Anti-interference PCB

Abstract

The utility model discloses an anti-interference PCB (Printed Circuit Board), which comprises a PCB main board, the supporting assembly comprises an outer shielding frame installed on the outer side of the PCB mainboard and limiting blocks distributed on the surface of the outer shielding frame in a bilateral symmetry mode. The clamping assembly comprises a supporting plate connected with the outer shielding frame, a connecting block connected with the top end of the supporting plate, a pressing plate with the two ends matched with the top surface of the connecting block respectively, and a fixing plate with the two ends perpendicular to the connecting block respectively, and a lifting rod and a contraction spring arranged on the outer side of the lifting rod in a sleeving mode are arranged in the connecting block; the shielding assembly comprises a limiting plate arranged between the pressing plate and the fixing plate, and a connecting strip of which the top end is connected with the end part of the limiting plate; the PCB is provided with a design for separating adjacent electronic components and achieving the purpose of signal shielding, the positions of the supporting plate, the pressing plate and the fixing plate are changed, the limiting plate is installed between the pressing plate and the fixing plate, the anti-interference shielding plate is located at the position between the adjacent electronic components on the PCB mainboard, and the effect of shielding electromagnetic interference is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to PCB board technical field, concretely relates to an anti -interference PCB board. BACKGROUND

[0002] PCB board, also known as printed circuit board, printed circuit board etc., is important electronic component, is the support of electronic components, is the provider of electronic components electrical connection, PCB board is widely used, PCB board is suitable for air conditioner aspect, in air conditioner, PCB board can be used to control air conditioner operation and realize various functions circuit board, PCB board contains various electronic components, connectors, plugs and the like for realizing various functions of air conditioner, is connected through circuit, realizes the basic function of air conditioner;

[0003] PCB board is installed with various electronic components, in order to reduce and resist the influence and interference of external interference factors on the electronic components on PCB board, the commonly used anti-interference method is to install anti-interference capacitor on PCB board, install anti-interference shield on the outside of PCB board, but when the electronic components on PCB board are more and closely distributed, the signals between the adjacent electronic components covered by anti-interference shield interfere with each other, cannot be shielded between adjacent electronic components, when the electronic components on PCB board are more and closely distributed, there is no signal separation between adjacent electronic components and the design problem of achieving shielding purpose, therefore, the application provides an anti-interference PCB board. UTILITARIAN CONTENT

[0004] The utility model aims at providing an anti-interference PCB board to solve the design problem of not separating signals between adjacent electronic components and achieving shielding purpose on the PCB board in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: an anti-interference PCB board, comprising

[0006] PCB mainboard;

[0007] Supporting assembly, including the outer shielding frame installed on the outside of PCB mainboard, the limiting block symmetrically distributed on the surface of outer shielding frame;

[0008] Clamping assembly, including the support plate connected with outer shielding frame, the connecting block connected with the top end of support plate, the pressing plate with both ends respectively coinciding with the top surface of connecting block, the fixed plate with both ends respectively perpendicular to connecting block, the inside of connecting block is equipped with pull rod, the contraction spring of sleeve is equipped on the outside of pull rod;

[0009] Shielding assembly, including the limiting plate installed between pressing plate and fixed plate, the connecting strip connected with the end of limiting plate, the anti-interference shield plate connected with the bottom end of connecting strip, the limiting plate is equipped with lug.

[0010] Preferably, the surface of the limiting block is provided with a special-shaped sliding groove for sliding of the supporting plate, and the bottom end of the supporting plate is located inside the special-shaped sliding groove.

[0011] Preferably, the supporting plate comprises a vertical plate a, a right-angle elastic plate b, a damping plate c and a curved pressing elastic plate d, and the bottom end of the vertical plate a, the right-angle elastic plate b and the damping plate c are located inside the special-shaped sliding groove.

[0012] Preferably, the limiting block is provided with a damping pad on the inner side wall of the special-shaped sliding groove, and the damping pad is matched with the damping plate c.

[0013] Preferably, the lifting rod is in an inverted "T" type structure, one end of the lifting rod penetrating through the contraction spring and the top surface of the connecting block is connected with the end of the pressing plate, and the pressing plate is parallel to the fixed plate.

[0014] Preferably, a plurality of equidistantly distributed grooves matched with the convex blocks are formed on the surface of the fixed plate, and the surface of one side of the fixed plate is in a bevel shape.

[0015] Preferably, the end of the limiting plate close to the connecting strip is in a right-angle structure, the surface of the other side of the limiting plate is in a curved shape, and the surface of the side of the limiting plate away from the connecting strip is matched with the bevel of the fixed plate.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] In the utility model, there is a design for separating adjacent electronic components and achieving signal shielding on the PCB, the positions of the supporting plate, the pressing plate and the fixed plate are changed, the limiting plate is installed between the pressing plate and the fixed plate, the anti-interference shielding plate is located between adjacent electronic components on the PCB mainboard, and the effect of shielding electromagnetic interference is achieved. BRIEF DESCRIPTION OF DRAWINGS

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

[0019] Figure 2 It is a structural schematic view of the utility model; Figure 1 It is an enlarged structural schematic view of A part in the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic view of the limiting block in the utility model;

[0021] Figure 4 It is a sectional structural schematic view of the connecting block in the utility model;

[0022] Figure 5 It is a sectional structural schematic view of the fixed plate in the utility model;

[0023] Figure 6 It is the fixed plate's three-dimensional structure schematic view of the utility model;

[0024] In the drawing: 1, PCB mainboard;21, outer shielding frame;22, limit block;31, support plate;32, connecting block;33, pressing plate;34, fixed plate;41, limit plate;42, connecting strip;43, anti-interference shielding plate;221, damping pad;321, pull rod;322, contraction spring;341, recess;411, protruding block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. EMBODIMENT

[0026] Please refer to Figures 1 to 6The utility model provides a kind of technical scheme: an anti-interference PCB, including PCB mainboard 1, the principle that tin solder various electronic components on PCB mainboard 1 is conventional technical means, this application is not described in detail;Supporting assembly, including the outer shielding frame 21 being installed in the outer side of PCB mainboard 1, the limiting block 22 being symmetrically distributed on the surface of outer shielding frame 21, shielding coating is daubed on the outer surface of outer shielding frame 21 and limiting block 22, shielding effect is played, limiting block 22 and outer shielding frame 21 are combined by conventional method, limiting block 22 plays the role of limiting supporting plate 31;Clamping assembly, including the supporting plate 31 being connected with outer shielding frame 21, the connecting block 32 being connected with the top end of supporting plate 31, the pressing plate 33 being respectively consistent with the top surface of connecting block 32 at two ends, the fixed plate 34 being respectively vertically connected with connecting block 32 at two ends, supporting plate 31 supports connecting block 32, so that the pressing plate 33 and fixed plate 34 installed between opposite connecting block 32 are in suspended state, pressing plate 33 and fixed plate 34 clamp limiting plate 41, it is convenient to install limiting plate 41, the inside of connecting block 32 is equipped with pull rod 321, contraction spring 322 is sleeved in the outer side of pull rod 321, pressing plate 33 and pull rod 321 are combined by conventional method, pressing plate 33 moves up and pulls pull rod 321, contraction spring 322 is in contraction state, the distance between pressing plate 33 and fixed plate 34 can be adjusted, it is beneficial to the dismounting of limiting plate 41;Shielding assembly, including the limiting plate 41 being installed between the position of pressing plate 33 and fixed plate 34, the connecting strip 42 being connected with the end portion of limiting plate 41 at top end, the anti-interference shielding plate 43 being connected with the bottom end of connecting strip 42, limiting plate 41 is equipped with boss 411, the anti-interference shielding plate 43 is made of the material that ferrite shields electromagnetic interference, limiting plate 41 is installed between pressing plate 33 and fixed plate 34, the anti-interference shielding plate 43 is located between the position of adjacent electronic components on PCB mainboard 1, plays the effect of shielding electromagnetic interference.

[0027] In the embodiment, the surface of the limiting block 22 is provided with a special-shaped sliding groove for sliding of the supporting plate 31, the bottom end of the supporting plate 31 is located in the special-shaped sliding groove, the supporting plate 31 includes a vertical plate a, a right-angle elastic plate b, a damping plate c and a curved pressing elastic plate d, the bottom end of the vertical plate a, the right-angle elastic plate b and the damping plate c are located in the special-shaped sliding groove, the vertical plate a of the supporting plate 31 is made of a ferrite shielding material, and the right-angle elastic plate b, the damping plate c and the pressing elastic plate d are made of a spring steel material, the pressing elastic plate d can be moved to have a gap between the pressing elastic plate d and the limiting block 22, which is beneficial to movement of the supporting plate 31 on the limiting block 22, and different numbers of supporting plates 31 can be installed on the limiting block 22 according to needs.

[0028] In the embodiment, the limiting block 22 is provided with a damping pad 221 on the inner side wall of the special-shaped sliding groove, the damping pad 221 is consistent with the damping plate c, and there is damping friction force between the damping pad 221 and the damping plate c, so that the supporting plate 31 remains in a stable state without being subjected to certain external force.

[0029] In the embodiment, the lifting rod 321 is in inverted T-shaped structure, the lifting rod 321 is connected with the end of the compression spring 322 and the end of the pressing plate 33 through the top surface of the connecting block 32, the pressing plate 33 is parallel to the fixed plate 34, the pressing plate 33 moves upwards and pulls the lifting rod 321, the compression spring 322 is in the contraction state, the distance between the pressing plate 33 and the fixed plate 34 can be adjusted, and the disassembly and assembly of the limiting plate 41 are facilitated.

[0030] In the embodiment, the surface of the fixed plate 34 is provided with equidistantly distributed grooves 341 matched with the protrusions 411, the protrusions 411 are embedded in the inside of the grooves 341, the limiting plate 41 is accurately installed, one side surface of the fixed plate 34 is in bevel shape, the end of the limiting plate 41 close to the connecting strip 42 is in right angle structure, the surface of the other side of the limiting plate 41 is in curved shape, the surface of the other side of the limiting plate 41 away from the connecting strip 42 is in conformity with the bevel of the fixed plate 34, when one end of the limiting plate 41 is installed between the pressing plate 33 and the fixed plate 34, the end of the limiting plate 41 is in conformity with the fixed plate 34, and the pressing plate 33 presses the limiting plate 41.

[0031] The working principle and use process of the utility model are as follows:

[0032] When the anti-interference shielding treatment is carried out on the PCB mainboard 1, the outer shielding frame 21 is installed on the outer side of the PCB mainboard 1.

[0033] The pressing elastic plate d of the supporting plate 31 is actuated, and then the bottom end of the supporting plate 31 is moved to the appropriate position in the inside of the limiting block 22, the pressing elastic plate d of the supporting plate 31 is in conformity with the damping pad 221, and the damping pad 221 and the damping plate c have damping friction force, and the supporting plate 31 keeps the stable state under the condition that the certain external force is not acted.

[0034] The pressing plate 33 moves upwards and pulls the lifting rod 321, the compression spring 322 is in the contraction state, the distance between the pressing plate 33 and the fixed plate 34 can be adjusted, and the installation of the limiting plate 41 is facilitated.

[0035] The end of the limiting plate 41 is moved between the pressing plate 33 and the fixed plate 34, and the protrusion 411 is embedded in the inside of the groove 341 after the limiting plate 41 is moved to the appropriate position, so that the limiting plate 41 is accurately installed.

[0036] The pressing plate 33 is loosened, the pressing plate 33 is fixed by the lifting rod 321 under the elastic force of the compression spring 322, and then the pressing plate 33 presses the limiting plate 41.

[0037] The limiting plate 41 is installed between the pressing plate 33 and the fixed plate 34, the anti-interference shielding plate 43 is located between the adjacent electronic components on the PCB mainboard 1, and the anti-interference shielding plate 43 has the effect of shielding electromagnetic interference.

[0038] In summary: there is a design on the PCB board separating adjacent electronic components and achieving the purpose of signal shielding, the limiting plate 41 is installed between the pressing plate 33 and the fixed plate 34, the anti-interference shielding plate 43 is located between the adjacent electronic components on the PCB mainboard 1, and the effect of shielding electromagnetic interference is achieved.

[0039] Although the embodiments of the present application have been shown and described in detail (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An interference-resistant PCB board, characterized by: The utility model relates to a shielding device for PCB mainboard PCB mainboard (1); Supporting assembly, including the outer shielding frame (21) of installation on the outer side of PCB mainboard (1), the limiting block (22) of bilateral symmetry distribution on the surface of outer shielding frame (21); Clamping assembly, including the support plate (31) connected with outer shielding frame (21), the connecting block (32) connected with the top end of support plate (31), the pressing plate (33) of two ends respectively with the top surface of connecting block (32) coincide, the fixed plate (34) of two ends respectively vertical connecting block (32), the inside of connecting block (32) is equipped with pull rod (321), the contraction spring (322) of sheathed in pull rod (321) outside; Shielding assembly, including the limiting plate (41) of installation between the position of pressing plate (33) and fixed plate (34), the connecting strip (42) of top end with the end connecting of limiting plate (41), the anti-interference shield plate (43) with the bottom end connecting of connecting strip (42), the convex block (411) on limiting plate (41) is equipped with.

2. The anti-interference PCB of claim 1, wherein: The surface of limiting block (22) is provided with a special-shaped sliding groove for sliding of support plate (31), and the bottom end of support plate (31) is located in the special-shaped sliding groove.

3. The anti-interference PCB of claim 2, wherein: The support plate (31) includes a vertical plate a, a right-angle elastic plate b, a damping plate c and a curved pressing elastic plate d, and the bottom end of the vertical plate a, the right-angle elastic plate b and the damping plate c are located in the special-shaped sliding groove.

4. The anti-interference PCB of claim 3, wherein: The damping pad (221) is located on the inner side wall of the special-shaped sliding groove of the limiting block (22), and the damping pad (221) is coincided with the damping plate c.

5. The anti-interference PCB of claim 1, wherein: The pull rod (321) is an inverted "T" type structure, one end of the pull rod (321) penetrates the contraction spring (322) and the top surface of the connecting block (32) and is connected with the end of the pressing plate (33), and the pressing plate (33) is parallel to the fixed plate (34).

6. The anti-interference PCB of claim 1, wherein: The surface of the fixed plate (34) is provided with equidistantly distributed grooves (341) matched with the convex blocks (411), and one side surface of the fixed plate (34) is in the shape of an inclined plane.

7. The anti-interference PCB of claim 1, wherein: The end of the limiting plate (41) close to the connecting strip (42) is in a right-angle structure, the surface of the other side of the limiting plate (41) is in a curved shape, and the surface of the other side of the limiting plate (41) away from the connecting strip (42) is coincided with the inclined surface of the fixed plate (34).

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