JPH1071903A - Vehicle safety device against collision - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device against collision formed to be simple and compact in structure, wherein safety is improved by preventing the damaging of a lower portion of a driver at the time of vehicle collision. SOLUTION: A clutch bracket 2 and a brake bracket 3 are connected to a main bracket 1 via a support pin 45, and then these bracket are connected to a clutch master bag 6 and a brake master bag 7 via a clutch master cylinder 8 and a brake master cylinder 9. A clutch pedal support bracket 4 and a brake pedal support bracket 5 each having a collision part 10 and an inclined surface 11 close to a front panel 15 are connected to the front surface sides of the clutch master bag and the brake master bag 7. At the time of vehicle collision, the collision part is brought into contact with the front panel, moment is produced around the pin connecting point (a) of the main bracket, a clutch device and a brake device are rotated and thus interference with a knee is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to protection of the vicinity of a driver's knee at the time of collision of a vehicle, particularly a cab-over type truck.
The present invention relates to a vehicle collision safety device that can be reduced in weight.

[0002]

2. Description of the Related Art FIGS. 7 to 10 show an outline of arrangement around a clutch pedal, a brake pedal and a steering shaft in a conventional cab-over type truck. A front panel 15 is fixed to a front frame 13 disposed at the center of the front of the cab and a front mounting rail 14 disposed at the lower front of the cab. A clutch support 16 and a brake support 17 are also fixed thereto. ing.

[0003] Clutch support 16, brake support 17
Are connected to a clutch master back 18 and a brake master back 19, respectively.
Clutch pedal support bracket 22 for supporting brake pedal 21, brake pedal support bracket 2
3 are each fixed there.

On the other hand, a clutch master cylinder 24 and a brake master cylinder 25 are connected behind the clutch master back 18 and the brake master back 19, respectively.

Reference numeral 26 denotes an instrument panel (indicated by a two-dot chain line) which reinforces the instrument panel.
(Shown by a two-dot chain line) and the front frame 13, and a steering support bracket 28 is connected to the rear end of the reinforce 27. The steering support bracket 28
Is fixed at its lower end to a floor panel 29, holds a steering shaft 30 inside it, and covers its periphery with a steering cowl 31.

When the driver is in a normal driving posture in which the sole of the foot is in close contact with the floor panel 29, the thigh 3
Reference numerals 2 and 32 are located at positions indicated by two-dot chain lines, and both knees 33 and 33 are at positions substantially opposed to the clutch master cylinder 24 and the brake master cylinder 25 with an appropriate space therebetween. In a cab that is properly assembled, the distal ends of the clutch pedal support bracket 22 and the brake pedal support bracket 23 are disposed at an appropriate distance from the front panel 15, as shown in FIG.

[0007]

As described above, a regular interval is formed between the front panel 15 and the clutch pedal support bracket 22 and the brake pedal support bracket 23, and FIG. 9 and FIG. As shown, when the vehicle collides from the front, the front panel 15 is deformed from the position indicated by the two-dot chain line to the position indicated by the solid line, and the front panel 15 hits the clutch pedal support bracket 22 and the brake pedal support bracket 23 and presses them. . Further, the driver also moves forward due to the inertial force at the time of the collision, and as a result, the thigh 32 moves in the direction of the arrow in FIG. 10, and the rear ends of the clutch master cylinder 24 and the brake master cylinder 25 hit the knee 33. there were.

In order to solve the above problems, various types of collision safety devices have been disclosed. For example, Shokai 6
JP-A-3-58071 and JP-A-7-25329 are mentioned. "Supporting device for steering column in cab-over type vehicle" disclosed in Japanese Utility Model Laid-Open No. 63-58071.
Arranges a reinforcement (6) having a closed cross section having an inclined surface close to the rear end of the brake device (3), and moves the brake device (3) along the inclined surface of the reinforcement (6) at the time of collision. To prevent the knee and the like from interfering with the brake device (3). Japanese Unexamined Patent Publication No. 7-25329 discloses a "vehicle booster mounting structure" in which the lower end of a steering column (8) is swingable with a joint (23) as a fulcrum. This prevents the steering column (8) from hitting the knee or the like due to the column (8) swinging forward.

Although all of the above-mentioned known techniques are effective in protecting the knee in the event of a collision, any of these methods does not cause a lateral displacement between the clutch device, the brake device, and the like and the knee in the event of a collision. Depending on the distance between the device and the knee, the two may interfere or collide, and the knee cannot be completely protected. In addition, both examples have a rather complicated structure, which results in high cost.

The present invention has been made in view of the above circumstances, and is intended to prevent a driver's knee from colliding with both master cylinders in the event of a collision, and has a simple, compact, and inexpensive structure. It is an object of the present invention to provide a collision safety device for a vehicle that can be implemented at a high speed and that can be easily assembled.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a clutch master back and a brake master back which are juxtaposed with each other, and a clutch pedal support bracket which is attached before and after each of them. A clutch master cylinder, a brake pedal support bracket, a brake master cylinder, a front panel fixed to a front frame and a front mounting rail arranged in the center of the front of the vehicle and below the vehicle in the vehicle width direction; A driver's knee rotation at the time of a collision of a cab of a vehicle including each element of a steering support bracket which is connected to a rear end side of a reinforcement for reinforcingly supporting an instrument panel to be connected and which is connected to a floor panel to hold a steering cowl. A safety device for protecting the vehicle, wherein a main bracket is disposed between the clutch master back and the brake master back, a front upper end thereof is fixed to the front frame, and a front lower end thereof is respectively provided on a front mounting rail. While being fixed, it is extended between the clutch master cylinder and the brake master cylinder, and one end of a clutch bracket and a brake bracket is pin-connected to a rear end of the main bracket. The other end is connected to the clutch master cylinder and the brake master cylinder, and further includes a clutch pedal support bracket attached to the clutch master back and a brake pedal support bracket attached to the brake master back. Comprise each collision part constitutes a collision safety device for a vehicle and extends in the vicinity of the front panel.

Further, a knock pin for fixing the main bracket to the clutch bracket and the brake bracket is provided at a pin connecting portion of the clutch bracket and the brake bracket which is connected to the main bracket by a pin. In addition, it is formed of a material having a strength enough to withstand an acting force at the time of a brake operation and having a strength set so as to be cut off by an excessive input at the time of a collision.

Further, the clutch bracket and the clutch master cylinder and the brake bracket and the brake master cylinder are formed integrally, respectively, and the collision portions of the clutch pedal support bracket and the brake pedal support bracket are inclined rearward. The present invention is characterized by a collision safety device for a vehicle in which inclined surfaces are formed so as to be connected, and a V-shape is formed by both inclined surfaces.

The clutch master back and the brake master back are supported by a main bracket, a clutch bracket, a brake bracket, and the like, and the clutch bracket and the brake bracket are fixed to the main bracket by knock pins. And the brake master back are stably held. However, at the time of a vehicle collision, the front panel retreats and the front panel hits and presses the collision portion of the clutch pedal support bracket or the brake pedal support bracket, and the thigh of the driver moves forward.

The clutch bracket and the brake bracket are pin-coupled to the main bracket and are fixed with the knock pins as described above. Will be possible. On the other hand, the pin connection point and the collision portion of the clutch pedal support bracket and the brake pedal support bracket have an appropriate distance in the front-rear and left-right directions, and a moment is generated around the pin connection point by a collision force applied to the collision portion. This moment pushes the clutch master back and the brake master back to rotate, and as a result, the clutch master back and the brake master back and the clutch master cylinder and the brake master cylinder connected to the clutch master back and the brake master Rotate inward.
Therefore, the driver's knee is separated from the rear ends of the clutch master cylinder and the brake master cylinder, and comes to a position where no interference occurs. Therefore, the knee does not hit the parts around it, thus ensuring safety.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle collision safety device according to an embodiment of the present invention. As shown in FIG. 1, the front panel 15 is attached to the front frame 13 and the front mounting rail 14, and an instrument panel 26 and a reinforcement 27 for reinforcing the same are connected to the front frame 13. Further, a steering support bracket 28 is connected to a rear end of the reinforcement 27, and a steering shaft 30 and a steering cowl 31 are held. The steering support bracket 28 is connected to the floor panel 29. The driver's thigh 3
2 is positioned with the steering cowl 31 and the like in between.

In the vehicle collision safety device according to the present invention, the clutch master back 6 and the brake master back 7 are connected to the front frame 13 and the front mount rail by the conventional clutch support 16 and brake support 17 shown in FIGS. 14 is supported by the main bracket 1 via the clutch bracket 2 and the brake bracket 3 that support the clutch master cylinder 8 and the brake master cylinder 9, respectively.

That is, as shown in FIGS. 1 to 3, the clutch master cylinder 8 and the brake master cylinder 9 have their flange portions 34 and 35 applied to the rear surfaces of the clutch master back 6 and the brake master back 7, and are connected by studs 36. Fixed. In addition, the clutch master back 6 and the brake master back 7 are connected to the base ends of the clutch pedal support bracket 4 and the brake pedal support bracket 5 on the front surfaces thereof. A clutch pedal 20 and a brake pedal 21 are rotatably supported by pins on the clutch pedal support bracket 4 and the brake pedal support bracket 5, respectively.
Connected to the side.

As shown in FIGS. 1 to 3, the main bracket 1 has an upper connecting portion 37 connected to the front frame 13, a lower connecting portion 38 connected to the front mount rail 14, and a rearward portion in the drawing. And a holding portion 40 formed at the extending end of the rib-shaped portion 39.
Are integrally formed. The main bracket 1 is disposed in a space between the clutch master back 6 and the brake master back 7 with a rib 39 interposed therebetween.

The clutch bracket 2 and the brake bracket 3 are composed of an arm block-like member having upper and lower surfaces integrally connected via ribs or the like.
1, 42 are formed, and holding portions 43, 44 surrounded by upper and lower plates are formed on the other end side. The brake bracket 3 is held by the holding portion 40 of the main bracket 1, and the clutch bracket 2 is held between the upper and lower surfaces of the brake bracket 3. Both are held by the holding portion 40 of the main bracket 1 by the support pins 45 (FIGS. 2 and 3) and are pivotally supported.

Projecting portions 46 and 47 are formed vertically on the cylinder portions of the clutch master cylinder 8 and the brake master cylinder 9. The projections 46 and 47 are for connecting the clutch bracket 2 and the brake bracket 3 with the clutch master cylinder 8 and the brake master cylinder 9. Specifically, as shown in FIG. 1 and the like, the holding portions 43 and 44 of the clutch bracket 2 and the brake bracket 3 hold the protruding portions 46 and 47, and are connected by fixing them with bolts or the like (not shown). . Further, oil supply and drainage to the clutch master cylinder 8 and the brake master cylinder 9 are performed by clutch pipes and brake pipes 48 and 49 connected to each other.

To connect the main bracket 1 to the clutch bracket 2 and the brake bracket 3 to which the clutch master cylinder 8 and the brake master cylinder 9 are connected, as shown in FIGS. The brackets 2 are overlapped and these are inserted into the holding portions 40 of the main bracket 1, and the support pins 4
5 is inserted and fixed. When these three members are connected, knock pin 12 is driven in to fix main bracket 1, clutch bracket 2 and brake bracket 3. During normal operation of the clutch and the brake, the clutch bracket 2 in which the parts are assembled is in contact with the brake bracket 3 (A), and the brake bracket 3 is in contact with the main bracket 1 (A). ) Are set so as to be in contact with each other, so that the input by the normal pedal operation is received by all the members, and is set so as not to be received only by the knock pin 12, and the strength is sufficient to withstand the external force which normally acts. The knock pin 12
Of a strength that is cut off by an external force acting on the As described above, the clutch bracket 2 and the brake bracket 3 are supported rotatably about the support pin 45 in a state where the knock pin 12 is not present (or a state where the knock pin 12 is cut off). As described above, the clutch master cylinder 8 and the brake master cylinder 9 are fixed to the clutch master back 6 and the brake master back 7, and the clutch bracket 2 and the brake bracket 3 are fixed to the clutch master cylinder 8 and the brake master cylinder 9. Therefore, when the clutch bracket 2 and the brake bracket 3 rotate around the support pin 45, the clutch master back 6 and the brake master back 7
Also rotates.

Each of the clutch pedal support bracket 4 and the brake pedal support bracket 5 has a substantially U-shaped cross section, and a front end portion corresponding to the bottom surface of the U-shaped cross section is disposed so as to protrude toward the front panel 15.
A collision portion 10 that protrudes most toward the front panel 15 is formed at the front end portion, and an inclined surface 11 connected to the collision portion 10 is formed. The collision portion 10 is formed at a position farthest from the center where the main bracket 1 is disposed, and is normally disposed at a position appropriately spaced from the front panel 15 as shown in the drawing. Further, the inclined surface 11 is arranged near the center, and is formed to be inclined downward from the collision portion 10.

Next, the engagement state of each part at the time of a collision in the vehicle safety system according to the present invention will be described. First, FIGS. 1 and 2 show the arrangement of each component in a normal assembly state. As described above, the clutch bracket 2 and the brake bracket 3
The clutch master back 6 and the brake master back 7 are arranged side by side in the front-rear direction. The knee 33 at the tip of the driver's thigh 32 and the rear ends of the clutch master cylinder 8 and the brake master cylinder 9 are positioned at appropriate intervals. Further, as described above, the collision portion 10 between the clutch pedal support bracket 4 and the brake pedal support bracket 5 is disposed at a position appropriately spaced from the front panel 15.

FIG. 5 shows a state at the time of collision, in which the front panel 15 retreats from the position shown by the two-dot chain line, and the front frame 13 and the front mounting rail 14 are deformed accordingly. In this case, the main bracket 1 is relatively rigid, has a small amount of retreat as compared with the front panel 15 and the like, and is substantially stopped at the original position. For this reason, the collision portion 10 of the clutch pedal support bracket 4 and the brake pedal support bracket 5 that are most protruding as shown in FIG. These contact points are referred to as points b and c for convenience of explanation, and the front-rear collision forces acting on these points are referred to as Fb and Fc. On the other hand, a point at which the main bracket 1 is connected to the clutch bracket 2 and the brake bracket 3 is defined as a point a. As described above, the knock pin 12 (shown in FIG. 2 and the like) is cut off during a collision.

As shown in FIG. 5, there are distances Lb and Lc along the left-right direction between point a, point b and point c, and the inputs Fb and Fc at the time of collision are clutches centering on point a. The pedal support bracket 4, the brake pedal support bracket 5, the clutch master back 6, the brake master back 7, the clutch master cylinder 8, the brake master cylinder 9, etc. are integrally formed as Fb ₁ , Fc _1.
In the direction. By these moments, the clutch master back 6 and the brake master back 7 are rotated in a direction in which the clutch master cylinder 8 and the brake master cylinder 9 approach the main bracket 1 side. On the other hand, as shown in the figure, the thigh 32 also advances from the normal position indicated by the two-dot chain line to the position indicated by the solid line. In the prior art, the knee 33 of the thigh portion 32 that has moved forward hits the rear ends of the clutch master cylinder 8 and the brake master cylinder 9, but the rear ends of the clutch master cylinder 8 and the brake master cylinder 9 turn inward as described above. Since they move, the interference between them and the knee 33 is avoided. Therefore, the knee 33 is protected and the safety of the driver is ensured.

FIG. 6 shows another embodiment of the collision safety device of the present invention. In the above-described example, the clutch bracket 2 and the brake bracket 3 and the clutch master cylinder 8 and the brake master cylinder 9 are formed separately, but in the present example, they are combined as an integral structure. That is, the clutch bracket assembly 2a
And the brake bracket assembly 3a includes the clutch bracket 2 and the brake bracket 3, the clutch master cylinder 8 and the brake master cylinder 9
And a structure in which Of course, the clutch bracket assembly 2a and the brake bracket assembly 3a are formed with pin holes 41 and 42 that are connected to the main bracket 1 (FIG. 1), and are connected to the main bracket 1 side by the knock pins 12. Further, flange portions 34 and 35 connected to the clutch master back 6 and the brake master back 7 are formed.

In the case of the clutch bracket assembly 2a and the brake bracket assembly 3a having the above structures, the clutch bracket 2
Further, a step of connecting the brake master cylinder 8 and the brake master cylinder 9 to the clutch master cylinder 8 and the brake master cylinder 9 and then connecting them to the clutch master back 6 and the brake master back 7 becomes unnecessary, so that the clutch bracket assembly 2a and the brake bracket assembly 3a are not required. What is necessary is just to connect and fix directly to the clutch master back 6 and the brake master back 7, and the assembling work time is reduced, and the working efficiency can be improved. In addition, the cost is reduced due to the integrated structure, and there is an advantage that the weight can be reduced. The clutch bracket assembly 2a and the brake bracket assembly 3a are integrally formed by, for example, aluminum die casting, and can be easily manufactured.

In the above description, the collision portion 10 and the inclined surface 11 are formed at the distal end portions of the clutch pedal support bracket 4 and the brake pedal support bracket 5. In addition to making a point contact with the front panel 15, the front panel 15 functions as a wedge surface that facilitates sliding on the front panel 15 side along the inclined surface 11. However, in the case of the present invention, it is only necessary that the front panel 15 and the clutch pedal support bracket 4 and the brake pedal support bracket 5 side substantially come into point contact with each other at the time of collision. It does not do.

[0030]

【The invention's effect】

1) According to the vehicle collision safety device according to the first aspect of the present invention, at the time of a collision, the interference between the clutch device or the brake device disposed near the thigh of the driver and the knee of the thigh is ensured. And the safety of the driver is ensured. Further, the collision safety device for a vehicle according to the present invention has a relatively simple structure in which a clutch master back or a brake master back is connected via a clutch bracket and a brake bracket to a main bracket provided between them, and is compact. And can be implemented inexpensively. 2) According to the collision safety device for a vehicle according to the second aspect of the present invention, the main bracket, the clutch bracket and the brake bracket are normally securely connected and fixed by the stopper structure and the knock pin at normal times. No discomfort is caused by the brake operation. 3) According to the collision safety device for a vehicle according to the third aspect of the present invention, the clutch bracket and the brake bracket, the clutch master cylinder and the brake master cylinder are formed in an integrated structure, so that the assembling becomes easy and the working efficiency is improved. And cost reduction and weight reduction can be achieved. 4) According to the collision safety device for a vehicle according to the fourth aspect of the present invention, the clutch pedal support bracket and the brake pedal support bracket are formed with inclined surfaces at the distal ends, and are engaged with the front panel during a collision. Therefore, the clutch master back and the brake master back are smoothly rotated at the time of collision in order to perform a wedge function.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic structure around a steering wheel, a clutch, and a brake of a cab of a vehicle provided with a vehicle collision safety device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view in which main components of the present invention in FIG. 1 are divided and displayed.

FIG. 4 is a perspective view showing an assembled engagement state of main components of the present invention.

5 is a cross-sectional view taken along the line AA of FIG. 1, showing a state of the vehicle collision safety device of the present invention shown in FIG. 1 at the time of a collision.

FIG. 6 is a divided perspective view showing another embodiment of the collision safety device for a vehicle of the present invention in which a clutch bracket and a brake bracket, a clutch master cylinder and a brake master cylinder are integrally formed.

FIG. 7 is a side view showing a schematic structure around a steering, a clutch, and a brake of a cab of a conventional vehicle.

FIG. 8 is a perspective view in which a conventional clutch pedal (brake pedal), clutch master back (brake master back), and columns for supporting the same are separately shown.

FIG. 9 is a side view showing the state of the conventional vehicle at the time of the collision shown in FIG. 7;

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main bracket 2 Clutch bracket 2a Clutch bracket assembly 3 Brake bracket 3a Brake bracket assembly 4 Clutch pedal support bracket 5 Brake pedal support bracket 6 Clutch master back 7 Brake master back 8 Clutch master cylinder 9 Brake master cylinder 10 Collision part 11 Slope 12 Dowel pin 13 Front frame 14 Front mount rail 15 Front panel 20 Clutch pedal 21 Brake pedal 26 Instrument panel 27 Reinforce 28 Steering support bracket 29 Floor panel 30 Steering shaft 31 Steering cowl 32 Thigh 33 Knee 34 Flange 35 Flange 36 Stud 37 upper row Connecting part 38 Lower connecting part 39 Rib-shaped part 40 Holding part 41 Pin hole 42 Pin hole 43 Holding part 44 Holding part 45 Support pin 46 Projecting part 47 Projecting part 48 Clutch pipe 49 Brake pipe

Claims (4)

[Claims] 1. A clutch master back and a brake master back which are arranged in parallel with each other, a clutch pedal support bracket, a clutch master cylinder and a brake pedal support bracket, and a brake master cylinder which are respectively mounted before and after the clutch master back and the brake master cylinder. A front panel fixed to a front frame and a front mounting rail arranged in a vehicle width direction at a center and a lower side of a front surface, and connected to a rear end side of a reinforcement for reinforcingly supporting an instrument panel connected to the front frame. A safety device for protecting a driver's knee around a collision of a cab of a vehicle, the safety device including a steering support bracket for holding a steering cowl connected to a floor panel. A main bracket is disposed between the clutch master cylinder and the brake master back. The front upper end is fixed to the front frame, and the front lower end is fixed to a front mount rail. And one end of a clutch bracket and a brake bracket are pin-connected to the rear end of the main bracket, and the other end of the clutch bracket and the brake bracket are connected to the clutch master cylinder and the brake master cylinder. The clutch pedal support bracket attached to the clutch master back and the brake pedal support bracket attached to the brake master back are each provided with a collision part, and extend near the front panel. Collision safety device for a vehicle, characterized in that it is. 2. A knock pin for fixing the main bracket to the clutch bracket and the brake bracket is provided at a pin connecting portion of the clutch bracket and the brake bracket which is connected to the main bracket by a pin. And have sufficient strength to withstand the acting force during brake operation,
2. A structure having a strength set so as to cause breakage due to excessive input at the time of a collision.
The collision safety device for a vehicle according to claim 1. 3. The collision safety device for a vehicle according to claim 1, wherein the clutch bracket and the clutch master cylinder and the brake bracket and the brake master cylinder are integrally formed. 4. The clutch pedal support bracket and the brake pedal support bracket each have a collision surface formed with an inclined surface that is inclined rearward so as to form a V-shape with both inclined surfaces. The collision safety device for a vehicle according to claim 1, wherein: