Baby carriage with seat capable of being adjusted in two directions

Abstract

The buggy comprises a buggy frame, the seat, a front fork, a rear fork, a handlebar, a push rod, a front wheel and a rear wheel and further comprises a supporting seat, a height adjusting assembly and a front-back adjusting assembly, a lifting channel is formed in the buggy frame, the bottom of the supporting seat is arranged in the lifting channel in a sliding fit mode, a transverse moving channel is formed in the bottom of the seat, and the height adjusting assembly is arranged in the transverse moving channel. The top of the supporting seat is arranged in the transverse moving channel in a sliding fit mode, the height adjusting assembly is movably connected between the frame and the supporting seat, and the front-back adjusting assembly is movably connected between the seat and the supporting seat. According to the technical scheme, the buggy is provided with the seat capable of being adjusted in the front-back direction and the height direction, so that the buggy can be used by children of multiple age groups, the service life of the buggy is long, frequent replacement is not needed, and economic and time burdens of parents are relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of children's vehicles, and more specifically to a children's vehicle with a bidirectionally adjustable seat. Background Art

[0002] With the improvement of living standards, people's material needs have become more diverse, and this trend is also reflected in the design of the functions of children's vehicles. Modern children's vehicles can often be converted into tricycles or balance bikes according to needs. Such children's vehicles usually have adjustable wheels and seats, enabling them to adapt to children of different ages and different skill levels.

[0003] Most of the adjustable seats of the children's vehicles currently popular on the market can only meet the needs of front-back adjustment or height adjustment. For example, a multifunctional tricycle for children disclosed in the patent with publication number CN215826902U includes a frame, a front frame provided at one end of the frame, and a rear frame provided at the other end of the frame. A seat assembly is detachably connected to the frame, and an adjustment assembly for finely adjusting the position of the seat assembly back and forth is also provided on the frame. The adjustment assembly is detachably connected to the seat assembly, and the position of the seat assembly can be finely adjusted back and forth through the adjustment assembly to achieve the riding comfort of children. Another example is a children's vehicle with adjustable seat height disclosed in the patent with publication number CN216761986U, which includes a frame main body. A communication hole is opened inside the frame main body, and an arc-shaped clamping ring groove is opened outside the communication hole on the inner side of the frame main body. A hollow moving rod is provided inside the communication hole, and a moving buckle structure is fixedly installed at the bottom inside the hollow moving rod. The moving buckle structure includes a first chute, and both sides inside the first chute are slidably connected with first sliders. When adjusting the height of the seat, by pulling up the pull rod, the force-bearing movement of the pull rod drives the linkage rod and the moving buckle structure to move, so that the arc-shaped clamping plate is disengaged from the clamping state with the arc-shaped clamping ring groove, and then the hollow moving rod is directly pulled up or down to move, thereby adjusting the height of the seat.

[0004] When riding a children's vehicle, the riding posture of children and the obtained riding comfort are both very important. However, due to the rapid change in children's height during the growth process, if the seat can only be adjusted in a single way of front-back or height, then the children's vehicle will soon no longer be suitable for the child's body shape. Children with tall height and long legs often cannot keep the correct stretching angles of their backs and legs when riding, while for children with smaller body shapes, they may not be able to step on the pedals correctly, resulting in an inability to obtain a comfortable experience and maintain the correct riding posture. This causes the vehicle to be used only by children of a specific age group, restricting its scope of use, reducing the service life of the vehicle, and at the same time requiring parents to frequently replace the children's vehicle that matches the child's height, which will obviously increase the economic and time burdens. Summary of the Invention

[0005] In view of the above situation, to overcome the problem that most of the existing seats of children's bicycles can only be adjusted in a single direction, either forward and backward or in height, children of different body shapes cannot obtain a comfortable riding experience or maintain a correct riding posture when riding, resulting in the vehicle can only be used by children of a specific age group, reducing the service life of the vehicle, and at the same time, it is necessary to frequently replace the children's bicycle that matches the child's height, increasing the economic and time burdens. The purpose of the present utility model is to provide a children's bicycle with a seat that can be adjusted in both the forward and backward and height directions, enabling the vehicle to be used by children of multiple age groups, so that the vehicle has a long service life, does not need to be frequently replaced, and reduces the economic and time burdens on parents.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A children's bicycle with a bidirectionally adjustable seat, which includes a frame, a seat, a front fork, a rear fork, a handlebar, a push rod, a front wheel and a rear wheel. It also includes a support seat, a height adjustment component and a front and rear adjustment component. A lifting channel is provided in the frame, the bottom of the support seat is slidably fitted in the lifting channel, a transverse movement channel is provided at the bottom of the seat, and the top of the support seat is slidably fitted in the transverse movement channel. The height adjustment component is movably connected between the frame and the support seat, and the front and rear adjustment component is movably connected between the seat and the support seat.

[0008] Preferably, the height adjustment component includes a plug-in block. A lifting switching channel is provided in the frame. The lifting switching channel is located on one side of the lifting channel and is communicated. The plug-in block is slidably fitted in the lifting switching channel. A lifting gear slot is provided on the support seat, and the plug-in block is inserted into the lifting gear slot.

[0009] Preferably, the height adjustment component further includes a height adjustment switch. A first connection channel is provided on the outer wall of the frame. The first connection channel is communicated with the lifting switching channel. One end of the height adjustment switch passes through the first connection channel and is connected to the plug-in block, and is slidably fitted with the first connection channel.

[0010] Preferably, the height adjustment component further includes a first spring. The first spring is provided in the lifting switching channel, and the two ends thereof are respectively abutted against the plug-in block and the inner wall of the lifting switching channel.

[0011] Preferably, the front and rear adjustment component includes a transverse movement adjustment switch. A transverse movement switching channel and a second communication channel are provided in the seat. The transverse movement switching channel penetrates through the bottom of the seat. The upper end of the transverse movement adjustment switch is slidably fitted with the transverse movement switching channel. A transverse movement gear slot is provided on the support seat. The second communication channel is opposite to the transverse movement gear slot. A clamping block is formed at the upper end of the transverse movement adjustment switch, and the clamping block passes through the second communication channel and is inserted and fitted with the transverse movement gear slot.

[0012] Preferably, the front-back adjustment assembly further includes a baffle plate disposed inside the seat and opposite to the transverse movement switching channel.

[0013] Preferably, the front-back adjustment assembly further includes a second spring disposed in the transverse movement switching channel, and the two ends of the second spring respectively abut against the transverse movement adjustment switch and the baffle plate.

[0014] Preferably, a first hinge interface is provided at the front end of the vehicle frame, a hinge block is provided on the front fork, the hinge block is rotatably connected in the first hinge interface, an installation groove is provided at the rear end of the vehicle frame, the push rod is rotatably connected in the installation groove, and an installation channel is provided inside the vehicle frame, the installation channel communicates with the first hinge interface and the installation groove, a wire is threaded through the installation channel, and the two ends of the wire are respectively connected to the hinge block and the push rod.

[0015] Preferably, the rear fork includes a left support arm and a right support arm, the front ends of the left support arm and the right support arm are rotatably connected to the vehicle frame, and the rear wheel is rotatably connected to the rear ends of the left support arm and the right support arm.

[0016] Preferably, a second hinge interface is provided at the top of the front fork, the bottom of the handlebar is rotatably connected in the second hinge interface, an outer sliding track is provided on the outer wall of the front fork, the outer sliding track communicates with the second hinge interface, an inner sliding track is provided on the handlebar, the inner sliding track is opposite to the outer sliding track, a rotation prevention gear is slidably fitted between the outer sliding track and the inner sliding track, a folding button is slidably fitted in the outer sliding track, a gear limiting member is also fixed in the outer sliding track, the gear limiting member is located between the folding button and the rotation prevention gear, a pushing block is formed on the folding button, a pushing groove is provided on the gear limiting member, the pushing block passes through the pushing groove and abuts against the rotation prevention gear, and a third spring is provided in the inner sliding track, and the two ends of the third spring abut against the rotation prevention gear and the inner sliding track respectively.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] The seat of the children's bicycle of the present utility model can be moved up and down relative to the vehicle frame through the support seat to achieve height adjustment, and it is slidably connected with the support seat, and the front and rear positions can be adjusted by horizontally moving relative to the support seat, so as to be applicable to the use of children of various ages. Thus, not only the service life of the vehicle is prolonged, but also the economic and time burdens caused by parents' frequent replacement of children's bicycles matching the children's height are solved. At the same time, after children of different body shapes adjust the seat to a suitable position according to their own situations, they can obtain a comfortable experience during riding and develop a correct riding posture, enabling children to learn and enjoy the fun of riding in a safe and comfortable environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the children's bicycle of the present utility model;

[0020] Figure 2It is a partial structural schematic diagram of the height adjustment component of the children's vehicle of the present utility model when the height adjustment switch is not toggled, and a partial structural schematic diagram inside the vehicle frame at this time;

[0021] Figure 3 It is a partial structural schematic diagram of the height adjustment component of the children's vehicle of the present utility model when the height adjustment switch is toggled (the arrow is the toggling direction), and a partial structural schematic diagram inside the vehicle frame at this time (the arrow is the moving direction of the plug-in block);

[0022] Figure 4 It is a partial structural schematic diagram inside the vehicle frame when the seat height of the height adjustment component of the children's vehicle of the present utility model is adjusted, and a partial structural schematic diagram when the height adjustment switch is separated;

[0023] Figure 5 It is a partial structural schematic diagram when the seat height of the height adjustment component of the children's vehicle of the present utility model is adjusted;

[0024] Figure 6 It is an internal structural schematic diagram of the seat when the front and rear adjustment component of the children's vehicle of the present utility model is separated from the seat;

[0025] Figure 7 It is the present utility model Figure 6 The enlarged structural schematic diagram of part A;

[0026] Figure 8 It is an internal structural schematic diagram of the seat when the horizontal movement adjustment switch of the front and rear adjustment component of the children's vehicle of the present utility model is not pressed, and a partial structural schematic diagram from another perspective;

[0027] Figure 9 It is an internal structural schematic diagram of the seat when the horizontal movement adjustment switch of the front and rear adjustment component of the children's vehicle of the present utility model is pressed (the arrow is the pressing direction), and a partial structural schematic diagram inside the seat after the front and rear position adjustment is completed (the arrow is the moving direction of the horizontal movement adjustment switch);

[0028] Figure 10 It is a partial structural schematic diagram of the children's vehicle seat after the height and front and rear position adjustments are completed;

[0029] Figure 11 It is a sectional structural schematic diagram of the children's vehicle of the present utility model;

[0030] Figure 12 It is the present utility model Figure 11 The enlarged structural schematic diagram of part B;

[0031] Figure 13 It is a partial structural schematic diagram of the front part of the children's vehicle of the present utility model;

[0032] Figure 14 It is the present utility modelFigure 13 Schematic diagram of the enlarged structure of part C;

[0033] Figure 15 is a schematic cross-sectional structure diagram of the front part of the children's vehicle of the present utility model;

[0034] Figure 16 is the present utility model Figure 15 Schematic diagram of the enlarged structure of part D;

[0035] Figure 17 is a schematic diagram of the overall structure of the children's vehicle after the seat height and front-back position are adjusted, and the rear vehicle and the handlebar are in the folded state.

[0036] As shown in the figure:

[0037] 1. Support base; 101. Lifting gear slot; 102. Transverse movement gear slot; 2. Height adjustment component; 201. Insertion block; 202. Height adjustment switch; 203. First spring; 3. Front-back adjustment component; 301. Transverse movement adjustment switch; 301a. Block; 302. Baffle; 303. Second spring; 4. Frame; 401. Lifting channel; 402. Lifting switching channel; 403. First connection channel; 404. First hinge interface; 405. Installation slot; 406. Installation channel; 5. Seat; 501. Transverse movement channel; 502. Transverse movement switching channel; 503. Second communication channel; 6. Front fork; 601. Second hinge interface; 602. Outer slideway; 7. Rear fork; 701. Left support arm; 702. Right support arm; 8. Handlebar; 801. Inner slideway; 9. Push rod; 10. Front wheel; 11. Rear wheel; 12. Hinge block; 13. Pull wire; 14. Anti-rotation gear; 15. Folding button; 1501. Push block; 16. Gear limiting part; 1601. Push slot; 17. Third spring. Specific embodiments

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of simplifying the description, rather than indicating or implying that this orientation is a specific orientation that must be had and specific orientation structures and operations. Therefore, it should not be construed as a limitation to the present invention.

[0040] Such as Figures 1 to 10As shown in the figure, the utility model relates to a baby carriage with a seat 5 that can be adjusted bidirectionally. It includes a frame 4, a seat 5, a front fork 6, a front wheel 10, a rear fork 7, a rear wheel 11, a handlebar 8 and a push rod 9. Among them, the seat 5 is installed on the top of the frame 4, the front fork 6 and the rear fork 7 are respectively installed at the front and rear ends of the frame 4, the front wheel 10 and the rear wheel 11 are respectively rotatably connected to the front fork 6 and the rear fork 7, the handlebar 8 is installed on the top of the front fork 6, and the push rod 9 is installed on the frame 4. The above are all common components on existing baby carriages, so the more specific connection methods will not be elaborated here. In particular, it further includes a support base 1, a height adjustment component 2 and a front-back adjustment component 3. A lifting channel 401 is provided in the frame 4. The lifting channel 401 is a channel facing up and down, and its top is in communication with the top of the frame 4. The bottom of the support base 1 is inserted into the top of the lifting channel 401 and is slidably fitted in the lifting channel 401. By moving along the lifting channel 401, the support base 1 can be lifted or lowered. A horizontal movement channel 501 is provided at the bottom of the seat 5. The horizontal movement channel 501 is a channel with a horizontal direction. The top of the support base 1 is slidably fitted in the horizontal movement channel 501 and is slidably connected to the seat 5. Thus, the seat 5 can adjust its height by sliding along the lifting channel 401 through the support base 1. Correspondingly, the seat 5 can also horizontally slide relative to the support base 1 to adjust its front-back position. The height adjustment component 2 is movably connected between the frame 4 and the support base 1. When the height adjustment component 2 cooperates with the support base 1, it can limit the movement of the support base 1 and fix the support base 1 at the adjusted height position. The height adjustment component 2 can also be disengaged from the cooperation with the support base 1 through movement, so that the support base 1 can slide along the lifting channel 401. The front-back adjustment component 3 is movably connected between the seat 5 and the support base 1. Similarly, when the front-back adjustment component 3 cooperates with the support base 1, it can limit the movement of the seat 5 and fix the seat 5 at the adjusted horizontal position. The front-back adjustment component 3 can also be disengaged from the cooperation with the support base 1 through movement, so that the seat 5 can move back and forth relative to the support base 1. The seat 5 of the baby carriage of the utility model can move up and down relative to the frame 4 through the support base 1 to achieve height adjustment, and it is slidably connected to the support base 1. It can adjust its front-back position by horizontally moving relative to the support base 1, so as to be suitable for the use of children of all ages. Thus, it not only extends the service life of the vehicle, but also solves the economic and time burdens caused by parents having to frequently replace baby carriages that match the height of their children. At the same time, after children of different body shapes adjust the seat 5 to a suitable position according to their own situations, they can obtain a comfortable experience when riding and develop a correct riding posture, enabling children to learn and enjoy the fun of riding in a safe and comfortable environment.

[0041] As Figures 2 to 5As shown in the figure, the height adjustment component 2 includes a plug-in block 201. A lifting and switching channel 402 is provided in the vehicle frame 4. The lifting and switching channel 402 is located on one side of the lifting channel 401 and is communicated with the lifting channel 401. In the present utility model, the lifting and switching channel 402 is a horizontally oriented channel. The plug-in block 201 is slidably fitted in the lifting and switching channel 402. Based on the communication between the lifting and switching channel 402 and the lifting channel 401, the plug-in block 201 can be slid along the lifting and switching channel 402 and embedded into the lifting channel 401. A lifting gear slot 101 is provided on the support seat 1. There are at least two lifting gear slots 101, and the lifting gear slots 101 are arranged at intervals along the height direction of the support seat 1. In the present utility model, the support seat 1 with two lifting gear slots 101 is taken as an example. The plug-in block 201 is inserted into the lifting gear slot 101, thereby restricting the movement of the support seat 1 and preventing it from moving up and down along the lifting channel 401. At this time, the seat 5 is fixed at the adjusted height position together with the support seat 1. When height adjustment is required, the plug-in block 201 is slid in a direction away from the lifting channel 401 to disengage it from the lifting gear slot 101. At this time, the support seat 1 can be smoothly slid along the lifting channel 401 to adjust the height of the seat 5. The cooperation between the plug-in block 201 and the lifting gear slots 101 at different positions can fix the seat 5 at different heights, so as to meet the riding needs of children with different body shapes.

[0042] As Figures 2 to 5 shown, the height adjustment component 2 further includes a height adjustment switch 202. A first connection channel 403 is provided on the outer wall of the vehicle frame 4. The first connection channel 403 is communicated with the lifting and switching channel 402, which enables the lifting and switching channel 402 to be communicated with the external space. One end of the height adjustment switch 202 passes through the first connection channel 403 and is connected to the plug-in block 201, and is simultaneously slidably fitted with the first connection channel 403. When the height adjustment switch 202 slides along the first connection channel 403, it can transmit the movement action to the plug-in block 201 to keep it moving synchronously. Thus, children or parents can control the sliding of the height adjustment switch 202 to make the plug-in block 201 be inserted and matched with the lifting gear slots 101 at different positions, conveniently realizing the adjustment of the height of the seat 5.

[0043] As Figure 2 and Figure 4As shown in the figure, the height adjustment assembly 2 further includes a first spring 203. The first spring 203 is disposed in the lifting switching channel 402, and its two ends are respectively in abutment with the insertion block 201 and the inner wall of the lifting switching channel 402. In the initial state, the first spring 203 supports the insertion block 201 to keep it in plug-in fit with the lifting gear slot 101 on the support seat 1, preventing accidental detachment. And when the insertion block 201 is driven by the height adjustment switch 202 to move away from the lifting channel 401, the first spring 203 is compressed and generates elastic potential energy, preparing for the reset of the insertion block 201 after the control applied to the height adjustment switch 202 is removed. Thus, when the insertion block 201 disengages from the current lifting gear slot 101 and the support seat 1 slides up and down, the insertion block 201 abuts against the part of the support seat 1 between any two lifting gear slots 101 under the action of the first spring 203 and automatically inserts when it is opposite to the next lifting gear slot 101, completing the fixation of the seat 5. Therefore, there is no need to repeatedly control the movement of the height adjustment switch 202, streamlining the process of adjusting the height of the seat 5 and making the height adjustment more convenient.

[0044] As Figures 6 to 10 shown, the front-back adjustment assembly 3 includes a lateral movement adjustment switch 301. A lateral movement switching channel 502 and a second communication channel 503 are provided in the seat 5. The lower end of the lateral movement switching channel 502 communicates with the bottom of the seat 5 and thus communicates with the external space. In the present utility model, the lateral movement switching channel 502 is a channel running up and down. The upper end of the lateral movement adjustment switch 301 is inserted from the lower end of the lateral movement switching channel 502 and is in sliding fit with the lateral movement switching channel 502. A lateral movement gear slot 102 is provided on the support seat 1. There are at least two lateral movement gear slots 102, and the lateral movement gear slots 102 are arranged at intervals along the length direction of the support seat 1. In the present utility model, the support seat 1 with two lateral movement gear slots 102 is taken as an example. The second communication channel 503 is opposite to one lateral movement gear slot 102. It should be noted that as the seat 5 moves relative to the support seat 1, the first communication channel can be opposite to different lateral movement gear slots 102. A clamping block 301a is formed at the upper end of the lateral movement adjustment switch 301. The clamping block 301a passes through the second communication channel 503 and is in plug-in fit with the lateral movement gear slot 102, thereby restricting the front-back movement of the seat 5 relative to the support seat 1. At this time, the seat 5 will be fixed at the adjusted front-back position. When front-back position adjustment is required, the lateral movement adjustment switch 301 is pressed, so that the clamping block 301a disengages from the lateral movement gear slot 102. At this time, the seat 5 can be smoothly controlled to move relative to the support seat 1 for front-back position adjustment. The cooperation of the clamping block 301a with different positions of the lateral movement gear slot 102 can fix the seat 5 at different front-back positions, thus meeting the riding needs of children with different body shapes.

[0045] As Figure 8 and Figure 9As shown in the figure, the front-back adjustment component 3 further includes a baffle 302. The baffle 302 is disposed inside the seat 5 and is opposite to the transverse movement switching channel 502. The function of the baffle 302 is to limit the upward movement of the transverse movement adjustment switch 301 from above, thereby preventing the transverse movement adjustment switch 301 from moving out of position along the transverse movement switching channel 502.

[0046] As Figure 8 shown in the figure, the front-back adjustment component 3 further includes a second spring 303. The second spring 303 is disposed in the transverse movement switching channel 502, and its two ends are respectively abutted against the transverse movement adjustment switch 301 and the baffle 302. In the initial state, the second spring 303 supports the transverse movement adjustment switch 301 so that the latch 301a at its upper end is self-inserted into and engaged with the transverse movement gear slot 102 on the support seat 1, preventing accidental detachment. And when the latch 301a is driven by the transverse movement adjustment switch 301 to move away from the transverse movement gear slot 102, the second spring 303 is compressed and generates elastic potential energy, preparing for the reset after the control applied to the transverse movement adjustment switch 301 is removed. Thus, when the latch 301a disengages from the current transverse movement gear slot 102 and during the forward and backward movement of the seat 5, the latch 301a abuts against a part of the support seat 1 between any two transverse movement gear slots 102 under the action of the second spring 303 and automatically engages when the next transverse movement gear slot 102 is opposite to the second communication channel 503, completing the fixation of the seat 5, thereby eliminating the need to repeatedly control the movement of the transverse movement adjustment switch 301, streamlining the process of adjusting the front-back position of the seat 5 and making the front-back position adjustment more convenient.

[0047] As Figure 11 and Figure 12 shown in the figure, a first hinge interface 404 is provided at the front end of the frame 4, and a hinge block 12 is provided on the front fork 6. The hinge block 12 is rotatably connected in the first hinge interface 404. Thus, by rotating the hinge block 12 in the first hinge interface 404, the front fork 6 drives the front wheel 10 to swing, changing the direction when the child is riding. An installation groove 405 is provided at the rear end of the frame 4, and the push rod 9 is rotatably connected in the installation groove 405. And an installation channel 406 is provided inside the frame 4. The installation channel 406 communicates with the first hinge interface 404 and the installation groove 405. A pull wire 13 is passed through the installation channel 406, and both ends of the pull wire 13 are connected to the hinge block 12 and the push rod 9 respectively. It should be noted that the pull wire 13 is kept in a taut state. When the push rod 9 rotates, the pull wire 13 is wound, and the hinge block 12 can be dragged to rotate, thereby driving the front wheel 10 to swing through the front fork 6. The above settings facilitate the parent to control the driving direction of the children's vehicle through the push rod 9 when the child is riding, so that the child can learn and enjoy the fun of riding in a safe and comfortable environment.

[0048] As Figure 1 and Figure 17As shown in the figure, the rear fork 7 includes a left arm 701 and a right arm 702. The front ends of the left arm 701 and the right arm 702 are rotatably connected to the frame 4, and the rear wheel 11 is rotatably connected to the rear ends of the left arm 701 and the right arm 702. It can be understood that two sets of rear wheels 11 are configured in the present utility model. In the normal state, the children's vehicle of the present utility model is used as a tricycle for children to ride. In addition, the left arm 701 and the right arm 702 of the rear fork 7 can be rotated towards each other for folding, so that the two sets of rear wheels 11 are closed together, thereby serving as the overall rear wheel 11, enabling the children's vehicle of the present utility model to be used as a two-wheel balance bike, providing more riding options for children and enriching the usage functions of the children's vehicle of the present utility model. At the same time, when used as a two-wheel balance bike, the volume of the children's vehicle of the present utility model is correspondingly reduced, thus facilitating storage.

[0049] As Figures 13 to 16As shown, a second hinge opening 601 is provided at the top of the front fork 6, the bottom of the handlebar 8 is rotatably connected to the second hinge opening 601, an outer slideway 602 is provided on the outer wall of the front fork 6, and the outer slideway 602 communicates with the second hinge opening 601. In the present utility model, the outer slideway 602 is located on both sides of the second hinge opening 601, that is to say, there are two groups of outer slideways 602. An inner slideway 801 is provided on the handlebar 8, and the inner slideway 801 faces the outer slideway 602. It can be understood that there are also two groups of inner slideways 801, and they correspond to the outer slideways 602 one by one. A rotation prevention gear 14 is slidably fitted between the outer slideway 602 and the inner slideway 801, that is to say, the shapes of the outer slideway 602 and the inner slideway 801 match the outer shape of the rotation prevention gear 14, so that the rotation prevention gear 14 can slide into the outer slideway 602, the inner slideway 801 or reach between the outer slideway 602 and the inner slideway 801. It can be understood that this makes the cross-sectional shapes of the outer slideway 602 and the inner slideway 801 non-circular. When the rotation prevention gear 14 is located between the outer slideway 602 and the inner slideway 801, the front fork 6 and the handlebar 8 where the outer slideway 602 and the inner slideway 801 are located cannot rotate relative to each other, that is, they cannot be folded by rotation. At this time, the handlebar 8 remains in the unfolded state and can be controlled by children for riding. In addition, the depth of the inner slideway 801 matches or is greater than the width of the rotation prevention gear 14 to ensure that the rotation prevention gear 14 can completely disengage from the inner slideway 801 and the outer slideway 602. A folding button 15 is slidably fitted in the outer slideway 602, and a gear limiting member 16 is also slidably fixed in the outer slideway 602. The gear limiting member 16 is located between the folding button 15 and the rotation prevention gear 14, that is, the gear limiting member 16 restricts the rotation prevention gear 14 on the side close to the inner slideway 801, thereby preventing the rotation prevention gear 14 from disengaging from the outer slideway 602. A push block 1501 is formed on the folding button 15, and a top push groove 1601 is provided on the gear limiting member 16. The push block 1501 passes through the top push groove 1601 and abuts against the rotation prevention gear 14. A third spring 17 is provided in the inner slideway 801, and both ends of the third spring 17 abut against the rotation prevention gear 14 and the inner slideway 801. The third spring 17 supports the rotation prevention gear 14 in the initial state so that it can be kept between the outer slideway 602 and the inner slideway 801. When the folding button 15 is pressed to drive the rotation prevention gear 14 to move towards the inner slideway 801, the third spring 17 is compressed and generates elastic potential energy to prepare for driving the rotation prevention gear 14 to reset. The folding button 15 pushes the rotation prevention gear 14 until the rotation prevention gear 14 completely enters the inner slideway 801. At this time, the handlebar 8 can be folded, reducing the volume of the children's bicycle and making it more convenient for storage.

[0050] Combined Figures 1 to 17As shown, when the children's bicycle of the present utility model is for children to ride, its seat 5 can be adjusted in height and in two directions, front and back. When adjusting the height, first push the height adjustment switch 202 of the height adjustment component 2 to move, so that it drives the insertion block 201 to disengage from the docking with the lifting gear slot 101 of the support base 1. At this time, the first spring 203 is compressed, and the support base 1 can be controlled to slide up and down. During this process, the insertion block 201 abuts against the part of the support base 1 between any two lifting gear slots 101 under the action of the first spring 203, and automatically inserts when it is opposite to the next lifting gear slot 101, completing the height adjustment of the seat 5. When adjusting the front and back position of the seat 5, then press the transverse movement adjustment switch 301 of the transverse movement adjustment component, so that the latch 301a disengages from the transverse movement gear slot 102. At this time, the second spring 303 is compressed, and the seat 5 can be controlled to move relative to the support base 1 to adjust the front and back position. The second spring 303 is compressed to generate elastic potential energy. Thus, when the latch 301a disengages from the current transverse movement gear slot 102 and the seat 5 moves back and forth, the latch 301a abuts against the part of the support base 1 between any two transverse movement gear slots 102 under the action of the second spring 303, and automatically inserts when the next transverse movement gear slot 102 is opposite to the second communication channel 503, completing the front and back position adjustment of the seat 5. When the child is riding, the parent can also turn the push rod 9. By rotating the push rod 9, the cable 13 is wound, so as to drag the hinge block 12 to rotate the hinge block 12, and drive the front wheel 10 to swing through the front fork 6 to control the riding direction. In addition, the rear fork 7 and the handlebar 8 can also be folded. The left arm 701 and the right arm 702 of the rear fork 7 can rotate towards each other for folding, so that the two groups of rear wheels 11 are closed together. At this time, it can not only be used as a two-wheeled balance bike for children, but also reduce the overall volume. When the handlebar 8 is folded, just press the folding button 15. The folding button 15 drives the anti-rotation gear 14 to completely enter the inner slideway 801 of the handlebar 8, and then the handlebar 8 can be rotated to further reduce the overall volume of the children's bicycle and be better convenient for storage.

[0051] The above embodiments and the descriptions in the specification only illustrate the principles and the best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A children's bicycle with a bidirectionally adjustable seat, comprising a frame (4), a seat (5), a front fork (6), a rear fork (7), a handlebar (8), a push rod (9), a front wheel (10) and a rear wheel (11), characterized in that: It also includes a support seat (1), a height adjustment component (2) and a front-rear adjustment component (3); a lifting channel (401) is provided in the frame (4); the bottom of the support seat (1) is slidably engaged in the lifting channel (401); a transverse channel (501) is provided at the bottom of the seat (5); the top of the support seat (1) is slidably engaged in the transverse channel (501); the height adjustment component (2) is movably connected between the frame (4) and the support seat (1); and the front-rear adjustment component (3) is movably connected between the seat (5) and the support seat (1).

2. The baby stroller with a two-way adjustable seat according to claim 1, characterized in that: The height adjustment assembly (2) comprises a plug-in block (201); a lifting switch channel (402) is provided in the frame (4); the lifting switch channel (402) is located on one side of the lifting channel (401) and is connected; the plug-in block (201) is slidably matched in the lifting switch channel (402); a lifting gear slot (101) is provided on the support seat (1); and the plug-in block (201) is inserted into the lifting gear slot (101).

3. The baby stroller with a two-way adjustable seat according to claim 2, characterized in that: The height adjustment assembly (2) further comprises a height adjustment switch (202); a first connection channel (403) is provided on the outer wall of the frame (4); the first connection channel (403) is connected to the lifting switch channel (402); one end of the height adjustment switch (202) passes through the first connection channel (403) to be connected to the plug-in block (201) and is slidably matched with the first connection channel (403).

4. The baby stroller with a two-way adjustable seat according to claim 3, characterized in that: The height adjustment assembly (2) further comprises a first spring (203), wherein the first spring (203) is arranged in the lifting and switching channel (402), and two ends of the first spring (203) respectively abut against the plug-in block (201) and the inner wall of the lifting and switching channel (402).

5. The baby stroller with a bidirectionally adjustable seat according to any one of claims 1 to 4, characterized in that: The front and rear adjustment assembly (3) comprises a transverse shift adjustment switch (301), a transverse shift switching channel (502) and a second connecting channel (503) are provided in the seat (5), the transverse shift switching channel (502) is connected with the bottom of the seat (5), the upper end of the transverse shift adjustment switch (301) is slidably matched with the transverse shift switching channel (502), a transverse shift gear slot (102) is provided on the support seat (1), the second connecting channel (503) is opposite to the transverse shift gear slot (102), and a card block (301a) is formed at the upper end of the transverse shift adjustment switch (301), and the card block (301a) passes through the second connecting channel (503) and is plugged into the transverse shift gear slot (102).

6. The baby stroller with a two-way adjustable seat according to claim 5, characterized in that: The front-rear adjustment assembly (3) further comprises a baffle (302), wherein the baffle (302) is arranged inside the seat (5) and opposite to the transverse shift switching channel (502).

7. The baby stroller with a two-way adjustable seat according to claim 6, characterized in that: The front-rear adjustment component (3) further comprises a second spring (303), which is arranged in the transverse shift switching channel (502), and whose two ends are respectively matched with the transverse shift adjustment switch (301) and the baffle (302).

8. A baby stroller with a bidirectionally adjustable seat according to any one of claims 1, 2, 3, 4, 6 or 7, characterized in that: A first hinge port (404) is provided at the front end of the frame (4), a hinge block (12) is provided on the front fork (6), the hinge block (12) is rotatably connected to the first hinge port (404), a mounting groove (405) is provided at the rear end of the frame (4), the push rod (9) is rotatably connected to the mounting groove (405), and a mounting channel (406) is provided inside the frame (4), the mounting channel (406) is communicated with the first hinge port (404) and the mounting groove (405), a pull wire (13) is passed through the mounting channel (406), and the two ends of the pull wire (13) are respectively connected to the hinge block (12) and the push rod (9).

9. The baby stroller with a two-way adjustable seat according to claim 8, characterized in that: The rear fork (7) comprises a left arm (701) and a right arm (702), the front ends of the left arm (701) and the right arm (702) are rotatably connected to the frame (4), and the rear wheel (11) is rotatably connected to the rear ends of the left arm (701) and the right arm (702).

10. A baby stroller with a bidirectionally adjustable seat according to any one of claims 1, 2, 3, 4, 6, 7 or 9, characterized in that: The top of the front fork (6) is provided with a second hinge joint (601), the bottom of the handlebar (8) is rotatably connected to the second hinge joint (601), an outer slideway (602) is provided on the outer wall of the front fork (6), the outer slideway (602) is communicated with the second hinge joint (601), an inner slideway (801) is provided on the handlebar (8), the inner slideway (801) is opposite to the outer slideway (602), a stop gear (14) is slidably matched between the outer slideway (602) and the inner slideway (801), and a folding button (15) is slidably matched in the outer slideway (602). ), a gear limiter (16) is also fixedly provided in the outer slideway (602), the gear limiter (16) is located between the folding button (15) and the stop gear (14), a push block (1501) is formed on the folding button (15), a push groove (1601) is provided on the gear limiter (16), the push block (1501) passes through the push groove (1601) and abuts against the stop gear (14), a third spring (17) is provided in the inner slideway (801), and two ends of the third spring (17) abut against the stop gear (14) and the inner slideway (801).

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