Child tricycle front system with clutch mechanism

Abstract

The utility model relates to a children's tricycle front system with a clutch mechanism, which comprises the clutch mechanism, the clutch mechanism comprises a support seat, a lower clutch piece, an upper clutch piece and a toggle switch, the support seat is fixed with a front fork, a bottom tube is rotatably connected to the top of the support seat, a handlebar component is arranged at the top of the bottom tube, and the toggle switch is arranged on the outer wall of the bottom tube. The lower clutch piece and the upper clutch piece are sequentially arranged between the supporting base and the bottom pipe, the lower clutch piece is connected with the toggle switch, the matching position of the lower clutch piece and the upper clutch piece is provided with an inclined face section, a plug pin is formed at the bottom of the upper clutch piece, the lower clutch piece and the supporting base are correspondingly provided with an inner sliding channel and a locking groove respectively, and the plug pin is arranged in the inner sliding channel in a sliding fit mode. The locking grooves are inserted and matched with the locking grooves; according to the technical scheme, the bottom pipe connected with the handlebar assembly and the front fork connected with the front wheel can be unlocked, so that the handlebar assembly can rotate independently, and low-age children can still ride in a comfortable and correct riding posture.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, and more specifically to a front vehicle system for a children's tricycle with a clutch mechanism. Background Technology

[0002] A children's tricycle is a riding tool designed specifically for infants and toddlers, typically suitable for children aged 1 to 3. This type of tricycle combines the functions of a children's tricycle and a baby stroller, allowing children to ride on their own or for parents to control the movement of the tricycle by pushing a lever.

[0003] In the structure of a children's tricycle, the front wheel is usually the active steering wheel, which is responsible for controlling the direction, while the rear wheel is the passive wheel, mainly providing support and stability. The handlebars of a conventional children's tricycle are directly connected to the front wheel through a steering shaft or linkage, forming a whole. The handlebars and the front wheel always rotate synchronously. This design is to allow children to control the direction of the tricycle by manipulating the handlebars, thus exercising their hand-eye coordination and sense of balance.

[0004] The problem with the above structure is that young children often have difficulty controlling the direction of the ride smoothly through the handlebars when they first learn to ride, which poses a high risk of accidents. Secondly, when parents control the direction of the ride by pushing the lever, if the child tries to adjust the direction of the ride by controlling the handlebars at the same time, it will cause a conflict in the direction control, making it difficult to turn and unable to complete the turn smoothly, or even causing the tricycle to go out of control. Therefore, there is also a great safety hazard in this situation.

[0005] In response, Chinese Patent No. CN217347935U discloses a handlebar steering structure for a children's bicycle. The handlebar in this structure can stop at two positions within the connecting sleeve: a high position and a low position. That is, the handlebar can be raised and lowered. At the same time, a clutch mechanism is provided between the handlebar and the connecting sleeve. When the handlebar is in the high position, the clutch mechanism is disengaged, allowing the handlebar assembly to rotate relative to the connecting sleeve, thus preventing the front wheel from rotating synchronously. When the handlebar is in the low position, the clutch mechanism is engaged, allowing the handlebar assembly to steer the front fork and front wheel through the connecting sleeve.

[0006] The handlebar steering mechanism of the aforementioned children's bicycle still has the following problems: under the action of the clutch mechanism, the handlebar needs to be raised or lowered to lock or unlock with the front wheel. When the parent needs to control the lever to adjust the riding direction, the clutch mechanism disengages and the handlebar stays in a high position. For young children, who are often small and thin, they must lean forward to hold the handlebar or overextend their arms to hold it in order to ensure that they are sitting stably on the seat. Obviously, this incorrect riding posture will cause arm and shoulder fatigue, and will seriously affect comfort and balance, especially when riding for a long time. Utility Model Content

[0007] In response to the above issues, and to overcome the problem that existing children's tricycles with clutch mechanisms require young children with small builds to lean forward or overextend their arms to grip the handlebars when the handlebars are in the high position, leading to incorrect riding posture, arm and shoulder fatigue, and severely affecting comfort and balance, the purpose of this invention is to provide a clutchable children's tricycle front system that allows the handlebars to lock or unlock with the front wheel, enabling the handlebars to rotate independently, while still allowing young children to ride in a comfortable and correct posture, thereby achieving good comfort and balance.

[0008] To achieve the above objectives, the technical solution of this utility model is:

[0009] A child tricycle front system with a clutch mechanism includes a front wheel, a front fork, a handlebar assembly, and a base tube. The clutch mechanism includes a support base, a lower clutch component, an upper clutch component, and a toggle switch. The support base is fixed to the front fork. The base tube is rotatably connected to the top of the support base. The handlebar assembly is located on the top of the base tube. The toggle switch is located on the outer wall of the base tube. The lower and upper clutch components are sequentially located between the support base and the base tube. The lower clutch component is connected to the toggle switch. Both the lower and upper clutch components have beveled sections at their mating points. A pin is formed at the bottom of the upper clutch component. A corresponding inner sliding channel is formed on the lower clutch component, and a corresponding locking groove is formed on the support base. The pin slides within the inner sliding channel and engages with the locking groove.

[0010] Preferably, the lower clutch has a clutch block formed at the top, and the upper clutch has a clutch groove at the bottom. The clutch block is embedded in the clutch groove. The inclined section includes a lower inclined surface on the right side wall of the clutch block and an upper inclined surface on the right side wall of the clutch groove. The lower inclined surface and the upper inclined surface abut against each other.

[0011] Preferably, a tactile key is formed on the top of the clutch block, and a tactile slot is correspondingly provided on the inner top wall of the clutch groove, with the tactile key inserted into the tactile slot.

[0012] Preferably, the clutch mechanism also includes a sleeve, which is located between the support base and the lower clutch component. The sleeve has a limiting groove, which corresponds to the pin and engages with the pin.

[0013] Preferably, a guide groove is provided on the inner wall of the bottom tube, and a guide block is correspondingly formed on the outer wall of the upper clutch, with the guide block slidingly engaged in the guide groove.

[0014] Preferably, a rotating sleeve is formed inside the bottom tube, and a rotating rod is formed on the top of the support base. The bottom tube is fitted onto the outside of the rotating rod through the rotating sleeve and is rotatably connected to the support base.

[0015] Preferably, the handlebar assembly includes a handlebar stem, a handlebar seat, a latch, a 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 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 push-button switch. A third movable cavity is also formed on the handlebar seat, communicating 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.

[0016] Preferably, the handlebar assembly also includes a first spring and a second spring. The first spring is disposed in the second movable cavity, with its two ends abutting against the locking block and the inner wall of the second movable cavity, respectively. The second spring is disposed in the third movable cavity, with its two ends abutting against the locking tongue and the inner wall of the third movable cavity, respectively.

[0017] Preferably, the locking block has a first anti-rotation block and a second anti-rotation block. The first anti-rotation block is opposite to the push switch and its shape is non-circular. The second anti-rotation block is located on the outer peripheral wall of the locking block. A first anti-rotation groove is formed on the inner wall of the first movable cavity and a second anti-rotation groove is formed on the inner wall of the second movable cavity. The first anti-rotation groove is adapted to the first anti-rotation block and the second anti-rotation groove is adapted to the second anti-rotation block.

[0018] Preferably, an inner guide groove is provided on the bottom wall of the first movable cavity, the inner guide groove is connected to the second movable cavity, a pin is formed on the push switch, the pin is opposite to the inner guide groove and inserted into the inner guide groove, and the pin is L-shaped.

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

[0020] (1) The bottom tube is rotatably connected to the support seat. The bottom tube is controlled to rotate by the handlebar assembly. In this state, when the child turns the handlebar assembly, he cannot directly drive the support seat and the front fork fixed to the support seat to rotate. Consequently, he will not be able to change the rolling direction of the front wheel. This allows children who are learning to ride to control the riding direction smoothly, reducing the occurrence of accidents. It also avoids the problem of difficulty in steering or even loss of control of the vehicle when parents need to control the riding direction, further improving riding safety.

[0021] (2) When the bottom tube and the support are switched between rotating connection and fixed connection, only the upper clutch moves up and down inside the bottom tube. The height of the bottom tube and the connected handlebar assembly remains constant. In this way, even for young children, there is no need to lean forward or overextend their arms to hold the handlebars, so that children can maintain the correct riding posture while riding and significantly improve comfort and balance during long rides. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the front system of the children's tricycle of this utility model;

[0023] Figure 2 This is an exploded structural diagram of the clutch mechanism of the front vehicle system of the children's tricycle of this utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the lower clutch component of the clutch mechanism of the front system of the children's tricycle of this utility model;

[0025] Figure 4 This is a schematic diagram of the overall structure of the upper clutch component of the clutch mechanism of the front system of the children's tricycle of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the clutch mechanism of the front system of the children's tricycle of this utility model when the lower clutch component and the upper clutch component are engaged;

[0027] Figure 6 This is a schematic diagram of the overall structure of the support seat for the clutch mechanism of the front vehicle system of the children's tricycle of this utility model;

[0028] Figure 7 This is a schematic diagram of the overall structure of the bottom tube of the clutch mechanism of the front vehicle system of the children's tricycle of this utility model;

[0029] Figure 8 This is a schematic diagram of the overall structure of the insert sleeve of the clutch mechanism of the front vehicle system of the children's tricycle of this utility model;

[0030] Figure 9 This is a cross-sectional structural diagram of the front vehicle system of the children's tricycle of this utility model;

[0031] Figure 10This is a utility model Figure 9 A magnified structural diagram of part A;

[0032] Figure 11 This is an exploded structural diagram of the handlebar assembly of the front vehicle system of the children's tricycle of this utility model;

[0033] Figure 12 This is a schematic diagram of the structure of the push switch and locking block of the handlebar assembly of the front system of the children's tricycle of this utility model after separation;

[0034] Figure 13 This is a utility model Figure 12 A schematic diagram of the enlarged structure of part B;

[0035] Figure 14 This is a schematic diagram of the overall structure of the handlebar seat of the front vehicle system of the children's tricycle of this utility model;

[0036] Figure 15 This is a schematic diagram of the overall structure of the locking block of the handlebar assembly of the front vehicle system of the children's tricycle of this utility model;

[0037] Figure 16 This is a schematic diagram of the overall structure of the push-button switch of the front vehicle system of the children's tricycle.

[0038] As shown in the figure:

[0039] 1. Front wheel; 2. Front fork; 3. Handlebar assembly; 301. Handlebar stem; 302. Handlebar seat; 302a. Second movable cavity; 302b. Third movable cavity; 302c. Second anti-rotation groove; 303. Locking tongue; 304. Push switch; 304a. Pin; 305. Slide switch; 306. Locking block; 306a. First anti-rotation block; 306b. Second anti-rotation block; 307. First spring; 308. Second spring; 4. Base tube; 401. Guide groove; 402. Sleeve; 403. Mounting groove; 40 3a. First movable cavity; 403b. First anti-rotation groove; 403c. Inner guide groove; A1. Clutch mechanism; 5. Support base; 501. Lock groove; 502. Rotating rod; 6. Lower clutch component; 601. Inner sliding channel; 602. Clutch block; 602a. Lower inclined surface; 602b. Touch-sensitive key; 7. Upper clutch component; 701. Pin; 702. Clutch groove; 702a. Upper inclined surface; 702b. Touch-sensitive slot; 703. Guide block; 8. Toggle switch; a1. Inclined section; 9. Sleeve; 901. Limiting groove. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the purpose of simplifying the description and do not indicate or imply that the orientation is a specific orientation or specific orientation structure and operation. Therefore, they should not be construed as limiting this utility model.

[0042] like Figures 1 to 6 as well as Figure 9 and Figure 10As shown, this utility model relates to a front system for a children's tricycle with a clutch mechanism. Similar to a conventional children's tricycle front system, it includes a front wheel 1, a front fork 2, a handlebar assembly 3, and a bottom tube 4. Specifically, it also includes a clutch mechanism A1, which includes a support base 5, a lower clutch component 6, an upper clutch component 7, and a toggle switch 8. The support base 5 is located on top of the front fork 2 and is fixedly connected to it. The lower clutch component 6 and the upper clutch component 7 are sequentially located on top of the support base 5 and are housed within the bottom tube 4. The upper clutch component 7 and the lower clutch component 6 can rotate relative to each other, and the upper clutch component 7 can move up and down along the inner cavity of the bottom tube 4. The handlebar assembly 3 is located on top of the bottom tube 4. The toggle switch 8... The lower clutch 6 is located on the outer wall of the bottom tube 4 and connected to the upper clutch 7. The lower clutch 6 is driven by the toggle switch 8 to rotate relative to the upper clutch 7, and drives the upper clutch 7 to move up and down inside the bottom tube 4. The bottom tube 4 is rotatably connected to the support seat 5. The rotation of the bottom tube 4 is controlled by the handlebar assembly 3. In this state, when a child turns the handlebar assembly 3, he cannot directly drive the support seat 5 and the front fork 2 fixed to the support seat 5 to rotate. Consequently, he will not be able to change the rolling direction of the front wheel 1. This allows children who are learning to ride to control the riding direction smoothly, reducing the occurrence of accidents. It also avoids steering difficulties or even loss of control when parents need to control the riding direction, further improving riding safety. In this utility model, the bottom tube 4 and the support seat 5 are allowed to be rotatably connected and fixedly connected. The switching mechanism involves the lower clutch 6 and the upper clutch 7, both having a sloping section a1 at their mating points. When the lower clutch 6 rotates, the sloping section a1 provides a smooth, upward-sloping guide for the upper clutch 7, causing the upper clutch 7 to gradually rise or fall to its original position within the bottom tube 4. A pin 701 is formed at the bottom of the upper clutch 7. It is understood that the height of the pin 701 changes synchronously with the height of the upper clutch 7. An inner sliding channel 601 is provided on the lower clutch 6 corresponding to the pin 701, and a locking groove 501 is provided on the support base 5 corresponding to the pin 701. The pin 701 slides opposite to and connects with the inner sliding channel 601, and the pin 701 slides within the inner sliding channel 601 and engages with the locking groove 501, thereby... The bottom tube 4 and the support seat 5 are locked together to form a fixed connection. At this time, if the child adjusts the direction of the handlebar assembly 3, the change in the direction of the handlebar assembly 3 can be transmitted through the bottom tube 4 to the support seat 5 and the front fork 2, thereby changing the rolling direction of the front wheel 1. When the lower clutch 6 is rotated by the toggle switch 8, under the action of the inclined section a1 between it and the upper clutch 7, the height of the upper clutch 7 and the pin 701 is raised, so that the pin 701 can disengage from the locking groove 501, thereby releasing the locked state of the bottom tube 4 and the support seat 5, and preventing the linkage between the handlebar assembly 3 and the front wheel 1. The inner sliding channel 601 limits the maximum rotation angle of the lower clutch 6 to prevent over-rotation. In addition, when the bottom tube 4 and the support seat 5 switch between a rotatable connection and a fixed connection,Only the upper clutch 7 moves up and down inside the bottom tube 4, keeping the height of the bottom tube 4 and the connected handlebar assembly 3 constant. This eliminates the need for even young children to lean forward or overextend their arms to grip the handlebars, allowing them to maintain a correct riding posture and significantly improving comfort and balance during long rides.

[0043] like Figures 3 to 5 As shown, a clutch block 602 is formed on the top of the lower clutch 6. The clutch block 602 is a boss structure that protrudes from the top of the lower clutch 6. A clutch groove 702 corresponding to the clutch block 602 is formed on the bottom of the upper clutch 7. The clutch block 602 is embedded in the clutch groove 702. The inclined section a1 includes a lower inclined surface 602a on the right side wall of the clutch block 602 and an upper inclined surface 702a on the right side wall of the clutch groove 702. In this utility model, the shape of the clutch groove 702 matches the clutch block 602, so that the slope of the lower inclined surface 602a is consistent with that of the upper inclined surface 702a. Thus, in the engaged state, the lower inclined surface 602a... 02a can abut against the upper inclined surface 702a. When it is necessary to release the locking rotation between the bottom tube 4 and the support seat 5, the lower clutch block 602 rotates to make the lower inclined surface 602a and the upper inclined surface 702a slide relative to each other and form a guide, thereby raising the height of the upper clutch 7 and the pin 701. The pin 701 can disengage from the locking groove 501 of the support seat 5. When it is necessary to relock, the lower clutch 6 is rotated back. Similarly, through the guiding action of the lower inclined surface 602a and the upper inclined surface 702a, the height of the upper clutch 7 and the pin 701 is lowered, so that the pin 701 is inserted into the locking groove 501.

[0044] like Figures 3 to 5 As shown, a tactile latch 602b is formed on the top of the clutch block 602, and a corresponding tactile slot 702b is formed on the inner top wall of the clutch groove 702. The tactile latch 602b is inserted into the tactile slot 702b. It should be noted that the shape of the mating part between the tactile latch 602b and the tactile slot 702b is arc-shaped, ensuring that when the lower clutch 6 rotates, the tactile latch 602b can smoothly disengage from the tactile slot 702b. The function of the tactile latch 602b is to allow parents to intuitively see whether the latch 701 has disengaged from the locking groove 5 when controlling the toggle switch 8. 01 is in place, or whether it is properly engaged with the locking groove 501. Specifically, when the tactile key 602b and the tactile groove 702b are engaged, the inner and outer walls abut against each other, thus creating resistance when the lower clutch 6 rotates. The arc-shaped mating surface allows the lower clutch 6 to separate from the lower clutch groove 702. The resistance formed at the moment of separation disappears, and the parent's hand will receive obvious tactile feedback. Similarly, when the tactile key 602b and the tactile groove 702b are engaged again, the parent's hand will also receive insertion feedback as the tactile key 602b is re-embedded into the tactile groove 702b.

[0045] like Figure 2 , Figure 8 , Figure 9 and Figure 10 As shown, the clutch mechanism A1 also includes a sleeve 9, which is located between the support base 5 and the lower clutch 6. A limiting groove 901 is provided on the sleeve 9, which corresponds to the pin 701. The pin 701 passes through the inner sliding channel 601 and the limiting groove 901 in sequence and is engaged with the locking groove 501. The setting of the limiting groove 901 only allows the pin 701 and the integrated upper clutch 7 to move up and down, thereby effectively restricting the rotation of the pin 701 and the upper clutch 7.

[0046] like Figure 4 , Figure 5 and Figure 7 As shown, a guide groove 401 is provided on the inner wall of the bottom tube 4. The extension direction of the guide groove 401 is consistent with the length direction of the bottom tube 4. A guide block 703 is correspondingly formed on the outer wall of the upper clutch 7. The guide block 703 is slidably fitted in the guide groove 401, thereby ensuring that the upper clutch block 602 always maintains linear movement. The upper clutch 7 is further restricted from rotation by the insert sleeve 9.

[0047] like Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, a rotating sleeve 402 is formed inside the bottom tube 4, and a rotating rod 502 is formed on the top of the support base 5. The bottom tube 4 is sleeved on the outside of the rotating rod 502 through the rotating sleeve 402 and is rotatably connected to the support base 5. The lower clutch 6, the upper clutch 7, and the insert 9 are all sleeved on the outside of the rotating sleeve 402. In this way, the rotating sleeve 402, together with the guide groove 401 on the inner wall of the bottom tube 4 and the limiting groove 901 of the insert 9, can more effectively restrict the movement direction of the upper clutch 7, and at the same time limit the lower clutch 6 and the insert 9 to ensure that they maintain a relative position.

[0048] like Figure 1 , Figure 2 , Figures 11 to 16As shown, the handlebar assembly 3 includes a handlebar stem 301, a handlebar seat 302, a locking tongue 303, a push-button switch 304, a slide switch 305, and a locking block 306. The top of the base tube 4 has a mounting groove 403, and the handlebar seat 302 is hinged within the mounting groove 403. The handlebar stem 301 is located on top of the handlebar seat 302. Rotation of the handlebar seat 302 allows the handlebar stem 301 to switch between folded and unfolded states. A first movable cavity 403a is formed on the side wall of the mounting groove 403, and a corresponding second movable cavity 302a is formed on the handlebar seat 302. The first and second movable cavities 403a are interconnected. The push-button switch 304 is located in the first movable cavity 403a. Pressing the switch... When the handlebar 304 is pressed, it can slide within the first movable cavity 403a. The locking block 306 simultaneously slides within the first movable cavity 403a and the second movable cavity 302a, and is connected to the push switch 304. When the push switch 304 is pressed, it will cause the locking block 306 to move within the first and second movable cavities 403a and 302a. As the locking block 306 moves, it can disengage from the first movable cavity 403a and fully enter the second movable cavity 302a. The engagement positions of the locking block 306 with the first and second movable cavities 403a are both non-circular. When the locking block 306 engages with the first and second movable cavities 403a and 302a, it can prevent the handlebar seat from... Rotation 302 keeps the handlebar 301 and handlebar seat 302 stably in their unfolded or folded state. The depth of the second movable cavity 302a matches the locking block 306, allowing the locking block 306 to move completely into the second movable cavity 302a, thus disengaging from the first movable cavity 403a. At this point, the locking block 306 releases its restriction on the handlebar seat 302, allowing the handlebar seat 302 to smoothly drive the handlebar 301 to fold or unfold. The handlebar seat 302 also has a third movable cavity 302b, which communicates with the second movable cavity 302a. The locking tongue 303 slides in the third movable cavity 302b and enters the second movable cavity 302a to abut against the locking block 306. The slide switch 305 is sleeved on the handlebar 301 and connected to the locking tongue 303. The locking tongue 303 can be moved up and down in the third movable cavity 302b by the slide switch 305, so that it can disengage in the second movable cavity 302a. Obviously, when the locking tongue 303 is inside the second movable cavity 302a, the locking block 306 cannot fully enter the second movable cavity 302a, so it still maintains the cooperation with the first movable cavity 403a. That is to say, the locking block 306 acts as the first locking of the handlebar assembly 3, and the locking tongue 303 acts as the second locking. The folding of the handlebar seat 302 and the handlebar 301 requires the locking block 306 and the locking tongue 303 to be unlocked at the same time, so as to effectively prevent the handlebar assembly 3 from being accidentally folded or unfolded.

[0049] like Figure 11As shown, the handlebar assembly 3 also includes a first spring 307 and a second spring 308. The first spring 307 is correspondingly disposed in the second movable cavity 302a, with its two ends abutting against the locking block 306 and the inner wall of the second movable cavity 302a, respectively. The second spring 308 is disposed in the third movable cavity 302b, with its two ends abutting against the locking tongue 303 and the inner wall of the third movable cavity 302b, respectively. When the locking block 306 moves into the second movable cavity 302a, the first spring 307 will be compressed. The second spring 308 will be compressed when the locking tongue 303 disengages from the second movable cavity 302a. When the push switch 304 and the slide switch 305 are released, the first spring 307 and the second spring 308 will restore their deformation. Under the action of elasticity, the locking block 306 and the locking tongue 303 can automatically lock.

[0050] like Figures 11 to 15 As shown, a first anti-rotation block 306a and a second anti-rotation block 306b are formed on the locking block 306. The first anti-rotation block 306a is opposite to the push switch 304 and its shape is non-circular. The second anti-rotation block 306b is located on the outer peripheral wall of the locking block 306, which makes the shape of the locking block 306 also non-circular. A first anti-rotation groove 403b is formed on the inner wall of the first movable cavity 403a, and a second anti-rotation groove 302c is formed on the inner wall of the second movable cavity 302a. The first anti-rotation groove 403b is adapted to the first anti-rotation block 306a, and the second anti-rotation groove 302c is adapted to the second anti-rotation block 306b. Based on the above settings, rotation can be prevented when the first anti-rotation block 306a cooperates with the first movable cavity 403a and the second movable cavity 302a, ensuring correct reset after movement.

[0051] like Figure 7 and Figure 16 As shown, an inner guide groove 403c is provided on the bottom wall of the first movable cavity 403a. The inner guide groove 403c is connected to the second movable cavity 302a. A pin 304a is formed on the push switch 304. The pin 304a is opposite to the inner guide groove 403c and inserted into the inner guide groove 403c. The pin 304a is L-shaped. Based on the above configuration, the L-shaped pin 304a is hooked to the outer wall of the inner guide groove 403c in the circumferential direction, thereby restricting the formation of the push switch 304 and preventing the push switch 304 from dislodging.

[0052] Combination Figures 1 to 16When a child tricycle with this utility model's front vehicle system is used for riding, the bottom tube 4 connecting the handlebar assembly 3 and the support seat 5 can switch between a rotating and locked state. Parents only need to control the toggle switch 8 to move, causing the lower clutch 6 inside the bottom tube 4 to rotate. The lower inclined surface 602a of the clutch block 602 of the lower clutch 6 and the lower inclined surface 602a of the clutch groove 702 of the upper clutch 7 can form a guide, raising the height of the upper clutch 7 and the integrated pin 701. The guide block 703 of the upper clutch 7 will move along the guide groove 401 on the inner wall of the bottom tube 4. At this time, the pin 701 can disengage from the locking groove 501 of the support seat 5, and the bottom tube 4 is correspondingly unlocked from the support seat 5. When the handlebar assembly 3 drives the bottom tube 4 to rotate, the direction of the front wheel 1 will not change. When the toggle switch 8 drives the lower clutch 6 to rotate back to its original position, the pin 701 can re-engage. Inserted into the locking groove 501 of the support seat 5, the child can transmit rotation to the support seat 5 through the handlebar assembly 3, thereby driving the front wheel 1 to rotate and achieve independent adjustment of the riding direction. In addition, the handlebar assembly 3 allows switching between unfolded and folded states. Parents first need to pull the sliding switch 305, which drives the locking tongue 303 to disengage from the second movable cavity 302a of the handlebar seat 302. At this time, the second spring 308 is compressed, and force can continue to be applied to the pressing switch 304. The pressing switch 304 drives the locking block 306 to move completely into the second movable cavity 302a. At this time, the locking block 306 releases the rotation of the handlebar seat 302, and the handlebar seat 302 can drive the handlebar 301 to fold or unfold. After folding or unfolding, the first spring 307 and the second spring 308 can respectively drive the locking block 306 and the locking tongue 303 to reset, realizing automatic locking.

[0053] The embodiments and descriptions above are merely illustrative of the principles and preferred embodiments of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A child's tricycle front wheel system having a clutch mechanism, comprising a front wheel (1), a front fork (2), a handlebar assembly (3) and a bottom tube (4), characterized in that, It also includes a clutch mechanism (A1), which includes a support base (5), a lower clutch component (6), an upper clutch component (7), and a toggle switch (8). The support base (5) is located on the top of the front fork (2), the bottom tube (4) is rotatably connected to the top of the support base (5), the handlebar assembly (3) is located on the top of the bottom tube (4), the toggle switch (8) is located on the outer wall of the bottom tube (4), and the lower clutch component (6) and the upper clutch component (7) are sequentially located on the support base (5) and the bottom tube (4). Between them, the lower clutch (6) is connected to the toggle switch (8), and the mating positions of the lower clutch (6) and the upper clutch (7) both have inclined sections (a1). The bottom of the upper clutch (7) has a pin (701), and the lower clutch (6) has an inner sliding channel (601) correspondingly opened. The support base (5) has a corresponding locking groove (501). The pin (701) slides in the inner sliding channel (601) and is inserted into the locking groove (501).

2. The child tricycle front system with a clutch mechanism according to claim 1, characterized in that, The lower clutch (6) has a clutch block (602) formed on its top, and the upper clutch (7) has a clutch groove (702) correspondingly formed on its bottom. The clutch block (602) is embedded in the clutch groove (702). The inclined section (a1) includes a lower inclined surface (602a) on the right side wall of the clutch block (602) and an upper inclined surface (702a) on the right side wall of the clutch groove (702). The lower inclined surface (602a) and the upper inclined surface (702a) abut against each other.

3. The child tricycle front system with a clutch mechanism according to claim 2, characterized in that, The clutch block (602) has a tactile key (602b) formed on its top, and a tactile slot (702b) is correspondingly provided on the inner top wall of the clutch groove (702), and the tactile key (602b) is inserted into the tactile slot (702b).

4. A child tricycle front system with a clutch mechanism according to any one of claims 1 to 3, characterized in that, The clutch mechanism (A1) also includes a sleeve (9), which is located between the support base (5) and the lower clutch member (6). A limiting groove (901) is provided on the sleeve (9), which corresponds to the pin (701) and is engaged with the pin (701).

5. A child tricycle front system with a clutch mechanism according to claim 4, characterized in that, A guide groove (401) is provided on the inner wall of the bottom tube (4), and a guide block (703) is correspondingly formed on the outer wall of the upper clutch (7). The guide block (703) is slidably fitted in the guide groove (401).

6. A child tricycle front system with a clutch mechanism according to claim 5, characterized in that, The bottom tube (4) has a rotating sleeve (402) inside, and the support base (5) has a rotating rod (502) on top. The bottom tube (4) is sleeved on the outside of the rotating rod (502) through the rotating sleeve (402) and is rotatably connected to the support base (5).

7. A child tricycle front system with a clutch mechanism according to any one of claims 1, 2, 3, 5 or 6, characterized in that, The handlebar assembly (3) includes a handlebar stem (301), a handlebar seat (302), a latch (303), a push switch (304), a slide switch (305), and a locking block (306). A mounting groove (403) is provided on the top of the base tube (4). The handlebar seat (302) is hinged in the mounting groove (403). The handlebar stem (301) is located on the top of the handlebar seat (302). A first movable cavity (403a) is provided on the side wall of the mounting groove (403). A second movable cavity (302a) is correspondingly provided on the handlebar seat (302). The push switch (304) is located in the first movable cavity (403a). The locking block (306)... 6) It slides with the first movable cavity (403a) and the second movable cavity (302a), and the shape of the mating position is non-circular. The depth of the second movable cavity (302a) matches the locking block (306). The locking block (306) abuts against the push switch (304). The handlebar seat (302) is also provided with a third movable cavity (302b). The third movable cavity (302b) is connected to the second movable cavity (302a). The locking tongue (303) slides in the third movable cavity (302b) and abuts against the locking block (306). The sliding switch (305) is sleeved on the handlebar (301) and connected to the locking tongue (303).

8. A child tricycle front system with a clutch mechanism according to claim 7, characterized in that, The handlebar assembly (3) further includes a first spring (307) and a second spring (308). The first spring (307) is disposed in the second movable cavity (302a), and its two ends abut against the locking block (306) and the inner wall of the second movable cavity (302a), respectively. The second spring (308) is disposed in the third movable cavity (302b), and its two ends abut against the locking tongue (303) and the inner wall of the third movable cavity (302b), respectively.

9. A child tricycle front system with a clutch mechanism according to claim 8, characterized in that, The locking block (306) has a first anti-rotation block (306a) and a second anti-rotation block (306b). The first anti-rotation block (306a) is opposite to the push switch (304) and its shape is non-circular. The second anti-rotation block (306b) is located on the outer peripheral wall of the locking block (306). A first anti-rotation groove (403b) is formed on the inner wall of the first movable cavity (403a), and a second anti-rotation groove is formed on the inner wall of the second movable cavity (302a). The first anti-rotation groove (403b) is adapted to the first anti-rotation block (306a), and the second anti-rotation groove (302c) is adapted to the second anti-rotation block (306b).

10. A child tricycle front system with a clutch mechanism according to claim 8, characterized in that, An inner guide groove (403c) is provided on the bottom wall of the first movable cavity (403a). The inner guide groove (403c) is connected to the second movable cavity (302a). A pin (304a) is formed on the push switch (304). The pin (304a) is opposite to the inner guide groove (403c) and inserted into the inner guide groove (403c). The pin (304a) is L-shaped.

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