JPH0455910B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a frame structure for a vehicle or the like constructed from plate members, and a method for manufacturing the same.

[Conventional technology]

Conventionally, for box-like structures, for example,
60-99032 has been disclosed. Regarding this box-like structure, the 14th
An overview will be given with reference to the figure. Cylindrical body 50 with a rectangular cross section
Both sides of the tube are cut as shown by solid lines and dotted lines, and the cylindrical body 50 is cut into a pair of channels 5 having a U-shaped cross section.
Divide into 1,52. As a result, a protrusion 53 is formed on one edge and a recess 54 is formed on the other edge. The convex portion 53 of one channel 51 is bent inward to form a convex pawl, and the convex pawl is aligned with the concave portion 54 of the other channel 52 and overlapped to fit each other. This fitted portion is welded to form a box-like structure.

Furthermore, Japanese Utility Model Application Publication No. 58-30572 discloses an automobile chassis frame. This will be outlined with reference to FIG. Regarding this automobile chassis frame 60, the side rail 6
1 and 62 and a cross member 63 arranged between these side rails 61 and 62, the chassis frame 60 is formed into a two-part structure into an upper part and a lower part, and the side rail part and the cross member in both the upper and lower parts are divided into two parts. The member portion 63 is formed by integral molding, and the upper and lower portions, which are molded in the same manner, are joined to each other to form the chassis frame. Also. An opening 64 is formed between the upper and lower parts.

[Problem that the invention seeks to solve]

However, the box-like structure described in the above-mentioned Utility Model Publication No. 60-99032 has channels 51 and 52.
The structure has different shapes on both sides, and does not have a lightweight member and a working opening, nor does it have a mounting hole. Also,
Although the automobile chassis frame described in the above-mentioned Japanese Utility Model Publication No. 58-30572 is equipped with an opening 64, it is not intended to standardize parts, and the structure is complex, so there are no problems. have. Furthermore, it is generally very inefficient to drill the necessary holes in the frame or subframe after the vehicle is completed. When moving the installed equipment part or attaching another part, the necessary mounting holes may not be present in the frame, etc., or may interfere with holes that have been previously drilled, or there may be a problem with the required mounting holes. If the side member has vertical bends or widthwise bends, the device parts to be installed cannot be installed without modification or newly manufactured device parts. As a result, there is little compatibility in mounting the mounting device parts for each vehicle model, resulting in a large inventory of service parts. Moreover, in the conventional box-shaped cross-section frame, the workability of attaching device parts is poor due to the use of welding brackets, welding nuts, etc., and the conventional box-shaped cross-section vehicle frame structure has various problems.

An object of the present invention is to solve the above-mentioned problems, and to provide a frame structure for a vehicle, etc., which is extremely easy to manufacture, has a hollow cross section, and has high torsional rigidity, and which can be easily manufactured using bolts and nuts. Various equipment parts can be attached using rivets, etc., and the mounting holes are standardized to ensure compatibility of the mounting equipment parts, reducing the inventory of service parts and saving labor in design and production. In addition to reducing costs and making investments common across vehicle models, it is possible to promote investment depreciation by reusing frame members for construction purposes, systematize manufacturing, assembly, etc., and further reduce weight. An object of the present invention is to provide a frame structure for a vehicle, etc., which can improve performance by reducing weight, absorb energy at the time of a collision by having an opening for weight reduction, and improve safety, and a method for manufacturing the same. .

[Means for solving problems]

In order to solve the above problems and achieve the above objects, the present invention is configured as follows. That is, the first invention of this application combines a plurality of channel members made of plate members having peaks and valleys on both sides that extend at substantially the same pitch, and fixes the peaks of each channel member to each other. Regarding the frame structure of a vehicle or the like, which is characterized in that, to be more specifically detailed, the mountain portions and the valley portions on both side surfaces of the channel member are opposed to each other, and the valley portions are lightweight and workable. The present invention relates to a frame structure for a vehicle or the like, characterized in that the mountain part has an opening for mounting a device, a mounting hole is formed in the mountain part for mounting a device component, and the frame structure can be fixed to each other via a member such as a cross member.

Further, the second invention of this application is to cut a plate member into an uneven shape having peaks and valleys extending at substantially the same pitch, and to form a channel member by bending the cut plate member. Next, regarding the manufacturing method of a frame structure for a vehicle, etc., characterized in that a plurality of the channel members are combined and the mountain portions are fixed to each other. A positioning pin of a forming machine such as a cutting machine or a bending machine can be fitted into the tooling hole, and the peak part and the valley part are cut in the same shape and parallel to each other, and The plate member is bent parallel to the longitudinal direction of the cut plate member, and mounting holes are drilled at the same intervals in the mountain portions before or during cutting of the plate member, and the plate member is further formed with the mountain portions on both sides of the channel member. The present invention relates to a method of manufacturing a frame structure for a vehicle or the like, characterized in that the peak portions of the two channel members are fixed to each other so that the valley portions face each other.

[Effect]

The present invention is configured as described above and has the following effects. That is, the frame structure of this vehicle, etc. is constructed by combining a plurality of channel members made of plate members with peaks and valleys on both sides that extend at substantially the same pitch, and fixing the peaks to each other. , the torsional rigidity is high, the various frame members constituting the vehicle body can be shared or standardized, and the ridges and troughs on both sides of the channel member face each other, In addition, since the valley portion forms an opening for weight reduction and work, various equipment parts can be easily attached using bolts, nuts, rivets, etc., and performance can be improved due to weight reduction. It can absorb energy at the time of a collision, and since mounting holes are formed in the mountain portion for attaching device parts, it is possible to fix frame structures of multiple vehicles to each other via members such as cross members. , can be easily attached to various frame members, etc.

Furthermore, the method for manufacturing frame structures for vehicles, etc.
A plate member is cut into uneven shapes with peaks and valleys extending at substantially the same pitch, the cut plate member is bent to form a channel member, and then a plurality of channel members are combined to form the peaks. Since they are fixed to each other, it is extremely easy to manufacture, and it is possible to reduce waste of material when cutting from plate members, and moreover, it is possible to use common molding machines such as cutting machine molds and bending machine molds. It can be simplified. Further, a tooling hole is pre-formed in the plate member, and a positioning pin of a forming machine such as a cutting machine or a bending machine can be fitted into the tooling hole, so that cutting and bending can be performed with extremely high precision. It can be molded, and the cutting and bending dimensions can be easily changed by changing the position of the tooling hole, and the mounting hole can be drilled accurately and reliably.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a frame structure for a vehicle or the like according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a vehicle frame structure 10 which is a basic box-shaped cross-section vehicle frame structure when the frame structure for a vehicle or the like according to the present invention is applied to a vehicle. This vehicle frame structure 1
0 is a channel member 2 having the same shape and size.
are constructed by fixing them together.
This channel member 2 has a U-shaped cross section, and has a top or peak 3 and a bottom or trough 4 sequentially formed so as to constitute a protrusion 11 at the end thereof. These peaks 3 and valleys 4 extend parallel to the longitudinal direction, and by fixing the peaks 3 of the channel member 2 to each other by welding or the like, the cross section is hollow, that is, box-shaped (square in the figure). structure is formed. Reference numeral 8 indicates a welded portion. The vehicle frame structure 10 has an opening 9 and a mounting hole 5 formed on opposing surfaces. In other words, the peaks 3 and the valleys 4 face each other, and the openings 9 are formed between the valleys 4 and 4,
A plurality of attachment holes 5 are formed in the mountain portion 3.
The openings 9 and the attachment holes 5 are alternately formed in a line in the longitudinal direction, and the openings 9 and the attachment holes 5 are alternately located so as to face each other on opposing surfaces. The opening 9 serves to reduce the weight of the channel member 2 itself, that is, the vehicle frame structure, and also serves as a working function for welding the channel member 2 and the like. It is provided. The mounting holes 5 function as holes through which bolts, rivets, etc. are passed in order to attach device parts to the vehicle frame structure 10, and multiple vehicle frame structures can be attached thereto. can also be attached to various other frame members.

In FIG. 2, an example in which the channel member 2 is formed from a single plate member 20 is shown. One plate member 20 is cut along a keystone line, that is, a line 6 shown as a solid line, to form a cut plate member. In other words, one plate member 20 is cut into a waveform in which the peaks 3 and troughs 4 extend parallel to the axis, that is, the longitudinal direction, and have the same shape at regular intervals, that is, at a constant pitch, so that the protrusions 11 are formed. Cut along the line to form a cut plate member. That is, the length L ₁ of the peak portion 3 and the length L ₂ of the trough portion 4 are formed to be the same length. As a result, all the peaks 3 are formed to have the same length _L1 . Further, both end portions, that is, both side surfaces of the plate member 20 are configured such that the peak portions 3 and the valley portions 4 are opposed to each other, and the plate member 20 is cut to have the same width at all positions. .
Furthermore, a plurality of (two in the figure) mounting holes 5 are bored in the protrusion 11 . The cut plate member thus cut along the keystone-like line, ie, the solid line, ie, the cutting line 6, is bent approximately 90 degrees along the longitudinal chain line 7 to form the channel member 2. Bending of the cut plate member can be achieved by using a bending machine such as a press or a roll, which will be described later. A plurality of channel members 2 (2 in Fig. 1)
2) They are combined to form a box-shaped cross section, that is, a hollow shape, and the ridges 3, 3 of the opposing channel members 2 are fixed to each other by welding or the like. As a result, an opening 9 is formed at a portion of the channel member 2 where the valley portion 4 faces. Furthermore, the two attachment holes 5 formed in the protruding portion 11 of the channel member 2 are formed to face each other, so that four attachment holes 5 are formed in one place. The keystone-like pattern thus formed is repeated at a constant pitch, and the channel member 2 made of this keystone-like pattern is guaranteed to be compatible with respect to attachment. When the channel member 2 is formed by bending the cutting plate member along the chain line 7 shown in FIG. 2, W becomes the width and H becomes the height. Therefore, if the pitch of the keystone pattern is constant, that is, the lengths L ₁ and L ₂ of the peaks 3 and valleys 4 that are formed sequentially are constant, the width W and height H of the channel member 2 are constant. Even if the channel members 2 change, the channel members 2 can be fixed to each other by welding or the like, without requiring a separate mold for the new material. In addition, since the channel member 2 is fixed by welding on the neutral axis of the hollow section, the stress applied to the welded part of the channel member 2 is small, and the strength of the channel member 2, that is, the frame structure 10 of a vehicle etc. is reduced. It's advantageous.

In FIG. 3, another shape of a frame structure of a vehicle or the like is shown. Regarding the frame structure 30 of this vehicle, etc., a single plate member is cut in a keystone-like pattern as shown in FIG. form. Four channel members 12 are used to construct a frame structure 30 for a vehicle or the like having a rectangular cross section. The openings 9 formed in the frame structure 30 of a vehicle etc. are formed on each surface, and the openings 9 on opposing surfaces are formed at mutually opposing positions, and the openings 9 on adjacent surfaces are arranged in an alternating or staggered manner. It is located in The mounting hole 5 is also arranged in the same position as the opening 9.

In FIG. 4, a plate member 20 for forming another structure of a frame structure of a vehicle or the like is shown. The plate member 20 constituting the frame structure of this vehicle etc. is almost the same as the plate member 20 shown in FIG. They are different in that they are Furthermore, regarding the peak portions 3 and valley portions 4 of this cutting plate member, see FIGS. 1 and 2.
The shapes of the parallel cutting lines of the peaks 3 and troughs 4 of the cutting plate member shown in the figure are slightly different. That is, the peaks 3 and troughs 4 of this cutting plate member are cut along smooth curves. The other shapes are the same in both cases, so explanations will be omitted.

In FIG. 5, a cutting plate member is cut from the plate member 20 shown in FIG. An example of a frame structure 40 is shown. The two channel members 45 have fixing holes 4 drilled in the mountain portion 3.
7 and are fixed to each other through rivets 46. In the figure, the channel member 45 has a rivet 46.
However, it goes without saying that they may be fixed to each other by spot welding or the like instead of rivets.

In FIGS. 6, 7, and 8, an example is shown in which the channel members 2, 45 are fixed to each other. The channel members 2, 45 shown in FIG. 6 have the same length on both sides,
The channel members 2 and 45 shown in FIG. 7 have different lengths on both sides. In either case, the end faces of both sides are in contact and fixed by welding or the like. The channel members 4, 45 shown in FIG. 8 are equivalent to the cross section shown in FIG. 5.

Although various shapes of the channel member have been exemplified above, the shape of the channel member is not necessarily limited to the above-mentioned shape, and it goes without saying that it may be formed as follows. That is,
Although not shown, for example, a channel member may be formed by bending the central part of a cut plate member up to about 60 degrees along the longitudinal direction, and three of these channel members may be used to form a triangular shape. It can also be configured as Furthermore, when cutting the cutting plate member from the plate member, it is of course possible to cut the plate member with the peaks facing each other and with the troughs facing each other. In that case, it goes without saying that the size etc. may be determined in consideration of the strength etc. of the channel member.

FIG. 9 shows an example in which the basic frame structure 10 for a vehicle or the like shown in FIG. 1 according to the present invention is configured as a truss. Channel member 2
A frame structure 10 for a vehicle etc. constructed by
are fixed to each other by a plurality of angle members 13. Fixing means 14 such as bolts and rivets are passed through the mounting hole 5 provided in the frame structure 10 of the vehicle and the mounting hole 15 formed in the angle member 13, and the channel of the frame structure 10 of the vehicle etc. An angle member 13 is fixed to member 2. Such a truss structure can be used for beams, etc.

Next, the method for manufacturing frame structures 10, 30, 40 for vehicles etc. according to the present invention will be described in the 10th article.
This will be explained with reference to FIGS. 11, 12, and 13.

In FIG. 10, a plate member 20 is shown to explain an example of the method of manufacturing a frame structure for a vehicle or the like according to the present invention. In this manufacturing method, a case is shown in which the process of cutting the plate member 20, that is, the process of punching, and the process of drilling the attachment holes 5 are performed simultaneously. First, the tooling hole 42 is drilled in the plate member 20 in advance. This tooling hole 42 functions as a means for positioning when performing the punching process along the cutting line 6 and the drilling process of the attachment hole 5. That is, the positioning pin 33 provided on the cutting machine
(see FIG. 12) is fitted into the tooling hole 42 formed in the plate member 20 to ensure accuracy. After performing the punching process along the cutting line 6 and the drilling process for the attachment holes 5 on the plate member 20,
In order to perform the next punching process and punching process, the plate member 20 is moved in the direction shown by the arrow. In this manufacturing method, it goes without saying that the distance L between the tooling holes 42 can be changed as appropriate depending on the size of the frame structure of the vehicle or the like. Moreover, the distance l between the tooling hole 42 and the center position of the peak part 41 (in other words, the center position of the valley part 49) can be easily changed by changing the installation position of the pin provided on the cutting machine. can do. After the plate member 20 is installed in a cutting machine, the plate member 20 is cut into an uneven shape having peaks 41 and valleys 49 extending at substantially the same pitch to form a cut plate member. Next, for example, using a bending machine to be described later, the cut plate member is bent along the chain line to form a channel member. In this bending process, the tooling hole 42 can serve as a positioner for the cutting plate member. Finally, a plurality of these channel members are combined and the mountain portion 4 is
1 are fixed together by welding, rivets, etc.
Through such a manufacturing process, Fig. 1, Fig. 3,
It is possible to form a frame structure for a vehicle or the like as shown in FIG. 5, or FIGS. 6, 7, and 8.

In FIG. 11, a plate member 20 is shown to explain another example of the method of manufacturing frame structures 10, 30, 40 for vehicles, etc. according to the present invention.
In this manufacturing method, a case is shown in which the process of drilling the tooling holes 42 and the process of drilling the attachment holes 5 are performed simultaneously on the plate member 20, and then the process of punching the plate member 20 is performed. The other steps are the same as those described with reference to FIG. 9, so the explanation of the same manufacturing steps will be omitted.

In FIGS. 12 and 13, the bending machine 39
An example of forming a cutting plate member by is shown. FIG. 12 shows the cutting plate member before forming, and the first
Figure 3 shows the cutting plate member after being formed. The bending machine 39 includes a U-shaped die base 31 and a pair of dies 34 disposed oppositely within the die base 31. The die base 31 has an upwardly protruding mounting portion 3.
8, and this mounting portion 38 is attached to the die base 3.
It extends in the longitudinal direction of 1. Each die 34 is attached to a mounting portion 38 of the die base 31 with a fixing bolt 35 via a shim 36. Furthermore, a fitting hole 37 is formed in the die base 31, into which a positioning pin 33 of the punch 32 can fit. The distance or spacing between the dies 34 is adjusted by the thickness of the shim 36 interposed between the dies 34 and the mounting portion 38. In order to bend the plate member 20 cut to a predetermined length, that is, the cut plate member, to form a predetermined channel member, a die 34 is set on the die base 31, and as shown in FIG. A cutting plate member is placed on the die base 31. Next, the positioning pin 33 of the punch 32 is fitted into the tooling hole 42 of the cutting plate member, and in this state, the punch 32 is lowered in the direction shown by the arrow. The positioning punch of punch 32 is
As shown in FIG. 13, it does not fit into the fitting hole 37 of the die base 31 and interfere with molding. In this forming process, the settings of the die base 31 and the die 34 are determined by the shim 36 depending on the thickness of the cutting plate member that will become the channel member, that is, the material.
Adjust the thickness. Further, the positioning pin 33 of the punch 32 fits into the tooling hole 42 of the cutting plate member to prevent displacement during pressing.
The thickness of the shim 36 can be changed by changing the lengths L and l of the cutting plate member and the width W of the punch 32 when cutting the cutting plate member from the plate member. Therefore, according to the above folding machine,
Even if the size of the cutting plate member or the shape of the channel member changes, there is no need to change expensive blank molds, such as dies, die bases, etc., and it is possible to respond to changes in the size of the cutting plate member or the shape of the channel member. Can be done. In general, blank molds are expensive because they require a good blade clearance and precision for cutting the plate. However, punches, dies, etc. have straight shapes, are easy to cut, and are usually less than half the cost of blank molds.

Frame structure 10 for vehicles etc. according to the present invention,
30 and 40 are configured as described above, and although not shown, they can be used in the following manner.

Vehicle size, e.g. 3-4 ton vehicle, 1.5-
Although the cross-sectional size of the frame differs depending on the loading capacity of a 2-ton vehicle, a 0.75-1 ton vehicle, etc., it is possible to standardize the frame to accommodate these differences. That is, the size of the frame can be changed depending on the size of the vehicle. Alternatively, this can be achieved by changing the size of the frame depending on which parts of the vehicle receive a large load and which parts receive a small load. Moreover, if the pitches of the corrugations are formed to be the same, frames of different sizes can be fixed to each other by welding or the like. In addition, when the cross-sectional sizes are different, the blank shape can be made the same and the feed width can be changed.
It is possible to respond to changes in cross-sectional size, use expensive blank molds in common, and reduce investment. Furthermore, by keeping the punch shape the same and changing the stroke of the press, it is possible to accommodate changes in the height of the frame, that is, the height of the side members, and it is possible to reduce investment.

Frame structures 10, 30, 40 of this vehicle, etc.
can also be applied to the front suspension. A side member of a frame structure of a vehicle or the like is fixed to a subframe to which a front suspension is attached using bolts, nuts, or rivets. During the manufacturing process, parts necessary for mounting the suspension to the subframe, such as bracket lower links, cross member engine mounts, rebound rubber brackets, bump rubber brackets, cross member strut bars, and bracket engine mounts, are welded, etc. By fixing these parts in place and setting the positions of these parts accurately using sub-jigs, the work on the main jig can be reduced and the production line can run smoothly. Then, bolt and attach the equipment parts to the subframe.
It can be fixed with nuts, rivets, etc.

Moreover, frame structures 10 and 3 of this vehicle etc.
0.40 can also be applied to the rear suspension. The side members of frame structures of vehicles, etc. are fixed by bolts, nuts, rivets, etc. to cross members made of pipes, etc., and these cross members have brackets at both ends of the pipes, etc., and are attached to the brackets. A hole is formed. Spring brackets are provided at both ends of the cross member, and cross member brackets for receiving the side members are provided inside the spring brackets. The cross member is placed through the underside of the frame of a frame structure such as a vehicle without penetrating it, and when the side members of the frame are placed on the cross member bracket and fixed with bolts or rivets, the frame is assembled. The width is determined,
It can be assembled without the need for large-scale jigs.
In addition, the cross member becomes a strength member that receives the force of the bump rubber, and the side members of the frame are sandwiched between the flange provided at the end of the bump rubber and the bump rubber bracket, and fixed with bolts, etc., and attached to the bump rubber bracket. It can be constructed so that the applied force can be smoothly transmitted to the cross member. Furthermore, as long as the dimensions of the cross member at the rear of the rear suspension are accurately determined using the sub jig, the main jig may be simple.

Further, when applied to a front suspension, by shifting the waveform of the side member in the frame of a frame structure of a vehicle, etc., it can be applied to a full cab over vehicle, a semi cab over vehicle, etc. Furthermore, it can be applied to cases where the mounting width of the spring and the tread of the axle are different.

Furthermore, the frame structure of a vehicle or the like according to the present invention can be easily applied to various vehicle types, such as a wagon body, a cabless aluminum van, a conventional cab, a steel shed-style double cab, etc. Moreover, the frame structure for a vehicle or the like according to the present invention can be used not only as a seat member but also as a frame for a box-shaped body.
Further, it goes without saying that the frame structure of a vehicle or the like according to the present invention can be applied to a frame structure such as an architectural structure.

〔Effect of the invention〕

The present invention is configured as described above, and has the following effects. That is, the frame structure of this vehicle, etc. is constructed by combining a plurality of channel members made of plate members with peaks and valleys on both sides that extend at substantially the same pitch, and fixing the peaks to each other. , the torsional rigidity is high, the various frame members that make up the vehicle body can be shared or standardized, and the mounting equipment parts can be made interchangeable, thereby reducing the inventory of service parts. This makes it possible to save labor in design and manufacturing, to standardize equipment between different vehicle models, to reduce investment costs, and to systematize manufacturing, assembly, etc. In addition, frame structures such as vehicles can also be used as architectural structures. Moreover, since the peaks and valleys on both sides of the channel member face each other, and the valleys form an opening for weight reduction and work, various bolts, nuts, rivets, etc. The device parts can be easily attached, the performance can be improved by reducing the weight, and the opening for reducing the weight can absorb energy in the event of a collision and improve safety. Furthermore, since mounting holes are formed in the mountain portions for mounting device parts, it is possible to fix a plurality of frame structures to each other via members such as cross members equipped with mounting holes, etc., and also to attach various frame members. It can be easily mounted on a vehicle, etc., the mounting holes can be formed extremely easily, various device parts can be mounted in appropriate locations, and it can be configured into various frame structures, making it easy to use. The range can be extremely wide, the mounting holes can be standardized, and the parts of the device can be interchanged.

Furthermore, the method for manufacturing frame structures for vehicles, etc.
A plate member is cut into an uneven shape having peaks and valleys extending at substantially the same pitch, the cut plate member is bent to form a channel member, and then a plurality of channel members are combined to form the peaks. Since the parts are fixed to each other, manufacturing is extremely easy, material can be used effectively, and the amount of scrap that is discarded or wasted is extremely reduced, making it possible to use the material effectively and reducing the material cost. Moreover, the molding machines such as the cutting machine mold and the bending machine mold can be made common and simplified. Further, a tooling hole is pre-formed in the plate member, and a positioning pin of a forming machine such as a cutting machine or a bending machine can be fitted into the tooling hole, so that cutting and bending can be performed with extremely high precision. It can be molded, cutting dimensions and bending dimensions can be easily changed by changing the position of the tooling hole, and mounting holes can be drilled accurately and reliably.
It has various effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the basic structure of a frame structure for a vehicle etc. according to the present invention, and FIG.
3 is a perspective view showing another structure of the frame structure of a vehicle, etc. according to the present invention; and FIG. FIG. 5 is a plan view showing the material forming the frame structure; FIG. 5 is a perspective view showing still another structure of the frame structure for a vehicle or the like according to the present invention;
7 and 8 are cross-sectional views showing various cross sections of the frame structure of a vehicle etc. according to the present invention, and FIG.
The figure is a perspective view showing an example of connecting the vehicle frame structures shown in FIG. 1, FIGS. 12 and 13 are cross-sectional views showing a bending machine used to achieve the method for manufacturing frame structures of vehicles, etc., and FIG. 14 is a perspective view showing materials for conventional box-shaped structures, and 1st
FIG. 5 is a perspective view showing a part of the automobile chassis frame. 2, 12, 45... Channel member, 3, 41
... Mountain part, 4, 49 ... Valley part, 5, 15 ... Mounting hole, 6 ... Cutting line, 7 ... Chain line (bending line), 8
...Welded part, 9... Opening, 10, 30, 40...
...Frame structure of vehicle etc., 11...Protrusion part, 1
3... Angle member, 14... Fixing means such as bolts, 42... Tooling hole, 46... Rivet,
47...Fixing hole.

Claims (1)

[Scope of Claims] 1. A frame for a vehicle, etc., characterized in that a plurality of channel members each having peaks and valleys extending at substantially the same pitch on both sides are combined, and the peaks are fixed to each other. Structure. 2. A frame structure for a vehicle or the like as set forth in claim 1, wherein the peak portion and the valley portion on both side surfaces of the channel member are opposed to each other. 3. A frame structure for a vehicle or the like as set forth in claim 1, wherein the valley portion forms an opening for weight reduction and work. 4. A frame structure for a vehicle or the like as set forth in claim 1, wherein a mounting hole for mounting a device component is formed in the mountain portion. 5. A frame structure for a vehicle or the like as set forth in claim 1, which can be fixed to each other via members such as cross members. 6 Cut a plate member into an uneven shape having peaks and valleys extending at substantially the same pitch, bend the cut plate member to form a channel member, and then combine a plurality of the channel members to form the channel member. A method for manufacturing a frame structure for a vehicle, etc., characterized in that peak parts are fixed to each other. 7. The method of manufacturing a frame structure for a vehicle or the like as set forth in claim 6, wherein a tooling hole is formed in advance in the plate member. 8. The method for manufacturing a frame structure for a vehicle or the like as set forth in claim 6, wherein a positioning pin of a forming machine such as a cutting machine or a bending machine can be fitted into the tooling hole. 9. According to claim 6, the peak portion and the valley portion are cut in the same shape and parallel to each other, and are bent in parallel to the longitudinal direction of the cut plate member. A method for manufacturing frame structures for vehicles, etc. 10. The method of manufacturing a frame structure for a vehicle or the like as set forth in claim 6, characterized in that attachment holes are bored at the same intervals in the mountain portion before or during cutting of the plate member. 11. According to claim 6, the crests of the two channel members are fixed to each other so that the ridges and the troughs on both side surfaces of the channel members face each other. A method for manufacturing frame structures for vehicles, etc.