CN108340815B

CN108340815B - Child safety seat

Info

Publication number: CN108340815B
Application number: CN201710047807.4A
Authority: CN
Inventors: 瞿家友; 王洪贤
Original assignee: Dongguan Jinwang Children Products Co ltd
Current assignee: Dongguan Jinwang Children Products Co ltd
Priority date: 2017-01-22
Filing date: 2017-01-22
Publication date: 2023-06-30
Anticipated expiration: 2037-01-22
Also published as: CN108340815A

Abstract

The invention discloses a child safety seat, comprising: the seat comprises a seat body, a headrest and a height adjusting mechanism, wherein a guide groove is formed in a seat back, sliding surfaces are respectively formed on two sides of the guide groove on the outer side surface of the seat back, a plurality of clamping grooves are formed in each sliding surface, and the headrest is arranged on the inner side surface of the seat back; the height adjustment mechanism includes: the device comprises an operation part, a fixing part and an adjusting part, wherein the operation part is connected with a headrest, a chute is arranged on the operation part, and the upper surface and the lower surface of the chute extend away from each other in the direction of the outer side surface of the chair back; the fixing part comprises a sliding plate and a guide block, the guide block is inserted into the guide groove and is connected with the headrest, and the sliding plate slides along the sliding surfaces at two sides; the adjusting section includes: the clamping rod is clamped in the clamping grooves on the two sides, the convex columns penetrate through the guide grooves and are inserted into the sliding grooves, and the elastic piece is used for normally driving the convex columns to move towards the headrest. The child safety seat disclosed by the invention is simple in structure, low in processing cost and convenient to adjust.

Description

Child safety seat

Technical Field

The present invention relates to the field of child safety seats.

Background

Most of the existing headrest arranged on the child safety seat is not adjustable in height, and various inconveniences are brought to children in different ages. Some child safety seats are provided with a mechanism capable of adjusting the height of the headrest, and the headrest in some adjusting mechanisms can be directly telescopic and can be stopped by friction force, so that the adjustment of the headrest is easy to lose efficacy. In some adjusting mechanisms, the headrest is fixed at different heights of the seat by bolts, so that the headrest is excessively troublesome to adjust.

Disclosure of Invention

The application aims to solve the technical problems in the prior art, so that the child safety seat is provided, and the height of the headrest can be conveniently adjusted.

The child safety seat according to the present invention comprises: 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 on 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.

According to the child safety seat disclosed by the embodiment of the invention, the height of the headrest on the seat body is adjusted by arranging the height adjusting mechanism, the child safety seat is simple in integral structure and low in processing cost, the height of the headrest can be adjusted by pulling the headrest up and down or the operating part, and the headrest can be better clamped on the seat body when pulling is stopped, so that the height adjustment of the headrest is very convenient.

In some embodiments, the adjusting portion further includes a roller disposed at an end of the boss protruding into the chute.

In some embodiments, the fixing portion is provided with a through guide hole, and the protruding column is telescopically arranged in the guide hole.

In some embodiments, the elastic member is a spring, the spring is disposed in the guide hole and sleeved on the convex column, one end of the spring abuts against the fixing portion, and the other end of the spring abuts against the convex column.

In some embodiments, an end of the post remote from the headrest forms a sleeve that is removably sleeved over the stem.

In some embodiments, the fixing portion includes a sliding plate and a guide block, the guide block is disposed on a side of the sliding plate facing the headrest, the guide block is inserted into the guide groove and connected to the headrest, the sliding plate vertically slides along the guide groove, and the adjusting portion is movably disposed on the guide block.

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

In some embodiments, the operation portion is provided with the sliding groove corresponding to each guide groove, and the adjusting portion includes a plurality of protruding columns and elastic members corresponding to a plurality of sliding grooves.

In some embodiments, a handle is provided at a top end of the operation part, and the chute is formed at a bottom end of the operation part.

In some embodiments, the headrest is provided with a fixing groove at one side facing the backrest, the operation part is arranged in the fixing groove, the height adjusting mechanism further comprises a sliding cover, the sliding cover covers the fixing groove, and the sliding cover is positioned between the operation part and the backrest.

In some embodiments, the child safety seat further comprises: 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.

In some embodiments, the base is provided with a plurality of first gear holes arranged 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.

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

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic perspective view of a child safety seat according to an embodiment of the invention;

FIG. 2 is a schematic perspective view of a seat body and headrest, height adjustment mechanism according to an embodiment of the invention;

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

FIG. 4 is an enlarged schematic view of a portion of the height adjustment mechanism;

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

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

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

FIG. 8 is a cross-sectional view of the base and turntable of FIG. 7;

fig. 9 is a perspective view of a pulling plate according to an embodiment of the present invention.

Reference numerals:

child safety seat 100,

The novel chair comprises a chair body 1, a chair seat 11, a chair back 12, an inner side surface S1 of the chair back, an outer side surface S2 of the chair back, a guide groove 13, a clamping groove 14, a first clamping block 15, a second clamping block 16, a sliding rail 17,

A headrest 2, a fixing groove 21,

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

Height adjusting mechanism 4, operating portion 41, slide slot 411, upper surface F1 of slide slot, lower surface F2 of slide slot, handle 412, fixing portion 42, guide block 421, slide plate 422, guide hole 423, notch 424, adjusting portion 43, click rod 431, boss 432, elastic member 433, roller 434, sleeve 435, slide cover 44, slide cover,

The seat adjusting mechanism 5, the turntable 51, the stopper 511, the pulling plate 52, the clip 521, the connection end P1, the pulling end P2, the holding block 522, the plug block 523, the shift position holding elastic member 53, and the slider 54.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

A child safety seat 100 according to an embodiment of the present invention is 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 backrest 12, and it is understood that when the child safety seat 100 is in use, a child sits on the seat 11 and rests on the backrest 12, the backrest 12 has an inner side S1 and an outer side S2, the surface of the backrest 12 against which the child rests is the inner side S1 of the backrest 12, and the surface of the backrest 12 opposite the inner side S1 is the outer side S2 of the backrest 12.

Referring to fig. 1-3, the headrest 2 is provided on an inner side surface S1 of the seatback 12, and the child safety seat 100 further includes a height adjusting mechanism 4 for adjusting the height of the headrest 2 on the seatback 12.

Specifically, as shown in fig. 3, a guide groove 13 penetrating in the thickness direction is provided on the seat back 12, the outer side 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 a plurality of clamping grooves 14 arranged vertically.

As shown in fig. 2 to 4, the height adjusting mechanism 4 includes: the operation portion 41, the fixing portion 42, and the adjustment portion 43, the operation portion 41 being connected to the headrest 2, the operation portion 41 being provided with a slide groove 411 on the side toward the outer side surface S2 of the seatback 12, the upper surface F1 and the lower surface F2 of the slide groove 411 extending away from each other in the direction toward the outer side surface S2 of the seatback 12. The fixing portion 42 includes a slide plate 422 and a guide block 421, the guide block 421 is provided on one side of the slide plate 422 facing the headrest 2 and connected to 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, and the slide plate 422 can slide along the sliding surfaces on both sides of the guide groove 13. The sliding plate 422 is provided in this embodiment to make the contact area between the fixing portion 42 and the seat back 12 of the seat body 1 large and smooth, but the structure of the fixing portion 42 in the embodiment of the present invention is not limited thereto, and in other embodiments, the fixing portion 42 may be provided with only the guide block 421 sliding up and down along the guide groove 13, which corresponds to the structure in which the sliding plate 422 is removed from the fixing portion 42.

The adjusting portion 43 is movably provided on the fixing portion 42, and the adjusting portion 43 includes: the locking lever 431, the protruding post 432 and the elastic member 433, wherein the locking lever 431 is locked in the locking groove 14 at both sides of the guiding 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 for normally driving the protruding post 432 to move towards the headrest 2. Here, "normally" means normal state, "normally driving" means that the elastic member 433 has a tendency to push the boss 432 in a direction frequently.

Specifically, the operation portion 41 and the fixing portion 42 of the height adjusting mechanism 4 are connected to the headrest 2, and the operation portion 41 may be integrally formed even on the headrest 2, and when one of the headrest 2, the operation portion 41, and the fixing portion 42 is pulled up and down, the other two may slide up and down.

Here, since the fixing portion 42 includes the slide plate 422 and the guide block 421, the guide block 421 is coupled to the headrest 2, and the slide plate 422 slides along the sliding surfaces of both sides of the guide groove 13, so that the guide block 421 is coupled between the headrest 2 and the slide plate 422, and the headrest 2 and the slide plate 422 are sandwiched at both sides of the seatback 12. Since the guide block 421 of the fixing portion 42 is fitted in the guide groove 13 on the seatback 12, when the height of the headrest 2 is adjusted, the headrest 2, the operating portion 41, and the fixing portion 42 all slide in the extending direction of the guide groove 13.

Since the locking lever 431 is engaged with the locking grooves 14 on both sides of the guide groove 13 in the adjusting portion 43, the boss 432 is inserted into the slide groove 411 through the guide groove 13, and the elastic member 433 is used to normally drive the boss 432 to move toward the headrest 2, the height adjusting mechanism 4 has two states, one is in a highly stable state, and the other is in a height adjusting state.

In a highly stable state of the headrest 2, the elastic member 433 tightly buckles the boss 432 in the slide slot 411, and after the boss 432 is compressed (or tensioned) in the slide slot 411, both ends of the locking rod 431 can be tightly locked in the locking grooves 14 at both sides of the guide groove 13, respectively, so that the headrest 2 cannot slide up and down.

When the headrest 2 (or the operating portion 41) is pulled upward, the operating portion 41 moves upward relative to the boss 432 of the adjusting portion 43, so that the boss 432 of the adjusting portion 43 abuts against the lower surface F2 of the slide slot 411. During the upward movement of the operating portion 41, the boss 432 is pushed out by the lower surface F2 of the slide slot 411 against the elastic force of the elastic member 433. At the same time as the protruding post 432 is ejected outward, the locking rod 431 of the adjusting portion 43 is also ejected outward of the locking groove 14. The fixing portion 42 can slide upward along the slide surface with the headrest 2 without the locking action of the locking lever 431. Until the upward pulling of the headrest 2 (or the operating portion 41) is stopped, the boss 432 is again pressed (or pulled) by the elastic member 433 in the slide slot 411, and both ends of the click lever 431 are respectively snapped tightly into the click slots 14, so that the headrest 2 cannot be adjusted upward any more.

Also, when the headrest 2 (or the operating portion 41) is pressed downward, the operating portion 41 moves downward relative to the boss 432 of the adjusting portion 43, so that the boss 432 of the adjusting portion 43 is stopped against the upper surface F1 of the slide slot 411. During the downward movement of the operating portion 41, the boss 432 is pushed out by the upper surface F1 of the slide slot 411 against the elastic force of the elastic member 433. At the same time of the outward ejection of the boss 432, the locking rod 431 of the adjusting portion 43 is also ejected out of the locking groove 14, and the fixing portion 42 can slide downward along with the headrest 2 along the sliding surface. Until the downward pressing of the headrest 2 (or the operating portion 41) is stopped, the boss 432 is again pressed (or pulled) by the elastic member 433 in the slide slot 411, and both ends of the click lever 431 are respectively snapped tightly into the click slots 14, so that the headrest 2 cannot be adjusted downward any more.

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 providing the height adjusting mechanism 4, the child safety seat 100 has a simple overall structure and low processing cost, and the height of the headrest 2 can be adjusted by pulling the headrest 2 up and down or the operating portion 41, and the headrest 2 can be better clamped on the seat body 1 when the pulling is stopped, so that the adjustment of the height of the headrest 2 is very convenient.

Specifically, as shown in fig. 2 to 4, the seat back 12 is provided with a plurality of spaced guide grooves 13, and the fixing portion 42 is provided with a plurality of guide blocks 421 respectively fitted into the plurality of guide grooves 13. The guiding action of the plurality of guide blocks 421 can lead the headrest 2 to be stressed evenly in the horizontal direction, and the sliding is stable during the height adjustment.

In some embodiments, as shown in fig. 2-4, two guide grooves 13 spaced apart from each other are provided on the seat back 12, two sides of each guide groove 13 in the outer side surface S2 of the seat back 12 are sliding surfaces, and a plurality of clamping grooves 14 spaced apart from each other uniformly in the up-down direction are provided on each sliding surface. As shown in fig. 3, two guide grooves 13 extending vertically are provided on the chair back 12, and three columns of vertically arranged clamping groove columns are further provided on the chair back 12, each column including a plurality of clamping grooves 14 extending transversely.

In this embodiment, the plurality of slots 14 in each slot row are parallel to each other, and the plurality of slots 14 in the three slot rows are arranged in a one-to-one correspondence, i.e. the heights of the three slots 14 in the same row are the same.

In some embodiments, as shown in fig. 2 and 3, the operation portion 41 is fixedly connected to the back surface of the headrest 2, the operation portion 41 is formed in a long straight plate shape, a handle 412 is provided at the top end of the operation portion 41, and a slide slot 411 is formed at the bottom end of the operation portion 41. Thus, when the height of the headrest 2 is adjusted, the handle 412 can be directly pulled up and down, and the operation is easier.

Specifically, as shown in fig. 3, when the seat back 12 is provided with a plurality of guide grooves 13, the operating portion 41 may be provided with a slide groove 411 corresponding to each guide groove 13, while the adjusting portion 43 may be provided with a plurality of bosses 432 and a plurality of elastic members 433 corresponding to the plurality of slide grooves 411. Therefore, when the height of the headrest 2 is adjusted, the headrest 2 is uniformly stressed in the horizontal direction, and the movement is stable.

In the embodiment shown in fig. 4, the bottom of the operation portion 41 may be provided with two slide grooves 411, specifically, the bottom of the operation portion 41 is formed with a square block, the left and right sides of the square block are formed with slide grooves 411, the slide grooves 411 on the left side are open on the left side, and the slide grooves 411 on the right side are open on the right side.

Further, as shown in fig. 3, the headrest 2 is provided with a fixing groove 21 on a side facing the seatback 12, and the operation portion 41 is provided in the fixing groove 21. Thus, the operation portion 41 does not interfere with the sliding of the headrest 2.

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

In some embodiments, as shown in fig. 2-4, the adjustment portion 43 includes: a clamping rod 431, a convex column 432, an elastic piece 433 and a roller 434. The number of the protruding columns 432 may be one or more, and each protruding column 432 is provided with a resilient member 433 and a roller 434.

The locking rod 431 may be a long straight round rod, and the vertical sections of all the locking grooves 14 on the seat body 1 are semicircular, and advantageously, the radius of the locking rod 431 is substantially equal to the radius of the vertical section of the locking groove 14, so that the locking rod 431 slides into or slides out of the locking groove 14 more gradually, and the locking phenomenon of the locking rod 431 can be avoided.

Specifically, as shown in fig. 4, the end of the boss 432 away from the headrest 2 forms a boss 435, and the boss 435 is detachably fitted over the click lever 431, which can facilitate the assembly of the adjusting portion 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 disposed at the end of the boss 432 extending into the sliding slot 411, so that when the headrest 2 is adjusted up and down, the roller 434 can slide along the lower surface F2 or the upper surface F1 of the sliding slot 411, and the sliding friction between the boss 432 and the surface of the sliding slot 411 can be converted into rolling friction by the arrangement of the roller 434, thereby enabling the height adjustment of the headrest 2 to be smoother and more labor-saving.

In some embodiments, as shown in fig. 4 and 2, the guide block 421 is provided with a through guide hole 423, and the boss 432 is telescopically disposed in the guide hole 423. Thus, the movable range of the adjusting portion 43 on the fixing portion 42 can be restricted, and the protrusion 432 of the adjusting portion 43 can be extended and contracted along the extending direction of the guide hole 423 when the headrest 2 moves up and down, so that the structural reliability of the adjustment of the headrest 2 can be improved.

Specifically, the elastic member 433 is a spring, the spring is disposed in the guide hole 423 and sleeved on the boss 432, one end of the spring abuts against the guide block 421, and the other end abuts against the boss 432. The spring is sleeved on the convex column 432 and drives the convex column 432 to move, so that on one hand, the elastic piece 433 can be ensured not to fall off from the convex column 432, and on the other hand, the elastic force of the elastic piece 433 can be ensured to be large and stable, and the structural reliability of the adjusting part 43 is ensured to be high.

More specifically, as shown in fig. 4 and 3, the upper end of each of the guide blocks 421 on the fixing portion 42 exceeds the upper end of the slide plate 422, the guide block 421 has a notch 424 formed on the side of the upper end away from the headrest 2, and the click lever 431 of the adjusting portion 43 is snapped into the notch 424, and the vertical cross section of the notch 424 is circular arc. The vertical section of the shaft sleeve 435 is circular, the shaft sleeve 435 is positioned in the notch 424, and no matter the convex column 432 is loosened or tensioned by the elastic piece 433, the shaft sleeve 435 can be stably positioned in the notch 424 without being askew and blocked.

As shown in fig. 4, the guide block 421 has a guide hole 423 provided at a position 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), a portion of the guide hole 423 away from the headrest 2 is a small hole section, a portion of the guide hole 423 adjacent to the headrest 2 is a large hole section, and a step is defined between the large hole section and the small hole section. The spring is disposed in the large hole section, one end of the spring is stopped against the step, and the other end of the spring is stopped against the end of the boss 432 where the roller 434 is disposed.

In some embodiments, as shown in fig. 6 and 7, a circular rotating hole 30 is provided on the base 3 of the child safety seat 100, the child safety seat 100 further includes a seat adjusting mechanism 5, the seat adjusting mechanism 5 includes a rotating disc 51, the rotating disc 51 is rotatably provided in the rotating hole 30, the seat body 1 is provided on the rotating disc 51, and the rotating member between the seat body 1 and the base 3 includes only the rotating disc 51.

It can be appreciated that if the seat body can rotate relative to the base on the existing child safety seat, the seat body and the base are provided with the rotating shaft. The rotating shaft is thinner, the cross-sectional area of the rotating shaft is usually less than one tenth of the seat area of the seat body, the rotating shaft is easy to break or deform due to overlarge torque and bending moment born by the thinner rotating shaft, and the seat body is easy to clamp and cannot rotate.

Some child safety seats are provided with a rotating shaft, a rotating disc is arranged above the rotating shaft, the rotating shaft is used as a main rotating supporting component when the seat rotates, and the rotating disc is used as an auxiliary supporting component, so that the seat is complex in structure and high in cost.

In the embodiment of the invention, the turntable 51 is arranged between the seat body 1 and the base 3, the cross section area of the turntable 51 is more than or equal to one tenth of the area of the seat 11, the turntable 51 has large area and strong bearing capacity, the turntable 51 is not easy to damage, skew and seize, and the rotation is stable and the reliability is high. And the processing precision is required to be lower because the section area of the turntable 51 is larger, so that the processing cost can be reduced.

In some embodiments of the present invention, the cross-sectional area of the dial 51 is about 1/5 to 1/3 of the projected area of the seat 11 on the horizontal plane, and preferably the cross-sectional area of the dial 51 is 1/4 of the projected area of the seat 11 on the horizontal plane. Here, the sectional area of the turntable 51 refers to the area of the turntable 51 in a section perpendicular to the rotation axis thereof.

In some embodiments, as shown in fig. 8, the base 3 includes: the upper and lower bottom cases 31 and 32, respectively, the lower bottom case 32 covers the bottom of the upper bottom case 31, and an installation space is defined between the upper and lower bottom cases 31 and 32. The empty shell structure can reduce the weight of the base 3 and the material processing cost.

Specifically, as shown in fig. 8, a rotation hole 30 is provided on the upper bottom case 31, a bottom end of the turntable 51 is extended into the installation space, and a portion 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 the rotating shaft, the contact stress of the connecting part between the rotating shaft and the base is large, and a special shaft seat is required to be arranged on the base, or a bearing is required to be connected between the rotating shaft and the base. However, the number of parts is increased due to the arrangement of the bearings, and the structure of the base at the mounting position of the bearings is complex, so that the cost is increased.

In the embodiment of the present invention, the cross-sectional area of the turntable 51 is larger, and the extrusion stress at the connection part of the turntable 51 and the base 3 is smaller, so that the turntable 51 can be directly placed on the base 3, which not only saves the number of parts, but also simplifies the seat structure, which is a great advantage of the child safety seat 100 of the embodiment of the present invention.

Specifically, as shown in fig. 8, the base 3 further includes a suspension plate 34, the suspension plate 34 is disposed in the installation space, a suspension space is defined between the suspension plate 34 and the upper bottom case 31, and a part of the edge of the turntable 51 is sandwiched in the suspension space. In this way, the turntable 51 provides a part of supporting force by the lower bottom shell 32 and another part of supporting force by the upper bottom shell 31, and after the supporting force on the turntable 51 is dispersed, the stability of the whole support is improved.

In some embodiments, as shown in fig. 8, a stopper 511 is provided on the turntable 51, and the stopper 511 is provided in the installation space and stopped on the upper bottom case 31.

Specifically, an annular stop 511 is provided on the outer periphery of the turntable 51, the turntable 51 extends into the rotation hole 30 from below the upper bottom shell 31, and then the turntable 51 is locked on the upper bottom shell 31 by the stop 511, so that the whole turntable 51 is prevented from falling out of the upper bottom shell 31.

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

As shown in fig. 6, the seat adjusting mechanism 5 further includes: the pull plate 52 and the gear-position holding elastic member 53, the pull plate 52 is provided between the seat body 1 and the turntable 51, as shown in fig. 9 and 6, the pull plate 52 has a connection end P1 and a pull end P2, the connection end P1 is connected with the seat body 1, the pull end P2 is provided with a latch 521, the pull end P2 can move up and down between the seat body 1 and the turntable 51, the latch 521 can be driven to be inserted into the first gear hole 36 when the pull end P2 moves down, and the latch 521 can be driven to be pulled out when the pull end P2 moves up. The shift position maintaining elastic member 53 is provided between the seat body 1 and the pulling end P2 to normally drive the pulling end P2 to move downward. Here, "normal" means normal state, "normal driving" means that the shift position maintaining elastic member 53 has a tendency to push the pulling plate 52 in a direction frequently.

Thus, when the seat body 1 needs to rotate at an angle, the pulling end P2 of the pulling plate 52 can be pulled upwards, so that the latch 521 on the pulling end P2 is pulled out from the first gear hole 36 on the base 3, and then the pulling end P2 is pulled, thereby driving the whole seat body 1 to rotate and adjusting the angle thereof. When the seat body 1 is adjusted to a desired angle, the pulling end P2 can be released, the pulling end P2 moves downward under the action of the gear retaining elastic member 53, and the pulling end P2 drives the latch 521 to insert into the other first gear hole 36. Under the elastic force of the shift position maintaining elastic member 53, the clip 521 is not easily removed from the first shift position hole 36, so that the seat body 1 can maintain the angular state.

It will be appreciated that the plurality of first gear holes 36 in the base 3 are located on the rotational path of the latch 521 so that the latch 521 can be positioned within the appropriate first gear hole 36 when the seat body 1 is rotated.

In fig. 9, only one latch 521 is provided on the pull plate 52, but in other embodiments, a plurality of latches 521 may be provided on the pull plate 52, and the positions of the plurality of first gear holes 36 on the base 3 may be adapted to the positions.

Specifically, as shown in fig. 9 and 6, the pull plate 52 is provided with a holding block 522, the holding block 522 may be in the shape of a cross, the gear position holding elastic member 53 may be a spring, the bottom end of which is sleeved on the holding block 522 and the upper end of which is stopped 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 clamping block 15 and a second clamping block 16, and as shown in fig. 9 and 6, the pull plate 52 is provided with a plugging block 523 clamped between the first clamping block 15 and the second clamping block 16, so that the angle adjustment of the seat body 1 can be conveniently performed when the pull plate 52 is pulled and pushed. In addition, the pull plate 52 is detachably connected to the seat body 1, so that the child safety seat 100 can be conveniently assembled, disassembled and stored.

In some embodiments, as shown in fig. 1, the seat body 1 is provided with a slide rail 17, and as shown in fig. 6, the seat adjusting mechanism 5 further includes a slider 54, the slider 54 is provided on the turntable 51, and the seat body 1 is slidably provided on the turntable 51 by cooperation of the slider 54 and the slide rail 17. The position of the seat body 1 relative to the turntable 51 can be adjusted, so that the adjustment direction of the seat body 1 is more diversified, and the use is more comfortable.

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, so that when the slide block 54 slides relative to the slide rail 17, the inclination angle of the backrest of the seat body 1 can be adjusted, so that the child can use the seat more comfortably and safely.

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

Thus, when the seat body 1 needs to be adjusted, the latch 521 can be switched between the plurality of first gear holes 36, the latch 521 can also be switched between the first gear holes 36 and the second gear holes 38, and when the second gear holes 38 are a plurality of, the latch 521 can also be switched between the plurality of 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 is clamped into the first gear hole 36, the pulling end P2 of the pulling plate 52 can be pulled upwards, so that the latch 521 on the pulling end P2 is pulled out of the first gear hole 36, and then the pulling end P2 is pulled along the extending direction of the slide rail 17, so that the whole seat body 1 can be driven to slide, and the position of the seat body can be adjusted. When the seat body 1 is adjusted to a required position, the pulling end P2 can be released, the pulling end P2 moves downwards under the action of the gear retaining elastic member 53, and the pulling end P2 drives the latch 521 to insert into the second gear hole 38. Under the elastic force of the shift position maintaining elastic member 53, the clip 521 is not easily removed from the second shift position hole 38, so that the seat body 1 can maintain the position.

It will be appreciated that one or more second gear holes 38 may be provided in either the base 3 or the turntable 51, the second gear holes 38 being located on the movable track of the latch 521, such that the latch 521 is positioned within the appropriate second gear hole 38 when the seat body 1 is slid.

Specifically, the seat body 1 is provided with a through groove penetrating in the thickness direction to constitute the slide rail 17, and the slider 54 is engaged in the through groove. The sliding rail 17 and the sliding block 54 are simple in structure and low in manufacturing cost.

Specifically, as shown in fig. 6, the slider 54 is formed in a long strip shape, the slider 54 has a T-shaped cross section perpendicular to the longitudinal direction, and the seat body 1 is provided with a long strip-shaped through groove, the cross section perpendicular to the longitudinal direction of which is a T-shape that is adapted to the slider 54.

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

The structure of the child safety seat 100 in one embodiment is described below in conjunction with fig. 1-9.

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

As shown in fig. 1 to 4, the child safety seat 100 further includes a height adjustment mechanism 4, the height adjustment mechanism 4 including an operation portion 41, an adjustment portion 43, and a fixing portion 42; the headrest 2 is fixedly connected with the operation part 41 and the fixing part 42, and the adjusting part 43 is arranged in the fixing part 42 in a telescopic manner; the back of the seat body 1 is provided with a plurality of clamping grooves 14 which are parallel to each other.

The handle 412 is provided at the upper end of the operation unit 41, and the chute 411 is provided at the lower end.

The adjusting part 43 comprises a clamping rod 431 extending transversely, a convex column 432, a roller 434 and a spring; one end of the convex column 432 is provided with a shaft sleeve 435, the other end of the convex column 432 is connected with the roller 434, the spring is sleeved into the convex column 432 and then stretches into the convex column 432, the concave hole at the end of the roller is connected, and the clamping rod 431 penetrates through the shaft sleeve 435 and is matched and clamped with the clamping groove 14.

The fixing portion 42 is provided with a through guide hole 423, and the boss 432 of the adjusting portion 43 is fitted to the slide slot 411 at the lower end of the operating portion 41 through the guide hole 423.

The lifting principle of the headrest 2 is as follows: the handle 412 at the upper end of the operating portion 41 is pulled to be lifted or pressed down, the roller 434 can move along the upper inclined plane or the lower inclined plane of the chute 411 at the lower end of the operating portion 41, so as to squeeze the spring, push the boss 432 to drive the clamping rod 431 to be separated from the clamping groove 14, and when the headrest 2 is lifted or pressed down to a proper height, the clamping rod 431 is clamped with the clamping groove 14 again. The adjustment of the headrest 2 can be achieved by only lifting or pushing down without additional operations.

As shown in fig. 6 to 9, a seat adjusting mechanism 5 is provided between the base 3 and the seat body 1, and the seat adjusting mechanism 5 includes: turntable 51, pulling plate 52 and springs.

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

The turntable 51 is provided with a T-shaped convex column 432, a pull plate 52 and a spring; the lower end of the pulling plate 52 is provided with a clamping bolt 521; a limit groove 37 is arranged on the rear side of the upper surface of the base 3.

The surface of the base 3 is provided with a plurality of first gear holes 36, and the first gear holes 36 are arranged on the movement track of the clamping bolt 521.

The bottom of the seat body 1 is provided with an arc-shaped through groove, a first clamping block 15 and a second clamping block 16; the arc-shaped through groove is sleeved on the T-shaped sliding block 54 and can slide along the T-shaped sliding block 54, and the seat body 1 can rotate along with the turntable 51; the second clamping block 16 is matched with the limiting groove 37, so that the pulling plate 52 drives the seat body 1 to slide along the sliding block 54 when moving forwards and backwards, and the range limited by the limiting groove 37 cannot be exceeded when the pulling plate slides backwards.

Principle of adjusting the gear of a seat: when the gear needs to be adjusted, the pulling end P2 of the pull plate 52 is pressed upwards, the clamping bolt 521 at the lower end of the pull plate 52 is separated from the first gear hole 36 or the second gear hole 38 on the base 3, the pull plate 52 is rotated or pulled back and forth to a proper position, the clamping bolt 521 clamps the first gear hole 36 or the second gear hole 38 at the corresponding position, and after the hand is released, the position of the pull plate 52 is fixed under the action of the elasticity of the spring.

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

In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

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.