JP6974559B2 - child seat - Google Patents

Description

The present invention relates to a child seat, in particular to a child seat having a leg support.

Conventionally, a leg support has been attached to the front end of the base member of the child seat to prevent the child seat from tilting forward and becoming unstable in the event of sudden braking or a forward collision. ..

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

For example, in Japanese Patent Application Laid-Open No. 2003-94994 (Patent Document 1), a leg support is formed of two members, an outer tube and an inner tube, and the height can be adjusted by a length adjusting member provided between the two members. Is disclosed. It is disclosed that the inner pipe is slid with respect to the outer pipe to adjust the pull-out length.

On the other hand, in Japanese Patent Application Laid-Open No. 2016-7933 (Patent Document 2), a first cylindrical member, a second tubular member, and a third tubular member are formed, and the first tubular member and the first tubular member are formed. The length adjustment between the two tubular members is adjusted by the first adjusting member provided between them, and the length adjustment between the second tubular member and the third tubular member is adjusted by the second adjusting member provided between them. Is disclosed.

Japanese Unexamined Patent Publication No. 2003-94994 (Patent No. 4898037) Japanese Unexamined Patent Publication No. 2016-7933

As mentioned above, the leg support has a height adjustment function and can be attached to many types of automobiles. The height of the leg support of Patent Document 1 can be adjusted by a length adjusting member provided between the outer tube and the inner tube. However, since the leg support of Patent Document 2 is provided with two length adjusting members, it may be difficult to decide which operating member to operate.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a child seat capable of easily adjusting the height of a leg support.

For this purpose, the child seat according to one aspect of the present invention has a child seat body fixedly mounted on the seat of an automobile and an upper end connected to the front end of the child seat body from the child seat body to the floor surface of the automobile. It is equipped with a leg support that can be adjusted in height according to the distance, and the leg support includes an upper tubular member and a lower tubular member that are slidably fitted in the vertical direction, and an upper tubular member and a lower tubular member. Includes an adjustment mechanism that locks the car seat at a predetermined height position, allows the lower tubular member to move downward, and prohibits the upward movement.

Preferably, the adjusting mechanism comprises a plurality of receiving holes provided in one tubular member at intervals in the height direction, and an engaging position provided in the other tubular member and engaged with the receiving holes. It includes an engaging member that can be switched to a non-engaging position that has come out of the receiving hole, and an operation unit that controls switching between the engaging position and the non-engaging position of the engaging member.

Preferably, the engaging member has an inclined portion that receives a load from above and switches to a non-engaging position.

Preferably, the receiving hole has an inclined portion that receives a load from above and switches to a non-engaged position.

Preferably, the upper tubular member is a first tubular member, and the lower tubular member is a second tubular member and a second tubular member that are vertically displaceably accepted in the first tubular member. Including a third tubular member that is displaceably accepted in the vertical direction, the adjusting mechanism includes a first adjusting mechanism for adjusting the withdrawal length of the second tubular member from the first tubular member. It includes a second adjusting mechanism for adjusting the withdrawal length of the third tubular member from the second tubular member.

For this purpose, the child seat according to one aspect of the present invention has a child seat body fixedly mounted on the seat of an automobile and an upper end connected to the front end of the child seat body from the child seat body to the floor surface of the automobile. It is equipped with a leg support that can be adjusted in height according to the distance, and the leg support includes an upper tubular member and a lower tubular member that are slidably fitted in the vertical direction, and an upper tubular member and a lower tubular member. The adjustment mechanism includes an adjustment mechanism that locks the car seat at a predetermined height position and a contact portion that is connected to the lower end of the lower tubular member and abuts on the floor surface. A plurality of receiving holes provided in the tubular member of the above, and an engaging member provided in the other tubular member and switched between an engaging position for engaging with the receiving hole and a non-engaging position provided in the receiving hole. And includes an operation unit provided in the contact portion and controlling switching between the engaged position and the non-engaged position of the engaging member, and a connecting member for operably connecting the engaging member and the operating portion. In the child seat according to one aspect of the present invention, the connecting member is a first moving member that switches the engaging member between the engaged position and the engaged position by moving in the vertical direction.

According to the present invention, it is possible to provide a child seat capable of easily adjusting the height of the leg support.

It is a perspective view which shows the child seat in embodiment of this invention. It is a schematic side view which shows the state which fixed the child seat in the embodiment of this invention on the seat of an automobile. It is a front view of the leg support of the maximum length in embodiment of this invention. It is a front view of the rest support which shows the state which accommodated the 3rd cylinder member in the 2nd cylinder 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 the 2nd cylindrical member is housed in the 1st tubular member from the state shown in FIG. It is a vertical sectional view of the leg support of FIG. It is sectional drawing which shows the VII part of FIG. 6 enlarged. It is sectional drawing which shows the VIII part of FIG. 6 enlarged. It is sectional drawing which shows the IX part of FIG. 6 enlarged. It is sectional drawing seen along the line XX of FIG. It is sectional drawing which shows the XI part of FIG. 10 enlarged. It is sectional drawing which shows the XII part of FIG. 10 enlarged. It is a vertical sectional view of the leg support of FIG. It is sectional drawing seen along the line XIV-XIV of FIG. It is a vertical sectional view of the leg support of FIG. It is sectional drawing seen along the line XVI-XVI of FIG. It is a front view which shows the state which operated the operation part from the state shown in FIG. It is a vertical sectional view of the leg support of FIG. It is sectional drawing which shows the XIX part of FIG. 18 enlarged. It is sectional drawing which shows the XX part of FIG. 18 enlarged. It is sectional drawing seen along the line XXI-XXI of FIG. It is sectional drawing which shows the XXII part of FIG. 21 enlarged. It is a front view which shows the state which operated the operation part from the state shown in FIG. It is a vertical sectional view of the leg support of FIG. 23. It is sectional drawing which shows the XXV part of FIG. 23 enlarged. It is sectional drawing seen along the line XXVI-XXVI of FIG. FIG. 6 is an enlarged cross-sectional view showing the XXVII portion of FIG. 26. It is sectional drawing of the leg support which shows the state which pulled out the 3rd tubular member from the state shown in FIG.

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

(Overview of child seats)
First, the outline of the child seat according to the present embodiment will be described with reference to FIGS. 1 and 2. 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 seen from the front of the automobile.

The child seat 100 includes a child seat main body 10 fixedly mounted on the seat 1 of an automobile, and a leg support 12 having an upper end connected to the front end of the child seat main body. The child seat body 10 may include a base member 10a on the seat 1 of an automobile and a seat body 10b mounted 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. 2, 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 the distance from the front lower end surface of the base member 10a to the bottom surface 15 of the underfloor storage portion 13. It is configured to be extendable to a length corresponding to h2. As a result, the leg support 12 can be installed on the bottom surface 15 of the underfloor storage portion 13.

(Structure of leg support)
A configuration example of the leg support 12 will be described in detail with reference to FIGS. 3 to 16. In the present embodiment, the bottom surface 15 of the underfloor storage portion 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 includes a first cylindrical member 20 that is connected to the front end of the base member 10a and extends in the vertical direction, and a second tubular member 30 that is vertically displaceably accepted in the first tubular member 20. Includes a third tubular member 40 that is vertically displaceably accepted within the second tubular member 30, and a contact portion 70 that connects to the lower end of the third tubular member 40. Further, the leg support 12 includes a first adjusting mechanism 50 for adjusting the withdrawal length of the second tubular member 30 from the first tubular member 20, and a third tubular member from the second tubular member 30. It includes a second adjusting mechanism 60 for adjusting the withdrawal length of the 40.

A pair of indicators 80 for confirming whether the leg supports 12 are securely installed on the floor surfaces 14 and 15 may be provided on the bottom surface of the contact portion 70.

FIG. 3 shows a leg support 12 having a maximum length in which both the second cylindrical member 30 and the third tubular member 40 are pulled out, and FIG. 5 shows the second tubular member 30 and the second tubular member 40. A minimum length leg support 12 indicating a state in which both of the third tubular members 40 are housed is shown. FIG. 4 shows a leg support 12 having a length (hereinafter referred to as “intermediate length”) in which only the second tubular member 30 is pulled out. Note that FIG. 28 shows a state in which the second tubular member 30 is housed in the first tubular member 20, but in the present embodiment, this state is also assumed to be an intermediate length. It is desirable that the height (length) of the leg support 12 can be adjusted within a range of at least 270 mm to 525 mm. Since the leg support 12 may be installed tilted backward on the floor surfaces 14 and 15 of the automobile, this range is not limited to the range corresponding to the vertical length as shown in FIG.

The first to third tubular members 20, 30, and 40 have, for example, a substantially rectangular cross section. Configuration examples of the first to third cylindrical members 20, 30, and 40 in this case are as follows.

The first cylindrical 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 cylindrical member 20 is provided with, for example, eight pairs of first receiving holes 21 and 22 at intervals in the height direction. One first 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 offset in the front-rear direction by the thickness of the first engaging members 51 and 52 described later.

The second cylindrical 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, 32 at intervals in the height direction. One second 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 offset in the front-rear direction by the thickness of the second engaging members 61 and 62 described later. Further, as shown in FIG. 7, a pair of through holes 33 and 34 are provided at positions of the upper ends of the left side surface 302 and the right side surface 303 facing each other.

The third cylindrical member 40 has a front side surface 401, a left side surface 402, a right side surface 403, and a rear side surface 404. As shown in FIG. 8, a pair of through holes 41 and 42 are provided at positions facing each other at the upper ends of the left side surface 402 and the right side surface 403.

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

The first adjusting mechanism 50 is provided between the first cylindrical member 20 and the second tubular member 30, and is used to adjust the withdrawal length of the second tubular member 30 from the first tubular member 20. It will be provided. That is, the first adjusting mechanism 50 has a function of adjusting the heights of the first tubular member 20 and the second tubular member 30. The first adjusting mechanism 50 functions in a state where the third cylindrical member 40 is received by the second tubular member 30. That is, the first adjusting mechanism 50 functions when the leg support 12 has the intermediate length shown in FIG. 4 and the minimum length shown in FIG. 5, and the maximum length shown in FIG. 3 and the intermediate length shown in FIG. 28. In that case it doesn't work. A configuration example of the first adjusting mechanism 50 will be described later.

The second adjusting mechanism 60 is provided between the second tubular member 30 and the third tubular member 40, and is used to adjust the withdrawal length of the third tubular member 40 from the second tubular member 30. It will be provided. That is, the second adjusting mechanism 60 has a function of adjusting the heights of the second tubular member 30 and the third tubular member 40. The second adjusting mechanism 60 functions regardless of whether the leg support 12 has the maximum length shown in FIG. 3, the intermediate length shown in FIG. 4 or 28, or the minimum length shown in FIG. .. A configuration example of the second adjusting mechanism 60 will be described later.

First, a configuration example of the first adjusting mechanism 50 will be described in detail with reference to FIGS. 6, 7, 10 and 11. The first adjusting mechanism 50 includes a plurality of first receiving holes 21 and 22 provided in the first cylindrical member 20, a pair of first engaging members 51 and 52, a first moving member 53, and a first fixing member. Including 54 and. The first adjusting mechanism 50 is provided at the upper end of the second tubular member 30.

The first engaging members 51 and 52 are provided in the second tubular member 30, and the engaging positions (FIGS. 7 and 11) for engaging with the first receiving holes 21 and 22 and the first receiving holes 21 and It is switched to the non-engagement position (FIGS. 25 and 27) which has escaped from 22. The first engaging members 51 and 52 are arranged symmetrically and are provided so as to overlap each other in the front-rear direction. The first engaging members 51 and 52 are switched between an engaged position and a non-engaged position according to the displacement of the first moving member 53.

As shown in FIGS. 7 and 11, the first engaging member 51 penetrates the flat plate-shaped first base body 510, the first elongated hole 511 provided in the first base body 510, and the first receiving hole 22. It has a first engaging portion 512 and the like.

The first elongated hole 511 is provided in a substantially central portion of the first base body 510. The first slot 511 is inclined diagonally downward toward the left side surface 302 of the second tubular member 30. The diagonal direction means a direction having a certain angle with respect to the vertical direction. The first engaging portion 512 has, for example, a pin shape and projects from the first base body 510 toward the right side surface 303 of the second tubular member 30. The upper portion of the first engaging portion 512 extends in a substantially horizontal direction, and the lower portion thereof has a first inclined portion 513 that inclines diagonally downward toward the inside of the second tubular member 30. The first engaging portion 512 switches between an engaged position fitted into the first receiving hole 22 and a non-engaged position exited from the first receiving hole 22 according to the displacement of the first moving member 53 described later. Will be. The first engaging portion 512 penetrates through the through hole 34 provided above the second tubular member 30 even in the non-engaged state. On the other hand, the first engaging portion 512 penetrates the first receiving hole 22 provided in the first tubular member 20 only in the engaged state.

As described above, the first engaging member 52 is arranged symmetrically with the first engaging member 51 and is provided so as to overlap each other in the front-rear direction. Similar to the first engaging member 51, the first engaging member 52 has a flat plate-shaped first base body 520, a first elongated hole 521 provided in the first base body 520, and a first receiving hole 22. It has a first engaging portion 522 that penetrates.

The first elongated hole 521 is provided in a substantially central portion of the first base body 520. The first elongated hole 521 is inclined diagonally downward toward the right side surface 303 of the second tubular member 30. The first engaging portion 522 has, for example, a pin shape and projects from the first base body 520 toward the left side surface 302 of the second tubular member 30. The upper portion of the first engaging portion 522 extends in a substantially horizontal direction, and the lower portion thereof has a first inclined portion 523 that inclines diagonally downward toward the inside of the second tubular member 30. The first engaging portion 522 has an engaging position that penetrates the first cylindrical member 20 and is fitted into the first receiving hole 21 according to the displacement of the first moving member 53, which will be described later, and the first receiving hole 21. It can be switched to the non-engaged position that has escaped from. The first engaging portion 522 penetrates the through hole 33 provided above the second tubular member 30 even in the non-engaged state. On the other hand, the first engaging portion 522 penetrates the first receiving hole 21 provided in the first tubular member 20 only in the engaged state.

The first moving member 53 is provided in the second tubular member 30, and by moving in the vertical direction, the first engaging members 51 and 52 are switched between the engaged position and the non-engaged position. The first moving member 53 has a first moving main body portion 530 and a first shaft 532 supported by the first moving main body portion 530.

As shown in FIGS. 10 and 11, the first moving main body portion 530 has a square-shaped side view, and has a first opening portion 531 that opens in the left-right direction at a substantially central portion. In the first opening 531 the first engaging members 51 and 52 are arranged so as to overlap each other in the front-rear direction. As shown in FIG. 7, the first shaft 532 penetrates the first slot 511,521 in the front-rear direction, respectively. Since the first moving main body portion 530 supports the first axis 532, the first shaft 532 also moves in the vertical direction with the movement of the first moving main body portion 530. As shown in FIG. 25, when the first moving main body portion 530 is pushed by the upper end portion 634 of the upward moving member 63 described below and moves upward, the first shaft 532 becomes the first engaging member 51, 52. It moves upward along the inclination of the first slot 511,521. As a result, the first engaging portion 512 is pulled out from the first receiving hole 22, and the first engaging portion 512 is pulled out from the first receiving hole 21 and switched to the non-engaging position.

As described above, the first slot 511,521 of the first engaging members 51 and 52 and the first axis 532 of the first moving member 53 have a function as a first motion conversion element. The first motion conversion element converts the vertical movement of the first moving member 53 into the horizontal movement of the first engaging members 51 and 52 and transmits it to the first engaging members 51 and 52.

The first fixing member 54 is fixed to the upper end of the second tubular member 30. As shown in FIGS. 7 and 11, the first fixing member 54 includes a support portion 540 provided at the upper end of the second tubular member 30, a main body portion 541 supported by the support portion 540, and a lower portion from the main body portion 541. It has a pair of protrusions 542 and 543 protruding from the surface. In particular, as shown in FIG. 11, a pair of first elastic members 55 and 56 are provided between the protrusions 542 and 543 and the first shaft 532. As a result, the first moving member 53 is urged downward. The first elastic members 55 and 56 are preferably coil springs, for example.

As shown in FIGS. 7 and 11, a stopper 23 is fixed to the lower end edge of the first cylindrical member 20. The stopper 23 is provided in order to prevent the second tubular member 30 from coming off from the first tubular member 20.

Next, the second adjusting mechanism 60 will be described in detail with reference to FIGS. 6, 8, 9, 10, and 12. The second adjusting mechanism 60 includes a plurality of second receiving holes 31 and 32 provided in the second tubular member 30, a pair of second engaging members 61 and 62, an upward moving member 63, and a second fixing member 64. It includes an upward elastic member 65, a downward moving member 66, an operating portion 67 provided in the contact portion 70, and a downward elastic member 68. The second adjusting mechanism 60 is provided at the upper end of the third cylindrical member 40.

The second engaging members 61 and 62 are provided in the third tubular member 40, and have an engaging position (FIGS. 8 and 12) for engaging with the second receiving holes 31 and 32, and the second receiving holes 31, It is switched to the non-engagement position (FIGS. 19 and 22) which has escaped from 32. The second engaging members 61 and 62 are arranged symmetrically and are provided so as to overlap each other in the front-rear direction. The second engaging members 61 and 62 are switched between the engaged position and the non-engaged position according to the displacement of the upward moving member 63, the downward moving member 66, and the operating portion 67.

As shown in FIGS. 8 and 12, the second engaging member 61 penetrates the flat plate-shaped second base body 610, the second elongated hole 611 provided in the second base body 610, and the second receiving hole 32. It has a second engaging portion 612 to be used.

The second slot 611 is provided in a substantially central portion of the second base body 610. The second slot 611 is inclined diagonally downward toward the left side surface 402 of the third tubular member 40. The second engaging portion 612 has, for example, a pin shape and projects from the second base body 610 toward the right side surface 403 of the third tubular member 40. The upper portion of the second engaging portion 612 extends in a substantially horizontal direction, and the lower portion thereof has a second inclined portion 613 that inclines diagonally downward toward the inside of the third tubular member 40. The second engaging portion 612 has an engaging position fitted into the second receiving hole 32 and a non-engaging portion coming out of the second receiving hole 32 according to the displacement of the upward moving member 63 and the downward moving member 66 described later. It can be switched to the position. The second engaging portion 612 penetrates the through hole 42 provided above the third tubular member 40 even in the non-engaged state. On the other hand, the second engaging portion 612 penetrates the second receiving hole 32 provided in the second tubular member 30 only in the engaged state.

As described above, the second engaging member 62 is arranged symmetrically with the second engaging member 61 and is provided so as to overlap each other in the front-rear direction. Similar to the second engaging member 61, the second engaging member 62 has a flat plate-shaped second base body 620, a second elongated hole 621 provided in the second base body 620, and a second receiving hole 31. It has a second engaging portion 622 that penetrates.

The second slot 621 is provided in a substantially central portion of the second base body 620. The second slot 621 is inclined diagonally downward toward the right side surface 403 of the third tubular member 40. The second engaging portion 622 has, for example, a pin shape and projects from the second base body 620 toward the left side surface 402 of the third tubular member 40. The upper part of the second engaging portion 622 extends in a substantially horizontal direction, and the lower part thereof has a second inclined portion 623 which is inclined diagonally downward toward the inside of the third tubular member 40. The second engaging portion 622 has an engaging position fitted into the second receiving hole 32 and a non-engaging portion coming out of the second receiving hole 32 according to the displacement of the upward moving member 63 and the downward moving member 66 described later. It can be switched to the position. The second engaging portion 622 penetrates the through hole 41 provided above the third tubular member 40 even in the non-engaged state. On the other hand, the second engaging portion 622 penetrates the second receiving hole 31 provided in the second tubular member 30 only in the engaged state.

As shown in FIGS. 6, 8, 10 and 12, the upward moving member 63 is located above the downward moving member 66 described below, and moves with the upward movement of the downward moving member 66. The upward moving member 63 is provided in the third tubular member 40, and by moving in the vertical direction, the second engaging members 61 and 62 are switched between the engaged position and the non-engaged position. The upward moving member 63 has an upward moving main body portion 630 and a second shaft 632 supported by the upward moving main body portion 630.

As shown in FIGS. 10 and 12, the upward moving main body portion 630 has a second opening 631 extending in the vertical direction and opening in the horizontal direction in the upward direction. The second engaging members 61 and 62 are arranged so as to overlap each other in the second opening 631. As shown in FIG. 8, the second shaft 632 penetrates the second slot 611, 621 in the front-rear direction, respectively. As shown in FIG. 9, since the upward moving main body portion 630 supports the second shaft 632, the second shaft 632 also has the second engagement member 61, 62 as the upward moving main body portion 630 moves. It moves upward along the inclination of the elongated holes 611 and 621. As a result, the second engaging portion 612 is pulled out from the second receiving hole 32, and the second engaging portion 612 is pulled out from the second receiving hole 31 and switched to the non-engaging position. In this case, the upper end portion 634 of the upward moving main body portion 630 projects upward from the third tubular member 40.

As described above, the second elongated holes 611 and 621 of the second engaging members 61 and 62 and the upward moving member 63 have a function as a second motion conversion element. The second motion conversion element converts the vertical movement of the upward moving member 63 into the horizontal movement of the second engaging members 61, 62 and transmits it to the second engaging members 61, 62.

As shown in FIG. 8, an outward protruding portion 633 that protrudes toward the side surface of the third tubular member 40 is formed below the upward moving main body portion 630. Above the outward protrusion 633, the upward elastic member 65 described below is arranged.

With reference to FIGS. 6, 8, 10 and 12, the second fixing member 64 is fixed to the upper end of the third tubular member 40. The second fixing member 64 has an upper cylindrical portion 640, a lower tubular portion 641 thinner than the upper tubular portion 640, and an inward protruding portion 643 provided at the lower end of the lower tubular portion 641. An upward elastic member 65 for urging the upward moving member 63 to a downward position is provided in the gap 642 formed by the lower tubular portion 641, the upward moving main body portion 630, and the outward protruding portion 633. As a result, the upward moving member 63 is urged downward. The inwardly projecting portion 643 abuts on the outwardly projecting portion 633 of the upwardly moving member 63, thereby prohibiting the upwardly moving member 63 from moving below the inwardly protruding portion 643. The upper elastic member 65 is preferably a coil spring, for example.

A stopper 33 is fixed to the lower end of the second tubular member 30. The stopper 33 is provided in order to prevent the third cylindrical member 40 from coming off from the second tubular member 30.

With particular reference to FIGS. 6, 9 and 10, the downward moving member 66 is located below the upward moving member 63. The downward movement member 66 moves in the vertical direction according to the operation of the operation unit 67. The downward moving member 66 is housed in the third tubular member 40 and has a rod-shaped member 660 extending in the vertical direction, a vertical elongated hole 662 provided at a lower position of the rod-shaped member 660, and a rod-shaped member 660 at a lower position. It has a downward elastic member 68 that urges. The downward moving member 66 and the contact portion 70 are fixed by a third shaft 45 shown in FIG.

As shown in FIG. 9, on the lower end edge of the rod-shaped member 660, a recess 661 that is recessed upward in a substantially central portion in the left-right direction, a left flat portion 664 extending from the recess 661 toward the left surface 402, and a recess 661. A right flat portion 665 extending toward the right side surface 403 is formed. As shown in FIG. 10, the rear lower end portion of the rod-shaped member 660 is a cavity penetrating in the front-rear direction, and the lower elastic member 68 is between the protrusion 666 and the third shaft 45 at the lower end portion. Is placed. As a result, the lower elastic member 68 is urged downward. That is, the operation unit 67 is urged to the state shown in FIGS. 3, 4, and 5. The lower elastic member 68 is preferably, for example, a coil spring. The urging force of the lower elastic member 68 has a certain urging force that can withstand the vibration applied to the vehicle body. As a result, it is possible to prevent the downward moving member 66 from moving upward due to the vibration applied to the vehicle body.

With particular reference to FIGS. 6, 9 and 10, the operation unit 67 has a lever unit 670 that rotates about the rotation shaft 671 and a rotation unit 672 that rotates with the lever unit 670.

The lever portion 670 is a portion that is manually rotated by the operator. The rotating portion 672 is located at the lower end of the downward moving member 66. As shown in FIG. 9, the rotating portion 672 has a semicircular shape when viewed from the front, and has a convex portion 673 corresponding to the concave portion 661 of the downward moving member 66 and a left flat portion 674 extending from the convex portion 673 toward the left side surface 402. It has a right flat portion 675 extending from the convex portion 673 toward the right side surface 403, and a downward projecting portion 679 connecting the left flat portion 674 and the right flat portion 675. In the rotating portion 672, the left flat portion 674 and the downward protruding portion 679 intersect to form the left corner portion 677, and the right flat portion 675 and the downward protruding portion 679 intersect to form the right corner portion 678.

Since the leg support 12 in the present embodiment can operate the first adjusting mechanism 50 and the second adjusting mechanism 60 with one operation unit 67, it is easy to adjust the height of the leg support 12 without hesitation. Can be done. Further, since the contact portion 70 is a portion that is always manually operated when the leg support 12 is installed, it is functional to provide the operation portion 67 on the contact portion 70. Further, since it is not necessary to provide a through hole in the thinnest third tubular member 40 and the downward moving member 66 is provided in the thinnest third tubular member 40 in the vertical direction, the third tubular member 40 is provided. Can be given sufficient strength. This makes it possible to improve safety while widening the height adjustment range of the leg support 12.

As described above, the first engaging portion 512,522 and the second engaging portion 612,622 extend in the horizontal direction at the upper side, and have the first inclined portion 513, 523 and the second inclined portion 613, 623 at the lower side. doing. As a result, the leg support 12 of the present embodiment cannot be reduced from the maximum length to the minimum length or the intermediate length when the operation unit 67 is not operated, but the minimum length or the intermediate length to the maximum length. It has a so-called one-way lock function that can be stretched. By having the one-way lock function, the operator can extend the leg support 12 only by grasping the contact portion 70 by hand and applying a downward force. As a result, the leg support 12 of the present embodiment has good operability and can be easily installed on the floor surfaces 14 and 15. Further, by increasing the urging force of the first elastic member 55 from the urging force of the upper elastic member 65, the second tubular member 30 to the second tubular member 30 rather than the second tubular member 30 being pulled out from the first tubular member 20. 3 It becomes easy to pull out the tubular member 40.

Even if the second adjusting mechanism 60 fails, the second engaging members 61 and 62 are maintained in the engaged position unless the operation unit 67 is operated. Therefore, even if an impact is applied to the vehicle body in a state where the second adjusting mechanism 60 has failed and the third tubular member 40 is completely received in the second tubular member 30, as shown in FIG. 4, the operation is performed. As long as the portion 67 is not operated, the second engaging members 61, 62 and the first engaging members 51, 52 are maintained in the engaged position, and thus are more excellent in safety. Further, when an impact is applied to the vehicle body in a state where the first adjusting mechanism 50 has failed and the second tubular member 30 is completely received in the first tubular member 20, as shown in FIG. 28. Is the same.

The operation of the second adjusting mechanism 60 will be described with reference to FIGS. 17 to 26.

First, when the lever portion 670 of the operation portion 67 is rotated in the direction shown in FIG. 17, the rotating portion 672 rotates about the rotation shaft 671 as shown in FIG. 20, and rotates as shown in FIGS. 18 and 20. The right corner portion 678 of the portion 672 abuts on the right flat portion 665 of the downward moving member 66, and the downward moving member 66 moves upward. As shown in FIG. 18, when the downward moving member 66 moves upward, the upper end portion of the downward moving member 66 comes into contact with the lower end portion of the upward moving member 63, and the upward moving member 63 is pushed upward. As a result, as shown in FIG. 19, the second shaft 632 moves upward along the inclination of the second slot 611, 621, and the second engaging members 61, 62 move from the second receiving holes 32, 31. It is pulled out. In this way, the second engaging members 61 and 62 are released from the engaged state with the second receiving holes 32 and 31. That is, the second cylindrical member 30 and the third tubular member 40 are in a non-engaged state. In this case, the upper end portion 634 of the upward moving member 63 moves upward and protrudes upward from the second tubular member 30.

When the lever portion 670 is released, the operation portion 67 and the downward moving member 66 return to the positions shown in FIGS. 6 and 10 by the urging force of the downward elastic member 68, and the second engaging members 61 and 62 move upward. It is penetrated through the first receiving holes 22 and 21 by the returning force of the elastic member 65. As a result, the first adjusting mechanism 50 is in an engaged state.

The operation of the first adjusting mechanism 50 will be described with reference to FIGS. 17 to 26.

First, when the leg support 12 is set to the intermediate length shown in FIG. 4 and the lever portion 670 of the operation portion 67 is rotated in the direction shown in FIG. 23, as shown in FIG. 20, the rotating portion 672 is centered on the rotation shaft 671. The right corner portion 678 of the rotating portion 672 abuts on the right flat portion 665 of the downward moving member 66, and the downward moving member 66 moves upward. As shown in FIGS. 24 to 27, as the downward moving member 66 moves upward, the upper end portion of the downward moving member 66 comes into contact with the lower end portion of the upward moving member 63, and the upper end portion 634 of the upward moving member 63 abuts. It is pushed upward and the first moving main body portion 530 of the first moving member 53 moves upward. As a result, as shown in FIG. 25, the first shaft 532 moves upward along the inclination of the first slot 511,521, and the first engaging members 51, 52 move from the first receiving holes 22, 21. It is pulled out. In this way, the first engaging members 51 and 52 are released from the engaged state with the first receiving holes 21 and 22. That is, the first cylindrical member 20 and the second tubular member 30 are in a non-engaged state. In this case, the second engaging members 61 and 62 are also released from the engaged state with the second receiving holes 31 and 32.

When the lever portion 670 is released, the operation portion 67 and the downward moving member 66 return to the positions shown in FIGS. 6 and 10 by the urging force of the downward elastic member 68, and the second engaging portions 612 and 622 move upward. The urging force of the elastic member 65 penetrates through the second receiving holes 31 and 32, and the first engaging portions 512 and 522 penetrate through the first receiving holes 21 and 22 by the urging force of the first elastic members 55 and 56. Will be done. As a result, the first adjusting mechanism 50 is in an engaged state.

(Operation when shifting the leg support from the maximum length to the minimum length)
The operation when shifting the leg support 12 from the maximum length shown in FIG. 3 to the minimum length shown in FIG. 5 is as follows.

First, the lever portion 670 of the leg support 12 having the maximum length is rotated in the direction indicated by the arrow in FIG. 17, and the second engaging portions 612 and 622 are moved from the second receiving holes 31 and 32 as shown in FIG. Displace to the unengaged position where it came out. In that state, an upward force is applied to accommodate the third cylindrical member 40 in the second tubular member 30 and displace it to the intermediate length shown in FIG. Further, when rotated in the direction indicated by the arrow in FIG. 23, as shown in FIGS. 24 to 27, the upward moving member 63 moves upward, and accordingly, the first moving member 53 moves upward. The first engaging portions 512 and 522 are displaced to the non-engaged positions protruding from the first receiving holes 21 and 22. In that state, a force can be further applied upward to shift to the minimum length shown in FIG.

(Operation when shifting the leg support from the minimum length to the maximum length)
The operation when shifting the leg support 12 from the minimum length shown in FIG. 5 to the maximum length shown in FIG. 3 is as follows.

The contact portion 70 of the leg support 12 having the minimum length shown in FIG. 5 is grasped by hand and a force is applied downward to pull out the third tubular member 40 from the second tubular member 30. The second adjusting mechanism 60 is fixed to the upper end of the third tubular member 40, and as shown in FIG. 18, the second adjusting mechanism 60 engages with the second receiving holes 31 and 32 of the second tubular member 30. Since the engaging portions 612 and 622 have the second inclined portions 613 and 623, the second tubular member 30 to the third cylinder are pulled downward with a force stronger than the urging force of the upper elastic member 65. The shape member 40 can be pulled out and transferred to the intermediate length shown in FIG. 28. Further, the contact portion 70 of the leg support 12 having an intermediate length shown in FIG. 28 is grasped by hand and a force is applied downward to pull out the second tubular member 30 from the first tubular member 20. Although the first adjusting mechanism 50 is fixed to the upper end of the second tubular member 30, the first engaging portions 512 and 522 that engage with the first receiving holes 21 and 22 of the first tubular member 20 are also fixed. Further, since the first inclined portion 513, 523 is provided, the second tubular member 30 is pulled out from the first tubular member 20 by pulling downward with a force stronger than the urging force of the first elastic member 55. The length can be changed to the maximum length shown in FIG.

When the child seat 100 is installed on the seat 1 of the car, the base member 10a is installed on the seat 1, and the height from the floor surfaces 14 and 15 of the automobile to the seat surface of the seat 1 is adjusted to FIG. The contact portion 70 of the leg support 12 having the minimum length shown may be grasped by hand and a force may be applied downward to pull out the third tubular member 40 from the second tubular member 30. If the length is still insufficient, the second cylindrical member 30 may be pulled out from the first tubular member 20. In the unlikely event that it is pulled out too much, the lever portion 670 of the operation portion 67 may be operated to lock it at a desired pull-out length. The indicator 80 confirms whether or not the leg support 12 is securely installed on the floor surfaces 14 and 15.

In the above embodiment, the first elongated holes 511,521 constituting the first motion conversion element are provided in the first engaging members 51 and 52, and the second elongated holes 611 constituting the second motion conversion element are provided. , 621 have been described as being provided on the second engaging members 61, 62. However, the first slot 511,521 and the second slot 611,621 do not need to be provided in the first engagement members 51, 52 and the second engagement members 61, 62, and the first engagement member does not have to be provided. It may be composed of a member different from 51, 52 and the second engaging member 61, 62.

Further, the first motion conversion element is provided at the upper end portion of the second tubular member 30, and the second motion conversion member is provided at the upper end portion of the third tubular member 40, but the present invention is not limited. For example, the first motion conversion element may be provided at the lower end of the first tubular member 20, and the second motion conversion element may be provided at the lower end of the second tubular member 30.

In the above embodiment, the cross-sectional shapes of the first to third tubular members 20, 30, and 40 are substantially rectangular, but other shapes such as an elliptical shape may be used.

Further, in the above embodiment, the three rod-shaped members constituting the leg support are assumed to be a cylindrical body (cylindrical member), but a member having a U-shaped cross section may be used.

Further, in the above embodiment, the receiving holes 21, 22, 31 and 32 are through holes, but the first receiving holes 21 and 22 can be engaged with the first engaging portions 512 and 522 and are the second receiving holes. The 31 and 32 may be recesses or the like as long as they can engage with the second engaging portions 612 and 622.

Further, the first engaging portions 512 and 522 penetrate the receiving holes 22 and 21 of the first tubular member 20, and the second engaging portions 612 and 622 receive the receiving holes 32 and 31 of the second tubular member 30. Although it is said that the direction of penetrating the cylinder is provided on the opposite surface, it may be provided at an orthogonal position.

Further, in the above embodiment, the upward moving member 63 and the downward moving member 66 are considered to be separate members, but may be formed of the same member (second moving member). In this case, the upper elastic member 65 and the lower elastic member 68 do not have to be provided respectively, and may be formed of the same member (second elastic member).

Further, it is assumed that the first inclined portion 513, 523 is formed in the first engaging portion 512, 522, and the second inclined portion 613, 623 is formed in the second engaging portion 612, 622. However, the first engaging portion 512,522 and the second engaging portion 612,622 may not be provided with an inclined portion. In that case, for example, the first receiving holes 21 and 22 and the second receiving holes 31 and 32 may be provided with inclined portions that incline downward inward.

Although the embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to that of the illustrated embodiment. It is possible to make various modifications and modifications to the illustrated embodiment within the same range as the present invention or within the same range.

1 seat, 10 child seat body, 10a base member, 10b seat body, 12 leg support, 13 underfloor storage, 14,15 floor surface, 20 first tubular member, 21,22 first receiving hole, 23,33 stopper, 30 2nd tubular member, 31, 32 2nd receiving hole, 33, 34, 41, 42 through hole, 40 3rd tubular member, 45 3rd axis, 50 1st adjustment mechanism, 51, 52 1st engagement Member, 53 1st moving member, 54 1st fixing member, 55, 56 1st elastic member, 60 2nd adjusting mechanism, 61, 62 2nd engaging member, 63 upward moving member, 64 2nd fixing member, 65 upward Elastic member, 66 downward moving member, 67 operation part, 68 downward elastic member, 70 contact part, 80 indicator, 100 child seat, 201,301,401 front side surface, 202,302,402 left side surface, 203,303,403 right side Surface, 204, 304, 404 Side surface, 510,520 1st base body, 511 and 521 1st slot, 512,522 1st engaging part, 513,523 1st inclined part, 530 1st moving body part, 531 1st opening, 532 1st shaft, 540 support, 541 main body, 542,543 protrusion, 610,620 2nd base body, 611,621 2nd slot, 612,622 2nd engagement part, 613 , 623 2nd inclined part, 630 upward movement main body part, 631 2nd opening part, 632 second axis, 633 outward protrusion part, 634 upper end part, 640 upper tubular part, 641 lower tubular part, 643 inward protrusion Part, 660 rod-shaped member, 661 concave part, 662 vertical slot, 664,674 left flat part, 665,675 right flat part, 666 protrusion, 670 lever part, 671 rotating shaft, 672 rotating part, 673 convex part, 677 Left corner, 678 Right corner 679 Downward protrusion.

Claims (3)

A child seat body that can be fixedly mounted on the seat of a car,
An upper end is connected to the front end of the child seat body, and a height-adjustable leg support is provided according to the distance from the child seat body to the floor surface of the automobile.
The leg support is
The first tubular member extending in the vertical direction and
A second tubular member that is vertically displaceably accepted in the first tubular member and
A third tubular member that is vertically displaceably accepted in the second tubular member and
A first adjusting mechanism for adjusting the withdrawal length of the second tubular member from the first tubular member, and
A second adjusting mechanism for adjusting the withdrawal length of the third tubular member from the second tubular member, and
Including a contact portion connected to the lower end of the third tubular member and abutting on the floor surface.
The first adjustment mechanism is
A plurality of first receiving holes provided in the first cylindrical member at intervals in the height direction, and
A first engaging member provided in the second tubular member and switched between a first engaging position engaged with the first receiving hole and a first non-engaging position exiting from the first receiving hole. Including and
The second adjustment mechanism is
A plurality of second receiving holes provided in the second tubular member at intervals in the height direction, and
A second engaging member provided in the third tubular member and switched between a second engaging position that engages with the second receiving hole and a second non-engaging position that has come out of the second receiving hole. Including and
The contact portion is provided with an operation unit that controls switching between the second engaging position and the second non-engaging position of the second engaging member.
By operating the operation unit in a state where the third tubular member is housed in the second tubular member, the first engaging member is moved to the first engaging position and the first non-engaging position. A child seat that can be switched. The first adjusting mechanism locks the first cylindrical member and the second tubular member at a predetermined height position, and allows the second tubular member to move downward while moving upward. Prohibit movement,
The second adjusting mechanism locks the second tubular member and the third tubular member at a predetermined height position, and allows the third tubular member to move downward while moving upward. The child seat according to claim 1 , which prohibits movement. Wherein the first engagement member receives a load from below, have a first inclined portion that switches to the first disengaged position,
The second engagement member receives a load from below, having a second inclined portion for switching to the second disengaged position, child seat according to claim 2.

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