Dustproof heat dissipation shell structure for waveguide type fixed attenuator

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a dustproof heat dissipation shell structure for a waveguide type fixed attenuator, which comprises a shell, two movable plates are symmetrically clamped and fixed on the front and back of the shell, a clamping mechanism is arranged between the shell and the movable plates, and a plurality of heat dissipation fans are fixed on the upper surface of the shell at equal intervals. An access port and an input port are fixed to the two sides of the shell correspondingly, two pairs of heat dissipation ports are symmetrically formed in the two sides of the interior of the movable plate, and two limiting plates are symmetrically fixed to the positions, corresponding to the clamping mechanisms, of the inner side of the movable plate; according to the utility model, the movable plate can be quickly disassembled by utilizing the clamping mechanism, so that the fixed attenuator in the shell can be conveniently maintained, accumulated dust possibly existing in the shell can be conveniently cleaned, the opening and closing state of the heat dissipation port can be controlled through the dustproof assembly, and the heat dissipation port can be conveniently opened and closed in a special environment. And the dustproof baffle can be controlled by the dustproof assembly to shield the heat dissipation opening, so that a tight dustproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed attenuator auxiliary equipment, in particular to a dustproof and heat-dissipating shell structure for a waveguide type fixed attenuator. Background Art

[0002] A fixed attenuator is an electronic component that provides attenuation and is widely used in electronic equipment. Its main purpose is to adjust the size of the signal in the circuit. In the comparison method measurement circuit, it can be used to directly read the attenuation value of the network under test; to improve impedance matching, if some circuits require a relatively stable load impedance, a fixed attenuator can be inserted between this circuit and the actual load impedance to buffer impedance changes; the fixed attenuator itself generates a certain amount of heat during operation. If it is not cooled and dissipated in time, it will also interfere with the sensitivity and shorten the service life of the filter housing and internal components. Therefore, there are strict requirements for its housing.

[0003] However, the heat dissipation and dustproof housing of the fixed attenuator in the prior art is mostly an integrated structure, which is difficult to disassemble quickly, inconvenient to clean the inside, and inconvenient to maintain the fixed attenuator. In addition, the heat dissipation openings of most housings cannot be controlled to open and close, resulting in dust easily entering in special environments.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a dustproof and heat dissipation shell structure for a waveguide type fixed attenuator. The movable plate can be quickly disassembled by utilizing a snap-fit ​​mechanism, thereby facilitating the maintenance of the fixed attenuator inside the shell and facilitating the cleaning of dust that may exist inside the shell. The opening and closing state of the heat dissipation port can be controlled by the dustproof component. In special environments, the dustproof baffle can be controlled by the dustproof component to shield the heat dissipation port, thereby forming a strict dustproof effect to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dustproof and heat-dissipating shell structure for a waveguide type fixed attenuator, comprising a shell, two movable plates are symmetrically clamped and fixed on the front and rear of the shell, a clamping mechanism is installed between the shell and the movable plate, a plurality of cooling fans are equidistantly fixed on the upper surface of the shell, and an access port and an input port are respectively fixed on both sides of the shell, two pairs of heat dissipation ports are symmetrically opened on both sides of the interior of the movable plate, and two limit plates are symmetrically fixed on the inner side of the movable plate at the position corresponding to the clamping mechanism, a dustproof net is slidably connected to the interior of the limit plate, and a dustproof component is installed at the position of the interior of the movable plate corresponding to the heat dissipation port.

[0007] Furthermore, the locking mechanism includes a rotating disk rotatably connected to the inside of the movable plate, two arc-shaped grooves are symmetrically provided inside the rotating disk, a guide slider is slidably connected inside the arc-shaped groove, one end of the guide slider passes through and extends to the outside of the movable plate where a clamping block is fixed, a fixed block is fixed at a position corresponding to the clamping block on the side of the movable plate, the clamping block is slidably connected inside the fixed block, and clamping grooves are provided at the upper and lower ends of the shell at positions corresponding to the clamping blocks.

[0008] Furthermore, a connecting disk is inserted and connected inside the rotating disk, and one end of the connecting disk passes through and extends to the outside of the movable plate where a knob is fixed.

[0009] Furthermore, the dustproof assembly includes two dustproof baffles symmetrically slidably connected to the inside of the movable plate, a through groove is opened inside the dustproof baffle at the position corresponding to the heat dissipation port, and a plurality of first springs are equidistantly fixed on one side of the dustproof baffle inside the movable plate.

[0010] Furthermore, two abutments are symmetrically fixed on the outer side of the connecting disk at positions corresponding to the dust baffle, and a plurality of second protrusions are equidistantly slidably connected to the outer layer of the bottom end of the connecting disk, one end of the second protrusion passes through and extends to the inside of the connecting disk where a second spring is fixed, a plurality of first protrusions are equidistantly fixed inside the rotating disk, and the interior of the rotating disk is divided into a plurality of grooves matched with the second protrusions by the first protrusions.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. The utility model is provided with a locking mechanism, which drives the rotating disk to rotate by the knob and the connecting disk, and drives the arc-shaped slide groove to rotate by the rotation of the rotating disk, and the arc-shaped slide groove drives the card block to slide inside the fixed block, so as to control the state of the card block and the card groove, which is convenient for cleaning the inside of the shell, and at the same time, it is convenient for the maintenance of the fixed attenuator, and it is more convenient to use;

[0013] 2. During daily operation, the utility model forms air convection through the heat dissipation fan and the heat dissipation port opened inside the movable plate, thereby forming a good heat dissipation effect on the inside of the shell, and at the same time, cooperates with the dustproof net to effectively filter the dust. A dustproof component is arranged inside the movable plate. Under normal conditions, the heat dissipation port inside the movable plate is in a smooth state. When the environment requires, the connection plate can be rotated by rotating the knob, and the rotation of the connection plate drives the stop block to rotate, thereby driving the dust baffle to move. At this time, the notch inside the dust baffle is staggered with the heat dissipation port, forming a strict dustproof effect.

[0014] In summary, the movable plate can be quickly disassembled using the snap-fit ​​mechanism, which facilitates the maintenance of the fixed attenuator inside the shell and the cleaning of dust that may exist inside the shell. The opening and closing state of the heat dissipation port can be controlled by the dustproof component. In special environments, the dustproof baffle can be controlled by the dustproof component to cover the heat dissipation port, thereby forming a strict dustproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the inner side of the movable plate of the utility model;

[0017] Figure 3 It is a top view of the combination of the movable plate and the dustproof net of the utility model;

[0018] Figure 4 It is a side view of the interior of the movable plate of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the clamping mechanism of the utility model;

[0020] Figure 6 It is a front view of the interior of the movable plate of the utility model;

[0021] Figure 7 It is a schematic structural diagram of the dustproof component of the utility model.

[0022] Figure numerals: 1. housing; 2. cooling fan; 3. access port; 4. heat dissipation port; 5. locking mechanism; 6. movable plate; 7. input port; 8. limit plate; 9. fixed block; 10. clamping block; 11. dust screen; 12. clamping slot; 13. dustproof assembly; 14. knob; 15. rotating disk; 16. arc-shaped slide groove; 17. stop block; 18. connecting disk; 19. guide slider; 20. through groove; 21. dust baffle; 22. first spring; 23. first protrusion; 24. second spring; 25. second protrusion; 26. notch. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1: This embodiment aims to address the problem that the heat dissipation and dustproof housing of the fixed attenuator in the prior art is mostly an integrated structure, which is difficult to disassemble quickly, inconvenient to clean the inside, and inconvenient to maintain the fixed attenuator.

[0025] like Figure 1-5 As shown, a dustproof and heat dissipation shell structure for a waveguide type fixed attenuator comprises a shell 1, two movable plates 6 are symmetrically clamped and fixed at the front and rear of the shell 1, a clamping mechanism 5 is installed between the shell 1 and the movable plate 6, the clamping mechanism 5 comprises a rotating disk 15 rotatably connected to the inside of the movable plate 6, two arc-shaped slide grooves 16 are symmetrically provided inside the rotating disk 15, one end of the arc-shaped slide groove 16 is close to the outer position of the rotating disk 15, and the other end of the arc-shaped slide groove 16 is close to the center position of the rotating disk 15, so as to form a position effect, a guide slider 19 is slidably connected inside the arc-shaped slide groove 16, and the guide slider 19 is driven to move by the rotation of the arc-shaped slide groove 16, and one end of the guide slider 19 penetrates and extends to the outside of the movable plate 6 where a card block 10 is fixed, thereby driving the card block 10 to move until it moves out of the card slot 12;

[0026] A fixed block 9 is fixed on the side of the movable plate 6 at the position corresponding to the card block 10, and the card block 10 is slidably connected inside the fixed block 9. Card slots 12 are provided at the upper and lower ends of the interior of the shell 1 at the positions corresponding to the card block 10. After the card block 10 is moved out of the card slot 12, the movable plate 6 can be removed. A connecting disk 18 is inserted and connected to the inside of the rotating disk 15, and one end of the connecting disk 18 penetrates and extends to the outside of the movable plate 6 to be fixed with a knob 14. A number of cooling fans 2 are equidistantly fixed on the upper surface of the shell 1, and an access port 3 and an input port 7 are respectively fixed on both sides of the shell 1.

[0027] When the movable plate 6 needs to be disassembled, rotating the knob 14 drives the connecting disk 18 to rotate, the connecting disk 18 drives the rotating disk 15 to rotate, the rotating disk 15 drives the arc groove 16 to rotate, and the arc groove 16 drives the guide slider 19 to move by rotating, and then drives the block 10 to move until it moves out of the slot 12, and then the movable plate 6 can be removed, thereby facilitating the cleaning of the inside of the shell 1 and the maintenance of the fixed attenuator.

[0028] Embodiment 2: This embodiment aims to address the problem that the heat dissipation port of the heat dissipation and dustproof housing of the fixed attenuator in the prior art cannot control the opening and closing state, resulting in dust easily entering in special environments.

[0029] like Figure 6-7As shown, the embodiment is a dustproof heat dissipation housing structure for a waveguide type fixed attenuator, and two pairs of heat dissipation ports 4 are symmetrically opened on both sides of the inner side of the movable plate 6, and two limit plates 8 are symmetrically fixed at the positions of the inner side of the movable plate 6 corresponding to the engaging mechanism 5, and a dustproof net 11 is slidably connected to the inner side of the limit plate 8. When the dustproof net 11 needs to be replaced, the dustproof net 11 can be directly pulled out for replacement, which is simple and quick, and the dust filtering effect of the dustproof net 11 is guaranteed;

[0030] A dustproof assembly 13 is installed at a position corresponding to the heat dissipation port 4 inside the movable plate 6. The dustproof assembly 13 includes two dustproof baffles 21 symmetrically slidably connected to the inside of the movable plate 6. A through groove 20 is opened at a position corresponding to the heat dissipation port 4 inside the dustproof baffle 21. In a normal state, the dustproof baffle 21 and the through groove 20 are in a coincident state, that is, in a normal state, the heat dissipation port 4 is in a ventilation and heat dissipation state, and a plurality of first springs 22 are equidistantly fixed on one side of the dustproof baffle 21 inside the movable plate 6;

[0031] Two abutments 17 are symmetrically fixed on the outer side of the connecting disk 18 at the position corresponding to the dust baffle 21. The corners of the abutments 17 are in an arc-shaped structure, so that excessive wear or jamming will not occur when the dust baffle 21 is pushed. A plurality of second protrusions 25 are equidistantly slidably connected to the outer layer of the bottom end of the connecting disk 18. One end of the second protrusion 25 penetrates and extends to the inside of the connecting disk 18 where a second spring 24 is fixed. A plurality of first protrusions 23 are equidistantly fixed to the inside of the rotating disk 15, and the inside of the rotating disk 15 is divided into a plurality of notches 26 matched with the second protrusions 25 by the first protrusions 23. When there is no external force interference between the first protrusions 23 and the second protrusions 25, the friction force between the first protrusions 23 and the second protrusions 25 cooperates with the elastic coefficient of the second spring 24 to meet the condition that the connecting disk 18 drives the rotating disk 15 to rotate, and the situation of being unable to rotate will not occur.

[0032] When the heat dissipation port 4 needs to be closed, the connection disk 18 is driven to rotate by continuously rotating the knob 14. At this time, because the block 10 and the slot 12 are in a locked and immovable state, the guide slider 19 and the arc-shaped slot 16 cannot move. That is, at this time, the rotating connection disk 18 is interfered, and the connection disk 18 drives the first protrusion 23 to rotate. Because the first protrusion 23 cannot move, the second protrusion 25 is squeezed by the second protrusion 25 and moves toward the inside of the connection disk 18, and cooperates with the reset effect of the second spring 24, so that this cycle is repeated, thereby forming an effect of rotation of the connection disk 18. The rotation of the connection disk 18 drives the resistance block 17 to rotate to form a resistance effect on the dust baffle 21, and the dust baffle 21 moves. At this time, the through slot 20 is misaligned with the heat dissipation port 4, thereby forming a shielding effect on the heat dissipation port 4, which is used for a strict dustproof effect in special environments.

[0033] The working process and principle of the utility model are as follows:

[0034] Step 1: When the movable plate 6 needs to be disassembled, the knob 14 is rotated to drive the connecting plate 18 to rotate, the connecting plate 18 rotates to drive the rotating plate 15 to rotate, the rotating plate 15 rotates to drive the arc-shaped slide groove 16 to rotate, and the arc-shaped slide groove 16 rotates to drive the guide slider 19 to move, and then drive the block 10 to move until it moves out of the slot 12, and then the movable plate 6 can be removed, thereby facilitating the cleaning of the inside of the housing 1 and the maintenance of the fixed attenuator;

[0035] Step 2: When the heat dissipation port 4 needs to be closed, the connection disk 18 is driven to rotate by continuously rotating the knob 14. At this time, because the block 10 and the slot 12 are in a locked and immovable state, the guide slider 19 and the arc-shaped slot 16 cannot move. That is, at this time, the rotating connection disk 18 is interfered, and the connection disk 18 drives the first protrusion 23 to rotate. Because the first protrusion 23 cannot move, the second protrusion 25 is squeezed by the second protrusion 25 and moves toward the inside of the connection disk 18, and cooperates with the reset effect of the second spring 24, so that the cycle is repeated, thereby forming the effect of rotation of the connection disk 18. The rotation of the connection disk 18 drives the resistance block 17 to rotate to form a resistance effect on the dust baffle 21, and the dust baffle 21 moves. At this time, the through slot 20 is misaligned with the heat dissipation port 4, thereby forming a shielding effect on the heat dissipation port 4, which is used for a strict dustproof effect in special environments.

[0036] In summary, the movable plate 6 can be quickly disassembled using the locking mechanism 5, which is convenient for cleaning the inside of the shell 1 and maintaining the fixed attenuator. In combination with the dustproof component 13, the state of the heat dissipation port 4 can be adjusted as needed to suit working in different environments.

[0037] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dustproof and heat dissipating housing structure for a waveguide type fixed attenuator, comprising a housing (1), characterized in that: Two movable plates (6) are symmetrically fastened to the front and rear of the shell (1); a fastening mechanism (5) is installed between the shell (1) and the movable plate (6); a plurality of cooling fans (2) are equidistantly fixed to the upper surface of the shell (1); an access port (3) and an input port (7) are respectively fixed to the two sides of the shell (1); two pairs of cooling ports (4) are symmetrically opened on both sides of the inside of the movable plate (6); two limiting plates (8) are symmetrically fixed to the inner side of the movable plate (6) at positions corresponding to the fastening mechanism (5); a dustproof net (11) is slidably connected to the inside of the limiting plate (8); and a dustproof component (13) is installed at a position corresponding to the cooling port (4) inside the movable plate (6).

2. The dustproof and heat dissipation housing structure for a waveguide type fixed attenuator according to claim 1, characterized in that: The locking mechanism (5) comprises a rotating disk (15) rotatably connected to the inside of the movable plate (6); two arc-shaped sliding grooves (16) are symmetrically provided inside the rotating disk (15); a guide slider (19) is slidably connected inside the arc-shaped sliding groove (16); one end of the guide slider (19) penetrates and extends to the outside of the movable plate (6) and is fixed with a clamping block (10); a fixed block (9) is fixed on the side of the movable plate (6) at a position corresponding to the clamping block (10); the clamping block (10) is slidably connected inside the fixed block (9); and clamping grooves (12) are provided at the upper and lower ends of the inside of the shell (1) at positions corresponding to the clamping block (10).

3. The dustproof and heat dissipation housing structure for a waveguide type fixed attenuator according to claim 2, characterized in that: A connecting disk (18) is inserted and connected inside the rotating disk (15), and one end of the connecting disk (18) penetrates and extends to the outside of the movable plate (6) where a knob (14) is fixed.

4. The dustproof and heat dissipation housing structure for a waveguide type fixed attenuator according to claim 1, characterized in that: The dustproof assembly (13) comprises two dustproof baffles (21) symmetrically slidably connected to the inside of the movable plate (6); a through groove (20) is provided inside the dustproof baffle (21) at a position corresponding to the heat dissipation port (4); and a plurality of first springs (22) are equidistantly fixed on one side of the dustproof baffle (21) inside the movable plate (6).

5. The dustproof and heat dissipation housing structure for a waveguide type fixed attenuator according to claim 3, characterized in that: Two abutments (17) are symmetrically fixed at positions corresponding to the dust baffle (21) on the outer side of the connecting disk (18), and a plurality of second protrusions (25) are equidistantly slidably connected to the outer layer of the bottom end of the connecting disk (18), one end of the second protrusion (25) penetrates and extends to the inside of the connecting disk (18) where a second spring (24) is fixed, and a plurality of first protrusions (23) are equidistantly fixed inside the rotating disk (15), and the inside of the rotating disk (15) is divided into a plurality of notches (26) matched with the second protrusions (25) by the first protrusions (23).

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