Electric connector

Abstract

The utility model provides an electric connector, which comprises a shell with an installation cavity, a tubular shielding conductor inserted in the installation cavity, an insulator inserted in an inner cavity of the shielding conductor and provided with an insertion cavity, and a contact pin inserted in the insertion cavity, the pin and the shielding conductor are coaxially arranged, and the housing and the shielding conductor, the shielding conductor and the insulator, and the insulator and the pin are fixedly connected through glue injection. According to the electric connector provided by the utility model, the space among the parts can be filled by utilizing the fluidity of the glue, and the step positioning among the parts is combined, so that the parts can be bonded and fixed after the glue is cured, and the air tightness requirement can be met, thereby improving the sealing and isolating effects of the electric connector.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, in particular to an electrical connector. Background Art

[0002] With the development of automobile intelligence, cameras are increasingly used in automobiles. Among them, high-speed connectors are one of the important components for camera signal transmission, and the airtightness of high-speed connectors is usually achieved by sealing rings or sealants. However, the sealing performance of the existing high-speed connectors depends on the compression amount. When the air pressure is high, if the compression amount of the sealing ring is not enough or the sealing ring is aged, the seal is prone to failure, and it is difficult to ensure stable airtightness requirements, which is not conducive to the stable use of high-speed connectors and the improvement of the intelligent quality of the whole vehicle. Utility Model Content

[0003] In view of this, the utility model aims to provide an electrical connector to improve the sealing and isolation effect of the electrical connector.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] An electrical connector comprises a shell having an installation cavity, a tubular shielded conductor inserted in the installation cavity, an insulator inserted in the inner cavity of the shielded conductor and having an insertion cavity, and a pin inserted in the insertion cavity; the pin and the shielded conductor are coaxially arranged, and the shell and the shielded conductor, the shielded conductor and the insulator, and the insulator and the pin are all fixedly connected by glue injection.

[0006] Furthermore, a boss is formed in the middle of the outer cylindrical surface of the shielding conductor, and along the insertion direction of the shielding conductor, the installation cavity includes an insertion section, a mating section and a glue injection section arranged in sequence; the radial dimension of the mating section is smaller than the radial dimension of the insertion section and the glue injection section, and a first step for blocking the boss is formed between the insertion section and the mating section, and a first glue injection cavity for injecting colloid is formed between the glue injection section and the shielding conductor.

[0007] Furthermore, the insertion section includes a first section, a transition section and a second section arranged in sequence along the insertion direction of the shielded conductor, the radial dimension of the first section is larger than the radial dimension of the second section, and the transition section is arranged to transition between the first section and the second section with gradually increasing radial dimensions.

[0008] Furthermore, the outer cylindrical surface of the shielding conductor is divided into a lower part of the outer cylindrical surface and an upper part of the outer cylindrical surface by the boss; as the shielding conductor is inserted into place, the lower part of the outer cylindrical surface enters the insertion section, and the upper part of the outer cylindrical surface is tightly attached to the inner wall of the mating section and enters the injection section, and a first groove is provided on the upper part of the outer cylindrical surface corresponding to the injection section; the first groove, the step between the injection section and the mating section, and the injection section together constitute the first injection cavity.

[0009] Furthermore, one end of the injection section away from the matching section is formed with a chamfer, and the first groove is arranged on the inner wall of the injection section corresponding to the inner side of the chamfer.

[0010] Furthermore, along the insertion direction of the insulator, the outer cylindrical surface of the insulator includes a lower outer cylindrical section and an outer cylindrical main section which are arranged in sequence, the radial dimension of the lower outer cylindrical section is larger than the radial dimension of the outer cylindrical main section, and a second step is formed between the lower outer cylindrical section and the outer cylindrical main section; the inner cavity includes a lower inner cavity portion, a middle inner cavity portion and an upper inner cavity portion which are arranged in sequence, the radial dimension of the middle inner cavity portion is smaller than the radial dimension of the lower inner cavity portion and the upper inner cavity portion, and a third step for blocking the second step is formed between the middle inner cavity portion and the lower inner cavity portion, and a fourth step is formed between the middle inner cavity portion and the upper inner cavity portion; the upper inner cavity portion, the fourth step and the outer cylindrical main section jointly constitute a second injection cavity for injecting colloid.

[0011] Furthermore, as the insulator is inserted into place, the outer cylindrical main body section is tightly attached to the inner wall of the middle part of the inner cavity and enters the upper part of the inner cavity, and a second groove is opened on the outer cylindrical main body section near the fourth step; the second groove constitutes a part of the second injection cavity.

[0012] Furthermore, a gluing section having a radial dimension greater than that of the needle body is provided on the needle body of the plug pin, and a third groove is provided on the gluing section; the plug pin is inserted into the insertion cavity in the insertion direction facing away from the insulator, and along the insertion direction of the plug pin, the insertion cavity includes an upper section and a middle section of the insertion cavity which are sequentially arranged; the radial dimension of the upper section of the insertion cavity is greater than the radial dimension of the middle section of the insertion cavity, and a fifth step for blocking the gluing section is formed between the upper section of the insertion cavity and the middle section of the insertion cavity; a third glue injection cavity for injecting glue is formed between the upper section of the insertion cavity and the third groove.

[0013] Furthermore, the third groove portion is located outside the upper section of the insertion cavity, and the colloid injected into the second and third injection cavities between the pin and the inner wall of the inner cavity submerges the end of the insulator, thereby connecting and fixing the insulator, the shielding conductor and the pin together.

[0014] Furthermore, a fitting section is provided in the middle portion of the needle body and is adjacent to the gluing section. The fitting section is located on the side of the gluing section close to the insertion end of the pin, and a sixth step is formed between the fitting section and the gluing section to cooperate with the fifth step. The fitting section is inserted into the middle section of the insertion cavity, tightly against the inner wall of the middle section of the insertion cavity.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The electrical connector described in the utility model can fill the spaces between the components by injecting glue between the housing and the shielded conductor, between the shielded conductor and the insulator, and between the insulator and the pin, and can utilize the fluidity of the glue to fill the spaces between the components. Combined with the step positioning between the components, after the glue is cured, the components are bonded and fixed together, which is also conducive to meeting the airtightness requirements, thereby improving the sealing and isolation effect of the electrical connector.

[0017] In addition, the matching arrangement of the boss and the first step can limit the displacement of the shielded conductor relative to the shell along its own insertion direction. At the same time, the arrangement of the first glue injection cavity can provide for filling with sufficient glue and firmly bonding the shielded conductor and the shell, and limit the displacement of the shielded conductor relative to the shell in the direction away from its own insertion direction. The transition section is gradually set to transition between the first section and the second section with a gradually larger radial dimension, which is conducive to guiding the shielded conductor to be inserted in place. The first groove is provided to increase the filling amount of glue and improve the bonding stability. The first glue injection cavity is formed by the first groove, the step between the glue injection section and the matching section, and the glue injection section, which can increase the colloid filling amount and help ensure air tightness.

[0018] Secondly, the chamfer is convenient for glue injection. The second glue injection cavity is convenient for effective bonding between the insulator and the shielded conductor. The cooperation of the second step and the third step can avoid glue overflow between the insulator and the shielded conductor when the glue is filled. At the same time, the glue injected into the second glue injection cavity can limit the displacement of the insulator relative to the shielded conductor in the direction of its own insertion. The cooperation of the second step and the third step can limit the displacement of the insulator relative to the shielded conductor along its own insertion direction.

[0019] In addition, the second groove constitutes a part of the second glue injection cavity, which is conducive to increasing the amount of glue injection and ensuring the bonding strength and sealing reliability. The setting of the fifth step can limit the displacement of the pin relative to the insulator along its own insertion direction. At the same time, the setting of the third glue injection cavity is conducive to ensuring the bonding reliability between the pin and the insulator, and limiting the displacement of the pin relative to the insulator in the insertion direction away from itself. The glue injected into the second glue injection cavity and the third glue injection cavity submerges the ends of the insulator and connects them together, which is conducive to saving the glue injection process and improving the glue injection efficiency. The fifth step and the sixth step are matched with each other, and the fitting section is close to the inner wall of the middle section of the insertion cavity, which helps to avoid glue overflow between the pin and the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention. The directional terms such as front and back, top and bottom involved therein are only used to indicate relative positional relationships and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the electrical connector according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the insulator according to an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the shielding conductor according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the housing according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the plug pin according to an embodiment of the utility model;

[0026] Description of reference numerals:

[0027] 1. Insulator; 11. Eighth step; 12. Lower section of outer cylinder; 13. Second step; 14. Main section of outer cylinder; 15. Second groove; 16. Upper section of insertion cavity; 17. Fifth step; 18. Middle section of insertion cavity; 19. Lower section of insertion cavity;

[0028] 2. Shielded conductor; 21. Lower part of outer cylinder; 22. Boss; 23. Upper part of outer cylinder; 24. First groove; 25. Upper part of inner cavity; 26. Middle part of inner cavity; 27. Lower part of inner cavity; 28. Third step; 29. ​​Fourth step;

[0029] 3. Shell; 31. First section; 32. Transition section; 33. Second section; 34. First step; 35. Fitting section; 36. Chamfer; 37. Glue injection section;

[0030] 4. Insertion needle; 41. Needle body; 42. Seventh step; 43. Fitting section; 44. Sixth step; 45. Third groove; 46. Gluing section;

[0031] 5. The first glue injection cavity; 6. The second glue injection cavity; 7. The third glue injection cavity. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] In the description of the present invention, it should be stated that if there are terms indicating directions or positional relationships such as "up, down, left, right, front, back, inside, outside", etc., they are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0034] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0036] The present embodiment relates to an electrical connector, which can improve the sealing and isolation effect of the electrical connector and solve the problem that the sealing of the existing electrical connector is prone to failure.

[0037] In terms of overall structure, Figures 1 to 5 As shown, the electrical connector includes a housing 3 having a mounting cavity, a tubular shielded conductor 2 inserted in the mounting cavity, an insulator 1 inserted in the inner cavity of the shielded conductor 2 and having an insertion cavity, and a pin 4 inserted in the insertion cavity.

[0038] Secondly, the pin 4 and the shielded conductor 2 are coaxially arranged, and the housing 3 and the shielded conductor 2, the shielded conductor 2 and the insulator 1, and the insulator 1 and the pin 4 are all fixedly connected by glue injection.

[0039] It can be understood that in this embodiment, the shell 3, the shielding conductor 2, the insulator 1 and the pin 4 are fixedly connected by glue injection, and the fluidity of the glue (i.e., the colloid) can be used to fill the space between the components. Combined with the positioning structures such as steps and grooves between the components, after the glue is cured, the components can be firmly bonded and fixed together, thereby ensuring airtightness, thereby achieving the purpose of improving the sealing and isolation effect of the electrical connector.

[0040] At the same time, the electrical connector of this embodiment and its related structural parts not mentioned can refer to the high-speed connectors well known to technical personnel in this field, especially the high-speed connectors used for camera signal transmission, and will not be described in detail here.

[0041] Based on the above overall introduction, combined with Figure 3 and Figure 4 As shown, specifically, as a preferred implementation form, a boss 22 is formed in the middle of the outer cylindrical surface of the shielded conductor 2, and along the insertion direction of the shielded conductor 2, the installation cavity includes an insertion section, a matching section 35 and a glue injection section 37 arranged in sequence.

[0042] Among them, the radial dimension of the mating section 35 is smaller than the radial dimension of the insertion section and the injection section 37, and a first step 34 for blocking the boss 22 is formed between the insertion section and the mating section 35, and a first injection cavity 5 for injecting colloid is formed between the injection section 37 and the shielding conductor 2.

[0043] Here, by matching the boss 22 and the first step 34, the displacement of the shielding conductor 2 relative to the housing 3 along its own insertion direction can be limited. At the same time, the setting of the first glue injection cavity 5 can provide for filling with sufficient glue (i.e., colloid) and firmly bonding the shielding conductor 2 and the housing 3, as well as limiting the displacement of the shielding conductor 2 relative to the housing 3 in the direction away from its own insertion direction.

[0044] In the specific implementation, in this embodiment, as a preferred implementation form, see Figure 4 As shown, the insertion section includes a first section 31, a transition section 32 and a second section 33 which are arranged in sequence along the insertion direction of the shielded conductor 2. The radial dimension of the first section 31 is greater than the radial dimension of the second section 33. The transition section 32 is arranged with a gradually increasing radial dimension to transition between the first section 31 and the second section 33, so as to facilitate guiding the shielded conductor 2 to be inserted into place.

[0045] Furthermore, in this embodiment, as a preferred implementation form, the outer cylindrical surface of the shielding conductor 2 is divided into an outer cylindrical surface lower portion 21 and an outer cylindrical surface upper portion 23 by the boss 22 .

[0046] As the shield conductor 2 is inserted into place, the lower portion 21 of the outer cylinder enters the insertion section, the upper portion 23 of the outer cylinder is closely attached to the inner wall of the matching section 35 and enters the injection section 37, and a first groove 24 is provided on the upper portion 23 of the outer cylinder corresponding to the injection section 37. The first groove 24, the step between the injection section 37 and the matching section 35, and the injection section 37 together form a first injection cavity 5.

[0047] It can be understood that the provision of the first groove 24 is conducive to increasing the filling amount of the colloid and improving the bonding stability, and the first glue injection cavity 5 is formed by the first groove 24, the step between the glue injection section 37 and the matching section 35, and the glue injection section 37, which can increase the colloid filling amount and help ensure air tightness.

[0048] Considering the convenience of glue injection, in this embodiment, as a preferred implementation form, still refer to Figure 3 and Figure 4 As shown, the end of the injection section 37 away from the matching section 35 is formed with a chamfer 36, and the first groove 24 is arranged on the inner wall of the injection section 37 corresponding to the chamfer 36. Thus, the injection operation is facilitated, and it can be understood that the flow direction of the glue can be guided to a certain extent, which is conducive to the glue filling in the first injection cavity 5.

[0049] In addition, in this embodiment, as a preferred implementation form, see Figures 1 to 3 As shown, along the insertion direction of the insulator 1, the outer cylindrical surface of the insulator 1 includes an outer cylindrical lower section 12 and an outer cylindrical main section 14 which are arranged in sequence, the radial dimension of the outer cylindrical lower section 12 is larger than the radial dimension of the outer cylindrical main section 14, and a second step 13 is formed between the outer cylindrical lower section 12 and the outer cylindrical main section 14.

[0050] Furthermore, the inner cavity includes an inner cavity lower portion 27, an inner cavity middle portion 26 and an inner cavity upper portion 25 which are arranged in sequence, the radial dimension of the inner cavity middle portion 26 is smaller than the radial dimensions of the inner cavity lower portion 27 and the inner cavity upper portion 25, and a third step 28 for blocking the second step 13 is formed between the inner cavity middle portion 26 and the inner cavity lower portion 27, and a fourth step 29 is formed between the inner cavity middle portion 26 and the inner cavity upper portion 25. The inner cavity upper portion 25, the fourth step 29 and the outer cylindrical main body section 14 together form a second injection cavity 6 for injecting colloid.

[0051] The provision of the second glue injection cavity 6 can facilitate effective bonding between the insulator 1 and the shielding conductor 2, and the cooperation of the second step 13 and the third step 28 can avoid glue overflow between the insulator 1 and the shielding conductor 2 when the glue is filled.

[0052] At the same time, the colloid injected into the second glue injection cavity 6 can limit the displacement of the insulator 1 relative to the shielding conductor 2 in the direction away from its own insertion direction. The cooperation of the second step 13 and the third step 28 can limit the displacement of the insulator 1 relative to the shielding conductor 2 along its own insertion direction.

[0053] It is worth mentioning here that the insulator 1 of this embodiment is also tubular in overall visual appearance so as to form a better match with the inner cavity of the shielding conductor 2 , and the insertion direction of the insulator 1 is the same as the insertion direction of the shielding conductor 2 .

[0054] See also Figure 2 and Figure 3 As shown, in this embodiment, as a preferred implementation form, as the insulator 1 is inserted into place, the outer cylindrical main body section 14 is tightly attached to the inner wall of the middle part 26 of the inner cavity and enters the upper part 25 of the inner cavity, and a second groove 15 is opened on the outer cylindrical main body section 14 near the fourth step 29. At the same time, the second groove 15 constitutes a part of the second injection cavity 6.

[0055] The second groove 15 forms a part of the second glue injection cavity 6, which is beneficial to increase the glue injection amount and ensure the bonding strength and sealing reliability.

[0056] Furthermore, in this embodiment, as a preferred implementation form, see Figure 1 , Figure 2 and Figure 5 As shown, a glue section 46 having a radial dimension larger than that of the needle body 41 is provided on the needle body 41 of the insertion needle 4, and a third groove 45 is provided on the glue section 46.

[0057] The plug pin 4 is inserted into the insertion cavity in the insertion direction facing away from the insulator 1. The insertion cavity includes an upper section 16 and a middle section 18 of the insertion cavity, which are arranged in sequence along the insertion direction of the plug pin 4. The radial dimension of the upper section 16 of the insertion cavity is greater than the radial dimension of the middle section 18 of the insertion cavity, and a fifth step 17 for blocking the adhesive section 46 is formed between the upper section 16 of the insertion cavity and the middle section 18 of the insertion cavity. At the same time, a third glue injection cavity 7 for injecting glue is formed between the upper section 16 of the insertion cavity and the third groove 45.

[0058] The setting of the fifth step 17 can limit the displacement of the pin 4 relative to the insulator 1 along its own insertion direction. At the same time, the setting of the third glue injection cavity 7 is conducive to ensuring the bonding reliability between the pin 4 and the insulator 1, and limiting the displacement of the pin 4 relative to the insulator 1 in the insertion direction away from itself.

[0059] Secondly, in this embodiment, as a preferred implementation form, the third groove 45 is partially located outside the upper section 16 of the insertion cavity, and the colloid injected into the second glue injection cavity 6 and the third glue injection cavity 7 between the plug pin 4 and the inner wall of the inner cavity floods the end of the insulator 1, thereby connecting the insulator 1, the shielding conductor 2 and the plug pin 4 together. The advantage of such a setting is that it is conducive to saving the glue injection process and improving the glue injection efficiency.

[0060] In addition, in this embodiment, as a preferred implementation form, continue to refer to Figure 5 As shown, a fitting section 43 is also provided in the middle of the needle body 41 and is adjacent to the adhesive section 46 . The fitting section 43 is located on one side of the adhesive section 46 close to the insertion end of the insertion needle 4 .

[0061] A sixth step 44 that blocks and cooperates with the fifth step 17 is formed between the fitting section 43 and the adhesive section 46 , and the fitting section 43 is inserted into the middle section 18 of the insertion cavity in close contact with the inner wall of the middle section 18 of the insertion cavity.

[0062] It can be understood that the blocking cooperation between the fifth step 17 and the sixth step 44 and the close contact between the fitting section 43 and the inner wall of the middle section 18 of the insertion cavity can help to avoid glue overflow between the pin 4 and the insulator 1.

[0063] Moreover, in order to effectively avoid glue overflow between the pin 4 and the insulator 1 in the present embodiment, a seventh step 42 is formed at the end of the fitting section 43 away from the bonding section 46. At the same time, the insertion cavity includes an insertion cavity lower section 19 arranged at the end of the insertion cavity middle section 18 away from the insertion cavity upper section 16. The radial dimension of the insertion cavity lower section 19 is smaller than the radial dimension of the insertion cavity middle section 18, and an eighth step 11 is formed between the insertion cavity middle section 18 and the insertion cavity lower section 19 to block and cooperate with the seventh step 42.

[0064] Thus, the seventh step 42 can be flush with the eighth step 11, and the fifth step 17 and the sixth step 44 can be matched with each other, and the fitting section 43 can be closely attached to the inner wall of the middle section 18 of the insertion cavity, so as to effectively avoid the overflow of glue.

[0065] The electrical connector of this embodiment injects glue between the housing 3 and the shielded conductor 2, between the shielded conductor 2 and the insulator 1, and between the insulator 1 and the pin 4. The fluidity of the glue can be used to fill the space between the components. Combined with the step positioning between the components, after the glue is cured, the components are bonded and fixed together, which is also conducive to meeting the airtightness requirements, thereby improving the sealing and isolation effect of the electrical connector.

[0066] It is still worth mentioning that, in existing electrical connectors, the various components are generally fixed together by processing barbs or protrusions on metal parts, which are interference fit with plastic parts. However, the aperture of the plastic parts at the fitting point is enlarged, and the sealant can easily penetrate into the gaps between the parts, resulting in the risk of overflow or leakage. In addition, if glue is used to first fix the components and then the sealant is poured, the process complexity and cost are relatively high.

[0067] The electrical connector of the present application adopts the structural design as described above, which can effectively solve the problem of glue overflow or leakage, improve the reliability of the electrical connector and the intelligent quality of the entire vehicle, and is simple to operate, which helps to reduce the difficulty and cost of production.

[0068] The above is only a preferred embodiment of the present invention. The detailed explanation of the configuration, the examples of the specific structural setting, or the description of the assembly connection method, etc., are all for the purpose of full disclosure so that those skilled in the art can better implement the present invention, and are not intended to limit the scope of protection of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An electrical connector, characterized in that: It comprises a housing (3) having a mounting cavity, a tubular shielded conductor (2) inserted into the mounting cavity, an insulator (1) inserted into the inner cavity of the shielded conductor (2) and having an insertion cavity, and a plug pin (4) inserted into the insertion cavity; The plug pin (4) and the shielded conductor (2) are coaxially arranged, and the housing (3) and the shielded conductor (2), the shielded conductor (2) and the insulator (1), and the insulator (1) and the plug pin (4) are all fixedly connected by glue injection.

2. The electrical connector according to claim 1, wherein: A boss (22) is formed in the middle of the outer cylindrical surface of the shielded conductor (2); along the insertion direction of the shielded conductor (2), the installation cavity comprises an insertion section, a matching section (35) and a glue injection section (37) which are arranged in sequence; The radial dimension of the matching section (35) is smaller than the radial dimensions of the insertion section and the injection section (37), a first step (34) for blocking the boss (22) is formed between the insertion section and the matching section (35), and a first injection cavity (5) for injecting colloid is formed between the injection section (37) and the shielding conductor (2).

3. The electrical connector according to claim 2, wherein: The insertion section comprises a first section (31), a transition section (32) and a second section (33) which are sequentially arranged along the insertion direction of the shielded conductor (2); the radial dimension of the first section (31) is larger than the radial dimension of the second section (33); and the transition section (32) is arranged to transition between the first section (31) and the second section (33) with a gradually increasing radial dimension.

4. The electrical connector according to claim 2, wherein: The outer cylindrical surface of the shielding conductor (2) is divided into an outer cylindrical surface lower part (21) and an outer cylindrical surface upper part (23) by the boss (22); As the shielded conductor (2) is inserted into place, the lower portion (21) of the outer cylindrical surface enters the insertion section, the upper portion (23) of the outer cylindrical surface is closely attached to the inner wall of the matching section (35) and enters the injection section (37), and a first groove (24) is provided on the upper portion (23) of the outer cylindrical surface corresponding to the injection section (37); The first groove (24), the step between the glue injection section (37) and the matching section (35), and the glue injection section (37) together form the first glue injection cavity (5).

5. The electrical connector according to claim 4, characterized in that: A chamfer (36) is formed on one end of the glue injection section (37) away from the matching section (35), and the first groove (24) is arranged on the inner wall of the glue injection section (37) corresponding to the inner side of the chamfer (36).

6. The electrical connector according to any one of claims 1 to 5, characterized in that: Along the insertion direction of the insulator (1), the outer cylindrical surface of the insulator (1) comprises an outer cylindrical surface lower section (12) and an outer cylindrical surface main section (14) which are arranged in sequence, the radial dimension of the outer cylindrical surface lower section (12) is greater than the radial dimension of the outer cylindrical surface main section (14), and a second step (13) is formed between the outer cylindrical surface lower section (12) and the outer cylindrical surface main section (14); The inner cavity comprises an inner cavity lower portion (27), an inner cavity middle portion (26) and an inner cavity upper portion (25) which are arranged in sequence, the radial dimension of the inner cavity middle portion (26) is smaller than the radial dimensions of the inner cavity lower portion (27) and the inner cavity upper portion (25), and a third step (28) for blocking the second step (13) is formed between the inner cavity middle portion (26) and the inner cavity lower portion (27), and a fourth step (29) is formed between the inner cavity middle portion (26) and the inner cavity upper portion (25); The inner cavity upper portion (25), the fourth step (29) and the outer cylindrical main body section (14) together form a second glue injection cavity (6) for injecting glue.

7. The electrical connector according to claim 6, characterized in that: As the insulator (1) is inserted into place, the outer cylindrical main body section (14) is closely attached to the inner wall of the middle part (26) of the inner cavity and enters the upper part (25) of the inner cavity, and a second groove (15) is provided on the outer cylindrical main body section (14) near the fourth step (29); the second groove (15) constitutes a part of the second glue injection cavity (6).

8. The electrical connector according to claim 7, characterized in that: The needle body (41) of the insertion needle (4) is provided with a bonding section (46) whose radial dimension is larger than that of the needle body (41), and the bonding section (46) is provided with a third groove (45); The plug pin (4) is inserted into the insertion cavity in a direction opposite to the insertion direction of the insulator (1); along the insertion direction of the plug pin (4), the insertion cavity comprises an insertion cavity upper section (16) and an insertion cavity middle section (18) which are arranged in sequence; The radial dimension of the upper section (16) of the insertion cavity is greater than the radial dimension of the middle section (18) of the insertion cavity, and a fifth step (17) for blocking the bonding section (46) is formed between the upper section (16) of the insertion cavity and the middle section (18); and a third glue injection cavity (7) for injecting glue is formed between the upper section (16) of the insertion cavity and the third groove (45).

9. The electrical connector according to claim 8, characterized in that: The third groove (45) is partially located outside the upper section (16) of the insertion cavity, and the colloid injected into the second glue injection cavity (6) and the third glue injection cavity (7) between the plug pin (4) and the inner wall of the inner cavity submerges the end of the insulator (1), thereby connecting and fixing the insulator (1), the shielding conductor (2) and the plug pin (4) together.

10. The electrical connector according to claim 8, characterized in that: The middle part of the needle body (41) is also provided with a fitting section (43) arranged adjacent to the adhesive section (46), the fitting section (43) is located on a side of the adhesive section (46) close to the insertion end of the insertion pin (4), and a sixth step (44) is formed between the fitting section (43) and the adhesive section (46) to block and cooperate with the fifth step (17); The fitting section (43) is inserted into the middle section (18) of the insertion cavity, closely adhering to the inner wall of the middle section (18) of the insertion cavity.

Images