Baby carriage

Abstract

The invention provides a baby carriage (10). The baby carriage (10) is provided with a baby carriage main body (11). The stroller body (11) includes a body frame (12), a seat support unit (40) held by the body frame (12), and a handle (30). The handle (30) is attached to the main body frame (12) so as to be swingable in the front-rear direction. The seat support unit (40) includes a seat support body (41). The position of the seat support body (41) in the main body frame (12) can be changed in the front-back direction.

Description

Technical Field

[0001] The invention relates to a baby carriage. Background Art

[0002] A baby stroller used when taking infants out is becoming widely popular. The baby stroller has a seat support unit that supports a seat for the infant to sit on, a main frame that supports the seat support unit, and a handle mounted on the main frame. The seat support unit is fixed to the main frame. Such a baby stroller is disclosed in Patent Document 1. The baby stroller disclosed in Patent Document 1 is capable of switching the position of the handle between a back-pushing position and a face-to-face pushing position.

[0003] Prior art literature Patent Literature Patent Document 1: Japanese Patent Application Publication No. 2018-202982 Summary of the invention

[0004] Technical issues In a baby stroller in which the position of the handle can be switched between a rear push position and a face-to-face push position, the distance between the grip of the handle and the center of gravity of the baby in the baby stroller is usually different when the handle is placed in the rear push position and when the handle is placed in the face-to-face push position. Therefore, the operability of the baby stroller is different when the handle is placed in the rear push position and when the handle is placed in the face-to-face push position, and it is sometimes difficult to operate the baby stroller in the other case.

[0005] Technical Solution The present invention has been made in view of the above-mentioned points, and an object of the present invention is to suppress changes in operability of a baby stroller caused by switching the position of a handle.

[0006] One embodiment of the present invention relates to the following [1] to

[17] . [1] A baby stroller includes a baby stroller body, wherein: The baby carriage body comprises: Main frame; a seat support unit held by the main body frame; and a handle mounted on the main frame in a manner that allows it to swing in the front-rear direction, The seat support unit includes a seat support body, The position of the seat support body in the main frame can be changed in the front-rear direction. [2] The baby stroller according to [1], wherein: The main body frame includes a locking mechanism capable of fixing the seat support body relative to the main body frame. [3] The baby stroller according to [2], wherein: The seat support body is movable between a first position and a second position further forward than the first position. The locking mechanism fixes the seat support body in the first position or the second position. [4] The baby stroller according to [3], wherein: The locking mechanism fixes the seat support body with respect to the main body frame when the seat support body reaches the second position from the first position side or when the seat support body reaches the first position from the second position side. [5] The baby stroller according to any one of [1] to [4], wherein: The main frame includes a locking mechanism capable of fixing the seat support body relative to the main frame, The fixing of the seat support body to the main body frame by the locking mechanism can be released as the handle is swung. [6] The baby stroller according to [5], wherein: The handle can be swung between a back-pushing position and a face-to-face pushing position, If the handle is moved from the rear push position toward the face-to-face push position, or if the handle is moved from the face-to-face push position toward the rear push position, fixation of the seat support to the main frame by the locking mechanism can be released. [7] The baby stroller according to any one of [1] to [6], wherein: The main frame includes front legs and rear legs, The seat support body is movable between a first position and a second position further forward than the first position. In a side view, a distance between the first position and the second position in the front-rear direction is at least one quarter of a distance between the front leg and the rear leg at a height position of the seat support body located at the first position. [8] The baby stroller according to any one of [1] to [7], wherein: The seat support unit includes a back support body, The back support is movable with the seat support. [9] The baby stroller according to [8], wherein: The main frame includes front legs and rear legs, The back support is connected to the seat support, When viewed from the side, the seat support unit is movable between a first position where the connection between the seat support and the back support is located behind the rear legs and a second position where the connection is located in front of the rear legs.

[10] The baby stroller according to [8] or [9], wherein: The main framework includes: front legs; A front wheel holding component connected to the front legs; a front wheel held by the front wheel holding member so as to be rotatable about a front wheel rotation axis extending in the horizontal direction; hind legs; a rear wheel holding member connected to the rear legs; and a rear wheel held by the rear wheel holding member so as to be rotatable about a rear wheel rotation axis extending in the horizontal direction, The seat support body is movable between a first position and a second position further forward than the first position. The back support is connected to the seat support, When viewed from the side, the position of the connection portion of the seat support body and the back support body in the front-to-back direction when the seat support body is configured to the second position is located more forward of the connection portion of the rear legs and the rear wheel holding component by more than one quarter of the distance in the front-to-back direction between the connection portion of the front legs and the front wheel holding component and the connection portion of the rear legs and the rear wheel holding component.

[11] The baby stroller according to any one of [1] to

[10] , wherein: The main framework includes: front legs; a front wheel holding member connected to the front legs; and a front wheel held by the front wheel holding member so as to be rotatable about a front wheel rotation axis extending in the horizontal direction, The seat support body is movable between a first position and a second position further forward than the first position. The front wheel holding member can rotate around the front wheel rotation axis extending in the vertical direction. A distance between the first position and the second position in the front-rear direction is at least twice a distance between the front wheel turning axis and the front wheel turning axis in a plane perpendicular to the front wheel turning axis in the horizontal direction.

[12] The baby stroller according to any one of [1] to

[11] , wherein: The seat support body is movable in a front-rear direction along a guide rail provided on the main body frame.

[13] The baby stroller according to any one of [1] to

[12] , wherein: The main framework includes: a first connecting rod member; a front leg connected to the first link member and capable of rotating relative to the first link member; a rear leg connected to the first link member and capable of rotating relative to the first link member; a second link member connected to the first link member and rotatable relative to the first link member; and a third link member, which is disposed between the front leg and the second link member and is rotatable relative to the front leg and the second link member, The third link member guides movement of the seat support body in the front-rear direction.

[14] The baby stroller according to any one of [1] to

[13] , wherein: The main frame includes a link member that allows the main frame to be foldable and unfoldable. Any one of the link members guides the movement of the seat support body.

[15] The baby stroller according to any one of [1] to

[11] , wherein: The seat support body is mounted to the main body frame so as to be swingable in the front-rear direction.

[16] The baby stroller according to any one of [1] to

[15] , wherein: The seat support unit includes a canopy support body, The canopy support is movable together with the seat support.

[17] The baby stroller according to any one of [1] to

[16] , wherein: The seat support unit includes a protective member, The guard is movable together with the seat support.

[0024] According to the present invention, it is possible to suppress a change in operability of the baby stroller due to switching of the position of the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a diagram for explaining one embodiment of the present invention and is a perspective view for explaining the overall structure of a baby stroller.

[0026] Figure 2 The handle is shown in the back push position. Figure 1 view of a baby stroller.

[0027] Figure 3 The handle is shown in the face-to-face push position. Figure 1 view of a baby stroller.

[0028] Figure 4 It is shown in the folded state Figure 1 view of a baby stroller.

[0029] Figure 5 Observed from the inside Figure 2 A partial cross-sectional view of the right side half of the stroller is shown.

[0030] Figure 6 Observed from the inside Figure 3 A partial cross-sectional view of the right side half of the stroller is shown.

[0031] Figure 7 It is along Figure 5 The cross-sectional view taken along line VII-VII of is a diagram showing the locking mechanism in which the locking member is in the locked position.

[0032] Figure 8 is with Figure 7 The corresponding figure is a diagram showing the lock mechanism in which the lock member is in the unlocked position.

[0033] Fig. 9 It is a diagram showing a modified example of the baby stroller, and is a partial cross-sectional view of the right half of the baby stroller as seen from the inside.

[0034] Fig.10 It is along Fig. 9 Cross-sectional view of line XX.

[0035] Fig.11A yes Fig. 9 A side view of a locking mechanism according to a modified example is shown.

[0036] Fig. 11B yes Fig. 9 A side view of a locking mechanism according to a modified example is shown.

[0037] Fig. 11C yes Fig. 9 A side view of a locking mechanism according to a modified example is shown.

[0038] Fig.12 1 is a diagram schematically showing still another modified example of the baby stroller, and is a cross-sectional view of the right half of the baby stroller when the seat support body is located in the first position as viewed from the inside.

[0039] Fig.13 is with Fig.12 The corresponding figure is a cross-sectional view of the right half of the stroller when the seat support body is located in the second position, as seen from the inside.

[0040] Fig.14 1 is a diagram schematically showing still another modified example of the baby stroller, and is a cross-sectional view of the right half of the baby stroller when the seat support body is located in the first position as viewed from the inside.

[0041] Fig.15 is with Fig.14 The corresponding figure is a cross-sectional view of the right half of the stroller when the seat support body is located in the second position, as seen from the inside.

[0042] Explanation of symbols 10: Baby stroller 11: Baby stroller body 12: Main frame 14: Front legs 16: Hind legs 18: Front wheel 18b: Front wheel rotation axis 18c: Front wheel swivel axle 19: Rear wheel 19b: Rear wheel rotation axis 19c: Rear wheel swivel axle 20: Shaft components 30: Handle 32: Handle extension 40: Seat support unit 41: Seat support 45: Back support 60: Connecting parts 61: Rear connecting parts 62: Front connection parts 70: Locking mechanism 71: Locking parts 75: Rear locking mechanism 76: Front locking mechanism 78: Hook 81: Rear locking part 82: Front locking part L1: First connecting rod component L2: Second connecting rod component L3: The third link component L4: Fourth connecting rod component DETAILED DESCRIPTION

[0043] Hereinafter, one embodiment of the present invention will be described with reference to a specific example shown in the drawings.

[0044] Figures 1 to 8 FIG. 1 is a diagram for explaining an embodiment of a baby carriage of the present invention. Figures 1 to 4 The overall structure of a specific example of a baby stroller is shown in FIG.

[0045] The baby carriage 10 of this embodiment includes a baby carriage body 11. Figure 1 As shown, the stroller body 11 shown in the figure has a generally symmetrical structure with the plane along the front-back direction and the up-down direction as the center. The stroller body 11 includes: a main frame 12 having front legs 14 and rear legs 16; a handle 30 mounted on the main frame 12; and a seat support unit 40 supported by the main frame 12. In the example shown in the figure, the stroller body 11 also includes a connecting member 60 and a locking mechanism 70.

[0046] In this embodiment, the handle 30 can be swung in the front-rear direction relative to the main frame 12. The handle 30 can be positioned Figure 2 The rear push position shown is the same as Figure 3 When the handle 30 is arranged in the rear push position, the operator (guardian) holds the handle 30 from the rear side of the infant to operate the stroller 10. At this time, the front leg 14 side of the stroller 10 is the front in the travel direction. When the handle 30 is arranged in the rear push position, the operator holds the handle 30 from the side facing the infant to operate the stroller 10. At this time, the rear leg 16 side of the stroller 10 is the front in the travel direction.

[0047] The seat support unit 40 supports a cushion cushion on which an infant sitting in the baby carriage 10 sits. The seat support unit 40 includes a seat support body 41 that supports the buttocks of an infant sitting in the baby carriage body 11 from below.

[0048] In the baby carriage 10 of the present embodiment, a method for suppressing the change in operability of the baby carriage 10 caused by switching the position of the handle 30 has been studied. Specifically, the position of the seat support 41 in the main frame 12 can be changed in the front-rear direction. As a result, it is possible to suppress the change in operability of the baby carriage 10 caused by the change in the distance between the grip portion (the middle portion 33 described later) of the handle 30 and the center of gravity of the infant on the seat support 41 due to the switching of the position of the handle 30.

[0049] In addition, in this specification, unless otherwise specified, the terms "front", "rear", "up", "down", "front-rear direction", and "up-down direction" with respect to the stroller and its components refer to the "front", "rear", "up", "down", "front-rear direction", and "up-down direction" based on the infant or young child riding in the stroller in the unfolded state and its components. More specifically, the "front-rear direction" refers to the direction connecting the stroller and its components. Figure 1 The lower left and upper right directions of the paper are equivalent to Figure 2 and Figure 3 Unless otherwise specified, "front" means the side that the infant is facing. Figure 1 The lower left side of the paper and Figure 2 and Figure 3 The left side of the paper in the figure is the front side. On the other hand, the "up and down direction" refers to the direction perpendicular to the running surface of the baby carriage. Therefore, when the running surface is a horizontal plane, the "up and down direction" refers to the vertical direction. In addition, the "lateral direction" refers to the width direction, which is a direction perpendicular to both the "front and rear direction" and the "up and down direction". In addition, the "back side" refers to the side opposite to the side facing the infant riding in the baby carriage 10. Therefore, the "back side" is usually the back side.

[0050] In the present specification, the widthwise inner side refers to a side closer to the center of the stroller body 11 in the widthwise direction. On the other hand, the widthwise outer side refers to a side farther from the center of the stroller body 11 in the widthwise direction.

[0051] exist Figures 1 to 8 In the specific example shown, the stroller body 11 is foldable. Hereinafter, each element constituting the stroller body 11 will be described in further detail.

[0052] (Main frame) like Figure 1As shown, the main frame 12 has a pair of front legs 14 respectively arranged on the left and right, and a pair of rear legs 16 respectively arranged on the left and right. The main frame 12 also has a group of first link components L1, second link components L2, third link components L3 and fourth link components L4 respectively arranged on the left and right. The front legs 14, the rear legs 16 and the first link components L1 to the fourth link components L4 function as link components that make the main frame 12 foldable and unfoldable. In the example shown in the figure, the first link component L1 also functions as an armrest. That is, the first link component L1 is composed of an armrest.

[0053] A front wheel 18 and a rear wheel 19 are rotatably provided at the lower end of the front leg 14 and the lower end of the rear leg 16, respectively. The front wheel 18 and the rear wheel 19 are respectively held by a front wheel holding member 18a connected to the lower end of the front wheel 18 and a rear wheel holding member 19a connected to the lower end of the rear wheel 19. The front wheel holding member 18a and the front wheel 18 constitute a caster. The front wheel 18 can rotate around a front wheel rotation axis 18b extending in the horizontal direction, and can rotate around a front wheel rotation axis 18c extending in the vertical direction. In addition, the rear wheel holding member 19a and the rear wheel 19 also constitute a caster. The rear wheel 19 can rotate around a rear wheel rotation axis 19b extending in the horizontal direction, and can rotate around a rear wheel rotation axis 19c extending in the vertical direction.

[0054] like Figure 1 As shown in FIG. 1 , the upper end portion of the front leg 14 is connected to the front portion of the first link member L1 disposed on the corresponding side (left or right) in a rotatable (swingable) manner. The upper end portion of the rear leg 16 is connected to the front portion of the first link member L1 disposed on the corresponding side (left or right) in a rotatable (swingable) manner. Figure 1 As shown, the upper portion of the second link member L2 is rotatably (swingably) connected to the rear portion of the first link member L1 disposed on the corresponding side (left or right). The second link member L2 is supported by the rear legs 16 when the main frame 12 is deployed.

[0055] The third link member L3 is disposed between the front leg 14 and the second link member L2. The third link member L3 is connected to the middle portion of the front leg 14 at its front portion. The third link member L3 can rotate relative to the front leg 14 around a rotation axis extending in the width direction. In addition, the third link member L3 is connected to the lower portion of the second link member L2 at its rear portion. The third link member L3 can rotate relative to the second link member L2 around a rotation axis extending in the width direction.

[0056] like Figure 2 and Figure 3As shown, the third link member L3 is connected to the second link member L2 via the shaft member 20 extending in the width direction. In addition, the third link member L3 is connected to the front leg 14 via the shaft member (not shown) extending in the width direction. Therefore, the pair of third link members L3 rotate synchronously with each other relative to the front leg 14 and the second link member L2. In the example shown in the figure, the third link member L3 extends substantially linearly in the front-rear direction in the unfolded state of the baby carriage 10.

[0057] like Figure 1 As shown, in the example shown in the figure, the fourth link component L4 is connected to the rear leg 16 in a rotatable manner. The fourth link component L4 is connected to the middle part of the rear leg 16 in a rotatable manner at its lower part. The fourth link component L4 is rotatably connected to the second link component L2, and the fourth link component L4 is rotatably connected to the third link component L3. In the example shown in the figure, the second link component L2, the third link component L3 and the fourth link component L4 are rotatably connected to each other using the same shaft component 20. The shaft component 20 passes through the second link component L2, the fourth link component L4 and the third link component L3. According to this structure, the second link component L2, the third link component L3 and the fourth link component L4 can rotate with each other around an axis that coincides with the central axis of the shaft component 20.

[0058] In addition, if Figure 1 As shown, the main frame 12 has a front connecting member 15 connecting a pair of front legs 14 and a rear connecting member 17 connecting a pair of rear legs 16 as components extending in the lateral direction. The front connecting member 15 functions as a footrest. In addition, a central connecting member 21 is provided between a pair of third link members L3. The front connecting member 15, the rear connecting member 17 and the central connecting member 21 can suppress the lateral deformation of the baby carriage 10.

[0059] (handle) As described above, the handle 30 can swing forward and backward relative to the main frame 12. The handle 30 can be pushed in the rear position (refer to Figure 2 ) and face-to-face push position (reference Figure 3 ). In the illustrated example, the handle 30 is tilted relative to the vertical direction and extends in the rearward direction in the back push position. The handle 30 is tilted relative to the vertical direction and extends in the forward direction in the face-to-face push position.

[0060] In the example shown in the drawings, the handle 30 includes a handle body 31 swingably mounted on the main body frame 12 , and a holding body 35 provided on the handle body 31 .

[0061] like Figure 1As shown, the handle body 31 has a generally U-shaped shape. The handle body 31 is connected to the main frame 12 at both ends of the U-shape in a rotatable (swingable) manner. The handle body 31 includes a pair of handle extensions 32 extending approximately parallel to each other, and an intermediate portion 33 connecting the pair of handle extensions 32. The pair of handle extensions 32 are arranged on the outer sides in the width direction of the main frame 12. Each handle extension 32 is rotatably connected to the main frame 12 at its lower end. The intermediate portion 33 is a gripping portion for the operator (guardian) to hold.

[0062] In the example shown in the figure, the handle body 31 is connected to the main frame 12 in a rotatable manner using the shaft member 20. That is, the second link member L2, the third link member L3, the fourth link member L4 and the handle 30 can rotate relative to each other around the same axis divided by the shaft member 20. Figure 3 ) is engaged, so that the handle 30 can be kept Figure 2 The back push position shown. Since the holding body 35 provided on the handle 30 and the second holding member 37 (refer to Figure 2 ) is engaged, so that the handle 30 can be kept Figure 3 Face-to-face push position shown.

[0063] In the example shown in the figure, the engagement between the holding body 35 and the holding members 36 and 37 can be released by lifting the holding body 35 along the handle extension 32. Therefore, when the handle 30 is swung between the back push position and the face-to-face push position, the holding body 35 is lifted along the handle extension 32 to release the engagement between the holding body 35 and the holding members 36 and 37, and then the handle 30 is swung relative to the main frame 12.

[0064] The stroller body 11 having the above structure can be folded by relatively rotating the components. Specifically, the second link member L2 is temporarily lifted upward and backward using the handle 30 disposed at the rear push position, and then pressed downward, so that the fourth link member L4 is relatively close to the rear leg 16. Figure 2 With this operation, the first link member L1 and the third link member L3 are rotated in the clockwise direction relative to the second link member L2. Figure 2 By such operation, the second link member L2 and the front leg 14 approach each other while maintaining a substantially parallel configuration when viewed from the side, and the position of the handle 30 relative to the main frame 12 is lowered. Figure 4 As shown, the stroller body 11 can be folded. Figure 4In the folded state, the dimensions of the stroller 10 in the front-rear direction and the up-down direction can be made compact. On the other hand, in order to unfold the stroller body 11 from the folded state, it is only necessary to perform the steps in the reverse direction of the above-mentioned folding operation.

[0065] It should be noted that the stroller body 11 has a state-holding mechanism (not shown) that restricts the relative rotation of the two components. By operating the state-holding mechanism, the stroller body 11 can be folded. In the example shown in the figure, the handle 30 has a remote control device 38 connected to the state-holding mechanism. Figure 1 As shown, the remote control device 38 is provided in the middle portion 33 of the handle body 31. By operating the remote control device 38, the state holding mechanism is actuated, and the stroller body 11 can be folded.

[0066] (Seat support unit) The seat support unit 40 supports a cushion (not shown) for the infant to sit on. The seat support unit 40 includes a seat support body 41 and a back support body 45. The seat support body 41 is opposite to the buttocks of the infant sitting in the baby carriage 10. The back support body 45 is opposite to the back of the infant. Figure 1 As shown, the seat support unit 40 is arranged inside in the width direction of the main frame 12. More specifically, the seat support unit 40 is arranged between the left and right front legs 14 and between the left and right rear legs 16.

[0067] The seat support body 41 has a front frame member 42. The front frame member 42 is a frame member formed in a roughly U-shape. The front frame member 42 has a pair of side portions 43 extending in the front-to-back direction, and a front end portion 44 extending in the width direction and connecting the front ends of the pair of side portions 43. The seat support body 41 is stretched and mounted on the front frame member 42, and includes a cloth (not shown) that divides the seat surface. Alternatively, the seat support body 41 is supported from below by the front frame member 42, and includes a seat plate (not shown) that divides the seat surface. The seat plate is a plate-shaped member formed using resin or metal. It should be noted that when the seat support body 41 includes a seat plate, the seat support body 41 may not include the front frame member 42.

[0068] As described later, the seat support 41 is held by the third link member L3. Thus, when the stroller body 11 is folded, the seat support 41 can be rotated along with the rotation of the third link member L3. When the stroller body 11 is folded, the angle of the seat support 41 relative to the second link member L2 can be automatically reduced, and the dimension of the stroller 10 in the front-rear direction in the folded state can be reduced. In other words, when the stroller 10 in the folded state is viewed from the side, the seat support 41 can be prevented from protruding further forward than the main frame 12.

[0069] The back support body 45 has a rear frame member 46. The rear frame member 46 is a frame member formed in a substantially U-shape. The rear frame member 46 has a pair of side portions 47 extending in the front-rear direction and / or the up-down direction, and a rear end portion 48 extending in the width direction and connecting the rear ends of the pair of side portions 47. In the example shown in the figure, the back support body 45 is connected to the seat support body 41. More specifically, the rear frame member 46 extends upward or backward from the rear end of the front frame member 42. The front end of the back support body 45 is connected to the rear end of the front frame member 42 in a manner that can rotate around a rotation axis extending in the width direction. The rotation axis passes through a connection portion A (hereinafter also referred to as a "back seat connection portion A") between the back support body 45 and the seat support body 41. Since the back support body 45 rotates relative to the seat support body 41, the back support body 45 can be reclined relative to the seat support body 41. The back support body 45 may further include a cloth-like member or a plate-like member supported by the rear frame member 46 .

[0070] The back support body 45 is supported from behind by an inclined belt 49 whose ends are connected to the main frame 12. This prevents the back support body 45 from falling backward. The length of the inclined belt 49 is variable. By adjusting the length of the inclined belt 49, the back support body 45 can be tilted. It should be noted that the inclined belt 49 is only Figure 2 and Figure 3 In other figures, the illustration of the inclined belt 49 is omitted.

[0071] In the example shown in the figure, both ends of the inclined belt 49 are connected to the first link member L1. Since the inclined belt 49 is arranged at the back side of the back support body 45 at its central part and connected to the first link member L1 at both ends, when the main frame 12 is folded, the back support body 45 can be rotated relative to the second link member L2 along with the rotation of the first link member L1. When the baby carriage 10 is folded, the angle of the back support body 45 relative to the second link member L2 can be automatically reduced, and the dimension of the baby carriage 10 in the front-rear direction in the folded state can be reduced. In other words, when the baby carriage 10 in the folded state is viewed from the side, the back support body 45 can be prevented from protruding further to the rear than the second link member L2.

[0072] In addition, if Figure 5 As shown, the seat support unit 40 includes a pair of side support portions 50 extending in the vertical direction and a side frame member 51. The side support portions 50 are located above the side portions 47 of the back support body 45. In the example shown in the figure, the lower end portions of the side support portions 50 are fixed to the seat support body 41.

[0073] The side frame member 51 is a frame member formed in a substantially U-shape. The side frame member 51 is connected to the upper end of the side support portion 50 at both ends of the U. The side frame member 51 is connected to the side support portion 50 so as to be rotatable around a rotation axis parallel to the width direction.

[0074] A pair of connecting frame members 52 is provided between the side frame member 51 and the rear frame member 46. The pair of connecting frame members 52 are arranged to be separated from each other in the width direction. The connecting frame member 52 can rotate relative to the rear frame member 46 and the side frame member 51. The connecting frame member 52 functions as a link member, and swings the other one along with the swing of one of the rear frame member 46 and the side frame member 51. In addition, the connecting frame member 52 forms a wall portion located behind the head of the infant when the back support body 45 is lying down, and forms a wall portion located behind the head of the infant when the back support body 45 is standing up.

[0075] In addition, the seat support unit 40 has a pair of protective support bodies 54 connected to the left and right side portions of the seat support body 41, and a protective member 55 extending between the pair of protective support bodies 54. The left and right ends of the protective member 55 are respectively connected to the left and right protective support bodies 54 in a detachable manner. In addition, the seat support unit 40 has a canopy support body 57 that supports a canopy cloth (not shown). The canopy support body 57 includes a pair of canopy support members 58 respectively fixed to the two ends of the side frame member 51, and a canopy frame 59 extending between the pair of canopy support members 58. The canopy cloth is installed on the canopy frame 59 to form a canopy. The canopy covers the infant sitting on the seat support unit 40 from above, providing a sunshade environment for the infant.

[0076] (Connecting parts) The connecting member 60 connects the main frame 12 and the seat support 41. In the example shown in the figure, the stroller body 11 includes a rear connecting member 61 and a front connecting member 62. Figure 3 As shown, the front connecting member 62 is located in front of the rear connecting member 61. Each connecting member 61, 62 has a base 63 fixed to the seat support body 41, and a lower extension portion 64 extending downward from the base 63. An annular portion 65 for the third connecting rod member L3 to be inserted is formed at the lower end of the lower extension portion 64. The lower extension portion 64 is connected to the third connecting rod member L3 in a manner that can slide in the front-to-back direction. Therefore, each connecting member 61, 62 is guided by the third connecting rod member L3 and can move in the front-to-back direction. In other words, the third connecting rod member L3 functions as a guide rail member that guides the movement of the rear connecting member 61 and the front connecting member 62 in the front-to-back direction. In the example shown in the figure, the protective support body 54 is connected to the base 63 of the front connecting member 62.

[0077] By connecting the main frame 12 and the seat support 41 by using such a connecting member 60, the seat support 41 can be moved in the front-rear direction relative to the main frame 12. As a result, when placing an infant on the seat support 41 or taking the infant away from the seat support 41, or when taking care of the infant on the seat support 41, the seat support 41 can be moved forward relative to the main frame 12. It should be noted that usually, the operator (guardian) places the infant on the seat support 41 or takes the infant away from the seat support 41 from the front of the baby carriage 10, or takes care of the infant on the seat support 41. By moving the seat support 41 forward relative to the main frame 12, the seat support 41 can be brought close to the operator (guardian), making it easy to place the infant on the seat support 41 or take the infant away from the seat support 41, or take care of the infant on the seat support 41. More specifically, when placing an infant on the seat support 41, taking the infant away from the seat support 41, or taking care of the infant on the seat support 41, the operator (guardian) can be prevented from approaching the seat support 41 and being blocked by the main frame 12. Figure 2 The first position shown is Figure 3 The second position is located further forward than the first position. Figure 3 In the embodiment, the handle 30 is arranged in the face-to-face push position, but the seat support 41 may be arranged in the second position when the handle 30 is arranged in the back push position. By arranging the seat support 41 in the second position when the handle 30 is arranged in the back push position, when placing an infant on the seat support 41 or taking the infant away from the seat support 41, or when taking care of the infant on the seat support 41, the possibility that the main frame 12 and the handle 30 will prevent the operator (guardian) from approaching the seat support 41 can be suppressed.

[0078] It should be noted that Figure 5 In FIG. 4 , the seat support body 41 located at the first position is indicated by a solid line, and the seat support body 41 located at the second position is indicated by a dotted line. Figure 5 and Figure 6 Observe from the inside Figure 2 and Figure 3 A partial cross-sectional view of the right side half of the stroller 10 is shown.

[0079] In the example shown in the figure, when the seat support body 41 moves in the front-rear direction relative to the main frame 12, the rear connecting member 61 and the front connecting member 62 slide on the third link member L3 while supporting the seat support body 41. Therefore, the seat support body 41 moves in the front-rear direction on the main frame 12 stably.

[0080] In addition, in the example shown in the figure, the seat support body 41 is supported from below by the connecting member 60 mounted on the main frame 12. In other words, the seat support body 41 is arranged at a position higher than the connecting portion (the third link member L3 in the example shown in the figure) between the main frame 12 and the connecting member 60. As a result, the height position of the seat support body 41 relative to the main frame 12 can be increased. By increasing the height position of the seat support body 41, the seat support body 41 can also be brought closer to the operator (guardian), making it easy to place an infant on the seat support body 41 or take the infant away from the seat support body 41, and to take care of the infant on the stroller 10.

[0081] Furthermore, by moving the seat support 41 relative to the main frame 12, it is also possible to suppress a change in the operability of the stroller 10 due to switching the position of the handle 30. The reason for this is as follows.

[0082] First, the operability of the baby carriage 10 changes according to the distance in the front-to-back direction between the grip portion (middle portion 33) of the handle 30 and the center of gravity of the infant on the seat support body 41. Generally, the shorter the distance in the front-to-back direction between the grip portion 33 and the center of gravity of the infant on the seat support body 41, the more the operability of the baby carriage 10 is improved. The position in the front-to-back direction of the center of gravity of the infant in the main frame 12 is roughly consistent with the position in the front-to-back direction of the back seat connection portion A in the main frame 12. Therefore, the operability of the baby carriage 10 changes according to the distance in the front-to-back direction between the grip portion 33 and the back seat connection portion A, and the shorter the distance, the more the operability of the baby carriage 10 is improved.

[0083] In a conventional baby stroller in which the front-to-back position of the seat support body 41 cannot be changed, the front-to-back distance between the grip 33 and the back seat connection part A is different when the handle 30 is placed in the back push position and when the handle 30 is placed in the face-to-face push position. Therefore, the operability of the baby stroller 10 is different when the handle 30 is placed in the back push position and when the handle 30 is placed in the face-to-face push position. For example, when the seat support body 41 is fixed to the Figure 2In the baby stroller in the first position shown, the operability of the baby stroller 10 is good when the handle 30 is arranged in the back push position. This is because the distance between the grip portion 33 and the back seat connection portion A in the front-to-back direction is short. On the other hand, the operability of such a baby stroller is impaired when the handle 30 is arranged in the face-to-face push position. This is because the distance between the grip portion 33 and the back seat connection portion A in the front-to-back direction is long.

[0084] In the present embodiment, the seat support body 41 is moved to the second position when the handle 30 is arranged in the face-to-face push position, so that the distance in the front-to-back direction between the grip 33 and the back seat connection part A can be shortened, and the operability of the baby stroller 10 when the handle 30 is arranged in the face-to-face push position can be improved. In other words, by changing the position of the seat support body 41 in the main frame 12 in the front-to-back direction in accordance with the swing of the handle 30, the change in the distance in the front-to-back direction between the grip 33 and the back seat connection part A caused by switching the position of the handle 30 can be suppressed, and the change in the operability of the baby stroller 10 can be suppressed.

[0085] As described above, in the example shown in the figure, the back support body 45, the guard 55, and the canopy support body 57 are connected to the seat support body 41. Therefore, if the seat support body 41 is moved in the front-to-back direction relative to the main frame 12, the positions of the back support body 45, the guard 55, and the canopy support body 57 in the front-to-back direction relative to the main frame 12 automatically change. In other words, if the seat support body 41 is moved forward relative to the main frame 12, the back support body 45, the guard 55, and the canopy support body 57 move forward together with the seat support body 41. In addition, if the seat support body 41 is moved backward relative to the main frame 12, the back support body 45, the guard 55, and the canopy support body 57 move backward together with the seat support body 41. Therefore, even if the position of the seat support body 41 in the front-to-back direction relative to the main frame 12 changes, the positional relationship between the seat support body 41 and the back support body 45, the guard 55, and the canopy support body 57 can be maintained. Therefore, the size of the seating space of the seat support unit 40 does not change due to the movement of the seat support body 41 relative to the main frame 12, nor does the position of the guard 55 and the canopy on the seat support body 41 change relative to the infant. Therefore, the riding comfort of the baby stroller is suppressed from changing before and after the position of the seat support body 41 in the front-to-back direction is changed. In addition, even if the position of the seat support body 41 in the front-to-back direction is changed, a shaded environment can be appropriately provided. In addition, when the position of the seat support body 41 in the front-to-back direction in the main frame 12 is changed in response to the swing of the handle 30, the back support body 45, the guard 55, and the canopy support body 57 are moved together with the seat support body 41, thereby suppressing the change in the distance in the front-to-back direction between the grip 33 of the handle 30 and the center of gravity of the seat support unit 40 when the position of the handle 30 is switched, and the change in the operability of the baby stroller 10 is more effectively suppressed.

[0086] (Locking mechanism) The locking mechanism 70 can fix the seat support body 41 relative to the main frame 12. The locking mechanism 70 can fix the seat support body 41 in the first position or the second position. Thus, the possibility of the seat support body 41 accidentally moving from the first position or the second position is suppressed. Figure 7 and Figure 8 The lock mechanism 70 will be described. Figure 7 and Figure 8 It is along Figure 5 A cross-sectional view taken along line VII-VII.

[0087] exist Figure 7 and Figure 8In the example shown, the locking mechanism 70 includes a locking member 71 and a force applying member 73. The locking member 71 can move in the width direction relative to the main frame 12. Figure 7 The locked position shown is the same as Figure 8 The locking member 71 can be arranged in the locked position when the seat support body 41 is arranged in the first position or the second position. When the locking member 71 is in the locked position, it interferes with the connecting member 60 and restricts the movement of the seat support body 41 in the front-to-back direction. In the example shown in the figure, when the seat support body 41 is in the first position and the locking member 71 is in the locked position, the locking member 71 is opposite to the front end of the rear connecting member 61, restricting the connecting member 60 from moving forward (see FIG. Figure 5 In addition, when the seat support body 41 is located at the second position and the locking member 71 is located at the locking position, the locking member 71 is opposed to the rear end of the rear connecting member 61, restricting the connecting member 60 from moving backward (refer to Figure 6 ).

[0088] The locking member 71 is connected to an operating portion 72. By operating the operating portion 72, the locking member 71 can be moved in the width direction. The force applying member 73 applies force to the locking member 71 from the outside toward the inside in the width direction. Therefore, when the operating portion 72 is not operated, the locking member 71 is arranged in the locked position. By operating the operating portion 72 to move the locking member 71 outward in the width direction, the locking member 71 can be moved to the unlocked position.

[0089] In the stroller 10 having such a locking mechanism 70, when the seat support body 41 is moved from the first position to the second position, the operator (guardian) operates the operating part 72 to move the locking member 71 to the unlocking position. Thus, interference between the locking member 71 and the connecting member 60 is prevented. Therefore, the operator (guardian) can move the seat support body 41 to the second position. If the seat support body 41 is configured to the second position, the operation of the operating part 72 is ended. Thus, the locking member 71 is moved to the locking position by the force of the force applying member 73. Since the locking member 71 is maintained in the locking position by the force of the force applying member 73, the seat support body 41 is fixed in the second position.

[0090] When the seat support body 41 is moved from the second position to the first position, the operator (guardian) operates the operating part 72 to move the locking member 71 to the unlocking position. Thus, interference between the locking member 71 and the connecting member 60 is prevented. Therefore, the operator (guardian) can move the seat support body 41 to the first position. If the seat support body 41 is configured to the first position, the operation of the operating part 72 is ended. Thus, the locking member 71 is moved to the locking position by the force of the force applying member 73. Since the locking member 71 is maintained in the locking position by the force of the force applying member 73, the seat support body 41 is fixed in the first position.

[0091] (First and second positions) In the example shown in the figure, the first position and the second position of the seat support body 41 are determined as follows. Figure 2 and Figure 3 As shown, the first position and the second position are determined as follows: when the baby carriage body 11 is viewed from the side, when the seat support body 41 is arranged in the first position, the back seat connection part A is located behind the rear legs 16, and when the seat support body 41 is arranged in the second position, the back seat connection part A is located in front of the rear legs 16. As a result, when the seat support body 41 is arranged in the first position, the distance between the gripping part 33 of the handle 30 arranged in the back push position and the back seat connection part A in the front-back direction is sufficiently short, and the operability of the baby carriage 10 is good. On the other hand, when the seat support body 41 is arranged in the second position, the distance between the operator (guardian) located in front of the baby carriage 10 and the seat support body 41 becomes sufficiently close, which can effectively make it easy to put an infant on the seat support body 41, take the infant away from the seat support body 41, and take care of the infant on the seat support body 41. Furthermore, when the handle 30 is arranged in the face-to-face pushing position, by arranging the seat support body 41 in the second position, the distance in the front-to-back direction between the grip portion 33 of the handle 30 and the back seat connection portion A can be sufficiently shortened, and the operability of the baby stroller 10 can be improved. In other words, the change in the distance in the front-to-back direction between the position of the center of gravity of the infant on the baby stroller 10 and the grip portion 33 of the handle 30 when the position of the handle 30 is switched can be effectively suppressed, and the change in the operability of the baby stroller 10 can be effectively suppressed.

[0092] In the example shown in the figure, the distance D1 in the front-rear direction between the first position and the second position of the seat support body 41 (see Figure 5 ) is the distance D2 in the front-rear direction between the front leg 14 and the rear leg 16 at the height position of the seat support body 41 located at the first position (refer to Figure 5) is more than one-fourth of the distance between the first position and the second position. Thus, when the seat support 41 is arranged in the second position, the distance between the operator (guardian) located in front of the baby carriage 10 and the seat support 41 becomes sufficiently close, which can effectively make it easy to put an infant on the seat support 41, take the infant away from the seat support 41, and take care of the infant on the seat support 41. In addition, when the position of the handle 30 is switched, the change in the distance in the front-to-back direction between the position of the center of gravity of the infant on the baby carriage 10 and the gripping portion 33 of the handle 30 can be effectively suppressed, and the change in the operability of the baby carriage 10 can be effectively suppressed.

[0093] In the example shown in the figure, the first position and the second position of the seat support body 41 are determined as follows. That is, when the baby carriage body 11 is viewed from the side, the back seat connection portion A when the seat support body 41 is arranged in the second position is located forward of the connection portion between the rear leg 16 and the rear wheel holding member 19a by a distance D3 (see FIG. Figure 3 ) (in other words, the distance D4 in the front-rear direction between the back seat connection portion A and the connection portion between the rear leg 16 and the rear wheel holding member 19a when the seat support body 41 is arranged in the second position (refer to Figure 3 ) is at least one-fourth of the distance D3 described above), and the first position and the second position are determined. The distance D3 is the distance in the front-rear direction between the connection portion between the rear leg 16 and the rear wheel holding member 19a and the connection portion between the front leg 14 and the front wheel holding member 18a. Thus, when the seat support 41 is arranged in the second position, the distance between the operator (guardian) located in front of the baby carriage 10 and the seat support 41 becomes sufficiently close, and it is effectively easy to put an infant on the seat support 41, take the infant away from the seat support 41, and take care of the infant on the seat support 41. In addition, when the position of the handle 30 is switched, the distance in the front-rear direction between the center of gravity of the infant on the baby carriage 10 and the grip portion 33 of the handle 30 can be effectively suppressed, and the change in the operability of the baby carriage 10 can be effectively suppressed.

[0094] In the example shown in the figure, the first position and the second position of the seat support body 41 are determined as follows. That is, the distance D1 in the front-rear direction between the first position and the second position (see Figure 5 ) is the horizontal distance D5 between the front wheel rotation axis 18c and the front wheel rotation axis 18b in a plane perpendicular to the front wheel rotation axis 18b (refer to Figure 3 ) is more than twice, and the first position and the second position are determined. Here, when the front wheel holding member 18a rotates around the front wheel rotation axis 18c, as shown in FIG. Figure 2 and Figure 3As shown, the position of the front wheel rotation axis 18b relative to the front wheel rotation axis 18c changes when the handle 30 is arranged in the back push position to operate the baby carriage 10 and when the handle 30 is arranged in the face-to-face push position to operate the baby carriage 10. In the example shown in the figure, when the handle 30 is arranged in the back push position to operate the baby carriage 10, the front wheel rotation axis 18b is located behind the front wheel rotation axis 18c. On the other hand, when the handle 30 is arranged in the face-to-face push position to operate the baby carriage 10, the front wheel rotation axis 18b is located in front of the front wheel rotation axis 18c. When the handle 30 is arranged in the face-to-face push position to operate the baby carriage 10, the operator of the baby carriage 10 operates the baby carriage 10 with the front wheel rotation axis 18b as a fulcrum. In such a baby stroller in which the front wheel 18 is swiveled, when the position of the seat support body 41 in the front-to-back direction does not change, the distance in the front-to-back direction between the front wheel rotation axis 18b and the back seat connection part A when the baby stroller is operated by placing the handle 30 in the face-to-face push position is greater than the distance in the front-to-back direction between the front wheel rotation axis 18b and the back seat connection part A when the handle 30 is placed in the back push position. Therefore, in the example shown in the figure, by setting the distance D1 in the front-to-back direction between the first position and the second position of the seat support body 41 to be more than twice the distance D5, the change in the distance in the front-to-back direction between the front wheel rotation axis 18b and the back seat connection part A caused by the swiveling of the front wheel 18 can be eliminated. As a result, the change in the operability of the baby stroller 10 caused by the swiveling of the front wheel 18 can be suppressed.

[0095] <<Modifications>> Next, refer to Figures 9 to 15 , various modifications of this embodiment are described. Figures 9 to 15 In, with Figures 1 to 8 The same parts as shown in the above-mentioned embodiments are denoted by the same symbols and detailed description is omitted.

[0096] <Variation 1> The locking mechanism 70 may also fix the seat support body 41 relative to the main frame 12 when the seat support body 41 reaches the second position from the first position side, or when the seat support body 41 reaches the first position from the second position side. In other words, the locking mechanism 70 may not fix the seat support body 41 relative to the main frame 12 while the seat support body 41 is between the first position and the second position.

[0097] Fig. 9 This is a cross-sectional view of the right half of the stroller body 11 as viewed from the inside. Fig.10 It is along Fig. 9 To simplify the diagram, Fig.10In the figure, the front leg 14, the rear leg 16, the handle 30, and the second link member L2 are omitted. FIG. 11A to FIG. 11C yes Figures 9 and 10 A side view of the locking mechanism 70 of the illustrated example.

[0098] exist Figures 9 to 11C In the example shown, the stroller body 11 has a rear locking mechanism 75 and a front locking mechanism 76. Each of the locking mechanisms 75 and 76 has a base 77 fixed to the third link member L3 and a hook 78 connected to the base 77. The hook 78 can rotate relative to the base 77 around a rotation axis extending in the width direction. The hook 78 has a main body 78a extending in the front-back direction and an extension 78b extending downward from the main body 78a. The main body 78a of the rear locking mechanism 75 is connected to the base 77 at its rear end, and the extension 78b of the rear locking mechanism 75 extends from its front end. The main body 78a of the front locking mechanism 76 is connected to the base 77 at its front end, and the extension 78b of the front locking mechanism 76 extends from its rear end. An inclined surface 79 is formed at the lower end of the extension 78b. The inclined surface 79 of the rear locking mechanism 75 faces forward and tilts downward as it faces backward. The inclined surface 79 of the front locking mechanism 76 faces rearward and is inclined downward as it faces forward. The hook 78 of the rear locking mechanism 75 is urged by a biasing member (not shown) to Fig. 9 The hook 78 of the front locking mechanism 76 is pushed by a force applying member (not shown) to Fig. 9 Apply force in the clockwise direction. Fig. 9 In the embodiment, the front end of the extension portion 78b of each hook 78 is pressed against the third link member L3 by the urging force of the urging member.

[0099] The seat support body 41 has a rear engaging portion 81 and a front engaging portion 82. The rear engaging portion 81 and the front engaging portion 82 can be engaged with the hook 78 of the rear locking mechanism 75 and the hook 78 of the front locking mechanism 76, respectively. In the example shown in the figure, each engaging portion 81, 82 is formed in a substantially U-shape. Both ends of the U-shape of the rear engaging portion 81 are fixed to the rear end of the rear connecting member 61. The rear engaging portion 81 extends rearward from the rear end of the rear connecting member 61. Both ends of the U-shape of the front engaging portion 82 are fixed to the front end of the front connecting member 62. The front engaging portion 82 extends forward from the front end of the front connecting member 62.

[0100] In the stroller body 11 having the locking mechanisms 75, 76 and the engaging portions 81, 82, when the seat support body 41 is moved from the first position toward the second position, Fig.11AAs shown in FIG. 1 , the front engaging portion 82 contacts the inclined surface 79 of the hook 78 of the front locking mechanism 76. If the seat support body 41 is further moved toward the second position, as shown in FIG. Fig. 11B As shown, the front engaging portion 82 pushes up the inclined surface 79 of the hook 78 of the front locking mechanism 76, and the hook 78 moves in the direction in which the extension portion 78b leaves the third link member L3 ( Fig. 11B As a result, the front engaging portion 82 passes between the hook 78 and the third link member L3 and moves between the extension portion 78b and the base 77. If the front engaging portion 82 moves between the extension portion 78b and the base 77, the hook 78 moves toward the extension portion 78b approaching the third link member L3 due to the force of the force applying member ( Fig. 11B As a result, if Fig. 11C As shown, the extension portion 78b contacts the third link member L3. As a result, the extension portion 78b is disposed between the front engaging portion 82 and the front connecting member 62, and the seat support body 41 is fixed at the first position.

[0101] On the other hand, if the seat support body 41 is moved from the second position toward the first position, Fig.11A As shown in FIG. 1 , the rear engaging portion 81 contacts the inclined surface 79 of the hook 78 of the rear locking mechanism 75. If the seat support body 41 is further moved toward the first position, as shown in FIG. Fig. 11B As shown, the rear engaging portion 81 pushes up the inclined surface 79 of the hook 78 of the rear locking mechanism 75, and the hook 78 moves in the direction in which the extension portion 78b leaves the third link member L3 ( Fig. 11B As a result, the rear engaging portion 81 passes between the hook 78 and the third link member L3 and moves between the extension portion 78b and the base 77. If the rear engaging portion 81 moves between the extension portion 78b and the base 77, the hook 78 moves toward the extension portion 78b approaching the third link member L3 due to the force of the force applying member ( Fig. 11B As a result, if Fig. 11C As shown, the extension portion 78b contacts the third link member L3. As a result, the extension portion 78b is disposed between the rear engaging portion 81 and the rear connecting member 61, and the seat support body 41 is fixed at the second position.

[0102] In the example shown in the figure, when the seat support body 41 is in the first position, the rear engaging portion 81 is engaged with the rear locking mechanism 75, and the front engaging portion 82 is not engaged with the front locking mechanism 76. On the other hand, when the seat support body 41 is in the second position, the rear engaging portion 81 is not engaged with the rear locking mechanism 75, and the front engaging portion 82 is engaged with the front locking mechanism 76.

[0103] In the example shown in the figure, when the seat support body 41 located at the first position is moved to the second position, the hook 78 of the rear locking mechanism 75 is operated (to move it to the left). Fig. 11C After the extension portion 78b is separated from the third link member L3, the seat support body 41 is moved to the second position. In addition, when the seat support body 41 located at the second position is moved to the first position, the hook 78 of the front locking mechanism 76 is operated (to move it to the first position). Fig. 11C After the extension portion 78b is separated from the third link member L3, the seat support body 41 is moved to the first position.

[0104] <Variation 2> In the above example, the fixing of the seat support body 41 to the main frame 12 by the locking mechanism 70 is released manually, but the present invention is not limited thereto. The fixing of the seat support body 41 to the main frame 12 by the locking mechanism 70 is released along with the swinging of the handle 30. In this case, if the handle 30 is swung from the rear push position toward the face-to-face push position, or if the handle 30 is swung from the face-to-face push position toward the rear push position, the fixing of the seat support body 41 to the main frame 12 by the locking mechanism 70 can be automatically released.

[0105] For example, such a locking mechanism 70 can be realized by coupling the locking member 71 and the hook 78 to the handle 30 . Alternatively, for example, such a locking mechanism 70 can be realized by coupling the locking member 71 and the hook 78 to the holding body 35 .

[0106] Alternatively, for example, such a locking mechanism 70 can also be implemented by the following method. First, the locking member 71 and the hook 78 are connected to the switch mounted on the main frame 12. The locking member 71 and the hook 78 are connected to the switch in a manner that the switch is operated when the switch is pressed. In addition, the switch is arranged on the main frame 12 in a manner that the switch interferes with the handle 30 when the handle 30 is swung relative to the main frame 12 and is pressed. With such a locking mechanism 70, when the handle 30 is swung, the fixing of the seat support body 41 to the main frame 12 by the locking mechanism 70 can also be automatically released.

[0107] <Variation 3> In the above example, the seat support body 41 is guided by the third link member L3 to move in the front-to-back direction, but the present invention is not limited thereto. The seat support body 41 may also be guided by a link member other than the third link member L3 (e.g., the first link member L1) among the link members 14, 16, L1 to L4 of the main frame 12 that is configured to be foldable to move in the front-to-back direction. In addition, the seat support body 41 may also be guided by a member other than the above-mentioned link member of the main frame 12 to move in the front-to-back direction. In the case where the seat support body 41 is supported by the first link member L1, the seat support body 41 may be arranged between the first link members L1 or may be arranged above the first link member L1.

[0108] <Variation 4> In the above example, the seat support 41 can slide linearly on the main frame 12, but the present invention is not limited thereto. The seat support 41 can also be mounted so as to be swingable in the front-rear direction relative to the main frame 12. Fig.12 and Fig.13 This modification example will be described. Fig.12 and Fig.13 2 is a cross-sectional view schematically showing the right half of the stroller body 11 as viewed from the inner side in the width direction. Fig.12 In the embodiment, the seat support body 41 is arranged at the first position. Fig.13 , the seat support body 41 is arranged at the second position.

[0109] exist Fig.12 and Fig.13 In the example shown, the connecting member 60 connecting the seat support body 41 and the main frame 12 is a link member. In this example, the stroller body 11 includes a rear connecting member 66 and a front connecting member 67. Each connecting member 66, 67 is connected to the main frame 12 at one end. Each connecting member 66, 67 can rotate relative to the main frame 12 around a rotation axis extending in the width direction. Each connecting member 66, 67 is connected to the seat support body 41 at the other end. Each connecting member 66, 67 can rotate relative to the seat support body 41 around a rotation axis extending in the width direction. In the example shown, each connecting member 66, 67 is connected to the first link member L1 at one end. One end of each connecting member 66, 67 cannot move in the front-rear direction relative to the main frame 12. In addition, the other end of each connecting member 66, 67 cannot move in the front-rear direction relative to the seat support body 41.

[0110] In such a stroller 10 , the position of the seat support 41 in the main frame 12 can also be changed in the front-rear direction by rotating the connecting members 66 , 67 relative to the main frame 12 and the seat support 41 .

[0111] exist Fig.12 and Fig.13 In the example shown, the locking mechanism 70 can fix the connecting members 66 and 67 relative to the main frame 12. According to such a stroller 10, the possibility of the seat support body 41 accidentally swinging relative to the main frame 12 is suppressed. Fig.12 and Fig.13 In the locking mechanism 70 shown, the locking member 71 can move between a locking position that restricts the rotation of the connecting members 66 and 67 relative to the main frame 12 and a lock release position that allows the rotation of the connecting members 66 and 67 relative to the main frame 12. The locking member 71 is urged toward the locking position by the urging member. By operating the operating portion 72, the locking member 71 can be moved from the locking position to the lock release position.

[0112] exist Fig.12 and Fig.13 In the example shown, the seat support body 41 fixed to the main frame 12 by the locking mechanism 70 is released manually, or the seat support body 41 fixed to the main frame 12 by the locking mechanism 70 may be released by swinging the handle 30 .

[0113] <Variant 6> exist Fig.12 and Fig.13 In the example shown, one end of each connecting member 66, 67 is connected to the first link member L1, but the present invention is not limited thereto. Fig.14 and Fig.15 As shown, one end of each connecting member 66, 67 may also be connected to the third link member L3 in a rotatable manner. In such a stroller 10, by rotating the connecting members 66, 67 relative to the main frame 12 and the seat support 41, the position of the seat support 41 in the main frame 12 can also be changed in the front-rear direction.

[0114] In addition, if Fig.14 and Fig.15 As shown, the stroller body 11 may include a swing limiting portion 85 that limits the swing range of the seat support 41 and the connecting members 66, 67. Fig.14 and Fig.15 In the example shown, when the seat support 41 is located at the first position, the swing restricting portion 85 contacts the front connecting member 67, thereby restricting the seat support 41 and the connecting members 66, 67 from further swinging backward and / or downward. In addition, when the seat support 41 is located at the second position, the swing restricting portion 85 contacts the rear connecting member 66, thereby restricting the seat support 41 and the connecting members 66, 67 from further swinging forward and / or downward. In the case where the stroller body 11 has the swing restricting portion 85, the stroller body 11 may not include the locking mechanism 70.

[0115] <Variant 7> In the above example, the seat support 41 can move together with the back support 45, the canopy support 57, and the protection member 55, but the present invention is not limited thereto. The seat support 41 may not move together with at least one of the back support 45, the canopy support 57, and the protection member 55. For example, at least one of the back support 45, the canopy support 57, and the protection member 55 may not move in the front-rear direction relative to the main frame 12.

[0116] <Variant 8> The handle 30 may be mounted in a manner that does not allow it to swing in the front-rear direction relative to the main body frame 12 .

[0117] The stroller 10 of one embodiment and its modified example described above includes a stroller body 11. The stroller body 11 includes a main frame 12, a seat support unit 40 held by the main frame 12, and a handle 30. The handle 30 is mounted on the main frame 12 in a manner that allows it to swing in the front-rear direction. The seat support unit 40 includes a seat support body 41. The position of the seat support body 41 in the main frame 12 can be changed in the front-rear direction. According to such a stroller 10, by moving the seat support body 41 in the front-rear direction when switching the position of the handle 30, it is possible to suppress the change in the distance in the front-rear direction between the grip portion (middle portion 33) of the handle 30 and the center of gravity of the infant caused by switching the position of the handle 30. As a result, it is possible to suppress the change in the operability of the stroller 10 caused by switching the position of the handle 30. Furthermore, according to such a stroller 10 , by moving the seat support 41 forward relative to the main frame 12 , an infant can be easily placed on or taken away from the seat support 41 and taken care of.

[0118] In the above-described embodiment and its modified example, the main frame 12 includes the lock mechanism 70 capable of fixing the seat support 41 to the main frame 12. According to such a stroller 10, the possibility of the seat support 41 accidentally moving relative to the main frame 12 is suppressed.

[0119] In one embodiment and its modified example described above, the seat support body 41 is movable between a first position and a second position further forward than the first position. The locking mechanism 70 fixes the seat support body 41 in the first position or the second position. According to such a baby carriage 10, the possibility of the seat support body 41 accidentally moving from the first position or the second position is suppressed. In addition, by configuring the seat support body 41 in the first position when the handle 30 is configured in the back push position, and configuring the seat support body 41 in the second position when the handle 30 is configured in the face-to-face push position, it is possible to realize a baby carriage 10 with good operability both when the handle 30 is configured in the back push position and when the handle 30 is configured in the face-to-face push position.

[0120] In the above-described modification, the lock mechanism 70 fixes the seat support 41 to the main frame 12 when the seat support 41 reaches the second position from the first position side or when the seat support 41 reaches the first position from the second position side.

[0121] In the above-described modified example, the main frame 12 includes a locking mechanism 70 that can fix the seat support 41 to the main frame 12. The fixing of the seat support 41 to the main frame 12 by the locking mechanism 70 can be released along with the swinging of the handle 30. According to such a stroller 10, when the handle 30 is swung, the fixing of the seat support 41 to the main frame 12 by the locking mechanism 70 can be automatically released.

[0122] In the above-described modified example, the handle 30 can swing between the back push position and the face-to-face push position. If the handle 30 is moved from the back push position toward the face-to-face push position, or if the handle 30 is moved from the face-to-face push position toward the back push position, the fixing of the seat support body 41 to the main frame 12 by the locking mechanism 70 can be released.

[0123] In one embodiment described above, the main frame 12 includes the front legs 14 and the rear legs 16. The seat support 41 can move between a first position and a second position further forward than the first position. When the stroller body 11 is viewed from the side, the distance D1 in the front-back direction between the first position and the second position is at least one-fourth of the distance D2 between the front legs 14 and the rear legs 16 at the height position of the seat support 41 located in the first position. According to such a stroller 10, the change in the distance in the front-back direction between the center of gravity of the infant on the stroller 10 and the gripping portion 33 of the handle 30 caused by switching the position of the handle 30 can be effectively suppressed, and the change in the operability of the stroller 10 can be effectively suppressed. In addition, according to such a stroller 10, when the seat support 41 is arranged in the second position, the distance between the operator (guardian) located in front of the stroller 10 and the seat support 41 becomes sufficiently close, which can effectively make it easy to put the infant on the seat support 41, take the infant away from the seat support 41, and take care of the infant on the seat support 41.

[0124] In one embodiment and its modified example described above, the seat support unit 40 includes a back support 45. The back support 45 can move together with the seat support 41. According to such a baby carriage 10, even if the position of the seat support 41 relative to the main frame 12 in the front-to-back direction changes, the positional relationship between the seat support 41 and the back support 45 can be maintained. Therefore, before the position of the seat support 41 in the front-to-back direction is changed and after the position of the seat support 41 in the front-to-back direction is changed, the riding comfort of the baby carriage 10 is suppressed from changing. In addition, by moving the back support 45 together with the seat support 41, if the seat support 41 is moved, not only the center of gravity of the seat support 41 but also the center of gravity of the back support 45 will move. As a result, the center of gravity of the seat support unit 40 can be effectively moved in the front-to-back direction along with the movement of the seat support 41. As a result, by moving the seat support body 41 when switching the position of the handle 30, the distance between the center of gravity of the seat support unit 40 and the grip portion 33 of the handle 30 in the front-rear direction can be effectively suppressed, and the operability of the stroller 10 can be effectively suppressed.

[0125] In one embodiment and its modified example described above, the main frame 12 includes the front legs 14 and the rear legs 16. The back support 45 is connected to the seat support 41. When the stroller body 11 is viewed from the side, the seat support unit 40 can move between a first position where the connection A between the seat support 41 and the back support 45 is located behind the rear legs 16 and a second position where the connection A is located in front of the rear legs 16. According to such a stroller 10, by moving the seat support 41 when switching the position of the handle 30, the change in the distance in the front-to-back direction between the center of gravity of the infant on the stroller 10 and the grip 33 of the handle 30 can be effectively suppressed, and the change in the operability of the stroller 10 can be effectively suppressed. In addition, according to such a stroller 10, when the seat support body 41 is arranged in the second position, the distance between the operator (guardian) located in front of the stroller 10 and the seat support body 41 becomes close enough, which can effectively make it easy to place an infant on the seat support body 41, take the infant away from the seat support body 41, and take care of the infant on the seat support body 41.

[0126] In one embodiment and its modified example described above, the main frame 12 includes a front leg 14, a front wheel holding member 18a, a front wheel 18, a rear leg 16, a rear wheel holding member 19a and a rear wheel 19. The front wheel holding member 18a is connected to the front leg 14. The front wheel 18 is held by the front wheel holding member 18a in a manner that allows it to rotate around a front wheel rotation axis 18b extending in a horizontal direction. The rear wheel holding member 19a is connected to the rear leg 16. The rear wheel 19 is held by the rear wheel holding member 19a in a manner that allows it to rotate around a rear wheel rotation axis 19b extending in a horizontal direction. The seat support unit 40 includes a back support body 45 connected to a seat support body 41. The seat support body 41 is movable between a first position and a second position that is further forward than the first position. When the baby carriage body 11 is viewed from the side, the position of the connection portion A of the seat support 41 and the back support 45 in the front-rear direction when the seat support 41 is arranged in the second position is located at a position more than one quarter of the distance D3 in the front-rear direction between the connection portion of the front leg 14 and the front wheel holding member 18a and the connection portion of the rear leg 16 and the rear wheel holding member 19a, respectively. According to such a baby carriage 10, by moving the seat support 41 when switching the position of the handle 30, the change in the distance in the front-rear direction between the center of gravity of the infant in the baby carriage 10 and the grip portion 33 of the handle 30 can be effectively suppressed, and the change in the operability of the baby carriage 10 can be effectively suppressed. In addition, according to such a stroller 10, when the seat support body 41 is arranged in the second position, the distance between the operator (guardian) located in front of the stroller 10 and the seat support body 41 becomes close enough, which can effectively make it easy to place an infant on the seat support body 41, take the infant away from the seat support body 41, and take care of the infant on the seat support body 41.

[0127] In one embodiment and its modified example described above, the main frame 12 includes a front leg 14, a front wheel holding member 18a and a front wheel 18. The front wheel holding member 18a is connected to the front leg 14. The front wheel 18 is held by the front wheel holding member 18a in a manner that it can rotate around the front wheel rotation axis 18b extending in the horizontal direction. The seat support body 41 can move between a first position and a second position that is further forward than the first position. The front wheel 18 can rotate around the front wheel rotation axis 18c extending in the vertical direction. The distance D1 in the front-to-back direction between the first position and the second position is more than twice the distance D5 in the horizontal direction between the front wheel rotation axis 18c and the front wheel rotation axis 18b in a plane perpendicular to the front wheel rotation axis 18b. According to such a baby carriage 10, the change in the distance in the front-to-back direction between the front wheel rotation axis 18b and the center of gravity of the infant on the seat support body 41 caused by the rotation of the front wheel 18 can be eliminated by moving the seat support body 41. This can suppress changes in operability of the stroller 10 due to the rotation of the front wheels 18 .

[0128] In the one embodiment and its modified example described above, the seat support body 41 is movable in the front-rear direction along the rail member (the third link member L3 ) provided on the main body frame 12 .

[0129] In one embodiment and its modified example described above, the main frame 12 includes a first link component L1, a front leg 14, a rear leg 16, a second link component L2, and a third link component L3. The front leg 14 is connected to the first link component L1 and can rotate relative to the first link component L1. The rear leg 16 is connected to the first link component L1 and can rotate relative to the first link component L1. The second link component L2 is connected to the first link component L1 and can rotate relative to the first link component L1. The third link component L3 is arranged between the front leg 14 and the second link component L2 and can rotate relative to the front leg 14 and the second link component L2. The third link component L3 guides the movement of the seat support body 41 in the front-back direction.

[0130] In the above-described embodiment and its modified example, the main frame 12 includes the link members L1 to L4, 14, 16 that make the main frame 12 foldable and deployable. Any one of the link members L1 to L4, 14, 16 guides the movement of the seat support 41.

[0131] In the above-described modification, the seat support body 41 is attached to the main body frame 12 so as to be swingable in the front-rear direction.

[0132] In one embodiment and its modified example described above, the seat support unit 40 includes a canopy support body 57. The canopy support body 57 can move together with the seat support body 41. According to such a stroller 10, even if the position of the seat support body 41 in the front-to-back direction relative to the main frame 12 changes, the positional relationship between the seat support body 41 and the canopy support body 57 (and therefore the canopy) can be maintained. Even if the position of the seat support body 41 in the front-to-back direction is changed, a sunshade environment can be appropriately provided for the infant on the seat support unit 40. In addition, by moving the canopy support body 57 together with the seat support body 41, if the seat support body 41 is moved, not only the center of gravity of the seat support body 41 but also the center of gravity of the canopy support body 57 will move. As a result, the center of gravity of the seat support unit 40 can be effectively moved in the front-to-back direction along with the movement of the seat support body 41. As a result, by moving the seat support body 41 when switching the position of the handle 30, the distance between the center of gravity of the seat support unit 40 and the grip portion 33 of the handle 30 in the front-rear direction can be effectively suppressed, and the operability of the baby stroller 10 can be effectively suppressed.

[0133] In one embodiment and its modified example described above, the seat support unit 40 includes a guard 55. The guard 55 can move together with the seat support body 41. According to such a stroller 10, even if the position of the seat support body 41 in the front-to-back direction relative to the main frame 12 changes, the positional relationship between the seat support body 41 and the guard 55 can be maintained. Therefore, even if the position of the seat support body 41 in the front-to-back direction changes, the infant on the seat support unit 40 can be appropriately protected by the guard 55.

[0134] It should be noted that, although several modified examples of the above embodiment have been described above, it is of course possible to appropriately combine a plurality of modified examples and apply them.

Claims

1. A baby stroller, characterized in that: The invention has a baby stroller body, The baby carriage body comprises: Main frame; a seat support unit held by the main body frame; and a handle mounted on the main frame in a manner that allows it to swing in the front-rear direction, The seat support unit includes a seat support body, The position of the seat support body in the main frame can be changed in the front-rear direction.

2. The baby stroller according to claim 1, characterized in that: The main body frame includes a locking mechanism capable of fixing the seat support body relative to the main body frame.

3. The baby stroller according to claim 2, characterized in that: The seat support body is movable between a first position and a second position further forward than the first position. The locking mechanism fixes the seat support body in the first position or the second position.

4. The baby stroller according to claim 3, characterized in that: The locking mechanism fixes the seat support body with respect to the main frame when the seat support body reaches the second position from the first position side or when the seat support body reaches the first position from the second position side.

5. The baby stroller according to claim 1, characterized in that: The main frame includes a locking mechanism capable of fixing the seat support body relative to the main frame, The fixing of the seat support body to the main body frame by the locking mechanism can be released as the handle is swung.

6. The baby stroller according to claim 5, characterized in that: The handle can be swung between a back-pushing position and a face-to-face pushing position, If the handle is moved from the rear push position toward the face-to-face push position, or if the handle is moved from the face-to-face push position toward the rear push position, fixation of the seat support to the main frame by the locking mechanism can be released.

7. The baby stroller according to claim 1, characterized in that: The main frame includes front legs and rear legs, The seat support body is movable between a first position and a second position further forward than the first position. In a side view, a distance between the first position and the second position in the front-rear direction is at least one quarter of a distance between the front leg and the rear leg at a height position of the seat support body located at the first position.

8. The baby stroller according to claim 1, characterized in that: The seat support unit includes a back support body, The back support is movable with the seat support.

9. The baby stroller according to claim 8, characterized in that: The main frame includes front legs and rear legs, The back support is connected to the seat support, When viewed from the side, the seat support unit is movable between a first position where the connection between the seat support and the back support is located behind the rear legs and a second position where the connection is located in front of the rear legs.

10. The baby stroller according to claim 8, characterized in that: The main framework includes: front legs; A front wheel holding component connected to the front legs; a front wheel held by the front wheel holding member so as to be rotatable about a front wheel rotation axis extending in the horizontal direction; hind legs; a rear wheel holding member connected to the rear legs; and a rear wheel held by the rear wheel holding member so as to be rotatable about a rear wheel rotation axis extending in the horizontal direction, The seat support body is movable between a first position and a second position further forward than the first position. The back support is connected to the seat support, When viewed from the side, the position of the connection portion of the seat support body and the back support body in the front-to-back direction when the seat support body is configured to the second position is located more forward of the connection portion of the rear legs and the rear wheel holding component by more than one quarter of the distance in the front-to-back direction between the connection portion of the front legs and the front wheel holding component and the connection portion of the rear legs and the rear wheel holding component.

11. The baby stroller according to claim 1, characterized in that: The main framework includes: front legs; a front wheel holding member connected to the front legs; and a front wheel held by the front wheel holding member so as to be rotatable about a front wheel rotation axis extending in the horizontal direction, The seat support body is movable between a first position and a second position further forward than the first position. The front wheel holding member can rotate around the front wheel rotation axis extending in the vertical direction. A distance between the first position and the second position in the front-rear direction is at least twice a distance between the front wheel turning axis and the front wheel turning axis in a plane perpendicular to the front wheel turning axis in the horizontal direction.

12. The baby stroller according to claim 1, characterized in that: The seat support body is movable in a front-rear direction along a guide rail provided on the main body frame.

13. The baby stroller according to claim 1, characterized in that: The main framework includes: a first connecting rod member; a front leg connected to the first link member and capable of rotating relative to the first link member; a rear leg connected to the first link member and capable of rotating relative to the first link member; a second link member connected to the first link member and rotatable relative to the first link member; and a third link member, which is disposed between the front leg and the second link member and is rotatable relative to the front leg and the second link member, The third link member guides movement of the seat support body in the front-rear direction.

14. The baby stroller according to claim 1, characterized in that: The main frame includes a link member that allows the main frame to be foldable and unfoldable. Any one of the link members guides the movement of the seat support body.

15. The baby stroller according to claim 1, characterized in that: The seat support body is mounted to the main body frame so as to be swingable in the front-rear direction.

16. The baby stroller according to claim 1, characterized in that: The seat support unit includes a canopy support body, The canopy support is movable together with the seat support.

17. The baby stroller according to claim 1, characterized in that: The seat support unit includes a protective member, The guard is movable together with the seat support.

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