Casing structure and frequency converter
By designing a casing structure with a dust cover to conceal the card holes and slots, the problem of exposed card holes and hooks is solved, achieving better dust protection and improved appearance, and reducing the risk of inverter failure.
Patent Information
- Application Number
- CN202520148117.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The exposed locking holes and hooks of existing frequency converters allow external dust and liquids to enter the main housing, increasing the risk of failure. Furthermore, the exposed hooks can easily scratch workers.
Design a housing structure in which a dust cover is detachably installed on the main housing via a locking post and a locking hook. The locking post is located in the locking slot, and the locking hook is located in the locking hole. The dust cover covers the locking hole and the locking slot to prevent dust and liquid from entering, while also improving the problem of exposed locking hooks and locking posts.
It effectively prevents dust and liquid from entering the main housing, reduces the risk of inverter failure, improves the appearance, and prevents exposed hooks from scratching workers, thus enhancing dust protection.
Smart Images
Figure CN223872533U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of frequency converter technology, and in particular to a housing structure and a frequency converter. Background Technology
[0002] A variable-frequency drive (VFD) is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of the power supply. A VFD includes a housing and the frequency conversion components housed within it. The housing consists of a main casing and a dust cover. Terminal sockets are mounted on the main casing and exposed to the outside. The dust cover is located at the terminal sockets, thus providing dust protection for the VFD and reducing protruding structures on its surface, improving its appearance.
[0003] In some related technologies, the main housing has a locking hole, and the dust cover has a locking hook. The hook engages with the locking hole inside the main housing to install the dust cover onto the main housing. Because the hook engages with the locking hole inside the main housing, not only is the locking hole exposed, but the hook also protrudes from the locking hole. Exposed locking holes allow external dust and liquids to enter the main housing, increasing the risk of inverter malfunction. Exposed hooks can also easily scratch personnel installing the inverter. Utility Model Content
[0004] The embodiments of this application aim to provide a housing structure and frequency converter, so as to at least improve the problem of exposed clamping holes and hooks in the housing structure.
[0005] In a first aspect, embodiments of this application provide a housing structure, the housing structure including a main housing, a dust cover, a locking post, and a locking hook. The main housing has a mounting portion on its side along a first direction, the mounting portion having a locking groove and a locking hole, the locking groove extending along a second direction, and the locking hole extending along the first direction. The dust cover is disposed on the mounting portion, covering the locking hole and the locking groove. The locking post is connected to the dust cover, the locking post extending along the second direction, and the locking post is disposed within the locking groove. The locking hook is connected to the dust cover, the locking hook extending along the first direction, the locking hook being disposed in the locking hole and engaging with the mounting portion. The second direction is perpendicular to the first direction.
[0006] In some embodiments, the mounting portion has a first abutting surface and a second abutting surface, the second abutting surface being located at the latch hole, and the second abutting surface and the first abutting surface being disposed opposite to each other along the second direction. The dust cover has a first mating surface, and the latch has a second mating surface, the first mating surface abutting against the first abutting surface, the second mating surface abutting against the second abutting surface, and the first mating surface and the second mating surface being disposed opposite to each other.
[0007] In some embodiments, the end of the hook is provided with a first guide surface, which forms an angle with the second abutment surface. When the hook is inserted into the locking hole, the first guide surface is used to contact the second abutment surface and guide the second abutment surface to contact the second mating surface.
[0008] In some embodiments, the outer surface of the mounting portion includes a third abutting surface, and the inner surface of the mounting portion includes a fourth abutting surface, the fourth abutting surface and the third abutting surface being disposed opposite to each other along the first direction. The dust cover has a third mating surface, the hook includes a hook portion, the hook portion has a fourth mating surface, the third mating surface abuts against the third abutting surface, and the fourth mating surface abuts against the fourth abutting surface.
[0009] In some embodiments, the hook portion is provided with a second guide surface, and the mounting portion is provided with a guide mating surface. The guide mating surface is located in the locking hole, and the angle between the second guide surface and the guide mating surface is an acute angle. The hook also includes a rod portion, which connects the dust cover and the hook portion. The second guide surface is used to contact the guide mating surface when the hook is inserted into the locking hole, so as to drive the rod portion to deform and allow the hook portion to pass through the locking hole.
[0010] In some embodiments, the hook further includes a rod and a pressing portion, the rod connecting the dust cover and the hook, the pressing portion being disposed on the rod and exposed outside the mounting portion and the dust cover, the pressing portion being used to drive the rod to deform when pressed, so as to disengage the fourth mating surface from the fourth abutting surface.
[0011] In some embodiments, the mounting portion has a fifth abutting surface located in the slot, and the fifth abutting surface and the third abutting surface are disposed opposite to each other along the first direction. The locking post has a fifth mating surface that abuts against the fifth abutting surface. Along the second direction, the fifth abutting surface, the third abutting surface, and the fourth abutting surface are arranged sequentially.
[0012] In some embodiments, the mounting portion has a sixth abutment surface and a seventh abutment surface, which are disposed opposite to each other along a third direction. The dust cover has a sixth mating surface and a seventh mating surface, which abut against the sixth abutment surface and the seventh mating surface abut against the seventh abutment surface, and are disposed opposite to each other. The first direction, the second direction, and the third direction are mutually perpendicular.
[0013] In some embodiments, the mounting portion is provided with a third guide surface and a fourth guide surface, the third guide surface and the fourth guide surface are arranged at intervals along the third direction, one end of the third guide surface away from the second direction is connected to the sixth abutment surface, one end of the fourth guide surface away from the second direction is connected to the seventh abutment surface, and the third guide surface and the fourth guide surface are located between the plane where the sixth abutment surface is located and the plane where the seventh abutment surface is located.
[0014] Secondly, embodiments of this application provide a frequency converter, which includes a frequency converter device, a terminal socket, and a housing structure as described in any of the preceding claims. The frequency converter device is disposed within the main housing. The terminal socket is disposed in the mounting portion and is electrically connected to the frequency converter device.
[0015] In this embodiment of the housing structure and inverter, the dust cover is detachably installed on the mounting part of the main housing via locking posts and locking holes to provide dust protection for the inverter, reduce protruding structures on the inverter's outer surface, and improve the inverter's appearance. Furthermore, when the dust cover is on the mounting part, it covers the locking holes and slots, preventing external dust and liquids from entering the main housing through these openings and slots, thus enhancing the dust cover's dust protection effect on the inverter, further improving the inverter's appearance, and reducing the risk of inverter malfunction. Since the locking posts are located in the locking slots and the hooks are located in the locking holes, when the dust cover covers the locking holes and slots, it also covers the locking posts and hooks, mitigating the problem of exposed locking posts and hooks easily scratching workers.
[0016] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description
[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0018] Figure 1 This is a schematic diagram of the casing structure according to an embodiment of this application;
[0019] Figure 2 yes Figure 1 A partial structural diagram of the main shell;
[0020] Figure 3 yes Figure 1 Schematic diagram of the structure of the dust cover;
[0021] Figure 4 yes Figure 2 Schematic diagram of the middle mounting section;
[0022] Figure 5 yes Figure 3 A structural schematic diagram of the dust cover from another perspective.
[0023] The reference numerals in the detailed embodiments are as follows:
[0024] 100. Casing structure;
[0025] 1. Main housing; 11. Mounting part; 111. Slot; 1111. Fifth abutment surface; 112. Slot hole; 1121. Second abutment surface; 1122. Guide mating surface;
[0026] 113. Via;
[0027] 114. Mounting groove; 1131. First abutting surface; 1132. Sixth abutting surface; 1133. Seventh abutting surface; 1134. Third guide surface; 1135. Fourth guide surface;
[0028] 115. Third defensive surface; 116. Fourth defensive surface;
[0029] 2. Dust cover; 21. First mating surface; 22. Third mating surface; 23. First limiting post; 231. Sixth mating surface; 24. Second limiting post; 241. Seventh mating surface;
[0030] 3. Snap-on post; 31. Fifth mating surface;
[0031] 4. Hook; 41. Hook portion; 411. Fourth mating surface; 412. Second guide surface; 42. Rod portion; 43. Second mating surface; 44. First guide surface; 45. Pressing portion;
[0032] 5. Connecting column;
[0033] X, first direction; Y, second direction; Z, third direction. Detailed Implementation
[0034] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0036] In the description of the embodiments of this application, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0037] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0038] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0039] Please see Figures 1 to 3 This application provides a housing structure 100, which includes a main housing 1, a dust cover 2, a locking post 3, and a locking hook 4. The locking post 3 is connected to the dust cover 2, and the locking hook 4 is connected to the dust cover 2. The dust cover 2 is detachably installed on the main housing 1 via the locking post 3 and the locking hook 4.
[0040] The main housing 1 described above is used to house electronic devices, such as frequency converters, to protect them and provide a mounting base. The main housing 1 can be square or other shapes, as long as it can accommodate the electronic devices.
[0041] In some embodiments, please refer to Figure 1 and Figure 2 The main housing 1 has a mounting part 11 on its side along the first direction X. The mounting part 11 is used to connect with the dust cover 2, the locking post 3 and the locking hook 4.
[0042] For the aforementioned mounting section 11, please refer to Figure 2 and Figure 4 The mounting part 11 is provided with a slot 111 and a hole 112. The slot 111 extends along the second direction Y, and the hole 112 extends along the first direction X.
[0043] In some embodiments, the mounting portion 11 is a portion of the side wall of the main housing 1 facing the first direction X.
[0044] In some embodiments, the slot 111 and the hole 112 extend through the main housing 1 and connect the interior and exterior of the main housing 1. In other embodiments, the slot 111 does not extend through the main housing 1.
[0045] For the dust cover 2 mentioned above, please refer to Figures 1 to 3 The dust cover 2 is disposed on the mounting portion 11. In the embodiment of this application, the mounting portion 11 is the part of the side wall of the main housing 1 facing the first direction X. The mounting portion 11 is generally flat. The dust cover 2 is disposed on the mounting portion 11 and is flat.
[0046] In some embodiments, please refer to Figure 5 The locking post 3 extends along the second direction Y and is disposed within the locking groove 111. When the locking post 3 is disposed in the locking groove 111, the mounting part 11 limits the position of the locking post 3 relative to the mounting part 11 in a direction perpendicular to the second direction Y.
[0047] In some embodiments, the housing structure 100 further includes a connecting post 5, one end of which is connected to the dust cover 2, and the other end of which extends in the opposite direction of the first direction X and connects to a retaining post 3. The connecting post 5 is used to offset the position of the retaining post 3 relative to the dust cover 2 in the opposite direction of the first direction X, so that the retaining groove 111 can be spaced apart from the dust cover 2 in the first direction X, and thus the retaining groove 111 can be formed on the side of the mounting portion 11 facing away from the first direction X. Figure 4 As shown, the slot 111 penetrates the mounting portion 11 in the opposite direction of the first direction X, allowing the slot 111 to be injection molded and milled in the first direction X, eliminating the need for injection molding and milling in the second direction Y within a confined space. This reduces the molding difficulty of the slot 111 and consequently lowers the production cost of the mounting portion 11. The mounting portion 11 has a through hole 113 that connects the slot 111 to the side of the mounting portion 11 facing the first direction X, allowing the locking pin 3 to pass through the through hole 113 in the opposite direction of the first direction X and be placed inside the slot 111. It is understood that since the dust cover 2 is located on the side of the mounting portion 11 facing the first direction X, the slot 111 does not need to limit the locking pin 3 in the opposite direction of the first direction X. Therefore, the slot 111 being located on the side of the mounting portion 11 away from the first direction X does not affect its function.
[0048] In some embodiments, please refer to Figure 3 and Figure 5 The hook 4 extends along the first direction X, and the hook 4 is located in the hook hole 112 and engages with the mounting part 11.
[0049] In this embodiment, the extension direction of the locking post 3 is different from that of the locking hook 4. The locking post 3 and the locking hook 4 cooperate to install the dust cover 2 on the mounting part 11, and the locking hook 4 is engaged with the mounting part 11. Therefore, the locking hook 4 can be disengaged from the mounting part 11 under external force, that is, the dust cover 2 can be detached from the mounting part 11.
[0050] In some embodiments, the hook 4 includes a hook portion 41, which is disposed in the locking hole 112 and engaged with the mounting portion 11. Specifically, the hook portion 41 at least partially abuts against the side of the mounting portion 11 opposite to the dust cover 2, thereby preventing the hook 4 from disengaging from the locking hole 112. It can be understood that the hook portion 41 passes through the locking hole 112 and is connected to the dust cover 2, that is, the hook portion 41 is disposed in the locking hole 112 and engaged with the mounting portion 11.
[0051] In some embodiments, please refer to Figure 3 and Figure 5 The hook 4 includes a rod 42, which connects the dust cover 2 and the hook 41. The rod 42 is located in the locking hole 112, and the hook 41 abuts against the side of the mounting part 11 opposite to the dust cover 2, thereby preventing the hook 4 from disengaging from the locking hole 112. That is, the hook 4 is located in the locking hole 112 and is engaged with the mounting part 11. The rod 42 extends along the first direction X, that is, the hook 4 extends along the first direction X. It is understood that the hook 41 and the locking hole 112 are staggered along the first direction X, so that the hook 41 can abut against the edge of the locking hole 112, and the locking hole 112 is configured to allow the hook 41 to pass through. That is, when the hook 41 moves to a certain position relative to the mounting part 11 along the first direction X, the projection of the hook 41 along the first direction X coincides with the locking hole 112. At this time, the hook 41 can pass through the locking hole 112 in a direction parallel to the first direction X, so as to realize the engagement and disengagement of the hook 4 and the mounting part 11.
[0052] In related technologies, the locking holes 112 are located on both sides of the main housing 1 along the third direction Z, and the hooks 4 are engaged with the locking holes 112 from inside the main housing 1. That is, at least part of the hooks 4 are exposed from the locking holes 112, which not only causes the locking holes 112 to be exposed, but also causes the hooks 4 to be exposed from the locking holes 112. The exposure of the locking holes 112 allows external dust and liquids to enter the main housing 1 through the locking holes 112, increasing the risk of inverter failure. The exposed hooks 4 can also easily scratch the personnel installing the inverter.
[0053] In this embodiment, the dust cover 2 covers the card hole 112 and the card slot 111. For example, please refer to... Figure 2The mounting part 11 is flat, with the locking hole 112 and the locking groove 111 both exposed outwards from the side of the mounting part 11 facing the first direction X. The dust cover 2 is placed on the side of the mounting part 11 facing the first direction X and is adapted to the mounting part 11, thus covering the locking hole 112 and the locking groove 111. The dust cover 2 covers the locking hole 112 and the locking groove 111, improving the problem of external dust and liquid entering the main housing 1 through the locking hole 112 and the locking groove 111, enhancing the dust protection of the frequency converter, further improving the appearance of the frequency converter, and reducing the risk of frequency converter failure. Since the locking post 3 is located in the locking groove 111 and the locking hook 4 is located in the locking hole 112, when the dust cover 2 covers the locking hole 112 and the locking groove 111, the dust cover 2 also covers the locking post 3 and the locking hook 4, improving the problem that the exposed locking hook 4 and locking post 3 are prone to scratching workers.
[0054] In some embodiments, the mounting portion 11 is flat, the dust cover 2 is flat, the length of the dust cover 2 along the second direction Y is equal to the length of the mounting portion 11 along the second direction Y, and the width of the dust cover 2 along the third direction Z is equal to the width of the mounting portion 11 along the third direction Z.
[0055] It is understood that when the mounting part 11 is installed on the mounting part 11 via the locking post 3 and the locking hook 4, the mounting part 11 restricts the position of the dust cover 2 relative to the mounting part 11. For ease of description, in the embodiments of this application, the limitation of the dust cover 2 by the mounting part 11 along the first direction X, the second direction Y, and the third direction Z are used as examples for explanation.
[0056] For the limiting of the dust cover 2 along the second direction Y by the mounting part 11, please refer to Figures 2 to 4 The mounting part 11 is provided with a first abutting surface 1131 and a second abutting surface 1121. The second abutting surface 1121 is located in the latch hole 112, and the second abutting surface 1121 and the first abutting surface 1131 are arranged opposite to each other along the second direction Y. The dust cover 2 is provided with a first mating surface 21, and the latch 4 is provided with a second mating surface 43. The first mating surface 21 abuts against the first abutting surface 1131, and the second mating surface 43 abuts against the second abutting surface 1121, and the first mating surface 21 and the second mating surface 43 are arranged opposite to each other.
[0057] For example, please refer to Figure 2 and Figure 4 The mounting part 11 has a mounting groove 114. The inner wall of the mounting groove 114 includes a first abutting surface 1131, which faces away from the second direction Y. The inner wall of the slot 112 includes a second abutting surface 1121, which faces the second direction Y. The first abutting surface 1131 and the second abutting surface 1121 are disposed opposite to each other. Please refer to [link to relevant documentation]. Figure 3 and Figure 5The end face of the dust cover 2 facing the second direction Y includes a first mating surface 21, which abuts against the first abutting surface 1131 of the mounting portion 11. The side of the hook 4 away from the second direction Y includes a second mating surface 43, which abuts against the second abutting surface 1121 of the mounting portion 11. Thus, the first abutting surface 1131 and the second abutting surface 1121 of the mounting portion 11 clamp the dust cover 2 and the hook 4 together along the second direction Y, that is, the mounting portion 11 limits the dust cover 2 along the second direction Y. The second mating surface 43 is at least partially located on the rod portion 42 and can extend to the hook portion 41.
[0058] In some embodiments, the locking post 3 and the locking hook 4 are respectively disposed near the two ends of the dust cover 2 along the second direction Y, thereby enhancing the stability of the dust cover 2 installed on the main housing 1.
[0059] In some embodiments, please refer to Figure 5 The end of the hook 4 is provided with a first guide surface 44, which forms an angle with the second abutment surface 1121. When the hook 4 is inserted into the locking hole 112, the first guide surface 44 is used to contact the second abutment surface 1121 and guide the second abutment surface 1121 to contact the second mating surface 43. For example, please refer to Figure 5 The first guide surface 44 is parallel to the third direction Z, and the angle between the first guide surface 44 and the second mating surface 43 is greater than 180 degrees, that is, the angle between the first guide surface 44 and the second abutting surface 1121 is an acute angle. When the first guide surface 44 contacts the second abutting surface 1121 and the hook 4 moves relative to the mounting part 11 in the opposite direction of the first direction X, the reaction force of the second abutting surface 1121 on the first guide surface 44 drives the hook 4 to move relative to the mounting part 11 towards the second direction Y, so that the first mating surface 21 of the dust cover 2 moves closer to the first abutting surface 1131 of the mounting part 11 until the first mating surface 21 abuts against the first abutting surface 1131 of the mounting part 11, which is conducive to the dust cover 2 being installed in place. The first guide surface 44 is at least partially located in the hook part 41 and can extend to the rod part 42.
[0060] Since the dust cover 2 is installed on the mounting part 11, the first abutment surface 1131 and the second abutment surface 1121 of the mounting part 11 clamp the dust cover 2 and the hook 4 together along the second direction Y. Therefore, when installing the dust cover 2, the edge of the second mating surface 43 of the hook 4 will abut against the edge of the second abutment surface 1121 of the mounting part 11, preventing the hook 4 from entering the locking hole 112, making it difficult for the hook 4 to engage with the mounting part 11. However, the connection between the first guide surface 44 and the second mating surface 43 helps to guide the second abutment surface 1121 to contact the second mating surface 43, which helps to improve the problem of the hook 4 being difficult to engage with the mounting part 11.
[0061] For the limiting of the dust cover 2 along the first direction X by the mounting part 11, please refer to Figures 2 to 5 The outer surface of the mounting part 11 includes a third abutment surface 115, and the inner surface of the mounting part 11 includes a fourth abutment surface 116. The fourth abutment surface 116 and the third abutment surface 115 are arranged opposite to each other along the first direction X. The dust cover 2 is provided with a third mating surface 22, and the hook 4 includes a hook part 41. The hook part 41 is provided with a fourth mating surface 411. The third mating surface 22 abuts against the third abutment surface 115, and the fourth mating surface 411 abuts against the fourth abutment surface 116.
[0062] For example, please refer to Figures 2 to 5 The mounting portion 11 includes a third abutting surface 115 and a fourth abutting surface 116 on opposite sides along the first direction X. The dust cover 2 includes a third mating surface 22 on the side facing away from the second direction Y, and the hook portion 41 of the latch 4 includes a fourth mating surface 411 on the side facing the first direction X. The dust cover 2 abuts against the third abutting surface 115 of the mounting portion 11 via the third mating surface 22, and the latch 4 passes through the latch hole 112 and abuts against the fourth abutting surface 116 via the fourth mating surface 411. Thus, the latch 4 and the dust cover 2 clamp the mounting portion 11 along the first direction X, that is, the mounting portion 11 limits the dust cover 2 along the first direction X.
[0063] In some embodiments, please refer to Figure 4 The mounting part 11 is provided with a fifth abutment surface 1111, which is located in the slot 111. The fifth abutment surface 1111 and the third abutment surface 115 are arranged opposite to each other along the first direction X. Please refer to the following: Figure 5 The locking post 3 is provided with a fifth mating surface 31, which abuts against a fifth abutting surface 1111. Exemplarily, the inner wall of the locking groove 111 includes a fifth abutting surface 1111 facing away from the first direction X, and the side of the locking post 3 facing the first direction X includes the fifth mating surface 31. The locking post 3 abuts against the fifth abutting surface 1111 via the fifth mating surface 31, meaning the mounting portion 11 applies a force away from the first direction X towards the locking post 3. The dust cover 2 abuts against the third abutting surface 115 of the mounting portion 11 via a third mating surface 22. Therefore, the locking post 3 and the dust cover 2 clamp the mounting portion 11 along the first direction X, meaning the mounting portion 11 limits the dust cover 2 along the first direction X.
[0064] Along the second direction Y, the fifth abutment surface 1111, the third abutment surface 115, and the fourth abutment surface 116 are arranged sequentially. That is, the mounting portion 11 applies a force opposite to the first direction X to both ends of the dust cover 2 along the second direction Y, and applies a force towards the first direction X to the middle of the dust cover 2. Therefore, the force exerted by the mounting portion 11 on the dust cover 2 creates a bending moment. When the dust cover 2 is installed on the mounting portion 11, the dust cover 2 bends under the bending moment, and the dust cover 2 recovers its deformation under its own elasticity, ensuring that the fifth mating surface 31, the third mating surface 22, and the fourth mating surface 411 always abut against the mounting portion 11, which helps to improve the problem of loosening when the dust cover 2 is installed on the mounting portion 11.
[0065] For the limiting of the dust cover 2 along the third direction Z of the mounting section 11, please refer to Figure 2 and Figure 3 The mounting part 11 is provided with a sixth abutment surface 1132 and a seventh abutment surface 1133, which are arranged opposite to each other along the third direction Z. The dust cover 2 is provided with a sixth mating surface 231 and a seventh mating surface 241, which abut against the sixth abutment surface 1132 and the seventh mating surface 241 abut against the seventh abutment surface 1133, and are arranged opposite to each other.
[0066] For example, please refer to Figure 2 and Figure 3 The inner wall of the mounting groove 114 includes a sixth abutment surface 1132 and a seventh abutment surface 1133 arranged opposite each other along the third direction Z. The dust cover 2 has a first limiting post 23 and a second limiting post 24 on the side facing away from the first direction X. The first limiting post 23 and the second limiting post 24 are spaced apart along the third direction Z. The first limiting post 23 has a sixth mating surface 231 on the side facing away from the second limiting post 24, and the second limiting post 24 has a sixth mating surface 231 on the side facing away from the first limiting post 23. The seventh mating surface 241, the first limiting post 23 abuts against the sixth abutting surface 1132 of the mounting part 11 through the sixth mating surface 231, and the second limiting post 24 abuts against the seventh abutting surface 1133 of the mounting part 11 through the seventh mating surface 241. Thus, the sixth abutting surface 1132 and the seventh abutting surface 1133 of the mounting part 11 clamp the first limiting post 23 and the second limiting post 24 of the dust cover 2 in the third direction Z, that is, the mounting part 11 limits the dust cover 2 in the third direction Z.
[0067] In some embodiments, please refer to Figure 3 The dust cover 2 is provided with multiple first limiting posts 23 and multiple second limiting posts 24. The multiple first limiting posts 23 and multiple second limiting posts 24 are all spaced apart along the second direction Y, which helps to enhance the effect of the installation part 11 in limiting the dust cover 2 along the third direction Z.
[0068] Understandably, the dust cover 2 obstructs the locking hole 112, causing it to also obstruct the locking hook 4, making it difficult to apply external force to the hook 4 and thus difficult to disconnect the hook 4 from the mounting part 11. To improve this problem, please refer to... Figure 3 and Figure 5 The hook 4 also includes a pressing part 45, which is disposed on the rod portion 42 and exposed outside the mounting portion 11 and the dust cover 2. The pressing part 45 is used to drive the rod portion 42 to deform when pressed, so that the fourth mating surface 411 disengages from the fourth abutment surface 116. Exemplarily, the pressing part 45 and the hook portion 41 protrude from the rod portion 42 in the same direction parallel to the third direction Z, and the pressing part 45 is exposed on the side of the dust cover 2 along the third direction Z. Thus, the pressing part 45 can be pressed from outside the main housing 1 and the dust cover 2 to apply external force to the rod portion 42. When the pressing part 45 is pressed toward the rod portion 42 in the direction parallel to the third direction Z, the rod portion 42 bends and drives the hook portion 41 to move relative to the mounting portion 11 in the direction parallel to the third direction Z until the hook portion 41 disengages from the fourth abutment surface 116, so that the hook 4 can be pulled out from the locking hole 112. After the hook 4 is pulled out of the hole 112, the pin 3 is pulled out of the slot 111 to remove the dust cover 2 from the mounting part 11, thus improving the problem that the hook 4 is difficult to disconnect from the mounting part 11.
[0069] Understandably, when installing the dust cover 2, the locking pin 3 is first inserted into the locking slot 111, and then the locking hook 4 is inserted into the locking hole 112. However, when the locking hook 4 is inserted into the locking hole 112, the hook portion 41 may interfere with the edge of the locking hole 112, preventing the hook 4 from being inserted. In this case, pressing the pressing part 45 can drive the hook portion 41 to move relative to the mounting part 11 along the first direction X, so that the projection of the hook portion 41 along the first direction X coincides with the locking hole 112, allowing the hook portion 41 to pass through the locking hole 112 in the opposite direction of the first direction X. After the hook portion 41 passes through the locking hole 112, the pressing part 45 is released, the rod portion 42 returns to its original shape, and the hook portion 41 abuts against the fourth abutting surface 116 of the mounting part 11 via the fourth mating surface 411.
[0070] Alternatively, in some other embodiments, please refer to Figure 5 The hook portion 41 is provided with a second guide surface 412, and the mounting portion 11 is provided with a guide mating surface 1122. The guide mating surface 1122 is located in the locking hole 112, and the included angle between the second guide surface 412 and the guide mating surface 1122 is an acute angle. The second guide surface 412 is used to contact the guide mating surface 1122 when the hook 4 is inserted into the locking hole 112, so as to drive the rod portion 42 to deform and allow the hook portion 41 to pass through the locking hole 112. For example, please refer to Figure 5The second guide surface 412 is parallel to the second direction Y, and the angle between the second guide surface 412 and the fourth mating surface 411 is greater than 270 degrees, that is, the angle between the second guide surface 412 and the guide mating surface 1122 is an acute angle. When the second guide surface 412 contacts the guide mating surface 1122 and the hook 4 moves relative to the mounting part 11 in the opposite direction of the first direction X, the reaction force of the guide mating surface 1122 on the second guide surface 412 drives the rod part 42 to bend, thereby driving the hook part 41 to move relative to the mounting part 11 in the third direction Z parallel to the third direction, so that the projection of the hook part 41 along the first direction X coincides with the locking hole 112, and the hook part 41 can pass through the locking hole 112 in the opposite direction of the first direction X. After the hook part 41 passes through the locking hole 112, the hook part 41 disengages from the second guide surface 412, the rod part 42 returns to its deformed state, and the hook part 41 abuts against the fourth abutting surface 116 of the mounting part 11 through the fourth mating surface 411.
[0071] In some embodiments, please refer to 2 and Figure 4 The mounting part 11 is provided with a third guide surface 1134 and a fourth guide surface 1135. The third guide surface 1134 and the fourth guide surface 1135 are arranged at intervals along the third direction Z. The end of the third guide surface 1134 facing away from the second direction Y is connected to the sixth abutment surface 1132, and the end of the fourth guide surface 1135 facing away from the second direction Y is connected to the seventh abutment surface 1133. The third guide surface 1134 and the fourth guide surface 1135 are located between the plane where the sixth abutment surface 1132 is located and the plane where the seventh abutment surface 1133 is located. For example, please refer to Figure 2 and Figure 4 The inner wall of the mounting groove 114 includes a third guide surface 1134 and a fourth guide surface 1135. The two ends of the third guide surface 1134 are respectively connected to the sixth abutment surface 1132 and the first abutment surface 1131. The two ends of the fourth guide surface 1135 are respectively connected to the seventh abutment surface 1133 and the first abutment surface 1131. The angle between the third guide surface 1134 and the sixth abutment surface 1132 is an obtuse angle, and the angle between the fourth guide surface 1135 and the seventh abutment surface 1133 is an obtuse angle. When the locking pin 3 is inserted into the locking groove 111 along the second direction Y, the dust cover 2 will contact one of the third guide surface 1134 and the fourth guide surface 1135, and move parallel to the third third direction Z under the guidance of the third guide surface 1134 or the fourth guide surface 1135 until the dust cover 2 contacts the third guide surface 1134 and the fourth guide surface 1135 at the same time, so as to align the dust cover 2 relative to the mounting part 11 along the third third direction Z.
[0072] Alternatively, in some embodiments, the connecting post 5 is used to contact the third guide surface 1134 or the fourth guide surface 1135. It is understood that the third guide surface 1134 extends in the opposite direction of the first direction X into one through hole 113, and the fourth guide surface 1135 extends in the opposite direction of the first direction X into another through hole 113; there are two connecting posts 5 and two retaining posts 3, each used to be inserted into one of the two through holes 113 and to contact the third guide surface 1134 and the fourth guide surface 1135 respectively. When the locking pin 3 is inserted into the locking slot 111 along the second direction Y, one of the two connecting pins 5 will contact one of the third guide surface 1134 and the fourth guide surface 1135, and move parallel to the third direction Z under the guidance of the third guide surface 1134 or the fourth guide surface 1135 until the two connecting pins 5 contact the third guide surface 1134 and the fourth guide surface 1135 respectively, so as to align the dust cover 2 relative to the mounting part 11 along the third direction Z.
[0073] This application embodiment also provides a frequency converter (not shown), which includes a frequency converter (not shown), a terminal socket (not shown), and a housing structure 100. The frequency converter is disposed within the main housing 1, which protects the frequency converter and provides a mounting base for it. The terminal socket is disposed in the mounting portion 11 and is electrically connected to the frequency converter, thereby enabling external electrical connection for power input and output. Since the dust cover 2 covers the mounting portion 11, it also covers the terminal socket, providing dust protection and reducing protruding structures on the outer surface of the frequency converter, thus improving its appearance. The structural features and beneficial effects of the housing structure of the frequency converter will not be elaborated further here.
[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A housing structure, characterized in that, include: The main housing has a mounting portion on its side along a first direction. The mounting portion has a slot and a hole. The slot extends along a second direction, and the hole extends along the first direction. A dust cover is provided on the mounting part, and the dust cover covers the card hole and the card slot; A locking post is connected to the dust cover, the locking post extends along the second direction, and the locking post is disposed in the locking groove; A hook is connected to the dust cover, the hook extends along the first direction, the hook is located in the locking hole and engages with the mounting part; The second direction is perpendicular to the first direction.
2. The housing structure according to claim 1, characterized in that, The mounting part is provided with a first abutting surface and a second abutting surface, the second abutting surface is located in the card hole, and the second abutting surface and the first abutting surface are arranged opposite to each other along the second direction; The dust cover has a first mating surface, and the hook has a second mating surface. The first mating surface abuts against the first abutting surface, and the second mating surface abuts against the second abutting surface. The first mating surface and the second mating surface are arranged opposite to each other.
3. The housing structure according to claim 2, characterized in that, The end of the hook is provided with a first guide surface, which forms an angle with the second abutment surface; When the hook is inserted into the hole, the first guide surface is used to contact the second abutment surface and guide the second abutment surface to contact the second mating surface.
4. The housing structure according to claim 1, characterized in that, The outer surface of the mounting part includes a third abutting surface, and the inner surface of the mounting part includes a fourth abutting surface. The fourth abutting surface and the third abutting surface are disposed opposite to each other along the first direction. The dust cover has a third mating surface, the hook includes a hook portion, the hook portion has a fourth mating surface, the third mating surface abuts against the third abutting surface, and the fourth mating surface abuts against the fourth abutting surface.
5. The housing structure according to claim 4, characterized in that, The hook portion is provided with a second guide surface, and the mounting portion is provided with a guide mating surface. The guide mating surface is located in the card hole, and the angle between the second guide surface and the guide mating surface is an acute angle. The hook also includes a rod that connects the dust cover and the hook. The second guide surface is used to contact the guide mating surface when the hook is inserted into the locking hole, so as to drive the rod to deform and allow the hook to pass through the locking hole.
6. The housing structure according to claim 4, characterized in that, The hook also includes a rod and a pressing part. The rod connects the dust cover and the hook. The pressing part is located on the rod and is exposed outside the mounting part and the dust cover. The pressing part is used to drive the rod to deform when pressed, so that the fourth mating surface disengages from the fourth abutting surface.
7. The housing structure according to claim 4, characterized in that, The mounting part is provided with a fifth abutment surface, which is located in the slot, and the fifth abutment surface and the third abutment surface are arranged opposite to each other along the first direction; The locking post is provided with a fifth mating surface, and the fifth mating surface abuts against the fifth abutting surface; Along the second direction, the fifth abutment surface, the third abutment surface, and the fourth abutment surface are arranged in sequence.
8. The housing structure according to claim 1, characterized in that, The mounting part is provided with a sixth abutment surface and a seventh abutment surface, and the sixth abutment surface and the seventh abutment surface are arranged opposite to each other along a third direction; The dust cover has a sixth mating surface and a seventh mating surface. The sixth mating surface abuts against the sixth abutting surface, and the seventh mating surface abuts against the seventh abutting surface. The sixth mating surface and the seventh mating surface are arranged opposite to each other. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.
9. The housing structure according to claim 8, characterized in that, The mounting part is provided with a third guide surface and a fourth guide surface, which are arranged at intervals along the third direction. The end of the third guide surface away from the second direction is connected to the sixth abutment surface, and the end of the fourth guide surface away from the second direction is connected to the seventh abutment surface. The third guide surface and the fourth guide surface are located between the plane where the sixth abutment surface is located and the plane where the seventh abutment surface is located.
10. A frequency converter, characterized in that, include: The housing structure as described in any one of claims 1 to 9; The frequency converter is located inside the main housing; A terminal socket is provided at the mounting part, and the terminal socket is electrically connected to the frequency converter.