CN108340815B - child safety seat - Google Patents

Abstract

The invention discloses a child safety seat, comprising: a seat body, a headrest and a height adjustment mechanism, a guide groove is arranged on the seat back, and sliding surfaces are respectively formed on both sides of the guide groove on the outer surface of the seat back, each There are multiple card slots on the sliding surface, and the headrest is arranged on the inner side of the seat back; the height adjustment mechanism includes: an operation part, a fixing part and an adjustment part, the operation part is connected with the headrest, and there is a chute on the operation part The upper surface and the lower surface of the slide groove extend away from each other in the direction toward the outer side of the seat back; the fixed part includes a slide plate and a guide block, the guide block is inserted into the guide groove and connected with the headrest, and the slide plate slides along the sliding surfaces on both sides The adjustment part includes: a lever, a boss and an elastic piece. The lever is engaged in the slots on both sides, the boss passes through the guide groove and is inserted into the chute, and the elastic piece is used to drive the boss to move toward the headrest. According to the child safety seat of the present invention, the structure is simple, the processing cost is low, and the adjustment is convenient.

Description

child safety seat

technical field

The invention relates to the field of child safety seats.

Background technique

Most of the headrests provided on current child safety seats are non-adjustable in height, which brings a lot of inconvenience to children of different ages. Some child safety seats are also equipped with a mechanism that can adjust the height of the headrest. In some adjustment mechanisms, the headrest can be directly stretched and set, and the friction force is used to stop the headrest. Such headrest adjustment is prone to failure. In the adjusting mechanism that also has, headrest utilizes bolt to be fixed at different heights of seat, and headrest adjustment is too troublesome.

Contents of the invention

The present application aims to solve the technical problems existing in the prior art, and therefore proposes a child safety seat, which can conveniently adjust the height of the headrest.

The child safety seat according to the present invention includes: a seat body, the seat body includes a seat and a seat back, the seat back has an inner surface and an outer surface, and the seat back is provided with a guide groove, the outer surface of the chair back is provided with a plurality of card slots arranged vertically; the headrest, the headrest is arranged on the inner surface of the chair back; the height adjustment mechanism, the height adjustment mechanism It includes: an operation part, the operation part is connected with the headrest, the operation part is provided with a sliding groove on the side facing the outer side of the seat back, and the upper surface and the lower surface of the sliding groove are facing the The direction of the outer side of the seat back extends away from each other; the fixing part is connected with the headrest and slides vertically along the guide groove; the adjusting part is movably arranged on the fixing part On the part, the adjusting part includes: a lever, a boss and an elastic member, the lever is engaged in the groove on both sides of the guide groove, and the boss is inserted into the guide groove through the guide groove. In the chute, the elastic member is used to constantly drive the protrusion to move toward the headrest.

According to the child safety seat of the embodiment of the present invention, the height of the headrest on the seat body is adjusted by setting a height adjustment mechanism. The height of the headrest can be adjusted, and the headrest can be better stuck on the seat body when the pulling is stopped, so that the height adjustment of the headrest is very convenient.

In some embodiments, the adjustment part further includes a roller, and the roller is provided at the end of the protrusion protruding into the slide groove.

In some embodiments, the fixing part is provided with a through guide hole, and the protrusion is telescopically arranged in the guide hole.

In some embodiments, the elastic member is a spring, the spring is arranged in the guide hole and covered on the boss, one end of the spring abuts against the fixing part and the other end abuts against on the boss.

In some embodiments, an end of the protrusion away from the headrest forms a bushing, and the bushing is detachably covered on the clamping rod.

In some embodiments, the fixing part includes a slide plate and a guide block, the guide block is provided on the side of the slide plate facing the headrest, the guide block is inserted into the guide groove and is in contact with the The headrests are connected, and the slide plate vertically slides along the guide groove, wherein the adjustment part is movably arranged on the guide block.

In some embodiments, the seat back is provided with a plurality of spaced apart guide grooves, and the fixing part is provided with a plurality of guide blocks respectively fitted in the plurality of guide grooves.

In some embodiments, the operating part is provided with the sliding slot corresponding to each of the guiding slots, and the adjusting part includes a plurality of the protrusions and elastic members corresponding to the plurality of sliding slots.

In some embodiments, a handle is provided on the top end of the operation part, and the slide groove is formed on the bottom end of the operation part.

In some embodiments, the headrest is provided with a fixing groove on the side facing the seat back, the operating part is arranged in the fixing groove, and the height adjustment mechanism further includes a slide cover, and the slide cover The cover is closed on the fixing groove, and the slide cover is located between the operation part and the seat back.

In some embodiments, the child safety seat further includes: a base, a rotating hole is arranged on the base; a seat adjustment mechanism, the seat adjustment mechanism includes: a turntable, the turntable is rotatably arranged on the turntable In the hole, the seat body is arranged on the turntable, and the rotating part between the seat body and the base only includes the turntable.

In some embodiments, the base is provided with a plurality of first gear holes arranged around the turntable; the seat adjustment mechanism further includes: a pull plate, the pull plate is arranged on the seat body and Between the turntables, the pull plate has a connecting end and a pulling end, the connecting end is connected to the seat body, a latch is provided on the pulling end, and the pulling end can be placed on the seat body Move up and down with the turntable, when the pulling end moves downward, it can drive the latch to be inserted into the first gear hole, and when the pulling end moves upward, it can drive the latch to be pulled out; The gear holding elastic member is arranged between the seat body and the pulling end to constantly drive the pulling end to move downward.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and understandable from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a three-dimensional structural schematic diagram of a child safety seat according to an embodiment of the present invention;

Fig. 2 is a three-dimensional structural schematic diagram of a seat body, a headrest, and a height adjustment mechanism according to an embodiment of the present invention;

Fig. 3 is an exploded schematic view of the seat body, the headrest, and the height adjustment mechanism in Fig. 2;

Fig. 4 is an enlarged schematic diagram of a part of the height adjustment mechanism;

5 is a side view of a seat body according to an embodiment of the present invention;

6 is a perspective view of a base and a seat adjustment mechanism according to an embodiment of the present invention;

7 is a perspective view of a base and a turntable according to an embodiment of the present invention;

Fig. 8 is a sectional view of the base and the turntable shown in Fig. 7;

Fig. 9 is a perspective view of a pull plate according to an embodiment of the present invention.

Reference signs:

Child safety seat 100,

Seat body 1, seat base 11, seat back 12, inner side S1 of the seat back, outer side S2 of the seat back, guide groove 13, card slot 14, first block 15, second block 16, slide rail 17 ,

Headrest 2, fixing groove 21,

Base 3, rotating hole 30, upper bottom case 31, lower bottom case 32, suspension plate 34, first gear hole 36, limit groove 37, second gear hole 38,

Height adjustment mechanism 4, operation part 41, chute 411, upper surface F1 of chute, lower surface F2 of chute, handle 412, fixing part 42, guide block 421, slide plate 422, guide hole 423, notch 424, adjustment part 43, clamping rod 431, boss 432, elastic member 433, roller 434, bushing 435, sliding cover 44,

Seat adjustment mechanism 5 , turntable 51 , stop block 511 , pull plate 52 , latch 521 , connecting end P1 , pulling end P2 , holding block 522 , plugging block 523 , gear holding elastic piece 53 , and slide block 54 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

A child safety seat 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

A child safety seat 100 according to an embodiment of the present invention, as shown in FIG. 1 , includes: a seat body 1 , a headrest 2 and a base 3 .

Specifically, the seat body 1 includes a seat 11 and a seat back 12. It can be understood that when the child safety seat 100 is in use, the child sits on the seat 11 and leans against the seat back 12, and the seat back 12 has an inner The side S1 and the outer side S2 , the leaning surface of the seat back 12 is the inner side S1 of the seat back 12 , and the surface of the seat back 12 opposite to the inner side S1 is the outer side S2 of the seat back 12 .

Referring to FIGS. 1-3 , the headrest 2 is arranged on the inner side S1 of the seat back 12 , and the child safety seat 100 also includes a height adjustment mechanism 4 for adjusting the height of the headrest 2 on the seat back 12 .

Specifically, as shown in FIG. 3 , the seat back 12 is provided with a guide groove 13 penetrating in the thickness direction, and the outer surface S2 of the seat back 12 forms sliding surfaces on both horizontal sides of the guide groove 13, and each sliding surface is provided with There are a plurality of card slots 14 arranged vertically.

As shown in FIGS. 2-4 , the height adjustment mechanism 4 includes: an operating part 41 , a fixing part 42 and an adjusting part 43 , the operating part 41 is connected to the headrest 2 , and the operating part 41 is on the side facing the outer surface S2 of the seat back 12 A sliding groove 411 is provided, and the upper surface F1 and the lower surface F2 of the sliding groove 411 extend away from each other in a direction toward the outer surface S2 of the seat back 12 . The fixed part 42 includes a slide plate 422 and a guide block 421. The guide block 421 is arranged on the side of the slide plate 422 facing the headrest 2 and connected with the headrest 2. The guide block 421 is inserted into the guide groove 13 and can slide up and down along the guide groove 13. , the sliding plate 422 can slide along the sliding surfaces on both sides of the guide groove 13 . The arrangement of the sliding plate 422 in this embodiment can make the contact area between the fixing part 42 and the seat back 12 of the seat body 1 large and slide smoothly, but the structure of the fixing part 42 in the embodiment of the present invention is not limited thereto. In other embodiments, The fixed part 42 can also only be provided with a guide block 421 that slides up and down along the guide groove 13 , which is equivalent to a structure in which the sliding plate 422 is removed from the fixed part 42 .

The adjustment part 43 is movably arranged on the fixed part 42. The adjustment part 43 includes: a clamping rod 431, a convex post 432 and an elastic member 433. Inserted into the slide groove 411 through the guide groove 13 , the elastic member 433 is used to constantly drive the protrusion 432 to move toward the headrest 2 . Here, "normal" refers to a normal state, and "constant driving" means that the elastic member 433 has a tendency to push the protruding post 432 in a certain direction.

Specifically, the operating part 41 and the fixing part 42 of the height adjustment mechanism 4 are connected to the headrest 2, and the operating part 41 can even be integrally formed on the headrest 2. When the headrest 2, the operating part 41 and the fixing part When one of the 42 is pulled up and down, the other two can slide up and down thereupon.

Here, since the fixed part 42 includes a slide plate 422 and a guide block 421, the guide block 421 is connected with the headrest 2, and the slide plate 422 slides along the sliding surfaces on both sides of the guide groove 13, so that the guide block 421 is connected between the headrest 2 and the slide plate 422 , the headrest 2 and the slide plate 422 are clamped on both sides of the seat back 12 . Since the guide block 421 in the fixing part 42 fits in the guide groove 13 on the seat back 12, when the height of the headrest 2 is adjusted, the headrest 2, the operating part 41 and the fixing part 42 all slide along the extending direction of the guide groove 13.

Because in the adjustment part 43, the clamping rod 431 is engaged in the clamping groove 14 on both sides of the guide groove 13, the protruding post 432 is inserted into the sliding groove 411 through the guiding groove 13, and the elastic member 433 is used to constantly drive the protruding post 432 toward the head. The pillow 2 moves, so the height adjustment mechanism 4 has two states, one is a height stable state, and the other is a height adjustment state.

When the height of the headrest 2 is stable, the elastic member 433 tightly buckles the protruding column 432 in the chute 411, and after the protruding column 432 is compressed (or tensioned) in the chute 411, the two ends of the locking rod 431 They can be tightly engaged in the card slots 14 on both sides of the guide slot 13, so that the headrest 2 cannot slide up and down.

When the headrest 2 (or the operation part 41 ) is pulled upward, the operation part 41 will move upward relative to the protrusion 432 of the adjustment part 43 , so that the protrusion 432 of the adjustment part 43 stops against the lower surface F2 of the slide groove 411 . During the upward movement of the operation part 41 , the protrusion 432 overcomes the elastic force of the elastic member 433 and is pushed outward by the lower surface F2 of the slide groove 411 . When the protrusion 432 is pushed out, the locking rod 431 of the adjustment part 43 is also pushed out of the locking slot 14 . Without the locking effect of the locking rod 431 , the fixing part 42 can slide upward along the sliding surface along with the headrest 2 . After stopping to pull the headrest 2 (or the operating part 41) upwards, the boss 432 is compressed (or tensioned) in the slide groove 411 by the elastic member 433 again, and the two ends of the locking rod 431 are also tightly engaged in the sliding groove 411. In the card slot 14, the headrest 2 can no longer be adjusted upwards.

Similarly, when the headrest 2 (or the operating part 41 ) is pushed down, the operating part 41 will move downwards relative to the protrusion 432 of the adjustment part 43 , so that the protrusion 432 of the adjustment part 43 stops against the top of the slide groove 411 on the surface F1. During the downward movement of the operating part 41 , the protrusion 432 overcomes the elastic force of the elastic member 433 and is pushed outward by the upper surface F1 of the slide groove 411 . When the protrusion 432 is pushed out, the locking rod 431 of the adjustment part 43 is also pushed out of the locking groove 14 , and the fixing part 42 can slide down along the sliding surface along with the headrest 2 . After the headrest 2 (or the operating part 41 ) is stopped, the boss 432 is compressed (or tensioned) in the chute 411 by the elastic member 433 again, and the two ends of the clamping rod 431 are also tightly clamped respectively. Closed in the card slot 14, so that the headrest 2 can no longer be adjusted downwards.

According to the child safety seat 100 of the embodiment of the present invention, the height of the headrest 2 on the seat body 1 is adjusted by setting the height adjustment mechanism 4, the overall structure of the child safety seat 100 is simple, the processing cost is low, and only need to pull the head The pillow 2 or the operating part 41 can adjust the height of the headrest 2, and the headrest 2 can be better stuck on the seat body 1 when the pulling is stopped, so that the height adjustment of the headrest 2 is very convenient.

Specifically, as shown in FIGS. 2-4 , the seat back 12 is provided with a plurality of spaced apart guide grooves 13 , and the fixing portion 42 is provided with a plurality of guide blocks 421 fitted in the plurality of guide grooves 13 respectively. The guiding effect of the plurality of guide blocks 421 can make the headrest 2 be balanced in the horizontal direction, and slide smoothly when the height is adjusted.

In some specific embodiments, as shown in FIGS. Each sliding surface is provided with a plurality of slots 14 evenly spaced along the vertical direction. As shown in Figure 3, the chair back 12 is provided with two vertically extending guide grooves 13, and the chair back 12 is also provided with three rows of vertically arranged card slot columns, each of which includes a plurality of card slots extending laterally. Slot 14.

In this embodiment, the plurality of draw-in slots 14 in each draw-in slot row are parallel to each other, and the plurality of draw-in slots 14 in the three draw-in slot columns are arranged in one-to-one correspondence, that is, the heights of the three draw-in slots 14 in the same row are the same .

In some embodiments, as shown in Fig. 2 and Fig. 3, the operating part 41 is fixedly connected to the back of the headrest 2, and the operating part 41 is formed in the shape of a long straight plate. Formed at the bottom end of the operation portion 41 . In this way, when the height of the headrest 2 is adjusted, the handle 412 can be directly pulled up and down, making the operation easier.

Specifically, as shown in Figure 3, when the seat back 12 is provided with a plurality of guide grooves 13, the operating part 41 can be provided with a slide groove 411 corresponding to each guide groove 13, and the adjustment part 43 can be provided corresponding to a plurality of slide grooves 411. A plurality of protrusions 432 and a plurality of elastic members 433 . This can ensure that when the height of the headrest 2 is adjusted, the headrest 2 is evenly stressed in the horizontal direction and moves smoothly.

In the embodiment shown in Fig. 4, two sliding grooves 411 may be provided at the bottom of the operating part 41. Specifically, a square block is formed at the bottom of the operating part 41, and sliding grooves 411 are formed on the left and right sides of the square block. The chute 411 on the left side is open, and the chute 411 on the right side is open on the right side.

Further, as shown in FIG. 3 , the headrest 2 is provided with a fixing groove 21 on the side facing the seat back 12 , and the operating part 41 is arranged in the fixing groove 21 . In this way, when the headrest 2 slides, the operation part 41 does not interfere.

Specifically, as shown in FIG. 2 and FIG. 3 , the height adjustment mechanism 4 further includes a sliding cover 44 that covers the fixing groove 21 and is located between the operating portion 41 and the seat back 12 . As can be seen from Fig. 3, the surface of the slide cover 44 facing the seat back 12 is a smooth surface, and the setting of the slide cover 44 can reduce the friction between the operation part 41 and the seat back 12 when the headrest 2 is adjusted, so that the headrest 2 The height adjustment is more labor-saving.

In some embodiments, as shown in FIGS. 2-4 , the adjusting part 43 includes: a locking rod 431 , a boss 432 , an elastic member 433 and a roller 434 . There can be one or more protrusions 432 , and each protrusion 432 is provided with an elastic member 433 and a roller 434 .

Wherein, the clamping rod 431 can be a long straight round rod, and the vertical sections of all the clamping grooves 14 on the seat body 1 are semicircular. The radii are substantially equal, so that when the clamping rod 431 slides into or slides out of the clamping slot 14, it is relatively gentle, which can avoid the phenomenon that the clamping rod 431 is stuck.

Specifically, as shown in FIG. 4 , an end of the boss 432 away from the headrest 2 forms a bushing 435 , and the bushing 435 is detachably covered on the clamping rod 431 , which facilitates the assembly of the adjusting part 43 .

More specifically, as shown in FIG. 4 , the other end of the boss 432 is provided with a roller 434 , that is, the roller 434 is located at the end of the boss 432 extending into the chute 411 , so that when the headrest 2 is adjusted up and down, the roller 434 434 can slide along the lower surface F2 or the upper surface F1 of the chute 411, and the setting of the roller 434 can convert the sliding friction between the boss 432 and the surface of the chute 411 into rolling friction, so that the height adjustment of the headrest 2 can be more easily adjusted. Smooth and effortless.

In some specific embodiments, as shown in FIG. 4 and FIG. 2 , the guide block 421 is provided with a through guide hole 423 , and the protrusion 432 is telescopically arranged in the guide hole 423 . This can limit the range of motion of the adjusting part 43 on the fixing part 42, and ensure that when the headrest 2 moves up and down, the protruding post 432 of the adjusting part 43 expands and contracts along the extension direction of the guide hole 423, thereby improving the structural reliability of the adjustment of the headrest 2. sex.

Specifically, the elastic member 433 is a spring. The spring is disposed in the guide hole 423 and covers the boss 432 . One end of the spring abuts on the guide block 421 and the other end of the spring abuts on the boss 432 . Cover the boss 432 with a spring and use the spring to drive the boss 432 to move. On the one hand, it can ensure that the elastic member 433 does not fall off from the boss 432. On the other hand, it can also ensure that the elastic force of the elastic member 433 is large and stable, so that It is ensured that the structural reliability of the adjusting part 43 is high.

More specifically, as shown in FIG. 4 and FIG. 3 , the upper end of each guide block 421 on the fixed part 42 exceeds the upper end of the slide plate 422 , and the guide block 421 forms a gap 424 on the side away from the headrest 2 at the upper end, and the adjustment part 43 The clamping rod 431 is clamped in the notch 424, and the vertical section of the notch 424 is arc-shaped. The vertical section of the shaft sleeve 435 is circular, and the shaft sleeve 435 is located in the notch 424. Regardless of whether the boss 432 is loosened or tightened by the elastic member 433, the shaft sleeve 435 can be firmly located in the notch 424 without being skewed and stuck. .

As shown in FIG. 4 , the guide block 421 is provided with a guide hole 423 at a place corresponding to the notch 424 , and the guide hole 423 penetrates the guide block 421 in a direction toward the headrest 2 . The guide hole 423 includes a large hole section and a small hole section (not shown in the figure). The part of the guide hole 423 away from the headrest 2 is a small hole section, and the part adjacent to the headrest 2 in the guide hole 423 is a large hole section. A step is defined between the segment and the aperture segment. The spring is arranged in the large hole section, one end of the spring stops against the above-mentioned step, and the other end of the spring stops against the end of the setting roller 434 of the boss 432 .

In some embodiments, as shown in FIGS. 6 and 7 , the base 3 of the child safety seat 100 is provided with a circular turning hole 30 , and the child safety seat 100 also includes a seat adjustment mechanism 5 . 5 includes a turntable 51, which is rotatably arranged in the turn hole 30, the seat body 1 is arranged on the turntable 51, and the rotating part between the seat body 1 and the base 3 only includes the turntable 51.

It can be understood that, in the existing child safety seat, if the seat body can rotate relative to the base, a rotating shaft is provided between the seat body and the base. The rotating shaft is thinner, and the cross-sectional area of the rotating shaft is usually less than one-tenth of the seat area of the seat body. The torque and bending moment of the thinner rotating shaft are too large, and the rotating shaft is easy to break or deform, causing the seat body to be easily stuck. Dead and unable to turn.

Some child safety seats are not only equipped with a rotating shaft, but also a turntable is arranged above the rotating shaft. When the seat is turned, the rotating shaft is used as the main rotating support part, and the turntable is used as the auxiliary supporting part, which leads to a complicated seat structure and high cost. .

In the embodiment of the present invention, by setting the turntable 51 between the seat body 1 and the base 3, the cross-sectional area of the turntable 51 is greater than or equal to one-tenth of the area of the seat 11, and the turntable 51 has a large area and a strong load-bearing capacity. It is not easy to be damaged or skewed or stuck, and it rotates smoothly and has high reliability. Moreover, since the cross-sectional area of the turntable 51 is relatively large, the machining precision is relatively low, thereby reducing the machining cost.

In some specific examples of the present invention, the cross-sectional area of the turntable 51 is about 1/5 to 1/3 of the projected area of the seat 11 on the horizontal plane. Preferably, the cross-sectional area of the turntable 51 is about 1/4 of the projected area. Here, the cross-sectional area of the turntable 51 refers to the area of the turntable 51 on a cross section perpendicular to its rotation axis.

In some embodiments, as shown in FIG. 8 , the base 3 includes: an upper bottom case 31 and a lower bottom case 32 , the lower bottom case 32 covers the bottom of the upper bottom case 31 , and the upper bottom case 31 and the lower bottom case 32 The space is limited for installation. This hollow shell structure can reduce the weight of the base 3 and the cost of material processing.

Specifically, as shown in FIG. 8 , the rotating hole 30 is provided on the upper bottom case 31 , the bottom end of the turntable 51 protrudes into the installation space, and part of the bottom end of the turntable 51 is supported on the lower bottom case 32 .

It should be noted that, in the prior art, when the seat body is connected to the base through a rotating shaft, the contact stress at the joint between the rotating shaft and the base is relatively large, and it is necessary to install a special shaft seat on the base, or to connect the bearing between the rotating shaft and the base. . However, the arrangement of the bearing increases the number of parts, and the structure of the base at the place where the bearing is installed is complicated, and the cost increases.

However, in the embodiment of the present invention, since the cross-sectional area of the turntable 51 is relatively large, the extruding stress at the joint between the turntable 51 and the base 3 is relatively small, so the turntable 51 can be directly placed on the base 3, which not only saves the number of parts, but also simplifies the seat. This is also a major advantage of the child safety seat 100 in the embodiment of the present invention.

Specifically, as shown in Figure 8, the base 3 also includes a suspension plate 34, which is arranged in the installation space, and a suspension space is defined between the suspension plate 34 and the upper bottom case 31, and part of the edge of the turntable 51 is sandwiched between the suspension inside the space. This means that the lower bottom shell 32 provides part of the supporting force for the turntable 51, and the other part of the supporting force is provided by the upper bottom shell 31. After the support force on the turntable 51 is dispersed, it is beneficial to improve the stability of the overall support.

In some embodiments, as shown in FIG. 8 , a stopper 511 is provided on the turntable 51 , and the stopper 511 is arranged in the installation space and stops on the upper bottom shell 31 .

Specifically, an annular stopper 511 is provided on the outer periphery of the turntable 51, and the turntable 51 extends into the turn hole 30 from below the upper bottom case 31, and then the turntable 51 is locked on the upper bottom case 31 by the stopper 511, Prevent the turntable 51 from coming out of the upper bottom case 31 entirely.

In some embodiments, as shown in FIG. 7 , the base 3 is provided with a plurality of first gear holes 36 arranged around the turntable 51 .

As shown in Figure 6, the seat adjustment mechanism 5 also includes: a pull plate 52 and a gear holding elastic member 53, the pull plate 52 is arranged between the seat body 1 and the turntable 51, as shown in Figure 9 and Figure 6, pull The plate 52 has a connecting end P1 and a pulling end P2, the connecting end P1 is connected with the seat body 1, the pulling end P2 is provided with a latch 521, the pulling end P2 can move up and down between the seat body 1 and the turntable 51, when pulling When the end P2 moves downward, it can drive the latch 521 to be inserted into the first gear hole 36 , and when the pulling end P2 moves upward, it can drive the latch 521 to be pulled out. The gear holding elastic member 53 is arranged between the seat body 1 and the pulling end P2 to normally drive the pulling end P2 to move downward. Here, "normal" refers to the normal state, and "normal driving" means that the gear holding elastic member 53 has a tendency to push the pulling plate 52 towards a certain direction.

In this way, when the seat body 1 needs to rotate an angle, the pulling end P2 of the pull plate 52 can be pulled upwards, so that the latch 521 on the pulling end P2 can be pulled out from a first gear hole 36 on the base 3, and then the pulling end P2 can be pulled out. Pulling the end P2 can drive the entire seat body 1 to rotate and adjust its angle. When the seat body 1 is adjusted to the required angle, the pulling end P2 can be released, and the pulling end P2 moves downward under the action of the gear holding elastic member 53, and the pulling end P2 drives the latch 521 to insert into another first gear hole 36 in. Under the elastic pressure of the gear holding elastic member 53 , the latch 521 is not easy to escape from the first gear hole 36 , so that the seat body 1 can maintain the angle state.

It can be understood that the multiple first gear holes 36 on the base 3 are located on the rotation track of the latch 521, so that when the seat body 1 rotates, the latch 521 can be inserted into the appropriate first gear hole 36 position.

Only one latch 521 is provided on the pull plate 52 in FIG. The location fits it.

Specifically, as shown in Figure 9 and Figure 6, the pull plate 52 is provided with a holding block 522, the holding block 522 can be in the shape of a cross, the gear holding elastic member 53 can be a spring, and the bottom end of the spring is covered on the holding block 522 And the upper end stops against the seat 11 of the seat body 1 .

Further, as shown in FIG. 6, the bottom of the seat body 1 is provided with a first block 15 and a second block 16. As shown in FIGS. 15 and the insertion block 523 between the second clamping block 16, so that when the pulling plate 52 is pulled and pushed, the front and rear angles of the seat body 1 can be adjusted. In addition, the pull plate 52 is detachably connected to the seat body 1 , which facilitates the disassembly and storage of the child safety seat 100 .

In some embodiments, as shown in FIG. 1 , a slide rail 17 is provided on the seat body 1. As shown in FIG. The chair body 1 is slidably arranged on the turntable 51 through the cooperation of the slider 54 and the slide rail 17 . Such setting can adjust the position of the seat body 1 relative to the turntable 51, making the adjustment direction of the seat body 1 more diverse and more comfortable to use.

Specifically, as shown in the figure, the seat 11 of the seat body 1 has a certain radian, and the slide rail 17 extends along the length direction of the seat body 1. When the slide block 54 slides relative to the slide rail 17, the seat can be adjusted The inclination angle of the backrest of the chair body 1 makes it more comfortable and safe for children to use.

Specifically, as shown in FIG. 7 , the base 3 or the turntable 51 is provided with a second gear hole 38 , and when the seat body 1 slides, the latch 521 on the pull plate 52 can be positioned between the first gear hole 36 and the second gear hole 38 . Switch between gear hole 38.

In this way, when the position of the seat body 1 needs to be adjusted, the latch 521 can be switched from a plurality of first gear holes 36, and the latch 521 can also be switched from between the first gear hole 36 and the second gear hole 38. When there are multiple second gear holes 38, the latch 521 can also switch between multiple second gear holes 38.

If the second gear hole 38 and one of the first gear holes 36 are located on the same straight line parallel to the extending direction of the slide rail 17, when the latch 521 snaps into the first gear hole 36, the pull plate The pull end P2 of 52 is pulled upwards, so that the latch 521 on the pull end P2 is pulled out from the first gear hole 36, and then the pull end P2 is pulled along the extension direction of the slide rail 17, thereby driving the entire seat body 1 to slide, Adjust its position. When the seat body 1 is adjusted to the desired position, the pull end P2 can be released, and the pull end P2 moves downward under the action of the gear holding elastic member 53, and the pull end P2 drives the latch 521 to be inserted into the second gear hole 38 . Under the elastic pressure of the gear holding elastic member 53 , the latch 521 is not easy to escape from the second gear hole 38 , so that the seat body 1 can maintain this position.

It can be understood that one or more second gear holes 38 can be provided on the base 3 or the turntable 51, and the second gear holes 38 are located on the moving track of the latch 521, so that when the seat body 1 slides, The latch 521 can be inserted into a suitable second gear hole 38 for positioning.

Specifically, the seat body 1 is provided with a through groove penetrating in the thickness direction to form the slide rail 17 , and the slider 54 is locked in the through groove. The slide rail 17 and the slide block 54 arranged in this way have a simple structure and low manufacturing cost.

Specifically, as shown in FIG. 6 , the slider 54 is formed in a strip shape, and the cross section of the slider 54 perpendicular to the length direction is T-shaped. The seat body 1 is provided with a strip-shaped through-slot, and the through-slot is in the The section perpendicular to the length direction is a T-shape suitable for the slider 54 .

Specifically, as shown in FIGS. 6 and 7 , the base 3 is provided with a limiting groove 37 for limiting the sliding range of the second block 16 . The setting of the limiting groove 37 can limit the sliding of the seat body 1 relative to the base 3 . range, to avoid the phenomenon of jamming caused by excessive sliding range.

The structure of a child safety seat 100 in a specific embodiment will be described below with reference to FIGS. 1-9 .

As shown in FIG. 1 , a child safety seat 100 includes a headrest 2 , a seat body 1 and a base 3 .

As shown in Figures 1-4, the child safety seat 100 also includes a height adjustment mechanism 4, and the height adjustment mechanism 4 includes an operation part 41, an adjustment part 43 and a fixing part 42; The adjusting part 43 is telescopically arranged in the fixing part 42; the back of the seat body 1 is provided with a plurality of draw-in grooves 14 parallel to each other.

A handle 412 is provided at the upper end of the operation part 41 , and a sliding slot 411 is provided at the lower end.

The adjustment part 43 includes a clamping rod 431 extending laterally, a boss 432, a roller 434 and a spring; one end of the boss 432 is a bushing 435, and the other end is connected to the roller 434, and the spring is inserted into the boss 432 and then stretched into the boss 432, and connected In the concave hole at the end of the roller, the clamping rod 431 passes through the bushing 435 and engages with the clamping groove 14 .

The fixing part 42 is provided with a through guide hole 423 , and the protrusion 432 of the adjustment part 43 passes through the guide hole 423 and matches with the slide groove 411 at the lower end of the operation part 41 .

The lifting principle of the headrest 2 is as follows: pull the handle 412 on the upper end of the operating part 41 to lift or press down, and the roller 434 can move along the upper or lower slope of the chute 411 at the lower end of the operating part 41, thereby squeezing the spring and pushing the convex column 432 drives the clamping rod 431 to disengage from the clamping slot 14. When the headrest 2 is lifted up or pressed down to a suitable height, the clamping rod 431 is clamped into the clamping slot 14 again. The adjustment of the head restraint 2 can be realized only by lifting up or pushing down without additional operations.

As shown in FIGS. 6-9 , a seat adjustment mechanism 5 is provided between the base 3 and the seat body 1 , and the seat adjustment mechanism 5 includes: a turntable 51 , a pull plate 52 and a spring.

The turntable 51 is sheathed in the middle of the base 3 , so the seat body 1 can rotate relative to the base 3 without a rotating shaft, which is sliding friction.

The turntable 51 is provided with a T-shaped post 432 , a pull plate 52 and a spring; the lower end of the pull plate 52 is provided with a latch 521 ;

A plurality of first shift holes 36 are arranged on the surface of the base 3 , and the first shift holes 36 are arranged on the movement track of the latch 521 .

The bottom of the seat body 1 is provided with an arc-shaped through groove, the first block 15 and the second block 16; the arc-shaped through groove is sleeved on the T-shaped slide block 54, and can slide along the T-shaped slide block 54, the seat The chair body 1 can rotate together with the turntable 51; the second block 16 cooperates with the limit groove 37, so that the pull plate 52 drives the seat body 1 to slide along the slider 54 when it moves back and forth, and cannot slide backwards. Beyond the range limited by the limit groove 37.

Seat gear adjustment principle: When the gear position needs to be adjusted, press the pull end P2 of the pull plate 52 upward, and the latch 521 at the lower end of the pull plate 52 will disengage from the first gear hole 36 or the second gear hole 38 on the base 3 , rotate or pull the pull plate 52 back and forth to a suitable position, so that the latch 521 blocks the first gear hole 36 or the second gear hole 38 at the corresponding position. After releasing the hand, under the elastic force of the spring, the pull plate 52 The position is fixed.

In this embodiment, four first gear holes 36 are symmetrically arranged on the circular track of the latch 521, and two second gear holes 36 opposite to one of the first gear holes 36 are arranged on the forward and backward movement track of the latch 521. Gear hole 38.

In describing the present invention, it should be understood that the terms "center", "transverse", "length", "thickness", "upper", "lower", "front", "rear", "left", " The orientation or positional relationship indicated by "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" is Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the description of this specification, a description referring to the terms "embodiment", "example" and the like means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (12)

1. A child safety seat, comprising:

the seat comprises a seat body and a seat back, wherein the seat back is provided with an inner side surface and an outer side surface, a guide groove penetrating in the thickness direction is formed in the seat back, and a plurality of clamping grooves vertically distributed are formed in the outer side surface of the seat back;

the headrest is arranged on the inner side surface of the chair back;

a height adjustment mechanism, the height adjustment mechanism comprising:

an operation portion connected to the headrest, the operation portion being provided with a chute on a side toward an outer side face of the seatback, an upper surface and a lower surface of the chute extending away from each other in a direction toward the outer side face of the seatback;

the fixing part is connected with the headrest and vertically slides along the guide groove;

an adjusting portion movably provided on the fixing portion, the adjusting portion including: the clamping rod is clamped in the clamping grooves at two sides of the guide groove, the convex columns penetrate through the guide groove and are inserted into the sliding grooves, and the elastic piece is used for normally driving the convex columns to move towards the headrest;

when the operation part moves upwards relative to the convex column of the adjustment part, the convex column is enabled to be stopped against the lower surface of the chute, and in the upward movement process of the operation part, the convex column is ejected outwards by the lower surface of the chute against the elastic force of the elastic piece, so that the clamping rod of the adjustment part is ejected outwards of the clamping groove;

when the operation part is pressed downwards to enable the convex column of the adjustment part to move downwards relative to the convex column of the adjustment part, the convex column is enabled to be abutted against the upper surface of the chute, and in the downward movement process of the operation part, the convex column is ejected outwards by the upper surface of the chute against the elastic force of the elastic piece, so that the clamping rod of the adjustment part is ejected outwards of the clamping groove;

when the upward pulling and the downward pressing are stopped, the convex column is pressed in the sliding groove by the elastic piece, and the clamping rod is clamped in the clamping groove.

2. The child safety seat according to claim 1, wherein the adjustment portion further comprises a roller provided at an end of the post that extends into the chute.

3. The child safety seat according to claim 1, wherein the fixing portion is provided with a through guide hole, and the boss is telescopically provided in the guide hole.

4. A child safety seat according to claim 3, wherein the resilient member is a spring provided in the guide hole and sleeved on the boss, one end of the spring abutting on the fixing portion and the other end abutting on the boss.

5. The child safety seat according to claim 1, wherein an end of the post remote from the headrest forms a sleeve that is removably sleeved over the clip.

6. The child safety seat according to claim 1, wherein the fixing portion includes a slide plate and a guide block provided at a side of the slide plate facing the headrest, the guide block being inserted into the guide groove and connected to the headrest, the slide plate vertically sliding along the guide groove, wherein the adjusting portion is movably provided on the guide block.

7. The child safety seat according to claim 6, wherein the seatback is provided with a plurality of spaced apart guide grooves, and the fixing portion is provided with a plurality of guide blocks fitted in the plurality of guide grooves, respectively.

8. The child safety seat according to claim 7, wherein the operating portion is provided with the slide grooves corresponding to each of the guide grooves, and the adjusting portion includes a plurality of the bosses and elastic members corresponding to a plurality of the slide grooves.

9. The child safety seat according to claim 1, wherein a handle is provided at a top end of the operating portion, and the chute is formed at a bottom end of the operating portion.

10. The child safety seat according to claim 1, wherein the headrest is provided with a fixing groove on a side facing the seatback, the operating portion is provided in the fixing groove, the height adjusting mechanism further comprises a slide cover that is covered on the fixing groove, and the slide cover is located between the operating portion and the seatback.

11. The child safety seat according to any one of claims 1-10, further comprising:

the base is provided with a rotating hole;

a seat adjustment mechanism, the seat adjustment mechanism comprising: the rotary table is rotatably arranged in the rotary hole, the seat body is arranged on the rotary table, and the rotary part between the seat body and the base only comprises the rotary table.

12. The child safety seat according to claim 11, wherein the base is provided with a plurality of first gear holes disposed around the turntable;

the seat adjustment mechanism further includes:

the pulling plate is arranged between the seat body and the turntable, the pulling plate is provided with a connecting end and a pulling end, the connecting end is connected with the seat body, a clamping bolt is arranged on the pulling end, the pulling end can move up and down between the seat body and the turntable, the clamping bolt can be driven to be inserted into the first gear hole when the pulling end moves downwards, and the clamping bolt can be driven to be pulled out when the pulling end moves upwards;

the gear retaining elastic piece is arranged between the seat body and the pulling end to normally drive the pulling end to move downwards.

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