Circuit board with electromagnetic shielding structure

Abstract

The utility model relates to the field of circuit boards, in particular to a circuit board with an electromagnetic shielding structure, which comprises a circuit board main body, a component main body used for equipment, an electromagnetic shielding layer and a shielding layer, and outer mounting frames are fixedly mounted on the two sides of the exterior of the electromagnetic shielding layer. The circuit board is provided with the electromagnetic shielding layers, the threaded holes, the threaded rods, the butt joint blocks, the butt joint grooves, the embedded blocks, the element shielding covers and the outer shielding covers, when the circuit board is used, the upper electromagnetic shielding layer and the lower electromagnetic shielding layer effectively block electromagnetic wave interference from different directions, the circuit board and the sensitive elements are protected from being damaged by external electromagnetic waves, and the service life of the circuit board is prolonged. Then, according to the use requirement of the sensitive element, a butt joint block is mounted outside the sensitive element through a threaded hole and a threaded rod, and then an element shielding cover is fitted through a butt joint groove and an embedded block, so that the electromagnetic shielding effect of a key area is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit board, concretely relates to a circuit board with electromagnetic shielding structure. BACKGROUND

[0002] Circuit board, also known as printed circuit board, is an indispensable component in electronic equipment, and the circuit board is a conductive pattern formed by printed circuit, printed component or combination of both on an insulating base material according to a predetermined design, which is a component for supporting and connecting electronic components in electronic equipment, and mainly composed of pads, vias, mounting holes, wires, components, connectors, filling, electrical boundaries, etc.

[0003] Through the retrieval, the announcement number for CN209151423U of a dustproof circuit board is specifically disclosed, and the structure includes circuit board body, isolation coil, electronic component mounting groove, heat dissipation dustproof film and fixed key, the utility model discloses a dustproof circuit board, which is provided with a heat dissipation dustproof film, which plays a waterproof and breathable role by EPTFE film, a heat dissipation resin layer, which absorbs heat, plays a role of balancing the temperature of the circuit board body, a fireproof coating, which plays a role of protecting the circuit board body from fire, a scale graphite layer, which plays a role of preventing corrosion, and a nano coating, which plays a role of dustproof and antifouling, so that the circuit board cannot play the roles of fireproofing, dustproofing and heat dissipation, the fixed key is provided, the clamping block is subjected to tension, the elastic block is deformed, the elastic force is generated, then the circuit board body and the connecting block are inserted, the clamping block is loosened, the elastic block is restored, the clamping block is subjected to pressure to the circuit board body to fasten, and the problem that the circuit board cannot be quickly disassembled is solved.

[0004] The existing circuit board lacks electromagnetic shielding structure in the use process, so that the circuit board is easily disturbed by external electromagnetic field, leading to the decline or failure of circuit performance, and the electromagnetic interference also leads to the decline of signal quality on the circuit board, including signal distortion, noise increase and other conditions, and the circuit board in the above comparative case also lacks electromagnetic shielding structure, which will also lead to data error and communication failure in long-term use, affecting the reliability and stability of the equipment.

[0005] Therefore, it is necessary to invent a circuit board with electromagnetic shielding structure to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a kind of circuit boards with electromagnetic shielding structure, through electromagnetic shielding layer, screw hole, threaded rod, butt block, butt groove, inlay block, component shield and outer shield realize let the circuit board have multi-layer electromagnetic shielding structure, such electromagnetic shielding structure not only enhances electromagnetic shielding performance, but also improves the applicability of circuit board whole, so that circuit board is applicable in various environments needing high electromagnetic shielding performance, such as communication equipment, computer, medical equipment etc.,And electromagnetic interference also reduces the quality decline of signal on circuit board, signal distortion, noise increase etc., reduce data error and communication failure under long-term use, guarantee the reliability and stability effect of equipment use, to solve the circuit board in prior art in use process, lack electromagnetic shielding structure, circuit board is susceptible to external electromagnetic field interference, leading to circuit performance decline or failure, while electromagnetic interference also leads to signal quality decline on circuit board, including signal distortion, noise increase etc., and the circuit board in the above comparative case also lacks electromagnetic shielding structure, so long-term use also leads to data error and communication failure, affect the reliability and stability of equipment.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of circuit board with electromagnetic shielding structure, including circuit board main body, component main body for equipment use;

[0008] Electromagnetic shielding layer is arranged at the outside of circuit board main body, for enhancing the electromagnetic shielding ability of circuit board itself, and the outside of electromagnetic shielding layer is fixedly installed with outer mounting bracket on both sides, the outer mounting bracket is provided with mounting groove, the upper side of the electromagnetic shielding layer is fixedly installed with sensitive element, and the bottom of the electromagnetic shielding layer is fixedly installed with component pin;

[0009] Screw hole is arranged above electromagnetic shielding layer, for connecting installation threaded rod, and the top of threaded rod is fixedly installed with butt block, the upper side of butt block is provided with butt groove, the inside of butt groove is movably connected with inlay block, the upper side of inlay block is fixedly installed with component shield, the both sides of component shield are fixedly installed with side seal, the bottom of component shield is fixedly installed with damping telescopic spring, the bottom end of damping telescopic spring is fixedly installed with long strip contact, the upper side of outer mounting bracket is penetrated by fastening bolt, and the upper end of fastening bolt is movably connected with outer shield.

[0010] Preferably, the electromagnetic shielding layer is fixedly connected with the circuit board main body, and the butt block is threadedly connected with the electromagnetic shielding layer.

[0011] Preferably, the inlay block fixedly installed on the bottom plate of the component shield is engagedly connected with the butt groove provided above the butt block, and the inlay block is used in cooperation with the butt groove.

[0012] Preferably, the number of damping telescopic springs is set to be multiple, and the multiple damping telescopic springs are distributed at equal intervals on the long strip contact.

[0013] Preferably, a support frame is threadedly connected above the electromagnetic shielding layer, a horizontal rack rod is fixedly installed inside the support frame, and heat dissipation fins are fixedly installed outside the horizontal rack rod.

[0014] Preferably, the number of heat dissipation fins is set to be multiple, and the multiple heat dissipation fins are distributed at equal intervals on the horizontal rack rod.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are as follows:

[0016] 1. The utility model provides an electromagnetic shielding layer, a threaded hole, a threaded rod, a butt joint block, a butt joint groove, an embedded block, an element shielding cover and an outer shielding cover are arranged, when the circuit board is used, the upper and lower two electromagnetic shielding layers effectively block electromagnetic wave interference from different directions, protect the circuit board and sensitive elements from the invasion of external electromagnetic waves, then according to the use requirement of the sensitive elements, the butt joint block is installed on the outside of the sensitive elements through the threaded hole and the threaded rod, the element shielding cover is fitted on through the butt joint groove and the embedded block, the electromagnetic shielding effect of the key area is further enhanced, especially when the sensitive elements are located on the surface of the circuit board, the element shielding cover can provide additional protection, finally the outer shielding cover can be installed according to the requirement of the whole circuit board, so that the circuit board has a multilayer electromagnetic shielding structure, the electromagnetic shielding structure not only enhances the electromagnetic shielding performance, but also improves the applicability of the whole circuit board, so that the circuit board is applicable to various environments requiring high electromagnetic shielding performance, such as communication equipment, computers, medical equipment and the like, moreover, the electromagnetic interference reduces the quality of signals on the circuit board, causes signal distortion and noise increase and the like, data errors and communication faults are reduced under long-term use, and the reliability and stability of equipment use are ensured.

[0017] 2. The utility model provides an element shielding cover, a side sealing strip, a damping telescopic spring, a long strip contact, a support frame, a horizontal rack rod and heat dissipation fins are arranged, when the circuit board is used, the element shielding cover is installed on the outside of the sensitive elements, and the side sealing strip, the damping telescopic spring and the long strip contact are arranged below the element shielding cover, the side sealing strip is attached on the electromagnetic shielding layer together with the element shielding cover on the two sides of the element shielding cover to reduce the gap when shielding the two sides, after the element shielding cover is installed on the electromagnetic shielding layer, the damping telescopic spring presses the long strip contact, so that the long strip contact can not only close the shielding gap in front and back, but also can ensure that it can stably contact the contact on the circuit board, and after the electromagnetic shielding structure is installed on the circuit board, the heat dissipation area is increased through the multiple heat dissipation fins, which is helpful to quickly dissipate the heat generated by the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the sensitive element structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the element shield structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the horizontal rack structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the outer shield structure of the utility model.

[0024] Explanation of reference signs:

[0025] 1, circuit board main body; 2, electromagnetic shielding layer; 3, outer mounting frame; 4, mounting groove; 5, sensitive element; 6, element pin; 7, threaded hole; 8, threaded rod; 9, butt joint block; 10, butt joint groove; 11, inner embedded block; 12, element shield; 13, side sealing strip; 14, damping expansion spring; 15, long strip contact; 16, support frame; 17, horizontal rack; 18, heat dissipation fin; 19, fastening bolt; 20, outer shield. DETAILED DESCRIPTION

[0026] In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model will be further described in detail in combination with the drawings.

[0027] The utility model provides a circuit board with electromagnetic shielding structure as shown in Figures 1-5

[0028] The electromagnetic shielding layer 2 is arranged outside the circuit board main body 1, is used for enhancing the electromagnetic shielding capacity of the circuit board itself, and the outer two sides of the electromagnetic shielding layer 2 are fixedly installed with outer mounting frames 3, the outer mounting frames 3 are provided with mounting grooves 4, the upper portion of the electromagnetic shielding layer 2 is fixedly installed with sensitive elements 5, and the bottom of the electromagnetic shielding layer 2 is fixedly installed with element pins 6.

[0029] ​Threaded hole 7 is arranged above the electromagnetic shielding layer 2, used for connecting the mounting threaded rod 8, and the top end of the threaded rod 8 is fixedly installed with the butt joint block 9, the butt joint groove 10 is arranged above the butt joint block 9, the inner embedded block 11 is movably connected inside the butt joint groove 10, the element shielding cover 12 is fixedly installed above the inner embedded block 11, the side sealing strip 13 is fixedly installed on both sides of the element shielding cover 12, the damping telescopic spring 14 is fixedly installed at the bottom of the element shielding cover 12, the long strip contact 15 is fixedly installed at the bottom end of the damping telescopic spring 14, the fastening bolt 19 penetrates through the upper part of the outer mounting frame 3, the outer shielding cover 20 is movably connected with the upper end of the fastening bolt 19, the upper and lower two layers of electromagnetic shielding layers 2 effectively block electromagnetic wave interference from different directions, protect the circuit board and the sensitive element 5 from the invasion of external electromagnetic waves, then according to the use requirement of the sensitive element 5, the butt joint block 9 is installed outside the sensitive element 5 through the threaded hole 7 and the threaded rod 8, and then the element shielding cover 12 is fitted through the butt joint groove 10 and the inner embedded block 11, so as to further enhance the electromagnetic shielding effect of the key area.

[0030] As shown in Figure 1 , Figure 2 and Figure 3 , the electromagnetic shielding layer 2 is fixedly connected with the circuit board body 1, the butt joint block 9 is threadedly connected with the electromagnetic shielding layer 2, the upper and lower two layers of electromagnetic shielding layers 2 effectively block electromagnetic wave interference from different directions, protect the circuit board and the sensitive element 5 from the invasion of external electromagnetic waves, the inner embedded block 11 fixedly installed on the bottom plate of the element shielding cover 12 is clamped and connected with the butt joint groove 10 arranged above the butt joint block 9, the inner embedded block 11 is used in cooperation with the butt joint groove 10, the butt joint block 9 is installed outside the sensitive element 5 through the threaded hole 7 and the threaded rod 8, and then the element shielding cover 12 is fitted through the butt joint groove 10 and the inner embedded block 11, so as to further enhance the electromagnetic shielding effect of the key area.

[0031] As shown in Figure 1 , Figure 4 and Figure 5As shown, the number of damping telescopic springs 14 is set to be multiple, and the multiple damping telescopic springs 14 are distributed at equal intervals on the long strip contact 15. After the element shielding cover 12 is installed on the electromagnetic shielding layer 2, the damping telescopic spring 14 presses the long strip contact 15, so that the long strip contact 15 can not only close the shielding gap in front and back, but also ensure that it can stably contact the contact on the circuit board. The electromagnetic shielding layer 2 is screw-connected with a support frame 16, the inside of the support frame 16 is fixedly installed with a horizontal rack rod 17, and the outside of the horizontal rack rod 17 is fixedly installed with heat dissipation fins 18. After the electromagnetic shielding structure is installed on the circuit board, the heat dissipation area can be increased through multiple groups of heat dissipation fins 18, which helps to quickly dissipate the heat generated by the circuit board. The number of heat dissipation fins 18 is set to be multiple, and the multiple heat dissipation fins 18 are distributed at equal intervals on the horizontal rack rod 17. The structure of the heat dissipation fin 18 is simple and easy to operate, and the maintenance personnel can replace it in time when it fails, without affecting the normal use of the device.

[0032] The utility model discloses a circuit board with electromagnetic shielding structure, which comprises a circuit board main body, an external mounting frame and an external mounting groove, wherein the circuit board main body is provided with an electromagnetic shielding layer, and the external mounting frame is provided with an external mounting groove.

[0033] The utility model discloses a circuit board with electromagnetic shielding structure, which comprises a circuit board main body, an external mounting frame and an external mounting groove, wherein the circuit board main body is provided with an electromagnetic shielding layer, and the external mounting frame is provided with an external mounting groove. The above only describes some exemplary embodiments of the utility model in a manner of illustration, without doubt, for ordinary skilled person in the art, under the condition of not deviating from the spirit and scope of the utility model, can modify the described embodiment with various different ways. Therefore, the above drawing and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A circuit board having an electromagnetic shield structure, characterized by: The utility model relates to a circuit board body (1) for the main body of device component use Electromagnetic shield layer (2) set up in the outside of circuit board body (1) is used for enhancing the electromagnetic shield ability of circuit board itself, and the outside both sides of electromagnetic shield layer (2) are fixedly installed with outer mounting bracket (3), the outside of outer mounting bracket (3) is opened with mounting groove (4), the top of electromagnetic shield layer (2) is fixedly installed with sensitive element (5), the bottom of electromagnetic shield layer (2) is fixedly installed with element pin foot (6), Threaded hole (7) is set up in the top of electromagnetic shield layer (2) for connecting installation threaded rod (8), and the top of threaded rod (8) is fixedly installed with butt joint block (9), the top of butt joint block (9) is opened with butt joint groove (10), the inside of butt joint groove (10) is movably connected with inner embedding block (11), the top of inner embedding block (11) is fixedly installed with element shield cover (12), the both sides of element shield cover (12) are fixedly installed with side seal strip (13), the bottom of element shield cover (12) is fixedly installed with damping telescopic spring (14), the bottom of damping telescopic spring (14) is fixedly installed with long strip contact (15), the top of outer mounting bracket (3) is penetrated with fastening bolt (19), the top of fastening bolt (19) is movably connected with outer shield cover (20). The electromagnetic shield layer (2) is fixedly connected with the circuit board body (1), the butt joint block (9) is threadedly connected with the electromagnetic shield layer (2).

2. The circuit board having an electromagnetic shielding structure according to claim 1, wherein: The inner embedding block (11) fixedly installed on the bottom plate of the element shield cover (12) is clampedly connected with the butt joint groove (10) opened in the top of the butt joint block (9), and the inner embedding block (11) is used in cooperation with the butt joint groove (10).

3. The circuit board having an electromagnetic shielding structure according to claim 1, wherein: The damping telescopic springs (14) are arranged in multiple, and the multiple damping telescopic springs (14) are distributed at equal intervals on the long strip contact (15).

4. The circuit board having an electromagnetic shielding structure according to claim 1, wherein: The support frame (16) is threadedly connected on the top of the electromagnetic shield layer (2), the horizontal rack rod (17) is fixedly installed in the inside of the support frame (16), and the heat dissipation fins (18) are fixedly installed on the outside of the horizontal rack rod (17).

5. The circuit board having an electromagnetic shielding structure according to claim 1, wherein: The heat dissipation fins (18) are arranged in multiple, and the multiple heat dissipation fins (18) are distributed at equal intervals on the horizontal rack rod (17).

6. The circuit board having an electromagnetic shielding structure according to claim 5, wherein: ​

Images