JPS6340322Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hit member attachment device for a trailer, which increases the strength of the hit member attachment portion.

Apart from trailers that are part of large freight vehicles, the connection between a motor vehicle and a trailer such as a camper car that can be easily towed by an ordinary passenger or freight vehicle is as shown in Figure 1. ing. That is, a hitch member 3 is attached to the rear of the vehicle body 2 of the vehicle 1 on the towing side, and a bracket 4 is attached to the center of this hitch member 3.
The tip of a connecting arm 7 provided at the front of the trailer 6 on the towed side is fitted into the hitch ball 5 to connect the trailer.

In the conventional trailer coupling section having such a structure, the hitch member 3 is shaped such that both ends thereof are bent upward and then expanded outward. This is because a license plate (not shown) is attached to the space above the bend created by this bend. Since the hit member 3 has such a bent shape, when an external force due to the weight load of a towed trailer or the like acts on the hit member 3, a bending force is applied to the hit member 3. Since the hitch member 3 was attached to the vehicle body 2 only by using bolts passing through the hitch member 3, among the loads received in various directions during driving, the load in the vertical direction and the horizontal direction was Although the hitch member is strong, it is weak against loads applied in the front-back direction, and there is a risk that the attachment portion of the hitch member may loosen or break due to this load. For this reason, it was not possible to increase the allowable towing weight.

The object of the present invention is to provide a hitch member attachment device for a trailer that solves these problems. For this reason, the present invention provides a vehicle in which a plate-shaped hitch member is attached to the rear ends of two chassis frames in the vehicle body, in which the hitch member is bent upward at both ends and then expanded outward. and attach L-shaped brackets to the rear ends of the two chassis frames, respectively.
The horizontal portion of the bracket and the portions near both ends of the hit member are fastened with bolts passing through the hit member in the thickness direction, and a hit is attached to at least one of the end of the hit member and the upright portion of the bracket. Bolt insertion holes are provided in the longitudinal direction of the member, a separate plate is provided, and the plate is inserted between the end of the hit member and the upright portion of the bracket by bolts inserted into the bolt insertion holes or by welding. It has a fixed structure. With this configuration,
Due to the bent shape as described above, the hit member, which is bent by external force, becomes integrated with the chassis frame, improving the overall strength.

Hereinafter, one embodiment of the present invention will be described with reference to FIG. 2. Reference numeral 8 denotes chassis frames which are a part of the vehicle body, and two chassis frames 8 are provided in parallel at a predetermined interval. The rear ends of these two chassis frames 8 are connected by a connecting member 9 made of pipe material. An L-shaped bracket 10 is attached to the lower part of the chassis frame 8 by welding, and a bolt 12 that is inserted into a hole 11 drilled in the bracket 10 and the chassis frame 8, Nut 1 screwed into 12
3, a hit member 3, which will be described next, is attached. Note that a reinforcement 14 is interposed between the chassis frame 8 and the nut 13. 15 is Watsusha.

As described above, the hitch member 3 has a shape in which both ends of the plate body are bent upward as shown in the diagram and then expanded outward, and holes 16 are bored in the vicinity of both ends. Bolt 12 hitch member 3
It is designed to be inserted in the thickness direction. A hole 17 is bored in the center of the hit member 3, and the bracket 4 is attached to the hit member 3 by a bolt 19 that is inserted through the hole 17 and the hole 18 of the bracket 4. Note that a nut may be screwed into the bolt 19, but in this embodiment, the hole 17 of the hit member 3 is made into a screw hole, and the nut is screwed into the hole 17 of the hit member 3.

A hole 20 is bored in the bracket 4, and a hitch ball 5 having a male thread 21 at its lower part is inserted through the male thread 21 and is attached by tightening a nut 23 via a washer 22. The end of the hitch member 3 has a female thread 2.
4 is engraved, and a hole 25 is bored in the bracket 10 on the vehicle body frame side. The hitch member 3 and the upright portion of the bracket 10 are connected to a separately provided plate 26 and this plate 26.
The bolt 28 and nut 2 inserted into the hole 27 of
9 (the nut 29 is provided only on the bracket 10 side).

In this device configured in this way, the hitch member 3 has a bolt 12 passing through it.
Since it is attached to the vehicle body 2 side by a plate 26 (one end is not shown) and bolts 28 that are in contact with both ends, when the load applied to the hitch member 3 is in the vertical and horizontal directions while the vehicle is running, This is received by the bolt 12, and when it is in the front-back direction, it is received by the bolt 28. Note that either one side of the bracket 10 or the hitch member 3 of the plate 26 may be welded to these in advance, and only the other side may be fixed with bolts.

Since the present invention is constructed as described above, the permissible towing load can be increased. Furthermore, the vehicle body mounting portion will not be damaged due to towing. Since the structure is simple, less space is required for the mounting part of the vehicle body, and there is no need for reinforcement modification of the vehicle body. Furthermore, the hitch member can be easily attached and removed, a license plate can be attached above the bent part of the hitch member, and the hitch member can also serve as a protector for the rear vehicle body. There are other effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a connecting portion between an automobile and a trailer, and FIG. 2 is a perspective view showing an embodiment of the present invention in an exploded state. 1...Car, 2...Car body, 3...Hitsuchi member, 5...Hitsuchi ball, 6...Trailer,
8... Sea Sea Frame, 12, 28... Bolt, 13, 29... Natsu.

Claims (1)

[Scope of utility model registration request] In a vehicle with a plate-shaped hitch member attached to the rear ends of two chassis frames in the vehicle body,
The hitch member is bent upward at both ends and then expanded outward, and an L-shaped bracket is attached to the rear end of the two chassis frames, and the horizontal portion of the bracket and the The parts near both ends of the hitch member are fastened with bolts passed through the hitch member in the thickness direction, and at least one of the ends of the hitch member and the upright part of the bracket is connected in the longitudinal direction of the hitch member. A bolt insertion hole is provided, a separate plate is provided, and the plate is fixed between the end of the hitch member and the upright portion of the bracket by bolts inserted into the bolt insertion hole or by welding. A hitch member attachment device for trailers.