JP2007302228A - Child seat for bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a child seat 1 for a bicycle capable of mounting a seat body 1A to put a child on it at a lower position as far front as possible near a handle stem 3. <P>SOLUTION: This child seat for the bicycle is furnished with a mounting means 5 to mount the seat body 1A on the handle stem 3, the seat body 1A is furnished with child thigh supporting parts 1g extending to the front side from front part left and right both sides of a seat part 1a', the mounting means 5 is furnished with a mounting seat part 5b provided on the side of the seat body 1A and a mounting member 5c mounted and fixed on this mounting seat part 5b free to connect to and disconnect from and to mount and fix the seat body 1A on the handle stem 3 by clamping the handle stem with the mounting seat part 5b, and the mounting seat part 5b of the mounting means 5 is arranged between the left and right child thigh supporting parts 1g and on the base end sides of the child thigh supporting parts 1g. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bicycle infant seat attached to the front of a bicycle.

2. Description of the Related Art Conventionally, a bicycle infant seat attached to the front portion of a bicycle includes a seat body for carrying an infant and attachment means for attaching the seat body to a bicycle handle stem (see Patent Document 1). .
In the infant seat described in Patent Document 1, the attachment means includes a pair of front and rear clamping bodies that sandwich the handle stem and are fixed to the handle stem, and the seat portion of the seat body includes the attachment means. It is supported by a support stay that extends rearward and upward from the rear clamping body.
Japanese Utility Model Publication No. 51-140943

In the conventional infant seat, the seat portion of the seat body is located at a relatively high position and is located at a position relatively away from the handle stem, and when the infant is placed on the seat body. There is a problem of poor stability.
In this conventional infant seat, if the seat body is lowered for stabilization, there arises a problem that the step or the infant's foot interferes with the bicycle frame when the handle is turned.
In addition, in the conventional infant seat, since it is separated rearward from the handle stem, the distance between the rear end of the infant seat and the front end of the saddle is narrow, and when the driver gets on and off by turning his / her foot from the front side of the saddle There is also the problem of hindering.

  The present invention has been developed in view of the above-mentioned problems of the prior art, and the object of the present invention is a bicycle in which the seat body can be brought close to the handle stem as close to the front as possible and attached to a low position. Is to provide infant seats for children.

In order to achieve the above object, the present invention comprises a seat body for carrying an infant and attachment means for attaching the seat body to a bicycle. An infant thigh support portion extending, and the attachment means has a seat portion of a seat body positioned on a rear side of a handlebar stem of a bicycle, and the infant thigh support portion extends to the front side of the handle stem on both the left and right sides of the handle stem. The seat body is attached to a bicycle so as to be arranged as described above.
In order to achieve the above object, the present invention comprises a seat main body for carrying an infant, and attachment means for attaching the seat main body to a handlebar stem of a bicycle, wherein the seat main body has a front left and right sides of the seat portion. An infant thigh support part extending from both sides to the front side is provided, and the attachment means is detachably attached and fixed to the attachment seat part provided on the seat main body side, and the handle seat with the attachment seat part. And an attachment member for attaching and fixing the seat body to the handle stem by being sandwiched, the seat portion of the seat body is located on the rear side of the handle stem, and the infant thigh support portion is on both the left and right sides of the handle stem. The attachment seat portion of the attachment means is arranged between the left and right infant thigh support portions and at the proximal end side of the infant thigh support portion so as to be extended to the front side.

According to the above configuration, the seat body can be mounted close to the handle stem as close to the front as possible, and can be mounted at a low position. The space between the main body and the driver can be widened.
In addition, it is preferable to provide an attachment angle adjusting means capable of adjusting the attachment angle with respect to the handle stem so that the seating surface of the seat main body has an appropriate angle when the passenger gets on the vehicle.
According to the above configuration, it is possible to attach to a variety of bicycles in which the standing angle of the handle stem is not uniform and the forward displacement dimension of the handle bar with respect to the handle stem is uniform while maintaining a proper riding posture of the infant. it can.

The angle adjusting means may be provided between the handle stem and the attaching means or between the seat body and the attaching means.
The attachment angle adjusting means includes a spacer member interposed between the handle stem and the attachment seat portion and between the handle stem and the attachment member, and one spacer member and the other spacer member are provided. It is preferable that the mounting angle of the seat body with respect to the handle stem is adjustable.
According to the above configuration, the infant seat can be simplified.

The spacer member is formed such that a mounting surface of one spacer member or a contact surface with respect to the mounting member is inclined with respect to an axial direction of the handle stem with respect to a mounting seat portion of the other spacer member or the mounting surface with respect to the mounting member. Is done.
The mounting means includes a base member to which the mounting seat portion is fixed, and the base member includes a pivot portion that supports the bottom portion of the seat body so as to be swingable about a horizontal axis parallel to the front axle of the bicycle. The mounting angle adjusting means may be configured such that the mounting angle with respect to the handlebar stem can be adjusted by swinging the seat body about the horizontal axis.

According to the above configuration, regardless of the standing angle of the handle stem and the forward displacement dimension of the handle bar, the infant seat is positioned at an appropriate angle by the mounting angle adjusting means with respect to the mounting means fixed to the handle stem. Can be easily adjusted and attached.
The attachment angle adjusting means includes an engagement hole, an engagement protrusion that is movably engaged with the engagement hole in the angle adjustment direction, and the engagement protrusion is connected to the engagement hole. And a locking member that is positioned and fixed within the section, and one of the engagement hole and the engagement protrusion may be provided on the attachment means, and the other may be provided on the seat body.

According to the above configuration, the configuration of the mounting angle adjusting means is simplified, and the infant seat can be firmly and stably fixed and held in a state where the infant seat is adjusted to an appropriate mounting angle.
The infant seat may be configured so that a forehead attached to a front portion of a bicycle is also used as a step member that accommodates the front ends of both feet of the infant.
According to the above configuration, the infant seat can be put out as far as possible and attached, and the above-described effects can be obtained. While being able to protect, the step part of an infant seat can be omitted and the structure of the whole infant seat can be simplified.

The forehead body has an opening for inserting both feet of an infant on at least the rear wall thereof, and the inside of the forehead body closes the opening to make the entire inside of the forehead body a luggage storage space; It is preferable to provide a plate-like member that can be changed to a state in which the opening is opened and the inside of the forehead main body is partitioned into a storage space for the front end of both feet of the infant and a luggage storage space.
According to the above configuration, when the infant is not carried, the entire inside of the forehead body can be used as a luggage storage space. It can be divided into spaces and used.

The seat body may be provided with a handle for an infant to be gripped by an infant seated on a seat of the seat body.
According to the above configuration, since the infant handle is provided at the front of the seat body, the infant can be seated on the seat body in a more stable state, and the infant's posture can be stabilized particularly during bicycle riding. Can be made.
It is preferable that a temporary positioning portion that determines a position with respect to the mounting seat portion by being hooked on the mounting member is provided on the mounting seat portion side.

According to the above configuration, when the infant seat is attached to the bicycle, that is, when the attachment member is attached to the attachment seat portion, the attachment member can be easily positioned with respect to the attachment seat portion. There is no need to perform attachment work between the part and the attachment member. That is, since both the positions of the mounting seat and the mounting member are maintained, both hands of the operator can be used during the mounting operation (tightening operation), and the mounting operation is very easy to perform.
Between the mounting seat side and the spacer member arranged on the mounting seat side, and between the mounting member and the spacer member arranged on the mounting member side, the respective spacer members are located with respect to the handle stem. It is preferable that a position holding means for holding the position is provided.

According to the above configuration, since the spacer member can be prevented from being displaced with respect to the handle stem after the attachment member is attached to the attachment seat portion, the attachment angle of the seat body can be reliably maintained. Further, since the spacer member does not fall off from the handle stem, it is very easy to perform the mounting operation between the mounting seat and the mounting member.
A safety belt that prevents the seat body from falling off the bicycle by being attached to the handlebar and / or the handle stem provided on the upper side of the handle stem is provided on the seat body side separately from the attachment means. The safety belt may be provided on the seat body side so that the length can be adjusted after the handle bar and / or the handle stem is attached.

According to the above configuration, the attachment position of the safety belt with respect to the handle bar or the handle stem can be changed.
In the front heel body, the front end side of the plate-like member is placed on the bottom wall of the front heel body so as to maintain a state in which the inside of the front heel body is partitioned into a storage space for a front end of both feet and a luggage storage space. It is preferable to provide a lock mechanism for engaging the part.
According to the said structure, the inside of a forehead main body can be reliably hold | maintained by the plate-shaped member in the accommodation space and luggage storage space of the infant's both feet front-end | tip part.

A front hook mounting member for mounting the front hook main body to a lamp hanging stay fixed to the handle stem, the front hook mounting member including a first mounting portion mounted on the lamp hanging stay side; And a second mounting portion for mounting and fixing the front rod on the lamp hanging stay side by being attached to the first mounting portion with the rod sandwiched therebetween, and the first mounting portion is connected to the second mounting portion from the front rod. It is good to be comprised so that attachment fixation is possible.
According to the above configuration, the second mounting portion can be fixed from inside the front heel, and the front heel can be attached after the infant seat is attached. In the past, if you tried to install the front wing after attaching the infant seat, there is not enough space between the infant seat and the front limb, and it is not possible to attach a fastener such as a bolt between the spaces. It was very difficult. In the present invention, since the second mounting portion can be mounted and fixed from the inside of the forehead, the forehead can be attached regardless of the space, and the forehead is easily attached.

Connecting means for connecting the front part of the seat main body and the rear part of the front saddle main body is provided, and this connecting means attaches both even if the relative position of the seat main body and the front saddle main body changes. It is good to have a connecting part that can be used.
According to the above configuration, for example, both of the vertical length and front / rear position of the handle stem, the protrusion length of the ramp hanging stay and the vertical position of the bicycle are different, and the two positions are adjusted while adjusting the mutual position of the front and infant seats. Can be attached to the bicycle.

  According to the present invention, the seat body is provided with the infant thigh support portion extending forward from the left and right sides of the front portion of the seat portion, and between the left and right infant thigh support portions and the proximal end of the infant thigh support portion Since the mounting seat for attaching the seat body to the handle stem is located on the side, the seat body is mounted so that the handle stem is positioned between the left and right infant thigh support sections and on the proximal end side of the infant thigh time support section Therefore, the seat body can be attached as close to the handle stem as possible as close to the front as possible, and can be attached to a low position. Can be put on stably, and the space between the seat body and the driver can be widened.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3, reference numeral 1 denotes an infant seat, and 2 denotes a forehead.
As shown in FIGS. 4 to 6, the infant seat 1 includes attachment angle adjusting means 4 that can adjust the attachment angle with respect to the handle stem 3 so that the seating surface 1 a is at an appropriate angle when the passenger rides.
More specifically, the infant seat 1 includes a seat main body 1A for carrying an infant, attachment means 5 fixed to the handle stem 3, and the infant seat 1 with respect to the attachment means 5 and a front axle 6 of a bicycle. There is provided an attachment angle adjusting means 4 for adjusting and fixing to an appropriate attachment angle around the axis of the parallel horizontal shaft 7.

As shown in FIGS. 4, 8, and 9, the attachment means 5 has a plate-like base member 5 a whose rear end projects rearward in a semicircular arc shape and whose front end is a straight line. . A mounting seat 5b for the handle stem 3 is formed upright at the center of the front end of the plate-like base member 5a. The mounting means 5 is combined with the mounting seat 5b to connect the mounting means 5 to the handle stem. 3 includes a mounting member 5c that is detachably fixed via a plurality of fastening members (not shown) such as mounting screws (illustrated in the case of four). Reference numeral 5d denotes a mounting screw hole.
When the attachment means 5 is fixed to the handle stem 3, as shown in FIGS. 7 and 8, the attachment seat portion 5b and the attachment member 5c are provided with anti-rotation sleeves 8a and 8b such as rubber cylinders divided into two parts. However, as shown in FIG. 9, the mounting member 5 c may be provided with a recess 5 e that engages with the ramp hanging stay 9 mounted on the handle stem 3 to prevent the mounting means 5 from rotating. .

  Further, as shown in FIG. 10, an insertion hole 5f of a safety belt 10 having a buckle 10a at one end is formed in a part of the attachment seat portion 5b or the attachment member 5c, and the safety belt 10 is inserted into the insertion hole 5f. As shown in FIG. 11, the infant seat 1 is suspended and supported by the handle bar 11 by the safety belt 10 by being wrapped around the intersection of the handle stem 3 and the handle bar 11 and tightened with the buckle 10a. In the unlikely event that the fixing state of the mounting means 5 to the handle stem 3 by the mounting seat 5b and the mounting member 5c is damaged or destroyed, the infant seat 1 is prevented from falling off to ensure safety. You may make it do.

Further, a pivotal support portion 5g for supporting a hinge protrusion 1b formed to protrude downward on the bottom of the seat body 1A so as to be swingable about the axis of the horizontal shaft 7 is near the front end of the plate-like base member 5a. It is formed in two places on the left and right as recesses. The hinge protrusion 1b and the pivot support 5g are provided with shaft holes 1c and 5h through which the horizontal shaft 7 is inserted.
Further, an angle adjusting means mounting portion 5i is formed at the center in the left-right direction near the rear end of the plate-like base member 5a.
As shown in FIGS. 4 to 6, the attachment angle adjusting means 4 includes an engagement hole 4a and an engagement protrusion 4b that engages with the engagement hole 4a so as to be movable in the angle adjustment direction. And a locking member 4c for positioning and fixing the engaging protrusion 4b within the engaging hole 4a. One of the engaging hole 4a and the engaging protrusion 4b is connected to the mounting means 5. The other is provided on the bottom of the seat body 1A on the angle adjusting means mounting portion 5i.

  As shown in FIG. 5, the lock member 4c is inserted forward from the rear end of the base member 5a, passes through the engagement hole 4a and the engagement protrusion 4b in the front-rear direction, and is threaded in the base member 5a. The engagement protrusion 4b is formed with a vertically long hole 4d through which the lock member 4c penetrates. This long hole 4d is formed in the center in the left-right direction of the engaging protrusion 4b in the up-down direction. On both sides in the left-right direction of this long hole 4d, serrated uneven parts 4e are formed on the engaging protrusion 4b. It is formed over the rear end face side in the vertical direction. Corresponding to the serrated irregularities 4e, serrated irregularities 4f are formed on the inner surface of the engagement hole 4a.

With the above structure, by screwing the lock member 4c having the screw handle structure into the screw hole 5j, the angle adjusting means mounting portion 5i at the rear end of the mounting means 5 is elastically deformed, and the sawtooth-shaped uneven portion 4f is sawtooth-shaped. The infant seat 1 with respect to the attachment means 5 is positioned and held via the engaging projection 4b by being brought close to and engaged with the uneven portion 4e.
Further, by loosening the lock member 4c having the screw handle structure, the angle adjusting means attaching portion 5i at the rear end of the attaching means 5 is elastically restored to release the meshing of the serrated uneven portions 4e and 4f, and the seat The engaging protrusion 4b integrated with the main body 1A is moved in the vertical direction within the range of the vertical hole 4d so that the seating surface 1a of the seat main body 1A with respect to the mounting means 5 is horizontal with respect to the ground or rearward of the front portion. The mounting angle can be adjusted so that a proper riding posture can be obtained, such that when the infant is seated, the rear part is lowered slightly by its weight and the rear part is lower or horizontal than the front part. it can. After this adjustment, the locking member 4c having the screw handle structure is screwed into the screw hole 5j, so that the saw-toothed uneven portions 4e and 4f are engaged with each other so that the seat body 1A is in the proper riding posture with respect to the mounting means 5. Positioning and holding are performed by.

  As shown in FIGS. 4 to 6, the seat main body 1 </ b> A has a bottom wall (seat) 1 a ′ whose upper surface is a seating surface 1 a on which an infant's buttocks rests and a back that stands up from the rear of the bottom wall 1 a ′. A bendable portion 1d, left and right side wall portions 1e and 1e that stand up from the left and right sides of the bottom wall portion 1a 'and continue to the backrest portion 1d, and an infant crotch protection portion 1f that rises from the front center of the bottom wall portion 1a' And an infant thigh support portion 1g, 1g formed between the infant crotch protection portion 1f and the left and right side wall portions 1e, 1e for supporting the infant's thigh, and the whole is integrally formed of a synthetic resin. A cushion pad (not shown) is attached to the seating surface 1a on the upper surface of the bottom wall 1a ′.

The mounting seat 5b and the mounting member 5c of the mounting means 5 are disposed between the left and right infant thigh support sections 1g and 1g and on the proximal end side of the infant thigh support section 1g.
Note that the mounting angle adjusting means 4 may have a horizontal handle 7 having a screw handle structure, and may be prevented from rotating (by engagement of a friction plate or an uneven tooth surface) by a tightening operation.
As shown in FIGS. 1 to 3, 5, and 6, the seat body 1 </ b> A has the seating surface 1 a disposed below the handlebar 11 and the infant crotch protection portion 1 f on the rear side of the handle stem 3. The infant thigh support portion 1g is arranged to extend to the front side of the handle stem 3 on both the left and right sides of the handle stem 3.

  As shown in FIGS. 1 to 4, a headrest 1 h is attached to the upper back portion of the backrest 1 d of the seat body 1 </ b> A so that the height can be adjusted. The headrest 1h is for protecting the head of the infant seated on the seat body 1A from the rear and the left and right sides. The mounting support 1i is vertically mounted on the support guide 1j formed on the back surface of the backrest 1d. It is attached so as to be slidable in the direction, and can be fixed and held at an appropriate position in the height direction by the lock member 1k. In FIG. 3, the mounting support column 1 i is configured to be able to stand up and down in a folded state in two at the upper end by the hinge shaft 1 n, and a lock member 1 m that holds the standing state is added. By loosening the lock member 1m and causing the upper portion of the mounting support column 1i to fall backward at the position of the hinge shaft 1n, the infant can easily get on and off the infant seat 1. The headrest 1h is formed of a synthetic resin, and a cushion pad (not shown) is attached to a surface that comes into contact with the infant's occipital and left and right side heads.

The infant seat 1 is configured so that the front heel 2 attached to the front portion of the bicycle is also used as a step member that accommodates the front ends of both feet of the infant.
The main body 2A of the front wing 2 has a bottom wall portion 2a, a front wall portion 2b, left and right side wall portions 2c, 2c, and a rear wall portion 2d, and is formed in a substantially rectangular box shape that is opened upward, and is made of synthetic resin. It is molded in one piece.
The rear end sides of the left and right side wall portions 2c, 2c of the front saddle body 2A are formed to extend rearward from the rear wall portion 2d, and are portions extending rearward from the rear wall portion 2d of the side wall 2c. The infant seat 1 is attached so that the front end side of the infant thigh support portion 1g of the seat body 1A is disposed on the inner side in the left-right direction, and the infant thigh support portion 1g is located inside the side wall portion 2c of the front heel body 2A. It is configured to prevent rotation of the infant seat 1 around the handle stem 3 also by contact.

Further, the forehead body 2A has infant both foot insertion openings 2e, 2e at least on its rear wall 2d. Inside the forehead body 2A, the openings 2e, 2e are closed and the forehead body 2A is closed. A state in which the inside is the luggage storage space 12 (see FIG. 2), and the openings 2e and 2e are opened, and the forehead body 2A is divided into a storage space 13 and a luggage storage space 14 at the tip of the infant's feet. A plate-like member 15 that can be changed to a state (see FIG. 1) is provided.
The plate-like member 15 protrudes in the front-rear direction with respect to the main member 15a pivotally supported by the hinge member 16 on the upper rear side of the side wall portion 2c of the forehead main body 2A. There is provided an auxiliary member 15b combined in a retractable manner, and a lock mechanism 17 for positioning and fixing the auxiliary member 15b with respect to the main member 15a at a protruding position and a retracted position.

The plate-like member 15 is shortened by retracting the auxiliary member 15b with respect to the main member 15a, and the openings 2e and 2e are closed to make the entire inside of the front wing main body 2A the luggage storage space 12. The auxiliary member 15b can be protruded from the main member 15a, and the forehead main body 2A can be divided into a storage space 13 and a luggage storage space 14 at the front end of both feet of the infant. it can.
As shown in FIG. 14, the main member 15a is made of a synthetic resin plate having a rectangular plate shape substantially equal to the width and depth in the left-right direction of the inner surface of the front wing body 2A, and hinge members on the left and right sides of the rear end of the main member 15a. 16 insertion holes 15c, 15c are formed, and two long holes 15d, 15d are formed on the left and right sides from the midway in the front-rear direction of the main member 15a to the front end side, and the left and right sides of these two long holes 15d, 15d A keyhole 15e is formed in the middle portion in the direction. The key hole 15e has a shape in which large-diameter circular holes 15g and 15h are formed at both ends of a narrow slit 15f extending in the front-rear direction of the main member 15a.

The auxiliary member 15b is a synthetic resin plate made of the same material as the main member 15a. As shown in FIG. 14, the left-right width is the same as the main member 15a, and the front-rear direction length is shorter than the main member 15a. The left and right side corners on the front end side are arcuate and have a planar shape along the inner surfaces of the front wall 2b and the left and right side walls 2c, 2c of the front collar body 2A. In the auxiliary member 15b, pin holes 15i and 15i are formed on both the left and right sides of the rear end, and a lock handle hole 15j is formed in an intermediate portion between the pin holes 15i and 15i on the left and right sides.
The auxiliary member 15b is superposed on the main member 15a, and the guide pins 15k and 15k are inserted through the pin holes 15i and 15i and the long holes 15d and 15d to be combined. Thereby, the auxiliary member 15b is guided by the main member 15a so as to protrude and retract in the front-rear direction through the guide pins 15k and 15k within the range of the long holes 15d and 15d.

  The lock mechanism 17 includes the key hole 15e, a rectangular parallelepiped key piece 17a combined with the key hole 15e, and a lock handle 17b integrated with the key piece 17a. The lock handle 17b is rotatably inserted into the lock handle hole 15j of the auxiliary member 15b, and the key piece 17a is fixed to the insertion end with a screw (not shown). The key piece 17a is fitted into the key hole 15e. The long side dimension of the key piece 17a is slightly smaller than the diameters of the circular holes 15g and 15h at both ends of the key hole 15e, and the short side dimension of the key piece 17a is The width of the slit 15f of the keyhole 15e is slightly smaller.

Thereby, when the key piece 17a is in one of the circular holes 15g and 15h at both ends of the key hole 15e, the lock handle 17b can be freely rotated, and the long side direction of the key piece 17a is set to the slit 15f. When aligned with the longitudinal direction, the auxiliary member 15b can be protruded and retracted with respect to the main member 15a. When the lock handle 17b is rotated 90 degrees at both ends of the slit 15f, the key piece 17a becomes a circle at both ends of the key hole 15e. The long side is orthogonal to the slit 15f in the hole 15g or 15h, and the auxiliary member 15b can be positioned and fixed with respect to the main member 15a.
As shown in FIG. 14, positioning recesses 15m are formed at intervals of 90 degrees around the lock handle hole 15j. Correspondingly, positioning is performed at intervals of 90 degrees on the seat surface side of the lock handle 17b. A protrusion (not shown) is mounted so as to be able to appear and retract through an elastic means.

Two long holes 2f and 2f which are long in the vertical direction are formed in the rear wall 2d of the forehead main body 2A, and a mounting bracket 18 (see FIG. 2) is attached to the long holes 2f and 2f. The front stem body 2A is attached and fixed to a part of the handle stem 3, for example, the lamp hanging stay 9, and an appropriate mounting bracket (shown in the figure) is attached to the saddle support member 19 erected from the front axle 6. (Omitted).
Note that the mounting holes of the mounting bracket 18 are elongated holes 2f and 2f, because the vertical direction dimension of the bicycle handle post 20 is not uniform among various bicycles, and the position of the lamp hanging stay 9 is different. It is to do. In addition, the infant foot insertion openings 2e and 2e formed on the rear wall 2d of the forehead main body 2A are also formed long in the vertical direction for the same reason.

The plate-like member 15 serves as an upper lid that covers the upper part of the front wing body 2 by holding the main member 15a and the auxiliary member 15b in a horizontal state, or holds the main member 15a and the auxiliary member 15b in a vertical state. It is also possible to use a windshield on the front side.
The infant seat for bicycles in the above embodiment maintains an appropriate riding posture of the infant with respect to various bicycles in which the standing angle of the handle stem 3 is not uniform and the forward displacement dimension of the handle bar 11 with respect to the handle stem 3 is not uniform. It can be installed with versatility. That is, regardless of the standing angle of the handle stem 3 and the forward displacement dimension of the handle bar 11, the attachment means 5 is fixed to the handle stem 3 and the angle of the seat body 1 </ b> A is adjusted with respect to the attachment means 5. The means 4 can be easily adjusted and attached to an appropriate angle. Further, the attachment means 5 can be securely attached to the handle stem 3 by the attachment seat 5b and the attachment member 5c to the handle stem 3, and the seat body 1A can be attached to the attachment means 5 with the horizontal shaft 7 and It can be attached in a state adjusted to an appropriate attachment angle by the attachment angle adjusting means 4.

Further, the seat body 1A is provided with the infant thigh support portion 1g extending forward from the left and right sides of the front portion of the bottom wall portion 1a ', that is, the seat portion 1a', in other words, at the front center side of the conventional seat portion. Forming a recess recessed backward from the front end,
In addition to this, the mounting seat portion 5b for mounting the seat body 1A to the handle stem 3 is disposed between the left and right infant thigh support portions 1g and on the proximal end side of the infant thigh support portion 1g. The seat body 1A is attached so that the handle stem 3 is positioned between the left and right infant thigh support portions 1g and on the proximal end side of the infant thigh time support portion 1g. Therefore, the seat body 1A (infant seat 1) is It can be attached close to the handle stem 3 as close to the front as possible, and can be attached at a low position, whereby the infant can be stably placed.

In addition, the space between the seat body 1A (the infant seat 1) and the driver can be increased (the distance between the rear end of the infant seat 1 and the front end of the saddle can be increased), and the driver can lift his / her foot from the front side of the saddle. The troubles when turning and getting on and off can be reduced.
In addition, since the infant seat 1 can be attached to the front of the bicycle as much as possible in this way, the bicycle handlebar 11 can be used as an infant handle, and the infant handle can be omitted. Thus, the configuration of the infant seat 1 can be simplified.
In addition, the infant seat 1 protects the waist of the infant by the backrest part 1d and the left and right side wall parts 1e, 1e, and restricts the backward movement and the movement to the both sides. The movement to the front side can be limited to protect against contact with the handle stem 3. In addition, the infant's thigh support portions 1g and 1g allow the infant to sit comfortably by putting both feet forward from both sides of the handle stem 3.

In addition, the above-described infant seat 1 can be put out and attached to the front of the bicycle as much as possible, and the above-described effects can be obtained. In addition, the front end portions of both feet of the infant seated on the seat body 1A While being able to protect by the main body 2A, the step part of the infant seat 1 can be omitted and the configuration of the entire infant seat 1 can be simplified.
Further, when the infant is not carried, the entire forehead body 2A can be used as the luggage storage space 12, and when the infant is placed, the interior of the frontal lid body 2A is accommodated with the accommodation space 13 at the tip of the infant's feet and the luggage accommodation. It can be divided into the space 14 and used.

Next, another embodiment of the present invention will be described with reference to FIGS.
The other embodiment is an improvement of the infant seat 1 and the front wing 2 according to the above-described embodiment. In the infant seat 1, the base member 5a of the attachment means 5 is eliminated and the attachment angle adjusting means 4 is removed. The infant seat 1 is simplified so that the plate-like member 15 is simplified in the front wing 2.
In the following description of the other embodiments, parts different from the above-described embodiment will be described, and description of parts configured similarly to the above-described embodiment will be omitted.

In this other embodiment, the attachment means 5 is mainly composed of an attachment seat portion 5b provided on the seat body 1A side and an attachment member 5c that is detachably attached to the attachment seat portion 5b. ing.
The mounting seat portion 5b is disposed between the left and right infant thigh support portions 1g, 1g of the seat body 1A, and is integrally formed with the seat body 1A so as to extend forward from the infant crotch protection portion 1f. The mounting seat portion 5b may be formed separately from the seat body 1A and fixed to the front side of the infant crotch protection portion 1f).

The mounting seat 5b and the mounting member 5c are detachably fastened by four fastening members including bolts 24A and nuts 24B, as in the above-described embodiment, and between the mounting seat 5b and the mounting member 5c. The seat body 1 </ b> A is attached and fixed to the handle stem 3 by sandwiching the handle stem 3 and fastening the attachment seat 5 b and the attachment member 5 c.
The attachment angle adjusting means 4 includes a pair of spacer members 25 and 26 interposed between the handle stem 3 and the attachment seat portion 5b and between the handle stem 3 and the attachment member 5c. Mounting with one of the spacer members 25, 26 interposed between the handle stem 3 and the mounting seat 5b and the other spacer member 25, 26 interposed between the handle stem 3 and the mounting member 5c The seat body 1A is attached and fixed to the handle stem 3 by fastening the seat portion 5b and the attachment member 5c.

The contact surfaces (inner contact surfaces) 25a, 25b of the pair of spacer members 25, 26 with respect to the handle stem 3 are formed in arcuate groove shapes that match (surface contact with) the outer surface of the handle stem 3.
Further, the contact surface (outer contact surface) 25b of the spacer member 25 with respect to the mounting seat portion 5b or the mounting member 5c is formed in a conical surface shape inclined with respect to the axial center W direction (outer surface) of the handle stem 3, The contact surface (outer contact surface) 26b of the other spacer member 26 with respect to the mounting seat 5b or the mounting member 5c is formed in a cylindrical surface shape parallel to the axial center W direction (outer surface) of the handle stem 3.

Further, the contact surfaces 27 and 28 of the mounting seat portion 5b and the mounting member 5c with respect to the spacer members 25 and 26 are formed in an arcuate groove shape in surface contact with the outer contact surfaces 25b and 26b of the spacer members 25 and 26.
Accordingly, the outer contact surface 25b of one spacer member 25 is inclined with respect to the direction of the axis W of the handle stem 3 with respect to the outer contact surface 26b of the other spacer member 26, and FIGS. As shown in FIG. 2, the mounting angle of the seat body 1A with respect to the handlebar stem 3 can be changed (adjusted) by exchanging one spacer member 25 and the other spacer member 26. The seat surface 1a of the seat body 1A is substantially horizontal with respect to the ground with respect to the handlebar stem 3 when the standing angle of the stem 3 is loose (or the rear part is slightly higher than the front part). The seat body 1A is attached and fixed to the handle stem 3 in an appropriate riding posture.

In addition, similar fitting grooves 30 are formed in the contact surfaces 27 and 28 of the mounting seat portion 5b and the mounting member 5c with respect to the spacer members 25 and 26, respectively, and the outer contact surfaces 25b and 26b of the pair of spacer members 25 and 26 are formed. A fitting projection 31 that fits into the fitting groove 30 is formed, and by fitting the fitting projection 31 into the fitting groove 30, the mounting seat portion of the spacer members 25, 26 is formed. The handle stem 3 is configured to be positioned in the circumferential direction and the axial direction with respect to the mounting member 5c.
As described above, between the mounting seat portion 5b side and the spacer member 25 disposed on the mounting seat portion 5b side and between the mounting member 5c and the spacer member 26 disposed on the mounting member 5c side, Each spacer member 25, 26 is provided with a position holding means 49 for holding the position with respect to the handle stem 3, and this position holding means 49 is composed of a fitting groove 30 and a fitting protrusion 31. Has been.

The illustrated example shows an example of the embodiment, and various design changes are possible. By replacing one spacer member 25 and the other spacer member 26, the seat body 1A with respect to the handle stem 3 can be changed. As long as the mounting angle can be adjusted, the shape of the spacer members 25 and 26 is not limited.
Further, as shown in FIGS. 20 to 25, when the auxiliary member 15 b is slid with respect to the main member 15 a, the auxiliary member 15 b is held on the upper surface side of the plate-like member 15 of the forehead 2 in the other embodiment. A handle 33 is provided, and a locking portion 34 is provided on the front end side (front end side) of the auxiliary member 15b.

Further, the front saddle body 2A is provided with locked portions 35A and 35B on the bottom wall portion 2a rear side and the front wall portion 2b lower side, to which the locking portions 34 are detachably locked. (The locked portion 35A provided on the rear side of the bottom wall portion 2a of the forehead main body 2A is referred to as a first locked portion 35A, and the locked portion provided on the lower side of the front wall portion 2b of the front rod main body 2A. The portion 35B is referred to as a second locked portion 35B).
The auxiliary member 15b is moved backward with respect to the main member 15a to shorten the plate-like member 15, and the plate-like member 15 is closed at the openings 2e and 2e of the front wing main body 2A so that the entire inside of the front wing main body 2A is loaded 12, the locking portion 34 is locked to the first locked portion 35A, the plate-like member 15 is held in the closed state (see FIG. 23), and the auxiliary member 15b is moved to the main member 15a. When the plate-like member 15 is made long and the plate-like member 15 is divided into the accommodation space 13 and the luggage accommodation space 14 at the front end of the infant's legs, the plate-like member 15 is locked. The portion 34 is configured to be locked to the second locked portion 35B so that the plate-like member 15 is held in the partitioned state (see FIG. 24).

In the other embodiment, the locked portions 35A and 35B are configured by horizontally elongated holes that penetrate the bottom wall portion 2a and the front wall portion 2b of the front heel body 2A.
The locking portion 34 includes an elastic portion 36 that is elastically swingable up and down in the thickness direction of the auxiliary member 15b, and a fixing portion 37 that is positioned on both the left and right sides of the elastic portion 36 and cannot be elastically deformed. It consists of and.
The elastic portion 36 is formed thicker than the midway portion 36b so that the front end side 36a (tip portion) bulges downward, and the base side 36c is formed thinner than the midway portion 36b. The thin portion 36c on the side is bent elastically and can swing up and down.

The upper surface of the elastic portion 36 is positioned lower in the thickness direction than the upper surface of the fixed portion 37, and the lower surface of the elastic portion 36 is lower in the thickness direction than the lower surface of the fixed portion 37. Is located.
Further, the lower surface of the distal end portion 36a of the elastic portion 35 is formed in an arc shape.
The distance X in the plate thickness direction of the auxiliary member 15b from the surface above the fixed portion 37 to the surface below the elastic portion 36 on the front end side of the locking portion 34 is orthogonal to the laterally long direction of the locked portions 35A and 35B. The distance Z in the thickness direction of the auxiliary member 15b from the upper surface of the fixing portion 37 to the lower surface of the elastic portion 36 in the middle portion of the engaging portion 34 is larger than the dimension Y in the direction in which the engaging portion 34A is engaged. , 35B is smaller than the dimension Y in the direction perpendicular to the laterally long direction.

  In the locking portion 34 and the locked portion 35 having the above-described configuration, when the auxiliary member 15b is slid so that the auxiliary member 15b protrudes at each position of the plate-like member 15 in the closed state and the partitioned state. The leading end portion 36a of the elastic portion 36 is guided by the edges of the locked portions 35A and 35B, so that the elastic portion 36 is elastically deformed in the direction in which the distance X is reduced, and the locking portion 34 is locked. When the locking portion 34 is inserted into the locked portions 35A and 35B and the elastic portion 36 is restored when the locking portion 34 is inserted into the locked portions 35A and 35B, the locking portion 36 is retained from the locked portions 35A and 35B. And locked.

Further, when the auxiliary member 15b is slid so that the auxiliary member 15b is retracted from the state in which the engaging portion 36 is inserted into the locked portions 35A and 35B, the engaging portion is operated by the reverse operation to the above. 36 is removed from the locked portions 35A and 35B.
Note that the structure of the locking portion 34 and the locked portions 35A and 35B is not limited to the structure described above, and the locking portion 34 is operated by retreating the auxiliary member 15b relative to the main member 15a. May be configured to be engaged and disengaged with respect to the locked portions 35A and 35B.
Further, the plate member 15 of the forehead 2 in the other embodiment is not provided with the lock mechanism 17 in the above-described embodiment.

In FIG. 26, reference numeral 39 denotes a protector, which is provided so as to cover the upper end side of the handle stem 3, and this protector 39 prevents the infant from coming into direct contact with the upper end side of the handle stem 3. The
In addition, as a material which forms this protector 39, a soft and cushioning thing is preferable.
27 to 39 show another embodiment different from the above-described embodiment. As shown in FIGS. 27 and 28, the seat main body 1A in this embodiment is provided with a handle 40 for an infant to be gripped by an infant seated on the seat portion of the seat main body 1A.

The infant handle 40 is detachably provided at the front portion of the seat main body 1A, and an upright portion 41 that rises upward from the front central portion of the seat main body 1A, and a left-right direction from the upper end portion of the upright portion 41. And an extended grip 42.
The standing portion 41 is made of synthetic resin. The standing portion 41 is detachably attached to the infant crotch protection portion 1f by four fastening members including bolts 24A and nuts 24B, and an insertion hole 43 into which the bolt 24A is inserted is provided below the standing portion 41. Is provided. The front outer peripheral portion 41a at the lower portion of the standing portion 41 has an arc shape along the rear wall of the infant crotch protection portion 1f.

  The standing portion 41 is attached to the infant crotch protection portion 1f by aligning the front outer peripheral portion 41a of the standing portion 41 and the rear wall of the infant crotch protection portion 1f, and then attaching the bolt 24A from the seat body 1A to the standing portion 41. Is inserted into the insertion hole 44 of the infant crotch protection portion 1f (attachment seat portion 5b) and the insertion hole 45 of the attachment member 5c provided corresponding to the insertion hole 43, and the attachment member 5c is attached to the bolt 24A. By fastening the nut 24 </ b> B from the side, the mounting member 5 c can be fastened together. That is, the infant handle 40 can be attached to the seat body 1A together with the attachment member 5c to the attachment seat portion 5b, and the bolts 24A and nuts 24B are fastening members for attaching the attachment member 5c to the attachment seat portion 5b. And the fastening member for attaching the infant handle 40 to the seat body 1A.

The grip part 42 is formed in a cylindrical shape from a synthetic resin, and the outer diameter of the grip part 42 is set to a size that can be gripped by an infant.
Thus, since the infant handle 40 is provided at the front of the seat body 1A, the infant can be seated in the seat body 1A in a more stable state, and in particular, the posture of the infant can be stabilized while the bicycle is running. be able to.
On the side of the mounting seat portion 5b, a temporary positioning portion 46 that determines the position with respect to the mounting seat portion 5b by being hooked on the mounting member 5c is provided. Specifically, the temporary positioning portion 46 is constituted by a pair of claw members provided so as to protrude forward at the lower portion of the standing portion 41 of the infant handle 40, and the tip portion of the claw member 46 and the attachment member 5c. It is configured to be hooked.

In a state where the infant handle 40 is attached to the seat body 1A, the claw member 46 penetrates the infant crotch protection portion 1f (attachment seat portion 5b) and sandwiches the fitting groove 30 of the attachment seat portion 5b on the left and right. It cannot move up and down and left and right in a state of protruding from the front wall (front surface) of the mounting seat 5b. The claw member 46 is made of a material such as synthetic resin, and can be elastically deformed in the hooking direction (in this embodiment, the left-right direction). A claw portion 46 a is formed at the tip of the claw member 46.
The front surface (front wall) of the attachment member 5 c is a latching portion 47 that latches on the claw portion 46 a of the claw member 46.

As shown in FIG. 28, when attaching the attachment member 5c to the attachment seat portion 5b, the claw member 46 is inserted into the insertion hole 48 provided in the attachment member 5c, and the tip of the claw member 46 is attached to the attachment member 5c. The front end portion (claw portion 46a) of the claw member 46 moves in the latching direction, and the claw portion 46a of the claw member 46 is automatically moved to the front surface (holding portion 47) of the mounting member 5c. It comes to hang.
Thus, when attaching the attachment member 5c to the attachment seat portion 5b, the attachment member 5c is moved vertically and horizontally by engaging the claw portion 46a of the claw member 46 and the engagement portion 47 of the attachment member 5c. The mounting member 5c is held at the mounting position of the mounting seat 5b (the insertion hole 45 of the mounting member 5c and the insertion hole 44 of the mounting seat 5b coincide).

As shown in FIG. 28, the safety belt 10 is provided on the seat body 1A side as in the above-described embodiment. The safety belt 10 is attached to the handle bar 11 and the handle stem 3 separately from the attaching means 5 to prevent the seat body 1A from falling off the bicycle. The length of the safety belt 10 is adjusted after the handle bar 11 and the handle stem 3 are attached. It is provided on the seat main body 1A side so as to be free.
Specifically, a pair of left and right insertion holes 50 for passing the safety belt 10 up and down are formed on the front wall side of the mounting seat portion 5b, and the safety belt 10 is passed left and right on the rear wall side of the mounting seat portion 5b. A pair of left and right insertion holes 51 are formed. Further, a pair of left and right insertion holes 52 through which the safety belt 10 passes vertically are formed at positions corresponding to the insertion holes 50 of the mounting seat portion 5b on the rear wall side of the mounting member 5c.

The insertion hole 50 on the front wall side of the mounting seat portion 5b and the insertion hole 52 of the mounting member 5c are formed into a long hole shape long before and after the safety belt 10 can be inserted in plan view in a state where both are combined. An insertion hole 51 on the rear wall side of 5b is an elongated hole that is long in the vertical direction through which the safety belt 10 can be inserted, and has the same shape as the reference numeral 5f in the above-described embodiment.
With the configuration of these insertion holes 50, 51, 52, the safety belt 10 can be passed without being twisted in the width direction. With the configuration of the insertion holes 51, 51, 52, the safety belt 10 can be slid in the length direction, and the length of the safety belt 10 can be adjusted after the handle stem 3 is attached.

As shown in FIGS. 30 to 32, a plate-like member is provided in the forehead body 2 </ b> A so as to maintain a state in which the inside of the forehead body 2 </ b> A is partitioned and formed into a storage space 13 and a luggage storage space 14 at the tips of both feet of the infant. 15 is provided with a lock mechanism 55 for locking the front end portion side of 15 to the bottom wall portion 2a of the front saddle body 2A.
Specifically, the lock mechanism 55 includes a support 56 that protrudes forward from the left and right central portions of the lower portion of the auxiliary member 15b, and is supported by the support 56 so as to be rotatable, and the bottom wall 2a of the forehead main body 2A. And a through hole 58 into which a lower end side (tip end side) of the lock member 57 is inserted. This insertion hole 58 is provided in two places on the front heel body 2A. One insertion hole 58 is provided on the front side of the bottom wall portion 2a of the front heel body 2A, and the other insertion hole 58 is provided on the front side. It is provided on the rear side of the bottom wall portion 2a of the bag main body 2A.

A knob member 59 that rotates the lock member 57 is provided at the upper end portion of the lock member 57, and a lock piece 60 that is engaged with the lower surface of the bottom wall portion 2a of the front wing main body 2A is provided at the lower end portion of the lock member 57. Is provided.
As shown in FIG. 31, the length L1 of the lock piece 60 is set to be smaller than the length L2 of the insertion hole 58 of the bottom wall 2a of the forehead main body 2A, and the lock piece 60 of the lock member 57 is released from the release direction. The lock piece 60 can be inserted into the insertion hole 58 in the state of being rotated to the right. The length L1 of the lock piece 60 is set to be larger than the width L3 of the insertion hole 58 of the bottom wall 2a of the forehead main body 2A, and in a state where the lock piece 60 of the lock member 57 is rotated in the lock direction. The lock piece 60 inserted into the insertion hole 58 can be locked to the edge (the lower surface of the bottom wall) of the insertion hole 58.

  The auxiliary member 15b is moved backward with respect to the main member 15a to shorten the plate-like member 15, and in this state, the lock piece 60 of the lock member 57 is brought close to the insertion hole 58 provided on the rear side of the bottom wall portion 2a. Then, with the lock member 57 rotated in the release direction, the lock member 60 is inserted into the insertion hole 58 provided on the rear side of the bottom wall portion 2a by projecting the auxiliary member 15b with respect to the main member 15a. By rotating the lock member 57 in the locking direction, the plate-like member 15 can be made unrotatable with respect to the forehead main body 2A. Thus, by making the plate-like member 15 non-rotatable, the inside of the front wing main body 2A can be made only into the luggage storage space 14.

On the other hand, as shown in FIG. 32, with the lock member 57 rotated in the release direction, the lock piece 60 is inserted into the insertion hole 58 provided on the front side of the bottom wall portion 2a, and the lock member 57 is moved in the lock direction. By rotating, the plate-like member 15 is made non-rotatable, so that the inside of the forehead main body 2A is divided into a storage space 13 and a luggage storage space 14 at the tips of both feet of the infant, and cannot rotate. The state of being partitioned by the member 15 is held.
When the plate member 15 is locked, the lock member 57 is rotated in the unlocking direction, the auxiliary member 15b is moved backward with respect to the main member 15a, and the plate member 15 is shortened. The plate member 15 can be unlocked by pulling upward from the insertion hole 58.

  FIGS. 33 to 35 show a forehead mounting member 65 for mounting the forehead body 2 </ b> A to the lamp hanging stay 9 fixed to the handle stem 3. This ramp hanging stay 9 is formed by bending a plate member in the middle and forming a substantially L shape in a side view, and has a vertically rising portion 9a and a horizontal portion 9b extending rearward from the lower end of the rising portion 9a. I have it. In addition, reinforcing ribs 78 are provided at the left and right central portions of the horizontal portion 9b so as to extend back and forth to reinforce the lamp hanging stay 9. The upright portion 9a is provided with an insertion hole or notch for allowing the bolt 72 to pass therethrough.

  As shown in FIGS. 33 and 34, the forehead mounting member 65 includes a first mounting portion 66 and a second mounting portion 67. The first attachment portion 66 is attached to the lamp hanging stay 9 side (rear side), and the second attachment portion 67 is connected to the first attachment portion 66 attached to the lamp hanging stay 9 from the front wing body 2A (front side). It can be attached. By attaching and fixing the second mounting portion 67 so as to sandwich the front rod main body 2A in the first mounting portion 66 mounted on the lamp hanging stay 9 side, the front rod main body 2A is fixed to the lamp hanging stay 9 (front of the bicycle). Part) can be attached.

The first attachment portion 66 is configured so that the second attachment portion 67 can be attached and fixed from within the forehead main body 2A. Specifically, the first attachment portion 66 includes a first member 70 formed in a plate shape with a synthetic resin or the like, and a second member 71 fitted into the first member 70. As will be described later, the first mounting portion 66 is attached to the lamp hanging stay 9 by sandwiching the lamp hanging stay 9 between the first member 70 and the second member 71.
As shown in FIGS. 34 and 35, insertion holes 73 through which the bolts 72 are inserted are provided in the left and right sides (both sides in the width direction) of the first member 70 so as to pass therethrough, and the bolts 72 are inserted into the insertion holes 73. The front end side of the bolt 72 protrudes forward from the first member 70. The head portion 72a of the bolt 72 is fitted to the edge portion 74 of the insertion hole 73, and the bolt 72 is not rotatable, so that the nut 75 is not rotated when tightening.

On the rear wall of the first member 70, projecting pieces 76 projecting rearward are provided at the left and right end portions, and sawtooth-shaped uneven portions 77 are formed at the left and right centers. The lower wall of the first member 70 is provided with a notch 79 for passing a reinforcing rib 78 that reinforces the lamp hanging stay 9. The front wall of the first member 70 is a contact portion 70 a with which the rear wall portion of the rising portion 9 a of the lamp hanging stay 9 contacts.
The second member 71 includes a front wall portion 80 disposed on the front wall side of the first member 70, a rear wall portion 81 disposed on the rear wall side of the first member 70, and the front wall portion 80 and the rear wall portion. 81 and an upper wall portion 82 that is disposed on the upper wall side of the first member 70 and is formed in a substantially U shape in a side view.

On both the left and right sides of the front wall portion 80 of the second member 71, notched grooves 83 through which the bolts 72 provided on the first member 70 pass are formed. In the rear wall portion 81 of the second member 71, a convex portion 84 that meshes with the concave and convex portion 77 of the first member 70 is formed inside the left and right center. The inner side of the front wall portion 80 of the second member 71 is an abutting portion 71 a with which the front wall portion of the rising portion 9 a of the lamp hanging stay 9 abuts.
As shown in FIGS. 33 and 34, the rear wall portion of the rising portion 9 a of the ramp hanging stay 9 is brought into contact with the contact portion 70 a of the first member 70, and then the second member 71 is moved from the upper side to the first member 70. The convex portion 84 of the second member 71 is engaged with the concave and convex portion 77 of the first member 70, and the front wall portion of the upright portion 9 a of the ramp hanging stay 9 is engaged with the contact portion 71 a of the second member 71. By abutting, the upright portion 9 a of the lamp hanging stay 9 can be sandwiched between the first member 70 and the second member 71. As a result, the first attachment portion 66 is attached to the lamp hanging stay 9.

The first attachment portion 66 is attached to the lamp hanging stay 9.
In a state in which the lamp hanging stay 9 is sandwiched between the first member 70 and the second member 71 (a state in which the first member 70 and the second member 71 are integrated), the bolt 72 provided on the first member 70 Movement in the longitudinal direction is restricted by the edge 74 of the insertion hole 73 of the first member 70 and the rear wall portion 81 of the second member 71, and the bolt 72 is held in a state of protruding forward from the first mounting portion 66. . In the state where the first member 70 and the second member 71 are assembled, the protruding pieces 76 of the first member 70 are located on both sides of the rear wall portion 81 of the second member 71. The contact of the second member 71 with the rear wall portion 81 restricts the movement of the second member 71 in the left-right direction (movement in the width direction) relative to the first member 70.

Unlike the first mounting portion 66, the second mounting portion 67 is configured by a single member, and is formed in a plate shape from a synthetic resin or the like. On both the left and right sides of the second attachment portion 67, insertion holes 85 into which bolts 72 provided on the first attachment portion 66 are inserted are provided.
To attach the forehead body 2A to the bicycle, the following procedure is used.
As shown in FIG. 33, first, the first mounting portion 66 is attached to the lamp hanging stay 9 by sandwiching the lamp hanging stay 9 between the first member 70 and the second member 71. Then, the bolt 72 of the first mounting portion 66 is inserted into the long hole 2f of the rear wall 2d of the front heel body 2A, and the bolt 72 is projected into the front heel body 2A. Then, by inserting the bolt 72 of the first attachment portion 66 into the insertion hole 85 of the second attachment portion 67 from within the forehead main body 2A, and fastening the nut 75 to the bolt 72, the attachment of the forehead main body 2A can be performed. it can.

As described above, the second mounting portion 67 can be attached to the first mounting portion 66 from within the forehead main body 2A. This can be done after attaching the handle stem 3 prior to the heel 2, and the front heel 2 can be easily attached.
As shown in FIG. 36, connecting means 87 for connecting the front portion of the seat main body 1A and the rear portion of the front saddle main body 2A is provided. The connecting means 87 is provided with a connecting portion 88 that can connect both the seat main body 1A and the front wing main body 2A even if the relative position changes.

Specifically, the connecting means 87 is provided on the front side of the left and right side wall portions 1e and 1e of the seat body 1A and the hole 89 provided on the rear side of the left and right side wall portions 2c and 2c of the front rod body 2A. It comprises a hole 90 and fasteners (not shown) such as bolts and nuts that fasten the forehead body 2A and the seat body 1A by being inserted into the hole 89 of the forehead body 2A and the hole 90 of the seat body 1A. Has been.
The connecting portion 88 has a plurality of holes 89 in the left and right side walls 2c, 2c of the front wing body 2A in the vertical direction and a long hole extending in the front and rear directions, and the left and right side walls of the seat body 1A. A plurality of holes 1e and 1e are formed in the front-rear direction, and the holes are formed in a long hole shape extending vertically.

When the front heel 2 is attached to a bicycle having various shapes, the front / rear position of the front heel 2 relative to the bicycle and the height of the front heel 2 vary depending on the bicycle. Similarly, when the infant seat 1 is attached to various bicycles, the front-rear position of the infant seat 1 and the height of the infant seat 1 vary depending on the bicycle. Therefore, when the front heel 2 and the infant seat 1 are attached to the bicycle, the relative positions of the two vary depending on the bicycle.
According to the connecting portion 88, the number of the holes 89 provided in the left and right side walls 2c, 2c of the front heel body 2A is increased up and down, and the holes 89 are elongated holes extending in the front-rear direction. Since the number of holes 90 provided in 1e, 1e is increased in the front-rear direction and the hole 90 is formed as a long hole extending vertically, the relative position between the infant seat 1 and the front heel 2 (the front-rear position and the vertical position) Even if the position and height are changed, both can be connected. In other words, corresponding to various bicycles having different vertical lengths and front / rear positions of the handle stem 3 and protruding lengths and vertical positions of the ramp hanging stays 9, while adjusting the mutual positions of the front and infant seats 1, Can be attached to a bicycle.

Thus, since the infant seat 1 and the front heel 2 can be connected by the connecting means 87, the hand of the infant is sandwiched between the left and right side walls 1e of the infant seat 1 and the left and right side walls 2c of the front heel 2. Can be prevented.
In FIG. 37, the attachment means 5 is integrally provided on the front side of the infant seat 1 (infant seat body 1A). 37, the seat portion of the seat body 1A is positioned on the rear side of the handlebar stem 3 of the bicycle, and the infant thigh support portion 1g extends on the left and right sides of the handlebar stem 3 in front of the handlebar stem 3. The seat body 1A is attached to the bicycle so as to be arranged as described above.

The attachment means 5 has a pair of left and right hooks 93 that are provided on the front side of the infant seat 1 and can be hooked on the handle bar 11. The latching portion 93 is formed integrally with the infant crotch protection portion 1f on the top of the infant crotch protection portion 1f rising from the front center of the infant seat body 1A, and the latching portion 93 protrudes forward. And a hanging part 95 extending downward from the tip of the projecting part 94.
The infant seat 1 can be attached in a suspended manner by hooking the protruding portion 94 and the hanging portion 95 on the outer peripheral portion of the handle bar 11 and suspending the front portion of the seat body 1A on the handle bar 11.

A height adjusting member 96 that adjusts the height of the infant seat main body 1 </ b> A with respect to the handle bar 11 is attached to the hanging portion 95. Specifically, the height adjusting member 96 has a rectangular shape and is formed with a through hole 97 penetrating vertically, and the hanging portion 95 can be passed through the through hole 97.
As shown in FIG. 37, before the hooking portion 93 is hooked on the handlebar 11, the hanging portion 95 is passed through the through hole 97 of the height adjusting member 96, and the height adjusting member 96 is positioned above the hanging portion 95. . Then, the latching portion 93 is hooked on the handlebar 11 and the lower surface of the height adjusting member 96 is brought into contact with the outer peripheral portion of the handlebar 11. By doing in this way, since the infant seat main body 1A is positioned above the handlebar 11 by the thickness (vertical thickness) of the height adjusting member 96, the height of the infant seat main body 1A can be changed. .

Further, a holding tool 99 such as a bolt is fastened to a screwing hole 98 provided in the lower part of the hanging part 95 and the holding tool 99 is positioned below the handle bar 11, so that the latching part 93 is moved to the handle bar 11. Can be prevented from leaving.
The attachment means 5 preferably has a locking portion 105 that locks to the handle stem 3. The locking portion 105 is integrally provided on the lower side of the infant crotch protection portion 1f, and is configured by a substantially U-shaped projection that projects forward from the lower side of the infant crotch protection portion 1f. . The outer periphery of the handle stem 3 is engaged with the edge portion 105a of the engagement portion (protruding portion) 105, and the engagement portion 105 and the outer periphery of the handle stem 3 are engaged with each other. The left-right movement of the main body 1A is restricted.

  FIG. 38 shows a modification of the attachment means 5 that can be hooked on the handle bar 11. The attachment means 5 is configured separately from the infant crotch protection portion 1f, and has a plate-like attachment portion 100 that is detachably attached to the front wall (front surface) of the infant crotch protection portion 1f by a fastening member such as a bolt. , And a latching portion 93 provided on the upper portion of the mounting portion 100. The protruding portion 94 and the hanging portion 95 are provided at the upper end portion of the mounting portion 100, and a locking portion (projecting portion) 105 is provided at the lower end portion of the mounting portion 100. The attachment part 100 is attached to the infant crotch protection part 1f so that the vertical position can be changed (the height can be adjusted) via the infant crotch protection part 1f and a plurality of screw holes 106, 107 provided vertically on the attachment part 100. It is supposed to be. The other structure is the same as that of the latch part 93 of FIG. As shown in FIG. 39, the attachment part 100 may be divided into a pair of left and right parts, and a protruding part 94 and a hanging part 95 may be formed on each attachment part 100.

  Although the embodiments of the present invention have been described above, the present invention is not limited only to the embodiments described above, and can be implemented with appropriate modifications within the scope described in the claims. . Further, the shapes and materials of the infant seat 11 and the front heel 2 may be other than those exemplified. In the above-described embodiment, the front heel attached to the front part of the bicycle is used as a step member that accommodates the front end of both feet of the infant. Instead, the step member that accommodates the front side of both the front heel and the infant And may be separated. For example, you may make it provide a step member in the outer side of the right-and-left both sides of a forehead.

It is a side view of the bicycle front part showing the embodiment of the present invention. It is a side view of the state which removed the plate-shaped member in the front heel main body in FIG. It is a side view which shows the deformation | transformation embodiment of FIG. It is a disassembled perspective view of an infant seat. It is a partial vertical side view of the state which attached the infant seat to the handle stem. FIG. 6 is a side view showing a state where the steering wheel is attached to a handle stem whose inclination angle is gentler than that of FIG. 5. It is a perspective view for description of a rotation prevention sleeve. It is a perspective view which shows the example of attachment of an attachment means. It is a perspective view which shows the other example of attachment of an attachment means. It is a perspective view which shows another example of attachment of an attaching means. It is a perspective view which shows the attachment state to the handle bar in FIG. It is the perspective view seen from the front upper part of the front heel. FIG. 13 is a similar perspective view of the forehead with the plate-like member in FIG. 12 removed. It is a disassembled perspective view of the plate-shaped member installed in a forehead. It is the perspective view seen from the rear side part of the front heel. It is a side view of the bicycle front part which shows other embodiment of this invention. (A) is the perspective view of the assembly drawing of an infant seat and a forehead, (b) is the figure which looked at the opening part of the forehead main body from the front side. It is a disassembled perspective view of an infant seat. It is a side cross-sectional schematic block diagram which shows the attachment state of an infant seat. It is the perspective view seen from the front upper part of the front heel. It is the disassembled perspective view of a plate-shaped member, Comprising: (a) is the perspective view seen from the upper side, (b) is the perspective view seen from the lower side. 21A is a cross-sectional view taken along line AA in FIG. 21A, FIG. 21B is a side cross-sectional view showing a state before the locking portion is locked to the locked portion, and FIG. It is side surface sectional drawing which showed the state which latched the latching | locking part with respect to the to-be-latched part. It is side surface sectional drawing which showed the state which closed the opening part of the front heel main body of a plate-shaped member, and made the whole inside of a front heel main body a luggage | load storage space. It is side surface sectional drawing which shows the state which canceled the latching state with respect to the to-be-latched part of a latching part. It is side surface sectional drawing which showed the state which open | releases the opening part of a forefoot main body of a plate-shaped member, and divides and forms the inside of a front heel main body in the accommodation space of the infant's both feet tip part, and luggage storage space. It is a perspective view of the assembly figure of the infant seat and front wing which shows the state which provided the protector. It is a disassembled perspective view of the infant seat in other embodiment. It is a partial plane sectional view in the front side of an infant seat. It is side surface sectional drawing of an infant seat. It is a perspective view of the state which locked the plate-shaped member and made only the luggage storage space inside the front wing body. It is a top view of the state which locked the plate-shaped member and made only the luggage storage space inside the front wing body. It is a perspective view of the state which locked the plate-shaped member and divided the inside of a forehead main body into the accommodation space and luggage storage space of the infant's both feet tip part. It is a top view which attaches a front heel with the attachment member for front heels. It is a disassembled perspective view of the attachment member for front hooks. It is a cross-sectional view of the mounting member for the front heel. It is explanatory drawing of a connection means. It is the perspective view which provided the attachment means in the infant seat. It is a perspective view which shows the 1st modification of an attaching means. It is a perspective view which shows the 2nd modification of an attaching means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Infant seat 1A Seat main body 2 Front heel 2A Front heel main body 3 Handle stem 4 Mounting angle adjustment means 5 Mounting means 6 Front axle 7 Horizontal axis 9 Lamp hanging stay 11 Handlebar 12 Luggage accommodation space 13 in front heel 13 Part accommodating space 14 Luggage accommodating space 15 Plate member 15a Main member 15b Auxiliary member 17 Lock mechanism 25 Spacer member 26 Spacer member 25b Contact surface 26b Contact surface

Claims (17)

  A seat body for carrying an infant; and attachment means for attaching the seat body to a bicycle, the seat body comprising an infant thigh support portion extending forward from the left and right sides of the front portion of the seat, and the attachment means The seat body is arranged such that the seat portion of the seat body is located on the rear side of the handlebar stem of the bicycle and the infant thigh support portion is arranged to extend forward of the handlebar stem on the left and right sides of the handle stem. An infant seat for bicycles, characterized by being attached to the bicycle.   A seat body for carrying an infant, and attachment means for attaching the seat body to a handlebar stem of the bicycle, the seat body comprising an infant thigh support portion extending forward from the left and right sides of the front portion of the seat portion; The mounting means includes a mounting seat provided on the seat body side, and a mounting seat that is detachably mounted and fixed to the mounting seat portion, and the seat body is mounted and fixed to the handle stem by sandwiching the handle stem with the mounting seat portion. A seat portion of the seat body is located on the rear side of the handle stem, and the infant thigh support portion is disposed on both the left and right sides of the handle stem so as to extend forward of the handle stem. An infant seat for bicycles, wherein an attachment seat portion of the attachment means is disposed between the left and right infant thigh support portions and on the proximal end side of the infant thigh support portion.   The infant seat for bicycles according to claim 2, further comprising attachment angle adjusting means capable of adjusting an attachment angle with respect to the handle stem so that a seating surface of the seat main body has an appropriate angle when the passenger rides.   The infant seat for bicycles according to claim 3, wherein the angle adjusting means is provided between the handle stem and the attaching means or between the seat body and the attaching means.   The mounting angle adjusting means includes a spacer member interposed between the handle stem and the mounting seat portion and between the handle stem and the mounting member, and includes one spacer member and the other spacer member. The infant seat for bicycles according to claim 3 or 4, wherein the mounting angle of the seat body with respect to the handle stem can be adjusted by replacing the seat.   The contact surface of one spacer member with respect to the mounting seat or the mounting member is inclined with respect to the axial direction of the handle stem with respect to the mounting surface of the other spacer member with respect to the mounting seat or the mounting member. The infant seat for bicycles according to claim 5.   The mounting means includes a base member to which the mounting seat portion is fixed. The base member includes a pivot portion that supports the bottom of the seat body so as to be swingable about a horizontal axis parallel to the front axle of the bicycle. 5. The infant seat for bicycles according to claim 3 or 4, wherein the angle adjusting means is configured to be able to adjust a mounting angle with respect to the handle stem by swinging the seat body about the horizontal axis. .   The attachment angle adjusting means includes an engagement hole, an engagement protrusion that engages with the engagement hole so as to be movable in the angle adjustment direction, and the engagement protrusion within the engagement hole. 8. The bicycle according to claim 7, further comprising a locking member for positioning and fixing, wherein one of the engagement hole and the engagement protrusion is provided on the attachment means and the other is provided on a seat body. Infant seat.   The said infant seat is comprised so that it may serve as the step member which accommodates the front-end | tip side of both feet of an infant with the front heel attached to the front part of a bicycle. Infant seat for bicycles.   The forehead body has an opening for inserting both feet of an infant on at least the rear wall thereof, and the inside of the forehead body closes the opening to make the entire inside of the forehead body a luggage storage space; 10. A plate-like member that can be changed to a state in which the opening is opened and the inside of the forehead main body is partitioned into a storage space for a front end portion of both feet of an infant and a luggage storage space is provided. Infant seat for bicycle as described in.   The infant seat for bicycles according to any one of claims 1 to 9, wherein the seat body is provided with a handle for an infant to be gripped by an infant seated on a seat portion of the seat body.   The bicycle according to any one of claims 2 to 10, wherein a temporary positioning portion for determining a position with respect to the mounting seat portion by being hooked on the mounting member is provided on the mounting seat portion side. For infant seats.   Between the mounting seat side and the spacer member arranged on the mounting seat side, and between the mounting member and the spacer member arranged on the mounting member side, the respective spacer members are located with respect to the handle stem. 7. The infant seat for bicycles according to claim 5 or 6, further comprising position holding means for holding the position.   A safety belt that prevents the seat body from falling off the bicycle by being attached to the handlebar and / or the handle stem provided on the upper side of the handle stem is provided on the seat body side separately from the attachment means. The bicycle according to any one of claims 2 to 11, wherein the safety belt is provided on the seat body side so as to be adjustable in length after the handle bar and / or handle stem is attached. Infant seat.   In the front heel body, the front end side of the plate-like member is placed on the bottom wall of the front heel body so as to maintain a state in which the inside of the front heel body is partitioned into a storage space for a front end of both feet and a luggage storage space. The infant seat for bicycles according to claim 10, further comprising a lock mechanism that is locked to the portion.   A front hook mounting member for mounting the front hook main body to a lamp hanging stay fixed to the handle stem, the front hook mounting member including a first mounting portion mounted on the lamp hanging stay side; And a second mounting portion for mounting and fixing the front rod on the lamp hanging stay side by being attached to the first mounting portion with the rod sandwiched therebetween, and the first mounting portion is connected to the second mounting portion from the front rod. The infant seat for bicycles according to claim 10, wherein the infant seat is configured to be attached and fixed.   Connecting means for connecting the front part of the seat main body and the rear part of the front saddle main body is provided, and this connecting means attaches both even if the relative position of the seat main body and the front saddle main body changes. The infant seat for bicycles according to any one of claims 14 to 16, further comprising a connecting portion capable of being connected.

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