CN211048916U - Variable growth type children furniture with lifting function - Google Patents

Abstract

The utility model discloses a variable growing children's furniture with raising and lowering functions, include: bedplate, elevating platform, baffle and two sets of U type supports that the front and back symmetry set up, U type support bottom is the arc setting, and is two sets of U type leg joint the bedplate, the elevating platform is connected with first slide bar and second slide bar down, be connected with relative chute seat under the bedplate, the baffle is equipped with the baffle spout that is used for sliding joint first slide bar, and the second slide bar sliding joint is in the open slot of bedplate and stretches into the fixed spout between two sets of chute seats, U type support bottom both sides still are equipped with the connection leg. The utility model discloses the height of elevating platform can be adjusted, and the connection leg has vertical and two sets of mounting means of horizontal direction, makes the utility model discloses have multiple application method, satisfy the use of children different heights period.

Description

Variable growth type children furniture with lifting function

Technical Field

The utility model relates to a children furniture technical field specifically is a variable growing children furniture with raising and lowering functions.

Background

Children's physical development is fast, and height changes greatly, and children's furniture that does not possess the growth nature often can not satisfy the user demand because of the life cycle is too short. Most of the existing children furniture on the market have single function, do not have the function of adjusting the height, or have fixed style and lack the change. Not only can not satisfy the use of children under the different growth height circumstances, also can not adapt to the needs of children's growth in-process psychological change. In addition, the existing furniture for children is not interesting enough, and the requirement that the furniture can be quiet and movable when children learn during playing can not be well met. Therefore, the variable growth type children furniture with the lifting function is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a variable growing children's furniture with raising and lowering functions to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: variable growth child furniture with lifting function, comprising:

the bedplate and the support system who links to each other with it still have the elevating platform, the support system includes fixed part and the part of sliding that links to each other with it, fixed part is including fore-stock, the after-poppet that the symmetry set up and the stiffener of connecting fore-stock and after-poppet, the part of sliding has first slide and second slide, the elevating platform has the desktop, be connected with first slide bar and second slide bar under the desktop, first slide bar with first slide swing joint, the second slide bar with second slide swing joint, the bedplate with fixed part and second slide fixed connection the limiting of the part of sliding the elevating platform can reciprocate for the support system.

Preferably, the symmetry sets up the front bezel with the after-poppet is U type support, and its bottom is the arc, be connected with under the bedplate the second slide, the second slide is including relative first spout and the second spout that sets up, still be equipped with the baffle on the mounting system, first slide is located in the baffle, the second slide bar sliding connection in the open slot of bedplate and stretch into first spout with in the second slide between the second spout, the front bezel with after-poppet bottom both sides all are equipped with the extension leg.

Preferably, the front frame and the rear frame bottom are arcs with the same radian, both sides of the front frame and the rear frame bottom are provided with countersunk holes for extending screws, both sides of the front frame and the rear frame bottom are provided with inserting holes communicated with the countersunk holes, the inserting holes are used for inserting metal connectors, the metal connectors are arranged at one ends of the extension legs connected with the fixing parts, and inner threaded holes for screwing the screws are formed in the metal connectors.

Preferably, the middle part of the lower end of the lifting platform is connected with a first slide rod, the middle part of the side edge of the lifting platform is connected with a second slide rod, the middle part of the right side of the baffle is provided with a first slide way for sliding connection with the first slide rod, the second slide rod is slidably connected with an open slot at the middle part of the side edge of the seat plate and extends into the first slide way and a second slide way between the first slide way and the second slide way, the lower part of the second slide rod is internally provided with an upper horizontal slide way and a lower horizontal slide way which are arranged in a staggered manner, the upper horizontal slide way and the lower horizontal slide way are respectively and slidably connected with an upper locating pin plate and a lower locating pin plate, a gear is meshed and connected between the upper locating pin plate and the lower locating pin plate, and the first slide way and the second slide.

Preferably, a second reinforcing rod is connected between the front frame and the rear frame; the joint of the upper end of the first sliding rod and the lower end of the desktop is provided with a clamping protrusion, and the upper end of the baffle is provided with a clamping groove for clamping the clamping protrusion.

Preferably, the second slide bar and the elevating platform integrated into one piece in the middle of the side of the elevating platform, and the second slide bar and the first slide bar are arranged in parallel, and a reinforcing member is connected between the second slide bar and the first slide bar.

Preferably, the gear is located the lower part inner chamber of second slide bar, and gear accessible hardware rotates, the hardware has the connecting rod to connect in the centre of a circle middle part of gear, the hardware is one of hexagon socket head cap screw, outer hexagon head cap screw, a word bolt, cross bolt or hand wheel.

Preferably, a reinforcing bar is connected between the extension legs of the front frame and the rear frame.

Preferably, the metal connector and the extension leg are integrally formed, and the end face of the extension leg connected with the front frame or the rear frame is an inclined end face of 45 degrees, so that the extension leg can be transversely installed on the front frame and the rear frame and also can be longitudinally installed on the front frame and the rear frame, when the extension leg is transversely installed on the front frame and the rear frame, the swinging amplitude of furniture can be enlarged to prevent the furniture from toppling, when the extension leg is longitudinally installed on the front frame and the rear frame, the furniture can be stably landed through four supporting points, and the overall height of the furniture is increased.

Preferably, the open slot of the seat plate can just completely accommodate the tabletop of the lifting platform, and the upper end surface of the lifting platform when the lifting platform is lowered to the lowest position is flush with the upper end surface of the seat plate.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model can be used in various ways, a person sits on the seat board, the hand leans against the lifting platform, the reading scene is shown, and meanwhile, the U-shaped bracket with radian at the bottom can be used as a pedal;

when the connecting legs are vertically arranged and supported and the lifting platform is not lifted, the product is a common stool; the lifting platform is lifted to form a chair with a small table platform, and then the connecting legs are arranged in the horizontal direction to form a toy similar to a 'wooden horse'.

The height of the lifting platform can be adjusted, after the lifting platform is moved to a proper height, the hand wheel is rotated clockwise, the gear also rotates clockwise, and then the upper positioning pin plate and the lower positioning pin plate slide along the corresponding horizontal sliding grooves until the upper positioning pin plate and the lower positioning pin plate are inserted into the inserting grooves, so that the lifting platform is fixed;

the bottom parts of the left side and the right side of the U-shaped support are internally provided with the countersunk holes for extending in the screws, the bottom parts of the left side and the right side of the U-shaped support are also internally provided with the inserting holes communicated with the countersunk holes, the inserting holes are used for inserting the metal connectors, the metal connectors are arranged at one ends of the connecting legs connected with the U-shaped support, and the metal connectors are internally provided with the internal thread holes for screwing the screws, so that the connecting legs are firmly installed and fixed; although the structure is loosened after long-term use or due to deformation of wood along with changes of moisture content of the atmosphere, the structure can be continuously tensioned by tightening the screw.

Drawings

FIG. 1 is a schematic structural view of the lifting platform of the present invention with the extension legs horizontally disposed after lifting;

FIG. 2 is a schematic view of the connection and disassembly structure of the second slide bar and the second slide rail of the present invention;

FIG. 3 is a schematic view of the sectional structure of the second slide bar connected to the second slide rail;

FIG. 4 is a schematic view of the exploded cross-sectional structure of the connection at A in FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the connection structure of the second slide bar, the lifting platform and the first slide bar of the present invention;

fig. 6 is a schematic view of the three-dimensional structure of the lifting platform of the present invention after it is lowered to the lowest position;

FIG. 7 is a schematic structural view of the lifting platform of the present invention with the extension legs vertically disposed after being lifted;

fig. 8 is another angle structure diagram of the extension leg of the present invention.

In the figure: the device comprises a seat plate 1, a bracket system 2, a fixed part 21, a front frame 211, a rear frame 212, a reinforcing rod 213, a second reinforcing rod 2131, a baffle 214, a clamping groove 215, a sliding part 22, a first slide way 221, a second slide way 222, a first slide way 2221, a second slide way 2222, a plug-in groove 223, a plug-in hole 23, a screw 24, a countersunk hole 25, a 3 lifting platform 31, a desktop 31, a second slide rod 32, a horizontal slide way 321, a positioning pin plate on the 322, a positioning pin plate under the 323, a gear 324, a clamping bulge 33, a first slide rod 34, a reinforcing member 35, a 4-extending leg 41, a reinforcing rod 42 metal connector, a 43 internal thread hole and 5 hardware.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: variable growth child furniture with lifting function, comprising: the lifting platform comprises a seat plate 1, a support system 2 connected with the seat plate 1, and a lifting platform 3, wherein the support system 2 comprises a fixed part 21 and a sliding part 22 connected with the fixed part 21, the fixed part 21 comprises a front frame 211, a rear frame 212 and a reinforcing rod 213 which is symmetrically arranged and connects the front frame 211 and the rear frame 212, the sliding part 22 comprises a first slide way 221 and a second slide way 222, the lifting platform 3 comprises a table top 31, a first slide bar 34 and a second slide bar 32 are connected below the table top 31, the first slide bar 34 is movably connected with the first slide way 221, the second slide bar 32 is movably connected with the second slide way 222, the seat plate 1 is fixedly connected with the fixed part 21 and the second slide way 222, and the lifting platform 3 can move up and down relative to the support system 2 under the limitation of the sliding part 22.

Specifically, the front frame 211 and the rear frame 212, which are symmetrically arranged, are both U-shaped brackets, the bottoms of the brackets are arc-shaped, the second slide way 222 is connected below the seat plate 1, the second slide way 222 includes a first slide way 2221 and a second slide way 2222, which are oppositely arranged, a baffle plate 214 is further arranged on the bracket system 2, the first slide way 221 is arranged in the baffle plate 214, the second slide bar 32 is slidably connected to an open slot of the seat plate 1 and extends into the second slide way 222 between the first slide way 2221 and the second slide way 2222, and the two sides of the bottoms of the front frame 211 and the rear frame 212 are both provided with extension legs 4.

Specifically, the front frame 211 with the back frame 212 bottom is the arc of same radian, the front frame 211 with back frame 212 bottom both sides all are equipped with the counter sink 25 that is used for stretching into screw 24, the front frame 211 with back frame 212 bottom both sides all are equipped with the spliced eye 23 with counter sink 25 intercommunication, spliced eye 23 is used for grafting metallic interconnect head 42, metallic interconnect head 42 set up in extension leg 4 with the one end that fixed part 21 is connected, be equipped with the internal thread hole 43 that is used for spiro union screw 24 in the metallic interconnect head 42.

Specifically, a first sliding rod 34 is connected to the middle of the lower end of the lifting table 3, a second sliding rod 32 is connected to the middle of the side edge of the lifting table 3, a first slide way 221 for slidably connecting the first sliding rod 34 is arranged in the middle of the right side of the baffle plate 214, the second sliding rod 32 is slidably connected to an open slot in the middle of the side edge of the seat plate 1 and extends into the second slide way 222 between the first sliding slot 2221 and the second sliding slot 2222, two sets of upper and lower horizontal sliding slots 321 are arranged in the lower portion of the second sliding rod 32 in a staggered manner, an upper positioning pin plate 322 and a lower positioning pin plate 323 are respectively slidably connected in the upper and lower horizontal sliding slots 321, a gear 324 is engaged and connected between the upper positioning pin plate 322 and the lower positioning pin plate 323, and a plurality of sets of inserting grooves 223 for respectively inserting the upper positioning pin plate 322 and the lower positioning pin plate 323 are arranged in the first sliding slot 2221 and the second.

Specifically, a second reinforcing rod 2131 is connected between the front frame 211 and the rear frame 212; the joint of the upper end of the first sliding rod 34 and the lower end of the table top 31 is provided with a clamping protrusion 33, and the upper end of the baffle 214 is provided with a clamping groove 215 for clamping the clamping protrusion 33.

Specifically, the second slide bar 32 in the middle of the side edge of the lifting platform 3 and the lifting platform 3 are integrally formed, the second slide bar 32 and the first slide bar 34 are arranged in parallel, and a reinforcing member 35 is connected between the second slide bar 32 and the first slide bar 34.

Specifically, gear 324 is located the lower part inner chamber of second slide bar 32, and gear 324 accessible hardware 5 rotates, hardware 5 has the connecting rod to connect in the centre of a circle middle part of gear 324, hardware 5 is one of hexagon socket head cap screw, outer hexagon head cap screw, a word bolt, cross bolt or hand wheel.

Specifically, a reinforcing bar 41 is connected between the extension legs 4 of the front frame 211 and the rear frame 212.

Specifically, the metal connector 42 and the extension leg 4 are integrally formed, and an end surface of the extension leg 4 connected to the front frame 211 or the rear frame 212 is an inclined end surface of 45 degrees, so that the extension leg 4 can be transversely installed on the front frame 211 and the rear frame 212, and can also be longitudinally installed on the front frame 211 and the rear frame 212, when the extension leg 4 is transversely installed on the front frame 211 and the rear frame 212, the swing range of the furniture can be enlarged to prevent the furniture from falling down, and when the extension leg 4 is longitudinally installed on the front frame 211 and the rear frame 212, the furniture can be landed through four fulcrums to be stable, and the overall height of the furniture can be increased.

Specifically, the open slot of the seat plate 1 can just completely accommodate the tabletop 31 of the lifting platform 3, and the upper end surface of the lifting platform 3 when the lifting platform is lowered to the lowest position is flush with the upper end surface of the seat plate 1.

To better illustrate the technical solution of the present invention, the following further describes the embodiments of the present invention with reference to the accompanying drawings 1-8.

Example 1: the fixing part 21 is symmetrically provided with two groups of U-shaped supports in front and back, the bottoms of the two groups of U-shaped supports are arranged in an arc shape, the right sides of the upper ends of the two groups of U-shaped supports are connected with a seat plate 1, the lower end of the left side of the seat plate 1 is connected with a first sliding groove 2221 and a second sliding groove 2222, the front and back sliding grooves are connected with the lower ends of the two groups of sliding grooves, the reinforcing rod 213 is connected between the left sides of the bottoms of the front frame 211 and the rear frame 212 of the U-shaped supports, and a baffle 5; a first slide bar 34 positioned on the left side is connected with the middle part of the lower end of the lifting platform 3, a second slide bar 32 positioned on the right side is connected with the middle part of the right end of the lifting platform 3, the middle part of the right side of the baffle plate 215 is provided with a first slide way 221 for slidably connecting the first slide bar 34, the second slide bar 32 on the right side is slidably connected with an open slot at the middle part of the left end of the seat plate 1 and extends into a second slide way 222 slidably connected between the front and back two sets of the first slide way 2221 and the second slide way 2222, an upper group of horizontal sliding chutes 321 and a lower group of horizontal sliding chutes 321 which are arranged in a staggered manner are arranged in the lower part of the second sliding rod 32 on the right side, an upper positioning pin plate 322 and a lower positioning pin plate 323 are respectively connected in the upper horizontal sliding chute 321 and the lower horizontal sliding chute 321 in a sliding manner, a gear 324 is engaged and connected between the upper positioning pin plate 322 and the lower positioning pin plate 323, and a plurality of groups of insertion grooves 223 for respectively inserting the upper positioning pin plate 322 and the lower positioning pin plate 323 are arranged in the second slide ways 222 of the first slide groove 2221 and the second slide groove 2222; and four groups of extension legs 4 respectively mounted at the bottoms of the left and right sides of the U-shaped front frame 211 and the rear frame 212.

Example 2: u type be equipped with in the front bezel 211 with the back frame 212 left and right sides bottom and be used for stretching into the counter sink 25 of screw 24, still be equipped with in the front bezel 211 of U type and the back frame 212 left and right sides bottom with the spliced eye 23 of counter sink 25 intercommunication, spliced eye 23 is used for grafting metal connector 42, metal connector 42 sets up in the one end that extension leg 4 and U type front bezel 211 or back frame 212 are connected, be equipped with the internal thread hole 43 that is used for spiro union screw 24 in the metal connector 42.

Example 3: u type the front bezel 211 with still be connected with second stiffener 2131 between the rear frame 212, through the setting of second stiffener 2131, improved the fastness between two sets of U type supports, reinforcing structural strength.

Example 4: left the upper end of first slide bar 34 is equipped with joint arch 33 with the lower extreme junction of elevating platform 3, the upper end of baffle 214 is equipped with the joint groove 215 that is used for blocking joint arch 33, through the setting of joint arch 33 and joint groove 215, when elevating platform 3 descends to the lowest, joint groove 215 is used for blocking joint arch 33, is favorable to making elevating platform 3 be in stable state like this.

Example 5: second slide bar 32 and elevating platform 3 integrated into one piece, and the second slide bar 32 and the first slide bar 34 that are located the right side are parallel arrangement, the bottom between second slide bar 32 and the first slide bar 34 on right side is connected with reinforcement 35, and through the setting of reinforcement 35, it has improved the stability that second slide bar 32 and first slide bar 34 are connected, reinforcing structural strength.

Example 6: the gear 324 is located in the lower inner cavity of the second sliding rod 32, the gear 324 rotates through a hand wheel, the hand wheel is connected to the middle of the circle center of the gear 324 through a connecting rod at the left end of the hand wheel, and the hand wheel is arranged, so that the gear 324 can conveniently rotate anticlockwise or clockwise when the hand wheel is rotated.

Example 7: the left side is two sets of be connected with stiffener 41 between the extension leg 4, the right side is two sets of also be connected with stiffener 41 between the extension leg 4, through the setting of stiffener 41, it has improved the left side two sets of connection stability between the extension leg 4 and the right side two sets of connection stability between the extension leg 4.

Example 8: metal joint 42 and extension leg 4 integrated into one piece, and extension leg 4 and U type the front bezel 211 or the terminal surface that the after-poppet 212 is connected each other is the slope terminal surface of 45 degrees, through extension leg 4 and U type the front bezel 211 or the after-poppet 212 terminal surface that connects each other is the setting of the slope terminal surface of 45 degrees, can satisfy the installation of the level of extension leg 4 or vertical direction like this.

Example 9: when in use, the middle part of the right side of the baffle plate 214 is provided with a first slide way 221 for sliding connection with the first slide bar 34, and the second slide bar 34 is slidably connected with an open slot at the middle part of the left end of the seat plate 1 and then extends into a second slide way 222 slidably connected between the front and rear groups of slide ways, so that the lifting platform 3 can be lifted up and down to adjust the height; the upper end surface of the lifting platform 3 when the lifting platform is lowered to the lowest position is flush with the upper end surface of the seat plate 1.

Because the gear 321 is engaged and connected between the upper positioning pin plate 322 and the lower positioning pin plate 323, and the hand wheel is connected to the middle part of the circle center of the gear 324 through the connecting rod at the left end of the hand wheel, when the hand wheel rotates counterclockwise, the gear 324 also rotates counterclockwise, so that the upper positioning pin plate 322 and the lower positioning pin plate 323 slide along the corresponding horizontal sliding groove 223 until the upper positioning pin plate 322 and the lower positioning pin plate 323 completely separate from the corresponding inserting groove 223 and contract into the lower part of the second sliding rod 32, at this time, after the lifting platform 3 is lifted up to a proper height, the hand wheel is rotated clockwise, the gear 324 also rotates clockwise, so that the upper positioning pin plate 322 and the lower positioning pin plate 323 slide along the corresponding horizontal sliding groove 223 until the upper positioning pin plate 322 and the lower positioning pin plate 323 are inserted into the inserting groove 223, thus completing the lifting and fixing of the lifting platform 3;

when the height of the lifting platform 3 needs to be lowered, the upper positioning pin plate 322 and the lower positioning pin plate 323 are completely separated from the corresponding insertion groove 223 and are contracted into the lower part of the second sliding rod 32, the lifting platform 3 is pressed downwards to a proper height, the hand wheel is rotated clockwise, the gear 324 is also rotated clockwise, and then the upper positioning pin plate 322 and the lower positioning pin plate 323 slide along the corresponding horizontal sliding groove 223 until the upper positioning pin plate 322 and the lower positioning pin plate 323 are inserted into the insertion groove 223, so that the lifting platform 3 is lowered and fixed;

the bottom parts of the left side and the right side of the U-shaped support are internally provided with the countersunk holes 25 for extending the screws 24, the bottom parts of the left side and the right side of the U-shaped support are also internally provided with the inserting holes 23 communicated with the countersunk holes 25, the inserting holes 23 are used for inserting the metal connectors 42, the metal connectors 42 are arranged at one ends of the extension legs 4 connected with the U-shaped support, and the metal connectors 42 are internally provided with the internal thread holes 43 for screwing the screws 24, so that the extension legs 4 are firmly installed and fixed; although the structure is loosened after long-time use or due to deformation of wood along with change of moisture content of the atmosphere, the structure can be continuously tensioned by tightening the screw 24;

a person sits on the seat board 1, the hand of the person leans against the lifting platform 3, the scene of reading is shown, and meanwhile, the U-shaped bracket with the radian at the bottom can be used as a pedal;

when the extension legs 4 are vertically arranged and supported and the lifting platform 3 is not lifted, the product is a common stool; the lifting platform 3 is lifted to form a chair with a small table, and the extension legs 4 are arranged in the horizontal direction to immediately form a toy similar to a 'hobbyhorse', and at the moment, the lifting platform 3 can be used as a handle.

Thus, although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A variable growth type children furniture with lifting function, which comprises a seat board (1) and a bracket system (2) connected with the seat board, and is characterized by further comprising a lifting platform (3), wherein the bracket system (2) comprises a fixed part (21) and a sliding part (22) connected with the fixed part, the fixed part (21) comprises a front frame (211), a rear frame (212) and a reinforcing rod (213) connecting the front frame (211) and the rear frame (212), the sliding part (22) comprises a first slideway (221) and a second slideway (222), the lifting platform (3) comprises a table top (31), a first sliding rod (34) and a second sliding rod (32) are connected under the table top (31), the first sliding rod (34) is movably connected with the first slideway (221), and the second sliding rod (32) is movably connected with the second slideway (222), the seat plate (1) is fixedly connected with a fixed part (21) and the second slideway (222), and the lifting platform (3) can move up and down relative to the bracket system (2) under the limitation of the sliding part (22).

2. A convertible growth child furniture with lifting function according to claim 1, characterized in that: the symmetrically arranged front frame (211) and the rear frame (212) are U-shaped supports, the bottoms of the U-shaped supports are arc-shaped, the seat plate (1) is connected with the second slide way (222) downwards, the second slide way (222) comprises a first slide groove (2221) and a second slide groove (2222) which are oppositely arranged, a baffle (214) is further arranged on the support system (2), the first slide way (221) is arranged in the baffle (214), the second slide rod (32) is connected to an open groove of the seat plate (1) in a sliding mode and extends into the second slide way (222) between the first slide groove (2221) and the second slide groove (2222), and extension legs (4) are arranged on two sides of the bottoms of the front frame (211) and the rear frame (212).

3. A convertible growth-type children's furniture with lifting function according to claim 1 or 2, characterized in that: the utility model discloses a bolt, including fore-stock (211), after-frame (212), fore-stock (211) with after-frame (212) bottom both sides all are equipped with counter sink (25) that are used for stretching into screw (24), fore-stock (211) with after-frame (212) bottom both sides all are equipped with spliced eye (23) with counter sink (25) intercommunication, spliced eye (23) are used for grafting metallic interconnect head (42), metallic interconnect head (42) set up in extension leg (4) with the one end that fixed part (21) are connected, be equipped with internal thread hole (43) that are used for spiro union screw (24) in metallic interconnect head (42).

4. A convertible growth child furniture with lifting function according to claim 2, characterized in that: the middle part of the lower end of the lifting platform (3) is connected with a first sliding rod (34), the middle part of the side edge of the lifting platform (3) is connected with a second sliding rod (32), the middle part of the right side of the baffle plate (214) is provided with a first slide way (221) used for sliding connection with the first sliding rod (34), the second sliding rod (32) is slidably connected with an open slot in the middle part of the side edge of the seat plate (1) and extends into a second slide way (222) between the first sliding slot (2221) and the second sliding slot (2222), the lower part of the second sliding rod (32) is internally provided with an upper horizontal sliding slot (321) and a lower horizontal sliding slot (321) which are staggered, the upper horizontal sliding slot (321) is respectively slidably connected with an upper positioning pin plate (322) and a lower positioning pin plate (323), a gear (324) is engaged and connected between the upper positioning pin plate (322) and the lower positioning pin plate (323), the first sliding slot (2221) and the second sliding slot (2222) are internally provided with a plurality of components respectively used for inserting connection with the A receiving groove (223).

5. A convertible growth child furniture with lifting function according to claim 2, characterized in that: a second reinforcing rod (2131) is connected between the front frame (211) and the rear frame (212); the joint of the upper end of the first sliding rod (34) and the lower end of the desktop (31) is provided with a clamping protrusion (33), and the upper end of the baffle (214) is provided with a clamping groove (215) used for clamping the clamping protrusion (33).

6. A convertible growth child furniture with lifting function according to claim 1, characterized in that: the second sliding rod (32) in the middle of the side edge of the lifting platform (3) and the lifting platform (3) are integrally formed, the second sliding rod (32) and the first sliding rod (34) are arranged in parallel, and a reinforcing piece (35) is connected between the second sliding rod (32) and the first sliding rod (34).

7. A convertible growth child furniture with lifting function according to claim 4, characterized in that: gear (324) are located the lower part inner chamber of second slide bar (32), and gear (324) accessible hardware (5) rotate, hardware (5) have the connecting rod to connect in the centre of a circle middle part of gear (324), hardware (5) are in one of hexagon socket head cap screw, outer hexagon socket head cap screw, a word bolt, cross bolt or hand wheel.

8. A convertible growth child furniture with lifting function according to claim 1, characterized in that: a reinforcing rod (41) is connected between the extension legs (4) of the front frame (211) and the rear frame (212).

9. A convertible growth child furniture with lifting function according to claim 3, characterized in that: the metal connector (42) and the extension leg (4) are integrally formed, and the end face of the extension leg (4) connected with the front frame (211) or the rear frame (212) is an inclined end face of 45 degrees, so that the extension leg (4) can be transversely installed on the front frame (211) and the rear frame (212) and also can be longitudinally installed on the front frame (211) and the rear frame (212), when the extension leg (4) is transversely installed on the front frame (211) and the rear frame (212), the swinging amplitude of furniture can be enlarged to prevent the furniture from toppling, when the extension leg (4) is longitudinally installed on the front frame (211) and the rear frame (212), the furniture can be stably landed through four pivot points, and the overall height of the furniture is increased.

10. A convertible growth child furniture with lifting function according to claim 1, characterized in that: the open slot of the seat plate (1) can just completely accommodate the tabletop (31) of the lifting platform (3), and the upper end surface of the lifting platform (3) when the lifting platform is lowered to the lowest position is flush with the upper end surface of the seat plate (1).

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