JP4855035B2 - stroller - Google Patents

Description

  The present invention relates to a stroller, and more particularly to a stroller in which the weight of a stroller body is reduced.

  In general, a baby stroller used for taking an infant outdoors for a walk or shopping has been developed so that it can be folded and stored and carried easily as necessary.

  FIG. 7 is a partially cutaway perspective view showing a schematic configuration of a stroller in which the base sheet for infants is mounted on a stroller body, and a pair of left and right front legs 12 having a front wheel 11 and a pair of left and right rear wheels having a rear wheel 13. The stroller body is composed of a leg 14, a hand bar 15 bent substantially in a U-shape, a pair of left and right armrests 16, and two left and right side vertical pipes 17 extending in parallel with each other, each of which is pivotally attached to one end Is configured.

  A top end portion of the front leg 12 is pivotally attached to the front portion of each armrest 16, and an arc-shaped bendable guard arm 18 is detachably suspended between the tip portions of the armrest 16. Further, the top end portions of the left and right rear legs 14 are also pivotally attached to the intermediate portion of the armrest 16, and one end of a bracket 19 bent in a square shape is pivotally attached to the intermediate portion of the rear leg 14. An intermediate position of the bracket 19 is pivotally attached to a lower end portion of the side vertical pipe 17, and the side vertical portion is engaged with an engaging portion formed at the other end of the bracket 19 in a deployed state of the stroller. The lock member 20 slidably attached to the pipe 17 is engaged, and the unfolded state is maintained.

  On the other hand, the left and right front legs 12 are connected by a front leg connecting stay 22 having a footrest plate 21, and the left and right rear legs 14 are connected by a rear leg connecting stay 23. Further, the front end of the side frame 24 is pivotally attached to the middle portion of each front leg 12, and the rear end of the side frame 24 is pivoted to the tip of the side vertical pipe 17 together with the lower end of the bracket 19 and the hand bar 15. Moreover, the middle part of the left and right side frames 24 is connected by an upper connecting stay 25 that extends in the left-right direction.

  Thus, by engaging the locking member 20 provided at the lower end of the side vertical pipe 17 with the engaging portion provided at the upper end of the bracket 19, the stroller is held in a usable state. On the other hand, when the engagement between the lock member 20 and the bracket 19 is released by operating the operating device 26 provided on the hand bar 15, the armrest 16 and the side frame 24 are attached to the side vertical pipe 17. On the other hand, it is possible to swing upward about each pivot point, and the front leg 12 and the rear leg 14 are swung in a substantially parallel state and can be folded in a folded state for convenience of carrying.

  A base sheet 27 having a seat plate portion and a backrest portion is attached to the stroller body formed as described above. That is, the base sheet 27 has a seat plate portion 27 a mounted on the upper connecting stay 25, and the left and right side portions of the backrest portion 27 b are pivot points of the armrest 16 of the left and right side vertical pipes 17. It is attached to the upper part. Then, a baby seat (not shown) made of a sewn product is placed on the base sheet 27 as required, and the baby is moved on the baby seat by sitting or sleeping on the baby seat.

  By the way, in the stroller as described above, since it may be carried in a folded state or carried while holding a stroller on a staircase or the like, weight reduction is an issue. However, in the above-described conventional stroller, the left and right side portions of the backrest portion of the base sheet are attached to the side vertical pipe 17 in a hammock manner as described above. A portion for mounting the left and right side portions of the backrest portion of the base seat is necessary above the pivot point of the base sheet, and the side portion vertical pipe 17 needs to be long, and the weight increases. However, there is a problem that weight reduction is impaired.

  In view of the above, the present invention can reduce the weight of the side vertical pipe by reducing the length of the side vertical pipe to the minimum necessary length, and can protect the side and head of an infant riding a stroller. The purpose is to obtain a stroller.

  According to the first aspect of the present invention, the front end portions of the side plates are mounted on the left and right frame mounting members for mounting the rear end portions of the left and right side frames that connect the front legs and the rear legs, and the back support portions of the base sheet are supported. A headrest is connected to the frame, and both side portions of the headrest are connected to the side plate.

  According to a second aspect of the present invention, in the first aspect of the invention, the side plate is pivotally attached to the left and right frame mounting members so that the front end of the side plate is swingable. Both sides of the headrest, whose lower end is pivotally attached to the backrest support frame, are pivoted so that when the backrest support frame is swung downward, the headrest is swung in the rising direction. It is characterized by that.

  The invention according to claim 3 is characterized in that, in the invention according to any one of claims 1 to 3, a pin projecting from a side portion of the headrest is engaged with a long hole of the side plate.

  According to a fourth aspect of the present invention, the U-shaped seat support frame comprising the left and right side frames connecting the front legs and the rear legs and the front upper connecting stays connecting the both side frames is provided with a reverse U A character-shaped backrest support frame is pivotably connected, and a base sheet fabric is stretched by the U-shaped seat support frame and the inverted U-shaped backrest support frame. And

  The invention according to claim 5 is the invention according to any one of claims 2 to 4, wherein the side plate can swing to the frame mounting member at a position above the swing shaft of the inverted U-shaped backrest support frame. It is equipped with.

  As described above, the present invention attaches the front end portions of the side plates to the left and right frame mounting members for mounting the rear end portions of the left and right side frames that connect the front legs and the rear legs, and also provides a backrest portion for the base seat. Since the headrest is connected to the support frame and both sides of the headrest are connected to the side plate, there is no need to attach the left and right sides of the backrest of the base seat to the side vertical pipe. Can be made the minimum required length, and the weight can be reduced accordingly.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The same members as those in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 1 is a perspective view showing a schematic configuration of a stroller according to the present invention, and FIG. 2 is a longitudinal side view thereof showing a pair of left and right front legs 12, a pair of left and right rear legs 14, and a hand bar 15 bent substantially in a U shape. The pair of left and right armrests 16 and the left and right side vertical pipes 17 extending in parallel to each other are pivotally attached to the rear ends of the armrests 16, respectively.

  In the armrest 16, the top ends of the front legs 12 and the rear legs 14 are pivotally attached to the front ends thereof, and the rear ends of the armrests 16 are pivotally attached to the top ends of the side vertical pipes 17. The left and right front legs 12 are connected by a front leg connecting stay 22 that also serves as a footrest plate, and the left and right rear legs 14 are connected by a rear leg connecting stay 23. A lower end portion of an L-shaped bracket 19 is pivotally attached to the rear leg 14 by a shaft 19 a, and an intermediate portion thereof is pivotally attached to a lower end portion of the side vertical pipe 17 by a shaft 30. That is, the frame attachment member 31 (FIG. 3) is pivotally attached to the lower end portions of the left and right side vertical pipes 17 on the inner surfaces facing each other by the shaft 30, and the side vertical pipes are further connected to the shaft 30. A lower end portion of a U-shaped push bar 15 is pivotally attached together with a bracket 19 disposed on the outer side of 17.

  The front ends of the side frames 24 are pivotally attached to the intermediate positions of the left and right front legs 12, and the front ends of the left and right side frames 24 are connected by a front upper connecting stay 32. Further, the rear end portion of the side frame 24 is fixed to an intermediate position of the frame mounting member 31. The frame mounting member 31 is provided with a stay mounting portion 31a projecting at a lower position opposite to the shaft 30 with respect to the fixing position of the side frame 24. A rear upper connecting stay 33 is provided on the stay mounting portion 31a. The left and right frame attachment members 31 are connected to each other by the rear upper connection stay 33. On the other hand, on the left and right frame mounting members 31, the left and right tip portions of the back support portion support frame 34 formed in an inverted U shape between the shaft 30 and the rear upper connecting stay 33 are pivoted by the shaft 35. A reverse U-shaped backrest support frame 34 is attached to the frame mounting member 31 so as to be swingable (FIG. 3).

  Incidentally, a lock member 20 is slidably mounted on the lower end portion of the side vertical pipe 17 so as to engage with the free end portion of the bracket 19 in a deployed state of the stroller and maintain the expanded state. On the other hand, a lock release member 38 operated by a remote operation device 37 provided on the hand bar 15 is slidably mounted on the hand bar 15 so as to be slidable along the hand bar 15. When the unlocking member 38 is pulled up, the locking member 20 is pulled upward via the unlocking bar 39 provided on the unlocking member 38 and the operation plate 40 provided on the locking member 20, and the bracket 19 is locked. The stroller body can be folded in two so that the front leg 12 and the rear leg 14 are in a substantially parallel state.

  Further, locking projections 41 (only one of them) projecting in the lateral direction are fixed to the outer surfaces of the armrest 16 and the side vertical pipe 17, and the push bar 15 is engaged with the locking projections 41. A locking member 42 having a recessed portion is slidably mounted along the hand bar 15, and the locking member 42 is pulled upward by a remote control device 37 provided on the hand bar 15 to lock the bar. By releasing the member 42 from the locking protrusion 41 and swinging the hand bar 15 backward or forward, the hand bar 15 can be brought into a face pressing state or a back surface pressing state.

  By the way, the left and right side frames 24, 24 and the front upper connecting stay 32 that connects the front end portions thereof constitute a U-shaped seat support frame, and the seat support frame and the back support portion support. A base sheet fabric 46 is stretched around a portion surrounded by the frame 34. That is, both side edge portions of the seat portion 46a of the base sheet fabric 46 are attached to the left and right side frames 24, and the front end edge portion of the seat portion 46a is attached to the front upper connecting stay 32, and the seat portion 46a is attached to the seat portion 46a. Both side edges of the back support 46b connected to each other are attached to the left and right side frame parts 34a of the back support part support frame 34, and the rear end edges of the back support part 46b are the left and right sides of the back support part support frame 34. The base sheet fabric 46 is tensioned in the front-rear direction and the left-right direction. Moreover, a base sheet tension member 47 is sewn on the back surface side of the seat portion 46a of the base sheet fabric 46 stretched on the seat support frame, and the tip of the base sheet tension member 47 is deployed in the stroller. In the state, it is mounted on a rear upper connecting stay 33 provided at a position lower than the pivot shaft 35 of the back support frame 34 (FIG. 2). Thus, the seat portion 46a of the base sheet is pulled rearward by the base sheet tension member 47, and is pulled from four directions, so that the base sheet fabric 46 is more securely tensioned.

  Further, a reclining adjustment belt 48 fixed to the left and right side vertical pipes 17 is disposed on the back side of the backrest support frame 34 on which the base sheet 46 is stretched. By adjusting the length, the reclining angle of the backrest 46a can be adjusted.

  Thus, by stretching the base sheet fabric 46 in a tensioned state in the front-rear direction and the left-right direction, the rigidity of the base sheet can be maintained, and a plate material like a conventional stroller can be dispensed with. It is possible to reduce the weight. Moreover, since the rear upper connecting stay 33 is provided at a position below the pivot of the back support frame 34, even if the base sheet fabric 46 is bent by its own weight, the buttocks hit the rear upper connecting stay 33. And no discomfort.

  On the other hand, as shown in FIG. 3, the front end portion of the side plate 50 that protects the side of the infant is pivotally attached to the shaft 30 that connects the side vertical pipe 17 and the frame mounting member 31. Further, as shown in FIG. 4, the horizontal flange 34b that connects the left and right side frame parts 34a of the back support part support frame 34 is provided with bearings 51, 51 on the left and right parts thereof. 51, a lower end portion of a headrest 52 that protects the head of an infant is pivotally attached to a shaft 53. Further, pins 54 are provided on both left and right sides of the headrest 52, and the pins 54 are engaged with elongated holes 55 formed at the rear end of the side plate 50.

  FIG. 3 is a view showing a state in which the back support part support frame 34 is tilted so that an infant is laid down, and the headrest 52 stands up with respect to the plane of the back support part support frame 34. The right and left side plates 50 can protect both sides of the infant and the headrest 52 can be used to protect the head. Therefore, by adjusting the length of the reclining tension belt 48 and increasing the inclination angle of the back support portion support frame 34 as shown in FIG. 5, the side plate 50 is also tilted upward accordingly, By engaging with the long hole 55, the headrest 52 is swung clockwise in FIG. 3 about the shaft 53, so that the headrest 52 is substantially flush with the back support frame 34 and the infant is laid down. it can. On the other hand, when the reclining tension belt 48 is loosened in the state shown in FIG. 5, the side plate 50 swings downward together with the backrest support frame 34, and the headrest 52 swings upward accordingly, as shown in FIG. It becomes a state and can protect the infant's head.

  Further, in the case of the half-folded state, by setting the side plate 50 together with the back support portion support frame 34 to the state shown in FIG. 5, by operating the remote control device 37 provided on the hand bar 15, It can be folded in the same way as a conventional stroller. The state of the backrest support frame 34 and the side plate 50 in the folded state is shown in FIG.

The perspective view which shows schematic structure of the stroller of this invention. The vertical side view of the stroller of this invention. The enlarged side view of a back support part support frame and a side plate part. The top view of a backrest part support frame and a headrest part. Operation | movement explanatory drawing of a backrest part support frame and a headrest. Operation | movement explanatory drawing of the backrest part support frame and headrest at the time of folding. FIG. 6 is a partially cutaway perspective view of a conventional stroller.

Explanation of symbols

15 hand barb 16 armrest 17 side vertical pipe 20 lock member 24 side frame 30 shaft 31 frame mounting member 32 front upper connection stay 33 rear upper connection stay 34 backrest support frame 46 base seat 47 base seat tension member 48 reclining Adjustment belt 50 Side plate 52 Headrest

Claims (8)

Left and right side frames connecting the front and rear legs ;
Left and right side plates whose front end portions are swingably connected to left and right frame mounting members attached to the rear end of each side frame;
A back support frame that is swingably connected to the left and right frame mounting members;
A headrest connected to the backrest support frame in a swingable manner at the lower end;
Left and right armrests with front and rear legs connected,
Left and right side vertical pipes pivotably connected to the frame mounting member and the armrest,
A reclining adjustment belt fixed to the left and right side vertical pipes and supporting the backrest support frame from the back side, the reclining adjustment belt capable of adjusting its length,
The backrest support frame is a U-shaped frame that can support the base sheet,
A stroller in which both side portions of the headrest are pivotally attached to the side plate, and the headrest swings automatically with respect to the backrest support frame in accordance with the reclining operation of the backrest support frame .   The stroller according to claim 1, wherein the left and right side frames are connected to a rear leg via the frame attachment member and a bracket connected to the frame attachment member. Left and right side frames connected to the front legs, frame mounting members attached to the rear ends thereof, and left and right side frames connected to the rear legs via brackets connected to the frame mounting members;
Left and right side plates connected to each frame mounting member so as to be swingable at the tip,
A back support frame that is swingably connected to the left and right frame mounting members;
A headrest connected to the backrest support frame in a swingable manner at the lower end;
Left and right armrests with front and rear legs connected,
Left and right side vertical pipes pivotably connected to the frame mounting member and the armrest,
A reclining adjustment belt fixed to the left and right side vertical pipes and supporting the backrest support frame from the back side, the reclining adjustment belt capable of adjusting its length,
The backrest support frame is a U-shaped frame that can support the base sheet,
A stroller in which both side portions of the headrest are pivotally attached to the side plate, and the headrest swings automatically with respect to the backrest support frame in accordance with the reclining operation of the backrest support frame . Left and right side frames connected to the front legs;
A frame mounting member attached to the rear end of each side frame;
A bracket pivotally attached to the frame mounting member, and a bracket pivotally attached to the rear leg;
Left and right side plates connected to each frame mounting member so as to be swingable at the tip,
A back support frame that is swingably connected to the left and right frame mounting members;
A headrest connected to the backrest support frame in a swingable manner at the lower end;
Left and right armrests with front and rear legs connected,
Left and right side vertical pipes pivotably connected to the frame mounting member and the armrest,
A reclining adjustment belt fixed to the left and right side vertical pipes and supporting the backrest support frame from the back side, the reclining adjustment belt capable of adjusting its length,
The backrest support frame is a U-shaped frame that can support the base sheet,
A stroller in which both side portions of the headrest are pivotally attached to the side plate, and the headrest swings automatically with respect to the backrest support frame in accordance with the reclining operation of the backrest support frame .   The headrest is swung in a direction in which the headrest rises with respect to the backrest support frame when the backrest support frame is swung downward. The stroller described.   The stroller according to any one of claims 1 to 5, wherein the headrest has left and right pins projecting on both sides, and each side plate has a long hole for receiving a pin on a corresponding side of the headrest.   A front upper connecting stay for connecting the left and right side frames;
  A U-shaped seat support frame composed of the left and right side frames and the front upper connection stay, and a base sheet stretched on the backrest support frame formed in an inverted U shape; The stroller according to any one of claims 1 to 6.   The stroller according to any one of claims 1 to 7, wherein the side plate is swingably connected to the frame mounting member at a position above the swing shaft of the backrest support frame.

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