Flexible circuit board convenient to fit and plug

Abstract

The utility model discloses a flexible circuit board convenient to fit and plug, which comprises a flexible board body, the flexible board body comprises a lower polyester film, an electric heating copper film and an upper polyester film which are sequentially laminated and fixed, and the upper surface and the lower surface of the electric heating copper film are respectively and correspondingly adhered and fixed with the upper polyester film and the lower polyester film through an adhesive layer. A bonding layer is arranged on the lower surface of the lower polyester film in a stacked mode, the socket is electrically connected with the electric heating copper film through an electric lead, and the connecting position of the electric lead and the electric heating copper film is covered with insulation fixing glue. The socket comprises a hollow socket body, a plug hole formed in the hollow socket body, a plug piece fixed in the plug hole, a sliding groove formed in the inner wall of the lower end of the plug hole, a U-shaped seat arranged at the top of the hollow socket body, and a clamping hole formed between the U-shaped seat and the hollow socket body; the electric connector can be freely bent to be quickly attached to the surface of a product, and can be quickly and conveniently electrically connected with a plug of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a flexible circuit board which is convenient for lamination and plugging. Background Art

[0002] Flexible circuit board is also called flexible circuit board. It is a kind of printed circuit board with high reliability and excellent flexibility made of polyimide or polyester film as the base material. It is called soft board or FPC for short. It has the characteristics of high wiring density, light weight, thin thickness and free bending.

[0003] In order to be suitable for heating curved, arc-shaped or cylindrical electrical appliances, flexible circuit boards can be used. Existing heating plates have some or all of the following deficiencies: they cannot be bent, are thick and bulky, are inconvenient to connect and disconnect with control boards or power supplies, are inconvenient to fit and fix the circuit boards, cannot adapt to the surface shape of the product, and the conductive wires are easily loosened from the circuit boards. Utility Model Content

[0004] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides a flexible circuit board that is easy to fit and plug in. It can be bent freely and quickly fit with the surface of the product, and can also be quickly electrically connected to the plug of the product, making it convenient to plug in and out.

[0005] A flexible circuit board that is easy to fit and plug in, includes a flexible board body, the flexible board body includes a lower polyester film, an electric heating copper film, and an upper polyester film that are stacked and fixed in sequence, the upper surface and the lower surface of the electric heating copper film are respectively bonded and fixed to the upper polyester film and the lower polyester film by an adhesive layer, an adhesive layer is stacked on the lower surface of the lower polyester film, and the lower surface of the adhesive layer is covered with a release paper layer, and also includes a plug socket, the plug socket is electrically connected to the electric heating copper film through a conductive wire, and the connection between the conductive wire and the electric heating copper film is covered with an insulating fixing glue, the plug socket includes a hollow seat body, a plug hole provided in the hollow seat body, a plug sheet fixed in the plug hole, a sliding groove provided on the inner wall of the lower end of the plug hole, a U-shaped seat provided on the top of the hollow seat body, and a clamping hole formed between the U-shaped seat and the hollow seat body, one end of the plug sheet is fastened to the conductive wire, and the other end can be used to be inserted into the slot in the plug, and the sliding groove and the U-shaped seat are arranged opposite to each other.

[0006] In some embodiments, a heat shrink tube is sleeved around the outer periphery of the conductive wire between the plug socket and the electric heating copper film.

[0007] In some embodiments, the flexible board includes a circular board and a rectangular board electrically connected to the circular board. At least two positioning grooves are provided on the outer wall of the circular board, and a positioning hole is provided in the middle of the circular board.

[0008] In some embodiments, the electric heating copper film is a flat, long strip-shaped sheet, and the electric heating copper film is evenly and regularly distributed along the flexible board. The two ends of the electric heating copper film are electrically connected to two conductive wires fixed in the socket.

[0009] In some embodiments, the hollow seat is T-shaped, the sliding groove is U-shaped, and the adhesive layer, the adhesive layer and the insulating fixing adhesive are all one of polyimide adhesive, silicone adhesive or phenolic resin adhesive.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 It is a top view structural schematic diagram of the present application;

[0013] Figure 2 It is a side structural schematic diagram of the present application;

[0014] Figure 3 It is a side cross-sectional structural schematic diagram of the power socket of the present application;

[0015] Figure 4 It is a front structural schematic diagram of the power socket of the present application;

[0016] Figure 5 It is a schematic diagram of the top view of the power socket of the present application;

[0017] Figure 6 It is a schematic diagram of the side structure of the plug.

[0018] Reference numerals:

[0019] Flexible plate body 1, circular plate body 100, rectangular plate body 101, positioning slot 102, positioning hole 103;

[0020] Lower polyester film 2, electric heating copper film 3, upper polyester film 4, adhesive layer 5, pasting layer 6, release paper layer 7;

[0021] Plug socket 8, hollow socket body 800, plug hole 801, plug sheet 802, slide slot 803,

[0022] U-shaped seat 804, snap-in hole 805;

[0023] Plug 9, rectangular convex plate 900, clamping plate 901, clamping block 902;

[0024] Conductive wire 10 , insulating fixing glue 11 , heat shrink tube 12 . DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Reference Figure 1-Figure 6A flexible circuit board that is easy to fit and plug in, including a flexible board body 1, the flexible board body 1 includes a lower polyester film 2, an electric heating copper film 3, and an upper polyester film 4 that are stacked and fixed in sequence, the upper surface and the lower surface of the electric heating copper film 3 are respectively bonded and fixed to the upper polyester film 4 and the lower polyester film 2 through an adhesive layer 5, the electric heating copper film 3 can generate heat when powered on, and can be used as a heating component of an electric heater, an adhesive layer 6 is stacked on the lower surface of the lower polyester film 2 for quickly fitting on the surface of a product, and a release paper layer 7 is covered on the lower surface of the adhesive layer 6, which can be easily torn off when used, and also includes a plug socket 8 for quickly plugging in a matching plug 9 on an electrical appliance or circuit to power on, and the plug socket 8 is electrically connected to the electric heating copper film 3 through a conductive wire 10 Connection, the connection between the conductive wire 10 and the electric heating copper film 3 is covered with an insulating fixing glue 11 to prevent the connection from loosening or breaking, and to ensure the stability of the connection. The plug socket 8 includes an insulating hollow seat body 800, a plug hole 801 centrally opened in the hollow seat body 800, a plug piece 802 fixed in the plug hole 801, a sliding groove 803 opened on the inner wall of the lower end of the plug hole 801, a U-shaped seat 804 arranged at the top of the hollow seat body 800, and a snap-in hole 805 formed between the U-shaped seat 804 and the hollow seat body 800. One end of the plug piece 802 is fastened to the conductive wire 10, and the other end can be used to be inserted into the slot in the plug 9. The sliding groove 803 and the U-shaped seat 804 are arranged opposite to each other, one at the bottom and the other just above.

[0030] When in use, tear off the release paper layer 7 on the bottom surface of the flexible board body 1, and then stick the flexible board body 1 to the bonding surface of the electrical appliance through the adhesive layer 6. The flexible board body 1 can be bent freely so as to better adapt to the shape of the bonding surface of the electrical appliance. Then, the socket 8 of the flexible circuit board is plugged into the plug 9 of the electrical appliance to power on. At this time, the electric heating copper film 3 generates heat. The socket 8 and the plug 9 are provided with corresponding connection structures. When the socket 8 and the plug 9 of the electrical appliance are plugged and fixed, the plug 9 is first aligned with the plug hole 801 in the hollow socket body 800, and the rectangular convex plate 900 at the bottom of the plug 9 is aligned with the sliding groove 803 on the socket 8. The clamping plate 901 on the plug 9 is aligned with the U-shaped seat 804 on the socket 8, and force is applied to the rear end of the plug 9 to make it enter the socket 8. The clamping plate 901 is a plate body with elasticity and inclined to the horizontal plane. Finally, the right-angled triangle block 902 on the clamping plate 901 will be embedded in the clamping hole 805 on the socket 8, so that the plug 9 and the socket 8 are fixed to prevent loosening. When separating, first press the clamping block 902 on the clamping plate 901 to make it withdraw from the clamping hole 805, and then pull out the plug 9 or the socket 8. The present invention can be bent freely and quickly fit with the surface of the product, and can also be quickly electrically connected with the plug 9 of the product, so that plugging and detaching are relatively convenient.

[0031] In some embodiments, a heat shrink tube 12 is sleeved around the conductive wire 10 between the plug socket 8 and the electric heating copper film 3 to prevent two or more conductive wires 10 from loosening, while protecting the conductive wire 10 and improving insulation and wear resistance.

[0032] In some embodiments, the flexible board body 1 includes a circular board body 100 and a rectangular board body 101 electrically connected to the circular board body 100. The structures of the two are basically the same. Three positioning slots 102 are evenly arranged on the outer wall of the circular board body 100, and a positioning hole 103 is opened in the middle of the circular board body 100. When the product is a cylinder, the circular board body 100 can be pasted on the top or bottom of the product, and the rectangular board body 101 can be pasted around the circular outer wall of the product, so that the flexible board body 1 fits the product more closely and improves the thermal conductivity. The positioning slots 102 can be screwed in and fixed, further improving the firmness of the connection.

[0033] In some embodiments, the electric heating copper film 3 is a flat, long sheet. The electric heating copper film 3 is evenly and regularly distributed along the shape of the flexible board 1 to make the heat generation more uniform. The two ends of the electric heating copper film 3 are electrically connected to the two conductive wires 10 fixed in the socket 8, and can generate heat after power is turned on.

[0034] In some embodiments, the hollow seat body 800 is T-shaped, the sliding groove 803 is U-shaped, and the adhesive layer 5, the adhesive layer 6 and the insulating fixing adhesive 11 can be one of polyimide adhesive, silicone adhesive or phenolic resin adhesive, or other suitable adhesive materials.

[0035] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the utility model have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. A flexible circuit board that is easy to fit and plug in, comprising a flexible board body, the flexible board body comprising a lower polyester film, an electric heating copper film, and an upper polyester film that are stacked and fixed in sequence, the upper surface and the lower surface of the electric heating copper film are respectively bonded and fixed to the upper polyester film and the lower polyester film through an adhesive layer, wherein: An adhesive layer is stacked on the lower surface of the lower polyester film, and a release paper layer is covered on the lower surface of the adhesive layer. It also includes a plug socket, which is electrically connected to the electric heating copper film through a conductive wire, and the connection between the conductive wire and the electric heating copper film is covered with an insulating fixing glue. The plug socket includes a hollow seat body, a plug hole opened in the hollow seat body, a plug sheet fixed in the plug hole, a sliding groove opened on the inner wall of the lower end of the plug hole, a U-shaped seat arranged on the top of the hollow seat body, and a clamping hole formed between the U-shaped seat and the hollow seat body. One end of the plug sheet is fastened to the conductive wire, and the other end can be used to be inserted into the slot in the plug, and the sliding groove and the U-shaped seat are arranged opposite to each other.

2. The flexible circuit board that is easy to fit and plug as claimed in claim 1 is characterized in that: A heat shrink tube is sleeved on the outer periphery of the conductive wire between the plug socket and the electric heating copper film.

3. The flexible circuit board that is easy to fit and plug as claimed in claim 1 or 2, characterized in that: The flexible board body comprises a circular board body and a rectangular board body electrically connected to the circular board body. At least two positioning grooves are arranged on the outer wall of the circular board body, and a positioning hole is opened in the middle of the circular board body.

4. The flexible circuit board that is easy to fit and plug as claimed in claim 3 is characterized by: The electric heating copper film is a flat long strip sheet, and is evenly and regularly distributed along the flexible board. Two ends of the electric heating copper film are electrically connected to two conductive wires fixed in the socket.

5. The flexible circuit board that is easy to fit and plug as claimed in claim 4 is characterized by: The hollow seat body is T-shaped, the sliding groove is U-shaped, and the adhesive layer, the sticking layer and the insulating fixing adhesive are all one of polyimide adhesive, silicone adhesive or phenolic resin adhesive.

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