Frequency converter backboard and frequency converter

Abstract

The embodiment of the invention provides a frequency converter backboard, which comprises a backboard body and a guide part, and is characterized in that the backboard body is provided with a side plate and a bottom plate; the guide part is mounted on the inner wall of the side plate of the back plate body; one end of the guide part is aligned with a screw hole in a bottom plate of the back plate body, the other end of the guide part can be aligned with a screw hole in a core module after the screw hole of the back plate body is aligned with the screw hole of the core module, and the guide part can bear a screw when the back plate body and the core module are assembled. The guide plate is used for guiding a screw, and the screw is used for connecting a screw hole in a bottom plate of the back plate body with a screw hole in the core module; the core module is a circuit functional module assembled with the frequency converter backboard. According to the invention, the installation of the screw can be guided in the installation process of the frequency converter backboard.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converters, and in particular to a frequency converter backplane and a frequency converter. Background Art

[0002] During inverter assembly, the core module is connected to the backplane with screws. The screw installation path is relatively long, approximately 114.5mm. Furthermore, because the backplane is opaque and has a small opening, it's common for the screws to misalign with the core module's screw holes during installation. Summary of the Invention

[0003] An embodiment of the present invention provides a frequency converter back plate and a frequency converter, which can guide the installation of screws during the installation process of the frequency converter back plate.

[0004] According to a first aspect, an embodiment of the present invention provides a frequency converter backplane comprising a backplane body and a guide component, wherein:

[0005] The backboard body has side panels and a bottom panel;

[0006] The guide component is mounted on the inner wall of the side plate of the back plate body;

[0007] One end of the guide component is aligned with the screw hole on the bottom plate of the backplane body, and the other end of the guide component can be aligned with the screw hole on the core module after the screw holes of the backplane body and the core module are aligned. The guide component can carry screws when assembling the backplane body and the core module to guide the screws. The screws are used to connect the screw holes on the bottom plate of the backplane body and the screw holes on the core module; the core module is a circuit functional module assembled with the inverter backplane.

[0008] According to the second aspect, an inverter provided by an embodiment of the present invention includes a core module and the inverter backplane provided by the first aspect, the screw holes on the core module and the screw holes on the bottom plate of the backplane body of the inverter backplane are connected by screws, and the screws are located in the guide component.

[0009] The inverter backplane and inverter provided by the embodiments of the present invention each have at least the following technical effects, either individually or in combination:

[0010] (1) During assembly, the guide components can guide the screws. Even if the inverter back panel is opaque and the screw holes are small, the screws can be aligned with the screw holes of the core module. Moreover, if a screw falls during installation, it will fall into the guide components instead of falling into other areas. Therefore, there is no need to dismantle the entire inverter back panel to remove the screws. Instead, the inverter back panel can be turned upside down and the screws will fall out. This can improve the assembly efficiency of the inverter and improve the maintenance experience.

[0011] (2) In one embodiment, because the short side of the T-shaped slot is clamped on the short side of the T-shaped bending member on the guide component, the short side of the bending member cannot move left or right due to the restriction of the short side of the slot, that is, the lateral movement of the bending member is restricted. Moreover, due to the restriction of the long side of the bending member and the guide component, while not moving up and down, it cannot move forward and backward.

[0012] (3) In one embodiment, a bending edge is provided on the inner wall of the side plate of the back plate body, and the height of the bending edge is matched with the height of the bending part along the central axis direction of the guide component, so that when the bending part is inserted into the slot, the guide component will not move longitudinally due to the limitation of the bending edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 is a schematic diagram of a side panel of a back panel body and a guide component mounted on the side panel from an external perspective in one embodiment of the present invention;

[0015] Figure 2 is a schematic diagram of a side panel of a back panel body and a guide component mounted on the side panel from an internal perspective in one embodiment of the present invention;

[0016] Figure 3 is a bottom view of the bottom plate of the back plate body in one embodiment of the present invention;

[0017] Figure 4 is a schematic diagram of a cross section of a back plate body according to one embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the overall structure of a guide component in one embodiment of the present invention;

[0019] Figure 6is a schematic diagram of a bending part of a guide component in one embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of a state in which the bending member of the guide component is inserted into the slot on the back plate body in one embodiment of the present invention;

[0021] Figure 8 Schematic diagram of the positions of the bent edges and bent parts on the back plate body in one embodiment of the present invention;

[0022] Reference numerals:

[0023] DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In a first aspect, an embodiment of the present invention provides an inverter backplane.

[0026] See also Figure 1 、 Figure 2 and Figure 3 The inverter backplane includes a backplane body and a guide component 20, wherein:

[0027] The back panel body has side panels 10 and a bottom panel 30;

[0028] The guide member 20 is mounted on the inner wall 11 of the side plate 10 of the back plate body;

[0029] One end of the guide component 20 is aligned with the screw hole 31 on the bottom plate 30 of the backplane body, and the other end of the guide component 20 can be aligned with the screw hole on the core module after the screw holes of the backplane body and the core module are aligned. The guide component 20 can carry screws when assembling the backplane body and the core module to guide the screws. The screws are used to connect the screw holes 31 on the bottom plate 30 of the backplane body and the screw holes on the core module; the core module is a circuit functional module assembled with the inverter backplane.

[0030] It is understandable that when assembling the inverter, the inverter backplane and the core module need to be assembled, and screw holes are provided on both the inverter backplane and the core module, so the inverter backplane and the core module can be connected by screws and screw holes to achieve assembly of the two.

[0031] Among them, the backplane body has side panels and a bottom panel, the screw holes on the backplane body are opened on the bottom panel, the guide component is installed on the inner wall of the side panel, one end of the guide component is aligned with the screw holes on the bottom panel, and when the screw holes of the backplane body and the screw holes of the core module are aligned, the other end of the guide component is aligned with the screw holes on the core module.

[0032] The core module is a circuit functional module of the inverter and can be any one of a variety of functional modules.

[0033] During assembly, first align the screw holes of the backplane body and the core module, then insert the screws into the screw holes of the bottom plate of the backplane body. When rotating the screws, the screws will be restricted by the guide components and screwed into the screw holes of the core module and locked, thus completing the assembly of the backplane body and the core module.

[0034] Wherein, the screw holes on the bottom plate of the back plate body may be located at the edge of the bottom plate.

[0035] The guide component may be a sheet metal part.

[0036] As can be seen, based on the inverter backplane provided by the embodiment of the present invention, the guide component can guide the screws during assembly. Even if the inverter backplane is opaque and the screw holes are small, the screws can be aligned with the screw holes of the core module. Moreover, if a screw falls during installation, it will fall into the guide component instead of falling into other areas. Therefore, there is no need to dismantle the entire inverter backplane to remove the screw. Instead, the inverter backplane can be turned upside down, and the screws will fall out. This can improve the assembly efficiency of the inverter and enhance the maintenance experience.

[0037] In one embodiment, see Figure 4 The backplane body may include two side panels 10 arranged opposite to each other, and the cross-section of the backplane body is U-shaped; the inverter backplane includes at least one pair of guide components; wherein, in each pair of guide components, one guide component is installed on the inner wall of one side panel of the backplane body, and the other guide component is installed on the inner wall of the other side panel of the backplane body.

[0038] Since the back panel body comprises two opposing side panels and a bottom panel, the back panel body has a U-shaped cross-section. At least one pair of guide members is provided on the inner walls of the side panels of the back panel body. For example, three pairs of screw holes are provided on the bottom panel, so three pairs of guide members can be provided. In each pair, one guide member is mounted on the inner wall of one side panel, and the other guide member is mounted on the inner wall of the other side panel. In practice, the position and number of guide members on the inner walls of the side panels are determined by the position and number of screw holes in the bottom panel.

[0039] In this way, the inverter backplane and core module can be installed together more firmly.

[0040] In one embodiment, a bending part is provided on the guide component, and a card slot is provided on the side panel of the back panel body; wherein, the bending part of the guide component can be inserted into the card slot on the back panel body, thereby realizing the installation of the guide component on the inner wall of the side panel of the back panel body.

[0041] A method for mounting a guide component and the inner wall of a side panel is provided. The guide component is provided with a bending piece, which is a portion of the guide component that is bent to form a clip. A clip slot is provided on the side panel of the back panel body, and the bending piece is inserted into the clip slot to mount the guide component to the back panel body.

[0042] For further information, see Figure 5 、 Figure 6 and Figure 7 The bending part 23 and the slot 12 are both T-shaped; wherein, the long side of the T-shape of the bending part can be inserted into the long side of the T-shape of the slot, and after the guide component slides, the short side of the T-shape of the slot can clamp the short side of the T-shape of the bending part on the guide component, thereby realizing the insertion of the bending part into the slot.

[0043] That is, the shapes of the bending part and the slot are the same, but the bending part is bent from the guide part, and the slot is formed by opening on the back panel body. It can be seen that the directions of the bending part and the slot are not the same, that is, the slot is located in the plane where the back panel body is located, and there is an angle between the bending part and the guide part, so the bending part can be clamped on the back panel body.

[0044] Specifically, the bending part is T-shaped, that is, the bending part includes a long side and a short side, and the long side and the short side are relative. The card slot also includes a short side and a long side. The short side of the T-shaped bending part refers to the vertical side of the "T" shape, and the long side of the T-shaped bending part refers to the horizontal side of the "T" shape. First, insert the long side of the bending part into the long side of the card slot. After the long side of the bending part passes through the long side of the card slot, slide the bending part downward and slide it to the bottom so that the short side of the bending part is stuck on the short side of the card slot. At this time, the bending part is inserted into the card slot.

[0045] Because the short side of the T-shaped slot is finally clamped on the short side of the T-shaped bending part on the guide component, the short side of the bending part cannot move left or right due to the restriction of the short side of the slot, that is, the lateral movement of the bending part is restricted. Moreover, due to the restriction of the long side of the bending part and the guide component, it cannot move forward or backward while preventing it from moving up and down.

[0046] For further information, see Figure 5 The guide component may include a hollow column 21 with a longitudinal opening and two flanges 22 arranged at the longitudinal opening, and the cross section of the guide component is Ω-shaped.

[0047] In other words, the guide component can be a hollow column with a longitudinal opening, with two flanges at the longitudinal opening, resulting in an Ω-shaped cross-section. Since the screw is also a columnar structure, a hollow column is a good fit for the guide component. Furthermore, the two flanges at the longitudinal opening form a flat surface, making it very easy to install the guide component on the backplane body.

[0048] Furthermore, the bending member is provided on at least one flange 22 of the guide component.

[0049] That is to say, the bending part is set on the flange of the guide component, so that when the bending part is inserted into the slot, the plane where the flange is located and the plane where the backboard body is located are in contact, so that the installation between the backboard body and the guide component is firm.

[0050] In one embodiment, see Figure 8 The side panel of the back panel body may have a bending edge 13; the height of the bending member in the longitudinal direction of the flange is adapted to the height of the bending edge 13 of the back panel body, so that after the bending member is inserted into the slot, the longitudinal movement of the guide component is limited.

[0051] The height of the bent member in the longitudinal direction of the flange refers to the height of the bent member along the central axis of the guide member. In other words, the bent edge is provided on the inner wall of the side panel of the back panel body, and the height of the bent edge matches the height of the bent member along the central axis of the guide member. Thus, when the bent member is inserted into the slot, the guide member will not move longitudinally due to the restriction of the bent edge.

[0052] It can be seen that the guide component with the above structure will not move forward and backward, left and right, or up and down due to some restrictions, and a reliable connection of the guide component is achieved without adding any connecting accessories.

[0053] In the second aspect, an embodiment of the present invention provides an inverter, which includes a core module and the inverter backplane provided in the first aspect, wherein the screw holes on the core module and the screw holes on the bottom plate of the backplane body of the inverter backplane are connected by screws, and the screws are located in the guide component.

[0054] That is, after aligning the screw holes of the core module with the screw holes on the bottom plate of the backplane body, the screws are guided by the guide components to connect the screw holes of the core module with the screw holes on the bottom plate of the backplane body, thereby realizing the connection between the core module and the inverter backplane.

[0055] In one embodiment, the core module has a bent edge, and the screw hole on the core module is located on the bent edge of the core module.

[0056] Since different core modules may have different sizes, in order to align the screw holes of the core module with the screw holes on the bottom plate of the backplane body, a bent edge can be provided on the core module. In this way, the screw holes of the core module are located on the bent edge of the core module, which improves the convenience and versatility of assembly.

[0057] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, the device embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0058] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A frequency converter backplane, characterized in that: It includes a back plate body and a guide component, wherein: The backboard body has side panels and a bottom panel; The guide component is mounted on the inner wall of the side plate of the back plate body; One end of the guide component is aligned with the screw hole on the bottom plate of the backplane body, and the other end of the guide component can be aligned with the screw hole on the core module after the screw holes of the backplane body and the core module are aligned. The guide component can carry screws when assembling the backplane body and the core module to guide the screws. The screws are used to connect the screw holes on the bottom plate of the backplane body and the screw holes on the core module; the core module is a circuit functional module assembled with the inverter backplane.

2. The inverter backplane according to claim 1, characterized in that: The backboard body comprises two side panels arranged opposite to each other, and the cross section of the backboard body is U-shaped; The inverter backplane includes at least one pair of guide components; wherein, in each pair of guide components, one guide component is installed on the inner wall of one side panel of the backplane body, and the other guide component is installed on the inner wall of the other side panel of the backplane body.

3. The inverter backplane according to claim 1, characterized in that: A bending part is provided on the guide component, and a card slot is provided on the side plate of the back panel body; wherein the bending part of the guide component can be inserted into the card slot on the back panel body, thereby realizing the installation of the guide component on the inner wall of the side plate of the back panel body.

4. The inverter backplane according to claim 3, characterized in that: The bending part and the slot are both T-shaped; wherein, the long side of the T-shape of the bending part can be inserted into the long side of the T-shape of the slot, and after the guide part slides, the short side of the T-shape of the slot can clamp the short side of the T-shape of the bending part on the guide part, thereby realizing the insertion of the bending part into the slot.

5. The inverter backplane according to claim 4, characterized in that: The guide component comprises a hollow column with a longitudinal opening and two flanges arranged at the longitudinal opening. The cross section of the guide component is Ω-shaped.

6. The inverter backplane according to claim 5, characterized in that: The bending part is arranged on at least one flange of the guide component.

7. The inverter backplane according to claim 6, characterized in that: The side panel of the back panel body has a bent edge; the height of the bending member in the longitudinal direction of the flange is adapted to the height of the bent edge of the back panel body, so that after the bending member is inserted into the slot, the longitudinal movement of the guide component is limited.

8. The inverter backplane according to claim 1, characterized in that: The screw holes on the bottom plate of the back plate body are located at the edge of the bottom plate.

9. A frequency converter, characterized in that: It comprises a core module and the inverter backplane according to any one of claims 1 to 8, wherein the screw holes on the core module and the screw holes on the bottom plate of the backplane body of the inverter backplane are connected by screws, and the screws are located in the guide component.

10. The frequency converter according to claim 9, characterized in that: The core module has a bent edge, and the screw hole on the core module is located on the bent edge of the core module.

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