JP4545278B2 - stroller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stroller in which a baby seat is detachably attached to a stroller body.
[0002]
[Prior art and problems to be solved by the invention]
In general, in baby strollers used when taking infants outdoors for walks, shopping, etc., the rear is folded as necessary to facilitate storage and carrying, and the rear surface is pushed from the infant's back. Various types of face-to-face state where the user is in a state of pressing or in a hand-held state where the user has faced an infant have been proposed and put into practical use.
[0003]
By the way, in order for the baby seat to be in the back state or the face-to-face state, the hand pusher of the stroller is swung in the front-rear direction of the seat plate so that the hand pusher is moved to the rear or front of the baby body. However, in such a case, when it is in a face-to-face pressed state, the direction-changing wheel is located rearward with respect to the traveling direction of the stroller, and the traveling cannot be performed smoothly. There are some problems.
[0004]
Therefore, the baby seat on which the infant rides can be freely attached to and removed from the stroller body so that the baby seat can be selectively changed to the facing state or the back state, and the armrest of the baby seat is pinned and hooked to the stroller body The one that is locked by means of, for example, has been proposed.
[0005]
However, in the case where the above-mentioned locking mechanism is provided on the armrest, from the viewpoint of the user of the stroller, it is easy to see and operate, but since the lock can be easily released, the lock is inadvertently released. There is a problem such as possible.
[0006]
In view of these points, the present invention makes it difficult or impossible to operate the unlocking lever when an infant is on the baby seat, and the unlocking is performed carelessly. The purpose is to obtain a stroller that prevents the problem from occurring.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a stroller in which a baby seat is detachably attached to the stroller body, and a lock release lever for releasing the lock between the baby seat and the stroller body is provided on the lower surface of the seat plate of the baby seat. It is provided.
[0008]
The invention according to claim 2 is the invention according to claim 1, wherein the lock release lever can be advanced and retracted along the lower surface of the seat plate of the baby seat, and the stroller body is located at one end of the lock release lever at the retracted position. The hook member engaged with the stay which connects right and left of is provided.
[0009]
The invention according to claim 3 is the invention according to claim 2, wherein when the lock release lever is operated so that the hook of the hook member is detached from the stay connecting the left and right of the stroller body, An unlocking prevention piece is provided which is operated so as to protrude upward from the surface of the baby seat.
[0010]
The invention according to claim 4 is the invention according to claim 1 or 2, wherein the seat plate of the baby seat is provided with a lock release preventing pin biased so as to protrude upward from the surface of the seat plate, The unlocking lever is formed with an opening into which the lower end of the unlocking prevention pin can be inserted when the baby seat is locked.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In FIG. 1, reference numeral 10 denotes a stroller body, which includes a pair of left and right front legs 12 having a front wheel 11, a pair of left and right rear legs 14 having a rear wheel 13, a hand barb 15 bent substantially in a U shape, and a pair of left and right legs. The armrest rod 16 and the front side connecting member 17 that also serves as a footrest plate. One end of an armrest rod 16 is pivotally attached to each of the left and right front portions of the hand barb 15, and a front leg 12 is pivotally attached to the other end portion of each armrest rod 16. The left and right rear legs 14 are pivotally attached to the armrests 16 at their upper ends, and a locking piece 15a provided at the middle of the left and right rear legs 14 so as to be able to move forward and backward is engaged and disengaged. It is possible. On the other hand, the left and right rear legs 14 are connected by a rear connecting member 18, and the left and right front legs 12 are connected to each other by the front connecting member 17. Further, the front end of the connecting bar 19 is pivotally attached to the middle portion of each front leg 12, and the rear end of the connecting bar 19 is an L-shaped bracket 20 having both ends pivotally attached to the hand bar 15 and the rear leg 14, respectively. It is pivotally attached to the middle part.
[0012]
As shown in FIG. 1, the stroller body 10 is held in a usable state by locking the locking piece 15 a at the tip of the hand pusher 15 to the middle part of the rear leg 14. When the engaging piece 15a at the tip of the hand bar 15 is disengaged from the rear leg 14 by operating the operating device A provided on the arm 15, the armrest bar 16, the front leg 12, and the rear leg 14 are disengaged. , And the connecting bar 19 can swing, and can be folded for convenience of carrying.
[0013]
By the way, the baby seat 21 is mounted and fixed to the stroller body 10 by placing the armrest portion 22a of the baby seat 21 on the armrest 16 from above. In this case, by selectively mounting the baby seat 21 in the stroller body 10 in the front-rear direction, it is possible to obtain a hand-pressed state from the back of the infant or a face-to-face pressed state. FIG. 2 shows a hand-pressed state from the back, and FIG. 3 shows a hand-pressed state facing each other.
[0014]
FIG. 4 is a diagram showing a schematic configuration of the baby seat 21. The baby seat 21 is mainly composed of a seat plate 22 on which an infant sits, a back plate 23 that holds the back, and a headrest 24 that protects the head. .
[0015]
Armrests 22a are integrally formed on both sides of the seat plate 22, and an arcuate guard arm 25 is detachably suspended between the distal ends of the left and right armrests 22a. That is, the front end portions of the left and right armrest portions 22a are each provided with a protruding portion 22b that protrudes upward, and concave portions (not shown) formed on the lower surfaces of both ends of the guard arm 25 are formed on the protruding portion 22b. Is engaged.
[0016]
Further, a foot support plate fixture 26 is attached to the front edge portion of the seat plate 22 so as to be able to advance and retreat, and the seat plate 22 is attached to the rear edge portion of the seat plate 22 as shown in FIGS. The lower end portion of the back plate 23 is pivotably mounted by a horizontal shaft 28 mounted on brackets 27 erected on both sides. The back plate 23 can be fixed to a plurality of inclined positions with respect to the seat plate 22 according to the infant's condition by a fixing device (not shown). A headrest 24 is pivotally attached to the upper end portion of the back plate 23 by a horizontal shaft 29 so as to be swingable.
[0017]
A shaft 30 extending along both side edges of the back plate 23 is provided on both sides of the back plate 23, and one end of the shaft 30 is provided with a pin 31 on a bracket 27 erected on the seat plate 22. The other end of the shaft 30 is pivotally attached to the side surface of the headrest 24.
[0018]
A cylindrical portion 32 a formed at the base end of the side plate 32 is slidably and rotatably fitted to the shaft 30, and a pin 33 protruding from the shaft 30 is connected to the side 30. It is engaged with a spiral guide groove 34 formed in the cylindrical portion 32 a of the plate 32. The side plate 32 is in a vertical state when the baby seat 21 is in use, that is, until the back plate 23 is substantially horizontal with the seat plate 22 from a certain tilt angle position. Further, one end of a restriction shaft 35 is mounted to the end of the cylindrical portion 32 a of the side plate 32 so as to be swingable to some extent, and the other end of the restriction shaft 35 is connected to the side plate of the seat plate 22. The shaft 30 is pivotably attached to a position a near the back plate 23 from the position of the pin 31 which is a pivot point of the shaft 30.
[0019]
Thus, when the back plate 23 is rotated so as to be folded around the horizontal axis 28 toward the seat plate 22, the shaft 30 rotates about the pin 31 together with the side plate 32 accordingly. However, in this case, since the pin 31 and the pivot position a of the restriction shaft 35 are displaced forward and backward, the side plate 32 is slid in the axial direction with respect to the shaft 30 via the restriction shaft 35, and the pin 33 And the guide groove 34 are engaged to rotate the side plate 32 from the vertical state to the substantially horizontal state (see FIG. 6, two-dot chain line).
[0020]
Therefore, when the back plate 23 is rotated so as to be folded toward the seat plate 22, the folding position of the back plate 23 is not restricted by the height of the side plate 32, and can be folded compactly. . FIG. 7 shows the baby sheet folded. FIG. 8 shows an example of a state in which the stroller with the baby seat 21 as described above is folded on the stroller body 10.
[0021]
By the way, as shown in FIG. 1 etc., the baby seat 21 is mounted on the stroller body 10 by placing and engaging the armrest portion 22a of the baby seat 21 on the armrest 16 of the stroller body 10. The outer surface of the armrest 16 provided in the main body is provided with a concave portion 40 having a lower end edge formed in an arc shape at the upper portion, and the concave portion 40 of the armrest portion 22a of the baby seat 21 is provided in the concave portion 40. The outer plate formed in a shape corresponding to the above is engaged.
[0022]
Further, left and right upper end portions of a pipe-like stay 41 bent in a U-shape are fixed to the left and right armrest rods 16 of the stroller body 10, respectively. On the other hand, on the lower surface of the seat plate 22 of the baby seat 21, at least one plate-like locking member 43 having a lower end opened and formed upward is formed.
[0023]
Thus, when the baby seat 21 is attached to the stroller body 10, when the baby seat 21 is lowered relative to the stroller body 10, the outer plate of the armrest portion 22 a is guided and engaged with the recess 40 of the armrest 16. The seat 21 is easily placed at a predetermined position of the stroller body 10. At the same time, the groove 42 of the locking member 43 provided on the lower surface of the seat plate 22 is fitted into the stay 41 that connects the left and right armrest rods 16 of the stroller body 10, and the seat 41 is seated by the lower horizontal portion of the stay 41. A plate 22 is supported.
[0024]
By the way, in this embodiment, as described above, the armrest 22a of the baby seat 21 is placed and engaged with the armrest 16 of the stroller body 10, and the latch provided on the lower surface of the seat plate 22 is engaged. Since the groove 42 of the member 43 is engaged with the stay 41, the baby seat 21 is prevented from rotating even when an infant is on the back plate 23 of the baby seat 21. Accordingly, the baby seat 21 is rotated together with the unlocking to fall off the stroller body, and it is reliably prevented that the infant falls from the stroller.
[0025]
FIGS. 9 and 10 are views showing a locking device for the baby seat 21, and the lower surface of the seat plate 22 of the baby seat 21 is engaged with and disengaged from a stay 41 that connects the left and right armrest rods 16 of the stroller body 10. A hook member 50 is provided. That is, the hook member 50 is pivotally attached to the seat plate 22 by the horizontal shaft 51. One end of the hook member 50 is integrally provided with a hook 50 a that engages with the stay 41, and the other end side is upward from an opening 52 formed in the seat plate 22 by swinging of the hook member 50. An unlocking prevention piece 50b that protrudes or is located at the same surface position as the seat plate is integrally formed.
[0026]
On the lower surface side of the seat plate 22, as shown in FIGS. 9 and 10, there is provided a plate-like lock release lever 54 that is supported by a guide piece 53 and can be moved forward and backward by being guided by the guide piece 53. Boss 55 is provided on both sides of the tip of the unlocking lever 54, and a pin 56 protruding from the vicinity of the hook 50a of the hook member 50 is fitted into the boss 55.
[0027]
Further, as shown in FIG. 10, a spring receiver 57 is provided at the rear end portion of the lock release lever 54, and between the spring receiver 57 and the spring receiver 58 provided on the seat plate 22. A spring 59 is interposed. The lock release lever 54 is always urged by the spring 59 so as to be in the retracted position (solid line position in FIG. 9), and the hook 50 a is held in a state of being engaged with the stay 41.
[0028]
When the lock release lever 54 is pulled against the spring 59 as shown by a two-dot chain line in FIG. 9, the hook member 50 swings around the horizontal shaft 51 in the clockwise direction in FIG. Is detached from the stay 41 and the lock is released. Therefore, the baby seat 21 can be removed from the stroller body 10 by lifting the baby seat 21 upward.
[0029]
By the way, when the hook member 50 is swung by the lock release lever 54 as described above, the lock release preventing piece 50b is also swung as shown by a two-dot chain line in FIG. 9, and protrudes upward from the upper surface of the seat plate 22. .
[0030]
Therefore, in the state where the infant is on the seat plate 22 of the baby seat 21, the weight of the infant prevents the unlocking prevention piece 50b from swinging, making it difficult for the unlocking lever 54 to be pulled. It becomes difficult to unlock the vehicle while riding 21. Therefore, when the baby is on the baby seat 21, the user carelessly releases the lock and lifts the baby seat 21, thereby avoiding the danger of the infant falling from the baby seat 21. .
[0031]
Further, when the baby rides on the baby seat 21, the lock release preventing piece 50b is actuated so as to swing to the position indicated by the solid line in the figure. Therefore, when the hook 50a is not completely engaged with the stay 41, that is, the lock is incomplete, the hook 50a is operated in the lock direction by the weight of the infant and the lock is completely performed. Can be improved.
[0032]
FIG. 11 is a view showing another embodiment of the lock release prevention device. The seat plate 22 is provided with a lock release prevention pin 60 attached to the seat plate 22 so as to be movable up and down. The seat plate 22 is formed with a recess 61 into which the unlocking prevention pin 60 is inserted, and between the bottom surface of the recess 61 and the flange member 62 provided at the top end of the unlocking prevention pin 60. A spring 63 is interposed, and the lock release prevention pin 60 is urged upward.
[0033]
On the other hand, the lock release lever 54 is formed with an opening 64 into which the lower end of the lock release prevention pin 60 can be inserted when the hook 50a is engaged with the stay 41, that is, in the locked state.
[0034]
When the baby is not on the seat plate 22 of the baby seat, the lock release prevention pin 60 is projected upward from the surface of the seat plate 22 by the spring 63 as shown by a two-dot chain line. The lower end portion of the release preventing pin 60 is in a state of coming out of the opening 64 of the lock release lever 54. Therefore, the lock release lever 54 is freely movable and can be arbitrarily locked and unlocked by the hook 50a. On the other hand, when the infant gets on the seat plate 22, the unlocking prevention pin 60 is pressed down against the spring 63 by the weight of the infant and the tip thereof is inserted into the opening 64 of the unlocking lever 54. Therefore, the movement of the lock release lever 54 is restricted, the hook 50a is not detached from the stay 41, and the lock release is prevented. Therefore, the baby seat 21 cannot be lifted from the stroller body 10 together with the infant, and safety for the infant can be achieved.
[0035]
By the way, as described above, the cylindrical protrusion 22b is integrally provided at the tip of the armrest 22a, and the recess of the guard arm 25 is engaged with the protrusion 22b. As shown in FIG. A metal cap 65 is fitted to the protrusion 22b. A locking member 66 provided on the protrusion 22b is urged by a spring 67 so as to partially protrude laterally from the outer surface of the cap 65, and the locking member 66 is engaged with the guard arm 25. It engages with a stop recess (not shown) to prevent the guard arm 25 from falling off. Thus, the protrusion 22b is reinforced by the cap 65, and damage to the protrusion 22b at the attachment portion of the locking member 66 or the like can be reliably prevented.
[0036]
【The invention's effect】
As described above, in the stroller in which the baby seat is detachably attached to the stroller body, the present invention is a lock release lever for releasing the lock between the baby seat and the stroller body on the lower surface of the seat plate of the baby seat. Therefore, when the infant is on the seat plate, the operation of the lock release lever is relatively troublesome, and the possibility of erroneous operation can be eliminated. In addition, in the case where an unlocking prevention piece or an unlocking prevention pin is provided, when the infant is on the seat plate, the unlocking lever is difficult or completely blocked by its weight, and unlocking is not possible. It is possible to prevent such a situation from being performed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a stroller according to the present invention.
FIG. 2 is a view showing a state in which the baby seat is attached to the stroller body in the back state.
FIG. 3 is a view showing a state in which a baby seat is attached to a stroller body in a facing state.
FIG. 4 is a perspective view showing a configuration of a baby seat according to the present invention.
5 is a view showing a configuration of a mounting portion of a side plate of the baby seat shown in FIG. 4;
FIG. 6 is a schematic configuration and operation explanatory diagram of a baby seat.
FIG. 7 is a perspective view showing a state where the baby seat is folded.
FIG. 8 is a view showing a state after the stroller with the baby seat attached is folded.
FIG. 9 is a view showing a device for locking a baby seat to a stroller body.
10 is a plan view showing one half of the unlocking lever portion in the locking device shown in FIG. 9;
FIG. 11 is a diagram showing another example of the lock release prevention device.
FIG. 12 is a cross-sectional view showing an example of a guard arm mounting protrusion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Stroller body 16 Armrest cage 21 Baby seat 22 Seat plate 22a Armrest portion 23 Back plate 41 Stay 42 Groove 43 Locking member 50 Hook member 50a Hook 50b Unlocking prevention piece 54 Unlocking lever 60 Unlocking pin 65 Metal cap

Claims (3)

In the stroller that is designed to detachably attach a baby seat to the stroller body,
A lock release lever that unlocks the baby seat and the stroller body is provided on the lower surface of the baby seat .
The unlocking lever can be moved back and forth along the lower surface of the seat plate of the baby seat, and one end of the unlocking lever is provided with a hook member that engages with a stay that connects the left and right of the stroller body at the retracted position.
The hook member is a lock that is actuated to protrude upward from the surface of the seat plate of the baby seat when the lock release lever is operated so that the hook of the hook member is detached from the stay that connects the left and right of the stroller body. A stroller characterized in that a release prevention piece is provided . In the stroller that is designed to detachably attach a baby seat to the stroller body,
A lock release lever that unlocks the baby seat and the stroller body is provided on the lower surface of the baby seat.
The baby seat is provided with a lock release prevention pin that is biased so as to protrude upward from the surface of the seat plate, and the lock release lever is provided with the lock release prevention pin when the baby seat is locked. A stroller characterized in that an opening into which the lower end of the can is inserted is formed . The lock release lever can be moved back and forth along the lower surface of the seat plate of the baby seat, and one end of the lock release lever is provided with a hook member that engages with a stay that connects the left and right of the stroller body at the retracted position. The stroller according to claim 2, wherein

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