阅读说明：本技术 一种防止电力过载损伤的电动自行车 (Electric bicycle capable of preventing electric power overload damage ) 是由 高丽丽 于 2021-07-13 设计创作，主要内容包括：本发明涉及电动自行车技术领域,且公开了一种防止电力过载损伤的电动自行车,包括固定轴,所述固定轴的外侧活动连接有转盘,所述转盘的内壁开设有滑槽,所述转盘的内壁且靠近滑槽的外侧开设有凹槽,所述转盘的内壁且靠近滑槽的内侧固定连接有滑动变阻器,所述转盘的内壁固定连接有电磁铁。该防止电力过载损伤的电动自行车,通过电活性聚合物的特性,在刺激的作用下,电活性聚合物体积会收缩,电触点与接触点的电性连接,实现了当电动自行车的电机无法驱动转轮的转动时,避免电机处于超负荷的工作状态,防止电机内部产生大量的热量,避免造成电机的损伤,提高了电机的使用寿命,提高降低了电动自行车的使用寿命。(The invention relates to the technical field of electric bicycles and discloses an electric bicycle capable of preventing electric power overload damage, which comprises a fixed shaft, wherein the outer side of the fixed shaft is movably connected with a turntable, the inner wall of the turntable is provided with a chute, the inner wall of the turntable and the outer side close to the chute are provided with a groove, the inner wall of the turntable and the inner side close to the chute are fixedly connected with a slide rheostat, and the inner wall of the turntable is fixedly connected with an electromagnet. This prevent electric bicycle of electric power overload damage, through the characteristic of electroactive polymer, under amazing effect, electroactive polymer volume can contract, the electric connection of electrical contact and contact point, when having realized the rotation of the unable drive runner of electric bicycle's motor, avoid the motor to be in overload's operating condition, prevent the inside a large amount of heats that produce of motor, avoid causing the damage of motor, the life of motor has been improved, the improvement has reduced electric bicycle's life.)

1. The utility model provides a prevent electric power overload damage's electric bicycle, includes fixed axle (1), its characterized in that: the outer side of the fixed shaft (1) is movably connected with a turntable (2), a sliding groove (3) is formed in the inner wall of the turntable (2), a groove (4) is formed in the inner wall of the turntable (2) and the outer side of the turntable, which is close to the sliding groove (3), a sliding rheostat (5) is fixedly connected to the inner side of the inner wall of the turntable (2) and the inner side of the turntable, which is close to the sliding groove (3), and an electromagnet (6) is fixedly connected to the inner wall of the turntable (2).

2. The electric bicycle for preventing electric power overload damage according to claim 1, wherein: the outer side of the inner wall of the turntable (2) close to the electromagnet (6) is fixedly connected with a magnetostrictive rod (7), and the outer side of the magnetostrictive rod (7) is fixedly connected with a contact ring (8).

3. The electric bicycle for preventing electric power overload damage according to claim 1, wherein: the sliding grooves (3) are symmetrically distributed on two sides of the contact ring (8), and the grooves (4) are symmetrically distributed on two sides of the sliding grooves (3).

4. The electric bicycle for preventing electric power overload damage according to claim 1, wherein: the inner wall elastic connection of spout (3) has spin (9), the outside fixedly connected with piston plate (10) of spin (9), the outside fixedly connected with link (11) of piston plate (10), the inboard fixedly connected with sheetmetal (12) of link (11).

5. The electric bicycle capable of preventing electric overload damage according to claim 4, wherein: the piston plate (10) is tightly attached to the inner wall of the sliding groove (3), the metal sheets (12) are symmetrically distributed on two sides of the sliding rheostat (5), and the metal sheets (12) are electrically connected with the sliding rheostat (5).

6. The electric bicycle for preventing electric power overload damage according to claim 1, wherein: the inner wall fixedly connected with leather bag (13) of recess (4), the outside fixedly connected with connecting block (18) of leather bag (13), the inner wall elastic connection of connecting block (18) has spacing pearl (17), the inner wall fixedly connected with contact point (16) of connecting block (18), the inner wall of recess (4) just is close to inboard fixedly connected with electrode post (14) of leather bag (13), the inner wall of carousel (2) just is close to outside fixedly connected with electric contact (15) of recess (4).

7. The electric bicycle capable of preventing electric overload damage according to claim 6, wherein: the inner side of the leather bag (13) is filled with electroactive polymers, the leather bag (13) is made of rubber, the rolling ball (9) is of a ball structure, and the electrode column (14) is electrically connected with the contact ring (8).

8. The electric bicycle capable of preventing electric overload damage according to claim 6, wherein: the number of the electric contacts (15) is the same as that of the contact points (16), the electric contacts (15) are symmetrically distributed on two sides of the groove (4), the electric contacts (15) are electrically connected with the electromagnet (6), and the contact points (16) are electrically connected with the metal sheet (12).

Technical Field

The invention relates to the technical field of electric bicycles, in particular to an electric bicycle capable of preventing electric power overload damage.

Background

An electric bicycle is a mechatronic personal transportation tool which takes a storage battery as auxiliary energy and is provided with a motor, a controller, the storage battery, a rotating handle brake handle and other operation components and a display instrument system on the basis of a common bicycle.

When the existing electric bicycle is used, because the running distance of the electric bicycle is influenced by bearing load, when the load born by the electric bicycle is large, the motor of the electric bicycle can not drive the rotating wheel to rotate, and the motor is in an overload working state at the moment, so that a large amount of heat is generated in the motor, the damage of the motor can be caused, the service life of the motor is shortened, and the service life of the electric bicycle is further prolonged.

Therefore, we propose an electric bicycle that prevents damage due to electric power overload to solve the above problems.

Disclosure of Invention

Technical scheme (I)

In order to achieve the purposes of avoiding the motor from being in an overload working state, preventing a large amount of heat from being generated in the motor, avoiding damage to the motor, prolonging the service life of the motor and prolonging the service life of the electric bicycle when the motor of the electric bicycle cannot drive the rotating wheel to rotate, the invention provides the following technical scheme: the utility model provides an prevent electric bicycle of electric power overload damage, includes the fixed axle, the outside swing joint of fixed axle has the carousel, the spout has been seted up to the inner wall of carousel, the inner wall of carousel just is close to the outside of spout and has seted up the recess, the inner wall of carousel just is close to the inboard fixedly connected with slide rheostat of spout, the inner wall fixedly connected with electro-magnet of carousel.

Preferably, the outer side of the inner wall of the turntable, which is close to the electromagnet, is fixedly connected with a magnetostrictive rod, and the outer side of the magnetostrictive rod is fixedly connected with a contact ring.

Preferably, the sliding grooves are symmetrically distributed on two sides of the contact ring, the grooves are symmetrically distributed on two sides of the sliding grooves, and the sliding grooves play a limiting role.

Preferably, the inner wall of the sliding groove is elastically connected with a rolling ball, the outer side of the rolling ball is fixedly connected with a piston plate, the outer side of the piston plate is fixedly connected with a connecting frame, and the inner side of the connecting frame is fixedly connected with a metal sheet.

Preferably, the piston plate is tightly attached to the inner wall of the sliding groove, the metal sheets are symmetrically distributed on two sides of the sliding rheostat and electrically connected with the sliding rheostat, and the piston plate plays a role in extrusion.

Preferably, the inner wall fixedly connected with leather bag of recess, the outside fixedly connected with connecting block of leather bag, the inner wall elastic connection of connecting block has spacing pearl, the inner wall fixedly connected with contact point of connecting block, the inner wall of recess and the inboard fixedly connected with electrode post that is close to the leather bag, the inner wall of carousel and the outside fixedly connected with electrical contact that is close to the recess.

Preferably, the inner side of the leather bag is filled with electroactive polymers, the leather bag is made of rubber, the rolling ball is of a spherical structure, the electrode column is electrically connected with the contact ring, and the leather bag plays a role in contraction.

Preferably, the number of the electric contacts is the same as that of the contact points, the electric contacts are symmetrically distributed on two sides of the groove, the electric contacts are electrically connected with the electromagnetic iron, the contact points are electrically connected with the metal sheet, and the electric contacts play a role in connecting a circuit.

(II) advantageous effects

Compared with the prior art, the invention provides an electric bicycle capable of preventing electric power overload damage, which has the following beneficial effects:

1. this prevent electric bicycle of electric power overload damage, through the characteristic of electroactive polymer, under amazing effect, electroactive polymer volume can contract, the electric connection of electrical contact and contact point, when having realized the rotation of the unable drive runner of electric bicycle's motor, avoid the motor to be in overload's operating condition, prevent the inside a large amount of heats that produce of motor, avoid causing the damage of motor, the life of motor has been improved, the improvement has reduced electric bicycle's life.

2. The electric bicycle capable of preventing electric power overload damage changes the resistance of the slide rheostat access circuit through the characteristics of the slide rheostat, when the resistance value of the slide rheostat access circuit is small, the circuit can pass current, and when the resistance of the slide rheostat access circuit is close to or infinite, no current passes through the circuit, so that the material recycling is realized, and the resource utilization rate is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged partial view of portion A of FIG. 1;

FIG. 3 is a schematic view of the housing structure of the present invention;

FIG. 4 is an enlarged partial view of the portion B in FIG. 3 according to the present invention.

In the figure: 1. a fixed shaft; 2. a turntable; 3. a chute; 4. a groove; 5. a slide rheostat; 6. an electromagnet; 7. a magnetostrictive rod; 8. a contact ring; 9. rolling a ball; 10. a piston plate; 11. a connecting frame; 12. A metal sheet; 13. a skin pocket; 14. an electrode column; 15. an electrical contact; 16. a contact point; 17. a limiting bead; 18. and (4) connecting the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an electric bicycle for preventing electric power overload damage includes a fixed shaft 1, a turntable 2 movably connected to an outer side of the fixed shaft 1, a magnetostrictive rod 7 fixedly connected to an inner wall of the turntable 2 and an outer side of the magnetostrictive rod 7 close to an electromagnet 6, a contact ring 8 fixedly connected to an outer side of the magnetostrictive rod 7, a sliding slot 3 formed in an inner wall of the turntable 2, a rolling ball 9 elastically connected to an inner wall of the sliding slot 3, a piston plate 10 fixedly connected to an outer side of the rolling ball 9, the piston plate 10 closely attached to an inner wall of the sliding slot 3, metal sheets 12 symmetrically distributed on two sides of the sliding rheostat 5, the metal sheets 12 electrically connected to the sliding rheostat 5, the piston plate 10 performing an extrusion function, a connecting frame 11 fixedly connected to an outer side of the piston plate 10, metal sheets 12 fixedly connected to an inner side of the connecting frame 11, the sliding slots 3 symmetrically distributed on two sides of the contact ring 8, and grooves 4 symmetrically distributed on two sides of the sliding slot 3, the sliding groove 3 plays a limiting role, the inner wall of the rotary table 2 and the outer side close to the sliding groove 3 are provided with a groove 4, the inner wall of the groove 4 is fixedly connected with a leather bag 13, the inner side of the leather bag 13 is filled with electroactive polymer, the leather bag 13 is made of rubber, the rolling ball 9 is of a spherical structure, the electrode column 14 is electrically connected with the contact ring 8, the leather bag 13 plays a shrinking role, the outer side of the leather bag 13 is fixedly connected with a connecting block 18, the inner wall of the connecting block 18 is elastically connected with a limiting ball 17, the inner wall of the connecting block 18 is fixedly connected with a contact point 16, the inner wall of the groove 4 and the inner side close to the leather bag 13 are fixedly connected with the electrode column 14, the inner wall of the rotary table 2 and the outer side close to the groove 4 are fixedly connected with electrical contacts 15, the number of the electrical contacts 15 is the same as that of the contact points 16, the electrical contacts 15 are symmetrically distributed on two sides of the groove 4, and the electrical contacts 15 are electrically connected with the electromagnet 6, the contact point 16 is electrically connected with the metal sheet 12, the electric contact point 15 plays a role of connecting a circuit, the slide rheostat 5 is fixedly connected to the inner side of the inner wall of the rotary disc 2 close to the sliding groove 3, and the electromagnet 6 is fixedly connected to the inner wall of the rotary disc 2.

The working principle is as follows: when the electric bicycle is used, the switch is screwed to enable the motor to be in a working state, when the electric bicycle normally works, the rotary disc 2 can rotate around the fixed shaft 1, at the moment, an electrode pole 14 electrically connected with the switch can pass through current, at the moment, the volume of an electroactive polymer on the inner side of the leather bag 13 can be reduced, the leather bag 13 on the inner side of the groove 4 can contract, and further the connecting block 18 is driven to move inwards, so that the electric contact 15 is electrically connected with the contact point 16, a circuit communicated with the metal sheet 12 and the electromagnet 6 is connected, the rolling ball 9 can rotate outwards along the sliding groove 3 under the action of centrifugal force, the connecting frame 11 is further pushed to move outwards, and further the metal sheet 12 can slide along the slide rheostat 5, so that the resistance value of the slide rheostat 5 in the circuit is increased, further no current passes through the circuit, the electromagnet 6 has no magnetism, and the motor normally works;

when the load borne by the electric bicycle is large, the motor cannot drive the roll shaft to rotate, at the moment, the turntable 2 is in a static state, and meanwhile, the electrode pole 14 electrically connected with the switch passes through current, at the moment, the volume of the electroactive polymer inside the leather bag 13 is reduced, the leather bag 13 inside the groove 4 contracts, and further the connecting block 18 is driven to move inwards, so that the electric contact 15 is electrically connected with the contact point 16, the circuit communicated with the metal sheet 12 and the electromagnet 6 is communicated, at the moment, the resistance value of the circuit connected with the slide rheostat 5 is small, the current in the circuit is large, at the moment, the electromagnet 6 has magnetism, and further the magnetostrictive rod 7 contracts, so that the contact rings 8 are separated, the motor is prevented from continuing to operate, and loss of the motor is prevented;

when the turntable 2 stops rotating, the rolling ball 9 can extrude the limiting ball 17 under the action of elastic force, and finally the original position is recovered;

the process is as shown in fig. 3, when the motor of the electric bicycle cannot drive the rotating wheel to rotate, the motor is prevented from being in an overload working state, a large amount of heat is prevented from being generated inside the motor, damage to the motor is avoided, the service life of the motor is prolonged, and the service life of the electric bicycle is prolonged and reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.