JP5667807B2 - Child seat for vehicle - Google Patents

Description

  The present invention relates to a child seat operation structure that is attached to a vehicle seat and can be rotated and reclined.

  As a vehicle child seat in which the backrest portion of the seat body is adjustable in reclining and the seat body is rotatable with respect to the base member, for example, Japanese Patent Application Laid-Open No. 2002-301964 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2003-291698 are known. The thing as described in gazette (patent document 2) is known. In the child car seat disclosed in Patent Document 1, when the seat body (seat body) is rotated with respect to the base member (base), the operator rotates the operation dial provided at the front end of the base member. It is necessary to release and fix the seat main body by operating the reclining lever provided at the front end of the seat main body.

  In the vehicle child seat described in Patent Document 2, when the seat body (seat body) is rotated with respect to the base member (seat pedestal), the operator operates the rotation unlocking operation unit provided at the front end of the base member. Thus, it is necessary to unlock the seat body. Alternatively, when the reclining adjustment of the seat main body (seat main body) is performed, the operator needs to release the fixation of the seat main body by operating the reclining operation unit provided at the front end portion of the seat main body.

JP 2002-301964 A JP 2003-291698 A

  However, the above-described conventional child car seat causes problems as described below. In other words, since the operation part for adjusting the reclining and the operation part for adjusting the rotational position are provided at locations apart from each other, it has to be operated separately and the operation becomes complicated was there. In particular, when the seat main body is turned backward or sideways, the operation unit for reclining adjustment and the operation unit for adjusting the rotational position are significantly separated from each other, and the operation becomes more complicated.

  In view of the above circumstances, the present invention provides a child car seat that can be easily operated by an operator both when the reclining adjustment of the seat body and when the seat body is rotated with respect to the base member. The purpose is to do.

For this purpose, a child seat for a vehicle according to the present invention includes a seat body having a seat base portion and a backrest portion that can be tilted backward, a backrest tilting angle fixing mechanism that fixes a rearward tilt angle of the backrest portion with respect to the seat base portion, and a seat. A base member that rotatably supports the main body, a seat rotation position fixing mechanism that fixes a rotation position of the seat main body with respect to the base member, an angle lock release mechanism that releases a fixed state by a backrest tilt angle fixing mechanism, and a seat A rotation lock releasing mechanism for releasing a fixed state by the rotation position fixing mechanism; and a common operation unit for selectively operating the angle lock releasing mechanism and the rotation lock releasing mechanism. The common operation unit has a first operation element, a second operation element arranged adjacent to the first operation element, and an operation base part that supports these operation elements. The first operation element and the second operation element are the same. Is operated to operate either the angle lock release mechanism or the rotation lock release mechanism. Further, either the first operator or the second operator can be pushed toward the operation base, and is locked to the operation base at the pushed-in position, so that the first operator and the second operator remain. The other is operated non-identically with respect to either one. In this way, the other of the angle lock release mechanism and the rotation lock release mechanism is operated by being operated non-identically.

  According to the present invention, since the common operation unit that selectively operates the angle lock release mechanism and the rotation lock release mechanism is provided, the reclining adjustment of the seat body can be performed by operating one common operation unit, The seat body can be rotated relative to the base member. Therefore, the operation is simplified.

Common Operations section, button as an example, lever, dial, not good if the operator, such as rod-shaped body.

The same operation means that these operators are operated in the same direction, and the movement distances by the operation may be exactly the same or different. “Non-identical operation” means that these operators are operated in different directions, or one operator is fixed and only the other operator is operated. In order to easily perform such non-identical operations, in the present invention, either one of the first operator and the second operator can be pushed toward the operation base, and the operation base is engaged at the push-in position. sealed, while the remainder of the first operation device and the second operating element Ru is operated in a non-identical to either. According to the present invention , non-identical operations of the two operators can be realized with a simple configuration.

  In the conventional child seat, the operation part is provided at the front end of the seat part of the seat main body. Therefore, when the seat main body is in the rearward posture, the base member is covered with the operation part and the operation is difficult. On the other hand, as an embodiment of the present invention, the common operation part is provided on the backrest part. Since the backrest portion protrudes from the base member, according to this embodiment, the operator's hand can easily reach the common operation portion, so that the operation performance is improved.

  Although the present invention is not limited to one embodiment, the back tilt angle fixing mechanism is a rear tilt angle that engages with a seat base engaged portion formed on the seat base portion to fix the rear tilt angle. The angle lock release mechanism includes an angle lock release member that articulates the first operating element and the rearward tilt angle fixing member, and the seat rotation position fixing mechanism is attached to the seat base portion and has a base. A rotation position fixing member that engages with a base member engaged portion formed on the member, and the rotation lock release mechanism connects the first operation element and the second operation element to make the operation elements non-identical. The intermediate joint member that moves the rotational position fixing member by a simple operation, and the common operation portion moves only the rearward inclination angle fixing member by the same operation of the first operation element and the second operation element, and the seat base engaged portion The first operation element and the second operation element. It may be disengaged from the base member engaged portion by moving the rotational position fixing member by a non-identical operation. The articulation referred to here means that two elements are directly connected, or indirectly connected via a link member or an extension part.

  The first operating element and the second operating element may move forward or backward, or may rotate, and the operation direction is not particularly limited, but as one embodiment, the first operating element and the second operating element The two manipulators move forward and backward in the direction in which the backrest extends vertically, and the angle unlocking member is fixed to the lower end of the first shaft extending downward from the first manipulator. Is formed with a guide extending obliquely with respect to the advancing / retreating direction, and the rearward tilt angle fixing member has one end engaged with the guide and the other end can be inserted into and removed from the seat base engaged portion, and the right and left width direction of the backrest portion It may be a shaft extending in a straight line.

  In one embodiment, the intermediate articulation member is pivotally attached to the angle unlocking member, and is caused by the lower end of the second shaft extending downward from the second operation element with the pivot attachment point as a fulcrum. Sometimes the rotational position fixing member is moved.

  Also, as an embodiment, the backrest portion can adjust the rearward tilt angle intermittently, and the intermediate joint member is formed on the rotational position fixing member corresponding to the individual rearward tilt angles of the backrest portion when raised. Selectively connect to a plurality of connection points.

  As a preferred embodiment, the backrest portion can be tilted backward to the bed state, and the intermediate joint member is separated from the rotation position fixing member in the bed state, and the rotation position fixing member is not moved. According to this embodiment, the seat body in the bed state is made non-rotatable. As a result, by rotating the seat body, it is possible to prevent an inappropriate use in which a backrest portion that is largely inclined backward collides with the seat base portion.

  As described above, the child car seat for a vehicle according to the present invention includes the common operation unit for selectively operating the angle lock release mechanism and the rotation lock release mechanism. The operator can easily operate both in the case of rotating and rotating. Accordingly, the operation performance is improved when the reclining adjustment and the rotation position adjustment are performed in series.

It is a longitudinal cross-sectional view which shows the child seat for vehicles which becomes one Example of this invention. It is a rear view which takes out and shows the backrest part of the Example. It is a top view which takes out and shows the base member of the Example. It is a perspective view which takes out and shows the common operation part of the Example. It is a disassembled perspective view which shows the common operation part of FIG. It is explanatory drawing which shows the position of the back inclination angle fixing member and angle lock release member which are the fixed states which fix the back inclination angle of a backrest part. It is explanatory drawing which shows the position of the back inclination angle fixing member and angle lock cancellation | release member which were cancelled | released the fixed state. It is explanatory drawing which shows the chair state from which the backrest part stood up most. It is explanatory drawing which shows the chair state in which the backrest part inclined backward rather than the state shown in FIG. It is explanatory drawing which shows the bed state in which the backrest part inclined most back. It is explanatory drawing which shows the positional relationship of the seat main body shown in FIGS. It is explanatory drawing which compares and shows the motion of a common operation part and an intermediate articulation member, (a) is a normal state, (b) is the state where the 1st operation element was pushed in and it was made immovable, (C) shows a state where the second operation element is pulled up. It is a longitudinal cross-sectional view which shows the state in the middle of raising only a 2nd operation element upwards. It is explanatory drawing which shows the state which the intermediate joint member engaged with the rotation position fixing member. It is a longitudinal cross-sectional view which shows the state which pulled up the 2nd operation element of FIG. 13 completely. It is a longitudinal cross-sectional view which shows the state which rotated the seat main body shown in FIG. 15 180 degree | times. It is a longitudinal cross-sectional view which shows the state in the middle of returning the 2nd operation element shown in FIG. 16 below. It is a longitudinal cross-sectional view which shows the state in the middle of pulling up only a 2nd operation element in the chair state which made the backrest part tilt backward. It is a longitudinal cross-sectional view which shows the state which pulled up the 2nd operation element of FIG. 18 completely.

  Hereinafter, embodiments of the present invention will be described in detail based on examples shown in the drawings. FIG. 1 is a longitudinal sectional view showing a vehicle child seat according to an embodiment of the present invention. FIG. 2 is a rear view showing the backrest portion of the embodiment. FIG. 3 is a plan view showing the base member extracted from the embodiment. The vehicle child seat 11 includes a seat body 13 on which an infant is seated and a base member 81 that rotatably supports the seat body. The seat body 13 includes a seat portion 15, a backrest portion 17 that can be tilted backward, and a seat base portion 19 that supports the seat portion and the backrest portion.

  The rear end portion of the seat portion 15 and the lower end portion of the backrest portion 17 are connected to each other via a connecting shaft 71 extending in a straight line in the left-right direction. A pair of side wall portions are formed on the left and right sides of the seat base portion 19, and the side wall portions support the left and right sides of the seat portion 15 and the left and right sides of the backrest portion 17. If it adds here, the seat part 15 and the backrest part 17 are supported so that the movement to the front-back direction or the up-down direction is possible, the chair state which raised the backrest part 17 most, and the chair state which tilted the backrest part 17 back And a bed state in which the backrest portion 17 is most inclined backward. As will be described in detail later, the operator can place the seat body 13 in a desired chair state or bed state.

  A circular pedestal 19 b is formed in the lower part of the seat base 19. On the other hand, the base member 81 is formed with a circular recess 83 for receiving the base 19b. Thus, the seat body 13 can rotate around the vertical virtual straight line O passing through the center of the base member 81. The pedestal 19b is prevented from coming out of the recess 83 by a retaining pin or retaining guide (not shown).

  The base member 81 is placed on a vehicle seat, and is fixed to the vehicle seat by a vehicle seat belt being laid around. A lock-off device 87 for fixing the shoulder belt of the seat belt is provided on the standing portion 86 protruding upward from the rear end portion of the base member.

  The backrest portion 17 can change the rearward tilt angle with respect to the seat base portion 19, but is normally fixed by a backrest rearward tilt angle fixing mechanism described later so that the rearward tilt angle does not change. When the reclining adjustment is performed, the angle lock release mechanism (to be described later) is used to release the fixed state by the backrest tilting angle fixing mechanism, and the operator tilts the backrest part 17 backward or forward, so that the desired rear After adjusting to the tilt angle, the back tilt angle is fixed again by the back tilt angle fixing mechanism.

  The seat body 13 can rotate around a vertical virtual straight line O passing through the center of the base member 81, but is normally fixed by a seat rotation position fixing mechanism described later so that the rotation position does not change. Then, when adjusting the rotation position, a fixed state by the seat rotation position fixing mechanism is released by a rotation lock release mechanism, which will be described later, and the operator rotates the seat body 13 clockwise or counterclockwise to achieve a desired rotation. After adjusting to the position, the rotation position is fixed again by the seat rotation position fixing mechanism.

  A common operation unit 30 is provided on the rear surface side of the backrest 17. The common operation unit 30 is disposed at the center in the left-right direction of the backrest unit 17. The common operation unit 30 includes a first operation element 31, a second operation element 32 disposed adjacent to the first operation element 31, and an operation base 35 that supports the operation elements 31 and 32. The operation base portion 35 is integrally formed on the rear surface of the backrest portion 17. The operating elements 31 and 32 are operatively attached to the rear surface of the backrest portion 17, and extend in the vertical direction of the backrest portion 17, that is, in the longitudinal direction connecting the head side and the lumbar side of the infant supported by the backrest portion 17. Move forward and backward. The operator selectively operates the angle lock release mechanism and the rotation lock release mechanism by putting the finger of the hand on the operating elements 31 and 32 arranged at the upper end of the backrest portion 17 and operating the common operation unit 30. It can be operated. Details will be described later.

  FIG. 4 is a perspective view showing the common operation unit taken out of the embodiment, and FIG. 5 is an exploded perspective view showing the common operation unit of FIG. 4, and these views are seen from the back side of the backrest portion. Represents. The first operating element 31 is a vertically long rectangle, and a first shaft 33 extending downward is integrally coupled to the lower end of the first operating element 31. The first operating element 31 has a relatively large thickness, and the first shaft 33 has a relatively small thickness and a flat bar shape. As a result, the first shaft 33 is elastically deformed as indicated by a broken line in FIG. 5, and the first operation element 31 can be pushed toward the operation base 35.

  The second manipulator 32 is suitable for hanging up the second finger to the fifth finger of the operator's hand and pulling it upward, and a horizontally elongated recess 32c and a vertically long rectangular penetrating through the center of the recess 32c in the width direction. A hole 32h is formed. A second shaft 34 extending downward is integrally coupled to the lower end of the second operation element 32.

  The concave portion 32 c is formed on the side farther from the backrest portion 17 in the second operation element 32 attached to the backrest portion 17. Of the side portions of the second shaft 34, a flat rod-shaped first shaft 33 is disposed adjacent to the side surface close to the backrest portion 17. In other words, the first shaft 33 is disposed between the backrest portion 17 and the second shaft 34, and one surface of the first shaft 33 faces the second shaft 34, and the other surface faces the backrest portion 17. And as shown in FIG. 4, the 1st operation element 31 penetrates into the through-hole 32h, and protrudes in the normal state, and is located in the recessed part 32c. The lower end edge of the first operating element 31 protrudes from one surface of the first shaft 33 with a step. The first operating element 31 is locked to the lower end edge of the through hole 32h at this step, and the upper end edge of the first operating element 31 is also in contact with the upper end edge of the through hole 32h. Along with the child 32, the backrest part 17 moves forward and backward in the vertically extending direction. As a result, the first operating element 31 and the second operating element 32 are operated in the same way.

  An angle lock release member 37 that protrudes evenly from the central axis of the first shaft 33 is integrally coupled to the lower end side of the first shaft 33. Guides 39, which are long holes, are respectively formed on the left and right sides of the angle lock release member 37 serving as an angle lock release mechanism. Further, a pair of side wall portions 37w rises from the left and right side edges of the angle lock release member 37 to the second shaft 34 side.

  A through hole 37h is formed in each of the pair of side wall portions 37w. These left and right through holes 37h are located on a common axis (indicated by a one-dot chain line in FIG. 5). The left and right protrusions 42 of the intermediate articulation member 41 penetrate through the left and right through holes 37h, respectively. Thus, the intermediate joint member 41 is pivotally attached to the left and right side edges of the angle lock release member 37. The intermediate articulation member 41 is rotatable around the above-described axis. The intermediate articulation member 41 is substantially C-shaped, and constitutes a pair of inward projections 43 whose both ends face each other. The intermediate articulation member 41 rotates with a pair of inward protrusions 43 as free ends and an intermediate region 45 connecting these inward protrusions as a base end.

  In the intermediate region of the intermediate joint member 41, in addition to the above-described pair of protrusions 42 protruding outward in the left-right direction, an extending portion 44 positioned along a virtual plane orthogonal to the above-described rotation axis is provided. . Specifically, the extending portions 44 respectively extend from the left and right sides of the intermediate joint member 41 in the direction perpendicular to the rotation axis described above.

  A long hole 44h is formed along a pair of left and right extending portions 44 extending in parallel to each other. The long holes 44h face each other.

  A pair of protrusions 36 that protrude outward in the left-right direction are provided at the lower end of the second shaft 34. These protrusions 36 are respectively slidably engaged with the long holes 44h, and can slide along the extending direction of the long holes 44h.

  Returning to FIG. 4, the lower end of the first shaft 33 and the lower end of the second shaft 34 penetrate the helical spring 38. The upper end of the spring 38 presses a backrest portion (not shown in FIG. 4) upward, and the lower end of the spring 38 presses the lower end portions of the angle lock release member 37 and the second shaft 34 downward. As a result, the spring 38 biases the operating elements 31 and 32 downward. The operating elements 31 and 32 are normally in the lower position.

  FIG. 6 is an explanatory diagram showing positions of a rearward tilt angle fixing member and an angle lock release member in a fixed state in which the rearward tilt angle of the backrest portion is fixed. FIG. 7 is an explanatory view showing the positions of the rearward tilt angle fixing member and the angle lock releasing member released from the fixed state. 6 and 7 show a state seen from the front side of the backrest portion. FIG. 8 is an explanatory view showing a chair state in which the backrest portion is most raised. FIG. 9 is an explanatory diagram showing a chair state in which the backrest portion is tilted backward from the state shown in FIG. 8. FIG. 10 is an explanatory diagram illustrating a bed state in which the backrest portion is tilted most backward. 8 to 10 show that the backrest portion of this embodiment is reclining adjusted to three forms. FIG. 11 is an explanatory diagram showing the positional relationship of the backrest portion of the seat body shown in FIGS.

  With reference to FIGS. 6 to 11, the backrest tilt angle fixing mechanism of the present embodiment will be described. The backrest tilt angle fixing mechanism includes a pin 49 as a rear tilt angle fixing member. The pins 49 are arranged so that the two rod-shaped bodies are left-right symmetric, and extend in the left-right direction. One end of the pin 49 protrudes outward from the left and right side edges of the backrest 17. The other end is formed in an L shape and is inserted and engaged with the guide 39 of the angle lock release member 37. Referring to FIG. 6, the left side pin 49 will be described. The left end protrudes from the side edge 17s, the right end is bent downward on the page, and engages with the upper left end of the guide 39 on the left side of the page. The pin 49 on the right side of the drawing is also configured symmetrically with that described above.

  Three pairs of holes 22a, 22b, and 22c are formed in the pair of side walls 21 that rise from the left and right side edges of the seat base portion 19 and face each other, as seat base engaged portions. A pair of left and right pins 49 are selectively inserted into any one of these holes 22a, 22b, and 22c, and the rearward tilt angle of the backrest 17 is fixed.

  As shown in FIG. 8, in the chair state where the backrest portion 17 is raised most, one end of the pin 49 protrudes from the side edge 17s of the backrest portion 17 and is inserted into the hole 22a as shown in FIG. Thereby, the backward inclination angle of the backrest part 17 is fixed.

  When the operator tilts the backrest portion 17 backward from the state shown in FIG. 8, first, the finger of the hand is hung on the concave portion 32 c of the common operation portion 30 and pulled up. Then, the state shown in FIG. 6 changes from the state shown in FIG. 7 against the biasing force of the spring 38. That is, the first operating element 31 and the second operating element 32 are operated in the same manner and both move upward. Then, the angle lock release member 37 coupled to the first operating element 31 via the first shaft 33 also moves upward in the same direction and the same distance.

  The pair of guides 39 arranged symmetrically extend in the oblique direction so that the upper end portions are most distant from each other in the left-right direction and the lower end portions are closest to each other in the left-right direction.

  The pins 49 that respectively engage with the guides 39 and extend outward in the left-right direction are attached to the backrest portion 17 so as not to move in the vertical extension direction. In other words, the pin 49 is attached so as to be movable back and forth only in the longitudinal direction (left and right direction) of the pin, and cannot move in the direction perpendicular to the longitudinal direction. For this reason, as the guide 39 of the angle lock release member 37 moves upward, the other end of the pin 49 slides along the guide 39 of the elongated hole, and the one end of the pin 49 is the center in the left-right direction of the backrest portion 17. (Figure 7). As a result, one end of the pin 49 is pulled out from the hole 22a, and the fixed state by the tilting angle fixing mechanism after the backrest is released. Next, the operator moves the backrest portion 17 while pulling up the first operating element 31 and the second operating element 32 to adjust the desired backward tilt angle, and finally releases the hand from the recess 32c. Then, the operating elements 31 and 32 are returned to the normal lower position by the biasing force of the spring 38 (FIG. 7 → FIG. 6), and the backward tilt angle of the backrest 17 is fixed again.

  Such reclining adjustment is executed between the chair state and the bed state. Moreover, it is performed between the chair state in which the backrest part is most raised and the chair state in which the backrest part is relatively inclined backward.

  In addition, since the first operating element 31 engages with the hole 32h of the second operating element 32 (FIG. 4), the first operating element 31 is operated together with the second operating element 32 (FIG. 6, FIG. 6). FIG. 7). Further, the intermediate articulating member 41 that articulates the first operating element 31 and the second operating element 32 also moves forward and backward in the vertically extending direction, and during the same operation, from the rotational position fixing member 51 described later. They are separated (FIGS. 6 and 7). For this reason, the inward protrusion 43 does not engage with the rotational position fixing member 51.

  11 is an explanatory view showing the positional relationship between the seat main body shown in FIGS. 8 to 10, particularly the backrest portion. In FIG. 11, A corresponds to FIG. 8, B corresponds to FIG. This corresponds to FIG. The seat portion 15 and the backrest portion 17 connected via the connecting shaft 71 are interlocked with the reclining adjustment. Specifically, three elements of the connecting shaft 71, the backrest 17, and the seat 15 are formed on the left and right sides of the guide grooves 23 and 25 formed on the pair of side walls 21 and the backrest 17, respectively. Each of the guide grooves 24 guides the chair state A where the backrest portion is raised most up to the chair state B where the backrest portion is relatively tilted backward, or vice versa. Further, the chair state B in which the backrest portion is relatively inclined backward is changed to the bed state C or vice versa.

  Specifically, the left and right end portions of the connecting shaft 71 are inserted and connected to the pair of left and right first guide grooves 23, respectively. In addition, a pair of backrest shafts 18 facing each other and extending in the left-right direction are respectively fixed to the left and right side walls 21, and the backrest shaft 18 faces the central region in the vertical direction of the backrest 17. The shaft 18 is located above the connecting shaft 71. A pair of left and right backrest shafts 18 are inserted and connected to the pair of left and right second guide grooves 24, respectively. Thereby, the backrest part 17 is supported by the seat base member 19 through these two shafts 18 and 71.

  Further, a seat shaft (not shown) extending in the left-right direction is provided in the center region in the front-rear direction of the seat 15. This shaft is located in front of the connecting shaft 71. Then, the left and right end portions of the seat shaft are inserted and connected to the pair of left and right third guide grooves 25, respectively. Accordingly, the seat portion 15 is also supported by the seat base member 19 via the two seat portion shafts and the connecting shaft 71.

  The connecting shaft 71 is slidable along the first guide groove 23, and the backrest shaft 18 is slidable along the second guide groove 24, whereby the backrest 17 is moved and reclining adjusted. The A seat shaft (not shown) provided on the seat 15 is slidable along the third guide groove 25, whereby the seat 15 is interlocked with the backrest 17.

  Since the connecting shaft 71 slides along the first guide groove 23, it is understood that the lower end portion of the backrest portion 17 is in a different position in each of the states A, B, and C in FIG. Then, referring to the backrest portion 17 represented by a solid line and a two-dot chain line in FIG. 11, the intermediate joint member 41 is separated from the rotational position fixing member 51 while changing its position for each of the states A, B, and C. That is, in any of the three states shown in FIG. 8 to FIG. There is nothing. Further, the inner protrusion 43 does not engage with the rotational position fixing member 51 even during the same operation of the operation elements 31 and 32 (FIG. 7).

  8 to 10 show a case where the reclining adjustment is performed with the seat main body 13 facing backward, but the reclining adjustment can be performed with the seat main body 13 facing sideways with respect to the base member 81. Further, the reclining adjustment with the seat body 13 facing forward is not excluded.

  The rotation lock release mechanism of the present embodiment will be described. FIGS. 12A and 12B are explanatory views showing the movements of the common operation unit and the intermediate articulation member in comparison with each other. FIG. 12A shows a normal state, and FIG. (C) shows the state which pulled up the 2nd operation element, and shows typically seeing from the left-right direction of a backrest part. FIG. 12A shows the same state as that in FIG. 6, and the operating elements 31 and 32 are set to the normal lower position. When the operator inserts the finger of the hand into the recess 32c and pushes in the first operating element 31, the first shaft 33 is elastically deformed and bent as shown in FIG. 12 (b), and the first operating element 31 has a through hole 32h. And is accommodated in a recess 35 c formed in the operation base 35. The recess 35c is recessed with a step 35d on the upper side. As a result, the upper end of the first operating element 31 is locked to the step 35d, and the first operating element 31 is restricted from moving upward from the recess 35c.

  In FIG. 12B, when the operator puts his / her finger on the concave portion 32c and pulls up the second operating element 32 while pushing the first operating element 31, the first operating element 31 is shown in FIG. 12C. Only the second operating element 32 moves upward while being kept at the lower position. In such non-identical operations of the operating elements 31, 32, the angle unlocking member 37 coupled to the first operating element 31 via the first shaft 33 does not move, but the second operating element 32 via the second shaft 34. The protrusion 36 that couples with the spring 38 moves upward against the downward biasing force of the spring 38. Then, the protrusion 36 slides through the long hole 44h and draws the extended portion 44 into the angle lock release member 37, and the intermediate joint member 41 rotates around the protrusion 42 (FIG. 12B → (c)). ).

  In other words, in any of FIGS. 12A to 12C, it can be understood that the pin 49 does not move in the left-right direction because the angle lock release member 37 does not move. As described above, the angle lock release mechanism does not operate by the non-identical operation of the operation elements 31 and 32, and only the intermediate articulation member 41 as the rotation lock release mechanism rotates. On the other hand, only the angle lock release mechanism operates by the same operation of the operation elements 31 and 32 described above, and the intermediate articulation member 41 does not rotate (FIGS. 6 to 10).

  The non-identical operations of the operating elements 31 and 32 and the rotation of the intermediate articulation member 41 shown in FIG. 12 cancel the fixed state of the rotational position of the seat body 13 in addition to FIGS. Description will be made with reference to FIGS. 13 to 19 as appropriate. FIG. 13 is a longitudinal sectional view showing a state in the middle of lifting only the second operation element upward. FIG. 14 is an explanatory view showing a state where the intermediate articulation member is engaged with the rotation position fixing member. FIG. 15 is a longitudinal sectional view showing a state where the second operation element of FIG. 13 is completely pulled up. 16 is a longitudinal sectional view showing a state in which the seat body shown in FIG. 15 is rotated 180 degrees. FIG. 17 is a longitudinal sectional view showing a state in the middle of returning the second operation element shown in FIG. 16 downward. A rotation position fixing member 51 is rotatably provided in the seat base portion 19.

  The rotation position fixing member 51 as the seat rotation position fixing mechanism has a rotation shaft 52 extending in the horizontal direction, and is pivotally attached to the seat base portion 19 through the rotation shaft 52. An anti-rotation protrusion 53 is provided in a portion of the rotation position fixing member 51 far from the rotation shaft 52. The rotation preventing protrusion 53 penetrates through the seat base portion 19 and protrudes downward and is normally inserted into a receiving hole 85 as a base member engaged portion formed in the base member 81. The downwardly extending receiving holes 85 are formed at intervals in the circumferential direction of the rotation center indicated by O as shown in FIG. In the present embodiment, it is formed at four intervals of a forward position, a rearward position, a left lateral position, and a right lateral position with an interval of 90 degrees.

  As shown in FIGS. 13 to 17, connection grooves 54 and 55 are formed on both sides of the rotation position fixing member 51 located on both ends of the rotation shaft 52.

  Adjustment of the rotational position of the seat body 13 is executed in the order of FIGS. 1, 13, 15, 16, 17, and 8.

  In the state shown in FIG. 1, the first operating element 31 engages with the second operating element 32 as shown in FIG. Here, when the operator pushes in the first operating element 31 to release these engagements (FIG. 12B) and starts to lift only the second operating element 32 upward, the intermediate articulating member 41 rotates. First, as shown in FIG. 13, the inward protrusion 43 reaches the end of the connecting groove 54.

  When the operator continues to lift only the second operation element 32 upward, the intermediate articulation member 41 continues to rotate, and the inward protrusion 43 enters the connecting groove 54 and slides along the connecting groove 54. Then, the rotation position fixing member 51 is caused to rotate. When the second operating element 32 is pulled up to the upper position shown in FIG. 12C, the rotation preventing projection 53 is completely pulled out from the receiving hole 85 as shown in FIG.

  Next, the operator rotates the seat body 13 with his / her hand pulling up the second operation element 32 to set it to the backward rotation position as shown in FIG. 16, for example.

  Finally, when the operator releases his hand from the second operation element 32, the second operation element 32 and the projection 36 are returned to the normal lower position by the biasing force of the spring 38, and the intermediate articulation member 41 is shown in FIG. ) To return to the original position shown in FIG. Then, the inner protrusion 43 returns to the end of the connecting groove 54 as shown in FIG. 17, and finally leaves the rotational position fixing member 51 as shown in FIG. As a result, the rotation position fixing member 51 returns to its normal position by its own weight, and the rotation prevention protrusion 53 enters the corresponding receiving hole 85. Thus, the rotational position of the seat body 13 is fixed again (FIG. 17).

  When the second operating element 32 returns to the normal lower position, the through hole 32h of the second operating element 32 becomes the same position as the first operating element 31, and the first operating element 31 is moved by the restoring force of the first shaft 33. It enters the through hole 32h. Thus, the first operating element 31 and the second operating element 32 return to the normal positions shown in FIG.

  13 to 17 illustrate the chair state in which the backrest portion is raised most, but in this embodiment, the rotation position can be adjusted even in the chair state in which the backrest portion is relatively inclined. This will be described with reference to FIGS. FIG. 18 is a longitudinal sectional view showing a state in the middle of pulling up only the second operation element upward in a chair state in which the backrest portion is tilted backward. FIG. 19 is a longitudinal sectional view showing a state in which the second operation element in FIG. 18 is completely pulled up.

  The adjustment of the rotational position of the seat body 13 in the rear tilted chair state is executed in the order of FIGS. 9, 18 and 19. When the operator pushes the first operating element 31 into the recess 35c of the operating base 35 and lifts only the second operating element 32, the inward protrusion 43 reaches the end of the connecting groove 55 as shown in FIG.

  When the operator continues to lift only the second operation element 32 upward, the intermediate articulation member 41 continues to rotate, and the inward protrusion 43 enters the connection groove 55 and slides along the connection groove 55. Then, the rotation position fixing member 51 is caused to rotate. When the second operation element 32 is pulled up to the upper position shown in FIG. 12C, the rotation preventing projection 53 is completely pulled out from the receiving hole 85 as shown in FIG.

  Next, the operator rotates the seat main body 13 with the hand that is pulling up the second operating element 32 to, for example, set it to a laterally rotated position.

  Finally, when the operator releases his hand from the second operation element 32, the second operation element 32 returns to the normal lower position by the biasing force of the spring 38, and the rotation position fixing member 51 rotates to the normal position by its own weight. The rotation prevention projection 53 enters the corresponding receiving hole and the rotational position of the seat body 13 is fixed again.

  As described above, in the present embodiment, the rotational position can be adjusted regardless of whether the backrest is in the chair state. However, the rotational position cannot be adjusted in the bed state. Compared with the chair state shown in FIG. 8 and FIG. 9, the intermediate link member 41 is moved upward in the bed state shown in FIG. 10, and even if the intermediate link member 41 rotates, the rotational position fixing member This is because the intermediate articulation member 41 is separated from the rotational position fixing member 51 to a position where it does not contact 51. According to the present embodiment, it is possible to prevent a problem that the backrest portion 17 tilted most backward collides with the standing portion 86 of the base member 81 by the rotation of the seat body 13.

  Although the embodiments of the present invention have been described 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 range or equivalent range as the present invention.

  The vehicle child seat according to the present invention is advantageously used in a vehicle child seat capable of adjusting a rotational position and a reclining adjustment.

  DESCRIPTION OF SYMBOLS 11 Vehicle child seat, 13 Seat main body, 15 Seat part, 17 Backrest part, 18 Backrest part axis | shaft, 19 Seat base part, 21 Side wall, 22a, 22b, 22c hole, 23 1st guide groove, 24 2nd guide groove, 25 3rd guide groove, 30 Common operation part, 31 1st operation element, 32 2nd operation element, 33 1st shaft, 34 2nd shaft, 35 Operation base part, 35c Recessed part, 36 Projection, 37 Angle lock release member, 38 Spring , 39 Guide, 41 Intermediate joint member, 42 Protrusion, 43 Inner protrusion, 44 Extension part, 44 h Long hole, 51 Rotation position fixing member, 52 Rotating shaft, 53 Anti-rotation protrusion, 54,55 Connecting groove, 71 Connection shaft, 81 base member, 83 recess, 85 receiving hole, 86 upright portion, 87 lock-off device.

Claims (7)

A seat body having a seat base and a backrest that can be tilted backward;
A backrest tilt angle fixing mechanism for fixing a back tilt angle of the backrest portion with respect to the seat base portion;
A base member for rotatably supporting the seat body;
A seat rotation position fixing mechanism that fixes a rotation position of the seat body with respect to the base member;
An angle lock release mechanism for releasing the fixed state by the back tilt angle fixing mechanism;
A rotation unlocking mechanism for releasing a fixed state by the seat rotation position fixing mechanism;
A common operation section for selectively operating the angle lock release mechanism and the rotation lock release mechanism ,
The common operation unit has a first operation element, a second operation element arranged adjacent to the first operation element, and an operation base part that supports these operation elements.
The first operating element and the second operating element are operated in the same manner to operate one of the angle unlocking mechanism and the rotation unlocking mechanism,
Either one of the first operator and the second operator can be pushed toward the operation base, and is locked to the operation base at the push-in position, and the first operator and the second operator A vehicle child seat for operating the other of the angle lock release mechanism and the rotation lock release mechanism by operating the other one of the remaining second operating elements non-identically, and operating the other non-identical . The vehicle child seat according to claim 1 , wherein the common operation portion is provided on the backrest portion. The backrest backward tilt angle fixing mechanism includes a rearward tilt angle fixing member that engages with a seat base engaged portion formed in the seat base portion and fixes the rearward tilt angle,
The angle lock release mechanism has an angle lock release member that articulates the first operation element and the backward tilt angle fixing member,
The seat rotation position fixing mechanism includes a rotation position fixing member that is attached to the seat base portion and engages with a base member engaged portion formed on the base member,
The rotation unlocking mechanism has an intermediate articulation member that articulates the first operation element and the second operation element and moves the rotation position fixing member by non-identical operation of these operation elements,
The common operation part moves only the rearward tilt angle fixing member by the same operation of the first operation element and the second operation element to release the engagement with the seat base engaged part, 3. The vehicle child seat according to claim 2 , wherein the rotational position fixing member is moved by two non-identical operations of the operating elements to release the engagement with the base member engaged portion. The first operating element and the second operating element are moved back and forth in the vertical direction of the backrest part,
The angle lock release member is fixed to a lower end of a first shaft extending downward from the first operator,
The angle lock release member is formed with a guide extending obliquely with respect to the forward / backward movement direction,
4. The shaft according to claim 3 , wherein the rearward tilt angle fixing member is a shaft that has one end engaged with the guide and the other end that can be inserted into and removed from the seat base engaged portion and extends in the left-right width direction of the backrest portion. Child seats for vehicles. The intermediate articulation member is pivotally attached to the angle lock release member, and is caused by a lower end of a second shaft extending downward from the second operation element with the pivot attachment point as a fulcrum. The child seat for vehicles according to claim 4 which moves a position fixing member. The backrest part can adjust the rearward tilt angle intermittently,
The intermediate articulation member, said at causing, selectively coupled to a plurality of connection points formed on the rotational position fixing member corresponding to the individual after tilt angle of the backrest, according to claim 5 Child seat for vehicles. The backrest can be tilted backward to the bed state,
The vehicle child seat according to claim 6 , wherein the intermediate joint member is separated from the rotation position fixing member in the bed state, and the rotation position fixing member is not moved.

Images