Coaxial connector, electric connection module and electric connection assembly

Abstract

The utility model discloses a coaxial connector, an electric connection module and an electric connection assembly. The coaxial connector comprises an outer terminal which is provided with a hollow inner cavity; the insulator is arranged in the inner cavity of the outer terminal; the inner terminal is kept in the inner cavity of the outer terminal by the insulator; an outer shielding layer and a central conductor of the cable are electrically connected with the outer terminal and the inner terminal respectively; a crimping cylinder which crimps the outer shielding layer of the cable onto the outer terminal; and the heat shrink tube is sleeved and thermally shrunk on the cable and the outer terminal so as to realize the sealing between the outer terminal and the cable. According to the coaxial connector, the heat shrink tube is used for replacing glue pouring sealing to achieve sealing between the outer terminal of the coaxial connector and the cable, and therefore the sealing structure between the shell and the coaxial connector can be simplified, manufacturing cost can be reduced, and production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a coaxial connector, comprising an electrical connection module of the coaxial connector and an electrical connection component comprising the electrical connection module. Background Art

[0002] In the prior art, in order to achieve the seal between the housing and the coaxial connector installed in the mounting hole of the housing, it is necessary to inject sealant between the housing and the coaxial connector. The sealant not only needs to be injected into the mounting hole, but also needs to wrap the rear end of the housing and the front end of the cable to simultaneously achieve the seal between the outer terminal and the housing and the seal between the outer terminal and the cable. This will result in the need to inject a large amount of sealant, and it is necessary to form a complex sealing structure on the rear end of the housing, which will increase the cost. In addition, due to the large volume of the injected sealant, the curing time is long, which will reduce the production efficiency. Utility Model Content

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the utility model, a coaxial connector is provided. The coaxial connector comprises: an outer terminal, which is formed with a hollow inner cavity; an insulator, which is arranged in the inner cavity of the outer terminal; an inner terminal, which is held in the inner cavity of the outer terminal by the insulator; a cable, whose outer shielding layer and center conductor are electrically connected to the outer terminal and the inner terminal respectively; a crimping barrel, which crimps the outer shielding layer of the cable to the outer terminal; and a heat shrink tube, which is sleeved and heat-shrunk on the cable and the outer terminal to achieve sealing between the outer terminal and the cable.

[0005] According to an exemplary embodiment of the utility model, the outer terminal comprises: a main body; and a rear end portion extending rearward from the rear end surface of the main body portion. The crimping barrel crimps the outer shielding layer of the cable onto the rear end portion of the outer terminal, and the front end and the rear end of the heat shrink tube are heat-shrunk onto the main body of the outer terminal and the outer covering layer of the cable, respectively.

[0006] According to another exemplary embodiment of the utility model, an annular groove is formed on the outer peripheral surface of the rear end of the main body of the outer terminal, and the front end of the heat shrink tube is engaged with the annular groove to increase the engagement force between the front end of the heat shrink tube and the main body of the outer terminal.

[0007] According to another exemplary embodiment of the utility model, the insulator and the inner terminal are arranged in the main body of the outer terminal, the front end of the cable passes through the rear end of the outer terminal, and the rear end of the inner terminal is crimped onto the front end of the center conductor of the cable.

[0008] According to another exemplary embodiment of the utility model, the coaxial connector also includes: an inner seal, which is arranged in the inner cavity of the outer terminal and simultaneously engaged with the inner circumferential surface of the outer terminal, the outer circumferential surface of the inner terminal and the front end of the insulator, for achieving sealing between the insulator and the outer terminal and sealing between the insulator and the inner terminal.

[0009] According to another exemplary embodiment of the present utility model, the inner seal is a potting seal formed by a sealant poured into the inner cavity of the outer terminal.

[0010] According to another exemplary embodiment of the present invention, the inner seal is an elastic seal member which is sleeved on the inner terminal and inserted into the outer terminal.

[0011] According to another exemplary embodiment of the utility model, a step portion is formed on the outer side of the main body portion of the outer terminal, and the step portion is spaced opposite to the front end of the heat shrink tube; an annular groove is formed between the step portion and the front end of the heat shrink tube, and the annular groove is used to engage with the annular outer seal.

[0012] According to another aspect of the utility model, an electrical connection module is provided, comprising: a housing having a mounting hole; the aforementioned coaxial connector inserted into the mounting hole of the housing; and an external seal disposed in the mounting hole of the housing for achieving a seal between the housing and an outer terminal of the coaxial connector.

[0013] According to an exemplary embodiment of the utility model, the heat shrink tube is located outside the shell, and the front ends of the outer terminal and the inner terminal are located inside the shell for mating with a mating coaxial connector inserted into the shell.

[0014] According to another exemplary embodiment of the utility model, the mounting hole has a front port and a rear port which are opposite to each other in the axial direction thereof, and the outer seal is arranged in the rear port of the mounting hole and simultaneously engages with the inner side of the shell, the outer side of the outer terminal and the front end of the heat shrink tube to achieve sealing between the outer terminal and the shell and sealing between the outer terminal and the heat shrink tube.

[0015] According to another exemplary embodiment of the utility model, a step portion is formed on the outer side of the main body portion of the outer terminal, and the step portion is spaced opposite to the front end of the heat shrink tube; an annular groove is formed between the step portion and the front end of the heat shrink tube, and a portion of the outer seal is engaged in the annular groove.

[0016] According to another exemplary embodiment of the present utility model, the outer seal is a glue-potted seal formed by a sealant poured into a rear port of the mounting hole of the housing.

[0017] According to another exemplary embodiment of the present utility model, the outer seal is an elastic seal which is sleeved on the outer terminal and inserted into the mounting hole of the housing.

[0018] According to another aspect of the utility model, an electrical connection assembly is provided, which comprises: the electrical connection module mentioned above; and a matching coaxial connector, which is inserted into the housing of the electrical connection module and is used to match with the coaxial connector.

[0019] In the aforementioned exemplary embodiments of the present invention, heat shrink tubing is used instead of glue sealing to achieve sealing between the outer terminal of the coaxial connector and the cable. Therefore, the sealing structure between the housing and the coaxial connector can be simplified, the manufacturing cost can be reduced, and the production efficiency can be improved.

[0020] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective schematic diagram showing an electrical connection module according to an exemplary embodiment of the present utility model when viewed from the rear side;

[0022] Figure 2 An axial cross-sectional view showing an electrical connection module according to an exemplary embodiment of the present utility model;

[0023] Figure 3 A plan cross-sectional view showing an electrical connection module according to an exemplary embodiment of the present utility model;

[0024] Figure 4 A perspective exploded schematic diagram showing an electrical connection module according to an exemplary embodiment of the utility model;

[0025] Figure 5 A planar exploded schematic diagram showing an electrical connection module according to an exemplary embodiment of the present utility model;

[0026] Figure 6 A three-dimensional schematic diagram showing a coaxial connector according to an exemplary embodiment of the utility model;

[0027] Figure 7 An exploded schematic diagram of a coaxial connector according to an exemplary embodiment of the present utility model is shown. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further specifically described below through examples and in combination with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the implementation mode of the utility model with reference to the accompanying drawings is intended to explain the overall utility model concept of the utility model, and should not be understood as a limitation of the utility model.

[0029] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0030] According to an overall technical concept of the utility model, a coaxial connector is provided. The coaxial connector includes: an outer terminal, which is formed with a hollow inner cavity; an insulator, which is arranged in the inner cavity of the outer terminal; an inner terminal, which is held in the inner cavity of the outer terminal by the insulator; a cable, whose outer shielding layer and center conductor are electrically connected to the outer terminal and the inner terminal respectively; a crimping barrel, which crimps the outer shielding layer of the cable to the outer terminal; and a heat shrink tube, which is sleeved and heat-shrunk on the cable and the outer terminal to achieve sealing between the outer terminal and the cable.

[0031] According to another general technical concept of the utility model, an electrical connection module is provided. The electrical connection module includes: a housing formed with a mounting hole; the aforementioned coaxial connector inserted into the mounting hole of the housing; and an external seal disposed in the mounting hole of the housing for achieving a seal between the housing and an outer terminal of the coaxial connector.

[0032] According to another general technical concept of the utility model, an electrical connection assembly is provided, which includes: the electrical connection module mentioned above; and a matching coaxial connector, which is inserted into the housing of the electrical connection module and is used to match with the coaxial connector.

[0033] Figure 1 A perspective schematic diagram showing an electrical connection module according to an exemplary embodiment of the present utility model when viewed from the rear side; Figure 2 An axial cross-sectional view showing an electrical connection module according to an exemplary embodiment of the present utility model; Figure 3 A plan cross-sectional view showing an electrical connection module according to an exemplary embodiment of the present utility model; Figure 4 A perspective exploded schematic diagram showing an electrical connection module according to an exemplary embodiment of the utility model; Figure 5 A planar exploded schematic diagram showing an electrical connection module according to an exemplary embodiment of the present utility model; Figure 6A three-dimensional schematic diagram showing a coaxial connector 1 according to an exemplary embodiment of the utility model; Figure 7 An exploded schematic diagram of a coaxial connector 1 according to an exemplary embodiment of the present utility model is shown.

[0034] like Figures 1 to 7 As shown, in an exemplary embodiment of the utility model, a coaxial connector 1 is disclosed. The coaxial connector 1 includes: an outer terminal 11, an inner terminal 12, an insulator 13, a cable 10, a crimping barrel 16 and a heat shrink tube 15. A hollow inner cavity 101 is formed in the outer terminal 11. The insulator 13 is disposed in the inner cavity 101 of the outer terminal 11. The inner terminal 12 is held in the inner cavity 101 of the outer terminal 11 by the insulator 13. The outer shielding layer 10b and the center conductor 10a of the cable 10 are electrically connected to the outer terminal 11 and the inner terminal 12, respectively. The crimping barrel 16 crimps the outer shielding layer (e.g., shielding braided layer) 10b of the cable 10 onto the outer terminal 11. The heat shrink tube 15 is sleeved and heat-shrunk on the cable 10 and the outer terminal 11 to achieve sealing between the outer terminal 11 and the cable 10.

[0035] like Figures 1 to 7 As shown, in the illustrated embodiment, the outer terminal 11 includes: a main body 110 and a rear end 111. The rear end 111 extends rearward from the rear end surface 11d of the main body 110. The crimping barrel 16 crimps the outer shielding layer 10b of the cable 10 onto the rear end 111 of the outer terminal 11, and the front end and rear end of the heat shrink tube 15 are heat-shrunk onto the main body 110 of the outer terminal 11 and the outer covering layer 10c of the cable 10, respectively.

[0036] like Figures 1 to 7 As shown, in the illustrated embodiment, an annular groove 11c or a pattern is formed on the outer peripheral surface of the rear end of the main body 110 of the external terminal 11, and the front end of the heat shrink tube 15 is engaged with the annular groove 11c to increase the engagement force between the front end of the heat shrink tube 15 and the main body 110 of the external terminal 11.

[0037] like Figures 1 to 7 As shown, in the illustrated embodiment, the insulator 13 and the inner terminal 12 are arranged in the main body 110 of the outer terminal 11, the front end of the cable 10 passes through the rear end 111 of the outer terminal 11, and the rear end of the inner terminal 12 is crimped onto the front end of the center conductor 10a of the cable 10.

[0038] like Figures 1 to 7 As shown, in the illustrated embodiment, the coaxial connector 1 also includes an inner seal 14, which is arranged in the inner cavity 101 of the outer terminal 11 and is simultaneously engaged with the inner circumferential surface of the outer terminal 11, the outer circumferential surface of the inner terminal 12 and the front end of the insulator 13, for achieving sealing between the insulator 13 and the outer terminal 11 and sealing between the insulator 13 and the inner terminal 12.

[0039] like Figures 1 to 7 As shown, in the illustrated embodiment, the inner seal 14 is a potting seal formed by a sealant poured into the inner cavity 101 of the outer terminal 11. However, the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the inner seal 14 can be an elastic seal that is sleeved on the inner terminal 12 and inserted into the outer terminal 11.

[0040] like Figures 1 to 7 As shown, in the illustrated embodiment, a step portion 11a is formed on the outer side of the main body portion 110 of the outer terminal 11, and the step portion 11a is spaced opposite to the front end of the heat shrink tube 15. An annular groove 11b is formed between the step portion 11a and the front end of the heat shrink tube 15, and the annular groove 11b is used to engage with the annular outer seal 3.

[0041] like Figures 1 to 7 As shown, in another exemplary embodiment of the utility model, an electrical connection module is also disclosed. The electrical connection module includes: a housing 2, a coaxial connector 1 and an outer seal 3. A mounting hole 20 is formed in the housing 2. The coaxial connector 1 is inserted into the mounting hole 20 of the housing 2. The outer seal 3 is arranged in the mounting hole 20 of the housing 2 to achieve a seal between the housing 2 and the outer terminal 11 of the coaxial connector 1.

[0042] like Figures 1 to 7 As shown, in the illustrated embodiment, the heat shrink tube 15 is located outside the housing 2, and the front ends of the outer terminal 11 and the inner terminal 12 are located inside the housing 2 for mating with a mating coaxial connector (not shown) inserted into the housing 2.

[0043] like Figures 1 to 7 As shown, in the illustrated embodiment, the mounting hole 20 has a front port and a rear port 20a which are opposite to each other in its axial direction, and the external seal 3 is arranged in the rear port 20a of the mounting hole 20 and is simultaneously engaged with the inner side of the shell 2, the outer side of the external terminal 11 and the front end of the heat shrink tube 15 to achieve sealing between the external terminal 11 and the shell 2 and sealing between the external terminal 11 and the heat shrink tube 15.

[0044] like Figures 1 to 7 As shown, in the illustrated embodiment, a step portion 11a is formed on the outer side of the main body portion 110 of the outer terminal 11, and the step portion 11a is spaced apart from the front end of the heat shrink tube 15. An annular groove 11b is formed between the step portion 11a and the front end of the heat shrink tube 15, and a part of the outer seal 3 is engaged in the annular groove 11b.

[0045] like Figures 1 to 7As shown, in the illustrated embodiment, the outer seal 3 is a potting seal formed by a sealant poured into the rear port 20a of the mounting hole 20 of the housing 2. However, the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the outer seal 3 may be an elastic seal that is sleeved on the outer terminal 11 and inserted into the mounting hole 20 of the housing 2.

[0046] like Figures 1 to 7 As shown, in another exemplary embodiment of the utility model, an electrical connection assembly is also disclosed. The electrical connection assembly includes: the aforementioned electrical connection module and a mating coaxial connector, the mating coaxial connector is inserted into the housing 2 of the electrical connection module for mating with the coaxial connector 1 .

[0047] Those skilled in the art will appreciate that the embodiments described above are exemplary and can be improved upon by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present utility model.

[0048] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementation modes of the present invention and should not be construed as limiting the present invention.

[0049] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined by the claims and their equivalents.

[0050] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element number of the claims should not be construed as limiting the scope of the present invention.

Claims

1. A coaxial connector, characterized in that: include: An outer terminal (11) is formed with a hollow inner cavity (101); An insulator (13) is arranged in the inner cavity (101) of the external terminal (11); An inner terminal (12) is held in an inner cavity (101) of the outer terminal (11) by the insulator (13); A cable (10), wherein the outer shielding layer (10b) and the center conductor (10a) are electrically connected to the outer terminal (11) and the inner terminal (12) respectively; A crimping barrel (16) for crimping the outer shielding layer (10b) of the cable (10) onto the outer terminal (11); and A heat shrink tube (15) is sleeved and heat-shrunk on the cable (10) and the external terminal (11) to achieve sealing between the external terminal (11) and the cable (10).

2. The coaxial connector according to claim 1, characterized in that: The external terminal (11) comprises: a main body portion (110); and A rear end portion (111) extends rearward from a rear end surface (11d) of the main body portion (110), The crimping barrel (16) crimps the outer shielding layer (10b) of the cable (10) onto the rear end (111) of the external terminal (11), and the front and rear ends of the heat shrinkable tube (15) are heat-shrunk onto the main body (110) of the external terminal (11) and the outer covering layer (10c) of the cable (10), respectively.

3. The coaxial connector according to claim 2, characterized in that: An annular groove (11c) is formed on the outer peripheral surface of the rear end of the main body (110) of the external terminal (11), and the front end of the heat shrink tube (15) is engaged with the annular groove (11c) to increase the engagement force between the front end of the heat shrink tube (15) and the main body (110) of the external terminal (11).

4. The coaxial connector according to claim 2, characterized in that: The insulator (13) and the inner terminal (12) are arranged in the main body (110) of the outer terminal (11), the front end of the cable (10) passes through the rear end (111) of the outer terminal (11), and the rear end of the inner terminal (12) is crimped onto the front end of the center conductor (10a) of the cable (10).

5. The coaxial connector according to claim 1, characterized in that: Also includes: An inner seal (14) is arranged in the inner cavity (101) of the outer terminal (11) and is simultaneously engaged with the inner peripheral surface of the outer terminal (11), the outer peripheral surface of the inner terminal (12) and the front end of the insulator (13), so as to achieve sealing between the insulator (13) and the outer terminal (11) and sealing between the insulator (13) and the inner terminal (12).

6. The coaxial connector according to claim 5, characterized in that: The inner seal (14) is a potted seal formed by a sealant poured into the inner cavity (101) of the outer terminal (11).

7. The coaxial connector according to claim 5, characterized in that: The inner seal (14) is an elastic seal which is sleeved on the inner terminal (12) and inserted into the outer terminal (11).

8. The coaxial connector according to claim 2, characterized in that: A step portion (11a) is formed on the outer side of the main body portion (110) of the external terminal (11), and the step portion (11a) is spaced apart from the front end of the heat shrink tube (15); An annular groove (11b) is formed between the step portion (11a) and the front end of the heat shrink tube (15), and the annular groove (11b) is used to engage with the annular outer seal (3).

9. An electrical connection module, characterized in that: include: The housing (2) is formed with a mounting hole (20); The coaxial connector (1) according to any one of claims 1 to 8, inserted into the mounting hole (20) of the housing (2); and An external seal (3) is arranged in a mounting hole (20) of the housing (2) and is used to achieve sealing between the housing (2) and an external terminal (11) of the coaxial connector (1).

10. The electrical connection module according to claim 9, characterized in that: The heat shrink tube (15) is located outside the shell (2), and the front ends of the outer terminal (11) and the inner terminal (12) are located inside the shell (2) for mating with a mating coaxial connector (1) inserted into the shell (2).

11. The electrical connection module according to claim 10, characterized in that: The mounting hole (20) has a front port and a rear port (20a) opposite to each other in its axial direction. The external seal (3) is arranged in the rear port (20a) of the mounting hole (20) and is simultaneously engaged with the inner side of the shell (2), the outer side of the external terminal (11) and the front end of the heat shrink tube (15) to achieve sealing between the external terminal (11) and the shell (2) and sealing between the external terminal (11) and the heat shrink tube (15).

12. The electrical connection module according to claim 11, characterized in that: A step portion (11a) is formed on the outer side of the main body portion (110) of the external terminal (11), and the step portion (11a) is spaced apart from the front end of the heat shrink tube (15); An annular groove (11b) is formed between the step portion (11a) and the front end of the heat shrink tube (15), and a portion of the outer seal (3) is engaged in the annular groove (11b).

13. The electrical connection module according to claim 11, characterized in that: The outer seal (3) is a glue-filled seal formed by a sealant poured into a rear port (20a) of the mounting hole (20) of the housing (2).

14. The electrical connection module according to claim 11, characterized in that: The outer seal (3) is an elastic seal which is sleeved on the outer terminal (11) and inserted into the mounting hole (20) of the housing (2).

15. An electrical connection assembly, characterized in that: include: The electrical connection module according to any one of claims 9 to 14; and A mating coaxial connector (1) is inserted into the housing (2) of the electrical connection module and is used to mate with the coaxial connector (1).

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