Child tricycle convenient to adjust

Abstract

According to the child tricycle convenient and fast to adjust, a user adjusts the position of a cross beam in the front-back direction of the cross beam by operating a seat assembly, namely, the distance between the seat assembly and a pedal is adjusted, and therefore the child tricycle can be suitable for being used by child passengers with different heights, and good riding experience and comfort are provided for the child passengers; meanwhile, the seat assembly can be adjusted to be arranged forwards or backwards by operating the rotating adjusting assembly, the sitting direction of a child passenger is changed, and the multifunctional child seat has the advantages of being convenient to use and adjust and multifunctional.

Description

Technical Field

[0001] The utility model relates to a children's tricycle with convenient adjustment.

Background Art

[0002] Children's vehicles have become common products in the process of children's growth. Common children's vehicles on the market today usually include scooters, balance bikes, pedal bikes, etc.; for example, when a child rider uses a pedal bike, the child holds the steering grips with both hands, sits on the seat, and then drives the pedals with both feet to ride the pedal bike.

[0003] However, most of the seat assemblies of pedal bikes on the market currently can only be fixedly connected to the crossbeam and cannot be adjusted back and forth relative to the crossbeam. Therefore, the above-mentioned pedal bikes cannot meet the usage requirements of child riders of different heights, and there are problems such as inconvenient use, unreasonable design, single function, and low practicability.

[0004] In addition, since most of the seat assemblies of pedal bikes nowadays are fixedly connected, the seat assemblies cannot be rotated back and forth to adapt to different usage scenarios and meet the different needs of users.

[0005] Therefore, the present utility model is studied and proposed in view of the above problems.

Content of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a children's tricycle with convenient adjustment. The user can adjust the position of the seat assembly on the crossbeam in the front-back direction along the crossbeam, that is, adjust the distance between the seat assembly and the pedals, so as to adapt to child riders of different heights, giving the child rider a good riding experience and comfort. At the same time, by operating the rotation adjustment component, the seat assembly can be adjusted to face forward or backward, changing the riding direction of the child rider, and having the characteristics of convenient use, convenient adjustment, and multiple functions.

[0007] The utility model is realized by the following technical solutions:

[0008] A children's tricycle with convenient adjustment, comprising:

[0009] Crossbeam 1;

[0010] Front frame assembly 2, the front frame assembly 2 is connected to the front end of the crossbeam 1, a handlebar assembly is connected above the front frame assembly 2, and a front wheel set is connected below the front frame assembly 2;

[0011] Rear frame assembly 3, the rear frame assembly 3 is connected to the rear of the crossbeam 1, and a rear wheel set is connected to the rear frame assembly 3;

[0012] A seat assembly 4, the seat assembly 4 is slidably and rotatably arranged on the cross beam 1, and a front-back adjustment assembly 5 capable of slidably adjusting the seat assembly 4 in the front-back direction of the cross beam 1 is arranged between the seat assembly 4 and the cross beam 1, and a rotation adjustment assembly 6 capable of rotating the seat assembly 4 relative to the cross beam 1 is further arranged between the seat assembly 4 and the cross beam 1.

[0013] For a children's tricycle with convenient adjustment as described above, the front-back adjustment assembly 5 and the rotation adjustment assembly 6 are configured to simultaneously and correspondingly adjust the front-back and rotation of the seat assembly 4; or, the front-back adjustment assembly 5 and the rotation adjustment assembly 6 are configured to independently and correspondingly adjust the front-back and rotation of the seat assembly 4.

[0014] For a children's tricycle with convenient adjustment as described above, a seat sliding seat 40 is arranged between the seat assembly 4 and the cross beam 1, the seat sliding seat 40 is slidably arranged on the cross beam 1, the seat assembly 4 is rotatably connected to the seat sliding seat 40 through a pivot connecting piece 41, and the pivot connecting piece 41 can move up and down relative to the seat sliding seat 40; the front-back adjustment assembly 5 includes a front-back locking mechanism 51 arranged between the seat assembly 4 or the seat sliding seat 40 and the cross beam 1 for locking the seat sliding seat 40 relative to the cross beam 1 and a front-back unlocking mechanism 52 arranged on the seat assembly 4 for linking the unlocking action of the front-back locking mechanism 51; the front-back unlocking mechanism 52 is configured to link the pivot connecting piece 41 to move up or down relative to the seat sliding seat 40, so as to enable the pivot connecting piece 41 to link the unlocking action of the front-back locking mechanism 51.

[0015] For a children's tricycle with convenient adjustment as described above, the front-back adjustment assembly 5 further includes a cross beam sliding part 53 arranged on the cross beam 1 and extending along the front-back direction of the cross beam 1, and a seat sliding part 54 slidingly matched with the cross beam sliding part 53 is arranged on the seat sliding seat 40.

[0016] For a children's tricycle with convenient adjustment as described above, the cross beam sliding part 53 includes a cross beam sliding convex surface 531 arranged on the upper surface of the cross beam 1 and extending along the front-back direction of the cross beam 1, cross beam sliding ridges 532 arranged on one side or both sides of the cross beam 1, and a cross beam sliding groove 533; the seat sliding part 54 includes a seat sliding concave surface 541 arranged on the seat sliding seat 40 and slidingly matched with the cross beam sliding convex surface 531, a seat sliding groove 542 arranged on the seat sliding seat 40 and slidingly matched with the corresponding cross beam sliding ridge 532, and a seat sliding ridge 543 arranged on the seat sliding seat 40 and slidingly matched with the cross beam sliding groove 533.

[0017] As described above, a children's tricycle with convenient adjustment. The front and rear locking mechanism 51 includes a plurality of front and rear adjustment locking parts 511 arranged on the cross beam 1 at intervals in the front and rear directions of the cross beam 1, and a front and rear adjustment locking member 512 movably arranged on the seat sliding seat 40 up and down and capable of locking and cooperating with the corresponding front and rear adjustment locking parts 511. A front and rear adjustment return member 513 for driving the front and rear adjustment locking member 512 to elastically reset is arranged between the front and rear adjustment locking member 512 and the seat sliding seat 40 or the seat assembly 4; the front and rear unlocking mechanism 52 drives the unlocking action of the front and rear adjustment locking member 512 through the pivot connecting member 41.

[0018] As described above, a children's tricycle with convenient adjustment. The front and rear unlocking mechanism 52 includes a front and rear unlocking operating member 521 movably arranged on the seat assembly 4. A front and rear unlocking linkage assembly 522 for linking the corresponding up and down movement of the pivot connecting member 41 when the front and rear unlocking operating member 521 moves relative to the seat assembly 4 is arranged between the front and rear unlocking operating member 521 and the pivot connecting member 41; a front and rear unlocking return member 523 for driving the front and rear unlocking operating member 521 to elastically reset is arranged between the front and rear unlocking operating member 521 and the seat assembly 4.

[0019] As described above, a children's tricycle with convenient adjustment. The front and rear unlocking linkage assembly 522 includes front and rear unlocking linkage inclined parts respectively arranged on the front and rear unlocking operating member 521 and the pivot connecting member 41 and used in cooperation with each other.

[0020] As described above, a children's tricycle with convenient adjustment. A seat sliding seat 40 is arranged between the seat assembly 4 and the cross beam 1. The seat sliding seat 40 is slidably adjusted on the cross beam 1. The seat assembly 4 is rotatably connected to the seat sliding seat 40 through a pivot connecting member 41; the rotation adjustment assembly 6 is located between the seat assembly 4 and the seat sliding seat 40; the rotation adjustment assembly 6 includes a plurality of rotation adjustment locking parts 61 arranged on the seat sliding seat 40 and a rotation adjustment locking member 62 slidably arranged on the seat assembly 4 and locking and cooperating with the corresponding rotation adjustment locking parts 61. A rotation adjustment return member 63 for driving the rotation adjustment locking member 62 to elastically reset is arranged between the rotation adjustment locking member 62 and the seat assembly 4.

[0021] As described above, a children's tricycle with convenient adjustment. Both the front frame assembly 2 and the rear frame assembly 3 are configured to be rotatably folded or rotatably unfolded in the front and rear directions of the cross beam 1. A synchronous moving member is arranged between the front frame assembly 2 and the rear frame assembly 3 so that the two can be simultaneously rotatably folded or rotatably unfolded.

[0022] Compared with the prior art, the present utility model has the following advantages:

[0023] 1. When the present utility model is adjusted and used, the user can adjust the position of the seat assembly in the front and rear directions of the cross beam through the front and rear adjustment assembly, so as to adjust the distance between the seat assembly and the pedal connected to the front wheel set. That is, when the seat assembly is adjusted from the front end of the cross beam to the rear end of the cross beam, the distance between the seat assembly and the pedal is increased; when the seat assembly is adjusted from the rear end of the cross beam to the front end of the cross beam, the distance between the seat assembly and the pedal is decreased, so as to adapt to child riders of different heights, giving child riders a good riding experience and comfort. It has the characteristics of convenient use, convenient adjustment and multiple functions. In addition, by operating the rotation adjustment assembly, the seat assembly can be adjusted to face forward or backward, and the riding direction of the child rider can be changed. That is, when the seat assembly faces forward, the child rider rides forward and can step on the pedal to ride; when the seat assembly faces backward, the child rider faces the pusher, which is convenient for face-to-face communication.

[0024] 2. In the present utility model, the front and rear adjustment assembly and the rotation adjustment assembly can adjust the front and rear and rotation of the seat assembly simultaneously or independently, with convenient adjustment and multiple functions.

[0025] 3. The front and rear unlocking mechanism of the present utility model pivots the connecting piece to link the unlocking action of the front and rear locking mechanisms, which can avoid the problem of component interference during the rotation of the seat assembly relative to the seat sliding seat, and solve the problem that in the prior art, the front and rear unlocking mechanism links the unlocking of the front and rear locking mechanisms through an unlocking pull rope, resulting in the problem of the unlocking pull rope winding around the pivoting connecting piece and getting stuck and interfering during the rotation of the seat assembly. It has the characteristics of convenient and reliable unlocking and good unlocking linkage effect.

[0026] 4. In the present utility model, between the seat sliding seat and the cross beam, the convex surface of the cross beam slides and fits with the concave surface of the seat sliding, the convex strip of the cross beam slides and cooperates with the groove of the seat sliding, and the groove of the cross beam slides and cooperates with the convex strip of the seat sliding, which can make the fit between the seat sliding seat and the cross beam closer, avoid phenomena such as pinching hands during the adjustment process by the user or the riding process of the child rider, and is safe and reliable to use. In addition, it can make the front and rear sliding adjustment between the seat sliding seat and the cross beam more stable and smooth, and can also make the connection between the seat sliding seat and the cross beam more stable, avoiding the seat sliding seat shaking relative to the cross beam.

[0027] 5. For the convenience of operation, a synchronous member is provided between the front frame assembly and the rear frame assembly so that the two can be rotated and folded or rotated and unfolded simultaneously.

Description of the Drawings

[0028] The following further details the specific embodiments of the present utility model with reference to the drawings, where:

[0029] Figure 1 is one of the three-dimensional views of the present utility model.

[0030] Figure 2 This is the second perspective view of the present utility model.

[0031] Figure 3 This is the third perspective view of the present utility model.

[0032] Figure 4 This is the side view of the present utility model.

[0033] Figure 5 This is the cross-sectional view of the front-back adjustment assembly in the present utility model.

[0034] Figure 6 is Figure 5 the enlarged schematic view of A in

[0035] Figure 7 This is the cross-sectional view of the rotation adjustment assembly in the present utility model.

[0036] Figure 8 is Figure 7 the enlarged schematic view of B in

[0037] Figure 9 This is the first exploded view of the front-back adjustment assembly and the rotation adjustment assembly in the present utility model.

[0038] Figure 10 This is the second exploded view of the front-back adjustment assembly and the rotation adjustment assembly in the present utility model.

Specific Embodiments

[0039] The following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0040] As Figures 1-10 shown, a child tricycle with convenient adjustment of the present utility model includes:

[0041] Cross beam 1;

[0042] Front frame assembly 2, the front frame assembly 2 is connected to the front end of the cross beam 1, a handlebar assembly is connected above the front frame assembly 2, and a front wheel set is connected below the front frame assembly 2;

[0043] Rear frame assembly 3, the rear frame assembly 3 is connected to the rear part of the cross beam 1, and a rear wheel set is connected to the rear frame assembly 3;

[0044] Seat assembly 4, the seat assembly 4 is slidably and rotatably arranged on the cross beam 1. A front-back adjustment assembly 5 is provided between the seat assembly 4 and the cross beam 1, which can enable the seat assembly 4 to slide and adjust in the front-back direction along the cross beam 1. A rotation adjustment assembly 6 is also provided between the seat assembly 4 and the cross beam 1, which can enable the seat assembly 4 to rotate relative to the cross beam 1. When the present utility model is adjusted and used, the user can adjust the position of the seat assembly in the front-back direction of the cross beam through the front-back adjustment assembly, so as to adjust the distance between the seat assembly and the footrest connected to the front wheel set. That is, when the seat assembly is adjusted from the front end of the cross beam to the rear end of the cross beam, the distance between the seat assembly and the footrest is increased; when the seat assembly is adjusted from the rear end of the cross beam to the front end of the cross beam, the distance between the seat assembly and the footrest is decreased, so as to adapt to children riders of different heights, giving children riders a good riding experience and comfort, and having the characteristics of convenient use, convenient adjustment and multi-function. In addition, by operating the rotation adjustment assembly, the seat assembly can be adjusted to face forward or backward, and the riding direction of the children rider can be changed. That is, when the seat assembly faces forward, the children rider rides forward and can step on the footrest to ride; when the seat assembly faces backward, the children rider faces the pusher, which is convenient for face-to-face communication.

[0045] As Figures 1-4 shown, a push rod assembly 7 is connected to the rear end of the cross beam 1 so that the children's tricycle has a pushing function, which is convenient for the user to push and use.

[0046] Further, the front-back adjustment assembly 5 and the rotation adjustment assembly 6 are configured to simultaneously and correspondingly adjust the front-back and rotation of the seat assembly 4, and the operation is convenient.

[0047] Further, the front-back adjustment assembly 5 and the rotation adjustment assembly 6 are configured to independently and correspondingly adjust the front-back and rotation of the seat assembly 4, and the structure is stable and reliable, avoiding interference.

[0048] As Figures 6-10As shown, a seat sliding base 40 is provided between the seat assembly 4 and the cross beam 1. The seat sliding base 40 is slidably and adjustably arranged on the cross beam 1. The seat assembly 4 is rotatably connected to the seat sliding base 40 through a pivot connecting member 41. The pivot connecting member 41 can move up and down relative to the seat sliding base 40. The front and rear adjustment assembly 5 includes a front and rear locking mechanism 51 provided between the seat assembly 4 or the seat sliding base 40 and the cross beam 1 for locking the seat sliding base 40 relative to the cross beam 1, and a front and rear unlocking mechanism 52 provided on the seat assembly 4 for linking the unlocking action of the front and rear locking mechanism 51. The front and rear unlocking mechanism 52 is configured to link the pivot connecting member 41 to move up or down relative to the seat sliding base 40, so as to make the pivot connecting member 41 link the unlocking action of the front and rear locking mechanism 51. In this embodiment, the front and rear unlocking mechanism links the unlocking action of the front and rear locking mechanism through the pivot connecting member, which can avoid the problem of component interference during the rotation of the seat assembly relative to the seat sliding base, and solve the problem that in the prior art, the front and rear unlocking mechanism links the unlocking of the front and rear locking mechanism through an unlocking cable, resulting in the problem of the unlocking cable winding around the pivot connecting member and getting stuck and interfering during the rotation of the seat assembly. It has the characteristics of convenient and reliable unlocking and good unlocking linkage effect.

[0049] As Figures 5-10 shown, the front and rear adjustment assembly 5 further includes a cross beam sliding part 53 provided on the cross beam 1 and extending along the front and rear direction of the cross beam 1. A seat sliding member 54 slidably engaged with the cross beam sliding part 53 is provided on the seat sliding base 40. The cross beam sliding part 53 includes a cross beam sliding convex surface 531 provided on the upper surface of the cross beam 1 and extending along the front and rear direction of the cross beam 1, a cross beam sliding convex strip 532 provided on one side or both sides of the cross beam 1, and a cross beam sliding groove 533. The seat sliding member 54 includes a seat sliding concave surface 541 provided on the seat sliding base 40 and slidably engaged with the cross beam sliding convex surface 531, a seat sliding groove 542 provided on the seat sliding base 40 and slidably engaged with the corresponding cross beam sliding convex strip 532, and a seat sliding convex strip 543 provided on the seat sliding base 40 and slidably engaged with the cross beam sliding groove 533, which can make the seat sliding base fit more closely with the cross beam, avoid phenomena such as pinching hands during the adjustment process by the user or during the riding process of a child rider, and is safe and reliable to use. In addition, it can make the front and rear sliding adjustment between the seat sliding base and the cross beam more stable and smooth, and can also make the connection between the seat sliding base and the cross beam more stable, avoiding the seat sliding base shaking relative to the cross beam.

[0050] As Figure 8 shown, the seat sliding member 54 wraps and hides the cross beam sliding part 53, which can make the external structure of the present invention more concise.

[0051] As Figures 5-10As shown, in order to ensure reliable adjustment and locking, the front and rear locking mechanism 51 includes a plurality of front and rear adjustment lock parts 511 arranged on the cross beam 1 and spaced apart along the front and rear direction of the cross beam 1, and a front and rear adjustment lock 512 which is movably arranged on the seat sliding seat 40 and can be locked with the corresponding front and rear adjustment lock parts 511, and a front and rear adjustment reset part 513 is provided between the front and rear adjustment lock 512 and the seat sliding seat 40 or the seat assembly 4 for driving the front and rear adjustment lock 512 to elastically reset; the front and rear unlocking mechanism 52 is linked to the unlocking action of the front and rear adjustment lock 512 through the pivot connection 41. The front-to-back locking mechanism 51 further includes a front-to-back locking sliding seat 514 which can slide up and down on the seat sliding seat 40, the front-to-back adjusting lock 512 is relatively fixedly arranged on the front-to-back locking sliding seat 514, the front-to-back adjusting reset member 513 is located between the front-to-back locking sliding seat 514 and the seat assembly, the front-to-back locking sliding seat 514 can be made of plastic, and the front-to-back adjusting lock 512 is made of hard material (iron sheet, steel sheet, etc.), which reduces the manufacturing cost and the replacement and maintenance cost while ensuring the locking strength. Figure 6 , 9 As shown, the pivot connection member 41 is hollow, and the upper end surfaces of the front and rear locking sliding seats 514 are provided with sliding seat positioning concave cavities 515 for inserting and positioning the lower end of the pivot connection member, and the upper end surfaces of the front and rear locking sliding seats 514 and the inner side of the sliding seat positioning concave cavities 515 are provided with sliding seat positioning protrusions 516 that can be penetrated into the inner cavity of the pivot connection member 41, thereby ensuring stable cooperation between the two and smooth rotation of the pivot connection member 41, and having a compact structure.

[0052] For easy disassembly and assembly, the front and rear locking sliding seats 514 are connected to the pivot connection member 41 via upper and lower limit structures 517 so that the front and rear locking sliding seats 514 can move upward or downward with the pivot connection member 41. The upper and lower limit structures can be a limit convex ring engaged with a limit groove, etc. In this embodiment, the upper and lower limit structures include a blocking screw connected to the front and rear locking sliding seats 514 and blocked with the blocking inner step of the pivot connection member 41, such as Figure 6 shown.

[0053] like Figure 9As shown, for convenient unlocking, the front and rear unlocking mechanism 52 includes a front and rear unlocking operating member 521 movably provided on the seat assembly 4. A front and rear unlocking linkage assembly 522 is provided between the front and rear unlocking operating member 521 and the pivot connecting member 41 for driving the pivot connecting member 41 to move up and down correspondingly when the front and rear unlocking operating member 521 moves relative to the seat assembly 4. A front and rear unlocking reset member 523 is provided between the front and rear unlocking operating member 521 and the seat assembly 4 for driving the front and rear unlocking operating member 521 to elastically reset. The front and rear unlocking linkage assembly 522 includes front and rear unlocking linkage inclined portions respectively provided on the front and rear unlocking operating member 521 and the pivot connecting member 41 and cooperating with each other. When unlocking, the user operates the front and rear unlocking operating member 521 to slide relative to the seat assembly 4, so that the front and rear unlocking linkage inclined portions on the front and rear unlocking operating member 521 and the pivot connecting member 41 cooperate with each other to drive the pivot connecting member 41 to drive the front and rear locking sliding seat 514 and the front and rear adjusting locking member 512 to slide upward relative to the seat sliding seat 40, so that the front and rear adjusting locking member 512 is separated from the front and rear adjusting locking portion 511 to release the locking state of the seat sliding seat 40 relative to the cross beam 1. Then, when the seat assembly 4 is adjusted forward or backward along the cross beam 1 to the required position, the force applied to the front and rear unlocking operating member 521 is withdrawn, and the front and rear adjusting reset member 513 drives the front and rear locking sliding seat 514 and the front and rear adjusting locking member 512 to slide downward and reset relative to the seat sliding seat 40, so that the front and rear adjusting locking member 512 is locked and cooperated with the corresponding front and rear adjusting locking portion 511, thereby locking the seat sliding seat 40 relative to the cross beam 1.

[0054] As Figure 7 , 9 , 10 shown, a seat sliding seat 40 is provided between the seat assembly 4 and the cross beam 1. The seat sliding seat 40 is slidably adjusted on the cross beam 1. The seat assembly 4 is rotatably connected to the seat sliding seat 40 through a pivot connecting member 41. The rotation adjustment assembly 6 is located between the seat assembly 4 and the seat sliding seat 40. The rotation adjustment assembly 6 includes a plurality of rotation adjustment locking portions 61 provided on the seat sliding seat 40 and a rotation adjustment locking member 62 slidably provided on the seat assembly 4 and locking and cooperating with the corresponding rotation adjustment locking portions 61. A rotation adjustment reset member 63 is provided between the rotation adjustment locking member 62 and the seat assembly 4 for driving the rotation adjustment locking member 62 to elastically reset. When rotating and adjusting, the user operates the rotation adjustment locking member 62 to slide relative to the seat assembly 4, so that the locking end of the rotation adjustment locking member 62 is separated from the rotation adjustment locking portion 61, releasing the locking state of the seat assembly 4 relative to the seat sliding seat 40. Then, when the seat assembly 4 is rotated relative to the seat sliding seat 40 to the required orientation, the force applied to the rotation adjustment locking member 62 is withdrawn, and the rotation adjustment reset member 63 drives the rotation adjustment locking member 62 to slide and reset, so that the locking end of the rotation adjustment locking member 62 is locked and cooperated with the rotation adjustment locking portion 61. As Figure 10As shown, the seat sliding base 40 includes a sliding base body made of plastic and a sliding base plate body fixedly connected to the sliding base body relatively and made of a hard material. The rotation adjustment locking portion 61 is provided on the peripheral wall of the sliding base plate body to ensure the locking structure strength.

[0055] For convenient folding and unfolding, the front frame assembly 2 and the rear frame assembly 3 are both configured to be rotatably folded or unfolded forward and backward along the cross beam 1. A synchronous member is provided between the front frame assembly 2 and the rear frame assembly 3 so that the two can be rotatably folded or unfolded simultaneously.

[0056] The rear frame assembly 3 includes a left rear leg and a right rear leg both rotatably connected to the rear of the cross beam 1 along the front and rear direction of the cross beam 1. The left rear leg and the right rear leg are also configured to be rotatable towards each other to close or rotatable away from each other to open, so that the children's tricycle can be switched to a children's two-wheeler for use, with diverse uses.

Claims

1. A children's tricycle with convenient adjustment, characterized in that include: Beam (1); A front frame assembly (2), the front frame assembly (2) being connected to the front end of the cross beam (1), the upper portion of the front frame assembly (2) being connected to a handlebar assembly, and the lower portion of the front frame assembly (2) being connected to a front wheel assembly; A rear frame assembly (3), the rear frame assembly (3) being connected to the rear portion of the cross beam (1), and the rear frame assembly (3) being connected to a rear wheel assembly; A seat assembly (4) is slidably and rotatably arranged on a crossbeam (1), a front-to-back adjustment assembly (5) is arranged between the seat assembly (4) and the crossbeam (1) and enables the seat assembly (4) to be slidably adjusted along the front-to-back direction of the crossbeam (1), and a rotation adjustment assembly (6) is also arranged between the seat assembly (4) and the crossbeam (1) and enables the seat assembly (4) to be rotated relative to the crossbeam (1).

2. A conveniently adjustable children's tricycle according to claim 1, characterized in that The front-rear adjustment component (5) and the rotation adjustment component (6) are configured to simultaneously and correspondingly adjust the front-rear and rotation of the seat component (4); Alternatively, the fore-and-aft adjustment assembly (5) and the rotation adjustment assembly (6) are configured to independently adjust the fore-and-aft and rotation of the seat assembly (4) accordingly.

3. The easy-to-adjust children's tricycle according to claim 1, characterized in that A seat sliding seat (40) is provided between the seat assembly (4) and the cross beam (1); the seat sliding seat (40) is slidably and adjustably arranged on the cross beam (1); the seat assembly (4) is rotatably connected to the seat sliding seat (40) via a pivot connection (41); and the pivot connection (41) can move up and down relative to the seat sliding seat (40); The front-rear adjustment assembly (5) comprises a front-rear locking mechanism (51) arranged between the seat assembly (4) or the seat sliding seat (40) and the cross beam (1) for locking the seat sliding seat (40) relative to the cross beam (1), and a front-rear unlocking mechanism (52) arranged on the seat assembly (4) for linking the unlocking action of the front-rear locking mechanism (51); The front and rear unlocking mechanisms (52) are configured to link the pivoting connection member (41) to move upward or downward relative to the seat sliding seat (40), thereby enabling the pivoting connection member (41) to link the front and rear locking mechanisms (51) to perform unlocking actions.

4. The easy-to-adjust children's tricycle according to claim 3, characterized in that The front-rear adjustment assembly (5) further comprises a crossbeam sliding portion (53) arranged on the crossbeam (1) and extending in the front-rear direction of the crossbeam (1), and the seat sliding seat (40) is provided with a seat sliding member (54) which is slidably matched with the crossbeam sliding portion (53).

5. The easy-to-adjust children's tricycle according to claim 4, characterized in that The crossbeam sliding portion (53) comprises a crossbeam sliding convex surface (531) provided on the upper surface of the crossbeam (1) and extending in the front-rear direction of the crossbeam (1), a crossbeam sliding convex strip (532) provided on one side or both sides of the crossbeam (1), and a crossbeam sliding groove (533); The seat sliding member (54) comprises a seat sliding concave surface (541) provided on the seat sliding seat (40) and slidably matched with the cross beam sliding convex surface (531), a seat sliding groove (542) provided on the seat sliding seat (40) and slidably matched with the corresponding cross beam sliding convex strip (532), and a seat sliding convex strip (543) provided on the seat sliding seat (40) and slidably matched with the cross beam sliding groove (533).

6. The easy-to-adjust children's tricycle according to claim 3, characterized in that The front-to-back locking mechanism (51) comprises a plurality of front-to-back adjusting locks (511) arranged on the cross beam (1) and spaced apart along the front-to-back direction of the cross beam (1), and a front-to-back adjusting lock (512) movably arranged on the seat sliding seat (40) and lockably matched with the corresponding front-to-back adjusting locks (511); a front-to-back adjusting reset member (513) for driving the front-to-back adjusting lock (512) to elastically reset is arranged between the front-to-back adjusting lock (512) and the seat sliding seat (40) or the seat assembly (4); and the front-to-back unlocking mechanism (52) is linked to the unlocking action of the front-to-back adjusting lock (512) through the pivot connection member (41).

7. The easy-to-adjust children's tricycle according to claim 3, characterized in that The front-to-back unlocking mechanism (52) comprises a front-to-back unlocking operating member (521) movably arranged on the seat assembly (4); a front-to-back unlocking linkage member (522) is arranged between the front-to-back unlocking operating member (521) and the pivoting connecting member (41) for linking the pivoting connecting member (41) to move up and down accordingly when the front-to-back unlocking operating member (521) moves relative to the seat assembly (4); and a front-to-back unlocking reset member (523) is arranged between the front-to-back unlocking operating member (521) and the seat assembly (4) for driving the front-to-back unlocking operating member (521) to elastically reset.

8. The easy-to-adjust children's tricycle according to claim 7, characterized in that The front and rear unlocking linkage assembly (522) comprises front and rear unlocking linkage oblique parts which are respectively arranged on the front and rear unlocking operating members (521) and the pivoting connecting member (41) and cooperate with each other.

9. A conveniently adjustable children's tricycle according to any one of claims 1 to 8, characterized in that A seat sliding seat (40) is provided between the seat assembly (4) and the cross beam (1); the seat sliding seat (40) is slidably and adjustably arranged on the cross beam (1); and the seat assembly (4) is rotatably connected to the seat sliding seat (40) via a pivot connection (41); The rotation adjustment assembly (6) is located between the seat assembly (4) and the seat sliding seat (40); the rotation adjustment assembly (6) comprises a plurality of rotation adjustment lock parts (61) arranged on the seat sliding seat (40) and a rotation adjustment lock member (62) slidably arranged on the seat assembly (4) and locked with the corresponding rotation adjustment lock parts (61); a rotation adjustment reset member (63) for driving the rotation adjustment lock member (62) to elastically reset is arranged between the rotation adjustment lock member (62) and the seat assembly (4).

10. The easy-to-adjust children's tricycle according to claim 1, characterized in that The front frame assembly (2) and the rear frame assembly (3) are both configured to be foldable or unfoldable along the front-rear direction of the crossbeam (1), and a synchronous member is provided between the front frame assembly (2) and the rear frame assembly (3) so that the two can be foldable or unfoldable at the same time.

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