JP2010221982A - Optical axis adjusting structure of motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical axis adjusting structure of a motorcycle capable of smoothly guiding an optical axis adjusting tool to an optical axis adjusting unit, and enhancing the appearance. <P>SOLUTION: The optical axis adjusting structure of the motorcycle 10 having a meter panel 40 and a body cover 48 surrounding the meter panel 40, has a main bolt 118 which is located before the meter panel 40 to adjust the optical axis direction of a headlight 82. The body cover 48 covers the main bolt 118. A cylindrical part 124 which is opened toward the main bolt 118 to guide the optical axis adjusting tool 122 is formed on the body cover 48. The cylindrical part 124 is contracted toward the main bolt 118. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical axis adjustment structure for adjusting the optical axis direction of a headlight in a motorcycle.

  In general, a motorcycle is provided with a headlight to irradiate the front when traveling at night, and the optical axis direction of the headlight must be set according to a predetermined standard. For this reason, when the optical axis direction of the headlight is shifted, it is necessary to adjust the optical axis direction.

  As an optical axis adjustment mechanism for motorcycle headlights, a headlight assembly is provided in front of a meter panel equipped with a speedometer, etc., and the meter panel is mounted with a cowling brace so that a gap is formed below the meter panel. An optical axis adjusting device that supports and adjusts the irradiation direction of the headlight at the rear of the headlight assembly is known (see Patent Document 1). In this apparatus, an optical axis adjustment tool is inserted from a gap below the meter panel, and the optical axis adjustment mechanism is operated to adjust the irradiation direction of the headlight.

JP-A-6-219207

  In the mechanism described above, when adjusting the irradiation direction (optical axis direction) of the headlight, the adjustment tool (optical axis adjustment tool) is inserted through the gap below the meter panel. It is necessary to guide the adjustment tool to the optical axis adjustment mechanism (optical axis adjustment unit) while taking into account the insertion position. However, since the gap is a narrow space, it is often difficult to smoothly guide the adjustment tool to the optical axis adjustment mechanism. In addition, the optical axis adjustment mechanism can be easily visually recognized by enlarging the gap below the meter panel in order to make the adjustment tool easy to handle. There is a risk of damage.

  Accordingly, an object of the present invention is to provide an optical axis adjustment structure for a motorcycle that can smoothly guide an optical axis adjustment tool to an optical axis adjustment unit and can improve appearance. .

  A motorcycle optical axis adjusting structure according to a first aspect of the present invention is a motorcycle optical axis structure including a meter panel and a vehicle body cover surrounding the meter panel. And an optical axis adjustment unit for adjusting the optical axis direction of the headlight, the vehicle body cover covers the optical axis adjustment unit, and the vehicle body cover includes the optical axis A cylindrical portion that opens toward the adjusting portion and guides the optical axis adjusting tool is formed.

  According to a second aspect of the present invention, in the optical axis adjusting structure for a motorcycle according to the first aspect, the cylindrical portion is reduced in diameter toward the optical axis adjusting portion.

  According to a third aspect of the present invention, in the motorcycle optical axis adjustment structure according to the first or second aspect, the vehicle body cover is formed so as to be symmetric in the vehicle width direction, and the cylinder portion is formed of the vehicle body cover. A dummy member that is offset with respect to the axis of symmetry, is formed in the same shape as the outer shape of the cylinder part, and is disposed symmetrically with the cylinder part with respect to the axis of symmetry of the body cover. It is provided.

  According to the first aspect of the present invention, when the optical axis adjustment tool is inserted into the cylindrical portion, the optical axis adjustment tool is guided to the optical axis adjustment portion by the cylindrical portion. This eliminates the need to adjust the position for engaging with the optical axis adjusting unit after the optical axis adjusting tool is inserted into the tube. Therefore, the optical axis adjustment tool can be smoothly guided to the optical axis adjustment unit. In addition, since the vehicle body cover covers the optical axis adjustment unit, the visual recognition of the optical axis adjustment unit is blocked by the vehicle body cover. Therefore, the optical axis adjustment unit is hardly visually recognized, so that the appearance can be improved.

  According to the second aspect of the present invention, since the cylindrical portion is reduced in diameter toward the optical axis adjusting portion, the hole diameter is smaller than that in the case where the cylindrical portion is not reduced in diameter toward the optical axis adjusting portion. Squeezed. This makes it easier to guide the optical axis adjustment tool to the optical axis adjustment unit and makes it difficult to visually recognize the optical axis adjustment unit. In addition, since the hole diameter of the cylinder part which an operator can visually recognize at the time of the optical axis adjustment is a large diameter part, it does not become difficult to insert the tool for optical axis adjustment into a cylinder part.

  The position of the cylinder part with respect to the vehicle body cover is arbitrarily set. For example, the vehicle body cover may be formed so as to be symmetric in the vehicle width direction, and the cylindrical portion may be formed at a position offset with respect to the symmetry axis of the vehicle body cover. In this case, the cylinder portion may be positioned asymmetrically with respect to the symmetry axis of the vehicle body cover.

  According to the invention described in claim 3, since the dummy member having the same appearance as the cylindrical portion is provided so as to be symmetrical with the cylindrical portion with respect to the symmetry axis of the vehicle body cover, the cylindrical portion is the vehicle body. It does not exhibit an unbalanced appearance that is asymmetric with respect to the symmetry axis of the cover. Moreover, since the dummy member is provided in substantially the same shape as the cylindrical portion, the aesthetics can be further improved.

1 is a side view of a motorcycle incorporating an optical axis adjustment structure according to an embodiment of the present invention. FIG. 2 is an external view of a main part of the motorcycle of FIG. 1 as viewed from the front. FIG. 2 is an external view of the main part of the motorcycle of FIG. 1 as viewed from above. It is the external view which looked at the headlight unit from the front. It is the external view which looked at the headlight unit from back. FIG. 6 is a partially omitted sectional view taken along line VI-VI in FIG. 5. FIG. 7 is a partially omitted cross-sectional view taken along line VII-VII in FIG. 5. FIG. 5 is a partially omitted cross-sectional view taken along line VIII-VIII in FIG. 2.

  Hereinafter, exemplary embodiments according to the present invention will be described with reference to FIGS. For easy understanding, in each figure, the left side of the vehicle body is indicated by an arrow “L”, the right side of the vehicle body is indicated by an arrow “R”, and the front side of the vehicle body is indicated according to the direction viewed from the seated driver. The arrow “Fr” indicates the rear of the vehicle body by the arrow “Rr”.

  First, a motorcycle incorporating an optical axis adjusting structure according to the present invention will be schematically described with reference to FIGS. The motorcycle 10 includes a vehicle body frame 12, a cowl portion 14 provided on the vehicle body frame 12 and covering the vehicle body frame 12, a front wheel 16 that is a steering wheel, a rear wheel 18 that is a drive wheel, and a steering that steers the front wheel 16. The unit 20 includes a seat 22 on which an occupant sits, a fuel tank 24 positioned between the steering unit 20 and the seat 22, and a headlight unit 26 for irradiating the front.

  The vehicle body frame 12 is configured to be integrally joined by, for example, a plurality of types of steel material welding. The vehicle body frame 12 includes a head pipe 32 provided in the steering unit 20 via a top bridge 28 and a bottom bridge 30, a main frame 34 extending rearward from the head pipe 32, and a position below the main frame 34. The down tube 36 extends from the head pipe 32 to the rear of the vehicle body, and the front frame 38 extends from the head pipe 32 to the front of the vehicle body. A meter panel 40 is attached to the front frame 38 behind the headlight unit 26.

  The cowl portion 14 includes a front cowl 42 positioned at the front of the vehicle body, an under cowl 44 positioned at the lower side of the vehicle body, and a side cowl 46 positioned at the rear of the vehicle body. The front cowl 42 includes a vehicle body cover 48 that surrounds the meter panel 40. The vehicle body cover 48 is formed so as to be symmetrical left and right about the axis line Ax1 of the vehicle body, and a vent hole 50 is formed so as to be symmetric about the axis line Ax1.

  The steering unit 20 includes a pair of front forks 52 that pivotally support the front wheels 16 from the left-right direction of the vehicle body, and a handle portion 54 attached to the pair of front forks 52. By steering the handle portion 54, the front wheels 16 is steered.

  In this embodiment, the motorcycle 10 includes fenders 56a and 56b positioned above the front wheels 16 and the rear wheels 18, a cushion unit 58 that buffers vibration transmitted from the rear wheels 18 to the vehicle body frame 12, a window screen 60, and a rearview mirror. 62, a muffler 64, and a stand 66. Needless to say, an engine 68, a transmission 70, and an air cleaner 72 are disposed below the fuel tank 24 and surrounded by a front cowl 42, an under cowl 44, and a side cowl 46. Note that reference numeral 74 in the drawing indicates a seat frame 74.

  Next, the optical axis adjustment structure according to the present embodiment incorporated in the motorcycle 10 basically configured as described above will be described with reference to FIGS. 4 and 5, the headlight bulb and the position light bulb are omitted.

  As shown in FIGS. 4 and 5, the headlight unit 26 applied to the optical axis adjustment structure according to the present embodiment includes a unit main body 80 fixed to the front cowl 42, a headlight 82, a position light 84, 84, a light cover 86, breathing pipes 88 and 88, a bank angle sensor 90 for detecting the inclination of the motorcycle 10 (an inclination in the left-right direction of the vehicle body with respect to the vertical direction of the vehicle body), and an optical axis adjustment mechanism 92 are provided. ing.

  As shown in FIG. 6, the headlight 82 is located at a substantially central portion of the unit body 80, and includes a headlight bulb 94, a bulb support portion 96 that supports the headlight bulb 94, and a headlight bulb 94. And a reflector 98 that reflects the light from the headlight bulb 94. The headlight bulb 94 is set so as to be able to swing in the vertical direction and the horizontal direction of the vehicle body while being fitted in the bulb support portion 96.

  The position lights 84, 84 are provided on the unit main body 80 so as to sandwich the headlight 82 from the left-right direction of the vehicle body (see FIG. 4).

  Further, on the back surface of the unit main body 80, a pair of recesses 100, 100 which are positioned so as to sandwich the valve support portion 96 in the left-right direction along the axis line Ax1 of the vehicle body and are recessed forward of the vehicle body, and a bank projecting rearward of the vehicle body A pair of protrusions 102 and 102 to which the angle sensor 90 is attached are formed. Position light holes 104 and 104 in which position light valves (not shown) are arranged are formed on the bottom surfaces of the pair of recesses 100 and 100. A pair of protrusion parts 102 and 102 are arrange | positioned along with the vehicle body left-right direction (horizontal direction). In the figure, reference numeral 105 denotes a headlight bulb hole for mounting the headlight bulb 94.

  The light cover 86 is attached to the unit main body 80 so as to cover the headlight 82 and the position lights 84 and 84 from the front of the vehicle body. Thereby, the headlight 82 and the position lights 84 and 84 are protected.

  The breathing tubes 88 and 88 are used for circulating air inside the headlight unit 26, and are arranged on the upper portions of the concave portions 100 and 100 of the unit main body 80, and the end surfaces thereof are the concave portions 100 and 100. Oriented to. Thus, the air guided from the breathing tubes 88 and 88 is guided to the inner surface of the light cover 86 through the position light holes 104 and 104 provided in the recesses 100 and 100. Thereby, the light cover 86 can be prevented from being fogged.

  The bank angle sensor 90 is for outputting a signal corresponding to the inclination of the motorcycle 10, and an engine control unit (not shown) of the motorcycle 10 refers to the signal output from the bank angle sensor 90 to refer to the motorcycle. 10 is acquired, and the engine 68 is automatically stopped depending on the acquired inclination signal of the motorcycle 10. In this case, as the bank angle sensor 90, for example, a sensor for detecting the gravitational acceleration of the motorcycle 10 generated in the left-right direction of the vehicle body is used, and the inclination of the motorcycle 10 is obtained from the gravitational acceleration of the traveling motorcycle. The bank angle sensor 90 is located between the bulb support portion 96 for the headlight bulb 94 and the one concave portion (the concave portion 100 located on the right side of the vehicle body of the bulb support portion 96) 100. And a support portion 108 formed integrally with the sensor main body 106. The support portion 108 is attached to the pair of projecting portions 102 and 102 with a bolt 111 via a vibration absorbing member 110. That is, the vibration absorbing member 110 is interposed between the protruding portion 102 and the support portion 108 and between the support portion 108 and the bolt 111. As the vibration absorbing member 110, for example, an elastic member such as rubber is used.

  As shown in FIG. 7, the optical axis adjustment mechanism 92 includes a stay portion 112 that supports the reflector 98, a nut portion 114 fixed to the stay portion 112, and an optical axis adjustment screwed to the nut portion 114. And a bolt 116. The stay part 112 is made of an elastically deformable material. This is because it is preferable to provide flexibility with elasticity for tilting in accordance with the advance / retreat operation of the optical axis adjusting bolt 116. The optical axis adjusting bolt 116 is supported by the unit main body 80 with its head exposed on the back surface of the unit main body 80, and is positioned obliquely above the valve support 96 (on the left of the valve support 96 in the vehicle body). A bolt 118 and a pair of sub-bolts 120 and 120 located below the valve support 96 are included. Accordingly, the reflector 98 is supported by the optical axis adjusting bolt 116 via the stay portion 112 and the nut portion 114.

  As shown in FIGS. 3 and 8, the vehicle body cover 48 applied to the optical axis adjusting structure according to the embodiment is disposed so as to cover the head of the main bolt 118 and opens toward the main bolt 118. A cylindrical portion 124 that guides the optical axis adjusting tool 122 such as a driver, and a dummy member 126 that is disposed symmetrically with the cylindrical portion 124 with respect to the symmetry axis Ax1 of the vehicle body cover 48 are disposed. The dummy member 126 has substantially the same shape as the cylindrical portion 124 in appearance. The cylindrical portion 124 has an inclined portion 123 that is inclined so that the diameter gradually decreases toward the main bolt 118. Accordingly, the inclined portion 123 forms a hole portion 125 whose diameter is reduced. The diameter D1 of the start end of the hole 125 is considerably larger than the diameter D2 of the end, and the diameter D1 is large enough to grip the optical axis adjusting tool 122 and introduce the tip. On the other hand, the diameter D2 is slightly larger than the tip of the optical axis adjusting tool 122. Here, the vicinity of the start end of the hole 125 may be designed in consideration of appearance, and the hole 125 itself is preferably triangular as shown in FIG. Accordingly, the dummy member 126 is preferably provided with a triangular hole.

  The optical axis adjustment structure according to this embodiment is basically configured as described above. Next, an operation related to the optical axis adjustment of the headlight 82 will be described.

  The optical axis adjustment of the headlight 82 is performed using an optical axis adjustment tool 122, preferably a driver. For example, when the main bolt 118 is rotated clockwise by the optical axis adjusting tool 122, a nut portion (hereinafter also referred to as an adjusting nut portion) 114a screwed to the main bolt 118 moves forward of the vehicle body. To do. At this time, the nut portion (hereinafter also referred to as a supporting nut portion) 114b screwed to the pair of sub-bolts 120 does not move, so the stay portion 112 is moved forward of the vehicle body with the supporting nut portion 114b as a fulcrum. Bend. As a result, the reflector 98 supported by the stay portion 112 and the headlight bulb 94 in contact with the reflector 98 are both slightly tilted forward of the vehicle body, so that the optical axis Ax2 of the headlight 82 can be swung downward. . On the other hand, when the main bolt 118 is rotated counterclockwise by the optical axis adjustment tool 122, the adjustment nut portion 114a moves to the rear of the vehicle body and the stay portion 112 bends to the rear of the vehicle body. As a result, both the reflector 98 and the headlight bulb 94 tilt rearward of the vehicle body, so that the optical axis Ax2 of the headlight 82 can be swung upward.

  In the optical axis adjustment structure having the above configuration, when the optical axis adjustment tool 122 is inserted into the cylindrical portion 124 when adjusting the optical axis direction of the headlight 82, the optical axis adjustment tool 122 has the shape of the inclined portion 123. Are guided from the start end portion of the hole portion 125 to the end portion thereof and engaged with the head portion of the main bolt 118. Thus, after the optical axis adjusting tool 122 is inserted into the cylindrical portion 124, the optical axis adjusting tool 122 is automatically guided to the head of the main bolt 118 along the shape of the inclined portion 123. It is not necessary to adjust the position for engaging the head of the bolt 118. Therefore, the optical axis adjusting tool 122 can be smoothly guided to the head of the main bolt 118. Further, since the vehicle body cover 48 is provided so as to cover the head of the main bolt 118 (see FIG. 8), the visual recognition of the main bolt 118 is visible on the vehicle body cover 48 when the driver is seated on the seat 22. Blocked. Thereby, the appearance can be improved.

  Further, since the hole portion 125 formed by the inclined portion 123 of the cylindrical portion 124 is reduced in diameter toward the end side from the start end side, it is compared with the case where the end portion side is not reduced in diameter relative to the start end side. Thus, the optical axis adjusting tool 122 can be more easily guided to the head of the main bolt 118, and the main bolt 118 can be made difficult to visually recognize from the outside. Since the operator can visually recognize the optical axis at the start end of the hole 125, it is not difficult to insert the optical axis adjusting tool 122 into the cylindrical portion 124.

  In the optical axis adjustment structure of this embodiment, since the dummy member 126 is formed so as to be symmetric with the cylindrical portion 124 with respect to the symmetry axis Ax1 of the vehicle body cover 48, it is asymmetric with respect to the symmetry axis Ax1 of the vehicle body cover 48. Does not exhibit an unbalanced appearance. Further, since the dummy member 126 has substantially the same shape as the cylindrical portion 124, the aesthetics can be further improved.

  When a bank angle sensor that detects the gravitational acceleration generated in the vehicle body is attached to the vehicle body frame, vibration transmitted from the road surface to the vehicle body frame via the front and rear wheels is transmitted to the bank angle sensor, causing the bank angle sensor to malfunction. May occur. In the present embodiment, since the bank angle sensor 90 is provided in the unit main body 80, the vibration transmitted from the road surface to the front wheels 16 and the rear wheels 18 via the vehicle body frame 12, the front cowl 42, and the unit main body 80. It is transmitted to the sensor 90. In other words, in this embodiment, the vibration transmission path from the road surface to the bank angle sensor 90 is longer by the front cowl 42 and the unit body 80 than when the bank angle sensor 90 is attached to the vehicle body frame 12. The vibration energy is consumed excessively when the vibration of the unit 42 and the unit main body 80 is transmitted. Thereby, since vibration transmitted to the bank angle sensor 90 is reduced, malfunction of the bank angle sensor 90 can be suppressed. Further, since the vibration absorbing member 110 is provided between the support portion 108 of the bank angle sensor 90 and the protruding portion 102 of the unit main body 80, vibration transmitted to the bank angle sensor 90 can be further suppressed.

  In the present embodiment, when the position light 84 is disposed so as to sandwich the headlight 82 from the left-right direction of the vehicle body, a space is formed between the bulb support portion 96 and the recess 100 on the back surface of the unit body 80. In this case, since the bank angle sensor 90 is disposed in the space, the space between the valve support portion 96 and the recess 100 can be effectively utilized.

  Furthermore, in this embodiment, since the end surface is directed to the concave portion 100 with the breathing tube 88 disposed above each concave portion 100 of the unit main body 80, the breathing tube 88 is not provided in the unit main body 80. Compared with the case where the end face is directed to the recess 100, the configuration of the breathing tube 88 is compact, and space saving is possible.

  The present invention is not limited to the above-described embodiment, and can be implemented in various forms. The hole formed in the cylindrical portion 124 is not limited to an example formed in a triangular shape, and may be formed in a polygonal shape or a circular shape. The layout of the optical axis adjusting bolt with respect to the back surface of the unit body may be freely set. The optical axis adjustment mechanism may have a plurality of main bolts. In this case, a plurality of cylindrical portions corresponding to the plurality of main bolts are formed on the vehicle body cover.

DESCRIPTION OF SYMBOLS 10 ... Motorcycle 12 ... Body frame 26 ... Headlight unit 40 ... Meter panel 42 ... Front cowl 48 ... Body cover 80 ... Unit main body 82 ... Headlight 88 ... Breathing pipe 90 ... Bank angle sensor 118 ... Main bolt (optical axis adjustment) Part)
122 ... Optical axis adjustment tool 123 ... Inclined portion 124 ... Tube portion 125 ... Hole portion 126 ... Dummy member Ax1 ... Symmetric axis Ax2 of the vehicle body cover ... Optical axis

Claims (3)

An optical axis structure of a motorcycle (10) comprising a meter panel (40) and a vehicle body cover (48) surrounding the meter panel (40),
An optical axis adjustment unit (118) that is positioned in front of the meter panel (40) and adjusts the optical axis direction of the headlight (82);
The vehicle body cover (48) covers the optical axis adjustment unit (118), and the vehicle body cover (48) opens toward the optical axis adjustment unit (118) to open an optical axis adjustment tool ( 122) An optical axis adjustment structure for a motorcycle (10), characterized in that a cylindrical portion (124) for guiding 122) is formed. In the optical axis adjustment structure of the motorcycle (10) according to claim 1,
The optical axis adjustment structure of the motorcycle (10), wherein the cylindrical part (124) has a diameter reduced toward the optical axis adjustment part (118). In the optical axis adjustment structure of the motorcycle (10) according to claim 1 or 2,
The vehicle body cover (48) is formed to be symmetrical in the vehicle width direction,
The cylindrical portion (124) is offset with respect to the symmetry axis (Ax1) of the vehicle body cover (48),
The vehicle body cover (48) is formed in the same shape as the external shape of the tube portion (124), and is symmetrical to the tube portion (124) with respect to the symmetry axis (Ax1) of the vehicle body cover (48). An optical axis adjustment structure for a motorcycle (10), wherein a dummy member (126) is provided.

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