Locking device

Abstract

The invention 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] The present invention relates to the technical field of a locking device. Specifically, it particularly relates to a locking device applied to a power supply to solve the problem of space utilization of electrical units. Background Art

[0002] In today's daily life, the application of many electronic devices requires a power transfer module to provide the required power. Taking the power supply unit of a server as an example, the power supply unit is usually fixed in a cabinet accommodation seat through a locking device. Since the locking device is mostly installed inside the housing of the power supply unit, it will occupy the internal space of the housing.

[0003] In the prior art, the locking device mainly includes an elastic plate and a buckle. The elastic plate is installed on the side plate of the housing, and the buckle is arranged perpendicular to the elastic plate, so that the pressing direction is perpendicular to the length direction of the elastic plate. Through pressing action, the elastic plate is bent and deformed, and the buckle is driven to move, so as to insert or remove the power supply unit into or out of the cabinet accommodation seat. Since the buckle needs to be pressed during the insertion and removal of the power supply unit, a certain movement space needs to be reserved in the width direction inside the housing of the power supply unit for the locking device to prevent interference between the locking device and other parts inside the housing of the power supply unit. In addition, since the locking between the power supply unit and the cabinet accommodation seat is realized through the locking device, the setting of the locking device will also occupy the space of the cabinet accommodation seat and limit the width dimension of the power supply unit. For multiple cabinet accommodation seats, adjacent power supply units are separated by a vertical partition. However, since adjacent power supply units cannot interfere with each other, the thickness of the partition also occupies a certain width space, thus affecting the overall space utilization.

[0004] On the other hand, the power supply units applied in servers are increasingly developing towards small size and high power. Using a single fan for some power supply units can no longer meet the heat dissipation requirements. Therefore, it is necessary to increase the use of two fans, but arranging the two fans side by side horizontally will encroach on the movement space of the locking device.

[0005] Therefore, how to develop a locking device applied to electrical units to solve the problem of space utilization of electrical units is indeed a subject that the field urgently needs to face. Summary of the Invention

[0006] The object of the present invention is to provide a locking device applied to an electrical unit. The locking device is arranged on the front side of the casing of the electrical unit and is located on the bottom plate or the top plate of the inner surface of the casing. The fixing plate and the elastic plate of the locking device can be integrally formed by a metal sheet, and the structure can be strengthened by connecting bumps or ribs. The locking device can be fixed to the side plate, the bottom plate or the top plate of the casing of the electrical unit through the fixing plate. Since the locking device is fixed to the casing of the electrical unit only through the fixing plate at one end, and the elastic plate extends along the bottom plate or the top plate of the casing, the space used in the width direction of the electrical unit can be saved, which is beneficial to arranging two fans in the width direction of the casing of the electrical unit. Of course, the space in the length direction of the electrical unit can also be utilized to improve the overall space utilization rate of the electrical unit. The end face of the fixing plate can be attached to the side plate, the top plate or the top plate of the casing of the electrical unit and fixed with fixing parts such as rivets. One end of the elastic plate is connected to the fixing plate, and the bottom surface is located at the front end of the casing of the electrical unit and is attached to the bottom plate or the top plate inside the casing. The buckle part and the pressing plate can also be integrally formed by a metal sheet and then vertically arranged with the elastic plate through a fixing part such as a rivet and fixed to the offset section far from the fixing plate. The elastic plate can be pre-bent. After the fixing plate is fixed to the side plate, the bottom plate or the top plate of the casing, the elastic plate can increase the elastic force to abut against the bottom plate or the top plate of the casing. In addition, an opening for the buckle part to protrude is provided on the bottom plate or the top plate of the casing of the electrical unit, allowing the buckle part to further engage with the buckle through groove of the chassis accommodating seat, so that the electrical unit is locked to the chassis accommodating seat. The operator presses / lifts the pressing plate to drive the elastic plate and the buckle part on the elastic plate to move, which can release the interference between the buckle part and the chassis accommodating seat, make the buckle part disengage from the buckle through groove, and allow the electrical unit to disengage from the chassis accommodating seat. The electrical unit can be provided with a limiting plate on the bottom plate or the top plate corresponding to the locking device to limit the movement of the locking device in the installation direction of the electrical unit, and the two-fan module does not overlap or interfere with the locking device in the installation direction. In this way, the setting of the locking device of the present invention effectively utilizes the space in the width direction and the length direction inside the electrical unit to improve the overall space utilization rate of the electrical unit. On the other hand, when the locking device is fixed to the side plate of the casing through the fixing plate, the pre-bent elastic plate is perpendicular to the fixing plate after installation and is arranged at the bottom / top of the power supply casing, which further strengthens the impact resistance of the locking device and is not easy to shake.

[0007] To achieve the foregoing object, the present invention provides a locking device arranged on an electrical unit. The locking device includes a movable part and a buckle part. The movable part is adjacent to the front end of the electrical unit, and the buckle part is arranged on the movable part and is allowed to protrude outward from the bottom plate or the top plate of the electrical unit. When the electrical unit is placed into a chassis accommodating seat along a first direction, the movable part maintains the buckle part passing through the bottom plate or the top plate and engaging with the buckle through groove on the chassis accommodating seat, so that the electrical unit is locked to the chassis accommodating seat.

[0008] In one embodiment, the movable part includes a fixing plate, an elastic plate, and a pressing plate. The fixing plate is fixed to the side plate of the electrical unit along the second direction, or fixed to the bottom plate or the top plate of the electrical unit along the third direction, where the first direction, the second direction, and the third direction are perpendicular to each other; the elastic plate extends along the third direction on the bottom plate or the top plate, and has a first end and a second end, with the first end connected to the fixing plate; the pressing plate connects the buckle part and the second end of the elastic plate, protrudes from the front end of the electrical unit, allows the elastic plate to be bent by force and drives the buckle part to disengage from the buckle through groove and be received into the bottom plate or the top plate, wherein when the buckle part disengages from the buckle through groove, the electrical unit is allowed to disengage from the chassis accommodation seat.

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

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

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

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

[0013] In one embodiment, the electrical unit further includes a limiting plate, which extends along the third direction on the bottom plate or the top plate, is perpendicular to the bottom plate or the top plate, protrudes from the outside to the inside, and is disposed adjacent to one side of the elastic plate to limit 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 the side plate of the elastic plate.

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

[0016] In one embodiment, the elastic plate further includes convex ribs disposed on the second surface of the elastic plate and extending along the third direction.

[0017] In one embodiment, the elastic plate further includes an offset section located at the second end. The offset section offsets towards the second surface to form a step difference, and the pressing plate is connected to the first surface of the offset section.

[0018] In one embodiment, the pressing plate is fixed to the first surface of the offset section through a fixing member.

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

[0020] In one embodiment, the pressing plate further includes a pressing portion, and a step difference is formed by offsetting in the direction from the first surface towards the second surface.

[0021] In one embodiment, when the pressing portion is stressed, it is displaced in the direction from the first surface towards the second surface, resists the elastic restoring force of the elastic plate, and drives the buckle portion at the second end to disengage from the buckle through groove.

[0022] In one embodiment, the elastic plate further includes a bending portion, which is disposed adjacent to the first end and pre-bends the first surface 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 an elastic force to maintain the buckle portion penetrating through the bottom plate.

[0023] In one embodiment, the locking device further includes a connecting lug, which is disposed between the first ends of the fixing plate and the elastic plate.

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

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

[0026] In one embodiment, the buckle portion and the pressing plate are integrally formed by a metal sheet.

[0027] In one embodiment, the pressing plate is fixed to the second end of the elastic plate through a fixing member.

[0028] The beneficial effect of the present invention is that the embodiments of the present invention provide a locking device applied to an electrical unit to solve the problem of space utilization of a power supply unit, a battery backup unit or a capacitor backup unit. Through the setting of the locking device of the present invention, the space in the width direction of the electrical unit can be fully utilized, the locking of the electrical unit in the chassis can be realized, and at the same time, the space utilization rate of the electrical unit is improved. Furthermore, the pre-bent elastic plate remains perpendicular to the fixing plate after installation, and is disposed at the bottom / top of the power supply housing, which further strengthens the impact resistance of the locking device and is not easy to shake. Description of the Drawings

[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 more fully understand the above content and are not intended to limit the present invention.

[0030] Figure 1 Schematically showing a three-dimensional structure diagram of an electrical unit locked to a chassis accommodation seat through a locking device in an embodiment of the present invention.

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

[0032] Figure 3 Schematically shows an exploded view of the structure of the locking device corresponding to the internal components of the electrical unit in an embodiment of the present invention.

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

[0034] Figure 5 Schematically shows a three-dimensional structure diagram of the locking device fixed to the electrical unit in an embodiment of the present invention.

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

[0036] Figure 7 Schematically shows a schematic diagram of the electrical unit locked to the housing accommodation seat through the locking device in an embodiment of the present invention.

[0037] Figure 8 Schematically shows a schematic diagram of the locking device releasing interference and allowing the electrical unit to be removed from the corresponding housing accommodation seat in an embodiment of the present invention.

[0038] Figure 9 Schematically shows a three-dimensional structure diagram of the locking device in another embodiment of the present invention.

[0039] Figure 10 Schematically shows a three-dimensional structure diagram of the locking device in still another embodiment of the present invention. Detailed implementation manners

[0040] Some exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different ways, all of which do not depart from the scope of the present invention, and the descriptions and drawings therein are essentially for illustrative purposes and not for limiting the present invention. For example, if the following content of the present disclosure describes a first feature being disposed on or above a second feature, it means that it includes embodiments in which the above-mentioned first feature and the above-mentioned second feature are in direct contact, and also includes embodiments in which additional features can be disposed between the above-mentioned first feature and the above-mentioned second feature, so that the above-mentioned first feature and the above-mentioned second feature may not be in direct contact. Additionally, the same reference signs and / or labels may be used in different embodiments of the present disclosure. These repetitions are for the purpose of simplicity and clarity and are not used to limit the relationship between each embodiment and / or the described appearance structure. Furthermore, for the convenience of describing the relationship between a component or feature part in the drawings and another (plural) component or (plural) feature part, spatial relative terms such as "above", "below", "front", "rear", "top", "bottom" and similar terms may be used. Except for the orientations shown in the drawings, the spatial relative terms are used to cover different orientations of the device during use or operation. The device can also be positioned otherwise (e.g., rotated 90 degrees or in other orientations), and the descriptions of the spatial relative terms used can be interpreted accordingly. In addition, when a component is referred to as being "connected to" or "coupled to" another component, it can 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 the present disclosure are approximate values, the values are stated as precisely as possible in the specific examples. Additionally, it can be understood that although 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 in the embodiments, these components described correspondingly are represented by different component symbols. These terms are used to distinguish different components. For example: The first component can be referred to as the second component, and similarly, the second component can also be referred to as the first component without departing from the scope of the embodiments. The term "and / or" used in this way includes any or all combinations of one or more of the related listed items. Except in the operating / work examples, or unless explicitly specified, all numerical ranges, amounts, values, and percentages (such as those percentages of angles, time durations, temperatures, operating conditions, quantity ratios, and the like) disclosed herein should be understood to be modified by the term "about" or "substantially" in all embodiments. Accordingly, unless otherwise indicated, the numerical parameters stated in the present disclosure and the appended claims are approximate values that can vary as needed. For example, each numerical parameter should be interpreted at least in accordance with the digits of the significant figures and by applying ordinary rounding principles. Ranges can be expressed in this document as from one endpoint to the other endpoint or between two endpoints. All ranges disclosed herein include the endpoints unless otherwise specified.

[0041] Figure 1 Schematic three-dimensional structure diagram showing the electrical unit locked to the chassis accommodation seat by the locking device in the embodiment of the present invention. Figure 2 Schematic three-dimensional structure diagram showing the electrical unit combined with the locking device in the embodiment of the present invention. Figure 3 Schematic exploded view of the structure of the locking device corresponding to the internal components of the electrical unit in the embodiment of the present invention. Figure 4 Schematic front view of the locking device in the embodiment of the present invention. Figure 5 Schematic three-dimensional structure diagram showing the locking device fixed to the electrical unit in the embodiment of the present invention. Figure 6 Schematic front view of the locking device fixed to the electrical unit in the embodiment of the present invention. Figure 7 Schematic diagram showing the electrical unit locked to the housing accommodation seat by the locking device in the embodiment of the present invention. Figure 8Schematic diagram showing the unlocking of interference of the locking device in an embodiment of the present invention to allow the electrical unit to be removed from the corresponding chassis accommodation seat. 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), and a capacitance backup unit (CBU). In this embodiment, the electrical unit 1 has a first side plate 11 and a second side plate 12 opposite to each other, and the first side plate 11 and the second side plate 12 are connected by a bottom plate 15 and a top plate 16. When the electrical unit 1 aligns its rear end 14 with any one of the chassis accommodation seats 90 in the chassis 9, it can be inserted into the corresponding chassis accommodation seat 90 along the first direction (i.e., the reverse Y-axis direction). When the front end 13 of the electrical unit 1 fits against the opening of the chassis accommodation seat 90, the electrical unit 1 can be locked to the chassis accommodation seat 90 through the locking device 2. In this embodiment, a plurality of chassis accommodation seats 90 are arranged side by side along the X-axis direction and have the same structure, and there is a partition 93 between any two adjacent chassis accommodation seats 90. In this embodiment, the locking device 2 is adjacent to the front end 13 of the electrical unit 1 and includes a movable part and a buckle part 23. The movable part at least includes a fixing plate 21, an elastic plate 22, and a pressing plate 24, which are adjacent to the front end 13 of the electrical unit 1. The buckle part 23 is disposed on the movable part and is allowed 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 accommodation seat 90 along the first direction (i.e., the reverse Y-axis direction), the elastic plate 22 of the movable part maintains the buckle part 23 passing through the bottom plate 15 or the top plate 16 and engaging with the buckle through slot 92 on the chassis accommodation seat 90, so that the electrical unit 1 is locked to the chassis accommodation seat 90. The fixing plate 21 extends along the second direction (i.e., the Z-axis direction) and is fixed to the second side plate 12 of the electrical unit 1 by a fixing member (not shown) such as a rivet, or extends along the third direction (i.e., the X-direction) and is fixed to the bottom plate 15 or 16 of the electrical unit 1 by a fixing member (not shown) such as a rivet. The first direction, the second direction, and the third direction are perpendicular to each other. The elastic plate 22 extends along the third direction (i.e., the X-axis direction) and is disposed on the bottom plate 15 of the electrical unit 1, and has a first end 221 and a second end 222 opposite to each other. The first end 221 of the elastic plate 22 is connected to the fixing plate 21. In addition, the buckle part 23 is disposed at the second end 222 of the elastic plate 22 and is allowed to protrude outward from the bottom plate 15 of the electrical unit 1 through the opening 150 of the bottom plate 15. When the electrical unit 1 is accommodated in the chassis accommodation seat 90, the elastic plate 22 can provide an elastic force to maintain the buckle part 22 passing through the bottom plate 15 to engage with the buckle through slot 92 on the bottom 91 of the chassis accommodation seat 90, so that the electrical unit 1 is locked to the chassis accommodation seat 90.The pressing plate 24 is connected to the second end 222 of the elastic plate 22, protrudes from the front end 13 of the electrical unit 1 in the Y-axis direction, and is exposed through the window 130, allowing the elastic plate 22 to be bent under force and driving the buckle portion 23 to disengage from the buckle through groove 92 and be received into the bottom plate 15. In addition, when the buckle portion 22 of the locking device 2 disengages from the buckle through groove 92 of the chassis accommodating seat 90, the electrical unit 1 is allowed to disengage from the chassis accommodating seat 90 along the Y-axis.

[0042] In this embodiment, the outer shape of the electrical unit 1 is a cuboid structure. The assembly manner of the first side plate 11, the second side plate 12, the bottom plate 15, and the top plate 16 is not an essential technical feature limiting the present invention, so it will not be elaborated here. In this embodiment, when the electrical unit 1 is locked to the chassis accommodating seat 90, the rear end 14 of the electrical unit 1 is further electrically connected to the connector behind the chassis accommodating seat 90, and the front end 13 and the rear end 14 are two opposite ends in the first direction (i.e., the reverse Y-axis direction). The structures of the front end 13 and the rear end 14 of the electrical unit 1 are also not essential technical features limiting the present invention 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 is provided with a handle 18. The locking device 2 can be extended through the window 130 at the front end 13. For the convenience of description, some structures at the front end 13 can be omitted, such as Figure 3 , Figure 5 and Figure 6 , which do not limit the present invention. In addition, it should be noted that the locking device 2 of the present invention is adjacent to the front end 13 of the electrical unit 1 and is further provided corresponding to a vertical side plate (parallel to the Z-axis direction) and an adjacent 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 corresponding to the second side plate 12 and the bottom plate 15 of the electrical unit 1, it is not limited thereto. For example, in other embodiments, the fixing plate 21 and the elastic plate 22 of the locking device 2 can simultaneously correspond to the bottom plate 15 or the top plate 16 of the electrical unit 1, or can respectively correspond to the first side plate 11 and the top plate 16 of the electrical unit 1, correspond to the first side plate 11 and the bottom plate 15 of the electrical unit 1, or correspond to the second side plate 12 and the top plate 16 of the electrical unit 1, which is hereby explained first.

[0043] In this embodiment, the fixing plate 21 and the elastic plate 22 of the locking device 2 are integrally formed of a metal sheet, for example. When the fixing plate 21 and the elastic plate 22 of the locking device 2 respectively correspond to the second side plate 12 and the bottom plate 15 of the electrical unit 1, and the fixing plate 21 is fixed to the inner wall surface 120 of the second side plate 12 by a fixing member (not shown) such as a rivet, the fixing plate 21 and the elastic plate 22 are in an "L" shape in the view in the first direction (i.e., the reverse 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 in the third direction (i.e., the X-axis direction), the fixing plate 21 and the elastic plate 22 are in a "one" shape in the view in the first direction (i.e., the reverse Y-axis direction) or the direction opposite to the first direction (i.e., the Y-axis direction). At this time, the fixing plate 21 can be the fixed 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 further 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 a rivet or other fixing member, 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 engaging portion 23 of the locking device 2 to penetrate the opening 150 of the bottom plate 15. When the electrical unit 1 is placed in one of a plurality of chassis accommodation seats 90 arranged side by side, the elastic plate 22 of the locking device 2 further maintains the engaging portion 23 to penetrate the bottom plate 15 to interfere with the engaging through groove 92 on the bottom 91 of the chassis accommodation seat 90. Since the locking device 2 is only fixed to the first side plate 12 by the fixing plate 21 at one end, and the elastic plate 22, the engaging portion 23 and the pressing plate 24 are all disposed relative to the bottom plate 15, the space utilization in the width direction of the electrical unit 1 can be saved, the installation of a plurality of electrical units 1 in the chassis 9 can be realized, and the space utilization problem of the electrical unit 1 can be solved at the same time.

[0045] Furthermore, the pre-bent elastic plate 22 remains perpendicular to the fixed plate 21 after installation and is disposed on the bottom plate 15 of the electrical unit 1, which can strengthen the impact resistance of the locking device 2 and is not prone to shaking. In this embodiment, the electrical unit 1 further includes a limiting plate 151, which extends along the third direction (i.e., the X-axis direction) on the bottom plate 15, is perpendicular to the bottom plate 15, protrudes inward along the Z-axis direction from the outside, and is disposed adjacent to one side of the elastic plate to limit the movement of the elastic plate 22 in the first direction (i.e., the reverse Y-axis direction), further strengthening the impact resistance of the locking device 2 and further preventing the locking device 2 from shaking when being inserted into the chassis accommodation seat 90 in the first direction (i.e., the reverse Y-axis direction). Additionally, in this embodiment, the elastic plate 22 further includes a hem structure 225, which is adjacent to the side plate of the elastic plate 22, so that when an operator presses / lifts the pressing plate 24, the elastic plate 22 can smoothly move relative to the bottom plate 13 and the limiting plate 151. Of course, the present invention 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, and the first surface 223 is close to the bottom plate 15 of the electrical unit 1. To enable the elastic plate 22 of the locking device 2 to maintain the snap portion 23 passing through the bottom plate 15 and engaging with the snap through slot 92 on the bottom 91 of the chassis accommodation seat 90 to generate interference, the snap portion 23 of the locking device 2 has a protruding height D relative to the first surface 223 of the elastic plate 22, and the range of the protruding height D is between 2 mm and 4 mm. Of course, the type and size of the snap portion 23 can also be adjusted according to actual application requirements.

[0047] In this embodiment, the elastic plate 22 further includes a rib 226, which is disposed on the second surface 224 of the elastic plate 22 and extends along the third direction (i.e., the X-axis direction). Through the setting of the rib 226, the structural strength of the elastic plate 22 can be further strengthened. Furthermore, the locking device 2 may also include a connecting bump 25, which is disposed between the fixed plate 21 and the first end 221 of the elastic plate 22 to maintain the perpendicularity between the fixed plate 21 and the elastic plate 22 and strengthen the overall structural strength of the locking device 2. In other embodiments, the length range of the aforementioned hem structure 225 or rib 226 extending along the third direction (i.e., the X-axis direction) can be adjusted according to actual application requirements, and can also be segmented. The multi-segment hem structure 225 or rib 226 extends sequentially along the third direction (i.e., the X-axis direction). Figure 9 Schematically shows a three-dimensional structural diagram of the locking device in another embodiment of the present invention. In this embodiment, the hem structure 225a of the elastic plate 22 is not bent in the middle section but only bent at both ends, forming a segmented structure. In this way, the structural strength of the elastic plate 22 can be moderately increased, which is beneficial to the pressing operation of the locking device 2a. Of course, the present invention is not limited thereto.

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

[0049] As can be seen from the above embodiments, by means of the locking device 2 of the present invention along the bottom plate 15 or the top plate 16 of the electrical unit 1, the space in the width direction of the electrical unit 1 can be fully utilized to achieve the locking of the electrical unit 1 in 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 face 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 firm locking of the electrical unit 1 in the chassis receiving seat 90 of the chassis 9 can be achieved, 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, two groups of fan modules 17 are adjacent to the front end 13 and are arranged along the third direction (i.e., the X-axis direction). Additionally, in this embodiment, the locking device 2 and the fan module 17 are arranged along the first direction (i.e., the reverse Y-axis direction) without overlapping or interfering. Since the two groups of fan modules 17 and the locking device 2 do not overlap or interfere in the installation direction (i.e., the reverse Y-axis direction). In this way, the setting of the locking device 2 of the present invention effectively utilizes the space in the width direction and the length direction inside the electrical unit 1 to improve the overall space utilization rate of the electrical unit 1. Of course, the present invention is not limited thereto and will not be elaborated further.

[0050] In summary, the present invention provides a locking device applied to an electrical unit to solve the problem of space utilization of a power supply unit, a battery backup unit, or a capacitor backup unit. The locking device is disposed on the front side of the casing of the electrical unit, on the bottom plate or the top plate of the inner surface of the casing. The fixing plate and the elastic plate of the locking device can be integrally formed by a metal sheet, in an "L" shape or a "-" shape, and the structure can be strengthened by connecting bumps or ribs. By fixing the fixing plate to the casing of the electrical unit, the locking device can be disposed on the bottom plate or the top plate of the casing. Since the locking device is fixed to the casing only by the fixing plate at one end and extends along the bottom plate or the top plate of the casing, the space used in the width direction of the electrical unit can be saved, which is beneficial to arranging two fans in the width direction of the casing of the electrical unit. Of course, the space in the length direction of the electrical unit can also be utilized to improve the overall space utilization rate of the electrical unit. The end face of the fixing plate can be attached to the side plate of the casing of the electrical unit and fixed with a fixing member such as a rivet. The bottom surface of the elastic plate is located at the front end of the casing of the electrical unit and is attached to the bottom plate or the top plate inside the casing. The buckle portion and the pressing plate can also be integrally formed by a metal sheet and then vertically arranged with the elastic plate through a fixing member such as a rivet and fixed to the offset section away from the fixing plate. The elastic plate can be pre-bent. After the fixing plate is fixed to the side plate of the casing, the elastic plate can lift the elastic force to abut against the bottom plate or the top plate of the casing. In addition, an opening for the buckle portion to protrude is provided on the bottom plate or the top plate of the casing of the electrical unit, allowing the buckle portion to further engage with the buckle through groove of the chassis accommodation seat, so that the electrical unit is locked to the chassis accommodation seat. The operator can press / lift the pressing plate to drive the elastic plate and the buckle portion on the elastic plate to move, so as to release the interference between the buckle portion and the chassis accommodation seat, disengage the buckle portion from the buckle through groove, and allow the electrical unit to disengage from the chassis accommodation seat. The electrical unit can be provided with a limiting plate on the bottom plate or the top plate corresponding to the locking device to limit the movement of the locking device in the installation direction of the electrical unit, and the two-fan module and the locking device do not overlap or interfere in the installation direction. In this way, the setting of the locking device of the present invention effectively utilizes the space in the width direction and the length direction inside the electrical unit to improve the overall space utilization rate of the electrical unit. On the other hand, the locking device is fixed to the side plate of the casing through the fixing plate, and the pre-bent elastic plate is perpendicular to the fixing plate after installation and is disposed at the bottom / top of the power supply casing, which further strengthens the impact resistance of the locking device and is not easy to shake.

[0051] The present invention may be variously modified by those skilled in the art, but all such modifications fall within the scope of the appended claims.

Claims

1. A locking device is provided on an electrical unit, characterized in that, It includes a movable part and a buckle part. The movable part is adjacent to a front end of the electrical unit, and the buckle part is arranged on the movable part and is allowed to protrude outward from a bottom plate or a top plate of the electrical unit. When the electrical unit is inserted into a chassis accommodating seat in a first direction, the movable part maintains the buckle part passing through the bottom plate or the top plate and engaging with a buckle through groove on the chassis accommodating seat, so that the electrical unit is locked to the chassis accommodating seat.

2. The locking device according to claim 1, wherein the movable part includes: A fixing plate fixed to a side plate of the electrical unit in a second direction, or fixed to the bottom plate or the top plate of the electrical unit in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; An elastic plate extending in the third direction on the bottom plate or the top plate and having a first end and a second end, and the first end is connected to the fixing plate; A pressing plate connecting the buckle part and the second end of the elastic plate, protruding from the front end of the electrical unit, and being allowed to bend the elastic plate under force and drive the buckle part to disengage from the buckle through groove and be received into the bottom plate or the top plate. When the buckle part disengages from the buckle through groove, the electrical unit is allowed to disengage from the chassis accommodating seat.

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

4. The locking device according to claim 1, wherein when the electrical unit is locked to the chassis accommodating seat, a rear end of the electrical unit is electrically connected to the chassis accommodating seat, and the front end and the rear end are two opposite ends in the first direction.

5. The locking device according to claim 2, wherein the fixing plate is fixed to the side plate, the bottom plate or the top plate through a fixing member.

6. The locking device according to claim 2, wherein the fixing plate and the elastic plate are integrally formed by a metal sheet.

7. The locking device according to claim 2, wherein the electrical unit further includes a limiting plate extending in the 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 arranged adjacent to a side edge of the elastic plate to limit the movement of the elastic plate in the first direction.

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

9. The locking device according to claim 2, wherein the elastic plate has a first surface and a second surface opposite to each other, and the first surface is close to the bottom plate or the top plate.

10. The locking device according to claim 9, wherein the elastic plate further includes a rib provided on the second surface of the elastic plate and extending in the third direction.

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

12. The locking device according to claim 11, wherein the pressing plate is fixed to the first surface of the offset section through a fixing member.

13. The locking device according to claim 9, wherein the buckle portion has a protruding height relative to the first surface of the elastic plate, and the range of the protruding height is between 2 mm and 4 mm.

14. The locking device according to claim 9, wherein the pressing plate further includes a pressing portion, and a step is formed by offsetting in the direction from the first surface to the second surface.

15. The locking device according to claim 14, wherein the pressing portion is displaced in the direction from the first surface to the second surface under force, resists the elastic restoring force of the elastic plate and drives the buckle portion at the second end to disengage from the buckle through groove.

16. The locking device according to claim 9, wherein the elastic plate further includes a bending portion, which is disposed adjacent to the first end and pre-bends the first surface 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 an elastic force to maintain the buckle portion penetrating through the bottom plate.

17. The locking device according to claim 2, further comprising a connecting lug, which is disposed between the fixing plate and the first end of the elastic plate.

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

19. The locking device according to claim 18, wherein the locking device and the fan module are arranged along the first direction.

20. The locking device according to claim 2, wherein the buckle portion and the pressing plate are integrally formed by a metal sheet.

21. The locking device according to claim 2, wherein the pressing plate is fixed to the second end of the elastic plate through a fixing member.

Images