CN1600617A - stroller - Google Patents

Abstract

The invention discloses a baby carriage, which can obtain a usable unfolded state or a folded state, and at the same time, can selectively switch a hand push rod (15) into a rear push state or a front push state. The lower end of the hand push rod (15) is pivotally mounted on the pipe fitting (17), and is connected with the pipe fitting (17) on which the handrail (16) is installed and the bracket (25) for locking or unlocking the rear foot (14). The shaft mounting shafts are on the same axis. A handle cover (41) covering the pivotal mounting portion of the above-mentioned bracket (25) is provided on the lower end of the hand push rod (15). Rotation limiting parts (40, 41b) are provided on the opposing surfaces of the handle cover (41) and the above-mentioned bracket (25), so that they will not interfere with each other when the stroller body is unfolded and folded, and when the front and back are switched. Stop it from rotating when hand push rod (15) and support bracket (25) want to rotate relative to more than its range.

Description

stroller

technical field

The present invention relates to a baby carriage, in particular to a baby carriage which can be used in an unfolded state or a folded state, and at the same time can selectively switch a push rod to a rear push state or a front push state.

Background technique

Generally, in baby carriages used when taking infants and young children outdoors for walking or shopping, it is proposed that the hand push rod can be switched to the back push state or the front push state, and can be folded up as needed, so as to facilitate storage or storage. Various programs are carried for practical use.

Fig. 6 is a three-dimensional view showing the general structure of the baby carriage. After being folded into a double-fold state in which the front legs and rear legs are parallel to each other, this baby carriage can be further folded into a U-shaped and three-fold state, including: a pair of left and right wheels with front wheels 11 The front foot 12, the left and right pair of rear feet 14 with the rear wheel 13, the hand push rod 15 bent into a substantially U shape, the left and right pair of armrests 16, and the root ends of the armrests that are pivotally installed respectively, are parallel to each other. There are two left and right pipes 17 extending in the ground.

A front leg 12 is pivotally mounted on the front end side of each of the above-mentioned armrests 16, and a protective bar 18 that can be bent into an arc shape is erected detachably between the front ends of the left and right armrests 16. Furthermore, the upper ends of the rear legs 14 are pivotally attached to the left and right armrests 16 . The left and right front legs 12 are connected by a front connecting rod 20 having a footboard 19 , and the left and right rear legs 14 are connected by a rear connecting rod 21 . In addition, the front ends of the connecting rods 22 are pivotally mounted on the middle part of each front leg 12, and the rear ends of the connecting rods 22 are respectively pivotally mounted on the rear foot support members 23 fixed on the bottom of the above-mentioned pipe fitting 17. Furthermore, the left and right connecting rods 22 are connected together by an upper connecting rod 24 . Like this, by these front foot 12, rear foot 14, armrest 16, pipe fitting 17, and the connecting bar that connects them constitutes the stroller main body.

On the above-mentioned rear foot support member 23, the lower end of a U-shaped hand push rod 15 is pivotally mounted on its outer surface, and can swing back and forth through the shaft 15a. On the locking protrusions 16a, 16b on the outer surfaces of the front end and the rear end of the armrest 16, as shown in Figure 7, the above-mentioned hand push rod 15 can be pushed to the back side shown by the solid line or the two-dot dash line. Positive push condition shown.

As shown in FIG. 8 , the lower end of an L-shaped bracket 25 is pivotally mounted on the rear foot 14 , and the middle portion of the bracket 25 is pivotally mounted on the rear foot supporting member 23 via a shaft 23 a. The free end of the bracket 25 is provided with a notched step portion 25 a that engages with a locking step portion 26 a of the locking member 26 that locks the rear leg 14 to the pipe member 17 . The above-mentioned locking part 26 is slidably installed on the above-mentioned pipe fitting 17, and when the hand push rod 15 is in the back pushing state, the remote control device 27 arranged on the top end of the hand push rod 15 slides up and down along the pipe fitting 17. be manipulated. Furthermore, on the surface of the rear leg support member 23 that faces the rear leg 14, a stepped portion 23b that abuts the rear leg 14 when deployed and maintains the deployed state is formed.

On the above-mentioned hand push rod 15, as shown in FIG. Attached downward by the action of the spring.

However, as shown in FIG. 8, when the locking member 26 is engaged on the notch step portion 25a of the L-shaped bracket 25, the rear foot 14 and the pipe member 17 are locked via the bracket 25, and the main body of the stroller remains in the position shown by the solid line. The available expansion states for . On the other hand, when the lock member 26 is pulled up by the remote control device 27 after it has been brought into the back push state, the lock formed by the lock member 26 is released. Therefore, if the rear wheel 13 is moved forward, and the hand push rod 15 is pushed down downward, then the armrest 16, the front foot 12, and the rear foot 14 swing upward as shown in Figure 8 and Figure 9 by the dashed line, which can facilitate Folds into two folds for portability.

However, on the hand push rod 15, the front connecting rod 20, the rear connecting rod 21, and the upper connecting rod 24, joints 15a ₁ , 15a ₂ , 20a ₁ , and 20a are respectively provided at two places in the respective middle parts. ₂ , 21a ₁ , 21a ₂ , 24a ₁ , 24a ₂ , can be folded through their joints. In this way, when the front foot 12 and the rear foot 14 are folded to be parallel to each other, the axes of the joints 15a ₁ , 20a ₁ , 21a ₁ , 24a ₁ and the axes of 15a ₂ , 20a ₂ , 21a ₂ , and 24a ₂ are respectively located in the joints. on the same axis and parallel to each other.

However, after the front foot 12 and the rear foot 14 are folded into a double-folded state in a state parallel to each other as described above, when the joint outer part of the hand push rod 15 is moved forward, the hand push rod 15 will move forward through each joint. The connecting rod 20 and the outer part of the rear connecting rod 21 are bent forward, as shown in FIG. 10 , so that the stroller can be compactly folded into a three-fold state.

Patent Document 1 JP-A-2000-316650

However, in the baby carriage that can be switched to the front push state or the back push state by the remote control device 27 provided on the push rod 15 as described above, if the baby carriage body is folded into a double-folded state, the remote control device is misoperated, When the locking hook is released, there is a problem that the baby carriage main body in the double-folded state passes between the left and right locking hooks 30 provided on the hand push rod 15 and falls backward. Therefore, for example, on the hand push rod 15, an overturning prevention member that abuts against the main body of the stroller moving backwards and prevents it from falling backwards is provided, or a latch provided on the armrest 16 that is engaged with the latching hook 30 The protrusions 16a, 16b are elongated in the left and right directions, and when folded, the locking protrusions abut against the hand push rod 15 to prevent the main body of the stroller from falling backward. However, there is a problem in that the former requires special parts for preventing falling, while the latter detracts from the appearance.

Contents of the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a stroller that can prevent misoperation of switching without sacrificing the appearance and without providing special parts for preventing overturning.

The present invention is a stroller that can be used in an unfolded state or a folded state, and at the same time can selectively switch the hand push rod to a rear push state or a front push state, and is characterized in that it includes a baby carriage main body and a push rod, wherein , the main body of the stroller has a pair of rear feet extending in parallel, a pair of pipe fittings extending in parallel, an armrest, and one end is pivotally mounted on each rear foot, and the middle portion is respectively pivotally mounted on the lower ends of a pair of pipe fittings extending parallel to each other part, and on the other end, there is a bracket that locks each rear foot on the above-mentioned pipe fitting. The pivotal installation shafts of the stroller are on the same axis, and a rotation limiting part is provided between the outer surface of the bracket and the push rod. When the main body of the stroller is unfolded and folded, and when the front and back are switched, they will not interfere with each other. When the rod and the bracket are about to rotate relative to the outside of their range, they are prevented from rotating.

The baby carriage of the present invention is characterized in that a handle cover is provided at the lower end of the hand push rod to cover the pivotal attachment portion to the bracket, and the rotation restricting portion is provided between the handle cover and the bracket.

The baby carriage of the present invention is characterized in that the rotation restricting portion is composed of an arc-shaped recess provided on one of the handle cover and the frame, and a convex portion provided on the other and moving in the recess.

The baby carriage of the present invention is characterized in that when the main body of the baby carriage is unfolded, the convex portion of the rotation restricting portion abuts against one end wall surface of the arc-shaped concave portion, and when folded, the convex portion abuts against the other end wall surface of the arc-shaped concave portion, the handle cover Relative rotation with the bracket is restricted.

The stroller of the present invention is characterized in that a locking hook is provided on the hand push rod, and a first locking protrusion and a second locking protrusion engaged with the locking hook are respectively provided on each pipe member and the armrest.

The stroller of the present invention is characterized in that the unlocking member is slidably provided along the push rod, and the rotation restricting portion is provided between the unlocking member and the stand.

The baby carriage of the present invention is characterized in that the rotation restricting portion is constituted by a lock release lever protruding from the lock release member and an additional convex portion provided on the outer surface of the stand and folded in double on the baby carriage main body. When it abuts against the above-mentioned lock release lever, it prevents the hand push rod and the support from relatively rotating excessively.

The stroller of the present invention is characterized in that a locking hook is provided on the hand push rod, and a first locking protrusion and a second locking protrusion engaged with the locking hook are respectively provided on each pipe member and the armrest.

Description of drawings

Fig. 1 is a perspective view showing a general structure of the stroller of the present invention.

Fig. 2(a) and Fig. 2(b) are diagrams showing the back pushing state and the front pushing state.

Fig. 3(a), Fig. 3(b) and Fig. 3(c) are the action descriptions of the rotation restricting part when the hand push rod is in the back pushing state or the front pushing state, or when the main body of the stroller is in the double-fold state picture.

Fig. 4(a) and Fig. 4(b) are respectively exploded perspective views of the bracket and the pivot mounting part of the hand push rod.

Fig. 5 is a drawing showing another embodiment of the present invention.

Fig. 6 is a perspective view showing a general structure of a conventional stroller main body.

Fig. 7 is an explanatory diagram of switching operation between the rear push state and the front push state of the conventional baby carriage.

Fig. 8 is an explanatory diagram of the operation when the main body of the stroller is double-folded.

Fig. 9 is an explanatory diagram of the overall action when the main body of the stroller is double-folded.

Fig. 10 is a diagram showing a state in which the main body of the stroller is folded in three.

Detailed ways

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4 . Fig. 1 is a perspective view showing the general structure of the stroller of the present invention, equipped with a stroller main body 10 and a hand push rod 15, said stroller main body includes: a pair of left and right front feet 12 with front wheels 11, a pair of left and right rear feet 14 with rear wheels 13 , a pair of left and right handrails 16, and two left and right pipes 17 that are pivotally installed at the root ends of the handrails 16 and extend parallel to each other. U-shaped.

A front leg 12 is pivotally mounted on the front end side of each of the above-mentioned armrests 16, and a protective bar 18 that can be bent into an arc shape is erected detachably between the front ends of the left and right armrests 16. Also, the upper ends of the rear legs 14 are pivotally mounted on the left and right armrests 16 . The left and right front legs 12 are connected by a front connecting rod 20 having a footboard 19 , and the left and right rear legs 14 are connected by a rear connecting rod 21 . In addition, on the middle portion of each front leg 12, as shown in FIG. Furthermore, the left and right connecting rods 22 are connected to each other by an upper connecting rod (not shown).

The lower end of an L-shaped support frame 25 is pivotally mounted on the rear foot 14, and the middle portion of the support frame 25 is pivotally mounted on the lower end of the above-mentioned pipe fitting 17 through a shaft 31. In addition, it can swing back and forth on the above-mentioned shaft 31. The ground pivot is equipped with a hand push rod 15 . The free end of the bracket 25 is provided with a notched step portion 25 a that engages with a locking step portion 26 a of the locking member 26 that locks the rear leg 14 to the pipe member 17 . The locking member 26 is slidably mounted on the pipe 17 , and is operated to slide up and down along the pipe 17 by a remote control device 27 provided on the top end of the push rod 15 . That is, a lock release member 32 operated by the above-mentioned remote control device 27 is installed on the hand push rod 15, and can slide along the hand push rod 15, and the outer surface of the lock release member 32 protrudes toward the direction of the above-mentioned lock member 26. Extended lock release lever 33 (FIG. 3). On the other hand, the above-mentioned locking member 26 is provided with an operating plate 34 protruding upward from the above-mentioned unlocking lever. The plate 34 and the lock member 26 are pulled up, and the lock of the bracket 25 is released. In addition, a rear foot supporting portion (not shown) that abuts on the rear foot 14 when unfolded and maintains the unfolded state is provided on the surface facing the rear foot 14 on the lower end portion of the pipe member 17 .

As shown in Figure 2 (b), when the locking part 26 is engaged on the notch step portion 25a of the L-shaped bracket 25, the rear foot 14 and the pipe fitting 17 are locked via the bracket 25, and the main body of the stroller remains in a usable position. the expanded state of . On the other hand, when the locking part 26 is pulled up by the remote control device 27, the lock formed by the locking part 26 is released, and the armrest 16, the front foot 12, and the rear foot 14 can swing upwards in the same way as the conventional device, which can be beneficial to carry. Folds into a double fold.

On the above-mentioned pipe fitting 17, as shown in Figure 2 (b), a stopper 35 for fixing the hand push rod is fixedly installed by a pin 36, and the root end portion of the handrail 16 is pivotally installed on the above-mentioned pin 36. The stopper 35 protrudes in a direction opposite to the armrest 16, and on the outer surface side of the stopper 35 is provided a first locking protrusion 38a to which a locking hook 37 described later engages ( FIG. 2( b )). Further, on the outer surface of the front end portion of the armrest 16, a second locking projection 38b to which the locking hook 37 selectively engages is protruded ( FIG. 2( a )).

On the other hand, a locking hook 37 is installed on the above-mentioned hand push rod 15, which can slide along its hand push rod 15. On the above-mentioned locking hook 37, as shown in Figure 3 (a), a locking hook 37 is formed that can be engaged in The first recess 37a on the first locking protrusion 38a and the second recess 37b engageable on the second locking protrusion 38b.

When the above-mentioned locking hook 37 is pulled up against the spring by the above-mentioned remote control device 27, and the hand push rod 15 is swung backward, as shown in FIG. 3(a), the first recess 37a of the locking hook 37 is engaged On the above-mentioned first locking protrusion 38a, as shown in FIG. 2(a), the hand push lever 15 is fixed in the backward swing position, that is, in the back push state. On the other hand, when the locking hook 37 is pulled up to swing the hand push rod 15 forward, as shown in FIG. 38b, as shown in Figure 2 (b), the hand push rod 15 is fixed at the front swing position, that is, the frontal push state.

Fig. 4 (a), Fig. 4 (b) are the disassembled perspective views of the support bracket 25 and the installation part of the hand push rod 15 pivotally installed on the lower end of the pipe fitting 17, and a shaft 31 is formed on the outer surface of the support bracket 25 The inserted bearing portion 25a has a convex portion 40 protruding in the radial direction formed on the bearing portion 25a. On the other hand, a handle cover 41 covering the pivot mounting portion of the above-mentioned hand push rod 15 is fixedly mounted on the lower end of the push rod 15 pivotally mounted on the pipe 17 through the shaft 31 together with the above-mentioned bracket 25 . On the above-mentioned handle cover 41, as shown in FIG. 41a, arc-shaped recesses 41c partitioned by partition walls 41b are formed on the inner peripheral surface of the handle cover 41 . Moreover, the convex portion 40 of the above-mentioned bracket 25 is fitted in the above-mentioned arc-shaped concave portion 41c, and within the range limited by the two side walls of the above-mentioned partition wall 41b, the above-mentioned convex portion 40 can fit in the arc-shaped concave portion 41c along the circumferential direction. relatively mobile.

Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are the bracket 25 and the handle cover when the hand push rod 15 is respectively in the back push state or the front push state, or when the stroller main body 10 is in the folded state 41 of the relative relation of the rotation restricting part, as shown in FIG. , Prevented the hand push rod 15 from turning excessively in the clockwise direction in the figure. And, when pushing the state in front, as shown in Figure 3 (b), become the state that convex portion 40 and partition wall 41b separate from each other, can not have any restriction on hand push rod 15, and hand push rod 15 can push in the back Oscillate freely between state and frontal push state. On the other hand, as shown in Figure 3(c), in the case of a double-folded state, the convex portion 40 abuts against the other end wall of the partition wall 41b, which prevents the hand push rod 15 from moving against the folded stroller main body 10. Leaning forward too much. That is, when the stroller main body 10 is folded into a double-folded state, even if the remote control device is misoperated to release the locking hook, it is possible to prevent the double-folded stroller main body 10 from passing through the push rod 15. Between the left and right locking hooks 37 on the top, it swings clockwise in the figure and falls backward.

In addition, in the above-mentioned embodiment, although the convex part 40 was provided in the bracket 25, the convex part 40 may be provided in the handle cover 41, too.

FIG. 5 is a drawing showing another embodiment of the present invention. On the outer surface of the above-mentioned bracket, the lower end side of the pivot mounting part formed on the shaft 31 to the pipe member 17, that is, the pivot mounting to the rear leg 14. A convex portion (additional convex portion) 42 is provided on one side of the baby carriage, and the convex portion 42 abuts on the unlocking lever 33 protruding from the unlocking member 32 when the stroller body is double-folded.

When the stroller main body is double-folded, the protrusion 42 provided on the bracket abuts against the lock release lever 33, preventing the push rod 15 from falling forward excessively with respect to the folded stroller main body 10. That is, in the state in which the baby carriage main body 10 is folded into a double-folded state, even if the remote control device is misoperated to release the locking hook, the baby carriage main body 10 in a double-folded state can be prevented from passing through the hand-push handle. Between the left and right locking hooks 37 on the rod 15, it falls backward.

In the present invention, since the rotation restricting part is provided on the opposite surface of the bracket and the hand push rod that can be engaged with and disengaged from the locking part that locks the rear legs, it will not prevent the stroller body from being unfolded or folded or switched from the front to the back. Interfering with each other, when the push rod and the bracket want to rotate relative to each other beyond their range, they abut against each other to prevent their rotation. Therefore, when the main body of the stroller is in a folded state, even if the remote control device installed on the push rod is misoperated, Even when the locking hook for switching between the front and the back is released, the rearward rotation of the baby carriage main body can be restricted, and the rearward fall of the baby carriage main body can be reliably prevented. Furthermore, there is no need to provide the above-mentioned special other parts for preventing the fall, and the appearance is not spoiled.

Claims (8)

1. A baby carriage, which can be used in an unfolded state or a folded state, and at the same time can selectively switch the hand push rod to a back push state or a front push state, and is characterized in that, It includes a stroller main body and a push rod, wherein the stroller main body has a pair of rear feet extending in parallel, a pair of pipe fittings extending in parallel, armrests, and one end is pivotally installed on each rear foot, and the middle part is pivotally installed on each other. On the lower ends of a pair of pipes extending in parallel, and on the other end, there is a bracket that locks the rear feet to the engaging portion of the above-mentioned pipes, and the push rod is pivotally mounted on the above-mentioned pipes at the lower end , on the same axis as the pivotal mounting axis of the above-mentioned pipe fitting and the above-mentioned bracket, There is a rotation limiting part between the outer side of the bracket and the push rod, so that it will not interfere with each other when the main body of the stroller is unfolded and folded, and when the front and back are switched. Prevent it from turning when out of range. 2. The baby carriage as claimed in claim 1, characterized in that, A handle cover covering the pivotal mounting portion of the bracket is provided at the lower end of the hand push rod, The rotation restricting part is provided between the handle cover and the bracket. 3. The stroller according to claim 2, wherein the rotation restricting portion is composed of an arc-shaped recess provided on one of the handle cover and the frame, and a convex portion provided on the other to move within the recess. 4. The stroller according to claim 3, wherein when the stroller main body is unfolded, the convex part of the rotation restricting part abuts against one end wall surface of the arc-shaped concave part, and when folded, the convex part abuts against the side of the arc-shaped concave part. On the wall at the other end, the relative rotation of the handle cover and the brace is restricted. 5. The stroller according to claim 2, wherein a locking hook is provided on the hand push rod, and a first locking protrusion and a second locking protrusion engaged with the locking hook are respectively provided on each pipe fitting and the armrest. stop protrusions. 6. The stroller of claim 1, wherein: The lock release part is freely slidable along the push rod, The rotation restricting portion is provided between the lock releasing member and the stay. 7. The stroller according to claim 6, wherein the rotation restricting portion is composed of a lock release lever protruding from the lock release member and an additional convex portion, and the additional convex portion is provided on the outer surface of the bracket, and When the main body of the stroller is folded into a double-folded state, it abuts against the above-mentioned lock release lever to prevent excessive relative rotation of the hand push rod and the bracket. 8. The stroller according to claim 6, wherein a locking hook is provided on the hand push rod, and a first locking protrusion and a second locking protrusion engaged with the locking hook are respectively provided on each pipe fitting and the armrest. stop protrusions.

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