A frequency converter with a snap-on housing

Abstract

A frequency converter with buckle type shell belongs to the technical field of frequency converter. The existing frequency converter shell adopts bolt fixing, which is inconvenient to disassemble and maintain, and the stability of part of the buckle structure is poor. The frequency converter is provided with a protective shell at the side end of the frequency converter body, which is composed of upper and lower cover plates, and the upper cover plate has a control panel. Two groups of clamping components are arranged between the upper and lower cover plates and the body, the clamping plate has a clamping gap, the bottom circular clamping column is extruded with the semicircular clamping block of the body, so that the clamping plate is bent to clamp the semicircular clamping block into position. Positioning components are arranged in four accommodating grooves, and the elastic ring enhances the friction between the clamping plate and the semicircular clamping block to prevent loosening. Limiting blocks are arranged between the four clamping plates to separate and limit. The end of the clamping plate is provided with a pressing plate, which is pressed to bend the clamping plate out of the clamping gap when disassembled, so that the upper and lower cover plates can be easily removed, and the control panel is easy to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter technology, and in particular relates to a frequency converter with a snap-fit ​​housing. Background Technology

[0002] In the field of existing frequency converter technology, the control board inside the frequency converter body is the core component, and its operational stability directly affects the overall performance of the frequency converter. To protect the control board from external environmental interference and physical damage, a casing is usually installed on the side of the frequency converter body.

[0003] Traditional inverter housings often use bolts for fastening. This method is cumbersome for control board maintenance, requiring tools to unscrew each bolt individually, which is time-consuming and can lead to thread wear, affecting the housing's secure hold. Furthermore, some housings using snap-fit ​​structures lack sufficient stability in their connections, easily loosening due to vibration during inverter operation and potentially detaching, thus failing to effectively protect the control board. Therefore, developing an inverter housing that allows for convenient and quick disassembly for control board maintenance while ensuring connection stability is of significant practical importance.

[0004] To address the aforementioned problems, this utility model document proposes a frequency converter with a snap-fit ​​housing. Utility Model Content

[0005] The purpose of this utility model is to provide a frequency converter with a snap-on housing, which can quickly snap the upper and lower cover plates to the frequency converter body. When the control board needs to be maintained, simply press the pressing plate to bend the snap plate away from the snap gap, making it easy and quick to disassemble the housing without the need for tools, greatly saving maintenance time and solving existing technical problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A frequency converter with a snap-fit ​​housing for convenient maintenance of the control board, comprising: The inverter housing has a shell on its side for protecting the control board inside the inverter housing. The shell includes an upper cover and a lower cover. The upper cover has a control panel for controlling the inverter housing. To facilitate the quick fixation of the upper and lower cover plates to the side of the inverter body, two sets of snap-fit ​​components are provided between the upper and lower cover plates and the inverter body. Each set of snap-fit ​​components includes a receiving groove opened in the upper cover plate, a snap-fit ​​plate fixed in the receiving groove, and a semi-circular snap-fit ​​block fixed in the inner wall of the inverter body. A snap-fit ​​gap for receiving the semi-circular snap-fit ​​block is formed in the snap-fit ​​plate. To maintain the stability of the snap-fit ​​assembly, a set of positioning components is provided in each of the four receiving slots. The four sets of positioning components are used to enhance the friction between the four snap-fit ​​plates and the four semi-circular snap-fit ​​blocks.

[0007] Optionally, each set of the snap-fit ​​assembly further includes a circular snap post fixed to the bottom end of the snap plate. The circular snap post is used to press against the semi-circular snap block and guide the semi-circular snap block into the snap-fit ​​gap. When the circular locking pin engages with the locking plate downwards, it first contacts the semi-circular locking block. The circular surfaces of the circular locking pin and the semi-circular locking block press against each other, and the position of the semi-circular locking block is fixed. The circular locking pin will cause the side end of the locking plate to bend, so that it passes through the protrusion of the semi-circular locking block and locks the semi-circular locking block into the locking gap for positioning.

[0008] Optionally, each of the positioning components includes multiple elastic rings, one end of each elastic ring is fixed to the side end of the card plate, and the other end of each elastic ring is fixed in the receiving groove.

[0009] Optionally, two limiting blocks are fixed between the four card plates, and the two limiting blocks are used to separate and limit the upper cover plate and the lower cover plate.

[0010] Optionally, all of the elastic rings are made of thermoplastic TPE.

[0011] Optionally, each of the four card plates has a pressing plate fixed at its far ends, and the four pressing plates move outward through both ends of the upper cover plate and the lower cover plate, respectively. By pressing the two pressing plates and moving them in a direction that brings them closer together, the pressing plates will push the card plate to bend temporarily, allowing the card plate to better disengage from the locking gap.

[0012] In this application, when the circular locking pin is engaged downwards by the locking plate, it first contacts the semi-circular locking block. The circular surfaces of the circular locking pin and the semi-circular locking block press against each other, and the position of the semi-circular locking block is fixed. The circular locking pin will drive the side end of the locking plate to bend, so that it passes through the protrusion of the semi-circular locking block and engages the semi-circular locking block into the locking gap for positioning. By pressing the two pressing plates and moving them towards each other, the pressing plates will push the locking plate to bend temporarily, allowing the locking plate to better disengage from the locking gap. In this utility model, the inverter with a snap-on housing achieves quick snap-on fixation of the upper and lower cover plates to the inverter body by setting a snap-on assembly and using the cooperation of circular snap-on posts and semi-circular snap-on blocks. When the control board needs to be maintained, simply press the pressing plate to bend the snap-on plate away from the snap-on gap, making it easy and quick to disassemble the housing without the need for tools, which greatly saves maintenance time. In this invention, the inverter with a snap-fit ​​housing has an elastic ring in the positioning assembly made of thermoplastic TPE, which has good elasticity and wear resistance. After the snap-fit ​​plate and the semi-circular snap-fit ​​block are engaged, the elastic ring provides a stable elastic force, enhances the friction between the two, effectively prevents the snap-fit ​​plate from loosening due to vibration during inverter operation, ensures the connection stability between the housing and the inverter body, and can continuously and effectively protect the control board.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front-view perspective view of the present invention; Figure 2 This is a first partial cross-sectional view of the present invention; Figure 3 This is a second partial cross-sectional view of the present invention; Figure 4 This is a schematic cross-sectional view of the third part of this utility model.

[0016] In the diagram: 1. Inverter body; 2. Upper cover plate; 3. Lower cover plate; 4. Receiving groove; 5. Clamping plate; 6. Circular clamping post; 7. Elastic ring; 8. Limiting block; 9. Semi-circular clamping block; 10. Pressing plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0020] In one embodiment: Please see Figures 1-4 As shown, this embodiment provides a frequency converter with a snap-fit ​​housing, including a frequency converter body 1. The side of the frequency converter body 1 is provided with a housing for protecting the control board inside the frequency converter body 1. The housing consists of an upper cover plate 2 and a lower cover plate 3. The upper cover plate 2 contains a control panel for controlling the frequency converter body 1.

[0021] To facilitate the quick and easy attachment of the upper cover plate 2 and the lower cover plate 3 to the side of the inverter body 1, two sets of snap-fit ​​components are provided between the upper cover plate 2, the lower cover plate 3 and the inverter body 1. The specific structure of each snap-fit ​​component is as follows: a receiving groove 4 is opened in the upper cover plate 2, a snap-fit ​​plate 5 is fixed in the receiving groove 4, and a semi-circular snap-fit ​​block 9 is fixed to the inner wall of the inverter body 1. A snap-fit ​​gap is formed in the snap-fit ​​plate 5 to accommodate the semi-circular snap-fit ​​block 9. Each snap-fit ​​component also includes a circular snap-fit ​​post 6 fixed to the bottom of the snap-fit ​​plate 5. The circular snap-fit ​​post 6 is used to press against the semi-circular snap-fit ​​block 9 and guide the semi-circular snap-fit ​​block 9 into the snap-fit ​​gap. During installation, the circular locking post 6 first contacts the semi-circular locking block 9 when the locking plate 5 is snapped down. Since both the circular locking post 6 and the semi-circular locking block 9 have circular surfaces, when they are pressed together, the position of the semi-circular locking block 9 is fixed. The circular locking post 6 will drive the side end of the locking plate 5 to bend, so that it passes through the protrusion of the semi-circular locking block 9 and snaps the semi-circular locking block 9 into the locking gap for positioning.

[0022] To maintain the stability of the snap-fit ​​assembly, a set of positioning components is provided in each of the four receiving slots 4. These four sets of positioning components enhance the friction between the four snap-fit ​​plates 5 and the four semi-circular snap-fit ​​blocks 9. Each positioning component includes multiple elastic rings 7, one end of which is fixed to the side of the snap-fit ​​plate 5, and the other end of which is fixed within the receiving slot 4. The elastic rings 7 are made of thermoplastic TPE, a material with good elasticity and wear resistance. This provides stable elastic force after the snap-fit ​​plates 5 and semi-circular snap-fit ​​blocks 9 are engaged, enhancing the friction between them and preventing the snap-fit ​​plates 5 from loosening.

[0023] Two limiting blocks 8 are fixed between the four card plates 5. The two limiting blocks 8 are used to separate and limit the upper cover plate 2 and the lower cover plate 3 to ensure that the upper cover plate 2 and the lower cover plate 3 are in the correct position during installation and to avoid installation deviation.

[0024] In another embodiment: Improvements based on Example 1: See Appendix Figure 1 -Appendix Figure 4A frequency converter with a snap-fit ​​housing has four snap-fit ​​plates 5, each with a pressing plate 10 fixed to its far ends. The four pressing plates 10 extend outwards through both ends of the upper cover plate 2 and the lower cover plate 3. When maintenance of the frequency converter is required and the housing needs to be disassembled, pressing two pressing plates 10 and moving them towards each other causes the pressing plates 10 to push the snap-fit ​​plates 5 to bend temporarily, allowing the snap-fit ​​plates 5 to better disengage from the snap-fit ​​gap, thus facilitating the removal of the upper cover plate 2 and the lower cover plate 3 from the frequency converter body 1.

[0025] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0026] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A frequency converter with a snap-fit ​​housing, used for convenient maintenance of the control board, characterized in that, include: The inverter body (1) has a housing on its side for protecting the control board inside the inverter body (1). The housing includes an upper cover plate (2) and a lower cover plate (3). The upper cover plate (2) has a control panel for controlling the inverter body (1). In order to facilitate the quick fixing of the upper cover plate (2) and the lower cover plate (3) to the side of the inverter body (1), two sets of snap-fit ​​components are provided between the upper cover plate (2), the lower cover plate (3) and the inverter body (1). Each set of snap-fit ​​components includes a receiving groove (4) opened in the upper cover plate (2), a snap-fit ​​plate (5) is fixed in the receiving groove (4), and a semi-circular snap-fit ​​block (9) is fixed in the inner wall of the inverter body (1). A snap-fit ​​gap for receiving the semi-circular snap-fit ​​block (9) is formed in the snap-fit ​​plate (5). In order to maintain the stability of the snap-fit ​​assembly, a set of positioning components is provided in each of the four receiving slots (4). The four sets of positioning components are used to enhance the friction between the four snap-fit ​​plates (5) and the four semi-circular snap-fit ​​blocks (9).

2. The frequency converter with a snap-fit ​​housing as described in claim 1, characterized in that, Each set of the snap-fit ​​assembly also includes a circular snap post (6) fixed to the bottom end of the snap plate (5), the circular snap post (6) being used to press against the semi-circular snap block (9) to guide the semi-circular snap block (9) into the snap-fit ​​gap; When the circular locking post (6) is engaged with the locking plate (5) downwards, it first contacts the semi-circular locking block (9). The circular surfaces of the circular locking post (6) and the semi-circular locking block (9) press against each other. The position of the semi-circular locking block (9) is fixed. The circular locking post (6) will drive the side end of the locking plate (5) to bend, so that it passes through the protrusion of the semi-circular locking block (9) and locks the semi-circular locking block (9) into the locking gap for positioning.

3. A frequency converter with a snap-fit ​​housing as described in claim 2, characterized in that, Each of the positioning components includes multiple elastic rings (7), one end of each elastic ring (7) is fixed to the side of the card plate (5), and the other end of each elastic ring (7) is fixed in the receiving groove (4).

4. A frequency converter with a snap-fit ​​housing as described in claim 2, characterized in that, Two limiting blocks (8) are fixed between the four card plates (5). The two limiting blocks (8) are used to separate and limit the upper cover plate (2) and the lower cover plate (3).

5. A frequency converter with a snap-fit ​​housing as described in claim 3, characterized in that, All of the elastic rings (7) are made of thermoplastic TPE.

6. A frequency converter with a snap-fit ​​housing as described in claim 3, characterized in that, Each of the four card plates (5) has a pressing plate (10) fixed at the far ends. The four pressing plates (10) move outward and pass through both ends of the upper cover plate (2) and the lower cover plate (3); In this process, by pressing the two pressing plates (10) and moving them toward each other, the pressing plates (10) will push the card plate (5) to bend temporarily, so that the card plate (5) can better disengage from the card gap.

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