TW201348046A - Pushing rod slidable baby carriage - Google Patents

Abstract

Provided is a pushing rod slidable baby carriage, which does not need a compressive cushion and can be folded with less force, comprising: a pair of fore foot (11); a pair of rear foot (14); a pair of pushing rod (15); a pair of seat supporting bar (17) and a cushion (31); wherein the pair of pushing rod (15), in which a lower region can be slidable movably connected to the fore foot (11) and a upper region extends in a more upper direction than the direction of the fore foot (11), extend in upward and downward direction, the pair of seat supporting bar (17), in which a rear region is rotatably connected to the rear foot (14) and a front region or middle region is rotatably connected to the lower region of the pushing rod (15), extend in forward and backward direction, and the cushion (31) is mounted on the upper region of the pushing rod (15) and the seat supporting bar (17).

Description

Hand push rod sliding stroller

The present invention relates to a stroller equipped with a hand pusher that is slidable along the forefoot.

The following foldable stroller is more popular, that is, the hand pusher is mounted so as to be able to slide along the forefoot. In the unfolded state, the upper end region of the pusher is located above the forward foot, and the hand is pushed in the folded state. The upper end region slides downward to be positioned at a position overlapping the front foot. A stroller disclosed in Japanese Laid-Open Patent Publication No. 2009-120182 (Patent Document 1) is known.

In the stroller disclosed in Patent Document 1, the cloth constituting the seat cushion is lifted to the left and right pair of vehicle body frames like a hammock. More specifically, the backrest portion of the seat cushion is attached to the upper end region of the hand pusher extending further above the front foot, and the seat portion of the seat cushion is attached to the seat support bar extending in the forward and backward directions.

(previous technical literature)

(Patent Document 1): JP-A-2009-120182

However, the inventors of the present invention have found the above-described conventional hand-push sliding type The stroller has a part that needs further improvement. That is, the front end portion of the seat support bar is rotatably coupled to the central portion of the front leg via a pivot. When the stroller is folded, the seat support bar approaches the forefoot centering on the aforementioned pivot axis, and the hand push bar slides downward along the forefoot. Therefore, the upper end region of the push rod and the seat support bar are gathered forward.

Specifically, in the unfolded state, the upper end region of the hand push rod is located above the seat support bar, the upper end region of the hand push rod is mounted with the backrest portion of the seat cushion, and the seat support bar is mounted with the seat cushion seat. unit. In contrast, in the folded state, the upper end region of the pusher is close to the seat support bar and compresses the seat cushion. That is, with the folding operation, the seat cushion becomes a resistance to the folding operation when the hand pusher slides downward.

As a result, the operator of the stroller must apply a force to the hand putter to compress the seat cushion when folding the stroller. Therefore, when folding the stroller, it is necessary to force the seat cushion to be compressed, which imposes a large burden on the operator of the stroller.

The present invention has been made in view of the above problems, and an object of the invention is to provide a hand-pushing type stroller that can be folded with less force without compressing a seat cushion.

In order to achieve the above object, the hand-pushing stroller of the present invention is folded in such a manner that its up-down direction and front-rear direction are reduced in size, including a pair of forefoot, a pair of rear legs, a pair of hand push rods, a pair of seat support bars, and a seat cushion; wherein the pair of front legs extend in a downward direction; the pair of rear legs extend in a downward direction, and an upper end portion of the upper leg is rotatably coupled to an upper end portion of the front leg; The pair of hand push rods extend upward and downward, and the lower end region thereof slidably couples the front legs, and the upper end region thereof extends in a direction higher than the front leg; the pair of seat support bars extend in the front-rear direction, and the rear end thereof a front portion or an intermediate portion rotatably connecting the lower end region of the hand push rod; the seat cushion being disposed between the pair of hand push rods and the pair of seat support bars, It is mounted on the upper end region of the aforementioned hand push rod and the aforementioned seat support rod.

According to the present invention, when the stroller is folded from the unfolded state to the folded state, the front end of the seat support bar moves downward together with the hand pusher, and the lower end region of the pusher bar approaches the seat support bar, but the upper end of the hand pusher The area still leaves the seat support bar. Therefore, the seat cushion attached to the upper end region of the hand pusher and the seat support bar is not compressed in the folded state, and does not become a resistance when the baby carriage is folded.

In order to prevent the body frame of the folding stroller from being suddenly folded, a locking mechanism that maintains the unfolded state is provided. According to an embodiment of the present invention, there is further provided an unfolded state locking mechanism, wherein the unfolded state locking mechanism holds the seat support bar so as not to be rotatable relative to the rear leg or the hand pusher. According to the above embodiment, the hand pusher, the seat support bar, and the rear leg form a triangle that cannot be deformed, so that the looseness of the seat support bar in the unfolded state can be prevented. Therefore, the seat cushion is prevented from loosening and the ride quality is improved. As another embodiment, the expansion mechanism may be provided in the other frame member to restrict the relative movement or relative rotation of the two frame members.

In a preferred embodiment of the present invention, the unfolding state locking mechanism is a frame member, and one end of the frame member is rotatably coupled to the seat support rod, and the other end is The aforementioned hind legs are joined separately. According to this embodiment, the deployment state locking mechanism can be provided in the rear space of the seat cushion. Thereby, the angle of rotation between the seat support bar and the rear leg is firmly fixed. In another embodiment, one end of the frame member may be detachably coupled to the seat support bar, and the other end of the frame member may be rotatably coupled to the rear leg.

According to a further preferred embodiment of the present invention, the back cross member includes two bar members that are crossed in a letter "X" shape, and the pair of rear legs slidably support the upper end of the rod member, the rod The pair of rear legs are rotatably coupled to the lower end of the member. According to the above embodiment, it is possible to reduce the width direction and fold the hand-pushing stroller smaller. In another embodiment, a pair of rear legs may be coupled through a frame member that does not shrink in the width direction.

The present invention does not compress the seat cushion when folding the stroller, so the operator of the stroller can easily fold the stroller with less force than usual. Therefore, the operator can perform the folding operation with one hand, and the operability is improved.

11‧‧‧ Front foot

11w‧‧‧ front wheel

12‧‧‧Connected components

12a, 13a‧‧‧Cylinder

12b, 13b‧‧‧ Extension

13‧‧‧ Guide sleeve

14‧‧‧ hind feet

14w‧‧‧ Rear wheel

15‧‧‧Hand putter

16‧‧‧Handle components

17‧‧‧Seat support bar

17b‧‧‧Fixed bracket

18‧‧‧Back cross member

19‧‧‧Bottom cross member

21‧‧‧Sliding members

21p‧‧‧protrusion

22‧‧‧Unfolding state locking mechanism

22m‧‧‧first link

22n‧‧‧second link

23, 32‧‧‧ pivot

24‧‧‧Operating components

25‧‧‧ Hinges

26‧‧‧foot members

31‧‧‧ Seat cushion

31a‧‧‧Upper end of seat cushion

31b‧‧‧Backrest

31c‧‧‧Seat

33‧‧‧Frame components

34‧‧‧torsion spring

35‧‧‧Incision Department

1 is a side view showing a hand push-pull type stroller according to an embodiment of the present invention; FIG. 2 is a rear view showing a body frame of the stroller; and FIG. 3 is a schematic view showing the stroller in a folded state; Fig. 4 is a rear view showing the frame of the vehicle body in a folded state; Fig. 5 is a side view showing the unlocking mechanism of the unfolded state; and Fig. 6 is a side view showing the released state of the unfolding state locking mechanism.

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a side view showing a hand push-pull type stroller according to an embodiment of the present invention. Fig. 2 is a rear view showing the body frame of the stroller. Figures 1 and 2 show the deployed state of the stroller. Fig. 3 is a schematic side view showing the stroller in a folded state. Fig. 4 is a rear view showing the body frame in a folded state.

The comparison of Figs. 1 and 3 clearly shows that the stroller has reduced its size in the up and down direction and the width direction by folding. As a main constituent element of the vehicle body frame, the stroller includes a frame member which is a pair of front legs 11, a pair of rear legs 14, a pair of hand pushers 15, a pair of handle members 16, a pair of seat support bars 17, and a back surface Cross member 18, bottom cross member 19.

Each of the front legs 11 is a linear rod member extending in the vertical direction, and has a front wheel 11w at its lower end and a coupling member 12 at its upper end. The joint member 12 is fixed to the front leg 11, has a cylindrical body 12a on the front side, and has a projecting portion 12b at the rear portion thereof. As shown in Fig. 1, the lower end portions of the pair of front legs 11 are coupled at their central portions by a flexable step member 26. The tread member 26 extends substantially linearly in the width direction in the unfolded state in which the stroller is opened.

Each of the rear legs 14 is a linear rod member that extends in the vertical direction, and has a rear wheel 14w at its lower end. The upper end portion of each of the rear legs 14 rotatably connects the projecting portion 12b of the joint member 12. In the unfolded state of the stroller, the rear leg 14 is opened at a predetermined angle with respect to the forefoot 11. Following the folding action of the stroller, each of the rear legs 14 rotates in the direction of approaching each of the forefoots 11, in Figures 3 and 4 In the folded state shown, each of the rear legs 14 is in a parallel relationship with each of the front legs 11, and the rear wheels 14w are located above the front wheels 11w.

Each of the hand pushers 15 is a linear rod member that extends in the vertical direction. When the stroller is in the unfolded state, each of the hand pushers 15 is disposed such that its lower end region is superposed on each of the front legs 11, and the upper end regions of the respective pushers 15 extend in a direction above the forefoots 11. Each of the hand push rods 15 is slidably held by the tubular body 12a of the joint member 12. With the folding operation of the stroller, each of the hand pushers 15 slides downward on the front legs 11, and in the folded state shown in Fig. 3, the lower ends of the hand pushers 15 abut against the ground plane G. By touching the lower end of the hand pusher 15 of the ground G and the front wheel 11w, the stroller in the folded state can stand up on its own. A guide sleeve 13 is fixedly attached to a lower end region of each of the push rods 15. The guide sleeve 13 has a cylindrical body 13a and a projecting portion 13b projecting inward in the width direction on the rear side thereof. The cylindrical body 13a is held in such a manner that the front leg 11 can slide. The projecting portion 13b rotatably supports the front end region or the intermediate portion of the seat support bar 17 via the pivot shaft 32.

A handle member 16 is extended from the upper end of each of the hand push rods 15. The pair of handle members 16 are bent and extended in a direction forward of the upper end of the hand push rod 15. Therefore, the entire push rod 15 and the handle member 16 are formed in a substantially letter "L" shape.

A pair of sliding members 21 are slidably mounted in an upper end region of each of the rear legs 14. As shown in FIGS. 2 and 4, the pair of slide members 21 are rotatably coupled to the upper ends of the back cross member 18, respectively. The back cross member 18 is formed in such a manner that the two rod members are crossed into a letter "X" shape, and the intersections thereof are pivotally coupled to each other. Two of the back cross members 18 The lower ends are rotatably coupled to the lower ends of the pair of rear legs 14, respectively. In this state, the rear cross member 18 is stretched over the pair of rear legs 14, and the pair of rear legs 14 slidably support the two upper ends of the rear cross member 18.

The bottom cross member 19 includes a first rod member and a second rod member that are crossed in a letter "X" shape, the front end portions of which are rotatably coupled to the lower end portions of the pair of hand push rods 15, respectively, and the rear end portions thereof are respectively rotatably An intermediate portion of the pair of rear legs 14 is connected.

The pair of seat support bars 17 extend in the front-rear direction, and the front end region or the intermediate portion rotatably connects the lower end region of the hand push rod 15, and the rear end portion rotatably couples the rear leg 14. A fixing bracket 17b is fixed to a rear end region of the seat support bar 17. One end of the frame member 33 extending in the front-rear direction is rotatably coupled to the fixing bracket 17b. Further, the other end of the frame member 33 detachably couples the rear leg 14. Specifically, the other end of the frame member 33 is detachably coupled to the sliding member 21 attached to the rear leg 14, and the frame member 33, the rear end region of the seat support bar 17, and the intermediate portion of the rear leg 14 constitute a triangle. In the unfolded state of the stroller, the triangle remains undeformable. As described above, the frame member 33 and the sliding member 21 constitute a first unfolded state locking mechanism.

Fig. 5 and Fig. 6 are side views showing the first unfolding state locking mechanism, Fig. 5 shows the locked state, and Fig. 6 shows the unlocked state. As shown in Fig. 5, the frame member 33 is stretched over the seat support bar 17 and the rear leg 14 in the unfolded state, and restricts the relative movement of the two frame members (the rear leg 14, the seat support bar 17). The frame member 33 extends in the front-rear direction at a position above the seat support bar 17, and one end of the frame member 33 and the seat support A torsion spring 34 is provided to be contracted between the rods 17. The torsion spring 34 is supported by the fixing bracket 17b and pushes the frame member 33 upward.

The other end of the frame member 33 forms a cutout portion 35. The notch portion 35 has a shape that opens upward, and is engageable with the protrusion portion 21p formed on the sliding member 21. And the engagement is maintained by the elastic thrust of the torsion spring 34. Thereby, the frame member 33 is coupled to the rear leg 14. When the frame member 33 is pressed against the spring 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 cushion 31 is attached to an opponent push rod 15 and a pair of seat support bars 17. The seat cushion 31 has an upper end portion 31a, a backrest portion 31b, and a seat portion 31c extending downward from the upper end portion 31a and supporting the back of the infant, the seat portion 31c connecting the lower end of the backrest portion 31b and supporting the buttocks of the infant The thigh, the upper end portion 31a, the backrest portion 31b, and the seat portion 31c are continuous hammock-like sewn products. The upper end portion 31a of the seat cushion 31 spans the upper end region of the pair of hand push rods 15, and the seat portion 31c spans the front end region of the pair of seat support bars 17, and the backrest portion 31b extends from the upper end portion 31a to the seat portion 31c. In the present embodiment, the upper end portion 31a is provided at a position above the tubular body 12a in the hand pusher 15. More specifically, that is, the upper end portion 31a is attached to the upper end portion of the hand pusher 15. Further, the front end of the seat support rod 17 protrudes forward more than the hand push rod 15, the center portion of the seat support rod 17 is located further rearward than the hand push rod 15, and the seat portion 31c is attached to the front end and the center of the hand push rod 15, respectively. unit.

The back cross member 18 will be described below. In the upper end region of the rear cross member 18, a second unfolded state locking mechanism 22 is provided to fix the intersection angle of the first rod member and the second rod member in the unfolded state of the stroller. The exhibition The open state locking mechanism 22 includes a first link 22m, a second link 22n, and an operating member 24, wherein one end of the first link 22m rotatably couples the second bar member, one end of the second link 22n The first rod member is rotatably coupled. The other end of the first link 22m and the other end of the second link 22n are coupled to each other via a pivot shaft 23. The first link 22m and the second link 22n extend in the width direction as a whole. The operating member 24 is further coupled to the pivot shaft 23. The operating member 24 is supported by the pivot 23 via the hinge 25, and is in an upward posture or a downward posture.

In the unfolded state of the stroller, the first link 22m and the second link 22n are fixed in a position slightly beyond the dead point, and the angle of intersection of the first rod member and the second rod member is fixed. When the stroller is folded, the operating member 24 is pulled up by hand as indicated by the arrow in Fig. 2. Then, as shown in Fig. 4, the first link 22m and the second link 22n are bent upward.

The folding operation of the hand pusher slide type stroller of the present embodiment will be described below.

The operator of the stroller first detaches the other end of the frame member 33 from the sliding member 21, releasing the first unfolding state locking mechanism. As a result, the seat support bar 17 can be rotated relative to the rear leg 14. Then, the operating member 24 is pulled up as described above, and the second unfolding state locking mechanism is released. Thereby, each frame member of the components of the vehicle body frame can be rotated. Next, the operator of the stroller presses the handle member 16 downward and further pulls up the operation member 24, whereby each of the slide members 21 slides upward on each of the rear legs 14, and the back cross member 18 is oriented as shown in Fig. 4 The width direction is reduced. At the same time, each frame member is rotated or slid in the manner described below, the baby The car changes from an unfolded state to a folded state.

That is, when the baby carriage is folded, the operator presses the handle member 16 downward, and the hand push lever 15 slides downward as indicated by the arrow in FIG. Further, the seat support rod 17 is rotated counterclockwise in the first drawing, the angle between the seat support rod 17 and the hand push rod 15 is reduced, and the angle between the seat support rod 17 and the rear leg 14 is increased. Therefore, the stroller changes from the unfolded state of Fig. 1 to the folded state of Fig. 3. In the folded state, the seat support bar 17 is located inside the width direction of the lower end region of the hand push rod 15.

Further, when the baby carriage is folded, the front end portion of the bottom surface cross member 19 connected to the lower end portion of the hand push rod 15 also moves downward as the hand push rod 15 moves downward, and is coupled to the rear end portion of the bottom surface cross member 19. The pair of rear legs 14 also rotate with the forward foot 11. As the amount of movement of the lower end portion of the hand pusher 15 downward increases, the distance between the front end portion and the rear end portion of the bottom surface crossing member 19 becomes longer, and the bottom surface crossing member 19 is reduced in the width direction thereof.

In the folded state of the stroller, the step member 26 has a curved shape of a letter "V" shape. Since the seat cushion 31 is a sewn product made of cloth and can be freely bent, it is bent as the sliding movement of the hand push rod 15 and the rotation of the seat support rod 17 are folded during folding.

As described above, by the folding operation, the frame members of the hand-pushing stroller are slidably moved and rotated, and the hand-pushing stroller is shrunk in the width direction, the front-rear direction, and the up-and-down direction. When the stroller in the folded state is unfolded, the reverse operation as described above is performed.

According to this embodiment, the seat support bar 17 extends in the front-rear direction, and the rear end portion thereof rotatably connects the rear leg 14 and the front end region or the intermediate portion thereof is transparent. The pivot shaft 32 rotatably connects the lower end region of the hand push rod 15. Further, the seat cushion 31 is provided at an upper end region of the hand push lever 15 and a seat support bar 17. Therefore, in the folded state, the lower end region of the hand push rod 15 slightly overlaps with the seat support rod 17, and the upper end region of the hand push rod 15 is located above the seat support rod 17. The upper end portion 31a of the seat cushion 31 is provided in the upper end region of the hand pusher 15, and the seat portion 31c of the seat cushion 31 is provided at the front end region and the intermediate portion of the seat support bar 17, so that even in the folded state, the upper end portion 31a It still leaves upward from the seat portion 31c. Therefore, in the folded state, the seat cushion 31 is not compressed by the upper end region of the hand push lever 15 and the seat support bar 17, so the seat cushion 31 does not become a resistance when folded.

Further, according to the present embodiment, in the unfolded state of the stroller, the first unfolded state locking mechanism has the frame member 33 and the protruding portion 21p, and the first unfolded state locking mechanism holds the seat supporting rod 17 from the rear leg 14 Turn. Therefore, the seat support bar 17 can be firmly coupled to the rear leg 14, and the triangle formed by the frame member 33, the seat support bar 17, and the rear leg 14 can be prevented from being deformed. Therefore, it is possible to prevent the seat cushion 31 supported by the seat support bar 17 from being loosened in the unfolded state, and to provide stable ride quality.

Further, according to the present embodiment, the first unfolding state locking mechanism includes the frame member 33, wherein one end of the frame member 33 is rotatably coupled to the seat support rod 17, and the other end is detachably coupled to the rear leg 14, so that The rear space of the seat cushion 31 is provided with an unfolded state locking mechanism, and the unfolded state locking mechanism does not hinder the infant who is seated on the seat cushion 31.

Further, according to the present embodiment, the back cross member 18 is further included, and the back cross member 18 includes two cross-shaped "X" shapes. In the bar member, the pair of rear legs 14 slidably support the upper end of the rod member, and the lower end of the rod member rotatably connects the pair of rear legs 14, so that the hand-pushing stroller can be reduced in the width direction.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and changes can be added to the embodiments shown in the drawings.

(industrial availability)

The hand-pushing stroller of the present invention can be applied to childcare appliances and carts.

11‧‧‧ Front foot

11w‧‧‧ front wheel

12‧‧‧Connected components

12a, 13a‧‧‧Cylinder

12b, 13b‧‧‧ Extension

13‧‧‧ Guide sleeve

14‧‧‧ hind feet

14w‧‧‧ Rear wheel

15‧‧‧Hand putter

16‧‧‧Handle components

17‧‧‧Seat support bar

17b‧‧‧Fixed bracket

18‧‧‧Back cross member

19‧‧‧Bottom cross member

21‧‧‧Sliding members

32‧‧‧ pivot

24‧‧‧Operating components

26‧‧‧foot members

31‧‧‧ Seat cushion

31a‧‧‧Upper end of seat cushion

31b‧‧‧Backrest

31c‧‧‧Seat

33‧‧‧Frame components

Claims (4)

A hand-pushing sliding type stroller is folded in such a manner that its up-and-down direction and front-rear direction are reduced in size, including: a pair of forefoot extending upward and downward; a pair of rear legs extending upward and downward, the upper end portion being rotatably coupled An upper end portion of the front leg; a pair of hand push rods extending in a downward direction, a lower end region of the front leg slidably coupled to the forefoot, and an upper end region extending in a direction above the forefoot; a pair of seat support bars, forward and backward a direction extending, a rear end portion of the rear end portion rotatably coupled to the rear leg, and a front end region or an intermediate portion rotatably connecting the lower end region of the hand push rod; a seat cushion disposed between the pair of hand push rods and the pair of seats The support rods are mounted between the upper end region of the hand pusher and the seat support bar. The hand push-pull type stroller of claim 1, wherein the unfolding state locking mechanism, in the unfolded state of the stroller, maintains the seat support bar relative to the rear foot or The aforementioned hand pusher cannot be rotated. The hand-pushing type stroller of claim 2, wherein the unfolding state locking mechanism includes a frame member, one end of the frame member rotatably coupling the seat support bar, and the other end detachably connecting the aforementioned Back foot. For example, the hand-pushing stroller of claim 1 of the patent scope, wherein The back cross member includes two rod members that are crossed in a letter "X" shape, the pair of rear legs slidably support the upper end of the rod member, and the lower end of the rod member rotatably couples the pair Back foot.