CN111106467B

CN111106467B - Local shield connector

Info

Publication number: CN111106467B
Application number: CN201911168514.7A
Authority: CN
Inventors: 林倩; 韩培培; 王超; 李严亮; 胡国闯; 崔艳磊; 李亮; 王世光; 王亚楠
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2021-06-04
Anticipated expiration: 2039-11-25
Also published as: CN111106467A

Abstract

The present invention relates to the field of connectors, and more particularly to partially shielded connectors. The local shielded connector comprises a shell, a contact is arranged in the shell, the front end of the contact is a plug-in end, the rear end of the contact is a wiring end, the rear end of the shell is provided with a rear boss protruding backwards or a groove with a backward opening, at least one contact hole is a first contact hole extending to the rear boss or the groove, the contact hole beside the rear boss or the groove is a second contact hole, a shielding sleeve is sleeved on the rear boss in a conductive mode or inserted into the groove in a conductive mode, the shielding sleeve is used for shielding the wiring position of the first contact, and the rear end of the shielding sleeve is a shielding layer connecting end used for being in conductive connection with a cable shielding layer. Through the shielding sleeve at the rear end of the shell, the shielding of the wiring position of the first contact element is ensured, the anti-interference capability is improved, and the problem of poor shielding performance of the connector caused by the fact that the mutual interference between the contact elements at the wiring position cannot be shielded in the conventional connector is solved.

Description

Local shield connector

Technical Field

The present invention relates to the field of connectors, and more particularly to partially shielded connectors.

Background

In the field of petroleum, an electric connector used underground needs to bear high voltage, so the electric connector can be called a pressure-bearing connector, and when the pressure-bearing connector is used underground, high-voltage cables and various signal lines exist around the pressure-bearing connector, so the electromagnetic interference is strong. In order to reduce the number of downhole connectors, it is often necessary to install contacts with different shielding requirements into one connector, and current pressure-bearing connectors generally ensure the cable shielding performance of the connector by conducting the cable shield connected with the connector with the metal shell of the connector.

In order to reduce the number of used connectors, different types of connector contacts are currently integrated on the same connector, such as high frequency pins and low frequency pins. Although the integrated connector can reduce the number of connectors, facilitate installation and reduce failure rate, some connector pins usually require different requirements, for example, at the connector tail and the cable connector, a cable shielding layer is usually laminated on the connector housing to ensure shielding, but this shielding manner can only interfere with external electromagnetic interference, and interference inside the connector cannot be handled, so that the problem of poor electromagnetic shielding performance of the current connector is solved.

Disclosure of Invention

The invention aims to provide a local shielding connector which is used for solving the problem of poor shielding performance of the connector caused by the fact that the mutual interference between contacts at a junction cannot be shielded in the conventional connector.

The local shielding connector adopts the following technical scheme:

the partial shield connector includes:

a housing having a contact hole therein;

the front end of the contact element is a plug-in end, and the rear end of the contact element is a wiring end and is arranged in the contact element hole;

the rear end of the shell is provided with a rear boss protruding backwards or a groove with a backward opening, at least one contact element hole is a first contact element hole extending to the rear boss or the groove, a contact element hole positioned beside the rear boss or the groove is a second contact element hole, a contact element arranged in the first contact element hole is a first contact element, and a contact element arranged in the second contact element hole is a second contact element; the rear end of the first contact piece extends out of the first contact piece hole;

the shielding sleeve is sleeved on the rear boss or inserted into the groove in a conductive mode, the shielding sleeve is used for shielding the wiring position of the first contact element, and the rear end of the shielding sleeve is a shielding layer connecting end used for being in conductive connection with a cable shielding layer.

The invention has the beneficial effects that: the shielding sleeve is conductively connected with the rear boss or the groove at the rear end of the shell, so that the shielding of the wiring position of the first contact element is guaranteed, the interference of the second contact element and an external signal to the first contact element is avoided, the anti-interference capability is improved, meanwhile, a cable shielding layer is conveniently connected, and the problem that the shielding performance of the existing connector is poor due to the fact that the mutual interference between the contact elements at the wiring position cannot be shielded.

Furthermore, the shielding sleeve is in threaded connection with the inner wall of the rear boss or the groove. Simple structure, easy to assemble.

Furthermore, a wire pressing groove for pressing a cable shielding layer is formed in the rear end of the shielding sleeve. The fixing of the cable shielding layer is facilitated.

Furthermore, the front end of the shell is provided with a front boss protruding forwards, the first contact piece hole extends to the front boss, the second contact piece hole is located beside the front boss, and the front boss is used for being in conductive insertion connection with the shielding blind hole wall on the adaptive connector so as to shield the insertion connection position of the front end of the first contact piece. The anti-interference capability of the front end of the first contact element is improved.

Furthermore, the first contact element is a contact pin with the front end extending out of the front boss.

Furthermore, a shielding blind hole with a forward notch is formed in the front end of the shell, the first contact piece hole extends to the shielding blind hole and is communicated with the shielding blind hole, the second contact piece hole is located beside the shielding blind hole, a shielding part which is located between the first contact piece hole and the second contact piece hole and is used for shielding the first contact piece is arranged on the periphery of the first contact piece hole, and the shielding part extends forwards and encloses the shielding blind hole; the shielding blind hole is used for being in conductive insertion connection with a front boss of the adaptive connector shell so as to shield the first contact piece. The anti-interference capability of the front end of the first contact element is improved.

Furthermore, the shell comprises a conductive shell and an insulator which is arranged in the conductive shell and at the front end of the conductive shell, the rear boss is arranged on the conductive shell, the contact element comprises a pin element and a jack element, jacks are arranged at two ends of the jack element and are in plug-in fit with the pin element, the jack element is used for being in plug-in fit with the contact element of the adaptive connector, the jack element is fixed in the insulator, the pin element is fixed in the conductive shell, a conductive shielding sleeve is arranged in the insulator, the jack element of the first contact element is arranged in the conductive shielding sleeve, the rear end of the conductive shielding sleeve is in conductive contact with the conductive shell, the front section of the shielding part is formed by the conductive shielding sleeve, the rear section is formed by the part of the conductive shell, and the blind hole is formed. The split type shell facilitates installation of the contact element and is convenient to be plugged into the adaptive connector.

Further, the partial shield connector is a pressure-bearing connector, and the contact is hermetically assembled in the contact hole.

Furthermore, the rear end of the first contact piece extends out of the first contact piece hole, so that wiring is facilitated.

Drawings

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

FIG. 2 is a schematic diagram of a receptacle adapted to receive a plug according to an embodiment of the plug of the present invention;

in the figure: 1-a plug; 11-a plug conductive housing; 111-plug front boss; 112-plug sleeve fixing station; 121-a first plug aperture; 122-a second plug aperture; 13-a ceramic sleeve; 14-a glass seal; 151-first plug aperture contact; 152-a second plug aperture contact; 16-a plug shielding sleeve; 161-line pressing groove; 2-a socket; 201-a pin member; 202-a jack piece; 21-a socket housing; 211-a socket conductive shell; 212 — socket insulator; 213-shielding blind holes; 214-a conductive shielding sleeve; 2141-a fixed sleeve; 2142-conductive fingers; 2143-a stop collar; 215-socket front boss; 216-socket sleeve mount; 22-glass sealing body; 23-a ceramic sleeve; 241-a first socket hole; 242 — a second socket hole; 251-a first socket hole contact; 252-a second socket hole contact; 26-a socket shielding sleeve; 261-line pressing groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

Embodiment 1 of the partial shield connector of the present invention:

the partially shielded connector in this embodiment is a plug, and for understanding the partially shielded connector, the embodiment will describe in detail both the plug and a socket adapted to the plug. It should be noted that the plug and the socket in the present embodiment are distinguished in terms of names only for convenience of description.

As shown in fig. 1, the plug 1 in this embodiment is a pressure-bearing plug whose front end is a plugging end, the plug 1 includes a plug conductive housing 11, a plug contact member hole is formed in the plug conductive housing 11, a plug contact member is hermetically assembled in the plug contact member hole through a glass sealing body 14, and the plug contact members in this embodiment are all pins extending in the front-back direction. As shown in fig. 1, the front and rear ends in the plug contact hole are provided with ceramic sleeves 13, and the ceramic sleeves 13 are inserted into the plug contact hole.

The plug contact is provided with a plurality of, and wherein the three plug contact in the center has higher requirement to shielding condition, need shield in plug 1 inside, avoids other contacts in plug 1 inside to disturb it, in order to satisfy the operation requirement, in this embodiment, the front end an organic whole of the electrically conductive casing 11 of plug is equipped with preceding boss 111 of plug, and boss 111 is made with electrically conductive shielding material of plug electrically conductive casing 11 before the plug. The three holes corresponding to the plug contacts to be shielded are first plug holes 121, the first plug holes 121 extend to the plug front boss 111, the remaining plug contact holes are second plug holes 122 located beside the plug front boss, the three contacts are defined as first plug hole contacts 151, and the remaining contacts are second plug hole contacts 152 hermetically fitted in the second plug holes 122. The front end of the first plug hole contact 151 extends out of the plug front boss 111, and the front end of the second plug hole contact 152 extends out of the front end surface of the plug conductive housing 11. As shown in fig. 2, the plug front protrusion 111 is used for electrically conductive plugging with the hole wall of the shielding blind hole 213 on the adapter socket 2 to shield the first plug hole contact 151, so as to prevent the second plug hole contact 152 inside the plug 1 from interfering with the first plug hole contact 151. The length of the first plug hole contact piece extending out of the front boss of the plug is the same as the length of the second plug hole contact piece extending out of the front end face of the plug conductive shell, and the length of the first plug hole contact piece is larger than that of the second plug hole contact piece.

In order to further optimize the shielding effect of the first plug hole contact 151, in the present embodiment, the rear end of the plug conductive housing 11 is integrally provided with a plug-sleeve fixing base 112 protruding rearward, a plug shielding sleeve 16 extending rearward is screwed onto the plug-sleeve fixing base 112, and the front end of the plug shielding sleeve 16 is screwed onto the outer peripheral surface of the plug-sleeve fixing base 112. The plug-sleeve fixing base 112 is integrally provided with the plug conductive housing 11, so as to ensure that the plug shielding sleeve 16 is conductively connected with the plug conductive housing 11. In this embodiment, the first plug hole 121 extends to the plug-sleeve fixing base 112, and the rear end of the first plug hole contact 151 extends out of the first plug hole 121 into the plug shield sleeve 16. Shielding of the terminals of the first plug aperture contacts 151 is achieved by the cooperation of the plug shielding sleeve 16 with the plug conductive housing 11. The inner hole of the plug shielding sleeve 16 is used for a cable to pass through, the front end of the plug shielding sleeve is provided with an inner thread in threaded connection with the plug sleeve fixing table 112, the rear end of the plug shielding sleeve is a shielding layer connecting end used for being in conductive connection with a cable shielding layer, the shielding layer connecting end is provided with a wire pressing groove 161 for binding the cable shielding layer, the cable shielding layer is connected to the rear end of the plug shielding sleeve 16 in a laminating mode during use, and continuity of cable shielding is guaranteed. During wiring, the cable core of the cable is connected with the rear end of the first plug hole contact piece, then the plug shielding sleeve is installed on the rear boss, and finally the cable shielding layer is bound at the wire pressing groove to complete wiring of the cable.

In order to clearly express the shielding principle of the plug 1, the structure of the receptacle 2 adapted to the plug 1 needs to be described.

As shown in fig. 2, the socket 2 is a pressure-bearing socket 2 adapted to the plug 1, as shown in fig. 2, the front end of the socket 2 is a plug end, the rear end of the socket is a terminal, the socket 2 includes a socket housing 21, a socket contact hole is formed in the socket housing 21, and a socket contact is hermetically assembled in the socket contact hole.

In this embodiment, the socket contact is a split structure, and includes a pin 201 and a socket 202, which are sealed in the socket contact hole through a glass sealing body 22, and the socket contact hole is further provided with two ceramic sleeves 23 at the front and rear ends of the pin 201. The front end of the pin member 201 is a plug end, the rear end is a terminal, the front end and the rear end of the jack member 202 are plug ends provided with jacks, and the socket 2 is plugged with pins of the plug 1 through the jack member 202. In order to facilitate the installation of the receptacle member 202, in the present embodiment, the receptacle housing 21 is a split structure, the receptacle housing 21 includes a receptacle conductive shell 211 and a receptacle insulator 212 disposed in the receptacle conductive shell 211, and the receptacle contact member hole penetrates through the receptacle conductive shell 211 and the receptacle insulator 212, wherein the pin member 201 is fixed in the receptacle conductive shell 211, and the receptacle member 202 is fixed in the receptacle insulator 212.

The three socket contacts in the center of the socket 2 are plug-fit with the first plug hole contacts 151 of the plug 1, and are also contacts that need shielding. As shown in fig. 2, a shielding blind hole 213 for electrically conductive insertion with the plug front boss 111 of the plug conductive housing 11 is provided in the socket housing 21, and after the shielding blind hole 213 is electrically conductive inserted with the plug front boss 111, the mutual insertion part of the socket contact and the plug contact can be shielded. The socket contact holes corresponding to the three socket contacts to be shielded are first socket holes 241 penetrating through the shielding blind holes 213, the other socket contact holes are second socket holes 242 arranged at intervals with the shielding blind holes 213, the socket contact in the first socket holes 241 is a first socket hole contact 251, the socket contact in the second socket holes 242 is a second socket hole contact 252, the first socket hole contact 251 is plugged with the first plug hole contact 151 of the plug 1, and the second socket hole contact 252 is plugged with the second plug hole contact 152.

In this embodiment, the conductive shielding sleeve 214 is disposed in the socket insulator 212, the rear end of the conductive shielding sleeve 214 is in conductive contact with the socket conductive shell 211, the socket member 202 of the first socket hole contact 251 is disposed in the conductive shielding sleeve 214, and the socket member 202 of the first socket hole contact 251 is shielded by the conductive shielding sleeve 214, so as to prevent the socket member 202 of the first socket hole contact 251 from being subjected to electromagnetic interference from the socket member 202 of the second socket hole contact 252. The blind shielding hole 213 of the receptacle 2 is surrounded by the conductive shielding sleeve 214 and the receptacle insulator 212, and after the plug 1 is plugged into the receptacle 2, the front projection 111 of the plug is in conductive contact with the conductive shielding sleeve 214. In order to facilitate the insertion and ensure the conductive contact between the front protrusion 111 of the plug and the conductive shielding sleeve 214, and ensure the good electrical contact between the conductive shielding sleeve 214 and the conductive shell 211 of the receptacle, in this embodiment, the conductive shielding sleeve 214 includes a fixed sleeve body 2141 fixed on the insulator 212 of the receptacle and conductive elastic claws 2142 at the front and rear ends of the fixed sleeve body 2141, the conductive elastic claws 2142 extend in the front and rear direction, wherein the conductive elastic claw 2142 at the front end of the fixed sleeve body 2141 is in conductive elastic contact with the front protrusion 111 of the plug, and the conductive elastic claw 2142 at the rear end is in conductive elastic contact with the conductive shell 211 of the receptacle. The structure of the conductive shielding sleeve 214 in this embodiment is similar to that of the plug member, the front and rear ends of the conductive shielding sleeve 214 have the same structure, and the fixing sleeve body is provided with a position-limiting sleeve 2143 located at the periphery of the conductive latch 2142 to limit the deformation of the conductive latch 2142. In other embodiments, the shielding conductive sleeve may also be a rigid sleeve, or a spring sheet may be disposed in the conductive shielding sleeve.

In order to ensure the shielding of the insertion position of the pin member 201 of the first socket hole contact 251 and the socket member 202, in this embodiment, a socket front boss 215 is disposed at the center of the front end in the socket conductive shell 211, the second socket hole 242 penetrates through the socket front boss 215, the first socket hole 241 and the socket front boss 215 are disposed at an interval, the pin member 201 extends out of the socket front boss 215 and is inserted into the socket member 202 of the first socket hole contact 251, the rear end of the conductive shielding sleeve 214 is sleeved on the outer periphery of the socket front boss 215, and the conductive elastic claw 2142 at the rear end is in conductive contact with the outer periphery of the socket front boss 215, so that the conductive shielding sleeve 214 shields the insertion position of the pin member 201 of the first socket hole contact 251 and the socket member 202. The mating structure of the receptacle front projection 215 and the pin member 201, and the mating structure of the header front projection 111 and the pin on the receptacle 2 are substantially the same.

In the embodiment, the shielding portion of the socket conductive shell 211 shielding the first socket hole contact 251 and the conductive shielding sleeve 214 together form the shielding portion of the periphery of the first socket hole 241 for shielding the first socket hole contact 251, in other embodiments, the socket shell may be formed integrally by using a conductive material, at this time, the socket contact generally uses an integrated socket member or pin, and at this time, the shielding portion is formed by the conductive portion of the socket shell located at the periphery of the first socket hole contact; in other embodiments, the shielding sleeve may be arranged to penetrate through the socket housing front and back to shield the socket contact, but such a design has a small pressure resistance and is not suitable for use as a pressure-bearing connector.

In this embodiment, in order to ensure the shielding effect of the terminal of the first socket hole contact 251, the rear end of the socket conductive shell 211 is provided with a socket sleeve fixing platform 216 protruding backward, the socket sleeve fixing platform 216 is screwed with the socket shielding sleeve 26 extending backward, the front end of the socket shielding sleeve 26 is screwed on the outer peripheral surface of the socket sleeve fixing platform 216, and the socket sleeve fixing platform 216 and the plug conductive shell 11 are integrally arranged to ensure that the socket shielding sleeve 26 is conductively connected with the socket conductive shell 211. In this embodiment, the first socket hole 241 extends to the socket sleeve fixing base 216, and the rear end of the first socket hole contact 251 extends out of the first socket hole 241 into the socket shielding sleeve 26. Shielding of the terminals of the first socket hole contacts 251 is achieved by the mating of the socket shield sleeve 26 with the socket conductive shell 211. As shown in fig. 2, the inner hole of the socket shielding sleeve 26 is used for passing the cable, the front end of the socket shielding sleeve is provided with an inner thread in threaded connection with the socket sleeve fixing platform 216, the rear end of the socket shielding sleeve is a shielding layer connecting end used for being in conductive connection with a cable shielding layer, the shielding layer connecting end is provided with a wire pressing groove 261 for bundling up the cable shielding layer, and the cable shielding layer is connected to the rear end of the socket shielding sleeve 26 in a laminating manner during use, so that the continuity of cable shielding is ensured. The use mode of the socket shielding sleeve is the same as that of the plug shielding sleeve, and the description is omitted.

After the plug 1 and the socket 2 are plugged, the 360-degree shielding at the plugging position of the plug 1 and the socket 2 is realized through the action of the plug front boss 111 of the plug 1 and the conductive shielding sleeve 214, and the internal anti-interference capability of the connector is improved. Through the plug shielding sleeve 16 at the tail part of the plug 1 and the socket shielding sleeve 26 at the tail part of the socket 2, 360-degree shielding at an external wiring part is realized, and the external electric signal anti-interference capability of the connector is improved.

In this embodiment, the local shielded connector is a plug, the plug housing is a housing of the local shielded connector, the plug contact hole is a contact hole of the local shielded connector, the plug contact is a local shielded connector contact, the plug sleeve fixing station is a rear boss of the local shielded connector, the first plug hole is a first contact hole of the local shielded connector, the second plug hole is a second contact hole of the local shielded connector, the first plug hole contact is a first contact of the local shielded connector, the second plug hole contact is a second contact of the local shielded connector, the plug shielding sleeve is a shielding sleeve of the local shielded connector, and the front boss of the plug is a front boss of the local shielded connector.

In embodiment 2 of the local shielded connector of the present invention, the structure of the local shielded connector in this embodiment is different from that in embodiment 1 only in that in this embodiment, a groove with a backward opening is formed at the rear end of the housing, the shielding sleeve is electrically inserted into the groove, the first contact hole extends to the groove, the second contact hole is located beside the groove, and the shielding sleeve is in threaded connection with the inner wall of the groove. In other embodiments, the shielding sleeve and the groove can be fixed through screws.

Embodiment 3 of the local shielded connector of the present invention, the structure of the local shielded connector in this embodiment is different from that in embodiment 1 only in that the shielding sleeve and the rear boss are fixed by screws, and the side surface of the rear boss is provided with a threaded hole.

In the above embodiment, the plug contact is a pin contact, in other embodiments, the plug contact may also be a socket piece, the front end of the socket piece may be flush with the front end face of the plug front boss, the socket contact is a pin, and the socket housing is suitable for adopting an integrated conductive housing.

In the embodiment, the plug is a pressure-bearing plug, the plug contact is packaged in the plug contact hole through glass, in other embodiments, the plug is not a pressure-bearing plug, the pressure-bearing plug is suitable for common pressure occasions, and at the moment, the sealing grade of the plug contact and the plug contact hole can be properly reduced. Likewise, the socket may not be a pressure bearing socket.

In the above embodiments, the front boss of the plug is disposed at the center of the plug, and in other embodiments, the front boss of the plug may also be annular, and at this time, the plug contact that needs to be shielded is located at the outer periphery of the plug, but at this time, the complexity of the plug may be increased.

In other embodiments, the rear end of the conductive shielding sleeve may be embedded in the conductive shell of the socket, and the front end of the conductive shell of the socket may not be provided with the front boss of the socket. The front end of the plug conductive shell can be provided with no front boss, the front end of the plug conductive shell is provided with an annular shielding sleeve, the first plug hole extends to the annular shielding sleeve and is communicated with the inner part of the annular shielding sleeve, and the socket is provided with a structure matched with the annular shielding sleeve. Of course, in the case of low requirement for shielding, the front end plugging part of the plug and the socket may not be provided with an internal shield.

In other embodiments, the plug front boss may be disposed separately from the plug conductive housing, such as by being fixed by a screw. Similarly, the front boss of the socket can be separated from the conductive shell of the socket.

In other embodiments, the rear boss of the plug may also be disposed separately from the conductive housing of the plug, for example, fixed by a screw. Similarly, the rear boss of the socket can be separated from the conductive shell of the socket.

A specific embodiment 4 of the local shielded connector of the present invention is a specific embodiment 4 of the local shielded connector, where the local shielded connector in this embodiment has the same structure as the socket described in any one of the specific embodiments of the local shielded connector, and details thereof are not repeated, where the socket housing is a housing of the local shielded connector, the socket contact hole is a contact hole of the local shielded connector, the socket contact is a local shielded connector contact, the socket sleeve fixing stage is a rear boss of the local shielded connector, the first socket hole is a first contact hole of the local shielded connector, the second socket hole is a second contact hole of the local shielded connector, the first socket hole contact is a first contact of the local shielded connector, the second socket hole contact is a second contact of the local shielded connector, the socket shielding sleeve is a shielding sleeve of the local shielded connector, and the socket front boss is a front boss of the local shielded connector, the socket insulator is an insulator of the local shielding connector, and the socket conductive shell is a front boss conductive shell of the local shielding connector.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims

1. A partially shielded connector comprising:

a housing having a contact hole therein;

it is characterized in that the preparation method is characterized in that,

the rear end of the shell is provided with a rear boss protruding backwards or a groove with a backward opening, at least one contact element hole is a first contact element hole extending to the rear boss or the groove, a contact element hole positioned beside the rear boss or the groove is a second contact element hole, a contact element arranged in the first contact element hole is a first contact element, and a contact element arranged in the second contact element hole is a second contact element;

2. The partial shield connector of claim 1, wherein the shield sleeve is threaded with the rear boss or recess inner wall.

3. The partial shield connector according to claim 1 or 2, wherein the shield sleeve rear end is provided with a crimping groove for crimping a cable shield layer.

4. The partial shield connector according to claim 1 or 2, wherein the front end of the housing is provided with a front projection projecting forward, the first contact hole extends to the front projection, the second contact hole is located beside the front projection, and the front projection is used for electrically plugging with a shielding blind hole wall on the adapter connector to shield the plugging position of the front end of the first contact.

5. The partially shielded connector of claim 4, wherein the first contact is a pin having a front end projecting beyond the front boss.

6. The partial shielded connector according to claim 1 or 2, wherein the front end of the housing is provided with a blind shielding hole with a forward notch, the first contact hole extends to the position where the blind shielding hole is communicated with the blind shielding hole, the second contact hole is arranged beside the blind shielding hole, the periphery of the first contact hole is provided with a shielding part which is arranged between the first contact hole and the second contact hole and used for shielding the first contact, and the shielding part extends forwards and encloses the blind shielding hole; the shielding blind hole is used for being in conductive insertion connection with a front boss of the adaptive connector shell so as to shield the first contact piece.

7. The local shielded connector according to claim 6, wherein the housing includes a conductive shell and an insulator disposed in the conductive shell and at a front end of the conductive shell, the rear boss is disposed on the conductive shell, the contact member includes a pin member and a socket member having sockets at two ends thereof and adapted to the pin member, the socket member is adapted to the contact member of the adaptive connector, the socket member is fixed in the insulator, the pin member is fixed in the conductive shell, a conductive shield sleeve is disposed in the insulator, the socket member of the first contact member is disposed in the conductive shield sleeve, a rear end of the conductive shield sleeve is in conductive contact with the conductive shell, a front section of the shield is formed by the conductive shield sleeve, a rear section of the shield is formed by a portion of the conductive shell, and the blind hole is defined by the conductive shield sleeve and the insulator.

8. The partial shield connector according to claim 1 or 2, wherein the partial shield connector is a pressure-bearing connector, and the contact member is sealingly fitted in the contact member hole.

9. The partial shield connector according to claim 1 or 2, wherein the rear end of the first contact protrudes through the first contact hole.