child seat

Abstract

To provide a child seat which has the excellent operability when a seat rotates, reclines, slides with respect to a base.SOLUTION: A child seat according to the present invention comprises: a seat on which an infant is seated; reclining which is attached to a vehicle seat, with which the seat rotates around an axis and the seat reclines at a different inclination angle; and a base which supports the seat so as to be able to perform any one movement of slides that linearly move. The child seat includes: a protrusion which is engaged by being biased so as to protrude from the seat lower surface toward a recess of the base, and can fix the seat on the base; and a plurality of operation members which are connected to the protrusion and can reduce a protrusion amount of the protrusion from the seat lower surface by being operated in the opposite biasing direction. Even with any one operation of the plurality of operation members, the protrusion amount of the protrusion from the seat lower surface is reduced, and the seat can perform one movement of rotation, reclining and slide.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a child car seat in which a seat for a baby or toddler can rotate, recline, or slide relative to a base attached to a vehicle seat. [Background technology]

[0002] It is now mandatory by law to use a child car seat when driving with infants and young children. Various child car seats have been proposed in the past. The child car seat disclosed in Patent Document 1 is configured such that the seat (seat body) is supported on a base (receiving platform) so that it can be reclined and rotated, and the amount of retraction of a protruding member is linked to the amount of protrusion of an operating member. A first operation amount of the operating member, which is required to obtain the amount of retraction of the protruding member necessary to slide the seat between multiple reclining positions, is smaller than a second operation amount of the operating member, which is required to obtain the amount of retraction of the protruding member necessary to slide the seat body from one of the multiple reclining positions to a rotation position. This effectively prevents the seat from unintentionally moving to a position where it can be rotated.

[0003] However, the child car seat disclosed in Patent Document 1 has only one operating member, and when the operator operates this operating member from either the left or right door side of the vehicle, the operating member must be located at the front or rear of the seat so that it can be operated from either the left or right door side. This means that the operating member is located far away from the operator operating from the door side, and operability is poor, for example, because the operator must bend down inside the vehicle to operate it when outside the vehicle. Furthermore, operability is extremely poor when force is required to operate it. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5306727 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, the problem to be solved by the present invention is to provide a child car seat that is easy to operate when the seat rotates, reclines, and slides relative to the base. Another object of the present invention is to provide a child seat in which the number of parts for operating members is reduced when the seat rotates, reclines, or slides relative to the base. [Means for solving the problem]

[0006] As a first means for solving the above problems, the present invention provides a child car seat including a seat on which an infant sits, and a base that is attached to a vehicle seat and supports the seat so that the seat can rotate around an axis, recline to different inclination angles, and slide to move the seat linearly, a protrusion that is biased to protrude from the underside of the seat toward the recess of the base and engages with the seat to fix it to the base; a plurality of operating members connected to the protrusions and operable to reduce the protrusion amounts of the protrusions from the seat bottom surface by operating them in a direction opposite to the biasing force; When any one of the plurality of operating members is operated, the amount of protrusion of the convex portion from the underside of the seat decreases, and the seat can perform any one of the operations of rotating, reclining, and sliding. 、 The seat is provided with a bridge connected to the protrusion with a pin, and the plurality of operating members are connected to both ends of the bridge via connecting members, and the protrusion and the bridge are slidable together in the up and down direction below the seat. To provide a child seat characterized by the above. According to the first means, when the seat on which the baby sits rotates, reclines, or slides relative to the base attached to the vehicle seat, the same action can be achieved by operating any one of the multiple operating members. In addition, any one of the multiple operating members is located close to the operator, making it easy to operate. Moreover, the same operation can be performed by operating any one of the plurality of operating members.

[0007] As a second means for solving the above problems, the present invention provides a child car seat including a seat on which an infant sits, and a base that is attached to a vehicle seat and supports the seat so that the seat can rotate around an axis, recline to different inclination angles, and slide to move the seat linearly, a protrusion that is biased to protrude from the underside of the seat toward the recess of the base and engages with the seat to fix it to the base; a plurality of operating members connected to the protrusions and operable to reduce the protrusion amounts of the protrusions from the seat bottom surface by operating them in a direction opposite to the biasing force; When all of the plurality of operating members are operated, the protrusion amount of the convex portion from the underside of the seat changes from a maximum value to zero, and the seat can perform one of two operations: rotation, reclining, and sliding; Even if any one of the plurality of operating members is operated, the protrusion amount of the convex portion from the underside of the seat decreases from a maximum value to 0, and the seat can perform the other of two of the operations of rotation, reclining, and sliding. 、 The seat is provided with a bridge connected to the protrusion with a pin, and the plurality of operating members are connected to both ends of the bridge via connecting members, and the protrusion and the bridge are slidable together in the up and down direction below the seat. To provide a child seat characterized by the above.

[0008] According to the second means, when the seat on which the infant sits performs any two of the following actions relative to the base attached to the vehicle seat - rotation, reclining, or sliding - the same action can be achieved by operating any one of the multiple operating members. Furthermore, any one of the multiple operating members is located close to the operator, making it easy to operate. Furthermore, when the seat on which the infant sits performs any two of the following actions relative to the base - rotation, reclining, or sliding - the seat can be operated using only the multiple operating members, thereby reducing the number of parts. Moreover, the same operation can be performed by operating any one of the plurality of operating members.

[0010] The present invention is a first method for solving the above problems. 3 As a means of 1 or 2The object of the present invention is to provide a child car seat characterized in that the protrusion is pin-connected at a position offset from the center of the bridge in the longitudinal direction. The above item 3 According to this means, the protruding amount of the convex portion varies when any one of the plurality of operating members is operated (operated with one hand), and different seat operations can be performed when operated with one hand.

[0011] The present invention is a first method for solving the above problems. 4 As a means of 3 The object of the present invention is to provide a child seat characterized in that, in any one of the above means, the rotation structure of the seat comprises a disk on the underside of the seat and a protrusion protruding from the disk, and a disk recess on the upper surface of the base into which the disk fits, and one or more recesses into which the protrusion fits. The above item 4 According to this means, the seat can be rotated and fixed in a position facing forward (front) or backward (rear), for example.

[0012] The present invention is a first method for solving the above problems. 5 As a means of 3 The object of the present invention is to provide a child seat characterized in that, in any one of the above means, the reclining structure of the seat comprises a curved member on the underside of the seat and a convex portion protruding from the curved member, a curved recess on the upper surface of the base into which the curved member fits, and one or more recesses on the bottom surface of the curved member into which the convex portion fits. The above item 5 According to the means (1), the seat can be reclined and fixed at a position at a predetermined inclination angle.

[0013] The present invention is a first method for solving the above problems. 6 As a means of 3The object of the present invention is to provide a child seat characterized in that, in any one of the above means, the sliding structure of the seat comprises a rectangular member on the underside of the seat and the convex portion protruding from the rectangular member, a rectangular recess on the upper surface of the base into which the rectangular member fits, and one or more recesses on the bottom surface of the rectangular member into which the convex portion fits. The above item 6 According to the means (1), the seat can be slid and fixed at a predetermined position in the left-right direction.

[0014] The present invention is a first method for solving the above problems. 7 As a means of 4 The object of the present invention is to provide a child seat characterized in that the disk, curved member or rectangular member on the underside of the seat has a seat-side flange along the edge of the bottom surface, and the disk recess, curved recess or rectangular recess on the upper surface of the base has a base-side flange that fits into the seat-side flange along the edge of the upper surface opening. The above item 7 According to the above means, the seat can be prevented from coming off the base when the seat is rotated, reclined or slid. [Effects of the Invention]

[0015] According to the present invention, when the seat rotates, reclines, or slides relative to the base, the same operation can be performed by operating any one of multiple operating members. Furthermore, any one of the multiple operating members is located close to the operator, improving operability, and multiple seat operations can be achieved while reducing the number of operating member parts. Furthermore, when multiple operating members are operated with both (both hands), different operations can be achieved than when one of the operating members is operated with one (one hand). [Brief explanation of the drawings]

[0016] [Figure 1] 10A and 10B are explanatory diagrams illustrating the operation of two operating members when they are not operated. [Figure 2] 10 is an explanatory diagram of the operation when one of the two operating members is operated. FIG. [Figure 3]10 is an explanatory view of the operation when the other of the two operating members is operated. FIG. [Figure 4] 10 is an explanatory diagram of the operation when both of the two operating members are operated. FIG. [Figure 5] 10 is a table showing the correspondence between one-handed operation and two-handed operation of two operating members. [Figure 6] FIG. 1 is an exploded perspective view of a rotating child seat. [Figure 7] This is a perspective view of the base (with one recess) of a child car seat that rotates. [Figure 8] FIG. 2 is a perspective view of a rotating child car seat facing forward. [Figure 9] FIG. 2 is a side cross-sectional view of a rotating child car seat facing the front of the seat. [Figure 10] FIG. 2 is a perspective view of a rotating child car seat facing the rear of the seat. [Figure 11] FIG. 1 is a side cross-sectional view of a rotating child car seat facing the rear of the seat. [Figure 12] FIG. 1 is an exploded perspective view of a child car seat that reclines. [Figure 13] This is a perspective view of the base (with one recess) of a child car seat that reclines. [Figure 14] FIG. 1 is a perspective view of a child car seat performing a reclining operation, as seen from the rear side. [Figure 15] FIG. 2 is a perspective view of a reclining child car seat facing the front. [Figure 16] FIG. 2 is a side cross-sectional view of a reclining child car seat facing the front of the seat. [Figure 17] 1 is a perspective view of a child car seat that can be reclined, the child car seat having been moved from a fixed position to a reclining position. [Figure 18] 1 is a side cross-sectional view of a child car seat that is reclining and has been moved from a fixed position to a reclining position. [Figure 19] FIG. 2 is an exploded perspective view of a sliding child car seat. [Figure 20]This is a perspective view of the base (with one recess) of a child car seat that slides. [Figure 21] FIG. 10 is a perspective view of a fixed position of a sliding child car seat. [Figure 22] FIG. 10 is a front cross-sectional view of a sliding child car seat at a fixed position. [Figure 23] FIG. 10 is a perspective view of a sliding child car seat slid from a fixed position. [Figure 24] FIG. 10 is a front cross-sectional view of a sliding child car seat slid from a fixed position. [Figure 25] FIG. 1 is an exploded perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members. [Figure 26] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members when not in operation. [Figure 27] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members when not in operation. [Figure 28] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members when not in operation. [Figure 29] This is a perspective view of the fixed position of the base of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members. [Figure 30] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 31] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 32] FIG. 1 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 33] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 34]FIG. 1 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 35] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 36] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 37] FIG. 1 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 38] This is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when sliding with both hands. [Figure 39] This is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when sliding with both hands. [Figure 40] FIG. 1 is an exploded perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members. [Figure 41] This is a perspective view of a child car seat facing the back of the seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members. [Figure 42] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members when not in operation. [Figure 43] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members when not in operation. [Figure 44] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with one hand. [Figure 45] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with one hand. [Figure 46]FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with both hands. [Figure 47] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with both hands. [Figure 48] FIG. 1 is an exploded perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members. [Figure 49] This is a perspective view of a child car seat facing the front, which can be operated with one hand (reclining) and two hands (sliding) using two operating members. [Figure 50] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (reclining) or two hands (sliding) using two operating members when not in operation. [Figure 51] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members when not in operation. [Figure 52] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 53] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 54] This is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 55] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 56] FIG. 1 is an exploded perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members. [Figure 57] This is a perspective view of a child car seat facing the front that can be operated with one hand (recline) and two hands (rotate) using two operating members. [Figure 58]FIG. 1 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when not in operation. [Figure 59] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when not in operation. [Figure 60] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members, when operated with one hand. [Figure 61] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (rotation) using two operating members, when operated with one hand. [Figure 62] This is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members, when operated with both hands. [Figure 63] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members. [Figure 64] FIG. 1 is an exploded perspective view of a child car seat that can be operated with one hand (slide) and with both hands (rotate) using two operating members. [Figure 65] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (slide) and with both hands (rotate) using two operating members when not in operation. [Figure 66] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (slide) and with both hands (rotate) using two operating members when not in operation. [Figure 67] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 68] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with one hand. [Figure 69] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 70] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (sliding) using two operating members, when operated with both hands. [Figure 71] FIG. 1 is an exploded perspective view of a child car seat that can be operated with one hand (sliding) and with both hands (reclining) using two operating members. [Figure 72] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (sliding) or with both hands (reclining) using two operating members when not in operation. [Figure 73] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when not in operation. [Figure 74] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (sliding) or with both hands (reclining) using two operating members, when operated with one hand. [Figure 75] FIG. 1 is a front cross-sectional view of a child car seat that can be operated with one hand (sliding) and with both hands (reclining) using two operating members, when operated with one hand. [Figure 76] FIG. 1 is a perspective view of a child car seat that can be operated with one hand (sliding) or with both hands (reclining) using two operating members, when operated with both hands. [Figure 77] FIG. 1 is a side cross-sectional view of a child car seat that can be operated with one hand (sliding) and with both hands (reclining) using two operating members, when operated with both hands. [Figure 78] 10A and 10B are explanatory diagrams illustrating the operation of two operation members of a modified example when they are not operated. [Figure 79] 10A and 10B are explanatory views of the operation when one of the two operating members of the modified example is operated. [Figure 80] 10A and 10B are explanatory views of the operation when the other of the two operating members of the modified example is operated. [Figure 81] 10A and 10B are explanatory views of the operation when two operating members of the modified example are both operated. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of a child car seat of the present invention will be described in detail below with reference to the drawings. In this embodiment, the front-rear direction (front and rear) refers to the front and rear directions of the vehicle, and the left-right direction refers to the direction toward the door of the vehicle. The child seat 10 of the present invention comprises a seat 12 on which an infant sits, and a base 14 that is attached to a vehicle seat and supports the seat 12 to enable one or more of the following movements: rotation around a central axis at an origin position, reclining to tilt the seat 12 to different inclination angles from the origin position, and sliding to move linearly from the origin position of the seat 12 in left and right directions, etc.

[0018] [Basic structure of the operating member] Fig. 1 is an explanatory diagram of the operation when the two operation members are not operated. Fig. 2 is an explanatory diagram of the operation when one of the two operation members is operated. Fig. 3 is an explanatory diagram of the operation when the other of the two operation members is operated. Fig. 4 is an explanatory diagram of the operation when both of the two operation members are operated. The child car seat 10 of the present invention includes a protrusion 20 that is biased to protrude from the underside of the seat 12 toward a recess in the base 14 and engages with the protrusion 20 to fix the seat 12 to the base 14; The seat 12 has a plurality of operating members 30 that are connected to the protrusions 20 and can be operated in the opposite direction to the biasing force to reduce the amount of protrusion of the protrusions 20 from the underside of the seat 12. In this embodiment, as an example, a configuration with two operating members 30 will be described below. However, the number of operating members is not limited to this, and may be two or more. The protrusion 20 is connected to the bridge 22 by a pin. The protrusion 20 shown in FIG. 1-4 is rotatably connected to the center of the rod-shaped bridge 22. Both ends of the bridge 22 are connected to a wire 32, which serves as a connecting member for connecting to the operating member 30. Note that the connecting member is not limited to a wire; various cord-like bodies (such as strings) can also be used. Two biasing means 24 are provided on the bridge 22 between the protrusion 20, which is connected to the bridge 22 by a pin, and the wire 32 connected to the bridge 22. The biasing means 24 shown in FIG. 1-4 use compression springs. The protrusion 20, bridge 22, and biasing means 24 are all located within a casing below the seat 12. The protrusion 20 and bridge 22 are integrally attached to a long hole that allows them to slide vertically. The biasing means 24 biases the bridge 22 downward. When the operating member 30 is not operated, the protrusion 20 is in a state where it protrudes at its maximum (maximum size) from the opening 26 provided in the lower surface of the seat 12 (see FIG. 1).

[0019] In this embodiment, the operating member 30 connected to the wire 32 is in the form of an operating lever. By operating the lever, the wire 32 is pulled up, and a force in the opposite direction acts on the bridge 22, pushing up the bridge 22. In conjunction with the bridge 22 being pushed up, the pin-connected protrusion 20 is also pushed up. The protrusions 20 shown in FIGS. 2 and 3 are connected by a pin at the center of the bridge 22, so the retraction amounts of the two operating members 30 are the same, and regardless of which of the two operating members 30 is operated (with one hand), the amount of protrusion from the underside of the seat 12 is reduced to half, in other words, the amount of protrusion is between the maximum value and zero, as described below.

[0020] When two operating members 30 are operated (two-handed operation), the bridge 22 and the protrusion 20 are pushed up in the opposite direction to the biasing force, and the protrusion amount of the protrusion 20 is reduced compared to when the operation is performed with one hand. The protrusion amount of the protrusion 20 from the underside of the seat 12 is set to 0 when the operation is performed with both hands (see Figure 4). Figure 5 is a table showing the correspondence between one-handed and two-handed operation of two operating members. The seat operations that can be realized by one-handed operation and two-handed operation using two operating members are the combinations shown in Figure 5. The seat 12 can be rotated, reclined, and slid by one-handed operation, in other words, by operating either of the two operating members 30, and the seat 12 can be rotated, reclined, and slid by two-handed operation, in other words, by operating both of the two operating members, with six possible combinations (circles in the table).

[0021] [Example of one-handed operation] A child car seat 10 in which the seat 12 can rotate, recline, or slide by operating either of two operating members (one-handed operation) will be described below. (rotate) FIG. 6 is an exploded perspective view of a rotatable child car seat. FIG. 7 is a perspective view of the base (with one recess) of a rotatable child car seat. FIG. 8 is a perspective view of a rotatable child car seat facing the front of the seat. FIG. 9 is a side cross-sectional view of a rotatable child car seat facing the front of the seat. FIG. 10 is a perspective view of a rotatable child car seat facing the rear of the seat. FIG. 11 is a side cross-sectional view of a rotatable child car seat facing the rear of the seat. The rotation structure includes a disk 40, a flanged rotating shaft 42, and a protrusion 20 protruding from the disk 40 on the underside of the seat 12, a disk recess 50 into which the disk 40 fits, and a recess 52 on the bottom of the disk recess 50 into which the protrusion 20 fits, and a shaft hole 54 into which the flanged rotating shaft fits. In this embodiment, the seat 12 cannot be removed from the base 14 by setting the diameter of part of the shaft hole 54 into which the flanged rotating shaft 42 fits smaller than the flange diameter, and by using a different assembly method and flange as a separate part (separate structure). Two operating levers serving as operating members 30 are arranged on the left and right sides of the seat 12. One or more recesses 52 into which the protrusions 20 fit are provided at positions where the seat 12 faces forward and backward (see Figure 6, there are two recesses 52). It is sufficient to provide only one recess 52 (for example, at a position where the seat 12 faces forward) (see Figure 7). The two operating members 30 and protrusions 20 employ the configuration shown in Figures 1-4. In a child car seat 10 configured in this way, by operating either of the two left and right operating members 30, the seat 12 can be rotated and fixed in any position, for example, in this embodiment, in a position facing forward (front) or backward (rear).

[0022] (reclining) FIG. 12 is an exploded perspective view of a child car seat with a reclining action. FIG. 13 is a perspective view of the base (with one recess) of a child car seat with a reclining action. FIG. 14 is a perspective view of a child car seat with a reclining action seen from the rear side. FIG. 15 is a perspective view of a child car seat with a reclining action facing the front of the seat. FIG. 16 is a side cross-sectional view of a child car seat with a reclining action facing the front of the seat. FIG. 17 is a perspective view of a child car seat with a reclining action moved from a fixed position to a reclining position. FIG. 18 is a side cross-sectional view of a child car seat with a reclining action moved from a fixed position to a reclining position. The reclining structure includes a flanged curved member 60 on the underside of the seat 12 and a protrusion 20 protruding from the flanged curved member 60, a flanged curved recess 70 on the upper surface of the base 14 into which the flanged curved member 60 fits, and one or more recesses 72 on the bottom of the flanged curved recess 70 into which the protrusion 20 fits. The base 14 is provided with one or more (three in Figures 12, 14-18) recesses 72 into which the protrusions 20 fit, arranged linearly in the front-to-rear direction. Only one recess 72 (for example, at the fixed position of the seat 12) is required (see Figure 13). Two operating levers serving as operating members 30 are disposed in front of the seat and on the upper back of the seat 12. The two operating members 30 and the protrusions 20 are configured as shown in Figures 1-4. The flanged curved member 60 and the flanged curved recess 70 are configured so that they cannot come off (the seat 12 cannot be detached from the base 14) due to the flange fitting structure. A child car seat 10 configured in this way can recline the seat 12 and fix it at a predetermined tilt angle by operating either of the two operating members 30.

[0023] (slide) FIG. 19 is an exploded perspective view of a sliding child car seat. FIG. 20 is a perspective view of the base (with one recess) of a sliding child car seat. FIG. 21 is a perspective view of the fixed position of the sliding child car seat. FIG. 22 is a front cross-sectional view of the fixed position of the sliding child car seat. FIG. 23 is a perspective view of the sliding child car seat after it has slid from its fixed position. FIG. 24 is a front cross-sectional view of the sliding child car seat after it has slid from its fixed position. The sliding structure comprises a flanged rectangular member 80 on the underside of the seat 12 and a protrusion 20 protruding from the flanged rectangular member 80, and a flanged rectangular recess 90 on the top surface of the base 14 into which the flanged rectangular member 80 fits, and one or more recesses 92 on the bottom surface of the flanged rectangular recess 90 into which the protrusion 20 fits. One or more recesses 92 into which the protrusion 20 fits are provided linearly in the left-right direction of the base 14 (three in FIGS. 19, 21-24). Note that it is sufficient to provide only one recess 92 (for example, at the fixed position of the seat 12) (see Figure 20). The flanged rectangular member 80 and the flanged rectangular recess 90 are configured so that they cannot come loose (the seat 12 cannot be attached or detached from the base 14) due to the flange fitting structure. Two operating levers serving as operating members 30 are arranged on the left and right sides of the seat 12. The two operating members 30 and the protrusion 20 are configured as shown in Figures 1-4. A child seat 10 configured in this manner can slide the seat 12 and fix it in a predetermined lateral position by operating either of the two left and right operating members 30. Furthermore, if there is only one recess 92 at the fixed position, when the seat 12 slides out of the fixed position, the recess 92 is not present and the seat 12 is not fixed. In this state, even if the seat 12 hits the vehicle door when it is closed, the seat 12 can slide easily, preventing damage to the seat 12.

[0024] [Examples of one-handed and two-handed operation] A child car seat 10 in which the first movement of the seat 12 can be performed by operating the operating member 30 with one hand and the second movement of the seat 12 can be performed by operating the operating member 30 with both hands will be described below. (Rotate-Slide) FIG. 25 is an exploded perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members. FIG. 26 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when not in operation. FIG. 27 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when not in operation. FIG. 28 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when not in operation. FIG. 29 is a perspective view of the fixed position of the base of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when not in operation. FIG. 30 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when operated with one hand. FIG. 31 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when operated with one hand. FIG. 32 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when operated with one hand. FIG. 33 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when rotated. FIG. 34 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when rotated. FIG. 35 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when operated with both hands. FIG. 36 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when operated with both hands. FIG. 37 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when operated with both hands. FIG. 38 is a front cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (slide) using two operating members when slid with both hands. 39 is a perspective view of the base of a child car seat that can be operated with one hand (rotation) or both hands (sliding) using two operating members, when sliding with both hands. The underside of the seat 12 is provided with a flanged disk 40A, and a protrusion 20 and a T-shaped member 28 protruding from the flanged disk 40A. The upper surface of the base 14 is provided with a rectangular recess 90 into which the flanged disk 40A fits, and the bottom surface of the rectangular recess 90 is provided with one or more T-shaped recesses 94 into which the protrusion 20 and the T-shaped member 28 fit.One or more T-shaped recesses 94 are formed horizontally (three in Figure 22, one in other cases). The rectangular recess 90 has a flange 91 on the upper edge to prevent the flanged disk 40A from slipping out (the seat 12 cannot be attached or detached from the base 14). The T-shaped member 28 is formed along the front-to-rear direction of the seat 12. Two operating levers that serve as operating members 30 are arranged on the left and right sides of the seat 12. The two operating members 30, the protrusion 20, and the T-shaped member 28 are configured as shown in Figures 1-4. The protrusion 20 is formed to protrude beyond the top surface of the T-shaped member 28, and when the operating member 30 is not operated, the protrusion 20 and the T-shaped member 28 fit into the middle T-shaped recess 94 of the multiple protrusions, thereby fixing the seat 12 to the base 14 (fixed position, see Figures 26-29). In one-handed operation, the protrusion amounts of the convex portion 20 and the T-shaped member 28 decrease, causing the T-shaped member 28 to come out of the T-shaped recess 94, with only the convex portion 20 fitting into the T-shaped recess 94 (see Figures 30-32). In two-handed operation, the protrusion amounts of the convex portion 20 and the T-shaped member 28 decrease even further, causing the convex portion 20 to also come out of the T-shaped recess 94 (see Figures 35-37). With a child car seat configured in this way, the seat 12 can be rotated and fixed in any position, for example, facing forward (front) or backward (rear) by operating either of the operating members (with one hand). Also, by operating with both hands, the seat 12 can be slid and fixed in a predetermined position in the left-right direction.

[0025] (Rotating-Reclining) FIG. 40 is an exploded perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members. FIG. 41 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, facing the back of the seat. FIG. 42 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when not in operation. FIG. 43 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when not in operation. FIG. 44 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with one hand. FIG. 45 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with one hand. FIG. 46 is a perspective view of a child car seat that can be operated with one hand (rotation) and with both hands (reclining) using two operating members, when operated with both hands. Figure 47 is a side cross-sectional view of a child car seat that can be operated with one hand (rotation) and two hands (reclining) using two operating members, when operated with both hands. The underside of the seat 12 is provided with a curved disk 100, a protrusion 20 protruding from the curved disk 100, a T-shaped member 28, and a flanged rotating shaft 42. The upper surface of the base 14 is provided with a curved disk recess 110 into which the curved disk 100 fits, and the bottom surface of the curved disk recess 110 is provided with one or more T-shaped shaft holes 112 into which the protrusion 20, T-shaped member 28, and flanged rotating shaft 42 fit. Some of the T-shaped shaft holes 112 into which the flanged rotating shaft 42 fits are configured with a hole diameter smaller than the flange diameter to prevent the flanged rotating shaft from slipping out (the seat 12 cannot be attached or detached from the base 14). One or more protrusions 20 and T-shaped shaft holes 112 into which the flanged rotating shaft 42 fits are provided linearly in the front-to-rear direction of the base 14 (three in Figures 40-47). Two operating levers serving as operating members 30 are arranged in front of the seat and on the upper back of the seat 12. The T-shaped member 28 is formed along the front-to-rear direction of the seat 12. The two operating members 30, the protrusion 20, and the T-shaped member 28 have the configuration shown in Figures 1-4. Note that the flanged rotating shaft 42 is fixed to the seat 12 and is not moved up and down by the operating members; it is the protrusion 20 and the T-shaped member 28 that move up and down.In the child car seat 10 configured as described above, by operating either of the two operating members 30, the seat 12 can be rotated with the T-shaped member 28 disengaged from the T-shaped pivot hole 112 and the protrusion 20 engaged, and fixed in any position, for example, facing forward (front) or backward (rear) (see Figures 44 and 45). Also, by operating both hands, the T-shaped member 28 and the protrusion 20 can be disengaged from the T-shaped pivot hole 112, allowing the seat 12 to be reclined and fixed at a predetermined angle (see Figures 46 and 47).

[0026] (Reclining-slide) Fig. 48 is an exploded perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members. Fig. 49 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, viewed from the front of the seat. Fig. 50 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when not in operation. Fig. 51 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when not in operation. Fig. 52 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with one hand. Fig. 53 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with one hand. Fig. 54 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (sliding) using two operating members, when operated with both hands. Figure 55 is a front cross-sectional view of a child car seat that can be operated with one hand (reclining) and two hands (sliding) using two operating members, when operated with both hands. The underside of the seat 12 is provided with a flanged curved rectangular member 120 and a protrusion 20 protruding from the flanged curved rectangular member 120. The upper surface of the base 14 is provided with a flanged curved rectangular recess 130 into which the flanged curved rectangular member 120 fits, and the bottom surface of the flanged curved rectangular recess 130 is provided with one or more recesses 132 and I-shaped recesses 134 into which the protrusion 20 fits. One or more recesses 132 into which the protrusion 20 fits are provided in a linear arrangement in the left-right direction of the base 14 (three in Figures 48-55). In addition, the I-shaped recesses 134 into which the protrusion 20 fits are provided in a linear arrangement in the front-rear direction of the base 14 (three in Figures 48-55). The flanged curved rectangular member 120 and the flanged curved rectangular recess 130 are configured so that they cannot come loose (the seat 12 cannot be attached or detached from the base 14) due to the flange fitting structure. With a child car seat 10 configured in this way, the seat 12 can be reclined and fixed at a predetermined inclination angle by operating either of the two operating members 30. The seat 12 can also be slid with both hands and fixed at a predetermined slid position in the left-right direction.

[0027] (recline-swivel) Figure 56 is an exploded perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members. Figure 57 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members, viewed from the front of the seat. Figure 58 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when not in operation. Figure 59 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when not in operation. Figure 60 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when operated with one hand. Figure 61 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when operated with one hand. Figure 62 is a perspective view of a child car seat that can be operated with one hand (reclining) and with both hands (rotating) using two operating members when operated with both hands. FIG. 63 is a side cross-sectional view of a child car seat that can be operated with one hand (reclining) and with both hands (rotation) using two operating members, when operated with both hands. The child car seat shown in Figures 56-62 has almost the same configuration as the child car seat shown in Figures 40-47. In a child car seat 10 configured as described above, when either of the two operating members 30 is operated, the T-shaped member 28 disengages from the T-shaped pivot hole 112 and the protrusion 20 engages, allowing the seat 12 to be reclined and fixed at a predetermined angle (see Figures 60 and 61). Also, by operating both hands, the T-shaped member 28 and the protrusion 20 disengage from the T-shaped pivot hole 112, allowing the seat 12 to be rotated and fixed in any position, for example, facing forward (front) or backward (rear) (see Figures 62 and 63). In this way, when multiple operating members are operated with both hands, different operations can be achieved than when one of the operating members is operated with one hand.

[0028] (slide-rotate) Figure 64 is an exploded perspective view of a child car seat that can be operated with one hand (slide) and with both hands (rotate) using two operating members. Figure 65 is a perspective view of a child car seat that can be operated with one hand (slide) and with both hands (rotate) using two operating members when not in operation. Figure 66 is a side cross-sectional view of a child car seat that can be operated with one hand (slide) and with both hands (rotate) using two operating members when not in operation. Figure 67 is a perspective view of a child car seat that can be operated with one hand (rotate) and with both hands (slide) using two operating members when operated with one hand. Figure 68 is a front cross-sectional view of a child car seat that can be operated with one hand (rotate) and with both hands (slide) using two operating members when operated with one hand. Figure 69 is a perspective view of a child car seat that can be operated with one hand (rotate) and with both hands (slide) using two operating members when operated with both hands. Figure 70 is a front cross-sectional view of a child car seat that can be operated with one hand (rotate) and with both hands (slide) using two operating members when operated with both hands. The child car seat shown in Figures 64-70 is almost the same as the child car seat shown in Figures 25-39, but differs in the configuration of the T-shaped member 28A and the T-shaped recess 94A. The T-shaped member 28A is formed along the left-right direction of the seat. In a child car seat 10 configured as described above, the seat 12 can be slid and fixed in a predetermined position in the left-right direction by operating either of the operating members 30 (operating with one hand). Furthermore, by operating with both hands, the seat 12 can be rotated and fixed in any position, for example, facing forward (front) or backward (rear). Furthermore, when multiple operating members are operated with both hands (both hands), different operations can be achieved than when one operating member is operated with one hand (one hand).

[0029] (slide-recline) Figure 71 is an exploded perspective view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members. Figure 72 is a perspective view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when not in operation. Figure 73 is a front sectional view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when not in operation. Figure 74 is a perspective view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when operated with one hand. Figure 75 is a front sectional view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when operated with one hand. Figure 76 is a perspective view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when operated with both hands. Figure 77 is a side sectional view of a child car seat that can be operated with one hand (slide) and with both hands (recline) using two operating members when operated with both hands. 71-77 is almost the same as the child car seat shown in Figures 48-55, but differs in the configuration of the I-shaped recess 134A. The base 14 has one or more I-shaped recesses 134A (three in Figures 71-77) that fit the protrusions 20, arranged linearly in the left-right direction. In a child car seat 10 configured as described above, the seat 12 can be slid and fixed in a predetermined position in the left-right direction by operating either of the two operating members 30. The seat 12 can also be reclined and fixed at a predetermined angle by operating both hands. Furthermore, when both (both hands) of the multiple operating members are operated, different operations can be realized than when only one (one hand) of the operating members is operated.

[0030] [Modification of the operation member] (offset) Fig. 78 is an explanatory diagram of the operation of the two operating members of the modified example when they are not operated. Fig. 79 is an explanatory diagram of the operation when one of the two operating members of the modified example is operated. Fig. 80 is an explanatory diagram of the operation when the other of the two operating members of the modified example is operated. Fig. 81 is an explanatory diagram of the operation when both of the two operating members of the modified example are operated. In this embodiment, the convex portion 20 is pin-connected at an offset position in a ratio of 1:2 in the longitudinal direction of the bridge 22, as an example. The two operating members 30 (lever A and lever B) are arranged with lever B on the 1 side of the ratio and lever A on the 2 side of the ratio. When the two operating members 30 are not operated, the protrusions 20 are in a state where they protrude at the maximum (maximum size) from the openings 26 provided in the lower surface of the seat 12 (see FIG. 78). When the two operating members 30 are operated (operated with both hands), the bridge 22 and the convex portion 20 are pushed up in the opposite direction of the biasing force, and the amount of protrusion of the convex portion 20 from the underside of the seat 12 is set to 0 (see Figure 81). When the two operating members 30 are operated with one hand, the convex portion 20 is pin-connected to the bridge 22 at an offset position, so the amount of retraction via the wire 32 is the same when levers A and B are operated. However, because the distance between the pin connection position of the convex portion 20 and the connection positions of the wire 32 of levers A and B is different, the amount of protrusion of the convex portion 20 when lever B is operated, which is closer to the pin connection position, is less than the amount of protrusion of the convex portion 20 when lever A, which is farther from the pin connection position, is operated. For this reason, the amount of reduction of the convex portion 20 differs between one-handed operation with lever A and one-handed operation with lever B, resulting in a difference in the amount of protrusion (see Figures 79 and 80).

[0031] According to the present invention, when the seat rotates, reclines, or slides relative to the base, the same operation can be performed regardless of which of the two operating members is operated. Furthermore, one of the two operating members is located close to the operator, improving operability, and multiple seat operations can be achieved while reducing the number of operating member parts. Furthermore, when multiple operating members are operated with both (both hands), different operations can be achieved than when one operating member is operated with one (one hand). Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and various modifications can be made without departing from the spirit and scope of the present invention. Furthermore, the present invention is not limited to the combinations shown in the embodiments, but can be implemented in various combinations. [Explanation of symbols]

[0032] 10 Child seats 12 sheets 14 base 20 Convex part 22 Bridge 24. Actuation means 26 Aperture 28,28A T-shaped member 30 Operating member 32 wire 40 Disc 40A flanged disc 42 Flanged rotating shaft 50 Disc recess 52 recess 54 Shaft hole 60 Flanged curved member 70 Flanged curved recess 72 recess 80 Flanged rectangular member 90 flanged rectangular recess 91 Flange 92 recess 94,94A T-shaped recess 100 curved disc 110 curved disc recess 112 T-shaped shaft hole 120 Flanged curved rectangular member 130 Flanged curved rectangular recess 132 recess 134,134AI recess

Claims

1. A child car seat including a seat on which an infant sits, and a base that is attached to a vehicle seat and supports the seat so that the seat can rotate around an axis, recline to different inclination angles, and slide to move the seat linearly, a protrusion that is biased to protrude from the underside of the seat toward the recess of the base and engages with the seat to fix it to the base; a plurality of operating members connected to the protrusions and operable to reduce the protrusion amounts of the protrusions from the seat bottom surface by operating them in a direction opposite to the biasing force; When any one of the plurality of operating members is operated, the protrusion amount of the convex portion from the underside of the seat decreases, and the seat can perform one of the operations of rotating, reclining, and sliding, A child seat characterized in that it has a bridge that is pin-connected to the convex portion, the multiple operating members are connected to both ends of the bridge via connecting members, and the convex portion and the bridge are capable of sliding integrally in the up and down direction below the seat.

2. A child car seat including a seat on which an infant sits, and a base that is attached to a vehicle seat and supports the seat so that the seat can rotate around an axis, recline to different inclination angles, and slide to move linearly, a protrusion that is biased to protrude from the underside of the seat toward the recess of the base and engages with the seat to fix it to the base; a plurality of operating members connected to the protrusions and operable to reduce the protrusion amounts of the protrusions from the seat bottom surface by operating them in a direction opposite to the biasing force; When all of the plurality of operating members are operated, the protrusion amount of the convex portion from the underside of the seat changes from a maximum value to zero, and the seat can perform one of two operations of rotation, reclining, and sliding, Even when any one of the plurality of operating members is operated, the protrusion amount of the convex portion from the underside of the seat decreases from a maximum value to 0, and the seat can perform the other of two of the operations of rotation, reclining, and sliding, A child seat characterized in that it has a bridge that is pin-connected to the convex portion, the multiple operating members are connected to both ends of the bridge via connecting members, and the convex portion and the bridge are capable of sliding integrally in the up and down direction below the seat.

3. The child car seat according to claim 1 or 2, A child seat characterized in that the protrusion is pin-connected at a position offset from the center of the bridge in the longitudinal direction.

4. 4. The child car seat according to claim 1, The rotation structure of the seat is characterized in that it comprises a disk on the underside of the seat and a protrusion protruding from the disk, and a disk recess on the upper surface of the base into which the disk fits, and one or more recesses into which the protrusion fits.

5. 4. The child car seat according to claim 1, The reclining structure of the seat is characterized in that it comprises a curved member on the underside of the seat and a convex portion protruding from the curved member, a curved recess on the upper surface of the base into which the curved member fits, and one or more recesses on the bottom surface of the curved member into which the convex portion fits.

6. 4. The child car seat according to claim 1, The sliding structure of the seat comprises a rectangular member on the underside of the seat and a protrusion protruding from the rectangular member, a rectangular recess on the upper surface of the base into which the rectangular member fits, and one or more recesses on the bottom surface of the rectangular member into which the protrusion fits.

Images