Multi-core flexible bending-resistant wire for sensor

Abstract

The utility model discloses a multi-core flexible bending-resistant wire for a sensor, which comprises an outer sheath, a first electric signal group, a second electric signal group, a low-frequency control signal group and a coaxial core wire, and is characterized in that the outer sheath wraps the outer sides of the first electric signal group, the second electric signal group, the low-frequency control signal group and the coaxial core wire; comprising two layers of inclined packages and an inner coating, the two layers of inclined packages wrap the outer side of the coaxial core wire, and the inner coating wraps the outer sides of the inclined packages; according to the utility model, small-pitch back-twist cabling is adopted during production of the twisted-pair units and the cabling, stress in cabling is eliminated, filling is added at a proper position, and roundness of a semi-finished product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wire materials, in particular to a multi-core flexible bending-resistant sensor wire. Background Art

[0002] Sensor cables need to accurately and interference-free transmit various sensor data to the ESP computer, and then transmit the instructions to the execution device. Signal cables are a signal transmission tool. Generally, the signals transmitted by signal cables are very small. In order to prevent signal interference, the signal cable has a shielding layer on the outside, which wraps the conductor. The shielding layer can guide external interference signals into the ground, preventing the interference signal from entering the inner conductor and interfering while reducing the loss of the transmission signal. However, the chemical corrosion resistance, bending performance, mechanical strength and shielding effect of existing sensor cables are not satisfactory. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides the following technical solutions: a multi-core flexible bend-resistant sensor wire, comprising an outer sheath, a first electrical signal group, a second electrical signal group, a low-frequency control signal group and a coaxial core wire, the outer sheath being wrapped around the outside of the first electrical signal group, the second electrical signal group, the low-frequency control signal group and the coaxial core wire; comprising two layers of oblique sheath and an inner sheath, the two layers of the oblique sheath being wrapped around the outside of the coaxial core wire, and the inner sheath being wrapped around the outside of the oblique sheath.

[0004] Preferably, two fillers are included, wherein the fillers are located in the gaps on both sides of the coaxial core wire and the fillers axially penetrate the outer sheath.

[0005] Preferably, the first electrical signal group includes three first core wires, and the three first core wires are twisted and connected.

[0006] Preferably, the second electrical signal group includes three second core wires, and the three second core wires are twisted and connected.

[0007] Preferably, the low-frequency control signal group includes two third core wires, and the two third core wires are twisted together.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] 1. A single coaxial cable must be adequately shielded to ensure signal transmission. The shielding must not become loose during movement and must remain connected during frequent bending and twisting movements.

[0010] 2. The wiring space is small and needs to be folded repeatedly. The wire needs to be soft and small in diameter for easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1Schematic diagram of the internal structure of an embodiment of the present utility model.

[0012] Figure 2 This is a schematic structural diagram of the first electrical signal group according to an embodiment of the present utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the low-frequency control signal group according to an embodiment of the present utility model.

[0014] In the figure, 1. outer cover, 2. non-woven fabric, 3. first electrical signal group, 4. second electrical signal group, 5. low-frequency control signal group, 6. inner cover, 7. filling, 8. oblique cover, 9. first core wire, 10. second core wire, 11. third core wire, 12. coaxial core wire. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] like Figure 1-3A multi-core flexible bend-resistant sensor cable comprises an outer sheath 1, a first electrical signal group 3, a second electrical signal group 4, a low-frequency control signal group 5 and a coaxial core wire 12, wherein the outer sheath 1 is wrapped around the outside of the first electrical signal group 3, the second electrical signal group 4, the low-frequency control signal group 5 and the coaxial core wire 12; the outer sheath 1 comprises two layers of oblique sheaths 8 and an inner sheath 6, wherein the two layers of oblique sheaths 8 are wrapped around the outside of the coaxial core wire 12, and the inner sheath 6 is wrapped around the outside of the oblique sheaths 8; the core wire adopts a 6-type twisted fine copper wire conductor, and a bulletproof wire is added in the middle of the conductor, which makes the conductor soft and improves the tensile strength to ensure that it will not break when subjected to force during movement; The outer layer is insulated with TPEE, which has extremely high mechanical and electrical properties. It can meet the insulation effect with a very thin insulation thickness, reducing the diameter of the finished wire while providing support and protection for the moving conductor. The signal unit uses a double-layer oblique shield. Compared with other shielding specifications such as braiding and ground wire, the oblique shield is softer and has a smaller wire diameter, ensuring the overall softness of the wire. This utility model is a multi-core integrated sensor cable, including one coaxial cable for transmitting data core wires, one set of twisted pairs for transmitting low-frequency control signals, and another six wires divided into two groups and twisted together to transmit electrical signals. The product needs to be frequently bent and moved during application. The cable is flexible and can meet the needs of long-term movement without interruption. The coaxial core wire is twice obliquely wrapped, replacing the conventional core wire + ground wire. This reduces the wire diameter while ensuring the shielding effect and reducing the possibility of shield breakage during movement. An inner layer is added to the oblique wrap to tightly wrap the oblique wire to prevent the oblique wire from loosening during movement and affecting the shielding effect; to improve the softness and mobility of the wire, the conductor uses Category 6 fine copper conductor + bulletproof wire, and TPEE material with high mechanical properties is used as the insulating protective conductor; special flexible PVC material is used to ensure the flexibility and mobility of the product.

[0017] like Figure 1-3 , including two fillers 7, the fillers 7 are located in the gaps on both sides of the coaxial core wire 12, and the fillers 7 axially penetrate the outer sheath 1; because the product is a combination of various sizes of structures, fillings need to be added at appropriate positions during cabling to ensure that the semi-finished product is round.

[0018] like Figure 1-3 The first electrical signal group 3 includes three first core wires 9, which are twisted and connected; when the twisted unit and the cabling are produced, small pitch back-twisting is used to eliminate stress in the cabling, and filling is added at appropriate positions to ensure that the semi-finished product is round.

[0019] like Figure 1-3 The second electrical signal group 4 includes three second core wires 10, and the three second core wires 10 are twisted and connected.

[0020] like Figure 1-3 The low-frequency control signal group 5 includes two third core wires 11, which are twisted in pairs. The control signal wire pair is twisted in a small pitch to improve the product's tensile strength and resistance to electromagnetic signal interference.

[0021] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-core flexible bending-resistant sensor cable, characterized by: The invention comprises an outer sheath (1), a first electric signal group (3), a second electric signal group (4), a low-frequency control signal group (5) and a coaxial core wire (12), wherein the outer sheath (1) is wrapped around the outside of the first electric signal group (3), the second electric signal group (4), the low-frequency control signal group (5) and the coaxial core wire (12); and comprises two layers of oblique sheath (8) and an inner sheath (6), wherein the two layers of the oblique sheath (8) are wrapped around the outside of the coaxial core wire (12), and the inner sheath (6) is wrapped around the outside of the oblique sheath (8).

2. The multi-core flexible bending-resistant sensor wire according to claim 1, characterized in that: It comprises two fillers (7), wherein the fillers (7) are located in the gaps on both sides of the coaxial core wire (12), and the fillers (7) axially penetrate the outer sheath (1).

3. The multi-core flexible bending-resistant sensor wire according to claim 2, characterized in that: The first electrical signal group (3) comprises three first core wires (9), and the three first core wires (9) are twisted and connected.

4. The multi-core flexible bending-resistant sensor wire according to claim 3, characterized in that: The second electrical signal group (4) comprises three second core wires (10), and the three second core wires (10) are twisted and connected.

5. The multi-core flexible bending-resistant sensor wire according to claim 4, characterized in that: The low-frequency control signal group (5) includes two third core wires (11), and the two third core wires (11) are twisted together.

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