JPH0535549U - Protective safety device for vehicle body end - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a vehicle body end protection and safety device that is easy to install, has good energy absorption efficiency, and enables weight reduction of the vehicle body. [Structure] A side member 2 is arranged in an axial direction of a vehicle frame, and an energy absorbing member 1 is arranged at an end of a vehicle body of the side member 2. The energy absorbing member 1 includes a body 11 and mounting flanges 12 extending rearward on both sides of the body 11.
Have and. The mounting flange 12 is fastened together with the towing hook 86 near the end of the vehicle body together with a mounting member such as a bolt 95 to the side member 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle body end protection and safety device that is easy to install and can reduce the weight of a vehicle body.

[0002]

[Prior art]

 As shown in FIGS. 6 and 7, conventionally, the energy absorbing member 9 is attached and fixed to the vehicle body end portion of the side member 8 arranged in the axial direction of the vehicle frame (not shown) by a bolt 95. As shown in the figure, the energy absorbing member 9 has a flat convex shape having wing-shaped flanges 91 at both ends thereof. Each of the flanges 91 is provided with several bolt mounting holes 910. The energy absorbing member 9 is generally made of an elastic material such as a thin steel plate or plastic foam. This is to facilitate the absorption of energy during low-speed collisions of automobiles.

The side member 8 serves as a structural unit in the side surface portion of the vehicle body and forms a skeleton portion for ensuring the rigidity of the vehicle body. As shown in FIG. 7, the side member 8 is assembled at the front end thereof so as to be orthogonal to the cross member 7. Further, in front of the cross member 7 and the side member 8, a reinforcement (not shown) and a bumper (reference numeral 5 in FIG. 2) are arranged outside the energy absorbing member 9. As a result, the energy generated at the end of the vehicle body is absorbed when the vehicle collides. Therefore, the vehicle body is protected by the energy absorbing member 9 and the like.

By the way, when attaching and fixing the energy absorbing member 9 to the end portion of the vehicle body, as shown in FIGS. 6 and 7, first, the attaching hole 910, the cross member 7 and the side member 8 provided in the flange 91 are attached. Bolts 95 are inserted into the holes 70 and 80 and fastened with nuts 85. On the other hand, mounting plates 862 at both ends of the U-shaped pulling hook 86 are arranged on the outer surface of the side member 8. Then, the pulling hook 86 is fastened with its mounting plate 862 by the nut 85 using a bolt 95. As a result, the tow hook 86 is suspended and attached below the end of the side member 8.

[0005]

[Problems to be solved]

 However, the above conventional technique has the following problems. That is, the energy absorbing member 9 and the pulling hook 86 must be separately attached and fixed to the cross member 7 and the side member 8. Therefore, the number of bolts 95 used is large, and the weight of the vehicle body becomes large. Further, the work of attaching the energy absorbing member 9 and the towing hook 86 becomes complicated, and the productivity is deteriorated.

The energy absorbing member 9 has a flat convex shape, and has wing-shaped flanges 91 at both ends. Therefore, at the time of a collision, the flange 91 may prevent the energy generated at the end of the vehicle body from being absorbed. Therefore, the energy absorption efficiency deteriorates. The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a vehicle body end protection and safety device that is easy to install, has good energy absorption efficiency, and can reduce the weight of the vehicle body. Is.

[0007]

[Means for solving the problem]

 The present invention provides a vehicle body end protection and safety device having a side member arranged in the axial direction of a vehicle frame and an energy absorbing member arranged at the vehicle body end portion of the side member. It has a main body and mounting flanges that extend rearward on both sides of the main body, and the mounting flange is fastened together with the towing hook to the side member by bolts or other fittings near the end of the vehicle body. It is a protection and safety device for the end of the vehicle body. What is most noticeable in the present invention is that the energy absorbing member has a main body and a mounting flange extending rearward thereof, and the mounting flange is attached to the side member together with the towing hook in the vicinity of the end of the vehicle body. That is, they are fastened together and fixed.

The energy absorbing member includes, for example, a box-shaped main body made of a steel plate, and mounting flanges extending rearward on both sides thereof. The energy absorbing member is mainly used to absorb energy generated at the front end portion or the rear end portion of the vehicle body at the time of low-speed collision. Since the box-shaped body is hollow, it is configured to crash in the axial direction of the vehicle frame at the time of a collision and to easily absorb energy. The mounting flanges extend rearward on both sides of the main body and are mounted on the side members in the same axial direction. Therefore, the energy generated during a collision is also absorbed in the axial direction.

The tow hook is made of, for example, a U-shaped metal hook, and is attached in a state of being suspended near the vehicle body end of the side member. The tow hook is used for towing the vehicle body or the like in the event of an automobile failure. As the attachment, for example, a bolt and a nut can be used, and as the nut, a weld nut can be used.

[0010]

[Action and effect]

 In the present invention, the energy absorbing member is fastened and fixed together with the towing hook to the side member by a fitting. Therefore, it is possible to reduce the number of the above-mentioned fixtures used. Therefore, the weight of the vehicle body can be reduced. In addition, the energy absorbing member and the towing hook are fixed together as described above, so that the attachment work of both is facilitated. Therefore, the productivity of the installation work of both can be improved.

Further, the energy absorbing member has mounting flanges extending rearward on both sides of the main body. The mounting flange is mounted in the same axial direction as the side member. Therefore, the energy at the time of collision is absorbed not only in the main body but also in the axial direction of the mounting flange. Therefore, the energy absorption efficiency is improved. As described above, according to the present invention, it is possible to provide a vehicle body end protection and safety device that is easy to install, has good energy absorption efficiency, and can reduce the weight of the vehicle body.

[0012]

【Example】

 Embodiment 1 A vehicle body end protection and safety device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the protection and safety device of this example includes a side member 2 arranged in an axial direction T of a vehicle frame, and an energy absorbing member 1 arranged at an end portion of the vehicle body of the side member 2. Have. As shown in the figure, the energy absorbing member 1 has a main body 11 and mounting flanges 12 extending rearward from both sides of the main body 11, and the mounting flanges 12 together with a towing hook 86 near the end of the vehicle body. It is fastened and fixed to the side member 2 together by a bolt 95 as an attachment.

The body 11 is a flat box-shaped body made of thin steel plate. That is, as shown in FIGS. 1 and 2, the main body 11 has a lateral width M slightly larger than the lateral width of the side member 2. Further, the main body 11 has a vertical width H which is slightly larger than the vertical width N of the side member 2. Further, as shown in the figure, the main body 11 has a protrusion R for crashing and absorbing energy at the time of collision. The mounting flange 12 is formed of a pair of plate-shaped members made of steel plates that are integrally extended rearward on both sides of the main body 11. And, as shown in FIG. 1, the mounting flange 12 has a weld nut 121 which is mounted inside by welding in advance. Further, a bolt hole 120 having substantially the same size as the hole diameter of the weld nut 121 is provided on the outer side of the mounting flange 12.

The side member 2 is made of a long steel plate body having a concave cross section. The side member 2 has a pair of wing-shaped brim portions 21 and 21 extending at both upper ends thereof. The side member 2 has two mounting bolt holes 20 and 20 on both side surfaces thereof. Further, as shown in FIGS. 1 and 2, the side member 2 has a pair of wing-shaped connecting portions 22, 22 protruding leftward and rightward at a front end portion thereof, and a bottom plate 24. Further, the wing-shaped connecting portions 22, 22 are welded with a cross member 3 which abuts them at right angles.

The cross member 3 has a rectangular opening 30 as shown in FIG. The mounting flange 12 of the side member 2 is inserted into the opening 30. As shown in FIG. 1, the tow hook 86 has a U-shaped main body 861 and a pair of mounting plates 862 arranged at both ends of the main body 861. The mounting plate 862 has bolt holes 860 and 860, respectively. Others are the same as in the conventional example.

When mounting the energy absorbing member 1 on the end of the side member 2 on the vehicle body, first, the mounting flange 12 is fitted into the side member 2 through the opening 30 of the cross member 3. Next, the attachment plate 862 of the tow hook 86 is placed on the outer side portion of the bolt hole 20 of the side member 2. Next, a bolt 95 as a mounting tool is inserted into the bolt hole 860 of the mounting plate 862, the bolt hole 20 of the side member 2, and the bolt hole 120 of the mounting flange 12. Then, the tip of the bolt 95 is fastened to the weld nut 121. As a result, the energy absorbing member 1 and the towing hook 86 are fastened and fixed together at the vehicle body end of the side member 2. In the above description, the energy absorbing member 1 is attached to the front end portion of the side member 2 on the front side, but it can be attached to the rear end portion of the side member 2 on the rear side.

Next, the function and effect will be described. In this example, as shown in FIGS. 1 and 2, the energy absorbing member 1 is fixed together with the pulling hook 86 to the side member 2 by a bolt 95 as a fixture. Therefore, it is possible to reduce the number of bolts and nuts used as the above-mentioned fixtures by, for example, 4 to 6 as compared with the conventional case. Therefore, the weight of the vehicle body can be reduced. Further, since the energy absorbing member 1 and the towing hook 86 are fastened and fixed together, the mounting work becomes easy. Therefore, it is possible to improve the productivity of the installation work of both.

Further, the energy absorbing member 1 has mounting flanges 12 extending rearward on both sides of the main body 11. Therefore, at the time of collision, the main body 11 first crashes to absorb energy. Further, the mounting flange 12 absorbs the energy. Therefore, the energy at the time of collision is absorbed by both. Therefore, the energy absorption efficiency is improved.

Embodiment 2 In this embodiment, as shown in FIGS. 3 to 5, the engaging lower piece 13 is provided on the energy absorbing member 1 in the above Embodiment 1, and the bottom surface of the side member 2 is engaged with the cutting member 13. The raising portion 241 is provided. As shown in FIG. 3, the lower engaging piece 13 is arranged like a bottom plate below a pair of mounting flanges 12, 12 extending rearward on both sides of the main body 11.

The cut-and-raised portion 241 is formed in a state in which a portion 240 of the bottom plate 24 of the side member 2 is cut out and raised in the vicinity of the end portion of the vehicle body, as shown in FIG. As shown in FIGS. 4 and 5, the cut-and-raised portion 241 is formed so as to project from the bottom plate 24 in a flat inverted L shape. Then, as shown in FIG. 5, the engaging lower piece 13 has the tip 131 thereof fitted under the cut-and-raised portion 241 to be engaged. As a result, when the energy absorbing member 1 is fastened and fixed together with the towing hook (not shown) near the vehicle body end of the side member 2, the energy absorbing member 1 is temporarily fixed to the side member 2 at a predetermined position. Can be fixed. Others are the same as in the first embodiment.

Therefore, according to this example, the energy absorbing member 1 can be attached to the side member 2 more easily than in the first embodiment. Therefore, the mounting work becomes easier and the productivity is further improved. Further, as shown in FIG. 5, since the tip end portion 131 of the lower engaging piece 13 is engaged with the cut and raised portion 241, the energy at the time of collision can be easily absorbed in the axial direction T. In addition, the same effect as that of the first embodiment can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a vehicle body end protection and safety device according to a first embodiment.

FIG. 2 is a plan view showing an assembled state of the vehicle body end protection and safety device according to the first embodiment.

FIG. 3 is a perspective view of an energy absorbing member having a cut-and-raised lower engaging piece according to the second embodiment.

FIG. 4 is a perspective view of a side member having a cut and raised portion according to the second embodiment.

FIG. 5 is an explanatory diagram showing a mounted state of a vehicle body end protection and safety device according to a second embodiment.

FIG. 6 is a perspective view showing a mounting state of a conventional vehicle body end protection and safety device.

FIG. 7 is an explanatory plan view showing a mounting state of a conventional vehicle body end protection and safety device.

[Explanation of symbols]

 1. ． ． Energy absorbing member, 11. ． ． Main body, 12. ． ． Mounting flange, 13. ． ． Lower engaging piece, 2. ． ． Side member, 241. ． ． Cut and raised part, 3. ． ． Cross member, 86. ． ． Tow hook, 95. ． ． bolt,

Claims (1)

[Scope of utility model registration request] 1. A protective safety device for an end portion of a vehicle body, comprising: a side member disposed in an axial direction of a vehicle frame; and an energy absorbing member disposed at an end portion of the vehicle body of the side member, wherein the energy absorbing member is a main body. And mounting flanges extending rearward on both sides thereof, the mounting flanges being fastened together with a towing hook to a side member together with a mounting member such as a bolt in the vicinity of the end of the vehicle body. A protective safety device for the end of the vehicle.