JP3701361B2 - Stay structure for mounting accessory parts of motorcycles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stay structure for mounting engine accessory parts such as an ignition coil of a motorcycle.
[0002]
[Prior art]
FIG. 13 is a perspective view of a stay structure for attaching accessory parts of a conventional motorcycle.
In a general motorcycle 100, a stay 102 is often welded to the center of a body frame 101, and engine accessory parts are bolted to the stay 102. Specifically, the stay 102 is formed by welding a collar 104 to a stay main body 103 made of a press-formed body of a steel plate, and two ignition coils 105 and 105 as auxiliary parts for an engine are connected to the collar 104 with bolts and nuts 106. , 106.
[0003]
[Problems to be solved by the invention]
However, in the above conventional technique, the stay main body 103 is a press-formed body of a steel plate, and a dedicated press machine or a press die is used. Press machines and press dies are precision equipment and precision processed products, and are expensive equipment. For this reason, production costs increase especially in the case of small-scale production.
Further, the stay 102 using the steel plate stay body 103 has a large projected area from the side surface, and it is not easy to arrange it in a narrow mounting space such as a motorcycle, avoiding interference with other adjacent parts. The degree of freedom in designing a motorcycle is reduced.
[0004]
SUMMARY OF THE INVENTION Accordingly, the object of the present invention is to provide (1) an auxiliary equipment component mounting stay that can be produced without using an expensive press or a press die, and (2) to reduce the projected area from the side. Thus, it is an object of the present invention to provide an engine accessory part mounting stay that can be easily disposed avoiding interference with other adjacent parts.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the vehicle body frame includes a head pipe and a main frame extending rearward from the head pipe, and the main frame extends rearward from the head pipe. Consists of a rectangular hollow cross-section with a horizontal part that goes out,
Bars and U, U, or bent in a W shape, and welding the tube made-collar for mounting the engine auxiliary components such as the ignition coil in the recess of the central part of it, the end portion on the lower surface of the horizontal portion It is characterized by welding.
Since an inexpensive vendor or bending jig can be used without using an expensive press machine or press die, the production cost can be reduced particularly in the case of small-volume production. In addition, since the projected area from the side is small, it is easy to place it while avoiding interference with other adjacent parts, and it is possible to effectively use a narrow installation space like a motorcycle, and to ensure a predetermined rigidity. can do.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. “Front”, “Rear”, “Left”, “Right”, “Up”, “Down” follow the direction seen from the driver, Fr is front, Rr is rear, L is left, R is right Indicates. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a motorcycle according to the present invention. The motorcycle 1 includes a body frame 2, a body cover 3 covering the body frame 2, an engine 4, a front wheel 5, a rear wheel 6, attached to the body frame 2. It consists of a fuel tank 7, a seat 8, and the like.
[0007]
The vehicle body frame 2 includes a head pipe 11, a main frame 17 that is substantially L-shaped in a side view extending rearward from the head pipe 11, and a seat that extends rearward from the rear upper part of the main frame 17 and mounts a seat 8. The rail 18 is a main component.
The head pipe 11 includes a front fork 12 that is supported by the head pipe 11 so as to be steerable, and a handle 14 connected to the front fork 12 via a top bridge 13. The front fork 12 has a front wheel 5 at a lower end portion. Suspend. Reference numeral 15 denotes a steering stem.
[0008]
The engine 4 arranged at the front part of the main frame 17 is attached to the down tube 19 extending from the front fork 12 to the rear lower side and the rear part to the lower rear part of the main frame 17.
[0009]
The body cover 3 includes a front fender 31 that covers the top of the front wheel 5, a rear fender 32 that is disposed below the seat rail 18 and covers the top of the rear wheel 6, and a rear cowl 33 that is disposed below the seat 8 and on both sides of the seat rail 18. And a side cover 34 extending forward from the front portion of the rear cowl 33.
[0010]
The main frame 17 has a rear wheel swing arm 41 attached to a lower rear portion of the main frame 17 so as to swing up and down. The swing arm 41 suspends the rear wheel 6 from a rear end portion. Reference numeral 42 denotes a rear suspension that supports the swing arm 41.
The fuel tank 7 is attached across the upper horizontal portion of the main frame 17. 43 is an oil pan attached to the lower part of the engine 4, 44 is a radiator, 45 is an exhaust pipe, 46 is a silencer, and 47 is a drive chain for driving the rear wheel 6.
[0011]
FIG. 2 is a perspective view of the body frame of the motorcycle according to the present invention.
The main frame 17 is a single wide rectangular hollow cross section passing through the center of the vehicle width. The rectangular hollow cross section is formed from a horizontal portion 17a extending rearward from the head pipe 11 and a rear portion of the horizontal portion 17a. It consists of a vertical part 17b that hangs down.
The seat rail 18 is a single wide rectangular hollow cross-section that passes through the center of the vehicle width, and this rectangular hollow cross-section is a member that extends rearward from a corner portion 17 c at the upper rear portion of the main frame 17.
[0012]
The head pipe 11 and the main frame 17 are connected by a gusset 21, and the gusset 21 has a pair of left and right down tubes 19, 19 connected to the lower rear part, and the down tubes 19, 19 extend rearward and downward.
The vertical portion 17b has U-shaped reinforcing members 22 and 22 fixed to the left and right sides, and includes a cross member 23 extending in the left-right direction at the bottom. The reinforcing members 22 and 22 are provided with a hanger 24 at the upper front part, a pair of mounting seats 25 and 25 (only one is shown in this figure) on the upper side part, and a bearing 26 penetrating in the left and right direction at the lower part. .
The down tubes 19 and 19 are members for attaching the front portion of the engine 4, and the cross member 23 and the hanger 24 are members for attaching the rear portion of the engine 4. The bearing 26 is a member that supports the swing arm 41 to be vertically swingable on the vertical portion 17b.
[0013]
Reference numeral 27 denotes a pivot hole for suspending the upper portion of the rear suspension 42 on the corner portion 17c. Reference numeral 28 denotes a bracket for attaching the rear fender 32 and the rear cowl 33 to the seat rail 18. Reference numeral 29 denotes a subframe extending rearward and upward from the vertical portion 17b, and is a member that supports a substantially intermediate portion of the seat rail 18.
[0014]
FIG. 3 is a rear view of the body frame of the motorcycle according to the present invention.
The main frame 17 includes side plates 51 and 51 (illustrated by imaginary lines) bolted to both ends of the cross member 23 and the mounting seats 25 and 25. The side plates 51 and 51 are reinforcing members for the vertical portion 17b. In addition, the member supports the swing shaft 41a of the swing arm 41 in cooperation with the bearing 26. Thus, since the vertical part 17b is provided with the side plates 51 and 51, the rigidity of the part which supports the swing arm 41 can be improved.
The cross member 23 is integrally provided with a plate-like bracket 52 at the left end, and this bracket 52 is a member to which a side stand 53 is attached.
[0015]
FIG. 4 is a schematic view of the motorcycle according to the present invention (with the body cover removed).
In the motorcycle, an air cleaner 55 and a carburetor 56 are disposed between the engine 4 and the main frame 17, an ignition coil 64 is disposed below the horizontal portion 17 a of the main frame 17, and a headlight 76 is disposed in front of the head pipe 11. In addition, a winker 77 is disposed, and a reserve tank 81 is disposed below the seat rail 18.
Next, the mounting structure of the ignition coil (engine accessory part) 64, the headlight 76, and the reserve tank 81 will be described in detail.
[0016]
First, the mounting structure of the ignition coil 64 as an engine accessory part will be described with reference to FIGS.
FIGS. 5A and 5B are configuration diagrams of a stay structure for attaching auxiliary equipment parts according to the present invention, FIG. 5A shows the structure of a stay for auxiliary equipment, and FIG. 5B is a view in which an ignition coil is attached. Indicates.
[0017]
As shown to (a), the auxiliary machine stay 61 fixes two collars 63 and 63 to the center part of the stay main body 62 which bent the steel bar in the W shape. Specifically, the stay 61 for auxiliary machinery is bent into a W shape with a steel bar to form a stay main body 62, and steel pipe collars 63, 63 are fitted into two recesses of the W main body 62. And it is the structure welded in the mutually parallel figure. The stay main body 62 is integrally provided with end portions 62a and 62a bent in opposite directions at left and right rising portions. The left and right end portions 62a and 62a extend in a direction intersecting with the longitudinal direction of the horizontal portion 17a.
As shown in (b), the auxiliary equipment stay 61 has end portions 62a and 62a welded to the lower surface of the horizontal portion 17a (vehicle body side), and two ignition coils 64 and 64 are connected to the collars 63 and 63 by bolts 65, 63. It is attached by fixing with 65 and nuts 66 and 66.
[0018]
FIG. 6 is an explanatory view of attachment of auxiliary equipment parts according to the present invention.
The procedure for attaching the ignition coils 64 and 64 will be described.
(1) The ends 62a and 62a of the stay main body 62 are welded to the lower surface of the horizontal portion 17a.
(2) Align the two ignition coils 64, 64 on both ends of the collars 63, 63,
(3) Finally, the bolts 65 and 65 are inserted into the collars 63 and 63 and the ignition coils 64 and 64, and screwed with the nuts 66 and 66.
The attachment procedure is not limited to the above procedure.
[0019]
Further, the engine accessory parts are not limited to the ignition coil 64. Further, the stay main body 62 may have a configuration in which a steel bar is bent in a generally U, U, or W shape, and may be, for example, as shown in FIG.
7 (a) to 7 (c) are modified examples of the auxiliary component mounting stay structure according to the present invention.
[0020]
The auxiliary equipment stay 61 in FIG. 6A is composed of two stay main bodies 62 and 62 in which steel bars are bent in a U shape, and a collar 63 is welded to the bottom of the central portion of each of the stay main bodies 62 and 62. The two stay main bodies 62 and 62 are arranged in the horizontal portion 17a and welded to the left and right end portions 62a and 62a.
The accessory stay 61 in (b) is a modification of the above (a), and the left and right end portions 62a, 62a of the stay main body 62 extend in a direction intersecting the longitudinal direction of the horizontal portion 17a.
The auxiliary machine stay 61 in FIG. 5C is a similar shaped body of the stay main body 62 bent in the W shape of FIG. 5, and the collars 63, 63 is welded. The left and right end portions 62a, 62a of the stay body 62 extend in the longitudinal direction of the horizontal portion 17a.
Furthermore, the auxiliary machine stay 61 is constituted by a nut instead of the collar 63, so that the nut shown in FIG.
[0021]
Next, the mounting structure of the headlight 76 and the blinker 77 will be described with reference to FIGS.
8A and 8B are configuration diagrams of a headlight mounting stay structure according to the present invention, in which FIG. 8A is a front view and FIG. 8B is a side view.
The headlight stay 71 is obtained by fixing plates 75 and 75 to a stay main body 72 in which a steel bar is bent. Specifically, the stay main body 72 is formed by bending a steel bar into a substantially V shape with the back opened in a side view to form a pair of left and right vertical members 73 and 73, and between the upper and lower portions of the vertical members 73 and 73. In this configuration, the horizontal members 74 and 74 are stretched and welded, and the steel plate plates 75 and 75 are welded to the recessed portions of the V-shaped vertical members 73 and 73.
[0022]
The plate 75 includes a first hole 75a for attaching the headlight 76 (see FIG. 4) and a bracket 75b for attaching the winker 77.
Note that the upper and lower ends 73a of the vertical member 73 (headlight stay 71) extend in the vertical direction. 75c is a lightening hole for weight reduction.
[0023]
FIG. 9 is an explanatory diagram of mounting a headlight according to the present invention.
The installation procedure of the headlight 76 and the blinker 77 will be described.
(1) A rubber bush 78 is fitted to the upper and lower ends 73a of the stay main body 72, and (2) the fitting holes 13a, 13a of the top bridge 13 and the fitting holes 15a, 15a of the steering stem 15 are fitted. , The end portion 73a with the bush 78 is fitted,
(3) The headlight stay 71 is attached by assembling the top bridge 13 and the steering stem 15 into the head pipe 11.
(4) The headlight 76 is aligned with the first holes 75a and 75a and attached with bolts 79 and 79,
(5) Finally, the turn signal 77 is attached to the bracket 75b.
The attachment procedure is not limited to the above procedure.
[0024]
As described above, the headlight stay 71 is a single part in which the plates 75 and 75 are welded to the stay main body 72 in which the steel bar is bent, and the number of parts is smaller than that of the conventional multi-part bolt assembly. Assembling work is unnecessary, and parts management and dimensional accuracy management are easy. For this reason, productivity increases and cost reduction can be achieved. In addition, since the dimensional accuracy of the headlight stay 71 is increased, the headlight stay 71 is not removed for dimensional correction when assembled to the motorcycle 1 and the assembly cost is reduced.
[0025]
The headlight stay 71 is a single component, and the stay main body 72 may have a configuration in which a steel bar is bent in a generally V, U, or U shape, for example, as shown in FIG. But you can.
FIG. 10 is a modification of the headlight mounting stay structure according to the present invention. The stay main body 72 includes left and right vertical members 73 and 73 and a lower horizontal member 74 formed by bending one steel bar. Is.
[0026]
FIG. 11 is a sectional view around the seat of the motorcycle according to the present invention, and the seat rail 18 is a member for detachably attaching the seat 8. Specifically, the seat 8 includes a front hook 8a and an intermediate hook 8b at the lower portion, and the front and intermediate hooks 8a and 8b are hooked on the latching members 18a and 18b of the seat rail 18 so that the seat rail 18 It is to be attached to.
The rear fender 32 is a curved body matching the rear wheel 6 (see FIG. 1), and the rear part is bolted to the lower rear part of the seat rail 18. The rear portion of the rear cowl 33 is a closed cross-section body, and the lower portion of the closed cross-section body is clipped together with the rear portion of the rear fender 32. The side cover 34 has a front upper portion bolted to the fuel tank 7 and a front lower portion bolted to the corner portion 17 c of the main frame 17.
[0027]
By the way, the reserve tank 81 for the radiator 44 (see FIG. 1) also serves as a part of the rear fender by being disposed below the front portion of the seat rail 18. In detail, the reserve tank 81 is disposed adjacent to the front of the rear fender 32 by being lifted from below as indicated by the imaginary line in this figure, and the lower surface of the reserve tank 81 is the lower surface of the rear fender 32. It is a shape with a generally extended locus.
Therefore, the rear fender 32 can be shortened by the length of the reserve tank 81.
[0028]
FIG. 12 is a 12-line diagram of FIG. 11 and shows the planar shape of the reserve tank 81.
The reserve tank 81 includes recesses 81a and 81a below the seat rail 18 so as to avoid the left and right subframes 29 and 29. For this reason, the reserve tank 81 can be easily attached below the seat rail 18.
[0029]
In general, since the rear fender for a motorcycle has a large overall length, the weight increases and the molding die is also large.
On the other hand, according to the embodiment of the present invention, the reserve tank 81 also serves as a part of the role of the rear fender 32. Therefore, the rear fender 32 is shortened by the length of the reserve tank 81, and becomes lightweight. The molding die is also reduced in size, and the cost can be reduced. In addition, since the reserve tank 81 is disposed at the position of the rear fender 32, a narrow installation space such as a motorcycle can be used effectively.
[0030]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
According to the first aspect of the present invention, the vehicle body frame includes a head pipe and a main frame extending rearward from the head pipe, and the main frame includes a horizontal portion extending rearward from the head pipe. , composed of a rectangular hollow section member, the steel bars bent U, U, or a W-shape, welded tube made-collar for mounting the auxiliary devices for the engine such as ignition coil in the recess of the central part of it By welding the end to the lower surface of the horizontal part, you can use inexpensive vendors and bending jigs without using expensive press machines or press dies, especially for small-volume production. The production cost can be reduced.
In addition, since the projected area from the side is small, it is easy to place it while avoiding interference with other adjacent parts, and it is possible to effectively use a narrow installation space like a motorcycle, and to ensure a predetermined rigidity. can do.
[Brief description of the drawings]
FIG. 1 is a side view of a motorcycle according to the present invention. FIG. 2 is a perspective view of a body frame of a motorcycle according to the present invention. FIG. 3 is a rear view of a body frame of a motorcycle according to the present invention. Overview of the motorcycle according to the invention (with the body cover removed)
FIG. 5 is a structural diagram of a stay structure for mounting auxiliary equipment parts according to the present invention. FIG. 6 is an explanatory diagram of mounting of auxiliary machine parts according to the present invention. FIG. 8 is a structural diagram of a headlight mounting stay structure according to the present invention. FIG. 9 is a headlight mounting explanatory diagram according to the present invention. FIG. 10 is a modification of the headlight mounting stay structure according to the present invention. FIG. 11 is a cross-sectional view of the motorcycle according to the present invention around the seat. FIG. 12 is a cross-sectional view taken along line 12 in FIG. 11. FIG. 13 is a perspective view of a conventional stay structure for attaching accessory parts to a motorcycle. ]
DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 2 ... Body frame, 4 ... Engine, 11 ... Head pipe, 17 ... Main frame, 17a ... Car body side (horizontal part), 61 ... Stay for auxiliary machines, 62 ... Stay main body, 62a ... End part, 63 ... collar, 64 ... engine accessory parts (ignition coil), 65 ... bolt, 66 ... nut.

Claims (1)

The body frame is composed of a head pipe and a main frame extending rearward from the head pipe, and the main frame is formed of a rectangular hollow cross-sectional body having a horizontal portion extending rearward from the head pipe. ,
Bars and U, U, or bent in a W shape, and welding the tube made-collar for mounting the engine auxiliary components such as the ignition coil in the recess of the central part of it, the lower surface of the end portion of the horizontal portion A stay structure for mounting accessory parts of a motorcycle, characterized by welding to the motor.

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