JP5489834B2 - Folding baby carriage - Google Patents

Description

  The present invention relates to a foldable baby carriage in which a front leg is rotatably connected to a push rod, and the front leg is turned around the connecting portion and is folded so as to approach the push rod.

  As a folding baby carriage, conventionally, for example, the one described in Japanese Patent Application Laid-Open No. 2003-31485 (Patent Document 1) is known. The foldable baby carriage described in Patent Document 1 is unfolded so that the handle shaft and the front support leg are in a substantially straight line during use, and is folded so that the handle shaft and the front support leg are close to each other when not in use. Is. A front wheel is attached to the lower end portion of the front support leg, and the upper end portion of the front support leg is rotatably connected to the lower end portion of the handle shaft as a frame that supports the left and right sides of the seat seat. .

  At the time of folding, the front support legs rotate and move so as to be adjacent to each other in front of the handle shaft with the rotation connection portion as the center. Specifically, the operator holds an arbitrary part of the front support leg, applies a forward upward rotation moment to pull up the front support leg upward, and sets the lower end of the front support leg around the rotation connection point of the upper end of the front support leg. The front wheel of the part is displaced upward. Thus, the baby carriage is folded from the unfolded state. Then, the rear wheel comes to ground, the front wheel rises to the vicinity of the handle curved at the upper end of the handle shaft, and the baby carriage stands upright.

  Alternatively, in another conventional example, the operator grasps an arbitrary part of the handle shaft, applies a forward and downward turning moment, tilts the handle shaft forward, then tilts the handle shaft further downward, The handle shaft is displaced downward with the pivot coupling point as the pivot center. Thus, the baby carriage is folded from the unfolded state. Then, with the front wheel and the rear wheel in contact with the ground, the handle curved at the upper end of the handle shaft is lowered to the vicinity of the front wheel, and the baby carriage is placed horizontally.

JP2003-31485A (FIG. 2)

  However, the conventional folding baby carriage has the following problems. That is, there is a concern that the finger of the hand may be sandwiched between the front support leg and the handle shaft in order for the operator's hand to grip any part of the front support leg or the handle shaft and fold the baby carriage. In view of the above circumstances, an object of the present invention is to provide a baby carriage that can be safely folded.

  For this purpose, the foldable baby carriage according to the present invention includes a push bar extending in a vertical direction, a top end pivotably connected to a central region of the push bar, a rear leg having a rear wheel at a lower end, The upper leg is pivotably connected to the lower end of the push rod, the front leg having the front wheel at the lower end, the front part is pivotally connected to the central area of the front leg, and the rear part is the rear leg. And a gripping member provided on the front leg for pulling the front leg upward with the upper end of the front leg as a center of rotation during folding operation.

  According to the present invention, since the gripping member for pulling up the front leg is provided on the front leg, the operator holds the gripping member dedicated for folding. Therefore, the operator's hand can be set to an appropriate position instead of an arbitrary position, and the baby carriage can be safely folded.

  The shape and material of the gripping member are not particularly limited as long as the gripping member gives an upward rotational moment to the front leg in order to raise the front leg upward with the upper end of the front leg as the rotational center. For example, the gripping member may have a hook shape such as a bar shape that protrudes upward from the front leg and extends parallel to the front leg.

The gripping member of the present invention has a handle in which a hole for inserting the operator's finger is formed. According to the present invention , it is easy for the operator to grip, and the operation of pulling the front leg upward by applying force can be easily performed. The shape of the handle may be a shape suitable for inserting four fingers other than the thumb (first finger) and applying an upward turning moment to the handle with the second to fifth fingers. .

The handle of the present invention is attached to the front leg so as to be pivotable, and can be pivotally moved to a position protruding forward and upward from the attachment location and a position protruding rearward and downward from the attachment location. It is. According to the present invention , while the operator does not grip the handle, the handle is rotated to a position where it protrudes rearward and downward from the front leg by its own weight. Therefore, when the baby carriage is in the unfolded state and used, the handle is placed in an inconspicuous position from the view of the child seated on the child seat, and the foot region of the child can be gathered cleanly. The handle may be returned to a position protruding rearward and downward from the front leg by an urging means such as a spring in addition to the self-weight.

As another embodiment of the present invention, the gripping member has a belts member, and a connector which is pivotally attached to the front leg connecting the lower end of the belt member. According to such an embodiment, the operator does not need to directly grip the front leg by hand as in the conventional case, and can pull up the belt member by hand. Therefore, the baby carriage can be folded safely. In addition, when folding a conventional baby carriage, the operator has to bend forward excessively and must apply a turning moment to the front legs, which places a burden on the operator's body. On the other hand, according to the present embodiment, the baby carriage can be folded if the belt member is grasped and pulled up without taking a forward bending posture. Therefore, the folding operation for pulling up the front wheel to the push rod can be performed in an easy posture, and the baby carriage can be easily folded.

  The belt member usually hangs downward from the front leg due to its own weight, but the belt member held by the operator extends at least in the vertical direction, and the lower end of the belt member is connected to the front leg. On the other hand, the upper end of the belt member may be a free end that is not connected to either, but preferably the upper end of the belt member is connected to a member above the upper end of the front leg.

The connector of the present invention is pivotally attached to the front leg and protrudes from the attachment point toward the front side or the upper side, and protrudes from the position along the front leg or the attachment point toward the rear side or the lower side. It can be rotated to the position.

  According to this embodiment, while the operator does not grasp and pull the belt member, the coupling tool rotates and stops by its own weight to a position along the front leg or a position protruding rearward or downward from the front leg. Accordingly, when the baby carriage is in the unfolded state, the connector and the lower end of the belt member are placed inconspicuous positions from the view of the child seated on the child seat, and the child's foot area can be neatly collected. The connecting tool may be biased by a biasing means such as a spring to a position along the front leg or a position protruding rearward or downward from the front leg.

In the case where the lower end of the belt member is positioned on the front side of the front leg, coupling may serve as an arm protruding from the front leg. Therefore, even when the operator pulls the belt member in a direction parallel to the front leg, the front leg can be rotated by applying a turning moment, and the baby carriage can be folded more easily.

Preferably, the upper end of the belt member is connected to the push rod. According to this embodiment, the operator can grip the belt member at a position above the upper end of the front leg. Therefore, the operator can fold the baby carriage without having to lean forward, and the operation performance of the folding baby carriage is significantly improved.

Further, it is possible to prevent the belt member from being grounded due to excessive drooping of the belt member. Further, the operator can carry the folded baby carriage by grasping the belt member. Therefore, the carrying performance of the baby carriage in the folded state is improved.

  As described above, the present invention is provided with a gripping member that is provided on the front leg to lift the front leg upward with the upper end of the front leg as the center of rotation during the folding operation and can be gripped by the operator. Compared to the conventional example in which the position to be placed is arbitrarily left, it is possible to place the operator's hand in an appropriate position. Therefore, the safety performance at the time of folding improves.

1 is a skeleton diagram showing a foldable baby carriage according to the present invention, showing an unfolded state. 1 is a skeleton diagram showing a folding baby carriage according to the present invention, showing a folded state. It is a schematic perspective view which shows the foldable baby carriage which becomes one Example of this invention. It is a side view which shows the expansion | deployment state of the Example. It is a perspective view which shows typically the simultaneous brake mechanism of the Example. FIG. 5 is a side view showing the rear wheel and the simultaneous brake mechanism in FIG. It is a side view which shows the folding state of the Example. FIG. 8 is a side view showing the rear wheel and the simultaneous brake mechanism extracted from FIG. 7. It is a side view which shows the folding type baby carriage which becomes the other Example of this invention. It is a side view which shows the foldable baby carriage which becomes further another Example of this invention. It is a side view which shows the foldable baby carriage which becomes another Example of this invention. It is a side view which shows the folding type baby carriage which becomes another Example of this invention, and shows a normal state. It is a side view which shows the state which pulled the belt member of the Example shown in FIG. 12 upwards.

  Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings. First, the basic configuration of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 is a skeleton diagram showing a foldable baby carriage according to an embodiment of the present invention and shows an unfolded state. FIG. 2 is a skeleton diagram showing a foldable baby carriage according to an embodiment of the present invention, and shows a folded state. 1 and 2 show a state seen from the right side of the baby carriage. The foldable baby carriage 11 includes a right wheel 12 and a simultaneous brake mechanism 38 that simultaneously controls the rotation of a left wheel (not shown) hidden behind the right wheel 12, and can be folded so that the left wheel and the right wheel 12 have a vertically long shape approaching each other. It is.

  The baby carriage 11 includes a front leg 16 having a front wheel 14 at the lower end and a rear leg 18 having a right wheel 12 as a rear wheel at the lower end. The front leg 16 and the rear leg 18 are respectively provided on the left side and the right side in the width direction of the baby carriage 11, and the baby carriage 11 has four wheels on the front, rear, left and right.

  The push bar 22 of the baby carriage 11 extending obliquely in the vertical direction has a pivot shaft 20 in the middle of its upper end, and is connected to the upper end of the rear leg 18 via the pivot shaft 20. The push rod 22 has a handle portion 24 above the pivot shaft 20. An operator (not shown) stands behind the baby carriage 11, holds the right handle portion 24 and the left handle portion, and pushes the baby carriage 11 forward. The lower end of the push rod 22 is connected to the upper end of the front leg 16 via the rotation shaft 26. A pivot shaft 28 is provided in the middle of the center portion of the front leg 16, and a pivot shaft 30 is provided in the middle of the lower end portion of the rear leg 18. The front leg 16 and the rear leg 18 support the seat frame material 32 via these pivot shafts 28 and 30.

  In the unfolded state of the baby carriage 11, the push rod 22 and the front leg 16 are inclined and extend in the vertical direction, and the upper end of the rear leg 18 is rotatably connected to the central region of the push rod 22, that is, the region excluding the upper and lower ends. Is done. Further, the front portion of the seat frame material 32 is rotatably connected to the central region of the front leg 16, that is, the region excluding the upper and lower ends, and the rear portion of the seat frame material 32 is rotatable to the rear leg 18. Connected to The front leg 16, the push bar 22, the rear leg 18, and the seat frame material 32 form a triangle on the right side of the baby carriage 11 as shown in FIG. The same applies to the left side of the baby carriage 11.

  The X-shaped frame 34 installed below the seat frame material 32 has an X-shape in plan view, and connects the lower ends of the right front leg 16 and the left rear leg (not shown) to each other. The lower end portions of the left front leg and the right rear leg 18 are connected to each other. The X-shaped frame 34 formed by intersecting two bars is provided with a rotation shaft indicated by a one-dot chain line in FIG. 1 at the intersection, and the centers of these bars are coupled so as to be relatively rotatable. Further, the X-shaped frame 34 is provided with pivot shafts indicated by a one-dot chain line in FIG. 1 at four positions on both ends thereof, and is pivotally connected to the left and right front legs and rear legs.

  A V-shaped frame 36 having a V-shape when the stroller 11 is viewed from the rear is installed between the central portion of the right rear leg 18 and the central portion of the left rear leg. The V-shaped frame 36 is formed by connecting one ends of two bar members so as to be relatively rotatable, and the angle between the two bar members is variable at the connection point. The rotation axis of the connection point is shown by a one-dot chain line in FIG. Further, the V-shaped frame 36 is rotatably connected to the left and right rear legs at two positions on both ends thereof via a rotating shaft indicated by a one-dot chain line in FIG. Therefore, it is to be understood that when the distance between the left and right rear legs remains parallel to each other, the angle between the two bars formed by the V-shaped frame 36 decreases.

  The X-shaped frame 34 and the V-shaped frame 36 suitably maintain the width of the baby carriage 11 in both the expanded state and the folded state. As will be described in detail later, in a folded state in which the vehicle width dimension is reduced, the X-shaped frame 34 is deformed so as to extend in the front-rear direction, and the V-shaped frame 36 is deformed so as to extend in the vertical direction. Move the left and right rear legs closer together. Note that the baby carriage 11 is provided with a holding mechanism (not shown), and the holding mechanism holds the baby carriage 11 in a deployed state. Therefore, the stroller 11 in the unfolded state is not carelessly folded or vice versa.

  The left and right push bars, the left and right seat frame members, the X-shaped frame 34, and the V-shaped frame 36 are a plurality of frames connected to each other, and support a child seat (not shown). For example, a child seat has a cloth hammock structure, a cloth backrest portion is spanned between left and right push rods, and a cloth seat portion is spanned between right and left seat frame materials. As shown in FIG. 1, the baby carriage 11 is unfolded when in use, the distance between the frames is maintained at a constant distance, and the front leg 16 extends downward from a rotating shaft 26 that is a connection point with the push rod 22. . On the other hand, as shown in FIG. 2, the baby carriage 11 is folded when not in use, the distance between the frames is made narrower than a certain distance, and the front leg 16 is pivoted upward about the pivot shaft 26. Is done. The folded state will be described in detail later.

  A simultaneous brake mechanism 38 is provided between the lower end of the right rear leg 18 and the lower end of the left rear leg. The simultaneous brake mechanism 38 has a member that restricts the rotation of the left rear wheel, a member that restricts the rotation of the right rear wheel, and a connecting mechanism that connects these left and right restricting members. It can be regulated at the same time. The simultaneous brake mechanism 38 operates on the left and right rear wheels simultaneously by being operated by the operator, and restricts the rotation of the left and right rear wheels at the same time, or releases the rotation restriction to freely rotate the left and right rear wheels. Is acceptable. In the deployed state of the baby carriage 11, the front wheel 14 and the rear wheel 12 are both in contact with the flat ground contact surface G as shown in FIG. However, the simultaneous brake mechanism 38 is separated from the ground plane G. As a result, the baby carriage 11 can smoothly travel in the released state of the simultaneous brake mechanism 38. In addition, while the simultaneous brake mechanism 38 restricts the rotation of the left and right rear wheels, the baby carriage 11 stops.

  A gripping member 71 is provided on the front leg 16. The gripping member 71 is provided on the front leg 16 so as to protrude from the front leg 16 to the front side, and has a shape that can be gripped by the operator. The gripping member 71 has, for example, a hook shape that is cantilevered by the front leg 16. Or it has the handle 72 in which the long hole into which an operator's 2nd-5th finger | toe is inserted simultaneously was formed as mentioned later. Alternatively, as described later, the belt member extends from the front leg 16. The gripping member 71 is provided at a position separated from the rotation shaft 26, for example, above the front wheel 14 and below the pivot shaft 28.

  The operation of changing the stroller 11 from the expanded state (FIG. 1) to the folded state (FIG. 2) will be described below.

  First, when the operator releases the holding mechanism (not shown), grasps the handle 72 of the gripping member 71 with one hand, and pulls the gripping member 71 upward, the front leg 16 holds the gripping member 71 around the pivot shaft 26 as the pivot center. At the same time, it is pulled upward. As a result, the push rod 22 and the front leg 16 that extend in a straight line in the unfolded state are folded at the rotation shaft 26.

  Next, when the operator's other hand is attached to the handle portion 24 and the gripping member 71 is continuously lifted upward with one hand, the front leg 16 turns around in front of the push bar 22 and the front leg 16 is further raised to push the push bar. Approach 22 Thus, as shown in FIG. 2, the front wheel 14 approaches the handle portion 24, and the baby carriage 11 is folded. However, in the folded state, a predetermined gap larger than the thickness of the finger of the operator's hand that is an adult is left between the adjacent push rod 22 and the front leg 16. The front leg 16 does not approach the push rod 22 more than a predetermined gap.

  In the form change of the baby carriage 11 that is deformed from the unfolded state of FIG. 1 to the folded state of FIG. 2, the X-shaped frame 34 is compressed in the vehicle width direction while being stretched in the front-rear direction, and the V-shaped frame 36 is compressed in the vehicle width direction while being extended in the vertical direction. Thereby, the width dimension of the left and right baby carriages is reduced, and the baby carriage 11 has a vertically long shape in which the left and right wheels approach each other. That is, the left and right rear legs approach each other, the left and right front legs approach each other, the left and right diagonal members approach each other, and the left and right seat frame members approach each other.

  In addition, the gripping member 71 is applicable to an embodiment (not shown) that is not reduced in the vehicle width direction but reduced in the front-rear direction.

  With the reduction deformation between the left and right in the vehicle width direction, the rear leg 18 rotates about the pivot shaft 20 as a rotation center, and the rear leg 18 is displaced to the vicinity of the push rod 22. Further, the seat frame material 32 rotates around the pivot shafts 28 and 30 and extends substantially parallel to the front leg 16, the rear leg 18 and the push rod 22. Thus, the front leg 16, the rear leg 18, the push rod 22, and the seat frame material 32 that form a triangle in the unfolded state are in a vertically elongated shape that is substantially parallel to each other in the folded state. However, the aforementioned predetermined gap is interposed between the adjacent push rod 22 and the front leg 16. Thereby, even if the finger of the operator's hand is located in the vicinity of the rotation shaft 26, the finger is not caught between the push rod 22 and the front leg 16.

  In the stroller 11 that is vertically long in the folded state, the left wheel and the right wheel approach each other in the vehicle width direction, and the front wheel moves forward and upward of the vehicle body to move away from the rear wheel. Note that the X-shaped frame 34 is not shown in FIG. 2 in order to avoid complexity of the drawing.

  Further, the simultaneous brake mechanism 38 is deformed along with the reduction deformation between the left and right in the vehicle width direction. Specifically, the connecting mechanism of the simultaneous brake mechanism 38 is deformed, and the grounding portion 38l of the connecting mechanism is grounded to the ground plane G as shown in FIG. Further, the right rear wheel 12 and the left rear wheel contact the ground plane G. Thereby, the baby carriage 11 is supported at three points, and the baby carriage 11 in a folded state having a vertically long shape stands upright independently.

  It should be understood that the connecting mechanism of the simultaneous brake mechanism 38 has a predetermined vehicle width direction dimension between the left and right, and that the dimension between the upper and lower sides increases when the dimension between the left and right is reduced. The coupling mechanism is not particularly limited as long as it has sufficient rigidity to make the baby carriage stand upright and deforms between the folded state and the unfolded state of the baby carriage.

  Next, an embodiment in which the gripping member has a handle will be described with reference to FIGS. FIG. 3 is a schematic perspective view showing a folding baby carriage according to an embodiment of the present invention. FIG. 4 is a side view showing a state of the embodiment as viewed from the right side. FIG. 5 is a perspective view schematically showing the simultaneous brake mechanism of the embodiment. FIG. 6 is a side view showing the rear wheel and the simultaneous brake mechanism in FIG. 4 taken out, and the lower end portion of the rear leg 18 to which the rear wheel 12 is attached is omitted for easy understanding. 4 and 6 show a state in which the simultaneous brake is released. 3, 4 and 6 all show the unfolded state. FIG. 5 is common to the unfolded state and the folded state. FIG. 7 and FIG. 8 described later show the folded state.

  In this embodiment, the same reference numerals are assigned to the components common to the basic components described above, and the description thereof is omitted. Different components will be described below. In the baby carriage 41 of this embodiment, as shown in FIGS. 3 and 4, the total length of the rear leg 18 is shortened and the upper end of the rear leg 18 is connected to the middle of the lower end of the push rod 22. Further, instead of the V-shaped frame 36, an X-shaped frame 42 is installed between the left and right sides. In the perspective view of FIG. 3, reference numerals 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33 are attached to members on the left side of the baby carriage 41. It should be understood that these are symmetrical with the members on the right side described above with reference numerals 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32.

  The X-shaped frame 42 is obtained by intersecting the center portions of the two bar members 42l and 42m, and the two bar members are connected so as to be relatively rotatable at the center intersection. The right push bar 22 is pivotally coupled to the upper end of the bar 42l via a coupling point 44 in the middle of the lower part than the handle portion 24. The left push bar 23 is also pivotably coupled to the upper end of the bar 42m via a coupling point 45 in the middle of the handle unit 25. The lower end of the bar 42l is rotatably connected to the middle of the lower end of the left rear leg 19. The lower end of the bar 42m is pivotably connected to the middle of the lower end of the right rear leg 18.

  A holding mechanism is installed at the lower end of the bar 42l and the lower end of the bar 42m. The holding mechanism includes a right member 46 that is rotatably connected to the bar 42m, a left member 47 that is rotatably connected to the bar 42l, and a right member 46 and a left member 47 that are rotatably connected to each other. And a lock lever 48 for fixing the positional relationship with the. In the deployed state of the baby carriage 41, the lock lever 48 keeps the vehicle width dimension between the left side and the right side of the baby carriage 41 constant. Thereby, the baby carriage 41 in the unfolded state is not carelessly folded.

  When the operator of the baby carriage 41 releases the lock lever 48, the vehicle width dimension between the left side and the right side of the baby carriage 41 can be reduced. Thereby, the baby carriage 41 can be folded. In the folded state, the X-shaped frame 42 rotates around the connection points 44 and 45 at the upper end, rotates around the connection point at the lower end, and rotates and deforms at the central intersection, thereby pushing bar 22. , Approach 23. At the same time, the X-shaped frame 42 is elongated in the vertical direction and shortened in the vehicle width direction, the push rods 22 and 23 approach each other, and the rear legs 18 and 19 approach each other. Thus, the baby carriage 41 is folded as shown in a side view in FIG.

  The outline of the right rear wheel 12 (hereinafter referred to as the right wheel 12) and the left rear wheel 13 (hereinafter referred to as the left wheel 13) will be described with reference to FIGS. The lower end of the right rear leg 18 is joined to the center of the axle extending left and right. One right wheel is rotatably attached to one end of the axle on the left side in the vehicle width direction. Another right wheel is rotatably attached to the other end of the axle on the right side in the vehicle width direction. Thus, the right wheel 12 has a double-wheel structure that is coaxially arranged on a common axle. Of the both surfaces of the right wheel located on the inner side in the vehicle width direction, ribs 52 are formed radially on the outer surface in the vehicle width direction with the axle as the center. The rib 52 protrudes from the outer surface in the vehicle width direction of the right wheel, and can receive an engaging portion 54 described later between the ribs 52 and 52 adjacent in the circumferential direction. In this embodiment, eight ribs 52 are formed at equal intervals in the circumferential direction, but the interval and the number of right wheel ribs 52 are not limited.

  The left wheel 13 also has the same double wheel structure as the right wheel 12, and has a double wheel structure including one left wheel and the other left wheel. Eight similar ribs are formed at equal intervals in the circumferential direction on the left wheel located on the inner side in the vehicle width direction. And between the adjacent ribs, the engaging part 55 mentioned later can be received. The interval and the number of left wheel ribs are not limited.

  A right wheel restricting member 56 extends between the right wheel 12 and the rear leg 18 located on the inner side in the vehicle width direction. The right wheel restricting member 56 extends substantially in the front-rear direction of the vehicle body, and its front end and rear end protrude from the right wheel 12 respectively. A lever 56 l is formed at the rear end of the right wheel restricting member 56. The front end of the right wheel restricting member 56 is connected to the connecting mechanism 60. The right wheel restricting member 56 is rotatably supported by the lower end portion of the rear leg 18 via the pivot shaft 56p at the center portion in the front-rear direction. An engaging portion 54 is formed between the pivot shaft 56p and the lever 56l. The engaging portion 54 is a protrusion that protrudes toward the right wheel 12 located on the inner side in the vehicle width direction. When the baby carriage 41 travels, the engaging portion 54 is not interposed between the ribs 52, 52 as shown in FIG. 6, and the wheel 12 can freely rotate. Although a detailed description is omitted, as shown in FIG. 5, the left wheel restricting member 57 is also configured in common with the right wheel restricting member 56 and is disposed in the vicinity of the left wheel 13.

  The connecting mechanism 60 is connected to the left link 63 connected to the left wheel restricting member 57 at the left end, the right link 62 connected to the right wheel restricting member 56 at the right end, the right end of the left link 63 and the left end of the right link 62, and is grounded. A central member 61 including a portion 38l. The left link 63 and the right link 62 are rod-shaped square members and have rigidity. The central member 61 has a shape like an isosceles trapezoid whose lower side is longer than the upper side, and has rigidity. The left and right oblique sides of the isosceles trapezoid are arranged on the left and right sides of the baby carriage 41, respectively. The left side link 63 is rotatably connected to the left side in the vehicle width direction and the right link 62 is rotatably connected to the right side in the vehicle width direction on the upper side of the central member 61.

  A grounding portion 38 l is formed on the lower side of the central member 61. In FIG. 6, which is a side view of the baby carriage 41, the central member 61 is disposed in an upright posture in a substantially vertical direction, and the thickness thereof is shown. In comparison, the upper side of the central member 61 is disposed upward, and the lower side of the central member 61 is disposed downward. As shown in FIGS. 4 and 6, the grounding portion 38 l is separated from the grounding surface G in the unfolded state.

  The left and right connecting portions of the right link 62 and the left and right connecting portions of the left link 63 each have a rotation axis extending in the longitudinal direction of the vehicle body. Therefore, the central member 61, the right link 62, and the left link 63 can be relatively rotated on the same virtual plane, and the connecting mechanism 60 can bend and stretch in the width direction of the baby carriage 41. The left and right links 62 and 63 form a V shape, and the connection mechanism 60 expands in the vehicle width direction when the angle between the left and right links 62 and 63 increases. On the contrary, when the angle between the left and right links 62 and 63 is reduced, the connecting mechanism 60 is reduced in the vehicle width direction.

  As shown in FIGS. 4 and 6, when the baby carriage 41 is in the deployed state, the ground contact portion 38 l is positioned above the ground contact surface G of the left and right wheels 12, 13. This is because the angle between the left and right side links 62 and 63 constituting the V-shape is increased and the connecting mechanism 60 is expanded in the vehicle width direction, and the central member 61 is lifted upward by the left and right side links 62 and 63. This is because.

  When the operator desires to stop the baby carriage 41 and depresses the right lever 56l as shown by the arrow in FIG. 6, the right restricting member 56 rotates about the pivot shaft 56p, and the engaging portion 54 Is displaced downward and enters between the adjacent ribs 52, 52. This restricts the rotation of the rear wheel 12a.

  At the same time as the operator steps on the right lever 56l, the front end of the right regulating member 56 and the coupling mechanism 60 are lifted upward as shown by the arrows in FIG. 6, and the front end of the left regulating member 57 is also lifted upward. That is, the left regulating member 57 also rotates about its own pivot shaft 57p. As a result, the engaging portion 55 of the left regulating member 57 is displaced downward and enters between adjacent ribs of the rear wheel 13. As a result, the rotation of the rear wheel 13 is restricted. Thus, the baby carriage 41 is brought into the simultaneous braking state and disabled. According to the present embodiment, when the operator depresses one of the left and right levers 56l and 57l, both the wheels 12 and 13 can be made unrotatable. Although not described in detail, it goes without saying that not only the left wheel 13 but also the right wheel 12 cannot be rotated simultaneously even if the operator steps on the left lever 571.

  According to the present embodiment, when the operator operates the simultaneous brake, the connecting mechanism 60 is lifted without being expanded or contracted, so that the right and left wheel restricting members 56 and 57 can be simultaneously rotated.

  FIG. 7 is a side view of the folded state of the baby carriage 41 as viewed from the right. In order to avoid the complexity of the drawing and facilitate understanding, the seat frame material 32 and the X-shaped frames 34 and 42 are not shown in FIG. FIG. 8 is an enlarged side view showing the rear wheel of FIG. For ease of understanding, the lower end of the rear leg 18 is omitted in FIG. As shown in FIGS. 7 and 8, the ground contact portion 38l contacts the ground contact surface G of the left and right wheels together with the left wheel 13 and the right wheel 12 in a folded state of the baby carriage 41 to make the baby carriage 41 upright and independent.

  In the folded state, the coupling mechanism 60 is compressed in the vehicle width direction and contracted in the vehicle width direction, and the central member 61 is displaced downward. Specifically, the left link 63 rotates with a connection point between the left wheel restriction member 57 and the left link 63 as a fulcrum, and the right link 62 rotates with a connection point between the right wheel restriction member 56 and the right link 62 as a fulcrum. Then, the angle between the left and right side links 62, 63 constituting the V shape is reduced, the central member 61 is displaced downward, and the grounding portion 38l is grounded to the grounding surface G.

  According to this embodiment, when the operator folds the baby carriage 41, the coupling mechanism 60 is deformed and the central member 61 is displaced, so that the baby carriage 41 is automatically brought into an upright and independent state in conjunction with the operator's folding operation. The handling performance is excellent. The unused baby carriage 41 does not take up space.

  Here, the operation of folding the baby carriage 41 when the baby carriage 41 is not used will be described.

  First, in the stroller 41 in the unfolded state shown in FIG. 4, when the operator grasps the gripping member 71 with one hand and pulls the gripping member 71 upward, the push rod 22 and the front leg 16 that have been aligned so far are It is bent at the rotation shaft 26 and formed into a dogleg shape. Next, when the operator attaches the other hand to the handle portion 24 and applies a downward force to the handle portion 24 and pulls the gripping member 71 upward with one hand, the front leg 16 rotates and moves. Thus, the baby carriage 41 is brought into the folded state shown in FIG.

  The gripping member 71 has a handle 72. In the embodiment shown in FIGS. 3 and 4, the handle 72 has a long hole through which the operator's second to fifth fingers are passed. The long hole extends along the front leg 16 and has a length necessary and sufficient to pass the second to fifth fingers together. The operator can firmly grip the handle 72 by attaching the first finger to the handle 72 from the outside of the handle 72 while passing the second to fifth fingers through the hole of the handle 72. The gripping member 71 is formed in a shape that can be easily gripped by the operator's hand, and the operator can easily lift the front leg 16 by gripping the gripping member 71.

  The gripping member 71 is rotatably attached to the front leg 16 with the central axis of the front leg 16 as the center of rotation. For this reason, the gripping member 71 protrudes from the attachment location on the front leg 16 indicated by a solid line in FIG. 4 toward the rear side and the lower side, and from the attachment location indicated by a two-dot chain line in FIG. It can be pivoted to the protruding position. Normally, as indicated by a solid line in FIG. 4, the gripping member 71 is present at a position protruding rearward and downward from the front leg 16 due to its own weight.

  According to this embodiment, since the gripping member 71 for pulling up the front leg 16 is provided on the front leg, the operator holds the gripping member 71 dedicated for folding. Therefore, the operator's hand can be set to an appropriate position instead of an arbitrary position, and the baby carriage 41 can be safely folded.

  Further, according to this embodiment, in the unfolded state of the baby carriage 41, the gripping member 71 can be positioned behind the front leg 16 so that the feet of the child sitting on the child seat can be cleaned. .

  Further, according to this embodiment, since the gripping member 71 is rotatably provided, it can be rotated and moved inward in the vehicle width direction in the folded state shown in FIG. Therefore, the gripping member 71 does not protrude outward in the vehicle width direction in the folded state, and the baby carriage 41 that is not in use can be gathered into a clean shape.

  On the other hand, when the operator grips the gripping member 71 and pulls up the gripping member 71 to fold the baby carriage 41, the gripping member 71 moves from the front leg 16 toward the front side and upward as shown by a two-dot chain line in FIG. It pivots to the protruding position.

  The material of the gripping member 71 is an elastically deformable material such as a rubber material. Or the holding member 71 may be formed with the cloth containing a shape-retaining material.

  Next, another embodiment of the present invention will be described. FIG. 9 is a side view showing another embodiment of the present invention, showing an enlarged peripheral region including a handle, and corresponds to FIGS. 1 and 4 described above. In other embodiments, the same components as those in the above-described embodiments are denoted by the same reference numerals, description thereof is omitted, and different configurations are described below. In another embodiment, the handle 72 is fixed to the front side of the front leg 16. Enlarge the handle. According to the embodiment shown in FIG. 9, since the handle fixed to the front side of the front leg protrudes upward from the front leg when viewed from the portion of the entire front leg located near the gripping member, the operator holds the handle. Just pull it up. Therefore, the operator's hand can be set to an appropriate position instead of an arbitrary position, and the baby carriage can be safely folded.

  In the embodiment shown in FIG. 9, the material of the gripping member 71 is a rubber material that can be elastically deformed. According to this embodiment, even when a child's foot sitting on the child's seat collides with the gripping member 71, the impact can be mitigated, and riding comfort performance is improved.

  Next, still another embodiment of the present invention will be described. FIG. 10 is a side view showing still another embodiment of the present invention and corresponds to FIG. 1 and FIG. 4 described above. Further, with respect to other embodiments, the same components as those in the above-described embodiments are denoted by the same reference numerals, description thereof will be omitted, and different configurations will be described below. In another embodiment, instead of the gripping member 71, a belt member 81 is stretched between the front leg 16 of the baby carriage 51 and the push bar 22. The belt member 81 is obtained by sewing a fabric into a belt shape. The upper end of the belt member 81 is connected to a coupling portion 24 c adjacent to the lower end portion of the handle portion 24. The lower end of the belt member 81 is a position separated from the rotation shaft 26 and is connected to the coupling portion 16 c located at the lower end portion of the front leg 16. In the unfolded state, the entire length of the belt member 81 is longer than the linear distance between the coupling location 24c and the coupling location 16c. Therefore, as shown in FIG. 10, the operator can lift the belt member 81 extending from the front leg 16 separately from the push rod 22 and the front leg 16. Normally, the belt member 81 hangs below the push rod 22 and the front leg 16. Alternatively, it is held below the push rod 22 and the front leg 16.

  Here, the operation of folding the baby carriage 51 when the baby carriage 51 is not used will be described.

First, in the stroller 51 in the unfolded state shown in FIG. 10, when one hand grasps the portion 81 c slightly on the lower end side from the center of the belt member 81 that is a gripping member and pulls the belt member 81 upward, The push rods 22 and the front legs 16 that are aligned in a straight line are folded at the rotation shaft 26 to form a dogleg shape. Next, when the operator attaches the other hand to the handle portion 24 and applies a downward force to the handle portion 24 and pulls the gripping member 71 upward with one hand, the front leg 16 rotates and moves. As described above, the baby carriage 51 is folded in the same manner as in the embodiment shown in FIG.

  According to this embodiment, when the operator applies a force to the belt member 81 and pulls it up, the operator does not need to bend forward, and the folding operation performance is improved.

  Further, according to this embodiment, the folded baby carriage 51 can be transported by wrapping the belt member 81 around the operator's shoulder. Therefore, the carrying performance of the baby carriage is improved.

  Next, another embodiment of the present invention will be described. FIG. 11 is a side view showing a foldable baby carriage according to another embodiment of the present invention, showing an enlarged peripheral region including the lower end of the belt member, and corresponds to FIGS. 1 and 10 described above. With respect to another embodiment, the same reference numerals are assigned to configurations common to the above-described embodiments, and description thereof is omitted, and different configurations will be described below. In another embodiment, instead of connecting the lower end of the belt member 81 directly to the front leg 16, a connecting tool 82 is interposed. That is, the baby carriage has a belt member 81 as a gripping member, and a connector 82 interposed between the lower end of the belt member 81 and the front leg 16.

  The connecting tool 82 is attached to the front side of the front leg 16. The lower end of the belt member 81 is sewn so as to form a ring, and a column formed at the tip of the connector 82 passes through the ring. Thus, by connecting the lower end of the belt member 81 and the connecting tool 82, the connecting tool 82 connects the lower end of the belt member 81 and the front leg 16 to each other.

  Furthermore, the connecting tool 82 is fixed to the front side of the front leg 16.

  According to the embodiment shown in FIG. 11, since the connecting tool 82 attached to the front side of the front leg 16 is interposed between the lower end of the belt member 81 and the front leg 16, the arm from which the connecting tool 82 protrudes from the front leg 16 is provided. It plays the role of a member. Accordingly, even if the operator pulls the belt member 81 in the vertical direction and the operator pulls the belt member 81 in parallel with the extending direction of the front leg 16, a turning moment about the turning shaft 26 is applied to the front leg 16. The belt member 81 can be easily pulled up during the folding operation.

  Next, another embodiment of the present invention will be described. 12 and 13 are side views showing a folding baby carriage according to still another embodiment of the present invention. FIG. 12 shows a normal time when the belt member is not pulled upward. On the other hand, FIG. 13 shows a state in which the belt member is pulled in a direction parallel to the front leg 16.

  The gripping member of the embodiment shown in FIG. 12 has a connecting member 83 that has substantially the same width as the width dimension of the front leg 16 and extends along the front leg 16. One end of the coupling tool 83 is pivotally attached to the front leg 16 by a pivot shaft 84 extending in the vehicle width direction, and the other end of the coupling tool 83 is pivotable about the pivot shaft 84 as a pivot center. It is. Thus, the connector 83 can be rotated and moved to a position (FIG. 13) that protrudes forward and upward from the pivot shaft 84, which is an attachment location on the front leg 16, and a position (FIG. 12) along the front leg 16. it can. Usually, as shown in FIG. 12, it is set to a position along the front leg. A stopper 85 is formed on the rear side of the front leg 16. The stopper 85 prevents the connecting tool 83 from rotating beyond the front leg 16 to the rear side. The connecting tool 83 is urged toward the stopper 85 by a spring (not shown) and is normally positioned along the front leg 16.

  The lower end of the belt member 81 is connected to the other end side of the connector 83. Specifically, the lower end of the belt member 81 is sewn so as to form an annulus, and a pillar formed at the other end of the connector 83 passes through the annulus. Usually, the belt member 81 is located behind the connector 83 and the front leg 16 due to its own weight.

  When the operator grasps the belt member 81 and pulls it upward, the connector 83 rotates against the biasing force of the spring and rotates to a position protruding from the front leg toward the front side or the upper side. A stopper 86 is formed on the front side of the front leg 16. As shown in FIG. 13, the stopper 86 prevents the connecting tool 83 from rotating upward beyond the position where it protrudes forward and upward of the front leg 16. Between these stoppers 85, 86, the connecting tool 83 can be rotated and moved between a position protruding from the front leg 16 toward the front side and upward (FIG. 13) and a position along the front leg 16 (FIG. 12). .

  According to the embodiment shown in FIGS. 12 and 13, the connecting tool 83 is normally rotated and stopped at a position along the front leg 16. Therefore, during use with the baby carriage in the unfolded state, the lower ends of the connector 83 and the belt member 81 are made inconspicuous from the view of the child seated on the child seat, and the foot region of the child can be gathered cleanly. it can.

  Although not shown in the drawing, the connecting tool 82 is pivotally attached to the front leg 16 via a pivot shaft extending along the front leg 16, and a position protruding from the front leg 16 toward the front side and the front leg. It may be pivotable to a position protruding from 16 toward the rear side. According to such an embodiment, while the operator does not grasp the belt member 81, the coupling tool 82 is rotated and stopped at a position where it protrudes rearward from the front leg 16 by its own weight. Accordingly, when the baby carriage is in the unfolded state and used, the connector 82 and the lower end portion of the belt member are made inconspicuous from the view of the child seated on the child's seat, and the child's foot region can be neatly collected.

  Although not shown in the drawing, the upper end of the belt member may be connected to the upper end portion of the rear leg instead of the push rod.

  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 foldable baby carriage according to the present invention is advantageously used in a childcare device in which the front legs are lifted upward when the form changes from the expanded state to the folded state.

  11 Folding baby carriage, 12 Right wheel (rear wheel), 13 Left wheel (rear wheel), 14 Right wheel (front wheel), 15 Left wheel (front wheel), 16 Right front leg, 17 Left front leg, 18 Right rear leg, 19 Left rear leg , 20, 21 pivot shaft, 22 right push rod, 23 left push rod, 24, 25 handle portion, 26, 27 pivot shaft, 28, 30 pivot shaft, 32, 33 seat frame material, 34 X-shaped frame , 36 V-shaped frame, 38 simultaneous brake mechanism, 38l grounding part, 41 baby carriage, 42 X-shaped frame, 44, 45 connection point, 46 right side member, 47 left side member, 48 lock lever, 51 baby carriage, 52 right wheel rib, 54 , 55 engaging portion, 56 right wheel restricting member, 57 left wheel restricting member, 60 coupling mechanism, 61 center member, 62 right link, 63 left link. 71 gripping member, 72 handle, 81 belt member (gripping member), 82, 83 connector (gripping member), 84 pivot shaft, 85, 86 stopper.

Claims (3)

A push bar extending obliquely in the vertical direction;
A rear leg having an upper end pivotably connected to a central region of the push rod and having a rear wheel at a lower end;
A front leg having a front wheel at the lower end, extending in a vertical direction and having an upper end rotatably connected to the lower end of the push rod;
A frame material in which a front part is rotatably connected to a central region of the front leg and a rear part is rotatably connected to the rear leg;
A gripping member provided on the front leg to lift the front leg upward with the upper end of the front leg as a rotation center at the time of folding operation ;
The gripping member has a handle in which a hole for inserting an operator's finger is formed,
The handle is pivotally attached to the front leg, and can be pivoted to a position protruding forward and upward from the attachment location and a position protruding rearward and downward from the attachment location. There is a folding baby carriage. A push bar extending obliquely in the vertical direction;
A rear leg having an upper end pivotably connected to a central region of the push rod and having a rear wheel at a lower end;
A front leg having a front wheel at the lower end, extending in a vertical direction and having an upper end rotatably connected to the lower end of the push rod;
A frame material in which a front part is rotatably connected to a central region of the front leg and a rear part is rotatably connected to the rear leg;
A gripping member provided on the front leg to lift the front leg upward with the upper end of the front leg as a rotation center at the time of folding operation;
The gripping member has a belt member and a connecting member rotatably attached to the front leg and connected to a lower end of the belt member;
The connector can be pivotally moved to the front leg from a position protruding from the attachment location toward the front side or the upper side and a position along the front leg or a position protruding from the attachment location toward the rear side or the lower side. There is a folding baby carriage. The belt member has its upper end connected to the push rod, foldable baby carriage according to claim 2.

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