Shielding ring structure and shielding cable assembly

Abstract

The utility model relates to the technical field of shielding rings, in particular to a shielding ring structure, which comprises a shielding inner ring and a shielding outer ring, the shielding inner ring is electrically connected with a shielding layer of a shielding cable, the shielding outer ring is mounted on the outer side of the shielding inner ring in a penetrating manner, and a convex boss is arranged on the outer peripheral wall of the shielding inner ring. A clamping groove extending in the circumferential direction is formed in the inner circumferential wall of the shielding outer ring, a guide-in opening used for guiding the boss to enter the clamping groove is formed in one side, in the axial direction, of the clamping groove, and the boss and the guide-in opening can be switched from opposite arrangement to staggered arrangement by rotating the shielding outer ring, so that axial positioning of the shielding outer ring on the shielding inner ring is achieved; the utility model further relates to a shielding cable assembly which comprises a shielding cable and the shielding ring structure arranged on the shielding cable in a penetrating mode. According to the utility model, the shielding outer ring is not easy to displace during crimping, a positioning tool and a positioning auxiliary material are not needed, the operation is convenient, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding rings, and more specifically, to a shielding ring structure and a shielding cable assembly. Background Art

[0002] Shielded cables include inner conductors, inner insulation layers, shielding layers, and outer insulation layers. Based on the needs of the shielding function, the following method is usually used to achieve the shielded connection between the external shielding component and the shielded cable: first, partially peel off the outer insulation layer to expose the shielding layer, and then put the shielding inner ring on the outer insulation layer. Then, the shielding layer is scattered and folded over the outside of the shielding inner ring, and then the shielding outer ring is put over the outside of the shielding inner ring. Finally, the shielding outer ring and the shielding inner ring are crimped together by crimping and fixed on the shielded cable. The shielding inner ring and the shielding outer ring constitute a shielding ring structure, which is used to shield the shielding layer and the external shielding component.

[0003] When the shielding outer ring is sleeved on the outside of the shielding inner ring, it is prone to axial movement and rotation. During crimping, positioning tooling and other positioning auxiliary materials such as tape are required for auxiliary positioning. The crimping operation is inconvenient, time-consuming and labor-intensive. Utility Model Content

[0004] The utility model provides a shielding ring structure and a shielding cable assembly, so as to solve the problems of inconvenient crimping positioning, time-consuming and labor-intensive processes in the prior art.

[0005] The utility model provides a shielding ring structure, which is arranged on a shielded cable, and includes a shielding inner ring electrically connected to the shielding layer of the shielded cable, and a shielding outer ring installed on the outside of the shielding inner ring. One of the outer peripheral wall of the shielding inner ring and the inner peripheral wall of the shielding outer ring has a protruding boss, and the other is provided with a groove extending along the circumferential direction, and one side of the groove in the axial direction has an introduction port for guiding the boss into the groove to realize the installation between the shielding inner ring and the shielding outer ring. Rotating the shielding outer ring can switch the boss and the introduction port from a relative setting to a staggered setting to realize the positioning of the shielding outer ring.

[0006] Optionally, a protrusion close to the inlet is provided on at least one of the two axial side walls of the slot. When the boss enters the slot and rotates to shield the outer ring, the boss passes over the protrusion and engages with the protrusion in the circumferential direction to prevent the boss from unexpectedly detaching from the slot.

[0007] Optionally, at least one barb structure is circumferentially provided on the inner wall of the shielding inner ring, and at least one claw is circumferentially provided on the end of the shielding inner ring facing the shielding outer ring. The barb structure and the claw jointly position the shielding inner ring in the axial direction when installed on the outside of the shielding cable.

[0008] Optionally, the shielding inner ring is provided with an outwardly extending flange structure at one end away from the shielding outer ring, and the shielding outer ring is passed from the end of the shielding inner ring where the claw is provided to the outside of the shielding inner ring until it is axially positioned and matched with the flange structure.

[0009] Optionally, at least one flange structure is provided and is axially offset from the claw.

[0010] Optionally, the boss is arranged on the outer peripheral wall of the shielding inner ring, the slot is arranged on the inner peripheral wall of the shielding outer ring and passes through the shielding outer ring outward, and the inlet is arranged on a side of the slot close to the flange structure.

[0011] Optionally, the introduction port is connected to one end of the card slot in the circumferential direction.

[0012] Optionally, the shielding inner ring and the shielding outer ring are both integrally stamped.

[0013] The present invention also provides a shielded cable assembly, comprising a shielded cable and a shielding ring structure installed on the shielded cable, the shielded cable comprising an inner core, an inner insulating layer, a shielding layer and an outer insulating layer, the shielding ring structure being the shielding ring structure described above, the shielding inner ring of the shielding ring structure being installed on the outside of the outer insulating layer, and the shielding layer being folded and located between the shielding inner ring and the shielding outer ring.

[0014] Optionally, at least one claw is circumferentially provided at one end of the shielding inner ring facing the shielding outer ring, and the claw is axially positioned and cooperated with the end of the outer insulating layer corresponding to the folded portion of the shielding layer, and the shielding layer is folded through on both sides of the claw; at least one barb structure is circumferentially provided on the inner circumferential wall of the shielding inner ring, and the barb structure and the claw jointly axially position the shielding inner ring installed on the outside of the outer insulating layer.

[0015] The utility model has the following beneficial effects:

[0016] In the utility model, when the boss and the introduction port are set correspondingly, the shielding outer ring can be installed to the outside of the shielding inner ring. When the boss enters the slot from the introduction port, the boss and the introduction port are adjusted from the corresponding setting to the staggered setting by rotating the shielding outer ring, thereby realizing the axial clamping and positioning of the boss and the slot, and then positioning the shielding outer ring on the shielding inner ring. No positioning tooling and positioning auxiliary materials are required during crimping, which is convenient to operate and saves time and effort.

[0017] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0019] Figure 1 This is a schematic diagram of a shielded cable assembly provided with a shielding ring structure in this embodiment;

[0020] Figure 2 for Figure 1 Schematic diagram after removing the shielding outer ring;

[0021] Figure 3 Schematic diagram of the structure of the shielding inner ring of the shielding ring structure in this embodiment;

[0022] Figure 4 Schematic diagram of the structure of the shielding outer ring of the shielding ring structure in this embodiment.

[0023] The following are marked in the figure:

[0024] 1. Outer insulation layer; 11. Shielding layer; 12. Inner insulation layer; 13. Inner core;

[0025] 2. Shielded inner ring; 21. Boss; 22. Claw; 23. Flanged structure; 24. Barb structure;

[0026] 3. Shielding outer ring; 31. Slot; 32. Inlet; 33. Raised portion. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] like Figure 1-4As shown, an embodiment of the present invention provides a shielding ring structure, which is arranged on a shielded cable, including a shielding inner ring 2 electrically connected to the shielding layer 11 of the shielded cable, and a shielding outer ring 3 installed on the outside of the shielding inner ring 2, the outer peripheral wall of the shielding inner ring 2 is provided with a protruding boss 21, the inner peripheral wall of the shielding outer ring 3 is provided with a card groove 31 extending along the circumferential direction, and one side of the card groove 31 in the axial direction has an introduction port 32 for guiding the boss 21 into the card groove 31 to realize the installation between the shielding inner ring 2 and the shielding outer ring 3, the introduction port 32 in this embodiment is located on the front side of the card groove 31 in the installation direction of the shielding outer ring 3, rotating the shielding outer ring 3 can switch the boss 21 and the introduction port 32 from a relative setting to a staggered setting, so as to realize the axial positioning of the shielding outer ring 3 on the shielding inner ring 2, so that the shielding outer ring 3 is not easily displaced during crimping, and no positioning tooling and positioning auxiliary materials are required, which is easy to operate, saving time and effort.

[0032] In other embodiments, it is obvious that a slot can be provided on the outer peripheral wall of the shielding inner ring, a boss can be provided on the inner peripheral wall of the shielding outer ring, and the introduction port is located at the rear side of the slot in the direction of installation of the shielding outer ring.

[0033] Furthermore, in order to prevent the boss 21 from unexpectedly escaping from the slot 31, the slot 31 is provided with a protrusion 33 close to the inlet 32 ​​on at least one of the two axial side walls, as shown in Figures 1 and 4. In this embodiment, the slot 31 is provided with a protrusion 33 on the side wall on which the inlet 32 ​​is provided. When the boss 21 enters the slot 31 and rotates to shield the outer ring 3, the boss 21 passes over the protrusion 33 and then cooperates with the protrusion 33 in the circumferential direction to prevent the boss 21 from unexpectedly escaping from the slot 31.

[0034] Furthermore, in order to position the shielding inner ring 2 outside the shielded cable, at least one barb structure 24 is circumferentially provided on the inner circumferential wall of the shielding inner ring 2, and at least one claw 22 is circumferentially provided on one end of the shielding inner ring 2 facing the shielding outer ring 3. The barb structure 24 and the claw 22 jointly position the shielding inner ring 2 installed on the outside of the shielded cable in the axial direction. Figure 3 As shown, specifically in this embodiment, there are four barb structures 24 evenly distributed along the circumference, and there are four claws 22 evenly distributed along the circumference. At the same time, the four barbs and the four claws 22 are staggered in the axial direction to make the positioning more stable.

[0035] Furthermore, in order to further position the shield outer ring 3, and facilitate the boss 21 to enter the introduction port 32 and axially position and cooperate with the card slot 31, as shown in FIG. Figure 1 、 3As shown, in this embodiment, the shielding inner ring 2 is provided with a flange structure 23 extending outward at one end away from the shielding outer ring 3. The shielding outer ring 3 is passed from one end of the shielding inner ring 2 where the claw 22 is provided to the outside of the shielding inner ring 2 until it is axially positioned and matched with the flange structure 23. At this time, the boss 21 enters the slot 31 from the inlet 32.

[0036] Furthermore, the flange structure 23 is provided with at least one and is staggered with the claw 22 in the axial direction, in order to ensure the positioning effect of the shielding outer ring 3, such as Figure 3 As shown, in this embodiment, there are four flange structures 23 evenly distributed in the circumferential direction.

[0037] like Figure 1-4 As shown, in this embodiment, considering the convenience of processing, the boss 21 is arranged on the outer peripheral wall of the shielding inner ring 2, the groove 31 is arranged on the inner peripheral wall of the shielding outer ring 3 and passes through the shielding outer ring 3 outward, and the inlet 32 ​​is arranged on the side of the groove 31 close to the flange structure 23, that is, the inlet 32 ​​is located on the front side of the groove 31 in the direction of wearing the shielding outer ring 3.

[0038] Furthermore, in order to make the boss 21 move only in a preset direction relative to the slot 31 during positioning, the circumferential length of the slot 31 is minimized to reduce the impact on the structure of the shielding outer ring 3, such as Figure 1 、 4 As shown, in this embodiment, the introduction port 32 is communicated with one end of the card slot 31 in the circumferential direction.

[0039] In this embodiment, the shielding inner ring 2 and the shielding outer ring 3 are both stamped integrally. The staggered arrangement of the above-mentioned claws 22 and the flange structure 23 can also make the shapes of adjacent shielding inner rings 2 complementary when stamping multiple shielding inner rings 2, thereby minimizing the generation of waste.

[0040] In this embodiment, two bosses 21 are symmetrically provided on the shielding inner ring 2 relative to the axis, and two corresponding slots 31 are also provided on the shielding outer ring 3 to enhance the stability of positioning.

[0041] like Figure 1-4 As shown, an embodiment of the present invention also provides a shielded cable assembly, including a shielded cable and a shielding ring structure installed on the shielded cable, the shielded cable includes an inner core 13, an inner insulating layer 12, a shielding layer 11 and an outer insulating layer 1, the shielding ring structure is the shielding ring structure described in the above embodiment, the shielding inner ring 2 of the shielding ring structure is installed on the outside of the outer insulating layer 1, and the shielding layer 11 is folded and located between the shielding inner ring 2 and the shielding outer ring 3.

[0042] Furthermore, at least one claw 22 is circumferentially provided on the end of the shielding inner ring 2 facing the shielding outer ring 3. In this embodiment, four claws 22 are evenly distributed. The claws 22 are axially positioned and matched with the end of the outer insulating layer 1 corresponding to the folded portion of the shielding layer 11. The exposed shielding layer 11 is broken up and divided into four strands and folded through the two sides of the corresponding claws 22 respectively; at least one barb structure 24 is circumferentially provided on the inner circumferential wall of the shielding inner ring 2. In this embodiment, four claws 22 are evenly distributed. The barb structure 24 and the claws 22 jointly axially position the shielding inner ring 2 installed on the outside of the outer insulating layer 1.

[0043] During the specific assembly, the shielding inner ring 2 is first installed on the outer insulating layer 1 until the claw 22 is axially positioned with the end of the outer insulating layer 1 corresponding to the folded part of the shielding layer 11, and the barb structure 24 is positioned with the outer side of the outer insulating layer 1 to realize the positioning of the shielding inner ring 2; then the exposed shielding layer 11 is broken up and divided into four strands and folded from both sides of the corresponding claw 22 to the outside of the shielding inner ring 2; finally, the shielding outer ring 3 is installed on the outside of the shielding inner ring 2, and the boss 21 enters the card groove 31 from the inlet 32, and the folding structure is positioned with the shielding outer ring 3. At this time, the shielding outer ring 3 is rotated so that the boss 21 passes over the raised part 33 to complete the assembly and positioning of the shielding outer ring 3. The folded shielding layer 11 is clamped between the shielding inner ring 2 and the shielding outer ring 3. The shielding outer ring 3 is not easy to be displaced during crimping, and no positioning tooling and positioning auxiliary materials are required. The operation is convenient, saving time and effort.

[0044] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A shielding ring structure, provided on a shielded cable, comprising a shielding inner ring electrically connected to the shielding layer of the shielded cable, and a shielding outer ring mounted on the outer side of the shielding inner ring, characterized in that: One of the outer circumferential wall of the shielding inner ring and the inner circumferential wall of the shielding outer ring has a protruding boss, and the other is provided with a groove extending along the circumferential direction, and one side of the groove in the axial direction has an introduction port for guiding the boss into the groove to realize the installation between the shielding inner ring and the shielding outer ring. Rotating the shielding outer ring can switch the boss and the introduction port from a relative setting to a staggered setting to realize the positioning of the shielding outer ring.

2. A shielding ring structure according to claim 1, characterized in that: The slot is provided with a protrusion close to the inlet on at least one of the two axial side walls. When the boss enters the slot and rotates to shield the outer ring, the boss passes over the protrusion and cooperates with the protrusion in the circumferential direction to prevent the boss from unexpectedly detaching from the slot.

3. The shielding ring structure according to claim 1, wherein: At least one barb structure is circumferentially provided on the inner circumferential wall of the shielding inner ring, and at least one claw is circumferentially provided on the end of the shielding inner ring facing the shielding outer ring. The barb structure and the claw jointly position the shielding inner ring installed on the outside of the shielding cable in the axial direction.

4. A shielding ring structure according to claim 3, characterized in that: The shielding inner ring is provided with an outwardly extending flange structure at one end away from the shielding outer ring, and the shielding outer ring is passed from the end where the claws are provided on the shielding inner ring to the outside of the shielding inner ring until it is axially positioned and matched with the flange structure.

5. A shielding ring structure according to claim 4, characterized in that: The flange structure is provided with at least one and is staggered with the claw in the axial direction.

6. A shielding ring structure according to claim 5, characterized in that: The boss is arranged on the outer peripheral wall of the shielding inner ring, the slot is arranged on the inner peripheral wall of the shielding outer ring and passes through the shielding outer ring outward, and the introduction port is arranged on a side of the slot close to the flange structure.

7. A shielding ring structure according to claim 6, characterized in that: The introduction port is communicated with one end of the card slot in the circumferential direction.

8. The shielding ring structure according to claim 1, wherein: The shielding inner ring and the shielding outer ring are both integrally stamped.

9. A shielded cable assembly, comprising a shielded cable and a shielding ring structure installed on the shielded cable, wherein the shielded cable comprises an inner core, an inner insulating layer, a shielding layer and an outer insulating layer, characterized in that: The shielding ring structure is the shielding ring structure according to any one of claims 1 to 8, wherein the inner shielding ring of the shielding ring structure is installed outside the outer insulating layer, and the shielding layer is folded and located between the inner shielding ring and the outer shielding ring.

10. The shielded cable assembly according to claim 9, wherein: At least one claw is circumferentially provided at one end of the shielding inner ring facing the shielding outer ring, and the claw is axially positioned and matched with the end of the outer insulating layer corresponding to the folded portion of the shielding layer, and the shielding layer is folded and passed through from both sides of the claw; at least one barb structure is circumferentially provided on the inner circumferential wall of the shielding inner ring, and the barb structure and the claw jointly axially position the shielding inner ring installed on the outside of the outer insulating layer.

Images