Coaxial cable shielding terminal and coaxial cable connector

Abstract

The invention provides a coaxial cable shielding terminal and a coaxial cable connector, and relates to the technical field of communication equipment connection, and the coaxial cable shielding terminal comprises an installation part connected with a connector, and an accommodation part which is fixed with the right end of the installation part in a screwing manner and is used for being fixed with a coaxial cable. The containing part comprises a tail shell used for being fixed with a coaxial cable, a head shell used for being in threaded connection with the mounting part, and an inner pressing ring which is arranged in the tail shell and can do linear displacement relative to the axis of the tail shell, and the mounting part comprises a wire pressing ring used for fixing an internal wire of the coaxial cable. The pressing ring extends along the axial direction of the left end of the wire pressing ring, and the limiting ring with the conical peripheral wall extends inwards along the radial direction at one end, close to the mounting part, of the tail shell, so that the terminal and a shielding layer of the cable are encircled and fixed, the loss of the shielding layer is avoided, and meanwhile, the terminal can be firmly fixed outside the cable; and the anti-interference capability and the connection firmness of the shielding layer at the joint are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of communication equipment connection, and in particular to a coaxial cable shielding terminal and a coaxial cable connector. Background Art

[0002] Coaxial cable is based on ordinary cable, and a shielding layer made of metal braided layer or metal armor layer is set on the outside of the cable. It can effectively isolate external electromagnetic interference and prevent the current inside the cable from affecting the external environment. Coaxial cable has excellent electromagnetic shielding effect, can resist external interference, ensure the stability of model transmission, and is suitable for many fields. When connecting coaxial cable to equipment, it needs to be connected through terminals. At this time, the terminal needs to be connected to the cable shielding layer to form a coaxial cable shielding terminal with shielding function.

[0003] When the coaxial cable shield terminal is connected to the cable, it needs to surround it 360 degrees and connect to the cable's shielding layer to ensure the shield's anti-interference ability. The traditional coaxial cable shield terminal will partially strip off the cable's shielding layer and use a metal ring to clamp it inside the terminal to achieve the surrounding of the terminal and the shielding layer. However, when the clamping part inside the terminal is connected to the shielding layer, the clamping part squeezes the shielding layer, causing the shielding layer at the connection to be excessively folded and broken, affecting the shielding effect. Some terminals rely entirely on the clamping connection between the terminal and the shielding layer to achieve the fixation of the terminal and the cable. Such terminals not only have poor shielding effect, but also the terminal and the shielding layer are easy to separate and fall off, making it impossible for the terminal to fix the cable to the connector, affecting signal transmission. Some rely on the deformation of the metal shell at the connection between the terminal and the shielding layer to connect. When the metal shell is deformed, it will squeeze the shielding layer, causing the shielding layer to be damaged, affecting the shield's anti-interference ability. Summary of the Invention

[0004] The object of the present invention is to provide a coaxial cable shielding terminal and a coaxial cable connector, which can complete the surrounding fixation of the terminal and the shielding layer of the cable without clamping and bending the shielding layer and the terminal, without causing damage to the shielding layer. At the same time, the terminal can be firmly fixed outside the cable, ensuring the anti-interference ability of the shielding layer at the connection and the firmness of the connection.

[0005] A first aspect of the present invention relates to a coaxial cable shielding terminal, comprising: a mounting portion for connecting a connector; an accommodating portion screwed and fixed to the mounting portion and used to be fixed to the coaxial cable, the accommodating portion comprising a tail shell used to be fixed to the coaxial cable and a head shell used to be threadedly connected to the mounting portion; An inner pressure ring disposed in the tail housing and capable of linear displacement relative to the axis of the tail housing; The mounting portion includes a wire pressing ring for fixing the inner conductor of the coaxial cable, and a wire pressing ring extending in the axial direction of the wire pressing ring; The tail housing is close to the mounting portion and extends radially inwardly at one end thereof to form a limiting ring with a tapered peripheral wall. The middle section of the tail seat of the tail housing is extended radially inwardly to form a rib, and a connecting ring is extended in a direction perpendicular to the rib and toward both ends in the axial direction. The inner pressure ring includes a clamping barrel and an anti-slip barrel with a tapered peripheral wall; When the coaxial cable is installed with the accommodating portion and the mounting portion, the connecting ring pushes the clamp barrel to move, and the limiting ring pushes out the end of the clamp barrel close to the mounting portion, so that the clamp barrel is offset toward the pressure ring toward one end of the limiting ring, thereby allowing the clamp barrel and the pressure ring to complete the fixation of the cable, and the anti-detachment barrel is used to reinforce the connection between the coaxial cable and the accommodating portion.

[0006] Compared with the prior art, the coaxial cable shielding terminal of the present invention extends the pressure ring between the cable shielding layer and the PE layer for clamping and padding, completing the 360-degree ring connection between the terminal shielding part and the cable shielding layer. When the installation part is connected to the accommodating part, the installation part pushes and squeezes the clamping barrel, so that the clamping barrel and the pressure ring clamp the cable, and there is no need to fold and squeeze the cable shielding layer, thereby avoiding damage and destruction to the cable shielding layer. When the coaxial cable is separated from the terminal, the anti-detachment barrel squeezes the coaxial cable to prevent the coaxial cable from being separated from the terminal under the action of external force.

[0007] In some embodiments, the wire pressing ring extends perpendicularly to the wire pressing ring and is sequentially provided with a pressure ring, an outer retaining ring and a mounting ring in a radial direction. The outer retaining ring has a conical circumferential wall, and the inner side of the mounting ring is provided with a thread for connecting with the head shell.

[0008] In some embodiments, a mating ring is formed on the first seat of the first shell along a side close to the mounting ring, and a thread corresponding to an inner thread of the mounting ring is configured on the outer side of the mating ring for threaded connection with the mounting ring.

[0009] In some embodiments, the first seat extends inwardly in the radial direction to form an annular rib, and the rib extends in the axial direction near one end of the outer retaining ring to form an inner retaining ring, and the conical circumferential wall of the inner retaining ring corresponds to the conical circumferential wall of the outer retaining ring, and the center lines of the cross sections are parallel.

[0010] The coaxial cable shielding terminal of the present invention has an inner clamping ring and an outer clamping ring with tapered cross-sections, and the cross-sectional busbars are parallel but not in contact, which is a space reserved for the extended shielding layer. The extended shielding layer is stored in the reserved space and will not be broken due to extrusion.

[0011] In some embodiments, the tail shell is threadedly connected to the end of the first seat away from the mounting portion through the tail seat, and a first flange body is provided at both ends of the connecting ring of the tail shell. The first flange body is constructed on both sides of the connecting ring, and the end of the tail shell away from the first seat extends inward in the radial direction to form an anti-slip ring with a tapered circumferential wall, and the inner diameter of the anti-slip ring gradually decreases along the axial direction close to the end of the connecting ring.

[0012] In some embodiments, a groove for accommodating the connecting ring is provided at one end of the clamping barrel of the inner pressure ring close to the connecting ring, and the groove divides the end of the clamping barrel close to the connecting ring into an outer ring and an inner ring, the outer ring is an outer connecting ring, and the inner ring is an inner connecting ring, and the inner sides of the outer connecting ring and the inner connecting ring are respectively constructed with a second flange body and a third flange body, and the connecting ring is clamped in the outer connecting ring and the inner connecting ring through the second flange body and the third flange body.

[0013] In some embodiments, a groove for accommodating the connecting ring is provided at one end of the anti-slip barrel of the inner pressure ring close to the connecting ring, and the groove divides the anti-slip barrel close to the connecting ring into an outer ring and an inner ring, the outer ring is an outer connecting ring, and the inner ring is an inner connecting ring, and the inner sides of the outer connecting ring and the inner connecting ring are respectively constructed with a second flange body and a third flange body, and the connecting ring is clamped in the outer connecting ring and the inner connecting ring through the second flange body and the third flange body.

[0014] The coaxial cable shielding terminal of the present invention has a structure that when the terminal and the coaxial cable are installed, the clamping barrel is displaced and cooperates with the pressure ring to press the cable sheath and the shielding layer to achieve reinforcement. At the same time, the anti-slip ring squeezes the anti-slip barrel to press the coaxial cable sheath to prevent the coaxial cable from separating from the terminal, thereby greatly improving the stability of the connection between the coaxial cable and the terminal.

[0015] The coaxial cable shielding terminal of the present invention can be installed by directly pressing the clamp barrel into the tailstock so that the groove at the tail end of the clamp barrel and the connecting ring are clamped and fixed to achieve the purpose. The clamp barrel and the tailstock are integrated into one part, which reduces the number of parts and avoids the complicated operation process caused by the large number of parts when connecting the terminal to the cable. In addition, too many parts are easily lost during installation, which affects the construction efficiency.

[0016] In some embodiments, the inner side surface of the limiting ring is in contact with the surface of the clamping barrel, and the clamping barrel can slide along the inner side surface of the limiting ring.

[0017] In some embodiments, the inner side of the anti-slip ring fits against the surface of the anti-slip barrel, and the anti-slip barrel can slide along the inner side of the anti-slip ring. The coaxial cable shielding terminal of the present invention, with the help of the pushing force of the connecting ring on the clamp barrel and the radial inward pushing force of the inner inclined surface of the limiting ring on the clamp barrel, can push the clamp barrel to move while pushing the tail stock, and apply radial inward pushing force to the clamp barrel, so that the clamp barrel squeezes the cable, completing the fixation between the clamp barrel and the cable, and after the clamp barrel and the cable are squeezed, the friction between the clamp barrel and the cable is increased, and the terminal and the cable will not be separated due to the external force applied to the cable during use, thereby increasing the firmness of the connection and not causing damage to the coaxial cable and its shielding layer.

[0018] In some embodiments, the mounting portion further includes a protective ring, a positioning ring, and a nut arranged on the back side of the pressure ring. The protective ring is configured as a hollow tube body for allowing the cable core to pass through. The positioning ring is used for positioning when connected to the connector. The nut is rotatably arranged on the outside of the pressure ring for connecting to the connector.

[0019] Another aspect of the present disclosure relates to a coaxial cable connector, comprising the above-mentioned coaxial cable shielding terminal.

[0020] Based on the above technical solution, the present invention has at least the following beneficial effects: The coaxial cable shielding terminal of the present invention extends the pressure ring into the shielding layer of the coaxial cable, utilizes the inclined surface of the contact between the clamping barrel and the limit ring, causes the coaxial cable to displace due to the friction generated by the coaxial cable and the cable surface when moving, and converts the friction force into pressure on the clamping barrel by the limit ring, so that the clamping barrel presses the cable tightly and cooperates with the pressure ring to complete the fastening connection of the cable shielding layer, avoiding the occurrence of gaps in the shielding layer during connection and affecting the anti-interference ability of the coaxial cable shielding layer. When the cable is subjected to a force away from the terminal, the friction force also causes the cable to drive the anti-slip barrel to displace, so that the anti-slip ring applies pressure to the anti-slip barrel through the inclined surface in contact with the anti-slip barrel, so that the anti-slip barrel is tightly pressed against the surface of the coaxial cable, preventing the coaxial cable from detaching from the terminal, and utilizing the gap formed between the outer clamping ring, the inner clamping ring and the matching ring to store the reserved cable shielding layer without squeezing the cable shielding layer, ensuring that it will not break, and will not affect the fixation of the cable and the terminal, thereby greatly improving the stability of the connection between the terminal and the cable and the anti-interference ability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are intended to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute undue limitations on the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall appearance structure of the present invention; Figure 2 It is a structural schematic diagram of the present invention from an exploded perspective; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is a schematic cross-sectional view of the coaxial cable shielding terminal of the present invention after being connected to the cable; Figure 5 This is a schematic cross-sectional view of the anti-slip ring squeezing the anti-slip barrel when connecting a cable according to the present invention; Figure 6 This is a schematic cross-sectional view of the clamp barrel being squeezed by the limiting ring when connecting a cable according to the present invention; Figure 7 For the present invention Figure 6 A schematic cross-sectional structure diagram of an enlarged perspective at point A; Figure 8 It is a schematic diagram of the cross-sectional structure of the mounting portion of the present invention.

[0022] The reference numerals in the accompanying drawings are described as follows: 10. Mounting part; 11. Wire pressing ring; 12. Protective ring; 13. Positioning ring; 14. Pressing ring; 15. External retaining ring; 16. Mounting ring; 17. Nut; 20. Accommodation portion; 30. Tail housing; 31. Tailstock; 32. Anti-slip ring; 33. Limiting ring; 34. Connecting ring; 35. First flange body; 40. First shell; 41. First seat; 42. Matching ring; 43. Inner snap ring; 50. Inner pressure ring; 51. Clamp barrel; 52. Outer connecting ring; 53. Inner connecting ring; 54. Second flange; 55. Third flange; 56. Anti-drop barrel; 61. Coaxial cable; 62. Protective layer; 63. Shielding layer; 64. Iron core.

[0023] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. Technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the accompanying drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] In the related technical field, the tail of the terminal is first put on the outside of the cable, and a conical metal ring and a corresponding open trumpet ring are used. The shielding layer of the cable is first peeled off, and the shielding layer is folded back to the outside of the conical metal ring. Then the trumpet-shaped metal ring is put on the outside of the folded shielding layer, so that the conical metal ring and the trumpet-shaped metal ring are put on to complete the connection of the shielding layer. Then the end cap of the head is connected to the tail to fix the terminal and the cable together. The tail of the terminal is provided with a stabilizing part to strengthen the connection between the terminal and the cable.

[0027] During the research process, the inventor discovered that when the shielding layer is folded back and the shielding layer is squeezed and fixed using a conical metal ring and a trumpet-shaped metal ring, the ports of the conical metal ring and the trumpet-shaped metal ring will excessively squeeze the metal shielding layer and cause it to break during long-term squeezing, resulting in a fracture at the connection between the terminal and the shielding layer, affecting the anti-interference ability of the shielding layer. At the same time, at the connection between the terminal and the cable, due to the action of long-term external force, the cable will be affected by the force away from the terminal, further pulling the metal shielding layer, aggravating the fracture of the shielding layer at the connection, and affecting the anti-interference ability of the connection.

[0028] Based on the above findings, the present application proposes a shielding terminal for a coaxial cable and a coaxial cable connector using the shielding terminal.

[0029] Reference below Figures 1 to 8 The coaxial cable shielding terminal of some embodiments of the present application is described in detail. The coaxial cable shielding terminal of some embodiments of the present application is used to connect to the mounting portion 10 of the connector; An accommodating portion 20 screwed and fixed to the mounting portion 10 for fixing to the coaxial cable 61, the accommodating portion 20 comprising a tail shell 30 for fixing to the coaxial cable and a head shell 40 for threaded connection to the mounting portion 10; An inner pressure ring 50 disposed in the tail housing 30 and capable of linear displacement relative to the axis of the tail housing 30; In some embodiments, the mounting portion 10 includes a wire pressing ring 11 for fixing the inner conductor of the coaxial cable 61, and a pressure ring 14 extending along the axial direction of the wire pressing ring 11; In some embodiments, a limiting ring 33 with a tapered peripheral wall is formed inwardly extending radially from one end of the tail housing 30 near the mounting portion 10. A rib is formed inwardly extending radially from the middle section of the tail base 31 of the tail housing 30. A connecting ring 34 is formed inwardly extending in a direction perpendicular to the rib and toward both ends in the axial direction. In some embodiments, the inner pressure ring 50 includes a clamping barrel 51 having a tapered peripheral wall and an anti-slip barrel 56; In some embodiments, when the coaxial cable 61 is installed with the accommodating portion 20 and the mounting portion 10, when the connecting ring 34 pushes the clamp barrel 51 to move, the limiting ring 33 pushes the clamp barrel 51 out of the end close to the mounting portion 10, so that the clamp barrel 51 is offset toward the pressure ring 14 toward one end of the limiting ring 33, thereby allowing the clamp barrel 51 and the pressure ring 14 to complete the fixation of the cable, and the anti-detachment barrel 56 is used to strengthen the connection between the coaxial cable 61 and the accommodating portion 20.

[0030] In the present invention, the pressure ring 14 extends between the cable shielding layer 63 and the inner protective layer 62 (such as PE, armor layer or other inner protective layer), completing the 360-degree ring connection between the pressure ring 14 and the cable shielding layer 63. When the mounting portion 10 is connected to the accommodating portion 20, the connecting ring 34 of the accommodating portion 20 will push the clamping barrel 51 to make a horizontal displacement. The inner side of the limiting ring 33 is an inclined surface with a radius gradually decreasing toward one end of the mounting portion 10. At this time, the clamping barrel 51 will move close to the inner inclined surface of the limiting ring 33 under the action of the connecting ring 34. The clamp barrel 51 moves and continuously squeezes the cable that is fitted inwardly in the radial direction toward the clamp barrel 51. Under the action of the squeezing force of the clamp barrel 51 on the coaxial cable 61, the clamp barrel 51 and the pressure ring 14 complete the squeezing of the cable sheath and the cable shielding layer 63 therebetween, so that the pressure ring 14 and the cable shielding layer 63 fit tightly around 360 degrees. The clamp barrel 51 and the coaxial cable 61 fit tightly to complete the connection between the accommodating portion 20 and the coaxial cable 61. The accommodating portion 20 and the mounting portion 10 are tightened, and the mounting portion 10 limits the accommodating portion 20. In the present invention, during installation, the coaxial cable 61 is first passed through the accommodating portion 20, and then the position of the accommodating portion 20 is adjusted so that the cable break is close to the accommodating portion 20. At this time, the cable and the accommodating portion 20 move in opposite directions, and the friction between the coaxial cable 61 and the anti-slip barrel 56 drives the anti-slip barrel 56. The direction of the friction force is opposite to the moving direction of the anti-slip barrel 56. At this time, the anti-slip barrel 56 moves along the tapered peripheral wall of the anti-slip ring 32, and the anti-slip ring 32 will squeeze the anti-slip barrel 56, so that the anti-slip barrel 56 squeezes the outer skin of the coaxial cable 61. The greater the displacement, the stronger the squeezing force, and the more stable the connection between the accommodating portion 20 and the coaxial cable 61.

[0031] refer to Figure 4 and Figure 8 In some embodiments, the wire pressing ring 11 extends perpendicular to the wire pressing ring 11 and is sequentially provided with a pressing ring 14, an outer clamping ring 15 and a mounting ring 16 in the radial direction. The outer clamping ring 15 has a tapered circumferential wall, and the inner side of the mounting ring 16 is provided with a thread for connecting with the head shell 40. The pressing ring 14 can separate the cable shielding layer 63 and the protective layer 62 adjacent to the inner side of the shielding layer 63, and with the help of the extrusion force of the outer skin of the coaxial cable 61 and in cooperation with the installed clamping barrel 51, the shielding layer 63 is 360 degrees connected without damaging the shielding layer 63.

[0032] In some embodiments, a mating ring 42 is formed on the first seat 41 of the first shell 40 along one side close to the mounting ring 16 . The outer side of the mating ring 42 is configured with threads corresponding to the inner threads of the mounting ring 16 for threaded connection with the mounting ring 16 .

[0033] refer to Figure 3 and Figure 4 In some embodiments, the first seat 41 extends inward in the radial direction to form an annular rib, and the rib extends in the axial direction at one end close to the outer retaining ring 15 to form an inner retaining ring 43. The conical circumferential wall of the inner retaining ring 43 corresponds to the conical circumferential wall of the outer retaining ring 15, and the generatrix of the cross section is parallel. After installation, the outer retaining ring 15 corresponds to the conical circumferential wall of the inner retaining ring 43, and the generatrix of the cross section is parallel, but the two do not contact each other, and a space for accommodating the shielding layer 63 is formed between the inner retaining ring 43 and the outer retaining ring 15. Since there is no contact, no extrusion pressure is applied to the shielding layer 63, and the shielding layer 63 will not be broken after folding and extrusion, thereby affecting the shielding effect.

[0034] refer to Figure 3 and Figure 7 In some embodiments, the tail housing 30 is threadedly connected to the end of the head seat 41 away from the mounting portion 10 through the tail seat 31, and both ends of the connecting ring 34 of the tail housing 30 are provided with a first flange body 35. The first flange body 35 is constructed on both sides of the connecting ring 34. The end of the tail housing 30 away from the head seat 41 extends inward in the radial direction to form an anti-slip ring 32 with a tapered circumferential wall, and the inner diameter of the anti-slip ring 32 gradually decreases along the axial direction close to the end of the connecting ring 34.

[0035] refer to Figure 7In some embodiments, a groove for accommodating the connecting ring 34 is opened at one end of the clamp barrel 51 of the inner pressure ring 50 close to the connecting ring 34. The groove divides the end of the clamp barrel 51 close to the connecting ring 34 into an outer ring and an inner ring. The outer ring is an outer connecting ring 52, and the inner ring is an inner connecting ring 53. The inner sides of the outer connecting ring 52 and the inner connecting ring 53 are respectively constructed with a second flange body 54 and a third flange body 55. The outer connecting ring 52 and the inner connecting ring 53 are clamped with the connecting ring 34 through the second flange body 54 and the third flange body 55. The clamp barrel 51 can move relative to the connecting ring 34. The first flange 35 of the connecting ring 34, the second flange 54 of the outer connecting ring 52, and the third flange 55 of the inner connecting ring 53 cooperate with each other. When the clamp barrel 51 is connected to the connecting ring 34, the first flange 35 squeezes the second flange 54 and the third flange 55 and then extends into between the outer connecting ring 52 and the inner connecting ring 53. When the clamp barrel 51 and the connecting ring 34 move in opposite directions, the first flange 35 and the second flange 54 come into contact and limit the second flange 54, thereby preventing the clamp barrel 51 from separating from the connecting ring 34.

[0036] refer to Figure 7 In some embodiments, a groove for accommodating the connecting ring 34 is provided at one end of the anti-slip barrel 56 of the inner pressure ring 50 close to the connecting ring 34. The groove divides the anti-slip barrel 56 close to the connecting ring 34 into an outer ring and an inner ring. The outer ring is the outer connecting ring 52, and the inner ring is the inner connecting ring 53. The inner sides of the outer connecting ring 52 and the inner connecting ring 53 are respectively constructed with a second flange body 54 and a third flange body 55. The connecting ring 34 is clamped in the outer connecting ring 52 and the inner connecting ring 53 through the second flange body 54 and the third flange body 55. The anti-slip barrel 56 can move relative to the connecting ring 34. Similarly, the anti-slip barrel 56 can be fixed on the connecting ring 34 through the first flange body 35, the second flange body 54 and the third flange body 55, and the anti-slip barrel 56 is limited to prevent it from detaching.

[0037] refer to Figure 4 、 Figure 5 and Figure 6 In some embodiments, the inner side of the limiting ring 33 fits with the surface of the clamp barrel 51, and the clamp barrel 51 can slide along the inner side of the limiting ring 33. The dotted line a and the dotted line b are the inner reference lines of the terminal. Figure 5 and Figure 6 It is divided into two areas, B and C. Area B is the cable accommodation area, which is used to accommodate and fix the cables. Area C is the terminal area, which is used to indicate the position of the various components of the terminal.

[0038] In some embodiments, the inner side surface of the anti-slip ring 32 fits against the surface of the anti-slip barrel 56 , and the anti-slip barrel 56 can slide along the inner side surface of the anti-slip ring 32 .

[0039] refer to Figure 4 and Figure 6 In this embodiment, the inner side surface of the limiting ring 33 fits the inner side surface of the clamping barrel 51, and the contact surfaces of the two are inclined surfaces relative to the axial direction of the limiting ring 33. The tail stock 31 is sleeved on the outside of the coaxial cable 61. When the tail stock 31 moves in the opposite direction of the cable port, the connecting ring 34 pushes the clamping barrel 51 to move. The inclined surface of the limiting ring 33 applies pressure perpendicular to the contact surface to the moving clamping barrel 51, thereby pressing the clamping barrel 51 against the cable surface. Figure 6 At this time, part of the clamp barrel 51 crosses the dotted lines a and b, and enters the B area from the C area, that is, from the terminal area into the cable accommodating area, so that the clamp barrel 51 can apply pressure to the cable. At the same time, since part of the clamp barrel 51 will overlap with the pressure ring 14 in the radial direction when moving, a force-bearing structure will be formed in which the clamp barrel 51 and the pressure ring 14 jointly squeeze the cable skin and the cable shielding layer 63, so that the clamp barrel 51 completes the fastening of the contact between the pressure ring 14 and the shielding layer 63.

[0040] refer to Figure 4 and Figure 5 In this embodiment, similar to the structure of the cooperation between the clamp barrel 51 and the limit ring 33, when the tail stock 31 moves toward the cable port, under the action of the friction between the anti-slip barrel 56 and the coaxial cable 61, a friction force opposite to the moving direction of the tail stock 31 is applied to the anti-slip barrel 56. This friction force hinders the displacement of the anti-slip barrel 56, thereby applying a force pressing toward the coaxial cable 61 on the inclined surface where the anti-slip ring 32 contacts the anti-slip barrel 56, so that the anti-slip barrel 56 is tightly pressed on the outer skin of the coaxial cable 61. Figure 5 At this time, part of the anti-slip barrel 56 crosses the dotted lines a and b and enters area B from area C, thereby squeezing the coaxial cable 61 and increasing the friction and pressure between the anti-slip barrel 56 and the outer skin of the coaxial cable 61, preventing the coaxial cable 61 from separating from the anti-slip barrel 56. In other words, when the tail stock 31 moves toward the cable port, the anti-slip ring 32 will exert a force on the anti-slip barrel 56 to press the coaxial cable 61, so that the tail shell 30 is firmly fixed on the coaxial cable 61, preventing the coaxial cable 61 from separating from the terminal. At the same time, due to the limited plastic deformation of the inclined surface of the anti-slip barrel 56 and the inclined surface of the anti-slip ring 32, and the limited plastic deformation generated by the two, the anti-slip barrel 56 will not separate from the tail stock 31 in this movement mode.

[0041] In this embodiment, the clamping barrel 51 and the anti-slip barrel 56 are both made of silicone rubber. The silicone rubber used in this embodiment can produce partial deformation when squeezed, but will not produce adhesion due to long-term contact with the cable sheath.

[0042] In some embodiments, the mounting portion 10 also includes a protective ring 12, a positioning ring 13 and a nut 17 arranged on the back side of the pressure ring 14. The protective ring 12 is configured as a hollow tube body for allowing the cable core to pass through. The positioning ring 13 is used for positioning when connected to the connector. The nut 17 is rotatably arranged on the outside of the pressure ring 11 for connecting to the connector. The protective ring 12 is attached to the surface of the iron core 64 inside the coaxial cable 61 to prevent the iron core 64 from bending or breaking due to collision when the terminal is connected to the connector. The nut 17 is used to connect the terminal to the connector by rotating the nut 17 alone.

[0043] The coaxial cable connector of the embodiment of the present application includes any one of the above coaxial cable shielding terminals.

[0044] The coaxial cable shielding terminal of this embodiment is installed by first stripping the outer sheath of the cable to expose the iron core 64 and the cable shielding layer 63, pressing the end of the clamp barrel 51 connected to the head shell 40, so that the coaxial cable 61 passes through the tail shell 30 of the accommodating portion 20, but does not completely penetrate the tail shell 30. The outer sheath cut of the coaxial cable 61 is located in the middle section of the clamp barrel 51. During this period, the anti-slip ring 32 does not squeeze the anti-slip barrel 56, and the limiting ring 33 has no pressure on the clamp barrel 51. Continuously press the clamp barrel 51 to slowly push the coaxial cable 61 so that the cable shield The shielding layer 63 passes through the inner side of the inner clamping ring 43 of the first shell 40. Then, the cable shielding layer 63 is bent and bent in the direction toward one end of the anti-slip ring 32. The pressure ring 14 of the mounting portion 10 is extended between the cable shielding layer 63 and the protective layer 62, and the epidermis of the coaxial cable 61 is received in the receiving space formed between the inner clamping ring 43 and the outer clamping ring 15. After pushing the tail shell 30 and the head shell 40 in the direction toward the incision of the coaxial cable 61 for a certain distance, they are pulled together in the opposite direction to complete the connection between the head seat 41 and the tail seat 31. During the pulling process, due to the effect of friction, the clamp barrel 51 moves in the opposite direction relative to the tail shell 30, so that the limit ring 33 applies pressure to the clamp barrel 51, thereby causing the clamp barrel 51 to squeeze the cable sheath. At this time, the mounting portion 10 is twisted to connect the mounting portion 10 to one end of the head shell 40. During this period, the pressure ring 14 continuously extends between the cable shielding layer 63 and the protective layer 62, and cooperates with the clamp barrel 51 to clamp the cable shielding layer 63 and the outer skin between the pressure ring 14 and the clamp barrel 51, so that the pressure ring 14 and the cable shielding layer 63 are 360 ​​degrees around Contact, that is, the connection between the coaxial cable shielding terminal and the coaxial cable 61 is completed. When the coaxial cable 61 is subjected to the force of separation from the terminal, due to the friction between the outer skin of the coaxial cable 61 and the anti-separation barrel 56, the anti-separation barrel 56 will move in the opposite direction of the tail shell 30, so that the inclined surface of the anti-separation ring 32 squeezes the anti-separation barrel 56, and then the anti-separation barrel 56 squeezes the coaxial cable 61, making the contact between the coaxial cable 61 and the terminal more firm, avoiding the terminal and the coaxial cable 61 from being separated due to external force, affecting the signal transmission effect.

[0045] The coaxial cable shielding terminal of the present invention extends the pressure ring into the shielding layer of the coaxial cable, utilizes the inclined surface of the contact between the clamping barrel and the limit ring, causes the coaxial cable to be displaced by the friction force generated by the cable surface when moving, and converts the friction force into pressure on the clamping barrel by the limit ring, so that the clamping barrel presses the cable and cooperates with the pressure ring to complete the fastening connection of the cable shielding layer, avoiding the occurrence of gaps in the shielding layer during connection that affect the anti-interference ability of the coaxial cable shielding layer. When the cable is subjected to a force away from the terminal, the friction force also causes the cable to drive the anti-slip barrel to move, so that the anti-slip ring applies pressure to the anti-slip barrel through the inclined surface in contact with the anti-slip barrel, so that the anti-slip barrel is tightly pressed against the surface of the coaxial cable, preventing the coaxial cable from being separated from the terminal. The gap formed between the outer clamping ring, the inner clamping ring and the matching ring is utilized to store the reserved cable shielding layer without squeezing the cable shielding layer, ensuring that it will not be broken, and will not affect the fixation of the cable and the terminal, thereby greatly improving the stability of the connection between the terminal and the cable and the anti-interference ability of the connection.

[0046] Based on the above-mentioned embodiments of the present invention, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments. Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A coaxial cable shielding terminal, comprising: A mounting portion (10) for connecting a connector; an accommodating portion (20) screwed and fixed to the mounting portion (10) and used to be fixed to the coaxial cable, the accommodating portion (20) comprising a tail shell (30) used to be fixed to the coaxial cable and a head shell (40) used to be threadedly connected to the mounting portion (10); An inner pressure ring (50) disposed in the tail housing (30) and capable of linear displacement relative to the axis of the tail housing (30); It is characterized by: The mounting portion (10) comprises a wire pressing ring (11) for fixing the inner conductor of the coaxial cable, and a pressure ring (14) extending in the axial direction of the wire pressing ring (11); The tail housing (30) is located near one end of the mounting portion (10) and extends inwardly in the radial direction to form a limiting ring (33) with a tapered peripheral wall. The middle section of the tail seat (31) of the tail housing (30) extends inwardly in the radial direction to form a rib, and a connecting ring (34) is formed along a direction perpendicular to the rib and extending toward both ends in the axial direction. The inner pressure ring (50) includes a clamping barrel (51) with a tapered peripheral wall and an anti-slip barrel (56); When the coaxial cable is installed with the accommodating portion (20) and the mounting portion (10), the connecting ring (34) pushes the clamp barrel (51) to move, and the limiting ring (33) pushes the clamp barrel (51) toward one end of the mounting portion (10), so that the clamp barrel (51) is offset toward the pressure ring (14) toward one end of the limiting ring (33), thereby completing the fixing of the cable by the clamp barrel (51) and the pressure ring (14), and the anti-slip barrel (56) is used to reinforce the connection between the coaxial cable and the accommodating portion (20).

2. The coaxial cable shielding terminal according to claim 1, characterized in that: The wire pressing ring (11) extends perpendicularly to the wire pressing ring (11) and is provided with a pressing ring (14), an outer snap ring (15) and a mounting ring (16) in sequence along a radial direction. The outer snap ring (15) has a tapered peripheral wall. The inner side of the mounting ring (16) is provided with a thread for connection with the head shell (40).

3. The coaxial cable shielding terminal according to claim 2, characterized in that: A first seat (41) of the first shell (40) extends along a side close to the mounting ring (16) to form a matching ring (42), and an outer side of the matching ring (42) is configured with an external thread corresponding to the inner thread of the mounting ring (16) for threaded connection with the mounting ring (16).

4. The coaxial cable shielding terminal according to claim 3, characterized in that: The first seat (41) extends inwardly in the radial direction to form an annular rib, and the rib extends in the axial direction at one end close to the outer retaining ring (15) to form an inner retaining ring (43), and the conical peripheral wall of the inner retaining ring (43) corresponds to the conical peripheral wall of the outer retaining ring (15), and the generatrix of the cross section is parallel.

5. The coaxial cable shielding terminal according to claim 4, characterized in that: The tail housing (30) is threadedly connected to the end of the head seat (41) away from the mounting portion (10) through the tail seat (31), and both ends of the connecting ring (34) of the tail housing (30) are provided with a first flange body (35), and the first flange body (35) is constructed on both sides of the connecting ring (34). The end of the tail housing (30) away from the head seat (41) extends inwardly in the radial direction to form an anti-slip ring (32) with a tapered peripheral wall, and the inner diameter of the anti-slip ring (32) gradually decreases along the axial direction toward one end of the connecting ring (34).

6. The coaxial cable shielding terminal according to claim 1, characterized in that: The clamp barrel (51) of the inner pressure ring (50) is provided with a groove for accommodating the connecting ring (34) at one end thereof close to the connecting ring (34). The groove divides the clamp barrel (51) at one end thereof close to the connecting ring (34) into an outer ring and an inner ring. The outer ring is an outer connecting ring (52), and the inner ring is an inner connecting ring (53). A second flange body (54) and a third flange body (55) are respectively constructed on the inner sides of the outer connecting ring (52) and the inner connecting ring (53). The connecting ring (34) is clamped in the outer connecting ring (52) and the inner connecting ring (53) via the second flange body (54) and the third flange body (55). The anti-slip barrel (56) of the inner pressure ring (50) is provided with a groove for accommodating the connecting ring (34) at one end thereof close to the connecting ring (34). The groove divides the anti-slip barrel (56) at one end thereof close to the connecting ring (34) into an outer ring and an inner ring. The outer ring is an outer connecting ring (52), and the inner ring is an inner connecting ring (53). The inner sides of the outer connecting ring (52) and the inner connecting ring (53) are respectively provided with a second flange body (54) and a third flange body (55). The connecting ring (34) is clamped in the outer connecting ring (52) and the inner connecting ring (53) through the second flange body (54) and the third flange body (55).

7. The coaxial cable shielding terminal according to claim 6, characterized in that: The inner side surface of the limiting ring (33) is in contact with the surface of the clamping barrel (51), and the clamping barrel (51) can slide along the inner side surface of the limiting ring (33).

8. The coaxial cable shielding terminal according to claim 5, characterized in that: The inner side surface of the anti-slip ring (32) is in contact with the surface of the anti-slip barrel (56), and the anti-slip barrel (56) can slide along the inner side surface of the anti-slip ring (32).

9. The coaxial cable shielding terminal according to claim 1, characterized in that: The mounting portion (10) further comprises a protective ring (12), a positioning ring (13) and a nut (17) arranged on the back side of the pressing ring (14); the protective ring (12) is configured as a hollow tube for allowing the cable core to pass through; the positioning ring (13) is used for positioning when connected to a connector; and the nut (17) is rotatably arranged on the outside of the pressing ring (11) for connection to the connector.

10. A coaxial cable connector, characterized in that: The coaxial cable shielding terminal comprises the coaxial cable shielding terminal according to any one of claims 1 to 9.

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