JP2005343266A - Step device of child seat for two-wheeled vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a child seat step device for a two-wheeled vehicle made serviceable for a long period in compliance with the growth of a child as user. <P>SOLUTION: The child seat step device 2 structured as dangling in front of each side of the seat 1 having a seating part 3 whereon the child is seated in straddling and allowing the seated child to put his legs thereon, is equipped with supporting parts 2a dangling in front of both sides of the seating part 3, foot rests 2b installed the the bottoms of the supporting parts 2a, and guards 2c, 2d installed in front and behind the supporting parts 2a, wherein the guards 2c in the front are made movable for regulation in the fore and aft direction relative to the supporting parts 2a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a step device for a child seat for a motorcycle.

In general, a child seat for a motorcycle is often attached to the front of the motorcycle while the child is small (eg, up to 2 to 3 years old), and is attached to the rear after that (eg, up to 3 to 5 years old). .
In addition, when a child is seated on a seat, the leg is often suspended from both sides of the front of the seat over the seat. In this case, a step device is used to prevent both feet of the child from contacting the front wheel or the rear wheel during traveling.
The conventional step device is provided with a footrest part projecting outward from both ends of the support member suspended from the front part on both sides of the seat part of the child seat, and a guard part is integrally formed before and after the support member. (For example, refer to Patent Documents 1 and 2).
JP 2000-203478 A JP 2002-284059 A

However, the configuration of the conventional step device has the following problems. That is, the child grows and grows, and both legs become longer, whereas in the conventional step device, the position of the footrest part and the position of the front and rear guard parts remain the same with respect to the seat part. No longer respond to the growth of children. For this reason, children who grow up will bend their legs in a U shape and put them on the step device, but the knees and shins will protrude forward, hit the front guard and sit in a natural posture. There was a problem that became difficult.
The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a step device for a child seat for a motorcycle that can be used for a long period of time corresponding to the growth of the child.

In order to achieve the above object, the present invention is a step device for placing both legs of a child seated on the seat that is suspended from both sides of a seat having a seat on which a child sits. The step device includes a support portion that hangs down from the front portions on both sides of the seat portion, a footrest portion that is provided at a lower end of the support portion, and a guard portion that is disposed before and after the support portion. It is characterized in that the guard part on the side is provided so as to be movable in the front-rear direction relative to the support part.
According to this configuration, the positions of the knees and shins move forward in response to changes in leg length accompanying the growth of the child, and the guard part on the front side is moved forward relative to the support part in response to this. Can be adjusted to move to. This allows the child seat including the step device to be used over a long period of time with the child's growth.

Further, the present invention is characterized in that the footrest portion of the step device is provided so as to be movable in the vertical direction with respect to the support portion.
According to this configuration, the position in the height direction of the footrest portion can be adjusted in accordance with the change in leg length accompanying the growth of the child.
Furthermore, the present invention is characterized in that a guard part on the rear side of the step device is provided so as to be movable and adjustable in the front-rear direction with respect to the support part.
According to this configuration, the position in the front-rear direction of the guard portion on the rear side can be adjusted in accordance with the change in leg length accompanying the growth of the child.

  ADVANTAGE OF THE INVENTION According to this invention, the step apparatus of the child seat for two-wheeled vehicles which can be used for a long period of time according to child's growth can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the step device 2 of the present invention is suspended from the front portions on both sides of the seat portion 3 of the child seat 1.
As shown in FIGS. 1 and 2, the child seat 1 includes a seat portion 3 on which a child is seated, a rear wall portion 4 and left and right side wall portions 5 surrounding the seat portion 3 on the rear side and the left and right sides. The front part and the upper part of the seat part 3 are opened, and the whole is made of resin. A cushion material (not shown) is disposed on the upper surface of the seat portion 3 and the inner surface of the rear wall portion 4. The rear wall 4 and the left and right side walls 5 are provided with safety belts (not shown) for children seated on the seat 3. In front of the seat portion 3, there is provided a resin children's grip 6 that is gripped by a child.

As shown in FIGS. 1 and 2, the step device 2 is provided so that the child sits on the seat 3, which is suspended from the front portions on both sides of the seat 3 of the seat 1 having a seat 3 on which the child sits. It is for carrying both legs.
The step device 2 is disposed in front of and behind the support portion 2a suspended from both sides of the front portion of the seat portion 3, a footrest portion 2b provided at the lower end of the support portion 2a, and the support portion 2a. Guard parts 2c and 2d are provided, and the whole is made of resin.
The rear guard portion 2d is formed integrally with the rear portion of the support portion 2a. The front guard portion 2c is formed separately from the support portion 2a. Then, as shown in FIG. 3, the guard portion 2c on the front side is fastened and loosened by a fastening member comprising a bolt 2f and a nut 2g through a resin backing plate 2e as shown in FIG. doing.

A bolt insertion hole 2h and a long hole 2i that is long in the front-rear direction are formed in the support part 2a and the guard part 2c on the front part side, and the guard part 2c on the front part side with respect to the support part 2a. Can be adjusted to move back and forth.
As shown in FIGS. 4 (A) to 4 (E) and FIG. 5, the front-side guard portion 2c has a rectangular plate shape that is long in the front-rear direction, and the front end side is bent outwardly from the seat. 2c1 is formed. In the guard portion 2c, two elongated holes 2i that are long in the front-rear direction are formed in parallel, a concave groove 2c2 is formed on the outer surface side along the long hole 2i, and a convex surface 2c3 is formed on the inner surface side. A rectangular hole 2c4 that is long in the front-rear direction is formed between the long holes 2i of the strip, and a concave groove 2c5 is formed on the outer surface side along the rectangular hole 2c4. The groove 2c2 and the groove 2c5 have the same groove width, and the guard portion 2c is lightened and designed. The rectangular hole 2c4 is also formed to reduce the weight and design of the guard portion 2c. Note that a notch 2c6 is provided on the rear end side upper part of the guard part 2c to avoid interference with a two-wheeled vehicle carrier, which will be described later.

Further, as shown in FIGS. 6A to 6C, the contact plate 2e has a rectangular plate shape, and nuts 2g are embedded at both ends in the longitudinal direction. A concave groove 2e1 is formed on one side surface of the backing plate 2e to reduce the weight.
As shown in FIGS. 1 and 2, a guard member 8 is provided on the front surface of the child grip 6. The guard member 8 includes a wall body 8a and left and right support arms 8b extending in the front-rear direction from the left and right sides of the wall body 8a, and is entirely made of resin.
The guard member 8 has the wall 8a positioned in front of the seat 1 with respect to the seat 1, and the rear of the wall 8a, the lower side of the left and right support arms 8b, and the front of the left and right side walls 5 of the seat 1. And the upper part of the seat part 3 of the seat 1 form a leg insertion part 7 into which the leg of the child seated on the seat part 3 can be inserted, and the wall 8a protects the front of the child seated ( With the wall 8a positioned behind the seat 1, the left and right support arms 8b are superposed on the left and right side walls 5 of the seat 1, and the upper back of the child on which the wall 8a is seated. It is attached to the state (chain line state of FIG. 1) which becomes a droop or a headrest so that the position can be changed.

As a configuration for that purpose, the free ends of the left and right support arms 8b are pivotally attached to the upper front ends of the left and right side wall portions 5 of the seat 1 so as to be rotatable around a horizontal axis via a pivot 9, and the wall 8a is gripped by a child. 6 and the rear wall 4 of the rear wall 4 of the seat 1 are detachably fixed by fastening bolts 12 via a first fixing bracket 10 and a second fixing bracket 11.
As shown in FIGS. 7A and 7B, the first fixed bracket 10 can be opened and closed by a hinge portion 10c in which one end of each of the clamp pieces 10a and 10b divided into two substantially semicircular arcs is thin. Bolt insertion holes 10f and 10g are formed in joint flange portions 10d and 10e formed at the other ends of both clamp pieces 10a and 10b, and the whole is made of resin, and the bolt of one joint flange portion 10d A nut 10h for the tightening bolt 12 is fixed to the outer surface of the insertion hole 10f. As shown in FIGS. 1 and 2, the first fixing bracket 10 is attached to the crosspiece member 6 a below the child grip 6, and when the guard member 8 is positioned in front of the seat 1, The fastening bolt 12 is fixed to the nut 10h through the bolt insertion hole 8d.

  As shown in FIGS. 8A and 8B, the second fixing bracket 11 is a long and thin plate made of resin, has mounting holes 11a and 11b formed at both ends, and a bolt insertion hole 11c at the center in the longitudinal direction. Is formed and the nut 11d is fixed. As shown in FIGS. 1 and 2, the second fixing bracket 11 is fixed to the upper outer surface of the rear wall portion 4 of the seat 1 using the mounting holes 11 a and 11 b, and the guard member 8 is fixed to the seat 1. When the upper backrest or headrest is positioned behind, the fastening bolt 12 is fastened to the nut 11d through the bolt insertion hole 8d of the wall 8a.

As shown in FIG. 1, the guard member 8 is provided with a stopper protrusion 8 c that comes into contact with the upper surface of the second fixed bracket 11 of the rear wall portion 4 when used as an upper backrest or a headrest. By this stopper projection 8c, the downward load on the guard member 8 when the guard member 8 is used as an upper backrest or a headrest is borne on the rear wall portion 4 to reduce the load on the tightening bolt 12.
As shown in FIG. 9, a plurality of locking projections 13 are formed on the bottom surface of the seat 1, and a fitting hole 14 into which the locking projections 13 are fitted and a front portion and a rear portion of the two-wheeled vehicle 21. A mounting base 16 for slidably inserting a slide member 19 having a lock member 15 for locking the locking projection 13 fitted in the fitting hole 14 is attached, and the seat 1 is attached by the lock member 15. The base 16 is detachably attached.

The mounting base 16 is entirely made of resin, and is attached to the front handle stem portion 17 and the rear loading base 18 of the motorcycle 21 as shown in FIGS.
As shown in FIGS. 11A to 11D, a resin slide member 19 is fitted into the mounting base 16 so as to be slidable in the front-rear direction of the motorcycle, and the lock member 15 is inserted into the slide member 19. Is branched.
As shown in FIG. 11A, the slide member 19 is pushed into the right side (front of the two-wheeled vehicle) with respect to the mounting base 16 and stored, and as shown in FIG. 16 is slidable to the left (rear of the two-wheeled vehicle) with respect to 16, and both of these states are maintained. Correspondingly, an operation piece portion 19c having a first locking portion 19a and a second locking portion 19b is provided near the rear end of the slide member 19.

The operation piece 19c is bent near the rear end of the slide member 19 so that the first locking portion 19a and the second locking portion 19b can be engaged and disengaged with respect to the locking portion 16a of the mounting base 16. The slide member 19 is formed in the shape of a possible tongue piece, and the operating piece portion 19c is pressed downward to disengage the first locking portion 19a from the locking portion 16a of the mounting table 16, whereby the slide member 19 is attached to the mounting table 16. It is possible to withdraw from.
A stopper 20 for preventing erroneous operation is attached to the rear end of the operation piece 19c so as to be slidable in the front-rear direction of the motorcycle 21. The stopper 20 is made of resin, and is provided to prevent the operation piece portion 19c from being erroneously pressed downward when the slide member 19 is stored in the mounting base 16. Thus, when preventing this erroneous operation, as shown in FIG. 11A, the stopper 20 is pulled backward with respect to the operation piece 19c. When the stopper 20 is pulled back, the rear end of the stopper 20 comes into contact with the handle 19d at the rear end of the slide member 19 and is prevented even if the operation piece 19c is pressed downward.

However, as shown in FIG. 11B, when the stopper 20 is pushed forward with respect to the operation piece 19c, the rear end of the stopper 20 does not contact the handle 19d at the rear end of the slide member 19. As shown in FIG. 11C, the operation piece 19 c can be pressed downward to disengage the first locking portion 19 a from the locking portion 16 a of the mounting base 16. As a result, as shown in FIG. 11D, the slide member 19 can be pulled out backward with respect to the mount 16 with the handle 19 d at the rear end of the slide member 19.
When the slide member 19 is pulled out in this way, the locking member 15 is unlocked from the locking protrusion 13 on the bottom surface of the seat 1, and the seat 1 is detached from the mounting base 16 to the rear part of the motorcycle 21, or It can be changed from the rear to the front.

When the replacement of the seat 1 is completed, the lock member 15 is locked to the locking protrusion 13 on the bottom surface of the seat 1 by pushing the slide member 19 to the right from the state of FIG. The first locking portions 19 a of the 19 operation piece portions 19 c are locked to the locking portions 16 a of the mounting base 16. And if the stopper 20 is pulled back as shown to (A) of FIG. 11, the said state will be hold | maintained and a misoperation will be prevented.
11A to 11D show the case where the mounting base 16 is attached to the rear loading platform 18 of the two-wheeled vehicle, but the similar mounting base 16 is also attached to the handle stem portion 17 at the front of the two-wheeled vehicle. Thus, the seat 1 can be changed between the front part and the rear part of the motorcycle 21 by a one-touch operation. Note that the mounting base 16 may be replaced with the seat 1 by using a common one before and after the two-wheeled vehicle 21, or one having a different mounting structure before and after the two-wheeled vehicle 21 may be used. In this case, the attachment / detachment structure relationship between the front and rear mounting bases 16 and the seats 1 of the two-wheeled vehicle 21 adopts the above-described structure, and the structure of the part that attaches the mounting base 16 to the front and rear parts of the two-wheeled vehicle 21 is the front part of the two-wheeled vehicle 21. It shall be configured to fit each part of the rear.

FIGS. 10A and 10B illustrate a case where the seat 1 and the cargo bar 22 are detachably mounted on the front and rear of the two-wheeled vehicle 21.
1st Embodiment of the step apparatus of the child seat for two-wheeled vehicles which concerns on this invention consists of the above structure, Next, a usage pattern and operation | movement are demonstrated.
While the child is small (for example, from 10 months to 3 years old), as shown in FIG. 10A, the seat 1 is mounted on the mounting base 16 attached to the handle stem 17 at the front of the motorcycle 21. . This mounting method may be performed according to the above-described procedure described with reference to FIGS. 9 and 11A to 11D, and details thereof are omitted. In this case, the guard portion 2c on the front side of the step device 2 is fixed to the support portion 2a with a small amount of protrusion toward the front side.

When the child grows to some extent (for example, 3 years old or older), as shown in FIG. 10B, the seat 1 is removed from the front portion of the two-wheeled vehicle 21 and replaced with the rear loading platform 18 as described above. And the guard part 2c of the front part side of the step apparatus 2 is protruded largely and fixed to the front part side with respect to the support part 2a. In this case, the guard member 8 is used as an upper backrest or a headrest.
Thus, according to the embodiment of the present invention, when the child is small, the amount of forward projection of the guard portion 2c on the front side of the step device 2 is reduced, and when the child becomes large, the front side The child's guard part 2c is protruded greatly forward, the child is seated straddling the seat part 3 of the seat 1, and both legs are inserted and suspended from the leg insertion parts 7 on both sides to secure a sufficient seating space. And can be seated in a stable state.

Further, when the child becomes larger, the guard member 8 is eliminated from the front of the seat by attaching the seat 1 to the rear portion of the motorcycle 21 and positioning the guard member 8 at the rear of the seat to form an upper backrest or headrest. Thus, both the knees of the child can be protruded forward, and the back can be seated on the upper back or the headrest so that the child can sit comfortably.
FIGS. 12A and 12B show a second embodiment of the step device according to the present invention. The first embodiment uses the guard portion 2c on the front side of the step device to support the support portion 2a. In addition, the footrest portion 2b is also provided so as to be movable in the vertical direction with respect to the support portion 2a. In this case, the footrest portion 2b is configured separately from the support portion 2a, and the footrest portion 2b is provided with an attachment leg portion 2b1, and the attachment leg portion 2b1 is provided with an elongated hole 2b2 in the vertical direction. . The mounting leg 2b1 can be positioned and fastened to the support 2a by a fastening member 2b3 such as a bolt or a nut at an arbitrary height position within the range of the long hole 2b2. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  FIGS. 13A and 13B show a third embodiment of the step device according to the present invention. In addition to the second embodiment, the guard part 2d on the rear side also has a support part 2a. It is provided so that movement can be adjusted in the front-rear direction. In this case, the rear guard portion 2d is configured separately from the support portion 2a, and a longitudinal hole 2d1 in the front-rear direction is provided in the rear guard portion 2d. The rear guard portion 2d can be positioned and fastened to the support portion 2a by a fastening member 2d2 such as a bolt or a nut and a contact plate 2d3 at any longitudinal position within the long hole 2d1. Since other configurations are the same as those of the second embodiment, the description thereof is omitted.

  The step device for a child seat for a motorcycle according to the present invention comprises the above embodiments, but the present invention is not limited to the above embodiments, and can be freely changed within the meaning and scope described in the claims. May be implemented. For example, although the case where the movable part of the step device can be moved and adjusted steplessly between the long hole and the fastening member is exemplified, the movement may be adjusted stepwise over a plurality of stages. Moreover, although the seat 1 has illustrated the case where the guard member 8 can be combined with an upper backrest or a headrest, it may be applied to a seat other than such a structure. Moreover, although the case where it applies to the seat made to change through the attachment stand 16 before and behind a two-wheeled vehicle is illustrated, you may apply to a seat other than this. Furthermore, in the embodiment of FIGS. 10A and 10B, a case where the present invention is applied to a two-wheeled vehicle using both the seat 1 and the cargo 22 is illustrated. You may apply. The present invention is applicable to all motorcycles such as bicycles, power-assisted bicycles, and motor-driven bicycles. Although the seat 1 and the step device 2 are made of resin, these materials may be other than resin.

It is a schematic side view of 1st Embodiment of the step apparatus of the child seat which concerns on this invention. It is a schematic perspective view of 1st Embodiment of the step apparatus of the child seat which concerns on this invention. It is a vertical rear view of the first embodiment of the step device for the child seat according to the present invention. (A), (B), and (C) are a plan view, a front view, and a left end view of the guard portion on the front side in the first embodiment of the step device according to the present invention, and (D) and (E) are (B) It is a DD line and EE line sectional view of). It is a rear view of the guard part of the front part side in 1st Embodiment of the step device which concerns on this invention. (A) (B) is the front view and back view of a backing plate, (C) is CC sectional view taken on the line of (A). (A) and (B) are the front view and the vertical side view of a deployment state of the 1st fixed bracket. (A) and (B) are the front view and vertical side view of a 2nd fixing bracket. It is a schematic perspective view which shows the latching relationship of the child seat bottom face and attachment stand to which this invention is applied. (A) (B) has shown the side view of embodiment which attached the child seat to which this invention is applied to the front part and rear part of a two-wheeled vehicle. (A)-(D) are the vertical side views which show the operation | movement order at the time of the lock state of a mounting base used for the attachment to the two-wheeled vehicle to which this invention is applied, and a lock release operation. (A) is a schematic side view of 2nd Embodiment of the step apparatus of the child seat which concerns on this invention, (B) is BB sectional drawing of (A). (A) is a schematic side view of 3rd Embodiment of the step apparatus of the child seat which concerns on this invention, (B) is BB sectional drawing of (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 2 Step apparatus 2a Support part 2b Footrest part 2c Guard part on the front side 2d Guard part on the rear side 2e Pad 2f Bolt 2g Nut 2h Bolt insertion hole 2i Long hole 3 Seat part 4 Rear wall part 5 Left and right side wall part 6 Child grip 7 Leg insertion part 8 Guard member 8a Wall body 8b Left and right support arm 9 Pivot 10 First fixing bracket 11 Second fixing bracket 12 Tightening bolt 13 Locking protrusion 14 Fitting hole 15 Locking member 16 Mounting base 17 Handle Stem portion 18 Rear loading platform 19 Slide member 20 Stopper 21 Two-wheeled vehicle 22 Loading

Claims (3)

  A step device suspended from both sides of a seat having a seat on which a child sits, and for placing both legs of the child seated on the seat, the step device being in front of both sides of the seat A support portion that hangs from the support portion, a footrest portion that is provided at a lower end of the support portion, and a guard portion that is disposed in front of and behind the support portion, the guard portion on the front side with respect to the support portion A child seat device for a two-wheeled vehicle, characterized in that it can be moved and adjusted in the front-rear direction.   The step device for a child seat for two-wheeled vehicles according to claim 1, wherein a footrest portion of the step device is provided so as to be movable in the vertical direction with respect to the support portion.   The step device for a child seat for a motorcycle according to claim 1 or 2, wherein a guard portion on the rear side of the step device is provided so as to be movable and adjustable in the front-rear direction with respect to the support portion.

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