JP3643931B2 - Motorcycle body frame and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a body frame of a motorcycle and a manufacturing method thereof.
[0002]
[Prior art]
In general, a body frame of a motorcycle (motorcycle bicycle, motorcycle) includes a head pipe and a pivot portion, and a steering device is attached to the head pipe, and a swing arm and a suspension device are attached to the pivot portion. In a motorcycle, the shape and strength of a vehicle body frame are determined by the size, weight, shape, and arrangement of a drive mechanism (engine, transmission, clutch, drive transmission device, etc.) mounted on the vehicle. For this reason, the shape of the body frame differs for each type of motorcycle.
[0003]
[Problems to be solved by the invention]
By the way, although motorcycles are mass-produced and put on the market, depending on the type, there may be a vehicle type that remains unsold in large quantities. In addition, even a motorcycle once in the hands of a consumer may be released without much use. For example, even if an old model is excellent in design, the performance (for example, engine performance) is inferior, or the latest model is unpopular and unsold, but the performance is good. Although the body frame and the engine itself are manufactured so as to have a predetermined strength and performance by design, these items are discarded when the unsold value becomes low due to consumer preference. Some of the unsold parts will be resold as used cars in the secondhand market, but cars that are too low in value to be sold in the secondhand market will be discarded. At the time of disposal, the waste is disposed of as a waste by paying a disposal fee to a waste disposal contractor. For this reason, there is a problem that not only the environment is deteriorated by increasing the amount of dust, but also the processing is expensive.
[0004]
The present invention has been made to eliminate the above drawbacks, and reclamation of some of disposed of likely motorcycle as dust, vehicle automatic motorcycle Ru FIG reduction of processing costs reduce the emissions of waste A frame and a manufacturing method thereof are provided.
[0005]
[Means for Solving the Problems]
A body frame of a motorcycle according to the present invention is a body frame of an off-the-shelf motorcycle, and includes a head pipe based on a desired design plan from a body frame having a head pipe and a pivot portion and formed in a predetermined shape. a portion is part of the body frame, separated been cut, a portion including a pivot portion based on SL prefabricated motorcycle different ready-made motorcycle body frame or al the plans are cut disconnected Based on the desired design plan, a part of the vehicle body frame having the pivot portion is positioned and joined in correspondence with the drive mechanism mounted on the motorcycle to form a vehicle body frame that matches the drive mechanism. It is what I did.
[0006]
The vehicle body frame of the motorcycle according to the present invention, the ready-made different on the basis of the desired design plans of the vehicle body frame, Separating cut respectively between the head pipe side and the pivot portion side, these cut out the head pipe side A part and a part on the pivot part side are positioned and joined in accordance with the shape of the vehicle body frame corresponding to the drive mechanism mounted on the motorcycle based on the desired design plan. Therefore, it is possible to utilize the body frame of ready-made motorcycle, producing automatic motorcycles.
[0007]
In addition, a method for manufacturing a body frame of a motorcycle according to the present invention includes a desired design plan from a body frame of a different off-the-shelf motorcycle that has a head pipe and a pivot portion and is formed in a predetermined shape. A first step of selecting a vehicle body frame suitable for the vehicle body frame to be manufactured, and a part of the vehicle body frame selected in the first step including a head pipe based on a desired design plan A second step of cutting and cutting the vehicle body, and the remaining body frame from which the part has been cut off by the second step or a ready-made motorcycle different from the ready-made motorcycle selected by the first step. Based on the above design plan, either one of the vehicle body frames is cut by cutting a part including the pivot portion and separated by the second step. In accordance with the above design plan, a part of the vehicle body frame having the head pipe and a part of the vehicle body frame having the pivot part cut by the third step is arranged with respect to the pivot axis of the pivot part. Both the fourth step of positioning to an angle of 90 degrees and a part of the vehicle body frame positioned by the fourth step are made to correspond to the drive mechanism mounted on the motorcycle based on the above design plan. And a fifth step of forming a vehicle body frame that matches the drive mechanism.
[0008]
In the motorcycle body frame manufacturing method according to the present invention, in the first step, a desired body frame is selected from the same type of ready-made body frames or different types of ready-made body frames based on a desired design plan. . Next, in the second step, the body frame of the off-the-shelf motorcycle selected in the first step is cut off by cutting a part including the head pipe based on a desired design plan, and in the third step, The part of the body frame from which the part has been cut off or the part of the body frame of an off-the-shelf motorcycle different from the ready-made motorcycle are cut off by cutting off a part including the pivot portion based on the plan. Thereafter, in the fourth step, the part including the head pipe and the part including the pivot portion are positioned based on the desired design plan. Next, in the fifth step, both the positioned pipes are positioned. When they are joined in correspondence with the drive mechanism mounted on the motorcycle, a vehicle body frame that matches the drive mechanism is formed. For this reason, since a new motorcycle corresponding to a desired drive mechanism can be manufactured by using a body frame of an already-made motorcycle, a motorcycle that has become unnecessary among the already-made motorcycles can be reused. Can reduce the amount of waste. Further, there is no and this is constrained to a ready-made motorcycle since the motorcycle can be freshly prepared on the basis of the desired design plan.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on an embodiment of the present invention. 1A and 1B are perspective views showing different off-the-shelf body frames used for manufacturing a body frame of a motorcycle according to an embodiment of the present invention. FIG. 2 is different from FIG. It is explanatory drawing explaining the method of manufacturing a desired body frame using a ready-made body frame. A motorcycle body frame 20 according to an embodiment of the present invention includes a body frame (hereinafter referred to as a first body frame) 4 of the ready-made motorcycle 2 shown in FIG. It is formed using a body frame (hereinafter referred to as a second body frame, see FIG. 1B) 5 of an off-the-shelf motorcycle 3 different from the motorcycle 2.
[0010]
As shown in FIGS. 1A and 1B, the body frames 4 and 5 of the motorcycles 2 and 3 are made of weldable metal pipes and have different shapes, but the head pipes 6 and 7 and the pivot portion are different. 8 and 9 respectively. A steering device (not shown) is attached to the head pipes 6 and 7, and a swing arm (not shown) is attached to the pivot portions 8 and 9. The first and second vehicle body frames 4 and 5 have strength and shape depending on the size and weight of newly installed drive mechanisms (engine, transmission, clutch, drive transmission device, etc.) based on the desired design plan. Considered and selected from a number of different ready-made body frames not shown. Different off-the-shelf body frames are new motorcycles that are assembled on motorcycles that are scheduled to be discarded and have low unsold value, or that are scheduled to be discarded as used vehicles. A motorcycle having the strength of is used.
[0011]
As shown in FIG. 1A, the selected first body frame 4 includes a head pipe 6 according to the shape and arrangement of a drive mechanism that is newly mounted based on a desired design plan. The part is cut and separated. The parts to be cut are indicated by Ch1 to Ch6 in FIG. Of the first body frame 4, a body frame piece (a part of the body frame) 10 including the head pipe 6 cut at the cut portions Ch1 to Ch6 is a new body frame described later based on a desired design plan. It is used as a part of the 20 head pipe side.
[0012]
As shown in FIG. 1B, the selected second vehicle body frame 5 includes a pivot portion 9 in accordance with the shape and arrangement of a drive mechanism that is newly mounted based on a desired design plan. The part is cut and separated. The parts to be cut are indicated by Cp1 to Cp6 in FIG. Of the second vehicle body frame 5, a vehicle body frame piece (a part of the vehicle body frame) 11 that is cut at the cut portions Cp <b> 1 to Cp <b> 6 and includes the pivot portion 9 is a new vehicle body frame 20 that will be described later based on a desired design plan. It is used as a part of the pivot part side.
[0013]
Next, as shown in FIG. 2, the cut body frame pieces 10 and 11 are positioned according to the shape and arrangement of the newly mounted drive mechanism based on a desired design plan. At this time, as shown in FIG. 2, the cut portions Ch1 to Ch6 and Cp1 to Cp6 of the pieces 10 and 11 are positioned close to each other.
[0014]
Although positioning of the vehicle body frame pieces 10 and 11 is not shown in the drawing, a jig is installed on a work floor where the levelness is secured, and the vehicle body frame piece 11 is placed on this jig so that the pivot axis L2 of the pivot portion 9 is horizontal. Fix it. Next, the vehicle body frame piece 10 is positioned by a positioning device (not shown) so that the axis L1 of the head pipe 6 is at an angle of 90 degrees with respect to the pivot axis L2 of the pivot portion 9. Then, based on the desired design plan, the cut metal pipe portions 10a to 10f and 11a to 11f are bent by jigs (not shown), and the cut parts are Ch1-Cp1, Ch2-Cp2, Ch3-Cp3, Ch4. -Cp4, Ch5-Cp5, Ch6-Cp6 are substantially faced, and the metal pipe portions 10a to 10f and 11a to 11f are joined by welding. During joining by welding, a positioning device (not shown) joins the axis L1 of the head pipe 6 to the pivot axis L2 while constantly checking the positioning angle so as to be at an angle of 90 degrees. . Thus, when the two pieces 10 and 11 are joined, the vehicle body frame 20 corresponding to the shape and arrangement of the drive mechanism to be mounted can be formed. Therefore, it is possible to manufacture the automatic motorcycle using the body frame of the ready-made motorcycle.
[0015]
In addition, as for the method of joining, the pipe ends 10a to 10f and 11a to 11f of the cut portion are bent as described above, and the cut portions Ch1 to Ch6 and Cp1 to Cp6 are faced to each other and welded. For example, based on a desired design plan, by using a positioning device (not shown), between the cut parts Ch1 and Cp1, Ch2 and Cp2, Ch3 and Cp3, Ch4 and Cp4, Ch5 and Cp5, Ch6 and Cp6 Positioned apart, then folded so that the cut portions face each other, and the cut portions Ch1 and Cp1, Ch2 and Cp2, Ch3 and Cp3, Ch4 and Cp4, Ch5 and Cp5, and Ch6 and Cp6 facing each other with a gap therebetween Welding with a joining material (for example, a connecting metal pipe or metal plate (not shown)) It may be so. Also in this case, the axial center L1 of the head pipe 6 is joined to the pivot axis L2 while being positioned at an angle of 90 degrees by a positioning device (not shown). A bonding material having a strength corresponding to the drive mechanism to be mounted is used based on a desired design plan. In the above embodiment, the vehicle body frame pieces 10 and 11 are joined by welding. However, the present invention is not limited to this, and may be joined by a fastener such as a bolt. You may make it join using the manufactured auxiliary plate (or auxiliary pipe).
[0016]
Next, a method for manufacturing the body frame of the motorcycle according to the above embodiment will be described based on the manufacturing process of the body frame 20. First, based on the desired design plan, the strength and shape are taken into account by the size and weight of the newly installed drive mechanism (engine, transmission, clutch, drive transmission device, etc.), and many different types of off-the-shelf products are not shown. The first and second body frames 4 and 5 are selected from the body frames (first step). That is, the body frames 4 and 5 suitable for the body frame 20 to be manufactured are selected from the body frames of different types of off-the-shelf motorcycles based on the desired design plan. This selection may be selected with an approximate register according to the displacement or the like, and as described later, the degree of freedom in design is increased by the intervening joining member (connecting metal pipe or plate). So, rough selection criteria may be used.
[0017]
Next, according to the shape and arrangement of the drive mechanism that is newly mounted based on the desired design plan, as shown in FIG. Then, a part including the head pipe 6 is cut and separated at the portions Ch1 to Ch6 (second step). Next, as shown in FIG. 1B, the other vehicle body frame 5 selected in the first step includes a pivot portion 9 according to the shape and arrangement based on the desired design plan. The part is cut at sites Cp1 to Cp6 and separated (third step).
[0018]
Next, the vehicle body frame piece 10 having the head pipe 6 cut by the second step and the vehicle body frame piece 11 having the pivot portion 9 cut by the third step are made into the above design plan by a positioning device (not shown). Based on this, the head pipe 6 is positioned so that the axis L1 of the head pipe 6 is at an angle of 90 degrees with respect to the pivot axis L2 of the pivot portion 9 (fourth step). Next, as shown in FIG. 2, the two vehicle body frame pieces 10 and 11 positioned in the fourth step are cut and made of metal corresponding to the drive mechanism mounted on the motorcycle based on the design plan. The pipe portions 10a to 10f and 11a to 11f are bent with a jig (not shown), the cut portions are substantially faced to each other, and the directions are changed to facilitate welding. The metal pipe portions 10a to 10f and 11a to 11f are It joins by direct welding and forms the vehicle body frame 20 corresponding to this drive mechanism (fifth step). At the time of joining, joining is performed while constantly confirming the positioning of the vehicle body frame pieces 10 and 11 so that the axis L1 of the head pipe 6 is at an angle of 90 degrees with respect to the pivot axis L2 of the pivot portion 9 by a positioning device (not shown). Like to do.
[0019]
In the joining by welding, the cut metal pipe portions 10a to 10f and 11a to 11f may be directly welded, or between the cut portions Ch1-Cp1, Ch2-Cp2, Ch3-Cp3, Ch4-Cp4. The metal pipe portions 10a to 10f and 11a to 11f cut by separating Ch5-Cp5 and Ch6-Cp6 may be bent and joined with a joining material interposed between the cut portions. Further, the cut metal pipe portions 10a to 10f and 11a to 11f may be bent and joined by bolts, or may be joined by using bolts and auxiliary metal fittings. The size and shape of the welding material for connecting the body frame pieces 10 and 11 may be appropriately changed, and the shape of the body frame 20 may be changed for each vehicle according to the type of drive mechanism to be mounted.
[0020]
Thus, in the method for manufacturing a vehicle body frame according to the present embodiment, a new motorcycle corresponding to a desired drive mechanism can be manufactured using the vehicle body frame of an off-the-shelf motorcycle. Ru can be reused a motorcycle that is no longer necessary out of the two-wheeled vehicle.
[0021]
In the above embodiment, a desired body frame is formed using two already-made body frames of different types, that is, different shapes. However, the present invention is not limited to this. Needless to say, one frame may be divided into the head pipe side and the pivot part side, and these two pieces may be joined in a desired shape. In the above embodiment, the body frame is made of a metal pipe. However, the present invention is not limited to this, and a part of the body frame may be made of a metal plate-like member, or may have a desired strength. You may make it comprise with the synthetic resin etc. which contain (including glass fiber). Also, at the time of joining, a metal pipe for connection is interposed between the cut parts of the cut pieces and welding is performed, or the shape of the body frame is adjusted and joined using a fastener such as a bolt. However, the present invention is not limited to this, and the cut portions may be directly welded without bending the cut pipe portion as long as the cut portions of the cut pieces are matched. The cutting position and cutting method can be freely determined anywhere according to the desired design plan.
[0022]
In addition, according to the method for manufacturing a body frame of a motorcycle according to the present embodiment, it is also effective for repairs when the manufacturer (manufacturer) disappears or parts are not supplied from the manufacturer due to circumstances even if the old car is popular. It is. It is also effective for repairing rare cars and expensive motorcycles.
[0023]
【The invention's effect】
As described above, according to the vehicle body frame of the motorcycle according to the present invention, a desired design plan can be obtained from a vehicle body frame of an off-the-shelf motorcycle that includes a head pipe and a pivot portion and is formed into a predetermined shape. including a portion of a body frame which is partially detached been cut including a head pipe, the pivot portion based on SL prefabricated motorcycle different ready-made motorcycle body frame or al the plan based on Based on the desired design plan, a part of the vehicle body frame having a pivot part that has been partially cut and separated is positioned and joined in correspondence with the drive mechanism mounted on the motorcycle. since so as to form a matched body frame, it is possible to manufacture the automatic motorcycle using the body frame of the ready-made motorcycle, punished Reduce the cost can and Turkey.
[0024]
According to the method for manufacturing a body frame of a motorcycle according to the present invention, a desired design plan can be obtained from a body frame of a different off-the-shelf motorcycle, which has a head pipe and a pivot portion and is formed in a predetermined shape. A first step of selecting a vehicle body frame suitable for the vehicle body frame to be manufactured, and a part of the vehicle body frame selected in the first step including a head pipe based on a desired design plan A second step of cutting and cutting the vehicle body, and the remaining body frame from which the part has been cut off by the second step or a ready-made motorcycle different from the ready-made motorcycle selected by the first step. Based on the above design plan, either one of the vehicle body frames is cut by cutting a part including the pivot portion and separated by the second step. In accordance with the above design plan, a part of the vehicle body frame having the head pipe and a part of the vehicle body frame having the pivot part cut by the third step is arranged with respect to the pivot axis of the pivot part. Both the fourth step of positioning to an angle of 90 degrees and a part of the vehicle body frame positioned by the fourth step are made to correspond to the drive mechanism mounted on the motorcycle based on the above design plan. And a fifth step of forming a vehicle body frame that matches the drive mechanism, so that a desired motorcycle can be manufactured using a vehicle body frame of an off-the-shelf motorcycle. Among motorcycles, motorcycles that are no longer needed can be reused, so that the amount of waste can be reduced and the processing costs can be reduced. Moreover, since the motorcycle can be freshly prepared on the basis of the desired design plan such that is constrained to a ready-made motorcycle Ku, sales are suppressed rest, the efficiency of the sales is improved.
[Brief description of the drawings]
FIGS. 1A and 1B are perspective views showing different ready-made body frames used for manufacturing a body frame of a motorcycle according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram for explaining a method for manufacturing a body frame of a motorcycle according to an embodiment of the present invention, using a different body frame that is different from that of FIG. 1;
[Explanation of symbols]
4 Ready-made first body frame (off-the-shelf body frame)
5 Ready-made second body frame (off-the-shelf body frame)
6 Head pipe 9 Pivot part 10, 11 Body frame piece (part of body frame)
20 body frame Ch1 to Ch6 cut part Cp1 to Cp6 cut part

Claims (2)

A body frame of an off-the-shelf motorcycle, in which a part including the head pipe is cut and separated from a body frame having a head pipe and a pivot portion and formed in a predetermined shape based on a desired design plan a portion, a part of the vehicle body frame having a pivot portion which is partially detached been cut including a pivot portion based on SL prefabricated motorcycle different ready-made motorcycle body frame or al the plan of A vehicle body frame for a motorcycle, wherein the vehicle body frame is positioned and joined in accordance with a drive mechanism mounted on the motorcycle based on the desired design plan to form a vehicle body frame that matches the drive mechanism. Select a body frame suitable for the body frame to be manufactured based on the desired design plan from the body frames of different off-the-shelf motorcycles that have a head pipe and pivot part and are formed in a predetermined shape. A first step of:
A second step of cutting the body frame selected in the first step by cutting a part including the head pipe based on a desired design plan; and
Either the remaining body frame from which the part has been cut off by the second step or the body frame of a pre-made motorcycle selected from the first step and different from the pre-made motorcycle is used as the design plan. A third step of cutting and separating a part including the pivot part based on
Based on the above design plan, a part of the vehicle body frame cut by the second step and having the head pipe and a part of the vehicle body frame cut by the third step and having the pivot part are pivoted by the pivot of the head pipe. A fourth step of positioning so as to be at an angle of 90 degrees with respect to the pivot axis of
A part of the vehicle body frame positioned by the fourth step is joined to correspond to the drive mechanism mounted on the motorcycle based on the design plan, and a vehicle body frame matching the drive mechanism is formed. A method for manufacturing a body frame of a motorcycle, comprising the steps of:

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