CN111864479A

CN111864479A - High voltage connector

Info

Publication number: CN111864479A
Application number: CN202010571110.9A
Authority: CN
Inventors: 姚宇; 王利甫
Original assignee: Changzhou Fisno Connector Co Ltd
Current assignee: Changzhou Fisno Connector Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-10-30

Abstract

The invention discloses a high-voltage connector, which comprises a socket, a plug and a locking mechanism for locking the socket and the plug after the socket and the plug are oppositely inserted, wherein the plug comprises a plug shell, a plug front plastic part, a plug rear plastic part, a compression joint ring, a crown spring, a rubber wire sealing body, a plug tail cover, jack bodies with the number corresponding to that of contact pins and cables electrically connected with the jack bodies one by one; the compression ring is in compression joint with a shielding layer of the cable, the crown spring is assembled at the tail position in the plug shell, the compression ring is arranged in the crown spring in a penetrating way, and the compression ring supports the crown spring from the interior of the crown spring to enable the periphery of the crown spring to be in close contact with the inner wall of the plug shell; a metal elastic body which can form electric connection between the socket shell and the plug shell when the socket shell and the plug shell are assembled in place is arranged between the socket shell and the plug shell. Through set up the crimping ring at the cable shielding layer to and the crimping ring is worn to establish in the hat spring, can guarantee that the cable shielding layer passes through crimping ring, hat spring, and realize 360 totally closed shielding capacities between the plug shell, promote the fail safe nature of connector.

Description

High voltage connector

Technical Field

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

Background

The high-voltage connector consists of a high-voltage plug and a high-voltage socket, and the high-voltage plug and the high-voltage socket are plugged and pulled out to realize the connection and disconnection of the plug and the socket. In order to prevent the high-voltage connector from being pulled out by mistake in the using state, the relative positions of the plug, the socket plug and the over-locking mechanism are locked. In order to ensure the stable use of the high-voltage connector and reduce the use risk, a shielding structure is added in the connector, the existing shielding structure has more related parts, the contact of a shielding part is not firm enough, and the shielding effect is unstable.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a high-voltage connector with stable shielding performance.

The technical scheme for realizing the invention is as follows

The high-voltage connector comprises a socket, a plug and a locking mechanism for locking the socket and the plug after the socket and the plug are oppositely inserted, wherein the socket comprises a socket shell, a socket front plastic part and a socket rear plastic part; and more than one contact pin assembled in the socket shell;

the socket front plastic part and the socket rear plastic part are assembled in the socket shell, the socket front plastic part is provided with butt-joint insertion cavities corresponding to the number of the contact pins, the fixed ends of the contact pins are limited between the socket front plastic part and the socket rear plastic part, and the free ends of the contact pins extend into the butt-joint insertion cavities;

The plug comprises a plug shell, a plug front plastic part, a plug rear plastic part, a compression joint ring, a crown spring, a rubber wire sealing body, a plug tail cover, jack bodies the number of which corresponds to that of contact pins, and cables which are electrically connected with the jack bodies one by one;

the front end of the front plug plastic part is provided with opposite insertion parts which are inserted into the opposite insertion cavities in a one-to-one correspondence manner, and when the opposite insertion parts are inserted into the opposite insertion cavities, the contact pins are electrically connected with the jack bodies; the rubber wire sealing body is assembled in the tail part of the plug shell, the outer wall of the rubber wire sealing body and the inner wall of the plug shell form sealing, and a cable passes through the rubber wire sealing body and forms sealing with the outer wall of the cable; the plug rear plastic part is assembled at the tail part in the plug front plastic part;

the compression ring is arranged in the crown spring in a penetrating way, and supports the crown spring from the interior of the crown spring to enable the periphery of the crown spring to be in close contact with the inner wall of the plug shell;

the socket shell, the plug shell, the crimping ring and the crown spring are metal pieces;

and a metal elastic body which enables the socket shell and the plug shell to form electric connection when the socket shell and the plug shell are assembled in place is arranged between the socket shell and the plug shell.

By adopting the technical scheme, the crimping ring is arranged on the cable shielding layer and is arranged in the crown spring in a penetrating mode, the 360-degree totally-enclosed shielding capacity between the cable shielding layer and the plug shell through the crimping ring and the crown spring can be guaranteed, and the safety and reliability of the connector are improved.

Furthermore, an annular sealing groove is formed in the periphery of the plug outer shell, and an annular plug sealing element is assembled in the annular sealing groove; after the oppositely inserted sealing element is assembled in the annular sealing groove, the periphery of the oppositely inserted sealing element is higher than the peripheral surface of the plug shell;

when the socket shell is inserted into the plug shell, the periphery of the inserted sealing piece is contacted with the inner wall of the socket shell to form sealing.

Furthermore, the tail part in the plug front plastic part is provided with a creepage part which extends towards the tail part so as to ensure the safe distance between the jack bodies.

Furthermore, the locking mechanism comprises a locking sleeve with a circular cavity inside, a stop annular table is arranged in the middle of the locking sleeve, a gear annular table matched with the stop annular table is arranged outside the plug shell, and one end of the locking sleeve is sleeved on the plug shell;

the other end of the locking sleeve is internally provided with a spiral groove, the tail part of the spiral groove is provided with a clamping groove, the outer wall of the locking sleeve is provided with a through hole communicated with the clamping groove, and the socket shell is provided with a clamping part which is clamped into the spiral groove and moves to the clamping groove along the track of the spiral groove.

Furthermore, the high-voltage connector also comprises a signal feedback structure, wherein the signal feedback structure comprises a signal contact pin and a signal jack body, the signal contact pin is assembled in the plug shell, and the signal jack body is assembled in the socket shell; when the socket and the plug are plugged, the signal contact pin is inserted into the signal jack body to form a signal loop.

Furthermore, a gear table for forming a gear for an inner end face of a rubber wire sealing body loaded from the tail portion is arranged in the tail portion of the plug outer shell, a first positioning column inserted into the rubber wire sealing body to form positioning is fixedly arranged on the gear table, a second positioning column is arranged on the outer end face of the rubber wire sealing body, and a positioning hole for the second positioning column to insert is formed in the plug tail cover.

Furthermore, the plug tail cover is clamped at the tail part of the plug outer shell and provided with a cable hole for a cable to pass through, the outer end face of the plug tail cover is positioned around the cable hole and extends outwards to form a reinforcing structure, and the reinforcing structure comprises an annular part extending outwards to enclose the cable hole and reinforcing parts distributed around the annular part; the reinforcing part is positioned between the outer end face of the plug tail cover and the outer peripheral face of the annular part and supports the annular part.

Furthermore, the periphery of the front plastic part of the plug is provided with a clamping hook, the inner wall of the plug shell is provided with a clamping groove for clamping the clamping hook, and the depth of the clamping hook clamped into the clamping groove is larger than 0.5 mm.

Drawings

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

FIG. 2 is a rear perspective view of FIG. 1;

FIG. 3 is a plan view of the present invention;

FIG. 4 is a schematic view of section A-A in FIG. 3;

FIG. 5 is an internal cross-sectional view of the socket of the present invention;

FIG. 6 is a perspective view of the socket housing of the present invention;

FIG. 7 is an internal schematic view of a jack housing according to the present invention;

FIG. 8 is a schematic structural view of a rear plastic part of the socket of the present invention;

FIG. 9 is a schematic structural view of a front plastic part of the socket of the present invention;

fig. 10 is a schematic perspective view of the locking sleeve of the present invention;

FIG. 11 is a schematic front view of a metal elastomer according to the present invention;

FIG. 12 is a side schematic view of FIG. 11;

FIG. 13 is an internal cross-sectional view of the plug of the present invention;

FIG. 14 is a perspective view of the plug housing of the present invention;

FIG. 15 is a rear side schematic view of FIG. 14;

fig. 16 is a schematic perspective view of a front molding of the plug of the present invention;

FIG. 17 is a schematic perspective view of a rear plastic part of the plug of the present invention;

FIG. 18 is a schematic view of the crimp ring of the present invention;

FIG. 19 is a schematic perspective view of a crown spring according to the present invention;

FIG. 20 is a schematic end plan view of the crown spring of the present invention;

FIG. 21 is a schematic perspective view of a tail cap of the plug of the present invention;

FIG. 22 is a schematic perspective view of a rubber wire-sealing body according to the present invention;

FIG. 23 is a left side plan view of FIG. 3;

FIG. 24 is a cross-sectional view taken at B-B of FIG. 23;

in the drawing, 1 is a socket shell, 2 is a socket front plastic part, 3 is a socket rear plastic part, 4 is a pin, 5 is a mounting plate, 6 is a mounting hole, 7 is a sealing gasket, 701 is a gear step, 702 is an assembly step, 703 is an insertion end, 8 is an insertion cavity, 9 is an annular snap ring, 10 is a clamping groove, 11 is a butt insertion cavity, 12 is a fixed end of the pin, 13 is a free end of the pin, 14 is a clamping claw, 15 is an annular clamping groove, 16 is an annular insertion cavity, 17 is a plug shell, 18 is a plug front plastic part, 19 is a plug rear plastic part, 20 is a press-fit ring, 21 is a crown spring, 22 is a rubber seal wire body, 23 is a plug tail cover, 24 is a plug hole body, 25 is a cable, 26 is a butt insertion part, 27 is a fixing ring, 28 is a connecting sheet, 29 is a crown spring bulge, 30 is a metal elastic body, 31 is an creepage part, 32 is a top claw, 33 is a clamping hook, 3301 is a clamping groove, 34 is an annular sealing groove, and 35 is, 36 is a gear table, 37 is a first positioning column, 38 is a second positioning column, 39 is a positioning hole, 40 is a cable hole, 41 is an annular part, 42 is a reinforcing part, 43 is a locking sleeve, 44 is a convex part, 45 is a stop annular table, 46 is a gear annular table, 47 is a spiral groove, 48 is a clamping groove, 49 is a through hole, 50 is a clamping part, 51 is a signal pin, 52 is a signal jack body, 53 is a top block, 54 is a T-shaped insert block, 55 is a T-shaped slot, 56 is a slot, 57 is an axial insert block, 58 is an axial slot, and 59 is a registration groove;

101 is a socket, 102 is a plug, and 103 is a locking mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

As shown in fig. 1 to 24, the high-voltage connector comprises a socket 101, a plug 102, and a locking mechanism 103 for locking the socket and the plug after they are inserted into each other; when the plug is plugged, the plug is aligned with the socket to be plugged in, the plug and the socket are locked by the locking mechanism, the connection between the plug and the socket is realized, and when the plug is detached, the locking capability of the locking mechanism is released, so that the plug can be pulled out of the socket.

The socket 101 comprises a metal socket shell 1, a socket front plastic part 2 and a socket rear plastic part 3; and two conductive pins 4 assembled in the socket housing; the periphery of the socket shell is provided with a mounting plate 5, the mounting plate is provided with a mounting hole 6, the mounting plate, namely a socket, is mounted at a use position by inserting a connecting piece into the mounting hole, and the mounting surface of the mounting plate is provided with a sealing gasket 7 for protection and sealing; a gear step 701 is arranged in the socket shell, the socket front plastic part and the socket rear plastic part are assembled in the socket shell, an assembly step 702 matched with the gear step is arranged on the periphery of the socket rear plastic part, the socket rear plastic part is inserted into the socket shell, and the two steps are matched for limiting; the socket front plastic part is arranged in the socket shell, the socket rear plastic part is provided with an inserting cavity 703, the socket front plastic part is provided with an inserting end 8, the inserting end is inserted into the inserting cavity, then the socket front plastic part and the socket rear plastic part are clamped in an annular clamping groove 10 in the inner wall of the socket shell through an annular clamping ring 9 with a notch, and the socket front plastic part and the socket rear plastic part are limited in the socket shell.

The socket front plastic part is provided with butt-joint plug-in cavities 11 corresponding to the number of the contact pins, the fixed ends 12 of the contact pins are limited between the socket front plastic part and the socket rear plastic part, and the free ends 13 of the contact pins extend into the butt-joint plug-in cavities; the front end of the socket rear plastic part is provided with a claw 14, and the periphery of the fixed end of the contact pin is provided with an annular clamping groove 15 for the claw to be inserted into the clamping groove to form clamping position; the socket lead is fixed in the fixed end of the contact pin by adopting a connecting screw which is inserted into the contact pin from the radial direction. An annular insertion cavity 16 for inserting the plug housing is formed between the inner wall of the socket housing and the socket front plastic piece.

The plug 102 comprises a metal plug shell 17, a plug front plastic part 18, a plug rear plastic part 19, a crimping ring 20, a metal crown spring 21, a rubber wire sealing body 22, a plug tail cover 23, conductive jack bodies 24 the number of which corresponds to that of the contact pins, and cables 25 which are electrically connected with the jack bodies one by one; the front end of the front plug plastic part is provided with opposite insertion parts 26 which are correspondingly inserted into the opposite insertion cavities 11 one by one, and when the opposite insertion parts are inserted into the opposite insertion cavities, the contact pins are electrically connected with the insertion hole bodies; the rubber wire sealing body is assembled in the tail part of the plug shell, the outer wall of the rubber wire sealing body and the inner wall of the plug shell form sealing, a cable penetrates through the rubber wire sealing body and forms sealing with the outer wall of the cable, and the periphery and the inner wall of the rubber wire sealing body adopt a plurality of wavy sealing parts so as to increase the sealing capacity; the plug tail cover is clamped at the tail part of the head shell so as to fix the rubber wire sealing body in the space of the tail part in the plug shell.

The metal crimping ring is positioned between the rubber wire sealing body and the plug front plastic part, the crimping ring is circular, the inner diameter of the crimping ring is slightly larger than the outer diameter of the cable shielding layer so as to be conveniently sleeved on the cable shielding layer, and then the shielding layer is crimped on the crimping ring; the crown spring comprises two unclosed circular fixing rings 27, the two fixing rings are the same in size, the two fixing rings are connected through a plurality of connecting sheets 28 arranged at intervals, the middle part of each connecting sheet bulges inwards, the caliber formed by the bulging is smaller than the outer diameter of the compression joint ring, the crown spring is assembled at the tail part position in the plug shell, namely, the crown spring is positioned between the rubber wire sealing body and the rear end face of the front plastic part of the plug, and when the compression joint ring is not assembled, at least two fixing rings are in contact with the inner wall of the plug shell; when the compression joint ring penetrates through the crown spring, the compression joint ring supports the crown spring rising part 29 outwards from the interior of the crown spring, so that the outer wall of the connecting sheet is in close contact with the inner wall of the plug shell, a sufficient contact surface is formed between the crown spring and the plug shell, and the problem of poor contact at the position of the crown spring and shielding failure caused by the poor contact is avoided. Through the use of the crown spring, 360-degree totally-enclosed shielding can be realized, the number of adopted parts is small, the number of matching points is small, and the risk of shielding failure is reduced.

A metal elastomer 30 is provided between the jack housing and the plug housing to form an electrical connection therebetween when the two are assembled in place. Through the arrangement of the metal elastic body, the socket shell and the plug shell can be effectively connected, so that the whole connector has shielding capability; the metal elastic body is bent into an unclosed circular shape by a metal sheet and is seen from the side surface into a wavy corrugated shape, so that the metal elastic body has stronger elastic capacity, and more contact surfaces can be formed among the metal elastic body, the plug shell and the socket shell through the corrugated shape; specifically, the metal elastic body is fitted at the bottom inside the annular insertion cavity 16, and after being inserted into the space, the metal elastic body is caught at the bottom.

The plug rear plastic part is assembled at the tail part in the plug front plastic part, and the jack body is limited in the jack body assembling cavity in the plug front plastic part; the conductors of the cable are electrically connected with the jack bodies, and the tail part in the plug front plastic part is provided with a creepage part 31 which extends towards the tail part to ensure the safe distance between the adjacent jack bodies and between the jack bodies and the plug shell. The rear plastic plug part is provided with a top claw 32 which is propped against the rear end of the jack body, so that the jack body is firmly assembled in the front plastic plug part.

The periphery of the plastic part before the plug is provided with a clamping hook 33, the inner wall of the plug shell is provided with a clamping groove 3301 for the clamping of the clamping hook, and the depth of the clamping hook clamped in the clamping groove is more than 0.5mm, so that the firmness of the plastic part before the plug in the plug shell is ensured.

An annular sealing groove 34 is formed in the periphery of the plug shell, and an annular plug sealing element 35 is assembled in the annular sealing groove; after the oppositely inserted sealing element is assembled in the annular sealing groove, the periphery of the oppositely inserted sealing element is higher than the peripheral surface of the plug shell; when the socket shell is inserted into the plug shell, the periphery of the inserted sealing piece is contacted with the inner wall of the socket shell to form sealing. The sealing structure is arranged between the outer wall of the plug shell and the inner wall of the socket shell, and the sealing capacity of the plug shell and the socket shell after being plugged can be enhanced.

A gear table 36 for forming a gear on the inner end face of a rubber wire sealing body loaded from the tail part is arranged in the tail part of the plug outer shell, the other face of the gear table forms a gear on the crown spring, a first positioning column 37 inserted into the rubber wire sealing body to form positioning is fixedly arranged on the gear table, a second positioning column 38 is arranged on the outer end face of the rubber wire sealing body, and a positioning hole 39 for inserting the second positioning column is arranged on the plug tail cover. Through the setting of reference column, when can avoiding the equipment, adorn positive and negative cable anti-reverse.

The plug tail cover is clamped at the tail part of the plug outer shell and provided with a cable hole 40 for a cable to pass through, the outer end face of the plug tail cover is positioned around the cable hole and extends outwards to form a reinforcing structure, and the reinforcing structure comprises an annular part 41 extending outwards to surround the cable hole and reinforcing parts 42 distributed around the annular part; the reinforcing part is positioned between the outer end face of the plug tail cover and the outer peripheral face of the annular part and supports the annular part. Through the structure, the cable can be effectively supported, and the cable is prevented from shaking at the tail cover to influence the sealing capability.

The locking mechanism comprises a locking sleeve 43 with a circular cavity inside, a convex part 44 for increasing friction force is arranged on the periphery of the locking sleeve so as to facilitate the rotation of the locking sleeve, a stop annular table 45 is arranged in the middle of the locking sleeve, a gear annular table 46 matched with the stop annular table is arranged outside the plug shell, and one end of the locking sleeve is sleeved on the plug shell; the other end of the locking sleeve is internally provided with a spiral groove 47, the tail part of the spiral groove is provided with a clamping groove 48, the outer wall of the locking sleeve is provided with a through hole 49 communicated with the clamping groove, and the socket shell is provided with a clamping part 50 which is clamped in the spiral groove and moves to the clamping groove along the track of the spiral groove. Through the setting of through-hole 49, can observe from the outside whether screens portion is in the screens groove, whether the locking cover locks plug shell, socket shell in place promptly.

The high-voltage connector further comprises a signal feedback structure, the signal feedback structure comprises a U-shaped signal contact pin 51 and a signal jack body 52, the signal contact pin is assembled in the front plastic part of the plug, and then the signal contact pin is tightly pressed and limited in the front plastic part of the plug through a top block 53 on the rear plastic part of the plug; the two signal jack bodies are assembled in the front plastic part of the socket; when the socket and the plug are oppositely plugged, the signal contact pin is inserted into the signal jack body to form a signal loop, and when the socket and the plug are oppositely plugged, signal output is generated so as to be convenient for detecting the assembly of the contact pin and the jack body in place.

Socket shell inner wall has T shape inserted block 54, mould a outer wall before the socket and have T shape slot 55, T shape inserted block inserts in the T shape slot, mould a outer wall behind the socket and have slot 56, mould a before the socket in proper order, mould behind the socket and pack into socket shell, T shape inserted block inserts T shape slot, slot in proper order, mould a before guaranteeing the socket, mould behind the socket and mould an accurate assembly to target in place, and can avoid the two at socket shell internal rotation, reinforcing structural stability. The structure also simplifies the assembly process of the front plastic part and the rear plastic part of the socket.

And in order to guarantee the assembly accuracy between socket shell, the plug shell, insert the end periphery at the plug shell and set up axial inserted block 57, set up corresponding axial slot 58 at the inner wall of socket shell, when the plug inserts the socket, the axial inserted block inserts in the axial slot, guarantee the assembly between plug and the socket, simultaneously, also can guarantee the accurate assembly of counterpointing between contact pin and the jack body, avoid because of the assembly dislocation, and lead to the assembling process, the damage that the contact pin collision caused.

Similarly, the outer wall of the plastic part in front of the plug is provided with a positioning groove 59, and the plug shell is internally provided with a positioning insertion block.

The above embodiment shows that a two-core structure, i.e. two pins and two socket bodies, is adopted, but a three-core structure or more may be provided as required.

Claims

1. The high-voltage connector comprises a socket, a plug and a locking mechanism for locking the socket and the plug after the socket and the plug are oppositely inserted, and is characterized in that,

the socket comprises a socket shell, a socket front plastic piece and a socket rear plastic piece; and more than one contact pin assembled in the socket shell;

2. The high-voltage connector of claim 1, wherein the plug housing is provided at an outer periphery thereof with an annular seal groove in which an annular plug seal is fitted; after the oppositely inserted sealing element is assembled in the annular sealing groove, the periphery of the oppositely inserted sealing element is higher than the peripheral surface of the plug shell;

3. The high voltage connector of claim 1, wherein the tail portion in the front molding of the plug has a creepage portion extending toward the tail portion to secure a safe distance between the socket bodies.

4. The high-voltage connector as claimed in claim 1, wherein the locking mechanism comprises a locking sleeve having a circular cavity inside, a stop annular table is arranged at the middle part in the locking sleeve, a gear annular table matched with the stop annular table is arranged outside the plug housing, and one end of the locking sleeve is sleeved on the plug housing;

5. The high voltage connector of claim 1, further comprising a signal feedback structure, the signal feedback structure comprising a signal pin and a signal jack, the signal pin being assembled in the plug housing and the signal jack being assembled in the receptacle housing;

When the socket and the plug are plugged, the signal contact pin is inserted into the signal jack body to form a signal loop.

6. The high-voltage connector as claimed in claim 1, wherein a stop stage is provided in the tail portion of the plug housing for stopping an inner end surface of the rubber sealing body inserted from the tail portion, a first positioning post is fixedly provided on the stop stage for inserting the rubber sealing body to form a positioning, an outer end surface of the rubber sealing body has a second positioning post, and a positioning hole for inserting the second positioning post is provided on the plug tail cover.

7. The high voltage connector of claim 1, wherein the plug tail cover is clamped to the plug housing tail portion, the plug tail cover has a cable hole for passing a cable therethrough, the outer end surface of the plug tail cover extends outwardly around the cable hole to form a reinforcing structure, the reinforcing structure includes a ring portion extending outwardly to surround the cable hole therein, and reinforcing portions distributed around the ring portion; the reinforcing part is positioned between the outer end face of the plug tail cover and the outer peripheral face of the annular part and supports the annular part.

8. The high-voltage connector as claimed in claim 1, wherein the plug front plastic member is provided with a hook at its outer periphery, and a groove for the hook to be inserted is provided on the inner wall of the plug housing, and the depth of the hook to be inserted into the groove is greater than 0.5 mm.