Abstract: A hanging storage enclosure includes a main frame, a hanging mechanism, a top slide and a bottom slide. The main frame has a hollow interior having a top side, a bottom side, and an open front end. The hanging mechanism is on the top side. The hanging mechanism is configured to hang the main frame from an object. The top slide is positioned on the top side and the bottom slide is positioned on the bottom side. The top slide is configured to slide in and out of the top side of the main frame for positioning the top side. The bottom slide is configured to slide in and out of the bottom side for positioning the bottom side.

Abstract: A Z-bracket is adapted for mounting an electrical box to the open face of a metal stud. The invention has two mounting platforms with self-tapping screw holes. The flat brackets of an electrical box are secured to these mounting platforms. The invention has a retaining tab with at least one retaining indentation for screwing the retaining tab to the open face of a metal stud. A connector connects the retaining tab to the mounting platforms. The front edge of each mounting platform has a groove, which accommodates the tongue on a tab of the metal stud. Multiple triangular braces connect the mounting platforms to the connector for structural support. The invention is sized to fit a standard metal stud, providing an improved method for attaching electrical boxes to the open face of a metal stud.

Abstract: A bracket system for mounting an electrical box and other components to a ceiling structure can include a support bar and a mounting bracket. The mounting bracket can be configured to receive an end of the support bar and selectively secure the support bar at any of a plurality of positions relative to the mounting bracket.

Abstract: The present disclosure relates to electrical box assemblies and universal stabilizing brackets that can be used to stabilize electrical boxes attached to different size wall studs. The electrical box assemblies include an electrical box and a stabilizing bracket. Each stabilizing brackets includes a base, a front stop, a rear stop and one or more rear stop segments. The front and rear stops and the rear stop segments include a face member that extends substantially perpendicularly relative to the base. One or more notches are positioned at a junction between each rear stop to facilitate the breaking away of rear stop segments to modify the length of the stabilizing bracket.

Abstract: An electrical box which utilizes fastening devices to provide improved box fastening to wall assembly materials with common fasteners. The electrical box possesses one or a plurality of externally situated fastener housings each with characteristics that support fastener placement, guide fastener insertion, limit fastener travel and house the fastener, once fully driven, outside of the box body interior. The externally situated fastener housing's placement outside of the box body allows for fastener insertion from the box body interior while not diminishing volumetric capacity of the box body. Alternative embodiments include round enclosure and bottom mount versions.

Abstract: (1) Clips for installation of electrical boxes into a finished framed wall. Plus the box clips can be used on various types of handy boxes for installation on existing walls, the old work box clips fasten the electrical box into a rectangular cutout in drywall. (2) The box clips are made from a 7 and ¾ inch by 2.5 mm or about 3/32's of an inch of cylindrical metal formed in a manner to support a plastic or metal electrical box in drywall. (3) To be used for adding electrical devices or circuits in offices or homes.

Abstract: There is provided a utility junction box including a first housing portion with three sidewalls, a top sidewall, a rear access opening with a removable access cover, and an open bottom opening into an interior volume for receiving at least one line from a first location, and a second housing portion forming a weather guard extending cantilever style from the top sidewall and the three sidewalls including a sloping front face, a front wall, and a lower sidewall formed with a plurality of openings facing downwards, wherein each opening formed in the lower sidewall of the weather guard is configured to allow at least one utility line to pass from within the interior volume of the housing through the opening and direct the utility line through the opening formed in the lower sidewall of the weather guard to a second location exterior to the utility junction box.

Abstract: A mounting bracket for electrical boxes that can include a mounting body with a plurality of mounting features. The plurality of mounting features can include a first set of mounting openings that can have respective elongate directions extending in parallel. The mounting body can have a mounting body axis extending across a shortest between opposing first and second sides of the mounting body. The elongate directions of the first set of mounting openings can be disposed at an acute angle relative to the mounting body axis. The first set of mounting openings can be configured to receive a plurality of fasteners to attach the mounting bracket to a first electrical box.

Abstract: A device for sensing infrared radiation is provided. The device for sensing infrared radiation includes a shell, a bottom cover, a Fresnel lens, an upper wire outlet hole, a lower wire outlet hole, a side wire outlet hole and an infrared probe. The infrared probe is arranged inside the shell, the shell is provided with an arc-shaped notch configured for arranging the Fresnel lens. The upper wire outlet hole is arranged on the shell and configured for leading wires, the lower wire outlet hole is provided on the bottom cover of the shell and configured for leading wires, and the side wire outlet hole is provided on the shell and configured for leading wires.

Abstract: Electrical box assemblies are provided that have a support that is adjustable to different sizes. The electrical box assemblies provided also include a cable support that moves from a shipping position to an installed position.

Abstract: A lighting junction box assembly includes a lighting junction box housing having a body with a partially cylindrical sidewall, a closed end, and a circular opening opposite the closed end, and flat inset facets with knock-out holes formed on the sidewall. A pair of bracket assemblies attaches the lighting junction box housing in a vertically adjustable position onto hanger bars fixed between ceiling joists. The adjustable vertical position provides for use and mounting in ceilings of various thicknesses. The bracket assemblies provide the ability to adjust the vertical position of the lighting junction box housing during installation by a simple fastener inside the junction box which may be tightened without the use of tools. This capability is accomplished by the use of a carriage bolt which may be vertically positioned in a slot in the bracket.

Abstract: A conduit pull body with an elongated generally square cross-section cavity defined by two generally square ends and four generally rectangular lateral panels (front, back and two sides) in which the back and at least one of the front and two side panels are selectively removable to increase access to the cavity for pulling cabling therethrough. Where at least two of the removeable panels are adjacent, lateral access to the cavity (as represented by the longitudinal centerline) is not less than about 180 degrees, about 270 degrees where three removeable panels are adjacent. Where at least one of the front and two sides is apertured and interchangeable with a second one of the front and two sides, the pull body is convertible between Type LB, Type LL and Type LR pull bodies. On-the-job-site construction of different types of pull bodies is possible from a selection of component parts. Methods of improving cavity access and creating different pull body types are disclosed.

Abstract: A mounting bracket (20) for a luminaire fixture frame (12) having one or more tabs (30) to engage a hat channel or the like. The one or more tabs (30) are positionable between an un-deployed position and a deployed position to operably engage the hat channel.

Abstract: A system for adjusting a junction box, to be recessed with respect to a ceiling, between a minimum ceiling thickness and a maximum ceiling thickness, utilizes a pair of hanger-bar-to-box-attachment-devices that are attached to both the junction box and to a pair of hanger-bars. The pair of hanger-bar-to-box-attachment-devices are attached to the junction box in an adjustable manner that is vertically slidable and lockable along a finite vertical path. And the pair of hanger-bar-to-box-attachment-devices that are also attached to the pair of hanger-bars, are adjustable in a horizontally slidable and lockable manner along a finite horizontal path, defined by a length of the pair of hanger-bars. The junction box may also have a set of height-markings on its exterior to facilitate adjusting the junction box to a desired height with respect to a given ceiling.

Abstract: A ventilating system including a housing, a ventilating assembly and a mounting assembly coupled to the housing. The mounting assembly can include two support members, two first mounting brackets, two second mounting brackets, and two third mounting brackets. The third mounting brackets include a first and second flange, and the second mounting brackets include bendable tabs to secure the mounting assembly to a structure. The first mounting brackets each include lead in features comprising an alignment plate and a pair of guiding plates. The first mounting brackets include a portion between the lead in features that is spaced from the lead in features to provide housing clearance.

Abstract: A box mounting clip for mounting a junction box on a stud mounting bracket includes a base having a front face, a rear face, an upper edge margin, a lower edge margin, a left edge margin, and a right edge margin. A top flange extends forward from the upper edge margin and a bottom flange extends forward from the lower edge margin. The top and bottom flanges are configured to receive a stud mounting bracket therebetween. A positioning tab extends generally forward from the base at an angle and is configured to prevent rotation of the box mounting clip relative to the stud mounting bracket when the stud mounting bracket is received between the top and bottom flanges.

Abstract: The present invention discloses a ventilator mounting bracket, belonging to device installation brackets. Existing ventilator mounting brackets are smaller in adjustable distance range, difficult in installation and fixation and low in efficiency. The ventilator mounting bracket of the present invention is provided with two telescoping rod components which can extend and shorten and two folding rod components which are connected between the two telescoping rod components and can be folded and unfolded; the two folding rod components are unfolded to stretch the two telescoping rod components such that the two telescoping rod components and the two folding rod components form a mounting hole for mounting a ventilator; the two folding components are folded to withdraw the two telescoping rod components for packaging and transportation; moreover, the two ends of each one of the two telescoping rod components can be fixed at corresponding fixed parts by adjusting the length of the telescoping rod components.

Abstract: A panel wire support bracket may provide for support of a plurality of insulated electrical wires adjacent a building stud. The bracket may include an end cap including a stud face for flush fastening to the building stud, and a support bar with a plurality of holes and guide walls that extend downward from the holes. The holes and guide walls may be configured for locating and slidably supporting the wires passing through the holes. The guide walls may include flexible support for the wire with a protrusion to contact the wire. The flexible support may also include a tab operable for moving the protrusion away from contact with the wire. The holes may define hexagonal shapes and the guide walls may taper inwardly from the hole.

Abstract: A reusable electrical panel cover for protecting an electrical panel box made of a sturdy rectangular box-shaped panel cover with two length-edge sides and two width-edge sides, a front, a plurality of small openings for attaching the reusable electrical panel cover to an electrical panel box, at least one cutout in the front for access through the reusable electrical panel cover to the electrical panel, and at least one breakaway portion on one width-edge side and at least one breakaway portion on one length-edge side, with each breakaway portion having a breakaway edge.

Abstract: An electrical box bar hanger includes an adjustable channel having a plurality of locking tabs at distal ends thereof and first and second end plates with each of the first and second end plates having a plurality of locking apertures thereon. The first and second end plates are integrally connected to each distal end of the adjustable channel. When each end plate is bent 90 degrees against each corresponding end of the adjustable channel, each of the plurality of locking apertures aligns with each corresponding locking tab, such that the plurality of locking tabs can be inserted into corresponding locking aperture to allow the first and second end plates to be perpendicular with the adjustable channel without the use of welding.

Abstract: An apparatus including a polymeric housing to enclose electrical and optical components of a lighting fixture; and an outer frame affixed to the housing, the outer frame including a coupler to mechanically attach the apparatus to another device.

Abstract: An improved system for straightening and/or supporting a wall is provided. The system includes a joist spanner system that may be attached to an elongated vertical member positioned to abut a wall. The joist spanner system may include an inner bracket and an outer bracket in slidable or telescopic communication with one another. The inner bracket and outer bracket may each include a slot or track to provide slidable or telescopic adjustment of the spanner system. The slot or track may also provide an adjustable point for attaching the spanner system to the elongated vertical member. The inner bracket and outer bracket may also each include an end plate configured to be positioned to abut opposing joist members. The end plates may also include one or more apertures configured to receive a fastener for securing the spanner system to opposing joist members.

Abstract: A box mounting clip for mounting a junction box on a stud mounting bracket includes a base having a front face, a rear face, an upper edge margin, a lower edge margin, a left edge margin, and a right edge margin. A top flange extends forward from the upper edge margin and a bottom flange extends forward from the lower edge margin. The top and bottom flanges are configured to receive a stud mounting bracket therebetween. A positioning tab extends generally forward from the base at an angle and is configured to prevent rotation of the box mounting clip relative to the stud mounting bracket when the stud mounting bracket is received between the top and bottom flanges.

Abstract: An enclosure mounting system includes a bracket with a rigid body having first, second, and third parallel surfaces wherein the first and third surfaces are on one plane and the second surface is on a different plane. The first surface has at least two notches generally disposed at opposite ends of the first surface and a plurality of first surface fastening holes disposed along the length of the first surface. The second surface has at least two slide mounting openings and at least one second surface fastening hole. The third surface has a plurality of fastening holes disposed along the length of the third surface. The bracket is configured to fasten to a wall and to an enclosure while permitting the enclosure to also fasten to the the wall. The enclosure is mounted by leveling the bracket and fastening the bracket and enclosure to each other and the wall.

Abstract: Improvements in a bracket is disclosed for mounting an electrical box onto a mounting bar. An electrical box can be preinstalled onto the bracket and clamped onto the mounting bar using wings. Bendable tabs can be articulated to secure the bracket and onto a rail. Fasteners are used to secure an electrical junction box onto the bracket and an additional fastener secures the sub assembly to the rail. The tabs can be unbent for removal. An installer can secure the bracket and electrical box using a screw and adjust the position of the bracket on the mounting bar. The bracket provides a low profile assemble that allows the bracket to be installed between the inner surfaces of stud walls.

Abstract: Electric boxes and hanging brackets and more particularly adjustable electric boxes with parallel rails for connection with reciprocal parallel grooves in a hanging bracket that is configured to connect to a support, for example, a wall stud.

Abstract: In various embodiments, a television monitor wall mount is provided that allows a television monitor to be mounted flush against a wall, such as directly against the SHEETROCK, drywall or other wall surface material. When attached behind a wall to a wall stud, the television wall mount serves as a bracket to support the weight of the television monitor that is located on the front side of the wall. The weight of the television monitor is supported by bolts which extend through a mounting plate surface behind the wall and through the wall and into the back of the television monitor that is on the front side of the wall. When tightened, these bolts secure the back of the television monitor flush against the first front side of the wall.

Abstract: An adapter for connecting a fluid line to a housing section of a turbomachine is disclosed. A lower and an upper pair of flanges are arranged offset from each other about a channel axis of a fluid channel and are arranged without a space between each other in a direction of the channel axis, where the feed-throughs of the upper pair of flanges are open circumferentially.

Abstract: Improvements in a bracket is disclosed for mounting an electrical box onto a mounting bar. An electrical box can be preinstalled onto the bracket and clamped onto the mounting bar using wings. Wings on the bracket are biased towards a closed position and can be moved to an open position by squeezing tabs on said wings. A fastener hole on the central body of the bracket allows for installers to preinstall an electrical box onto said bracket. Thus, an installer can secure the bracket and electrical box using a screw and adjust the position of the bracket on the mounting bar.

Abstract: Electrical accessories and associated methods of use and manufacture are provided. In one embodiment, an electrical accessory can be provided. The electrical accessory can include a frame including two side walls in parallel relation to each other, and two end walls in parallel relation to each other, and disposed between the two side walls. The electrical accessory can also include at least one positioning arm mounted to at least one of the end walls, wherein the at least one positioning arm comprises a support leg mounted to the at least one end wall, and a prong substantially perpendicular to the at least one positioning arm, wherein a side wall portion of an adjacent electrical accessory can be positioned between the prong and at least one side wall.

Abstract: An apparatus for conduit to box unitary support bracket uses a plate. An electrical conduit box has end knockout openings on sides thereof, each end knockout opening having an elevation and size and location. The plate is disposed substantially perpendicular to said end knockout openings and comprising opposing rows of thin, selectively bendable fingers bent towards the knockout openings to support at least one wire carrier in alignment with an elevation and size and location of corresponding end knockout openings. A method of assembling bends tabs on the plate 90 degrees, installs a connector in an end knockout on a side of the box, bends in a direction toward the electrical conduit box opposing rows of a plurality thin metal fingers on the tab, secures the box to the plate, and feeds a wire carrier through the tabs, resting on the metal fingers bent and feeds the wire carrier into the connector.

Abstract: A floor stand system for mounting an electrical box above a floor includes an electrical box mount having a mechanical interface thereon. A set of substantially interchangeable floor supports have mating mechanical interfaces at their upper ends for connecting to the mechanical interface on the electrical box mount. The set of floor supports includes a plurality of floor supports having different fixed lengths. The floor supports are substantially interchangeable so that one of the floor supports having a fixed length suitable for supporting the electrical box mount at a desired elevation above the floor can be selected and connected to the electrical box mount using the mechanical interfaces to create a floor stand suitable for supporting the electrical box mount at the desired elevation above the floor.

Abstract: A customizable bus system includes a system module containing one or more accessory modules and is easily mounted along a surface in a workspace, such as the underside of a cabinet. The accessory modules provide conveniently located utility services and applications such as power, lighting or media connections, and may be interchanged within the bus system to provide particular services and applications where they are needed most. Additionally, the bus system may include a control center for controlling the operation of one or more of the accessory modules, such as manually or automatically. The bus system may also include multiple housings that are functionally linked. Additionally, the housings may be integrated with the applications and take the form of a modular stick, which can be easily installed to provide a service or application in an area, or removed and replaced by a modular stick having another desired service or application.

Abstract: An adjustable bracket may include a first hermaphroditic piece and a second hermaphroditic piece, substantially identical to the first hermaphroditic piece and rotated 180 degrees with respect to the first hermaphroditic piece, wherein sliding the first hermaphroditic piece with respect to the second hermaphroditic piece adjusts a width of the adjustable bracket.

Abstract: The invention relates to a method for providing a fire safe penetration in a building element, especially in a ceiling, floor or in a lightweight wall comprising a framework of profile elements and at least one outer covering being fixed to said profile elements.

Abstract: A bracket for holding conductors at a selected distance from the surface of a wall board to be mounted to a building stud. The bracket has a channel formed between a pair of plates and a bendable strap for closing the channel. The strap has an angularly oriented return to engage a side wall and a locking tab to hold the strap in closed position. The channel width is adjustable to accommodate different sized conductors. One of the plates has a bend line for adjusting the total width of the bracket for mounting on a narrower stud.

Abstract: A bracket secured to a vehicle body is firmly attached to an electrical junction box without causing any loosening. The electrical junction box includes a bracket securing section provided integrally on a casing outer surface and a bracket made of a resin molding material fixed on the bracket securing section by a bolt and a nut. Bolt holes are provided in the bracket securing section and the bracket, respectively. Positioning pins project near the bolt hole in one of the bracket securing section or the bracket. The positioning holes are provided in the other of the bracket securing and the section or bracket to receive the positioning pins. After the positioning pins are fitted in the positioning holes to position and hold the bracket on the bracket securing section, a bolt is inserted into the corresponding bolt holes and is fastened by a nut.

Abstract: A storage container includes a jar and a cap removably connected to the jar. The jar has a cavity defined by a first base and a first wall extending upwardly from the base. The cap has an upper portion connected to a lower portion by a connecting member. The upper portion has a second base and a second wall extending upwardly from the second base to define a receiving area that receives an item stored in the cavity of the jar. The connecting member has an opening therethrough to connect the storage container to a support.

Abstract: An electrical box and support assembly includes an electrical box and a mounting bracket. The mounting bracket has a support arm for coupling with the bottom side of the electrical box. The support arm has printed or embossed indicia identifying the load rating of the mounting bracket. The electrical box has a bottom wall with a sight window with a dimension to enable visual inspection of the indicia on the mounting bracket after installation of the electrical box to the mounting bracket.

Abstract: An electrical box support assembly for mounting an electrical box between a pair of studs is provided. The electrical box support assembly includes, but is not limited to, a pair of telescoping overlapping struts and a pair of engaging tabs detachably coupled with each end of the pair of telescoping overlapping struts. Each strut has a face to which the electrical box may be secured. Each of the pair of engaging tabs includes a first engagement member for primarily engaging a closed face of one of the studs and a side engagement member connected generally perpendicular with the first engagement member. Each end of the pair of telescoping overlapping struts may be detachably coupled at one of two positions on each engaging tab in order to accommodate electrical boxes of varying depths.

Abstract: A mounting assembly and method are provided for mounting an electrical fixture to a ceiling structure. The mounting assembly includes a mounting plate and a cover plate overlying the mounting plate. The mounting plate includes a plurality of strengthening ribs and a plurality of fastener holes for receiving fasteners to mount the mounting plate directly to the ceiling support structure. The mounting plate has a dimension to overlie the support structure and a portion of an electrical box mounted adjacent the support structure to define an open area of the electrical box. Mounting bolts extend downwardly from the mounting plate for attaching to a bracket which supports an electrical fixture such as a ceiling fan. The mounting bolts and the bracket supporting the electrical fixture are cantilevered with respect to the ceiling support. The mounting assembly can be used as a retrofit and mounted over an existing ceiling substrate with screws that can pass through the ceiling substrate into the ceiling support.

Abstract: An electrical box assembly is disclosed including an electrical box having at least one sidewall, the sidewall including an aperture formed therein to receive a threaded fastener. A mounting plate is provided that is attached to a support member and includes an elongate slot formed therein, wherein at least a portion of the slot is aligned with the aperture of the sidewall. A clamp bar abuts the mounting plate and has a threaded aperture formed therein, wherein the fastener extends through the aperture formed in the sidewall and the elongate slot formed in the mounting plate and is threadably received in the aperture formed in the clamp bar to movably attach the electrical box to the mounting plate.

Abstract: An electrical enclosure for use in poured concrete construction having a peripheral wall with opposed longitudinally extending walls longer than opposed laterally extending walls and at least one physical support located substantially midpoint along the opposed longitudinally extended walls to resist deflection of the opposed longitudinal walls caused by the hydraulic pressure of concrete poured around the enclosure. The physical support can be a crossbar extending across the opening of the electrical enclosure with the ends of the crossbar fixed to the longitudinally extending walls. The physical support can also be fastening sleeves extending along at least a portion of the width of the longitudinal walls for receiving elongated fasteners which extend into the concrete form thereby resisting deflection of the opposed longitudinally extending walls.

Abstract: An external power supply housing configured for multiple mounting options. In one or more embodiments, the housing of the invention comprises channels configured to accept straps for mounting said housing to a support structure by means of those straps. In one or more embodiments, the housing of the invention comprises threaded inserts configured to mount said housing to a support structure by means of threaded fasteners. In one or more embodiments, the housing of the invention comprises a snap engagement portion configured to snap engage a mating power supply caddy for mounting the housing to the caddy.

Abstract: Electrical accessories and associated methods of use and manufacture. In one embodiment, a system includes a plurality of electrical junction boxes. Each electrical junction box includes at least one wall with a pair of spaced apart holes, wherein the holes are sized and shaped to receive a pair of corresponding mounting devices. The system also includes at least one bracket. The bracket includes a pair of spaced apart mounting devices, wherein the mounting devices are sized and shaped to protrude through the pair of corresponding spaced apart holes in the plurality of electrical junction boxes. At least one of the plurality of electrical junction boxes is maintained in a relative stationary position with respect to the at least one bracket when the pair of spaced apart mounting devices protrudes through the respective pair of spaced apart holes in the wall of the at least one electrical junction box.

Abstract: Electrical accessories and associated methods of use and manufacture are provided. In one embodiment, an electrical accessory can be provided. The electrical accessory can include a frame including two side walls in parallel relation to each other, and two end walls in parallel relation to each other, and disposed between the two side walls. The electrical accessory can also include at least one positioning arm mounted to at least one of the end walls, wherein the at least one positioning arm comprises a support leg mounted to the at least one end wall, and a prong substantially perpendicular to the at least one positioning arm, wherein a side wall portion of an adjacent electrical accessory can be positioned between the prong and at least one side wall.

Abstract: A system for attaching an electrical box to a mounting assembly. The system includes a metallic mounting assembly and a metallic electrical box. A permanent fastener is utilized for attaching the electrical box to the mounting assembly. A magnet is positioned on or near the electrical box and mounting assembly providing a magnetic attraction with the mounting assembly and the electrical box, thereby temporarily attaching the electrical box to the mounting assembly. In one embodiment, the magnet is a magnetic disc positioned in an indentation on a top surface of the electrical box. The fastener may be one or more screws attached to a mounting bracket affixed to the mounting assembly which is inserted through the top surface of the electrical box and into the interior of the electrical box.

Abstract: An adjustable variable ring for electrical junction boxes including a base frame having a guide tab, a sliding insert having a box shaped frame, the sliding insert being configured to slide in and out of the base frame. A ratchet mechanism having a ratchet plate on the base frame including a plurality of steps, and a ratchet spring installed on an inner wall of the box shaped frame including an angled end tab and an angled mid tab protruding from the box shaped frame for engaging one or more of the plurality of steps. The sliding insert is configured to slide in and out of the base frame by disengaging the mid tab from the one or more of the steps by pressing on the end tab, and locks in the base frame by engaging the mid tab with the one or more of the steps.

Abstract: A latchable enclosure in the form of a box having a base, four sidewalls, and an open top face which may be closed by a cover plate or lid over its open top for covering components stored in the enclosure. The enclosure may be stiffened by providing a removable or permanent stiffening ring around the inside surface of the open top. This stiffening ring may also provide locations for attachment of components or mounting tracks. The enclosure may also include vertical mounting stiffeners that act to further increase the stiffness of the enclosure while also acting as mounting tracks for direct or indirect (through separate mounting brackets) attachment of components. The vertical mounting stiffeners may include a plurality of holes for said attachment.

Abstract: A case structure and a method for pre-forming the same are described. The pre-forming method includes the following steps. A first case body and a second case body are supplied. Two side plates of the second case body are bent, such that the two side plates respectively form an initial angle with the bottom plate. The second case body is disposed in the first case body. The two side plates are pulled to respectively come close to two side walls of the first case body, such that the bottom plate forms a curved surface in the first case body. When having an object disposed therein, the case structure overcomes a downward pressure generated by the object through the curved surface, thereby preventing the first case body and the second case body from sagging out of the case structure.