Summary of the invention
It is single not transformable the technical problem to be solved by the present invention is to solve the structure type of perambulator in the prior artTechnological deficiency.
In order to solve the above technical problem, the present invention provides technical solution it is as follows: a kind of form can Fast transforms formula it is virginVehicle includes at least vehicle frame, and the front end of the vehicle frame is connected with front fork, and the upper end of the front fork is connected with handlebar, the front forkLower end is connected with front-wheel, and the vehicle frame is equipped with vehicle seat, and the rear end of the vehicle frame is equipped with rear fork, and the two sides of the rear fork are equipped with phaseMutual symmetrical fork shaft, further includes two rear-wheels being respectively arranged on the fork shaft of rear fork two sides, and the rear-wheel includes front end face with afterEnd face, the diameter of the front end face are greater than the diameter of rear end face, are equipped between the front end face and rear end face close to front end face oneSide location and the changeover portion that is located between location and rear end face, wherein the diameter of changeover portion is from location backwards faceIt gradually becomes smaller；The center of the rear-wheel is equipped with the axis hole for axially penetrating through the rear-wheel, and being arranged side by side in the axis hole has positive peaceTankage and reversed mounting groove；The fork shaft is connected by the positive mounting groove or reversed mounting groove of quick assembling mechanism and rear-wheel；TwoThere are two installation conditions for the rear-wheel tool: front end face is with respect to installation condition and rear end face with respect to installation condition.
A kind of preferred embodiment, the inside of the fork shaft are equipped with accommodating chamber, and the accommodating chamber is spacious in the free end of fork shaftMouthful, at least two axially extending elongated slots are along the circumferential direction laid in the cavity wall of the accommodating chamber, the elongated slot is in fork shaftFree end end face on it is open.
A kind of preferred embodiment, the quick assembling mechanism include at least elastic arm, and the elastic arm is set in the elongated slot,One end of the elastic arm is fixedly connected with the slot bottom of elongated slot, and the protrusion of side radially inward of the free end of the elastic arm is equipped withThe radially side protrusion of interior protuberance, the free end of the elastic arm is equipped with evagination fixture block, and the outer diameter of the evagination fixture block is bigIn the shaft hole diameter of the rear-wheel, the evagination fixture block is equipped with the card access surface towards rear fork side and the maximum from evagination fixture blockTo the guide surface far from the extension of rear fork side and reduced diameter at outer diameter.
A kind of preferred embodiment, further includes dismounting button, and the dismounting button is equipped with for being inserted into pressing in accommodating chamberButton cylinder, the barrel of the button cylinder is along the circumferential direction equipped with quantity and position and the one-to-one card slot of elastic arm, describedThe width of card slot is adapted with interior protuberance and the interior protuberance is located in the card slot.
A kind of preferred embodiment is equipped with spring between dismounting button and the bottom of chamber of accommodating chamber.
A kind of preferred embodiment, the free end of the button cylinder are equipped with the convex edge for fixed spring.
The two sides of a kind of preferred embodiment, the front-wheel are equipped with pedal mounting hole.
The two sides of a kind of preferred embodiment, the rear-wheel are equipped with deep gouge.
A kind of preferred embodiment further includes the buckle closure being adapted to the deep gouge.
A kind of preferred embodiment is additionally provided with elastic washer between dismounting button and the fork shaft.
A kind of form of the present embodiment can Fast transforms formula perambulator, have following intentional technical effect:
(1) two sides of rear fork are symmetrically installed there are two rear-wheel, since the rear-wheel has positive mounting groove and reversed mounting grooveTwo installation sites, i.e., not only can be with formal dress, but also counter can fill；
(2) two rear-wheel front end faces are opposite install in the state of, due to two rear-wheels the distance between location connectClosely, two rear-wheels can be regarded as a rear wheel, under this state, which is equivalent to two wheeler, and children ride over the two-wheeled perambulatorAfter upper, moving ahead for perambulator is realized with constantly kicking backward by bipod；
(3) rear-wheel rear end face is opposite install in the state of, due to two rear-wheels be spaced between location it is respectiveChangeover portion, then two rear-wheels the distance between location it is larger, under this state, which is equivalent to tool there are two rear wheel,Tricycle is constituted together with front-wheel, under this state, after children ride the perambulator, will not be fallen two less touch with the ground；
(4) it is connected, can be quickly switched between two states by quick assembling mechanism between rear-wheel and fork shaft, so that shouldThe constructive variation multiplicity of perambulator, interest increase, and the perambulator can use the longer time with child grows.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, rightThe present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, andIt is not used in the restriction present invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "inner", "outside" etc. indicateOrientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouchIt states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,Therefore it is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phaseEven ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, is integrally connected, may be a detachable connection；It can be withIt is the connection inside two elements；It can be directly connected, it can also indirectly connected through an intermediary, for the general of this fieldFor logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As shown in Figs. 1-2, a kind of form of the present embodiment can Fast transforms formula perambulator, including vehicle frame 10, the vehicle frame 10Front end is connected with front fork 20, and the upper end of the front fork 20 is connected with handlebar 30, and lower end is connected with front-wheel 40.It is wherein close on vehicle frame 10The position of rear end is equipped with vehicle seat 70, and the rear end of the vehicle frame 10 is equipped with rear fork 60.
As the maximum improvement of the present embodiment, as shown in figure 5, wherein the two sides of rear fork 60 are equipped with symmetrical fork shaft61, the inside of the fork shaft 61 is equipped with accommodating chamber 62, and the accommodating chamber 62 is open in the free end of fork shaft 61.
In the present embodiment, fork shaft 61 is separately installed with a rear-wheel 50 for installing rear-wheel 50 on a pair of of fork shaft.WhereinThe quick assembling mechanism for installing rear-wheel is provided on fork shaft, for this purpose, be along the circumferential direction laid in the cavity wall of accommodating chamber 62 toFew two axially extending elongated slots 63, the elongated slot 63 is in open in the free end end face of fork shaft.Preferably, long in the present embodimentThe quantity of slot 63 is four.
Further, the quick assembling mechanism in the present embodiment includes elastic arm 64, which is set in the elongated slot 63,Wherein one end of the elastic arm 63 is fixedly connected with the slot bottom of elongated slot 63, and the side radially inward of the free end of the elastic arm 64 is convexIt is equipped with interior protuberance 68 out, the radially side protrusion of the free end of the elastic arm 64 is equipped with evagination fixture block 65.
As shown in figure 4, the rear-wheel 50 being connect by quick assembling mechanism with fork shaft in the present embodiment, including front end face 51 and rear endFace 52, wherein the diameter of the front end face 51 is greater than the diameter of rear end face 52, and between the front end face 51 and rear end face 52Equipped with close to 51 side of front end face location 53 and the changeover portion 54 that is located between location 53 and rear end face 52.It needsBright, wherein the diameter of changeover portion 54 gradually becomes smaller from 53 backwards face of location.
In the present embodiment, wherein the center of rear-wheel 50 is equipped with the axis hole 55 for axially penetrating through the rear-wheel, as the present embodimentMaximum improvement, being arranged side by side in the axis hole 55 has positive mounting groove 56 and reversed mounting groove 57.Wherein fork shaft by installing fastlyThe positive mounting groove or reversed mounting groove of structure and rear-wheel can be attached.
Wherein, the outer diameter of the evagination fixture block 65 of quick assembling mechanism is greater than the shaft hole diameter of the rear-wheel 50, the evagination fixture block 65To extending far from rear fork side and diameter equipped with the card access surface 66 towards rear fork side and from the maximum outside diameter of evagination fixture blockDiminishing guide surface 67.
In its installation process, the axis hole of rear-wheel is inserted on fork shaft, first at the maximum outside diameter of evagination fixture block and in axis holeWall contact, and trend elastic arm curves inwardly, during insertion, when evagination fixture block enters positive mounting groove or reversed peaceAfter tankage, elastic arm restores to nature, at this point, rear-wheel is limited on fork shaft by evagination fixture block, realizes Fast Installation.ItsThe effect of middle guide surface is, elastic arm deformation is guided in insertion process, it is easier to be inserted into.
It further include dismounting button 70 as shown in Fig. 3, Fig. 6, which is equipped with holds for being inserted into the present embodimentReceive intracavitary button cylinder 71, the barrel of the button cylinder 71 is along the circumferential direction equipped with quantity and position and elastic arm correspondsCard slot 72, the width of the card slot 72 is adapted with interior protuberance 68 and the interior protuberance is located in the card slot.
As shown in Figure 9, Figure 10, when needing to remove rear-wheel, it is only necessary to which pressing dismounting button 70, the slot bottom of card slot 72 are directIt acts in interior protuberance 68, elastic arm is driven to curve inwardly deformation, until evagination fixture block 65 is from positive mounting groove or reversed installationDeviate from slot, at this point, there is no positioner between rear-wheel and fork shaft, can easily extract rear-wheel from fork shaft.So knotThe dismounting button of structure, structure is simple so that the disassembly enhanced convenience of wheel, quickly.The wherein presence of guide surface, so that in bulletProperty brachiocylloosis deformation process in, interfered after avoiding evagination fixture block and positive mounting groove or reversed mounting groove.
Preferably, in order to make dismount button be maintained at certain position, wherein dismounting button and accommodating chamber bottom of chamber itBetween be equipped with spring 80.Also, the free end of the button cylinder is equipped with the convex edge 73 for fixed spring.
In the present embodiment, as shown in Fig. 3-4,7-8, the two sides of rear-wheel are equipped with deep gouge 58, are equipped with adaptation in the deep gouge 58Buckle closure 59, button will be dismounted and be covered in the axis hole of rear-wheel.Its role is to, appearance looks elegant, while preventing dismounting buttonFalse triggering.
It as shown in Fig. 3,7-8, dismounts and is additionally provided with elastic washer 90 between button and fork shaft, to realize the limit of dismounting buttonAnd sealing.
In the present embodiment, wherein there are two installation conditions for the rear-wheel tool of perambulator: i.e. Fig. 1 and front end face shown in Fig. 9 are oppositeInstallation condition and Fig. 2, rear end face shown in Fig. 10 are with respect to installation condition.Wherein, Fig. 1 and state shown in Fig. 9, are equivalent to two-wheeledVehicle, Fig. 2 and state shown in Fig. 10, are equivalent to tricycle.
In addition, preferably, as shown in Figure 1, the two sides of front-wheel are equipped with pedal mounting hole 41, tricycle shown in Fig. 2Under state, pedal 42 is installed in pedal mounting hole 41, can be realized and realize moving ahead for perambulator by trampling pedal.
In short, the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all in the present inventionSpirit and principle within made any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention itIt is interior.