Child tricycle

Abstract

A supporting frame assembly comprises a main supporting frame, a first side support and a second side support, a first mounting sleeve and a second mounting sleeve are arranged at the two ends of the main supporting frame respectively, the first side support is inserted into the upper portion of the main supporting frame, and the second side support is inserted into the lower portion of the main supporting frame. The seat assembly comprises a saddle seat and a first sliding piece, the lower portion of the saddle seat is connected with the first sliding piece, and the first sliding piece can slide along the first side support in a reciprocating mode. The rear wheel support assembly comprises rear wheel supports and a second sliding piece, the rear wheel supports are arranged on the two sides of the second sliding piece, and the second sliding piece can slide along the second side support in a reciprocating mode. The front wheel support assembly comprises a handlebar rod, a telescopic sleeve and a front wheel support, one end of the handlebar rod is inserted into the telescopic sleeve, the telescopic sleeve and the front wheel support are inserted into the two ends of the first installation sleeve respectively, and the telescopic sleeve can slide in the first installation sleeve in a telescopic mode. The hand push rod assembly comprises a push rod sleeve and a telescopic rod, one end of the push rod sleeve is inserted into the second mounting sleeve, and the telescopic rod can slide telescopically in the push rod sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of children's tricycles, in particular to a children's tricycle. Background Art

[0002] Children's tricycles are currently very popular among young children. Existing children's tricycles have single functions, occupy a large space, are not easy to store, and still have a lot of room for improvement.

[0003] Based on the above-mentioned shortcomings, the present application proposes to improve the structure of the children's tricycle. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a children's tricycle in view of the above-mentioned deficiencies in the prior art.

[0005] To achieve its purpose, the utility model adopts the following technical solutions:

[0006] A children's tricycle comprises: a support frame assembly, the support frame assembly comprises a main support frame, a side support frame 1 and a side support frame 2, the two ends of the main support frame are respectively provided with a mounting sleeve 1 and a mounting sleeve 2, the upper middle and rear part of the main support frame is plugged into the side support frame 1, and the lower part of the main support frame is plugged into the side support frame 2; a seat assembly, the seat assembly comprises a vehicle seat, a base, and a sliding member 1, the vehicle seat is installed above the base, the lower part of the base is connected to the sliding member 1, the side support frame 1 passes through the sliding member 1, and the sliding member 1 can slide back and forth along the side support frame 1; a rear wheel support assembly, the rear wheel support assembly comprises A rear wheel bracket and a second sliding member, wherein the rear wheel bracket is arranged on both sides of the second sliding member, the second side bracket penetrates the second sliding member, and the second sliding member can slide back and forth along the second side bracket; a front wheel bracket assembly, wherein the front wheel bracket assembly includes a handlebar rod, a telescopic sleeve, and a front wheel bracket, one end of the handlebar rod is inserted into the telescopic sleeve, the telescopic sleeve and the front wheel bracket are respectively inserted into the two ends of the first mounting sleeve, and the telescopic sleeve can telescope and slide in the first mounting sleeve; a push rod assembly, wherein the push rod assembly includes a push rod sleeve and a telescopic rod, one end of the push rod sleeve is inserted into the second mounting sleeve, and the telescopic rod can telescope and slide in the push rod sleeve.

[0007] Preferably, the sliding member has an axial hole passing through it, a locking hole is provided at the bottom of the axial hole, a locking shaft is inserted into the axial hole, and a control key is provided at one end of the locking shaft; a recess is provided on the wall of the locking shaft, and the recess is adapted to a portion of the side bracket protruding from the locking hole.

[0008] Preferably, the rear wheel bracket assembly also includes a limit buckle and an eccentric handle, the limit buckle is movably arranged inside one end of the sliding member 2, the top block on the top of the limit buckle can interfere with the side bracket 2, and a compression spring is provided between the limit buckle and the bottom plate of the sliding member 2; the eccentric handle is hinged to one end of the sliding member 2 away from the limit buckle, and the protrusion of the eccentric handle can interfere with the side bracket 2.

[0009] Preferably, pedals are detachably provided on both sides of the front wheel bracket, and the pedals are connected to the front wheel of the vehicle installed on the inner side of the front wheel bracket.

[0010] Preferably, the main support frame is provided with a socket near the mounting sleeve 1, and the pedal is detachably mounted in the socket.

[0011] Preferably, a rear wheel is mounted on the end of the rear wheel support, and the rear wheel can reciprocate between the inner side and the outer side of the end of the rear wheel support.

[0012] Preferably, a fixing part is provided at the end of the rear wheel bracket, and a rotating part is provided in the middle part of one side of the rear wheel of the vehicle, the rotating part is located below the fixed part and is connected through a central axis, and a first button is provided above the fixed part; tooth grooves are provided inside the rotating part and the fixed part, and a tooth block is installed in the tooth groove, and a leg at one end of the first button passes through the fixed part and abuts against the tooth block, and a compression spring is provided between the tooth block and the rotating part.

[0013] Preferably, the vehicle seat comprises a large seat plate, a backrest plate, and a fence frame, the backrest plate can be rotatably installed on both sides of one end of the large seat plate, the fence frame comprises a vertical frame and a U-shaped frame, one end of the vertical frame is rotatably hinged to the middle part of one end of the large seat plate away from the backrest plate, and the other end is rotatably connected to the middle part of the U-shaped frame, and both ends of the U-shaped frame are rotatably connected to the backrest plate.

[0014] Preferably, the vehicle seat is a small seat board.

[0015] Preferably, the push rod assembly also includes a push handle, on which a second button can be pressed to unlock the telescopic rod and the push rod cover; a handlebar is provided on the top of the handlebar rod, and a third button can be pressed on one side of the telescopic cover to unlock the telescopic cover and the installation cover.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a children's tricycle, by respectively arranging a side bracket one and a side bracket two above and below a main support frame, and arranging a slidable sliding member one on the side bracket one, so that the seat on the sliding member one can be moved along the side bracket one with the sliding member one, so as to adjust the position of the seat. The user can make adjustments according to actual needs, which is more convenient to use. When it is necessary to adjust the position of the seat, it is only necessary to rotate a control key to drive the locking shaft to rotate in a locking hole. When the recessed portion cooperates with the portion of the side bracket one protruding from the locking hole, the sliding member one can slide along the side bracket one, so that the position of the seat can be adjusted. The control key is rotated to make the recessed portion of the locking shaft move away from the portion of the side bracket one protruding from the locking hole, so that the sliding member one and the side bracket one are locked, thereby fixing the seat.

[0018] A slidable sliding member 2 is provided on the side bracket 2, so that the rear wheel brackets on both sides of the sliding member 2 can be moved along the side bracket 2 with the sliding member 2, so as to adjust the position of the rear wheel bracket for easy storage; when the position of the rear wheel bracket needs to be adjusted, the eccentric handle is rotated to rotate the protruding part away from the side bracket 2, and then the limit buckle is pressed to make the top block away from the side bracket 2, thereby unlocking the sliding member 2 and the side bracket 2, and the position of the rear wheel bracket can be adjusted at this time.

[0019] In addition, the utility model can be used for children to ride and play, and can also be used as a cart for parents to push, so that the tricycle can be used in a variety of ways and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0021] Figure 1 It is a structural stereogram of the first embodiment;

[0022] Figure 2 It is a disassembly diagram of the sliding member 1 and the side bracket 1 in the first embodiment and the second embodiment;

[0023] Figure 3 It is a disassembly diagram of the sliding member 1 and the locking shaft in the first and second embodiments;

[0024] Figure 4 It is a schematic diagram of the connection relationship between the sliding member 2 and the side bracket 2 in the first and second embodiments;

[0025] Figure 5 It is a structural schematic diagram of the sliding member 2 in the first embodiment and the second embodiment;

[0026] Figure 6 Schematic diagram of the sliding member 2 in Embodiment 1 and Embodiment 2 from other viewing angles;

[0027] Figure 7It is a schematic diagram of the structure of the limit buckle and the eccentric handle in the first and second embodiments;

[0028] Figure 8 It is a disassembly diagram of the fixed part, gear block and rotating part in Example 1 and Example 2;

[0029] Fig. 9 It is a structural side view of the rear wheel support of the first embodiment moving along the side support 2;

[0030] Fig.10 It is a schematic diagram of the rear wheel of the vehicle of the first embodiment rotating to the inner side of the rear wheel bracket;

[0031] Fig.11 It is a structural side view of the second embodiment;

[0032] Fig.12 It is a structural side view of the rear wheel support of the second embodiment moving along the second side support;

[0033] Fig.13 It is a schematic diagram of the rear wheel of the vehicle of the second embodiment rotating to the inner side of the rear wheel bracket;

[0034] In the figure:

[0035] 100-support frame assembly; 110-main support frame; 111-installation sleeve 1; 112-installation sleeve 2; 113-socket; 120-side bracket 1; 130-side bracket 2;

[0036] 200-seat assembly; 210-vehicle seat; 211-large seat board; 212-backrest board; 213-fence frame; 2131-vertical frame; 2132-U-shaped frame; 214-small seat board; 220-base; 230-sliding member 1; 231-axis hole; 232-locking hole; 233-locking shaft; 2331-recessed part; 234-control key;

[0037] 300-rear wheel bracket assembly; 310-rear wheel bracket; 311-fixing part; 312-first button; 320-sliding member 2; 321-bottom plate; 330-limiting buckle; 331-top block; 340-eccentric handle; 341-protruding part; 350-rear wheel; 351-rotating part; 360-tooth groove; 370-tooth block;

[0038] 400-front wheel bracket assembly; 410-handlebar; 420-telescopic sleeve; 421-third button; 430-front wheel bracket; 440-front wheel; 450-pedal; 460-handlebar;

[0039] 500 - push rod assembly; 510 - push rod sleeve; 520 - telescopic rod; 530 - push handle; 531 - second button. DETAILED DESCRIPTION

[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments; in the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present invention. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. In addition, for the sake of clarity and brevity, the description of known functions and structures is omitted.

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other. Example

[0042] like Figure 1-10 The present embodiment shows a children's tricycle, comprising: a support frame assembly 100, a seat assembly 200, a rear wheel support assembly 300, a front wheel support assembly 400 and a push rod assembly 500, wherein the support frame assembly 100 comprises a main support frame 110, a side support 1 120 and a side support 2 130, and the two ends of the main support frame 110 are respectively provided with a mounting sleeve 1 111 and a mounting sleeve 2 112, and the side support 1 120 is plugged into the middle and rear part of the upper part of the main support frame 110, and the main support frame 110 is provided with a side support 1 120. The side bracket 110 is inserted into the side bracket 2 130 below; the seat assembly 200 includes a vehicle seat 210, a base 220, and a sliding member 230. The vehicle seat 210 is installed above the base 220, and the sliding member 230 is connected below the base 220. The side bracket 120 passes through the sliding member 230, and the sliding member 230 can slide back and forth along the side bracket 120; the rear wheel bracket assembly 300 includes a rear wheel bracket 310 and a sliding member 320. The rear wheel bracket 310 is set on the sliding member The side bracket 130 passes through the sliding member 320 on both sides, and the sliding member 320 can slide back and forth along the side bracket 130; the front wheel bracket assembly 400 includes a handlebar rod 410, a telescopic sleeve 420, a front wheel bracket 430, and a handlebar 460. One end of the handlebar rod 410 is plugged into the telescopic sleeve 420, and the telescopic sleeve 420 and the front wheel bracket 430 are respectively plugged into the two ends of the mounting sleeve 111. The telescopic sleeve 420 can telescopically slide in the mounting sleeve 111, and the handlebar rod A handlebar 460 is provided on the top of 410, and a third button 421 is pressable on the side of the telescopic sleeve 420 for unlocking the telescopic sleeve 420 and the mounting sleeve 1 111; the push rod assembly 500 includes a push rod sleeve 510, a telescopic rod 520, and a push handle 530. One end of the push rod sleeve 510 is inserted into the mounting sleeve 2 112, and the telescopic rod 520 can be telescopically slid in the push rod sleeve 510. A second button 531 is pressable on the push handle 530 for unlocking the telescopic rod 520 and the push rod sleeve 510.

[0043] Specifically, the children's tricycle of this embodiment is provided with a side bracket 120 and a side bracket 2 130 respectively above and below the main support frame 110, and a slidable sliding member 1 230 is provided on the side bracket 120, so that the seat 210 on the sliding member 1 230 can be moved along the side bracket 120 with the sliding member 1 230, so as to adjust the position of the seat 210, and the user can adjust it according to actual needs, which is more convenient to use; a slidable sliding member 2 320 is provided on the side bracket 2 130, so that the rear wheel brackets 310 on both sides of the sliding member 2 320 can be moved along the side bracket 2 130 with the sliding member 2 320, so as to adjust the position of the rear wheel bracket 310 for easy storage; the telescopic sleeve 420 can be telescoped in the mounting sleeve 111, thereby driving the handlebar rod 410 to telescope, so as to adjust the position of the handlebar rod 410 for easy storage; the telescopic rod 520 can be telescoped in the push rod sleeve 510, so as to adjust the position of the push handle 530 for storage.

[0044] In this embodiment, an axial hole 231 passes through the interior of the sliding member 230, a locking hole 232 is provided at the bottom of the axial hole 231, a locking shaft 233 is inserted into the axial hole 231, and a control key 234 is provided at one end of the locking shaft 233; a recessed portion 2331 is provided on the shaft wall of the locking shaft 233, and the recessed portion 2331 is adapted to the portion of the side bracket 120 protruding from the locking hole 232.

[0045] Specifically, rotating the control key 234 can make the locking shaft 233 rotate in the locking hole 232. When the recessed portion 2331 cooperates with the portion of the side bracket 120 protruding from the locking hole 232, the sliding member 230 can slide along the side bracket 120. When the sliding member 230 moves to the specified position, the control key 234 is rotated to make the recessed portion 2331 of the locking shaft 233 move away from the portion of the side bracket 120 protruding from the locking hole 232. The shaft wall of the locking shaft 233 is pressed against the portion of the side bracket 120 protruding from the locking hole 232, thereby locking the sliding member 230 and the side bracket 120. Therefore, the seat 210 is fixed and the tricycle can be used normally.

[0046] In this embodiment, the rear wheel bracket assembly 300 also includes a limit buckle 330 and an eccentric handle 340. The limit buckle 330 is movably arranged inside one end of the sliding member 320. The top block 331 on the top of the limit buckle 330 can interfere with the side bracket 130. A compression spring is provided between the limit buckle 330 and the bottom plate 321 of the sliding member 320. The eccentric handle 340 is hinged to one end of the sliding member 320 away from the limit buckle 330. The protrusion 341 of the eccentric handle 340 can interfere with the side bracket 130.

[0047] Specifically, when the tricycle of the present embodiment is in normal use, the top block 331 of the limit buckle 330 abuts against the second side bracket 130, and the protrusion 341 of the eccentric handle 340 abuts against the second side bracket 130. When the position of the rear wheel bracket 310 needs to be adjusted, the eccentric handle 340 is rotated to rotate the protrusion 341 away from the second side bracket 130, and then the limit buckle 330 is pressed, the compression spring contracts, and the top block 331 is moved away from the second side bracket 130, thereby realizing the second sliding member 320 The second sliding member 320 is unlocked from the side bracket 130, and the position of the rear wheel bracket 310 is adjusted. After moving to a suitable position, the limit buckle 330 is loosened, the compression spring is reset, and the top block 331 is in contact with the second side bracket 130 again to achieve the limit. Then the eccentric handle 340 is rotated, and the protrusion 341 is in contact with the second side bracket 130 again, so that the sliding member 320 and the second side bracket 130 are locked, and the tricycle can be used normally.

[0048] In this embodiment, pedals 450 are detachably provided on both sides of the front wheel bracket 430, and the pedals 450 are connected to the front wheel 440 installed on the inner side of the front wheel bracket 430; a socket 113 is provided near the mounting sleeve 111 of the main support frame 110, and the pedals 450 are detachably installed in the socket 113.

[0049] Specifically, the pedals 450 of this embodiment can be installed on both sides of the front wheel of the tricycle, so that children can ride normally when playing, or they can be installed in the socket 113 of the main support frame. When the children do not want to ride, they can step on the pedals 450, and the parents can push the tricycle by holding the handle 530, making the tricycle more functional and more convenient to use.

[0050] In this embodiment, a rear wheel 350 is installed at the end of the rear wheel bracket 310, and the rear wheel 350 can reciprocate between the inner side and the outer side of the end of the rear wheel bracket 310; wherein, a fixing portion 311 is provided at the end of the rear wheel bracket 310, and a rotating portion 351 is provided in the middle of one side of the rear wheel 350, the rotating portion 351 is located below the fixing portion 311 and connected through the central axis, and a first button 312 is provided above the fixing portion 311; a tooth groove 360 ​​is provided inside the rotating portion 351 and the fixing portion 311, and a tooth block 370 is installed in the tooth groove 360, a leg at one end of the first button 312 passes through the fixing portion 311 and abuts against the tooth block 370, and a compression spring is provided between the tooth block 370 and the rotating portion 351.

[0051] Specifically, the rear wheel 350 of the vehicle in this embodiment can be located on the outside of the rear wheel bracket 310, or the rear wheel 350 can be rotated to be located on the inside of the rear wheel bracket 310, thereby reducing the space occupied by the tricycle and facilitating storage; when it is necessary to change the position of the rear wheel 350, the first button 312 is pressed, the compression spring contracts, and the support leg of the first button 312 presses the tooth block 370, so that the tooth block 370 is separated from the tooth groove 360 ​​of the fixed part 311 and completely enters the tooth groove 360 ​​of the rotating part 351. At this time, the rotating part 351 can be rotated 180° to rotate the rear wheel 350 to the inside of the rear wheel bracket 310, effectively reducing the occupied idle space.

[0052] In this embodiment, the vehicle seat 210 includes a large seat plate 211, a backrest plate 212, and a fence frame 213. The backrest plate 212 can be rotatably installed on both sides of one end of the large seat plate 211. The fence frame 213 includes a vertical frame 2131 and a U-shaped frame 2132. One end of the vertical frame 2131 is rotatably hinged to the middle part of one end of the large seat plate 211 away from the backrest plate 212, and the other end is rotatably connected to the middle part of the U-shaped frame 2132. Both ends of the U-shaped frame 2132 are rotatably connected to the backrest plate 212.

[0053] Specifically, the vehicle seat 210 of the present embodiment is a large seat, and the backrest board 212, the fence frame 213 and the large seat board 211 can be linked to achieve folding to reduce the occupied space and facilitate storage. In addition, the large seat can be used for children to ride and play, and can also be used as a stroller for parents to ride, making the tricycle diversified and applicable to a wider range of uses. Example

[0054] like Figure 2-8 , Figure 11-13 , is a children's tricycle of this embodiment. The difference between this tricycle and the first embodiment is that the seat 210 is a small seat plate 214, which is more compact and easy to carry.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] In the description of the present application, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] The specific embodiments described herein are merely examples of the spirit of the present application. A person skilled in the art of the present application may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present application or exceed the scope defined by the attached claims.

Claims

1. A children's tricycle, characterized in that: include: A support frame assembly (100), the support frame assembly (100) comprising a main support frame (110), a side support frame 1 (120), and a side support frame 2 (130); two ends of the main support frame (110) are respectively provided with a mounting sleeve 1 (111) and a mounting sleeve 2 (112); the upper middle rear portion of the main support frame (110) is plugged with the side support frame 1 (120), and the lower portion of the main support frame (110) is plugged with the side support frame 2 (130); A seat assembly (200), the seat assembly (200) comprising a vehicle seat (210), a base (220), and a sliding member (230), wherein the vehicle seat (210) is installed above the base (220), the sliding member (230) is connected to the bottom of the base (220), the side bracket (120) passes through the sliding member (230), and the sliding member (230) can slide back and forth along the side bracket (120); A rear wheel support assembly (300), the rear wheel support assembly (300) comprising a rear wheel support (310) and a second sliding member (320), the rear wheel support (310) being arranged on both sides of the second sliding member (320), the second side support (130) penetrating the second sliding member (320), and the second sliding member (320) being capable of reciprocatingly sliding along the second side support (130); A front wheel bracket assembly (400), the front wheel bracket assembly (400) comprising a handlebar (410), a telescopic sleeve (420), and a front wheel bracket (430), one end of the handlebar (410) being plugged into the telescopic sleeve (420), the telescopic sleeve (420) and the front wheel bracket (430) being respectively plugged into two ends of a first mounting sleeve (111), and the telescopic sleeve (420) being capable of telescoping and sliding within the first mounting sleeve (111); A hand push rod assembly (500) comprises a push rod sleeve (510) and a telescopic rod (520), one end of the push rod sleeve (510) being inserted into a second mounting sleeve (112), and the telescopic rod (520) being capable of telescoping and sliding in the push rod sleeve (510).

2. A children's tricycle according to claim 1, characterized in that: An axial hole (231) passes through the interior of the sliding member (230), a locking hole (232) is provided at the bottom of the axial hole (231), a locking shaft (233) is inserted into the axial hole (231), and a control key (234) is provided at one end of the locking shaft (233); a recessed portion (2331) is provided on the shaft wall of the locking shaft (233), and the recessed portion (2331) is adapted to fit with a portion of the side bracket (120) protruding from the locking hole (232).

3. A children's tricycle according to claim 1, characterized in that: The rear wheel support assembly (300) further comprises a limit buckle (330) and an eccentric handle (340); the limit buckle (330) is movably arranged inside one end of the second sliding member (320); a top block (331) on the top of the limit buckle (330) is capable of abutting against the second side support (130); and a compression spring is arranged between the limit buckle (330) and the bottom plate (321) of the second sliding member (320); The eccentric handle (340) is hinged to an end of the second sliding member (320) away from the limiting buckle (330), and the protruding portion (341) of the eccentric handle (340) can interfere with the second side bracket (130).

4. A children's tricycle according to claim 1, characterized in that: Pedals (450) are detachably provided on both sides of the front wheel bracket (430), and the pedals (450) are connected to the front wheel (440) installed on the inner side of the front wheel bracket (430).

5. A children's tricycle according to claim 4, characterized in that: The main support frame (110) is provided with a plug hole (113) at a position close to the first mounting sleeve (111), and the pedal (450) is detachably mounted in the plug hole (113).

6. A children's tricycle according to claim 1, characterized in that: A rear wheel (350) is mounted on the end of the rear wheel bracket (310), and the rear wheel (350) can reciprocate between the inner side and the outer side of the end of the rear wheel bracket (310).

7. A children's tricycle according to claim 6, characterized in that: A fixing portion (311) is provided at the end of the rear wheel bracket (310), a rotating portion (351) is provided at the middle of one side of the rear wheel (350), the rotating portion (351) is located below the fixing portion (311) and is connected via a central axis, and a first button (312) is provided above the fixing portion (311); A tooth groove (360) is provided inside the rotating part (351) and the fixed part (311), a tooth block (370) is installed in the tooth groove (360), a leg at one end of the first button (312) passes through the fixed part (311) and abuts against the tooth block (370), and a compression spring is provided between the tooth block (370) and the rotating part (351).

8. A children's tricycle according to any one of claims 1 to 7, characterized in that: The vehicle seat (210) comprises a large seat plate (211), a backrest plate (212), and a fence frame (213); the backrest plate (212) is rotatably mounted on both sides of one end of the large seat plate (211); the fence frame (213) comprises a vertical frame (2131) and a U-shaped frame (2132); one end of the vertical frame (2131) is rotatably hinged to the middle of one end of the large seat plate (211) away from the backrest plate (212); the other end of the vertical frame (2131) is rotatably connected to the middle of the U-shaped frame (2132); and both ends of the U-shaped frame (2132) are rotatably connected to the backrest plate (212).

9. A children's tricycle according to any one of claims 1 to 7, characterized in that: The vehicle seat (210) is a small seat board (214).

10. A children's tricycle according to claim 1, characterized in that: The push rod assembly (500) further comprises a push handle (530), on which a second button (531) can be pressed and is used to unlock the telescopic rod (520) and the push rod sleeve (510); A handlebar (460) is provided at the top of the handlebar rod (410), and a third button (421) is provided on one side of the telescopic sleeve (420) for unlocking the telescopic sleeve (420) and the first mounting sleeve (111).

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