Flat cable for transmitting CAN signals

Abstract

The utility model discloses a flat cable for transmitting CAN (Controller Area Network) signals, which belongs to the technical field of CAN signal transmission cables and comprises a conductor for conducting electricity and meeting resistance requirements. The insulating part comprises an upper insulating film and a lower insulating film, the upper insulating film and the lower insulating film are attached to each other, and the conductor is wrapped by the upper insulating film and the lower insulating film; the shielding net is attached to the surface of the upper insulating film, and a plurality of hollow structures are arranged on the surface of the shielding net so as to obtain corresponding impedance. The weight of the flat cable is lighter than that of a traditional wire harness, the flat design effectively saves the wiring space in a vehicle, the flat cable can be integrated and arranged, the shielding net is provided with the hollow-out structure, corresponding stable impedance can be obtained by controlling the hollow-out proportion of the hollow-out structure, the thickness of the cable is effectively reduced, and the cable is convenient to use. The use of materials is reduced, so that the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of CAN signal transmission cables, and particularly relates to a flat cable for transmitting CAN signals. Background Art

[0002] CAN signal is short for Controller Area Network, which is a bus system for transmitting control information and data. CAN signals are widely used in automobiles, covering from basic vehicle control to advanced safety and entertainment systems. Cables for transmitting CAN signals need to meet indicators such as impedance, line resistance, and unit delay.

[0003] Traditional wire harnesses usually use 0.35-square double twisted wires to transmit this signal. With the continuous development of new energy vehicle technology, in order to improve the cruising range and obtain more interior space in the vehicle, automotive wire harnesses have put forward more requirements for flatness, integration, and lightweight. Therefore, a flat cable for transmitting CAN signals is needed. Content of the Utility Model

[0004] The utility model overcomes the deficiencies of the prior art and provides a flat cable for transmitting CAN signals to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a flat cable for transmitting CAN signals, including

[0006] a conductor that conducts electricity and meets the resistance requirements;

[0007] an insulating part, the insulating part includes an upper insulating film and a lower insulating film, the upper insulating film and the lower insulating film are mutually adhered, and the upper insulating film and the lower insulating film cover the conductor;

[0008] a shielding net, the shielding net is adhered to the surface of the upper insulating film, and a plurality of hollow structures are provided on the surface of the shielding net to obtain the corresponding impedance.

[0009] In a preferred embodiment of the utility model, it further includes an outer insulating film, and the outer insulating film is attached to the surface of the shielding net for insulation.

[0010] In a preferred embodiment of the utility model, the outer insulating film, the upper insulating film, and the lower insulating film are all PET films.

[0011] In a preferred embodiment of the utility model, the conductor is a flat copper structure.

[0012] In a preferred embodiment of the utility model, the end of the conductor protrudes from the ends of the upper insulating film and the lower insulating film.

[0013] In a preferred embodiment of the present utility model, the shielding net is an aluminum net.

[0014] In a preferred embodiment of the present utility model, the thicknesses of the upper insulating film and the lower insulating film are both 0.14 mm.

[0015] In a preferred embodiment of the present utility model, the number of the hollow structures is several, and they are evenly distributed on the surface of the shielding net.

[0016] The present utility model solves the defects existing in the background art and has the following beneficial effects:

[0017] 1. The flat cable of the present utility model is lighter in weight compared with the traditional wire harness. The flattened design effectively saves the wiring space in the vehicle, and can be integrally arranged, realizing the flattening, integration and lightening of the automotive wire harness;

[0018] 2. The shielding net of the present utility model is provided with hollow structures, which can obtain corresponding stable impedance by controlling the hollow ratio of the hollow structures, effectively reducing the thickness of the cable and reducing the use of materials to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0020] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the enlarged view of part A in

[0022] Figure 3 It is a cross-sectional view of the preferred embodiment of the present utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the shielding net of the preferred embodiment of the present utility model;

[0024] In the figure: 10, conductor; 20, insulating part; 21, upper insulating film; 22, lower insulating film; 30, shielding net; 31, hollow structure; 40, outer insulating film. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will disclose multiple embodiments of the present utility model in diagrams. For the sake of clear illustration, many physical details will be described together in the following narrative. However, it should be understood that these physical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these physical details are unnecessary. In addition, for the sake of simplifying the diagrams, some conventional structures and components will be illustrated in a simple schematic manner in the diagrams.

[0026] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" can explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] This embodiment provides a flat cable for transmitting CAN signals. The weight of this flat cable is lighter than that of traditional wire harnesses. The flattened design effectively saves the wiring space in the vehicle and enables its integrated layout, achieving the flattening, integration, and lightweighting of automotive wire harnesses.

[0028] Combined with Figures 1 to 4 As shown, the flat cable of this embodiment includes a conductor 10, an insulating part 20, and a shielding net 30. The conductor 10 conducts electricity and meets the resistance requirements, while the insulating part 20 can meet the CAN unit delay requirements, and the shielding net 30 can control the characteristic impedance.

[0029] In this embodiment, it further includes an outer insulating film 40. The outer insulating film 40 is attached to the surface of the shielding net 30 for insulation. The presence of the outer insulating film 40 realizes the overall insulation treatment of the cable.

[0030] Combined with Figures 1 to 3 As shown, the insulating part 20 of this embodiment includes an upper insulating film 21 and a lower insulating film 22. The upper insulating film 21 and the lower insulating film 22 are mutually adhered, and the upper insulating film 21 and the lower insulating film 22 cover the conductor 10. The thickness of both the upper insulating film 21 and the lower insulating film 22 in this embodiment is 0.14 mm, the size of the conductor 10 is 0.2 X 1.2 mm, and the conductor 10 in this embodiment is a flat copper structure, which meets the CAN wire resistance requirements.

[0031] In this embodiment, the outer insulating film 40, the upper insulating film 21, and the lower insulating film 22 are all PET films. The end of the conductor 10 protrudes from the ends of the upper insulating film 21 and the lower insulating film 22. The dielectric constant of the PET film in this embodiment is less than 2.7 to meet the CAN unit delay requirement.

[0032] Combined with Figure 1 , Figure 2 and Figure 4 As shown, the shielding net 30 of this embodiment is adhered to the surface of the upper insulating film 21. A number of hollow structures 31 are provided on the surface of the shielding net 30 to obtain the corresponding impedance. The shielding net 30 is an aluminum net. The number of the hollow structures 31 is several and they are evenly distributed on the surface of the shielding net 30. In this embodiment, by controlling the hollowing ratio of the hollow structure 31, the corresponding stable impedance is obtained, effectively reducing the thickness of the cable and reducing the use of materials to reduce costs.

[0033] In summary, the flat cable of this embodiment is lighter in weight compared to traditional wire harnesses. The flattened design effectively saves the wiring space in the vehicle, enables its integrated layout, and the shielding net 30 is provided with the hollow structure 31, which can obtain the corresponding stable impedance by controlling the hollowing ratio of the hollow structure 31, effectively reducing the thickness of the cable and reducing the use of materials to reduce costs.

[0034] Although the present utility model has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the present utility model. That is, the methods, systems, devices, etc. discussed above are all examples. Various configurations can be appropriately omitted, replaced, or various processes or components can be added. For example, in an alternative configuration, the method can be executed in a different order from the described order, and / or various stages can be added, omitted, and / or combined. Moreover, the features described with respect to certain configurations can be combined in various other configurations. Different aspects and elements of the configurations can be combined in a similar manner. In addition, with the development of technology, many elements are only examples and do not limit the scope of the present disclosure or the claims.

[0035] Specific details are given in the specification to provide a thorough understanding of the exemplary configurations including the implementation. However, the configurations can be practiced without these specific details. For example, well-known circuits, processes, algorithms, structures, and technologies have been shown without unnecessary details to avoid obscuring the configurations. The description only provides example configurations and does not limit the scope, applicability, or configuration of the claims. On the contrary, the previous description of the configurations will provide those skilled in the art with an enabling description for implementing the described technologies. Various changes can be made to the functions and arrangements of the elements without departing from the spirit or scope of the present disclosure.

[0036] In addition, although each operation can be described as a sequential process, many operations can be performed in parallel or simultaneously. Additionally, the order of the operations can be rearranged. A process may have other steps. Further, examples of the methods can be implemented by hardware, software, firmware, middleware, code, hardware description language, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments for performing the necessary tasks can be stored in a non-transitory computer-readable medium such as a storage medium and executed by a processor to perform the described tasks.

[0037] In summary, it is intended that the above detailed description be considered illustrative and not restrictive, and it should be understood that the claims (including all equivalents) are intended to define the spirit and scope of the present invention. These embodiments should be understood as only for illustrating the present invention and not for limiting the protection scope of the present invention. After reading the content recorded in the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims

1. A flat cable for transmitting CAN signals, characterized in that: include A conductor (10), wherein the conductor (10) conducts electricity and meets resistance requirements; an insulating portion (20), the insulating portion (20) comprising an upper insulating film (21) and a lower insulating film (22), the upper insulating film (21) and the lower insulating film (22) being bonded to each other, and the upper insulating film (21) and the lower insulating film (22) covering the conductor (10); A shielding net (30) is attached to the surface of the upper insulating film (21), and a plurality of hollow structures (31) are provided on the surface of the shielding net (30) to obtain corresponding impedance.

2. A flat cable for transmitting CAN signals according to claim 1, characterized in that: It also includes an outer insulating film (40), which is attached to the surface of the shielding net (30) for insulation.

3. A flat cable for transmitting CAN signals according to claim 2, characterized in that: The outer insulating film (40), the upper insulating film (21) and the lower insulating film (22) are all PET films.

4. A flat cable for transmitting CAN signals according to claim 1, characterized in that: The conductor (10) is a flat copper structure.

5. The flat cable for transmitting CAN signals according to claim 1, characterized in that: The end portion of the conductor (10) protrudes from the end portions of the upper insulating film (21) and the lower insulating film (22).

6. The flat cable for transmitting CAN signals according to claim 1, characterized in that: The shielding net (30) is an aluminum net.

7. The flat cable for transmitting CAN signals according to claim 1, characterized in that: The thickness of the upper insulating film (21) and the lower insulating film (22) are both 0.14 mm.

8. The flat cable for transmitting CAN signals according to claim 1, characterized in that: The number of the hollow structures (31) is several and they are evenly distributed on the surface of the shielding net (30).

Images