JP2501434Y2 - Trailer hitch mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a trailer hitch mounting structure for an automobile.

(Prior Art) Generally, a trailer hitch for pulling a trailer is
As schematically shown in FIG. 6, a hitch mounting portion (A) formed by connecting a horizontal rod (A1) extending in the vehicle width direction and a vertical rod (A2) extending in the front-rear direction in a cross shape in plan view, The hitch attachment part (A) further comprises a hitch main part (B) having a trailer pivotal support part (B1) extending further rearward from the vertical rod (A2), and the lateral rod in the hitch attachment part (A). (A
Both ends of 1) are bolted to left and right side members (D) arranged on the lower surface of the floor panel (C), respectively, and the front end of the vertical rod (A2) in the hitch mounting portion (A) is connected to the side of the side. It is bolted to the cross member (E) installed between the members (D).

(Problems to be solved by the invention) By the way, in the above-mentioned trailer hitch mounting structure, when the trailer is towed, a very large tensile load acts on the pivotal support portion (B1), so that the conventional heavy load is applied. In order to withstand, as shown in FIGS. 6 and 7,
A large first reinforcing plate (F) is arranged on the rear floor panel (C) of the vehicle body, and a large second reinforcing plate (G) is fixed to the rear portion of the hitch mounting portion (A). At present, the second reinforcing plate (G) is bolted to the rear floor panel (C) together with the first reinforcing plate (F) to enhance the rigidity of the vehicle body and the strength of assembling the trailer hitch to the vehicle body. Therefore, the weight of the vehicle body is increased accordingly and the power performance is deteriorated, and it also takes time to assemble or remove the trailer hitch to or from the vehicle body.

The present invention was developed in view of the above circumstances,
Paying attention to the fact that a strength-compensated transport hook is usually provided on the rear part of the vehicle, and the effective use of the transport hook makes it possible to increase the strength of the trailer hitch assembly to the vehicle body without using a reinforcing member. It is to provide a trailer hitch mounting structure that can be enhanced.

(Means for Solving the Problems) However, the present invention is directed to a vehicle having a transport hook attached to the rear end of the vehicle body. The trailer hitch main body portion and the hitch mounting portion of the trailer hitch including a hitch mounting portion having a connecting portion extending in the same direction are divided, and the hitch mounting portion is disposed in the front portion of the transport hook, While being assembled to a rigid member, a connecting plate facing the transport hook is provided at the base of the hitch main body and the connecting portion of the hitch mounting portion, and these connecting plates are connected by sandwiching the transport hook. It is characterized by doing so.

(Operation) According to the present invention, since the hitch main body is connected to the hitch mounting portion with the strength-compensated transport hook interposed therebetween, the load input to the pivotal support portion of the hitch main body is applied to the vehicle body. It can be reliably received even with the transport hook firmly attached to the.

(Embodiment) An embodiment of a trailer hitch mounting structure according to the present invention will be described below with reference to the drawings.

In the figure, (1) is a rear floor panel, (11) is a side member disposed on each side of the lower surface of the floor panel (1) in the vehicle width direction, and (12) is a cross member installed between the side members (11). A transport hook (2) is attached to a corner portion of a rear end portion of the rear floor panel (1) through a reinforcement (20).

The transport hook (2) is made of a metal wire rod, and the metal wire rod is bent in a U shape so that both shaft ends thereof have excellent strength, that is, the rear floor panel (1).
It is fixed by welding to the vertical wall (10) at the rear end corner portion so that the hooking hole (21) of the transport hook (2) is opened in the front-rear direction of the vehicle body.

In the trailer hitch attached to the lower surface of the rear floor panel (1), the hitch main body (3) having a spherical support (30) and the hitch main body (3) are separately formed. The hitch mounting portion (4) having the connecting portion (40) of the main body portion (3). In the embodiment shown in the drawings, the hitch main body portion (3) is formed of a square pipe, and As shown in the drawing, the rear end side is bent obliquely upward and the pivotal support portion (30) is fixed to the bent end.

The hitch mounting portion (4) is formed by connecting a horizontal rod (41) made of a square pipe extending in the vehicle width direction and a vertical rod (42) made of a square pipe extending in the front-rear direction in a cross shape in a plan view. Vertical rod (4
2) The rear end side serves as the connecting portion (40), and the front end portion of the vertical rod (42) and both end portions of the horizontal rod (41) respectively have a connecting bracket (42a) having an inverted hat cross section. (41a) is fixed.

A connecting plate (5) having a plurality of bolt holes (51) at the front end of the hitch main body (3), and a rear end of the vertical rod (42) at the hitch mounting portion (4), that is, the connection. A connecting plate (6) having a plurality of bolt holes (61) is also fixed to the rear end of the portion (40), and the transformer is attached to the connecting plate (5) on the hitch main body (3) side. A spacer (52) having a thickness substantially the same as the diameter of the metal wire forming the port hook (2) and having a shape substantially the same as the shape of the hook hole (21) of the transport hook (5) is fixed. .

 Incidentally, (8) in the figure shows a rear bumper.

In the trailer hitch having the above structure, the hitch mounting portion (4) is assembled to the lower surface side of the rear floor panel (1). Specifically, as shown in FIG. Both ends of the (41) are connected to the side member (11) via the connecting bracket (41a), and the front end of the vertical rod (42) is connected to the cross member (12) via the connecting bracket (42a). The connection plate (6) attached to the rear end of the vertical rod (12), that is, the rear end of the connecting portion (40) is attached to the front portion of the transport hook (2) by bolting them to each other. Contact them.

Then, the connecting plate (5) on the side of the hitch main body (3) is applied to the rear portion of the transport hook (2) to fit the spacer (52) into the hook hole (21). , Insert the bolt (7) into the bolt holes (51) (61) of the connecting plates (5) (6), and insert the nut (70) into the insertion end.
The hitch main body part (3) is connected to the hitch mounting part (4) by screwing together, and the both connecting plates (5) are connected.
At (6), the transport hook (2) is held.

In the trailer hitch assembled as described above, since the spacer (52) is closely fitted in the hook hole (21) of the transport hook (2), the rear end side of the trailer hitch is the transformer. For example, the port hook (2) does not move vertically.

Therefore, when a trailer (not shown) is locked to the pivot portion (30) and the trailer is towed, a very large tensile load acts on the trailer hitch. Part is the transport hook (2) which is firmly fixed to the rear floor panel (1).
Can be effectively received by.

In the above embodiment, the connecting plates (5) and (6) are fastened by the bolt (7) with the transport hook (2) sandwiched between them, but the invention is not limited to bolt fastening. They may be joined by other joining means such as joining.

(Effects of the Invention) As described above, the present invention is a vehicle in which a transport hook is attached to a rear end of a vehicle body, and a hitch main body portion having a pivot portion and a connection which is assembled to a rigid member of the vehicle body and extends rearward. The trailer hitch main body portion and the hitch mounting portion of the trailer hitch including the hitch mounting portion having a portion are divided, and the hitch mounting portion is arranged in the front portion of the transport hook, and the rigid member of the vehicle body. On the other hand, the base plate of the hitch main body and the connection part of the hitch mounting part are provided with connecting plates facing the transport hooks, and the connecting plates are connected so as to sandwich the transport hooks. Therefore, the hitch main body is fixed to the vehicle body with the transport hook sandwiched between the hitch main body and the hitch mounting portion. The load that is input to the pivot part of the vehicle can be effectively received even by the transport hook, and therefore it is not necessary to attach a reinforcing plate to the vehicle body as in the conventional case, and the weight of the vehicle can be lightened accordingly, and the power performance can be improved. The hitch main body can be easily removed when the trailer is not towed.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a trailer hitch mounting structure according to the present invention, FIG. 2 is a cross-sectional view of the main part thereof, and FIG.
The figure is the same schematic configuration diagram, FIG. 4 is a perspective view of a main part of a trailer hitch, FIG. 5 is a schematic perspective view of a body to which the trailer hitch is attached, and FIG. FIG. 7 is an enlarged sectional view taken along line XX of FIG. (1) …… Rear floor panel (car body) (2) …… Transport hook (3) …… Hitch main part (30) …… Pivot support (4) …… Hitch mounting part (5) …… Connecting plate (6) ) …… Connecting plate

Claims (1)

(57) [Scope of utility model registration request] 1. A hitch main body having a pivot portion in an automobile having a transport hook attached to a rear end portion of a vehicle body,
The hitch main part and the hitch mounting part of the trailer hitch, which are assembled to a rigid member of the vehicle body and have a connecting part extending rearward, are divided into the hitch mounting part and the hitch mounting part. While being arranged at the front part of the hook and assembled to the rigid member of the vehicle body, a connecting plate facing the transport hook is provided at the base part of the hitch main part and the connection part of the hitch attachment part. A trailer hitch mounting structure, characterized in that a connecting plate is connected by sandwiching the transport hook.