JP5953139B2 - Folding baby carriage - Google Patents

Description

  The present invention relates to a folding baby carriage that is in an unfolded state when in use and in a folded state when not in use.

  The push bar is slidably mounted along the front leg, and the upper end area of the push bar extends to a position extending upward from the front leg in the unfolded state, and the upper end area of the push bar slides downward in the folded state to the front leg. Foldable baby carriages that are in overlapping positions are popular. As such a baby carriage, for example, one described in Japanese Patent Application Laid-Open No. 2009-120182 (Patent Document 1) is known.

  Further, for example, Japanese Patent No. 4786161 (Patent Document 2) has a body frame different from the push rod slide baby carriage described in Patent Document 1 and can adjust the length of the handle portion extending upward from the body frame. ) And Japanese Patent No. 4095377 (Patent Document 3).

JP 2009-120182 A Japanese Patent No. 4786161 Japanese Patent No. 4095377

  In recent years, there has been a demand for a folding baby carriage that can be further reduced when not in use. In other words, it is desired that the baby carriage is folded compactly when not in use and takes up as little space as possible in private cars and public transportation. In particular, when going out to the neighborhood as well as carrying a lot of luggage, a baby carriage that can be stored in a luggage rack with a lid of a passenger aircraft and that can be further reduced when not in use is useful.

  In view of the above circumstances, an object of the present invention is to provide a baby carriage that can be further reduced in a folded state as compared with the conventional one.

For this purpose, the baby carriage according to the present invention includes a pair of seat frame members, a pair of push rods extending upward from the seat frame members, a pair of front legs extending downward from the seat frame members, and an upper end region seated via a pivot. beyond seat frame member connected to the frame member and a pair of rear legs lower end Ru extending from the seat frame member downwardly extends forwardly. The push rod moves to the seat frame member side in the folded state, and the front leg is configured to move to the seat frame member side in the folded state.

  According to the present invention, of the push rod constituting the upper part of the baby carriage, the seat part constituting the central part of the baby carriage, and the front leg constituting the lower part of the baby carriage, the upper part of the baby carriage and the lower part of the baby carriage are the center of the baby carriage. Since it moves to the part side, the baby carriage can be further reduced in the folded state as compared with the prior art. The connecting structure of the front leg, the seat frame member, and the push rod may be a structure using a nesting type or a structure using dovetails. Preferably, the push rod, the seat frame member, and the front leg have substantially the same length, and the three members are reduced so as to overlap each other in the folded state. Thereby, the vertical dimension of the baby carriage can be reduced to approximately 1/3. For example, the rear leg may be connected to the front leg and pulled into the seat frame member together with the front leg when folded. Alternatively, the rear leg may be connected to the seat frame member and pivoted along the seat frame member when folded.

  As one embodiment of the present invention, the push rod, the seat frame member, and the front leg extend in parallel with each other, and the push rod and the front leg are slid to overlap with the seat frame member in the folded state, from the upper end of the push rod. The vertical dimension to the lower end of the front leg is reduced. According to this embodiment, by adopting the slide structure, it is possible to reduce the push rod, the seat frame member, and the front leg so as to overlap each other until they substantially coincide with each other in the folded state. As another embodiment, at least one of the push bar, the seat frame member, and the front leg may extend in different directions with respect to the remaining members, and the push bar and the front leg may slide while being non-parallel. You may move to the seat frame member.

  As a preferred embodiment of the present invention, it further comprises a deployed state locking mechanism that regulates relative movement of the push rod, the seat frame member, and the front leg in the deployed state of the baby carriage, and the deployed state lock mechanism is provided on the seat frame member, It has a locking member that engages with the push bar and the front leg in the first position and is disengaged from the push bar and the front leg in the second position. According to this embodiment, the unfolded state of the baby carriage can be maintained.

  As a further preferred embodiment of the present invention, the locking member engages with the push bar in the third position and is disengaged from the front leg. According to this embodiment, it is possible to move the front leg to the seat frame member side while moving only the push rod upward from the seat frame member side. As an effect of such a state, the operator of the baby carriage can carry the baby carriage by grasping and pulling the push rod. The unfolded state locking mechanism may be provided on any one of the seat frame members, or may be provided on each seat frame member.

  The deployed state locking mechanism of the present invention can be realized in various forms. Then, the operator of the baby carriage may directly operate the lock member by hand, or may remotely operate the lock member with another operation mechanism. Although the present invention is not limited to one embodiment, the operating means provided on the upper end side of the push rod, the operating means provided on the lower end side of the push rod to operate the lock member, the operating means and the operation A connection mechanism for connecting the means, and an operation mechanism for moving the lock member to any position in accordance with an operation input to the operation means. According to such an embodiment, when two pairs of deployment state lock mechanisms are provided, it becomes possible to operate two deployment state lock mechanisms simultaneously with one operation mechanism, and operability is improved.

  The baby carriage wheels may typically be attached to the pair of front legs and the pair of rear legs inseparably. Alternatively, as another embodiment, the baby carriage of the present invention may further include wheels that are detachably attached to the lower ends of the front legs and the rear legs. According to this embodiment, the baby carriage can be further reduced by separating the wheel from the baby carriage in the folded state. Therefore, the place where the baby carriage is placed can be further reduced, and the baby carriage can be stored in a luggage rack with a lid of the passenger aircraft.

  The infant seat provided between the pair of seat frame members may further include a headrest portion that supports the rear head of the infant, in addition to a seat portion and a backrest portion. And it is good to raise and use a headrest part in the expansion | deployment state of a baby carriage, and to fold and fold a headrest part in a folding state. As one embodiment, the rear leg is pivotably connected to the seat frame member, the backrest portion extending in the vertical direction behind the pair of seat frame members, and the headrest portion pivotally connected to the upper end of the backrest portion, You may further provide the link member which connects a headrest part and a rear leg. According to this embodiment, during the folding operation, the link member can pull the headrest portion downward as the rear leg rotates, and the headrest portion can be automatically folded back. Therefore, the operation performance of the baby carriage is improved.

  The baby carriage according to the present invention includes a plurality of frame members. As one embodiment, the baby carriage of the present invention has a pair of front and rear frame members that extend in the front-rear direction, the front end is rotatably connected to the lower end portion of the front leg, and the rear end is rotatably connected to the lower end portion of the rear leg. Is further provided. According to this embodiment, the space | interval of a front leg and a rear leg is hold | maintained reliably in the expansion | deployment state, and the rigidity of a baby carriage can be improved with a simple structure.

  As described above, the present invention can remarkably reduce the vertical dimension of the baby carriage in the folded state as compared with the conventional case. Therefore, it is possible to save as much space as possible in a private car or public transportation, and to carry a lot of luggage for the user's flight.

1 is a side view schematically showing a folding baby carriage according to an embodiment of the present invention. FIG. 2 is a schematic rear view corresponding to FIG. 1. It is a side view which shows typically the folding middle state of the embodiment. FIG. 4 is a schematic rear view corresponding to FIG. 3. It is a side view which shows typically a mode that the embodiment was made into the conveyance state. FIG. 6 is a schematic rear view corresponding to FIG. 5. It is a side view which shows typically a mode that the embodiment was fully folded. FIG. 8 is a schematic rear view corresponding to FIG. 7. It is a side view which shows the foldable baby carriage which becomes other embodiment of this invention. It is a side view which takes out and shows the seat frame member etc. corresponding to FIG. FIG. 10 is a rear view showing a seat frame member and the like corresponding to FIG. 9. It is a longitudinal cross-sectional view which expands and shows the seat frame member etc. corresponding to FIG. It is a longitudinal cross-sectional view which expands and shows the seat frame member etc. corresponding to FIG. FIG. 14 is a cross-sectional view of the operation mechanism and the lock member corresponding to FIGS. 12 and 13. It is sectional drawing which takes out and shows a locking member. It is a side view which shows a mode that other embodiment was made into the conveyance state. It is a longitudinal cross-sectional view which expands and shows a seat frame member etc. It is a cross-sectional view of the operation mechanism and the lock member corresponding to FIG. It is a side view which shows a mode that other embodiment was made into the folding state. It is a longitudinal cross-sectional view which expands and shows a seat frame member etc. It is a cross-sectional view of the operation mechanism and the lock member corresponding to FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view schematically showing a foldable baby carriage according to an embodiment of the present invention. FIG. 2 is a front view corresponding to FIG. 1, and FIG. 1 and FIG. Represents. FIG. 3 is a side view schematically showing a state during folding according to the embodiment. FIG. 4 is a front view corresponding to FIG. FIG. 5 is a side view schematically showing how the embodiment is brought into a transport state. FIG. 6 is a front view corresponding to FIG. FIG. 7 is a side view schematically showing a state in which the embodiment is completely folded. FIG. 8 is a front view corresponding to FIG. 7 and 8 show the folded state of the baby carriage. 1, FIG. 3, FIG. 5 and FIG. 7 show the state seen in the width direction of the baby carriage. 2, FIG. 4, FIG. 6, and FIG. 8 show the state of the baby carriage as viewed in the front-rear direction.

  The baby carriage is a push-bar slide type baby carriage that is folded with the dimensions in the vertical direction and the front-rear direction being reduced, as is apparent from the comparison between FIGS. 1 and 5 or the comparison between FIGS. 1 and 7. The baby carriage includes a pair of front legs 11, a pair of seat frame members 12, a pair of rear legs 14, a pair of push rods 15, a handle member 16, a pair of front and rear direction frame members 17, and a width direction frame member 18. , 19 and 25 are included.

  Each front leg 11 is a linear pipe member extending in the vertical direction, and a connecting member 13 is rotatably connected to a lower end portion thereof via a pivot 23. A front wheel 11w is detachably attached to the connecting member 13. The upper end portion of each front leg 11 is connected to each seat frame member 12 so as to be slidable. The seat frame member 12 extends linearly in the vertical direction, supports the backrest portion 33 of the infant seat 31, and protects the side of the infant seated on the infant seat 31. The seat frame member 12 receives the front leg 11 from the lower end 12a and the push bar 15 from the upper end 12b. Each push bar 15 is a linear pipe member extending in the vertical direction, and its lower end portion is slidably connected to the seat frame member 12 and its upper end portion is connected to the handle member 16. The handle member 16 extends in the width direction, and connects the upper ends of a pair of push rods 15 arranged on one side and the other side in the width direction.

  Each rear leg 14 is an arc-curved pipe member extending in the up-down direction, and a lower end portion of the rear leg 14 is rotatably connected to the connecting member 21 via a pivot 24. A rear wheel 14 w is detachably attached to the connecting member 21. The upper end region of each rear leg 14 also extends in the front-rear direction, and is connected to the lower end portion 12 a of the seat frame member 12 via a pivot 22 so as to be rotatable. As shown in FIG. 1, the upper end portion of the rear leg 14 extends forward beyond the seat frame member 12. The upper end region of each rear leg 14 extending forward and rearward from the pivot 22 supports a seat portion (not shown) of the infant seat 31.

  Each front-rear frame member 17 is a straight pipe member extending in the front-rear direction, and has a front end fixed to the connecting member 13 at the lower end of the front leg 11 and a rear end fixed to the connecting member 21 at the lower end of the rear leg 14. The

  The width direction frame member 18 is a linear pipe member extending in the width direction, and connects the central portions of the pair of rear legs 14. The width direction frame member 19 is also a straight pipe member extending in the width direction, and connects the pair of connection members 13 at substantially the same position as the pivot 23. The width direction frame member 25 is also a straight pipe member extending in the width direction, and connects the pair of connecting members 21 at substantially the same position as the pivot 24.

  As shown in FIG. 2, the stroller is provided with an unfolded state locking mechanism 41. The deployed state lock mechanism 41 includes a lock member 42 provided on the seat frame member 12, an engaged portion 43 formed on the upper end portion of the front leg 11, and an engaged portion formed on the lower end portion of the push rod 15. 44. The lock member 42 is attached so as to be displaceable in the direction perpendicular to the longitudinal direction of the seat frame member 12, and is in a first position shown in FIG. 2, a third position shown in FIG. 4, and a second position shown in FIGS. Sequential displacement is possible.

  In the deployed state of the baby carriage, the upper end portion of the front leg 11 is accommodated in the seat frame member 12, and the front leg 11 extends below the lower end portion 12 a of the seat frame member 12. In the unfolded state and the transport state described later, the lower end portion of the push rod 15 is accommodated in the seat frame member 12, and the push rod 15 extends upward from the upper end portion 12 b of the seat frame member 12. Accordingly, in the deployed state, the front leg 11 is drawn out to the maximum from the seat frame member 12 and the push bar 15 is drawn out to the maximum from the seat frame member 12.

  The lock member 42 faces the engaged portion 43 at the position where the front leg 11 is extended to the maximum downward. The lock member 42 faces the engaged portion 44 at a position where the push rod 15 is extended to the maximum. When the lock member 42 is set to the first position shown in FIG. 2 in such a state, the lock member 42 is engaged with both the engaged portion 43 and the engaged portion 44. Thereby, the front leg 11 is prohibited from sliding in the longitudinal direction with respect to the seat frame member 12. The same applies to the push rod 15. As a result, the baby carriage can maintain the unfolded state shown in FIGS. The second position and the third position will be described later.

  An infant seat 31 is disposed between the pair of seat frame members 12. The infant seat 31 includes a headrest portion 32, a backrest portion 33, and a seat portion (not shown). Each seat frame member 12 extends upward from both side edges of the seat portion, and constitutes a side portion for the infant seat 31 so as to receive an infant between the pair of seat frame members 12. Thus, for example, each seat frame member 12 is provided with a pair of side walls for an infant seat 31. Alternatively, each side guard member may be provided on each seat frame member 12. The side guard member may be a fabric stretched around the side edge of the seat frame member 12 and the backrest 33, or may be a cushion, for example.

  The seat portion (not shown) is a fabric stretched over the upper end regions of the pair of rear legs 14, and constitutes a substantially upward seating surface to support the baby's buttocks and thighs. The seat portion extends rearward to the width direction frame member 18. The backrest portion 33 is a flush frame body or a substantially flat plate member extending upward from the width direction frame member 18 and supports the back of the infant. A reclining belt 36 is stretched between the pair of seat frame members 12. Thus, the pair of seat frame members 12 supports the backrest portion 33 of the infant seat 31 via the reclining belt 36. The backrest 33 is rotated around the width direction frame member 18 by adjusting the length of the reclining belt 36, and the reclining angle is adjusted.

  The headrest portion 32 is a flush frame body or a substantially flat plate member that extends further upward from the upper end of the backrest portion 33, and supports the head of the infant. The pair of seat frame members 12 protect the left and right sides of the infant's body.

  As shown in FIG. 1, a hood 37 is installed on the pair of upper end portions 12 b of the seat frame member 12. The hood 37 is composed of, for example, an inverted U-shaped hood bone and a hood cloth spanned between the hood bones. The plurality of hood bones are connected to each other by pivots 26 at their lower ends. The pivot 26 is attached to the upper end 12b. By rotating the hood bone around the pivot 26 to open and close, the hood 37 can be adjusted in the longitudinal direction. Alternatively, the hood 37 may be detachably mounted on the pair of upper end portions 12b. Alternatively, the hood 37 may be detachably mounted on the pair of push rods 15. The hood 37 covers the infant seat 31 from above, and protects the infant seated on the infant seat 31 from sunlight and rain.

  Next, the folding operation of the baby carriage will be described.

  In the deployed state of the baby carriage, the front leg 11 extends downward from the seat frame member 12 as shown in FIG. When the baby carriage is folded, each front leg 11 moves toward the seat frame member 12 as shown in FIG. 3, and the lower end of each front leg 11 approaches the lower end 12a of each seat frame member 12 as shown in FIGS. .

  In the unfolded state of the baby carriage, the rear leg 14 is opened at a predetermined angle with respect to the front leg 11 as shown in FIG. When the baby carriage is folded, each rear leg 14 rotates in a direction approaching each seat frame member 12 as shown in FIG. 3, and each rear leg 14 and each front leg 11 substantially overlap as shown in FIGS. The rear wheel 14w is positioned above the front wheel 11w.

  Further, the push bar 15 extends upward from the seat frame member 12 as shown in FIG. When the baby carriage is folded, each push rod 15 moves to the seat frame member 12 side as shown in FIG. 7, and the upper end of each push rod 15 is the upper end portion 12b of each seat frame member 12 as shown in FIGS. Get closer to.

  The folding operation will be described in detail. First, the operator of the baby carriage first displaces the lock member 42 from the first position shown in FIG. 2 to the third position shown in FIG. The locking member 42 does not engage with the engaged portion 43 in the third position, but engages with the engaged member 44. Thereby, the front leg 11 is allowed to slide, and the front leg 11 moves to the seat frame member 12 side. On the other hand, the push rod 15 is prohibited from sliding.

  As the front leg 11 slides and moves so as to overlap the seat frame member 12, as shown in FIG. 3, the rear leg 14 rotates around the pivot 22 and approaches the seat frame member 12, and the front-rear frame member 17 It rotates about the pivot 23 and approaches the front leg 11. Further, the angle between the pivot 24 and the center of the rear leg 14 and the longitudinal frame member 17 is reduced.

  When the front leg 11 is pulled most into the seat frame member 12, the upper end portion of each front leg 11 projects upward from the upper end portion 12b of each seat frame member 12, and the baby carriage is reduced to the transport state shown in FIGS. .

  Compared with the unfolded state, the front and rear dimensions and the vertical dimension of the baby carriage are reduced in the transported state. Thus, the transported state is a state reduced according to the folded state. Further, in the transported state, it is preferable that all the hood bones of the hood 37 are rotated downward from the upper end portion 12 b so that the front-back dimension of the hood 37 is reduced and folded along the seat frame member 12. In the transport state, the headrest portion 32 may be folded back and overlapped with the backrest portion 33 to reduce the vertical dimension of the infant seat 31.

  The operator of the baby carriage can stand the baby carriage on the ground by grounding the front wheel 11w and the connecting member 13 to the ground. As a result, the baby carriage does not take up space during transportation. Further, the operator can carry the baby carriage like a suitcase in a transported state by grasping the handle member 16, tilting the baby carriage to ground only the front wheel 11 w and pulling the handle member 16. Accordingly, the baby carriage can be easily moved while being folded in a transported state.

  When returning from the transported state to the unfolded state, the baby carriage may be unfolded in the reverse order of the above-described operation. Further, when the front frame 11 is prevented from jumping out of the seat frame member 12 by carrying out measures such as bundling the seat frame member 12 and the front-rear direction frame member 17 using a connector (not shown) in the transport state. good.

  Next, the operator of the baby carriage moves the lock member 42 further by one step from the third position shown in FIG. 4 to the second position shown in FIG. 6. The lock member 42 is not engaged with both the engaged portion 43 and the engaged member 44 in the second position. As a result, the push rod 15 is also allowed to slide and is pulled so as to overlap the seat frame member 12.

  In the folded state shown in FIGS. 7 and 8, both the front leg 11 and the push bar 15 move to the seat frame member 12 side. For this reason, compared with the conveyance state shown in FIG. 5 and FIG. 6, the vertical dimension of the stroller is further reduced without changing the longitudinal dimension of the baby carriage. In the transported state and the folded state, the upper end portion of the front leg 11 protrudes above the upper end portion 12b of the seat frame member 12, and the connecting member 13 connected to the lower end portion of the front leg 11 is connected to the lower end portion of the seat frame member 12. Projects downward from 12a. In the folded state, the lower end portion of the push rod 15 projects downward from the lower end portion 12 a of the seat frame member 12, and the handle member 16 connected to the upper end of the push rod 15 is connected to the upper end portion 12 b of the seat frame member 12. Projecting upward. By making the lengths of the front leg 11, the seat frame member 12, and the push rod 15 substantially equal, the vertical dimension of the baby carriage can be reduced to approximately 1/3.

  Further, in the folded state, measures such as bundling the upper end of the front leg 11 and the upper end of the push bar 15 using a coupling tool (not shown) are made so that the push bar 15 does not jump out of the seat frame member 12. May be.

  The front wheel 11w is rotatably attached to the lower end of the bracket 11b. The upper end of the bracket 11b is inserted into a socket (not shown) formed on the connecting member 13, for example, and fixed with a pin (not shown). Similarly, the rear wheel 14w is rotatably attached to the lower end of the bracket 14b. The upper end of the bracket 14b is inserted into a socket (not shown) formed on the connecting member 21, for example, and fixed with a pin (not shown).

  Therefore, these pins may be pulled out in the folded state, and each front wheel 11w indicated by a two-dot chain line in FIG. Similarly, each rear wheel 14w may be removed from each connecting member 21. As a result, the baby carriage can be further reduced and stored in a luggage rack with a lid of a passenger aircraft.

  In addition, when returning from a folding state to a conveyance state, it is good to pay out the push rod 15 in the reverse procedure to the above-described operation. Moreover, it is also possible to change from the unfolded state to the folded state by moving the front leg 11 and the push rod 15 simultaneously from the first position to the second position.

  By the way, according to the present embodiment, the baby carriage is a pair of seat frame members 12, a pair of push rods 15 extending upward from the seat frame members 12, a pair of front legs 11 extending downward from the seat frame members 12, and the seat frame members. 12 and a pair of rear legs 14 connected to 12. The push bar 15 is configured to move to the seat frame member 12 side in the folded state, and the front leg 11 is configured to move to the seat frame member 12 side in the folded state. Thereby, the vertical dimension of the baby carriage can be reduced as compared with the prior art.

  Further, according to the present embodiment, the push rod 15, the seat frame member 12, and the front leg 11 extend in parallel to each other, and the push rod 15 and the front leg 11 slide and move so as to overlap the seat frame member 12 in the folded state. The vertical dimension from the upper end of the push bar 15 to the lower end of the front leg 11 is reduced. Thus, the three frame members (the push rod 15, the seat frame member 12, and the front leg 11) can be combined into one by sliding movement.

  Moreover, according to this embodiment, the deployment state locking mechanism 41 which controls the relative movement of the push bar 15, the seat frame member 12, and the front leg 11 in the deployment state of the baby carriage is further provided. The unfolded state lock mechanism 41 is provided on the seat frame member 12 and engages with the push bar 15 and the front leg 11 at the first position, and disengages with the push bar 15 and the front leg 11 at the second position. A member 42 is provided. Therefore, the baby carriage can be held in the unfolded state shown in FIGS.

  Further, according to the present embodiment, the lock member 42 engages with the push rod 15 at the third position and is disengaged from the front leg 11, so that the baby carriage is brought into the transport state shown in FIGS. 5 and 6. Can do.

  Moreover, according to this embodiment, since it further includes the front wheel 11w and the rear wheel 14w detachably attached to the lower ends of the front leg 11 and the rear leg 14, the front wheel 11w and the rear wheel from the front leg 11 and the rear leg 14 in the folded state. The baby carriage can be further reduced by removing the wheel 14w.

  In addition, according to the present embodiment, the pair of front and rear frame members that extend in the front-rear direction, the front end is rotatably connected to the lower end portion of the front leg 11, and the rear end is rotatably connected to the lower end portion of the rear leg 14. 17 is further provided, the front leg 11, the rear leg 14, and the front-rear direction frame member 17 constitute a triangular frame. Therefore, the frame rigidity of the baby carriage can be improved with a simple configuration.

  Next, another embodiment of the present invention will be described. FIG. 9 is a side view showing another embodiment of the present invention, and shows a developed state of the folding baby carriage. FIG. 10 is a side view showing a seat frame member taken out and corresponds to FIG. 9 and 10 show a state observed from the outside in the width direction of the baby carriage. FIG. 11 is a rear view of the seat frame member and the like taken out and corresponds to 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, a link member 38 that connects the headrest portion 32 and the rear leg 14 and an operation mechanism 51 that operates the lock member 42 are provided.

  The rear leg 14 is pivotally connected to the seat frame member 12 by a pivot 22. The backrest 33 extends in the vertical direction behind the pair of seat frame members 12. The headrest portion 32 is rotatably connected to the upper end of the backrest portion 33. The link member 38 extends in the vertical direction, and has an upper end connected to the headrest portion 32 and a lower end connected to the upper end portion of the rear leg 14 in front of the pivot 22. The link member 38 may be a string or a belt, may be a cloth that divides a side portion of the infant seat 31, or may be a bar member that is not easily bent.

  As shown in FIG. 9, the headrest portion 32 is used by getting up from the backrest portion 33 in the deployed state of the baby carriage. On the other hand, it is better to fold the headrest 32 while folding the baby carriage. According to this embodiment, during the folding operation, the upper end of the rear leg 14 rotates downward about the pivot 22. As the rear leg 14 rotates, the link member 38 pulls the headrest portion downward, and the headrest portion can be automatically folded back.

  The operation mechanism 51 includes a sliding member 52, a wire 53, an operation element 54, and springs 57 and 60, and the first lock member 42 is set according to an operation input to the operation element 54 by an operator of the baby carriage. To any one of the third positions.

  12 is an enlarged longitudinal sectional view showing a seat frame member and the like corresponding to FIG. 13 is an enlarged longitudinal sectional view showing a seat frame member and the like corresponding to FIG. FIG. 14 is a cross-sectional view of the locking member corresponding to FIGS. 12 and 13. 9 to 14 show the deployed state of the baby carriage. 12 and 14 show the first position of the lock member, and FIG. 15 is a sectional view showing the lock member taken out. The sliding member 52 is built in the lower end of the push rod 15 and can slide in the longitudinal direction of the push rod 15. On the side surface of the sliding member 52, a recess 55 and an inclined surface 56 which is the bottom surface of the recess 55 and is inclined with respect to the longitudinal direction of the push rod 15 are formed.

  The upper end of the sliding member 52 is coupled to the lower end of the wire 53. A wire 53 serving as a connection means of the operation mechanism 51 extends along the push rod 15 and the handle member 16, and an upper end of the wire 53 is connected to an operation element 54 provided at the center in the width direction of the handle member 16. The wire 53 moves the sliding member 52 in response to the case where the operator of the baby carriage does not push in the operation element 54 which is the operation means of the operation mechanism 51 at all, the case where the operator pushes it in one step, and the case where the pusher pushes in two steps. The sliding member 52 is sequentially lifted upward, and the sliding member 52 sequentially displaces the lock member 42 to a first position, a third position, and a second position as will be described later. Although not shown, even if the operation mechanism 51 and the unfolded state locking mechanism 41 are provided in each of the pair of seat frame members 12, the upper ends of the pair of wires are connected to one operator 54. What is necessary is just one operation element 54.

  A boundary wall 61 is formed at a location above the sliding member 52 in the push rod 15. The boundary wall 61 divides the internal space of the push rod 15 vertically. A hole having a sufficient inner diameter for the wire 53 to pass through is formed in the boundary wall 61, and the spring 60 is contracted between the boundary wall 61 and the sliding member 52. The spring 60 urges the sliding member 52 downward.

  A seat surface sheet 35 is stretched between the pair of rear legs 14. The seat surface sheet 35 is a fabric constituting the seat portion of the infant seat, and is fixed so as to be wound around the upper end region of the rear leg 14 straddling from the front to the rear of the pivot 22. The seat sheet 35 is connected to the lower end edge of the backrest portion 33.

  The seat frame member 12 is an elongated box having a sufficient cross-sectional area to receive the front leg 11 and the push bar 15. Holes 12c and 12d through which the front leg 11 passes and holes 12e and 12f through which the push rod 15 pass are formed at both ends of the seat frame member 12, respectively.

  The lock member 42 disposed on the upper end portion 12b of the seat frame member 12 faces the outer periphery of the lower end portion of the push rod 15 in the deployed state. As shown in FIG. 15, the lock member 42 includes a plate 42p and a long protrusion 42a and a short protrusion 42b that protrude from both ends of the plate 42p. As shown in FIG. 14, the plate 42 p is accommodated in an operation mechanism cover 58 attached to the outer periphery of the seat frame member 12. The plate 42p is urged so as to approach the seat frame member 12 by a spring 57 that is contracted inside the operation mechanism cover 58.

  Two through holes 12h and 12j are formed in the outer periphery of the seat frame member 12 where the operation mechanism cover 58 is attached. The through holes 12h and 12j receive the long protrusions 42a and the short protrusions 42b, respectively.

  As shown in FIG. 14, the long protrusion 42 a and the short protrusion 42 b protrude in parallel with a space therebetween and extend in a direction perpendicular to the longitudinal direction of the seat frame member 12. Of these, as shown in FIG. 12, the long protrusion 42 a is engaged so as to penetrate the engaged portion 44 (hole) formed on the outer periphery of the lower end portion of the push rod 15, and the tip thereof extends to the recess 55. ing. In the unfolded state, the long protrusion 42 a faces the most recessed portion of the recess 55, and the lock member 42 is biased to the sliding member 52 by the spring 57, so the tip of the long protrusion 42 a is the most recessed portion of the recess 55. Has entered. As a result, the lock member 42 is brought to the first position closest to the push rod 15. In the first position, the short protrusion 42b of the lock member 42 is engaged so as to pass through the engaged portion 43 (hole) formed in the upper end portion of the front leg 11, as shown in FIG.

  FIG. 16: is a side view which shows a mode that other embodiment was made into the conveyance state. The transported baby carriage can stand on its ground by connecting the connecting member 13 and the front wheel 11w to the ground G. Therefore, the dimension in the front-rear direction when standing independently is reduced, and the place where the baby carriage is placed can be reduced. In FIG. 16, the hood 37 is folded along the push rod 15. In addition, the hood 37 may be folded along the seat frame member 12. When the operator of the baby carriage grabs the handle member 16 and tilts it, only the front wheel 11w comes into contact with the ground G. Accordingly, by rotating only the front wheel 11w while being inclined, the transported baby carriage can be transported like a suitcase.

  FIG. 17 is an enlarged longitudinal sectional view showing a seat frame member and the like. 18 is a cross-sectional view of the operation mechanism and the lock member corresponding to FIG. 17 and 18 show the third position of the locking member. As described above, when the locking member 42 is in the first position in the unfolded state, when the operator of the baby carriage pushes the operation element 54 in one step, the wire 53 pulls up the sliding member 52 in one step.

  When the sliding member 52 is pulled up one step by the wire 53 and slides upward, the sliding member 52 is in the position shown in FIGS. 17 and 18, and the tip of the long protrusion 42 a is brought into sliding contact along the inclined surface 56 along with this, The inclined surface 56 retracts the long protrusion 42a to the outside of the push rod 15. As a result, the lock member 42 is displaced to the third position.

  Since the lock member 42 is urged toward the sliding member 52 by the spring 57, the long protrusion 42a passes through the engaged portion 44 of the through hole as shown in FIG. And the locking member is brought into the third position.

  That is, at the third position of the lock member 42, the long protrusions 42a of the lock member 42 penetrate the engaged portion 44 that is a through hole and engage with each other. Further, the short protrusions 42b of the lock member 42 come out of the engaged portion 43, which is a through hole, and do not engage with each other.

  FIG. 19 is a side view showing another embodiment in a folded state. In the folded state, the push rod 15 is drawn so as to overlap the seat frame member 12, and the hood 37 is folded along the seat frame member 12, thereby further reducing the size of the baby carriage. Even in the folded baby carriage, the connecting member 13 and the front wheel 11w can be grounded on the ground G and can stand on their own as in the transport state described above. The bracket 11 b that rotatably supports the front wheel 11 w can be separated from the connecting member 13. Further, the bracket 14 b that rotatably supports the rear wheel 14 w can be separated from the connecting member 21. Therefore, by removing the front wheel 11w and the rear wheel 14w from the folded baby carriage, the size of the baby carriage can be further reduced, and it is very advantageous in that it does not take a place when the baby carriage is not used.

  FIG. 20 is an enlarged longitudinal sectional view showing a seat frame member and the like. FIG. 21 is a cross-sectional view of the operation mechanism and the lock member corresponding to FIG. 20 and 21 show the second position of the locking member. When the operator of the baby carriage pushes the operation element 54 further in one step, the wire 53 pulls up the sliding member 52 by one step, and the sliding member 52 slides upward one step from the position shown in FIGS. The position is as shown in FIGS. At this time, the tip of the long protrusion 42 a slides along the inclined surface 56, and the inclined surface 56 causes the long protrusion 42 a to recede to the outside of the push rod 15. As a result, the long protrusion 42a is retracted from the recess 55, and the lock member 42 is displaced to the second position.

  The sliding member 52 is further lifted by one step by the wire 53 and slides upward. In association with this, the tip of the long protrusion 42 a faces the sliding member side surface 59 below the inclined surface 56. Since the locking member 42 is urged toward the sliding member 52 by the spring 57, as shown in FIG. 20, the tip of the long protrusion 42a contacts the side surface 59, and the sliding member 52 moves the locking member 42 outward. It is further displaced one step (to the operating mechanism cover 58 side). Thereby, the lock member is brought to the second position.

  In the second position, the long protrusions 42a of the lock member 42 come out of the engaged portion 44, which is a through hole, and do not engage with each other. Further, the short protrusions 42b of the lock member 42 also come out of the engaged portion 43, which is a through hole, and do not engage with each other.

  As described above, the lock member 42 is displaced from the first position through the third position to the second position by the operation mechanism 51. When the operator of the baby carriage operates the operation element 54 in the reverse procedure to the above-described operation, the sliding member 52 is urged downward by the spring 60, and the lock member 42 is moved from the second position to the third position. After that, it can be returned to the first position.

  By the way, according to the other embodiment described above, the operation mechanism 51 is provided with the operation element 54 as the operation means provided on the upper end side of the push rod 15 and the lock member 42 provided on the lower end side of the push rod 15. It has a sliding member 52 as an operating means to be operated, and a wire 53 as a connecting means for connecting the operating means and the operating means. The operation mechanism 51 sets the lock member 42 to any one of the first to third positions in accordance with an operation input to the operation element 54 by the operator of the baby carriage. Therefore, the operator who holds the handle member 16 can remotely operate the unfolded state lock mechanism 41, and the operability is improved.

  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.

  DESCRIPTION OF SYMBOLS 11 Front leg, 12 Seat frame member, 13 Connecting member, 14 Rear leg, 15 Push rod, 16 Handle member, 17 Front-rear direction frame member, 18, 19 Width direction frame member, 22, 23, 24 Axis, 25 Width direction frame member , 26 pivot, 31 infant seat, 32 headrest part, 33 backrest part, 35 seat surface seat, 36 reclining belt, 37 top, 38 link member, 41 unfolding state locking mechanism, 42 locking member, 43, 44 engaged part , 51 operation mechanism, 52 sliding member, 53 wire, 54 operation element, 55 depression, 56 inclined surface, 57 spring, 58 operation mechanism cover, 59 side surface, 60 spring, 61 boundary wall.

Claims (8)

A pair of seat frame members; a pair of push rods extending upward from the seat frame members;
Pair and a pair of front legs extending downwardly from said seat frame member, the lower end with the upper end region extends forwardly beyond said seat frame member and connected to the seat frame member via a pivot extending downward from the seat frame member With rear legs,
The push bar moves to the seat frame member side in a folded state,
The front leg is a foldable baby carriage configured to move to the seat frame member in a folded state. The push rod, the seat frame member, and the front leg extend in parallel to each other,
2. The folding type according to claim 1, wherein the push bar and the front leg slide so as to overlap the seat frame member in a folded state, and a vertical dimension from the upper end of the push bar to the lower end of the front leg is reduced. baby carriage. A deployment state locking mechanism that regulates relative movement of the push rod, the seat frame member, and the front leg in the deployed state of the baby carriage;
The deployed state locking mechanism is provided on the seat frame member, and includes a lock member that engages with the push rod and the front leg at a first position and is disengaged with the push rod and the front leg at a second position. The foldable baby carriage according to claim 1 or 2.   The foldable baby carriage according to claim 3, wherein the lock member engages with the push bar at a third position and disengages with the front leg.   Operating means provided on the upper end side of the push rod; operating means provided on the lower end side of the push rod for operating the locking member; and connecting means for connecting the operating means and the operating means. The foldable baby carriage according to claim 3, further comprising an operation mechanism that moves the lock member to any position in accordance with an operation input to the operation means.   The foldable baby carriage according to any one of claims 1 to 5, further comprising wheels detachably attached to lower ends of the front legs and the rear legs. The rear leg is pivotally connected to the seat frame member;
A backrest portion extending in the vertical direction behind the pair of seat frame members; a headrest portion rotatably connected to an upper end of the backrest portion; and a link member connecting the headrest portion and the rear leg. The foldable baby carriage according to any one of claims 1 to 6.   A pair of front and rear frame members that extend in the front-rear direction, have a front end rotatably connected to a lower end portion of the front leg, and a rear end rotatably connected to a lower end portion of the rear leg. The foldable baby carriage according to any one of 7 above.

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