Abstract: A restrain adjustment mechanism (100) has a buckle (122) with a rotatable dial (302) which is connected by a gear to a pair of strap adjusters (118, 120). Rotation of the dial 302 adjusts the straps (102, 104). The adjusters (118, 120) are removably mounted to the buckle (122).

Abstract: An automatic process is provided for continuously assembling male and female fasteners on a carrier sheet, and includes a) continuously advancing the carrier sheet to pass through a narrowest gap between first and second rollers, b) sequentially feeding the male and female fasteners onto the first and second rollers, respectively, and c) rotating the first and second rollers to permit the male and female fasteners respectively on the first and second rollers to sequentially move into the narrowest gap. Each of the male fasteners, once moving into the narrowest gap, extends through the carrier sheet to be brought into fastening engagement with the corresponding female fastener in the narrowest gap.

Abstract: An assembling apparatus is provided for continuously assembling male fasteners and female fasteners on a carrier sheet. The assembling apparatus includes two rollers each having a plurality of retaining holes, a suction device coupled to apply vacuum to the retaining holes, and two feeding devices for feeding male and female fasteners respectively to the two rollers. In the process of continuously advancing the carrier sheet to pass through the narrowest gap between the rollers, each male fastener retained on one of the rollers, once passing the narrowest gap, is permitted to extend through the carrier sheet to be brought into fastening engagement with the corresponding female fastener retained on the other one of the rollers.

Abstract: In this molded surface fastener, plural engaging elements having a stem portion and an engaging head portion formed integrally on the stem portion are standing on the base portion, at least one pawl portion having a pawl width dimension narrower than a width dimension at a boundary between the stem portion and the engaging head portion is protruded on an outer peripheral edge part of the engaging head portion, and a back surface of pawl of the pawl portion is formed at different angles with respect to a back surface of head portion of the engaging head portion. Such a molded surface fastener of the present invention has a substantial engaging force with respect to a female surface fastener and can make a texture of its surface comfortable.

Abstract: In this molded surface fastener, an engaging element includes a columnar stem portion, and micro pawl portions protruding outward from an upper end outer peripheral edge of the stem portion in a plan view of the engaging elements. A pawl width dimension of the micro pawl portions is smaller than a line segment connecting two points on the upper end outer peripheral edge of the stem portion. The micro pawl portions protrude toward a base portion. This molded surface fastener has a high peel strength and a shear strength with respect to a female surface fastener.

Abstract: A method of sealing a zipper closure has a first waterproof element in the form of a sealing zone base and a second waterproof element in the form of a waterproof interlocking zipper fastener. The first waterproof element and the second waterproof element are placed in overlapping engagement to define a sealing zone. One or more sealing elements are placed in the sealing zone to prevent leakage.

Abstract: A slide fastener tape is provided. The slide fastener tape extends in a longitudinal direction. The slide fastener includes a weave structure formed with warp threads arranged in the longitudinal direction, and weft threads arranged along a transversal direction perpendicular to the longitudinal direction. The slide fastener tape includes a cord arranged along one side edge portion of the fastener tape. The weft threads are made from filament yarns and the warp threads comprise a plurality of threads made from spun yarn.

Abstract: An intelligent wearable device includes a housing (1) and a display unit (2) mounted on the housing (1). The display unit (2) includes a first display screen (21) and a second display screen (22). The first display screen (21) is a flexible display screen, and the first display screen (21) includes a first display area (211), a bendable area (212) and a second display area (213) which are sequentially connected, wherein the first display area (211) and the second display area (213) are foldably connected to each other by means of the bendable area (212), and a back face of the first display area (211) is connected to the housing (1). The second display screen (22) is an electronic ink screen, and a back face of the second display screen (22) is connected to a back face of the second display area (213) in a laminated manner.

Abstract: Example ambulation aid apparatus and associated methods of manufacture are disclosed and described herein. An example single-point supportive ambulation aid is formed as an integral part. The integral part of the example ambulation aid is formed to integrate: a body portion formed to support a user; a graspable area integrated with the body portion and providing an area to be gripped by a user; and a foot portion integrated with the body portion and providing a single point of contact with a walking surface to facilitate user movement and support in conjunction with the body portion and graspable area through the integral part.

Abstract: A kit and a method of providing a kit for compact storage and maximum portability of a reusable compressible dress intended for emergency use, wherein the kit includes a wrinkle-resistant polymeric fabric dress, a pouch formed of a flexible, waterproof, tear-resistant material, including means for selectable opening and closure of a longitudinal opening thereof, wherein the dress is capable of selectable folding and compression to less than the volume of the pouch and which is press-or slip-fittable thereinto, and the kit includes a reclosable sealable plastic zip-top bag for receiving soiled garments, separate from that of the pouch.

Abstract: A containment device that opens to form a mat or work surface that has a raised lip or edge structure that contains items on the mat or work surface. The containment device closes or converts from the mat configuration to create a bag or flexible container for holding the items inside, where the lip is gathered or compacted to form a passage. In some embodiments, the containment device may include a cord that runs inside the lip, which can be used to gather or compress the lip and change from the open mat configuration into an essentially or mostly closed bag configuration. In such embodiments, the cord may include a cord lock that may be adjustably deployed to clamp the cinch cord and the lip in a position that maintains the device in the bag configuration.

Abstract: A two-piece EMR-shielding smart-key holder is disclosed including a first piece having a cavity within a body sized to hold one or more smart keys, an EMR-shielding layer lining the cavity, and a first piece of a touch fastener incorporated into a second face of the body. A second piece of the smart-key holder includes a second piece of the touch fastener. A method is also disclosed including adhering a second face of the second piece of the smart-key holder to an object's surface leaving a first face of the second piece having the second piece of the touch fastener exposed. The method also includes fastening the first and second pieces of the smart-key holder together by way of complementary touch-fastener features, thereby attaching the first piece to the object's surface shielding the one or more smart keys from at least radiofrequency communications in place on the object's surface.

Abstract: The present invention proposes a self-standing housing body solving a typical program and stably standing as a penholder. Specifically, the self-standing housing body according to the present invention is a self-standing housing body including a housing portion having a main housing space surrounded by a bottom surface and side surfaces standing from the bottom surface, and a lid portion having a sub-housing space surrounded by an upper surface and side surfaces standing from the upper surface. An upper side of one side surface of the housing portion and a lower side of one side surface of the lid portion form a joint portion, and about the joint portion as a rotation axis, the lid portion is rotatably joined to the housing portion.

Abstract: A portable container, of the type of a trolley, suitcase, trunk, crate, and the like, includes at least one outer shell, for delimiting at least one accommodation compartment for objects in general, and an extractable handle, which can move between a minimum protrusion configuration, in which the handle is arranged in a respective seat, and at least one maximum protrusion configuration, in which the handle is extracted from the seat. The container includes at least one protrusion that protrudes from the edge of a slot and provided along the handle at least one respective recess provided on a tooth that contrast free movement of the handle.

Abstract: A strap used in a portable terminal includes a plate portion configured to be mounted on a surface of a main body of the portable terminal by attaching to a strap fixing portion of the main body, a rotation mechanism portion located at a substantially central portion of the plate portion and having a rotation axis located in a fourth area of the main body when the strap is mounted to the main body, a grip portion provided on the rotation mechanism portion, and a folded portion provided on the plate portion, and located at a position of a third area of the main body so as to be substantially orthogonal to a longitudinal direction, and to be bent in a direction toward the surface of the portable terminal when the strap is mounted to the main body.

Abstract: A rollable luggage assembly for piggybacking a second suitcase on a first suitcase includes a plurality of first rollers that is coupled to a bottom of the first suitcase. A first handle is selectively extensible from the first suitcase so that the first handle is positioned above and perpendicular to a top of the first suitcase. The first handle is configured to be grasped in a hand of a user to urge the first suitcase to roll across a surface. A plate, which is coupled to and is selectively extensible from the bottom of the first suitcase, is selectively positionable in a retracted configuration, wherein the plate is stowed adjacent to the bottom, and an extended configuration, wherein the plate extends from and is perpendicular to a front of the first suitcase. The plate is configured to position an article so that the article is locomoted with the first suitcase.

Abstract: An automatic hair curler includes a handle, a heating rod extending from the handle, a rotating seat extending at least partially around a circumference of the heating rod and extending a height from the handle at least partially overlapping a height of the heating rod, and a hair curling cavity formed between an inner surface of the rotating seat and an outer surface of the heating rod.

Abstract: An apparatus for styling hair includes a hinged frame two arms and a hinge. A platen for engaging hair and having a plurality of through holes arranged in a pattern has a mounted surface against a first one of the arms and a free surface facing a second one of the two arms. A pin carrier is interposed between the first one of the arms and the flat plate, having a plurality of pins arranged in the pattern for inserting into the through holes. A mechanism is coupled to the pin carrier, movable between an extended state wherein the plurality of pins protrudes above the free surface and a retracted state wherein the plurality of pins are retracted below the free surface. The perforated platen and a mating platen can be heated for styling hair and a user can easily move the pins between the engaged and retracted states.

Abstract: Presented is an improved and multifunctional headband. The headband includes an annular band portion to be worn about the head of a user for restraining and controlling user's wet hair strands, and extensions having a predefined shape and length and attached to the annular band portion extending away therefrom. The extensions are made of a fabric having absorption capability so that when inserted penetrating within the wet hair strands of the user, the extensions absorb water or water moisture from the wet hair strands of the user to dry them up. Further, the headband can be used to wring the hair to efficiently dry the user's wet hair without damaging user's hair. Furthermore, the headband can be worn as an accessory for decorative or ornamental purpose.

Abstract: The present invention relates to a compact container having a contamination-preventing cooling plate and, more specifically, to a compact container having a contamination-preventing cooling plate, comprising: a discharge means, inside the compact container, for discharging cosmetics; a discharge plate having a discharge hole and a coupling groove formed in the center thereof; and the cooling plate, which is coupled to the upper part of the discharge plate, has an outlet formed in the center thereof, and is made from a metal material, wherein a contamination guard plate is coupled to the coupling groove of the discharge plate so as to block most of the outlet of the cooling plate while leaving only a discharge gap, and thus, when a user uses the cosmetics while pressing the cooling plate with a puff, the contamination guard plate blocks the outlet of the cooling plate, excluding the discharge gap, so as to prevent bacteria or contaminants from entering the outlet from the puff, and the cooling plate, which is

Abstract: An application utensil for transferring a coloring composition in one of many patterns onto skin includes a wheel comprising a pattern of raised and submerged regions on an outer tread surface of the wheel; a wheel well that supports the wheel and allows rotation of the wheel, wherein the wheel is removable from the wheel well; and a manual grip connected to the wheel well. A plurality of different application utensils and wheels are disclosed. Application utensils are interchangeable as are the wheels to allow many combinations according to consumer preference.

Abstract: An apparatus for treating human skin includes an outer housing including a graspable portion, an applicator head and a cartridge connected to the applicator head. The cartridge includes a nozzle located in the applicator head. An image capture device captures images of the human skin through an opening in the applicator head. A processor analyzes the images of the human skin to identify skin deviations. A sealing assembly includes a support portion and a resiliently deformable sealing element supported by the support portion at a location within the applicator head. The sealing assembly has a closed configuration where the sealing element is sealed against the nozzle and an open configuration where the sealing element is removed outward away from the nozzle in a composition delivery direction to expose the nozzle for operation.

Abstract: An apparatus for treating human skin includes an outer housing including a graspable portion and an applicator head engagement structure. The apparatus includes an image capture device that captures images of the human skin through an opening in the applicator head. A processor analyzes the images of the human skin to identify skin deviations. A cartridge includes a nozzle located in the applicator head. The applicator head includes an outer housing engagement structure that engages the applicator head engagement structure with the cartridge inserted into the outer housing to inhibit removal of the cartridge from the outer housing. A cap engages the applicator head. The cap has a locked configuration connected to the applicator head where the applicator head is removable from the outer housing and an unlocked configuration connected to the applicator head where removal of the applicator head from the outer housing is inhibited.

Abstract: The present application relates to a mascara comprising a lower structure for accommodating a mascara liquid, and an upper structure coupled to a mascara liquid accommodation part, wherein a brush rod provided in the upper structure includes an uneven part of which the outside is made of a metallic material, and a distance from an outer surface of the brush rod to the highest point of a plurality of uneven portions of the uneven part is ? or less of the diameter of a cross section of the brush rod.

Abstract: Method of defining at least one treatment area including receiving a first set of data from a digital geometric representation of a target area; receiving a second set of data representing at least a portion of an applicator designed to contact the target area; digitally overlying the second set of data over the first set of data to generate a first digital overlay; digitally defining a treatment area on the first digital overlay surrounding the condition; generating a third set of data representing a portion of the applicator and the treatment area; digitally overlying the third set of data over the first set of data to generate a second digital overlay representing coverage of a condition by the treatment area; and generating a first electronic image that includes a visual depiction of the second digital overlay.

Abstract: A backpack frame assembly for a user during activity is described. The frame includes a substantially flat panel configured to be attached to a back area of a backpack, a vented portion configured to allow air to reach a user's back, and a plurality of spacers positioned on the panel to contact the user's back and create a gap between the user's back and the frame/backpack. Preferably, the backpack frame assembly also includes at least one air diverter attached to the panel to direct air into the gap.

Abstract: A backpack includes a back panel having an airflow system. The airflow system includes protrusions extending from a base of the back panel and defining boundaries of lateral and vertical flow channels. The flow channels are configured to promote active airflow through the back panel.

Abstract: Provided is a backpack frame and a method of assembling the backpack frame capable of being tightly coupled with a backpack, adjusting a position of a shoulder strap of the backpack, and improving the user's convenience and safety by mounting a waist support member capable of being rotated in various directions. The backpack frame used for maintaining a shape of the backpack by being mounted on the backpack includes a frame bag coupling device in which a frame upper coupling portion is formed at the top and a frame lower coupling portion of a strap adjuster is formed at the bottom, the backpack frame including a horizontal bar shape upper frame of that is formed to be fixed with the frame upper coupling portion; a coupling frame that is coupled with the upper frame in a longitudinal direction and formed to be tapered toward the center; and a flat plate shape lower frame that is coupled with the coupling frame and includes a binding hole formed to bind to the frame lower coupling portion at a lower portion.

Abstract: A hydration backpack includes a main body, a storage compartment, a pair of shoulder straps, a bladder, a hydration tube, a first longitudinal elongated metallic element, and a second longitudinal elongated metallic element. The bladder is disposed in the storage compartment of the main body and is configured to retain liquid. The hydration tube includes a proximal end coupled to the bladder and a distal end providing liquid to a user on demand. The first longitudinal elongated metallic element is disposed on one shoulder strap. The second longitudinal elongated metallic element is disposed on the hydration tube. The first and second longitudinal elongated metallic elements are configured to connect by gravitational and magnetic forces and form an automatic hydration tube return system.

Abstract: A firearm holster or knife sheath with an imbedded magnetic holstering locator is disclosed. A strong magnet source is positioned at a preferred insertion point of a firearm holster or knife sheath. To facilitate inserting a firearm or edged weapon in a holster or sheath, a magnet located at the insertion edge opening in each instance allows the user to more safely reholster or re-sheath either a firearm or a knife without a need to break focus on a threat. The magnetic insert attracts the leading edge of the firearm or the knife thereby allowing the user to quickly recognize the correct position to begin insertion of the firearm or the knife into the holster or sheath without the need to observe the arm movement in the process.

Abstract: A 3 dimensional shape retaining light weight pouch and method for making the same, for mounting on a carrier such as a garment such as, but not limited to, a vest, belt, cummerbund, pack, or the like, and more particularly, that utilizes standing portions of stiffened fused together edges of laminated or composite panels of the pouch to hold the pouch in a predetermined 3 dimensional shape. The pouch is durable and wear resistant, allows easy insertion and removal of articles, accessories, and objects to be held and/or carried thereby, and is simple and easy to manufacture, while being configurable to be compatible with some known systems mounting systems such as MOLLE PALS and the like.

Abstract: A mascara brush having a centre made of at least two wire sections twisted together along a longitudinal axis of the wire core, and having a bristle covering made of plastic bristles formed by filaments, each of which bristles is held in a clamping manner between the two wire sections, and which bristles are formed with a wedge-shaped bristle tip or without a wedge-shaped bristle tip on their free ends. At least one portion of the bristles has a bristle coating made of a first softer material, and a bristle core that is joined to the bristle coating and made of a second harder material, and at least these bristles have a transverse cut, in the form of a simple wedge, on one side or on two sides, at least partially on their radially outward free ends, and comprise a wedge-shaped bristle tip having at least one cut surface forming a wedge.

Abstract: A toothbrush, comprises a handle; a head connected to the handle; and a plurality of bristles, respective ones of the plurality of bristles including a first end having a first shape formed by an end-rounding process, a second end having a second shape, and a substantially cylindrical shaft extending between the first end and the second end. The bristles are fastened to the head by a fastener at a fastening point along the shaft, the fastening point being located nearer to the second end than to the first end such that the first end extends from a surface of the head to a first height and the second end extends from the surface of the head to a second height. The first height is greater than the second height.

Abstract: A flexible hinge created by a section of fabric material disposed between upper and lower retention pieces, for creating a hinge from a fabric member.

Abstract: A T-link hinge for hingeably connecting first and second members comprises a link portion having a T-shaped cross-section including a top region and a bottom region, wherein the top region has a width greater than a width of the bottom region. The link portion comprises first and second thru holes formed in the bottom region of the link portion adjacent each the respective first and second ends of the link portion. Each of the first and second members to which the link portion is to be mounted includes thru holes. In an assembled configuration of the link portion and the first and second members, the thru holes formed on the first and second members axially align with the pair of thru holes in the link portion and are connected by first and second pins.

Abstract: A height-adjustable table with tabletop touch control includes a table frame, a motor unit, a tabletop, a controller, a touch button box, and a covering. Through the touch button box connected to the controller in cooperation with the controller to control the motor unit, the motor unit drives the table frame to move up and down to achieve the lifting and lowering of the tabletop. The user can adjust the height of the tabletop by simply manipulating the touch button box. The adjustment is more convenient.

Abstract: A hand-operated worm gear height adjustable table includes a table top, a base mechanism, a lift mechanism, and a driving mechanism. The base mechanism includes a base and tracks on the base. The lift mechanism includes two parallel first lift arms and two parallel second lift arms which cross with each other to form X-shaped structures. The driving mechanism is connected to the upper ends of the first lift arms and includes two U-shaped slide rails and a driving shaft penetrating through the upper ends of the first lift arms. The center of the driving shaft is provided with a worm gear and a worm. The outer end surface of the worm is sleeved with a first sleeve component and a second sleeve component with a cavity provided therebetween, and the outer end surface of the first sleeve component is sleeved with the first torsional spring.

Abstract: A workstation includes a partition unit to form a workspace, in which a desk board, two lifting mechanisms are provided. Each of the lifting mechanisms has a linkage set and a movable member connected to the linkage set. The linkage sets are moved by one or more motor, and the movable member is connected to the desk board. The motor moves the linkage sets so as to lift and lower the desk board.

Abstract: A tray attachment assembly providing a horizontal surface for placement of items thereon. The assembly includes a tray that defines the horizontal surface and a connection mechanism for fixedly clamping the tray to an attachment surface. The tray includes a first planar section extending between a first lateral edge and a second lateral edge that defines the horizontal surface. A second planar section extends from the second lateral edge of the first planar section at a transverse angle from the first planar section for preventing unintended interaction with the connection mechanism. The transition between the first planar section and the second planar section presents a rounded profile.

Abstract: A modular patio furniture assembly and tool-free method of assemblage includes at least one outdoor club chair, at least one patio sofa, and a garden table. The patio furniture includes multiple panels, legs, feet, and cushions that detachably attach through a series of strategically positioned pegs and hooks at their edges. These connecting pegs and hooks detachably mate with corresponding cavities and slots at the edges of the panels and the termini of the legs and feet in a sliding, friction fit locking relationship. The snap, friction-fit connectivity of the connectors can be accomplished by a non-skilled user with no tools. In this manner, the furniture assembly permits rapid assembly, disassembly, and reassembly to put together a variety of furniture configurations. The assemblage of the patio furniture requires no tools to assemble and can be carried out at a location remote from the factory where the patio furniture is manufactured.

Abstract: An article of furniture can be converted for dual uses as a coffee table and an ottoman, or vice versa, with relative ease using a simple conversion mechanism disposed on the article if furniture and operably connected between a number of convertible members and a base for the article of furniture.

Abstract: A refrigerator having a first storage compartment having a first storage space defined therein, a door disposed on the first storage compartment to open and close the first storage space, a drawer-receiving portion defined in the first storage space; a storage drawer configured to be extendable from and retractable into the drawer-receiving portion, and an actuator disposed on a bottom face of the drawer-receiving portion, wherein the actuator is configured to move the storage drawer in an extended direction as the storage drawer is pressed in a retracted direction.

Abstract: A flexibly partitioned drawer comprises a drawer body formed with an accommodating cavity and at least one partitioning member that moves left and right and is disposed in the accommodating cavity for use in partitioning the accommodating cavity. Leading and trailing ends of the dividing member respectively protrude in the direction of front and rear walls of the drawer body to form protruding portions. The front and rear walls of the drawer body are respectively formed thereon with sliding grooves that cooperate with corresponding side protruding portions so as to provide the dividing member with movement along the left and right directions. The sliding grooves penetrate side walls of the drawer body such that the accommodating cavity communicates with an outer part of the drawer body.

Abstract: A joining and levelling system for furniture and furnishing items with a bottom and a shoulder positionable on a floor includes a front body and a rear body each having a connection group and a blocking group, adapted to stably interconnect the bottom and the shoulder, and a levelling group. The connection group, the blocking group and the levelling group can be actuated from the front of the furniture, the front body and the rear body being each positionable in lateral contact with the shoulder and beneath the bottom, actuation points of the connection group, the blocking group and the levelling group of the front and rear bodies being positionable on a horizontal plane parallel to the floor and to the bottom, adjacent to each other. A symmetry axis of the connection group coincides with or is substantially close to a center line of the front and rear bodies.

Abstract: A compact front regulation system for leveling feet of furniture pieces having a bottom and shoulders includes, in combination, at least one front foot and at least one rear foot, the at least one rear foot having a regulation mechanism in height which is accessible from the outside and which can be maneuvered using a regulation tool. The at least one front foot has a pass-through hole for the regulation tool of the rear foot, the pass-through hole acting as a support and a guide for the regulation tool.

Abstract: The present disclosure relates to a flexible cover strip for a storage system including a carrier rail (1) having a U-shaped cross section with first and second parallel rows (3, 5) of elongated substantially identical slots (7) in a front portion to accommodate a suspension element such as e.g. a bracket. The cover strip has an abutment face (17) and an exterior face (31), and a plurality of projections (19), rising from the abutment surface of the strip in first and second parallel rows matching the slots of the carrier rail, such that the cover strip can be fitted on the front portion with the projections entering the slots, and wherein at least some of the projections are provided with a snap element (27) at their distal ends, which snap elements prevent the cover strip from falling off the rail.

Abstract: This base isolation system protects barrel racks from earthquake motions through a pad designed to slide on a prepared surface to critically reduce the amount of energy otherwise transferred to a stack of barrels. The pad is comprised of two layers: a plate, usually steel, and an underlayer, usually a high density plastic. The interaction of the underlayer with the prepared surface depends on a coefficient of static and kinetic friction between the underlayer and the surface that prevents relative movement in normal operation and yet allows the isolation pad to move relative to the surface during a seismic event.

Abstract: A mechanism for actuating a motion furniture is disclosed. The mechanism includes a chassis assembly, a linkage assembly operatively connected to the chassis assembly via a front pivot link and a rear pivot link and further including an ottoman drive link, and a linear actuator having a base and a driving end, the base being connected to the chassis and the driving end being operatively connected to the linkage assembly via the ottoman drive link, wherein the linear actuator is configured to extend to deploy the linkage assembly to an open position by pushing the ottoman drive link forward and to contract to retract the linkable assembly to a closed position by pulling the motor drive tube backward.

Abstract: The present disclosure provides a swingable body carrier for hanging a swingable seat upon a base through swing arms and pushing the swingable seat to move reciprocatingly by a power assembly. Then, a carrying assembly, which is provided for carrying a body, is disposed upon the swingable seat. When a user sits or lies on the swingable body carrier of the present disclosure, it serves like a cradle to automatically swing so as to provide a good and comfortable user experience.

Abstract: A swing chair includes a base, a seat, and a driving frame. The seat is disposed above the base. The driving frame is disposed between the base and the seat. The driving frame includes a first fixing base, a first shaft, a second fixing base, a second shaft, a first driving assembly, and a second driving assembly. The first fixing base is fixed to the base. The first shaft is rotatably connected to the first fixing base. The second fixing base is fixed to the seat. The second shaft is connected to the first shaft and the second fixing base is rotatably connected to the second shaft. The first driving assembly is configured to drive the first shaft to rotate with respect to the first fixing base. The second driving assembly is configured to drive the second fixing base to rotate with respect to the second shaft.