CN216958767U

CN216958767U - Waterproof electric connector

Info

Publication number: CN216958767U
Application number: CN202122385407.9U
Authority: CN
Inventors: 王哲巧
Original assignee: Zhejiang Guangyuan Electric Co ltd
Current assignee: Zhejiang Guangyuan Electric Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-07-12
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a waterproof electric connector, which comprises a male connector end and a female connector end which are in plug-in fit, wherein a male terminal is arranged in the male connector end, and a female terminal is correspondingly arranged in the female connector end; a male end plug is arranged at one end of the male end of the connector, and a locking nut is movably sleeved on the male end of the connector; the female end plug bush is arranged at one end of the female end of the connector, a threaded portion is arranged on the outer wall of the female end plug bush, the male end plug is inserted into the female end plug bush and is locked in a matched mode of being in threaded connection with the threaded portion through a locking nut, and a sealing rubber ring is compressed at the joint of the male end plug and the female end plug bush. The male end of the connector and the female end of the connector are tightly pressed when the male end plug is in inserting fit with the female end plug bush, and are further locked by the locking nut, so that the waterproof property and the connection reliability of the electric connector are effectively guaranteed, and the electric connector has good practicability.

Description

Waterproof electric connector

Technical Field

The utility model relates to a waterproof electric connector, and belongs to the technical field of electric connector structural design.

Background

The electrical connector is an indispensable component in electronic equipment, and functions to connect two parts of circuits to allow current to flow, and thus has a wide range of applications. The electrical connector generally includes a male connector end and a female connector end, through which the circuit is conducted by plugging. The existing electric connector has the problems that the reliability of the connection between the male end of the connector and the female end of the connector is poor, and the male end of the connector and the female end of the connector are easy to separate when being pulled by external force, so that the circuit is abnormally broken; in addition, the problem of poor waterproof performance exists due to the fact that the two are not tightly connected.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to provide the electric connector with a reasonable structure, which not only improves the connection reliability of the male end and the female end of the connector, but also enhances the waterproof performance through the structure optimization design.

The technical scheme for realizing the purpose of the utility model is as follows:

a waterproof electric connector comprises a male connector end and a female connector end which are in plug-in fit, wherein a male terminal is arranged in the male connector end, and a female terminal is correspondingly arranged in the female connector end; a male end plug is arranged at one end of the male end of the connector, and a locking nut is movably sleeved on the male end of the connector; the connector is characterized in that a female end plug bush is arranged at one end of the female end of the connector, a threaded portion is arranged on the outer wall of the female end plug bush, a male end plug is inserted into the female end plug bush and is matched and locked with the threaded portion through a locking nut in a threaded manner, and a sealing rubber ring is compressed at the joint of the male end plug and the female end plug bush.

In the technical scheme, the lock nut is of a hollow tubular structure, an annular retaining ring is formed inside one end of the lock nut, an annular retaining platform is arranged on the inner side of the lock nut outside the male end of the connector, and when the lock nut is screwed with the threaded portion, the inner side of the annular retaining ring abuts against the annular retaining platform.

In the technical scheme, an annular caulking groove is formed in the annular abutting surface of the root of the male-end plug, the inner periphery of the sealing rubber ring is embedded in the annular caulking groove, and the sealing rubber ring is suitable for being pressed between the annular abutting surface and the end surface of the female-end plug bush.

In the technical scheme, the tail ends of the male terminal and the female terminal are provided with the wire connecting parts which extend backwards along the axial direction and are convex, the cross section of each wire connecting part is U-shaped, a wire placing groove is formed in the inner side of each wire connecting part, a groove communicated with the wire placing groove is formed in the root of each wire connecting part, and the notch of each groove faces the wire placing groove.

In the technical scheme, a misplug prevention structure is arranged between the female end of the connector and the male end of the connector.

In the above technical scheme, the mistake proofing insertion structure comprises a mistake proofing insertion groove formed in the male end plug and a mistake proofing insertion convex rib formed in the female end insertion sleeve, and when the male end of the connector and the female end of the connector form insertion fit, the mistake proofing insertion groove is in insertion fit with the mistake proofing insertion convex rib.

In the above technical scheme, the error-proofing slot is a T-shaped slot, and the error-proofing insertion rib is a matched T-shaped rib.

In the above technical scheme, the male terminal is provided with a male end plug pin extending into the male end plug, the female terminal is provided with a female end plug pin extending into the female end plug bush and adapted to be in plug fit with the male end plug pin, the male end plug pin is in the shape of a hollow circular tube provided with an axial slot, the female end plug pin is in the shape of a solid cylinder, and the outer diameter of the male end plug pin is not smaller than the inner diameter of the female end plug pin.

In the above technical solution, the tail of the male end of the connector is provided with a first separating rib plate for separating the wiring parts of the plurality of male terminals, and the tail end of the female end of the connector is provided with a second separating rib plate for separating the wiring parts of the plurality of female terminals.

In the technical scheme, the connector female end and the outer wall of the locking nut are provided with anti-skidding structures.

The utility model has the positive effects that: the waterproof electric connector is reasonable in structure, when the male end of the connector is connected with the female end of the connector, the male end plug and the female end plug bush are in plug-in fit, the joint of the male end plug and the female end plug bush is sealed by arranging the sealing rubber ring, the sealing rubber ring is further locked by the locking nut on the basis of once more, the sealing rubber ring is guaranteed to be effectively compressed, so that the waterproof performance is enhanced, the male end of the connector and the female end of the connector can be more reliably connected due to the locking connection effect of the locking nut, and the problem of circuit breaking caused by pulling of external force due to unreliable connection of the male end and the female end of the connector is avoided.

Drawings

Fig. 1 is a perspective view of a waterproof electrical connector according to the present invention;

fig. 2 is an exploded view of the waterproof type electrical connector shown in fig. 1;

FIG. 3 is a perspective view of the male end of the connector of the present invention;

FIG. 4 is a perspective view of the female end of the connector of the present invention;

figure 5 is a perspective view of the lock nut of the present invention;

FIG. 6 is a perspective view of a male terminal of the present invention;

fig. 7 is a perspective view of the female terminal of the present invention.

The reference symbols shown in the figures are: 1-male end of connector, 11-male end plug, 12-T-shaped groove, 13-annular blocking platform, 14-first separating rib plate, 15-annular blocking surface, 2-male terminal, 20-male end plug pin, 21-axial groove, 3-female end of connector, 31-threaded part, 32-female end socket, 33-misplug prevention rib, 34-second separating rib plate, 4-female terminal, 40-female end plug pin, 5-sealing rubber ring, 6-locking nut, 61-annular retainer ring, 62-fabrication hole, 7-wiring part, 71-wiring groove and 72-groove.

Detailed Description

The specific structure of the waterproof electric connector of the present invention is described below with reference to the drawings of the specification:

a waterproof electrical connector, as shown in fig. 1 to 7, which includes a male connector end 1 and a female connector end 3 that are in plug-in fit, wherein a male terminal 2 is installed in the male connector end 1, and a female terminal 4 is correspondingly installed in the female connector end 3; a male end plug 11 is arranged at one end of the male end 1 of the connector, and a locking nut 6 is movably sleeved on the male end 1 of the connector; a female end plug bush 32 is arranged at one end of the female end 3 of the connector, a threaded part 31 is arranged on the outer wall of the female end plug bush 32, the male end plug 11 is inserted into the female end plug bush 32 and is in threaded fit with the threaded part 31 through a lock nut 6 for locking, and a sealing rubber ring 5 is pressed at the joint part of the male end plug 11 and the female end plug bush 32; the waterproof electric connector in the embodiment has a reasonable structure, when the male end 1 of the connector is connected with the female end 3 of the connector, the male end plug 11 and the female end plug bush 32 are in opposite insertion fit, the joint of the male end plug 11 and the female end plug bush is sealed by arranging the sealing rubber ring 5 at the joint of the male end plug and the female end plug bush, and the sealing rubber ring 5 is further locked by the lock nut 6 on the basis of once more, so that the effective compression of the sealing rubber ring 5 is ensured, the waterproof performance is enhanced, the male end 1 of the connector and the female end 2 of the connector can be more reliably connected due to the locking connection effect of the lock nut 6, and the problem of circuit break caused by pulling by external force due to unreliable connection of the male end plug and the female end of the connector is avoided; the sealing rubber ring 5 in the embodiment can be a silica gel ring or a rubber ring. In this embodiment, the male terminal 2 and the female terminal 4 are both fixedly mounted by riveting.

As a further technical solution of this embodiment, the lock nut 6 is a hollow tubular structure, and an annular retaining ring 61 is formed inside one end, an annular stop 13 is provided outside the male connector end 1 inside the lock nut 6, and when the lock nut 6 is screwed with the threaded portion 31, the inner side of the annular retaining ring 61 abuts against the annular stop 13; the scheme of the embodiment further comprises an annular retainer ring 61 and an annular retainer table 13, which are matched with each other, so that the locking nut 6 and the male end 1 of the connector are effectively connected, and the locking nut 6 can be guaranteed to generate effective locking pressure on the male end 1 of the connector when being screwed up.

As a further technical solution of this embodiment, an annular caulking groove (not shown in the figure) is provided at the annular abutting surface 15 at the root of the male plug 11, the inner periphery of the sealing rubber ring 5 is embedded in the annular caulking groove, and the sealing rubber ring 5 is adapted to be compressed between the annular abutting surface 15 and the end surface of the female plug 32; the root of the male plug 11 is provided with the annular caulking groove, so that the sealing rubber ring 5 is mounted and limited, and the sealing rubber ring is prevented from falling off easily.

As an improved implementation manner in this embodiment, an anti-misplug structure is further provided between the female connector end 3 and the male connector end 1; the wrong insertion preventing structure can prevent the female end 3 of the connector from being inserted into the male end 1 of the connector in a wrong direction, and specifically prevents the wrong insertion of the male end plug 11 and the female end plug bush 32. Further, the mistake-proofing insertion structure comprises a mistake-proofing insertion slot 12 formed in the male end plug 11 and a mistake-proofing insertion convex rib 33 formed in the female end plug bush 32, when the male end 1 of the connector and the female end 3 of the connector form insertion fit, the mistake-proofing insertion slot 12 is in insertion fit with the mistake-proofing insertion convex rib 33, when the male end plug 11 is in insertion fit with the female end plug bush 32 in an inaccurate direction, the mistake-proofing insertion slot 12 cannot be opposite to the mistake-proofing insertion convex rib 33, so that insertion cannot be completed, and the purpose of mistake-proofing insertion is achieved; furthermore, in this embodiment, the error-proofing slot 12 is a T-shaped slot, the error-proofing rib 33 is a matched T-shaped rib, and the error-proofing slot 12 and the error-proofing rib 33 may be configured to have other shapes in actual operation; in practical operation, a chamfer may be provided at the end of the error-proof rib 33 to facilitate smooth insertion with the error-proof slot 12.

As a further technical solution of this embodiment, the ends of the male terminal 2 and the female terminal 4 are provided with a wire connecting portion 7 extending and protruding backward along the axial direction, the cross section of the wire connecting portion 7 is U-shaped, a wire placing groove 71 is formed inside the wire connecting portion, a groove 72 communicating with the wire placing groove 71 is formed at the root of the wire connecting portion, and a notch of the groove 72 is opened toward the wire placing groove 71; the embodiment further provides a structural design of the wire placing groove 71 and the groove 72 on the wiring part 7, when the wiring part 7 connects wires, the wire connector of the wires is placed in the wire placing groove 71, the tail end of the wire connector extends into the groove 72 and then is connected by spot welding, and the groove can be axially pressed by an external ejector rod during assembly production to press a male terminal and a female terminal.

As a further technical solution of this embodiment, as shown in fig. 6 and 7, the male terminal 2 has a male end plug pin 20 extending into the male end plug 11, the female terminal 4 has a female end plug pin 40 extending into the female end socket 32 and adapted to be plugged into the male end plug pin 20, the male end plug pin 20 is in a hollow circular tube shape with an axial slot 21, the female end plug pin 40 is in a solid cylinder shape, and an outer diameter of the male end plug pin 20 is not smaller than an inner diameter of the female end plug pin 40, when the male end plug is plugged into the female end socket 40, the female end plug pin 40 is inserted into the male end plug pin 20 and tightly contacts an inner peripheral surface of the male end plug pin 20 through an outer peripheral surface of the female end plug pin 40 to increase a contact surface, so as to improve an electrical conductivity, the male end plug pin 20 is divided into several parts by the axial slot 21 to increase a contraction elasticity of the male end plug pin 20, the outer diameter of the male end pin 20 is not less than (i.e. greater than or equal to) the inner diameter of the female end pin 40, so that the male end pin 20 and the female end pin 40 are more smoothly inserted and connected, and the electrical connection is enhanced; preferably, the end of the female terminal pin 40 may be a hemispherical structure, so that the insertion is smoother.

As a further technical solution of this embodiment, a first separating rib 14 for separating the wire connection portions 7 of the plurality of male terminals 2 is disposed at the tail of the male end 1 of the connector, a second separating rib 34 for separating the wire connection portions 7 of the plurality of female terminals 4 is disposed at the tail end of the female end 3 of the connector, the plurality of male terminals 2 are separated by the first separating rib 14, and the plurality of female terminals 4 are separated by the second separating rib 34, so that a creepage distance is increased, and insulation protection performance is enhanced; in this embodiment, the number of the female terminals 4 and the number of the male terminals 2 are four, and correspondingly, the first separating rib 14 and the second separating rib 34 are cross-shaped protruding structures, so as to separate the four female terminals 4 from the four male terminals 2.

As a further technical solution of this embodiment, as shown in the figure, the connector female end 3 and the outer wall of the lock nut 6 are provided with anti-slip structures; preventing the lock nut 6 and the connector female end 3 from slipping in the screwing process; the locking nut 6 is integrally formed by plastic in an injection mode, batch production is easy to achieve, and the locking nut 6 is far away from the process holes 62 are uniformly distributed in the end face of one end of the annular retainer ring 61 along the circumferential direction.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications as fall within the true spirit of the utility model are deemed to be covered by the present invention.

Claims

1. A waterproof electric connector comprises a male connector end (1) and a female connector end (3) which are in plug-in fit, wherein a male terminal (2) is arranged in the male connector end (1), and a female terminal (4) is correspondingly arranged in the female connector end (3); the connector is characterized in that a male end plug (11) is arranged at one end of the male end (1) of the connector, and a locking nut (6) is movably sleeved on the male end (1) of the connector; female end (3) one end of connector is equipped with female end plug bush (32), be equipped with screw thread portion (31) on female end plug bush (32) outer wall, public end plug (11) insert in female end plug bush (32) and through lock nut (6) with screw thread portion (31) spiro union cooperation locking public end plug (11) compress tightly sealed rubber ring (5) with the joint position of female end plug bush (32).

2. The waterproof electrical connector according to claim 1, wherein the lock nut (6) is a hollow tubular structure and is formed with an annular retaining ring (61) inside one end, the male connector end (1) is externally provided with an annular abutment (13) inside the lock nut (6), and the annular abutment (13) is pressed against the inside of the annular retaining ring (61) when the lock nut (6) is screwed with the threaded portion (31).

3. The waterproof electrical connector according to claim 2, characterized in that an annular groove is provided at the annular abutment surface (15) at the root of the male plug (11), the inner periphery of the sealing rubber ring (5) being embedded in said annular groove, the sealing rubber ring (5) being adapted to be compressed between the annular abutment surface (15) and the end surface of the female plug bush (32).

4. The waterproof electrical connector according to claim 1, wherein the male terminal (2) and the female terminal (4) are provided at their ends with wire connecting portions (7) extending axially rearward and protruding, the wire connecting portions (7) have a U-shaped cross section, a wire placing groove (71) is formed inside the wire connecting portions, a groove (72) communicating with the wire placing groove (71) is formed at the root of the wire connecting portions, and the groove (72) opens toward the wire placing groove (71).

5. The waterproof electrical connector according to claim 1, wherein a misplug prevention structure is arranged between the female connector end (3) and the male connector end (1).

6. The waterproof electrical connector according to claim 5, wherein the misplug prevention structure comprises a misplug prevention slot (12) formed in the male plug (11) and a misplug prevention rib (33) formed in the female plug bush (32), and when the male connector (1) and the female connector (3) are in a plugging fit, the misplug prevention slot (12) is in a plugging fit with the misplug prevention rib (33).

7. The waterproof electrical connector according to claim 6, wherein the error-proof slot (12) is a T-shaped slot and the error-proof rib (33) is a matching T-shaped rib.

8. The waterproof electrical connector according to any one of claims 1 to 7, wherein the male terminal (2) has a male end plug pin (20) extending into the male end plug (11), the female terminal (4) has a female end plug pin (40) extending into the female end plug sleeve (32) and adapted to be plugged into the male end plug pin (20), the male end plug pin (20) is in a hollow circular tube shape having an axial slot (21), the female end plug pin (40) is in a solid cylindrical shape, and an outer diameter of the male end plug pin (20) is not smaller than an inner diameter of the female end plug pin (40).

9. The waterproof electrical connector according to any one of claims 1 to 7, wherein the connector male end (1) is provided at a rear portion thereof with a first partition rib (14) for partitioning the wire connection portions (7) of the plurality of male terminals (2), and the connector female end (3) is provided at a distal end thereof with a second partition rib (34) for partitioning the wire connection portions (7) of the plurality of female terminals (4).

10. The waterproof electrical connector according to any one of claims 1 to 7, wherein the connector female end (3) and the outer wall of the lock nut (6) are provided with anti-slip structures.