CN214216032U

CN214216032U - Children tricycle

Info

Publication number: CN214216032U
Application number: CN202120121746.3U
Authority: CN
Inventors: 廖整辉
Original assignee: Zhongshan Xingshang Baby Product Co ltd
Current assignee: Zhongshan Xingshang Baby Product Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-09-17
Anticipated expiration: 2031-01-15

Abstract

The utility model discloses a children tricycle has vertical symmetry plane SP to can follow the expansion position and remove to folding position, the loach carrying platform comprises a supporting fram, the support frame front end is connected with preceding strut, be connected with on the preceding strut and turn to the device, turn to the device including rotating handle and front wheel subassembly, the support frame rear end is connected with the back strut, the back strut includes the support body, the support body on be equipped with the seat, the support body on be connected with left supporting part and the right supporting part that sets up in vertical symmetry plane SP both sides, left side supporting part rotates around third axis C and support body to be connected, left side supporting part includes left back leg and establishes the left rear wheel at left back leg lower extreme, right side supporting part rotates around fourth axis D and support body to be connected, right side supporting part includes right back leg and establishes the right back wheel at right back leg lower extreme. The utility model aims at overcoming the defects of the prior art and providing a child tricycle which is simple in folding operation and small in size after being folded.

Description

Children tricycle

[ technical field ] A method for producing a semiconductor device

The utility model relates to a children tricycle.

[ background of the invention ]

At present, three-wheeled bassinet becomes a common product used in the growth process of children. Most of the existing children's tricycles can not be folded, even if some of the existing children's tricycles can be folded, the operation is troublesome during folding, the folding structure is complex, the folding effect is not ideal, and the problem of large volume still exists after folding.

Therefore, the present invention is based on the above disadvantages.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art and providing a child tricycle which is simple in folding operation and small in size after being folded.

The utility model discloses a realize through 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: including support frame 1, support frame 1 front end is connected with can be relative it around first axis A pivoted preceding strut 2, be connected with on preceding strut 2 and turn to device 3, turn to device 3 including connecting in preceding strut 2 upper end and rotate 31, preceding strut 2 lower extreme be connected with front wheel subassembly 32, support frame 1 rear end is connected with back strut 4, back strut 4 includes around second axis B rotate connect in support frame 1 rear end support body 41, support body 41 on be equipped with seat 45, support body 41 on still be connected with the left support portion 42 and the right branch portion 43 of setting in vertical symmetry plane SP both sides, left support portion 42 rotates around third axis C and is connected with support body 41, left support portion 42 includes left back leg 421 and establishes at left back wheel 422 of left back leg 421 lower extreme, right branch portion 43 rotates around fourth axis D and is connected with support body 41, the right support portion 43 includes a right rear leg 431 and a right rear wheel 432 provided at a lower end of the right rear leg 431;

support body 41 and support frame 1 between be equipped with the first locking mechanical system 6 that enables the two to lock each other, support body 41 and left back leg 421 and right back leg 431 between be equipped with and can take place the linkage and the second locking mechanical system 7 that unlocks with first locking mechanical system 6 with left back leg 421 and right back leg 431 locking on support body 41 and when first locking mechanical system 6 unblock, back strut 4 on still be equipped with the operating means 451 that can control the unblock of first locking mechanical system 6.

The children tricycle is characterized in that: the left rear leg 421 includes a left rear leg 4211 and a left rotation plate 4212 connected to the left rear leg 4211 and rotatably connected to the frame body 41 around a third axis C, the right rear leg 431 includes a right rear leg 4311 and a right rotation plate 4312 connected to the right rear leg 4311 and rotatably connected to the frame body 41 around a fourth axis D, and a link device 44 is disposed between the left rear leg 4211 and the right rear leg 4311 for allowing the left rear leg 4211 and the right rear leg 4311 to rotate relative to the frame body 41 when the left rotation plate 4212 or the right rotation plate 4312 rotates relative to the frame body 41.

The children tricycle is characterized in that: the linkage 44 includes a protruding tooth 441 disposed on the left rear leg 4211, and the right rear leg 4311 is provided with a tooth slot 442 capable of engaging with the protruding tooth 441 to cause the right rear leg 4311 and the left rear leg 4211 to be driven in a meshing manner.

The children tricycle is characterized in that: the left rotation piece 4212 is provided with a first unfolding position 42121, the right rotation piece 4312 is provided with a second unfolding position 43121, and when the second locking mechanism 7 is locked with the first unfolding position 42121 and the second unfolding position 43121 at the same time, the left rear leg 4211 and the right rear leg 4311 are in a relatively unfolded state;

the left rotation plate 4212 is provided with a first folding position 42122, the right rotation plate 4312 is provided with a second folding position 43122, and when the second locking mechanism 7 is locked with the first folding position 42122 and the second folding position 43122 at the same time, the left rear leg 4211 and the right rear leg 4311 approach each other and are folded.

The children tricycle is characterized in that: the rotating handle 31 is rotatably connected to the upper part of the front support frame 2 around a fifth axis E, and a third locking mechanism capable of keeping the rotating handle 31 and the front support frame 2 in a locking state is arranged between the rotating handle 31 and the front support frame 2.

The children tricycle is characterized in that: the first locking mechanism 6 includes a detent 64 disposed in the supporting frame 1, a locking member 61 capable of sliding laterally relative to the frame body 41 to engage with or disengage from the detent 64 is disposed in the frame body 41, a connecting member 62 capable of sliding longitudinally relative to the frame body 41 to drive the locking member 61 to slide laterally relative to the supporting frame 1 and the frame body 41 to disengage from the detent 64 is disposed in the frame body 41, the operating member 451 includes a sliding unlocking member 4511 disposed in the seat 45 and capable of sliding laterally relative to the seat 45 to drive the connecting member 62 to slide longitudinally in the frame body 41, a second elastic member 4512 pressing the sliding unlocking member 4511 to reset the sliding unlocking member 4511 is disposed between the sliding unlocking member 4511 and the seat 45, and a third elastic member 63 capable of engaging the locking member 61 with the detent 64 is disposed between the locking member 61 and the frame body 41.

The children tricycle is characterized in that: the locking piece 61 comprises a locking block 611, a first inclined sliding surface 612 is arranged on the locking block 611, the connecting piece 62 comprises a connecting block 621, and a second inclined sliding surface 622 which is matched with the first inclined sliding surface 612 and can drive the locking block 611 to slide transversely relative to the support frame 1 is arranged on the connecting block 621;

the connecting block 621 is connected with a latch 65 extending to a slide unlocking member 4511, the slide unlocking member 4511 includes a slide unlocking block 45111, and the slide unlocking block 45111 is provided with a third inclined sliding surface 45112 capable of pressing the latch 65 to drive the connecting block 621 to slide longitudinally relative to the frame body 41 when the slide unlocking block 45111 slides transversely relative to the seat 45;

seat 45 on still be equipped with two lock mechanisms 5 that can prevent the relative seat 45 lateral shifting of slip unlocking piece 4511, two lock mechanisms 5 including locating slip unlocking piece 45111 on recess 45113, just two lock mechanisms 5 still including the operation piece 51 that can be relative seat 45 longitudinal sliding, operation piece 51 on be equipped with and to insert in recess 45113 and lean on slip unlocking piece 45111 and prevent the protruding 511 of slip unlocking piece 45111 relative seat 45 lateral sliding, operation piece 51 and seat 45 between be equipped with and enable operation piece 51 and the mutual first elastic component 52 that leans on of slip unlocking piece 4511.

the left rotation piece 4212 is provided with a first folding position 42122, the right rotation piece 4312 is provided with a second folding position 43122, and when the second locking mechanism 7 is locked with the first folding position 42122 and the second folding position 43122 at the same time, the left rear leg 4211 and the right rear leg 4311 approach each other and are folded;

the second locking mechanism 7 includes a positioning member 71 connected to the frame 41, the positioning member 71 can be inserted into the first expanding position 42121 and the second expanding position 43121 simultaneously to expand the left rotating piece 4212 and the right rotating piece 4312 relatively and be locked on the frame 41, the positioning member 71 can be inserted into the first retracting position 42122 and the second retracting position 43122 simultaneously to retract the left rotating piece 4212 and the right rotating piece 4312 relatively and be locked on the frame 41, a pressing unlocking member 72 is further provided in the frame 41, the pressing unlocking member 72 can drive the positioning member 71 to slide downward relative to the frame 41 when the positioning member slides longitudinally relative to the frame 41 and disengage from the first expanding position 42121 and the second expanding position 43121 or the first retracting position 42122 and the second retracting position 43122 simultaneously, a driving member 73 is further provided in the frame 41, the driving member 62 can move transversely relative to the frame 41 when sliding upward relative to the frame 41 to drive the pressing unlocking member 72 to slide downward relative to the frame 41, an elastic pressing member 74 is disposed between the pressing unlocking member 72 and the frame 41 for keeping the positioning member 71 simultaneously clamped in the first expanded position 42121 and the second expanded position 43121 or the first retracted position 42122 and the second retracted position 43122.

The children tricycle is characterized in that: the driving member 73 includes a driving block 731, the driving block 731 is provided with a fourth inclined sliding surface 732, and the connecting block 621 is provided with a fifth inclined sliding surface 623 which can cooperate with the fourth inclined sliding surface 732 to drive the driving block 731 to move transversely when the connecting block 621 slides upwards relative to the frame body 41;

the pressing unlocking piece 72 comprises a pressing unlocking piece 721 penetrating out of the frame body 41, the pressing unlocking piece 721 is provided with a sixth inclined sliding surface 722, the driving block 731 is provided with a seventh inclined sliding surface 733 which can be matched with the sixth inclined sliding surface 722 and can drive the pressing unlocking piece 721 to slide downwards when the driving block 731 moves transversely relative to the frame body 41;

the positioning element 71 includes a positioning block 711, the positioning block 711 is disposed on the press unlocking block 721 in a penetrating manner, a boss 712 is disposed at a lower portion of the positioning block 711, and the press unlocking block 721 is provided with a pressing surface 723 capable of cooperating with the boss 712 to press the boss 712 when the press unlocking block 721 slides downward relative to the frame body 41, so that the boss 712 is separated from the first expanding position 42121 and the second expanding position 43121 or the first retracting position 42122 and the second retracting position 43122 at the same time.

The children tricycle is characterized in that: the left rear wheel 422 can rotate from the outside of the left rear leg 4211 to the inside of the left rear leg 4211, and a first locking structure 8 capable of locking the left rear leg frame 4211 and the left rear wheel 422 is arranged between the two, the first locking structure 8 comprises a left upper shell 81 arranged on the left rear wheel 422 and a left lower shell 82 arranged on the left rear leg 4211, the left upper shell 81 and the left lower shell 82 are enclosed to form a left accommodating cavity 83, a left spline groove 84 is arranged in the left upper shell 81 and the left lower shell 82, a left spline 85 which can slide up and down relative to the left upper shell 81 and the left lower shell 82 and can be simultaneously clamped with a left spline groove 84 in the left upper shell 81 and the left lower shell 82 is arranged in the left accommodating cavity 83, the left upper shell 81 is connected with a left pressing piece 86 which can make the left spline 85 separate from the left upper shell 81 after being pressed, a left reset spring 87 which can reset the left spline 85 is connected between the left spline 85 and the left lower shell 82;

the right rear wheel 432 can be rotated from the outer side of the right rear leg 4311 to the inner side of the right rear leg 4311, and a second locking structure 9 capable of locking the right rear leg 4311 and the right rear wheel 432 is arranged between the two, the second locking structure 9 comprises a right upper shell 91 arranged on the right rear wheel 432 and a right lower shell 92 arranged on the right rear leg 4311, the right upper shell 91 and the right lower shell 92 are enclosed to form a right accommodating cavity 93, a right spline groove 94 is arranged in the right upper shell 91 and the right lower shell 92, a right spline 95 which can slide up and down relative to the right upper shell 91 and the right lower shell 92 and can be simultaneously clamped with a right spline groove 94 in the right upper shell 91 and the right lower shell 92 is arranged in the right accommodating cavity 93, the right upper case 91 is connected with a right pressing piece 96 which can make the right spline 95 separate from the right upper case 91 after being pressed, a right return spring 97 capable of returning the right spline 95 is connected between the right spline 95 and the right lower shell 92.

Compared with the prior art, the utility model discloses there is following advantage: when the folding device is folded, the operation part is controlled to unlock the first locking mechanism, when the first locking mechanism is unlocked, the frame body can rotate around the second axis B relative to the support frame, and when the first locking mechanism is unlocked, the first locking mechanism is linked to unlock the second locking mechanism, when the second locking mechanism is unlocked, the left rear leg and the right rear leg can respectively rotate around the third axis C and the fourth axis D relative to the frame body, after the first locking mechanism and the second locking mechanism are unlocked, the support frame is lifted, at the moment, due to dead weight, the frame body rotates relative to the support frame and is close to the front wheel assembly, simultaneously the left rear leg and the right rear leg are close to the front wheel assembly along with the frame body, when the left rear leg is close to the front wheel assembly, the left rear leg rotates around the third axis C, the right rear leg rotates around the fourth axis D, the right rear leg and the left rear leg are close to each other, the left rear wheel moves from the position far away from the front wheel assembly to the position close to the front wheel assembly, the right rear wheel moves to the position that is close to the front wheel subassembly from the position of keeping away from the front wheel subassembly, and whole children's tricycle has just been accomplished to fold up this moment, and the mode of folding up is simple, and the children's tricycle after folding up can reduce in length direction and width direction moreover, and the space that occupies is little, portable and deposit to linkage unblock between first locking mechanical system and the second locking mechanical system, structural design is more compact, and the unblock is more convenient.

[ description of the drawings ]

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

fig. 2 is a second perspective view of the child tricycle of the present invention;

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

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

FIG. 5 is an exploded view of the linkage assembly of the child tricycle of the present invention;

FIG. 6 is a perspective view of the child tricycle of the present invention when folded;

FIG. 7 is a plan view of the child tricycle of the present invention folded;

fig. 8 is a perspective view of the child tricycle of the present invention converted into a child balance car;

fig. 9 is a cross-sectional view of the child tricycle of the present invention;

FIG. 10 is an enlarged view of area F of FIG. 9;

FIG. 11 is one of the perspective views of the first and second locking mechanisms of the child tricycle of the present invention;

fig. 12 is a second perspective view of the first and second locking mechanisms of the child tricycle of the present invention;

fig. 13 is a perspective view of one of the first locking structure or the second locking structure of the child tricycle of the present invention;

fig. 14 is a second perspective view of the first or second locking structure of the child tricycle of the present invention.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1 to 14, the present invention provides a tricycle for children, which has a vertical symmetry plane SP and can move from an unfolded position to a folded position, and is characterized in that: including support frame 1, support frame 1 front end is connected with can be relative it around first axis A pivoted preceding strut 2, be connected with on preceding strut 2 and turn to device 3, turn to device 3 including connecting in preceding strut 2 upper end and rotate 31, preceding strut 2 lower extreme be connected with front wheel subassembly 32, support frame 1 rear end is connected with back strut 4, back strut 4 includes around second axis B rotate connect in support frame 1 rear end support body 41, support body 41 on be equipped with seat 45, support body 41 on still be connected with the left support portion 42 and the right branch portion 43 of setting in vertical symmetry plane SP both sides, left support portion 42 rotates around third axis C and is connected with support body 41, left support portion 42 includes left back leg 421 and establishes at left back wheel 422 of left back leg 421 lower extreme, right branch portion 43 rotates around fourth axis D and is connected with support body 41, the right support portion 43 includes a right rear leg 431 and a right rear wheel 432 provided at a lower end of the right rear leg 431; support body 41 and support frame 1 between be equipped with the first locking mechanical system 6 that enables the two to lock each other, support body 41 and left back leg 421 and right back leg 431 between be equipped with and can take place the linkage and the second locking mechanical system 7 that unlocks with first locking mechanical system 6 with left back leg 421 and right back leg 431 locking on support body 41 and when first locking mechanical system 6 unblock, back strut 4 on still be equipped with the operating means 451 that can control the unblock of first locking mechanical system 6.

When the child tricycle is folded, the operation part 451 is controlled to unlock the first locking mechanism 6, the frame body 41 can rotate around the second axis B relative to the support frame 1 when the first locking mechanism 6 is unlocked, the first locking mechanism 6 is linked to unlock the second locking mechanism 7 when the first locking mechanism 6 is unlocked, the left rear leg 421 and the right rear leg 431 can rotate around the third axis C and the fourth axis D relative to the frame body 41 when the second locking mechanism 7 is unlocked, the support frame 1 is lifted up after the first locking mechanism 6 and the second locking mechanism 7 are unlocked, at the same time, due to self weight, the frame body 41 rotates relative to the support frame 1 and approaches the front wheel assembly 32, the left rear leg 421 and the right rear leg 431 approach the front wheel assembly 32 along with the frame body 41, and when the left rear leg 421 moves around the third axis C, the right rear leg 431 moves around the fourth axis D, the right rear leg 431 and the left rear leg 421 approach each other, left rear wheel 422 moves to the position that is close to front wheel subassembly 32 from the position of keeping away from front wheel subassembly 32, right rear wheel 432 moves to the position that is close to front wheel subassembly 32 from the position of keeping away from front wheel subassembly 32, whole children tricycle has just been accomplished to fold up this moment, the mode of folding up is simple, and the children tricycle after folding up can reduce in length direction and width direction, the space that occupies is little, be convenient for carry and deposit, and the linkage unblock between first locking mechanical system 6 and the second locking mechanical system 7, structural design is compacter, it is more convenient to unblock.

As shown in fig. 1 to 5, the left rear leg 421 includes a left rear leg 4211 and a left rotation plate 4212 connected to the left rear leg 4211 and rotatably connected to the frame body 41 about a third axis C, the right rear leg 431 includes a right rear leg 4311 and a right rotation plate 4312 connected to the right rear leg 4311 and rotatably connected to the frame body 41 about a fourth axis D, and a linkage 44 is provided between the left rear leg 4211 and the right rear leg 4311 for rotating the left rear leg 4211 and the right rear leg 4311 relative to the frame body 41 when the left rotation plate 4212 or the right rotation plate 4312 rotates relative to the frame body 41. The linkage 44 includes a protruding tooth 441 disposed on the left rear leg 4211, and the right rear leg 4311 is provided with a tooth slot 442 capable of engaging with the protruding tooth 441 to cause the right rear leg 4311 and the left rear leg 4211 to be driven in a meshing manner.

And when the left rear leg 4211 is rotated, the left rotary plate 4212 rotates about the third axis C relative to the frame body 41, and the convex teeth 441 on the left rear leg 4211 are engaged with the concave grooves 442 on the right rear leg 4311 to drive the right rear leg 4311 to move synchronously with the left rear leg 4211, so that the right rear leg 4311 rotates synchronously when the left rear leg 4211 rotates, and the right rotary plate 4312 rotates about the fourth axis D relative to the frame body 41, so that the left rear leg 4211 and the right rear leg 4311 move synchronously to be unfolded or folded relative to the frame body 41.

As shown in fig. 1 to 5 and 11 to 12, the left rotation plate 4212 is provided with a first unfolding position 42121, the right rotation plate 4312 is provided with a second unfolding position 43121, and when the second locking mechanism 7 is simultaneously locked with the first unfolding position 42121 and the second unfolding position 43121, the left rear leg 4211 and the right rear leg 4311 are in a relatively unfolded state; the left rotation plate 4212 is provided with a first folding position 42122, the right rotation plate 4312 is provided with a second folding position 43122, and when the second locking mechanism 7 is locked with the first folding position 42122 and the second folding position 43122 at the same time, the left rear leg 4211 and the right rear leg 4311 approach each other and are folded. The first expanded position 42121 and the first collapsed position 42122 are holes disposed on the left rotor 4212, and the second expanded position 43121 and the second collapsed position 43122 are holes disposed on the right rotor 4312.

As shown in fig. 1, 2, 3, 5 and 7, the rotating handle 31 is rotatably connected to the upper part of the front bracket 2 around a fifth axis E, and a third locking mechanism capable of keeping the rotating handle 31 and the front bracket 2 in a locked state is arranged between the rotating handle and the front bracket 2. The third locking mechanism is an existing spline lock or a bolt lock, and after the third locking mechanism is unlocked, the rotating handle 31 is pushed, so that the rotating handle 31 rotates around the fifth axis E relative to the front support frame 2 and is close to the support frame 1, the height direction of the child tricycle is reduced, and at the moment, the folding volume of the child tricycle is minimized, and the child tricycle is more convenient to store.

As shown in fig. 9 to 10, the first locking mechanism 6 includes a detent 64 disposed in the supporting frame 1, a locking member 61 capable of sliding laterally relative to the frame body 41 to engage with or disengage from the detent 64 is disposed in the frame body 41, a connecting member 62 capable of sliding longitudinally relative to the frame body 41 to drive the locking member 61 to slide laterally relative to the supporting frame 1 and the frame body 41 to disengage from the detent 64 is disposed in the frame body 41, the operating member 451 includes a sliding unlocking member 4511 disposed in the seat 45 and capable of sliding laterally relative to the seat 45 to drive the connecting member 62 to slide longitudinally in the frame body 41, a second elastic member 4512 pressing the sliding unlocking member 4511 to reset the sliding unlocking member 4511 is disposed between the sliding unlocking member 4511 and the seat 45, and a third elastic member 63 capable of engaging the locking member 61 in the detent 64 is disposed between the locking member 61 and the frame body 41.

When the first locking mechanism 6 is unlocked, the sliding unlocking piece 4511 is pulled first, the sliding unlocking piece 4511 slides leftwards relative to the seat 45, and when the sliding unlocking piece 4511 slides leftwards relative to the seat 45, the sliding unlocking piece 4511 pulls the connecting piece 62 to slide upwards, and when the sliding unlocking piece 4511 pulls the connecting piece 62 to slide upwards, the lower end of the connecting piece 62 pulls the locking piece 61 to slide rightwards, and the locking piece 61 can compress the third elastic piece 63 and break away from the clamping position 64 when sliding rightwards, at this time, the frame body 41 and the support frame 1 can be rotated.

As shown in fig. 9 to 12, the locking member 61 includes a locking block 611, the locking block 611 is provided with a first inclined sliding surface 612, the connecting member 62 includes a connecting block 621, and the connecting block 621 is provided with a second inclined sliding surface 622 which cooperates with the first inclined sliding surface 612 to drive the locking block 611 to slide transversely with respect to the supporting frame 1. The cooperation of the second inclined sliding surface 622 and the first inclined sliding surface 612 facilitates the connecting block 621 to press the locking block 611 to slide rightward.

As shown in fig. 9 to 12, a latch 65 extending to a slide unlocking member 4511 is connected to the connecting block 621, the slide unlocking member 4511 includes a slide unlocking block 45111, and a third inclined sliding surface 45112 is provided on the slide unlocking block 45111, and is capable of pressing the latch 65 to drive the connecting block 621 to slide longitudinally relative to the frame body 41 when the slide unlocking block 45111 slides transversely relative to the seat 45. The cooperation of the third ramp surface 45112 and the latch 65 facilitates the sliding of the slide unlocking block 45111 to lift the connecting block 621 upward.

As shown in fig. 9 to 12, the seat 45 is further provided with a two-way lock mechanism 5 capable of preventing the sliding unlocking piece 4511 from moving transversely relative to the seat 45, the two-way lock mechanism 5 comprises a groove 45113 formed in the sliding unlocking piece 45111, the two-way lock mechanism 5 further comprises an operation block 51 capable of sliding longitudinally relative to the seat 45, the operation block 51 is provided with a protrusion 52 capable of being inserted into the groove 45113 and abutting against the sliding unlocking piece 45111 to prevent the sliding unlocking piece 45111 from sliding transversely relative to the seat 45, and a first elastic piece 53 capable of enabling the operation block 51 and the sliding unlocking piece 4511 to abut against each other is arranged between the operation block 51 and the seat 45.

In order to avoid the unlocking of the first locking mechanism 6 caused by the child accidentally touching the sliding unlocking piece 4511 during riding, the second locking mechanism 5 is arranged to perform double locking, when the first locking mechanism 6 needs to be unlocked, the operation block 51 needs to be pressed upwards firstly, the protrusion 511 on the operation block 51 is separated from the groove 45113 on the sliding unlocking piece 45111, the sliding unlocking piece 45111 can be pulled to move leftwards to unlock the first locking mechanism 6, the second locking mechanism 5 can avoid the child accidentally touching the sliding unlocking piece 4511 to cause the unlocking of the first locking mechanism 6, and the safety of the child can be ensured.

As shown in fig. 9 to 12, the second locking mechanism 7 includes a positioning member 71 connected to the frame body 41, the positioning member 71 can be inserted into the first expanding position 42121 and the second expanding position 43121 simultaneously to enable the left rotating plate 4212 and the right rotating plate 4312 to be relatively expanded and locked on the frame body 41, the positioning member 71 can be inserted into the first retracting position 42122 and the second retracting position 43122 simultaneously to enable the left rotating plate 4212 and the right rotating plate 4312 to be relatively retracted and locked on the frame body 41, a pressing unlocking member 72 is further disposed in the frame body 41 and can drive the positioning member 71 to slide downward relative to the frame body 41 when the positioning member is longitudinally slid relative to the frame body 41 so as to disengage from the first expanding position 42121 and the second expanding position 43121 or the first retracting position 42122 and the second retracting position 43122 simultaneously, a driving member 73 is further disposed in the frame body 41 and can be moved laterally relative to the pressing unlocking member 72 to slide downward relative to the frame body 41 when the connecting member 62 is upwardly slid relative to the frame body 41, an elastic pressing member 74 is disposed between the pressing unlocking member 72 and the frame 41 for keeping the positioning member 71 simultaneously clamped in the first expanded position 42121 and the second expanded position 43121 or the first retracted position 42122 and the second retracted position 43122.

Because the first locking mechanism 6 and the second locking mechanism 7 are unlocked in a linked manner, when the connecting member 62 slides upwards, the connecting member 62 presses the driving member 73 to slide leftwards relative to the frame body 41, the driving member 73 can drive the pressing unlocking member 72 to slide downwards relative to the frame body 41 when sliding leftwards relative to the frame body 41, the positioning member 71 can be driven to slide downwards relative to the frame body 41 when sliding downwards relative to the frame body 41, and the positioning member 71 can be separated from the first expanding position 42121 and the second expanding position 43121 or the first folding position 42122 and the second folding position 43122 simultaneously, at this time, the left rear leg 4211 or the right rear leg 4311 can be rotated to be folded or adjusted in position, when the positioning member 71 is inserted into the first expanding position 42121 and the second expanding position 43121 simultaneously, the left rear leg 4211 and the right rear leg 4311 are in an expanding state relative to the frame body 41, and at this time, the tricycle can be ridden as a child tricycle, so as to provide sufficient stability, ensure young children safety of riding to insert simultaneously when first receipts are closed 42122 and the second is closed position 43122 when the locating piece 71, left back leg 4211 and the relative support body 41 of right back leg 4311 are the state of drawing in, can ride as children's balance car this moment, be convenient for cultivate children's balance ability, the utility model discloses can switch at tricycle state and balance car state, consequently can be fit for the children of different age brackets, reduce the cost of family's life.

As shown in fig. 9 to 12, the driving member 73 includes a driving block 731, the driving block 731 is provided with a fourth inclined sliding surface 732, and the connecting block 621 is provided with a fifth inclined sliding surface 623 which can cooperate with the fourth inclined sliding surface 732 to drive the driving block 731 to move laterally when the connecting block 621 slides upwards relative to the frame 41. The cooperation of the fifth oblique sliding surface 623 and the fourth oblique sliding surface 732 facilitates the connecting block 621 to press the driving block 731 to slide.

As shown in fig. 9 to 12, the pressing unlocking member 72 includes a pressing unlocking block 721 penetrating the frame body 41, the pressing unlocking block 721 is provided with a sixth inclined sliding surface 722, and the driving block 731 is provided with a seventh inclined sliding surface 733, which can cooperate with the sixth inclined sliding surface 722 to drive the pressing unlocking block 721 to slide downward when the driving block 731 moves laterally relative to the frame body 41. The seventh inclined sliding surface 733 and the sixth inclined sliding surface 722 cooperate to facilitate the driving block 731 to press the unlocking block 721 to slide downwards. And when only the state of the tricycle needs to be adjusted, the exposed pressing unlocking block 721 is pressed, the pressing unlocking block 721 presses the positioning element 71, so that the positioning element 71 is separated from the first unfolding position 42121 and the second unfolding position 43121 or the first folding position 42122 and the second folding position 43122, and then the left rear leg support 4211 and the right rear leg support 4311 are rotated to adjust the tricycle to the state of the tricycle or to adjust the tricycle to the state of the tricycle.

As shown in fig. 9 to 12, the positioning element 71 includes a positioning block 711, the positioning block 711 is disposed on the press unlocking block 721 in a penetrating manner, a boss 712 is disposed at a lower portion of the positioning block 711, and the press unlocking block 721 is provided with a pressing surface 723 capable of cooperating with the boss 712 to press the boss 712 when the press unlocking block 721 slides downward relative to the frame 41, so that the boss 712 is separated from the first expanded position 42121 and the second expanded position 43121 or the first retracted position 42122 and the second retracted position 43122 at the same time. The pressing surface 723 and the boss 712 cooperate to facilitate the positioning block 711 to press the boss 712 downward.

As shown in fig. 3, 8, 13 and 14, the left rear wheel 422 can rotate from the outer side of the left rear leg 4211 to the inner side of the left rear leg 4211, and a first locking structure 8 capable of locking the left rear leg frame 4211 and the left rear wheel 422 is arranged between the two, the first locking structure 8 comprises a left upper shell 81 arranged on the left rear wheel 422 and a left lower shell 82 arranged on the left rear leg 4211, the left upper shell 81 and the left lower shell 82 are enclosed to form a left accommodating cavity 83, a left spline groove 84 is arranged in the left upper shell 81 and the left lower shell 82, a left spline 85 which can slide up and down relative to the left upper shell 81 and the left lower shell 82 and can be simultaneously clamped with a left spline groove 84 in the left upper shell 81 and the left lower shell 82 is arranged in the left accommodating cavity 83, the left upper shell 81 is connected with a left pressing piece 86 which can make the left spline 85 separate from the left upper shell 81 after being pressed, and a left reset spring 87 which can reset the left spline 85 is connected between the left spline 85 and the left lower shell 82.

When the tricycle for children is to be converted into a tricycle for children, the left rear wheel 422 needs to be rotated from the outer side of the left rear leg 4211 to the inner side of the left rear leg 4211 so as to abut against the right rear wheel 432, the left pressing piece 86 is pressed downward, the left pressing piece 86 presses the left spline 85, the left spline 85 is separated from the left spline groove 84 in the left upper shell 81 and enters the left lower shell 82, at this time, the left rear wheel 422 can be rotated, the left rear wheel 422 is rotated from the outer side of the left rear leg 4211 to the inner side of the left rear leg 4211, the left pressing piece 86 is released, the left return spring 87 presses the left spline 85 upward, the left spline 85 is simultaneously engaged with the left spline grooves 84 in the left upper shell 81 and the left lower shell 82, and the left rear leg 4211 and the left rear wheel 422 are locked again.

As shown in fig. 3, 8, 13 and 14, the right rear wheel 432 can be rotated from the outer side of the right rear leg 4311 to the inner side of the right rear leg 4311, and a second locking structure 9 capable of locking the right rear leg 4311 and the right rear wheel 432 is arranged between the two, the second locking structure 9 comprises a right upper shell 91 arranged on the right rear wheel 432 and a right lower shell 92 arranged on the right rear leg 4311, the right upper shell 91 and the right lower shell 92 are enclosed to form a right accommodating cavity 93, a right spline groove 94 is arranged in the right upper shell 91 and the right lower shell 92, a right spline 95 which can slide up and down relative to the right upper shell 91 and the right lower shell 92 and can be simultaneously clamped with a right spline groove 94 in the right upper shell 91 and the right lower shell 92 is arranged in the right accommodating cavity 93, the right upper case 91 is connected with a right pressing piece 96 which can make the right spline 95 separate from the right upper case 91 after being pressed, a right return spring 97 capable of returning the right spline 95 is connected between the right spline 95 and the right lower shell 92.

When the child tricycle is to be converted into a child balance car, the right rear wheel 432 needs to be rotated from the outer side of the right rear leg 4311 to the inner side of the right rear leg 4311 so as to abut against the left rear wheel 422, the right pressing piece 96 is pressed downward, the right pressing piece 96 presses the right spline 95, the right spline 95 is separated from the right spline groove 94 in the right upper shell 91 and enters the right lower shell 92, at this time, the right rear wheel 432 can be rotated, the right rear wheel 432 is rotated from the outer side of the right rear leg 4311 to the inner side of the right rear leg 4311, the right pressing piece 96 is released, the right return spring 97 presses the right spline 95 upward, the right spline 95 is simultaneously clamped with the right spline grooves 94 in the right upper shell 91 and the right lower shell 92, and the locked state between the right rear leg 4311 and the right rear wheel 432 is maintained again.

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), 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 handle (31) connected to the upper end of the front support frame (2), the lower end of the front support frame (2) is connected with a front wheel assembly (32), the rear end of the support frame (1) is connected with a rear support frame (4), the rear support frame (4) comprises a frame body (41) which is rotatably connected to the rear end of the support frame (1) around a second axis (B), the frame body (41) is provided with a seat (45), the frame body (41) is also connected with a left support part (42) and a right support part (43) which are arranged at two sides of a vertical Symmetry Plane (SP), the left support part (42) is rotatably connected with the frame body (41) around a third axis (C), the left support part (42) comprises a left rear leg (421) and a left rear wheel (422) arranged at the lower end of the left rear leg (421), the right support part (43) is rotatably connected with the frame body (41) around a fourth axis (D), and the right support part (43) comprises a right rear leg (431) and a right rear wheel (432) arranged at the lower end of the right rear leg (431);

support body (41) and support frame (1) between be equipped with first locking mechanical system (6) that enables the two to lock each other, support body (41) and left back leg (421) and right back leg (431) between be equipped with can with left back leg (421) and right back leg (431) locking on support body (41) and can take place the linkage and second locking mechanical system (7) of unblock with first locking mechanical system (6) when first locking mechanical system (6) unblock, back strut (4) on still be equipped with operating means (451) that can control the unblock of first locking mechanical system (6).

2. The children's tricycle of claim 1, wherein: the left rear leg (421) comprises a left rear leg frame (4211) and a left rotating sheet (4212) which is connected to the left rear leg frame (4211) and is connected with the frame body (41) in a rotating mode around a third axis (C), the right rear leg (431) comprises a right rear leg frame (4311) and a right rotating sheet (4312) which is connected to the right rear leg frame (4311) and is connected with the frame body (41) in a rotating mode around a fourth axis (D), and a linkage device (44) which can enable the left rear leg frame (4211) and the right rear leg frame (4311) to rotate relative to the frame body (41) when the left rotating sheet (4212) or the right rotating sheet (4312) rotates relative to the frame body (41) is arranged between the left rear leg frame (4211) and the right rear leg frame (4311).

3. The children's tricycle of claim 2, wherein: the linkage device (44) comprises a convex tooth (441) arranged on the left rear leg frame (4211), and a tooth groove (442) which can be matched with the convex tooth (441) to enable the right rear leg frame (4311) and the left rear leg frame (4211) to be in meshing transmission is arranged on the right rear leg frame (4311).

4. The children's tricycle of claim 2, wherein: the left rotating sheet (4212) is provided with a first unfolding position (42121), the right rotating sheet (4312) is provided with a second unfolding position (43121), and when the second locking mechanism (7) is simultaneously locked with the first unfolding position (42121) and the second unfolding position (43121), the left rear leg frame (4211) and the right rear leg frame (4311) are in a relatively unfolded state;

the left rotating piece (4212) is provided with a first folding position (42122), the right rotating piece (4312) is provided with a second folding position (43122), and when the second locking mechanism (7) is simultaneously locked with the first folding position (42122) and the second folding position (43122), the left rear leg frame (4211) and the right rear leg frame (4311) are close to each other and folded.

5. The children's tricycle of claim 1, wherein: the rotating handle (31) is rotatably connected to the upper part of the front support frame (2) around a fifth axis (E), and a third locking mechanism capable of keeping the rotating handle (31) and the front support frame (2) in a locking state is arranged between the rotating handle and the front support frame.

6. The children's tricycle of claim 2, wherein: first locking mechanical system (6) including locate support frame (1) in screens (64), support body (41) in be equipped with can be relative its lateral sliding and with screens (64) block or the locking piece (61) that breaks away from, support body (41) in be equipped with can be relative its longitudinal sliding and drive locking piece (61) relative support frame (1) and support body (41) lateral sliding and with screens (64) connecting piece (62) that break away from, operating means (451) including establish in seat (45) and can be relative its lateral sliding and drive connecting piece (62) longitudinal sliding's unlocking piece (4511) in support body (41), sliding unlocking piece (4511) and seat (45) between be equipped with roof pressure slip unlocking piece (4511) and make second elastic component (4512) that slip unlocking piece (4511) reset, locking piece (61) and support body (41) between be equipped with and to make locking piece (61) block in the third screens (64) of screens (64) An elastic member (63).

7. The children's tricycle of claim 6, wherein: the locking piece (61) comprises a locking block (611), a first inclined sliding surface (612) is arranged on the locking block (611), the connecting piece (62) comprises a connecting block (621), and a second inclined sliding surface (622) which is matched with the first inclined sliding surface (612) and can drive the locking block (611) to transversely slide relative to the support frame (1) is arranged on the connecting block (621);

the connecting block (621) is connected with a bolt (65) extending to the sliding unlocking piece (4511), the sliding unlocking piece (4511) comprises a sliding unlocking piece (45111), and the sliding unlocking piece (45111) is provided with a third inclined sliding surface (45112) which can press the bolt (65) to drive the connecting block (621) to longitudinally slide relative to the frame body (41) when the sliding unlocking piece (45111) transversely slides relative to the seat (45);

seat (45) on still be equipped with two lock mechanism (5) that can prevent the relative seat (45) lateral shifting of slip unlocking piece (4511), two lock mechanism (5) including locating slip unlocking piece (45111) on recess (45113), just two lock mechanism (5) still including can be relative seat (45) longitudinal sliding's operation piece (51), operation piece (51) on be equipped with and to insert to recess (45113) in and lean on slip unlocking piece (45111) and prevent the relative seat (45) lateral sliding's of slip unlocking piece (45111) protruding (511), operation piece (51) and seat (45) between be equipped with and enable operation piece (51) and first elastic component (52) that slip unlocking piece (4511) leaned on each other.

8. The children's tricycle of claim 7, wherein: the left rotating sheet (4212) is provided with a first unfolding position (42121), the right rotating sheet (4312) is provided with a second unfolding position (43121), and when the second locking mechanism (7) is simultaneously locked with the first unfolding position (42121) and the second unfolding position (43121), the left rear leg frame (4211) and the right rear leg frame (4311) are in a relatively unfolded state;

the left rotating sheet (4212) is provided with a first folding position (42122), the right rotating sheet (4312) is provided with a second folding position (43122), and when the second locking mechanism (7) is simultaneously locked with the first folding position (42122) and the second folding position (43122), the left rear leg frame (4211) and the right rear leg frame (4311) are close to each other and folded;

the second locking mechanism (7) comprises a positioning part (71) connected in the frame body (41), the positioning part (71) can be relatively unfolded and locked on the frame body (41) when being inserted into the first unfolding position (42121) and the second unfolding position (43121) at the same time, the positioning part (71) can be relatively folded in the left rotating sheet (4212) and the right rotating sheet (4312) when being inserted into the first folding position (42122) and the second folding position (43122) at the same time, the positioning part (71) can be relatively folded in the left rotating sheet (4212) and the right rotating sheet (4312) and locked on the frame body (41), the frame body (41) is also internally provided with a pressing unlocking part (72) which can drive the positioning part (71) to slide downwards relative to the frame body (41) when the positioning part slides longitudinally relative to the frame body (41) and can be simultaneously disengaged from the first unfolding position (42121) and the second unfolding position (43121) or the first folding position (42122) and the second folding position (43122), and the frame body (41) is also internally provided with a connecting part (62) which can slide upwards relative to slide relative to the frame body (41) The push-pull type bicycle frame is characterized in that the push-pull type bicycle frame comprises a driving piece (73) which transversely moves relative to a frame body (41) to drive a push-release piece (72) to downwards slide relative to the frame body (41), and an elastic push-pull piece (74) which can enable a positioning piece (71) to be kept and clamped in a first unfolding position (42121) and a second unfolding position (43121) or a first folding position (42122) and a second folding position (43122) simultaneously is arranged between the push-release piece (72) and the frame body (41).

9. The children's tricycle of claim 8, wherein: the driving piece (73) comprises a driving block (731), a fourth inclined sliding surface (732) is arranged on the driving block (731), and a fifth inclined sliding surface (623) which can be matched with the fourth inclined sliding surface (732) and drives the driving block (731) to transversely move when the connecting block (621) slides upwards relative to the frame body (41) is arranged on the connecting block (621);

the pressing unlocking piece (72) comprises a pressing unlocking piece (721) penetrating out of the frame body (41), a sixth inclined sliding surface (722) is arranged on the pressing unlocking piece (721), and a seventh inclined sliding surface (733) which can be matched with the sixth inclined sliding surface (722) and can drive the pressing unlocking piece (721) to slide downwards when the driving piece (731) moves transversely relative to the frame body (41) is arranged on the driving piece (731);

the positioning piece (71) comprises a positioning block (711), the positioning block (711) penetrates through the press unlocking block (721), a boss (712) is arranged on the lower portion of the positioning block (711), and a pressing surface (723) which can be matched with the boss (712) and can press the boss (712) when the press unlocking block (721) slides downwards relative to the frame body (41) so as to enable the boss (712) to be separated from the first unfolding position (42121) and the second unfolding position (43121) or the first folding position (42122) and the second folding position (43122) simultaneously is arranged on the press unlocking block (721).

10. The children's tricycle of claim 2, wherein: the left rear wheel (422) can rotate to the inner side of the left rear leg frame (4211) from the outer side of the left rear leg frame (4211), a first locking structure (8) capable of locking the left rear leg frame (4211) and the left rear wheel (422) is arranged between the left rear leg frame (4211) and the left rear wheel (422), the first locking structure (8) comprises an upper left shell (81) arranged on the left rear wheel (422) and a lower left shell (82) arranged on the left rear leg frame (4211), a left accommodating cavity (83) is formed by enclosing the upper left shell (81) and the lower left shell (82), left spline grooves (84) are formed in the upper left shell (81) and the lower left shell (82), a left spline (85) capable of sliding up and down relative to the upper left shell (81) and the lower left shell (82) and simultaneously clamping with the left spline grooves (84) in the upper left shell (81) and the lower left shell (82) is connected to a left spline piece (85) capable of separating from the left spline grooves (86) after being pressed A left reset spring (87) which can reset the left spline (85) is connected between the left spline (85) and the left lower shell (82);

the rear right wheel (432) can rotate to the inner side of the rear right leg frame (4311) from the outer side of the rear right leg frame (4311), a second locking structure (9) capable of locking the rear right leg frame (4311) and the rear right wheel (432) is arranged between the rear right leg frame (4311) and the rear right wheel (432), the second locking structure (9) comprises an upper right shell (91) arranged on the rear right wheel (432) and a lower right shell (92) arranged on the rear right leg frame (4311), the upper right shell (91) and the lower right shell (92) are enclosed to form a right accommodating cavity (93), right spline grooves (94) are formed in the upper right shell (91) and the lower right shell (92), a right spline (95) capable of sliding up and down relative to the upper right shell (91) and the lower right shell (92) and capable of being clamped with the right spline grooves (94) in the upper right shell (91) and the lower right shell (92) simultaneously is connected to a right spline (95) pressing piece (91) capable of separating from the upper right spline (96) after pressing ) And a right return spring (97) capable of enabling the right spline (95) to return is connected between the right spline (95) and the right lower shell (92).