CN107697141B - trolley - Google Patents

Abstract

The present invention provides a trolley (5) which can be folded from an unfolded state to a folded state, and the trolley comprises: a side frame member (28); front legs (22) and rear legs (24) whose upper portions are rotatably connected to the side frame members (28); a first link (40) rotatably coupled to a rear portion of the side frame member; a second link (45) that is rotatably connected to the middle portion of the front leg (22) and the lower portion of the first link (40), respectively; and a third link (50) that is rotatably connected to the middle portion of the rear leg (24) and the lower portion of the first link (40), respectively. The second link (45) rotatably connected to the intermediate portion of the front leg (22) and the lower portion of the first link (40) includes a pinching prevention portion (45p) protruding in a direction not parallel to the width direction.

Description

trolley

technical field

The present invention relates to a trolley that can be folded from an unfolded state to a folded state, and in particular, to a trolley capable of effectively preventing clothes and the like from being caught between structural units that are rotatably connected relative to each other during a folding operation or an unfolding operation. trolley between.

Background technique

Conventionally, strollers such as strollers for moving infants and/or pets, and carts for transporting goods are known. For example, as disclosed in Patent Document 1, most of the currently used carts can be folded from the unfolded state by rotatably connecting the structural units and making the structural units function as link members. Status collapsed. The stroller disclosed in Japanese Patent Application Laid-Open No. 2011-063097 can be folded so that the front legs and the handle are close to each other when viewed from the side, and the size of the stroller in the front-rear direction can be reduced by folding.

Convenience such as reduction of storage space and/or transportation can be improved by setting the trolley to be foldable. On the other hand, when the cart is unfolded or when the cart is folded, there is a possibility that clothing or the like is caught in the gap created between the structural unit and the link member. If clothes or the like is caught during unfolding and/or folding, unfolding and/or folding of the trolley cannot be performed smoothly.

SUMMARY OF THE INVENTION

The present invention has been made in consideration of the above-mentioned problems, and an object thereof is to effectively prevent clothes and the like from being caught between the structural units of the trolley when unfolding or folding the foldable trolley.

The trolley of the present invention is a trolley that can be folded from the unfolded state to the folded state, and has:

side frame parts;

front and rear legs, the upper parts of which are rotatably connected to the side frame members;

a first link rotatably connected to the rear portion of the side frame member;

a second link, which is rotatably connected to the middle part of the front leg and the lower part of the first link, respectively; and

A third link is rotatably connected to the middle part of the rear leg and the lower part of the first link, respectively,

The second link includes a trapping preventing portion that protrudes in a direction not parallel to the width direction.

Preferably, the second link may further include a link main body, and the link main body is rotatably connected to the middle part of the front leg and the lower part of the first link, respectively, The anti-pinch portion may extend from the link body portion.

The trapping preventing portion may include a front extending portion extending forward from the front end of the link body portion.

In addition, the trapping preventing portion may include an upward extending portion extending upward from the link body portion.

In addition, the trapping preventing portion may include a downward extending portion extending downward from the link body portion.

Preferably, the cart is provided with a first trapping prevention portion located above the link body portion, and a second trapping prevention portion located below the link body portion, separated from the first trapping prevention portion.

In addition, the link body portion may include a concave portion in a part of its profile in a side view, and the trapping preventing portion may be provided in the concave portion of the link body portion.

Preferably, the anti-pinch portion is plate-shaped.

According to the present invention, it is possible to effectively prevent the entrapment of clothing or the like.

Description of drawings

FIG. 1 : is a figure explaining one Embodiment of this invention, and is a perspective view which shows the baby carriage as an example of a stroller.

Fig. 2 is a side view of the stroller in a deployed state in which the handle is disposed at a rear position (back push position).

Figure 3 is a side view of the stroller in a folded state.

Fig. 4 is a partial side view of the stroller in a deployed state in which the handle is disposed at the front position (opposite push position).

FIG. 5 is a partial perspective view of the stroller in the unfolded state in which the handle is arranged at the rear position (back push position).

FIG. 6 is a perspective view of the second link.

Fig. 7 is a side view of the stroller in a state between an unfolded state and a folded state.

Fig. 8 is a side view of the stroller in a state between the unfolded state and the folded state.

Figure 9 is a side view of the second link.

FIG. 10 is a perspective view showing a modification of the cart.

Detailed ways

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

Hereinafter, as an example of the stroller 5, the stroller 10 used when going out with an infant will be described as an example. However, the stroller 5 of the present invention is not limited to the stroller 10, and can be widely applied to, for example, the stroller 5 as a pet stroller used when moving pets, and/or the stroller 5 as a trolley used for carrying articles, etc. The cart is propelled by the operator's hand.

1-9 is a figure for demonstrating one Embodiment of the baby carriage of this invention. 1 to 3 show the overall structure of the stroller. The stroller 10 is foldable as it is widely used (for example, Japanese Patent Application Laid-Open No. 2005-082082 and/or Japanese Patent Application Laid-Open No. 2006-117012), and can be folded from the unfolded state shown in FIGS. The folded state shown in FIG. 3 is folded and can be unfolded from the folded state to the unfolded state. In addition, in the stroller 10 of the present embodiment, by swinging the handle 15 with respect to the main body frame 12 of the stroller 10, the following two states can be obtained, that is, the operator (protector) can enter from the back of the infant. The handle 15 is held on the side to operate the stroller 10, the stroller 10 is driven so that the infant is facing forward in the traveling direction (back-push state), and the operator grasps the handle 15 from a position facing the infant's front leg. On the other hand, the stroller 10 is manipulated so that the rear leg side of the stroller 10 is forward in the traveling direction (the opposite-push state).

Here, in this specification, the terms "front", "rear", "upper", "lower", "front-rear direction", and "up-down direction" of the cart mean that when there is no special indication The "front", "rear", "up", "down", "front-rear direction", and "up-down direction" judged when the cart in the unfolded state moves forward in the back-push state. In the example shown in the figure, the terms "front", "rear", "up", "down", "front-rear direction" and "up-down direction" for the stroller mean that the stroller is used for riding, unless otherwise specified. The "front", "rear", "top", "bottom", "front-rear direction", and "up-down direction" based on the infant in the unfolded state. Specifically, the "front-rear direction" of the stroller (baby carriage) refers to the direction connecting the lower left and the upper right on the paper surface in FIG. 1 , and corresponds to the left-right direction on the paper surface in FIG. 2 . In addition, unless otherwise specified, "front" refers to the side toward which the infants and young children are seated in the illustrated example, and the lower left side of the paper in Fig. 1 and the left side of the paper in Fig. 2 are the strollers The "front side" of a (stroller). On the other hand, the "up-down direction" of a stroller (baby carriage) means a direction orthogonal to the front-rear direction and orthogonal to the ground. Therefore, when the ground contact is a horizontal plane, the "up-down direction" refers to the vertical direction. In addition, the "width direction" refers to a lateral direction, and a direction orthogonal to both the "front-back direction" and the "up-down direction".

First, the overall structure of the stroller will be described. As shown in FIG. 1 , the stroller 10 in the present embodiment has a substantially symmetrical structure as a whole about the center plane in the width direction along the front-rear direction. As shown in FIGS. 1 and 2 , the stroller 10 includes a stroller body 11 constituting a frame, a seat 90 attached to the stroller body 11 , a basket 93 , and a carport 95 . The stroller main body 11 has a main body frame 12 and a handle 15 which is swingably attached to the main body frame 12 . The main body frame 12 has a pair of front legs 22 arranged on the left and right, a pair of rear legs 24 arranged on the left and right, a pair of armrests 28 as side frame members arranged on the left and right, and a pair of first The first to third connecting rods 40 , 45 and 50 . A front wheel 23 is provided at the lower end of the front leg 22 , and a rear wheel 25 is provided at the lower end of the rear leg 24 . In addition, in the example shown in the figure, the seat plate 90s (refer FIG. 5 and FIG. 6 ) supporting the seat 90 is located between the pair of front legs 22 and between the pair of rear legs 24 . As will be described later, both side portions of the seat plate 90s constitute the second links 45 for enabling the folding operation of the stroller 5 (the baby carriage 10 ).

The upper end portion of the front leg 22 is rotatably (swingable) connected to the front portion of the armrest 28 arranged on the corresponding side (left or right). Similarly, the upper end part of the rear leg 24 is connected to the front part of the armrest 28 arrange|positioned at the corresponding side (left side or right side) so that rotation (swinging) is possible. In addition, the upper portion of the first link 40, particularly the upper end portion of the upper portion in the illustrated example, is rotatable (swingable) with the armrest 28 disposed on the corresponding side (left or right) The back end part is connected.

The left second link 45 connects the left front leg 22 and the left first link 40 . Similarly, the right second link 45 connects the right front leg 22 and the right first link 40 . Each second link 45 is rotatably connected to the middle part of the front leg 22 at the front part thereof, and is rotatably connected to the lower part of the first link 40 at the rear part, especially in the example shown in the figure The lower end portion in the lower middle portion is connected.

Next, the left third link 50 connects the left rear leg 24 and the left first link 40 . Similarly, the third link 50 on the right connects the rear leg 24 on the right and the first link 40 on the right. Each third link 50 is rotatably (swingable) connected to the middle part of the rear leg 24 at a part thereof, and is rotatably connected to the lower part of the first link 40 at the other part, especially in the figure. In the example the lower part is connected in the lower part.

As shown in FIGS. 2 and 4 , in the stroller 10 shown in the figure, when the stroller 10 in the unfolded state is viewed from the width direction, the third link 50 is connected to the first link 40 . Between the portion Pa and the connection portion Pb of the third link 50 and the rear leg 24 , there is a curved shape protruding rearward. By making the third link 50 such a shape, the rigidity of the stroller 10 can be improved. Thereby, various forces are applied to the stroller 10 when the stroller 10 is running and/or when the stroller 10 is folded or unfolded, and the stroller 10 is prevented from being deformed.

In other words, when the stroller 10 in the unfolded state is viewed from the width direction, the third link 50 has an L-shaped shape including the bent portion 53 , and includes the first portion 51 and the first portion 51 and the first portion 51 arranged to sandwich the bent portion 53 . Part II 52. Furthermore, when the stroller 10 in the unfolded state is viewed from the width direction, the bent portion 53 of the third link 50 is located at a higher position than the connecting portion Pa connecting the third link 50 and the first link 40 to the third link 50 . The line segment ls connecting the rod 50 and the connection portion Pb of the rear leg 24 is further rearward.

As shown in FIG. 5 , the illustrated third link 50 is rotatably connected to the first link 40 via the shaft member 39 along the width direction of the stroller 10 . The shaft member 39 rotatably penetrates the second link 45 and the handle 15 in addition to the third link 50 and the first link 40 rotatably. In addition, the third link 50 is connected to the rear leg 24 via a boss 59 extending in the width direction of the stroller 10 .

However, in such a stroller 5 (baby carriage 10 ), the structural unit functions as a link, and can be changed between the unfolded state and the folded state by relative rotation. In addition, when folded and/or unfolded, when the cart 5 is viewed from the side, the second link 45 moves relatively with respect to the other structural units while overlapping with many other structural units. Therefore, when folded and/or unfolded, clothes and/or blankets and the like are easily sandwiched between the second link 45 located in the approximate center of the stroller body 11 and other structural units.

In particular, in the foldable stroller 5, it is preferable that the second link 45 adjusts the seat surface according to constraints for securing the overall design of the stroller 5 and/or adjustment of the seat surface when the stroller 5 is applied to a baby carriage, for example. Bending due to height constraints. That is, as in the example shown in the figure, a part of the contour of the second link 45 in the side view further includes the concave portion 45r (see FIG. 4 ). In this case, when the cart 5 is unfolded and/or folded, clothing or the like is likely to be caught in the recessed portion 45r.

On the other hand, in the stroller 5 (baby carriage 10 ) described here, the second link 45 is configured as described below, and it is possible to effectively prevent clothes, blankets, etc. from being caught between the second link 45 and other links. between structural units, or sandwiched between a plurality of structural units other than the second link 45 .

Hereinafter, the second link 45 of the present embodiment will be described in more detail with reference to FIGS. 4 to 6 and 9 .

FIG. 6 is a perspective view for explaining the second link 45 of the present embodiment. In the example shown in FIG. 6 , the second link 45 is constituted by the side portion of a seat plate 90 s that supports the seat 90 between the pair of front legs 22 and the pair of rear legs 24 . Each of the second links 45 includes a link body portion 45b. The link main body portion 45b also functions as a link member for enabling the folding operation of the baby carriage 10 in the second link 45 . The second link 45 can be freely designed as long as it appropriately functions as the above-described link member.

In the example shown in FIG. 6 , the link body portion 45b includes a link body center portion 45c extending along the left and right side portions of the seat plate 90s, and a plate-shaped rear end attachment provided at the rear end of the link body center portion 45c. member 46b; and a plate-shaped front end mounting member 46c provided at the front end and below of the central portion 45c of the link body. In addition, the link main body portion 45b is rotatably connected to the lower portion of the first link 40 at the rear end attachment member 46b. Moreover, the link main body part 45b is connected to the intermediate part of the front leg 22 so that rotation is possible at the front-end|tip attachment member 46c.

In the example shown in FIG. 6, the link main body center part 45c is integrally formed with the seat plate 90s, and constitutes the side part of the seat plate 90s. Of course, the link main body center portion 45c may be formed separately from the seat plate 90s. Here, in the example shown in FIG. 6, from the front-end|tip of the seat plate 90s to the center part, it is flat. On the other hand, the rear portion of the seat plate 90s has a shape curved upward. The outline of the central portion 45c of the link body in a side view corresponds to the outline of the seat plate 90s in a side view. Therefore, as shown in FIG. 9 , the outline of the central portion 45c of the link body in side view extends linearly from the front end portion 45cf over the central portion, bends at the rear portion, and finally linearly extends upward. That is, the central portion 45c of the link main body has a portion of the contour in a side view, specifically, a straight portion 45s from the front end portion 45cf to the central portion. In addition, the central portion 45c of the link main body includes a curved portion 45r at a part of the contour in the side view, specifically, at a position connected to the straight portion 45s from the rear. The curved portion 45r is curved upward as it goes to the rear. As a result, the upper edge part of the curved part 45r forms the recessed part 45rx which opens upward. Moreover, in the example shown in FIG. 9, the link main body center part 45c has the rear-end part 45t at the position connected to the curved part 45r from the back. The rear end portion 45t of the central portion 45c of the link body, that is, the region between the curved portion 45r and the rear end attachment member 46b extends linearly upward.

In addition, in the example shown in figure, the linear part 45s, the curved part 45r, and the rear-end part 45t are integrally formed. In addition, in the example shown in figure, the link main body center part 45c, the rear-end attachment member 46b, and the front-end|tip attachment member 46c are integrally formed. Further, the link body portion 45b is formed by the link body center portion 45c, the rear end mounting member 46b, and the front end mounting member 46c, but as described above, the link body portion 45b supports the seat 90 as a part of the seat plate 90s. part is integrally formed.

The second link 45 further includes an anti-pinch portion 45p that protrudes in a direction not parallel to the width direction. As shown in FIGS. 5 and 6 , the illustrated entrapment preventing portion 45p is formed into a plate shape in order to avoid increasing the weight of the stroller 10 . In addition, the trapping preventing portion 45p extends from the link main body portion 45b. More specifically, in the present embodiment, the trapping preventing portion 45p includes a front extending portion 45x extending forward from the front end of the link main body portion 45b. In addition, the trapping preventing portion 45p includes an upward extending portion 45y extending upward from the link main body portion 45b. Furthermore, the trapping preventing portion 45p includes a downward extending portion 45z extending downward from the link main body portion 45b. Of course, the anti-pinch portion 45p may include only any one or any two of the front extension portion 45x, the upper extension portion 45y, and the lower extension portion 45z.

As shown in FIG. 9, the upper extension part 45y extends along the linear part 45s of the link main body center part 45c. The entire upper edge portion 45ye of the upward extension portion 45y is substantially parallel to the upper end portion 45se of the straight portion 45s.

On the other hand, the front extending portion 45x extends from the area of the corner portion 45cc that forms the front end portion 45cf of the central portion 45c of the link body and the upper end portion 45se of the straight portion 45s to the front end portion 45cf. the connection part. The edge part 45xc of the front extension part 45x is inclined with respect to the up-down direction in front of the front-end|tip part 45cf, so that it may go forward with the downward direction. Moreover, the width along the front-rear direction of the front extension part 45x, in other words, the separation length along the front-rear direction of the edge part 45xc and the front-end part 45cf becomes large as it goes downward. In addition, in the example shown in the figure, the edge part 45xc is connected to the front-end|tip part 45cf in the boundary area|region of the front-end|tip part 45cf and the front-end|tip attachment member 46c.

The edge portion 45xc has an end portion on the side of the upper extension portion 45y formed in a curved shape having a substantially circular arc shape centered on the corner portion 45cc of the central portion 45c of the link body. By forming the substantially arc-shaped curved portion, the edge portion 45xc of the front extension portion 45x and the edge portion 45ye of the upper extension portion 45y are gently connected. In this way, the front extending portion 45x and the upper extending portion 45y of the present embodiment constitute the first trapping preventing portion 45p1 above the link main body portion 45b. That is, in the example shown in the figure, the front extending portion 45x and the upper extending portion 45y constitute a part of the first pinch preventing portion 45p1 formed integrally. In addition, the illustrated first pinching prevention portion 45p1 is formed separately from the link main body portion 45b.

In addition, the shape of the edge part 45xc of the front extension part 45x on the front end part 45cf is determined so that in the middle of the unfolding operation or the folding operation of the stroller 10 shown in FIG. 3 or FIG. 7, the front end part 45cf has a shape. When at least a part of the edge portion 45xc is located behind the front leg 22, the angle θ7 (see FIG. 3 ) formed by the edge portion 45xc and the front leg 22 is always 45° or more, preferably about 90°.

Next, the downward extension portion 45z will be described. As shown in FIG. 9 , in the present embodiment, in order to avoid weight increase due to the provision of the trapping preventing portion 45p, the downward extending portion 45z is arranged only at a portion that is particularly necessary for preventing the trapping of clothes or the like. Therefore, the downward extension part 45z is arrange|positioned separately from the 1st pinch prevention part 45p1. The downward extension portion 45z is below the link main body portion 45b, and constitutes a second trapping preventing portion 45p2 separated from the first trapping preventing portion 45p1. In particular, in the example shown in the figure, the second entrapment prevention portion 45p2 is formed separately from the first entrapment prevention portion 45p1, and is formed separately from the link main body portion 45b. However, the lower extension portion 45z may be arranged continuously with the front extension portion 45x and the upper extension portion 45y.

In the example shown in FIG. 9, the downward extension portion 45z extends from the central region of the straight portion 45s to the rear end portion 45t on the lower side of the link body portion 45b that is the opposite side to the upper extension portion 45y side. extend.

The edge portion 45ze of the downwardly extending portion 45z extends along the rear end portion 45t on the rear end portion 45t of the central portion 45c of the link body. Moreover, the edge part 45ze of the downward extension part 45z goes downward from the curved part 45r to the back area of the linear part 45s, and is spaced apart from the link main body part 45b as it goes forward. That is, during this period, the width in the vertical direction of the downward extending portion 45z widens toward the front side along the link main body portion 45b. And the edge part 45ze is connected toward the edge part 45se of the lower side of the linear part 45s in the center area|region of the linear part 45s.

In addition, the shape of the edge part 45ze of the downward extension part 45z from the recessed part 45r to the rear region of the straight part 45s is determined so that in the middle of the unfolding operation or the folding operation of the stroller 10 shown in FIG. 7 , When at least a part of the downward extension portion 45z is located behind the rear leg, the angle θ4 (see FIG. 7 ) formed by the edge portion 45ze and the rear leg 24 is always 45° or more, preferably about 90°.

Returning to FIG. 1 , the main body frame 12 of the illustrated stroller 10 has, as a structural unit extending in the width direction, a footrest (front connecting rod) 32 connected between a pair of front legs 22 and a pair of rear The rear connecting rod 34 between the legs 24 . In addition, a bendable protective member 36 is detachably provided between the pair of armrests 28 .

The handle 15 is swingably connected to the main body frame 12 including the stroller main body 11 having the above structure. As shown in FIG. 1 , in the present embodiment, the handle 15 includes a pair of substantially linear linear portions 16a extending substantially parallel to each other, and an intermediate portion 16b connected between the pair of linear portions 16a, and the handle 15 as a whole has Roughly U-shaped. The handle 15 is rotatably (swingable) connected to a first link 40 corresponding to one side of both end portions of the U-shape.

In addition, as shown in FIG. 5, in the example shown in figure, the one shaft member 39 penetrates the handle 15 and the 1st link 40, and holds the handle 15 and the 1st link 40 so that rotation is possible. The shaft member 39 also penetrates the rear end plate-shaped attachment member 46b of the second link 45 and the third link 50, and holds the second link 45 and the third link 50 rotatably. That is, in the illustrated embodiment, the rotation axis (swing center) of the handle 15 with respect to the first link 40 , the rotation axis of the third link 50 and the first link 40 , and the first link 40 It is in line with the rotation axis of the second link 45 and extends in the width direction (lateral direction) of the stroller. With such a configuration, as shown in FIGS. 2 and 3 , the handle 15 swings relative to the frame body 12 , and the linear portion 16 a of the handle 15 moves along the armrest 28 on the side of the armrest 28 .

As shown in FIG. 1 , the sliding members 19 slidable with respect to the linear portion 16 a are provided on a pair of linear portions 16 a of the handle 15 that can move laterally of the armrest 28 , respectively. Each sliding member 19 is biased downward (U-shaped end portion side) on the corresponding linear portion 16a of the handle 15 by a spring (not shown) provided in the linear portion 16a. On the other hand, as shown in FIG. 2 , the stroller 10 is provided with a pair of first engaging portions (first engaging protrusions) 26 a and a pair of first engaging portions (first engaging protrusions) 26 a that are respectively engaged with the pair of sliding members 19 to restrict the rotation of the handle 15 . The second engaging portion (second engaging protrusion) 26b. The handle 15 is fixed in the front position (opposite push position) as shown by the two-dot chain line in FIG. On the other hand, the handle 15 is fixed at the rear position (back-push position) as shown by the solid line in FIG. 2 by engaging the sliding member 19 with the engaging protrusion 26b provided at the rear and engaging with each other. In the illustrated example, the first engaging protrusion 26 a is provided on the armrest 28 , and the second engaging protrusion 26 b is provided on the first link 40 .

Further, as shown in FIG. 1 , the handle 15 includes an operation member 18 slidably provided on the linear portion 16 a of the handle 15 , and an operation member 18 provided on the intermediate portion 16 b of the handle 15 so as to be remotely operable. The remote control device 18a on which the part 18 slides. As shown in FIG. 5 , in the unfolded state of the stroller 10, when the handle 15 is arranged in the rear position (the rear position), the operation member 18 on the handle 15 is slidably provided on the first link from below. The locking member 41 on the 40 abuts. Each locking member 41 faces downward (the end of the U shape) on the first link 40 by a spring (not shown) provided in the first link 40 , in other words, it faces the first link 40 and the first link 40 . The connection portion of the third link 50 is urged. In addition, when the stroller is in the unfolded state or the folded state, the locking member 41 is engaged with the third link 50 to restrict the relative rotation of the third link 50 and the first link 40 . Thereby, the stroller 10 is held in the unfolded state or the folded state.

As shown in FIGS. 1 and 2 , a seat 90 having a seat portion 91 a and a back portion 91 b is attached to the stroller body 11 including the stroller 10 having the above-described configuration. In the example shown in FIG. 6, although the seat part 91a of the seat 90 is supported by the seat plate 90s integrally formed with the 2nd link 45, it is not limited to this. For example, it may be supported by an upper connecting rod (not shown) extending between the second link 45 and/or the pair of second links 45 . On the other hand, the back portion 91b of the seat 90 is supported by a back frame (not shown) rotatably connected to, for example, the plate-shaped attachment member 46b of the second link 45 . In addition, as shown in FIGS. 1 and 2 , the stroller body 11 is further provided with a basket 93 and a carport 95 . The basket 93 is supported by, for example, the second link 45 , and the carport 95 is attached to the upper portion of the first link 40 . In addition, the seat 90, the storage basket 93, and the carport 95 are only shown in FIG. 1 and FIG. 2, and are omitted in other drawings.

As described below, the stroller 10 (the stroller main body 11 ) having the above-mentioned overall structure can be folded by rotating the respective components.

When the handle 15 is arranged at the front position (position indicated by the two-dot chain line in FIG. 2 ), first, the handle 15 is swung relative to the main body frame 12 of the stroller body 11 to move the handle 15 to the rear position (the position shown by the double-dotted line in FIG. 2 ). solid line position) move. Next, the handle 15 is fixed to the stroller 10 by engaging the sliding member 19 on the handle 15 arranged at the rear position with the second engaging portion 26b on the first link 40 of the stroller body 11 . At this time, the handle 15 swingably connected to the first link 40 at the lower end portion thereof is fixed to the first link 40 by the engagement of the sliding member 19 with the second engaging portion 26b. In addition, in the following folding operation, when viewed from the side, that is, when viewed from the width direction of the stroller 10 , the lower portion of the handle 15 performs the same operation as that of the first link 40 .

Next, by operating the remote control device 18a, the engagement between the first link 40 and the third link 50 via the locking member 41 is released. Specifically, the operation member 18 is actuated by the remote control device 18a, and at the same time, the locking member 41 on the first link 40 is actuated via the operation member 18, and the fixing of the first link 40 to the third link 50 is released. , and further release the fixation of the first connecting rod 40 relative to other structural units. It should be noted that, at this time, the stroller 10 is in the unfolded state, and at least one of the first link 40 and the third link 50 is in contact with the rear leg 24 . In the illustrated example, the lower end portion of the first link 40 is in contact with the middle portion of the rear leg 24 .

From this state, the handle 15 disposed at the rear position is temporarily pulled up rearward and upward, and then pressed downward. At this time, as described above, the first link 40 operates together with the handle 15 . As a result, the first link 40 and the third link 50 are separated from the rear leg 24 , and the third link 50 rotates clockwise relative to the rear leg 24 in FIG. 2 . Accompanying this operation, the armrest 28 and the second link 45 are rotated clockwise relative to the first link 40 in FIG. 2 . With this operation, when viewed from the width direction of the stroller (when viewed from the side), the handle 15 moves so as to approach the front legs 22 while maintaining a substantially parallel relationship with the front legs 22, and the baby in the front-rear direction moves The size of the vehicle 10 is reduced. Moreover, as shown in FIG. 3, when the stroller 10 is folded in the front-rear direction, the arrangement position of the handle 15 is lowered while the handle 15 and the front leg 22 are kept substantially parallel. As a result, not only the size in the front-rear direction of the stroller 10 but also the size in the vertical direction of the stroller 10 can be reduced.

On the other hand, in order to unfold the stroller 10 (the stroller main body 11 ) from the folded state, an operation opposite to the above-described folding operation may be performed.

Next, with reference to FIGS. 2 , 3 , 7 , and 8 , the action of the entrapment preventing portion 45p when the stroller 10 is folded from the unfolded state will be described in detail. Here, FIG. 2 is a side view showing the stroller 10 in an unfolded state, and FIG. 3 is a side view showing the stroller 10 in a folded state. 7 and 8 are side views showing the stroller 10 in the middle of a folding operation or an unfolding operation. FIG. 7 is a view showing the stroller 10 in a state closer to the folded state, and FIG. 8 is a view illustrating the stroller 10 in a state closer to the unfolded state.

As described above, when the folding operation of the stroller 10 in the unfolded state ( FIG. 2 ) is started, the third link 50 starts to rotate clockwise in FIG. 2 with respect to the rear leg 24 . Accompanying this operation, the second link 45 also starts to rotate, and transitions from the state of FIG. 2 to the state of FIG. 8 . At this time, as shown in FIG. 8 , when viewed from the side, a gap is generated in a region surrounded by the link main body portion 45 b of the second link 45 , the rear legs 24 , and the curved third link 50 protruding rearward. R1. As shown in FIGS. 7 and 8 , by rotating the second link 45 and the third link 50 close to each other, the gap R1 is reduced. And, as shown in FIG. 7, since the 2nd link 45 overlaps with the 3rd link 50 in the middle of rotation, the clearance gap R1 disappears. On the other hand, in the example shown in the figure, the second link 45 has a downward extending portion 45z extending downward from the link main body portion 45b. The downwardly extending portion 45z can at least partially overlap with the gap R1 when viewed from the side until the gap R1 shrinks until it disappears. That is, the gap R1 can be narrowed by the downward extension portion 45z. In this way, by providing the downward extension portion 45z extending downward from the link main body portion 45b, it is possible to effectively prevent clothes and the like from being caught in the gap R1.

In addition, the second link 45 and the third link 50 are further rotated to transition from the state of FIG. 8 to the state of FIG. 7 . At this time, as shown in FIGS. 7 and 8 , when viewed from the side, the gap R2 generated between the linear portion 45s of the link main body portion 45b and the rear leg 24 is reduced along with the rotation of the second link 45 . On the other hand, in the example shown in the figure, the second link 45 has an upward extension portion 45y extending upward from the link main body portion 45b. The upward extension 45y can at least partially overlap with the gap R2 when viewed from the side until the stroller 10 transitions to the folded state shown in FIG. 3 from the time the gap R2 begins to shrink. That is, the gap R2 can be narrowed by the upper extension portion 45y. Therefore, by providing the upward extension portion 45y extending upward from the link main body portion 45b, it is possible to effectively prevent clothes and the like from being caught in the gap R2.

In addition, the second link 45 and the third link 50 are further rotated to transition from the state of FIG. 7 to the state of FIG. 3 . At this time, as shown in FIGS. 7 and 3 , the gap R3 generated between the link main body portion 45b and the rear leg 24 when viewed from the side is reduced as the second link 45 and the third link 50 rotate. The downward extension 45z can at least partially overlap with the gap R3 when viewed from the side during the period from when the gap R3 begins to shrink until the stroller 10 transitions to the folded state shown in FIG. 3 . That is, the gap R3 can be narrowed by the downward extension portion 45z. In addition, the angle θ4 of the gap R4 generated between the edge portion 45ze of the downwardly extending portion 45z and the rear leg 24 is preferably larger than that generated between the rear leg 24 and the link main body portion 45b using the shape of the downwardly extending portion 45z The angle of the angle θ3 of the gap R3 can be set to an angle of 45° or more in the example shown in FIG. 7 , more preferably about 90°. Therefore, by providing the downward extension portion 45z extending downward from the link main body portion 45b, it is possible to effectively prevent clothes and the like from being caught in the gap R3 or R4.

Next, the action of the trapping preventing portion 45p when the stroller 10 is unfolded from the folded state ( FIG. 3 ) will be described.

As described above, when the unfolding operation of the stroller 10 in the folded state ( FIG. 3 ) is started, the third link 50 starts to rotate counterclockwise in FIG. 3 with respect to the rear leg 24 . Depending on the shape of the third link 50 and the like, in the folded state, a part of the third link 50 is positioned further forward than the rear leg 24, and a gap may be generated between the third link 50 and the rear leg 24 ( not shown). When the unfolding operation of the stroller 10 is started, the gap is reduced by rotating the third link 50 with respect to the rear leg 24 . And this gap disappears when the third link 30 overlaps with the rear leg 24 in the middle of the rotation. On the other hand, from the time when the gap starts to shrink until it disappears, when viewed from the side, the downwardly extending portion 45z overlaps with the gap at least partially, so that the gap can be narrowed. Therefore, by providing the downward extension portion 45z extending downward from the link main body portion 45b, it is possible to effectively prevent clothes and the like from being caught in the gap.

With the rotation of the third link 50 , the second link 45 rotates counterclockwise in FIG. 3 relative to the front leg 22 , and transitions from the state shown in FIG. 3 to the state shown in FIG. 7 . As shown in FIG. 3 , in the folded state, the concave portion 45r of the link body portion 45b is positioned further forward than the rear leg 24 , and a gap R5 is generated between the link body portion 45b and the rear leg 24 . As the second link 45 rotates, the gap R5 is reduced. Then, as shown in FIG. 7 , in the middle of the rotation, the recessed portion 45r of the link main body portion 45b moves rearward with respect to the rear leg 24, so that the gap R5 disappears. When the gap R5 begins to shrink and disappears, the upper extending portion 45y, in particular, the portion of the upper extending portion 45y arranged in the recess 45r can at least partially overlap with the gap R5 when viewed from the side. That is, the gap R5 can be narrowed by using the portion of the upper extending portion 45y, in particular, the upper extending portion 45y arranged in the recessed portion 45r. Therefore, by providing the upward extension portion 45y extending upward from the link main body portion 45b, it is possible to effectively prevent clothes and the like from being caught in the gap R5.

In addition, as shown in FIG. 3 , in the folded state, a gap R6 is generated between the front end portion 45cf of the link main body portion 45b and the front leg 22 . The gap R6 decreases with the rotation of the second link 45 . Then, as shown in FIG. 8 , in the middle of the rotation, the front end portion 45cf moves forward with respect to the front leg 22 , so that the gap R6 disappears. From the time when the gap R6 begins to shrink until it disappears, the front extending portion 45x can at least partially overlap with the gap R6 when viewed from the side. That is, the gap R6 can be narrowed by the forward extension portion 45x. In addition, the angle θ7 of the gap R7 generated between the edge portion 45xc of the front extension portion 45x and the front leg 22 is preferably larger than that generated between the front leg 22 and the link main body portion 45b through the shape of the front extension portion 45x. The angle of the angle θ6 of the gap R6 can be set to an angle of 45° or more in the example shown in FIG. 3 , and is more preferably set to about 90°. Therefore, by providing the forward extension portion 45x extending forward from the link main body portion 45b, it is possible to effectively prevent clothes and the like from being caught in the gap R6 or R7.

In the above-described embodiment, the stroller 5 is a stroller 5 (baby stroller 10) that can be folded from the unfolded state to the folded state, and includes: side frame members 28; The first link 40 is connected to the rear part of the side frame member in a rotatable manner; the second link 45 is rotatably connected to the side frame member 28, respectively. The middle part of the front leg 22 and the lower part of the first link 40 are connected; and the third link 50 is rotatably connected to the middle part of the rear leg 24 and the lower part of the first link 40 respectively. Partial link. In such a stroller 5 (baby carriage 10 ), the structural unit functions as a link, and can be deformed between an unfolded state and a folded state by relative rotation. In addition, when the second link 45 is folded and/or unfolded, when the cart 5 is viewed from the side, it overlaps with many other structural units and moves relatively with respect to the other structural units. That is, when folded and/or unfolded, clothes and/or blankets are easily sandwiched between the second link 45 and other structural units. On the other hand, in the above-described embodiment, the second link 45 rotatably connected to the middle portion of the front leg 22 and the lower portion of the first link 40 includes protrusions in a direction not parallel to the width direction. The anti-pinch part 45p. The gap between the second link 45 and other structural units can be reduced by providing the second link 45 with the anti-pinch portion 45p. Thereby, it is possible to effectively prevent clothes and the like from being caught between the second link 45 and other structural units when the cart 5 is unfolded and/or folded.

In addition, in the above-described embodiment, the second link 45 further includes a link main body 45b, which is rotatably connected to the middle part of the front leg 22 and the lower part of the first link 40, respectively. Partially connected, the trapping preventing portion 45p extends from the link main body portion 45b. According to this structure, the link main body part 45b is suitably designed as a link member which can perform the folding operation of the cart 5, and it can prevent effectively that a clothing etc. are caught between the 2nd link 45 and other structural units.

Furthermore, in the above-described one embodiment, the entrapment preventing portion 45p includes the forward extension portion 45x that extends forward from the front end of the link main body portion 45b. According to such a stroller 5 (baby stroller 10 ), it is possible to effectively prevent the second link 45 and the front legs 22 from being caught between the second links 45 and the front legs 22 when the stroller 5 is unfolded.

In addition, in the above-described one embodiment, the trapping preventing portion 45p includes the upper extending portion 45y extending upward from the link main body portion 45b. According to such a stroller 5 (baby stroller 10 ), when the stroller 5 is unfolded and/or folded, the second link 45 and the rear legs 24 can be effectively prevented from being caught.

Furthermore, in the above-described one embodiment, the entrapment preventing portion 45p includes the downward extending portion 45z extending downward from the link body. According to such a stroller 5 (baby stroller 10 ), when the stroller 5 is unfolded and/or folded, it is possible to effectively prevent the second link 45 and the third link 50 from being caught in, and/or the second link Possible pinching of rod 45 with rear leg 24 . Furthermore, when the cart 5 is unfolded, the third link 50 and the rear legs 24 can be effectively prevented from being pinched.

Furthermore, in the above-described embodiment, the first trapping prevention portion 45p1 located above the link body portion 45b and the second trapping prevention portion 45p1 separated from the first trapping prevention portion 45p1 and located below the link body portion 45b are provided Enter the Ministry. According to such a stroller 5 (baby stroller 10 ), it is possible to effectively prevent the increase in weight by making the anti-entrapment portion to the minimum required, and to effectively prevent the second link when the stroller 5 is unfolded and/or folded. 45 and other structural units in various ways.

Furthermore, in the above-described one embodiment, a part of the outline of the link main body portion 45b in the side view includes the concave portion 45r. In addition, the trapping preventing portion 45p is provided in the concave portion 45r of the link main body portion 45b. When the link main body portion 45b includes the concave portion 45r in its outline, the concave portion 45r tends to trap clothes or the like when the cart 5 is unfolded and/or folded. The recessed part 45r of the lever main-body part 45b can prevent the pinching in the recessed part 45r effectively. On the other hand, the second link 45 is preferably curved due to the overall design of the stroller 5 and/or the relationship with the height of the seat surface when the stroller 5 is applied to a stroller, for example. That is, by providing the anti-pinch portion 45p in the recessed portion 45r of the link main body portion 45b, a sufficient degree of freedom can be ensured in the design of the second link 45, and pinch-in can be prevented.

In addition, in the above-mentioned one embodiment, the trapping preventing portion 45p has a plate shape. According to such a stroller 5 (baby carriage 10 ), it is possible to effectively prevent an increase in weight due to the provision of the trapping preventing member, and to effectively prevent trapping.

In addition, various changes can be added to the said embodiment within the range of the summary of this invention.

Hereinafter, an example of the change will be described.

For example, the overall structure of the stroller 5 (baby carriage 10 ) described in the above embodiment is merely an example. For example, members extending in the width direction of the stroller 5 (the stroller 10 ) (for example, the footrest 32 and/or the rear side link 34 ) can be folded in the front-rear direction (the state of FIG. 3 ) in the A line juxtaposed contains hinges capable of bending. According to such a modification, the stroller 5 (baby stroller 10 ) in the state folded in the front-rear direction can be further bent and folded by the hinge, and the size of the stroller 5 (baby stroller 10 ) in the width direction can be reduced.

In addition, in the above-mentioned embodiment, the following example was described in which the handle 15 is provided separately from the first link 40, and the handle 15 is configured to be swingable with respect to the frame body 12 of the stroller 5 (baby carriage 10), But not limited to this. For example, as shown in FIG. 10 , the handle 15 may be fixed to the rear position so as not to swing from the rear position. In the example shown in FIG. 10, a pair of 1st link 40 is comprised by the part equivalent to the end part of the U-shape including the handle|steering-wheel 15 of the U shape. In other words, the first link 40 further extends beyond the joint with the armrest 28 , and constitutes a part of the handle 15 . In such a stroller 5 (baby carriage 10 ), the second link 45 is provided with the trapping preventing portion 45p in the same manner as the second link of the above-described embodiment, so that the same functions and effects as those of the above-described embodiment can be obtained. It should be noted that, in the example shown in FIG. 10 , the lock member 41 is slidably provided on the first link 40 , and the lock member 41 can be remotely operated by the remote operation device 18 a of the handle 15 . .

Moreover, in the above-mentioned embodiment, the example in which the third link 50 , the first link 40 and the second link 45 are arranged in this order from the outer side in the width direction along the width direction of the stroller 5 (baby carriage 10 ) is shown, but it is not Limited to this, for example, the first link 40 , the third link 50 , and the second link 45 may be arranged from the outer side in the width direction or the inner side in the width direction in the order of the first link 40 , the third link 50 , and the second link 45 , or the first link 40 and the second link 45 may be arranged The order of the third link 50 is arranged from the outer side in the width direction or the inner side in the width direction.

Furthermore, in the above-described embodiment, the rotation axis between the third link 50 and the first link 40 and the rotation axis between the first link 40 and the second link 45 and the second link 45 are shown. The rotation axis between the third link 50 and the rotation axis of the handle 15 relative to the main body frame 12 is aligned on a straight line, but it is not limited to this. The rotation axis between the third link 50 and the first link 40 may be the same as the rotation axis between the first link 40 and the second link 45 , the rotation between the second link 45 and the third link 50 At least any one of the axis and the rotation axis of the handle 15 relative to the main body frame 12 is not aligned on a straight line, and may not be parallel to at least any of them.

Furthermore, as explained at the beginning, the stroller 5 described here is not limited to the stroller 10, and can be widely used, for example, as the stroller 5 as a pet stroller used when moving pets, and/or as a transport item The cart 5 and the like of the cart are configured as carts propelled by the operator's hand.

In addition, although some modification examples of the said embodiment were demonstrated above, it is needless to say that a plurality of modification examples can be appropriately combined and applied.

Claims (12)

1. A cart capable of being folded from an unfolded state to a folded state, comprising:

a side frame member;

front and rear legs, upper parts of which are rotatably connected to the side frame members;

a first link rotatably coupled to a rear portion of the side frame member;

a second link rotatably connected to an intermediate portion of the front leg and a lower portion of the first link, respectively; and

a third link rotatably connected to an intermediate portion of the rear leg and a lower portion of the first link, respectively,

the second link includes a link main body portion rotatably connected to the middle portion of the front leg and the lower portion of the first link, and an anti-pinching portion extending from the link main body portion in a direction not parallel to the width direction,

the anti-clamping part comprises a front extending part extending forwards from the front end part of the connecting rod main body part,

the edge portion of the forward extending portion includes a portion that faces forward in a downward direction in front of the front end portion of the link main body portion.

2. A trolley as claimed in claim 1,

in a case where at least a part of the front end portion of the link main body portion is positioned rearward of the front leg during the unfolding operation or the folding operation of the cart, an angle formed between the edge portion of the front extension portion and the front leg is always 45 ° or more.

3. A trolley as claimed in claim 1,

the anti-pinching portion includes an upward extending portion that extends upward from the link body portion.

4. A trolley as claimed in claim 1,

the anti-pinching portion includes a downward extending portion that extends downward from the link body portion.

5. A trolley as claimed in claim 3,

a part of the profile of the link main body portion in a side view thereof includes a recess,

the upper extending portion is provided in the concave portion of the link main body portion.

6. A trolley as claimed in claim 1,

the anti-clamping part is plate-shaped.

7. A cart capable of being folded from an unfolded state to a folded state, comprising:

a side frame member;

front and rear legs, upper parts of which are rotatably connected to the side frame members;

a first link rotatably coupled to a rear portion of the side frame member;

a second link rotatably connected to an intermediate portion of the front leg and a lower portion of the first link, respectively; and

a third link rotatably connected to an intermediate portion of the rear leg and a lower portion of the first link, respectively,

the second link includes a link main body portion rotatably connected to the middle portion of the front leg and the lower portion of the first link, and an anti-pinching portion extending from the link main body portion in a direction not parallel to the width direction,

the anti-clamping part comprises a lower extending part extending downwards from the connecting rod main body part,

the edge portion of the lower extending portion includes a portion that faces downward toward the front.

8. A trolley as claimed in claim 7,

the anti-pinching portion includes a forward extending portion that extends forward from a front end of the link body portion.

9. A trolley as claimed in claim 7,

the anti-pinching portion includes an upward extending portion that extends upward from the link body portion.

10. A trolley as claimed in claim 7,

in a case where at least a part of the downward extending portion is located rearward of the rear leg during the unfolding operation or the folding operation of the cart, an angle formed by a portion of the edge portion of the downward extending portion that faces downward as it faces forward and the rear leg is always 45 ° or more.

11. A trolley as claimed in claim 9,

a part of the profile of the link main body portion in a side view thereof includes a recess,

the upper extending portion is provided in the concave portion of the link main body portion.

12. A trolley as claimed in claim 7,

the anti-clamping part is plate-shaped.

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