JP5953123B2 - Push-bar sliding baby carriage - Google Patents

Description

  The present invention relates to a baby carriage to which a push bar is slidably attached along a front leg.

  The push bar is slidably mounted along the front leg, and the upper end area of the push bar extends to a position extending upward from the front leg in the unfolded state, and the upper end area of the push bar slides downward in the folded state to the front leg. Foldable baby carriages that are in overlapping positions are popular. As such a baby carriage, for example, one described in Japanese Patent Application Laid-Open No. 2009-120182 (Patent Document 1) is known.

  In the baby carriage described in Patent Document 1, the fabric constituting the seat is suspended on a pair of left and right body frames like a hammock. More specifically, the back portion of the seat is attached to the upper end region of the push rod extending upward from the front leg, and the seat portion of the seat is attached to the seat support rod extending in the front-rear direction.

JP 2009-120182 A

  However, the present inventors have found that there is a point to be further improved in the push rod slide type baby carriage as described above. That is, the front end portion of the seat support rod is rotatably connected to the central portion of the front leg via the pivot. When the baby carriage is folded, the seat support bar approaches the front leg about the pivot, and the push bar slides downward along the front leg. For this reason, it approaches so that the upper end area | region of a push bar and a seat support bar may gather toward a front leg.

  More specifically, in the deployed state, the upper end region of the push rod to which the seat back portion of the seat is attached is located above the seat support rod to which the seat portion of the seat is attached. On the other hand, in the folded state, the upper end region of the push rod approaches the seat support rod and the seat seat is compressed. That is, when the push rod slides downward along with the folding operation, the seat becomes a resistance to the folding operation.

  Then, the baby carriage operator must apply a force to the push rod to compress the seat when the baby carriage is folded. For this reason, when the baby carriage is folded, a force for compressing the seat is required, which imposes a burden on the operator of the baby carriage.

  In view of the above circumstances, an object of the present invention is to provide a push rod slide baby carriage that can be folded with a small force without the need to compress a seat.

For this purpose, the push-rod slide baby carriage according to the present invention is a baby carriage that is folded with a reduced size in the vertical direction , the front-rear direction , and the width direction, and a pair of front legs that extend in the vertical direction and a vertical direction that extends in the vertical direction. A pair of rear legs whose upper ends are pivotably connected to the upper ends of the front legs, and a pair which extends vertically and has a lower end region slidably connected to the front legs and an upper end region extending further upward than the front legs. And a pair of seat support rods extending in the front-rear direction and having a rear end portion rotatably connected to the rear leg and a front end region or an intermediate region rotatably connected to a lower end region of the push rod And a seat seat disposed between the pair of push rods and between the pair of seat support rods and attached to the upper end region of the push rod and the seat support rod, and a pair of rear legs so as to be slidable. A pair of slurs The upper end of the bar member is pivotably connected to the pair of slide members, and the lower end of the bar member is pivotable to the pair of rear legs, respectively. Including a frame member that connects the back cross member, the seat support bar, and the slide member connected to each other, holds the seat support bar non-rotatably with respect to the rear leg in the unfolded state of the baby carriage, and when the baby carriage is folded An unfolded state locking mechanism for releasing the connection between the seat support rod and the slide member ;

  According to the present invention, when the baby carriage is folded from the unfolded state to the folded state, the front end of the seat support rod moves downward together with the push rod, and the lower end region of the push rod approaches the seat support rod. The upper end region of the bar is kept away from the seat support bar. Therefore, the seat seat attached to the upper end region of the push rod and the seat support rod is not compressed in the folded state and does not become a resistance when the baby carriage is folded.

The foldable baby carriage is provided with a lock mechanism for holding the unfolded state in order to prevent the body frame from being accidentally folded. The present invention includes an unfolded state locking mechanism that holds the seat support rod in a non-rotatable manner with respect to the rear leg. According to the present invention , since the triangle is formed so as not to be deformable by the push rod, the seat support rod, and the rear leg, it is possible to prevent the seat support rod from rattling in the unfolded state. Therefore, rattling of the seat is prevented and riding comfort is improved. As another embodiment, a deployment state lock mechanism may be provided in another frame member to restrict relative movement or relative rotation of the two frame members.

  As a preferred embodiment of the present invention, the unfolded state locking mechanism is a frame member whose one end is rotatably connected to the seat support bar and the other end is detachably connected to the rear leg. According to this embodiment, the unfolded state locking mechanism can be provided in the rear space of the seat. Then, the rotation angle between the seat support bar and the rear leg is securely fixed. As another embodiment, one end of the frame member may be detachably connected to the seat support bar, and the other end may be rotatably connected to the rear leg.

The present invention includes two bar members intersecting in an X shape, the upper ends of the bar members are pivotally connected to a pair of slide members, and the lower ends of the bar members are pivotable to a pair of rear legs. comprising a rear cross member which is it connected to. According to the present invention , the push-bar slide baby carriage can be reduced in the width direction, and the push-bar slide baby carriage can be folded further smaller. As another embodiment, the pair of rear legs may be connected by a frame member that does not reduce in the width direction.

  Thus, according to the present invention, the operator of the baby carriage can easily fold the baby carriage with less force than before without compressing the seat when the baby carriage is folded. Therefore, the operator can perform the folding operation with one hand, and the operability is improved.

It is a side view which shows the push rod slide type baby carriage which becomes one Embodiment of this invention. It is a rear view which shows the vehicle body frame of a baby carriage. It is a side view which shows typically the baby carriage of the folded state. It is a rear view which shows the body frame of a folded state. It is a side view which shows a deployment state locking mechanism. It is a side view which shows the cancellation | release state of a deployment state locking mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a push rod slide baby carriage according to an embodiment of the present invention. FIG. 2 is a rear view showing the body frame of the baby carriage. 1 and 2 show the deployed state of the baby carriage. FIG. 3 is a side view schematically showing the stroller in a folded state. FIG. 4 is a rear view showing the vehicle body frame in a folded state.

  As apparent from the comparison between FIG. 1 and FIG. 3, the baby carriage is folded by reducing the size in the vertical direction and the width direction. The baby carriage includes a pair of front legs 11, a pair of rear legs 14, a pair of push bars 15, a pair of handle members 16, a pair of seat support bars 17, and a back cross member as main components of the body frame. 18 and a frame member such as a bottom cross member 19.

  Each front leg 11 is a linear bar extending in the vertical direction, has a front wheel 11w at its lower end, and a connecting member 12 at its upper end. The connecting member 12 is fixed to the front leg 11, has a cylindrical body 12a on the front side thereof, and has an overhanging portion 12b on the rear side. As shown in FIG. 1, the lower ends of the pair of front legs 11 are connected by a leg rest member 26 that can be bent at the central portion. When the baby carriage is opened, the footrest member 26 extends substantially linearly along the width direction.

  Each rear leg 14 is a linear bar extending in the vertical direction, and has a rear wheel 14w at the lower end thereof. The upper end portion of each rear leg 14 is rotatably connected to the overhanging portion 12 b of the connecting member 12. The rear leg 14 is opened at a predetermined angle with respect to the front leg 11 in the deployed state of the baby carriage. Each rear leg 14 rotates in a direction approaching each front leg 11 in accordance with the folding operation of the baby carriage. In the folded state shown in FIGS. 3 and 4, each rear leg 14 and each front leg 11 are positioned in a parallel relationship. The rear wheel 14w is located above the front wheel 11w.

  Each push bar 15 is a linear bar extending in the vertical direction. In the unfolded state of the baby carriage, the lower end region of each push bar 15 is arranged so as to overlap the front leg 11, and the upper end region of each push bar 15 extends upward from the upper end of the front leg 11. The push rod 15 is slidably held by the cylindrical body 12a of the connecting member 12. Each push bar 15 slides downward on each front leg 11 with the folding operation of the baby carriage, and the lower end of each push bar 15 comes into contact with the ground G in the folded state shown in FIG. The folded baby carriage can stand on its own by the lower end of the push rod 15 in contact with the ground G and the front wheel 11w. A guide sleeve 13 is fixedly attached to the lower end region of each push rod 15. The guide sleeve 13 has a cylindrical body 13a on the rear side thereof, and has an overhanging portion 13b that protrudes inward in the width direction. The front leg 11 is slidably held on the cylindrical body 13a. The overhanging portion 13b supports the front end region or the intermediate region of the seat support rod 17 via the pivot 32 so as to be rotatable.

  A handle member 16 extends from the upper end of each push bar 15. The pair of handle members 16 bend and extend forward from the upper end of the push rod 15. For this reason, the push rod 15 and the handle member 16 are formed in a substantially L shape as a whole.

  A pair of slide members 21 are slidably attached to the upper end region of each rear leg 14. As shown in FIGS. 2 and 4, two upper ends of the back cross member 18 are rotatably connected to the pair of slide members 21. The back cross member 18 is obtained by crossing two bars in an X shape and connecting the intersections with each other by a pivot. The two lower ends of the back cross member 18 are rotatably connected to the lower ends of the pair of rear legs 14. In this manner, the rear cross member 18 is installed on the pair of rear legs 14, and the two upper ends of the rear cross member 18 are slidably supported by the pair of rear legs 14.

  The bottom cross member 19 includes a first bar member and a second bar member that intersect in an X-shape, and the front end portions thereof are rotatably connected to the lower end portions of the pair of push rods 15, respectively. The portions are respectively connected to the intermediate region of the pair of rear legs 14 so as to be rotatable.

  The pair of seat support rods 17 extend in the front-rear direction, and the front end region or intermediate region thereof is rotatably connected to the lower end region of the push rod 15 and the rear end portion thereof is rotatably connected to the rear leg 14. Has been. A bracket 17 b is fixed to the rear end region of the seat support rod 17. One end of a frame member 33 extending in the front-rear direction is rotatably connected to the bracket 17b. The other end of the frame member 33 is detachably connected to the rear leg 14. Specifically, the other end of the frame member 33 is detachably connected to the slide member 21 attached to the rear leg 14, and the frame member 33, the rear end region of the seat support rod 17, and the rear leg 14 The intermediate area forms a triangle. The triangle is held indeformable in the deployed state of the baby carriage. Thus, the frame member 33 and the slide member 21 constitute a first deployed state lock mechanism.

  5 and 6 are side views showing the first unfolded state locking mechanism. FIG. 5 shows the locked state, and FIG. 6 shows the unlocked state. In the unfolded state, the frame member 33 is installed on the seat support rod 17 and the rear leg 14 as shown in FIG. 5, and the relative movement of the two frame members 14 and 17 is restricted. The frame member 33 extends in the front-rear direction above the seat support rod 17. A torsion spring 34 is contracted between one end of the frame member 33 and the seat support rod 17. The torsion spring 34 is supported by the bracket 17b and biases the frame member 33 upward.

  A notch 35 is formed at the other end of the frame member 33. The notch 35 has a shape opened upward, and can be engaged with a protrusion 21 p formed on the slide member 21. This engagement is maintained by the biasing force of the torsion spring 34. As a result, the frame member 33 is connected to the rear leg 14. When the frame member 33 is pushed down against the biasing force of the torsion spring 34, the engagement is released and the frame member 33 is separated from the rear leg 14.

  As shown in FIG. 1, a cloth seat sheet 31 is attached to the pair of push rods 15 and the pair of seat support rods 17. The seat 31 includes an upper end 31a, a backrest 31b that extends downward from the upper end 31a to support the infant's back, and a seat 31c that supports the buttocks and thighs of the infant by connecting to the lower end of the backrest 31b. These are hammock-like sewing products in which the upper end portion 31a, the backrest portion 31b, and the seat portion 31c are continuous. The upper end portion 31a of the seat 31 is spanned over the upper end region of the pair of push rods 15, the seat portion 31c is spanned over the front end region of the pair of seat support rods 17, and the backrest portion 31b is seated from the upper end portion 31a. It extends to the part 31c. In this embodiment, the upper end portion 31 a is disposed above the cylindrical body 12 a in the push rod 15. More specifically, the upper end portion 31 a is attached to the upper end portion of the push rod 15. The front end of the seat support rod 17 protrudes forward from the push rod 15, the central portion of the seat support rod 17 is located behind the push rod 15, and the seat portion 31 c Attached to the front end and the center part, respectively.

  Returning to the description of the back cross member 18, in the upper end region of the back cross member 18, a second deployed state lock mechanism that fixes the crossing angle between the first bar and the second bar in the deployed state of the baby carriage. 22 is provided. The deployed state locking mechanism 22 includes a first link bar 22m having one end rotatably connected to the second bar, and a second link bar 22n having one end rotatably connected to the first bar. And an operation member 24. The other end of the first link rod 22m and the other end of the second link rod 22n are connected to each other via a pivot 23, and the first link rod 22m and the second link rod 22n extend in the width direction as a whole. An operation member 24 is further connected to the pivot 23. The operation member 24 is supported by the pivot 23 via the hinge 25 and is in an upward posture or a downward posture.

  In the deployed state of the baby carriage, the first link bar 22m and the second link bar 22n are fixed at a position slightly beyond the thought point, and the crossing angle between the first bar and the second bar is determined. Fix it. When the baby carriage is to be folded, the operation member 24 is pulled up by hand as indicated by an arrow in FIG. Then, as shown in FIG. 4, the first link bar 22m and the second link bar 22n are bent upward.

  The folding operation of the push rod slide baby carriage according to this embodiment will be described.

  First, the operator of the baby carriage separates the other end of the frame member 33 from the slide member 21 to release the first deployed state lock mechanism. Then, the seat support bar 17 can be rotated with respect to the rear leg 14. Next, the operation member 24 is pulled up as described above to release the second deployed state lock mechanism. Thereby, each frame member which is a component of a body frame is made rotatable. Subsequently, when the operator of the baby carriage further pulls up the operation member 24 while pressing the handle member 16 downward, each slide member 21 slides upward on each rear leg 14, and as shown in FIG. 18 is reduced in the width direction. At the same time, each frame member rotates or slides as described below, and the baby carriage changes from the expanded state to the folded state.

  That is, when the baby carriage is folded, when the operator presses the handle member 16 downward, the push bar 15 slides downward as indicated by an arrow in FIG. Further, the seat support rod 17 rotates counterclockwise in FIG. 1, and the angle between the seat support rod 17 and the push rod 15 decreases, and the angle between the seat support rod 17 and the rear leg 14 increases. Therefore, the baby carriage is changed from the unfolded state of FIG. 1 to the folded state of FIG. In the folded state, the seat support bar 17 is positioned along the inner side in the width direction of the lower end region of the push bar 15.

  When the baby carriage is folded, the front end portion of the bottom cross member 19 connected to the lower end portion of the push rod 15 also moves downward following the downward movement of the push rod 15, and accordingly, the rear end of the bottom cross member 19. The pair of rear legs 14 connected to the part is rotated toward the front legs 11. As the amount of downward movement of the lower end portion of the push rod 15 increases, the distance between the front end portion and the rear end portion of the bottom surface cross member 19 increases, and therefore the bottom surface cross member 19 shrinks in the width direction.

  In the folded state of the baby carriage, the footrest member 26 is bent into a V shape. Since the seat sheet 31 is a sewn product made of fabric, it can be bent and bends following the sliding movement of the push bar 15 and the rotation of the seat support bar 17 when folded.

  As described above, each frame member of the push rod slide baby carriage slides and rotates by the folding operation, and the push rod slide baby carriage is reduced in the width direction, the front-rear direction, and the vertical direction. When unfolding the stroller in a folded state, an operation opposite to the above-described operation is performed.

  According to the present embodiment, the seat support rod 17 extends in the front-rear direction, the rear end portion thereof is rotatably connected to the rear leg 14, and the front end region or the intermediate region of the push rod 15 via the pivot 32. The lower end region is pivotally connected. The seat 31 is attached to the upper end region of the push bar 15 and the seat support bar 17. Therefore, in the folded state, the lower end region of the push rod 15 substantially overlaps with the seat support rod 17, and the upper end region of the push rod 15 is positioned above the seat support rod 17. Since the upper end 31a of the seat 31 is attached to the upper end region of the push rod 15 and the seat 31c of the seat 31 is attached to the front end region and the intermediate region of the seat support rod 17, even in the folded state. The upper end portion 31a is kept away from the seat portion 31c. Therefore, the seat 31 is not compressed by the upper end region of the push rod 15 and the seat support rod 17 in the folded state, and the seat 31 does not become a resistance when folded.

  Further, according to the present embodiment, the frame member 33 and the protruding portion 21p are provided as the first deployed state locking mechanism that holds the seat support rod 17 so as not to rotate with respect to the rear leg 14 in the deployed state of the baby carriage. Therefore, the seat support bar 17 can be securely connected to the rear leg 14, and the triangle formed by the frame member 33, the seat support bar 17 and the rear leg 14 is held undeformable. Therefore, in the unfolded state, the seat seat 31 supported by the seat support rod 17 can be prevented from rattling, and a stable riding comfort can be provided.

  Further, according to the present embodiment, the first deployed state locking mechanism includes the frame member 33 having one end rotatably connected to the seat support rod 17 and the other end removably connected to the rear leg 14. Therefore, the deployed state locking mechanism can be provided in the rear space of the seat seat 31, and the deployed state locking mechanism does not interfere with the infant sitting on the seat seat 31.

  In addition, according to the present embodiment, the two bars that intersect in an X shape are included, the upper ends of the bars are slidably supported by the pair of rear legs 14, and the lower ends of the bars are supported by the pair of rear legs 14. Since the back cross member 18 connected so that rotation is further possible, the push rod slide type baby carriage can be reduced also in the width direction.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The push rod slide type baby carriage according to the present invention is advantageously used in child-care equipment and a handcart.

DESCRIPTION OF SYMBOLS 11 Front leg, 12 Connection member, 13 Guide sleeve, 14 Rear leg, 15 Push bar, 16 Handle member, 17 Seat support bar, 18 Back cross member, 19 Bottom cross member,
21 Slide member, 22 Unfolding state lock mechanism, 26 Footrest member, 31 Seat seat, 31a Seat seat upper end portion, 31b Backrest portion, 31c Seat portion 32 Axis, 33 Frame member

Claims (2)

A baby carriage that can be folded by reducing the size in the vertical direction , the front-rear direction , and the width direction ,
A pair of front legs extending in the vertical direction;
A pair of rear legs extending in the vertical direction and having an upper end rotatably connected to an upper end of the front leg;
A pair of push rods extending in the vertical direction and having a lower end region slidably connected to the front leg and an upper end region extending further upward than the front leg;
A pair of seat support rods extending in the front-rear direction and having a rear end portion rotatably connected to the rear leg and a front end region or an intermediate region rotatably connected to a lower end region of the push rod;
A seat seat disposed between the pair of push rods and between the pair of seat support rods and attached to an upper end region of the push rod and the seat support rod ;
A pair of slide members that are slidably coupled to the pair of rear legs,
It includes two bars crossing in an X shape, the upper ends of the bars are pivotably connected to the pair of slide members, respectively, and the lower ends of the bars are pivotable to the pair of rear legs A back cross member connected to each other;
A frame member that connects the seat support bar and the slide member, holds the seat support bar non-rotatably with respect to the rear leg in a deployed state of the baby carriage, and the seat part when the baby carriage is folded A push bar slide type baby carriage, comprising: an unfolded state locking mechanism for releasing the connection between the support bar and the slide member . 2. The push rod slide baby carriage according to claim 1 , wherein one end of the frame member is rotatably connected to the seat support bar and the other end is detachably connected to the rear leg.

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