A steering limit mechanism for a children's bicycle

Abstract

The present invention discloses a steering limit mechanism for a children's bicycle, specifically including: a front fork, which has a reinforced outer shell, and a head tube arranged above the front fork. A limit mechanism is fixedly connected inside the head tube, and a clamping mechanism is slidably connected inside the limit mechanism. A down tube is fixedly connected to the rear side of the front fork, and a support mechanism is fixedly connected to the outside of the down tube; a balance plate, which has a stable bottom plate and a fixing rod arranged inside the balance plate. A protection mechanism is fixedly connected to the outside of the fixing rod; the limit mechanism includes a base, a support chassis is rotatably connected inside the base, a clamping disc is fixedly connected above the support chassis, a first slideway is opened inside the limit mechanism, and the base is fixedly connected inside the head tube; the present invention relates to the technical field of children's bicycles. The steering limit mechanism for the children's bicycle achieves the purpose of improving the use efficiency of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of children's bicycles, and particularly to a steering limit mechanism for children's bicycles. Background Art

[0002] A children's bicycle refers to a bicycle suitable for children aged 4 - 8 years old, with a maximum saddle height of 435 mm - 635 mm, and is ridden by means of a drive mechanism acting on the rear wheel. It has various wheel diameters and various styles with or without balance wheels. A children's bicycle cannot be used for road riding. If the size is too large, when braking, the child cannot firmly hold the handbrake, and thus cannot brake the vehicle. Additionally, the braking force must not be less than 50 N, otherwise the vehicle will not be able to brake, posing a hazard to the child. Some children's bicycles are also equipped with protective wheels, which can keep the rider balanced. A limiting device needs to be set on the bicycle used by children to strengthen the protection of children.

[0003] For the current steering limit mechanism of children's bicycles, it is difficult to control the handlebar angle of a conventional children's bicycle. Since the handlebar is very easy to turn, when a child is riding a bicycle, due to the difficulty in controlling the steering angle and force, the body of the bicycle sways or even falls down. And when the bicycle falls down, it is necessary to protect the body of the bicycle and the child. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a steering limit mechanism for children's bicycles, which specifically includes:

[0005] A front fork, which has a reinforced outer shell and a head tube arranged above the front fork. A limit mechanism is fixedly connected inside the head tube. A clamping mechanism is slidably connected inside the limit mechanism. A down tube is fixedly connected to the rear side of the front fork, and a support mechanism is fixedly connected to the outside of the down tube;

[0006] A balance plate, which has a stable bottom plate and a fixed rod arranged inside the balance plate. A protection mechanism is fixedly connected to the outside of the fixed rod;

[0007] The limit mechanism includes a base. A support chassis is rotatably connected inside the base. A clamping disk is fixedly connected above the support chassis to support the upper rotating plate. A first slideway is opened inside the limit mechanism, and the base is fixedly connected inside the head tube;

[0008] The limit mechanism further includes a second slideway. A first sliding ball is fixedly connected inside the second slideway. An elastic plate is fixedly connected inside the second slideway to block a scraper. A second sliding ball is snap - connected inside the elastic plate. A rubber double - plate is fixedly connected inside the second slideway to block the scraper. A friction strip is fixedly connected to the outside of the rubber double - plate to increase the friction force. The second slideway is opened inside the head tube.

[0009] Preferably, the head tube is fixedly connected above the front fork, the balance plate is fixedly connected below the front fork, a shock-absorbing arc plate is fixedly connected to the outside of the front fork, and a brake assembly is fixedly connected to the inside of the front fork.

[0010] Preferably, the clamping mechanism includes a shock-absorbing shell, a sound-insulating plate is fixedly connected to the outside of the shock-absorbing shell, a rotating plate is snap-fitted inside the clamping disc, the shock-absorbing shell is fixedly connected inside the head tube, and a first slideway is opened inside the shock-absorbing shell.

[0011] Preferably, a scraping plate is fixedly connected to the outside of the rotating plate for controlling the steering angle of the handlebar, an auxiliary plate is fixedly connected to the outside of the rotating plate for maintaining the stability of the rotating plate, a vertical shaft is fixedly connected above the rotating plate, a load-bearing plate is fixedly connected to the outside of the vertical shaft, a clamping hole is opened inside the load-bearing plate, a handlebar is snap-fitted inside the clamping hole, and the auxiliary plate is slidably connected inside the first slideway.

[0012] Preferably, the protection mechanism includes a fixing ring, a clamping plate is fixedly connected to the outside of the fixing ring, a stretching rod is rotatably connected inside the clamping plate, a spring is fixedly connected to the outside of the stretching rod for fixing the stretching rod and driving the stretching rod to return to its original position, the spring is fixedly connected to the outside of the fixing rod, and the fixing ring is fixedly connected to the outside of the fixing rod.

[0013] Preferably, a pressing plate is fixedly connected to the outside of the stretching rod, a pressure ball is fixedly connected above the pressing plate for increasing the pressure from above, and a connecting plate is fixedly connected below the clamping plate.

[0014] Preferably, a hydraulic rod is fixedly connected below the connecting plate, balance rods are respectively fixedly connected to the left and right ends of the hydraulic rod, a bottom plate is fixedly connected below the hydraulic rod, and a suction block is fixedly connected below the bottom plate for fixing to the ground.

[0015] Preferably, the support mechanism includes a reinforcement joint, a rear upper fork is fixedly connected to the outside of the reinforcement joint, a bearing is fixedly connected to the outside of the rear upper fork, and the reinforcement joint is fixedly connected to the outside of the down tube.

[0016] Preferably, a support rod is rotatably connected inside the bearing, the support rod is rotatably connected to a fixing plate below, and a plurality of friction blocks are fixedly connected to the bottom of the fixing plate.

[0017] Preferably, the support mechanism further includes a backrest plate, an electric push plate is fixedly connected inside the backrest plate, a second bearing is fixedly connected to the outside of the electric push plate, and an auxiliary pedal is rotatably connected inside the second bearing for supporting the feet of children.

[0018] The present invention provides a steering limiting mechanism for a children's bicycle, which has the following beneficial effects:

[0019] In the steering limiting mechanism for the children's bicycle, by setting a clamping mechanism, during the steering process of the bicycle, it is very easy to turn the handlebar. If a child cannot control the steering angle and force, it is easy to cause the body of the bicycle to shake continuously. Therefore, during the process of controlling the handlebar, keep it in a vertical state and cooperate with the limiting mechanism. The steering of the handlebar is adjusted according to the steering angle, and during this process, keep the device stable. The purpose of maintaining the stability of the rotating plate and assisting the limiting mechanism to control the movement direction of the handlebar is achieved.

[0020] In the steering limiting mechanism for the children's bicycle, by setting a limiting mechanism, it is difficult to control the angle of the handlebar of a conventional children's bicycle. Since it is very easy to turn the handlebar, when a child is riding a bicycle, due to the difficulty in controlling the steering angle and force, the body of the bicycle shakes or even falls down. Therefore, in the device, limit the steering angle of the handlebar, and by applying different pressures to different angles, prompt the child the correct direction of the handlebar. The purpose of changing the pressure magnitude according to the steering angle and then controlling the direction of the handlebar is achieved.

[0021] In the steering limiting mechanism for the children's bicycle, by setting a protection mechanism, when the handlebar of the bicycle is skewed and the body of the bicycle gradually falls to the left and right sides, at this time, the protection mechanism touches the ground, and under the pressure from above, it presses on the ground to prevent the front of the bicycle from falling to the left and right sides, thereby protecting the child. And by pulling up the protection mechanism and separating the suction block, the protection mechanism can automatically return to its original position. The purpose of supporting the bicycle on the left and right sides of the front part of the body and strengthening the fixation at the bottom is achieved.

[0022] In the steering limiting mechanism for the children's bicycle, by setting a support mechanism, when the rear part of the body of the bicycle is about to fall, the fixing plate rotates and is fixed on the ground to support the rear side of the bicycle. And after the bicycle falls, the auxiliary pedal can be opened to support the child's feet to prevent the pedal from being unstable and causing the child to fall. The purpose of fixing the rear part of the bicycle and being able to support the child is achieved. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the steering limiting mechanism for the children's bicycle of the present invention;

[0024] Figure 2 is a schematic rear structural diagram of the steering limiting mechanism for the children's bicycle of the present invention;

[0025] Figure 3 is a schematic structural diagram of the clamping mechanism of the present invention;

[0026] Figure 4 is a schematic structural diagram of the limiting mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4 is a partial enlarged schematic view of part A in the present invention;

[0028] Figure 6 is a schematic structural view of the protection mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 is a partial enlarged schematic view of part B in the present invention;

[0030] Figure 8 is a schematic structural view of the support mechanism of the present invention.

[0031] In the figure: 1, front fork; 2, head tube; 3, clamping mechanism; 301, shock absorber shell; 302, rotating plate; 303, scraping plate; 304, auxiliary plate; 305, vertical shaft; 306, load-bearing plate; 4, limiting mechanism; 401, base; 402, support chassis; 403, clamping disc; 404, second slideway; 405, first slideway; 406, first sliding ball; 407, elastic plate; 408, second sliding ball; 409, rubber double plate; 5, balance plate; 6, fixed rod; 7, protection mechanism; 701, fixed ring; 702, clamping plate; 703, stretching rod; 704, pressing plate; 705, pressure ball; 706, spring; 707, connecting plate; 708, hydraulic rod; 709, balance rod; 710, bottom plate; 711, suction block; 8, down tube; 9, support mechanism; 901, reinforcement joint; 902, rear upper fork; 903, bearing; 904, support rod; 905, fixing plate; 906, backing plate; 907, electric push plate; 908, auxiliary pedal. Detailed implementation manners

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0033] As Figures 1 - 8 shown, the present invention provides a technical solution: specifically including:

[0034] A front fork 1, the front fork 1 has a reinforced outer shell, and a head tube 2 is arranged above the front fork 1. A limiting mechanism 4 is fixedly connected inside the head tube 2, a clamping mechanism 3 is slidably connected inside the limiting mechanism 4, a down tube 8 is fixedly connected to the rear side of the front fork 1, and a support mechanism 9 is fixedly connected to the outside of the down tube 8.

[0035] A balance board 5, which has a stable bottom plate and a fixing rod 6 arranged inside the balance board 5, and a protection mechanism 7 is fixedly connected to the outside of the fixing rod 6.

[0036] The head tube 2 is fixedly connected above the front fork 1, the balance board 5 is fixedly connected below the front fork 1, a shock-absorbing arc plate is fixedly connected to the outside of the front fork 1, and a brake assembly is fixedly connected to the inside of the front fork 1. It has the advantages of limiting steering and protecting children. When a child uses the bicycle to turn, the handlebar gradually moves inside the limiting mechanism 4 under the control of the clamping mechanism 3 to control the steering force of the handlebar. When the front part of the bicycle sways left and right, the protection mechanism 7 starts to unfold. When the swaying angle is too large, the protection mechanism 7 starts to protect the child on the left or right side. After the protection mechanism 7 is activated, the support mechanism 9 immediately protects the child on the same side as the protection mechanism 7 to prevent the bicycle from falling and causing the child to be injured. When the rear part of the bicycle sways left and right, the support mechanism 9 will be triggered, and then the protection mechanism 7 on the same side as the support mechanism 9 starts to work.

[0037] The limiting mechanism 4 includes a base 401, a support chassis 402 is rotatably connected inside the base 401, a clamping disc 403 is fixedly connected above the support chassis 402, and a first sliding track 405 is opened inside the limiting mechanism 4. The base 401 is fixedly connected inside the head tube 2.

[0038] The limiting mechanism 4 further includes a second sliding track 404, a first sliding ball 406 is fixedly connected inside the second sliding track 404, an elastic plate 407 is fixedly connected inside the second sliding track 404, a second sliding ball 408 is snap-connected inside the elastic plate 407, a rubber double plate 409 is fixedly connected inside the second sliding track 404, a friction strip is fixedly connected to the outside of the rubber double plate 409, and the second sliding track 404 is opened inside the head tube 2. It has the advantage of changing the pressure magnitude according to the steering angle and then controlling the direction of the handlebar. The clamping mechanism 3 is inside the clamping disc 403. When turning the handlebar, the handlebar drives the clamping mechanism 3 to rotate, and then drives the bottom support chassis 402 to rotate inside the base 401. At this time, the upper end of the clamping mechanism 3 slides inside the first sliding track 405, and the lower end of the clamping mechanism 3 slides inside the second sliding track 404.

[0039] When the steering force is small, when the lower end of the clamping mechanism 3 slides in the second sliding track 404, it will squeeze the first sliding ball 406 left and right. The first sliding ball 406 is small and the pressure is small, so the steering is relatively easy at this time. When the steering angle gradually becomes larger, it starts to squeeze the second sliding ball 408, and then squeezes the elastic plate 407 above the second sliding ball 408. At this time, the pressure is large and the steering is more difficult. When the steering angle is too large, it starts to squeeze the rubber double plate 409, and the pressure reaches the maximum value, making the steering difficult.

[0040] The clamping mechanism 3 includes a shock-absorbing housing 301, a sound-insulating plate is fixedly connected to the outside of the shock-absorbing housing 301, a rotating plate 302 is clamped and connected to the inside of the clamping disc 403, the shock-absorbing housing 301 is fixedly connected to the inside of the head tube 2, and a first slideway 405 is opened in the shock-absorbing housing 301.

[0041] A scraping plate 303 is fixedly connected to the outside of the rotating plate 302, an auxiliary plate 304 is fixedly connected to the outside of the rotating plate 302, a vertical shaft 305 is fixedly connected above the rotating plate 302, a bearing plate 306 is fixedly connected to the outside of the vertical shaft 305, a clamping hole is opened in the bearing plate 306, a handlebar is clamped and connected to the inside of the clamping hole, and the auxiliary plate 304 is slidably connected to the inside of the first slideway 405. It has the advantages of maintaining the stability of the rotating plate and assisting the limiting mechanism to control the movement direction of the handlebar. When a child uses the bicycle to turn, the handlebar drives the bearing plate 306 at the bottom to rotate, thereby driving the vertical shaft 305 below to rotate, and the vertical shaft 305 drives the rotating plate 302 at the bottom to rotate. At this time, the auxiliary plate 304 outside the rotating plate 302 slides inside the first slideway 405 to keep the rotating plate 302 rotating smoothly, and the scraping plate 303 outside the rotating plate 302 rotates inside the limiting mechanism 4 and will receive different magnitudes of pressure according to the rotation angle.

[0042] The protection mechanism 7 includes a fixing ring 701, a clamping plate 702 is fixedly connected to the outside of the fixing ring 701, a stretching rod 703 is rotatably connected to the inside of the clamping plate 702, a spring 706 is fixedly connected to the outside of the stretching rod 703, the spring 706 is fixedly connected to the outside of the fixing rod 6, and the fixing ring 701 is fixedly connected to the outside of the fixing rod 6.

[0043] A pressing plate 704 is fixedly connected to the outside of the stretching rod 703, a pressure ball 705 is fixedly connected above the pressing plate 704, and a connecting plate 707 is fixedly connected below the clamping plate 702.

[0044] A hydraulic rod 708 is fixedly connected below the connecting plate 707, balance rods 709 are respectively fixedly connected to the left and right ends of the hydraulic rod 708, a bottom plate 710 is fixedly connected below the hydraulic rod 708, and a suction block 711 is fixedly connected below the bottom plate 710. It has the advantages of supporting the bicycle on the left and right sides of the front part of the vehicle body and strengthening the fixation at the bottom. When the front side of the bicycle body falls to both sides, the stretching rod 703 starts to drive the spring 706 to move outward, the hydraulic rod 708 moves vertically downward, the balance rods 709 on the left and right sides of the hydraulic rod 708 assist the hydraulic rod 708 to fall vertically, and drive the bottom plate 710 below to move downward until the suction block 711 at the bottom is fixed on the ground.

[0045] The pressing plate 704 and the pressure ball 705 provide pressure from above. When the bicycle is in a vertical state, the two are arranged outward naturally to prevent the stretching rod 703 from being scratched. When the bicycle falls down, the suction block 711 is fixed to the ground, and the pressing plate 704 and the pressure ball 705 can squeeze downward from above to strengthen the stability of the bottom.

[0046] The support mechanism 9 includes a reinforcement joint 901. An upper rear fork 902 is fixedly connected to the outside of the reinforcement joint 901. A bearing 903 is fixedly connected to the outside of the upper rear fork 902. The reinforcement joint 901 is fixedly connected to the outside of the down tube 8.

[0047] A support rod 904 is rotatably connected to the inside of the bearing 903. A fixed plate 905 is rotatably connected to the lower part of the support rod 904. A plurality of friction blocks are fixedly connected to the bottom of the fixed plate 905.

[0048] The support mechanism 9 further includes a backrest plate 906. An electric push plate 907 is fixedly connected to the inside of the backrest plate 906. A second bearing is fixedly connected to the outside of the electric push plate 907. An auxiliary pedal 908 is rotatably connected to the inside of the second bearing. It has the advantages of fixing the rear part of the bicycle and being able to support children. When the rear side of the bicycle sways left and right, the fixed plate 905 starts to sway. When the bicycle falls down, the fixed plate 905 is fixed to the ground accordingly. At this time, the electric push plate 907 can be turned on. The electric push plate 907 drives the auxiliary pedal 908 to move forward. The support rod 904 is more stable than the pedal position. At this time, the child can temporarily step on the upper part of the auxiliary pedal 908 to maintain balance.

[0049] Working principle: When a child turns the bicycle, the handlebar gradually moves inside the limiting mechanism 4 under the control of the clamping mechanism 3. When the child turns the bicycle, the handlebar drives the load-bearing plate 306 at the bottom to rotate, and then drives the vertical shaft 305 below to rotate. The vertical shaft 305 drives the rotating plate 302 at the bottom to rotate. At this time, the auxiliary plate 304 outside the rotating plate 302 slides inside the first slideway 405 to keep the rotating plate 302 rotating smoothly. The scraping plate 303 outside the rotating plate 302 rotates inside the limiting mechanism 4. The rotating plate 302 is located inside the clamping disc 403.

[0050] When turning the handlebar, the handlebar drives the rotating plate 302 to rotate, and then drives the support chassis 402 at the bottom to rotate inside the base 401. At this time, the auxiliary plate 304 slides inside the first slideway 405, and the scraping plate 303 slides inside the second slideway 404.

[0051] When the steering force is small, when the scraper 303 slides in the second slideway 404, it will squeeze the first sliding ball 406 left and right. The first sliding ball 406 is small and the pressure is small, so the steering is relatively easy at this time. When the steering angle gradually becomes larger, it begins to squeeze the second sliding ball 408, and then squeezes the elastic plate 407 above the second sliding ball 408. At this time, the pressure is large and the steering is difficult. When the steering angle is too large, it begins to squeeze the rubber double plate 409, the pressure reaches the maximum value, and the steering is difficult.

[0052] When the front part of the bicycle sways left and right, the protection mechanism 7 starts to deploy. When the swaying angle is too large, the protection mechanism 7 starts to protect the child on the left or right side. When the body on the front side of the bicycle falls to both sides, the stretching rod 703 starts to drive the spring 706 to move outward, and the hydraulic rod 708 moves vertically downward. The balance rods 709 on both sides of the hydraulic rod 708 assist the hydraulic rod 708 to fall vertically and drive the bottom plate 710 downward until the suction block 711 at the bottom is fixed on the ground. The pressing plate 704 and the pressure ball 705 provide pressure above. When the bicycle is in a vertical state, the two are arranged naturally outward to prevent the stretching rod 703 from being scratched. When the bicycle falls, the suction block 711 is fixed on the ground, and the pressing plate 704 and the pressure ball 705 can squeeze downward from above to strengthen the stability of the bottom. After the protection mechanism 7 is activated, the support mechanism 9 is immediately on the same side as the protection mechanism 7. When the rear part of the bicycle sways left and right, the fixed plate 905 starts to sway. When the bicycle falls, the fixed plate 905 is fixed on the ground accordingly. At this time, the electric push plate 907 can be activated, and the electric push plate 907 drives the auxiliary pedal 908 to move forward. The support rod 904 is more stable than the pedal position. At this time, the child can temporarily step on the auxiliary pedal 908 to keep balanced. Protect the child to prevent the bicycle from falling and causing injury to the child. When the rear part of the bicycle sways left and right, it will trigger the support mechanism 9, and then the protection mechanism 7 on the same side as the support mechanism 9 starts to work.

[0053] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A steering limit mechanism for a children's bicycle, specifically including: A front fork (1), characterized in that: the front fork (1) has a reinforced outer shell, and a head tube (2) arranged above the front fork (1). A limit mechanism (4) is fixedly connected inside the head tube (2). A clamping mechanism (3) is slidably connected inside the limit mechanism (4). A down tube (8) is fixedly connected to the rear side of the front fork (1), and a support mechanism (9) is fixedly connected to the outside of the down tube (8); A balance plate (5), which has a stable bottom plate and a fixing rod (6) arranged inside the balance plate (5). A protection mechanism (7) is fixedly connected to the outside of the fixing rod (6); The limit mechanism (4) includes a base (401). A support chassis (402) is rotatably connected inside the base (401). A clamping disc (403) is fixedly connected above the support chassis (402). A first slideway (405) is opened inside the limit mechanism (4). The base (401) is fixedly connected inside the head tube (2); The limit mechanism (4) further includes a second slideway (404). A first sliding ball (406) is fixedly connected inside the second slideway (404). An elastic plate (407) is fixedly connected inside the second slideway (404). A second sliding ball (408) is snap-fitted inside the elastic plate (407). A rubber double plate (409) is fixedly connected inside the second slideway (404). A friction strip is fixedly connected to the outside of the rubber double plate (409). The second slideway (404) is opened inside the head tube (2); The clamping mechanism (3) includes a shock-absorbing shell (301). A sound insulation board is fixedly connected to the outside of the shock-absorbing shell (301). A rotating plate (302) is snap-fitted inside the clamping disc (403). The shock-absorbing shell (301) is fixedly connected inside the head tube (2). The first slideway (405) is opened inside the shock-absorbing shell (301); A scraping plate (303) is fixedly connected to the outside of the rotating plate (302). An auxiliary plate (304) is fixedly connected to the outside of the rotating plate (302). A vertical shaft (305) is fixedly connected above the rotating plate (302). A load-bearing plate (306) is fixedly connected to the outside of the vertical shaft (305). A clamping hole is opened inside the load-bearing plate (306). A handlebar is snap-fitted inside the clamping hole. The auxiliary plate (304) is slidably connected inside the first slideway (405); The protection mechanism (7) includes a fixing ring (701). A clamping plate (702) is fixedly connected to the outside of the fixing ring (701). A stretching rod (703) is rotatably connected inside the clamping plate (702). A spring (706) is fixedly connected to the outside of the stretching rod (703). The spring (706) is fixedly connected to the outside of the fixing rod (6). The fixing ring (701) is fixedly connected to the outside of the fixing rod (6).

2. The steering limit mechanism for a children's bicycle according to claim 1, wherein: The head tube (2) is fixedly connected above the front fork (1), the balance plate (5) is fixedly connected below the front fork (1), a shock-absorbing arc plate is fixedly connected to the outside of the front fork (1), and a brake assembly is fixedly connected to the inside of the front fork (1).

3. The steering limit mechanism for a children's bicycle according to claim 1, wherein: A pressing plate (704) is fixedly connected to the outside of the stretching rod (703), a pressure ball (705) is fixedly connected above the pressing plate (704), and a connecting plate (707) is fixedly connected below the clamping plate (702).

4. A steering limit mechanism for a children's bicycle according to claim 3, characterized in that: A hydraulic rod (708) is fixedly connected below the connecting plate (707), balance rods (709) are respectively fixedly connected to the left and right ends of the hydraulic rod (708), a bottom plate (710) is fixedly connected below the hydraulic rod (708), and a suction block (711) is fixedly connected below the bottom plate (710).

5. A steering limit mechanism for a children's bicycle according to claim 1, characterized in that: The support mechanism (9) includes a reinforcement joint (901), a rear upper fork (902) is fixedly connected to the outside of the reinforcement joint (901), a bearing (903) is fixedly connected to the outside of the rear upper fork (902), and the reinforcement joint (901) is fixedly connected to the outside of the down tube (8).

6. The steering limit mechanism for a children's bicycle according to claim 5, characterized in that: A support rod (904) is rotatably connected to the inside of the bearing (903), a fixing plate (905) is rotatably connected below the support rod (904), and a plurality of friction blocks are fixedly connected to the bottom of the fixing plate (905).

7. A steering limit mechanism for a children's bicycle according to claim 5, characterized in that: The support mechanism (9) further includes a backing plate (906), an electric push plate (907) is fixedly connected to the inside of the backing plate (906), a second bearing is fixedly connected to the outside of the electric push plate (907), and an auxiliary pedal (908) is rotatably connected to the inside of the second bearing.

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