JP5410772B2 - Infant seat for bicycle - Google Patents

Description

  The present invention relates to a front passenger seat that is disposed between a rear side of a handle stem of a bicycle and a front side of a saddle.

A front passenger seat mounted on a bicycle includes a seat body for seating the infant, and attachment means for attaching the seat body to the handle stem of the bicycle (see, for example, Patent Document 1). ).
In the conventional infant passenger seat as described in Patent Document 1, the seat body is supported via a support stay extending rearward from the attachment means for sandwiching the handle stem. The seat body is a chair type with a depth in the front-rear direction so that the infant can sit deeply including not only the buttocks and the thighs.

Such a front passenger seat is convenient in that the bicycle can be driven while watching the infant riding, but in addition to the chair body having a deep seat, the handle stem and the mounting means Since the support stay is interposed between the two, the amount of rearward protrusion from the handle stem increases and the driver's boarding space becomes unavoidable.
Therefore, the infant passenger seat should be brought closer to the front of the bicycle as close as possible to the bicycle's handle stem, ensuring a wide space between the rear edge of the infant passenger seat and the front edge of the bicycle saddle. The thing which can improve the ease and the steering property of a handle | steering-wheel is proposed (refer patent document 2).

  This infant passenger seat achieves the purpose of bringing the infant passenger seat closer to the front of the bicycle by arranging the part that supports the infant's thigh to the left and right sides of the handle stem of the bicycle. ing. In short, when the infant is seated against this infant seat, the infant will be in a posture that sandwiches the handlebar stem of the bicycle at the crotch and throws out both feet forward, so that most of the legs exceed the handlebar stem. Sit down to the front.

  In this way, since the infant's legs are thrown forward beyond the handlebar stem of the bicycle, this infant seat device is also proposed to be configured with a dedicated front basket, although it is not essential. It is devised to be able to support both feet of the infant in the front basket.

Japanese Utility Model Publication No. 51-140943 JP 2007-302228 A

  Even in the infant passenger seat of Patent Document 2, the effect of moving to the front as much as possible in the state of being mounted on a bicycle is sufficiently obtained. However, as the infant passenger seat is moved to the front, the handle stem and Infants' riding space between the steering wheel and the child's feet is reduced, and the infant's feet are more likely to interfere with the steering wheel, etc., making it easier for the bicycle driver to drive and get on and off and for the infant to easily get on and off. That was also a contradictory issue.

In addition, although the infant passenger seat of Patent Document 2 is not essential, it is planned to use a dedicated front basket. To retrofit the seat, the existing front basket had to be removed.
The present invention has been made in view of the above circumstances, and even if the infant passenger seat is mounted in the front space of the bicycle (between the rear of the handle stem and the front of the saddle), the rear end of the infant passenger seat is provided. And the front edge of the saddle of the bicycle can be made as wide as possible, making it easier for the driver to get on and off and improving the steering of the handle, making it easier for the infant to get on and off. The purpose is to provide an infant passenger seat that can be used together with other types of front baskets.

In order to achieve the above object, the present invention has taken the following measures.
That is, the infant seat for bicycles according to the present invention is disposed between the rear of the handle stem of the bicycle and the front of the saddle, and includes a seat book and an attaching means for attaching the seat body to the bicycle. Have. The seat body includes a seat surface that supports only the buttocks of the infant's buttocks and left and right thighs to be seated, and the left and right thighs while supporting the perineum or inner thigh of the infant seated on the seat surface. and a crotch saddle unloading lowered lateral distribution shape, and a foot rest support part with a footrest mounting the lower unloaded infants foot. On the other hand, the attachment means is provided at the front part of the crotch part.

The crotch portion of the seat body has a shape in which the front portion of the seat surface projects in a tapered shape while constricting the front portion of the seat surface with a symmetrical concave curved surface, and the seat surface with respect to the front of the curved surface It is characterized in that a vertical space for lowering and lowering the thigh is formed so that the infant's knee is lower .
In this way, since the crotch portion is provided so as to project from the front of the seat surface supporting the infant's buttocks through a concave curved surface symmetrical to the left and right, the infant can place only the buttocks on the seat surface. The left and right thighs are curved in a concave manner so that the infant's knee is positioned lower than the seat through the vertical space formed in front of the left and right concave curved surfaces and on the left and right sides of the crotch. It is possible to take a riding posture in which it is lowered from the crotch part to the left and right along the surface and the toes are placed on the footrest part.

  Therefore, it is sufficient that the seat surface has a length that allows only the infant's buttocks to be placed thereon, and the crotch part also serves as a support stay of Prior Art Document 1, and the infant's feet are lowered. As a result, it is difficult to interfere with the handlebars etc. as a result, and as a result, the infant passenger seat can be mounted close to the bicycle handle stem, and the distance between the rear edge of the infant passenger seat and the saddle is reduced. Can be as wide as possible. In addition, the steering performance of the steering wheel is improved by bringing the infant passenger seat closer to the steering wheel stem of the bicycle.

Moreover, unlike the prior art document 2, since the infant does not throw both feet forward beyond the handlebar stem of the bicycle, the infant can simply be moved up and down just above the seat surface. It can be done and is smooth and easy.
In the above configuration, the footrest support portion includes a side support portion provided in a left-right distribution shape downward from the crotch portion of the seat body, and each of the side support portions includes the crotch portion. A bulging surface that bulges in the laterally outward direction can be provided.

As a result, the infant's inner crotch can be brought into contact with the bulging surface of the side support part, and the crotch is tightened and the crotch part and the bulging surface of each side support part are sandwiched from the left and right with the inner crotch and knees. It is also possible to naturally encourage the infant to take a knee grip posture so as not to wander.
Further, the footrest support portion has a rear support portion that is continuous from each curved surface of the seat surface of the seat body, and each rear support portion protects an outer portion of the lowered foot of the infant. An outer protective part can be provided.

  Further, the front part of the crotch part can be provided with a crotch part that is pushed forward, and it is possible to support the crotch of an infant seated in a forward leaning position at this crotch part. is there.

  According to the infant passenger seat for bicycles according to the present invention, even if this infant passenger seat is mounted between the rear of the handlebar stem of the bicycle and the front of the saddle, the rear end of the infant passenger seat and the bicycle are compared with the conventional one. The distance between the front edge of the saddle and the saddle can be widened, and it is easy for a bicycle driver to get on and off and an infant to get on and off, so that suitable maneuverability can be secured.

It is the side view which showed the mounting state to the bicycle of the infant passenger seat of 1st Embodiment which concerns on this invention. It is an AA arrow line view of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is a disassembled perspective view of the elastic sleeve employ | adopted by the attachment means. It is the side view which showed the infant passenger seat of FIG. FIG. 6 is a perspective view corresponding to FIG. 5. It is the top view which showed only the seat surface and crotch part of the seat main body. It is CC sectional view taken on the line of FIG. It is a perspective view of 2nd Embodiment which concerns on this invention. It is a perspective view of 3rd Embodiment which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a first embodiment of a bicycle infant seat 1 according to the present invention. As shown in FIGS. 1, 2, and 5, the bicycle infant seat 1 has a seat body 2 and attachment means 3, and can be attached to the bicycle 4 via the attachment means 3. it can.
The seat body 2 includes a seat surface 5, a crotch portion 6, a pair of left and right footrest support portions 7, and a pair of left and right footrest portions 8. Further, the seat surface 5 has handrail portions 9 on both left and right sides thereof. And the backrest part 10 is provided in the rear part. These can be integrally formed of a resin material as appropriate as the seat body 2. Further, the backrest portion 10 is provided so that the headrest 11 can be raised and lowered so that the height can be adjusted, and the headrest 11 can be stored inside the backrest portion 10 and the handrail portion 9 in a lowered state. ing.

  The seat surface 5 is formed with an upper surface that is wide in the left-right direction so as to support the infant's buttocks on the surface. The crotch portion 6 is tapered from the front of the seat surface 5 through a concave curved surface 12 symmetrical to the left and right sides so as to lower and lower the left and right thighs of the infant seated on the seat surface 5 in a laterally distributed manner. The left and right sides of the front part are formed so as to protrude forward while being equally bound inward. There is no visually distinguishable separation between the seating surface 5 and the crotch portion 6, and in a plan view, as shown in FIG. 7, it has a shape reminiscent of a ginkgo leaf shape. It has become.

  It should be noted that the shape in which the front portion of the seating surface 5 is constricted in the crotch portion 6 means that each of the curved surfaces 12 corresponding to the front edge of the seating surface 5 when an infant sitting with most of the weight on the seating surface 5 is used. Lower the legs (legs) down and down (hang down) so that the knee is positioned lower than the seat surface 5 as a natural posture without squeezing the back of the thighs of the left and right thighs. It expresses that it is dented inward so that it can be.

As a result, the infant can straddle the crotch part 6 with only the buttocks supported on the seat surface 5, and can maintain the posture in which the infant's perineum is supported by the crotch part 6.
In short, the infant places the buttocks on the seat surface 5 and lowers the lower part of the thigh through the vertical space formed in front of the left and right concave curved surfaces 12 and the left and right sides of the crotch part 6. Since it is possible to take the riding posture of placing the toes on the footrest portion 8, it is sufficient that the front and rear dimensions of the seating surface 5 are such that only the buttocks of the lower body of the infant can be placed.

  Further, as shown in FIG. 8, the crotch portion 6 is formed in a curved shape (inverted U-shape) in which the front cross-sectional shape is convex upward, whereby the infant has a posture that straddles the crotch portion 6. It has become easy. Further, as shown in FIGS. 1 and 3, a front portion of the crotch portion 6 is provided with a crotch portion 6f that is pushed forward, and this crotch portion 6f is shown in FIGS. As can be seen in the plan view of this, it is possible to support and gently support the crotch of an infant seated in a forward leaning posture, coupled with the fact that it has a curved surface in the forward direction and expands left and right It has become.

And it is preferable to attach the cushioning material 13 to the seat surface 5 and the crotch portion 6 as appropriate. In this embodiment, not only the crotch portion 6 including the seat surface 5 and the crotch portion 6f but also the following description will be given. The side support portion 7b of the footrest support portion 7 is also covered with a cushion material 13 extended downward.
Next, the footrest support portions 7 are distributed on the left and right sides of the crotch portion 6, and in this embodiment, the rear support portions 7 a that are continuously extended from the curved surfaces 12 of the seat surface 5. The side support part 7b extended continuously from right and left of the crotch part 6 is provided. And this side support part 7b is formed so that the right and left hems of the upward convex curve shape which the crotch part 6 exhibits may be extended downward, and from the upper peripheral surface of the crotch part 6, the crotch part 6 is continuously formed. A bulging surface 14 is formed that bulges in a curved manner to the left and right outwards. The term “extension” here is not limited to integral molding, but represents a point having a line (contour line) obtained by extending an upwardly convex curved line as it is. The support portion 7 can be formed separately from the seat body 2 including the crotch portion 6.

  Further, the rear support portion 7a of each footrest support portion 7 is provided with an outer protection portion 7c that protects the outer portion of the infant's foot that has been lowered, facing each side support portion 7b. In this embodiment, the outer protection portion 7c is formed continuously from the handrail portion 9 to be described later so as to protect the entire outer portion of the infant's foot. In order to protect only a part, for example, it can be provided only on the outer portion of the footrest 8.

Thus, in this embodiment, the footrest support portion 7 covers not only the side support portions 7b that contact the infant's inner crotch, but also the rear support portion 7a that covers both feet of the infant from the back, and the outer side surfaces of both feet of the infant. The outer protection portion 7c is provided.
The footrest support portion 7 is connected to the front fork 17 from the turning shaft (steering axis when the steering wheel is steered) in the handle stem 15 of the bicycle 4 in relation to the attachment portion 3. It is set along the left and right sides, and a footrest portion 8 is provided at the lower end portion of the footrest support portion 7. The footrest 8 is disposed rearward of the front basket 18 that is mounted on the front side of the handle stem 15 of the bicycle 4 and is set so as not to contact and interfere with the front basket 18.

  From such a configuration, when the infant is seated on the seat surface 5, a state in which the infant's inner crotch gently touches along the bulging surface 14 of the side support portion 7b is naturally created. Easier to place your foot on 8 Thus, even an infant who does not have knowledge of knee grip can be encouraged to perform this knee grip, and the infant tightens the crotch so as to sandwich the bulging surface 14 of the crotch part 6 or the side support part 7b from the left and right. As a result, the wobbling of the body is prevented and the sitting stability is increased.

Next, the handrail portion 9 is located on both the left and right sides of the seat surface 5 and protrudes forward from the left and right sides of the backrest portion 10, and the lower front edge of the handrail portion 9 faces rearward. A concave portion 9a having a curved curve is formed.
In the present embodiment, the curve that is formed so as to turn the lower front edge portion of the concave portion 9a of the handrail portion 9 is extended to the front lower side of the seat surface 5 as it is, and the curve that is reversely warped in the turning direction is smooth and continuous. The rear support portion 7a and the outer protection portion 7c of the footrest support portion 7 are formed by this reverse warping curve. For this reason, the load acting on the handrail portion 9 and the footrest support 7 is evenly distributed by the continuous S-shaped curve in this manner, and stress concentration is less likely to occur. In short, there is an advantage that the seat body 2 as a whole is a strong structural body, and this can be used to contribute to a reduction in thickness, weight reduction, cost reduction, and the like.

In addition, the "handrail part" as used in this embodiment is a protector for protecting the shoulder and arm of an infant at the time of a fall, in addition to a literal handrail provided on both sides of a seat, preventing armrests and falling to the left and right Are provided for the purpose of at least one of the above.
Next, the attachment means 3 holds the handle stem 15 of the bicycle 4 at the front guard portion 19 provided so as to rise upward from the crotch portion 6 f formed at the front portion of the crotch portion 6 of the seat body 2. It is configured.

That is, as shown in FIGS. 2, 3, and 6, the attachment means 3 includes a rear half holding body 21 formed by the front portion of the front guard portion 19, and the holding half body 21. The holding halves 22 are configured to be detachable, and both the holding halves 21 and 22 pass through the center in the horizontal direction in the vertical direction so that each of the vertical halves has an arc shape. Grooves 21a and 22a are formed.
In the present embodiment, sleeves 24, 24 such as a half-cylindered flanged cylinder as shown in FIG. 4 are interposed in the arc-shaped vertical grooves 21a, 22a to prevent rotation and backlash. As shown in FIG. 3, the handle stem 15 is clamped by fastening with the bolts 23 penetrating the holding halves 21 and 22, and the infant passenger seat 1 of the present embodiment is placed behind the handle stem 15. It is configured to be attached to the handle stem 15 of the bicycle 4 between the front of the saddle S.

  An infant handle portion 20 is provided on the upper portion of the front guard portion 19 so as to protrude left and right. When the infant passenger seat 1 is attached to the bicycle 4, the front guard portion 19 is attached to the handle stem 15 of the bicycle 4. The handle stem 15 is covered (hidden) when viewed from the seat surface 5 side. As a result, the infant riding seat 1 can be mounted with the seat surface 5 closer to the handle stem 15. Particularly in the present embodiment, the inside of the front guard portion 19 is hollowed forward, and a part of the handle stem 15 is fitted in this cavity. Thus, the seating surface 5 can be mounted close.

  As described above, since the crotch portion 6 is provided so as to project from the front of the seat surface 5 that supports the infant's buttocks via the concave curved surface 12 that is symmetrical to the left and right, the infant can only take the buttocks. Put on the seat surface 5 and support the perineum or inner crotch with the crotch portion 6, with the knees positioned lower than the seat surface 5, and the left and right thighs in front of the left and right concave curved surfaces 12. The riding posture is such that it is lowered from the crotch part 6 to the left and right side in a vertically distributed manner along the concave curved surface 12 through the vertical space formed at the left and right side positions, and the toes are placed on the footrest part 8. Can take.

  Therefore, it is sufficient if the front and rear length of the seating surface 5 is sufficient to allow only the infant's buttocks to be placed thereon. Further, since the attachment means 3 is configured in the front guard portion 19 at the front portion of the crotch portion 6, the crotch portion 6 supports a role corresponding to a support stay that supports the seat surface 5, and supports the infant's perineum or inner crotch. While moving the left and right thighs and lowering the legs to make it less likely to interfere with the handle etc., as a result, the infant passenger seat is installed close to the bicycle handle stem The distance between the rear end of the infant passenger seat and the saddle can be made as wide as possible. In addition, the steering performance of the steering wheel is improved by bringing the infant passenger seat closer to the steering wheel stem of the bicycle.

In addition, since the infant does not throw out both feet forward beyond the handle stem 15 of the bicycle 4, the infant can be loaded and unloaded simply by moving the lifted infant simply up and down above the seat surface 5. And easy.
Furthermore, each footrest support portion 7 has a rear support portion 7a that is continuous from each curved surface 12 of the seat surface 5 and a side support portion 7b that is continuous from the left and right of the crotch portion 6, and each of these side support portions. 7b is provided with a bulging surface 14 that bulges to the left and right outwards of the crotch portion 6, so that it is possible to naturally create a state where the inner crotch of the infant contacts the bulging surface 14 of each side support portion 7b. It is possible to naturally encourage an infant to take a knee grip posture to tighten the crotch and sandwich the bulging surface 14 of the crotch part 6 and each side support part 7b from the left and right to prevent the body from wobbling. This can compensate for the fact that the front portion of the seat surface 5 is a crotch portion 6 that is constricted from the left and right, and can improve the sitting stability of the infant. Further, since each footrest support portion 7 is composed of a rear support portion 7a and a side support portion 7b, each footrest support portion 7 is advantageous in terms of strength, and the outer protection portion 7c is arranged in a left-right distribution manner. It can protect the outer surface of both legs of a suspended infant. In addition, since this outer side protection part 7c is formed so that it may continue from the recessed part 9a of the said handrail part 9, the backrest part 10 and each footrest support part 7 will be excellent also in intensity | strength.

  FIG. 9 is a perspective view of the infant passenger seat 1 according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in that a curve that covers the lower front edge of the concave portion 9a of the handrail portion 9 is continuous below the concave curved surface 12, The support portion 7 is not provided with portions corresponding to the rear support portion 7a and the outer protection portion 7c of the first embodiment, and the same portions as those of the first embodiment are denoted by the same reference numerals and detailed. Description is omitted.

FIG. 10 is a perspective view of the infant passenger seat 1 according to the third embodiment of the present invention. The difference of the third embodiment from the first embodiment is that the handrail portion 9 is not provided with a recess 9a, and the outer edge line of the handrail portion 9 continues to the outer protection portion 7c of the footrest support portion 7 as it is. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
By the way, this invention is not limited to the said embodiment, It can change suitably according to embodiment.

  For example, the detailed shape of the seat surface 5, the crotch part 6, the handrail part 9, and the like is not particularly limited. In addition, the shape of the backrest part 10 provided in the rear part of the seat surface 5, the shape of the headrest 11, the presence / absence of the lifting mechanism of the headrest 11 and the like are not limited at all.

DESCRIPTION OF SYMBOLS 1 Infant seat 2 Seat main body 3 Attachment means 4 Bicycle 5 Seat surface 6 Crotch part 7 Footrest support part 8 Footrest part 12 Curved surface 15 Handle stem

Claims (4)

In the infant seat for bicycles arranged between the rear of the handle stem (15) of the bicycle (4) and the front of the saddle (S),
A seat body (2) and attachment means (3) for mounting the seat body (2) to the bicycle (4);
The seat body (2) supports a seat surface (5) for supporting only the buttocks of the infant to be seated and the left and right thighs, and a perineum or inner thigh of the infant seated on the seat surface (5). provided with a crotch saddle unloading lowered lateral thigh lateral distribution shape (6), the supporting portion footrest with footrest mounting the lower unloaded infants legs (8) and (7),
The attachment means (3) is provided in the front part of the crotch part (6),
The crotch part (6) of the seat body (2) has a shape protruding in a tapered manner while constricting the front part of the seating surface (5) with a symmetrical concave curved surface (12), and An infant for a bicycle characterized by forming a vertical space for lowering and lowering the thigh so that the knee of the infant is lower than the seat surface (5) with respect to the front of the curved surface (12) Passenger seat.   The footrest support portion (7) has a side support portion (7b) provided in a left-right distributed manner downward from the crotch portion (6) of the seat body (2). The infant seat for riding a bicycle according to claim 1, characterized in that the part (7b) is provided with a bulging surface (14) that bulges in the laterally outward direction of the crotch part (6).   The footrest support portion (7) has a rear support portion (7a) continuous from each curved surface (12) of the seat surface (5) of the seat body (2), and each rear support portion (7a). The infant passenger seat for bicycles according to claim 1 or 2, further comprising an outer protection portion (7c) for protecting an outer portion of the infant's foot that is lowered.   The front part of the crotch part (6) is provided with a crotch part (6f) which is formed in a front-up shape, according to any one of claims 1 to 3. Infant seat for bicycles.

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