Connector

Abstract

The invention relates to the technical field of conductive connecting devices, in particular to a connector. The connector comprises an insulator and a main shell, a contact piece is arranged in the insulator, the insulator comprises a main body part fixed in the main shell and a wire pressing part extending out of the main shell, and a wire pressing structure used for pressing and fixing a wire core of a cable and the contact piece is installed on the wire pressing part. The connector further comprises a shielding cylinder which is connected with the main shell in a split mode and communicated with the main shell, the shielding cylinder is arranged outside the wire pressing part in a sleeving mode so that the wire pressing structure can be covered with the shielding cylinder, and the outer surface of the shielding cylinder is provided with a shielding contact part used for being connected with a shielding layer of a cable. After the operation of the wire pressing structure is completed, the shielding cylinder is sleeved to form shielding, the shielding cylinder and the main shell are subjected to one-time connection operation to complete the installation of the shielding cylinder, the installation structure is easy to simplify, and manufacturing and installation operation are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive connection devices, and particularly relates to a connector. Background Art

[0002] With the continuous development of communication technologies, there is a large amount of mixed use of different types of communication devices, which makes the electromagnetic spectrum more compact. Signals are transmitted between devices through cables and cable connectors. To protect the transmission speed and quality of signals during signal transmission by cable connectors, the shielding performance has become an important index for evaluating cable connectors. Field-terminated connectors are generally used in indoor or outdoor occasions where on-site connection of cables is required, and require simple and convenient connection operations. Currently, field-terminated connectors usually adopt a structure in which the contact is pressed and fixed to the cable core to form conduction, and the shielding layer formed by braiding metal wires of the cable is pressed against the end of the shielding shell of the connector to form shielding conduction.

[0003] A Chinese utility model patent with the authorization announcement number CN212783881U discloses a cable connector. The connector includes a head component and a sleeve component. The sleeve component includes a cylindrical main body, a locking cap, and an elastic pressing ring. The sleeve component allows the cable to pass through for connection with the contact in the head component. The locking cap is used to squeeze the elastic pressing ring when tightened, causing the elastic pressing ring to radially contract and deform to tightly fix the cable. The sleeve component further includes a shielding wire pressing ring, which is coaxially arranged with the sleeve component and rotatable, and is axially positioned in the cylindrical main body by a retaining ring. When the sleeve component is threadedly connected to the head component, the shielding wire on the cable is pressed against the head component. The head component is used for plugging into a mating connector. It includes a component main body and a C-shaped isolation ring. The C-shaped isolation ring is rotatably sleeved on the component main body around the axis of the component main body. The component main body includes a main housing, an insulator, a contact, and a wire pressing screw. The C-shaped isolation ring has a blocking position and an avoidance position during rotation. When the C-shaped isolation ring rotates to the avoidance position, it clears the screw hole on the component main body to perform the operation of screwing the wire pressing screw. The wire pressing screw is threadedly connected to the screw hole on the component main body to press and fix the wire in the cable to the head component and conduct electricity with the contact. When the C-shaped isolation ring rotates to the blocking position, it blocks the screw hole to ensure reliable isolation between the shielding wire of the cable and the wire pressing screw. The main housing of this connector constitutes the shielding shell, the C-shaped isolation ring constitutes the blocking member, and the wire pressing screw constitutes the wire pressing structure. The wire core of the cable is pressed against the contact of the connector by the screw to form electrical connection.

[0004] In the prior art, there is also a form of pressing the wire core of the cable against the contact of the connector by a pressing wrench. For example, a on-site quick-wiring electrical connector disclosed in a Chinese utility model patent with the authorization announcement number CN218919322U. The connector includes a contact component, a front housing, a rear housing, an insulator, a pressing elastic piece, and a pressing wrench. The rear end of the front housing has a shielding ring, and a pressing ring is arranged inside the rear housing. The pressing ring can freely rotate along the axis in the rear housing. An axial stop structure is arranged inside the rear housing. The axial stop structure is used to push the pressing ring forward and press the cable shielding layer onto the shielding ring of the front housing during the threaded connection of the front and rear housings, so as to realize the conduction between the cable shielding layer and the front housing. The insulator is fixed inside the front housing, and the contact component is arranged inside the insulator. The contact component includes a plug-in component located at the front end of the connector and a wiring piece arranged at the rear end of the plug-in component. A cavity is formed on the insulator. On the one hand, the cavity is used to accommodate the pressing elastic piece and the pressing wrench, and on the other hand, it is used for the corresponding cable to pass through and be crimped with the contact component. When the pressing wrench is rotated forward, the pressing elastic piece is pressed down, and the pressing elastic piece presses the wire core of the corresponding cable onto the wiring piece at the rear end of the contact component. The pressing wrench is held in the locked position by the cooperation of the latch arranged on it and the buckle arranged on the insulator. A protective cover is arranged above the pressing wrench. The protective cover is hingedly assembled on the insulator. When the protective cover is in the closed state, it can cover the pressing wrench to prevent the shielding wire of the cable shielding layer from extending into the cavity through the gap between the pressing wrench and the insulator, causing a short circuit. The front housing of the connector constitutes a shielding shell connected to the cable shielding layer. The shielding shell is also the main housing of the connector for installing the insulator. The contact component is the contact piece. The protective cover constitutes a shielding part. The pressing elastic piece and the pressing wrench constitute a pressing structure for pressing the wire core of the cable against the contact piece of the connector to form an electrically conductive connection.

[0005] The above-mentioned connector shields the pressing structure by separately arranging a movable shielding part, so that the cable shielding layer extending to the shielding shell is isolated from the contact piece in the insulator inside the shielding shell. After this shielding part is installed on the shielding shell or the insulator, it is also necessary to realize the movable function through a rotating assembly or a hinged structure, and ensure the fixed function after the movement is in place by setting a limiting structure. In this way, different installation states need to be realized while ensuring reliable installation, making the installation structure relatively complex, not facilitating manufacturing and installation operations, and the shielding shell needs to be provided with an avoidance notch for providing an operation space at the position of the shielding part, affecting the shielding effect. Summary of the Invention

[0006] The purpose of the present invention is to provide a connector to solve the problem that the installation structure of the existing connector using a separately arranged movable shielding part to shield the pressing structure is relatively complex and not easy to manufacture.

[0007] The technical solution of the connector of the present invention is as follows: A connector includes an insulator and a main housing. A contact member is provided inside the insulator. The insulator includes a main body portion fixed inside the main housing and a wire pressing portion extending outside the main housing. A wire pressing structure for pressing and fixing the wire core of a cable to the contact member is installed on the wire pressing portion. The connector further includes a shielding cylinder body that is separately connected to and conducts with the main housing. The shielding cylinder body is sleeved outside the wire pressing portion to cover the wire pressing structure inside, and a shielding contact portion for connecting with the shielding layer of the cable is provided on the outer surface of the shielding cylinder body.

[0008] Beneficial effects: The present invention pioneeringly provides a connector with a simple wire-making structure. A shielding structure is formed by using the separately arranged main housing and shielding cylinder body. The insulator is fixedly installed by the main housing. The wire pressing portion of the insulator with the wire pressing structure extends outside the main housing. The wire pressing structure can be shielded by sleeving the shielding cylinder body outside the wire pressing portion. Based on this structure, when connecting the connector to the cable, the wire core of the cable extends into the wire pressing portion of the insulator, and the wire core of the cable is pressed and fixed to the contact member through the wire pressing structure. Then, the shielding cylinder body is sleeved on, and the shielding cylinder body is connected to the main housing. At this time, the wire pressing structure is located inside the shielding cylinder body, so that the wire pressing structure area is shielded by the shielding cylinder body. After the shielding contact portion of the shielding cylinder body is connected to the shielding layer of the cable, the shielding layer of the cable will not contact the contact member inside the insulator. In this way, by using the separately arranged main housing and shielding cylinder body, the shielding cylinder body is sleeved on after the wire pressing structure operation is completed to form a shield, and the shielding cylinder body can be installed by performing a single connection operation with the main housing. Moreover, the shielding cylinder body does not need to move after installation, which is beneficial to simplifying the installation structure, facilitating manufacturing, and facilitating installation operations. Furthermore, the shielding cylinder body can be used as a shielding member in the shape of a cylinder while serving as a shielding member, which is beneficial to improving the shielding effect.

[0009] Further, the shielding cylinder body has a connection end portion for connecting with the main housing, and the main housing is provided with a housing connection portion. The connection end portion of the shielding cylinder body is sleeved on the housing connection portion.

[0010] Further, a convex portion is provided on one of the inner wall of the connection end portion of the shielding cylinder body and the outer peripheral surface of the housing connection portion, and an interference fit portion with the convex portion is provided on the other.

[0011] Further, the main housing is provided with a limiting contact surface, and the end surface of the shielding cylinder body connected to the main housing abuts against the limiting contact surface.

[0012] Further, the connector includes an outer sleeve. The outer sleeve is sleeved outside the shielding cylinder body and fixedly connected to the main housing. The outer sleeve is provided with a pressing portion for directly or indirectly applying pressure to the shielding layer of the cable so that the shielding layer is pressed against the shielding contact portion of the shielding cylinder body and the shielding cylinder body is pressed tightly against the limiting contact surface.

[0013] Further, the connector includes an outer sleeve, which is sleeved outside the shielding cylinder and fixedly connected to the main housing. The outer sleeve is used to directly or indirectly apply pressure to the shielding layer of the cable so as to press it against the shielding contact portion of the shielding cylinder body.

[0014] Further, the shielding cylinder body is formed by curling a sheet.

[0015] Further, both ends in the curling direction of the sheet are fixedly connected.

[0016] Further, one end of the shielding cylinder body far from the main housing is a retracted necking structure to form an inclined surface or an arc surface, and the shielding contact portion includes the inclined surface or the arc surface.

[0017] Further, an inner concave structure for avoiding the convex portion on the insulator is provided on the inner wall of the shielding cylinder body, an outer convex structure is formed at the position corresponding to the inner concave structure on the outer wall of the shielding cylinder body, and the space beside the outer convex structure around the shielding cylinder body is for the shielding layer of the cable to extend into. Description of the Drawings

[0018] Figure 1 Structural schematic diagram of Embodiment 1 of the connector of the present invention; Figure 2 is Figure 1 Schematic diagram when the components of the connector in Figure 3 is Figure 1 Partial cross-sectional view of the connector in Figure 4 is Figure 2 Structural schematic diagram of the main body part of the connector in Figure 5 is Figure 2 Structural schematic diagram of the shielding cylinder body in Figure 6 Structural schematic diagram of the shielding cylinder body of Embodiment 2 of the connector of the present invention.

[0019] In the figure: 1. Connecting nut; 2. Outer sleeve; 3. Locking cap; 4. Main housing; 41. Housing connecting portion; 42. Limit contact surface; 5. Shielding cylinder body; 51. Contact convex portion; 52. Contact inclined surface; 53. Outer convex structure; 6. Insulator; 7. Pressing wrench; 8. Cable; 81. Shielding layer; 82. Core; 9. Pressing ring; 10. Rubber sleeve. Detailed Embodiments

[0020] The basic concept of the connector of the present invention is to use a main housing and a shielding cylinder body that are separately arranged. After the wire pressing structure operation is completed, the shielding cylinder body is sleeved to form a shield. The shielding cylinder body can be installed by performing a single connection operation with the main housing, which is beneficial to simplifying the structure and facilitating the manufacturing of the connector. Moreover, the shielding cylinder body serves as a shielding member in the shape of a cylinder while also serving as a shielding part, which is beneficial to improving the shielding effect.

[0021] The present invention will be specifically described below in conjunction with embodiments.

[0022] Embodiment 1 of the connector of the present invention: For the convenience of understanding, the basic composition of the connector will be described first, as Figure 1 , Figure 2 , Figure 3 shown, the connector includes a connection nut 1, an outer sleeve 2, a locking cap 3, an insulator 6, and contact members. The head end of the connector is the mating end. One end of the main housing 4 is located at the mating end of the connector to form shielding conduction with the mating connector after the connector is mated with the mating connector. The other end of the main housing 4 can be conducted with the shielding layer 81 of the cable 8. The main housing 4 constitutes a part of the shielding structure of the connector. The connection nut 1 is installed on the main housing 4 and is used to lock the connector and the mating connector together after the connector is mated.

[0023] The insulator 6 is fixed inside the main housing 4, and the contact members are fixed inside the insulator 6. One end of the contact members located at the mating end of the connector is used for plugging and mating with the contact components of the mating connector, and the other end is used for connecting with the wire cores 82 of the cable 8. The wire cores 82 of the cable 8 correspond to the contact members one by one. The outer sleeve 2 is threadedly connected to the main housing 4. A rubber sleeve 10 is installed in the inner cavity of one end of the outer sleeve 2 located at the tail end of the connector. The rubber sleeve 10 forms a tight fit with the outer skin of the cable 8. The locking cap 3 is located at the tail end of the connector and is threadedly connected to the outer sleeve 2 to prevent the rubber sleeve 10 from coming out.

[0024] This connector is a field wiring connector, and the connection operation between the connector and the cable 8 is performed at the use site. The wire cores 82 of the cable 8 need to be connected to the contact members inside the insulator 6, and the shielding structure of the connector needs to be connected to the shielding layer 81 of the cable 8. For the convenience of wiring operation, a wire pressing structure is installed on the insulator 6. The insulator 6 is provided with an open cavity for installing the wire pressing structure and for the wire cores 82 of the cable 8 to extend into. One end of the contact member for connecting the wire cores 82 is located in the open cavity. The wire cores 82 extend into the open cavity and overlap with the contact members, and then the wire cores 82 and the contact members are pressed together by operating the wire pressing structure to achieve fixed and conductive connection.

[0025] The wire pressing structure in this embodiment includes a wire pressing elastic piece and a wire pressing wrench 7. The wire pressing wrench 7 is hinged on the insulator 6. When the wire pressing wrench 7 is operated to rotate downward, the wire pressing elastic piece is pressed downward, and the wire pressing elastic piece presses the wire core 82 of the corresponding cable 8 onto the contact. The wire pressing wrench 7 is held in the locked position by the engagement of the latch provided thereon with the catch provided on the insulator 6. The principle of the wire pressing wrench 7 and the wire pressing elastic piece cooperating to press the wire core 82 and the contact is a known technology, and reference can be made to the relevant content in the patent document with the authorization announcement number CN218919322U mentioned in the background technology, which will not be elaborated here. In other embodiments, the wire pressing structure can also use a wire pressing screw. Correspondingly, the insulator 6 and the shielding structure are provided with screw holes for installing the wire pressing screw, and the wire core 82 and the contact are pressed and fixed by the pressing action of the wire pressing screw. The principle of using the wire pressing screw to press the wire core 82 and the contact is a known technology, and reference can be made to the relevant content in the patent document with the authorization announcement number CN212783881U mentioned in the background technology, which will not be elaborated here.

[0026] After the cable 8 is made, a section of the shielding layer 81 of the cable 8 is exposed. To prevent the metal wires of the shielding layer 81 from forming a short circuit with the contact through the wire pressing structure, the wire pressing structure needs to be shielded.

[0027] In order to shield the wire pressing structure and simplify the connector structure, in combination with Figure 4 and Figure 5 , the connector further includes a shielding cylinder 5 separately provided from the main housing 4. The insulator 6 includes a main body portion fixed in the main housing 4 and a wire pressing portion extending outside the main housing 4. The wire pressing structure is provided on the wire pressing portion of the insulator 6. The shielding cylinder 5 is sleeved outside the wire pressing portion of the insulator 6. The wire pressing structure is located inside the shielding cylinder 5. The shielding cylinder 5 covers the wire pressing structure inside. The shielding cylinder 5 is connected to the main housing 4. The outer surface of the shielding cylinder 5 is provided with a shielding contact portion for connecting with the shielding layer 81 of the cable 8.

[0028] When performing the connection operation between the connector and the cable 8, the core 82 of the cable 8 extends into the wire pressing portion of the insulator 6, and the core 82 of the cable 8 is tightly fixed to the contact member through the wire pressing structure. Then, the shielding cylinder 5 is sleeved, and the shielding cylinder 5 is connected to the main housing 4. At this time, the wire pressing structure is located inside the shielding cylinder 5, so as to shield the wire pressing structure area by using the shielding cylinder 5. After the shielding contact portion of the shielding cylinder 5 is connected to the shielding layer 81 of the cable 8, the shielding layer 81 of the cable 8 will not contact the contact member inside the insulator 6. In this way, after the wire pressing structure operation is completed, the shielding cylinder 5 is sleeved to form a shield. Only one connection operation between the shielding cylinder 5 and the main housing 4 is required to complete the installation of the shielding cylinder 5, and the shielding cylinder 5 does not need to move after installation, which is beneficial to simplifying the installation structure, facilitating manufacturing and installation operations. Moreover, the shielding cylinder 5 can be used as a shielding member in the form of a cylinder while serving as a shielding member, forming a circumferential surrounding shield, which is beneficial to improving the shielding effect.

[0029] The shielding layer 81 is woven by metal wires, is relatively soft and annular. The radial dimension of the shielding cylinder 5 is larger. After the shielding layer 81 expands outward, it extends to the periphery of the shielding cylinder 5 near the tail end of the connector and is sleeved on a part of the shielding cylinder 5 near the tail end of the connector. Both the main housing 4 and the shielding cylinder 5 are used to form the shielding structure of the connector. The shielding layer 81 can be pressed against the shielding cylinder 5 through the outer sleeve 2 so that the main housing 4 is electrically connected to the shielding layer of the cable through the shielding cylinder 5.

[0030] The wire pressing portion of the insulator 6 is located on one side of the main body portion near the tail end of the connector. The insulator 6 is fixed in the main housing 4. The open cavity for setting the wire pressing structure of the insulator 6 is located in the wire pressing portion. The wire pressing portion of the insulator 6 extends out of the main housing 4 toward the side where the tail end of the connector is located. The shielding cylinder 5 penetrates along the head and tail direction of the connector. One end of the shielding cylinder 5 near the head of the connector is connected to the main housing 4, and one end near the tail of the connector allows the core 82 of the cable 8 to penetrate and extend into the open cavity of the insulator 6.

[0031] One end of the shielding cylinder 5 near the head of the connector is the connection end. The connection end is connected to the main housing 4. The main housing 4 is provided with a housing connection portion 41. The connection end of the shielding cylinder 5 is sleeved on the housing connection portion 41, which is convenient for connection operation by using the socket fit. In other embodiments, an annular slot can also be provided on the main housing, and the connection end of the shielding cylinder is inserted into the slot. In other embodiments, the shielding cylinder can also be threadedly connected to the main housing.

[0032] The inner wall of the connecting end of the shielding cylinder 5 is provided with a contact convex portion 51, and a plurality of contact convex portions 51 are provided along the circumferential direction. The outer peripheral surface of the shell connecting portion 41 of the main shell 4 is provided with a portion that is interference-fitted with the contact convex portion 51. The contact convex portion 51 cooperates with the outer peripheral surface of the shell connecting portion 41 to facilitate fixed and reliable contact. In other embodiments, a convex portion may also be provided on the outer peripheral surface of the shell connecting portion to form an interference fit with the inner wall surface of the connecting end of the shielding cylinder. In other embodiments, the convex portion may not be provided, and the outer peripheral surface of the shell connecting portion is directly pressed against the inner wall surface of the connecting end of the shielding cylinder to form an interference fit.

[0033] The main shell 4 is provided with a limiting contact surface 42, and the end surface of the shielding cylinder 5 connected to the main shell 4 abuts on the limiting contact surface 42. The limiting contact surface 42 is perpendicular to the center line of the connector. The limiting contact surface 42 is connected to the outer peripheral surface of the shell connecting part 41 to form a step structure. The connecting end of the shielding cylinder 5 is sleeved on the shell connecting part 41 and its end surface abuts on the limiting contact surface 42. The limiting contact surface 42 is used to limit the shielding cylinder 5 and increase the contact points. In other embodiments, the limiting contact surface may not be provided, and only the outer peripheral surface of the shell connecting part is used to form contact with the contact convex part on the inner wall of the shielding cylinder.

[0034] The outer sleeve 2 is sleeved on the outside of the shielding cylinder 5 and fixedly connected to the main shell 4. The main shell 4 is provided with a shoulder on one side of the shell connection part 41 close to the connector head, and an external thread is provided on the shoulder. The end of the outer sleeve 2 close to the connector head is provided with an internal thread to be threadedly connected to the shoulder. The inner wall of the outer sleeve 2 is provided with a pressing portion, and the pressing portion is an inner step structure. A clamping ring 9 is also installed in the outer sleeve 2 at the position of the pressing portion. The pressing portion of the outer sleeve 2 indirectly applies pressure to the shielding layer 81 of the cable 8 through the clamping ring 9. When the outer sleeve 2 is threadedly connected to the main shell 4, the outer sleeve 2 pushes the clamping ring 9, and the clamping ring 9 presses the shielding layer 81 on the shielding cylinder 5 and makes the shielding cylinder 5 press against the limit contact surface 42, which is conducive to ensuring reliable contact. In other embodiments, when the clamping force is not large, the clamping ring may not be provided, so that the pressing portion provided on the inner wall of the outer sleeve directly presses on the shielding layer. In other implementations, the shielding cylinder may be threadedly connected to the shell connection portion, and after the threaded connection is in place, the end surface of the shielding cylinder is abutted against the limiting contact surface.

[0035] The shielding cylinder 5 is spaced from the outer sleeve 2, and the shielding cylinder 5 does not contact the outer sleeve 2, so that the shielding layer 81 is sleeved on the shielding cylinder 5, which is conducive to reliable contact. In other embodiments, a convex portion can also be provided on the shielding cylinder, and the convex portion abuts against the inner wall of the outer sleeve. The space beside the convex portion on the outer circumference of the shielding cylinder is provided for the shielding layer to extend into. At this time, the portion of the shielding layer corresponding to the convex portion can be pushed aside to make way for the convex portion.

[0036] The shielding cylinder 5 is formed by curling a sheet. The shielding cylinder 5 is a stamping part, and the main housing 4 is a casting part. Both the main housing and the shielding cylinder are made of metal. Forming a cylinder structure by curling a sheet facilitates the manufacture of the shielding cylinder 5 and saves costs. The two ends in the curling direction of the sheet are fixedly connected, and the two ends of the sheet are butted to form a cylinder. Riveting can be used here to improve the strength of the shielding cylinder 5. In other embodiments, the shielding cylinder 5 can also be a casting part. In other embodiments, the two ends of the sheet forming the shielding cylinder may not be fixedly connected, as long as the shielding cylinder can be installed on the main housing.

[0037] The shielding contact part of the shielding cylinder 5 for contacting the shielding layer 81 includes an inclined surface provided at one end of the shielding cylinder 5 away from the main housing 4. This inclined surface is the contact inclined surface 52. The contact inclined surface 52 is a part of the outer surface of the shielding cylinder 5, and a part of the outer peripheral surface of the shielding cylinder 5 that is adjacent to the contact inclined surface 52 will also be in contact with the shielding layer 81. The pressing ring 9 can press the shielding layer 81 against the outer peripheral surface of the shielding cylinder 5 and the contact inclined surface 52. One end of the shielding cylinder 5 away from the main housing 4 is a necking structure to form the contact inclined surface 52, and the necking structure can be formed by stamping to make the port shrink inward. The pressing ring 9 is made of a non-metallic material and has a certain flexibility to avoid breaking the metal wires of the shielding layer 81. Using the contact inclined surface 52 to form contact can increase the contact reliability and is beneficial to avoiding the metal wires of the shielding layer 81 being broken by the sharp edges of the shielding cylinder 5. In other embodiments, an arc surface can also be used instead of the inclined surface. Correspondingly, the corresponding pressing and mating surface of the pressing ring is a matching arc surface. In other embodiments, when the pressing force is not large, the inclined surface or the arc surface may not be provided.

[0038] The main housing 4, insulator 6, contact member, connection nut 1 and wire pressing structure of this connector are fixedly installed together to form the main body part of the connector. This main body part does not need to be disassembled when wiring. After the cable 8 is connected, then the components at the tail of the connector such as the shielding cylinder 5, outer sleeve 2, and locking cap 3 are installed in place. The shielding cylinder 5 is installed outside the wire pressing structure to prevent foreign objects from entering the gap and at the same time achieve a 360° surrounding shielding effect.

[0039] Embodiment 2 of the connector of the present invention: The difference between the connector in this embodiment and the connector in the above Embodiment 1 lies in the structures of the shielding cylinder and the insulator. In this embodiment, the insulator is provided with a convex part, and the inner wall of the shielding cylinder is provided with a concave structure for avoiding the convex part on the insulator. Figure 6, an outer convex structure 53 is formed at a position on the outer wall of the shielding cylinder body 5 corresponding to the concave structure. The space beside the outer convex structure 53 on the periphery of the shielding cylinder body 5 is for the shielding layer of the cable to extend into. The space beside the outer convex structure 53 in the circumferential direction of the shielding cylinder body forms a placement space for the metal wires of the shielding layer, which can reduce the radial dimension of the shielding cylinder body and save the layout space. Since the shielding cylinder body is a stamping part formed by a sheet material, the concave structure can be formed by stamping a pit on one side of the sheet material, and the outer convex structure can be formed on the other side.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or make equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connector, characterized in that, It includes an insulator (6) and a main housing (4). A contact is provided inside the insulator. The insulator includes a main body portion fixed inside the main housing and a wire pressing portion extending outside the main housing. A wire pressing structure for pressing and fixing the wire core (82) of the cable (8) to the contact is installed on the wire pressing portion. The connector further includes a shielding cylinder body (5) that is separately connected and electrically connected to the main housing (4). The shielding cylinder body is sleeved outside the wire pressing portion to cover the wire pressing structure inside. A shielding contact portion for connecting with the shielding layer (81) of the cable (8) is provided on the outer surface of the shielding cylinder body (5).

2. The connector according to claim 1, characterized in that, The shielding cylinder body (5) has a connection end portion connected to the main housing (4). The main housing (4) is provided with a housing connection portion (41). The connection end portion of the shielding cylinder body (5) is sleeved on the housing connection portion (41).

3. The connector according to claim 2, characterized in that, A convex portion is provided on one of the inner wall of the connection end portion of the shielding cylinder body (5) and the outer peripheral surface of the housing connection portion (41), and a portion for interference fit with the convex portion is provided on the other.

4. The connector according to claim 1 or 2 or 3, characterized in that, The main housing (4) is provided with a limiting contact surface (42). The end surface of the shielding cylinder body (5) connected to the main housing (4) abuts against the limiting contact surface (42).

5. The connector according to claim 4, characterized in that, The connector includes an outer sleeve (2). The outer sleeve (2) is sleeved outside the shielding cylinder body (5) and fixedly connected to the main housing (4). The outer sleeve (2) is provided with a pressing portion for directly or indirectly applying pressure to the shielding layer (81) of the cable (8) so that the shielding layer (81) is pressed against the shielding contact portion of the shielding cylinder body (5) and the shielding cylinder body (5) is pressed tightly against the limiting contact surface (42).

6. The connector according to claim 1 or 2 or 3, characterized in that, The connector includes an outer sleeve (2). The outer sleeve (2) is sleeved outside the shielding cylinder body (5) and fixedly connected to the main housing (4). The outer sleeve (2) is used to directly or indirectly apply pressure to the shielding layer (81) of the cable (8) to press it against the shielding contact portion of the shielding cylinder body (5).

7. The connector according to claim 1 or 2 or 3, characterized in that, The shielding cylinder body (5) is formed by curling a sheet material.

8. The connector according to claim 7, characterized in that, Both ends in the curling direction of the sheet material are fixedly connected.

9. The connector according to claim 7, characterized in that, One end of the shielding cylinder body (5) away from the main housing (4) is a retracted closing structure to form an inclined surface or an arc surface. The shielding contact portion includes the inclined surface or the arc surface.

10. The connector according to claim 1 or 2 or 3, characterized in that, The inner wall of the shielding cylinder body (5) is provided with a concave structure for avoiding the convex portion on the insulator (6). An outward convex structure (53) is formed at the position corresponding to the concave structure on the outer wall of the shielding cylinder body (5). The space beside the outward convex structure (53) around the shielding cylinder body (5) is for the shielding layer (81) of the cable (8) to extend into.

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