JP7474960B2 - Bicycle child seats and bicycles - Google Patents

Description

The present invention belongs to the technical field related to bicycle child seats and bicycles.

Bicycle child seats that can be attached to the carrier of a bicycle or the like have been known for some time (see, for example, Patent Document 1).

Such child bicycle seats are equipped with a seat body that includes a seat portion and a back portion (backrest portion). This seat body is usually made of hard resin, so a cushion member made of foamed resin is attached to the surfaces of the seat portion and back portion of the seat body that face the seated person (child). Patent Document 1 discloses that a cushion member made of EVA resin or the like is attached to the seat body.

JP 2018-47852 A

However, cushioning materials made of foamed resin have the problem that they shrink and the ends of the cushioning material curl toward the opposite side of the seat body when exposed to direct sunlight for a long period of time.

The present invention was made in consideration of these points, and its purpose is to provide a child bicycle seat and bicycle that can suppress, with a simple structure, the shrinkage and warping of the cushion member attached to the seat body and made of a material containing foamed resin.

In order to achieve the above object, the present invention is directed to a bicycle child seat that is attached to a bicycle and is configured to include a seat body including a seat portion and a back portion erected on the rear side of the seat portion, a cushion member attached to the surface of the seat body facing the occupant and made of a material including foamed resin, and a support member that supports the cushion member is attached to the surface of the cushion member facing the seat body.

With the above configuration, the support member is attached to the surface of the cushion member facing the seat body, and this support member helps prevent the cushion member from shrinking or warping.

In the child bicycle seat, it is preferable that the cushion member is attached to the seat body via the support member.

This allows the support member to be easily attached to the seat body by means of locking claws or the like provided on the support member. However, cushion members made of materials containing foamed resin tend to have low adhesiveness, so there is a problem that even if the cushion member is attached to the seat body, it is easily peeled off. In contrast, by attaching the cushion member to the seat body via the support member, it is easy to make the support member less likely to come off the seat body by means of the locking claws or the like. In addition, it is also easy to make the cushion member less likely to come off the support member by the shapes of the cushion member and the support member, etc.

In the child bicycle seat, it is preferable that the cushion member has a folded portion with a generally U-shaped cross section that is folded back toward the seat body at multiple locations spaced apart from each other around the entire circumference or in the circumferential direction of the outer peripheral end portion, and the support member is attached to the cushion member by inserting the end of the support member into the folded portion.

This allows the support member to be easily attached to the cushion member, and effectively prevents the cushion member from shrinking or warping. In addition, by appropriately setting the insertion amount of the end of the cushion support member into the folded portion, it is possible to prevent the end from slipping out of the folded portion even if there is variation in the dimensions of the cushion member when it is molded.

In the child bicycle seat, it is preferable that a portion of the surface of the cushion member attached to the seat body that faces the seat body is in contact with the seat body.

This makes it possible to suppress movement of the cushion member relative to the seat body. In particular, when the cushion member is attached to the seat body via a support member, if the cushion member is floating above the seat body, the cushion member is more likely to vibrate when the bicycle is in motion. In contrast, by having the surface of the cushion member facing the seat body in contact with the seat body, it is possible to suppress vibration of the cushion member and suppress the generation of abnormal noise caused by this vibration.

Another aspect of the present invention is a bicycle equipped with the bicycle child seat.

This simple structure can suppress the shrinkage and warping of the cushioning material of the child bicycle seat.

As described above, with the child bicycle seat and bicycle of the present invention, the support member is attached to the surface of the cushion member facing the seat body, making it possible to suppress shrinkage and warping of the cushion member attached to the seat body with a simple structure.

1 is a side view showing a bicycle equipped with a child bicycle seat according to an exemplary embodiment. FIG. 2 is a perspective view of the bicycle child seat from the front and left side. FIG. 2 is an exploded perspective view of a child bicycle seat. 13 is a bottom view of the seat cushion member to which the seat cushion support member is attached. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. 4 is a cross-sectional view of the left-right center of a front portion of a seat portion to which a seat cushion member is attached. FIG. 4 is a perspective view showing a back cushion member and a back cushion support member, as viewed obliquely from the rear side. FIG. 13 is a rear view of the back cushion member to which the back cushion support member is attached. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8. 4 is a cross-sectional view of the head portion at the center in the left-right direction. FIG. This is a side view showing the state in which the grip bar has been rotated around its right end so that the left end portion of the grip bar that has detached from the left side wall portion is positioned below the right end portion. A cross-sectional view showing a state in which the fitting member constituting the right end portion of the grip bar is externally fitted onto the tubular member. 13 is a view corresponding to FIG. 12 and illustrating a state in which rod-shaped members are inserted into the respective insertion holes to press the pin members.

An exemplary embodiment is described in detail below with reference to the drawings.

1 shows a bicycle 100 equipped with a child bicycle seat (hereinafter simply referred to as a child seat) 10 according to an exemplary embodiment. In the following description, the forward and backward sides of the bicycle 100 are simply referred to as the front and rear, respectively. Also, the left and right sides when the bicycle 100 is viewed from the rear are simply referred to as the left and right. For the child seat 10, the side facing the child (seater) seated in the child seat 10 is the front, and the opposite side is the rear. Also, the left and right sides of the seated child are the left and right sides of the child seat 10, respectively. In this embodiment, the child seat 10 is attached to the bicycle 100 so that the front, rear, left, right, upper and lower sides of the child seat 10 are the front, rear, left, right, upper and lower sides of the bicycle 100, respectively. Therefore, in the following description, for example, when simply referring to the front, it also means the front of the bicycle 100 and the front of the child seat 10.

In this embodiment, the bicycle 100 is an electric-assisted bicycle. The bicycle 100 includes a body 102, a front wheel 103, a rear wheel 104, a drive mechanism 105, and an electrical component 106. A seat tube 121 extends upward from the center of the front-rear direction of the body 102. A saddle 123 is attached to the seat tube 121 via a seat post 122. The electrical component 106 is attached to the rear side of the seat tube 121. From the upper end of the seat tube 121, a seat stay 124 extends at an incline downward toward the rear side and is connected to the axle of the rear wheel 104. A luggage rack 125 is provided behind the saddle 123 and above the rear wheel 104, and the front end of the luggage rack 125 is fixed to the seat stay 124, and the rear end of the luggage rack 125 is fixed to a luggage rack support stay 127 that extends from the axle of the rear wheel 104 at an incline upward toward the rear. A handlebar 107 is attached to the front end of the body 102 via a handlebar post 126. Although not shown in the figure, grips that are held by the rider of the bicycle 100 are provided on both the left and right ends of the handlebar 107.

In this embodiment, the child seat 10 is mounted on the carrier 125 behind the saddle 123.

2 and 3, the child seat 10 has a seat body 11 made of hard resin. The seat body 11 has a seat portion 12 on which a child sits, a back portion 13 that stands upright behind the seat portion 12 and supports the back (in this embodiment, the back and head) of the child seated on the seat portion 12, a pair of left and right foot rest portions 17 on which the child seated on the seat portion 12 places both of his or her feet, and left and right side wall portions 19 provided at both left and right ends of the seat portion 12 and the back portion 13.

The child seat 10 is attached to the cargo bed 125 by fastening the seat 12 to the cargo bed 125 with screws while the underside of the seat 12 is in contact with the upper surface of the cargo bed 125.

A protrusion 21 that protrudes forward is provided in the center of the front end of the seat 12 in the left-right direction. The upper side of this protrusion 21 is covered by a front cover 22.

The pair of left and right foot rests 17 are connected to the left and right side ends of the protrusion 21 and the left and right side ends of the front end of the seat 12 by connecting parts 18 that extend upward from the inner left and right ends and rear end of the foot rests 17.

As shown in FIG. 3, a seat cushion member 31 is attached to the upper surface (the surface facing the seat occupant) of the seat portion 12. This seat cushion member 31 is made (molded) of a material that contains foamed resin. This material only needs to contain foamed resin, and may contain materials other than foamed resin. In this embodiment, the seat cushion member 31 is made of ethylene vinyl acetate (hereinafter, abbreviated as EVA). The seat cushion member 31 is attached to the seat portion 12 (seat body 11) via a seat cushion support member 32 made of resin (in this embodiment, polypropylene). The configuration of this seat cushion support member 32 will be described later.

The back portion 13 has a backrest portion 14 that supports the back of a child seated on the seat portion 12, and a head portion 15 that is located above the backrest portion 14 and at the same height as the child's head. A back cushion member 35 is attached to the front surface (the surface facing the seated person) of the backrest portion 14. This back cushion member 35 is also made (molded) from the same material as the seat cushion member 31. In this embodiment, the back cushion member 35 is also made from EVA. The back cushion member 35 is attached to the backrest portion 14 (seat body 11) via a back cushion support member 36 made of resin (in this embodiment, polypropylene). The configuration of this back cushion support member 36 will also be described later.

A head guard 41 is provided in front of the head portion 15, which is configured to be vertically movable relative to the back portion 13 (seat body 11). A head guard support portion 41a is provided in the left-right center of the rear surface of the head guard, extending downward from the lower end of the head guard 41. The head guard support portion 41a is inserted through a through hole 13a provided in the boundary portion (step portion) between the backrest portion 14 and the head portion 15 in the back portion 13, and is positioned on the rear side of the backrest portion 14. A slide support portion (not shown) is provided on the rear side of the backrest portion 14 to support the head guard support portion 41a so that it can slide vertically. This makes it possible to adjust the height position of the head guard 41 to match the height position of the head of a child seated on the seat portion 12.

The head guard 41 is U-shaped and open at the front. A head cushion member 42 is attached to the inside surface of the U-shape of the head guard 41 (the surface facing the seated person) so as to fit along the inside surface of the U-shape. The head cushion member 42 is also made of the same material as the seat cushion member 31. In this embodiment, the head cushion member 42 is also made of EVA. In this embodiment, unlike the seat cushion member 31 and the back cushion member 35, the head cushion member 42 is attached directly to the head guard 41 without using a support member.

In addition, a sunshade support member 45 that supports a bellows-type sunshade member 44 is attached to the head guard 41 so as to be rotatable about an axis extending in the left-right direction (only shown in Figure 1).

The seat cushion support member 32 and the back cushion support member 36 are intended to prevent the seat cushion member 31 and the back cushion member 35 from shrinking due to direct sunlight and to prevent the ends of these cushion members 31, 35 from curling toward the opposite side of the seat body 11.

As shown in FIG. 2, the child seat 10 is provided with a seat belt device 50 that restrains a child seated on the seat portion 12. In this embodiment, the seat belt device 50 is a five-point seat belt device. The seat belt device 50 has a pair of left and right shoulder belts 51 that restrain both shoulders of the child seated on the seat portion 12, a pair of left and right waist belts 52 that restrain the child's waist, a crotch belt 53 that passes between the child's legs, and a buckle 55.

The crotch belt 53 extends upward from its lower end fixed to the protruding portion 21 through the rear side of the front cover 22, and a buckle 55 is attached and fixed to the upper end of the crotch belt 53.

The pair of left and right shoulder belts 51 are exposed to the front from a pair of left and right shoulder belt holes 41b provided in the head guard 41. Most of the portions of the left and right shoulder belts 51 exposed to the front are covered by shoulder belt covers (not shown).

The left shoulder belt 51 extends downward from the left shoulder belt hole 41b, passes through the belt insertion hole of the first tongue 56, and becomes the left hip belt 52 after passing through this belt insertion hole. The right shoulder belt 51 extends downward from the right shoulder belt hole 41b, passes through the belt insertion hole of the second tongue 57, and becomes the right hip belt 52 after passing through this belt insertion hole. The left hip belt 52 extends left and downward from the first tongue 56, passes through the left side of the seat cushion member 31, and is fixed to the seat portion 12 by a fastener (not shown). The right hip belt 52 extends right and downward from the second tongue 57, passes through the right side of the seat cushion member 31, and is fixed to the seat portion 12 by a fastener (not shown).

The first tongue 56 and the second tongue 57 are connected and fixed to a buckle 55 fixed to the upper end of the crotch belt 53. In other words, the crotch belt 53 is configured to be connectable to the left and right shoulder belts 51 (and the left and right waist belts 52) via the buckle 55.

The seat belt device 50 also has chest clips 59 midway along the left and right shoulder belts 51. The chest clips 59 have a male-female structure, with the left side being a male part and the right side being a female part, for example. The chest clips 59 restrain the chest of a child seated on the seat 12.

4 and 5, the seat cushion support member 32 is attached to the seat cushion member 31. Specifically, the entire circumference of the outer peripheral end of the seat cushion member 31 is provided with a folded portion 31a having a generally U-shaped cross section that is folded back toward the seat portion 12 (seat body 11). The entire circumference of the outer peripheral end of the seat cushion support member 32 is provided with an insertion portion 32a that is inserted into the folded portion 31a. The seat cushion support member 32 is attached to the seat cushion member 31 by inserting the insertion portion 32a into the folded portion 31a. Since the seat cushion member 31 is soft, the folded portion 31a can be rolled up, and since the seat cushion support member 32 can be deformed to a certain extent, the insertion portion 32a can be inserted into the folded portion 31a. The insertion amount of the insertion portion 32a of the seat cushion support member 32 into the folded portion 31a is set to an amount that is easy to insert and will not come out of the folded portion 31a even if there is variation in the dimensions of the seat cushion member 31 when it is molded.

In this embodiment, the seat cushion support member 32 is formed in a lattice shape to reduce weight. However, this is not necessary, and appropriate cutouts may be provided. Furthermore, the seat cushion support member 32 may have any shape and may be made of any material as long as it is possible to suppress shrinkage and warping of the seat cushion member 31.

A front engagement portion 32b is provided at the center in the left-right direction at the front end of the underside of the seat cushion support member 32, which extends slightly downward and then forward. In addition, two rear engagement portions 32c extending downward are provided on both the left and right sides of the rear portion of the underside of the seat cushion support member 32.

Meanwhile, a recess 12a (see FIG. 3) into which the entire front engagement portion 32b fits is formed in the left-right center of the front portion of the seat 12, and a front engagement hole 12b (see FIG. 6) into which the tip of the front engagement portion 32b is inserted is formed in the front wall of the recess 12a. In addition, at positions corresponding to the two rear engagement portions 32c in the rear portion of the seat 12, rear engagement holes 12c into which the rear engagement portions 32c are inserted are formed so as to penetrate the seat 12 in the vertical direction.

To attach the seat cushion support member 32 attached to the seat cushion member 31 to the seat portion 12, first, tilt the seat cushion support member 32 so that the front side is lower than the rear side, and fit the front engagement portion 32b into the recess 12a. In this state, slide the front engagement portion 32b forward to insert the tip of the front engagement portion 32b into the front engagement hole 12b and abut and engage with the upper wall portion of the front engagement hole 12b (see Figure 6). Next, insert the rear engagement portion 32c into the rear engagement hole 12c, and engage the tip of the rear engagement portion 32c with the edge of the rear engagement hole 12c on the underside of the seat portion 12.

A part (in this embodiment, substantially the entire lower surface of the folded-back portion 31a) of the seat cushion member 31 attached to the seat portion 12 (seat body 11) is in contact with the upper surface of the seat portion 12. This makes it possible to suppress vibration of the seat cushion member 31 when the bicycle 100 is in motion, and to suppress the generation of abnormal noise caused by this vibration. Note that the part of the lower surface of the seat cushion member 31 that contacts the upper surface of the seat portion 12 may be a part other than the folded-back portion 31a. In this case, the seat cushion member 31 has, for example, a protruding portion on the lower surface of the seat cushion member 31 that penetrates a lattice hole or the like of the seat cushion support member 32 and contacts the upper surface of the seat portion 12.

As shown in Figures 7 to 9, the back cushion support member 36 is attached to the back cushion member 35. Specifically, the left and right ends of the back cushion member 35 (two locations spaced apart from each other in the circumferential direction) are provided with folded-back portions 35a having a generally U-shaped cross section that are folded back toward the backrest portion 14 (the seat body 11). The left and right ends of the back cushion support member 36 are formed with insertion portions 36a that are inserted into the folded-back portions 35a. The left and right insertion portions 36a are inserted into the left and right folded-back portions 35a, respectively, so that the back cushion support member 36 is attached to the back cushion member 35. As with the insertion amount of the insertion portion 32a of the seat cushion support member 32 into the folded-back portion 31a, the insertion amount of the insertion portion 36a of the back cushion support member 36 into the folded-back portion 35a is set to an amount that is easy to insert and does not allow the insertion portion 36a to come out of the folded-back portion 35a even if there is variation in the dimensions of the back cushion member 35 when it is molded.

In this embodiment, the back cushion support member 36 is also formed in a lattice shape to reduce weight. However, this is not necessary, and appropriate hollowing may be provided. In addition, the back cushion support member 36 may have any shape and may be made of any material as long as it can suppress shrinkage and warping of the back cushion member 35. Furthermore, in this embodiment, a rectangular hole 36b is formed in the center of the back cushion support member 36, and a bulge portion 35b formed in the center of the rear surface of the back cushion member 35 is inserted into this hole 36b. This is to ensure the cushioning properties of the back cushion member 35, especially in the center, while making the back cushion member 35 as thin as possible. However, if there is no problem with the cushioning properties, there is no need to form the bulge portion 35b on the rear surface of the back cushion member 35, and there is no need to form a hole 36b in the back cushion support member 36.

Two lower engagement parts 36c that extend diagonally downward and rearward are provided on both the left and right sides of the lower part of the rear surface of the back cushion support member 36. In addition, two upper engagement parts 36d that extend rearward are provided on both the left and right sides of the upper part of the rear surface of the back cushion support member 36.

On the other hand, a lower engagement hole 14a extending in the left-right direction is formed in the lower part of the backrest 14. This lower engagement hole 14a is formed by shifting the upper part of the backrest 14 above the lower engagement hole 14a rearward relative to the lower part. Two lower engagement parts 36c can be inserted from above into both the left and right parts of this lower engagement hole 14a. At this time, the lower engagement part 36c is pushed by the lower end of the part above the lower engagement hole 14a in the backrest 14 and bends downward, so that the lower engagement part 36c engages with the lower end. In addition, at a position corresponding to the two upper engagement parts 36d in the upper part of the backrest 14, an upper engagement hole 14b into which the upper engagement part 36d is inserted is formed so as to penetrate the backrest 14 in the front-rear direction.

To attach the back cushion support member 36 attached to the back cushion member 35 to the backrest portion 14, first, insert the lower engagement portion 36c from above into the lower engagement hole 14a to engage with the lower end of the portion of the backrest portion 14 that is above the lower engagement hole 14a. Next, insert the upper engagement portion 36d into the upper engagement hole 14b, and engage the tip of the upper engagement portion 36d with the edge of the upper engagement hole 14b on the rear surface of the backrest portion 14.

Similar to the seat cushion member 31, a portion of the rear surface (the surface facing the seat body 11) of the back cushion member 35 attached to the backrest portion 14 (seat body 11) (in this embodiment, substantially the entire rear surface of the folded portion 35a) is in contact with the front surface of the backrest portion 14. This makes it possible to suppress vibration of the back cushion member 35 while the bicycle 100 is in motion, and to suppress the generation of abnormal noise caused by this vibration. Note that instead of or in addition to the rear surface of the folded portion 35a contacting the front surface of the backrest portion 14, the bulging portion 35b of the back cushion member 35 may be in contact with the front surface of the backrest portion 14.

As shown in FIG. 10, a tail light unit 61 including an LED is attached near the upper end of the rear surface of the back portion 13 (in this embodiment, the head portion 15). The rear surface of this tail light unit 61 is designed to glow red.

A mounting clip 62 is provided on the front surface of the tail light unit 61 for mounting the tail light unit 61 to the rear surface of the head unit 15. This mounting clip 62 has a front side portion 62a and a rear side portion 62b that sandwich the head unit 15 from the front and rear, and the tail light unit 61 is fixed to the rear surface of the rear side portion 62b.

The front portion 62a and the rear portion 62b are connected to each other by a connecting portion 62c that has an inverted U-shape that opens downward. The connecting portion 62c is inserted into a through hole 15a provided in the head portion 15, and the front portion 62a is located on the front side of the head portion 15, while the rear portion 62b is located on the rear side of the head portion 15 together with the tail light unit 61. The front portion 62a is inserted into the through hole 15a from the rear side thereof and is located on the front side of the head portion 15.

The lower end and vertical middle part of the front part 62a are provided with engagement protrusions 62d that engage with engagement recesses 15b provided on the front surface of the head part 15. In addition, engagement protrusions 62e that engage with engagement recesses 15c provided on the rear surface of the head part 15 are provided at two locations in the vertical middle part of the rear part 62b. When the front part 62a is inserted into the through hole 15a and positioned in front of the head part 15, the distance between the front part 62a and the rear part 62b becomes larger than before the insertion, and a force acts on the front part 62a and the rear part 62b to bring them closer to each other. This force ensures that the engagement protrusions 62d, 62e engage with the engagement recesses 15b, 15c, and the mounting clip 62 (i.e., the tail light unit 61) is firmly fixed to the head part 15.

As shown in FIG. 2, the child seat 10 is provided with a grip bar 71 that is gripped by a child seated on the seat portion 12. The grip bar 71 extends in the left-right direction. Both left-right ends of the grip bar 71 are connected to the front ends of the left-right side wall portions 19, respectively.

Both ends of the grip bar 71 are configured to be freely attached and detached to the left and right side wall portions 19. One end of the grip bar 71 (the left end in this embodiment) is designed to be detached from the left side wall portion 19 by pressing two operation buttons 72 (see FIG. 11 ) provided radially opposite each other at the left end, so that the user (usually the child's parent and a passenger on the bicycle 100) can easily detach the grip bar 71 before seating the child on the seat portion 12.

As shown in FIG. 11, when the left end of the grip bar 71 is detached from the left side wall portion 19, the grip bar 71 can be rotated about its right end so that the detached left end is positioned below the other end (right end), and thus the grip bar 71 does not get in the way when the user seats the child on the seat portion 12.

On the other hand, the right end of the grip bar 71 can be removed from the right side wall 19, but is not easily removable. That is, instead of the two operation buttons 72, two insertion holes 73 are provided at the right end of the grip bar 71. The diameter of each insertion hole 73 is so small that a user's or a child's finger cannot enter it. By inserting a rod-shaped member 74 (see FIG. 13) having a small diameter into each insertion hole 73 and pressing a pin member 77 described below, the right end of the grip bar 71 can be removed from the right side wall 19. The rod-shaped member 74 may be any member that can be inserted into each insertion hole 73 and press the pin member 77. The rod-shaped member 74 may be, for example, a member made as a jig.

The detailed configuration of the right end of the grip bar 71 is explained with reference to Figures 12 and 13.

A cylindrical member 76 is fixed to the front end of the right side wall 19 via an attachment member 75 so as to protrude forward. The attachment member 75 is composed of two members 75a and 75b, and is fixed to the front end of the right side wall 19 with the front end of the right side wall 19 sandwiched between these two members 75a and 75b. The cylindrical member 76 is fixed to one of the members, member 75a.

The protruding tip (front end) of the cylindrical member 76 is closed. Two radially opposing through holes 76a are formed in the outer peripheral wall near the protruding tip of the cylindrical member. Pin members 77 are fitted into the two through holes 76a, and the pin members 77 are biased by a roughly V-shaped leaf spring member 78 disposed inside the cylindrical member 76 so as to protrude radially outward beyond the outer peripheral wall of the cylindrical member 76.

The right end of the grip bar 71 is composed of a fitting member 81 that fits externally into the tubular member 76. The fitting member 81 has a fitting hole 81a that opens on the end face of the fitting member 81 and fits into the tubular member 76. The diameter of the fitting hole 81a is approximately the same as the outer diameter of the outer peripheral wall of the tubular member 76. At the back side of the fitting hole 81a, two pin accommodating spaces 81b that extend radially outward from the inner peripheral surface of the fitting hole 81a are provided so that two pin members 77 that protrude radially outward from the outer peripheral wall of the tubular member 76 are respectively accommodated. As shown in FIG. 12, when two pin members 77 are accommodated in the two pin accommodating spaces 81b, each pin member 77 is caught on the wall portion of the fitting hole 81a side of each pin accommodating space 81b, and the tubular member 76 does not come out of the fitting hole 81a. In other words, the right end of the grip bar 71 cannot be removed from the tubular member 76 (i.e., the right side wall portion 19).

The two insertion holes 73 are formed so as to communicate with the two pin accommodating spaces 81b in the fitting member 81. As shown in FIG. 13, by inserting a rod-shaped member 74 into each insertion hole 73 and pressing the pin member 77, the pin member 77 can be pushed into the through hole 76a. This allows the right end of the grip bar 71 to be removed from the tubular member 76.

To attach the right end of the grip bar 71 to the right side wall 19 (tubular member 76), it is sufficient to externally fit the fitting member 81 that constitutes the right end of the grip bar 71 onto the tubular member 76. At this time, the two pin members 77 that protrude radially outward from the outer peripheral wall of the tubular member 76 are pressed into the through hole 76a by the tapered surface 81c provided on the periphery of the fitting hole 81a on the end face of the fitting member 81, making it possible for the tubular member 76 to be inserted into the fitting hole 81a. Then, just before the insertion is completed, the pin members 77 protrude into the pin storage space 81b. Therefore, the right end of the grip bar 71 can be easily attached to the right side wall 19.

As with the right side wall portion 19, a cylindrical member 76 is fixed to the front end of the left side wall portion 19 via an attachment member 75. The cylindrical member 76 of the left side wall portion 19 also has a pin member 77 protruding radially outward from the outer peripheral wall portion of the cylindrical member 76 via a through hole 76a.

The left end of the grip bar 71 has the same configuration as the right end of the grip bar 71, except for the operation button 72. That is, the operation button 72 is provided in the fitting member 82 constituting the left end of the grip bar 71 at a portion corresponding to the insertion hole 73 of the fitting member 81, and by pressing the operation button 72, the pin member 77 can be pressed and pushed into the through hole 76a. In addition, in order to attach the left end of the grip bar 71 to the left side wall portion 19, it is only necessary to externally fit the fitting member 82 constituting the left end of the grip bar 71 to the cylindrical member 76, as in the case of the right end of the grip bar 71. Therefore, the left end of the grip bar 71 can be easily attached to and detached from the left side wall portion 19. This reduces the effort required for the user to seat the child on the seat portion 12.

In this embodiment, the seat cushion support member 32 is attached to the underside of the seat cushion member 31, and the back cushion support member 36 is attached to the rear surface of the back cushion member 35. Therefore, even if the seat cushion member 31 and the back cushion support member 36 are exposed to direct sunlight for a long period of time, they will not shrink, and the ends of the cushion members 31 and 35 will not bend toward the opposite side of the seat body 11.

In addition, the seat cushion member 31 is attached to the seat portion 12 of the seat body 11 via the seat cushion support member 32, and the back cushion member 35 is attached to the backrest portion 14 of the back portion 13 of the seat body 11 via the back cushion support member 36, so that the seat cushion member 31 and the back cushion member 35 can be easily attached to the seat body 11 so as not to come off from the seat body 11.

Furthermore, by inserting the insert portion 32a of the seat cushion support member 32 into the folded portion 31a of the seat cushion member 31 and the insert portion 36a of the back cushion support member 36 into the folded portion 35a of the back cushion member 35, it is possible to make it difficult for the seat cushion member 31 to come off from the seat cushion support member 32 and the back cushion member 35 to come off from the back cushion support member 36 with a simple configuration. In addition, by inserting the insert portions 32a, 36a into the folded portions 31a, 35a, it is possible to effectively suppress shrinkage and warping of the seat cushion member 31 and the back cushion member 35.

The present invention is not limited to the above-described embodiments, and substitutions are possible without departing from the spirit of the claims.

For example, in the above embodiment, the seat cushion member 31 is attached to the seat portion 12 of the seat body 11 via the seat cushion support member 32, and the back cushion member 35 is attached to the backrest portion 14 of the back portion 13 of the seat body 11 via the back cushion support member 36, but the seat cushion member 31 to which the seat cushion support member 32 is attached may be attached directly to the seat portion 12, and the back cushion member 35 to which the back cushion support member 36 is attached may be attached directly to the backrest portion 14.

In addition, a support member for supporting the cushion member may be attached to the surface of the cushion member other than the seat cushion member 31 and the back cushion member 35 facing the seat body 11. For example, a head cushion support member may be attached to the head cushion member 42. In this case, it is preferable that the head cushion member 42 is attached to the head guard 41 (which can be considered as the seat body 11) via the head cushion support member. In addition, when side cushion members are attached to the surfaces of the side wall portions 19 on both the left and right sides facing the seat occupant, side cushion support members may be attached to the surfaces of these side cushion members facing the seat body 11. In this case, it is preferable that the side cushion members are attached to the side wall portions 19 via the side cushion support members.

In the above embodiment, the cushion member of the child seat 10 is attached to the carrier 125 of the bicycle 100, but the support member may be attached to the cushion member of the child seat that is attached to the handlebars 107, for example.

The above-described embodiments are merely illustrative and should not be interpreted as limiting the scope of the present invention. The scope of the present invention is defined by the claims, and all modifications and variations that fall within the scope of the claims are within the scope of the present invention.

The present invention is useful for a child bicycle seat that can be attached to a bicycle, and for the bicycle to which this child bicycle seat can be attached.

REFERENCE SIGNS LIST 10 Child seat for bicycle 11 Seat body 12 Seat portion 13 Back portion 31 Seat cushion member 31a Folded portion 32 Seat cushion support member 32a Insertion portion 35 Back cushion member 35a Folded portion 36 Back cushion support member 36a Insertion portion 100 Bicycle

Claims (5)

A bicycle child seat that is attached to a bicycle,
A seat body including a seat portion and a back portion erected on the rear side of the seat portion;
a cushion member attached to a surface of the seat body facing the seat occupant and made of a material including a foamed resin;
A support member for supporting the cushion member is attached to a surface of the cushion member on the seat body side,
The support member has an insertion portion, and the insertion portion is inserted into the cushion member .
A folded-back portion having a generally U-shaped cross section is provided at a plurality of locations spaced apart from each other around the entire circumference or in the circumferential direction of the outer peripheral end portion of the cushion member, the folded-back portion being folded back from the seat occupant side to the seat body side and into which the insertion portion is inserted,
This child bicycle seat is characterized in that , when viewed from the rear to the front, the folded-back portion located on the left side and the folded-back portion located on the right side are folded back in opposite directions to each other. 2. The child bicycle seat according to claim 1,
13. A child bicycle seat, comprising: a support member having a recessed hole; A bicycle child seat that is attached to a bicycle,
A seat body including a seat portion and a back portion erected on the rear side of the seat portion;
a cushion member attached to a surface of the seat body facing the seat occupant and made of a material including a foamed resin;
A support member for supporting the cushion member is attached to a surface of the cushion member on the seat body side,
The support member has an insertion portion, and the insertion portion is inserted into the cushion member.
The support member has a lightening hole,
2 is a perspective view of a child seat for a bicycle according to the first embodiment of the present invention; FIG. 3 is a perspective view of a child seat for a bicycle according to the first embodiment of the present invention; A bicycle child seat that is attached to a bicycle,
A seat body including a seat portion and a back portion erected on the rear side of the seat portion;
a cushion member attached to a surface of the seat body facing the seat occupant and made of a material including a foamed resin;
A support member for supporting the cushion member is attached to a surface of the cushion member on the seat body side,
The support member has an insertion portion, and the insertion portion is inserted into the cushion member.
The support member has a lightening hole,
The support member is lattice-shaped,
A child bicycle seat, wherein the lightening holes are lattice holes. A bicycle equipped with a child bicycle seat according to any one of claims 1 to 4.

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