CN111924032A

CN111924032A - Children tricycle

Info

Publication number: CN111924032A
Application number: CN202010985077.4A
Authority: CN
Inventors: 廖整辉
Original assignee: Zhongshan Xingshang Baby Product Co ltd
Current assignee: Zhongshan Xingshang Baby Product Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2020-11-13

Abstract

The invention discloses a child tricycle, which comprises a support frame, wherein the front end of the support frame is connected with a front support frame which can rotate around a first axis A relative to the front support frame, the front support frame is connected with a steering device, the steering device comprises a rotating frame which can rotate around a second axis B relative to the front support frame, the lower end of the rotating frame is provided with a front wheel assembly, the upper end of the rotating frame is connected with a steering handle, the rear end of the support frame is connected with a rear support frame, the rear support frame comprises a left support part and a right support part which are arranged on two sides of a symmetrical plane SP, the left support part is rotatably connected with the support frame around a third axis C, the left support part comprises a left rear leg and a left rear wheel arranged at the lower end of the left rear leg, the right support part is rotatably connected; a linkage mechanism which drives the front support frame to rotate around the first axis A relative to the support frame in the process that the rear support frame rotates relative to the support frame is arranged between the front support frame and the rear support frame. The folding chair has a simple structure and occupies small space after being folded.

Description

Children tricycle

[ technical field ] A method for producing a semiconductor device

The invention relates to a tricycle for children.

[ background of the invention ]

At present, three-wheeled bassinet becomes a common product used in the growth process of children. The three-wheeled bassinet on the market at present can be folded for convenient carrying or storage, but the three-wheeled bassinet on the market at present still has the problem of large volume after being folded, occupies large space and still has improved space.

The present invention is based on the above-described disadvantages.

[ summary of the invention ]

The invention aims to overcome the defects of the prior art and provides the child tricycle which is simple in structure, convenient to fold and operate and small in occupied space after being folded.

The invention is realized by the following technical scheme:

a child's tricycle having a vertical plane of symmetry SP and being movable from an extended position to a folded position, characterized in that: comprises a support frame 1 for supporting a seat, a front support frame 2 which can rotate around a first axis A relative to the support frame 1 is connected with the front end of the support frame 1, the front supporting frame 2 is connected with a steering device 3, the steering device 3 comprises a rotating frame 31 which can rotate around a second axis B relative to the front supporting frame 2, the lower end of the rotating frame 31 is provided with a front wheel assembly 32, the upper end of the rotating frame 31 is connected with a steering handle 33, the rear end of the support frame 1 is connected with a rear support frame 4, the rear support frame 4 comprises a left support part 41 and a right support part 42 which are arranged at the two sides of a symmetrical plane SP, the left support part 41 is rotatably connected with the supporting frame 1 around a third axis C, the left support part 41 comprises a left rear leg 411 and a left rear wheel 412 arranged at the lower end of the left rear leg 411, the right support part 42 is rotatably connected with the support frame 1 around a fourth axis D, and the right support part 42 comprises a right rear leg 421 and a right rear wheel 422 arranged at the lower end of the right rear leg 421;

and a linkage mechanism 5 which drives the front support frame 2 to rotate around the first axis A relative to the support frame 1 in the process that the rear support frame 4 rotates relative to the support frame 1 is also arranged between the front support frame 2 and the rear support frame 4.

The children tricycle is characterized in that: the third axis C is disposed at an acute angle with respect to the vertical symmetry plane SP, so that when the left rear leg 411 rotates forward around the third axis C, the left rear wheel 412 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP;

the fourth axis D is disposed at an acute angle with respect to the vertical symmetry plane SP, so that when the right rear leg 421 rotates forward around the fourth axis D, the right rear wheel 422 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP.

The children tricycle is characterized in that: the front supporting frame 2 is connected with the front end of the supporting frame 1 around the first axis A through a front rotating seat 21 in a rotating way, the linkage mechanism 5 comprises a linkage piece 51 arranged in the support frame 1 and capable of moving in the support frame 1, a left driving gear 52 which is matched with the linkage piece 51 for transmission and rotates around a third axis C, and a right driving gear 53 which is in matched transmission with the linkage piece 51 and rotates around a fourth axis D, the left driving gear 52 is connected with the left rear leg 411 and can rotate around a third axis C together with the upper end of the left rear leg 411, the right driving gear 53 is connected to the right rear leg 421 and can rotate about the fourth axis D together with the upper end of the right rear leg 421, a transmission member 54 is connected to the front rotary base 21 at a position deviating from the first axis a, one end of the transmission member 54 is rotatably connected to the front rotary base 21 around a fifth axis E, and the other end of the transmission member 54 is rotatably connected to the rotating portion 513 on the link member 51 around a sixth axis F.

The children tricycle is characterized in that: the linkage part 51 comprises a left transmission gear 511 and a right transmission gear 512 which are arranged in the support frame 1, the left transmission gear 511 is in meshing transmission with the left driving gear 52, the right transmission gear 512 is in meshing transmission with the right driving gear 53, the rotating part 513 is arranged between the left transmission gear 511 and the right transmission gear 512 and rotates along with the left transmission gear 511 and the right transmission gear 512, and the left transmission gear 511, the right transmission gear 512 and the rotating part 513 rotate around a seventh axis G.

The children tricycle is characterized in that: the left transmission gear 511, the right transmission gear 512, the left driving gear 52 and the right driving gear 53 are all helical gears.

The children tricycle is characterized in that: the front supporting frame 2 is connected with the front end of the supporting frame 1 around the first axis A through a front rotating seat 21 in a rotating way, the linkage mechanism 5 comprises a rotating part 513 which is rotatably arranged in the support frame 1 and can rotate along with the support frame 1 when the back support frame 4 rotates relative to the support frame 1, a transmission member 54 capable of pushing the front rotary seat 21 to rotate when the rotary part 513 rotates is arranged between the rotary part 513 and the front rotary seat 21, a locking device is arranged between the front supporting frame 2 and the supporting frame 1, the locking device comprises a sliding part 61 which is slidably arranged in the supporting frame, the front bracket 2 is provided with a first blocking part 211 which can be blocked or separated with the sliding part 61, the supporting frame 1 is further provided with a limiting member 62 which can be engaged with the second position-limiting portion 5131 of the rotating portion 513 when the sliding member 61 is engaged with the first position-limiting portion 211 and can be driven by the sliding member 61 to be disengaged from the second position-limiting portion 5131 when the sliding member 61 is disengaged from the first position-limiting portion 211.

The children tricycle is characterized in that: the front rotating seat 21 is provided with the first detent 211, the sliding element 61 includes a sliding block 611 slidably disposed in the support frame 1 and a connecting block 612 connected to the sliding block 611 and used for driving the limiting element 62 to disengage from the second detent 5131, the sliding block 611 is provided with a first cable 63 for pulling the sliding block 611 to slide and disengage from the first detent 211, and the support frame 1 is further provided with a return spring 64 for returning the sliding block 611.

The children tricycle is characterized in that: the connecting block 612 is provided with a strip-shaped hole 6121, the limiting part 62 comprises a limiting block 621 which is rotatably connected to the support frame 1 and is abutted against the second clamping position 5131, the limiting block 621 is provided with a bolt 622 which can extend into the strip-shaped hole 6121 and can move in the strip-shaped hole 6121, and when the connecting block 612 slides relative to the support frame 1, the inner wall of the strip-shaped hole 6121 abuts against the bolt 622 to drive the limiting block 621 to be separated from the second clamping position 5131.

The children tricycle is characterized in that: the support frame 1 is further rotatably connected with an unlocking assembly 7 capable of unlocking the locking device, the unlocking assembly 7 comprises a handle 71 which is rotatably connected to the support frame 1 and can pull the first inhaul cable 63 to enable the sliding block 621 to be separated from the first clamping position 211 when rotating relative to the support frame 1, and the handle 71 is further provided with a reset element 72 capable of driving the handle 71 to rotate relative to the support frame 1 to reset;

be equipped with accepting groove 11 on the support frame 1, still be equipped with on the support frame 1 and accepting groove 11 adjacent one side with communicating shrinkage pool 12 of accepting groove 11, be equipped with in the shrinkage pool 12 and can be in it gliding according to briquetting 13, handle 71 accept in accepting groove 11 and only when according to briquetting 13 by the back handle 71 just can be pulled up, the bottom surface of shrinkage pool 12 and according to still being equipped with between briquetting 13 and order about the elasticity reset 14 that presses briquetting 13 to reset.

The children tricycle is characterized in that: still be connected with handspike subassembly 8 on the support frame 1, be equipped with accommodating space 15 on the support frame 1, handspike subassembly 8 is including locating accommodating space 15 in and can be at the roating seat 81 of accommodating space 15 internal rotation, can dismantle on the roating seat 81 and be connected with push rod 82, be equipped with in the push rod 82 and fix the elastic fixing spare 821 on roating seat 81 with push rod 82, be equipped with the protruding 8211 of first arc on the elastic fixing spare 821, be equipped with the card hole 811 that can hold the protruding 8211 of first arc on roating seat 81, still be equipped with on the elastic fixing spare 821 and enable the protruding 8211 of second arc that breaks away from card hole 811 after pressing.

Compared with the prior art, the invention has the following advantages:

1. when the tricycle is folded, the left rear leg rotates forwards around the third axis to enable the left rear wheel to move from a position far away from the front wheel assembly to a position close to the front wheel assembly, the right rear leg rotates forwards around the fourth axis to enable the right rear wheel to move from a position far away from the front wheel assembly to a position close to the front wheel assembly, when the left rear leg and the right rear leg rotate, the left rear leg and the right rear leg push the linkage mechanism to move, and the linkage mechanism drives the front support frame to rotate upwards relative to the support frame around the first axis and close to the support frame, so that the tricycle for children is reduced in the height direction, the volume of the tricycle for children is small after the tricycle for children is folded, the tricycle for children is convenient to carry and store, and the rotation between the support frame and the front support frame is transmitted through the linkage mechanism, the structural.

2. According to the invention, the third axis and the vertical symmetry plane are arranged in an acute angle, when the left rear leg rotates forwards around the third axis, the left rear wheel can move from a position far away from the vertical symmetry plane to a position surface close to the symmetry plane, and simultaneously, the fourth axis and the vertical symmetry plane are also arranged in an acute angle.

3. When the locking device is unlocked, the left supporting part and the right supporting part rotate downwards under the action of self weight and approach to the front wheel assembly, the left supporting part and the right supporting part push the linkage mechanism while rotating, the linkage mechanism drives the front support frame to rotate upwards to approach the support frame, so that the locking device can be unlocked only by pulling and lifting the handle, and the whole tricycle can be folded, the unblock is simple and convenient, folds up simply, presses the briquetting and locking device to separate and cooperate and form children's tricycle's two latch mechanisms, can protect the handle, avoids the mistake to touch the handle and leads to children's three routes car folding.

[ description of the drawings ]

FIG. 1 is a perspective view of one of the child tricycles of the present invention;

FIG. 2 is one of the plan views of the child tricycle of the present invention;

FIG. 3 is a second plan view of the child tricycle of the present invention;

FIG. 4 is a second perspective view of the child tricycle of the present invention;

FIG. 5 is a plan view of the front stay and linkage mechanism of the children's tricycle of the present invention;

FIG. 6 is a perspective view of the front brace and linkage mechanism of the child tricycle of the present invention;

FIG. 7 is a cross-sectional view of the front brace and linkage mechanism of the child tricycle of the present invention;

FIG. 8 is an enlarged view of region H of FIG. 7;

FIG. 9 is a perspective view of one of the locking devices of the child tricycle of the present invention;

FIG. 10 is a second perspective view of the locking device of the child tricycle of the present invention;

FIG. 11 is a cross-sectional view of the child tricycle of the present invention;

FIG. 12 is a perspective view of a handle bar assembly of the child tricycle of the present invention;

FIG. 13 is an enlarged view of the area J in FIG. 12;

FIG. 14 is an enlarged view of area I of FIG. 11;

FIG. 15 is a perspective view of a steering apparatus in a child tricycle of the present invention;

FIG. 16 is one of the plan views of the child tricycle of the present invention when folded;

FIG. 17 is a second plan view of the child tricycle of the present invention shown folded;

fig. 18 is a perspective view of the child tricycle of the present invention when folded.

[ detailed description ] embodiments

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 18, the present invention provides a children tricycle, which has a vertical symmetry plane SP and can move from a unfolded position to a folded position, and comprises a support frame 1 for supporting a seat, wherein a front frame 2 capable of rotating around a first axis a relative to the support frame 1 is connected to the front frame 1 at the front end, a steering device 3 is connected to the front frame 2, the steering device 3 comprises a rotating frame 31 capable of rotating around a second axis B relative to the front frame 2, a front wheel assembly 32 is arranged at the lower end of the rotating frame 31, a steering handle 33 is connected to the upper end of the rotating frame 31, a rear frame 4 is connected to the rear end of the support frame 1, the rear frame 4 comprises a left support portion 41 and a right support portion 42 arranged at two sides of the symmetry plane SP, the left support portion 41 is rotatably connected to the support frame 1 around a third axis C, the left support portion 41 comprises a left rear leg 411 and a left rear wheel 412 arranged at, the right support part 42 is rotatably connected with the support frame 1 around a fourth axis D, and the right support part 42 comprises a right rear leg 421 and a right rear wheel 422 arranged at the lower end of the right rear leg 421;

as shown in fig. 6, a linkage mechanism 5 for driving the front support frame 2 to rotate around the first axis a relative to the support frame 1 in the process that the rear support frame 4 rotates relative to the support frame 1 is further arranged between the front support frame 2 and the rear support frame 4.

When the child tricycle is folded, the left rear leg 411 rotates forwards around the third axis C to enable the left rear wheel 412 to move from a position far away from the front wheel assembly 32 to a position close to the front wheel assembly 32, the right rear leg 421 rotates forwards around the fourth axis D to enable the right rear wheel 422 to move from a position far away from the front wheel assembly 32 to a position close to the front wheel assembly 32, when the left rear leg 411 and the right rear leg 421 rotate, the left rear leg 411 and the right rear leg 421 push the linkage mechanism 5 to move, the linkage mechanism 5 drives the front support frame 2 to rotate upwards around the first axis a relative to the support frame 2 and close to the support frame 2, and therefore the height direction of the child tricycle is reduced, the volume of the folded child tricycle is small, carrying and storage are convenient, and rotation between the support frame and the front support frame is transmitted through the linkage mechanism, the structural design is more compact, and transmission is more convenient.

As shown in fig. 3, the third axis C is disposed at an acute angle with respect to the vertical symmetry plane SP, so that when the left rear leg 411 rotates forward around the third axis C, the left rear wheel 412 can move from a position far from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP;

as shown in fig. 3, the fourth axis D is disposed at an acute angle with respect to the vertical symmetry plane SP, so that the right rear wheel 422 can move from a position away from the vertical symmetry plane SP to a position close to the vertical symmetry plane SP when the right rear leg 421 rotates forward around the fourth axis D.

Set up to be the acute angle between third axis C and the vertical symmetry plane SP on the children's tricycle, when left rear leg 411 rotated forward around third axis C, left rear wheel 412 can also move to being close to symmetry plane position SP from the position of keeping away from vertical symmetry plane SP, fourth axis D also is the acute angle setting with vertical symmetry plane SP simultaneously, when right rear leg 421 rotated forward around fourth axis D, right rear wheel 421 can also move to being close to symmetry plane position SP from the position of keeping away from vertical symmetry plane SP, and make children's tricycle go out can the size in the width direction reduce, the volume of children's tricycle after folding up reaches the minimizing, more portable and deposit.

As shown in fig. 1 to 6, the front support frame 2 is rotatably connected with the front end of the support frame 1 around the first axis a through the front rotating seat 21, the linkage mechanism 5 comprises a linkage piece 51 arranged in the support frame 1 and capable of moving in the support frame 1, a left driving gear 52 which is matched with the linkage piece 51 for transmission and rotates around a third axis C, and a right driving gear 53 which is in matched transmission with the linkage piece 51 and rotates around a fourth axis D, the left driving gear 52 is connected with the left rear leg 411 and can rotate around a third axis C together with the upper end of the left rear leg 411, the right driving gear 53 is connected to the right rear leg 421 and can rotate about the fourth axis D together with the upper end of the right rear leg 421, a transmission member 54 is connected to the front rotary base 21 at a position deviating from the first axis a, one end of the transmission member 54 is rotatably connected to the front rotary base 21 around a fifth axis E, and the other end of the transmission member 54 is rotatably connected to the rotating portion 513 on the link member 51 around a sixth axis F.

When the children tricycle is folded, the left rear leg 411 and the left driving gear 52 rotate around the third axis C, the right rear leg 421 and the right driving gear 53 rotate around the fourth axis D, in the process, the left driving gear 52 and the right driving gear 53 drive the linkage 51 to rotate, the linkage 51 drives the transmission piece 54 to move when rotating, and the transmission piece 54 pushes the front rotating seat 21 to rotate around the first axis a and approach the support frame 1.

As shown in fig. 4 to 7, the linkage 51 includes a left transmission gear 511 and a right transmission gear 512 which are arranged in the support frame 1, the left transmission gear 511 is in meshing transmission with the left driving gear 52, the right transmission gear 512 is in meshing transmission with the right driving gear 53, the rotating part 513 is arranged between the left transmission gear 511 and the right transmission gear 512 and rotates along with the left transmission gear 511 and the right transmission gear 512, and the left transmission gear 511, the right transmission gear 512 and the rotating part 513 rotate around the seventh axis G. The left and

right transmission gears

511 and 512 are driven by the left and

right driving gears

52 and 53 to make the rotating part 513 rotate, and when the rotating part 513 rotates, the transmission member 54 is pushed to make the front rotating base 21 rotate around the first axis a and move close to the supporting frame 1.

As shown in fig. 4 to 7, the left transmission gear 511, the right transmission gear 512, the left driving gear 52 and the right driving gear 53 are all helical gears.

As shown in fig. 8 to 10 and 18, a locking device is disposed between the front frame 2 and the support frame 1, the locking device includes a sliding member 61 slidably disposed in the support frame, the front frame 2 is provided with a first locking position 211 capable of engaging with or disengaging from the sliding member 61, and the support frame 1 is further provided with a limiting member 62 capable of engaging with a second locking position 5131 on the rotating portion 513 when the sliding member 61 is engaged with the first locking position 211 and being driven by the sliding member 61 to disengage from the second locking position 5131 when the sliding member 61 is disengaged from the first locking position 211.

As shown in fig. 8 to 10 and fig. 18, the front rotary seat 21 is provided with a first detent 211, the sliding element 61 includes a sliding block 611 slidably disposed in the support frame 1 and a connecting block 612 connected to the sliding block 611 and used for driving the limiting element 62 to disengage from the second detent 5131, the sliding block 611 is provided with a first cable 63 for pulling the sliding block 611 to slide and disengage from the first detent 211, the support frame 1 is further provided with a sliding groove 11 for accommodating the sliding block 611 to slide, and a return spring 64 for returning the sliding block 611 is further disposed between the sliding block 611 and an inner wall of the sliding groove 11.

When the child tricycle is folded, the locking device needs to be unlocked, the first cable 63 is pulled, the first cable 63 pulls the sliding block 611 to slide, so that the sliding block 611 slides to be separated from the first blocking position 211, when the sliding block 611 slides, the sliding block 611 pushes the connecting block 612 to move, when the connecting block 612 moves, the limiting member 62 is pushed to be separated from the second blocking position 5131, so that the rotating portion 513 can rotate relative to the supporting frame 1, and further the transmission member 54 is pushed to move, so that the front rotating seat 21 rotates relative to the supporting frame 1 to be folded. In the unfolded state of the tricycle, the stopper 62 is engaged with the second stopper 5131, so that the left rear leg 411 does not wobble due to the meshing gap between the left transmission gear 511 and the left driving gear 52, and the right rear leg 421 does not wobble due to the meshing gap between the right transmission gear 512 and the right driving gear 53.

As shown in fig. 8 to 10, a strip-shaped hole 6121 is disposed on the connecting block 612, the limiting member 62 includes a limiting block 621 rotatably connected to the support frame 1 and abutting against the second locking portion 5131, a bolt 622 capable of extending into the movable hole 6121 and moving in the strip-shaped hole 6121 is disposed on the limiting block 621, and when the connecting block 612 slides relative to the support frame 1, an inner wall of the strip-shaped hole 6121 presses the bolt 622 to disengage the limiting block 621 from the second locking portion 5131.

When the children tricycle is folded, the connecting block 612 slides backwards, the inner wall of the strip-shaped hole 6121 in the connecting block 612 presses the bolt 622, so that the limiting block 621 rotates and is separated from the second clamping position 5131, the rotating part 513 can rotate relative to the supporting frame 1 at the moment, in the unfolding process of the children tricycle, the connecting block 612 slides forwards, the inner wall of the strip-shaped hole 6121 in the connecting block 612 presses the bolt 622, the limiting block 621 rotates reversely and is clamped with the second clamping position 5131, the rotating part 513 cannot rotate relative to the supporting frame 1 at the moment, and therefore the rear supporting frame 4 cannot swing due to the meshing gap.

As shown in fig. 14, the supporting frame 1 is further rotatably connected with an unlocking assembly 7 capable of unlocking the locking device, the unlocking assembly 7 includes a handle 71 rotatably connected to the supporting frame 1 and capable of pulling the first cable 63 to disengage the sliding block 621 from the first detent 211 when rotating relative to the supporting frame 1, and the handle 71 is further provided with a reset element 72 capable of driving the handle 71 to rotate relative to the supporting frame 1 to reset. The return element 72 is a torsion spring by which the handle 71 can be returned when the child tricycle is displayed.

As shown in fig. 14, the supporting frame 1 is provided with an accommodating groove 11, a concave hole 12 communicating with the accommodating groove 11 is further provided on a side of the supporting frame 1 adjacent to the accommodating groove 11, a pressing block 13 capable of sliding in the concave hole 12 is provided in the concave hole 12, the handle 71 is accommodated in the accommodating groove 11 and can be pulled up only when the pressing block 13 is pressed, and an elastic reset piece 14 for driving the pressing block 13 to reset is further provided between the bottom surface of the concave hole 12 and the pressing block 13.

When the child tricycle unlocks the locking device, the pressing block 13 is firstly pressed, the pressing block 13 extends into the concave hole 12, at the moment, the outer wall of the handle 71 can be exposed, a user pulls the handle 71 and lifts the tricycle, the handle 71 pulls the first cable 63 to move, the first cable 63 pulls the sliding part 61 to enable the sliding part 61 to be separated from the first clamping position 211, at the moment, the front rotating seat 21 and the support frame 1 are unlocked, the sliding part 61 drives the limiting part 62 to be separated from the second clamping position 5131 while sliding, at the moment, the support frame 1 and the rotating part 513 are unlocked, so that the locking device is unlocked, after the locking device is unlocked, the left supporting part 41 and the right supporting part 42 rotate downwards under the action of self weight and are close to the front wheel assembly 32, the left supporting part 41 and the right supporting part 42 push the linkage mechanism 5 while rotating, the linkage mechanism 5 drives the front support frame 2 to rotate upwards and close, therefore, the locking device can be unlocked only by pulling and lifting the handle 71, and the whole child tricycle can be folded, so that the unlocking is simple and convenient, and the folding is simple. Moreover, the handle 71 can be pulled up only after the pressing block 13 is pressed down, so that the child tricycle is provided with the two-way lock mechanism, the handle 71 can be protected, and the phenomenon that the child tricycle is folded due to the fact that the handle 71 is touched by mistake is avoided.

As shown in fig. 12 to 14, the support frame 1 may further be connected with a hand push rod assembly 8, the support frame 1 is provided with an accommodating space 15, the hand push rod assembly 8 includes a rotating seat 81 disposed in the accommodating space 15 and capable of rotating in the accommodating space 15, a push rod 82 is detachably connected to the rotating seat 81, an elastic fixing member 821 capable of fixing the push rod 82 on the rotating seat 81 is disposed in the push rod 82, a first arc protrusion 8211 is disposed on the elastic fixing member 821, a clamping hole 811 capable of accommodating the first arc protrusion 8211 is disposed on the rotating seat 81, and a second arc protrusion 8212 capable of disengaging the first arc protrusion 8211 from the clamping hole 811 after being pressed is further disposed on the elastic fixing member 821. The elastic fixing element 821 is a metal elastic sheet.

Push rod 82 can be increased to the children's tricycle, the user can be through the removal of push rod 82 control children's tricycle, when not needing push rod 82, press first arc protruding 8211, elastic fixing spare 821 inwards moves, and make the protruding 8212 of second arc break away from card hole 811, push rod 82 can take out from roating seat 81 this moment, the arc outer wall of the protruding 8212 of second arc is convenient for when protruding 8112 of second arc and card hole 811 parallel and level, can extrude from the pore wall of card hole 811, card death can not appear.

As shown in fig. 12 to 14, a left cable 83 for controlling the rotating frame 31 to rotate to the left and a right cable 84 for controlling the rotating frame 31 to rotate to the right when the rotating base 81 rotates are further provided between the rotating base 81 and the rotating frame 31.

When the children tricycle is used, the hand push rod assembly 8 can be matched with the rotating frame 31 to control the rotation of the front wheel assembly 32, and therefore an adult can conveniently push and control the tricycle. When an adult pushes, the steering handle 33 and the rotating frame 31 can be separated from each other, so that a child cannot control the traveling direction through the steering handle 33, and the adult can control the rotation of the steering frame 31 by rotating the push rod 82, thereby controlling the direction.

Claims

1. Child tricycle having a vertical plane of Symmetry (SP) and being movable from an unfolded position to a folded position, characterized in that: comprises a support frame (1) for supporting a seat, wherein the front end of the support frame (1) is connected with a front support frame (2) which can rotate around a first axis (A) relative to the support frame, the front support frame (2) is connected with a steering device (3), the steering device (3) comprises a rotating frame (31) which can rotate around a second axis (B) relative to the front support frame (2), the lower end of the rotating frame (31) is provided with a front wheel assembly (32), the upper end of the rotating frame (31) is connected with a steering handle (33), the rear end of the support frame (1) is connected with a rear support frame (4), the rear support frame (4) comprises a left support part (41) and a right support part (42) which are arranged at two sides of a Symmetrical Plane (SP), the left support part (41) is rotatably connected with the support frame (1) around a third axis (C), the left support part (41) comprises a left rear leg (411) and a left rear wheel (412) arranged at, the right supporting part (42) is rotatably connected with the supporting frame (1) around a fourth axis (D), and the right supporting part (42) comprises a right rear leg (421) and a right rear wheel (422) arranged at the lower end of the right rear leg (421);

and a linkage mechanism (5) which drives the front support frame (2) to rotate around the first axis (A) relative to the support frame (1) in the process that the rear support frame (4) rotates relative to the support frame (1) is further arranged between the front support frame (2) and the rear support frame (4).

2. The children's tricycle of claim 1, wherein: the third axis (C) is arranged at an acute angle to the vertical Symmetry Plane (SP) such that the left rear wheel (412) can move from a position away from the vertical Symmetry Plane (SP) to a position close to the vertical Symmetry Plane (SP) when the left rear leg (411) is rotated forward about the third axis (C);

the fourth axis (D) and the vertical Symmetry Plane (SP) are arranged at an acute angle, so that when the right rear leg (421) rotates forwards around the fourth axis (D), the right rear wheel (422) can move from a position far away from the vertical Symmetry Plane (SP) to a position close to the vertical Symmetry Plane (SP).

3. The children's tricycle of claim 1 or 2, wherein: the front support frame (2) is rotatably connected with the front end of the support frame (1) around the first axis (A) through a front rotating base (21), the linkage mechanism (5) comprises a linkage piece (51) which is arranged in the support frame (1) and can move in the support frame (1), a left driving gear (52) which is in matched transmission with the linkage piece (51) and rotates around the third axis (C), and a right driving gear (53) which is in matched transmission with the linkage piece (51) and rotates around the fourth axis (D), the left driving gear (52) is connected with the left rear leg (411) and can rotate around the third axis (C) together with the upper end of the left rear leg (411), the right driving gear (53) is connected with the right rear leg (421) and can rotate around the fourth axis (D) together with the upper end of the right rear leg (421), a transmission piece (54) is connected on the front rotating base (21) and deviates from the first axis (A), one end of the transmission piece (54) is rotatably connected with the front rotating seat (21) around a fifth axis (E), and the other end of the transmission piece is rotatably connected with a rotating part (513) on the linkage piece (51) around a sixth axis (F).

4. The children's tricycle of claim 3, wherein: the linkage piece (51) comprises a left transmission gear (511) and a right transmission gear (512) which are arranged in the support frame (1), the left transmission gear (511) is in meshing transmission with a left driving gear (52), the right transmission gear (512) is in meshing transmission with a right driving gear (53), a rotating part (513) is arranged between the left transmission gear (511) and the right transmission gear (512) and rotates along with the left transmission gear (511) and the right transmission gear (512), and the left transmission gear (511), the right transmission gear (512) and the rotating part (513) rotate around a seventh axis (G).

5. The children's tricycle of claim 4, wherein: the left transmission gear (511), the right transmission gear (512), the left driving gear (52) and the right driving gear (53) are all helical gears.

6. The children's tricycle of claim 1 or 2, wherein: preceding strut (2) are around through preceding rotation seat (21) and support frame (1) front end first axis (A) rotates to be connected, link gear (5) including rotationally establishing in support frame (1) and can follow pivoted rotation portion (513) when back strut (4) rotates relative support frame (1), rotation portion (513) and preceding rotation seat (21) between be equipped with and promote preceding rotation seat (21) pivoted driving medium (54) when rotation portion (513) rotate, be equipped with locking device between preceding strut (2) and support frame (1), locking device include slider (61) of locating in the support frame slidable, preceding strut (2) on be equipped with first screens (211) that can block or break away from with slider (61), support frame (1) in still be equipped with can block and just at slider (5131) block on rotation portion (513) when slider (61) and first screens (211) block 61) And a limiting piece (62) which can be driven by the sliding piece (61) to separate from the second block position (5131) when separating from the first block position (211).

7. The children's tricycle of claim 6, wherein: the front rotating seat (21) is provided with the first clamping position (211), the sliding part (61) comprises a sliding block (611) which is slidably arranged in the support frame (1) and a connecting block (612) which is connected with the sliding block (611) and used for driving the limiting part (62) to be separated from the second clamping position (5131), the sliding block (611) is provided with a first inhaul cable (63) which is used for pulling the sliding block (611) to slide and to be separated from the first clamping position (211), and the support frame (1) is further internally provided with a return spring (64) which drives the sliding block (611) to return.

8. The children's tricycle of claim 7, wherein: be equipped with bar hole (6121) on connecting block (612), stopper (62) including rotate connect on support frame (1) and with stopper (621) that second screens (5131) leaned on each other, be equipped with on stopper (621) and can stretch into bar hole (6121) in and can be in bar hole (6121) internalization bolt (622), when connecting block (612) slides relative support frame (1), the inner wall roof pressure bolt (622) in bar hole (6121) and order about stopper (621) and second screens (5131) and break away from.

9. The children's tricycle of claim 7, wherein: the locking device comprises a support frame (1) and is characterized in that an unlocking assembly (7) capable of unlocking a locking device is further rotatably connected to the support frame (1), the unlocking assembly (7) comprises a handle (71) which is rotatably connected to the support frame (1) and capable of pulling a first pull cable (63) to enable a sliding block (621) to be separated from a first clamping position (211) when rotating relative to the support frame (1), and a reset element (72) capable of driving the handle (71) to rotate relative to the support frame (1) to reset is further arranged on the handle (71);

be equipped with accepting groove (11) on support frame (1), still be equipped with on one side adjacent with accepting groove (11) on support frame (1) with communicating shrinkage pool (12) of accepting groove (11), be equipped with in shrinkage pool (12) and press piece (13) that can be gliding in it, handle (71) accept in accepting groove (11) and only when pressing piece (13) by the back handle (71) just can be pulled up, the bottom surface of shrinkage pool (12) and press still be equipped with between piece (13) and order about elasticity that presses piece (13) to reset and reset piece (14).

10. The children's tricycle of claim 1, wherein: still be connected with handspike subassembly (8) on support frame (1), be equipped with accommodating space (15) on support frame (1), handspike subassembly (8) including locating accommodating space (15) in and can be at roating seat (81) of accommodating space (15) internal rotation, can dismantle on roating seat (81) and be connected with push rod (82), be equipped with in push rod (82) and fix elastic fixing spare (821) on roating seat (81) with push rod (82), be equipped with first arc arch (8211) on elastic fixing spare (821), be equipped with card hole (811) that can hold first arc arch (8211) on roating seat (81), still be equipped with on elastic fixing spare (821) and make second arc arch (8212) that first arc arch (8211) break away from card hole (811) after pressing.