JP5992190B2 - Folding baby carriage - Google Patents

Description

  The present invention relates to a baby carriage provided with a push bar, which can be expanded when in use and can be folded when not in use, and in particular, the switching of the push bar which can be switched between a back push position and a face push position. Related to regulated technology.

  It has a body frame that includes the front leg, rear leg, seat frame, armrest, etc., which constitutes the main body of the baby carriage, and a push rod attached to the body frame. Some folding baby carriages that can be folded compactly can be switched between a back-side push position and a face-to-face push position by rotating a push rod in the front-rear direction in the unfolded state. Such a baby carriage is conventionally provided with a push rod locking mechanism that selectively holds the push rod in the back pushing position and the face pushing position.

  However, when the baby carriage is folded, the operator of the baby carriage may accidentally release the push bar lock mechanism. If it does so, a push rod will be made free to rotate with respect to a body frame, and there was a problem that a push rod passed through a body frame and rotated. Then, even if the operator holds either one of the push rod or the vehicle body frame, the remaining other falls.

  As a technique for solving such a problem of passing through the push rod, conventionally, for example, those described in Japanese Patent Application Laid-Open No. 2011-148449 (Patent Document 1) and Japanese Patent No. 4812948 (Patent Document 2) are known. Yes. In the baby carriages described in Patent Documents 1 and 2, a protruding member is formed on the armrest, and the protruding member is separated from the push rod locking mechanism in the deployed state of the baby carriage, thereby allowing the push rod locking mechanism to be operated. On the other hand, when the baby carriage is folded, the armrest is rotated, and in the folded state, the protruding member interferes with the push rod locking mechanism, thereby making it impossible to operate the push rod locking mechanism.

JP 2011-148449 A Japanese Patent No. 4812948

  However, the conventional baby carriage still has problems as described below. In other words, even if the push rod lock mechanism cannot be operated in the fully folded state and the push rod can be prevented from passing through, the baby carriage is still in the middle of the folded state from the unfolded state. The rotation of the push rod is not restricted. For this reason, the problem of passing through the push rod is still not solved. Push-throughs are particularly likely to occur during the folding operation.

  In view of the above circumstances, an object of the present invention is to provide a push-bar passage prevention structure that can prevent the push rod from passing through even when the baby carriage is being folded.

For this purpose, the foldable baby carriage according to the present invention includes a first frame, a second frame whose relative positional relationship with the first frame changes in the unfolded state, the folded state, and the folded state of the baby carriage, and the baby carriage. And a push bar that can be selectively switched between a back-side push position and a face-to-face push position. And between the 1st position on the movement path which is attached to the 1st frame so that movement is possible, and the predetermined part of a push bar moves between a back pushing position and a face pushing position, and the 2nd position separated from the movement path and blocking members movable, in response to the relative positional relationship between the first and second frame in the deployed state, maintaining the blocking member in the second position, the first and Keru Contact midway state and folded state folding of the baby carriage further Ru and a position adjusting means for maintaining the blocking member in response to relative positions of the second frame to the first position. The push bar is allowed to be switched by the blocking member placed in the second position in the unfolded state, and the push bar is made non-switchable by the blocking member placed in the first position in the folding state and in the folded state. To do.

  According to the present invention, when the folding operation of the baby carriage is started, the blocking member moves to the first position on the movement path of the push rod, and thus the rotation of the push rod is restricted in the middle of the folding state and in the folded state. . Therefore, even if the operator accidentally releases the push rod locking mechanism, the push rod does not rotate, and the push rod can be prevented from passing through.

  The unfolded state means that the baby carriage is completely expanded for use, and the folded state means that the baby carriage is completely reduced in size due to nonuse. , Each has one fixed shape. On the other hand, the folding state means a dynamic shape in which the baby carriage changes from the unfolded state to the folded state or vice versa, and should be understood as a form having a width that is not fixed to one.

  The first position of the blocking member only needs to be within the movement path of the push rod, and the second position of the blocking member only needs to be outside the movement path of the push rod, and the arrangement is not particularly limited. The blocking member only needs to move in a direction crossing the movement path, and the direction is not particularly limited. For example, the blocking member moves in the vertical direction. Alternatively, the blocking member may move in the width direction of the baby carriage.

  The blocking member may be provided on the first frame of the baby carriage, and the type of the first frame is not particularly limited. The first frame may be any frame member that constitutes the vehicle body frame. The body frame refers to a frame constituting a body frame of the baby carriage such as a front leg, a rear leg, a front / rear direction member, a bracket, and a width direction member. As one embodiment of the present invention, the first frame is in a positional relationship that is substantially parallel to the push rod that is in the back pushing position. According to this embodiment, it is possible to hold the push rod in the back pushing position so as not to rotate.

The type of the second frame is not particularly limited. The second frame may be any member constituting the body frame. As one embodiment, the second frame is an armrest that is coupled to the first frame via a coupling shaft, and the angle between the armrest and the first frame is set to the first angle in the unfolded state, and is in the middle of folding and in the folded state The angle may be different from the first angle. As another embodiment, the second frame is a rear leg having a wheel at the lower end and extending in the vertical direction. The rear leg is in a position where it comes into contact with the blocking member in the unfolded state, and is in a position where it is separated from the blocking member in the middle of folding and in the folded state.

  Alternatively, as another embodiment of the present invention, the second frame is a rotating bracket connected to the first frame via a connecting shaft, and the angle between the rotating bracket and the first frame is the first angle in the unfolded state. The angle is different from the first angle in the middle of folding and in the folded state. As another embodiment, the second frame is a front-rear direction member that is connected to the first frame via a connecting shaft, and the angle between the front-rear direction member and the first frame is set to the first angle in the unfolded state, and is folded. The angle is different from the first angle in the midway state and the folded state.

As a preferred embodiment of the present invention, the position adjusting means includes an elastic member that biases the blocking member to the first position, and abuts against the blocking member in the deployed state to push the blocking member into the second position. And an abutting portion spaced apart from the blocking member. The contact portion may be a separate member from the blocking member, or may be a part of the blocking member provided on the blocking member.

  As a further preferred embodiment of the present invention, the first position is a position adjacent to a predetermined portion of the push bar which is set to the back pushing position. According to this embodiment, the push bar brought to the back pushing position does not rotate from the back pushing position, and the baby carriage can be folded while being kept in the back pushing position. As another embodiment, the first position of the blocking member may be a position adjacent to a predetermined portion of the push rod that is set to the facing pressing position.

  Although the present invention is not limited to one embodiment, either one of the predetermined portion of the push rod and the blocking member is a protrusion, and the other is a pair of side wall portions. It may be received between the pair of side walls. According to this embodiment, the push rod can be held in a non-rotatable state at the first position.

  Thus, according to the present invention, the blocking member does not restrict the rotation of the push bar in the deployed state of the baby carriage. When the folding operation of the baby carriage is started, the blocking member moves to the first position on the movement path of the push rod, and restricts the rotation of the push rod. Therefore, even in the incomplete folding state, even in the incomplete folding state, even if the operator accidentally releases the push rod lock mechanism, the push rod does not rotate and can prevent the push rod from passing through. .

It is a perspective view which shows the foldable baby carriage which becomes one Embodiment of this invention. It is a side view which shows the foldable baby carriage of FIG. 1, Comprising: A push bar is shown in the back pushing position. It is a side view which shows the foldable baby carriage of FIG. 1, Comprising: A push bar is shown in the face-to-face pushing position. It is a side view which shows the folding state of the folding baby carriage of FIG. It is a side view which shows the folding state of the foldable baby carriage of FIG. It is a perspective view which shows the armrest in an unfolded state, an armrest support member, and a push rod. It is a side view which takes out and shows the armrest and armrest support member of FIG. It is sectional drawing which shows the armrest support member of FIG. 6, a push rod, and the push-through prevention structure. It is a view of the blocking member and the position adjustment means in the unfolded state in the width direction outside. It is the figure which looked at the interruption | blocking member and position adjustment means corresponding to FIG. 9 from the width direction inner side. It is the front view and side view of a blocking member. It is a diagram of the blocking member and the position adjustment means in folded state midway and folded state viewed from the width direction outside. The blocking member and the position adjustment means corresponding to FIG. 12 is a view from the inner side in the width direction. It is a perspective view which expands and shows the armrest, armrest support member, and push rod in the middle of folding. It is a diagram which shows the foldable baby carriage which becomes other embodiment of this invention, Comprising: A push rod represents a mode that it was made into the back pushing position. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the foldable baby carriage of FIG. 15, Comprising: A push rod is represented as a face-to-face pushing position. FIG. 18 is an enlarged diagram showing the blocking member and the position adjusting means in FIG. 17. It is a diagram which shows the folding state of the folding baby carriage of FIG. It is a diagram which shows the folding state of the foldable baby carriage of FIG. FIG. 20 is an enlarged diagram showing the blocking member and the position adjusting means of FIGS. 18 and 19. It is a diagram which shows the modification of the structure which prevents passage of a push rod, Comprising: A push rod represents a mode that it was made the facing pressing position. It is a diagram which shows a mode that the push rod was made into the back pushing position in the structure of FIG. It is a diagram which shows a mode that the interruption | blocking member was made into the 1st position in the structure of FIG. It is a diagram which shows the foldable baby carriage which becomes further another embodiment of this invention, Comprising: A push rod represents a mode that it was made into the back pushing position. FIG. 26 is an enlarged diagram showing the blocking member and the position adjusting means in FIG. 25. It is a diagram which shows the foldable baby carriage of FIG. 25, Comprising: A push rod is represented as a face-to-face pushing position. It is the diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. FIG. 26 is a diagram showing a state during folding of the folding baby carriage of FIG. 25. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the folding state of the foldable baby carriage of FIG. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the foldable baby carriage which becomes another embodiment of this invention, Comprising: A push bar represents a mode that it was made into the back pushing position. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the foldable baby carriage of FIG. 33, Comprising: A push bar is shown in the state which was made into the facing pressing position. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the folding state of the folding baby carriage of FIG. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the folding state of the foldable baby carriage of FIG. It is a diagram which expands and shows the interruption | blocking member and position adjustment means of FIG. It is a diagram which shows the movement of the interruption | blocking member of this invention, and the movement path | route of a push rod. It is a diagram which shows the movement of the interruption | blocking member used as the modification of this invention, and the movement path | route of a push rod.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a foldable baby carriage according to an embodiment of the present invention, and shows a state in which a push bar is set to a back pushing position. FIG. 2 is a side view of the folding baby carriage shown in FIG. 1 as viewed from the left side in the width direction. FIG. 3 is a side view of the foldable baby carriage according to the embodiment as viewed from the left side in the width direction, and shows a state where the push bar is brought into a face-to-face push position. 1 to 3 are all unfolded for use. On the other hand, FIG. 4 is a side view of the folding state of the folding baby carriage as viewed from the left side in the width direction. FIG. 5 is a side view of a fully folded state of the folding baby carriage (hereinafter referred to as a folded state) as seen from the left side in the width direction. As shown in FIG. 5 when the folding baby carriage of this embodiment is not used. Reduced to Therefore, the foldable baby carriage of the present embodiment is set to either the unfolded state shown in FIGS. 1 to 3 or the folded state shown in FIG.

  First, the overall configuration of the folding baby carriage will be described.

  The folding baby carriage has a pair of left and right front legs 14 having a front wheel 12 at the lower end and extending in the vertical direction, a pair of left and right rear legs 15 having a rear wheel 13 at the lower end and extending in the vertical direction, the front leg 14 and the rear leg. A pair of left and right front and rear members 18 extending in the front and rear direction extending over 15, a pair of left and right armrests 20 extending in the front and rear direction above the front and rear direction member 18, and a rear end of the armrest 20 to support the rear end A pair of left and right armrest support frames 22 extending in parallel, a plurality of width-direction members laid between the pair of left and right symmetrical frames, and a plurality of brackets 26 articulating one frame and the other frame so as to be relatively movable. , 28.

  The upper end of the front leg 14, the upper end of the rear leg 15, and the front end of the armrest 20 are connected to each other by a common connecting shaft 25 so as to be rotatable. A rear end of the armrest 20 is rotatably connected to an upper end of the armrest support frame 22 via a connecting shaft 23. The armrest support frame 22 is a pipe having an upper end and a lower end and extending linearly. The lower end of the armrest support frame 22 is rotatably connected to the reversing bracket 28 via a connecting shaft 29. The reversing bracket 28 is connected to the central portion of the rear leg 15 via the connecting shaft 30. A U-shaped backrest member 24 is installed between the pair of left and right reversing brackets 28.

  Further, the rear end of the front / rear direction member 18 which is a pair of left and right frames extending in the front / rear direction is rotatably connected to the reversing bracket 28. The front end region of the front-rear direction member 18 is inserted into the cylindrical portion 26t of the rotation bracket 26, whereby the front-rear direction member 18 is slidably connected to the rotation bracket 26. The rotating bracket 26 is rotatably connected to the center portion of the front leg 14 via a connecting shaft 27.

  The front-rear direction member 18 is a frame that supports a seat portion of an infant seat (not shown). The armrest also constitutes a handrail for the infant seat. The backrest member 24 is attached to the reversing bracket 28 so as to be tiltable, and supports a backrest portion of an infant seat (not shown).

  The front leg 14, the rear leg 15, the front-rear direction member 18, the armrest 20, the armrest support frame 22, the brackets 26 and 28, and the width direction member described above constitute a body frame of the folding baby carriage. Each frame constituting the body frame is rotated about the connecting shafts 23, 25, 27, 29, and 30 so that the body frame is unfolded for use (FIG. 2) and not used. It is transformed into a folded state (FIG. 5) reduced to. 4 shows one state in the middle of the unfolded state shown in FIG. 2 and the folded state shown in FIG. In the unfolded state, the reversing bracket 28 is in a posture in which the connecting shaft 29 is on the upper side and the connecting shaft 30 is on the lower side, as shown in FIG. 3, and after being folded in the state shown in FIG. As shown, the connecting shaft 29 is turned down and the connecting shaft 30 is turned up. Thereby, the body frame is greatly reduced in the front-rear direction. Note that the folding state in the present embodiment refers to a wide range of modes from the unfolding state shown in FIG. 2 until the folding operation starts immediately before reaching the complete folding state shown in FIG.

  A plate 22 p that extends further downward is attached and fixed to the lower end of the armrest support frame 22. A pivot 33 is provided at the lower end of the plate 22p, and the plate 22p is connected to the lower end of the push rod 34 via the pivot 33. The push rod 34 is a pipe that extends in a straight line, and can be rotated in the front-rear direction about the pivot 33, and in the unfolded state, the rear back pushing position (FIG. 2) and the front facing pushing position (FIG. 3). Can be selectively switched. The upper end of the push rod 34 is connected to the handle portion 36 via the connecting shaft 35. The handle portion 36 extends in the left-right direction and is installed on a pair of left and right push rods 34.

  Next, the push rod locking mechanism and the structure for preventing the push rod from passing through will be described.

  FIG. 6 is a perspective view showing the armrest, the armrest support member, and the push rod in the deployed state. FIG. 7 is a side view showing the armrest and the armrest support member extracted from FIG. FIG. 8 is a cross-sectional view showing a cross section of the armrest support member, the push rod, and the push rod passage prevention structure of FIG. 6 cut along a plane perpendicular to the longitudinal direction. An engaged portion 37 f that protrudes outward in the width direction is fixedly attached to the upper end portion of the front leg 14. An engaged portion 37r that protrudes outward in the width direction is attached and fixed to the upper end portion of the rear leg 15. On the other hand, an engaging member 38 is slidably provided on the push bar 34. The engagement member 38 has a rhombus shape in a side view and can slide in the longitudinal direction of the push rod 34. On the inner side in the width direction of the engaging member 38, an engaging groove extending in the longitudinal direction of the push rod 34 and selectively receiving the engaged portions 37r and 37f is formed. The engaged portions 37r and 37f and the engaging member 38 constitute a push rod locking mechanism that holds the push rod 34 in either the facing push position or the back push position.

  When the push bar 34 is brought into the back pushing position as shown by a solid line in FIG. 6, the engaging member 38 is engaged with the engaged portion 37r, and the push bar 34 is held in the back pushing position. When the operator of the folding baby carriage raises the engaging member 38 upward to release the engagement with the engaged portion 37r, the push bar 34 can rotate about the pivot 33. Next, as shown by the broken line in FIG. 6, the operator tilts the push bar 34 to the facing pressing position, so that the diamond-shaped engaging member 38 is automatically engaged with the engaged portion 37f. As a result, the push bar 34 is held at the facing pressing position. On the contrary, even when switching from the facing pressing position to the back pressing position, the operator may pull up the engaging member 38 and tilt the push bar 34 to the back pressing position as described above.

  When viewed from the outside in the width direction, the armrest support frame 22 is hidden by a push bar 34 in the back pushing position as shown in FIG. A stopper 39r is attached and fixed to the armrest support frame 22 that extends in parallel with the push bar 34 in the back pushing position. The stopper 39r is in contact with a protrusion 34p provided on the push rod 34 and projecting inward in the width direction, and restricts the push rod 34 from falling backward beyond the back pushing position. Similarly, the front leg 14 is fixedly attached with a stopper 39f that restricts the push bar 34 from falling forward beyond the facing pressing position.

  If it adds here, as shown in FIG. 8, the nail | claw 39n which protrudes ahead is formed in the front-end | tip part of the stopper 39r. On the other hand, as shown in FIG. 8, a claw 34n protruding rearward is formed at the tip of the projection 34p. While the push bar 34 is in the back pushing position, the claws 34n and 39n face each other through a gap opened in the width direction of the baby carriage. Thereby, even if an excessive lateral force acts on the push rod 34 and the push rod 34 tries to move outward in the width direction, the claws 34n and 39n are engaged with each other, and the push rod 34 is moved in the width direction outside. Movement is prevented.

  A cover 42 of position adjusting means for adjusting the position of the blocking member 41 is provided on the outer side in the width direction of the armrest support frame 22. A long hole 42 n extending in the longitudinal direction of the armrest support frame 22 is formed in the cover 42. The blocking member 41 is an elongated member extending in the vertical direction, and is accommodated in the cover 42 so as to be movable. A shutter 41 s is formed at the lower end of the blocking member 41. The shutter 41s passes through the long hole 42n and protrudes outward in the width direction. The shutter 41s can move to the upper end side (first position) of the long hole 42n and the lower end side (second position) of the long hole 42n. 6 and 7 show the shutter 41s of the blocking member 41 in the second position.

  As shown in FIG. 7, as the push rod 34 rotates, the protrusion 34 p of the push rod 34 moves along an arcuate movement path B centered on the pivot 33. The blocking member 41 opens and closes the movement path B like a shutter to allow or restrict the passage of the protrusion 34p.

Figure 9 is a view of the blocking member and the position adjustment means in the unfolded state in the width direction outside. Figure 10 is a view of the blocking member and the position adjustment means corresponding to FIG. 9 in the width direction inner side. The left side of FIG. 11 is a front view of the blocking member, and shows a state seen from the front of the folding baby carriage. The right side of FIG. 11 is a side view of the blocking member, and shows a state of the folding baby carriage as viewed from the outside in the width direction. Figure 12 is a view of the blocking member and the position adjustment means in the middle state and the folded state folding the width direction outside. Figure 13 is a view of the blocking member and the position adjustment means corresponding to FIG. 12 from the inner side in the width direction. 9 to 13 show a structure for preventing the push bar 34 from passing through the vehicle body frame.

  The outer surface 42m of the cover 42 is directed outward in the width direction. The engaged portion 37r and the stopper 39r protrude outward in the width direction from the outer side surface 42m. The inner side surface 42i of the cover 42 is attached and fixed to the outer peripheral surface of the armrest support frame 22 that is a pipe.

The blocking member 41 is accommodated in the cover 42 and guided in the extending direction of the center line 22 x of the armrest support frame 22. As shown in FIG. 11, the blocking member 41 is L-shaped and extends in the vertical direction, and the shutter 41s protrudes outward in the width direction. As shown in FIGS. 10 and 13, a V-shaped elastic member 43 that biases the blocking member 41 upward is provided inside the cover 42. One end of the elastic member 43 engages with the inner side surface of the cover 42, and the other end of the elastic member 43 engages with a protruding portion 41 t protruding from the blocking member 41. The upper end 41p of the blocking member 41 is inserted into a notch 42h formed at the upper end of the cover 42 and protrudes upward from the notch 42h. The upper end portion 41p is brought into contact with the lower surface of the A Muresuto 20. For this reason, the blocking member 41 is pushed down against the urging force of the elastic member 43 to be in the second position in the deployed state.

On the other hand, when the body frame of the foldable baby carriage starts to fold and the angle between the armrest 20 and the armrest support frame 22 around the connecting shaft 23 increases, the armrest 20 moves away from the upper end 41p, and the elastic member 43 becomes the blocking member. 41 is displaced upward. As a result, the shutter 41s is set to the first position on the movement path B (FIGS. 1 2 and 1 3 ). The shutter 41 s in the first position is adjacent to the protrusion 34 p of the push rod 34. For this reason, as shown in the perspective view of FIG. 14, even if the push rod 34 tries to rotate in the middle of folding, the projection 34p contacts the shutter 41s, and the push rod 34 is restricted from rotating.

When the vehicle body frame is subsequently folded and the angle between the armrest 20 and the armrest support frame 22 around the connecting shaft 23 is further expanded, the vehicle body frame is completely folded. In the folded state, similarly to the folded state midway, the shutter 41s of the blocking member 41 is in the first position on the movement path B (FIG. 1 2, 1 3). As in the perspective view of FIG. 14, the shutter 41 s comes into contact with the protrusion 34 p of the push bar 34 in the folded state, and the push bar 34 is restricted from rotating. The elastic member 43 and the upper end portion 41p function as position adjusting means for adjusting the position of the blocking member 41.

  In other words, the shutter 41s is positioned in front of the protrusion 34p in both the second position and the first position as shown in FIG. Then, the shutter 41s in the first position faces the front surface of the projection 34p and the forward rotation of the push rod 34 is restricted, and the stopper 39r faces the rear surface of the projection 34p and the push rod 34 Rotation to the rear is restricted. As a result, even if the operator pulls the engaging member 38 of the push rod locking mechanism upward and releases the engagement between the engaging member 38 and the engaged portion 37r, the push rod 34 does not rotate. .

  According to the folding baby carriage of this embodiment, the blocking member 41 is responsive to the relative positional relationship between the armrest 20 that is the second frame and the armrest support frame 22 that is the first frame. That is, the blocking member 41 is movably attached to the armrest support frame 22 and is set to the first position on the movement path B of the protrusion 34p of the push rod 34 in the folded state and the folded state of the folding baby carriage. The blocking member 41 is set at a second position separated from the movement path B in the unfolded state of the folding baby carriage. The position of the blocking member 41 between the first position and the second position is adjusted by an elastic member 43 that is installed in the cover 42 and biases the blocking member 41 to the first position, and the armrest 20 is the upper end of the blocking member 41. This is done by abutting 41p and pushing down the blocking member 41 to the second position.

  As a result, the blocking member 41 is maintained at the second position in the deployed state in which the upper end portion 41p contacts the armrest 20. The elastic member 43 maintains the blocking member 41 of the baby carriage in the first position in the folding state and the folded state in which the upper end portion 41 p is separated from the armrest 20.

  Therefore, according to the present embodiment, the push bar 34 is not only in the folded state but also in the middle of the folding, even if the operator releases the engagement between the engaging member 38 and the engaged portion 37r. The rotation is restricted by this, and switching is impossible. Therefore, the push rod 34 is prevented from passing through the vehicle body frame such as the armrest support frame 22 and the front leg 14 so as to rotate forward.

  Next, another embodiment of the present invention will be described. FIGS. 15 to 21 are diagrams showing a folding baby carriage according to another embodiment of the present invention. FIG. 15 shows the folding baby carriage in the unfolded state as viewed from the left side, and the push bar is set to the back pushing position. FIG. FIG. 16 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. Regarding the other embodiments, the same components as those described above are denoted by the same reference numerals, description thereof is omitted, and different configurations will be described below. In another embodiment, the rear leg 15 is a second frame whose relative position with the armrest support frame 22 changes. A shutter 41s hatched in the drawing is formed at the upper end of the blocking member 41, and the lower end of the blocking member 41 can protrude downward from the cover 42. An abutting portion 15p that protrudes rearward is fixed to the rear leg 15.

  In the unfolded state, the lower end of the blocking member 41 comes into contact with the contact portion 15p and is pushed upward, and the shutter 41s is moved to the second position spaced upward from the movement path of the protrusion 34p.

FIG. 17 is a diagram showing the foldable baby carriage of FIG. 15 and shows a state in which the push rod is brought into the face-to-face push position. 18 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. Since the shutter 41s is being maintained at the second position in the deployed state, the protruding portion 34p does not interfere with the shutter 41s, the push rod 34 can be switched from the rear push position to the facing press position, or vice versa.

  FIG. 19 is a diagram showing the folding state of the folding baby carriage of FIG. 20 is a diagram showing a folded state of the folding baby carriage of FIG. FIG. 21 is an enlarged view of the blocking member and the position adjusting means of FIGS. 18 and 19.

  When the operator starts folding the folding baby carriage with the push bar 34 in the rear pushing position, and the folding baby carriage is in the middle of folding shown in FIG. 19, the armrest support frame which is the first frame The relative positional relationship between 22 and the rear leg 15 as the second frame changes. Then, the blocking member 41 is separated from the contact portion 15p of the rear leg 15. As a result, the blocking member 41 returns downward, and the shutter 41s is brought to the first position. When the push bar 34 tries to rotate, the protrusion 34p of the push bar comes into contact with the shutter 41s placed at the first position, so that the rotation of the push bar 34 is restricted.

  Even if the operator continues to fold the folding baby carriage and the folding baby carriage is in the final folded state shown in FIG. 20, the blocking member 41 remains separated from the rear leg 15. Therefore, the shutter 41s is maintained in the first position in the middle of folding and in the folded state, and the switching of the push rod 34 is prevented.

  Next, a modified example of the structure for preventing the push rod from passing through will be described. FIG. 22 is a diagram of a modified example viewed from the left side, and shows a state in which the push rod is brought into the facing pressing position. FIG. 23 is a diagram showing a state in which the push rod is set to the back pushing position in the structure of FIG. In this modification, the hatched projection 34p has a pair of side walls 34w, 34w and a bottom wall 34b. The side wall portions 34w, 34w face each other and extend in the longitudinal direction of the push bar 34. The bottom wall portion 34b is connected to the pair of side wall portions 34w and 34w on the lower end side.

Figure 22 and variations also in the same manner as FIGS. 16 and 18 described above in FIG. 23, pushed upward under end of the blocking member 41 in the stroller a developed state is in contact rear legs and those, shutter 41s the second upper Maintained in position. As a result, the push bar 34 can be switched between the facing pressing position shown in FIG. 22 and the back pressing position shown in FIG.

  FIG. 24 is a diagram showing a state in which the blocking member is in the first position in the structure of FIG. As shown in FIGS. 19 and 20, when the folding baby carriage starts to be folded, the relative positional relationship between the armrest support frame 22 and the rear leg 15 is changed, and the rear leg 15 is separated from the blocking member 41. Then, the shutter 41s is set to the first position below, and the shutter 41s is received between the pair of side wall portions 34w and 34w. As a result, the push rod is held in a non-rotatable state in the middle of folding and in the folded state.

  Next, still another embodiment of the present invention will be described based on the diagrams of FIGS. FIG. 25 is a diagram showing a foldable baby carriage according to still another embodiment of the present invention, and shows a state in which the push rod is set to the back pushing position. FIG. 26 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. FIG. 27 is a diagram showing the foldable baby carriage of FIG. 25 and shows a state in which the push bar is brought into the face-to-face push position. FIG. 28 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. FIG. 29 is a diagram showing the folding state of the folding baby carriage of FIG. FIG. 30 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. FIG. 31 is a diagram showing a folded state of the folding baby carriage of FIG. FIG. 32 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. Furthermore, about another embodiment, the same code | symbol is attached | subjected about the structure which is common in embodiment mentioned above, description is abbreviate | omitted, and a different structure is demonstrated below.

In yet another embodiment of the present invention, the first frame is the armrest support frame 22 and the second frame is the reversing bracket 28. The reversing bracket 28 and the armrest support frame 22 are rotatably connected via a connecting shaft 29, and the angle between the reversing bracket 28 and the armrest support frame 22 is changed by a folding operation. Further, connecting shaft 29 of the reversing bracket 28 and the armrest support frame 22 includes a pivot 3 3 the rod 34 pushes the arm rest supporting frame 22, are arranged coaxially.

25 to 28, the angle between the armrest support frame 22 and the reversing bracket 28 is set to the first angle. Further, the upper end 28t of the reversing bracket 28 positioned above the connecting shaft 29 contacts the lower end of the blocking member 41, whereby the blocking member 41 is set to the upper first position. In this unfolded state, the protrusion 34p attached and fixed to the push bar 34 does not engage with the shutter 41s of the blocking member 41.

29 and 30, the reversing bracket 28 rotates around the connecting shaft 29 and the upper end 28t moves rearward. Then, the upper end 28 t is separated from the blocking member 41, and the blocking member 41 is moved to the lower second position by the elastic member 43. The shutter 41s of the blocking member 41 is engaged with the protrusion 34p of the push bar 34 in the second position at the back pushing position. As a result, the push bar 34 cannot be switched.

The folding state shown in FIGS. 31 and 32 is the same as the folding state. That is, the reversing bracket 28 continues to rotate, and the upper end 28 t is moved below the connecting shaft 29 to move away from the blocking member 41.

  Next, another embodiment of the present invention will be described based on the diagrams of FIGS. FIG. 33 is a diagram showing a foldable baby carriage according to another embodiment of the present invention, and shows a state in which the push rod is set to the back pushing position. 34 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. FIG. 35 is a diagram showing the foldable baby carriage of FIG. 33 and shows a state where the push rod is brought into the face-to-face push position. FIG. 36 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. FIG. 37 is a diagram showing the folding state of the folding baby carriage of FIG. FIG. 38 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. FIG. 39 is a diagram showing a folded state of the folding baby carriage of FIG. 40 is an enlarged diagram showing the blocking member and the position adjusting means of FIG. In another embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and different configurations are described below.

In another embodiment of the present invention, the first frame is the armrest support frame 22 and the second frame is the front-rear direction member 18. The reversing bracket 28 and the armrest support frame 22 are connected to each other via a connecting shaft 29 so as to be rotatable. Further, the rear end portion of the front-rear direction member 18 is rotatably connected via the connecting shaft 29. Thereby, the angle between the front-rear direction member 18 and the armrest support frame 22 is changed by the folding operation. The connecting shaft 29 includes a pivot 3 3 the rod 34 pushes the arm rest supporting frame 22, are arranged coaxially.

  33 to 36, the angle between the armrest support frame 22 and the front-rear direction member 18 is set to the first angle. Further, the rear end 18t of the front-rear direction member 18 located behind the connecting shaft 29 protrudes obliquely upward and comes into contact with the lower end of the blocking member 41, whereby the blocking member 41 is set to the upper first position. . In this unfolded state, the protrusion 34p attached and fixed to the push bar 34 does not engage with the shutter 41s of the blocking member 41.

  37 and 38, the front-rear direction member 18 rotates around the connecting shaft 29 and the rear end 18t moves downward. Then, the rear end 18t is separated from the blocking member 41, and the blocking member 41 is moved to the lower second position by the elastic member 43. The shutter 41s of the blocking member 41 is engaged with the protrusion 34p of the push bar 34 in the second position at the back pushing position. As a result, the push bar 34 cannot be switched.

  The folded state shown in FIGS. 39 and 40 is the same as the folded state. That is, the longitudinal member 18 continues to rotate, and the rear end 18 t moves away from the blocking member 41.

  FIG. 41 is a diagram showing the movement of the blocking member and the movement path of the push rod of the present invention, schematically showing a state where the left side is seen in the width direction of the baby carriage and a state where the right side is seen in the front-rear direction of the baby carriage. Represent. As described so far, the protrusion 34p, which is a predetermined portion of the push rod 34, draws a circumferential trajectory centered on the pivot 33 when the push rod 34 is switched, as shown on the left side of FIG. The blocking member 41 moves in the vertical direction between a first position (solid line) in the push rod movement path B of the circumferential track and a second position (two-dot chain line) outside the movement path B. And the interruption | blocking member 41 engages with the projection part 34p used as the predetermined part of a push rod in a 1st position. The second position of the blocking member 41 may be above the first position as shown by a two-dot chain line in FIG. 41, or may be below the first position not shown.

  FIG. 42 is a diagram showing the movement of the blocking member and the movement path of the push rod according to a modification of the present invention, with the left side schematically showing the state viewed in the width direction of the baby carriage and the right side in the front-rear direction of the baby carriage. The observed state is schematically represented. In addition to the embodiment described above, the push rod 34 draws a fan-shaped movement path B having the pivot 33 as a vertex when the push rod 34 is switched, as shown on the left side of FIG. As shown on the right side of FIG. 42, the blocking member 41 moves in the width direction between the first position (two-dot chain line) in the push rod moving path B and the second position (solid line) outside the moving path B. To do. Thus, the blocking member 41 may move in the width direction of the baby carriage as shown on the right side of FIG. Since the movement route B shown in FIG. 42 is wider than the movement route B shown in FIG. 41, the degree of freedom of the layout of the blocking members 41 increases.

  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 child-care equipment.

12 front wheels, 13 rear wheels, 14 front legs, 15 rear legs, 18 longitudinal members, 20 armrests, 22 armrest support frames, 22x armrest support frame center lines, 23 connecting shafts, 24 backrest members, 26 rotating brackets, 28 reversing brackets , 33 Axis, 34 Push rod, 34p Protruding part, 34w, 34w Side wall part, 34b Bottom wall part, 37f, 37r Engaged part, 38 Engaging member, 39f, 39r Stopper, 41 Shut-off member, 41s Shutter, 42 Cover 43 Elastic member.

Claims (9)

A first frame;
A second frame in which a relative positional relationship with the first frame is changed in each of the unfolded state, the folding state, and the folded state of the baby carriage;
A push bar that can be selectively switched between a back-side push position and a face-to-face push position in the unfolded state;
A first position on a moving path where the predetermined portion of the push rod moves between the back pressing position and the facing pressing position, and a second position spaced apart from the moving path. A blocking member movable between and
The blocking member is maintained in the second position in response to the relative positional relationship in the unfolded state, and the blocking member is maintained in the first position in response to the relative positional relationship in the folding state and in the folded state. A position adjusting means,
The push bar is allowed to be switched by the blocking member in the second position in the unfolded state, and cannot be switched by the blocking member in the first position in the folding state and the folded state. A foldable baby carriage characterized by that.   2. The foldable baby carriage according to claim 1, wherein the first frame is in a positional relationship substantially parallel to the push bar at the back pushing position.   The second frame is an armrest connected to the first frame via a connecting shaft, and an angle between the armrest and the first frame is set to a first angle in the unfolded state, and the folding intermediate state and the The folding baby carriage according to claim 2, wherein the folding baby carriage is set to an angle different from the first angle in a folded state. Said second frame is a leg after extending vertically has a wheel at the lower end, the rear legs are in a position in which it contacts the said blocking member in the expanded state, the blocking by the folded middle state and the folded state The foldable baby carriage according to claim 2, wherein the foldable baby carriage is positioned away from the member . The second frame is a rotating bracket connected to the first frame via a connecting shaft, and an angle between the rotating bracket and the first frame is set to a first angle in the unfolded state, and the folding is performed. An angle different from the first angle in the intermediate state and the folded state,
The foldable baby carriage according to claim 2.   The second frame is a front-rear direction member connected to the first frame via a connecting shaft, and an angle between the front-rear direction member and the first frame is set to a first angle in the unfolded state, and the folding is performed. The foldable baby carriage according to claim 2, wherein the foldable baby carriage is set to an angle different from the first angle in the intermediate state and the folded state. The position adjusting means includes an elastic member that biases the blocking member to the first position;
The contact portion that contacts the blocking member in the unfolded state and pushes the blocking member into the second position and is separated from the blocking member in the folded state and in the folded state. The foldable baby carriage according to any one of the above.   The foldable baby carriage according to any one of claims 1 to 7, wherein the first position is a position adjacent to a predetermined portion of the push bar that is set to the back push position.   One of the predetermined portion and the blocking member is a protrusion, and the other is a pair of side walls, and the protrusion is received between the pair of side walls at the first position. The foldable baby carriage according to any one of the above.

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