JP2009280209A - Bicycle stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bicycle allowing a rider or the like to load/unload a child or a cargo on/from the bicycle while easily supporting a bicycle body by oneself. <P>SOLUTION: The bicycle has a stay part arranged turnably in a vicinity of a hub shaft of a front wheel of the bicycle, and a ground contact part extending from the stay part. A pair of leg stands are provided, which are capable of changing the attitude between a parking attitude in which the stay part extends substantially vertical-downwardly from a center of turn of the stay part, and the ground contact part is brought into contact with the ground to support the bicycle, and a releasing attitude in which the stay part extends substantially horizontal-backwardly from the center of turn of the stay part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bicycle including a both-leg stand for allowing the bicycle to stand on its own when parked.

  In the conventional bicycle, a stand for allowing the bicycle to stand independently when parked is attached to the rear wheel side.

  In general, when a child or a luggage is loaded or unloaded, it is preferable to support the vehicle body with a handle or the like so that the vehicle body does not wobble.

  However, with conventional bicycles, it is easy to load and unload children and luggage while supporting the car body with a total of two people: a child, a person who loads and unloads luggage, and a person who supports the car body. There was a problem that it was difficult to perform alone.

  The present invention has been made in order to solve the above-described problems, and provides a bicycle in which a driver or the like can easily carry a child or a luggage on and off while supporting a vehicle body by one person. With the goal.

  A bicycle according to the present invention is a bicycle provided with a two-leg stand having a support portion rotatably disposed near a hub axle of a front wheel of the bicycle, and a grounding portion extending from the support portion. The two-leg stand includes a parking posture that supports the bicycle when the support column extends substantially vertically downward from the center of rotation of the support column and the grounding unit contacts the ground, and the support column supports the center of rotation of the support column. The posture can be changed between a release posture extending substantially horizontally from the rear.

  The grounding portion includes a front grounding portion that is grounded at a front position relative to a vertical lower position of a rotation center of the support column and a vertical lower position of the rotation center of the support column in a parking posture state of the both leg stands. And a rear grounding portion for grounding at a rear position, and a distance from the rear grounding portion to a vertically lower position of a rotation center of the support column is vertically lower than a rotation center of the support column. It is preferably longer than the distance to the position.

  A bicycle including a bicycle child seat is also included in the spirit of the present invention.

  It is preferable that the bicycle child seat is attached in the vicinity of the top of the handlebar stem of the bicycle so as to be sandwiched from the left and right by the rising portion of the handlebar of the bicycle.

  According to the bicycle according to the present invention, the bicycle is provided with a both-leg stand having a column portion rotatably disposed near the hub axle of the front wheel of the bicycle and a grounding portion extending from the column portion. The both-leg stand has a bicycle parking posture in which the column portion extends substantially vertically downward from the center of rotation of the column portion and the grounding portion is grounded to support the bicycle, and the column portion is rotated by the column portion. Since the posture can be changed between the release posture that extends substantially horizontally rearward from the center of movement, the vehicle body does not fluctuate when parking, etc., and the driver can easily put children and luggage on and off alone. Further, there is an effect that it is possible to operate in a posture that does not require excessive force and is not excessive in order to change from the released posture state to the parking posture state.

  In addition, in the bicycle, the grounding unit is configured to ground at a position forward of a vertically lower position of the pivot center of the support column when the two-leg stand is in a parking posture, and the rotation of the support column. A rear grounding portion for grounding at a rear position rather than a vertical lower position of the center, and a distance from the rear grounding portion to a vertical lower position of the center of rotation of the column portion is from the front ground portion to the column portion. Since it is longer than the distance to the vertically lower position of the center of rotation, there is an effect that the force required to change from the released posture state to the parking posture state can be reduced.

  Further, in the bicycle, the bicycle child seat is attached near the top of the handlebar stem of the bicycle so as to be sandwiched from the left and right by the rising portion of the handlebar of the bicycle. There is an effect that the fluctuation of the front wheel of the bicycle can be reduced by approaching the rotation axis.

It is a perspective view which shows the bicycle which attached the child seat for bicycles by the reference example 1 of this invention. It is a perspective view in which the ladder part of the bicycle child seat by the reference example 1 of this invention shows a suspension posture. It is a perspective view which shows the obstruction | occlusion attitude | position of the ladder part of the child seat for bicycles by the reference example 1 of this invention. It is a perspective view for demonstrating the attitude | position change between the suspension attitude | position of the ladder part of the bicycle child seat by the reference example 1 of this invention, and a closure attitude | position. It is a perspective view which shows the suppression attitude | position of the safety bar of the child seat for bicycles by the reference example 1 of this invention. It is a perspective view which shows the open posture of the safety bar of the bicycle child seat by the reference example 1 of this invention. (A) It is a top view of the ratchet mechanism of the safety bar of the bicycle child seat by the reference example 1 of this invention. (B) It is left side perspective drawing of the ratchet mechanism of the safety bar of the bicycle child seat by the reference example 1 of this invention. (C) It is left side perspective drawing which shows the relationship between the gearwheel and a nail | claw body at the time of locking of the ratchet mechanism of the safety bar of the bicycle child seat by the reference example 1 of this invention. It is a side view which shows the bicycle which attached the seat part of the child seat for bicycles by the reference example 2 of this invention with the front riding posture. It is a side view which shows the bicycle which attached the seat part of the child seat for bicycles by the reference example 2 of this invention with the facing riding posture. It is a perspective view which shows the front riding posture of the seat part of the child seat for bicycles by the reference example 2 of this invention. It is a perspective view which shows the facing riding posture of the seat part of the child seat for bicycles by the reference example 2 of this invention. It is a side view which shows the front side of the bicycle by Embodiment 1 of this invention. It is a perspective view which shows the bicycle parking position of the both-legs stand of the bicycle by Embodiment 1 of this invention. It is a perspective view which shows the cancellation | release attitude | position of the both-leg stand of the bicycle by Embodiment 1 of this invention.

  Hereinafter, an embodiment of the present invention will be described, but the present invention is not necessarily limited to this embodiment.

(Reference Example 1)
FIG. 1 is a perspective view showing a bicycle equipped with a bicycle child seat 100 according to Reference Example 1 of the present invention.

  As shown in FIG. 1, the bicycle child seat 100 according to the first reference example includes a seat portion 1, a footrest portion 2, a ladder portion 3, and a safety bar 4. In FIG. 1, the seat portion 1, the footrest portion 2, and the safety bar 4 made of a rod-shaped member are covered with a cover such as a cloth.

  The seat portion 1 has a basket shape having a seat surface, a side surface, and a backrest, and is attached in the vicinity of the top portion of the handle stem 5 so as to be sandwiched by the rising portion 6 of the handle bar from the left and right. Further, the seat part 1 is provided with a grip rod 9 extending vertically on the front side of the left side surface, and further, an upper part of the backrest for fixing the torso of the child to the seat part 1 when the child is seated. A three-point seat belt 7 is attached from the left and right two points to the center of the front side of the seating surface.

  The footrest portion 2 has a substantially box shape in which the upper surface and the left side surface are opened, and is formed deeper than the seat portion 1 in front of the seat portion 1. Details thereof will be described later.

  The ladder portion 3 has a ladder shape, and is suspended substantially vertically downward from the bottom of the left side surface of the footrest portion 2. Details thereof will be described later.

  The shape of the safety bar 4 is substantially U-shaped, and is pivotally supported at both ends of the upper side of the front surface of the footrest portion 2. Details thereof will be described later.

  FIG. 2 is a perspective view showing a suspended posture of the ladder portion 3 according to Reference Example 1 of the present invention, and FIG. 3 is a perspective view showing a closed posture of the ladder portion 3 according to Reference Example 1 of the present invention. 4 is a perspective view for explaining a posture change between the suspended posture and the closed posture of the ladder portion 3 according to Reference Example 1 of the present invention. FIG. In addition, in FIG. 2 thru | or 4, the state where the footrest part 2 is not covered with the cover is shown for description.

  As shown in FIGS. 2 to 4, the footrest portion 2 includes a first hook portion 10 extending in a bar shape in the front-rear direction of the bottom side of the left side surface, and the first hook portion 10 is perpendicular to the first hook portion 10. In other words, a bar-shaped second latching portion 11 extending in the vertical direction is formed, and a gripping bar 8 extending vertically to the front side of the left side surface is cylindrical along the vicinity of the bottom of the front surface. The ladder bearing portion 12 is provided with a lock mechanism 13 in front of the second latching portion 11.

  The ladder portion 3 includes a plurality of step portions 18 that are substantially parallel to each other, and a first beam member 16 and a second beam member 17 that sandwich each step portion 18, and one end of the first beam member 16 is substantially perpendicular. And a latch shaft 20 formed by bending one end of the second beam member 17 into a substantially U shape. As shown in FIG. 2, the ladder portion 3 has a suspension posture in which the latch hook 20 is hooked on the first hook portion 10 and the ladder portion 3 is suspended from the footrest portion 2. As shown in FIG. 2, the posture can be changed between a closing posture in which the hooking hook 20 is hooked on the second hooking portion 11 and the ladder portion 3 closes the left side surface of the footrest portion 2. The latch hook 20 of the ladder part 3 in the suspension posture shown in FIG. 2 is removed from the first latch part 10, and the ladder part 3 is pulled out in the direction of arrow A as shown in FIG. The ladder 3 is changed to the closed position shown in FIG. 3 by turning the hook 19 on the second hook 11 by turning the hook 19 on the second hook 11 by rotating the hook 19 on the second hook 11 counterclockwise. To do.

  On the other hand, the latching hook 20 of the ladder part 3 in the closed position shown in FIG. 3 is removed from the second latching part 11, and the ladder part 3 is pulled out in the direction of arrow A as shown in FIG. By rotating the portion 19 about 90 ° clockwise about the rotation center and hooking the latching hook 20 on the first latching portion 10, the ladder portion 3 is brought into the suspension posture shown in FIG. 2. Change.

  Further, the locking mechanism 13 fixes the latching hook 20 so as not to be detached from the second latching part 11 in order to maintain the closed position of the ladder part 3. The lock mechanism 13 can be operated remotely.

  FIG. 5 is a perspective view showing the restraining posture of the safety bar 4 according to Reference Example 1 of the present invention, and FIG. 6 is a perspective view showing the releasing posture of the safety bar 4 according to Reference Example 1 of the present invention. In addition, in FIG.5 and FIG.6, the state where the footrest part 2 and the safety bar 4 are not covered with the cover is shown for description.

  As shown in FIGS. 5 and 6, the footrest portion 2 is formed with a safety bar right shaft portion 14 and a safety bar left shaft portion 15 in the vicinity of both ends of the upper side of the front surface.

  The safety bar 4 is formed at the right end thereof, and the safety bar right bearing portion 21 that pivotally supports the safety bar right shaft portion 14 and the safety bar left shaft that is formed at the left end portion thereof and pivotally supports the safety bar left shaft portion 15. And a bearing portion 22.

  Further, the safety bar right shaft portion 14 and the safety bar right bearing portion 21 are provided with a ratchet mechanism 23, which will be described in detail later. When the ratchet mechanism 23 is locked, the safety bar 4 jumps from its position. Cannot be raised. The ratchet mechanism 23 can be remotely operated by a remote operation wire 24 or the like connected to a ratchet mechanism operation unit (not shown).

  The safety bar 4 configured as described above is positioned in the vicinity of the thigh of the child seated on the seat portion 1 by pushing down the safety bar 4 in the direction of arrow B as shown in FIG. 5 while locking the ratchet mechanism 23. When the ratchet mechanism 23 is unlocked, the safety bar 4 can be flipped up in the direction of arrow C as shown in FIG. Or it becomes the release posture which can leave a seat.

  7A is a top view of the ratchet mechanism 23 of the safety bar 4 according to Reference Example 1 of the present invention, FIG. 7B is a left side perspective view thereof, and FIG. FIG. 6 is a left side perspective view showing the relationship between the gear 25 and the claw body 26 at the time of locking.

  As shown in FIGS. 7A to 7C, the ratchet mechanism 23 according to the first reference example includes a gear 25, a claw body 26, a claw shaft portion 27, a remote operation wire fixing portion 28, an elastic member, and the like. 29, an elastic member first fixing portion 30, an elastic member second fixing portion 31, a first claw portion 32, and a second claw portion 33. The gear 25 is pivotally attached to the safety bar right bearing portion 21, and a plurality of teeth are formed on the outer periphery of the gear 25. Further, the claw body 26 is pivotally supported by the claw shaft portion 27 at a position separated from the gear 25, and a remote operation wire fixing portion 28 for fixing one end of the remote operation wire 24 or the like on the upper portion thereof. However, an elastic member first fixing portion 30 that fixes one end of an elastic member 29 that is mainly a spring is provided at a lower portion thereof, a first claw portion 32 is provided at an upper portion of the gear side, and a second portion is provided at a lower portion of the gear side. Each of the claw portions 33 is formed. The other end of the elastic member 29 is fixed to the elastic member second fixing portion 31.

  As shown in FIG. 7B, the ratchet mechanism 23 configured as described above has a safety function unless both the first claw portion 32 and the second claw portion 33 are in contact with the gear 25. The bar 4 is rotatable about the safety bar right shaft portion 14 and the safety bar left shaft portion 15 as the rotation center.

  Then, as shown in FIG. 7C, when the remote control wire 24 is loosened, the elastic member 29 contracts, and the claw body 26 rotates counterclockwise about the claw shaft 27 as the center of rotation. The ratchet mechanism 23 is locked when the first claw portion 32 comes into contact with the gear 25. That is, in this state, when a force is applied in the direction of arrow D, which is the direction in which the safety bar 4 is pushed down, the first claw portion 32 slides on the tooth surface of the gear 25, and the safety bar 4 is pushed down. Even if a force is applied in the direction of arrow E, which is the direction in which the safety bar 4 is flipped up, the first claw portion 32 collides with the tooth surface of the gear 25 and cannot slide. The safety bar 4 does not rotate in the direction of arrow E. Therefore, when the safety bar 4 is positioned in the vicinity of the thigh of the child sitting on the seat portion 1 with the ratchet mechanism 23 locked, the child cannot move up from that position, and the movement of the child is suppressed.

  Further, when the remote operation wire 24 or the like is pulled until the first claw portion 32 does not contact the gear 25, the ratchet mechanism 23 is unlocked.

  Furthermore, although not shown in particular, if the remote operation wire 24 is pulled until the second claw portion 33 comes into contact with the gear 25, the safety bar 4 stops at that position and does not rotate in either direction.

  Below, the operation | movement at the time of putting a child on the child seat 100 for bicycles by this reference example 1 is demonstrated.

  When putting a child on the bicycle child seat 100, first, the ladder portion 3 is set in a suspended posture and the safety bar 4 is set in a released posture. Then, the driver or the like holds the steering wheel and supports the bicycle while the child himself climbs the ladder portion 3 and sits on the seat portion 1, then attaches the seat belt 7 to the child and puts the safety bar 4 in a restrained posture. Then, the ladder part 3 is brought into a closed posture.

  On the other hand, when the child is lowered from the bicycle child seat 100, the ladder portion 3 is first put in the suspended posture, the safety bar 4 is put in the released posture, and the seat belt 7 is removed. Then, the driver or the like causes the child to lower the ladder portion 3 while supporting the bicycle, and places the ladder portion 3 in a closed posture after the child has lowered.

  As described above, the bicycle child seat according to the first reference example includes the ladder-shaped ladder portion and the safety bar that is rotatably disposed between the restraining posture and the releasing posture. Thus, when the child gets on and off, the driver or the like can easily support the vehicle body alone. Furthermore, since the ladder portion can be rotated between the suspended posture and the closed posture, it is possible to prevent the child from getting on the bicycle child seat without permission.

  In addition, although the left side of the footrest portion is opened, this may be opened on the right side surface. In this case, naturally, the ladder portion is near the bottom of the right side surface of the footrest portion. Suspended by.

  In the above description, the ladder bearing portion is provided in the vicinity of the bottom of the front portion of the footrest portion, but may be provided in the vicinity of the bottom portion of the rear surface of the footrest portion, and the shape of the ladder portion is a ladder shape. Any shape that can get on and off is acceptable.

  In addition, the ladder portion is configured to rotate around the ladder shaft portion pivotally supported by the cylindrical ladder bearing portion along the vicinity of the bottom of the front portion of the footrest portion. However, the tip of one of the girders of the ladder portion is made into a substantially spherical shape, and a pivot support portion is provided to pivotally wrap the tip of the girders, so that the girders turn around the tip of the girders. Or provide rails, etc. on both sides of the side where the footrest is opened, and move the ladder part up and down along the rails, etc. A rotation shaft may be provided, and the ladder portion may be placed in a closed posture by being rotated about the rotation shaft, or may be detachable.

  The shape of the safety bar may be a substantially T-shape or a substantially semicircular shape in addition to a substantially U-shape.

  In the above description, the seat portion, the footrest portion, and the safety bar are covered with a cover made of a rod-shaped member, but a resin or the like may be molded in the same shape as the cover.

  The seat belt 7 is a three-point system that is fixed at three points, but may be a two-point system, a four-point system, or the like.

  The elastic body of the ratchet mechanism is not limited to a spring but may be rubber or the like.

(Reference Example 2)
FIG. 8 is a side view showing a bicycle in which the seat portion 40 of the bicycle child seat 200 according to Reference Example 2 of the present invention is attached in a front riding posture. FIG. 9 is a side view of the bicycle child seat 200 according to Reference Example 2 of the present invention. It is a side view which shows the bicycle which attached the seat part 40 in the facing riding posture.

  As shown in FIGS. 8 and 9, the bicycle child seat 200 according to the second reference example includes a seat portion 40, a footrest portion 41, a seat mounting portion 42, and a facing riding bar portion 43. 8 and 9 show a state where the seat portion 40, the footrest portion 41, and the facing riding bar 43 made of a rod-like member are covered with a cover such as cloth.

  The seat portion 40 has a basket shape having a seat surface, a side surface, and a backrest, and is attached in the vicinity of the top portion of the handle stem 44 so as to be sandwiched by the rising portion 45 of the handle bar from the left and right.

  The footrest portion 41 has a substantially box shape whose upper surface is opened, and is formed deeper than the seat portion 40 in front of the seat portion 40.

  The seat attachment portion 42 is formed behind the footrest portion 41 and is fixed to the vicinity of the top portion of the handle stem 44 with screws or the like, so that the seat portion 40 has a forward-facing riding posture or a backward-facing riding posture. As described above, the seat portion 40 is detachably attached, and details thereof will be described later.

  The face-to-face riding bar portion 43 is a bar for a child to grip when the seat portion 40 is in a face-to-face riding posture, and is carried behind the seat mounting portion 42.

  Further, the footrest portion 41, the seat mounting portion 42, and the facing ride bar portion 43 are integrally formed.

  FIG. 10 is a perspective view showing a front riding posture of the seat portion 40 of the bicycle child seat 200 according to Reference Example 2 of the present invention, and FIG. 11 shows the seat portion 40 of the bicycle child seat 200 according to Reference Example 2 of the present invention. It is a perspective view which shows a facing riding attitude | position. 10 and 11, only the seat portion 40, the seat mounting portion 42, and the facing boarding bar portion 43 are shown for explanation, and the seating portion 40 and the facing boarding bar portion 43 are covers. It shows an uncovered state.

  As shown in FIGS. 10 and 11, the seat portion 40 is provided with a front screw hole 50 in the vicinity of the front center portion of the seat surface and a rear screw hole 51 in the vicinity of the rear center portion of the seat surface. It has a pinching tool 52 for pinching the mounting portion 42 and fixing the seat portion 40. The seat mounting portion 42 has a seat mounting hook 53 in the vicinity of the rear center portion thereof and a screw hole 54 in the vicinity of the front center portion thereof. The seat portion 40 passes through the front screw hole 50 and the screw hole 54 in the front riding posture shown in FIG. 10, and passes through the rear screw hole 51 and the screw hole 54 in the facing riding posture shown in FIG. These are attached to the seat mounting portion 42 using bolts and nuts 55, respectively.

  The bicycle child seat 200 configured as described above has the seat mounting hook 53 so that the bolts and nuts 55 are removed from the front riding posture of the seat portion 40 shown in FIG. The seat portion 40 is removed from the seat portion 40, and the seat portion 40 is turned upside down, hooked with the seat mounting hook 53 so as to be pushed in from the front, and the bolts and nuts 55 are stopped, whereby the seat portion 40 as shown in FIG. This is the face-to-face riding posture.

  As described above, according to the bicycle child seat according to the second reference example, the child can be seated so as to face the driver as necessary, and at this time, the driver can grasp the state of the child well. it can.

  In addition, although the seat part and the seat attachment part were mainly fixed with the volt | bolt and the nut, you may make it pinch and fix.

  Moreover, although the seat attachment part was attached to the bicycle by screwing, it may be fixed by welding or sandwiched.

  Further, the seat mounting portion has the screw hole on the front side and the seat mounting hook on the rear side, but may have the seat mounting hook on the front side and the screw hole on the rear side.

(Embodiment 1)
FIG. 12 is a side view showing the front side of the bicycle according to the first embodiment of the present invention, and FIG. 13 is a perspective view showing a bicycle parking posture of the both-leg stand 300 of the bicycle according to the first embodiment of the present invention. FIG. 14 is a perspective view showing the release posture of the two-leg stand 300 of the bicycle according to the first embodiment of the present invention.

  As shown in FIG. 12, the bicycle according to the first embodiment includes a both-leg stand 300 on the front wheel side.

  As shown in FIGS. 13 and 14, the two-leg stand 300 has a column portion that is rotatably disposed on a hub shaft 65 of a front wheel via a mounting portion 66 with a column portion rotation center 64 as a rotation center. 61, a grounding portion 62 extending from the column portion 61, and a left and right connecting portion 63 that couples the left and right grounding portions 62. The column portion 61 extends substantially vertically downward from the column portion rotation center 64, The posture of the bicycle can be changed between a parking posture for supporting the bicycle when the grounding portion 62 is grounded and a release posture in which the column portion 61 extends substantially horizontally rearward from the column portion rotation center 64.

  The grounding unit 62 includes a front grounding unit 62a that contacts the front and outside of the vertical lower position of the support column rotation center 64 and a support column rotation center 64 in the parking posture state of the both-leg stand 300 shown in FIG. And a rear grounding portion 62b that grounds behind and outside of the vertical lower position. Further, as shown in FIG. 12, the distance L2 from the vertical lower position of the support column rotation center 64 to the rear grounding portion 62b is greater from the vertical lower position of the support column rotation center 64 to the front grounding portion 62a. It is longer than the distance L1.

  Next, the operation will be described.

  By jumping up the both-leg stand 300 in the parking posture shown in FIG. 13, the posture of the both-leg stand 300 is changed to the release posture shown in FIG. 14, and the bicycle is allowed to run from the self-standing state.

  On the other hand, the front grounding part 62a is first grounded by pressing down the left and right coupling parts 63 or the rear grounding part 62b of the both-leg stand 300 shown in FIG. By pushing down the part 63 or the rear grounding part 62b, the rear grounding part 62b is also grounded, whereby the both leg stands 300 are changed in posture to the parking posture shown in FIG. It becomes.

  Thus, the bicycle with a front wheel stand according to the first embodiment is provided with both leg stands on the front wheel side for self-supporting the bicycle when parking, etc., so that the vehicle body does not fluctuate when parking, etc. However, it is possible for one person to easily carry children and luggage on and off. Furthermore, the two-leg stand extends substantially horizontally rearward of the vehicle body in the release posture, and the distance from the vertical lower position of the center of rotation of the support column is longer at the rear grounding portion than at the front grounding portion. Therefore, it is possible to operate in a posture that does not require excessive force to change from the released posture state to the parking posture state.

  In the above description, the lifting means (ladder portion 3) for mainly putting a child on the bicycle child seat 100 is in Reference Example 1, the bicycle child seat 100 can be turned forward or rearward in Reference Example 2, and the front wheel is provided. Although the two-leg stand 300 is described in the first embodiment, of course, Reference Examples 1 and 2, Reference Example 2 and Embodiment 1, Reference Example 1 and Embodiment 1, and Reference Examples 1, 2 and A bicycle that combines form 1 also constitutes one embodiment.

  When a child grasps the grip rods 8 and 9 and sits on the bicycle child seat 100 with his / her feet on the ladder section 3 or when the child leaves the bicycle child seat 100, the weight of the child is on the left side of the bicycle. It takes. In particular, when a child steps on the step portion 18 of the ladder portion 3, the impact is applied to the left side of the bicycle.

  At this time, in a bicycle that does not include the both-leg stand 300 as described in the first embodiment, torque is generated in the front wheel and the front wheel rotates unless the parent fixes the handle by grasping the handle. Therefore, it is not only difficult for the child to get on and off the bicycle child seat 100 by his / her own power, but also the child may be afraid by rotation or may be dangerous to the child.

  However, in the bicycle in which the reference example 1 and the first embodiment are combined, if both the leg stands 300 are parked, even if the child's weight is applied to the left side of the bicycle to sit on the bicycle child seat 100, The front wheels are not staggered and rotated by the two-leg stand 300 in the parking position. Of course, the impact generated when the child steps on the stepping portion 18 of the ladder portion 3 is also absorbed by the two-leg stand 300 in the parking position. Therefore, the child can easily sit on the bicycle child seat 100 by his / her own power, and the child can get on and off the bicycle child seat 100 with the ladder portion 3 more safely. This is also true for a configuration in which the orientation of the bicycle child seat 100 itself can be changed back and forth as in Reference Example 2.

  As described above, in the bicycle according to the present invention, the vehicle body does not fluctuate when parked or the like, and a driver or the like can easily carry a child or a luggage on and off, and can park from a released posture state. It is useful for various bicycles equipped with a stand for self-supporting because it can be operated in a posture that does not require too much force to make the wheel posture state.

DESCRIPTION OF SYMBOLS 1,40 Seat part 2,41 Footrest part 3 Ladder part 4 Safety bar 5,44 Handle stem 6,45 Rising part of the handle bar 7 Seat belt 8,9 Grip rod 10 First latch part 11 Second hook Stop part 12 Ladder bearing part 13 Lock mechanism 14 Safety bar right shaft part 15 Safety bar left shaft part 16 First girder member 17 Second girder member 18 Step part 19 Ladder shaft part 20 Hook 21 Safety bar right bearing part 22 Safety bar left bearing portion 23 Ratchet mechanism 24 Remote operation wire etc. 25 Gear 26 Claw body 27 Claw shaft 28 Remote operation wire fixation portion 29 Elastic member 30 Elastic member first fixing portion 31 Elastic member second fixing portion 32 First 1 claw portion 33 second claw portion 42 seat mounting portion 43 facing bar portion 50 front screw hole 51 rear screw hole 52 pinching tool 53 seat mounting hook 54 screw hole 55 Bolts and nuts 61 Supporting part 62 Grounding part 62a Front grounding part 62b Rearing grounding part 63 Left and right connection part 64 Supporting part turning center 65 Hub axle 66 of front wheel Attachment part 100, 200 Bicycle child seat 300 Biped stand

Claims (4)

A bicycle provided with a both-leg stand having a column portion rotatably disposed near a hub axle of a front wheel of the bicycle and a grounding portion extending from the column portion,
The two-leg stand has a bicycle parking posture in which the column portion extends substantially vertically downward from the center of rotation of the column portion and the grounding portion contacts the bicycle, and the column portion rotates the column portion. The bicycle, wherein the posture is changeable between a release posture extending substantially horizontally rearward from the center. The grounding portion includes a front grounding portion that is grounded at a front position relative to a vertical lower position of a rotation center of the support column and a vertical lower position of the rotation center of the support column in a parking posture state of the both leg stands. Also has a rear grounding portion for grounding at a rear position,
The distance from the said back grounding part to the perpendicular | vertical downward position of the rotation center of the said support | pillar part is longer than the distance from the said front grounding part to the vertical downward position of the rotation center of the said support | pillar part. bicycle.   The bicycle according to claim 1, comprising a child seat for the bicycle.   The bicycle according to claim 3, wherein the bicycle child seat is attached to a vicinity of a top portion of the handlebar stem of the bicycle so as to be sandwiched from right and left by a rising portion of the handlebar of the bicycle.

Images