CN205489932U - Terminal box with structure is drawn forth to motor triple line portable - Google Patents

Abstract

The utility model discloses a junction box with a convenient lead-out structure for three-phase wires of a motor. A copper-made and three-dimensional rectangular terminal is placed in a wiring channel; a screw hole is respectively provided on three end faces of the terminal for screwing in a bolt to fix the terminal lug, and one of the screw holes is connected to the motor The copper wires of the stator coil are electrically connected; the upper end surface of the ceramic base is penetrated with three channels respectively connected with the three sets of wiring channels, and at least one through hole is correspondingly provided on the housing, and the electrical connection wires of the terminals of the lead wires are The column is led out of the shell through the channel and the through hole. The internal wiring structure of the technical solution is simple, the process operation is easy to realize, and the volume of the junction box is small, which can ensure the safe and stable operation of the motor.

Description

A junction box with a convenient lead-out structure for motor three-phase lines

technical field

The utility model relates to the technical field of a three-phase line lead-out structure of a driving motor, in particular to a junction box with a convenient three-phase line lead-out structure of a motor.

Background technique

As the core power source of electric vehicles, the drive motor should meet the requirements of various complex and harsh road conditions such as water wading, mud wading, high temperature, and extreme cold. Therefore, in the design of the motor, problems such as sealing and insulation are more prominent. Among them, the three-phase line is used as a transmission channel for high-voltage electricity, and the safety and reliability of the connection with the motor is more important.

In the conventional design method, there is mainly the method of directly leading from the inside to the outside with the help of sealing fasteners in a certain area of the motor end cover or casing. Although this method is simple, it is necessary to connect the three-phase line and the stator during the motor assembly If the coil is connected, if it is not handled properly, the resistance at the interface will be large, and the motor will generate heat during operation, which will increase the safety hazard. In addition, once the wire length is fixed, it is not easy to change; in addition, a junction box is used However, the general junction box design is large, the internal wiring is not easy to operate, and it can only be used for a fixed model. When changing to a different model, the direction of the outlet needs to be changed, which increases the development costs of R&D and molds.

Therefore, under the premise of ensuring the safe and stable operation of the motor, a junction box with a simple internal wiring structure and easy process operation is required to deal with the above problems.

Utility model content

Aiming at the above-mentioned problems in the prior art, a junction box aiming at realizing the three-phase lead-out structure of the motor, a simple wiring structure, a simple process, and convenient operation is provided to overcome the above-mentioned technical defects.

The specific technical scheme is as follows:

A junction box with a convenient lead-out structure for three-phase wires of a motor, comprising a housing connected to a motor end cover, a ceramic base is placed in the housing, and the ceramic base is fixedly mounted on the motor end cover , three sets of wiring channels are opened in the ceramic base, and a copper-made and three-dimensional rectangular terminal is arranged in each of the wiring channels;

One of the three end faces of the terminal post is provided with a screw hole inward, which is used to screw into the terminal lug of the bolt-fixed terminal, and one of the screw holes is electrically connected to the copper wire of the motor stator coil;

The upper end surface of the ceramic base is penetrated with three passages respectively connected with the three groups of the wiring channels, and at least one through hole is correspondingly provided on the housing, and the terminal of the lead wire is electrically connected to the terminal And lead out of the housing through the channel and the through hole.

The lower end of the connecting post is composed of cylindrical and hexagonal columns stacked and distributed, forming an alternate stacked step structure.

The terminal has a cubic structure, and the screw hole is centered on the two opposite end surfaces and the upper surface of the terminal located in the connection channel.

Preferably, the three terminals are arranged in a staggered arrangement.

Preferably, an O-ring sealing groove is formed on the surface of the housing in contact with the motor end cover, and a sealing ring is arranged in the O-ring sealing groove.

Preferably, the number of the through holes is three, and each of the through holes is opposite to one of the channels.

Preferably, the housing is a one-piece structure and made of aluminum.

Preferably, a plurality of threaded through-holes are provided on the contact surface of the ceramic base and the motor end cover, and a bolt is pierced in each of the threaded through-holes for fixed connection between the ceramic base and the motor end cover. The motor end cover.

The beneficial effects of the above-mentioned technical scheme are:

(1) The junction box is equipped with a ceramic base, a junction channel, and a junction post structure, so that the internal junction structure is simple, the process operation is easy to realize, and the outgoing direction of the three-phase line can be changed according to the space of different assembly arrangements, At the same time, the junction box is small in size, which can ensure the safe and stable operation of the motor;

(2) The entire junction box housing is made of aluminum, which reduces the overall quality, and adopts an integrated structure, which reduces the risk of water entering the part;

(3) The ceramic base is fixed on the end cover, which can play the role of connecting the end cover and the cube terminal and insulating;

(4) The alternately stacked steps at the lower end of the cubic terminal increase the firmness of the terminal. Its hexagonal structure is complemented by ceramic insulating walls on both sides to prevent the rotation of the cubic terminal and prevent loosening when installing cables;

(5) The staggered structure of the three terminal posts facilitates the connection of a certain phase line inside the motor with the terminal post in the middle, avoiding cable interference inside the motor and reducing the difficulty of process assembly.

Description of drawings

Fig. 1 is the bottom surface view of the junction box of the utility model having the convenient type lead-out structure of the three-phase line of the motor;

Fig. 2 is the internal sectional view of the junction box of the utility model with a convenient three-phase lead-out structure for motors;

Fig. 3 is an internal cross-sectional view from another angle of view of the junction box with the convenient three-phase wire lead-out structure of the utility model;

Fig. 4 is a schematic diagram of connection posts and wire ends of a junction box with a convenient three-phase wire lead-out structure of the utility model.

detailed description

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiments, parts of the same configuration are given the same reference numerals and descriptions are omitted.

Referring to Fig. 1, it is a bottom view of a junction box with a convenient three-phase lead-out structure for a motor according to the present invention; in conjunction with Fig. 2, it is an internal sectional view of a junction box with a convenient three-phase lead-out structure for a motor according to the present invention; and Fig. 3 is an internal cross-sectional view of another angle of view of the junction box with a convenient three-phase wire lead-out structure of the utility model; and Fig. 4 is a terminal post of the junction box with a convenient three-phase wire lead-out structure of the utility model and wiring diagram. The junction box is installed on the end cover of the motor and used to lead out the three-phase wires of the motor.

As shown in the figure, the junction box includes a housing 1 connected to the motor end cover (not shown in the figure), a ceramic base 2 is placed in the housing 1, and the ceramic base 2 is fixedly installed on the motor end cover , the ceramic base 2 is provided with three sets of wiring channels 21, and each wiring channel 21 is respectively equipped with a copper-made and three-dimensional rectangular terminal 3;

One of the three end faces of the terminal 3 is provided with a screw hole 33 inwardly, which is used to screw in the terminal lug of the bolt to fix the electrical connection terminal, and one of the screw holes 33 is connected to the copper wire 5 of the motor stator coil. The remaining two screw holes 33 determine the outlet direction of the three-phase lead wire 4 according to the actual loading needs to determine the end surface position where the screw hole 33 is located;

The upper end surface of the ceramic base 2 is also penetrated with three passages respectively connected with the three sets of wiring channels 21, and the housing 1 is correspondingly provided with at least one through hole, and the terminals of the lead wires 4 require electrical connection wires according to the direction of the wires. The other two screw holes 33 of the column 3 are led out of the casing 1 through the passage and the through hole. In this embodiment, the number of through holes is also three, and each through hole is opposite to one of the passages, so as to lead the lead wire 4 out of the housing 1; Each wiring channel 21 is equivalent to setting a ceramic wall for insulation, and the ceramic base 2 is fixedly installed on the end cover to play the role of connecting the end cover and the terminal 3 and insulating.

In a preferred embodiment, as specifically shown in FIG. 4 , the lower end of the terminal post 3 is composed of cylindrical and hexagonal columns stacked and distributed, forming a stacked and alternate stepped structure 31, and the stepped structure 31 increases the firmness of the terminal 3, and the hexagonal structure is supplemented by ceramic insulating walls on both sides to prevent the rotation of the terminal 3, which can effectively prevent the occurrence of loosening when installing cables.

As a further preferred embodiment, the terminal post 3 has a cubic structure, and because the lower end surface is provided with a stepped structure 31, and two opposite end surfaces are in contact with the ceramic insulating walls on both sides of the connection channel 21, so the The screw holes 33 are centrally arranged on the two opposite end surfaces and the upper end surface of the terminal 3 located in the connection channel 21 .

As a further preferred embodiment, as specifically shown in Figure 1 and Figure 3, the terminals of the three cubes are arranged in a staggered arrangement, that is, they are not located on the same straight line, which facilitates the connection between a certain phase line inside the motor and the middle position. The terminals are connected in 3 phases to avoid interference of cables inside the motor, thereby reducing the difficulty of process assembly.

In a preferred embodiment, as specifically shown in FIG. 1 , an O-ring seal groove 11 is provided on the surface of the housing 1 in contact with the motor end cover, and the O-ring seal groove 11 A sealing ring is provided to seal the connection surface to reduce the risk of water ingress.

As a further preferred embodiment, the housing 1 is of an integral structure and made of aluminum, thereby reducing the overall quality and reducing the risk of water entering this part. A plurality of threaded through holes (not shown in the figure) are opened on the surface of the ceramic base 2 in contact with the motor end cover, and a bolt is pierced in each threaded through hole for fixedly connecting the ceramic base 2 and the motor end cover , in this embodiment, a total of three threaded through holes.

Hereinafter, a specific implementation will be described. It should be pointed out that the structure, process, and material selection described in the following implementation are only used to illustrate the feasibility of the implementation, and are not intended to limit the protection scope of the present utility model.

The ceramic base 2 is formed by injection molding. In the injection molding stage, three cubic terminals 3 are fixed on the corresponding positions of the ceramic base 2. Three bolts pass through three threaded holes at the bottom to fix the ceramic base 2 on the surface of the motor end cover, and the winding leads The terminal is installed by cold pressing, and then filled with solder, and then arranged in the corresponding position after staggering the position, leading out from the hole on the surface of the end cover, and fixed on the side of the terminal 3 by bolts. The whole shell adopts machining center or mold opening Casting processing technology, the lead-out hole of the three-phase line is processed on the top or side of the fully enclosed shell according to the wiring requirements of the whole vehicle, nested on the three-phase line in advance, and then the three-phase line is fixed on the top or side of the terminal 3, Then use bolts to fix the shell and the surface of the end cover, and finally tighten the waterproof joint.

In the above technical solution, the junction box is provided with a ceramic base 2, a junction channel 21, and a junction post 3, so that the inner junction structure is simple, the process operation is easy to realize, and the three parts can be changed according to the space of different assembly arrangements. The outgoing direction of the phase line and the small size of the junction box can ensure the safe and stable operation of the motor; the entire junction box shell 1 is made of aluminum, which reduces the overall quality, and adopts an integrated structure to reduce the risk of water entering the part. risk; the ceramic base 2 is fixed on the end cover, which can play the role of connecting the end cover and the cubic terminal 3 and insulating; the alternate steps at the lower end of the cubic terminal 3 increase the firmness of the terminal 3, and its hexagonal The structure is supplemented by ceramic insulating walls on both sides to prevent the rotation of the cubic terminal 3 and prevent the occurrence of looseness when installing cables; the structure of the three terminal 3 is staggered from each other, which is convenient for a certain phase line inside the motor to connect with the terminal 3 in the middle. It is connected with each other to avoid interference of the cables inside the motor and reduce the difficulty of process assembly.

The above descriptions are only preferred embodiments of the present utility model, and are only illustrative, not restrictive, of the present utility model. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the utility model, but all will fall within the protection scope of the utility model.

Claims (8)

1. a rosette with motor triple line portable deriving structure, it is characterised in that include The housing being connected with electric motor end cap, is equipped with ceramic base, and described ceramic base in described housing It is fixedly mounted on described electric motor end cap, described ceramic base offers three groups of wiring channels, each Described wiring channels is mounted with the binding post of a copper and spatially rectangle respectively；

A screw is offered respectively inwards, in order to spin into spiral shell on wherein three end faces of described binding post The Wiring nose of bolt fixed terminals, and one of them described screw is mutually electric with the copper cash of coil of stator of motor Even；

The upper surface of described ceramic base is run through and is offered three and be connected with wiring channels described in three groups respectively Logical passage, and on described housing, it is correspondingly arranged at least one through hole, the terminals of lead-out wire are electrically connected Described binding post is also drawn outside described housing via described passage and through hole.

There is the rosette of motor triple line portable deriving structure the most as claimed in claim 1, its Being characterised by, the lower end of described binding post is made up of cylindrical and hexagon cylinder stacked distribution, is formed There is stacking ledge structure alternately.

There is the rosette of motor triple line portable deriving structure the most as claimed in claim 2, its Being characterised by, described binding post is cube structure, and described screw is centrally located in described binding post It is positioned at two relative end faces and the upper surface of described wiring channels.

4. the rosette with motor triple line portable deriving structure as described in claim 1 or 3, It is characterized in that, three staggered settings of described binding post.

There is the rosette of motor triple line portable deriving structure the most as claimed in claim 4, its It is characterised by, the surface that described housing contacts with described electric motor end cap offers O and seals recessed It is provided with sealing ring in groove, and described O sealed groove.

There is the rosette of motor triple line portable deriving structure the most as claimed in claim 4, its Being characterised by, the quantity of described through hole is three, and each described through hole respectively with one of them institute State passage relative.

There is the rosette of motor triple line portable deriving structure the most as claimed in claim 1, its Being characterised by, described housing is integral type structure, and uses aluminium to make.

There is the rosette of motor triple line portable deriving structure the most as claimed in claim 5, its It is characterised by, the face that described ceramic base contacts with described electric motor end cap offers multiple screw thread and leads to Be equipped with a bolt in hole, and each described tapped through hole, in order to the described ceramic base of fixing connection with Described electric motor end cap.