CN201146281Y

CN201146281Y - Improvement of connection device for water pump motor wire terminal

Info

Publication number: CN201146281Y
Application number: CNU2008200010605U
Authority: CN
Inventors: 卢东海
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-15
Filing date: 2008-01-15
Publication date: 2008-11-05
Anticipated expiration: 2018-01-15

Abstract

The utility model provides an improvement of a wire joint coupling device of a water pump motor, which comprises a socket arranged on the water pump motor and a plug matched with the socket; wherein, the plug is connected with and wrapped on the wire in a cable. The device is characterized in that the socket is arranged on the bottom end of an inverted-frustum-shaped concave hole which is provided with the water pump motor and the concave hole is partially provided with an inner thread; the plug is arranged in a plugged frustum-shaped coupling body which is compactly matched with the inverted-frustum-shaped concave hole; the rear end of the coupling body is sheathed with a screw nut with an external thread; the end surface of the screw nut supports the end surface of the frustum-shaped coupling body; the screw nut is arranged in an internal thread of the inverted-frustum-shaped concave hole by screw thread. The back of the frustum-shaped coupling body extends a solid insulation body section; the wire extending from the cable is cast in the insulation body section; the wire is connected with the plug after going through the insulation body section. The technical proposal greatly improves the waterproof performance of the connecting part of the wire joint of the water pump motor.

Description

The improvement of pump motor power lug coupling arrangement

Affiliated technical field

The utility model relates to a kind of architecture advances to pump motor, relates in particular to the improvement of the inside and outside power lug place structure of pump motor.

Background technology

The work under bad environment of pump motor will work than the deep water position, so its water-tight demand is higher than common electric machine.The outer electric wire plug of pump motor and the joint point of attachment of the receptacle accepts on the pump motor body are the weak links of waterproof.Existing pump motor power lug point of attachment is with behind the plug insertion socket, sentences nut in the two connecting port and compresses O-ring seals to reach sealing effectiveness.

The shortcoming that the structure of prior art exists is: the sealing ring sealing area is little, if electric wire is lifted or bumps and knocks pin and step on, the O-ring seals of connection place may deform and intake.Electric wire directly passes from cable with plug and links to each other, when pump motor enters into deep water, because hydraulic pressure is too big, steam can take place, and the space along electric wire and cable inner core penetrates into plug always and enters into motor internal by socket again and cause electrical machine insulation decline from the cable inner core, causes electric leakage, burning machine accident.

Summary of the invention

The utility model provides a kind of improvement of pump motor power lug coupling arrangement, and its purpose solves the shortcoming that prior art exists, and improves the water resistance of pump motor power lug connecting portion.

The technical scheme that its technical problem that solves the utility model adopts is:

The improvement of pump motor power lug coupling arrangement, comprise socket of being located on the pump motor and the plug that cooperates with socket, plug connects wraps up in the electric wire of being located in the cable, and it is characterized in that: socket is located at the bottom of the inversed taper platform shape shrinkage pool of offering on the pump motor, and shrinkage pool top is provided with internal thread; Plug is located at inversed taper platform shape shrinkage pool and is closely cooperated mutually in the taper type connected body that plugs, and the connected body rear end is arranged with and is provided with externally threaded nut, nut end face contact taper type connected body end face, and the nut spiral shell is located at the internal thread of inversed taper platform shape shrinkage pool.

Taper type connected body rear portion is extended with the solid insulator section, and the electric wire that stretches out from cable waters and casts from the insulator section, and electric wire passes insulator Duan Houyu plug and connects.

The usefulness of technique scheme is: with the conical surface seal that cooperatively interacts, sealing area is big and be difficult for looseningly, even electric wire is lifted or bumps and knocks pin and step on, cone seal also has enough deformation spaces, and water resistance improves greatly than prior art; Steam is when the space along electric wire and cable inner core penetrates into the solid insulator section always from the cable inner core, can be prevented from and can't continue infiltration, the generation of having stopped short circuit phenomenon.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model decomposing state schematic diagram;

Fig. 2 is the utility model assembled state schematic diagram.

Embodiment

As shown in Figure 1, the utility model is provided with the shrinkage pool 1 of an inversed taper platform shape on pump motor 10, and shrinkage pool 1 the first half is provided with internal thread 11, and shrinkage pool 1 bottom is provided with socket 100.Plug 200 is located in the taper type connected body 2 of being made by elastic insulating material (as rubber), taper type connected body 2 rear portions are extended with solid insulator section 21, solid insulator section 21 outer being arranged with are provided with externally threaded nut 3, nut 3 end face contact taper type connected bodies 2 end faces, the top of cable 4 casts in the solid insulator section 21, the electric wire 40 that stretches out from cable 4 also casts in the solid insulator 21, and electric wire 40 passes insulator section 21 backs and connects with plug 200.

As shown in Figure 2, nut 3 spiral shells are located at screw thread 11, are inserted in socket 100 up to plug 200, at this moment taper type connected body 2 is subjected to nut 3 contacts and its outer surface cooperates with inversed taper platform shape shrinkage pool 1 intimate and plugs and reach sealing effectiveness.

Claims

1, the improvement of pump motor power lug coupling arrangement, comprise socket of being located on the pump motor and the plug that cooperates with socket, plug connects wraps up in the electric wire of being located in the cable, it is characterized in that: socket is located at the bottom of the inversed taper platform shape shrinkage pool of offering on the pump motor, and shrinkage pool top is provided with internal thread; Plug is located at inversed taper platform shape shrinkage pool and is closely cooperated mutually in the taper type connected body that plugs, and the connected body rear end is arranged with and is provided with externally threaded nut, nut end face contact taper type connected body end face, and the nut spiral shell is located at the internal thread of inversed taper platform shape shrinkage pool.

2, the improvement of pump motor power lug coupling arrangement as claimed in claim 1, it is characterized in that: taper type connected body rear portion is extended with the solid insulator section, the electric wire that stretches out from cable waters and casts from the insulator section, and electric wire passes insulator Duan Houyu plug and connects.