Mounting shell of frequency converter

Abstract

The mounting shell comprises a shell body, a first sealing cover, a second sealing cover, an inserting assembly and a clamping base, the top of the shell body is provided with an opening, the outer side of the opening is provided with a clamping groove in the circumferential direction, the clamping groove is provided with a first protruding block in the circumferential direction, and after the first sealing cover and the second sealing cover are covered with the shell body, the first protruding block is inserted into the clamping groove. The first sealing cover and the second sealing cover are installed in an inserted mode through the first protruding blocks, the inserting assemblies and the clamping bases are symmetrically arranged in the middle of the shell, after the first sealing cover and the shell are closed, the second sealing cover is pressed, meanwhile, the bottom of the second sealing cover is in interference fit with the clamping bases, and the second sealing cover is fixedly installed on the shell. The lower part of the shell can be maintained or debugged only by jacking up the sealing cover II, so that the sealing cover II is released in interference fit with the clamping base, meanwhile, the sealing cover II and the convex block I are plugged, sealed and jacked up, and the sealing cover II is dismantled to maintain or debug the lower part of the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converter housings, in particular to a mounting housing for a frequency converter. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. The frequency converter is mainly composed of rectification, filtering, inversion, braking unit, drive unit, detection unit, microprocessor unit, etc.

[0003] After the internal components of the inverter are installed, the inverter housing needs to be installed. In the prior art, such as the publication (announcement) number: CN220528353U, a convenient installation inverter housing in the field of inverter technology is disclosed, including an inverter housing and a base, the inverter housing is installed on the top of the base, positioning rods are provided on both sides of the top of the base, and a fixing port is provided on the positioning rod, a slide is provided in the inverter housing, a cavity is provided on the top of the slide, a fixing rod is provided in the slide, a connecting block is provided on the top of the fixing rod, a connecting rod is provided on the connecting block, a circular push rod is connected to the top of the connecting rod, a through hole matching the circular push rod is provided on the top of the cavity, a threaded hole is provided on the upper part of the through hole, a circular fixing block is provided on the top of the circular push rod, a handwheel is provided on the top of the circular fixing block, an external thread matching the threaded hole is provided on the surface of the circular fixing block, and the circular fixing block is installed in the threaded hole to fix the circular push rod.

[0004] In the prior art, the installation method of the shell cannot achieve sealed installation and convenient and quick disassembly for debugging or maintenance, and cannot achieve the technical effect of shortening the debugging or maintenance time. Therefore, it is necessary to provide a mounting shell for the inverter. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a mounting housing for a frequency converter, which solves the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: an installation shell of an inverter, including a shell, a cover one, a cover two, a plug-in assembly, and a clamping base. The top of the shell is provided with an opening, and the outer circumference of the opening is provided with a clamping groove, and the circumference of the clamping groove is provided with a protruding block one. After the cover one and the cover two are covered with the shell, they are plugged and installed with the cover one and the cover two through the protruding block one. The middle part of the shell is symmetrically provided with a plug-in assembly and a clamping base. After the cover one is covered with the shell, the shell fixes the cover one through the plug-in assembly. After the cover two is covered with the shell, the shell installs the cover two through the interference fit of the clamping base.

[0007] Preferably, the plug-in assembly includes a card plate, a rectangular column, a center block, a pressing block, and a telescopic mechanism. A slot is symmetrically provided in the middle of the shell. A plug plate 1 is provided on the side of the slot away from the second cover. A plug plate 2 is symmetrically provided at the end of the first cover close to the slot. A rectangular plug hole is coaxially provided on the first plug plate and the second plug plate. The rectangular column is plugged and installed inside the rectangular plug hole. A card plate is provided on the top of the rectangular column. The rectangular column is installed in the rectangular plug hole through the card plate limiter. The end of the rectangular column away from the card plate is provided with a hollow structure. Telescopic holes 1 are symmetrically provided on both sides of the hollow structure. A center block is arranged at the top of the structure, and T-shaped slide grooves are symmetrically provided on both sides of the center block at the top of the hollow structure. Two telescopic holes are symmetrically provided on both sides of the center block, and a telescopic mechanism is installed inside the two telescopic holes. A pressing block is arranged at the end of the telescopic mechanism away from the two telescopic holes, and a T-shaped slider is arranged on the top of the pressing block. The T-shaped slider is slidably installed with the T-shaped slide groove. The space arranged inside the hollow structure can completely accommodate the telescopic movement of the pressing block. After the cover one is covered and installed with the shell, the cover one is fixedly installed on the shell by abutting the pressing block with the plug plate two.

[0008] Preferably, the telescopic mechanism includes a spring and a pressing rod, the spring is sleeved inside the second telescopic hole, one side of the pressing rod is sleeved inside the spring, and the other side extends out of the second telescopic hole and is fixedly installed with the pressing block.

[0009] Preferably, the snap-on base is configured as a rectangular bar, the middle portion of the rectangular bar is configured as a semicircular groove, a plug plate three is provided on the side of the cover two close to the rectangular bar, a semicircular plug-in block is provided at the bottom end of the plug plate three, and after the cover two is closed with the shell, the semicircular plug-in block is installed in the semicircular groove through interference fit, thereby realizing fixed installation of the cover two and the shell.

[0010] Preferably, the protruding block 1 is configured as a cross-shaped structure, and the inner walls of the corresponding cover 1 and cover 2 are circumferentially provided with a cross-shaped groove, and the protruding block 1 is sealingly inserted in the cross-shaped groove.

[0011] In summary, the utility model provides an installation housing of a frequency converter, wherein the upper part of the housing is provided as a cover 1, and the lower part is provided as a cover 2. The installation method of the cover 1 and the housing is as follows: first, the protruding block 1 is plugged and sealed with the groove part of the inner circumferential direction of the cover 1. After the cover 1 and the housing are covered, the cover 1 is fixedly installed on the housing through the plug-in assembly. When the cover 1 is removed, only the plug-in assembly needs to be pressed to remove the cover 1, and the components on the upper part of the housing can be repaired or debugged.

[0012] First, the groove portion provided on the circumferential inner wall of the second cover is plugged and sealed with the protruding block 1 on the shell. While pressing the second cover, the bottom of the second cover is pressed to interference fit with the clamping base to achieve fixed installation of the second cover on the shell. When repairing or debugging the lower part of the shell, it is only necessary to lift up the second cover to release the interference fit of the second cover on the clamping base, and at the same time, lift up the second cover by plugging and sealing with the protruding block 1, and remove the second cover to repair or debug the lower part of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the clamping groove, the protruding block 1, the plug-in assembly, the clamping base, and the semicircular groove of the utility model;

[0015] Figure 3 It is a schematic diagram of the cover installation structure of the housing and the cover of the utility model;

[0016] Figure 4 It is a schematic diagram of the covering and installation structure of the housing and the second cover of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the utility model in which a cover is installed on a housing through a plug-in assembly;

[0018] Figure 6 It is a schematic diagram of the structural analysis of the installation of the plug-in assembly and the plug-in board 1 and the plug-in board 2 of the utility model;

[0019] Figure 7 It is a schematic diagram of the structure of the plug-in assembly of the utility model;

[0020] Figure 8 It is a schematic diagram of the hollow structure at the bottom of the plug-in assembly of the utility model;

[0021] Fig. 9 It is a schematic diagram of the structural analysis of the telescopic mechanism of the utility model;

[0022] Fig.10 This is a schematic diagram of the T-shaped chute structure of the utility model;

[0023] Fig.11 It is a schematic diagram of the structure of the T-shaped slider of the utility model;

[0024] Fig.12 It is a schematic diagram of the cross-shaped groove structure of the utility model;

[0025] In the figure: shell 1, cover 1 2, cover 2 3, plug-in assembly 4, snap-in base 5, snap-in groove 6, protruding block 1 7, card plate 11, rectangular column 12, center block 13, pressing block 14, telescopic mechanism 15, slot 16, plug plate 1 17, plug plate 2 21, rectangular plug hole 22, telescopic hole 1 23, T-shaped slide groove 24, telescopic hole 25, T-shaped slider 26, spring 27, pressing rod 31, semicircular groove 32, plug plate 3 33, cross groove 34, plug-in block 35. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 12 As shown:

[0028] The utility model discloses an installation shell of a frequency converter, comprising a shell 1, a cover 1, a cover 2, a cover 3, a plug-in assembly 4, and a clamping base 5. The top of the shell 1 is provided with an opening, the outer circumference of the opening is provided with a clamping groove 6, and the circumference of the clamping groove 6 is provided with a protruding block 7. After the cover 1, the cover 2, the cover 3 are covered with the shell 1, they are plugged and installed with the cover 1, the cover 2, the cover 3 through the protruding block 7. The middle part of the shell 1 is symmetrically provided with the plug-in assembly 4 and the clamping base 5. After the cover 1, the shell 1 is covered with the shell 1, the cover 1, the shell 1 is fixedly installed with the plug-in assembly 4, and after the cover 2, the shell 3 is covered with the shell 1, the cover 2, the shell 1 is installed with the clamping base 5 through interference fit.

[0029] Specifically, in the prior art, the enclosure of the inverter is installed by bolts or by buckling, or by a combination of the two. However, a single buckling method cannot achieve a firm sealing installation, which is not conducive to long-term sealing use. In the prior art, when the enclosure is sealed, the convenience of subsequent debugging, installation or maintenance cannot be achieved at the same time.

[0030] In this patent, the upper part of the shell 1 is set as a cover 2, and the lower part is set as a cover 2 3. The installation method of the cover 2 and the shell 1 is: first, the protrusion block 7 is plugged and sealed with the groove part of the inner circumference of the cover 2. After the cover 2 and the shell 1 are covered, the cover 2 is fixedly installed on the shell 1 through the plug-in component 4. When removing the cover 2, only the plug-in component 4 is pressed to remove the cover 2, and the components on the upper part of the shell 1 can be repaired or debugged;

[0031] The installation method of the cover 2 3 and the shell 1 is: first, the groove portion provided on the circumferential inner wall of the cover 2 3 is plugged and sealed with the raised block 1 7 on the shell 1, and while pressing the cover 2 3, the bottom of the cover 2 3 is pressed to interfere with the clamping base 5, so that the cover 2 3 is fixedly installed on the shell 1. When repairing or debugging the lower part of the shell 1, it is only necessary to lift up the cover 2 3 so that the cover 2 3 is released by the interference fit on the clamping base 5, and at the same time, the cover 2 3 is plugged and sealed with the raised block 1 7 and lifted up, and the cover 2 3 is removed to repair or debug the lower part of the shell 1.

[0032] In at least one embodiment, Figure 3 , Figures 4 to 11 As shown:

[0033] The installation method of the cover 1 2 and the shell 1 is as follows: the plug-in assembly 4 includes a card plate 11, a rectangular column 12, a center block 13, a pressing block 14, and a telescopic mechanism 15. A slot 16 is symmetrically provided in the middle of the shell 1. A plug-in plate 17 is provided on the side of the slot 16 away from the cover 2 3. A plug-in plate 21 is symmetrically provided at the end of the cover 1 2 near the slot 16. The plug-in plates 17 and 21 are coaxially provided with a rectangular socket 22. The rectangular column 12 is plugged and installed inside the rectangular socket 22. The top of the rectangular column 12 is provided with a card plate 11. The rectangular column 12 is limited and installed in the rectangular socket 22 by the card plate 11. The end of the rectangular column 12 away from the card plate 11 is set as a hollow structure, and the two sides of the hollow structure are symmetrical. A telescopic hole 23 is provided, a center block 13 is provided at the top of the hollow structure, T-shaped slots 24 are symmetrically provided on both sides of the center block 13 at the top of the hollow structure, telescopic holes 25 are symmetrically provided on both sides of the center block 13, a telescopic mechanism 15 is installed inside the telescopic hole 25, a pressing block 14 is provided at one end of the telescopic mechanism 15 away from the telescopic hole 25, a T-shaped slider 26 is provided on the top of the pressing block 14, the T-shaped slider 26 is slidably installed with the T-shaped slot 24, and the space provided inside the hollow structure can completely accommodate the telescopic movement of the pressing block 14, and after the cover 2 is covered and installed with the shell 1, the cover 2 is fixedly installed on the shell 1 by the contact between the pressing block 14 and the plug plate 21.

[0034] Specifically, a slot 16 is provided in the middle of the shell 1, a plug plate 21 is provided on the inner wall of the cover 2, a plug plate 17 is provided on the upper side of the middle of the shell 1, and a coaxial rectangular plug hole 22 is provided on the plug plate 17 and the plug plate 21, and a rectangular column 12 on the plug assembly 4 is inserted and installed inside the rectangular plug hole 22, and the upper part of the rectangular column 12 is connected with the rectangular plug hole 22 by setting a card plate 11, so that the rectangular column 12 is limitedly inserted in the rectangular plug hole 22, and the bottom of the rectangular column 12 is provided as a hollow structure, and a center block 13 is provided on the top of the hollow structure, and telescopic holes 23 are symmetrically provided on both sides of the hollow structure, and both sides of the center block 13 The second telescopic hole 25 is symmetrically arranged, and a telescopic mechanism 15 is installed inside the second telescopic hole 25. A pressing block 14 is arranged at one end of the telescopic mechanism 15 away from the second telescopic hole 25. When the rectangular column 12 is inserted and installed in the rectangular plug hole 22, force is applied to make the pressing block 14 shrink toward the inside of the hollow structure. The rectangular column 12 is inserted in the rectangular plug hole 22. When the pressing block 14 reaches the bottom of the rectangular plug hole 22, the pressing block 14 is extended through the telescopic mechanism 15, and the pressing block 14 abuts against the bottom of the rectangular plug hole 22. The card plate 11 is arranged on the upper part of the rectangular plug hole 22 to realize the fixed installation of the plug plate 17 and the plug plate 21, and to realize the fixed installation of the cover 1 2 on the housing 1;

[0035] In order to achieve stable extension and retraction of the pressing block 14 inside the hollow structure, T-shaped grooves 24 are symmetrically arranged on both sides of the center block 13 at the top of the hollow structure, and a T-shaped slider 26 is arranged on the upper part of the pressing block 14 and on one side located inside the hollow structure. The T-shaped slider 26 is slidably installed with the T-shaped groove 24, and the outer end of the T-shaped groove 24 is set as a closed opening, the purpose is to limit the sliding position of the T-shaped slider 26 and prevent the T-shaped slider 26 from falling out. The extension and retraction direction of the pressing block 14 is limited by the sliding installation of the T-shaped slider 26 and the T-shaped groove 24, and a stable abutment installation is achieved at the bottom of the rectangular socket 22.

[0036] In at least one embodiment, Figures 8 to 11 As shown:

[0037] In order to ensure that the pressing block 14 can abut against the bottom of the rectangular plug hole 22 in real time, and thus realize the fixed installation of the plug plate 17 and the plug plate 21, a telescopic mechanism 15 including a spring 27 and a pressing rod 31 is adopted. The spring 27 is installed in a sleeve manner inside the telescopic hole 25, and one side of the pressing rod 31 is sleeved and installed inside the spring 27, and the other side extends out of the telescopic hole 25 and is fixedly installed with the pressing block 14.

[0038] Specifically, the diameter of one side of the pressing rod 31 that is sleeved in the spring 27 is smaller than the diameter of the other side. The purpose of this setting is to abut against the extension and retraction of the spring 27 to complete the extension and retraction of the pressing rod 31, and the rod with a larger diameter is sleeved inside the telescopic hole 25, and the side of the rod with a larger diameter away from the telescopic hole 25 is fixedly installed with the pressing block 14. The pressing rod 31 is sleeved inside the spring 27, and the spring 27 is sleeved inside the telescopic hole 25. The side of the pressing rod 31 away from the telescopic hole 25 is fixedly installed with the pressing block 14, and the top of the pressing block 14 is slidably installed with the T-shaped slide groove 24, so that the pressing block 14 is firmly abutted against the bottom of the rectangular socket 22.

[0039] In at least one embodiment, Figure 2 , Figure 4 As shown:

[0040] In order to achieve fixed installation of cover 2 3 and shell 1, shell 1 is set in the middle of shell 1, the clamping base 5 is set as a rectangular bar, the middle of the rectangular bar is set as a semicircular groove 32, and cover 2 3 is provided with a plug plate 3 33 on the side close to the rectangular bar, and a semicircular plug-in block 35 is set at the bottom end of the plug plate 33. After cover 2 3 is covered with shell 1, the semicircular plug-in block is installed in the semicircular groove 32 through interference fit, so that cover 2 3 and shell 1 are fixedly installed.

[0041] In at least one embodiment, Figure 2 , Fig.12 As shown:

[0042] The protruding block 7 is set as a cross-shaped structure, and the inner wall of the corresponding cover 1 2 and cover 2 3 is circumferentially provided with a cross-shaped groove 34, and the protruding block 7 is sealed and inserted inside the cross-shaped groove 34.

[0043] The embodiments of the present invention are only used to illustrate the present invention and do not constitute a limitation on the scope of the claims. Other substantially equivalent alternatives that can be thought of by those skilled in the art are all within the protection scope of the present invention.

Claims

1. A mounting housing for a frequency converter, characterized in that: The invention comprises a shell (1), a cover 1 (2), a cover 2 (3), a plug-in assembly (4), and a snap-on base (5). The top of the shell (1) is provided with an opening, the outer circumference of the opening is provided with a snap-on groove (6), and the snap-on groove (6) is provided with a protruding block 1 (7) in the circumference. After the cover 1 (2) and the cover 2 (3) are covered with the shell (1), they are plugged and installed with the cover 1 (2) and the cover 2 (3) through the protruding block 1 (7). The middle part of the shell (1) is symmetrically provided with a plug-in assembly (4) and a snap-on base (5). After the cover 1 (2) and the shell (1) are covered, the shell (1) fixes the cover 1 (2) through the plug-in assembly (4). After the cover 2 (3) and the shell (1) are covered, the shell (1) is installed with the cover 2 (3) through interference fit through the snap-on base (5).

2. The installation housing of a frequency converter according to claim 1, characterized in that: The plug-in assembly (4) comprises a card plate (11), a rectangular column (12), a center block (13), a pressing block (14), and a telescopic mechanism (15). A slot (16) is symmetrically provided in the middle of the housing (1). A plug plate (17) is provided on a side of the slot (16) away from the second cover (3). A plug plate (21) is symmetrically provided at an end of the first cover (2) close to the slot (16). The plug plate (17) and the plug plate (21) are coaxially provided with a rectangular plug hole (22). The rectangular column (12) is plugged and installed inside the rectangular plug hole (22). A card plate (11) is provided at the top end of the rectangular column (12). The rectangular column (12) is limitedly installed in the rectangular plug hole (22) by the card plate (11). The end of the rectangular column (12) away from the card plate (11) is provided with a hollow structure. Both sides of the hollow structure are symmetrically provided with telescopic mechanisms. A shrink hole (23) is provided at the top of the hollow structure, a center block (13) is symmetrically provided at both sides of the center block (13) at the top of the hollow structure, a T-shaped slide groove (24) is symmetrically provided on both sides of the center block (13), a telescopic hole (25) is symmetrically provided at both sides of the center block (13), a telescopic mechanism (15) is installed inside the telescopic hole (25), a pressing block (14) is provided at one end of the telescopic mechanism (15) away from the telescopic hole (25), a T-shaped slider (26) is provided at the top of the pressing block (14), the T-shaped slider (26) is slidably installed with the T-shaped slide groove (24), the space provided inside the hollow structure can completely accommodate the telescopic movement of the pressing block (14), and after the cover (2) is covered and installed with the shell (1), the cover (2) is fixedly installed on the shell (1) by the contact between the pressing block (14) and the second plug plate (21).

3. The installation housing of a frequency converter according to claim 2, characterized in that: The telescopic mechanism (15) comprises a spring (27) and a pressing rod (31). The spring (27) is sleeved and installed inside the second telescopic hole (25). One side of the pressing rod (31) is sleeved and installed inside the spring (27), and the other side extends out of the second telescopic hole (25) and is fixedly installed with the pressing block (14).

4. The installation housing of a frequency converter according to claim 1, characterized in that: The clamping base (5) is configured as a rectangular strip, the middle portion of the rectangular strip is configured as a semicircular groove (32), a plug plate (33) is configured on one side of the second cover (3) close to the rectangular strip, a semicircular plug-in block is configured at the bottom end of the plug plate (33), and after the second cover (3) is covered with the housing (1), the semicircular plug-in block is installed in the semicircular groove (32) through interference fit, thereby achieving fixed installation of the second cover (3) and the housing (1).

5. The installation housing of a frequency converter according to claim 2, characterized in that: The protruding block 1 (7) is arranged as a cross-shaped structure, and the inner walls of the corresponding cover 1 (2) and cover 2 (3) are provided with a cross-shaped groove (34) in the circumferential direction, and the protruding block 1 (7) is sealed and inserted in the cross-shaped groove (34).

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