, the pedal bracket is cited as an example of the collision detection sensor mounting device 20, but the invention is not limited to this. Further, it may be a member separate from the pedal bracket.

Further, in this embodiment, the collision detection sensor mounting device 20 includes the front side plate portion 21 and the side surface side plate portion 2.
2, the collision detection sensor mounting device 31 includes a front side plate portion 31A and a side surface side plate portion 3 perpendicular to the front side plate portion 31A as shown in FIG.
It is also possible to form an L-shaped cross section with 1B. In this case, the collision detection sensor 26 is attached to the side surface side plate portion 31B.

Further, in the present embodiment, the collision detection sensor mounting device 20 is composed of the front side plate portion 21 and the side surface side plate portion 22 and has a T-shaped cross section.
As shown in FIG. 5, the collision detection sensor mounting device 32 includes a front side plate portion 32A, a side surface side plate portion 32B perpendicular to the front side plate portion 32A, and a rear side plate portion 32 facing the front side plate portion 32A.
It is also possible to form a C-shaped cross section with C. In this case, the collision detection sensor 26 is attached to the side surface side plate portion 32B.

In the present embodiment, the collision detection sensor mounting device 20 is composed of the front side plate portion 21 and the side surface side plate portion 22 and has a T-shaped cross section.
As shown in FIG. 3, the collision detection sensor mounting device 33 includes a front side plate portion 33A, side surface side plate portions 33B and 33B whose one ends are connected to both sides of the front side plate portion 32A, and a front side plate portion 33A.
It is also possible to form a closed cross section having a quadrangular cross section with the rear side plate portion 33C that is opposed to the rear side plate portion 33B and is coupled to the other end of the side surface plate portions 33B and 33B. In this case, the collision detection sensor 26 is attached to one of the side surface side plate portions 32B. Note that the present invention is not limited to a closed cross section having a quadrangular cross section, and can be applied to closed cross sections other than a quadrangular cross section.

Further, in the embodiment of the present invention, the side surface side plate portion 22 is at a right angle to the front side surface plate portion 21 of the collision detection sensor mounting device 20,
The side surface side plate portion 22 can be inclined with respect to the front surface side plate portion 21. At least the side surface side plate portion 22 may be disposed in parallel with the vehicle front-rear direction and coupled to the front side plate portion 21.
Further, in the present embodiment, the collision detection sensor mounting device 20 is mounted on the portion M that constitutes the front side of the cab including the first, second, and third transverse members 12, 13, 14. However, as shown in FIG. 9 and FIG.
The collision detection sensor mounting device 41 may be mounted on the front member 16. That is, the collision detection sensor mounting device 41 has a front side plate portion 42 made of a metal thin plate along the left-right direction and a side surface side plate portion 43 made of a metal thin plate and perpendicular to the front side plate portion 42. , T-shaped in cross section. The front side plate portion 42 is joined to the front member 16 by spot welding. In this case, the strength is increased by forming beads or the like on the front member 16.

[0034]

According to the present invention, the collision detection sensor mounting device is made up of a front side plate portion and a side surface plate portion,
Even if the cab-over vehicle collides forward, it moves following the deformation caused by the cab collision while maintaining its original shape, and can escape in the vehicle rearward direction and the vehicle left-right direction, making it difficult to collapse. Therefore, the collision detection sensor attached to the collision detection sensor mounting device can be protected until the end of the collision, and the safety can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a collision detection sensor mounting device in a cab according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a collision detection sensor mounting device taken along line XX in FIG.

FIG. 3 is a sectional view showing the cab.

FIG. 4 is a perspective view showing the cab.

FIG. 5 is a side view showing the cab.

FIG. 6 is a cross-sectional view showing a first modification of the collision detection sensor mounting device.

FIG. 7 is a cross-sectional view showing a second modification of the collision detection sensor mounting device.

FIG. 8 is a cross-sectional view showing a third modification of the collision detection sensor mounting device.

FIG. 9 is a side view illustrating a state in which the collision detection sensor mounting device is mounted on the front member.

FIG. 10 is a sectional view taken along the line YY of FIG. 9;

FIG. 11 is a side view showing a state in which a collision detection sensor is mounted on a conventional passenger car.

FIG. 12 is a side view of the cab-over vehicle when the collision detection sensor is mounted on the floor panel.

[Explanation of symbols]

 3 Cab 20 Collision Detection Sensor Mounting Device 21 Front Side Plate 22 Side Side Plate 26 Collision Detection Sensor

Claims (1)

[Claims] 1. A front side plate portion extending in the vehicle left-right direction, and a side surface plate portion arranged in parallel with the front-rear direction of the vehicle and coupled to the front side plate portion and having a collision detection sensor mounted thereon. A mounting device for a collision detection sensor in a cab.