Locking device

Abstract

The utility model provides a locking device which is arranged on an electric appliance unit. The locking device comprises a movable part and a buckling part, the movable part is arranged adjacent to the front end of the electric appliance unit, and the buckling part is arranged on the movable part and is allowed to protrude outwards from a bottom plate or a top plate of the electric appliance unit; the movable part maintains the buckling part to penetrate through the bottom plate or the top plate to be meshed with the buckling through groove in the case containing seat, so that the electric appliance unit is locked on the case containing seat.

Description

Technical Field

[0001] This utility model relates to the technical field of locking devices, and more particularly to a locking device applied to a power supply to solve the space utilization problem of electrical units. Background Technology

[0002] In modern daily life, many electronic devices require power adapters to provide the necessary power. Taking a server power supply unit as an example, the power supply unit is typically secured in a server rack using locking devices. Since these locking devices are usually installed inside the power supply unit's casing, they occupy internal space.

[0003] In existing technology, locking devices mainly include a spring plate and a latch. The spring plate is installed on the side panel of the housing, while the latch is set perpendicular to the spring plate, with the pressing direction perpendicular to the length direction of the spring plate. Pressing causes the spring plate to bend and deform, which in turn moves the latch, allowing the power supply unit to be inserted into or removed from the rack housing. Since the latch needs to be pressed during the insertion and removal of the power supply unit, a certain amount of space needs to be reserved in the width direction inside the power supply unit's housing to prevent interference between the locking device and other parts inside the power supply unit's housing. Furthermore, since the locking between the power supply unit and the rack housing is achieved through the locking device, the installation of the locking device also occupies space in the rack housing and limits the width of the power supply unit. For multiple rack housings, adjacent power supply units are separated by vertical partitions. However, since adjacent power supply units should not interfere with each other, the thickness of the partitions also occupies a certain width space, thus affecting the overall space utilization.

[0004] On the other hand, server power supply units are increasingly moving towards smaller size and higher power, and some power supply units can no longer meet the heat dissipation requirements with a single fan. Therefore, it is necessary to use two fans, but two fans placed side by side horizontally will encroach on the movement space of the locking device.

[0005] Therefore, how to develop a locking device for electrical units to solve the space utilization problem of electrical units is a pressing issue that needs to be addressed in this field. Utility Model Content

[0006] The purpose of this invention is to provide a locking device for an electrical unit. The locking device is located on the front side of the electrical unit's housing, on the bottom or top plate of the inner surface of the housing. The fixing plate and elastic plate of the locking device can be integrally formed from metal sheets, and the structure can be reinforced by connecting protrusions or ribs. The locking device can be fixed to the side plate, bottom plate, or top plate of the electrical unit's housing via the fixing plate. Since the locking device is fixed to the electrical unit's housing only by the fixing plate at one end, and the elastic plate extends along the bottom or top plate of the housing, it saves space in the width direction of the electrical unit, which is beneficial for arranging dual fans in the width direction of the housing. It can also utilize space in the length direction of the electrical unit, improving the overall space utilization rate of the electrical unit. The end face of the fixing plate can fit against the side plate, top plate, or top plate of the electrical unit's housing, and is fixed with fasteners such as rivets. One end of the elastic plate is connected to the fixing plate, and its bottom surface is located at the front end of the electrical unit's housing and fits against the bottom or top plate inside the housing. The latching part and the pressing plate can also be integrally formed from a metal sheet and then fixed perpendicularly to the elastic plate by fasteners such as rivets, and fixed to an offset section away from the fixed plate. The elastic plate can be pre-bent, and after the fixed plate is fixed to the side plate, bottom plate, or top plate of the housing, the elastic plate can be raised to abut against the bottom or top plate of the housing. Furthermore, the bottom or top plate of the electrical unit housing has an opening for the latching part to extend, allowing it to further engage with the latching slot of the chassis housing, locking the electrical unit onto the chassis housing. By pressing / lifting the pressing plate, the operator moves the elastic plate and the latching part on the elastic plate, releasing the interference between the latching part and the chassis housing, disengaging the latching part from the latching slot, and allowing the electrical unit to detach from the chassis housing. A limiting plate can be provided on the bottom or top plate of the electrical unit corresponding to the locking device, restricting the movement of the locking device in the electrical unit's installation direction, while the dual-fan module and the locking device do not overlap or interfere with each other in the installation direction. The locking device of this invention effectively utilizes the space in both the width and length directions inside the electrical unit, thereby improving the overall space utilization rate of the electrical unit. On the other hand, when the locking device is fixed to the side panel of the housing via the fixing plate, the pre-bent elastic plate is perpendicular to the fixing plate after installation and is located at the bottom / top of the power supply housing, further enhancing the impact resistance of the locking device and making it less prone to shaking.

[0007] To achieve the aforementioned objectives, this utility model provides a locking device disposed on an electrical unit. The locking device includes a movable part and a latching part. The movable part is disposed adjacent to the front end of the electrical unit, and the latching part is disposed on the movable part, allowing it to protrude outward from the bottom plate or top plate of the electrical unit. When the electrical unit is inserted into a chassis housing along a first direction, the movable part maintains the latching part through the bottom plate or top plate and engaging with the latching through groove on the chassis housing, thereby locking the electrical unit onto the chassis housing.

[0008] In one embodiment, the movable part includes a fixed plate, an elastic plate, and a pressing plate. The fixed plate is fixed to the side plate of the electrical unit along a second direction, or to the bottom plate or top plate of the electrical unit along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; the elastic plate extends along the third direction and is disposed on the bottom plate or top plate, and has a first end and a second end, the first end being connected to the fixed plate; the pressing plate connects the latching part to the second end of the elastic plate, protrudes from the front end of the electrical unit, and allows the elastic plate to be bent under force and drive the latching part to disengage from the latching slot and be housed in the bottom plate or top plate, wherein when the latching part disengages from the latching slot, the electrical unit is allowed to disengage from the chassis housing.

[0009] In one embodiment, the electrical unit includes one of a power supply unit (PSU), a battery backup unit (BBU), and a capacitor backup unit (CBU).

[0010] In one embodiment, when the electrical unit is locked in the chassis housing, one rear end of the electrical unit is electrically connected to the chassis housing, and the front end and the rear end are two opposite ends of the first direction.

[0011] In one embodiment, the fixing plate is fixed to the side plate, bottom plate or top plate by a fastener.

[0012] In one embodiment, the fixing plate and the elastic plate are integrally formed from metal sheets.

[0013] In one embodiment, the electrical unit further includes a limiting plate extending along a third direction on the bottom plate or the top plate, perpendicular to the bottom plate or the top plate, protruding from the outside to the inside, and disposed on one side adjacent to the elastic plate to restrict the movement of the elastic plate in the first direction.

[0014] In one embodiment, the elastic plate further includes a folded edge structure adjacent to a side plate of the elastic plate.

[0015] In one embodiment, the elastic plate has a first side and a second side that are opposite to each other, with the first side close to the bottom plate or the top plate.

[0016] In one embodiment, the elastic plate further includes a rib disposed on the second surface of the elastic plate and extending in a third direction.

[0017] In one embodiment, the elastic plate further includes an offset segment located at the second end, the offset segment being offset toward the second surface to form a step difference, and a pressing plate connecting the first surface of the offset segment.

[0018] In one embodiment, the pressing plate is fixed to the first surface of the offset segment by a fastener.

[0019] In one embodiment, the latching portion has a protruding height relative to the first surface of the elastic plate, the protruding height ranging from 2 mm to 4 mm.

[0020] In one embodiment, the pressing plate further includes a pressing portion that is offset from the first surface toward the second surface to form a step.

[0021] In one embodiment, the pressing part is displaced from the first surface toward the second surface by force, resisting the elastic restoring force of the elastic plate and causing the latching part at the second end to disengage from the latching groove.

[0022] In one embodiment, the elastic plate further includes a bending portion disposed adjacent to the first end, wherein the first surface is pre-bent so that when the fixing plate is fixed to the side plate, the first surface of the elastic plate abuts against the bottom plate or the top plate, and provides elastic force to maintain the buckle portion penetrating the bottom plate.

[0023] In one embodiment, the locking device further includes a connecting protrusion disposed between the first end of the fixed plate and the elastic plate.

[0024] In one embodiment, the electrical unit includes at least one fan module disposed between a side panel and an opposite side panel, adjacent to the front end and arranged in a third direction.

[0025] In one embodiment, the locking device and the fan module are arranged along a first direction.

[0026] In one embodiment, the latch and the pressing plate are integrally formed from a metal sheet.

[0027] In one embodiment, the pressing plate is fixed to the second end of the elastic plate by a fastener.

[0028] The beneficial effects of this utility model are that its embodiments provide a locking device for electrical units to solve the space utilization problem of power supply units, battery backup units, or capacitor backup units. By setting up the locking device of this utility model, the space in the width direction of the electrical unit can be fully utilized to achieve locking of the electrical unit in the chassis, while improving the space utilization rate of the electrical unit. Furthermore, the pre-bent elastic plate remains perpendicular to the fixed plate after installation and is set at the bottom / top of the power supply housing, further enhancing the impact resistance of the locking device and making it less prone to shaking. Attached Figure Description

[0029] The following detailed description of the present invention and the schematic diagrams of the embodiments are intended to enable those skilled in the art to fully understand the above content, and are not intended to limit the present invention.

[0030] Figure 1 The schematic diagram shows a three-dimensional structure of the electrical unit locked to the chassis housing by a locking device in an embodiment of the present invention.

[0031] Figure 2 The schematic diagram shows a three-dimensional structural view of the electrical unit combined with the locking device in an embodiment of the present invention.

[0032] Figure 3 The diagram schematically illustrates an exploded view of the internal components of the electrical unit corresponding to the locking device in an embodiment of the present invention.

[0033] Figure 4 The diagram schematically shows the front view of the locking device in an embodiment of the present invention.

[0034] Figure 5 This schematically illustrates a perspective view of the locking device fixed to the electrical unit in an embodiment of the present invention.

[0035] Figure 6 The schematic diagram shows a front view of the locking device fixed to the electrical unit in an embodiment of the present invention.

[0036] Figure 7 This schematic diagram illustrates how the electrical unit is locked to the housing housing via a locking device in an embodiment of the present invention.

[0037] Figure 8 This schematic diagram illustrates how the locking device releases interference in an embodiment of the present invention, allowing the electrical unit to move out of its corresponding housing.

[0038] Figure 9 A perspective view of the locking device in another embodiment of the present invention is shown schematically.

[0039] Figure 10 The diagram schematically illustrates a perspective view of the locking device in another embodiment of the present invention. Detailed Implementation

[0040] Some typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different ways, all of which do not depart from the scope of this utility model, and the descriptions and drawings herein are for illustrative purposes only and not for limiting this utility model. For example, if the following description of a first feature disposed on or above a second feature indicates that it includes embodiments where the first and second features are in direct contact, and also includes embodiments where additional features may be disposed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, different embodiments in this disclosure may use repeated reference numerals and / or markings. These repetitions are for simplification and clarity and are not intended to limit the relationships between the various embodiments and / or the described appearance structures. Moreover, to facilitate the description of the relationship between one component or feature and another (plural) component or feature in the drawings, spatially related terms such as "upper," "lower," "front," "rear," "top," "bottom," and similar terms may be used. In addition to the orientations shown in the accompanying drawings, spatially relevant terms are used to cover different orientations of the device in use or operation. The device may also be otherwise positioned (e.g., rotated 90 degrees or located in other orientations), and the descriptions of the spatially relevant terms used will be interpreted accordingly. Furthermore, when a component is referred to as "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Although the numerical ranges and parameters of the broad scope of this disclosure are approximate, values ​​are stated as precisely as possible in specific examples. Additionally, it is understood that while terms such as "first," "second," etc., may be used in the claims to describe different components, these components should not be limited by these terms, and the components described accordingly in the embodiments are represented by different component symbols. These terms are used to distinguish different components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the embodiments. The term "and / or" as thus used includes any or all combinations of one or more of the related listed items. Except in operational / working instances, or unless expressly stated otherwise, all numerical ranges, quantities, values, and percentages disclosed herein (e.g., angles, durations of time, temperatures, operating conditions, quantity ratios, and those percentages thereof) should be understood to be modified by the terms “approximately” or “substantially” in all embodiments. Accordingly, unless indicated to the contrary, the numerical parameters set forth in this disclosure and the appended claims are approximate values ​​that may vary as necessary. For example, each numerical parameter should be interpreted at least according to the number of significant figures stated and by applying ordinary rounding principles. Ranges may be expressed herein as from one endpoint to another or between two endpoints. All ranges disclosed herein include endpoints unless otherwise specified.

[0041] Figure 1 The schematic diagram shows a three-dimensional structure of the electrical unit locked to the chassis housing by a locking device in an embodiment of the present invention. Figure 2 The schematic diagram shows a three-dimensional structural view of the electrical unit combined with the locking device in an embodiment of the present invention. Figure 3 The diagram schematically illustrates an exploded view of the internal components of the electrical unit corresponding to the locking device in an embodiment of the present invention. Figure 4 The diagram schematically shows the front view of the locking device in an embodiment of the present invention. Figure 5 This schematically illustrates a perspective view of the locking device fixed to the electrical unit in an embodiment of the present invention. Figure 6 The schematic diagram shows a front view of the locking device fixed to the electrical unit in an embodiment of the present invention. Figure 7 This schematic diagram illustrates how the electrical unit is locked to the housing housing via a locking device in an embodiment of the present invention. Figure 8This schematic diagram illustrates how the locking device releases interference, allowing the electrical unit to move out of its corresponding housing in an embodiment of the present invention. In this embodiment, the present invention provides a locking device 2, disposed on the electrical unit 1. The electrical unit 1 includes, for example, one of a power supply unit (PSU), a battery backup unit (BBU), or a capacitor backup unit (CBU). In this embodiment, the electrical unit 1 has a first side plate 11 and a second side plate 12 facing each other, connected by a bottom plate 15 and a top plate 16. When the rear end 14 of the electrical unit 1 is aligned with any housing 90 in the chassis 9, it can be inserted into the corresponding housing 90 along a first direction (i.e., the opposite Y-axis direction). Once the front end 13 of the electrical unit 1 is against the opening of the housing 90, the electrical unit 1 is locked onto the housing 90 by the locking device 2. In this embodiment, multiple chassis housings 90 are arranged side by side along the X-axis and have the same structure. A partition 93 is provided between any two adjacent chassis housings 90. In this embodiment, the locking device 2 is disposed adjacent to the front end 13 of the electrical unit 1 and includes a movable part and a latching part 23. The movable part includes at least a fixed plate 21, an elastic plate 22, and a pressing plate 24, and is disposed adjacent to the front end 13 of the electrical unit 1. The latching part 23 is disposed on the movable part and allows it to protrude outward from the bottom plate 15 or 16 of the electrical unit 1. When the electrical unit 1 is inserted into the chassis housing 90 along the first direction (i.e., the opposite Y-axis direction), the elastic plate 22 of the movable part maintains the latching part 23 through the bottom plate 15 or top plate 16 and engaging with the latching through groove 92 on the chassis housing 90, so that the electrical unit 1 is locked onto the chassis housing 90. The fixing plate 21 extends along a second direction (i.e., the Z-axis direction) and is fixed to the second side plate 12 of the electrical unit 1 by a fastener (not shown, for example, a rivet), or extends along a third direction (i.e., the X-axis direction) and is fixed to the base plate 15 or 16 of the electrical unit 1 by a fastener (not shown, for example, a rivet), wherein the first direction, the second direction, and the third direction are perpendicular to each other. The elastic plate 22 extends along a third direction (i.e., the X-axis direction) and is disposed on the base plate 15 of the electrical unit 1, and has a first end 221 and a second end 222 that are opposite to each other. The first end 221 of the elastic plate 22 is connected to the fixing plate 21. Additionally, a snap-fit ​​portion 23 is provided at the second end 222 of the elastic plate 22, allowing it to protrude outward from the base plate 15 of the electrical unit 1 through the opening 150 of the base plate 15. When the electrical unit 1 is housed in the chassis housing 90, the elastic plate 22 can provide elastic force to maintain the buckle portion 22 penetrating the bottom plate 15 so as to engage with the buckle through groove 92 on the bottom 91 of the chassis housing 90, thereby locking the electrical unit 1 onto the chassis housing 90.The second end 222 of the pressing plate 24, which is connected to the elastic plate 22, protrudes from the front end 13 of the electrical unit 1 along the Y-axis and is exposed through the window 130. This allows the elastic plate 22 to be bent under force, causing the latching part 23 to disengage from the latching slot 92 and be stored in the base plate 15. Furthermore, when the latching part 22 of the locking device 2 disengages from the latching slot 92 of the chassis housing 90, the electrical unit 1 is allowed to disengage from the chassis housing 90 along the Y-axis.

[0042] In this embodiment, the electrical unit 1 has a rectangular parallelepiped structure. The assembly method of the first side plate 11, the second side plate 12, the bottom plate 15, and the top plate 16 is not a necessary technical feature limiting this utility model, and therefore will not be described in detail. In this embodiment, when the electrical unit 1 is locked to the chassis housing 90, the rear end 14 of the electrical unit 1 is electrically connected to the connector behind the chassis housing 90, and the front end 13 and the rear end 14 are two opposite ends in the first direction (i.e., the opposite Y-axis direction). The structure of the front end 13 and the rear end 14 of the electrical unit 1 is also not a necessary technical feature limiting this utility model and can be adjusted according to actual application requirements. For example, the front end 13 of the electrical unit 1 has a ventilation grille and a handle 18. The locking device 2 can be extended through the window 130 of the front end 13. For ease of explanation, some structures of the front end 13 can be omitted, such as... Figure 3 , Figure 5 and Figure 6 This invention is not intended to limit the scope of the present invention. Furthermore, it should be noted that the locking device 2 of the present invention is disposed adjacent to the front end 13 of the electrical unit 1, and is further configured corresponding to a vertical side plate (parallel to the Z-axis direction) and a connected transverse plate (parallel to the X-axis direction) of the electrical unit 1. In the following embodiments, although the fixing plate 21 and the elastic plate 22 of the locking device 2 are described in relation to the second side plate 12 and the bottom plate 15 of the electrical unit 1, this is not a limitation. For example, in other embodiments, the fixing plate 21 and the elastic plate 22 of the locking device 2 may simultaneously correspond to the bottom plate 15 or the top plate 16 of the electrical unit 1, or may be configured to correspond to the first side plate 11 and the top plate 16, the first side plate 11 and the bottom plate 15, or the second side plate 12 and the top plate 16 of the electrical unit 1, respectively. This will be explained in advance.

[0043] In this embodiment, the fixing plate 21 and the elastic plate 22 of the locking device 2 are integrally formed from metal sheets, for example. When the fixing plate 21 and the elastic plate 22 of the locking device 2 correspond to the second side plate 12 and the bottom plate 15 of the electrical unit 1, respectively, and the fixing plate 21 is fixed to the inner wall surface 120 of the second side plate 12 by a fastener (not shown), for example a rivet, the fixing plate 21 and the elastic plate 22 are L-shaped in the first direction (i.e., the opposite Y-axis direction). When the fixing plate 21 is fixed to the second bottom plate 15 or the top plate 16 of the electrical unit 1 along the third direction (i.e., the X-axis direction), the fixing plate 21 and the elastic plate 22 are I-shaped in the first direction (i.e., the opposite Y-axis direction) or opposite to the first direction (i.e., the Y-axis direction). At this time, the fixing plate 21 can be the fixing end 21a formed by the first end 211 of the elastic plate 22 (see Figure 10 ).

[0044] It should be noted that, in this embodiment, the elastic plate 22 of the locking device 2 also includes a bending portion 228, which is disposed adjacent to the first end 221 of the elastic plate 22. The first surface 223 is pre-bent to form a bending angle A, so that when the fixing plate 21 is fixed to the inner wall surface 120 of the second side plate 12 by means of, for example, rivets or other fasteners, the first surface 223 of the elastic plate 22 abuts against the inner wall surface of the bottom plate 15, thereby increasing the elastic force to maintain the latching portion 23 of the locking device 2 through the opening 150 of the bottom plate 15. When the electrical unit 1 is placed into one of the plurality of side-by-side chassis housing seats 90, the elastic plate 22 of the locking device 2 further maintains the latching portion 23 through the bottom plate 15, so as to interfere with the latching through groove 92 on the bottom 91 of the chassis housing seat 90. Since the locking device 2 is fixed to the first side plate 12 only by the fixing plate 21 at one end, and the elastic plate 22, the buckle part 23 and the pressing plate 24 are all set relative to the bottom plate 15, the space of the electrical unit 1 in the width direction can be saved, and multiple electrical units 1 can be installed in the chassis 9, while solving the space utilization problem of the electrical unit 1.

[0045] Furthermore, the pre-bent elastic plate 22, after installation, remains perpendicular to the fixed plate 21 and is disposed on the base plate 15 of the electrical unit 1, which can enhance the impact resistance of the locking device 2 and prevent it from shaking. In this embodiment, the electrical unit 1 also includes a limiting plate 151, which extends along a third direction (i.e., the X-axis direction) and is disposed on the base plate 15, perpendicular to the base plate 15, protruding from the outside to the inside along the Z-axis direction, and is disposed adjacent to one side of the elastic plate, so as to restrict the movement of the elastic plate 22 in the first direction (i.e., the reverse Y-axis direction), further enhancing the impact resistance of the locking device 2, and further preventing the locking device 2 from shaking when it is inserted into the housing 90 along the first direction (i.e., the reverse Y-axis direction). In addition, in this embodiment, the elastic plate 22 also includes a folded edge structure 225, which is disposed adjacent to the side plate of the elastic plate 22, so that the operator can press / lift the pressing plate 24, and the elastic plate 22 can move smoothly relative to the base plate 13 and the limiting plate 151. Of course, this utility model is not limited thereto.

[0046] In this embodiment, the elastic plate 22 has a first surface 223 and a second surface 224 that are opposite to each other, with the first surface 223 close to the base plate 15 of the electrical unit 1. To ensure that the locking device 2's elastic plate 22 maintains the latching portion 23 penetrating the base plate 15 and interfering with the latching slot 92 on the bottom 91 of the chassis housing 90, the latching portion 23 of the locking device 2 has a protrusion height D relative to the first surface 223 of the elastic plate 22, with the protrusion height D ranging from 2mm to 4mm. Of course, the type and size of the latching portion 23 can also be adjusted according to actual application requirements.

[0047] In this embodiment, the elastic plate 22 further includes a protruding rib 226 disposed on the second surface 224 of the elastic plate 22 and extending along a third direction (i.e., the X-axis direction). The protruding rib 226 further strengthens the structural strength of the elastic plate 22. Furthermore, the locking device 2 may also include a connecting protrusion 25 disposed between the fixed plate 21 and the first end 221 of the elastic plate 22, thereby maintaining the fixed plate 21 and the elastic plate 22 perpendicular to each other and strengthening the overall structural strength of the locking device 2. In other embodiments, the length range of the aforementioned folded edge structure 225 or protruding rib 226 extending along a third direction (i.e., the X-axis direction) can be adjusted according to actual application requirements, and can also be segmented, with multi-segmented folded edge structures 225 or protruding ribs 226 extending sequentially along a third direction (i.e., the X-axis direction). Figure 9 A perspective view of the locking device in another embodiment of the present invention is shown schematically. In this embodiment, the folded edge structure 225a of the elastic plate 22 is not bent in the middle section, but only at both ends, forming a segmented structure. This moderately increases the structural strength of the elastic plate 22, thereby facilitating the pressing operation of the locking device 2a. Of course, the present invention is not limited to this.

[0048] In this embodiment, the pressing plate 24 includes a pressing portion 241, which is offset from the first surface 223 of the elastic plate 22 toward the second surface 224 to form a step difference. Additionally, in this embodiment, the elastic plate 22 also includes an offset segment 227 located at the second end 222, which is offset toward the second surface 224 to form a step difference. The pressing plate 24 is connected to the first surface 223 of the offset segment 227. In this embodiment, the latching portion 23 and the pressing plate 24 can be integrally formed from a metal sheet, for example. The pressing plate 24 can be further fixed to the first surface 223 of the offset segment 227, i.e., the second end 222 of the elastic plate 22, by rivets or other fasteners (not shown). When the pressing part 241 is displaced from the first surface 223 toward the second surface 224 (i.e., the Z-axis direction) under force, it resists the elastic restoring force of the elastic plate 22 and drives the latching part 23 at the second end 222 to disengage from the latching slot 92 at the bottom 91 of the chassis housing 90. The operator can then move the electrical unit 1 out of the chassis housing 90 of the chassis 9 along the Y-axis direction using the handle 18.

[0049] As can be seen from the above embodiments, by using the locking device 2 of this utility model along the bottom plate 15 or top plate 16 of the electrical unit 1, the space in the width direction of the electrical unit 1 can be fully utilized to lock the electrical unit 1 to the chassis 9, while improving the space utilization rate of the electrical unit 1. In this embodiment, the first side plate 11 and the second side plate 12 of the electrical unit 1 are opposite to each other and have a width distance W. By controlling the length of the elastic plate 22 of the locking device 2 within the width distance W, the electrical unit 1 can be stably locked to the chassis housing 90 of the chassis 9, while improving the space utilization rate of the electrical unit 1. In this embodiment, the electrical unit 1 includes at least one fan module 17 disposed between the first side plate 11 and the second side plate 12. In this embodiment, the two sets of fan modules 17 are adjacent to the front end 13 and arranged along a third direction (i.e., the X-axis direction). In addition, in this embodiment, the locking device 2 and the fan module 17 are arranged along a first direction (i.e., the opposite Y-axis direction) without overlapping or interfering. Since the two sets of fan modules 17 and the locking device 2 do not overlap or interfere with each other in the installation direction (i.e., the opposite Y-axis direction), the locking device 2 of this invention effectively utilizes the space in both the width and length directions inside the electrical unit 1, thereby improving the overall space utilization rate of the electrical unit 1. Of course, this invention is not limited to this, and will not be elaborated further.

[0050] In summary, this utility model provides a locking device for electrical units to solve the space utilization problem of power supply units, battery backup units, or capacitor backup units. The locking device is located on the front side of the electrical unit's housing, on the bottom or top plate of the inner surface of the housing. The fixing plate and elastic plate of the locking device can be integrally formed from metal sheets, in an "L" or "I" shape, and the structure can be reinforced by connecting protrusions or ribs. By fixing the fixing plate to the housing of the electrical unit, the locking device can be positioned on the bottom or top plate of the housing. Since the locking device is fixed to the housing only at one end by the fixing plate and extends along the bottom or top plate, it saves space in the width direction of the electrical unit, which is beneficial for arranging dual fans in the width direction of the housing. It can also utilize space in the length direction of the electrical unit, improving the overall space utilization rate of the electrical unit. The end face of the fixing plate can fit against the side plate of the electrical unit's housing and be fixed with fasteners such as rivets. The bottom surface of the elastic plate is located at the front end of the electrical unit housing and fits against the bottom or top plate inside the housing. The latching part and the pressing plate can also be integrally formed from a metal sheet and then fixed perpendicularly to the elastic plate by fasteners such as rivets, and secured to an offset section away from the fixed plate. The elastic plate can be pre-bent; after the fixed plate is fixed to the side plate of the housing, the elastic plate can spring up to abut against the bottom or top plate of the housing. Furthermore, the bottom or top plate of the electrical unit housing has an opening for the latching part to extend, allowing it to further engage with the latching slot of the chassis housing, locking the electrical unit onto the chassis housing. By pressing / lifting the pressing plate, the operator moves the elastic plate and the latching part on it, releasing the interference between the latching part and the chassis housing, disengaging the latching part from the latching slot, and allowing the electrical unit to disengage from the chassis housing. The electrical unit can be fitted with a limiting plate on the bottom or top plate corresponding to the locking device, restricting the movement of the locking device in the installation direction of the electrical unit. The dual-fan module and the locking device do not overlap or interfere with each other in the installation direction. This locking device design effectively utilizes the space inside the electrical unit in both the width and length directions, improving the overall space utilization rate of the electrical unit. Furthermore, the locking device is fixed to the side panel of the housing via a fixing plate, and a pre-bent elastic plate, perpendicular to the fixing plate after installation, is positioned at the bottom / top of the power supply housing, further enhancing the locking device's impact resistance and preventing it from shaking.

[0051] This utility model may be modified in various ways by those skilled in the art, but all such modifications shall not depart from the protection sought by the appended claims.

Claims

1. A locking device disposed on an electrical unit, characterized in that, It includes a movable part and a snap-fit ​​part. The movable part is adjacent to a front end of the electrical unit, and the snap-fit ​​part is disposed on the movable part, allowing it to protrude outward from a bottom plate or a top plate of the electrical unit. When the electrical unit is inserted into a chassis housing along a first direction, the movable part maintains the snap-fit ​​part through the bottom plate or the top plate and engages with a snap-fit ​​through groove on the chassis housing, so that the electrical unit is locked onto the chassis housing.

2. The locking device of claim 1, wherein, The activities department includes: A fixing plate is fixed to one side plate of the electrical unit along a second direction, or fixed to the bottom plate or the top plate of the electrical unit along a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other; An elastic plate extends along the third direction and is disposed on the bottom plate or the top plate, and has a first end and a second end, the first end being connected to the fixed plate; A pressing plate connects the second end of the latching part and the elastic plate, protruding from the front end of the electrical unit, allowing the elastic plate to be bent under force and causing the latching part to disengage from the latching slot and be stored in the bottom plate or the top plate. When the latching part disengages from the latching slot, the electrical unit is allowed to disengage from the chassis housing.

3. The locking device of claim 1, wherein, The electrical unit includes one of a power supply unit, a battery backup unit, and a capacitor backup unit.

4. The locking device of claim 1, wherein, When the electrical unit is locked in the chassis housing, one rear end of the electrical unit is electrically connected to the chassis housing, and the front end and the rear end are two opposite ends of the first direction.

5. The locking device of claim 2, wherein, The fixing plate is fixed to the side plate, the bottom plate, or the top plate by a fastener.

6. The locking device of claim 2, wherein, The fixed plate and the elastic plate are integrally formed from a single metal sheet.

7. The locking device of claim 2, wherein, The electrical unit also includes a limiting plate that extends along the third direction and is disposed on the bottom plate or the top plate, perpendicular to the bottom plate or the top plate, protruding from the outside to the inside, and disposed adjacent to one side of the elastic plate to restrict the movement of the elastic plate in the first direction.

8. The locking device of claim 7, wherein, The elastic plate also includes a folded edge structure adjacent to the side plate of the elastic plate.

9. The locking device of claim 2, wherein, The elastic plate has a first side and a second side that are opposite to each other, the first side being close to the bottom plate or the top plate.

10. The locking device as claimed in claim 9, characterized in that, The elastic plate also includes a protruding rib disposed on the second surface of the elastic plate and extending along the third direction.

11. The locking device of claim 9, wherein, The elastic plate also includes an offset segment located at the second end, the offset segment being offset toward the second surface to form a step difference, and the pressing plate being connected to the first surface of the offset segment.

12. The locking device of claim 11, wherein, The pressing plate is fixed to the first surface of the offset segment by a fastener.

13. The locking device of claim 9, wherein, The latching part has a protruding height relative to the first surface of the elastic plate, and the protruding height ranges from 2mm to 4mm.

14. The locking device of claim 9, wherein, The pressing plate also includes a pressing part that is offset from the first surface toward the second surface to form a step.

15. The locking device of claim 14, wherein, The pressing part is displaced from the first surface toward the second surface under force, resisting the elastic restoring force of the elastic plate and causing the latching part at the second end to disengage from the latching groove.

16. The locking device of claim 9, wherein, The elastic plate also includes a bending portion disposed near the first end, wherein the first surface is pre-bent so that when the fixing plate is fixed to the side plate, the first surface of the elastic plate abuts against the bottom plate or the top plate, and provides elastic force to maintain the buckle portion through the bottom plate.

17. The locking device of claim 2, wherein It also includes a connecting protrusion disposed between the first end of the fixed plate and the elastic plate.

18. The locking device of claim 1, wherein, The electrical unit includes at least one fan module disposed between the side panel and the opposite side panel, adjacent to the front end and arranged in a third direction.

19. The locking device as claimed in claim 18, characterized in that, The locking device and the fan module are arranged along the first direction.

20. The locking device of claim 2, wherein, The buckle and the pressing plate are integrally formed from a single metal sheet.

21. The locking device of claim 2, wherein, The pressing plate is fixed to the second end of the elastic plate by a fastener.

Images