Dual-purpose seat for adults and children and using method thereof

Abstract

The invention provides a dual-purpose seat for adults and children and a using method thereof.The dual-purpose seat for adults and children comprises a fixing seat, armrests are fixedly installed on the left side and the right side of the fixing seat, a backrest is fixedly installed on the rear side of the fixing seat, a lifting seat is arranged at the front end of the fixing seat, a sliding block is arranged at the lower end of the lifting seat, and a limiting frame is fixedly installed at the lower end of the fixing seat; an adjusting lead screw is arranged on the inner side of the limiting frame, a transmission box is fixedly installed at the lower end of the limiting frame, a worm gear is arranged on the inner side of the transmission box, a worm is connected to the side of the worm gear in a meshed mode, a supporting frame is arranged on the outer side of the transmission box, rocking handles are arranged on the left side and the right side of the supporting frame, a fixing frame is fixedly installed on the outer side of the backrest, and a rotating plate is arranged above the backrest. The lifting seat can be converted into the pedal plate, the area of the seat surface is reduced, the rotating plate can also serve as a dining table, a child is prevented from accidentally sliding off through the protection belt arranged in the through hole in a penetrating mode, the sitting safety is improved, and a user can complete shape conversion of the seat without complex tools or excessive physical labor.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, and in particular to a dual-purpose adult and child chair and its method of use. Background Technology

[0002] As one of the most basic and widely used pieces of furniture in daily life, chairs are widely used in various scenarios such as homes, offices, restaurants, and transportation. In particular, families with infants and young children often need to be equipped with special children's chairs.

[0003] For example, patent number CN223081394U discloses a children's dining chair, including a chair body. A fixed armrest is fixedly connected to one side of the seat surface of the chair body. A horizontal plate is rotatably connected to the top of the fixed armrest, and a vertical plate of the fixed armrest abuts against the horizontal table. A vertical rotating plate is rotatably connected to the end of the horizontal table away from the fixed armrest, and the bottom of the vertical rotating plate abuts against the seat surface of the chair body. A hand-tightening bolt is threaded to the bottom of the vertical rotating plate, and the chair body has a notch adapted to accommodate the hand-tightening bolt. Several placement plates are inserted into the horizontal table, and each placement plate has a placement hole. This children's dining chair reduces the difficulty of feeding young children. For example, patent number CN222751739U discloses a children's chair, including a chair frame. The chair frame includes a chair frame body and a surrounding frame disposed on the chair frame body. The surrounding frame is angle-adjustable and locked at least in a first working position by an angle adjustment mechanism, allowing the seat and the surrounding frame to be detachably connected. This provides a new installation method between the seat and the chair frame. An angle-adjustable surrounding frame is provided on the chair frame. Fixing the surrounding frame at an angle constitutes the first working position, matching the shape of the seat, thus facilitating the installation of the seat. When the seat is not installed, the surrounding frame can be folded to reduce the folded volume, or it can be unfolded for independent use, forming a child safety enclosure, toy shelf, etc., thereby making the children's chair frame more harmonious in shape and increasing its functionality. Most existing children's chairs are independent structures, which are bulky, inconvenient to store, and cannot be shared with adult chairs. They not only take up home space but also increase purchase costs. Although some chairs can be height adjusted, their simple structure lacks effective safety protection for young children. Especially in the absence of integrated dining table or automatic seat belt storage function, there are safety hazards such as children slipping or misoperation.

[0004] Therefore, we have made improvements to this and proposed a dual-purpose adult and child car seat and its usage method. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of existing children's chairs being bulky, inconvenient to store, and unable to be shared with adult chairs. These chairs not only occupy home space but also increase purchase costs. Although some chairs can be height adjusted, they lack effective safety protection for young children. In particular, without integrated dining table or automatic seat belt storage functions, there are safety hazards such as children slipping or misoperation.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: A dual-purpose adult and child car seat and its usage method are disclosed to improve the above-mentioned problems.

[0007] The application is as follows: The device includes a fixed base, armrests fixedly installed on both sides of the fixed base, a backrest fixedly installed on the rear side of the fixed base, a lifting seat at the front end of the fixed base, a slider at the lower end of the lifting seat, a limit frame fixedly installed at the lower end of the fixed base, an adjusting screw installed inside the limit frame, a transmission box fixedly installed at the lower end of the limit frame, a worm gear installed inside the transmission box, a worm gear meshing with the side of the worm gear, a support frame installed outside the transmission box, crank handles on both sides of the support frame, a fixed frame fixedly installed on the outer side of the backrest, a rotating plate above the backrest, a rotating frame fixedly installed on the outer side of the rotating plate, two through holes side by side on the surface of the rotating plate, a winding chamber fixedly installed on the left side of the limit frame, a winding roller installed inside the winding chamber, a protective belt wound around the outer side of the winding roller, a snap-fit ​​buckle on the front side of the winding chamber, and a snap-fit ​​seat fixedly installed on the right side of the limit frame.

[0008] As a preferred embodiment of the adult and child dual-purpose seat and its usage method provided by the present invention, the front side of the fixed seat is provided with a groove, the rear side of the lifting seat and the inner side of the groove fit together, and the slider and the lower end of the lifting seat are fixedly connected by a support plate.

[0009] As a preferred embodiment of the adult and child dual-use seat and its usage method provided by the present invention, the limiting frame has a U-shaped structure design, the slider and the inner side of the limiting frame slide against each other, the adjusting screw and the slider are threadedly connected, the upper end of the adjusting screw is rotatably connected to the fixed seat, the lower end of the adjusting screw is rotatably connected to the transmission box, and extends to the inner side of the transmission box and is fixedly connected to the worm gear.

[0010] As a preferred embodiment of the adult and child dual-use seat and its usage method provided by the present invention, the left and right ends of the transmission box are fixedly connected to the support frame, the upper end of the support frame is fixedly connected to the fixed seat and the armrest, two rocker handles are symmetrically arranged on the left and right sides and are rotatably connected to the support frame, and the left and right ends of the worm gear are fixedly connected to the rocker handles.

[0011] In a preferred embodiment of the adult and child dual-purpose seat and its usage method provided by the present invention, the fixed frame, fixed seat, and armrest are fixedly connected. A magnetic strip is fixedly installed on the upper end of the fixed frame. The upper end of the rotating frame and the fixed frame are magnetically connected by the magnetic strip. The lower end of the rotating frame and the armrest are hinged by the connecting seat.

[0012] As a preferred embodiment of the adult and child dual-purpose seat and its usage method provided by the present invention, the left and right ends of the take-up roller and the take-up chamber are rotatably connected by a rotating shaft. A coil spring is provided on the outside of the rotating shaft. One end of the coil spring is fixedly connected to the outside of the rotating shaft, and the other end is fixedly connected to the inner wall of the take-up chamber.

[0013] As a preferred embodiment of the adult and child dual-use seat and its usage method provided by the present invention, a through groove is provided on the front side of the take-up compartment, one end of the protective belt is fixedly connected to the outer side of the take-up roller, and the other end extends through the through groove to the outer side of the take-up compartment and is fixedly connected to the plug buckle. The plug buckle and the plug seat are mutually compatible.

[0014] A method for using a dual-purpose adult and child car seat, including the aforementioned dual-purpose adult and child car seat, is as follows: When used as a children's chair, the worm gear is rotated by turning the crank, and the worm gear meshes with the worm wheel, which drives the adjusting screw to rotate. Since the adjusting screw is threadedly connected to the slider, the slider slides down along the inner side of the limit frame, thereby lowering the lifting seat to the appropriate position to convert it into a foot pedal and reducing the seat area to fit the child's body shape. When used as a children's high chair, or for younger children who are at risk of slipping, the rotating frame is flipped down to a horizontal position around the hinge point between its lower end and the armrest, and placed on the armrest. After the child sits down, the safety belt and buckle are passed through the two through holes on the rotating plate in sequence, and then the buckle is inserted into the buckle seat to lock the safety belt, effectively limiting the child's crotch area and stabilizing the rotating plate to prevent it from accidentally tipping over, thus improving riding safety. At this time, the rotating plate can also be used as a dining table. When used as an adult seat, release the locking of the plug buckle and the plug seat, and pull the protective belt out of the through hole. Under the rebound of the coil spring, the take-up roller will automatically rotate and retract the protective belt into the take-up compartment. Then, lift the rotating plate up to the top of the backrest. At this time, the rotating frame and the fixed frame are attracted and fixed by the magnetic strip, completing the reset of the upper structure. Then, turn the rocker in the opposite direction to drive the lifting seat to rise through the transmission mechanism until its top surface is flush with the fixed seat, restoring it to a complete adult seat surface that fits the adult body shape and usage needs.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By incorporating components such as worm gears, worm shafts, adjusting screws, and sliders, the adjustable seat can be lowered to a suitable position to transform into a footrest, reducing the seat area to fit children's body types. It can function as a children's high chair, or for younger children at higher risk of slipping. The rotating platform can also double as a dining table, and safety straps are threaded through perforations to prevent accidental falls, improving seating safety. The crank-driven transmission system makes height adjustment convenient and quick, and the magnetic design of the rotating frame allows for rapid resetting of the rotating platform. Users can easily transform the seat without complicated tools or excessive physical effort, saving space and cost associated with purchasing an additional children's high chair, while also improving home space utilization. It is suitable for the multi-member, multi-functional needs of modern families. Attached Figure Description

[0016] Figure 1 The illustration shows a three-dimensional structure of the adult and child dual-purpose seat of the present invention. Figure 1 ; Figure 2 The illustration shows a three-dimensional structure of the adult and child dual-purpose seat of the present invention. Figure 2 ; Figure 3 The illustration shows a three-dimensional structure of the adult and child dual-purpose seat of the present invention. Figure 3 ; Figure 4 The illustration shows a three-dimensional structure of the adult and child dual-purpose seat of the present invention. Figure 4 ; Figure 5 The illustration shows a three-dimensional structure of the adult and child dual-purpose seat of the present invention. Figure 5 ; Figure 6 The diagram shown is a three-dimensional cross-sectional view of the transmission box of the present invention. Figure 7 The diagram shown is a three-dimensional structural schematic of the lifting seat and slider of the present invention; Figure 8 The diagram shown is a schematic representation of the internal structure of the winding chamber of this invention.

[0017] The image shows: 1. Fixed base; 2. Armrest; 3. Backrest; 4. Lifting base; 5. Slider; 6. Limit frame; 7. Adjusting screw; 8. Transmission box; 9. Worm gear; 10. Worm; 11. Support frame; 12. Crank handle; 13. Fixed frame; 131. Magnetic strip; 14. Rotating plate; 15. Rotating frame; 16. Through hole; 17. Take-up compartment; 171. Through slot; 18. Take-up roller; 181. Rotating shaft; 182. Coil spring; 19. Protective belt; 20. Plug-in buckle; 21. Plug-in base. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] Example 1 Please refer to Figure 1-8A dual-purpose adult and child seat and its usage method include a fixed seat 1, armrests 2 fixedly installed on the left and right sides of the fixed seat 1, a backrest 3 fixedly installed on the rear side of the fixed seat 1, a lifting seat 4 provided at the front end of the fixed seat 1, a slider 5 provided at the lower end of the lifting seat 4, a limit frame 6 fixedly installed at the lower end of the fixed seat 1, an adjusting screw 7 provided on the inner side of the limit frame 6, a transmission box 8 fixedly installed at the lower end of the limit frame 6, a worm gear 9 provided on the inner side of the transmission box 8, a worm 10 meshing with the side of the worm gear 9, a support frame 11 provided on the outer side of the transmission box 8, crank handles 12 provided on the left and right sides of the support frame 11, a fixed frame 13 fixedly installed on the outer side of the backrest 3, a rotating plate 14 provided above the backrest 3, a rotating frame 15 fixedly installed on the outer side of the rotating plate 14, two through holes 16 arranged side by side on the surface of the rotating plate 14, a winding chamber 17 fixedly installed on the left side of the limit frame 6, and a winding chamber 17 with two through holes 16 arranged side by side on the inner side of the winding chamber 17. A take-up roller 18 is provided, with a protective strip 19 wound around its outer side. A snap-fit ​​buckle 20 is provided on the front side of the take-up chamber 17. A snap-fit ​​seat 21 is fixedly installed on the right side of the limiting frame 6. A groove is provided on the front side of the fixed seat 1. The rear side of the lifting seat 4 and the inner side of the groove are in contact with each other. The slider 5 and the lower end of the lifting seat 4 are fixedly connected by a support plate. The limiting frame 6 has a U-shaped structure design. The slider 5 and the inner side of the limiting frame 6 are in sliding contact. The adjusting screw 7 is threadedly connected to the slider 5. The upper end of the adjusting screw 7 is rotatably connected to the fixed seat 1. The lower end of the adjusting screw 7 is rotatably connected to the transmission box 8 and extends to the inner side of the transmission box 8 and is fixedly connected to the worm gear 9. The left and right ends of the transmission box 8 are fixedly connected to the support frame 11. The upper end of the support frame 11 is fixedly connected to the fixed seat 1 and the handrail 2. Two crank handles 12 are symmetrically arranged on the left and right sides and are rotatably connected to the support frame 11. The left and right ends of the worm gear 10 are fixedly connected to the crank handles 12.

[0027] Implementation process: By turning the crank 12, the worm 10 is driven to rotate. The worm 10 meshes with the worm wheel 9, which drives the adjusting screw 7 to rotate. Since the adjusting screw 7 is threadedly connected to the slider 5, the slider 5 is driven to slide down along the inner side of the limit frame 6, thereby driving the lifting seat 4 to descend to a suitable position to convert it into a foot pedal and reduce the seat area to fit the child's body shape.

[0028] Benefits of implementation: By setting up a transmission and adjustment mechanism consisting of a worm gear 9, a worm 10, an adjusting screw 7, and a slider 5, the height adjustment seat 4 can be raised and lowered smoothly and precisely. When used as a child chair, the height adjustment seat 4 can be lowered to a suitable height and converted into a footrest. At the same time, the seat surface area is effectively reduced, better conforming to the child's body shape and improving riding comfort and safety. The crank 12, as an external operating component, drives the adjusting screw 7 to rotate through the meshing transmission of the worm gear 10 and the worm wheel 9, thereby driving the slider 5 to slide along the limit frame 6. The entire adjustment process is labor-saving, stable, and has a self-locking function to prevent the height adjustment seat 4 from accidentally slipping during use. This transmission system has a compact structure and is easy to operate. Seat mode switching can be completed quickly without tools, significantly improving the user experience and daily convenience.

[0029] Example 2 The fixed frame 13 is fixedly connected to the fixed base 1 and the handrail 2. A magnetic strip 131 is fixedly installed on the upper end of the fixed frame 13. The upper end of the rotating frame 15 is magnetically connected to the fixed frame 13 through the magnetic strip 131. The lower end of the rotating frame 15 is hinged to the handrail 2 through the connecting seat. The left and right ends of the take-up roller 18 and the take-up chamber 17 are rotatably connected through the rotating shaft 181. A coil spring 182 is provided on the outer side of the rotating shaft 181. One end of the coil spring 182 is fixedly connected to the outer side of the rotating shaft 181, and the other end is fixedly connected to the inner wall of the take-up chamber 17. A through groove 171 is opened on the front side of the take-up chamber 17. One end of the protective belt 19 is fixedly connected to the outer side of the take-up roller 18, and the other end extends to the outer side of the take-up chamber 17 through the through groove 171 and is fixedly connected to the plug buckle 20. The plug buckle 20 and the plug seat 21 are mutually compatible.

[0030] Implementation process: Flip the rotating frame 15 downwards around the hinge point between its lower end and the armrest 2 to a horizontal position, and place it on the armrest 2. After the child is seated, pass the safety belt 19 and the buckle 20 through the two through holes 16 on the rotating plate 14 in sequence, and then insert the buckle 20 into the buckle seat 21 to lock the safety belt, effectively limit the child's crotch area, and stabilize the rotating plate 14 to prevent it from accidentally flipping over, thus improving riding safety. At this time, the rotating plate 14 can also be used as a dining table.

[0031] Benefits of implementation: When used as a children's high chair, or for younger children who are at risk of slipping, the rotating platform 14 can be flipped down and placed horizontally on the armrest 2, serving as a dining table for children to eat. At the same time, the safety belt 19 can effectively restrain the child's crotch, significantly reducing the risk of slipping and improving overall riding safety. In addition, the magnetic connection structure of the rotating frame 15 allows the rotating platform 14 to be easily and securely reset to the top of the backrest 3 when switching back to adult seat mode, taking into account both functionality and ease of use.

[0032] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A dual-purpose adult and child seat, comprising a fixed seat (1), armrests (2) fixedly installed on the left and right sides of the fixed seat (1), and a backrest (3) fixedly installed on the rear side of the fixed seat (1), characterized in that: A lifting seat (4) is provided at the front end of the fixed seat (1), and a slider (5) is provided at the lower end of the lifting seat (4). A limit frame (6) is fixedly installed at the lower end of the fixed seat (1). An adjusting screw (7) is provided on the inner side of the limit frame (6). A transmission box (8) is fixedly installed at the lower end of the limit frame (6). A worm gear (9) is provided on the inner side of the transmission box (8). A worm (10) is meshed with the side of the worm gear (9). A support frame (11) is provided on the outer side of the transmission box (8). A crank (12) is provided on the left and right sides of the support frame (11). The outer side of the backrest (3) is... A fixed frame (13) is fixedly installed. A rotating plate (14) is provided above the backrest (3). A rotating frame (15) is fixedly installed on the outside of the rotating plate (14). Two through holes (16) are opened side by side on the surface of the rotating plate (14). A winding chamber (17) is fixedly installed on the left side of the limiting frame (6). A winding roller (18) is provided on the inside of the winding chamber (17). A protective belt (19) is wound on the outside of the winding roller (18). A plug buckle (20) is provided on the front side of the winding chamber (17). A plug seat (21) is fixedly installed on the right side of the limiting frame (6).

2. The adult and child dual-use car seat according to claim 1, characterized in that: The front side of the fixed seat (1) is provided with a groove, the rear side of the lifting seat (4) and the inner side of the groove fit together, and the slider (5) and the lower end of the lifting seat (4) are fixedly connected by a support plate.

3. The adult and child dual-use car seat according to claim 2, characterized in that: The limiting frame (6) is designed with a U-shaped structure. The slider (5) and the inner side of the limiting frame (6) slide and fit together. The adjusting screw (7) and the slider (5) are threaded together. The upper end of the adjusting screw (7) is rotatably connected to the fixed seat (1). The lower end of the adjusting screw (7) is rotatably connected to the transmission box (8) and extends to the inner side of the transmission box (8) and is fixedly connected to the worm gear (9).

4. The adult and child dual-use car seat according to claim 3, characterized in that: The left and right ends of the transmission box (8) are fixedly connected to the support frame (11), the upper end of the support frame (11) is fixedly connected to the fixed seat (1) and the handrail (2), two rocker handles (12) are symmetrically arranged on the left and right, and are rotatably connected to the support frame (11), and the left and right ends of the worm gear (10) are fixedly connected to the rocker handles (12).

5. The adult and child dual-use car seat according to claim 4, characterized in that: The fixed frame (13) is fixedly connected to the fixed base (1) and the handrail (2). A magnetic strip (131) is fixedly installed on the upper end of the fixed frame (13). The upper end of the rotating frame (15) and the fixed frame (13) are magnetically connected by the magnetic strip (131). The lower end of the rotating frame (15) and the handrail (2) are hinged by the connecting seat.

6. The adult and child dual-use car seat according to claim 5, characterized in that: The left and right ends of the take-up roller (18) and the take-up bin (17) are rotatably connected by a rotating shaft (181). A coil spring (182) is provided on the outside of the rotating shaft (181). One end of the coil spring (182) is fixedly connected to the outside of the rotating shaft (181), and the other end is fixedly connected to the inner wall of the take-up bin (17).

7. The adult and child dual-use car seat according to claim 6, characterized in that: A through groove (171) is provided on the front side of the take-up bin (17). One end of the protective belt (19) is fixedly connected to the outside of the take-up roller (18), and the other end extends through the through groove (171) to the outside of the take-up bin (17) and is fixedly connected to the plug buckle (20). The plug buckle (20) and the plug seat (21) are compatible with each other.

8. A method of using a dual-purpose adult and child car seat, characterized in that: The adult-child dual-use seat according to any one of claims 1-7 is operated as follows: When used as a children's chair, the worm gear (10) is rotated by turning the rocker arm (12). The worm gear (10) meshes with the worm wheel (9), which drives the adjusting screw (7) to rotate. Since the adjusting screw (7) is threadedly connected to the slider (5), the slider (5) slides down along the inside of the limit frame (6), thereby driving the lifting seat (4) to descend to a suitable position to convert it into a foot pedal and reduce the seat area to fit the child's body shape. When used as a children's dining chair, or for younger children who are at risk of slipping, the rotating frame (15) is flipped down to the horizontal around the hinge point between its lower end and the armrest (2) and placed on the armrest (2). After the child sits down, the safety belt (19) and the buckle (20) are passed through the two through holes (16) on the rotating plate (14) in sequence, and then the buckle (20) is inserted into the buckle seat (21) to lock the safety belt, effectively limit the child's crotch, and fix the rotating plate (14) stably to prevent it from accidentally flipping over and improve the safety of riding. At this time, the rotating plate (14) can also be used as a dining table. When used as an adult seat, release the locking of the plug buckle (20) and the plug seat (21), and pull the protective belt (19) out of the through hole (16). Under the rebound action of the coil spring (182), the take-up roller (18) rotates automatically and retracts the protective belt (19) into the take-up chamber (17). Then, lift the rotating plate (14) up to the upper end of the backrest (3). At this time, the rotating frame (15) and the fixed frame (13) are attracted and fixed by the magnetic strip (131) to complete the reset of the upper structure. Then, turn the rocker handle (12) in the opposite direction to drive the lifting seat (4) to rise through the transmission mechanism until its top surface is flush with the fixed seat (1) and it is restored to a complete adult seat surface, which is suitable for adult body shape and usage needs.

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