Frequency converter with good protection effect

Abstract

The utility model relates to the technical field of frequency converters, in particular to a frequency converter with a good protection effect. The frequency converter comprises a frequency converter body, the upper surface of the frequency converter body is provided with a heat dissipation port, the surface of the frequency converter is electrically connected with a power interface, the upper surface of the frequency converter body is provided with a protection device, the protection device comprises two fixing plates, and the two fixing plates are fixedly connected with the upper surface of the frequency converter body. The sides, close to each other, of the two fixing plates are fixedly connected with a rotating shaft, the arc surface of the rotating shaft is rotatably connected with a protective cover, and the upper surface of the frequency converter body is fixedly connected with a limiting plate. The problems that when the frequency converter body is in a non-working state, dust, metal chips and other sundries enter the frequency converter through the heat dissipation opening and are accumulated on a circuit board, cooling fins and other components, the heat dissipation effect is affected, the frequency converter is overheated, the performance and service life of the frequency converter are reduced, and faults such as short circuit and poor contact can be possibly caused are solved.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, and in particular to a frequency converter with good protection effect. Background Technology

[0002] As core equipment in many fields such as industrial automation, electric drive, intelligent buildings, and new energy, the stability and reliability of frequency converters are crucial to the operational effectiveness of the entire system. During actual operation, frequency converters need to dissipate heat through heat dissipation vents to maintain their normal operating temperature. However, when the frequency converter is not in operation, the heat dissipation vents become channels for dust, metal shavings, and other impurities to enter the interior. Currently, in industrial production environments, a large amount of dust particles and metal shavings generated during processing are widespread.

[0003] Chinese patent application CN201520179363.6 discloses a frequency converter. The key technical features are: a housing and a latch; a circuit board is housed inside the housing, dividing the housing internally; a heat sink is located behind the circuit board and is latched to the circuit board; a temperature sensor is mounted on the heat sink; a capacitor is located in front of the circuit board and is fixedly connected to the circuit board; the housing also has one or more heat dissipation holes; a cooling fan is mounted on the top of the housing; the latch is located at the same height behind the housing and is fitted with a latching plate; a protrusion is provided on the latching plate, through which a bolt passes, and the bolt is movably connected to the protrusion. This frequency converter is easy to install and disassemble and has good heat dissipation.

[0004] Regarding the above-mentioned and existing related technologies, the inventor believes that the following defects often exist: when the inverter body is not working, dust, metal shavings and other debris can enter the inverter through the heat dissipation vents and accumulate on components such as circuit boards and heat sinks, which will affect the heat dissipation effect, cause the inverter to overheat, and thus reduce its performance and lifespan. It may also cause faults such as short circuits and poor contact. Therefore, an inverter with good protection effect is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where dust, metal shavings, and other debris can enter the inverter through the heat dissipation vents when the inverter is not in operation, accumulating on components such as circuit boards and heat sinks. This can affect heat dissipation, cause the inverter to overheat, and consequently reduce its performance and lifespan. It may also cause faults such as short circuits and poor contact. The invention proposes an inverter with better protection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a frequency converter with good protection effect, comprising a frequency converter body, a heat dissipation vent on the upper surface of the frequency converter body, a power interface electrically connected to the surface of the frequency converter, a protective device on the upper surface of the frequency converter body, the protective device comprising two fixing plates, both fixing plates being fixedly connected to the upper surface of the frequency converter body, a rotating shaft being fixedly connected to one side of the two fixing plates that are close to each other, a protective cover being rotatably connected to the arc surface of the rotating shaft, a limiting plate being fixedly connected to the upper surface of the frequency converter body, a plug rod being slidably inserted into the limiting plate, a pull plate being fixedly connected to one end of the plug rod, a long plate being fixedly connected to one side of the protective cover, a socket being opened on the surface of the long plate, the plug rod being slidably connected to the inner wall of the socket of the long plate, and the size of the plug rod being adapted to the size of the socket of the long plate.

[0007] The effect achieved by the above-mentioned components is as follows: by setting up protective devices, the inverter body is protected from dust and other impurities entering the inverter through the heat dissipation vents when it is not in operation. This prevents dust, metal shavings and other debris from entering the inverter and accumulating on components such as circuit boards and heat sinks, which may affect the heat dissipation effect, cause the inverter to overheat, and thus reduce its performance and lifespan. It may also cause faults such as short circuits and poor contact, making the inverter unable to work properly.

[0008] Preferably, the arc surface of the rotating shaft is fitted with two torsion springs, and the two ends of the torsion springs are respectively fixedly connected to the fixing plate and the protective cover.

[0009] The aforementioned components achieve the following effect: under the action of the torsion spring, the protective cover can be quickly and automatically rotated open and fixed at a certain angle, thus improving the convenience of the device.

[0010] Preferably, the arc surface of the insertion rod is fitted with a spring, and the two ends of the spring are fixedly connected to the pull plate and the limiting plate, respectively.

[0011] The effect achieved by the above components is that, under the action of the spring, the insertion rod is automatically sprung into the insertion hole of the long plate, thus improving the practicality of the device.

[0012] Preferably, a sealing gasket is fixedly connected to the surface of the protective cover, and the surface of the sealing gasket is slidably connected to the inverter body.

[0013] The effect achieved by the above components is that by setting a sealing gasket, the tiny gap between the protective cover and the inverter body is filled, thus preventing liquid from seeping into the inverter body from the gap.

[0014] Preferably, the surface of the inverter body is provided with a clamping device, the clamping device includes a square plate, the square plate is fixedly connected to the surface of the inverter body, a threaded rod is threadedly inserted into the square plate, one end of the threaded rod is rotatably connected to a clamping plate, and a backing plate is fixedly connected to the surface of the inverter body.

[0015] The effect achieved by the above components is that by setting up a clamping device, the power interface and the power plug are tightly and securely connected, avoiding problems such as power outages and poor reception caused by vibration, collision or other external forces, thus ensuring a continuous and stable power supply to the inverter body.

[0016] Preferably, the surface of the square plate has a perforation, and a limit rod is slidably connected to the inner wall of the perforation of the square plate, with one end of the limit rod being fixedly connected to the clamping plate.

[0017] The effect achieved by the above components is that by setting a limit rod, the clamping plate is prevented from rotating due to the rotation of the threaded rod, thus avoiding instability in the clamping effect caused by the rotation of the clamping plate.

[0018] Preferably, an anti-slip pad is fixedly connected to the surface of the clamping plate, and the anti-slip pad is made of rubber.

[0019] The effect achieved by the above components is that by setting anti-slip pads, the friction between the clamp and the power plug is increased, making it more stable in its original position and improving the stability of the device.

[0020] In this invention, by setting up a protective device, the effect of preventing dust and other impurities from entering the inverter body through the heat dissipation port when it is not working is achieved. This avoids dust, metal shavings and other debris from entering the inverter body, which may accumulate on components such as circuit boards and heat sinks, affecting the heat dissipation effect, causing the inverter to overheat, thereby reducing its performance and lifespan, and may also cause faults such as short circuits and poor contact, making the inverter unable to work normally.

[0021] In this invention, by setting a clamping device, the power interface and the power plug are tightly and securely connected, avoiding problems such as power outages and poor reception caused by the interface loosening due to vibration, collision or other external forces, and ensuring the continuous and stable power supply of the inverter body. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 In this utility model Figure 1 Partial structural diagram

[0024] Figure 3 This is a schematic diagram of the protective device in this utility model;

[0025] Figure 4 In this utility model Figure 3 Enlarged view of point C;

[0026] Figure 5 This is a partial structural diagram of the protective device in this utility model;

[0027] Figure 6 This is a schematic diagram of the clamping device in this utility model.

[0028] Legend: 1. Inverter body; 2. Heat dissipation vent; 3. Power interface; 4. Protective device; 401. Fixing plate; 402. Rotating shaft; 403. Protective cover; 404. Torsion spring; 405. Limiting plate; 406. Insert rod; 407. Pull plate; 408. Long plate; 409. Spring; 410. Sealing gasket; 5. Clamping device; 51. Square plate; 52. Threaded rod; 53. Clamping plate; 54. Support plate; 55. Limiting rod; 56. Anti-slip pad. Detailed Implementation

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, this utility model provides a technical solution: a frequency converter with good protection effect, including a frequency converter body 1, a heat dissipation vent 2 on the upper surface of the frequency converter body 1, a power interface 3 electrically connected to the surface of the frequency converter, and a protective device 4 on the upper surface of the frequency converter body 1. By setting the protective device 4, the frequency converter body 1 is protected from dust and other impurities entering the frequency converter through the heat dissipation vent 2 when it is not working. This prevents dust, metal shavings and other debris from entering the frequency converter and accumulating on components such as circuit boards and heat sinks, which may affect the heat dissipation effect, cause the frequency converter to overheat, and thus reduce its performance and lifespan. It may also cause faults such as short circuits and poor contact, making the frequency converter unable to work normally. The surface of the frequency converter body 1 is provided with a clamping device 5. By setting the clamping device 5, the power interface 3 and the power plug are tightly and securely connected, avoiding the problem of power failure or poor reception caused by vibration, collision or other external forces, and ensuring the continuous and stable power supply of the frequency converter body 1.

[0030] The specific design and function of its protective device 4 and clamping device 5 will be explained below.

[0031] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in this embodiment: the protective device 4 includes two fixing plates 401, both of which are fixedly connected to the upper surface of the inverter body 1. A rotating shaft 402 is fixedly connected to one side of the two fixing plates 401 that is close to each other. A protective cover 403 is rotatably connected to the arc surface of the rotating shaft 402. A limit plate 405 is fixedly connected to the upper surface of the inverter body 1. A plug rod 406 is slidably inserted into the limit plate 405. A pull plate 407 is fixedly connected to one end of the plug rod 406. A long plate 408 is fixedly connected to one side of the protective cover 403. An insertion hole is opened on the surface of the long plate 408. The plug rod 406 is slidably connected to the inner wall of the insertion hole of the long plate 408. The size of the plug rod 406 is adapted to the size of the insertion hole of the long plate 408. Two torsion springs 404 are sleeved on the arc surface of the rotating shaft 402. Both ends are fixedly connected to the fixing plate 401 and the protective cover 403 respectively. Under the action of the torsion spring 404, the protective cover 403 can be quickly and automatically rotated open and fixed at a certain angle, which improves the convenience of the device. Both ends of the spring 409 are fixedly connected to the pull plate 407 and the limiting plate 405 respectively. Under the action of the spring 409, the insertion rod 406 can be automatically springed into the insertion hole of the long plate 408, which improves the practicality of the device. A sealing gasket 410 is fixedly connected to the surface of the protective cover 403. The surface of the sealing gasket 410 is slidably connected to the inverter body 1. By setting the sealing gasket 410, the tiny gap between the protective cover 403 and the inverter body 1 is filled, which prevents liquid from seeping into the inverter body 1 from the gap.

[0032] Reference Figure 6 As shown, specifically, the clamping device 5 includes a square plate 51, which is fixedly connected to the surface of the inverter body 1. A threaded rod 52 is threaded into the square plate 51, and a clamping plate 53 is rotatably connected to one end of the threaded rod 52. A stop plate 54 is fixedly connected to the surface of the inverter body 1. A through hole is opened on the surface of the square plate 51, and a limit rod 55 is slidably connected to the inner wall of the through hole. One end of the limit rod 55 is fixedly connected to the clamping plate 53. By setting the limit rod 55, the clamping plate 53 is prevented from rotating due to the rotation of the threaded rod 52, thus avoiding instability of the clamping effect caused by the rotation of the clamping plate 53. An anti-slip pad 56 is fixedly connected to the surface of the clamping plate 53. The anti-slip pad 56 is made of rubber. By setting the anti-slip pad 56, the friction between the clamping plate 53 and the power plug is increased, making it more stable in its original position and improving the stability of the device.

[0033] Working principle: When the operator needs to protect the heat dissipation vent 2 on the inverter body 1, they move the protective cover 403, causing it to rotate on the arc surface of the rotating shaft 402. At this time, the torsion spring 404 will be in a torsional state, pulling the pull plate 407. The pull plate 407 drives the insertion rod 406 to slide within the limit plate 405, at which point the spring 409 is in a stretched state. Then, the protective cover 403 is rotated until it contacts the upper surface of the inverter body 1 with the sealing gasket 410, at which point it stops. At this time, the sealing gasket 410 will fill the tiny gap between the protective cover 403 and the inverter body 1. When the gap is closed, the pull plate 407 is released, and the spring 409 drives the plug rod 406 to automatically spring into the socket of the long plate 408, thus completing the protection of the heat dissipation port 2. By setting the protective device 4, the effect of preventing dust and other impurities from entering the inverter body 1 through the heat dissipation port 2 when it is not working is achieved. This avoids dust, metal shavings and other debris from entering the inverter and accumulating on the circuit board, heat sink and other components, which may affect the heat dissipation effect, cause the inverter to overheat, and thus reduce its performance and lifespan. It may also cause circuit short circuits, poor contact and other faults, making the inverter unable to work normally.

[0034] When the operator needs to clamp the power plug inserted into the power interface 3, the threaded rod 52 is rotated, allowing the threaded rod 52 to be pushed towards the power interface 3 within the square plate 51. The threaded rod 52 then drives the clamping plate 53 forward. At this time, the limit rod 55 will follow the clamping plate 53 forward to prevent the clamping plate 53 from rotating with the rotation of the threaded rod 52. This continues until the clamping plate 53 presses the power plug against the abutment plate 54. At this point, the anti-slip pad 56 will increase the friction between the clamping plate 53 and the power plug to complete the clamping. By setting the clamping device 5, the power interface 3 and the power plug are tightly and securely connected, avoiding problems such as power outages and poor reception caused by vibration, collision or other external forces, thus ensuring a continuous and stable power supply to the inverter body 1.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A frequency converter with a good protection effect, comprising a frequency converter body (1), characterized in that: The inverter body (1) has a heat dissipation vent (2) on its upper surface. A power interface (3) is electrically connected to the surface of the inverter. A protective device (4) is provided on the upper surface of the inverter body (1). The protective device (4) includes two fixing plates (401). Both fixing plates (401) are fixedly connected to the upper surface of the inverter body (1). A rotating shaft (402) is fixedly connected to one side of the two fixing plates (401) that is close to each other. A protective cover (403) is rotatably connected to the arc surface of the rotating shaft (402). The inverter body (1) has a limiting plate (405) fixedly connected to its upper surface. A rod (406) is slidably inserted into the limiting plate (405). A pull plate (407) is fixedly connected to one end of the rod (406). A long plate (408) is fixedly connected to one side of the protective cover (403). A socket is opened on the surface of the long plate (408). The rod (406) is slidably connected to the inner wall of the socket of the long plate (408). The size of the rod (406) is adapted to the size of the socket of the long plate (408).

2. The frequency converter of claim 1, wherein: The arc surface of the rotating shaft (402) is fitted with two torsion springs (404), and the two ends of the torsion springs (404) are fixedly connected to the fixing plate (401) and the protective cover (403) respectively.

3. The frequency converter of claim 1, wherein: The arc surface of the insertion rod (406) is fitted with a spring (409), and the two ends of the spring (409) are fixedly connected to the pull plate (407) and the limiting plate (405) respectively.

4. The frequency converter of claim 1, wherein: A sealing gasket (410) is fixedly connected to the surface of the protective cover (403), and the surface of the sealing gasket (410) is slidably connected to the inverter body (1).

5. The frequency converter of claim 1, wherein: The surface of the inverter body (1) is provided with a clamping device (5). The clamping device (5) includes a square plate (51). The square plate (51) is fixedly connected to the surface of the inverter body (1). A threaded rod (52) is threadedly inserted into the square plate (51). One end of the threaded rod (52) is rotatably connected to a clamping plate (53). A stop plate (54) is fixedly connected to the surface of the inverter body (1).

6. The frequency converter of claim 5, wherein: The square plate (51) has a perforation on its surface. A limit rod (55) is slidably connected to the inner wall of the perforation of the square plate (51). One end of the limit rod (55) is fixedly connected to the clamping plate (53).

7. The frequency converter of claim 5, wherein: The surface of the clamp (53) is fixedly connected with an anti-slip pad (56), which is made of rubber.

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