CN216980973U - Connector and motor using same - Google Patents

Abstract

The utility model relates to a connector and a motor using the same, wherein the connector comprises a plug and a socket which are mutually matched, the plug comprises a plug body, the end part of the socket is provided with a groove, the groove is positioned on the inner wall of the socket, the periphery of the plug body is provided with an elastic buckle and a sealing gasket, the shapes of the sealing gasket and the compressed elastic buckle are matched with the shape of the groove, and the sealing gasket and the compressed elastic buckle can be clamped into the groove.

Description

Connector and motor using same

Technical Field

The utility model relates to the technical field of connectors, in particular to a connector and a motor using the same.

Background

As a novel energy-saving motor with high efficiency and high power density, the permanent magnet synchronous motor is widely applied in the fields of automobiles, robots, automatic production lines and the like. As the application field of the permanent magnet synchronous motor expands, the performance requirements thereof are gradually increased, and particularly, the sealing performance thereof is now a focus of attention of many users.

The common protection grade of the permanent magnet synchronous motor is IP65, and with the improvement of the use requirement of manufacturers and the improvement of the safety performance of the motor, the protection grade of a plurality of small-caliber motors which leave factories at present reaches IP 67. The improvement of the motor protection grade mainly relates to two parts of a motor body and a connector interface.

In the prior art, a plug of a motor connector is connected with a socket, a gasket is usually arranged at the bottom of the motor connector, and the gasket is extruded and compressed after the plug is plugged with the socket, so that the connector is sealed. However, when the motor vibrates significantly or the power cable is stretched with a strong force, the plug and the socket are pulled in a direction toward both sides, as shown by arrows in fig. 1, so that the compression amount of the gasket is reduced, resulting in a decrease in the reliability of the sealing of the connector.

The connection of the motor and the connector socket is usually realized by passing through the connector by a screw on the connector and locking the connector to a motor shell, placing a square sealing gasket between the socket and the shell to realize axial sealing (figure 2), and meanwhile, through a cable, one end of the cable is welded to a socket grounding pin, and the other end of the cable is locked to the shell by a screw, so that the grounding insulation of the connector and the motor is realized. Although the axial sealing mode of the motor and the socket is simple, the grounding process is complex, the grounding wire is thick, and the socket is difficult to press and lock.

SUMMERY OF THE UTILITY MODEL

To overcome the problems of the related art, the present invention provides a connector having better sealing performance, which can reduce material cost.

The utility model provides a connector, which comprises a plug and a socket which are mutually matched, wherein the plug comprises a plug body, and the connector is characterized in that a groove is arranged at the end part of the socket and is positioned on the inner wall of the socket, an elastic buckle and a sealing gasket are arranged on the periphery of the plug body, the shapes of the sealing gasket and the compressed elastic buckle are matched with the shape of the groove, and the sealing gasket and the compressed elastic buckle can be clamped into the groove.

According to one preferred scheme, the elastic buckle comprises a clamping block and an elastic piece, the elastic piece is fixed between the clamping block and the plug body, and after the elastic piece is compressed, the distance between the clamping block and the plug body is reduced.

Further, the elastic member is a spring.

Furthermore, the groove is a circular groove, and the clamping block comprises two arc-shaped blocks with the same radius.

Furthermore, the outer side wall of the plug body is provided with a first fixing column, the arc-shaped block is provided with a second fixing column, and two ends of the spring are respectively fixed to the first fixing column and the second fixing column.

According to one preferred scheme, the inner wall of the groove is provided with a semicircular convex ring, the semicircular convex ring is perpendicular to the groove bottom of the groove, and the semicircular convex ring is tightly attached to the outer groove wall of the groove.

According to one preferable scheme, the socket shell of the socket comprises a socket front part and a socket rear part, the socket front part is used for being in butt joint with the plug, the socket rear part is used for being connected with the motor, a radial groove is formed in the side wall of the socket rear part, and a sealing ring is placed in the radial groove.

Furthermore, the socket shell further comprises a connecting part, and the connecting part is used for connecting the front part of the socket and the rear part of the socket.

Furthermore, the connecting part is provided with at least two first screw holes.

The utility model provides a motor, which comprises a motor shell and the connector, wherein the motor shell is provided with a convex edge, and a socket shell of the connector is in direct contact with the convex edge to realize the grounding of a socket.

Preferably, the socket shell includes socket front portion, connecting portion and socket rear portion, connecting portion are used for connecting the socket front portion with the socket rear portion, connecting portion are equipped with two at least first screws, protruding edge be equipped with the second screw of first screw one-to-one will through screw first screw and second screw in proper order the socket shell connecting portion be fixed to motor housing protruding edge can realize the direct ground connection of socket.

The technical scheme provided by the utility model can have the following beneficial effects:

(1) the connector comprises a plug and a socket which are mutually matched, wherein the plug comprises a plug body, a groove is arranged at the end part of the socket and is positioned on the inner wall of the socket, an elastic buckle and a sealing gasket are arranged on the periphery of the plug body, the shapes of the sealing gasket and the compressed elastic buckle are matched with the shape of the groove, the sealing gasket and the compressed elastic buckle can be clamped into the groove, when the connector plug is matched with the socket, the elastic buckle is firstly pinched to compress the elastic buckle, then the elastic buckle and the sealing gasket are extruded into the groove of the connector socket together, and the elastic buckle can be compressed and rebounded, when the connector is subjected to two opposite tensile forces, the sealing gasket is pressed more tightly along with the increase of the stress, so that the sealing performance of the connector can be enhanced.

(2) In the connector, although the outer diameter of the elastic buckle after pinching is smaller than the installation inner diameter of the socket, the outer diameter of the sealing gasket of the plug is still larger, and in order to ensure that the sealing gasket is not damaged in the extrusion process, the front end of the socket is designed to be semicircular, namely, a semicircular convex ring is arranged on the inner wall of the groove and is vertical to the groove bottom of the groove, and the semicircular convex ring is tightly attached to the outer groove wall of the groove.

Meanwhile, due to the design, after the plug is connected with the socket, the stress area between the sealing gasket and the groove can be increased.

(3) The motor comprises a motor shell and the connector, wherein the motor shell is provided with a convex edge, the socket shell of the connector is directly contacted with the convex edge, and the grounding pin in the socket is connected with the socket shell, so that the motor is directly contacted with the socket shell to realize the grounding of the socket.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.

FIG. 1 is an exploded schematic view of a plug and receptacle of a prior art connector;

FIG. 2 is a perspective view of a prior art connector receptacle;

FIG. 3 is a prior art connector to motor connection;

FIG. 4 is an exploded view of a connector plug and receptacle according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an elastic buckle according to an embodiment of the present invention;

FIG. 6 is a schematic view of a connector plug mated with a receptacle according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the mating of the motor and the connector according to the embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a first perspective of a plug according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a second perspective of the plug according to the embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a first viewing angle of a socket according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a second viewing angle of the socket according to the embodiment of the present invention.

The figure includes:

the plug comprises a plug 1, a spring 11, an arc-shaped block 12, a sealing gasket 13, a socket 2, a circular groove 21, a socket front 22, a connecting part 23, a socket rear 24, a radial groove 241, a sealing ring 242, a semicircular convex ring 25, a motor shell 3, a convex edge 31 and a screw 4.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that, although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The common installation method of the connector and the motor is to lock the connector onto the motor housing 3 through a screw, place a square gasket between the connector socket 2 and the motor for sealing, then lock one end of a cable onto the housing through a grounding screw, weld one end onto a grounding pin of the socket 2, and realize the grounding insulation of the motor (fig. 3). Although the method is convenient to seal, the grounding insulation process is complicated and the number of parts for assembly is increased. Then, the connector plug 1 is butted with the socket 2, the connecting plug 1 is pressed onto the socket 2 through the matching of the groove and the protrusion, and at the moment, the O-shaped sealing ring 242 on the socket 2 and the circular sealing gasket on the plug 1 are squeezed, so that the connector is sealed (figure 1). This sealing method is when the motor receives long-term vibration or the cable of plug 1 end receives stronger pulling force, and the extrusion of O type sealing washer 242 and circular sealed pad is easily relaxed, leads to sealed reliability to reduce, and the connector is intake and is easily leaded to the power short circuit, burns out the motor even.

In order to solve the problems of connector sealing and motor grounding insulation, the utility model firstly designs an elastic buckle sealing structure of a connector plug 1, then changes an axial sealing mode of a connector socket 2, and finally simplifies the grounding insulation process of the motor.

The connector of the utility model, as shown in fig. 8 to 11, comprises a plug 1 and a socket 2 which are mutually matched, wherein the plug 1 comprises a plug body, a groove is arranged at the end part of the socket 2, the groove is positioned on the inner wall of the socket 2, an elastic buckle and a sealing gasket 13 are arranged on the periphery of the plug 1 body, the shapes of the sealing gasket 13 and the compressed elastic buckle are matched with the shape of the groove, and the sealing gasket 13 and the compressed elastic buckle can be clamped into the groove.

When connector plug 1 and socket 2 cooperate, pinch the elasticity buckle earlier and make elasticity buckle compressed, extrude into connector socket 2's recess together with elasticity buckle and seal gasket 13 again in, elasticity is detained the card and can be compressed and kick-backed.

The structure of the utility model firstly reduces the use of two sealing gaskets 13 to the use of only one sealing gasket 13, thus reducing the material cost, and secondly, when the plug 1 and the socket 2 are pulled and separated and are subjected to two opposite tensile forces, the sealing gasket 13 can be pressed more tightly along with the increase of the stress, thereby enhancing the sealing performance of the connector.

The specific structure of the connector of the present invention is further explained by the following detailed description in conjunction with the accompanying drawings.

The first embodiment.

The elastic buckle comprises a clamping block and an elastic piece, the elastic piece is fixed between the clamping block and the plug body 1, and after the elastic piece is compressed, the distance between the clamping block and the plug body is reduced.

Specifically, the elastic member is a spring 11, the groove is a circular groove 21, and the clamping block comprises two arc-shaped blocks 12 with the same radius.

The outer side wall of the plug body is provided with a first fixing column, the arc-shaped block 12 is provided with a second fixing column, and two ends of the spring 11 are in interference fit with the first fixing column and the second fixing column respectively.

Spring 11 has certain clearance under natural state between two circular arc piece 12 for spring 11 is compressed the back, and two circular arc piece 12 are close to the in-process of plug body, have certain activity space.

As shown in fig. 5, the elastic buckle composed of the spring 11 and the two arc-shaped blocks 12 has a simple structure, and after the elastic buckle is extruded into the groove of the socket 2, the spring 11 recovers the elastic force generated by the elastic force potential energy to enable the arc-shaped blocks 12 to better press the circular groove 21, so that the sealing performance between the plug 1 and the socket 2 is improved.

It should be noted that the spring 11 is only used as an example in the present embodiment, and the elastic member may be changed to another elastic member according to actual needs. In this embodiment, two arc-shaped blocks 12 are provided, and other numbers of arc-shaped blocks 12 may also be provided according to actual needs, and the number of the arc-shaped blocks 12 is not limited.

Example two.

Although the outer diameter of the pinched elastic buckle is smaller than the mounting inner diameter of the socket 2, the outer diameter of the sealing gasket 13 of the plug 1 is still larger, and in order to ensure that the sealing gasket 13 is not damaged in the extrusion process, the front end of the socket 2 is designed to be semicircular, as shown in fig. 4 and 6, namely, a semicircular convex ring 25 is arranged on the inner wall of the groove, the semicircular convex ring 25 is perpendicular to the groove bottom of the groove, and the semicircular convex ring 25 is tightly attached to the outer groove wall of the groove.

Meanwhile, by the design, after the plug 1 is connected with the socket 2, the stress area between the sealing gasket 13 and the groove can be increased.

Example three.

As shown in fig. 4 and 6, the socket housing of the socket 2 comprises a socket front 22 and a socket rear 24, the socket front 22 is used for being abutted with the plug 1, the socket rear 24 is used for being connected with a motor, the side wall of the socket rear 24 is provided with a radial groove 241, and a sealing ring 242 is placed in the radial groove 241.

In order to simplify the grounding insulation process of the motor, the axial sealing between the connector socket 2 and the motor is changed into radial sealing in the embodiment. The square gasket below the socket 2 is first removed and then a ring of grooves (i.e. radial grooves 241, as shown in fig. 4, 6 and 11) is designed below the socket 2 for the placement of a sealing ring 242 (O-ring 242), as shown in fig. 4, so that when the connector socket 2 is placed above the motor housing 3, the O-ring 242 is compressed by the compression of the housing against the sides of the socket 2 to form a radial seal of the socket 2 against the motor.

Example four.

As shown in fig. 7, the connection between the motor and the connector socket 2 is usually realized by passing a screw on the connector through the connector and locking it to the motor housing 3, placing a square gasket between the socket 2 and the housing to realize axial sealing (as shown in fig. 2), and simultaneously, by a cable, one end is welded to the grounding pin of the socket 2, and the other end is locked to the housing by a screw to realize grounding insulation between the connector and the motor. Although the axial sealing mode of the motor and the socket 2 is simple, the grounding process is complex, the grounding wire is thick, and the socket 2 is difficult to press and lock.

In order to solve the above problems, the socket shell is directly connected with the motor shell, the socket shell further comprises a connecting portion 23, the connecting portion 23 is used for connecting the socket front portion 22 and the socket rear portion 24, the connecting portion 23 is provided with at least two first screw holes, the embodiment is provided with four first screw holes, the four first screw holes are used for directly fixing the connecting portion 23 (namely, the socket shell) of the socket 2 on the motor shell 3 through screws 4, and since the internal grounding pin of the socket 2 is connected with the socket shell, the motor directly contacts the socket shell, namely, the grounding of the socket 2 is realized.

Example five.

As shown in fig. 7, this embodiment provides a motor, which includes a motor housing 3 and a connector of any one of the first to fourth embodiments, where the motor housing 3 is provided with a convex edge 31, and the socket housing of the connector directly contacts with the convex edge 31.

Specifically, the socket housing includes socket front portion 22, connecting portion 23 and socket rear portion 24, connecting portion 23 is used for connecting socket front portion 22 with socket rear portion 24, connecting portion 23 is equipped with four first screw holes, and four first screw holes are located four corners of connecting portion 23 respectively, protruding edge 31 be equipped with the second screw hole of first screw hole one-to-one, pass first screw hole and second screw hole in proper order through screw 4 with the socket housing connecting portion 23 is fixed to motor housing 3 protruding edge 31, because the inside earth pin of socket 2 itself links to each other with the socket housing, therefore this protruding edge 31 direct contact socket housing of motor housing 3 realizes the ground connection of socket 2 promptly.

The grounding mode of the socket 2 of the present embodiment is simpler and faster.

The motor of the embodiment is a permanent magnet synchronous motor.

The aspects of the utility model have been described in detail hereinabove with reference to the drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required by the utility model.

In addition, it can be understood that the modules in the device according to the embodiment of the present invention may be combined, divided, and deleted according to actual needs.

While embodiments of the present invention have been described above, the above description is illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The utility model provides a connector, is including the plug and the socket of mutually supporting, the plug includes the plug body, its characterized in that, the tip of socket is equipped with the recess, the recess is located the inner wall of socket, plug body periphery is equipped with elasticity buckle and seal gasket, seal gasket and the elasticity buckle after the compression both the shape all with the shape phase-match of recess, seal gasket and the elasticity buckle after the compression can the card go into the recess.

2. The connector of claim 1, wherein the elastic buckle comprises a clamping block and an elastic member, the elastic member is fixed between the clamping block and the plug body, and after the elastic member is compressed, the distance between the clamping block and the plug body is reduced.

3. The connector of claim 2, wherein the resilient member is a spring.

4. The connector of claim 3, wherein the groove is a circular groove, and the clamping block comprises two circular arc blocks with the same radius.

5. The connector according to claim 4, wherein a first fixing column is arranged on the outer side wall of the plug body, a second fixing column is arranged on the circular arc block, and two ends of the spring are fixed to the first fixing column and the second fixing column respectively.

6. The connector of claim 1, wherein the inner wall of the groove is provided with a semicircular bead perpendicular to the bottom of the groove, the semicircular bead abutting against the outer groove wall of the groove.

7. The connector of claim 1, wherein the receptacle housing of the receptacle comprises a receptacle front portion for mating with the plug and a receptacle rear portion for connection with a motor, the receptacle rear portion having a sidewall with a radial groove, the radial groove receiving the sealing ring.

8. The connector of claim 7, wherein the socket housing further comprises a connecting portion for connecting the front portion of the socket and the rear portion of the socket, the connecting portion having at least two first screw holes.

9. An electric machine comprising a motor housing and further comprising the connector of any one of claims 1 to 8, wherein the motor housing is provided with a ledge, and wherein the socket housing of the connector is in direct contact with the ledge to ground the socket.

10. The motor of claim 9, wherein said socket housing comprises a socket front portion, a connecting portion and a socket rear portion, said connecting portion is used for connecting said socket front portion and said socket rear portion, said connecting portion is provided with at least two first screw holes, said protruding edge is provided with second screw holes corresponding to said first screw holes one to one.

Images