Automobile heightening chair for children

Abstract

The invention discloses an automobile child heightening chair which comprises a base, a backrest, a lower base and an upper base, the backrest is detachably mounted at one end of the upper base, a lying angle limiting gear is arranged on the lower base, and a locking opening and closing mechanism matched with the lying angle limiting gear for use is arranged in the upper base; fIX assemblies are further arranged on the two sides of the lower base, and an FIX gear adjusting mechanism connected with the FIX assemblies and used for controlling the FIX assemblies is arranged in the lower base. Hand holes extending outwards are formed in the matching face of the lower base and the upper base and the lower cover of the lower base respectively, and the locking opening and closing mechanism or the FIX gear adjusting mechanism is controlled in the hand holes respectively. According to the automobile child heightening seat, the lying angle of the backrest can be adjusted through the base, the base and the backrest can be rapidly separated or assembled, the base and the backrest can be combined in multiple modes, the requirements of different market laws and regulations can be met, and therefore the cost for launching safety seats to different markets is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of child safety seats for cars, and in particular to a child booster seat for cars. Background Art

[0002] A child booster seat is a safety seat designed for older child passengers over 100 cm tall. It is installed in the car for children to sit in. It uses the car seat belt or the car seat belt + ISOFIX to restrain and protect the child, which can effectively improve the safety of child passengers.

[0003] In order to flexibly use the space in the car, when there are no children, the backrest of the booster seat will be removed and placed in the trunk. Most of the backrests of the existing booster seats on the market need to be rotated (along the backrest base connection axis) to a position flush with the base before they can be removed, which is very inconvenient in the narrow space in the car.

[0004] In addition, the backrest reclining angle of the existing booster seats all passively follows the backrest angle of the car seat, and the riding state of the child cannot be adjusted through its own structure, which is not friendly enough to the riding comfort requirements of child passengers.

[0005] In addition, there are many regulations for child safety seats, including European standards, American standards, Australian standards, etc., so child seats of different standards need to be designed to suit different markets, which greatly increases the cost for companies to launch in different markets. Summary of the invention

[0006] The purpose of the present invention is to provide a child booster seat for a car in view of the problems existing in the prior art.

[0007] To achieve the above object, the technical solution adopted by the present invention is: A child booster seat for a car comprises a base and a backrest arranged on the base, the base comprises a lower base, the lower base is provided with an upper base which can be slidably adjusted to adjust the lying angle of the backrest, the backrest is detachably mounted on one end of the upper base, the lower base is provided with a lying angle limiting gear, and the upper base is provided with a locking opening and closing mechanism adapted for use with the lying angle limiting gear; FIX components are also provided on both sides of the lower base, and a FIX gear adjustment mechanism for connecting and controlling the FIX components is provided in the lower base; hand holes extending outwards are respectively provided at the mating surfaces of the lower base and the upper base and at the lower cover of the lower base, and the locking opening and closing mechanism or the FIX gear adjustment mechanism is respectively controlled in the hand holes.

[0008] By improving the base and the backrest, the child booster seat for automobiles can not only adjust the lying angle of the backrest through the base, but also quickly separate or assemble the base and the backrest. The base and the backrest have multiple combinations, which can respectively meet the requirements of different market regulations, thereby effectively reducing the cost of launching safety seats in different markets.

[0009] The base is arranged in cooperation with the upper base and the lower base, so that the lying angle of the backrest can be adjusted by utilizing the relative sliding of the two, and different adjustment mechanisms can be installed respectively by utilizing the internal space thereof, thereby making full use of the internal space of the upper base and the lower base, and rationally arranging a variety of adjustment mechanisms, so that the structure of the entire height-enhancing chair is more reasonable, the appearance is more beautiful, and the safety is higher.

[0010] The upper base uses the space at the bottom to install the locking opening and closing mechanism, which can be conveniently used in conjunction with the lying angle limiting gear on the lower base, facilitating the adjustment of the lying angle while also locking the lying angle at a fixed angle. The lower base uses its internal space to install the FIX gear adjustment mechanism, so as to control the extension position of the FIX component and lock it at a certain gear, allowing the booster seat to be more conveniently and safely connected to the car seat.

[0011] Furthermore, the lower cover of the upper base is provided with a plurality of upper base and lower cover slide grooves, the upper cover of the lower base is provided with a plurality of pin fixing seats, the pin fixing seats are provided with connecting pins, the pin fixing seats pass upward through the upper base lower cover slide groove and can slide along the upper base lower cover slide groove, the connecting pins are located above the upper base lower cover slide groove, through such an arrangement, the upper base and the lower base can be connected, and the upper base can be slid relative to the lower base, thereby changing the lying angle of the backrest.

[0012] Furthermore, the lying angle limiting gear includes a lying angle gear area arranged on the upper cover of the lower base, and a plurality of gear holes are provided in the lying angle gear area at intervals along the sliding direction; the lying angle gear area protrudes upward, and a gear area limiting groove for accommodating the upward protruding part of the lying angle gear area is provided under the lower cover of the upper base.

[0013] Furthermore, the locking opening and closing mechanism includes a resettable buckle piece arranged in the upper base, the buckle piece includes a buckle part, and a buckle lock block frame connected to the other end of the buckle part, the side wall of the buckle lock block frame is provided with a buckle bevel groove, the buckle lock block frame is provided with a base locking block, the side wall of the base locking block is provided with a locking block guide column connected to the buckle bevel groove, and a lying angle locking pin used in conjunction with the lying angle limiting gear is also provided under the base locking block.

[0014] Furthermore, a hand reset spring connected to the lower cover of the upper base is provided at the bottom of the hand piece, which can automatically reset the hand piece; the hand catch portion is arranged above the hand hole, and the lower cover of the upper base is provided with a hand catch groove corresponding to the hand catch portion, which is convenient for user operation.

[0015] Furthermore, an end of the upper base away from the hand hole is provided with a snap-in groove opening upward, a plug-in frame cooperating with the snap-in groove is provided below the backrest, a pair of slidable backrest connectors are provided in the plug-in frame, a connector return spring is connected to the opposite sides of the pair of backrest connectors, and a pair of connector limiting columns are respectively provided on the opposite sides of the backrest connectors, the connector limiting columns respectively pass through the plug-in frame and are connected with the connector limiting holes in the snap-in groove, and the plug-in frame and the backrest connector are also provided with interconnected backrest connection hand holes.

[0016] Furthermore, the FIX assembly includes a pair of FIX bodies slidably connected to the lower cover of the lower base, and a cross bar connecting the pair of FIX bodies; FIX shift plates are respectively connected to the cross bars near the FIX bodies, and a pair of FIX shift plates are respectively provided with a number of corresponding FIX shift slots, the FIX shift slots are connected to the FIX shift adjustment mechanism, and one end of the cross bar or the FIX shift plate is also provided with a FIX tension spring connected to the lower cover of the lower base.

[0017] Furthermore, the FIX gear adjustment mechanism includes a resettable FIX handle piece arranged on the lower cover of the lower base, and a FIX lock hook connected to the FIX handle piece; handle bevel grooves are respectively provided at the two corners of the FIX handle piece, the FIX lock hook is located between the FIX handle piece and the lower cover of the lower base and is rotatably connected to the lower cover of the lower base, a lock hook guide column is provided on the FIX lock hook, the lock hook guide column is connected to the handle bevel groove, and a gear hook connected to the FIX component is also provided at one end of the FIX lock hook.

[0018] Furthermore, a connecting ear is provided at one end of the FIX lock hook away from the gear hook, and a lock hook reset tension spring is connected between the connecting ear and the lower cover of the lower base, and a handle reset spring connected to the lower base is also provided at one end of the FIX handle piece away from the FIX lock hook; a handle hole is also provided on the FIX handle piece.

[0019] Furthermore, the backrest is provided with an adjustable headrest, the backrest is provided with a plurality of height limiting gear holes, the back of the headrest is connected with a headrest adjusting buckle, the headrest adjusting buckle is connected with a headrest locking block frame through a long buckle rod, a slidable headrest locking block is connected in the headrest locking block frame through a headrest oblique groove, and the headrest locking block is connected to the height limiting gear hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The car child booster seat can not only adjust the lying angle of the backrest through the base by improving the base and the backrest, but also quickly separate or assemble the base and the backrest. The base and the backrest have multiple combinations, which can meet the requirements of different market regulations respectively, thereby effectively reducing the cost of launching safety seats in different markets; 2. The base can adjust the lying angle of the backrest by utilizing the relative sliding of the upper base and the lower base, and can also utilize the internal space thereof to install different adjustment mechanisms, which is sufficient. The internal space of the upper and lower bases is fully utilized, and a variety of adjustment mechanisms are rationally arranged, making the entire booster chair structure more reasonable, more beautiful in appearance, and safer; 3. The setting of the hand hole is convenient for users to use, so that the locking opening and closing mechanism and the FIX gear adjustment mechanism can be controlled from the hand hole, and this design can hide the buckle and handle to prevent children from accidentally touching or playing with them, while making the base more comfortable and more beautiful; 4. Through the upper and lower plug-in connection method, combined with the quick installation and quick release operations, the backrest can be easily separated from the base. You only need to press the connector on the backrest with your fingers to lift the backrest directly from the base without laying it down, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a child booster seat for a car according to the present invention; Figure 2 It is a partial cross-sectional schematic diagram of the connection between the upper base and the lower base of the present invention; Figure 3 It is a top view schematic diagram of the lower cover of the upper base of the present invention; Figure 4 It is a partial enlarged schematic diagram of the connection between the upper base lower cover slide groove and the pin shaft fixing seat of the present invention; Figure 5 It is a schematic diagram of the buckle handle on the lower cover of the upper base of the present invention; Figure 6 It is a schematic diagram of the connection between the buckle handle and the limit groove of the gear area of ​​the present invention; Figure 7 It is a schematic diagram of the backrest and the base being separated from each other according to the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the backrest and the base connected to each other in the present invention; Fig. 9 It is a schematic diagram of the FIX assembly and the FIX gear position adjustment mechanism on the lower base of the present invention; Fig.10 It is a schematic diagram of the FIX main body of the FIX assembly on the lower base of the present invention extending backward; Fig.11It is a back schematic diagram of the FIX assembly and the FIX gear adjustment mechanism of the present invention; Fig.12 It is a structural schematic diagram of the FIX lock hook of the present invention; Fig.13 It is a schematic diagram of the child booster seat for automobiles of the present invention with its backrest upright; Fig.14 A schematic diagram of the maximum tilted lying angle of the backrest of the child booster seat for automobiles of the present invention; Fig.15 A schematic diagram of replacing another base of the child booster seat for automobiles of the present invention; Fig.16 A schematic diagram of the connection between the backrest and the headrest of the present invention; Fig.17 It is a schematic diagram of the cross-sectional structure of the connection between the backrest and the headrest of the present invention; Fig.18 It is a structural schematic diagram of the hand buckle long rod and the headrest locking block frame of the present invention; In the figure: 1. base; 101. lower base; 1011. lower base upper cover; 1012. lower base lower cover; 102. upper base; 1021. upper base upper cover; 1022. upper base lower cover; 2. backrest; 3. headrest; 4. hand hole; 5. upper base lower cover slide; 6. pin shaft fixing seat; 7. connecting pin; 8. lying angle gear area; 9. gear hole; 10. gear area limiting groove; 11. hand buckle; 1101. hand buckle; 1102. hand buckle lock block frame; 1103. hand buckle oblique groove; 12. base lock block; 1201. lock block guide column; 1202. lying angle lock pin; 13. hand buckle reset spring; 14. clamping groove; 15. plug-in frame; 16. backrest connector; 17. connector reset spring; 18. connector limiting column ;19. Limiting hole of connecting part;20. Hole for connecting hand of backrest;21. FIX body;22. Cross bar;23. FIX shift plate;24. FIX shift slot;25. FIX tension spring;26. FIX handle piece;2601. Handle hole;2602. Rectangular limiting hole;27. Oblique groove of handle;28. FIX lock hook;2801. Lock hook guide column;2802. Shift hook;2803. Connecting ear piece;29. Handle reset spring;30. Lock hook reset tension spring;31. Limiting cylinder;32. Shift hole for height limit;33. Headrest adjustment buckle;34. Buckle long rod;35. Headrest lock block frame;3501. Headrest oblique slot;36. Headrest lock block;3601. Headrest lock block guide column;37. Headrest buckle reset spring. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 12 As shown, a child booster seat for a car comprises a base 1 and a backrest 2 arranged on the base 1, the base 1 comprises a lower base 101, the lower base 101 is provided with an upper base 102 which can be slidably adjusted to adjust the lying angle of the backrest 2, the backrest 2 is detachably mounted on one end of the upper base 102, the lower base 101 is provided with a lying angle limiting gear, and the upper base 102 is provided with a locking opening and closing mechanism adapted for use with the lying angle limiting gear; FIX components are also provided on both sides of the lower base 101, and a FIX gear adjustment mechanism for connecting and controlling the FIX components is provided in the lower base; hand holes extending outwards are respectively provided at the mating surfaces of the lower base 101 and the upper base 102 and under the lower cover of the lower base 101, and the locking opening and closing mechanism or the FIX gear adjustment mechanism is respectively controlled in the respective hand holes.

[0025] By improving the base 1 and the backrest 2, the child booster seat for automobile can not only adjust the lying angle of the backrest 2 through the base 1, but also quickly separate or assemble the base 1 and the backrest 2. The base and the backrest have multiple combinations, which can meet the requirements of different market regulations, thereby effectively reducing the cost of launching safety seats in different markets.

[0026] The base 1, through the coordinated arrangement of the upper base 102 and the lower base 101, can not only utilize the relative sliding of the two to adjust the lying angle of the backrest 2, but also utilize the internal space thereof to install different adjustment mechanisms, thereby making full use of the internal space of the upper base and the lower base, and rationally arranging a variety of adjustment mechanisms, making the entire height-enhancing chair structure more reasonable, more beautiful in appearance, and safer.

[0027] The upper base 102 uses the space at the bottom thereof to install the locking opening and closing mechanism, which can be conveniently used in conjunction with the reclining angle limiting gear on the lower base 101, facilitating the reclining angle adjustment while also locking the reclining angle at a fixed angle. The lower base 101 uses its internal space to install the FIX gear adjustment mechanism, so as to control the extension position of the FIX component and lock it at a certain gear, allowing the booster seat to be more conveniently and safely connected to the car seat.

[0028] The hand hole 4 is arranged in front of the mating surface of the upper base and the lower base and below the lower cover of the lower base, which is convenient for users to use, so that the locking opening and closing mechanism and the FIX gear adjustment mechanism can be controlled from the hand hole. In addition, this design can hide the buckle and handle to prevent children from accidentally touching or playing with them. At the same time, it makes the base more comfortable to ride and more beautiful. The upper cover of the upper base does not need to be set with notches or protrusions left for operation.

[0029] Furthermore, the lower base 101 includes a lower base lower cover 1012 and a lower base upper cover 1011, that is, the lower cover and the upper cover of the lower base 101, and the two are assembled together to form the lower base; similarly, the upper base 102 includes an upper base lower cover 1022 and an upper base upper cover 1021, that is, the lower cover and the upper cover of the upper base 102, and the two are assembled together to form the upper base; the upper base lower cover 1022 is slidably set on the lower base upper cover 1011.

[0030] Further, combined with Figure 2 to Figure 4 As shown, the lower cover of the upper base 102 is provided with a plurality of upper base lower cover slide grooves 5, and the upper cover of the lower base 101 is provided with a plurality of pin shaft fixing seats 6, and the pin shaft fixing seats 6 are provided with connecting pins 7. The pin shaft fixing seats 6 pass upward through the upper base lower cover slide grooves 5 and can slide along the upper base lower cover slide grooves 5, and the connecting pins 7 are located above the upper base lower cover slide grooves 5.

[0031] The upper base lower cover slide groove 5 plays a guiding and limiting role, and can connect the pin shaft fixing seat 6 and allow the pin shaft fixing seat 6 to slide along the upper base lower cover slide groove 5. The connecting pin 7 extends from both sides of the pin shaft fixing seat 6 and spans above the upper base lower cover slide groove 5 to form a limit to prevent the pin shaft fixing seat 6 from escaping from the upper base lower cover slide groove 5. Through such a setting, the upper base 102 and the lower base 101 can be connected, and the upper base 102 can slide relative to the lower base 101, thereby changing the lying angle of the backrest 2.

[0032] In this embodiment, four pin fixing seats 6 are provided on the lower base upper cover 1011, and four upper base lower cover sliding grooves 5 are provided on the upper base lower cover 1022, with two on each side.

[0033] Further, combined with Figure 5 and Figure 6 ,as well as Fig.13 and Fig.14 As shown, the lying angle limiting gear includes a lying angle gear area 8 arranged on the upper cover of the lower base 101, and a plurality of gear holes 9 are provided in the lying angle gear area 8 at intervals along the sliding direction, and different gear holes 9 correspond to different lying angle gears; the lying angle gear area 8 protrudes upward, and a gear area limiting groove 10 for accommodating the upward protruding part of the lying angle gear area 8 is provided under the lower cover of the upper base 102.

[0034] The lying angle gear zone 8 protrudes upward, which can increase the depth of the gear hole 9 and the structural strength of the location, thereby increasing the locking stability; the setting of the gear zone limit groove 10 can, on the one hand, accommodate the upwardly protruding part, and on the other hand, it is also a limit for the lying angle gear zone 8. When the lying angle locking pin is inserted into the first gear hole on the far left, the right side of the gear zone limit groove and the right side of the lying angle gear zone will also form a limit, and at this time, the backrest is in the upright lying angle position; when the lying angle locking pin is inserted into the last gear hole on the far right, the left side of the gear zone limit groove and the left side of the lying angle gear zone will also form a limit, and at this time, the backrest is in the most inclined lying angle position.

[0035] Furthermore, the locking opening and closing mechanism includes a resettable buckle piece 11 arranged in the upper base 102, the buckle piece 11 includes a buckle part 1101, and a buckle lock block frame 1102 connected to the other end of the buckle part 1101, the side wall of the buckle lock block frame 1102 is provided with a buckle bevel groove 1103, the buckle lock block frame 1102 is provided with a base lock block 12, the side wall of the base lock block 12 is provided with a lock block guide column 1201 connected to the buckle bevel groove 1103, and the bottom of the base lock block 12 is also provided with a lying angle lock pin 1202 used in conjunction with the lying angle limiting gear.

[0036] By pulling the hand piece 11, the base lock block 12 in the hand lock block frame 1102 at the other end can be driven to move. Due to the cooperation between the lock block guide column 1201 and the hand bevel groove 1103, the base lock block 12 will move upward while moving forward, so that the lying angle lock pin 1202 will also move upward and separate from the gear hole 9 to achieve unlocking. When the hand piece 11 is loosened, the base lock block 12 will move downward again, allowing the lying angle lock pin 1202 to be inserted into the gear hole 9 again to achieve locking.

[0037] In this embodiment, the base 1 is divided into an upper base 102 and a lower base 101, and the contact surface of the upper and lower bases is a concentric circle with an axis perpendicular to the left and right directions of the seat. A plurality of the gear holes 9 are provided in the lower base 101, and an angle unlocking buckle 11 is provided in the upper base 102. The end of the buckle 11 is connected to a base locking block 12, and the lying angle locking pin of the base locking block 12 falls into the gear hole 9 of the lower base, so that the upper and lower bases are relatively fixed; the buckle 11 is pulled to drive the lying angle locking pin 1202 of the base locking block to disengage from the gear hole 9 of the lower base, thereby realizing the unlocking of the angles of the upper and lower bases, and pulling / pushing the upper base 102 to slide relative to the lower base 101 around the axis of the concentric circle, thereby driving the backrest connected thereto to realize the lying angle adjustment.

[0038] Furthermore, a hand reset spring 13 connected to the lower cover of the upper base 102 is provided at the bottom of the hand piece 11, the hand portion 1101 is arranged above the hand hole 4, and a hand groove is provided on the lower cover of the upper base 102 corresponding to the hand portion 1101 so that the hand can be buckled into the hand portion 1101.

[0039] The provision of the hand-clasp reset spring 13 can allow the hand-clasp member 11 to automatically reset; the hand-clasp portion 1101 is provided above the hand hole 4 to facilitate user operation.

[0040] Further, combined with Figure 7 and Figure 8 As shown, the upper base 102 is provided with a snap-in groove 14 opening upward at one end away from the hand hole 4, and a plug-in frame 15 is provided below the backrest 2 to cooperate with the snap-in groove 14. A pair of slidable backrest connectors 16 are provided in the plug-in frame 15, and connector reset springs 17 are connected to the opposite sides of the pair of backrest connectors 16. Connector limiting columns 18 are respectively provided on the opposite sides of the pair of backrest connectors 16. The connector limiting columns 18 respectively pass through the plug-in frame 15 and are connected with the connector limiting holes 19 in the snap-in groove 14. The plug-in frame 15 and the backrest connector 16 are also provided with interconnected backrest connection hand holes 20.

[0041] The backrest 2 can be easily separated from the base 1 by plugging in and out, and by quick installation and removal. The backrest 2 can be directly lifted from the base 1 by pressing the connector on the backrest 2 with your fingers, without laying it down, which is very convenient. Most of the requirements for child seats in different markets are similar, with only some parts being different. Flexible assembly can be used to sell to different markets, such as using the same backrest but replacing bases of different heights, which can greatly save production management costs. Fig.15 Shown is a schematic diagram of a backrest 2 provided on a height-enhancing seat cushion in the American standard.

[0042] In this embodiment, the backrest 2 is built with a pair of backrest connectors 16 distributed on the left and right. There is a connector reset spring 17 between the inner square ends of the left and right backrest connectors 16. The connector reset spring 17 squeezes the backrest connector 16 toward the two sides of the backrest, so that the outer cylindrical ends of the backrest connector 16 (the connector limit column 18) pass through the connector limit holes 19 on the backrest and the upper base, respectively, to connect the two. The backrest connector 16 is provided with a backrest buckle hand groove (the backrest connection hand hole 20) toward the front of the seat. Pressing the backrest buckle hand groove can make the connector limit column 18 disengage from the connector limit hole 19 of the upper base 102, thereby realizing the separation of the base 1 and the backrest 2.

[0043] The plug-in frame 15 can not only be plugged into the snap-in groove 14 to form a connection that supports and connects the backrest 2, but also can utilize its internal space to provide a pair of movable backrest connectors 16, allowing the pair of backrest connectors 16 to move toward or away from each other inside it to achieve the separation and connection operation of the backrest and the base.

[0044] Further, combined with Figures 9 to 12 As shown, the FIX assembly includes a pair of FIX bodies 21 slidably connected to the lower cover of the lower base 101, and a cross bar 22 connecting the pair of FIX bodies 21; FIX shift plates 23 are respectively connected to the cross bars 22 near the FIX bodies 21, and a pair of the FIX shift plates 23 are respectively provided with a number of corresponding FIX shift slots 24, and the FIX shift slots 24 are connected to the FIX shift adjustment mechanism, and one end of the cross bar 22 or the FIX shift plate 23 is also provided with a FIX tension spring 25 connected to the lower cover of the lower base 101.

[0045] The setting of the cross bar 22 can connect the pair of FIX bodies 21 arranged on the left and right into one body so that the two can move synchronously, and the stability of their connection can also be improved; the setting of the pair of FIX shift plates 23 can be connected to the FIX shift adjustment mechanism at the same time to form a synchronous locking or unlocking operation, so that it can adjust the gear synchronously; the setting of the FIX tension spring 25 can pull the pair of FIX bodies 21 to move backward in the unlocked state, so that the pair of FIX bodies 21 can be extended synchronously to connect with the FIX lock on the vehicle.

[0046] Furthermore, the FIX gear adjustment mechanism includes a resettable FIX handle piece 26 arranged on the lower cover of the lower base 101, and a FIX lock hook 28 connected to the FIX handle piece 26; handle bevel grooves 27 are respectively provided at the two corners of the FIX handle piece 26, the FIX lock hook 28 is located between the FIX handle piece 26 and the lower cover of the lower base 101 and is rotatably connected to the lower cover of the lower base 101, a lock hook guide column 2801 is provided on the FIX lock hook 28, and the lock hook guide column 2801 is connected to the handle bevel groove 27, and one end of the FIX lock hook 28 is also provided with a gear hook 2802 connected to the FIX component.

[0047] After the FIX lock hook 28 is rotatably connected to the lower base lower cover 1012, through the cooperation between the lock hook guide column 2801 thereon and the handle bevel groove 27, when the FIX handle piece 26 is pulled, the FIX lock hook 28 can be deflected, thereby separating the gear hook 2802 from the FIX gear slot 24 to adjust the gear position.

[0048] Furthermore, a connecting ear piece 2803 is provided at one end of the FIX lock hook 28 away from the gear hook 2802, and a lock hook reset tension spring 30 is connected to the lower cover of the lower base, so that the FIX lock hook 28 can be automatically reset when the FIX handle piece 26 is released, and the gear hook 2802 is connected to a FIX gear slot 24 again to form a locking relationship; the FIX handle piece 26 is also provided with a handle reset spring 29 connected to the lower base at one end away from the FIX lock hook 28, which can automatically reset the FIX handle piece 26; the FIX handle piece 26 is also provided with a handle hole 2601 for convenient pulling of the FIX handle piece 26, and the handle hole is also close to the hand hole of the lower cover of the lower base.

[0049] In this embodiment, the FIX assembly is subjected to the backward tension of two FIX tension springs fixed on the lower cover of the lower base, and the left and right trapezoidal ends of the FIX lock hook 28 are respectively stuck in the left and right trapezoidal gears of the FIX gear slot to limit the FIX assembly from popping out to the rear of the base. The center of the FIX lock hook 28 is fixed on the vertical pin shaft of the lower cover of the lower base and can rotate horizontally around the vertical pin shaft. The tail end of the FIX lock hook 28 is subjected to the forward tension of the lock hook reset tension spring 30 fixed to the lower base to prevent the FIX lock hook 28 from rotating out of the FIX gear slot 24. The front end of the FIX lock hook 28 has a vertical cylinder (the lock hook guide column 2801), which is located in the handle inclined groove 27. Pull the FIX handle 26, and the handle bevel groove 27 drives the trapezoidal end of the FIX lock hook 28 (the gear hook) to rotate out from the FIX gear slot 24. After the FIX assembly is unlocked, it pops out to the rear end of the FIX under the action of the FIX tension spring 25. Release the FIX handle 26, and under the action of the lock hook reset tension spring 30 and the handle reset spring 29, the gear hook of the FIX lock hook 28 is rotated into the FIX gear slot 24 again, thereby achieving FIX gear locking.

[0050] When the FIX lock hook 28 is locked in the FIX gear slot 24, press the outer end of the FIX body, the FIX gear slot 24 can push the FIX lock hook 28 to rotate outward from the trapezoidal gear clockwise until it enters the next trapezoidal gear. At the same time, the lock hook guide column 2801 of the FIX lock hook 28 will push the FIX handle 26 to partially pop out and reset forward, so that the FIX can be pushed into the base one gear at a time. This function is used to fit the child seat back to the car seat back after the booster seat FIX is riveted to the car seat.

[0051] However, when the FIX lock hook 28 is locked in the FIX gear slot, the outer end of the FIX body is pulled outward, and the FIX gear slot 24 cannot drive the FIX lock hook 28 to rotate counterclockwise from the trapezoidal gear, because when the FIX lock hook rotates counterclockwise, its lock hook guide column 2801 will push the FIX handle 26 backward, and the rear end of the FIX handle 26 is blocked by the upright pin shaft of the FIX lock hook and cannot move backward. Therefore, when the outer end of the FIX body is pulled backward, the FIX body will not move. This function is to prevent the booster seat from sliding toward the front end of the car seat during normal driving or collision, thereby causing a safety hazard.

[0052] Furthermore, the FIX handle piece 26 is provided with a rectangular limiting hole 2602 in the area between a pair of the handle bevel grooves 27, and two limiting cylinders 31 are provided on the lower base lower cover 1012. The limiting cylinders 31 are located in the rectangular limiting holes 2602, which can limit the movement range of the FIX handle piece 26 to avoid excessive relative movement.

[0053] Further, combined with Figure 16 to Figure 18As shown, the backrest 2 is also provided with an adjustable headrest 3, and the backrest 2 is provided with a plurality of height limiting gear holes 32. The back of the headrest 3 is connected with a headrest adjusting buckle 33, and the headrest adjusting buckle 33 is connected with a headrest locking block frame 35 through a buckle long rod 34. A slidable headrest locking block 36 is connected in the headrest locking block frame 35 through a headrest inclined groove 3501 and a headrest locking block guide column 3601. The headrest locking block 36 is connected to the height limiting gear hole 32, and the buckle long rod 34 is also provided with a headrest buckle reset spring 37 connected with the backrest 2 near the headrest locking block frame 35.

[0054] By pulling the handle end of the headrest adjustment handle 33, the headrest inclined groove 3501 at the other end drives the headrest locking block 36 to disengage from the height limiting gear hole 32 of the backrest 2, thereby realizing the headrest gear unlocking, and releasing the headrest adjustment handle 33, the headrest locking block 36 enters the height limiting gear hole 32 of the backrest again under the action of the headrest handle reset spring 37, realizing the headrest height locking.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A child booster seat for a car, comprising a base and a backrest arranged on the base, characterized in that: The base includes a lower base, a slidably adjustable upper base is provided on the lower base to adjust the lying angle of the backrest, the backrest is detachably mounted on one end of the upper base, the lower base is provided with a lying angle limiting gear, and the upper base is provided with a locking opening and closing mechanism adapted for use with the lying angle limiting gear; FIX components are also provided on both sides of the lower base, and a FIX gear position adjusting mechanism for connecting and controlling the FIX components is provided in the lower base; hand holes extending outward are respectively provided at the mating surfaces of the lower base and the upper base and at the lower cover of the lower base, and the locking opening and closing mechanism or the FIX gear position adjusting mechanism is respectively controlled in the hand holes.

2. The child booster seat for automobiles according to claim 1, characterized in that: The lower cover of the upper base is provided with a plurality of upper base lower cover slide grooves, the upper cover of the lower base is provided with a plurality of pin shaft fixing seats, the pin shaft fixing seats are provided with connecting pins, the pin shaft fixing seats pass upward through the upper base lower cover slide grooves and can slide along the upper base lower cover slide grooves, and the connecting pins are located above the upper base lower cover slide grooves.

3. The child booster seat for automobiles according to claim 1, characterized in that: The lying angle limiting gear comprises a lying angle gear area arranged on the upper cover of the lower base, and a plurality of gear holes are arranged in the lying angle gear area at intervals along the sliding direction; the lying angle gear area protrudes upward, and a gear area limiting groove for accommodating the upward protruding part of the lying angle gear area is provided under the lower cover of the upper base.

4. The child booster seat for automobiles according to claim 1, characterized in that: The locking opening and closing mechanism includes a resettable buckle piece arranged in the upper base, the buckle piece includes a buckle part, and a buckle lock block frame connected to the other end of the buckle part, the side wall of the buckle lock block frame is provided with a buckle bevel groove, the buckle lock block frame is provided with a base lock block, the side wall of the base lock block is provided with a lock block guide column connected to the buckle bevel groove, and a lying angle lock pin used in conjunction with the lying angle limiting gear is also provided under the base lock block.

5. The child booster seat for automobiles according to claim 4, characterized in that: A hand reset spring connected to the lower cover of the upper base is provided at the bottom of the hand piece, the hand portion is arranged above the hand hole, and a hand groove is provided on the lower cover of the upper base corresponding to the hand portion.

6. The child booster seat for automobiles according to claim 1, characterized in that: The upper base is provided with a snap-in groove opening upward at one end away from the hand hole, and a plug-in frame cooperating with the snap-in groove is provided below the backrest, a pair of slidable backrest connectors are provided in the plug-in frame, and connector reset springs are connected to the opposite sides of the pair of backrest connectors, and connector limiting columns are respectively provided on the opposite sides of the pair of backrest connectors, and the connector limiting columns respectively pass through the plug-in frame and are connected with the connector limiting holes in the snap-in groove, and the plug-in frame and the backrest connector are also provided with interconnected backrest connection hand holes.

7. The child booster seat for automobiles according to claim 1, characterized in that: The FIX assembly includes a pair of FIX bodies slidably connected to the lower cover of the lower base, and a cross bar connecting the pair of FIX bodies; FIX shift plates are respectively connected to the cross bars near the FIX bodies, and a pair of FIX shift plates are respectively provided with a number of corresponding FIX shift slots, and the FIX shift slots are connected to the FIX shift adjustment mechanism; one end of the cross bar or the FIX shift plate is also provided with a FIX tension spring connected to the lower cover of the lower base.

8. The child booster seat for automobiles according to claim 1, characterized in that: The FIX gear position adjustment mechanism includes a resettable FIX handle piece arranged on the lower cover of the lower base, and a FIX lock hook connected to the FIX handle piece; handle bevel grooves are respectively provided at the two corners of the FIX handle piece, the FIX lock hook is located between the FIX handle piece and the lower cover of the lower base and is rotatably connected to the lower cover of the lower base, a lock hook guide column is provided on the FIX lock hook, and the lock hook guide column is connected to the handle bevel groove, and a gear hook connected to the FIX component is also provided at one end of the FIX lock hook.

9. The child booster seat for automobiles according to claim 8, characterized in that: A connecting ear is provided at one end of the FIX lock hook away from the gear hook, and a lock hook reset tension spring is connected between the connecting ear and the lower cover of the lower base. A handle reset spring connected to the lower base is also provided at one end of the FIX handle piece away from the FIX lock hook; a handle hole is also provided on the FIX handle piece.

10. The child booster seat for automobiles according to claim 1, characterized in that: The backrest is also provided with an adjustable headrest, the backrest is provided with a plurality of height limiting gear holes, the back of the headrest is connected with a headrest adjusting buckle, the headrest adjusting buckle is connected with a headrest locking block frame through a long buckle rod, a slidable headrest locking block is connected in the headrest locking block frame through a headrest oblique groove, and the headrest locking block is connected to the height limiting gear holes.

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