CN112203921B - Baby carriage - Google Patents

Abstract

The present invention relates to a stroller (10) which can be deformed between an unfolded state and a folded state, the stroller (10) comprising: a grip (15); a 1 st link member (31) rotatably connected to the grip (15); a rear leg (24) rotatably connected to the 1 st link member (31); a front leg (22) rotatably connected to a rear leg (24), the rear leg (24) having: a connection base (24 a) connected to the 1 st link member (31) and the front leg (22); and a rear leg portion (24 b) extending from the connection base portion (24 a) between a connection position to the 1 st link member (31) and a connection position to the front leg (22).

Description

Baby carriage

Technical Field

The present invention relates to a stroller deformable between an unfolded state and a folded state.

Background

Strollers having grips, armrests, front legs, and rear legs (e.g., JP 2004-237784A) are widely available. In this stroller, the rear end of the armrest is swingably connected to the grip. The armrest has a pair of side walls and an upper wall connected between the pair of side walls, and is open downward as a whole. The rear legs and the front legs extend into the armrest from below and are pivotally connected to the armrest at the upper ends thereof. Such front and rear legs can be rotated in a wide angle range with respect to the armrest, thereby enabling the stroller to be downsized in the folded state.

However, due to limitations in design of the stroller, seat configuration, and the like, a shape that opens downward may not be adopted as the shape of the armrest. On the other hand, downsizing in the folded state is a general problem of the stroller, and in order to solve the problem, it is effective to enlarge a rotatable range between components such as front legs and rear legs.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to reduce the size of a stroller in a folded state by increasing a pivoting angle between components.

The first stroller of the present invention is deformable between an unfolded state and a folded state, and includes:

a grip;

a 1 st link member rotatably connected to the grip;

a rear leg rotatably connected to the 1 st link member;

a front leg rotatably connected to the rear leg,

the rear leg has: a connection base connected to the 1 st link member and the front leg; and a rear leg portion extending from the connection base portion between a connection position to the 1 st link member and a connection position to the front leg.

In the stroller 1 according to the present invention, the connection base may have a longitudinal direction that is not parallel to a direction in which the rear leg portion extends.

In the 1 st stroller of the present invention, at least a part of the 1 st link member including a connection position to the rear leg, the connection base of the rear leg, and at least a part of the front leg including a connection position to the rear leg may be linearly arranged.

The first stroller of the present invention may further include: a 2 nd connecting rod part which is respectively and rotatably connected with the grip and the rear leg; a 3 rd link member rotatably connected to the front leg, the grip, or the 2 nd link member, respectively.

In the stroller of claim 1, the front leg may include: a front leg frame having a pair of front leg side portions connected to the rear legs and a front leg connecting portion connecting the pair of front leg side portions; and a plate member supported by at least a part of a connection position including the front leg side portion and the pair of front leg side portions and connecting to the front leg connecting portion.

In the first stroller of the present invention, the plate member may include: a gentle slope section supported by at least the front leg connecting section; steep inclined plane portion, from the rear with gentle inclined plane portion connects, gentle inclined plane portion with steep inclined plane portion inclines towards the rear direction, the inclination for the walking face of gentle inclined plane portion is less than the inclination for the walking face of steep inclined plane portion.

The stroller 1 according to the present invention may further include a front wheel holding member supported by the front legs and including a front wheel, and the gently sloping surface portion may be positioned above the front wheel.

The stroller of claim 2 of the present invention may further include:

a stroller body having the handle, the front leg, the rear leg, the 1 st link member, the 2 nd link member, and the 3 rd link member;

a seat supported by the baby carriage body,

the 1 st link member may have a holding member for detachably holding the seat.

According to the present invention, the size of the stroller in the folded state can be reduced by increasing the pivotable angle between the constituent elements.

Drawings

Fig. 1 is a view for explaining embodiment 1 of the present invention, and is a perspective view showing a stroller in a deployed state.

Fig. 2 is a side view of the stroller shown in fig. 1.

Fig. 3 is a perspective view of a link member of the stroller shown in fig. 1.

Fig. 4 is a side view of the link member shown in fig. 3.

Fig. 5 is a cross-sectional view of a widthwise center plane of the plate member of the stroller shown in fig. 1 in the front-rear direction of the stroller.

Fig. 6 is a side view illustrating a folded state of the stroller shown in fig. 1.

Fig. 7 is a view corresponding to fig. 4, and is a side view of the link member of the stroller shown in fig. 5.

Fig. 8 is a view for explaining embodiment 2 of the present invention, and is a perspective view showing a stroller in an unfolded state.

Fig. 9 is a side view of the stroller shown in fig. 8.

Fig. 10 is a perspective view of a connecting portion between the stroller body and the seat in the stroller shown in fig. 8.

Fig. 11 is a perspective view showing a holding member attached to the stroller body shown in fig. 10.

Fig. 12A is a perspective view showing a connecting member of the seat shown in fig. 10.

Fig. 12B is a diagram illustrating the inside of the connecting member illustrated in fig. 12A.

Fig. 12C is a view showing the inside of the connecting member shown in fig. 12A.

Fig. 13 is a side view illustrating a folded state of the stroller shown in fig. 8.

Fig. 14 is a view for explaining embodiment 3 of the present invention, and is a perspective view showing a stroller in a deployed state.

Fig. 15 is a side view showing a child seat attached to a seat of a vehicle.

FIG. 16 is a side view showing the adapter retained to the retention member and the child seat supported on the adapter.

Fig. 17 is a perspective view showing the entire configuration of the adapter.

Fig. 18A is a diagram showing the inside of the connecting member.

Fig. 18B is a diagram showing the inside of the connecting member.

Fig. 19 is a side view illustrating a folded state of the stroller shown in fig. 14.

Detailed Description

< embodiment 1 >

Embodiment 1 of the present invention will be described below with reference to the drawings.

First, the entire structure of the stroller 10 will be described with reference to fig. 1 and 2. Fig. 1 and 2 show an overall structure of the stroller 10. As shown in fig. 1, the entire stroller 10 according to embodiment 1 is configured to be substantially symmetrical about a center plane in the width direction in the front-rear direction. As shown in fig. 1 and 2, the stroller 10 includes a stroller body 11 constituting a frame, and a seat 40 supported by the stroller body 11. In addition, a canopy 100 is provided in the stroller body 11 to protect an infant seated on the seat 40 from sunshine and wind.

Next, the entire structure of the stroller body 11 will be described with reference to fig. 1 to 7. Fig. 3 shows the link members of the stroller body 11 in the deployed state. Fig. 4 is a side view of the link member shown in fig. 3 as viewed from the inner side of the stroller 10 in the width direction of the stroller 10. Fig. 5 shows a cross section along the width-direction center plane of the front leg 22. In addition, the stroller 10 is shown in a folded state in fig. 6. Fig. 7 is a view corresponding to fig. 4, and is a side view of the link member shown in fig. 6, as viewed from the inside of the stroller 10 in the width direction of the stroller 10.

As is widely used (for example, JP2005-082082A and JP 2006-117012A), the stroller main body 11 is configured to be deformable between an expanded state and a folded state, and is configured to be foldable from the expanded state shown in fig. 1 and 2 to the folded state shown in fig. 6 and to be expandable from the folded state to the expanded state. The stroller main body 11 includes a grip 15, and an operator (guardian) can hold the grip 15 from the back side of the infant and operate the stroller 10, thereby enabling the infant to walk with the stroller 10 facing forward in the traveling direction.

In the present specification, unless otherwise specified, terms of "front", "rear", "upper", "lower", "front-rear direction" and "up-down direction" with respect to the stroller 10 and the stroller body 11 indicate "front", "rear", "upper", "lower", "front-rear direction" and "up-down direction" with reference to an operator who operates the stroller 10 in the deployed state. More specifically, the "front-rear direction" of the stroller 10 refers to a direction connecting the lower left and upper right of the paper in fig. 1, and corresponds to the left-right direction of the paper in fig. 2. Unless otherwise specified, "front" means a side facing the operator who operates the stroller 10, and the lower left side of the drawing sheet in fig. 1 and the left side of the drawing sheet in fig. 2 are the front side of the stroller 10. On the other hand, the "up-down direction" of the stroller 10 refers to a direction orthogonal to the front-back direction and orthogonal to the ground contact surface (walking surface) S. Therefore, when the ground plane is a horizontal plane, "vertical direction" means a vertical direction. The "width direction" or the "vehicle width direction" refers to a lateral direction and is a direction orthogonal to both the "front-rear direction" and the "vertical direction". Further, "right" and "left" also indicate "right" and "left" in the lateral direction or the width direction, respectively, with respect to the operator who operates the stroller 10.

In the present specification, unless otherwise specified, the terms "up", "down", and "up-down direction" with respect to the stroller 10 and the stroller body 11 in the folded state mean "up", "down", and "up-down direction" with reference to a state in which the front and rear wheels of the stroller 10 are grounded (self-standing state). In addition, unless otherwise specified, the terms "width direction", "vehicle width direction", "right" and "left" with respect to the stroller 10 and the stroller body 11 in the folded state indicate directions and sides corresponding to the "width direction", "vehicle width direction", "right" and "left" of the stroller 10 in the unfolded state. The term "front-rear direction" with respect to the stroller 10 and the stroller body 11 in the folded state is a direction perpendicular to both the "vertical direction" and the "width direction", and corresponds to the left-right direction on the paper surface in fig. 6. Unless otherwise specified, "front" means a side where the front legs 22 described later are located, and the left side of the drawing sheet in fig. 6 is the front side of the stroller 10. The "rear" indicates a side where the grip 15 is located, and the right side of the drawing sheet in fig. 6 is the rear side of the stroller 10.

As shown in fig. 1, the stroller main body 11 includes, in addition to the grip 15: a front leg 22 including a pair of front leg side portions 23a disposed on the left and right sides; a pair of rear legs 24 disposed on the left and right sides, respectively; a pair of 1 st link members 31 as side frame members disposed on the left and right, respectively; a pair of 2 nd link members 32 and a pair of 3 rd link members 33 respectively disposed on the left and right sides. As shown in fig. 1 and 2, the front leg 22 includes a front leg frame 23, and the front leg frame 23 includes the pair of front leg side portions 23a and a front leg connecting portion 23b connecting the pair of front leg side portions 23a. Further, the front leg 22 has a plate member 60 supported by the front leg frame 23. A front wheel holder (caster) 25 including a front wheel 25a is provided at a lower end of the front leg frame 23, and a rear wheel 26 is provided at a lower end of the rear leg 24. The stroller body 11 supports a seat 40, and the seat 40 is disposed between the pair of front leg side portions 23a and between the pair of rear legs 24. In the illustrated example, the stroller 10 is configured as a tricycle having 1 front wheel 25a and two rear wheels 26, but is not limited thereto, and may be configured as a four-wheel vehicle having 2 front wheels 25a and two rear wheels 26, as shown in fig. 8, which will be referred to later.

As shown in fig. 1, in the present embodiment, the grip 15 includes a pair of grip side portions 15a disposed on the left and right sides, respectively, and a grip intermediate portion 15b connected between the pair of grip side portions 15a, and has a substantially U-shape as a whole. In the stroller 10 in the deployed state, the lower end portion of the grip 15 is engaged with an engaging member 17 provided at the middle portion of the rear leg 24. Thereby limiting the relative rotation of grip 15 and hind legs 24.

As shown in fig. 1, the grip 15 includes an operation member 18 slidably provided on the grip side portion 15a, and a remote operation device 18a provided on the grip middle portion 15b to be capable of remotely operating the operation member 18 by sliding. The operating member 18 is urged downward (toward the U-shaped end) by a spring (not shown) provided in the grip side portion 15 a. As shown in fig. 3, the operating member 18 has a convex portion 18b that protrudes toward the 2 nd link member 32 in the width direction of the stroller 10. The convex portion 18b links with a lock member 19 described later to hold the stroller 10 in the unfolded state or the folded state.

As shown in fig. 1 and 2, the pair of 1 st link members 31 are rotatably (swingably) connected to the middle portions of the grip side portions 15a arranged on the corresponding sides (left or right sides) thereof. As shown in fig. 4, the 1 st link member 31 is connected at its rear portion to the grip side portion 15a via a shaft member 51 extending in the width direction of the stroller 10. In the illustrated example, the 1 st link member 31 is a straight rod-shaped member, but is not limited thereto. Various shapes can be given to the 1 st link member 31. For example, similarly to the conventional armrest described as the related art, the 1 st link member 31 may have a pair of side walls and an upper wall portion connecting the pair of side walls, and may be configured to be opened downward as a whole. This improves the degree of freedom in designing the stroller 10, and effectively improves the aesthetic appearance.

As shown in fig. 1 and 2, the rear leg 24 has a connection base 24a constituting an upper end portion thereof and a rear leg portion 24b extending from the connection base 24 a. At the lower end of the rear leg portion 24b, a rear wheel 26 is provided.

As shown in fig. 1, the connection base portion 24a is rotatably (swingably) connected to the 1 st link member 31 arranged on the corresponding side (left or right side). In addition, the connection base 24a is rotatably (swingably) connected to the front leg side 23a disposed on the corresponding side (left or right side). The rear leg portion 24b extends from the coupling base portion 24a between a coupling position to the 1 st link member 31 and a coupling position to the front leg 22. This effectively prevents interference between the rear leg portion 24b and the 1 st link member 31, and allows the rear leg portion 24 and the 1 st link member 31 to rotate in a wide angular range. As such, it is possible to effectively prevent interference between the rear leg portions 24b and the front legs 22 and to rotate the rear legs 24 and the front legs 22 over a wide angular range. Further, the rear leg 24 and the 1 st link member 31 can be brought close to each other. Further, the rear leg 24 and the front leg 22 can be brought close to each other. As a result, as shown in fig. 6 and 7, the 1 st link member 31, the rear leg 24, and the front leg 22 can be brought closer to each other, and the size of the stroller 10 in the folded state can be reduced.

As shown in fig. 4, the connection base 24a has a longitudinal direction Da that is not parallel to the direction Db in which the rear leg portion 24b protrudes. The front portion of the 1 st link member 31 is connected to one side portion (rear portion) in the longitudinal direction Da of the connection base 24a via a shaft member 52 extending in the width direction of the stroller 10. The upper end portion of the front leg 22 is connected to the other longitudinal portion (front portion) of the connecting base 24a via a shaft member 53 extending in the width direction of the stroller 10.

The coupling base 24a has a longitudinal direction Da, so that interference of the rear leg portion 24b and the 1 st link member 31 can be effectively prevented, and the rotatable range of the rear leg 24 and the 1 st link member 31 can be increased. In addition, interference between rear leg portions 24b and front legs 22 can be effectively prevented, and the rotatable range of rear legs 24 and front legs 22 can be increased. As a result, as shown in fig. 6 and 7, the 1 st link member 31, the rear leg 24, and the front leg 22 can be brought closer to each other, and the size of the stroller 10 in the folded state can be reduced. As shown in fig. 6 and 7, in a state where the rear leg 24 and the 1 st link member 31 are brought close to each other by the relative rotation, a gap can be formed between the rear leg 24 and the 1 st link member 31. Similarly, in a state where the rear legs 24 and the front legs 22 are brought close to each other by the relative rotation, a gap can be formed between the rear legs 24 and the front legs 22. By forming the gap even after the relative rotation, it is possible to effectively prevent the clothes and the like from being caught between the elements constituting the relative movement in association with the folding movement or the unfolding movement.

As shown in fig. 4, at least a part 31a of the 1 st link member 31 including the connecting position to the rear leg 24, the connecting base 24a of the rear leg 24, and at least a part 22a of the front leg 22 including the connecting position to the rear leg 24 are linearly arranged. This allows the operating force to be smoothly applied from the grip 15 to the front leg 22 via the 1 st link member 31 and the rear leg 24. Further, the force from the walking surface S is smoothly transmitted from the front leg 22 to the grip 15 via the rear leg 24 and the 1 st link member 31. Accordingly, an appropriate operation force can be applied to the stroller 10 while the state of the walking surface S is grasped, and the controllability of the stroller 10 can be effectively improved. In the illustrated example, the portion 31a, the connection base 24a, and the portion 22a are linearly arranged, but the present invention is not limited thereto, and may be arranged in a continuous curved shape.

Next, the 2 nd link member 32 will be explained. As shown in fig. 1, the left 2 nd link member 32 is rotatably (swingably) connected to the left grip side portion 15a of the grip 15 and the left rear leg 24, respectively. Similarly, the right 2 nd link member 32 is rotatably (swingably) connected to the right grip side portion 15a of the grip 15 and the right rear leg 24, respectively. Thus, in the deformation of the stroller 10 from the unfolded state to the folded state, the grip 15 can be lowered downward while approaching the rear leg 24. And as shown in fig. 6, the stroller 10 can be downsized in the folded state in the up-down direction.

As shown in fig. 4, each 2 nd link member 32 has a 2 nd link body portion 32a connected to the grip 15 and the rear leg 24. Each 2 nd link member 32 has a projecting portion 32b projecting from the 2 nd link body portion 32a between a connecting position to the grip 15 and a connecting position to the rear leg 24. The extension portion 32b extends forward in the deployed state of the stroller 10. Each 2 nd link body portion 32a is connected at a part thereof to a lower part of the grip side portion 15a (more specifically, between a lower end part of the grip side portion 15a and the operating member 18) via a shaft member 54 extending in the width direction of the stroller 10. Further, each of the 2 nd link body portions 32a is connected at another portion thereof to an intermediate portion of the rear leg 24 via a boss portion 55 extending in the width direction of the stroller 10.

A portion of each 2 nd link body portion 32a connected to the grip side portion 15a is provided with a lock member 19 protruding toward the grip side portion 15 a. As shown in fig. 4, the lock member 19 is formed in a shape in which a circle centered on the shaft member 54 is cut off at a plurality of places as viewed in the width direction of the stroller 10. In the lock member 19, two recesses 19a and 19b extending in the radial direction of a circle centered on the shaft member 54 are provided at different positions in the circumferential direction. In the expanded state or the folded state of the stroller 10, the concave portions 19a and 19b receive the convex portion 18b of the operating member 18 sliding along the grip 15 from below. That is, as is apparent from fig. 4 and 7, when the stroller 10 is deformed from the unfolded state to the folded state, the lock member 19 and the 2 nd link member 32 rotate together. Therefore, the posture of the lock member 19 with respect to the grip 15 at this time is changed. In the locking member 19, the concave portion 19a is positioned so as to be able to receive the convex portion 18b of the operating member 18 (see fig. 4) positioned on the grip 15 when the stroller 10 is in the deployed state. The concave portion 19b is positioned so as to be able to receive the convex portion 18b of the operating member 18 positioned on the grip 15 when the stroller 10 is in the folded state.

In the unfolded state of the stroller 10, the convex portion 18b of the operating member 18 is accommodated in the concave portion 19a, and the lock member 19 is engaged with the grip 15, thereby restricting the relative rotation of the 2 nd link member 32 and the grip 15. Thereby, the stroller 10 is maintained in the deployed state. In the folded state of the stroller 10, the convex portion 18b of the operating member 18 is accommodated in the concave portion 19b, and the lock member 19 is engaged with the grip 15, thereby restricting the relative rotation between the 2 nd link member 32 and the grip 15. Thereby, the stroller 10 is maintained in the folded state.

Next, the 3 rd link member 33 will be explained. As shown in fig. 1, the left 3 rd link member 33 is rotatably (swingably) connected to the left 2 nd link member 32 and the left front leg side portion 23a, respectively. Similarly, the right 3 rd link member 33 is rotatably (swingably) connected to the right 2 nd link member 32 and the right front leg side portion 23a, respectively. Thus, in the deformation of the stroller 10 from the unfolded state to the folded state, the front leg 22 is pulled toward the grip 15 and the rear leg 24 via the 3 rd link member 33. As shown in fig. 6 and 7, the stroller 10 can be reduced in size in the folded state in the front-rear direction.

Each of the 3 rd link members is connected to the extension portion 32b of the 2 nd link member 32 via a shaft member 56 extending in the width direction of the stroller 10 in a part (rear part) thereof. In addition, each 3 rd link member 33 is connected to an intermediate portion of the front leg side portion 23a at the other portion (front portion) via a shaft member 57 extending in the width direction of the stroller 10. The 3 rd link member 33 is connected to the 2 nd link member 32 at a position formed between the connection position to the grip 15 and the connection position to the rear leg 24, so that the front wheel 25a held by the front leg 22 and the rear wheel 26 held by the rear leg 24 can be effectively prevented from being too close to each other in the folded state of the stroller 10 (see fig. 6). This enables the stroller 10 in the folded state to stand by itself more stably. Further, the 3 rd link member 33 is connected to the 2 nd link member 32 in the projecting portion 32b, so that the front wheel 25a held by the front leg 22 and the rear wheel 26 held by the rear leg 24 can be more effectively prevented from being too close in the folded state of the stroller 10 (see fig. 6). This enables the stroller 10 in the folded state to stand by itself more stably.

In the illustrated example, the 3 rd link member 33 is connected to the 2 nd link member 32, but the present invention is not limited thereto. The 3 rd link member 33 may be rotatably (swingably) connected to the grip 15.

Next, the plate member 60 will be explained. As shown in fig. 1, the plate member 60 of the front leg 22 is mounted to the front leg frame 23. The plate member 60 prevents the infant's feet from entering between the pair of front leg side portions 23a when the infant is seated in the stroller 10 and during sitting. As shown in fig. 5, the plate member 60 has a gently sloping surface portion 60a supported by at least the front leg connecting portion 23b, and a steeply sloping surface portion 60b connected to the gently sloping surface portion 60a from behind. The gentle slope surface portion 60a and the steep slope surface portion 60b are inclined in the backward direction, and the inclination angle of the gentle slope surface portion 60a with respect to the running surface S is smaller than the inclination angle of the steep slope surface portion 60b with respect to the running surface S. The gently sloping surface portion 60a can be used as a step or a step when riding the stroller 10. The gently sloping surface portion 60a is disposed so as to be positionable above the front wheel 25 a. This ensures stability of the stroller 10 when the gently sloping surface portion 60a is used as a step or a step. In particular, as shown in the drawing, in the case where the stroller 10 is configured as a tricycle, the stroller 10 can be effectively stabilized. The inclination angle of the gentle slope surface 60a with respect to the running surface S is preferably 10 ° to 20 °. This ensures stability of the stroller 10 even when the gently sloping surface portion 60a is used as a step or a step. The plate member 60 is formed of, for example, resin.

Returning to fig. 1, the illustrated stroller body 11 includes a rear connecting rod 27 connected between the pair of rear legs 24 as a constituent element extending in the width direction. Further, a detachable protective member 28 is provided between the connection base portions 24a of the pair of rear legs 24.

Next, the seat 40 will be explained. As shown in fig. 1, the seat 40 is disposed between the pair of front leg side portions 23a and between the pair of rear legs 24, and is supported by the stroller body 11. The seat 40 includes a seat body 40a and a cushion seat 90 attached to the seat body 40 a. The seat main body 40a includes a seat support member 41 and a back support member 42. As shown in fig. 3, in the present embodiment, the seat support member 41 and the back support member 42 are rotatably (swingably) connected via the shaft member 56 that rotatably connects the 2 nd link part 32 and the 3 rd link part 33. In the illustrated example, the seat support member 41 and the 3 rd link part 33 are formed integrally. The 3 rd link part 33 constitutes a side portion of the seat support member 41.

The seat support member 41 is positioned below the buttocks of the infant seated in the stroller 10. In addition, the back support member 42 is located behind the back of an infant seated in the stroller 10. The seat support member 41 and the back support member 42 of the present embodiment are formed of a resin plate material having a rectangular outline as a whole. The resin plate material forming the seat support member 41 and the back support member 42 is hollowed out as necessary to ensure lightness and air permeability. The both ends of the back support member 42 are supported from below or behind by ropes 45 fixed to the grip side portions 15a of the one and the other. By adjusting the length of the cord 45, the angle (inclination angle) of the back support member 42 with respect to the seat support member 41 can be adjusted.

The seat main body 40a further includes a side support member 43 positioned on the side of the infant seated on the stroller 10, and a head support member 44 positioned on the head side of the infant seated on and lying on the stroller 10. The side support member 43 rotatably (swingably) couples both end portions of the U-shape with respect to the middle portion of the grip side portion 15a on the corresponding side. The head-side support member 44 is a pair of substantially linear members. One end and the other end of each head-side support member 44 are rotatably (swingably) connected to the back support member 42 and the side support member 43, respectively.

The stroller 10 (stroller body 11) having the above-described overall configuration performs the following operation in which the respective components are rotated with respect to each other so as to be foldable.

First, in the stroller 10 in the deployed state, the convex portion 18b of the operating member 18 is accommodated in one of the concave portions 19a of the lock member 19. Thereby, the relative rotation of the 2 nd link member 32 and the grip 15 is restricted. Therefore, the 2 nd link member 32 and the grip 15 are disengaged from each other via the lock member 19 by operating the remote operation device 18a. Specifically, the operation member 18 is moved upward by the remote operation device 18a. This releases the fixation of the 2 nd link member 32 to the grip 15, and further releases the fixation of the 2 nd link member 32 to the other component. At this time, the lower end portion of the grip 15 is engaged with an engaging member 17 provided at the middle portion of the rear leg 24.

From this state, the grip 15 disposed at the rear position is once lifted upward and rearward, and the engagement of the lower end portion of the grip 15 with the rear leg 24 is released. The grip 15 is then pressed down. At this time, in fig. 2 and 4, the 1 st link member 31 rotates clockwise with respect to the rear leg 24. Thereby, the grip 15 and the rear leg 24 come close to each other (see fig. 6 and 7). When the grip 15 is pushed down, the 2 nd link member 32 and the grip 15 are operated together. As a result, the 2 nd link member 32 rotates clockwise with respect to the rear leg 24 in fig. 2 and 4. With this operation of the 2 nd link member 32, the 3 rd link member 33 is pulled rearward. When the 3 rd link member 33 is pulled rearward, the front leg 22 is pulled toward the rear leg 24 while rotating counterclockwise in fig. 2 and 4 with respect to the rear leg 24 (see fig. 6 and 7). As described above, the stroller 10 is reduced in size in the front-rear direction as shown in fig. 6 and 7. At this time, the arrangement position of the grip 15 is lowered as described above. As a result, not only the front-rear direction size of the stroller 10 but also the vertical direction size of the stroller 10 can be reduced.

On the other hand, the stroller 10 (the stroller main body 11) is unfolded from the folded state only by performing an operation reverse to the folding operation.

As described above, according to embodiment 1, the stroller 10 is deformable between the deployed state and the folded state, and the stroller 10 includes: a grip 15; a 1 st link member 31 rotatably connected to the grip 15; a rear leg 24 rotatably connected to the 1 st link member 31; a front leg 22 pivotally connected to a rear leg 24. And the rear leg 24 has: a connection base 24a connected to the 1 st link member 31 and the front leg 22; and a rear leg portion 24b extending from the coupling base portion 24a between a coupling position to the 1 st link member 31 and a coupling position to the front leg 22.

According to embodiment 1, the rear leg 24 and the 1 st link member 31 can be rotated in a wide angle range so that the rear leg 24 and the 1 st link member 31 approach each other. Likewise, the rear legs 24 and the front legs 22 can be rotated through a wide angular range so that the rear legs 24 and the front legs 22 approach each other. As a result, as shown in fig. 6, the 1 st link member 31, the rear leg 24, and the front leg 22 can be brought closer to each other, and the stroller 10 can be downsized in the folded state. In addition, various shapes may be given to the 1 st link member 31. Specifically, the 1 st link member 31 may be configured as a rod-shaped member. This improves the degree of freedom in designing the stroller 10, and effectively improves the aesthetic appearance.

In addition, according to embodiment 1, the connection base 24a has a longitudinal direction Da that is not parallel to the direction Db in which the rear leg portion 24b protrudes. The coupling base 24a has a longitudinal direction Da, so that the rotatable range of the rear leg 24 and the 1 st link member 31 can be stably increased. In addition, the rotatable range of the rear legs 24 and the front legs 22 can be stably increased. As shown in fig. 6 and 7, in a state where the rear leg 24 and the 1 st link member 31 are brought close to each other by the relative rotation, a gap can be formed between the rear leg 24 and the 1 st link member 31. Similarly, in a state where the rear legs 24 and the front legs 22 are brought close to each other by the relative rotation, a gap can be formed between the rear legs 24 and the front legs 22. By forming the gap even after the relative rotation, it is possible to effectively prevent the clothes and the like from being caught between the components performing the relative operation in association with the folding operation or the unfolding operation.

In addition, according to embodiment 1, at least a part 31a of the 1 st link member 31 including the connecting position to the rear leg 24, the connecting base 24a of the rear leg 24, and at least a part 22a of the front leg 22 including the connecting position to the rear leg 24 are linearly arranged. Since at least a part 31a of the 1 st link member 31 including the connecting position to the rear leg 24, the connecting base 24a of the rear leg 24, and at least a part 22a of the front leg 22 including the connecting position to the rear leg 24 are linearly arranged, the operation force can be smoothly applied from the grip 15 to the front leg 22 via the 1 st link member 31 and the rear leg 24. Further, the force from the walking surface S is smoothly transmitted from the front leg 22 to the grip 15 via the rear leg 24 and the 1 st link member 31. Accordingly, an appropriate operating force can be applied to the stroller 10 while the state of the traveling surface S is grasped, and the maneuverability of the stroller 10 can be effectively improved.

Further, according to embodiment 1, the present invention further includes a 2 nd link member 32 rotatably connected to the grip 15 and the rear leg 24, respectively, and a 3 rd link member 33 rotatably connected to the front leg 22, the grip 15, or the 2 nd link member 32, respectively. As shown in fig. 6, in such a stroller 10, the grip 15 can be lowered downward while approaching the rear leg 24 in the deformation from the expanded state to the collapsed state. In the deformation from the unfolded state to the folded state, the front leg 22 is pulled toward the grip 15 and the rear leg 24 via the 3 rd link member 33. This allows the stroller 10 to be reduced in size in the folded state in the front-rear direction and the up-down direction.

In addition, according to embodiment 1, the front leg 22 has: a front leg frame 23 having a pair of front leg side portions 23a connected to the rear legs 24 and a front leg connecting portion 23b connecting the pair of front leg side portions 23 a; the plate member 60 is supported by at least a part of a connecting position between the front leg connecting portions 23b including the front leg side portions 23a and the pair of front leg side portions 23a. This effectively prevents the foot from entering between the pair of front leg side portions 23a.

Further, according to embodiment 1, the plate member 60 includes the gentle slope portion 60a supported by at least the front leg connecting portion 23b and the steep slope portion 60b connected to the gentle slope portion 60a from the rear, the gentle slope portion 60a and the steep slope portion 60b are inclined in the rear direction, and the inclination angle of the gentle slope portion 60a with respect to the running surface S is smaller than the inclination angle of the steep slope portion 60b with respect to the running surface S. According to the plate member 60, the gently sloping surface portion 60a can be used as a step or a step when the stroller 10 is seated.

Further, according to embodiment 1, the stroller 10 further includes the front wheel holder 25 including the front wheel 25a supported by the front leg 22, and the gently sloping surface portion 60a may be positioned above the front wheel 25 a. This ensures stability of the stroller 10 when the gently sloping surface portion 60a is used as a step or a step. Particularly, when the stroller 10 is configured as a tricycle, it is effective to be able to effectively stabilize the stroller 10.

< embodiment 2 >

Next, embodiment 2 of the present invention will be described with reference to fig. 8 to 13. The 2 nd embodiment described with reference to fig. 8 to 13 is different from the 1 st embodiment in the following points. That is, the stroller 110 is configured as a four-wheel vehicle. The 1 st link member 310 includes a holding member 130, and the seat 140 is detachably supported by the stroller body 111 via the holding member 130. However, other configurations can be the same as those of embodiment 1. In the following description of embodiment 2 and the drawings used in the following description, the same reference numerals are used for parts that can be configured in the same manner as in embodiment 1, and the overlapping description is omitted.

Fig. 8 and 9 are views showing the entire configuration of the stroller 110. Fig. 10 shows a connecting portion of the seat 140 and the stroller body 111. As shown in fig. 8, the seat 140 includes a main frame member 141, a cloth member 142 attached to the main frame member 141, and a connecting member 143 connected to the main frame member 141. As described above, the 1 st link member 310 includes the 1 st link body 31 having the same configuration as the 1 st link member 31 shown in fig. 1, and the holding member 130 that detachably holds the seat 140.

First, the holding member 130 will be described with reference to fig. 10 and 11. As shown in fig. 11, the holding member 130 includes: a connecting portion (receiving portion) 131 having a bottom portion 131a and side walls 131b, 131c, 131d, and 131e; and a mounting portion 132 extending from the connection portion 131 along the 1 st link body portion 31. As shown in fig. 10, the holding member 130 is fixed to the 1 st link body portion 31 in the mounting portion 132. The holding member 130 is fixed such that the internal space of the connection portion 131 is opened upward in the expanded state of the stroller 10. The side walls 131b and 131d facing the front or the rear of the connecting portion 131 are provided with engagement holes 133 that engage with projections 148 of the connecting members 143 of the seat 40, which will be described later.

Next, the main frame member will be described with reference to fig. 8. As shown in fig. 8, the main frame member 141 is a rectangular frame as a whole. The main frame member 141 includes: two frame members 141a, 141b having a substantially U-shape as a whole, and a pair of coupling parts 141c coupling the two frame members 141a, 141b. In the seat 140, a foot side frame member 141a is disposed on a side on which the feet of the infant are placed, and a head side frame member 141b is disposed on a side on which the head of the infant is placed. The U-shaped end of the foot side frame member 141a and the U-shaped end of the head side frame member 141b are coupled by a coupling member 141c disposed on the corresponding side. The protective member 128 is provided between the pair of coupling members 141c. The base of the canopy 100 is connected to the connecting member 141c. The connecting member 143 is connected to the connecting member 141c from the outside in the width direction of the stroller 10.

Next, the connection member 143 will be described with reference to fig. 12A. Fig. 12A shows the connection member 143. As shown in fig. 12A, the connection member 143 has a connection portion (connection body portion) 146 connected to the connection member 141c of the main frame member 141, and a mounting portion 147 protruding from the connection portion 146. The mounting portion 147 protrudes to the opposite side of the side where the protection member 128 of the main frame member 141 is provided, and is accommodated in the connecting portion 131 of the holding member 130. The mounting portion 147 has a shape corresponding to the connecting portion (receiving portion) 131 of the holding member 130, and has side surfaces 147b, 147c, 147d, and 147e. The attachment portion 147 has a protruding portion 148 on one 147b of the side surfaces 147b, 147d facing in the front-rear direction. The protrusion 148 is provided at a position corresponding to the engagement hole 133 of the holding member 130, and engages with the engagement hole 133. Thereby, the connecting member 143 is stably held by the holding member 130. The protruding portion 148 is received in the mounting portion 147 by operating an operation device 149 provided on the connecting portion 146. This allows the seat 140 to be disengaged from the engagement hole 133, and the seat 140 can be removed from the holding member 130.

The connection member 143, particularly the projection 148 and the operation device 149 will be described in further detail with reference to fig. 12B and 12C. Fig. 12B and 12C are diagrams illustrating the inside of the connection member 143. As shown in fig. 12B, the connection member 143 has a housing portion 143a that houses the projection 148 and the operation device 149. The receiving portion 143a constitutes the connecting portion 146 and the mounting portion 147. In a portion of the connecting portion 146 constituting the storage portion 143a, a 1 st opening 143b is provided in a region extending from one side in the front-rear direction (the side surface 147b side) toward the upper side in the deployed state of the stroller 110. In addition, a 2 nd opening 143c is provided in a portion of the receiving portion 143a constituting the side surface 147b of the mounting portion 147.

A protruding portion guide wall 147g extending in the front-rear direction in the deployed state of the stroller 110 and an acting portion guide wall 147h extending in the up-down direction in the deployed state of the stroller 110 are formed on the inner surface of the mounting portion 147.

The projection 148 is a plate-like member. In the mounting portion 147, the protruding portion 148 is configured to extend in the front-rear direction in the deployed state of the stroller 110 and to be movable along the protruding portion guide wall 147 g. The projection 148 is biased toward the 2 nd opening 143c by a projection biasing mechanism 148s disposed in the mounting portion 147. Therefore, when no force is applied to the projection 148, the 2 nd opening 143c side end 148a of the projection 148 projects out of the mounting portion 147 through the 2 nd opening 143c. A projection 148c that projects outward in the width direction of the stroller 110 and on which the operation device 149 operates is formed on the other end 148b (end on the side surface 147d side) of the projection 148. A surface facing the 2 nd opening 143c of the projection 148c forms an operation surface 148d on which the operation device 149 operates. In the deployed state of the stroller 110, the acting surface 148d is inclined upward toward the 2 nd opening 143c.

The operation device 149 includes an operation lever 149a and an operation portion 149b which operates on the projection 148 in accordance with the operation of the operation lever 149 a. The operating lever 149a is rotatably connected at its intermediate portion to a shaft member 149x extending in the width direction of the stroller 110 in the accommodating portion 143a. One end 149c of the lever 149a is exposed to the outside of the connecting portion 146 through the 1 st opening 143b. A projection 149e extending outward in the width direction of the stroller 110 is provided at the other end 149d of the operating lever 149 a. The lever biasing mechanism 149s is disposed in the connecting portion 146. The lever biasing mechanism 149s holds the lever 149a in the posture shown in fig. 12B, specifically, such that one end 149c of the lever 149a is positioned above the other end 149d in the deployed state of the stroller 110.

The acting portion 149b extends in a substantially vertical direction in the deployed state of the stroller 110. An opening 149g penetrating in the width direction of the stroller 110 is provided at an upper end 149f of the acting portion 149b. The opening 149g is inserted with the projection 149e of the operating lever 149 a. The upper end 149f of the acting portion 149b is swingably connected to the operating lever 149 a. The lower half of the acting portion 149b extends along the acting portion guide wall 147h, and moves along the acting portion guide wall 147h. A lower end 149g of the acting portion 149b is provided with an inclined surface 149h inclined in correspondence with the acting surface 148d of the protruding portion 148. The inclined surface 149h is inclined toward the 2 nd opening 143c side in the unfolded state of the stroller 110.

When no force is applied to the operation lever 149a, in the operation device 149 and the projection 148, the operation lever 149a is maintained at the position shown in fig. 12B by the operation lever biasing mechanism 149s, and thus the action portion 149B is also maintained at the position shown in fig. 12B. In this case, since the action portion 149B does not act on the projection 148, the projection 148 is also maintained at the position shown in fig. 12B by the projection urging mechanism 148 s. Therefore, one end 148a of the projection 148 projects from the mounting portion 147 through the 2 nd opening 143c. On the other hand, when a force is applied to the lever 149a to rotate the lever 149a from the position shown in fig. 12B to the position shown in fig. 12C, the action portion 149B connected to the other end 149d of the lever 149a rises, and the inclined surface 149h rises. Thereby, the operating surface 148d of the projection 148 is pushed in a direction away from the 2 nd opening 143c, and the one end 148a of the projection 148 is retracted into the mounting portion 147. In other words, in the deployed state of the stroller 110, the rotational movement of the operating lever 149a is converted into the vertical linear movement of the operating portion 149b, and further into the forward and backward linear movement of the protruding portion 148. Thus, the engagement between the protrusion 148 of the coupling member 143 and the engagement hole 133 of the holding member 130 can be released by operating the operating lever 149 a.

The seat 140 can be connected to the holding member 130 even if the front-rear direction thereof is reversed. Therefore, in fig. 8, the seat 140 is connected to the holding member 130 in a state where the head-side frame member 141b is disposed on the side of the grip 15, but may be connected to the holding member 130 in a state where the foot-side frame member 141a is disposed on the side of the grip 15.

However, as described above, when the handle 15 is lowered downward while approaching the rear leg 24 in the deformation of the stroller 110 from the unfolded state to the folded state, the 1 st link body portion 31 is tilted rearward. At this time, the holding member 130 fixed to the 1 st link body portion 31 also tilts rearward, and the main frame member 141 of the seat 140 supported by the holding member 130 also tilts rearward. Thereby, the seat 140 (particularly, the main frame member 141) moves rearward. Thus, even in the folded state, the stroller body 111 can stably support the seat 140, and the stroller 110 in the folded state can be self-erected.

As described above, according to embodiment 2, the stroller 110 includes: a stroller main body 111, the stroller main body 111 having a grip 15, a front leg 22, a rear leg 24, a 1 st link member 310, a 2 nd link member 32, and a 3 rd link member 33; the seat 140 is supported by the stroller main body 111. The 1 st link member 310 includes a holding member 130 that detachably holds the seat 140.

In the stroller 110 according to embodiment 2, the grip 15 can be lowered downward while approaching the rear leg 24 in the change from the unfolded state to the folded state. This allows the stroller 110 to be reduced in size in the folded state in the front-rear direction and the vertical direction. In addition, with the movement of the grip 15, the 1 st link member 310 having the holding member 130 can be tilted backward, and the constituent members of the seat 140 supported by the 1 st link member 310 can be moved backward. Thus, even in the folded state, the stroller body 111 can stably support the seat, and the stroller 110 in the folded state can be self-erected.

< embodiment 3 >

Next, embodiment 3 of the present invention will be described with reference to fig. 14 to 19. Embodiment 3 described with reference to fig. 14 to 19 is different from embodiment 2 mainly in the following points. That is, the seat 240 includes a child seat 250 and an adapter 260 that detachably connects the child seat 250 to the stroller body 111. However, other configurations can be the same as those of embodiment 2. In the following description of embodiment 3 and the drawings used in the following description, the same reference numerals are used for parts that can be configured in the same manner as in embodiment 2, and the description thereof will not be repeated for corresponding parts in embodiment 2.

Fig. 14 is a perspective view showing the entire configuration of the stroller 210. Fig. 15 is a side view showing the child seat 250 attached to the seat 200 of the vehicle. Fig. 16 is a side view showing the adapter 260 held to the holding member 130 and the child seat 250 supported by the adapter 260. Fig. 17 is a perspective view showing the entire configuration of the adapter 260. Fig. 18A and 18B are diagrams illustrating the inside of the connection member 263. Fig. 19 is a side view illustrating a folded state of the stroller 210 shown in fig. 14.

First, the child seat 250 will be described with reference to fig. 14 and 15. As shown in fig. 15, the child seat 250 is used by being disposed on a seat 200 of a vehicle such as an automobile. The child seat 250 is a device for allowing a child (an infant such as an infant, a small child, or a small child) to be seated on a vehicle including a seat (a vehicle seat) 200 designed for an adult and a seat belt 201 appropriately and safely. The child seat 250 described herein is mounted to the seat 200 in a "rearward position". As shown in fig. 15, in the "rearward state", the child seated in the child seat 250 faces rearward of the vehicle.

Here, the seat belt 201 includes a shoulder belt 202 extending from a shoulder on one side (right side in the illustrated example) to a lap on the other side (left side in the illustrated example), and a lap belt 203 extending from the lap on one side to the lap on the other side, that is, a so-called three-point seat belt. The seat belt 201 is formed of a single belt-like member, and a tongue 204 is inserted therethrough. The tongue 204 bends the one belt-like member to divide the seat belt 201 into the shoulder belt 202 and the lap belt 203. A buckle 205 is provided on the other side of the seat 200. The tongue 204 is locked to the buckle 205, and the body of the person sitting on the seat 200 is fixed to the seat 200 by the seat belt 201.

In the present specification, unless otherwise specified, the terms "front", "rear", "right", "left", "lateral", "upper" and "lower" used with respect to the child seat 250 and its constituent elements respectively denote "front", "rear", "right", "left", "lateral", "upper" and "lower" with reference to a child sitting on the child seat 250. The "width direction" of the child seat 250 and its constituent elements means a direction connecting "left" and "right", that is, "lateral direction". The "height direction" of the child seat 250 and its constituent elements is the "up-down direction". Further, the "front-rear direction" of the child seat 250 and its constituent elements is a direction connecting the "front" and the "rear", and in the illustrated example, coincides with the "front-rear direction" or the "traveling direction" of the vehicle and the stroller 210.

As shown in fig. 14, the child seat 250 includes a child seat main body 251 including a seat portion 252 on which a child sits or receives. Although not shown, a cushion cover is attached to the seat portion 252, and a child seat belt is attached to the child seat main body 251.

The seat portion 252 is a portion where a child sits or receives. The seat portion 252 includes a seat portion 254, a back portion 255, and side portions 256 respectively located on both sides of the seat portion 254 and the back portion 255. The seat 254 faces the hip of the child from below. The back 255 faces the back of the child from the rear. As shown in fig. 14, a child belt hole 257 through which a child belt passes is formed in the back 255. Each side 256 has a cutout 258. As shown in fig. 15, the cutout 258 guides the seat belt 201 to a prescribed path. As shown in fig. 15, when the child seat 250 is mounted on the seat 200 of the vehicle, the shoulder belt 202 and the lap belt 203 of the vehicle seatbelt 201 extending from one side pass through the cutout 258. And in this state, the tongue 204 is fixed to the buckle 205.

An end portion of a substantially U-shaped grip 253 is swingably connected to each side portion 256 of the seat portion 252. As shown in fig. 15, each side portion 256 of the seat portion 252 has an engagement convex portion 259 projecting outward in the width direction of the seat portion 252 and engaging with the adapter 260 at the center in the front-rear direction. The engagement convex portions 259 are retracted inside the side portions 256 by operating an operation device, not shown. This allows the child seat 250 to be removed from the adapter 260 by releasing the engagement between the child seat 250 and the adapter 260 (more specifically, the engagement between the engagement convex portion 259 and the engagement concave portion 264 of the adapter 260 described later).

Next, the adapter 260 will be described with reference to fig. 16 to 18B. The adapter 260 detachably connects the child seat 250 and the stroller body 111. In the present specification, unless otherwise specified, terms "front", "rear", "lateral", "upper", "lower", "front-rear direction" and "up-down direction" used with respect to the adapter 260 and its constituent elements indicate "front", "rear", "lateral", "upper", "lower", "front-rear direction" and "up-down direction" with reference to an operator who operates the stroller main body 111 in the unfolded state to which the adapter 260 is attached. More specifically, the "front-rear direction" of the adapter 260 refers to the left-right direction on the paper surface in fig. 16, and corresponds to the direction connecting the lower left and upper right directions on the paper surface in fig. 17. In the illustrated example, the "front-rear direction" also coincides with the "front-rear direction" or the "walking direction" of the stroller 210. Unless otherwise specified, "front" means a side toward which an operator who manipulates the stroller body 111 to which the adapter 260 is attached faces, and the left side of the drawing sheet in fig. 16 and the left lower side of the drawing sheet in fig. 17 are the front side of the adapter 260. On the other hand, the "up-down direction" of the adapter 260 refers to a direction orthogonal to the front-back direction and orthogonal to the ground plane (running plane) S. Therefore, when the ground plane is a horizontal plane, "vertical direction" means a vertical direction. The "width direction" is a lateral direction and is a direction orthogonal to both the "front-back direction" and the "up-down direction".

As shown in fig. 17, the adapter 260 includes a pair of side supporting portions 261, a coupling portion 262 that couples the pair of side supporting portions 261, and a pair of coupling members 263 that are coupled to the side supporting portions 261 from the outside in the width direction. In a state where the adapter 260 is attached to the child seat 250, the side support portion 261 is disposed on the outer side in the width direction of the child seat 250 facing the side portion 256 of the seat portion 252. The coupling portion 262 is disposed below the child seat 250. An engagement recess 264 is provided on a side of the side portion 256 facing each side support portion 261. In a state where the adapter 260 is attached to the child seat 250, the engagement concave portion 264 engages with the engagement convex portion 259 of the child seat 250.

The connecting member 263 includes a connecting portion (connecting body portion) 266 connected to the side supporting portion 261, and an attachment portion 267 extending downward from the connecting portion 266. When the adapter 260 is connected to the stroller body 111 in the unfolded state, the mounting portion 267 is received in the connection portion 131 of the holding member 130 from above. The mounting portion 267 has a shape corresponding to the connecting portion (receiving portion) 131 of the holding member 130, and has side surfaces 267b, 267c, 267d, 267e. The mounting portion 267 has a projection 268 on a side 267b facing forward. The protruding portion 268 is provided at a position corresponding to the engaging hole 133 of the holding member 130, and engages with the engaging hole 133. Thereby, the connection member 263 is stably held by the holding member 130. The projecting portion 268 is received in the mounting portion 267 by operating an operation device 269 provided at the connecting portion 266. This allows the adapter 260, and thus the seat 240 including the adapter 260 and the child seat 250, to be removed from the holding member 130 by releasing the engagement with the engagement hole 133 of the holding member 130.

The connecting member 263, particularly the projecting portion 268 and the operation device 269, will be described in further detail with reference to fig. 18A and 18B. As shown in fig. 18A, the connecting member 263 has a housing portion 263a that houses the protruding portion 268 and the operation device 269. The receiving portion 263a constitutes a connecting portion 266 and a mounting portion 267. In a portion of the receiving portion 263a constituting the connection portion 266, a 1 st opening 263b is provided in a region facing upward in the unfolded state of the stroller 210. In addition, a 2 nd opening 263c is provided in a portion of the receiving portion 263a constituting a side face 267b of the mounting portion 267.

A projecting portion guide wall 267g extending in the front-rear direction in the deployed state of the stroller 210 and an acting portion guide wall 267h extending in the up-down direction in the deployed state of the stroller 210 are formed on the inner surface of the mounting portion 267.

The projection 268 is a plate-like member. The projecting portion 268 is disposed so as to extend in the front-rear direction in the deployed state of the stroller 210 within the mounting portion 267 and to be movable along a projecting portion guide wall 267 g. The projecting portion 268 is urged toward the 2 nd opening 263c by a projecting portion urging mechanism 268s disposed in the mounting portion 267. Therefore, when no force is applied to the projecting portion 268, the end 268a of the projecting portion 268 on the 2 nd opening 263c side projects out of the mounting portion 267 through the 2 nd opening 263c. A projection 268c that projects outward in the width direction and on which the operation device 269 operates is formed at the other end 268b (end on the side face 267d side) of the projection 268. The surface facing the 2 nd opening 263c of the convex portion 268c constitutes an operation surface 268d on which the operation device 269 operates. The working surface 268d is inclined upward toward the opposite side of the 2 nd opening 263c.

The operation device 269 includes an action portion 269a extending in a substantially vertical direction in the deployed state of the stroller 210, and an action portion biasing mechanism 269s biasing the action portion 269a upward. The action portion 269a is urged by the action portion urging mechanism 269s, so that the upper end 269b of the action portion 269a protrudes outside the connecting portion 266 through the 1 st opening 263b in a state where no force is applied to the action portion 269 a. The upper end 269b constitutes an operation button 269b for operating the operation device 269. The lower half of the action 269a extends along the action guide wall 267h, and moves along the action guide wall 267h. A lower end 269c of the action portion 269a is provided with an inclined surface 269h inclined in accordance with the action surface 268d of the projecting portion 268. Inclined surface 269h is inclined upward toward the opposite side of opening 263c of 2 nd.

In the operation device 269 and the projecting portion 268, the action portion 269a is maintained at the position shown in fig. 18A by the action portion biasing mechanism 269s when no force is applied to the operation button 269b. In this case, since the acting portion 269a does not act on the projecting portion 268, the projecting portion 268 is also maintained at the position shown in fig. 18A by the projecting portion biasing mechanism 268 s. Therefore, one end 268a of the projecting portion 268 projects from the mounting portion 267 through the 2 nd opening 263c. On the other hand, when a force is applied to the operation button 269B and the action portion 269a is pushed down from the position shown in fig. 18A to the position shown in fig. 18B, the inclined surface 269h moves down. Thereby, the operating surface 268d of the projecting portion 268 is pushed in a direction away from the 2 nd opening 263c, and the one end 268a of the projecting portion 268 is retracted into the mounting portion 267. In other words, the vertical linear motion of the action portion 269a is converted into the forward and backward linear motion of the projecting portion 268. Thus, the engagement between the projection 268 of the coupling member 263 and the engagement hole 133 of the holding member 130 can be released by operating the operation button 269b of the operation portion 269 a.

However, as described above, when the handle 15 is lowered downward while approaching the rear leg 24 in the deformation of the stroller 210 from the unfolded state to the folded state, the 1 st link body portion 31 is tilted rearward. At this time, the holding member 130 fixed to the 1 st link body portion 31 also tilts backward, and the adapter 260 of the seat 240 supported by the holding member 130 tilts backward together with the child seat 250. As a result, the seat 240 moves rearward as shown in fig. 19. Thus, even in the folded state, the stroller body 111 can stably support the seat 240, and the stroller 210 in the folded state can be self-erected.

In addition, several modifications of the above embodiment have been described above, but it is needless to say that a plurality of modifications can be appropriately combined and applied.

Claims (9)

1. A stroller deformable between an unfolded state and a folded state, comprising:

a grip;

a 1 st link member rotatably connected to the grip;

a rear leg rotatably connected to the 1 st link member;

a front leg rotatably connected to the rear leg;

a 2 nd connecting rod part which is respectively and rotatably connected with the grip and the rear leg;

a 3 rd link member rotatably connected to the front leg and the 2 nd link member, respectively,

the rear leg has: a connection base rotatably connected to the 1 st link member and the front leg; a rear leg portion extending from the connection base portion between a connection position to the 1 st link member and a connection position to the front leg,

the 2 nd link member has: a 2 nd link body portion rotatably connected to the grip and the rear leg, respectively; a protrusion portion protruding forward from the 2 nd link main body portion between a connection position to the grip and a connection position to the rear leg,

the 3 rd link member is connected with the protruding part.

2. The stroller of claim 1,

the connection base has a length direction that is not parallel to a direction in which the rear leg portion protrudes.

3. The stroller of claim 1 or 2,

at least a part of the 1 st link member including a connection position connected to the rear leg, the connection base of the rear leg, and at least a part of the front leg including a connection position connected to the rear leg are linearly arranged.

4. The stroller according to claim 1, comprising:

a stroller body having the handle, the front leg, the rear leg, the 1 st link member, the 2 nd link member, and the 3 rd link member;

a seat supported by the baby carriage body,

the 1 st link member has a holding member for detachably holding the seat.

5. The stroller of claim 1,

the front leg has: a front leg frame having a pair of front leg side portions connected to the rear legs and a front leg connecting portion connecting the pair of front leg side portions; and a plate member supported by at least a part of a connection position including the front leg side portion and the pair of front leg side portions and connecting to the front leg connecting portion.

6. The stroller of claim 5,

the plate member has: a gently sloping surface portion supported by at least the front leg coupling portion; a steep slope part connected with the gentle slope part from the rear,

the gentle slope part and the steep slope part are inclined in a rearward direction,

the inclination angle of the gentle inclined plane part relative to the walking surface is smaller than that of the steep inclined plane part relative to the walking surface.

7. The stroller of claim 6,

further comprises a front wheel holding body which is supported by the front legs and includes front wheels,

the gentle slope portion may be located above the front wheel.

8. The stroller according to claim 1, comprising:

a stroller body having the handle, the front leg, the rear leg, the 1 st link member, the 2 nd link member, and the 3 rd link member;

a seat supported by the baby carriage body,

the seat includes a child seat and an adapter connecting the child seat to the stroller body,

the 1 st link member has a holding member for detachably holding the adapter.

9. The stroller of claim 8,

comprises a pair of 1 st link members rotatably connected to the grip,

the holding member holds the adapter between the pair of 1 st link members.

Images