JPH0436989Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a headlight structure that is attached to a bicycle.

[Prior art and problems to be solved by the invention] Conventionally, some bicycle headlights are configured so that the irradiation angle can be adjusted vertically and horizontally, but in this case, the body slides against the mounting stay. It has a structure that swings when you move it.
As a result, there is a drawback that the body inadvertently slides on a spherical surface due to vibrations or the like, resulting in a large change in the irradiation angle. Therefore, as shown in Fig. 5, a vertical square hole c for preventing rotation is provided in the spherical sliding portion b of the body a, and a notch corresponding to the square hole c is provided in the mounting shaft f in which a threaded groove is formed. When a section g is formed and the mounting shaft is passed through the square hole c, sliding of the body a in the vertical direction (Y direction) is not restricted in any way due to interference between the square hole c and the notch g. Swinging and sliding in the left and right direction (X direction) was restricted to prevent an inadvertent change in the irradiation angle. However, with this product, the adjustment range for changing the irradiation angle of the body is narrow in the horizontal direction and large in the vertical direction, and it is necessary to make special notches on the mounting shaft, making it difficult to use general-purpose parts. There are problems such as loss of performance and cost reduction.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was created with the aim of providing a headlamp structure having an irradiation angle adjustment function that can eliminate these drawbacks. When the body of the headlamp is mounted on the mounting stay provided on the vehicle body side so as to slide spherically, the mounting stay and the body are loosely engaged with each other so that the body slides spherically on the mounting stay. The present invention is characterized in that a sliding range regulating mechanism is provided to regulate the range of the sliding range.

In the present invention, although the body is configured to be able to freely slide on a spherical surface, the amount of spherical sliding can be adjusted within the required range in both the vertical and horizontal directions.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 denotes a headlamp body with a cup-shaped opening at the front, and a low step-like mounting part 2 is provided near the base of the body 1. A mounting hole 4 is formed, a spherically concave sliding portion 3 is formed around the hole 4, and an angular notch 5 is provided near the outer edge of the mounting portion 2. On the other hand, 11 is a mounting shaft with a threaded groove formed therein, 12 is a spring washer,
13 is a nut, 14 is a spherical washer, 15 is an arm plate, 16 is a spacer that is loosely fitted on the mounting shaft 11, and 17 is a coiled elastic that is loosely fit around the spacer 16. Reference numeral 20 denotes a mounting stay for mounting the body 1, and one end of the stay 20 has a corner portion 2 with a hook-shaped claw 21.
2 is formed, and a mounting hole 23 is bored approximately in the center of this corner portion 22.

When the body 1 is attached to the stay 20, the attachment shaft 11 is inserted into the hole 23 of the attachment stay 20 and the nut 13 is inserted through the spring washer 12.
The mounting shaft 11 is integrally tightened to the mounting stay, and the mounting shaft 11 is penetrated into the interior of the body 1 via a spherical washer 14 that is brought into contact with the sliding surface 3 of the body 1 from the outside. At this time, the hook-shaped pawl 21 provided at the tip of the stay 20 is loosely fitted into the notch 5 provided on the body 1 side. On the other hand, inside the body 1, an arm plate 15, a spherical washer 14, a spacer 16, a bullet 17, and a spring washer 12 are inserted into the mounting shaft 11 in this order, and then tightened with a nut 13. In this case, the body 1 is configured to swing back and forth and to the left and right at both the inner and outer spherical washers 14 relative to the mounting shaft 11 and slide spherically to adjust the irradiation angle. With the body 1 assembled to the stay 20 in this way, the claw 21
fits loosely into the notch 5, but the notch 5 on the body 1 side
and the relative dimensions of the claw 21 on the mounting stay 20 side, as shown in FIG. , length, respectively, are set to be H, D, and W, A≧H+α, B≧D+β, and C≧W+γ. Here, α, β,
γ means the amount of sliding (margin) until the pawl 21 comes into contact with the notch 5, and the vertical sliding adjustment is made within this range.

In the embodiment of the present invention constructed as described above, the body 1 can freely swing and slide on the spherical surface of the spherical washer 14 with respect to the fixed mounting shaft 11 to adjust the irradiation angle. The amount of spherical sliding is determined by the pawl 21 relative to the notch 5 on the body 1 side.
This will be limited to the range up to where they come into contact.

In this way, in the present invention, a hook-shaped pawl 21 is provided at the tip of the mounting stay 20 fixed to the vehicle body side,
On the other hand, a notch 5 into which the pawl 21 is inserted and loosely fitted is provided on the body side, and the body 1 can slide on a spherical surface only within the range of allowance dimensions α, β, and γ of the pawl 21 with respect to the notch 5. There are no problems such as the illuminating light being turned downward due to vibrations during running, or the lead wire being damaged due to one rotation of the body 1. Moreover, since this device does not require a notch in the mounting shaft 11, it can also be used for general purpose parts and contribute to cost reduction.

It should be noted that the present invention is of course not limited to the above-mentioned embodiment, and the sliding range regulating mechanism may include the third one.
As shown in the figure, a projection may be provided on the body 1 side to restrict the relative movement range of the claws.
Also, as shown in Fig. 4, the uneven loose fitting relationship is reversed,
It is also possible to provide a protrusion on the body side and a notch on the mounting stay side so that the range of relative movement can be regulated by the loose fit between the protrusion and the notch.

[Operation and Effect] In summary, since the present invention is constructed as described above, a pivot range regulating mechanism that loosely engages with each other is provided between the mounting stay on the vehicle body side and the body of the headlamp. This restricts the range of spherical sliding of the body in the vertical and horizontal directions. Therefore, there is no problem that the sliding range is restricted only in one direction, either up or down or left or right, which is the case with conventional mounting shafts with notches, and ideal sliding range regulation can be achieved. Moreover, this thing is
Since no notch is required on the mounting shaft, parts can be made more versatile and can contribute to cost reduction.

[Brief explanation of drawings]

The drawings show an embodiment of a headlamp structure having an illumination angle adjustment function according to the present invention, in which Fig. 1 is an exploded perspective view of the body of the headlamp, Fig. 2 is a sectional view thereof, 3 and 4 are perspective views showing another embodiment, and FIG. 5 is a perspective view of a conventional body. In the figure, 1 is the body, 5 is the notch, 11 is the mounting shaft, 14 is the spherical washer, 20 is the mounting stay, 2
1 is the nail.

Claims (1)

[Scope of utility model registration request] When the body of the headlamp is mounted on the mounting stay provided on the vehicle body side for spherical sliding, the mounting stay and the body are loosely engaged with each other to limit the range of spherical sliding of the body with respect to the mounting stay. A headlight structure having an irradiation angle adjustment function, characterized by being provided with a sliding range regulating mechanism.