Electromagnetic shielding waterproof cover device for air inlet and air outlet of electric equipment

Abstract

The utility model relates to an electromagnetic shielding waterproof cover device for an air inlet and an air outlet of electric equipment, which comprises an air port cover, a positioning seat, a waveguide window, a transmission fixing plate and a transmission cover plate which are connected in sequence, an elliptical connecting rod matched with the rotation stopping guide hole penetrates through the rotation stopping guide hole to connect the tuyere cover, the positioning seat and the waveguide window, and a threaded hole is formed in the center of the connecting rod; the universal driving shaft penetrates through the bearing and the waveguide window and penetrates into the connecting rod to be in threaded connection with the threaded hole of the connecting rod, a driven synchronous belt wheel is installed at the other end of the universal driving shaft, a driving synchronous belt wheel is installed at the output shaft end of the stepping motor, and the two belt wheels are in transmission connection through a synchronous belt. The device solves the problem that after the electronic intelligent equipment is sealed, the air port of the equipment cannot be opened manually in the space where the equipment is located, and heat left in the equipment cannot flow out of the equipment quickly and effectively.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic intelligent equipment sealing, and in particular relates to an electromagnetic shielding waterproof cover device for an air inlet and outlet of an electric equipment. Background Art

[0002] In order to prevent a large amount of heat retained in sealed electronic intelligent devices that cannot be dissipated through conduction heat dissipation, causing damage to some key electronic components or circuit protection, leading to electronic equipment failure or malfunction, and causing unnecessary losses, some sealed electronic intelligent devices use fans to bring out the heat retained in the equipment and perform forced heat dissipation to ensure that the equipment can work safely and effectively for a long time.

[0003] The forced heat dissipation of sealed electronic intelligent devices is mostly done manually, that is, the sealing cover at the air outlet is opened to force the heat dissipation of the sealed electronic intelligent device during operation. After the work is completed, the sealing cover is placed at the air outlet to seal the device. The manual forced heat dissipation of sealed electronic intelligent devices is easily limited by space. When the space where the sealed electronic intelligent device is placed is limited or restricted, the sealing cover for manual forced heat dissipation is difficult to open manually or cannot be opened.

[0004] Generally speaking, electronic intelligent devices adopt a sealed design, in addition to being waterproof, dustproof, and salt spray-proof, most of them are mainly for achieving electromagnetic compatibility of the device. After the sealed cover of the device is opened, the inside of the device cannot be electromagnetically sealed, resulting in the device not having electromagnetic compatibility after the waterproof cover is opened. Utility Model Content

[0005] An electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device is characterized in that it includes an air inlet cover, a positioning seat, a waveguide window, a transmission fixing plate and a transmission cover plate which are connected in sequence, and the positioning seat and the transmission fixing plate are both provided with fan-shaped air holes that match the air outlet on the waveguide window; an elliptical anti-rotation guide hole is provided at the center of the back of the waveguide window and the center of the positioning seat, and an elliptical connecting rod matching the anti-rotation guide hole is used to penetrate the anti-rotation guide hole to connect the air inlet cover, the positioning seat and the waveguide window, and the center of the connecting rod is a threaded hole; a micro-stepping motor is fixedly installed on the left side of the waveguide window, and a linkage shaft hole concentric with the anti-rotation guide hole on the back of the waveguide window is provided in the center; the transmission fixing plate includes The left and right side plates, the left side plate is provided with an opening for the stepper motor and its output shaft to pass through, the center of the right side plate is provided with a bearing countersunk hole, the bearing is installed in the bearing countersunk hole, the transmission fixed plate is installed close to the waveguide window, the diameter of the linkage shaft matches the aperture of the threaded hole in the center of the connecting rod and is provided with threads, the linkage shaft passes through the bearing and the waveguide window and penetrates into the connecting rod to be threadedly connected with the threaded hole of the connecting rod, the other end of the linkage shaft is installed with a driven synchronous pulley, the output shaft end of the stepper motor is installed with a driving synchronous pulley, and the driving synchronous pulley and the driven synchronous pulley are connected by a synchronous belt drive; the transmission cover plate is installed on the transmission fixed plate and placed before the driving synchronous pulley and the driven synchronous pulley.

[0006] Furthermore, matching mounting holes are arranged at the four corners of the positioning seat and the waveguide window, and are connected by fasteners passing through the mounting holes.

[0007] Furthermore, a retaining spring groove is provided at the connection between the linkage shaft and the bearing, and a retaining spring is installed in the retaining spring groove to prevent the bearing and the linkage shaft from being disengaged from the original installation position due to matching clearance problems during the transmission process.

[0008] Furthermore, a protrusion is provided on the edge of the right side plate of the transmission fixing plate, a countersunk hole is provided on the protrusion, a pad is fixed in the countersunk hole, the pad faces the direction of the waveguide window, and the pad is used to position and determine the height of the transmission fixing plate.

[0009] Furthermore, an anti-fall-off flange is provided at the end where the connecting rod is connected to the tuyere cover, which limits the position when the tuyere cover is opened to prevent the tuyere cover from falling off after reaching the farthest end of the connecting rod.

[0010] Furthermore, an annular groove is provided on the inner surface of the tuyere cover, and a sealing material is filled in the groove. An annular boss is provided at a corresponding position of the positioning seat, and the annular groove cooperates with the annular boss to achieve sealing at the tuyere.

[0011] Furthermore, matching screw holes are provided at corresponding positions of the transmission fixing plate and the transmission cover plate, and are connected by bolts.

[0012] The beneficial effects of the utility model are as follows: since the linkage shaft and the connecting rod are threadedly connected, the elliptical cross-section rod of the connecting rod cooperates with the elliptical anti-rotation guide hole in the center of the air vent cover positioning seat and the waveguide window to prevent rotation, and the rotation of the linkage shaft causes the air vent cover connecting rod to move back and forth, and the air vent cover is fixedly connected to one end of the connecting rod, and the power provided by the stepper motor is converted into the push-pull power for opening or closing the air vent cover, and the anti-slip flange is limited when the air vent cover is opened, so that the air vent cover can be opened without falling off. This device solves the problem that after the electronic intelligent device is sealed, the space where the device is located cannot realize manual opening of the device vent, resulting in the heat retained inside the device cannot flow out of the device quickly and effectively, and the problem that electromagnetic compatibility cannot be achieved due to the small internal space of the device after the device waterproof cover is automatically opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural explosion diagram of an electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device.

[0014] Figure 2 This is the overall structure diagram of an electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric equipment.

[0015] Figure 3 The present invention is a usage status diagram of an electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric equipment.

[0016] Among them: 1-positioning seat, 2-waveguide window, 3-transmission fixing plate, 4-bearing, 5-linkage shaft, 6-circlip, 7-stepping motor, 8-connecting rod, 9-pad, 10-driving synchronous pulley, 11-driven synchronous pulley, 12-synchronous belt, 13-transmission cover plate, 14 air outlet cover. DETAILED DESCRIPTION

[0017] Embodiment 1: An electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device, characterized in that it includes an air inlet cover 14, a positioning seat 1, a waveguide window 2, a transmission fixing plate 3 and a transmission cover plate 13 connected in sequence, and the positioning seat 1 and the transmission fixing plate 3 are both provided with fan-shaped air holes that match the air outlet on the waveguide window 2. An elliptical anti-rotation guide hole is provided at the center of the back of the waveguide window 2 and the center of the positioning seat 1, and an elliptical connecting rod 8 matching the anti-rotation guide hole is used to penetrate the anti-rotation guide hole to connect the air inlet cover 14, the positioning seat 1 and the waveguide window 2, and the center of the connecting rod 8 is a threaded hole; at the same time, matching mounting holes are provided at the four corners of the positioning seat 1 and the waveguide window 2, and are connected through the mounting holes through the fixing parts. A stepper motor 7 is fixedly installed on the left side of the waveguide window 2, and a linkage shaft hole concentric with the anti-rotation guide hole on the back of the waveguide window 2 is provided in the center. The transmission fixing plate 3 includes a left and right side plate. The left side plate is provided with an opening for the stepper motor and its output shaft to pass through. The center of the right side plate is provided with a bearing countersunk hole and a fan-shaped air hole. The bearing 4 is installed in the bearing countersunk hole. The transmission fixing plate 3 is installed close to the waveguide window. The stepper motor 7 and its output shaft pass through the corresponding holes on the transmission fixing plate 3. The diameter of the linkage shaft 5 matches the diameter of the threaded hole in the center of the connecting rod 8 and is provided with threads. The linkage shaft 5 passes through the bearing 4 and the waveguide window 2 and penetrates the connecting rod 8 and is threadedly connected with the threaded hole of the connecting rod. A retaining ring groove is also provided at the connection between the linkage shaft 5 and the bearing 4, and a retaining ring 6 is installed in the retaining ring groove to prevent the bearing 4 and the linkage shaft 5 from being disengaged from the original installation position due to the matching clearance problem during the transmission process. A convex block is provided on the edge of the right side plate of the transmission fixing plate 3, and a countersunk hole is provided on the convex block. A pad block 9 is fixed in the countersunk hole. The pad block 9 faces the direction of the waveguide window 2. The pad block 9 is used to position and set the height of the transmission fixing plate 3. A driven synchronous pulley 11 is installed at the other end of the linkage shaft 5, and a driving synchronous pulley 10 is installed at the output shaft end of the stepper motor 7. The driving synchronous pulley 10 and the driven synchronous pulley 11 are connected by a synchronous belt 12; matching screw holes are provided at the corresponding positions of the transmission cover plate 13 and the transmission fixing plate 3, and the traditional cover plate is installed on the transmission fixing plate 3 by bolts and placed before the driving synchronous pulley 10 and the driven synchronous pulley 11. The end of the connecting rod 8 connected to the air vent cover 14 is provided with an anti-slip flange, which limits the position when the air vent cover 14 is opened to prevent the air vent cover 14 from falling off after moving to the farthest end of the connecting rod 8. An annular groove is provided on the inner surface of the air vent cover 14, and a sealing material is filled in the groove. An annular boss is provided at the corresponding position of the positioning seat 1, and the annular groove and the annular boss cooperate to achieve sealing at the air vent.

[0018] The device adopts the principles of special-shaped holes cooperating with anti-rotation sliding, synchronous belt and synchronous pulley transmission, screw transmission, waveguide window shielding, etc., and provides forward or reverse power through the stepping motor 7. The active synchronous pulley 10 transmits the power provided by the stepping motor 7 to the driven synchronous pulley 11 through the synchronous belt 12. The rotation of the driven synchronous pulley 11 drives the linkage shaft 5 to rotate. Since the linkage shaft 5 and the air outlet cover connecting rod 8 are threadedly connected, the elliptical cross-section light rod of the connecting rod 8 cooperates with the elliptical anti-rotation guide hole in the center of the positioning seat 1 and the waveguide window 2 to stop rotation, so as the linkage shaft 5 rotates, the connecting rod 8 moves back and forth, and because the air outlet cover 14 is fixedly connected to one end of the connecting rod 8, the forward or reverse power provided by the stepping motor 7 is finally converted into the push-pull power for opening or closing the air outlet cover 14. In addition to one end connected to the fixed air outlet cover 14, the connecting rod 8 is provided with an anti-slip flange at the other end. When the air outlet cover 14 is opened, it is limited, so that the air outlet cover 14 can be opened without falling off.

[0019] When in use, power is supplied to the stepper motor 7, and the stepper motor 7 rotates forward or reversely. The active synchronous pulley 10 rotates following the rotating shaft of the stepper motor 7, and drives the driven synchronous pulley 11 to rotate via the synchronous belt 12. The linkage shaft 5 rotates following the driven synchronous pulley 11. The rotation of the linkage shaft 5 drives the connecting rod 8. Since the connecting rod 8 is an elliptical rod and is placed in the elliptical anti-rotation guide hole in the center of the positioning seat 1 and the waveguide window 2, the connecting rod 8 cannot rotate while the linkage shaft 5 rotates, and can only move in the forward or reverse direction along the axial direction of the linkage shaft 5. Because the air vent cover 14 is fixedly connected to the other end of the connecting rod 8, the forward or reverse rotation of the stepper motor 7 is directly converted into the opening or closing of the air vent cover 14. An annular groove is provided on the inner surface of the air vent cover 14, and a sealing material is filled in the groove, which cooperates with the annular boss of the air vent cover positioning seat 1 to achieve the sealing of the air vent of the device.

Claims

1. An electromagnetic shielding waterproof cover device for air inlet and outlet of electric equipment, characterized in that: It includes an air vent cover, a positioning seat, a waveguide window, a transmission fixing plate and a transmission cover plate which are connected in sequence. The positioning seat and the transmission fixing plate are both provided with fan-shaped air holes which match the air outlet on the waveguide window. An elliptical anti-rotation guide hole is provided at the center of the back of the waveguide window and the center of the positioning seat. An elliptical connecting rod which matches the anti-rotation guide hole is used to penetrate the anti-rotation guide hole to connect the air vent cover, the positioning seat and the waveguide window. The center of the connecting rod is a threaded hole. A micro-stepping motor is fixedly installed on the left side of the waveguide window. A linkage shaft hole which is concentric with the anti-rotation guide hole on the back of the waveguide window is provided in the center. The transmission fixing plate includes left and right plates. The left plate is provided with a The stepper motor and its output shaft pass through the opening, and a bearing countersunk hole is opened in the center of the right side plate. The bearing is installed in the bearing countersunk hole. The transmission fixed plate is installed close to the waveguide window. The diameter of the linkage shaft matches the aperture of the threaded hole in the center of the connecting rod and is provided with threads. The linkage shaft passes through the bearing and the waveguide window and penetrates into the connecting rod to be threadedly connected with the threaded hole of the connecting rod. A driven synchronous pulley is installed at the other end of the linkage shaft, and a driving synchronous pulley is installed at the output shaft end of the stepper motor. The driving synchronous pulley and the driven synchronous pulley are connected by a synchronous belt drive; the transmission cover plate is installed on the transmission fixed plate and placed before the driving synchronous pulley and the driven synchronous pulley.

2. An electromagnetic shielding waterproof cover device for air inlet and outlet of electric equipment as claimed in claim 1, characterized in that The positioning seat and the waveguide window are provided with matching mounting holes at the four corners, and are connected by fasteners passing through the mounting holes.

3. The electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device as claimed in claim 1, characterized in that A retaining spring groove is also provided at the connection between the linkage shaft and the bearing, and a retaining spring is installed in the retaining spring groove to prevent the bearing and the linkage shaft from being disengaged from the original installation position due to matching clearance problems during the transmission process.

4. The electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device as claimed in claim 1, characterized in that A protrusion is provided on the edge of the right side plate of the transmission fixing plate, a countersunk hole is provided on the protrusion, a pad is fixed in the countersunk hole, the pad faces the direction of the waveguide window, and the pad is used to position and determine the height of the transmission fixing plate.

5. The electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device as claimed in claim 1, characterized in that The end of the connecting rod connected to the air vent cover is provided with an anti-fall-out flange, which limits the position when the air vent cover is opened to prevent the air vent cover from falling off after reaching the farthest end of the connecting rod.

6. The electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device as claimed in claim 1, characterized in that An annular groove is provided on the inner surface of the air outlet cover, and a sealing material is filled in the groove. An annular boss is provided at the corresponding position of the positioning seat, and the annular groove and the annular boss cooperate to achieve sealing at the air outlet.

7. The electromagnetic shielding waterproof cover device for the air inlet and outlet of an electric device as claimed in claim 1, characterized in that Matching screw holes are provided at corresponding positions of the transmission fixing plate and the transmission cover plate, and the transmission fixing plate and the transmission cover plate are connected by bolts.

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