The present invention makes in view of above situation, and its purpose is to provide a kind of vehicle's steering handle locking mechanism, and wherein, lock set is installed does not need special carriage, and therefore, number of components is few, and price is low, and outward appearance is good.
In order to achieve the above object, the invention provides a kind of vehicle's steering handle locking mechanism, this vehicle forms the front tube portion that extends along up and down at the front end of vehicle frame, and chimeric pivotally and supporting is formed at the boss that turns to of front fork in the periphery of this front tube portion; It the 1st is characterised in that: at interior all setting-in lock sets of above-mentioned front tube portion, this lock set has the lock pin that haunts according to key operated, and the lockhole that engages when this lock pin protrudes is located at the above-mentioned boss that turns to.
According to the 1st feature, utilize all setting-in lock sets of hollow bulb of front tube portion within it, so this installation carriage especially can reduce the quantity of parts, cost-cutting.And, because the lock set in the front tube portion does not form the salient that protrudes from the front tube portion outside, so also can improve the outward appearance of vehicle.
The present invention also has the 2nd feature on the basis of above-mentioned feature: install in above-mentioned lock set with the key operated ignition lock that opens and closes the engine ignition loop, arrange the lead that links to each other with this ignition lock in above-mentioned front tube portion.
According to the 2nd feature, the lead that links to each other with ignition lock can be housed in the vehicle frame, thereby can further improve outward appearance.
The present invention the above-mentioned the 1st or the basis of the 2nd feature on, also have the 3rd feature: above-mentioned lock set constitutes the lid shape of inaccessible above-mentioned front tube portion open end.
According to the 3rd feature, the lid of the inaccessible front tube portion of lock set double as open end does not need special-purpose lid, thereby can further reduce number of components and improve outward appearance.
Below with reference to the accompanying drawings shown in one embodiment of the invention form of implementation of the present invention is described.
Fig. 1 is the lateral plan of equipment of small motor cart that has the steering handle locking mechanism of the present invention the 1st embodiment, Fig. 2 is that the main portion of Fig. 1 is amplified longitudinal section, Fig. 3 be Fig. 23 to view, Fig. 4 is the 4-4 line cutaway view of Fig. 1, Fig. 5 is that 5 ones of Fig. 1 amplify longitudinal section, Fig. 6 be Fig. 56 to view, Fig. 7 is the two-wheeled lateral plan of the present invention the 2nd embodiment, Fig. 8 be the main portion amplification longitudinal section of Fig. 7.
At first, from the explanation of Fig. 1-the 1st embodiment of the present invention shown in Figure 6.
In Fig. 1, the vehicle frame 2 of equipment of small motor cart 1 by front tube portion 2h, the 2d of lower extending tube portion, the 2b of bottom tube portion, and the back pipe 2r of portion constitute.This front tube portion 2h is down configuration obliquely forward, the 2d of this lower extending tube portion down extends backwards obliquely from the lower end of this front tube portion 2h, the 2b of this bottom tube portion is from the lower end on even keel extension substantially towards the rear of the 2d of this lower extending tube portion, and this back pipe 2r of portion up extends backwards obliquely from the rear end of the 2b of this bottom tube portion.
Front tube portion 2h, the 2d of lower extending tube portion and the 2b of bottom tube portion are integrally formed by a steel pipe, constitute front frame 2F.The back pipe 2r of portion is formed by the steel pipe that is independent of front frame 2F, constitutes rear portion vehicle frame 2R.These front portions and rear portion vehicle frame 2F, 2R are interconnected by transom 30 and are integral.Its joint construction will be explained below.
The front fork 4 that is used to support front-wheel 3f is installed at front tube portion 2h, at the 2b of bottom tube portion tread portion 5 is installed, install in the bottom of the back pipe 2r of portion and to be used to supporting and the drive unit power plant 6 of trailing wheel 3r and to be disposed at auxiliary vehicle frame 7 above this unit power plant 6, rear mudguard 8 above auxiliary vehicle frame 7 integrally formed covering trailing wheel 3r, and accommodate Fuel Tank 9, in addition, set up taillight 10 in the rear end.
Insert the support column 12a of vehicle seat 12 in the upper end of the back pipe 2r of portion, and with its clamping.
As shown in Figures 1 and 2, front fork 4 is fixedly installed on the both sides that turn to boss 11, by constituting with the telescopic fork pin of the pair of right and left 4a, the 4b that turn to boss 11 to extend abreast substantially, is supporting front-wheel 3f in the lower end of two fork pin 4a, 4b with axle downwards.
Turn to boss 11 to be matched with the periphery of above-mentioned front tube portion 2h pivotally by up and down a pair of radial thrust bearing 13a, 13b.At this moment, turn to boss bear box 18a, the outer ring of 18b setting-in radial thrust bearing 13a, 13b in week in the both ends about in the of 11 being formed at.The inner ring of the radial thrust bearing 13b of bottom is bearing in the taper stage portion 14 that makes progress that is formed at above-mentioned front tube portion 2h and lower extending tube portion 2d border, and the inner ring of the radial thrust bearing 13a on top is fixing in the ring nut 15 of front tube portion 2h upper end periphery by screw joint.
Turn to turning to handle 16a, 16b in the back installation that turns to boss 11.That is, the integrally formed up and down a pair of handle mount pad 17,17 that turns in the back that turns to boss 11, by they and with bolt connected about a pair of bottom that turns to handle 16a, 16b that turns to handle cover 18,18 clamping pair of right and left respectively.Therefore, turn to handle 16a, 16b, front fork 4 and front-wheel 3f are turned round to the left and right by revolution operation to the left and right.
The upper end of front tube portion 2h is open, in the cylindric assembly shell 21 of this open end inner peripheral surface by setting-in lock sets 20 such as being pressed into, the open end of inaccessible thus front tube portion 2h.That is the trim of lock set 20 double as sealing front tube portion 2h open end.
As shown in Figure 3, lock set 20 has revolution 22 of key hole 23 in the 21 central part settings of assembly shell, this revolution 22 by the specific key 24 that inserts key hole 23 in the steering handle lock position L of open position OFF and its both sides and 3 rotated position of make position ON.When turning round son 22 when open position OFF is turned back to steering handle lock position L, the sidewall that lock pin 25 connects assembly shells 21 protrudes, and when getting back to open position OFF, returns in the assembly shell 21; Allow that its through hole that passes through 26 is located at front tube portion 2h when this lock pin 25 protrudes, the lockhole 27 that the leading section of lock pin 25 engages has formed end shape at the inner peripheral surface that turns to boss 11.
At lock set 20, in the ignition lock of the ignition circuit that is used for opening and closing above-mentioned unit power plant 6 driving engine 6a is housed, the open position OFF at revolution 22 places off-state with this ignition circuit, at make position ON, this ignition circuit is placed closure state.Key 24 is for the insertion of key hole 23 and extract and can carry out at the open position OFF and the steering handle lock position L of revolution 22.
Lower end at assembly shell 21, the lead 28 that continues and link to each other with above-mentioned ignition lock, this lead 28 is at the hollow bulb distribution of front tube portion 2h, the 2d of lower extending tube portion and the 2b of bottom tube portion, draw from lead outlet 29 (with reference to Fig. 5), be routed to the ignition circuit of above-mentioned driving engine 6a at the rearward end opening of the 2b of bottom tube portion.About lead outlet 29, will describe in detail in the back.
Like this, to turn round son 22 as key 24 and forward steering handle lock position L to the key hole 23 that inserts lock set 20, then lock pin 25 protrudes into outside the assembly shell 21 and engages with the lockhole 27 that turns to boss 11, so, the rotation of the front fork 4 that can stop and turn to boss 11 to link to each other, make and to turn to, thereby can prevent that two-wheeled 1 is stolen.
Lock set 20 utilizes the hollow bulb setting-in of front tube portion 2h all within it, so its installation does not need special carriage, thereby can reduce number of components, cost-cutting.And, because the lock set 20 in the front tube portion 2h does not form the salient that protrudes from front tube portion 2h outside, so, the outward appearance of vehicle 1 can be improved.
Because the lead 28 that links to each other with the interior ignition lock that is contained in lock set 20 is at the hollow bulb distribution of front tube portion 2h and the 2d of lower extending tube portion, so the special closure assembly that need not cover this lead just can further improve the outward appearance of vehicle 1.
Because the trim of lock set 20 double as sealing front tube portion 2h open end, so, do not need special-purpose lid, just can further reduce components number and improve outward appearance.
As Fig. 1 and shown in Figure 4, the integrally formed stop ledge 25a in two back, the 25b of fork pin 4a, 4b are installed with plastic stopper element 26a, 26b thereon about front fork 4.When front fork 4 is turning to when rotating under the effect of handle 16a, 16b, these stopper elements 26a, 26b contact is in the side of the 2d of lower extending tube portion, thereby stipulated to buffering the revolution limit of front fork 4, promptly turn to the maximum angle of deflection of handle, therefore, the revolution limit at front fork 4 does not produce impact, and stopper element 26a, 26b can not produce scar in the outside of the 2d of lower extending tube portion yet.Above-mentioned stop ledge 25a, 25b also are used for the location of core when casting front fork 4.
In Fig. 5 and Fig. 6,2b of bottom tube portion and the back pipe 2r of portion are connected separably by transom 30.Transom 30 usefulness aluminium alloy compression castings form, at the 1st connection pipe 30 of along continuous straight runs extension
1The rear end one be connected with the 2nd connection pipe 30 that extends towards the back upper place
2, at two connection pipes 30
1, 30
2Downside a grooving 31 that extends along fore-and-aft direction is set.Form the joint boss 32,32 of many group (being 3 groups in illustrated example) pair of right and left along the fore-and-aft direction configuration at the madial wall in opposite directions of this grooving 31.
Like this, at the 1st connection pipe 30
1The rearward end that cooperates the lower extending tube 2d of portion is at the 2nd connection pipe 30
2The bottom that cooperates the back pipe 2r of portion engages the joint boss 32,32 that each is organized by bolt 33, and extruding grooving 31 is by the 1st connection pipe 30
1And the 2nd connection pipe 30
2Fastening lower extending tube 2d of portion and the back pipe 2r of portion then can fuse two 2d of pipe portion, 2r mutually.In addition, unclamp above-mentioned bolt 33, just can be from the 1st and the 2nd connection pipe 30
1, 30
2 Extract 2d of lower extending tube portion and the back pipe 2r of portion, with its decomposition.Therefore, suitably change the front frame 2F that constitutes by front tube portion 2h, the 2d of lower extending tube portion and the 2b of bottom tube portion and comprise the rear portion vehicle frame 2R of the pipe 2r of portion afterwards, just can easily constitute variform multiple vehicle frame 2 with the different member of form.
At the 1st and the 2nd connection pipe 30
1, 30
2Pars intermedia, form otch 29a, the 29b of semicircle shape respectively in two madial walls of grooving 31, constitute lead outlet 29 by it.Draw above-mentioned lead 28 from this lead outlet 29, be routed to the ignition circuit of above-mentioned driving engine 6a.Like this, lead outlet 29 can easily form and not reduce the intensity of vehicle frame 2, and can easily carry out this distribution.
Two madial walls on grooving 31 tops, the integrally formed pair of right and left unit power plant that supports above-mentioned unit power plant 6 swingably hangs boss 34.Like this, the transom 30 that connects front frame 2F and rear portion vehicle frame 2R also possesses the function of supporting unit power plant 6, thereby structure is simplified.
The following describes Fig. 7 and the 2nd embodiment of the present invention shown in Figure 8.
This embodiment is applicable to and has the vehicle frame 2 of carrying on the back matrix type.That is, the leading section decurvation of the vehicle frame 2 of steel pipe system back of the body matrix type ground is formed in front tube portion 2h, this front tube portion 2h by about a pair of radial thrust bearing 13a, 13b can turn to twelve Earthly Branches to forward to boss 11.Inner peripheral surface in the bottom of the opening of front tube portion 2h is by setting-in such as being pressed into not with the lock set 20 of ignition lock.This lock set 20 has lock pin 25, this lock pin 25 haunts when its revolution turns round with key 24, allow that the through hole 26 of its perforation is located at the lower sides of front tube portion 2h when this lock pin 25 protrudes, the lockhole 27 that this lock pin 25 engages is located at the bottom inner peripheral surface that turns to boss 11.
Downside at vehicle frame 2 is installed the unit power plant 6 that comprises driving engine 6a, and side is installed Fuel Tank 9 and vehicle seat 12 thereon.
Among the figure,, omit its detailed description adopting the reference marks identical with it with the cooresponding part of the foregoing description.
The invention is not restricted to the various embodiments described above, in the scope that does not break away from its main idea, can make multiple design modification.For example, also can constitute front fork 4, with single armed supporting front-wheel 3f with a pin formula.In addition, the present invention also goes for bicycle.