JPH0116703Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is intended for cooling water piping, etc. that connects the engine and radiator in a hollow side frame made of sheet metal that constitutes a part of the body frame of an automobile. The present invention relates to a device for attaching pipe members used.

[Conventional technology and its problems]

In order to reduce weight and cost, the body frames of recent automobiles have a pair of left and right hollow side frames and a hollow cross frame that connects the two side frames, each of which has an upwardly U-shaped cross section. It is well known that both are made of press-formed sheet metal.

After the sheet metal body frame is press-formed, various parts such as the floor panel or cover plate are spot welded to the upper surface, and then an electrodeposition liquid is applied as an undercoat to the entire surface. Since it is immersed in an electrodeposited liquid tank, when installing pipe members used for cooling water piping connecting the engine and radiator into the side frames of this sheet metal vehicle body frame,
The installation work of the pipe member is easy, and the electrodeposition liquid can flow into the pipe member when immersed in the electrodeposition liquid, while the electrodeposition inside the pipe member is prevented when the vehicle body frame is pulled up from the electrodeposition liquid. It must be possible for all the liquid to flow out, and the pipe members installed in the hollow side frame will not adhere to the side frame due to twisting in the side frame and the difference in thermal expansion between the two. There was a problem in that the structure had to be constructed so that the pipe member would not come off or the pipe member would not undergo plastic deformation.

The object of the present invention is to solve the above-mentioned problem when a pipe member is attached to a hollow side frame of a sheet metal vehicle body frame.

[Means to solve the problem]

For this reason, the present invention provides an automobile in which a side frame made of sheet metal in a vehicle body frame is formed with an upwardly U-shaped cross section, in which a pipe member extending in the longitudinal direction of the side frame is inserted into the side frame, and one end of the pipe member is inserted into the side frame. is bent upward and protrudes outside the side frame from a cover plate welded to the upper surface of the side frame, while the other end of the pipe member is bent sideways and is bored into the side plate of the side frame. protrudes outside the side frame from the hole,
One end of the pipe member protruding from the cover plate is welded and fixed to the cover plate, while a plate member that contacts the inner surface of the side plate of the side frame is welded to the other end of the pipe member, and the upper end of the plate member is fixed to the cover plate. Only that part is welded to the side plate of the side frame.

[Functions and effects of the idea]

In this way, when installing a pipe member in a side frame with an upward U-shaped cross section so that both ends protrude outside the side frame, if both ends of the pipe member are bent upward, the pipe member By fixing the lid to the side frame before it is welded to the top surface of the side frame, installation inside the side frame becomes easier, but when the body frame is being transported while being supported horizontally on the transport conveyor line. There is a problem in that the electrodeposition liquid that enters the pipe member when immersed in the electrodeposition liquid remains in the pipe member even if the vehicle body frame is pulled up from the electrodeposition liquid.
If both ends of the pipe member are bent sideways, the electrodeposition liquid can easily flow into and out of the pipe member when immersed in the electrodeposited liquid and withdrawn from the electrodeposition liquid, but at the same time, the electrodeposited liquid can easily flow into and out of the pipe member when it is immersed in the electrodeposited liquid and withdrawn from the electrodeposited liquid. Both ends bent sideways during insertion obstruct the insertion of the pipe member into the side frame, so there is a problem in that it takes time to attach and secure the pipe member to the side frame. If the pipe is bent, the pipe member can be easily installed and fixed in the side frame, but when the body frame is immersed in the electrodeposition liquid, the air inside the pipe member cannot escape and the electrodeposition liquid does not leak into the pipe. Since it does not enter the member, there is a problem that the electrodepositing liquid cannot be applied to the inner surface of the pipe member.

On the other hand, in the present invention, one end of the pipe member inserted into the side frame as described above is bent upward and protrudes outside the side frame from the cover plate welded to the upper surface of the side frame. The other end of the pipe member is bent sideways to protrude outside the side frame through a large diameter hole drilled in the side plate of the side frame, and one end of the pipe member protruding from the cover plate is welded and fixed to the cover plate, A plate member that contacts the inner surface of the side plate of the side frame is welded to the other end of the pipe member, and only the upper end portion of the plate member is welded to the side plate of the side frame. A cover plate on one end,
A plate member is welded and fixed to the other end of each pipe member, and the other end of the pipe member is fitted into a large diameter hole in the side plate of the side frame, and then inserted into the side frame, and then the cover plate and the plate member are inserted into the side frame. Since all that is required is to weld and secure the pipe member to the side frame, it is extremely simple and easy to install and secure the pipe member into the side frame. and
When the car body frame is immersed in the electrodeposition liquid, air escapes from one end that bends upward, and the electrodeposition liquid flows in from the other sideward end, while when the car body frame is pulled up from the electrodeposition liquid. All of the electrodeposited liquid inside the pipe member flows out from the other horizontal end.

Moreover, when the other end of the pipe member is welded to the side frame via the plate member welded to the other end, only the upper end portion of the plate member is welded to the side frame. In other words, even if one end of the pipe member in the side frame is fixed to the side frame via the cover plate, the other end of the pipe member is held in a suspended state via the plate member, so the side frame The transmission of torsional strain to the internal pipe member can be reduced by the elastic deformation of the plate member, and the difference in thermal expansion between the side frame and the pipe member can be reduced by the elastic deformation of the plate member. It can be absorbed.

Therefore, according to the present invention, when a pipe member used for cooling water outlet piping from an engine to a radiator is installed in a side frame that constitutes a part of the body frame of an automobile, the electrodeposition liquid is not applied to the body frame. Although the electrodeposition liquid can be applied to the inner and outer surfaces of the pipe member at the same time as the application, the pipe member can be easily installed and fixed in the side frame of the vehicle body frame, and the installation and fixation can improve workability. This has the effect of reliably preventing the fixation of the pipe member to the side frame from coming off or plastic deformation of the pipe member due to twisting in the side frame and the influence of the difference in thermal expansion between the two.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is a body frame of an automobile, and the body frame 1 includes a pair of left and right hollow side frames 2, 2 extending in the longitudinal direction of the automobile, and both side frames. The side frames 2, 2 and the cross frames 3, 4 are both made of sheet metal and have an upwardly U-shaped cross section. formed, and both side frames 2,
A front bumper 5 is attached to the front end of 2.

A floor panel 9 constituting the floor of the cabin 6 that surrounds the driver seat 7 and the passenger seat 8 is attached to the front upper surface of both side frames 2, 2 in the vehicle body frame 1. A floor tunnel 10 recessed upward is formed between the passenger seat 7 and the passenger seat 8.

Reference numeral 11 in the figure indicates a water-cooled engine located at the rear of the floor panel 9;
1 has a transmission transmission transmission 12 attached to its rear surface, and is connected via a rear cross frame 4 that connects both side frames 2, 2, and an engine support frame 13 mounted between both side frames 2, 2. The cooling water outlet 14 of the engine 11 is located at the same height as the floor panel 9 or at a height similar to this with respect to the rear surface of the engine 11. It is provided.

Reference numeral 15 in the figure indicates a radiator with a fan (not shown) located at the front lower part of the floor panel 9, and the upper tank 16 of the radiator 15 is located at a higher position than the cooling water outlet 14 of the engine 11. In addition, the lower tank 17 forms an approach line 19 connecting the lower surface of the front bumper 5 and the outer peripheral surface of the front wheel 18.
It is installed at a height that is located higher up,
The cooling air after passing through this radiator 15 is
It is designed to blow through rearward from the lower surface of the floor panel 9 and the inside of the floor tunnel 10. Note that a filler neck (not shown) with a filler cap is provided on the upper surface of the upper tank 16.

Lower tank 17 in the radiator 15
and a cooling water inlet 21 to a cooling water pump 20 attached to the front surface of the engine 11 are connected via a cooling water supply pipe 22 arranged on the lower surface side of the floor panel 9.
A cooling water outlet pipe 2 connecting the upper tank 16 in the engine 11 and the outlet 14 in the engine 11
3 and 2 connected to each other by a rubber tube 23c.
Two metal pipe members 23a and 23b, a rubber pipe part 23d for connecting one metal pipe member 23a to the cooling water outlet 14, and a rubber pipe part 23e for connecting the other metal pipe member 23b to the upper tank 16. composed of
The one metal pipe member 23a is attached to the left side frame 2 of the both side frames 2, 2.
Placed within.

Then, one end 23a' of the pipe member 23a disposed inside the left side frame 2 is bent upward to protrude outside the side frame 2 from the lid plate 24 spot welded to the upper surface of the side frame 2. Two places 25a, 25 with respect to the plate 24
While fixed by welding in b,
The other end 23a'' of the pipe member 23a is bent sideways and then protrudes outside the side frame 2 from a large diameter hole 2b bored in the side plate 2a of the side frame 2. A flange-shaped plate member 26 in contact with the inner surface of the side plate 2a of the frame 2 is fixed by welding at two locations 27a and 27b, and the plate member 26
to the side plate 2a of the side frame 2 at two locations 28a, 28 at the upper end of the plate member 26.
It is fixed by spot welding in b.

Note that the reference numeral 29 in the figure indicates a cover plate that is spot-welded to the upper surface of the side frame 2 near the other end 23a'' of the pipe member 23a.

In this case, a cover plate 24 and a plate member 26 are welded and fixed to predetermined locations on the pipe member 23a installed in the side frame 2, and the other side end 23a'' of this pipe member 23a is attached to the side frame 2. After fitting it into the large diameter hole 2b in 2, insert it into the side frame 2, and then insert it into the lid plate 2.
4 to the side frame 2, and the upper end of the plate member 26 to the side plate 2a of the side frame 2.
The pipe member 23a can be attached and fixed inside the side frame 2.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the automobile, Fig. 2 is a partially cutaway perspective view with the cabin removed, Fig. 3 is a side view with the cabin removed, and Fig. 4 is a side view of the automobile. The figure is a plan view of FIG. 3, FIG. 5 is an enlarged view of the main part of FIG. 4, FIG. 6 is a cross-sectional view of FIG. 5, and FIG. 8
The figure is an enlarged sectional view of Fig. 6, and Fig. 9 is an enlarged sectional view of Fig. 7.
Figure 10 is a cross-sectional view of Figure 8.
The cross-sectional view and FIG. 11 are perspective views when disassembled. 2... Side frame, 3, 4... Cross frame, 5... Front bumper, 6... Cabin, 9... Floor panel, 10... Floor tunnel, 11... Engine, 14... Cooling water outlet, 15... ...Radiator, 16...Upper tank, 17...Lower tank, 20...Cooling water pump, 21...Cooling water inlet, 22...
Cooling water supply piping, 23...Cooling water outlet piping, 23
a... Pipe member, 24... Lid plate, 2a... Side plate of side frame, 2b... Large diameter hole, 26...
Plate members, 28a, 28b... welding locations.

Claims (1)

[Scope of utility model registration request] In an automobile in which a side frame made of sheet metal in a vehicle body frame is formed into an upwardly U-shaped cross section, a pipe member extending in the longitudinal direction of the side frame is inserted into the side frame, and one end of the pipe member is bent upward. The pipe member protrudes outside the side frame from a cover plate welded to the upper surface of the side frame, while the other end of the pipe member is bent sideways to allow the pipe member to protrude outside the side frame through a large diameter hole drilled in the side plate of the side frame. One end of a pipe member that protrudes from the cover plate is welded and fixed to the cover plate, while a plate member that comes into contact with the inner surface of the side plate of the side frame is welded and fixed to the other end of the pipe member. A device for mounting a pipe member into a side frame of an automobile, characterized in that only the upper end portion of the member is welded to the side plate of the side frame.