Waterproof and dustproof frequency converter for industrial automatic control instrument

Abstract

The invention relates to the technical field of frequency converter protection, and discloses a waterproof and dustproof frequency converter for an industrial automatic control instrument, which comprises a frequency converter, a button is fixedly connected to the front end of the frequency converter, a display screen is fixedly connected to the front end of the frequency converter, and a chute I is formed in the outer wall of the frequency converter. The inner wall of the first sliding groove is movably connected with a movable mechanism, the external mechanism comprises a first shell fixedly connected to the outer wall of the frequency converter, the side, away from the frequency converter, of the first shell is fixedly connected with a fixed plate, and the inner wall of the bottom of the first shell is fixedly connected with an elastic assembly. According to the waterproof and dustproof device for the frequency converter, the panel in front of the frequency converter is shielded, dust and water are prevented from being in direct contact with the panel of the frequency converter, and meanwhile through the transparent plate and the auxiliary assembly, the panel of the frequency converter is well waterproof and dustproof under the condition that normal use of the device is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of frequency converter protection, in particular to a waterproof and dustproof frequency converter for industrial automatic control instruments. Background Art

[0002] The frequency converter is an electric power control device that applies frequency conversion technology and microelectronics technology to control AC motors by changing the working power frequency of the motor. The frequency converter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc. The frequency converter adjusts the output power voltage and frequency by the internal IGBT switching, and provides the required power voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter also has many protection functions, such as over-current, over-voltage, overload protection, etc. With the continuous improvement of industrial automation, frequency converters have also been widely used.

[0003] The patent application with application number CN202322912862.9 discloses a waterproof and dustproof inverter, including an inverter body and an outer cover, a cavity is opened at the lower part of the inverter body, the protective mechanism includes a sliding plate, a wiring port is arranged on the inner side of the back of the inverter body, a mounting plate is arranged below the wiring port, a plurality of clamping plates are arranged on one side of the mounting plate, a plurality of limiting grooves are opened on the side of the sliding plate close to the mounting plate, the sliding plate is moved by the elastic force of the pressure spring through the clamping plates and the limiting grooves, the clamping plates are limited by the limiting grooves, the connecting wires are clamped between the two clamping plates, the protection of the connecting wires is improved, the cavity is isolated from the outside, external moisture and dust are prevented from entering the cavity, the protection of the wiring terminals is further improved, and the service life of the inverter is improved.

[0004] When the above-mentioned equipment is in use, the control panel of the inverter lacks protection, which causes the inverter control panel to malfunction or short-circuit when it is impacted by water flow or accumulated dust. Therefore, a device that can protect the control panel of the inverter is now needed. Summary of the invention

[0005] The object of the present invention is to provide a waterproof and dustproof frequency converter for industrial automatic control instruments to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a waterproof and dustproof frequency converter for industrial automatic control instruments, comprising a frequency converter, a button is fixedly connected to the front end of the frequency converter, a display screen is fixedly connected to the front end of the frequency converter, a slide groove 1 is opened on the outer wall of the frequency converter, wherein the slide groove 1 limits the moving space of the movable mechanism, and the inner wall of the slide groove 1 is movably connected to the movable mechanism, and further comprising: The external mechanism comprises a shell 1 fixedly connected to the outer wall of the inverter, the shell 1 is fixedly connected with a fixing plate on one side away from the inverter, the inner wall of the bottom of the shell 1 is fixedly connected with an elastic component, and the end of the elastic component away from the fixing plate is fixedly connected with a blocking plate, the outer wall of the blocking plate is movably connected to the shell 1, the top of the shell 1 is fixedly connected with the shell 2, the inner wall of the shell 2 is fixedly connected to the inverter, the inner wall of the shell 2 is fixedly connected with a partition, the top of the partition is provided with a notch, the top of the partition is provided with a slide groove 2, and the inner wall of the shell 2 is movably connected with a linkage component. When the movable mechanism is installed at the front end of the inverter, the blocking plate is first pushed backwards to facilitate the movable mechanism to be embedded in the slide groove 1 on the inverter. After the installation of the movable mechanism is completed, the blocking plate will be reset under the action of the elastic component and fix the position of the movable mechanism to prevent the movable mechanism from falling off on the inverter, thereby ensuring the protection of the equipment to the inverter.

[0007] According to the above technical solution, the linkage component includes a U-shaped plate 1, the inner wall of the outer shell 2 is movably connected to the U-shaped plate 1, the inner wall of the U-shaped plate 1 is movably connected to the frequency converter, and both ends of the U-shaped plate 1 are fixedly connected with elastic telescopic rods. After the movable component moves to the top, the gap between the movable component and the outer shell 2 will be blocked and fixed to prevent dust and water from entering the inner wall of the equipment from the top of the movable mechanism, thereby further protecting the frequency converter.

[0008] According to the above technical solution, one end of the elastic telescopic rod away from the U-shaped plate one is fixedly connected to the U-shaped plate two, the inner wall of the U-shaped plate two is movably connected to the inverter, the outer wall of the U-shaped plate two is movably connected to the outer shell two, the top of the U-shaped plate two is fixedly connected to an extension plate, the outer wall of the extension plate is movably connected to the slide groove two, and the end of the extension plate away from the U-shaped plate two is fixedly connected to the connecting rod. As the U-shaped plate one and the U-shaped plate two move backward, the moving space of the U-shaped plate one will be blocked by the movable mechanism, so the U-shaped plate two will lengthen the elastic telescopic rod, thereby increasing the pressure of the U-shaped plate pair on the movable mechanism.

[0009] According to the above technical solution, the top of the partition is fixedly connected with a sliding column, the outer wall of the sliding column is movably connected with a movable plate, the outer wall of the sliding column is sleeved with a spring 1, the bottom of the spring 1 is fixedly connected with the movable plate, and the top of the spring 1 is fixedly connected with the outer shell 2.

[0010] According to the above technical solution, both ends of the movable plate are rotatably connected to connecting plates through bearings, and the ends of the two connecting plates away from the movable plate are rotatably connected to the connecting rods through bearings. After the movable mechanism is fully embedded in the slide groove one, the raised plate on the top of the movable mechanism will push up the movable plate, thereby changing the position of the connecting plate, and driving the U-shaped plate one and the U-shaped plate two to move backward through the connecting rod and the extension plate.

[0011] According to the above technical scheme, the movable mechanism includes a front baffle, both ends of the front baffle are fixedly connected with sliding plates, the outer wall of the sliding plate is movably connected to a slide groove, the front end of the front baffle is fixedly connected with a transparent plate, the top of the front baffle is fixedly connected with a raised plate, the outer wall of the raised plate is movably connected to the notch, and the front end of the front baffle is fixedly connected with an auxiliary component. By setting the movable mechanism, the panel in front of the inverter is shielded to prevent dust and water from directly contacting the panel of the inverter. At the same time, through the transparent plate and the auxiliary components, the device can play a good role in waterproofing and dustproofing the panel of the inverter without affecting the normal use of the device.

[0012] According to the above technical solution, the auxiliary component includes an annular plate, one end of the annular plate away from the front baffle is fixedly connected to an elastic ring, one end of the elastic ring away from the annular plate is fixedly connected to a circular plate, and the outer wall of the circular plate is movably connected to the annular plate.

[0013] According to the above technical solution, one end of the circular plate away from the front baffle is fixedly connected to cylinder one, and one end of the circular plate away from cylinder one is fixedly connected to cylinder two, and cylinder two penetrates the front baffle and extends to the front end of the button, and the outer wall of cylinder two is movably connected to the front baffle, and the outer wall of cylinder two is sleeved with spring two, and one end of spring two is fixedly connected to the front baffle, and one end of spring two away from the front baffle is fixedly connected to the circular plate. By setting an auxiliary component, the device can operate the panel while the front baffle blocks the inverter panel. Since there is an active area in the auxiliary component, there is still a gap between the annular plate and the circular plate in the auxiliary component. Such a gap will cause dust and water to enter the panel, so the circular plate and the front end of the annular plate are blocked by an elastic ring, which will not affect the normal movement of the circular plate and the device can also operate normally.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention shields the panel in front of the inverter by setting a movable mechanism to prevent dust and water from directly contacting the inverter panel. At the same time, through the transparent plate and auxiliary components, the device can play a good role in waterproofing and dustproofing the inverter panel without affecting the normal use of the device.

[0015] 2. The present invention sets an auxiliary component so that the device can operate the panel while the front baffle blocks the inverter panel. Since there is an active area in the auxiliary component, there is still a gap between the annular plate and the circular plate in the auxiliary component. Such a gap will cause dust and water to enter the panel, so the front end of the circular plate and the annular plate is blocked by an elastic ring. This will not affect the normal movement of the circular plate and the device can also operate normally.

[0016] 3. The present invention provides an external mechanism to fix the position of the movable mechanism when the movable mechanism is installed on the front end of the inverter, thereby preventing the movable mechanism from falling off the inverter and ensuring the protective effect of the device on the inverter.

[0017] 4. The present invention sets a linkage component, which will shield and fix the gap between the movable component and the second shell after the movable component moves to the top, preventing dust and water from entering the inner wall of the device from the top of the movable mechanism, thereby further protecting the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the external mechanism of the present invention; Figure 4 is a second cross-sectional view of the housing of the present invention; Figure 5 is a top cross-sectional view of the second housing of the present invention; Figure 6 is a schematic diagram of the linkage assembly of the present invention; Figure 7 It is a schematic diagram of the activity mechanism of the present invention; Figure 8 is a schematic diagram of the auxiliary components of the present invention; Fig. 9 is a cross-sectional view of an auxiliary component of the present invention; In the figure: 1, inverter; 101, button; 102, slideway 1; 103, display screen; 2, external mechanism; 201, housing 1; 202, fixing plate; 203, elastic component; 204, blocking plate; 205, housing 2; 206, partition; 207, notch; 208, slideway 2; 21, linkage component; 211, U-shaped plate 1; 212, elastic telescopic rod; 213, U-shaped plate 2; 21 4. Extension plate; 215. Connecting rod; 216. Sliding column; 217. Movable plate; 218. Spring 1; 219. Connecting plate; 3. Movable mechanism; 301. Front baffle; 302. Transparent plate; 303. Raised plate; 304. Sliding plate; 31. Auxiliary component; 311. Annular plate; 312. Elastic ring; 313. Circular plate; 314. Cylinder 1; 315. Spring 2; 316. Cylinder 2. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1: See Figure 1-Figure 6 The present invention provides a technical solution: a waterproof and dustproof frequency converter for industrial automatic control instruments, including a frequency converter 1, a button fixedly connected to the front end of the frequency converter 1, a display screen 103 fixedly connected to the front end of the frequency converter 1, a slide groove 102 opened on the outer wall of the frequency converter 1, and a movable mechanism 3 movably connected to the inner wall of the slide groove 102, and also includes: The external mechanism 2 includes a shell 201 fixedly connected to the outer wall of the inverter 1, a fixed plate 202 is fixedly connected to the side of the shell 201 away from the inverter 1, an elastic component 203 is fixedly connected to the inner wall of the bottom of the shell 201, an end of the elastic component 203 away from the fixed plate 202 is fixedly connected to a blocking plate 204, the outer wall of the blocking plate 204 is movably connected to the shell 1 201, a shell 205 is fixedly connected to the top of the shell 1 201, the inner wall of the shell 205 is fixedly connected to the inverter 1, a partition 206 is fixedly connected to the inner wall of the shell 205, a notch 207 is provided at the top of the partition 206, a slide groove 208 is provided at the top of the partition 206, and a linkage component 21 is movably connected to the inner wall of the shell 205.

[0023] The linkage assembly 21 includes a U-shaped plate 1 211, the inner wall of the second housing 205 is movably connected to the U-shaped plate 1 211, the inner wall of the U-shaped plate 1 211 is movably connected to the frequency converter 1, both ends of the U-shaped plate 1 211 are fixedly connected to elastic telescopic rods 212, one end of the elastic telescopic rod 212 away from the U-shaped plate 1 211 is fixedly connected to the U-shaped plate 2 213, the inner wall of the U-shaped plate 213 is movably connected to the frequency converter 1, the outer wall of the U-shaped plate 213 is movably connected to the second housing 205, the top of the U-shaped plate 213 is fixedly connected to an extension plate 214, and the outer wall of the extension plate 214 is movably connected to the second slide groove 208 Dynamic connection, the end of the extension plate 214 away from the U-shaped plate 213 is fixedly connected to the connecting rod 215, the top of the partition 206 is fixedly connected to the sliding column 216, the outer wall of the sliding column 216 is movably connected to the movable plate 217, the outer wall of the sliding column 216 is sleeved with a spring 218, the bottom of the spring 218 is fixedly connected to the movable plate 217, the top of the spring 218 is fixedly connected to the outer shell 205, both ends of the movable plate 217 are rotatably connected to the connecting plates 219 through bearings, and the ends of the two connecting plates 219 away from the movable plate 217 are rotatably connected to the connecting rod 215 through bearings.

[0024] The working principle of this embodiment is as follows: when the movable mechanism 3 needs to be installed to the front end of the inverter 1, the blocking plate 204 is first pushed backwards, and the entrance of the slide slot 102 on the inverter 1 will be revealed. At this time, the movable mechanism 3 is inserted into the slide slot 102 and pushed upward along the track of the slide slot 102. As the movable mechanism 3 moves, the movable mechanism 3 will push the movable plate 217 in the housing 205 to extend the track of the sliding column 216 and move upward. The movable plate 217 moving upward will drive the connecting plate 219 to move upward together, and the end of the connecting plate 219 away from the movable plate 217 will When the movable plate 217 moves in a direction away from the movable plate 217, the connecting plate 219 will drive the connecting rod 215 to move backward, and the connecting rod 215 moving backward will drive the U-shaped plate 213 to move together through the extension plate 214. The moving U-shaped plate 213 will drive the U-shaped plate 1 211 to apply pressure to the movable mechanism 3 through the elastic telescopic rod 212, thereby starting the fixing effect. As the movable mechanism 3 is completely embedded in the slide groove 102, the blocking plate 204 at the bottom will be reset by the elastic force of the elastic component 203, thereby blocking the moving space at the bottom of the movable mechanism 3 and further fixing the movable mechanism 3.

[0025] Example 2: Based on Example 1, please refer to Figure 7-Figure 9 The movable mechanism 3 includes a front baffle 301, both ends of the front baffle 301 are fixedly connected with sliding plates 304, the outer wall of the sliding plate 304 is movably connected to the slide groove 102, the front end of the front baffle 301 is fixedly connected with a transparent plate 302, the top of the front baffle 301 is fixedly connected with a raised plate 303, the outer wall of the raised plate 303 is movably connected to the notch 207, and the front end of the front baffle 301 is fixedly connected with an auxiliary component 31.

[0026] The auxiliary component 31 includes an annular plate 311, an end of the annular plate 311 away from the front baffle 301 is fixedly connected to an elastic ring 312, an end of the elastic ring 312 away from the annular plate 311 is fixedly connected to a circular plate 313, an outer wall of the circular plate 313 is movably connected to the annular plate 311, an end of the circular plate 313 away from the front baffle 301 is fixedly connected to a cylinder 1 314, an end of the circular plate 313 away from the cylinder 1 314 is fixedly connected to a cylinder 2 316, the cylinder 2 316 penetrates the front baffle 301 and extends to the front end of the button 101, and the outer wall of the cylinder 2 316 is movably connected to the front baffle 301. The outer wall of cylinder 2 316 is sleeved with spring 2 315, one end of spring 2 315 is fixedly connected to the front baffle 301, and the end of spring 2 315 away from the front baffle 301 is fixedly connected to the circular plate 313. During normal use of the equipment, when the frequency converter 1 needs to be adjusted, it is only necessary to press down cylinder 1 314, and the movement of cylinder 1 314 will drive the circular plate 313 to move together, and then the movement of the circular plate 313 will drive cylinder 2 316 to press the button 101 on the frequency converter 1, and when the circular plate 313 moves, the elastic ring 312 and spring 2 315 will also change together.

[0027] The working principle of this embodiment is as follows: when installing the movable mechanism 3, the sliding plate 304 is embedded in the slide groove 102, and the front baffle 301 is pushed to move upward. When it moves to the top, the raised plate 303 is embedded in the notch 207. At this time, the raised plate 303 lifts the movable plate 217 and allows the U-shaped plate 211 to fit in front of the front baffle 301, thereby starting the fixing effect.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof and dustproof frequency converter for industrial automatic control instruments, comprising a frequency converter (1), a button fixedly connected to the front end of the frequency converter (1), a display screen (103) fixedly connected to the front end of the frequency converter (1), a slide groove (102) formed on the outer wall of the frequency converter (1), and a movable mechanism (3) movably connected to the inner wall of the slide groove (102), characterized in that: Also includes: The external mechanism (2) comprises a housing (201) fixedly connected to the outer wall of the frequency converter (1), a fixing plate (202) fixedly connected to a side of the housing (201) away from the frequency converter (1), an elastic component (203) fixedly connected to the inner wall of the bottom of the housing (201), an end of the elastic component (203) away from the fixing plate (202) fixedly connected to a blocking plate (204), and an outer wall of the blocking plate (204) and the housing (201) are fixedly connected. (201) is movably connected, the top of the shell one (201) is fixedly connected to the shell two (205), the inner wall of the shell two (205) is fixedly connected to the frequency converter (1), the inner wall of the shell two (205) is fixedly connected to the partition (206), the top of the partition (206) is provided with a notch (207), the top of the partition (206) is provided with a slide groove two (208), and the inner wall of the shell two (205) is movably connected to a linkage component (21).

2. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 1, characterized in that: The linkage assembly (21) comprises a U-shaped plate 1 (211), the inner wall of the outer shell 2 (205) is movably connected to the U-shaped plate 1 (211), the inner wall of the U-shaped plate 1 (211) is movably connected to the frequency converter (1), and both ends of the U-shaped plate 1 (211) are fixedly connected to elastic telescopic rods (212).

3. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 2, characterized in that: One end of the elastic telescopic rod (212) away from the U-shaped plate one (211) is fixedly connected to the U-shaped plate two (213); the inner wall of the U-shaped plate two (213) is movably connected to the inverter (1); the outer wall of the U-shaped plate two (213) is movably connected to the outer shell two (205); the top of the U-shaped plate two (213) is fixedly connected to the extension plate (214); the outer wall of the extension plate (214) is movably connected to the slide groove two (208); and the end of the extension plate (214) away from the U-shaped plate two (213) is fixedly connected to the connecting rod (215).

4. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 3 is characterized in that: The top of the partition (206) is fixedly connected to a sliding column (216), the outer wall of the sliding column (216) is movably connected to a movable plate (217), the outer wall of the sliding column (216) is sleeved with a spring 1 (218), the bottom of the spring 1 (218) is fixedly connected to the movable plate (217), and the top of the spring 1 (218) is fixedly connected to the outer shell 2 (205).

5. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 4, characterized in that: Both ends of the movable plate (217) are rotatably connected to connecting plates (219) via bearings, and one end of the two connecting plates (219) away from the movable plate (217) is rotatably connected to the connecting rod (215) via bearings.

6. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 5, characterized in that: The movable mechanism (3) comprises a front baffle (301), both ends of the front baffle (301) are fixedly connected to sliding plates (304), the outer wall of the sliding plate (304) is movably connected to the first slide groove (102), the front end of the front baffle (301) is fixedly connected to a transparent plate (302), the top of the front baffle (301) is fixedly connected to a raised plate (303), the outer wall of the raised plate (303) is movably connected to the notch (207), and the front end of the front baffle (301) is fixedly connected to an auxiliary component (31).

7. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 6, characterized in that: The auxiliary component (31) comprises an annular plate (311), one end of the annular plate (311) away from the front baffle (301) is fixedly connected to an elastic ring (312), one end of the elastic ring (312) away from the annular plate (311) is fixedly connected to a circular plate (313), and the outer wall of the circular plate (313) is movably connected to the annular plate (311).

8. The waterproof and dustproof frequency converter for industrial automatic control instruments according to claim 7, characterized in that: One end of the circular plate (313) away from the front baffle (301) is fixedly connected to a cylinder 1 (314), and one end of the circular plate (313) away from the cylinder 1 (314) is fixedly connected to a cylinder 2 (316), and the cylinder 2 (316) passes through the front baffle (301) and extends to the front end of the key (101), and the outer wall of the cylinder 2 (316) is movably connected to the front baffle (301), and the outer wall of the cylinder 2 (316) is sleeved with a spring 2 (315), and one end of the spring 2 (315) is fixedly connected to the front baffle (301), and the end of the spring 2 (315) away from the front baffle (301) is fixedly connected to the circular plate (313).

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