Restraining device for child-rearing appliance with seat

Abstract

The present invention relates to a restraint device for a child-rearing appliance with a seat, and more particularly, to a restraint device for a child-rearing appliance with a seat, which enables a child to easily sit on and leave from the seat. A restraint device for a child-rearing appliance with a seat is provided with: a seat body (21) having a seat surface section and a backrest section; and a restraint strap posture holding mechanism (4) that is supported so as to be rotatable with respect to the seat body (21), has a dead point at a position midway in the rotation range, and exerts a spring force when positioned on one side of the dead point to become a restraint position (part (A) in fig. 5) at which the child's body is restrained, the restraint strap posture holding mechanism (4) being supported so as to be rotatable with respect to the seat body (21). And when located on the other side of the dead point, the spring exerts an elastic force and becomes a non-restraint position (part (C) in Figure 5) which does not restrain the body of the child.

Description

Technical Field

[0001] The present invention relates to a restraint device for a child-care appliance with a seat, and more particularly to a restraint device for a child-care appliance with a seat for restraining the body of a child seated on a seat body. Background Art

[0002] For example, child-care appliances with seats such as baby strollers and vehicle-mounted child seats are provided with shoulder straps, waist belts, and crotch straps to restrain the body of a child seated on the seat body. When the child is seated on the seat body, these straps are connected by a buckle, so that the body of the child can be fixed to the seat body.

[0003] In U.S. Patent No. 7,445,286 (Patent Document 1), a configuration is disclosed in which the shoulder strap is elastically pushed in the open direction, and when the engagement of the buckle is released, the shoulder strap springs upward. In Japanese Patent Laid-Open No. 7-2007 (Patent Document 2), a cushioning material is added to the back of the crotch strap and the buckle, so that the crotch strap is kept in a state of standing up from the seat surface, and the position and posture of the buckle are maintained by the cushioning material.

[0004] [Prior Art Documents]

[0005] [Patent Documents]

[0006] Patent Document 1: Specification of U.S. Patent No. 7,445,286

[0007] Patent Document 2: Japanese Patent Laid-Open No. 7-2007. Summary of the Invention

[0008] [Problems to be Solved by the Invention]

[0009] When a child is to be seated on the seat body of a child-care appliance with a seat, it is necessary to first pull the shoulder strap located below the child outward and then buckle and connect it after the child is seated on the shoulder strap, or to first retract the shoulder strap to the side of the seat and then seat the child and then buckle and connect it, so it takes time and labor.

[0010] In the technology disclosed in the above Patent Document 1, when a child is seated on a vehicle-mounted child seat, the shoulder strap is maintained in a state of springing upward, so the shoulder strap does not cause an obstruction. However, since the shoulder strap is always elastically pushed in the open direction, the restraining force when the shoulder strap is engaged with the buckle is weakened. In addition, in the technology disclosed in the above Patent Document 2, it is difficult for a child to sit on and get off the seat only because the crotch strap stands up.

[0011] The present invention was developed to solve the above problems, and its object is to provide a restraint device for a child-care appliance with a seat that allows a child to easily sit on and get off the seat.

[0012] [Means for Solving the Problem]

[0013] For this purpose, the restraint device of a child-care appliance with a seat according to an aspect of the present invention includes: a seat body having a seat surface portion and a backrest portion; and a restraint belt posture maintaining mechanism that is provided along the restraint belt and is supported so as to be rotatable relative to the seat body, and has a dead point at an intermediate position within the rotation range. The restraint belt posture maintaining mechanism exerts an elastic thrust force when located on one side of the dead point to become a restraint position for restraining the body of a child, and exerts an elastic thrust force when located on the other side of the dead point to become a non-restraint position for not restraining the body of the child.

[0014] The restraint belt posture maintaining mechanism preferably includes a restraint belt for restraining the body of a child seated on the seat body.

[0015] The restraint belt is preferably a hip belt for restraining the hips of a child seated on the seat body.

[0016] The restraint belt posture maintaining mechanism preferably includes: a belt support member that extends along the restraint belt and is supported so as to be rotatable relative to the seat body; and an elastic thrust mechanism that has a dead point at an intermediate position within the rotation range. The elastic thrust mechanism becomes a restraint position when located on one side of the dead point, and becomes a non-restraint position when located on the other side of the dead point.

[0017] The restraint belt posture maintaining mechanism preferably further includes a fixed seat fixed to the seat body, and the belt support member is supported so as to be rotatable relative to the fixed seat.

[0018] The belt support member preferably has: a plate for supporting the restraint belt; and a bushing for surrounding the plate and the restraint belt together.

[0019] The elastic thrust mechanism is preferably an elastic member having one end connected to the plate and the other end connected to the fixed seat.

[0020] The dead point is preferably a position where the elastic member and the plate are arranged in a straight line; the restraint belt posture maintaining mechanism becomes a restraint position when the elastic member and the plate are out of the straight-line relationship and located on one side, and becomes a non-restraint position when the elastic member and the plate are out of the straight-line relationship and located on the other side.

[0021] The dead point is preferably a situation where the restraint belt posture maintaining mechanism is in a straight shape; the state in which the restraint belt posture maintaining mechanism bends toward one side is the restraint position, and the state in which the restraint belt posture maintaining mechanism bends toward the other side is the non-restraint position.

[0022] [Advantages of the Invention]

[0023] According to the present invention, it is possible to easily seat a child on the seat and get the child off the seat. Description of the Drawings

[0024] Figure 1 is a perspective view of a stroller showing a restraint device for a child-care appliance with a seat according to Embodiment 1 of the present invention.

[0025] Figure 2 is a side view of a stroller showing a restraint device for a child-care appliance with a seat according to the same Embodiment 1.

[0026] Figure 3 is a schematic view showing a change in the position of the restraint device according to the same Embodiment 1, Figure 3 part (A) of which shows a state in a restraint position, Figure 3 part (B) of which shows a state in a non-restraint position.

[0027] Figure 4 is a view showing the restraint device according to the same Embodiment 1, Figure 4 part (A) of which is a longitudinal sectional view, Figure 4 part (B) of which is a cross-sectional view taken along line IVb-IVb of part (A) of Figure 4 which.

[0028] Figure 5 is a side view showing a change in the position of the restraint device according to the same Embodiment 1, Figure 5 part (A) of which shows a state in a restraint position, Figure 5 part (B) of which shows a state at a dead point, Figure 5 part (C) of which shows a state in a non-restraint state.

[0029] Figure 6 is a perspective view showing a disassembled restraint device for a child-care appliance with a seat according to Embodiment 2 of the present invention.

[0030] Figure 7 is a view showing a state where the restraint device according to the same Embodiment 2 is in a restraint position, Figure 7 part (A) of which is a perspective view, Figure 7 part (B) of which is a side view.

[0031] Figure 8 is a view showing a state where the restraint device according to the same Embodiment 2 is in a non-restraint position, Figure 8 part (A) of which is a perspective view, Figure 8 part (B) of which is a side view.

[0032] Explanation of reference numerals

[0033] 1 Stroller (child-care appliance with a seat)

[0034] 4, 4A Restraint belt posture holding mechanism

[0035] 10 Vehicle body frame

[0036] 11 Front foot

[0037] 12 Front wheel

[0038] 13 Rear foot

[0039] 14 Rear wheel

[0040] 15 Front guard bar

[0041] 16 Armrest

[0042] 17 Seat support member

[0043] 18 Backrest support member

[0044] 19 Push rod

[0045] 20 Seat body

[0046] 21 Seat surface part

[0047] 22 Backrest part

[0048] 23 Basket body

[0049] 27 Armrest support member

[0050] 28 Reversing frame

[0051] 29 Hood

[0052] 30 Shoulder strap

[0053] 31 Waist belt

[0054] 32 Hip belt

[0055] 33 Buckle

[0056] 40, 40A Fixed seat

[0057] 40a First concave part

[0058] 40b Second concave part

[0059] 41 First hole part

[0060] 41A Flat part

[0061] 42 Second hole part

[0062] 42A Protruding part

[0063] 43, 53A Belt support member

[0064] 43A Step part

[0065] 44 Plate

[0066] 44a Opening

[0067] 44b Hooking portion

[0068] 44A Hole portion

[0069] 45 Bushing

[0070] 45A Hole portion

[0071] 46 First shaft portion

[0072] 46A, 47A Screws

[0073] 47 Elastic pushing mechanism

[0074] 49 Second shaft portion

[0075] 50A Posture holding member

[0076] 51A, 52A Through holes

[0077] 54A Fixed seat support portion

[0078] A Arrow Detailed implementation mode

[0079] The implementation mode of the present invention will be described in detail with reference to the accompanying drawings. Here, the same or equivalent parts in the drawings are denoted by the same reference numerals and their description is omitted.

[0080] First, an example of a baby carriage with a seat having a restraint device for restraining a child's body will be described. The baby carriage with a seat using a restraint device may be any baby carriage having a seat for a child to sit on, and examples include a stroller, a car seat for a child, a cradle, etc. In this embodiment, an example applicable to the stroller 1 will be described.

[0081] <Summary of the stroller>

[0082] Refer to Figure 1 to describe the summary of the stroller 1 of this embodiment. Figure 1 is a perspective view of the stroller, Figure 2 is a side view thereof. In the following description, the front - rear direction corresponds to the front - rear direction of the stroller, and the left - right direction corresponds to the left - right direction when viewed from the front of the stroller. However, for ease of understanding, the direction shown by the arrow A in Figure 2 is set as the front, and the direction opposite to the arrow A is set as the rear. In addition, Figure 1 shows the state of pushing the stroller from the back, Figure 2 shows the state of pushing the stroller from the opposite side.

[0083] Regarding the basic structure of the stroller 1, it may be the same as that of a general stroller. The stroller 1 includes a vehicle body frame 10 and a seat body 20. The vehicle body frame 10 includes a pair of front legs 11, a pair of rear legs 13, a front guard bar 15, armrests 16, a seat support member 17, a backrest support member 18, and a push rod 19. The vehicle body frame 10 except for the front guard bar 15, the seat support member 17, the backrest support member 18, and the push rod 19 is provided in pairs at intervals in the width direction (vehicle width direction).

[0084] At the lower ends of the pair of front legs 11 extending in the vertical direction, front wheels 12 are respectively provided. At the lower ends of the rear legs 13 extending in the vertical direction behind each front leg 11, rear wheels 14 are respectively provided. At the lower ends of the pair of front legs 11 and the pair of rear legs 13, a basket body 23 is provided inside which storage items such as carry-on items can be stored. The basket body 23 is in the shape of a box with an open top, and its corner portions (corner parts) are respectively fixed to the middle positions in the vertical direction of the pair of front legs 11 and the pair of rear legs 13.

[0085] The front guard bar 15 extends in the width direction at a position in front of the seat body 20 and is connected to the front of the pair of armrests 16 arranged on the left and right sides of the seat body 20. The front guard bar 15 may also be detachably provided on the armrests 16. The front end of the armrest 16 is connected to the upper end of the front leg 11, and the rear end of the armrest 16 is connected to the upper end of the armrest support member 27. The lower end of the armrest support member 27 abuts against the rear leg 13, and the armrest support member 27 and the rear leg 13 are locked.

[0086] The push rod 19 is generally in a U shape, and its lower end is rotatably installed on a swivel frame 28 connected to the pair of rear legs 13. The push rod 19 is arranged to be swingable in the front-rear direction and can be switched between a rear-facing pushing position ( Figure 1 ) and a front-facing pushing position ( Figure 2 ).

[0087] As Figure 2 shown, a hammock is installed on the seat support member 17 and the backrest support member 18, and a buffer material is installed on the hammock. Accordingly, a seat body 20 serving as a space for accommodating a child is formed on the seat support member 17 and the backrest support member 18. In other words, the seat support member 17 and the backrest support member 18 support the seat body 20 from below. As Figure 1 shown, the seat body 20 includes, for example: a seat surface portion 21 that supports the child's buttocks; and a backrest portion 22 that supports the child's back.

[0088] As Figure 1As shown, on the seat body 20 are provided: a pair of shoulder straps 30 that restrain the shoulders of a child; a pair of waist belts 31 that extend across the seat body 20 in the left-right direction to restrain the waist of the child; and a crotch strap 32 that extends between the two thighs of a child seated on the seat body 20. The other ends of these restraining straps 30, 31, 32 are detachably connected to each other near the abdomen of the child through a buckle 33 provided at the front end of the crotch strap 32. In the present embodiment, a restraining strap posture maintaining mechanism 4( Figure 1 ) is provided, and this restraining strap posture maintaining mechanism 4 supports the posture of the crotch strap 32 along the crotch strap 32. The restraining strap posture maintaining mechanism 4 will be described later.

[0089] In addition, above the seat body 20, a canopy 29 that covers the upper space of the seat body 20 is provided. The canopy 29 is configured to be openable and closable.

[0090] The stroller 1 of the present embodiment can be a foldable stroller in an unfolded state (rear-facing stroller position) and a folded state (not shown). When the stroller 1 is to be changed from the unfolded state to the folded state, the locking of the armrest support member 27 and the pair of rear legs 13 is released, and the reversing frame 28 is turned upside down, so that the lower end portion of the push bar 19 that abuts against the upper part of the pair of rear legs 13 abuts against the lower part of the rear legs 13. Although not shown, in the folded state of the stroller 1, the front-rear direction interval between the pair of front legs 11 and the pair of rear legs 13 is reduced, and the seat surface portion 21 and the backrest portion 22 form a V shape. When the stroller 1 is to be changed from the folded state to the unfolded state, the reverse order can be followed.

[0091] <Embodiment 1>

[0092] Next, with reference to Figures 3 to 5 the restraining strap posture maintaining mechanism 4 that supports the posture of the crotch strap 32 will be described. Figure 3 is a schematic view showing the position change of the restraining strap posture maintaining mechanism, Figure 3 part (A) of which shows the state in the restraining position, Figure 3 and part (B) of which shows the state in the non-restraining position. Figure 4 Part (A) of is a longitudinal sectional view of the restraining strap posture maintaining mechanism, Figure 4 and part (B) of is a cross-sectional view when viewed from line IVb-IVb of part (A) of Figure 4 . Figure 5 is a side view showing the position change of the restraining strap posture maintaining mechanism, Figure 5 part (A) of which shows the state in the restraining position, Figure 5 part (B) of which shows the state at the dead point, Figure 5 and part (C) of which shows the state in the non-restraining position.

[0093] The restraint belt posture maintaining mechanism 4 of the present embodiment is as follows Figure 3 shown in the (A) part of Figure 3 brings the hip belt 32 to the restraint position, and as shown in the (B) part of

[0094] Figure 3 , brings the hip belt 32 to the non-restraint position. Although the restraint position is the position for restraining the child's body, the hip belt 32 only needs to be inclined toward the child's body side (rear) and does not need to contact the child's body. The non-restraint position is the position where the child's body is not restrained, and it is an open position where the hip belt 32 is inclined toward the opposite side (front) of the child's body to form an open space on the seat body 20.

[0095] Refer to Figure 4 the (A) part of Figure 4 and the (B) part of Figure 4 to describe the configuration of the restraint belt posture maintaining mechanism 4. Generally speaking, the restraint belt posture maintaining mechanism 4 includes: a fixed seat 40 fixed to the seat surface portion 21; a belt support member 43 for supporting the hip belt 32; and an elastic pushing mechanism 47 for elastically pushing the belt support member 43. As shown in the (B) part of

[0096] Figure 4 , the restraint belt posture maintaining mechanism 4 is located on the rear side of the hip belt 32. Figure 4 Figure 4 , the first hole portion 41 is located above and in front of (in the direction of arrow A) the second hole portion 42.

[0097] As Figure 4 shown in the (A) part of

[0098] The belt support member 43 extends along the hip belt 32 and is supported so as to be rotatable relative to the fixed seat 40. The belt support member 43 has: a plate 44; and a bushing 45 (shown in dashed lines) that encloses the plate 44 and the hip belt 32 together. Here, the so-called "the plate 44 is arranged along the hip belt 32" also includes the case where a part of the plate 44 and the hip belt 32 are kept at a close distance without being separated, and it is not necessary for the entire plate 44 to be arranged along the hip belt 32.

[0099] As Figure 4 shown in part (B) of [], an opening 44a is provided in the plate 44. When viewed from above, the opening 44a opens upward from the lower end. At the upper end of the opening 44a, a hanging portion 44b is provided that is horizontally spanned with respect to the opening 44a. The elastic pushing mechanism 47 is arranged along the vertical direction in which the opening 44a extends, and the hanging portion 44b supports the upper end portion of the elastic pushing mechanism 47.

[0100] On both ends sides located at the lower end of the opening 44a, a pair of first shaft portions 46 protruding in the left and right directions are provided. The pair of first shaft portions 46 respectively penetrate through a pair of first hole portions 41 of the fixed seat 40. The first shaft portions 46 function as the rotation shafts of the belt support member 43. Accordingly, the belt support member 43 is arranged to be rotatable in the front-rear direction about the first shaft portions 46. The belt support member 43 of the present embodiment is rotatable 90° relative to the fixed seat 40, but the rotation angle is not limited. For example, it can be 180°, or a stopper can be provided to adjust the rotation angle.

[0101] The bushing 45 only needs to be at least in a shape that encloses the buckle 33. The bushing 45 is, for example, a cloth product having cushioning properties and can also be used as a hip belt cover. The bushing 45 can be easily removed and can be washed when it gets dirty or the like. By covering the plate 44 and the hip belt 32 with the bushing 45 together, the movement of the plate 44 can be transmitted to the hip belt 32. Here, when the bushing 45 is used as a hip belt cover, it is preferably arranged along the vertical length of the hip belt 32, but it can also cover a part of the vertical direction.

[0102] One end of the elastic pushing mechanism 47 is connected to the plate 44 and the other end is connected to the fixed seat 40. The elastic pushing mechanism 47 is, for example, an elastic member such as a rubber band, a tension spring, or a compression spring, and can also include a member having elasticity by material or shape. Specifically, the upper end of the elastic pushing mechanism 47 is hooked on the hanging portion 44b of the plate 44, and the lower end of the elastic pushing mechanism 47 is hooked on the second shaft portion 49. The second shaft portion 49 is fixed to the second hole portion 42 of the fixed seat 40. The second shaft portion 49 functions as the rotation shaft of the elastic pushing mechanism 47. Accordingly, the elastic pushing mechanism 47 is arranged to be rotatable in the front-rear direction about the second shaft portion 49. In this way, the rotation shafts of the belt support member 43 and the elastic pushing mechanism 47 are arranged at different positions, so that a dead point is formed when the belt support member 43 rotates about the second shaft portion 49.

[0103] Next, with reference to Figure 5 part (A) to Figure 5 part (C) of this, the operation of the restraint posture holding mechanism 4 will be described.

[0104] As Figure 5 shown in part (A) of this, when the restraint posture holding mechanism 4 is in the restraint position, the elastic pushing mechanism 47 and the plate 44 are out of the linear relationship shown by the alternate long and short dash line and are located on the rear side. Here, Figure 5 although part (A) of this shows the state where the belt support member 43 stands vertically with respect to the seat surface portion 21, the belt support member 43 can also be tilted backward, or can be tilted to a position along the crotch of the child.

[0105] Figure 5 Part (B) of this shows the state where the restraint posture holding mechanism 4 is at the dead point. The dead point is the position where the elastic pushing mechanism 47 and the plate 44 are arranged in a linear shape, specifically, the position shown by the alternate long and short dash line. The plate 44 is not held at this dead point position, and this dead point is always just a passing point of the plate 44.

[0106] As Figure 5 shown in part (C) of this, when the restraint posture holding mechanism 4 is in the non-restraint position, the elastic pushing mechanism 47 and the plate 44 are out of the linear relationship shown by the alternate long and short dash line and are located on the front side. Here, Figure 5 although part (C) of this shows the state where the belt support member 43 has a substantially horizontal positional relationship with respect to the seat surface portion 21, the belt support member 43 can also be tilted (inclined) forward.

[0107] With reference to the same drawing, the operation method of the restraint posture holding mechanism 4 will be described.

[0108] When the child is to be seated on the seat body 20, the operator moves the buckle 33 or the crotch belt 32 (or a bushing 45 not shown) forward in a state where the engagement of the buckle 33 is released. At this time, the belt support member 43 of the restraint posture holding mechanism 4 is moved forward beyond Figure 5 the dead point shown by the alternate long and short dash line in part (B) of this. Accordingly, the belt support member 43 moves from Figure 5 the position (restraint position) where the elastic pushing mechanism 47 is located on the rear side with respect to the belt support member 43 shown in part (A) of this, via Figure 5 the dead point shown in part (B) of this, and is displaced to Figure 5 the position (non-restraint position) where the elastic pushing mechanism 47 is located on the front side with respect to the belt support member 43 shown in part (C) of this.

[0109] Next, the child is seated on the seat body 20, and the belt support member 43 is tilted backward from the front. At this time, the belt support member 43 of the restraint belt posture holding mechanism 4 is moved backward beyond Figure 5 the dead point indicated by the dashed line at a point in the (B) portion of Figure 5 Accordingly, the belt support member 43 moves from the position where the elastic pushing mechanism 47 shown in the (C) portion of Figure 5 is located on the front side with respect to the belt support member 43 (non-restrained position), passes through Figure 5 the dead point shown in the (B) portion of

[0110] and is displaced to the position where the elastic pushing mechanism 47 shown in the (A) portion of Figure 5 is located on the rear side with respect to the belt support member 43 (restrained position). Finally, the buckle 33 is engaged. Figure 5 Figure 5 When the child is to get off the seat body 20, the operator first releases the engagement of the buckle 33. Then, the buckle 33 or the hip belt 32 is moved forward. At this time, the belt support member 43 of the restraint belt posture holding mechanism 4 is moved forward beyond Figure 5 the dead point indicated by the dashed line at a point in the (B) portion of

[0111] Accordingly, the belt support member 43 moves from the position where the elastic pushing mechanism 47 shown in the (A) portion of is located on the rear side with respect to the belt support member 43 (restrained position), passes through

[0112] the dead point shown in the (B) portion of

[0113] and is displaced to the position where the elastic pushing mechanism 47 shown in the (C) portion of

[0114] is located on the front side with respect to the belt support member 43 (non-restrained position). Figures 6 to 8To describe the restraint belt posture holding mechanism 4A of Embodiment 2. Figure 6 It is a perspective view showing the restraint device of the child-rearing appliance with a seat of Embodiment 2 disassembled. Figure 7 It is a view showing the state where the restraint device is in the restraint position. Figure 8 It is a view showing the state where it is in the non-restraint position. Hereinafter, only the differences from the restraint belt posture holding mechanism 4 shown in Embodiment 1 will be described in detail. The elastic pushing mechanism 47 of the restraint belt posture holding mechanism 4 of Embodiment 1 is an elastic member. In contrast, the difference in Embodiment 2 is that the elastic pushing mechanism is formed by its material and shape.

[0115] Refer to Figure 6 Generally speaking, the restraint belt posture holding mechanism 4A includes: a fixed base 40A; and a posture holding member 50A, which is supported by the fixed base 40A.

[0116] The fixed base 40A includes: a flat portion 41A located on one side; and a protruding portion 42A protruding from the other end of the flat portion 41A. The flat portion 41A is the part to be fixed to the seat surface portion 21. The protruding portion 42A, together with a stepped portion 43A that protrudes upward more and more toward the rear end, fixes the posture holding member 50A.

[0117] The posture holding member 50A is formed of an elastically deformable member having flexibility, for example. The posture holding member 50A includes: a belt support member 53A extending in the vertical direction; and a pair of fixed base support portions 54A provided at the lower end of the belt support member 53A for fixing to the fixed base 40A.

[0118] The belt support member 53A is an elastically deformable member with flexibility, and has an elastic pushing mechanism that can be displaced to form a bent shape protruding forward or backward. The central portion of the belt support member 53A is cut with a notch from below upward. The fixed base support portion 54A is a portion that is inclined with the width increasing from above downward. The fixed base support portion 54A is provided with two through holes 51A, 52A in the vertical direction. Screws 46A, 47A are respectively inserted through the two through holes 51A, 52A and fixed to the two hole portions 44A, 45A of the fixed base 40A. At this time, the pair of fixed base support portions 54A are fixed overlapping each other in the front-rear direction. Therefore, as shown in the (A) part of Figure 7 and the (B) part of Figure 7 the posture holding member 50A forms a bent shape protruding forward.

[0119] Next, refer to Figure 7 and Figure 8 to describe the operation of the restraint belt posture holding mechanism 4A.

[0120] As shown in the (A) part of Figure 7 and the (A) part of Figure 7As shown in part (B), when the restraint belt posture holding mechanism 4A is in the restraint position, the posture holding member 50A is bent in a state where the central portion in the vertical direction protrudes forward. On the other hand, as shown in part (A) of Figure 8 and part (B) of Figure 8 , when the restraint belt posture holding mechanism 4A is in the non-restraint position, the posture holding member 50A is bent in a state where the central portion in the vertical direction protrudes upward. Here, the "state of being in the non-restraint position" may be at least a state where the posture holding member 50A is bent in a state where the central portion in the vertical direction protrudes backward.

[0121] When the child is to get off the seat body 20, the operator first releases the engagement of the buckle 33. Then, the buckle 33 or the hip belt 32 located above the hip belt 32 is moved forward beyond the dead point.

[0122] The operation method of the restraint belt posture holding mechanism 4A will be briefly described with reference to the same drawings.

[0123] When the child is to be seated on the seat body 20, the operator moves the buckle 33 or the hip belt 32 forward in a state where the engagement of the buckle 33 has been released. Accordingly, the posture holding member 50A rotates about the screw 46A as a fulcrum, and the posture holding member 50A is as shown in part (A) of Figure 8 and part (B) of Figure 8 , and becomes a bent state where the central portion in the vertical direction protrudes upward. Then, the child is seated on the seat body 20, and the buckle 33 or the hip belt 32 is tilted backward from the front. Accordingly, the posture holding member 50A rotates about the screw 46A as a fulcrum, and the posture holding member 50A is as shown in part (A) of Figure 7 and part (B) of Figure 7 , and becomes a bent state where the central portion in the vertical direction protrudes forward.

[0124] When the child is to get off the seat body 20, the operator first releases the engagement of the buckle 33. Then, the buckle 33 or the hip belt 32 is moved forward. Accordingly, the posture holding member 50A rotates about the screw 46A as a fulcrum, and the posture holding member 50A is as shown in part (A) of Figure 8 and part (B) of Figure 8 , and becomes a bent state where the central portion in the vertical direction protrudes upward.

[0125] <Modification Example>

[0126] In addition, in Embodiments 1 and 2, the restraint belt posture maintaining mechanisms 4 and 4A are used to maintain the posture of the crotch belt 32, but they can also be used for belts such as the shoulder belt 30 for restraining a child's shoulders and the waist belt 31 for restraining a child's waist, which are used to restrain a child's body.

[0127] In Embodiments 1 and 2, the form in which the restraint belt posture maintaining mechanisms 4 and 4A and the crotch belt 32 are provided individually has been described, but the restraint belt posture maintaining mechanisms 4 and 4A and the crotch belt 32 can also be provided integrally, and only the restraint belt posture maintaining mechanism can be used to restrain a child's body.

[0128] In Embodiments 1 and 2, the fixing seats 40 and 40A are fixed to the seat surface portion 21, but it is not necessarily required to provide the fixing seats 40 and 40A. The belt support member 43 of Embodiment 1 and the posture maintaining mechanism 4A of Embodiment 2 can also be directly fixed to the seat surface portion 21, or the fixing seats 40 and 40A can be formed by a part of the seat body 20.

[0129] As a structure having a dead point, the elastic pushing mechanism 47 is used in Embodiment 1, and the shape and material are adopted in Embodiment 2, but it is not limited to these embodiments, and it can also be a configuration having a dead point through other constitutions.

[0130] In addition, the form in which the restraint belt posture maintaining mechanism 4A is located on the rear side of the crotch belt 32 has been described, but it is sufficient if it is arranged at a position where the posture of the crotch belt 32 can be supported. For example, it can be located on the front side of the crotch belt 32, or a part of the restraint belt posture maintaining mechanism 4A can be located in front of the crotch belt and the remaining part can be located at the rear.

[0131] The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the illustrated embodiments. Various modifications or changes can be made to the illustrated embodiments within the same scope or an equivalent scope of the present invention.

Claims

1. A restraint device for a childcare apparatus with a seat, the restraint device comprising: A seat body having a seat portion and a backrest portion; and The restraint belt posture retaining mechanism is supported to be rotatable relative to the aforementioned seat body and has a dead point at the midpoint of the rotation range. The restraint belt posture retaining mechanism exerts a resilient thrust when located on one side of the aforementioned dead point to become a restraining position for restraining the child's body, and exerts a resilient thrust when located on the other side of the aforementioned dead point to become a non-restraining position that does not restrain the child's body.

2. The restraint device for a childcare apparatus with a seat according to claim 1, wherein: The restraint belt posture retaining mechanism includes a restraint belt for restraining the body of a child seated on the seat body.

3. The restraint device for a childcare apparatus with a seat according to claim 2, wherein: The restraint belt is a crotch belt for restraining the crotch of a child sitting on the seat body.

4. The restraint device for a childcare apparatus with a seat according to claim 1 or 2, wherein: The aforementioned restraint belt posture holding mechanism comprises: a belt support member extending along the restraint belt and supported to be rotatable relative to the seat body; and The push-and-pop mechanism has the aforementioned dead point at a midway position in the rotation range. The push-and-pop mechanism becomes the aforementioned restrained position when located on one side of the aforementioned dead point, and becomes the aforementioned unrestrained position when located on the other side of the aforementioned dead point.

5. The restraint device for a childcare apparatus with a seat according to claim 4, wherein: The aforementioned restraint belt posture holding mechanism further comprises a fixing seat fixed to the aforementioned seat body; The belt supporting member is supported so as to be rotatable relative to the fixing seat.

6. The restraint device for a childcare apparatus with a seat according to claim 5, wherein: The belt supporting member includes: a plate that supports the restraining belt; and a bushing that surrounds the plate and the restraining belt together.

7. The restraint device for a childcare apparatus with a seat according to claim 6, wherein: The aforementioned elastic push mechanism is an elastic component with one end connected to the aforementioned plate and the other end connected to the aforementioned fixing seat.

8. The restraint device for a childcare apparatus with a seat according to claim 7, wherein: The dead point is a position where the elastic member and the plate are in a linear relationship. The restraint belt posture retaining mechanism is in the restraining position when the elastic member and the plate are separated from the linear relationship and are located on one side, and is in the non-restraining position when the elastic member and the plate are separated from the linear relationship and are located on the other side.

9. The restraint device for a childcare apparatus with a seat according to claim 4, wherein: The aforementioned dead point is a situation where the aforementioned restraint belt posture holding mechanism is in a straight line; The state in which the restraint belt posture retaining mechanism is bent toward one side is the restraining position, and the state in which the restraint belt posture retaining mechanism is bent toward the other side is the non-restraining position.

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