JP4297384B1 - Driving stability motorcycle - Google Patents

Abstract

An object of the present invention is to provide a highly stable two-wheeled vehicle for use in a three-seater with two infants on the front and rear.
A vertical member 111a, 111b coupled to the handle bar 113a is provided by providing an infant auxiliary chair 150b above the handle shaft 110 and in a non-movable part at the time of front wheel steering and operating the handle bar 113a. , 112a and the front / rear support member 115a coupled to the longitudinal member, the handle shaft 120 is rotated around the handle shaft,
The front wheel FW is steered from the front of the handle shaft 120.
[Selection] FIG.

Description

  The present invention relates to a two-wheeled vehicle having a front auxiliary chair and / or a front loading platform and having high safety for two-seater riding two infants on the front and rear (hereinafter referred to as “running stable two-wheeled vehicle”).

  Bicycles are lightweight, inexpensive and highly mobile, and are used for shopping and pick-up of kindergarten children by mothers, etc. However, the capacity of bicycles is based on the rules of the Prefectural Public Safety Commission based on the Road Traffic Law from the viewpoint of safety In addition to driving adults, one infant under the age of 6 is allowed on the infant seat. In Tokyo and other countries, it is also permitted to drive with one infant on the back, but if you violate the capacity, you are subject to fines or fees of 20,000 yen or less for violating the Road Code Act.

  However, in reality, many mothers often take three people for pick-up and shopping of kindergarten children, and it is necessary to allow up to two infants to ride together in order to support child rearing in a low birth rate society and for women to advance into society. As a result, the Tokyo Metropolitan Police Department has been examining the situation, and if the bicycle has a stable structure even if it rides three people, it will be considered to allow two people before and after the mother. The agency requests related organizations such as the Bicycle Industry Promotion Association to examine the possibility of spreading three-seater bicycles in terms of material, structure, and price. Development hastened.

Many inventions of a three-wheeled bicycle with two front wheels or rear wheels have already been disclosed. Further, in Patent Document 1 below, there is an auxiliary chair that is installed on a head tube that is a non-movable part above the front wheel handle of a bicycle and that does not affect the steering operation of the steering wheel. It is disclosed.
JP 2007-331729 A

  However, three-wheeled bicycles are heavy, complicated in structure and expensive, unsuitable for narrow roads such as urban areas, and require large parking spaces, which cannot be accommodated by conventional parking spaces. There's a problem.

  Moreover, about the bicycle of the said patent document 1, FIG. 8 is a side view, FIG. 9 (A) is a front view, (B) is a plan view, and (C) is a plan view when the handle is fully operated to the left side. However, the auxiliary chair 300 is composed of an auxiliary chair base 310 and an auxiliary chair mounting base 320 for fixing the auxiliary chair base to the bicycle 200. The front and rear mounting fixing members 325 and 326 provided on the mounting base bottom plate 324 of the auxiliary chair mounting base 320, the band members 328 and 327, Are fixed to the head tube 230 and the main tube 240, which are non-movable parts when operating the handle, by bolts and nuts (not shown).

In addition, a front support plate 323 is provided on the front side and a rear support plate 322 is provided on the rear side between the mounting base upper plate 321 and the mounting base bottom plate 324. When the handle bar 210 is rotated to the left or right, the lower part of the handle bar 210 interferes with the front column plate 323 or the rear column plate 322, and the operation angle is restricted. In FIG. 9C in which the handle is operated to the left side, the lower left side of the handle bar 210 interferes with the rear column plate 322, and the steering angle at this time is about 45 degrees.

  The full operation angle of the conventional bicycle is designed to exceed 90 degrees. However, the bicycle described in Patent Document 1 has a small full operation angle, so that it is only a sense of incongruity for users who are used to the conventional bicycle. Therefore, there is a concern that it lacks stability.

  In addition, in the case of a bicycle in which an infant is placed on an auxiliary chair attached to the handlebar, the moment of inertia around the handlebar shaft becomes large, and the stability is particularly poor at low speeds. The problem of running stability is exactly the same for bicycles loaded with luggage on a luggage bar mounted on a handlebar. In addition, a bicycle in which an auxiliary chair is attached to the front end of the main frame behind the handle shaft is not suitable for a woman wearing a skirt, especially when the knee interferes with the auxiliary chair when the pedal is operated.

The present invention has been made as a result of diligent research and examination in view of such problems, and has a simple structure, and an auxiliary chair for infants and / or a space for a front carrier is provided at the front of the motorcycle. The object is to provide a two-wheeled vehicle (hereinafter referred to as a “running stable two-wheeled vehicle”) that is also used for a three-seater with two infants on the front and rear.

A first invention for achieving the above object is provided above the handle shaft, on the inner side of the rotational movement movement locus of the handlebar in a plan view, and on the non-movable part at the time of front wheel steering, and an auxiliary chair for an infant and / or A two-wheeled vehicle provided with a space for a front carrier, a vertical member having an upper end coupled to a handlebar, a rear member extending from a lower end of the vertical member, a front end coupled to the vertical member, and a rear end A front and rear support member coupled to the handle shaft and / or the front fork, in addition to the front fork, provided in front of the front fork and configured integrally with the vertical member, or an upper end portion of the front and rear support member The front wheel is rotated around the handle shaft from the front of the handle shaft by a steering means including a vertical support member coupled to the vertical member via a lower end and a front axle coupled to a lower end portion, and is steered. Features A running stability motorcycle.
Further, in a second invention according to the first invention, instead of the front and rear support members, a lower portion of the vertical member extends rearward, and a lower end portion thereof is coupled to the handle shaft and / or the front fork, An upper and lower support member is connected to a lower portion of the vertical member.

  The rotation of the front wheel around the handle shaft is not limited to that performed through the vertical member and the support member, and may be performed by rotating the handle shaft directly through the vertical member, or directly through the vertical member. You may carry out by rotating a fork. The front stay may be rotated directly around the handle shaft through the vertical member, or may be performed by a combination thereof.

  The present invention is not limited to so-called bicycles, and is widely applied to two-wheeled vehicles such as electric bicycles, motor-driven bicycles, and motorcycles. The front wheels and / or rear wheels are also applied to so-called W tire cars.

  The vertical member may be solid or hollow, and may be one or more. The support member may be two steps up and down with respect to the handle shaft, or may be one step.

A third aspect of the invention is the traveling stable two-wheeled vehicle according to the first or second aspect , wherein the vertical member is two or three hollow members arranged symmetrically with respect to the central axis of the two-wheeled vehicle. It is.

A fourth invention, in the first or third invention, the front and rear support member is a support plate of the upper and lower stages, the upper and lower handle shaft to the rear end portion of the support plate of the upper and lower stages protrudes from the head tube coupled to both ends of, and a running stability motorcycle front end portion of the support plate of the upper and lower two stages, characterized in that it is coupled to the longitudinal member.

  In order to increase the rigidity of the support plate, it is preferable to provide a front stay that connects the front end portion of the lower support plate and the rotating shaft of the front wheel. Moreover, you may reinforce by adding a plate-shaped material to an oblique member or an outer part between the upper and lower support plates.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the main frame has an S-shape when viewed from the side, and the main frame is formed at a joint portion between the front end portion of the main frame and the head tube. The traveling stable two-wheeled vehicle is characterized in that the axis of the head tube and the axis of the head tube are substantially orthogonal to each other, and the front end portion of the main frame is coupled to the substantially central portion of the head tube in the vertical direction . The main frame may be integrated with the rear tube. Further, the main frame may be plural, and the cross section may be not only a circle but also a corner or a double tube structure.

According to a sixth invention, in any one of the first to fifth inventions, when the two-wheeled vehicle is provided with an auxiliary chair for an infant, the auxiliary chair for the infant is either forward-facing or backward-facing. A traveling stable motorcycle characterized by being arranged. The auxiliary chair should be able to handle both the front and rear directions by changing the fixing member and / or the bottom shape of the auxiliary chair so that it faces backwards when the infant is small and forwards when it is large. Can do.

  In addition, the front loading platform (shopping basket) can be provided so as to be in contact with the seat back when the auxiliary chair is directed forward or backward.

In the first aspect of the present invention, an auxiliary chair for infants and / or a space for a front carrier is provided on the non-movable part above the handlebar shaft and on the inner side of the rotation operation movement locus of the handlebar and in front wheel steering in plan view . A two-wheeled vehicle having a vertical member having an upper end coupled to the handlebar, a rear member extending from a lower end of the vertical member, a front end coupled to the vertical member, and a rear end coupled to the handle shaft and / or the front In addition to the front fork, the front and rear support member coupled to the fork is provided in front of the front fork, and is configured integrally with the vertical member, or the upper end portion is connected to the vertical member via the front and rear support member. A traveling stable two-wheeled vehicle characterized in that the front wheel is rotated around the handle shaft from the front of the handle shaft and steered by a steering means including a vertical support member coupled to a lower end of the front axle. And According to a second invention, in the first invention, instead of the front and rear support members, a lower portion of the vertical member extends rearward, and a lower end portion thereof is coupled to the handle shaft and / or the front fork, and Since the upper part of the support member is connected to the lower part of the vertical member, it is a traveling stable two-wheeled vehicle. Therefore, the rotation of the handle increases the moment of inertia around the handle shaft due to the auxiliary chair (including infants) and luggage. Since the full operation angle is the same as that of a conventional motorcycle, the stability is excellent even at low speeds.

  Also, since the front wheel trail related to the position of the left and right grips with respect to the saddle, the position / tilt angle of the handlebar shaft, and the restoring force of the handle operation is the same as that of a conventional motorcycle, the driving and operating feeling is almost the same as that of a conventional motorcycle can get.

  In addition, the overall size (full length, full height, full width) and weight are almost the same as conventional motorcycles, and handling and parking space during parking are the same as conventional motorcycles. It can be adapted to the size (length 190cm, width 60cm).

  Furthermore, since the auxiliary chair and / or the front loading platform are installed above the handle shaft, the knee does not interfere with the auxiliary chair or the front loading platform when getting on and off and pedaling, which is convenient for women wearing a skirt. is there.

  Further, in addition to the auxiliary chair, by providing a front carrier so as to be in contact with the seat back of the auxiliary chair, it is possible to carry luggage in addition to carrying two infants in front and rear.

  The present invention is not limited to so-called bicycles, and is widely applied to two-wheeled vehicles such as electric bicycles, motor-driven bicycles, and motorcycles. The front wheels and / or rear wheels are also applied to so-called W tire cars.

  If the size of the tire is reduced, the height of the center of gravity can be lowered, so that the stability is further improved.

A third aspect of the invention is the traveling stable two-wheeled vehicle according to the first or second aspect , wherein the vertical member is two or three hollow members arranged symmetrically with respect to the central axis of the two-wheeled vehicle. Therefore, it is easy to ensure the strength and rigidity of the vertical members. By arranging two or three vertical members symmetrically, the design balance is good, and for rain protection and awning sheets for infants. There is an effect that it can be made into a skeletal member when installing a hood.

A fourth invention, in the first or third invention, the front and rear support member is a support plate of the upper and lower stages, the upper and lower handle shaft to the rear end portion of the support plate of the upper and lower stages protrudes from the head tube coupled to both ends of, and from the front end of the support plate of the upper and lower stages are running stability motorcycle, characterized in that it is coupled to the longitudinal member, and simplify the handle around the operating structure, High strength and rigidity can be achieved. In addition, by making the upper support plate T-shaped in plan view, it is possible to easily avoid interference between the upper support plate and the fixing member of the auxiliary chair or the front carrier during the operation of the handle, and the full operation angle of the handle The angle can be set to 90 degrees or more like a conventional motorcycle. Further, if an oblique member or a plate-like material is added between the upper and lower support plates, the strength and rigidity of the support plate portion can be improved and the front stay can be omitted.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the main frame has an S-shape when viewed from the side, and the main frame is formed at a joint portion between the front end portion of the main frame and the head tube. Since the axis of the head tube and the axis of the head tube are substantially perpendicular to each other, and the front end of the main frame is coupled to the substantially central portion of the head tube in the vertical direction , The frame and the head tube are easily welded together, and the upper and lower support plates do not interfere with the main frame when the steering wheel is operated. Located in the area, it is particularly easy for women to get on and off.

According to a sixth invention, in any one of the first to fifth inventions, when the two-wheeled vehicle is provided with an auxiliary chair for an infant, the auxiliary chair for the infant is either forward-facing or backward-facing. Because it is a traveling stable motorcycle characterized by being arranged, by changing the bottom shape of the fixing member and / or the auxiliary chair, when the infant is small, it faces backwards facing the mother, and when the infant becomes large, It can be selected appropriately according to the growth process of the infant, such as good prospect.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, known portions, portions not directly related to the gist of the invention, and portions that are warped and become unclear due to description are omitted or simplified.

The embodiment of the present invention is characterized by a handle portion of a front wheel with respect to a conventional two-wheeled vehicle, and a rear half of the two-wheeled vehicle such as a saddle, a pedal, and a rear wheel is the same as a conventional two-wheeled vehicle. In addition, the grip and front wheel position with respect to the saddle position, and the position and inclination angle of the handle shaft are the same, and the handle portion of the front wheel will be described.
FIG. 1 is a side view of a traveling stable motorcycle according to a first embodiment of the present invention. In the first embodiment, the handle bar 113 is connected to the handle shaft 120 to which the front fork 117 is fixed via the vertical members 111 and 112 and the upper and lower support plates 114 and 115. When rotating left and right, the front wheels FW are steered through the vertical members 111 and 112, the upper and lower support plates 114 and 115, and the front fork 117 (including the front stay 118).

  2 is an explanatory view of the handle portion of FIG. 1, (A) is a view as viewed from the arrow X in FIG. 1, (B) is a side view of (A), (C) is a view as viewed from the arrow Y in FIG. FIG. 4D is a view as viewed in the direction of arrow Z in FIG. 1 (showing a fixing member of the auxiliary chair). Note that (C) also serves as an explanatory diagram of the gap between the handlebar and the auxiliary chair (including an infant) when the handle is operated 90 degrees to the left.

  3 is a detailed explanatory view of the head tube portion of FIG. 1, in which (A) is a longitudinal sectional view, (B) is a rear view, and (C) is a plan view of the upper support plate (viewed from Y in FIG. 1). , (D) is a plan view of the base plate (viewed from the arrow Y in FIG. 1), and (E) is a plan view of the lower support plate (viewed from the arrow Y in FIG. 1). Note that a line GG in FIG. B indicates a cross-sectional position in FIG.

  Hereinafter, each component will be described in detail with reference to FIGS. The handle bar 113 is made of a steel pipe, and the central portion extends substantially linearly in the left-right direction and is bent rearward and downward at both sides, and grips 1134 and 1135 are provided at both ends.

  The vertical members 111 and 112 are made of steel pipes, and are bent back at the upper part of the upper and lower centers and bent back at the lower part of the center.

  The upper support plate 114 is a press-molded product made of a steel plate for connecting and connecting the vertical members 111 and 112 and the handle shaft 120 to maintain a predetermined front-rear interval between the handle shaft 120 and the vertical members 111 and 112. It is a support member. It has a T-shape in plan view and the front left and right ends are bent downward. The vertical members 111 and 112 are inserted into the holes 1142 provided in the front half, and the vertical members 111 and 112 are welded at the bent back portion slightly below the center of the vertical members 111 and 112. It is fixed to the shaft 120.

  The lower support plate 115 is a press-formed product made of a steel plate, and is a support member that forms a pair with the upper support plate 114 and maintains a predetermined front-rear distance between the handle shaft 120 and the vertical members 111 and 112. A rectangular shape in plan view is formed, and the left and right ends are bent downward, and the rear end is fixed to the handle shaft. A front fork 117 is fillet welded to the lower support plate 115 by aligning the center of the hole 1171 with the center of the hole 1151 of the lower support plate.

  116 is a steel plate base plate welded to the lower ends of the vertical members 111 and 112 to which the upper support plate 114 is welded. The lower support plate 115 and the lower ends of the vertical members 111 and 112 are connected to each other. It is a member for facilitating. The lower end portions of the vertical members 111 and 112 are inserted and welded into a hole 1162 provided at a substantially central portion in the front-rear direction.

  The upper and lower ends of the vertical members 111 and 112 can be adjusted to the left and right linear portions 1131 of the handle bar 113 by shaft-attached clamp members 1132 and 1133, and the handle bar 113 can be adjusted by the band members 1111 and 1112. The height is fixed to be adjustable.

  A steel tube head tube 130 has a handle shaft made of round steel inserted therein, and ball bearings 131 and 132 are inserted between the head tube 130 and the handle shaft from both upper and lower ends of the head tube 130, respectively. The shaft 120 is rotatably supported by the head tube 130. The main frame 140 is welded to the substantially central portion of the head tube 130 so that the axes of the main frames 140 are orthogonal to each other.

  Next, the upper welded joint which is a joined body of the vertical members 111 and 112, the upper support member 114 and the base plate 116, and the lower welded joint which is a joined body of the front fork 117 and the lower support member are attached to the handle shaft 120. The assembly procedure will be described.

  First, the small diameter portion 123 at the upper end portion of the handle shaft 120 is inserted into the hole 1141 at the rear end portion of the upper support plate 114 of the upper welded joint, and is tightened with the nut 121 via the spring washer 122. The support plate 114 is fixed.

Next, the small diameter portion 124 at the lower end of the handle shaft 120 is attached to the lower support plate 11 of the lower welded joint.
5 is inserted into the hole 1151 (including 1171) at the rear end portion, aligned so that the front edge of the base plate 116 and the front edge of the lower support plate 115 are parallel, and through the spring washer 122,
The nut 121 to temporary tightening.

  Next, the bolts and nuts 1164 are fastened and fixed by the holes 1161 at the rear end of the base plate 116 of the upper welded joint and the holes 1153 of the lower support plate, and the nut 121 at the lower end of the handlebar shaft 120 is temporarily tightened. Tighten. Then, the base plate 116 and the lower support plate 115 are fastened and fixed by the holes 1163 at the front end, the holes 1154 in the lower support plate, the holes 1181 in the front stay 118, and the bolts and nuts 1165.

  Tightening and fixing by nuts (not shown) between the lower end of the front fork 117 and the rotating shaft of the front wheel FW, and the lower end of the front stay 118 and the rotating shaft of the front wheel FW are fixed to the lower support plate 115 of the front stay 118. First, the bolts and nuts 1165 are fixed temporarily. After the nuts (not shown), the lower ends of the front forks 117 and the lower ends of the front stays 118 are fixed to the front shafts of the front wheels FW (fixed together) and then tightened. Thus, an accurate position with no positional deviation of the front stay 118 with respect to the lower support plate 115 is secured. However, the front stay 118 may be previously positioned by welding to the lower support plate 115.

  The reason for fixing the lower end of the handle shaft 120 with the nut 121 first is to temporarily fix the lower support plate 115 and the base plate 116 easily.

  By connecting the lower support plate 115 and the rotation shaft of the front wheel FW by the front stay 118, the support rigidity of the upper and lower support plates is sufficiently ensured.

  The upper and lower small-diameter portions 123 and 124 of the handle shaft 120 are round in cross section, and the holes 1141 and 1151 in the upper and lower support plates 114 and 115 are also round. However, serrations and corners are advantageous in preventing loosening. Further, if a plate-like material is added between the upper and lower support plates, the strength and rigidity of the support plate portion can be improved and the front stay can be omitted.

  Next, the auxiliary chair will be described. In FIG. 1, reference numeral 150 denotes an auxiliary chair facing backward, and an infant C is seated with a seat belt 151 facing backward in the center. Reference numeral 153 denotes a fixing member for the auxiliary chair, a fixed base 1531 in which two press-formed products having a U-shaped cross section in the Y direction are joined and welded from the left and right, and a receiving member that is welded and fixed to the upper side of the fixed base 1531 1532. A flange portion is provided below the fixed base 1531, and this flange portion is fastened and fixed to a fixing plate 141 welded to the main frame 140 with bolts and nuts 1533.

  The lower surface of the auxiliary chair 150 is fastened and fixed to the receiving member 1532 with a butterfly screw 1534. A point Q in FIG. 2C indicates the attachment center of the butterfly screw 1534.

  The fixing member 153 is fixed to the fixing plate 141 that is welded to the main frame by bolts and nuts 1533, and the fixing member 153 is directly fixed to the main frame 140 by using a U-shaped clamp member and bolts and nuts. Also good. Further, the illustrated auxiliary chair 150 can be a shoulder belt or can have a higher holdability.

  FIG. 2C illustrates a state in which the handle bar 113 is operated 90 degrees to the left. The movable parts such as the handle bar 113 and the vertical members 111 and 112 are positioned forward with respect to the handle shaft 120, and the movable parts move around the handle shaft 120 even if the handle is operated from the straight traveling state to the maximum driving operation angle. It rotates and does not interfere with the auxiliary chair 150 or the infant C.

  Further, since the distal end portion of the main frame 140 is welded to the substantially central portion of the head tube 130 so that the axes thereof are substantially orthogonal to each other, the main frame 140 is included in the rotation trajectory of the upper and lower support members 114 and 115. The upper and lower support members 114 and 115 do not interfere with the front end portion of the main frame 140.

  The auxiliary chair 150 is installed above the handle shaft 120, the fixing member 153 has a predetermined gap in parallel with the handle shaft 120, and the upper support plate 114 has a T-shape as viewed in the Y direction. Therefore, the upper and lower support plates 114 and 115 do not interfere with the auxiliary chair 150 or the fixing member 153.

  Further, even if the infant C grows and the head becomes higher than the position shown in the figure, the head has a predetermined gap with the handlebar 113 as viewed from the Y direction. There is no interference.

  Further, since the auxiliary chair 150 is located above the handle shaft 120, the knee does not interfere with the auxiliary chair 150 when the pedal is operated.

  Further, if the bending shapes of the vertical members 111 and 112 and the handle bar 113 are further increased, the gap between the vertical members 111 and 112 and the handle bar 113 and the auxiliary chair 150 is not only straight traveling but also at the time of full operation of 90 degrees or more. Also, the position of the auxiliary chair 150 can be moved forward.

  In this embodiment, since the front wheel is steered around the handle shaft from the front of the handle shaft, the handle operation does not increase the moment of inertia around the handle shaft due to an auxiliary chair (including infants) or luggage. Since the full operation angle is 90 degrees or more as in the conventional motorcycle, the stability is excellent even at low speeds.

  Also, because the front wheel trail related to the position of the left and right grips with respect to the saddle, the position / tilt angle of the handlebar shaft, and the restoring force of the handle operation is the same as that of a conventional motorcycle, the feeling of driving / operating is substantially the same It is. In addition, the overall size (full length, full height, full width) and weight are almost the same as conventional motorcycles, and handling and parking space during parking are the same as conventional motorcycles. It can be adapted to the size (length 190cm, width 60cm).

  If the size of the tire is reduced, the height of the center of gravity can be lowered, so that the stability is further improved.

  In the present embodiment, the front wheel steering is performed by rotating the front wheel around the handle shaft 120 via the vertical members 111 and 112 and the upper and lower support plates 114 and 115, but is not limited thereto. The handle shaft 120 or the front fork 117 may be rotated around the handle shaft 120 directly from the vertical members 111 and 112.

  In addition, the front stay 118 is separated from the vertical members 111 and 112, but may be integrated. The vertical member may be one or a plurality of vertical members.

  In addition, the main frame 140 is a single frame having an S-shape when viewed from the side, but a plurality of frames may be used, and the cross section may be not only a circle but also a corner or a double tube structure.

  Further, the main frame and the rear tube 170 can be integrated into a continuous product.

  4A and 4B are explanatory views when a hood is attached to the traveling stable two-wheeled vehicle according to the first embodiment of the present invention, in which FIG. 4A is a side view, FIG. 4B is a view taken along an arrow X in FIG. It is a Y arrow line view of FIG.

  In FIG. 4, a chain line of the handle portion is a hood attached to the handle portion for avoiding rain or for awning. This hood has a handlebar 113 and two vertical members 111 and 112 as main skeleton members, a horizontal bar 191, a front and rear bar 192, a vertical bar 193, and left and right diagonal bars 194 as auxiliary members. A resin sheet is coated. The left and right ends of the horizontal bar 191 are screwed to a clamp 1911 fixed to the handle bar 113. The rear end of the front / rear bar 192 is screwed to the horizontal bar 191, the front end of the front / rear bar 192 is screwed to a clamp 1922 fixed to the handlebar 113, and the upper end of the vertical bar 193 is screwed to the clamp 1922. ing.

  The lower end of the vertical bar 193 is screwed using a tapping hole 1143 provided at the front end of the upper support plate 114. The upper end of the swash bar 194 is screwed to the clamp 1911 and the lower end is screwed using a tapping hole 1144 in the flange portion at the side end of the upper support plate 114.

  It is preferable that the horizontal bar 191 protrudes rearward to widen the cover area of the infant C within a range that does not hinder driving operation. Further, the front and rear members 192 and the vertical members 193 may be a continuous integrated product, and the number thereof is arbitrary.

  The handle bar 113 of the hood 190, the vertical members 111 and 112, the horizontal bar 191, the front and rear bar 192, the vertical bar 193, and the slant bar 194 can be fixed by using Velcro or a string with a button. It becomes easy, and it is also easy to add a fixing point to main skeleton members such as the handle bar 113 and auxiliary members such as the horizontal bar 191 in preparation for wind and rain.

  The vinyl sheet used as the hood should be transparent to avoid rain, and dark (eg, gray) as the awning to make the infant's field of view transparent. When the wind and rain are strong, another plastic sheet, for example, may be used at the infant's feet.

  FIG. 5 is an explanatory diagram of a second embodiment of the present invention in which the auxiliary chair is facing forward. The second embodiment is different from the first embodiment in that the shape of the fixing member 153 (including the receiving member 1532a) is changed and the auxiliary chair is attached to the front. The first embodiment except the fixing member 153 is the first embodiment. This is the same as the embodiment.

  The movable part such as the handlebar does not interfere with the auxiliary chair 150a, the main frame, etc., and it is easy to get on and off, and the knee does not interfere with the auxiliary chair 150a when the pedal is operated. The moment of inertia around the wheel does not increase, and the full operating angle is 90 degrees or more as in the case of a conventional motorcycle. Therefore, it has excellent stability even at low speeds, the position of the left and right grips relative to the saddle, and the position of the handle shaft.・ Because the front wheel trail related to the inclination angle and the restoring force of the steering wheel operation is the same as a conventional two-wheeled vehicle, it is possible to obtain almost the same driving and operating feeling as a conventional two-wheeled vehicle, and the overall size (full length, full height, full width) ) The weight of the bicycle is almost the same as that of a conventional motorcycle, and the handling and parking space during parking is the same as that of a conventional motorcycle. 190 cm, can be adapted to the width 60cm).

  When the infant is small, the infant and the driver are more likely to feel safe to face the driver (for example, mother) facing backwards. If the infant grows larger, it can be adapted to the growth process of the infant as a forward facing with a sense of openness.

  Auxiliary chair 150a is not limited to the one shown in the figure, but in addition to the changes necessary to adapt to the growth of the infant's body, it should have a shoulder-type belt, a higher holdability, and an infant's hand grip. You can also.

  Further, if the positions of the handlebar 113 and the vertical members 111 and 112 are moved further forward while the positions of the hand grips 1134 and 1135 are left as they are, the position of the auxiliary chair 150a is moved forward without changing the feeling of driving operation. Can do.

  FIG. 6 is an explanatory diagram of a traveling stable motorcycle provided with a front carrier according to a third embodiment of the present invention.

  In the present embodiment, the auxiliary chair of the first or second embodiment provided above the handle shaft is replaced with the front loading platform B, and the shape of the fixing member of the auxiliary chair is fixed to the front loading platform 153b. In this case, it is changed to (containing member 1532b), and a bowl-shaped front cargo bed B is installed at a position substantially the same as the installation position of the auxiliary chair. Others are the same as those in the first or second embodiment.

  The movable parts such as the handlebar do not interfere with the front carrier B or the main frame, and the knees do not interfere with the front carrier when pedaling is good, and the front axle (including luggage) rotates around the handle shaft. The moment of inertia is not increased, and the full operating angle is 90 degrees or more as in the case of conventional motorcycles. Therefore, it has excellent stability even at low speeds, the position of the left and right grips relative to the saddle, the position of the handle shaft Since the front wheel trail related to the inclination angle and the restoring force of the steering wheel operation is the same as a conventional two-wheeled vehicle, the same feeling of driving and operation as a conventional two-wheeled vehicle can be obtained, the overall size (full length, full height, full width), The weight is almost the same as that of a conventional motorcycle, the handling and parking space during parking is the same as that of a conventional motorcycle, and the size of a normal bicycle (length: 190 cm, width: 60 cm).

  In particular, when transporting a heavy object divided into front and rear cargo beds, the load is transported by placing it only on the rear cargo bed, or when dividing and transporting the cargo on the rear cargo bed and the luggage bar attached to the handlebar 113. High running stability.

  Also, if a hood is attached, transported items can be protected from rain and solar radiation.

  7A and 7B are explanatory diagrams of a traveling stable two-wheeled vehicle provided with an auxiliary chair and a front loading platform according to a fourth embodiment of the present invention, where FIG. 7A is a side view, FIG. C) is a view on arrow Y in FIG.

  The fourth embodiment is a traveling stable two-wheeled vehicle in which the direction of the auxiliary chair according to the second embodiment is forward, and a front loading platform (shopping basket) is provided at the rear of the auxiliary chair.

  Hereinafter, differences from the second embodiment will be described with reference to FIG. In FIG. 7, in order to install the front loading platform Ba in addition to the auxiliary chair 150b, the position of the vertical member is moved forward, the upper support plate 114 is deleted, and the lower support plate 115a having a substantially trapezoidal shape is provided. Yes. Furthermore, in order to ensure the strength and rigidity of the vertical member, the vertical member 111b is added on the left and right symmetry lines to form three vertical members, the left and right grip positions are the same as in the second embodiment, and the handle lever 113a Longitudinal dimensions are lengthened.

  Further, in order to reinforce the lower support member 115a, the front stay 118a is reinforced to be an indispensable constituent member.

  The fixing members are two fixing members 153c and 153d extending upward from the upper surface of the front end of the main frame and the front surface of the head tube. The upper surfaces of the fixing members before and after the fixing member are connected by the receiving member 1532c, A front-facing auxiliary chair 150b is provided, and a front loading platform Ba is provided at the rear of the auxiliary chair.

  In the fourth embodiment (not shown), a front loading platform is provided at the front part of the receiving member, and an auxiliary chair facing backward is provided at the rear part in the fourth embodiment. Others are the same as the fourth embodiment.

  The fourth and fifth embodiments are useful for attending and shopping for two infants because they are provided for a three-seater ride with infants on the front and back and further provided with a front loading platform.

  In both the fourth and fifth embodiments, the auxiliary chair and the front loading platform are provided on the front and back above the handle shaft, but the handle bar is extended forward and backward, and the vertical member is moved forward. The movable part of the arm does not interfere with the auxiliary chair, main frame, etc., and the knees do not interfere with the auxiliary chair or the front bed when pedaling is good. The moment of inertia does not increase and the full operating angle is 90 degrees or more, as with conventional motorcycles, so it has excellent stability even at low speeds, the position of the left and right grips relative to the saddle, and the position and inclination of the handle shaft Since the front wheel trail related to the restoring force of corner and handle operation is the same as that of a conventional two-wheeled vehicle, almost the same driving feeling as that of a conventional two-wheeled vehicle can be obtained. (Height / Wide width) and weight are almost the same as a conventional two-wheeled vehicle, and the handling and parking space when parking is the same as a conventional two-wheeled vehicle, so that it fits the current regular bicycle (length 190cm, width 60cm) be able to.

  The first to fifth embodiments are not limited to so-called bicycles, and are widely applied to two-wheeled vehicles such as electric bicycles, motor-driven bicycles, and motorcycles. The front wheels and / or rear wheels are also applied to so-called W tire cars.

1 is a side view of a traveling stable motorcycle according to a first embodiment of the present invention. It is explanatory drawing of the handle | steering-wheel part of FIG. 1, (A) is a X arrow view of FIG. 1, (B) is a side view, (C) is a Y arrow view of FIG. 1, (D) is Z of FIG. It is an arrow view (fixing member part of an auxiliary chair). FIG. 2 is a detailed explanatory view of the head tube portion of FIG. 1, (A) is a longitudinal sectional view of the head tube portion, (B) is a back view of the head tube portion, and (C) is a plan view of the upper support plate (viewed in the direction of arrow Y). (D) is a plan view of the base plate (viewed from the arrow Y), and (E) is a plan view of the lower support plate (viewed from the arrow Y). It is explanatory drawing when a top is attached to the traveling stable two-wheeled vehicle which concerns on 1st Embodiment of this invention, (A) is a side view, (B) is a X arrow directional view of FIG. A, (C) is FIG. FIG. It is explanatory drawing of the driving | running | working stability two-wheeled vehicle which provided the auxiliary chair facing forward concerning 2nd Embodiment of this invention. It is explanatory drawing of the traveling stable two-wheeled vehicle provided with the front loading platform which concerns on 3rd Embodiment of this invention. It is explanatory drawing of the driving | running | working stability two-wheeled vehicle which provided the auxiliary chair and front loading platform which concern on 4th Embodiment of this invention, (A) is a side view, (B) is a X arrow directional view of FIG. A, (C) is a figure. It is a Y arrow line view of A. It is a side view of the two-wheeled vehicle equipped with the auxiliary chair which concerns on a prior art example. (A) of the two-wheeled vehicle shown in FIG. 8 is a front view, (B) is a plan view, and (C) is a plan view when the steering wheel is fully steered to the left.

Explanation of symbols

100, 200 ... Two-wheeled vehicle 110, 110a, 210 ... Handle member 111, 112, 111a, 111b, 112a ... Vertical member
1111, 1112 ... band member 113,113a ··· handle bar
1131 ... straight line part
1132, 1133 ... Clamp member (with shaft)
1134, 1135 ... grip 114 ... support plate ( front / rear support member), ( upper part )
1141 ... Hole (handle shaft insertion)
1142 ... hole (for vertical member insertion)
1143 ... Tapping hole (for fixing the vertical bar)
1144 ... Tapping hole (for fixing swash bar)
115, 115a ... support plate ( front / rear support member), (lower part)
1151 ... Hole (handle shaft insertion)
1152 ... hole (for inserting vertical members)
1153: Hole (for fixing the base plate)
1154 ... hole (for fixing base plate and front stay)
116 ... Base plate
1161 .. hole (for fixing)
1162 ... hole (vertical member insertion)
1163... Hole (for fastening with fastening)
1164, 1165 ... bolts and nuts 117, 217 ... front fork
1171 ... Hole (handle shaft insertion)
118, 118a ... Front stay ( up and down support member )
1181 ... Hole 120, 220 ... Handle shaft 121 ... Nut 122 ... Spring washer 123, 124 ... Small diameter portion 130, 230 ... Head tube 131, 132 ... Bearing (ball bearing) )
140, 240 ... main frame 141 ... fixed plate 150, 150a, 150b ... auxiliary chair 151, 151a ... seat belt 152, 152a, 152b ... seat frame 153, 153a, 153b, 153c 153d ・ ・ Fixing member
1531 ... Fixed base
1532, 1532a, 1532b, 1532c ... receiving member 1533 ... bolts and nuts
1534 ... Butterfly screw 160 ... Saddle
161 ... saddle post
162 ... Pedal 170 ... Rear tube 180 ... Roller bed 181 ... Rear seat 182 ... Rear fork 183 ... Roller bed stay 184 ... Chen stay
185 ... Chen Cover 190 ... Top (Avoids rain, awning)
191 ... Horizontal bar
1911: Clamp 192: Front / rear bar
1921 ... Clamp (front)
1922: Clamp (rear)
193 ... Vertical bar
1931 ... Screw 194 ... Slanting bar
1941 ... Screw C ... Infant P ... Driving / operator (mother)
Q ・ ・ ・ Butterfly screw fixing point B 、 Ba ・ ・ ・ Preloader (籠)
FW ・ ・ ・ Front wheel RW ・ ・ ・ Rear wheel

Claims (6)

A two-wheeled vehicle provided with an auxiliary chair for infants and / or a space for a front carrier on a non-movable part at the time of steering the front wheel inside the rotation operation movement locus of the handlebar in a plan view above the handle shaft,
A vertical member whose upper end is coupled to the handlebar;
A front and rear support member that extends rearward from the lower end of the vertical member, has a front end coupled to the vertical member, and a rear end coupled to the handle shaft and / or the front fork;
In addition to the front fork, it is provided in front of the front fork and is configured integrally with the vertical member, or the upper end is coupled to the vertical member via the front and rear support members, and the front axle is coupled to the lower end. By the steering means consisting of the upper and lower support members,
A traveling stable two-wheeled vehicle, wherein the front wheel is turned from the front of the handle shaft around the handle shaft and steered. In place of the front and rear support members, the lower part of the vertical member extends rearward, and the lower end thereof is coupled to the handle shaft and / or the front fork,
The traveling stable two-wheeled vehicle according to claim 1, wherein an upper portion of the vertical support member is coupled to a lower portion of the vertical member.   The traveling stable two-wheeled vehicle according to claim 1 or 2, wherein the vertical member is two or three hollow members arranged symmetrically with respect to a central axis of the two-wheeled vehicle.   The front and rear support members are composed of upper and lower two-stage support plates, and the rear end portions of the upper and lower two-stage support plates are coupled to the upper and lower ends of the handle shaft protruding from the head tube, and the upper and lower two-stage support plates The traveling stable two-wheeled vehicle according to claim 1, wherein a front end portion of the vehicle is coupled to the vertical member.   The main frame has an S-shape when viewed from the side, and the axis of the main frame and the axis of the head tube are substantially orthogonal to each other at the connecting portion between the tip of the main frame and the head tube, The traveling stable motorcycle according to any one of claims 1 to 4, wherein a front end portion is coupled to a substantially central portion of the head tube in a vertical direction. If the motorcycle is provided with a booster seat for infants, the auxiliary chair for the infant, according to any one of claims 1 to 5, characterized in that it is located either forward facing or rearward facing Traveling stability motorcycle.

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