CN117922398A - A child safety seat with built-in reclining function - Google Patents

Abstract

The invention discloses a child safety seat with a built-in reclining function, which comprises a seat body and a sitting posture adjusting pad movably arranged on the seat body, wherein the seat body is provided with a track groove for the sitting posture adjusting pad to slide between a first position and a second position relative to the seat body; when the sitting posture adjusting pad is positioned at the first position, the sitting posture adjusting pad is attached to the chair body; when the sitting posture adjusting pad slides from the first position to the second position of the chair body, at least part of the sitting posture adjusting pad is not attached to the chair body, so that the sitting posture adjusting pad is deformed into a form in which a child can lie in the chair body in a leaning way. The seat cushion has the advantages that the structural design is ingenious, the locking pin can be switched between the first gear locking hole and the second gear locking hole only by one hand, namely, the position of the seat cushion relative to the seat body is adjusted, so that the seat cushion is convenient for children to switch between the sitting posture and the sleeping posture in the seat body, and the children can sit more comfortably.

Description

A child safety seat with built-in reclining function

Technical Field

The invention relates to the technical field of child safety seats, and in particular to a child safety seat with a built-in reclining function.

Background technique

A child safety seat in a car, also known as a child restraint system (CRS), is a seat designed for children of different ages or weights and installed in a car to effectively improve the safety of children in a car. In the event of a car collision or sudden deceleration, it reduces the impact force on the child and restricts the child's body movement to reduce the harm to them and ensure the safety of the child in the car. When the child is small or falls asleep, the child needs to be placed in a relatively flat child safety seat, which not only improves the safety of the child in the car, but also makes the child more comfortable.

In the prior art, a child safety seat includes a base and a seat body, and usually provides a comfortable and safe riding environment for children by adjusting the inclination angle of the seat body relative to the base. For example, a Chinese utility model patent (publication number: CN201309436Y) discloses a seat back angle adjustment device for a child safety seat for a vehicle, which includes a seat back (i.e., a seat body), a base, a sliding plate, and a handle. A through hole is provided on the base, and grooves are provided on both sides of the through hole. The front and rear movably arranged of the sliding plate in the through hole and partially exposed below the base, and the sliding plate extends a convex shoulder in opposite directions below the base, and a seat back is provided above the sliding plate, and an elastic component is provided inside. On both sides of the elastic component, left and right sliders are sleeved in the sliding plate, and the left and right sliders are sleeved in the groove, and left and right slider pins are respectively provided on the left and right sliders, and the left and right slider pins are sleeved in the handle through the through hole provided on the handle, and one end of the handle provided with the through hole is connected to the sliding plate through the elastic component, and the through holes provided on the handle are arranged in a cone. The seat back is reliably connected to the base and is not easy to shake. The adjustment of the seat back of the child safety seat for a vehicle can be operated by one hand, which is convenient to operate.

However, the backrest angle adjustment device for a child safety seat for a vehicle disclosed in the above-mentioned prior art adjusts the inclination angle of the backrest (i.e., the seat body) relative to the base. The child sitting in the seat body always maintains a sitting posture and cannot be adjusted to a lying posture, which cannot well meet the riding comfort of the child.

Therefore, it is necessary to improve the existing technology.

Summary of the invention

The purpose of the present invention is to provide a child safety seat with a built-in reclining function in view of the defects and shortcomings of the prior art. The structure of the child safety seat is ingeniously designed. The locking pin can be switched between the first-gear locking hole and the second-gear locking hole by one-hand operation, that is, by pushing and pulling, that is, the position of the sitting position adjustment pad relative to the chair body can be adjusted. The operation is convenient and convenient, which makes it convenient for children to switch between sitting and sleeping positions in the seat, making the child more comfortable to sit.

To achieve the above object, the present invention adopts the following technical solutions:

A child safety seat with a built-in reclining function comprises a chair body, and also comprises a sitting posture adjustment pad movably arranged on the chair body, the chair body being provided with a track groove for the sitting posture adjustment pad to slide between a first position and a second position relative to the chair body; the chair body comprising a seat and a seat back, the sitting posture adjustment pad comprising a seat cushion matched with the seat and a back cushion matched with the seat back, the bottom of the back cushion being hinged to the rear end of the seat cushion; the track groove comprising a transverse track groove arranged on the seat and a vertical track groove arranged on the seat back; the seat cushion is slidably engaged with the transverse track groove, and the top of the back cushion is slidably engaged with the vertical track groove When the sitting posture adjustment pad is in the first position, the seat cushion is located at the rear end of the horizontal track groove, and the top of the back cushion is located at the top end of the vertical track groove. At this time, the sitting posture adjustment pad is in contact with the chair body; when the sitting posture adjustment pad slides from the first position of the chair body to the second position, the seat cushion slides forward to the front end of the horizontal track groove relative to the seat, the bottom of the back cushion slides forward with the seat cushion, and the top of the back cushion slides downward to the lower end of the vertical track groove relative to the chair back. At this time, at least a partial area of the sitting posture adjustment pad is not in contact with the chair body, so that the sitting posture adjustment pad is deformed into a shape that allows the child to lie reclined in the chair body.

Furthermore, the seat cushion includes a plurality of seat cushion units, which are arranged on the seat in sequence from front to back, and two adjacent seat cushion units are hinged, and the bottom of the back cushion is hinged to the rear end of the seat cushion unit located at the rearmost side; the hinges of two adjacent seat cushion units and the hinges of the back cushion and the corresponding seat cushion units are all provided with connecting rods; at least part of the connecting rods are slidingly engaged with the transverse track grooves.

Furthermore, the seat cushion includes a first seat cushion unit and a second seat cushion unit, the bottom of the back cushion is hinged to the rear end of the first seat cushion unit, the front end of the first seat cushion unit is hinged to the rear end of the second seat cushion unit, the front end of the second seat cushion unit is provided with a first sliding rod, the transverse track groove includes a transverse track groove A that is slidably matched with the first sliding rod, and the top of the back cushion is provided with a second sliding rod that is slidably matched with the vertical track groove.

Furthermore, the connecting rod includes a first connecting rod arranged at the hinge between the back cushion and the first seat cushion unit, and a second connecting rod arranged at the hinge between the first seat cushion unit and the second seat cushion unit; the transverse track groove also includes a transverse track groove B slidingly matched with the first connecting rod and a transverse track groove C slidingly matched with the second connecting rod.

Furthermore, an arc-shaped portion extending toward the seat is provided at the bottom of the back cushion, and the back cushion is hinged to the rear end of the seat cushion via the arc-shaped portion.

Furthermore, a locking mechanism is provided between the chair body and the sitting posture adjustment cushion, and the locking mechanism is used to lock the sitting posture adjustment cushion at a first position or a second position relative to the chair body.

Furthermore, the locking mechanism includes a sliding plate, a locking pin slidably engaged with the sliding plate, and a gear locking hole arranged on the side of the seat. The sliding plate is slidably connected to the seat cushion, and a return spring is arranged between the sliding plate and the seat cushion. The return spring acts on the sliding plate so that the locking pin always has a tendency to be inserted into the gear locking hole.

Furthermore, the sliding plate is provided with a straight sliding groove, which extends from the rear end to the front end of the sliding plate. The sliding plate is also provided with an inclined sliding groove arranged in an "eight" shape. One end of the locking pin is inserted into the gear locking hole of the seat, and the other end of the locking pin is provided with a pull rod perpendicular to it, and the pull rod extends into the inclined sliding groove. When the sliding plate slides, the sliding plate drives the locking pin to move along the inclined sliding groove through the inclined sliding groove, so that the locking pin is inserted into the gear locking hole or pulled out from the gear locking hole.

Furthermore, the gear locking hole includes a first gear locking hole and a second gear locking hole. When the locking pin is plugged into the first gear locking hole, the sitting posture adjustment pad is located at the first position of the chair body; when the locking pin is plugged into the second gear locking hole, the sitting posture adjustment pad is located at the second position of the chair body.

Furthermore, a first handle is provided at the front end of the sliding plate, and the first handle is fixedly connected to the sliding plate via a connecting column passing through the seat cushion, and the seat cushion is provided with a waist-shaped groove slidingly matched with the connecting column, and the seat cushion is fixedly provided with a second handle arranged opposite to the first handle.

After adopting the above structure, the beneficial effects of the present invention are:

(1) The child safety seat with built-in reclining function described in the present invention comprises a seat body, and also comprises a sitting posture adjustment pad movably arranged on the seat body, wherein the seat body is provided with a track groove for the sitting posture adjustment pad to slide between a first position and a second position relative to the seat body; when the sitting posture adjustment pad is located at the first position, the sitting posture adjustment pad is in contact with the seat body; when the sitting posture adjustment pad slides from the first position of the seat body to the second position, at least a part of the sitting posture adjustment pad is not in contact with the seat body, so that the sitting posture adjustment pad is deformed into a shape that allows the child to recline in the seat body. Its structural design is ingenious, and only needs to press the front end of the first handle with the thumb of one hand, and the other four fingers hold the second handle, and then make a fist, and push or pull the second handle accordingly to realize the switching of the locking pin between the first gear locking hole and the second gear locking hole, that is, adjusting the position of the sitting posture adjustment pad relative to the seat body. When the locking pin is switched from the first-gear locking hole to the second-gear locking hole, that is, when the sitting posture adjustment pad is adjusted from the first position relative to the chair body to the second position, the seat cushion slides forward relative to the seat, the bottom of the back cushion slides forward with the seat cushion, and the top of the back cushion slides downward along the second track groove. The design of this structure ensures that when the sitting posture adjustment pad is located at the first position or the second position of the chair body, the back cushion and the seat cushion are smoothly connected without forming steps, which is convenient for children to maintain the best sitting or sleeping position in the seat, making the child more comfortable to sit, and there is no need to pick up the child during the adjustment process. Regardless of whether the sitting posture adjustment pad is located at the first position or the second position of the chair body, the seat cushion is always attached to the seat, making the sitting posture adjustment pad more stable, providing better support for the child, and further improving the comfort of the child's ride.

(2) A child safety seat with a built-in reclining function described in the present invention, wherein the seat body includes a seat and a backrest, the sitting posture adjustment cushion includes a seat cushion corresponding to the seat and a back cushion corresponding to the backrest, and the seat cushion includes a plurality of seat cushion units, the seat cushion units are arranged on the seat from front to back, and two adjacent seat cushion units are hinged by a connecting rod, and the hinged connection method can make the seat cushion as a whole more closely fit the seat. A transverse track groove is provided on the seat, and at least part of the connecting rod is slidably engaged with the transverse track groove. At least part of the connecting rod is slidably engaged with the transverse track groove, so that the seat cushion slides along the direction of the transverse track groove, and then the seat cushion slides closely with the seat, and the seat always provides support for the seat cushion, so that the seat cushion is more stable and the child is more comfortable to sit on. The front end of the second seat cushion unit slides forward along the transverse track groove A and then extends downward, and the front end of the second seat cushion unit provides support for the child's legs, thereby improving the comfort of the child's sitting.

(3) In the child safety seat with built-in reclining function described in the present invention, the bottom of the back cushion is provided with an arc-shaped portion extending toward the seat cushion, and the back cushion is hinged to the rear end of the seat cushion through the arc-shaped portion. The arc-shaped portion always fits the child's buttocks and waist, better provides support for the child, and improves the child's riding comfort. The arc-shaped portion at the bottom of the back cushion extends toward the seat, and the arrangement of the arc-shaped portion ensures that the hinge between the bottom of the back cushion and the rear end of the seat cushion is always located above the seat, so that no obvious step is formed between the seat cushion and the back cushion to affect comfort, whether the sitting posture adjustment pad is in the first position or the second position.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a cross-sectional view of the overall structure of the sitting posture adjustment pad of the present invention when it is located at the first position of the chair body;

FIG3 is a structural schematic diagram 1 of the sitting posture adjustment pad of the present invention when it is located at the first position of the chair body;

FIG4 is a second structural schematic diagram of the sitting posture adjustment pad of the present invention when it is located at the first position of the chair body;

5 is a cross-sectional view of the overall structure of the sitting posture adjustment pad of the present invention when it is located at the second position of the chair body;

FIG6 is a first structural diagram of the sitting posture adjustment pad of the present invention when it is located at the second position of the chair body;

7 is a second structural schematic diagram of the sitting posture adjustment pad of the present invention when it is located at the second position of the chair body;

FIG8 is a schematic diagram of the three-dimensional structure of the locking pin of the present invention;

9 is a schematic diagram of the positions of the transverse track groove A, the transverse track groove B, the transverse track groove C, the first gear locking hole and the second gear locking hole of the present invention;

10 is a schematic diagram of the connection and cooperation of the sliding plate, the return spring and the first handle of the present invention;

FIG. 11 is a schematic diagram of the connection and cooperation between the first cushion unit and the return spring of the present invention.

The reference numerals in Figures 1 to 11 are:

1. Chair body; 11. Seat; 111. Horizontal track groove A; 112. Horizontal track groove B; 113. Horizontal track groove C; 12. Chair back; 121. Vertical track groove; 2. Sitting posture adjustment pad; 21. Cushion; 211. First cushion unit; 212. Second cushion unit; 2121. First slider; 2122. Waist-shaped groove; 22. Back cushion; 221. Second slider; 222. Arc-shaped portion; 3. First connecting rod; 4. Second connecting rod; 5. Locking mechanism; 51. Sliding plate; 511. Straight slide groove; 512. Oblique slide groove; 52. Locking pin; 521. Pull rod; 53. Gear locking hole; 531. First gear locking hole; 532. Second gear locking hole; 6. Reset spring; 7. First handle; 71. Connecting column; 8. Second handle.

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly defined and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the present invention are for illustrative purposes only and do not represent the only implementation method.

It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

As shown in Figures 1 to 11, a child safety seat with a built-in reclining function includes a chair body 1, and also includes a sitting posture adjustment pad 2 movably arranged on the chair body 1, the chair body 1 is provided with a track groove for the sitting posture adjustment pad 2 to slide between a first position and a second position relative to the chair body 1; the chair body 1 includes a seat 11 and a seat back 12, the sitting posture adjustment pad 2 includes a seat cushion 21 matched with the seat 11 and a back cushion 22 matched with the seat back 12, and the bottom of the back cushion 22 is hinged to the rear end of the seat cushion 21; the track groove includes a horizontal track groove arranged on the seat 11 and a vertical track groove 121 arranged on the seat back 12; the seat cushion 21 is slidably matched with the horizontal track groove, and the top of the back cushion 22 is hinged to the vertical track groove. The track groove 121 is slidably matched; when the sitting posture adjustment pad 2 is in the first position, the seat cushion 21 is located at the rear end of the horizontal track groove, and the top of the back cushion 22 is located at the top of the vertical track groove 121, at this time, the sitting posture adjustment pad 2 is in contact with the chair body 1; when the sitting posture adjustment pad 2 slides from the first position of the chair body 1 to the second position, the seat cushion 21 slides forward to the front end of the horizontal track groove relative to the seat 11, the bottom of the back cushion 22 slides forward with the seat cushion 21, and the top of the back cushion 22 slides downward to the lower end of the vertical track groove 121 relative to the chair back 12, at this time, at least part of the area of the sitting posture adjustment pad 2 is not in contact with the chair body 1, so that the sitting posture adjustment pad 2 is deformed into a shape that allows the child to lie reclined in the chair body 1. A first handle 7 is provided at the front end of the sliding plate 51, and the first handle 7 is fixedly connected to the sliding plate 51 via a connecting column 71 penetrating the seat cushion 21. The seat cushion 21 is provided with a waist-shaped groove 2122 slidingly engaged with the connecting column 71, and the seat cushion 21 is fixedly provided with a second handle 8 arranged opposite to the first handle 7.

Based on the above embodiments, the present invention aims to solve the problem of providing a child safety seat with a built-in reclining function, comprising a chair body 1, and also comprising a sitting posture adjustment pad 2 movably arranged on the chair body 1, the chair body 1 being provided with a track groove for the sitting posture adjustment pad 2 to slide relative to the chair body 1 between a first position and a second position; when the sitting posture adjustment pad 2 is in the first position, the locking pin 52 is plugged into and matched with the first gear locking hole 531, the first connecting rod 3 at the hinge between the back cushion 22 and the first seat cushion unit 211 is located at the rear end of the transverse track groove B112, the second connecting rod 4 at the hinge between the first seat cushion unit 211 and the second seat cushion unit 212 is located at the rear end of the transverse track groove C113, the first sliding rod at the front end of the second seat cushion unit 212 is located at the rear end of the transverse track groove A111, and the second sliding rod arranged on the top of the back cushion 22 is located at the rear end of the vertical track groove Towards the top of the track groove 121, at this time, the sitting posture adjustment pad 2 is in contact with the chair body 1; when the sitting posture adjustment pad 2 slides from the first position of the chair body 1 to the second position, the locking pin 52 is plugged into the second gear locking hole 532, and the first connecting rod 3 at the hinge between the back cushion 22 and the first seat cushion unit 211 is located at the front end of the horizontal track groove B112, the second connecting rod 4 at the hinge between the first seat cushion unit 211 and the second seat cushion unit 212 is located at the front end of the horizontal track groove C113, the first sliding rod at the front end of the second seat cushion unit 212 is located at the front end of the horizontal track groove A111, and the second sliding rod arranged on the top of the back cushion 22 is located at the bottom end of the vertical track groove 121. At this time, at least part of the area of the sitting posture adjustment pad 2 is not in contact with the chair body 1, so that the sitting posture adjustment pad 2 is deformed into a shape that allows children to lie diagonally in the chair body 1. The structure is cleverly designed. One only needs to press the front end of the first handle 7 with the thumb of one hand, and hold the second handle 8 with the other four fingers, and then make a fist, and push or pull the second handle 8 accordingly, so that the locking pin 52 can be switched between the first-gear locking hole 531 and the second-gear locking hole 532, that is, the position of the sitting posture adjustment pad 2 relative to the chair body 1 can be adjusted. When the locking pin 52 is switched from the first-gear locking hole 531 to cooperate with the second-gear locking hole 532, that is, when the sitting posture adjustment pad 2 is adjusted from the first position relative to the chair body 1 to the second position, the seat cushion 21 slides forward relative to the seat 11, the bottom of the back cushion 22 slides forward with the seat cushion 21, and the top of the back cushion 22 slides downward along the vertical track groove 121. The design of this structure makes it possible for the back cushion 22 and the seat cushion 21 to be smoothly connected when the sitting position adjustment pad 2 is located at the first position or the second position of the chair body 1, without forming a step, so that the child can maintain the best sitting or sleeping position in the seat, making the child more comfortable to sit, and there is no need to pick up the child during the adjustment process; and whether the sitting position adjustment pad 2 is located at the first position or the second position of the chair body 1, the seat cushion 21 is always arranged in close contact with the seat 11, making the seat cushion 21 more stable and providing better support for the child. In this embodiment, a plurality of gear locking holes 53 can be arranged on the side of the seat 11 to achieve multi-gear adjustment. In a further embodiment, preferably, a first gear locking hole 531 and a second gear locking hole 532 are provided. When the child is in a sitting position in the chair body 1, in order to make the child sit more comfortably, the locking pin 52 is plugged into the first gear locking hole 531, and the sitting position adjustment pad 2 is arranged in close contact with the chair back 12, as shown in Figures 2 to 4. When the child is in a sleeping position in the chair body 1, in order to make the child more comfortable, the locking pin 52 is plugged into the second gear locking hole 532. At this time, at least part of the area of the sitting adjustment pad 2 does not fit the chair body 1, so that the sitting adjustment pad 2 is deformed into a state that allows the child to lie obliquely in the chair body 1, as shown in Figures 5 to 7. During use, when it is necessary to adjust the position of the sitting adjustment pad 2 relative to the chair body 1, only the thumb of one hand is needed to press the front end of the first handle 7, and the other four fingers hold the second handle 8, and then make a fist. The first handle 7 drives the sliding plate 51 to overcome the elastic force of the reset spring 6 and move toward the second handle 8. The locking pin 52 slidingly arranged in the oblique slide groove 512 on the sliding plate 51 slides in the direction close to the straight slide groove 511 under the guidance of the oblique slide groove 512, that is, slides in the direction away from the gear locking hole 53, and finally the locking pin 52 is disengaged from the initial gear locking hole 53. At the same time, the push Move the second handle 8 backward or pull the second handle 8 forward, then release the first handle 7, under the elastic force of the return spring 6, the sliding plate 51 slides forward along the straight slide groove 511, and the locking pin 52 slidably arranged in the inclined slide groove 512 of the sliding plate 51 slides in the direction away from the straight slide groove 511, that is, slides in the direction close to the gear locking hole 53 under the guidance of the inclined slide groove 512. When the locking pin 52 moves to align with the gear locking hole 53, the locking pin 52 automatically inserts into the corresponding gear locking hole 53 for positioning, so as to adjust the position of the sitting posture adjustment pad 2 relative to the chair body 1. The first handle 7 is fixedly connected to the sliding plate 51 through the connecting column 71 penetrating the seat cushion 21, and the seat cushion 21 is provided with a waist-shaped groove 2122 that is slidably matched with the connecting column 71. As shown in Figure 10, the connecting column 71 passes through the seat cushion 21 to fix the sliding plate 51 located below the seat cushion 21 and the first handle 7 located above the seat cushion 21, so that the sliding plate 51 can move synchronously with the movement of the first handle 7. The setting of the waist-shaped groove 2122 limits the running trajectory of the first handle 7, and also allows the first handle 7 to slide relative to the seat cushion 21, providing an avoidance space for the sliding of the first handle 7.

As another preferred embodiment of the present invention, the seat cushion 21 includes a plurality of seat cushion units, which are arranged on the seat 11 from front to back in sequence, and two adjacent seat cushion units are hinged, and the bottom of the back cushion 22 is hinged to the rear end of the seat cushion unit located at the rearmost side; the hinges of the two adjacent seat cushion units and the hinges of the back cushion 22 and the corresponding seat cushion units are all provided with connecting rods; at least part of the connecting rods are slidably engaged with the transverse track groove. The seat cushion 21 includes a first seat cushion unit 211 and a second seat cushion unit 212, the bottom of the back cushion 22 is hinged to the rear end of the first seat cushion unit 211, the front end of the first seat cushion unit 211 is hinged to the rear end of the second seat cushion unit 212, the front end of the second seat cushion unit 212 is provided with a first sliding rod, the transverse track groove includes a transverse track groove A111 slidably engaged with the first sliding rod, and the top of the back cushion 22 is provided with a second sliding rod slidably engaged with the vertical track groove 121. The connecting rods include a first connecting rod 3 provided at the hinged joint between the back cushion 22 and the first cushion unit 211, and a second connecting rod 4 provided at the hinged joint between the first cushion unit 211 and the second cushion unit 212; the transverse track groove also includes a transverse track groove B112 slidably matched with the first connecting rod 3 and a transverse track groove C113 slidably matched with the second connecting rod 4. In this embodiment, as shown in FIGS. 2 to 7 , a first slider 2121 is fixedly provided at the lower end of the second cushion unit 212, a first slide bar is provided on the first slide bar 2121, the first slide bar is slidably matched with the transverse track groove A111, and the transverse track groove A111 extends from the front end to the rear end of the seat 11; a second slider 221 is fixedly provided at the top of the back cushion 22, the second slide bar is provided on the second slide bar 221, the chair back 12 is provided with a vertical track groove 121, the vertical track groove 121 extends from top to bottom, and the second slide bar is slidably matched with the vertical track groove 121. The bottom of the back cushion 22 is hinged to the rear end of the seat cushion 21. The seat cushion 21 can only slide along the front-to-back direction of the seat 11 under the guidance of the horizontal track groove A111, the bottom of the back cushion 22 slides along the seat cushion 21 through the hinge of the first connecting rod 3, and the top of the back cushion 22 can only slide along the up-down direction of the chair back 12 under the guidance of the vertical track groove 121. In this way, the back cushion 22 has two forms relative to the chair back 12. One is that the back cushion 22 is set in close contact with the chair back 12, and the child can sit in the chair body 1; the other is that the back cushion 22 is not set in close contact with the chair back 12, but is set in an inclined manner, and the child can lie in the chair body 1. In a further embodiment, the vertical track groove 121 is set in an inclined manner from top to bottom, and the horizontal distance between the bottom end of the vertical track groove 121 and the seat 11 is smaller than the horizontal distance between the top end of the vertical track groove 121 and the seat 11. This structure is designed to make the vertical track groove 121 consistent with the inclination angle of the chair back 12 itself, so that the top of the back cushion 22 always fits the chair back 12 when sliding along the vertical track groove 121, so that the child will not feel uncomfortable lying down due to the obvious step formed between the back cushion 22 and the chair back 12. The back cushion 22, the first cushion unit 211 and the second cushion unit 212 are all connected by hinges, and the relative angle between the back cushion 22 and the first cushion unit 211 and the relative angle between the first cushion unit 211 and the second cushion unit 212 can be adjusted by the hinged connection. The relative angle between the back cushion 22 and the first cushion unit 211 is adjustable, which is convenient for children to switch between sitting and sleeping positions. The relative angle between the first cushion unit 211 and the second cushion unit 212 is adjustable, so that the cushion 21 before and after adjustment can fit the curvature of the seat 11, thereby improving the comfort of children. By sliding the first slide bar, the second slide bar, the first connecting rod 3 and the second connecting rod 4 with the transverse track groove A111, the vertical track groove 121, the transverse track groove B112 and the transverse track groove C113 respectively, the back cushion 22, the first cushion unit 211 and the second cushion unit 212 can slide synchronously, and the cushion 21 can slide along the transverse track groove, so that the cushion 21 can slide in close contact with the seat 11, and the seat 11 can always provide support for the cushion 21, so that the cushion 21 is more stable and the child can sit more comfortably. In a further embodiment, preferably, the transverse track groove A111, the transverse track groove B112 and the transverse track groove C113 are all designed as arc grooves adapted to the curvature of the seat 11, so that the cushion 21 can always better fit with the seat 11 during the sliding process. At the same time, the front end of the second cushion unit 212 slides forward along the arc-shaped transverse track groove A111 and then extends downward. The front end of the second cushion unit 212 provides support for the child's legs, thereby improving the child's riding comfort.

As another preferred embodiment of the present invention, the bottom of the back cushion 22 is provided with an arcuate portion 222 extending toward the seat 11, and the back cushion 22 is hinged to the rear end of the seat cushion 21 through the arcuate portion 222. In this embodiment, as shown in FIGS. 1 to 7 , the arcuate portion 222 always fits the child's hips and waist, better provides support for the child, and improves the child's riding comfort. The arcuate portion 222 at the bottom of the back cushion 22 extends toward the seat 11, and the arrangement of the arcuate portion 222 ensures that the hinge between the bottom of the back cushion 22 and the rear end of the seat cushion 21 is always located above the seat 11, so that no obvious step is formed between the seat cushion 21 and the back cushion 22 to affect comfort when the sitting posture adjustment pad 2 is in the first position or the second position.

As another preferred embodiment of the present invention, a locking mechanism 5 is provided between the chair body 1 and the sitting posture adjustment pad 2, and the locking mechanism 5 is used to lock the sitting posture adjustment pad 2 in the first position or the second position relative to the chair body 1. The locking mechanism 5 includes a sliding plate 51, a locking pin 52 that is slidably engaged with the sliding plate 51, and a gear locking hole 53 provided on the side of the seat 11. The sliding plate 51 is slidably connected to the seat cushion 21, and a return spring 6 is provided between the sliding plate 51 and the seat cushion 21. The return spring 6 acts on the sliding plate 51 so that the locking pin 52 always has a tendency to be inserted into the gear locking hole 53. The sliding plate 51 is provided with a straight sliding groove 511, and the straight sliding groove 511 extends from the rear end to the front end of the sliding plate 51. The sliding plate 51 is also provided with an inclined sliding groove 512 arranged in an "eight" shape. One end of the locking pin 52 is inserted into the gear locking hole 53 of the seat 11, and the other end of the locking pin 52 is provided with a pull rod 521 perpendicular to it. The pull rod 521 extends into the inclined sliding groove 512. When the sliding plate 51 slides, the sliding plate 51 drives the locking pin 52 to move along the inclined sliding groove 512 through the inclined sliding groove 512, so that the locking pin 52 is inserted into the gear locking hole 53 or pulled out from the gear locking hole 53. The gear locking hole 53 includes a first gear locking hole 531 and a second gear locking hole 532. When the locking pin 52 is plugged into the first gear locking hole 531, the sitting posture adjustment pad 2 is located at the first position of the chair body 1; when the locking pin 52 is plugged into the second gear locking hole 532, the sitting posture adjustment pad 2 is located at the second position of the chair body 1. In this embodiment, as shown in Figures 4, 7, and 9, the gear locking hole 53 includes a first gear locking hole 531 and a second gear locking hole 532. When the locking pin 52 is plugged into the first gear locking hole 531, the sitting posture adjustment pad 2 is located at the first position of the chair body 1, and the child can sit in the chair body 1 in a sitting position. When it is necessary to adjust the sitting posture adjustment pad 2 to the second position of the chair body 1, that is, to adjust the locking pin 52 from the first gear locking hole 531 to be plugged into and matched with the second gear locking hole 532, it is only necessary to press the front end of the first handle 7 with the thumb of one hand, and hold the second handle 8 with the other four fingers, and then make a fist. The first handle 7 will drive the sliding plate 51 to overcome the elastic force of the return spring 6 and move toward the second handle 8. The locking pin 52 slidingly arranged in the oblique groove 512 on the sliding plate 51 slides in the direction close to the straight groove 511 under the guiding action of the oblique groove 512, that is, slides in the direction away from the gear locking hole 53, and finally makes the locking pin 52 move from When the child is in the first gear locking hole 531 and the second handle 8 is pulled forward, the first handle 7 is released and the sliding plate 51 slides forward along the straight sliding groove 511 under the elastic force of the return spring 6. The locking pin 52 slidingly arranged in the oblique sliding groove 512 of the sliding plate 51 slides in the direction away from the straight sliding groove 511 under the guidance of the oblique sliding groove 512, that is, slides in the direction close to the gear locking hole 53. When the locking pin 52 moves to be aligned with the second gear locking hole 532, the locking pin 52 is automatically inserted into the second gear locking hole 532 for positioning, so that the sitting posture adjustment pad 2 is adjusted to the second position of the chair body 1. At this time, the child can lie obliquely in the chair body 1. When the sitting posture adjustment pad 2 needs to be adjusted to the first position of the chair body 1, that is, the locking pin 52 is adjusted from the second gear locking hole 532 to be plugged into the first gear locking hole 531, only the thumb of one hand is required to press the front end of the first handle 7, and the other four fingers hold the second handle 8, and then make a fist. The first handle 7 will drive the sliding plate 51 to overcome the elastic force of the return spring 6 and move toward the second handle 8. The locking pin 52 slidingly arranged in the oblique sliding groove 512 on the sliding plate 51 slides in the direction close to the straight sliding groove 511 under the guidance of the oblique sliding groove 512, that is, slides in the direction away from the gear locking hole 53, and finally makes the locking pin 52 move from the second gear locking hole 532 to the first gear locking hole 531. When the second gear locking hole 532 is disengaged, the second handle 8 is pushed backward and then the first handle 7 is released. The sliding plate 51 slides forward along the straight sliding groove 511 under the elastic force of the return spring 6. The locking pin 52 slidingly arranged in the oblique sliding groove 512 of the sliding plate 51 slides in the direction away from the straight sliding groove 511 under the guidance of the oblique sliding groove 512, that is, slides in the direction close to the gear locking hole 53. When the locking pin 52 moves to be aligned with the first gear locking hole 531, the locking pin 52 is automatically inserted into the first gear locking hole 531 for adaptation and positioning, so that the sitting posture adjustment pad 2 is adjusted to the first position located on the chair body 1, and the child can sit in the chair body 1 at this time. The sliding plate 51 is provided with a straight slide groove 511, which extends from the rear end to the front end of the sliding plate 51. The sliding plate 51 is also provided with an oblique slide groove 512 arranged in an "eight" shape. One end of the locking pin 52 is inserted into the gear locking hole 53 of the seat 11. The other end of the locking pin 52 is provided with a pull rod 521 perpendicular thereto, and the pull rod 521 extends into the oblique slide groove 512. When the sliding plate 51 slides, the sliding plate 51 drives the locking pin 52 to move along the oblique slide groove 512 through the oblique slide groove 512, so that the locking pin 52 is inserted into the gear locking hole 53 or pulled out from the gear locking hole 53. In this embodiment, as shown in Figures 4, 7, and 10, the straight slide groove 511 extends from the rear end to the front end of the sliding plate 51, that is, the straight slide groove 511 extends along the front-back direction of the seat 11. Through the sliding cooperation of the straight slide groove 511, the oblique slide groove 512 and the locking pin 52, the sliding of the sliding plate 51 in the front-to-back direction is converted into the sliding of the locking pin 52 in the left-to-right direction, so that the locking pin 52 can slide closer to or farther from the gear locking hole 53, so that the locking pin 52 can be inserted into the gear locking hole 53 or pulled out from the gear locking hole 53, thereby realizing the adjustment of the position of the sitting adjustment pad 2 relative to the chair body 1, so as to meet the different needs of children's sitting and sleeping positions and improve the comfort of children's riding. As shown in Figures 7 and 10, the setting of the straight slide groove 511 realizes the limitation of the running track of the sliding plate 51, and also makes the running of the sliding plate 51 more stable.

Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims (10)

1. Child safety seat with built-in function of lying, including seat body (1), its characterized in that: the chair also comprises a sitting posture adjusting pad (2) movably arranged on the chair body (1), wherein the chair body (1) is provided with a track groove for the sitting posture adjusting pad (2) to slide between a first position and a second position relative to the chair body (1); the seat body (1) comprises a seat (11) and a chair back (12), the sitting posture adjusting pad (2) comprises a seat cushion (21) matched with the seat (11) and a back pad (22) matched with the chair back (12), and the bottom of the back pad (22) is hinged with the rear end of the seat cushion (21); the track grooves comprise transverse track grooves arranged on the chair seat (11) and vertical track grooves (121) arranged on the chair back (12); the seat cushion (21) is in sliding fit with the transverse track groove, and the top of the back cushion (22) is in sliding fit with the vertical track groove (121); when the sitting posture adjusting pad (2) is positioned at the first position, the seat cushion (21) is positioned at the rear end of the transverse track groove, the top of the back cushion (22) is positioned at the top end of the vertical track groove (121), and at the moment, the sitting posture adjusting pad (2) is attached to the chair body (1); when the sitting posture adjusting pad (2) slides to the second position from the first position of the chair body (1), the seat cushion (21) slides forward to the front end of the transverse track groove relative to the seat support (11), the bottom of the back pad (22) slides forward along with the seat cushion (21), the top of the back pad (22) slides downward to the lower end of the vertical track groove (121) relative to the chair back (12), at the moment, at least part of the area of the sitting posture adjusting pad (2) is not attached to the chair body (1), so that the sitting posture adjusting pad (2) is deformed into a form in which a child can lie in the chair body (1) in a leaning way.

2. A child safety seat with built-in reclining function according to claim 1, wherein: the seat cushion (21) comprises a plurality of seat cushion units, the seat cushion units are sequentially arranged on the seat support (11) from front to back, two adjacent seat cushion units are hinged, and the bottom of the back cushion (22) is hinged with the rear end of the seat cushion unit positioned at the rearmost side; connecting rods are arranged at the hinging positions of two adjacent cushion units and the hinging positions of the back cushion (22) and the corresponding cushion units; at least part of the connecting rod is in sliding connection with the transverse track groove.

3. A child safety seat with built-in reclining function according to claim 2, wherein: the cushion (21) comprises a first cushion unit (211) and a second cushion unit (212), the bottom of the back cushion (22) is hinged with the rear end of the first cushion unit (211), the front end of the first cushion unit (211) is hinged with the rear end of the second cushion unit (212), the front end of the second cushion unit (212) is provided with a first sliding rod, the transverse track groove comprises a transverse track groove A (111) in sliding connection with the first sliding rod, and the top of the back cushion (22) is provided with a second sliding rod in sliding connection with the vertical track groove (121).

4. A child safety seat with built-in reclining function according to claim 3, wherein: the connecting rod comprises a first connecting rod (3) arranged at the hinge joint of the back cushion (22) and the first cushion unit (211) and a second connecting rod (4) arranged at the hinge joint of the first cushion unit (211) and the second cushion unit (212); the transverse track groove also comprises a transverse track groove B (112) in sliding connection with the first connecting rod (3) and a transverse track groove C (113) in sliding connection with the second connecting rod (4).

5. A child safety seat with built-in reclining function according to claim 1, wherein: the bottom of the back cushion (22) is provided with an arc-shaped part (222) extending towards the direction of the seat (11), and the back cushion (22) is hinged with the rear end of the cushion (21) through the arc-shaped part (222).

6. A child safety seat with built-in recline function according to any one of claims 1 to 5, wherein: the chair is characterized in that a locking mechanism (5) is arranged between the chair body (1) and the sitting posture adjusting pad (2) in a matched mode, and the locking mechanism (5) is used for enabling the sitting posture adjusting pad (2) to be locked at a first position or a second position relative to the chair body (1).

7. A child safety seat with built-in reclining function according to claim 6, wherein: the locking mechanism (5) comprises a sliding plate (51), a locking pin (52) in sliding connection with the sliding plate (51) and a gear locking hole (53) arranged on the side portion of the seat (11), the sliding plate (51) is in sliding connection with the seat cushion (21), a return spring (6) is propped between the sliding plate (51) and the seat cushion (21), and the return spring (6) acts on the sliding plate (51) to enable the locking pin (52) to always have a trend of being inserted into the gear locking hole (53).

8. A child safety seat with built-in reclining function according to claim 7, wherein: the sliding plate (51) is provided with a straight sliding groove (511), the straight sliding groove (511) extends from the rear end to the front end of the sliding plate (51), the sliding plate (51) is further provided with an inclined sliding groove (512) which is arranged in an eight-shaped mode, one end of the locking pin (52) is inserted into a gear locking hole (53) of the seat (11), the other end of the locking pin (52) is provided with a pull rod (521) perpendicular to the pull rod (521), the pull rod (521) stretches into the inclined sliding groove (512), and when the sliding plate (51) slides, the sliding plate (51) drives the locking pin (52) to move along the inclined sliding groove (512) through the inclined sliding groove (512), so that the locking pin (52) is inserted into the gear locking hole (53) or pulled out from the gear locking hole (53).

9. A child safety seat with built-in reclining function according to claim 7, wherein: the gear locking hole (53) comprises a first gear locking hole (531) and a second gear locking hole (532), and when the locking pin (52) is in plug-in fit with the first gear locking hole (531), the sitting posture adjusting pad (2) is positioned at a first position of the chair body (1); when the locking pin (52) is in plug-in fit with the second gear locking hole (532), the sitting posture adjusting pad (2) is located at the second position of the chair body (1).

10. A child safety seat with built-in reclining function according to claim 7, wherein: the front end of sliding plate (51) is provided with first handle (7), first handle (7) are through spliced pole (71) and sliding plate (51) fixed connection that wear to locate cushion (21), cushion (21) are provided with and connect complex kidney slot (2122) with spliced pole (71) slip, cushion (21) are fixed be provided with second handle (8) that set up relatively with first handle (7).