JP2008201150A - Step device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the weight of a step holder and easily achieve two-tone color. <P>SOLUTION: In this step device, a resin holder cover 17 is integrally provided in a front part of the metallic pillion step holder 16, and the periphery is fitted along a step wall 64 of the pillion step holder 16. By engagement from the front side by lock parts 56a, 56b, 56c and screwing of a mounting boss 58 to a mounting projection 67 by a tapping screw on the back side, the holder cover 17 and the pillion step holder 16 are subassembled and integrated as if the holder cover 17 were a continuous portion of the pillion step holder 16. The front part of the pillion step holder 16 superposed on the holder cover 17 is a notch-shaped front edge part 16b, to contribute to weight reduction. The color of the holder cover 17 is different from that of the pillion step holer 16, to achieve two-tone color. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a step device provided with a pillion step holder provided to support a passenger's pillion step in a motorcycle or the like, and more particularly to a device capable of reducing weight.

It is well known that a pillion step holder having a front end portion attached to a vehicle body frame and a pillion step for passengers at a rear end portion is provided on a motorcycle or the like, and the whole pillion step holder is formed of a metal such as an aluminum alloy. (See Patent Document 1).
JP 2002-29478 A

In general, since the step holder is attached to a swing arm pivot plate, it is preferable in terms of appearance and appearance to provide a sense of unity with the pivot plate and the main frame in the vicinity. Therefore, in some cases, the shape is relatively large and the weight is easily increased, and the component is disposed in a relatively conspicuous place, so that it is an important part in appearance. In the above-described conventional example, the whole is integrally formed of metal, so in practice, it is formed of metal up to a portion that does not require rigidity, and the weight and cost may increase more than necessary.
In addition, since the whole is composed of a single metal and the surface color is single, if you want to improve the appearance by changing the surface design to a two-tone color etc., it will take time-consuming painting, and more Cost.
Accordingly, an object of the present invention is to make it possible to reduce the weight of the step device.

In order to solve the above-mentioned problems, a step device according to claim 1 is provided with a metal pillion step holder having a front end attached to a vehicle body frame and a rear end provided with a passenger pillion step. In
Covering and covering part of the pillion step holder, provided with a resin holder cover that is detachably attached,
When this holder cover is attached to the pillion step holder, the upper outer shape of the holder cover is smoothly continuous with the upper edge of the pillion step holder.

  According to a second aspect of the present invention, in the first aspect, a locking groove is provided in a part of the pillion step holder, and a locking portion having a claw that engages with the locking groove is provided in the holder cover. And

  According to a third aspect of the present invention, in the first aspect, the holder cover is attached to and integrated with the pillion step holder from the back side, and the pillion step holder is attached to the vehicle body.

According to a fourth aspect of the present invention, in the first aspect, the holder cover is colored in a different color from the pillion step holder.

  According to the first aspect of the present invention, the metal pillion step holder does not require a portion that does not require rigidity, and the resin holder cover is overlapped and covered on the omitted portion, and the upper outer shape of the holder cover is defined by the pillion step. Since it is made to continue smoothly with the upper edge part of a holder, weight reduction and cost reduction are attained, maintaining the external shape of a predetermined pillion step holder as a whole. In addition, the combination of a metal pillion step holder and a resin holder cover, which have different surface textures, etc., eliminates the surface and makes the design of a combination pattern, improving the appearance. it can.

  According to the invention of claim 2, the holder cover is attached to the pillion step holder by engaging the engaging portion provided in the holder cover with the engaging groove provided in the pillion step holder. It becomes possible to improve the appearance by making the mounting structure difficult to see.

  According to the invention of claim 3, since the holder cover is attached to and integrated with the pillion step holder from the back side, and the pillion step holder in this small set state is attached to the vehicle body, the mounting structure is invisible and easy to assemble. it can.

According to the invention of claim 4, since the holder cover is colored in a color different from that of the pillion step holder, the surface color is not composed of one constituent material as in the conventional pillion step holder, but the appearance is changed to a two-tone color. Since the holder cover is made of resin, coloring is easy, the degree of freedom in color combination can be increased, and if the resin material itself is colored, there is a need for troublesome painting. In addition, the labor and cost for realizing the two-tone color can be reduced.

  An embodiment will be described below with reference to the drawings. FIG. 1 is a left side view of a motorcycle to which the present invention is applied. Reference numeral 1 is a front wheel, 2 is a front fork, 3 is a steering shaft, 4 is a handle, and the steering shaft 3 is rotatably supported by a head pipe 6 provided at the front end of the vehicle body frame 5.

  The body frame 5 includes a main pipe 7 extending obliquely downward from the head pipe 6, a pivot plate 8 extending downward from the rear end portion thereof, and a seat of a pipe member extending rearward obliquely upward from the rear end portion of the main pipe 7. Rail 9 is provided. A single main pipe 7 is provided in the front-rear direction along the center of the vehicle body, and a pair of left and right pivot plates 8 and seat rails 9 are provided.

  A front end of the rear fork 10 is supported on the pivot plate 8 so as to be swingable in the vertical direction by a pivot shaft 11, and a rear wheel 13 is supported on the rear end portion of the rear fork 10 via a rear wheel axle 12. A rear cushion 14 is provided between the rear end of the rear fork 10 and the seat rail 9. Further, a chain adjuster 15 for adjusting the position of the rear wheel axle 12 in the front-rear direction is provided at the rear end of the rear fork 10 (only a part is visible in the figure).

  A front end portion of a pillion step holder 16 is attached to the pivot plate 8 and is covered with a holder cover 17 formed separately. The pillion step holder 16 extends rearward from the pivot plate 8 and has a pillion step 18 at the rear end. The pillion step 18 is in a position overlapping the side of the chain case 19 in a side view.

  An engine 20 is disposed in front of the pivot plate 8 and below the main pipe 7. The engine 20 includes a cylinder portion 21 and a crankcase 22, and is an air-cooled four-cycle type in which the cylinder portion 21 is laid below the main pipe 7 so that the cylinder axis is substantially horizontal in the front-rear direction. It is supported on the plate 8.

  An air cleaner 24 supported by the main pipe 7 in the vicinity of the head pipe 6 is disposed above the cylinder portion 21, and a carburetor 25 is disposed below the air cleaner 24. Supply. An exhaust pipe 26 extends downward from the exhaust port of the cylinder portion 21, bends backward, passes under the crankcase 22, and is connected to a muffler 27 on the side of the rear wheel 13. The muffler 27 is supported at the rear end of the pillion step holder 16.

  A rider step 28 is provided at a lower side of the crankcase 22. A chain 29 is wound between a drive sprocket 20 a provided at the rear portion of the crankcase 22 and a driven sprocket 13 a concentric with the rear wheel 13, and the rear wheel 13 is driven by the engine 20. .

  30 is a handle cover, 31 is a front cover, 32 is a leg shield, 33 is an upper cover that covers the upper part of the front half of the main pipe 7, and 34 is a side cover that covers the side of the vehicle body from the lower part of the front side of the main pipe 7. The lower part forms an under cowl part 34 a and extends below the leg shield 32 to cover the side of the cylinder part 21. A rear cover 35 covers the rear of the vehicle body from below the tandem seat 36. The tandem seat 36 is supported on the seat rail 9 and is capable of rotating up and down on the rear end side around the hinge portion at the front end.

  37 is a winker provided on the front cover 31, and 38 is a meter provided on the top of the handle cover 30. A headlight 39 is provided at the front portion of the handle cover.

  FIG. 2 is a side view of the vehicle body frame 5. An upper portion 40 of the pivot plate 8 is overlapped and welded to the rear end side surface of the main pipe 7. Reference numeral 41 denotes a weld line. A through hole 42 of the pivot shaft 11 is provided at the center of the pivot plate 8. A mounting portion 43 is provided on the front side of the lower end of the pivot plate 8, and a cross pipe 44 for connecting the left and right pivot plates 8 is provided on the rear side. The end of the cross pipe 44 penetrates the pivot plate 8 and protrudes outward, and the end of the brake pedal arm 48 (FIG. 1) is supported by this protruding end. A main stand 49 (same as above) is also attached to the cross pipe 44.

Reference numeral 45 denotes a front edge portion of the pivot plate 8, which is curved along the upper and rear end portions of the crankcase 22 (FIG. 1). Reference numeral 46 denotes a rear edge, and a reinforcing pipe 47 is connected between the rear edge 46 and the seat rail 9. The front end portion of the seat rail 9 is welded to the side surface of the main pipe 7 at the interruption portion of the welding line 41. The rear end portions of the left and right seat rails 9 are connected by a cross member 9a.
A stay 9b is provided at an intermediate portion of the seat rail 9, and the tandem seat 36 (FIG. 1) is supported by the stay 9b and the cross member 9a.
The head pipe 6 is provided with a stay 6a that supports the front cover so as to protrude forward.

  FIG. 3 is a side view showing a state in which the holder cover 17 and the pillion step holder 16 are integrated and attached to the pivot plate 8. The pillion step holder 16 is attached to the pivot plate 8 at two points: a pivot shaft 11 and a bolt 43a below it. The holder cover 17 overlaps with the front part of the pillion step holder 16 and has a substantially T shape in a side view. The upper part 50 extends long in the front-rear direction and is provided so as to cover the weld line 41.

  The rear part 50 a of the upper part 50 is smoothly continuous with the upper edge part 16 a of the pillion step holder 16. Further, the front edge portion 16 b (see FIG. 4) in the front portion 60 is also smoothly continuous with the front edge portion 53 of the holder cover 17. Accordingly, it looks as if the holder cover 17 and the pillion step holder 16 are integrated into a single step holder. That is, the contour shape of the step holder in appearance is a shape in which the contours of the upper portion 50 and the front edge portion 53 of the holder cover 17 are combined with the front portion 60 of the actual pillion step holder 16.

  The pillion step holder 16 is made of an appropriate metal such as a light alloy, and the holder cover 17 is made of an appropriate resin material, and is colored in a color different from that of the pillion step holder 16. This coloring can be easily made into various colors by mixing known colorants such as dyes and pigments in the resin material. However, it is also possible to paint after molding. By attaching the holder cover 17 to the pillion step holder 16, it looks like a part of the color difference of the pillion step holder 16, and the pillion step holder 16 looks like a two-tone single part.

  A portion below the upper portion 50 of the holder cover 17 forms a main body portion 52 provided with a pivot portion hole 51 in the center where one end portion of the pivot shaft 11 faces. The main body 52 is elongated in the vertical direction, and the front edge 53 is continuous with the lower part of the front edge 16 b of the pillion step holder 16. The lower edge portion 54 and the rear edge portion 55 of the main body 52 overlap the pillion step holder 16 without a step.

FIG. 4 is an assembly view of the pivot plate 8, the holder cover 17 and the pillion step holder 16. FIG. 5 shows a rear view in A and a view from the outside in B in a state where the holder cover 17 and the pillion step holder 16 are integrated.
In these drawings, the holder cover 17 is overlapped and directly attached and integrated on a covering portion 65 formed on the upper side of the front portion 60 of the pillion step holder 16, and the holder cover 17 and the pillion step holder 16 are seen in side view. As a result, the pillion step holder 16 is shown as if it is a single part of a two-tone color.

  The lower edge portion 54 and the rear edge portion 55 of the holder cover 17 are provided with locking portions 56 a, 56 b, and 56 c that have a claw-shaped tip and project inwardly of the vehicle body. A portion 57 is provided. A mounting boss 58 is provided on the upper oblique inner surface of the cylindrical portion 57. The periphery of the holder cover 17 is a peripheral wall 59 having a standing wall shape. On the back surface of the pillion step holder 16, a large number of recesses for removing the meat are formed (FIG. 5).

  6 is a cross-sectional view taken along line 6-6 in FIG. 3, and the locking hole 66b penetrates the base of the step wall 64 of the covering portion 65, and is formed so as to project integrally from the front end of the peripheral wall 59 of the holder cover 17. The portion 56b is inserted, and the claw at the tip is locked by engaging with the opening edge of the locking hole 66b. D is the step size of the step wall 64, and the height of the peripheral wall 59 is about the same as D of the corresponding step wall 64.

The engaging portions are provided at a total of three locations, two at the upper and lower portions of the lower edge portion 54 and one at the rear edge portion 55, and have the same structure.
The lower edge portion 54 and the rear edge portion 55 are fitted onto the covering portion 65 along the step wall 64, the fitting portion surface is substantially flush, and the surfaces of the holder cover 17 and the pillion step holder 16 are continuous. ing.

  7 is a cross-sectional view taken along line 7-7 in FIG. 3. A mounting projection 67 is superimposed on the mounting boss 58, the through hole 67a and the guide hole 58a formed in the mounting boss 58 are aligned, and tapping is performed from the through hole 67a. It is attached with a screw 75. Thus, the holder cover 17 is directly fixed and integrated on the pillion step holder 16 by engagement at three positions and screwing at one position.

  8 is a cross-sectional view taken along line 8-8 of FIG. 3, and shows a fitting structure between the rear edge portion 55 and the rear portion of the step wall 64. FIG. The rear edge portion 55 is a rear surface of the peripheral wall 59, and the tip thereof is formed on the step wall 64 and is positioned in contact with the step portion 64b. The outer part of the joint between the rear edge 55 and the stepped wall 64 is slightly recessed by the chamfered parts 64a and 17a, but this recessed part looks like a design line for defining the different-colored part. It does not prevent the 17 and the pillion step holder 16 from appearing to be integrated. This is the same in the entire joining line of the pillion step holder 16 along the step wall 64.

  9 is a side view of the pillion step holder 16, and FIG. 10 is a plan view. As shown in these drawings, the pillion step holder 16 is formed by casting an appropriate metal such as a light alloy by casting or the like, and a front portion 60 that overlaps the pivot plate 8 and an arm portion 61 that extends rearward are integrally formed. It is formed. A covering portion 65 covered with the holder cover 17 is formed one step lower on the front portion 60 by a step wall 64 surrounding a boss 63 formed with a coaxial pivot shaft hole 62 of the rear wheel axle 12. Locking holes 66 a, 66 b and 66 c are provided around the covering portion 65 along the step wall 64.

  A mounting projection 67 is integrally formed on the top of the boss 63 so as to protrude upward, and a through hole 67a is formed. A boss 68 is provided below the front portion 60, and a boss 69 is formed below the boss 68. The boss 68 is provided with a through hole that overlaps the mounting portion 43 (FIG. 4) of the pivot plate 8.

  The arm portion 61 has a bifurcated shape at the rear end portion of the guard portion 70 and the muffler mounting portion 71, and mounting stays 72 for the pillion step 18 are provided projecting laterally at these base portions. The pillion step 18 is attached to the mounting stay 72 so as to be freely raised and lowered. The central part of the arm part 61 and the guard part 70 are provided with a lightening hole 73, 74, respectively.

  As apparent from FIG. 9, the front edge portion 16 b of the pillion step holder 16 has a shape that curves so as to enter the upper and lower sides of the boss 63, and this curved portion corresponds to a notch-shaped portion. The front edge portion of the original pillion step holder 16 should be formed in the same manner along the front edge portion 53 of the holder cover 17 and the upper edge portion of the upper portion 50. It corresponds to what is cut out as the surplus portion 80.

  The surplus portion 80 overlaps with the pivot plate and is not required to be so rigid, so it can be reduced. For this reason, the weight reduction can be realized by omitting the surplus portion 80, and the holder cover 17 replaces the surplus portion 80, so that the external shape is as if the surplus portion 80 remains without being deleted. Will look like. Hereinafter, the contour shape including the surplus portion 80 is referred to as an original pillion step holder shape.

  FIG. 11 is a cross section taken along line 11-11 of FIG. 9, and the bosses 63, 68 and 69 are formed so as to protrude outward, respectively, and the bosses 68 and 69 are formed thick. A stepped wall 64 is provided above the boss 68, and a portion above the stepped wall 64 is a recessed portion that enters the inside of the vehicle body, and this recessed portion forms a covering portion 65. The boss 63 protrudes from the bottom of the covering portion 65 to a height substantially equal to the base between the bosses 68 and 69.

  FIG. 12 is a view showing the holder cover 17 from the front. The front peripheral wall portion 59 is formed wider than the rear peripheral wall portion 59 and can be covered so that the pillion step holder 16 cannot be seen when viewed from the front while attached to the pillion step holder 16. The pivot hole 51 is formed as a through hole of the cylindrical portion 57. The locking portions 56a, 56b, and 56c have different protruding lengths, and the locking portion 56c on the lower end side protrudes the longest.

  Next, the operation of this embodiment will be described. As shown in FIG. 3, the holder cover 17 has an upper portion 50 and a part of the main body portion 52 projecting forward from the front edge portion 16 b of the pillion step holder 16. This overhanging portion corresponds to the volume in which the front portion of the pillion step holder 16 can be reduced by providing the holder cover 17, that is, the volume of the surplus portion 80 in FIG.

  For this reason, the pillion step holder 16 can be reduced in weight by a volume corresponding to the surplus portion 80. Strictly speaking, the difference between the weight corresponding to the surplus portion 80 and the weight of the holder cover 17 is a weight that can be reduced. However, since the holder cover 17 is made of resin and light, almost the weight of the holder cover 17 can be ignored. Moreover, the pillion step holder 16 can maintain the original shape by the holder cover 17 even when the surplus portion 80 is notched from the front portion, so that the weight can be reduced while maintaining the appearance.

In addition, since the holder cover 17 is made of resin, it can be easily colored and can be colored relatively freely, so that a two-tone color can be formed, and a two-tone color can be formed by painting the pillion step holder 16 alone. It can be formed more easily than that. In addition, the degree of freedom in color combination can be increased, and when the resin material itself is colored, there is no need for troublesome painting, and labor and cost for realizing a two-tone color can be reduced.
Further, not only the color but also the difference due to the surface treatment of the light alloy and the texture of the resin can be used in design. In addition, since the metal pillion step holder 16 and the resin holder cover 17 having different surface textures and the like are combined without specially coloring the holder cover 17, the surface is not single, and the design of the combination pattern Therefore, the appearance can be improved.

  Further, by engaging the locking portions 56a, 56b and 56c provided on the holder cover 17 with the locking grooves 66a, 66b and 66c provided on the pillion step holder 16, the holder cover 17 is moved to the pillion step holder 16 from the front side. Since it can be attached, the attachment is facilitated, and the pawl step holder 16 is also protruded and engaged with the pillion step holder 16 at the front ends of the locking portions 56a, 56b and 56c, so that the attachment structure is difficult to see. Thus, the appearance can be improved.

In addition, after the holder cover 17 is locked to the pillion step holder 16, the mounting protrusion 67 is superimposed on the mounting boss 58 inside the holder cover 17, and fastened with the tapping screw 75 from the back side of the pillion step holder 16. Since the cover 17 is attached to and integrated with the pillion step holder 16 to form a small group, and the pillion step holder in the small group state is attached to the pivot plate 8, the mounting structure can be made invisible and easy to assemble.

Left side view of a motorcycle to which the present invention is applied Side view of body frame Diagram showing the state that the holder cover and the step holder are integrated and attached to the vehicle body Assembly drawing of pivot plate, holder cover and step holder The figure which shows the front and back of the state which integrated the holder cover and the step holder 6-6 sectional view of FIG. Sectional view along line 7-7 in FIG. Sectional view taken along line 8-8 in FIG. Side view of step holder Top view of step holder Sectional view taken along line 11-11 in FIG. Figure showing the holder cover from the front

Explanation of symbols

5: body frame, 16: pillion step holder, 17: holder cover, 18: pillion step, 50: upper part, 51: pivot part hole, 52: main body part, 54: lower edge part, 55: rear edge part, 56a, 56b, 56c: locking part, 58: mounting boss, 60: front part, 61: arm part, 62: pivot shaft hole, 64: stepped wall, 65: covering part, 66a, 66b, 66c: locking hole, 67 : Mounting part, 68: Boss, 80: Surplus part

Claims (4)

In the step device provided with a metal pillion step holder with a front end attached to the vehicle body frame and provided with a pillion step for passengers at the rear end,
Covering and covering part of the pillion step holder, provided with a resin holder cover that is detachably attached,
A step device characterized in that when the holder cover is attached to the pillion step holder, the upper outer shape of the holder cover is smoothly continuous with the upper edge of the pillion step holder.   The step device according to claim 1, wherein a locking groove is provided in a part of the pillion step holder, and a locking portion having a claw that engages with the locking groove is provided in the holder cover.   2. The step device according to claim 1, wherein the holder cover is attached to the pillion step holder from the back side and integrated into a small assembly, and the pillion step holder in the small assembly state is attached to the vehicle body. The step device according to claim 1, wherein the holder cover is colored in a different color from the pillion step holder.

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