An adjustable base height booster child safety seat

Abstract

The application discloses a height-adjustable booster child safety seat, which comprises a backrest, a booster cushion base and a bottom cover, the bottom of the booster cushion base is hollow, the bottom of the booster cushion base is provided with a mounting shell, the backrest is rotatably arranged on one side of the rear part of the booster cushion base, the bottom cover is arranged on the bottom of the booster cushion base, the two sides of the booster cushion base are provided with adjusting assemblies corresponding to the mounting shell, the bottom cover is arranged corresponding to the bottom of the mounting shell, the adjusting assemblies are used for positioning the bottom cover relative to the booster cushion base, the bottom of the booster cushion base and the top of the bottom cover are both provided with rebound assemblies, the rear ends of the two sides of the booster cushion base are provided with adjusting grooves, and seat rigid connection kits are arranged at the adjusting grooves. The height of the booster cushion base can be effectively adjusted, and the operation convenience and use stability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of child safety seats, in particular to a height-adjustable base height booster child safety seat. BACKGROUND

[0002] The main purpose of children using a booster chair when riding is to enable children to use adult safety belts correctly, thereby avoiding harm to children in the event of an emergency. The design of the booster chair is usually a booster seat, which aims to improve the sitting posture of children so that they can use the safety belt in the car. Like a booster cushion, a booster chair avoids soft parts of the child's body and avoids injury. In addition, the booster chair has the advantages of side impact protection and back protection. In the event of a side collision, the booster chair can provide comprehensive protection, reducing the impact on the child's head displacement, chest pressure and abdominal pressure. In summary, children use a booster chair when riding to enable them to use adult safety belts correctly and improve their safety when riding. At the same time, the booster chair also has the functions of side impact protection and back protection, and can provide comprehensive protection in an emergency.

[0003] Since the booster chair is generally suitable for children with a height of 100-150 cm, children of different heights need to adjust the height of the base when riding. It is generally recommended to use a booster cushion when the child's height is less than 150 cm or the weight is less than 36 kg to ensure their safety when riding. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, and to provide a height-adjustable base height booster child safety seat.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a height-adjustable base height booster child safety seat, comprising a backrest, a booster cushion base and a bottom cover, the bottom of the booster cushion base is hollow, the bottom of the booster cushion base is provided with a mounting shell, the backrest is rotatably arranged on one side of the rear part of the booster cushion base, the bottom cover is arranged on the bottom of the booster cushion base, the booster cushion base is provided with an adjusting assembly on both sides of the inside corresponding to the mounting shell, the bottom cover is provided corresponding to the bottom of the mounting shell, the adjusting assembly is used for positioning the bottom cover relative to the booster cushion base, the booster cushion base is provided with a rebound assembly around the bottom and corresponding to the top of the bottom cover, the rebound assembly is used for adjusting the height of the booster cushion base relative to the bottom cover, the booster cushion base is provided with an adjusting groove on both sides of the rear end, the adjusting groove is provided with a seat rigid connection kit, and the seat rigid connection kit is used for connecting the booster cushion base and the seat in the car.

[0006] In the above technical scheme, when the safety seat is used, the backrest and the height pad base can be used separately according to actual needs, and the backrest can be angle-adjusted when used. When the height pad base is used, the height pad base is separated from the bottom cover through the adjusting assembly, the height of the height pad base relative to the bottom cover is adjusted through the rebound assembly after separation, and the height pad base is fixed to the bottom cover again through the adjusting assembly, so that the use stability of the height pad base is ensured. The height pad base is installed on the rear seat of the car for the child to safely ride through the seat rigid connection kit and the car seat interface connection, and the seat rigid connection kit can be adjusted in connection distance and angle, so that the adaptability of the height pad base connected to the rear seat of the car is improved.

[0007] On the basis of the above technical scheme, preferably, the adjusting assembly comprises an adjusting button and a first reset spring. The adjusting button is slidably arranged inside the height pad base and corresponds to the top of the mounting shell. The middle part of the adjusting button is provided with a reset hole. The inside of the reset hole in the height pad base is provided with a limiting piece. The first reset spring is arranged in the reset hole, and the two ends of the first reset spring are connected with the side surface of the limiting piece and the other side of the reset hole, respectively. The bottom cover is arranged at the bottom of the height pad base and wraps the mounting shell.

[0008] On the basis of the above technical scheme, preferably, the adjusting assembly further comprises a push rod and a guide hole column. The guide hole column is provided with a plurality of guide hole columns. The guide hole column is arranged at the bottom of the adjusting button and corresponds to the inside of the mounting shell. The mounting shell is provided with a first displacement opening through the hole opening of the guide hole column. The push rod is provided with a plurality of push rods, which are arranged in the hole opening of the guide hole column, respectively. The two ends of the plurality of push rods extend into the first displacement opening, respectively, and follow the displacement of the adjusting button. The bottom cover is provided with a tree-shaped channel on the front and rear sides corresponding to the first displacement opening. The two ends of the plurality of push rods extend into one of the channels of the tree-shaped channel, respectively.

[0009] In the above technical scheme, after the backrest is separated from the rear end of the booster cushion base, the adjusting button is pressed to move the adjusting button in the booster cushion base and move the guide hole column, move the push rod to the lower channel of the tree-shaped channel at the bottom cover, move the booster cushion base relative to the bottom cover by the rebound assembly, move the push rod to the upper channel of the tree-shaped channel, and release the adjusting button. The first reset spring is reset in the reset hole relative to the limiting sheet, so that the push rod enters the upper channel of the tree-shaped channel, the height of the booster cushion base relative to the bottom cover is increased, and the booster cushion base is effectively stabilized on the bottom cover.

[0010] On the basis of the above technical scheme, preferably, the seat rigid connection kit comprises two rigid connection sheets, a connecting shaft, a cover plate, a anti-dropping guide column, a second reset spring and a limiting button, the cover plate is provided at the rear end of the booster cushion base, the anti-dropping guide column is provided with a plurality of anti-dropping guide columns and is arranged at the top of the cover plate, the second reset spring is sleeved outside the anti-dropping guide column, the limiting button is arranged on the cover plate, and the anti-dropping guide column penetrates the limiting button. A sliding groove is arranged at the top of the cover plate corresponding to the lower side of the limiting button, a plurality of inclined grooves are arranged at the bottom of the limiting button corresponding to the sliding groove, the connecting shaft is arranged in one of the inclined grooves corresponding to the sliding groove, and the two rigid connection sheets are connected with the two ends of the connecting shaft, respectively. The two rigid connection sheets are connected with the rear seat of the automobile.

[0011] In the above technical scheme, the booster cushion base is arranged on the rear seat of the automobile through the connection of the two rigid connection sheets with the rear seat of the automobile, the length of the rigid connection sheet can be adjusted through the horizontal placement position of the booster cushion base, the rigid connection sheet is pulled to lift the cover plate in one of the inclined grooves, the connecting shaft is moved to the other inclined groove, and the cover plate is reset by the second reset spring at the anti-dropping guide column. The connecting shaft is stably arranged in the inclined groove and the sliding groove, and the angle of the rigid connection sheet can be changed through the connecting shaft due to the height adjustment of the booster cushion base.

[0012] On the basis of the above technical scheme, preferably, the seat rigid connection kit is arranged at the rear end of the bottom cover, and the seat rigid connection kit and the rear seat of the automobile are in a horizontal position.

[0013] On the basis of the above technical scheme, preferably, an arc-shaped accommodation hole is arranged at the rear part of the height-increasing cushion base, a rotating shaft is arranged at the bottom of the backrest, and the rotating shaft is rotatably connected in the arc-shaped accommodation hole. The rotating shaft can be used to adjust the angle of the backrest, and the rotating shaft can be separated and used in the arc-shaped accommodation hole. The rotating shaft can also be used to support the adjusting button in the arc-shaped accommodation hole.

[0014] On the basis of the above technical scheme, preferably, the rebound assembly comprises guide shafts, an ejection spring and an auxiliary cylinder. The guide shafts are arranged around the bottom of the height-increasing cushion base. The auxiliary cylinder is arranged around the top of the bottom cover. The guide shafts are inserted into the auxiliary cylinder, and the ejection spring is arranged around the guide shafts.

[0015] In the above technical scheme, when the height-increasing cushion base is initially separated from the bottom cover, the ejection spring acts on the auxiliary cylinder to form an elastic force, which pushes the height-increasing cushion base upwards to adjust the height of the height-increasing cushion base. The height-adjusted height-increasing cushion base is stably connected to the bottom cover through the adjusting assembly.

[0016] On the basis of the above technical scheme, preferably, an operation hole is arranged at the front end of the height-increasing cushion base corresponding to the adjusting button. The adjusting button is slidably connected in the operation hole.

[0017] On the basis of the above technical scheme, preferably, second displacement holes are arranged at the front and back of the adjusting button. Limiting hole columns are arranged in the height-increasing cushion base corresponding to the second displacement holes. The limiting hole columns extend into the second displacement holes.

[0018] On the basis of the above technical scheme, preferably, the height-increasing cushion base further comprises positioning bolts. The positioning bolts are arranged around the second displacement holes. The positioning bolts are connected to the holes in the limiting hole columns corresponding to the bottom of the second displacement holes. The positioning bolts do not affect the displacement of the adjusting button, so that the adjusting button can be horizontally adjusted and the position deviation can be avoided.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. When the safety seat is used, the backrest and the height-increasing cushion base can be separated and used according to actual needs. The backrest can be angle-adjusted during use. When the height-increasing cushion base is used, the height-increasing cushion base is separated from the bottom cover through the adjusting assembly when the height of the height-increasing cushion base needs to be adjusted. After the separation is completed, the height of the height-increasing cushion base relative to the bottom cover is adjusted through the rebound assembly, and the height-increasing cushion base is fixed to the bottom cover again through the adjusting assembly, so as to ensure the stability of the height-increasing cushion base.

[0021] 2. The height increasing child safety seat of the present invention is installed on the back seat of a car for children to safely ride, and the seat rigid connection kit is connected with the seat interface of the car, and the distance and angle of the seat rigid connection kit can be adjusted, so as to improve the adaptability of the height increasing child safety seat on the back seat of the car. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A three-dimensional view of the height adjustable height increasing child safety seat of the present invention;

[0023] Figure 2 A front view of the height adjustable height increasing child safety seat of the present invention;

[0024] Figure 3 A side view of the height adjustable height increasing child safety seat of the present invention;

[0025] Figure 4 A side sectional view of the height adjustable height increasing child safety seat of the present invention;

[0026] Figure 5 A side sectional view of the height increasing seat base (without bottom cover) of the height adjustable height increasing child safety seat of the present invention;

[0027] Figure 6 A bottom view of the height increasing seat base (without bottom cover) of the height adjustable height increasing child safety seat of the present invention;

[0028] Figure 7 A split view of the height increasing seat base and bottom cover of the height adjustable height increasing child safety seat of the present invention;

[0029] Figure 8 A side sectional view of the height increasing seat base (height not adjusted) of the height adjustable height increasing child safety seat of the present invention;

[0030] Figure 9 A side sectional view of the height increasing seat base (height adjusted) of the height adjustable height increasing child safety seat of the present invention;

[0031] Figure 10 A three-dimensional view of the height increasing seat base (without bottom cover) of the height adjustable height increasing child safety seat of the present invention;

[0032] Figure 11 A three-dimensional view of the bottom cover of the height adjustable height increasing child safety seat of the present invention;

[0033] Figure 12Three-dimensional view of the adjustment key of the adjustable base height booster child safety seat of the present application;

[0034] Figure 13 Connection view of the booster pad base and seat rigid connection kit of the adjustable base height booster child safety seat of the present application;

[0035] Figure 14 Three-dimensional view of the seat rigid connection kit of the adjustable base height booster child safety seat of the present application;

[0036] Figure 15 For Figure 13 Enlarged structural schematic view of A in the middle;

[0037] Figure 16 Connection side view of the seat rigid connection kit and bottom cover of the adjustable base height booster child safety seat of the present application;

[0038] Figure 17 Three-dimensional view of the connection of the seat rigid connection kit and bottom cover of the adjustable base height booster child safety seat of the present application.

[0039] In the figure: booster pad base 1, backrest 2, adjustment groove 3, rigid connection piece 4, rotating shaft 5, adjustment key 6, installation shell 7, first reset spring 8, push rod 9, arc-shaped installation hole 10, guide hole column 11, guide shaft 12, tree-shaped channel 13, bottom cover 14, auxiliary cylinder 15, ejection spring 16, adjustment port 17, limiting piece 18, first displacement port 19, reset hole 20, second displacement port 21, limiting hole column 22, positioning bolt 23, connecting shaft 24, cover plate 25, anti-dropping guide column 26, second reset spring 27, limiting key 28, sliding groove 29, inclined groove 30. DETAILED DESCRIPTION

[0040] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] As Figures 1-15The adjustable height of the base of the application is a height-increasing child safety seat, which comprises a backrest 2, a height-increasing cushion base 1 and a bottom cover 14. The bottom of the height-increasing cushion base 1 is hollow. The bottom of the height-increasing cushion base 1 is provided with a mounting shell 7. The backrest 2 is rotatably arranged on one side of the rear part of the height-increasing cushion base 1. The bottom cover 14 is arranged on the bottom of the height-increasing cushion base 1. The height-increasing cushion base 1 is provided with an adjusting assembly on both sides of the inside corresponding to the mounting shell 7. The bottom cover 14 is arranged corresponding to the bottom of the mounting shell 7. The adjusting assembly is used for positioning the bottom cover 14 relative to the height-increasing cushion base 1. The height-increasing cushion base 1 is provided with a rebound assembly around the bottom corresponding to the top of the bottom cover 14. The rebound assembly is used for height adjustment of the height-increasing cushion base 1 relative to the bottom cover 14. The height-increasing cushion base 1 is provided with an adjusting groove 3 on both sides of the rear end. The seat rigid connection kit is arranged at the adjusting groove 3. The seat rigid connection kit is used for interface connection of the height-increasing cushion base 1 and the seat in the car.

[0042] When the safety seat is used, the backrest 2 and the height-increasing cushion base 1 can be used separately according to actual needs. The backrest 2 can be angle-adjusted when used. When the height-increasing cushion base 1 is used, the height-increasing cushion base 1 is separated from the bottom cover 14 through the adjusting assembly. After separation, the height-increasing cushion base 1 is adjusted in height relative to the bottom cover 14 through the rebound assembly. The height-increasing cushion base 1 is fixed with the bottom cover 14 again through the adjusting assembly, so as to ensure the stability of the height-increasing cushion base 1. The height-increasing cushion base 1 is installed on the rear seat of the car for children to safely ride through the interface connection of the seat rigid connection kit and the seat in the car. The seat rigid connection kit can be adjusted in connection distance and angle, so as to improve the adaptability of the height-increasing cushion base 1 connected on the rear seat of the car.

[0043] As a preferred embodiment, the adjusting assembly comprises the adjusting button 6 and the first reset spring 8, the adjusting button 6 is slidably arranged in the inside of the booster cushion base 1 and is arranged corresponding to the top of the mounting shell 7, the middle part of the adjusting button 6 is provided with the reset hole 20, the inside of the booster cushion base 1 is provided with the limiting piece 18 corresponding to one side of the reset hole 20, the first reset spring 8 is arranged in the reset hole 20 and the two ends of the first reset spring 8 are respectively connected with the side of the limiting piece 18 and the other side of the reset hole 20, the bottom cover 14 is arranged at the bottom of the booster cushion base 1 and wraps the mounting shell 7, the adjusting assembly further comprises the push rod 9 and the guide hole column 11, the guide hole column 11 is arranged at the bottom of the adjusting button 6 and is arranged corresponding to the inside of the mounting shell 7, the mounting shell 7 is provided with the first displacement port 19 corresponding to the hole of the guide hole column 11, the push rod 9 is arranged in the hole of the guide hole column 11, the two ends of the push rod 9 are respectively extended into the first displacement port 19 and are displaced with the adjusting button 6, the bottom cover 14 is provided with the tree-shaped channel 13 corresponding to the first displacement port 19 at the front and back of the two sides, the two ends of the push rod 9 are respectively extended into one of the channels of the tree-shaped channel 13, after the backrest 2 is separated from the rear end of the booster cushion base 1, the adjusting button 6 is pressed, the adjusting button 6 is moved in the booster cushion base 1 and the guide hole column 11 is moved, the push rod 9 is moved to the corner of the channel of the tree-shaped channel 13 at the bottom cover 14 and the booster cushion base 1 is moved upward relative to the bottom cover 14 through the rebound assembly, the push rod 9 is moved to the upper channel of the tree-shaped channel 13 and the adjusting button 6 is released, the push rod 9 is moved into the upper channel of the tree-shaped channel 13 through the reset rebound of the first reset spring 8 relative to the limiting piece 18 in the reset hole 20, the booster cushion base 1 is raised relative to the bottom cover 14 and is effectively stabilized on the bottom cover 14.

[0044] As a preferred embodiment, the seat rigid connection kit comprises two rigid connection pieces 4, a connecting shaft 24, a cover plate 25, anti-dropping guide columns 26, a second reset spring 27 and a limiting button 28. The cover plate 25 is arranged through the rear end of the booster cushion base 1. The anti-dropping guide columns 26 are arranged at the top of the cover plate 25. The second reset spring 27 is arranged outside the anti-dropping guide columns 26. The limiting button 28 is arranged on the cover plate 25, and the anti-dropping guide columns 26 penetrate the limiting button 28. The top of the cover plate 25 is provided with a sliding groove 29 below the limiting button 28. The bottom of the limiting button 28 is provided with a plurality of inclined grooves 30 corresponding to the sliding groove 29. The connecting shaft 24 is arranged in one of the inclined grooves 30 corresponding to the sliding groove 29. The two rigid connection pieces 4 are connected with the two ends of the connecting shaft 24, respectively. The two rigid connection pieces 4 are connected with the interface of the car seat. The booster cushion base 1 is placed on the rear seat of the car through the interface connection between the two rigid connection pieces 4 and the rear seat of the car. The length of the rigid connection piece 4 can be adjusted through the horizontal placement position of the booster cushion base 1. The rigid connection piece 4 is pulled to make the connecting shaft 24 lift the cover plate 25 in one of the inclined grooves 30. The connecting shaft 24 is moved to the other inclined groove 30. The cover plate 25 is reset through the second reset spring 27 at the anti-dropping guide column 26. The connecting shaft 24 is stably arranged in the inclined groove 30 and the sliding groove 29. The height of the booster cushion base 1 is adjusted. The angle of the rigid connection piece 4 can be changed through the connecting shaft 24.

[0045] As a preferred embodiment, the booster cushion base 1 is provided with an arc-shaped mounting hole 10 at the rear part. The backrest 2 is provided with a rotating shaft 5. The rotating shaft 5 is rotatably connected in the arc-shaped mounting hole 10. The angle of the backrest 2 can be adjusted through the rotating shaft 5. The rotating shaft 5 can be used separately in the arc-shaped mounting hole 10. The rotating shaft 5 plays a role of resisting the adjusting button 6 in the arc-shaped mounting hole 10.

[0046] As a preferred embodiment, the rebound assembly comprises a guide shaft 12, an ejection spring 16 and an auxiliary cylinder 15. The guide shaft 12 is arranged at the bottom of the booster cushion base 1. The auxiliary cylinder 15 is arranged at the top of the bottom cover 14. The guide shaft 12 is inserted into the auxiliary cylinder 15. The ejection spring 16 is arranged outside the guide shaft 12 corresponding to the cylinder port of the auxiliary cylinder 15. When the booster cushion base 1 is initially separated from the bottom cover 14, the ejection spring 16 acts on the auxiliary cylinder 15 to form an elastic force. The booster cushion base 1 is lifted upward. The height of the booster cushion base 1 is adjusted. The booster cushion base 1 with the adjusted height is stably connected with the bottom cover 14 through the adjusting assembly.

[0047] As a preferred embodiment, the front end of the booster cushion base 1 is provided with an operation port corresponding to the adjustment button 6, the adjustment button 6 is slidingly connected in the operation port, the front and back of the adjustment button 6 are provided with a second displacement port 21, the booster cushion base 1 is provided with a limiting hole column 22 corresponding to the second displacement port 21, the limiting hole column 22 extends into the second displacement port 21, and the booster cushion base 1 further comprises a positioning bolt 23, the positioning bolt 23 is provided with a plurality of positioning bolts 23, the positioning bolt 23 is connected to the hole in the limiting hole column 22 at the bottom of the second displacement port 21, and the positioning bolt 23 does not affect the displacement of the adjustment button 6, so that the adjustment button 6 can be horizontally adjusted, and position deviation is avoided.

[0048] As shown in Figures 16-17 As a preferred embodiment, the seat rigid connection kit is arranged at the rear end of the bottom cover 14, the seat rigid connection kit keeps a horizontal position with the rear seat interface of the automobile, the cover plate 25 is arranged at the rear end of the bottom cover 14, the two rigid connection pieces 4 are connected with the automobile seat interface, and the rigid connection piece 4 is connected with the rear seat interface of the automobile through the two rigid connection pieces 4, the height adjustment of the booster cushion base 1 is not affected, the two rigid connection pieces 4 do not change the angle with the height adjustment of the booster cushion 1, the length of the rigid connection piece 4 is adjusted, the connecting shaft 24 is lifted to the cover plate 25 in one of the inclined grooves 30 by pulling the rigid connection piece 4, the connecting shaft 24 is moved to the other inclined groove 30, the cover plate 25 is reset by the second reset spring 27 at the anti-disengagement guide column 26, the connecting shaft 24 is stabilized in the inclined groove 30 and the sliding groove 29, bidirectional adjustment is realized by pressing, and unidirectional adjustment is realized by not pressing.

[0049] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A booster seat with an adjustable base height, comprising a backrest, a booster pad base, and a bottom cover, wherein the bottom of the booster pad base is hollow, a mounting shell is provided at the bottom of the booster pad base, the backrest is detachably and rotatably disposed on one side of the rear of the booster pad base, and the bottom cover is disposed at the bottom of the booster pad base, characterized in that, The booster seat base has adjustment components on both sides corresponding to the mounting shell. The bottom cover is provided at the bottom of the mounting shell. The adjustment components are used to separate and position the bottom cover relative to the booster seat base. The booster seat base has spring-loaded components around its bottom and around the top of the bottom cover. The spring-loaded components are used to adjust the height of the booster seat base relative to the bottom cover. The booster seat base has adjustment grooves at both rear ends. Seat rigid connection kits are provided at the adjustment grooves. Seat rigid connection kits are used to connect the booster seat base to the car seat interface. The adjustment assembly includes an adjustment button and a first reset spring. The adjustment button is slidably disposed inside the heightening pad base and is disposed corresponding to the top of the mounting shell. A reset hole is disposed in the middle of the adjustment button. A limit piece is disposed inside the heightening pad base corresponding to one inner side of the reset hole. The first reset spring is disposed inside the reset hole, and the two ends of the first reset spring are respectively connected to the side of the limit piece and the other side of the reset hole. The bottom cover is disposed at the bottom of the heightening pad base and covers the mounting shell. The adjustment assembly further includes push rods and guide posts. Several guide posts are provided, located at the bottom of the adjustment button and corresponding to the inner side of the mounting housing. A first displacement port is provided through the opening of each guide post in the mounting housing. Several push rods are provided, each passing through the opening of a guide post. Both ends of each push rod extend into the first displacement port, moving in tandem with the adjustment button. Tree-shaped channels are provided on the front and back sides of the bottom cover, corresponding to the first displacement ports. Both ends of each push rod extend into one of the channels of the tree-shaped channel, which is a transverse U-shaped channel.

2. The booster seat with adjustable base height according to claim 1, characterized in that, The seat rigid connection kit includes two rigid connecting pieces, a connecting shaft, a cover plate, anti-detachment guide posts, a second return spring, and a limit button. The cover plate is disposed through the rear end of the booster pad base. Several anti-detachment guide posts are provided and distributed around the top of the cover plate. The second return spring is sleeved on the outside of the anti-detachment guide posts. The limit button is disposed on the cover plate, and the anti-detachment guide posts pass through the limit button. A groove is provided on the top of the cover plate corresponding to the bottom of the limit button. Several inclined grooves are provided on the bottom of the limit button corresponding to the groove. The connecting shaft is disposed in one of the inclined grooves corresponding to the groove. The two rigid connecting pieces are respectively connected to both ends of the connecting shaft and are connected to the car seat interface.

3. A booster seat with an adjustable base height according to claim 1, characterized in that, The seat rigid connection kit is located at the rear end of the bottom cover, and the seat rigid connection kit is positioned horizontally with the rear seat interface of the vehicle.

4. A booster seat with an adjustable base height according to claim 1, characterized in that, The height-increasing pad base has an arc-shaped mounting hole at the rear, and the backrest has a pivot at the bottom, which is rotatably connected to the arc-shaped mounting hole.

5. A booster seat with an adjustable base height according to claim 1, characterized in that, The rebound assembly includes guide shafts, ejector springs, and auxiliary cylinders. Several guide shafts are provided and are distributed around the bottom of the heightening pad base. The auxiliary cylinders are provided around the top of the bottom cover. Several guide shafts are inserted into the auxiliary cylinders. The ejector springs are sleeved on the outside of the guide shafts corresponding to the openings of the auxiliary cylinders.

6. A booster seat with an adjustable base height according to claim 1, characterized in that, The front end of the height-increasing pad base has an operating port corresponding to the adjustment button, and the adjustment button is slidably connected inside the operating port.

7. A booster seat with an adjustable base height according to claim 1, characterized in that, The adjustment button has a second displacement port on both the front and back. The heightening pad base has a limit hole corresponding to the second displacement port, and the limit hole extends into the second displacement port.

8. A booster seat with an adjustable base height according to claim 7, characterized in that, It also includes positioning bolts, of which several are provided. The positioning bolts are connected to the bottom of the second displacement port and are connected to the hole at the limiting hole post. The positioning bolts do not affect the displacement of the adjustment button.

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