Rear plunging arrester of vehicle

Abstract

To provide a rear plunging arrester of a vehicle which can secure reliance of fixation of a diving prevention bumper to a vehicle body frame even when setting a position of the diving prevention bumper to a low position.SOLUTION: A rear plunging arrester of a vehicle comprises a diving prevention bumper, and a connection member which is provided between the diving prevention bumper and a vehicle body frame and connects the diving prevention bumper to the vehicle body frame. The connection member comprises a base which is connected to a front face of the diving prevention bumper and lateral faces of the vehicle body frame, and an abutment member which extends from the base so as to oppose an underside of the vehicle body frame and abuts to the underside of the vehicle body frame when the base rotates.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a rear intrusion prevention device for a vehicle. [Background technology]

[0002] In large vehicles such as trucks and dump trucks, bumpers to prevent small vehicles such as passenger cars from sliding into the space below when colliding with them (hereinafter referred to as "anti-underrun bumpers") are provided at the rear or side of the vehicle. Rear incursion prevention devices that include anti-underrun bumpers are generally called underrun protectors.

[0003] The underrun protector is described in, for example, Patent Document 1. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-205449 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, it is preferable that the height of the anti-underpassing bumper is provided at a low position that can sufficiently prevent underpassing.

[0006] On the other hand, the underrunning prevention bumper is fixed to the vehicle body frame via a bracket, so in order to lower the position of the underrunning prevention bumper, it is necessary to extend the bracket downward.

[0007] However, in the past, sufficient consideration had not been given to the strength of such a case.

[0008] The present disclosure has been made in consideration of the above points, and provides a rear intrusion prevention device for a vehicle that can ensure reliable fixation of the undercarriage prevention bumper to the vehicle frame even when the position of the undercarriage prevention bumper is set at a low position. [Means for solving the problem]

[0009] One aspect of the vehicle rear intrusion prevention device of the present disclosure is to A bumper to prevent vehicles from crawling under, a connecting member provided between the anti-underpassing bumper and a vehicle body frame, the connecting member connecting the anti-underpassing bumper to the vehicle body frame; Equipped with The connecting member is a base connected to a front surface of the anti-underrunning bumper and a side surface of the vehicle body frame; a contact member that extends from the base to face a lower surface of the body frame and comes into contact with the lower surface of the body frame when the base rotates; Equipped with Rear intrusion prevention device. Effect of the Invention

[0010] According to the present disclosure, even if the position of the underpassing prevention bumper is set at a low position, the reliability of the fixation of the underpassing prevention bumper to the vehicle frame can be ensured. [Brief description of the drawings]

[0011] [Figure 1] A schematic diagram for explaining the mounting position of a rear intrusion prevention device on a large vehicle [Diagram 2] FIG. 13 is a perspective view for explaining the mounting position of the rear intrusion prevention device; [Diagram 3] FIG. 2 is a schematic plan view showing the installation state of the rear intrusion prevention device as seen from the side; [Figure 4] FIG. 1 is a schematic plan view showing an installation state of a rear intrusion prevention device as viewed from the rear; [Diagram 5] A diagram showing an example of lowering the position of the bumper to prevent vehicles from crawling under [Figure 6] A diagram showing an example of lowering the position of the bumper to prevent vehicles from crawling under [Figure 7] FIG. 2 is a diagram for explaining a mounting position of the rear intrusion prevention device of the embodiment on a large vehicle. [Figure 8] FIG. 2 is a schematic plan view of a rear intrusion prevention device according to an embodiment, seen from the side of a large vehicle; [Figure 9] FIG. 1 is a schematic plan view of a rear intrusion prevention device according to an embodiment, seen from the rear of a large vehicle; [Figure 10] Perspective view of the intermediate bracket [Figure 11] FIG. 2 is a detailed plan view of the rear intrusion prevention device according to the embodiment, seen from the side of a large vehicle; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] <Background to this disclosure> Before describing the embodiments, the findings of the inventors that led to the present disclosure will be described.

[0013] As shown in FIG. 1, the rear-end intrusion prevention device 10 is attached to the rear position of a large vehicle 20, and prevents the small vehicle 30 from slipping under the large vehicle 20 when the small vehicle 30 collides with the large vehicle 20.

[0014] 2 is a schematic perspective view showing an example of mounting the rear-end intrusion prevention device 10 to a large vehicle 20. The rear-end intrusion prevention device 10 is composed of an underpassing prevention bumper 11 and a bracket 12. The underpassing prevention bumper 11 is mounted to a body frame 21 of the large vehicle 20 via the bracket 12.

[0015] Fig. 3 is a schematic plan view showing the attached state of the rear intrusion prevention device 10 as viewed from the side. Fig. 4 is a schematic plan view showing the attached state of the rear intrusion prevention device 10 as viewed from the rear.

[0016] Figures 5 and 6 are diagrams showing an example in which the position of the underpassing prevention bumper 11 is lowered in the configuration shown in Figures 3 and 4. In the examples of Figures 5 and 6, the position of the underpassing prevention bumper 11 is lowered by extending the length of the bracket 12a downward.

[0017] 5 and 6, if a rear vehicle (small vehicle 30 in FIG. 1) collides with the underrunning prevention bumper 11 and a force in the direction shown by the arrow in FIG. 5 acts on the underrunning prevention bumper 11, a large moment will be applied around the attachment point of the bracket 12a to the vehicle body frame 21. Specifically, the moment will increase by the amount that the length of the bracket 12a is extended downward. As a result, there is a risk that the attachment strength of the bracket 12a to the vehicle body frame 21 will not be able to withstand the moment, and the reliability of the rear intrusion prevention device 10 will decrease.

[0018] Through such considerations, the inventors of the present disclosure have realized a rear intrusion prevention device for a vehicle that can ensure reliable fixation of the undercarriage prevention bumper to the vehicle frame even when the position of the undercarriage prevention bumper is set at a low position.

[0019] <Embodiment> Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings.

[0020] 7 to 11, in which the same reference numerals are assigned to parts corresponding to those in Figs. 1 to 6, are diagrams for explaining the rear-end intrusion prevention device 100 of this embodiment. Specifically, Fig. 7 is a diagram showing the mounting position of the rear-end intrusion prevention device 100 on the large vehicle 20. Fig. 8 is a schematic plan view of the rear-end intrusion prevention device 100 as viewed from the side of the large vehicle 20. Fig. 9 is a schematic plan view of the rear-end intrusion prevention device 100 as viewed from the rear of the large vehicle 20. Fig. 10 is a perspective view showing a detailed configuration of the intermediate bracket 101. Fig. 11 is a detailed plan view of the rear-end intrusion prevention device 100 as viewed from the side of the large vehicle 20.

[0021] One feature of the rear intrusion prevention device 100 of the present embodiment is that it has an intermediate bracket 101, and in addition, the shape of the intermediate bracket 101 is contrived.

[0022] Specifically, the rear intrusion prevention device 100 connects a rear intrusion prevention unit (corresponding to the conventional rear intrusion prevention device 10) 10a to the vehicle body frame via an intermediate bracket 101. Thereby, the position of the rear intrusion prevention unit 10U can be lowered according to the vertical length of the intermediate bracket 101. Specifically, h1 (FIG. 3) < h2 (FIG. 8) can be set.

[0023] In addition, the longitudinal length of the intermediate bracket 101 is made longer than the longitudinal length of the bracket 12. As a result, the area overlapping the vehicle body frame 21 increases, so that the intermediate bracket 101 can be firmly connected to the vehicle body frame 21. In this specification, the forward direction and the front side respectively mean the forward direction and the front side of the vehicle, and the rearward direction and the rear side respectively mean the rearward direction and the rear side of the vehicle.

[0024] Also, as can be seen from FIG. 10, the intermediate bracket 101 has a base 101a, a flange 101b protruding vertically from the base 101a, and a rib 101c provided between the base 101a and the flange 101b. The base 101a, the flange 101b, and the rib 101c are joined together by, for example, welding.

[0025] The anti-submerging bumper 11, the bracket 12, the vehicle body frame 21, and the intermediate bracket 101 are made of, for example, materials such as iron and stainless steel.

[0026] Two intermediate brackets 101 are provided in the left-right direction so as to correspond to the bracket 12. That is, the two intermediate brackets 101 are provided at respective positions corresponding to the bracket 12 in FIG. 2.

[0027] 11, the rear intrusion prevention unit 10U is connected to a lower portion of an intermediate bracket 101 by a bolt 14. The intermediate bracket 101 is connected to a side surface of the vehicle body frame 21 by a bolt 15.

[0028] In the conventional configuration, the rear intrusion prevention device 10U is connected to the side of the vehicle body frame 21 by bolts 14. In order to lower the position of the underpassing prevention bumper 11 downward, measures such as using a bracket 12a that is long in the vertical direction are taken, as explained in Figures 5 and 6. In the configuration of this embodiment, instead of this measure, an intermediate bracket 101 is used.

[0029] In the above-described configuration, the rear-end intrusion prevention device 100 of this embodiment is provided with the intermediate bracket 101, so that the position of the undercarriage prevention bumper 11 can be lowered according to the vertical length of the intermediate bracket 101.

[0030] In addition, even if a small vehicle 30 (Figure 7) collides with the anti-underrunning bumper 11 from behind, as shown by the arrow (input) in Figure 8, the rear intrusion prevention device 100 is connected to the vehicle frame 21 using an intermediate bracket 101 that is wider than the bracket 12, so that the rigidity against moments is high and the possibility of the rear intrusion prevention device 100 falling off the vehicle frame 21 is reduced.

[0031] In addition, the flange 101b also restricts the movement of the intermediate bracket 101 that tends to rotate due to a collision with the undercarriage prevention bumper 11. Specifically, the upper surface of the intermediate bracket 101 abuts against the lower surface of the body frame 21, thereby preventing the intermediate bracket 101 from rotating.

[0032] Furthermore, since triangular rib 101c is provided between base 101a and flange 101b, when the lower part of base 101a tries to rotate due to a collision, this rotational force is transmitted to flange 101b via rib 101c. As a result, even if a large rotational force is generated, flange 101b rotates supported by rib 101c, thereby preventing damage to flange 101b when flange 101b abuts against the lower surface of body frame 21.

[0033] 9, in this embodiment, flange 101b is formed at a position where a gap is generated between the flange 101b and the underside of body frame 21. This makes it possible to attach intermediate bracket 101 without flange 101b hitting body frame 21 even if there is a manufacturing error in body frame 21 or base 101a.

[0034] In this embodiment, the base 101a is formed with a step 101a1 (which may be called a joggle processing) such that the lower part of the base 101a is recessed toward the vehicle body frame 21. This step 101a1 is, for example, approximately the thickness of the base 101a. This allows the amount of protrusion of the bracket 12 to the side of the vehicle body frame 21 when the rear intrusion prevention unit 10U is connected to the intermediate bracket 101 to be approximately the same as when the bracket 12 is directly connected to the vehicle body frame 21. As a result, even when the intermediate bracket 101 is provided, the position of the rear intrusion prevention unit 10U in the left-right direction does not change, which is preferable.

[0035] As described above, according to this embodiment, by providing the intermediate bracket 101, it is possible to realize a vehicle rear intrusion prevention device 100 that can ensure reliable fixing of the underpassing prevention bumper 11 to the vehicle frame 21 even if the position of the underpassing prevention bumper 11 is set to a low position, that is, even if the moment due to a collision with the underpassing prevention bumper 11 increases.

[0036] Specifically, the above-mentioned effects can be achieved by the intermediate bracket 101 having one or more of the following configurations. Of course, the more combinations of configurations, the better.

[0037] (i) The length of the intermediate bracket 101 in the front-rear direction is made longer than the length of the bracket 12 in the front-rear direction. (ii) Provide a flange 101b. (iii) A rib 101c is provided.

[0038] The above-described embodiment is merely an example of the embodiment of the present invention, and the technical scope of the present invention should not be interpreted as being limited by the embodiment. In other words, the present invention can be embodied in various forms without departing from the gist or main characteristics of the present invention.

[0039] In the above embodiment, the intermediate bracket 101 is provided separately from the rear intrusion prevention unit 10U, but the present invention is not limited to this, and the shape of the bracket 12 may be a shape that includes the function of the intermediate bracket 101. For example, the length of the bracket 12 is made longer in the vertical direction, and the connection portion with the vehicle body frame 21 is made wider. This allows the bracket 12 to have the same function as the base 101a. Furthermore, the bracket 12 is provided with a flange 101b and a rib 101c. In this way, the same effect as the above embodiment can be obtained. In other words, in the present disclosure, the base may be anything that is connected to the front surface of the underpassing prevention bumper 11 and the side surface of the vehicle body frame 21, and in the case of the embodiment, the base is composed of the base 101a of the intermediate bracket 101 and the bracket 12a. In other embodiments, the base may be the bracket 12a. However, by providing an intermediate bracket 101 as in the embodiment (i.e., by making the base consist of the base 101a of the intermediate bracket 101 and the bracket 12a), there is the advantage that the position of the anti-underrunning bumper 11 can be lowered and the reliability of the fixing of the anti-underrunning bumper 11 can be ensured without changing the design of the existing rear intrusion prevention unit 10U.

[0040] In the above-described embodiment, the intermediate bracket 101 is provided with a flange 101b and a rib 101c, but only one of the flange 101b or the rib 101c may be provided. In short, it is sufficient to provide an abutment member that extends from the base 101a so as to face the underside of the body frame 21 and abuts against the underside of the body frame 21 when the base 101a rotates.

[0041] One aspect of the rear intrusion prevention device disclosed herein comprises an anti-underrunning bumper 11, and a connecting member (in the case of the embodiment, an intermediate bracket 101) that is provided between the anti-underrunning bumper 11 and the vehicle body frame 21 and connects the anti-underrunning bumper 11 to the vehicle body frame 21, and the connecting member (in the case of the embodiment, the intermediate bracket 101) comprises a base 101a that is connected to the front surface of the anti-underrunning bumper 11 and the side surface of the vehicle body frame 21, and an abutment member (in the case of the embodiment, a flange 101b) that extends from the base 101a to face the underside of the vehicle body frame 21 and abuts against the underside of the vehicle body frame 21 when the base 101a rotates.

[0042] In one embodiment of the rear intrusion prevention device disclosed herein, the base of the connecting member is divided into a first base (bracket 12) connected to the undercarriage prevention bumper 11 and a second base (base 101a of the intermediate bracket 101) connected to the vehicle body frame 21, and the second base (base 101a of the intermediate bracket 101) is wider than the first base (bracket 12). [Industrial Applicability]

[0043] The present disclosure is widely applicable to rear-end intrusion prevention devices that prevent large vehicles from sneaking into small vehicles. [Explanation of symbols]

[0044] 10, 100 Rear intrusion prevention device 10U Rear Inrush Prevention Unit 11 Anti-submersion bumper 12, 12a Bracket 14, 15 volts 20 Large vehicles 21 Body frame 30 Small Vehicles 101 Intermediate bracket 101a Base 101a1 Step 101b flange 101c Rib 102 Gap

Claims

1. A bumper to prevent vehicles from crawling under, a connecting member provided between the anti-underpassing bumper and a vehicle body frame, the connecting member connecting the anti-underpassing bumper to the vehicle body frame; Equipped with The connecting member is a base connected to a front surface of the anti-underrunning bumper and a side surface of the vehicle body frame; a contact member that extends from the base to face a lower surface of the body frame and contacts the lower surface of the body frame when the base rotates; Equipped with Rear intrusion prevention device.

2. The abutment member is a flange extending from the base so as to face a lower surface of the vehicle body frame. The rear intrusion prevention device according to claim 1 .

3. Further comprising a rib provided between the base and the flange. The rear intrusion prevention device according to claim 2 .

4. There is a gap between the contact member and the lower surface of the vehicle body frame. The rear intrusion prevention device according to claim 1 .

5. the base of the connecting member is divided into a first base connected to the undercarriage prevention bumper and a second base connected to the vehicle body frame, The second base is wider than the first base. The rear intrusion prevention device according to claim 1 .

6. the anti-submersion bumper and the first base are formed in advance as an integrated unit, The unit is connected to the vehicle body frame via the second base. A rear intrusion prevention device according to claim 5.

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