JP2017105348A - child seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a child seat in which a leg support can be installed even for an automobile having an underfloor storage part.SOLUTION: A leg support (12) includes: a first cylindrical member (20); a second cylindrical member (30); a third cylindrical member (40); a contact part (70); a first adjustment member (50) for adjusting a drawing length of the second cylindrical member from the first cylindrical member; and a second adjustment member (60) for adjusting a drawing length of the third cylindrical member from the second cylindrical member. The first adjustment member includes a first connection part (51) for changing the first cylindrical member and the second cylindrical member between a lock state and a lock release state and a first operation part which is provided on the contact part and controls displacement of the first connection part in a vertical direction, and the second adjustment member includes a second connection part (61) for changing the second cylindrical member and the third cylindrical member between a lock state and a lock release state and a second operation part which is provided on the contact part and controls displacement of the second connection part in a vertical direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a child seat, and more particularly, to a child seat having a leg support.

  Conventionally, a leg support is attached to the front end of the base member of the child seat in order to prevent the child seat from being tilted forward and becoming unstable when sudden braking is applied or when a forward collision occurs.

  Since the height from the floor of the automobile to the seat varies depending on the vehicle type or the like, the leg support usually has a height adjusting function.

  For example, Japanese Patent Laying-Open No. 2003-94994 (Patent Document 1) discloses a leg support that can be adjusted in height by two members, an outer tube and an inner tube. It is disclosed that the drawer length is adjusted by sliding the inner tube relative to the outer tube.

  On the other hand, JP 2009-166767 (Patent Document 2) is attached to a base member of a child seat and extends to a position where it abuts against the floor of an automobile, and is accommodated in an upper end of the tension member so as to be vertically movable. A support member for supporting the seat body is disclosed. It has been disclosed that the tension member includes an outer pipe and an inner pipe, and the length of the tension member is adjusted by an operation lever according to the distance from the base member to the floor of the vehicle.

JP 2003-94994 A (Patent No. 4898037) JP 2009-166767 A (Japanese Patent No. 5247161)

  As described above, since the leg support has a height adjustment function, it can be attached to many types of automobiles. However, there is an automobile in which an underfloor storage part is formed under the floor of the rear seat. In this case, since the strength of the cover of the underfloor storage unit is weak, the leg support cannot be installed on the cover of the underfloor storage unit. On the other hand, when trying to install the leg support directly in the underfloor storage part, the conventional leg support could not cope.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a child seat in which a leg support can be installed even in an automobile having an underfloor storage unit. And

  For this purpose, a child seat according to one aspect of the present invention includes a child seat body fixedly mounted on a car seat, and an upper end connected to the front end of the child seat body, from the child seat body to the car floor. A leg support that is height-adjustable according to the distance, the leg support being connected to the front end of the child seat body and extending in the vertical direction, and in the vertical direction in the first cylindrical member A second cylindrical member that is received in a displaceable manner, a third cylindrical member that is received in a second portion of the tubular material so as to be displaceable in a vertical direction, and a lower end of the third tubular member that is connected to the floor surface. A contact portion to be contacted, a first adjustment member for adjusting a pull-out length of the second tubular member from the first tubular member, and a pull-out length of the third tubular member from the second tubular member Adjust The first adjusting member is provided to be displaceable in the vertical direction within the third cylindrical member, and the first cylindrical member and the second cylindrical member are arranged according to the position thereof. A first connecting part for switching between the locked state and the unlocked state; and a first operating part that is provided at the abutting part and controls the vertical displacement of the first connecting part. A second connecting portion provided in the three cylindrical members so as to be vertically displaceable, and for switching the second cylindrical member and the third cylindrical member between a locked state and an unlocked state according to the position; And a second operating part that is provided at the contact part and controls the vertical displacement of the second connecting part.

  Preferably, the first tubular member is provided with a plurality of first receiving holes at intervals in the height direction, and the first adjusting member is formed in the first receiving hole according to the displacement of the first connecting portion. A first lock member that can be switched between the engaged engagement position and the non-engagement position that has come out of the first receiving hole is included, and the second cylindrical member has a plurality of second portions spaced in the height direction. A receiving hole is provided, and the second adjustment member is switched between an engaging position fitted in the second receiving hole and a non-engaging position coming out of the second receiving hole according to the displacement of the second connecting portion. A second locking member is included.

  Preferably, the second cylindrical member is provided with a first motion conversion element that converts the vertical movement of the first connecting portion into the horizontal movement of the first lock member and transmits the movement to the first lock member, The third cylindrical member is provided with a second motion conversion element that converts the vertical movement of the second connecting portion into the horizontal movement of the second lock member and transmits the movement to the second lock member.

  Preferably, the first motion conversion element includes a first elongated hole provided in the first locking member and extending in an oblique direction, a first vertical movement member having a function as an axis located in the first elongated hole, The two-motion converting element includes a second elongated hole provided in the second locking member and extending in an oblique direction, and a second vertical movement member having a function as an axis located in the second elongated hole.

  Preferably, the first connecting portion and the second connecting portion are provided so as to overlap in the width direction in the third cylindrical member, and the first connecting portion is provided with a through hole extending in the vertical direction, and the second lock member. Is located in the through hole and penetrates through the second receiving hole.

  ADVANTAGE OF THE INVENTION According to this invention, the child seat which can install a leg support also with respect to the motor vehicle which has an underfloor storage part can be provided.

It is a side view which shows the child seat in embodiment of this invention. It is a front view of the leg support of the maximum length in the embodiment of the present invention. It is a front view of the leg support which shows the state which accommodated the 3rd cylindrical member in the 2nd cylindrical member from the state shown in FIG. It is a front view of the leg support of the minimum length which shows the state which accommodated the 2nd cylindrical member in the 1st cylindrical member from the state shown in FIG. It is a longitudinal cross-sectional view of the leg support of FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 2. It is a longitudinal cross-sectional view of the leg support of FIG. It is sectional drawing seen along line VIII-VIII of FIG. It is a longitudinal cross-sectional view of the leg support of FIG. It is sectional drawing seen along line XX of FIG. It is a longitudinal cross-sectional view corresponding to FIG. 9 which shows the lock release state of a 1st adjustment member. It is sectional drawing corresponding to FIG. 10 which shows the lock release state of a 1st adjustment member. It is a longitudinal cross-sectional view which shows the locked state of a 2nd adjustment member. It is sectional drawing seen along line XIV-XIV of FIG. It is a longitudinal cross-sectional view corresponding to FIG. 13 which shows the lock release state of a 2nd adjustment member. It is sectional drawing corresponding to FIG. 14 which shows the lock release state of a 2nd adjustment member.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

(Outline of child seat)
First, the outline of the child seat according to the present embodiment will be described with reference to FIG. In the following description, the front-rear direction corresponds to the front-rear direction of the automobile, and the left-right direction corresponds to the left-right direction viewed from the front of the automobile.

  The child seat 100 includes a child seat body 10 fixedly mounted on the seat 1 of the automobile, and a leg support 12 whose upper end is connected to the front end of the child seat body. The child seat body 10 may include a base member 10a on the seat 1 of the automobile and a seat body 10b attached on the base member 10a.

  The leg support 12 has a function of adjusting the height according to the distance from the base member 10a to the floor surface of the automobile. Specifically, as shown in FIG. 1, the length of the leg support 12 can be changed according to the distance h1 from the front lower end surface of the base member 10a to the floor surface 14. Here, in the present embodiment, when the underfloor storage portion 13 is under the floor of the rear seat 1 of the automobile, the leg support 12 is a distance from the front lower end surface of the base member 10 a to the bottom surface 15 of the underfloor storage portion 13. It is configured to be extendable to a length corresponding to h2. Thereby, the leg support 12 can be installed on the bottom surface 15 of the underfloor storage unit 13.

(Composition of leg support)
With reference to FIGS. 2-10 further, the structural example of the leg support 12 is demonstrated in detail. In the present embodiment, the bottom surface 15 of the underfloor storage unit 13 is also defined as a “floor surface”. Therefore, the bottom surface 15 is also referred to as a floor surface 15 below.

  The leg support 12 is connected to the front end of the base member 10a and extends in the vertical direction. The second cylindrical member 30 is received in the first cylindrical member 20 so as to be displaceable in the vertical direction. The third cylindrical member 40 is received in the second cylindrical member 30 so as to be displaceable in the vertical direction, and the contact portion 70 is connected to the lower end of the third cylindrical member 40. Further, the leg support 12 includes a first adjustment member 50 for adjusting the pull-out length of the second tubular member 30 from the first tubular member 20, and a third tubular member from the second tubular member 30. And a second adjustment member 60 for adjusting the pull-out length of 40.

  A pair of indicators 80 for confirming whether or not the leg support 12 is securely installed on the floor surfaces 14 and 15 may be provided on the bottom surface of the contact portion 70.

  FIG. 2 shows the maximum length leg support 12 from which both the second tubular member 30 and the third tubular member 40 are drawn. FIG. 4 shows the second tubular member 30 and The leg support 12 of the minimum length which shows the state in which both the 3rd cylindrical members 40 were accommodated is shown. FIG. 3 shows the leg support 12 having a length (hereinafter referred to as “intermediate length”) in which only the second cylindrical member 30 is pulled out. Desirably, the height (length) of the leg support 12 can be adjusted within a range of at least 270 mm to 525 mm. In addition, since the leg support 12 may be installed behind the automobile floors 14 and 15, this range is not limited to the range corresponding to the vertical length as shown in FIG.

  The first to third cylindrical members 20, 30, 40 have, for example, a substantially rectangular cross section. A configuration example of the first to third cylindrical members 20, 30, 40 in this case is as follows.

  The first tubular member 20 has a front side surface 201, a left side surface 202, a right side surface 203, and a rear side surface 204. The first tubular member 20 is provided with, for example, eight pairs of first receiving holes 21 and 22 at intervals in the height direction. One receiving hole 21 is provided in a row on the left side surface 202, and the other receiving hole 22 is provided in a row on the right side surface 203. The first receiving holes 21 and 22 are provided on the left side surface 202 and the right side surface 203 so as to be shifted in the front-rear direction by the thickness of first lock members 54 and 55 described later.

  The second tubular member 30 has a front side surface 301, a left side surface 302, a right side surface 303, and a rear side surface 304. The second cylindrical member 30 is provided with, for example, eight pairs of second receiving holes 31 and 32 with an interval in the height direction. One receiving hole 31 is provided in a row on the left side surface 302, and the other receiving hole 32 is provided in a row on the right side surface 303. The second receiving holes 31 and 32 are provided on the left side surface 302 and the right side surface 303 so as to be shifted in the front-rear direction by the thickness of second lock members 64 and 65 described later. In addition, a pair of through holes 33 and 34 are provided at positions where the upper end portions of the left side surface 302 and the right side surface 303 face each other.

  The third tubular member 40 has a front side surface 401, a left side surface 402, a right side surface 403, and a rear side surface 404. A pair of through-holes 41 and 42 are provided at positions where the upper ends of the left side surface 402 and the right side surface 403 face each other.

  In the present embodiment, the receiving holes 21, 22, 31, and 32 are through holes.

  The first adjustment member 50 switches the first tubular member 20 and the second tubular member 30 between the locked state and the unlocked state, and adjusts the height of the first tubular member 20 and the second tubular member 30. It has the function to do. The first adjustment member 50 functions when the leg support 12 has the intermediate length shown in FIG. 3 and the minimum length shown in FIG. 4, and does not function when the leg support 12 has the longest length shown in FIG.

  The 1st adjustment member 50 is provided in the 3rd cylindrical member 40 so that a vertical displacement is possible, and the 1st cylindrical member 20 and the 2nd cylindrical member 30 are locked and unlocked according to the position. Provided at the upper end of the second tubular member 30, the first operating part 52 provided on the contact part 70 for controlling the vertical displacement of the first connecting part 51, and the first tubular part 30. And a first lock mechanism 53 that moves in the horizontal direction in accordance with the displacement of the first connecting portion 51.

  The first connecting portion 51 is provided in the vertical direction along the left side surface 402 in the third tubular member 40. The first connecting portion 51 is substantially the same as the vertical length of the third tubular member 40. The first connecting portion 51 includes a first main body 510 and a spring 514 that is provided at the lower end 511 of the first main body 510 and biases the first main body 510 downward. An opening 513 extending in the vertical direction is provided on the upper side of the first main body 510. The opening 513 is opened in the left-right direction so as to pass through second lock members 64 and 65 described later. The opening 513 is formed to be slightly larger than the vertical length of the second lock members 64 and 65. Thereby, when making the 2nd lock members 64 and 65 into a locked state and a lock release state, the 1st connection part 51 does not become obstructive. Further, the upper end portion 512 of the first connecting portion 51 protrudes above the upper end of the third tubular member 40 when the first connecting portion 51 is displaced upward.

  With particular reference to FIGS. 2, 6, 8, 10, and 12, the first operation unit 52 is provided on the left side of the abutment unit 70, below the pressing unit 520, the rotation shaft 521, and the first connection unit 51. And a push-up portion 522 located at the end. The pressing part 520 is a part pressed by hand, and the first connecting part 51 is pushed upward by pressing the pressing part 520. Specifically, when the pressing unit 520 is pressed, the entire first operation unit 52 rotates about the rotation shaft 521 as shown in FIG. 12, the push-up unit 522 moves upward, and the first push-up unit 522 moves along with the movement of the push-up unit 522. One connecting portion 51 is pushed upward.

  Referring to FIG. 5, the first lock mechanism 53 is provided at the upper end of the second cylindrical member 30 and has a pair of first lock members 54 and 55. The first lock members 54 and 55 are provided so as to overlap in the front-rear direction. The first lock members 54 and 55 have, for example, a flat plate shape. Specifically, the first lock members 54 and 55 are engaged with the first receiving holes 21 and 22 through the first tubular member 20 according to the displacement of the first connecting portion 51. The first lock portions 540 and 550 are switched to the disengaged positions that have come out of the first receiving holes 21 and 22. The first lock portions 540 and 550 penetrate the through holes 33 and 34 even in the unlocked state. In contrast, the first lock portions 540 and 550 penetrate the first receiving holes 21 and 22 only in the locked state. The detailed structure of the first lock mechanism 53 will be described later.

  The 2nd adjustment member 60 is provided in the 3rd cylindrical member 40 so that a vertical displacement is possible, and the 2nd cylindrical member 30 and the 3rd cylindrical member 40 are locked and unlocked according to the position. A second connecting part 61 for switching to the second connecting part 61, a second operating part 62 provided on the contact part 70 for controlling the vertical displacement of the second connecting part 61, and an upper end of the third tubular member 40. And a second lock mechanism 63 that moves in the horizontal direction in accordance with the displacement of the second connecting portion 61.

  The second connecting portion 61 is provided in the vertical direction along the right side surface 403 in the third tubular member 40. That is, the 1st connection part 51 and the 2nd connection part 61 are provided in piles in the left-right direction. The second connecting portion 61 is substantially the same as the vertical length of the third tubular member 40. The second connecting portion 61 includes a second main body portion 610 and a spring 614 that is provided at the lower end portion 611 of the second main body portion 610 and biases the second main body portion 610 downward.

  With particular reference to FIGS. 2, 14, and 16, the second operation portion 62 is provided on the right side of the contact portion 70, and is positioned at the lower end of the pressing portion 620, the rotation shaft 621, and the second connection portion 61. And a push-up unit 622. The pressing part 620 is a part that is pressed by hand. By pressing the pressing part 620, the pressing part 620 rotates around the rotation shaft 621 as shown in FIG. 16, and the push-up part 622 moves upward. The 1st connection part 51 is pushed upwards with a movement.

  As described above, the second lock mechanism 63 has a pair of second lock members 64 and 65 provided at the upper end of the third cylindrical member 40. The second lock members 64 and 65 are provided so as to overlap in the front-rear direction and are arranged symmetrically. The second lock members 64 and 65 have, for example, a flat plate shape. Specifically, the second lock members 64 and 65 are engaged with the second receiving holes 32 and 31 through the second cylindrical member 30 according to the displacement of the second connecting portion 61. The second lock portion 640 is switched to the non-engagement position that has come out of the second receiving holes 32 and 31. The second lock portions 640 and 650 pass through the through holes 42 and 41 even in the unlocked state. On the other hand, the second lock portions 640 and 650 penetrate the receiving holes 32 and 31 facing each other only in the locked state. In addition, the penetration direction to the 2nd receiving holes 32 and 31 of the 2nd lock parts 640 and 650 is the same direction as the penetration direction of the 1st reception holes 22 and 21 of the 1st lock parts 540 and 550. The detailed structure of the second lock mechanism 63 will be described later.

  An opening 513 extending in the vertical direction is provided above the first main body 510 of the first connecting portion 51, and the second lock members 64 and 65 are located in the opening 513 and penetrate the second receiving holes 32 and 31. To do. Thereby, locking operation with the 1st cylindrical member 20 and the 2nd cylindrical member 30 and locking operation with the 2nd cylindrical member 30 and the 3rd cylindrical member 40 can be performed independently.

  As described above, the leg support 12 includes three cylindrical members, the first cylindrical member 20, the second cylindrical member 30, and the third cylindrical member 40, as rod-shaped members. Therefore, the height adjustment range is wider than that of the conventional leg support, and it can be applied to a vehicle type having the underfloor storage portion 13, and the applicable range of the vehicle can be expanded.

  Furthermore, it is not necessary to provide a through hole in the thinnest third cylindrical member 40, and by providing the first connecting part 51 and the second connecting part 61 extending in the vertical direction in the thinnest third cylindrical member 40, The third tubular member 40 can have sufficient strength. Thereby, it is possible to improve safety while widening the height adjustment range of the leg support 12. Further, since the contact portion 70 is an operation portion by hand when the leg support 12 is installed, it is functional to provide the operation portions 52 and 62 on the contact portion 70.

  A configuration example of the first lock mechanism 53 will be described with reference to FIGS. FIG. 9 is a longitudinal sectional view of the leg support of FIG. 10 is a cross-sectional view taken along line XX of FIG. FIG. 11 is a longitudinal sectional view corresponding to FIG. 9 showing the unlocked state of the first adjustment member. FIG. 12 is a cross-sectional view corresponding to FIG. 10 showing the unlocked state of the first adjustment member.

  The first lock mechanism 53 includes a pair of first lock members 54 and 55 provided at the upper end of the second cylindrical member 30 and a first vertical movement member 56.

  In addition to the first lock portion 540 described above, the first lock member 54 is provided at a substantially central portion of the first lock member 54 and has a first long hole 541 extending in an oblique direction. The first long hole 541 descends toward the left side surface 302 of the second cylindrical member 30. In addition to the first lock portion 550 described above, the first lock member 55 includes a first elongated hole 551 that is provided at a substantially central portion of the first lock member 55 and extends in an oblique direction. The first long hole 551 descends toward the right side surface 303 of the second tubular member 30. The oblique direction means a direction having a certain angle with respect to the vertical direction.

  The first vertical movement member 56 includes a shaft 560 positioned in the first long holes 541 and 551 and a support portion 561 that supports the shaft 560. The shaft 560 penetrates the first long holes 541 and 551 in the front-rear direction. As shown in FIG. 10, the support portion 561 has a square shape when viewed from the side. Since the support portion 561 supports the shaft 560, the support portion 561 and the shaft 560 move integrally in the vertical direction. The support portion 561 has an opening that opens in the left-right direction, and the first lock members 54 and 55 are located in the opening. When the support portion 561 is pushed upward by the upper end portion 512 of the first connecting portion 51 and moves upward, the shaft 560 moves upward along the inclination of the first long holes 541 and 551 of the first lock portions 540 and 550. To do. Thereby, the first lock portion 540 is pulled out from the first receiving hole 22, and the first lock portion 550 is pulled out from the first receiving hole 21.

  Thus, the 1st long holes 541 and 551 of the 1st lock members 54 and 55 and the 1st up-and-down direction moving member 56 have a function as the 1st motion conversion element. The first motion conversion element converts the vertical movement of the first connecting part 51 into the horizontal movement of the first lock parts 540 and 550 and transmits it to the first lock part 540.

  A pair of springs 532 is provided between the upper member 531 provided at the upper edge of the second cylindrical member 30 and the shaft 560. As a result, the first vertical movement member 56 is biased downward.

  As described above, the first adjustment member 50 functions when the leg support 12 has the intermediate length shown in FIG. 3 and the minimum length shown in FIG. That is, the first adjustment member 50 functions when the second lock mechanism 63 passes through the second receiving holes 31 and 32 provided at the uppermost position. Specifically, when the pressing unit 520 of the first operation unit 52 is pressed in the direction shown in FIG. 12 by hand, the push-up unit 522 of the first operation unit 52 moves upward and the first connection unit 51 pushes up. The upper end portion 512 abuts on the support portion 561 and the support portion 561 is pushed upward, so that the shaft 560 moves upward along the inclination of the first long hole 541 and the first lock portions 540 and 550 are moved. Is withdrawn from the first receiving holes 22, 21. Thereby, the engagement state of the first lock part 540 with the receiving hole 22 is released, and the engagement state of the first lock part 550 with the first reception hole 21 is released. That is, the locked state of the first cylindrical member 20 and the second cylindrical member 30 is released.

  When the hand is released from the first operation part 52, the first operation part 52 is returned to the position shown in FIG. 10 by the urging force of the spring 514, and the first lock parts 540 and 550 are placed in the first receiving holes 22 and 21. Penetrated. Thereby, the 1st adjustment member 50 will be in a locked state.

  The structure of the second lock mechanism 63 will be described with reference to FIGS. FIG. 13 is a longitudinal sectional view showing a locked state of the second adjustment member. 14 is a cross-sectional view taken along line XIV-XIV in FIG. FIG. 15 is a longitudinal sectional view corresponding to FIG. 13 showing the unlocked state of the second adjustment member. FIG. 16 is a cross-sectional view corresponding to FIG. 14 showing the unlocked state of the second adjustment member. 13-16, illustration of the 1st cylindrical member 20, the 2nd cylindrical member 30, and the 1st adjustment member 50 is abbreviate | omitted for easy understanding.

  The second lock mechanism 63 includes a pair of second lock members 64 and 65 provided at the upper end of the third cylindrical member 40 and a second vertical movement member 66.

  Referring to FIG. 5, the second lock member 64 is provided at a second lock portion 640 that fits in the second receiving hole 32 and a substantially central portion of the second lock member 64 and extends in an oblique direction. It has a hole 641 and a lateral hole 642 provided above the second lock member 64 and extending in an oblique direction. The second long hole 641 descends toward the left side surface 402 of the third tubular member 40. The second lock member 65 includes a second lock portion 650 that fits into the second receiving hole 31, a second elongated hole 651 that is provided in a substantially central portion of the second lock member 65 and extends in an oblique direction, and a second lock It has a horizontal hole 652 provided above the member 64 and extending in an oblique direction. The second long hole 651 descends toward the right side surface 403 of the third tubular member 40. The oblique direction means a direction having a certain angle with respect to the vertical direction. The horizontal holes 642 and 652 are provided with a fixed shaft 631 that penetrates the front side surface 401 and the rear side surface 404.

  The second vertically moving member 66 has an axial shape, and spans over the second connecting portion 61 as shown in FIGS. Accordingly, when the second connecting portion 61 moves upward, the second vertical movement member 66 also moves upward along the inclination of the second long holes 641 and 651. Thus, the second lock portion 640 is pulled out from the second receiving hole 32, and the second lock portion 650 is pulled out from the second receiving hole 31.

  Thus, the 2nd long holes 641 and 651 of the 2nd lock members 64 and 65 and the 2nd up-and-down direction moving member 66 have a function as the 2nd motion conversion element. The second motion conversion element converts the vertical movement of the second connecting portion 61 into the horizontal movement of the second lock portions 640 and 650 and transmits the movement to the second lock portions 640 and 650.

  The horizontal holes 642 and 652 of the second lock members 64 and 65 are provided with a fixed shaft 631 that penetrates the front side surface 401 and the rear side surface 404 of the third tubular member 40. Thereby, the movement to the up-down direction of the 2nd lock members 64 and 65 is controlled.

  When the pressing portion 620 of the second operation portion 62 is manually pressed in the direction shown in FIG. 16, the push-up portion 622 moves upward, whereby the lower end portion 611 of the second connection portion 61 is pushed upward, and the second When the entire main body 610 moves upward, the second vertical movement member 66 moves above the second elongated holes 641 and 651, and the second lock parts 640 and 650 move from the second receiving holes 32 and 31. Pulled out. Accordingly, the second lock portion 640 is released from the engagement state with the receiving hole 32, and the second lock portion 650 is released from the engagement state with the reception hole 31. That is, the locked state of the second cylindrical member 30 and the third cylindrical member 40 is released.

  When the hand is released from the pressing portion 620 of the second operation portion 62, the second operation portion 62 is returned to the position shown in FIG. 10 by the biasing force of the spring 614, and the second lock portions 640 and 650 are the second receiving holes. 31 and 32 are penetrated. Thereby, the 2nd adjustment member 60 will be in a locked state.

(Operation when shifting the leg support from the minimum length to the intermediate length)
The operation of moving the leg support 12 from the minimum length shown in FIGS. 9 and 10 to the intermediate length shown in FIGS. 7 and 8 is as follows.

  First, the first operation portion 52 of the first adjustment member 50 on the left side of the contact portion 70 is pressed by hand to remove the first lock portions 540 and 550 from the first receiving holes 22 and 21 positioned below, respectively. . In this state, the second cylindrical member 30 is pulled out to a desired position, and the hand is released from the first operation unit 52. The first operating portion 52 is returned to the original position by the biasing force of the spring 514, and the pair of first lock portions 540 and 550 are inserted into the first receiving holes 22 and 21 positioned above the second cylindrical member 30. The relative movement between the first tubular member 20 and the second tubular member 30 is prohibited.

(Operation when shifting the leg support from the intermediate length to the maximum length)
The operation of moving the leg support 12 from the intermediate length shown in FIGS. 7 and 8 to the maximum length shown in FIGS. 5 and 6 is as follows.

  First, the second operation portion 62 of the second adjustment member 60 on the right side of the contact portion 70 is pressed to remove the second lock portions 640 and 650 from the second receiving holes 32 and 31 positioned below. In this state, the third cylindrical member 40 is pulled out to a desired position, and the hand is released from the second operation unit 62. The second operating portion 62 is returned to its original position by the urging force of the spring 614, and the pair of second lock portions 640 and 650 are located in the second receiving holes 32 and 31 located above the second cylindrical member 30. The relative movement between the second cylindrical member 30 and the third cylindrical member 40 is prohibited.

  When the child seat 100 is installed on the seat 1 of the car, the base member 10a is installed on the seat 1, according to the height from the floor surface 14, 15 of the automobile shown in FIG. First, the locked state of the first adjustment member 50 is released by the method described above, and the second tubular member 30 is locked with a desired pull-out length. If the length is still insufficient, the third tubular member 40 is locked with a desired pull-out length. Note that only the third cylindrical member 40 may be pulled out and locked. However, when only the third cylindrical member 40 is pulled out, the upper end portion 512 of the first connecting portion 51 and the support portion of the first vertical movement member 56 will be described. The first lock mechanism 53 cannot be used because it does not come into contact with 561. For this reason, it is desirable to first pull out the second tubular member 30 and pull out the third tubular member 40 when the length is insufficient.

  In the above embodiment, the first elongated holes 541 and 551 constituting the first motion converting element are provided in the first lock members 54 and 55, and the second elongated holes 641 constituting the second motion converting element. It has been described that 651 is provided on the second lock members 64 and 65. However, the first long holes 541 and 551 and the second long holes 641 and 651 do not need to be provided in the first lock members 54 and 55 and the second lock members 64 and 65, and the first lock members 54 and 55 are not provided. In addition, the second lock members 64 and 65 may be made of a different member.

  Moreover, although the 1st motion conversion element was provided in the upper end part of the 2nd cylindrical member 30, and the 2nd motion conversion member was provided in the upper end part of the 3rd cylindrical member 40, it is not limited. For example, the first motion conversion element may be provided at the lower end portion of the first cylindrical member 20, and the second motion conversion element may be provided at the lower end portion of the second cylindrical member 30.

  In addition, in the said embodiment, although the cross-sectional shape of the 1st-3rd cylindrical members 20, 30, and 40 was made into the substantially rectangular shape, other shapes, such as elliptical shape, may be sufficient.

  Moreover, in the said embodiment, although the three rod-shaped members which comprise a leg support were taken as the cylinder (tubular member), the member of a cross-sectional U shape etc. may be sufficient.

  In the above embodiment, the receiving holes 21, 22, 31, 32 are through holes, but the first receiving holes 21, 22 can be engaged with the first lock portions 540, 550, and the second receiving holes 31. , 32 may be recesses as long as they can engage with the second lock portions 640, 650.

  Further, the first lock portions 540 and 550 pass through the receiving holes 22 and 21 of the first cylindrical member 20, and the second lock portions 640 and 650 pass through the receiving holes 32 and 31 of the second cylindrical member 30. It is assumed that they are arranged at different positions in the week direction. However, the first receiving holes 21 and 22 and the second receiving holes 31 and 32 are not the same, and may be arranged at orthogonal positions.

  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.

  DESCRIPTION OF SYMBOLS 1 Seat, 10 Child seat main body, 10a Base member, 10b Seat main body, 12 Leg support, 13 Underfloor storage part, 14,15 Floor surface, 20 1st cylindrical member, 21,22 1st receiving hole, 30 2nd cylindrical shape Member, 31, 32 second receiving hole, 33, 34 through hole, 40 third cylindrical member, 41, 42 through hole, 50 first adjusting member, 51 first connecting portion, 52 first operating portion, 53 first Lock mechanism, 54, 55 First lock member, 56 First vertical movement member, 60 Second adjustment member, 61 Second connection portion, 62 Second operation portion, 63 Second lock mechanism, 64, 65 Second lock member , 66 Second vertically moving member, 70 Contact portion, 80 Indicator, 100 Child seat, 201, 301, 401 Front side surface, 202, 302, 402 Left side surface, 20 , 303, 403 Right side, 204, 304, 404 Rear side, 510 First body part, 511 lower end part, 512 upper end part, 513 opening, 514 spring, 520 pressing part, 521 rotating shaft, 522 pushing up part, 531 upper member 532 Spring, 540, 550 First lock portion, 541, 551 First elongated hole, 611 Lower end portion, 560 shaft, 561 Support portion, 610 Second main body portion, 614 Spring, 620 Press portion, 621 Rotating shaft, 622 Push up Part, 631 fixed shaft, 640, 650 second lock part, 641, 651 second long hole, 642, 652 side hole.

Claims (5)

A child seat body fixedly mounted on a car seat;
An upper end is connected to the front end of the child seat body, and a leg support whose height can be adjusted according to the distance from the child seat body to the floor of the automobile,
The leg support is connected to the front end of the child seat body and extends in a vertical direction, a second cylindrical member that is received in the first cylindrical member so as to be displaceable in the vertical direction, A third cylindrical member that is received in the second cylindrical member so as to be displaceable in the vertical direction; a contact portion that is connected to a lower end of the third cylindrical member and contacts the floor; and the first A first adjustment member for adjusting a pull-out length of the second tubular member from the tubular member, and a first adjustment member for adjusting a pull-out length of the third tubular member from the second tubular member. 2 adjustment members,
The first adjustment member is provided to be displaceable in the vertical direction within the third cylindrical member, and the first cylindrical member and the second cylindrical member are locked and unlocked according to the position thereof. A first connecting portion for switching to a first operating portion, and a first operating portion that is provided at the abutting portion and controls a vertical displacement of the first connecting portion,
The second adjusting member is provided so as to be vertically displaceable in the third cylindrical member, and the second cylindrical member and the third cylindrical member are locked and unlocked according to the position thereof. A child seat, comprising: a second connecting portion for switching to a second operating portion; and a second operating portion that is provided at the contact portion and controls a vertical displacement of the second connecting portion. The first tubular member is provided with a plurality of first receiving holes at intervals in the height direction,
The first adjustment member is switched between an engagement position fitted in the first receiving hole and a non-engagement position coming out of the first receiving hole in accordance with the displacement of the first connecting portion. Including the lock part,
The second cylindrical member is provided with a plurality of second receiving holes at intervals in the height direction,
The second adjustment member is switched between an engagement position fitted in the second receiving hole and a non-engagement position coming out of the second receiving hole in accordance with the displacement of the second connecting portion. The child seat according to claim 1, comprising a lock portion. The second cylindrical member is provided with a first motion conversion element that converts the vertical movement of the first connecting portion into the horizontal movement of the first lock member and transmits the movement to the first lock member.
The third tubular member is provided with a second motion conversion element that converts the vertical movement of the second connecting portion into the horizontal movement of the second lock member and transmits the movement to the second lock member. The child seat according to claim 2. The first motion conversion element includes a first elongated hole provided in the first locking member extending in an oblique direction, a first vertical movement member having a function as an axis located in the first elongated hole,
The second motion conversion element includes a second elongated hole provided in the second locking member and extending in an oblique direction, and a second vertical movement member having a function as an axis located in the second elongated hole. The child seat according to claim 2 or 3. The first connecting portion and the second connecting portion are provided to overlap in the width direction in the third tubular member,
The said 1st connection part is provided with the opening extended in an up-down direction, The said 2nd locking member is located in the said opening, and penetrates into the said 2nd receiving hole, The Claim 2 in any one of Claims 4-4 child seat.

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