Multifunctional walker

Abstract

The multifunctional baby walker comprises an upper disc, a lower disc, a front supporting arm and a rear supporting arm, the upper disc is provided with a seat basket installation opening used for installing a seat basket, first tires are arranged at the bottom of the upper disc, and a toy car is formed; the lower portion of the front supporting arm and the lower portion of the rear supporting arm are connected with the lower disc, and a second tire is arranged at the bottom of the lower disc. The upper portion of the front supporting arm and the upper portion of the rear supporting arm are detachably connected with the upper plate of the toy car, so that the toy car and the lower plate are connected to form the baby walker. The first tire is arranged at the bottom of the upper plate, so that the baby walker can be directly converted into a toy car for use after being separated from the lower plate, and the functionality of the baby walker is increased. Children not only can learn to walk by using the toy car, but also can push the toy car to play, so that the entertainment and the practicability of the product are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a multifunctional walking learner. BACKGROUND

[0002] The walking learner is an important auxiliary tool for children to learn to walk and has been widely used in the market. The traditional walking learner is mainly composed of an upper disc, a seat basket, a supporting arm and a lower disc. Children can learn to walk under the supervision of parents by holding the upper disc and relying on the support of the seat basket. This design meets the needs of children to learn to walk to a certain extent, but its function is relatively single and cannot meet the diversified entertainment needs of children.

[0003] In the existing design of the walking learner, the upper disc is usually only used for the function of learning to walk and cannot be used alone, which limits its application scenarios. Once the upper disc and the lower disc are separated, the upper disc cannot be converted for other purposes, resulting in insufficient function expansion. In addition, the supporting arm design of the existing walking learner is usually fixed and occupies a large space after disassembly, which brings inconvenience to the user's storage and carrying. SUMMARY

[0004] The utility model aims at providing a multifunctional walking learner which not only meets the needs of children in learning to walk, but also forms a toy car after disassembly, thereby improving the practicality and interest of the product.

[0005] The utility model is achieved as follows:

[0006] A multifunctional walking learner comprises an upper disc, a lower disc, a front supporting arm and a rear supporting arm. The upper disc is provided with a seat basket mounting port for mounting a seat basket. The bottom of the upper disc is provided with a first tire to form a toy car.

[0007] The lower part of the front supporting arm and the lower part of the rear supporting arm are connected with the lower disc, respectively. The bottom of the lower disc is provided with a second tire.

[0008] The upper part of the front supporting arm and the upper part of the rear supporting arm are connected with the upper disc of the toy car in a detachable manner, so that the toy car and the lower disc are connected to form a walking learner.

[0009] By arranging the first tire at the bottom of the upper disc, the upper disc can be directly converted into a toy car for use after being separated from the lower disc, thereby increasing the functionality of the walking learner. Children can not only use the walking learner to learn to walk, but also push the toy car to play, thereby enhancing the entertainment and practicality of the product.

[0010] The upper parts of the front supporting arm and the rear supporting arm are connected with the upper disc in a detachable manner. When the walking learner needs to be stored, the user can easily separate the upper disc from the lower disc. At the same time, the front supporting arm and the rear supporting arm are designed to be rotatable, which facilitates folding and greatly reduces the storage space occupation, thereby improving the convenience of storage and carrying.

[0011] The design ensures that the walker has good structural strength and stability in the walking mode through the stable connection of the front support arm and the rear support arm with the lower disc, and provides safe and reliable support for children learning to walk.

[0012] Through the optimized structure design, the connection of the support arm with the upper disc and the lower disc adopts a detachable mode, so that the user can conveniently and quickly complete the switching between the walker mode and the toy car mode, the operation is simple, no additional tools are needed, and the user's multi-scene use demand is met.

[0013] The traditional walker has a single function, and the design innovatively changes the upper disc into a toy car with a first tire, so that the product has the walking function and the entertainment function, more use scenes are provided for children, and the interest of children in the product is improved.

[0014] The multifunctional walker integrates the walker and the toy car, one object has multiple uses, the additional purchase of the toy car by parents is reduced, the multifunctional walker has high economic efficiency and practical value, and meets the market demand for multifunctional children's products.

[0015] The purpose of the utility model can also be solved by the following technical measures:

[0016] Further, the front support arm and the lower disc are rotationally connected, and the front support arm rotates around the connection position of the lower part of the front support arm and the lower disc as the rotation center.

[0017] The front support arm can rotate around the connection position with the lower disc, and when the walker is disassembled, the front support arm can be rotated and folded into the lower disc, so that the overall occupied space is greatly reduced, and storage is more convenient.

[0018] Through the rotation structure design, the disassembly and folding of the walker can be realized without additional tools, the operation is simple, and the user experience is improved.

[0019] The rotation connection design effectively avoids wear caused by repeated disassembly and assembly, and prolongs the service life of the product.

[0020] Further, the rear support arm and the lower disc are rotationally connected, and the rear support arm rotates around the connection position of the lower part of the rear support arm and the lower disc as the rotation center.

[0021] The rotation design of the rear support arm enables the rear support arm to be folded and closed to the lower disc along the connection position, the overall structure of the disassembled walker is further optimized, the storage space is saved, and the walker is convenient for carrying at home or outside.

[0022] Further, the utility model also comprises a push rod, a connecting cavity is arranged at the bottom of the upper disc, a clamping groove and a clamping cavity are formed at the position corresponding to the connecting cavity of the upper disc, the push rod is movably arranged in the clamping cavity, one end of the push rod extends out of the clamping cavity to form a button, and the button drives the push rod to slide along the clamping cavity.

[0023] The upper part of the front support arm is provided with an elastic clamping column and a fixed clamping column, the upper part of the front support arm is inserted into the connecting cavity, the fixed clamping column is inserted into the clamping groove, and the elastic clamping column is inserted into the clamping cavity and abuts against the push rod, so that the front support arm and the upper disc are connected.

[0024] When the button is pressed, the push rod slides and pushes the elastic clamping column out of the clamping cavity.

[0025] By arranging the linkage structure of the push rod, the button, the elastic clamping column and the fixed clamping column, the user only needs to press the button to unlock the connection between the front support arm and the upper disc, without the need for additional tools or complex operations, thereby greatly improving the disassembly efficiency and convenience.

[0026] The front support arm is double-locked by the fixed clamping column and the elastic clamping column, which effectively prevents the support arm from loosening due to vibration or external force during use of the walker, thereby ensuring the structural stability and use safety of the product.

[0027] The sliding linkage design of the button and the push rod enables the user to easily press the elastic clamping column, and the operation feels smooth and effortless, so even users with less strength can easily complete the disassembly and assembly.

[0028] After unlocking, the user can quickly separate the upper disc from the front support arm, switch the walker mode to the toy car mode, or conveniently store the product, thereby improving the multifunctionality and applicability of the product.

[0029] Further, the left and right sides of the front support arm are provided with the fixed clamping columns, the distance between the front ends of the fixed clamping columns is greater than the width of the connecting cavity, and the length of the clamping groove is greater than the diameter of the fixed clamping column.

[0030] Since the distance between the front ends of the fixed clamping columns is greater than the width of the connecting cavity, even if the elastic clamping column is separated from the clamping cavity, the front support arm and the upper disc will not be immediately separated. This design effectively prevents the risk of sudden loosening of the walker structure due to misoperation (such as pressing the button by mistake), thereby significantly improving the use safety of the product.

[0031] The length of the clamping groove is greater than the diameter of the fixed clamping column, and the user needs to rotate and adjust the angle of the upper disc so that the fixed clamping column enters a specific position before being further pulled down and separated. This multi-step unlocking design avoids accidental loosening of the walker during use due to a single operation, and provides more reliable connection stability.

[0032] Further, the bottom of the upper disc is provided with a latch locking seat, the surface of the latch locking seat is provided with an opening through which a pressing block passes, and the side wall of the latch locking seat is provided with a socket through which a latch enters.

[0033] The latch locking seat provides a dedicated installation position for the latch locking structure, ensuring the overall stability of the locking mechanism.

[0034] The opening on the surface of the latch locking seat facilitates the extension of the pressing block and can intuitively feedback the locking state.

[0035] The design of the socket on the side wall of the latch locking seat provides a clear guiding effect during the insertion of the latch, ensuring smooth entry of the latch into the locking seat and improving the convenience of operation and the reliability of connection.

[0036] Further, the latch is provided with a locking device, which includes a pressing block.

[0037] The upper part of the rear support arm is provided with a latch insertion interface, which is aligned with the socket. The latch sequentially passes through the latch insertion interface and the socket and enters the latch locking seat. When the latch is completely inserted into the latch locking seat, the pressing block extends out of the opening, achieving the locking of the latch and the latch locking seat.

[0038] The integration of the locking device on the latch makes the connection more secure in structure and prevents accidental loosening.

[0039] The pressing block, as a locking element, can automatically lock after the latch is completely inserted, providing reliable mechanical locking function and improving the overall safety.

[0040] When the latch is completely inserted, the pressing block automatically passes out of the opening, providing an intuitive indication of the locking state and ensuring the secure and reliable connection between the rear support arm and the upper disc, thereby effectively preventing the disc from falling off.

[0041] Further, the locking device further includes a spring and a screw. The latch is provided with a notch, the screw is movably arranged at the notch, and the pressing block is arranged in the notch. The lower end of the pressing block is connected to the screw, and the screw limits the stroke of the pressing block.

[0042] The spring is sleeved on the lower end of the pressing block. One end of the spring abuts against the bottom of the notch, and the other end of the spring abuts against the pressing block. The spring constitutes a reset structure of the pressing block.

[0043] By arranging the movable screw at the notch of the latch and connecting it with the pressing block, the movement range of the pressing block can be accurately limited, avoiding the influence of overstroke movement on the locking effect.

[0044] This structure ensures that the pressing block is always in a reasonable position during work, thereby ensuring the stability and durability of the locking device and preventing mechanical fatigue or locking failure caused by excessive movement amplitude.

[0045] The spring serves as a reset function, ensuring that the pressing block can automatically reset and stably pass out of the opening after the latch is completely inserted, providing continuous locking force.

[0046] The automatic reset function not only simplifies user operation, but also effectively prevents accidental retraction of the pressing block due to vibration or external force, thereby improving the safety and reliability of the overall locking system.

[0047] The pressing block is designed with a spring reset structure, so that the user only needs to press the pressing block slightly to unlock the latch, which is simple, convenient and fast, and does not require the use of additional tools, thereby optimizing the user experience.

[0048] Further, the latch insertion interface of the rear support arm is aligned with the insertion port, and the latch sequentially passes through the latch insertion interface and the insertion port into the latch locking seat, and when the latch enters the latch locking seat, it pushes the pressing block to compress the spring, and when the latch is fully inserted into the latch locking seat, the spring resets to push the pressing block out of the extension opening, thereby achieving locking of the latch and the latch locking seat.

[0049] The design of this process ensures that the latch must overcome the resistance of the spring during insertion, and only when the latch is fully in place will the spring reset to push the pressing block, thereby achieving true locking and effectively preventing partial insertion or misinsertion, thereby enhancing the safety of the connection structure and ensuring that the connection between the rear support arm and the upper disc is always stable and reliable.

[0050] Further, the pressing portion is provided with a guide slope facing the insertion port direction.

[0051] The pressing portion is provided with a guide slope facing the insertion port direction, which can effectively guide the latch into the latch locking seat during insertion, and even if the user's angle is slightly off, the guide slope can correct the direction of the latch, allowing it to be inserted smoothly, thereby improving the convenience and accuracy of operation.

[0052] With the help of the guide slope design, the action of inserting the latch can be completed more quickly, and the user does not need to adjust the position of the latch multiple times to complete the locking operation, thereby greatly improving the locking efficiency.

[0053] The beneficial effects of the present utility model are as follows:

[0054] The present utility model, through the ingenious design of the front support arm and the rear support arm, as well as the detachable connection with the upper disc and the lower disc, the rapid switching between the walker and the toy car becomes possible, meeting the use needs of children at different growth stages and improving the adaptability and practicality of the product.

[0055] The present utility model, the double locking structure (fixed clamping column + elastic clamping column) of the front support arm ensures that only the elastic clamping column is unlocked after pressing the key, while the fixed clamping column remains firmly locked, thereby avoiding accidental operation that causes the front support arm to suddenly loosen and ensuring the safety of children during use.

[0056] The utility model discloses, through the spring reset's pressing block realizes the stable locking of bolt, prevents the walker in the driving process because of external force or misoperation and leads to the support arm to loosen.

[0057] The utility model discloses, the dismounting design of front support arm needs to press the button, rotates the upper disc and adjusts the angle, and the multiple steps of pulling down the support arm are completed together, and the dismounting of rear support arm also needs to press the pressing block of bolt locking seat, can only pull out the bolt, and the connection is unlocked, the controllability of dismounting is improved significantly, avoids single action trigger connection and cancels, and the risk of misdisassembly is reduced greatly.

[0058] The utility model discloses, when walker is dismounted as toy car, front support arm and rear support arm can be folded and stored along the rotation center, the overall volume is reduced significantly, and user storage and carrying are convenient, especially suitable for family environment or going out uses.

[0059] The utility model discloses, product can satisfy walker, playing two scene needs simultaneously, not only provides walker function, but also can be used as independent toy car, prolongs product life cycle, and the purchase value of parent is improved.

[0060] Misoperation protection and children safety improvement

[0061] The utility model discloses, the multifunctional unlocking design of button and the anti-loosening design of locking device, ensure that even if the child in the use process mispresses the button or exerts external force, also can not lead to the support arm suddenly separates or the whole structure slack, maximum limit has improved the safety performance of product. DRAWINGS

[0062] Figure 1 It is the schematic diagram of toy car.

[0063] Figure 2 It is another angle schematic diagram of toy car.

[0064] Figure 3 It is the local partial solution schematic diagram of toy car.

[0065] Figure 4 It is the connection schematic diagram of front support arm, rear support arm and lower disc.

[0066] Figure 5 It is the schematic diagram of walker.

[0067] Figure 6 It is another angle schematic diagram of walker.

[0068] Figure 7 It is the sectional view of walker (elasticity card column and card cavity connection).

[0069] Figure 8 It is the sectional view of walker (elasticity card column and card cavity connection).

[0070] Figure 9 isometric view of the walker in a partially exploded view.

[0071] Figure 10 isometric view of the walker in a cross-sectional view (pin inserted into pin lock seat).

[0072] Figure 11 isometric view of the walker in an assembled view (toy car and lower tray separated, pin removed).

[0073] Figure 12 isometric view of the pin.

[0074] Figure 13 cross-sectional view of the pin.

[0075] Figure 14 exploded view of the pin. DETAILED DESCRIPTION

[0076] The utility model will be further described in connection with the drawings and embodiments:

[0077] Embodiment, in connection with Figures 1 to 14 shown, a multifunctional walker, including upper tray 1, lower tray 3, front support arm 4 and rear support arm 5, the upper tray 1 is provided with seat basket mounting port 2 for installing seat basket, the bottom of the upper tray 1 is provided with first tire 6, forming toy car 7;

[0078] The lower part of the front support arm 4 and the lower part of the rear support arm 5 are connected with the lower tray 3 respectively, and the bottom of the lower tray 3 is provided with second tire 61;

[0079] The upper part of the front support arm 4 and the upper part of the rear support arm 5 are connected with the upper tray 1 of the toy car 7 in a detachable manner to connect the toy car and the lower tray 3 to form the walker 8.

[0080] Further, the front support arm 4 and the lower tray 3 are rotationally connected, and the front support arm 4 rotates with the connecting position of the lower part of the front support arm 4 and the lower tray 3 as the rotation center.

[0081] Further, the rear support arm 5 and the lower tray 3 are rotationally connected, and the rear support arm 5 rotates with the connecting position of the lower part of the rear support arm 5 and the lower tray 3 as the rotation center.

[0082] Further, it further includes push rod 9, the bottom of the upper tray 1 is provided with connecting cavity 11, the upper tray 1 is opened with clamping groove 111 and clamping cavity 112 at the position corresponding to connecting cavity 11, the push rod 9 is movably arranged in the clamping cavity 112, and one end of the push rod 9 extends out of the clamping cavity 112 to form button 91, and the button 91 drives the push rod 9 to slide along the clamping cavity 112;

[0083] The upper part of the front support arm 4 is provided with an elastic clamping column 41 and a fixed clamping column 42, the upper part of the front support arm 4 is inserted into the connecting cavity 11, the fixed clamping column 42 is inserted into the clamping groove 111, and the elastic clamping column 41 is inserted into the clamping cavity 112 and abuts against the push rod 9, so that the front support arm 4 and the upper disc 1 are connected.

[0084] When the button 91 is pressed, the push rod 9 slides and pushes the elastic clamping column 41 away from the clamping cavity 112.

[0085] The upper part of the front support arm 4 is provided with an elastic clamping column 41 and a fixed clamping column 42, the upper part of the front support arm 4 is inserted into the connecting cavity 11, the fixed clamping column 42 is inserted into the clamping groove 111, and the elastic clamping column 41 is inserted into the clamping cavity 112 and abuts against the push rod 9, so that the front support arm 4 and the upper disc 1 are connected.

[0086] Further, the left and right sides of the front support arm 4 are provided with the fixed clamping columns 42, the distance between the front ends of the fixed clamping columns 42 is greater than the width of the connecting cavity 11, and the length of the clamping groove 111 is greater than the diameter of the fixed clamping column 42.

[0087] Further, the bottom of the upper disc 1 is provided with a latch locking seat 10, the surface of the latch locking seat 10 is provided with an opening 102 through which the pressing block 20 passes, and the side wall of the latch locking seat 10 is provided with a socket 101 through which the latch 50 enters.

[0088] Further, the latch 50 is also included, the latch 50 is provided with a locking device, and the locking device includes the pressing block 20.

[0089] The upper part of the rear support arm 5 is provided with a latch insertion interface 51, the latch insertion interface 51 of the rear support arm 5 is aligned with the socket 101, the latch 50 sequentially passes through the latch insertion interface 51 and the socket 101 and enters the latch locking seat 10, when the latch 50 is completely inserted into the latch locking seat 10, the pressing block 20 extends out of the opening 102, and the latch 50 and the latch locking seat 10 are locked.

[0090] Further, the locking device further includes a spring 30 and a screw 40, the latch 50 is provided with a notch 501, the screw 40 is movably arranged at the notch 501, the pressing block 20 is arranged in the notch 501, the lower end of the pressing block 20 is connected with the screw 40, and the screw 40 limits the stroke of the pressing block 20.

[0091] The spring 30 is sleeved on the lower end of the pressing block 20, one end of the spring 30 abuts against the bottom of the notch 501, the other end of the spring 30 abuts against the pressing block 20, and the spring 30 constitutes a reset structure of the pressing block 20.

[0092] Further, the pin insertion interface 51 of the rear support arm 5 is aligned with the insertion port 101, the pin 50 is inserted into the pin locking seat 10 through the pin insertion interface 51 and the insertion port 101 in sequence, and the pin 50 pushes the pressing block 20 to extrude the spring 30 when entering the pin locking seat 10. When the pin 50 is completely inserted into the pin locking seat 10, the spring 30 is reset to push the pressing block 20 out of the extension opening 102, so as to realize the locking of the pin 50 and the pin locking seat 10.

[0093] Further, the pressing block 20 is provided with a guide inclined surface 201 facing the insertion port 101.

[0094] First, the upper part of the front support arm 4 is inserted into the connecting cavity 11 at the bottom of the upper disc 1 to complete the connection of the front support arm 4 and the upper disc 1.

[0095] Then, the upper part of the rear support arm 5 is aligned with the insertion port 101 of the pin locking seat 10, the angle of the rear support arm 5 is adjusted, the pin insertion interface 51 is aligned with the insertion port 101, the pin 50 is inserted into the pin locking seat 10 through the pin insertion interface 51 and the insertion port 101 of the rear support arm 5 in sequence, and the pin 50 pushes the pressing block 20 when entering the pin locking seat 10. Until the pin 50 is completely inserted and locked, it is confirmed that the pressing block 20 extends out of the extension opening 102, and the connection of the rear support arm 5 and the upper disc 1 is completed.

[0096] Finally, the user lifts the upper disc 1, the front support arm 4 and the rear support arm 5 follow the action of the upper disc 1, and the front support arm 4 and the rear support arm 5 lift the upper disc 1 upwards. When the upper disc 1 is completely lifted, the user presses the upper disc 1, forcing the elastic clamping column 41 of the front support arm 4 to slide and align with and be inserted into the clamping cavity 112, realizing locking, so as to be converted into a walker 8.

[0097] First, press the button 91 at the connecting cavity 11 at the bottom of the upper disc 1 to push the push rod 9 to slide and ensure that the push rod 9 pushes the elastic clamping column 41 away from the clamping cavity 112, so that the front support arm 4 will not immediately separate from the upper disc 1.

[0098] Next, first, press the pressing block 20 on the pin locking seat 10 to push the pressing block 20 to retract to release the locking of the pin 50, second, pull out the pin 50 to make the pin insertion interface 51 of the rear support arm 5 separate from the insertion port 101, third, pull down the rear support arm 5 to make the upper part thereof completely separate from the pin locking seat 10, and the separation of the rear support arm 5 and the upper disc 1 is completed.

[0099] Finally, rotate the upper disc 1 to adjust the position of the fixed clamping column 42 to ensure that the fixed clamping column 42 separates from the clamping groove 111, pull the front support arm 4 to make the upper part thereof completely separate from the connecting cavity 11, complete the separation of the front support arm 4 and the upper disc 1, fold the front support arm 4 and the rear support arm 5 along the rotation center thereof to reduce the volume and facilitate storage, and at this time the upper disc 1 is converted into a toy car 7.

[0100] Through the above assembly and disassembly steps, the user can easily realize the quick switching between the walker 8 and the toy car 7, meet the use requirements in different scenes, and improve the multifunctionality and practicality of the product.

[0101] Step one: press the button 91 with your hand, the button 91 action drives the push rod 9 to slide, the push rod 9 pushes the elastic clamping column 41, so that the elastic clamping column 41 leaves the clamping cavity 112, the button 91 operation only releases the locking of the elastic clamping column 41, but the fixed clamping column 42 is still firmly clamped in the clamping groove 111, and the front supporting arm 4 will not be immediately separated from the upper disc 1.

[0102] Step two: after the two elastic clamping columns 41 in step one leave the clamping cavity 112, hold the upper disc 1 with your hand, lift the front part of the upper disc 1 upwards, so that the elastic clamping column 41 is separated from the connecting cavity 11 and drives the fixed clamping column 42 to slide from the clamping groove 111, then slowly rotate the upper disc 1, adjust the angle of the upper disc 1, so that the fixed clamping column 42 of the front supporting arm 4 enters the diagonal position of the clamping groove 111 (one fixed clamping column 42 moves to the front end of the corresponding clamping groove 111, and the other fixed clamping column 42 moves to the rear end of the corresponding clamping groove 111), the fixed clamping column 42 is separated from the clamping groove 111, and the separation of the front supporting arm 4 and the upper disc 1 is completed.

[0103] Since the width of the fixed clamping column 42 is designed to be greater than the width of the connecting cavity 11, it can only be separated at a specific angle and operation, avoiding the direct separation of the front supporting arm 4 caused by single unlocking action, the user needs to press the button 91, rotate the upper disc 1 and adjust the angle, and then pull down the front supporting arm 4, so as to complete the disassembly and prevent misdisassembly.

[0104] This disassembly method ensures the controllability and safety of the disassembly process, even if the button 91 is accidentally touched by children during play, the front supporting arm 4 will not suddenly separate from the upper disc 1, greatly improving the safety performance of the walker 8.

Claims

1. A multifunctional walker, comprising an upper disc (1), a lower disc (3), a front support arm (4) and a rear support arm (5), characterized in that: the upper disc (1) is provided with a seat basket mounting port (2) for mounting a seat basket, and the bottom of the upper disc (1) is provided with a first tire (6) to form a toy car (7); the lower parts of the front support arm (4) and the rear support arm (5) are respectively connected with the lower disc (3), and the bottom of the lower disc (3) is provided with a second tire (61); the upper parts of the front support arm (4) and the rear support arm (5) are respectively detachably connected with the upper disc (1) of the toy car (7) to connect the toy car and the lower disc (3) to form a walker (8).

2. The multi-functional stroller of claim 1, wherein: the front support arm (4) and the lower disc (3) are rotationally connected, and the front support arm (4) rotates around the connection between the lower part of the front support arm (4) and the lower disc (3) as the rotation center.

3. The multi-functional stroller of claim 1, wherein: the rear support arm (5) and the lower disc (3) are rotationally connected, and the rear support arm (5) rotates around the connection between the lower part of the rear support arm (5) and the lower disc (3) as the rotation center.

4. The multi-functional stroller of claim 1, wherein: a push rod (9) is further included, the bottom of the upper disc (1) is provided with a connecting cavity (11), the upper disc (1) is provided with a clamping groove (111) and a clamping cavity (112) at the position corresponding to the connecting cavity (11), the push rod (9) is movably arranged in the clamping cavity (112), one end of the push rod (9) extends out of the clamping cavity (112) to form a key (91), and the key (91) is actuated to drive the push rod (9) to slide along the clamping cavity (112); the upper part of the front support arm (4) is provided with an elastic clamping column (41) and a fixed clamping column (42), the upper part of the front support arm (4) is inserted into the connecting cavity (11), the fixed clamping column (42) is inserted into the clamping groove (111), and the elastic clamping column (41) is inserted into the clamping cavity (112) and abuts against the push rod (9) to realize the connection between the front support arm (4) and the upper disc (1); when the key (91) is pressed, the push rod (9) slides and pushes the elastic clamping column (41) away from the clamping cavity (112).

5. The multi-functional stroller of claim 4, wherein: the left and right sides of the front support arm (4) are provided with the fixed clamping columns (42), the distance between the front ends of the fixed clamping columns (42) is greater than the width of the connecting cavity (11), and the length of the clamping groove (111) is greater than the diameter of the fixed clamping column (42).

6. The multi-functional stroller of claim 1, wherein: the bottom of the upper disc (1) is provided with a latch locking seat (10), the surface of the latch locking seat (10) is provided with an opening (102) through which a pressing block (20) passes, and the side wall of the latch locking seat (10) is provided with a socket (101) through which a latch (50) enters.

7. The multi-functional stroller of claim 6, wherein: a latch (50) is further included, the latch (50) is provided with a locking device, and the locking device comprises a pressing block (20). The upper part of the rear support arm (5) is provided with a latch insertion interface (51), the latch insertion interface (51) of the rear support arm (5) is aligned with the insertion opening (101), the latch (50) passes through the latch insertion interface (51) and the insertion opening (101) in sequence and enters the latch locking seat (10), when the latch (50) is completely inserted into the latch locking seat (10), the pressing block (20) extends out of the opening (102), and the latch (50) and the latch locking seat (10) are locked.

8. The multi-functional stroller of claim 7, wherein: The locking device further comprises a spring (30) and a screw (40), the latch (50) is provided with a notch (501), the screw (40) is movably arranged at the notch (501), the pressing block (20) is arranged in the notch (501), the lower end of the pressing block (20) is connected with the screw (40), and the screw (40) limits the stroke of the pressing block (20). The spring (30) is sleeved at the lower end of the pressing block (20), one end of the spring (30) abuts against the bottom of the notch (501), the other end of the spring (30) abuts against the pressing block (20), and the spring (30) constitutes a reset structure of the pressing block (20).

9. The multi-functional stroller of claim 8, wherein: The latch insertion interface (51) of the rear support arm (5) is aligned with the insertion opening (101), the latch (50) passes through the latch insertion interface (51) and the insertion opening (101) in sequence and enters the latch locking seat (10), the pressing block (20) is pushed to press the spring (30) when the latch (50) enters the latch locking seat (10), the spring (30) is reset to push the pressing block (20) to pass through the opening (102) when the latch (50) is completely inserted into the latch locking seat (10), and the latch (50) and the latch locking seat (10) are locked.

10. The multi-functional stroller of claim 7, wherein: The pressing block (20) is provided with a guide inclined surface (201) facing the insertion opening (101).

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