JP2002240763A - Seat device for infant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a guide side plate 11 from contacting with or bumping against a handle bar 36 of a bicycle 35 in a seat device for an infant 1 mounted on the handle bar 36 end equipped with a seat part 2 enabling folding/opening. SOLUTION: A support body 4 is connected to the guide side plate 11 via a guide body 16 sliding along the groove longitudinal direction of a guide groove 15. The plate 11 is rotatably connected to a mounting part 5. The support body 4 is connected to the mounting part 5 by a hinge part 9 enabling the seat part 2 to be folded/opened. The groove 15 guides the plate 11 such that the seat part 2 protrudes rearward of the handle bar 36 of the bicycle 35 when folded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infant seat apparatus which is mounted near a handlebar of a bicycle and whose seat portion can be freely folded and opened.

[0002]

2. Description of the Related Art Conventionally, this kind of infant seat apparatus is proposed in, for example, Japanese Utility Model Publication No. 3055203. FIGS. 8 and 9 show the infant seat device 41 proposed here. As shown in FIGS. 8 and 9, a conventional infant seat device 41 is mounted on a stem 37 of a handle 36 of a bicycle 35, and includes a seat portion 42, a device frame 43 serving as a skeleton of the device, and The seat device 41 is mainly composed of mounting means 57 for mounting the seat device 41 to the bicycle 35. When the seat portion 42 is not used, the seat portion 2 can be folded toward the handle 36 of the bicycle 35. I have.

The device frame 43 includes a support 44 for supporting the seat 42, a mounting portion 45 connected to the support 44, and the seat 42 via the support 44 and the mounting portion 45. And a guide side plate 51 for holding the guide side plate. The guide side plate 51 is provided with a guide groove 55 for guiding the movement of the guide side plate 51 on its body, and connects the support body 44 and the mounting portion 45 as follows. That is, the guide side plate 51 and the support body 44 are connected to each other by a fixing pin 53 that makes the guide side plate 51 rotatable. The connection with the mounting part 45 is made.

The folding / opening operation of the seat portion 42 is performed by rotating the seat portion 42 about a hinge portion 49 connecting the support 44 and the mounting portion 45. In conjunction with the folding / opening operation of the seat portion 42, the guide side plate 51 is moved by the guide groove 55 and the guide body 56 while the fixing pin 53
Around the center. The folding / opening operation of the seat portion 42 is performed by rotating the support body 44 in the direction of an arrow shown in FIG. 9 around the hinge portion 49. The guide side plate 51 performs the folding / opening operation. In conjunction with this operation, the vehicle moves toward and away from the handle 36 of the bicycle 35.

[0005]

When such a conventional infant seat apparatus 41 is used, the guide side plate 51 comes into contact with or hits the handle 36 of the bicycle 35 when the seat section 42 is folded. The seat part 4
2 may not be able to be folded. This is because bicycle parts manufacturers are currently producing their own bicycle parts, so that the shape, dimensions,
A wide variety of structures are also manufactured, and even if the infant seat device 41 can be mounted on the bicycle 35, depending on the shape, size and structure of the handle 36, the folding and opening operations of the seat portion 42 are linked. This is a problem caused by obstructing the movement of the guide side plate 51.

In such a case, if a portion of the guide side plate 51 that comes into contact with or abuts on the handle 36 is cut or the shape of the guide groove 55 is changed, the guide side plate 51 becomes The strength required for holding the seat portion 42 is lost, or a large resistance is applied to the seat portion 42 when the folding / opening operation of the seat portion 42 is performed, and the folding / opening of the seat portion 42 is performed. There is a problem that it becomes difficult to perform the operation. Furthermore, the contact portion between the guide groove 55 and the guide body 56 intermittently collides with the vertical vibration generated during the operation of the bicycle 35 to generate an impulsive sound, thereby giving a discomfort to the infant or the driver. was there.

Accordingly, it is a first object of the present invention to provide an infant seat apparatus in which the guide side plate 51 does not contact or hit the handle 36 when the seat section 42 is folded. In addition, in addition to the first object, an infant seat device that maintains strength for holding the seat portion 42 (does not lose it) and does not exert a large resistance when performing the folding / opening operation of the seat portion 42 is provided. The second purpose is to provide, and further, the first
Alternatively, in addition to the second object, an infant seat for reducing discomfort to an infant or a driver due to an impact sound generated from a portion where the guide groove 55 and the guide body 56 collide with each other when the bicycle 35 is driven. Third to provide equipment
The purpose of.

[0008]

The present invention employs the following technical means to solve the above-mentioned problems. That is, as a first technical means, in the infant seat apparatus 1 which is mounted on the handle 36 of the bicycle 35 and the seat 2 can be freely folded and opened, the seat 2 and the support of the seat 2 are provided. The body 4, a mounting portion 5 that rotatably supports the support 4 and is mounted on the handle 36, and supports the support 4 when the seat 2 is used.
And a pair of guide side plates 11 that follow the rotation of
The guide side plate 11 includes a guide groove 15 for guiding an operation following the rotation of the support 4, and the support 4 slides along a longitudinal direction of the guide groove 15. 16, the guide side plate 11 is connected to the mounting portion 5 so as to be rotatable, and the support body 4 folds the seat portion 2.
The guide portion 15 is connected to the mounting portion 5 by a hinge portion 9 that allows the guide side plate 11 to project rearward of the handle 36 when the seat portion 2 is folded. is there.

As a result, the guide side plate 11 does not come into contact with or abut on the handle 36, and the part where the guide groove 15 and the guide body 16 collide with each other when the bicycle 35 is driven is lower than in the prior art. As a result, it is possible to reduce the discomfort of the infant and the driver due to the impact sound generated from the collision. Second
As a technical means, the guide side plate 11 in the first technical means is located so as to be close to the bottom outer surface 10 of the seat 2 when the seat 2 is folded.

Accordingly, when the seat 35 is folded and the bicycle 35 is driven, the guide side plate 11 does not interfere with the driver. As a third technical means,
The guide side plate 11 in the first or second technical means has a boomerang shape that is curved in a U-shape, and the boomerang shape is a curved portion 2 that is convexly curved.
Curve portion 27b in which the radius of curvature of the vertex of 7a is concavely curved
The guide groove 15 is located between the convexly curved curve portion 27a and the concavely curved curve portion 27b and is closer to the concavely curved curve portion 27b. Is to be located.

As a result, the guide side plate 11 can maintain the strength for holding the seat portion 2. 4th
The technical means of the present invention is that the guide groove 15 in the third technical means has an arc shape along the boomerang-shaped curve of the guide side plate 11. As a result, a large resistance is not applied to the seat portion 2 when performing the folding / opening operation. The fifth technical means includes, in addition to the first technical means, the guide body 16.
That is, the guide side plate 11 includes a lock portion 16a for preventing the guide body 16 from coming off in the longitudinal direction.

As a result, the guide side plate 11 and the support 4 can be securely connected.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a side view and a front view when the infant seat device 1 of the present invention is mounted on a bicycle 35. 1 and 2, the infant seat device 1 is mounted on a seat 2, a support 4 for the seat 2, a support 4 for supporting the support 4 in a rotatable manner, and a handle 36 of a bicycle 35. The mounting portion 5, the guide side plate 11 that supports the support 4 when the seat 2 is used, and follows the rotation of the support 4, and the handle 3 of the bicycle 35.
6 and a mounting means 21 for mounting on the main body 6.

The mounting portion 5 is formed by bending a hollow pipe or the like. Specifically, the upper portion of the mounting portion 5 is bent into a rectangular frame that is horizontally long when viewed from the front, and the lower portion is a bicycle. The fork 35 is bifurcated in the left-right direction, and a step 8 is attached to the lower end of each of the two forks. The grip 7 is fitted to the horizontal bar 5a formed on the upper part of the mounting portion 5 by the above-described bending, and the horizontal bar 5a and the grip 7 form the handle 6 of the infant seat apparatus 1. Become.

The mounting means 5 is provided on the front portion of the mounting portion 5 at the center in the vertical direction. The mounting means 21 includes a latch 22 for fixing the mounting portion 5 to the handle 36 and a holding portion 2 for fixing the mounting portion 5 to the stem 37 of the handle 36.
9. The latch 22 includes a hook 23 for engaging the infant seat apparatus 1 with a handle 36 of a bicycle 35, and a mounting bolt 24 for engaging the hook 23. The hook body 2
2 has a U-shape when viewed from the side of the bicycle 35 as shown in FIG. 2, and one of the U-shapes is riveted by a rivet 26 and fixed to the mounting portion 5, and the other front is A screw hole 25 for screwing the mounting bolt 24 is formed. By hooking the hook body 23 on the handle 36 and screwing the mounting bolt 24 into the screw hole 25, the mounting section 5 can be fixed to the handle 36 via the hook 22.

The hugging portion 29 is a portion to be engaged with the stem 37 of the handle 36 of the bicycle 35 in such a manner as to hug the same.
0 and a lock piece 32 at the front of the fitting recess 30 that can swing up and down around a pivot pin 31. The mounting portion 5 can be fixed to the stem 37 by fitting the stem 37 into the fitting recess 30 and hanging the lock piece 32 on the fitting recess 30. The support 4 is connected to the mounting portion 5 via a hinge portion 9 so as to be freely rotatable. The seat 2 can be folded and opened by the rotation of the support 4.

The guide side plate 11 is
Is rotatably attached to the mounting portion 5 via a connection pin 13 that is connected to the mounting portion 5. The guide side plate 11 has a guide groove 15 for guiding the movement of the guide side plate 11 in a body portion thereof, and the mounting portion 5 and the support 4 are connected via the guide groove 15. . Hereinafter, the support 4, the mounting portion 5, and the guide side plate 11 will be described.
The mutual relationship with will be described. The guide side plate 11 is formed by cutting a metal plate (preferably a steel plate or the like) into a shape similar to a "-" shaped boomerang (see FIGS. 1 and 3). A connection pin insertion hole 14 for connecting the guide side plate 11 to the mounting portion 5 is provided at one end side of the "<" character in the guide side plate 11, and the connection pin insertion hole 14 The guide side plate 11 is connected to the mounting portion 5 by connection pins 13 for connecting the mounting portion 5 and the guide side plate 11.

A rivet for riveting is adopted as the connection pin 13, and the guide side plate 11 is connected to the mounting portion 5 so as to be rotatable by using riveting. Specifically, the mounting portion 5 and the guide side plate 1
When the rivet 1 is riveted, the mounting portion 5 and the guide side plate 11 are set in the axial direction of the body of the rivet.
And a margin (gap) is provided between them. This allows
The guide side plate 11 and the mounting portion 5 are not fixed, and the guide side plate 11 can rotate about the axis of the body of the rivet.

The mounting portion 5 and the guide side plate 11
Is not limited to using the above-described riveting, but other means such as bolting may be employed. As viewed from the front of the guide side plate 11 (see FIGS. 1 and 3), the radius of curvature of the vertex of the convexly curved curve portion 27a is smaller than the radius of curvature of the vertex of the concavely curved curve portion 27b. . Thus, the width of the boomerang-shaped guide side plate 11 is not made uniform, but the width of the radius of curvature in the radial direction can be increased at the central portion of the boomerang-shaped curve. The guide side plate 11 is provided in the infant seat apparatus 1 such that a convexly curved portion faces downward of the bicycle 35. As described above, the guide side plate 11 can sufficiently secure the strength when the seat portion 2 is held.

A guide groove 15 is formed in the body of the guide side plate 11 so as to operate following the rotation of the support 4. The guide groove 15 is formed in an arc shape following the curved shape of the guide side plate 11. The arc-shaped guide groove 15 is formed along the longitudinal direction of the boomerang shape of the guide side plate 11, in other words, the guide groove 15 includes the convexly curved curve portion 27a and the concavely curved curve. Portion 27b and between which the concavely curved portion 27 is located.
It is formed closer to b. Thus, the width of the convexly curved portion 27a and the edge 15c of the guide groove 15 on the side of the convexly curved portion 27a can be made as wide as possible, and the guide groove 15 is provided. The guide side plate 11 can maintain the strength for supporting the seat portion 2.

Hereinafter, in the guide groove 15, the end on the connection pin 13 side is referred to as a folded end 15a, and the end opposite to the folded end 15a is referred to as a support end 15b. The support 4 is formed by processing a metal strip (preferably a steel plate or the like), and the support 4 and the guide side plate 11
And a guide member 16 that slides inside the guide groove 15 by connecting the guide member 15 and the guide member 15. FIG. 3 shows a state near the guide side plate 11 when the seat portion 2 is opened and used. When using the seat 2, the support end 15b
And the guide 16 come into contact with each other. Thereby, the guide side plate 11 stops the movement of the support 4 in the direction in which the seat 2 is opened, and supports the support 4.

FIG. 4 shows a state where the seat 2 is folded. In FIG. 4, the guide 16
Is in contact with the folded end 15a, and at this time, the guide side plate 11 is in a state of protruding alongside the bottom outer surface 10 of the seat 2. In this state, the support 4
Of the pivoting operation, the guide body 16 and the guide groove 15 are relatively slid by the operation in the direction in which the seat portion 2 is folded, so that the guide side plate 11 moves. Things. In other words, when the seat part 2 is folded, the guide groove 15 guides the guide side plate 11 so as to protrude behind the handle 36 of the bicycle 35, and when the seat part 2 is folded, the guide side plate 11 Will be located close to the bottom outer surface 10.

FIGS. 5 and 6 show the connection between the support 4 and the guide side plate 11. The connection will be described below. FIG. 5 shows a state of connection between the support 4 and the guide side plate 11 in the first embodiment of the present invention. In the first embodiment, a hexagonal bolt used for bolt fastening means is employed for the guide body 16, and the guide groove 15 is provided as an elongated hole penetrating the guide side plate 11. The connection between the support body 4 and the guide side plate 11 is made such that the guide body 16 passes through the guide body insertion hole 20 provided in the body of the support body 4 and the guide groove 15. Are inserted into the guide grooves 15 and the guide body insertion holes 20, and the guide bodies 16 are fixed from both sides of the guide body insertion holes 20 of the support 4 by fastening nuts 19 for fixing the guide bodies 16. By doing so, the support 4 and the guide side plate 11
And will be connected.

In this connection state, the guide 1
The hexagonal bolt 6 has a hexagonal diagonal length at its head larger than the width of the guide groove 15, so that the guide side plate 11 is moved in the longitudinal direction of the guide body 16. The slippage is prevented from coming off. In the present invention, a portion, such as the head of the hexagon bolt, that prevents the guide side plate 11 from coming off in the longitudinal direction of the guide body 16 is referred to as a lock portion 16a. As described above, the support 4 and the guide side plate 11
When the support body 4 rotates around the hinge portion 9 by the connection of the guide member 16, the guide body 16 moves the inside of the guide groove 15 in an arc shape in the guide groove 15 with this rotation. Within the range of the arc length of the groove. In addition, the guide side plate 11 rotates around the connection point connected by the connection pin 13 as the guide groove 15 slides on the guide body 16.

The guide member 16 includes the guide member 16.
A cover 28 is mounted to prevent abrasion of a contact portion between the guide body 16 and the guide groove 15 when the slider slides inside the guide groove 15. This cover body 28
Is formed in a hollow cylindrical shape by a synthetic resin or the like, and a disc-shaped flange portion 28a is formed at both ends in the cylinder center direction. The hollow portion of the cover body 28 is an insertion hole through which the guide body 16 is inserted. The guide body 16 is inserted into the insertion hole, and the lock portion 16a and the fastening nut are joined together with the flange portion 28a. 19 and the guide side plate 11 can be prevented from coming into contact with each other when the support body 4 rotates and being worn. The cover body 28 not only prevents wear as described above, but also plays a role of sliding the guide groove 15 and the guide body 16.

As described above, since the guide groove 15 is formed in an arc shape, the seat portion 2 can be folded,
When opening, the guide groove 15 and the guide body 16
The frictional force generated at the contact portion with the contact can be minimized. That is, a large resistance is not applied when the seat 2 is folded or opened. FIG.
Support 4 and guide side plate 11 in the second embodiment of the present invention
3 shows a state of connection with the control unit. In the second embodiment, a rivet is employed for the guide body 16, the head of the rivet serves as the lock portion 16a, and the guide groove 15 penetrates the guide side plate 11 as in the first embodiment. An arc-shaped slot is used.

In the second embodiment, the guide 1
As in the first embodiment, the cover 4 is attached to the support 6 via a ring-shaped spacer 34 (preferably made of metal) having an insertion hole through which the guide 16 is inserted. And the guide side plate 11 are connected using riveting. Specifically, the insertion hole of the cover body 28, the insertion hole of the spacer 34, and the guide body insertion hole 20 of the support 4 are aligned with each other so that the shaft of the guide body 16 passes, and the guide body 16 in the longitudinal direction of the guide body 16, between the lock portion 16a of the guide body 16 and the cover body 28, or between the cover body 28 and the spacer 34, or between the spacer 34 and the Riveting is performed with a margin (gap) by various methods such as interposing a spacer or the like that can be removed after riveting between the support 4 and the support.

Thus, the guide body 16 is rotatable about the axis of its body, and when the guide side plate 11 and the guide body 16 slide with each other, the guide body 16 rotates together with the slide. Will be done. FIG. 7 shows a connection state between the guide side plate 11 and the guide body 16 in the third embodiment of the present invention. In the third embodiment, the guide groove 15 does not penetrate the guide side plate 11 and is formed in the guide side plate 11 as an arc-shaped long hole along the boomerang-shaped curve of the guide side plate 11. I have. The guide body 16 employs a rivet having a disk-shaped head (locking portion 16a). The guide body 16 is connected to the support body 4 so as to be rotatable around the axis of a shaft. Have been.

When the seat 2 is folded or opened, the guide 16 rotates about the axis of the shaft of the guide 16, and the lock 16 a rotates in the guide groove 15 with this rotation. Will slide. The lock portion 16a is not limited to a disk shape, and various shapes are adopted. A shape is desirable (for example, a shape with a chamfered edge).

[0030]

The infant seat apparatus 1 of the present invention described in detail above.
Accordingly, the guide side plate 11 does not come into contact with or hit the handle 36 when the seat portion 2 is folded.

[Brief description of the drawings]

FIG. 1 is a side view when the infant seat device 1 of the present invention is mounted on a bicycle 35. FIG.

FIG. 2 is a front view when the infant seat device 1 of the present invention is mounted on a bicycle 35.

FIG. 3 is an enlarged side view of a main part of the infant seat apparatus 1 of the present invention.

FIG. 4 is an enlarged side view showing a state where the seat section 2 is folded in the present invention.

FIG. 5 shows a guide side plate 11 according to the first embodiment of the present invention.
FIG. 4 is an enlarged front view showing a connection state between the guide body 16 and the guide body 16.

FIG. 6 shows a guide side plate 11 according to a second embodiment of the present invention.
FIG. 4 is an enlarged front view showing a connection state between the guide body 16 and the guide body 16.

FIG. 7 shows a guide side plate 11 according to a third embodiment of the present invention.
FIG. 4 is an enlarged front view showing a connection state between the guide body 16 and the guide body 16.

FIG. 8 is a side view showing a conventional infant seat apparatus 41.

FIG. 9 is an enlarged side view showing a state in which the seat portion is folded in the conventional infant seat apparatus 41.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infant seat apparatus 2 Seat part 4 Support body 5 Mounting part 9 Hinge part 10 Bottom outer surface 11 Guide side plate 13 Connection pin 15 Guide groove 16 Guide body 16a Lock part 21 Mounting means 27a Convex curved part 27b Curved concavely Curved part 35 Bicycle 36 Handle

Claims (5)

[Claims] 1. An infant seat device (1) mounted on a handle (36) of a bicycle (35) so that a seat portion (2) can be folded and opened freely, comprising: a seat portion (2); A support (4) of the part (2),
The support (4) is rotatably supported, and the mounting part (5) mounted on the handle (36) and the support (4) when the seat (2) is used. And a pair of guide side plates (11) that follow the rotation of (4), wherein the guide side plates (11) are guiding grooves () for guiding the operation of following the rotation of the support (4). 15), wherein the support (4) is connected to the guide side plate (11) via a guide body (16) that slides along the longitudinal direction of the guide groove (15). The guide side plate 11 is rotatably connected to the mounting portion (5). Further, the support (4) is provided with a hinge portion (9) that allows the seat portion (2) to be folded and opened freely. (5), and the guide groove (15) folds the seat (2). A seat device for an infant, wherein the guide side plate (11) is guided so as to protrude behind the handle (36) when folded. 2. The seat according to claim 1, wherein the guide side plate is positioned so as to be close to a bottom outer surface of the seat when the seat is folded. An infant seat device as described in the above. 3. The guide side plate (11) has a boomerang shape that is curved in a U-shape, and the boomerang shape has a curved portion (27) that is convexly curved.
The curved part (27) in which the radius of curvature of the vertex of a) is concavely curved
The guide groove (15) provided in the guide side plate (11) is smaller than the radius of curvature of the vertex of (b), and the convex curved portion (27a) and the concave curved portion are provided. The infant seat device according to any one of claims 1 and 2, wherein the infant seat device is located near the curved portion (27b) curved between the concave portions (27b). 4. The infant seat apparatus according to claim 3, wherein the guide groove has an arc shape following a boomerang-shaped curve of the guide side plate. 5. The guide body (16) includes a lock portion (16a) for preventing the guide side plate (11) from coming off in the longitudinal direction of the guide body (16). The infant seat device according to claim 1.