CN210139935U - Parking locking mechanism of double-front-wheel vehicle - Google Patents

Abstract

The utility model provides a parking locking mechanism of a double-front-wheel vehicle, which comprises a vehicle head vertical pipe, a swinging device, a left front wheel, a right front wheel, a locking device and an operating device; the locking device comprises a stop disc, a base, a mandril, a locking connecting rod and a stop pull rod, wherein the stop disc is fixed at the upper end of the middle part of the swing device, and the upper end of the stop disc is provided with a clamping groove matched with the upper end of the mandril; the base is arranged on one side of the headstock vertical pipe close to the stop disc, and a guide support is arranged on the upper part of one side of the headstock vertical pipe close to the stop disc; the lower end of the ejector rod penetrates through the guide support and then is connected with the first end of the locking connecting rod, and the second end of the locking connecting rod is positioned at the position obliquely below the ejector rod and is arranged on the lower part of the locking pull rod; the lower end of the stopping pull rod is positioned below the ejector rod and is rotatably arranged on the base, and the upper end of the stopping pull rod is connected with the operating device. The utility model discloses can fix the device that sways on the locomotive riser, make it can not the horizontal tilt, keep the upright state of the whole car automobile body of two front wheel cars, stability when guaranteeing that two front wheel cars park.

Description

Parking locking mechanism of double-front-wheel vehicle

Technical Field

The utility model belongs to the technical field of two front wheel vehicles, especially, relate to a parking locking mechanism of two front wheel vehicles.

Background

By two-front-wheel vehicle is meant a new type of vehicle having two steered front wheels and at least one driven rear wheel. In the prior art, a double-front-wheel vehicle generally adopts a principle of parallelogram multi-shaft multi-rod linkage, two front wheels in charge of steering are connected with a head vertical pipe at the front end of a frame by a unique tilting device, and the tilting and bending as the traditional two-wheel locomotive are realized by a changeable parallelogram structure. Unlike a triangle, a parallelogram has instability, can deform under the action of an external force, and two opposite sides always keep a parallel state during deformation. By utilizing the principle, two front wheels of the double-front-wheel vehicle can roll left and right greatly without being limited by a frame and a shock absorber when turning, and three wheels of the whole vehicle are always in contact with the ground, so that the vehicle generates enough positive pressure on the ground through the wheels to balance the centrifugal force applied to the vehicle, and the capability of resisting the side turning of the vehicle when turning is effectively improved.

Although the swing device of the parallelogram structure can improve the stability and the safety of the double-front-wheel vehicle when the double-front-wheel vehicle runs, particularly when the double-front-wheel vehicle turns, when the double-front-wheel vehicle needs to be parked and parked, the swing device of the double-front-wheel vehicle is easy to roll leftwards and rightwards due to the instability of the parallelogram, the whole vehicle body is difficult to keep a vertical state, and the stability of the double-front-wheel vehicle when the double-front-wheel vehicle is parked cannot be ensured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a parking locking mechanism of two front wheel vehicles can be when two front wheel vehicles parking, will sway the device and fix on the locomotive riser, make it can not the horizontal tilt, keep the upright state of two front wheel vehicle whole car automobile bodies, stability when guaranteeing two front wheel vehicles and parking.

The utility model discloses a realize through following technical scheme:

a parking locking mechanism of a double-front-wheel vehicle comprises a vehicle head vertical pipe, a swinging device which is rotatably arranged at the lower part of the vehicle head vertical pipe, a left front wheel and a right front wheel which are arranged at the left side and the right side of the front end of the vehicle head vertical pipe through the swinging device, wherein the upper part of the vehicle head vertical pipe is provided with a vehicle head vertical plate which is connected with the swinging device in a sliding way and is positioned at the rear part of the swinging device;

the parking locking mechanism of the double-front-wheel vehicle further comprises a locking device and an operating device, wherein the locking device is used for fixing the swinging device on the head vertical pipe;

the locking device comprises a stop disc, a base, a mandril, a locking connecting rod and a stop pull rod, wherein the stop disc is fixed at the upper end of the middle part of the swing device, and the upper end of the stop disc is provided with a clamping groove matched with the upper end of the mandril;

the base is arranged on one side of the headstock vertical pipe close to the stop disc, and a guide support is arranged on the upper part of one side of the headstock vertical pipe close to the stop disc;

the lower end of the ejector rod penetrates through the guide support and then is hinged with the first end of the locking connecting rod, and the second end of the locking connecting rod is positioned at the position obliquely below the ejector rod and is hinged with the lower part of the locking pull rod;

the lower end of the stopping pull rod is positioned below the ejector rod and is rotatably arranged on the base, and the upper end of the stopping pull rod is connected with the operating device;

the operating device is arranged on the vertical plate of the vehicle head;

when the operating device moves from the unlocking position to the locking position, the ejector rod moves upwards and is inserted into the clamping groove to lock the stop disc, so that the swinging device is fixed on the vehicle head vertical pipe;

when the operating device moves from the locking position to the unlocking position, the ejector rod moves downwards and is separated from the clamping groove to unlock the stop disc, so that the swinging device can rotate relative to the head vertical pipe.

When the double-front-wheel vehicle needs to be parked and parked, a user controls the operating device to enable the operating device to move from the unlocking position to the locking position, the operating device drives the locking pull rod to rotate around the lower end of the locking pull rod towards the direction of the ejector rod, so that the lower end of the ejector rod is pushed through the locking connecting rod, the ejector rod moves upwards to the clamping groove of the locking disc under the guiding action of the support, the upper end of the ejector rod abuts against the inner wall of the bottom of the clamping groove and is tightly matched with the inner wall of the bottom of the clamping groove, the locking disc is fixed on the head vertical pipe, the locking disc cannot swing left and right relative to the head vertical pipe, and the swinging device is fixed on the head vertical pipe due to the. When the double-front-wheel vehicle needs to normally run, a user controls the operating device to move from the locking position to the unlocking position, the pulling force of the operating device on the stop pull rod disappears, the ejector rod moves downwards and is separated from the stop disc, and the swinging device is restored to a rotatable state relative to the vehicle head vertical pipe.

Compared with the prior art, the beneficial effects of the utility model are that: when the double-front-wheel vehicle is parked, the swinging device can be fixed on the head vertical pipe through the locking device, so that the swinging device cannot incline left and right, the upright state of the whole vehicle body of the double-front-wheel vehicle is kept, and the stability of the double-front-wheel vehicle during parking is ensured.

Furthermore, the locking device also comprises a torsion spring, the torsion spring is arranged between the lower end of the stop pull rod and the base, one end of the torsion spring is fixed on the stop pull rod, and the other end of the torsion spring is fixed on the base. The torsion of the torsion spring can return the stop pull rod to the initial position, so that the ejector rod can be separated from the clamping groove of the stop disc and can return to the initial position.

Furthermore, a plurality of clamping grooves matched with the upper end of the ejector rod are formed in the upper end of the stop disc. The locking disc upper end sets up a plurality of draw-in grooves can increase with ejector pin complex angle scope, when the parking was parked, even the locomotive riser did not reach the vertical condition, also can insert the draw-in groove of locking disc in through the ejector pin to will sway the device and fix on the locomotive riser, avoid the position that the user need accurate adjustment locomotive riser.

Furthermore, the width of the opening part of the clamping groove is larger than that of the bottom part of the clamping groove, and the upper end of the ejector rod and the inner wall of the bottom of the clamping groove are both arc surfaces. The width of the opening part of the clamping groove is larger than that of the bottom part of the clamping groove, so that the ejector rod can be easily inserted into the clamping groove, and the arc surface can reduce the friction force when the ejector rod is separated from the clamping groove.

Furthermore, the locking device also comprises a ball bushing, and the ball bushing is sleeved on the ejector rod. The ball bush can reduce the friction force of the push rod moving in the guide bracket.

Furthermore, the operating device comprises a support, a control handle, a turntable, a stop connecting rod and a parking brake cable, wherein the support is arranged on the vehicle head vertical plate, and the lower end of the control handle is rotatably arranged on the support;

the rotating disc is rotatably arranged on the support and is staggered with the installation position of the control handle;

the first end of the stop connecting rod is rotatably arranged in the middle of the control handle, and the second end of the stop connecting rod is rotatably arranged on the rotary table;

the first end of the parking brake cable is arranged on the turntable and positioned at one side of the second end of the stop connecting rod, and the second end of the parking brake cable is connected with the upper end of the stop connecting rod;

when the control handle is pulled backwards, the operating device moves from the unlocking position to the locking position;

when the control handle is pushed forward, the operating device moves from the locked position to the unlocked position.

When the double-front-wheel vehicle needs to be parked and parked, a user pulls the control handle backwards, the rotating disc is driven to rotate through the stopping connecting rod, and therefore the stopping pull rod is pulled through the parking braking stay cable, and the stopping pull rod rotates around the lower end of the stopping pull rod. When the control handle is pulled backwards, the first end of the control handle and the first end and the second end of the stop connecting rod are located on the same straight line, the operating device is located at a locking position, the parking brake cable rotates around the position where the parking brake cable is installed on the support through the rotating disc, the torque generated by the control handle and rotating around the lower end of the parking brake cable is zero, namely the control handle is located at a dead point position of a four-bar mechanism formed by all parts of the operating device, the parking brake cable cannot drive the control handle to rotate, the parking brake cable keeps the tension on the stop connecting rod, and the locking state of the ejector rod on the stop disc is maintained. When the double-front-wheel vehicle needs to normally run, a user pushes the control handle forwards, the tension of the parking brake cable on the stop pull rod disappears, the ejector rod moves downwards and is separated from the clamping groove of the stop disc under the action of the torsion spring, the swinging device is restored to a rotatable state relative to the head vertical pipe, and the operating device is located at an unlocking position.

Furthermore, the operating device also comprises a spring and a steel ball, the spring is arranged in the control handle, and the steel ball is arranged at one end of the spring and is contacted with the support;

a locking position groove and an unlocking position groove matched with the steel balls are formed in the support;

when the steel ball is positioned in the locking position groove, the operating device is positioned in the locking position;

when the steel ball is positioned in the unlocking position groove, the operating device is positioned in the unlocking position.

When the steel ball got into locking position recess or unblock position recess, under the elasticity effect that receives the spring, can produce the sound and fix a position the suggestion to through steel ball and locking position recess or unblock position recess cooperation, can play the effect that prevents brake valve lever and turn over the pine, avoid arousing brake valve lever because of external disturbance or user mistake touching and rock, lead to operating means to leave locking position or unblock position.

Further, when the operating device is located at the locking position, an included angle between a connecting line of the lower end of the control handle and the second end of the stop connecting rod and a connecting line of the lower end of the control handle and the groove at the locking position ranges from 3 degrees to 5 degrees. The control handle is pulled backwards to a dead point position and then pulled backwards by a small angle, so that the control handle can be prevented from shaking due to external disturbance or mistaken touch of a user, and the control handle is enabled to leave the dead point position.

Furthermore, the parking brake device further comprises a mounting bracket, the mounting bracket is fixed at one side of the upper part of the base, and the second end of the parking brake cable penetrates through the mounting bracket and then is connected with the upper end of the stop pull rod.

Furthermore, the swing device comprises a front rocker arm, a rear rocker arm, a left steering component and a right steering component, and the middle part of the front rocker arm is rotatably arranged at the lower part of the front end of the vehicle head vertical pipe;

the middle part of the rear rocker arm is rotatably arranged at the lower part of the rear end of the vehicle head vertical pipe;

the headstock vertical plate is positioned behind the rear rocker arm, the left end of the headstock vertical plate is provided with a left arc-shaped guide groove, and the right end of the headstock vertical plate is provided with a right arc-shaped guide groove;

the upper end of the left steering component is slidably connected and arranged in the left arc-shaped guide groove, the lower end of the left steering component is connected with the left front wheel, and the front end and the rear end of the lower end of the left steering component are respectively and rotatably arranged at the left ends of the front rocker arm and the rear rocker arm;

the upper end of the right steering component is slidably connected and arranged in the right arc-shaped guide groove, the lower end of the right steering component is connected with the right front wheel, and the front end and the rear end of the lower end of the right steering component are respectively and rotatably arranged at the right ends of the front rocker arm and the rear rocker arm;

the stop disc is fixed at the upper end of the middle part of the front rocker arm.

After all the components of the swing device are assembled, the projection in the vertical direction of the vehicle forms a symmetrical parallelogram, when the vehicle normally runs, the left steering component and the right steering component are kept in a balanced state, the left steering component moves upwards, the corresponding right steering component moves downwards, and the left and right heeling of the whole vehicle can be realized through the up-and-down swing of the swing device, so that the flexibility when the vehicle turns and the stability when the vehicle runs on a high-low road surface are improved.

Drawings

FIG. 1 is a schematic structural view of a parking lock mechanism of a dual front wheel vehicle according to the present invention;

FIG. 2 is a schematic structural view of a locking device in a parking locking mechanism of a dual front wheel vehicle according to the present invention;

FIG. 3 is a sectional view taken along line A-A of a locking device of the parking locking mechanism of the dual front wheel vehicle according to the present invention;

FIG. 4 is a schematic structural view of a parking lock mechanism stopping disc of the dual front wheel vehicle of the present invention;

FIG. 5 is a sectional view taken along line B-B of the parking lock mechanism stopping disc of the dual front wheel vehicle of the present invention;

FIG. 6 is a schematic structural view of the unlocking state of the locking device in the parking locking mechanism of the dual front wheel vehicle according to the present invention;

FIG. 7 is a schematic structural view illustrating a locking state of a locking device in a parking locking mechanism of a dual front wheel vehicle according to the present invention;

fig. 8 is a schematic structural view of the parking lock mechanism of the dual front wheel vehicle according to the present invention, wherein the operation device is located at the unlocking position;

FIG. 9 is a schematic structural view of the parking lock mechanism of a dual front wheel vehicle according to the present invention, wherein the operation device is located at the locking position;

FIG. 10 is a cross-sectional view of a control handle of the parking lock mechanism of the dual front wheel vehicle of the present invention;

FIG. 11 is a schematic structural view of a swing device in a parking lock mechanism of a dual front wheel vehicle according to the present invention;

fig. 12 is a schematic structural view of the tilting state of the swing device in the parking lock mechanism of the dual front wheel vehicle according to the present invention.

In the figure, 1-a head riser, 11-a head riser, 111-a left arc guide groove, 112-a right arc guide groove, 12-a handle, 2-a swing device, 21-a front rocker, 22-a rear rocker, 23-a left steering component, 231-a left steering riser, 232-a left steering branch pipe, 233-a left connecting pipe, 234-a left rolling component, 24-a right steering component, 241-a right steering riser, 242-a right steering branch pipe, 243-a right connecting pipe, 244-a right rolling component, 25-a first connecting piece, 26-a second connecting piece, 27-a third connecting piece, 28-a fourth connecting piece, 3-a left front wheel, 4-a right front wheel, 5-a locking device, 51-a locking disc, 511-a clamping groove and 52-a base, 53-ram, 54-locking link, 55-arresting link, 551-link, 552-bend, 56-guide bracket, 57-ball bushing, 58-torsion spring, 6-operating device, 61-seat, 611-detent position recess, 612-detent position recess, 62-control handle, 63-dial, 64-arresting link, 65-parking brake cable, 66-spring, 67-steel ball, 7-mounting bracket, 8-left damping device, 9-right damping device, 10-braking device.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

In the following description, directions of up, down, front, rear, left, and right are directions viewed from a driver driving a vehicle, and the up and down directions include a vertical direction and substantially up and down directions inclined from the vertical direction; the front, rear, left and right directions include a horizontal direction and substantially front, rear, left and right directions inclined to the horizontal direction.

Please refer to fig. 1, which is a schematic structural diagram of a parking lock mechanism of a dual front wheel vehicle according to the present invention. A parking locking mechanism of a double-front-wheel vehicle comprises a vehicle head vertical pipe 1, a swinging device 2 which is rotatably arranged at the lower part of the vehicle head vertical pipe 1, and a left front wheel 3 and a right front wheel 4 which are arranged at the left side and the right side of the front end of the vehicle head vertical pipe 1 through the swinging device 2, wherein a vehicle head vertical plate 11 which is connected with the swinging device 2 in a sliding way and is positioned at the rear position of the swinging device 2 is fixed at the upper part of the vehicle head vertical pipe 1; the utility model discloses parking locking mechanism of two front wheel vehicles is still including being used for fixing locking means 5 and operating means 6 on locomotive riser 1 with device 2 sways. The left and right rolling of the whole vehicle can be realized through the up-and-down swinging of the swinging device 2, so that the flexibility of the vehicle during steering and the stability during running on a high-low road surface are improved. Meanwhile, when the double-front-wheel vehicle is parked, a user can control the locking device 5 through the operating device 6 to fix the swinging device 2 on the head vertical pipe 1, so that the swinging device cannot incline left and right, the upright state of the whole body of the double-front-wheel vehicle is kept, and the stability of the double-front-wheel vehicle during parking is ensured.

Please refer to fig. 11 and 12 in combination, wherein fig. 11 is a schematic structural diagram of the swing device 2 in the parking locking mechanism of the dual front wheel vehicle of the present invention, and fig. 12 is a schematic structural diagram of the inclined state of the swing device 2 in the parking locking mechanism of the dual front wheel vehicle of the present invention. Specifically, the swing device 2 comprises a front rocker arm 21, a rear rocker arm 22, a left steering component 23 and a right steering component 24, wherein the middle part of the front rocker arm 21 is rotatably arranged at the lower part of the front end of the head riser 1; the middle part of the rear rocker 22 is rotatably arranged at the lower part of the rear end of the head vertical pipe 1; the headstock vertical plate 11 is positioned behind the rear rocker arm 22, the left end of the headstock vertical plate is provided with a left arc-shaped guide groove 111, and the right end of the headstock vertical plate is provided with a right arc-shaped guide groove 112; the upper end of the left steering component 23 is slidably connected and arranged in the left arc-shaped guide groove 111, and the lower end is connected with the left front wheel 3; preferably, the lower end of the left steering component 23 is connected with the left front wheel 3 through the left shock-absorbing device 8, and in addition, a braking device 10 is arranged on the left front wheel 3 to realize a braking function; the front end and the rear end of the lower end of the left steering component 23 are respectively and rotatably arranged at the left ends of the front rocker arm 21 and the rear rocker arm 22; the upper end of the right steering component 24 is slidably connected and arranged in the right arc-shaped guide groove 112, and the lower end is connected with the right front wheel 4; preferably, the lower end of the right steering part 24 is connected with the right front wheel 4 through a right shock absorbing device 9, and in addition, a brake device 10 is arranged on the right front wheel 4 to realize a braking function; the right steering member 24 has front and rear ends at its lower end rotatably mounted to right ends of the front rocker arm 21 and the rear rocker arm 22, respectively.

Preferably, the left arc-shaped guide groove 111 and the right arc-shaped guide groove 112 are concentric arc-shaped grooves symmetrically arranged at two ends of the head vertical plate 11; the left steering component 23 comprises a left steering vertical pipe 231, a left steering branch pipe 232 and two left connecting pipes 233, one end of the left steering branch pipe 232 is fixedly connected to the upper end of the left steering vertical pipe 231, the other end is provided with a left rolling component 234, and the left rolling component 234 is slidably connected and arranged in the left arc-shaped guide groove 111; one ends of the two left connecting pipes 233 are respectively fixed to the front and rear sides of the lower end of the left steering vertical pipe 231, and the other ends thereof are respectively rotatably mounted at the left ends of the front rocker arm 21 and the rear rocker arm 22; the right steering component 24 comprises a right steering riser 241, a right steering branch pipe 242 and two right connecting pipes 243, one end of the right steering branch pipe 242 is fixedly connected to the upper end of the right steering riser 241, the other end of the right steering branch pipe 242 is provided with a right rolling component 244, and the right rolling component 244 is slidably connected and arranged in the right arc-shaped guide groove 112; one ends of two right connecting pipes 243 are respectively fixed at the front side and the rear side of the lower end of the right steering stand pipe 241, and the other ends thereof are respectively rotatably installed at the right ends of the front rocker arm 21 and the rear rocker arm 22; a stopper disk 51 is fixed to the upper end of the middle portion of the front swing arm 21. Specifically, the front rocker arm 21 and the rear rocker arm 22 are fastened from left to right through a first connecting piece 25, a third connecting piece 27, a fourth connecting piece 28 and a second connecting piece 26, wherein the first connecting piece 25 and the third connecting piece 27 are arranged on the left side and the right side of the left steering riser 231, the second connecting piece 26 and the fourth connecting piece 28 are arranged on the left side and the right side of the right steering riser 241, and the third connecting piece 27 and the fourth connecting piece 28 are arranged on the left side and the right side of the head riser 1. Specifically, the handlebar stem 1 is provided with a handle 12. After the components of the swing device 2 are assembled, the projection in the vertical direction of the vehicle forms a symmetrical parallelogram, when the vehicle normally runs, the left steering component 23 and the right steering component 24 are kept in a balanced state, the left steering component 23 moves upwards, the corresponding right steering component 24 moves downwards, and the left and right roll of the whole vehicle can be realized through the up-and-down swing of the swing device 2, so that the flexibility of the vehicle during the steering and the stability of the vehicle during the running on high and low roads are improved.

Please refer to fig. 2 to fig. 7 in combination, wherein fig. 2 is the structural schematic diagram of locking device 5 in the parking locking mechanism of the dual front wheel vehicle of the present invention, fig. 3 is the a-a section view of locking device 5 in the parking locking mechanism of the dual front wheel vehicle of the present invention, fig. 4 is the structural schematic diagram of parking locking mechanism of the dual front wheel vehicle stopping moving disk 51 of the present invention, fig. 5 is the B-B section view of parking locking mechanism stopping moving disk 51 of the dual front wheel vehicle of the present invention, fig. 6 is the structural schematic diagram of locking device 5 unlocking state in the parking locking mechanism of the dual front wheel vehicle of the present invention, fig. 7 is the structural schematic diagram of locking device 5 locking state in the parking locking mechanism of the dual front wheel vehicle of the present invention. Specifically, the locking device 5 comprises a stop disc 51, a base 52, a top rod 53, a locking connecting rod 54 and a stop pull rod 55, wherein the stop disc 51 is fixed at the upper end of the middle part of the swing device 2, and the upper end of the stop disc is provided with a clamping groove 511 matched with the upper end of the top rod 53; preferably, the upper end of the stopping disk 51 is provided with a plurality of slots 511, for example, 3 slots 511 may be provided on the stopping disk 51. The upper end of the stopping disc 51 is provided with the plurality of clamping grooves 511, so that the angle range matched with the ejector rod 53 can be enlarged, and when the parking and parking are carried out, even if the head riser 1 does not reach a vertical state, the ejector rod 53 can be inserted into the clamping grooves 511 of the stopping disc 51, so that the swinging device 2 is fixed on the head riser 1, and the situation that a user needs to accurately adjust the position of the head riser 1 is avoided. Preferably, the width of the opening of the slot 511 is greater than the width of the bottom of the slot 511, and the upper end of the top rod 53 and the inner wall of the bottom of the slot 511 are both arc surfaces. The width of the opening portion of the notch 511 is larger than the width of the bottom portion of the notch 511, so that the push rod 53 can be inserted into the notch 511 more easily, and the arc surface can reduce the friction force when the push rod 53 is separated from the notch 511.

The base 52 can be mounted on the vehicle frame or a component fixed relative to the vehicle frame, in this embodiment, the base 52 is fixed on one side of the head riser 1 close to the stop disc 51, and a guide bracket 56 is fixed on the upper portion of one side of the head riser 1 close to the stop disc 51; the lower end of the push rod 53 penetrates through the guide bracket 56 and then is hinged with the first end of the locking connecting rod 54, and the push rod 53 can only move up and down in the guide bracket 56 under the limitation of the guide bracket 56; preferably, the locking device 5 further comprises a ball bushing 57, and the ball bushing 57 is sleeved on the outer surface of the push rod 53. The ball bushing 57 can reduce the friction of the ram 53 moving in the guide bracket 56. Specifically, the ball bushing 57 is provided with a ball cage in which balls are mounted, and the balls are relatively rotatable inside the ball bushing 57.

The second end of the locking link 54 is located at a position obliquely below the top bar 53 and is hinged to the lower part of the stopper link 55, and specifically, the second end of the locking link 54 is located at a position below and to the left of the top bar 53; the lower end of the stop pull rod 55 is positioned below the top rod 53 and is rotatably arranged on the base 52, and the upper end of the stop pull rod is connected with the operating device 6; specifically, the stopper link 55 includes a connecting portion 551 and a bent portion 552, the connecting portion 551 is connected to the operating device 6 at an upper end thereof, the bent portion 552 is connected to one end thereof at a lower end thereof and is hinged to the second end of the lock link 54, and the other end of the bent portion 552 is rotatably mounted on the base 52.

When the operating device 6 moves from the unlocking position to the locking position, the ejector rod 53 moves upwards and is inserted into the clamping groove 511 to lock the stop disc 51, so that the swinging device 2 is fixed on the vehicle head stand pipe 1; when the operating device 6 moves from the locked position to the unlocked position, the push rod 53 moves downward and is separated from the catch 511 to unlock the stopper disc 51, so that the swing device 2 can rotate relative to the head riser 1. Preferably, the locking device 5 further comprises a torsion spring 58, the torsion spring 58 being disposed between the lower end of the retaining rod 55 and the base 52, one end of the torsion spring 58 being fixed to the retaining rod 55 and the other end being fixed to the base 52. The torsion force of the torsion spring 58 can retract the stopper link 55 to the initial position, so that the plunger 53 can be surely separated from the catching groove 511 of the stopper disc 51 and retracted to the initial position.

Please refer to fig. 8 and fig. 9 in combination, wherein fig. 8 is a schematic structural diagram of the operating device 6 located at the unlocking position in the parking locking mechanism of the dual front wheel vehicle of the present invention, and fig. 9 is a schematic structural diagram of the operating device 6 located at the locking position in the parking locking mechanism of the dual front wheel vehicle of the present invention. Specifically, the operating device 6 comprises a support 61, a control handle 62, a turntable 63, a stop link 64 and a parking brake cable 65, wherein the support 61 can be mounted on the vehicle frame or a part fixed relative to the vehicle frame, in the embodiment, the support 61 is fixed on the vehicle head vertical plate 11, and the lower end of the control handle 62 is rotatably mounted on the support 61 (as shown in position a in the figure); the rotating disc 63 is rotatably mounted on the support 61 (as shown in position D in the figure) and is staggered with the mounting position of the control handle 62, specifically, the rotating disc 63 is located at the front upper position of the lower end of the control handle 62; a first end of the stop link 64 is rotatably mounted on the middle portion of the control handle 62 (as shown at position C), and a second end thereof is rotatably mounted on the turntable 63 (as shown at position B); a first end of a parking brake cable 65 is fixed on the turntable 63 at a position on one side of a second end of the stopper link 64, and a second end thereof is fixedly connected with the upper end of the stopper link 55; after the operating device 6 is mounted, its components form a four-bar linkage. Preferably, the utility model discloses two front-wheel vehicle's parking locking mechanism still includes installing support 7, and its installing support 7 is fixed in base 52 upper portion one side position, and the second end of parking braking cable 65 passes installing support 7 back and the upper end fixed connection of locking pull rod 55. When the control handle 62 is pulled back, the operating device 6 moves from the unlock position to the lock position; in one embodiment, specifically, the control handle 62 is pulled back to the dead center position of the four-bar linkage formed by the components of the operating device 6, even if the lower end of the control handle 62 and the first and second ends of the stopper link 64 are located on the same straight line; when the control handle 62 is pushed forward, the operating device 6 moves from the locked position to the unlocked position.

Referring to fig. 10, fig. 10 is a sectional view of the control handle 62 of the parking lock mechanism of the dual front wheel vehicle according to the present invention. Preferably, the operating device 6 further comprises a spring 66 and a steel ball 67, the spring 66 being disposed inside the control handle 62, the steel ball 67 being disposed at one end of the spring 66 and being in contact with the seat 61; a locking position groove 611 and an unlocking position groove 612 which are matched with the steel ball 67 are formed in the support 61; when the steel ball 67 is located in the detent position recess 611, the operating device 6 is located in the detent position; when the steel ball 67 is located in the unlock position recess 612, the operating device 6 is located in the unlock position. In an embodiment, preferably, when the operation device 6 is located at the locking position, that is, when the steel ball 67 is located at the locking position groove 611, an included angle between a connecting line between the lower end of the control handle 62 and the second end of the stop link 64 and a connecting line between the lower end of the control handle 62 and the locking position groove 611 is in a range of 3 ° to 5 °, in order to prevent the control handle 62 from shaking due to external disturbance or accidental touch of a user, so that the control handle 62 leaves the dead point position, the control handle 62 may be pulled backwards to the dead point position and then pulled backwards by a small angle, and the angle is in a range of 3 ° to 5 °.

When the two-wheel vehicle needs to be parked and parked, the user pulls the control handle 62 backwards, and when the control handle 62 reaches the locking position and hears that the steel ball 67 enters the groove 611 of the locking position, the user can release the control handle 62 when the positioning prompt of sound is generated due to the elastic force of the spring 66. In the process, the control handle 62 rotates the dial 63 via the stopper link 64, thereby pulling the stopper rod 55 via the parking brake cable 65, the stopper link 55 is rotated about its lower end toward the lift pin 53, so that the lower end of the lift pin 53 is pushed by the locking link 54, under the guiding and limiting effect of the guiding bracket 56, the post rod 53 moves upwards to the clamping groove 511 of the stop disc 51, the upper end of the post rod 53 is abutted against and tightly matched with the inner wall at the bottom of the clamping groove 511, the stop disc 51 is fixed on the head riser 1, so that the stop disc 51 can not swing left and right relative to the head riser 1, since the stop disc 51 is fixedly connected with the swinging device 2, thereby fixing the swinging device 2 on the head riser 1, the swing device 2 can not swing left and right relative to the head vertical pipe 1, so that the upright state of the whole vehicle body is kept when the double-front-wheel vehicle is parked and parked, and the stability of the double-front-wheel vehicle during parking is ensured.

When the control handle 62 is located at the locking position, the lower end (position a) of the control handle 62 and the first end (position C) and the second end (position B) of the stopper link 64 are located on the same straight line, and at this time, the parking brake cable 65 rotates around the position (position D) where the parking brake cable is mounted on the support 61 through the turntable 63, and the torque generated by the control handle 62 to rotate around the lower end (position a) is zero, that is, the control handle 62 is located at the dead point position of the four-bar linkage mechanism formed by the components of the operating device 6, and the parking brake cable 65 cannot drive the control handle 62 to rotate, so that the parking brake cable 65 always provides tension to the upper end of the stopper link 55, the push rod 53 is always kept in the clamping groove 511 of the stopper disc 51, and the locking state of the stopper disc 51; meanwhile, the steel ball 67 is matched with the locking position groove 611, so that the control handle 62 can be prevented from being loosened, and the situation that the control handle 62 shakes due to external disturbance or mistaken touch of a user to cause the operation device 6 to leave the locking position is avoided.

When the double-front-wheel vehicle needs to normally run, a user pushes the control handle 62 forwards, the control handle 62 returns to the unlocking position, the turntable 63 returns to the initial position, the tension of the parking brake cable 65 on the stop pull rod 55 disappears, the stop pull rod 55 returns to the initial position under the action of the torsion spring 58, the ejector rod 53 is driven to move downwards and is separated from the clamping groove 511 of the stop disc 51, and the swing device 2 returns to a rotatable state relative to the head riser 1. When control handle 62 pushed forward and arrived the unlocking position, steel ball 67 has the sound to fix a position the suggestion equally when getting into unlocking position recess 612, cooperates with unlocking position recess 612 through steel ball 67 simultaneously, plays the effect that prevents control handle 62 and turn over the pine equally, avoids arousing control handle 62 to rock because of external disturbance or user's mistake touching to inject control handle 62's unlocking position, convenience of customers pulling control handle 62 next time.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims (10)

1. A parking locking mechanism of a double-front-wheel vehicle comprises a vehicle head vertical pipe, a swinging device which is rotatably arranged at the lower part of the vehicle head vertical pipe, and a left front wheel and a right front wheel which are arranged at the left side and the right side of the front end of the vehicle head vertical pipe through the swinging device, wherein the upper part of the vehicle head vertical pipe is provided with the vehicle head vertical plate which is connected with the swinging device in a sliding way and is positioned at the rear position of the swinging device; the device is characterized by also comprising a locking device and an operating device which are used for fixing the swing device on the vehicle head stand pipe;

the locking device comprises a stop disc, a base, a top rod, a locking connecting rod and a stop pull rod, wherein the stop disc is fixed at the upper end of the middle part of the swing device, and the upper end of the stop disc is provided with a clamping groove matched with the upper end of the top rod;

the base is arranged on one side, close to the stop disc, of the headstock vertical pipe, and a guide support is arranged on the upper portion of one side, close to the stop disc, of the headstock vertical pipe;

the lower end of the ejector rod penetrates through the guide support and then is hinged with the first end of the locking connecting rod, and the second end of the locking connecting rod is located at the position obliquely below the ejector rod and is hinged with the lower part of the stopping pull rod;

the lower end of the stop pull rod is positioned below the ejector rod and is rotatably arranged on the base, and the upper end of the stop pull rod is connected with the operating device;

the operating device is arranged on the headstock vertical plate;

when the operating device moves from the unlocking position to the locking position, the ejector rod moves upwards and is inserted into the clamping groove to lock the stop disc, so that the swinging device is fixed on the vehicle head vertical pipe;

when the operating device moves from the locking position to the unlocking position, the ejector rod moves downwards and is separated from the clamping groove to unlock the stop disc, so that the swinging device can rotate relative to the vehicle head stand pipe.

2. The parking lock mechanism for a dual front wheel vehicle as claimed in claim 1, wherein the locking device further comprises a torsion spring disposed between the lower end of the stopper rod and the base, one end of the torsion spring is fixed to the stopper rod, and the other end of the torsion spring is fixed to the base.

3. The parking lock mechanism for a two-front-wheel vehicle according to claim 1, wherein a plurality of locking grooves are formed at an upper end of the brake disc to be engaged with an upper end of the carrier rod.

4. The parking lock mechanism for a double-front-wheel vehicle according to any one of claims 1 or 3, wherein the width of the opening portion of the notch is larger than the width of the bottom portion of the notch, and both the upper end of the ejector rod and the inner wall of the bottom portion of the notch are arc surfaces.

5. The parking lock mechanism of a dual front wheel vehicle as claimed in claim 1, wherein the locking device further comprises a ball bushing fitted over the carrier rod.

6. The parking locking mechanism of a double-front-wheel vehicle as claimed in claim 1, wherein the operating device comprises a support, a control handle, a turntable, a stop connecting rod and a parking brake cable, the support is mounted on a vehicle head vertical plate, and the lower end of the control handle is rotatably mounted on the support;

the turntable is rotatably arranged on the support and is staggered with the installation position of the control handle;

the first end of the stop connecting rod is rotatably arranged in the middle of the control handle, and the second end of the stop connecting rod is rotatably arranged on the rotary table;

the first end of the parking brake cable is arranged on the turntable and positioned at one side of the second end of the stop connecting rod, and the second end of the parking brake cable is connected with the upper end of the stop connecting rod;

when the control handle is pulled backwards, the operating device moves from the unlocking position to the locking position;

when the control handle is pushed forward, the operating device moves from the locking position to the unlocking position.

7. The parking lock mechanism of a double front wheel vehicle according to claim 6, wherein the operating means further comprises a spring provided in the control handle and a steel ball provided at one end of the spring and contacting the seat; a locking position groove and an unlocking position groove matched with the steel balls are formed in the support;

when the steel ball is positioned in the locking position groove, the operating device is positioned in a locking position;

when the steel ball is located in the unlocking position groove, the operating device is located at the unlocking position.

8. The parking lock mechanism for a two-front-wheel vehicle according to claim 7, wherein an angle between a line connecting a lower end of the control lever and the second end of the stopper link and a line connecting a lower end of the control lever and the groove of the lock position ranges from 3 ° to 5 ° when the operating device is in the lock position.

9. The parking lock mechanism of a dual front wheel vehicle as claimed in claim 6, further comprising a mounting bracket fixed to a side position of the upper portion of the base, wherein the second end of the parking brake cable passes through the mounting bracket and is connected to the upper end of the stopper rod.

10. The parking lock mechanism of a double-front-wheel vehicle as claimed in claim 1, wherein the swing device comprises a front rocker arm, a rear rocker arm, a left steering component and a right steering component, and the middle part of the front rocker arm is rotatably arranged at the lower part of the front end of the head riser;

the middle part of the rear rocker arm is rotatably arranged at the lower part of the rear end of the vehicle head vertical pipe;

the headstock vertical plate is positioned behind the rear rocker arm, the left end of the headstock vertical plate is provided with a left arc-shaped guide groove, and the right end of the headstock vertical plate is provided with a right arc-shaped guide groove;

the upper end of the left steering component is slidably connected and arranged in the left arc-shaped guide groove, the lower end of the left steering component is connected with the left front wheel, and the front end and the rear end of the lower end of the left steering component are respectively and rotatably arranged at the left ends of the front rocker arm and the rear rocker arm;

the upper end of the right steering component is slidably connected and arranged in the right arc-shaped guide groove, the lower end of the right steering component is connected with the right front wheel, and the front end and the rear end of the lower end of the right steering component are respectively and rotatably arranged at the right ends of the front rocker arm and the rear rocker arm;

the stop disc is fixed at the upper end of the middle part of the front rocker arm.

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