CN217770073U

CN217770073U - Anti-interference radio frequency device

Info

Publication number: CN217770073U
Application number: CN202221578172.3U
Authority: CN
Inventors: 李化龙
Original assignee: Xi'an Langyuan Hongsheng Electronic Technology Co ltd
Current assignee: Xi'an Langyuan Hongsheng Electronic Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-08
Anticipated expiration: 2032-06-22

Abstract

The application relates to an anti-interference radio frequency device, which comprises a mounting shell, a circuit board arranged in an inner cavity of the mounting shell and a fixing component, wherein the circuit board is arranged in the inner cavity of the mounting shell; the inner cavity of the mounting shell is provided with a slot for inserting the circuit board, the fixing assembly comprises a pressing rod, a pressing strip and a positioning piece, the pressing rod is perpendicular to the circuit board, the inner wall of the slot is provided with a sliding groove for the pressing rod to slide, and the pressing strip is parallel to the circuit board and arranged at one end of the pressing rod extending into the slot; the positioning piece can push the pressing strip to tightly support the circuit board on the inner wall of the slot. This application has the circuit board that can fix different thickness on the installation shell, and the assembly is more stable.

Description

Anti-interference radio frequency device

Technical Field

The application relates to the technical field of communication, in particular to an anti-interference radio frequency device.

Background

The circuit board comprises a PCB (hard board), an FPC (flexible printed circuit) and a rigid-flexible combined board, and comprises a single-layer board, a double-layer board and a multilayer board according to the layer number, and a printed circuit and various parts are integrated on the circuit board so as to achieve circuit miniaturization and visualization, and play an important role in batch production of fixed circuits and optimization of electrical appliance layout. The radio frequency circuit board is a module which is provided with a radio frequency module in the wiring of the circuit board, namely, a module which needs to transmit larger signals.

At present, when an anti-interference radio frequency module is installed, four corners or a circle of the anti-interference radio frequency module are directly fixed by screws; or, for the radio frequency device with the cavity structure, the slot is formed in the cavity, and the circuit board is inserted into the symmetrical slot in the cavity to mount and assemble the circuit board.

Aiming at the related technologies, the thickness of the circuit board is thin, the installation shell of the circuit board is usually formed by injection molding or pultrusion through a mold, and the slot with the thickness within 1mm is difficult to be manufactured through the pultrusion process, so that the circuit board cannot be suitable for the circuit boards with various thicknesses, and meanwhile, the circuit board can shake and is not stable enough when extending into the slot.

SUMMERY OF THE UTILITY MODEL

In order to fix the circuit board conveniently, the application provides an anti-interference radio frequency device.

The anti-interference radio frequency device provided by the application adopts the following technical scheme:

an anti-interference radio frequency device comprises a mounting shell, a circuit board arranged in an inner cavity of the mounting shell and a fixing component; the fixing assembly comprises a pressing rod, a pressing strip and a positioning piece, the pressing rod is perpendicular to the circuit board, a sliding groove for the pressing rod to slide is formed in the inner wall of the slot, and the pressing strip is parallel to the circuit board and arranged at one end, extending into the slot, of the pressing rod; the positioning piece can push the pressing strip to tightly support the circuit board on the inner wall of the slot.

By adopting the technical scheme, when the circuit board is installed, the peripheral side of the circuit board is inserted into the slot in the inner cavity of the installation shell, then the positioning piece pushes the pressing rod to slide along the sliding groove, so that the pressing bar is pushed to move, and the circuit board is clamped between the pressing bar and the inner wall of the slot, so that the circuit board is fixed; the arranged slot can limit the circuit board by inserting the circuit board, and the arranged pressing rod pressing bar and the positioning piece can fix the circuit board in the slot, so that the swinging of the circuit board in the slot is reduced, and the mounting stability of the circuit board is improved; meanwhile, the method is suitable for assembling circuit boards with different thicknesses, and the applicability is high.

Optionally, a spring is sleeved on the pressure lever, and the spring is arranged in the sliding groove and is always in a compressed state.

Through adopting above-mentioned technical scheme, the spring that sets up for layering and depression bar overcome spring force and carry out the centre gripping of circuit board, make the motion of layering and depression bar more stable, and when the circuit board inserted the slot, the layering moved to keeping away from slot one side under the spring force effect simultaneously, and the space of being convenient for circuit board male is left automatically, and the circuit board of being convenient for inserts the slot prepositioning.

Optionally, the inner wall of the slot is provided with an elastic cushion layer, and the elastic cushion layer exceeds the slot opening and tightly abuts against the inner wall of the installation shell at the slot opening.

Through adopting above-mentioned technical scheme, the elastic cushion who sets up can contact and tightly support on the circuit board with the circuit board, increases on the one hand and the circuit board between frictional force, reduces the skew of circuit board, improves the fixed stability of circuit board, and on the other hand and circuit board contact reduce circuit board and installation shell contact and produce wearing and tearing, the last wiring of protection circuit board.

Optionally, an anti-slip cushion layer is arranged on one side, away from the pressing rod, of the pressing strip.

Through adopting above-mentioned technical scheme, the anti-skidding bed course of setting can cooperate with the elastic cushion layer for centre gripping circuit board both sides all separate with the slot inner wall, protect the circuit board, reduce vibrations to the influence of circuit board, improve its shockproof effect.

Optionally, the setting element includes connecting rod and clamp plate, connecting rod one end with the depression bar is kept away from layering one end and is connected, and the other end stretches out the installation shell and with the clamp plate is articulated, the articulated shaft of clamp plate with the depression bar is parallel, set up on the installation shell outer wall and inlay and establish initial groove and the spacing groove of clamp plate.

Through adopting above-mentioned technical scheme, the connecting rod and the clamp plate that set up make the clamp plate keep away from initial groove and stretch out the installation shell outer wall through rotating the clamp plate, stir the clamp plate again and drive connecting rod and depression bar and slide along the spout, and then drive the layering and press and hold on the circuit board, rotate the clamp plate again and establish at the spacing inslot until the clamp plate embedding and card for the layering position is fixed, makes the fixed state of circuit board keep.

Optionally, a torsional spring is arranged on the hinged shaft of the pressing plate, and the torsional spring can enable the pressing plate to rotate and tightly abut against the inner walls of the initial groove and the limiting groove.

Through adopting above-mentioned technical scheme, the torsional spring of setting, when not applying force, the torsion of torsional spring drives the clamp plate and rotates, imbeds in initial groove or the spacing groove automatically, makes the mounting panel surface level and smooth on the one hand, does not have the arch, hides the clamp plate, and on the other hand is convenient for the clamp plate card at the spacing groove, improves the fixed reliability of layering.

Optionally, the positioning element further comprises a wedge block and an adjusting screw, the wedge block is slidably arranged in the limiting groove, the top wall of the pressing plate is arranged to be an inclined surface corresponding to the wedge block, one end, parallel to the pressing bar, of the adjusting screw is rotatably connected to the mounting shell, and the other end of the adjusting screw is in threaded connection with the wedge block.

Through adopting above-mentioned technical scheme, the wedge piece and the adjusting screw that set up, the wedge piece cooperates with the clamp plate, rotate adjusting screw and rotate for the wedge piece slides along the spacing groove, and then drives the briquetting that cooperates with it and slides along spout length direction, thereby adjusts the layering and to the dynamics that compresses tightly of circuit board, with the fixed of the circuit board that is applicable to different thickness.

Optionally, the adjusting screw is coaxially fixed with an adjusting wheel, a groove embedded with the adjusting wheel is formed in the outer wall of the mounting shell, and the adjusting wheel exceeds the outer wall of the mounting shell.

Through adopting above-mentioned technical scheme, the regulating wheel that sets up can drive adjusting screw through rotating the regulating wheel and rotate, and then realizes the regulation of briquetting, the operation of being convenient for and application of force through the slip of carving the piece.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arranged slot can be used for limiting the circuit board by inserting the circuit board, and the arranged pressing rod pressing strip and the positioning piece can be used for fixing the circuit board in the slot, so that the swinging of the circuit board in the slot is reduced, and the mounting stability of the circuit board is improved; meanwhile, the method is suitable for assembling circuit boards with different thicknesses, and the applicability is high;

2. the connecting rod and the pressing plate are arranged, the pressing plate is far away from the initial groove and extends out of the outer wall of the mounting shell by rotating the pressing plate, then the pressing plate is stirred to drive the connecting rod and the pressing rod to slide along the sliding groove, further the pressing strip is driven to be pressed and held on the circuit board, and then the pressing plate is rotated until the pressing plate is embedded into and clamped in the limiting groove to fix the position of the pressing strip, so that the fixed state of the circuit board can be maintained;

3. the wedge block and the adjusting screw are arranged, the wedge block is matched with the pressing plate, the adjusting screw is rotated to enable the wedge block to slide along the limiting groove, the pressing block matched with the wedge block is driven to slide along the length direction of the sliding groove, and therefore the pressing force of the pressing bar on the circuit board is adjusted to be suitable for fixing the circuit boards with different thicknesses.

Drawings

Fig. 1 is a schematic overall structure diagram of an anti-interference radio frequency device according to an embodiment of the present application.

Fig. 2 is another mounting of the circuit board.

Fig. 3 isbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A in fig. 1.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Description of reference numerals: 1. mounting a shell; 11. a slot; 12. a chute; 13. a vertical slot; 14. an initial groove; 15. a limiting groove; 16. a groove; 2. a circuit board; 3. a fixing assembly; 31. a pressure lever; 32. layering; 33. a spring; 34. an elastic cushion layer; 35. an anti-slip cushion layer; 36. a positioning member; 361. a connecting rod; 362. a cross bar; 363. pressing a plate; 364. a torsion spring; 365. a wedge-shaped block; 366. adjusting the screw rod; 367. an adjustment wheel; 368. and (4) anti-skid lines.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an anti-interference radio frequency device. Referring to fig. 1, the anti-interference radio frequency device mounting shell 1, the circuit board 2 and the fixing component 3 are arranged in the inner cavity of the mounting shell 1, and the circuit board 2 is mounted in the inner cavity of the mounting shell 1 through the fixing component 3. A low-noise discharge circuit, an intermediate frequency circuit and a local oscillator circuit are integrated on the circuit board 2 and are arranged in a partition mode, strong electric signals and weak point signals are separated, a digital signal circuit and an analog signal circuit are separated, and circuits with the same energy supply are arranged in the same area range, so that the area of a signal loop is reduced; the filter networks of all the circuits are connected nearby, so that the radiation can be reduced, the probability of interference can be reduced, and the anti-interference capability of the circuit is improved.

Referring to fig. 1 and 2, the inner cavity of the mounting shell 1 is provided with a slot 11 for inserting the circuit board 2, the mounting shell 1 can be a rectangular hollow shell, and the two slots 11 are symmetrically arranged in parallel and symmetrically and are suitable for extending the circuit board 2 into the inner cavity of the mounting shell 1 for mounting; meanwhile, the mounting shell 1 can also be provided with a plurality of L-shaped corner shells, and the corners of the circuit board 2 extend into the slots 11 of the corner shells for mounting. The mounting shell 1 is fixedly mounted through bolts so as to fix the radio frequency device.

Referring to fig. 3, the fixing assembly 3 includes a pressing bar 31, a pressing bar 32, a spring 33, an elastic cushion 34, an anti-slip cushion 35, and a positioning member 36. The pressing rods 31 are provided with a plurality of grooves which are distributed near the length direction of the slot 11, the inner wall of the slot 11 is provided with a chute 12 for the pressing rods 31 to slide, the length direction of the chute 12 is vertical to the circuit board 2, and the pressing rods 31 are vertical to the circuit board 2 and are coaxially connected in the chute 12 in a sliding manner; the pressing bar 32 is parallel to the length direction of the circuit board 2 and the chute 12 and is welded at one end of the pressing bar 31 extending into the slot 11; the spring 33 is arranged in the sliding groove 12 and coaxially sleeved on the pressure lever 31, one end of the spring 33 is welded on the inner wall of the slot 11, the other end of the spring 33 is welded on the pressure lever 31, the spring 33 is always in a compressed state, and the pressure lever 31 tends to be retracted into the sliding groove 12. The positioning element 36 is disposed at an end of the pressing bar 31 away from the pressing bar 32 and can push the pressing bar 32 to press the circuit board 2 against the inner wall of the slot 11.

Referring to fig. 3, the elastic pad 34 is adhesively fixed on the inner wall of the slot 11, the elastic pad 34 exceeds the notch of the slot 11, and the portion of the elastic pad 34 exceeding the notch of the slot 11 abuts against and is adhesively fixed on the inner wall of the mounting shell 1 at the notch of the slot 11. The antiskid cushion layer 35 is adhered and fixed on one side of the compression bar 32, which is far away from the compression bar 31, and is used for contacting with the circuit board 2. The elastic cushion layer 34 and the anti-slip cushion layer 35 are made of rubber.

Referring to fig. 3 and 4, the positioning member 36 includes a connecting rod, a pressing plate 363, and a torsion spring 364. The connecting rod includes connecting rod 361 and a plurality of horizontal pole 362 that set up in the coplanar, and horizontal pole 362 one end perpendicular to connecting rod 361 is fixed, and the other end is connected with depression bar 31 and is kept away from layering 32 one end, sets up the cavity that supplies the connecting rod motion in the installation shell 1 shell. The outer wall of the installation shell 1 is provided with a vertical groove 13 parallel to the pressure lever 31, an initial groove 14 communicated with the vertical groove 13 and used for embedding the pressure plate 363, and a limiting groove 15, wherein the initial groove 14 and the limiting groove 15 are distributed along the length direction of the vertical groove 13. The vertical groove 13 is communicated with a cavity of the shell of the installation shell 1, one end of the pressure plate 363 is hinged on the connecting rod 361, and a hinged shaft of the pressure plate 363 is parallel to the pressure rod 31; the torsion spring 364 is sleeved on the hinge shaft of the pressing plate 363, one end of the torsion spring is welded on the pressing plate 363, the other end of the torsion spring is welded on the connecting rod 361, and the pressing plate 363 can rotate and tightly abut against the inner walls of the initial groove 14 and the limiting groove 15. When the pressing bar 32 is far away from the circuit board 2, the pressing plate 363 is embedded in the initial groove 14, and when the pressing bar 32 is tightly pressed on the circuit board 2, the pressing plate 363 is embedded in the limiting groove 15 for positioning.

Referring to FIG. 4, the positioning member 36 further includes a wedge 365, an adjustment screw 366, and an adjustment wheel 367. The width of the limiting groove 15 along the length direction of the vertical groove 13 is larger than that of the pressure plate 363, and the top wall of the pressure plate 363 is tightly propped against the inner wall of the top of the limiting groove 15 under the action of the spring 33. The wedge-shaped block 365 is slidably arranged in the limiting groove 15, the sliding direction of the wedge-shaped block 365 is parallel to the connecting rod 361, the top wall of the pressing plate 363 is provided with an inclined surface corresponding to the wedge-shaped block 365, and the inclined surface of the wedge-shaped block 365 is abutted and matched with the inclined surface of the pressing plate 363. The adjusting screw 366 is parallel to the pressing bar 32, one end of the adjusting screw is rotatably connected to the mounting shell 1, and the other end of the adjusting screw penetrates through the wedge 365 and is in threaded connection with the wedge 365. A groove 16 embedded with an adjusting wheel 367 is formed in the outer wall of the installation shell 1, the groove 16 is formed in one side of a limiting groove 15, the adjusting wheel 367 is coaxially welded at one end, far away from the wedge-shaped block 365, of the adjusting screw rod 366, the outer side wall of the adjusting wheel 367 exceeds the outer wall of the installation shell 1, and anti-skidding threads 368 are formed in the outer side wall of the adjusting wheel 367.

The implementation principle of an anti-interference radio frequency device in the embodiment of the application is as follows: when the circuit board 2 is installed, the circuit board 2 installed in the cavity is horizontal and parallel to the slot 11, and is inserted into the slot 11 along the inner cavity of the installation shell 1; if the circuit board 2 is mounted at the four corners, the four corners of the circuit board 2 are respectively inserted into the slots 11 in the corner shell, so as to pre-position the circuit board 2.

The pressing plate 363 is rotated to make the pressing plate 363 far away from the initial slot 14 and extend out of the outer wall of the mounting case 1, then the pressing plate 363 is pressed downwards, the pressing plate 363 drives the connecting rod 361, the cross rod 362 and the pressing rod 31 to slide along the sliding slot 12, and overcomes the elasticity of the spring 33 to drive the pressing strip 32 to move towards the direction of the circuit board 2, until the pressing plate 363 presses the circuit board 2 against the elastic cushion 34 on the inner wall of the slot 11. Then, the pressing plate 363 rotates under the action of the torsion spring 364 until the pressing plate 363 is embedded and clamped in the limiting groove 15, and the position of the pressing bar 32 is fixed, so that the fixed state of the circuit board 2 is maintained.

Under the action of the spring 33, the pressing plate 363 abuts against the inner wall of the top of the limiting groove 15, the adjusting wheel 367 rotates to drive the adjusting screw 366 to rotate, so that the wedge-shaped block 365 slides towards one side close to the vertical groove 13 along the limiting groove 15, the pressing plate 363 is further pushed to continue to press downwards, the force for pressing the anti-slip cushion layer 35 to hold the circuit board 2 is adjusted, or the fixing of the circuit boards 2 with different thicknesses is applicable.

Then, the positioning part 36 pushes the pressing rod 31 to slide along the sliding groove 12, so as to push the pressing strip 32 to move, and the circuit board 2 is clamped between the pressing strip 32 and the inner wall of the slot 11, thereby fixing the circuit board 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an anti-interference radio frequency device, is in including installation shell (1) and setting circuit board (2) of installation shell (1) inner chamber, its characterized in that: also comprises a fixing component (3);

the inner cavity of the mounting shell (1) is provided with a slot (11) for the circuit board (2) to be inserted into,

the fixing assembly (3) comprises a pressing rod (31), a pressing strip (32) and a positioning piece (36), the pressing rod (31) is perpendicular to the circuit board (2), a sliding groove (12) for the pressing rod (31) to slide is formed in the inner wall of the slot (11), the pressing strip (32) is parallel to the circuit board (2) and is arranged at one end, extending into the slot (11), of the pressing rod (31);

the positioning piece (36) can push the pressing strip (32) to tightly support the circuit board (2) on the inner wall of the slot (11).

2. The tamper-resistant radio frequency device of claim 1, wherein: the compression bar (31) is sleeved with a spring (33), and the spring (33) is arranged in the sliding groove (12) and is always in a compression state.

3. The tamper-resistant radio frequency device of claim 1, wherein: the inner wall of the slot (11) is provided with an elastic cushion layer (34), and the elastic cushion layer (34) exceeds the notch of the slot (11) and tightly abuts against the inner wall of the installation shell (1) at the notch of the slot (11).

4. The tamper-resistant radio frequency device of claim 3, wherein: and an anti-skid cushion layer (35) is arranged on one side of the pressing bar (32) departing from the pressing bar (31).

5. The tamper-resistant radio frequency device of claim 1, wherein: the positioning piece (36) comprises a connecting rod and a pressing plate (363), one end of the connecting rod is connected with one end, far away from the pressing bar (32), of the pressing bar (31), the other end of the connecting rod extends out of the installation shell (1) and is hinged to the pressing plate (363), a hinged shaft of the pressing plate (363) is parallel to the pressing bar (31), and an initial groove (14) and a limiting groove (15) which are embedded with the pressing plate (363) are formed in the outer wall of the installation shell (1).

6. The tamper-resistant radio frequency device of claim 5, wherein: a torsion spring (364) is arranged on a hinged shaft of the pressure plate (363), and the torsion spring (364) can enable the pressure plate (363) to rotate and tightly abut against the inner walls of the initial groove (14) and the limiting groove (15).

7. The tamper-resistant radio frequency device of claim 5, wherein: the positioning piece (36) further comprises a wedge block (365) and an adjusting screw rod (366), the wedge block (365) is arranged in the limiting groove (15) in a sliding mode, the top wall of the pressing plate (363) is arranged to be an inclined surface corresponding to the wedge block (365), one end, parallel to the pressing strip (32), of the adjusting screw rod (366) is rotatably connected to the mounting shell (1), and the other end of the adjusting screw rod is in threaded connection with the wedge block (365).

8. The tamper-resistant radio frequency device of claim 7, wherein: an adjusting wheel (367) is coaxially fixed on the adjusting screw rod (366), a groove (16) embedded with the adjusting wheel (367) is formed in the outer wall of the installation shell (1), and the adjusting wheel (367) exceeds the outer wall of the installation shell (1).