JPH051495Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a connecting structure for floor cross members in a frame-equipped structural body of a vehicle.

(Prior Art) Conventionally, as a connection structure for a floor cross member 31 in a frame-equipped structural body of this type of vehicle, a floor cross member 31 is attached to a predetermined position of a body floor pan 30 as shown in FIGS. 4 and 5. The cross member 31 has rubber mounts 34 attached to outriggers 33 attached to both ends of the chassis frame 32.
The body of the floor cross member 31 tends to move forward and upward in an unexpected event such as a collision. Therefore, since both ends of the floor cross member 31 are firmly connected and fixed to the outriggers 33,
Since the central portion thereof is deformed into a curved shape toward the front, the floor cross member 31 is provided at a position offset from the position of the frame cross member 36 of the chassis frame 32, as shown in FIG. Therefore, the problem has been dealt with by increasing the cross-sectional shape as shown in the figure or by increasing the thickness of the floor cross member 31.

(Means for solving the problem) However, with this conventional configuration, there are problems such as an increase in vehicle weight due to increasing the cross-sectional shape or thickening the plate thickness of the floor cross member 31. It was hot.

(Means for Solving the Problems) The present invention was made to solve the above-mentioned conventional problems, and it is possible to reduce the weight and prevent the deformation of the floor cross member due to the movement of the body. The purpose of this is to provide a floor cross member connection structure that can handle the above problems, and its gist is to connect the floor cross member attached to the body floor pan to the frame cross member attached to the chassis frame in a frame-equipped structural body. The outriggers installed on both sides of the frame cross member mounting section are connected and fixed at a predetermined interval via body mounts, and between both cross members are the outriggers that are installed on the floor cross member and inserted into the insertion holes of the frame cross member. The present invention relates to a connecting structure for floor cross members in which a connecting member is interposed at a lower end portion thereof and has a retaining means at a predetermined position in a hanging manner with respect to the insertion hole.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, 1 is a chassis frame, and a frame cross member 3 is attached to a predetermined location between the left and right side frames 2. Outriggers 4 having mounting holes 5 for mounting body floor pans 6 are mounted on both sides of the mounting portion in an overhanging manner.

6 is the mount rubber 2 in the mounting hole 5 of the outrigger 4.
body mount 2 consisting of 3 and bolt 24;
A body floor pan fixed by 2,
Floor cross members 7 are attached to required locations on the lower surface of the floor pan 6. The cross-sectional shape of this floor cross member 7 has a shallow groove 11 formed by a horizontal web 8, side pieces 9 rising from both edges of the web 8, and mounting pieces 10 extending horizontally from the upper end of this side piece 9 to the left and right. A plurality of reinforcing members 12 (in this example, two reinforcing members 12 are provided) are attached to required locations of the shallow groove 11. In addition, a mounting hole 13 that matches the mounting hole 5 of the outrigger 4 is provided near the left and right ends of the web 8, and a predetermined diameter hole 13 is provided approximately in the center of the web 8, through which the connecting bolt 18 of the connecting member 17 is inserted. A connecting hole 14 is provided through the hole 14, and a shallow groove 11 is formed in the hole 14.
A reinforcing plate 15 having a hole aligned with the hole 14 is attached along the inner surface of the plate. The floor cross member 7 provided in this way has its mounting holes 13 at both ends aligned with the mounting holes 5 of the outrigger 4, and is coupled and fixed by a body mount 22 consisting of a mount rubber 23 and a bolt 24, so that the frame cross member 3 is secured to the frame cross member 3. installed at a predetermined interval T above,
An insertion hole 16 having a predetermined diameter D is provided concentrically with the connection hole 14 in a substantially central portion of the frame cross member 3, and a connection member 17 is interposed between the connection hole 14 and the insertion hole 16. ing.

Reference numeral 17 denotes a connecting member, which is composed of a connecting bolt 18 having a predetermined length, a washer plate 19, a buffer member 20, and a collar member 21. The washer plate 19 has a diameter larger than the diameter D of the insertion hole 16. A hole 19a is formed in the center of the hole 19a to allow the connecting bolt 18 to pass therethrough. The buffer member 20 is made of, for example, natural rubber or urethane rubber, has a predetermined thickness, is formed to have approximately the same diameter as the washer plate 19, and has a hole 20a in the center thereof through which the collar member 21 is inserted. It is installed through. Further, the collar member 21 has a predetermined length L, is formed in a cylindrical shape through which the connecting bolt 18 can be inserted, and holds the buffer member 20 at a position separated from the web 3a of the frame cross member 3 by a predetermined distance T1. It is formed to have a length L. The washer plate 19, the collar member 21, and the buffer member 20 are sequentially inserted into the connecting bolt 18 formed in this way, and the connecting bolt 18 is inserted from below the insertion hole 16 of the frame cross member 3, and then the floor While being inserted into the connecting hole 14 of the cross member, the upper end surface of the collar member 21 is brought into contact with the lower surface of the web 8, and the buffer member 20 and washer plate 19 are suspended in a predetermined position by screwing the nut. It is held on record.

Next, the operation and effects of this embodiment configured as described above will be explained.

Now, in this embodiment, in a structural body with a frame, a floor cross member 7 attached to a body floor pan 6 is connected to a frame cross member 3 attached to a chassis frame 1, and the floor cross member 3 is attached to a frame cross member 3 attached to a chassis frame 1.
The outriggers 4 mounted on both sides of the mounting section are connected and fixed at a predetermined interval through the body mounts 22, and between both cross members 3 and 7 there are insertion holes for the frame cross member 3 which is mounted on the floor cross member. A linking member 17 is inserted into the insertion hole 16 and has a washer plate 19 and a buffer member 20 suspended at a predetermined position at the lower end thereof as means for preventing the insertion hole 16 from coming off. Therefore, under normal conditions, this connecting member 1
The connecting bolt 18 of No. 7 is vertically aligned with the insertion hole 16 having a large diameter D, and the collar member 21 externally fitted on the bolt is also vertically installed integrally without interfering with the insertion hole 16. has been done. Further, on the washer plate 19 fixed to the lower end of the connecting bolt 18 by a collar member 21, an interference member 20 is attached to the web 3a of the frame cross member 3.
They are placed at an interval T1. If, for example, a collision occurs in this state, the floor cross member 7 begins to deform due to the load at the time of the collision, and the insertion hole 1
The buffer member 20 provided with a diameter larger than the diameter D of the frame cross member 6 elastically contacts the frame cross member 3, and the subsequent collision load is dispersed to the chassis frame 1 side via the connecting member 17, and the shock absorber 20 is disposed on the floor cross member 7. deformation can be prevented.

By interposing the connecting member 17 between the floor cross member 7 and the frame cross member 3 in this way, the load in the event of a collision can be distributed to the chassis frame 1 side in cooperation with the frame cross member 3. It is possible to prevent the floor cross member 7 from deforming, and it is not necessary to increase the cross-sectional shape of the floor cross member or increase the thickness of the floor cross member as in the past, and the weight can be reduced.

In the above embodiment, the connecting member 17 is provided at one location approximately at the center of the floor cross member 7 and the frame cross member 3. However, the present invention is not limited to this, and a plurality of connecting members 17 may be provided at appropriate locations. It may be. Furthermore, the buffer member 20 exemplified in the above embodiment is provided for the purpose of reducing the noise caused by the metal touch and the collision load even if it comes into contact with the frame cross member 3 due to body bounce during normal running of the vehicle. , the same effect can be achieved even if the buffer member 20 is omitted.

(Effect of the invention) Now, in the present invention, in a structural body with a frame, the floor cross member attached to the body floor pan is attached to both sides of the frame cross member attached to the chassis frame and the attachment part of the frame cross member. The outriggers are connected and fixed at a predetermined interval above the outriggers via body mounts, and between both cross members are attached to the floor cross member and inserted into the insertion holes of the frame cross members, and the lower ends are provided to prevent them from coming off from the insertion holes. By using a structure in which a connecting member having a suspension-like means is interposed at a predetermined position, the load at the time of a collision can be distributed to the chassis frame side by the cooperation of the frame cross member, and the deformation of the floor cross member can be prevented. In addition, there is no need to increase the cross-sectional shape of the floor cross member or increase the thickness of the same plate as in the past, and it is possible to reduce the weight, so it can be used as a joint structure for floor cross members. This is an extremely practical idea.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of a body floor pan, Fig. 2 is an exploded perspective view of a floor cross member and a frame cross member, and Fig. 3 is an exploded perspective view of a floor cross member and a frame cross member.
The figure is a sectional view showing the state in which the connecting member is attached, and FIGS. 4 and 5 are conventional examples. DESCRIPTION OF SYMBOLS 1... Chassis frame, 3... Frame cross member, 6... Body floor pan, 7... Floor cross member, 16... Insertion hole, 17... Connecting member, 18... Connection bolt, 19... Washer Ya plate (retardant means), 21... Collar member, 2
2...Body mount.

Claims (1)

[Scope of utility model registration request] In a frame-equipped structural body, the floor cross member attached to the body floor pan is placed above the frame cross member attached to the chassis frame and the outriggers attached on both sides of the frame cross member attachment part via the body mount. A connection is provided between the two cross members, which is attached to the floor cross member, is inserted into the insertion hole of the frame cross member, and has a retaining means at a predetermined position at the lower end of the frame cross member. A floor cross member connection structure with intervening members.