JP3139263U - Bicycle hood device - Google Patents

Abstract

An object of the present invention is to reduce the number of parts of a bicycle hood device, and to reduce the weight and cost.
A pair of left and right telescopic shafts 20 of a hood device 2 is provided at the front of a bicycle 1. A beam is bridged between the tip portions of the arc-shaped shaft portions of the same step of the left and right telescopic shafts 20, and the seat 60 is stretched in a frame formed by the left and right telescopic shafts 20 and beams 31 to 33 so as to be able to expand and contract. To do. The radius of curvature of the shaft portion and therefore of the telescopic shaft 20 is set to about 800 to 850 mm, and the center C of the radius of curvature is positioned substantially near the saddle of the bicycle 1.
[Selection] Figure 1

Description

  The present invention relates to a hood device that is installed in a bicycle and can be used as a substitute for a parasol or a parasol.

To ride a bicycle in the rain, you must hold an umbrella with one hand, which is dangerous and difficult to ride. Therefore, for example, the device described in Patent Document 1 is provided with a hood device at the front of the bicycle. In the hood device, a pair of left and right telescopic shafts extend upward, a foldable hood frame is provided between the distal ends of these telescopic shafts, and a hood cloth is stretched on the hood frame. When it rains, the telescopic shaft is extended upward and the hood frame at the tip is extended backward, and the hood cloth covers the rider's head. This eliminates the need for an umbrella and increases safety. Moreover, the hood device can be always installed on the bicycle, and is stored in the front basket when not in use and is deployed when necessary, so that convenience is improved.
JP 2005-047364 A

  The hood device described in the above-mentioned patent document has a folding hood frame on an extendable shaft, requires a hinge mechanism for deployment, and has a large number of parts.

In order to solve the above problems, the present invention is a hood device that is installed at the front of a bicycle and can be deployed to cover the rider's head,
A pair of telescopic shafts consisting of multiple stages of shafts with the same radius of curvature are provided on the left and right, and a beam is bridged between the distal ends of the same stage of the left and right telescopic shafts. And a sheet is stretched in a frame made of a beam so that the sheet can be expanded and contracted.
Thereby, the number of parts can be reduced, and weight reduction and cost reduction can be achieved.

  The curvature radius is generally preferably 700 to 1000 mm, more preferably 750 to 900 mm, and still more preferably 800 to 850 mm, although it depends on the size of the bicycle and the physique of the user of the bicycle.

  The center of the radius of curvature is preferably located in the vicinity of the saddle of the bicycle (near the rider's buttocks). Thereby, it is possible to reliably cover the rider's head during deployment.

The lowermost shaft portion of the telescopic shaft is provided with a pair of upper and lower connecting portions, which are connected to the bicycle, respectively, and the position of the other connecting portion can be adjusted back and forth with respect to one connecting portion. It is preferable.
Thereby, the angle of the hood device can be adjusted around the one connecting portion. By adjusting the position of the connecting parts in the front-rear direction, the upper end of the hood device when deployed can be greatly adjusted in the vertical direction. Therefore, for example, the height of the upper end portion of the hood device in use can be adjusted according to the rider's physique, or can be kept out of the way when standing.

  According to the present invention, a hinge or the like for deployment is unnecessary, the number of parts can be reduced, and weight reduction and cost reduction can be achieved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First Embodiment FIG. 1 shows a bicycle 1 to which the present invention is applied. A hood device 2 is detachably attached to the front of the bicycle 1. As shown in FIGS. 1 and 2, the hood device 2 includes a pair of left and right telescopic shafts 20 and beams 31 to 33.

  Each of the left and right telescopic shafts 20 is configured by connecting a plurality of (four in this case) cylindrical shaft portions 21 to 24 having different thicknesses in a nested manner, and can be extended and contracted. These shaft parts 21-24 are comprised with lightweight metals, such as hard resin and aluminum. The length of each shaft part 21-24 is about 300 mm. As shown in FIG. 3, the thickest shaft portion 24 at the base end (lowermost stage) is attached substantially vertically between the left and right handle grips 11 and the front car 12 of the bicycle 1.

  As shown in FIG. 4, a lock mechanism 25 that locks in an extended state is provided between two shaft portions that are connected to each other. Here, the third-stage shaft portion 23 and the lowermost-stage shaft portion 24 will be described as an example, but the second-stage and third-stage shaft portions 22 and 23, and the uppermost-stage and second-stage shafts. A similar locking mechanism 25 is provided between the portions 21 and 22.

The structure of the lock mechanism 25 is as follows.
As shown in FIG. 4B, a spring 26 (biasing means) and a ball 27 are provided at the proximal end (lower end) of the shaft portion 23 on the small diameter side. The ball 27 is accommodated in a hole 20 a formed in the peripheral wall of the proximal end portion of the small diameter side shaft portion 23 and is urged radially outward by a spring 26. On the other hand, a spherical recess 20b is formed on the inner peripheral surface of the tip (upper end) of the shaft portion 24 on the large diameter side. As shown in FIG. 4A, when the small-diameter shaft portion 23 is pulled out from the large-diameter shaft portion 24 until the hole 20a and the spherical concave portion 20b overlap, the ball 27 has a small diameter due to the bias of the spring. It protrudes from the side shaft portion 23 and is fitted into the spherical recess 20b. As a result, the shaft portions 23 and 24 are locked so as not to contract.

  A locking projection 20c is provided on the inner peripheral surface on the distal end side of the locking mechanism 25 at the distal end portion of the large-diameter shaft portion 24 and projects radially inward. On the other hand, the base end portion of the shaft portion 23 on the small diameter side is thick to a little above the hole 20a, and a step 20d is formed between this thick portion and the tip side portion. When the hole 20a and the spherical concave portion 20b are just overlapped, the step 20d comes into contact with the locking convex portion 20c. Thereby, the small diameter side shaft portion 23 is prevented from coming off.

  In the locked state of FIG. 4A, when the small-diameter shaft portion 23 is pushed in the proximal direction, the ball is guided by the spherical recess 20b and resists the spring 26 as shown in FIG. Retract inside 20a. As a result, the lock is released and the telescopic shaft 20 can be contracted.

  As shown in FIGS. 1 and 5, each shaft portion 21 to 24 is curved in an arc shape. The curvatures of these shaft portions 21 to 24 are the same. Therefore, the stretchable shaft 20 in the stretched state has an arcuate shape (arch shape) having a circumferential length that is approximately four times the length of the shaft portions 21 to 24, and warps rearward toward the tip (upper end). The uppermost shaft portion 21 is positioned above the saddle.

  The radius of curvature R of each of the shaft portions 21 to 24 and the telescopic shaft 20 is preferably about R = 700 to 1000 mm, although it depends on the size of the bicycle 1, and in an ordinary adult bicycle 16 to 18 inch size bicycle 1 R = About 800 to 850 mm is more preferable. The center C of the radius of curvature R is preferably located around the rear side of the saddle 10 of the bicycle 1 (near the rider's buttocks). The center angle θ of the stretched shaft 20 in the stretched state is preferably about θ = 70 to 90 °.

  As shown in FIG. 1, beams 31 to 33 are bridged between upper end portions (tip portions) of shaft portions 21 to 23 of the same step except for the lowest step of the left and right telescopic shafts 20. These beams 31 to 33 are made of hard resin. Grid-like ribs 34 are provided inside the beams 31 to 33 to ensure strength.

As shown in FIG. 2, the top beam 31 connecting the uppermost shaft portions 21 and 21 has an arch shape in which the central portion curves upward.
The beam 32 connecting the second-stage shaft portions 22 and 22 and the beam 33 connecting the third-stage shaft portions 23 and 23 each have a curved shape in which the center portion is gently curved upward. The curvatures of the beams 32 and 33 are sufficiently smaller than the top beam 31. As shown in FIGS. 2 and 3, when the telescopic shaft 20 is contracted, the second-stage beam 32 and the third-stage beam 33 overlap each other.

The hood device 2 is installed in the bicycle 1 as follows.
As shown in FIG. 1, the lowermost shaft portions 24 of the left and right telescopic shafts 20 are arranged substantially vertically between the left and right handle grips 11 and the front car 12 of the bicycle 1, respectively. As shown in FIG. 3, a pair of upper and lower connecting bars 41, 51 are bridged horizontally between the intermediate portions of the left and right shaft portions 24. These connecting bars 41 and 51 are disposed between the handle post 13 and the front car 12 of the bicycle 1. The upper connection bar 41 is provided with a pair of left and right band holders 43, and a band 44 is attached to these band holders 43. This band 44 is fastened to the handle pipe 14 of the bicycle 1.
The connecting bar 41, the band holder 43, and the band 44 constitute a connecting portion 40.

  A quick lever type fastener 52 is provided at the center of the lower connecting bar 51. The quick lever type fastener 52 has a U-shaped fitting piece 53, a pair of clamping plates 54, 54, and a quick lever 55. The fitting piece 53 is externally fitted to the handle post 13 of the bicycle 1 from the rear side, protrudes forward, and is inserted inside the clamping plates 54, 54, and then the fastening shaft 56 is inserted into these members 53, 54, 54. And screw it in. Then, when the quick lever 55 is tightened (fallen so as to follow the clamping plate 54), a pair of clamping is performed by the cam action of an eccentric cam (not shown) provided between the quick lever 55 and the clamping shaft 56. The plates 54, 54 tighten the fitting piece 53 from both sides, whereby the fitting piece 53 is fastened to the handle post 13.

The hole through which the clamping shaft 56 of the clamping plate 54 passes is a long hole 54a extending in the front-rear direction. Accordingly, the position of the clamping plate 54 can be adjusted back and forth with respect to the fitting piece 53. As a result, the position of the lower connection bar 51 can be adjusted back and forth around the upper connection bar 41. As a result, the angle of the hood device 2 can be adjusted around the connecting bar 41.
The connection bar 51 and the quick lever type fastener 52 constitute another connection part 50.

  A sheet 60 is stretched on a frame formed by the telescopic shaft 20 and the beams 31 to 33. The sheet 60 is made of a transparent resin such as polycarbonate. The sheet 60 has a crease (not shown), and when the telescopic shaft 20 is contracted from the extended state, the sheet 60 is naturally folded along the crease.

  A horizontally long case 70 is provided in front of the left and right shaft portions 24, 24. As shown in FIG. 6, a cover 71 is accommodated in the case 70. The cover 71 can cover the upper part of the hood device 2 when contracted.

  According to the hood device 2 configured as described above, as shown in FIGS. 2 and 3, the telescopic shaft 20 is contracted when not in use. The sheet 60 is in a folded state. Thereby, the hood device 2 can be made compact, and even if the hood device 1 is always provided in the bicycle 1, it does not get in the way. The height of the top beam 31 is about 10 cm above the handle and does not hinder the visibility. When not in use, the hood device 2 may be covered by removing the cover from the case 70.

As shown in FIG. 1, at the time of use, the shaft parts 21 to 23 from the first stage to the third stage are pulled out, and the telescopic shaft 20 is extended. Then, the upper stage shaft portions 21 to 23 gradually warp backward. As the telescopic shaft 20 extends, the sheet 60 is deployed. In this way, the hood device 2 is arched to cover the rider's head.
Thereby, it can use for rain protection. Therefore, it is not necessary to insert an umbrella while driving the bicycle 1 with one hand, and safety is improved. Since the hood device 2 is always provided in the bicycle 1, it can be deployed and used at any time as needed, which is highly convenient.
Since the hood device 2 has an arch shape that warps backward toward the upper side, wind resistance can be reduced.
Since the seat 60 is transparent, it does not hinder the visibility during driving.
The hood device 2 can be deployed from the front of the bicycle 1 so as to cover the upper part of the rider simply by extending the telescopic shaft 20, and a hinge or the like for deployment is unnecessary. Therefore, the number of parts can be reduced, and the cost and weight can be reduced.
By setting the radius of curvature R and the center position C of the telescopic shaft 20, the upper end of the hood device 2 can be positioned near the rider's head, and the function of preventing rain can be reliably exhibited. Since the entire hood device 2 has an arch shape with a large central angle, the aesthetic appearance is also excellent.
Since the beams 31 to 33 are curved upward, not only can the aesthetic appearance be further enhanced in combination with the arch-shaped form of the overall shape, but also the resistance to wind pressure and the like can be improved.
As shown in FIG. 4, the position of the lower connecting portion 50 can be adjusted back and forth by the slit 54 a of the quick lever type fastener 52, thereby adjusting the angle of the hood device 2 around the upper connecting portion 40. be able to. Since the distance from the upper connecting portion 40 to the top beam 31 at the time of deployment is sufficiently larger than the distance from the upper connecting portion 40 serving as the rotation fulcrum to the lower connecting portion 50, the connecting portion 50 is moved in the front-rear direction. By slightly adjusting the position of the top beam 31, the position of the top beam 31 can be greatly adjusted in the vertical direction. Accordingly, for example, when the rider is tall or standing, the top beam 31 is prevented from being raised and obstructed, or when the rider is small, the top beam 31 is lowered to approach the rider's body. can do.
As shown in FIG. 6, when not in use, the cover 71 is taken out from the case 70 to cover the hood device 2, thereby preventing adhesion and deterioration of dirt.

Next, other embodiments of the present invention will be described. In the following embodiments, the same components as those in the above-described embodiments will be denoted by the same reference numerals and description thereof will be omitted.
Second Embodiment FIG. 7 is a diagram showing an embodiment of applying the present invention to a bicycle 1A with child passenger 15. The left and right telescopic shafts 20 of the hood device 2 </ b> A for the bicycle 1 </ b> A are disposed at the left and right corners on the front side of the passenger car 15. As shown in FIGS. 8 and 9, a pair of upper and lower holding frames 81 and 82 are provided between the intermediate portions of the lowermost shaft portion 24 of the telescopic shaft 20. These holding frames 81 and 82 have a U shape and extend rearward from the shaft portion 24 and surround the left and right side surfaces and the rear side surface of the passenger car 15.

  As shown in FIG. 9, intermediate portions of the left and right frame portions 83 of the holding frames 81, 82 are connected and fixed to the left and right handle pipes 14 of the bicycle 1 </ b> A via connecting members 84. As shown in FIG. 8, the connecting member 84 is divided into a circular inner piece 85 and a circular outer piece 86. A longitudinal groove 85a having a semicircular cross section is formed in the inner piece 85, and a longitudinal portion of the handle pipe 14 is fitted into the longitudinal groove 85a. The outer piece 86 is overlaid on the inner piece 85, and the pieces 85, 86 are connected by a bolt 87, whereby the connecting member 84 is fixed to the handle pipe 14.

  As shown in FIG. 7, when deployed, the hood device 2 </ b> A draws an arch so as to extend upward from the front position of the passenger car 15 and gradually warp backward. Thereby, it is possible to reliably prevent the child of the passenger car 15 from getting wet in the rain.

The present invention is not limited to the above-described embodiment, and various modifications can be made within a range obvious to those skilled in the art.
For example, as a means for attaching the hood device 2 to the bicycle 1, the hood device 2 and the handle pipe 14 of the bicycle 1 are connected using a C-shaped bracket instead of the band 44, and the C-shaped bracket, bolt, You may decide to tighten with a nut.
In the first embodiment, the position of the upper connecting portion 40 can be adjusted forward and backward, and the position of the lower connecting portion 50 may be fixed. Both the upper and lower connecting portions 40 and 50 may be adjustable in position back and forth.
Instead of being folded at the time of accommodation, the sheet 60 is wound around a roll, and may be unwound from the roll at the time of unfolding. A spring may be provided on the roll, and the sheet 60 may be automatically wound by the force of the spring when the unfolded state is changed to the accommodated state.
The hood device 2 can be used not only in rainy weather but also in awning in fine weather.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows 1st Embodiment of this invention and shows the normal type bicycle which attached the hood apparatus in the state which expanded the said hood apparatus. It is a perspective view which shows the said hood apparatus in the accommodation state. It is the perspective view which looked at the front part of the above-mentioned bicycle from the back with the above-mentioned top device stored. It is sectional drawing explaining the locking mechanism and stopper mechanism of the shaft part of the said hood apparatus, (a) shows a locked state, (b) shows the state by which the lock | rock is cancelled | released. It is the side view which added the state of the upper limit and the lower limit by angle adjustment to the hood apparatus of the expansion | deployment state with the dashed-two dotted line. (A) is a front view of the hood apparatus in the state which covered the cover, (b) is the same side view. FIG. 6 is a perspective view of a bicycle with a child rider, showing a second embodiment of the present invention, to which a hood device for a bicycle with a child rider is attached. It is a perspective view which shows the said hood apparatus for bicycles with a child passenger car in the accommodation state. It is the perspective view which looked at the front part of the above-mentioned bicycle with children's bicycle from the back in the storage state of the above-mentioned bicycle hood device with children's bicycle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bicycle 1A Bicycle 11 Handle grip 12 Front basket 13 Handle post 14 Handle pipe 15 Passenger 2 Top device 2A Top device 20 Telescopic shaft 20c Locking convex part (stopper)
20d Step (stopper)
21 Uppermost stage shaft part 22 Second stage shaft part 23 Third stage shaft part 24 Lowermost stage shaft part 25 Lock mechanism 26 Spring 27 Ball 31 Top beam 32 Second stage beam 33 Third stage beam 34 Rib 40 Upper connecting part 41 Connection bar 43 Band holder 44 Band 50 Lower connection portion 51 Connection bar 52 Quick lever type fastener 53 Fitting piece 54 Holding plate 55 Quick lever 56 Fastening shaft 54a Long hole 60 Sheet 70 Case 71 Cover 81 Holding frame 82 Holding frame 83 Frame portion 84 Connecting portion C Center of radius of curvature

Claims (5)

A hood device that is installed at the front of the bicycle and can be deployed to cover the rider's head,
A pair of telescopic shafts consisting of multiple stages of shafts with the same radius of curvature are provided on the left and right, and a beam is bridged between the distal ends of the same stage of the left and right telescopic shafts. And a bicycle hood device, wherein a seat is stretched in a frame made of a beam so that the seat can be expanded and contracted.   The bicycle hood device according to claim 1, wherein the radius of curvature is 700 to 1000 mm.   The bicycle hood device according to claim 2, wherein the radius of curvature is 800 to 850 mm.   The bicycle hood device according to claim 2 or 3, wherein the center of the radius of curvature is located substantially in the vicinity of the saddle of the bicycle.   The lowermost shaft portion of the telescopic shaft is provided with a pair of upper and lower connecting portions, which are connected to the bicycle, respectively, and the position of the other connecting portion can be adjusted back and forth with respect to one connecting portion. The bicycle hood device according to any one of claims 1 to 4.

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