TWI649226B - Baby carriage - Google Patents

Abstract

An object of the present invention is to provide a stroller in which a state maintaining member is provided in a stroller body, and is movable between a position where the folding operation is restricted and a position at which the folding operation can be performed. An operating member is movably provided on the handle. A switching member is provided in an actionable manner on the body frame. The action of the switching member will be communicated to the wheel holding unit. The operating member can be moved by pressing the state maintaining member by operating the handle, and can be operated by pressing the switching member with the shaking of the handle.

Description

Baby carriage Field of invention

The present invention relates to a stroller that is foldable and whose handle is rockable between a forwardly inclined position and a rearwardly inclined position.

Background of the invention

Heretofore, there has been known a stroller in which the handle can be tilted from the side toward the first position (back push position) which is inclined further rearward than the vertical axis, and the second position which is inclined forward toward the more vertical axis (facing the push position) ) Strolling between the strollers. In consideration of the operability of the stroller, it is preferable to use a wheel holding unit as a so-called caster on either of the front leg and the rear leg, which has a rotating body that can hold the wheel in a rotatable manner. a fixed body that is rotatably fixed about an axis that is non-parallel to the axis of rotation of the wheel; and a rotating body that is mounted on the wheel holding unit of the foot on the side of the front side in the traveling direction The rotation of the rotating body mounted on the foot on the side after the traveling direction with respect to the fixed body is restricted with respect to the rotation of the fixed body. Next, the stroller disclosed in JP 2008-254693 A is provided with a switching mechanism that automatically cuts between the rotation and the non-rotatable state of the rotating body with respect to the fixed body depending on the position of the handle. change.

In the stroller disclosed in JP 2008-254693 A, the switching mechanism includes a sliding member which is a sliding member that is slidably disposed on the rear leg and a switching member that is provided to the handle. In the stroller disclosed in JP 2008-254693 A, the turning motion of the switching member caused by the shaking of the handle is converted into the sliding motion of the sliding member. By transmitting the sliding motion of the sliding member to the wheel holding unit, the rotating body of the wheel holding unit can be automatically switched between the state in which it can rotate relative to the solid body and the non-rotatable state with the shaking of the handle.

Although such a switching mechanism is very useful, due to its complicated structure, the size of the stroller is increased, and as a result, the weight of the stroller is increased.

In addition, recent strollers are usually constructed in a foldable manner. In a foldable stroller, generally, a mechanism for maintaining the stroller in an unfolded state is disposed at the handle and its vicinity. That is, the mechanism for maintaining the stroller in the deployed state is disposed at the same position as the member constituting the switching mechanism. Therefore, it is difficult to secure the installation space of the members constituting the switching mechanism. Moreover, there is also a limit to the degree of freedom in designing the switching mechanism.

Summary of invention

The present invention has been made in consideration of the above points, and an object thereof is to reduce the size and weight of a mechanism for switching a state of a wheel holding unit according to a handle in a stroller in which a handle can be swung and the stroller body can be folded. The mechanism that shakes to automatically switch the state of the wheel holding unit.

The stroller of the present invention has: a foldable stroller body having: a body frame having a front foot and a rear leg; and a handle connected to the body frame in a rockable manner; and a wheel holding unit disposed on the front foot And a wheel holding unit on the foot of at least one of the aforementioned rear legs, comprising: a wheel; a rotating body rotatably supporting the wheel; the fixing body being mounted on at least one of the legs, and The rotating body is supported in such a manner that the rotating body is rotatable about an axis non-parallel to the rotation axis of the aforementioned wheel; and the locking member is movable between a non-rotating position and a rotating position, the non-rotating position limiting the rotating body The rotation position is a position at which the rotating body is rotatable relative to the fixed body; and the folding operation of the baby carriage body is restricted, and the folding operation of the baby carriage body may be a state maintaining member that moves between the released positions is disposed on the body frame; The operating member for operating the handle is disposed on the handle; the switching mechanism is configured to move the locking member according to the shaking of the handle relative to the body frame; the switching mechanism includes: a switching member in an operable manner Provided on the body frame; and a means for transmitting the operation of the switching member to the locking member; the operating member, By operating the handle, the state maintaining member can be pressed and moved, and the switching member can be pressed to operate in response to the shaking of the handle.

In the stroller of the present invention, the body frame has: an armrest rotatably coupled to the front leg and the rear leg; and a first link rotatably coupled to the armrest; the state maintaining member The first link may be supported, and the switching member may be supported on the rear leg.

In the stroller of the present invention, the body frame further includes: a second link rotatably coupled to the front leg; and a third link rotatably coupled to the rear leg; the second link The link is also rotatably connected to at least one of the first link and the third link; and the third link is rotatably connected to the first link and the second link At least one of them.

In the stroller of the present invention, the operation member is movable along a longitudinal direction of a portion of the handle in which the operation member is provided, between an operation position and a non-operation position located below the operation position; and The direction of the operation position side to the aforementioned non-operation position is given a potential energy; The operation member may also abut the switching member from below to operate the switching member in accordance with the shaking of the handle.

In the stroller of the present invention, the operating member is movable between an operating position and a non-operating position located below the aforementioned operating position along a longitudinal direction of a portion of the handle in which the operating member is disposed; and from the foregoing The operation position side is given a potential energy in a direction toward the non-operation position; and the state maintaining member may be pressed by the operation member that moves from the non-operation position to the operation position, and the release position is from the restriction position to the release position. mobile.

In the stroller of the present invention, the handle is swingable between a first position in which the operation member is engageable with the state maintaining member, and a second position in which the operation member is a position at which the switching member is engaged; when the handle is located at the first position, the operation member may be in a state of being away from the switching member.

In the stroller of the present invention, the handle is swingable between a first position in which the operation member is engageable with the state maintaining member, and a second position in which the operation member is a position in which the switching member is engaged; the operating member is movable along a longitudinal direction of a portion of the handle in which the operating member is disposed, between an operating position and a non-operating position located below the operating position; and is from the foregoing The operation position side is given a potential energy in a direction toward the aforementioned non-operation position; The operation member may be provided with a contact surface; the contact surface may contact the state maintaining member from below when the handle is located at the first position, and may contact the switching member from below when the handle is located at the second position. .

In the stroller of the present invention, the operation member may be provided with an operation base that is slidable relative to the handle; and the operation protrusion is a longitudinal direction of a portion of the handle that is provided with the operation base The direction of the intersection is prominent and contains the aforementioned contact faces.

In the stroller of the present invention, the contact surface may be curved when viewed from a direction parallel to the rocking axis of the handle.

In the stroller of the present invention, the contact surface may include a surface from which the handle member is rocked from the first position to the second position when viewed from a direction parallel to a rocking axis of the handle. In the moving path, the distance from the front side to the rear side is gradually longer than the distance from the rocking axis.

In the stroller of the present invention, when the handle is disposed at the first position, the operation member may be in a state in which the distance from the rocking axis becomes the longest in the contact surface, and the state is accessible. Maintain the components.

In the stroller of the present invention, the portion of the contact surface that will contact the state position member may be set to be provided with the aforementioned operating member from the handle in a direction parallel to the rocking axis of the handle. The long side of the part is straight.

In the stroller of the present invention, The switching member has a switching base that is slidable relative to the rear leg, and a switching protrusion that protrudes in a direction intersecting with a longitudinal direction of a portion of the rear leg in which the switching base is provided; the switching protrusion includes a lower portion When the contact surface is viewed from a direction parallel to the rocking axis of the handle, the movement direction of the operation member in which the handle is swung from the first position to the second position is from the front side to the rear side. The receiving surface of the rocking axis is gradually increased in length; the operating member may be configured to contact the receiving surface of the switching member with the swing of the handle to the second position.

According to the present invention, in the stroller in which the handle can be swung and the stroller body can be folded, the switching mechanism for automatically switching the state of the wheel holding unit according to the shaking of the handle is reduced in size and weight.

10‧‧‧ baby carriage

11‧‧‧ Baby stroller body

12‧‧‧ Ontology framework

14‧‧‧ Front foot

15‧‧‧ Front link

16‧‧‧ hind feet

16a‧‧‧Induction of long holes

17‧‧‧ Rear Link

19‧‧‧Handrail

20‧‧‧1st link

21‧‧‧Main connecting rod

22‧‧‧Upper connection

25‧‧‧2nd link

26‧‧‧Frame materials

26a‧‧‧ side

26b‧‧‧Connecting Department

27‧‧‧ Front connector

28‧‧‧After connecting material

29‧‧‧Central Link

30‧‧‧3rd link

31‧‧‧ Spindle

32‧‧‧End members

33‧‧‧Restricting the engagement recess

34‧‧‧Axis components

35‧‧‧1st position holding member

36‧‧‧2nd position holding member

38‧‧‧Protection components

41‧‧‧Base frame

42‧‧‧Top frame

43‧‧‧ Linked Framework

50‧‧‧Hands

50a‧‧‧Axis

50b‧‧‧Intermediate

51‧‧‧ Holding the engaging members

52‧‧‧ Remote operating device

55‧‧‧Operating components

56‧‧‧Operation base

57‧‧‧Operational highlights

58‧‧‧Contact surface

58a‧‧‧ top

59‧‧‧Mechanical components

60‧‧‧State Maintenance Component

61‧‧‧ Body Department

62‧‧‧Restricting the engagement protrusion

63‧‧‧Accept board

65‧‧‧Switching components

65a‧‧‧Switching shaft member

66‧‧‧Switch base

67‧‧‧Switching the protrusion

68‧‧‧Contact surface

69‧‧‧Mechanical components

70‧‧‧ wheel holding unit

71‧‧‧ fixed body

72‧‧‧ caster shaft components

74‧‧‧Rotating body

75‧‧‧Receive recess

77‧‧‧ axle

78‧‧‧ Wheels

79‧‧‧Locking components

85‧‧‧ means of communication

100‧‧‧Switching mechanism

As‧‧‧Shake axis

Da, db‧‧‧ distance from the shaking axis As

Tr‧‧‧moving path

Fig. 1 is a perspective view for explaining an overall configuration of a stroller according to an embodiment of the present invention.

Fig. 2 is a side view showing the stroller in a state where the handle is placed at the second position (facing the push position).

Fig. 3 is a side view showing the stroller in a folded state.

Fig. 4 is a partial side elevational view showing an important part of the stroller.

Figure 5 is a partial perspective view of an important part of the stroller.

Figure 6 is a partial perspective view of an important part of the stroller.

Figure 7 is a partial perspective view of an important part of the stroller.

Fig. 8 is a side view showing the wheel holding unit in a state in which one side of the wheel has been removed.

Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 to 9 are views for explaining an embodiment of a stroller according to the present invention. In addition, in FIG. 1 - FIG. 3, the whole structure of a stroller is shown. As shown in FIGS. 1 to 3, the stroller 10 of the present embodiment has a foldable stroller body 11 having legs 14 and 16 and a wheel holding unit 70 to which the legs 14 and 16 are attached. The stroller body 11 has a body frame 12 having a front leg 14 and a rear leg 16 and a handle 50 coupled to the body frame 12 in a manner oscillatable relative to the body frame 12. Although the illustration is omitted, the cushion body material is detachably attached to the stroller body 11. Infants and young children are sitting on the material of the seat.

In the present embodiment, the stroller 10 is of a type that has been widely spread (for example, JP2006-117012A), and is configured to be foldable. Further, in the stroller 10 of the present embodiment, by swinging the handle 50 with respect to the main body frame 12, both of the following can be achieved: the operator (guardian) can hold the handle 50 from the back side of the infant to manipulate the baby The stroller 10 advances the stroller 10 in such a manner that the infant faces the front of the traveling direction; and the operator can grip the stroller 10 by holding the handle 50 from the position on the side of the foot before the face of the infant, so that the stroller 10 is behind The stroller 10 advances in the forward direction of the foot.

Here, in the present specification, the terms "front", "back", "upper", "lower", "front and rear direction", and "up and down direction" of the stroller and its constituent elements are not specifically indicated. It means "front", "back", "upper", "down", "front and rear direction" and "up and down direction" based on infants and toddlers who are riding in the unfolded state. More specifically, the "front-rear direction" refers to the direction in which the lower left side and the upper right side of the paper surface are connected in FIG. 1, and the direction corresponding to the left and right sides of the paper surface in FIG. Then, as long as there is no special instruction, the term "front" refers to the side of the infant who has been riding the vehicle; in Fig. 1, the lower left side of the paper surface is the front side, and the left side of the paper surface in Fig. 2 is the front side. On the other hand, the "up-and-down direction" means a direction orthogonal to the front-rear direction and orthogonal to the ground plane. Therefore, when the ground plane is a horizontal plane, the "up and down direction" means the vertical direction. In addition, the "lateral direction" means a width direction, that is, a direction orthogonal to either the "front-rear direction" and the "up-and-down direction".

First, the stroller body 11 will be described as an overall structure of the stroller. As shown in Fig. 1, the stroller 10 of the present embodiment has a structure that is substantially symmetrical about the center plane in the lateral direction of the front-rear direction. As described above, the stroller body 11 has the body frame 12 and the handle 50. As shown in FIG. 1, the main body frame 12 has a pair of front legs 14 disposed on the left and right sides, a rear leg 16 disposed on each of the left and right pairs, and an armrest 19 disposed on each of the right and left sides, and a pair of left and right pairs. The first link 20 is.

As shown in FIGS. 1 and 2, the upper end portion of the front leg 14 is coupled to the front portion of the armrest 19 disposed on the corresponding side (left side or right side) in a rotatable (shakeable) manner. Similarly, the upper end portion of the rear leg 16 is connected to the armrest 19 disposed on the corresponding side (left or right side) in a rotatable (shakeable) manner. The front part. Further, the upper portion of the first link 20 is connected to the rear portion of the armrest 19 disposed on the corresponding side (left side or right side) in a rotatable (shakeable) manner. As shown in FIG. 2, in the example shown in the figure, the first link 20 has a main link member 21 and an upper connecting member 22 fixed to the upper end of the main link member 21. The main link member 21 is composed of, for example, a metal pipe. The upper connecting material 22 is made of, for example, a resin molded product. The first link 20 is attached to the rear end portion of the armrest 19 in a rotatable (shakeable) manner at the upper connecting member 22.

As shown in FIGS. 1 and 2, the body frame 12 has a second link 25 connected to the front leg 14 in a rotatable (shakeable) manner; and the third link 30 is rotatable (shakeable) The way is connected to the rear foot 16. The second link 25 is connected to at least one of the first link 20 and the third link 30 in a rotatable (shakeable) manner. The third link 30 is connected to at least one of the first link 20 and the second link 25 so as to be rotatable (shakeable).

As shown in FIG. 1, in the illustrated example, a frame member 26 is provided as a member constituting the second link 25, and a connecting member 27 and a rear connecting member 28 are fixed before the frame member 26. The frame material 26 is composed of, for example, a bent metal tube. The front connecting material 27 and the rear connecting material 28 are made of, for example, a resin molded product. The frame member 26 has a pair of side portions 26a extending in the front-rear direction, and a U-shaped portion is formed in a joint portion 26b that connects the pair of side portions 26a in front. The front connecting member 27 is a front portion in which one end portion is rotatably coupled to the front leg 14 and the other end portion is fixed to the side portion 26a. The rear connecting material 28 is fixed to the rear end portion of the side portion 26a. In this example, the second link 25 on the right side is stroked by the side portion 26a of the frame member 26 on the right side and the front connecting member 27 and the rear connecting member 28 fixed to the right side of the side portion 26a on the right side. Similarly, borrow The second link 25 on the left side is formed by the side portion 26a of the frame member 26 on the left side and the front connecting member 27 and the rear connecting member 28 fixed to the left side of the side portion 26a on the left side.

As shown in Fig. 1, in the example shown in the figure, the third link 30 has a main shaft member 31 which is rotatably coupled to the rear leg 16, and the end member 32 is fixed to the upper end portion of the main shaft member 31. The main shaft member 31 is composed of, for example, a metal pipe. The end member 32 is composed of, for example, a resin molded article. The main shaft member 31 is rotatably coupled to the rear leg 16 at the lower end portion. The end member 32 is connected to the first link 20 and the second link 25.

As shown in FIG. 4 and FIG. 5, in the example shown in the figure, the first link 20, the second link 25, and the third link 30 are connected to each other by the same shaft member 34. . The shaft member 34 penetrates the main link member 21 of the first link 20, the end member 32 of the third link 30, and the rear connecting member 28 that forms the second link 25. With this configuration, the first link 20, the second link 25, and the third link 30 are formed to be rotatable about each other around the same axis formed by the shaft member 34.

Moreover, in the example shown in the figure, as shown in FIGS. 1 and 2, the main body frame 12 further includes a base frame 41 and an upper frame 42, and a connection frame 43 that connects the base frame 41 and the upper frame 42. A base fabric (not shown) is stretched over the frame member 26 and the base frame 41. The base fabric holds the frame member 26, the base frame 41, the upper frame 42 and the connecting frame 43, and a cushioning seat material (not shown). The base frame 41 and the upper frame 42 are collectively formed in a U shape. The base frame 41 is penetrated by the shaft member 34 at both end portions thereof. Next, the base frame 41 is rotatable (shakeable) with respect to the frame member 26 and other constituent elements. Above The frame 42 is connected at its both ends to the rear end portion of the armrest 19 in a rotatable (shakeable) manner. The axis of rotation of the upper frame 42 with respect to the armrest 19 is on the same line as the axis of rotation of the first link 20 to the armrest 19. Between the base frame 41 and the upper frame 42, a coupling frame 43 that is pulled apart in the lateral direction is provided. The joint frame 43 is rotatably connected to the base frame 41 and the upper frame 42 at both ends thereof.

As shown in FIG. 1 , the main body frame 12 has the following components as a component extending in the lateral direction: a front connecting member 15 connecting the pair of front legs 14 and a rear connecting member 17 connecting the pair of rear legs 16 . The front connecting material 15 can function as a footrest. Further, a center connecting material 29 is provided between the pair of rear connecting members 28. The front connecting member 15, the rear connecting member 17, and the center connecting member 29 can suppress the deformation of the stroller 10 in the lateral direction. Further, a flexible protective member 38 is detachably provided between the pair of armrests 19.

With respect to the main body frame 12 composed of the above structure, the handle 50 is coupled in a swingable manner. As shown in Fig. 1, in the present embodiment, the handle 50 includes a shaft portion 50a that extends in a direction slightly parallel to each other, and an intermediate portion 50b that connects between the pair of shaft portions 50a. The handle 50 has a substantially U-shaped shape as a whole. The handle 50 is connected to the body frame 12 in a rotatable (shakeable) manner at both ends of the U-shape. As shown in FIG. 5, the handle 50 is rotatably coupled to the body frame 12 using a shaft member 34. Therefore, the first link 20, the second link 25, the third link 30, the base frame 41, and the handle 50 are formed to be rotatable with each other around the same axis formed by the shaft member 34.

In the stroller body 11, the handle 50 is formed to be swingable between a first position (back push position) and a second position (facing push position); the first position is rearward of the vertical axis in side view The inclined position, and the second position is a position that is inclined further forward than the vertical axis. In FIG. 1, the handle 50 is disposed at the first position. In FIG. 2, the handle 50 is disposed at the second position. A holding member 51 is provided on the shaft portion 50a of the handle 50. The holding engagement member 51 is slidable relative to the shaft portion 50a along the longitudinal direction of the shaft portion 50a. On the other hand, the main body frame 12 is provided with a first position holding member 35 (see FIG. 2) and a second position holding member 36 (see FIG. 1) engageable with the holding meshing member 51. By the engagement of the holding engagement member 51 with the first position holding member 35, the handle 50 is held at the first position as shown in FIG. By engaging the holding member 51 with the second position holding member 36, the handle 50 is held at the second position as shown in FIG.

Next, the wheel holding unit 70 attached to the legs 14 and 16 of the stroller body 11 will be described. In the present embodiment, all of the wheel holding units 70 mounted on the front leg 14 and the rear leg 16 are configured as so-called casters. As shown in FIGS. 8 and 9, each wheel holding unit 70 has a fixed body 71 that is fixed to the corresponding legs 14, 16; the rotating body 74 is held by the fixed body 71; and the wheel 78 is interposed The axle 77 is rotatably held on the rotating body 74. The wheel 78 is rotated about a rotation axis Ar which can be constituted by the axle 77.

Further, as shown in FIG. 1, a pair of wheels 78 are provided on both sides of the fixed body 71 and the rotating body 74, respectively. However, in Fig. 8, the illustration of the wheel 78 on one side is omitted.

As shown in FIG. 8, the fixed body 71 has an up and down direction, down The caster shaft member 72 extends. The rotating body 74 has a through hole (not shown) through which the caster shaft member 72 passes. As a result, the rotating body 74 is rotated about the fixed body 71 centering on the caster axis Ac constituted by the caster shaft member 72. The caster axis Ac as the rotational axis of the rotating body 74 with respect to the fixed body 71 is non-parallel to the rotational axis Ar as the rotational axis of the wheel 78 with respect to the rotating body 74. Typically, the caster axis Ac is parallel to the up and down direction, and the axis of rotation Ar is parallel to the lateral direction.

As shown in FIG. 9, the wheel holding unit 70 further has a locking member 79 that restricts the relative rotation of the fixed body 71 and the rotating body 74. In the present embodiment, the lock member 79 is held by the fixed body 71. The locking member 79 is movable relative to the fixed body 71. The fixing body 71 is formed with a housing groove 73 which is elongated in the vertical direction and opened toward the rotating body 74. The lock member 79 is fitted into the accommodation groove 73, and relatively moves the fixed body 71 in the vertical direction. As a result, the locking member 79 is movable between a non-rotational position that restricts the rotation of the rotating body 74 to the fixed body 71, and a rotational position that is a position at which the rotating body 74 can rotate toward the fixed body 71. .

In Fig. 9, a lock member 79 disposed at a non-rotational position is shown. As shown in FIG. 9, when the lock member 79 is disposed at the non-rotational position, the lock member 79 will protrude downward from the fixed body 71. A receiving recess 75 for receiving a locking member 79 projecting from the fixed body 71 is provided on the rotating body 74. That is, in the case where the lock member 79 is located at the non-rotational position, the tip end of the lock member 79 is inserted into the receiving recess 75, and the relative rotation of the fixed body 71 and the rotary body 74 about the caster axis Ac is restricted. On the other hand, the locking member 79 is located In the rotational position, the entire locking member 79 is located inside the fixed body 71, and the fixed body 71 and the rotating body 74 are relatively rotatable about the caster axis Ac.

Furthermore, as shown in FIG. 9, the urging member 80 is accommodated in the accommodation groove 73 of the fixed body 71. The urging member 80 is constituted by, for example, a compression spring. The urging member 80 can bias the locking member 79 from the rotational position side toward the non-rotational position. Further, the lock member 79 is a lead wire 86 that is connected to a transmission means 85 to be described later. The relative position of the locking member 79 with respect to the fixed body 71 can be controlled by the means 85.

Furthermore, the wheel holding unit 70 attached to the pair of front legs 14 can be configured to be the same or symmetrical. Similarly, the wheel holding unit 70 attached to the pair of front legs 16 can be configured to be the same or symmetrical. Further, the wheel holding unit 70 to which the wheel holding unit 70 and the rear leg 16 of the front leg 14 are attached may be configured in the same manner only if the mounting portions of the legs are different. In FIGS. 8 and 9, a wheel holding unit 70 to which the front leg 14 is attached is shown as a representative.

In the stroller 10 having the above configuration, when the handle 50 is held at the first position (the state of FIG. 1), the operator (guardian) can come from the position on the foot side of the stroller 10 on the back side of the infant. The handle 50 is gripped so that the infant pushes the stroller 10 toward the front in the traveling direction. At this time, the front leg side of the stroller 10 is forward in the traveling direction. On the other hand, when the handle 50 is held at the second position, the operator can grip the handle 50 from the forefoot side position of the stroller 10 facing the infant, and push the stroller 10 forward. At this time, the rear leg side of the stroller 10 is forward in the traveling direction. In the stroller 10 of this type, the wheel holding unit 70 of the legs 14 and 16 attached to the front side in the traveling direction, the rotating body 74 is rotatable to the fixed body 71, and the foot is attached to the side after the traveling direction. The rotation of the mounted wheel holding unit 70 and the rotating body 74 to the fixed body 71 is preferably limited.

That is, when the handle 50 is held in the first position, the locking member 79 of the wheel holding unit 70 attached to the front leg 14 is preferably disposed in the rotational position, and the locking member 79 of the wheel holding unit 70 mounted to the rear leg 16 is preferably disposed Non-rotating position. Further, when the handle 50 is held in the second position, the locking member 79 of the wheel holding unit 70 to which the forefoot 14 is mounted is preferably disposed in the non-rotating position, and the locking member 79 of the wheel holding unit 70 mounted to the rear leg 16 is preferably configured. In the rotated position. Next, in the stroller 10 of the present embodiment, as will be described later, the switching mechanism 100 is provided to move the lock member 79 with the swing of the handle 50 with respect to the main body frame 12.

Next, the operation when the stroller 10 configured as described above is folded from the unfolded state will be described. The stroller 10 having the above configuration can be folded by relatively rotating the respective constituent members. Specifically, the handle 50 placed at the first position is pulled up once and then pressed downward, whereby the third link 30 can be rotated clockwise in FIG. 2 with respect to the rear leg 16. With this operation, the armrest 19 and the second link 25 will rotate the first link 20 in the clockwise direction in FIG. With such an operation, as the handle 50 and the forefoot 14 are arranged to be slightly parallel in the side view, the arrangement position of the handle 50 can be lowered. In the above state, as shown in FIG. 3, the stroller 10 can be folded. In the folded state of FIG. 3, the size can be miniaturized in the front-rear direction and the up-and-down direction of the stroller 10. On the other hand, when the stroller 10 is unfolded from the folded state, it is only necessary to follow the order reverse to the folding operation described above.

However, in the stroller 10 of the present embodiment, as shown in FIGS. 4 to 7, the state maintaining member 60 that restricts the operation of the stroller 10 from the unfolded state to the folded state is provided on the main body frame 12. The state maintaining member 60 is movable between a restricted position in which the folding operation of the stroller 10 is restricted, and a released position in which the folding operation of the stroller 10 can be performed. In the present embodiment, the state maintaining member 60 can be held by the main link member 21 of the first link 20. The movement of the state maintaining member 60 between the restriction position and the release position is to move in the longitudinal direction of the main link member 21.

As shown in FIG. 6, the state maintaining member 60 has a main body portion 61 attached to the main link member 21, and a restriction engaging projection 62 and a receiving plate 63 projecting from the main body portion 61. The engagement projection 62 is restricted from the main body portion 61 so as to protrude inward in the lateral direction. On the other hand, on the end member 32 of the third link 30, a restriction engagement recess 33 engageable with the restriction engagement projection 62 is formed. As shown in FIG. 5, when the state maintaining member 60 slides down the first link 20, the restriction engagement projection 62 of the state maintaining member 60 is housed in the restriction engagement recess 33 of the third link 30. In the state shown in FIG. 5, the first link 20 of the holding state maintaining member 60 is not rotatable relative to the third link 30 that meshes with the state maintaining member 60. Therefore, when the restriction engaging projection 62 of the state maintaining member 60 is engaged with the restriction engagement recess 33 of the third link 30, the stroller 10 will be maintained in the deployed state, and the stroller 10 cannot be folded. That is, the position of the state maintaining member 60 shown in FIG. 5 is the restricted position of the state maintaining member 60.

On the other hand, as shown in FIG. 6, when the state maintaining member 60 slides upward on the first link 20, the restriction of the engagement projection 62 from the third link 30 is restricted. The engagement recess 33 is pulled out. Next, when the engagement of the restriction engagement projection 62 and the restriction engagement recess 33 is released, the first link 20 and the third link 30 are relatively rotatable, and the stroller 10 can be folded. That is, the position of the state maintaining member 60 shown in FIG. 6 is the restricted position of the state maintaining member 60.

Further, the main body portion 61 of the state maintaining member 60 is preferably biased from the release position (see FIG. 6) to the restriction position (see FIG. 5) by an urging member (not shown). By using such a biasing force, the folding operation of the stroller 10 can be more reliably restricted as long as no positive external force is applied. That is, it is possible to effectively prevent the folding operation of the unintentional stroller 10 from starting due to an erroneous operation.

With the arrangement of the state maintaining member 60, the operating member 55 for the operating state maintaining member 60 is provided to the shaft portion 50a of the handle 50. The operation member 55 is movable between the inoperative position shown in FIG. 5 and the operation position shown in FIG. 6 along the longitudinal direction of the portion of the handle 50 in which the operation member 55 is provided. The operating member 55 is biased from the side of the operating position to the non-operating position by the biasing member 59 (see FIG. 5) housed in the shaft portion 50a of the handle 50. That is, when the external force is not applied, the operating member 55 can be made to be in a non-operating position below the lower operating position by the urging force from the urging member 59. For example, the operating member 55 can be coupled to the operating device 52 (see FIG. 1) provided in the intermediate portion 50b of the handle 50 by an operation communication device (not shown). Next, by operating the remote operating device 52, the operating member 55 can be moved from the operating position to the inoperative position.

As shown in FIG. 5, the operating member 55 has an operation base portion 56 held by the handle 50, and an operation protrusion portion 57 projecting from the operation base portion 56. Operating base The portion 56 is a shaft portion 50a that is attached to the handle 50. The operation base 56 is slidable relative to the shaft portion 50a along the longitudinal direction of the shaft portion 50a of the handle 50. Further, the operation protruding portion 57 extends from the operation base portion 56 in a direction orthogonal to the longitudinal direction of the portion 50a in which the operation base portion 56 is provided in the handle 50, more specifically, the inner side in the width direction. On the other hand, as shown in FIG. 6, the receiving plate 63 of the state maintaining member 60 extends from the main body portion 61 to the outer side in the width direction. Next, when the operation member 55 is moved from the non-operating position to the operation position, the operation protrusion 57 abuts against the receiving plate 63 of the state maintaining member 60 from below, and presses the state maintaining member 60 from the restriction position to the release position. That is, as shown in FIGS. 5 and 6, when the handle 50 is placed at the first position, the state maintaining member 60 can be moved from the restricted position to the released position by moving the operating member 55 from the non-operating position to the operating position. . Thereby, the folding operation of the stroller 10 described above can be performed.

Next, the switching mechanism 100 will be described. The switching mechanism 100 is a mechanism that moves the locking member 79 of the wheel holding unit 70 by the swing of the handle 50 against the body frame 12. As shown in FIGS. 5, 7, 8, and 9, the switching mechanism 100 includes a switching member 65 provided in the main body frame 12, and a transmission means 85 for transmitting the operation of the switching member 65 to the locking member. The switching member 65 is movable relative to the body frame 12. The switching member 65 is held by the rear leg 16. The switching member 65 is movable along the longitudinal direction of the portion of the rear leg 16 where the switching member 65 is provided between the first switching position shown in FIG. 5 and the second switching position shown in FIG.

On the other hand, the communication means 85 is provided between the switching member 65 and the locking member 79. As far as the specific structure is concerned, as shown in Figure 9, The means 85 has a lead 86 and a cylindrical member 87 through which the lead 86 is inserted. Lead wires 86 are attached to the locking member 79 and the switching member 65, respectively. One end of the conveying means 85 is fixed to the vicinity of the locking member 79, and the other end is fixed to the vicinity of the switching member 65. Therefore, when the switching member 65 moves between the first switching position and the second switching position, the lead wire 86 moves in the tubular member 87, and the locking member 79 moves between the rotational position and the non-rotational position.

In particular, in the illustrated example, the front foot side conveying means 85 is provided between the locking member 79 of the wheel holding unit 70 attached to the front leg 14, and the switching member 65, and the wheel holding unit attached to the rear leg 16 is provided. A transmission means 85 on the rear leg side is provided between the lock member 79 of the 70 and the switching member 65. As shown in FIG. 2, the front foot side transmission means 85 extends from the switching member 65 to the wheel holding unit 70 through the inside of the rear leg 16 and the forefoot 14. As shown in FIG. 2, the communication means 85 on the rear leg side extends from the switching member 65 to the wheel holding unit 70 through the rear leg 16. When the switching member 65 is located at the first switching position of FIG. 5, the locking member 79 attached to the front leg 14 is pulled up from the non-rotating position to the rotational position, and the locking member 79 attached to the rear leg 16 can be biased by the biasing member 80. The force is forced into the non-rotating position from the rotating position. On the other hand, when the switching member 65 is located at the second switching position of FIG. 7, the locking member 79 attached to the front leg 14 can be pushed into the non-rotating position from the rotational position by the urging force of the urging member 80, and is attached to The locking member 79 of the rear leg 16 will be pulled from the non-rotating position to the rotational position.

The switching member 65 of the switching mechanism 100 is disposed in either of the first switching position and the second switching position in accordance with the rocking position of the handle 50. Specifically, the operating member 55 to which the handle 50 is attached can be accompanied by the shaking of the handle 50 The switching member 65 is pushed and operated to move. As shown in FIG. 5, when the handle 50 is in the first position, the operating member 55 is pulled away from the switching member 65. However, the operation member 55 can abut against the switching member 65 from below with the handle 50 moving, and the switching member 65 can be operated. That is, as shown in FIG. 5, when the handle 50 is placed in the first position, the operation member 55 is pulled away from the switching member 65, and the switching member 65 is placed at the first switching position. On the other hand, when the handle 50 is placed at the second position, the handle 50 is brought into contact with the switching protrusion 67 of the switching member 65 from below, and the switching member 65 is placed at the second switching position.

Further, as shown in FIG. 5, the switching member 65 receives the biasing force from the side of the second switching position to the first switching position by the biasing member 69 provided in the rear leg 16. The urging force of the urging member 69 is larger than the urging force of the urging member 80 provided in the wheel holding unit 70. Therefore, in a state where the operating member 55 is not abutted, the switching member 65 is stabilized at the first switching position. Thereby, the position control of the switching member 65 can be stabilized in accordance with the rocking position of the handle 50.

As shown in FIG. 5, the switching member 65 has a switching base 66 that is held by the rear leg 16, and a switching protrusion 67 that protrudes from the switching base 66. The switching base portion 66 is attached to the rear leg 16 in such a manner as to be slidable relative to the rear leg 16 in the longitudinal direction of the rear leg 16. Further, the switching projection portion 67 extends in the longitudinal direction that is orthogonal to the portion in which the switching base portion 66 is provided in the rear leg 16, and more specifically, extends rearward from the switching base portion 66 in the front-rear direction. As shown in FIG. 7, when the handle 50 is moved from the first position to the second position, the operation protruding portion 57 of the operation member 55 abuts against the switching protrusion 67 of the switching member 65 from the lower side, and the switching member 65 is changed from the first position. The switching position is pressed to the second switching position.

In other words, the operation protrusion 57 of the operation member 55 has the contact surface 58 and is a surface that contacts the switching member 65 from below with the swing of the handle 50 from the first position to the second position. Conversely, the switching member 65 has a receiving surface 69 that becomes a surface that comes into contact with the contact surface 58 of the operating member 55. In FIG. 4, the contact surface 58 (dotted line) and the receiving surface 69 when viewed from a direction parallel to the rocking axis As of the handle 50 are shown.

As shown in FIG. 4, or as can be understood from FIG. 5, the contact surface 58 is formed in a curved shape. Therefore, with the swing of the handle 50, the switching member 65 can be smoothly and stably operated by the switching member 65 with respect to the rear leg 16. Thereby, the sway of the lock member 79 at the rotational position and the non-rotation position is surely operated by the shaking of the handle 50. Further, as shown in FIG. 4, the contact surface 58 includes a curved surface which is moved in accordance with the operation member 55 which is swung from the first position to the second position when viewed from a direction parallel to the rocking axis As of the handle 50. In the path tr, from the front side to the rear side, the distance da from the rocking axis As is gradually increased. Therefore, with the shaking of the handle 50, the switching member 65 can be made to smoothly move the rear leg 16 little by little. Thereby, the locking member 79 can be more reliably operated between the rotational position and the non-rotational position in accordance with the shaking of the body frame 12 of the handle 50.

Similarly, as shown in FIG. 4, the receiving surface 68 of the switching protrusion 67 includes a curved surface which is accompanied by the handle 50 from the first position to the second position when viewed from a direction parallel to the rocking axis As of the handle 50. In the movement path tr of the operation member 55 at the time of shaking, the distance db from the front side to the rear side is gradually increased from the front side of the rocking axis As. Therefore, with the shaking of the handle 50, the switching member 65 can smoothly operate the rear leg 16 little by little. Take this According to the rocking of the body frame 12 by the handle 50, the locking member 79 can be more reliably operated between the rotational position and the non-rotational position.

Further, as shown in FIG. 5, the trailing leg 16 is formed with an induced long hole 16a extending linearly in the longitudinal direction of the rear leg 16. A switching shaft member 65a is inserted into the induced long hole 16a. The switching shaft member 65a is movable in the longitudinal direction of the induced long hole 16a. The switching shaft member 65a is held by the switching base 66 of the switching member 65, and operates with the switching member 65 to the rear leg 16. The lead wire 86 of the above-described transmission means 85 may be connected to the switching shaft member 65a of the switching shaft member 65 or to the interlocking member that is fixed together with the switching shaft member 65a and moves together with the switching shaft member 65 in the rear leg 16 ( The figure is not shown).

However, as described above, when the handle 50 is at the first position, the operation member 55 can contact the state maintaining member 60 from below, and can move the state maintaining member 60 from the restriction position to the release position. In the present embodiment, when the handle 50 is placed at the first position, the operation member 55 is connected to the state maintaining member 60 at the top portion 58a of the contact surface 58 which is the longest distance da (see FIG. 5) from the handle rocking axis As (see FIG. 5). The receiving plate 63. Such a contact surface 58 can be designed to be reduced in size and can be downsized. In other words, the size of the operation member 55 can be reduced, and the stroller 10 can be simplified and reduced in weight.

Further, as shown in FIG. 4, the top portion 58a of the contact surface 58 is orthogonal to the longitudinal direction of the portion of the handle 50 in which the operating member 55 is provided when viewed from a direction parallel to the rocking axis As of the handle 50. The direction. In other words, the top portion 58a of the contact surface 58 is connected in parallel with the direction orthogonal to the longitudinal direction of the portion in which the operating member 55 is provided in the handle 50, or in the direction parallel to the rocking axis As. Straight direction. According to such an operation The member 55 ensures a stable contact state of the state maintaining member 60 and the operating member 55. Thereby, the state maintaining member 60 can be stably operated using the operating member 55 which is also used in the operation of the switching member 65. In particular, when the operation member 55 slides in the longitudinal direction of the handle 50 as in the present embodiment, the operation member 55 can be used to stably operate the state maintaining member 60.

According to the above-described embodiment, the operation member 55 can be moved by pressing the handle 50 to press the state maintaining member 60, and can be operated by pressing the switching member 65 with the swing of the handle 50. That is, according to the present embodiment, when the handle 50 is shaken, the switching member 65 can be automatically operated by the operation member 55 that moves with the swing of the handle 50. When the operation member 55 is operated, the handle 50 can be operated, and the state maintaining member 60 can be moved. That is, the operation member 55 can also function as a part of a mechanism for maintaining the unfolded state of the stroller 10. By using such an operation member 55, the number of parts of the stroller 10 can be reduced as compared with a member for operating the switching member 65 in addition to the operation member 55. Moreover, since the number of parts is reduced, the installation space of the parts can be sufficiently ensured. Further, the structure of the stroller 10 can be greatly simplified and miniaturized, and the weight of the stroller 10 can be reduced.

Further, according to the present embodiment, the operating member 55 is movable between the operating position and the non-operating position located below the lower operating position along the longitudinal direction of the portion of the handle 50 in which the operating member 55 is provided, and from the operating position The side is biased to the non-operating position. Further, the operation member 55 will abut against the switching member 65 from the lower side with the shaking of the handle 50, and the switching member 65 is moved. Work. That is, when the operating member 55 is biased toward the inoperative position at the lower side, the switching member 65 is pressed from below. Thereby, when the handle 50 is rocked to the second position, the operating member 55 located at the biased position presses the switching member 65 in a direction opposite to the biasing direction. Therefore, the operation member 55 which is maintained at the lower limit of the movable range can be brought into contact with the switching member 65 from below by the swing of the handle 50, and the switching member 65 can be moved upward. In this case, the stability of the switching member 65 can be achieved.

Further, according to the present embodiment, the operating member 55 is movable between the operating position and the non-operating position located below the lower operating position, along the longitudinal direction of the portion of the handle 50 in which the operating member 55 is provided, and is subjected to the slave operating position. Apply force to the side of the non-operating position. Further, the state maintaining member 60 is pressed by the operating member 55 that moves from the operating position to the non-operating position, and moves from the restricted position to the released position. That is, the operating member 55 receives the biasing force to the lower non-operating position, and presses the state maintaining member 60 from below. Thereby, when the handle 50 is placed at the first position, the state maintaining member 60 is operated by the operation member 55 that is operated to the operating position against the biasing force. Therefore, it is possible to effectively prevent the state maintaining member 60 from unintentionally acting. Thereby, the stroller 10 can be stably maintained in the deployed state.

Further, according to the present embodiment, the handle 50 is swingable between a first position in which the operation member can be engaged with the state maintaining member 60, and a second position which is the operation member 55 and the switching member 65 meshing position. Further, when the handle 50 is at the first position, the operating member 55 is pulled away from the switching member 65. Therefore, in a state where the handle 50 is disposed at the first position, when the stroller 10 is deployed from the folded state, the switching member 65 and the operation are performed. A gap will be formed between the members 55. Therefore, when the stroller is deployed, it is possible to effectively prevent the clothes or the like from being caught between the switching member 65 and the operating member 55.

Further, according to the present embodiment, the operation member 55 has the operation base portion 56 which is slidable relative to the handle 50, and the operation protrusion portion 57 which is the direction in which the longitudinal direction of the portion of the handle 50 in which the operation base portion 56 is provided intersects. The (width direction) is protruded and includes the contact surface 58. Therefore, the contact of the operating member 55 with the switching member 65 can be stably ensured accompanying the shaking of the handle 50.

Further, the above-described embodiments are susceptible to various modifications within the scope of the gist of the invention. An example of the change will be described below.

In the above-described embodiment, the lock member 79 of the wheel holding unit 70 attached to both the front leg 14 and the rear leg 16 is exemplified by the switching mechanism 100, and is automatically operated in accordance with the rocking position of the handle 50, but is not limited thereto. this. It is also possible to provide that only the locking member 79 of the wheel holding unit 70 attached to one of the feet is automatically operated by the switching mechanism 100 in accordance with the rocking position of the handle. At this time, the wheel holding unit mounted on the other leg may not be configured as a caster type.

Further, the overall configuration of the stroller 10 and the stroller body 11 described in the above embodiments is merely an example.

Further, the configuration of the wheel holding unit 70 described in the above embodiment is merely an example. For example, the structure of the caster disclosed in Japanese Laid-Open Patent Publication No. 2008-254693 can also be used.

Further, although a few modifications have been described in the above embodiments, it is needless to say that a plurality of modifications may be combined as appropriate.

Claims (12)

A stroller comprising: a foldable stroller body having: a body frame having a front foot and a rear leg; and a handle connected to the body frame in a rockable manner; and a wheel holding unit disposed on the front foot And a wheel holding unit on the foot of at least one of the aforementioned rear legs, comprising: a wheel; a rotating body rotatably supporting the wheel; the fixing body being mounted on at least one of the legs, and The rotating body is supported in such a manner that the rotating body is rotatable about an axis non-parallel to the rotation axis of the aforementioned wheel; and the locking member is movable between a non-rotating position and a rotating position, the non-rotating position limiting the rotating body The rotational position is a position at which the rotating body is rotatable relative to the fixed body with respect to a position at which the fixed body rotates; and the folding operation of the baby carriage body may be performed at a restricted position where the folding operation of the baby carriage body is restricted a state maintaining member that can be moved between the disengaged positions is provided on the body frame; The operating member for operating the handle is disposed on the handle; the switching mechanism is configured to move the locking member according to the shaking of the handle relative to the body frame; the switching mechanism includes: a switching member to be movable Mode setting And the means for transmitting, wherein the operation means transmits the operation of the switching member to the locking member; and the operating member is configured to move the handle to press the state maintaining member to move; The handle is shaken to press the switching member to operate. The baby carriage of claim 1, wherein the body frame has: an armrest rotatably coupled to the front foot and the rear leg; and a first link rotatably coupled to the armrest; the state is maintained The member is supported by the first link, and the switching member is supported on the rear leg. The baby carriage of claim 1, wherein the operation member is movable along a longitudinal direction of a portion of the handle provided with the operation member, between an operation position and a non-operation position located below the operation position; and The operation position side is provided with potential energy in the direction of the non-operation position; the operation member abuts against the switching member from below to operate the switching member in accordance with the shaking of the handle. The baby carriage of claim 1, wherein the operation member is movable along a longitudinal direction of a portion of the handle provided with the operation member, between an operation position and a non-operation position located below the operation position; and The direction of the aforementioned operation position is given to the direction of the aforementioned non-operation position The state maintaining member is pressed by the operating member that moves from the non-operating position to the operating position, and moves from the restricting position to the releasing position. The stroller of claim 1, wherein the handle is swingable between a first position in which the operating member is engageable with the state maintaining member, and a second position in which the operating member is a position engageable with the switching member; and when the handle is located at the first position, the operating member is away from the switching member. The stroller of claim 1, wherein the handle is swingable between a first position in which the operating member is engageable with the state maintaining member, and a second position in which the operating member is a position engageable with the aforementioned switching member; the operating member is movable along a longitudinal direction of a portion of the handle in which the operating member is disposed, between an operating position and a non-operating position located below the aforementioned operating position; and The operation position side is provided with potential energy in a direction toward the non-operation position; the operation member has a contact surface which is a surface which can contact the state maintaining member from below when the handle is located at the first position, and when the handle is located in the foregoing In the second position, the switching member is contacted from below. The stroller of claim 6, wherein the operation member has an operation base that is slidable relative to the handle; and the operation protrusion is opposite to The portion of the handle in which the operation base portion is provided has a direction in which the longitudinal direction intersects and includes the contact surface. The stroller of claim 6, wherein the contact surface is curved when viewed from a direction parallel to the rocking axis of the handle. The baby carriage according to claim 6, wherein the contact surface includes a surface from which the operation member of the handle is swung from the first position to the second position when viewed from a direction parallel to a rocking axis of the handle. The surface of the moving path that is gradually longer from the front side to the rear side than the rocking axis. The stroller of claim 6, wherein when the handle is disposed in the first position, the operating member is in contact with the state maintaining member at a portion of the contact surface that is the longest distance from the rocking axis of the handle. . The baby carriage of claim 6, wherein the portion of the contact surface that will contact the state position member is a portion of the handle that is provided with the operation member when viewed from a direction parallel to the rocking axis of the handle. The long side is straight. The baby carriage of claim 6, wherein the switching member has: a switching base that is slidable relative to the rear leg; and a switching protrusion that intersects with respect to a longitudinal direction of a portion of the rear leg in which the switching base is provided The switching protrusion portion includes a receiving surface that moves along the operation member of the handle from the first position to the second position when viewed from a direction parallel to the rocking axis of the handle a receiving surface that gradually increases in distance from the front side toward the rear side in the radial direction from the front side; the operating member contacts the receiving surface of the switching member along with the rocking of the handle to the second position.