CN110001845B - Folding tricycle - Google Patents
Folding tricycle Download PDFInfo
- Publication number
- CN110001845B CN110001845B CN201910192430.0A CN201910192430A CN110001845B CN 110001845 B CN110001845 B CN 110001845B CN 201910192430 A CN201910192430 A CN 201910192430A CN 110001845 B CN110001845 B CN 110001845B
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- frame
- locking
- saddle
- connecting frame
- folding
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- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K15/00—Collapsible or foldable cycles
- B62K15/006—Collapsible or foldable cycles the frame being foldable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K9/00—Children's cycles
- B62K9/02—Tricycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motorcycle And Bicycle Frame (AREA)
Abstract
The invention discloses a folding tricycle, the frame of which comprises a front frame, a rear frame and a saddle, wherein the front frame at least comprises a front fork, a front wheel arranged at the lower part of the front fork, a handle arranged at the upper part of the front fork and used for controlling the steering of the front wheel, the lower part of the rear frame is provided with a rear wheel, the frame also comprises a connecting frame arranged between the front frame and the rear frame, the connecting frame extends along the front-rear direction, the front part of the connecting frame is rotationally connected with the front frame and is locked by a front locking mechanism, the rear part of the connecting frame is rotationally connected with the upper part of the rear frame and is locked by a rear locking mechanism, the saddle is arranged on the rear frame, when the frame is in a folded state, the rear part of the connecting frame is upwards erected, the front bracket, the connecting frame and the rear bracket are mutually closed along the front-rear direction, and the saddle is folded at the rear side of the rear bracket. The folding tricycle is convenient to fold and open, small in folding size and convenient to carry, store and store.
Description
Technical Field
The invention relates to a folding tricycle.
Background
The children tricycle in the prior art comprises a front fork, a front wheel arranged at the bottom of the front fork, a handlebar arranged on the front fork and capable of controlling the front wheel to turn, a rear frame, a saddle arranged on the rear frame and a rear wheel arranged at the rear part of the bottom of the rear frame. Most of the tricycles in the prior art cannot be folded, or the folded structure is not compact enough, so that the tricycles are inconvenient to store and transport.
Disclosure of Invention
The invention aims to provide a novel folding tricycle.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a foldable tricycle, includes the frame that has expansion state and folding state, the frame includes preceding frame, back frame to and the saddle, preceding frame includes the front fork at least, locates the front wheel of front fork lower part, locate front fork upper portion just is used for controlling the handlebar that the front wheel turned to, the lower part of back frame is provided with the rear wheel, the frame still including setting up preceding frame with link between the back frame, the link extends along the fore-and-aft direction, the front portion of link with preceding frame rotationally connects and locks through preceding locking mechanical system between the two, the rear portion of link with the upper portion of back frame rotationally connects and locks through back locking mechanical system between the two, the saddle is located on the back frame, when the frame is in the folding state, the rear portion of link upstroke, preceding frame the link with the back frame is in the fore-and-aft direction each other, the saddle is in the rear side of back frame draws in.
Preferably, a linkage assembly is arranged between the front locking mechanism and the rear locking mechanism, and the linkage assembly drives the rear locking mechanism to unlock in the process of rotating and folding the front frame relative to the connecting frame.
Further, the front portion of the connecting frame is rotationally connected with the front frame through a rotating shaft, an unlocking sliding block capable of driving the rear locking mechanism to unlock when sliding is arranged on the rear frame, the linkage assembly comprises a driving piece arranged between the connecting frame and the front frame and a traction rope connected between the driving piece and the unlocking sliding block, the connecting frame rotates relative to the front frame to enable the front frame and the connecting frame to be mutually folded, and the driving piece rotates around the rotating shaft to drive the rear locking mechanism to unlock.
Still further, the front locking mechanism includes locking joint, locking joint includes first joint seat, second joint seat, locking fluted disc and elastic component, first joint seat with one of them with preceding frame fixed connection of second joint seat, another one is fixedly connected in the front portion of link, first joint seat, locking fluted disc and second joint seat are around the axis of rotation rotationally connected, the elastic component is located first joint seat with between the locking fluted disc, first joint seat is last to have a plurality of first tooth's socket along circumference interval distribution, second joint seat is last to have a plurality of locking tooth's socket along circumference interval distribution, locking fluted disc's outside circumference is last to have a plurality of locking tooth along circumference interval distribution, when locking mechanism is in the locked state, locking tooth's both ends are respectively inserted and are established in first and second tooth's socket, when locking mechanism is in the unlocked state, locking tooth breaks away from in the second tooth's socket, driving tooth's socket can be followed the axis of rotation sets up locking fluted disc and rotation when locking fluted disc and the rotation by a locking fluted disc can be locked by the first tooth's socket and the rotation of driving mechanism.
As a specific implementation mode, the driving piece comprises a mounting ring which can be rotatably sleeved on the rotating shaft and a rotating block which is fixed on one side part of the mounting ring, the traction rope is connected between the rotating block and the unlocking sliding block, a limiting groove is formed in the peripheral part of the locking fluted disc, and the rotating block is positioned in the limiting groove.
Further, the back locking mechanism includes locating locking slider on the link, locate locking pin on the locking slider, set up in back frame upper portion and be used for with locking pin complex lockhole, the slip direction of locking slider with the slip direction mutually perpendicular of unlocking slider, be provided with the unblock inclined plane on the unlocking slider, be provided with on the locking slider with unblock inclined plane complex cooperation inclined plane, the unlocking slider with still be provided with between the locking slider and be used for driving the locking slider is kept away from the spring of the required elastic force of unlocking slider motion.
Preferably, the front part of the saddle is rotatably connected to the rear frame, the saddle has an open state and a retracted state relative to the rear frame, and when the saddle is switched from the open state to the retracted state, the rear part of the saddle is lowered relative to the height of the rear frame and is folded with the rear frame.
Preferably, the front part of the saddle is rotatably connected to the rear frame, the rear part of the saddle is provided with a saddle support extending downwards, the rear frame is provided with a support block capable of being supported below the saddle support, the support block is movably arranged on the rear frame, the saddle has an open state and a retracted state relative to the rear frame, and when the saddle is in the open state, the support block is supported below the saddle support; when the saddle is in a folded state, the supporting block is separated from the lower part of the saddle support piece so that the saddle is folded relative to the rear frame.
Further, the supporting block is slidably arranged on the rear frame, a top tongue capable of driving the supporting block to slide when sliding is also slidably arranged on the rear frame, when the frame is in a unfolding state, the top tongue is arranged at the rear part of the connecting frame in a pushing mode, and the supporting block is matched with the saddle support piece; when the frame is in a folding state, the top tongue is separated from the rear part of the connecting frame and drives the supporting block to slide so that the supporting block is far away from the lower part of the saddle supporting block.
Still further, the rear portion of top tongue is provided with the slide pin, offer on the supporting shoe and supply the slide groove that the slide pin passed through with sliding fit, still be provided with between top tongue with the supporting shoe and be used for providing the first elastic component of the required elastic force of relative keeping away from between the two, top tongue with be provided with between the back frame and be used for driving the top tongue is kept away from the second elastic component of the direction motion of supporting shoe.
As a specific implementation mode, the rear frame is provided with a rear frame pipe connected with the connecting frame, the supporting block is slidably arranged in the pipe cavity of the rear frame pipe, the rear frame pipe is also provided with an opening groove communicated with the pipe cavity, and the lower part of the saddle support piece is inserted into the opening groove and matched with the supporting block.
As a specific implementation mode, the rear frame comprises a rear car pipe connected with the connecting frame, and two groups of rear supporting rods which are respectively arranged at the left side and the right side and extend along the up-down direction, the lower part of each group of rear supporting rods is provided with the rear wheel, the two groups of rear supporting rods are integrally arranged to form a U-shaped rod with a downward opening, the rear car pipe extends along the front-back direction, and the upper part of the U-shaped rod and the rear part of the rear car pipe are relatively fixedly arranged.
Preferably, the front frame further includes a front vertical pipe extending in an up-down direction, an upper portion of the front fork is rotatably connected to the front vertical pipe about its own axis, and a front portion of the connection frame is rotatably connected to the front vertical pipe.
Preferably, a folding locking structure is further arranged between the rear frame and the connecting frame, and when the frame is in a folded state, the folding locking structure locks when the rear frame and the connecting frame are mutually close, so that the rear frame and the connecting frame are relatively fixed.
Preferably, the front locking mechanism has a locking state and an unlocking state, and when the frame is in the unfolded state and the folded state, the front locking mechanism is in the locking state so that the connecting frame and the front frame are relatively fixed.
Further, the front locking mechanism comprises a locking joint, the locking joint comprises a first joint seat, a second joint seat, a locking fluted disc and an elastic piece, one of the first joint seat and the second joint seat is fixedly connected with the front frame, the other is fixedly connected with the front part of the connecting frame, the first joint seat, the locking fluted disc and the second joint seat are rotationally connected around the same rotation center line, the elastic piece is arranged between the first joint seat and the locking fluted disc, a plurality of first tooth grooves distributed along the circumferential direction at intervals are arranged on the first joint seat, a plurality of second tooth grooves distributed along the circumferential direction at intervals are arranged on the second joint seat, a plurality of locking teeth distributed along the circumferential direction at intervals are arranged on the outer circumference of the locking fluted disc, when the front locking mechanism is in a locking state, two ends of the locking teeth are respectively inserted into the first tooth grooves and the second tooth grooves, and when the front locking mechanism is in an unlocking state, the locking teeth are separated from the second tooth grooves.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the folding tricycle of the invention is characterized in that the connecting frame is rotationally connected between the front frame and the rear frame, when the tricycle is folded, the front frame and the rear frame are respectively rotated and folded relative to the connecting frame, so that the folding of the frame can be realized.
Drawings
FIG. 1 is a perspective view of the folding tricycle of the present invention in an unfolded state;
FIG. 2 is a second perspective view of the folding tricycle of the present invention in an unfolded state;
FIG. 3 is a side view of the folding tricycle of the present invention in an unfolded state;
FIG. 4 is a schematic view in longitudinal section of FIG. 3;
FIG. 5 is a schematic exploded view of the folding tricycle of the present invention;
FIG. 6 is an exploded view of the front locking mechanism of the folding tricycle of the present invention;
FIG. 7 is an exploded view of the rear lock mechanism of the folding tricycle of the present invention;
FIG. 8 is an exploded schematic view of the saddle support assembly in the folding tricycle of the present invention;
FIG. 9 is a side view of the folding tricycle of the present invention after a first folding step;
FIG. 10 is a schematic view in longitudinal section of FIG. 9;
FIG. 11 is a side view of the folding tricycle of the present invention after a second fold;
FIG. 12 is a schematic view in longitudinal section of FIG. 11;
FIG. 13 is a side view of the folding tricycle of the present invention after a third fold;
FIG. 14 is a schematic view in longitudinal section of FIG. 13;
FIG. 15 is a perspective view of the folding tricycle of the present invention in a folded position;
FIG. 16 is a second perspective view of the folding tricycle of the present invention in a folded position;
Wherein:
1. a front frame; 10. a front wheel; 11. a front fork; 12. a handle bar; 13. a front riser; 14. foot pedal;
2. A rear frame; 20. a rear wheel; 21. a rear vehicle tube; 21a, an open slot; 22. a rear strut;
3. a connecting frame;
4. A saddle; 41. a saddle support;
5. A front locking mechanism; 50. a rotating shaft; 51. a first joint seat; 52. a second joint seat; 53. locking the fluted disc; 53a, locking teeth; 53b, a limit groove; 54. an elastic member (spring); 55. an unlock button;
6. a rear locking mechanism; 60. a rotation shaft; 61. a locking slide; 62. a locking pin; 63. unlocking the sliding block; 64. a spring; 65. unlocking the inclined plane; 66. matching with the inclined plane; 67. a lock hole;
7. a linkage assembly; 71. a driving member; 71a, a mounting ring; 71b, a rotating block; 72. a traction cable;
8. A saddle support assembly; 81. a support block; 82. a top tongue; 83. a first elastic member; 84. a second elastic member; 85. a chute; 86. a slide pin; 87. fixing the guide sleeve;
9. Folding locking structure.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.
Referring to fig. 1 to 16, a folding tricycle includes a frame having an unfolded state and a folded state, the frame including a front frame 1, a rear frame 2, a connection frame 3 connected between the front frame 1 and the rear frame 2, and a saddle 4 provided on the rear frame 2, wherein the connection frame 3 extends in a front-rear direction, a front portion of the connection frame 3 is rotatably connected with the front frame 1, and a rear portion of the connection frame 3 is rotatably connected with an upper portion of the rear frame 2.
A front locking mechanism 5 is arranged between the front part of the connecting frame 3 and the front frame 1, a rear locking mechanism 6 is arranged between the connecting frame 3 and the upper part of the rear frame 2, and a linkage assembly 7 is arranged between the front locking mechanism 5 and the rear locking mechanism 6, so that the rear frame 2 can rotate relative to the connecting frame 3 to further fold the frame in the process that the front frame 1 is folded relative to the connecting frame 3 in a rotating way, and the linkage assembly 7 can drive the rear locking mechanism 6 to unlock.
Referring to the drawings, the front frame 1 comprises a front fork 11, a front wheel 10 arranged at the bottom of the front fork 11, a handlebar 12 arranged at the upper part of the front fork 11 and used for controlling the steering of the front wheel 10, and pedals 14 are arranged on two sides of a wheel shaft of the front wheel 10 for children to tread to drive the front wheel 10 to rotate. The front frame 1 further includes a front vertical tube 13 extending in the up-down direction, and an upper portion of the front fork 11 is rotatably connected to the front vertical tube 13 about its own axis. The front part of the connecting frame 3 is rotatably connected with the front frame 1 by being rotatably connected with the front vertical pipe 13.
Referring to the drawings, the rear frame 2 has a rear tube 21 connected to the connecting frame 3, and two sets of rear struts 22 respectively provided on the left and right sides and extending in the up-down direction, and the lower portion of each set of rear struts 22 is provided with a rear wheel 20, where the two sets of rear struts 22 are integrally provided as a U-shaped rod with a downward opening, the rear tube 21 extends in the front-rear direction, and the upper portion of the U-shaped rod and the rear portion of the rear tube 21 are relatively fixedly provided, and the rear tube 21 and the U-shaped rod can be integrally formed or fixedly connected to each other to be fixed when specifically provided. The front part of the rear vehicle tube 21 is rotatably connected with the rear part of the connecting frame 3, thereby realizing the rotary connection of the rear vehicle frame 2 and the connecting frame 3.
The connecting frame 3 is here provided as a hollow tube extending in front and rear, the front part of the connecting frame 3 being rotatably connected to the front riser tube 13 in the front frame 1 via a rotation shaft 50, the rear part of the connecting frame 3 being rotatably connected to the front part of the rear tube 21 in the rear frame 2 via a rotation shaft 60. The front locking mechanism 5 is provided between the front riser 13 and the link 3, and the rear locking mechanism 6 is provided between the rear vehicle pipe 21 and the link 3. In this embodiment, the rear frame 2 is provided with an unlocking slide block 63 capable of driving the rear locking mechanism 6 to unlock when sliding, the linkage assembly 7 includes a driving member 71 disposed between the connecting frame 3 and the front frame 1, and a traction cable 72 connected between the driving member 71 and the unlocking slide block 63, when the connecting frame 3 rotates relative to the front frame 1 to rotate and fold the front frame 1 relative to the connecting frame 3, the driving member 71 rotates around the rotation shaft 50, so that the traction cable 72 is tensioned, and the unlocking slide block 63 is pulled to slide to unlock the rear locking mechanism 6.
More specifically, referring to fig. 3 to 14, the front locking mechanism 5 includes a locking joint including a first joint seat 51, a second joint seat 52, a locking fluted disc 53, and an elastic member 54, one of the first joint seat 51 and the second joint seat 52 is fixedly connected with the front riser 13, the other is fixedly connected with the front portion of the connection frame 3, where the first joint seat 51 is fixedly arranged at the rear portion of the front riser 13, and the second joint seat 52 is fixedly arranged at the front portion of the connection frame 3. The first joint base 51, the second joint base 52, and the locking fluted disc 53 are rotatably connected around the rotation shaft 50. The elastic member 54 is a spring, which is disposed between the first joint seat 51 and the locking fluted disc 53. As shown in fig. 6, the first joint seat 51 has a plurality of first tooth grooves distributed at intervals along the circumferential direction, the second joint seat 52 has a plurality of second tooth grooves distributed at intervals along the circumferential direction, the outer circumferential portion of the locking fluted disc 53 has a plurality of locking teeth 53a distributed at intervals along the circumferential direction, and when the front locking mechanism 5 is in a locked state, both ends of the locking teeth 53a are respectively inserted into the first tooth grooves and the second tooth grooves; when the front locking mechanism 5 is in the unlocked state, the locking teeth 53a are disengaged from the second tooth grooves. The locking joint further comprises an unlocking button 55 slidably arranged on the outer side of the second joint seat 52, and the locking fluted disc 53 can be driven to be separated from the second tooth socket against the acting force of the elastic piece 54 by pressing the unlocking button 55 so as to unlock the front locking mechanism 5.
The driving member 71 is rotatably provided between the locking toothed disc 53 and the first joint seat 51 about the rotation shaft 50 and is rotated by the locking toothed disc 53 after the front locking mechanism 5 is unlocked. Specifically, referring to fig. 4, 6 and 10, the driving member 71 includes a mounting ring 71a rotatably sleeved on the rotation shaft 50, a rotation block 71b fixed on a side portion of the mounting ring 71a, a traction cable 72 connected between the rotation block 71b and the unlocking slide block 63, and a limit groove 53b formed in a peripheral portion of the locking fluted disc 53, the rotation block 71b being located in the limit groove 53 b. Thus, after the front locking mechanism 5 is unlocked, as shown in fig. 10, the front frame 1 is driven to rotate relative to the connecting frame 3, the first joint seat 51 drives the locking fluted disc 53 to rotate along with the front frame, and when the groove wall of the limiting groove 53b abuts against the rotating block 71b after a certain angle of rotation, the rotating block 71b is driven to rotate together, so that the traction cable 72 is tensioned to pull the unlocking sliding block 63 to move forwards, and the rear locking mechanism 6 is unlocked.
In this embodiment, the locking joint is used as the front locking mechanism 5, which not only can be used for relatively locking the front frame 1 and the connecting frame 3 in the unfolded state of the frame, but also can relatively lock the front frame 1 and the connecting frame 3 after the frame is folded, i.e. after the front frame 1 and the connecting frame 3 are relatively rotated and folded. That is, the front locking mechanism 5 is in a locked state regardless of whether the frame is in an unfolded state or a folded state, so that the front frame 1 and the link frame 3 are kept locked to each other.
Referring to fig. 3 to 14, the rear locking mechanism 6 includes a locking slide 61 provided on the connection frame 3, a lock pin 62 provided on the locking slide 61, and a lock hole 67 provided on an upper portion of the rear frame 2 and adapted to cooperate with the lock pin 62, wherein a sliding direction of the locking slide 61 and a sliding direction of the unlocking slide 63 are perpendicular to each other, and when specifically provided, the locking slide 61 and the unlocking slide 63 are both provided in a lumen of the connection frame 3. The unlocking slide block 63 is provided with an unlocking inclined plane 65, the locking slide block 61 is provided with a matching inclined plane 66 matched with the unlocking inclined plane 65, and a spring 64 for driving the locking slide block 61 to move away from the unlocking slide block 63 with required elastic force is arranged between the unlocking slide block 63 and the locking slide block 61. When the rear locking mechanism 6 is in a locked state, the lock pin 62 is cooperatively inserted into the lock hole 67 under the action of the spring 64 so that the connecting frame 3 is fixed with the rear frame 2; when the unlocking slide block 63 moves forward, the unlocking inclined plane 65 cooperates with the cooperation inclined plane 66 to drive the locking slide block 61 to move so as to disengage the locking pin 62 from the locking hole 67, unlock the rear locking mechanism 6, and enable the rear frame 2 to rotate around the rotating shaft 60 relative to the connecting frame 3 for folding.
In this embodiment, a folding locking structure 9 is further disposed between the rear frame 2 and the connecting frame 3, and the folding locking structure 9 locks when the rear frame 2 and the connecting frame 3 are close to each other, so that the rear frame 2 and the connecting frame 3 are kept relatively fixed.
As shown in fig. 3 to 14, the front part of the saddle 4 is rotatably connected to the rear frame 2, where the front part of the saddle 4 is rotatably connected to the rear frame 2 by a rotation shaft 60, the rear part of the saddle 4 is provided with a saddle support 41 extending downward, the rear frame 2 is provided with a saddle support assembly 8, the saddle support assembly 8 has at least a support block 81 for cooperating with the saddle support 41, and the support block 81 is movably provided on the rear frame 2. The saddle 4 has an open state and a retracted state with respect to the rear frame 2, and when the saddle 4 is in the open state, the lower portion of the saddle support 41 is supported on the support block 81, as shown in fig. 3 and 4; when the saddle is in the stowed condition, the support blocks 81 are disengaged from under the saddle support 41 so that the height of the rear portion of the saddle 4 relative to the rear frame 2 is reduced, thereby bringing the saddle 4 and the rear frame 2 together.
Thus, in the expanded condition of the frame, the user can lift the saddle 4 to a relatively high position to provide comfortable sitting support for children, and in the folded condition of the frame, the saddle 4 can be folded over relative to the rear frame 2 to further reduce the folded volume of the frame.
In this embodiment, the supporting block 81 is slidably disposed on the rear frame 2, and the rear frame 2 is further slidably provided with a top tongue 82, where the top tongue 82 can drive the supporting block 81 to slide when sliding, and when the frame is in a unfolded state, the top tongue 82 is disposed on the rear portion of the connecting frame 3 in a propped manner, and at this time, the supporting block 81 and the saddle support 41 are mutually matched; when the frame is in the folded state, the top tongue 82 is separated from the rear part of the connecting frame 3 and drives the support block 81 to slide forward together so that the support block 81 is far below the saddle support 41.
Referring specifically to fig. 8, 10, 12, 14, the front portion of the rear tube 21 of the rear frame 2 is fixedly provided with a fixed guide sleeve 87 to provide a tongue 82 for sliding guiding and restraining. The support block 81 is slidably disposed in the lumen of the rear car tube 21, and the rear car tube 21 is further provided with an open groove 21a communicating with the lumen thereof, and the lower portion of the saddle support 41 is fitted with the support block 81 by being inserted into the open groove 21 a.
The rear part of the top tongue 82 is provided with a sliding pin 86, the supporting block 81 is provided with a sliding groove 85 for the sliding pin 86 to penetrate in a sliding fit manner, a first elastic piece 83 for providing a relatively far away elastic force is arranged between the top tongue 82 and the supporting block 81, and a second elastic piece 84 for driving the top tongue 82 to move in a direction far away from the supporting block 81 is arranged between the top tongue 82 and the rear frame 2. Here, the first elastic member 83 and the second elastic member 84 are springs.
When the connecting frame 3 and the rear frame 2 are not yet rotated and folded, as shown in fig. 4 and 10, under the action of the second elastic member 84, the top tongue 82 is abutted against the rear portion of the connecting frame 3, specifically against the rear portion of the locking slider 61, and at this time, the supporting block 81 is located below the saddle support 41 and provides stable support for the saddle support; when the connecting frame 3 is rotated and folded relative to the rear frame 2, as shown in fig. 12, the rear portion of the connecting frame 3 and the front portion of the rear frame 2 are separated from each other, so that the top tongue 82 slides forward under the action of the second elastic member 84, and drives the support block 81 to slide forward and gradually separate from the lower portion of the saddle support 41, finally, as shown in fig. 14, the saddle 4 is manually rotated, the saddle support 41 further pushes the support block 81 forward to slide forward, so that the saddle 4 is folded relative to the rear frame 2, and the support block 81 is blocked on the side portion of the saddle support 41 under the action of the first elastic member 83, so that the saddle support is kept in a folded state relative to the rear frame 2.
In the unfolded state, as shown in fig. 1 to 4, the front locking mechanism 5 and the rear locking mechanism 6 are both in a locked state, and the saddle 4 is in an opened state relative to the rear frame 2. When the tricycle needs to be folded, the unlocking button 55 is operated to unlock the front locking mechanism 5, and then the front frame 1 is driven to turn over relative to the connecting frame 3 around the rotating shaft 50, as shown in fig. 9 and 10, in the process, the linkage assembly 7 drives the unlocking slide block 63 to slide forwards so that the rear locking mechanism 6 is unlocked in a linkage way; then, the front frame 1 and the connecting frame 3 are folded around the rotating shaft 60 relative to the rear frame 2, as shown in fig. 11 and 12, at this time, the top tongue 82 is separated from the rear part of the connecting frame 3, and drives the supporting block 81 to slide forward to separate from the lower part of the saddle support 41; finally, the saddle 4 is pressed downwards to be folded relative to the rear frame 2, as shown in fig. 13 and 14, the folding of the tricycle frame is completed, the whole folded tricycle is shown in fig. 15 and 16, the front wheel 10 and the rear wheel 20 are supported on the ground together, the rear part of the connecting frame 3 is in an upward and vertical state, the front frame 1, the connecting frame 3 and the rear frame 2 are mutually closed along the front and rear directions, the front frame 1 and the connecting frame 3 and the rear frame 2 are relatively locked, the saddle 4 is folded at the rear side of the rear frame 2, a very compact structure is shown, the size of the folding tricycle is very small, and the folding tricycle is convenient to store and carry.
When the tricycle is required to be unfolded, the user can operate according to the following steps: the locking of the folding locking structure 9 is released, the rear frame 2 is rotated and opened relative to the connecting frame 3, then the unlocking button 55 is pressed to unlock the front locking mechanism 5, the front frame 1 is driven to rotate and open relative to the connecting frame 3, the driving piece 71 in the linkage piece 7 is also gradually reset, the unlocking slide block 63 is also gradually reset, and the rear locking mechanism 6 is locked again. Finally, the saddle 4 is lifted upwards, the supporting blocks 81 are reset to form stable support for the saddle support 41 below the saddle 4, and the frame is unfolded.
In conclusion, the folding tricycle is convenient to fold and unfold, has small folding volume and is convenient to carry, store and store.
The above references to front, rear, up, down, etc. are all defined with reference to the orientation of the tricycle as viewed by a child when the tricycle is in the extended position for use by the child.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (12)
1. The utility model provides a foldable tricycle, includes the frame that has expansion state and folding state, the frame includes preceding frame, back frame to and the saddle, preceding frame includes the front fork at least, locates the front wheel of front fork lower part, locate front fork upper portion just is used for controlling the handlebar that the front wheel turned to, the lower part of back frame is provided with the rear wheel, its characterized in that: the frame also comprises a connecting frame arranged between the front frame and the rear frame, the connecting frame extends along the front-rear direction, the front part of the connecting frame is rotationally connected with the front frame and is locked by a front locking mechanism, the rear part of the connecting frame is rotationally connected with the upper part of the rear frame and is locked by a rear locking mechanism, the saddle is arranged on the rear frame, when the frame is in a folding state, the rear part of the connecting frame is upwards erected, the front frame, the connecting frame and the rear frame are mutually closed along the front-rear direction, the saddle is folded at the rear side of the rear frame, a linkage assembly is arranged between the front locking mechanism and the rear locking mechanism, the linkage assembly drives the rear locking mechanism to unlock in the process of rotationally folding the front frame relative to the connecting frame, wherein,
The front part of the connecting frame is rotationally connected with the front frame through a rotating shaft, the rear frame is provided with an unlocking slide block capable of driving the rear locking mechanism to unlock when sliding, the linkage assembly comprises a driving piece arranged between the connecting frame and the front frame and a traction rope connected between the driving piece and the unlocking slide block, the connecting frame rotates relative to the front frame to enable the front frame and the connecting frame to be mutually folded, the driving piece rotates around the rotating shaft to drive the rear locking mechanism to unlock,
The front locking mechanism comprises a locking joint, the locking joint comprises a first joint seat, a second joint seat, a locking fluted disc and an elastic piece, one of the first joint seat and the second joint seat is fixedly connected with the front frame, the other is fixedly connected with the front part of the connecting frame, the first joint seat, the locking fluted disc and the second joint seat are rotationally connected around the rotating shaft, the elastic piece is arranged between the first joint seat and the locking fluted disc, the first joint seat is provided with a plurality of first tooth grooves distributed along the circumferential direction at intervals, the second joint seat is provided with a plurality of second tooth grooves distributed along the circumferential direction at intervals, when the front locking mechanism is in a locking state, two ends of the locking tooth are respectively inserted into the first tooth grooves and the second tooth grooves, when the front locking mechanism is in an unlocking state, the locking tooth is separated from the second tooth grooves,
The driving piece can rotate around the rotating shaft, is arranged between the locking fluted disc and the first joint seat, and is driven to rotate by the locking fluted disc when the front locking mechanism is unlocked.
2. The folding tricycle of claim 1, wherein: the driving piece comprises a mounting ring which can be rotatably sleeved on the rotating shaft, and a rotating block which is fixed on one side part of the mounting ring, wherein the traction rope is connected between the rotating block and the unlocking sliding block, a limiting groove is formed in the peripheral part of the locking fluted disc, and the rotating block is positioned in the limiting groove.
3. The folding tricycle of claim 1, wherein: the rear locking mechanism comprises a locking slide block arranged on the connecting frame, a locking pin arranged on the locking slide block, and a locking hole which is arranged on the upper portion of the rear frame and is used for being matched with the locking pin, the sliding direction of the locking slide block is mutually perpendicular to that of the unlocking slide block, an unlocking inclined plane is arranged on the unlocking slide block, a matching inclined plane matched with the unlocking inclined plane is arranged on the locking slide block, and a spring for driving the locking slide block to be far away from the unlocking slide block to move by the elastic force is further arranged between the unlocking slide block and the locking slide block.
4. The folding tricycle of claim 1, wherein: the front part of the saddle is rotationally connected to the rear frame, the saddle has an open state and a retracted state relative to the rear frame, and when the saddle is switched from the open state to the retracted state, the height of the rear part of the saddle relative to the rear frame is reduced to be mutually retracted with the rear frame.
5. The folding tricycle of claim 1, wherein: the front part of the saddle is rotationally connected to the rear frame, a saddle support piece extending downwards is arranged at the rear part of the saddle, a support block capable of being supported below the saddle support piece is arranged on the rear frame, the support block is movably arranged on the rear frame, the saddle has an open state and a retracted state relative to the rear frame, and when the saddle is in the open state, the support block is supported below the saddle support piece; when the saddle is in a folded state, the supporting block is separated from the lower part of the saddle support piece so that the saddle is folded relative to the rear frame.
6. The folding tricycle of claim 5 wherein: the support block is arranged on the rear frame in a sliding manner, a top tongue capable of driving the support block to slide when sliding is also arranged on the rear frame in a sliding manner, and when the frame is in a unfolding state, the top tongue is arranged at the rear part of the connecting frame in a propping manner, and the support block is matched with the saddle support piece; when the frame is in a folding state, the top tongue is separated from the rear part of the connecting frame and drives the supporting block to slide so that the supporting block is far away from the lower part of the saddle supporting block.
7. The folding tricycle of claim 6, wherein: the rear part of the top tongue is provided with a sliding pin, the supporting block is provided with a sliding groove for the sliding pin to penetrate through in a sliding fit manner, a first elastic piece for providing a required elastic force for the top tongue and the supporting block to be relatively far away from each other is further arranged between the top tongue and the supporting block, and a second elastic piece for driving the top tongue to move in a direction far away from the supporting block is arranged between the top tongue and the rear frame.
8. The folding tricycle of any one of claims 5 to 7 wherein: the rear frame is provided with a rear car pipe connected with the connecting frame, the supporting block is slidingly arranged in the pipe cavity of the rear car pipe, the rear car pipe is also provided with an opening groove communicated with the pipe cavity of the rear car pipe, and the lower part of the saddle support piece is inserted into the opening groove to be matched with the supporting block.
9. The folding tricycle of claim 1, wherein: the rear frame comprises a rear car pipe connected with the connecting frame, and two groups of rear supporting rods which are respectively arranged at the left side and the right side and extend along the vertical direction, the lower part of each group of rear supporting rods is provided with a rear wheel, the two groups of rear supporting rods are integrally arranged to form a U-shaped rod with a downward opening, the rear car pipe extends along the front-rear direction, and the upper part of the U-shaped rod is fixedly arranged relative to the rear part of the rear car pipe.
10. The folding tricycle of claim 1, wherein: the front frame also comprises a front vertical pipe extending along the up-down direction, the upper part of the front fork can be rotationally connected with the front vertical pipe around the axis of the front fork, and the front part of the connecting frame is rotationally connected with the front vertical pipe.
11. The folding tricycle of claim 1, wherein: and a folding locking structure is further arranged between the rear frame and the connecting frame, and when the frame is in a folding state, the rear frame and the connecting frame are mutually closed, and the folding locking structure is locked so that the rear frame and the connecting frame are relatively fixed.
12. The folding tricycle of claim 1, wherein: the front locking mechanism is provided with a locking state and an unlocking state, and when the frame is in an unfolding state and a folding state, the front locking mechanism is in the locking state so that the connecting frame and the front frame are relatively fixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192430.0A CN110001845B (en) | 2019-03-14 | 2019-03-14 | Folding tricycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192430.0A CN110001845B (en) | 2019-03-14 | 2019-03-14 | Folding tricycle |
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| CN110001845A CN110001845A (en) | 2019-07-12 |
| CN110001845B true CN110001845B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910192430.0A Active CN110001845B (en) | 2019-03-14 | 2019-03-14 | Folding tricycle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879024A (en) * | 2019-11-19 | 2020-03-13 | 江西洪都航空工业集团有限责任公司 | Single-handle folding wheel |
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| CN110001845A (en) | 2019-07-12 |
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