JPH0423078Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a bumper mounting structure for automobiles.

(Prior art and its problems) It is customary to attach a bumper to a vehicle body via a bumper arm. A conventional example of the mounting structure (Japanese Utility Model Application Publication No. 59-72154) is shown in FIG. In this bumper mounting structure, in order to position the bumper 1 in the longitudinal direction, a bumper mounting bracket 3 is further provided on the bumper arm 2, and a bumper mounting bracket 3 is further provided on the bumper arm 2, and a bumper mounting bracket 3 is provided on the bumper arm 2 to position the bumper 1 in the longitudinal direction. A hat-shaped flange portion 3a formed on the bumper mounting bracket 3 is fitted therein.

However, in such a configuration, a bumper mounting bracket 3 is newly required in addition to the bumper arm 2, which not only increases the number of parts, but also makes the installation work complicated due to the increase in the number of parts.

(Purpose of the invention) This invention was made to solve the above problem, and it is possible to easily position the bumper without adding new parts such as a bracket, and to create a bumper with good workability. The purpose is to provide a mounting structure.

(Means for achieving the objective) The technical means for achieving the above objective is that in a bumper mounting structure that attaches a bumper to a side member on the vehicle body side via a bumper arm, A positioning hole is formed, the bumper arm is inserted into the side member, and with the bottom surface of the bumper arm in contact with the bottom surface of the side member and placed at a predetermined mounting position, the bumper arm is inserted into the positioning hole. The locking pawl is cut and formed integrally with the bottom surface of the other of the side member and the bumper arm.

(Embodiment) FIG. 1 shows a longitudinal sectional view of a bumper mounting structure that is an embodiment of this invention.

This embodiment shows a configuration in which a bumper arm 6 is fixed to the bottom of a side member 7 to attach a bumper 8 to the vehicle body. As shown in a perspective view in FIG. 2, the member 7 has a hat-shaped cross section with a flange portion 7a at the upper end that serves as an attachment portion to the floor panel, and the bumper arm is attached at two locations on the front and rear of the bottom surface of the member 7. A bolt insertion hole 10 for tightening and fixing 6 with a bolt 9 is formed. Further, a positioning square hole 11 is formed in the bottom portion of the side member 7 at an intermediate portion sandwiched between the two bolt insertion holes 10.

On the other hand, the bumper arm 6 connected to the bumper 8 has a cross-sectional shape of U as shown in a perspective view in FIG.
Bolt insertion holes 12 (shown in FIGS. 1 and 5) corresponding to the bolt insertion holes 10 of the side member 7 are formed at two locations on the bottom surface of the bolt insertion holes, and bolt insertion holes 12 (shown in FIGS. A nut 13 is fixed to each. In addition, at the bottom of the bumper arm 6 at the portion sandwiched between the two nuts 13, there is an L-shaped cross-sectional engagement that protrudes downward from the bottom and bends toward the bumper 8, as shown in an enlarged view in FIG. A retaining pawl 14 is formed by cutting and bending, and the bottom surface of the bumper arm 6 comes into contact with the bottom surface of the side member 7, so that each nut 13 on the bumper arm 6 side and each bolt insertion hole 10 on the side member 7 side overlap. When placed in the mounting position, the locking pawl 14 locks into the positioning square hole 11 of the side member 7, as shown in FIG. It is configured so that Note that the width of the locking pawl 14 is formed to be slightly shorter than the width of the positioning square hole 11 on the side member 7 side, so that the bumper arm 6 cannot be positioned in the width direction in the locked state. It's getting messy.

In the above configuration, when fixing the bumper arm 6 to the side member 7, first, as shown in FIG. The bumper arm 6 is inserted into the side member 7 until the bottom surface of the bumper arm 6 comes into contact with the bottom surface of the side member 7. In this state of contact, the locking pawl 14 projects downward from the positioning square hole 11 on the side member 7 side. Next, the bumper arm 6 is moved in the direction to be pulled out from the side member 7, and the locking claw 14 is locked to the edge of the positioning square hole 11 and the bumper arm 6 cannot be pulled out any further (at this time, the nut 13 and The bolt 9 is inserted into the bolt insertion hole 10 from the lower side of the side member 7 and screwed into the nut 13, and the bumper arm 6 is tightened and fixed to the side member 7.

In addition, in this embodiment, the positioning square hole 11 is formed on the side member 7 side, and the locking pawl 14 is formed on the bumper arm 6 side, but conversely, the locking pawl 14 is formed on the side member 7 side, bumper arm 6
It is also possible to form positioning square holes 11 on each side. In the case of the opposite configuration example, the locking pawl 14 may be formed to protrude upward from the bottom surface of the side member 7, with its bending direction facing the insertion direction of the bumper arm 6.

(Effects of the invention) As described above, according to the bumper mounting structure of this invention, the bumper mounting structure can be formed on a part of the bottom surface of either the side member or the bumper arm without adding new parts such as a bracket, and By simply cutting out and forming a locking pawl that locks into the positioning hole on a part of the other bottom surface, the bumper arm can be easily positioned at a predetermined mounting position with respect to the side member, reducing the number of parts. This has the advantage of being able to reduce the amount of damage and simplify the installation work. In addition, since the positioning hole and locking claw are formed on the bottom side of the side member and bumper arm, when locking the locking claw in the positioning hole,
Lift the bumper, insert the bumper arm into the side member, place the bottom of the bumper arm on the bottom of the side member, and slide the bumper arm to position it with part of the weight of the bumper and bumper arm supported by the side member. The use hole and the locking pawl can be locked, reducing the burden on the worker and improving work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a bumper mounting structure that is an embodiment of the invention, Fig. 2 is a perspective view of a side member, Fig. 3 is a perspective view of a bumper arm, Fig. 4 is a partially enlarged perspective view of the bumper arm, FIG. 5 is an exploded longitudinal sectional view showing the state of the embodiment before installation, and FIG. 6 is a longitudinal sectional view of a conventional bumper mounting structure. 6...Bumper arm, 7...Side member, 8
... Bumper, 9 ... Bolt, 10 ... Bolt insertion hole, 11 ... Square hole for positioning, 12 ... Bolt insertion hole, 13 ... Nut, 14 ... Locking pawl.

Claims (1)

[Scope of utility model registration request] In a bumper mounting structure that attaches a bumper to a side member on the vehicle body side via a bumper arm, a positioning hole is formed in the bottom of one of the side member and the bumper arm, the bumper arm is inserted into the side member, and the bumper arm is inserted into the side member. With the bottom surface of the bumper arm in contact with the bottom surface of the side member and placed in a predetermined mounting position, a locking claw that locks into the positioning hole is cut integrally into the bottom surface of the other of the side member and bumper arm. A bumper mounting structure characterized by being formed in an upright manner.