Local short-circuit flexible flat cable
By laser-etching a laser-etched area onto the hot melt adhesive film of a flexible flat cable and coating it with conductive silver paste, the problem of conductor continuity and grounding was solved, achieving local grounding functionality, simplifying the production process and reducing costs.
Patent Information
- Application Number
- CN202520108521.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing flexible flat cables face difficulties in grounding partial conductor connections, leading to high production costs and low efficiency.
Laser-etched areas are created on the hot melt adhesive film of the flexible flat cable, and conductive silver paste is applied to achieve local short circuits of the conductors. The conductors are connected through the laser-etched areas and conductive silver paste to form a local grounding structure.
It enables the local grounding function of the conductor, simplifies the production process, improves production efficiency, and reduces costs.
Smart Images
Figure CN223857898U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to flexible flat cable technical field especially relates to a partial short circuit flexible flat cable. BACKGROUND
[0002] Flexible flat cable is widely used in consumer electronics, automobile, security and other fields, and the application terminal product types are various, which is usually composed of flat conductor, hot melt adhesive film and shielding material, wherein the flat conductor is multiple, and each conductor is not connected, which also leads to certain limitation. In the actual use of flexible flat cable, due to the design requirements of the mechanism and terminal, and the gradual expansion of design of cable manufacturing enterprises to meet the market demand of multifunction, it is often required that part of the conductor in the flexible flat cable is connected to ground, and the existing conventional flexible flat cable structure is difficult to realize through simple process improvement, which causes great trouble in cost and efficiency smoothing in research and development and production.
[0003] Therefore, in combination with the above-mentioned technical problems, it is necessary to provide a new technical scheme. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a flexible flat cable with local short circuit grounding capability and simplified processing technology.
[0005] To solve the above technical problems, the utility model provides a partial short circuit flexible flat cable, and the specific technical scheme is as follows:
[0006] A partial short circuit flexible flat cable comprises a plurality of parallel and spaced conductors, hot melt adhesive film is laid on the front and rear sides of the conductors, the length of the hot melt adhesive film on the front side of the conductor is less than the length of the conductor, and the two ends of the conductor are exposed outside the hot melt adhesive film on the front side of the conductor, and the length of the hot melt adhesive film on the rear side of the conductor is adapted to the conductor to completely cover the conductor; a plurality of laser areas are hollowed out on the hot melt adhesive film on the front side of the conductor, each laser area is adapted to and only to one to-be-short-circuited conductor to expose the to-be-short-circuited conductor from below the hot melt adhesive film, and conductive silver paste is coated outside the hot melt adhesive film on the front side of the conductor, the conductive silver paste covers each laser area in a sheet shape and is adhered to the conductor in the laser area.
[0007] Preferably, the laser area is close to the end of the conductor, the length of the laser area is 4-6mm, the size of the conductor exposed outside the hot melt adhesive film is not more than 5mm, and the distance from one end of the laser area close to the end of the conductor to the end of the conductor is not less than 6mm.
[0008] Preferably, the distance from one side of the conductive silver paste close to the end of the conductor to the end of the conductor is not less than 5mm, and the model of the conductive silver paste is AS6089.
[0009] Preferably, the distance between the edge of the conductive silver paste close to the conductor end and the end of the hot melt adhesive film on the front side of the conductor is 1mm, with a tolerance range of ±0.5mm.
[0010] Preferably, a shielding layer is further fixedly arranged on the side of the hot melt adhesive film on the front side of the conductor away from the conductor, and the size of the shielding layer is smaller than the size of the hot melt adhesive film on the front side of the conductor.
[0011] Preferably, at least two reinforcing plates are fixedly connected to the side of the hot melt adhesive film on the back side of the conductor away from the conductor, and the two reinforcing plates are respectively adapted to the two ends of the conductor.
[0012] The partial short-circuit flexible flat cable has the following beneficial effects:
[0013] The partial short-circuit flexible flat cable of the utility model has the following beneficial effects:
[0014] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0016] Figure 1 It is a front view of a partial short-circuit flexible flat cable.
[0017] Figure 2 It is a front view of a partial short-circuit flexible flat cable. Figure 1 It is a side view of a partial short-circuit flexible flat cable.
[0018] Figure 3 It is a front view of a partial short-circuit flexible flat cable. Figure 1 It is a rear view of a partial short-circuit flexible flat cable.
[0019] Figure 4 It is a front view of a partial short-circuit flexible flat cable. Figure 1 It is an enlarged schematic view of the laser area of the end of the partial short-circuit flexible flat cable.
[0020] 1-conductor; 2-hot melt adhesive film; 21-conductive silver paste; 22-laser area; 3-shielding layer; 4-reinforcing plate. DETAILED DESCRIPTION
[0021] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. EMBODIMENT
[0022] Please refer to Figures 1 to 4 A local short-circuit flexible flat cable comprises a plurality of parallel and spaced conductors 1, hot melt adhesive films 2 are arranged on the front and rear sides of the conductors, the length of the hot melt adhesive film on the front side of the conductor is less than the length of the conductor and the two ends of the conductor are exposed outside the hot melt adhesive film on the front side of the conductor, and the length of the hot melt adhesive film on the rear side of the conductor is adapted to the conductor to completely cover the conductor; a plurality of laser areas 22 are hollowed out on the hot melt adhesive film on the front side of the conductor, each laser area is adapted to and only to one conductor to be short-circuited to expose the conductor to be short-circuited from below the hot melt adhesive film, and a conductive silver paste 21 is coated outside the hot melt adhesive film on the front side of the conductor, the conductive silver paste covers each laser area in a sheet shape and is adhered to the conductor in the laser area.
[0023] The laser area 22 is close to the end of the conductor 1, the length of the laser area is 4-6 mm, the size of the conductor exposed outside the hot melt adhesive film is not more than 5 mm, and the distance from one end of the laser area close to the end of the conductor to the end of the conductor is not less than 6 mm.
[0024] The distance from one side of the conductive silver paste 21 close to the end of the conductor to the end of the conductor is not less than 5 mm, and the model of the conductive silver paste is AS6089.
[0025] The distance from one side of the conductive silver paste 21 close to the end of the conductor to the end of the hot melt adhesive film on the front side of the conductor closest to the side of the conductive silver paste is 1 mm, and the tolerance range is ±0.5 mm.
[0026] The hot melt adhesive film 2 on the front side of the conductor 1 is further fixedly provided with a shielding layer 3 on the side away from the conductor, and the size of the shielding layer is less than the size of the hot melt adhesive film on the front side of the conductor.
[0027] The hot melt adhesive film 2 on the rear side of the conductor 1 is fixedly connected with at least two reinforcing plates 4 on the side away from the conductor, and the two reinforcing plates are respectively adapted to the two ends of the conductor to improve the structural strength of the two ends of the cable.
[0028] The local short circuit flexible flat cable of the embodiment is laser-radiated by a laser machine in production, and a window is opened on the hot melt adhesive film to expose the conductor; in order to ensure connectivity, the laser must penetrate the hot melt adhesive film; after the laser is finished, the laser area is cleaned, and a cotton swab is used to dip conductive silver paste for brushing, and the conductive silver paste is ensured to penetrate the laser window and contact the conductor to ensure the stability of the connection; after the above process is completed, the shielding material is pasted.
[0029] The beneficial effects of the utility model are: the laser area is hollowed out on the hot melt adhesive film to form windows separated from each other, and the conductors in each window are connected by conductive silver paste, so that part of the foot position is connected, and the function of local grounding is realized; this structure simplifies the production process of the flexible flat cable with the short circuit grounding characteristic, effectively improves the production efficiency of special types of cables, and reduces the production cost.
[0030] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify and modify the above-mentioned embodiments within the scope of the utility model.
Claims
1. A locally shorted flexible flat cable, characterized by: The application relates to a conductor (1) comprising a plurality of parallel and spaced conductors, hot melt adhesive films (2) being arranged on the front and back sides of the conductors, the length of the hot melt adhesive film on the front side of the conductor is smaller than the length of the conductor, and the two ends of the conductor are exposed outside the hot melt adhesive film on the front side of the conductor, the length of the hot melt adhesive film on the back side of the conductor is adapted to the conductor to completely cover the conductor; a plurality of laser areas (22) are hollowed out on the hot melt adhesive film on the front side of the conductor, each laser area is adapted to and only to one conductor to be short-circuited to expose the conductor to be short-circuited from below the hot melt adhesive film, conductive silver paste (21) is coated outside the hot melt adhesive film on the front side of the conductor, the conductive silver paste is in the form of a sheet to cover each laser area and is adhered to the conductor in the laser area.
2. The local short flexible flat cable according to claim 1, characterized in that: The laser area (22) is close to the end of the conductor (1), the length of the laser area is 4-6 mm, the size of the conductor exposed outside the hot melt adhesive film is not more than 5 mm, and the distance from one end of the laser area close to the end of the conductor to the end of the conductor is not less than 6 mm.
3. The local short flexible flat cable according to claim 2, characterized in that: The distance from one side of the conductive silver paste (21) close to the end of the conductor to the end of the conductor is not less than 5 mm, and the model of the conductive silver paste is AS6089.
4. The local short flexible flat cable according to claim 3, characterized in that: The distance from one side of the conductive silver paste (21) close to the end of the conductor to the end of the hot melt adhesive film on the front side of the conductor closest to the side of the conductive silver paste is 1 mm, and the tolerance range is + / -0.5 mm.
5. The local short flexible flat cable of claim 1, wherein: The hot melt adhesive film (2) on the front side of the conductor (1) is further provided with a shielding layer (3) fixedly arranged on the side away from the conductor, and the size of the shielding layer is smaller than that of the hot melt adhesive film on the front side of the conductor.
6. The local short flexible flat cable of claim 1, wherein: The hot melt adhesive film (2) on the back side of the conductor (1) is further provided with at least two reinforcing plates (4) fixedly connected on the side away from the conductor, and the two reinforcing plates are respectively adapted to the two ends of the conductor.