Flat cable overcoming difference in length of inner and outer diameters

Abstract

The utility model provides a kind of flat cable overcoming the length difference of inside and outside diameter, include: line body and protection piece, line body includes two flat cable, at least one flat cable is equipped with pre-bending part, pre-bending part protrudes in the plane of flat cable, protection piece is sleeved in a part of two flat cable and contains pre-bending part, protection piece has opening, to allow pre-bending part to pass through opening after stretching.The flat cable overcoming the length difference of inside and outside diameter of the utility model can make the flat cable of bending no longer due to the mismatch of inside and outside diameter length and the problem of excessive flexure of outer ring, excessive compression deformation of inner ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of flat cables, especially a kind of flat cable overcoming the length difference of inner diameter and outer diameter. BACKGROUND

[0002] Flat cable is the cable that is made of flat and soft conductor, thin and flexible adhesive film or paper film through high temperature bonding. Flat cable has the advantages of being able to be bent and folded at will, thin thickness, small volume, simple connection, easy disassembly, easy to solve electromagnetic interference (EMI) and the like. Flat cable is usually composed of two flat cables to transmit and receive signals respectively.

[0003] However, when the flat cable is bent, the flat cable in the outer circle is stretched longer, and the flat cable in the inner circle is forced to compress and deform, which can cause bending difficulty or partial deformation to damage the cable. The above problems also occur in general cables, but are more serious in flat cables. SUMMARY

[0004] The utility model aims at solving various problems of the existing flat cable, and provides a kind of flat cable overcoming the length difference of inner diameter and outer diameter.

[0005] To achieve the above object and other objects, the utility model provides a kind of flat cable overcoming the length difference of inner diameter and outer diameter, which includes: a cable body including two superimposed flat cables, wherein at least one of the flat cables is provided with a pre-bending portion, and the pre-bending portion protrudes from the plane of the flat cable; and a protective member is sleeved on a part of the two superimposed flat cables and accommodates the pre-bending portion, and the protective member has an opening to allow the pre-bending portion to pass through the opening after being stretched.

[0006] Optionally, the pre-bending portion has multiple undulations.

[0007] Optionally, the pre-bending portion has elasticity to allow the pre-bending portion to retreat from the opening to the inside of the protective member and protrude from the plane of the flat cable.

[0008] Optionally, the two superimposed flat cables each have the pre-bending portion, and at least one of the pre-bending portions is accommodated in the protective member.

[0009] Optionally, the two pre-bending portions protrude in opposite directions respectively.

[0010] Optionally, the two pre-bending portions are accommodated in the same protective member.

[0011] Optionally, the two pre-bending portions are located at two ends of the cable body respectively.

[0012] Optionally, the two pre-bending portions are respectively accommodated in the two guards.

[0013] Therefore, the flat cable with the difference between the inner diameter and the outer diameter can be overcome by the design of the pre-bending portion and the guard.

[0014] For further understanding of the features and technical contents of the present application, please refer to the following detailed description and drawings of the present application. However, the description and drawings are only used to illustrate the present application, and do not limit the scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a perspective view of a flat cable with the difference between the inner diameter and the outer diameter according to a first embodiment of the present application;

[0016] Figure 2 FIG. 2 is a side view of the flat cable with the difference between the inner diameter and the outer diameter according to the first embodiment of the present application;

[0017] Figure 3 FIG. 3 is a perspective view of a flat cable with the difference between the inner diameter and the outer diameter according to a second embodiment of the present application;

[0018] Figure 4 FIG. 4 is a perspective view of a flat cable with the difference between the inner diameter and the outer diameter according to a third embodiment of the present application;

[0019] REFERENCE NUMERALS

[0020] 100 flat cable

[0021] 100a flat cable

[0022] 100b flat cable

[0023] 100c flat cable

[0024] 1 wire body

[0025] 11 flat cable

[0026] 111 pre-bending portion

[0027] 12 flat cable

[0028] 121 pre-bending portion

[0029] 2 guard

[0030] 21 opening

[0031] 2a Protective components

[0032] 2b Protective components

[0033] 3. Connecting terminals Detailed Implementation

[0034] To fully understand this utility model, the following specific embodiments, in conjunction with the accompanying drawings, will provide a detailed description. Those skilled in the art can understand the purpose, features, and effects of this utility model from the content disclosed in this specification. It should be noted that this utility model can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the inventive point of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions based on actual dimensions. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the claims of this utility model. The explanation is as follows:

[0035] like Figure 1 As shown, the flat cable 100 of the first embodiment of the present invention for overcoming the difference in inner and outer diameter lengths includes: cable body 1 and protective component 2.

[0036] The wire body 1 includes two overlapping flat ribbon cables 11 and 12, wherein at least one flat ribbon cable 11 has a pre-bent portion 111. The pre-bent portion 111 protrudes from the plane of the flat ribbon cable 11. In this embodiment, the pre-bent portion 111 is wavy and has multiple undulations, and if the flat ribbon cable 11 is stretched, the pre-bent portion 111 can release a longer length. However, the present invention is not limited to this; the pre-bent portion 111 can have only a single undulation, or various bending and deflecting shapes, thereby compressing the length of the wire in a space.

[0037] The protective member 2 is fitted over a portion of two overlapping flat cables 11, 12 and accommodates a pre-bent portion 111. The protective member 2 has an opening 21 to allow the pre-bent portion 111 to pass through the opening 21 after being stretched. Typically, the opening height of the opening 21 is slightly greater than the overall thickness of the two overlapping flat cables 11, 12, allowing the stretched pre-bent portion 111 to extend out of the opening 21 and retract into the protective member 2 upon the loss of external force. In this embodiment, the protective member 2 is in the form of a housing; however, the invention is not limited thereto. In other embodiments, the protective member 2 can be of other shapes, providing space to accommodate and protect the pre-bent portion 111. Preferably, the protective member 2 is fixedly connected to the connection terminal 3 of the flat cable 100, so that the position of the protective member 2 is not affected by the movement of the cable 1.

[0038] By designing the pre-bending portion 111 and the protective element 2, when bending the wire 1, the flat ribbon cable 11 with the pre-bending portion 111 is used as the outer ring, and the flat ribbon cable 12 without the pre-bending portion 111 is used as the inner ring. Then, the flat ribbon cable 11 is stretched to release part or all of the length of the pre-bending portion 111 to match the flat ribbon cable 12 as the inner ring. When the wire 1 is no longer bent, the excess length of the flat ribbon cable 11 is folded back into the protective element 2, thus matching the lengths of the flat ribbon cables 11 and 12 again.

[0039] Furthermore, in this embodiment, the pre-bent portion 111 has elasticity to allow it to retract from outside the opening 21 into the protective member 2 and protrude from the plane of the flat cable 11. However, the present invention is not limited to this. In other embodiments, if it is determined that the flat cable 100 is used only once or has a constant curvature, then the pre-bent portion 111 does not necessarily need to be configured to have the ability to automatically retract into the protective member 2 for reuse.

[0040] like Figure 2 As shown, this utility model further proposes a second embodiment of a flat cable 100a that overcomes the difference in length between the inner and outer diameters. The difference between this and the first embodiment is that in the second embodiment, each of the two overlapping flat cables 11 and 12 has a pre-bent portion 111 or 121, and at least one of the pre-bent portions 111 or 121 is accommodated in the protective member 2. The design of each of the flat cables 11 and 12 having a pre-bent portion 111 or 121 allows for applications with varying curvatures, and eliminates the need for any one flat cable to be used as the outer ring; either flat cable can be used as either the inner or outer ring.

[0041] In this embodiment, the two pre-bent portions 111 and 121 protrude in opposite directions, and the two pre-bent portions 111 and 121 are accommodated in the same protective member 2.

[0042] However, this invention is not limited to this; in other embodiments, such as... Figure 3 As shown, this utility model proposes a third embodiment of a flat cable 100b that overcomes the difference in length between the inner and outer diameters. The difference between this and the second embodiment is that the two pre-bending portions 111 and 121 in the third embodiment are located at both ends of the cable body 1. However, this utility model is not limited to this; in other embodiments, the pre-bending portion 121 can also be located at any position on the cable body 1, such as the middle section of the cable body 1, to accommodate special bending requirements.

[0043] like Figure 4As shown, the utility model also proposes fourth embodiment's flat cable 100c that overcomes the flat cable of internal and external diameter length difference. Its difference with third embodiment lies in, two pre-bending parts 111, 121 are contained in two protection pieces 2a, 2b respectively. Therefore, the pre-bending part 111, 121 of two different positions can be properly protected.

[0044] The utility model has been disclosed in the foregoing with preferred embodiment, however, those skilled in the art should understand that, the embodiment is only used to depict the utility model, and should not be interpreted as limiting the scope of the utility model. It should be noted that, all changes and substitutions equivalent to the embodiment should be set to cover in the scope of the utility model. Therefore, the protection scope of the utility model should be accurate with the content range defined in the claims.

Claims

1. A flat cable which overcomes the difference in length between the inner and outer diameters, characterized by, The flat cable to overcome the difference between the inner diameter and the outer diameter includes: a wire body including two overlapped flat cables, wherein at least one of the flat cables is provided with a pre-bent portion protruding from a plane of the flat cable; and a protection member sleeved on a portion of the two overlapped flat cables and accommodating the pre-bent portion, the protection member having an opening to allow the pre-bent portion to pass through the opening after being stretched.

2. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 1, wherein, The pre-bent portion has a plurality of undulations.

3. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 1, wherein, The pre-bent portion has elasticity to allow the pre-bent portion to retreat from outside the opening back into the protection member and protrude from the plane of the flat cable.

4. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 1, wherein The two overlapped flat cables each have the pre-bent portion, and at least one of the pre-bent portions is accommodated in the protection member.

5. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 4, wherein The two pre-bent portions protrude in opposite directions, respectively.

6. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 4, wherein The two pre-bent portions are accommodated in the same protection member.

7. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 4, wherein The two pre-bent portions are located at two ends of the wire body, respectively.

8. The flat cable to overcome the difference in length between the inner and outer diameters according to claim 4, wherein The two pre-bent portions are accommodated in two protection members, respectively.

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