JP2006273300A - Headlight for bicycle and bicycle equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headlight for a bicycle capable of adjusting difference of a direction by turing a coil case body by external operation so as to adjust it to a direction of a rotor even if deviation of the direction is generated between the rotor and a stator at fixing of a mounting frame. <P>SOLUTION: In the headlight for a bicycle and the bicycle equipped with this, a coil case including a power generation coil is rotatably provided on a guide rail provided on a cylindrical part of the mounting frame and is made to the stator and the stator can be moved by external operation such that the direction of the stator is mutually vertical and superposed in adjustment to the mounting state of the rotor provided at a wheel side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  According to the present invention, a rotor such as a magnet array plate attached to a rotating part of a bicycle, for example, a reel spoke of a front wheel, and a stator having a power generation coil attached to the bicycle main body are separated from each other by an external operation at a predetermined interval. The present invention relates to an invention which can be adjusted and installed in a vertical and superposed position.

Conventional bicycle headlamps are incandescent and use a rotary generator when driving at night. For this reason, when obtaining electric power with the required illuminance, a method is adopted in which the roller of the rotary generator is pressed against the side surface of the tire. With this method, a large frictional resistance was generated with respect to the rotational motion, and wasteful labor was consumed.
Further, in the case where the roller is pressed against the side surface of the tire, there is a problem that it is troublesome to set a generator. A non-contact type bicycle headlamp solves these problems.

This is a conventional problem caused by pressing a roller against the side of a conventional tire.
As a first point, when the side surface of the tire is pressed with a roller in the case of running at night, frictional resistance is generated with respect to the rotational motion, and the pedal becomes heavy.
Secondly, when the road surface is bad and mud (slack), mud, dirt, etc. enter between the tire and the roller and slip to reduce illuminance.
Third, turn on the generator set during night driving. Off is cumbersome for manual work.
Etc.
In order to solve this problem, the headlight of the previous non-contact type light load bicycle has been proposed.

As shown in FIGS. 9 and 10, a plurality of magnet array plates 33 (rotors 34) are arranged on the reel spokes 32 of the front wheel 31 of the bicycle, for example, in N poles and S poles alternately and in a fan shape at equal intervals. A headlight electric circuit (figure 3) is attached, and a stator 37 composed of an iron core 35 and a power generation coil 36 is attached at a position facing the rotor 34, and the electric power extracted from the power generation coil is rectified and smoothed (see FIG. The bicycle is driven by the case body 40 via a light-emitting diode 38 that is turned on by electric power supplied from a headlight electric circuit, and a condensing lens 39 that collects light from the light-emitting diode 38 on the front surface of the bicycle and irradiates the road surface. The road surface in front of was irradiated.
Japanese Patent Laid-Open No. 9-233793

  In the case of the conventional bicycle headlamp and the bicycle equipped with the same, the magnet array plate 33 serving as the rotor 34 is attached to the reel spoke 32 of the front wheel 31, but there is no great variation in mounting. As for the attachment of the stator 37 attached to the fork 41 side of the main body, the attachment fitting 42 made of sheet metal or the like is attached to the fork by fixing the screw 43 or the like. Therefore, when the screw 43 is tightened, the stator 37 is attached obliquely. If it is attached while being skewed, as shown in FIG. 10, the superposition relationship between the coil 36 and the iron core 35 on the stator side and the magnet array plate 33 of the rotor 34 is shifted, and a predetermined power is applied. There was a problem that the light-emitting diode 38 that could not be made and turned on would be dark.

Of course, when attaching the stator to prevent this from happening, pay close attention, but if you use the type of bicycle or use it once and install the headlight for the bicycle on a deformed bicycle, You must be prepared for some gaps.
Conventionally proposed bicycle headlamps do not have this adjustment function, so alignment has been a burden on the person who installs the bicycle headlamps. Further, regarding the mounting of the conventional bicycle headlamp, the management of the gap between the rotor 34 and the stator 37 is important, but the proposed mounting bracket or the case main body constituting the stator 37 is also important. At 40, this could not be adjusted.

The present invention has been made to solve the above problems.
In other words, a coil case including a power generation coil is rotatably provided on a guide rail provided on the cylindrical portion of the mounting frame, and this coil case is used as a stator, and the rotor is provided with the direction of the stator on the wheel side. In a bicycle headlamp of a type in which a rotor and a stator are mounted in a non-contact manner because they are perpendicular to each other and can be corrected by external operation so that they overlap. There can be some mounting errors on the rotor and stator, and even if the rotor and stator are misaligned, it can be adjusted after assembly by external operation, so efficient power generation is always possible and assembly is possible. The work can be greatly shortened.

  In addition, a long hole is provided in the rectangular flat portion of the mounting frame so that the gap between the wheel side rotor and the stator can be adjusted so that the rectangular flat portion of the mounting frame is sandwiched between the mounting screw and the washer. Since the rotor and stator can be easily adjusted by simply retightening the screws using a long hole, combined with the positional offset adjustment described earlier, efficient power generation is always possible. And can greatly reduce the assembly work.

  In addition, the cylindrical portion of the mounting frame is bulged to form a rectangular flat portion, and a guide rail serving as a guide portion is provided at the center of the inner periphery of the cylindrical portion in the width direction, and a guide groove or claw on the coil case side is provided on the guide rail. Because the coil case is rotatably provided on the mounting frame, positioning and assembling of the casing and lid case constituting the coil case main body to the mounting frame is facilitated and attached. The coil case is stably rotated with respect to the frame. Furthermore, positioning of the rotor and the stator is facilitated.

  The coil case is composed of a case and a lid case. The lid case is fixed to the case by screws or the like, and the coil and iron core are built in the case, and the electrical connection line is provided on the lid case side. Since it is led out of the coil case through the escape groove, the lid case can be attached with screws etc. based on the case where the generator coil is attached, and the lead wire as the electrical connection line It is easy to pull out and the electric connection line does not interfere with the rotation of the coil case body.

  In addition, it is provided in front of the lid case so that the position of the coil and iron core mounted in the case can be confirmed with the mark mark, and the mark mark is used for alignment with the rotor. Therefore, the direction of the rotor can be easily adjusted using a mark mark.

  In the present invention, the coil case main body is pivotally attached to the mounting frame. Therefore, even if a misalignment occurs between the rotor and the stator when the mounting frame is fixed, the orientation of the rotor The coil case body can be rotated by an external operation to adjust the difference in orientation. As a result, the bicycle can be retrofitted to a commercial bicycle without increasing the pedal drive load and mechanical loss.

Embodiments of the present invention will be described with reference to the drawings.
FIGS. 1-8 is a figure explaining the bicycle headlamp which concerns on embodiment of this invention, and a bicycle provided with the same.
First, FIG. 1 is a perspective view of an essential part of a bicycle equipped with a headlamp equipped with the present invention.
In the figure, a headlamp 2 of a bicycle 1 is roughly composed of a rotor 3 and a stator 4 case body 5 as shown in the figure. Although not shown in the drawing, the case main body 5 includes a headlamp electric circuit, a light emitting diode, a condenser lens, a reflector, and the like. More specifically, as shown in FIGS. 1 to 3, the rotor 3 has several magnets 8a, 8b,..., 8n arranged in a fan shape alternately on the N pole and the S pole on the circumference of the reel spoke 7 of the wheel 6 of the bicycle 1. Are arranged at regular intervals, and a plurality of magnet array plates 9 having an arc shape are intermittently arranged.

As shown in FIGS. 3 (a) and 3 (b), the magnet array plate 9 is made of a high permeability material such as iron, for example, silicon steel having a high permeability, and has a shape of a part of a circular arc of a circle having a predetermined radius r. .., 8n arranged in a fan shape alternately on the base 10 at N-poles and S-poles, and an attachment hole 10a provided on the terminal side of the base 10 It is configured. The magnets 8a, 8b,..., 8n attached to the magnet array plate 9 have, for example, a length of 15 mm, a width of 6 mm, a thickness of 4 mm, and NS polarity formed in the thickness direction. In this embodiment, the magnets 8a, 8b... 8n are made using neodymium having a coercive force of 3200 to 3500 (Gauss).
As shown in FIG. 1, a plurality of these magnet array plates 9 are intermittently attached to the reel spokes 7 of the bicycle 1 to form a rotor 3. The rotor 3 and the stator 4 generate power intermittently.

As shown in FIGS. 1 and 2, the stator 4 includes a power generation unit case 12 having a mounting bracket 11 and a power generation coil 13 provided inside the power generation unit case 12. In the stator 4, as shown in FIG. 1, the mounting bracket 11 of the power generation unit case 12 is fixed to the front wheel fork 14 of the bicycle 1 via a fixing piece 15. As shown in FIG. 2, the power generating coil 13 of the stator 4 is fixed so as to be perpendicular to the magnetic pole surfaces of the magnets 8a, 8b... 8n of the magnet array plate 9 of the rotor 3.
Further, the power generation coil 13 of the stator 4 is composed of an iron core configured in a substantially Y-shape with a material such as amorphous or a silicon steel plate, and a coil wound around a middle core portion of the substantially Y-shape of the iron core. It is configured.

Further, the positional relationship between the magnets 8a, 8b... 8n on the magnet array plate 9 of the rotor 3 and the iron core of the power generation coil 13 of the stator 4 is not shown in the figure, but the magnets 8a, 8b. The interval of 8n and the interval of the teeth of the iron core are formed substantially the same. Further, the distance (gap) between the surfaces of the magnets 8a, 8b... 8n of the magnet array plate 9 of the rotor 3 and the surface of the teeth of the iron core of the power generating coil 13 of the stator 4 is kept at, for example, 4 mm. It is like that. In addition, this gap is normally set to 2 mm or more and 6 mm or less.
The bicycle headlamp according to the present invention is arranged such that the rotor and the stator are perpendicular to each other and overlap each other.

Next, the case main body 5 constituting the headlamp 2 will be described. The power generation coil 13 of the stator 4 and the power generation coil 13 generate electric power with a capacitor (not shown) connected in series. This electric power resonates at a frequency synchronized with a predetermined relative speed of each of the magnets 8a, 8b. Further, the power extracted from the power generation coil 13 is rectified and smoothed and output.
The case body 5 is a light-emitting diode that is turned on by the electric power supplied from the headlight electric circuit, and a light-collecting light that condenses light from the light-emitting diode on the front surface of the bicycle 1 and irradiates the road surface in front of the bicycle 1 The lens etc. are stored.
As shown in FIG. 1, the headlamp electrical circuit of the case body 7 and the power generation coil 13 (see FIG. 2) of the stator 4 are connected to each other by an electrical connection line 16.

Next, the structure of the rotor 3 attached to the wheel side and the stator 4 attached to the front wheel fork 14 will be described with reference to FIGS.
Reference numeral 17 denotes an attachment frame, and this attachment frame 17 bulges a part of the cylindrical portion 17a into a rectangular flat portion 17b. The cylindrical portion 17a has a guide rail 17c on the inner periphery thereof, and the rectangular flat portion 17b. Has a long hole 17d (see FIG. 6) that allows the stator 4 to be moved closer to or away from the rotor 3 side when the mounting bracket 11 is mounted.

In other words, the long hole 17d changes the attachment position of the stator 4 with respect to the rotor 3 to change the distance between them (for example, the gap of 4 mm). Therefore, the long hole 17d is very important.
That is, as shown in FIG. 1, the stator 4 is configured such that the mounting bracket 11 is fixed to the fixing piece 15 on the bicycle 1 side with screws or the like (not shown). In this case, a slight attachment error (direction in which the interval between the rotor 3 and the stator 4 is increased or decreased) is generated.
Therefore, an adjustment portion for adjusting the above-mentioned distance is required as long as the stator 4 is fixed with the mounting bracket 11 with screws or the like. The adjustment part at this time is the long hole 17d.
That is, when the interval is set with the long hole 17d, the screw 22 is passed through the long hole 17d of the rectangular flat portion 17b as shown in FIGS. 5 and 6, and the interval is adjusted within the range of the long hole 17d. is there.
This adjustment is performed by fixing the rectangular flat portion 17b having the long hole 17d with the screw 22 between the mounting bracket 11 and the washer 26. That is, if the screw 22 is loosened, the rectangular flat portion 17b becomes a long hole. The stator 4 can be moved toward or away from the rotor 3 within a range of 17d.

Reference numeral 18 denotes a coil case, and the coil case 18 includes a case 18a and a lid case 18b. Thus, the coil case 18 is incorporated in the mounting frame 17, and constitutes the power generation unit case 12 provided on the guide rail 17c at the guide groove 19 formed at the joint of the case 18a and the lid case 18b. is doing.
That is, the case 18a and the lid case 18b are assembled from both openings of the mounting frame 17 (in the direction of the arrow in FIG. 5) until they abut against the guide rail 17c, and are provided in advance at the tips of the case 18a and the lid case 18b. The stepped portion is brought into contact, a guide groove 19 is formed, and the guide rail 17c is positioned in the guide groove 19, and the case 18a and the lid case 18b are assembled with the screw 20, the guide rail 17c of the mounting frame 17 is positioned, and both It is connected freely.

  Of course, the engagement relationship between the mounting frame 17 and the coil case 18 is not limited to the guide groove 19. For example, a claw that engages the guide rail 17c is provided on the case 18a, and this claw is used as the guide rail. The attachment frame 17 and the coil case 18 may be connected by engaging with 17c. Further, the lid case 18b may be fixed to the case 18a with a screw 2 or the like. The engaging claws are naturally provided so as not to obstruct the rotation of the coil case 18. The above-described power generation unit case 12 is a combination of the mounting frame 17, the case 18a, and the lid case 18b.

Reference numeral 16 denotes an electrical connection line (lead wire), and reference numeral 23 denotes a cutout hole for drawing out the electrical connection line 16 from the inside of the coil case 18 to the outside of the coil case 18, and is provided in the lid case 18b. Of course, the cutout hole 23 through which the electrical connection line 16 is drawn is provided at a position away from the sliding portion between the coil case 18 and the mounting frame 17, and the electrical connection line 16 is damaged between the mounting frame 17. There is no.
Reference numeral 24 denotes a rotation stop screw that restricts the rotation of the mounting frame 17 and the coil case 18. The rotation-preventing screw 24 attaches the rotor 3 and the stator 4 and fixes them after the alignment is completed.

Next, an adjustment method when an attachment error occurs in the stator 4 attached to the front wheel fork side will be described.
In FIG. 1, since the stator 4 is attached to the front wheel fork 14 with the mounting bracket 11 and the fixing piece 15, some mounting error naturally occurs. At this time, if there is no adjustment mechanism, the assembler will need to disassemble the folded assembly every time an error occurs and reassemble it so that no error will occur.
The present invention makes it possible to easily correct this assembly error by an external operation.

Hereinafter, this point will be described with reference to FIG.
In the figure, 3 is a rotor, 4 is a stator, and 6 is a wheel. In the drawing, the normal mounting position of the rotor 3 and the stator 4 is a position indicated by a solid line, that is, a position where the rotor 3 and the stator 4 are arranged so as to be perpendicular to each other and overlap. As described above, the position of the stator 4 attached to the front wheel fork via the mounting bracket 11 and the fixing piece 15 changes. (At this time, the rotor 3 attached to the reel spoke side may also change somewhat, but for the sake of simplicity, it is assumed to be constant here.) When the position changes, the position of the generator coil 13 of the stator 4 For example, the triangle symbol 25 (mark mark) indicating the mark does not face the center C of the angle Q1, Q2 from the center C point of the wheel as shown in the figure.

That is, when the stator 4 is attached at a regular position, the tip of the triangle symbol 25 serving as the above mark points to the center C point, but if the attachment position of the stator 4 is shifted, the tip of the triangle symbol 25 is set to the center C point. It will shift from. If the stator 4 is attached in this state, the position with respect to the rotor 3 is shifted (Q1, Q2), and efficient power generation cannot be performed. The coil case 18 of the stator 4 is rotated by an angle Q1 or angle Q2 between the stator case 4 and the mounting frame 17 so that the triangle symbol 25 of the mark faces the center C point. The rotation of 18 and the mounting frame 17 is fixed.
As a result, the rotor 3 and the stator 4 mounted on the wheel side can obtain a superposition relationship in which the power generation action is always maximized without reassembling as in the prior art.

Since the present invention is configured as described above, it has the following effects.
That is, a coil case body including a power generation coil is rotatably provided on a guide rail provided in the cylindrical portion of the mounting frame, and the coil case is used as a stator and the direction of the stator is provided on the wheel side. In a bicycle headlamp of the type in which the rotor and the stator are mounted in a non-contact manner because the rotors and stators can be corrected by an external operation so that they are perpendicular to each other and overlap with each other according to the mounting state of the rotor. Even if there is a slight mounting error between the rotor and stator, even if the rotor and stator overlap, it can be adjusted after assembly by external operation, so efficient power generation is always possible. At the same time, the assembly work can be greatly shortened.

  In addition, a long hole is provided in the rectangular flat portion of the mounting frame so that the gap between the wheel side rotor and the stator can be adjusted so that the rectangular flat portion of the mounting frame is sandwiched between the mounting screw and the washer. Since the rotor and stator can be easily adjusted by simply retightening the screws using a long hole, combined with the positional offset adjustment described earlier, efficient power generation is always possible. And can greatly reduce the assembly work.

  In addition, a cylindrical portion of the mounting frame is bulged to form a short flat surface portion, and a guide rail serving as a guide portion is provided at the center in the width direction on the inner periphery of the cylindrical portion. Because the coil case is rotatably provided on the mounting frame, positioning and assembling of the casing and lid case constituting the coil case main body to the mounting frame is facilitated and attached. The coil case is stably rotated with respect to the frame. Furthermore, positioning of the rotor and the stator is facilitated.

  The coil case is composed of a case and a lid case. The lid case is fixed to the case with screws, etc., and the coil and iron core are built in the case, and the electrical connection line is provided on the lid case side. Because it is led out of the coil case through the escape groove, the lid case can be attached with screws etc. based on the case where the generator coil is attached, and the lead wire as the electrical connection line can be pulled out And the electric connection line does not interfere with the rotation of the coil case body.

  Also, a mark mark that can confirm the position of the coil and iron core mounted in the case is provided in front of the lid case, and the mark mark is used for alignment with the rotor. Since it is a thing, the direction of a rotor can be easily adjusted using a mark mark.

It is a principal part perspective view of the bicycle provided with the headlamp provided with this invention. It is principal part explanatory drawing of FIG. It is explanatory drawing of the rotor (magnet arrangement | sequence board) used for FIG. It is a front view of the electric power generating apparatus used for FIG. It is AA sectional drawing of FIG. It is the figure which looked at FIG. 5 from the arrow P. FIG. It is BB sectional drawing of FIG. It is explanatory drawing which adjusts the superposition | polymerization relationship of the rotor provided with this invention, and a stator. It is a figure explaining the attachment structure of the conventional non-contact-type bicycle headlamp. It is a figure which shows the example when attachment of the electric power generating apparatus of FIG. 9 does not go well.

Explanation of symbols

1. Bicycle 2. 2. Headlight Rotor 4. 4. Stator 5 Case body 6. Wheel 7. Reel sport 8. 8a, 8b... 8n Magnet 9. Magnet array plate 10. 10. Substrate 10a mounting hole Mounting bracket 12. Power generation unit case 13. Generator coil 14. Front wheel fork15. Fixed piece 16. Electrical connection line 17. Mounting frame 17a Cylindrical portion 17b Rectangular plane portion 17c Guide rail 17d Long hole 18. Coil case 18a case 18b lid case 19. Guide groove 20. Screw 21. Fixed band 22. Screw 23. Notch hole 24. Stop screw 25 Triangle symbol (mark mark)
26 Washer

Claims (5)

  A coil case including a power generation coil is rotatably provided on a guide rail provided on the cylindrical portion of the mounting frame, and this coil case is used as a stator, and a rotor provided with the direction of the stator on the wheel side is attached. A bicycle headlamp and a bicycle provided with the same, which are perpendicular to each other and can be corrected by external operation so that they overlap.   A long hole is provided in the rectangular flat part of the mounting frame, and the rectangular flat part of the mounting frame is sandwiched between the mounting screw and the washer so that the gap between the wheel side rotor and the stator can be adjusted. The bicycle headlamp according to claim 1 and a bicycle including the same.   A cylindrical portion of the mounting frame is bulged to form a short flat surface portion, and a guide rail serving as a guide portion is provided at the center in the width direction on the inner periphery of the cylindrical portion. 2. The bicycle headlamp according to claim 1, wherein a coil case is rotatably provided on the mounting frame.   The coil case is composed of a case and a lid case. The lid case is fixed to the case with screws and the like, and the coil and iron core are built in the case. The lead-out of the electrical connection wire is a relief groove provided on the lid case side 2. The bicycle headlamp according to claim 1, wherein the bicycle headlamp is led out of the coil case through the bicycle and the bicycle including the same.   The coil mark and iron core mounted in the case are provided in front of the lid case so that the position of the mark can be confirmed by the mark mark, and the mark mark is used for alignment with the rotor. 1. A bicycle headlamp according to 1, and a bicycle equipped with the same.

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