Cable Crimp Connectors

Abstract

The utility model provides a cable crimping connector, including a connector body, on which are installed: a first crimping ring, sleeved with the outer conductor of the cable; a second crimping ring, sleeved with the outer sheath of the cable; a first extrusion head, applying pressure to the first crimping ring, so that the first crimping ring is deformed and presses the outer conductor; a second extrusion head, applying pressure to the second crimping ring, so that the second crimping ring is deformed and presses the outer sheath. The first crimping ring applies pressure to the outer conductor and generates friction through its deformation, and the second crimping ring applies pressure to the outer sheath and generates friction through its deformation, thereby increasing the contact area between the connector body and the cable, increasing the connection strength, and increasing the relative stability, so that the product meets the requirements of low passive intermodulation (PIM).

Description

Technical Field

[0001] The utility model relates to the technical field of cable connectors, in particular to a cable crimping connector. Background Art

[0002] Chinese patent CN204118383U discloses a coaxial cable crimping connector, which is provided with a spring sheet, which is located at the junction of the end of the shell and the inner end face of the cable clamp and is pressed or fixed on the end face of the shell. The inner ring of the spring sheet is formed with at least four elastic petals that act on the outer ring of the outer conductor of the cable, and the elastic petals are always in contact with the outer conductor of the cable. Even if the cable shakes greatly, the above structural design ensures that the shaking amplitude of the contact end face of the connector and the cable is much smaller than the deformation of the elastic petals, so as to always ensure a good contact effect and ensure that its dynamic performance of three-medium intermodulation is excellent.

[0003] During use of the above connector, since the contact area between the spring sheet and the cable is small, the position stability of the cable is still not high and it is easy to move.

[0004] Therefore, how to improve the connection strength between the cable and the crimp connector has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In order to solve the technical problems in the background technology, the utility model discloses a cable crimping connector.

[0006] The utility model provides a cable crimping connector, comprising a connector body, on which are mounted:

[0007] The first pressing ring is used to sleeve the outer conductor of the cable;

[0008] The second pressure ring is used to sleeve the outer sheath of the cable;

[0009] A first extrusion head applies pressure to the first pressing ring, so that the first pressing ring is deformed and presses the outer conductor tightly;

[0010] The second extrusion head applies pressure to the second pressing ring, causing the second pressing ring to deform and press the outer skin.

[0011] The first pressure ring applies pressure to the outer conductor and generates friction through its deformation, and the second pressure ring applies pressure to the outer skin and generates friction through its deformation. As a result, the contact area between the connector body and the cable is larger, the connection strength is higher, and the relative stability is also higher, so that the product meets the requirements of low passive intermodulation (PIM).

[0012] Since the outer conductor is in the shape of a corrugated tube, the conventional first pressing ring is in a standard circular ring shape, with a small deformation, and it is difficult to stably press and fix the outer conductor. Based on this, a further improvement is that the first pressing ring includes a ring body, and its inner wall is provided with a plurality of rotationally symmetrical, inwardly protruding, and spaced protrusions, and the protrusions are connected to the outer conductor. The setting of the protrusions, due to their spaced arrangement, provides sufficient deformation space, thereby increasing the deformation, increasing the pressure on the outer conductor, and improving the connection strength.

[0013] Since the outer surface of the outer skin is smooth, in order to improve the connection strength between the second pressing ring and the outer skin, a further design is that the inner wall section of the second pressing ring is in an arc shape that bulges inwards. In this way, when the second pressing ring is pressed, it will actively bulge inwards, and when it deforms, the contact area with the outer skin becomes larger, thereby increasing the friction and improving the connection strength.

[0014] In order to further improve the connection strength between the second pressing ring and the outer skin, specifically: two second pressing rings are arranged in parallel.

[0015] If the second pressing rings are connected in sequence, their deformation is unstable and easily twisted, thereby reducing the connection strength between the second pressing ring and the outer skin. Based on this, a further improvement is that washers are arranged between the second pressing rings.

[0016] To facilitate the installation of the extrusion head, a further design is that the first extrusion head is connected to the joint body by an interference fit through extrusion; and the second extrusion head is connected to the joint body by an interference fit through extrusion.

[0017] The end of the wire is connected to a pin, which needs to be inserted into the insulating seat to achieve limiting and facilitate plugging and unplugging; in order to facilitate the accurate insertion of the pin into the insulating seat, a further design is: a limiting block and an insulating seat are installed in the first extrusion head; a positioning insulating plate is clamped on the limiting block, and the wire is sleeved so that the pin on the wire can be accurately inserted into the insulating seat.

[0018] Since the cable is easily subjected to axial force and produces axial movement, in order to further improve the position stability of the cable, specifically: the outer conductor is a spiral structure, and its end is threadedly connected with a positioning joint; the positioning joint is clamped between the limit block and the first pressure ring. In this way, the axial force on the cable will act on the positioning joint, and the position setting of the positioning joint has a higher installation strength, so that the position of the cable is more stable and less prone to axial movement. In addition, the threaded connection setting also facilitates the connection of the positioning joint with the cable.

[0019] When the limit block has a processing error or an assembly error, there will be a coaxial deviation, and the pin will be difficult to accurately insert into the insulating seat. Based on this, a further improvement is that the limit block is composed of a connecting ring and a limit ring that abut against each other; the connecting ring is fixedly connected to the first extrusion head. In this way, the limit ring can float and automatically adjust its position when pressed. Its specific structure is: a positioning block with a protrusion and a wedge-shaped cross section is provided at one end of the limit ring; a positioning hole with a wedge-shaped cross section is provided at one end of the positioning joint, which is used to clamp the positioning block to achieve the positioning of the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a front sectional view of the utility model;

[0022] Figure 2 It is a front cross-sectional view of the utility model connected to the cable;

[0023] Figure 3 is a front cross-sectional view of the first pressing ring;

[0024] Figure 4 It is the front cross-sectional view of the cable end;

[0025] In the figure: 1. connector body; 2. first pressure ring; 3. second pressure ring; 4. first extrusion head; 5. second extrusion head; 6. ring body; 7. gasket; 8. limit block; 9. insulating seat; 10. connecting ring; 11. limit ring; 12. positioning connector; 13. positioning block; 14. protrusion; 15. positioning hole; 16. positioning insulating plate; 20. outer conductor; 30. outer skin; 40. wire; 50. pin; 60. medium. DETAILED DESCRIPTION

[0026] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0027] Embodiment 1:

[0028] The utility model discloses a cable crimping connector, comprising a connector body 1, which is connected to the end of a cable. Figure 4 As shown, this cable is a PIM test cable, including an outer sheath 30, an outer conductor 20, a dielectric 60 and a wire 40 arranged from the outside to the inside. The end of the wire 40 is connected to a pin 50. The outer conductor 20 is a spiral structure. When the cable is connected, its end is cut to expose the wire 40 and the outer conductor 20 in sequence.

[0029] like Figure 1 and Figure 2As shown, a first concave platform is provided at one end of the inner hole of the joint body 1, and a second concave platform is provided at the other end. A first pressing ring 2 is clamped on the first concave platform to realize the installation and positioning of the first pressing ring 2; a second pressing ring 3 is clamped on the second concave platform to realize the installation and positioning of the second pressing ring 3. Both the first pressing ring 2 and the second pressing ring 3 are made of rubber.

[0030] The exposed outer conductor 20 is threadedly connected with a positioning joint 12, one end of which abuts against the first pressing ring 2. In this way, the axial force on the cable will act on the positioning joint 12, and the position setting of the positioning joint 12 has a higher installation strength, so that the position of the cable is more stable and not prone to axial movement. In addition, the threaded connection setting also facilitates the connection of the positioning joint 12 with the cable.

[0031] One end of the connector body 1 is connected to a first extrusion head 4, which is squeezed into the connector body 1 by a press, so as to facilitate installation. The inner wall of the first extrusion head 4 is provided with a clamping platform, which is clamped with an insulating seat 9. The insulating seat 9 is used to limit the insertion of the pin 50, and the root diameter of the pin 50 is larger than the inner diameter of the insulating seat 9, so that the pin 50 is clamped with the insulating seat 9, which is used to control the insertion depth of the pin 50.

[0032] The inner end of the first extrusion head 4 is clamped with a limit block 8, and a positioning insulating plate 16 is clamped on the limit block 8, and the positioning insulating plate 16 is clamped between the first extrusion head 4 and the limit block 8 to achieve fixation. The wire 40 passes through the positioning insulating plate 16 to achieve positioning, so that the pin 50 can be stably inserted into the insulating seat 9.

[0033] When the first extrusion head 4 is installed, it sequentially applies pressure to the limit block 8, the positioning block 13, the positioning joint 12 and the first pressing ring 2 to fix them. When the first pressing ring 2 is pressed, it deforms and bulges inward to press the outer conductor 20. When the first extrusion head 4 is installed, it also applies pressure to the insulating seat 9 and the plug pin 50 to fix the wire 40. The above arrangement makes the utility model simple in structure and easy to install.

[0034] like Figure 3 As shown, the first pressing ring 2 includes a ring body 6, the inner wall of which is provided with a plurality of rotationally symmetrical, inwardly protruding, spaced projections 14. The arrangement of the projections 14, due to their spaced arrangement, provides sufficient deformation space, thereby increasing the deformation amount, increasing the pressure on the external conductor 20, and improving the connection strength. The cross section of the projection 14 is an isosceles trapezoid, and its thickness decreases from the root to the end, so that when the first pressing ring 2 is deformed, it has a tendency to protrude inward, making its deformation more stable.

[0035] The other end of the connector body 1 is connected to a second extrusion head 5, which is squeezed into the connector body 1 by a press, making it easy to install. When the second extrusion head 5 is installed, it applies pressure to the second pressing ring 3, causing the second pressing ring 3 to deform and bulge inward, pressing the outer skin 30. The inner wall cross-section of the second pressing ring 3 is an arc that bulges inward. With this arrangement, when the second pressing ring 3 is pressurized, it will actively bulge inward, and when it is deformed, the contact area with the outer skin 30 becomes larger, thereby increasing the friction and improving the connection strength.

[0036] The first pressing ring 2 applies pressure to the outer conductor 20 and generates friction through its deformation, and the second pressing ring 3 applies pressure to the outer skin 30 and generates friction through its deformation. As a result, the contact area between the connector body 1 and the cable is larger, the connection strength is higher, and the relative stability is also higher, so that the product meets the requirements of low passive intermodulation (PIM).

[0037] Embodiment 2:

[0038] Compared with the first embodiment, the difference is that the limit block 8 is composed of a connecting ring 10 and a limit ring 11 that abut against each other; the connecting ring 10 is connected to the first extrusion head 4; the limit ring 11 is connected to the connecting ring 10. In this way, the limit ring 11 can float and automatically adjust its position when pressed. Its specific clamping structure is: a convex positioning block 13 with a wedge-shaped cross section is provided at one end of the limit ring 11; a positioning hole 15 with a wedge-shaped cross section is provided at one end of the positioning joint 12, which is used to clamp the positioning block 13 to realize the positioning of the limit ring 11.

[0039] Embodiment 4:

[0040] Compared with the first embodiment, the difference is that two second pressing rings 3 are arranged in parallel, so that the connection strength between the second pressing ring 3 and the outer skin 30 is higher.

[0041] A gasket 7 is arranged between the second pressing rings 3 to separate the two second pressing rings 3 so that both sides of the second pressing rings 3 are in hard contact. When a second pressing ring 3 is deformed, it will not be affected by another second pressing ring 3, and the deformation is more stable.

[0042] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A cable crimping connector, comprising a connector body (1), characterized in that: The joint body (1) is provided with: A first pressing ring (2) is sleeved with an outer conductor (20) of a cable; A second pressing ring (3) is sleeved on the outer skin (30) of the cable; A first extrusion head (4) applies pressure to the first pressing ring (2), so that the first pressing ring (2) is deformed and presses the outer conductor (20); The second extrusion head (5) applies pressure to the second pressing ring (3), so that the second pressing ring (3) is deformed and presses the outer skin (30).

2. The cable crimping connector according to claim 1, characterized in that: The first pressing ring (2) comprises a ring body (6), the inner wall of which is provided with a plurality of rotationally symmetrical, inwardly protruding, and spaced-apart protrusions (14), wherein the protrusions (14) are connected to an outer conductor (20).

3. The cable crimping connector according to claim 1, characterized in that: The inner wall cross section of the second pressing ring (3) is in the shape of an arc convex inwards.

4. The cable crimping connector according to claim 3, characterized in that: The second pressing rings (3) are arranged in two parallel rows.

5. The cable crimping connector according to claim 4, characterized in that: A gasket (7) is arranged between the second pressure rings (3).

6. The cable crimping connector according to claim 1, characterized in that: The first extrusion head (4) is connected to the joint body (1) by means of extrusion and interference fit; The second extrusion head (5) is connected to the joint body (1) by means of extrusion through interference fit.

7. The cable crimping connector according to claim 6, characterized in that: A limit block (8) and an insulating seat (9) are installed in the first extrusion head (4); The limiting block (8) is clamped with a positioning insulating plate (16) which sleeves the electric wire (40) so that the plug pin (50) on the electric wire (40) can be accurately plugged into the insulating seat (9).

8. The cable crimping connector according to claim 7, characterized in that: The outer conductor (20) is a spiral structure, and the end of the outer conductor (20) is threadedly connected to a positioning joint (12); The positioning joint (12) is clamped between the limiting block (8) and the first pressing ring (2).

9. The cable crimping connector according to claim 8, characterized in that: The limit block (8) is composed of a connecting ring (10) and a limit ring (11) which abut against each other; The connecting ring (10) is connected to the first extrusion head (4).

10. The cable crimping connector according to claim 9, characterized in that: One end of the limiting ring (11) is provided with a protruding positioning block (13) with a wedge-shaped cross section; One end of the positioning joint (12) is provided with a positioning hole (15) with a wedge-shaped cross section, which is used to clamp the positioning block (13) to achieve the positioning of the limiting ring (11).

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