High-temperature-resistant special shielded conductor

Abstract

The utility model belongs to the technical field of shielded conductors, and particularly relates to a high-temperature-resistant special shielded conductor, which comprises an inner support and a cable core circumferentially distributed outside the inner support, a buffer space is formed inside the inner support, a split shielding sleeve is arranged outside the cable core, the shielding sleeve is wrapped outside the cable core, and the buffer space is formed inside the inner support. An outer support distributed circumferentially is arranged outside the inner support, a closed loop is formed outside the outer support, the inner support, the cable core and the shielding sleeve are integrally connected, a wrapping layer is formed outside the outer support, and a shielding coating is formed outside the wrapping layer through coating; it can be understood that the shielding sleeve and the shielding coating which are split are arranged firstly, the effects of being simple in processing technology, low in cost and easy to form the wire shielding layer are achieved, meanwhile, the anti-interference effect can be improved through double shielding, and secondly, the energy absorption holes, the energy absorption grooves and the buffering strips form buffering inside and outside the wire, the anti-compression effect of the wire is improved, and the service life of the wire is prolonged. And the protection performance of the wire is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shielded wires, in particular to a special high-temperature resistant shielded wire. Background Art

[0002] High temperature resistant special shielded wire is a special wire and cable with high temperature resistance and shielding function. This kind of wire is usually used in scenarios where signals or electric energy need to be transmitted in high temperature environments, such as electricity, petroleum, chemical industry, metallurgy, aerospace and other fields; the high temperature resistance enables the wire to work normally in high temperature environments and withstand high temperatures without damage or performance degradation, and the shielding function can effectively reduce electromagnetic interference and signal loss;

[0003] The wire shielding layer includes aluminum foil, copper mesh braided layer, copper foil, conductive coating, and shielding sleeve. The conductive coating only needs to be coated on the surface of the wire during processing, and the process is relatively simple. However, due to the thin material, the shielding effect is cross-cutting, and the processing methods of other shielding layers are relatively complicated, with high difficulty and cost. Secondly, the interior of the general high-temperature resistant special shielded wire is a solid structure, and there is no buffer space inside. The pressure resistance is relatively poor and cannot meet the needs of the actual working environment. It is easy to cause problems such as cable flattening and breaking, which will cause the transmission signal to change and interrupt the transmission signal. In severe cases, it will cause short circuits and other accidents, resulting in casualties and property losses.

[0004] In order to solve the above problems, the present application proposes a high temperature resistant special shielded wire. Utility Model Content

[0005] The purpose of the utility model is to provide a high temperature resistant special shielded wire, which solves the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a high-temperature resistant special shielded conductor, comprising an inner support and a cable core circumferentially distributed outside the inner support, a buffer space is formed inside the inner support, a split shielding sleeve is provided outside the cable core, the shielding sleeve is wrapped around the outside of the cable core, a circumferentially distributed outer support is provided outside the inner support, a closed loop is formed outside the outer support and the inner support, the cable core and the shielding sleeve are integrally connected, a covering layer is formed outside the outer support, a shielding coating is formed outside the covering layer by coating, an inner protective layer is formed outside the shielding coating, an outer protective layer is arranged outside the inner protective layer, a buffer strip is formed between the inner protective layer and the outer protective layer, and the buffer strip has a "V"-shaped cross section and is symmetrically distributed circumferentially.

[0008] Furthermore, the inner bracket includes U-shaped grooves circumferentially distributed on the outside and energy absorption holes formed between two adjacent U-shaped grooves, and one side of the energy absorption hole is provided with an energy absorption groove communicating with the outside.

[0009] Furthermore, the diameter of the U-shaped groove matches the outer diameter of the shielding sleeve, and the inner diameter of the shielding sleeve matches the outer diameter of the cable core.

[0010] Furthermore, the outer bracket includes an inner support bar and an outer wrapping bar, and the support bar is embedded in the opening of the U-shaped groove and cooperates with the U-shaped groove to wrap the shielding sleeve.

[0011] Furthermore, the wrapping strip is attached to the outside of the inner bracket, and a plurality of outer brackets arranged circumferentially form a closed-loop circular wrapping layer on the outside of the inner bracket.

[0012] Furthermore, a clamping groove is formed on the inner side of the opening of the U-shaped groove, and clamping strips engaged with the clamping groove are formed on both sides of the support strip.

[0013] Furthermore, the plurality of outer supports on the circumference tightly combine the inner support, the cable core and the shielding sleeve through the clamping grooves and the clamping strips.

[0014] The utility model has the following beneficial effects:

[0015] The utility model sets the shielding sleeve into a split structure, and the arc-shaped shielding sleeve can be formed by a separate extrusion process, which is convenient for the forming work. At the same time, the shielding sleeve is connected to the wire by a chimeric method, which can effectively improve the forming efficiency of the shielding layer. At the same time, the shielding coating and the shielding sleeve are set to achieve double shielding. The processing technology and cost of the shielding coating are also low, so that the shielding effect can be improved while controlling the cost;

[0016] The utility model can form a buffer space inside the conductor by arranging energy absorption holes and energy absorption grooves. Secondly, the energy absorption groove can also form a complete closed loop outside the inner bracket, which is convenient for the forming of the energy absorption hole. The buffer strip and the gap between the inner protective layer and the outer protective layer can form a buffer space outside the conductor. This can provide reliable buffering and deformable space after the cable is compressed, avoid direct damage to the conductor by pressure, and better protect the conductor.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure viewed from the side;

[0021] Figure 3 It is a structural schematic diagram of the wire cross section of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the exploded connection between the inner bracket and the outer bracket in the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. inner bracket; 11. U-shaped groove; 12. energy absorption hole; 13. energy absorption groove; 14. clamping groove; 2. cable core; 3. shielding sleeve; 4. outer bracket; 41. support bar; 42. wrapping bar; 43. clamping bar; 5. coating layer; 6. shielding coating; 7. inner protective layer; 8. buffer bar; 9. outer protective layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] See also Figure 1-4As shown, the utility model is a high-temperature resistant special shielded conductor, comprising an inner bracket 1 and a cable core 2 circumferentially distributed outside the inner bracket 1, a buffer space is formed inside the inner bracket 1, a split shielding sleeve 3 is provided outside the cable core 2, the shielding sleeve 3 is wrapped around the outside of the cable core 2, a circumferentially distributed outer bracket 4 is provided outside the inner bracket 1, a closed loop is formed outside the outer bracket 4 and the inner bracket 1, the cable core 2 and the shielding sleeve 3 are connected as a whole, a covering layer 5 is formed outside the outer bracket 4, a shielding coating 6 is formed by coating on the outside of the covering layer 5, an inner protective layer 7 is formed outside the shielding coating 6, an outer protective layer 9 is provided outside the inner protective layer 7, a buffer strip 8 is formed between the inner protective layer 7 and the outer protective layer 9, the buffer strip 8 has a "V"-shaped cross-section and is symmetrically distributed circumferentially, in this embodiment, the inner protective layer 7, the buffer strip 8 and the outer protective layer 9 cooperate to form a buffer layer outside the conductor, so that it can play a buffering and protective role when the conductor is under pressure, and the inner protective layer 7, the buffer strip 8 and the outer protective layer 9 are all formed of high-temperature resistant materials.

[0028] Among them, the inner bracket 1 includes U-shaped grooves 11 distributed circumferentially on the outside and energy absorption holes 12 formed between two adjacent U-shaped grooves 11. An energy absorption groove 13 communicating with the outside is opened on one side of the energy absorption hole 12. In this embodiment, the energy absorption holes 12 and the energy absorption grooves 13 are provided to form a buffer space inside the wire. Secondly, the energy absorption grooves 13 can also form a complete closed loop outside the inner bracket 1, which is convenient for the formation of the energy absorption hole 12.

[0029] Among them, the diameter of the U-shaped groove 11 is consistent with the outer diameter of the shielding sleeve 3, and the inner diameter of the shielding sleeve 3 is consistent with the outer diameter of the cable core 2. In this embodiment, the cooperation of the U-shaped groove 11 with the cable core 2 and the shielding sleeve 3 has the advantages of low cost, easy assembly and compact structure.

[0030] Among them, the outer bracket 4 includes an inner support bar 41 and an outer wrapping bar 42. The support bar 41 is embedded in the opening of the U-shaped groove 11 and cooperates with the U-shaped groove 11 to wrap the shielding sleeve 3. In this embodiment, the wrapping bar 42 cooperates with the opening of the U-shaped groove 11 to fill the gap formed by the cable core 2 and the shielding sleeve 3 connected in the U-shaped groove 11, thereby also supporting the cable core 2 and the shielding sleeve 3 to ensure the fit of the inner bracket 1, the cable core 2, and the shielding sleeve 3.

[0031] Among them, the wrapping strip 42 is attached to the outside of the inner bracket 1, and the multiple outer brackets 4 arranged circumferentially form a closed-loop circular wrapping layer on the outside of the inner bracket 1. In this embodiment, the wrapping strip 42 forms a complete closed loop to facilitate the molding of the coating layer 5, and can form a reliable support between the coating layer 5 and the inner bracket 1, thereby ensuring the molding effect of the coating layer 5.

[0032] Among them, a card slot 14 is formed on the inner side of the opening of the U-shaped groove 11, and card strips 43 engaged with the card slot 14 are formed on both sides of the support bar 41. The multiple outer brackets 4 on the circumference are tightly combined with the inner bracket 1, the cable core 2, and the shielding sleeve 3 through the card slot 14 and the card strip 43. In this embodiment, the inner bracket 1, the cable core 2, the shielding sleeve 3, and the outer bracket 4 can be tightly combined through the engagement of the card slot 14 and the card strip 43, thereby facilitating the molding of the coating layer 5, and then facilitating the molding work of the wire.

[0033] It can be understood that firstly, the separate shielding sleeve 3 and shielding coating 6 are set, which has the advantages of simple processing technology, low cost, and easy forming of the wire shielding layer. At the same time, double shielding can also improve the anti-interference effect. Secondly, the energy absorption holes 12, energy absorption grooves 13 and buffer strips 8 form buffers inside and outside the wire, thereby improving the pressure resistance of the wire and further improving the protection performance of the wire.

[0034] A specific application of this embodiment is that the inner bracket 1 and the U-shaped groove 11, the energy absorption hole 12, the energy absorption groove 13, and the clamping groove 14 are integrally formed by extrusion, and the outer bracket 4 and the support bar 41, the wrapping bar 42, and the clamping bar 43 are also integrally formed by extrusion;

[0035] Wire forming: embed half of the shielding sleeve 3 into the U-shaped groove 11, embed the cable core 2 into half of the shielding sleeve 3, and then wrap the other half of the shielding sleeve 3 on the outside of the cable core 2. At this time, the cable core 2 is wrapped by the split shielding sleeve 3, and multiple circumferentially distributed outer brackets 4 are assembled at the same time. The support strip 41 enters the U-shaped groove 11 and fits the cable core 2 and the shielding sleeve 3 tightly. The wrapping strip 42 wraps the outside of the inner bracket 1 and forms a complete circle. The clamping strip 43 is engaged with the clamping groove 14 to connect the inner bracket 1, the cable core 2, the shielding sleeve 3, and the outer bracket 4 to facilitate the forming of the coating layer 5. The coating layer 5 is formed on the outside of the wrapping strip 42, the shielding coating 6 is applied to the outside of the coating layer 5 and dried, and the inner protective layer 7, the buffer strip 8, and the outer protective layer 9 are formed on the shielding coating 6.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high temperature resistant special shielded conductor, comprising an inner support (1) and a cable core (2) circumferentially distributed outside the inner support (1), characterized in that: A buffer space is formed inside the inner bracket (1), a split shielding sleeve (3) is provided outside the cable core (2), the shielding sleeve (3) is wrapped around the outside of the cable core (2), a circumferentially distributed outer bracket (4) is provided outside the inner bracket (1), the outer bracket (4) forms a closed loop outside and integrally connects the inner bracket (1), the cable core (2) and the shielding sleeve (3), a coating layer (5) is formed outside the outer bracket (4), a shielding coating (6) is formed outside the coating layer (5), an inner protective layer (7) is formed outside the shielding coating (6), an outer protective layer (9) is provided outside the inner protective layer (7), a buffer strip (8) is formed between the inner protective layer (7) and the outer protective layer (9), the buffer strip (8) has a "V"-shaped cross section and is symmetrically distributed around the circumference.

2. The high temperature resistant special shielded wire according to claim 1, characterized in that: The inner support (1) comprises U-shaped grooves (11) circumferentially distributed on the outside and energy absorption holes (12) formed between two adjacent U-shaped grooves (11), and an energy absorption groove (13) communicating with the outside is formed on one side of the energy absorption hole (12).

3. The high temperature resistant special shielded wire according to claim 2, characterized in that: The diameter of the U-shaped groove (11) matches the outer diameter of the shielding sleeve (3), and the inner diameter of the shielding sleeve (3) matches the outer diameter of the cable core (2).

4. The high temperature resistant special shielded wire according to claim 2, characterized in that: The outer bracket (4) comprises an inner support bar (41) and an outer wrapping bar (42); the support bar (41) is embedded in the opening of the U-shaped groove (11) and cooperates with the U-shaped groove (11) to wrap the shielding sleeve (3).

5. The high temperature resistant special shielded wire according to claim 4, characterized in that: The wrapping strip (42) is attached to the outside of the inner support (1), and a plurality of outer supports (4) arranged circumferentially form a closed-loop circular wrapping layer on the outside of the inner support (1).

6. The high temperature resistant special shielded wire according to claim 4, characterized in that: A clamping groove (14) is formed on the inner side of the opening of the U-shaped groove (11), and clamping strips (43) that engage with the clamping groove (14) are formed on both sides of the support strip (41).

7. The high temperature resistant special shielded wire according to claim 6, characterized in that: The plurality of outer supports (4) on the circumference tightly combine the inner support (1), the cable core (2) and the shielding sleeve (3) through the clamping groove (14) and the clamping strip (43).

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