JPH106892A - Slip-in preventing device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damage of the two end parts of a protector through interference with a ground and a protrusion object, in a slip-in preventing device for a vehicle having a protector extending in the direction of the width of a car and arranged on the lower side of the front of a frame or the lower side of the rear part thereof. SOLUTION: The two end parts 4b of a protector 4 are upward bendably formed. The two end parts 4b axially couples together a plurality of a plurality of blocks 5 which are upward bendably intercoupled. Springs 10 are provided to energize the two end parts 4b of the protector 4 to a straight initial state. A flexible cover with which the protector 4 is covered is provided. A roof-form slope is formed on the cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an undercarriage prevention device for a vehicle.

[0002]

2. Description of the Related Art In a high-floor vehicle such as a truck, in order to prevent a passenger car from penetrating under the frame in the event of a collision, the lower front portion or the lower rear portion of the frame is guarded by a protector extending in the vehicle width direction. (Japanese Utility Model Laid-Open No. 7-4209 and Japanese Utility Model Laid-Open No. 6-8114).

[0003]

However, since the protector is set at a low height above the ground due to its function of preventing digging in, when the vehicle body sways left and right while traveling on uneven terrain, the protector and the protrusions on the ground may be disturbed. Objects (such as rocks) and the outer edges of the protector wheels were more likely to interfere with each other, possibly resulting in damage depending on the degree of impact.

An object of the present invention is to provide an effective countermeasure for solving such a problem.

[0005]

According to a first aspect of the present invention, there is provided an undercut prevention device for a vehicle having a protector extending in a vehicle width direction at a lower front portion or a lower rear portion of a frame, wherein both end portions of the protector can be bent upward. Formed.

In the second invention, a plurality of blocks are connected in the axial direction and connected to bend upwards, respectively, as both end portions of the protector in the first invention.

According to a third aspect, in the first or second aspect, a spring means for urging both end portions of the protector in an initial straight state in the axial direction is provided.

According to a fourth aspect, in the first or second aspect, a flexible cover for covering the protector is provided.

In a fifth aspect based on the fourth aspect, the cover is formed with a roof-like inclined surface extending over the upper surface of the protector.

[0010]

According to the first aspect of the present invention, even if both ends of the protector interfere with the ground or its protrusions due to rolling of the vehicle body, both ends are bent upward, so that damage to the protector can be prevented.

According to the second aspect, since each block is individually bent upward, the responsiveness of deformation accompanying interference with the ground and its projections is improved. Increasing the number of blocks can increase the length of the bendable ends of the protector.

According to the third aspect, it is possible to prevent the both ends of the protector from rattling.

According to the fourth aspect, it is possible to prevent mud or snow from adhering to both ends of the protector and making it difficult to bend upward.

According to the fifth aspect, since the inclined surface of the cover slides on mud and snow, it is possible to prevent these from accumulating above the protector.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawing shows an example of application to a front underrun protector that guards a lower front portion of a frame in a truck. A bracket 3 is connected to a side rail 2 of the frame at a base end thereof. The protector 4 is attached to these tips. The protector 4 includes a central portion 4 a extending between the brackets 3 and both end portions 4 b protruding outside the side rails 2. Each end portion 4 b is formed by a plurality of blocks 5.

The blocks 5 are used in groups of three. Ribs 6a and 7a are formed on the upper surfaces of the first block 5a and the central portion 4a of the protector 4, respectively, and pins 8a passing through these shaft holes are formed. The first block 5 a is connected to the central portion 4 a of the protector 4 via the first block 5 a so as to be bent upward. Similarly, ribs 6a, 6b, and 6c are formed in the first block 5a and the second block 5b, and the second block 5b and the third block 5c, and are bendable via the pins 8b and 8c, respectively. Be linked.

In these hinge portions, in order to secure rigidity at the time of collision, a block 5a is engaged with a central portion 4a of the protector 4 by a convex portion 11, and the blocks 5a to 5c are engaged by the concave portion 12 and the convex portion 11. Are combined. Stays 9a and 9b are formed in the central portion 4a of the protector 4 and the third block 5a, respectively. A spring 10 for urging the blocks 5a to 5c to an initial straight state in the axial direction of the protector 4 is provided by the stays 9a and 9b. Interposed in between. The concave portions 12 and the convex portions 11 of the blocks 5a to 5c are designed so as not to hinder the bending of the blocks 5a to 5c due to the positional relationship with the pins 8a to 8c.

With such a configuration, when the vehicle is running on uneven ground or the like, both ends 4b of the protector 4 alternately approach the ground due to rolling of the vehicle body. When both end portions 4b of the protector 4 interfere with the ground and its protrusions (rocks, etc.), the blocks 5a to 5c are connected to the pins 8a, 8b, 8c.
Is bent upward as shown in FIG. Projection M
, The blocks 5a to 5c are returned to the straight initial state by the spring 10.

For this reason, even if the both end portions 5b of the protector 4 interfere with the ground or its protrusions, the blocks 5a to 5c bend upward, so that the damage of the protector 4 can be properly prevented. Due to the urging force of the spring 10, it is possible to prevent the end portions 4b of the protector 4 from rattling due to vibration during traveling or the like. Note that the both end portions 4b of the protector 4 do not connect the plurality of blocks 5a to 5c, but
It may be formed by one block.

If mud or the like adheres to the hinge portions at both end portions 4b of the protector 4, the smooth bending of the blocks 5a to 5c may be impaired. Therefore, it is preferable to provide a cover 13 for covering the outer surface of the protector 4 as shown in FIGS.
The cover 13 is made of a flexible material such as rubber, and has a roof-shaped inclined surface 14 that extends over the upper surface of the protector 4. In this case, the slope 14 makes it easy to slide down snow and mud, so that they can be prevented from accumulating on the upper side of the protector 4. Reference numeral 15 denotes a holding portion that locks the protector 4 inside the cover 13.

FIGS. 9 to 11 show another embodiment, in which a die-cast or cast molded product is used as the blocks 5a to 5c. In the first block 5a, a guide 16a that curves in the bending direction into an arc having a radius R is formed, and in the central portion 4a of the protector 4, a curved groove 18 that receives the guide 16a is formed, through which the first block 5a is connected to the protector. 4 is connected to the central portion 4a so as to be bent upward.

First block 5a and second block 5b
The guides 16b and 16c and the curved grooves 17 are also interposed between the second block 5b and the third block 5.
a and 17b are formed, and they are connected to each other via these members so as to be freely bent. Although not shown, each block 5a-5b
The spring means is provided for urging the protector 4 to an initial state straight in the axial direction of the protector 4.

According to this, each block smoothly bends upward through the guide which rotates the curved groove by the radius R with the interference with the projection M. 11 is block 5a
In the connecting portions of Nos. To 5c, the protrusions engage with each other to increase rigidity in the front-rear direction.

[0024]

According to the first aspect of the present invention, in the undercut prevention device for a vehicle having a protector extending in the vehicle width direction at the lower front portion or the lower rear portion of the frame, both end portions of the protector are formed to be freely bent upward. Therefore, even if both ends of the protector interfere with the ground or its protrusions due to the rolling of the vehicle body, both ends are bent upward, so that damage to the protector can be prevented.

According to the second aspect of the present invention, since the plurality of blocks are connected to each other in the axial direction so as to be bent upward as both end portions of the protector in the first aspect, each block is individually bent upward. Therefore, the responsiveness of deformation due to interference with the ground and its projections is improved. Increasing the number of blocks can increase the length of the bendable ends of the protector.

According to the third invention, in the first invention or the second invention, since the spring means for urging both end portions in the initial state straight in the axial direction of the protector is provided, both end portions of the protector are provided. It is possible to prevent rattling.

According to the fourth invention, in the first invention or the second invention, since a flexible cover for covering the protector is provided, mud, snow, etc. adhere to both ends of the protector and move upward. Can be prevented from becoming difficult.

According to the fifth aspect, in the fourth aspect, since the cover has a roof-like inclined surface extending over the upper surface of the protector, mud and snow are deposited on the upper side of the protector to increase the weight. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a protector as viewed from the front, showing an embodiment of the present invention.

FIG. 2 is a partial plan view of the protector.

FIG. 3 is a sectional view of the protector viewed from the same right side.

FIG. 4 is an exploded perspective view showing both end portions of the protector.

FIG. 5 is a perspective view of the same block.

FIG. 6 is an explanatory diagram of the same operation.

FIG. 7 is a partial perspective view of a protector representing another embodiment.

FIG. 8 is a sectional view of the same.

FIG. 9 is a partial cross-sectional view of a protector representing another embodiment.

FIG. 10 is a partially exploded perspective view of the same.

FIG. 11 is an explanatory diagram of the same operation.

[Explanation of symbols]

 2 Side rail of frame 3 Bracket 4 Protector 4a Central part of protector 4b Both end parts of protector 5, 5a-5c Block 6a-6c, 7 Rib 8a-8c Pin 10 Spring 11 Convex part 12 Concave part 13 Cover 14 Inclined surface 16a- 16c Guide 17a, 17b, 18 Curved groove

Claims (5)

[Claims] An undercut prevention device for a vehicle having a protector extending in a vehicle width direction at a lower front portion or a lower rear portion of a frame, wherein both end portions of the protector are formed to be bent upward. Undercut prevention device. 2. The undercut prevention device according to claim 1, wherein a plurality of blocks are connected in the axial direction so as to be freely bent upward as both end portions of the protector. 3. The undercut prevention device according to claim 1, further comprising spring means for urging both end portions of the protector to a straight initial state. 4. The undercut prevention device according to claim 1, further comprising a flexible cover for covering the protector. 5. The undercut prevention device according to claim 4, wherein the cover has a roof-like inclined surface extending over the upper surface of the protector.