PCB convenient to fix

Abstract

The utility model relates to the technical field of PCB circuit boards, in particular to a PCB circuit board convenient to fix, which comprises two parts of PCB circuit board main bodies, a connecting piece is fixedly connected between the two parts of PCB circuit board main bodies, a plurality of electronic elements are fixedly connected at the top of the PCB circuit board main bodies, structural adhesive layers are fixedly connected at the bottoms of the PCB circuit board main bodies, and the structural adhesive layers are fixedly connected at the bottom of the PCB circuit board main bodies. A PET release film is arranged below the structural adhesive layer, and the end part of the PET release film is fixedly connected with a pull ring. Compared with the prior art, the utility model has the advantages that the PET release films cover the structural adhesive layer, and after the PCB is attached to the mounting surface and the angle is adjusted to be right, the pull rings on the PET release films on the two sides are respectively pulled, so that the PET release films are separated from the structural adhesive layer, and the structural adhesive layer can be directly contacted with the mounting surface to complete fixed adhesion; the PET release film can be separated from the PCB main body by further pulling the pull ring. Compared with a mode of gluing first and then pasting, the fixing mode can avoid the situation that the adjustment is inconvenient due to deviation after pasting.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit boards, in particular to a PCB circuit board which is convenient to fix. Background Art

[0002] A PCB circuit board is an important electronic component, a support for electronic components, and also a carrier for electrical connection of electronic components. The PCB circuit board enables electronic components to work together through providing electrical connection, so as to realize various functions of electronic devices. When installing a PCB circuit board, in order to improve its stability, it is necessary to apply structural adhesive on the installation surface to make the installation of the PCB circuit board more stable. However, during the process of pasting the PCB circuit board and the installation surface, it is easy to produce deviation and is not easy to adjust, which affects the installation and fixing accuracy. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a PCB circuit board which is convenient to fix, effectively solving the deficiencies of the prior art.

[0004] The purpose of the utility model is realized by the following technical solutions: A PCB circuit board which is convenient to fix, including two parts of a PCB circuit board main body, a connecting piece is fixedly connected between the two parts of the PCB circuit board main body, a plurality of electronic components are fixedly connected to the top of the PCB circuit board main body, a structural adhesive layer is fixedly connected to the bottom of the PCB circuit board main body, a PET release film is arranged below the structural adhesive layer, and a pull ring is fixedly connected to the end of the PET release film.

[0005] Optionally, the structural adhesive layer covers the bottom of the PCB circuit board main body, one ends of the two PET release films are respectively fixedly connected to both sides of the bottom of the PCB circuit board main body, the PET release film is double-folded below the structural adhesive layer, slots are opened on both sides of the PCB circuit board main body, the length of the slot is adapted to the width of the PET release film, and one end of the PET release film passes through the slot.

[0006] By adopting the above technical solutions: By respectively arranging a structural adhesive layer and a PET release film on both sides of the bottom of the PCB circuit board main body, before installing the PCB circuit board, the PET release film covers the structural adhesive layer. When the PCB circuit board is pasted with the installation surface and the angle is adjusted correctly, the pull rings on the PET release films on both sides are respectively pulled, so that the PET release film is separated from the structural adhesive layer, and then the structural adhesive layer can be directly in contact with the installation surface to complete the fixed pasting. Further pulling the pull ring can make the PET release film separated from the PCB circuit board main body. This fixing method can avoid the situation that it is inconvenient to adjust after pasting compared with the method of first applying adhesive and then pasting, and the pasting and fixing are more convenient and fast.

[0007] Optionally, the width of the PET release film matches the width of the structural adhesive layer, and the length of the PET release film is greater than twice the length of the structural adhesive layer.

[0008] The above technical solution is adopted: by limiting the length and width of the PET release film, the structural adhesive layer can be completely covered when the double layer is folded, so as to avoid the structural adhesive layer being exposed before fixing to affect the viscosity.

[0009] Optionally, a rounded corner is provided on the inner side of the groove bottom, and the friction coefficient between the groove bottom and the PET release film is less than 0.5.

[0010] The above technical solution is adopted: by rounding and polishing the bottom of the groove, the resistance encountered by the PET release film when being pulled is reduced, thereby avoiding the situation that the PET release film breaks during the pulling process.

[0011] Optionally, the connecting piece is made of alloy spring steel, and the PCB circuit board bodies on both sides of the connecting piece are parallel to each other in a normal state.

[0012] The above technical solution is adopted: by setting a connecting piece made of alloy spring steel in the middle of the PCB circuit board body, when pulling the PET release film on one side, press the circuit board on the other side and pry the circuit board on this side open at a certain angle, so as to facilitate the extraction of the PET release film. After extraction, the raised PCB circuit board body is automatically reset under the action of the connecting piece. By repeating the above operation, the PET release films on both sides can be extracted to complete the gluing and fixing of the circuit board.

[0013] Optionally, threaded holes are provided at four corners of the PCB circuit board body, and the PCB circuit board body is further fixedly connected to the mounting surface through the threaded holes and screws.

[0014] The utility model has the following advantages:

[0015] 1. The PCB circuit board which is easy to fix is ​​provided with a structural adhesive layer and a PET release film on both sides of the bottom of the PCB circuit board body respectively. Before the PCB circuit board is installed, the PET release film covers the structural adhesive layer. After the PCB circuit board is attached to the installation surface and the angle is adjusted and corrected, the pull rings on the PET release films on both sides are pulled respectively to separate the PET release film from the structural adhesive layer, so that the structural adhesive layer can be directly contacted with the installation surface to complete the fixed attachment. The pull ring can be further pulled to separate the PET release film from the PCB circuit board body. Compared with the method of applying glue first and then attaching, this fixing method can avoid the situation that the deviation after attachment is inconvenient to adjust, and the attachment and fixing are more convenient and quick.

[0016] 2. The PCB circuit board that is easy to fix limits the length and width of the PET release film so that it can completely cover the structural adhesive layer when double-folded, thereby avoiding exposure of the structural adhesive layer before fixation to affect the viscosity. The bottom of the slot is rounded and polished to reduce the resistance of the PET release film when it is pulled, thereby avoiding the PET release film from breaking during the pulling process.

[0017] 3. The PCB circuit board that is easy to fix has a connecting piece made of alloy spring steel in the middle of the main body of the PCB circuit board. When the PET release film on one side is pulled, the circuit board on the other side is pressed and the circuit board on the side is pried open at a certain angle, so that the PET release film can be easily pulled out. After being pulled out, the warped PCB circuit board main body is automatically reset under the action of the connecting piece. The above operation can be repeated to pull out the PET release films on both sides to complete the pasting and fixing of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure at point C in the middle.

[0023] In the figure: 1-PCB circuit board body, 2-connecting piece, 3-electronic component, 4-structural adhesive layer, 5-PET release film, 6-pull ring, 7-slot, 8-rounded corner, 9-threaded hole. DETAILED DESCRIPTION

[0024] 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] like Figures 1 to 5As shown in the figure, a PCB circuit board that is convenient for fixing includes two parts of the PCB circuit board body 1. There is a connecting piece 2 fixedly connected between the two parts of the PCB circuit board body 1. A number of electronic components 3 are fixedly connected to the top of the PCB circuit board body 1. Structural adhesive layers 4 are fixedly connected to the bottom of the PCB circuit board body 1. A PET release film 5 is provided below the structural adhesive layer 4. A pull ring 6 is fixedly connected to the end of the PET release film 5.

[0026] Embodiment 1: The structural adhesive layer 4 covers the bottom of the PCB circuit board body 1. One ends of two PET release films 5 are respectively fixedly connected to both sides of the bottom of the PCB circuit board body 1. The PET release films 5 are double-folded below the structural adhesive layer 4. Slots 7 are opened on both sides of the PCB circuit board body 1. The length of the slots 7 is adapted to the width of the PET release film 5. One end of the PET release film 5 passes through the slots 7. By respectively arranging the structural adhesive layer 4 and the PET release film 5 on both sides of the bottom of the PCB circuit board body 1, before the PCB circuit board is installed, the PET release film 5 covers the structural adhesive layer 4. When the PCB circuit board is attached to the installation surface and the angle is adjusted correctly, the pull rings 6 on the PET release films 5 on both sides are respectively pulled, so that the PET release film 5 is separated from the structural adhesive layer 4, and then the structural adhesive layer 4 can be directly in contact with the installation surface to complete the fixed paste. Further pulling the pull ring can separate the PET release film 5 from the PCB circuit board body 1. This fixing method can avoid the situation that it is inconvenient to adjust due to deviation after pasting compared with the method of applying glue first and then pasting, and the paste fixing is more convenient and fast.

[0027] Embodiment 2: The width of the PET release film 5 is adapted to the width of the structural adhesive layer 4. The length of the PET release film 5 is more than twice the length of the structural adhesive layer 4. By restricting the length and width of the PET release film 5, when it is double-folded, it can completely cover the structural adhesive layer 4 to avoid the exposure of the structural adhesive layer 4 before fixing and affecting the viscosity.

[0028] Embodiment 3: A fillet 8 is opened on the inner side of the bottom of the slot 7. The friction coefficient between the bottom of the slot 7 and the PET release film 5 is less than 0.5. By rounding and polishing the bottom of the slot 7, the resistance received by the PET release film 5 when being pulled is smaller, avoiding the situation that the PET release film 5 breaks during the pulling process.

[0029] Embodiment 4: The material of the connecting piece 2 is alloy spring steel. When the connecting piece 2 is in a normal state, the PCB circuit board bodies 1 on both sides are parallel to each other. By setting the connecting piece 2 made of alloy spring steel in the middle of the PCB circuit board body 1, when the PET release film 5 on one side is pulled, the circuit board on the other side is pressed and the circuit board on this side is pried open at a certain angle, so that the PET release film 5 can be easily pulled out. After being pulled out, the tilted PCB circuit board body 1 is automatically reset under the action of the connecting piece 2. The above operation can be repeated to pull out the PET release film 5 on both sides to complete the pasting and fixation of the circuit board.

[0030] Embodiment 5: Threaded holes 9 are provided at the four corners of the PCB circuit board body 1, and the PCB circuit board body 1 is further fixedly connected to the mounting surface through the threaded holes 9 and screws.

[0031] The working principle of the utility model is as follows:

[0032] S1. A structural adhesive layer 4 and a PET release film 5 are respectively arranged on both sides of the bottom of the PCB circuit board body 1. Before the PCB circuit board is installed, the PET release film 5 covers the structural adhesive layer 4. After the PCB circuit board is attached to the installation surface and the angle is adjusted and corrected, the pull rings 6 on the PET release films 5 on both sides are pulled respectively to separate the PET release film 5 from the structural adhesive layer 4, so that the structural adhesive layer 4 can be directly in contact with the installation surface to complete the fixed adhesion. The pull ring can be further pulled to separate the PET release film 5 from the PCB circuit board body 1. Compared with the method of applying glue first and then pasting, this fixing method can avoid the situation where there is deviation and inconvenient adjustment after pasting, and pasting and fixing are more convenient and quick;

[0033] S2. Limit the length and width of the PET release film 5 so that it can completely cover the structural adhesive layer 4 when double-folded, to avoid exposure of the structural adhesive layer 4 before fixation, which affects the viscosity.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The PCB circuit board which is easy to fix is ​​provided with a structural adhesive layer 4 and a PET release film 5 on both sides of the bottom of the PCB circuit board body 1 respectively. Before the PCB circuit board is installed, the PET release film 5 covers the structural adhesive layer 4. After the PCB circuit board is attached to the installation surface and the angle is adjusted and corrected, the pull rings 6 on the PET release films 5 on both sides are pulled respectively to separate the PET release film 5 from the structural adhesive layer 4, so that the structural adhesive layer 4 can be directly contacted with the installation surface to complete the fixed attachment. The pull ring can be further pulled to separate the PET release film 5 from the PCB circuit board body 1. Compared with the method of applying glue first and then attaching, this fixing method can avoid the situation that the deviation after attachment is inconvenient to adjust, and the attachment and fixing are more convenient and quick.

[0036] 2. The PCB circuit board that is easy to fix, by limiting the length and width of the PET release film 5, can completely cover the structural adhesive layer 4 when it is double-folded, avoiding exposure of the structural adhesive layer 4 before fixation to affect the viscosity, and by rounding and polishing the bottom of the slot 7, the PET release film 5 is subjected to less resistance when being pulled, avoiding the PET release film 5 from breaking during the pulling process.

[0037] 3. The PCB circuit board which is easy to fix is ​​provided with a connecting piece 2 made of alloy spring steel in the middle of the PCB circuit board body 1. When the PET release film 5 on one side is pulled, the circuit board on the other side is pressed and the circuit board on the side is pried open at a certain angle, so that the PET release film 5 can be easily pulled out. After being pulled out, the tilted PCB circuit board body 1 is automatically reset under the action of the connecting piece 2. The above operation can be repeated to pull out the PET release films 5 on both sides to complete the pasting and fixing of the circuit board.

Claims

1. A PCB circuit board that is easy to fix, characterized in that: The invention comprises two parts of a PCB circuit board body (1), a connecting piece (2) is fixedly connected between the two parts of the PCB circuit board body (1), a plurality of electronic components (3) are fixedly connected to the top of the PCB circuit board body (1), a structural adhesive layer (4) is fixedly connected to the bottom of the PCB circuit board body (1), a PET release film (5) is arranged below the structural adhesive layer (4), and a pull ring (6) is fixedly connected to the end of the PET release film (5).

2. A PCB circuit board that is easy to fix according to claim 1, characterized in that: The structural adhesive layer (4) covers the bottom of the PCB circuit board body (1); one end of the two PET release films (5) are respectively fixedly connected to the two sides of the bottom of the PCB circuit board body (1); the PET release films (5) are double-folded below the structural adhesive layer (4); both sides of the PCB circuit board body (1) are provided with slots (7); the length of the slots (7) is adapted to the width of the PET release films (5); and one end of the PET release films (5) passes through the slots (7).

3. A PCB circuit board that is easy to fix according to claim 2, characterized in that: The width of the PET release film (5) is compatible with the width of the structural adhesive layer (4), and the length of the PET release film (5) is greater than twice the length of the structural adhesive layer (4).

4. The PCB circuit board that is easy to fix according to claim 3 is characterized in that: A rounded corner (8) is provided on the inner side of the bottom of the groove (7), and the friction coefficient between the bottom of the groove (7) and the PET release film (5) is less than 0.

5.

5. The PCB circuit board that is easy to fix according to claim 4 is characterized in that: The material of the connecting piece (2) is alloy spring steel, and the PCB circuit board bodies (1) on both sides of the connecting piece (2) are parallel to each other in a normal state.

6. The PCB circuit board that is easy to fix according to claim 5, characterized in that: The four corners of the PCB circuit board body (1) are each provided with a threaded hole (9), and the PCB circuit board body (1) is further fixedly connected to the mounting surface via the threaded hole (9) and screws.

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