CN106347527B

CN106347527B - Electric vehicle anti-falling auxiliary device driven by push rod motor

Info

Publication number: CN106347527B
Application number: CN201610986643.7A
Authority: CN
Inventors: 吴仁渭
Original assignee: Individual
Current assignee: Wu Renwei
Priority date: 2016-11-09
Filing date: 2016-11-09
Publication date: 2022-03-11
Anticipated expiration: 2036-11-09
Also published as: CN106347527A

Abstract

The invention discloses an electric vehicle anti-falling auxiliary device driven by a push rod motor. When the electric vehicle is slightly braked and decelerated, the driving device can enable the supporting wheel to move downwards to a position close to the ground, and the supporting wheel is only close to the ground without contact, so that the abrasion of the supporting wheel is effectively prevented. When the electric vehicle is completely braked to the bottom, the supporting wheels completely touch the ground, so that the purpose of preventing the electric vehicle from falling sideways can be achieved by supporting the ground through the supporting wheels during temporary parking without supporting the ground by two feet of a user. The driving device utilizes the push rod motor to be matched with the swing rod, the traction wire is connected to the middle of the swing rod, the swing rod is pushed by controlling the push rod motor, the swing rod is pulled and enables the support to swing so as to drive the support wheel to move up and down, the swing rod utilizes a lever principle, the load of the push rod motor is effectively reduced, and the service life of the whole driving device is prolonged.

Description

Electric vehicle anti-falling auxiliary device driven by push rod motor

Technical Field

The invention belongs to an anti-falling auxiliary device of an electric vehicle driven by a push rod motor.

Background

With the gradual improvement of the living standard of people, a pedal type electric bicycle (electric bicycle for short) has become the most widely used daily vehicle for people, so that the safety performance of the bicycle is improved, and the potential safety hazard of the bicycle is eliminated, which is closely related to every family. Before the invention is made, the prior electric vehicle has the following defects in the driving process: when the vehicle is temporarily parked, the feet of the driver need to leave the stepping area and extend to the ground to support the vehicle. In this state, since the positions supported by both feet are already beyond the width of the vehicle, some inconvenience is brought to the driver: in rainy days, the shoes and the trouser legs can be wetted by rain and water flowing down along the rain cape, which brings great discomfort to the travelers. Especially, people who go out of office do not have the conditions of drying and changing and washing, which is more troublesome. Particularly, if the vehicle is positioned on a road section with heavy traffic, vehicles on two sides come and go, and the two feet are easily rolled by the wheels, so that the consequences are more unreasonable.

The Chinese patent with application number 201410715614.8 discloses an auxiliary device for safety driving of an electric vehicle, which comprises a middle support, a support wheel, a traction component, a first pedal component, a second pedal component and the like, wherein the traction component, the first pedal component and the second pedal component drive and control the middle support and the support wheel to swing. After the device is additionally arranged on the existing pedal type electric bicycle, the corresponding technical effect can be realized, firstly, a driver can conveniently finish related actions of parking and starting in a foot treading area of the bicycle without extending two feet to the ground to support the bicycle, so that the trouble caused by that the driving shoes and trouser legs are wetted by rain and water flowing down along a rain cape in rain is avoided for the driver, and particularly, the driver who goes out and goes to work is more troublesome because the driver does not have drying and washing conditions; if the vehicle runs on a road section with heavy traffic, vehicles on two sides come and go, and the two feet are easily rolled by the wheels, so that the consequences are more unimaginable. Secondly, in some situations, for example after a tire burst, the vehicle can be slowly pushed with the aid of the two supporting wheels, which is convenient and advantageous for the protection of the tire and the rim.

The auxiliary device adopts a mechanical control mode for control, the brake is stepped by feet, the middle support is pulled to rotate and put down to realize the landing of the supporting wheel, the landing of the supporting wheel in the whole process is a single process, namely, the landing of the supporting wheel can be realized by stepping on the pedal once.

The electric bicycle has the advantages that the user can decelerate for many times in the running process of the electric bicycle, the riding stop times are few, the user does not need to touch the supporting wheel in the decelerating process, and only needs to touch the supporting wheel to prevent the electric bicycle from falling laterally when the user stops, so that the supporting wheel touches the ground when the electric bicycle decelerates every time, the electric bicycle does not completely stop to advance, and the supporting wheel is quickly abraded in the decelerating process.

Secondly, the pedal of pure mechanical structure tramples and causes the supporting wheel to support the ground, and required strength is great, and the user unilateral exerts force for a long time, easily makes unilateral shank debilitate, causes to use the discomfort.

Disclosure of Invention

The invention aims to provide an electric vehicle anti-falling auxiliary device driven by a push rod motor, which can achieve the purpose of preventing side falling by supporting the ground through a supporting wheel during temporary parking without supporting the ground by two feet of a user; the supporting wheel can be close to the ground in advance in the process of decelerating, and the supporting wheel can be in contact with the ground only when the battery car stops completely, so that the supporting wheel is effectively prevented from being abraded, and the supporting wheel can quickly land quickly in response.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: an electric vehicle anti-falling auxiliary device driven by a push rod motor comprises a power supply, a speed reducing device, a control mechanism, a driving device and a supporting wheel which is in contact with the ground and can prevent the electric vehicle from falling sideways;

the speed reducing device comprises an operating arm, wherein the operating arm can be a brake handle, a brake pedal or other operating rods;

the control mechanism comprises a first-order starting switch and a second-order starting switch, the first-order starting switch and the second-order starting switch can start the driving device, the first-order starting switch and the second-order starting switch are connected with the operating arm, and the starting and the stopping of the two starting switches are controlled through the movement of the operating arm; the control mechanism also comprises a first-order interrupt switch, and when the supporting wheel moves and is close to the ground, the first-order interrupt switch is started to stop the supporting wheel from further moving; the first-order starting switch, the second-order starting switch and the first-order interruption switch are all connected with a driving device, and the driving device is connected with the supporting wheel.

When the operation arm is controlled, the first-order starting switch is closed to enable the driving device to work, and the driving device enables the supporting wheel to move and approach the ground;

when the supporting wheel is close to the ground, the supporting wheel touches and triggers the first-order interrupt switch, or the first-order interrupt switch is indirectly triggered through the driving device, the first-order interrupt switch stops the driving device from running, and the supporting wheel stops moving;

when the user controls the operating arm again, the operating arm touches the second-order starting switch, the second-order starting switch enables the driving device to operate again, the supporting wheel operates to the maximum moving value and contacts the ground, and the function of assisting in preventing the battery car from falling sideways is achieved.

The driving device comprises a push rod motor, a connecting piece and a bracket; the support comprises a support rod and a reset piece, one end of the support rod is hinged with the vehicle body, the reset piece enables the support to reset, and the support wheel is pivoted to the other end of the support rod; the push rod motor comprises a push rod; the connecting piece is including being used for dragging the pull wire that rotates the bracing piece, and pull wire one end joint support pole, the push rod is connected to the pull wire other end. The support rotates by pulling the traction rope through the push rod, and the supporting wheel contacts the ground.

In order to reduce the thrust required by pulling the traction rope by the push rod, the connecting piece further comprises a swing rod with one end hinged to the vehicle body, the other end of the swing rod is hinged to the push rod, one end of the traction wire is connected with the supporting rod, the other end of the traction wire is connected onto the swing rod, the arm of force can be prolonged by additionally arranging the swing rod, the motor load required by pulling the traction rope is reduced, and the load of a push rod motor is reduced.

For the connection stability who improves articulated department, the hinged end of preferred bracing piece is equipped with the sprocket, the one end that the pull wire is connected with the bracing piece is equipped with the chain, the chain is connected with the sprocket, and the realization pull rope that the cooperation of sprocket and chain can be stable is to dragging of support and rotate.

Preferably, a movable sleeve is arranged at the joint of the connecting piece and the swing rod, the movable sleeve is sleeved outside the swing rod, a fastening piece used for fixing the sleeve and the swing rod is arranged on the sleeve, and the movable sleeve can adjust the fixed position of the traction rope on the swing rod and is used for adjusting the swinging distance of the support, so that the swinging distance of the support wheel is adjusted.

Preferably, the middle part of the traction line is provided with an elastic part for buffering rigid pulling force, and the direct rigid pulling force can easily break the chain of the traction rope, so the elastic part is additionally arranged for buffering.

The electric vehicle anti-falling auxiliary device driven by the push rod motor further comprises a rotating handle, the reset piece can adopt an elastic piece as a reset piece, the purpose of resetting is achieved by utilizing the elasticity of the elastic piece, an electric mechanical structure is preferably adopted as the reset piece in the invention, the reset piece comprises a reversing mechanism for controlling the driving device to be electrified and to move reversely and a reversing switch for controlling the reversing mechanism to be started, and the rotating handle is connected with the reversing switch. The reversing switch is controlled through the rotating handle, the supporting wheel can be folded by rotating the rotating handle, namely, the supporting wheel of the auxiliary device is folded when the electric vehicle is accelerated, the logical property of normal use is met, the difficulty of operation is improved without additionally arranging the reversing switch, and the auxiliary device is more convenient to use.

Regarding the reverse rotation of the motor, a multifunctional motor, namely a motor with a reverse rotation function, can be adopted, but due to the high cost, the invention is preferable that the reverse mechanism is an electromagnetic relay comprising a coil and a plurality of magnetic switches, the reverse switch is used for controlling the on-off of the coil, the coil can be controlled through a rotating handle to reversely connect the motor and the power supply, the reverse rotation is realized through reversely connecting the power supply, the structure is light, the cost is low, and the damage is not easy.

When the reversing switch is in an open circuit state, the coil is not electrified, the magnetic switch enables the push rod motor to be positively connected with the power supply, the push rod motor moves in the positive direction, the push rod pulls the connecting piece to enable the support to rotate in the positive direction, and the support wheel approaches to the ground;

when the rotating handle is rotated, the rotating handle triggers the reversing switch, the coil is electrified, the magnetic switch enables the push rod motor to be reversely connected with the power supply, the push rod motor moves reversely, the push rod moves reversely, the support restores to the original position under the action of the resetting piece, and the supporting wheel is far away from the ground.

The reversing mechanism further comprises a coil protection module, wherein the coil protection module comprises a protection switch, and the protection switch and the first-order starting switch or the second-order starting switch are triggered simultaneously, namely when the first-order starting switch or the second-order starting switch is triggered randomly, the protection switch is started simultaneously; when the first-order starting switch or the second-order starting switch is in a starting state, the protection switch enables the reverse switch to be disconnected with the coil.

The protection switch has the function of preventing contradiction, namely, the brake and the rotating handle are rotated to accelerate, so that the supporting wheel is in the contradiction of descending and ascending; therefore, after the protection switch is additionally arranged, when the brake and the acceleration exist at the same time, the brake is judged, the coil is difficult to be electrified by the reversing switch, and the supporting wheel is put down or cannot be reset.

The operating arm can be a brake handle, a brake pedal or other operating rods, the preferred operating arm is a brake handle, the operating arm is controlled through a hand, and the operation is more convenient and simpler than a pedal type brake hand brake type brake operation.

The auxiliary device also comprises a middle support used for supporting and erecting the battery car, and the support is the middle support. Combine together auxiliary device and well support, further reduce required extra support, avoid the condition of a plurality of supports, make well support play the function that the supporting wheel made its reciprocate of swing.

Compared with the prior art, the anti-falling auxiliary device for the electric vehicle driven by the push rod motor has the following beneficial effects that:

firstly, the driving device controls the supporting wheels to move downwards and support the ground by controlling the operating arm under the condition that the two feet do not leave the foot stepping area of the vehicle, and the two supporting wheels land to assist in stabilizing the vehicle, so that the driver can avoid the worry that the two feet are drenched and rolled.

The auxiliary device in the implementation is controlled by matching the power supply with the mechanical part, and a user does not need to use excessive force to frequently lift the supporting wheel, so that the use is easier and more convenient, and fatigue or discomfort in use is avoided.

Thirdly, the operating arm touches a first-order starting switch when a user decelerates, the driving device controls the supporting wheel to move downwards to a position close to the road surface, and a first-order interruption switch is triggered when the supporting wheel is close to the road surface to stop the driving device; when the user controls the operating arm to stop, the second-order starting switch is closed, and the driving device is started again to enable the supporting wheel to contact the ground.

Through the setting of first-order interrupt switch for auxiliary device can make the supporting wheel remove to being close to the ground position when the vehicle slows down, plays the purpose of pre-contact, also can play certain function of preventing falling to the side when the vehicle slows down, and effectively guarantees that the supporting wheel can not take place wearing and tearing because of contacting ground when slowing down.

Through the setting of second order starting switch for storage battery car is when the stationary, and the supporting wheel contacts ground completely, plays complete anti-falling function.

The driving device utilizes the push rod motor to be matched with the swing rod, the traction wire is connected to the middle of the swing rod, the swing rod is pushed by controlling the push rod motor, the swing rod is pulled and enables the support to swing so as to drive the supporting wheel to move up and down, the swing rod utilizes a lever principle, the load of the push rod motor is effectively reduced, the service life of the whole driving device is prolonged, and meanwhile, the defects that the supporting wheel cannot land quickly due to long stroke of the driving motor are overcome by the devices such as the swing rod and the traction rope.

Drawings

FIG. 1 is a schematic structural diagram of a control mechanism in an embodiment of an anti-falling auxiliary device of an electric vehicle driven by a push rod motor according to the present invention;

FIG. 2 is a schematic structural diagram (initial state) of the driving device and the supporting wheel in the present embodiment;

FIG. 3 is a schematic structural diagram (first-order state) of the driving device and the supporting wheel in the present embodiment;

FIG. 4 is a schematic structural diagram (second-order state) of the driving device and the supporting wheel in the present embodiment;

FIG. 5 is a circuit diagram of the control mechanism in the present embodiment;

fig. 6 is a schematic connection diagram of each module in this embodiment.

Reference numerals: 75. a pull wire; 75e, a chain; 75f, an elastic member; 8. a support; 82. a support bar; 82a, a sprocket; 84. a support wheel; 87a, a push rod motor; 87b, a reverse rotation stop switch; 87d, a first order interrupt switch; 87f, a movable sleeve; 87g of oscillating bar; 87h, a push rod; 88. operating arm/brake lever; 88e, a first-order starting switch; 88f, a protection switch; 88g, a second-order starting switch; 88h, a reversing switch; 88k, bending the plate; 88s, push plate;

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the anti-falling auxiliary device for the electric vehicle driven by the push rod motor comprises a power supply, a speed reducer, a control mechanism, a driving device and a supporting wheel 84;

a speed reduction device: as shown in fig. 1, the reduction gear includes an operating arm that employs a brake lever 88 as an operating control end; a bent plate 88k for contacting the same-order starting switch 88e and the protection switch 88f is fixed behind the brake lever, a push plate 88s which can contact the second-order starting switch 88g when the brake lever is completely gripped is also arranged behind the brake lever, and the push plate 88s is positioned at the upper tail end of the bent plate 88 k.

When the speed is reduced, the brake lever 88 is half-gripped for speed reduction, and the bent plate 88k simultaneously contacts the first-order starting switch 88e and the protection switch 88 f; when the brake lever 88 is held to the bottom in preparation for full parking, the push plate 88s contacts the second-order start switch 88 g.

A driving device: as shown in fig. 2 to 4, the driving device includes a push rod motor 87a, a swing rod 87g, a reset member, a connecting member and a bracket 8;

the support 8 adopts the middle support of the electric vehicle, the support 8 comprises a support rod 82 and a reset piece, one end of the support rod 82 is hinged with the vehicle body, a chain wheel 82a is arranged on the support rod 82 at the hinged end, and a support wheel 84 is pivoted at the other end of the support rod 82.

The push rod motor 87a comprises a push rod 87h, a swing rod 87g is hinged on the vehicle body, and the other end of the swing rod 87g is hinged with the push rod 87 h.

The connecting piece is including being used for dragging the pull wire 75 that rotates bracing piece 82, and the one end that pull wire 75 and bracing piece 82 are connected is equipped with chain 75e, and chain 75e is connected with sprocket 82a, through the cooperation of chain with the sprocket for it is more stable when dragging the pull wire.

The other end of the traction wire 75 is provided with a movable sleeve 87f, the movable sleeve 87f is sleeved outside the swing rod 87g, and a fastening piece for fixing the sleeve and the swing rod 87g is arranged on the sleeve. The movable sleeve 87f can realize the adjustment of the fixed position of the traction rope on the swing rod 87g, and is used for adjusting the swing distance of the bracket 8, and further adjusting the swing distance of the supporting wheel 84.

The middle of the traction wire 75 is provided with an elastic member 75f for buffering a rigid pulling force. The direct rigid pulling force can easily break the chain of the hauling rope, so an elastic part is added for buffering.

The middle support is also provided with a locking mechanism for fixing the middle support so that the middle support does not rotate. Can fix well support through locking mechanism, prevent that it from kick-backing, support the removal that the supporting wheel of bottom can realize the storage battery car in through, when the rear wheel of storage battery car damaged, can support manually with well, die locking mechanism lock, later support through the supporting wheel and can promote the storage battery car and go forward, provide convenience for pushing away after blowing out.

The support wheel 84 is provided with a ratchet structure for unidirectional rotation. The electric vehicle can be prevented from slipping backwards when being positioned on a slope.

The device also well solves the defect that the supporting wheel cannot land quickly due to longer stroke of the driving motor through the devices such as the swing rod, the traction rope and the like

Reset piece: the reset piece comprises a rotating handle, a reversing mechanism and a reversing switch 88h, the reversing mechanism is used for controlling the driving device to be electrified and reversely move, the rotating handle is connected with the reversing switch 88h, and the reversing switch 88h is used for controlling the reversing mechanism to be started.

The reversing mechanism is an electromagnetic relay 102, the electromagnetic relay 102 comprises a coil and 3 magnetic switches G1, G2 and H, and a reversing switch 88H is used for controlling the coil to be powered on and powered off;

when the reverse switch 88h is in an open circuit state, the coil is not electrified, the magnetic switch enables the push rod motor 87a to be positively connected with the power supply, the push rod motor 87a moves positively, the push rod 87h pulls the connecting piece to enable the bracket 8 to rotate positively, and the supporting wheel 84 approaches to the ground;

when the rotating handle is rotated, the rotating handle triggers the reversing switch 88h, the coil is electrified, the magnetic switch enables the push rod motor 87a to be reversely connected with the power supply, the push rod motor 87a moves reversely, the push rod 87h moves reversely, the support 8 restores to the original position under the action of the resetting piece, and the support wheel 84 is far away from the ground.

A control mechanism: the control mechanism comprises a first-order starting switch 88e and a second-order starting switch 88g for starting the driving device, the first-order starting switch 88e and the second-order starting switch 88g are both connected with the operating arm, and the control mechanism also comprises a first-order interruption switch 87d for stopping the movement of the supporting wheel 84 when the supporting wheel 84 moves and is close to the ground; the first-order start switch 88e, the second-order start switch 88g, and the first-order interrupt switch 87d are connected to the drive device.

The control mechanism also comprises a coil protection module, the coil protection module comprises a protection switch 88f, and the protection switch 88f is triggered simultaneously with the first-order starting switch 88e or the second-order starting switch 88 g; when the first-order start switch 88e or the second-order start switch 88g is in the on state, the protection switch 88f disconnects the reverse switch 88h from the coil.

The control mechanism further includes a reverse rotation end switch 87b that stops the operation of the reverse mechanism when the support wheels are completely reset; when the supporting wheel returns to the initial position, the reversal terminating switch 87b triggers and stops the power supply of the coil in the reversal mechanism, so that the electromagnetic relay 102 is restored, the push rod motor 87a is connected with the power supply again, and the operating arm can be reused.

The anti-falling auxiliary device of the electric vehicle driven by the push rod motor further comprises a plurality of indicating lamps and a touch switch:

the inching switch 104 is positioned in a treading area of the left foot or the right foot of the pedal, and the inching switch 104 is used for starting the anti-falling auxiliary device and connecting a power supply for the anti-falling auxiliary device; the inching switch 104 in this embodiment is located in the left foot stepping area, so as to avoid inconvenience of stepping on the button with the foot due to the foot brake arranged at the right foot.

The inching switch 105 is positioned on a display panel of the locomotive, a user can start the anti-falling auxiliary device by manually controlling the inching switch 105, the inching switch 105 and the inching switch 104 are connected in parallel, and the anti-falling auxiliary device can be started by closing the inching switch 105 and the inching switch 104.

The indicator light 106 is located in the display panel of the vehicle head and used for indicating whether the anti-falling auxiliary system is started or not, so that a user can directly observe the anti-falling auxiliary system conveniently. The indicator light 106, the jog switch 104 and the jog switch 105 constitute a start indication module of the circuit.

The middle support drop indicator lamp 107 is used for displaying the operating state of the pusher motor, and is connected in parallel with the pusher motor 87 a.

The tail lights 108 and 109 are also connected in parallel with the pusher motor 87a, and when the brake lever 88 is pressed, the tail lights 108 and 109 are lighted up to play a role of reminding the rear deceleration.

In conjunction with the circuit diagram of fig. 5, the operation flow is as follows:

the initial state is as follows: and turning on the inching

switch

104 or 105 to turn on the circuit access power supply of the anti-falling auxiliary device.

And (4) in a deceleration state: the brake handle 88 is half-gripped to drive the bent plate 88k to rotate, at this time, the bent plate 88k simultaneously touches the first-order starting switch 88e and the protection switch 88f, the first-order starting switch 88e becomes a closed state, the protection switch 88f becomes an open state, the indicator lamp 106, the indicator lamp 107, the tail lamp 108, the tail lamp 109 and the push rod motor 87a are all connected with the power supply, the push rod 87h extends forwards, the push rod 87h is not contacted with the reversal termination switch 87b any more, the switch 87b becomes a closed state, the push rod 87h pushes the pull rod 87g to swing forwards, the pull wire 75 is driven to pull and rotate the chain wheel 82a, the middle support 8 swings downwards, and the support wheel 84 slowly moves towards the ground as shown in fig. 3.

Deceleration state 2: the pusher 87h continues to move forward and touches the first-order stop switch 87d, the first-order stop switch 87d becomes an open state, the indicator lamp 107, the tail lamp 108, the tail lamp 109, and the pusher motor 87a are disconnected from the power source, and only the indicator lamp 106 is still on.

A reduction stop state: the brake handle 88 is completely held to the bottom, so that the push plate 88s on the bent plate 88k contacts the second-order starting switch 88g, the second-order starting switch 88g is changed into a closed state, the indicator light 107, the tail light 108, the tail light 109 and the push rod motor 87a are communicated with the power supply again, the push rod 87h continues to be pushed forwards to the maximum value of the extending amount, the push rod 87h pushes the pull rod 87g, the pull wire 75, the chain wheel 82a and the support frame 82 to completely move the support wheel 84 to contact the ground, and at the moment, the support wheel 84 can play a role of preventing falling, as shown in fig. 4.

The brake lever is released: the brake lever 88 is released from the deceleration state (i), the deceleration state (ii) or the deceleration stop state (ii), the first-order start switch 88e returns to the open state, the protection switch 88f returns to the closed state, the indicator light 107, the tail light 108, the tail light 109 and the pusher motor 87a are all disconnected from the power source, and the support wheel 84 is stationary.

Twisting the rotating handle: through twisting the rotating handle, the reversing switch 88H is in a closed state, the coil in the electromagnetic relay 102 is electrified, the magnetic switches G1 and G2 are changed into a closed state by the magnetic force of the coil, the magnetic switch H is changed into an open state, the power supply is reversely connected with the positive electrode and the negative electrode of the push rod motor 87a, the reverse movement of the push rod motor 87a is realized, the push rod 87H is retracted inwards, and the supporting wheel 82 is retracted.

When the push rod 87H is completely retracted into the push rod motor 87a, the push rod 87H touches the reverse rotation terminating switch 87b, the reverse rotation terminating switch 87b becomes an open circuit state, the coil is disconnected from the power supply 103, the relay 102 does not operate, the switches G1 and G2 inside the relay become an open circuit state, the switch H becomes a closed state, and the circuit returns to an initial state.

In the deceleration state I, the deceleration state II and the deceleration stop state, the protection switch 88f in the coil protection module is always in the open circuit state, even if a user twists the rotating handle to start the reversing switch 88h, the coil cannot be communicated with the power supply 103, the power supply cannot supply power to the coil, and the contradiction is effectively avoided when riding (namely, the bicycle is accelerated while being braked and decelerated).

Note: in fig. 5, the following switches are normally open switches: (normally open switch: normally open state, switch closed when triggered.)

Jog switch 104, jog switch 105, first order start switch 88e, reverse switch 88h, second order start switch 88G, magnetic switch G1, and magnetic switch G2.

In fig. 5, the following switches are normally closed switches: (normally closed switch: normally closed state, and switch open state when triggered)

A protection switch 88f, a first-order stop switch 87d, a reverse-rotation stop switch 87b, and a magnetic switch H.

The auxiliary device in the embodiment can realize that the driving device controls the supporting wheels to move downwards and support the ground by controlling the operating arm when a driver does not leave the foot stepping area of the vehicle with both feet, and the two supporting wheels are grounded to assist in stabilizing the vehicle, so that the driver can avoid worrying that both feet are drenched and rolled.

The auxiliary device in this implementation is controlled through power cooperation mechanical parts, need not that the user uses too big power to go frequent carrying and draw the supporting wheel, consequently uses more easily conveniently, can not have tired or use discomfort.

The push rod motor thrust in this embodiment is bigger than the rotating electrical machines torsional force, and it is easier that drive support piece rotates, and difficult emergence is damaged.

The above description of the preferred embodiments of the present invention is provided to enable those skilled in the art to make various changes and modifications without departing from the spirit of the present invention, and these changes and modifications should be construed as being included in the scope of the present invention.

Claims

1. The utility model provides an anti-falling auxiliary device of electric motor car with push rod motor drive which characterized in that: comprises a power supply, a speed reducer, a control mechanism, a driving device and a supporting wheel (84) which is contacted with the ground and can prevent the electric vehicle from falling sideways; the speed reducer comprises an operating arm for on-hand or foot control; the control mechanism comprises a first-order starting switch (88e) and a second-order starting switch (88g) which are used for starting the driving device, the first-order starting switch (88e) and the second-order starting switch (88g) are both connected with the operating arm, and the control mechanism further comprises a first-order interruption switch (87d) which is used for stopping the movement of the supporting wheel (84) when the supporting wheel (84) moves and is close to the ground; the first-order starting switch (88e), the second-order starting switch (88g) and the first-order interruption switch (87d) are connected with a driving device; the driving device comprises a push rod motor (87a), a connecting piece and a bracket (8); the support (8) comprises a support rod (82) with one end hinged with the vehicle body and a reset piece for resetting the support (8), and the support wheel (84) is pivoted at the other end of the support rod (82); the push rod motor (87a) comprises a push rod (87 h); the connecting piece comprises a swing rod (87g) and a traction wire (75) for pulling and rotating the supporting rod (82); one end of the swing rod is hinged to the vehicle body, the other end of the swing rod (87g) is hinged to the push rod (87h), one end of the pull wire (75) is connected with the support rod (82), and the other end of the pull wire (75) is connected to the swing rod (87 g); when the operating arm is controlled to decelerate, firstly, the first-order starting switch (88e) is closed to enable the driving device to work, and the driving device enables the supporting wheel (84) to move and approach the ground; when the supporting wheel (84) is close to the ground, the supporting wheel (84) directly or indirectly triggers a first-order interruption switch (87d), the first-order interruption switch (87d) stops the driving device from running, and the supporting wheel (84) stops moving; when the user further controls the operating arm to stop, the operating arm touches the second-order starting switch (88g), the second-order starting switch (88g) enables the driving device to operate again, and the supporting wheel (84) operates to the maximum moving value and contacts the ground; when a user controls the reset piece, the driving device works and enables the supporting wheel (84) to be reset to the original position, and the supporting wheel (84) is far away from the ground; a chain wheel (82a) is arranged at the hinged end of the supporting rod (82), a chain (75e) is arranged at one end, connected with the supporting rod (82), of the traction line (75), and the chain (75e) is connected with the chain wheel (82 a); the connecting piece is equipped with movable sleeve (87f) with the junction of pendulum rod (87g), outside pendulum rod (87g) was located in movable sleeve (87f) cover, be equipped with the fastener that is used for fixed sleeve and pendulum rod (87g) on the sleeve.

2. The anti-falling auxiliary device of the electric vehicle driven by the push rod motor as claimed in claim 1, wherein: and an elastic piece (75f) for buffering rigid pulling force is arranged in the middle of the traction wire (75).

3. The anti-falling auxiliary device of the electric vehicle driven by the push rod motor as claimed in claim 1, wherein: the reversing mechanism is characterized by further comprising a rotating handle, the resetting piece comprises a reversing mechanism and a reversing switch (88h), the reversing mechanism is used for controlling the driving device to be electrified and to move in the reverse direction, the reversing switch (88h) is used for controlling the reversing mechanism to be started, and the rotating handle is connected with the reversing switch (88 h).

4. The fall prevention auxiliary device for the electric vehicle driven by the push rod motor as claimed in claim 3, wherein: the reversing mechanism is an electromagnetic relay (102), the electromagnetic relay (102) comprises a coil and a plurality of magnetic switches, and the reversing switch (88h) is used for controlling the coil to be powered on and powered off; when the reverse switch (88h) is in an open circuit state, the coil is not electrified, the magnetic switch enables the push rod motor (87a) to be positively connected with the power supply, the push rod motor (87a) moves positively, the push rod (87h) pulls the connecting piece to enable the bracket (8) to rotate positively, and the supporting wheel (84) approaches to the ground; when the rotating handle is rotated, the rotating handle triggers the reversing switch (88h), the coil is electrified, the magnetic switch enables the push rod motor (87a) to be reversely connected with the power supply, the push rod motor (87a) moves reversely, the push rod (87h) moves reversely, the support (8) restores to the original position under the action of the resetting piece, and the supporting wheel (84) is far away from the ground.

5. The fall prevention auxiliary device for the electric vehicle driven by the push rod motor as claimed in claim 4, wherein: the coil protection device further comprises a coil protection module, wherein the coil protection module comprises a protection switch (88f), and the protection switch (88f) is triggered simultaneously with a first-order starting switch (88e) or a second-order starting switch (88 g); when the first-order start switch (88e) or the second-order start switch (88g) is in an activated state, the protection switch (88f) disconnects the reverse switch (88h) from the coil.

6. The fall prevention auxiliary device for the electric vehicle driven by the push rod motor as claimed in claim 4, wherein: the control mechanism further comprises a reverse rotation termination switch (87b) for stopping the operation of the reverse rotation mechanism when the support wheel is completely reset; when the supporting wheel returns to the initial position, the reversal termination switch (87b) triggers and stops the power supply of the coil in the reversal mechanism, so that the electromagnetic relay (102) is restored, the push rod motor (87a) is positively connected with the power supply again, and the operating arm can be reused.

7. The anti-falling auxiliary device of the electric vehicle driven by the push rod motor as claimed in claim 1, wherein: the operating arm is a brake lever.

8. The anti-falling auxiliary device of the electric vehicle driven by the push rod motor as claimed in claim 1, wherein: the middle support is used for supporting and erecting the battery car, and the support (8) is the middle support.