JP6510750B2 - Child seat for vehicle seat - Google Patents

Description

  The present invention relates to a child seat for a vehicle seat provided with a seat body on which a child is placed and a base body supporting the seat body.

  A child seat including a seat body for accommodating an infant and a base body for supporting the seat body, the base body being placed on a vehicle seat in a predetermined direction and firmly fixed to the vehicle seat by a seat belt provided on the vehicle There are many known as prior art. Among these, as a child seat which a sheet body can rotate with respect to a base body, for example, a thing described in JP, 2012-30625, A (patent documents 1) is conventionally known. According to the child seat described in Patent Document 1, since the sheet body can be changed to a desired direction in a use state in which the sheet body is connected to the base body, the usability is excellent.

  Alternatively, as another prior art, for example, the one described in JP-A-2004-359192 (Patent Document 2) is conventionally known. According to the child seat described in Patent Document 2, the seat body is removable from the base body. Therefore, by separating the seat body from the base body and placing only the base body on the seat of the vehicle, it becomes easy to fix the base body to the seat of the vehicle by the seat belt provided on the vehicle.

  A child seat disclosed in Japanese Patent Laid-Open No. 2004-504218 (Patent Document 3) is conventionally known as a child seat in which the seat body can be detached from the base body separately from the child seat described in Patent Document 2. The child seat described in Patent Document 3 includes a first vertical locking means which is a combination of a T-shaped engaging tool provided on a base body and an elongated hole (engaged portion) formed on a seat body, and a base body And a second vertical locking means which is a combination of the claws provided on the sheet and the projections formed on the sheet. The first and second vertical locking means allow attachment and detachment of the base body and the sheet body when the sheet body is turned sideways by -90 degrees or +90 degrees. On the other hand, the first and second vertical locking means restrict the sheet body from moving in the vertical direction with respect to the base body when the sheet body is turned 0 degrees forward.

JP 2012-30625 A JP 2004-359192 A JP 2004-504218 A

  The inventor found that there is a point to be further improved in the above-mentioned conventional child seat. First, in the child seat of Patent Document 1, the seat can not be removed from the base. Therefore, when the base body is fixed to the seat of the vehicle, the seat body becomes an obstacle, which causes inconvenience for the person who performs the fixing operation.

  Further, in the child seat of Patent Document 2, although the seat is removable, it can not be rotated in a state where the seat is connected to the base. For this reason, usability is bad and there is room for improvement.

  Further, in the child seat of Patent Document 3, the operation of attaching the seat to the base only involves an operation of rotating the seat from the sideways of -90 degrees or +90 degrees to the forward direction of 0 degrees. In addition, in the operation of removing the sheet from the base, it merely involves an operation of rotating the sheet from sideways 0 ° to −90 ° or + 90 °. In other words, the use state is limited to only 0 degree forward, and the sheet can not be rotated in the use state. Therefore, as in the case of the child seat of Patent Document 2, the usability is poor and there is room for improvement.

  Further, in the child seat of Patent Document 3, the seat body is not fixed to the base body in the lateral direction of ± 90 degrees, and the seat body becomes unstable in the lateral direction. For this reason, if the door of the vehicle is opened and the child is put on and off with the sheet body left at 90 degrees, the sheet body may come off from the base body and may fall over carelessly.

  In view of the above-described situation, the present invention is capable of rotating the sheet body in a desired direction in a use state in which the sheet body is connected to the base body, and attaching and detaching the sheet body to the base body. Aims to provide a child seat that can

For this purpose, a child seat for a vehicle seat according to the present invention is provided on a base body having a recess opening upward, a seat body rotatable about an axis extending vertically with respect to the base body, and a lower surface of the seat body. A base body having a sheet body base centered on the axis and received in the recess of the base body, and a recess opening upward, the base body receiving the sheet base in the recess, and the base body facing upward Selectively engaged in an engagement position for inseparably engaging with the base of the seat while permitting rotation of the seat while disengaging from the base of the seat. a base engaging member which is in, provided with rotation locking means provided outside the recess of the vertical direction being movable base member, outside the seat base part of the lower surface of the sheet body dose Comprising a locking recess locking means enters, and the connecting portion provided in the lock recess. The rotation lock means enters the lock recess of the sheet body to restrict the rotation of the sheet body, and is coupled to the coupled portion in the lock recess to hold the sheet body.

  According to the present invention, it is possible to rotate the sheet body in a desired direction in a use state in which the sheet body is connected to the base body, and furthermore, the sheet body can be attached to and detached from the base body. The seat can be attached and removed not only in the lateral direction of ± 90 degrees, but also in the forward direction of 0 degrees, and in any other direction. In addition, the sheet can be connected to the base at 90 degrees in the horizontal direction, and the sheet at 90 degrees in the horizontal direction does not come off from the base unless the operator performs the removal operation. Furthermore, there is no possibility that the engagement between the seat body and the base body is released carelessly, and the child can be safely put on and taken off with the sheet body oriented at 90 degrees.

In one embodiment of the present invention, the sheet body base is provided on the lower surface of the sheet body so as to be rotatable relative to each other, and the relative rotation is received in the recess . In another embodiment, the sheet body base is non-rotatably provided on the lower surface of the sheet body and is rotatably received in the recess .

As a preferred embodiment of the present invention, the sheet body base includes a polygonal plate disposed along the lower surface of the sheet body, and an engaged portion provided at an edge of the polygonal plate, and the recess of the base body The non-rotatably receiving the polygonal plate , the base engagement member approaches the edge of the polygonal plate in the engaged position to engage with the engaged portion, and the edge of the polygonal plate in the disengaged position Away from the part, the engagement with the engaged part is released. According to such an embodiment, since the polygonal plate is rotatably attached to the sheet and is non-rotatably received in the receiving recess, the sheet is connected to the base so as to be rotatable relative to the base. Can. The polygon plate may be, for example, a square, a rectangle, or a regular polygon having a regular pentagon or more.

Alternatively, as another embodiment of the present invention, the sheet base portion has a relatively large diameter lower plate disposed along the lower surface of the sheet, and a relatively small diameter connecting the lower surface of the sheet and the lower plate. And the recess rotatably receives the lower plate relative to the lower plate, and the base engagement member enters between the lower surface of the sheet and the lower plate in the engaged position, and with the lower surface of the sheet in the disengaged position. Detach from between the lower plate . According to such an embodiment, the lower plate is attached to the sheet non-rotatably and the recess rotatably received in the recess , so that the sheet can be coupled to the base relatively non-separably relative to the base. .

Or as yet another embodiment of the present invention, the sheet base part comprises a column part about the axis, the ear portion protruding radially outward from the lower end of the columnar portion, the recess pillar portion can rotate relative to The recess is formed in the recess to restrict axial movement of the ear, and the notch formed in the inward flange to allow axial movement of the ear Provided, the base engagement member may enter the notch in the engaged position and disengage from the notch in the disengaged position. According to the embodiment, since the cylindrical portion is attached to the sheet non-rotatably relative to the receiving recess and is rotatably received in the receiving recess, it is possible to connect the sheet relative to the base non-separably relative to the base. it can. In addition, the circumferential direction position of a notch is not specifically limited, For example, a notch is provided in two places of the front side of a base body, and a rear side. Alternatively, the notches are provided at a plurality of places at predetermined intervals around the axis.

  The circumferential position of the ear portion is not particularly limited. For example, the ear portion is provided at two places on the front side and the rear side of the seat body. Alternatively, the ear portions are provided at a plurality of places at predetermined intervals around the axis. As a preferred embodiment of the present invention, the circumferential position of the ear is arranged to coincide with the circumferential position of the notch when the sheet is turned sideways. According to this embodiment, when the sheet is turned to the side, the sheet is made attachable to and detachable from the base, and when the sheet is directed to the other direction, the sheet is connected inseparably to the base. be able to.

Further, according to the present invention , there is provided a rotation lock means movable in the vertical direction and provided outside the concave portion of the base body, and a lock provided outside the sheet base portion of the lower surface of the sheet body and the rotation lock means enters. A recess and a coupled portion provided in the lock recess. The rotation lock means enters the lock recess of the sheet body to restrict the rotation of the sheet body, and is coupled to the coupled portion in the lock recess to hold the sheet body. According to such an embodiment, the seat can be non-rotatably fixed when the operator of the child seat does not want to rotate the seat. Furthermore, the sheet can be more strongly connected to the base.

  As described above, according to the present invention, it is possible to rotate the sheet body in a desired direction in the use state in which the sheet body is connected to the base body, and even if the sheet body is oriented other than sideways The sheet body can be attached to and detached from the base body. In addition, the sheet can be fixed to the base with the sheet facing sideways. Furthermore, the risk of inadvertent release of the engagement between the seat body and the base body is eliminated, and the child can be safely put on and taken off with the seat body facing sideways. According to the present invention, not only the operation burden on the operator is reduced as compared with the conventional case, but also the safety is improved.

FIG. 1 is a perspective view showing a vehicle seat child seat body according to a first embodiment of the present invention. It is a perspective view of the embodiment. It is a perspective view of the embodiment. It is a perspective view which shows the state which removed the sheet | seat body from the base body of the embodiment. It is a perspective view which shows the state which removed the sheet | seat body from the base body of the embodiment. It is a disassembled perspective view which shows the sheet | seat body of the embodiment. It is a disassembled sectional view showing the sheet body of the embodiment. It is explanatory drawing which shows the engagement location of the sheet | seat body of the embodiment, and a base body. It is a perspective view which shows 2nd Embodiment of this invention. It is a perspective view which shows the state which removed the sheet | seat body from the base body of 2nd Embodiment. It is explanatory drawing which shows the state which removed the sheet | seat body from the base body of 2nd Embodiment. It is an expanded sectional view of the sheet | seat body base of 2nd Embodiment, and a receiving recessed part. It is sectional drawing which shows the state which attached the sheet | seat body to the base body of 2nd Embodiment. It is an expanded sectional view of FIG. It is a schematic explanatory drawing which shows the engagement position of the base engagement member of 2nd Embodiment, and is shown with the operation ring. It is a schematic explanatory drawing which shows the engagement position of the base engagement member of 2nd Embodiment. It is a schematic explanatory drawing which shows the engagement release position of the base engagement member of 2nd Embodiment, and is shown with the operation ring. It is a schematic explanatory drawing which shows the engagement release position of the base engagement member of 2nd Embodiment. It is a perspective view which shows 3rd Embodiment. It is a perspective view which shows the state which removed the sheet | seat body from the base body of 3rd Embodiment. It is explanatory drawing which makes the state which remove | eliminated the sheet | seat body from the base body of 3rd Embodiment a partial cross section, and shows attachment or detachment operation of a sheet | seat body. It is an expanded sectional view of a seat body base and a base body of a 3rd embodiment, and a base body is cut in a plane perpendicular to a child seat width direction, and the section is expressed. It is a side view which takes out and shows the sheet body of a 3rd embodiment. It is sectional drawing which shows the state which attached the sheet | seat body to the base body of 3rd Embodiment, It cut | disconnects in the plane orthogonal to the child seat width direction, and represents the cross section. It is an expanded sectional view of FIG. It is a schematic plan view which shows the engagement position of the base engagement member of 3rd Embodiment. It is explanatory drawing which shows the engagement release position of the base engagement member of 3rd Embodiment. It is a schematic diagram which shows the basic composition of this invention, Comprising: The connection state of a sheet | seat body and a base body is shown. It is a schematic diagram which shows the basic composition of this invention, Comprising: The sheet | seat body and the separated state of a base body are shown.

  Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The basic configuration of a child safety seat 40 according to the present invention is, as shown in the schematic view of FIG. 28, a seat body 11 for accommodating a child and a seat body base 50 provided on the lower surface of the seat body 11 centering on the rotation axis O. And a base body 21 having a receiving recess 22 for receiving the sheet body base 50 and supporting the sheet body 11, and a base engaging member 60 provided on the base body 21. The base engaging member 60 is a movable member, and as shown in FIG. 28, as shown in the schematic view of FIG. 29, an engagement position inseparably engaged with the sheet base 50 while allowing rotation of the sheet 11. In the disengagement position, the engagement with the seat base 50 is selectively released. The sheet body 11 connected to the base body 21 by the base engaging member 60 in the engaged position is rotatable as indicated by an arrow A about a rotational axis O extending in the vertical direction. When the base engagement member 60 is in the disengagement position, the sheet body 11 is removable from the base body 21 as shown by arrows B and C.

  The sheet base portion 50 may be attached to the lower surface 13 of the sheet 11 so as to be relatively rotatable and inseparable, and may be received by the base 21 so as to be relatively non-rotatable. Alternatively, the sheet body base 50 may be non-rotatably fixed to the lower surface 13 of the sheet 11 and may be rotatably received by the base 21. As a more detailed embodiment, the first to third embodiments will now be described.

  1 to 8 are perspective views showing a child seat for a vehicle seat according to a first embodiment of the present invention, wherein in FIG. 1 the seat is facing forward, in FIG. 2 the seat is transverse and in FIG. 3 The seat is turned backwards. 4, 5 and 8 show the state in which the sheet body and the base body are separated. 6 and 7 are exploded perspective views showing the sheet body. The vehicle seat child seat 10 according to the first embodiment includes a seat 11 for storing a child, a base 21 provided below the seat 11 to support the seat 11, and a leg provided below the base 21. A portion 31 and rotation lock means 41 for restricting the rotation of the sheet body 11 are provided.

  The seat body 11 has a seat supporting the buttocks of children aged 0 to 6 and 7 such as infants and toddlers, and a backrest supporting the back of the child, and the lower surface 13 directly below the seat and the back of the backrest The back surface 14 of the is formed in the shape of a basket which constitutes a continuous surface. A seat base 51 is provided on the lower surface 13 of the seat 11. The sheet body base 51 of the first embodiment is a plate-like square, and the center of the square coincides with the rotation axis O of the sheet 11. The sheet 11 and the sheet base 51 can rotate relative to each other about the rotation axis O.

  The seat body 11 and the seat body base 51 are as shown in FIGS. 6 and 7 and are connected inseparably by a retaining disc 15 disposed coaxially with the rotation axis O. A flat annular surface 13 b is formed at the center of the lower surface 13 of the sheet 11. A downwardly projecting cylindrical portion 12 is formed at the center of the annular surface 13 b, and the disc 15 is held by the lower end of the cylindrical portion 12 with the central hole 52 of the sheet body base 51 receiving the cylindrical portion 12. It is fixed by. The outer diameter of the retaining disc 15 is larger than the outer diameter of the cylindrical portion 12.

  The inner diameter of the central hole 52 is such that the upper central hole 52a is smaller in diameter than the lower central hole 52b. Thus, a downward annular step surface 52 c is formed on the inner periphery of the center hole 52. The inner diameter of the upper central hole 52a corresponds to the outer diameter of the cylindrical portion 12, the inner diameter of the lower central hole 52b corresponds to the outer diameter of the retaining disc 15, and the edge of the retaining disc 15 has an annular step surface 52c. Contacts the relative rotation freely. The seat body base 51 is held between the annular surface 13b and the retaining disc 15, and held so as not to be relatively movable in the rotational axis O direction.

  The base body 21 is mounted on the vehicle seat. For this reason, the bottom of the base body 21 is made flat. The leg 31 is located forward of the vehicle seat, attached to the front of the base body 21 and extends downward, and its lower end contacts the floor of the vehicle. At the rear of the base body 21 a connecting arm 33 for ISOFIX is provided. The connecting arms 33 are members which are provided on both sides in the width direction and which are adjustable in length extending rearward. The connecting arm 33 is detachably connected to a not-shown connected part on the vehicle seat side. The base body 21 may be configured to be fixed to the vehicle seat by a seat belt provided to the vehicle seat, instead of the connecting arm 33.

  The upper surface 23 of the base body 21 constitutes a concave spherical surface, and corresponds to the lower surface 13 of the sheet 11 constituting the convex spherical surface. In the central portion of the upper surface 23, a receiving recess 22 which is open upward and receives the sheet body base 51 is formed. The shape and size of the receiving recess 22 are made to be a square corresponding to the sheet base 51, and the receiving recess 22 receives the sheet base 51 in a relatively non-rotatable manner.

  Upwardly projecting base engagement blocks 61 are provided on the front and rear sides of the receiving recess 22 respectively. On the other hand, the engaged portions 62 are provided on the front side and the rear side of the sheet body base 51, respectively. The engaged portion 62 is a round bar extending in the horizontal direction as shown in FIG. 6 and is bridged in a recessed portion 63 formed at the central portion of the side of the sheet body base 51. A U-shaped depression opening upward is formed at the tip of the base engagement block 61, and the U-shaped tip of the base engagement block 61 enters the recess 63, and the round bar-like engaged portion 62 is formed. In the U-shaped recess. In the U-shaped recess of the distal end portion of the base engagement block 61, a burr 61b as a base engagement member is attached.

  The burr 61b is a movable member, which opens and closes the U-shaped recess at the tip of the base engagement block 61, but is biased in the closing direction by an elastic body (not shown) and is normally in the engaged position. An operation button 64 is provided on the front side of the base body 21. When the operation button 64 is pressed, the burr 61b is moved in the opening direction to be in the engagement release position. When the engaged portion 62 approaches the U-shaped recess at the end of the base engaging block 61, the engaged portion 62 pushes away the burr 61b and can enter the U-shaped recess at the end of the base engaging block 61. is there. However, when the engaged portion 62 is in the U-shaped recess at the end of the base engaging block 61, the engaged portion 62 itself can not push away the burr 61b, and the engaged portion 62 is U-shaped. Held in the hollow of the

  Thus, with the U-shaped recess at the tip of the base engaging block 61 receiving the round rod shaped engaged portion 62, the burr 61b closes the U-shaped recess at the tip of the base engaging block 61 (engagement And the rod-like engaged portion 62 is held by the base engaging block 61 and does not come off the base body 21. On the other hand, when the burr 61b opens a U-shaped depression at the end of the base engagement block 61 (engagement release position), the round bar-like engaged portion 62 forms a U-shaped depression at the end of the base engagement block 61 When the sheet 11 is moved in the vertical direction parallel to the rotation axis O as shown by arrows B to C (FIG. 5), the sheet base 51 can be received in the receiving recess 22 of the base 21. Enter or leave

  The operation of attaching the sheet body 11 to the base body 21 may be carried out only by placing the sheet body 11 on the base body 21 as shown by an arrow B in FIG. At this time, the base engagement block 61 enters into the recess 63, and the engaged portion 62 pushes the burr 61b to the disengagement position and fits into the U-shaped recess, and is engaged with the base engagement block 61 Engagement of portion 62 is complete. The mounting operation may be performed as long as the sheet body base 51 and the base body 21 have the same orientation, and the sheet body 11 may have any orientation of 360 degrees.

  The operation of removing the sheet body 11 from the base body 21 only needs to push the operation button 64 and lift the sheet body 11 from the base body 21 as shown by the arrow C in FIG. Such removal operation is possible regardless of whether the sheet 11 is in 360 degrees.

  According to the first embodiment, as shown in FIG. 8, the front side base engagement block 61 releasably engages with the engaged portion 62 on the front side of the sheet body base 51, and the rear side base engagement block The reference numeral 61 releasably engages with the engaged portion 62 on the rear side of the seat body base 51. As a result, the sheet body base 51 accommodated in the receiving recess 22 is firmly connected to the base body 21 at two front and rear sides. Moreover, even if the seat body base 51 is firmly connected to the base body 21 at two front and rear places, the seat body 11 is rotatable around the rotation axis O, and as shown by the arrow A in FIG. You can change the direction to the direction.

  Furthermore, according to the first embodiment, as shown in FIG. 4, the sheet 11 can be attached to and detached from the base 21 while facing forward, and as shown in FIG. The sheet 11 can be attached to and detached from the base body 21 with any orientation not shown.

  Therefore, the child seat of the first embodiment can attach and detach the seat body 11 at an arbitrary angle of 360 degrees. Further, since the base engagement block 61 is provided at two positions in the front and back, and the burr 61b is urged in the direction to close the U-shaped recess of the tip of the base engagement block 61, the seat 11 and the base 21 are engaged. There is no way to release it carelessly.

  The rotation lock means 41 is a pair of two members provided on the rear side of the base body 21 and disposed on both sides in the width direction. The rotation lock means 41 is a member movable in the vertical direction, and is operated by an operation lever 42 provided on the front side of the base body 21. On the other hand, connected portions 43a corresponding to the rotation lock means 41 are provided on the rear side of the sheet 11 and are disposed on both sides in the width direction.

  The to-be-connected portion 43a is a round bar extending in the horizontal direction as shown in FIG. 6, and is bridged in the concave portions 44a formed on both sides in the width direction of the sheet body 11. The pair of rotation locking means 41 enters the pair of recesses 44a at the coupling position, and is coupled to the round bar-like coupled portion 43a, and holds the sheet body 11 non-rotatably while facing forward (FIG. 1). Alternatively, the pair of rotation locking means 41 disengages from the pair of recesses 44 a at the connection release position to release the above-mentioned connection and allow the sheet 11 to rotate around the rotation axis O.

  Connected parts 43b corresponding to the rotation lock means 41 are further provided on the front side of the sheet 11, and are disposed on both sides in the width direction. The to-be-connected portion 43 b is also a round bar extending in the horizontal direction as shown in FIG. 6, and is bridged in the recess 44 b formed on both sides in the width direction of the sheet 11. The pair of rotation locking means 41 enters the pair of recesses 44b at the connection position and connects with the round bar-like connected portion 43b, and holds the sheet body 11 so as not to be able to rotate in the backward direction (FIG. 3). Alternatively, the pair of rotation locking means 41 disengages from the pair of recesses 44b at the connection release position to release the above-mentioned connection and allow the sheet 11 to rotate around the rotation axis O.

  According to the first embodiment, the sheet member 11 can be held forward or backward by the rotation lock means 41. The seat body 11 is firmly connected to the base body 21 by two pairs of rotational locking means 41 to secure safety during traveling.

  Next, a second embodiment of the present invention will be described. FIG. 9 is a perspective view showing a second embodiment. FIG. 10 is a perspective view showing a state in which the sheet body is removed from the base body, and FIG. 11 is an explanatory view showing a state in which the sheet body is removed from the base body in a partial cross section. Positioned. FIG. 12 is an enlarged cross-sectional view of the seat body base and the receiving recess, with the base engagement member in the disengaged position. FIG. 13 is a cross-sectional view showing the sheet body attached to the base body, and FIG. 14 is an enlarged view of FIG. 13. In FIGS. 13 and 14, the base engagement member is in the engaged position. 15 and 16 are schematic explanatory views showing the engagement position of the base engagement member, and FIGS. 17 and 18 are schematic explanatory views showing the disengagement position of the base engagement member. Is a plan view. In the second embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals and descriptions thereof will be omitted, and different components will be described below. In the child seat 20 according to the second embodiment, as shown in FIG. 10, the base body 21 is provided with the base engaging members 65 in a semicircular arc shape, and two pairs of base engaging members 65 disposed opposite to each other approach each other. Thus, the seat body base 53 is engaged.

  At a central portion of the flat annular surface 13b of the sheet 11, a sheet base 53 with the rotation axis O at the center is provided. The seat base 53 includes a lower disc 53a and a neck 53b. The lower disc 53 a has a relatively large diameter, and is disposed along the annular surface 13 b of the sheet 11. The neck portion 53 b has a relatively small diameter, and connects the annular surface 13 b of the sheet 11 and the lower disc 53 a. The sheet body base 53 is provided at the lower part of the sheet body 11 so as not to be relatively rotatable. The receiving recess 22 formed in the upper central portion of the upper surface of the base body 21 and opening upward receives the sheet base 53 (FIGS. 13 and 14). When the base engaging member 65 is moved to the engagement release position, the sheet 11 is moved in the vertical direction along the rotation axis O as shown by the arrows B to C (FIG. 10). The body base 53 enters or exits the receiving recess 22 of the base body 21.

  The semicircular arc shaped base engagement member 65 is disposed on the front side and the rear side of the base body 21 around the rotation axis O, and is held by the base body 21 so as to be movable in the front-rear direction. An annular operation ring 66 is disposed coaxially with the rotation axis O above the base engagement member 65. The operation ring 66 is rotatably held by the base body 21 about the rotation axis O. The operation knobs 66 b formed on the operation ring 66 and protruding in the outer diameter direction are disposed on both sides in the width direction of the base body 21 as shown in FIGS. 15 and 17. Two operation knobs 66b are provided at positions different by 180 degrees in the circumferential direction. As shown in FIGS. 15 to 18, two projections 66 c formed on the operation ring 66 and provided at different positions in the circumferential direction by 180 degrees are provided, and each of the projections 66 c is a base engagement member 65. It engages with the guide portion 65g formed on the

  The guide portion 65g is a linear groove or elongated hole formed in the central portion of the base engagement member 65, and extends at an angle to an imaginary straight line extending in the front-rear direction of the base body 21. As shown in FIGS. 15 and 16, when the operation knob 66b is moved in the clockwise direction S, the projection 66c moves clockwise and slides along the guide portion 65g, and the outer diameter end of the guide portion 65g Reaching Then, the base engagement members 65 move radially inward to approach each other to be in the engagement position. Each base engagement member 65 narrows the opening of the receiving recess 22 in the engaged position to prevent the passage of the lower disc 53a, but secures an opening dimension through which the neck 53b can pass.

  On the other hand, as shown in FIG. 17 and FIG. 18, when the operation knob 66b is moved in the counterclockwise direction R, the projection 66c moves counterclockwise and slides along the guide portion 65g, and the guide The inner diameter end of the portion 65g is reached. Then, the base engagement members 65 move radially outward to be separated from each other to be in the disengagement position. Each base engagement member 65 completely exits the receiving recess 22 in the disengaged position.

  The base engagement member 65 enters between the annular surface 13b of the sheet 11 and the lower disc 53a at the engagement position as shown in FIGS. 13 to 16, and engages with the sheet base 53. As a result, the sheet base 53 is prevented from coming out of the receiving recess 22, and the sheet 11 is connected to the base 21. However, the seat body 11 and the seat body base 53 can rotate relative to the base body 21.

  On the other hand, the base engaging member 65 is disengaged from between the annular surface 13b of the sheet 11 and the lower disc 53a at the disengaged position as shown in FIGS. Thus, the sheet base 53 can move in and out of the receiving recess 22. The attachment and removal operations of the sheet 11 to the base 21 are performed by setting the pair of base engagement members 65 in the disengagement position.

  According to the second embodiment, as shown in FIGS. 13 and 14, the front base engagement member 65 releasably engages with the front side of the seat body base 53, and the rear base engagement member 65 engages the seat. Releasably engages the rear side of the body base 53. As a result, the sheet body base 53 accommodated in the receiving recess 22 is firmly connected to the base body 21 at two front and rear sides. Moreover, even if the seat base 53 is firmly connected to the base 21 at the front and rear two places, the seat 11 can be rotated about the rotation axis O, as shown by arrow A in FIG. You can change the direction to the direction.

  Furthermore, according to the second embodiment, as shown in FIG. 10 to FIG. 12, the sheet 11 can be attached to and detached from the base 21 with the front facing forward, or the sheet 11 is facing backward although not shown. It can be detached from the base body 21 or can be detached from the base body 21 while the sheet 11 is not shown in any orientation. As described above, according to the second embodiment, as in the first embodiment, the sheet can be rotated in a desired direction in use, and the sheet is attached to and detached from the base. be able to.

  Next, a third embodiment of the present invention will be described. FIG. 19 is a perspective view showing a third embodiment. FIG. 20 is a perspective view showing a state in which the sheet body is removed from the base body, and FIG. 21 is an explanatory view showing a state in which the sheet body is removed from the base body in a partial cross section. . FIG. 22 is an enlarged cross-sectional view of a sheet body base and a base body, showing the base body in a front-rear direction cross section and showing the cross section. FIG. 23 is a side view showing the sheet body taken out, FIG. 24 is a cross-sectional view showing the sheet body attached to the base body, and FIG. 25 is an enlarged view of FIG. FIGS. 22, 24 and 25 are sectional views of the child seat cut in the longitudinal direction. FIG. 26 is a schematic explanatory view showing the engagement position of the base engagement member, FIG. 27 is a schematic explanatory view showing the engagement release position of the base engagement member, the sheet is shown in a perspective view, and the base Is represented by a plan view. About this 3rd Embodiment, the code | symbol same about the structure in common with 1st and 2nd embodiment mentioned above is attached | subjected, description is abbreviate | omitted, and a different structure is demonstrated below. In the child seat 30 according to the third embodiment, as shown in FIG. 20, the base body 21 is provided with a tongue-like base engaging member 67, and two pairs of base engaging members 67 disposed opposite to each other approach each other. Thus, the seat body base 55 is engaged.

  At a central portion of the flat annular surface 13 b of the sheet 11, a sheet base 55 centered on the rotation axis O is provided. The seat base 55 includes a lower disc 55a and a neck 55b. The lower disc 55a is a flat disc disposed parallel to the annular surface 13b. The neck portion 55b is integrally formed with the sheet 11 to connect the sheet 11 and the lower disc 55a.

  The neck 55b and the lower disc 55a basically have the same diameter and are joined together to form a cylindrical portion. The lower disc 55a is fixed to the neck 55b by the bolt 16, but the lower disc 55a and the neck 55b may be integrally formed. Ears 56 are formed on the outer edge of the lower disc 55a. The ear portion 56 is a horizontal plate piece protruding outward from the lower end of the cylindrical portion, and is disposed on both sides in the front-rear direction of the sheet 11 to form a pair.

  An inward flange portion 24 is disposed at the upper end of the opening of the receiving recess 22. The inward flange portion 24 is integrally formed with the base body 21 and the inner diameter thereof is larger than the diameter of the cylindrical portion of the sheet body base 55 and smaller than the sum of the outer diameter of the ear portion 56 and the diameter of the cylindrical portion. Therefore, when the neck portion 55b penetrates the inward flange portion 24 and the ear portion 56 is located below the inward flange portion 24, the ear portion 56 is restricted from upward movement. However, the ear 56 is relatively rotatable along the inward flange 24.

  A notch 25 is formed in the inward flange portion (FIG. 27). The notches 25 are arranged on both sides in the width direction of the base body 21 to form a pair, and are notched larger than the ear 56. Accordingly, the circumferential positions of the pair of ear portions 56 having a positional relationship different by 180 degrees around the rotation axis O coincide with the circumferential positions of the pair of notches 25 having a positional relationship different 180 degrees around the rotation axis O Only when the pair of ears 56 can move in the direction of the axis of rotation O through the pair of notches 25.

  The base engagement members 67 are symmetrically disposed on both sides in the width direction of the base body 21 to form a pair, and are attached to the base body 21 so as to be capable of advancing and retracting in the width direction. An operating member 67 b is extended outward in the width direction of the base engaging member 67. As shown in FIG. 26, when the operation member 67b is pushed inward in the width direction, the base engagement member 67 gets into the notch 25 and is brought into the engagement position. When the circumferential position of the ear 56 coincides with the circumferential position of the notch 25, the base engaging member 67 in the notch 25 engages with the ear 56 and restricts the upward movement of the ear 56. However, the ear 56 is movable circumferentially around the rotation axis O, crossing the lower side of the base engagement member 67 which has entered the notch 25.

  When the base engagement member 67 is in the engaged position as described above, the sheet 11 is inseparably connected to the base 21. However, the sheet 11 can be rotated in any direction of 360 degrees.

  On the other hand, as shown in FIG. 27, when the operation member 67b is pulled outward in the width direction, the base engagement member 67 is disengaged from the notch 25 and is brought to the engagement release position. At this time, the ear 56 can pass through the notch 25 in the vertical direction.

  The mounting and dismounting operation of the seat body 11 to the base body 21 is performed with the seat body 11 facing 90 degrees and engaging the pair of base engagement members 65 with the base body 21 fixed forward to the vehicle seat. It does by setting it to the joint release position.

  According to the third embodiment, when the base engagement member 67 is in the engaged position, the base engagement member 67 cooperates with the inward flange portion 24 to turn the sheet 11 in any direction of 360 degrees. Also, separation from the base body 21 is prevented. When the sheet 11 is in a predetermined direction, the circumferential position of the ear 56 matches the circumferential position of the notch 25. That is, the sheet 11 can be attached to and detached from the base 21 only when the base engaging member 67 is in the engagement release position only when the sheet 11 is set to 90 degrees in the lateral direction.

  That is, even if the sheet 11 is set to 90 degrees in the lateral direction, the base engaging member 67 on one side in the width direction of the sheet 11 engages with one ear 56 of the sheet base 55, and the base engagement on the other side in the width direction The joint member 65 engages with the other ear 56 of the seat base 55. As a result, the sheet body base 53 accommodated in the receiving recess 22 is prevented from being inadvertently removed from the base body 21 even at 90 degrees in the lateral direction. Therefore, the operator can safely put the child on the sheet 11 and lower the sheet 11 while keeping the sheet 11 in the horizontal direction 90 degrees.

  Further, according to the third embodiment, even if the sheet 11 is oriented at an angle other than 90 degrees, the inward flange portion 24 engages with the pair of ears 56 so that the sheet 11 can be removed from the base 21. It does not come off carelessly. Moreover, even if the sheet base portion 55 is inseparably connected to the base body 21 by the two ear portions 56 different by 180 degrees in the circumferential direction, the sheet body 11 is rotatable around the rotation axis O, and the arrow in FIG. As indicated by A, it can be turned in any direction of 360 degrees.

  Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same or equivalent scope of the present invention.

  The vehicle seat child seat according to the present invention is advantageously used in a childcare apparatus.

10, 20, 30, 40 child seats for vehicle seats, 11 seat bodies,
12 cylindrical part, 13 lower surface, 13b annular surface, 15 retaining disc,
16 bolt, 21 base body, 22 receiving recess, 23 top surface,
24 inward flanges, 25 notches, 31 legs,
33 connection arm, 41 rotation lock means, 42 operation lever,
43a, 43b connected portions, 44a, 44b, 63 recessed portions,
50, 51, 53, 55 seat base, 52 central hole,
52a upper central hole, 52b lower central hole, 52c annular step surface,
53a, 55a lower disc, 53b, 55b neck, 56 ears,
60, 65, 67 base engagement member, 61 base engagement block,
61b cover, 62 engaged parts, 64 operation buttons,
65g guide, 66 operation ring, 66c protrusion,
67b Operating member, O axis of rotation.

Claims (7)

A base body having a recess opening upward, a sheet body rotatable about an axis extending in the vertical direction with respect to the base body, and a lower surface of the sheet body provided in the recess and received in the recess A seat body base serving as a center, and an engagement position provided in the recess of the base body and inseparably engaged with the seat body base while allowing rotation of the seat body, and the seat body base A base engagement member selectively set in an engagement release position for releasing the engagement with the first, rotation lock means movable in the vertical direction and provided outside the recess in the base body, and the sheet body A lock recess provided on the outer side of the sheet body base on the lower surface thereof and into which the rotation lock means enters, and a coupled portion provided in the lock recess;
The child vehicle seat for a vehicle seat, wherein the rotation lock means enters the lock recess to restrict rotation of the seat body, and is connected to the coupled portion to hold the seat body.   The child seat for a vehicle seat according to claim 1, wherein the seat body base is provided on the lower surface of the seat body so as to be relatively rotatable, and is relatively non-rotatably received in the recess.   The child seat for a vehicle seat according to claim 1, wherein the seat body base is non-rotatably provided on the lower surface of the seat body and is rotatably received in the recess. The sheet body base includes a polygonal plate disposed along the lower surface of the sheet body, and an engaged portion provided at an edge of the polygonal plate.
The recess in the base body receives the polygon plate in a relatively non-rotatable manner,
The base engagement member approaches the edge of the polygonal plate in the engaged position to engage with the engaged portion, and is separated from the edge of the polygonal plate in the disengaged position. The child seat for a vehicle seat according to claim 2, wherein the engagement with the engagement portion is released. The sheet body base includes a relatively large diameter lower plate disposed along the lower surface of the sheet body, and a relatively small diameter neck portion connecting the lower surface of the sheet body and the lower plate.
The recess rotatably receives the lower plate;
The base engagement member enters between the lower surface of the sheet and the lower plate at the engagement position, and separates from between the lower surface of the sheet and the lower plate at the disengagement position. A child seat for a vehicle seat according to Item 3. The seat body base includes a post having a center at the axis, and an ear projecting outward from the lower end of the post.
The recess rotatably receives the column portion;
In the recess, an inward flange portion formed in the recess to restrict axial movement of the ear portion, and a notch formed in the inward flange portion to allow axial movement of the ear portion And are provided,
The child seat for a vehicle seat according to claim 3, wherein the base engagement member enters the notch at the engagement position and separates from the notch at the disengagement position.   The child seat for a vehicle seat according to claim 6, wherein the circumferential position of the ear portion is arranged to coincide with the circumferential position of the notch when the sheet body is turned sideways.