JPH0214962Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is fixed near the front or rear end of a side member that constitutes the frame of an automobile.
This invention relates to a tow hook used for towing a car.

(Prior Art) Conventionally, there is a tow hook for an automobile as shown in FIG.

That is, in FIG. 3, a towing hook is fixedly attached to the front or rear side of a side member S that constitutes the frame of the automobile and is disposed in the longitudinal direction of the automobile.

For example, as shown in FIG. 3A, the upper edge of the tow hook _K1 , which is formed from a single plate and has a substantially inverted triangular shape, is fixed to the outer wall of the side member S, and the tow hook _K1 is placed below the side member S. There is a type in which a hook hole 51 is drilled.

In addition, as shown in Fig. 3B, the upper part of the tow hook _K2 , which is formed by bending a single bar, is fixed to the outer wall of the side member S by welding or the like, and is bent downward of the side member S. Some types have a protruding hook portion 52.

Furthermore, as shown in FIG. 3C, the upper part of the tow hook _K3 , which is formed of a bar and has a reinforcing plate integrally fixed to the upper part, is welded to the outer wall of the side member S, There is a type in which a hook portion 53 formed in a curved shape from a rod material is protruded downward.

In this type of conventional tow hook,
Each was fixed along the longitudinal direction of the outer wall of the side member S by welding or the like. Therefore, in the longitudinal direction of the side member S, a space T in the figure is provided as a fixing space, and the side members S are welded.

By the way, when a car collides, the collision energy is applied in the longitudinal direction of the side member and the side member is crushed along the longitudinal direction, thereby absorbing and buffering the collision energy.
In the towing hook of the above structure, since the hook fixing space T is formed along the longitudinal direction of the side member, the side member will not be crushed in the event of a collision between the spaces T where the hook is fixed. Space T had the problem that collision energy was not buffered.

(Purpose) The present invention was devised in view of the above-mentioned problems, and it is an object of the present invention to provide a towing hook that does not impair its role as a towing hook in any way and also does not impair the ability of the side members to absorb collision energy. That is.

(Means for Achieving the Object) In order to achieve the above object, the present invention aims to provide a vehicle frame near the front or rear end of a side member of an automobile frame having a channel-shaped cross-section capable of absorbing collision energy by retracting in the longitudinal direction in the event of a collision. The hook is a towing hook whose hook part projects downward and whose upper end is fixed to the side wall of the side member, and the hook is attached to the side member in such a way that it straddles the side wall of the side member from below. A tow hook whose upper end is fixedly installed along the width direction, and whose upper end is supported by a reinforcing member fixed to or attached to the side member in a state where the hook part does not interfere with absorption of collision energy by the side member. That is.

(Function) In the event of a car collision, since the towing hook is disposed perpendicular to the direction in which collision energy is applied, the absorption of collision energy by the side members is not hindered in any way, and the side members are moved in the longitudinal direction by the collision energy. be crushed by

In addition, during towing work, the reinforcing member is attached to the side member, so when towing the hooking part of the hook, the reinforcing member acts in a reinforcing manner against the towing load, thereby strengthening the hooking part of the hook. This prevents the hook from bending in the direction of the load, allowing the hook to be effectively used for traction.

(Detailed explanation of the structure of the invention) This invention has a hook part near the front or rear end of a side member of an automobile frame that has a channel-shaped cross section that can retract in the longitudinal direction and absorb collision energy in the event of a collision. A towing hook that protrudes downward and has an upper end fixed to the side wall of the side member, and the hook extends from the upper end along the width direction of the side member so as to straddle the side wall of the side member from below. The upper portion of the hook portion is supported by a reinforcing member fixed to or in contact with the side member in a manner that does not prevent the side member from absorbing collision energy. That is, the opposing surfaces of the open upper end are fixed to both side walls of a side member having a channel-shaped cross section with the upper portions of a pair of substantially parallel left and right side walls open, and the curved hook portion is attached to the side member. A U-shaped tie-down hook protrudes downward, an upper part is fixed to the side member at a position away from the tie-down hook in the direction of the load applied to the tie-down hook, and a lower part is the curved pull of the tie-down hook. and a tie-down reinforcing member that abuts the tie-down hook above the hook.

Further, the reinforcing member has a channel-shaped cross section that is open at the bottom with respect to the tie-down hook, and the left and right side walls are welded to both inner walls of the tie-down hook while the upper surface is in contact with the lower surface of the side member. It can also have a different structure.

In this way, in the towing hook of the present invention,
By adopting a structure in which the upper end portion is fixed along the width direction of the side member, which is a direction perpendicular to the longitudinal direction of the side member, and the hook portion protruding downward is supported and reinforced by a reinforcing member, In normal towing work, a towing load is applied to the hook portion of the hook, and the towing hook is used for towing by being supported and reinforced by the reinforcing member.

In addition, when a car crashes, the side member retracts in the longitudinal direction and absorbs the collision energy, but since the towing hook is fixed along the width direction of the side member, there is no way to prevent the side member from absorbing the collision energy. There is no hindrance.

(Example) Examples of the present invention will be described below.

FIG. 1 shows a first embodiment, and in the figure, a side member 1 that constitutes the frame of an automobile and is disposed along the longitudinal direction of the automobile has a channel-shaped cross section that is open at the top. There is. That is, the side member 1 is formed into a channel shape by a pair of substantially parallel side walls 1a and 1b and a bottom surface 1c located below the side walls.
2 in the figure is a tie-down hook, and 3 in the figure is a reinforcing member. The tie-down hook 2 and reinforcing member 3 form a traction hook K.

First, let me explain about tie-down hook 2.
The tie-down hook 2 is formed by curving a round bar into a U-shape, and is composed of substantially parallel straight parts 2a and 2b and a curved part 2c located below the straight parts 2a and 2b. It is U-shaped. The curved portion 2c and the straight portions 2a and 2
A hooking portion 4 is formed between b.

This tie-down hook 2 has straight parts 2a and 2
The upper part of b is welded to the side walls 1a and 1b of the side member 1 so as to straddle the side member 1 from below. That is, the upper part of the straight part 2a of the tie-down hook 2 is welded to the side wall 1a of the side member 1, and the upper part of the straight part 2b is welded to the side wall 1b of the side member 1. That is, the welding direction of the tie-down hook 2 coincides with the width direction of the side member 1.

Next, the reinforcing member 3 has a channel-shaped cross section and is open at the bottom. That is, a pair of substantially parallel side walls 3a and 3b are formed into a trapezoid shape with the sides narrowed downward, and an upper surface 3c is integrally formed at the upper part of the side walls 3a and 3b. Note that reinforcing recesses 3d are provided between the side wall 3a and the top surface 3c and between the side wall 3b and the top surface 3c.

The reinforcing member 3 formed in this way has an upper surface 3c.
is attached to the bottom surface 1c of the side member 1, the side wall 3a is welded to the straight part 2a of the tie-down hook 2, and the side wall 3b is welded to the straight part 2a of the tie-down hook 2.
It is welded to b.

In this embodiment of the towing hook, when a rope or the like is hooked to the hooking part 4 of the tie-down hook 2 and towed in the FR direction, the traction load in the FR direction is transferred to the side through the reinforcing member 3. This is transmitted to the member 1, and towing work can be performed without the hook portion 4 of the tie-down hook 2 bending in the FR direction. Even when towing in the opposite direction to the FR direction, the hook portion 4 is similarly reinforced by the reinforcing member 3.

In addition, when a car collides, collision energy acts in the longitudinal direction of the side member 1, but since the upper surface 3c of the reinforcing member 3 is not welded to the bottom surface 1c of the side member 1, the side member 1 is attached to the reinforcing member 1. 3, it can be crushed in its longitudinal direction and absorb the collision energy. Further, since the direction in which the upper part of the tie-down hook 2 is welded to the side member is perpendicular to the direction in which collision energy is applied, there is no problem when the side member absorbs collision energy.

Next, a second embodiment of the present invention will be described based on FIG.

In FIGS. 2A and 2B, the side member 1 having a channel-shaped cross section opening upward is formed into a channel shape by side walls 1a, 1b and a bottom surface 1c. In contrast to this side member 1, the tow hook K is composed of a tie-down hook 5 formed of a bar material in a U-shape, and a reinforcing member 6 similarly formed of a bar material in a U-shape. There is.

That is, the tie-down hook 5 is formed of a single bar into a curved shape, and has a pair of straight parts 5 that are open at the top.
a and 5b and a curved portion 5c located below, and a space for a hook portion 7 is formed inside the curved portion 5c. This tie down hook 5
The upper part of the straight part 5a is welded to the side wall 1a of the side member 1, and the straight part 5b is welded to the side wall 1b of the side member 1. Note that this tie-down hook 5 is fixed to the side member 1 with a curved portion 5c inclined in the FR direction.

Next, the reinforcing member 6 is formed by bending a single bar, and has a pair of straight parts 6a and 6b, an upper side part 6c connecting the upper parts, and a lower end of the straight parts 6a and 6b. Lower side portions 6d and 6e bent in the FR direction are integrally formed. The upper side 6c of this reinforcing member 6 has a width substantially equal to the width direction of the side member 1, and the bottom surface 1 of the side member 1
It is welded and fixed to c. During this welding and fixing, the lower side 6d of the reinforcing member 6 comes into contact with the straight portion 5a of the tie-down hook 5, and the lower side 6e comes into contact with the straight portion 5d of the tie-down hook 5.

In the towing hook K of this example configured in this way, when the towing hook K is towed in the FR direction, the lower sides 6d and 6e of the reinforcing member 6 are placed above the hooking part 7, and the tie-down hook 5 , the curved portion 5c is prevented from being bent in the traction direction.

In addition, in the event of a car collision, since there is a distance M between the welded portion of the upper end of the tie-down hook 5 and the welded portion of the upper side 6c of the reinforcing member 6 to the side member 1, the side member 1 absorbs the collision energy. When the side member is crushed by absorbing the collision energy, the crushing occurs between the distance M as shown in FIG.

(Effects of the invention) The present invention fixes the upper end of the towing hook along the width direction of the side member, which has a channel-shaped cross section capable of absorbing collision energy, so that the side member can be easily moved in the event of a car collision. When absorbing collision energy, the towing hook does not pose any obstacle and can effectively absorb collision energy. In addition, the reinforcing members are arranged in a manner that does not hinder the absorption of collision energy.
This has the effect that the towing work can be carried out effectively during normal towing work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a state in which a towing hook is attached to a side member according to a first embodiment of the present invention, Fig. 2 shows a second embodiment of the present invention, and Fig. 2A shows a towing hook attached to a side member. Figure 2B is a side view of Figure 2A,
Figure 2 C is a side view showing the side member in a collapsed state after absorbing collision energy, Figure 3 A, B,
FIG. 3C is a side view showing the state in which a conventional tow hook is attached. K...Tow hook, 1...Side member, 1
a, 1b... side wall, 2, 5... tie-down hook, 3, 6... reinforcing member, 4, 7... hook portion.

Claims (1)

[Claims for Utility Model Registration] (1) A hook part is placed downward near the front or rear end of a side member of an automobile frame that has a channel-shaped cross section that can retract in the longitudinal direction and absorb collision energy in the event of a collision. A towing hook whose upper end is fixed to the side wall of the side member, the hook extending along the width direction of the side member so as to straddle the side wall of the side member from below. What is claimed is: 1. A towing hook, wherein the towing hook is fixedly installed, and the hook portion is supported by a reinforcing member whose upper part is fixed to or in contact with the side member in a state that does not prevent the side member from absorbing collision energy. (2) The side member has a pair of substantially parallel left and right side walls that are open above and have a channel-like cross section, and the side members have curved hook portions that are fixed to opposing surfaces of the open upper ends of the side members. It has a U-shaped tie-down hook that protrudes downward and a channel-shaped cross section that is open at the bottom, and the left and right side walls are attached to both inner surfaces of the tie-down hook with the upper surface in contact with the lower surface of the side member. A towing hook according to claim 1, which is constructed of a welded tie-down hook reinforcing material. (3) The side member has a pair of substantially parallel left and right side walls that are open above and have a channel-like cross section, and the side members have curved hook portions with opposing surfaces of the open upper ends fixed to the side walls. a U-shaped tie-down hook that protrudes downward, an upper part of which is fixed to the side member at a position away from the tie-down hook in the direction of the load applied to the tie-down hook, and a lower part of the tie-down hook that is curved and a tie-down hook reinforcing member that abuts the tie-down hook above the hook portion.