Circuit board with short circuit prevention structure

Abstract

The utility model provides a circuit board with an anti-short circuit structure, which relates to the technical field of circuit boards and comprises an equipment mainboard, a circuit mainboard fixed at the top of the equipment mainboard, a cushioning frame arranged above the equipment mainboard, a circuit mainboard arranged on the inner wall of the cushioning frame, top limiting plates fixed at two sides of the top of the inner wall of the cushioning frame, and cushioning springs fixed at the bottoms of the top limiting plates. By adopting the mode of installing the cushioning springs, the problems that after the circuit board is installed, due to the fact that equipment actively or passively vibrates, the circuit board is impacted by vibration and is vibrated for a long time, elements on the surface of the circuit board continuously impact welding spots due to the influence of inertia of the elements, the fixing positions are loosened and fall off, and the circuit board is damaged are solved. Elements of the circuit board are small in interval and large in density, short contact of one ends of the elements can cause short-circuit burning of the circuit board or short-circuit breakdown of capacitors, smoke and even fire disasters are caused, use safety of users is affected, the occurrence rate of production equipment is increased, and casualties and property losses are caused.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board with an anti-short circuit structure. Background Art

[0002] A circuit board, also known as a printed circuit board, is a support that connects electronic components and circuits together. It is used to realize the layout design of complex circuits and electrical signal transmission in electrical and electronic equipment. It usually uses glass fiber as the base material and is processed by copper cladding, gold plating, etching and other processes. It is a basic electronic device used to build and arrange circuit components with circuit diagrams. It consists of multiple layers of printed circuit boards, which are perforated and plated with conductors for connection and conduction. In order to ensure that the circuit runs normally, all elements on the circuit board must be assembled correctly in their positions to construct the circuit requirements.

[0003] In the prior art, after the circuit board is installed on different equipment, the equipment will actively or passively vibrate after use. For example, large equipment will inevitably vibrate during production, or equipment such as keyboards will vibrate during transportation and knocking. The vibration will often affect the circuit board, causing the circuit board to be impacted by the vibration. After being vibrated for a long time, the components on the surface of the circuit board will continuously impact the solder joints due to their own inertia, causing the fixed position to loosen and fall off, resulting in damage to the circuit board and short circuit. The components on the circuit board are closely spaced and densely packed. If one end of the components touches each other, the circuit board will short-circuit and burn, or the capacitor will short-circuit and break down, causing smoke or even fire, affecting the user's safety, increasing the incidence of production equipment, and causing casualties and property losses. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a circuit board with an anti-short circuit structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a circuit board with an anti-short circuit structure, including a device mainboard, a circuit mainboard is fixed on the top of the device mainboard, a shock-absorbing frame is arranged above the device mainboard, a circuit mainboard is arranged on the inner wall of the shock-absorbing frame, top limit plates are fixed on both sides of the top of the inner wall of the shock-absorbing frame, a shock-absorbing spring is fixed on the bottom of the top limit plate, one side of the top limit plate is slidably connected to one side of the circuit mainboard, bumps are fixed on both sides of the circuit mainboard, one side of the bumps is slidably connected to one side of the inner wall of the shock-absorbing frame, and the top of the bumps is fixed to one end of the shock-absorbing spring. In the prior art, after the circuit board is installed on different devices, the devices will actively or passively vibrate after use, such as large equipment will inevitably vibrate during production, or devices such as keyboards will vibrate during transportation and knocking. The vibration often affects the circuit board, causing the circuit board to be impacted by the vibration. If the circuit board is subjected to vibration for a long time, the components on the surface of the circuit board will be affected by their own inertia. The vibration will continuously impact the soldering points, causing the fixed position to loosen and fall off, resulting in damage to the circuit board and short circuit. The components of the circuit board are closely spaced and densely packed. Short contact at one end will cause the circuit board to burn or the capacitor to break down, causing smoke or even fire, affecting the user's safety, increasing the incidence of production equipment, and causing casualties and property losses. In response to such problems, the utility model solves the problem by installing a shock-absorbing spring, so that when the circuit board is vibrated, the shock-absorbing spring absorbs the vibration and converts it into elastic potential energy. The elastic potential energy will cause the spring to continuously change its height back and forth within a certain range, reducing the interval amount of the equipment height change, but increasing the movement frequency of the equipment. When the equipment moves, the friction between the top limit plate and the circuit board and the friction between the bump and the inner wall of the shock-absorbing frame prevent the equipment from moving and releasing the elastic potential energy, and convert the elastic potential energy into internal energy through friction, thereby alleviating the vibration operation of the equipment and preventing the circuit board components from falling off and short-circuiting due to vibration, thereby achieving the effect of improving the stability of the circuit board.

[0006] Preferably, trapezoidal blocks are fixed on both sides of the shock-absorbing frame, and a fixing piece is fixed on the top of the device mainboard. A trapezoidal groove is opened on one side of the fixing piece, and the inner wall of the trapezoidal groove is slidably connected to the surface of the trapezoidal block. In the prior art, after the circuit board is installed on the inner wall of the device, the running vibration of the device will cause the circuit board to slip, resulting in the connection line between the circuit board and the device falling off, causing short circuit damage to the circuit board. To solve this problem, the utility model adopts the method of installing fixing pieces to solve it, so that when the device vibrates, the fixing pieces limit the vertical height change of the shock-absorbing frame, avoid the falling off of the connection between the overall component and the device, and achieve the effect of increasing the service life of the equipment.

[0007] Preferably, a flange rubber head is fixed to the bottom of the circuit main board, and the bottom of the flange rubber head is glued and fixed to the bottom of the inner wall of the shock-absorbing frame. In the prior art, when some equipment is subjected to large vibrations, such as bumpy roads during transportation, or hard collisions caused by falling during handling, the vibration value of the equipment may suddenly exceed the shock-absorbing range of the shock-absorbing component, causing the circuit board to be damaged or bent by collision, making it difficult to repair and use, resulting in a reduction in the yield rate. To address such problems, the utility model solves them by installing a flange rubber head, so that when the vibration value of the equipment suddenly exceeds the shock-absorbing range of the shock-absorbing component, the flange rubber head provides buffering to the equipment through its own deformation, reduces the speed of the equipment, prevents the circuit board from directly colliding with the shock-absorbing frame, avoids damage to the circuit board, and achieves the effect of improving the shock resistance of the equipment.

[0008] Preferably, fixing wings are fixed on both sides of the trapezoidal block. When the trapezoidal block slides into the trapezoidal groove, the staff can screw screws into the fixing wings to prevent the trapezoidal block from sliding out of the trapezoidal groove through the restriction of the screws.

[0009] Preferably, a rubber foot is fixed on the top of the shock absorbing frame, so that there is always a gap between the shock absorbing frame and the device and the insulation is improved, thereby preventing the metal casing of some devices from being electrified and piercing the circuit board.

[0010] Preferably, the cross-section of the trapezoidal block and the cross-section of the trapezoidal groove are both set to be trapezoidal, and the trapezoidal characteristics are used to prevent them from sliding left and right.

[0011] Preferably, the rubber foot is made of chloroprene rubber, which has good corrosion resistance and can prevent corrosion from lubricating oil and the like of the equipment, thereby increasing the service life of the component.

[0012] Beneficial Effects

[0013] 1. In the prior art, after the circuit board is installed in different equipment, the equipment will actively or passively vibrate after use. For example, large equipment will inevitably vibrate during production, or equipment such as keyboards will vibrate during transportation and knocking. The vibration will often affect the circuit board, causing the circuit board to be impacted by the vibration. After long-term vibration, the components on the surface of the circuit board will continuously impact the solder joints due to their own inertia, causing the fixed position to loosen and fall off, resulting in damage to the circuit board and short circuit. The components of the circuit board are closely spaced and densely packed. If one end of the circuit board short-circuit each other, the circuit board will be burned or the capacitor will be short-circuited, causing smoke or even fire, affecting the user's safety and increasing the production risk. The occurrence rate of equipment accidents increases, causing casualties and property losses. To solve this problem, the utility model adopts the method of installing a shock-absorbing spring to achieve a solution, so that when the circuit board is vibrated, the shock-absorbing spring absorbs the vibration and converts it into elastic potential energy. The elastic potential energy can make the spring continuously change its height back and forth within a certain range, reducing the range of equipment height change, but increasing the movement frequency of the equipment. When the equipment moves, the friction between the top limit plate and the circuit board and the friction between the protrusion and the inner wall of the shock-absorbing frame prevent the movement of the equipment and the release of elastic potential energy, and convert the elastic potential energy into internal energy through friction, thereby alleviating the vibration operation of the equipment and preventing the circuit board components from falling off and short-circuiting due to vibration, thereby achieving the effect of improving the stability of circuit board use.

[0014] 2. In the prior art, after the circuit board is installed on the inner wall of the equipment, the vibration of the equipment during operation may cause the circuit board to slip, resulting in the connection line between the circuit board and the equipment falling off, causing the circuit board to be short-circuited and damaged. To solve this problem, the utility model adopts a method of installing fixings to solve it. When the equipment vibrates, the fixings limit the vertical height change of the shock-absorbing frame, thereby preventing the connection between the overall component and the equipment from falling off, thereby achieving the effect of increasing the service life of the equipment.

[0015] 3. In the prior art, when some equipment is subjected to large vibrations, such as bumpy roads during transportation, or hard collisions caused by falling during handling, the vibration value of the equipment may suddenly exceed the cushioning range of the cushioning component, causing the circuit board to be damaged or bent due to collision, making it difficult to repair and use, resulting in a decrease in the yield rate. To address such problems, the utility model solves this problem by installing a flange rubber head, so that when the vibration value of the equipment suddenly exceeds the cushioning range of the cushioning component, the flange rubber head provides cushioning to the equipment through its own deformation, reduces the speed of the equipment, prevents the circuit board from directly colliding with the cushioning frame, avoids damage to the circuit board, and achieves the effect of improving the seismic resistance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the fixing member of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the shock absorbing spring of the utility model;

[0019] Figure 4 The figure is a three-dimensional structural schematic diagram of the rubber foot of the utility model.

[0020] Legend:

[0021] 1. Equipment main board; 101. Fixing piece; 102. Trapezoidal groove; 2. Shock-absorbing frame; 201. Top limit plate; 202. Fixed wing; 203. Trapezoidal block; 204. Flange rubber head; 205. Rubber pad; 3. Circuit main board; 301. Bump; 302. Shock-absorbing spring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0023] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment:

[0025] Reference Figure 1-4A circuit board with an anti-short circuit structure comprises a device mainboard 1, a circuit mainboard 3 is fixed on the top of the device mainboard 1, a shock absorbing frame 2 is arranged above the device mainboard 1, a circuit mainboard 3 is arranged on the inner wall of the shock absorbing frame 2, top limit plates 201 are fixed on both sides of the top of the inner wall of the shock absorbing frame 2, a shock absorbing spring 302 is fixed on the bottom of the top limit plate 201, one side of the top limit plate 201 is slidably connected to one side of the circuit mainboard 3, bumps 301 are fixed on both sides of the circuit mainboard 3, one side of the bump 301 is slidably connected to one side of the inner wall of the shock absorbing frame 2, and the top of the bump 301 is fixed to one end of the shock absorbing spring 302. After the circuit board is installed on different devices, the devices will actively or passively vibrate after use, such as large equipment will inevitably vibrate during production, or devices such as keyboards will vibrate during transportation and knocking. The vibration often affects the circuit board, causing the circuit board to be impacted by the vibration. After being vibrated for a long time, the components on the surface of the circuit board will continuously impact the solder joints due to their own inertia. Points, causing the fixed position to loosen and fall off, resulting in damage to the circuit board and short circuit. The spacing between the components of the circuit board is small and the density is large. Short contact between one end will cause the circuit board to short-circuit and burn or the capacitor to short-circuit and break down, causing smoke or even fire, affecting the user's safety, increasing the incidence of production equipment, causing casualties and property losses. The solution is to install a shock-absorbing spring 302, so that when the circuit board is vibrated, the shock-absorbing spring 302 absorbs the vibration and converts it into elastic potential energy. The elastic potential energy will cause the spring to continuously change its height back and forth within a certain range, reducing the interval amount of the equipment height change, but increasing the movement frequency of the equipment. When the equipment moves, the friction between the top limit plate 201 and the circuit main board 3 and the friction between the protrusion 301 and the inner wall of the shock-absorbing frame 2 prevent the equipment from moving and releasing the elastic potential energy, and convert the elastic potential energy into internal energy through friction, so as to alleviate the vibration operation of the equipment and prevent the circuit board components from falling off and short-circuiting due to vibration, thereby achieving the effect of improving the stability of the circuit board. A rubber pad 205 is fixed on the top of the shock absorbing frame 2, so that there is always a gap between the shock absorbing frame 2 and the device and the insulation is improved to prevent the metal shell of some devices from being charged and piercing the circuit board. The rubber pad 205 is made of chloroprene rubber, which has good corrosion resistance and can prevent the corrosion of lubricating oil and other objects of the equipment, thereby increasing the service life of the components.

[0026] Trapezoidal blocks 203 are fixed on both sides of the shock absorbing frame 2, and a fixing piece 101 is fixed on the top of the main board 1 of the equipment. A trapezoidal groove 102 is provided on one side of the fixing piece 101. The inner wall of the trapezoidal groove 102 is slidably connected to the surface of the trapezoidal block 203. After the circuit board is installed on the inner wall of the equipment, the vibration of the equipment during operation will cause the circuit board to slip, causing the connection line between the circuit board and the equipment to fall off, resulting in short circuit damage to the circuit board. The problem is solved by installing the fixing piece 101, so that when the equipment vibrates, the fixing piece 101 limits the vertical height change of the shock absorbing frame 2, avoiding the falling off of the connection between the whole component and the equipment, thereby achieving the effect of improving the service life of the equipment. Fixed wings 202 are fixed on both sides of the trapezoidal block 203. When the trapezoidal block 203 slides into the trapezoidal groove 102, the staff can screw screws into the fixed wings 202, and the restriction of the screws prevents the trapezoidal block 203 from sliding out of the trapezoidal groove 102. The cross-sections of the trapezoidal block 203 and the trapezoidal groove 102 are both set as trapezoids, and the trapezoidal characteristics prevent them from sliding left and right. A flange rubber head 204 is fixed at the bottom of the circuit board 3, and the bottom of the flange rubber head 204 is glued and fixed to the bottom of the inner wall of the shock-absorbing frame 2. When some equipment is subjected to large vibrations, such as bumpy roads during transportation, or hard collisions caused by falling during transportation, the vibration value of the equipment may suddenly exceed the shock-absorbing range of the shock-absorbing component, causing the circuit board to be damaged or bent by collision, making it difficult to repair and use, resulting in a decrease in the yield rate. This problem is solved by installing the flange rubber head 204, so that when the vibration value of the equipment suddenly exceeds the shock-absorbing range of the shock-absorbing component, the flange rubber head 204 provides buffering to the equipment through its own deformation, reduces the speed of the equipment, prevents the circuit board from directly colliding with the shock-absorbing frame 2, avoids damage to the circuit board, and achieves the effect of improving the shock resistance of the equipment.

[0027] The working principle of the utility model is as follows: when the circuit board is vibrated, the shock absorbing spring 302 absorbs the vibration and converts it into elastic potential energy. The elastic potential energy causes the spring to continuously change its height back and forth within a certain range, reducing the interval amount of the equipment height change, but increasing the movement frequency of the equipment. When the equipment moves, the friction between the top limit plate 201 and the circuit main board 3 and the friction between the protrusion 301 and the inner wall of the shock absorbing frame 2 prevent the equipment from moving and releasing the elastic potential energy, and convert the elastic potential energy into internal energy through friction, thereby alleviating the vibration operation of the equipment and preventing the circuit board assembly from falling off and short-circuiting due to vibration. When the equipment vibrates, the fixing part 101 limits the vertical height change of the shock absorbing frame 2. When the vibration value to which the equipment is subjected suddenly exceeds the shock absorbing range of the shock absorbing assembly, the flange rubber head 204 provides buffering to the equipment through its own deformation, reduces the speed of the equipment, and prevents the circuit board from directly colliding with the shock absorbing frame 2. After the trapezoidal block 203 slides into the trapezoidal groove 102, the staff can screw the screws into the fixed wing 202 to prevent the trapezoidal block 203 from sliding out of the trapezoidal groove 102 through the restriction of the screws.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A circuit board with an anti-short circuit structure, comprising a device main board (1), a circuit main board (3) being fixed on the top of the device main board (1), characterized in that: A shock absorbing frame (2) is arranged above the main board (1) of the device, a circuit main board (3) is arranged on the inner wall of the shock absorbing frame (2), top limit plates (201) are fixed on both sides of the top of the inner wall of the shock absorbing frame (2), a shock absorbing spring (302) is fixed on the bottom of the top limit plate (201), one side of the top limit plate (201) is slidably connected to one side of the circuit main board (3), protrusions (301) are fixed on both sides of the circuit main board (3), one side of the protrusions (301) is slidably connected to one side of the inner wall of the shock absorbing frame (2), and the top of the protrusion (301) is fixed to one end of the shock absorbing spring (302).

2. A circuit board with an anti-short circuit structure according to claim 1, characterized in that: Trapezoidal blocks (203) are fixed on both sides of the shock absorbing frame (2), a fixing piece (101) is fixed on the top of the device mainboard (1), a trapezoidal groove (102) is provided on one side of the fixing piece (101), and the inner wall of the trapezoidal groove (102) is slidably connected to the surface of the trapezoidal block (203).

3. The circuit board with an anti-short circuit structure according to claim 1, characterized in that: A flange rubber head (204) is fixed to the bottom of the circuit main board (3), and the bottom of the flange rubber head (204) is glued and fixed to the bottom of the inner wall of the shock absorbing frame (2).

4. The circuit board with an anti-short circuit structure according to claim 2, characterized in that: Fixed wings (202) are fixed on both sides of the trapezoidal block (203).

5. The circuit board with an anti-short circuit structure according to claim 1, characterized in that: A rubber pad (205) is fixed on the top of the shock absorbing frame (2).

6. The circuit board with an anti-short circuit structure according to claim 2, characterized in that: The cross-sections of the trapezoidal block (203) and the trapezoidal groove (102) are both set to be trapezoidal.

7. The circuit board with an anti-short circuit structure according to claim 5, characterized in that: The rubber pad (205) is made of chloroprene rubber.

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