A straight connector

Abstract

The application provides a straight connector, and belongs to the field of connecting devices.The straight connector comprises a shell, a signal contact component, an insulator and a shielding member, the shielding member is in a cylindrical shape, the shielding member comprises a main body part and a connecting part located at one end of the main body part, the insulator is separate from the shell and is fixedly arranged in the main body part of the shielding member, a cavity for accommodating a plug end of the signal contact component is arranged through the insulator, the insulator is used for insulating between the signal contact component and the shielding member, and the connecting part of the shielding member penetrates through the shell along the plug-in direction of the connector and is fixedly connected with the shell.The shielding member is arranged in a fully shielded cylindrical structure, the insulator is separated from the shell, and the insulator is fixed in the shielding member, so that better shielding effect can be obtained on the one hand, and the shell can be conveniently processed in a one-mold-multiple-cavity mode, and the production efficiency of the shell is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of connecting devices, in particular to a straight connector. BACKGROUND

[0002] The straight connector generally comprises a housing and a terminal module mounted on the housing, each terminal module comprising an insulator and a conductive terminal fixed in the insulator. The backplate connector disclosed in the Chinese Utility Model Patent with the publication number CN212849126U belongs to the straight connector. The backplate connector comprises a housing, the base of the housing integrally extends an insulating protrusion (i.e. the insulator), and the conductive terminal is mounted in the insulating protrusion.

[0003] The backplate connector described above further comprises a shielding member, the upper part of the shielding member is in a cylindrical shape, and the lower part is in a C-shaped structure with one side open. The shielding member is sleeved outside the insulating protrusion and plays an electromagnetic shielding role on the conductive terminal in each insulating protrusion. A C-shaped positioning groove is provided on the base of the housing around the insulating protrusion, and the lower part of the shielding member is inserted into the positioning groove to ensure the stability of the shielding member.

[0004] In the actual production process, in order to improve the production efficiency of the housing, a mold is generally used to injection mold multiple housings at a time, but this method needs more precise control of the injection pressure and temperature during injection molding, otherwise the molding quality of the weak part on the housing will be poor. The positioning groove weakens the connection strength between the insulating protrusion and the base of the housing, making the connection part between the insulating protrusion and the base of the housing relatively weak, and multiple housings injection molded at a time are prone to quality problems, so in order to ensure the molding quality, the number of housings injection molded at a time by one mold should be minimized, which seriously affects the production efficiency.

[0005] The lower part of the shielding member is in a C-shaped structure with one side open, which is to enable the insulating protrusion and the base of the housing to be integrally connected, but this open part will cause the shielding effect to be poor. Especially when the signal transmission rate is high, the crosstalk between the pairs of conductive terminals transmitting differential signals will be more obvious, and the open structure described above will also have a more serious impact on signal transmission, so more comprehensive shielding is needed to meet the use requirements of high-speed signal transmission. SUMMARY

[0006] The purpose of the present application is to provide a straight connector to solve the technical problems of the prior art that the straight connector is difficult to injection mold multiple housings at a time by one mold, resulting in low production efficiency, and the shielding member cannot form comprehensive shielding.

[0007] To achieve the above-mentioned purpose, the technical scheme of the straight connector provided by the present application is as follows:

[0008] A straight connector comprises a housing, a signal contact component, an insulator and a shield, the shield is a cylindrical structure, the shield comprises a main body and a connecting part at one end of the main body, the insulator is separate from the housing and fixedly arranged in the main body of the shield, a cavity for accommodating a plug end of the signal contact component is arranged in the insulator, the insulator is used for insulating between the signal contact component and the shield, the connecting part of the shield penetrates the housing along the plug direction of the connector and is fixedly connected with the housing.

[0009] As a further improvement, the connecting part of the shield is provided with at least two openings for dividing the connecting part into at least two parts, and the housing is provided with a mounting hole or a mounting slot for inserting and interference fitting at least part of the connecting part.

[0010] As a further improvement, the shield is a rectangular cylindrical structure, and the connecting part is provided with an opening at each corner.

[0011] As a further improvement, the part of the connecting part is provided with a protruding structure for tightly fitting with the inner wall of the mounting hole or the mounting slot to enhance the connection strength of the corresponding part of the connecting part and the housing.

[0012] As a further improvement, the housing is provided with an assembly hole for the signal contact component to pass through, the signal contact component comprises an insulating positioning body and a contact fixed on the insulating positioning body, the insulating positioning body comprises an assembly part and a positioning part, the assembly part is inserted into the assembly hole, and at least part of the edge of the positioning part protrudes from the assembly part to form a positioning step surface which is stop-fitted with the housing between the positioning part and the assembly part.

[0013] As a further improvement, the straight connector further comprises a positioning plate, the housing comprises a counter-plug end for counter-plug with an adapter connector and a mounting end for mounting to a printed board, the positioning plate is arranged at the mounting end of the housing, the positioning plate is provided with a positioning hole corresponding to the assembly hole, and the positioning part is inserted into the positioning hole.

[0014] As a further improvement, the two parallel parts of the connecting part are second parts, the two second parts are located in the positioning hole and tightly fit with the opposite two hole walls of the positioning hole respectively, and the positioning part is located between the two second parts and tightly fits with the two second parts and the remaining hole walls of the positioning hole.

[0015] As a further improvement, the hole wall for fitting with the part of the connecting part comprises a flat part and a protruding part, and the protruding part tightly fits with the corresponding part of the connecting part.

[0016] As a further improvement, the shell is provided with an assembly hole through which the signal contact component passes, the two second parts of the connecting part are parallel to each other, and the two second parts are located in the assembly hole and tightly fit with the two side walls of the assembly hole opposite to each other, the signal contact component comprises an insulating positioning body and a contact piece fixed on the insulating positioning body, the insulating positioning body is inserted into the assembly hole and located between the two second parts, and the insulating positioning body tightly fits with the two second parts and the remaining hole wall of the assembly hole.

[0017] As a further improvement, the straight connector further comprises a positioning plate, the shell comprises a mating end for mating with an adapter connector and a mounting end for mounting to a printed board, the positioning plate is arranged at the mounting end of the shell, and the positioning plate is a conductor and is in contact with each shielding member.

[0018] As a further improvement, the positioning plate is a conductive plastic or a plastic plate with a conductive layer on the outer surface, a grounding sheet is arranged on the side of the positioning plate away from the shell, the grounding sheet is provided with a grounding protrusion for grounding with the printed board, and the grounding sheet is in conduction with the positioning plate.

[0019] As a further improvement, the shielding member is provided with an adjusting opening for adjusting impedance.

[0020] As a further improvement, the shielding member is provided with a deformation opening corresponding to the plug-in end of the signal contact component for the plug-in end to expand and deform, and the insulating body is provided with a corresponding opening corresponding to the deformation opening.

[0021] The straight connector provided by the application belongs to an invention and creation of element relationship change type. Compared with the prior art, the shielding member is arranged in a full-shielding cylindrical structure, so that a better shielding effect can be obtained; meanwhile, the insulating body is separated from the shell and fixedly arranged in the shielding member, so that the structure of the shell is simplified, the shell can be suitable for a one-mold multi-cavity production mode, and the production efficiency of the shell is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is an exploded view of the whole of the straight connector of embodiment 1 in the application;

[0023] Figure 2 It is a structural schematic view of the shielding member and the insulating body in embodiment 1 of the straight connector in the application;

[0024] Figure 3 It is an exploded view of the shielding member and the insulating body in embodiment 1 of the straight connector in the application;

[0025] Figure 4 It is a structural schematic view of the signal contact component in embodiment 1 of the straight connector in the application;

[0026] Figure 5 This is a partial structural diagram of the housing in Embodiment 1 of the straight connector of the present invention;

[0027] Figure 6 This is a partial structural diagram of the positioning plate in Embodiment 1 of the straight connector of the present invention;

[0028] Figure 7 This is a partial structural diagram of the grounding plate in Embodiment 1 of the straight connector of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Housing; 11. Base; 12. Side plate; 13. Mounting hole; 14. Assembly hole; 15. Boss; 16. Groove; 17. Mounting slot; 2. Signal contact component; 21. Insulating positioning body; 211. Assembly part; 212. Positioning part; 213. Positioning step surface; 22. Contact element; 221. Plug-in end; 222. Signal fisheye; 3. Insulator; 31. Corresponding window; 4. Shielding component; 41. Main body; 42. Connecting part; 43. Notch; 44. First part; 45. Second part; 46. Grounding fisheye; 47. Protruding structure; 48. Deformation window; 49. Adjustment window; 5. Positioning plate; 51. Positioning insertion hole; 52. Positioning hole; 521. Protrusion; 522. Flat part; 6. Grounding piece; 61. Opening; 62. Grounding protrusion; 63. Connecting protrusion. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the embodiments.

[0032] To address the problems in the prior art, the basic concept of this invention is to set the shielding component as a fully shielded cylindrical structure, while separating the insulator from the shell and fixing the insulator inside the shielding component.

[0033] Specific embodiment 1 of the straight connector provided by the present invention:

[0034] A straight connector, see appendix. Figure 1 It includes a housing 1, a signal contact component 2, an insulator 3, a shield 4, a positioning plate 5, and a grounding plate 6. When in use, this straight connector needs to be installed on a printed circuit board.

[0035] The housing 1 is an insulating shell made of plastic. The housing 1 includes a base 11 and two side plates 12. One end of the base 11 in the thickness direction faces the printed circuit board, and the other end faces away from the printed circuit board. The two side plates 12 are located on opposite sides of the end of the base 11 facing away from the printed circuit board. The portion between the two side plates 12 forms a mating cavity for the insertion of a mating connector. The end of the base 11 facing the printed circuit board is the mounting end of the housing 1, and the end of the side plate 12 away from the base 11 is the mating end of the housing 1.

[0036] Referring to the drawings Figure 2 The shielding member 4 is a rectangular cylindrical structure, comprising a main body part 41 and a connecting part 42 located at one end of the main body part 41, the main body part 41 is located in the insertion cavity, and the connecting part 42 penetrates the base 11 of the shell 1 and is fixedly connected with the base 11.

[0037] Referring to the drawings Figure 3 A cavity for accommodating the plug end 221 of the signal contact part 2 is provided in the insulation body 3 along the plug-in direction, and the plug-in direction in the present application refers to the direction of plugging and unplugging when the straight connector is connected with the adapter connector. The insulation body 3 is fixedly arranged in the main body part 41 of the shielding member 4, and the specific fixing mode can be assembly fixing, or can be integrally connected by gluing or injection molding. Specifically, the assembly fixing mode can be interference assembly, or a limiting protrusion protruding inward can be processed on the shielding member 4, and a groove 16 matched with the limiting protrusion is processed on the insulation body 3. After the insulation body 3 is assembled in the shielding member 4, the limiting protrusion and the groove 16 can be limited and fixed in the plug-in direction.

[0038] Four notches 43 are arranged around the connecting part 42 of the shielding member 4, and the four notches 43 are respectively located at the four corners of the connecting part 42. The four notches 43 divide the connecting part 42 of the shielding member 4 into four parts, wherein the opposite and narrower two parts are the first part 44, and the opposite and wider two parts are the second part 45. The first part 44 is formed with a grounding fish eye 46 for grounding conduction with the printed board. The two side walls of each notch 43, that is, the two ends of each part in the direction around the shielding member 4 are provided with a protruding structure 47, which has a semicircular shape, a trapezoidal shape, etc. In the assembly process, the protruding structure 47 is in close contact with the corresponding hole wall on the shell 1 and the positioning plate 5, and is embedded into the corresponding hole wall by deforming the hole wall through extrusion, so as to ensure the stability and reliability of the shielding member 4.

[0039] Referring to the drawings Figure 5 Two mounting holes 13 are arranged on the shell 1 at positions corresponding to each shielding member 4, and an assembly hole 14 is further arranged between the two mounting holes 13. The two first parts 44 of the connecting part 42 are respectively inserted and assembled in the two mounting holes 13, and the two second parts 45 of the connecting part 42 are both inserted and assembled in the assembly hole 14, and the two second parts 45 are in close fit with the opposite two side walls of the assembly hole 14. The assembly hole 14 is used for the second part 45 to pass through the shell 1 and assemble with the shell 1, and is also used for the signal contact part 2 to pass through.

[0040] Referring to the drawings Figure 4The signal contact component 2 comprises an insulating positioning body 21 and a contact piece 22 fixed on the insulating positioning body 21, the contact piece 22 is used for transmitting differential signals, and the insulating positioning body 21 is connected with the contact piece 22 in an integral injection molding mode. The insulating positioning body 21 comprises an assembling part 211 and a positioning part 212, wherein the assembling part 211 is inserted into the assembling hole 14 from the mounting end of the shell 1, and the partial edge of the positioning part 212 protrudes from the assembling part 211, so that the positioning part 212 and the assembling part 211 form a positioning step surface 213 which is in abutting fit with the shell 1 in the plug-in direction of the adapter connector.

[0041] The two side walls of the assembling hole 14 which are not matched with the second sub-body 45 are provided with bosses 15, the bosses 15 are provided with grooves 16 on the top surfaces, so that the bosses 15 are in C shape, and the bosses 15 and the side wall of the assembling hole 14 which is used for matching with the second sub-body 45 form mounting grooves 17 which make the second sub-body 45 reliably assembled. The shape of the assembling part 211 is adapted to the shape of the space surrounded by the two bosses 15 and the second sub-body 45, and the assembling part 211 is tightly matched with the bosses 15 and the second sub-body 45.

[0042] The positioning plate 5 is located at the mounting end of the shell 1, and the mounting end of the shell 1 is provided with an embedding groove, and the positioning plate 5 is embedded in the embedding groove. After the signal contact component 2 is assembled, the positioning plate 5 is assembled on the shell 1. Referring to the drawings, Figure 6 The positioning plate 5 is provided with two positioning insertion holes 51 and a positioning hole 52 between the two positioning insertion holes 51 corresponding to each shielding piece 4, the two first sub-bodies 44 on the shielding piece 4 pass through the two positioning insertion holes 51 and are tightly matched with the hole walls of the positioning insertion holes 51 respectively, and the two second sub-bodies 45 on the shielding piece 4 pass through the positioning hole 52 and are tightly matched with the opposite two side walls of the positioning hole 52 respectively. The positioning part 212 on the insulating positioning body 21 is inserted into the positioning hole 52 and is tightly matched with the other two side walls of the positioning hole 52 and the two second sub-bodies 45.

[0043] The positioning plate 5 can stabilize the shielding pieces 4 and the signal contact component 2, and in the embodiment, the positioning plate 5 is a conductor, so it can also play a role of electromagnetic shielding. The positioning plate 5 can be a metal conductor, a conductive plastic, or a plastic plate provided with a conductive layer on the outer surface. In order to facilitate assembly, the plastic plate provided with a conductive layer on the outer surface is selected as the positioning plate 5 in the embodiment, and the conductive layer can be processed by electroplating or spraying.

[0044] The positioning plate 5 is in contact with each shielding member 4, and thus the grounding of the positioning plate 5 can realize the grounding of each shielding member 4, and the positioning plate 5 itself can play the role of electromagnetic shielding, further improving the shielding effect. The side wall of the positioning hole 52 matched with the second part 45 includes a flat part 522 and a protruding part 521, wherein the protruding part 521 is matched with the corresponding second part 45, and the protruding part 521 can be a protruding strip or a protruding point. During assembly, the protruding part 521 is more easily deformed under pressure, thereby maintaining better conductive contact with the second part 45, and also avoiding large friction during assembly, facilitating assembly.

[0045] The positioning plate 5 can be directly in contact with the ground conductor on the printed board to realize grounding, but the direct contact has poor conductive effect, and thus a protruding structure can be arranged on the positioning plate 5 to contact the ground conductor. In order to further improve the grounding effect, a grounding sheet 6 can be arranged on the side of the positioning plate 5 away from the shell 1, and the grounding sheet 6 is a metal sheet, which is used to realize electrical connection between the positioning plate 5 and the ground conductor.

[0046] Referring to FIG. 1, Figure 7 The grounding sheet 6 is provided with an opening 61 for the signal contact component 2 and the shielding member 4 to pass through, and the grounding sheet 6 is provided with a grounding protrusion 62 on the side facing the printed board. Specifically, the grounding protrusion 62 is a spring claw, which realizes elastic contact with the ground conductor on the printed board, improving the reliability of grounding. In other embodiments, the grounding protrusion 62 can also be a non-elastic structure. The grounding sheet 6 is provided with a connecting protrusion 63 on the side facing the positioning plate 5, and a connecting insertion hole is arranged on the positioning plate 5 corresponding to the connecting protrusion 63. The connecting protrusion 63 is inserted and matched with the connecting insertion hole, realizing mechanical connection and electrical connection between the positioning plate 5 and the grounding sheet 6. In other embodiments, the positioning plate 5 and the grounding sheet 6 can be formed as an integral structure by one-piece injection molding.

[0047] Both ends of the contact piece 22 of the signal contact component 2 are exposed to the insulating positioning body 21, wherein one end of the contact piece 22 inserted into the insulating body 3 is a double spring structure, and the plug pin on the adapter connector can be inserted between the double springs to realize conductive connection, and the double springs constitute the insertion end 221 of the signal contact component 2. During the insertion, the double springs will be deformed outwardly under the extrusion of the plug pin. The other end of the contact piece 22 is formed with a signal fish eye 222 for mounting on the printed board. The shielding member 4 is provided with a deformation window 48 corresponding to the insertion end 221 of the signal contact component 2, so as to reduce the resistance of the insertion end 221 to deform outwardly. The insulating body 3 is provided with a corresponding window 31 corresponding to the deformation window 48, so as to reduce the deformation resistance of the insertion end 221 of the signal contact component 2.

[0048] An adjusting opening 49 is further arranged on the shielding member 4 for adjusting impedance, and the adjusting opening 49 is arranged on one side of the deformation opening 48 close to the base 11 of the shell 1. The shielding member 4 is formed by rolling a metal plate, and a dovetail groove structure capable of enabling the two side edges to be pressed and riveted to each other is arranged at the joint of the rolling. The adjusting opening 49 and the deformation opening 48 are both arranged on the side of the shielding member 4 away from the joint.

[0049] The assembling process of the straight connector is as follows: firstly, the insulator 3 and the shielding member 4 are fixed together, then the whole component formed by the insulator 3 and the shielding member 4 is assembled to the shell 1 from the opposite end of the shell 1, then the signal contact component 2 is assembled to the shell 1 from the opposite end of the shell 1, and then the positioning plate 5 and the grounding sheet 6 are assembled in sequence. After all the components are assembled, the straight connector can be installed on the printed board. In order to facilitate the assembly, the two end ports of the positioning hole 52 and the mounting hole 13 are all provided with chamfers, and the two ends of the insulating positioning body 21 of the signal contact component 2 are also provided with chamfers, and the ports of the holes on the positioning plate 5 are all provided with chamfers.

[0050] The straight connector separates the insulator 3 from the shell 1, so that the structure of the shell 1 is simpler, and the weak part of the shell 1 is reduced, thereby the number of the shell 1 formed by one mold in one injection molding process can be increased, and in the actual production process, 32 holes can be realized in one mold, while in the prior art, 4 holes in one mold are difficult to realize, so that the production efficiency is greatly improved.

[0051] Moreover, the shielding member 4 of the straight connector adopts a full-range shielding design, which greatly enhances the shielding effect and is beneficial to the transmission of high-speed signals. Moreover, after the opening 43 is arranged on the connecting portion 42 of the shielding member 4, the contact area of the connecting portion 42 and the shell 1 can be increased, the connecting strength of the shielding member 4 and the shell 1 is ensured to be high, and the service life of the straight connector is ensured to be long.

[0052] Moreover, the second part 45 on the shielding member 4 and the insulating positioning body 21 on the signal contact component 2 share one assembling hole 14 on the shell 1, and the second part 45 on the shielding member 4 and the insulating positioning body 21 on the signal contact component 2 share one positioning hole 52 on the positioning plate 5, so that the structure of the straight connector is compact, and the miniaturization of the size is beneficial.

[0053] The specific embodiment 2 of the straight connector provided by the present application is as follows:

[0054] The embodiment is based on the embodiment 1, and the difference between the embodiment 1 and the embodiment is that no opening is arranged on the shielding member in the embodiment, and therefore through holes for the shielding member to pass through are arranged on the shell, the positioning plate and the grounding sheet, and the hole walls of the through holes on the shell and the positioning plate are in close contact with the shielding member, so that the shielding member is fixed.

[0055] The shielding member in the embodiment does not have an opening, and has stronger electromagnetic shielding capability.

[0056] The signal contact member in the embodiment is assembled into the shielding member first, so that the signal contact member, the shielding member and the insulator form an integral component, and the integral component is assembled onto the shell.

[0057] In other embodiments of the embodiment, the insulating positioning body of the signal contact member and the insulator can be integrally injection molded, so as to reduce the number of parts. The signal contact member, the insulator and the shielding member can be integrally injection molded, so as to further reduce the number of parts and improve the assembly efficiency.

[0058] Specific embodiment 3 of the straight connector provided by the application:

[0059] The embodiment is based on embodiment 1, and differs from embodiment 1 in that the shielding member in the embodiment is fixedly connected with the shell by integrally injection molding.

[0060] Specific embodiment 4 of the straight connector provided by the application:

[0061] The embodiment is based on embodiment 1, and differs from embodiment 1 in that the shielding member in the embodiment is a cylindrical structure, and the opening is provided with two halves, so that the connecting part of the shielding member is two semicircular halves.

[0062] In the embodiment, two through holes for the two halves of the connecting part of the shielding member to pass through are provided on the shell and the positioning plate and the grounding sheet, and the through holes are arc-shaped holes with shapes adapted to the halves, and the hole walls of the through holes on the shell and the positioning plate are in close contact with the shielding member, so that the shielding member is fixed.

[0063] In the embodiment, the assembly hole on the shell for mounting the signal contact member is located between the two through holes on the shell, and the positioning hole on the positioning plate for positioning the signal contact member is located between the two through holes on the positioning plate.

[0064] Finally, it should be noted that the above description is only for the preferred embodiments of the application, and is not intended to limit the application. Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments without creative labor, or replace some technical features with equivalent ones. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A straight connector characterized by, The straight connector comprises a shell (1), a signal contact component (2), an insulator (3) and a shield (4). The shield (4) is in a cylindrical shape. The shield (4) comprises a main body portion (41) and a connecting portion (42) at one end of the main body portion (41). The insulator (3) is separate from the shell (1) and fixedly arranged in the main body portion (41) of the shield (4). A cavity is arranged through the insulator (3) to accommodate a plug end (221) of the signal contact component (2). The insulator (3) is used for insulation between the signal contact component (2) and the shield (4). The connecting portion (42) of the shield (4) penetrates the shell (1) along the connector plug direction and is fixedly connected with the shell (1). The connecting portion (42) of the shield (4) is provided with at least two openings (43) for dividing the connecting portion (42) into at least two parts. The shell (1) is provided with a mounting hole (13) or a mounting slot (17) for inserting and interference fitting at least part of the connecting portion (42).

2. The straight connector of claim 1, wherein The shield (4) is in a rectangular cylindrical structure. The openings (43) are arranged at each corner of the connecting portion (42).

3. A straight connector according to claim 1 or 2, characterised in that The parts of the connecting portion (42) are provided with a protruding structure (47) for tightly fitting with the inner wall of the mounting hole (13) or the mounting slot (17) to enhance the connection strength between the parts of the connecting portion (42) and the shell (1).

4. The straight connector according to claim 1 or 2, characterized by The shell (1) is provided with an assembly hole (14) for the signal contact component (2) to pass through. The signal contact component (2) comprises an insulating positioning body (21) and a contact piece (22) fixed on the insulating positioning body (21). The insulating positioning body (21) comprises an assembly portion (211) and a positioning portion (212). The assembly portion (211) is inserted and assembled in the assembly hole (14). At least part of the edge of the positioning portion (212) protrudes from the assembly portion (211) to form a positioning step surface (213) between the positioning portion (212) and the assembly portion (211) for stop fitting with the shell (1).

5. The straight connector of claim 4, wherein, The straight connector further comprises a positioning plate (5). The shell (1) comprises a mating end for mating with a mating connector and a mounting end for mounting to a printed board. The positioning plate (5) is arranged at the mounting end of the shell (1). The positioning plate (5) is provided with a positioning hole (52) corresponding to the assembly hole (14). The positioning portion (212) is inserted and assembled in the positioning hole (52).

6. The straight connector of claim 5, wherein, The two parallel parts of the connecting portion (42) are second parts (45). The two second parts (45) are located in the positioning hole (52) and tightly fit with the opposite two hole walls of the positioning hole (52) respectively. The positioning portion (212) is located between the two second parts (45) and tightly fits with the two second parts (45) and the remaining hole walls of the positioning hole (52).

7. The straight connector of claim 6, wherein, The hole walls of the positioning hole (52) for fitting with the parts of the connecting portion (42) comprise a flat portion (522) and a protruding portion (521). The protruding portion (521) tightly fits with the corresponding part of the connecting portion (42).

8. The straight connector according to claim 1 or 2, characterized by The shell (1) is provided with an assembly hole (14) through which the signal contact component (2) passes, two second parts (45) of the connecting part (42) are parallel to each other, the two second parts (45) are located in the assembly hole (14) and are tightly fitted with two side walls of the assembly hole (14) respectively, the signal contact component (2) comprises an insulating positioning body (21) and a contact piece (22) fixed on the insulating positioning body (21), the insulating positioning body (21) is inserted and assembled in the assembly hole (14) and is located between the two second parts (45), and the insulating positioning body (21) is tightly fitted with the two second parts (45) and the remaining hole wall of the assembly hole (14).

9. The straight connector according to claim 1 or 2, characterized by The straight connector further comprises a positioning plate (5), the shell (1) comprises a mating end for mating with an adapter connector and a mounting end for being mounted to a printed board, the positioning plate (5) is arranged at the mounting end of the shell (1), and the positioning plate (5) is a conductor and is in contact and conduction with each shielding piece (4).

10. The straight connector of claim 9, wherein, The positioning plate (5) is a conductive plastic plate or a plastic plate with a conductive layer on an outer surface, a grounding sheet (6) is arranged on a side of the positioning plate (5) away from the shell (1), a grounding protrusion (62) for grounding conduction with the printed board is arranged on the grounding sheet (6), and the grounding sheet (6) is in conduction with the positioning plate (5).

11. The straight connector of claim 1 or 2, wherein The shielding piece (4) is provided with an adjusting opening (49) for adjusting impedance.

12. The straight connector of claim 1 or 2, wherein The shielding piece (4) is provided with a deformation opening (48) corresponding to a plug-in end (221) of the signal contact component (2) for deformation of the plug-in end (221) to expand outward, and the insulating body (3) is provided with a corresponding opening (31) corresponding to the deformation opening (48).

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