Cushion for baby carriage and baby carriage

Abstract

The invention relates to a seat cushion for a baby carriage and the baby carriage. A seat cushion (3) according to an embodiment is a baby carriage seat cushion attached to a baby carriage (1). The seat cushion (3) comprises a seat surface part (40), a backrest part (50) and a pair of side wall parts (80). The side wall section (80) has reinforcing plates (81, 82), and a connecting member (83) that connects the reinforcing plate (81) and the reinforcing plate (82). The reinforcing plate (81) has an inner surface (81a), an outer surface (81b), and an end surface (81c) connecting the inner surface (81a) and the outer surface (81b). The reinforcing plate (82) has an inner surface (82a), an outer surface (82b), and an end surface (82c) that connects the inner surface (82a) and the outer surface (82b) and that is in contact with the end surface (81c) in an expanded state. The connecting member (83) can be bent at least along the boundary between the reinforcing plate (81) and the reinforcing plate (82), and the connecting member (83) is fixed to the outer surface (81b) and the outer surface (82b) such that the reinforcing plate (81) is bent in a direction in which the angle formed between the outer surface (81b) and the outer surface (82b) is reduced with respect to the reinforcing plate (82) without urging the reinforcing plate (81) and the reinforcing plate (82).

Description

Technical Field

[0001] One aspect of the present disclosure relates to a stroller seat cushion and a stroller. Background Art

[0002] In the past, there is known a baby stroller having a baby stroller body and a seat supported by the baby stroller body (for example, Patent Document 1). The seat for a baby stroller described in Patent Document 1 is configured to be foldable in a manner such that the seat portion and the backrest portion of the seat cushion are close to each other. The seat cushion has a pair of side wall portions arranged on the left and right sides of the seat portion. In addition, each side wall portion is biased by an elastic member in a manner such that it is bent inward in the left-right direction. As a result, it is possible to achieve the effect of preventing the side wall portions from being folded in a manner such that they expand outward in the left-right direction in conjunction with the folding action of the baby stroller (and thus, the side wall portions of the seat cushion are stored in a state clamped by the baby stroller body (frame)).

[0003] Prior art literature Patent Literature Patent Document 1: Japanese Patent Application Publication No. 2016-193653 Summary of the invention

[0004] Technical issues In the structure described in Patent Document 1, there is a concern that the above effect may be weakened (or not obtained) due to the deterioration of the elastic member over time. In addition, even in the unfolded state of the stroller (i.e., the state in which the infant can ride in the stroller), the force applied by the elastic member acts on the side wall portion, so there is a concern that the side wall portion is slightly bent inward in the left-right direction, and the width of the infant's riding space in the left-right direction is compressed by the amount of the above bending. In addition, the space between the outer side of the side wall portion in the left-right direction and the main body (frame) of the stroller increases the amount of the above bending, which may also cause a problem that a part of the infant's body, toys, etc. are easily caught in the space.

[0005] An object of one aspect of the present disclosure is to provide a baby stroller seat cushion that can prevent a baby's riding space from being compressed when the baby stroller is unfolded and can prevent a side wall from folding in a manner that spreads outward in the left-right direction when the baby stroller is folded, and a baby stroller having the above-mentioned baby stroller seat cushion.

[0006] Technical Solution A baby stroller seat cushion according to one aspect of the present disclosure is mounted on a baby stroller that can be folded from an unfolded state to a folded state, and the baby stroller seat cushion comprises: a seat portion; a backrest portion connected to the seat portion; and a pair of side walls arranged on both sides of the seat portion in the left-right direction in the unfolded state. The side wall portion comprises: a first reinforcing plate; a second reinforcing plate arranged on the side opposite to the side where the seat portion is located with respect to the first reinforcing plate; and a connecting member connecting the first reinforcing plate and the second reinforcing plate. The first reinforcing plate comprises: a first inner surface facing the side where the seat portion is located in the left-right direction; a first outer surface on the side opposite to the first inner surface; and a first end surface connecting the first inner surface and the first outer surface and contacting the second reinforcing plate in the unfolded state. The second reinforcing plate comprises: a second inner surface facing the side where the seat portion is located in the left-right direction; a second outer surface on the side opposite to the second inner surface; and a second end surface connecting the second inner surface and the second outer surface and contacting the first end surface in the unfolded state. The connecting component can be bent at least along the boundary between the first reinforcing plate and the second reinforcing plate. The connecting component is fixed to the first outer surface and the second outer surface in a manner that the first reinforcing plate is bent relative to the second reinforcing plate in a direction in which the angle between the first outer surface and the second outer surface is reduced without applying force to the first reinforcing plate and the second reinforcing plate.

[0007] In the above-mentioned baby stroller seat, each side wall portion has a first reinforcing plate and a second reinforcing plate connected to each other via a connecting member. The connecting member can be bent at least along the boundary between the first reinforcing plate and the second reinforcing plate. As a result, the first reinforcing plate can be bent relative to the second reinforcing plate in a direction in which the first outer surface and the second outer surface approach each other (that is, the side wall portion is bent in a manner protruding inwardly in the left-right direction). On the other hand, since the connecting member is fixed to the outer surface of each reinforcing plate (that is, the first outer surface and the second outer surface), the edge portion of the first end surface of the first reinforcing plate connected to the first outer surface and the edge portion of the second end surface of the second reinforcing plate connected to the second outer surface are maintained in a state of contact (or proximity). That is, the first reinforcing plate is prevented from being bent relative to the second reinforcing plate in a direction in which the first inner surface and the second inner surface approach each other (that is, the side wall portion is bent in a manner protruding outwardly in the left-right direction). Therefore, when the baby stroller is folded, the side wall portion is prevented from being folded in a manner extending outwardly in the left-right direction. Furthermore, the connecting component connects the first reinforcing plate and the second reinforcing plate in a manner that does not apply force to the first reinforcing plate and the second reinforcing plate so that the first reinforcing plate is bent relative to the second reinforcing plate in a direction in which the angle between the first outer surface and the second outer surface decreases. That is, in the unfolded state, the connecting component is configured not to encourage the side wall portion to bend in a manner that protrudes inward in the left-right direction. Thus, in the unfolded state, the state in which the first reinforcing plate and the second reinforcing plate are parallel (that is, the state in which the first end surface is in contact with the second end surface and the first outer surface is coplanar with the second outer surface) is appropriately maintained, and the riding space of infants and young children is prevented from being compressed by the side wall portion.

[0008] The connecting member may also include a belt member, which is arranged in a manner spanning the first outer surface and the second outer surface and is attached to the first outer surface and the second outer surface. According to the above structure, by connecting the first reinforcing plate and the second reinforcing plate with the belt member, the first outer surface and the second outer surface can be more reliably kept in a coplanar state in the unfolded state. As a result, it is possible to prevent the second end surface from being offset relative to the first end surface in the unfolded state, and the first reinforcing plate and the second reinforcing plate from overlapping each other (as a result, the first reinforcing plate is prevented from bending relative to the second reinforcing plate when the folding action is performed).

[0009] The connecting member may also include a cloth member that is arranged so as to span the first outer surface and the second outer surface and is sewn to the first reinforcing plate and the second reinforcing plate, respectively. For example, when a belt member is used as the connecting member, there is a concern that the belt member may be peeled off from the first outer surface or the second outer surface due to a decrease in the adhesive force of the belt member over time. On the other hand, according to the above-mentioned structure using a cloth member as the connecting member, by sewing the cloth member that is attached to the outer surface (first outer surface and second outer surface) of each reinforcing plate to each reinforcing plate, it is possible to prevent the connecting member from falling off from the first reinforcing plate and the second reinforcing plate, and the first reinforcing plate and the second reinforcing plate can be connected more stably.

[0010] The connecting member may further include: a belt member, which is arranged so as to span the first outer surface and the second outer surface and is attached to the first outer surface and the second outer surface; and a cloth member, which is arranged so as to span the first outer surface and the second outer surface and is sewn to the first reinforcing plate and the second reinforcing plate, respectively. According to the above structure, the effects of both the belt member and the cloth member can be obtained. That is, by using the cloth member, the first reinforcing plate and the second reinforcing plate can be connected more stably, and by using the belt member, the second end face can be prevented from being offset relative to the first end face.

[0011] The belt member and the cloth member may have a mutually overlapping portion, and in the above portion, the belt member may be arranged between the cloth member and the first reinforcing plate and the second reinforcing plate. According to the above structure, in the portion where the belt member and the cloth member overlap, the belt member can be appropriately protected by the cloth member. That is, the surface of the belt member in the above portion is prevented from being exposed to the outside. As a result, damage to the belt member caused by external impacts, etc., generated when using the baby carriage, etc., can be suppressed, and the belt member can be suppressed from peeling off from the first outer surface or the second outer surface.

[0012] In the above-mentioned part, the belt member may be sewn to the first reinforcing plate and the second reinforcing plate together with the cloth member. According to the above-mentioned structure, since the belt member is firmly fixed (sewn) to the first reinforcing plate and the second reinforcing plate together with the cloth member, it is possible to more effectively prevent the belt member from peeling off from the first outer surface or the second outer surface.

[0013] The length of the cloth component along the boundary between the first reinforcing plate and the second reinforcing plate may be longer than the length of the belt component along the boundary. When the belt component having an adhesive material is sewn together with the cloth component and each reinforcing plate, there is a concern that the adhesive material constituting the belt component adheres to the sewing machine needle used in sewing, etc., causing abnormal operation of the sewing machine. As described above, by making the cloth component longer than the belt component, the ratio of the area where the belt component is sewn together with the cloth component to the overall area where the cloth component is sewn to each reinforcing plate can be reduced. As a result, the occurrence of a malfunction caused by the adhesive material of the belt component as described above can be suppressed.

[0014] The side wall portion may include an inner fabric, an outer fabric disposed at a position further outward than the inner fabric, an inner reinforcement fabric disposed at a position further outward than the inner fabric and further inward than the outer fabric, and an outer reinforcement fabric disposed further inward than the outer fabric and further outward than the inner reinforcement fabric, the first reinforcement plate, the second reinforcement plate, and the connecting member may be accommodated between the inner reinforcement fabric and the outer reinforcement fabric, and the first reinforcement plate and the second reinforcement plate may be fixed to at least one of the inner reinforcement fabric and the outer reinforcement fabric. In the above structure, in a state where each reinforcement plate is sandwiched by the inner reinforcement fabric and the outer reinforcement fabric, the outer side thereof is further covered by the inner fabric and the outer fabric. By protecting each reinforcing plate with a double layer of fabric in this way, when an impact is applied to the side wall portion from the outside, even if the fabric (inner fabric and outer fabric) exposed to the outside of the side wall portion is damaged, the reinforcing fabric (inner reinforcing fabric and outer reinforcing fabric) can prevent each reinforcing plate from being exposed to the outside. As a result, it is possible to prevent the appearance from being deteriorated due to the reinforcing plate being exposed to the outside, and the reinforcing plate from being damaged due to the contact between the reinforcing plate exposed to the outside and the main body of the baby carriage.

[0015] A baby stroller according to one aspect of the present disclosure includes the above-described baby stroller seat and a baby stroller body that supports the above-described baby stroller seat and is deformable from an unfolded state to a folded state.

[0016] According to the above stroller, the above stroller seat cushion can prevent the infant's riding space from being compressed when the stroller is unfolded, and can prevent the side wall from folding outward in the left-right direction when the stroller is folded.

[0017] Technical Effects According to one aspect of the present disclosure, a stroller seat cushion can be provided that can prevent the seating space of an infant from being compressed when the stroller is unfolded and can prevent the side wall from folding in a manner that expands outward in the left-right direction when the stroller is folded, and a stroller having the above-mentioned stroller seat cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a perspective view of a baby stroller showing a state where a seat cushion according to an embodiment is installed.

[0019] Figure 2 It is shown Figure 1 A perspective view of a baby stroller with a seat cushion removed.

[0020] Figure 3 It is shown Figure 2A side view of the stroller in the unfolded state.

[0021] Figure 4 It is shown Figure 2 Side view of the stroller in the folded state.

[0022] Figure 5 Observed from the front side Figure 1 Top view of the seat cushion.

[0023] Figure 6 Observed from the back side Figure 1 Top view of the seat cushion.

[0024] Figure 7 It is a plan view of the first reinforcing plate, the second reinforcing plate, and the connecting member viewed from the outside in the left-right direction in the unfolded state.

[0025] Figure 8 It is along Figure 7 Cross-sectional view along line VIII-VIII.

[0026] Fig. 9 The figure schematically shows the first reinforcing plate, the second reinforcing plate, and the connecting member when the unfolded state is shifted to the folded state.

[0027] Fig.10 It is shown Figure 1 A top view of the stroller in a folded state.

[0028] Fig.11 It is a diagram schematically showing the fabric structure of the side wall portion.

[0029] Explanation of symbols 1…stroller, 3…seat cushion (stroller cushion), 40…seat portion, 50…backrest portion, 80…side wall portion, 81…reinforcement plate (first reinforcement plate), 81a…inner surface (first inner surface), 81b…outer surface (first outer surface), 81c…end surface (first end surface), 82…reinforcement plate (second reinforcement plate), 82a…inner surface (second inner surface), 82b…outer surface (second outer surface), 82c…end surface (second end surface), 83…connecting member, 801…inner fabric, 802…outer fabric, 803…inner reinforcement fabric, 804…outer reinforcement fabric, 831…belt member, 832…fabric member. DETAILED DESCRIPTION

[0031] Hereinafter, one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, the same reference numerals are used for the same or corresponding elements, and repeated descriptions are omitted.

[0032] use Figure 1 to Figure 4The baby carriage 1 of this embodiment will be described. The baby carriage 1 is configured to be foldable. That is, the baby carriage 1 is configured to be switchable. Figure 1 to Figure 3 The expanded state shown and Figure 4 The unfolded state refers to a state in which the stroller body 2 is expanded (unfolded) so that an infant can sit in the stroller 1. The folded state refers to a state in which the stroller body 2 is folded in order to compactly store the stroller 1.

[0033] In this specification, unless otherwise specified, the terms "front", "rear", "left", "right", "up", "down", "front-rear direction", "left-right direction", and "up-down direction" with respect to the baby carriage 1 refer to the "front", "rear", "left", "right", "up", "down", "front-rear direction", "left-right direction", and "up-down direction" with respect to the infant riding in the unfolded baby carriage 1 as a reference. When the ground contact surface of the baby carriage 1 is a horizontal plane, the "front-rear direction" is the forward and backward direction of the baby carriage 1 parallel to the ground contact surface. In addition, the "up-down direction" is a direction perpendicular to the front-rear direction and perpendicular to the ground contact surface. In addition, the "left-right direction" is a direction perpendicular to both the front-rear direction and the up-down direction.

[0034] exist Figure 1 to Figure 4 , the "front and rear direction" is represented by the X-axis direction, the "left and right direction" is represented by the Y-axis direction, and the "up and down direction" is represented by the Z-axis direction. The negative direction side of the X-axis direction is equivalent to the "front", and the positive direction side of the X-axis direction is equivalent to the "back". In addition, the positive direction of the Y-axis direction is equivalent to the "right", and the negative direction side of the Y-axis direction is equivalent to the "left". In addition, the positive direction of the Z-axis direction is equivalent to the "up", and the negative direction of the Z-axis direction is equivalent to the "down". It should be noted that in the "left and right direction", the side closer to the infant sitting in the stroller 1 (the center of the stroller 1 in the left and right direction) is called the inner side, and the side away from the infant is called the outer side.

[0035] like Figure 1 and Figure 2 As shown, the stroller 1 includes a stroller body 2 and a seat 3 (stroller seat) attached to the stroller body 2. The stroller body 2 includes a main body frame 10, and a handle 20 and a seat support 30 connected to the main body frame 10. Figure 1 and Figure 2 Each of them is a perspective view showing the stroller 1 in the unfolded state. Figure 1 2 is a diagram showing a state where the seat cushion 3 is mounted on the stroller body 2. Figure 2 The figure shows a state where the seat cushion 3 is removed from the stroller body 2 .

[0036] The main frame 10 has a pair of front legs 11 provided on the left and right sides, a pair of rear legs 12 provided on the left and right sides, and a pair of armrests 13 provided on the left and right sides. The upper end of each front leg 11 is rotatably connected to the front end of the armrest 13, which is arranged on the side (left or right) corresponding to each front leg 11. Similarly, the upper end of each rear leg 12 is rotatably connected to the front end of the armrest 13, which is arranged on the side (left or right) corresponding to each rear leg 12. The rear end of each armrest 13 is connected to the middle part of the rear leg 12 via a link member 14 and a rotating bracket 15, and the rear leg 12 is arranged on the side (left or right) corresponding to each armrest 13. A protrusion 14a is provided at the upper end of the link member 14, and the protrusion 14a is used to connect to a connecting member 101 provided on the side wall portion 80 described later. The protrusion 14 a is formed in a pin shape extending upward in parallel with the link member 14 .

[0037] The handle 20 is connected to the main frame 10 constructed as described above in a swingable manner. Figure 1 and Figure 2 As shown, the handle 20 is formed in a U shape. Figure 1 to Figure 3 In the back-to-back pushing state shown in the figure (i.e., the state in which the operator (protector) holds the handle 20 from the back side of the infant riding in the baby carriage 1 to operate the baby carriage 1), each part at both ends of the handle 20 is connected to the link member 14 on the side (left or right) corresponding to each part in a manner that maintains a state parallel to the link member 14. It should be noted that the handle 20 can also be configured to be able to move the handle portion of the handle 20 toward the front of the infant riding in the baby carriage 1 relative to the main frame 10 along the Figure 3 In this case, the operator can control the baby carriage by holding the handle 20 from the side of the front leg 11 facing the infant. That is, the baby carriage 1 can be driven in such a way that the side of the rear leg 12 of the baby carriage 1 is in front of the traveling direction. In such a face-to-face pushing state, the handle 20 and the link member 14 are not parallel. An operating portion 20a for switching between the unfolded state and the folded state is provided in the central portion of the handle 20. By operating the operating portion 20a, it is possible to switch between a locked state for maintaining the unfolded state or the folded state and an unlocked state for switching between the unfolded state and the folded state.

[0038] As described below, the baby carriage 1 can be moved from the unfolded state (see FIG. Figure 1 to Figure 3 ) to the folded state (refer to Figure 4 )fold.

[0039] In this embodiment, as an example, Figure 1 to Figure 3When the baby carriage 1 in the unfolded state shown in the figure is folded, the handle 20 is temporarily lifted upward and then pushed downward while the operation portion 20a is operated to be unlocked. With the folding operation, the link member 14 and the rotating bracket 15 are separated from the rear legs 12, and the rotating bracket 15 is moved relative to the rear legs 12. Figure 3 and Figure 4 In addition, with this action, the armrest 13 and the seat support frame 31 are rotated relative to the link member 14. Figure 3 and Figure 4 It should be noted that since the link member 14 is arranged in parallel with the handle 20, the link member 14 is Figure 3 and Figure 4 The handle 20 is hidden inside.

[0040] like Figure 4 As shown, the baby carriage 1 can be folded by the above-mentioned folding operation. Figure 4 As shown, by placing the baby carriage 1 in the folded state, the size of the baby carriage 1 in the front-rear direction (X-axis direction) can be made smaller than the size of the baby carriage 1 in the unfolded state. It should be noted that to unfold the baby carriage 1 from the folded state, the reverse operation of the folding operation can be performed.

[0041] like Figure 2 As shown, the seat cushion support portion 30 supports the seat cushion 3 in a tiltable manner. The seat cushion support portion 30 includes a seat surface support frame 31 , a backrest support frame 32 , a base cushion 33 , an upper frame 34 , and a connecting frame 35 .

[0042] The seat support frame 31 is a frame member located below the buttocks of an infant riding in the baby carriage 1. The backrest support frame 32 is connected to the seat support frame 31 in a swingable manner and is located behind the back of the infant riding in the baby carriage 1. For example, each of the seat support frame 31 and the backrest support frame 32 can be formed of a metal pipe having a U-shape as a whole.

[0043] The base cushion 33 is a fabric member stretched over the seat support frame 31 and the back support frame 32. The base cushion 33 includes a seat support portion 331 supporting a seat portion 40 of the seat cushion 3 described later and a back support portion 332 supporting a backrest portion 50 of the seat cushion 3 described later.

[0044] The upper frame 34 is a U-shaped frame member disposed substantially parallel to the back support frame 32 at a position above the back support frame 32. The connecting frame 35 is a frame member connecting the back support frame 32 and the upper frame 34.

[0045] use Figure 5 and Figure 6 , the seat cushion 3 mounted on the seat cushion support portion 30 will be described. Figure 5 This is a plan view of the seat cushion 3 viewed from the front 4a side (the side where infants sit) in a state where the seat portion 40 and the backrest portion 50 are stretched to be parallel to each other. Figure 6 is viewed from the back side 4b Figure 5 This is a top view of the seat cushion 3 in the same state.

[0046] The seat cushion 3 is made of a cushioning material, for example, and provides a comfortable ride for an infant sitting on the front surface 4a of the seat cushion 3. The seat cushion 3 includes a seat surface 40, a backrest 50, a surrounding portion 60, a cover 70, and a pair of side walls 80.

[0047] The seat surface portion 40 is supported by a seat surface support portion 331 of a base cushion 33 held by a seat surface support frame 31 , and mainly supports the buttocks of an infant sitting in the baby carriage 1 .

[0048] The backrest portion 50 is connected to the seat portion 40 and is located behind the seat portion 40. The backrest portion 50 is supported by the back support portion 332 of the base cushion 33 held by the back support frame 32 and is disposed at a position facing the back of an infant riding in the stroller 1.

[0049] The seat portion 40 and the backrest portion 50 are connected to each other by, for example, sewing each other. In this case, a connection line L1 formed by a seam is formed between the seat portion 40 and the backrest portion 50. The seat portion 40 and the backrest portion 50 approach each other as the baby carriage 1 is tilted or folded. At this time, the seat portion 40 and the backrest portion 50 swing relative to each other with the connection line L1 as the swing axis.

[0050] The surrounding portion 60 is connected to the edge of the backrest 50 except for the edge (connection line L1) connected to the seat surface 40. The surrounding portion 60 is a portion that covers and protects the upper and side parts of the upper body of the infant riding in the stroller 1. That is, the surrounding portion 60 includes a portion that functions as a headrest to protect the head of the infant. The surrounding portion 60 is, for example, sewn to the backrest 50, and the connection portion between the backrest 50 and the surrounding portion 60 is divided by a substantially U-shaped sewing line.

[0051] The cover portion 70 is a cover-shaped member connected to the edge of the surrounding portion 60 on the side opposite to the side connected to the backrest portion 50 and is provided to cover the back side of the surrounding portion 60. Figure 1 As shown, when the seat cushion 3 is mounted on the seat cushion support portion 30, the connection portion between the surrounding portion 60 and the cover portion 70 is along the upper frame 34 (refer to Figure 2 ), and the cover portion 70 is covered in a manner covering the upper frame 34 and the connecting frame 35. Thus, the surrounding portion 60 is stably fixed.

[0052] The pair of side walls 80 are arranged on both sides of the seat portion 40 in the left-right direction (Y-axis direction) in the unfolded state. The side wall portions 80 are arranged between the seat portion 40 and the backrest portion 50, and play a role in protecting the infant sitting in the stroller 1 from the side. The side wall portions 80 are configured to be Figure 1 ) is not directly supported by the seat cushion support portion 30 and maintains a state of standing approximately vertically relative to the seat surface portion 40.

[0053] A protrusion 85 that extends toward the protrusion 14a of the link member 14 in the expanded state is provided at the end of each side wall portion 80 on the side away from the seat portion 40 and the backrest portion 50. A connecting member 101 that is connected to the protrusion 14a is provided on the back surface 4b of the protrusion 85. As an example, the connecting member 101 is a buckle belt having a belt portion 101a fixed to the protrusion 85 and a pair of buckles 101b (a pair of buckles that fit together) provided at both ends of the belt portion 101a. By wrapping the belt portion 101a around the side of the protrusion 14a and locking the pair of buckles 101b to each other (i.e., the concave portion and the convex portion to each other), as shown in FIG. Figure 1 As shown in FIG. 1 , the connecting member 101 is fixed to the protrusion 14 a . Thus, the standing posture of the side wall portion 80 in the expanded state becomes stable.

[0054] The seat cushion 3 has a connecting member 102 (see FIG. 1 ) provided near the boundary (connection line L1) connecting the seat portion 40 and the backrest portion 50 (in the present embodiment, near both ends of the connection line L1 in the left-right direction (Y-axis direction)). Figure 6 ). The connecting member 102 has the same structure as the connecting member 101. The connecting member 102 is a buckle belt having a belt portion 102a fixed to the back surface 4b of the seat cushion 3 and a pair of buckles 102b provided at both ends of the belt portion 102a. By winding the belt portion 102a around the side surface of the link member 14 and locking the pair of buckles 102b (i.e., the concave portion and the convex portion) to each other, the seat cushion 3 can be connected to the connecting member 101. Figure 1 As shown, the connecting member 102 is fixed to the link member 14. Thus, the seat cushion 3 can be fixed to the seat cushion support portion 30 via the connecting member 102, and the boundary portion (connecting line L1) between the seat surface portion 40 and the backrest portion 50 of the seat cushion 3 can be aligned at an appropriate position.

[0055] It should be noted that the seat cushion 3 may be further fixed to the seat cushion support portion 30 (for example, the bottom seat cushion 33 ) by a fixing member (not shown) other than the connecting members 101 and 102 .

[0056] The seat surface 40, the backrest 50, and the surrounding portion 60 that can directly contact the infant riding in the stroller 1 can be formed using, for example, a fabric having a cushioning property. Specific examples of such a fabric include a fabric formed by sandwiching a material such as a sponge between two fabrics, a fabric formed by a fabric having a cushioning property, and the like. In addition, at least a portion of the side wall 80 that is arranged on the inner side in the left-right direction (an inner fabric 801 described later) can also directly contact the infant, and therefore can be formed of a fabric having a cushioning property.

[0057] Next, the structure of the pair of side wall portions 80 provided in the seat cushion 3 will be described in detail. The structures of the side wall portions 80 are the same as each other, so in the following description, the side wall portion 80 disposed on the left side will be described. Figure 5 and Figure 6 As shown, the side wall portion 80 has a generally fan-shaped shape defined by edges 80a, 80b, and 80c. The edge 80a is an edge along the boundary between the side wall portion 80 and the seat surface portion 40 and the backrest portion 50. The edge 80b is an edge extending from the rear end portion 80a1 (the end connected to the backrest portion 50) of the edge 80a in a direction generally perpendicular to the edge 51 of the backrest portion 50. The above-mentioned protrusion 85 is provided on the outside of the edge 80b. The edge 80c is an edge extending in an arc shape from the front end portion 80a2 of the edge 80a to the outer end portion of the edge 80b.

[0058] like Figure 7 to Figure 9 As shown, the side wall portion 80 includes a reinforcing plate 81 (first reinforcing plate), a reinforcing plate 82 (second reinforcing plate), and a connecting member 83 . Figure 7 It is a plan view of the reinforcing plate 81 , the reinforcing plate 82 , and the connecting member 83 as viewed from the outside in the left-right direction (Y-axis direction) in the expanded state. Figure 8 It is along Figure 7 Cross-sectional view along line VIII-VIII. Fig. 9 1 and 2 are diagrams schematically showing the reinforcing plates 81 and 82 and the connecting member 83 when the unfolded state is shifted to the folded state.

[0059] like Figure 5 As shown, the reinforcing plate 81 is arranged in the area along the edge 80a. The reinforcing plate 81 is a member that is less likely to deform (has higher rigidity) than other parts of the side wall portion 80 (each fabric that constitutes the side wall portion 80 described later). The reinforcing plate 81 is, for example, a plate-shaped member formed of a resin such as polypropylene. The reinforcing plate 82 is arranged on the side opposite to the side where the seat surface portion 40 is located with respect to the reinforcing plate 81. The reinforcing plate 82 is, for example, a plate-shaped member formed of the same material as the reinforcing plate 81.

[0060] The reinforcing plates 81 and 82 are in contact with each other and are arranged in parallel in the unfolded state. The boundary between the reinforcing plates 81 and 82 forms a fold line L2 extending straightly from the end where the connecting line L1 intersects the edge 80a (i.e., the boundary between the seat surface 40, the backrest 50, and the side wall 80) to the approximate center of the edge 80c. The reinforcing plate 81 is arranged in the area between the edge 80a and the fold line L2. The reinforcing plate 82 is arranged in the area between the fold line L2 and the edge 80b. Fig.10 As shown, in the folded state, the side wall portion 80 is folded in half along the fold line L2 so as to protrude inward in the left-right direction (Y-axis direction). Fig.10 It is a top view of the baby carriage 1 in a folded state.

[0061] The reinforcing plate 81 has an inner surface 81a (first inner surface), an outer surface 81b (first outer surface) and an end surface 81c (first end surface). The inner surface 81a is a surface facing the side where the seat surface portion 40 is located in the left-right direction (Y-axis direction) in the unfolded state. The outer surface 81b is a surface on the opposite side to the inner surface 81a. The end surface 81c is a surface connecting the inner surface 81a and the outer surface 81b. The end surface 81c is a surface extending perpendicularly to the inner surface 81a and the outer surface 81b. The end surface 81c is opposite to and in contact with the end surface 82c of the reinforcing plate 82 in the unfolded state (i.e., the state in which the reinforcing plate 81 and the reinforcing plate 82 are arranged in parallel). The inner surface 81a, the outer surface 81b and the end surface 81c are all flat surfaces.

[0062] The reinforcing plate 82 has an inner surface 82a (second inner surface), an outer surface 82b (second outer surface) and an end surface 82c (second end surface). The inner surface 82a is a surface facing the side where the seat surface portion 40 is located in the left-right direction (Y-axis direction) in the unfolded state. The inner surface 82a is a surface that is coplanar and continuous with the inner surface 81a of the reinforcing plate 81 in the unfolded state. The outer surface 82b is a surface on the opposite side to the inner surface 82a. The outer surface 82b is a surface that is coplanar and continuous with the outer surface 81b of the reinforcing plate 81 in the unfolded state. The end surface 82c is a surface that connects the inner surface 82a and the outer surface 82b. The end surface 82c is a surface that extends perpendicularly to the inner surface 82a and the outer surface 82b. The end surface 82c is opposite to and in contact with the end surface 81c of the reinforcing plate 81 in the unfolded state. The inner surface 82a, the outer surface 82b and the end surface 82c are all flat surfaces.

[0063] The connecting member 83 is a member that connects the reinforcing plate 81 and the reinforcing plate 82. The connecting member 83 is fixed to the outer surface 81b of the reinforcing plate 81 and the outer surface 82b of the reinforcing plate 82 in a manner that straddles the reinforcing plate 81 and the reinforcing plate 82. The connecting member 83 is configured to be bendable along at least the boundary between the reinforcing plate 81 and the reinforcing plate 82, that is, the fold line L2. In the present embodiment, the connecting member 83 is formed of a soft material as a whole, so that it can be bent along the fold line L2.

[0064] The connecting member 83 is fixed to the outer surface 81b and the outer surface 82b in a manner that the reinforcing plate 81 and the reinforcing plate 82 are bent in a direction in which the angle formed by the outer surface 81b and the outer surface 82b is reduced (i.e., the direction in which the outer surface 81b and the outer surface 82b approach each other) without applying force to the reinforcing plate 81 and the reinforcing plate 82. For example, in the case where the connecting member 83 is composed of an elastic member such as rubber that contracts along the in-plane direction of the outer surface 81b and the outer surface 82b, the reinforcing plate 81 and the reinforcing plate 82 are forced to be bent in a direction in which the outer surface 81b and the outer surface 82b approach each other due to the contraction force of the connecting member 83. As a result, in the unfolded state, there is a concern that the reinforcing plate 81 is tilted relative to the reinforcing plate 82 in a manner that the angle formed by the outer surface 81b and the outer surface 82b is smaller than 180 degrees. That is, in the unfolded state, there is a concern that the side wall portion 80 protrudes slightly inward in the left-right direction (Y-axis direction). In contrast, the connection member 83 of the present embodiment is configured so as not to promote the bending of the reinforcing plate 81 relative to the reinforcing plate 82 in the direction in which the outer surface 81b and the outer surface 82b approach each other. That is, the connection member 83 is composed of a member that does not shrink along the in-plane direction of the outer surface 81b and the outer surface 82b. In the present embodiment, the connection member 83 is composed of a belt member 831 and a cloth member 832.

[0065] The belt member 831 is arranged so as to span the outer surface 81b and the outer surface 82b and is attached to the outer surface 81b and the outer surface 82b. The belt member 831 may be composed of a fiber-reinforced belt (such as a long ribbon). Figure 7 As shown in FIG. 1 , the belt member 831 is formed in a rectangular shape. The belt member 831 extends along the fold line L2 so that the center of the belt member 831 in the width direction D2 (the direction in which the end surface 81c and the end surface 82c are opposite) is substantially aligned with the fold line L2. The length of the belt member 831 in the direction D1 along the fold line L2 is longer than the length of the belt member 831 in the width direction D2. In the present embodiment, the belt member 831 is away from the ends of the reinforcing plates 81 and 82 in the direction D1.

[0066] By providing the belt member 831 as described above, the edge portion 81d (see Fig. 9) and the edge 82d between the outer surface 82b and the end surface 82c of the reinforcing plate 82 (see Fig. 9 ) are contacted to fix the reinforcing plate 81 and the reinforcing plate 82 to each other. That is, by using the belt member 831, the edge portions 81d and 82d can be easily and accurately aligned with each other.

[0067] The cloth member 832 is arranged so as to straddle the reinforcing plate 81 and the reinforcing plate 82, and is sewn to the reinforcing plate 81 and the reinforcing plate 82, respectively. The cloth member can be made of, for example, a nylon belt, a polyester belt, or the like. Figure 7 As shown, the cloth part 832 is formed in a rectangular shape. The cloth part 832 extends along the fold line L2 in such a manner that the center of the cloth part 832 in the width direction D2 is substantially consistent with the fold line L2. The length of the cloth part 832 in the direction D1 is longer than the length of the belt part 831 in the direction D1. That is, in the direction D1, the cloth part 832 extends to a position further outward than the belt part 831. The cloth part 832 extends to the vicinity of the ends of the reinforcing plates 81, 82 in the direction D1. On the other hand, the length of the cloth part 832 in the width direction D2 is shorter than the length of the belt part 831 in the width direction D2. That is, in the width direction D2, the belt part 831 extends to a position further outward than the cloth part 832.

[0068] In this embodiment, the belt member 831 and the cloth member 832 are arranged as described above, so there is a portion where the belt member 831 and the cloth member 832 overlap each other. In addition, in the above portion, the belt member 831 is arranged between the cloth member 832 and the reinforcing plates 81, 82. That is, the cloth member 832 is arranged so as to cover the belt member 831.

[0069] like Figure 7 and Figure 8 As shown, the fabric member 832 is sewn to the reinforcing plate 81 and the belt member 831 along two sewing lines SL1 and SL2 parallel to the fold line L2. The sewing line SL1 is along the end of the fabric member 832 that is farther from the reinforcing plate 82 in the width direction D2. The sewing line SL2 is along the fold line L2 at a position slightly offset from the fold line L2 to the reinforcing plate 81 side.

[0070] Similarly, the fabric member 832 is sewn to the reinforcing plate 82 and the belt member 831 along two sewing lines SL3 and SL4 parallel to the fold line L2. The sewing line SL3 runs along the end of the fabric member 832 that is farther from the reinforcing plate 81 in the width direction D2. The sewing line SL4 runs along the fold line L2 at a position slightly offset from the fold line L2 to the reinforcing plate 82 side.

[0071] In the above-mentioned reinforcing plates 81, 82 and connecting member 83, as Fig. 9As shown in FIG. 1 , both the belt member 831 and the cloth member 832 constituting the connecting member 83 can be moved along the fold line L2 (see FIG. 1 ). Figure 7 ). Thus, the reinforcing plate 81 is configured to be able to bend relative to the reinforcing plate 82 in a direction in which the outer surface 81b and the outer surface 82b approach each other. The above structure is achieved by arranging the connecting member 83 on the outer surface 81b, 82b side of the reinforcing plates 81, 82. That is, the edge 81e between the inner surface 81a and the end surface 81c is configured to be able to be separated from the edge 82e between the inner surface 82a and the end surface 82c, so that the reinforcing plate 81 can be bent relative to the reinforcing plate 82 as described above. On the other hand, by using the connecting member 83 (particularly the belt member 831), the edge 81d between the outer surface 81b and the end surface 81c is fixed relative to the edge 82d in a manner not to be separated from the edge 82d between the outer surface 82b and the end surface 82c. Thus, the reinforcing plate 81 is prevented from being bent relative to the reinforcing plate 82 in a direction in which the edge 81d and the edge 82d are separated (that is, the direction in which the inner surface 81a and the inner surface 82a approach each other).

[0072] like Fig.11 As shown, the side wall portion 80 includes an inner fabric 801 , an outer fabric 802 , an inner reinforcement fabric 803 , and an outer reinforcement fabric 804 . Fig.11 : is a diagram schematically showing the fabric structure of the side wall portion 80. The inner fabric 801 is a fabric arranged at the innermost side of the side wall portion 80 and includes the front face 4a facing the infant riding in the stroller 1. The outer fabric 802 is a fabric arranged at a position further outward (outermost side of the side wall portion 80) than the inner fabric 801 and includes the back face 4b exposed to the outside in the left-right direction (Y-axis direction) in the unfolded state. The inner reinforcement fabric 803 is a fabric arranged at a position further outward than the inner fabric 801 and further inward than the outer fabric 802. The outer reinforcement fabric 804 is a fabric arranged further inward than the outer fabric 802 and further outward than the inner reinforcement fabric 803. The inner fabric 801 is a portion that contacts the skin of the infant, and therefore can be made of a relatively soft fabric such as a polyester knitted fabric. The outer fabric 802 , the inner reinforcement fabric 803 , and the outer reinforcement fabric 804 may be made of, for example, polyester woven fabric or the like.

[0073] The reinforcing plates 81, 82 and the connecting member 83 are accommodated between the inner reinforcing fabric 803 and the outer reinforcing fabric 804. In addition, the reinforcing plates 81, 82 are fixed to at least one of the inner reinforcing fabric 803 and the outer reinforcing fabric 804. Fig.11As shown, the reinforcing plates 81 and 82 are sewn to the outer reinforcing fabric 804 along the above-mentioned sewing lines SL1 to SL4 together with the connecting member 83. In addition, the outer edges of the reinforcing plates 81 and 82 are sewn to the outer reinforcing fabric 804 along the sewing lines SL5 along the outer edges. In addition, the inner fabric 801, the outer fabric 802, the inner reinforcing fabric 803 and the outer reinforcing fabric 804 are sewn to each other along the sewing lines SL6 along their respective edges.

[0074] In the seat cushion 3 described above, each side wall portion 80 has reinforcing plates 81 and 82 connected to each other via a connecting member 83. The connecting member 83 can be bent at least along the boundary between the reinforcing plates 81 and 82. Fig. 9 As shown in FIG. 1 , the reinforcing plate 81 can be bent relative to the reinforcing plate 82 in a direction in which the outer surface 81b and the outer surface 82b approach each other (i.e., the side wall portion 80 is bent so as to protrude inward in the left-right direction (Y-axis direction)). On the other hand, since the connecting member 83 is fixed to the outer surfaces 81b and 82b, the edge portion 81d of the end surface 81c connected to the outer surface 81b is maintained (see FIG. 1 ). Fig. 9 ) and an edge portion 82d (see Fig. 9 ). That is, the reinforcing plate 81 is prevented from bending in a direction in which the inner surface 81a and the inner surface 82a approach each other relative to the reinforcing plate 82 (that is, the side wall portion 80 is bent in a manner protruding outward in the left-right direction (Y-axis direction)). Therefore, when the baby carriage 1 is folded, the side wall portion 80 is prevented from folding in a manner that expands outward in the left-right direction (Y-axis direction). Furthermore, the connecting member 83 connects the reinforcing plate 81 and the reinforcing plate 82 in a manner that does not apply force to the reinforcing plate 81 and the reinforcing plate 82 so that the reinforcing plate 81 bends in a direction in which the angle between the outer surface 81b and the outer surface 82b decreases relative to the reinforcing plate 82. That is, in the unfolded state, the connecting member 83 is configured not to encourage the side wall portion 80 to bend in a manner that protrudes inward in the left-right direction (Y-axis direction). Thus, in the unfolded state, the reinforcing plates 81 and 82 are properly maintained in a parallel state (i.e., the end faces 81c and 82c are in contact and the outer surfaces 81b and 82b are coplanar), and the infant's riding space is prevented from being compressed by the side wall portion 80. In addition, it is possible to avoid the problem that the space between the outer side of the side wall portion 80 in the left-right direction (Y-axis direction) and the stroller body 2 becomes larger, and a part of the infant's body, toys, etc. are easily caught in the space.

[0075] The connecting member 83 has a belt member 831, which is arranged so as to span the outer surface 81b and the outer surface 82b and is attached to the outer surfaces 81b and 82b. According to the above structure, by connecting the reinforcing plate 81 and the reinforcing plate 82 with the belt member 831, it is possible to more reliably maintain the outer surfaces 81b and 82b in a coplanar state in the unfolded state. As a result, it is possible to prevent the end surface 82c from being offset relative to the end surface 81c in the unfolded state, and the reinforcing plate 81 and the reinforcing plate 82 from overlapping each other (as a result, the reinforcing plate 81 is prevented from being properly bent relative to the reinforcing plate 82 during the folding operation).

[0076] The connecting member 83 includes a cloth member 832, which is arranged so as to span the outer surface 81b and the outer surface 82b and is sewn to the reinforcing plate 81 and the reinforcing plate 82, respectively. For example, when the belt member 831 is used as the connecting member 83, there is a concern that the belt member 831 may be peeled off from the outer surface 81b or the outer surface 82b due to the decrease in the adhesive force of the belt member 831 over time. On the other hand, according to the above-mentioned structure using the cloth member 832 as the connecting member 83, by sewing the cloth member 832 abutting against the outer surfaces 81b and 82b to the reinforcing plates 81 and 82, it is possible to prevent the connecting member 83 from falling off from the reinforcing plates 81 and 82, and the reinforcing plates 81 and 82 can be connected more stably.

[0077] The connecting member 83 includes both the above-mentioned belt member 831 and the cloth member 832. According to the above-mentioned structure, it is possible to obtain the effects of both the above-mentioned belt member 831 and the cloth member 832. That is, by using the cloth member 832, the reinforcing plate 81 and the reinforcing plate 82 can be connected more stably, and by using the belt member 831, it is possible to prevent the end face 82c from being displaced relative to the end face 81c.

[0078] The belt member 831 and the cloth member 832 have a mutually overlapping portion, and in the above portion, the belt member 831 is arranged between the cloth member 832 and the reinforcing plates 81, 82. According to the above structure, in the portion where the belt member 831 and the cloth member 832 overlap each other, the belt member 831 can be appropriately protected by the cloth member 832. That is, the surface of the belt member 831 in the above portion is prevented from being exposed to the outside. As a result, it is possible to suppress damage to the belt member 831 caused by external impacts, etc. generated when the baby carriage 1 is used, and it is possible to suppress the belt member 831 from peeling off from the outer surface 81b or the outer surface 82b.

[0079] In the above-mentioned part, the belt member 831 and the cloth member 832 are sewn to the reinforcing plate 81 and the reinforcing plate 82, respectively. According to the above-mentioned structure, the belt member 831 and the cloth member 832 are firmly fixed (sewn) to the reinforcing plates 81 and 82, so that the belt member 831 can be more effectively prevented from peeling off from the outer surface 81b or the outer surface 82b.

[0080] The length of the cloth member 832 along the boundary (fold line L2) between the reinforcing plates 81 and 82 (i.e., the length in the direction D1) is longer than the length of the belt member 831 along the direction D1. When the belt member 831 having an adhesive material is sewn together with the cloth member 832 and the reinforcing plates 81 and 82, there is a concern that the adhesive material adheres to the sewing machine needle used in the sewing and causes abnormal operation of the sewing machine. As described above, by making the cloth member 832 longer than the belt member 831, the ratio of the area where the belt member 831 and the cloth member 832 are sewn together to the entire area where the cloth member 832 is sewn to the reinforcing plates 81 and 82 can be reduced. As a result, the occurrence of a malfunction caused by the adhesive material of the belt member 831 as described above can be suppressed.

[0081] The side wall portion 80 includes an inner fabric 801, an outer fabric 802, an inner reinforcement fabric 803, and an outer reinforcement fabric 804. The reinforcement plates 81, 82 and the connection member 83 are stored between the inner reinforcement fabric 803 and the outer reinforcement fabric 804. The reinforcement plates 81, 82 are fixed to at least one of the inner reinforcement fabric 803 and the outer reinforcement fabric 804 (in this embodiment, the outer reinforcement fabric 804). In the above structure, when the reinforcement plates 81, 82 are sandwiched by the inner reinforcement fabric 803 and the outer reinforcement fabric 804, the outer sides thereof are further covered by the inner fabric 801 and the outer fabric 802. By protecting the reinforcing plates 81 and 82 with the double-layer fabric in this way, when an impact from the outside is applied to the side wall portion 80, even if the fabric exposed to the outside (the inner fabric 801 and the outer fabric 802) of the side wall portion 80 is damaged, the reinforcing fabric (the inner reinforcing fabric 803 and the outer reinforcing fabric 804) can prevent the reinforcing plates 81 and 82 from being exposed to the outside. As a result, it is possible to prevent the reinforcing plates 81 and 82 from being exposed to the outside, which may cause deterioration in appearance, or damage to the reinforcing plates 81 and 82 caused by contact between the reinforcing plates 81 and 82 exposed to the outside and the stroller body 2.

[0082] The stroller 1 described above includes the seat cushion 3 and the stroller body 2 that supports the seat cushion 3 and is deformable from the unfolded state to the folded state. According to the stroller 1, by including the seat cushion 3, it is possible to prevent the riding space of an infant in the unfolded state of the stroller 1 from being compressed, and it is possible to prevent the side wall portion 80 from being folded in a manner that expands outward in the left-right direction (Y-axis direction) when the stroller 1 is folded.

[0083] Although one embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment. The material and shape of each structure are not limited to the above materials and shapes, and various materials and shapes can be adopted.

[0084] For example, the structure of the stroller body 2 of the stroller 1 in the above-mentioned embodiment is only an example, and the stroller body 2 may have a frame structure different from that in the above-mentioned embodiment. In addition, the seat cushion 3 may have at least a seat surface portion 40, a backrest portion 50, and a pair of side wall portions 80, and other structures (such as the cover portion 70) may be omitted. In addition, in the above-mentioned embodiment, the connecting member 83 is composed of both the belt member 831 and the cloth member 832, but the connecting member 83 may be composed of only one of the belt member 831 and the cloth member 832, or the connecting member 83 may be composed of other members.

Claims

1. A baby stroller seat cushion, characterized in that: Installed on a baby stroller that can be folded from an unfolded state to a folded state, The baby stroller seat cushion comprises: Seat surface; a backrest portion connected to the seat portion; and a pair of side wall portions, which are arranged on both sides of the seat portion in the left-right direction in the expanded state, The side wall portion includes: a first reinforcing plate; a second reinforcing plate, which is arranged on the side opposite to the side where the seat surface portion is located relative to the first reinforcing plate; and a connecting member, which connects the first reinforcing plate and the second reinforcing plate. The first reinforcing plate has: a first inner surface which faces the side where the seat surface portion is located in the left-right direction; a first outer surface, which is opposite to the first inner surface; and a first end surface, which connects the first inner surface and the first outer surface and contacts the second reinforcing plate in the unfolded state, The second reinforcing plate has: a second inner surface which faces the side where the seat surface portion is located in the left-right direction; a second outer surface, which is opposite to the second inner surface; and a second end surface, which connects the second inner surface and the second outer surface and contacts the first end surface in the expanded state, The connecting component can be bent at least along the boundary between the first reinforcing plate and the second reinforcing plate. The connecting component is fixed to the first outer surface and the second outer surface in a manner that the first reinforcing plate is bent relative to the second reinforcing plate in a direction in which an angle between the first outer surface and the second outer surface is reduced without applying force to the first reinforcing plate and the second reinforcing plate.

2. The baby stroller seat according to claim 1, characterized in that: The connecting member includes a belt member that is arranged so as to straddle the first outer surface and the second outer surface and is attached to the first outer surface and the second outer surface.

3. The baby stroller seat cushion according to claim 1, characterized in that: The connecting member includes a fabric member that is disposed so as to straddle the first outer surface and the second outer surface and is sewn to the first reinforcing plate and the second reinforcing plate, respectively.

4. The baby stroller seat according to claim 1, characterized in that: The connecting component has: a belt member arranged to span the first outer surface and the second outer surface and attached to the first outer surface and the second outer surface; as well as A fabric member is disposed so as to straddle the first outer surface and the second outer surface and is sewn to the first reinforcing plate and the second reinforcing plate, respectively.

5. The baby stroller seat according to claim 4, characterized in that: The belt member and the cloth member have a portion that overlaps each other, In the portion, the belt member is arranged between the fabric member and the first reinforcing plate and the second reinforcing plate.

6. The baby stroller seat according to claim 5, characterized in that: In the portion, the belt member is sewn together with the fabric member to the first reinforcing plate and the second reinforcing plate, respectively.

7. The baby stroller seat according to claim 6, characterized in that: The length of the fabric member along the boundary between the first reinforcing plate and the second reinforcing plate is longer than the length of the belt member along the boundary.

8. The baby stroller seat according to any one of claims 1 to 7, characterized in that: The side wall portion includes an inner fabric, an outer fabric arranged at an outer side than the inner fabric, an inner reinforcement fabric arranged at an outer side than the inner fabric and an inner side than the outer fabric, and an outer reinforcement fabric arranged at an inner side than the outer fabric and an outer side than the inner reinforcement fabric. The first reinforcing plate, the second reinforcing plate and the connecting member are accommodated between the inner reinforcing fabric and the outer reinforcing fabric. The first reinforcing plate and the second reinforcing plate are fixed to at least one of the inner reinforcing fabric and the outer reinforcing fabric.

9. A baby stroller seat cushion, characterized in that: have: The baby stroller seat cushion according to claim 1; and The stroller main body supports the stroller seat and is deformable from the unfolded state to the folded state.

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