JP2524370Y2 - Handrail mounting device for baby carriage - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a handrail to a folding baby carriage.

[0002]

2. Description of the Related Art Conventionally, a stroller is provided with a handrail (which also serves as a protective frame) in front of the torso of the infant so that the infant does not fall from the stroller.

[0003] Therefore, as shown in Japanese Utility Model Laid-Open No. 4-69282, when the handlebar is pushed down while the grip is in the middle bent state, the width of the right and left sides is automatically reduced based on the folding so that a total of four pieces are obtained. The front and rear wheels can be assembled to stand alone.

In such a type of baby carriage, a handrail is also used as a carrying hand when carrying.

[0005] The above handrail, which is also used as a handrail, is of a center-bending type, and the ends of both ends of the handrail are rotatably attached to the inner side surfaces of both armrests via pins. The upper edge of the distal end of the arm abuts against the stopper, the lower edge of the distal end of the arm is held by the holding member, the posture of the arm protruding forward is maintained, and when the baby carriage is folded, The end is released and the handrail can be turned.

When the handrail is pulled up to a substantially vertical position, the concave portion provided on the facing surface between the arm and the armrest and the projection are fitted to stop the handrail from rotating.

[0007]

When the above-described handrail mounting method is adopted, the opposing surface is brought into contact by the contact between the projection and the mating surface (arm or armrest) as the handrail is rotated in the lifting direction. When the protrusion and the recess are aligned with each other, the protrusion and the recess are fitted and engaged by the restoring force generated by the above-described spread, so that the protrusion and the recess are disengaged from each other, and the handrail is disengaged. Cannot maintain the posture in the upright state.

[0008] The cause of the disengagement is caused by a swinging movement when the baby carriage is carried. For this reason, there has been a problem that the stroller swings greatly with respect to the grasped handrail and becomes unstable.

Therefore, the present invention is designed to prevent the handrail caused by folding the stroller from rotating with respect to the armrest, that is, the stroller does not swing with respect to the handrail.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention forms a laterally open recess at the tip of a pair of left and right armrests provided on a stroller. The swing arm is rotatably supported laterally so that the tip can freely enter and exit from the recess. The tip of the swing arm has a circular recess that opens laterally, and a circular recess. A locking recess extending upward from the place is formed, and protruding shafts formed at both ends of the handrail are fitted into the circular recess, and the handrail is rotatable up and down on the tip end of the swing arm. The handrail is formed so that both ends of the handrail can be fitted from the side with the rotation of the swing arm, and the handrail is removed from the recess and turned upward. When the handrail is raised, the handrail is pulled upward to slide and fit into the locking recess. The engaging portion, formed on the projecting shaft, and constitutes a mounting arrangement in the handrail on the baby carriage.

[0011]

According to the above construction, the left and right armrests are drawn together with the folding of the baby carriage.

Then, both ends of the handrail are bent by the joints, and outward (in a direction to escape from the concave portion).
By rotating the swing arm, the terminal of the handrail is removed from the recessed portion immediately before the end of the pulling of the armrest to the end point, and the fitting relationship between the recessed portion and the terminal of the handrail is released.

The handrail, which has been released from the engagement with the recess, rotates in the upright direction around the protruding shaft fitted into the circular recess, and engages with the locking recess in the upright posture. The joints face each other. Then, when the handrail is pulled up, the protruding shaft slides upward in the circular recess, and the fitting portion fits into and engages with the locking concave portion.

Then, the rotation of the handrail with respect to the armrest is locked by this engagement.

When deploying the stroller, first, the handrail is pushed down.

Then, the protruding shaft slides downward, and the fitting portion escapes from the locking concave portion, so that the engagement relationship between the fitting portion and the locking concave portion is released, and the handrail can be rotated. Become.

Next, after pushing down the handrail toward the front,
Deploy the stroller. Then, both ends of the handrail are pushed apart as the armrests are separated, and both ends of the handrail are fitted together with the swing arm into the recessed portion as the handrail expands.

When both ends of the handrail are fitted into the recessed portions, the vertical movement of the handrail with respect to the armrest is locked.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

The stroller shown in FIG. 1 has a pair of left and right front legs 2 having a handlebar 22 attached to an upper end and a front wheel 1 at a lower end, and a pair of left and right rear legs 4 having a rear wheel 5 at a lower end.
It consists of a pair of left and right armrests 54 attached to the front leg 2, and these 2, 4, and 54 can be pulled inward by appropriate interlocking means. As shown in FIGS. 1 to 3, the stroller has two left and right parallel front legs 2 having a front wheel 1 at a lower end, and an upper end rotatable via a pin 3 at a substantially central portion between upper and lower ends of the front legs 2. Rear leg 4 attached to
A rear wheel 5 provided at the lower ends of the rear legs 4, a protruding rod 6 connected to the upper ends of the rear legs 4 and protruding forward, and a center intersection between both ends is rotatable via a pin 7. And upper and lower ends thereof are rotatably attached to upper portions of the projecting rods 6 of the front legs 2 and lower portions of the rear legs 4 via pins 8.
First opening / closing rods 9, 9, and a central intersection between both ends is rotatably supported via a pin 10, and upper and lower ends of the first opening / closing rod 9 are attached to a biprotruding rod 6 and a lower part of both front legs 2 by pins 11. And X-shaped second opening / closing rods 12, 12 rotatably mounted via the. In order to fold the stroller in the unfolded state shown in FIGS. 1 and 2, when the protruding rod 6 is pulled up (the method of raising the protruding rod 6 will be described later), the rear leg 4 rotates clockwise in FIG. The rear wheel 5 moves in the direction of the front wheel 1 and the second opening / closing
2, the lower part of the front legs 2, 2 and the protruding rods 6 of the rear legs 4, 4 are pulled inward each other.

In addition, the first opening / closing rod 9,
9 also pivots in the closing direction to draw the upper portions of the front legs 2, 2 and the lower portions of the rear legs 4, 4 inward each other, so that a total of four front wheels 1, 1 and a rear wheel are provided as shown in FIG. Collect 5 and 5 so that they can be independent.

In order to deploy the stroller that has been folded, the both projecting rods 6 should be pushed down.

The hammock (not shown) is a
The front seat 2 has both side edges supported, and the front backrests 2 are mounted on the portions above the pins 3 so as to support both side edges of the backrest.

At the upper ends of the front legs 2, a holder 21 is disposed parallel to the axis of the front legs 2, and the holder 21 is attached to the front legs 2 so as to be turned upside down.
The lower part of the handle bar 22 is supported by the holder 21 so as to freely rotate in the circumferential direction at a fixed position.

The holder 21 is located on the rear surface of the front leg 2 and has two upper and lower parallel tubular bodies 23.
Of the front leg 2 is fitted between the two forked portions 24, and the upper end of the forked portion 24 is provided with a pin 25 at the upper end of the front leg 2. It is attached so that it can rotate freely.

The lower part of the handle rod 22 is inserted into the cylindrical body 23 so as to rotate freely.

At the upper ends of both handle bars 22, there are provided grips 26 which project inward from each other and are connected so that their opposing ends can be bent toward the front.

Further, a first engagement device 27 is provided at the middle bending connection portion of the grip 26 for preventing the middle bending other than the operation.

In the connection mechanism capable of bending the grip 26, the first engagement device 27 has a predetermined vertical space on one of the opposite ends of the grips 26, 26 as shown in FIGS. It has a circular upper plate 28 and a lower plate 29 provided in parallel with each other, and an intermediate plate 30 provided on the other side so as to fit between the upper plate 28 and the lower plate 29. The upper plate 28 and the intermediate plate 30 are formed with through holes 31 and 32 which are vertically overlapped with each other and coincide with each other.
The lower plate 29 is provided with a recessed hole 33 of the upper surface opening corresponding to 2.

The two through holes 31 and 32 and the concave hole 33 are formed with concave portions 34 extending outward from the respective peripheral surfaces and facing each other. The lower shaft member 35 is fitted into the recessed hole 33 so that the upper surface and the upper surface of the lower plate 29 are flush with each other when the lower surface contacts the bottom of the recessed hole 33. On the upper surface of the lower shaft 35, an upper shaft 36 whose upper and lower surfaces are flush with the upper and lower surfaces of the intermediate plate 30 when the lower shaft 35 is pushed into the recessed hole 33 is overlapped. The outer peripheral surfaces of the lower shaft member 35 and the upper shaft member 36 are provided with the concave portions 34.
The projection 37 is provided so as to fit into the. The through hole 3
1 and 32, the projections 37 of the lower shaft 35 are fitted into the recesses 34 of the lower plate 29 and the intermediate plate 30, and the projections 37 of the upper shaft 36 are fitted into the recesses 34 of the intermediate plate 30 and the upper plate 28, respectively. As described above, the spring 38 that pushes the upper shaft member 36 and the lower shaft member 35 upward is housed. In the upper plate 28, an annular plate 4 having a through hole 39 formed at the center thereof and matching the through hole 31 is formed.
0 is fixed. A button 41 penetrates through the through-hole 39.
When the upper plate 36 and the lower shaft 35 are pushed down while compressing the spring 38, the lower plate 29 and the intermediate plate 3 are pushed.
The projection 37 of the lower shaft 35 straddling both the concave portions 34 of the lower plate 29 fits only into the concave portions 34 of the lower plate 29, and the intermediate plate 30 and the upper plate 2
The projection 37 of the upper shaft member 36 straddling both the concave portions 34 with the upper portion 8 fits only into the concave portion 34 of the intermediate plate 30 (shown in FIG. 7).

For this reason, both grips 26 are pushed forward (shown in FIG. 5) so as to be folded in the middle while the push of the button 41 is maintained while the prevention of the folding by the projection 37 is released.

When the grip 26 is bent, the upper surface of each protrusion 37 is in contact with the portion of the upper plate 28 and the intermediate plate 30 where the lower recess 34 is not present. The upward return of the upper shaft member 36 and the lower shaft member 35 by the spring 38 is prevented.

When the two grips 26 are returned to the straight state as shown in FIG. 4, the concave portions 34 and the projections 37 are aligned.
Button 41, upper shaft 36, lower shaft 3 by spring 38
5 is pushed back upward, and as shown in FIG.
Projections 37 are formed in both recesses 34 of the intermediate plate 30 and the upper plate 28,
Since the protrusions 37 of the lower shaft 35 are fitted so as to straddle the concave portions 34 of the lower plate 29 and the intermediate plate 30, respectively, the bending of the grips 26 is prevented, and the grips 26 are automatically engaged.

As shown in the figure, a protrusion 42 is provided at a position facing the lower end edge of the button 41, and when the grip 26 is in a straight state, the button 41 is rotated to move the protrusion 42 to the recess 34 of the upper plate 28. If the button 41 is pressed by mistake while the baby carriage is running or the like, it is prevented from being immersed in the recess 43 by fitting it into the recessed step 43 continuous from one end of the upper surface recess 34 of the upper plate 28 so as to be unmatched. Play a role.

The holder 21 is provided with the holder 21
Automatically engages with the front leg 2 at the end of reversal of the descent of the handlebars 22, and the handlebars 22,
A second engagement device 61 is provided that allows the front leg 2 to be turned upside down with respect to the front leg 2 by utilizing the rotational movement of the second leg 22.

The above-mentioned second engagement device 61 is shown in FIGS.
As shown in FIG. 7, a slider 63 provided in the holder 21 so as to be slid in the vertical direction by a suitable guide means, and a downward return force is applied by a spring 62 to the front leg 2.
Cylindrical engaging portion 64 provided on the upper side surface of which is opened at the upper end surface.
A locking portion 65 provided at the lower end of the slider 63 so as to be pressed tightly into the engagement portion 64 at the end of the descent of the slider 63, that is, so as not to rattle back and forth in the running direction; Is converted into a vertical movement of the slider 63, and a motion converting device 66 is provided so as to release the engagement relationship between the engaging portion 64 and the locking portion 65 immediately before the descent of the holder 21. .

In the case of the drawing, the slider 63 fits on the outside of the handlebar 22 and slides vertically between the upper and lower two cylindrical members 23, and the slider 63 While projecting forward from both sides,
A pair of left and right side plates 68 overlapping the both side surfaces of the holder 21, and a vertically long hole 69 provided on an upper portion of the both side plates 68.
, The slider 25 is guided by the handle rod 22 and the pin 25.

In the illustrated embodiment, the spring 62 is provided with an annular recessed step 70 from the upper end edge of the inner peripheral surface of the cylindrical body 67 to the middle of the lower part. The spring 62 fitted on the handlebar 22 is pushed in from above, and the lower edge of the annular body 71 fitted on the handlebar 22 is
Although the slider 63 is provided with a downward returning force in contact with the upward end surface of the slider 63, the returning force may be provided by a configuration other than the above.

Further, in the case shown in the figure, the motion converting device 66 is provided with pins 73 projecting from both side surfaces of the handlebar 22.
(The rotor is used to reduce frictional resistance)
The cylindrical body 67 has an inverted V-shape that faces upward from the lower edges on both sides thereof, and has a notch 74 into which the pin 73 is fitted. In some cases, an inverted V-shaped groove (not shown) which faces in the direction is provided, and a pin is fitted in this groove.

With the above configuration, both grips 26
4, the handle bar 22 on the left side of FIG. 4 rotates counterclockwise, and the handle bar 22 on the right side of FIG. 4 rotates clockwise, so that the pin 73 rotates together with the handle bar 22 in the same direction.

Then, the pin 73 located at the lowest position (the position shown in FIG. 6) of the notch 74 slides on the slope, and the pin 7 which has escaped from the notch 74 at the lower edge of the cylindrical body 67.
7, the cylindrical body 67 (slider 63) slides upward while compressing the spring 62, and the engaging portion 64 escapes from the engaging portion 64 with the sliding, and the engaging portion 65 engages. The engagement relationship between the portion 64 and the locking portion 65 is released.

As a result, the lifting of the holder 21 with respect to the front leg 2 is prevented from being inverted and the handlebar 22 is moved forward (FIG. 7).
(From the battle position to the dashed line position) and then push down.

When the handlebar 22 is raised and raised, and both grips 26 are in a straight line, the pin 73 which rotates together with the rotation of the handlebar 22 pushes the cylindrical body 6.
7 fits into the notch 74 from the lower edge, so that the slider 63 slides downward by the spring 62.

For this reason, the engaging portion 65 is pushed into the engaging portion 64 to be in an engagement relationship, and the holder 21 is raised and inverted, that is, the handlebar 22 is kept upright.

As shown in FIGS. 1 and 2, the lower end of the connecting rod 52 and the protruding rod 6 whose upper ends are rotatably mounted on the holder 21 via the pins 51 are connected to the armrests 54 via the pins 53. Are rotatably mounted at both ends.

The above-mentioned armrest 54 is folded as shown in FIG. 3 by raising the protruding rod 6 via the connecting rod 52 and the armrest 54 when the holder 21 is turned upside down as the baby carriage is folded.

Further, a recess 81 is formed at the tip of the armrest 54 so that the tip surface and the side face are open. The end of the swing arm 82 fitted into the recess 81 is connected to a pin 83 perpendicular to the tip of the armrest 54. Attach it rotatably.

The above recess 81 is provided in the extension member 84 in the case shown in the figure, and a piece 86 projecting from the end surface of the extension member 84 is fitted into a recess 85 provided on the distal end surface of the armrest 54, and the pin 83 Are fitted into the hole 87 of the piece 86 and the hole 88 of the armrest 54, and the extension member 84 is attached to the armrest 54, and the pivot of the swing arm 82 is fixed (the pin 83 is prevented from being removed by a set screw that is screwed in). The armrest 54 directly into the recess 8
1 may be provided.

Further, a circular recess 89 and a locking recess 90 extending upward from the peripheral surface of the circular recess 89 are provided on the inner surface of the distal end of the swing arm 82.

Reference numeral 91 denotes a handrail having two center folding joints 92 on the left and right halfway.

As shown in FIGS. 10 and 12, when the stroller is deployed, the handrail 91 is
Center rod 93 having a length of about 1/2 of the dimension of the facing interval of
And a side rod 94 rotatably connected at its ends to both ends of the center rod 93 to form a joint 92, and a tube such as a cloth that covers the center rod 93 and covers the front end of the side rod 94. And a cover 95.

The both ends of the handrail 91, that is, the ends of the side rods 94 are fitted into the recessed portions 81 to stop the vertical swing.

Also, the terminal of the handrail 91 is overlapped with the tip of the inner side surface of the rocking body 82, and a pin 96 such as a stud penetrating through the rocking arm 82 so as to be located at the center of the handrail 91 and the circular recess 89. Handrail 91 against the swing arm 82
The end of is mounted rotatably.

Further, a protruding shaft 97 rotatably fitted in the circular recess 89 is provided on the inner surface of the end of the handrail 91, and
On the outer periphery of the protruding shaft 97, a fitting portion 98 that fits into the locking concave portion 90 when the handrail 91 is upright is formed.

When the handrail 91 is raised, the pin 96 is slid in the direction of the locking recess 90 when the locking recess 90 and the fitting portion 98 face each other.
An elongated hole 111 extending in the direction of the locking recess 90 is formed at the center of the hole.

Although the fitting portion 98 is provided by the cutout portions 99 on both sides, the fitting portion 98 may be fixed to the outer periphery of the projection 97.

In the figure, reference numeral 101 denotes a concave hole in the center of the lower surface of the button 41 at the upper end, a concave hole 103 in the center of the upper surface of the lower shaft 35 at the upper end, and a hole 104 at the center of the upper shaft 36 in the middle. This is a pin that passes through.

With the above configuration, the left and right armrests 54 are drawn in with the folding of the baby carriage.

Then, both ends (side rods 94) of the handrail 91 are bent from the state shown in FIG. 10 to the state shown in FIG. 12 by the joint portion 92, and the concave portion 81 is formed while rotating the swing arm 82 outward. Then, the end of the handrail 91 escapes (as shown in FIG. 12), and the engagement between the recessed portion 81 and the end of the handrail 91 is released. As shown in FIG. 11, the handrail 91 in which the engagement relationship is released rotates upward with the fitted circular recess 89 and the protruding shaft 97 serving as a rotation fulcrum.

When the handrail 91 is stopped at a position (as shown in FIG. 13) where the handhold can be used as a hand, the locking recess 90
And the fitting portion 98 match.

When the handrail 91 is pulled up, the protruding shaft 97 slides upward in the circular recess 89, and the fitting portion 98 fits into the locking recess 90 as shown in FIG. The handrail 91 stops rotating with respect to 54. In other words, when the handrail 91 becomes a pallet and the folded baby carriage is carried, the baby carriage does not swing with respect to the handrail 91 that has become the pallet.

When deploying the stroller, first, the handrail 9
1 is depressed to disengage the fitting portion 98 from the locking concave portion 90, and then the handrail 91 is pushed down forward. At this time,
The protrusion 112 abuts on the upper edge surface of the recess 81 and the handrail 91
Stops rotating.

When the stroller is deployed, both ends of the handrail 91 are pushed and spread, and the end of the handrail 91 is fitted into the recessed portion 81 with the pushing and spreading. Movement stops.

[0064]

The stroller according to the present invention is configured as described above, so that the handrail can be turned upward with the folding of the stroller. The rotation of the handrail can be stopped by engagement with the fitting portion.

Therefore, the baby carriage does not swing with respect to the handrail when it is carried.

Further, when the baby carriage is deployed, the end of the handrail is fitted into the recessed portion to stop the handrail from rotating with respect to the armrest (in the vertical direction), so that a separate locking mechanism is not required.

[Brief description of the drawings]

FIG. 1 is a side view of a baby carriage according to the invention.

FIG. 2 is a rear view of the above.

FIG. 3 is a side view of a folded state.

FIG. 4 is a partially cutaway enlarged plan view of a grip.

FIG. 5 is a plan view showing the folding in the above.

FIG. 6 is a longitudinal sectional side view showing an engagement device.

FIG. 7 is a vertical cross-sectional side view showing the same disengaged.

FIG. 8 is an exploded perspective view of the first engagement device.

FIG. 9 is an exploded perspective view of the second engagement device.

FIG. 10 is a partially cutaway plan view of a handrail.

FIG. 11 is a longitudinal sectional side view showing a fitting between a circular recess and a protruding shaft.

FIG. 12 is a partially cutaway plan view in which a handrail is bent.

FIG. 13 is a longitudinal sectional side view showing engagement between a fitting portion and a locking concave portion.

FIG. 14 is an exploded perspective view of the above.

[Explanation of symbols]

 Reference Signs List 1 front wheel 2 front leg 3, 7, 8, 10, 11, 25 pin 4 rear leg 5 rear wheel 6 projecting rod 9 first opening / closing rod 12 second opening / closing rod 21 holder 22 handle rod 23 cylindrical body 24 bifurcated piece 26 grip 27 first engaging device 54 armrest 61 second engaging device 81 concave portion 82 swing arm 83 pin 89 circular concave portion 90 locking concave portion 91 handrail 92 joint portion 96 pin 97 protruding shaft 98 fitting portion 111 long hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of left and right armrests provided on a baby carriage.
At the tip, a recessed part that opens to the side is formed, and this recessed part is formed.
And a swing arm so that the tip can freely enter and exit from the recess.
Is pivotally supported to the side, and the tip of this swing arm
A circular recess opening laterally, and upward from the circular recess.
And a locking recess extending into the circular recess.
Insert the protruding shafts formed at both ends of the
Attach to the end of the moving arm so that it can rotate up and down.
Of the handrail with the rotation of the swing arm.
Formed so that it can be fitted from
Remove the handrail and rotate it upright.
And pull it up to slide
A handrail mounting device for a stroller in which a fitting portion fitted to a stop recess is formed on the protruding shaft .