JP3143788U - Bicycle with infant seat - Google Patents

Abstract

Provided is a bicycle in which an infant seat that can be freely steered and a seat for a child can be attached instead of the seat when the seat is unnecessary.
A lower part of an infant seat is fitted to a head tube of a frame with a mounting tool, and a long base portion bent in a U-shape of a handle is attached to an upper end portion of a steering column in the head tube. In addition, the elongate bag is bent without coming into contact with both sides from the bottom of the infant seat, and can be freely steered. When the seat is not used, a luggage can be mounted instead of the seat.
[Selection] Figure 1

Description

  The present invention relates to a bicycle on which an infant seat is mounted.

Commercially available infant seats for bicycles are supposed to comply with certification standards including a high-back backrest, a head guard, and a seat belt (see Non-Patent Document 1).
Further, Patent Documents 1 and 2 are presented as documents relating to an infant seat to be attached to the handle part. However, the infant seat and the handle are integrated, and the load on the infant seat and the rotation of the handle are considered. The increase in the inertia performance ratio increases the steering force of the steering wheel, which causes a delay in steering, impairs stability, and when the position of the center of gravity between the infant and the seat deviates from the steering column in the steering wheel support position, The efficiency is further increased, and even in the slight tilting of the vehicle body, the tilting moment is amplified to amplify the steering angle displacement, and it is pointed out that it may cause an unexpected fall, and it is equipped between the rear of the steering wheel and the saddle The infant seat is close to the driver and has the advantage of protecting the infant between the arms, but there is a concern that it may become an obstacle to steering the steering wheel.

"Certification criteria and standard checking method for infant seats for bicycles", Japan Product Safety Association revised 18 Safety Industry G stand 78, March 30, 2007, Japan Product Safety Association JP-A-2005-132220 JP 2002-240763

  The present invention has been made in view of the above-mentioned problems in the background art. The purpose of the present invention is to mount an infant seat on the head tube of the frame, support the load between the infant and the seat, A U-shaped handle base is supported at the upper end of the steering column, and the handle can be bent without touching the seat so that it can be steered freely. When the seat is not used, instead of the seat, A bicycle equipped with an infant seat that can be loaded with cargo will be provided.

  In order to achieve the above object, the bicycle to which the infant seat according to the present invention is attached is fitted to the head tube of the frame with the lower part of the infant seat with the mounting tool and attached to the upper end of the steering column supported by the head tube. The base part of the eaves bent in the U-shape of the handle is attached, and the elongate eaves are bent without coming into contact with both sides from the bottom of the infant seat and can be freely steered.

  Further, in the above solution, when the infant seat is not necessary, the seat is removed, and the mounting tool is a cargo bag integrally formed with a front bag and a rear bag on the front of the mounting tool. Can be mounted while avoiding contact with the long rod at the steering position, and can be freely steered.

  The operation of the above problem solving means is as follows. In other words, when the infant is placed on the infant seat and the rider operates the handle, the eaves of the handle are bent to avoid contact with the seat, and the handle can be operated freely without contacting the seat However, the load between the infant and the seat is supported on the head tube side, there is no effect on the steering column and the inertia ratio, the steering force of the steering wheel is reduced, and the stability of the vehicle body is improved by smooth steering. In addition to the improvement, the conventional vehicle body that supports the seat on the side of the handlebar has no unexpected load deviation that is likely to occur when the vehicle is stopped, and prevents a fall. Further, in the above solution, when the infant seat is not used, the same function as described above is exhibited even when a cargo bag is attached instead of the seat.

  The bicycle equipped with the infant seat according to the present invention, claim 1 is attached to the head tube of the frame to support the total load between the infant and the seat, and there is no influence on the load on the steering wheel and the inertial performance ratio. Steering force is reduced, the steering wheel is bent to avoid contact with the seat, the steering wheel can be operated freely without contacting the seat, and smooth steering improves the stability of the vehicle body In the conventional vehicle body, there is no unexpected load deviation that is likely to occur at the time of stopping, and the fall can be prevented.

  The bicycle equipped with the infant seat according to the present invention has the above-described characteristics, and the conventional infant seat and the handle are integrated into a unitary structure. Steering force increases, causing a delay in steering, impairing stability, and when the center of gravity of the infant and the seat is unevenly distributed with respect to the steering wheel support position, the inertial performance ratio further increases and the vehicle body tilts slightly. However, there is a tendency to amplify the tilting moment, amplify the steering angle displacement, and cause an unexpected fall, and the infant seat installed between the steering wheel and the saddle is close to the driver and between the arms. This has the advantage of protecting infants, but it eliminates problems such as obstacles to steering.

  Further, in the above solution means, when the infant seat is not used, the same effect as described above can be obtained even when a cargo bag is attached instead of the seat.

  As an embodiment of the invention, an eaves in which the lower part of the seat of the infant seat is fitted to the head tube of the frame with a mounting tool, and the upper end of the steering column in the head tube is bent into a U-shape of the handle. The fork is bent without contacting the sides of the infant seat from the bottom of the infant seat and can be steered freely. The fork attached to the lower end of the steering column is pivoted on the front wheel. Supporting the infant and seat load on the head tube side of the frame when carrying out the device, the influence on the steering column and the influence of the inertia ratio are reduced, reducing the steering force of the steering wheel, Smooth steering improves the stability of the vehicle body, and in the conventional method of supporting the infant seat on the handle side, it prevents accidental falling accidents caused by deviation of the seat side load when the vehicle body stops. It is set to be.

  1 to 5, the lower part of the seat (51) of the infant seat (5) is fitted to the head tube (11) of the frame (1) by the mounting tool (50), and the steering column ( 12) At the upper end of the handle (4), the base of the elongate hook (41) bent into a U-shape is attached, and the elongate hook does not come into contact with both sides from the bottom of the infant seat (5). It is curved and can be steered freely.

  The specifications of the infant seat (5) are as follows, according to “Non-Patent Document 1“ Accreditation Standards and Standard Confirmation Method for Bicycle Infant Seats ”, Revision 18 of the Safety Association of the Product Safety Association of Japan No. 78 (11), the lower part of the seat (51) is fitted by the mounting tool (50), the so-called high-back backrest (52) is set to have an upward inclination (α) of 110 degrees, and the seat (51 Head guards, that is, temporal protection devices (53) are juxtaposed on both sides of the backrest with a height of 0.44m or more from the seating surface of the seat), and a footboard above the front wheel (2) at the front of the seat (51) (54) is laid, foot guards (55) are attached to both sides of the footboard, a front protective plate (56) is erected in front of the seat above the foot guard, and an infant grip (57 ) And with a temporal protection (53) from the front center of the seat (51) Between, wearing the seat belt (58). The front wheel (2) in the figure has a smaller diameter than the rear wheel (3) to reduce the ground clearance of the infant seat, but when the front wheels are smaller than 24 inches, the front and rear wheels have the same diameter. It is good also as a wheel.

  The fork (21) held on the lower end of the steering column (12) supports the front wheel (2), and, together with the handle (4), the steering angle regardless of the infant seat (5). As (θ), 60 degrees or more is secured.

  As described above, since the entire load of the infant and the seat is supported on the head tube side of the frame, there is no influence on the load on the handle (4) or the steering column (12) and the inertia ratio due to the load. Steering force of the steering wheel is reduced, smooth steering is possible, and the stability of the vehicle body is improved, and in the conventional infant seat support system, a fall accident due to an unexpected load bias that is likely to occur at the time of stopping is prevented. Can do.

  The lower part of the seat (51) of the infant seat (5) is fitted to the head tube (11) of the frame (1) by the mounting tool (50), and the upper end of the steering column (12) in the head tube is attached to the head tube (11). The handle (4) has a U-shaped bent gutter (41) with a base, and the elongate gutter is bent without touching both sides from the bottom of the infant seat (5). When the infant seat (5) is not required, the seat is removed, and the mounting tool (50) has a front heel (60) and a rear heel ( 61) can be mounted while avoiding contact with the long rod (41) at the steering position, and can be freely steered.

  1 is an elevational view of a side of a bicycle on which the present invention and an infant seat are mounted. Example 1   It is a top view of FIG. Example 1   FIG. 2 is an elevational view around the infant seat viewed from the front wheel side in FIG. 1. Example 1   It is a perspective view of the bicycle which mounts this invention and the infant seat. Example 1   It is a perspective view of the principal part detail of the infant seat in FIG. 1 thru | or FIG. Example 1   It is an elevation view which shows the Example which mounted | wore with the cargo bag instead of the infant seat of FIG. (Example 2)   FIG. 7 is a plan view of FIG. 6. (Example 2)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 11 Head tube 12 Steering column 2 Front wheel 21 Fork 3 Rear wheel 4 Handle 41 Long sleeve 5 Infant seat 50 Wearing tool 51 Seat 52 Backrest 53 Side head protector 54 Footplate 55 Foot guard 56 Front guard plate 57 Grip 58 Seat belt α Inclination angle (backrest)
θ Steering angle

Claims (2)

  The lower part of the seat (51) of the infant seat (5) is fitted to the head tube (11) of the frame (1) by the mounting tool (50), and is attached to the upper end of the steering column (12) supported by the head tube. The handle (4) has a U-shaped bent hook (41) with a base, and the long hook is bent without touching the lower side of the seat (51) of the infant seat (5). It is possible to steer freely and support the load of the infant and the seat on the head tube of the frame, thereby reducing the steering force of the steering wheel by removing the influence of the load on the steering column and the inertia ratio, and smoothing Infant seat, which improves the stability of the vehicle body by steering and prevents an unexpected fall accident caused by deviation of the load on the seat side when the vehicle body is stopped in the conventional system in which the seat is supported on the handle side Bicycle to be mounted.   The lower part of the seat (51) of the infant seat (5) is fitted to the head tube (11) of the frame (1) by the mounting tool (50), and is attached to the upper end of the steering column (12) supported by the head tube. The handle (4) has a U-shaped bent hook (41) with a base, and the long hook is bent without touching the lower side of the seat (51) of the infant seat (5). When the infant seat (5) is unnecessary, the seat is removed, and the mounting tool (50) has a front heel (60), An infant seat that can be mounted on the rear portion of the cargo bag (6) integrally formed with the rear rod (61) while avoiding contact with the long rod (41) at the steering position and can be freely steered. Bicycle to wear.

Images