Box structure of motor frequency converter

Abstract

The utility model relates to a motor frequency converter box body structure, comprising a box body, the box body comprises a bottom plate, a lower housing, an upper housing and a cover body, the left upper part of the box body is provided with a gap corresponding to the position of a terminal group of a frequency converter circuit board, and the gap is composed of a left side missing part of the cover body and a left side missing part of the upper housing. A mounting partition plate used for mounting a frequency converter circuit board is arranged at the bottom in the upper shell, a cover cap which can be opened upwards and is matched with the notch is arranged at the notch, and a wire outlet notch is formed in the lower edge of the left side of the cover cap. The motor frequency converter box body is reasonable in structural design, novel in structure and convenient to operate, after the cover cap is opened, a frequency converter circuit board terminal set can be fully exposed, space constraint is reduced, wiring is convenient, operation is easy, and the wiring speed is increased.

Description

Technical Field

[0001] The utility model relates to the field of frequency converters, in particular to a box structure of a motor frequency converter. Background Art

[0002] For the internal circuit board terminal group of the traditional motor frequency converter, due to space limitation, the wiring is very inconvenient, time-consuming, and inefficient.

[0003] For the box structure of a motor vector frequency converter in Chinese Patent CN213959942U, when wiring, the movable baffle can be removed and the movable cover can be opened to facilitate wiring and improve the wiring speed. However, the split structure of the movable baffle and the cover will affect the strength of the box to a certain extent, and it is necessary to open and disassemble two parts, the operation is not convenient enough, and there are still obstructions and constraints on the front side and the rear side of the terminal group, and the operation space during wiring is not large enough. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a box structure of a motor frequency converter with novel structure and convenient operation, which reduces space constraints, facilitates wiring, and improves the wiring speed.

[0005] The utility model is realized by the following scheme: A box structure of a motor frequency converter includes a box body, the box body includes a bottom plate, a lower shell, an upper shell and a cover body. A notch corresponding to the position of the frequency converter circuit board terminal group is opened in the upper left part of the box body. The notch is composed of a left missing part of the cover body and a left missing part of the upper shell. An installation partition for installing the frequency converter circuit board is provided at the inner bottom of the upper shell. A cover is provided at the notch, which can be opened upward and is adapted to the notch. An outlet slot is opened at the lower left edge of the cover.

[0006] Further, at the edge of the upper shell directly below the notch, a connecting wing plate with a height higher than the installation partition is provided. The shape of the connecting wing plate is the same as the shape of the lower edge of the cover. A rabbet part is provided on the upper edge of the connecting wing plate, and a rabbet groove cooperating with the rabbet part is provided on the lower edge of the cover.

[0007] Further, two connecting rib strips extending downward, one in front and one behind, are provided at the lower left part of the cover. A limiting convex part is provided at the lower end of the connecting rib strip. A limiting slot hole for snap-fitting with the limiting convex part is provided on the connecting wing plate on the left side of the upper shell.

[0008] Further, a hinge plate extending out and hinged to the cover body is provided at the upper right part of the cover.

[0009] Further, heat dissipation holes are provided on both the front and rear sides of the upper shell.

[0010] Further, an air inlet hole is provided on the left side of the lower shell, and an air outlet window is provided on the right side of the lower shell. A hollow baffle is detachably installed in the air outlet window.

[0011] Further, a pair of insertion plates are provided on the lower side of the hollow baffle, and slots matching the insertion plates are provided on the lower side of the air outlet window; in the middle of the upper side of the hollow baffle, an elastic buckle is provided, and a hook portion is provided on the upper side of the spring buckle, and a card slot matching the hook portion is provided in the middle of the upper side of the air outlet window.

[0012] Compared with the prior art, the utility model has the following beneficial effects: The box body structure of the motor frequency converter of the utility model is reasonably designed, novel in structure and convenient to operate. After the cover is opened, the terminal group of the frequency converter circuit board can be fully exposed, reducing space constraints, facilitating wiring and improving the wiring speed.

[0013] In order to make the purpose, technical solution and advantages of the utility model more clear, the following will further describe the utility model in detail through specific embodiments and related drawings. Description of the Drawings

[0014] Figure 1 is the front view of the box body of the embodiment of the utility model;

[0015] Figure 2 is the schematic diagram of the open state of the cover of the embodiment of the utility model;

[0016] Figure 3 is the sectional view of the box body of the embodiment of the utility model;

[0017] Figure 4 is the sectional view of the cover of the embodiment of the utility model;

[0018] Figure 5 is the left view of the box body of the embodiment of the utility model;

[0019] Figure 6 is the right view of the box body of the embodiment of the utility model

[0020] Explanation of the reference numerals in the drawings: 100 - box body, 110 - bottom plate, 120 - lower housing, 121 - air inlet hole, 122 - slot, 123 - card slot, 130 - upper housing, 131 - installation partition, 132 - connecting wing plate, 133 - rabbet portion, 134 - limit slot hole, 135 - heat dissipation hole, 140 - cover body, 150 - notch, 160 - cover, 161 - rabbet groove, 162 - connecting rib, 163 - limit convex portion, 164 - hinge plate, 165 - wire outlet slot, 170 - hollow baffle, 171 - insertion plate, 172 - elastic buckle. Detailed Embodiment

[0021] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] As Figures 1-6 shown, a motor frequency converter box structure includes a box body 100. The box body includes a bottom plate 110, a lower housing 120, an upper housing 130, and a cover body 140. A notch 150 corresponding to the position of the frequency converter circuit board terminal group is provided at the upper left part of the box body 100. The notch is composed of a left missing part of the cover body and a left missing part of the upper housing. An installation partition 131 for installing the frequency converter circuit board is provided at the inner bottom of the upper housing. A cover 160 that can be opened upward and is adapted to the notch is provided at the notch. An outlet slot 165 is provided at the lower left edge of the cover. The motor frequency converter box structure of the present utility model improves the existing split movable cover and movable baffle, sets a single integral cover, has better strength and more convenient operation; after the cover is opened, the frequency converter circuit board terminal group can be fully exposed, and the left side, front side, rear side, and upper side of the terminal group are not blocked, reducing space constraints, facilitating wiring, improving wiring speed, and just covering the cover after wiring is completed, and the wire passes through the outlet slot.

[0024] In this embodiment, a connecting wing plate 132 with a height higher than the installation partition is provided at the edge of the upper housing directly below the notch. The shape of the connecting wing plate is the same as the shape of the lower edge of the cover. A rabbet portion 133 is provided on the upper edge of the connecting wing plate, and a rabbet groove 161 cooperating with the rabbet portion is provided on the lower edge of the cover. Through the cooperation of the rabbet portion and the rabbet groove, a good positioning effect is achieved, ensuring the stable position of the cover when it is covered and avoiding the position deviation of the cover.

[0025] In this embodiment, two connecting rib strips 162 extending downward, one in front and one behind, are provided at the lower left part of the cover 160. A limiting convex portion 163 is provided at the lower end of the connecting rib strip. A limiting slot hole 134 that is clamped and cooperated with the limiting convex portion is provided on the connecting wing plate on the left side of the upper housing. When the cover 160 is covered, the limiting convex portion 163 at the lower end of the connecting rib strip 162 is clamped into the limiting slot hole to lock the cover, and it is necessary to apply upward force or use a tool to push the limiting convex portion 163 through the limiting slot hole 134 to open the cover.

[0026] In this embodiment, an articulated plate 164 that is hinged to the cover body extends from the upper right side of the cover 160. An inwardly protruding articulated bump is provided inside the articulated plate 164, and articulated holes that cooperate with the articulated bump are provided on the front and rear sides of the cover body.

[0027] In this embodiment, heat dissipation holes 135 are provided on both the front and rear sides of the upper housing 130 to ensure the heat dissipation effect of the frequency converter circuit board.

[0028] In this embodiment, an air inlet hole 121 is provided on the left side of the lower housing 120, and an air outlet window is provided on the right side of the lower housing. A hollow baffle 170 is detachably installed in the air outlet window. A heat dissipation fan is installed at the lower part of the box body of the motor frequency converter, and the heat dissipation fan is located inside the hollow baffle 170. Through the action of the heat dissipation risk, air enters from the left side of the lower housing and exits from the right side, thereby ensuring the heat dissipation effect; the hollow baffle 170 is detachably installed to facilitate the cleaning or maintenance of the heat dissipation fan.

[0029] In this embodiment, a pair of insertion plates 171 are provided on the lower side of the hollow baffle 170, and slots 122 that cooperate with the insertion plates are provided on the lower side of the air outlet window; an elastic buckle 172 is provided in the middle of the upper side of the hollow baffle, a hook portion 173 is provided on the upper side of the spring buckle, and a card slot 123 that cooperates with the hook portion is provided in the middle of the upper side of the air outlet window. Press down the elastic buckle 172 to disengage the hook portion 173 from the card slot 123, and then the hollow baffle 170 can be taken out, which is convenient for disassembly and assembly.

[0030] In this embodiment, the bottom plate 1 and the lower housing, as well as the upper housing and the cover body, are connected by the cooperation of card slots and buckles, and only the lower housing and the upper housing are connected by screws. The whole box body is easy to assemble and has high efficiency.

[0031] For any of the technical solutions disclosed by the present utility model as described above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many implementable numerical values. Since there are too many numerical values to list exhaustively, the present utility model only discloses some numerical values to illustrate the technical solutions of the present utility model, and the above-listed numerical values should not constitute a limitation on the protection scope of the present invention.

[0032] If the present utility model discloses or involves mutually fixedly connected parts or structural members, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), or can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by integral casting process) (except when it is obvious that the integral forming process cannot be adopted).

[0033] In addition, unless otherwise stated, the terms used to represent positional relationships or shapes in any of the technical solutions disclosed in the present utility model described above include states or shapes that are approximate, similar, or close thereto.

[0034] Any component provided by the present utility model can either be assembled from a plurality of individual components or be a single component manufactured by an integral forming process.

[0035] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in any other form. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A motor inverter box structure, comprising a box, characterized in that: The box body includes a bottom plate, a lower shell, an upper shell and a cover body. A notch corresponding to the position of the inverter circuit board terminal group is opened at the upper left part of the box body. The notch is composed of the left missing part of the cover body and the left missing part of the upper shell body. An installation partition for installing the inverter circuit board is provided at the bottom of the upper shell body. A cover that can be opened upward and matched with the notch is provided at the notch, and a wire outlet slot is opened at the lower left edge of the cover cover.

2. The motor inverter box structure according to claim 1 is characterized in that: A connecting wing plate whose height is higher than the mounting partition is provided at the edge of the upper shell just below the notch, and the shape of the connecting wing plate is consistent with the shape of the lower edge of the cover. A tongue and groove portion is provided on the upper edge of the connecting wing plate, and a tongue and groove groove matching the tongue and groove portion is provided on the lower edge of the cover.

3. The motor inverter box structure according to claim 2 is characterized in that: The lower left side of the cover is provided with two connecting ribs extending downward, one in front and one behind, the lower end of the connecting rib is provided with a limiting protrusion, and the connecting wing plate on the left side of the upper shell is provided with a limiting slot hole that is snap-fitted with the limiting protrusion.

4. The motor inverter box structure according to claim 1 is characterized in that: A hinge plate hinged to the cover body extends from the upper right side of the cover.

5. The motor inverter box structure according to claim 1 is characterized in that: The front and rear sides of the upper shell are both provided with heat dissipation holes.

6. The motor inverter box structure according to claim 1, characterized in that: An air inlet hole is arranged on the left side of the lower shell body, and an air outlet window is arranged on the right side of the lower shell body. A hollow baffle is detachably installed in the air outlet window.

7. The motor inverter box structure according to claim 6 is characterized in that: A pair of plug plates are provided on the lower side of the hollow baffle plate, and a slot cooperating with the plug plates is provided on the lower side of the air outlet window; an elastic buckle is provided in the middle of the upper side of the hollow baffle plate, a hook is provided on the upper side of the spring buckle, and a slot cooperating with the hook is provided in the middle of the upper side of the air outlet window.

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