A flexible cable harness

Abstract

The application provides a flexible cable harness, and relates to the field of cables, which comprises a first wire, a second wire and a tension detection part; the first wire comprises a plurality of parallel first flat wires, a first upper insulating layer and a first lower insulating layer; the second wire comprises a plurality of parallel second flat wires, a second upper insulating layer and a second lower insulating layer; the first wire is arranged on the upper side of the second wire, or the first wire and the second wire are arranged side by side; the left end of the first wire and the left end of the second wire are connected to the same first plug, the right end of the first wire is connected to a second plug, and the right end of the second wire is connected to a third plug; the tension detection part is arranged on the first wire and / or the second wire and is used for detecting the tension of the first wire and / or the second wire. The flexible cable harness has the characteristics of light weight and flatness, and realizes tension detection without changing the wire layout and size, thereby improving the overall integration of the system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cables, in particular to a flexible cable harness. BACKGROUND

[0002] The conventional connector harness covers different wiring relationships, each of which corresponds to a separate wire connection, resulting in a bulky product that is not suitable for use and has a large overall weight. The use of shielding tape for the shielding layer results in a larger product shape that cannot meet product use and poor electromagnetic interference effect. With the upgrading of equipment, the production requirements of the conventional connector harness have not met the transmission of device signals, and higher demands for lightweight, flattening, miniaturization and integration have been put forward. In addition, the existing connector harness does not have a tension detection function, and may be pulled externally during use, causing the harness to fall off or break. Therefore, the present application provides a lightweight, flattened and tension detection function flexible cable harness to solve the above technical problems. SUMMARY

[0003] In view of the above technical problems, the present application provides a flexible cable harness, comprising: a first wire, a second wire and a tension detection part.

[0004] The first wire comprises a plurality of first flat wires arranged in parallel, a first upper insulating layer and a first lower insulating layer; the upper side of the first flat wire is provided with the first upper insulating layer, and the lower side of the first flat wire is provided with the first lower insulating layer.

[0005] The second wire comprises a plurality of second flat wires arranged in parallel, a second upper insulating layer and a second lower insulating layer; the upper side of the second flat wire is provided with the second upper insulating layer, and the lower side of the second flat wire is provided with the second lower insulating layer.

[0006] The first wire is arranged on the upper side of the second wire, or the first wire and the second wire are arranged side by side; the left end of the first wire and the left end of the second wire are connected to the same first plug, the right end of the first wire is connected to a second plug, and the right end of the second wire is connected to a third plug.

[0007] The tension detection part is arranged on the first wire and / or the second wire, and is used for detecting the tension of the first wire and / or the second wire.

[0008] Optionally, the height and width of the first flat wire and the second flat wire are equal.

[0009] Optionally, the first upper insulating layer, the first lower insulating layer, the second upper insulating layer and the second lower insulating layer are made of the same material.

[0010] Optionally, the first upper insulating layer, the first lower insulating layer, the second upper insulating layer and the second lower insulating layer are provided with grooves matched with the flat wires, and the flat wires are combined with the insulating layers in an embedded manner.

[0011] Optionally, when the first wire is arranged on the upper side of the second wire, the left side of the first wire is bonded with the left side of the second wire by glue; the right side of the first wire is arranged separately from the right side of the second wire; and the first flat wire and the second flat wire are arranged alternately.

[0012] Optionally, when the first wire and the second wire are arranged side by side, the first flat wire is located in the middle, and the second flat wire is located on both sides of the first flat wire; and the first flat wire and the second flat wire share the first upper insulating layer and the first lower insulating layer.

[0013] Optionally, the upper side and / or the lower side of the first wire and the second wire are provided with a shielding layer.

[0014] Optionally, the tension detection part comprises a strain part, a first elastic insulating layer, a stretchable wire and a second elastic insulating layer.

[0015] The strain part comprises a first strain resistor, a second strain resistor, a third strain resistor, a fourth strain resistor and an X-shaped conductive piece.

[0016] The first strain resistor, the second strain resistor, the third strain resistor and the fourth strain resistor are all double S-shaped resistors, and the double S-shaped resistor comprises two S-shaped resistors arranged in series one above the other; the first strain resistor and the second strain resistor are symmetrically arranged on both sides of a Y-axis; the fourth strain resistor and the second strain resistor are symmetrically arranged on both sides of an X-axis; and the third strain resistor and the first strain resistor are symmetrically arranged on both sides of the X-axis; wherein the X-axis is a horizontal center line of the tension detection part, the Y-axis is a vertical center line of the tension detection part, and the horizontal direction is the extension direction of the first wire or the second wire.

[0017] The stretchable wire comprises an intermittent wire and a curved wire; the intermittent wire is arranged on both sides of the curved wire; the number of the intermittent wire is two; the number of the curved wire is multiple, and the total number and position of the intermittent wire and the curved wire correspond to the total number and position of the first flat wire or the second flat wire; the curved wire has a flat portion on both sides and a wavy curved portion in the middle, and the length of the wavy curved portion is the same as the length of the intermittent portion of the intermittent wire.

[0018] The intermittent wire comprises a first terminal at a left lower position, a second terminal at a right lower position, a third terminal at a left upper position, and a fourth terminal at a right upper position; the first terminal is coaxially arranged with the second terminal; the third terminal is coaxially arranged with the fourth terminal; the first terminal is connected with an outer side end point of the first strain resistance, the second terminal is connected with an outer side end point of the second strain resistance, the third terminal is connected with an outer side end point of the third strain resistance, and the fourth terminal is connected with an outer side end point of the fourth strain resistance.

[0019] The four end points of the X-shaped conductive piece are respectively connected with inner side end points of the first strain resistance, the second strain resistance, the third strain resistance and the fourth strain resistance at corresponding positions.

[0020] Optionally, the strain part, the first elastic insulation layer, the stretchable wire and the second elastic insulation layer are sequentially arranged from top to bottom, the first elastic insulation layer is used for isolating the strain part and the stretchable wire except for the connecting end points; and the upper side of the strain part is covered with a flexible protective layer.

[0021] Optionally, the first strain resistance is alternatively arranged on the top surface and the bottom surface of the bending wire and does not contact with the bending wire; the second strain resistance, the third strain resistance and the fourth strain resistance are arranged in the same way as the first strain resistance; the strain part and the stretchable wire are casted and covered by the first elastic insulation layer for insulation isolation; and the overall thickness of the tension detection part is the same as the thickness of the first wire or the second wire.

[0022] Compared with the prior art, the application has the following technical effects:

[0023] 1. The flat flexible wire harness structure is adopted, the thickness of single layer wire can reach 0.2-0.5mm, which meets the needs of most flat space devices; the flexible wire harness is adopted, the disadvantages of the previous flying wire setting are overcome, and the system simplification is improved. The flexible wire harness can realize electrical connection between each cabin section or component by connecting different plugs, and ensure the normal interconnection and transmission of power supply, switch acquisition signal, ignition driving signal, video and communication data and other signals.

[0024] 2. The flexible wire harness has a tension detection function, the tension detection part can detect the tension of the whole cross section range of the wire, and the detection accuracy is improved; the tension detection part is integrally arranged with the wire, the tension detection is realized without changing the wire layout and size, and the overall integration of the system is improved. The user can connect the corresponding terminal according to the actual needs, and the convenience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1This is a schematic diagram of a first structure of a flexible flat cable harness according to an embodiment of the present invention;

[0026] Figure 2 This is a left view of a first structure of a flexible flat cable harness according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of a second structure of a flexible flat cable harness according to an embodiment of the present invention;

[0028] Figure 4 The left schematic diagram shows a second structure of a flexible flat cable harness provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of a flexible flat cable harness in practical application according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the tensile force detection part in a flexible flat cable harness according to an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the strain section in a flexible flatbed cable harness according to an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of a stretchable conductor in a flexible flat cable harness according to an embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of a single-sided layout of the strain section in a flexible flat cable harness according to an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of a flexible flat cable harness with alternating strain gauge layout, provided as an embodiment of the present invention.

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0037] like Figures 1-10 As shown, an embodiment of the present invention provides a flexible flat cable harness, including: a first conductor 1, a second conductor 2, and a tensile force detection unit 3;

[0038] The first conductor 1 includes multiple parallel first flat conductors 11, a first upper insulation layer 12, and a first lower insulation layer 13; the first upper insulation layer 12 is disposed on the upper side of the first flat conductor 11, and the first lower insulation layer 13 is disposed on the lower side of the first flat conductor 11.

[0039] The second wire 2 comprises a plurality of parallelly arranged second flat wires 21, a second upper insulating layer 22 and a second lower insulating layer 23; the upper side of the second flat wire 21 is provided with the second upper insulating layer 22, and the lower side of the second flat wire 21 is provided with the second lower insulating layer 23;

[0040] The first wire 1 is arranged on the upper side of the second wire 2 (the first structure, as shown in Figure 1 ), or the first wire 1 is arranged side by side with the second wire 2 (the second structure, as shown in Figure 3 ); the left end of the first wire 1 and the left end of the second wire 2 are connected to the same first plug 5 (as shown in Figure 5 ), the right end of the first wire 1 is connected to the second plug 6, and the right end of the second wire 2 is connected to the third plug 7;

[0041] The tension detection part 3 is arranged on the first wire 1 and / or the second wire 2, and is used for detecting the tension of the first wire 1 and / or the second wire 2.

[0042] Optionally, the height and width of the first flat wire 11 and the second flat wire 21 are equal; the material of the first flat wire 11 and the second flat wire 21 is copper.

[0043] Optionally, the material of the first upper insulating layer 12, the first lower insulating layer 13, the second upper insulating layer 22 and the second lower insulating layer 23 is the same, and the material comprises saturated polyester resin, polyimide, polyurethane, etc.

[0044] Optionally, the first upper insulating layer 12, the first lower insulating layer 13, the second upper insulating layer 22 and the second lower insulating layer 23 are all provided with grooves matched with the flat wires, and the flat wires are combined with the insulating layers in an embedded manner.

[0045] Optionally, when the first wire 1 is arranged on the upper side of the second wire 2, the left side of the first wire 1 and the left side of the second wire 2 are bonded by glue; the right side of the first wire 1 and the right side of the second wire 2 are arranged separately; the first flat wire 11 and the second flat wire 21 are arranged alternately (as shown in Figure 2 ).

[0046] Optionally, when the first wire 1 and the second wire 2 are arranged side by side, the first flat wire 11 is located in the middle, and the second flat wire 21 is located on both sides of the first flat wire 11; the first flat wire 11 and the second flat wire 21 share the first upper insulating layer 12 and the first lower insulating layer 13 (as shown in Figure 4 ).

[0047] Optionally, the upper side and / or the lower side of the first conductive wire 1 and the second conductive wire 2 are provided with a shielding layer 4; the shielding layer 4 can be a copper foil or the like.

[0048] Optionally, the tension detection part 3 comprises a strain part 31, a first elastic insulating layer 32, a stretchable conductive wire 33 and a second elastic insulating layer 34 (as shown in Figure 6 );

[0049] The strain part 31 comprises a first strain resistor 311, a second strain resistor 312, a third strain resistor 313, a fourth strain resistor 314 and an X-shaped conductive piece 315 (as shown in Figure 7 );

[0050] The first strain resistor 311, the second strain resistor 312, the third strain resistor 313 and the fourth strain resistor 314 are all double S-shaped resistors, which comprise two S-shaped resistors arranged in series; the first strain resistor 311 and the second strain resistor 312 are symmetrically arranged on both sides of the Y-axis; the fourth strain resistor 314 and the second strain resistor 312 are symmetrically arranged on both sides of the X-axis; the third strain resistor 313 and the first strain resistor 311 are symmetrically arranged on both sides of the X-axis; wherein the X-axis is the horizontal center line of the tension detection part 3, the Y-axis is the vertical center line of the tension detection part 3, and the horizontal direction is the extension direction of the first conductive wire 1 or the second conductive wire 2;

[0051] The stretchable conductive wire 33 comprises an intermittent conductive wire 331 and a curved conductive wire 332 (as shown in Figure 8 );The intermittent conductive wire 331 is arranged on both sides of the curved conductive wire 332; the number of the intermittent conductive wire 331 is two; the number of the curved conductive wire 332 is multiple, and the total number and position of the intermittent conductive wire 331 and the curved conductive wire 332 correspond to the total number and position of the first flat conductive wire 11 or the second flat conductive wire 21; both sides of the curved conductive wire 332 are flat parts, and the middle part is a wave-shaped curved part, and the length of the wave-shaped curved part is the same as the length of the intermittent part of the intermittent conductive wire 331;

[0052] The intermittent conductor wire 331 comprises a first terminal 331a at a left lower position, a second terminal 331b at a right lower position, a third terminal 331c at a left upper position, and a fourth terminal 331d at a right upper position; the first terminal 331a is coaxially arranged with the second terminal 331b; the third terminal 331c is coaxially arranged with the fourth terminal 331d; the first terminal 331a is connected to an outer side end point of the first strain resistance 311, the second terminal 331b is connected to an outer side end point of the second strain resistance 312, the third terminal 331c is connected to an outer side end point of the third strain resistance 313, and the fourth terminal 331d is connected to an outer side end point of the fourth strain resistance 314.

[0053] The four end points of the X-shaped conductive member 315 are respectively connected to inner side end points of the first strain resistance 311, the second strain resistance 312, the third strain resistance 313, and the fourth strain resistance 314 at corresponding positions.

[0054] Optionally, the strain part 31, the first elastic insulating layer 32, the stretchable conductor wire 33, and the second elastic insulating layer 34 are sequentially arranged from top to bottom (single-sided layout, such as Figure 9 ); the first elastic insulating layer 32 is used to isolate the strain part 31 and the stretchable conductor wire 33 except for the connection end points; the upper side of the strain part 31 is covered with a flexible protective layer 35.

[0055] Optionally, the first strain resistance 311 is alternatively arranged through the top surface and the bottom surface of the curved conductor wire 332, and the two are not in contact (alternative arrangement, such as Figure 10 ); the second strain resistance 312, the third strain resistance 313, and the fourth strain resistance 314 are arranged in the same way as the first strain resistance 311; the strain part 31 and the stretchable conductor wire 33 are cast and covered by the first elastic insulating layer 32, which is insulated and isolated; the overall thickness of the tension detection part 3 is the same as the thickness of the first conductor wire 1 or the second conductor wire 2.

[0056] Optionally, the “\ part” and the “ / part” in the X-shaped conductive member 315 are arranged in layers and are communicated through a conductive ring arranged in the middle part, and the conductive ring does not contact the curved conductor wire 332; the “\ part” and the “ / part” are respectively arranged on both sides of the top surface and the bottom surface of the curved conductor wire 332.

[0057] Optionally, the first elastic insulating layer 32 and the second elastic insulating layer 34 are made of the same material; the elastic modulus of the first elastic insulating layer 32 is less than or equal to the elastic modulus of the first upper insulating layer 12.

[0058] Optionally, the material of the first strain resistance 311, the second strain resistance 312, the third strain resistance 313 and the fourth strain resistance 314 is single-layer or multi-layer conductive graphene, and the resistance of the conductive graphene increases with the increase of deformation.

[0059] Optionally, the tension detection part 3 is integrally arranged with the first wire 1 or the second wire 2, the section size of the intermittent wire 331 and the curved wire 332 is the same as that of the first flat wire 11 or the second flat wire 21, and the intermittent wire 331 and the curved wire 332 are part of the first flat wire 11 or the second flat wire 21.

[0060] Optionally, the resistance of the first strain resistance 311 is R1, the resistance of the second strain resistance 312 is R2, the resistance of the third strain resistance 313 is R3, and the resistance of the fourth strain resistance 314 is R4; in the initial state (when not under stress), R1=R2=R3=R4.

[0061] Working principle of the tension detection part 3:

[0062] When the detection end uses two terminals: when the detection end is connected to the first terminal 331a and the third terminal 331c, the tension of the entire longitudinal section of the first wire 1 or the second wire 2 is detected by the overall change of R1 and R3; when the detection end is connected to the first terminal 331a and the fourth terminal 331d, the tension of the entire longitudinal section of the first wire 1 or the second wire 2 is detected by the overall change of R1 and R4; when the detection end is connected to the second terminal 331b and the fourth terminal 331d, the tension of the entire longitudinal section of the first wire 1 or the second wire 2 is detected by the overall change of R2 and R4; when the detection end is connected to the second terminal 331b and the third terminal 331c, the tension of the entire longitudinal section of the first wire 1 or the second wire 2 is detected by the overall change of R2 and R3; the user can connect the above two terminals according to the need to realize the tension detection of the entire section;

[0063] When the detection end uses four terminals: the overall resistance change of R1 and R2 is detected through the first terminal 331a and the second terminal 331b, the overall resistance change of R3 and R4 is detected through the third terminal 331c and the fourth terminal 331d, and the stress on the left and right sides of the wire is detected by comparing the resistance value change of R1+R2 and R3+R4, and it is judged whether the stress on the left and right sides of the wire is balanced. The overall resistance change of R1+R2+R3+R4 can also be detected through the four terminals to improve the detection accuracy.

[0064] Finally, it should be noted that the above examples are merely intended to illustrate the technical solutions of the present application and not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A flexible wire harness comprising: The first wire, the second wire and the tension detection part; The first wire comprises a plurality of parallel first flat wires, a first upper insulating layer and a first lower insulating layer; The upper side of the first flat wire is provided with the first upper insulating layer, and the lower side of the first flat wire is provided with the first lower insulating layer; The second wire comprises a plurality of parallel second flat wires, a second upper insulating layer and a second lower insulating layer; The upper side of the second flat wire is provided with the second upper insulating layer, and the lower side of the second flat wire is provided with the second lower insulating layer; The first wire is arranged on the upper side of the second wire, or the first wire is arranged side by side with the second wire; The left end of the first wire and the left end of the second wire are connected to the same first plug, the right end of the first wire is connected to a second plug, and the right end of the second wire is connected to a third plug; The tension detection part is arranged on the first wire and / or the second wire, and is used for detecting the tension of the first wire and / or the second wire; The tension detection part comprises a strain part, a first elastic insulating layer, a stretchable wire and a second elastic insulating layer; The strain part comprises a first strain resistance, a second strain resistance, a third strain resistance, a fourth strain resistance and an X-shaped conductive piece; The first strain resistance, the second strain resistance, the third strain resistance and the fourth strain resistance are all double S-shaped resistances, and the double S-shaped resistance comprises two S-shaped resistances arranged in series; The first strain resistance and the second strain resistance are symmetrically arranged on both sides of the Y axis; The fourth strain resistance and the second strain resistance are symmetrically arranged on both sides of the X axis; The third strain resistance and the first strain resistance are symmetrically arranged on both sides of the X axis; Wherein, the X axis is the transverse center line of the tension detection part, the Y axis is the longitudinal center line of the tension detection part, and the transverse direction is the extension direction of the first wire or the second wire; The stretchable wire comprises an intermittent wire and a curved wire; The intermittent wire is arranged on both sides of the curved wire; The number of the intermittent wires is two; the number of the curved wires is multiple, and the total number and position of the intermittent wires correspond to the total number and position of the first flat wire or the second flat wire; the curved wires are flat on both sides and wavy in the middle, and the length of the wavy part is the same as the length of the intermittent part; the intermittent wires include a first terminal at the lower left position, a second terminal at the lower right position, a third terminal at the upper left position, and a fourth terminal at the upper right position; the first terminal is coaxially arranged with the second terminal; the third terminal is coaxially arranged with the fourth terminal; the first terminal is connected to the outer end point of the first strain resistance, the second terminal is connected to the outer end point of the second strain resistance, the third terminal is connected to the outer end point of the third strain resistance, and the fourth terminal is connected to the outer end point of the fourth strain resistance; the four end points of the X-shaped conductive part are connected to the inner end points of the first strain resistance, the second strain resistance, the third strain resistance, and the fourth strain resistance at the corresponding positions.

2. The flexible wire harness of claim 1, wherein, Wherein, The height and width of the first flat wire and the second flat wire are equal.

3. The flexible wire harness of claim 2, wherein, Wherein, The materials of the first upper insulating layer, the first lower insulating layer, the second upper insulating layer, and the second lower insulating layer are the same.

4. The flexible wire harness of claim 3, wherein, Wherein, The first upper insulating layer, the first lower insulating layer, the second upper insulating layer, and the second lower insulating layer are all provided with grooves matched with the flat wires, and the flat wires are combined with the insulating layers in an embedded manner.

5. The flexible wire harness of claim 4, wherein, Wherein, When the first wire is arranged on the upper side of the second wire, the left side of the first wire is bonded to the left side of the second wire by glue; the right side of the first wire is separately arranged from the right side of the second wire; and the first flat wire and the second flat wire are staggered.

6. The flexible wire harness of claim 4, wherein, Wherein, When the first wire and the second wire are arranged side by side, the first flat wire is located in the middle, and the second flat wire is located on both sides of the first flat wire; the first flat wire and the second flat wire share the first upper insulating layer and the first lower insulating layer.

7. The flexible wire harness of claim 4, wherein, Wherein, The upper side and / or the lower side of the first wire and the second wire are provided with a shielding layer.

8. The flexible wire harness of claim 1, wherein, Wherein, The strain part, the first elastic insulating layer, the stretchable wire, and the second elastic insulating layer are arranged in order from top to bottom, the first elastic insulating layer is used to isolate the strain part and the stretchable wire except for the connection end points; and the upper side of the strain part is covered with a flexible protective layer.

9. The flexible wire harness of claim 1, wherein, Wherein, The first strain resistance is alternately arranged on the top surface and the bottom surface of the curved wire and does not contact each other; the second strain resistance, the third strain resistance, and the fourth strain resistance are arranged in the same way as the first strain resistance; the strain part and the stretchable wire are casted and covered by the first elastic insulating layer for insulation isolation; and the overall thickness of the tension detection part is the same as the thickness of the first wire or the second wire.

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