Universal circular polyurethane potting jig for printed circuit board

Abstract

The utility model relates to a universal printed circuit board circular polyurethane potting jig, which comprises a base provided with a positioning hole and a potting hole; the plate clamping device is divided into an upper part, a middle part and a lower part, the upper part and the lower part are fastened through threads, the upper part is provided with an encapsulation hole, the middle part is provided with a height fixing ring, the position of the height fixing ring corresponds to the position of the clamping groove of the positioning column, the height fixing ring is provided with a pin, the pin is matched with the clamping groove 2 and used for limiting the rotation angle of the plate clamping device, and the lower part is relatively inserted into the circular encapsulation hole of the base. The base is used for clamping the printed circuit board in the base; a semicircular clamping groove and a C-shaped clamping groove are formed in the top of the positioning column, the position of the semicircular clamping groove corresponds to the position of a pin in the middle of the plate clamping device, the position of the C-shaped clamping groove corresponds to the position of a height fixing ring in the middle of the plate clamping device, two positioning pins are arranged at the bottom of the positioning column, and the positions of the positioning pins correspond to the positions of the base positioning holes. Compared with the prior art, the position and the angle of the printed board are fixed and adjusted through the board clamping device and the positioning column to carry out polyurethane potting, so that the printed board is prevented from deviating from the central position in the potting process, and meanwhile, the angle and the height of the printed board can be adjusted according to actual requirements.

Description

Technical Field

[0001] The utility model relates to a polyurethane potting jig for a printed circuit board, in particular to a universal circular polyurethane potting jig for a printed circuit board. Background Art

[0002] Printed circuit boards are the core components of electronic equipment. In some R&D activities, in order to protect electronic components and circuits from environmental factors such as moisture, dust, magnetic interference, vibration and static electricity, and to enhance the structural strength and impact resistance of the equipment, polyurethane potting glue is used to fill the gap between components and circuit boards to increase the bonding and fixing effect, prevent vibration and falling off, and protect the equipment from external damage.

[0003] At present, polyurethane potting glue is liquid, and the printed circuit board or device needs to be fixed before the potting process. However, some small and unfixed boards will be offset due to the flow of liquid during the potting process, making it impossible to ensure that the printed circuit board is reserved at the originally set position and angle, and the printed circuit board cannot be well protected. Summary of the invention

[0004] The purpose of the utility model is to provide a universal printed circuit board circular polyurethane potting jig, which is potted by fixing the height and rotation angle of the printed circuit board through a clamp, a positioning column and a base, so as to prevent the printed circuit board from deviating from the center position and failing to reach the desired rotation angle during the potting process due to the flow of liquid. It can reduce the difficulty of circular polyurethane potting. At the same time, the height of the clamp can be adjusted according to the shape and size of the printed circuit board or different bases can be replaced to be suitable for potting of various printed circuit boards, thereby reducing the loss of the printed circuit board and improving the working efficiency of polyurethane potting.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A universal printed circuit board circular polyurethane potting fixture, comprising:

[0007] A base, on which two circular positioning holes are provided, and a potting hole is provided on the top;

[0008] The positioning column has a semicircular slot and a C-shaped slot on the top, the position of the semicircular slot corresponds to the position of the pin in the middle of the clamp, the position of the C-shaped slot corresponds to the position of the height-fixing ring in the middle of the clamp, and two positioning pins are provided at the bottom, the positions of the positioning pins correspond to the positions of the positioning holes of the base;

[0009] The clamp is divided into three parts: upper, middle and lower. The upper and lower parts are fastened by threads to adjust the height of the board. The upper part is provided with a potting hole, and the middle part is provided with a height-fixing ring. The position of the height-fixing ring corresponds to the position of the card slot of the positioning column. The height-fixing ring is provided with a pin. The position of the pin corresponds to the position of the card slot of the positioning column, and the pin height is greater than the card slot thickness. It is used to limit the rotation angle of the clamp. The lower part is relatively inserted into the circular potting hole of the base. The clamp is used to clamp the printed circuit board inside the potting hole of the base;

[0010] A positioning pin is provided at the bottom of the positioning column, and a positioning hole matching with the positioning pin is provided on the base;

[0011] The clamping device is provided with a pin, and the top of the positioning column is provided with a slot that matches the pin;

[0012] The card slot is in a semicircular ring shape;

[0013] The pin is cylindrical, and its height is greater than the thickness of the slot;

[0014] The clamping device and the positioning column are both photosensitive resin parts, and the base is a stainless steel part;

[0015] The upper and lower parts of the clamp are fastened by threads;

[0016] The pin is located at the upper and lower connecting parts of the clamp;

[0017] The potting hole of the base is circular, and the size of the hollow hole matches the clip;

[0018] A semicircular ring is provided at the lower part of the positioning column to reinforce the body.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1) Fix the height and rotation angle of the printed circuit board through the clamp, positioning column and base for potting, so as to prevent the printed circuit board from deviating from the center position and failing to reach the desired rotation angle during the potting process due to the flow of liquid. It can reduce the difficulty of round polyurethane potting. At the same time, the height of the clamp can be adjusted according to the shape and size of the printed circuit board or different bases can be replaced to apply to the potting of various printed circuit boards, reducing the loss of the printed circuit board and improving the working efficiency of polyurethane potting;

[0021] 2) The base and the positioning column are provided with positioning pins and positioning holes, which are used to fix the positioning column on the base to prevent movement during the potting process;

[0022] 3) There are height-fixing rings and slots on the clamp and positioning column, which are used to fix the height of the printed circuit board and adjust the angle of the printed circuit board to prevent the printed circuit board from deviating due to the pouring of polyurethane potting glue on the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the base and positioning column of the utility model;

[0024] Figure 2 This is a schematic diagram of the assembled finished product of the utility model;

[0025] Figure 3 is a schematic diagram of the structure of the splint;

[0026] Figure 4 is a schematic diagram of the structure of the base;

[0027] Among them: 1. clamp, 2. positioning column, 3. base, 1.1. potting hole, 1.2. pin, 1.3. height setting ring, 1.4. clamp, 2.1. slot, 2.2. positioning pin, 3.1. potting hole, 3.2. positioning hole. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following implementation cases.

[0029] A universal printed circuit board circular polyurethane potting fixture, such as Figures 1 to 4 As shown, including:

[0030] The base 3 is provided with two circular positioning holes 3.2 and a potting hole 3.1 at the top;

[0031] The positioning column 2 has a semicircular slot 2.1 on its top, the position of which corresponds to the position of the pin 1.2 in the middle of the clamping device, and two positioning pins 2.2 on its bottom, the positions of which correspond to the positions of the positioning holes 3.2 on the base;

[0032] The clamp 1 is divided into three parts: upper, middle and lower parts. The upper and lower parts are fastened by threads to adjust the height of the board. A potting hole 1.1 is provided in the upper part, and a height-fixing ring 1.3 is provided in the middle part. The position of the height-fixing ring 1.3 corresponds to the position of the slot 2.1 of the positioning column 2. A pin 1.2 is provided on the height-fixing ring. The position of the pin 1.2 corresponds to the position of the slot 2.1 of the positioning column 2, and the height of the pin 1.2 is greater than the thickness of the slot 2.1, which is used to limit the rotation angle of the clamp. The lower part is relatively inserted into the circular potting hole 3.1 of the base 3, and the clamp 1.4 is used to clamp the printed circuit board inside the potting hole of the base.

[0033] The height and rotation angle of the printed circuit board are fixed by the clamp 1, the positioning column 2 and the base 3 for potting, so as to prevent the printed circuit board from deviating from the center position and failing to reach the ideal rotation angle during the potting process due to the flow of liquid. The difficulty of round polyurethane potting can be reduced. At the same time, the height of the clamp can be adjusted according to the shape and size of the printed circuit board or different bases can be replaced to be suitable for potting of various printed circuit boards, which reduces the loss of the printed circuit board and improves the working efficiency of polyurethane potting.

[0034] In some embodiments, a circular positioning pin 2.2 is provided at the bottom of the positioning column 2, and a circular positioning hole 3.2 is provided on the base 3 to cooperate with the positioning pin, which facilitates loading and unloading and improves efficiency. At the same time, a height-fixing ring 1.3 is provided in the middle of the clamp 1, and two C-shaped slots are provided on the top of the positioning column 2 to cooperate with the height-fixing ring, which are used in conjunction with the positioning pin 2.2 and the positioning hole 3.2, thereby improving the fixing effect of the clamp 1.

[0035] The clamping device 1 and the positioning column 2 are both photosensitive resin parts, and the base 3 is a stainless steel part.

[0036] The clamp 1.4 is in a groove shape, which ensures the clamping effect and improves the loading and unloading efficiency of the printed circuit board.

[0037] The positioning hole 3.2 is located near the edge of the base 3, which is convenient for operation and reduces the difficulty of processing the base.

[0038] The base 3 plays a fixing role. When in use, insert the positioning pin 2.2 into the positioning hole 3.2, then adjust the length of the clamp 1 according to the height of the printed board, fix the printed board at the bottom of the clamp 1, and then insert it into the potting hole 3.1, insert the pin 1.2 and the height-fixing ring 1.3 into the slot 2.1, and adjust the angle of the printed board for potting.

[0039] Taking a printed circuit board with a width of 40 mm and a length of 80 mm as an example of the printed circuit board to be potted, when in use, select a suitable base 3 according to the size of the printed circuit board, insert the positioning pin 2.2 at the bottom of the positioning column 2 into the positioning hole 3.2 of the base 3, and then adjust the height of the height ring 1.3 of the clamp 1 according to the height of the printed circuit board, and then clamp the printed circuit board on the clamp 1.4 at the bottom of the clamp 1, and finally insert the clamp 1 with the printed circuit board into the potting hole 3.1, and clamp the pin 1.2 into the positioning column slot 2.1 for potting.

[0040] Each printed circuit board is fixed in the base by the clamp 1.4 on the clamp 1, and the printed circuit board angle is rotated by the pin 1.2 and the slot 2.1, which largely prevents the printed circuit board from being pushed by the polyurethane potting glue, so that the potted printed circuit board retains the originally expected height and angle.

Claims

1. A universal printed circuit board circular polyurethane potting fixture, characterized in that: include: A base (3) having two circular positioning holes (3.2) formed thereon and a potting hole (3.1) formed on the top thereof; A positioning column (2) having a semicircular slot (2.1) and a C-shaped slot on its top, the position of the semicircular slot corresponding to the position of a pin (1.2) in the middle of the clamping device, the position of the C-shaped slot corresponding to the position of a height-fixing ring (1.3) in the middle of the clamping device, and two positioning pins (2.2) on its bottom, the positions of the positioning pins corresponding to the positions of positioning holes (3.2) in the base; The clamp (1) is divided into three parts: an upper part, a middle part and a lower part. The upper and lower parts are fastened by threads to adjust the height of the board. The upper part is provided with a potting hole (1.1), and the middle part is provided with a height-fixing ring (1.3). The position of the height-fixing ring (1.3) corresponds to the position of the slot (2.1) of the positioning column (2). The height-fixing ring is provided with a pin (1.2). The position of the pin (1.2) corresponds to the position of the slot (2.1) of the positioning column (2), and the height of the pin (1.2) is greater than the thickness of the slot (2.1). The pin is used to limit the rotation angle of the clamp. The lower part is relatively inserted into the circular potting hole (3.1) of the base (3). The clamp (1.4) is used to clamp the printed circuit board inside the potting hole of the base.

2. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: A positioning pin (2.2) is provided at the bottom of the positioning column (2), and a positioning hole (3.2) cooperating with the positioning pin is provided on the base (3).

3. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: The clamping device (1) is provided with a pin (1.2), and the top of the positioning column (2) is provided with a slot (2.1) that cooperates with the pin.

4. A universal printed circuit board circular polyurethane potting jig according to claim 3, characterized in that: The clamping groove (2.1) is in the shape of a semicircular ring.

5. A universal printed circuit board circular polyurethane potting jig according to claim 3, characterized in that: The pin (1.2) is cylindrical, and its height is greater than the thickness of the slot (2.1).

6. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: The clamping device (1) and the positioning column (2) are both photosensitive resin parts, and the base (3) is a stainless steel part.

7. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: The upper and lower parts of the clamp (1) are fastened by threads.

8. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: The pin (1.2) is located at the upper and lower connecting parts of the clamp (1).

9. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: The base potting hole (3.1) is circular, and the size of the hollow hole matches the clip (1.4).

10. A universal printed circuit board circular polyurethane potting jig according to claim 1, characterized in that: A semicircular ring is provided at the lower part of the positioning column (2) to reinforce the main body.

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