Crimping structure of coaxial connector

Abstract

The utility model discloses a coaxial connector crimping structure, which comprises a connecting main body and a wire rod main body, the connecting main body comprises a main body part and a connecting part, and the inside of the connecting part is hollow so as to form an accommodating cavity with an opening; at least one part of the wire rod body is located in the containing cavity, the wire rod body comprises a first insulation part and a supporting piece, the first insulation part is sleeved with the supporting piece, the end, close to the body part, of the first insulation part is turned outwards to form a woven net, the woven net wraps the supporting piece, and the woven net makes contact with the outer wall of the supporting piece. And the woven net is in contact with the inner wall of the accommodating cavity. According to the design, when the wire rod main body is installed in the connecting main body, the supporting piece supports the woven net so that the woven net can abut against the inner wall of the containing cavity, it is ensured that the woven net and the inner wall of the containing cavity are in close contact, and therefore the problem that a gap exists between the wire rod main body and the connecting main body after assembly is solved, and the electrical performance of the coaxial connector is improved; characteristic impedance matching between the wire body and the connection body is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more specifically to a coaxial connector crimping structure. Background Art

[0002] In the context of the rapid development of modern communication and data transmission technology, the coaxial connector is a key component for connecting electronic equipment and transmission cables, and its performance optimization is particularly important. Figure 1 As shown, in the traditional coaxial connector design, in order to ensure that the wire insulation layer can be smoothly inserted into the connector body, a tiny gap is usually reserved between the wire insulation layer and the connector body. The size of this gap is usually controlled between 0.1 and 0.15 mm. The existence of this gap directly affects the two core performance indicators of the coaxial connector: characteristic impedance and return loss.

[0003] As an inherent electrical characteristic of the signal transmission path, the stability of characteristic impedance is crucial to maintaining the integrity of the signal waveform and reducing signal attenuation. However, the presence of the gap causes the electric field distribution between the insulation layer and the connector to change, which in turn causes the characteristic impedance to increase, thereby destroying the matching of signal transmission and reducing signal transmission efficiency. On the other hand, return loss is an important indicator to measure the degree of reflection of the signal during transmission. Ideally, the signal can move along the transmission path unimpeded instead of being reflected at the connector interface. However, the presence of the gap exacerbates the reflection phenomenon of the signal at the interface, resulting in poor return loss.

[0004] In existing coaxial connectors, the plug-in end of the connector body has a small diameter and is easily broken when subjected to lateral force. Secondly, in order to ensure the firmness of the connection between the wire insulation layer and the connector body, the plug-in end often needs to be knurled to enhance the connection strength between the braided mesh and the plug-in end. Although such a design can enhance the connection strength between the plug-in end and the wire insulation layer, it also makes the connector body structure complex and difficult to produce. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a coaxial connector crimping structure to solve the problem of a gap between a wire body and a connection body after assembly.

[0006] The technical solution of the utility model is as follows: A coaxial connector crimping structure, comprising:

[0007] A connecting body, the connecting body comprising a main body portion and a connecting portion fixedly connected to the main body portion, wherein the connecting portion is hollow inside to form a receiving cavity with an open opening;

[0008] A wire body, at least a portion of which is located in the accommodating cavity, the wire body comprising a first insulating portion and a support member, the support member being sleeved on the first insulating portion, one end of the first insulating portion close to the main portion being folded outward to form a woven net, the woven net wrapping at least a portion of the support member, and the woven net is in contact with the outer wall of the support member, and the woven net is in contact with the inner wall of the accommodating cavity.

[0009] Furthermore, a plug hole is provided on the main body, the plug hole is communicated with the accommodating cavity, and the plug hole is used for allowing the wire body to pass through so that the connection terminal in the wire body is electrically connected with the conductive terminal in the connecting body.

[0010] Furthermore, the diameter of the plug hole is smaller than the diameter of the accommodating cavity.

[0011] Furthermore, the wire body also includes a second insulating portion, the second insulating portion is fixedly connected to the first insulating portion, and a diameter of the second insulating portion is greater than a diameter of the first insulating portion.

[0012] Furthermore, the wire body further includes a third insulating portion, which is disposed on an end of the first insulating portion away from the second insulating portion, and a diameter of the third insulating portion is smaller than a diameter of the first insulating portion.

[0013] Furthermore, the first insulating part, the second insulating part and the third insulating part are all an integrated part.

[0014] Furthermore, the support member is a copper ring.

[0015] Furthermore, it also includes a waist-shaped spring piece, which is embedded in one end of the main body away from the wire body, and the waist-shaped spring piece is a waist-shaped cylindrical structure that is thin in the middle and thick at both ends.

[0016] Furthermore, a plurality of hollow grooves are formed on the surface of the waist-shaped spring piece, and the plurality of hollow grooves are arranged at equal intervals along the surface of the waist-shaped spring piece.

[0017] Furthermore, the surface of the waist-shaped spring sheet is provided with grooves.

[0018] The utility model according to the above scheme has the beneficial effect that: the utility model provides a coaxial connector crimping structure, including: a connecting body and a wire body, the connecting body including a main body part and a connecting part fixedly connected to the main body part, the connecting part is hollow inside to form a accommodating cavity with an open opening; at least a part of the wire body is located in the accommodating cavity, the wire body includes a first insulating part and a support member, the support member is sleeved on the first insulating part, one end of the first insulating part close to the main body part is folded outward to form a woven net, the woven net wraps at least a part of the support member, and the woven net is in contact with the outer wall of the support member, and the woven net is in contact with the inner wall of the accommodating cavity. With this design, when the wire body is loaded into the connecting body, the support member supports the braided mesh to abut the braided mesh against the inner wall of the accommodating cavity, ensuring that the braided mesh maintains close contact with the inner wall of the accommodating cavity, thereby solving the problem of a gap between the wire body and the connecting body after assembly, improving the electrical performance of the coaxial connector, and optimizing the characteristic impedance matching between the wire body and the connecting body. Since this design effectively eliminates the gap and optimizes the characteristic impedance matching, it can significantly reduce signal reflection, thereby improving the connector's return loss performance. Secondly, this design not only improves the mechanical properties of the crimping point between the wire body and the connecting body, thereby making the crimping point less likely to break, but also has the advantages of simple structure, convenient assembly, and easy manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a partial structural schematic diagram of an existing coaxial connector;

[0021] Figure 2 is a cross-sectional view of a coaxial connector in an embodiment of the utility model;

[0022] Figure 3 It is a structural exploded sectional view of a coaxial connector in an embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the structural decomposition of the coaxial connector in the embodiment of the utility model.

[0024] In the figure, 1a, wire insulation layer; 2a, connector body; 21a, plug-in end; 3a, gap; 1, connecting body; 11, main body; 111, plug-in hole; 12, connecting part; 121, accommodating cavity; 2, wire body; 21, first insulating part; 211, braided mesh; 22, supporting member; 23, second insulating part; 24, third insulating part; 3, wiring terminal; 4, conductive terminal; 5, waist-shaped spring leaf; 51, hollow groove; 52, slot. DETAILED DESCRIPTION

[0025] The following detailed description and drawings of the embodiments of the present invention are used to illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the embodiments described.

[0026] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0027] See also Figure 2 As shown, a coaxial connector crimping structure provided by an embodiment of the utility model includes: a connecting body 1 and a wire body 2, and at least a part of the wire body 2 is inserted into the connecting body 1.

[0028] In this embodiment, the connecting body 1 includes a main body 11 and a connecting part 12 fixedly connected to the main body 11. The connecting part 12 is hollow inside to form a receiving cavity 121 with an open opening, and the right end of the wire body 2 is inserted into the connecting body 1 through the open opening.

[0029] Among them, at least a portion of the wire body 2 is located in the accommodating cavity 121, the wire body 2 includes a first insulating portion 21 and a support member 22, the support member 22 is sleeved on the first insulating portion 21, and one end of the first insulating portion 21 close to the main body 11 is folded outward to form a woven net 211, the woven net 211 wraps at least a portion of the support member 22, and the woven net 211 is in contact with the outer wall of the support member 22, and the woven net 211 is in contact with the inner wall of the accommodating cavity 121. In this design, since one end of the first insulating portion 21 close to the main body 11 is folded outward to form a braided mesh 211, and the braided mesh 211 wraps at least a portion of the support member 22, when the wire body 2 is loaded into the accommodating cavity 121, the braided mesh 211 is squeezed and elastically deformed, so that the wire body 2 can be smoothly inserted into the accommodating cavity 121. When the wire body 2 is inserted into place, the support member 22 and the braided mesh 211 are embedded in the accommodating cavity 121, and the support member 22 supports the braided mesh 211 to abut the braided mesh against the inner wall of the accommodating cavity 121, ensuring that the braided mesh 211 maintains close contact with the inner wall of the accommodating cavity 121, thereby solving the problem of a gap 3a between the wire body 2 and the connecting body 1 after assembly, improving the electrical performance of the coaxial connector, and optimizing the characteristic impedance matching between the wire body 2 and the connecting body 1. Since the present design effectively eliminates the gap 3a and optimizes the characteristic impedance matching, it can significantly reduce the reflection of the signal, thereby improving the return loss performance of the connector. Secondly, such a design not only improves the mechanical properties of the crimping point between the wire body 2 and the connection body 1, thereby making the crimping point less likely to break, but also has the advantages of simple structure, convenient assembly, and easy manufacturing.

[0030] It is worth mentioning that the wire body 2 in the utility model adopts the above-mentioned structural design, which is not only convenient for installing the wire body 2, but also enables an interference fit between the wire body 2 and the connecting body 1, thereby eliminating the need for a knurling structure on the surface of the connecting body 1, thereby reducing the difficulty of production.

[0031] See also Figure 3 As shown, the main body 11 is provided with a plug hole 111, which is connected to the accommodating cavity 121. The plug hole 111 is used for the wire body 2 to pass through so that the connection terminal 3 in the wire body 2 is electrically connected to the conductive terminal 4 in the connecting body 1. In this embodiment, the diameter of the plug hole 111 is smaller than the diameter of the accommodating cavity 121.

[0032] In this embodiment, the wire body 2 also includes a second insulating portion 23, which is fixedly connected to the first insulating portion 21, and the diameter of the second insulating portion 23 is greater than the diameter of the first insulating portion 21. The first insulating portion 21 and the second insulating portion 23 are coaxially arranged, and an annular table is formed on the end face of the second insulating portion 23 close to the first insulating portion 21. The end of the first insulating portion 21 extends outward away from the annular table and is folded to form a woven mesh 211 covering at least a portion of the support member 22. In this design, the support member 22 is limited by the annular table and the woven mesh 211, which can prevent the support member 22 from falling off the first insulating portion 21.

[0033] See also Figure 3 and Figure 4 As shown, the wire body 2 further includes a third insulating portion 24, which is disposed on an end of the first insulating portion 21 away from the second insulating portion 23, and the diameter of the third insulating portion 24 is smaller than the diameter of the first insulating portion 21. Specifically, after the wire body 2 is inserted into the connecting body 1, a portion of the third insulating portion 24 is located in the plug hole 111 of the main body 11. This design allows the wire body 2 to be quickly inserted, and when installed in place, the first insulating portion 21 abuts against the end of the plug hole 111.

[0034] In this embodiment, the first insulating portion 21 , the second insulating portion 23 and the third insulating portion 24 are all an integrated piece.

[0035] Preferably, the support member 22 is a copper ring.

[0036] See also Figure 4 As shown, the coaxial connector crimping structure provided by the embodiment of the utility model also includes a waist-shaped spring piece 5, which is embedded in the end of the main body 11 away from the wire body 2, and the waist-shaped spring piece 5 is a waist-shaped cylindrical structure with a thin middle and thick ends gradually transitioning. In this embodiment, a plurality of hollow grooves 51 are opened on the surface of the waist-shaped spring piece 5, and the plurality of hollow grooves 51 are arranged at equal intervals along the surface of the waist-shaped spring piece 5, and a slot 52 is opened on the surface of the waist-shaped spring piece 5.

[0037] Specifically, when the coaxial connector and the pin are mated, during the insertion of the pin, the middle part of the waist-shaped spring piece 5 is lifted up, so that the waist-shaped spring piece 5 changes from a waist-shaped cylindrical structure with thick ends and thin middle to a cylindrical structure with similar thickness in each part; when the pin is withdrawn, the middle part of the waist-shaped spring piece 5 collapses and returns to a thin waist shape. This process is an elastic deformation process, and the pressure generated by the deformation is perpendicular to the contact surface between the middle part of the waist-shaped spring piece 5 and the pin. This pressure ensures that the electrical connection between the conductive terminal 4 in the connector and the pin is reliable.

[0038] It should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the application product is usually placed when used, or is the orientation or position relationship commonly understood by technical personnel in this field, or is the orientation or position relationship in which the application product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0040] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A coaxial connector crimping structure, characterized in that: include: A connecting body (1), the connecting body (1) comprising a main body portion (11) and a connecting portion (12) fixedly connected to the main body portion (11), the connecting portion (12) being hollow inside to form a receiving cavity (121) having an open opening; A wire body (2), at least a portion of the wire body (2) is located in the accommodating cavity (121), the wire body (2) comprises a first insulating portion (21) and a support member (22), the support member (22) is sleeved on the first insulating portion (21), one end of the first insulating portion (21) close to the main portion (11) is folded outward to form a braided net (211), the braided net (211) wraps at least a portion of the support member (22), and the braided net (211) is in contact with the outer wall of the support member (22), and the braided net (211) is in contact with the inner wall of the accommodating cavity (121).

2. The coaxial connector crimping structure according to claim 1, characterized in that: The main body (11) is provided with a plug hole (111), the plug hole (111) being in communication with the accommodating cavity (121), and the plug hole (111) being used for allowing the wire body (2) to pass through so that the connection terminal (3) in the wire body (2) is electrically connected to the conductive terminal (4) in the connecting body (1).

3. The coaxial connector crimping structure according to claim 2, characterized in that: The diameter of the plug hole (111) is smaller than the diameter of the accommodating cavity (121).

4. The coaxial connector crimping structure according to claim 2, characterized in that: The wire body (2) further comprises a second insulating portion (23), the second insulating portion (23) and the first insulating portion (21) are fixedly connected, and the diameter of the second insulating portion (23) is greater than the diameter of the first insulating portion (21).

5. The coaxial connector crimping structure according to claim 4, characterized in that: The wire body (2) further comprises a third insulating portion (24), wherein the third insulating portion (24) is arranged on an end of the first insulating portion (21) away from the second insulating portion (23), and a diameter of the third insulating portion (24) is smaller than a diameter of the first insulating portion (21).

6. The coaxial connector crimping structure according to claim 5, characterized in that: The first insulating part (21), the second insulating part (23) and the third insulating part (24) are all integral parts.

7. The coaxial connector crimping structure according to any one of claims 1 to 6, characterized in that: The support member (22) is a copper ring.

8. The coaxial connector crimping structure according to claim 4, characterized in that: It also comprises a waist-shaped spring leaf (5), wherein the waist-shaped spring leaf (5) is embedded in one end of the main body (11) away from the wire body (2), and the waist-shaped spring leaf (5) is in a waist-shaped cylindrical structure that is thin in the middle and gradually thick at both ends.

9. The coaxial connector crimping structure according to claim 8, characterized in that: A plurality of hollow grooves (51) are provided on the surface of the waist-shaped spring leaf (5), and the plurality of hollow grooves (51) are arranged at equal intervals along the surface of the waist-shaped spring leaf (5).

10. The coaxial connector crimping structure according to claim 8, characterized in that: The surface of the waist-shaped spring leaf (5) is provided with a groove (52).

Images