Flexible heating plate convenient to insert and capable of improving heat-conducting property

Abstract

The utility model discloses a flexible heating plate convenient to plug and capable of improving heat-conducting property, which comprises an electric heating element layer, polyimide films are correspondingly bonded on the upper surface and the lower surface of the electric heating element layer through high-temperature-resistant glue, and a metal heat-conducting sheet is bonded on the outer surface of at least one polyimide film through heat-conducting glue. The two ends of the electric heating element layer are electrically connected with an electric plug, the electric plug comprises an insulating shell and a conductive terminal installed in the insulating shell, the first end of the conductive terminal is electrically connected with the electric heating element layer, and the second end of the conductive terminal is provided with a plugging groove; a guide plate is arranged at the front end of the bottom of the insulating shell, receding grooves are formed in the positions, on the two sides of the guide plate, of the bottom of the insulating shell, an inserting piece is arranged at the rear end of the top of the insulating shell and extends from the rear end of the top of the insulating shell to the front end, and a clamping table is arranged at the top of the front end of the inserting piece. The utility model has the advantages of free bending, small thickness and volume, good thermal conductivity, and fast and convenient plugging and separation.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a flexible heating plate which is convenient for plugging and can improve thermal conductivity. Background Art

[0002] Flexible circuit board 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, and has the characteristics of high wiring density, light weight, thin thickness, and free bending.

[0003] In order to heat electrical appliances with curved, arc-shaped or cylindrical surfaces, flexible heating plates can be used. Existing heating plates cannot be bent, are thick and bulky, have low thermal conductivity, are inconvenient to connect and disconnect with control boards or power supplies, and have insufficient wear resistance and insulation properties of wires. 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 heating plate which is easy to plug in and can improve thermal conductivity. The flexible heating plate can be bent freely, has a small thickness and volume, can reduce the overall weight of the product, has good thermal conductivity, and is quick and convenient to plug in.

[0005] A flexible heating plate which is easy to plug and can improve thermal conductivity comprises an electric heating element layer, polyimide films are respectively bonded to the upper surface and the lower surface of the electric heating element layer by high temperature resistant adhesive, a metal heat conducting sheet is bonded to the outer surface of at least one polyimide film by heat conducting adhesive, an electric plug is electrically connected to the two ends of the electric heating element layer, the electric plug comprises an insulating shell, a conductive terminal installed in the insulating shell, a first end of the conductive terminal is electrically connected to the electric heating element layer, and a plug slot is arranged at the second end of the conductive terminal; a guide plate is arranged at the front end of the bottom of the insulating shell, air avoidance grooves are arranged at the bottom of the insulating shell on both sides of the guide plate, a plug-in sheet is arranged at the top rear end of the insulating shell, the plug-in sheet extends from the top rear end of the insulating shell to the front end, the angle between the plug-in sheet and the top of the insulating shell is an acute angle, a clamping platform is arranged at the top of the front end of the plug-in sheet, a guide inclined surface is arranged at the front end of the clamping platform, and a pressing plate is connected between the top of the plug-in sheet and the top rear end of the insulating shell.

[0006] In some embodiments, the high temperature resistant adhesive is a polyimide adhesive, a silicone adhesive or a phenolic resin adhesive, and the electric heating elements in the electric heating element layer are flat electric heating wires, electric heating belts or electric heating films.

[0007] In some embodiments, the thermally conductive adhesive is thermally conductive silicone grease or thermally conductive gel, and the metal thermally conductive sheet is a copper sheet or an aluminum sheet.

[0008] In some embodiments, an anti-slip component is provided on the top of the pressing plate, and a heat shrink tube is sleeved on the periphery of the wire between the electric plug and the electric heating element.

[0009] 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

[0010] 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:

[0011] Figure 1 It is a top view structural schematic diagram of the present application;

[0012] Figure 2 yes Figure 1 A right view structural diagram of ;

[0013] Figure 3 A schematic diagram of the top view of the electric plug of the present application;

[0014] Figure 4 yes Figure 3 A right view structural diagram of ;

[0015] Figure 5 yes Figure 3 Rear view of the structure

[0016] Reference numerals:

[0017] Heating element layer 1, high temperature resistant glue 2, polyimide film 3, heat conductive glue 4, metal heat conductive sheet 5, electric plug 6, insulating shell 600, conductive terminal 601, plug slot 602, guide plate 603, plug sheet 604, clamping platform 605, guide slope 6050, pressing plate 606, anti-slip component 6060, air avoidance groove 607;

[0018] Wire 7, heat shrink tube 8. DETAILED DESCRIPTION

[0019] 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.

[0020] 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 "up", "down", "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.

[0021] 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.

[0022] 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.

[0023] Reference Figure 1-Figure 5A flexible heating plate that is easy to plug in and can improve thermal conductivity. The thickness of the flexible heating plate can be less than 0.03 mm. It includes an electric heating element layer 1. A polyimide film 3 is bonded to the upper surface and the lower surface of the electric heating element layer 1 respectively through a high-temperature resistant adhesive 2. A metal heat-conducting sheet 5 is bonded to the outer surface of the polyimide film 3 located at the bottom through a high-temperature resistant heat-conducting adhesive 4. The metal heat-conducting sheet 5 can be a thin sheet with a thickness of less than 0.01 mm and can be bent to improve the speed of thermal conductivity or heat dissipation. An electric plug 6 is electrically connected at both ends of the electric heating element layer 1 for quick connection with a control board or power supply. The electric plug 6 includes an insulating shell 600 integrally formed of insulating plastic and a conductive terminal 601 installed in the insulating shell 600. The first end of the conductive terminal 601 is electrically connected to the electric heating element layer 1, and the second end of the conductive terminal 601 is provided with a plug-in slot 602 for easy plugging of the control board or power supply. The piece is quickly inserted and powered on; a rectangular guide plate 603 is provided at the front end of the bottom of the insulating shell 600, and rectangular avoidance grooves 607 are provided at the bottom of the insulating shell 600 on both sides of the guide plate 603 to avoid blocking the straight forward or backward movement of the guide plate 603. The guide plate 603 is higher than the height of the avoidance groove 607, and an elastic plug-in piece 604 is provided at the rear end of the top of the insulating shell 600. The plug-in piece 604 extends upward from the rear end of the top of the insulating shell 600 to the front end, and the angle between the plug-in piece 604 and the top of the insulating shell 600 is an acute angle of 3 to 15 degrees. A clamping platform 605 is provided at the top of the front end of the plug-in piece 604. The clamping platform 605 can be a right triangle or a right trapezoid. A guiding slope 6050 is provided at the front end of the clamping platform 605, and an L-shaped pressing plate 606 is connected between the top of the plug-in piece 604 and the rear end of the top of the insulating shell 600.

[0024] When in use, the flexible heating plate can be bent along the shape of the attachment surface of the electrical appliance, and then fixed to the attachment surface of the electrical appliance by glue or screws. The metal thermal conductive sheet 5 is used to improve the heat conduction or heat dissipation speed. The flexible heating plate can be quickly connected and separated from the control board or power supply through the electrical plug 6. When the electric plug 6 is to be connected with the second plug located on the control board or power supply, the insulating housing 600 of the electric plug 6 is first aligned with the insulating housing 600 of the second plug, and the guide plate 603 of the electric plug 6 is aligned with the guide groove on the second plug. When the guide plate 603 moves straightly along the guide groove under external force, the plug piece 604 and the clamping platform 605 will automatically move downward when being squeezed, and the plug piece 604 on the second plug will enter the plug groove 602 of the conductive terminal 601 in the electric plug 6 and make close contact. In addition, the plug piece 604 will enter the socket at the upper end of the second plug, and finally the clamping platform 605 will slide into the slot above the socket at the upper end of the second plug under the guidance of the guide slope 6050, and the clamping platform 605 will be limited and fixed under the elastic force of the plug piece 604. The electric plug 6 can be called a male plug, and the second plug can be called a female plug, and the two structures are matched. When the electric plug 6 is to be separated from the second plug, the pressing plate 606 on the electric plug 6 is pressed downward, the plug-in piece 604 and the clamping platform 605 are moved downward synchronously, the clamping platform 605 is separated from the slot above the plug hole at the upper end of the second plug, and then the electric plug 6 is pulled back. The flexible heating plate of the present application can be bent freely, has a small thickness and volume, can reduce the overall weight of the product, has good thermal conductivity, and is quick and convenient to plug in and out.

[0025] In some embodiments, the high temperature resistant adhesive 2 is a polyimide adhesive, a silicone adhesive or a phenolic resin adhesive, which has good adhesion and can withstand high temperatures. High temperature resistance in this application refers to being able to withstand temperatures above 150°C. The electric heating element in the electric heating element layer 1 is a flat electric heating wire, electric heating belt or electric heating film, which has a simple structure and is easy to manufacture.

[0026] In some embodiments, the thermally conductive adhesive 4 is thermally conductive silicone grease or thermally conductive gel. Thermally conductive silicone grease is commonly known as heat dissipation paste. Thermally conductive silicone grease uses organic silicone as the main raw material and adds heat-resistant and thermally conductive materials to form a thermally conductive silicone grease-like composite. Thermally conductive gel is a two-component preformed thermally conductive silicone product. This material has the advantages of both thermally conductive gaskets and thermally conductive silicone grease, and has high thermal conductivity, low contact thermal resistance, and good electrical insulation. The metal thermal conductive sheet 5 is a copper sheet or an aluminum sheet, which has good thermal conductivity.

[0027] In some embodiments, an anti-slip component 6060 is provided on the top of the pressing plate 606, which can be a protrusion, a protrusion or a concave hole, etc. A heat shrink tube 8 is sleeved on the outer periphery of the wire 7 between the electric plug 6 and the electric heating element, which can protect the outer wall of the wire 7 and improve the insulation and wear resistance.

[0028] 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 heating plate which is easy to plug and can improve thermal conductivity, comprising an electric heating element layer, on the upper surface and the lower surface of the electric heating element layer are respectively bonded with a polyimide film by a high temperature resistant adhesive, wherein: The outer surface of at least one polyimide film is bonded with a metal heat-conducting sheet by heat-conducting adhesive, and an electric plug is electrically connected at both ends of the electric heating element layer. The electric plug includes an insulating shell and a conductive terminal installed in the insulating shell. The first end of the conductive terminal is electrically connected to the electric heating element layer, and the second end of the conductive terminal is provided with a plug-in slot; a guide plate is provided at the bottom front end of the insulating shell, and air-avoiding grooves are provided at the bottom of the insulating shell on both sides of the guide plate. A plug-in sheet is provided at the top rear end of the insulating shell, and the plug-in sheet extends from the top rear end of the insulating shell to the front end. The angle between the plug-in sheet and the top of the insulating shell is an acute angle. A clamping platform is provided at the front end of the clamping platform, and a guiding inclined surface is provided at the front end of the clamping platform. A pressing plate is connected between the top of the plug-in sheet and the top rear end of the insulating shell.

2. The flexible heating plate with convenient plugging and improved thermal conductivity as claimed in claim 1 is characterized by: The high temperature resistant adhesive is polyimide adhesive, silicone adhesive or phenolic resin adhesive, and the electric heating elements in the electric heating element layer are flat electric heating wires, electric heating belts or electric heating films.

3. The flexible heating plate with convenient plugging and improved thermal conductivity as claimed in claim 2 is characterized by: The thermal conductive adhesive is thermal conductive silicone grease or thermal conductive gel, and the metal thermal conductive sheet is a copper sheet or an aluminum sheet.

4. The flexible heating plate with convenient plugging and improved thermal conductivity as claimed in claim 2 or 3, characterized in that: An anti-slip component is arranged on the top of the pressing plate, and a heat shrink tube is sleeved on the periphery of the wire between the electric plug and the electric heating element.

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