CN110137735B

CN110137735B - Sealed detachable electric connector

Info

Publication number: CN110137735B
Application number: CN201910430545.9A
Authority: CN
Inventors: 何国兵; 况云刚
Original assignee: Guizhou Space Appliance Co Ltd
Current assignee: Guizhou Space Appliance Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2021-04-06
Anticipated expiration: 2039-05-22
Also published as: CN110137735A

Abstract

The invention discloses a sealed detachable electric connector, which comprises a shell, a switching contact pin, a locking ring, a contact pin, a pressing ring, a cable locking assembly and a fixing ring, wherein the switching contact pin, the locking ring, the contact pin, the pressing ring, the cable locking assembly and the fixing ring are arranged in the shell, the locking ring is sleeved on the switching contact pin, the contact pin is divided into a contact pin head, a contact pin flange and a crimping barrel which are sequentially connected into a whole, the contact pin head is connected with the lower part of a rotating contact pin, the pressing ring is arranged below the contact pin flange and is sleeved outside the crimping barrel in an empty mode, the cable locking assembly is arranged below the pressing ring and is fixed through the fixing ring, an O-shaped ring. This connector can realize that the true seal can be dismantled, guarantees that the inside and outside homoenergetic of connector installation equipment keeps sealed isolated in inserting to close or demolish the back at the connector contact, guarantees that equipment inside can not receive the pollution, improves the whole environmental resistance performance of equipment.

Description

Sealed detachable electric connector

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a sealed detachable electric connector.

Background

At present, the electric connector with the detachable contact element generally adopts a spring supporting ring or a thorn supporting structure to fix the contact element on an insulator, and in order to ensure that the contact element is detachable, the aperture of the insulator must be larger than the outer diameter of the contact element, so that a large gap exists between the insulator and the contact element, and the product structure cannot realize a sealing function.

In the prior art, in order to realize a better sealing function, the electric connector generally adopts glass sintering or encapsulation sealing colloid as an insulator, the contact element is fixed with the shell through the insulator, although sealing can be realized through the structure, the contact element can not be detached, when individual contact element is damaged, the product can not be reworked and repaired, the product is scrapped integrally, and great waste is caused.

Therefore, the conventional connector generally cannot simultaneously achieve both sealing and detachable functions, but with the development of connector technology, some special connectors capable of basically achieving sealing and detachable functions have appeared. For example, chinese patent publication No. CN109149208A discloses a sealing structure for a detachable contact element and an insulating base of an electrical connector, which is mainly detachable through a spring ring fixing structure, and meanwhile, an elastic O-ring is added between the contact element and an insulator to realize sealing, but in this structure, the O-ring can be compressed to realize sealing only after the contact element is installed, and when the contact element is not assembled, an assembly hole of the insulator contact element is through, and thus, sealing in the fundamental sense cannot be realized.

Disclosure of Invention

To solve the above problems, the present invention provides a sealed detachable electrical connector. The connector structure can realize that the contact element can be disassembled and the inside and the outside of the connector can be sealed simultaneously, and the sealing function of the connector is not influenced in the disassembling process of the contact element.

The invention is realized by the following technical scheme.

The utility model provides a sealed electric connector of dismantling, includes the shell and sets up in inside adapter pin, locking ring, contact pin, clamping ring, cable locking subassembly, solid fixed ring of shell, and the locking ring suit is on adapter pin, the contact pin divide into and connects gradually into a holistic contact pin head, contact pin flange and a crimping section of thick bamboo, and contact pin head and rotatory contact pin sub-unit connection, contact pin flange below are arranged in to the clamping ring to the empty cover is in the crimping section of thick bamboo outside, and cable locking subassembly is located the clamping ring below to it is fixed through solid fixed ring, still be provided with O shape circle A between the adapter pin outside and the shell inner wall, the shell outside still overlaps and is equipped with O shape circle B.

The outer part of the shell is provided with a square flange and an outer annular groove.

The inner part of the shell is provided with a step hole, and the step hole is respectively composed of a step a, a step b, a step c, a step d, a step e and a step f, wherein the step f is of an internal thread structure.

The switching pinhead portion is the needle body, and the afterbody is the jack, and the middle part is step I and step II, and step I outside is the helicitic texture, and step II has the ring channel.

The fixing ring is a rigid annular insulator, the outer circle of the fixing ring is provided with threads, and the tail end of the fixing ring is provided with a dismounting groove; the thread is used for connecting with the internal thread on the step f.

The outer circle of the locking ring is provided with a dismounting groove.

The cable locking assembly is an assembly structure with an elastic body inside and a rigid insulator outside.

The shell is in clearance fit with the connector mounting hole.

Step I and step b are clearance fit.

And the shell and the pressure ring both adopt rigid insulators.

The invention has the beneficial effects that:

the sealed detachable connector has a complete and compact structural design, can realize true sealed detachment compared with the traditional connector, ensures that the inside and the outside of equipment installed with the connector can be kept sealed and isolated after the contact element of the connector is plugged or detached, ensures that the inside of the equipment is not polluted, and improves the integral environmental resistance of the equipment.

All parts of the connector are detachable structures, and related parts are all designed with structures convenient to detach, so that the connector is convenient to assemble and maintain, and the production, assembly and maintenance costs can be reduced.

After damage appears in this kind of connector structure, can maintain the change to single part, rather than traditional connector damage back is whole to be changed, has reduced the input of whole equipment, has improved the availability factor of connector.

The connector contact piece is fixed by adopting a thread locking structure, is simple in structure, stable in overall structure installation and low in production cost, and is suitable for popularization and use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the housing of the present invention;

FIG. 3 is a schematic structural diagram of an adapter pin according to the present invention;

FIG. 4 is a schematic view of a locking ring according to the present invention;

FIG. 5 is a schematic structural diagram of a contact pin according to the present invention;

FIG. 6 is a schematic view of a retaining ring according to the present invention.

In the figure: 1-shell, 2-adapter pin, 3-locking ring, 4-O-ring A, 5-O-ring B, 6-pin, 7-pressing ring, 8-cable locking component, 9-fixing ring, 11-step a, 12-square flange, 13-step B, 14-external annular groove, 15-step c, 16-step d, 17-step e, 18-step f, 21-pin, 22-step I, 23-step II, 231-annular groove, 24-jack, 31-threaded hole, 32-dismounting groove, 61-pin head part, 62-pin flange, 63-crimping barrel, 91-threaded hole and 92-dismounting groove.

Detailed Description

The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of the claimed invention is not limited thereto.

As shown in fig. 1-6, the invention provides a sealed detachable electric connector, which comprises a housing 1, an adapter pin 2, a locking ring 3, a pin 6, a press ring 7, a cable locking assembly 8 and a fixing ring 9, wherein the adapter pin 2, the locking ring 3, the press ring 7, the cable locking assembly 8 and the fixing ring 9 are arranged in the housing 1, the locking ring 3 is sleeved on the adapter pin 2, the pin 6 is divided into a pin head 61, a pin flange 62 and a press cylinder 63 which are sequentially connected into a whole, the pin head 61 is connected with the lower part of the rotary pin 2, the press ring 7 is arranged below the pin flange 62 and is sleeved outside the press cylinder 63 in an empty manner, the cable locking assembly 8 is arranged below the press ring 7 and is fixed through the fixing ring 9, an O-shaped ring a4 is further arranged between the outer side of the adapter pin 2.

The outer part of the shell 1 is provided with a square flange 12 and an outer annular groove 14. The shell flange 12 is used for realizing the fixing and positioning installation height of the connector; the outer annular groove 14 is used for mounting an O-ring B5.

The inner part of the shell 1 is provided with a step hole, the step hole is respectively composed of a step a11, a step b13, a step c15, a step d16, a step e17 and a step f18, and the step f18 is of an internal thread structure. The step d16 and the step e17 are used for realizing radial fixation of the pressure ring 7 and the cable fixing component 8.

The switching pinhead portion is needle body 21, and the afterbody is jack 24, and the middle part is step I22 and step II 23, and step I22 outside is the helicitic texture, and step II 23 has ring channel 231. The external thread of the step I22 is used for being connected with a threaded hole 31 arranged inside the locking ring 3; the annular groove 231 is used for mounting an O-ring a 4.

The fixing ring 9 is a rigid annular insulator, the outer circle of the fixing ring is provided with threads 91, and the tail end of the fixing ring is provided with a dismounting groove 92; the thread 91 is adapted to engage with an internal thread on the step f 18. Based on the removal groove 92, screwing assembly and removal of the fixing ring 9 can be achieved.

The outer circle of the locking ring 3 is provided with a dismounting groove 32. Based on the disassembly groove 32, the screwing assembly disassembly of the locking ring 3 can be realized.

The cable locking assembly 8 is an assembly structure with an elastomer inside and a rigid insulator outside. The cable fixing device is used for fixing the cable after crimping.

The O-shaped ring A4 and the O-shaped ring B5 are both annular elastomers made of silicon rubber.

The pressure ring 7 is an annular rigid insulator.

The housing 1 is a rigid insulator.

The receptacle 24 can take many forms, but it needs to make reliable electrical contact with the pin 6 after insertion; the shell 1 is in small clearance fit with the connector mounting hole; step I22 and step b13 are in small clearance fit; the connector is a cylindrical structure with a square flange 12; the adapter pin 2 and the pin 6 are both made of conductive copper alloy; the locking ring 9 is made of a metallic material.

The sealing and dismounting principle of the connector of the invention is as follows:

external sealing principle: the inner diameter of the O-ring B5 is smaller than the groove bottom diameter of the outer annular groove 14 of the shell 1, the O-ring B5 is tightly hooped in the outer annular groove 14 after being stretched and installed, the outer diameter of the O-ring B is larger than the outer diameter of the shell 1 and the diameter of the mounting hole after being assembled in place, and when the connector is installed, the mounting hole and the shell 1 compress the O-ring B5 to realize the external sealing of the connector.

Internal sealing principle: the inner diameter of the O-shaped ring A4 is smaller than the groove bottom diameter of the annular groove 231, the O-shaped ring A4 is tightly hooped in the annular groove 231 after being stretched and installed in place, and the outer diameter of the O-shaped ring A4 is larger than the outer diameter of the step II 23 and the hole diameter of the step b13 after being assembled in place, when the adapter pin 2 is installed, the annular groove 231 and the step b13 compress the O-shaped ring A4 to realize internal sealing, meanwhile, the outer diameter of the plug hole 24 is in small clearance fit with the step c15, the.

The fixed principle of switching contact pin: after the locking ring 3 is guided and installed through the step a11, the threaded hole is matched with the thread of the step I22 to be screwed and locked, and the adapter pin 2 is fixed on the shell 1.

The principle of contact assembly: the aperture of the pressing ring 7 is smaller than the outer diameter of the inserting needle flange 62, when the inserting needle 6 and the inserting hole 24 need to be inserted into the inserting hole, the thread 91 is matched with the outer thread on the step f18, the fixing ring 9 is gradually screwed in, the pressing ring 7 is indirectly pressed by the fixing ring 9 through the cable locking assembly 8, the pressing ring 7 presses the inserting needle flange 62 again, the fixing of the inserting needle 6 and the combination of the inserting needle head part 61 and the inserting hole 24 are finally realized, and the reliable electric contact is finally realized.

The principle of contact disassembly: the tail of the contact pin 6 is provided with the crimping barrel 63 which is used for loading after crimping the cable, when the contact pin 6 needs to be disassembled, the fixing ring 9 only needs to be screwed out, and the cable is pulled in the separation direction of the contact pin 6, so that the disassembly of the contact pin 6 can be realized.

In conclusion, in the process of realizing the electric contact process and the disassembly process of the pin 6 assembling and plugging, the adapter pin 2 and the shell 1, the shell 1 and the connector mounting hole are always in a sealing state, and the connector can realize the sealing and disassembling functions.

Claims

1. A sealed detachable electrical connector, comprising: comprises a shell (1), and a switching contact pin (2), a locking ring (3), a contact pin (6), a pressing ring (7), a cable locking component (8) and a fixing ring (9) which are arranged in the shell (1), wherein the locking ring (3) is sleeved on the switching contact pin (2), the contact pin (6) is divided into a contact pin head part (61), a contact pin flange (62) and a compression joint barrel (63) which are sequentially connected into a whole, the contact pin head part (61) is connected with the lower part of the adapter contact pin (2), the press ring (7) is arranged below the contact pin flange (62), and is sleeved outside the crimping barrel (63) in an empty way, the cable locking component (8) is positioned below the pressing ring (7), the adapter pin is fixed through a fixing ring (9), an O-shaped ring A (4) is further arranged between the outer side of the adapter pin (2) and the inner wall of the shell (1), and an O-shaped ring B (5) is further sleeved outside the shell (1); a square flange (12) and an outer annular groove (14) are arranged outside the shell (1); the outer circle of the locking ring (3) is provided with a dismounting groove (32);

a step hole is formed in the shell (1), and the step hole is formed by a step a (11), a step b (13), a step c (15), a step d (16), a step e (17) and a step f (18), wherein the step f (18) is of an internal thread structure;

the head of the adapter pin (2) is a pin body (21), the tail of the adapter pin is an insertion hole (24), the middle of the adapter pin is provided with a step I (22) and a step II (23), the outer part of the step I (22) is of a threaded structure, and the step II (23) is provided with an annular groove (231).

2. The sealed detachable electrical connector of claim 1, wherein: the fixing ring (9) is a rigid annular insulator, the outer circle of the fixing ring is provided with threads (91), and the tail end of the fixing ring is provided with a dismounting groove (92).

3. The sealed detachable electrical connector of claim 1, wherein: the cable locking component (8) is a component structure with an elastic body inside and a rigid insulator outside.

4. The sealed detachable electrical connector of claim 1, wherein: the shell (1) is in clearance fit with the connector mounting hole.

5. The sealed detachable electrical connector of claim 1, wherein: the step I (22) and the step b (13) are in clearance fit.

6. The sealed detachable electrical connector of claim 1, wherein: the shell (1) and the pressure ring (7) both adopt rigid insulators.