Abstract: An electronic equipment cabinet structure includes a frame having a plurality of vertical support posts and a plurality of cross members that connect the support posts together. In one aspect, the cabinet structure further includes at least one caster plate connected to one of the plurality of cross members. In another aspect, the cabinet structure further includes at least one bracket having a base and two sides extending in the same direction away from the base, the edges of the two sides being connected to one of the cross members and the base being connected to one of the vertical support posts. In still another aspect, the cabinet structure further includes at least one bracket connected to one of the vertical support posts, wherein the bracket includes a first embossed portion nested within a corresponding second embossed portion on the vertical support post to which the bracket is connected.

Abstract: A frame for a cabinet is provided. The frame includes a side-to-side beam, a front-to-back beam connected to the side-to-side beam, and a vertical post connected to the side-to-side beam. The front-to-back beam is inset relative to the vertical post to form a cable-routing area along a side of the frame.

Abstract: A power supply assembly which can drive a number of different devices at different voltages. A rack holds a number of breaker modules, and each breaker module can connect to one or many breakout boxes. The breakout boxes are keyed to the breaker modules, so that the breaker boxes will not be energized with power unless they are the proper voltage and/or configuration to receive that power. The coil of a contactor in the breaker module is powered by a key wire that is connected through specified pins in the breakout box. Therefore, no power is ever provided to the breakout box unless it is of the proper voltage configuration. In addition, feeder power to the power supply assembly is provided over bolted connections, without any wire connections between the power feed and the circuit breaker.

Abstract: A programmable logic controller (PLC) assembly includes a bottom housing with a base, a first plurality of elongate alignment features extending from the bottom housing transverse to the base, and a first connection feature. The PLC assembly includes a central processing unit with a circuit board and at least two receptacles therethrough configured to engage and slide along at least two of the first plurality of alignment features. The at least two of the first plurality of alignment features are positioned asymmetrically with respect to the base. The PLC assembly includes an upper housing with a second connection feature configured to slidably couple with the first connection feature and a second plurality of elongate alignment features configured to slidably engage at least two of the first plurality of alignment features, which are positioned asymmetrically with respect to the base.

Abstract: A housing for a connecting unit, particularly an electronic unit, includes at least one plug connector having a plug axis. The housing also includes a strip. The longitudinal axis of the strip is in a spatial plane with the plug axis of the plug connector.

Abstract: Electronic device enclosure includes a base plate, a bracket, and a sliding pole slidably mounted to the bracket. The base plate includes a number of protrusion portions. A locking hole is defined in each of the number of protrusion portions. The locking hole includes two opposite first sides and two opposite second sides. A resisting block extends from the sliding pole. The resisting block includes two opposite third sides and two opposite fourth sides. The third sides are aligned to the corresponding first sides. The resisting block is passed through and rotated in the locking hole. The third sides are misaligned to the corresponding first sides. The resisting block is locked in the locking hole to mount the bracket to the base plate.

Abstract: A junction box adapted to provide an electrical connection to an electrical wire attached to a photovoltaic panel. The junction box has a lower portion which has an entry slot to allow entry of the wire into the junction box and a raised protrusion over which the wire is bent and formed to be substantially in the same shape as the raised protrusion. The junction box also has a clamp adapted to be attachable to said lower portion, whereby the clamp holds the wire in place for providing the electrical connection. The wire is preferably bus ribbon. The lower portion preferably has an elastic polymeric element disposed between the raised portion and the wire. The raised protrusion may have an elastic polymeric element.

Abstract: An electrical assembly for a motor controller is disclosed that includes an electrical lead. The electrical lead has a conductive trace within an insulating material and that extends a length between first and second ends. An electrical pad is in electrical continuity with and extends from the conductive trace through the insulating material at the first end. The pad includes an aperture providing a securing feature. An electrical component is supported by and integral with the second end, in one example. The electrical component is in electrical continuity with the conductive trace at the second end. A bus bar provides a joint having a first cross-sectional area. The electrical lead is flexible and is removably secured to the joint by the securing feature to provide electrical continuity from a capacitor to the bus bar. The flexible electrical lead has a second cross-sectional area substantially less than the first cross-sectional area.

Abstract: A case includes a case body and a cover member. The case body includes a bottom wall portion having a surface area which allows selective accommodation of a first substrate and a second substrate and an outer peripheral portion. The outer peripheral portion includes a front wall portion (a reference wall portion), a pair of left and right wall portions which come into abutment with lateral sides of the first and second substrates, and ribs (first restraint portions) configured to restrain the first substrate in cooperation with the front wall portion at a position where a reference side of the first substrate comes into abutment with the front wall portion. The case body includes a diaphragm (a second restraint portion) configured to restrain the second substrate in cooperation with the front wall portion at a position where a reference side of the second substrate comes into abutment with the front wall portion.

Abstract: A harness outlet through which a wiring harness is passed is provided on a sidewall of a case of an electrical junction box. A harness guide is extended form a circumference of the harness outlet to protect the wiring harness and to regulate a path (outlet direction) of the wiring harness. At a side near the harness outlet, the harness guide covers a whole circumference of the wiring harness. At a side away from the harness outlet, the harness guide covers both sides and an upper portion of the wiring harness, and a portion for covering the lower portion of the wiring harness is not provided on the harness guide.

Abstract: A protective housing for an electronic device includes a main body, a protective cover, and a connecting mechanism. The protective cover is rotatably and detachably mounted to the main body by the connecting mechanism. The connecting mechanism includes a first magnetic assembly, a second magnetic assembly, and a mounting base. The first magnetic assembly is assembled within the main body, the second magnetic assembly is assembled within the mounting base. The mounting base is pivotally hinged to the protective cover, and the first magnetic assembly and the second magnetic assembly attract each other, thereby connecting the main body and the protective cover together.

Abstract: An enclosure for housing electrical equipment is disclosed. The enclosure is produced by thermoforming four separate pieces or bodies together to form the top and bottom of the enclosure. The enclosure is made of a moldable material, such as plastic or fiberglass.

Abstract: An electronic device having an enclosure formed from at least one ceramic cover and a peripheral structure adjacent the periphery of the ceramic cover is disclosed. The peripheral structure can be secured adjacent to the ceramic cover with an attachment member. The ceramic cover can include a recess to receive the attachment member. The peripheral structure can be molded adjacent the ceramic cover so that a gapless interface can be formed between the peripheral structure and the periphery of the ceramic cover.

Abstract: A box main body which can smoothly attach cover members each other and prevent generation of abnormal noise is provided. An electric junction box has the box main body including two covers attached to each other and an electric power distribution unit. The box main body has two covers attached to each other. Furthermore, the box main body has a thin portion arranged in the inner wall of the upper cove, and a tapered portion projecting from a bottom surface of the thin portion toward the peripheral wall of the lower cover, and gradually tapering toward the peripheral wall of the lower cover.

Abstract: A control unit, in particular for a motor vehicle, the control unit having a housing, which has at least one heat dissipating area in which at least one electrical and/or electronic module having at least one heat dissipating element is situated, it being provided that the heat dissipating element is heat conductively connected to the heat dissipating area via a heat conducting medium which is introduced into the interior of the housing through at least one housing opening and which has a paste-like consistency, at least when introduced. A corresponding method for manufacturing a control unit is also described.

Abstract: An electrical outlet box for installing in a hole defined in a pre-existing, finished floor of a building. The outlet box comprises a box portion, a backplate, and a cover plate. The box portion comprises a first pair of opposing walls, a second pair of opposing walls, a bottom wall, and a mounting flange. Top edges of each wall of the first and second pairs of opposing walls define an open top end of the box portion. The bottom wall is affixed to bottom edges of each wall of the first and second pairs of opposing walls, thereby defining a cavity within the first and second pairs of opposing walls and the bottom wall. The cavity is adapted for receiving an electrical outlet. The mounting flange surrounds the open top end and is adapted for sitting flush against the installed floor when the outlet box is mounted in the hole.

Abstract: In a power supply module of a linear actuator and a conversion assembly thereof, the power supply module includes a casing (10), a circuit control unit (11), and a conversion assembly (2). The casing (10) is provided with a dividing plate (102) for dividing the interior of the casing (10) into a first space (103) and a second space (104). The circuit control unit (11) is disposed in the first space (103), and the conversion assembly (2) is disposed in the second space (104). The conversion assembly (2) further includes a circuit board set (20) and a frame (21). The circuit board set (20) is electrically connected with an inductive element(A), a rectifying element(B) and a filtering element(C). The circuit board set (20) is mounted onto the frame (21) to form a modular structure.

Abstract: An electrical box assembly includes an electrical box and a plurality of partition plates to divide the electrical box into separate compartments to accommodate high voltage wiring device and low voltage wiring devices. The partition plates generally have an angled portion so that compartments can access a knockout in the bottom wall of the electrical box. A plurality of device frames are positioned above the partition plates and coupled to a central support member in the electrical box and a side wall of the electrical box to support an electrical wiring device in the compartments. A cover plate having a configuration corresponding substantially to the shape of the device frame is attached to the device frame and side wall. The cover plate has an opening adapted to receive the wiring device.

Abstract: The waterproof box includes a body case and a cover mounted to the body case by making a hook portion at one end of the cover engaged with a projection at one end of the body case and rotatably moving the cover around the hook portion. The one end of the respective body case and the cover has a double-walled structure having an outer wall and an inner wall. With the cover mounted to the body case, the outer wall of the body case is located inside the outer wall of the cover, the inner wall of the cover is located inside the outer wall of the body case, the inner wall of the body case is located inside the inner wall of the cover, and the outer wall of the body case and the inner wall of the cover are arranged with a space between each other.

Abstract: A rotatable routing guide assembly for fiber optic cables routed in a fiber optic equipment shelf is disclosed. The assembly comprises a guide portion, an attachment feature and a keyed receiver. The guide portion has a bottom, a top, a deformable first wall, a deformable second wall and a third wall forming a plurality of segments, and is configured to receive fiber optic cables of different sizes by different ones of the plurality of segments. The attachment feature removably attaches the guide portion to the shelf. The attachment feature has a first tab forming a first notch with the guide portion, and a second tab forming a second notch with the guide portion. The keyed receiver is located in the shelf and has a lip extending partially around an interior edge. The lip is received in at least one of the first notch and the second notch and friction fit between at least one of the first tab and the second tab and the guide portion.

Abstract: A box hanger clip is provided for coupling to an electrical box for supporting the electrical box during use. The box hanger clip has at least one and typically two L-shaped coupling tabs that are received in apertures in a wall of the electrical box and hook to the inner surface of the electrical box. The box hanger clip has a body extending substantially perpendicular from the coupling tabs away from the electrical box where the body is configured for coupling to a support such as a cable. At least one bendable stabilizing tab is provided on the body of the box hanger clip which can be bent out of the plane of the body. The stabilizing tab contacts the outer surface of the electrical box to maintain the box hanger clip in the upright position.

Abstract: A cover for an electronic device includes first and second planar members wherein, a first end of the second planar member is disposed adjacent to a first end of the first planar member. The cover also includes a coupling arrangement configured to be attached to a first end of the electronic device and configured to permit rotation of the first and second planar members around the first end of the electronic device, and a rotational hinge configured to couple together the first ends of the first and second planar members such that the second planar member is rotatable with respect to the first planar member.

Abstract: A cable management system for a patch panel component having a connectivity interface configured to connect with cables includes a cable support plate and two cable support brackets. Each cable support bracket includes a support bar, a first bracket and a second bracket. A fastener hingedly attaches the first bracket to the second bracket and is positioned to slideably mount the first and second brackets to the support bar. The first and second brackets include mounting plates that move toward and away from one another when sliding the cable support brackets. The brackets mount to opposed projecting pins on a patch panel. The fastener holds each cable support bracket in the desired position.

Abstract: This is directed to systems and methods for coupling sections of an electronic device together. Sections of an electronic device can be coupled together via “knuckles.” The particular shape and structure of the knuckles can be based on various design considerations. For example, in some embodiments each section can function as an individual antenna. In this case, the knuckles can be designed in order to provide electrical isolation between the sections, thus allowing proper operation of the antennas. For example, the knuckles can be formed from a dielectric material, etc. As another design example, the knuckles can be designed in order to provide increased strength in areas of high strain, and/or to counteract torsional twisting in areas of high impact. As yet another design example, the knuckle can be designed in a manner that is aesthetically pleasing or which otherwise meets cosmetic requirements.

Abstract: A wire security device is provided or the protection of conduit body of a conduit for a wire. Also provided is a method of enclosing a conduit body with a wire security device such that only authorized persons can unlock the wire security device and access the conduit body.

Abstract: A connection mechanism is provided. The connection mechanism includes a first fixing member, a fixer, an elastic element, a second fixing member and a connection element. The first fixing member includes a first side and second side, wherein the first side is opposite to the second side. The fixer passes through the first fixing member and is pivotable relative to the first fixing member along the first direction, wherein the fixer has a head portion and an end portion. The head portion is located on the first side and has an outer surface, and the second portion protrudes from the second side. The elastic element is disposed on the first side of the first fixing member and is abutting the outer surface, to prevent the fixer from rotating along a direction opposite the first direction. The connection element is disposed on the second fixing member and has a hollow structure.

Abstract: Systems and method for installing computer equipment and power distribution equipment in facilities is provided. In one aspect, the present invention provides a power distribution rack, and uninterruptible power supply rack and a plurality of equipment racks. A plurality of power cables are run from the power distribution rack to each of the plurality of equipment racks using power cable tracks located on the roofs of the equipment racks.

Abstract: A terminal box includes: a main body (101); at least one pair of terminal strips (106) which are connectable to a positive electrode and a negative electrode of a solar cell module; and a backflow prevention diode (118) bridged between the terminal strips (106) to connect the terminal strips (106). The terminal strip (106) and the backflow prevention diode (118) are contained in the main body (101). The terminal strip (106) includes: a supporting part (S) for supporting a lead wire (118a) of the backflow prevention diode (118) in a mounted state; a pinching part (K) for supporting the lead wire (118a) in a pinched state; and a recess (119B) which is provided between the supporting part (S) and the pinching part (K) and configured to position a connecting solder upon connecting the lead wire (118a) and the terminal strip (106).

Abstract: A sensor system includes a wiring harness including at least one wire, a grommet, a nugget, a sensor, and a harness sleeve, wherein the grommet includes at least one passageway configured to receive the wire and the nugget includes at least one terminal molded into the nugget and coupled to the wire. A mineral insulated cable may be coupled to the sensor and to the terminal and the harness sleeve may define at least one cavity configured to receive the nugget and at least a portion of the grommet. The harness sleeve may be coupled to the mineral insulated cable and may include a first crimp coupling the harness sleeve to the grommet. The harness sleeve may also include a second crimp coupling the harness sleeve to the nugget.

Abstract: A terminal block cover includes a rectangular top portion with an inner surface, an outer surface and overall length; retention portions connected to the top portion; and a plurality of barriers extending from the inner surface. The cover has a barrier spacing length between each of the plurality of barriers, and the ratio of overall length to barrier spacing of at least 5.124:1. The terminal block cover can cover a terminal block with terminals.

Abstract: A protective shell holding a portable electronic device to provide optimized sound effects includes a sound release portion. The protective shell includes a body and a sound effect output portion located on at least one edge of the body. The sound effect output portion includes a curved wall surface and at least one rib located on the curved wall surface. The portable electronic device leans on the at least one rib to form at least one gap with the curved wall surface. Hence the sound release portion can release sound through the gap. The curved wall surface also can provide sound resonance to adjust output quality of the sound, thereby is achieved optimized sound effects.

Abstract: A recessed lighting fixture includes a lamp housing and a separate compact junction box, which contains a power supply that drives the lamp and serves in part to divide the interior cavity of the junction box into two separate wiring compartments. The junction box has two end walls spaced along an axis and a releasably secured, sleeve-like cover (side wall) surrounding and closing the cavity. The cover can be moved axially in either direction relative to the end walls to open the wiring compartments. The junction box and the lamp housing are mechanically connected only by a flexible conduit and a flexible tether, which prevents undue strain on the electrical connections between the joined components. The lighting fixture is particularly suitable for retrofit installations, especially where small-aperture downlights are desired.

Abstract: An electrical device cover with a rotatable lid. An implementation of a weatherproof electrical device cover may include a base unit having a face, an electrical device aperture, and a box mounting screw aperture therethrough. A lid may be rotatably coupled to the base unit and rotate over the base unit in a plane substantially parallel with the base unit. The lid may cover the electrical device aperture of the base unit when the lid is closed over the base unit.

Abstract: The invention relates to a contact-making and connection arrangement on the basis of film conductors introduced in a housing, wherein ends of the film conductors have a contact-making section and at least partly lie one above another. According to the invention, a double-sided self-adhesive or adhesive-coated conductive nonwoven material is situated between the contact-making sections facing one another, said material mechanically and electrically connecting the ends of the film conductors. Furthermore, the housing is embodied such that it is divided in the plane of the film conductors that have been introduced or are to be introduced, wherein the housing parts form half-shells and, in at least one half-shell, stamp-like projections are provided which lead to a deformation of the contact-making layer in such a way that a reduction of the electrical contact resistance of the connection occurs.

Abstract: A power device suited for being assembled in a chassis and connected with a plug is provided. The power device includes a housing, and a receptacle, a spring clamp, a position limiting element disposed on the housing. The plug is removably connected to the receptacle. The spring clamp has a moving end. The position limiting element is located between the spring clamp and the receptacle. The position limiting element and the moving end of the spring clamp are linked together to move between a first position and a second position relative to the housing. When the plug connects to the receptacle, the position limiting element is interfered with the plug and the spring clamp simultaneously so that the spring clamp is constrained at the first position.

Abstract: A grade level enclosure conversion assembly adapted for converting a pedestal housing between a flush-to-grade and an above-ground pedestal installation. The base of the pedestal housing carries a plug removably mounted to a swing-arm in the grade level enclosure. The swing-arm holds the pedestal assembly in a stored position in the flush-to-grade installation, containing wiring for service connections. To convert to the above-ground installation, a solid grade level cover plate lid is removed, and the pedestal assembly is rotated on the swing arm to a raised position from which it can be removed from the swing-arm (along with the wiring) and fed through an access opening in a separate cover plate lid. The plug on the pedestal housing is then positioned in the access opening to hold the pedestal assembly in the above-ground position.

Abstract: A universal electrical box which includes a body having at least one opening for receiving an electrical device. The device can also include at least one mounting bracket coupled to the body, and at least one frame configured to be coupled to the at least one body. In addition there is at least one duplex electrical mounting plate configured to couple to the at least one frame. In this case, the duplex electrical mounting plate is configured to receive a duplex electrical device. In addition, there is at least one sealing gasket configured to be coupled to the body between the at least one frame and the body. This design allows for a universal configuration which allows for multiple different types of electrical devices to be coupled to the enclosure.

Abstract: A permanently-effective element for discharging any accumulation of static electrical charges from the housing of an electronic device includes a main body with an anodized layer formed on the main body. The main body defines a plurality of blind holes of varying shapes and sizes, topped with a layer of conductive paint held in place with a binding film. The incidence of oxidation of the discharging element is significantly reduced and the effectiveness of the discharging element thus improved. A method for manufacturing the housing is also provided.

Abstract: An arc-resistant switchgear enclosure has a vent opening and a vent flap. Normally the vent flap is open to allow air to circulate through the enclosure. However, in the event of an arc fault explosion in the enclosure, the vent flap is forced to close by the explosion. As the vent flap closes, a flexible latch member moves along a keeper and prevents the vent flap from reopening. In some embodiments, the latch member contacts the keeper and props the vent flap open for normal operation.

Abstract: A concrete exclusion structure is formed by a housing having a shell, end walls, and one or more score lines of reduced wall thickness. The housing defines an interior void that is dimensioned to enclose a coupler assembly. Knockouts in the end walls or knockout cones allow passage of tubes associated with the coupler assembly. The exclusion structure prevents uncured concrete from contacting the coupler assembly. The structure can fracture after the concrete has cured thereby allowing portions of the coupler assembly to move relative to each other. Such fracture is typically about one of the score lines.

Abstract: A resin additive for a polyphenylene sulfide includes a diamine compound expressed by a following general chemical formula (1), in which A is an oxygen atom or a sulfur atom, X is a hydrogen atom, an alkyl group with a carbon number of six or less, or an aryl group, and n is a natural number of 1 to 10. A polyphenylene sulfide resin composition includes the resin additive and a polyphenylene sulfide resin. An electronic device includes a molded product of the polyphenylene sulfide resin composition.

Abstract: A support container includes a base and a lid. The base includes a base wall, a pair of substantially vertical, elongated flanges, and a lower flange. The base wall at least partially defines a receptacle. The lower flange cooperates with the pair of substantially vertical, elongated flanges to define a slot. The lid includes an upper portion, a side wall, and an upper flange. The side wall extends substantially downwardly from the upper portion and defines a pair of substantially vertical, elongated channels. Each of the substantially vertical, elongated flanges extends away from the base wall and the receptacle. When the lid is installed on the base, the side wall substantially covers the slot, the pair of substantially vertical, elongated flanges nests extensively within the pair of substantially vertical, elongated channels, and the lower and upper flanges cooperate with one another to define a conduit for the receptacle.

Abstract: Disclosed is an electric junction box in which a pair of cassette blocks is arranged at intervals to each other in a component-attaching direction, capable of downsizing without increase of the number of component. The electric junction box comprises a pair of cassette blocks, configured to attach electric components thereto, arranged at intervals mutually in a component-attaching direction; and a cross-sectionally U-shaped bus bar attached to one cassette block, electrically connected to the electric components, a middle of the bus bar being arranged in a direction perpendicular to the component-attaching direction, both ends of the U-shaped bus bar being arranged in the component-attaching direction, wherein the electric components attached to the other cassette block are opposed to the middle of the bus bar.

Abstract: An apparatus for electrical isolation of metallic hardware is provided and includes an item of hardware and an isolation sheet disposed in contact with the item of hardware. The isolation sheet includes first and second opposing sides at least one of which is anodized.

Abstract: An electronic device includes an enclosure body, a mounting apparatus, a securing apparatus, and a connector. The connector defines an engaging hole. The mounting apparatus includes a receiving housing and a first elastic member mounted in the receiving housing. The securing apparatus includes a sliding member mounted to the receiving housing and an engaging member. The engaging member is secured between the receiving housing and the sliding member. The engaging member is engaged in the engaging hole in a first position. The connector is received in the receiving housing and the first elastic member is compressed between the receiving housing and the connector in the first position. The connector moves out of the receiving housing from the first position to a second position when the sliding member slides relative to the receiving housing, to drive the engaging member to disengage from the engaging hole.

Abstract: Insulating materials disposed within the housing are protected through the use of removable protective layers, which can be fit over the insulating components. In some embodiments, these removable protective layers are dimensioned so as to fit over the insulating components without the use of any fasteners. In other embodiments, a fastener, such as a set screw or clip, may be used to hold the removable protective layer in place. These removable protective layers can be placed over any insulating component in a housing, such as a high voltage feed through insulator. During preventative maintenance cycles, the coated removable protective layer is removed from the insulating component, and a new protective layer is used to cover the insulating component.

Abstract: A lightweight radio/CD player for vehicular application includes a case and frontal interface formed of polymer based material molded to provide details to accept audio devices and radio receivers, as well as the circuit boards required for electrical control and display. The case and frontal interface are of composite structure, including an insert molded electrically conductive wire mesh screen that has been pre-formed to contour with the molding operation. The wire mesh provides shielding and grounding of the circuit boards via exposed wire mesh pads and adjacent ground clips.

Abstract: An electrical junction box provides a frame and a cover that covers an opening portion of the frame. There is a difference of elevation in an edge of the frame, and the edge includes a lower portion, a higher portion, and an inclination portion. A double wall formed of an exterior wall and an interior wall and positioning the edge of a peripheral wall between the exterior wall and the interior wall is provided to the cover. There is a difference of elevation in the edge of the interior wall similarly the frame, and the edge includes the lower portion, the higher portion, and the inclination portion. Also, a lapping amount between the peripheral wall and the interior wall at the inclination portion is formed larger than a lapping amount at the lower portion.

Abstract: Provided is an electrical junction box which can easily attach a block to an inner side of a frame without the need for visual positioning of a lock portion of the block and a lock receive portion of the frame. An electrical junction box includes a frame and a block to be attached to an inner side of the frame. The block includes a lock portion, and the frame includes a lock receive portion to which the lock portion engages. Four faces of the frame arranged to surround the block include a tapered face for guiding the block to a proper attachment position. The frame includes a double wall including an outer wall and an inner wall, and a rib connecting the outer wall and the inner wall. The rib is extended above the inner wall, and the tapered face is provided to an extended portion of the rib.

Abstract: A server enclosure includes an enclosure body, a connecting member, and a loading member. The enclosure body includes a bottom wall and two sidewalls extending from the bottom wall. The two sidewalls is substantially parallel to each other. The connecting member includes a top panel and two resisting panels extending from the top panel. The top panel is substantially parallel to the bottom wall. The loading member includes a bottom panel substantially parallel to the top panel and two connecting panels extending from the bottom panel. A cross section of the loading member, taken along a plane parallel to the sidewall, is U-shaped. The bottom panel is secured on the top panel. The loading member is secured between the two sidewalls.