JP7158020B2 - Bicycle front child seat and handle structure of a bicycle to which this bicycle front child seat is mounted - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bicycle front child seat attached to a handlebar on the front side of a bicycle, and to a bicycle handle structure on which the bicycle front child seat is preferably mounted.

When going out with a child on a bicycle, it is common for the child to be seated in a child carrier attached to the front or rear carrier of the bicycle.
Patent Document 1 discloses a technique for such a child seat for a bicycle (also called a child seat, a child seat, a seat for a child, a seat for an infant, etc.).
The child bicycle seat disclosed in Patent Document 1 is a seat attached to the front side of the bicycle and attached to the handlebar of the bicycle. and the bottom of the seat is attached to the bicycle with bolts or the like. This seat includes a seat body, a leg rest member provided on the front lower side of the seat body, a headrest provided on the rear end side of the seat body, and a grip bar provided on the front upper part of the seat body. It has

When putting a child on this seat, for example, the driver (adult) of the bicycle picks up the child and lifts it upwards, and the driver moves the child so that the child is vertically above the child bicycle seat at that height. Approaching the bicycle, the driver lowers the child and places the child on the seat body.

JP 2011-88536 A

The front child seat for a bicycle disclosed in the above-mentioned Patent Document 1 allows a child to be safely and comfortably mounted while an adult can operate the bicycle in that state.
However, the weight of a child riding a front child seat for a bicycle is often around 10 kg, and a relatively heavy object is mounted near the handle of the bicycle. There was concern that it would lead to a decline in sex.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a front child seat for a bicycle that allows a child to ride safely and comfortably without impairing the operability of the bicycle. Another object of the present invention is to provide a handle structure for a bicycle on which the front child seat for a bicycle is suitably mounted.

In order to solve the above problems, the front child seat for bicycles has the following technical measures.
That is, the front child seat for a bicycle of the present invention includes a seat body having a seat portion on which a child sits facing forward and a backrest portion provided at the rear end of the seat portion; , and a mounting part that can be attached to an extension part that is extended so as to be offset from the stem of a bicycle, a side plate that is provided on the side of the seat body so as to face in the vertical direction, and the side plate and a headrest that is provided above the seat body and is vertically movable with respect to the side plate, the side plate having a first side plate and a second side plate, a footrest provided at the lower end of the side plate on which the feet of a child sitting on the seat can be placed; and a footrest extending upward from the upper end of the side plate. It has a second side plate and a headrest that moves vertically with respect to the second side plate, and the first side plate is provided on each of left and right sides of the seat portion. The second side plate extends upward from each of the first side plates, and the headrest includes headrest side plates disposed on the left and right sides and extending vertically with respect to the second side plate, and from the headrest side plate. and a headrest plate that extends continuously and connects upper ends of the headrest side plates in the left-right direction .

Preferably, the headrest side plate and the headrest plate are formed integrally.
Preferably, the headrest side plate is vertically movable with respect to the second side plate, and the vertical position of the headrest is made variable by moving the headrest side plate vertically with respect to the second side plate. It is good to have a structure that

Preferably, the second side plate is formed with engaging teeth in a vertical direction, and the headrest side plate is provided with an engaging piece capable of fixing the vertical position of the headrest by being engaged with the engaging teeth. should be provided.
In order to solve the above problems, the handle structure of the bicycle takes the following technical means.
That is, the bicycle handlebar structure of the present invention is a bicycle handlebar structure to which the above-described bicycle front child seat is attached, comprising a stem provided on an upper portion of a front fork that rotatably supports a front wheel of the bicycle; an extension portion that extends offset from the stem; a handle pole that extends upward from the extension portion; and a handlebar extending to the stem, wherein the child seat is integrated with the stem by attaching an attachment portion formed on the lower surface of the seat portion to the extension portion. and

According to the bicycle front child seat and bicycle handle structure of the present invention, a child can be safely and comfortably seated on the bicycle without impairing the operability of the bicycle.

1 is a front perspective view showing the appearance of a front child seat for a bicycle; FIG. FIG. 11 is a side view showing the appearance of the front child seat for a bicycle; Fig. 2 is a cross-sectional side view of a front child seat for a bicycle; Fig. 2 is a rear perspective view showing the appearance of the front child seat for a bicycle; It is a perspective view which shows the aspect which pulls up a headrest upwards. It is an expansion perspective view which shows the aspect which pulls up a headrest upwards. FIG. 4 is a cross-sectional view showing a positioning mechanism provided on the headrest;

Hereinafter, the front child seat 1 for a bicycle and the handle structure according to the present invention will be described in detail with reference to the drawings.
In the description, the front-rear direction is the same direction as the traveling direction of the bicycle, and the left-right direction and the up-down direction are the left-right direction and the up-down direction as seen from the rider of the bicycle. The front child seat 1 for bicycles is sometimes simply referred to as a "child seat".

A user who rides on the front child bicycle seat 1 is referred to as a "child", and a user who rides a bicycle to which the front child seat 1 is attached is referred to as an "adult".
As shown in FIGS. 1 to 3, the child seat 1 is disposed between the handlebars 4 of the bicycle and substantially above the stem 5 (threaded stem). The bicycle can be run with a child on it.

The bicycle for which the child seat 1 according to the present embodiment is preferably used is a general bicycle except for the structure of the handlebar 4 (details will be described later). , and a saddle for an adult operating the bicycle to sit on is provided approximately in the center of the bicycle frame in the front-rear direction. Pedals and gears are provided on the frame portion located below the saddle, and the rotational driving force generated by turning the pedals is transmitted to the rear wheel by a chain or the like, and becomes the propulsion force of the bicycle. There is no problem even if the bicycle is equipped with an electric assist function.

The child seat 1 of the present invention has a seat body 10 on which a child sits. The seat body 10 has an open shape facing forward so that a child facing forward can sit on it. The seat body 10 is composed of a seat portion 11 on which the buttocks of a child seated facing forward is placed, and a backrest portion 12 provided so as to stand up from the rear end of the seat portion 11, so that both left and right sides of the seated child can be supported. Seat side walls 13 are also provided so as to stand up on both left and right sides of the seat portion 11 so as to surround it. A cushion material made of urethane or the like is arranged on the inner surface side (the side facing the child) of the seat portion 11, the backrest portion 12, and the side wall 13 of the seat.

As shown in FIG. 3, at the bottom of the seat body 10, more specifically, at the front of the bottom surface of the seat 11 and at the center in the left-right direction, a second extension is provided on the stem 5 via the first extension 14A. A mounting portion 15 that can be mounted so as to be fitted from above is formed with respect to the extension portion 14B (details will be described later).
The mounting portion 15 has an inverted concave shape with an opening at the bottom, and is fitted into the second extending portion 14B from above without a gap. The mounting portion 15 is fitted into the second extending portion 14B from above, and the mounting portion 15 and the second extending portion 14B are tightened together with fasteners such as bolts so that the two are integrated, whereby the bicycle and the child seat are provided. 1 becomes one.

Further, as shown in FIG. 1 and the like, the child seat 1 is provided with a first side plate 16 that hangs downward on the side of the seat body 10 . Specifically, on each of the seat side walls 13 provided on the left and right sides, a strip-shaped first side plate 16 is provided so as to extend downward and forward from the outer side of the seat side wall 13 while being inclined. The front-rear width of the first side plate 16 is approximately half of the front-rear length of the seat side wall 13, and the vertical length of the first side plate 16 overlaps the first side plate 16 at about 1/3 of the vertical length. Approximately ⅔ of the vertical length of the first side plate 16 extends below the seat portion 11 . The forward inclination angle of the first side plate 16 is about 20 degrees forward from the vertical line.

The lower end of the first side plate 16 is bent horizontally so as to face inward in the left-right direction. A mounting portion 17 is provided. Specifically, the lower end of the first side plate 16 (the right side first side plate 16R) located on the right side of the seat 11 is horizontally bent so as to face left, so that the child's right foot can be placed thereon. It's becoming The lower end of the first side plate 16 (first left side plate 16L) located on the left side of the seat 11 is horizontally bent to face the right side, and the child's left foot can be placed thereon. .

In addition, as shown in FIG. 4, the right footrest portion 17R and the left footrest portion 17L are connected by a support side plate 18 extending in the horizontal direction. The support side plate 18 is attached to the lower end portion and the trailing edge end of the first side plate 16, and connects the lower ends of the first side plates 16 located on the left and right sides. The support side plate 18 increases the rigidity of the first side plate 16 and prevents inconvenience such as the lower end of the first side plate 16 from wobbling. In addition, since the support side plate 18 also functions as a baffle plate that closes the rear end side of the footrest portion 17, the child's foot moves rearward, causing the foot to come off the footrest portion 17, which is inconvenient. It is designed to prevent

The support side plate 18 of the present embodiment is bent forward in a convex shape at the central portion in the left-right direction, thereby increasing the rigidity of the support side plate 18 and 17 sides are also wrapped.
On the other hand, a second side plate 19 extends from the upper end of the first side plate 16 with the same inclination as the first side plate 16 so as to extend the first side plate 16 .

The front-to-rear width of the second side plate 19 is slightly smaller than that of the first side plate 16, and in the present embodiment, the second side plate 19 is fitted inside the first side plate 16 from its end portion. It's becoming The upper end of the second side plate 19 extends to a position slightly beyond the upper end of the backrest portion 12 of the seat body 10 .
In addition, the first side plate 16 and the second side plate 19 may be configured to be separately manufactured members joined together, but may be integrally formed. In the case of integral molding, the lower side of the side plate corresponds to the first side plate 16 and the upper side of the side plate corresponds to the second side plate 19 .

Further, the upper end of the second side plate 19 is provided with a headrest 20 for protecting the child's head from external impact.
Specifically, the headrest 20 is composed of a headrest plate 21 that protects the back of the head of a child sitting on the seat 11, and a headrest side plate 22 that protects the sides of the head of the child sitting on the seat 11 and the vicinity thereof. . The headrest plate 21 and the headrest side plate 22 are integrally formed so as to be continuous.

Specifically, as shown in FIG. 2 and the like, the second side plate 19 extends upward from the upper end portion of the second side plate 19, and then the headrest side plate has a shape that curves rearward in an arc shape when viewed from the side. 22 are provided. The headrest side plates 22 are arranged on both left and right sides of the seat portion 11, respectively. The lower end of the headrest side plate 22 is fitted into the upper end of the second side plate 19 in a mantle shape, and the headrest side plate 22 is vertically slidable with respect to the second side plate 19 . That is, the headrest side plate 22 is telescopically fitted into the second side plate 19, and can move up and down.

The headrest plate 21 extends horizontally from the upper end (the end facing the rear) of the headrest side plate 22 . Specifically, as shown in FIG. 3, the headrest plate 21 extends rightward from the upper end of the left headrest side plate 22 and connects to the upper end of the headrest side plate 22 located on the right side. The headrest plate 21 is a belt-like plate having substantially the same width as the headrest side plate 22, and is arranged so that the flat portion faces forward and backward.

The left and right headrest side plates 22 and the headrest plate 21 are integrally formed into a continuous strip to form a headrest 20. The headrest 20 has a U-shape when viewed from above. The tilt of the rear wall of the headrest plate 21 and the tilt of the first side plate 16 are substantially the same, and the tilt of the backrest portion 12 is also the same. In other words, the rear wall of the headrest plate 21 is positioned at a position where the backrest portion 12 is tilted and extended upward, so that the seat body 10 having a compact and simple appearance is realized. .

A cushioning material 23 made of urethane or styrofoam is provided on the inner surface (the side facing the child) of the U-shaped headrest 20 to enhance the effect of the headrest 20. - 特許庁In this way, by adopting the configuration in which the headrest plate 21 is connected by the two left and right headrest side plates 22, a strong headrest 20 can be realized and the user can feel a sense of security as if the right and left sides to the back of the head are wrapped. The headrest 20 can be realized.

The legless chair main body, the first side plate 16, the second side plate 19, and the headrest 20 described above are preferably made of plastic, but there is no problem if they are made of other materials.
The headrest 20 described above is adjustable in vertical position according to the physique and head position of the child.
Specifically, as described above, the lower end of the headrest side plate 22 is fitted into the upper end of the second side plate 19 in a mantle shape, and the headrest side plate 22 slides relative to the second side plate 19 to change its position in the vertical direction. It is free. Therefore, by sliding the headrest side plate 22 upward with respect to the second side plate 19, the headrest plate 21 is moved upward, and conversely, by sliding the headrest side plate 22 downward with respect to the second side plate 19, the headrest By moving the plate 21 downward, it is possible to arrange the headrest 20 at an appropriate position according to the user's physique and head position.

In this embodiment, a positioning mechanism for positioning and fixing the headrest 20 with respect to the second side plate 19 is provided. This positioning mechanism has an operating lever 25 and an engaging tooth 26 with which the operating lever 25 engages.
As shown in FIGS. 6 and 7, on the lower side surfaces (outer side surfaces) of the headrest side plates 22 arranged on the left and right sides, there are provided operation levers 25 for allowing the headrest 20 to slide or for fixing the position of the headrest 20. ing.

The operation lever 25 has a plate-like operation piece 27 that is long in the front-rear direction and an engagement piece 28 that extends from the upper side of the operation piece 27 so as to be substantially orthogonal. The operating piece 27 and the engaging piece 28 are integrally formed of plastic or the like, and have an L-shaped cross section in the left-right direction. It is attached to the lower side surface of the headrest side plate 22 so that the joint portion (joint side) between the operation piece 27 and the engagement piece 28 faces the front-rear direction, and is rotated by providing an axis penetrating the joint side. The operating piece 27 can be changed from flush with the lower side surface of the headrest side plate 22 to protruding from the lower side surface.

When the operating piece 27 is flush with the lower side surface of the headrest side plate 22 , the engaging piece 28 faces the second side plate 19 . A plurality of engaging teeth 26 directed in the front-rear direction are formed in the vertical direction on the outer surface of the second side plate 19, and the engaging teeth 26 have a ladder shape. The engagement piece 28 meshes with the engagement tooth 26 so that the headrest side plate 22 cannot slide with respect to the second side plate 19 (fixed state). Therefore, the vertical position of the headrest 20 is fixed at this position, and the height of the headrest 20 can be adjusted.

Conversely, when the operation piece 27 is pulled out so as to protrude from the lower side surface of the headrest side plate 22, the engagement piece 28 is separated from the second side plate 19 and faces downward. In this state, the engaging piece 28 is disengaged from the engaging tooth 26 formed on the second side plate 19 , so that the headrest side plate 22 can slide vertically with respect to the second side plate 19 . In this state, as shown in FIG. 5, for example, the headrest 20 can be drawn upward. When pulling out, stand on the rear side of the headrest 20 (rear side of the seat body 10), and from that position, use the right and left hands of an adult to operate the right headrest side plate 22 operation piece 27 and the left headrest side plate 22 operation piece 27. and slide the headrest 20, the position of the headrest 20 can be easily changed.

As shown in FIG. 1 and the like, the seat body 10 and the headrest 20 described above are positioned behind the handle 4 of the bicycle to which it is attached. On the other hand, in the present embodiment, a luggage basket (luggage basket 30) is attached in front of the handle 4. As shown in FIG.
The cargo basket 30 is attached to the tip of the first extension portion 14A, which will be described later. Specifically, a mounting plate 39 extends forward from the upper front side of the first extension portion 14A, and the rear wall 31 of the cargo basket 30 is attached to the tip of the extending mounting plate 39. there is

The luggage basket 30 has a substantially cubic shape with an open upper surface. A load can be put in and taken out of the luggage basket 30 through this open side (opening).
A portion of the rear wall 31 of the luggage basket 30, which is approximately in the center in the horizontal direction and approximately in the center in the vertical direction, is attached to the tip of a mounting plate 39 via fasteners such as bolts, thereby separating the luggage basket 30 from the bicycle. Become one. The lower part of the rear wall 31 of the luggage basket 30 is cut so as to be inclined forward, and has a structure that prevents it from interfering with the first side plate 16 . A plurality of openings 38 are formed in the front wall 32 and side walls 33 of the luggage basket 30, which contributes to weight reduction of the luggage basket 30 itself and reduction of wind resistance during traveling.

Although the child seat 1 described above can be attached to a general bicycle, it is preferably attached to a bicycle having a handle structure described below.
A bicycle suitable for the child carrier 1 is characterized by its handle structure, and other structures may be similar to ordinary bicycles. That is, the front wheel 37 and the rear wheel are rotatably attached to the front and rear of the bicycle frame, respectively, and a saddle for an adult operating the bicycle to sit on is provided approximately in the center of the bicycle frame in the front-rear direction. Pedals and gears are provided on the frame portion located below the saddle, and the rotational driving force generated by turning the pedals is transmitted to the rear wheel by a chain or the like, and becomes the propulsion force of the bicycle. There is no problem even if the bicycle is equipped with an electric assist function.

On the other hand, in the preferred handle structure, first, a stem 5 (threaded stem) pointing substantially upward is arranged at the upper end of the front fork 24 that rotatably supports the front wheel 37 . A first extending portion 14A is attached to the stem 5 so as to extend forward and slightly upward. The first extending portion 14A has a rectangular cross-section and a rectangular parallelepiped outer shape, and has a shape obtained by extending the front end of the down tube 40 as it is, but it is not limited thereto. A handle pole 34 is provided so as to face upward from the tip of the upper surface of the first extending portion 14A. The upper end of the handle pole 34 is the front opening of the seat body 10 and reaches the front of the backrest portion 12 in a side view.

A second extension portion 14B (extension portion) extending rearward from the handle pole 34 is provided above the first extension portion 14A on the base end side of the handle pole 34. ing. The second extension portion 14B has a rectangular cross-section and a rectangular parallelepiped outer shape, and extends rearward so as to pass above the stem 5 . That is, the second extending portion 14B is arranged directly above the stem 5. As shown in FIG.

The mounting portion 15 is fitted into the second extension portion 14B from above, and the mounting portion 15 and the second extension portion 14B are tightened together with fasteners such as bolts so that the two are integrated, so that the bicycle and the child can be connected. Ride 1 is integrated.
In this way, the seat portion 11 is arranged on the upper side of the second extension portion 14B, in other words, the seat body 10 is positioned substantially above the stem 5, so that a child (weight of about 10 kg) can be placed on the child seat. Even so, the center of gravity is mounted in the vicinity of the handle 4 of the bicycle, so that it is possible to prevent the bicycle from wobbling at the beginning of pedaling and to prevent deterioration of steering performance during running as much as possible.

On the other hand, a handlebar 35 is attached to the upper end of the handlebar 34 so as to extend in the left-right direction. Specifically, a handle bar 35 extends left and right from the upper end of the handle pole 34 , and the handle bar 35 extends rearward along the outer side of the headrest side plate 22 along the outer surface of the headrest side plate 22 . It is designed to terminate at a position where it has passed. A grip 36 made of rubber or plastic is provided at the terminal end to improve the gripping feeling of the handle 4 by an adult.

A portion of the handle bar 35 extending in the left-right direction from the upper end of the handle pole 34 is provided with a grip 41 that can be gripped by a child seated on the seat body 10, serving as a grip for the child. ing. In other words, the handle bar 35 functions as a grip for children.
In addition, since the horizontal portion of the handlebar 35 is arranged in front of the front opening of the seat body 10, it also functions as a safety bar to prevent a child from jumping forward in case of emergency. It's becoming

In this way, the seat portion 11 is arranged on the upper side of the extension portion (second extension portion 14B), in other words, the seat body 10 is positioned substantially above the stem 5, so that a child (whose weight is 10 kg), the center of gravity will be mounted near the handlebar 4 of the bicycle, so that the bicycle can be prevented from swaying at the beginning of pedaling, and the deterioration of steering performance during running can be prevented as much as possible. become. It should be noted that the bicycle and the child carrier 1 can also be integrated by eliminating the second extension portion 14B and attaching the attachment portion 15 to the first extension portion 14A. becomes possible.

As described above, by providing the front child seat 1 for a bicycle of the present invention and a handle structure on which the child seat 1 can be installed, even when a child is put on the bicycle, the child can be safely boarded. Moreover, it is possible to obtain the effect of not impairing the operability of the bicycle.
It should be noted that the embodiments disclosed this time should be considered as examples and not restrictive in all respects. In particular, in the embodiments disclosed this time, matters not explicitly disclosed, such as operating conditions, various parameters, dimensions of components, weights, volumes, etc., do not deviate from the scope normally practiced by those skilled in the art. Instead, values that can be easily assumed by those of ordinary skill in the art are adopted.

1 Bicycle Front Child Seat 4 Handle 5 Stem 10 Seat Body 11 Seat 12 Backrest 13 Seat Side Wall 14A First Extension 14B Second Extension 15 Attachment 16 First Side Plate 17 Footrest 18 Support Side Plate 19 No. Two side plates 20 Headrest 21 Headrest plate 22 Headrest side plate 23 Cushioning material 24 Front fork 25 Operation lever 26 Engagement tooth 27 Operation piece 28 Engagement piece 30 Luggage basket 31 Rear wall 32 Front wall 33 Side wall 34 Handle pole 35 Handle bar 36 Grip ( For adults)
37 front wheel 38 multiple openings 39 mounting plate 40 down tube 41 grip (for children)

Claims (5)

A seat body having a seat on which a child is seated facing forward and a backrest provided at the rear end of the seat; a mounting portion that can be attached to the extending portion formed by the seat body; a side plate that is provided on the side of the seat body so as to face in the vertical direction; a vertically movable headrest ,
The side plate has a first side plate and a second side plate, and the first side plate is provided in a hanging shape on the side of the seat body, and the side plate is provided at the lower end of the side plate and a child sitting on the seat. a footrest on which a foot can be placed, a second side plate extending upward from the upper end of the side plate, and a headrest slidably moving in the vertical direction with respect to the second side plate,
The first side plate is provided on each of the left and right sides of the seat portion, the second side plate extends upward from each of the left and right first side plates, and the headrest is provided on the left and right sides. and a headrest side plate that extends vertically with respect to the second side plate; and a headrest plate that extends continuously from the headrest side plate and connects upper ends of the headrest side plates in the left-right direction.
A front child seat for a bicycle characterized by: The front child seat for a bicycle according to claim 1 , wherein the headrest side plate and the headrest plate are integrally formed. The headrest side plate is vertically movable with respect to the second side plate, and the vertical position of the headrest is made variable by moving the headrest side plate vertically with respect to the second side plate. A front child seat for a bicycle according to claim 1 or 2 , characterized in that it has a structure. Engagement teeth are vertically formed on the second side plate,
4. The headrest side plate according to any one of claims 1 to 3 , wherein an engagement piece is provided on the side plate of the headrest so that the vertical position of the headrest can be fixed by engaging with the engagement tooth. Front child seat for bicycles. A handle structure for a bicycle to which the front child seat for a bicycle according to any one of claims 1 to 4 is attached,
a stem provided on an upper portion of a front fork that rotatably supports the front wheel of the bicycle;
an extension part extending so as to be offset from the stem;
a handle pole extending upward from the extension;
a handle bar extending in the left-right direction from the upper end of the handle pole and extending along the side of the child seat;
A handle structure for a bicycle, wherein the child seat is integrated with the stem by attaching a mounting portion formed on the lower surface of the seat portion to the extending portion.

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