CN220262956U - Folding three-wheeled vehicle - Google Patents

Abstract

The utility model relates to a folding tricycle following vehicle. The existing folding scooter is only suitable for pedal scooter, but not suitable for electric scooter or electric bicycle with built-in battery. The utility model comprises a frame and a front fork frame, wherein the lower part of the front fork frame is provided with front idler wheels, the rear part of the frame is symmetrically provided with two rear idler wheels, the front fork frame is provided with a vertical rod frame which is hinged and matched with the front fork frame, and the vertical rod frame can be downwards turned and adjusted. The folding electric scooter is simple and reasonable in structure, convenient to fold and store, convenient to carry and suitable for being used for accommodating a battery.

Description

Folding three-wheeled vehicle

Technical Field

The utility model relates to the technical field of walking vehicles, in particular to a folding three-wheel walking vehicle.

Background

Application number 201822138921.0 discloses a footboard folding scooter, and its specific technical scheme is: the steering device comprises a T-shaped steering tube (1), a connecting tube (2) and a pedal (3), wherein the pedal (3) comprises a front pedal (31) and a rear pedal (32) hinged with the rear end of the front pedal (31), and the rear pedal (32) swings around the hinge position until the upper end part of the front pedal (31) forms an included angle with the front pedal (31) or swings until the upper end part of the rear pedal (32) is flush with the upper end part of the front pedal (31) to be in an unfolding state; the front pedal (31) or the rear pedal (32) is close to the end part of the hinge position and is provided with an opening (311), the rear pedal (32) or the front pedal (31) is provided with a locking mechanism (321), and the locking mechanism (321) is matched with the opening (311) to lock so that the upper end part of the rear pedal (32) and the upper end part of the front pedal (31) are flush and are in an unfolding state. Although the scooter can realize a folding state by swinging the rear pedal to the upper end part of the front pedal, the scooter only solves the length problem of the scooter frame, and the folded scooter still occupies a large space in the longitudinal space, and is inconvenient to carry or store.

Application number 201821772805.8 discloses a collapsible scooter, including direction handrail and footboard, the footboard rear end is provided with the walking wheel, the direction handrail bottom is provided with the direction wheel, the footboard includes front bezel, back plate and articulated shaft, the front bezel passes through the articulated shaft with the back plate and articulates, the articulated shaft with front bezel and back plate sliding connection, articulated shaft one end is provided with the elastic component, and the other end is provided with the locking dish, be provided with fixed arch on the locking dish, fixed recess has been seted up to front bezel and back plate near locking dish one side, makes collapsible scooter also can promote the walking and have good theftproof function under the folded condition.

Although the space can be reduced by folding in this application, it is only suitable for folding with a relatively thin pedal structure, and if the frame is too large and heavy, such a folding structure cannot be adopted. Therefore, the folding scooter is only suitable for pedal scooter, but not suitable for electric scooter or electric bicycle with built-in battery, because the bicycle with built-in battery is necessarily provided with a larger frame to accommodate the battery.

In addition, the inventor previously applied for a portable folding scooter, bulletin number 209208944U, and the detailed description part of the specification discloses the following technical scheme: the front frame comprises a roller bracket 14 and a front mud-stopping pedal 17, elastic lugs 19 are arranged on the side parts of the roller bracket, the elastic lugs are linked with the front mud-stopping pedal 17, an adapter 15 connected with the front frame is arranged on the lower part of the handle rod mechanism, and positioning grooves 20 matched with the elastic lugs are respectively arranged on the bottom and the side parts of the adapter. The roller support forms a cavity at two sides, a spring 18 is arranged in the cavity, and the spring is sleeved on the clamping block at the inner end part of the elastic lug.

This patent suffers from two drawbacks:

defect (1): the hollow structure is needed to be made in the inner space of the roller bracket 14, the accommodating cavity of the spring 18 is designed, the elastic lug 19 and the front fender pedal are also needed to be designed into a linkage structure, and finally the positioning grooves 20 are respectively manufactured at the lower part and the rear part of the adapter 15 to be matched with the elastic lug 19, so that the problems of complex structure and higher production cost exist.

Defect (2): in this patent, the handle bar mechanism is maintained in an unfolded or folded state mainly by means of the locking state formed by the mutual clamping of the positioning groove 20 and the elastic projection 19 on the adapter, and the grooving depth of the positioning groove is necessarily limited due to the limitation of the size of the component of the adapter, so that the positioning depth of the positioning groove 20 and the elastic projection 19, that is, the positioning reliability is limited, and therefore, the front mudguard pedal is easy to unlock only by being accidentally triggered by a small stroke, particularly in the folded state. On the other hand, the rear end of the adapter 15 is not provided with a limiting and leaning structure, and the rear part of the adapter is not provided with a limiting structure, so that the stability of the upright rod part is poor in the unfolding riding state.

Therefore, aiming at the problems that the internal structure is complex, the production cost is high, accidental unlocking is easy to cause and potential safety hazard exists in the frame folding technology.

Disclosure of Invention

Aiming at the problems, the utility model provides the folding tricycle with the traveling crane, which has simple and reasonable structure, is convenient to fold and store and is convenient to carry.

The utility model adopts the following technical scheme: the utility model provides a foldable tricycle is along with driving, includes frame and preceding fork carriage, the lower part of preceding fork carriage sets up preceding gyro wheel, the rear portion symmetry of frame sets up two back gyro wheels, set up on the preceding fork carriage rather than articulated complex pole setting frame, pole setting frame can down overturn and adjust, its characterized in that the frame include preceding frame and back frame, can slide between two frames and adjust and make one of them frame hide in the cavity of another frame, the frame on still include a locking mechanism and be used for locking the expansion or the shrink state of frame.

Preferably, the bottom surface of the frame is designed as an arc surface, an arc ring buckle matched with the frame is arranged at the lower part of the frame, and a locking pull ring is arranged at the bottom of the arc ring buckle.

Preferably, the inner cavity of the rear frame is larger than the outer main body of the front frame, and the circular arc ring buckle and the locking pull ring are arranged on the rear frame.

Preferably, the rear frame is provided with a rear pedal, the front frame is provided with a front pedal, and the front pedal can be turned upwards and folded to the upper surface of the rear pedal.

Preferably, the rear ends of the rear frames are integrally formed with two arc-shaped elastic pieces, and the rear ends of the arc-shaped elastic pieces are connected with the rear roller mechanism.

Preferably, the front part of the front fork frame is further provided with a front mudguard hinged and matched with the front mudguard, the front mudguard is normally maintained in an unfolded state to lock the folding or unfolding state of the stand, and a front mudguard locking mechanism is arranged above the front mudguard on the front fork frame.

Preferably, the mud guard is an up-down lifting adjusting structure and is normally kept at an upper position by a reset mechanism; the locking mechanism comprises a rotary table and a clamping hook, wherein the rotary table is arranged on the front fork frame, a dislocation cavity is further formed on the surface of the rotary table, the clamping hook is arranged on the mudguard, the clamping hook clamps the disc surface of the rotary table to realize locking, and after the rotary table rotates, the clamping hook corresponds to the dislocation cavity in position, and then the mudguard is unlocked.

Preferably, the turntable is provided with an arc-shaped limit groove at the periphery of the dislocation cavity, and the top end of the front fork is provided with a limit screw falling into the limit groove.

Preferably, the front mudguard is hinged with the front fork frame, the front mudguard is always kept in an upward horizontal state by the reset mechanism in a normal state, the locking mechanism comprises a locking plate hinged on the front fork frame and positioned above the front mudguard, the locking plate can be turned up and down for adjustment, a locking piece is arranged at the inner end of the locking plate, the locking piece forms limit locking on the front mudguard in a normal state, and the locking piece releases the locking on the front mudguard after the locking plate is turned up.

Preferably, the locking piece is a limiting pin connected to the inner end of the locking plate, a groove is formed in the upper end face of the front fender, the locking plate is arranged in the groove, and a pull ring is formed on the outer end face of the upper portion of the locking plate.

The utility model has the beneficial effects that:

1. the frame adopts a front-back telescopic frame structure, one frame can be hidden in the other frame, the whole length of the frame can be greatly shortened after folding, and the folded or unfolded frame is reliably locked by the locking mechanism, so that the operation is convenient.

2. The folding structure of the front fender is improved, the front fender is locked in a limiting state, and the front fender is additionally provided with a limiting locking mechanism, so that the front fender is prevented from being unlocked accidentally, the reliability and safety of the vehicle during traveling or carrying are improved, and the cost is reduced.

3. The rear shock-absorbing structure of the frame and the frame are integrally formed, so that the rear shock-absorbing structure of the frame has a good shock-absorbing effect and is convenient for modularized assembly production.

4. The front fork frame, the vertical rod frame, the front mudguard and the front shock absorbing structure can be produced in a modularized manner, and the front mudguard and the front shock absorbing structure are suitable for two-wheel or three-wheel vehicles and are very flexible and convenient to switch in production according to market demands.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic structural view of the frame of the present utility model.

Fig. 3 is a schematic view of the folded structure of the present utility model.

Fig. 4 shows a folding structure of a pole stand according to the present utility model.

Fig. 5 shows a folding structure of another upright post frame according to the present utility model.

Fig. 6 is a schematic view of the embodiment of the pole frame of fig. 5 after folding.

Detailed Description

The utility model will be further illustrated with reference to specific examples.

The foldable tricycle following vehicle as shown in fig. 1-3 comprises a vehicle frame and a front fork frame 19, wherein a front shock absorber 7 and a front roller 8 are arranged at the lower part of the front fork frame, two rear rollers 16 are symmetrically arranged at the rear part of the vehicle frame, a vertical rod frame 5 which is hinged with the front fork frame is arranged on the front fork frame, the vertical rod can be turned down for adjustment, the vehicle frame comprises a front vehicle frame 9 and a rear vehicle frame 15, one of the two vehicle frames can be hidden in a cavity of the other vehicle frame through sliding adjustment, and a locking mechanism is further arranged on the vehicle frame and used for locking the unfolded or contracted state of the vehicle frame.

In one embodiment, the inner cavity of the rear frame 15 is larger than the outer main body of the front frame 9, a circular arc ring buckle 14 is arranged on the rear frame adjacent to the front frame, and a locking pull ring 13 is arranged at the lower part of the circular arc ring buckle. The locking pull ring is mainly used for locking the circular arc ring buckle, so that the frame is ensured to maintain a reliable fixing structure in a telescopic or unfolding state.

In order to enable the arc ring buckle to be better matched with the frame in a fitting way, the bottom surface of the frame is designed to be an arc surface, and the arc ring buckle is matched with the shape of the frame.

In order to lead the front frame and the rear frame to be more accurately matched with each other, step grooves 22 are formed on two sides of the lower part of the front frame, and guide blocks matched with the step grooves are formed on the inner side of the rear frame on the lower part.

In one embodiment, a rear pedal 12 is provided on the rear frame 15, and a front pedal 10 is provided on the front frame 9, and the front pedal can be turned upwards and folded to the upper surface of the rear pedal. The front pedal and the rear pedal are connected at the joint through the rotating shafts 20 at the two sides, so that the front pedal can conveniently turn upwards until being folded above the rear pedal.

Specifically, the front pedal forms the side edge 11 of borduring in both sides, and the side edge of borduring hugs closely the front frame, forms reliable assembly, prevents that front pedal 10 from accidentally turning up, influences the riding.

Specifically, a front limiting plate 23 is arranged at the position where the front part of the front frame is adjacent to the front spring plate, and is limited by the pedal main body after the upper part is folded after the front frame is retracted into the rear frame.

In one embodiment, two arc-shaped elastic pieces 21 are integrally formed at the rear end of the rear frame, and the rear ends of the arc-shaped elastic pieces are connected with the rear roller mechanism. The arc-shaped elastic sheet forms a ring buckle at the tail end for positioning the rotating shaft bearing. The arc spring plate and the center of the rear frame form a spacing groove, so that the arc spring plate has better elasticity.

In one embodiment, the arc spring piece 21 is fixed on the rear frame through a fastener, and is of a split type structure, so that different arc spring pieces can be replaced according to the need to provide different damping effects, and personalized refitting can be met.

A brake pedal 17 is also arranged above the tail end of the rear frame and is connected to the rotating shaft at the tail end of the rear frame, and can be pressed down to directly contact with the rear roller to realize braking. The bottom end face of the groove is provided with spaced friction ribs. The center of the upper portion of the brake pedal is formed with a cleat 18. The brake pedal can be in a dovetail shape and has the function of a mud guard.

Besides the design that the frame is integrally and telescopically adjusted, the front handlebar and the upright post frame structure also have folding functions, and the utility model is further described below:

the front part of the front frame is provided with a front fork 19, the front part of the front fork is also provided with a front mudguard which is in hinged fit with the front fork, the upper part of the front fork is provided with a vertical rod frame which is in hinged fit with the front mudguard, and the front mudguard 6 maintains an unfolding state in a normal state to realize the locking of the folding or unfolding state of the vertical rod 5.

The pole setting frame comprises an outer pole setting and an inner pole setting 2, the outer pole setting and the inner pole setting are also telescopic loop bar structures, the inner pole setting can be retracted and hidden in the outer pole setting, and a locking buckle 3 is arranged at the joint of the outer pole setting and the inner pole setting. The front part of the outer upright post is also provided with an illuminating lamp 4, and the rear part of the upright post frame can be optionally additionally provided with an outer hanging battery (not shown in the figure) according to the requirement, so that the endurance mileage is increased.

The handle bar 1 can be folded downwards at 90 degrees to be stored, so that the space occupied by the handle bar in the transverse direction is reduced.

In order to further improve the locking function of the front fender to the stand, a front fender locking mechanism needs to be provided above the front fender on the front fork.

As shown in fig. 4, in one embodiment of the front fender locking mechanism: the front mudguard 6 is hinged with the front fork frame, and is always kept in an upward horizontal state by a reset mechanism in a normal state, the locking mechanism comprises a locking plate 24 hinged on the front fork frame and positioned above the mudguard, the locking plate can be turned up and down for adjustment, a locking piece is arranged at the inner end of the locking plate, the locking piece forms limit locking on the front mudguard in a normal state, and the locking piece releases the locking of the front mudguard after the locking plate turns up.

The locking piece is a limiting pin connected to the inner end of the locking plate, a groove is formed in the upper end face of the front mudguard, the locking plate is arranged in the groove, and a pull ring 25 is formed on the outer end face of the upper portion of the locking plate.

In the embodiment, a spring drag hook is arranged at the lower part of the front fork frame, a hook frame is arranged below the mud guard, and the spring drag hook is matched with the hook frame. The spring drag hook is arranged on the base at the bottom of the front fork frame, the drag hook is matched with the hook frame at the inner end of the front mudguard, and the inner end of the mudguard is ensured to be always pulled by the spring drag hook to maintain the unfolded state to form a limit on the opposite rod.

This embodiment of the front fender locking mechanism is normally: the mud guard is always positioned at the upper horizontal position under the action of the spring drag hook, at the moment, the rear end face of the mud guard is abutted against the front end face of the vertical rod frame, the rear end face of the vertical rod frame is abutted against the limit stop 26, and the vertical rod frame is always kept in an upright state. The upper part of the rear end of the mudguard is locked and limited by a limiting pin at the center of the rear end of the locking plate. At this time, the mudguard cannot be pressed downward, and the reliability of the upright state of the upright frame is ensured.

Folding state: when the stand is required to be placed upside down, the locking plate is turned upwards, the position of the limiting pin is changed along with the position of the locking plate after the locking plate is turned over, so that the front end of the front fender can be pressed down, the rear end face of the fender releases the limit of the front end of the stand after being pressed down in place, the stand can be placed upside down towards the rear end, after the stand is placed upside down, the lower end face of the stand is rotated to the front end and then is in abutting fit with the rear end face of the front fender after being reset, and the rear part of the stand is limited by the limit stop block for the second time. At the moment, the locking plate is turned downwards to return, the limiting pin is returned to limit the front fender again, the front fender is locked again and cannot be pressed downwards, and locking of the upright pole frame in a folding state is ensured.

As shown in fig. 5, another embodiment of the front fender locking mechanism is as follows: the mud guard is of an up-down lifting adjusting structure and is normally kept at an upper position by a reset mechanism; the locking mechanism comprises a rotary table 29 and a clamping hook 27, the rotary table is arranged on the front fork 19, a dislocation cavity 30 is further formed on the surface of the rotary table, the clamping hook 27 is arranged on the front mudguard 6, the clamping hook clamps the disc surface of the rotary table 29 to realize locking, and after the rotary table rotates, the clamping hook corresponds to the dislocation cavity in position to realize unlocking of the mudguard. To facilitate pulling of the turntable, a pull handle 28 may be provided on the side of the turntable.

The periphery of the dislocation cavity on the turntable forms an arc-shaped limit groove 32, and the top end of the front fork is provided with a limit screw 31 falling into the limit groove. The turntable is placed on the front fork frame, and the position and the steering of the turntable are locked through the limit screw, so that clockwise or anticlockwise rotation can be realized.

In this embodiment, the front portion of front fork frame forms a plurality of vertical guide arms, and the fender is installed on vertical guide arm, vertical guide arm on set up reset spring, reset spring's upper end is supported by the fender lower extreme, reset spring's lower extreme is supported by the lower extreme supporting part of front fork frame. The reset structure of the mud guard is formed by arranging a plurality of vertical guide rods and reset springs, so that the mud guard is ensured to be always positioned above to lock the upright rod. The reset spring is arranged on the guide rod and can also play a role in limiting and guiding.

This embodiment of the front fender locking mechanism is normally: the front mudguard is always positioned at the upper position under the action of the return spring, at the moment, the rear end face of the mudguard is abutted against the front end face of the upright post frame, the rear end face of the upright post frame is abutted against the limit stop 26, and the upright post frame is always kept in an upright state. The clamping hook above the mud guard is clamped and fixed with the disc surface of the turntable, so that the mud guard cannot be pressed downwards, and the reliability of the upright state of the upright pole frame is ensured.

As shown in fig. 6, the folded state: when the stand is required to be placed upside down, the turntable is rotated, the dislocation cavity corresponds to the position of the clamping hook, the mudguard is pressed down at the moment, the clamping hook can penetrate out of the dislocation cavity, so that the mudguard can be pressed down, the rear end face of the mudguard releases the limit of the front end of the stand, the stand can be placed upside down towards the rear end, the lower end face of the stand is rotated to the front end and then is in abutting fit with the rear end face of the mudguard after resetting, and the rear part of the stand is limited by the limit stop for the second time. At the moment, the turntable is rotated backwards, so that the dislocation cavity is staggered with the clamping hook, the clamping hook is positioned above the disk surface of the turntable again, the mud guard is locked again and cannot be pressed down, and locking of the upright pole frame in a folding state is ensured.

It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

Claims (10)

1. The utility model provides a foldable tricycle is along with driving, includes frame and preceding fork (19), the lower part of preceding fork (19) sets up preceding gyro wheel (8), the rear portion symmetry of frame sets up two back gyro wheels (16), set up on the preceding fork rather than articulated complex riser frame (5), the riser frame can down overturn and adjust, its characterized in that the frame include preceding frame (9) and back frame (15), can slide between two frames and adjust and make one of them frame hide in the cavity of another frame, the frame on still include a locking mechanism and be used for locking the expansion or the shrink state of frame.

2. The foldable tricycle following vehicle according to claim 1, wherein the bottom surface of the vehicle frame is designed as an arc surface, an arc ring buckle (14) matched with the vehicle frame is arranged at the lower part of the vehicle frame, and a locking pull ring (13) is arranged at the bottom of the arc ring buckle (14).

3. A folding tricycle as claimed in claim 2, characterised in that the rear frame has a larger cavity than the outer body of the front frame, and the circular arc clasp (14) and locking tab (13) are provided on the rear frame (15).

4. A folding tricycle as claimed in claim 1 or 3, characterised in that the rear frame is provided with a rear pedal (12), the front frame is provided with a front pedal (10), and the front pedal (10) can be folded up over to the upper surface of the rear pedal.

5. The foldable tricycle following vehicle according to claim 1, characterized in that the rear end of the rear frame is integrally formed with two arc-shaped elastic pieces (21), and the rear end of the arc-shaped elastic pieces (21) is connected with a rear roller mechanism.

6. The foldable tricycle as claimed in claim 1, wherein the front part of the front fork (19) is further provided with a front fender (6) hinged and matched with the front fork, the front fender maintains an unfolded state in a normal state to lock the folding or unfolding state of the stand (5), and a front fender locking mechanism is arranged above the front fender on the front fork.

7. The foldable tricycle as claimed in claim 6, wherein the front fender (6) is a lifting adjusting structure and is normally kept at an upper position by a reset mechanism; the locking mechanism comprises a rotary table (29) and a clamping hook (27), wherein the rotary table is arranged on a front fork frame (19), a dislocation cavity (30) is further formed on the surface of the rotary table, the clamping hook (27) is arranged on a mud guard (6), the clamping hook clamps the disc surface of the rotary table (29) to realize locking, and the rotary table rotates to enable the clamping hook to correspond to the dislocation cavity to realize unlocking of the mud guard.

8. The foldable tricycle as claimed in claim 7, wherein the turntable is provided with an arc-shaped limit groove (32) at the periphery of the dislocation cavity, and the top end of the front fork is provided with a limit screw (31) falling into the limit groove.

9. The foldable tricycle is characterized in that the front mudguard (6) is hinged with the front fork frame (19), the front mudguard is always kept in an upward horizontal state by a reset mechanism in a normal state, the locking mechanism comprises a locking plate (24) hinged on the front fork frame and positioned above the mudguard (6), the locking plate can be turned up and down for adjustment, a locking piece is arranged at the inner end of the locking plate, the locking piece forms limit locking on the front mudguard in a normal state, and the locking piece releases the locking on the front mudguard after the locking piece turns up.

10. The foldable tricycle as claimed in claim 9, wherein the locking member is a stopper pin connected to an inner end of the locking plate, a groove is formed in an upper end surface of the front fender, the locking plate is fitted into the groove, and a pull ring (25) is formed on an upper outer end surface of the locking plate.