CN108791666A - The child's tricycle front-wheel quickly adjusted - Google Patents

Abstract

The invention discloses a kind of child's tricycle front-wheels quickly adjusted, including：One rear cover；One protecgulum；One transmission ring；One drive substrate, the drive substrate are arranged in the transmission ring, and the drive substrate is equipped with a cylindric abutment sleeve, and the side wall of the abutment sleeve is equipped with one first locating groove, one second locating groove and a third locating groove；One adjusting part；One adjusts fluted disc；A pair of pedals component；Wherein, the adjusting part includes an adjustment gear, certain bit length bar, a retaining spring, a positioning draw ring and an overturning snail head, and the overturning snail head is matched with any one in first locating groove, the second locating groove and third locating groove.It can be suitble to the child of different age group with the ride mode of unrestricted choice tricycle due to the use of person, it is safe.

Description

The child's tricycle front-wheel quickly adjusted

Technical field

The present invention relates to a kind of child's tricycle, more precisely, being a kind of child's tricycle front-wheel quickly adjusted.

Background technology

Existing child's tricycle mostly just only has a kind of ride mode, and safety row is not good enough.In addition, also there is a kind of band The tricycle of push rod, when parent carries out, pedal rotates therewith, and is easy to reach the foot of child, damage.

Invention content

The present invention is mainly the technical problem solved present in the prior art, to provide a kind of children three quickly adjusted Take turns Chinese herbaceous peony wheel.

The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：

The invention discloses a kind of child's tricycle front-wheels quickly adjusted, including：

One circular rear cover；

One circular protecgulum, the protecgulum are removably connected with the rear cover；

One transmission ring, the transmission ring are removably disposed in the rear cover；

One drive substrate, the drive substrate are arranged in the transmission ring, and the drive substrate includes a drive Dynamic main shaft, the drive substrate are equipped with several guiding notches being radially arranged, one are respectively equipped in the guiding notch Slidable driving arm, the drive substrate are equipped with a cylindric abutment sleeve, the side wall of the abutment sleeve It is equipped with one first locating groove, one second locating groove and a third locating groove；

One adjusting part, the adjusting part are rotatably arranged in the drive substrate；

One adjusts fluted disc, and the adjusting fluted disc is between the drive substrate and the protecgulum, the tune The perforative guiding arc slot that fluted disc is equipped with several arcs is saved, the guiding arc slot is matched with the driving arm；

A pair of pedals component, the pedal assembly are located at the both ends of the driving spindle；

Wherein, the adjusting part include an adjustment gear, certain bit length bar, a retaining spring, one positioning draw ring and One overturning snail head, the described overturning snail in first locating groove, the second locating groove and third locating groove Any one is matched；

Wherein, the adjustment gear is between a neutral, a deceleration position and a full speed position,

When the adjustment gear is in neutral, the driving arm is retracted in the guiding notch,

When the adjustment gear is in deceleration position, the driving arm slides in and out along guiding notch, institute The driving arm stated locks the transmission ring, and the transmission ring drives the rear cover to carry out rotation and rear cover in the same direction Rotating speed be less than the transmission ring rotating speed,

When the adjustment gear is in full speed position, the driving arm along guiding notch continue to Outer sliding, the driving arm lock the transmission ring and rear cover.

Preferably, the positioning draw ring has magnetism.

Preferably, the protecgulum is equipped with a circular watch window, and the inner wall of the watch window is equipped with window Mouth screw thread, the watch window are equipped with a dismountable cover board, and the cover board includes a circular cover plate main body, described The side wall of cover plate main body be equipped with a cover board connection screw thread, the cover board connection screw thread matches with the window screw thread It closes, the upper surface of the cover plate main body is equipped with a rotation knob and a paster paste area.

The invention discloses a kind of child's tricycle front-wheels quickly adjusted, including：

One circular rear cover, the rear cover include the ring gear of an annular, are set in the inner wall circumferential direction of the ring gear Have several internal tooth heads, the center of the rear cover is equipped with a rear cover axis hole, the inner circumferential of the ring gear be equipped with one by The first fixed gear shaft array, second fixed gear shaft being made of the second fixed gear shaft for first fixed gear shaft composition Array and the swing arm array axis that is made of arm shaft are respectively equipped with one first driving cog on first fixed gear shaft Wheel, is respectively equipped with one second transmission gear on second fixed gear shaft, second transmission gear and described the One transmission gear is meshed, and a dismountable swing arm unit is respectively equipped on the arm shaft, and the swing arm unit includes One swing arm main body, a swing arm nut, a swing arm cam and a swing arm torsional spring, the swing arm main body include a cylindric swing arm The side wall of cylinder, the swing arm cylinder is equipped with a cylinder convex block, and the outer wall of the cylinder convex block is equipped with a pair of parallel The cylinder flange of setting is respectively equipped with a flange hole on the cylinder flange, and the both sides of the swing arm cam are set respectively There are a convex block spindle nose, the convex block spindle nose to run through the flange hole, the bottom of the cylinder convex block is equipped with a torsional spring Fixture block, the torsional spring fixture block are equipped with a fixture block circular hole, and the fixture block circular hole is run through in one end of the swing arm torsional spring；

One circular protecgulum, the protecgulum are removably connected with the rear cover, and the center of the protecgulum is set There are a protecgulum axis hole, the side of the protecgulum axis hole to be equipped with a watch window, the circumferential direction of the watch window is equipped with one First cue mark, one second cue mark and a third cue mark；

One transmission ring, the transmission ring are removably disposed in the rear cover, and the transmission ring includes a ring The outer wall circumferential direction of the external toothing of shape, the external toothing is equipped with several external tooth heads, is set in the inner wall circumferential direction of the external toothing There are several guiding strips being radially arranged, the bottom of the external toothing to be equipped with the limited location snap ring of a pair of of annular, the limit A limited ring groove is constituted between snap ring, the limited ring groove is matched with the swing arm cam of the swing arm unit, described External tooth head is meshed with first transmission gear, and the internal tooth head is meshed with second transmission gear；

One drive substrate, the drive substrate are arranged in the transmission ring, and the drive substrate includes a drive The side wall of dynamic main shaft, the driving spindle is equipped with a fan-shaped regulation fan plate and four guiding horizontal stripes to extend outward, institute The regulation fan plate stated is equipped with a fan board shaft bar, and the top of the fan board shaft bar is equipped with a fan plate thread head, the fan plate The bottom circumferential direction of shaft is equipped with a cylindric abutment sleeve, and the side wall of the abutment sleeve is equipped with one first positioning and blocks It is equipped with a guiding notch on slot, one second locating groove and a third locating groove, the regulation fan plate and guiding horizontal stripe, A slidable driving arm is respectively equipped in the guiding notch, the driving arm includes that the driving of a strip is horizontal The both sides of item, the driving horizontal stripe are respectively equipped with a pair of of driving guide rail, the driving guide rail and the guiding notch phase The tail portion of cooperation, the driving horizontal stripe is equipped with a rod-shaped adjusting rod, and the top of the adjusting rod is equipped with a limited cap, institute The first locking that the head for the driving horizontal stripe stated is equipped with a pair of of wedge shape protrudes, and first locking is equipped with a strip between protruding The front of the guiding clip slot of shape, the driving horizontal stripe is equipped with the engagement item of " L " font, and the head of the engagement item is equipped with Second locking of a pair of of wedge shape protrudes；

One adjusting part, the adjusting part are rotatably arranged on the fan board shaft bar；

One locking nut, the locking nut are matched with the fan plate thread head；

One adjusts fluted disc, and the adjusting fluted disc is between the drive substrate and the protecgulum, the tune The center for saving fluted disc is equipped with a fluted disc circular hole, and the driving spindle runs through the fluted disc circular hole, the adjusting fluted disc Edge is equipped with several fluted disc heads, and the perforative guiding arc slot there are five arc, the guiding arc are set on the adjusting fluted disc Slot is arranged in the circumferential direction of the fluted disc circular hole, and the guiding arc slot is matched with the adjusting rod；

A pair of pedals component, the pedal assembly are located at the both ends of the driving spindle, the pedal group Part includes a pedal crankshaft and a pedal；

Wherein, the adjusting part include an adjustment gear, certain bit length bar, a retaining spring, one positioning draw ring and One overturning snail head, the fan board shaft bar run through the adjustment gear, and the center of the adjustment gear is logical equipped with a gear The bottom in hole, the adjustment gear is equipped with a cylindric gear sleeve, and the side wall of the gear sleeve is equipped with a lock Only window is respectively equipped with a turnover panel rotation hole, the bottom inside of the locking window on the two side of the locking window It is equipped with a limit blend stop, the top of the locking window is equipped with a limit card slot, and the outside of the adjustment gear is equipped with The top of one perforative positioning through hole, the positioning through hole is equipped with a limit pressure ring, and the middle part of the positioning stock is equipped with The spacing ring of one annular is prominent, and the spacing ring is prominent to be matched with the retaining spring, is set at the top of the positioning stock There are a draw ring connecting hole, the positioning draw ring to run through the draw ring connecting hole, the bottom of the positioning stock is equipped with one Worm screw main body, snail head horizontal stripe of the described overturning snail head comprising an overturning snail disk and a strip, in the overturning snail disk The heart is equipped with a snail disk circular hole, and snail head pin runs through the snail disk circular hole and turnover panel rotation hole, the overturning snail disk and institute The worm screw main body stated matches；

Wherein, the adjustment gear is between a neutral, a deceleration position and a full speed position,

When the adjustment gear is in neutral, the driving arm is retracted in the guiding notch,

When the adjustment gear is in deceleration position, the driving arm slides in and out along guiding notch, institute First locking of the driving arm stated, which protrudes, is caught in the guiding strip,

When the adjustment gear is in full speed position, the driving arm along guiding notch continue to Outer sliding, second locking, which protrudes, is caught in the internal tooth head.

Preferably, the positioning draw ring has magnetism.

Preferably, the inner wall of the watch window is equipped with window screw thread, and it is removable that the watch window is equipped with one The cover board unloaded, the cover board include a circular cover plate main body, and the side wall of the cover plate main body is connected equipped with a cover board Screw thread, the cover board connection screw thread are matched with the window screw thread, and the upper surface of the cover plate main body is equipped with one Rotate knob and a paster paste area.

The invention discloses a kind of child's tricycle for the child's tricycle front-wheel for being equipped with and quickly adjusting as the aforementioned, packets Containing a vehicle frame and a pair of rear wheels.

The invention discloses a kind of methods that the child's tricycle front-wheel quickly adjusted as the aforementioned is adjusted, including Step：

1), by detachable cover plate, so that positioning stock rotates using positioning draw ring, the inwardly overturning of overturning snail head overturns snail head Snail head horizontal stripe deviate from from the first locating groove or the second locating groove or third locating groove；

2) adjustment gear, is rotated, until adjustment gear reaches the position needed；

3) positioning stock, is rotated backward, overturning snail head flips outward, and it is corresponding fixed that the snail head horizontal stripe of overturning snail head snaps onto In the card slot of position；

4), cover board is reinstalled.

The child's tricycle front-wheel of the present invention has the following advantages：It can riding with unrestricted choice tricycle due to the use of person Pattern is suitble to the child of different age group, safe.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the dimensional structure diagram of the child's tricycle front-wheel of the present invention；

Fig. 2 is the stereochemical structure decomposing schematic representation of the child's tricycle front-wheel in Fig. 1；

Fig. 3 is the dimensional structure diagram of the rear cover of the child's tricycle front-wheel in Fig. 2；

Fig. 4 is the detail enlarged diagram of the a-quadrant of the child's tricycle front-wheel in Fig. 2；

Fig. 5 is the further stereochemical structure decomposing schematic representation of the child's tricycle front-wheel in Fig. 2；

Fig. 6 is the detail enlarged diagram of the B area in Fig. 5；

Fig. 7 is the dimensional structure diagram of the transmission ring of the child's tricycle front-wheel in Fig. 5；

Fig. 8 is sectional view of the transmission ring in Fig. 7 along line C-C；

Fig. 9 is the detail enlarged diagram in the regions D in Fig. 8；

Figure 10 is the further stereochemical structure decomposing schematic representation of the child's tricycle front-wheel in Fig. 5；

Figure 11 is the detail enlarged diagram in the regions E in Figure 10；

Figure 12 is the stereochemical structure decomposing schematic representation of the swing arm unit in Figure 10；

Figure 13 is the further stereochemical structure decomposing schematic representation of the child's tricycle front-wheel in Fig. 5；

Figure 14 is the detail enlarged diagram in the regions F in Figure 13；

Figure 15 is the detail enlarged diagram in the regions G in Figure 13；

Figure 16 is the dimensional structure diagram of the adjustment gear of the child's tricycle front-wheel in Figure 13；

Figure 17 is the dimensional structure diagram of the driving arm of the child's tricycle front-wheel in Figure 13；

Figure 18 uses schematic diagram for child's tricycle front-wheel of the invention, at this point, adjustment gear is in neutral；

Figure 19 uses schematic diagram for the child's tricycle front-wheel in Figure 18, is at this time another visual angle；

Figure 20 is the detail enlarged diagram in the regions H in Figure 19；

Figure 21 uses schematic diagram for child's tricycle front-wheel of the invention, at this point, adjustment gear is in deceleration position；

Figure 22 uses schematic diagram for the child's tricycle front-wheel in Figure 21, is at this time another visual angle；

Figure 23 is the detail enlarged diagram in the regions I in Figure 22；

Figure 24 uses schematic diagram for child's tricycle front-wheel of the invention, at this point, adjustment gear is in full speed position；

Figure 25 uses schematic diagram for the child's tricycle front-wheel in Figure 24, is at this time another visual angle；

Figure 26 is the detail enlarged diagram in the regions J in Figure 25；

Figure 27 is the dimensional structure diagram of the tool of the adjusting of the child's tricycle front-wheel of the present invention；

Figure 28 is the dimensional structure diagram of second of embodiment of the child's tricycle front-wheel of the present invention；

Figure 29 is the stereochemical structure decomposing schematic representation of the child's tricycle front-wheel in Figure 28；

Figure 30 is the detail enlarged diagram in the regions K in Figure 29；

Figure 31 is the detail enlarged diagram in the regions L in Figure 29；

Figure 32 is the dimensional structure diagram of the adjusting part of the child's tricycle front-wheel in Figure 29；

Figure 33 is the stereochemical structure decomposing schematic representation of the adjusting part in Figure 32；

Figure 34 is the detail enlarged diagram in the regions M in Figure 33；

Figure 35 is the dimensional structure diagram of the adjustment gear of the adjusting part in Figure 33；

Figure 36 is sectional view of the adjustment gear in Figure 35 along N-N lines；

Figure 37 is the detail enlarged diagram in the regions P in Figure 36；

Figure 38 is the dimensional structure diagram of the third embodiment of the child's tricycle front-wheel of the present invention, at this time only Show part-structure；

Figure 39 is the stereochemical structure decomposing schematic representation of the child's tricycle front-wheel in Figure 38；

Figure 40 is the detail enlarged diagram in the regions Q in Figure 39；

Figure 41 is the dimensional structure diagram of the adjusting part of the child's tricycle front-wheel in Figure 39；

Figure 42 is the stereochemical structure decomposing schematic representation of the adjusting part in Figure 41；

Figure 43 is the detail enlarged diagram in the Zone R domain in Figure 42；

Figure 44 is the further stereochemical structure decomposing schematic representation of the adjusting part in Figure 42；

Figure 45 is the dimensional structure diagram of the locking turnover panel of the adjusting part in Figure 42；

Figure 46 is the dimensional structure diagram of the adjustment gear of the adjusting part in Figure 42；

Figure 47 is cross-sectional view of the adjustment gear in Figure 46 along S-S lines；

Figure 48 is the detail enlarged diagram in the regions T in Figure 47；

Figure 49 is the detail enlarged diagram in the regions U in Figure 47；

Figure 50 uses schematic diagram for the child's tricycle front-wheel in Figure 38, at this point, locking turnover panel is in the lock state；

Figure 51 is the detail enlarged diagram in the regions V1 in Figure 50；

Figure 52 uses schematic diagram for the child's tricycle front-wheel in Figure 38, at this point, locking turnover panel is in the unlocked state；

Figure 53 is the detail enlarged diagram in the regions V2 in Figure 52；

Figure 54 is the dimensional structure diagram of the 4th kind of embodiment of the child's tricycle front-wheel of the present invention, at this time only Show adjusting part；

Figure 55 is the stereochemical structure decomposing schematic representation of the adjusting part in Figure 54；

Figure 56 is the detail enlarged diagram of the W area in Figure 55；

Figure 57 is the further stereochemical structure decomposing schematic representation of the adjusting part in Figure 55；

Figure 58 uses schematic diagram for the adjusting part in Figure 54, at this point, overturning snail head is in varus position；

Figure 59 is the detail enlarged diagram in the regions R1 in Figure 58；

Figure 60 uses schematic diagram for the adjusting part in Figure 54, at this point, overturning snail head is in and turns up on position；

Figure 61 is the detail enlarged diagram in the regions R2 in Figure 60

Specific implementation mode

The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.

As shown in Fig. 1 to Figure 17, which includes a circular rear cover 2 and a circular protecgulum 3.It should Protecgulum 3 is removably connected with the rear cover 2, can be connected by screw or be connected through a screw thread.The protecgulum 3 and rear cover 2 A wheel body is constituted, the rubber ring or air tyre of damping can be coated in the periphery of wheel body.

The rear cover 2 includes the ring gear 21 of an annular, and the inner wall circumferential direction of the ring gear 21 is equipped with several internal tooth heads 211, The center of the rear cover 2 is equipped with a rear cover axis hole 22, and the inner circumferential of the ring gear 21 is equipped with one by the first fixed gear shaft 23 First fixed gear shaft array of composition, a second fixed gear shaft array and one being made of the second fixed gear shaft 24 is by putting The swing arm array axis that arm axle 25 forms is respectively equipped with one first transmission gear 5 on first fixed gear shaft 23, this second is fixed One second transmission gear 6 is respectively equipped on gear shaft 24, which is meshed with first transmission gear 5, the pendulum A dismountable swing arm unit 7 is respectively equipped on arm axle 25, the swing arm unit 7 include a swing arm main body 71, a swing arm nut 72, One swing arm cam 73 and a swing arm torsional spring 74, the swing arm main body 71 include a cylindric swing arm cylinder 711, the swing arm cylinder 711 side wall is equipped with a cylinder convex block 712, and the outer wall of the cylinder convex block 712 is equipped with the cylinder flange of a pair of parallel setting 713, a flange hole 714 is respectively equipped on the cylinder flange 713, and the both sides of the swing arm cam 73 are respectively equipped with a convex block spindle nose 731, which runs through the flange hole 714, and the bottom of the cylinder convex block 712 is equipped with a torsional spring fixture block 715, the torsion Spring fixture block 715 is equipped with a fixture block circular hole 716, and the fixture block circular hole 716 is run through in one end of the swing arm torsional spring 74, swing arm torsional spring 74 Effect is compressing swing arm main body 71 so that swing arm main body 71 has the trend inwardly rotated.

The center of the protecgulum 3 is equipped with a protecgulum axis hole 31, and the side of the protecgulum axis hole 31 is equipped with a watch window 32, the sight The circumferential direction for examining window 32 is equipped with one first cue mark 33, one second cue mark 34 and a third cue mark 35.Wherein, First cue mark 33, the second cue mark 34 and third cue mark 35 are respectively corresponding alphabetical " A ", " B " and " C ".Hereinafter The effect of these cue marks can be further described.

One transmission ring 4 is removably disposed in rear cover 2, which includes the external toothing 41 of an annular, the external tooth The outer wall circumferential direction of circle 41 is equipped with several external tooth heads 411, the inner wall circumferential direction of the external toothing 41 be equipped with it is several be radially arranged draw Strip 412 is led, the bottom of the external toothing 41 is equipped with the limited location snap ring 42 of a pair of of annular, and a limit is constituted between the limited location snap ring 42 Annular groove 421, the limited ring groove 421 are matched with the swing arm cam 73 of the swing arm unit 7, the external tooth head 411 and first transmission Gear 5 is meshed, which is meshed with second transmission gear 6.

One drive substrate 8 is arranged in the transmission ring 4, which includes a driving spindle 81, the driving spindle 81 Side wall be equipped with a fan-shaped regulation fan plate 82 and four guiding horizontal stripes 83 to extend outward, which is equipped with one Board shaft bar 822 is fanned, the top of the fan board shaft bar 822 is equipped with a fan plate thread head 8221, the regulation fan plate 82 and guiding horizontal stripe 83 On be equipped with a guiding notch 84, a slidable driving arm 12 is respectively equipped in the guiding notch 84, the driving arm 12 Include the driving horizontal stripe 121 of a strip, the both sides of the driving horizontal stripe 121 are respectively equipped with a pair of of driving guide rail 1211, the driving Guide rail 1211 is matched with the guiding notch 84, and the tail portion of the driving horizontal stripe 121 is equipped with a rod-shaped adjusting rod 122, the adjusting The top of bar 122 is equipped with a limited cap 123, and the head of the driving horizontal stripe 121 is equipped with the first locking protrusion 124 of a pair of of wedge shape, First locking protrudes the guiding clip slot 125 that a strip is equipped between 124, and the front of the driving horizontal stripe 121 is equipped with " L " word The head of the engagement item 126 of shape, the engagement item 126 is equipped with the second locking protrusion 127 of a pair of of wedge shape.

One adjustment gear 10 is arranged in drive substrate 8, which runs through the adjustment gear 10, the adjusting tooth The center of wheel 10 is equipped with a gear hole 101, and the top end surface of the adjustment gear 10 is equipped with a pair of plectrum 102 and one that adjusts and refers to Show arrow 105, a plectrum bayonet 103 is respectively equipped on the adjusting plectrum 102.The fan plate thread head 8221 is equipped with a locking screw Mother 11, the locking nut 11 compress the adjustment gear 10.

One adjusts fluted disc 9 between drive substrate 8 and protecgulum 3, and the center of the adjusting fluted disc 9 is equipped with a fluted disc circular hole 91, which runs through the fluted disc circular hole 91, and the edge of the adjusting fluted disc 9 is equipped with several fluted disc heads 92, the fluted disc head 92 It is matched with the adjustment gear 10, the perforative guiding arc slot 93 there are five arc, the guiding arc slot 93 is set on the adjusting fluted disc 9 It is arranged in the circumferential direction of the fluted disc circular hole 91, which matches with the adjusting rod 122.

A pair of pedals component 4T is located at the both ends of the driving spindle 81, and pedal assembly 4T includes a pedal crankshaft A 4T1 and pedal 4T2.Pedal crankshaft 4T1 is equipped with keyway, and the both ends of driving spindle 81 also are provided with corresponding keyway, convenient It is attached using spline.

Wherein, which is between a neutral, a deceleration position and a full speed position,

When the adjustment gear 10 is in neutral, which is retracted in the guiding notch 84；When the tune When section gear 10 is in deceleration position, which slides in and out along guiding notch 84, and the first of the driving arm 12 Locking protrudes 124 and is caught in the guiding strip 412；When the adjustment gear 10 is in full speed position, the driving arm 12 along Guiding notch 84 continues to slide out, which protrudes 127 and be caught in the internal tooth head 211.Hereinafter will further it be said It is bright.

The occupation mode of the child's tricycle front-wheel is illustrated below.

As shown in Figure 18 to Figure 20, user rotates adjustment gear 10 so that the arrow 105 in adjustment gear 10 refers to To the first cue mark 33, the adjusting rod 122 of driving arm 12 is located at the inner terminal for being oriented to arc slot 93, and driving arm 12 is retracted in It guides in notch 84, is not caught in guiding strip 412 at this point, the first locking protrudes 124, the second locking protrudes 127 also not It is caught in internal tooth head 211.At this point, child's foot pedal 42 is forward, it is detached from guiding strip 412 since the first locking protrudes 124, the Two lockings protrude 127 and are detached from internal tooth head 211, so, drive substrate 8, adjustment gear 10 and adjusting 9 synchronous idle of fluted disc, this When, child's tricycle can not move ahead, and parent can also freely carry out tricycle, and pedal 42 will not get to the foot of child.

As shown in Figure 21 to Figure 23, user continues to rotate adjustment gear 10 so that the arrow in adjustment gear 10 105 are directed toward the second cue mark 34, and the adjusting rod 122 of driving arm 12 slides into the middle part for being oriented to arc slot 93, driving arm 12 It slides in and out along guiding notch 84, is caught in guiding strip 412 until the first locking protrudes 124, and the second locking protrudes 127 It is not caught in internal tooth head 211 yet.At this point, child's foot pedal 42 is forward, guiding strip 412 is caught in since the first locking protrudes 124 It is interior, and the second locking protrudes 127 and is still detached from internal tooth head 211, so, drive substrate 8, adjustment gear 10 adjust fluted disc 9 and pass Rotating ring 4 rotates synchronously, and the rotation of transmission ring 4 will drive the first transmission gear 5 and the second transmission gear 6, and then power is transmitted to The ring gear 21 of rear cover 2, then, entire rear cover 2 rotates forward together with protecgulum 3.When the anti-pedal of child 42 backward when, it is whole A rear cover 2 can also rotate backward together with protecgulum 3.External toothing 41,5 and of the first transmission gear by adjusting transmission ring 4 The transmission parameter, such as diameter, the number of teeth etc. of second transmission gear 6, to obtain ideal reduction ratio, general 0.5-0.6 compares Properly.

As shown in Figure 24 to Figure 26, user continues to rotate adjustment gear 10 so that the arrow in adjustment gear 10 105 are directed toward third cue mark 35, and the adjusting rod 122 of driving arm 12 slides into the outermost end for being oriented to arc slot 93, driving arm 12 continue to slide out along guiding notch 84, are caught in internal tooth head 211 until the second locking protrudes 127, at this point, the first locking Prominent 124 are still stuck in guiding strip 412.At this point, child's foot pedal 42 is forward, due to the second locking protrude 127 be caught in Tooth head 211 is interior and the first locking protrudes 124 and is still stuck in guiding strip 412, so, drive substrate 8, is adjusted adjustment gear 10 Fluted disc 9, transmission ring 4 and rear cover 2 rotate synchronously, at this time the ride mode and Full-Speed mode of as common child's tricycle.

No matter which kind of ride mode in user's three of the above, finally locking nut 11 must all be screwed so that adjust It saves gear 10 and is locked with the relative position for adjusting fluted disc 9.

It is described below and how to adjust rotation adjustment gear 10, as shown in Fig. 1 and Figure 16, user can from watch window 32 To learn the direction of the arrow 105 in adjustment gear 10.Then, the plectrum bayonet in adjustment gear 10 is withstood using screwdriver 103, and rotate screwdriver and arrow 105 is made to be directed toward the corresponding cue mark of pattern needed.Finally, it is locked using box spanner Tight locking nut 11 so that locking nut 11 compresses adjustment gear 10, and adjustment gear 10 is locked with the relative position for adjusting fluted disc 9 Extremely.When needing to adjust other ride modes, locking nut 11 is unscrewed again, is repeated the above process.

It is described below and how to use the swing arm unit 7.When installing transmission ring 4, first swing arm unit 7 is pushed aside outward, so Transmission ring 4 is put into rear cover 2 afterwards, and the external toothing 41 of transmission ring 4 is meshed with each first transmission gear 5.Most Afterwards, swing arm unit 7 is discharged, under the action of swing arm torsional spring 74 so that swing arm main body 71 has inwardly rotation, swing arm cam 73 tight Press limited ring groove 421.In the rotation process of transmission ring 4, swing arm cam 73 presses limited ring groove 421 always, and stability of rotation can It leans on.

As shown in figure 27, user can also be using the tool 13 in figure come to the plectrum bayonet 103 in adjustment gear 10 It is operated, which includes the operation horizontal stripe 131 of a strip, and a pair of of strip is equipped on the head of operation horizontal stripe 131 Engaging column cap 132, engage and equipped with one screw arc slot 133 between column cap 132, facilitate the operation of box spanner.In operation horizontal stripe 131 tail portion is equipped with a rocking handle 134.In use, a pair of engaging column cap 132 is directly snapped onto the plectrum card in adjustment gear 10 In mouthfuls 103, then rotation crank 134 so that tool 13 rotates, until arrow 105 is directed toward the cue mark needed. Finally, the sleeve of box spanner is inserted between arc slot 133 from screwing, locking nut 11 is screwed.

As shown in Figure 28 to Figure 37, for second of embodiment of the child's tricycle front-wheel of the present invention.With the first reality It applies unlike mode, adjustment gear 10 is conditioned component 10S substitutions.

One first positioning jack 85A is equipped in the circumferential direction of the fan board shaft bar 822A of drive substrate 8A, one second positioning is inserted A hole 86A and third positioning jack 87A, and the first positioning jack 85A, the second positioning jack 86A and third positioning jack 87A Position is corresponding with the first cue mark 33, the second cue mark 34 and the position of third cue mark 35 respectively.

As shown in figure 33, adjusting part 10S is rotatably arranged on fan board shaft bar 822A, including an adjustment gear 10A, a positioning tie bar 14A, a retaining spring 16A and one positioning draw ring 15A, fan board shaft bar 822A run through adjustment gear 10A, A perforative positioning through hole 104A is equipped on the outside of adjustment gear 10A, the top of positioning through hole 104A is equipped with a limit pressure ring The middle part of 1041A, positioning tie bar 14A are equipped with the prominent 141A of spacing ring of an annular, the prominent 141A and retaining spring 16A of the spacing ring It matches.The top of positioning tie bar 14A is equipped with a draw ring connecting hole 142A, and positioning draw ring 15A runs through the draw ring connecting hole 142A。

Positioning draw ring 15A has magnetism, can be adsorbed on adjustment gear 10A in this way.In addition, in the observation of protecgulum 3A The inner wall of window 32A is equipped with window screw thread 321A, and watch window 32A is equipped with a dismountable cover board 322A, the cover board 322A includes a circular cover plate main body 3221A, and the side wall of cover plate main body 3221A is equipped with a cover board connection screw thread 3222A, The cover board connection screw thread 3222A is matched with window screw thread 321A, and the upper surface of cover plate main body 3221A is equipped with a rotation A knob 3223A and paster paste area 3224A.Paster paste area 3224A can be used for pasting name patch, and child is facilitated to carry out It distinguishes and identifies.

It is described below and how to use adjusting part 10S.When needing to adjust the occupation mode of child's tricycle front-wheel, first Cover board 322A is dismantled, positioning draw ring 15A is then transferred to, and pulls out positioning draw ring 15A.At this point, retaining spring 16A is pressed Contracting, meanwhile, the head of positioning tie bar 14A is deviate from from corresponding positioning jack at this time.Then, positioning draw ring 15A is pulled so that Adjustment gear 10A rotations reach the position needed until adjustment gear 10A, can be referred at this time by positioning through hole 104A and first The relative position of indicating the 33, second cue mark 34 of note and third cue mark 35 is as reference.Finally, positioning draw ring is unclamped 15A, under the action of retaining spring 16A, the head of positioning tie bar 14A is again insertable into corresponding positioning jack, for example, first Positioning jack 85A or the second positioning jack 86A or third positioning jack 87A.

Due to using tool-free adjusting can, operation it is easy and convenient.

As shown in Figure 38 to Figure 46, for the third embodiment of the child's tricycle front-wheel of the present invention.

The top of the fan board shaft bar 822D of drive substrate 8D is equipped with a fan plate thread head 8221D, in fan plate thread head 8221D is equipped with a locking nut 11D.A cylindric abutment sleeve is equipped in the bottom circumferential direction of fan board shaft bar 822D The side wall of 823D, abutment sleeve 823D are equipped with one first locating groove 8232D, one second locating groove 8233D and 1 the Three locating groove 8234D, respectively with 35 phase of the first cue mark 33, the second cue mark 34 and third cue mark hereinbefore It is corresponding.

It is equipped with a rotatable adjusting part 10SD on fan board shaft bar 822D.Adjusting part 10SD includes an adjusting tooth Take turns 10D, a positioning tie bar 14D, a retaining spring 16D, a positioning draw ring 15D, a locking turnover panel 17D and a pair of of overturning torsional spring 18D。

The bottom of adjustment gear 10D is equipped with a cylindric gear sleeve 106D, on the side wall of gear sleeve 106D Equipped with a locking window 1061D, a turnover panel rotation hole 1062D is respectively equipped on the two side of locking window 1061D.In locking The bottom inside of window 1061D is equipped with a limit blend stop 1063D, hereinafter can further be illustrated.Adjustment gear 10D Outside be equipped with a perforative positioning through hole 104D, the top of positioning through hole 104D is equipped with a limit pressure ring 1041D.

Positioning tie bar 14D and retaining spring 16D are arranged in positioning through hole 104D.The middle part of positioning tie bar 14D The prominent 141D of spacing ring equipped with an annular, the prominent 141D of the spacing ring are matched with retaining spring 16D.Positioning tie bar 14D's Top is equipped with a draw ring connecting hole 142D, and positioning draw ring 15D runs through draw ring connecting hole 142D.

As shown in figure 45, locking turnover panel 17D includes one first turnover panel 171D and one second turnover panel 172D, this second The setting direction of turnover panel 172D is in an obtuse angle with first turnover panel 171D, and the head of first turnover panel 171D is equipped with a wedge Mouth 1711D, the both sides of locking turnover panel 17D are respectively equipped with a turnover panel rotating bar 173D and a torsional spring gland 174D, the torsional spring The one end of gland 174D for fixed overturning torsional spring 18D, is also provided with additional on the two side of locking window 1061D Torsional spring gland, no longer illustrates here.The turnover panel rotating bar 173D is matched with turnover panel rotation hole 1062D, the overturning torsional spring 18D is arranged on turnover panel rotating bar 173D.

It is described below and how to use adjusting part 10SD.

As shown in Figure 50 and Figure 51, at this point, locking turnover panel 17D is in the lock state, the first turnover panel item of locking turnover panel 17D 171D is stuck in the first locating groove 8232D, and the bottom end of positioning tie bar 14D resists the second turnover panel 172D of locking turnover panel 17D, Prevent locking turnover panel 17D from overturning.

When needing to adjust the occupation mode of child's tricycle front-wheel, as shown in Figure 52 and Figure 53, pulls out positioning and draw Ring 15D, positioning tie bar 14D uplinks, retaining spring 16D are compressed, and locking turnover panel 17D starts under the action of overturning torsional spring 18D Overturning limits blend stop 1063D, at this point, locking turnover panel 17D is completely from the first locating groove until the first turnover panel 171D is resisted Deviate from 8232D.Then, it pulls positioning draw ring 15D and makes adjustment gear 10D rotations, needed until adjustment gear 10D is reached Position, such as the second locating groove 8233D.Finally, positioning draw ring 15D, under the action of retaining spring 16D, positioning are unclamped Pull rod 14D downlinks, the second turnover panel 172D of the bottom end compressing locking turnover panel 17D of positioning tie bar 14D, the 17D overturnings of locking turnover panel And it is caught in the locating groove of needs.

As shown in Figure 54 to Figure 57, for the 4th kind of embodiment of the child's tricycle front-wheel of the present invention, only show at this time Adjusting part 10SK is shown.

Adjusting part 10SK includes an adjustment gear 10K, certain bit length bar 14K, a retaining spring 16K, a positioning drawing The overturning snail heads of ring 15K and one 19K.Similarly, a locking window is equipped on the side wall of the gear sleeve of the bottoms adjustment gear 10K 1061K is respectively equipped with a turnover panel rotation hole 1062K, the top of locking window 1061K on the two side of locking window 1061K Portion is equipped with a limit card slot 1064K.The middle part of positioning stock 14K is equipped with the prominent 141K of spacing ring of an annular, and the spacing ring is prominent 141K is matched with retaining spring 16K, and a draw ring connecting hole 142K, the positioning draw ring are equipped at the top of positioning stock 14K 15K runs through draw ring connecting hole 142K, and a worm screw main body 143K is equipped in the bottom of positioning stock 14K.The overturning snail head 19K packets The center of snail head horizontal stripe 192K, overturning snail disk 191K containing an overturning snail disk 191K and a strip are equipped with a snail disk circular hole 193K, snail head pin 20K run through the snail disk circular hole 193K and turnover panel rotation hole 1062K, overturning snail disk 191K and the worm screw Main body 143K is matched.

It is described below how adjusting part 10SK uses.

As shown in Figure 58 and Figure 59, overturning snail head 19K is on retraction position, the snail head horizontal stripe of overturning snail head 19K 192K is retracted in limit card slot 1064K.At this point, user can rotate freely adjustment gear 10K.

When being turned to once adjustment gear 10K on the position of the ride mode of needs, user is made using positioning draw ring 15K Stock 14K rotations must be positioned, using the worm screw main body 143K of positioning stock 14K with the overturning snail disk 191K's of overturning snail head 19K Cooperation, overturning snail head 19K start to flip outward, and the snail head horizontal stripe 192K of overturning snail head 19K is protruding, snail head horizontal stripe 192K cards Enter into corresponding locating groove, for example, the first locating groove 8232D, the second locating groove 8233D or third locating groove 8234D, as shown in Figure 60 and Figure 61.Finally.At this point, front-wheel is locked under current ride mode.

When needing to adjust ride mode again, positioning stock 14K is rotated backward so that the snail head of overturning snail head 19K is horizontal 192K deviates from from locating groove, and explanation is not repeated herein.

It can be suitble to the child of different age group with the ride mode of unrestricted choice tricycle due to the use of person, it is safe.

Not limited to this, any change or replacement expected without creative work should all cover the guarantor in the present invention Within the scope of shield.Therefore, protection scope of the present invention should be determined by the scope of protection defined in the claims.

Claims (8)

1. a kind of child's tricycle front-wheel (1,1A) quickly adjusted, including：

One circular rear cover (2)；

One circular protecgulum (3,3A), the protecgulum (3,3A) are removably connected with the rear cover (2)；

One transmission ring (4), the transmission ring (4) are removably disposed in the rear cover (2)；

One drive substrate (8,8A, 8D), the drive substrate (8,8A, 8D) is arranged in the transmission ring (4), described Drive substrate (8,8A, 8D) includes a driving spindle (81), and the drive substrate (8,8A, 8D) is equipped with several radial settings Guiding notch (84), is respectively equipped with a slidable driving arm (12), the driving in the guiding notch (84) Substrate (8,8A, 8D) is equipped with a cylindric abutment sleeve (823D), and the side wall of the abutment sleeve (823D) is equipped with One first locating groove (8232D), one second locating groove (8233D) and a third locating groove (8234D)；

One adjusting part (10SK), the adjusting part (10SK) be rotatably arranged in the drive substrate (8,8A, On 8D)；

One adjusts fluted disc (9), the adjusting fluted disc (9) be located at the drive substrate (8,8A, 8D) and the protecgulum (3, Between 3A), the adjusting fluted disc (9) is equipped with the perforative guiding arc slot (93) of several arcs, the guiding arc slot (93) it is matched with the driving arm (12)；

A pair of pedals component (4T), the pedal assembly (4T) are located at the both ends of the driving spindle (81)；

Wherein, the adjusting part (10SK) include an adjustment gear (10,10A, 10D, 10K), certain bit length bar (14K), One retaining spring (16A, 16D, 16K), a positioning draw ring (15A, 15D, 15K) and an overturning snail head (19K), the overturning snail In head (19K) and first locating groove (8232D), the second locating groove (8233D) and third locating groove (8234D) Any one match；

Wherein, the adjustment gear (10,10A, 10D, 10K) is in a neutral, a deceleration position and a full speed position Between,

When the adjustment gear (10,10A, 10D, 10K) is in neutral, the driving arm (12) is retracted in institute In the guiding notch (84) stated,

When the adjustment gear (10,10A, 10D, 10K) is in deceleration position, the driving arm (12) is along guiding Notch (84) slides in and out, and the driving arm (12) locks the transmission ring (4), and the transmission ring (4) is in the same direction The rotating speed that the driving rear cover (2) in ground carries out rotation and rear cover (2) is less than the rotating speed of the transmission ring (4),

When the adjustment gear (10,10A, 10D, 10K) is in full speed position, the driving arm (12) edge It guiding notch (84) to continue to slide out, the driving arm (12) locks the transmission ring (4) and rear cover (2) It is fixed.

2. the child's tricycle front-wheel according to claim 1 quickly adjusted, the positioning draw ring (15A, 15D, 15K) With magnetism.

3. the child's tricycle front-wheel according to claim 2 quickly adjusted, the protecgulum (3,3A) is equipped with a circle The inner wall of the watch window (32,32A) of shape, the watch window (32,32A) is equipped with window screw thread (321A), described Watch window (32,32A) is equipped with a dismountable cover board (322A), and the cover board (322A) includes a circular cover board master The side wall of body (3221A), the cover plate main body (3221A) is equipped with a cover board connection screw thread (3222A), and the cover board connects It connects screw thread (3222A) to match with the window screw thread (321A), the upper surface of the cover plate main body (3221A) is equipped with One rotation knob (3223A) and a paster paste area (3224A).

4. a kind of child's tricycle front-wheel (1,1A) quickly adjusted, including：

One circular rear cover (2), the rear cover (2) include one annular ring gear (21), the ring gear (21) it is interior Wall circumferential direction is equipped with several internal tooth heads (211), and the center of the rear cover (2) is equipped with a rear cover axis hole (22), the internal tooth The inner circumferential of circle (21) be equipped with one be made of the first fixed gear shaft (23) the first fixed gear shaft array, one by second The swing arm array axis that the second fixed gear shaft array and one that fixed gear shaft (24) forms are made of arm shaft (25), it is described It is respectively equipped with one first transmission gear (5) on first fixed gear shaft (23), distinguishes on second fixed gear shaft (24) Equipped with one second transmission gear (6), second transmission gear (6) is meshed with first transmission gear (5), described Arm shaft (25) on be respectively equipped with a dismountable swing arm unit (7), the swing arm unit (7) includes a swing arm main body (71), a swing arm nut (72), a swing arm cam (73) and a swing arm torsional spring (74), the swing arm main body (71) include a circle The side wall of the swing arm cylinder (711) of tubular, the swing arm cylinder (711) is equipped with a cylinder convex block (712), the cylinder The outer wall of convex block (712) is equipped with the cylinder flange (713) of a pair of parallel setting, is set respectively on the cylinder flange (713) There are a flange hole (714), the both sides of the swing arm cam (73) to be respectively equipped with a convex block spindle nose (731), the convex block Spindle nose (731) runs through the flange hole (714), and the bottom of the cylinder convex block (712) is equipped with a torsional spring fixture block (715), the torsional spring fixture block (715) is equipped with a fixture block circular hole (716), and institute is run through in one end of the swing arm torsional spring (74) The fixture block circular hole (716) stated；

One circular protecgulum (3,3A), the protecgulum (3,3A) is removably connected with the rear cover (2), before described The center for covering (3,3A) is equipped with a protecgulum axis hole (31), the side of the protecgulum axis hole (31) be equipped with a watch window (32, 32A), the circumferential direction of the watch window (32,32A) is equipped with one first cue mark (33), one second cue mark (34) With a third cue mark (35)；

One transmission ring (4), the transmission ring (4) are removably disposed in the rear cover (2), the transmission ring (4) Include the external toothing (41) of an annular, the outer wall circumferential direction of the external toothing (41) is equipped with several external tooth heads (411), described The inner wall circumferential direction of external toothing (41) is equipped with several guiding strips (412) being radially arranged, the bottom of the external toothing (41) Equipped with a pair of annular limited location snap ring (42), a limited ring groove (421), the limit are constituted between the limited location snap ring (42) Position annular groove (421) is matched with the swing arm cam (73) of the swing arm unit (7), the external tooth head (411) and described First transmission gear (5) is meshed, and the internal tooth head (211) is meshed with second transmission gear (6)；

One drive substrate (8,8A, 8D), the drive substrate (8,8A, 8D) is arranged in the transmission ring (4), described Drive substrate (8,8A, 8D) includes a driving spindle (81), and the side wall of the driving spindle (81) is equipped with a fan-shaped tune Section fan plate (82) and four guiding horizontal stripes (83) to extend outward, the regulation fan plate (82) are equipped with a fan board shaft bar (822,822A, 822D), the top of the fan board shaft bar (822,822A, 822D) be equipped with a fan plate thread head (8221, 8221D), the bottom circumferential direction of the fan board shaft bar (822,822A, 822D) is equipped with a cylindric abutment sleeve (823D), The side wall of the abutment sleeve (823D) be equipped with one first locating groove (8232D), one second locating groove (8233D) and It is equipped with a guiding notch (84) on one third locating groove (8234D), the regulation fan plate (82) and guiding horizontal stripe (83), A slidable driving arm (12) is respectively equipped in the guiding notch (84), the driving arm (12) includes a length The both sides of the driving horizontal stripe (121) of strip, the driving horizontal stripe (121) are respectively equipped with a pair of of driving guide rail (1211), described Driving guide rail (1211) matched with the guiding notch (84), the tail portion of the driving horizontal stripe (121) is equipped with a bar The top of the adjusting rod (122) of shape, the adjusting rod (122) is equipped with a limited cap (123), the driving horizontal stripe (121) Head be equipped with the first locking of a pair of of wedge shape and protrude (124), first locking is equipped with a strip between protruding (124) Guiding clip slot (125), the front of the driving horizontal stripe (121) is equipped with the engagement item (126) of " L " font, and described nibbles The head for closing item (126) is equipped with the second locking protrusion (127) of a pair of of wedge shape；

One adjusting part (10SK), the adjusting part (10SK) be rotatably arranged in the fan board shaft bar (822, 822A, 822D) on；

One locking nut (11,11D), the locking nut (11,11D) and described fan plate thread head (8221, the 8221D) phase Cooperation；

One adjusts fluted disc (9), the adjusting fluted disc (9) be located at the drive substrate (8,8A, 8D) and the protecgulum (3, Between 3A), the center of the adjusting fluted disc (9) is equipped with a fluted disc circular hole (91), and the driving spindle (81) is through described Fluted disc circular hole (91), the edge of the adjusting fluted disc (9) is equipped with several fluted disc heads (92), on the adjusting fluted disc (9) If there are five the perforative guiding arc slot (93) of arc, the guiding arc slot (93) is arranged in the fluted disc circular hole (91) In circumferential direction, the guiding arc slot (93) is matched with the adjusting rod (122)；

A pair of pedals component (4T), the pedal assembly (4T) is located at the both ends of the driving spindle (81), described Pedal assembly (4T) include a pedal crankshaft (4T1) and a pedal (4T2)；

Wherein, the adjusting part (10SK) include an adjustment gear (10,10A, 10D, 10K), certain bit length bar (14K), One retaining spring (16A, 16D, 16K), a positioning draw ring (15A, 15D, 15K) and an overturning snail head (19K), the fan board shaft Bar (822,822A, 822D) run through the adjustment gear (10,10A, 10D, 10K), the adjustment gear (10,10A, 10D, 10K) center be equipped with a gear hole (101), the bottom of the adjustment gear (10,10A, 10D, 10K) is equipped with one Cylindric gear sleeve (106D), the side wall of the gear sleeve (106D) be equipped with a locking window (1061D, 1061K), be respectively equipped on the two side of the locking window (1061D, 1061K) a turnover panel rotation hole (1062D, 1062K), the bottom inside of the locking window (1061D, 1061K) is equipped with a limit blend stop (1063D), the lock Only the top of window (1061D, 1061K) is equipped with a limit card slot (1064K), the adjustment gear (10,10A, 10D, 10K) Outside be equipped with a perforative positioning through hole (104A, 104D), the top of the positioning through hole (104A, 104D) is equipped with a limit Position pressure ring (1041A, 1041D), the middle part of the positioning stock (14K) be equipped with an annular spacing ring it is prominent (141A, 141D, 141K), the spacing ring is dashed forward (141A, 141D, 141K) and the retaining spring (16A, 16D, 16K) matches, described Positioning stock (14K) top be equipped with a draw ring connecting hole (142A, 142D, 142K), the positioning draw ring (15A, 15D, 15K) run through the draw ring connecting hole (142A, 142D, 142K), the bottom of the positioning stock (14K) is equipped with a worm screw Main body (143K), the overturning snail head (19K) include the snail head horizontal stripe (192K) of an overturning snail disk (191K) and a strip, The center of the overturning snail disk (191K) is equipped with a snail disk circular hole (193K), and snail head pin (20K) runs through the snail disk Circular hole (193K) and turnover panel rotation hole (1062D, 1062K), the overturning snail disk (191K) and the worm screw main body (143K) is matched；

Wherein, the adjustment gear (10,10A, 10D, 10K) is in a neutral, a deceleration position and a full speed position Between,

When the adjustment gear (10,10A, 10D, 10K) is in neutral, the driving arm (12) is retracted in institute In the guiding notch (84) stated,

When the adjustment gear (10,10A, 10D, 10K) is in deceleration position, the driving arm (12) is along guiding Notch (84) slides in and out, and the first locking of the driving arm (12) protrudes (124) and is caught in the guiding strip (412),

When the adjustment gear (10,10A, 10D, 10K) is in full speed position, the driving arm (12) edge It guiding notch (84) to continue to slide out, second locking protrudes (127) and is caught in the internal tooth head (211).

5. the child's tricycle front-wheel according to claim 4 quickly adjusted, the positioning draw ring (15A, 15D, 15K) With magnetism.

6. the child's tricycle front-wheel according to claim 5 quickly adjusted, the watch window (32,32A) it is interior Wall is equipped with window screw thread (321A), and the watch window (32,32A) is equipped with a dismountable cover board (322A), described Cover board (322A) include a circular cover plate main body (3221A), the side wall of the cover plate main body (3221A) is equipped with a lid Plate connection screw thread (3222A), the cover board connection screw thread (3222A) is matched with the window screw thread (321A), described The upper surface of cover plate main body (3221A) be equipped with a rotation knob (3223A) and a paster paste area (3224A).

7. a kind of installation is just like the children of the child's tricycle front-wheel quickly adjusted described in any one of claim 1 to 6 Tricycle a, including vehicle frame and a pair of rear wheels.

8. a kind of method that the child's tricycle front-wheel quickly adjusted as claimed in claim 6 is adjusted, including step：

1), cover board (322A) is dismantled, using positioning draw ring (15K) so that positioning stock (14K) rotates, overturning snail head (19K) Inwardly overturning, the snail head horizontal stripe (192K) of overturning snail head (19K) is from the first locating groove (8232D) or the second locating groove Abjection in (8233D) or third locating groove (8234D)；

2), rotation adjustment gear (10,10A, 10D, 10K), until adjustment gear (10,10A, 10D, 10K) reaches the position needed It sets；

3) positioning stock (14K), is rotated backward, overturning snail head (19K) flips outward, the snail head horizontal stripe of overturning snail head (19K) (192K) is snapped onto in corresponding locating groove；

4), cover board (322A) is reinstalled.