CN103129667A - Front-driving rear-steering kid tricycle with differential function - Google Patents
Front-driving rear-steering kid tricycle with differential function Download PDFInfo
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- CN103129667A CN103129667A CN2013101041038A CN201310104103A CN103129667A CN 103129667 A CN103129667 A CN 103129667A CN 2013101041038 A CN2013101041038 A CN 2013101041038A CN 201310104103 A CN201310104103 A CN 201310104103A CN 103129667 A CN103129667 A CN 103129667A
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- wheel
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- open slot
- differential function
- before driving
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Abstract
A front-driving and rear-steering kid tricycle with a differential function comprises a main tricycle frame and a auxiliary tricycle frame arranged at the front end of the main tricycle frame, wherein pedal shafts are rotatably installed on the top ends of two sides of the auxiliary tricycle frame through a support, two ends of each pedal shaft extends out of the support and are connected with a differential mechanism, and the differential mechanism is provided with a left front wheel and a right front wheel. The middle portion of the main tricycle frame is provided with a vertical column which is driven by a turning handle to rotate, the vertical column is connected to with a rear fork at the rear end of the main tricycle frame through a turning driving device, by wrenching of the turning handle, the rear fork is driven to drive a rear wheel to do deflection movement, and thereby the function of rear wheel turning is achieved. The front-driving and rear-steering kid tricycle with the differential function is simple in structure, small in packaging size and high in operation entertainment.
Description
Technical field
The present invention relates to a kind of toy for children, specifically a kind of before driving rear steering toy tricycle with differential function.
Background technology
Present people more and more pay attention to child's growth, for the intelligence of opening up child and the manipulative ability of strengthening child, the heads of a family can purchase many toys for their child, and the perambulator favorite good-for-intelligence toy that is children, perambulator is due to strong operability, beautiful design, of great advantage for the capability of reaction of children intelligence development, reinforcement children's hand and eyes, thereby deeply be subjected to liking of the head of a family and children.
Existing child's tricycle is generally the front-wheel crank-driven, and trailing wheel uses as balance support, in this class child's tricycle front component a kind of be extremely to fly structure, be exactly when the pedal wheel period of the day from 11 p.m. to 1 a.m, the pedal rod driven wheel turns, when wheel turns, wheel drives treadle and rotates.This structure, when the adult carried out, children's pin is placed on also will follow treadle to rotate on treadle, foot injures if the implementation excessive velocities very easily causes children.Simultaneously, when children played this car, a both legs of advancing can not get having a rest, and easily produced fatigue, did not slide effect, were not suitable with the demand of entertainment for children.
Moreover, in existing toy tricycle, front-wheel is the single-wheel structure, it is bearing the function that drives and turn to, if when turning to rapidly (particularly downhill path) in moving ahead, the beat of front-wheel wide-angle easily causes heel and the vehicle frame of children turn side to bump, and the pin of opposite side is easily landing from the pedal again, damages.And when normally riding, children foot alternately firmly rides, under the impact that is activated power, front-wheel also can replace beat to from left to right, causes front-wheel to be snakelike and advances, and causes distance to increase, expend a large amount of muscle power, increased simultaneously mechanical wear, affect its service life.
Also have, in order to reduce transportation volume, and the protection product can not damage in transportation perambulator, is all generally to pack by the parts vanning when dispatching from the factory.The packaging volume that reduces perambulator just can reduce packing cost and transportation, warehouse cost.The longeron of the vehicle frame in toy tricycle and rear axle are the structure of the T font of captiveing joint, and shared size in length and breadth is all larger, is the critical component that affects the toy tricycle packing measurement.Therefore the packing measurement of traditional toy tricycle is larger, and the package interior space is many, has formed " air transportation " during transportation, and the serious waste resource has increased traffic cost, warehouse cost and packing cost.
Summary of the invention
The objective of the invention is provides a kind of simple in structure in order to overcome the shortcoming of prior art existence, and packaging volume is little, the large a kind of before driving rear steering toy tricycle with differential function of operation enjoyment.
The present invention seeks to realize with the following methods: a kind of before driving rear steering toy tricycle with differential function, it is characterized in that: it comprises main car frame and is located at the subframe of main car frame front end, top, subframe both sides is rotatably mounted with pedal shaft by bearing, the pedal shaft two ends are extended support and are connected with box of tricks outward, and the near front wheel and off front wheel are installed on described box of tricks; Described main car frame middle part is provided with the column that drives its rotation by steering handle, described column connects the back vent that is positioned at the main car frame rear end by steer-drive, pull steering handle and can drive the motion of back vent drive trailing wheel generation beat, thereby realize the rear-axle steering function.
Described pedal shaft is " S " type, and two vertexs in pedal shaft are equipped with stretcher, and the two ends of pedal shaft are provided with and drive the pin card that box of tricks rotates.
Described box of tricks comprises the pawl wheel and the ratchet that is arranged in the near front wheel or off front wheel that is fixed on the pedal shaft end, the near front wheel or off front wheel are rotatably mounted outside pawl wheel and are connected with subframe, rotate but pedal shaft drives pawl wheel one direction driving pawl forward direction.
Described pawl wheel is provided with the open slot of some mounting spring sheets, open slot is evenly distributed on pawl wheel, described spring leaf exposed parts cross section is " 7 " font, the spring leaf rear is fixed in the positioning area of open slot bottom, the spring leaf leading portion can swing in the free zone of open slot front end, when the pawl wheel rotating speed during greater than ratchet, the spring leaf top is buckled in the teeth of ratchet.
Described open slot cross section is " V " font, and the open slot bearing of trend departs from the center of circle and arranges.
Described pawl wheel is provided with the open slot of some expansion bolts and retracing spring, open slot is evenly distributed on pawl wheel, described expansion bolt is provided with reset attachment, action of reset spring makes expansion bolt give prominence to open slot in reset attachment, when the pawl wheel rotating speed during greater than ratchet, the expansion bolt top is buckled in the teeth of ratchet.
Described steer-drive comprises the active steering wheel and the driven steering wheel that is arranged on rear fork shaft that is arranged on the column below, is movably hinged with between two steering wheels to be the pull bar that " X " type distributes.
Described pull bar can be replaced by wire digging line.
Described subframe is provided with special pipe and interts in butt tube on main car frame, and shape tube is provided with elastic buckles and buckles in the knock hole that is arranged on butt tube fixing.
Described main car frame and subframe are coated with cover of upholstery, and cover of upholstery is at the elastic button that is provided with of corresponding position of positioning hole, and action button can break away from elastic buckles and knock hole, separates major and minor vehicle frame.
The invention has the beneficial effects as follows: 1) simple in structure, productive costs is low, improves the market competitiveness.2) traditional front two rear single-wheels design is overturned in employing, makes its Mechanical Builds novel, uniqueness.3) adopt the rear-axle steering design, make the bicyclist produce whipping drift sense in the turning process, promote its amusement pungency.4) the left and right front-wheel plays the driving effect, and between axletree and wheel, diff is installed, and is conducive to the ride comfort of Ackermann steer angle, and the simultaneously installation of diff can avoid stretcher to be turned by the wheel band, and wheel can slidable travel, indefatigability.
Description of drawings
Fig. 1 is assembly drowing of the present invention.
Fig. 2 is general assembly design sketch of the present invention.
Fig. 3 is front-wheel assembly drawing of the present invention.
Fig. 4 is direction operation schematic diagram of the present invention.
Fig. 5 is the B-B cutaway view in Fig. 4 of the present invention.
Fig. 6 is the B enlarged drawing in Fig. 5 of the present invention.
Fig. 7 is the constructional drawing of pawl wheel of the present invention.
Fig. 8 is ratchet of the present invention, second constructional drawing of pawl wheel.
Fig. 9 is the constructional drawing of second pawl wheel of the present invention.
Figure 10 is the assembly drawing of vehicle frame of the present invention.
Figure 11 is the assembly drowing of main car frame of the present invention and subframe.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is made concrete further instruction.A kind of before driving rear steering toy tricycle with differential function, it is characterized in that: it comprises main car frame 1 and is located at the subframe 2 of main car frame 1 front end, subframe 2 tops, both sides are rotatably mounted with pedal shaft 3 by bearing 23, this bearing 23 is cylindrical hole, also bearing can be set in cylindrical hole, pedal shaft 3 two ends are extended support and are connected with box of tricks outward, and the near front wheel 4 and off front wheel 41 are installed on described box of tricks; Described main car frame 1 middle part is provided with the column 12 that drives its rotation by steering handle 11, described column 12 connects the back vent 5 that is positioned at main car frame 1 rear end by steer-drive, pull steering handle 11 and can drive back vent 5 drive trailing wheels 51 generation beats motions, thereby realize the rear-axle steering function.
Described pedal shaft 3 is " S " type, and two vertexs in pedal shaft 3 are equipped with stretcher 31, and the two ends of pedal shaft 31 are provided with and drive the pin card 32 that box of tricks rotates.
Described box of tricks comprises the pawl wheel 6 and the ratchet 7 that is arranged in the near front wheel or off front wheel that is fixed on pedal shaft 3 ends, the near front wheel or off front wheel are rotatably mounted outside pawl wheel 6 and are connected with subframe 2, rotate but pedal shaft 3 drives pawl wheel 6 one direction driving pawl 7 forward directions.
Described pawl wheel 6 is provided with the open slot 62 of some mounting spring sheets 61, open slot 62 is evenly distributed on pawl wheel 6, described spring leaf 61 exposed parts cross sections are " 7 " font, the spring leaf rear is fixed in the positioning area of open slot bottom, the spring leaf leading portion can swing in the free zone of open slot front end, when pawl wheel 6 rotating speeds during greater than ratchet, the spring leaf top is buckled in the teeth of ratchet, be reinforcement spring sheet impact resistance, can bend backward a segment distance on the spring leaf top, strengthen its structure.
Described open slot 62 cross sections are " V " font, and the open slot bearing of trend departs from the center of circle and arranges.
Described pawl wheel 6 is provided with the open slot 62 of some expansion bolts 611 and retracing spring 612, open slot 62 is evenly distributed on pawl wheel 6, described expansion bolt 611 is provided with reset attachment 613, retracing spring 612 acts on reset attachment 613 and makes the outstanding open slot 62 of expansion bolt 611, when pawl wheel 6 rotating speeds during greater than ratchet, expansion bolt 611 tops are buckled in the teeth of ratchet.
Described steer-drive comprises the active steering wheel 13 that is arranged on column 12 belows and is arranged on to be movably hinged with between driven steering wheel 14, two steering wheels on rear fork shaft and is the pull bar 15 that " X " type distributes.Wherein pull bar is the hard reinforcement fabrication, and its two ends are provided with the bending end and intert in the hinge hole of steering wheel.For guaranteeing its performance, require two pull bars arranged in dislocation up and down.
Described pull bar 15 can be replaced by wire digging line.
Described subframe 2 is provided with special pipe 8 and interts in butt tube 81 on main car frame 1, and shape tube 8 is provided with elastic buckles 82, and to buckle into the knock hole 83 that is arranged on butt tube interior fixing.
Described main car frame 1 and subframe 2 are coated with cover of upholstery 9, and cover of upholstery is provided with elastic button 91 corresponding knock hole 83 positions, and action button can break away from elastic buckles 82 and knock hole 83, separate major and minor vehicle frame.
Principle of work: children are when riding, the left and right pin alternately firmly drives pedal shaft and rotates, captive joint with pawl wheel in the pedal shaft two ends, so pedal shaft will certainly drive its rotation when rotating, when the pawl wheel rotating speed during greater than ratchet, clamp button of the spring on pawl wheel rotates thereby drive front-wheel in the gear teeth of ratchet, thereby produces onward impulse.When sliding forward, ratchet speed is greater than pawl wheel when perambulator, and the interior teeth of ratchet this moment have directional tagging, promotes forward spring leaf its generation elasticity is stepped down.Make front-wheel slide outside pawl wheel, do not rotate and do not drive pedal, children are taken a quick nap.Avoid passing toy tricycle wheel and pedal and be fastened as a whole all the time, make children that foot can not get having a rest, easily produce sense of fatigue.Also avoid simultaneously perambulator to be wounded by pedal because of the too fast children of causing of speed of a motor vehicle foot when descending, guaranteed its safety.
When needs turn to, swing handle, it drives back vent by steering track rod or drag-line and rotates to the opposite sense that handle rotates, and when realizing rear-axle steering, produces whipping drift sense, increases the recreational of this perambulator.Due in perambulator turns to, the velocity contrast that has of left and right two front-wheels could be realized turning to, the vehicle wheel rotational speed that namely is positioned at the outer ring is high, the vehicle wheel rotational speed that is positioned at inner ring is low, this moment, diff played the effect that left and right two-wheeled power is separated, make two front-wheels be in the state of being free to slide, automatically regulate its velocity of rotation and realize turning to.As directly front-wheel being fixed on pedal shaft, the speed of front two-wheeled is consistent in all cases, will produce wheel and ground rubs by force when turning to, and causes turning to difficulty, even vehicle frame distortion.
In the present invention, in order to save the packing cost of this product, two front-wheels with the lateral dimension maximum in the present invention are arranged on subframe, subframe is detachable to be arranged on main car frame, dispatching from the factory when installing according to parts, greatly reduce in the shared space of vehicle frame, can reduce the packing measurement of this perambulator, to save packing, storage and traffic cost.Wherein for dismounting and the installation of convenient major and minor vehicle frame, in the present invention, subframe on be provided with special pipe and intert in butt tube on main car frame, shape tube is provided with elastic buckles and buckles in the knock hole that is arranged on butt tube fixing.Shape tube plays and prevents from rotating between vehicle frame, and elastic buckles can play the effect that breaks away from of preventing between the two, and both are fastened as a whole.When needs are dismantled, only need to press the elastic button that is pressed on elastic buckles, button forces elastic buckles to break off relations and both can be separated with knock hole, has installation, dismantles the advantages such as simple, quick.Wherein, be arranged on the outer cover of upholstery of vehicle frame and can effectively cover movable part, when preventing that children from being crushed by it, play decoration, beautify the effect of appearance, therefore producer can design the perambulator of more moulding, makes the product specification variation, the improving product market competitiveness.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.Structure as flywheel; the structure of hand-drive rear-axle steering; the connection mode of major-minor bicycle frame; the locate mode of major-minor bicycle frame etc.; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. before driving rear steering toy tricycle with differential function, it is characterized in that: it comprises main car frame (1) and is located at the subframe (2) of main car frame (1) front end, subframe (2) top, both sides is rotatably mounted with pedal shaft (3) by bearing (23), pedal shaft (3) two ends are extended support and are connected with box of tricks outward, and the near front wheel (4) and off front wheel (41) are installed on described box of tricks; Described main car frame (1) middle part is provided with the column (12) that drives its rotation by steering handle (11), described column (12) connects the back vent (5) that is positioned at main car frame (1) rear end by steer-drive, pull steering handle (11) and can drive the motion of back vent (5) drive trailing wheel (51) generation beat, thereby realize the rear-axle steering function.
2. a kind of before driving rear steering toy tricycle with differential function according to claim 1, it is characterized in that: described pedal shaft (3) is " S " type, two vertexs in pedal shaft (3) are equipped with stretcher (31), and the two ends of pedal shaft (3) are provided with and drive the pin card (32) that box of tricks rotates.
3. a kind of before driving rear steering toy tricycle with differential function according to claim 1, it is characterized in that: described box of tricks comprise the pawl wheel (6) that is fixed on pedal shaft (3) end and be arranged on the near front wheel or off front wheel in ratchet (7), the near front wheel or off front wheel are rotatably mounted outside pawl wheel (6) and are connected with subframe (2), and pedal shaft (3) drives pawl wheel (6) but one direction driving pawl (7) forward direction is rotated.
4. a kind of before driving rear steering toy tricycle with differential function according to claim 3, it is characterized in that: described pawl wheel (6) is provided with the open slot (62) of some mounting spring sheets (61), open slot (62) is evenly distributed on pawl wheel (6), described spring leaf (61) exposed parts cross section is " 7 " font, the spring leaf rear is fixed in the positioning area of open slot bottom, the spring leaf leading portion can swing in the free zone of open slot front end, when pawl wheel (6) rotating speed during greater than ratchet, the spring leaf top is buckled in the teeth of ratchet.
5. a kind of before driving rear steering toy tricycle with differential function according to claim 4 is characterized in that: described open slot (62) cross section is " V " font, and the open slot bearing of trend departs from the center of circle and arranges.
6. a kind of before driving rear steering toy tricycle with differential function according to claim 3, it is characterized in that: described pawl wheel (6) is provided with the open slot (62) of some expansion bolts (611) and retracing spring (612), open slot (62) is evenly distributed on pawl wheel (6), described expansion bolt (611) is provided with reset attachment (613), retracing spring (612) acts on reset attachment (613) makes expansion bolt (611) give prominence to open slot (62), when pawl wheel (6) rotating speed during greater than ratchet, expansion bolt (611) top is buckled in the teeth of ratchet.
7. a kind of before driving rear steering toy tricycle with differential function according to claim 1, it is characterized in that: described steer-drive comprises the active steering wheel (13) that is arranged on column (12) below and is arranged on driven steering wheel (14) on rear fork shaft, is movably hinged with the pull bar (15) that is the distribution of " X " type between two steering wheels.
8. a kind of before driving rear steering toy tricycle with differential function according to claim 7, it is characterized in that: described pull bar (15) can be replaced by wire digging line.
9. a kind of before driving rear steering toy tricycle with differential function according to claim 1, it is characterized in that: described subframe (2) is provided with special pipe (8) and interts in butt tube (81) on main car frame (1), and shape tube (8) is provided with elastic buckles (82) and buckles in the knock hole (83) that is arranged on butt tube fixing.
10. according to claim 1 or 9 described a kind of before driving rear steering toy tricycles with differential function, it is characterized in that: described main car frame (1) and subframe (2) are coated with cover of upholstery (9), cover of upholstery is provided with elastic button (91) corresponding knock hole (83) position, action button can break away from elastic buckles (82) and knock hole (83), separates major and minor vehicle frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101041038A CN103129667A (en) | 2013-03-28 | 2013-03-28 | Front-driving rear-steering kid tricycle with differential function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101041038A CN103129667A (en) | 2013-03-28 | 2013-03-28 | Front-driving rear-steering kid tricycle with differential function |
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| CN103129667A true CN103129667A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101041038A Pending CN103129667A (en) | 2013-03-28 | 2013-03-28 | Front-driving rear-steering kid tricycle with differential function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977698A (en) * | 2020-12-30 | 2021-06-18 | 徐超 | Electric tricycle for children |
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| CN2565726Y (en) * | 2002-06-28 | 2003-08-13 | 陈定兴 | Tricycle |
| CN2658047Y (en) * | 2003-07-28 | 2004-11-24 | 陈俊丞 | Improved wheel driving structure |
| US20040245757A1 (en) * | 2003-01-31 | 2004-12-09 | De Oliveira Joaquim Matias | Front wheel drive for toy vehicles |
| US20070290470A1 (en) * | 2006-05-26 | 2007-12-20 | Luther Taylor | Tricycle and steering mechanism therefor |
| CN202144285U (en) * | 2011-07-22 | 2012-02-15 | 怡人工艺品（宁波）有限公司 | Four-wheel bassinet |
| CN202180885U (en) * | 2011-08-03 | 2012-04-04 | 钱国超 | Pedal car for children |
| CN102951232A (en) * | 2012-06-04 | 2013-03-06 | 泰特乐有限公司 | Tricycle with double riding modes |
| CN203142898U (en) * | 2013-03-28 | 2013-08-21 | 叶礼发 | Front-driving rear-steering three-wheel baby carrier with differential function |
-
2013
- 2013-03-28 CN CN2013101041038A patent/CN103129667A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2565726Y (en) * | 2002-06-28 | 2003-08-13 | 陈定兴 | Tricycle |
| US20040245757A1 (en) * | 2003-01-31 | 2004-12-09 | De Oliveira Joaquim Matias | Front wheel drive for toy vehicles |
| CN2658047Y (en) * | 2003-07-28 | 2004-11-24 | 陈俊丞 | Improved wheel driving structure |
| US20070290470A1 (en) * | 2006-05-26 | 2007-12-20 | Luther Taylor | Tricycle and steering mechanism therefor |
| CN202144285U (en) * | 2011-07-22 | 2012-02-15 | 怡人工艺品（宁波）有限公司 | Four-wheel bassinet |
| CN202180885U (en) * | 2011-08-03 | 2012-04-04 | 钱国超 | Pedal car for children |
| CN102951232A (en) * | 2012-06-04 | 2013-03-06 | 泰特乐有限公司 | Tricycle with double riding modes |
| CN203142898U (en) * | 2013-03-28 | 2013-08-21 | 叶礼发 | Front-driving rear-steering three-wheel baby carrier with differential function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977698A (en) * | 2020-12-30 | 2021-06-18 | 徐超 | Electric tricycle for children |
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Application publication date: 20130605 |