Child tricycle with steerable and quickly detachable seat

Abstract

The utility model relates to a child tricycle with a steerable and quickly detachable seat, which comprises a frame, a front fork, a front wheel, pedals, a bottom tube, a handlebar component, a seat, a leg frame, a rear wheel, a push rod, a seat adjusting mechanism, a steering adjusting mechanism, a pedal unlocking mechanism and a clutch mechanism. The seat adjusting mechanism comprises a base, a rotary table, a first pressing switch and a second pressing switch, the base is arranged on the frame, the top of the rotary table is rotatably connected with the seat, the first pressing switch and the second pressing switch are arranged on the rotary table and penetrate through the base to extend outwards, and two positioning grooves are formed in the side wall of the upper matching cavity. According to the technical scheme, the seat of the child tricycle can be rapidly disassembled and assembled, the orientation angle of the seat can be automatically adjusted, a child can be prevented from directly facing the wind when needed, and therefore the risk of catching a cold is reduced, and parents can conveniently and directly observe the state of the child.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles technical field more specifically, it is a kind of children's tricycle with steering and quick-release seat. BACKGROUND

[0002] Children's tricycle is a kind of riding tool specially designed for infants and young children, usually suitable for 1 to 5 years old children, this kind of child carriage combines the functions of children's tricycle and baby stroller, which can let children ride themselves, and also can be controlled by parents through push rod to control the movement of child carriage.

[0003] In the structure of children's tricycle, the front wheel is usually a driven steering wheel, that is, the front wheel is responsible for controlling the direction, while the rear wheel is a passive wheel, mainly providing support and stability. The handlebar of conventional children's tricycle is directly connected to the front wheel through a steering shaft or connecting rod, forming a whole, and the handlebar and the front wheel always rotate synchronously. This design is to enable children to control the direction of the tricycle by manipulating the handlebar, to exercise their hand-eye coordination and balance.

[0004] The problem of the above structure is that for low-age children, it is often difficult to control the riding direction smoothly through the handlebar when learning to ride, thus there is a high risk of accidents. Secondly, when parents control the riding direction through the push rod, if the child wants to adjust the riding direction by controlling the handlebar at the same time, it will cause conflict in direction control, making steering difficult, unable to complete steering smoothly, and even causing the tricycle to lose control, thus there is also a great safety hazard in this case.

[0005] To this end, the patent with publication number CN217347935U discloses a handlebar steering structure of a child's carriage. The position where the handlebar rod can stay in the connecting sleeve includes a high position stop at a high position and a low position stop at a low position, that is, the handlebar rod can be lifted and lowered. At the same time, a clutch mechanism is provided between the handlebar rod and the connecting cylinder. When the handlebar rod stays at the high position stop, the clutch mechanism is disengaged so that the handlebar assembly can rotate relative to the connecting cylinder in the connecting cylinder. In this way, the front wheel will not rotate synchronously. When the handlebar rod stays at the low position stop, the clutch mechanism is engaged so that the handlebar assembly can be turned with the front fork and the front wheel through the connecting cylinder.

[0006] The handlebar steering structure of the above-mentioned child tricycle still has the following problems: under the action of the clutch mechanism, the handlebar rod needs to be lifted to lock or unlock the front wheel, when the push rod needs to be controlled by the parent alone to adjust the riding direction, the clutch mechanism is disengaged, and the handlebar rod stays at the high position, for children of low age, their body shape is often small, at this time they must lean forward to hold the handlebar, or make the arm excessively stretched to hold the handlebar, to ensure that they sit stably on the seat, obviously, such incorrect riding posture will cause arm and shoulder fatigue, and seriously affect comfort and balance when riding for a long time. Content of the utility model

[0007] In view of the above situation, in order to overcome the above-mentioned problems that the seat angle of the existing child tricycle with quick disassembly function cannot be freely adjusted, the child directly faces the wind when riding, which increases the risk of catching a cold, causes facial discomfort, leads to low head or closed eyes, affects the safety and comfort of riding, and the parent cannot observe the state of the child at any time, which cannot adapt to different riding modes, the utility model aims to provide a child tricycle with a seat that can be quickly disassembled and the angle of which can be autonomously adjusted, so that the child can be prevented from directly facing the wind when needed, thereby reducing the risk of catching a cold, improving comfort, and facilitating the parent to directly observe the state of the child

[0008] In order to achieve the above-mentioned purpose, the technical solution of the utility model is:

[0009] A child tricycle with a steerable and quick disassembly seat, which comprises a frame, a front fork, a front wheel, a foot pedal, a bottom pipe, a handlebar assembly, a seat, a leg support, a rear wheel and a push rod, and further comprises a seat adjusting mechanism, a steering adjusting mechanism, a pedal unlocking mechanism and a clutch mechanism, the seat adjusting mechanism comprises a base, a turntable, a first press switch and a second press switch, the base is arranged on the frame, a lower matching cavity is formed in the top of the base, an upper matching cavity is formed in the bottom of the seat, the turntable is installed in the lower matching cavity and is rotationally connected with the upper matching cavity at the top, the first press switch and the second press switch are arranged on the circumferential wall of the turntable and extend outward through the circumferential wall of the base, two positioning grooves are formed in the side wall of the upper matching cavity, a positioning block is formed in the side wall of the first press switch and is embedded in any one of the positioning grooves, the steering adjusting mechanism is arranged in the frame and is connected with the push rod and the front fork, the pedal unlocking mechanism is arranged between the pedal and the front wheel, the handlebar assembly is arranged at the top of the bottom pipe, and the clutch mechanism is arranged in the bottom pipe and is connected with the handlebar assembly and the front fork.

[0010] As preferred, the seat adjusting mechanism further comprises a first spring and a second spring, two groups of inner switch grooves are formed on the circumferential wall of the rotating table, the first press switch and the second press switch are respectively installed in the two inner switch grooves, and the first spring and the second spring are respectively arranged in the two inner switch grooves, the first spring and the second spring are respectively in abutment with the first press switch and the second press switch, the positioning block is inserted and matched with the positioning groove through the inner switch groove, an outer switch groove corresponding to the inner switch groove is formed on the circumferential wall of the base, a first contact block is formed at the bottom of the first press switch, a second contact block is formed at the bottom of the second press switch, and the first contact block and the second contact block both extend outward through the outer switch groove.

[0011] As preferred, a first guide block is formed on the inner wall of the lower matching cavity, and a first guide groove is correspondingly formed on the outer wall of the rotating table, and the first guide block and the first guide groove are in sliding fit.

[0012] As preferred, the steering adjusting mechanism comprises a front linkage, a rear linkage, a transmission member and hard wires, the top and bottom of the front linkage are respectively formed with an upper shaft body and a lower shaft body, the upper shaft body is connected with the clutch mechanism, the lower shaft body is connected with the front fork, the top of the transmission member is connected with the push rod, and the bottom is connected with the rear linkage, the hard wires are arranged in the frame and have two, the front linkage and the rear linkage are respectively formed with the same number of front insertion holes and rear insertion holes, the front ends of the hard wires are inserted into the front insertion holes, and the rear ends are in sliding fit with the rear insertion holes.

[0013] As preferred, the front fork is formed with a front connecting groove, the upper shaft body is inserted into the front connecting groove, the circumferential wall of the lower shaft body is formed with a front rotation stopping block, the circumferential wall of the front connecting groove is formed with a rotation stopping ring table, the rotation stopping ring table is formed with a front rotation stopping groove, and the front rotation stopping block is inserted into the front rotation stopping groove, the top of the transmission member is formed with a transmission groove, the push rod is inserted into the transmission groove, and the fitting surface between the push rod and the transmission groove is non-circular, the bottom of the transmission member is formed with a transmission rod, the rear linkage is formed with a rear connecting groove, the transmission rod is inserted into the rear connecting groove, the circumferential wall of the transmission rod is formed with a rear rotation stopping block, the inner wall of the rear connecting groove is formed with a rear rotation stopping groove, and the rear rotation stopping block is inserted into the rear rotation stopping groove.

[0014] As preferred, the pedal unlocking mechanism comprises a knob switch and a side shaft, the front wheel is formed with a center installation groove and a side groove, the center installation groove is communicated with the side groove, the pedal is rotationally connected in the center installation groove, the side shaft is inserted into the side groove, the knob switch is connected with the side shaft, the pedal is formed with a chuck, the chuck is formed with a clamping groove, the side shaft is formed with a tab, and the tab is inserted into the clamping groove.

[0015] Preferably, the clutch mechanism includes a support base, a sleeve, a lower clutch component, an upper clutch component, and a toggle switch. The support base is connected to the front fork, and the bottom tube is rotatably connected to the top of the support base. The toggle switch is located on the outer wall of the bottom tube. The sleeve, the lower clutch component, and the upper clutch component are sequentially arranged between the support base and the bottom tube. The lower clutch component is connected to the toggle switch. A clutch block is formed on the top of the lower clutch component, and a clutch groove is correspondingly formed on the bottom of the upper clutch component. The clutch block is embedded in the clutch groove. The outer wall of the clutch block has a lower inclined section, and the inner wall of the clutch groove has a corresponding upper inclined section. The lower inclined section abuts against the upper inclined section. A pin is formed on the bottom of the upper clutch component. An inner sliding channel, a limiting groove, and a locking groove are respectively formed on the lower clutch component, the sleeve, and the support base. The pin slides in the inner sliding channel and is inserted into the limiting groove and the locking groove.

[0016] Preferably, a sleeve is formed inside the bottom tube, a central support rod is formed at the top of the support base, the bottom tube is rotatably connected to the support base by being sleeved on the outside of the central support rod through the sleeve, the insert, the lower clutch and the upper clutch are all sleeved on the outside of the sleeve, a second guide groove is formed on the inner wall of the bottom tube, a second guide block is correspondingly formed on the outer wall of the upper clutch, and the second guide block is slidably engaged in the second guide groove.

[0017] Preferably, the handlebar assembly includes a handlebar stem, a handlebar seat, a latch, a third push-button switch, a slide switch, and a locking block. The top of the bottom tube has a mounting groove, the handlebar seat is hinged in the mounting groove, the handlebar stem is located on top of the handlebar seat, a first movable cavity is formed on the side wall of the mounting groove, and a corresponding second movable cavity is formed on the handlebar seat. The third push-button switch is located in the first movable cavity, and the locking block slides into both the first and second movable cavities, with the mating parts being non-circular. The depth of the second movable cavity matches the locking block, and the locking block abuts against the third push-button switch. The handlebar seat also has a third movable cavity, which communicates with the second movable cavity. The latch slides into the third movable cavity and abuts against the locking block. The slide switch is sleeved on the handlebar stem and connected to the latch.

[0018] Preferably, the handlebar assembly also includes a third spring and a fourth spring. The third spring is disposed in the second movable cavity and abuts against the locking block, while the fourth spring is disposed in the third movable cavity and abuts against the locking tongue.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] (1) When the seat needs to be disassembled, the parents press the first press switch and the second press switch at the same time, so that the first press switch and the second press switch are retracted at the same time until they are separated from the base, so that the limiting of the base is released, and then the rotating table and the seat are disassembled from the base by means of plugging and unplugging, and the corresponding installation is that the rotating table is inserted into the lower matching cavity of the base, and the first press switch and the second press switch can be inserted into the external space again, that is, the rotating table is inserted into the lower matching cavity of the base, and the first press switch and the second press switch can be inserted into the external space again, so that the whole seat can be disassembled and assembled in a short time, thereby realizing quick disassembly and assembly.

[0021] (2) When the parents need to adjust the angle of the seat, the first press switch is pressed to retract it in the internal direction, and the positioning block is retracted synchronously to be separated from the positioning groove, then the parents can rotate the seat according to the needs to adjust the angle, and when the child rides through the push rod, the angle of the seat can be adjusted to avoid the child directly facing the wind, thereby reducing the risk of the child catching a cold, and also preventing the child from lowering his head or closing his eyes due to the influence of the wind, avoiding affecting the vision, and at the same time, the parents can observe the state of the child at any time during the riding process, so that the child can be found in time even if the child has an abnormal condition, thereby better adapting to different riding modes. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the overall structure schematic diagram of the child tricycle of the utility model;

[0023] Figure 2 is the overall structure schematic diagram of the child tricycle seat of the utility model when the rotating table and the base of the seat adjusting mechanism are separated (the dashed arrow is the seat separation direction);

[0024] Figure 3 is the partial structure schematic diagram of the child tricycle seat of the utility model when the rotating table and the base of the seat adjusting mechanism are separated (the dashed arrow is the seat separation direction);

[0025] Figure 4 is the overall structure schematic diagram of the child tricycle seat adjusting mechanism of the utility model;

[0026] Figure 5 is the exploded structure schematic diagram of the child tricycle seat adjusting mechanism of the utility model;

[0027] Figure 6 is the internal structure schematic diagram of the child tricycle seat of the utility model connected with the seat adjusting mechanism (the dashed arrow is the seat opening movement direction);

[0028] Figure 7 is the A part enlarged structure schematic diagram of the utility model Figure 6 ;

[0029] Figure 8Is the partial structure schematic diagram of the steering adjusting mechanism after the rear part of the child tricycle frame is opened (the dotted arrow is the frame opening direction);

[0030] Figure 9 Is the partial structure schematic diagram of the steering adjusting mechanism after the front part of the child tricycle frame is opened (the dotted arrow is the frame opening direction);

[0031] Figure 10 Is the exploded structure schematic diagram of the steering adjusting mechanism of the child tricycle;

[0032] Figure 11 Is the partial structure schematic diagram of the front wheel of the child tricycle connected with the pedal unlocking mechanism;

[0033] Figure 12 Is the partial structure schematic diagram of the front wheel after being opened (the dotted arrow is the front wheel opening direction);

[0034] Figure 13 Is the B part enlarged structure schematic diagram of the utility model; Figure 12

[0035] Figure 14 Is the partial structure schematic diagram of the bottom pipe of the child tricycle connected with the handlebar assembly after being separated;

[0036] Figure 15 Is the partial structure schematic diagram of the bottom pipe of the child tricycle connected with the handlebar assembly after being separated from another perspective;

[0037] Figure 16 Is the overall structure schematic diagram of the clutch mechanism of the child tricycle;

[0038] Figure 17 Is the C part enlarged structure schematic diagram of the utility model; Figure 16

[0039] Figure 18 Is the exploded structure schematic diagram of the clutch mechanism of the child tricycle;

[0040] Figure 19 Is the overall structure schematic diagram of the clutch mechanism of the child tricycle when the upper clutch piece is lifted (the dotted arrow is the rotating direction of the lower clutch piece and the moving direction of the upper clutch piece);

[0041] Figure 20 Is the exploded structure schematic diagram of the clutch mechanism of the child tricycle when the upper clutch piece is lifted (the dotted arrow is the moving direction of the upper clutch piece);

[0042] Figure 21 ​​is the exploded structure schematic view of the handlebar assembly of the utility model children's tricycle;

[0043] Figure 22 is the partial structure schematic view of the third pressing switch and the lock block separated from the first movable cavity and the second movable cavity of the handlebar assembly of the utility model children's tricycle;

[0044] Figure 23 is the D part enlarged structure schematic view of the utility model Figure 22 .

[0045] As shown in the figure:

[0046] a1, frame;a2, front fork;a2-1, front connecting groove;a2-2, rotation stop ring table;a2-3, front rotation stop groove;a3, front wheel;a3-1, center installation groove;a3-2, side groove;a4, foot pedal;a4-1, chuck;a4-2, clamping groove;a5, bottom pipe;a5-1, sleeve;a5-2, second guide groove;a5-3, installation groove;a5-4, first movable cavity;a6, seat;a6-1, upper matching cavity;a6-2, positioning groove;a7, leg support;a8, rear wheel;a9, push rod;1, handlebar assembly;101, handlebar rod;102, handlebar seat;102a, second movable cavity;102b, third movable cavity;103, lock tongue;104, third pressing switch;105, sliding switch;106, lock block;107, third spring;108, fourth spring;2, seat adjusting mechanism;201, base;201a, lower matching cavity;201b, outer switch groove;201c, first guide block;202, rotary table;202a, inner switch groove;202b, first guide groove;203, first pressing switch;203a, positioning block;203b, first contact block;204, second pressing switch;204a, second contact block;205, first spring;206, second spring;3, steering adjusting mechanism;301, front linkage;301a, upper shaft body;301b, lower shaft body;301c, front insertion hole;301d, front rotation stop block;302, rear linkage;302a, rear insertion hole;302b, rear connecting groove;302c, rear rotation stop groove;303, transmission member;303a, transmission groove;303b, transmission rod;303c, rear rotation stop block;304, hard drawn wire;4, pedal unlocking mechanism;401, knob switch;402, side shaft;402a, tab;5, clutch mechanism;501, support seat;501a, lock groove;501b, center support rod;502, insertion sleeve;502a, limiting groove;503, lower clutch member;503a, clutch block;503b, lower inclined surface section;503c, inner sliding passage;504, upper clutch member;504a, clutch groove;504b, upper inclined surface section;504c, insertion pin;504d, second guide block;505, toggle switch. DETAILED DESCRIPTION

[0047] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0048] In the description of the utility model, it needs to explain, the term "upper", "lower", "left", "right", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or is the orientation or position relation of the utility model product when using the usual placement, just is for the convenience of simplifying the description, and is not indicate or imply that the orientation is the specific orientation and specific orientation structure and operation that must have, therefore cannot be understood as the limitation to the utility model.

[0049] As Figures 1 to 7As shown, the baby tricycle, which comprises a frame a1, a front fork a2, a front wheel a3, a foot pedal a4, a bottom pipe a5, a handlebar assembly 1, a seat a5-6, a leg support a7, a rear wheel a8 and a push rod a9, in line with the conventional baby tricycle, the front fork a2 is located at the bottom of the front side of the frame a1, the bottom pipe a5 is located at the top of the front side of the frame a1, the handlebar assembly 1 is provided on the bottom pipe a5, the front wheel a3 is connected with the front fork a2, the seat a5-6 is located on the frame a1, the leg support a7 and the rear wheel a8 have two groups, the two groups of leg supports a7 are symmetrically arranged on the left and right directions of the rear side of the frame a1, the rear wheel a8 is connected with the leg support a7, the push rod a9 is arranged on the rear side of the frame a1, and the seat a5-6 adjusting mechanism, the steering adjusting mechanism 3, the pedal unlocking mechanism 4 and the clutch mechanism 5 are further provided, wherein the seat a5-6 adjusting mechanism comprises a base 201, a turntable 202, a first press switch 203 and a second press switch 204, the base 201 is arranged on the frame a1, a lower matching cavity 201a is formed at the bottom of the base 201, which makes the overall shape of the base 201 a tube, an upper matching cavity a6-1 is formed at the top of the seat a5-6, the upper matching cavity a6-1 is opposite to the lower matching cavity 201a, the turntable 202 is installed in the lower matching cavity 201a and is rotatably connected with the upper matching cavity a6-1 at the top, so as to allow the seat a5-6 to rotate around the turntable 202 as the rotating shaft to adjust the angle of orientation, the first press switch 203 and the second press switch 204 are arranged on the circumferential wall of the turntable 202 and extend to the outside space through the circumferential wall of the base 201, so that the hands of parents can touch and control, and at this time, the first press switch 203 and the second press switch 204 can also provide two-point limiting for the turntable 202, so that the turntable 202 can stably keep the base 201 fixed and avoid dislocation, it can be understood that the first press switch 203 and the second press switch 204 belong to press switches, when the seat a5-6 needs to be disassembled, the parents press the first press switch 203 and the second press switch 204 at the same time, so that the first press switch 203 and the second press switch 204 are retracted at the same time until they are separated from the base 201, which can release the limiting of the base 201, and then the turntable 202 and the seat a5-6 can be removed from the base 201 by plugging and unplugging, and the corresponding installation can be completed by inserting the turntable 202 into the lower matching cavity 201a of the base 201 and ensuring that the first press switch 203 and the second press switch 204 can again penetrate the circumferential wall of the base 201 and enter the outside space, the disassembly and assembly process of the whole seat a5-6 can save a lot of time, so as to realize quick disassembly and assembly;

[0050] The side wall of the upper matching cavity a6-1 is provided with a positioning groove a6-2, the side wall of the first pressing switch 203 is formed with a positioning block 203a, the positioning block 203a is inserted and matched with any one of the positioning grooves a6-2, the insertion and matching is a simple straight insertion type matching, in the matching state, the outer wall of the positioning block 203a is in abutment with the inner wall of the positioning groove a6-2, so as to limit the rotation of the seat a5-6, the seat a5-6 is fixed, so as to keep the adjusted orientation angle, when the parent needs to adjust the orientation angle of the seat a5-6, the first pressing switch 203 is pressed to retreat in the internal direction, the positioning block 203a will retreat synchronously and be separated from the matching with the positioning groove a6-2, then the parent can rotate the seat a5-6 according to the need to adjust the orientation angle, when the child rides by the push rod a9, the angle of the seat a5-6 can be adjusted to avoid the child directly facing the wind, so as to reduce the risk of the child catching a cold, and also can prevent the child from lowering the head or closing the eyes due to the influence of the wind, avoid affecting the sight, at the same time, the parent can observe the state of the child at any time during the riding, even if the child has an abnormal condition, the abnormal condition can also be found in time, so as to better adapt to different riding modes, it is necessary to mention that the number of the positioning grooves a6-2 in the utility model is two, and the two positioning grooves a6-2 are located on the same straight line, so as to allow the seat a5-6 to rotate 180° for forward and reverse orientation adjustment, when the adjustment is completed, the positioning block 203a can still be correctly inserted and matched with the positioning groove a6-2 to fix the seat a5-6;

[0051] In addition, the steering adjusting mechanism 3 is arranged in the frame a1 and is connected with the push rod a9 and the front fork a2, the steering adjusting mechanism 3 enables the parent to directly control the rotation of the front fork a2 through the push rod a9, so as to adjust the rolling direction of the front wheel a3, and then controls the movement of the vehicle when the child does not master the riding skill, the pedal unlocking mechanism 4 is arranged between the pedal and the front wheel a3, the pedal unlocking mechanism 4 can unlock the pedal, prevents the pedal from rotating when the child does not ride actively, the handlebar assembly 1 is arranged at the top of the bottom pipe a5, and the clutch mechanism 5 is arranged in the bottom pipe a5 and is connected with the handlebar assembly 1 and the front fork a2.

[0052] As Figures 4 to 7As shown, the joint mechanism further comprises a first spring 205 and a second spring 206, two groups of inner switch grooves 202aa are formed on the circumferential wall of the rotating table 202, the first pressing switch 203 and the second pressing switch 204 are respectively installed in the two inner switch grooves 202aa, the first pressing switch 203 can move back and forth along the inner switch groove 202aa, similarly, the second pressing switch 204 can move back and forth along the inner switch groove 202aa, the first spring 205 and the second spring 206 are respectively arranged in the two inner switch grooves 202aa, the first spring 205 and the second spring 206 respectively abut against the first pressing switch 203 and the second pressing switch 204, when the first pressing switch 203 and the second pressing switch 204 are pressed and moved towards the inner direction of the inner switch groove 202aa, the first spring 205 and the second spring 206 will be compressed, when the pressing force is removed, the first spring 205 and the second spring 206 can restore the deformation and automatically reset the first pressing switch 203 and the second pressing switch 204 respectively, at this time, the positioning block 203a will also be embedded in the positioning groove a6-2, the outer switch groove 201b corresponding to the inner switch groove 202aa is formed on the circumferential wall of the base 201, the bottom of the first pressing switch 203 is formed with a first touch block 203b, the bottom of the second pressing switch 204 is formed with a second touch block 204a, the first touch block 203b and the second touch block 204a both extend outward through the outer switch groove 201b, the first touch block 203b and the second touch block 204a are used for the parent's hand to contact to directly press the first pressing switch 203 and the second pressing switch 204, it needs to be mentioned that the height of the inner switch groove 202aa where the first pressing switch 203 is located in the utility model is greater than the corresponding outer switch groove 201b, which makes the positioning block 203a of the first pressing switch 203 can directly pass through the inner switch groove 202aa and be inserted and matched with the positioning groove a6-2.

[0053] As shown in the figure, Figure 5 As shown, the inner wall of 201a is formed with a first guide block 201c, and the outer wall of the rotating table 202 is correspondingly formed with a first guide groove 202b, the first guide block 201c and the first guide groove 202b are dynamically matched, based on the above setting, when the seat a5-6 needs to be disassembled, the cooperation of the first guide block 201c and the first guide groove 202b can ensure that the rotating table 202 moves along a straight line, thereby reducing the disassembly difficulty, and when the seat a5-6 is installed, the rotating table 202 can be quickly centered by aligning the first guide groove 202b and the first guide block 201c, ensuring that the first pressing switch 203 and the second pressing switch 204 can correctly extend through the outer switch groove 201b of the base 201 to the external space, thereby further improving the installation efficiency.

[0054] As shown in the figure, Figures 8 to 10As shown, the front linkage 301, the rear linkage 302, the transmission member 303 and the hard wire 304 are shown, wherein the upper and lower ends of the front linkage 301 are respectively formed with an upper shaft body 301a and a lower shaft body 301b, the upper shaft body 301a is connected with the clutch mechanism 5, the lower shaft body 301b is connected with the front fork a2, the top of the transmission member 303 is connected with the push rod a9, and the bottom is connected with the rear linkage 302, so that the transmission member 303 can be driven by the push rod a9, and the rear linkage 302 is driven to rotate by the transmission member 303, the hard wire 304 penetrates in the frame a1, and the number of the hard wire 304 has two, the front linkage 301 and the rear linkage 302 are respectively provided with the same number of front insertion holes 301c and rear insertion holes 301c as the hard wire 304, the front ends of the two hard wires 304 are inserted into the front insertion holes 301c, and the rear ends are in sliding fit with the rear insertion holes 301c, when the parents need to control the riding direction of the vehicle, the transmission member 303 can be driven by rotating the push rod a9, the rear linkage 302 is synchronously rotated by the transmission member 303, when the rear linkage 302 rotates, the position of the rear insertion hole 301c will change, at this time the side wall of the rear insertion hole 301c will push the hard wire 304 to swing, the internal space of the frame a1 will provide sufficient activity space for the hard wire 304, when the hard wire 304 swings, the front end drives the front linkage 301 to rotate, so that the front linkage 301 can drive the front fork a2 and the connected front wheel a3 to rotate, so as to change the moving direction of the vehicle, since the hard wire 304 has high strength, hardness and wear resistance, when it is frequently pressed by the rear linkage 302 and the front linkage 301, the degree of deformation can be reduced, so as to reduce the virtual position generated by the deformation, and ensure the effectiveness of the steering adjusting mechanism 3.

[0055] As Figures 8 to 10As shown, the front fork a2 is provided with a front connecting groove a2-1, the upper shaft body 301a is inserted into the front connecting groove a2-1, the circumferential wall of the lower shaft body 301b of the front linkage 301 is formed with two front rotation stopping blocks 301d, the circumferential direction of the front connecting groove a2-1 is formed with a rotation stopping ring table a2-2, the rotation stopping ring table a2-2 is provided with a front rotation stopping groove a2-3 along the height direction, the front rotation stopping groove a2-3 corresponds to the front rotation stopping block 301d, the front rotation stopping block 301d is inserted into the front rotation stopping groove a2-3, so that the outer wall of the front rotation stopping block 301d and the inner wall of the front rotation stopping groove a2-3 are matched with each other, when the front linkage 301 rotates, the lower shaft body 301b can smoothly drive the front fork a2 to rotate, the top of the transmission member 303 is provided with a transmission groove 303a, the push rod a9 is inserted into the transmission groove 303a, and the matching surface between the push rod a9 and the transmission groove 303a is non-circular, so that when the push rod a9 rotates, the power can be transmitted to the transmission member 303 to make it rotate, the bottom of the transmission member 303 is formed with a transmission rod 303b, the upper part of the rear linkage 302 is provided with a rear connecting groove 302b, the transmission rod 303b is inserted into the rear connecting groove 302b, the outer wall of the transmission rod 303b is formed with a rear rotation stopping block 303c, the inner wall of the rear connecting groove 302b is provided with a rear rotation stopping groove 302c, the rear rotation stopping block 303c is inserted into the rear rotation stopping groove 302c, and the number of the rear rotation stopping block 303c and the rear rotation stopping groove 302c is also two, in the inserted and matched state, the outer wall of the rear rotation stopping block 303c and the inner wall of the rear rotation stopping groove 302c are matched with each other, so that the transmission member 303 can smoothly drive the rear linkage 302 to rotate.

[0056] As Figures 11 to 13As shown, the knob switch 401 and the side shaft 402, the front wheel a3 is provided with a center installation groove a3-1 and a side groove a3-2, the center installation groove a3-1 is communicated with the side groove a3-2, the pedal is rotatably connected in the center installation groove a3-1, the side shaft 402 is inserted in the side groove a3-2, the knob switch 401 is connected with the side shaft 402, the chuck a4-1 is formed on the pedal a4, the chuck a4-1 is provided with a clamping groove a4-2, the side shaft 402 is formed with a tab 402a, the tab 402a is inserted into the clamping groove a4-2, at this time the pedal a4 is locked by the tab 402a, when the child pedals the pedal a4 will drive the front wheel a3 to roll synchronously, when in order to prevent the child who does not master the riding skills from moving the vehicle by mistake, the pedal a4 needs to be unlocked, the pedal a4 can be unlocked by rotating the knob switch 401 to drive the side shaft 402 to rotate, at this time the side shaft 402 will drive the tab 402a to apply force to the inner wall of the clamping groove a4-2, so that the chuck a4-1 and the pedal a4 rotate a certain angle, until the tab 402a is separated from the clamping groove a4-2, at this time the pedal a4 will enter the idling mode, even if the child pedals the pedal a4, the front wheel a3 cannot be driven to roll, thereby improving the safety of use.

[0057] As Figures 14 to 20As shown, the seat 501, the bushing 502, the lower clutch 503, the upper clutch 504 and the toggle switch 505, the support seat 501 is fixedly connected with the front fork a2, the bottom tube a5 is rotatably connected to the top of the support seat 501, the bottom tube a5 is controlled to rotate by the handlebar assembly 1, in this state, when the child rotates the handlebar assembly 1, the support seat 501 and the front fork a2 fixedly connected with the support seat 501 cannot be directly rotated, and the rolling direction of the front wheel a3 cannot be changed accordingly, so that the child who learns to ride can smoothly control the riding direction, reduce the occurrence of accidents, and avoid the problem of steering difficulty or even vehicle out of control when the parent needs to control the riding direction, further improve the riding safety, the toggle switch 505 is arranged on the outer wall of the bottom tube a5, the bushing 502, the lower clutch 503 and the upper clutch 504 are sequentially arranged between the support seat 501 and the bottom tube a5, the upper clutch 504 and the lower clutch 503 can rotate relative to each other, and the upper clutch 504 can move up and down along the inner cavity of the bottom tube a5, the lower clutch 503 is connected with the toggle switch 505, the lower clutch 503 is driven by the toggle switch 505 to rotate relative to the upper clutch 504, and drives the upper clutch 504 to move up and down in the bottom tube a5, the top of the lower clutch 503 is formed with a clutch block 503a, the bottom of the upper clutch 504 is correspondingly provided with a clutch groove 504a, the clutch block 503a is embedded in the clutch groove 504a, the outer wall of the clutch block 503a has a lower inclined section 503b, and the inner wall of the clutch groove 504a is correspondingly formed with an upper inclined section 504b, in the utility model, the shape of the clutch groove 504a matches the clutch block 503a, so that the inclination of the lower inclined section 503b is consistent with the upper inclined section 504b, so that in the embedded state, the lower inclined section 503b can be abutted with the upper inclined section 504b, the bottom of the upper clutch 504 is formed with a latch 504c, the lower clutch 503, the bushing 502 and the support seat 501 are respectively correspondingly provided with an inner sliding channel 503c, a limiting groove 502a and a lock slot 501a, the latch 504c is slidably fitted in the inner sliding channel 503c and is inserted in the limiting groove 502a and the lock slot 501a, so that the bottom tube a5 and the support seat 501 are locked, forming a fixed connection, at this time, if the child adjusts the direction of the handlebar assembly 1, the direction change of the handlebar assembly 1 can be transmitted to the support seat 501 and the front fork a2 through the bottom tube a5, so as to change the rolling direction of the front wheel a3, when the lower clutch 503 is controlled to rotate by the toggle switch 505, the lower inclined section 503b and the upper inclined section 504b slide relative to each other and form a guide, so that the height of the upper clutch 504 and the latch 504c is lifted or lowered to the original position, when the upper clutch 504 moves upward, the latch 504c will be separated from the lock slot 501a, so as to release the locking state of the bottom tube a5 and the support seat 501, avoiding the linkage of the handlebar assembly 1 and the front wheel a3, the inner sliding channel 503c limits the maximum rotation angle of the lower clutch 503, so as to avoid over-rotation,The limiting groove 502a only allows the bolt 504c and the integrated upper clutch 504 to move up and down, thereby effectively limiting the rotation of the bolt 504c and the upper clutch 504. In addition, when the bottom tube a5 switches between rotating connection and fixed connection with the support seat 501, only the upper clutch 504 moves up and down inside the bottom tube a5, and the height of the bottom tube a5 and the connected handlebar assembly 1 remains constant. Therefore, even for children of low age, there is no need to lean forward or stretch the arms to hold the handlebar, so that the child can maintain the correct riding posture while riding, significantly improving comfort and balance in the case of long-time riding.

[0058] As shown in Figures 14 to 20 The bottom tube a5 is internally formed with a sleeve a5-1, the top of the support seat 501 is formed with a central support rod 501b, the bottom tube a5 is rotatably connected to the support seat 501 by sleeving the sleeve a5-1 outside the central support rod 501b, the bushing 502, the lower clutch 503 and the upper clutch 504 are all sleeved outside the sleeve a5-1, the inner wall of the bottom tube a5 is provided with a second guide groove a5-2, the outer wall of the upper clutch 504 is correspondingly formed with a second guide block 504d, the second guide block 504d is slidingly fitted in the second guide groove a5-2. In this way, the sleeve a5-1 cooperates with the second guide block 504d, the second guide groove a5-2 and the limiting groove 502a of the bushing 502 to more effectively limit the movement direction of the upper clutch 504, while synchronously limiting the lower clutch 503 and the bushing 502 to ensure their relative positions, thereby accurately inserting or separating the lock groove 501a when the bolt 504c moves up and down with the upper clutch 504.

[0059] As shown in Figures 21 to 23As shown, the handlebar assembly 1 comprises a handlebar stem 101, a handlebar seat 102, a lock tongue 103, a third press switch 104, a sliding switch 105 and a lock block 106, wherein the top of the bottom pipe a5 is provided with a mounting groove a5-3, the handlebar seat 102 is hinged in the mounting groove a5-3, the handlebar stem 101 is arranged on the top of the handlebar seat 102, the handlebar stem 101 can be switched between the folded and unfolded states through the rotation of the handlebar seat 102, the side wall of the mounting groove a5-3 is provided with a first movable cavity a5-4, the handlebar seat 102 is provided with a second movable cavity 102a correspondingly, the first movable cavity a5-4 and the second movable cavity 102a are communicated with each other, the third press switch 104 is arranged in the first movable cavity a5-4, the third press switch 104 belongs to a press switch and can slide in the first movable cavity a5-4 when subjected to a pressing force, the lock block 106 is slidably matched with the first movable cavity a5-4 and the second movable cavity 102a and abuts against the third press switch 104, the third press switch 104 will drive the lock block 106 to move in the first movable cavity a5-4 and the second movable cavity 102a when subjected to a pressing force, the lock block 106 can completely enter the second movable cavity 102a by moving away from the cooperation with the first movable cavity a5-4, the cooperation positions of the lock block 106 with the first movable cavity a5-4 and the second movable cavity 102a are all non-circular, so that the lock block 106 can only move in a straight line and cannot rotate, so that the handlebar seat 102 cannot rotate when the lock block 106 cooperates with the first movable cavity a5-4 and the second movable cavity 102a, so that the handlebar stem 101 and the handlebar seat 102 can be stably kept in the unfolded or folded state, the depth of the second movable cavity 102a matches the lock block 106, so that the lock block 106 can completely move into the second movable cavity 102a and move away from the first movable cavity a5-4, at this time, the lock block 106 releases the limitation on the handlebar seat 102, so that the handlebar seat 102 can smoothly drive the handlebar stem 101 to fold or unfold, the handlebar seat 102 is further provided with a third movable cavity 102b, the third movable cavity 102b is through the second movable cavity 102a, the lock tongue 103 is slidably matched in the third movable cavity 102b and enters the second movable cavity 102a to abut against the lock block 106, the sliding switch 105 is sleeved on the handlebar stem 101 and connected with the lock tongue 103, the lock tongue 103 can be driven by the sliding switch 105 to move up and down in the third movable cavity 102b and move away from the second movable cavity 102a, obviously, when the lock tongue 103 is inside the second movable cavity 102a, the lock block 106 cannot completely enter the second movable cavity 102a and still cooperates with the first movable cavity a5-4, that is, the lock block 106 is a lock for the handlebar assembly 1 and the lock tongue 103 is a second lock, the folding of the handlebar seat 102 and the handlebar stem 101 needs the lock block 106 and the lock tongue 103 to be unlocked at the same time, so that the handlebar assembly 1 can be effectively prevented from being mistakenly folded or unfolded.

[0060] As Figure 21 shown, the handle assembly 1 further comprises a third spring 107 and a fourth spring 108, the third spring 107 is arranged in the second movable cavity 102a and abuts against the lock block 106, and the fourth spring is arranged in the third movable cavity 102b and abuts against the lock tongue 103, when the lock block 106 moves towards the inside of the second movable cavity 102a, the third spring 107 will be compressed, and the fourth spring 108 will be compressed when the lock tongue 103 is separated from the second movable cavity 102a, after the press switch and the sliding switch 105 are released, the third spring 107 and the fourth spring 108 restore deformation, and under the action of the elastic force, the lock block 106 and the lock tongue 103 can be automatically locked.

[0061] In combination Figures 1 to 23The seat a5-6 of the utility model infant tricycle can be quickly disassembled and adjusted in front and back direction angle, when disassembly is needed, the parents press the first pressing switch 203 and the second pressing switch 204 on the seat a5-6 adjusting mechanism first pressing switch 203 and the second pressing switch 204 simultaneously, make the first pressing switch 203 and the second pressing switch 204 simultaneously return to the inner switch groove 202aa of the rotating table 202, until from the outer switch groove 201b of the base 201, so that the limiting of the base 201 can be removed, then the first guide block 201c is moved along the first guide groove 202b by the plug-in mode, the rotating table 202 and the seat a5-6 are removed from the base 201, and the installation is completed, when corresponding installation, the first guide groove 202b of the rotating table 202 is aligned with the first guide block 201c in the lower matching cavity 201a inner wall of the base 201, then is inserted into the lower matching cavity 201a of the base 201, after insertion, the first spring 205 and the second spring 206 move the first pressing switch 203 and the second pressing switch 204 respectively, the first pressing switch 203 and the second pressing switch 204 are inserted into the outer switch groove 201b to the external space again, and the installation is completed, when the parents need to adjust the direction angle of the seat a5-6, the first pressing switch 203 is pressed to make the first pressing switch 203 return to the inner switch groove 202aa, the positioning block 203a is returned synchronously and is separated from the matching of the positioning groove a6-2, then the parents can rotate the seat a5-6 according to the need to adjust the direction angle, when the adjustment is completed, the first spring 205 can drive the first pressing switch 203 to reset automatically, the positioning block 203a is automatically embedded in the positioning groove a6-2, so that the fixation of the seat a5-6 is kept, when the parents need to control the riding direction of the vehicle, the transmission member 303 of the steering adjusting mechanism 3 is rotated by rotating the push rod a9, the rear linkage 302 is synchronously rotated by the transmission member 303, when the rear linkage 302 rotates, the position of the rear insertion hole 301c will change, at this time, the sidewall of the rear insertion hole 301c will push the hard drawn wire 304 to swing, the internal space of the frame a1 will provide sufficient activity space for the hard drawn wire 304, when the hard drawn wire 304 swings, the front end drives the front linkage 301 to rotate, so that the front linkage 301 can drive the front fork a2 and the connected front wheel a3 to rotate, so that the moving direction of the vehicle is changed, when the children who do not master the riding skills touch the pedal a4 by mistake, the knob switch 401 of the pedal unlocking mechanism 4 is rotated to drive the side shaft 402 to rotate, at this time, the side shaft 402 drives the tab 402a to apply force to the inner wall of the clamping groove a4-2, the chuck a4-1 and the pedal a4 are rotated by a certain angle, until the tab 402a is separated from the clamping groove a4-2, at this time, the pedal a4 enters the idling mode, even if the children step on the pedal a4, the front wheel a3 cannot be rolled, in addition, the parents can also switch the bottom pipe a5 connected with the handlebar assembly 1 and the support seat 501 between the rotating and locking states through the clutch mechanism 5,The parent only needs to move the control knob switch 505 to drive the lower clutch 503 in the bottom pipe a5 to rotate, the lower inclined surface section 503b of the lower clutch block 503a of the lower clutch 503 and the lower inclined surface section 503b of the clutch groove 504a of the upper clutch 504 can form a guide, so that the height of the upper clutch 504 and the integrated latch 504c is lifted, at this time the latch 504c can release the cooperation with the lock groove 501a of the support seat 501, the bottom pipe a5 correspondingly releases the locking with the support seat 501, when the handlebar assembly 1 drives the bottom pipe a5 to rotate, the direction of the front wheel a3 will not be changed, when the knob switch 505 drives the lower clutch 503 to rotate back to the original position, the latch 504c can be inserted into the lock groove 501a of the support seat 501 again, at this time the child can transmit the rotation to the support seat 501 through the handlebar assembly 1, so as to drive the front wheel a3 to rotate, realize the autonomous adjustment of the riding direction, the handlebar assembly 1 allows switching in the unfolded and folded states, the parent first needs to pull the sliding switch 105, the sliding switch 105 drives the lock tongue 103 to be separated from the second movable cavity 102a of the handlebar seat 102, at this time the fourth spring 108 is compressed, and the force on the press switch can be continued, the press switch drives the lock block 106 to be completely moved into the second movable cavity 102a, at this time the third spring 107 is compressed, the lock block 106 releases the rotation of the handlebar seat 102, the handlebar seat 102 can drive the handlebar rod 101 to be folded or unfolded, after folding or unfolding is completed, the third spring 107 and the fourth spring 108 can respectively drive the lock block 106 and the lock tongue 103 to be automatically locked.

[0062] The above embodiments and descriptions in the specification are only to illustrate the principles and the best embodiments of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A children's tricycle with a steerable and quick-release seat, comprising a frame (a1), a front fork (a2), a front wheel (a3), pedals (a4), a bottom tube (a5), a handlebar assembly (1), a seat (a6), a leg support (a7), a rear wheel (a8), and a push rod (a9), characterized in that, It also includes a seat adjustment mechanism (2), a steering adjustment mechanism (3), a pedal unlocking mechanism (4), and a clutch mechanism (5). The seat adjustment mechanism (2) includes a base (201), a turntable (202), a first push switch (203), and a second push switch (204). The base (201) is mounted on the frame (a1). A lower mating cavity (201a) is opened at the top of the base (201). An upper mating cavity (a6-1) is correspondingly opened at the bottom of the seat (a6). The turntable (202) is installed in the lower mating cavity (201a) and its top is rotatably connected to the upper mating cavity (a6-1). The first push switch (203) and the second push switch (204) are located on the turntable (201a). 2) On the periphery of the base (201), and all extend outward through the periphery of the base (201), two positioning grooves (a6-2) are opened on the side wall of the upper mating cavity (a6-1), and a positioning block (203a) is formed on the side wall of the first push switch (203). The positioning block (203a) is embedded in any positioning groove (a6-2). The steering adjustment mechanism (3) is located in the frame (a1) and connected to the push rod (a9) and the front fork (a2). The pedal unlocking mechanism (4) is located between the pedal and the front wheel (a3). The handlebar assembly (1) is located on the top of the bottom tube (a5). The clutch mechanism (5) is located inside the bottom tube (a5) and connected to the handlebar assembly (1) and the front fork (a2).

2. A child tricycle with a steerable and quick-release seat according to claim 1, characterized in that, The seat adjustment mechanism (2) further includes a first spring (205) and a second spring (206). Two sets of internal switch slots (202a) are provided on the peripheral sidewall of the turntable (202). The first push switch (203) and the second push switch (204) are respectively installed in the two internal switch slots (202a), and the first spring (205) and the second spring (206) are respectively located in the two internal switch slots (202a). The first spring (205) and the second spring (206) are respectively connected to the first push switch (203) and the second push switch (204). 204) Abutting each other, the positioning block (203a) passes through the inner switch groove (202a) and is inserted into the positioning groove (a6-2). The peripheral side wall of the base (201) is provided with an outer switch groove (201b) corresponding to the inner switch groove (202a). The bottom of the first push switch (203) is formed with a first contact block (203b), and the bottom of the second push switch (204) is formed with a second contact block (204a). The first contact block (203b) and the second contact block (204a) both extend outward through the outer switch groove (201b).

3. A child tricycle with a steerable and quick-release seat according to claim 2, characterized in that, A first guide block (201c) is formed on the inner wall of the lower mating cavity (201a), and a first guide groove (202b) is formed on the outer wall of the turntable (202). The first guide block (201c) and the first guide groove (202b) are in sliding fit.

4. A child tricycle with a steerable and quick-release seat according to any one of claims 1 to 3, characterized in that, The steering adjustment mechanism (3) includes a front linkage (301), a rear linkage (302), a transmission component (303), and a hardened wire (304). The top and bottom of the front linkage (301) are respectively formed with an upper shaft (301a) and a lower shaft (301b). The upper shaft (301a) is connected to the clutch mechanism (5), and the lower shaft (301b) is connected to the front fork (a2). The top of the transmission component (303) is connected to the push rod (a2). 9) Connected, and the bottom is connected to the rear linkage (302). The hard wire (304) runs through the frame (a1) and has two. The front linkage (301) and the rear linkage (302) are respectively provided with the same number of front insertion holes (301c) and rear insertion holes (302a) as the hard wire (304). The front end of the hard wire (304) is inserted into the front insertion hole (301c) and the rear end slides into the rear insertion hole (302a).

5. A child tricycle with a steerable and quick-release seat according to claim 4, characterized in that, The front fork (a2) has a front connecting groove (a2-1), the upper axle (301a) is inserted into the front connecting groove (a2-1), the lower axle (301b) has a front anti-rotation block (301d) formed on its peripheral sidewall, the front connecting groove (a2-1) has an anti-rotation ring platform (a2-2) formed in the circumferential direction, the anti-rotation ring platform (a2-2) has a front anti-rotation groove (a2-3), the front anti-rotation block (301d) is inserted into the front anti-rotation groove (a2-3), the top of the transmission component (303) has a transmission groove (303a), and the push rod (a9) is inserted into the transmission groove (a9). The moving groove (303a) and the mating surface between it and the transmission groove (303a) are non-circular. A transmission rod (303b) is formed at the bottom of the transmission member (303). A rear connecting groove (302b) is provided on the rear linkage member (302). The transmission rod (303b) is inserted into the rear connecting groove (302b). A rear anti-rotation block (303c) is formed on the peripheral side wall of the transmission rod (303b). A rear anti-rotation groove (302c) is provided on the inner wall of the rear connecting groove (302b). The rear anti-rotation block (303c) is inserted into the rear anti-rotation groove (302c).

6. A child tricycle with a steerable and quick-release seat according to claim 5, characterized in that, The pedal unlocking mechanism (4) includes a rotary switch (401) and a side shaft (402). A central mounting groove (a3-1) and a side groove (a3-2) are provided on the front wheel (a3). The central mounting groove (a3-1) and the side groove (a3-2) are connected. The pedal is rotatably connected in the central mounting groove (a3-1). The side shaft (402) is inserted in the side groove (a3-2). The rotary switch (401) is connected to the side shaft (402). A chuck (a4-1) is formed on the foot pedal (a4). A slot (a4-2) is provided on the chuck (a4-1). A paddle (402a) is formed on the side shaft (402). The paddle (402a) is inserted in the slot (a4-2).

7. A child tricycle with a steerable and quick-release seat according to any one of claims 1, 2, 3, 5 or 6, characterized in that, The clutch mechanism (5) includes a support base (501), a sleeve (502), a lower clutch component (503), an upper clutch component (504), and a toggle switch (505). The support base (501) is connected to the front fork (a2), and the bottom tube (a5) is rotatably connected to the top of the support base (501). The toggle switch (505) is located on the outer wall of the bottom tube (a5). The sleeve (502), the lower clutch component (503), and the upper clutch component (504) are sequentially located between the support base (501) and the bottom tube (a5). The lower clutch component (503) is connected to the toggle switch (505). A clutch block (503a) is formed on the top of the lower clutch component (503), and a clutch groove (504a) is correspondingly provided on the bottom of the upper clutch component (504). The clutch block (503a) is embedded in the clutch groove (504a). The outer wall of the clutch block (503a) has a lower inclined section (503b), and the inner wall of the clutch groove (504a) has a corresponding upper inclined section (504b). The lower inclined section (503b) abuts against the upper inclined section (504b). The bottom of the upper clutch component (504) has a pin (504c). The lower clutch component (503), the sleeve (502), and the support base (501) are respectively provided with an inner sliding channel (503c), a limiting groove (502a), and a locking groove (501a). The pin (504c) is slidably engaged in the inner sliding channel (503c) and inserted into the limiting groove (502a) and the locking groove (501a).

8. A child tricycle with a steerable and quick-release seat according to claim 7, characterized in that, The bottom tube (a5) has a sleeve (a5-1) inside, and a central support rod (501b) is formed on the top of the support base (501). The bottom tube (a5) is sleeved on the outside of the central support rod (501b) through the sleeve (a5-1) and rotatably connected to the support base (501). The insert (502), lower clutch (503) and upper clutch (504) are all sleeved on the outside of the sleeve (a5-1). A second guide groove (a5-2) is opened on the inner wall of the bottom tube (a5), and a second guide block (504d) is correspondingly formed on the outer wall of the upper clutch (504). The second guide block (504d) is slidably engaged in the second guide groove (a5-2).

9. A child tricycle with a steerable and quick-release seat according to any one of claims 1, 2, 3, 5, 6 or 8, characterized in that, The handlebar assembly (1) includes a handlebar stem (101), a handlebar seat (102), a latch (103), a third push switch (104), a slide switch (105), and a locking block (106). A mounting groove (a5-3) is provided on the top of the base tube (a5). The handlebar seat (102) is hinged in the mounting groove (a5-3). The handlebar stem (101) is located on the top of the handlebar seat (102). A first movable cavity (a5-4) is provided on the side wall of the mounting groove (a5-3). A second movable cavity (102a) is correspondingly provided on the handlebar seat (102). The third push switch (104) is located in the first movable cavity (a5-4). The locking block (106) 106) slides with the first movable cavity (a5-4) and the second movable cavity (102a), and the shape of the mating position is non-circular. The depth of the second movable cavity (102a) matches the locking block (106). The locking block (106) abuts against the third push switch (104). The handlebar seat (102) is also provided with a third movable cavity (102b). The third movable cavity (102b) is connected to the second movable cavity (102a). The locking tongue (103) slides in the third movable cavity (102b) and abuts against the locking block (106). The sliding switch (105) is sleeved on the handlebar (101) and connected to the locking tongue (103).

10. A child tricycle with a steerable and quick-release seat according to claim 9, characterized in that, The handlebar assembly (1) also includes a third spring (107) and a fourth spring (108). The third spring (107) is located in the second movable cavity (102a) and abuts against the locking block (106). The fourth spring is located in the third movable cavity (102b) and abuts against the locking tongue (103).

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