JP2005199793A - Head lamp device for two-wheeled vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce cost and weight by making a head lamp device for a two-wheeled vehicle have simple constitution, to suppress the size of a head lamp body in relation to a lens, and to suppress entering of rain water and dust into the head lamp body. <P>SOLUTION: In this device, the head lamp body 30 is constituted by being abutted and held by left and right lamp stays 10, and an optical axis of the head lamp body 30 can be adjusted in the horizontal direction and the vertical direction. On left and right sides of the head lamp body 30, held parts 24 are provided along a projecting spherical surface 24a and a recessed spherical surface 22a matched with the surface 24a, which are mutually and substantially concentric. Each lamp stay 10 is provided with a holding part 22 slidably fitting into the held parts 24 along each of the spherical surfaces 24a and 22a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a motorcycle headlamp device.

Conventionally, in a headlamp device for a motorcycle, a lamp unit in which a lens, a reflector, and the like are integrally formed is supported by a rim member surrounding the lamp unit, and the rim member and a lamp case supported by a lamp stay are coupled. Many of them make up the headlamp body. The lamp unit is supported by the rim member so as to be tiltable so that the optical axis can be adjusted in the horizontal direction or the vertical direction, and by operating an adjustment mechanism provided between the lamp unit and the rim member. The optical axis can be adjusted in the tilting direction of the lamp unit (see, for example, Patent Document 1).
JP 2003-212035 A

However, in the configuration as described above, a reinforcing rib is provided on the rim member or the plate thickness is increased so that the holding unit of the lamp unit in the rim member can withstand vibrations and impacts during traveling of the vehicle. There is.
In addition, since an adjustment mechanism is provided between the lamp unit and the rim member, the rim member and the lamp case (head lamp body) are increased in size relative to the lamp unit (lens), and the number of parts is increased. End up. Furthermore, by making the lamp unit tiltable with respect to the rim member, rainwater and dust may easily enter the headlamp body from a gap formed between the lamp unit and the rim member.
Accordingly, the present invention aims to reduce the cost and weight of the headlamp device for a motorcycle with a simple configuration, to suppress the size of the headlamp body relative to the lens, and to prevent rainwater and dust from entering the headlamp body. For the purpose.

  As a means for solving the above problem, the invention described in claim 1 is configured such that a headlamp body (for example, the headlamp body 30 in the embodiment) is held in contact with a plurality of lamp stays (for example, the lamp stay 10 in the embodiment). In the headlamp device for a motorcycle, the boundary surface between the headlamp body and each lamp stay is formed of spherical surfaces that are substantially concentric with each other (for example, the convex spherical surface 24a and the concave spherical surface 22a in the embodiment).

  More specifically, as in the invention described in claim 2, the headlamp body (for example, the headlamp body 30 in the embodiment) is held in contact with the left and right lamp stays (for example, the lamp stay 10 in the embodiment). In the two-wheeled vehicle headlamp device in which the optical axis of the headlamp body can be adjusted in the horizontal and vertical directions, spherical surfaces that are substantially concentric with each other on the left and right of the headlamp body (for example, convex spherical surfaces in the embodiments) 24a and the concave spherical surface 22a) are provided with a convex portion (for example, the held portion 22 in the embodiment), and each lamp stay has a concave portion (for example, an embodiment) that is slidably fitted to the convex portion along the spherical surface. A holding part 24) in the example is provided.

According to the above configuration, the optical axis of the headlamp body can be adjusted by tilting the headlamp body along the spherical surface. That is, it is not necessary to support the lamp unit with a rim member so as to be tiltable or to provide an adjustment mechanism on the headlamp body as in a conventional motorcycle headlamp device. As a result, the configuration of the headlamp body is simplified and the optical axis adjustment in the horizontal direction and the vertical direction can be simultaneously performed.
Further, since the adjustment mechanism is eliminated, the size of the headlamp body with respect to the lens can be suppressed.
Furthermore, it is not necessary to make the lamp unit tiltable with respect to the rim member, and it is possible to eliminate a gap between the lamp unit and the rim member.

  According to a third aspect of the present invention, the headlamp main body is rotatable about a connecting shaft (for example, the neck lower portion 12a in the embodiment) that connects the convex portion and the concave portion, and at least the convex portion or the concave portion is provided. On the other hand, a slit portion (for example, a stay side bolt insertion hole 21 in the embodiment) that is long in the front-rear direction and through which the connecting shaft is inserted is provided.

  According to this configuration, the headlamp body is tilted (rotated) about its left and right connecting shafts, that is, the headlamp body is tilted up and down around the axis along the left-right direction, so that the vertical direction of the optical axis Can be adjusted. In addition, the projection (headlamp body) and the recess (lamp stay) are connected to each other by inserting the connecting shaft through a slit portion that is long in the front-rear direction provided in the projection or recess located on the left and right of the headlamp body. It is possible to tilt the headlamp body so that its left and right ends move back and forth, in other words, in a state where it is rotatably connected around the axis, in other words, it can be tilted to the left and right. Adjustment in the horizontal direction can be performed.

According to the first and second aspects of the invention, the cost and weight can be reduced by simplifying the headlamp body, and the optical axis can be easily adjusted to improve the maintainability. In addition, the size of the headlamp body can be reduced to increase the degree of design freedom, and rainwater and dust can be prevented from entering the headlamp body.
According to the third aspect of the invention, the headlamp body can be regulated so as to tilt only in the direction necessary for the optical axis adjustment, so that the optical axis adjustment can be performed more easily.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle unless otherwise specified.

  In FIG. 1, reference numeral 2 denotes a body frame of a motorcycle (motorcycle). A head pipe 3 is provided at the front end of the vehicle body frame 2, and a stem pipe 5 that is integrally formed with the bottom bridge 4 is passed through the head pipe 3 so as to be rotatable about an axis. A top bridge 6 is attached to a protruding portion of the stem pipe 5 from the head pipe 3 by a stem nut 6A, and the top bridge 6, the stem pipe 5 and the bottom bridge 4 are mainly pivotally supported by the head pipe 3 so as to be steerable. A steering stem 7 is configured. Note that front forks (not shown) are fitted and mounted in the fitting holes formed in the left and right ends of the top bridge 6 and the bottom bridge 4.

A motorcycle headlamp device according to the present invention is disposed in front of the head pipe 3. This two-wheeled vehicle headlamp device includes a headlamp body 30 and a pair of left and right lamp stays 10 and 10 that support the headlamp body 30.
The headlamp main body 30 is formed in a dome shape that is connected to the rear of the rim member 32, a round single lamp type lamp unit 31, an annular rim member 32 mounted on the outer periphery of the lamp unit 31. The lamp case 33 is provided. The lamp unit 31 includes a lens 34 and a reflector cover 35, and a lamp bulb 36 is disposed in a lamp chamber formed by these. Here, in this embodiment, the lamp unit 31 and the rim member 32 are integrally coupled.

  The lamp unit 31 and the rim member 32 engage the engaging claw 32a formed on the upper inner side of the rim member 32 with the engaging portion 33a at the upper opening of the lamp case 33, and are inserted into both lower sides of the lamp case 33. By tightening the screw 33 b to be inserted into the nut hole 32 b of the rim member 32, the screw 33 b is fixed to the lamp case 33. In this way, the lamp unit 31 and the lamp case 33 are coupled via the rim member 32 to constitute an integrated headlamp body 30. The outer shape of the headlamp body 30 is formed by the outer surface of the lens 34, the rim member 32, and the lamp case 33.

Such a headlamp body 30 is disposed between the lamp stays 10 and is held so as to be sandwiched between the lamp stays 10 from the left and right.
A front end portion of each lamp stay 10 is a holding portion (concave portion) 22 having a stay side bolt insertion hole (slit portion) 21. On the other hand, at the left and right ends of the headlamp body 30, a held portion (convex portion) 24 is provided by changing a part of the outer wall of the lamp case 33 outward in the left-right direction. Each held portion 24 is provided corresponding to each holding portion 22, and each of the held portions 24 is provided with a case side bolt insertion hole 23. Then, the lower neck portion (connection shaft) 12a of the fixing bolt 12 is inserted into each bolt insertion hole 22, 24, and this is screwed to the fixing nut 18 (see FIGS. 3 and 4) provided inside the lamp case 33. By tightening, the holding portion 22 and the held portion 24 are fastened together.

  Each fixing bolt 12 is arranged so as to share the axis B along the left-right direction. If the fastening between each fixing bolt 12 and the fixing nut 18 is loosened, the holding portion 22 and the held portion 24 are fixed to each other. It will be in the state connected so that rotation around the neck lower part 12a of the volt | bolt 12 was possible. That is, the headlamp main body 30 can be tilted (rotated) up and down around the neck lower portion 12a of each fixing bolt 12, and as a result, the optical axis of the headlamp main body 30 can be adjusted in the vertical direction. Is possible.

  Referring also to FIG. 2, each lamp stay 10 is made of, for example, aluminum die cast, and is attached from the upper front side of the substantially triangular main body 13 to the upper rear side and the inner side in the vehicle width direction. The arm 14 is extended, and the connecting arm 15 is extended from the upper rear side of the main body 13 toward the upper rear side and inward in the vehicle width direction. Further, from the lower rear side of the main body 13, the support arm 16 extends downward and inward in the vehicle width direction. The holding portion 22 is provided at a front end portion of the main body 13, and an attachment portion 17 for attaching the front turn signal 20 is provided at a substantially central portion.

  Each ramp stay 10 has an upper end portion of the connecting arm 15 fixed to the boss portion 6a at the front portion of the top bridge 6 by a connecting bolt 15c, and a lower end portion of the support arm 16 having a protruding shaft 16b protruding from the lower end thereof. Each of the four front bosses 4a is inserted into and supported by the boss 4a, thereby being fixed to the steering stem 7 respectively. A mounting seat surface 14a for mounting a meter unit (not shown) is provided at the upper end of each mounting arm 14.

  As shown in FIGS. 3 and 4, the laterally outer surface of each held portion 24 of the headlamp body 30 is a convex spherical surface (spherical surface) 24 a that bulges toward the holding portion 22 side. On the other hand, the inner side surface in the left-right direction of the holding portion 22 of the lamp stay 10 is a concave spherical surface (spherical surface) 22 a that matches the convex spherical surface 24 a of the held portion 24. The held portion 24 and the holding portion 22 are fitted to each other so that the spherical surfaces 24 a and 22 a are brought into contact with each other, and the headlamp body 30 is held by each lamp stay 10 in this state.

  The spherical surfaces 24a and 22a are provided so as to be concentric with each other on the left and right, and the center C thereof is located on the axis B where the fixing bolts 12 are disposed. Thus, if the fastening between the fixing bolts 12 and the fixing nut 18 is loosened, the headlamp body 30 is not only tilted up and down as described above, but the headlamp body 30 is tilted around the center C in an arbitrary direction. It becomes possible to make it. At this time, the held portion 24 and the holding portion 22 slide on each other in the direction along the spherical surfaces 24a and 22a. Note that the center C is located approximately at the center in the left-right direction between the held parts 24 (between the holding parts 22) so that the spheres 24a and 22a have the same radius on the left and right.

  Here, the stay side bolt insertion hole 21 in the holding portion 22 of each lamp stay 10 is a slit-like long hole that is long in the front-rear direction. The width of the stay side bolt insertion hole 21 is set to a dimension that is slightly larger than the outer diameter so that the neck lower portion 12a of the fixing bolt 12 can be inserted. The case-side bolt insertion hole 23 in the held portion 24 has a circular shape slightly larger than the outer diameter so that the neck lower portion 12a of the fixing bolt 12 can be inserted.

  When the fixing bolt 12 is inserted into the bolt insertion holes 21 and 23, the headlamp body 30 moves the fixing bolt 12 along the slit-like stay side bolt insertion hole 21, that is, the headlamp. The main body 30 is tilted to move the left and right ends back and forth. In other words, the headlamp body 30 can be tilted left and right around the center C, and as a result, the optical axis of the headlamp body 30 can be adjusted in the horizontal direction.

  According to the above embodiment, in the headlamp device for a motorcycle, the headlamp body 30 is held in contact with the left and right lamp stays 10, and the optical axis of the headlamp body 30 can be adjusted in the horizontal and vertical directions. The left and right sides of the headlamp body 30 are provided with held portions 24 along the spherical surfaces 24a and 22a that are substantially concentric with each other, and each lamp stay 10 slides on the held portion 24 along the spherical surfaces 24a and 22a. The holding portion 22 that can be fitted is provided. Here, it can be said that the spherical surfaces 24 a and 22 a are boundary surfaces between the headlamp body 30 and the lamp stays 10.

According to this configuration, the optical axis of the headlamp body 30 can be adjusted by tilting the headlamp body 30 along the spherical surfaces 24a and 22a. That is, it is not necessary to support the lamp unit 31 with the rim member 32 so as to be tiltable or to provide an adjustment mechanism in the headlamp body 30 as in a conventional motorcycle headlamp device. Thereby, the configuration of the headlamp body 30 is simplified, and the optical axis adjustment in the horizontal direction and the vertical direction can be simultaneously performed.
For this reason, cost and weight can be reduced, and the optical axis can be easily adjusted to improve maintainability.

Further, since the adjustment mechanism is eliminated, the size of the headlamp body 30 with respect to the lens 34 can be suppressed, and the degree of freedom in designing the headlamp device for a motorcycle can be increased.
Further, it is not necessary to make the lamp unit 31 tiltable with respect to the rim member 32, and it is possible to eliminate a gap between the lamp unit 31 and the rim member 32, and rainwater and dust enter the headlamp body 30. Can be difficult.

  In the motorcycle headlamp device, the headlamp main body 30 can be rotated around the neck lower portion 12a of the fixing bolt 12 that connects the held portion 24 and the holding portion 22, and the holding portion 22 is substantially A slit-like stay side bolt insertion hole 21 that is long in the front-rear direction and through which the neck lower portion 12a of the fixing bolt 12 is inserted is provided.

According to this configuration, the headlamp body 30 is tilted (rotated) around the neck lower portions 12a of the left and right fastening bolts 12, that is, the headlamp body 30 is tilted up and down around the axis B along the left-right direction. Thus, adjustment in the vertical direction of the optical axis can be performed. Further, by holding the neck lower part 12a of the fixing bolt 12 through the slit-like stay side bolt insertion hole 21 provided in the holding part 22 positioned on the left and right of the headlamp body 30 in the front-rear direction, the held part 2422 is held. The left and right ends of the headlamp body 30 are moved back and forth while the (headlamp body 30) and the holding portion 22 (lamp stay 10) are connected so as to be rotatable around the neck lower part 12a of the fixing bolt 12. It is possible to tilt the optical axis in other words, in other words, to tilt left and right, and as a result, it is possible to adjust the optical axis in the horizontal direction.
In this way, the headlamp body 30 can be regulated so as to tilt only in the direction necessary for the optical axis adjustment, so that the optical axis adjustment can be performed more easily.

  The present invention is not limited to the above embodiment. For example, the holding portion of the lamp stay 10 is disposed on the inner side in the left-right direction of the held portion of the headlamp body 30, and the holding portion has a convex spherical surface. It is good also as a structure in which a to-be-held part has a concave spherical surface. Further, for example, a configuration in which lamp stays are arranged above and below the headlamp body 30 may be adopted. Furthermore, it is good also as a structure which provided the slit-shaped volt | bolt penetration hole in the to-be-held part 24, or good also as a structure provided in both the holding part 22 and the to-be-held part 24.

Moreover, it is good also as a structure which a to-be-held part and a holding | maintenance part form with the some rib etc. which were cut along each spherical surface 24a, 22a. Furthermore, the configuration in the above embodiment is not limited to a round single-lamp headlamp, but can also be applied to a square or dual-lamp headlamp. Furthermore, each convex spherical surface 24a (each concave spherical surface 22a) may have a different radius. In addition, the holding portion 22 and the held portion 24 may be configured to be rotatably connected by an axis other than the neck lower portion 12 a of the fixing bolt 12.
And the structure in the said Example is an example, and it cannot be overemphasized that a various change is possible in the range which does not deviate from the summary of invention.

It is a disassembled perspective view around the headlamp device for a motorcycle. It is a side view of a headlamp body and a lamp stay. FIG. 3 is a top view of FIG. 2. It is sectional drawing which follows the AA line in FIG.

Explanation of symbols

10 Lamp stay 12a Neck lower part (connection shaft)
21 Stay side bolt insertion hole (slit)
22 Holding part (concave part)
22a Concave spherical surface (spherical surface)
24 Hold part (convex part)
24a Convex spherical surface (spherical surface)
30 Headlamp body

Claims (3)

  A two-wheeled vehicle headlamp device in which a headlamp body is abutted and held by a plurality of lamp stays, wherein a boundary surface between the headlamp body and each lamp stay is formed of spherical surfaces that are substantially concentric with each other. Headlamp device.   In a headlamp device for a two-wheeled vehicle, wherein the headlamp body is held in contact with the left and right lamp stays, and the optical axis of the headlamp body can be adjusted in the horizontal and vertical directions, on the left and right of the headlamp body, A headlamp device for a motorcycle is provided with a convex portion along a spherical surface that is substantially concentric with each other, and each of the lamp stays is provided with a concave portion that is slidably fitted along the spherical surface. . The head lamp body can be rotated around a connecting shaft that connects the convex portion and the concave portion, and at least one of the convex portion or the concave portion is substantially long in the front-rear direction and a slit portion through which the connecting shaft is inserted. The two-wheeled vehicle headlamp device according to claim 2, wherein the two-wheeled vehicle headlamp device is provided.

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