JP5944141B2 - stroller - Google Patents

Description

  The present invention relates to a foldable baby stroller that can be folded from an unfolded state to a folded state, and more particularly to a stiff baby stroller.

  Conventionally, a stroller for carrying an infant is known. As disclosed in Patent Document 1, most of the baby strollers used today are configured such that components are rotatably connected and a link material is appropriately incorporated, and the stroller can be folded from an unfolded state to a folded state. It is configured to be possible. The stroller disclosed in Patent Document 1 can be folded so that the front leg and the handle are close to each other in a side view, and the size in the front-rear direction of the stroller can be reduced by folding.

JP 2011-063097 A

  However, if the components of the stroller are pivotably connected, the stroller can be folded to a size suitable for storage or the like, but the stroller rigidity is reduced. When the stroller rigidity decreases, the stroller during running or folding operation is distorted. If distortion occurs in the traveling stroller, the controllability of the stroller deteriorates. Similarly, if distortion occurs in the stroller during folding operation, the stroller cannot be folded smoothly.

  The present invention has been made in consideration of such points, and an object thereof is to improve the rigidity of a foldable baby stroller.

The stroller according to the present invention comprises:
A stroller that can be folded from an unfolded state to a folded state,
Armrests,
A front leg and a rear leg, the upper part of which is rotatably connected to the armrest;
A first link rotatably connected to a rear portion of the armrest;
A second link rotatably connected to an intermediate part of the front leg and a lower part of the first link;
A third link rotatably connected to the intermediate part of the rear leg and the lower part of the first link,
When the stroller in the unfolded state is observed from the width direction, the third link has a bent shape that protrudes rearward between the connection point with the first link and the connection point with the rear leg. ing.

  In the stroller according to the present invention, when the stroller in an unfolded state is observed from the width direction, the third link extends rearward from a connecting portion with the first link, and then bends, You may make it extend below to this connection location.

  In the stroller according to the present invention, a gap surrounded by the third link and the rear leg may be formed when the stroller in the unfolded state is observed from the width direction.

  In the stroller according to the present invention, when the stroller in the deployed state is in contact with the rear leg and the stroller in the deployed state is observed from the width direction, the third link is connected to the third link from the connecting portion of the first link and the third link. The first link and the precursor rear leg up to the connection point between the first link and the rear leg, and the third link from the connection point between the first link and the third link to the connection point between the third link and the rear leg; A gap may be formed between the two.

  In the stroller according to the present invention, the third link includes a link main body portion pivotally attached to the first link, and a boss portion extending in a width direction of the stroller between the link main body portion and the rear leg. The third link may be pivotally attached to the rear leg at the boss portion. In the stroller according to the present invention, the thickness of the link main body portion along the width direction of the stroller at the connection portion to the first link is the length of the boss portion along the width direction of the stroller, and the boss portion. May be substantially the same as the sum of the thickness of the link main body along the width direction of the stroller at the place where the

  The stroller according to the present invention further includes a handle pivotably connected to the first link, and the third link is disposed between the first link and the handle in the width direction of the stroller. The thickness of the third link along the width direction of the stroller at the connection point to the first link is substantially the same as the width of the gap between the first link and the handle along the width direction of the stroller. It may be made to become.

  In the stroller according to the present invention, when the stroller in a folded state is observed from the width direction, a portion from the bent portion of the third link to the connecting portion to the rear leg extends along the rear leg. May be.

  The stroller according to the present invention may further include a handle that is swingably connected to the first link. Alternatively, in the stroller according to the present invention, the first link may extend upward to form a handle.

  According to the present invention, the rigidity of the stroller can be improved by the third link that functions as a link member for enabling the stroller to be folded.

FIG. 1 is a perspective view showing a stroller in an unfolded state, for explaining an embodiment of the present invention. FIG. 2 is a side view showing the stroller in the unfolded state in which the handle is disposed at the rear position (rear pushing position). FIG. 3 is a side view showing the stroller in a folded state. FIG. 4 is a partial side view showing the stroller in the unfolded state in which the handle is disposed at the front position (face-to-face pressing position). FIG. 5 is a partial perspective view showing the stroller in the unfolded state in which the handle is disposed at the rear position (rear pushing position). FIG. 6 is a partial perspective view showing the stroller in a folded state. FIG. 7 is a perspective view corresponding to FIG. 1 and showing a modification of the stroller.

  FIGS. 1-6 is a figure for demonstrating one Embodiment of the baby stroller by this invention. Among these, the whole structure of the stroller is shown in FIGS. The baby stroller 10 is configured to be foldable so as to be widely used (for example, Japanese Patent Application Laid-Open No. 2005-082082 and Japanese Patent Application Laid-Open No. 2006-1117012), and the stroller 10 can be folded from the expanded state illustrated in FIGS. It can be folded into the folded state shown in FIG. 3 and can be unfolded from the folded state to the unfolded state. In addition, in the stroller 10 according to the present embodiment, the operator (guardian) grasps the handle 15 from the back side of the infant by swinging the handle 15 with respect to the main body frame 12 of the stroller 10, so that the stroller 10 The baby stroller 10 is driven so that the infant faces the front in the traveling direction, and the operator grips the handle 15 from the position on the front leg side facing the baby and steers the baby stroller 10. It is possible to run the stroller 10 such that the rear leg side of the vehicle 10 is in the forward direction.

  Here, in the present specification, the terms “front”, “rear”, “up”, “lower”, “front / rear direction”, and “up / down direction” with respect to the baby stroller are in an unfolded state unless otherwise specified. It means “front”, “rear”, “upper”, “lower”, “front-rear direction”, and “up-down direction” based on an infant riding in a stroller 10. More specifically, the “front-rear direction” of the stroller 10 is a direction connecting the lower left and upper right of the paper surface in FIG. 1 and corresponds to the left-right direction of the paper surface in FIG. Unless otherwise specified, “front” refers to the side on which the infant who rides faces, and the lower left side of the paper surface in FIG. 1 and the left side of the paper surface in FIG. On the other hand, the “vertical direction” of the stroller 10 is a direction orthogonal to the front-rear direction and orthogonal to the ground plane. Therefore, when the ground contact surface is a horizontal plane, the “vertical direction” refers to the vertical direction. Further, the “width direction” is a horizontal direction, and is a direction orthogonal to both the “front-rear direction” and the “up-down direction”.

  First, the overall structure of the stroller will be described. As shown in FIG. 1, the stroller 10 according to the present embodiment is generally symmetric with respect to 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 car 93, and a hood 95. The stroller body 11 includes a body frame 12 and a handle 15 attached to the body frame 12 so as to be swingable. The main body frame 12 includes a pair of front legs 22 arranged on the left and right sides, a pair of rear legs 24 arranged on the left and right sides, a pair of armrests 28 arranged on the left and right sides, and a pair of left and right sides, respectively. First to third links 40, 45, 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.

  The upper end portion of the front leg 22 is connected to the front portion of the armrest 28 disposed on the corresponding side (left side or right side) so as to be rotatable (swingable). Similarly, the upper end portion of the rear leg 24 is connected to the front portion of the armrest 28 disposed on the corresponding side (left side or right side) so as to be rotatable (swingable). Further, the upper portion of the first link 40, in particular, the upper end portion of the upper portion in the illustrated example, can be rotated (swingable) to the rear end portion of the armrest 28 disposed on the corresponding side (left side or right side). )It is connected to the.

  The second link 45 on the left side connects the left front leg 22 and the first link 40 on the left side, and the second link 45 on the right side connects the right front leg 22 and the first link 40 on the right side. Each second link 45 is pivotally connected at its front part to the middle part of the front leg 22, and its rear part is rotated to the lower part of the first link 40, particularly to the lower end part of the lower part in the illustrated example. Connected movably. In the illustrated example, the second link 45 includes a metal main body bar 46a, a plate-like attachment member 46b provided at the rear end of the main body bar 46a, and a cover member 46c provided at the front end of the main body bar 46a. And have. The second link 45 is rotatably connected to the first link 50 at the plate-like attachment member 46b, and is rotatably connected to the front leg 22 at the cover member 46c.

  The left third link 50 connects the left rear leg 24 and the left first link 40, and the right third link 50 connects the right rear leg 24 and the right first link 40. doing. Each third link 50 is pivotally connected to a middle portion of the rear leg 24 at a part thereof, and is connected to the lower part of the first link 40 at the other part, in particular, the lower part in the illustrated example. It is connected to the lower end portion of the pivotably. As shown well in FIGS. 2 and 4, when the stroller 10 in the unfolded state is observed from the width direction, the third link 50 is connected to the connection point Pa between the first link 40 and the rear leg 24. Between the connection location Pb, it has the bent shape which protrudes back. The third link 50 will be described in detail later.

  Furthermore, the main body frame 12 of the stroller 10 according to the present embodiment includes, as constituent elements extending in the width direction, a footrest (front connection bar) 32 that connects the pair of front legs 22 and an upper side that connects the pair of second links 45. A connection bar (not shown) and a rear connection bar 34 for connecting the pair of rear legs 24 are provided. A bendable guard member 36 is detachably provided between the pair of armrests 28.

  A handle 15 is swingably connected to the main body frame 12 of the stroller main body 11 having the above-described configuration. As shown in FIG. 1, in the present embodiment, the handle 15 includes a pair of substantially straight straight portions 16 a that extend substantially parallel to each other, and an intermediate portion 16 b that connects the pair of straight portions 16 a. It has a substantially U-shape as a whole. The handle | steering-wheel 15 is connected with respect to the 1st link 40 of the side which respond | corresponds to the both ends of U character so that rotation is possible.

  In the illustrated embodiment, a single shaft member 39 penetrates the handle 15 and the first link 40 and holds them rotatably. The shaft member 39 also passes through the plate-like attachment member 46b and the third link 50 of the second link 45, and holds the second link 45 and the third link 50 so as to be rotatable. In other words, in the illustrated embodiment, the rotation axis (swing center) of the handle 15 with respect to the first link 50 is the rotation axis of the third link 50 and the first link 40 and the first link. 40 and the second link 45 coincide with the rotation axis, and extend in the width direction (lateral direction) of the stroller. With such a configuration, as shown in FIGS. 2 and 3, the handle 15 swings with respect to the frame body 12, and the straight portion 16 a of the handle 15 moves along the armrest 28 on the side of the armrest 28. It becomes like this.

  On the pair of straight portions 16a of the handle 15 that can move to the side of the armrest 28, sliding members 19 that can slide with respect to the straight portions 16a are provided. Each sliding member 19 is biased downward (toward the end of the U-shape) by a spring (not shown) provided in the linear portion 16a on the corresponding linear portion 16a of the handle 15. ing. On the other hand, as shown in FIG. 2, the stroller 10 includes a pair of first engagement portions (first engagement protrusions) 26 a that respectively engage with the pair of sliding members 19 and restrict the rotation of the handle 15. A pair of second engagement portions (second engagement protrusions) 26b are provided. When the first engaging protrusion 26a provided on the front and the sliding member 19 are engaged and locked to each other, the handle 15 is moved to the front position (face-to-face pressing position) as shown by a two-dot chain line in FIG. Fixed to. On the other hand, the engagement protrusion 26b provided on the rear side and the sliding member 19 are engaged and locked to each other, so that the handle 15 is fixed at the rear position (rear pushing position) as shown by the solid line in FIG. Is done. In the illustrated example, the first engagement protrusion 26 a is provided on the armrest 28, and the second engagement protrusion 26 b is provided on the first link 40.

  Further, the handle 15 includes an operation member 18 slidably provided on the straight portion 16a, a remote operation device 18a provided on the intermediate portion 16a and capable of remotely controlling the sliding of the slide member 18, have. When the handle 15 is disposed at the rear position (back position) in the stroller 10 in the unfolded state, the sliding member 18 on the handle 15 is lowered below the lock member 41 slidably provided on the first link 40. Will come into contact. Each lock member 41 is moved downward (toward 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, the first link. It is urged toward the connecting portion between 40 and the third link 50. When the stroller is in the deployed state or the folded state, the lock member 41 engages with the third link 50 and restrains the relative rotation between 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 91a and a back portion 91b is attached to the stroller body 11 of the stroller 10 having the above-described configuration. The seat portion 91a of the seat 90 is supported by, for example, an upper connection bar (not shown) extending between the second link 45 and the pair of second links 45. On the other hand, the back portion 91b of the seat 90 is supported by, for example, a back frame (not shown) rotatably connected to the plate-like attachment member 46b of the second link 45. As shown in FIGS. 1 and 2, the stroller body 11 is further provided with a car 93 and a hood 95. The car 93 is supported by, for example, the second link 45, and the hood 95 is attached to the upper portion of the first link 40. The seat 90, the car 93, and the hood 95 are shown only in FIGS. 1 and 2, and are omitted in other drawings.

  The stroller 10 (stroller body 11) having the overall configuration as described above can be folded by rotating the respective constituent members with each other as follows.

  When the handle 15 is arranged at the front position (the position of the two-dot chain line in FIG. 2), first, the handle 15 is swung with respect to the main body frame 12 of the stroller body 11, and the handle 15 is moved to the rear position ( The position is moved to the position of the solid line in FIG. Then, the handle 15 is fixed to the stroller 10 by the engagement between the sliding member 19 on the handle 15 disposed at the rear position and the second engaging portion 26 b on the first link 40 of the stroller body 11. At this time, the handle 15 that is 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 and the second engagement portion 26b. It becomes like this. Then, during 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 the first link 40.

  Next, by operating the remote control device 18a, the engagement between the first link 40 and the second link 45 via the lock member 41 is released. Specifically, the sliding member 18 is operated by the remote operation device 18a, and at the same time, the lock member 41 on the first link 40 is operated via the sliding member 18, and the first link 40 with respect to the third link 50 is operated. The fixing and further the fixing to the other components of the first link 40 are released. At this time, the stroller 10 is in an 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 45 is in contact with the intermediate portion of the rear leg 24.

  From this state, the handle 15 disposed at the rear position is once pulled upward and then pushed downward. At this time, as described above, the first link 40 operates together with the handle 15. Thus, the first link 40 and the third link 45 are separated from the rear leg 24, and the third link 50 rotates in the clockwise direction in FIG. With this operation, the armrest 28 and the second link 45 are rotated clockwise in FIG. 2 with respect to the first link 40. By such an operation, when observed from the width direction of the stroller (in side view), the handle 15 moves so as to approach the front leg 22 while maintaining a substantially parallel relationship with the front leg 22, and the stroller 10 in the front-rear direction is moved. Dimensions are reduced. As shown in FIG. 3, when the stroller 10 is folded in the front-rear direction, the position of the handle 15 is lowered while the handle 15 and the front leg 22 are kept substantially parallel to each other. As a result, not only the size of the stroller 10 in the front-rear direction but also the size of the stroller 10 in the up-down direction can be reduced.

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

  By the way, in the stroller in which the constituent elements are rotatably connected, the rigidity is lowered, and distortion may occur when an external force is applied during traveling, folding operation, unfolding operation, or the like. In particular, when driving the stroller, the operator (guardian) operates the stroller by gripping the handle and also operates the stroller 10 by holding the handle and folding the stroller. Therefore, it becomes easy to apply the force from the operator through the handle in the vicinity of the connection portion between the handle and the other components. Further, in the vicinity of the connection portion between the handle and other components, as in the stroller described in the present embodiment, many components (link materials) tend to be connected. Misalignment between components, which is a cause of excessive distortion, and twist are likely to occur. When distortion occurs in the stroller, the maneuverability of the stroller deteriorates, and the stroller cannot be folded and unfolded smoothly.

  On the other hand, in the stroller described here, the third link 50 is configured as will be described next, and the rigidity of the stroller 10 is improved and distortion of the stroller 10 is effectively suppressed. can do.

  First, as clearly shown in FIG. 4, when the stroller 10 in the unfolded state is observed from the width direction, the third link 50 is connected to the connection portion Pa between the first link 40 and the rear leg 24. It has a bent shape that protrudes backward between the portion Pb. In other words, when the stroller 10 in the unfolded state is observed from the width direction, the third link 50 is formed in an L shape including the bent portion 53, and the first portion disposed with the bent portion 53 interposed therebetween. 51 and a second portion 52. When the stroller 10 in the deployed state is observed from the width direction, the bent portion 53 of the third link 50 is connected to the connection portion Pa of the third link 50 and the first link 40 and the third link 50 and the rear leg 24. It is located behind the line segment that connects the connection points Pb.

  According to such a configuration, the force applied to the connection point Pa between the first link 40 and the third link 50 can be received from the front by the rear leg 24 and can also be received from the rear by the third link 50. . In particular, regardless of the direction of the force applied to the connection point Pa between the first link 40 and the third link 50, one of the rear leg 24 and the third link 50 receives a compressive force and the other receives a tensile force. . In other words, it is possible not only to receive the force in a distributed manner but also to receive the force in a stable manner, whereby various forces are applied to the stroller 10 when the stroller 10 is running or when the stroller 10 is folded or unfolded. Even if added, the generation of distortion to the stroller 10 can be effectively suppressed. Thus, if the stroller 10 is improved in rigidity, the maneuverability when the stroller 10 is pushed to run is improved, and similarly, the operability when the stroller 10 is folded and unfolded is improved.

  Here, at the connection point Pa between the first link 40 and the third link 50, the force applied to the stroller 10 by the operator via the handle 15, for example, the force applied to the stroller 10 when the stroller 10 is run. The force applied to the baby stroller 10 when the baby stroller 10 is folded is a place where the force is easily applied intensively. In particular, as in the present embodiment, when the handle 15 is connected to the first link 40 and the third link 50 by the shaft member 39 for pivotally attaching the first link 40 and the third link 50. First, the force via the handle 15 is intensively applied to the connection point Pa between the first link 40 and the third link 50. Therefore, according to the 3rd link 50, generation | occurrence | production of the distortion of the baby stroller 10 resulting from the force added via the handle | steering wheel 15 can be suppressed effectively, and the operator of the baby stroller 10 can control directly. An improvement in operability can be felt.

  In addition, as disclosed in Patent Document 1, conventionally, there has been a link member extending along the rear leg in the unfolded state, but when such a conventional link member is used, the direction of the force applied to the handle In response to this, a large distortion occurred in the stroller. According to the stroller 10 according to the present embodiment described here, the rigidity can be greatly improved as compared with the conventional stroller, and the maneuverability and operability of the stroller 10 can be remarkably improved. .

  As shown in FIG. 4, when the stroller 10 in the unfolded state is observed from the width direction, the third link 50 extends backward from the connection point Pa with the first link 40. Then, it bends and extends downward to the connection point Pb with the rear leg 24. In other words, the first portion 51 of the third link 50 including the connection point Pa between the first link 40 and the third link 50 extends rearward from the connection point Pa, and the third link 50 and the rear leg 24 The second portion 52 of the third link 50 including the connecting point Pb extends upward from the connecting point Pb. According to such a configuration, the force applied rearward to the connection point Pa between the first link 40 and the third link 50 can be more stably received by the third link 50, and such a force It is possible to effectively prevent the occurrence of distortion due to.

  Furthermore, as shown in FIG. 4, when the stroller 10 in the unfolded state is observed from the width direction, a gap S is formed between the third link 50 and the rear leg 24. As shown in FIG. 4, when the stroller 10 in the unfolded state is observed from the width direction, the gap S is surrounded by the third link 50 and the rear leg 24. According to such a configuration, the force applied to the connection point Pa between the first link 40 and the third link 50 can be more effectively distributed and received. As a result, occurrence of distortion in the stroller 10 can be extremely effectively prevented, and the rigidity of the stroller 10 can be improved.

  In particular, in the present embodiment, the lower end region of the first link 40 comes into contact with the rear leg 24 in the deployed state. More specifically, when the stroller 10 in the unfolded state is observed from the width direction, the gap S is changed from the connection point Pa between the first link 40 and the third link 50 to the third link 50 and the rear leg. The first link 40 and the rear leg 24 up to the connection point Pb with the second link 24, and the third link from the connection point Pa between the first link 40 and the third link 50 to the connection point Pb between the third link 50 and the rear leg 24. It is formed between the links 50. According to such a configuration, the force applied to the connection point Pa between the first link 40 and the third link 50 can be more reliably distributed and received, which is extremely effective in improving the rigidity of the stroller 10. Convenient to.

  Further, as well shown in FIGS. 5 and 6, the third link 50 includes a link main body 50 pivotally attached to the first link 40, and a stroller between the link main body 55 and the rear leg 24. And a boss portion (projecting portion) 59 extending in the width direction. The third link 50 is pivotally attached to the rear leg 24 by a boss portion 59, and the boss portion 59 extends in parallel with the rotation axis with respect to the rear leg 24 of the third link 50. That is, since the third link 50 is connected to the rear leg 24 via the boss portion 59 extending in the width direction of the stroller 10, the link main body portion 55 of the third link 50 extends along the width direction of the stroller 10. It is separated from the rear leg 24. According to such a configuration, it is possible to effectively prevent the rotation axis with respect to the rear leg 24 of the third link 50 from being inclined and the occurrence of distortion in the width direction of the stroller 10. That is, the stroller 10 is provided with excellent rigidity against the external force in the width direction of the stroller 10.

  Further, as shown in FIGS. 5 and 6, the thickness of the link main body portion 55 along the width direction of the stroller 10 at the connection point Pa to the first link 40 is equal to the boss portion 59 along the width direction of the stroller 10. And the total thickness of the link main body 55 along the width direction of the stroller 10 at the location where the boss portion 59 is provided. According to such a configuration, the occurrence of distortion in the width direction of the stroller 10 due to the external force applied from the handle 15 can be extremely effectively prevented.

  In addition, in the present embodiment, as described above, the handle 50 is swingably connected to the first link 40, and the third link 50 is the first link 40 in the width direction of the stroller 10. And the handle 50. And the thickness of the 3rd link 50 along the width direction of the stroller 10 in the connection location Pa to the 1st link 40 is the width | variety of the clearance gap between the 1st link 40 and the handle | steering-wheel 15 along the width direction of the stroller 10. It is almost the same. According to such a configuration, the third link 50 that can contribute to improving the rigidity of the stroller 10 can smoothly rotate with respect to both the first link 40 and the rear leg 24. In addition, the stroller 10 can be effectively prevented from being distorted so that the handle 15 is inclined from the first link 40.

  Furthermore, as shown in FIG. 6, when the stroller 10 in the folded state is observed from the width direction, the portion from the bent portion of the third link 50 to the connecting portion Pb to the rear leg 24, that is, the third link The second portion 52 of the 50 extends along the rear leg 24. According to such a configuration, it is possible to prevent the third link 50 that can contribute to improving the rigidity of the stroller from protruding from the stroller 10 in the folded state. In other words, the size of the stroller 10 folded for the third link 50 can be prevented from increasing in size, and the third link 50 can be harmonized with the folded stroller 10, thereby improving the design. Excellent.

  As described above, according to the present embodiment, the rigidity of the stroller 10 can be improved by the third link 50. The third link 50 is a member that functions as a link material for enabling the stroller 10 to be folded. That is, according to the present embodiment, the rigidity of the stroller 10 can be effectively improved without increasing the number of parts of the stroller 10.

  Various modifications can be made to the above-described embodiment within the scope of the present invention. Hereinafter, an example of the change will be described.

  For example, the overall configuration of the stroller 10 described in the above embodiment is merely an example. For example, a hinge that can be bent at a position where members extending in the width direction of the stroller 10 (for example, the footrest 32 and the rear connection bar 34) are aligned in a straight line when folded in the front-rear direction (the state shown in FIG. 3). May be included. According to such a modification, the baby stroller 10 in the folded state in the front-rear direction is further bent by the hinge and folded, whereby the size in the width direction of the baby stroller 10 can be reduced.

  In the above-described embodiment, 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 10. Not limited to. For example, as shown in FIG. 7, the handle 15 may be fixed at the rear position and not swingable from the rear position. In the example illustrated in FIG. 7, a pair of first links 40 is configured by a portion corresponding to an end portion of the U shape of the handle 15 having a U shape. In other words, the first link 40 further extends beyond the connection point with the armrest 28 and constitutes a part of the handle 15. In such a stroller 10 as well, the third link 50 that is rotatably connected to the rear leg 24 and the first link 40 that constitutes the handle 15 is configured similarly to the third link of the above-described embodiment. By doing so, it is possible to obtain the same effects as the above-described embodiment. In the example shown in FIG. 7, 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. It can be done.

  Further, in the above-described embodiment, the example in which the third link 50, the first link 40, and the second link 45 are arranged from the outer side in the width direction along the width direction of the stroller 10 is shown. For example, the first link 40, the third link 50, and the second link 45 may be arranged from the outside in the width direction, or the first link 40, the second link 45, and the third link 50. You may arrange | position from the width direction outer side in order.

  Furthermore, in the above-described embodiment, the rotation axis between the third link 50 and the first link 40 is the rotation axis between the first link 40 and the second link 45, and the second link 45. Although an example in which the axis of rotation between the first link and the third link 50 and the axis of rotation of the handle 15 with respect to the main body frame 12 are aligned is shown, the present invention is not limited thereto. The rotation axis between the third link 50 and the first link 40 is the rotation axis between the first link 40 and the second link 45, and between the second link 45 and the third link 50. And at least one of the rotation axis of the handle 15 and the rotation axis of the handle 15 with respect to the main body frame 12 may not be aligned with each other, or may be non-parallel to at least one of the rotation axis. Good.

  In addition, although the some modification with respect to embodiment mentioned above was demonstrated above, naturally, it is also possible to apply combining several modifications suitably.

DESCRIPTION OF SYMBOLS 10 Stroller 12 Body frame 15 Handle 22 Front leg 24 Rear leg 28 Armrest 40 First link 45 Second link 50 Third link 51 First part 52 Second part 53 Bent part 55 Link main part 59 Boss part

Claims (8)

A stroller that can be folded from an unfolded state to a folded state,
Armrests,
A front leg and a rear leg, the upper part of which is rotatably connected to the armrest;
A first link rotatably connected to a rear portion of the armrest;
A second link rotatably connected to an intermediate part of the front leg and a lower part of the first link;
A third link rotatably connected to the intermediate part of the rear leg and the lower part of the first link,
When the stroller in the unfolded state is observed from the width direction, the third link has a bent shape that protrudes rearward between the connection point with the first link and the connection point with the rear leg. The bent portion of the third link is located behind the line segment connecting the connecting portion of the third link and the first link and the connecting portion of the third link and the rear leg,
When the stroller in the unfolded state is observed from the width direction, the third link includes a first portion that extends rearward from a connection portion with the first link to the bent portion, and the rear leg from the bent portion. And a second portion extending downward to the connection point with
The first part is shorter than the second part;
When the stroller in a folded state is observed from the width direction, the second portion extends along the rear leg . When the stroller in the unfolded state is observed from the width direction, the third link extends rearward from the connection portion with the first link, and then bends downward to the connection portion with the rear leg. The stroller of claim 1 , wherein the stroller extends. The stroller according to claim 1 or 2 , wherein a gap surrounded by the third link and the rear leg is formed when the stroller in the unfolded state is observed from the width direction. In the deployed state, the first link contacts the rear leg,
When the stroller in the unfolded state is observed from the width direction, the first link and the precursor rear leg from the connection point between the first link and the third link to the connection point between the third link and the rear leg; the first link and the third link to the connection point between the rear leg from the connection point between the third link and the third link, a gap is formed between the, or one of the claims 1 to 3 one The stroller as described in the item. The third link has a link body part pivotally attached to the first link, and a boss part extending in the width direction of the stroller between the link body part and the rear leg,
The stroller according to any one of claims 1 to 4 , wherein the third link is pivotally attached to the rear leg at the boss portion. The thickness of the link main body portion along the width direction of the stroller at the connection location to the first link is the length of the boss portion along the width direction of the stroller and the stroller location where the boss portion is provided. The stroller according to claim 5 , wherein the stroller is substantially the same as a total of the thickness of the link main body along the width direction. A handle pivotably connected to the first link;
The third link is disposed between the first link and the handle in the width direction of the stroller,
The thickness of the third link along the width direction of the stroller at the connection point to the first link is substantially the same as the width of the gap between the first link and the handle along the width direction of the stroller. The stroller according to any one of claims 1 to 6 . The stroller according to any one of claims 1 to 6 , further comprising a handle pivotably connected to the first link, or the first link extending upward to form a handle.

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