CN114056469A

CN114056469A - Children hand buggy

Info

Publication number: CN114056469A
Application number: CN202111343343.4A
Authority: CN
Inventors: 崔晓翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-13
Filing date: 2021-11-13
Publication date: 2022-02-18

Abstract

The invention discloses a hand buggy for children, which comprises a frame, a saddle, a front wheel assembly, a rear wheel assembly and a push-pull transmission mechanism, wherein the push-pull transmission mechanism comprises a handle, a driving assembly and a reversing assembly, the middle part of the handle is rotatably arranged on the frame, the driving assembly is arranged on the frame in a sliding manner along the advancing direction, the reversing assembly is connected between the driving assembly and the rear wheel assembly, when the push-pull handle moves in a reciprocating manner, the handle drives the driving assembly to move in a reciprocating manner along the advancing direction, two driving forces in opposite directions are generated when the driving assembly moves in a reciprocating manner, and the reversing assembly converts the two driving forces into power for driving the rear wheel assembly to advance in the same direction. The invention can drive the bicycle to move forward by pushing and pulling the handle back and forth with hands, controls the steering of the bicycle with feet, combines the hands and the feet, can meet the requirement of children on motion, has high enough safety and improves the interestingness of the children bicycle.

Description

Children hand buggy

Technical Field

The invention relates to a baby carrier, in particular to a child hand buggy which provides forward power through reciprocating push-pull.

Background

Children need to develop physical and mental balance, besides education, children toys can also enable bodies to move, intelligence is inspired, and the children toys not only can attract children, but also are interesting, fun and safe. At present, the baby carrier is a large class of children toys, and comprises a baby bicycle, a baby stroller, a baby walker, a child balance car, a child tricycle, a child electric car and the like. The children balancing vehicle is designed for infants to exercise the balancing ability of the infants, the infants need to continuously pedal the ground with feet to provide sliding power, and the children balancing vehicle is a walking-replacing, sports and entertainment tool suitable for the infants of 2-5 years old, so that the infants can enjoy sports better. Although the balance car for children can meet certain child motion functions, the safety is poor, and children often fall down or fall into injury, so that a child car which meets the requirements of child motion and has high enough safety and is interesting needs to be developed and designed.

Disclosure of Invention

In order to solve the technical problems, the invention provides the child hand buggy, a child can stably sit on a seat, the hand is used for pushing and pulling the cart to move forward in a reciprocating manner, the turning of the cart is controlled by feet, and the hand buggy and the feet are used together, so that the requirement of the child on motion can be met, the child buggy has high enough safety, and the interestingness of the child buggy is improved.

The technical scheme of the invention is realized as follows:

a hand buggy for children comprises a frame and a saddle, wherein the front part of the frame is provided with a front wheel component capable of steering, the rear part of the frame is provided with a rear wheel component used for keeping the frame balanced, the saddle is arranged at the top part of the frame, the child hand buggy also comprises a push-pull transmission mechanism, the push-pull transmission mechanism comprises a handle, a driving component and a reversing component, the middle part of the handle is rotatably arranged on the frame at a position close to the front wheel assembly, the driving assembly is arranged on the frame in a sliding manner along the advancing direction, the reversing component is connected between the driving component and the rear wheel component, when the pull handle is pushed and pulled to move in a reciprocating way, the handle drives the driving component to reciprocate along the advancing direction, two driving forces with opposite directions are generated when the driving component reciprocates, the reversing assembly converts the two driving forces into power which drives the rear wheel assembly to move forwards in the same direction.

Furthermore, one end of the handle is rotatably connected with one end of a connecting rod, and the other end of the connecting rod is rotatably connected with the driving component; or one end of the handle is fixedly connected with a cylindrical pin, the driving assembly is provided with a vertically arranged sliding groove, and the cylindrical pin is arranged in the sliding groove in a sliding mode.

Furthermore, the driving assembly comprises a rack, a first transmission gear and a second transmission gear, the rack is arranged on the frame in a sliding mode along the traveling direction, the first transmission gear is arranged on the frame in a rotating mode through a first shaft, and the first transmission gear is located on the upper side of the rack and is in meshing transmission with the rack; the second transmission gear is rotatably arranged on the frame through a second shaft, the second transmission gear is positioned on the lower side of the rack and is in meshed transmission with the rack, and the other end of the connecting rod is rotatably connected with one end of the rack or the sliding groove is arranged at one end of the rack.

Furthermore, the child hand buggy also comprises a first guide assembly, the first guide assembly comprises a first guide shell and a plurality of guide wheels, and two ends of the first guide shell are opened; the frame comprises a horizontal part extending along the traveling direction, the first guide shell is sleeved on the horizontal part, the plurality of guide wheels are arranged in the guide shell and divided into two groups, one group is arranged on the upper side of the horizontal part, the other group is arranged on the lower side of the horizontal part, and the horizontal part is clamped between the two groups of guide wheels in a sliding manner; one end of the rack is fixedly connected with the first guide shell.

Furthermore, the child hand buggy also comprises a second guide assembly, the second guide assembly comprises a second guide shell and a plurality of guide columns, and two ends of the second guide shell are opened; the second guide shell is arranged on the frame, the rack penetrates through the second guide shell, the guide posts are arranged in the second guide shell and divided into two groups, one group is arranged on the left side of the rack, the other group is arranged on the right side of the rack, and the rack is clamped between the two groups of guide posts in a sliding mode.

Furthermore, the reversing assembly comprises a first reversing gear, a second reversing gear and a third reversing gear, the first reversing gear is connected to the first shaft in a unidirectional rotation manner, the second reversing gear is connected to the second shaft in a unidirectional rotation manner, the unidirectional rotation directions of the first reversing gear and the second reversing gear are opposite, and the first reversing gear and the second reversing gear are jointly meshed with each other and are driven to the third reversing gear and are positioned on two sides of the third reversing gear; the third reversing gear outputs power to the rear wheel assembly.

Furthermore, the rear wheel assembly comprises two rear wheels and a rear wheel shaft connected between the two rear wheels, the third reversing gear is fixedly arranged on the rear wheel shaft, and the rear wheel shaft is rotatably arranged on the frame; or the rear wheel assembly comprises two rear wheels and a rear wheel shaft connected between the two rear wheels, the third reversing gear is rotatably arranged on the frame, the rear wheel shaft is rotatably arranged on the frame, and the third reversing gear is in transmission connection with the rear wheel shaft through a speed regulating gear set. Furthermore, the speed regulating gear set comprises a first speed regulating gear, a second speed regulating gear and a third speed regulating gear, the first speed regulating gear and the second speed regulating gear are coaxially arranged on the frame in a rotating mode, the first speed regulating gear is in meshing transmission connection with the third reversing gear, the second speed regulating gear is in meshing transmission connection with the third speed regulating gear, and the third speed regulating gear is fixedly connected with the rear wheel shaft.

Furthermore, the frame includes the gear seat, the gear seat includes two installation faces that set up relatively, the primary shaft with the secondary shaft is all installed in two through the bearing on the installation face, the rack first drive gear with second drive gear locates one the outside of installation face, first reversing gear second reversing gear third reversing gear with first speed governing gear locates another the outside of installation face, second speed governing gear and third speed governing gear locate two between the installation face.

Furthermore, the frame comprises a front fork seat and a curved beam, the front wheel assembly comprises a front wheel, a front wheel shaft and a front fork, the front wheel is rotatably arranged between two support arms of the front fork through the front wheel shaft, a body column of the front fork is rotatably arranged on the front fork seat, and the outer side of each support arm is provided with a pedal; the bent beam is arranged at a position close to the front fork seat, the bent beam is in an upward convex shape, and the middle part of the handle is rotatably arranged on the bent beam.

The invention has the beneficial effects that: the innovation has set up push-and-pull drive mechanism, push-and-pull drive mechanism includes the handle, drive assembly and switching-over subassembly, the handle middle part is rotated and is installed on the frame, the one end of handle rotates with the one end of connecting rod to be connected, the other end of connecting rod rotates with drive assembly to be connected, or, the sliding tray sliding connection that the one end of handle set up through cylindric lock and drive assembly (for example rack) one end, drive assembly slides along the direction of travel and locates on the frame, thus, the other end of push-and-pull handle, can drive assembly along the direction of travel reciprocating motion through connecting rod or cylindric lock, and drive assembly along the direction of travel reciprocating motion can produce the drive power of two opposite directions, the switching-over subassembly of setting can be with the drive power conversion of two opposite directions to syntropy drive, this power is used in the rear wheel subassembly, can drive the car and advance. This patent children hand buggy homoenergetic drives the car at the reciprocal in-process of push-and-pull. The front wheel subassembly of children's hand buggy sets up in the front portion of frame for the car provides and turns to, during the specific use, can turn to by children's biped control. The rear wheel assembly is arranged at the rear part of the frame and used for keeping the balance of the frame, and the seat is arranged at the top of the frame and can enable a child to sit on the seat stably. Therefore, the child stroller can meet the requirement of child motion, has high enough safety and improves the interestingness of the child stroller.

Drawings

Fig. 1 is a perspective view of a child hand buggy according to an embodiment of the invention;

fig. 2 is a perspective view of the stroller from another perspective according to an embodiment of the present invention;

FIG. 3 is a side view of the stroller (with a rear wheel omitted) according to an embodiment of the present invention;

FIG. 4 is a top view of the stroller of an embodiment of the present invention;

FIG. 5 is a rear view of the stroller of an embodiment of the present invention;

FIG. 6 is an assembly view from a perspective of the rear axle and drive and reversing elements of the present invention;

FIG. 7 is an assembly view of the rear axle and drive and reversing elements of the present invention from another perspective;

FIG. 8 is an assembly view of the rear axle and drive and reversing elements of the present invention from yet another perspective;

fig. 9 is a side view of a child buggy according to another embodiment of the invention (with the saddle omitted); the following description is made with reference to the accompanying drawings:

1-frame, 11-horizontal part, 12-gear seat, 121-mounting surface, 13-front fork seat, 14-camber beam, 2-saddle, 3-front wheel assembly, 31-front wheel, 32-front wheel shaft, 33-front fork, 331-arm, 34-pedal, 4-rear wheel assembly, 41-rear wheel, 42-rear wheel shaft, 43-speed gear set, 431-first speed gear, 432-second speed gear, 433-third speed gear, 5-push-pull transmission mechanism, 51-handle, 52-link, 53-drive assembly, 531-rack, 532-first transmission gear, 533-second transmission gear, 534-first shaft, 535-second shaft, 54-reversing assembly, 541-first reversing gear, 542-second reversing gear, 543-third reversing gear, 55-first guide assembly, 551-first guide shell, 552-guide wheel, 56-second guide assembly, 561-second guide shell, 562-guide post, 50-cylindrical pin, 530-sliding groove.

Detailed Description

In order to clearly understand the technical contents of the present invention, the following examples are given in detail for the purpose of better understanding the contents of the present invention and are not intended to limit the scope of the present invention. The components in the structures of the drawings of the embodiments are not necessarily to scale, and do not represent actual relative sizes of the structures in the embodiments.

Fig. 1 is a perspective view of a child hand buggy according to an embodiment of the invention; fig. 2 is a perspective view of the stroller from another perspective according to an embodiment of the present invention; FIG. 3 is a side view of the stroller (with a rear wheel omitted) according to an embodiment of the present invention; FIG. 4 is a top view of the stroller of an embodiment of the present invention; FIG. 5 is a rear view of the stroller of an embodiment of the present invention; FIG. 6 is an assembly view from a perspective of the rear axle and drive and reversing elements in accordance with one embodiment of the present invention; FIG. 7 is an assembly view from another perspective of the rear axle and drive and reversing elements in accordance with an embodiment of the present invention; FIG. 8 is an assembly view of the rear axle and drive and reversing elements from another perspective in accordance with an embodiment of the present invention; as a preferred embodiment, referring to fig. 1, 2, 3, 4 and 5, a child buggy comprises a frame 1 and a seat 2, the front part of the frame is provided with a front wheel component 3 capable of steering, the rear part of the frame is provided with a rear wheel component 4 for keeping the frame balanced, the seat is arranged on the top of the frame, the child hand buggy also comprises a push-pull transmission mechanism 5, the push-pull transmission mechanism comprises a handle 51, a connecting rod 52, a driving component 53 and a reversing component 54, the middle part of the handle is rotatably arranged on the frame at a position close to the front wheel assembly, the driving assembly is arranged on the frame in a sliding manner along the advancing direction, the reversing assembly is connected between the driving assembly and the rear wheel assembly, one end of the handle is rotatably connected with one end of the connecting rod, and the other end of the connecting rod is rotatably connected with the driving assembly; when the handle is pushed and pulled to reciprocate, the connecting rod drives the driving assembly to reciprocate along the advancing direction, two driving forces in opposite directions are generated when the driving assembly reciprocates, and the reversing assembly converts the two driving forces into power which drives the rear wheel assembly to advance forwards in the same direction.

Among the above-mentioned structure, because the handle middle part is rotated and is installed on the frame, the one end of handle rotates with the one end of connecting rod to be connected, the other end and the drive assembly of connecting rod rotate to be connected, and drive assembly slides along the direction of travel and locates on the frame, therefore, the other end of push-and-pull handle, can drive assembly along the direction of travel reciprocating motion through the connecting rod, and drive assembly can produce two opposite direction's drive power along the direction of travel reciprocating motion, the innovation of this patent lies in, the switching-over subassembly has been set up, drive power conversion that two opposite directions are opposite through the switching-over subassembly is syntropy driven power, this power acts on the rear wheel subassembly, can drive the car and advance. That is to say, this patent all can drive the car in the reciprocating process of push-and-pull. In the structure, the front wheel assembly is arranged at the front part of the frame and used for providing steering for the bicycle, and the steering can be controlled by two feet of a child when the bicycle is used specifically. The rear wheel assembly is arranged at the rear part of the frame and used for keeping the balance of the frame, and the seat is arranged at the top of the frame and can enable a child to sit on the seat stably. Therefore, the child stroller can meet the requirement of child motion, has high enough safety and improves the interestingness of the child stroller.

As a preferred embodiment, referring to fig. 2, 6, 7 and 8, in this embodiment, the driving assembly includes a rack 531, a first transmission gear 532 and a second transmission gear 533, the rack is slidably disposed on the frame along the traveling direction, the first transmission gear is rotatably disposed on the frame via a first shaft 55, and the first transmission gear is located on the upper side of the rack and is in mesh transmission with the rack; the second transmission gear is rotatably arranged on the frame through a second shaft 56, the second transmission gear is positioned on the lower side of the rack and is in meshed transmission with the rack, and the other end of the connecting rod is rotatably connected with one end of the rack. Therefore, the connecting rod drives the rack to reciprocate along the advancing direction, the rack can drive the first transmission gear and the second transmission gear to rotate, the first transmission gear is arranged on the first shaft, the second transmission gear is arranged on the second shaft, and the first shaft and the second shaft transmit driving force in the pushing process and the pulling process respectively, so that the driving force can be generated in the pushing and pulling process. Preferably, referring to fig. 1, the child buggy further comprises a first guide assembly 55, the first guide assembly comprises a first guide shell 551 and a plurality of guide wheels 552, and the first guide shell is open at two ends; the frame comprises a horizontal part 11 extending along the traveling direction, the first guide shell is sleeved on the horizontal part, the plurality of guide wheels are arranged in the guide shell and divided into two groups, one group is arranged on the upper side of the horizontal part, the other group is arranged on the lower side of the horizontal part, and the horizontal part is clamped between the two groups of guide wheels in a sliding manner; one end of the rack is fixedly connected with the first guide shell. Like this, establish first direction shell cover with first direction subassembly on the horizontal part of frame, divide a plurality of leading wheels into two sets of settings in first direction shell, the roll cooperation between a plurality of leading wheels of rethread first direction subassembly and the horizontal part of frame can realize the function of sliding guide, and this structure has combined the design of frame and drive assembly's cooperation, compares with the mode of chain formula transmission power in the prior art, and sound construction, and stability is good.

In order to optimize the performance of rack sliding, based on the same working principle, it is more preferable, referring to fig. 1, that the child buggy further comprises a second guide assembly 56, the second guide assembly comprises a second guide shell 561 and a plurality of guide posts 562, and the second guide shell is open at both ends; the second guide shell is arranged on the frame, the rack penetrates through the second guide shell, the guide posts are arranged in the second guide shell and divided into two groups, one group is arranged on the left side of the rack, the other group is arranged on the right side of the rack, and the rack is clamped between the two groups of guide posts in a sliding mode. Like this, rack and the rolling cooperation of a plurality of leading wheels of second direction subassembly can be spacing around the rack to the motion to the rack is led, has realized the balance of rack motion, makes the transmission of rack more smooth and easy.

As a preferred embodiment, referring to fig. 6, 7 and 8, in this embodiment, the reversing assembly includes a first reversing gear 541, a second reversing gear 542 and a third reversing gear 543, the first reversing gear is connected to the first shaft in a unidirectional rotation manner, the second reversing gear is connected to the second shaft in a unidirectional rotation manner, the first reversing gear and the second reversing gear have opposite unidirectional rotation directions, and the first reversing gear and the second reversing gear are engaged with and driven by the third reversing gear and located on both sides of the third reversing gear; the third reversing gear outputs power to the rear wheel assembly. Therefore, the first reversing gear is arranged on the first shaft in a unidirectional rotation mode, the second reversing gear is arranged on the second shaft in a unidirectional rotation mode, the first reversing gear and the second reversing gear are meshed and transmitted to two sides of the third reversing gear together, the third reversing gear can be driven to rotate along the same square in the process of pushing and pulling the handle, for example, the first reversing gear rotates clockwise and drives the third reversing gear to rotate anticlockwise in the process of pushing and pulling the handle, and at the moment, the second reversing gear rotates unidirectionally and idles and does not drive the third reversing gear; similarly, in the process of pulling the handle, due to the unidirectional rotation of the first reversing gear, the first reversing gear idles and does not drive the third reversing gear, and the second reversing gear rotates clockwise and drives the third reversing gear to rotate anticlockwise, so that the reversing assembly can convert two opposite driving forces into power which drives the rear wheel assembly to move forwards in the same direction. The unidirectional rotation structure is the prior art, for example, a unidirectional bearing, a flywheel, a ratchet wheel, etc. may be adopted, and will not be described herein again. The rear wheel assembly is disposed at the rear of the frame for balancing the frame and transmitting the driving force, and as a preferred embodiment, the rear wheel assembly includes two rear wheels 41 and a rear wheel axle 42 connected between the two rear wheels, the third reversing gear is fixedly disposed on the rear wheel axle, and the rear wheel axle is rotatably disposed on the frame. Preferably, the rear wheel rotates in one direction (such as a one-way bearing, a flywheel, a ratchet wheel and the like) and is connected with the rear wheel shaft, so that the front movement can be realized. The rear wheel assembly is also a common structure of the prior bicycle, children tricycle and the like, and is not described in detail herein. In this embodiment, the main point is that the third reversing gear is fixedly connected with the rear wheel shaft, and the third reversing gear directly drives the rear wheel shaft and drives the whole vehicle to move forward. The gear ratio between the third reversing gear and the first reversing gear and the second reversing gear can be set according to requirements so as to achieve the purpose of speed change.

As a more preferable embodiment, referring to fig. 2, in this embodiment, the rear wheel assembly includes two rear wheels 41 and a rear wheel axle 42 connected between the two rear wheels, the third reversing gear is rotatably disposed on the frame, the rear wheel axle is rotatably disposed on the frame, and the third reversing gear is in transmission connection with the rear wheel axle through a speed-adjusting gear set 43. Therefore, the rear wheel shaft is in transmission connection with the third reversing gear through the speed regulating gear set, and different gear ratios can be set. Therefore, the first reversing gear and the second reversing gear rotate for one circle to drive the third reversing gear to rotate for two circles, and the third reversing gear can rotate for more circles through the speed regulating gear set. Thereby the driving of the bicycle is more labor-saving and portable.

The speed-regulating gear set can be provided with one, two or three speed-regulating gears in principle according to needs, preferably, in this embodiment, the speed-regulating gear set comprises a first speed-regulating gear 431, a second speed-regulating gear 432 and a third speed-regulating gear 433, the first speed-regulating gear and the second speed-regulating gear are coaxially and rotatably arranged on the frame, the first speed-regulating gear is in meshing transmission connection with the third reversing gear, the second speed-regulating gear is in meshing transmission connection with the third speed-regulating gear, and the third speed-regulating gear is fixedly connected with the rear wheel axle. The first speed regulating gear and the second speed regulating gear are coaxially arranged, and the position of power output is changed while power is transmitted, so that the rear wheel shaft can be better arranged, for example, two rear wheels are in bilateral symmetry. The third speed regulating gear is fixedly connected with the rear wheel shaft and used for realizing the transmission of power to the rear wheel shaft, the tooth number of the third speed regulating gear can be different from that of the first speed regulating gear and that of the second speed regulating gear, for example, the diameter of the first speed regulating gear and that of the second speed regulating gear are larger than that of the third speed regulating gear and smaller than that of the third reversing gear.

For better layout of a plurality of gears, preferably, the frame includes gear seat 12, gear seat includes two installation faces 121 that set up relatively, the first axle with the second axle is all installed in two through the bearing on the installation face, the rack first drive gear with second drive gear locates one the outside of installation face, first reversing gear second reversing gear third reversing gear with first speed governing gear locates another the outside of installation face, second speed governing gear and third speed governing gear locate two between the installation face. Thus, more reasonable layout of the gears on the gear seat is realized.

The front wheel assembly is arranged at the front part of the frame for providing steering for the vehicle, as a preferred embodiment, referring to fig. 1, the frame comprises a front fork seat 13 and a curved beam 14, the front wheel assembly comprises a front wheel 31, a front wheel shaft 32 and a front fork 33, the front wheel is rotatably arranged between two support arms 331 of the front fork through the front wheel shaft, a body column of the front fork is rotatably arranged on the front fork seat, and the outer side of each support arm is provided with a pedal 34; the bent beam is arranged at a position close to the front fork seat, the bent beam is in an upward convex shape, and the middle part of the handle is rotatably arranged on the bent beam. Therefore, the front fork and the front fork seat are connected in a rotating mode to achieve the steering function, the front wheel is installed between the two support arms through the front wheel shaft in a rotating mode to achieve the rotating function of the front wheel, the front wheel is arranged between the two support arms in a rotating mode, the front wheel is arranged between the two support arms in a conventional mode in the prior art, in the embodiment, the key point is that the pedals are arranged on the outer sides of the support arms, and a user can control the pedals through double feet to achieve the steering control function. In addition, a bent beam is further arranged and is arranged close to the front fork, so that the bent beam is conveniently and rotatably connected with the handle. The handle is arranged close to the front fork and is controlled by operation.

The action principle of the child hand buggy is as follows:

the user takes on the saddle, two barres of handle are held to both hands, both feet are placed on two steps, when advancing, pull the handle backward, the handle rotates, the bottom of handle moves forward, and then drive the connecting rod and move forward, the connecting rod then drives the rack and move forward, the rack and then drives first drive gear and second drive gear and rotate to opposite direction, for example, first drive gear anticlockwise rotation, second drive gear clockwise rotation simultaneously, first drive gear gives first switching-over gear through first axle transmission power, second drive gear gives second switching-over gear through second axle transmission power, assume here that second switching-over gear is idle running, first switching-over gear drives third switching-over gear clockwise rotation. The third reversing gear further drives the first speed regulating gear to rotate anticlockwise, the second speed regulating gear and the first speed regulating gear rotate synchronously, the second speed regulating gear further drives the third speed regulating gear to rotate clockwise, the third speed regulating gear further drives the rear wheel shaft to rotate, and the rear wheel shaft further drives the two rear wheels to rotate, so that the function of forward advancing is realized.

Similarly, when the handle is pushed forwards, the handle rotates, the bottom end of the handle moves backwards, and then the connecting rod is driven to move backwards, the connecting rod further drives the rack to move backwards, the rack further drives the first transmission gear and the second transmission gear to rotate in opposite directions, at the moment, the first transmission gear rotates clockwise, meanwhile, the second transmission gear rotates anticlockwise, the first transmission gear transmits power to the first reversing gear through the first shaft, the second transmission gear transmits power to the second reversing gear through the second shaft, at the moment, the first reversing gear idles, and the second reversing gear is located on the other side of the third reversing gear, so that the second reversing gear still drives the third reversing gear to rotate clockwise. The third reversing gear further drives the first speed regulating gear to rotate anticlockwise, the second speed regulating gear and the first speed regulating gear rotate synchronously, the second speed regulating gear further drives the third speed regulating gear to rotate clockwise, the third speed regulating gear further drives the rear wheel shaft to rotate, and the rear wheel shaft further drives the two rear wheels to rotate, so that the function of forward advancing is realized. When the steering is needed, the front fork is driven by two feet, and then the rotating function is realized.

As another preferred embodiment, referring to fig. 9, a child buggy comprises a frame 1 and a seat 2, the front part of the frame is provided with a front wheel component 3 capable of steering, the rear part of the frame is provided with a rear wheel component 4 for keeping the frame balanced, the seat is arranged on the top of the frame, the child hand buggy also comprises a push-pull transmission mechanism 5, the push-pull transmission mechanism comprises a handle 51, a driving component 53 and a reversing component 54, the middle part of the handle is rotatably arranged on the frame at a position close to the front wheel component, the driving component is arranged on the frame in a sliding manner along the traveling direction, the reversing component is connected between the driving component and the rear wheel component, one end of the handle is fixedly connected with a cylindrical pin 50, the driving assembly is provided with a vertically arranged sliding groove 530, and the cylindrical pin is slidably arranged in the sliding groove. When the handle is pushed and pulled to reciprocate, the handle drives the driving assembly to reciprocate along the advancing direction through the cylindrical pin, the driving assembly generates two driving forces with opposite directions when reciprocating, and the reversing assembly converts the two driving forces into power which drives the rear wheel assembly to advance forwards in the same direction.

In this embodiment, the specific structures of the frame 1, the seat 2, the front wheel assembly 3, the rear wheel assembly 4, and the pull handle 51, the driving assembly 53, and the reversing assembly 54 of the push-pull transmission mechanism 5 are all the same as those in the above-mentioned embodiment, except that a sliding slot 530 is vertically disposed at one end of the rack of the driving assembly, the pull handle is engaged with the sliding slot through a cylindrical pin, and when the pull handle rotates, the cylindrical pin moves in the sliding slot, so as to drive the rack to move along the traveling direction.

In conclusion, the child hand buggy provided by the invention can enable a child to stably sit on the seat, push and pull the buggy forward by hands in a reciprocating manner, control the buggy to turn by feet, and use hands and feet simultaneously, so that the requirements of child motion can be met, the safety is high enough, and the interestingness of the buggy is improved.

The above embodiments have been described in detail with reference to the accompanying drawings. Those skilled in the art can make various modifications and changes to the above embodiments without departing from the spirit of the invention, and the scope of the invention is covered thereby.

Claims

1. The utility model provides a children's hand buggy, includes frame (1) and saddle (2), the front portion of frame is provided with front wheel subassembly (3) that can turn to, the rear portion of frame is provided with and is used for making frame keep balance's rear wheel subassembly (4), the saddle install in the top of frame, its characterized in that: the child hand buggy further comprises a push-pull transmission mechanism (5), the push-pull transmission mechanism comprises a handle (51), a driving assembly (53) and a reversing assembly (54), the middle of the handle is rotatably installed on the frame at a position close to the front wheel assembly, the driving assembly is arranged on the frame in a sliding mode along the advancing direction, the reversing assembly is connected between the driving assembly and the rear wheel assembly, when the handle is pushed and pulled to reciprocate, the handle drives the driving assembly to reciprocate along the advancing direction, two driving forces in opposite directions are generated when the driving assembly reciprocates, and the reversing assembly converts the two driving forces into power for driving the rear wheel assembly to advance forwards in the same direction.

2. The child cart of claim 1, wherein: one end of the handle is rotatably connected with one end of a connecting rod (52), and the other end of the connecting rod is rotatably connected with the driving component; or one end of the handle is fixedly connected with a cylindrical pin (50), the driving assembly is provided with a vertically arranged sliding groove (530), and the cylindrical pin is arranged in the sliding groove in a sliding mode.

3. The child cart of claim 2, wherein: the driving assembly comprises a rack (531), a first transmission gear (532) and a second transmission gear (533), the rack is arranged on the frame in a sliding mode along the advancing direction, the first transmission gear is arranged on the frame in a rotating mode through a first shaft (534), and the first transmission gear is located on the upper side of the rack and is in meshing transmission with the rack; the second transmission gear is rotatably arranged on the frame through a second shaft (535), the second transmission gear is positioned at the lower side of the rack and is in meshed transmission with the rack, and the other end of the connecting rod is rotatably connected with one end of the rack or the sliding groove is arranged at one end of the rack.

4. The child cart of claim 3, wherein: the child buggy also comprises a first guide assembly (55) which comprises a first guide shell (551) and a plurality of guide wheels (552), wherein the first guide shell is open at two ends; the frame comprises a horizontal part (11) extending along the traveling direction, the first guide shell is sleeved on the horizontal part, the plurality of guide wheels are arranged in the guide shell and divided into two groups, one group is arranged on the upper side of the horizontal part, the other group is arranged on the lower side of the horizontal part, and the horizontal part is clamped between the two groups of guide wheels in a sliding manner; one end of the rack is fixedly connected with the first guide shell.

5. The child cart of claim 4, wherein: the child hand buggy also comprises a second guide assembly (56), the second guide assembly comprises a second guide shell (561) and a plurality of guide columns (562), and the two ends of the second guide shell are open; the second guide shell is arranged on the frame, the rack penetrates through the second guide shell, the guide posts are arranged in the second guide shell and divided into two groups, one group is arranged on the left side of the rack, the other group is arranged on the right side of the rack, and the rack is clamped between the two groups of guide posts in a sliding mode.

6. The child cart of claim 3, wherein: the reversing assembly comprises a first reversing gear (541), a second reversing gear (542) and a third reversing gear (543), the first reversing gear is connected to the first shaft in a unidirectional rotation mode, the second reversing gear is connected to the second shaft in a unidirectional rotation mode, the unidirectional rotation directions of the first reversing gear and the second reversing gear are opposite, and the first reversing gear and the second reversing gear are meshed with each other and are transmitted to the third reversing gear and located on two sides of the third reversing gear; the third reversing gear outputs power to the rear wheel assembly.

7. The child cart of claim 6, wherein: the rear wheel assembly comprises two rear wheels (41) and a rear wheel shaft (42) connected between the two rear wheels, the third reversing gear is fixedly arranged on the rear wheel shaft, and the rear wheel shaft is rotatably arranged on the frame; or the rear wheel assembly comprises two rear wheels (41) and a rear wheel shaft (42) connected between the two rear wheels, the third reversing gear is rotatably arranged on the frame, the rear wheel shaft is rotatably arranged on the frame, and the third reversing gear is in transmission connection with the rear wheel shaft through a speed regulating gear set (43).

8. The child cart of claim 7, wherein: the speed regulating gear set comprises a first speed regulating gear (431), a second speed regulating gear (432) and a third speed regulating gear (433), the first speed regulating gear and the second speed regulating gear are coaxially arranged on the frame in a rotating mode, the first speed regulating gear is in meshing transmission connection with the third reversing gear, the second speed regulating gear is in meshing transmission connection with the third speed regulating gear, and the third speed regulating gear is fixedly connected with the rear wheel shaft.

9. The child cart of claim 8, wherein: the frame includes gear seat (12), the gear seat is including two installation face (121) that set up relatively, the primary shaft with the secondary shaft all installs in two through the bearing on the installation face, the rack first drive gear with second drive gear locates one the outside of installation face, first reversing gear second reversing gear third reversing gear with another is located to first speed governing gear the outside of installation face, second speed governing gear and third speed governing gear locate two between the installation face.

10. The child cart of claim 1, wherein: the frame comprises a front fork seat (13) and a bent beam (14), the front wheel assembly comprises a front wheel (31), a front wheel shaft (32) and a front fork (33), the front wheel is rotatably arranged between two support arms (331) of the front fork through the front wheel shaft, a body column of the front fork is rotatably arranged on the front fork seat, and the outer side of each support arm is provided with a pedal (34); the bent beam is arranged at a position close to the front fork seat, the bent beam is in an upward convex shape, and the middle part of the handle is rotatably arranged on the bent beam.