TW201202075A - Seat construction of baby equipment - Google Patents

Abstract

This invention provides a seat construction of baby equipment which is useful for children from the ages of an infant through primary schooling. The seat construction of this invention realizes an optimum seat arrangement in the aspect of safety and comfort for infants in various forms of use in respect of their ages. The seat construction includes a seat base unit 14, a back support 13 capable of reclining backwards and being connected to the seat base unit 14 through a first connection shaft 15 and a second connection shaft 16. The first connection shaft 15 is fixed onto either the seat base unit 14 or the back support 13, and the other one is provided with a first guide groove 17 for receiving the first connection shaft 15. The second connection shaft 16 is fixed onto either the seat base unit 14 or the back support unit 13 and the other one is provided with a second guide groove 18 for receiving the second connection shaft 16.

Description

201202075 VI. Description of the Invention: [Technical Field of the Invention] The invention relates to a seat structure of a childcare appliance, and in particular, a seat structure of a childcare appliance. Talk about the fascination [Prior Art] A child-made child seat (chiId seat) for the infant to sleep or sit. Up to now, we have developed a series of seats, a child seat with a reclining mechanism, a child seat with a mechanism for switching between the child and the rearward use, and the like. For example, there is a Japanese special Kaiping 1〇_25〇426鱿. Japanese Patent Laid-Open Publication No. 2002-301965 (Patent Document: (Patent No. 2)) The child seat described in Patent Document 1 is provided with a seat and a reclining seat. The base is connected to the backrest portion of the seat; the X-set 'forklift storage has left and right armrests that stand up in the vertical direction, and supports the seat device; and the seat base portion' supports the above = support The rotation axis of the seat extending in the vertical direction can be rotated and rotated. The backrest portion and the left and right armrest portions are coupled to each other through the connecting shaft (pinb〇u) = the seat portion and the left and right armrest portions are transmitted through the seat portion. The convex portions and the guide grooves provided in the left and right armrest portions are connected to each other so as to be rotatable in the front-rear direction, and are slidably coupled to each other. When the backrest portion is rotated about the connecting shaft: the seat portion is relatively forward with respect to the armrest portion. Since it moves, it is a structure which can position the backrest part back to a bed state. Moreover, the said support apparatus turns on the seat base part by the seat rotation, and the rotation of the vehicle by the riding center ^ 323047

S 4 201202075 This allows the orientation of the seat device to be changed to the front, the rear, and the side of the J, so that it is possible to provide a child from a newborn and a child who is not sitting yet to a certain degree. During the schoolchildren's period _^ night use I child seat. Further, the child seat device described in Patent Document 2 has a truss: a rear tilting base that connects the base of the base and the seat body so as to be slidable only in the front-rear direction, and is coupled to the rear tilting base. Rotate about an axis perpendicular to the upper surface of the 椽砀= seat. Among them, the upper surface of the base frame is provided in a curved/pain-like manner in such a manner that the twist is made to face toward the front and become lower. A rail that is combined with the groove-shaped rail f is provided on the lower surface of the reclining base. When the rear tilting base is slid forward relative to the base frame, the seat body is integrally tilted back according to the shape of the grooved track. Further, the seat body is rotated on the rear tilting base, so that the seat body can be made. The orientation is changed to the front and the rear. According to this configuration, the seat body can be surely supported on the base frame, so that the expected movement of the seat body can be prevented when an impact occurs. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. 2002-301965 (Patent Document 2) (Problems to be Solved by the Invention) In the seat structure of the child seat, from the viewpoint of improving the safety corresponding to the front impact accident, the two forms of use, forward and backward, 5 323047 201202075 will be placed on the head of the infant sitting above The position farther from the front side of the car body, that is, the position closer to the backrest portion of the rear seat of the car, is very important for the protection of infants and young children. Therefore, it is necessary to form a configuration in which the backrest portion of the child seat is disposed closer to the rear side of the vehicle body in both the forward and backward use forms. In the child seat disclosed in Patent Document 1, the backrest portion and the support device supporting the backrest portion are coupled to each other via a connecting shaft fixed to the support device, and the backrest portion is rotated about the connecting shaft. The backrest adjustment of the backrest can be performed. Therefore, when the child seat is in the rearward use mode, the backrest portion is tilted toward the back side, that is, toward the front side of the vehicle body, so that the backrest portion has a rearward tilting angle that is suitable for the rearward use mode. The head will inevitably move to the front side of the car body. As described above, such a configuration is not preferable from the viewpoint of safety of infants and young children. Further, in the child seat disclosed in Patent Document 1, as described above, the connection shaft for connecting the backrest portion and the support device is fixed. Therefore, in the state in which the n-part women's clothing is supported, the distance between the connecting shaft as the rotation center of the reclining motion of the backrest portion and the distance between the rotation axis of the seat is thus "before or backward" In the use-use state, when the position of the backrest portion is determined by arranging the * portion closer to the rear side of the vehicle body, the other is the use mode (from the mounting position, the backrest portion is the seat rotation axis) In the center and in the state of rotation (10), the backrest portion is inevitably brought closer to the front side of the vehicle body. Therefore, it is not possible to have a child's seat with a backrest that is tilted back and centered on a fixed axis. It is not possible to use it forward and backward. 6 323047

S 201202075 'These two forms have the most backward angle of inclination for safety and comfort. • In the case of the child seat described in Patent Document 2, since the entire body of the reclining base is tilted in accordance with the shape of the grooved track provided on the base frame, even if it is used backwards, Tilt, the head of the infant sitting on it will also move to the front side of the car body. However, the child seat cannot be made into a bed state because of the two-seat system-body formation. The child seat described in Patent Document 2 is not likely to be used from the time of the newborn and young children who are not yet able to reach a certain level of children and schoolchildren. Further, the child seat described in Patent Document 2 does not allow the backrest portion to rotate relative to the seat portion. Therefore, it is impossible to make an optimum angular arrangement between the backrest portion and the seat portion from the viewpoint of safety and comfort in accordance with the different use forms of forward or backward. The object of the present invention is to provide a method from the time of the newborn and the baby to the time of the child and the schoolchild, and to achieve any use depending on the age of the infant. From the viewpoint of the safety and comfort of infants and young children, the seat structure of the childcare benefit of the best seat configuration. (Means for Solving the Problem) The seat structure of the childcare device of the present invention includes: a seat base portion; and a backrest portion that is coupled to the seat back through the first connecting shaft and the second connecting shaft Base section. Wherein, the first connecting shaft is mounted on one of the seat base portion or the backrest portion, and the other of the seat base portion or the backrest portion 323047 7 201202075 is formed to receive the first connecting shaft and guide the first connecting 'shaft The first guide groove to move. The second connecting shaft is attached to either one of the seat base portion or the backrest portion, and the other of the seat base portion or the backrest portion is formed with a second guide groove for receiving the second connecting shaft and guiding the movement of the second connecting shaft. According to this configuration, the backrest portion can be inserted into the seat base portion through the first and second connecting shafts, and the first and second guide grooves, and the backrest portion can be opposed to the extending direction of the first and second guide grooves. The seat base portion moves relative to each other. Therefore, the arrangement of the first and second guide grooves is appropriately designed, so that the position of the backrest portion and the angle of the backrest can be arbitrarily set, so that the safety and comfort can be achieved in accordance with the forward or backward use form. Good backrest configuration. Preferably, when the backrest portion is tilted from the first reclining position to the second reclining position, the first connecting sleeve is guided to move from one end of the first guiding groove to the other end, and the second connecting shaft is The manner of moving from one end of the second guide groove to the other end is guided. According to this configuration, when the backrest portion is at the position of the first rearward tilting position or the second rearward tilting position, the first connecting shaft is engaged with the end of the first guiding groove, and the second connecting shaft is engaged with the first connecting shaft. The end of the two guide grooves. Therefore, when the backrest portion is at the position of the first reclining position or the second reclining position, the contact area between the connecting shaft and the wall surface of the guide groove can be made larger, so that the engagement strength between the backrest portion and the seat base portion can be improved. . Therefore, the impact of the child seat during the impact accident can be improved. Preferably, the first guide groove is arranged to be arched upward.

S 323047

S 201202075 extends in a curved shape, and the second guide groove is provided to extend in a curved manner so as to bow toward the rear side. According to this configuration, the first and second connecting shafts smoothly move in a curved shape along the first and second guide grooves. Therefore, the backrest portion can be more smoothly poured from the first reclining position to the second reclining position. Preferably, the first connecting shaft is attached to the backrest portion, the first guide groove is formed in the seat base portion, the second connecting shaft is attached to the seat base portion, and the second guide groove is formed in the backrest portion. More preferably, the first guide groove is curved upwardly from the upper side, extending from the rear end of the first guide groove to the front end on the front lower side of the rear end, and the second guide groove is arched toward the rear side. Curved, extending from the upper end to the lower end. Moreover, when the backrest portion is tilted from the first rearward tilting position to the second rearward tilting position, the first connecting shaft is guided to move from the rear end of the first guiding groove to the front end, and the second connecting shaft is The manner in which the lower end of the second guide groove moves to the front end is guided. According to this configuration, when the backrest portion is tilted from the first reclining position to the second reclining position, the first connecting shaft moves toward the front lower side along the first guide groove. That is, the backrest portion moves to the front lower side together with the first connecting shaft. At the same time, the backrest portion is moved forward and downward by the second connecting shaft and the second guiding groove attached to the seat base portion, and the backrest portion is engaged with the predetermined position of the seat base portion. As described above, when the backrest portion is tilted from the first rearward tilting position to the second rearward tilting position, the backrest portion moves toward the front lower side and leans rearward relative to the seat base portion. Therefore, the backrest 9 323047 201202075 can be tilted backward without shifting the backrest portion from the position of the backrest portion at the rear tilt position to the back side. Preferably, the seat portion further includes a seat portion that is connected to the first connecting shaft through the first connecting shaft, and the seat portion and the seat base portion are coupled to each other through the third connecting shaft. The third connecting shaft is mounted on the seat or the base of the seat, and the other side of the seat or the seat of the county is extended in the front and rear direction to receive the third connecting shaft and guide the third. The three guide grooves for connecting the movement of the shaft. More preferably, the third connecting shaft is attached to the seat portion, and the third guide groove is formed at the seat base portion. According to this configuration, the seat portion moves toward the front side from the first rearward tilting position to the second rearward tilting position while moving toward the front lower side, and moves toward the front side in the extending direction of the third guide groove. That is, the position and the extending direction of the third guide groove are appropriately designed, whereby the angle between the backrest portion and the seat portion at the first rearward tilting position and the second rearward tilting position can be optimized. Therefore, an optimum configuration of the backrest portion and the seat portion can be made in the forward and backward use forms. Preferably, the base portion of the seat is further provided with an upwardly extending side with the first guiding groove for guiding the upward movement of the first connecting shaft to the upper four guiding slots, and when the first connecting shaft moves to the fourth guiding slot The first of the soil is dumped to the maximum recoil position, and the childcare apparatus becomes a bed state. According to this configuration, the backrest portion can be stepwise by the action of moving the first connecting shaft from the first guide groove to the front end and then from the front end of the first guide groove to the one of the fourth guide grooves. The rearward tilting is performed from the first tilting end to the second reclining position and then to the maximum reclining position. Because of the 323047 10 201202075 'easy operation', it is possible to change the form of the child seat from the forward use form to the backward form. It: the way to the bed state. In this way, • Wear and wear: Wear: The younger newborns who use the childcare equipment to adjust to the bed state ‘The period from the use period has been used to adjust the childcare equipment to the chair, the children and the children. Movement:: end: is: when the first connecting shaft is guided from the lower end of the fourth guiding groove to move from the upper end of the second guiding groove to the lower end bow (four) 4 from = = = to make the fourth guiding groove The front side shape extends from the lower 4 to the upper end. Construct a two-person* seat. According to this period, the children of the brothers and the children have been used to ensure the safety of infants and young children in the use of children and children, and to ensure that infants and toddlers can comfortably ride. Seat. (Effect of the Invention) - According to the present invention, the backrest portion is slidably coupled to the seat base portion through the first and second connecting shafts and the second and second guiding grooves, and is opposed to the first and second extending directions The seat base portion relatively moves the backrest portion. If the configuration of the first and second guide grooves is arbitrarily and arbitrarily, the position of the hinge and the angle of the backward tilt can be arbitrarily made, so that the safety and comfort can be achieved in response to the wide use of forward or backward (4). Very good backrest configuration. [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. In order to ensure the safety and comfort of the infants in the ride, 11 323047 201202075 covers the surface of the hard core material of the bones constituting the child seat with a member for absorbing impact, such as polyurethane foam ( A flexible member such as urethane foam). However, in the following description, based on the viewpoint of making the understanding easier, the members for impact absorption are not drawn, and only the core material of the skeleton constituting the child seat is drawn, and the present invention will be described. . First, a schematic configuration of a child seat 11 in an embodiment of the present invention will be described with reference to Figs. 1 and 2 . The figure is an overall perspective view of the child seat 11 in one embodiment of the present invention. Fig. 2 is an exploded perspective view of the child seat 11 shown in Fig. 1. In the following description, the directions seen by the infants sitting on the children's laps in front, back, left, and up and down are the benchmarks. The child seat U according to the embodiment of the present invention includes: an infant (not shown) that supports the seat 12' from below, a backrest 13 that supports the infant from the back, and a seat base portion 14, The seat portion 12 and the backrest portion 13 are supported from below. The seat portion 12 is rotatably coupled to the lower end of the backrest portion 13 through the first coupling shaft. The #back 13 is coupled to the seat base portion 14 via the first connecting shaft 15 and the second connecting shaft 16 provided on the seat base portion 14. Specifically, the seat base portion 14 is formed with a first guide 17 and a fourth guide groove 35 for receiving the substantially-shaped V-shaped connecting of the first connecting shaft 15, and the first guide groove 17 and the fourth guide groove 35 are Let use == stretch, keep it. The backrest portion 13 is formed with a second guide groove 18 for receiving the second connecting shaft 16, which is held by the second connecting shaft 16 extending into the interior thereof. Seat 2 323047 12 201202075 - Pass through the third connected M lq seat 14 provided in the seat 12. And f is like the production and transportation, and the axis 19 is connected to the bottom of the seat. Zhuang Yu is concrete and Lv, and is held in front of the seat of the base of the seat. The square dog if connecting shaft 19 extends into the inner center portion, the L portion 12, the back portion 13, and the seat base. . The second connecting shaft and the first to fourth guiding grooves are connected to each other. A configuration of the moon opening P 13 in the present embodiment will be described with reference to Figs. 3 to 5 . Fig. 3 is a perspective view of the entire backrest portion u in the present embodiment. Fig. 4 is a side view of the backrest portion 13 shown in Fig. 3 as seen from the right side. Fig. 5 is a plan view of the backrest portion 13 shown in Fig. 3 as seen from above. Referring to FIGS. 3 to 5, the backrest portion 13 has a back wall portion 21 that extends in the vertical direction and abuts against the back of the infant who is seated; and the left and right sides i 4 22, 23' from the back wall portion 21 The left and right side ends extend forward. The left and right side wall portions 22, 23 are provided in a form extending from the lower end of the back wall portion 21 to the upper jaw. In order to improve the comfort of the infant in the ride, the back wall portion 21 and the left and right side wall portions 22, 23 are integrally formed to be smoothly connected to each other. The lower end portion 24 of the back wall portion 21 is provided with a through hole 25 penetrating in the left-right direction. The through hole 25 is inserted through the first connecting shaft 15 described above. A left second guide groove l8a extending in a curved shape in the vertical direction is disposed slightly below the center of the left side wall portion 22, and a right second guide portion extending in a curved shape in the up and down direction is provided slightly below the center of the right side wall portion 23. Slot 18b. 13 323047 201202075 The left second guide groove 18a is formed to be formed in a curved shape from the upper end 26 to the lower end 27 to the rear side, that is, to the back surface of the backrest portion 13. The same right second guide groove 18b is formed to have a curved shape that is bowed toward the back side of the backrest portion 13 from the upper end 28 to the lower end 29. In the present embodiment, the left and right second guide grooves 18a and 18b are symmetrically disposed at the same positions of the left and right side wall portions 22 and 23, and are all through grooves that penetrate the left and right side wall portions 22 and 23. Next, the configuration of the seat base portion 14 in the present embodiment will be described with reference to Figs. 6 to 9 . Fig. 6 is an overall perspective view of the seat base portion 14 in the present embodiment. Fig. 7 is a side view of the seat base portion 14 shown in Fig. 6 as seen from the right side. Fig. 8 is a side view of the seat base portion 14 shown in Fig. 6 as seen from the left side. Fig. 9 is a plan view of the seat base portion 14 shown in Fig. 6 as seen from above. Referring to FIGS. 6 to 9, the seat base portion 14 has a seat wall portion 28, and the left and right armrest portions 29 and 30 rise upward from the left and right end portions of the seat wall portion 28; the front wall portion 31 and the partition wall portion 28 The front end portion rises upward and extends straight from the left armrest portion 29 to the right armrest portion 30; and the rear wall portion 32 rises upward from the rear end portion of the seat wall portion 28 and extends straight from the left armrest portion 29 to the right The armrest portion 30. On the lower side of the center of the right armrest portion 30, a right first guide groove 17b and a right fourth guide groove 35b which are connected in a substantially V shape are provided. More specifically, the right first guide groove 17b extends from the rear end 33 to the front end 34 on the lower front side of the rear end 33, and is formed in a curved shape that is bowed toward the upper side. The fourth fourth guiding groove 35b extends from the front end 34 of the right first guiding groove 17b. 14 323047

S 201202075 is located at the upper upper end 36 of the front end 34, and is formed in a curved shape that is bowed toward the front side. The right first guide groove 17b and the right fourth guide groove 35b are through grooves having the same width. A third right guide groove 20b extending in the front-rear direction is further provided on the front side of the right fourth guide groove 35b. The right third guide groove 20b is provided to extend from the rear end 38 to the front upper end side 39 of the rear end 38, and has a substantially straight shape. Further, a notch portion 37 formed to be recessed upward from the front end 39 is provided at the front end 39 of the right third guide groove 20b. The inner wall surface 40 of the right armrest portion 30 is provided with an inner side direction facing the seat base portion 14, that is, a right second connecting shaft 16b which is provided to protrude toward the opposite left armrest portion 29. More specifically, the right second connecting shaft 16b is disposed on the upper rear side of the rear end 33 of the right first guide groove 17b, and is provided from the inner wall surface 40 of the right armrest portion 30 toward the left armrest portion 29 side. A rod-like member that extends horizontally. Like the right armrest portion 30, on the lower side of the center of the left armrest portion 29, a left first guide groove 17a and a left fourth guide groove 35a which are connected in a substantially V shape are provided. Specifically, the left first guide groove 17a extends from the rear end 41 to the front end 42 on the front lower side of the rear end 41, and is formed in a curved shape that is arched toward the upper side. The fourth fourth guide groove 35a extends from the front end 42 of the left first guide groove 17a to the upper end 43 on the front upper side of the front end 42, and is formed in a curved shape that is bowed toward the front side. The left first guide groove 17a and the left fourth guide groove 35a are through grooves having the same width. 15 323047 201202075 A left third guide groove 20a extending in the front-rear direction is further provided on the front side of the left fourth guide groove 35a. The left third guide groove 2A is provided to extend from the rear end 44 to the front end 45 on the front upper side of the rear end 44, and has a substantially straight shape. Further, a notch portion 46 formed to be recessed upward from the front end 45 is provided at the front end 45 of the left third guide groove 2A. The inner wall surface 47 of the left armrest portion 29 is provided with a left second connecting shaft 16a which is provided to protrude toward the right armrest portion 30 side. More specifically, the left second connecting shaft 16a is disposed on the upper rear side of the rear end 41 of the left first guide groove, and is disposed substantially horizontally from the inner wall surface 47 of the left armrest portion 29 toward the right armrest portion 30 side. Extending rod-like members. In the present embodiment, the left and right first guide grooves 17a and 17b, the left and right second guide grooves 20a and 20b, the left and right fourth guide grooves 35a and 35b, and the left and right second connecting shafts 16a and 16b are symmetrically arranged with each other. At the same position of the left and right armrest portions 29, 30. As shown in Fig. 1, when the left and right armrest portions 29 and 30 are assembled to the child seat 11, they are placed on the backrest portion 13 so as to be in contact with the outer wall surfaces of the left and right side wall portions 22 and 23 of the backrest portion 13 and overlap each other. The outside. By this, it is possible to protect the infant from the impact of the left and right direction of the infant from the ride on the double-handed structure of the hand portion provided on the seat base portion 14 and the side wall portion provided on the backrest portion 13. Therefore, it is preferable to appropriately set the shape and thickness of the backrest portion 13 and the shape, height, thickness, and the like of the left and right armrest portions 29, 30 with respect to the strength of the impact from the right and left directions. Next, the 16th to 12th drawings will be used to explain the 16 323047 in this embodiment.

S 201202075 The structure of the seat 12. Fig. 10 is a perspective view showing the entire seat portion 12 in the present embodiment. Fig. 11 is a front view of the seat portion 12 shown in Fig. 10. Fig. 12 is a side view of the seat portion 12 shown in Fig. 10 as seen from the right side. Referring to Figs. 10 to 12, the seat portion 12 has a bottom wall portion 48 that abuts against the buttocks of the infant who is seated from below, and left and right side wall portions 49, 50 that are upward from the left and right side ends of the bottom wall portion 48. The side of the side is raised. In order to improve the comfort of the infant who is sitting, the bottom wall portion 48 and the left and right side wall portions 49, 50 are integrally formed to be smoothly connected to each other. A connecting shaft mounting portion 52 that protrudes downward from the lower surface 51 is provided at a left end portion of the lower surface 51 of the bottom wall portion 48, and the left third connecting shaft 19a is attached to the outer side from the connecting shaft mounting portion 52 to be substantially horizontal. extend. Similarly, a connecting shaft attaching portion 53 projecting downward from the lower surface 51 is provided at the right end portion of the lower surface 51, and the right third connecting shaft 19b is attached so as to extend substantially horizontally from the connecting shaft attaching portion 53 to the outside. The connecting shaft attachment portions 52 and 53 are provided on the front side of the bottom wall portion 48 in the front-rear direction, and are formed on the front side wall portion 48. A connecting shaft insertion portion 55 that protrudes rearward is provided at a rear end of the right end portion of the bottom wall portion 48. A through groove 57 extending substantially linearly in the front-rear direction from the rear end 60 to the front end 61 is formed in a central portion of the connecting shaft insertion portion 55. Similarly, a connecting shaft insertion portion 54 that protrudes rearward is provided at the rear end of the left end portion of the bottom wall portion 48. The connecting shaft insertion portion 54 is formed with a through groove 56 extending substantially linearly from the rear end 58 to the front end 59 in the front-rear direction. Next, the assembly structure of the 17 323 047 201202075 child seat 11 in the present embodiment will be described with reference to Figs. 1 to 12 . Referring to FIGS. 1 to 12, the lower end portion 24 of the backrest portion 13 is disposed in a space between the connection shaft insertion portion 54 and the connection shaft insertion portion 55, and the through hole 25 provided in the lower end portion 24 of the backrest portion 13 is provided. The through grooves 56 and 57 of the connecting shaft insertion portions 54 and 55 provided in the seat portion 12 are in communication with each other. Then, the first connecting shaft 15 is inserted so as to pass through the through hole 25 and the through grooves 56, 57. In this way, the seat portion 12 is rotatably coupled to the lower end portion 24 of the backrest portion 13 through the first connecting shaft 15. Here, the first connecting shaft 15 is formed to be longer than the width between the inner wall surface 47 of the left armrest portion 29 of the seat base portion 14 and the inner wall surface 40 of the right armrest portion 30. Further, the left end portion of the first connecting shaft 15 is inserted into the left first guide groove 17a and the left fourth guide groove 35a of the left armrest portion 29 so as to be connected in a substantially V shape, and held therein. Similarly, the right end portion of the first connecting shaft 15 is inserted into the right first guide groove 17b and the right fourth guide groove 35b of the right armrest portion 30 in a substantially V-shaped manner and held therein. In this manner, the lower end portion 24 of the backrest portion 13 and the connecting shaft insertion portions 54, 55 corresponding to the rear end portion of the seat portion 12 are engaged with the seat base portion 14 through the first connecting shaft 15. The left side second connecting shaft 16a of the inner wall portion 47 of the left armrest portion 29 provided in the seat base portion 14 is inserted into the left second guide groove 18a provided on the left side wall portion 22 of the backrest portion 13. Further, the second connecting shaft 16b provided on the right side of the inner wall surface 40 of the right armrest portion 30 is inserted into the right second guide groove 18b provided in the right side wall portion 23 of the backrest portion 13. Thus, the backrest portion 13 is engaged with the seat base portion 14 through the second connecting shaft 16 and the second guide groove 18. Also 18 323047

S 201202075 That is, the backrest portion 13 is inserted into the seat base portion 14 through the two shafts of the first connecting shaft 15 and the second connecting shaft 16 as described above. The left third connecting shaft 19a attached to the connecting shaft mounting portion 52 of the seat portion 12 is inserted into the left third guide groove 20a provided in the left armrest portion 29 of the seat base portion 14 and held therein. Further, the right third connecting shaft 19b of the connecting shaft mounting portion 53 attached to the seat portion 12 is inserted into the right third guide groove 20b provided in the right armrest portion 30 and held therein. In this manner, the seat portion 12 is engaged with the seat base portion 14 through the first connecting shaft 15 and the third connecting shaft 19. As described above, the seat portion 12, the backrest portion 13, and the seat base portion 14 are coupled and assembled by the first to third connecting shafts and the first to fourth guide grooves that receive and hold the connecting shafts. Thus, the child seat 11 shown in Fig. 1 is constructed. Next, the reclining structure of the child seat 11 in the present embodiment will be described with reference to Figs. 13 to 15 . Fig. 13 is a side view of the child seat u in the case where the backrest portion 13 is in the first rearward tilting position as viewed from the right side. Fig. 14 is a side view of the child seat 11 in the case where the backrest portion 13 is tilted from the first reclining position to the second reclining position as viewed from the right side. Fig. 15 is a side view of the child seat 11 in the case where the backrest portion 13 is tilted to the maximum reclining position as viewed from the right side. Referring to Figures 13 to 15, in the case where the backrest portion 13 is at the first rearward tilting position, the first connecting shaft 15 is in contact with the rear ends 33, 41 of the left first guide and the right first guide groove 17b. The location. Further, the lower end portion 24 of the back portion 13 and the connecting shaft corresponding to the rear end portion of the seat portion 12 323047 19 201202075 The insertion portions 54, 55 are located at the rear ends 33, 41 of the seat base portion 14. At the same time, the second connecting shaft 16a disposed on the left side of the seat base portion 14 is located at a position abutting against the lower end 27 of the second guide groove 18a provided on the left side of the backrest portion 13, and the right second connecting shaft 16b is located on the right side. The lower end 29 of the second guide groove 18b abuts the position. In this state, the reclining angle of the backrest portion 13 is defined by the position of the connecting shaft 16 provided at the seat bottom portion 14 and the positions of the rear ends 33, 41 of the first guide groove 17. That is, the reclining angle of the backrest portion 13 at the first reclining position is similar to that shown in Fig. 13 by the connecting shaft 16 and the connecting shaft 15 abutting against the rear ends 33, 41. The angle between the line 62 and the direction of the straight line is 0 I. Further, the left third connecting shaft iga provided on the left side of the seat portion 12 is disposed to abut against the rear end 44 of the left third guide groove 2A provided in the seat base portion 14 and the right second connecting shaft 19b is disposed. It abuts against the rear end 38 of the right third guide groove 2〇b. That is, the angle of the seat portion 12 relative to the backrest portion 13 is defined by the position of the rear end portions 38, 44 of the third guide groove 2'' with respect to the rear ends 33, 41 of the first guide groove. When the sinus 13 is tilted from the first rearward tilt position shown in FIG. 13 to the second rear tilt position shown in FIG. 14, the first connecting shaft 15 starts from the rear ends 33, 41 of the first guide groove 17. It is guided to the front lower side along the extending direction of the first guide groove 17 and moved to the positions of the front ends 34 and 42 of the first guide groove 17. At the same time, the second connecting shaft disposed on the left side of the seat base portion 14 is guided by the left second guide groove 18a, and is relatively moved from the lower end 27 of the second guide groove 18a provided on the left side of the backrest portion 13 to the upper end. Position, and right side 323047 20 201202075 - The second connecting shaft 16b will relatively move from the lower end 29 of the right second guide groove i8b to the position of the upper end 28. • In this state, the reclining angle of the backrest portion 13 is defined by the position of the connecting shaft 16 of the seat portion 14 and the position of the front ends 34 and 42 of the first guide groove 17. That is, the reclining angle of the backrest portion 3 at the second reclining position can be expressed as shown in Fig. 14 by a line drawn by the connecting shaft 16 and the connecting shaft 15 at the front ends 34, 42. The angle between 63 and the wrong direction is Θ2. In addition, the third connecting shaft 19a disposed on the left side of the seat portion 12 is moved from the rear end 44 of the second guide groove 20a disposed on the left side of the seat base portion 丨4 to the front end under the guidance of the left second guide 20a. At the position of 45, the right third connecting shaft 19b is moved from the rear end 38 of the right third guide groove 2b to the position of the front end 39. In this manner, the seat portion 12 moves from the first rearward tilting position to the second rearward tilting position as the backrest portion 13 moves toward the front lower side, and moves toward the front side along the extending direction of the second guide groove 20. . That is, the angle of the seat portion 12 relative to the backrest portion 13 is defined by the position of the front ends 39, 45 of the third guide groove 20 with respect to the front ends 34, 42 of the first guide groove 17. As described above, in the child seat U of the present embodiment, when the backrest portion 13 is tilted from the first rear tilt position to the second rear tilt position, the backrest portion η moves toward the front lower side and is tilted backward from the figure 13 The angle 51 4 is inverted to the rear tilt angle Θ2 shown in Fig. 14. According to this configuration, as shown in Fig. 14, the backrest portion 13 can be made to be largely displaced without shifting the backrest portion 13 from the position of the first reclining position (the two-dot chain line A in Fig. 14) toward the back side. Department 丨 3 backwards. By this, it is possible to realize the configuration of the backrest portion 13 which can take care of the safety of the infant who is sitting on the 323047 21 201202075 in both the forward and the backward. This point is explained below. The child seat is generally placed on the seat of the car and is secured by the use of a safety belt. Here, the seat of the automobile has a slanting inclination toward the front of the vehicle body in view of the user's riding feeling and the like. Therefore, in the case of changing from the forward use form to the backward use form, the user necessarily needs to adjust the backrest portion to the back side to be adjusted to be suitable for backward use of the green back angle. In this case, in the conventional child seat, as described above, the backrest portion is rotated centering on one of the fixed connecting shafts, so that the backrest portion is turned toward the back side, that is, toward the front side of the vehicle body. It is inevitable that the head of the infant will be moved to the front side of the vehicle body. On the other hand, in the child seat 11 of the present embodiment, as described above, the backrest portion 13 can be made forward by the two connecting shafts 15, 16 that are relatively moved inside the guide groove. Move below and back tilt. Therefore, as shown in Fig. 14, even if the backrest portion 13 is tilted from the first rear tilt position to the second rear tilt position, the backrest portion 13 is not largely displaced toward the back side as viewed from the seat base portion 14. Therefore, even if the child seat 11 is changed to the rearward use mode, the need to lean back the backrest portion can be made almost constant in the front-rear position of the infant's head. In this case, the backrest portion 13 is tilted backward. In this manner, even if the backrest portion is tilted backward in the rearward use mode, the head of the infant can be placed at a position close to the rear side of the vehicle body. Therefore, the child seat 11 of the present embodiment can be realized in the forward direction. In the latter two forms of use, the fullness of the child in the event of a crash reported the seat structure of a good child seat. 22 323047

S 201202075 In addition, the reclining angles θ丨 and θ2 of the child seat n and the back 13 of the present embodiment are defined by the arrangement of the first guide 18 and the second connecting shaft 16, and the seat is guided. The angle of the back 13 of the soil is determined by the third channel 2 () relative to the first channel. Therefore, it is best to design the layout and extension direction of these guide grooves and the position of the second connection shaft 16 to make the best of the infants. a reclining angle, a second reclining angle suitable for the rearward use pattern, and an angle of the backrest portion 13 of the seat #12 with respect to various reclining angles. Further, in the present embodiment, when the backrest portion 13 is at the first rear tilt position, the first connecting shaft 15 abuts against the rear end 41 of the left first guide groove i7a and the rear end of the right first guide groove 17b. 33. Further, the left second connecting shaft 16a abuts against the lower end 27 of the left second guide groove 18a and the right second connecting shaft 16b abuts against the lower end 29 of the right second guide groove 8t). Further, the first connecting shaft 15 is located at the position of the front end 42 of the left first guide groove 17a and the front end 34 of the right first guide groove 17b. Further, the left second connecting shaft 16a abuts against the upper end 26 of the left second guide groove 18a, and the right second connecting shaft i6b abuts against the upper end 28 of the right second guide groove 18b. According to this configuration, in the case where the backrest portion 13 is located at the positions of the first rear tilting position and the second rear tilting position, the first connecting shaft 15 is engaged with the end portion of the first guide groove 17, and the second connecting shaft 16 will be stuck at the end of the second guide groove 18. In this way, when the backrest portion 13 is at the position of the first rear tilting position or the second rear tilting position, the contact area between the connecting shaft and the wall surface of the guide groove can be made larger than 23 323 047 201202075', so that the backrest portion 13 is snapped to the seat. The strength of the base portion 14 is increased. Therefore, the impact resistance of the child seat U at the time of an impact accident can be improved. When the backrest portion 13 is tilted from the second rearward tilting position shown in Fig. 14 to the maximum backward tilting position shown in Fig. 15, The connecting shaft 15 is guided upward from the front ends 34, 42 of the first guide grooves 17 in the extending direction of the fourth guide grooves 35, and moved to the positions of the upper ends 36, 43 of the fourth guide grooves. That is, the lower end portion 24 of the backrest portion 13 is raised upward to the upper ends 36, 43. At the same time, the second connecting shaft 16a disposed on the left side of the seat base portion 14 is relatively moved from the upper end 26 of the second guide groove 18a provided on the left side of the backrest portion 丨3 to the position of the lower end 27, and the second connecting shaft 16b of the right side is Relatively moved from the upper end 28 of the right second guide groove 18b to the position of the lower end 29. In this state, the reclining angle of the backrest portion 13 is defined by the position of the connecting shaft 16 provided at the seat bottom portion 14 and the positions of the upper ends 36, 43 of the fourth guide groove 35. That is, the reclining angle of the backrest portion 13 at the maximum reclining position can be expressed as shown in Fig. 15 by drawing: by connecting the gentleman shaft 16 and the connecting shaft 15 abutting the upper ends 36, 43 The angle 64 between the line 64 and the gold L is Θ3. In the seat portion 12, the connecting shaft insertion portions 54, 55 corresponding to the rear end portion of the seat portion 12 are lifted upward as the first connecting shaft 15 moves. At this time, the positions of the first connecting shaft 15 are relatively opposite from the rear ends 58 and 60 of the through grooves 56 and 57 in the inside of the through grooves 56 and 5 provided in the connecting shaft insertion portions 54 and 55. 59, 61 move. At the same time, the left third connecting shaft 19a provided on the left side of the seat portion 12 moves upward from the front end 45 of the left third guide groove 20a provided in the seat base portion 14 to enter the defect 323047 24 201202075 The shaft 19b enters the notch portion 37 by missing 1537 and 1 ft from the front end of the right third guide groove 20b. These through grooves 56, 57 and 'two' play a smooth movement of the ρ / / / 12 which is used to allow the "play" of the movement of the seat portion I2. Thus, when the seat portion 12 is fitted with the maximum rearward tilting position, it is moved to a large extent and is tilted to the level of the 靠背 在 at the backrest portion 13. In this state, the angles of the phases q, ° of the seat portion 12 are defined by the positions of the π-free portions 37, 46 with respect to the upper ends 36, 43 of the fourth guide groove 35. The child seat 11 of the embodiment of the present invention moves to the front end 34 by moving the rear ends 33, 41 of the first f9: two guide grooves 17, and moves from the front ends 34, 42 of the first guide groove 17 to The series of actions of the upper ends 36, 43 of the fourth guide groove 35 allows the backrest portion 13 to be stepped in a stepwise manner from the first backward tilting position to the second backward tilting position to the maximum backward tilting position. Therefore, the user changes the form of the child seat U from the forward use form to the backward use form and then to the bed form by the easy operation as described above. Thus, the child of the present embodiment The seat 11 can be used to adjust the child seat to the younger ones and the babies who use the child's seat to the bed. Most of the time (4) is to adjust the child's shop to the period of the child and the schoolchildren in the chair state. In the child seat u of the embodiment, the inclination angle 03 of the backrest portion 13 after the maximum reclining position is defined by the arrangement of the fourth guide groove 35, the second guide groove 18, and the second coupling shaft 16, and the relative position of the seat portion 12 is The angle of the backrest portion 13 is defined by the third guide groove 2 opposite to the fourth guide groove 35 The arrangement of the ends 36, 43 is stipulated. Thus, by appropriately designing the position and the extending direction of the end portions of the guide grooves 323047 25 201202075 and the position of the second connecting shaft 16, the safety and ride of the infant can be made. The viewpoint of comfort is the optimum maximum backward tilt angle for the bed form and the angle of the bed form relative to the seat portion 12 of the backrest portion 13. That is, the child seat 11 of the present embodiment. It can be used from the time of newborns and babies to the period of children and schoolchildren, and any form of use in the forward, backward and bed conditions can improve the safety of infants and children and the comfort of infants and young children in the event of an accident. Further, in the child seat U of the present embodiment, as described above, the backrest portion 13 is stepped backward in a manner from the first rearward tilting position to the second rearward tilting position to the maximum backward tilting position. The first connecting shaft 15 first moves forward and downward, and then moves forward and upward. Further, as the first connecting shaft 15 moves, the backrest portion 13 and the seat portion 12 also move toward the front side in a stepwise manner. which is, The child seat 11 according to the embodiment is configured such that when the chair state is changed to the bed state, the positions of the backrest portion 13 and the seat portion 12 are moved to the front side. Thus, since the bed state can be sinned back 13 The center of gravity of the seat portion 12 is closer to the center position of the seat base portion 14 so that the center of gravity of the child seat 11 can be more stabilized. In the child seat 11 of the present embodiment, the backrest portion 13 is formed from the second When the reclining position is tilted to the maximum reclining position, the backrest portion 13 is not tilted with the first link pumping 15 as a reference point of rotation, but is rotated by the second link shaft 16 disposed at a higher position of the seat base portion 14 In the case where the child seat 11 of the present embodiment is placed in a bed state, the backrest portion 13 and the seat portion 12 are locked with reference to the position of the second connecting shaft 16 . So can make the backrest parts 13 and 26 323047

S 201202075 Seat 12 is in a higher position. In this way, when the child seat 11 is placed in a bed state in the automobile, the backrest portion 13 and the seat portion 12 can be positioned above the hand portion provided on the inner wall of the left and right doors of the automobile, so that the backrest portion 13 and the backrest portion 13 can be prevented. The seat portion 12 interferes with the hand of the door. Further, in the child seat 11 of the present embodiment, the first guide groove 17, the second guide groove 18, and the fourth guide groove 35 are all provided in a shape extending in a curved shape. According to this configuration, the first connecting shaft 15 and the second connecting shaft 16 are smoothly curved in the first guide groove 17, the second guide groove 18, and the fourth guide groove 35 along the extending direction of each guide groove. mobile. Therefore, the backrest portion 13 can be more smoothly poured from the first reclining position to the second reclining position, and then poured to the maximum reclining position. Furthermore, the child seat 11 can be further provided with a locking mechanism for locking the backrest portion 13 when the backrest portion 13 is in the first reclining position, the second reclining position and the maximum reclining position. The seat base portion 14 is stopped. For example, the lock mechanism may be constituted by a first locking through hole provided in the left and right side wall portions 22 and 23 of the backrest portion 13 and a second locking through hole in the left and right armrest portions 29 of the seat base portion 14. And three positions of 30 are arranged to communicate with the first locking through hole when the backrest portion 13 is at each of the first rearward tilting position, the second rearward tilting position, and the maximum rearward tilting position; and the locking pin When the backrest portion 13 is at the first rearward tilting position, the second rearward tilting position, and the maximum rearward tilting position, the first locking through hole and the second locking through hole are inserted. According to this configuration, the backrest portion 13 can be locked in the first rearward tilting position, the second rearward tilting position, and the maximum rearward tilting position by the locking pin, so that the impact durability of the child seat 11 at the time of an impact accident can be made more 27 323047 201202075 for improvement. Furthermore, in the above-described embodiment, the case where the first connecting shaft is attached to the lower end portion of the backrest portion and the first guide groove is provided at the seat base portion will be described. However, the present invention is not limited thereto, and the present invention is not limited thereto. The first connecting shaft or the first guiding groove is provided on one of the backrest portion or the seat base portion. Further, in the above-described embodiment, the case where the second connecting shaft is provided in the seat base portion and the second guide groove is provided in the backrest portion will be described. However, the present invention is not limited thereto, and the second connecting shaft or the second connecting shaft may be used. The third guide slot is placed on either the backrest or the base of the seat. Further, in the above-described embodiment, the case where the third connecting shaft is provided in the seat portion and the third guide groove is provided in the seat base portion will be described. However, the present invention is not limited thereto, and the third connecting shaft or the third connecting shaft or The third guide groove is disposed on either one of the seat portion or the seat base portion. Furthermore, in the above embodiment, the first to third connecting shafts are brought into contact with the end portions of the guide grooves in the first rearward tilting position, the second rearward tilting position, and the maximum backward tilting position in the backrest portion. Although the case is described, the present invention is not limited thereto, and the connecting shaft may not be formed with the end portion of the guide groove even when the backrest portion is in the first rearward tilting position, the second rearward tilting position, and the maximum backward tilting position. The composition of the abutment. Furthermore, in the above-described embodiment, the case where the first guide groove is provided to extend from the rear end toward the front lower side to the front end will be described. However, the present invention is not limited thereto, and may be provided from the rear end. Extend to the front side. In other words, in order to obtain the above-described effects of the present invention, the first guide groove, the second guide groove, and the second connecting shaft may be provided so as to be tilted while moving the backrest portion toward the front side. 28 323047

S 201202075 In addition, in the above-described embodiment, the seat portion is coupled to the backrest portion through the first connecting shaft, and is coupled to the seat base portion through the third connecting shaft, so that the seat portion also follows the backrest portion. Although the configuration of the ground movement will be described, the seat portion and the backrest portion may be separated from each other and attached to the seat base portion. This is because the effect of the present invention described above can be obtained even if only the backrest portion is tilted from the first rear tilt position to the second rear tilt position as described above, and the seat portion is fixed to other members. In the above embodiment, the fourth guide groove is provided in the seat base portion, and the child seat can be in a bed state. However, the present invention is not limited thereto, and the fourth guide groove may not be provided. The configuration, that is, the configuration may be such that only the child seat is formed into a forward and backward chair state. Further, in the above embodiment, the case where the seat structure of the present invention is applied to a child seat will be described. However, the present invention is not limited thereto, and the present invention can be advantageously applied to a baby carriage or a baby chair (baby chair). ), etc., which have various types of childcare appliances with a reclining seat structure. Although the above embodiments have been described with reference to the drawings, the present invention is not limited to the embodiments of the drawings. Various modifications or changes can be made to the embodiment of the drawings within the scope of the same or equivalents. [Industrial Applicability] The present invention provides a seat structure for a childcare device that can improve the safety and comfort of an infant who is riding. It is advantageous to use various types of childcare devices having a seat structure. 29 323047 201202075 [Brief Description of the Drawings] Fig. 1 is an overall perspective view of a child seat in an embodiment of the present invention. Fig. 2 is an exploded perspective view of the child seat shown in Fig. 1. Fig. 3 is a perspective view showing the entire backrest portion in an embodiment of the present invention. Fig. 4 is a side view of the backrest portion shown in Fig. 3 as seen from the right side. Fig. 5 is a plan view of the backrest portion shown in Fig. 3 as seen from above. Fig. 6 is a perspective view showing the entirety of a seat base portion in an embodiment of the present invention. Fig. 7 is a side view of the seat base portion shown in Fig. 6 as seen from the right side. Fig. 8 is a side view of the seat base portion shown in Fig. 6 as seen from the left side. Fig. 9 is a plan view of the seat base portion of Fig. 6 seen from above. Fig. 10 is a perspective view showing the entire portion of the seat portion in the embodiment of the present invention. The πth diagram is a front view of the seat shown in Fig. 10. Fig. 12 is a side view of the seat portion shown in Fig. 10 as viewed from the right side. Figure 13 is a side view of the child seat in the case where the backrest portion is in the first reclining position as viewed from the right side. Fig. 14 is a side view of the child seat in the case where the backrest portion is tilted from the first reclining position to the second rearward tilting position as viewed from the right side. 323047

S 30 201202075 Fig. 15 is a side view of the child seat in the case where the backrest portion is tilted to the maximum reclining position as viewed from the right side. [Description of main components] 11 Infant seat 12 Seat 13 Backrest 14 Seat base 15 First connecting shaft 16 Second connecting shaft 16a Left second connecting shaft 16b Right second connecting shaft 17 First guide groove 17a Left side One guide groove 17b right first guide groove 18 second guide groove 18a left side second guide groove 18b right second guide groove 19 third joint shaft 19a left third joint shaft 19b right third joint shaft 20 third guide groove 20a Left third guide groove 20b Right third guide groove 21 Back wall portion 11, 49 Left side wall portion 23, 50 Right side wall portion 24 Lower end portion 25 Through hole 26 ' 28 ' 36, 43 Upper end 27, 29 Lower end 28 ' 48 Bottom wall portion 29 Left armrest portion 30 Right armrest portion 31 Front wall portion 32 Rear wall portion 33, 38, 4, 44, 58, 60 Rear end 34, 39, 42, 45, 59, 61 Front end 35 Fourth guide groove 35a 4th guide groove 35b on the left side 4th guide groove 37' on the right side 46 Notch portion 40, 47 Inner wall surface 51 Lower surface 31 323047 201202075 52, 53 Connecting shaft mounting portions 54, 55 Connecting shaft insertion portions 56, 57 through groove 62, 63, 64 lines 32 32 3047

S

Claims (1)

201202075 . VII. The scope of the patent application: 1. The seat structure of the childcare device, comprising: a seat base portion; and a backrest portion that is connected to the front through the first connecting shaft and the second connecting shaft a seat base portion; the first connecting shaft is attached to one of the seat base portion or the backrest portion, and the seat base portion or the backrest portion of the backrest portion is formed to receive the first connecting shaft and guide the a first guide groove for moving the first connecting shaft; the second connecting shaft is attached to one of the seat base portion or the sin back, and the seat base portion or the backrest portion of the backrest portion is formed to receive the aforementioned a first connecting shaft and guiding the second guiding groove of the movement of the second connecting shaft. 2. The seating structure of the childcare device of claim 1, wherein the first connecting shaft is from the first guide when the backrest portion is tilted from the first reclining position to the second reclining position One end of the groove is guided to move the other end, and the second connecting shaft is guided to move from one end to the other end of the second guide groove. The seat structure of the childcare device according to the first aspect of the invention, wherein the first guide groove extends in a curved shape which is arched upward, and the second guide groove is arched toward the rear side. Curved extension. 4. The seat structure of the child care device according to claim 1, wherein the first connecting shaft is attached to the backrest portion, and the first guide cross is formed in the seat base portion; The two connecting shafts are attached to the seat base portion, and the second guide groove is formed on the backrest portion. 5. The seat structure of the childcare device of claim 4, wherein the first guide groove is curved upwardly from the upper side, and extends from the rear end of the first guide groove to the rear end. a front end lower front side; the first guide groove is curved in a curved shape toward the rear side, extending from the upper end to the lower end; and the backrest portion is tilted from the first backward tilting position to the second rear reclining position And the first connecting shaft is guided to move from the rear end of the first guiding groove to the front end, and the second connecting shaft is guided to move from the lower end of the second guiding groove to the upper creeping manner. lead. 6. The seat structure of the childcare device according to claim 1, wherein the seat portion is coupled to the backrest portion through the first connecting shaft; the seat portion and the seat base portion are transmitted through The third connecting shaft is coupled to the seat portion or the seat base portion, and the other of the seat portion or the seat base portion is formed to extend in the front-rear direction. The third connecting shaft guides a third guide groove that moves the third connecting shaft. The seat structure of the childcare device according to the sixth aspect of the invention, wherein the third coupling shaft is attached to the seat portion, and the third guide groove is formed in the seat base portion. . 8. The seat structure of the childcare device according to claim 5, wherein the seat base portion S has a fourth guide groove, and the fourth guide groove is connected to the front end of the first guide groove and upward. a lateral extension for guiding the bow to move upwardly of the first connecting shaft. When the first connecting shaft moves to the upper end of the fourth guiding slot, the backrest portion is tilted to a maximum backward tilting position, and the childcare device becomes a bed status. 9. The seat structure of the childcare device of claim 8, wherein the second connecting shaft is from the second guide when the first connecting shaft moves from the lower end to the upper end of the fourth guiding groove The manner in which the upper end of the groove is swung to the lower end is guided. 10. The seat structure of a childcare device according to claim 8, wherein the fourth guide groove is curved from the squat to the upper end by a curved shape of the front side of the ridge. 11. The seat structure of a childcare device according to claim 1, wherein the childcare device is used in a child seat of an automobile. 3 323047