CN212381049U

CN212381049U - Waterproof junction box structure of permanent magnet synchronous motor of full-electric forklift

Info

Publication number: CN212381049U
Application number: CN202021295640.7U
Authority: CN
Inventors: 华俊
Original assignee: Wuxi Hslt Electric Drive System Co ltd
Current assignee: Wuxi Hslt Electric Drive System Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-01-19
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a waterproof junction box structure of a permanent magnet synchronous motor of a full electric forklift, which comprises a bottom plate, a cover plate and wiring pins; the cover plate is covered and connected on the bottom plate, a closed accommodating cavity is formed between the cover plate and the bottom plate, one end of the wiring pin is fixed with the bottom plate, and the other end of the wiring pin extends out of the accommodating cavity; the bottom plate is provided with a threading groove communicated with the inside of the motor shell, and a wiring terminal of the motor extends into the accommodating cavity from the threading groove and is connected with the wiring pin. A waterproof terminal box structure of full electric fork truck PMSM, can wrap up the binding post of motor wherein, prevent that it from exposing outside the motor, bring the potential safety hazard.

Description

Waterproof junction box structure of permanent magnet synchronous motor of full-electric forklift

Technical Field

The utility model relates to a motor wiring structure especially relates to a waterproof terminal box structure of full electric fork truck PMSM.

Background

The motor is mainly used for generating driving torque and providing power source for electric appliances or other machines. An electric machine is one of the common tools for converting electric energy into mechanical energy, and therefore terminals for conducting electric energy are present in the electric machine. Some parts of the wiring terminals of the existing motor are exposed outside the motor, and the design not only can influence the service life of the wiring terminals, but also brings potential safety hazards.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a waterproof terminal box structure of full electric fork truck permanent magnet synchronous motor to improve motor binding post's seal structure.

The technical scheme is as follows: in order to achieve the purpose, the utility model discloses a waterproof junction box structure of a permanent magnet synchronous motor of a full-electric forklift, which comprises a bottom plate, a cover plate and wiring pins; the cover plate is covered and connected on the bottom plate, a closed accommodating cavity is formed between the cover plate and the bottom plate, one end of the wiring pin is fixed with the bottom plate, and the other end of the wiring pin extends out of the accommodating cavity; the bottom plate is provided with a threading groove communicated with the inside of the motor shell, and a wiring terminal of the motor extends into the accommodating cavity from the threading groove and is connected with the wiring pin.

Further, the wiring pin comprises a fixing bolt, a gasket and a nut; one end of the fixing bolt is fixed with the bottom plate, the other end of the fixing bolt extends out of the accommodating cavity, and the gasket and the nut are sequentially sleeved and connected on the fixing bolt; the wiring terminal is connected with the fixing bolt, and the upper surface and the lower surface of the wiring terminal are respectively abutted to the stepped surface and the gasket of the fixing bolt.

Furthermore, a plurality of hexagonal fixing grooves are formed in the bottom plate, and the large ends of the fixing bolts are connected into the fixing grooves.

Furthermore, the fixing bolt is provided with a circle of flange, and the lower surface of the wiring terminal is connected with the flange in a pressing mode.

Furthermore, the cover plate is provided with a plurality of connecting holes, and the small end of the fixing bolt penetrates out of the connecting holes and is connected with the nut.

Further, the gasket includes a first body and a second body; the second body is arranged above the first body, the first body is made of metal, and the second body is made of rubber; the upper surface of the wiring terminal is mutually abutted to the lower surface of the first body, and the lower surface of the nut is mutually abutted to the upper surface of the second body.

Has the advantages that: the utility model discloses a waterproof terminal box structure of full electric fork truck PMSM, apron and bottom plate formation inclosed holding chamber set up binding post in inclosed holding chamber, have avoided binding post to expose outside the motor, have effectively prevented binding post corrosion, have guaranteed binding post's life, have eliminated the potential safety hazard simultaneously.

Drawings

FIG. 1 is a schematic structural view of the connection between the present invention and a motor;

fig. 2 is a schematic structural view of the interior of the accommodating cavity of the present invention;

fig. 3 is a schematic structural view of the bottom plate of the present invention;

FIG. 4 is an exploded view of the terminal pin of the present invention;

fig. 5 is the structure diagram of the fixing bolt of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A waterproof junction box structure of a permanent magnet synchronous motor of a full-electric forklift comprises a bottom plate 1, a cover plate 2 and wiring pins 3. An opening is provided in the motor housing 4, to which the base plate 1 is fastened by means of a first connecting piece 15. The cover plate 2 is covered and connected on the bottom plate 1 and is fixed through a second connecting piece 16. An airtight holding cavity is formed between the cover plate 2 and the bottom plate 1, one end of the wiring pin 3 is fixed with the bottom plate 1, and the other end of the wiring pin penetrates through the cover plate 2 and extends out of the holding cavity. The utility model discloses a motor casing, including bottom plate 1, motor casing 4, wiring groove 5, wiring terminal 6, bottom plate 1 is last be provided with motor casing 4 inside communicating through wires groove 5, opening on wire groove 5 and the motor casing 4 is relative, the binding post 6 of motor extends in the holding chamber through opening, through wires groove 5 in proper order and is connected with connecting foot 3.

Specifically, the terminal pin 3 includes a fixing bolt 7, a spacer 8, and a nut 9. The bottom plate 1 is provided with a plurality of bulges at intervals, the bulges are in one-to-one correspondence with the wiring pins 3, and the bulges are provided with fixing grooves 10 with upward openings. The fixing groove 10 has a hexagonal shape, and a hexagonal large end of the fixing bolt 7 is coupled to the fixing groove, thereby restricting the rotation of the fixing bolt 7. The wiring terminal 6 is sleeved and connected on the fixing bolt. In order to increase the contact area between the fixing bolt 7 and the connecting terminal, the fixing bolt 7 is further provided with a flange 11 on the side close to the large end, and the lower surface of the connecting terminal 6 is pressed against the upper surface of the flange 11. The gasket 8 comprises a first body 13 and a second body 14, and the first body 13 and the second body 14 are both sleeved on the fixing bolt 7. The cover plate 2 is provided with a plurality of connecting holes 12, and the small end of the fixing bolt 7 penetrates out of the connecting holes 12 and is connected with the nut 9. In order to ensure the tightness of the accommodating cavity, the first body 13 is made of metal, the second body 14 is made of rubber, the second body 14 is arranged above the first body 13, the upper surface of the wiring terminal 6 is abutted to the lower surface of the first body 13, and the second body 14 penetrates through the connecting hole 12 and is abutted to the nut.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a waterproof terminal box structure of full electric fork truck PMSM which characterized in that: comprises a bottom plate (1), a cover plate (2) and wiring pins (3); the cover plate (2) is covered and connected on the bottom plate (1), a closed accommodating cavity is formed between the cover plate (2) and the bottom plate (1), one end of the wiring pin (3) is fixed with the bottom plate (1), and the other end of the wiring pin extends out of the accommodating cavity; the motor is characterized in that a threading groove (5) communicated with the inside of the motor shell (4) is formed in the bottom plate (1), and a wiring terminal (6) of the motor extends into the accommodating cavity from the threading groove (5) and is connected with the wiring pin (3).

2. The waterproof junction box structure of the permanent magnet synchronous motor of the all-electric forklift according to claim 1, characterized in that: the wiring pin (3) comprises a fixing bolt (7), a gasket (8) and a nut (9); one end of the fixing bolt (7) is fixed with the bottom plate (1), the other end of the fixing bolt (7) extends out of the accommodating cavity, and the gasket (8) and the nut (9) are sequentially sleeved and connected on the fixing bolt (7); the wiring terminal (6) is connected with the fixing bolt (7), and the upper surface and the lower surface of the wiring terminal are respectively abutted to the stepped surface of the fixing bolt (7) and the gasket (8).

3. The waterproof junction box structure of the permanent magnet synchronous motor of the all-electric forklift as claimed in claim 2, wherein: the bottom plate (1) is provided with a plurality of hexagonal fixing grooves (10), and the large end of each fixing bolt (7) is connected into each fixing groove (10).

4. The waterproof junction box structure of the permanent magnet synchronous motor of the all-electric forklift as claimed in claim 2, wherein: the fixing bolt (7) is provided with a circle of flange (11), and the lower surface of the wiring terminal (6) is connected with the flange (11) in a jacking mode.

5. The waterproof junction box structure of the permanent magnet synchronous motor of the all-electric forklift as claimed in claim 2, wherein: the cover plate (2) is provided with a plurality of connecting holes (12), and the small end of the fixing bolt (7) penetrates out of the connecting holes (12) and is connected with the nut (9).

6. The waterproof junction box structure of the permanent magnet synchronous motor of the all-electric forklift as claimed in claim 2, wherein: the gasket (8) comprises a first body (13) and a second body (14); the second body (14) is arranged above the first body (13), the first body (13) is made of metal, and the second body (14) is made of rubber; the upper surface of the wiring terminal (6) is mutually abutted against the lower surface of the first body (13), and the lower surface of the nut (9) is mutually abutted against the upper surface of the second body (14).