JP2012116369A - Carrier for child - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve easiness-to-use by facilitating operation, by folding up by simple operation when storing.SOLUTION: This carrier includes vertical X link members for putting a pair of main column members and a pair of rear leg members in a narrow-width folding state from a wide-width deploying state, longitudinal X link members for putting a pair of front leg members and the pair of rear leg members in a narrow-width folding state from a wide-width deploying state, and a pair of manual operation parts installed via attitude control parts on the upper ends of the pair of main column members and capable of changing an attitude from an initial state attitude to the other attitude. The attitude control parts return an attitude of the pair of manual operation parts to the initial state attitude by interlocking with operation of the vertical X link members and the longitudinal X link members for putting the pair of main column members, the pair of front leg members and the pair of rear leg members in the folding state.

Description

  The present invention relates to a child transporter.

  Conventionally, child transport vehicles such as baby carriages and baby carriages, in particular, small and light child transport vehicles called baby buggy or baby buggy have a folding structure, and when not in use, they are narrow by folding the car body. It can also be stored in a place (see, for example, Patent Document 1).

  In this case, the structure of the frame is a link mechanism including a plurality of links coupled to each other by a rotation shaft, and can be folded in the width direction of the vehicle body and can be leaned against a wall or the like in an upright state. .

JP2003-31485A

  However, in the conventional child transport vehicle, when the frame is folded, the user needs to operate with both hands, which is inconvenient. When storing a children's transport vehicle, it is often difficult to operate with both hands because the user must be able to fold the car body while holding the child with one arm. It is. However, a children's cart that can be folded using a single hand has also been proposed. However, also in this case, when the vehicle body is folded and when the folded vehicle body is raised, the user needs to take a forward bending posture, which is not convenient.

  In addition, when using for everyday shopping, etc., users tend to carry luggage with one hand or hold a child with one arm, so they may walk by pushing the children's transport vehicle with one free hand. In many cases, especially small and light children's carts called baby buggy or infant buggy have separate left and right handle arms. And then push the children's cart. Therefore, it is difficult to run the child transport vehicle straight.

  The present invention solves the problems of the conventional child transport vehicle, and in conjunction with the operation to make the folded state, the pair of manual operation parts return to the initial state posture. An object of the present invention is to provide a child transport vehicle that can be folded by simple operation, is easy to operate, and is easy to use.

  For this purpose, the child transport vehicle of the present invention is a foldable child transport vehicle having a pair of main column members and upper ends connected to the pair of main column members and front wheels attached to the lower ends. A pair of front leg members, a pair of rear leg members whose upper ends are connected to the pair of main column members and rear wheels are attached to the lower ends, the pair of main column members and the pair of rear leg members are X-shaped. An upper and lower X-link member that connects the pair of main pillar members and the pair of rear leg members from a wide deployed state to a narrow folded state, the pair of front leg members, and the pair of rear leg members, Are connected in an X shape, and the pair of front leg members and the pair of rear leg members are changed from a wide expanded state to a narrow folded state, and posture control is performed on the upper ends of the pair of main pillar members. From the initial state posture to other A pair of manual operation units capable of changing postures, and the posture control unit includes the pair of main pillar members, the pair of front leg members, and the pair of front and rear X link members and the front and rear X link members. In conjunction with the operation of bringing the rear leg member into the folded state, the posture of the pair of manual operation units is returned to the initial state posture.

  In another child transport vehicle of the present invention, the pair of manual operation units are separated from each other in the initial state posture, and the pair of main pillar members, the pair of front leg members, and the pair of pair When the rear leg member is in the unfolded state, the posture can be changed to a use state posture that is pseudo integrated with each other.

  In still another child carriage of the present invention, the manual operation unit is a bar-shaped handle arm curved in a substantially L shape, and the posture control unit is configured to handle the handle with respect to an upper end of the main column member. By changing the rotation angle of the lower end of the arm, the posture of the handle arm is changed so that the tip of the handle arm faces forward in the initial posture and the tip of the pair of handle arms corresponds to each other in the posture of use. Let

  In still another child transport vehicle of the present invention, the posture control unit further includes the pair of main pillar members, the pair of front leg members, and the pair of rear leg members in a folded state. The posture of the manual operation unit is locked so that the posture cannot be changed from the initial state posture.

  In still another child transport vehicle of the present invention, the posture control unit further includes an operation member, and the pair of main pillar members, the pair of front leg members, and the pair of rear leg members are in an unfolded state. When the operation member is operated, the posture of the pair of manual operation portions can be changed, and when the operation member is not operated, the posture of the pair of manual operation portions is locked and the posture cannot be changed. And

  In still another child transport vehicle of the present invention, the child carriage further includes a stepping operation unit attached to the front / rear X-link member and extending rearward, and the manual operation unit is held in the state where the manual operation unit is held. When the stepping operation unit is stepped down, the pair of main pillar members, the pair of front leg members, and the pair of rear leg members are operated in a folded state, and the front leg members are moved relative to the main pillar member. The front wheel rises and approaches the manual operation part.

  In still another child transport vehicle of the present invention, when the operation of folding the pair of main pillar members, the pair of front leg members, and the pair of rear leg members is finished, the rear wheel and the foot By supporting the operation unit, it maintains its upright posture and becomes independent.

  According to the present invention, in the child transport vehicle, the pair of manual operation units returns to the initial state posture in conjunction with the operation of folding the child vehicle. Thereby, when storing, it can be folded by a simple operation, the operation is easy and the usability is improved.

It is a perspective view which shows the state by which the child carrier vehicle in embodiment of this invention was expand | deployed. It is a perspective view which shows the folded state of the child carrier vehicle in embodiment of this invention. It is a figure explaining the operation | movement which folds the child carrier vehicle in embodiment of this invention. It is a figure explaining the attitude | position of the handle arm of the child carrier vehicle in embodiment of this invention. It is a figure explaining operation | movement of the action | operation wire of the child carrier vehicle in embodiment of this invention. It is a 1st figure explaining the structure of the rotation mechanism part of the child transporter in embodiment of this invention. It is a 2nd figure explaining the structure of the rotation mechanism part of the child transporter in embodiment of this invention. It is a 1st figure explaining operation | movement in case the rotation mechanism part in embodiment of this invention exhibits a rotation lock function. It is a 2nd figure explaining operation | movement in case the rotation mechanism part in embodiment of this invention exhibits a rotation lock function. It is a 1st figure explaining operation | movement in case the rotation mechanism part in embodiment of this invention exhibits a return function. It is a 2nd figure explaining operation | movement in case the rotation mechanism part in embodiment of this invention exhibits a return function.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a developed state of a children's transport vehicle according to an embodiment of the present invention, FIG. 2 is a perspective view showing a folded state of the child transport vehicle according to an embodiment of the present invention, and FIG. These are the figures explaining the operation | movement which folds up the child carrier vehicle in embodiment of this invention. 1 and 2, (a) and (b) are perspective views from different viewpoints, and in FIG. 3, (a) shows a children's transport vehicle according to an embodiment of the present invention. b) shows a conventional child carrier.

  In the figure, reference numeral 1 denotes a children's transport vehicle according to the present embodiment, which is a vehicle mainly intended to carry and carry infants, and is generally a vehicle called a baby carriage, stroller or the like. . Further, the child transport vehicle 1 in the present embodiment is a small and light vehicle having a foldable structure and typically belonging to a category called baby buggy or infant buggy. It does not have to belong to such a category, and may be of any kind as long as it has a foldable structure.

  In the present embodiment, expressions indicating directions such as upper, lower, left, right, front, rear, etc. used for explaining the configuration and operation of each part of the child transport vehicle 1 are absolute. It is not relative, and is appropriate when the child carriage 1 or its parts are in the posture shown in the figure, but when the posture of the child carriage 1 or its parts changes, the posture Should be interpreted according to changes in

  The child transport vehicle 1 includes a frame 20 having a folding structure, a seat 11 attached to the frame 20, a front wheel 12 and a rear wheel 13 rotatably attached to a lower end of the frame 20, and the frame 20 A kick bar 15 serving as a stepping operation unit extending rearward from the rear end of the rear end and a handle arm 16 serving as a manual operation unit attached to the upper end of the frame 20 are provided.

  The frame 20 is provided with a foldable link mechanism. When the link mechanism is used, the frame 20 is in an unfolded state as shown in FIG. 1, and is folded when stored as shown in FIG. It becomes the state. The seat 11 is a portion on which an infant is seated and is made of a sheet-like member having flexibility. When the seat 11 is used, the seat 11 is unfolded as shown in FIG. When stored, as shown in FIG. 2, it is in a folded state.

  The front wheel 12 and the rear wheel 13 are respectively attached to the left and right sides of the frame 20. In the example shown in FIG. 1, the front wheel 12 and the rear wheel 13 each have two wheels attached to the left side and two wheels attached to the right side. No, only one wheel may be attached.

  Further, as shown in FIG. 3A, the kick bar 15 is a member that a user steps on with his / her foot to input force when the child transport vehicle 1 is folded, and the rear wheel 13 It is a member that functions as a support member that cooperates and maintains the folded child transport vehicle 1 in a standing posture, that is, a stand.

  Furthermore, the handle arm 16 is a member that is attached to the left and right sides of the upper end of the frame 20 via a rotation mechanism unit 40 as a posture control unit, and has a rod shape that is curved in a substantially L shape (or a U shape). It is a member. Typically, by forming a coating made of a flexible resin or the like around a metal pipe-shaped member, it is formed so that the user can easily hold it by hand. As shown in FIGS. 1 and 2, the handle arm 16 has an end portion 16 a that faces obliquely upward and forward as shown in FIGS. 1 and 2. By the operation described later, the posture can be changed so that the distal end portions 16a of the left and right handle arms 16 face each other. Thereby, since the left and right handle arms 16 are integrated in a pseudo manner, the user can easily run the child transport vehicle 1 straight even if the handle arms 16 are operated with one hand.

  The frame 20 includes a main column member 21 as a first link member, a front leg member 22 as a second link member, a rear leg member 23 as a third link member, and a front and rear X link member as a fourth link member. 24, a front-rear connecting member 25 as a fifth link member, an upper and lower X link member 26 as a sixth link member, and a bent link member 27 as a seventh link member. Each of the first to seventh link members is a pair of members, and is disposed on both the left and right sides of the frame 20. Each of the front and rear X-link members 24 is a member that intersects with each other and connects the left and right sides of the frame 20 and is rotatably coupled by a pivot 24a at the intersecting portion. Similarly, each of the upper and lower X link members 26 is a member that intersects with each other and connects the left and right sides of the frame 20 and is rotatably coupled by a pivot 26a at the intersecting portion. An operation wire 41 for operating the rotation mechanism 40 is disposed along the upper and lower X link members 26.

  The upper end of the front leg member 22 is rotatably coupled to the lower end of the main column member 21 via the first joint 31. The upper end of the rear leg member 23 is coupled to the upper side of the first joint 31 in the main column member 21 via the second joint 32 so as to be rotatable. Furthermore, the front end of the front / rear X link member 24 is coupled to the front leg member 22 above the front wheel 12 via a third joint 33 so as to be rotatable. Further, on the upper side of the rear wheel 13 in the rear leg member 23, the rear end of the front / rear X link member 24, the rear end of the front / rear connection member 25, and the lower end of the upper / lower X link member 26 are interposed via the fourth joint 34. And are rotatably coupled. The front end of the kick bar 15 is fixed to the rear end of the front / rear X link member 24.

  Further, the upper end of the upper and lower X link members 26 is rotatably coupled to the lower side of the rotation mechanism portion 40 in the main column member 21 via a fifth joint 35. Furthermore, the outer end of the bending link member 27 is rotatably coupled to the lower end of the upper and lower X link members 26 via a sixth joint 36. Further, the inner ends of the bending link member 27 are rotatably coupled via a seventh joint 37.

  Note that a lock member 14 is attached to the seventh joint 37 to prohibit the rotation of the bending link members 27. When the lock member 14 is actuated, the left and right bent link members 27 are substantially straight as shown in FIG. 1B, that is, the seventh joint 37 extends and the left and right bent link members 27 extend. The frame 20 is locked in a state where the angle is approximately 180 degrees and the rotation of the bending link members 27 is prohibited, so that the deployed state of the frame 20, that is, the use state is maintained, and the frame 20 is not bent. It is forbidden. Further, when the lock member 14 is operated to release the lock, the bent link members 27 can rotate, and the seventh joint 37 is bent as shown in FIG. Can be bent at the seventh joint 37.

  Here, the operation | movement which makes the child carrier 1 in this Embodiment the folded state as shown in FIG. 2 from the expanded state as shown in FIG. 1 is demonstrated.

  First, the operation of folding the conventional child transport vehicle 101 as shown in FIG. 3B will be described. The child transport vehicle 101 includes a frame 120, a front wheel 112, a rear wheel 113, and a handle arm 116, and the frame 120 includes a foldable link mechanism as in the present embodiment. And

  When the conventional child transport vehicle 101 is folded, as shown in FIGS. 3 (b) and (1), the user manually applies force in the direction indicated by the arrow to the handle arm 116 (counterclockwise in the figure). A force in the direction of rotation). At this time, the front wheel 112 and the rear wheel 113 function as fulcrums. Then, the frame 120 starts to bend, and the conventional child transport vehicle 101 changes as shown in FIGS. 3 (b) (2) to (4), and then shown in FIGS. 3 (b) (5). In such a folded state, that is, a storage state.

  In addition, while the state of the child transport vehicle 101 changes as shown in FIGS. 3B, 3B, and 4B, the user applies force in the direction indicated by the arrow to the handle arm 116 by hand. Continue to grant. Therefore, the user needs to take a forward bending posture. When the child transport vehicle 101 in a folded state as shown in FIGS. 3 (b) and 3 (5) is stood up against a wall or the like, the user lifts the handle arm 116 by hand. Since it is necessary to erect the child transport vehicle 101, a forward bending posture is similarly applied. Furthermore, the child transport vehicle 101 cannot stand upright and maintain its standing posture. Of course, it is possible to attach a detachable stand such as a foldable stand, but in this case, the user needs to put in and out the stand by hand.

  On the other hand, when the child transport vehicle 1 in the present embodiment is folded, as shown in FIGS. 3 (a) and (1), the user holds the handle arm 16 with his hand and kicks the kick bar 15 with one foot. Is applied to the kick bar 15 in the direction indicated by the arrow (downward force in the figure). Then, the rear wheel 13 located in the vicinity of the kick bar 15 functions as a fulcrum, and the front wheel 12 starts to be displaced in the direction indicated by the arrow (clockwise direction in the figure). Moreover, after the frame 20 starts to bend and the child transport vehicle 1 changes as shown in FIGS. 3 (a) (2) to (4), it is shown in FIGS. 3 (a) and (5). It will be in such a folded state, ie, a storage state.

  In addition, while the state of the child transport vehicle 1 changes as shown in FIGS. 3 (a), (2) to (4), the user holds the handle arm 16 by hand and the kick bar 15 by one foot. Continue to step down. Therefore, the rear wheel 13 functions as a fulcrum, the front leg member 22 bends with respect to the main column member 21, and the front wheel 12 rises and approaches the handle arm 16. 3 (a) and 5 (5), the folded child carrier 1 is supported by the kick bar 15 and the rear wheel 13, and is maintained in a standing posture. can do. In this case, the kick bar 15 functions as a stand in cooperation with the rear wheel 13.

  As described above, in the present embodiment, one of the link members extending in the front-rear direction of the frame 20 including the foldable link mechanism extends backward toward one rear end of the front-rear X link member 24. A kick bar 15 is attached. The kick bar 15 functions as a stepping operation unit when the child transport vehicle 1 is folded, and also functions as a stand for allowing the folded child transport vehicle 1 to stand upright in a standing posture.

  As a result, the user can hold the handle arm 16 with one hand and fold the child carriage 1 in a deployed state, that is, in a used state, with a simple operation of simply stepping on the kick bar 15 with one foot. While being able to be in a standing position in the folded state, the folded child transport vehicle 1 can be made to stand in a standing position. That is, the user can put the child transport vehicle 1 in use in the stowed state using only one hand and one leg without taking a forward bending posture, and can stand up in a standing posture. Therefore, the user can easily store the child transport vehicle 1 in an upright posture even when one hand is closed (blocked) as in a state of holding the child with one arm.

  Next, the rotation mechanism unit 40 will be described in detail. First, a change in the posture of the handle arm 16 by the rotation mechanism 40 will be described.

  FIG. 4 is a view for explaining the posture of the handle arm of the child transport vehicle according to the embodiment of the present invention, and FIG. 5 is a view for explaining the operation of the operation wire of the child transport vehicle according to the embodiment of the present invention. 4A is a diagram showing the attitude of the handle arm as viewed from the left side, FIG. 4B is a diagram showing the attitude of the handle arm as viewed from the rear, and FIG. FIG. 4 is a schematic view of the child transport vehicle in use as viewed from above, (b) is an enlarged view of the main part of (a), and (c) is an enlarged view of the main part in a state of being folded.

  The rotation mechanism unit 40 in the present embodiment exhibits a rotation lock function that rotates the handle arm 16 and locks it at a predetermined rotation angle, and a return function that rotates the handle arm 16 to return to the initial state posture.

  With the rotation lock function of the rotation mechanism unit 40, the handle arm 16 can rotate about the axis of the main column member 21 with respect to the main column member 21 to change its posture stepwise. In the example shown in FIG. 4, (1) shows the initial state posture, (2) shows the intermediate state posture, and (3) shows the use state posture as the final state posture. In other words, in the example shown in FIG. 4, the handle arm 16 can change its posture in three stages including the initial state posture. Note that the posture change stage does not necessarily have to be three stages. For example, the intermediate state may be omitted and the initial state posture and the use state posture may be two stages, or the intermediate state posture may be two or more stages. In total, the number of stages may be four or more. Here, for convenience of explanation, only the case of three stages will be described.

  In FIG. 4, the initial state posture shown in (1) is the same as the state shown in FIGS. 1 and 2, and the child carrier 1 is folded, that is, when it is in the stowed state, the handle The posture of the arm 16 is always the initial state posture. In the initial state posture, the handle arm 16 has the tip portion 16a facing obliquely upward and forward. The rotation angle of the handle arm 16 with respect to the main column member 21 in the initial state posture is assumed to be zero degrees as a reference angle.

  4, in the intermediate state posture shown in (2), the left and right handle arms 16 are in a posture in which the distal end portions 16a face inward from the initial state posture, that is, the distal end portions 16a of the left and right handle arms 16 are However, the posture is closer than the initial state posture. The rotation angle of the handle arm 16 with respect to the main column member 21 in the intermediate state posture is, for example, 40 degrees, but can be set to an appropriate angle.

  Further, in FIG. 4, in the use state posture shown in (3), the left and right handle arms 16 are in a posture in which the distal end portions 16a face further inward than the intermediate state posture, and the distal end portions 16a of the left and right handle arms 16 Are facing each other. Thereby, since the left and right handle arms 16 are integrated in a pseudo manner, the user can easily run the child transport vehicle 1 straight even if the handle arms 16 are operated with one hand. The rotation angle of the handle arm 16 with respect to the main column member 21 in the use state posture is, for example, 80 degrees, but can be set to an appropriate angle.

  In the example shown in (3) of FIG. 4B, the distal end portions 16a of the left and right handle arms 16 are in contact with each other, but the distal end portions 16a are not necessarily in contact with each other, and are separated from each other. That is, they may be in close proximity. Even in this case, it is desirable that the distance between the distal end portions 16a is within such a distance that the user can grip the distal end portions 16a of both handle arms 16 simultaneously with one hand.

  As shown in FIG. 5A, the rotation mechanism 40 in the present embodiment includes a lower outer cylinder 42 as a cylindrical frame-side outer cylinder that is an upper end portion of the main column member 21, a handle, An upper outer cylinder portion 43 as a handle-side outer cylinder portion, which is a lower end portion of the arm 16 and is rotatably connected to the lower outer cylinder portion 42, and the lower outer cylinder portion 42 and the upper outer cylinder A connecting cylinder portion 44 that connects the portion 43 so as to be unseparable and rotatable, and an operation pin 45 as an operation member that can be operated by a user to change the posture of the handle arm 16.

  When the child transport vehicle 1 is in a use state, that is, in a deployed state, the user rotates the handle arm 16 while operating the operation pin 45 to change the posture of the handle arm 16. The initial state posture can be changed to the intermediate state posture or the use state posture. When the user performs an operation of folding the child transport vehicle 1 in the unfolded state, the posture of the handle arm 16 automatically returns to the initial state posture from the intermediate state posture or the use state posture. This is because the operation wire 41 operates the rotation mechanism 40 by the operation of folding the child transport vehicle 1.

  As shown in FIG. 5A, the left and right working wires 41 are respectively disposed along the upper and lower X link members 26, and the lower ends are connected to the wire connecting portions 27 a in the middle of the bent link member 27. . Further, the upper end of the working wire 41 and the vicinity thereof are disposed so as to pass through the inside of the cylindrical main column member 21. The upper end of the working wire 41 is connected to the wire connection pin 46 in the lower outer cylinder portion 42 as will be described later.

  As shown in FIG. 5 (b), when the child transport vehicle 1 is in a deployed state, the seventh joint 37 extends, and the left and right bent link members 27 become substantially straight, and the wire connecting portion 27a is in a low position. Therefore, the lower end of the working wire 41 is pulled downward by the wire connecting portion 27 a, and the wire connection pin 46 to which the upper end of the working wire 41 is connected receives a downward tension via the working wire 41. Has been granted.

  On the other hand, when the child carrier 1 is folded, the seventh joint 37 is bent and the left and right bent link members 27 are bent at the seventh joint 37 as shown in FIG. Thus, the position of the wire connecting portion 27a is raised. Therefore, the state where the lower end of the operating wire 41 is pulled downward by the wire connecting portion 27a is released, and the downward tension applied to the wire connecting pin 46 to which the upper end of the operating wire 41 is connected is also released. . As a result, the rotation mechanism unit 40 is actuated to return the attitude of the handle arm 16 that has been in the intermediate state or in the use state to the initial state.

  As described above, in the child transport vehicle 1 according to the present embodiment, even if the posture of the handle arm 16 is the use state posture and the left and right handle arms 16 are pseudo-integrated, the user can Thus, when the child transport vehicle 1 in the unfolded state is folded with a simple operation of holding the handle arm 16 with one hand and stepping on the kick bar 15 with one foot, the posture of the handle arm 16 is automatically initialized. Return to state posture. Therefore, the user can store the child transport vehicle 1 in an upright posture more easily.

  Next, the structure of the rotation mechanism unit 40 will be described in detail.

  FIG. 6 is a first diagram illustrating the structure of the rotation mechanism of the child transporter according to the embodiment of the present invention, and FIG. 7 illustrates the structure of the rotation mechanism of the child transporter according to the embodiment of the present invention. It is the 2nd figure to do. 6A is a longitudinal sectional view of the rotating mechanism portion, and FIG. 6B is a view for explaining a connection structure of the frame side outer cylinder portion and the handle side outer cylinder portion. In FIG. FIG. 6 is a diagram for explaining the structure of a portion that exhibits a return function, and FIG. 6B is a diagram for explaining the structure of a portion that exhibits a rotation lock function.

  As shown in FIG. 6A, a range of a predetermined length from the lower end of the upper outer cylinder portion 43 is rotatably inserted into the lower outer cylinder portion 42 from the upper end of the lower outer cylinder portion 42. ing. Further, a thick portion 44b of the connecting cylinder portion 44 is fixed in a non-rotatable manner in a range 43a above the upper end of the lower outer cylinder portion 42 on the outer peripheral surface of the upper outer cylinder portion 43. And the upper end vicinity part of the said lower side outer cylinder part 42 is in the state inserted in the clearance gap between the outer surface of the upper side outer cylinder part 43, and the thin part 44c of the cylinder part 44 for a connection. A flange portion 42 a that protrudes outward is formed on the outer peripheral surface of the upper end of the lower outer cylindrical portion 42, and the flange portion 42 a is an inner peripheral surface of the thin portion 44 c of the connecting cylindrical portion 44. Is fitted into a fitting groove 44a formed so as to be movable. Thereby, the upper outer cylinder part 43, the connecting cylinder part 44, and the lower outer cylinder part 42 are connected to each other so as to be rotatable with respect to each other and immovable in the axial direction.

  A lower return operating cylinder 51 is inserted inside the lower outer cylinder portion 42. The lower return working cylinder 51 has an inner diameter and an outer diameter that are substantially the same as the inner diameter and the outer diameter of the upper outer cylinder portion 43, and is not rotatable with respect to the lower outer cylinder portion 42 and is movable in the axial direction. Is attached. A lower jaw clutch portion 63 is formed at the upper end of the lower return operation cylinder 51, and the lower jaw clutch portion 63 is formed at the lower end of the upper outer cylinder portion 43 that functions as an upper return operation cylinder. The upper jaw clutch portion 64 can be engaged (engaged). The lower jaw clutch portion 63 and the upper jaw clutch portion 64 are portions that function as a so-called spiral jaw clutch, which is a kind of one-way clutch, and are inclined portions 63a and 64a inclined with respect to the axial direction. And vertical portions 63b and 64b parallel to the axial direction.

  A lower coil spring 55 as an urging member is disposed below the lower return operation cylinder 51. Note that the lower end of the lower coil spring 55 is prohibited from being displaced downward by a spring pressing pin 48 as a positioning member. The spring pressing pin 48 is inserted into and fixed to a spring pressing pin fixing hole 48a formed on the wall surface of the lower outer cylinder portion 42. The lower coil spring 55 biases the lower return operating cylinder 51 upward.

  A lower rotation lock cylinder 52 is inserted inside the lower return operation cylinder 51. The lower rotation lock cylinder 52 is attached to the lower outer cylinder portion 42 so as not to rotate and to move in the axial direction. On the other hand, an upper rotation lock cylinder 53 is inserted into the upper outer cylinder portion 43 that functions as an upper return operation cylinder. The upper rotation lock cylinder 53 has an inner diameter and an outer diameter that are substantially the same as the inner diameter and outer diameter of the lower rotation lock cylinder 52, and is attached to the upper outer cylinder portion 43 so as not to rotate and to be movable in the axial direction. ing. A lower dog clutch portion 61 is formed at the upper end of the lower rotation lock cylinder 52, and the lower dog clutch portion 61 meshes with an upper dog clutch portion 62 formed at the lower end of the upper rotation lock cylinder 53. It is possible. The lower dog clutch portion 61 and the upper dog clutch portion 62 have a pair of long teeth 61a and 62a extending long in the axial direction, and a recess 61b formed between the teeth. And 62b.

  On the upper side of the upper rotation lock cylinder 53, an upper coil spring 56 as an urging member is disposed. The upper end of the upper coil spring 56 is prohibited from being displaced upward by a spring pressing ring 56a as a positioning member. The spring pressing ring 56 a is fixed to the inner peripheral surface of the upper outer cylinder portion 43. The upper coil spring 56 urges the upper rotation lock cylinder 53 downward.

  Further, a cylindrical inner sleeve 54 is inserted inside the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53. The inner sleeve 54 is attached to the lower return actuating cylinder 51 so as not to rotate but to move in the axial direction.

  The operation pin 45 passes through an operation pin slide hole 45a which is a slit-like long hole formed in the wall surface of the upper outer cylinder portion 43 so as to extend in the axial direction. The spring operation pin fixing hole 45b formed on the wall surface is inserted and fixed. As a result, the upper rotation lock cylinder 53 cannot rotate with respect to the upper outer cylinder portion 43 and is movable in the axial direction. When the user moves the operation pin 45 upward in the axial direction, the upper rotation lock cylinder 53 is pivoted against the upper outer cylinder portion 43 against the urging force of the upper coil spring 56. Move upward in the direction.

  Further, the wire connection pin 46 functions as a tension receiving member that receives a downward tension from the operating wire 41 in the rotation mechanism 40. The wire connection pin 46 passes through the wire connection pin slide first hole 46a which is a slit-like long hole formed in the wall surface of the lower outer cylindrical portion 42 so as to extend in the axial direction. A slit-like long hole that is inserted into and fixed to the spring wire connecting pin fixing first hole 46b formed on the wall surface of the return operation cylinder 51 and extends in the axial direction on the wall surface of the lower rotation lock cylinder 52. Is passed through the wire connection pin slide second hole 46c, and is inserted into and fixed to the spring wire connection pin fixing second hole 46d formed in the wall surface of the inner sleeve 54.

  Further, the guide pin 47 is inserted and fixed in a guide pin fixing first hole 47 a formed in the wall surface of the lower outer cylinder portion 42, and extends in the axial direction on the wall surface of the lower return operation cylinder 51. The guide sleeve slide first hole 47b, which is a slit-like long hole formed, passes through the guide pin fixing second hole 47c formed in the wall surface of the lower rotation lock cylinder 52 and is fixed, and the inner sleeve 54 is inserted. It passes through a guide pin slide second hole 47d which is a slit-like long hole formed so as to extend in the axial direction on the wall surface.

  By means of the wire connection pin 46 and the guide pin 47, the lower return operation cylinder 51 and the inner sleeve 54 cannot rotate with respect to the lower outer cylinder part 42 and the lower rotation lock cylinder 52 and can move in the axial direction. It has become. Since the upper end of the operation wire 41 is connected to the wire connection pin 46, a downward tension is applied via the operation wire 41 when the child transport vehicle 1 is in a deployed state. Is done. Thus, the lower return actuating cylinder 51 is moved downward in the axial direction with respect to the lower outer cylinder portion 42 and the lower rotation lock cylinder 52 against the urging force of the lower coil spring 55 together with the inner sleeve 54. Move towards.

  Next, the operation of the rotation mechanism unit 40 will be described. First, the operation when the handle arm 16 rotates relative to the main column member 21 by the rotation lock function of the rotation mechanism 40 will be described.

  FIG. 8 is a first diagram illustrating the operation when the rotation mechanism unit according to the embodiment of the present invention exhibits a rotation lock function, and FIG. 9 illustrates the operation of the rotation mechanism unit according to the embodiment of the present invention. It is a 2nd figure explaining operation | movement in the case of doing. In FIG. 8, (a) is a diagram showing a locked state in the initial state posture, (b) is a diagram showing a state in which the lock is released in the initial state posture, and (c) is a handle up to an intermediate state posture. 9A and 9B are diagrams illustrating a state in which the arm is rotated, in which FIG. 9A is a diagram illustrating a state in which the arm is locked in an intermediate state posture, and FIG. 9B is a state in which the arm is in use after the lock is released in the intermediate state posture. The figure which shows the state to which the handle arm was rotated to (c) is a figure which shows the state locked by the use condition attitude | position.

  When the handle arm 16 is in the initial state posture, as shown in FIG. 8A, the long teeth 61 a of the lower dog clutch portion 61 at the upper end of the lower rotation lock cylinder 52 are connected to the upper rotation lock cylinder 53. The upper dog clutch portion 62 at the lower end is inserted into the recess 62b between the second tooth and the third tooth from the long tooth 62a. Similarly, the long teeth 66a of the upper dog clutch portion 62 are fitted into the recesses 61b between the second teeth and the third teeth from the long teeth 61a of the lower dog clutch portion 61. As a result, the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are locked so as not to rotate, and as a result, the upper outer cylinder portion 43 is locked against rotation with respect to the lower outer cylinder portion 42, and the handle arm 16. Is locked in the initial state posture.

  Subsequently, as shown in FIG. 8B, when the user pulls the operation pin 45 by hand, that is, when the user moves it upward, the upper rotation lock cylinder 53 is attached to the upper coil spring 56. It moves upward in the axial direction with respect to the upper outer cylinder portion 43 against the force. Thereby, the long teeth 61a of the lower dog clutch portion 61 are separated from the recess 62b of the upper dog clutch portion 62, and similarly, the long teeth 62a of the upper dog clutch portion 62 are separated from the recess 61b of the lower dog clutch portion 61. To do. That is, the meshing between the lower dog clutch portion 61 and the upper dog clutch portion 62 is released. As a result, since the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are unlocked and can rotate, the upper outer cylinder portion 43 can rotate with respect to the lower outer cylinder portion 42, and the handle arm 16 is unlocked.

  Subsequently, as shown in FIG. 8C, when the user rotates the handle arm 16 by 40 degrees while pulling the operation pin 45 by hand, the upper outer cylinder portion 43 is moved to the upper rotation lock cylinder 53. And rotate 40 degrees. Then, the long teeth 61 a of the lower dog clutch part 61 at the upper end of the lower rotation lock cylinder 52 are the first and second teeth from the long teeth 62 a of the upper dog clutch part 62 at the lower end of the upper rotation lock cylinder 53. It opposes the recessed part 62b between these teeth. Similarly, the long teeth 62a of the upper dog clutch portion 62 are opposed to the concave portions 61b between the first teeth and the second teeth from the long teeth 61a of the lower dog clutch portion 61. In addition, the space | interval between adjacent recessed parts 61b and 62b, ie, the pitch of the recessed parts 61b and 62b, is formed so that it may correspond to the rotation angle of 40 degree | times.

  Subsequently, as shown in FIG. 9A, when the user stops pulling the operation pin 45 by hand, that is, when the operation pin 45 is released, the upper rotation lock cylinder 53 is moved to the upper coil. Due to the urging force of the spring 56, it moves downward in the axial direction with respect to the upper outer cylinder portion 43. Accordingly, the long teeth 61a of the lower dog clutch portion 61 are fitted into the recesses 62b of the upper dog clutch portion 62, and similarly, the long teeth 62a of the upper dog clutch portion 62 are fitted into the recesses 61b of the lower dog clutch portion 61. Therefore, the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are locked so as not to rotate. As a result, the upper outer cylinder portion 43 is locked so as not to rotate with respect to the lower outer cylinder portion 42, and the handle arm 16 is locked in the intermediate state posture.

  Subsequently, as shown in FIG. 9B, when the user rotates the handle arm 16 by 40 degrees while pulling the operation pin 45 upward by hand, the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53. Is rotated 40 degrees after the lock is released. Then, the long teeth 61a of the lower dog clutch portion 61 at the upper end of the lower rotation lock cylinder 52 are the first teeth from the long teeth 62a of the upper dog clutch portion 62 and the long teeth 62a at the lower end of the upper rotation lock cylinder 53. It opposes the recessed part 62b between teeth. Similarly, the long teeth 62a of the upper dog clutch portion 62 are opposed to the concave portions 61b between the long teeth 61a of the lower dog clutch portion 61 and the first teeth from the long teeth 61a. Note that the axial dimensions of the long teeth 61a and 62a are shown in FIG. 9B even if the upper rotation lock cylinder 53 is moved upward in the axial direction relative to the upper outer cylinder portion 43. The size is set so as to abut against each other. Accordingly, the upper rotation lock cylinder 53 is prevented from rotating more than 80 degrees with respect to the lower rotation lock cylinder 52, that is, the handle arm 16 is prevented from rotating more than 80 degrees from the initial state posture.

  Subsequently, as shown in FIG. 9C, when the user stops pulling the operation pin 45 by hand, that is, when the operation pin 45 is released, the upper rotation lock cylinder 53 is moved to the upper coil. Due to the urging force of the spring 56, it moves downward in the axial direction with respect to the upper outer cylinder portion 43. Accordingly, the long teeth 61a of the lower dog clutch portion 61 are fitted into the recesses 62b of the upper dog clutch portion 62, and similarly, the long teeth 62a of the upper dog clutch portion 62 are fitted into the recesses 61b of the lower dog clutch portion 61. Therefore, the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are locked so as not to rotate. As a result, the upper outer cylinder portion 43 is locked so as not to rotate with respect to the lower outer cylinder portion 42, and the handle arm 16 is locked in the use state posture.

  Here, an example has been described in which the handle arm 16 is rotated by 40 degrees, and the posture is sequentially changed in the order of the initial state posture, the intermediate state posture, and the use state posture. It can also be rotated directly to the use state posture without going through the intermediate state posture.

  Next, an operation when the handle arm 16 returns to the initial state posture by the return function of the rotation mechanism unit 40 will be described.

  FIG. 10 is a first diagram for explaining the operation when the rotation mechanism in the embodiment of the present invention exhibits a return function, and FIG. 11 shows the case in which the rotation mechanism in the embodiment of the present invention exhibits a return function. It is a 2nd figure explaining operation | movement of. In FIG. 10, (a) is a view showing a state in which the child transport vehicle is folded, (b) is a view showing a state in which the child transport vehicle is expanded, and (c) is a state in which the child transport vehicle is expanded. It is a figure which shows the state by which the handle arm was rotated in the state by which it was carried out, In FIG. 11, (a) is the state by which the handle arm was locked by the intermediate | middle state attitude | position posture or the use state attitude | position in the state by which the child carrier vehicle was expand | deployed FIG. 5B is a diagram illustrating a state in which the child carrier is folded in a state where the handle arm is in an intermediate state or a use state posture, and FIG. 5C is a diagram illustrating a state in which the handle arm is returned to the initial state posture. is there.

  When the child carriage 1 is in the folded state, as shown in FIG. 10 (a), since the downward tension is not applied to the wire connecting pin 46 from the operating wire 41, the lower return The operating cylinder 51 is moved upward in the axial direction with respect to the lower outer cylinder portion 42 by the urging force of the lower coil spring 55, and the lower jaw clutch portion 63 is engaged with the upper jaw clutch portion 64. It has become. As a result, the lower return working cylinder 51 and the upper outer cylinder portion 43 are locked so as not to rotate. As a result, the upper outer cylinder portion 43 is locked so as not to rotate relative to the lower outer cylinder portion 42, and the handle arm 16 is locked. Is locked in the initial state posture.

  Since the inner sleeve 54 moves together with the lower return working cylinder 51 in the axial direction upward with respect to the lower outer cylinder portion 42, the operation pin 45 is pushed up by the upper end of the inner sleeve 54. As a result, the upper rotation lock cylinder 53 moves upward in the axial direction with respect to the upper outer cylinder portion 43 against the urging force of the upper coil spring 56, so that the lower dog clutch portion 61 and the upper dog clutch portion 61 are moved upward. The engagement with the clutch portion 62 is released, and the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are unlocked.

  Subsequently, when the user unfolds to use the child transport vehicle 1, as shown in FIG. 5B, the seventh joint 37 extends and the left and right bent link members 27 become substantially straight. Since the lower end of the working wire 41 is pulled downward, a downward tension is applied to the wire connecting pin 46 from the working wire 41 as shown in FIG. As a result, the lower return operating cylinder 51 moves downward in the axial direction with respect to the lower outer cylinder part 42 against the urging force of the lower coil spring 55, and the lower jaw clutch part 63 and The meshing with the upper jaw clutch part 64 is released.

  Further, since the inner sleeve 54 moves together with the lower return working cylinder 51 in the axial direction downward with respect to the lower outer cylinder part 42, the operation pin 45 is pushed up by the upper end of the lower outer cylinder part 42. Freed from state. As a result, the upper rotation lock cylinder 53 moves downward in the axial direction with respect to the upper outer cylinder portion 43 by the urging force of the upper coil spring 56. As a result, the lower dog clutch portion 61 and the upper dog clutch portion 62 are engaged with each other, so that the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are locked. Therefore, the state where the upper outer cylinder portion 43 is locked so as not to rotate with respect to the lower outer cylinder portion 42 continues, and the state where the handle arm 16 is locked in the initial state posture is also continued.

  Subsequently, as shown in FIG. 10C, the user rotates the handle arm 16 while pulling the operation pin 45 up by hand. In the example shown in FIG. 10C, the handle arm 16 is rotated by 80 degrees in order to directly change from the initial state posture to the use state posture. Thereby, the upper outer cylinder part 43 rotates 80 degrees. Further, the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 operate as shown in FIGS. 8 and 9, and the lower dog clutch portion 61 and the upper dog clutch portion 62 are engaged and released.

  In addition, the space | interval of the adjacent vertical parts 63b and 64b of the lower jaw clutch part 63 and the upper jaw clutch part 64, ie, the pitch of the vertical parts 63b and 64b, is formed so as to correspond to a rotation angle of 90 degrees. . Accordingly, when the upper outer cylinder portion 43 is rotated by 80 degrees, the position of the vertical portion 64b of the upper jaw clutch portion 64 with respect to the vertical portion 63b of the lower jaw clutch portion 63 is shifted by 10 degrees, and therefore, as shown in FIG. Further, a portion near the upper end of the inclined portion 63a of the lower jaw clutch portion 63 and a portion near the lower end of the inclined portion 64a of the upper jaw clutch portion 64 face each other.

  Subsequently, when the user stops pulling the operation pin 45 by hand as shown in FIG. 11A, that is, when the operation pin 45 is released, as shown in FIG. 9C. The upper rotation lock cylinder 53 is moved downward in the axial direction with respect to the upper outer cylinder portion 43 by the urging force of the upper coil spring 56, and the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are Locked to prevent rotation. As a result, the upper outer cylinder portion 43 is locked so as not to rotate with respect to the lower outer cylinder portion 42, and the handle arm 16 is locked in the use state posture. In the use state, as shown in FIG. 11A, the state in which the engagement of the lower jaw clutch portion 63 and the upper jaw clutch portion 64 is released continues.

  Subsequently, when the user performs a folding operation to store the child transport vehicle 1, as shown in FIG. 5C, the seventh joint 37 is bent, and the left and right bent link members 27 are the first. Since the state where the seven joints 37 are bent and the lower end of the working wire 41 is pulled downward is released, the wire connecting pin 46 is applied from the working wire 41 as shown in FIG. The applied downward tension is released. Accordingly, the lower return operating cylinder 51 moves upward in the axial direction with respect to the lower outer cylinder portion 42 by the urging force of the lower coil spring 55. Then, the vicinity of the upper end of the inclined portion 63 a of the lower jaw clutch portion 63 comes into contact with the vicinity of the lower end of the inclined portion 64 a of the upper jaw clutch portion 64.

  Since the inner sleeve 54 moves together with the lower return working cylinder 51 in the axial direction upward with respect to the lower outer cylinder portion 42, the operation pin 45 is pushed up by the upper end of the inner sleeve 54. As a result, the upper rotation lock cylinder 53 moves upward in the axial direction with respect to the upper outer cylinder portion 43 against the urging force of the upper coil spring 56, so that the lower dog clutch portion 61 and the upper dog clutch portion 61 are moved upward. The engagement with the clutch portion 62 is released, and the lower rotation lock cylinder 52 and the upper rotation lock cylinder 53 are unlocked.

  Further, a downward force is applied from the lower jaw clutch portion 63 in a state in which a portion near the upper end of the inclined portion 63a of the lower jaw clutch portion 63 and a portion near the lower end of the inclined portion 64a of the upper jaw clutch portion 64 are in contact with each other. Since the inclined portion 64a of the upper jaw clutch portion 64 is displaced along the inclined portion 63a of the lower jaw clutch portion 63, the upper outer cylinder portion 43 including the upper jaw clutch portion 64 is rotated. A rotational moment is generated.

  Then, when the upward movement of the lower return operation cylinder 51 and the inner sleeve 54 is finished, as shown in FIG. 11C, the upper outer cylinder portion 43 rotates and the handle arm 16 is in the initial state posture. The lower jaw clutch portion 63 is engaged with the upper jaw clutch portion 64, and the upper outer cylinder portion 43 is moved relative to the lower outer cylinder portion 42 in the same manner as in the example shown in FIG. The handle arm 16 is locked in the initial state posture while being locked so as not to rotate.

  Here, an example has been described in which the handle arm 16 that is operated by the user to be in the use state posture is automatically returned to the initial state posture and locked in accordance with the operation of folding the child transport vehicle 1. However, the handle arm 16 operated by the user to the intermediate state posture is similarly automatically returned to the initial state posture and locked in accordance with the operation of folding the child transport vehicle 1.

  Thus, in the present embodiment, the child transport vehicle 1 includes a pair of main column members 21 and a pair of front leg members 22 having upper ends connected to the pair of main column members 21 and front wheels 12 attached to the lower ends. And a pair of rear leg members 23 whose upper ends are connected to a pair of main column members 21 and rear wheels 13 are attached to the lower ends, and the pair of main column members 21 and the pair of rear leg members 23 are X-shaped. An upper and lower X-link member 26 that connects the pair of main column members 21 and the pair of rear leg members 23 from a wide deployed state to a narrow folded state, a pair of front leg members 22, and a pair of rear leg members 23. Posture control is performed on the upper ends of the pair of main pillar members 21 and the front and rear X link members 24 that are connected in an X shape and change the pair of front leg members 22 and the pair of rear leg members 23 from the wide deployed state to the narrow folded state. It is attached via a rotating mechanism 40 as a part, And a handle arm 16 as a pair of manual operation units capable of changing the posture from the initial state posture to another posture, and the rotation mechanism portion 40 includes a pair of main pillar members of the upper and lower X link members 26 and the front and rear X link members 24. 21. In conjunction with the operation of bringing the pair of front leg members 22 and the pair of rear leg members 23 into the folded state, the posture of the pair of handle arms 16 is returned to the initial state posture.

  Thereby, when storing the children's transport vehicle 1, it can be folded by a simple operation, and the operation is easy and the usability is improved.

  The pair of handle arms 16 are separated from each other in the initial state posture, and when the pair of main pillar members 21, the pair of front leg members 22, and the pair of rear leg members 23 are in the deployed state, The posture can be changed to a use state posture which is integrated in a pseudo manner. Thereby, even if the user operates the handle arm 16 with one hand, the user can easily run the child transport vehicle 1 straight.

  Further, when the pair of main pillar members 21, the pair of front leg members 22, and the pair of rear leg members 23 are in the folded state, the rotation mechanism unit 40 locks the posture of the pair of handle arms 16 from the initial state posture. The posture cannot be changed. Accordingly, it is possible to reliably prevent the posture of the handle arm 16 from changing when the child transport vehicle 1 is stored.

  Furthermore, the rotation mechanism unit 40 includes an operation pin 45, and when the pair of main pillar members 21, the pair of front leg members 22 and the pair of rear leg members 23 are in the unfolded state, the operation pin 45 is operated. The pair of handle arms 16 can be changed in posture, and if the operation pin 45 is not operated, the posture of the pair of handle arms 16 is locked so that the posture cannot be changed. Thus, when using the child transport vehicle 1, the user can change the posture of the handle arm 16 by operating the operation pin 45 at any time, and if the operation pin 45 is not operated, the handle arm Since the posture of 16 is locked, the child carrier 1 can be driven while stably holding the handle arm 16.

  Furthermore, the child transport vehicle 1 further includes a kick bar 15 attached to the front / rear X-link member 24 and extending rearward. When the kick bar 15 is stepped down while the handle arm 16 is held, The main column member 21, the pair of front leg members 22 and the pair of rear leg members 23 are folded, the front leg member 22 is bent with respect to the main column member 21, and the front wheel 12 is lifted to handle. Approach the arm 16. As a result, the user can hold the handle arm 16 with one hand and fold the child carriage 1 in a used state without taking a forward bending posture with a simple operation of simply stepping on the kick bar 15 with one foot. It is possible to assume a standing posture in a folded state.

  Furthermore, when the operation of bringing the pair of main pillar members 21, the pair of front leg members 22 and the pair of rear leg members 23 into the folded state is completed, the child carriage 1 is supported by the rear wheel 13 and the kick bar 15. Maintain a standing posture and become independent. Accordingly, the user can easily store the child transport vehicle 1 in a standing posture.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

  The present invention can be applied to a child transporter.

DESCRIPTION OF SYMBOLS 1 Child carriage 12 Front wheel 13 Rear wheel 15 Kick bar 16 Handle arm 16a Tip part 21 Main pillar member 22 Front leg member 23 Rear leg member 24 Front and rear X link member 26 Vertical X link member 40 Rotation mechanism part 45 Operation pin

Claims (7)

A foldable children carrier,
A pair of main pillar members;
A pair of front leg members having upper ends connected to the pair of main pillar members and front wheels attached to the lower ends;
A pair of rear leg members having upper ends connected to the pair of main pillar members and rear wheels attached to the lower ends;
The pair of main pillar members and the pair of rear leg members are connected in an X shape, and the pair of main pillar members and the pair of rear leg members are changed from a wide deployed state to a narrow folded state. A link member;
The front and rear X link members that connect the pair of front leg members and the pair of rear leg members in an X shape to change the pair of front leg members and the pair of rear leg members from a wide deployed state to a narrow folded state When,
A pair of manual operation units attached to the upper ends of the pair of main pillar members via a posture control unit and capable of changing the posture from the initial state posture to another posture;
The posture control unit is configured to link the pair of main pillar members, the pair of front leg members, and the pair of rear leg members of the upper and lower X link members and the front and rear X link members in a folded state. A child carriage characterized by returning the posture of the manual operation unit to the initial state posture.   The pair of manual operation portions are separated from each other in the initial state posture, and are simulated when the pair of main pillar members, the pair of front leg members, and the pair of rear leg members are in a deployed state. The child carriage according to claim 1, wherein the posture can be changed to a use state posture integrated integrally. The manual operation unit is a rod-like handle arm curved in a substantially L shape,
The posture control unit changes the rotation angle of the lower end of the handle arm with respect to the upper end of the main pillar member, and the tip end of the handle arm faces forward in the initial state posture, and the tip of the pair of handle arms in the use state posture The child carriage according to claim 2, wherein the posture of the handle arm is changed so that the parts correspond to each other.   When the pair of main pillar members, the pair of front leg members, and the pair of rear leg members are in a folded state, the posture control unit locks the posture of the pair of manual operation units and takes the posture from the initial state posture. The children's transport vehicle according to any one of claims 1 to 3, wherein the child vehicle is not changeable.   The posture control unit includes an operation member, and when the pair of main pillar members, the pair of front leg members, and the pair of rear leg members are in an unfolded state, the pair of main pillar members, if the operation members are operated, 5. The posture of the manual operation unit can be changed, and if the operation member is not operated, the posture of the pair of manual operation units is locked so that the posture cannot be changed. Child carrier. A stepping operation unit attached to the front and rear X-link members and extending backward;
When the stepping operation unit is stepped down while the manual operation unit is held, an operation of folding the pair of main pillar members, the pair of front leg members, and the pair of rear leg members is performed, The child transport vehicle according to any one of claims 1 to 5, wherein the front leg member is bent with respect to the main pillar member, and the front wheel is lifted to approach the manual operation unit.   When the operation of bringing the pair of main pillar members, the pair of front leg members, and the pair of rear leg members into a folded state is completed, the rear wheel and the stepping operation unit support, thereby maintaining an upright posture. The child transport vehicle according to claim 6, which is self-supporting.

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