Anti-interference control cable

Abstract

The utility model belongs to the technical field of control cables, and particularly relates to an anti-interference control cable, which comprises a plurality of anti-interference cable cores, an inner support is arranged on the inner sides of the anti-interference cable cores, the inner support is positioned in the center of the cable, a plurality of outer supports are arranged outside the anti-interference cable cores, and the outer supports are distributed circumferentially. An inner coating layer is formed outside the outer support, a flame-retardant layer is formed outside the inner coating layer, an outer coating layer is formed outside the flame-retardant layer, and a mark groove is formed outside the outer coating layer; firstly, the inner support and the outer support outside the anti-interference cable core can effectively support the stability inside the cable, the inner support and the outer support are mutually isolated, and the anti-interference performance is improved; and the flame-retardant layer at the end part can be conveniently taken out in the radial direction, and an annular groove a for stably mounting the joint is formed between the inner coating layer and the outer coating layer, so that the connection between the inner bracket and the joint is facilitated, and the stability can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of control cables, in particular to an anti-interference control cable. Background Art

[0002] Anti-interference control cable is a cable used for electrical system installation, especially in industrial use environments and places with high requirements for anti-electromagnetic interference. Its design and manufacturing process considers how to effectively reduce or eliminate the impact of external electromagnetic interference on signal transmission; by using a shielding layer, such as a braided shield or an aluminum foil shield, the impact of electromagnetic interference on the internal signal of the cable can be effectively reduced;

[0003] Some control cables have no internal support and the external annular surface is not smooth. When wiring, the outer layer cannot be cut in an annular manner. The cutter needs to pass through the cross section of the cable to peel off the outer layer at the wiring position. The operation is not convenient enough. In addition, for the sake of stability, some models of connectors have a connecting sleeve that can be partially inserted into the cable at the connection end with the control cable, and then the connecting sleeve is squeezed through the external thread to fix the connector on the control cable. However, the existing cable cannot conveniently empty the annular groove for connecting the connector from the cross section. Direct insertion of the connecting sleeve is likely to squeeze the internal structure of the cable inward, resulting in an unstable connection.

[0004] In order to solve the above problems, this application proposes an anti-interference control cable. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-interference control cable, 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 an anti-interference control cable, comprising a plurality of anti-interference cable cores, wherein an inner support is arranged inside the plurality of anti-interference cable cores, the inner support is located at the center of the cable, an outer support is arranged outside the anti-interference cable core, the outer support is a plurality of circumferentially distributed, an inner sheath is formed outside the outer support, a flame retardant layer is formed outside the inner sheath, an outer sheath is formed outside the flame retardant layer, a marking groove is provided outside the outer sheath, the flame retardant layer is composed of a plurality of single sheets, the single sheets are distributed circumferentially and distributed in sequence along the axial direction of the cable to form the flame retardant layer, the marking groove is located in the middle position of the single sheet flame retardant layer, an axially limitable connecting portion is provided between the inner sheath and the flame retardant layer, the connecting portion is located between one side of the flame retardant layer and the inner sheath, and an annular groove a is formed after the circumferentially distributed single sheet flame retardant layer is separated from the cable.

[0008] Furthermore, the outer portion of the inner bracket is formed with inner annular grooves having the same number as the anti-interference cable cores, and the inner center of the inner bracket is formed with an energy absorption hole, and the inner annular grooves are in contact with the anti-interference cable cores.

[0009] Furthermore, the contact surfaces of the circumferentially distributed outer supports are tightly fitted, and the exteriors of the circumferentially distributed multiple outer supports form a complete circle.

[0010] Furthermore, an outer annular groove is formed on the inner side of the outer bracket, and the outer annular groove fits tightly with the anti-interference cable core.

[0011] Furthermore, the inner coating layer is provided with spiral grooves on the outside, the number of the spiral grooves is the same as the number of the single flame retardant layer distributed on the circumference, and a spiral strip is formed at one end of the inner side of the flame retardant layer.

[0012] Furthermore, the spiral strip is engaged and connected with the spiral groove from a radial direction.

[0013] Furthermore, the inner bracket and the outer bracket form a partition between adjacent anti-interference cable cores.

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

[0015] The utility model can stably and evenly support multiple anti-interference cable cores inside the cable by arranging inner and outer brackets, and also increases the anti-interference effect;

[0016] The utility model provides a split and continuous flame retardant layer, the flame retardant layer can be detached from the cable in the radial direction, and a spiral strip matched with the spiral groove is arranged on one side of the flame retardant layer, and then the spiral strip can be conveniently removed through the cooperation with the marking groove, and an annular groove a can be formed between the inner coating layer and the outer coating layer, which is convenient for the stable connection of the joint, and the flame retardant layer will not be detached from the axial direction of the cable when the outer coating layer is not peeled off.

[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 1A schematic diagram of the structure from a side view;

[0021] Figure 3 It is a schematic diagram of the structure in which the flame retardant layer in the utility model is partially peeled off;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure in half section from the main view;

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

[0024] In the figure: 1. inner bracket; 11. inner annular groove; 12. energy absorption hole; 2. anti-interference cable core; 3. outer bracket; 31. outer annular groove; 4. inner coating layer; 41. spiral groove; 5. flame retardant layer; 51. spiral strip; 6. outer coating layer; 61. marking groove. 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 1-4 As shown, the utility model is an anti-interference control cable, comprising a plurality of anti-interference cable cores 2, an inner support 1 is arranged inside the plurality of anti-interference cable cores 2, the inner support 1 is located at the center of the cable, an outer support 3 is arranged outside the anti-interference cable core 2, the outer support 3 is a plurality of circumferentially distributed, an inner sheath 4 is formed outside the outer support 3, a flame retardant layer 5 is formed outside the inner sheath 4, an outer sheath 6 is formed outside the flame retardant layer 5, a marking groove 61 is provided outside the outer sheath 6, the flame retardant layer 5 is composed of a plurality of single pieces, the single pieces are distributed circumferentially and distributed in sequence along the axial direction of the cable to form the flame retardant layer 5, the marking groove 61 is located in the middle position of the single flame retardant layer 5, an axially limitable connecting portion is provided between the inner sheath 4 and the flame retardant layer 5, the connecting portion is located between one side of the flame retardant layer 5 and the inner sheath 4, and an annular groove a is formed after the circumferentially distributed single flame retardant layer 5 is detached from the cable.

[0028] Among them, the outer part of the inner bracket 1 is formed with inner annular grooves 11 with the same number as the anti-interference cable core 2, and an energy absorption hole 12 is formed in the center of the inner bracket 1. The inner annular groove 11 is in contact with the anti-interference cable core 2, and the contact surface of the circumferentially distributed outer bracket 3 is tightly fitted, and the outer parts of the circumferentially distributed multiple outer brackets 3 form a complete circle. In this embodiment, the inner annular groove 11 ensures the fit between the anti-interference cable core 2 and the inner bracket 1, and the energy absorption hole 12 can improve the bending resistance and toughness of the cable.

[0029] Among them, an outer annular groove 31 is formed on the inner side of the outer bracket 3, and the outer annular groove 31 fits tightly with the anti-interference cable core 2. After the circumferentially distributed outer annular grooves 31 are combined and formed in this embodiment, the anti-interference cable core 2 is wrapped and the outer surface is formed to facilitate the formation of an annular surface of the inner coating layer 4.

[0030] Among them, spiral grooves 41 are opened on the outside of the inner covering layer 4, and the number of spiral grooves 41 is the same as the number of circumferential distribution of the single flame retardant layer 5. A spiral strip 51 is formed at one end of the inner side of the flame retardant layer 5. In this embodiment, the number of spiral grooves 41 is the same as the number of unit flame retardant layers 5. The purpose is to make the flame retardant layer 5 circumferentially distributed on a plane, so as to facilitate the separation of a circumferentially distributed single flame retardant layer 5 after circumferential cutting, and the spiral grooves 41 can be formed more conveniently.

[0031] Among them, the spiral strip 51 is radially engaged with the spiral groove 41. In this embodiment, after the spiral groove 41 and the spiral strip 51 are engaged, the flame retardant layer 5 cannot be axially separated from the cable, which ensures the reliability of the flame retardant layer 5 after the cable is cut. At the same time, the flame retardant layer 5 can be quickly separated after the outer coating layer 6 is peeled off.

[0032] Among them, a partition is formed between the inner bracket 1 and the outer bracket 3 between adjacent anti-interference cable cores 2. In this embodiment, the partition can play an anti-interference role between the anti-interference cable cores 2. The inner bracket 1 and the outer bracket 3 can be formed of materials containing anti-interference.

[0033] It can be understood that, firstly, the inner bracket 1 and the outer bracket 3 outside the anti-interference cable core 2 can effectively support the stability inside the cable, isolate each other, and increase the anti-interference performance. Secondly, a split flame retardant layer 5 is provided. After the outer coating layer 6 outside the flame retardant layer 5 is peeled off along the marking groove 61, the flame retardant layer 5 at the end can be easily removed radially and form an annular groove a for stably installing the joint between the inner coating layer 4 and the outer coating layer 6, which is convenient for connecting the inner bracket 1 with the joint and can also ensure stability.

[0034] A specific application of this embodiment is: the inner bracket 1 is formed by extrusion, and the anti-interference cable core 2 is fitted in the inner annular groove 11, and then the outer bracket 3 is wrapped on the outside of the inner bracket 1, and the outer annular groove 31 at this time is fitted with the anti-interference cable core 2, and the inner coating layer 4 is formed on the outside of the combined outer bracket 3, and a spiral groove 41 is opened on the outside of the inner coating layer 4, and the inner coating layer 4 is connected to the outside of the flame retardant layer 5, and the spiral strips 51 in the flame retardant layer 5 cooperate with the spiral grooves 41. The flame retardant layer 5 is composed of a plurality of single pieces with equal distances around the circumference, and the plurality of single pieces are continuously distributed along the axial direction of the cable to form the flame retardant layer 5, and an outer coating layer 6 is formed on the outside of the flame retardant layer 5, and then a marking groove 61 is opened on the outside of the outer coating layer 6, and the marking groove 61 is located in the middle of the single flame retardant layer 5;

[0035] When wiring: the outer coating layer 6 is cut along the marking groove 61, and the outer coating layer 6 under the cutting is peeled off. At this time, half of the circumferentially distributed single flame retardant layer 5 is exposed, and the flame retardant layer 5 is radially swung. At this time, the spiral strip 51 is detached from the spiral groove 41, and then the flame retardant layer 5 is detached along the axial direction. At this time, an annular groove a is formed between the inner coating layer 4 and the outer coating layer 6, and the outer bracket 3 outside the connecting part of the anti-interference cable core 2 and the inner bracket 1 inside are cut, and then the joint is connected to the inner bracket 1.

[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. An anti-interference control cable, comprising a plurality of anti-interference cable cores (2), characterized in that: An inner support (1) is arranged on the inner side of a plurality of the anti-interference cable cores (2), the inner support (1) being located at the center of the cable, an outer support (3) is arranged on the outer side of the anti-interference cable core (2), the outer support (3) being a plurality of circumferentially distributed, an inner coating layer (4) is formed on the outer side of the outer support (3), a flame retardant layer (5) is formed on the outer side of the inner coating layer (4), an outer coating layer (6) is formed on the outer side of the flame retardant layer (5), a marking groove (61) is provided on the outer side of the outer coating layer (6), the flame retardant layer (5) is composed of a plurality of single sheets, the single sheets are distributed circumferentially and distributed in sequence along the axial direction of the cable to form the flame retardant layer (5), the marking groove (61) is located in the middle position of the single sheet flame retardant layer (5), an axially limitable connecting portion is provided between the inner coating layer (4) and the flame retardant layer (5), the connecting portion is located between one side of the flame retardant layer (5) and the inner coating layer (4), and an annular groove a is formed on the circumferentially distributed single sheet flame retardant layer (5) after it is separated from the cable.

2. The anti-interference control cable according to claim 1, characterized in that: The inner support (1) is externally formed with inner annular grooves (11) having the same number as the anti-interference cable core (2), and an energy absorption hole (12) is formed at the center of the inner support (1), and the inner annular grooves (11) are in contact with the anti-interference cable core (2).

3. The anti-interference control cable according to claim 1, characterized in that: The contact surfaces of the circumferentially distributed outer supports (3) fit tightly together, and the exteriors of the circumferentially distributed multiple outer supports (3) form a complete circle.

4. The anti-interference control cable according to claim 3, characterized in that: An outer annular groove (31) is formed on the inner side of the outer bracket (3), and the outer annular groove (31) is tightly fitted with the anti-interference cable core (2).

5. The anti-interference control cable according to claim 4, characterized in that: The inner coating layer (4) is provided with a spiral groove (41) on the outside, the number of the spiral grooves (41) being the same as the number of the spiral grooves (41) distributed circumferentially on the single flame retardant layer (5), and a spiral strip (51) is formed on one end of the inner side of the flame retardant layer (5).

6. The anti-interference control cable according to claim 5, characterized in that: The spiral strip (51) is engaged and connected with the spiral groove (41) from a radial direction.

7. The anti-interference control cable according to claim 1, characterized in that: The inner support (1) and the outer support (3) also form a partition between adjacent anti-interference cable cores (2).

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