CN215009832U

CN215009832U - Motor with overload protection function for electric vehicle

Info

Publication number: CN215009832U
Application number: CN202121316742.7U
Authority: CN
Inventors: 王治民; 方文虎; 齐兆前; 占传杨
Original assignee: Bafang Tianjin Electric Technology Co ltd
Current assignee: Bafang Tianjin Electric Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-03
Anticipated expiration: 2031-06-11

Abstract

The utility model relates to the technical field of motors, in particular to a motor with overload protection function for an electric vehicle, which comprises a fixed rod and a left end cover, wherein the outer side of the fixed rod is provided with the left end cover, the right side of the left end cover is provided with a bearing, the right side of the bearing is provided with a wheel hub, the right side of the wheel hub is provided with a stator core, the right side of the stator core is provided with a right end cover, and the outer sides of the left end cover and the right end cover are both provided with an oil seal, the quick cooling after the motor overload disconnection circuit is realized, and the practicability of the device is increased.

Description

Motor with overload protection function for electric vehicle

Technical Field

The utility model relates to a motor technical field specifically is a motor that is used for electric motor car to have an overload protection function.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, is represented by a letter M in a circuit, mainly has the function of generating driving torque to serve as a power source of electrical appliances or various machines, is represented by a letter G in the circuit, mainly has the function of converting mechanical energy into electric energy, and is most commonly used at present to drive a rotor of the generator to generate electricity by utilizing heat energy, water energy and the like.

The electric motor car is through the thermal relay disconnection main circuit overload protection to the motor when transshipping, but the motor still is in the high temperature state that transships and produce, because the motor with external gas intercommunication, the motor cooling is slow to be in high temperature state for a long time and descends the life-span, the bolt of motor end cover department is not hard up easily in addition to lead to the fact the motor sealing performance relatively poor after droing, structural strength is relatively weak, and then the influence is by bike safety.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor that is used for electric motor car to have an overload protection function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a motor that is used for electric motor car to have overload protection function, includes dead lever and left end cover, the outside of dead lever is provided with the left end cover, the right side of left end cover is provided with the bearing, the right side of bearing is provided with wheel hub, wheel hub's right side is provided with stator core, stator core's right side is provided with the right-hand member lid, the outside of left end cover and right-hand member lid all is provided with the oil blanket, the inboard sliding connection of one end of left end cover and right-hand member lid has the ventilative board, the tip fixedly connected with fixture block of ventilative board, and fixture block and left end cover and right-hand member lid sliding connection, the one end inboard of left end cover and right-hand member lid is provided with the spout, the inboard of left end cover and right-hand member lid is provided with the connecting rod, the one end fixedly connected with button of connecting rod, button and ventilative board fixed connection.

Preferably, the inner sides of the left end cover and the right end cover are spirally connected with bolts, the outer sides of the bolts are provided with pressing plates, the outer sides of the bolts are provided with springs, and the two ends of each spring are fixedly connected with the pressing plates and the corresponding bolt respectively.

Preferably, the mounting portion of the bolt is a screw rod, and the section of the rod portion on the other side is rectangular.

Preferably, the inner side of the pressure plate is provided with a rectangular hole, and the size of the rectangular hole is the same as the cross section of the bolt rod part.

Preferably, bolts are uniformly arranged on the inner sides of the left end cover and the right end cover along an arc.

Preferably, the fixture block is slidably connected with the left end cover and the right end cover through the sliding grooves.

Preferably, the number of the corresponding buttons of the single ventilating plate is two, and the buttons are symmetrical up and down relative to the horizontal bisecting plane of the ventilating plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the main circuit can be disconnected through the thermal relay to carry out overload protection on the motor when the motor is overloaded through the arranged left end cover, the button, the air permeable plate, the fixture block and the chute, and simultaneously, the motor of the electric vehicle can be quickly radiated under the premise that the thermal relay is disconnected with the circuit to protect the motor, thereby avoiding the motor from being in a high temperature state for a long time due to the sealing state of the left end cover and the right end cover, reducing the service life of the motor, the air permeable plate is pressed, the button is reliably pressed inwards under the limit of the sliding connection of the fixture block, the left end cover and the right end cover, so that the button is bounced to stably push the air permeable plate outwards to withdraw from the left end cover and the right end cover, thereby communicating the outside with the inside of the motor to quickly radiate the inside of the motor, avoiding using a special tool to disassemble and open the left end cover and the right end cover to cool the motor, realizing the quick cooling after the motor is overloaded and disconnected with the circuit, increasing the practicality of the device.

2. The utility model discloses in, bolt through setting up, spring and clamp plate, can avoid the bolt not hard up to drop, through the rotating bolt during installation left end lid and right-hand member lid, thereby assemble left end lid and right-hand member lid and wheel hub with the convenient screw in wheel hub of left end lid and right-hand member lid screwed connection's bolt, the clamp plate rotates along with the rotation of bolt together simultaneously, along with the continuous screw in of bolt, the spring compresses gradually, after the bolt installation is accomplished, the spring is in convenient promotion clamp plate laminating left end lid and right-hand member lid of compression state and makes it near wheel hub, the bolt drops when avoiding the electric motor car to ride, realize the reliable installation of left end lid and right-hand member lid and bolt, increase the practicality of device.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a schematic structural diagram of the point B in fig. 1 according to the present invention.

In the figure: 1-fixed rod, 2-oil seal, 3-left end cover, 4-bearing, 5-stator core, 6-right end cover, 7-hub, 8-bolt, 9-spring, 10-pressing plate, 11-clamping block, 12-connecting rod, 13-button, 14-ventilating plate and 15-sliding groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a motor with an overload protection function for an electric vehicle comprises a fixed rod 1 and a left end cover 3, wherein the outer side of the fixed rod 1 is provided with the left end cover 3, the right side of the left end cover 3 is provided with a bearing 4, the right side of the bearing 4 is provided with a hub 7, the right side of the hub 7 is provided with a stator core 5, the right side of the stator core 5 is provided with a right end cover 6, the outer sides of the left end cover 3 and the right end cover 6 are respectively provided with an oil seal 2, the inner sides of one ends of the left end cover 3 and the right end cover 6 are slidably connected with a ventilating plate 14, the end part of the ventilating plate 14 is fixedly connected with a clamping block 11, the clamping block 11 is slidably connected with the left end cover 3 and the right end cover 6, the inner sides of one ends of the left end cover 3 and the right end cover 6 are provided with a sliding chute 15, the inner sides of the left end cover 3 and the right end cover 6 are provided with a connecting rod 12, one end of the connecting rod 12 is fixedly connected with a button 13, the button 13 is fixedly connected with the ventilating plate 14, the ventilating plate 14 in use, the motor is ensured to be communicated with the outside so as to reliably cool the interior of the motor, the bolt 8 guarantees the reliable installation of left end cover 3 and right-hand member lid 6, and the spring 9 promotes clamp plate 10 and compresses tightly left end cover 3 and right-hand member lid 6 and avoids bolt 8 not hard up to drop.

The inner sides of the left end cover 3 and the right end cover 6 are spirally connected with bolts 8, the outer sides of the bolts 8 are provided with pressure plates 10, the outer sides of the bolts 8 are provided with springs 9, two ends of each spring 9 are fixedly connected with the pressure plates 10 and the bolts 8 respectively, and the springs 9 fixedly connected with the bolts 8 are ensured to compress the pressure plates 10 in the use process so as to be attached to the left end cover 3 and the right end cover 6 to prevent the bolts 8 from falling off; the mounting part of the bolt 8 is a screw rod, the section of the rod part on the other side is rectangular, and the pressing plate 10 can reliably rotate along with the bolt 8 in the use process; the inner side of the pressing plate 10 is provided with a rectangular hole, the size of the rectangular hole is the same as the cross section of the rod part of the bolt 8, the bolt 8 is ensured to drive the pressing plate 10 to rotate together in the use process, and the spring 9 is prevented from being twisted and damaged; bolts 8 are uniformly arranged on the inner sides of the left end cover 3 and the right end cover 6 along the circular arc, so that the reliable assembly of the left end cover 3 and the right end cover 6 is ensured in the use process; the fixture block 11 is slidably connected with the left end cover 3 and the right end cover 6 through the sliding groove 15, and stable sliding of the fixture block 11 is guaranteed in the using process; the number of the buttons 13 corresponding to the single ventilation plate 14 is two, and the buttons are vertically symmetrical about the horizontal bisection plane of the ventilation plate 14, so that stable movement of the ventilation plate 14 is guaranteed in the using process.

The working process is as follows: the device of the utility model can protect the motor from overload by breaking the main circuit through the thermal relay when the motor is overloaded, and simultaneously can quickly dissipate heat of the motor of the electric vehicle under the premise of protecting the motor by breaking the circuit through the thermal relay, thereby avoiding the motor from being in a high-temperature state for a long time due to the sealing state of the left end cover 3 and the right end cover 6, reducing the service life of the motor, pressing the air permeable plate 14, pressing the button 13 inwards under the limit of the sliding connection of the fixture block 11, the left end cover 3 and the right end cover 6, so that the button 13 is bounced to push the air permeable plate 14 outwards to withdraw the left end cover 3, thereby communicating the outside with the inside of the motor to quickly dissipate heat of the inside of the motor, avoiding using a special tool to disassemble the bolt 8 to open the left end cover 3 and the right end cover 6 to cool the motor, avoiding the bolt 8 from loosening and falling off, and passing through the rotating bolt 8 when the left end cover 3 and the right end cover 6 are installed, thereby with left end housing 3 and the 6 screwed connection's of right-hand member end cover bolt 8 screw in wheel hub 7 to assembling left end housing 3 and right-hand member end cover 6 with wheel hub 7, simultaneously clamp plate 10 rotates along with bolt 8's rotation drive spring 9 and rotates together, along with bolt 8's continuous screw in, spring 9 compresses gradually, bolt 8 installs the completion back, spring 9 is in compression state and promotes clamp plate 10 laminating left end housing 3 and right-hand member end cover 6 and make it near wheel hub 7, bolt 8 drops when avoiding the electric motor car to ride.

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.

Claims

1. The utility model provides a motor that is used for electric motor car to have overload protection function, includes dead lever (1) and left end lid (3), its characterized in that: the outer side of the fixed rod (1) is provided with a left end cover (3), the right side of the left end cover (3) is provided with a bearing (4), the right side of the bearing (4) is provided with a hub (7), the right side of the hub (7) is provided with a stator core (5), the right side of the stator core (5) is provided with a right end cover (6), the outer sides of the left end cover (3) and the right end cover (6) are both provided with an oil seal (2), the inner sides of one ends of the left end cover (3) and the right end cover (6) are slidably connected with a ventilating plate (14), the end part of the ventilating plate (14) is fixedly connected with a clamping block (11), the clamping block (11) is slidably connected with the left end cover (3) and the right end cover (6), the inner sides of one ends of the left end cover (3) and the right end cover (6) are provided with a sliding chute (15), the inner sides of the left end cover (3) and the right end cover (6) are provided with a connecting rod (12), one end of the connecting rod (12) is fixedly connected with a button (13), and the button (13) is fixedly connected with the ventilation plate (14).

2. An electric motor with an overload protection function for an electric vehicle according to claim 1, characterized in that: the inner sides of the left end cover (3) and the right end cover (6) are spirally connected with bolts (8), pressing plates (10) are arranged on the outer sides of the bolts (8), springs (9) are arranged on the outer sides of the bolts (8), and the two ends of each spring (9) are fixedly connected with the pressing plates (10) and the bolts (8) respectively.

3. The motor with an overload protection function for an electric vehicle according to claim 2, wherein: the mounting part of the bolt (8) is a screw rod, and the section of the rod part on the other side is rectangular.

4. The motor with an overload protection function for an electric vehicle according to claim 2, wherein: the inner side of the pressing plate (10) is provided with a rectangular hole, and the size of the rectangular hole is the same as the cross section of the rod part of the bolt (8).

5. The motor with an overload protection function for an electric vehicle according to claim 2, wherein: and bolts (8) are uniformly arranged on the inner sides of the left end cover (3) and the right end cover (6) along the circular arc.

6. An electric motor with an overload protection function for an electric vehicle according to claim 1, characterized in that: the fixture block (11) is connected with the left end cover (3) and the right end cover (6) in a sliding mode through the sliding groove (15).

7. An electric motor with an overload protection function for an electric vehicle according to claim 1, characterized in that: the number of the buttons (13) corresponding to the single ventilation plate (14) is two, and the buttons are vertically symmetrical about a horizontal bisection plane of the ventilation plate (14).