CN117526020A

CN117526020A - Waterproof electric connector

Info

Publication number: CN117526020A
Application number: CN202311728698.4A
Authority: CN
Inventors: 王银; 王正发
Original assignee: Dongguan Shengmao Electronic Technology Co ltd
Current assignee: Dongguan Shengmao Electronic Technology Co ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2024-02-06
Anticipated expiration: 2043-12-15
Also published as: CN117526020B

Abstract

The invention relates to the technical field of connectors, in particular to a waterproof electric connector. A waterproof electric connector comprises a female head and a male head, wherein a first through hole is formed in the female head, and the male head comprises a shell, a connector, an adjusting mechanism, a tail wire clamp and a rear cover. And the female head and the male head are arranged, the rubber ring is driven to move on the conical surface by pushing the push ring and the hollow ring, and the rubber ring seals a gap between the female head and the connector. When dismantling female head and public head for the direction that the rubber circle is close to the first end of connector removes, and the inner peripheral wall of rubber circle and first through-hole breaks away from the contact, thereby prevents to connect with the in-process frequent friction rubber circle of dismantlement, leads to the rubber circle impaired, influences the water-proof effects. The invention provides a waterproof electric connector, which solves the problems that when the traditional electric connector is connected, the abrasion of a sealing ring is caused, the sealing effect of the sealing ring is not tight, and the electric contact material is damaged.

Description

Waterproof electric connector

Technical Field

The invention relates to the technical field of connectors, in particular to a waterproof electric connector.

Background

Connectors, also known as circuit connectors or electrical connectors, are devices that connect two active devices for the transmission of electrical current or signals. Such devices are a component in constant contact among electronic engineering technicians and are primarily used to bridge communications between blocked or isolated circuits within the circuit. The connector is generally referred to as a connection unit between various electronic components, and is mainly used for connecting and transmitting electronic signals between chip and circuit boards and between circuit boards and a box. The method is widely applied to military systems such as aviation, aerospace, national defense and the like, so the quality requirement is quite high.

The advanced nonferrous metal materials mainly comprise high-performance aluminum alloy, high-performance copper alloy, magnesium alloy, titanium and titanium alloy, rare refractory metal materials, noble metals and the like. The electric contact material is a key element for realizing circuit control and ensuring circuit safety in the low-voltage electric appliance. Among them, noble metals such as silver, gold, platinum, etc. among advanced nonferrous metal materials are widely used in new type of electrical contact materials due to their excellent chemical and physical properties. The choice of electrical contact material in an electrical connector involves many factors, including mechanical, electrical, environmental performance requirements of the electrical connector itself, and the like.

For example, the chinese patent of the invention with the publication number CN105244687B provides a quick-plugging waterproof circular electrical connector, through the protruding fixture block and the annular buckle, in the process of inserting the plug into the socket, the protruding fixture block stretches the annular buckle to allow the plug to enter the socket, when the plug completely enters the socket, the annular buckle is folded and clamped on the upper end surface of the protruding fixture block to limit the relative displacement between the plug and the socket along the axial direction of the electrical connector, and in the process of pulling out the plug from the socket, the annular buckle is stretched to allow the plug to move out of the socket. But when connecting plug and socket, adopt the sealing washer to seal generally, peg graft in succession and can lead to wearing and tearing and the damage of sealing washer, and in prior art, owing to the existence of error, can lead to the sealing washer to extrude excessively and lead to the sealing washer to damage or extrude insufficiently and lead to the sealing washer to seal not closely not to reach waterproof effect.

Disclosure of Invention

The invention provides a waterproof electric connector, which solves the problems that the abrasion of a sealing ring is caused and the sealing effect of the sealing ring is not tight enough when the traditional electric connector is connected.

The waterproof electric connector adopts the following technical scheme: a waterproof electric connector comprises a female head and a male head, wherein a first through hole is formed in the female head, the first through hole is formed in the first direction, and the female head is provided with a first side and a second side in the first direction. The male head comprises a shell, a connector, an adjusting mechanism, a tail wire clamp and a rear cover, and one end of the shell is used for being connected with the female head. The connector sets up in the shell, and the connector sets up along first direction, and the connector has first end and second end along first direction, and the first end of connector sets up in the second side of female head, and the first end of connector slidingly sets up in first through-hole.

The adjusting mechanism comprises a push ring, a hollow ring, a rubber ring and a limiting component. The hollow ring, the push ring and the rubber ring are sequentially sleeved at the first end of the connector in a sliding manner along the direction from the first end to the second end of the connector. The first end of connector is provided with the conical surface, and the rubber circle sets up on the conical surface slidingly. The outer peripheral wall of the hollow ring is fixedly provided with an elastic piece, the elastic piece has a first state and a second state, the first state of the elastic piece is that the elastic piece is abutted against the inner peripheral wall of the push ring, and the second state of the elastic piece is that the elastic piece is separated from the push ring. The limiting component enables the push ring to move only relative to the female head in a direction approaching the first side of the female head.

One end of the tail wire clamp is arranged in the shell, one end of the tail wire clamp is connected with the second end of the connector, and the rear cover is arranged at the other end of the tail wire clamp.

Further, a first mounting groove is formed in the outer peripheral wall of the female head, the first mounting groove is formed in the first direction, and the first mounting groove comprises a clamping groove and a first chute which are sequentially formed in the direction from the first side to the second side of the female head. The first chute is gradually close to the axis of the first through hole along the direction from the first side to the second side of the female head.

The waterproof electric connector further comprises a buckle, the second mounting groove is formed in the shell, the buckle is arranged in the first direction, the middle of the buckle is rotationally arranged in the second mounting groove, a clamping block is fixedly arranged at one end, close to the clamping groove, of the buckle, and the clamping block is arranged in the clamping groove.

Further, a first chute and a second chute are formed in the female head, the first chute is arranged along a first direction, the first chute is an inclined chute, and the first chute is gradually close to the axis of the first through hole along the direction from the first side to the second side of the female head. The second spout sets up along the radial of first through-hole, and the one end of second spout and the one end intercommunication that first spout is close to the second side of female head, the other end and the first through-hole intercommunication of second spout.

The limiting component comprises a hinging rod, a pressing rod, a first spring and a ratchet bar. The articulated rod sets up along first direction, and the middle part of articulated rod rotates to be connected in the inner peripheral wall of first spout, and the one end that articulated rod is close to the first side of female head is in the draw-in groove, and the fixture block is used for offing with the one end that articulated rod is in the draw-in groove.

The pressing rod is arranged along the radial direction of the first through hole, the pressing rod is arranged in the second sliding groove in a sliding manner, one end of the pressing rod is positioned in the first sliding groove, and the other end of the pressing rod is arranged in the first through hole; the third sliding groove along the extending direction of the pressing rod is formed in the pressing rod, one end, close to the second side of the female head, of the hinging rod is slidably arranged in the third sliding groove, and a first inclined plane is formed in one end, close to the first through hole, of the pressing rod.

The ratchet bar is arranged along a first direction, the ratchet bar is fixedly arranged on the push ring, and the first inclined surface is used for being meshed with the ratchet bar. The first spring is arranged along the radial direction of the first through hole, one end of the first spring is fixedly connected to the inner peripheral wall of the first chute, and the other end of the first spring is fixedly connected to one end of the compression bar in the first chute.

Further, the female head is internally provided with a connecting groove, the connecting groove is arranged along the first direction, the connecting groove and the first through hole are sequentially arranged along the direction from the first side to the second side of the female head, and the connecting groove is communicated with the first through hole. The first end of connector is fixed to be provided with the contact, and the contact slides and sets up in the spread groove.

Further, the push ring comprises a first baffle ring and a second baffle ring, the first baffle ring and the second baffle ring are sequentially arranged along the direction from the first end to the second end of the connector, the first baffle ring and the second baffle ring are fixedly connected, and the inner peripheral wall of the second baffle ring is in friction contact with the outer peripheral wall of the connector.

The hollow ring includes first hollow baffle ring and the hollow baffle ring of second, and first hollow baffle ring and the hollow baffle ring of second set gradually along the direction from the first end to the second end of connector, first hollow baffle ring and the hollow baffle ring fixed connection of second, and first hollow baffle ring and the inside cavity and the intercommunication of the hollow baffle ring of second. The inner peripheral walls of the first hollow baffle ring and the second hollow baffle ring are propped against the outer peripheral wall of the connector. The elastic sheet is fixedly arranged on the outer peripheral wall of the second hollow baffle ring and is used for propping against the inner peripheral wall of the first baffle ring.

Further, the elastic sheet is made of a deformable material, when the elastic sheet is in the first state, the elastic sheet protrudes outwards, and the elastic sheet abuts against the inner peripheral wall of the first baffle ring. When the elastic sheet is in the second state, the elastic sheet is inwards sunken, and the elastic sheet is separated from contact with the first baffle ring.

Further, the first hollow baffle ring is a deformable material.

Further, the first end of the connector includes a first connection post and a second connection post, the first connection post and the second connection post are sequentially arranged along the direction from the first end to the second end of the connector, and the diameter of the first connection post is smaller than that of the second connection post. The conical surface is positioned between the first connecting column and the second connecting column, one side with small diameter of the conical surface is connected with the first connecting column, and one side with large diameter of the conical surface is connected with the second connecting column. The hollow ring and the push ring are slidably arranged on the first connecting column, and the diameter of the first through hole is equal to that of the second connecting column. In the initial state, the diameter of the circle where the peripheral wall of the rubber ring is located is smaller than that of the second connecting column.

Further, the shell is internally fixedly provided with a third baffle ring, the third baffle ring is positioned in the middle of the shell, the middle of the connector is fixedly provided with a fourth baffle ring, and one side, close to the second end of the connector, of the fourth baffle ring is abutted against the third baffle ring. One side of the fourth baffle ring, which is close to the first end of the connector, is propped against the second side of the female connector.

Further, the second end of the connector is in threaded connection with one end of the tail wire clamp, and the other end of the tail wire clamp is in threaded connection with the rear cover.

The beneficial effects of the invention are as follows: in the waterproof electric connector, the conical surface is arranged on the connector, the rubber ring is arranged on the conical surface in a sliding manner, and in an initial state, the surface of the rubber ring is lower than the surface of the connector for being connected with the first through hole. When installing female head and public head, the connector is moved to the interior of the first through-hole of female head gradually, the rubber circle does not contact with the inner peripheral wall of first through-hole to reduce the wearing and tearing to the rubber circle, later drive the rubber circle through pushing away ring and hollow ring and remove on the conical surface, the rubber circle removes towards the direction that is close to the second end of connector, and the rubber circle removes towards the direction that is close to the inner peripheral wall of first through-hole, and then makes the rubber circle seal the clearance between female head and the connector. When dismantling female head and public head for the direction that the rubber circle is close to the first end of connector removes, and the inner peripheral wall of rubber circle and first through-hole breaks away from the contact, thereby prevents to connect with the in-process frequent friction rubber circle of dismantlement, leads to the rubber circle impaired, influences the water-proof effects.

Through push away ring and the hollow ring that set up, after the inner peripheral wall of rubber circle and first through-hole offsets, the clearance shutoff between rubber circle and the connector and the first through-hole, the space that push away ring and hollow ring place forms sealed chamber in the first through-hole. Along with continuing to promote push away ring and hollow ring, the pressure in the sealed chamber increases gradually, and the shell fragment changes from the first state to the second state, and shell fragment and first backing ring break away from the contact, and push away ring and hollow ring can the relative slip this moment. When the connectors are matched with the same batch of female heads, the size of a gap between each first through hole in the same batch of female heads and the connectors is different due to the existence of machining errors. And the connector is adapted to different female heads, and the gap between each first through hole in the different female heads and the connector is also different. This device can be according to the clearance size between first through-hole and the connector when connecting electric contact material to through removing different distances with the rubber circle, the clearance between connector and the first through-hole is bigger, the rubber circle is moved more towards the direction that is close to the second end of connector, guarantees the sealed effect of rubber circle, can not lead to the extrusion force that the rubber circle received too big to cause the damage to the rubber circle, perhaps extrusion force is too little to cause the phenomenon that sealed effect is not good, prevents that water from getting into inside the female head, causes the damage to electric contact material.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a waterproof electrical connector according to an embodiment of the present invention;

fig. 2 is a side view of a waterproof electrical connector according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view at A-A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C in FIG. 3;

fig. 6 is an exploded view of a waterproof electrical connector according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a female of a waterproof electrical connector according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a connector of a waterproof electrical connector according to an embodiment of the present invention.

In the figure: 100. a housing; 101. a buckle; 102. a second mounting groove; 200. a rear cover; 300. a female head; 301. a first through hole; 303. a clamping groove; 304. a first chute; 305. a clamping block; 306. a first chute; 307. a second chute; 400. tail wire clamp; 500. a connector; 501. a rubber ring; 502. a push ring; 5021. a first baffle ring; 5022. a second baffle ring; 503. a hollow ring; 5031. a first hollow baffle ring; 5032. a second hollow baffle ring; 504. a spring plate; 505. a contact; 506. a conical surface; 507. a fourth retainer ring; 508. a first connection post; 509. a second connection post; 600. a hinge rod; 601. and (5) pressing the rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 8, the waterproof electrical connector provided by the embodiment of the invention includes a female head 300 and a male head, a first through hole 301 is formed in the female head 300, the first through hole 301 is disposed along a first direction, and the female head 300 has a first side and a second side along the first direction.

The male comprises a housing 100, a connector 500, an adjusting mechanism, a tail clip 400 and a rear cover 200, and one end of the housing 100 is used for being connected with the female 300. The connector 500 is disposed in the housing 100, the connector 500 is disposed along a first direction, and the connector 500 has a first end and a second end along the first direction, the first end of the connector 500 is disposed on the second side of the female connector 300, and the first end of the connector 500 is slidably disposed in the first through hole 301.

The adjustment mechanism includes a push ring 502, a hollow ring 503, a rubber ring 501, and a stop assembly. The hollow ring 503, the push ring 502 and the rubber ring 501 are slidably sleeved on the first end of the connector 500 in sequence along the direction from the first end to the second end of the connector 500. The first end of the connector 500 is provided with a tapered surface 506, the radius of the tapered surface 506 gradually increases along the direction from the first end to the second end of the connector 500, and the rubber ring 501 is slidably disposed on the tapered surface 506. The outer peripheral wall of the hollow ring 503 is fixedly provided with a spring plate 504, the spring plate 504 has a first state and a second state, the first state of the spring plate 504 is that the spring plate 504 is abutted against the inner peripheral wall of the push ring 502, and the second state of the spring plate 504 is that the spring plate 504 is separated from the push ring 502. The stop assembly allows the push ring 502 to move only relative to the female 300 in a direction toward the first side of the female 300.

When the connector 500 is inserted into the first through hole 301, when the hollow ring 503 abuts against the inner side wall of the first through hole 301, the female head 300 pushes the hollow ring 503 and the push ring 502 to move relative to the connector 500, and then the push ring 502 pushes the rubber ring 501 to slide on the conical surface 506, so that the rubber ring 501 abuts against the inner peripheral wall of the first through hole 301, and a gap between the connector 500 and the female head 300 is sealed.

The connector 500, the tail clip 400, and the rear cover 200 are sequentially disposed along a direction from the first end to the second end of the connector 500. One end of the tail clip 400 is disposed in the housing 100, and one end of the tail clip 400 is connected to the second end of the connector 500, and the rear cover 200 is disposed at the other end of the tail clip 400.

The wire is sequentially passed through the rear cover 200, the tail clip 400 and the housing 100, and then the wire is soldered to the second end of the connector 500. And then the connector 500 is placed in the housing 100, and then the tail wire clamp 400 is rotated, so that one end of the tail wire clamp 400 is fixedly connected with the second end of the connector 500, and the rear cover 200 is rotated, so that the rear cover 200 is fixedly connected with the other end of the tail wire clamp 400. At this time, the connector 500, the rear cover 200 and the tail clip 400 are sequentially distributed along the direction from the first end to the second end of the connector 500, and the male assembly is completed.

In this embodiment, the outer peripheral wall of the female head 300 is provided with a first mounting groove, the first mounting groove is disposed along a first direction, and the first mounting groove includes a clamping groove 303 and a first chute 304 sequentially disposed along a direction from a first side to a second side of the female head 300. The first chute 304 gradually approaches the axis of the first through-hole 301 in a direction from the first side to the second side of the female head 300.

The waterproof electric connector further comprises a buckle 101, the shell 100 is provided with a second mounting groove 102 arranged along the first direction, the buckle 101 is arranged along the first direction, the middle of the buckle 101 is rotatably arranged in the second mounting groove 102, one end, close to the clamping groove 303, of the buckle 101 is fixedly provided with a clamping block 305, the clamping block 305 is slidably arranged in the first chute 304, and finally the clamping block 305 is arranged in the clamping groove 303.

When the male and female heads 300 are connected, the female and male heads 300 and 300 are moved close to each other, the clamping block 305 slides in the first chute 304, and when the connector 500 completely enters the first through hole 301, the clamping block 305 enters the clamping groove 303, so as to prevent the housing 100 and the female head 300 from being separated.

In this embodiment, a first chute 306 and a second chute 307 are provided in the female head 300, the first chute 306 is disposed along a first direction, the first chute 306 is an inclined chute, and the first chute 306 gradually approaches to the axis of the first through hole 301 along a direction from the first side to the second side of the female head 300. The second sliding groove 307 is disposed along the radial direction of the first through hole 301, one end of the second sliding groove 307 communicates with one end of the first sliding groove 306 near the second side of the female head 300, and the other end of the second sliding groove 307 communicates with the first through hole 301.

The limit assembly comprises a hinge rod 600, a compression bar 601, a first spring and a ratchet bar. The hinge rod 600 is disposed along the first direction, the middle part of the hinge rod 600 is rotatably connected to the inner peripheral wall of the first chute 306, one end of the hinge rod 600 close to the first side of the female connector 300 is located in the clamping groove 303, and the clamping block 305 is used for abutting against one end of the hinge rod 600 located in the clamping groove 303. In the initial state, the end of the hinge rod 600 near the first side of the female head 300 is spaced from the axis of the first through hole 301 more than the end of the hinge rod 600 near the second side of the female head 300 is spaced from the axis of the first through hole 301. The compression bar 601 is arranged along the radial direction of the first through hole 301, the compression bar 601 is arranged in the second chute 307 in a sliding manner, one end of the compression bar 601 is positioned in the first chute 306, and the other end of the compression bar 601 is arranged in the first through hole 301; the compression bar 601 is provided with a third sliding groove along the extending direction of the compression bar 601, one end of the hinge bar 600 close to the second side of the female head 300 is slidingly arranged in the third sliding groove, and one end of the compression bar 601 close to the first through hole 301 is provided with a first inclined surface. In the initial state, one end of the compression bar 601, which is close to the first through hole 301, extends out of the third sliding groove.

The ratchet bar is disposed along a first direction, the ratchet bar is fixedly disposed on the push ring 502, and the first bevel is configured to engage the ratchet bar. The first spring is disposed along the radial direction of the first through hole 301, one end of the first spring is fixedly connected to the inner peripheral wall of the first chute 306, and the other end of the first spring is fixedly connected to one end of the compression bar 601 located in the first chute 306.

When the male and female connectors 300 are connected, the connector 500 moves toward the inside of the first through hole 301, and because the end of the compression bar 601, which is close to the first through hole 301, extends out of the third sliding groove, the compression bar 601 will engage with the ratchet bar, but the compression bar 601 and the ratchet bar do not affect the push ring 502 to move toward the inside of the first through hole 301.

When the male and female heads 300 are connected, the clamping block 305 enters the clamping groove 303, the clamping block 305 presses one end of the hinge rod 600 in the clamping groove 303 against, so that the pressing rod 601 moves towards the inside of the second sliding groove 307, and the pressing rod 601 and the ratchet bar are separated from contact.

When the male and female heads 300 are detached, the buckle 101 is pressed to move the clamping block 305 out of the clamping groove 303, and at the moment, under the action of the first spring, the pressing rod 601 moves towards the outer part of the second sliding groove 307 in a reset mode, and the pressing rod 601 is meshed with the ratchet bar. Then the female head 300 and the male head are far away from each other, the push ring 502 cannot move towards the outside of the first through hole 301 due to the action of the ratchet bar, the connector 500 moves relative to the push ring 502 and the hollow ring 503, namely the connector 500 gradually moves towards the outside of the first through hole 301, so that the rubber ring 501 moves towards the first end of the connector 500, the rubber ring 501 and the inner peripheral wall of the first through hole 301 gradually break away from contact, and abrasion of the rubber ring 501 when the connector 500 is taken out is prevented.

In this embodiment, a connection groove is further formed in the female head 300, the connection groove is disposed along the first direction, the connection groove and the first through hole 301 are sequentially disposed along the direction from the first side to the second side of the female head 300, and the connection groove is communicated with the first through hole 301. The first end of the connector 500 is fixedly provided with a contact 505, and the contact 505 is slidably disposed in the connecting slot. When the hollow ring 503 abuts against the inner side wall of the first through hole 301, the contact 505 has not yet completely entered into the connection groove.

In this embodiment, the push ring 502 includes a first retainer ring 5021 and a second retainer ring 5022, and the first retainer ring 5021 and the second retainer ring 5022 are sequentially disposed along a direction from the first end to the second end of the connector 500, the first retainer ring 5021 and the second retainer ring 5022 are fixedly connected, and an inner circumferential wall of the second retainer ring 5022 is in frictional contact with an outer circumferential wall of the connector 500. The side of the second retainer 5022 away from the first retainer 5021 abuts against the rubber ring 501.

The hollow ring 503 includes a first hollow baffle ring 5031 and a second hollow baffle ring 5032, the first hollow baffle ring 5031 and the second hollow baffle ring 5032 are sequentially disposed along a direction from the first end to the second end of the connector 500, the first hollow baffle ring 5031 and the second hollow baffle ring 5032 are fixedly connected, and the first hollow baffle ring 5031 and the second hollow baffle ring 5032 are hollow and are communicated. The inner peripheral walls of the first hollow stopper ring 5031 and the second hollow stopper ring 5032 are abutted against the outer peripheral wall of the joint 500 and are in frictional contact. One side of the first hollow stopper ring 5031 away from the first stopper ring 5021 abuts against the inner side wall of the first through hole 301. The elastic piece 504 is fixedly arranged on the outer peripheral wall of the second hollow baffle ring 5032, and the elastic piece 504 is used for propping against the inner peripheral wall of the first baffle ring 5021.

In this embodiment, the elastic piece 504 is made of a deformable material, when the elastic piece 504 is in the first state, the elastic piece 504 protrudes outwards, and the elastic piece 504 abuts against the inner peripheral wall of the first retaining ring 5021. When the elastic piece 504 is in the second state, the elastic piece 504 is recessed inward, and the elastic piece 504 is separated from the first blocking ring 5021.

When the push ring 502 pushes the rubber ring 501 to slide on the conical surface 506 in the process of connecting the male head and the female head 300, after the rubber ring 501 abuts against the inner peripheral wall of the first through hole 301, the rubber ring 501 is gradually deformed, the rubber ring 501 seals the gap between the connector 500 and the first through hole 301, and the space where the push ring 502 and the hollow ring 503 are located in the first through hole 301 forms a sealing cavity. As the push ring 502 and the hollow ring 503 continue to be pushed, the space of the seal cavity gradually decreases, the pressure in the seal cavity gradually increases, the elastic sheet 504 deforms after being pressed, the elastic sheet 504 is changed from being convex outwards to being concave inwards, that is, the elastic sheet 504 is changed from the first state to the second state, the elastic sheet 504 and the first baffle ring 5021 are separated from contact, and at the moment, the push ring 502 and the hollow ring 503 can relatively slide.

In this embodiment, the first hollow baffle 5031 is a deformable material.

When the male and female connectors 300 are disassembled, that is, in the process that the connector 500 gradually moves towards the outside of the first through hole 301, one end of the compression bar 601 extends out of the second chute 307, the hollow ring 503 continues to move outwards, one ends of the first hollow baffle ring 5031 and the compression bar 601 are abutted against each other, the compression bar 601 deforms the first hollow baffle ring 5031, the inner space of the first hollow baffle ring 5031 and the second hollow baffle ring 5032 is reduced, the inner pressure is increased, the elastic sheet 504 is reset, and the elastic sheet 504 is restored to the first state from the second state.

In this embodiment, the first end of the connector 500 includes a first connection post 508 and a second connection post 509, and the first connection post 508 and the second connection post 509 are sequentially disposed along the direction from the first end to the second end of the connector 500, and the diameter of the first connection post 508 is smaller than the diameter of the second connection post 509. The tapered surface 506 is located between the first connecting post 508 and the second connecting post 509, and the side of the tapered surface 506 with the smaller diameter is connected to the first connecting post 508, and the side of the tapered surface 506 with the larger diameter is connected to the second connecting post 509. The hollow ring 503 and the push ring 502 are slidably disposed on the first coupling post 508, and the diameter of the first through hole 301 is equal to the diameter of the second coupling post 509. In the initial state, the outer diameter of the rubber ring 501 is smaller than the diameter of the second connecting post 509.

During the process of inserting the connection head 500 into the first through hole 301, the rubber ring 501 is not in contact with the inner peripheral wall of the first through hole 301 at the beginning, so that abrasion to the rubber ring 501 is reduced, after the hollow ring 503 is abutted against the inner side wall of the first through hole 301, the push ring 502 and the hollow ring 503 push the rubber ring 501 to move on the conical surface 506, the rubber ring 501 moves towards the direction approaching the second end of the connection head 500, and the rubber ring 501 moves towards the direction approaching the inner peripheral wall of the first through hole 301.

In this embodiment, a third retaining ring is fixedly disposed in the housing 100, the third retaining ring is located in the middle of the housing 100, a fourth retaining ring 507 is fixedly disposed in the middle of the connector 500, and one side of the fourth retaining ring 507, which is close to the second end of the connector 500, abuts against the third retaining ring. One side of fourth stop ring 507 near the first end of connector 500 abuts against the second side of female connector 300.

In this embodiment, the second end of the connector 500 is screwed to one end of the tail clip 400, and the other end of the tail clip 400 is screwed to the rear cover 200.

The working process comprises the following steps: firstly, assembling a male head: the wire is sequentially passed through the rear cover 200, the tail clip 400 and the housing 100, and then the wire is soldered to the second end of the connector 500. And then the connector 500 is placed in the housing 100, and then the tail wire clamp 400 is rotated, so that one end of the tail wire clamp 400 is fixedly connected with the second end of the connector 500, and the rear cover 200 is rotated, so that the rear cover 200 is fixedly connected with the other end of the tail wire clamp 400. At this time, the connector 500, the rear cover 200 and the tail clip 400 are sequentially distributed along the direction from the first end to the second end of the connector 500, and the male assembly is completed.

The male and female heads 300 are then connected: the female and male heads 300 and 305 are moved closer to each other, the latch 305 slides in the first chute 304, the first end of the connector 500 gradually enters the first through hole 301, and the contact 505 gradually enters the connecting groove. In the initial state, the compression bar 601 extends out of the second sliding groove 307. The elastic piece 504 is in the first state, the elastic piece 504 abuts against the inner peripheral wall of the push ring 502, and the push ring 502 and the hollow ring 503 move synchronously.

The push ring 502 and the hollow ring 503 first follow the connector 500 to move towards the inside of the first through hole 301, and at this time, the compression bar 601 is meshed with the ratchet bar, but the compression bar 601 and the ratchet bar do not influence the push ring 502 to move towards the inside of the first through hole 301. And at this time the rubber ring 501 is not in contact with the inner peripheral wall of the first through hole 301 to reduce abrasion of the rubber ring 501.

When the first hollow retainer 5031 abuts against the inner side wall of the first through hole 301, the female head 300 and the connector 500 continue to approach, the female head 300 pushes the push ring 502 and the hollow ring 503 to slide relative to the connector 500, the push ring 502 and the hollow ring 503 move toward the second end of the connector 500, and pushes the rubber ring 501 to move on the tapered surface 506, the rubber ring 501 moves toward the second end of the connector 500, and the rubber ring 501 moves toward the inner peripheral wall of the first through hole 301.

When the rubber ring 501 abuts against the inner peripheral wall of the first through hole 301, the rubber ring 501 is gradually deformed, the rubber ring 501 seals the gap between the connector 500 and the first through hole 301, and the space where the push ring 502 and the hollow ring 503 are located in the first through hole 301 forms a sealing cavity. As the push ring 502 and the hollow ring 503 continue to be pushed, the space of the seal cavity gradually decreases, the pressure in the seal cavity gradually increases, the elastic sheet 504 deforms after being pressed, the elastic sheet 504 is changed from being convex outwards to being concave inwards, that is, the elastic sheet 504 is changed from the first state to the second state, the elastic sheet 504 and the first baffle ring 5021 are separated from contact, and at the moment, the push ring 502 and the hollow ring 503 can relatively slide.

Because the inner circumferential wall of the second retainer 5022 is in frictional contact with the outer circumferential wall of the connector 500, when the hollow ring 503 is pushed continuously, the push ring 502 and the connector 500 are relatively stationary, the push ring 502 and the hollow ring 503 are relatively moved, and the hollow ring 503 gradually approaches the push ring 502 until the contact 505 completely enters the connecting groove. When the contact 505 completely enters the connecting slot, the clamping block 305 enters the clamping slot 303, and the clamping block 305 presses one end of the hinge rod 600 in the clamping slot 303 against, so that the pressing rod 601 moves towards the inside of the second sliding slot 307, and the pressing rod 601 and the ratchet bar are separated from contact.

When the connection head 500 is adapted to the same batch of the female heads 300, the size of the gap between each first through hole 301 in the same batch of the female heads 300 and the connection head 500 may be different due to the presence of the machining error. And the gap between each of the first through holes 301 in the different female heads 300 and the connection head 500 is also different when the connection head 500 is fitted to the different female heads 300. This device can be according to the clearance size between first through-hole 301 and the connector 500 to through the clearance with rubber circle 501 removes different distances, the clearance between connector 500 and the first through-hole 301 is bigger the more, and rubber circle 501 moves towards the direction that is close to the second end of connector 500, guarantees the sealed effect of rubber circle 501, can not lead to the extrusion force that rubber circle 501 received too big to cause the damage to rubber circle 501, perhaps extrusion force is too little to cause the phenomenon that sealed effect is not good.

Disassembling the connector: when the connector is detached, the buckle 101 is pressed to move the clamping block 305 out of the clamping groove 303, and at the moment, under the action of the first spring, the pressing rod 601 moves towards the outer part of the second sliding groove 307 in a reset mode, and the pressing rod 601 is meshed with the ratchet bar.

Then the female head 300 and the male head are far away from each other, the push ring 502 cannot move towards the outside of the first through hole 301 due to the action of the ratchet bar, the connector 500 moves relative to the push ring 502 and the hollow ring 503, namely the connector 500 gradually moves towards the outside of the first through hole 301, so that the rubber ring 501 moves towards the first end of the connector 500, the rubber ring 501 and the inner peripheral wall of the first through hole 301 gradually break away from contact, and abrasion of the rubber ring 501 when the connector 500 is taken out is prevented.

When the rubber ring 501 and the inner peripheral wall of the first through hole 301 are completely separated from contact, at this time, resistance is obviously felt to be reduced when the connector 500 is pulled outwards, then one end of the hinge rod 600 in the clamping groove 303 is manually pressed, so that the compression rod 601 moves towards the inside of the second sliding groove 307, the compression rod 601 and the ratchet bar are separated from contact, when the connector 500 is continuously moved outwards, the connector 500 drives the push ring 502 and the hollow ring 503 to synchronously move towards the outside of the first through hole 301 until the compression rod 601 passes over the ratchet bar, the hinge rod 600 is released, the compression rod 601 is reset, one end of the compression rod 601 extends out of the second sliding groove 307, when the hollow ring 503 continuously moves outwards, one ends of the first hollow baffle ring 5031 and the compression rod 601 are propped against, the compression rod 601 enables the first hollow baffle ring 5031 to deform, the inner space of the first hollow baffle ring 5031 and the second hollow baffle ring 5032 is reduced, the inner pressure is increased, further the elastic sheet 504 is reset, and the elastic sheet 504 is restored to the first state from the second state, and is convenient to use next time. Finally, the rear cover 200 and the tail clip 400 are disassembled.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A waterproof electrical connector, characterized by:

the female head comprises a female head and a male head, a first through hole is formed in the female head, the first through hole is formed in the first direction, and the female head is provided with a first side and a second side along the first direction; the male head comprises a shell, a connector, an adjusting mechanism, a tail wire clamp and a rear cover, and one end of the shell is connected with the female head; the connector is arranged in the shell, the connector is arranged along a first direction, the connector is provided with a first end and a second end along the first direction, the first end of the connector is arranged on the second side of the female connector, and the first end of the connector is slidingly arranged in the first through hole;

the adjusting mechanism comprises a push ring, a hollow ring, a rubber ring and a limiting component; the hollow ring, the push ring and the rubber ring are sleeved at the first end of the connector in a sliding manner along the direction from the first end to the second end of the connector; the first end of the connector is provided with a conical surface, and the rubber ring is arranged on the conical surface in a sliding manner; the outer peripheral wall of the hollow ring is fixedly provided with an elastic piece, the elastic piece has a first state and a second state, the first state of the elastic piece is that the elastic piece is abutted against the inner peripheral wall of the push ring, and the second state of the elastic piece is that the elastic piece is separated from the push ring; the limiting component enables the push ring to only move towards the direction close to the first side of the female head relative to the female head;

2. A watertight electrical connector as claimed in claim 1, wherein:

the outer peripheral wall of the female head is provided with a first mounting groove which is arranged along a first direction, and the first mounting groove comprises a clamping groove and a first chute which are sequentially arranged along the direction from the first side to the second side of the female head; the first chute is gradually close to the axis of the first through hole along the direction from the first side to the second side of the female head;

3. A watertight electrical connector as claimed in claim 2, wherein:

a first chute and a second chute are arranged in the female head, the first chute is arranged along a first direction, the first chute is an inclined chute, and the first chute is gradually close to the axis of the first through hole along the direction from the first side to the second side of the female head; the second chute is arranged along the radial direction of the first through hole, one end of the second chute is communicated with one end of the first chute, which is close to the second side of the female head, and the other end of the second chute is communicated with the first through hole;

the limiting component comprises a hinging rod, a pressing rod, a first spring and a ratchet bar; the hinge rod is arranged along the first direction, the middle part of the hinge rod is rotationally connected to the inner peripheral wall of the first chute, one end of the hinge rod, which is close to the first side of the female head, is positioned in the clamping groove, and the clamping block is used for propping against one end of the hinge rod, which is positioned in the clamping groove; the pressing rod is arranged along the radial direction of the first through hole, the pressing rod is arranged in the second sliding groove in a sliding manner, one end of the pressing rod is positioned in the first sliding groove, and the other end of the pressing rod is arranged in the first through hole; the pressing rod is provided with a third sliding groove along the extending direction of the pressing rod, one end of the hinging rod, which is close to the second side of the female head, is slidingly arranged in the third sliding groove, and one end of the pressing rod, which is close to the first through hole, is provided with a first inclined surface;

the ratchet bar is arranged along a first direction, the ratchet bar is fixedly arranged on the push ring, and the first inclined surface is used for being meshed with the ratchet bar; the first spring is arranged along the radial direction of the first through hole, one end of the first spring is fixedly connected to the inner peripheral wall of the first chute, and the other end of the first spring is fixedly connected to one end of the compression bar in the first chute.

4. A watertight electrical connector as claimed in claim 1, wherein:

the female head is internally provided with a connecting groove which is arranged along a first direction, the connecting groove and the first through hole are sequentially arranged along the direction from the first side to the second side of the female head, and the connecting groove is communicated with the first through hole; the first end of connector is fixed to be provided with the contact, and the contact slides and sets up in the spread groove.

5. A watertight electrical connector as claimed in claim 1, wherein:

the push ring comprises a first baffle ring and a second baffle ring, the first baffle ring and the second baffle ring are sequentially arranged along the direction from the first end to the second end of the connector, the first baffle ring and the second baffle ring are fixedly connected, and the inner peripheral wall of the second baffle ring is in friction contact with the outer peripheral wall of the connector;

the hollow ring comprises a first hollow baffle ring and a second hollow baffle ring, the first hollow baffle ring and the second hollow baffle ring are sequentially arranged along the direction from the first end to the second end of the connector, the first hollow baffle ring and the second hollow baffle ring are fixedly connected, and the inside of the first hollow baffle ring and the inside of the second hollow baffle ring are hollow and communicated; the inner peripheral walls of the first hollow baffle ring and the second hollow baffle ring are propped against the outer peripheral wall of the connector; the elastic sheet is fixedly arranged on the outer peripheral wall of the second hollow baffle ring and is used for propping against the inner peripheral wall of the first baffle ring.

6. The waterproof electrical connector of claim 5, wherein:

the elastic sheet is made of a deformable material, and when the elastic sheet is in a first state, the elastic sheet protrudes outwards and abuts against the inner peripheral wall of the first baffle ring; when the elastic sheet is in the second state, the elastic sheet is inwards sunken, and the elastic sheet is separated from contact with the first baffle ring.

7. The waterproof electrical connector of claim 5, wherein:

the first hollow baffle ring is a deformable material.

8. A watertight electrical connector as claimed in claim 1, wherein:

the first end of the connector comprises a first connecting column and a second connecting column, the first connecting column and the second connecting column are sequentially arranged along the direction from the first end to the second end of the connector, and the diameter of the first connecting column is smaller than that of the second connecting column; the conical surface is positioned between the first connecting column and the second connecting column, one side with small diameter of the conical surface is connected with the first connecting column, and one side with large diameter of the conical surface is connected with the second connecting column; the hollow ring and the push ring are arranged on the first connecting column in a sliding manner, and the diameter of the first through hole is equal to that of the second connecting column; in the initial state, the diameter of the circle where the peripheral wall of the rubber ring is located is smaller than that of the second connecting column.

9. A watertight electrical connector as claimed in claim 1, wherein:

a third baffle ring is fixedly arranged in the shell, the third baffle ring is positioned in the middle of the shell, a fourth baffle ring is fixedly arranged in the middle of the connector, and one side, close to the second end of the connector, of the fourth baffle ring abuts against the third baffle ring; one side of the fourth baffle ring, which is close to the first end of the connector, is propped against the second side of the female connector.

10. A watertight electrical connector as claimed in claim 1, wherein:

the second end of the connector is in threaded connection with one end of the tail wire clamp, and the other end of the tail wire clamp is in threaded connection with the rear cover.