Abstract: A method of digital printing and finishing for fabrics is provided. The method includes a step of unwinding a fabric from a first reel. A step of compensating the speeds and of spreading the fabric for its positioning on a conveyor belt provided with supporting elements on which a digital printing step occurs is provided. A step of drying the fabric is provided. A step of winding the fabric onto a second reel is provided. These steps are being executed at corresponding stations arranged in sequence with respect to each other and the fabric passing through them continuously, transversely to the conveyor belt, there being a plurality of bars provided with printing heads which are controlled electronically and synchronized with the movement of the conveyor belt.

Abstract: Provided is a liquid discharging apparatus that includes a medium support portion which supports a recording medium and a tension applying portion which applies tension to the medium support portion.

Abstract: A method of forming substrate alignment tabs on a print surface of a printer having an ink jet print head that is capable of relief printing, wherein the print head is used for printing the tabs directly onto the print surface.

Abstract: In a printer for printing on a label of a continuous paper in a middle of feeding the continuous paper unwound from a paper sheet supply unit, while a depressed portion is disposed below a damper portion, a width adjustment guiding portion, which contacts an outer edge in a width direction of the continuous paper to guide a feed of the continuous paper, is disposed on a lower portion of the damper portion such that the lower end portion of the width adjustment guiding portion is positioned within the depressed portion.

Abstract: A recording apparatus includes a recording head configured to record on a target recording medium, a shaft member that is extended in a direction intersecting with a transportation direction of the target recording medium and is rotatable with both end portions thereof being supported by bearings, a roller for nipping the target recording medium between the shaft member and the stated roller, and pressing members that are provided at appropriate intervals in the direction intersecting with the transportation direction, press the shaft member between the bearings, and maintain the shaft member to be in a deformed state being arched toward an upstream or downstream side of the transportation direction. At least one of the plurality of pressing members biases the shaft member in a direction resisting a load applied from the roller.

Abstract: Provided herein is a media processing device including a printhead assembly, a frame, and a biasing element. The printhead assembly includes a printhead and a printhead bracket, where the printhead assembly extends in a longitudinal direction between a first end and a second end, and where the printhead bracket includes a biasing force receiving element. The frame may be configured to receive and support the printhead assembly, where the frame includes a first portion disposed adjacent to the first end of the printhead assembly, and a second frame portion is disposed adjacent to the second end of the printhead assembly. The biasing element may extend between the first frame portion and the second frame portion, where the biasing element may engage the biasing force receiving element of the printhead assembly.

Abstract: A printing apparatus includes an encoder that detects the rotation of a driving roller that forms a transport device, an imaging device that images a medium during transport by the transport device, and a controller. In a second detecting unit, the imaging device images the medium irradiated with light that the light emission controller causes the light-emitting unit to emit through a strobe control signal. The second detecting unit acquires movement amount of the medium using a plurality of images with different imaging times at which the medium is imaged. In the first detecting unit, a latching circuit holds a rotation amount of a driving roller totaled by a counter at a timing based on the strobe control signal. The controller controls the discharge timing of the print head based on the rotation amount and the movement amount.

Abstract: Systems, mechanisms, and methods are described that relate to the production of a custom printed insert(s) that can be custom printed prior to insertion of the custom printed insert(s) into an envelope along with a personalized card/carrier combination for mailing to the intended holder of the personalized card. The inserts are custom printed using an insert printer that is located in the inserter mechanism that is used to insert the insert(s) and the card/carrier combination into an envelope for mailing to an end user of the card. The inserter mechanism can have an “off-line” configuration, i.e. configured as a stand-alone mechanism, or configured for “in-line” use, i.e. used together with other mechanisms.

Abstract: A configuration includes a paper sheet supply unit that supplies a continuous paper, a supporting stand that includes a platen roller feeding the continuous paper supplied from the paper sheet supply unit to a front along a paper passing route, a printing unit that includes a bracket to which a thermal head is mounted, prints on the continuous paper in a position opposing to the platen roller, and is disposed openable/closable in a vertical direction with respect to the supporting stand by the swinging bracket, and a support plate that swings in conjunction with opening and closing of the printing unit to displace a lower portion side of the thermal head to a front in an open position of the printing unit.

Abstract: A print head mounting structure includes a beam that extends along a scan axis y of the print head; and a carriage adapted to be driven for reciprocating movement along the beam. The carriage includes a print head carrier for carrying the print head, a cable guide carrier and a link. The print head carrier has a first runner block arranged to guide the print head carrier along the beam. The cable guide carrier is connected to a flexible cable guide that extends along the beam and has a second runner block arranged to guide the cable guide carrier along the beam independently of the print head carrier. The link connects the print head carrier and the cable guide carrier for joint movement along the beam, wherein the link is rigid and play-free in the direction of the scan axis y and is resilient in all remaining degrees of freedom.

Abstract: An apparatus for mitigating noise in a printer can include a plate having a plurality of holes distributed across the plate and extending through the plate. A portion of the plurality of holes can be dimensioned and configured to absorb acoustic noise across a given frequency band and another portion of the plurality of holes can be dimensioned and configured to absorb acoustic noise across another frequency band in a media path of a printer. The apparatus further can include an acoustic baffling material to cover the plate and that can be configured to dampen the acoustic noise across the given frequency band and the other frequency band.

Abstract: A method for detecting a demountable accessory in an image-forming device is disclosed. The image-forming device comprises a controller, a print platen suitable for receiving a substrate, and a handling mechanism. The print platen has an optical sensor associated therewith adapted to capture an image of an item on the print platen. A first image is captured. The handling mechanism carries out an adjustment action suitable for adjusting the position of the substrate on the print platen. A second image is captured. The first and second images are analysed to identify any changes and of the captured images is analysed to detect an accessory identifier. The presence of an item on the platen is determined from the analysis.

Abstract: An image forming apparatus includes a image forming unit that forms an image on a recording medium P, a second storage unit that stores the history information about the maintenance of the image forming unit, and a control unit that, when the history information stored in the second storage unit is updated, sets a test image formation cycle of forming a test image used to adjust the image forming unit in accordance with the updated history information.

Abstract: A self-inking stamp is configured such that, in a marking preparation state, a marking member is maintained in a state in which it is oriented upwardly within a stamp body of the self-inking stamp and pressed against an ink pad to supply ink thereto, and, during a marking operation, after the inner frame is moved downwardly while being reversingly rotated and oriented downwardly, the downwardly-oriented marking member is exposed from the stamp body and enabled to make a mark. The self-inking stamp is also configured to lock the marking member in a state in which it is exposed from the stamp body, for replacement and cleaning of the marking member.

Abstract: A device for printing a succession of sheets, includes a platen press for depositing colored or metalized film on each sheet by stamping between a stationary platen and a movable platen. A heating element brings a stamping tool integral with the stationary platen to a given temperature for a stamping operation. The heating element is displaced between an operating position, which is between the stationary platen and each stamping tool associated with that platen, and a maintenance position in which the heating element is outside the platen press.

Abstract: A decal printing paper for ceramic, glass or inorganic surfaces has a base paper coated with a water-soluble release layer, an image transfer layer made of liquid cover coat with glass/ceramic flux added, and a printed image layer. The glass/ceramic flux contains glass frit with a relatively low melting point to provide a one-step printing paper with a glass/ceramic flux that delivers the required adhesion, as well as reducing the firing temperature. Optionally, additional layers (e.g., a pigment layer) can be included for use on clear glass or other substrates of various colors. The image transfer layer can also include a dye colorant to provide a visual indication of a functional characteristic of the decal printing paper.

Abstract: A selected number of pages are arranged in book-like fashion and bound together so that the book may be displayed with one hand under the back cover held by the instructor, storyteller or reader. The other hand is free to turn the pages and make reference to objects within the illustrations facing the audience. The back cover may be approximately horizontal to the floor. The pages facing the audience may be approximately perpendicular to the floor. The first story page facing the audience carries an illustration depicting a portion of the story, while the second story page facing the reader carries a mirror image of the illustration seen on the first story page along with the text that relates a portion of the story and both first and second story pages are in diametric contraposition to each other on separate and sequential pages bound with a horizontal spiral binding within the book.

Abstract: Moiré-type magnification systems are disclosed. The moiré magnification systems can comprise a surface and a periodic array of image relief microstructures having a periodic surface curvature disposed on or within the surface. The image relief microstructures can have a first image repeat period along a first image reference axis within the array, and the periodic surface curvature can have a first curvature repeat period along a first curvature reference axis within the array. Transmission of light through the array, reflection of light from the array, or a combination thereof forms a magnified moiré image.

Abstract: Optically variable security threads or stripes to be incorporated into or onto security documents, relate to the field of the protection of value documents and value commercial goods against counterfeit and illegal reproduction. The security threads or stripes comprise a) an optically variable layer; b) a color constant layer having a color matching the color impression of the optically variable layer at a viewing angle; c) a holographic metallic layer; and d) and a transparent substrate, wherein the optically variable layer, the color constant layer and the holographic metallic layer are at least partially jointly visible from at least one side of the security thread or stripe.

Abstract: Present invention discloses loaded silk fibroin fibers as security features. Particularly, it provides security fiber comprising silk fibroin loaded with fluorescent chromophore or IR absorbing chromophore useful to combat counterfeiting. The invention discloses paper composition containing loaded silk fibroin fibers, provides method for authentication of paper embedded with security features.

Abstract: Aspects of the present disclosure relate to a security device, in particular, a multilayered security device. The multilayered security device includes a substrate layer having a first substrate. The substrate layer attaches to the product. The multilayered security device also includes a graphene layer. The graphene layer has a first continuous graphene sheet that is made of a monolayer of covalently-bonded carbon atoms. The graphene layer also forms, in response to exposure to a verification stimulus, a contrasting pattern with respect to an exposed substrate area from the substrate layer.

Abstract: The least appealing aspect of your typical office/school-used wooden pencil is when you, the user, have used so much of the available eraser on top of the pencil that it can no longer be used. It is now perfectly flush with the top of the metal eraser casing. Now, you can no longer use this eraser even though there may be much more pencil available to be used. What the Perforated Pencil Eraser Cap (PPEC) does is allow you, the user, to tear/peel away the top portion of the metal eraser casing so as to expose more of the eraser found inside of the metal casing. This allows the user of the PPEC and the pencil to use more of their pencil and use their pencil for a longer period of time.

Abstract: A vehicle wheel comprising a wheel rim with a rim base made from fiber composite material and a wheel disc. The wheel disc is connected to the wheel rim by a connecting element which is guided through a passage of the rim base and is received in the wheel disc. The wheel rim comprises a connecting arrangement with at least one connecting element and a seal element which covers in a complete and hollow manner a part of one or more adjacent connecting arrangements that extends across the rim outer side of the rim base. A circumferential edge of the seal element is glued in air-tight manner to the rim well. Alternatively, the wheel rim comprises a connecting arrangement with a connecting element and a flexible sealing layer made from plastic and completely covers, by coating, a part of the connecting arrangement which extends over the rim outer side of the rim base. An edge region of the flexible seal layer is connected in an air-tight manner to the rim base.

Abstract: A device to increase the grip of the tread (11) of the wheel (10) of a vehicle comprising a base (2) provided with appropriate means for securing it to the rim of said wheel (10), in correspondence with the face thereof destined to be arranged outside, and a plurality of moving spokes (4) whose ends are connected to claws (55), the latter being elastically connected to each other to form a belt (5) whose diameter progressively increases during its positioning; said moving spokes (4) being suitable for making, upon command, said belt (5) switch from a retracted rest configuration having the shape of an annulus, in which said claws (55) are substantially arranged inside the perimeter represented by said base (2), to an extracted work configuration, so as to make its extension progressively increase up to allowing its arrangement around said tread (11), said claws (55) getting in contact with the roadbed; characterized in that the means for positioning said moving spokes (4) comprise a plate grooved according to

Abstract: A rotating elliptical shaped wheel in which the height of the frame axis to the ground does not vary during each rotation cycle, thereby maintaining a constant height linear movement; comprising a crankshaft or eccentric where the length of the crankshaft arm or the distance between the two centers of the diameters of the eccentric shaft, are equal to ¼ of the difference between the largest and smallest diameter of the ellipse; a crown gear fixed to the elliptical shaped wheel; a reel fixed to the structure, a circular drum, whose axis coincides with the axis of the elliptical shaped wheel and co-rotational with the elliptical shaped wheel and the crown gear and a reel coupled to the eccentric or crankshaft.

Abstract: The present disclosure may relate to a wheel that may include first and second exoskeleton plates. The wheel may also include first and second roller guide assemblies that each include one or more bearings, a roller guide coupled with the one or more bearings, and a shaft spanning the first and second exoskeleton plates and coupled with the roller guide such that the roller guide rotates around the shaft. The wheel may also include a tire and a centerless rim coupled with the tire. The centerless rim may be configured to have a shape that corresponds to a shape of the roller guide, and the roller guide may be configured to contact the centerless rim as the centerless rim rotates. The wheel may also include a first limiter to maintain contact between the centerless rim and the roller guide, and a second limiter.

Abstract: A wheel or tire lifter according to the present invention comprises a base, consisting of a base frame and a vertical strut, said base frame being provided with a rolling wheel for the base movement, a drive lift means arranged in said vertical strut; a driving means to drive said drive lift means, and a wheel or tire bracket connected with said drive lift means, on which the tire to be installed is directly placed. According to the wheel or tire lifter provided by the present invention, the tire to be installed can be put or placed on the wheel or tire bracket directly, so said wheel or tire bracket is driven by the said drive lift means and moved upward and downward to a desired height or position, and the tire can easily be moved to the wheel installation position of a car.

Abstract: An apparatus to dispense salt, sand, brine or similar material under or in the area of a tire on a motor vehicle, including, but not limited to, a truck or automobile. The apparatus comprises one or more containers for storing salt, sand, brine, or similar material that can be used to melt or provide traction on snow or ice. One or more tubes or lines run from the container(s) to a position above or near a vehicle wheel, or in the wheelwell, where the salt, sand, brine or similar material can be dispensed via a dispenser directly onto the snow or ice under or proximate to the tire, or onto the tire itself. A pump is used to pump the salt, sand, brine or similar material through the lines. The pump may be integrated with the container, or may be separately installed.

Abstract: A tire, wherein, in a cross section in the tire width direction thereof in a state where the tire has substantially not been inflated with no load applied thereon, provided that the maximum height in the tire radial direction of the carcass is h, a radius of curvature of the carcass within a height range 0.91 h-h measured from the radially innermost position of the carcass is R7, an acute inclination angle specifically defined in the height range 0.91 h-h is ?7, the intermediate value of a radius of curvature in the height range 0.82 h-0.91 h is R6, a radius of curvature in the height range 0.63 h-0.82 h is R5, and an acute inclination angle specifically defined in the height range 0.63 h-0.82 h is ?5, R7?0.26h, ?7?14°, R6<R7, R5>R6, and ?5?23°.

Abstract: The tire (10) comprises at least one set (45) of at least two layers of at least one knit (441, 442), the two layers being at least partially superposed on one another. The knit (441, 442) comprises: columns of loops arranged one after the other substantially in an overall direction (X1) referred to as the main direction, rows of loops arranged one beside the other substantially in an overall direction (Z1) referred to as the transverse direction. The knit (441, 442) has a force at 100% elongation less than or equal to 40 N·row?1 and/or 40 N·column?1, the force at 100% elongation being determined from a force-elongation curve obtained by applying standard ISO 13934-1:2013 to the or each knit (441, 442) embedded in the standard elastomer matrix and the number of rows and/or columns being measured in accordance with standard NF EN 14971.

Abstract: A tire includes annular beads, a body ply extending between the annular beads, and a circumferential belt disposed radially outward of the body ply. The tire further includes a circumferential tread disposed radially outward of the circumferential belt. At least three circumferential grooves divide the tread into two outer circumferential ribs and two inner circumferential ribs. A plurality of rib sipes are disposed on at least one circumferential rib. The tire includes a plurality of curvilinear spline sipes, wherein each curvilinear spline sipe has multiple inflection points. At least one curvilinear spline sipe is disposed on an outer circumferential rib and at least one curvilinear spline sipe is disposed on a different circumferential rib. A localized depth of the at least one curvilinear spline sipe disposed on the outer circumferential rib varies in proportion to the distance from the rib sipes that intersect the at least one curvilinear spline sipe.

Abstract: A run-flat tire includes a carcass, a tire side portion and a side reinforcement layer. The carcass bridges between a pair of bead portions. The tire side portion links between a bead portion and a tread portion. A carcass maximum width position of the tire side portion, at which the width of the carcass is at a maximum, is provided at the tire radial direction outer side relative to a position that is at 40% of the tire section height. The side reinforcement layer is provided at the tire width direction inner side of the carcass. A thickness of the side reinforcement layer at the position that is at 40% of the tire section height is not more than 65% of a thickness of the side reinforcement layer at the carcass maximum width position.

Abstract: A method for the configuration of a tyre pressure sensor for a vehicle, including the following steps: production of a data communication connection between a mobile radio device and a tyre pressure sensor, selection of at least one specific sensor parameter for the vehicle via a mobile radio device, and activation of the at least one selected sensor parameter and the tyre pressure sensor.

Abstract: A self-regulating tire valve for use in pneumatic tires. The self-regulating tire valve includes a tubular housing with a primary channel extending therethrough, a threaded collar on one end of the tubular housing adapted to connect to a source of pressurized air, a cavity positioned adjacent to the primary channel, and a release passageway connecting to a release outlet positioned on the exterior of the tubular housing. A diverting block is positioned with a secondary channel extending therethrough that is moveably positioned within the cavity. When the secondary channel of the diverting block is aligned with the release passageway, air can flow from a second end to a first end of the secondary channel, through the release passageway and exit at the release outlet.

Abstract: A suspended axle for a tractor, the axle having a lower link mechanism selectively operable between a first configuration in which the lower links are in fixed relation to the suspended axle and a second configuration in which the lower links are isolated from the suspended axle.

Abstract: A method and a device for controlling the damping force of adjustable dampers in motor vehicles, particularly in commercial vehicles. The control of the damping force of adjustable dampers is effected in dependence on at least one parameter from which a chassis requirement and/or a road condition can be derived and which is provided by an off-board data source and the current values of which are received by the motor vehicle in driving mode.

Abstract: A coupled torsion beam axle for vehicles may include a torsion beam disposed in a vehicle width direction and trailing arms disposed at both ends of the torsion beam in a length direction of a vehicle body, wherein the torsion beam has an opened cross section formed in a reverse “U” shape by press-forming one sheet member machined so that lengths of right and left sides are different from each other on the basis of a center, and cross section widths which are different from each other along vehicle width directions of both sides on the basis of the center between the trailing arms of both sides, and front and rear surfaces formed in a wave shape along the vehicle width directions of both sides on the basis of the center.

Abstract: A vehicle having an integrated function of assisting an engine and compressing a refrigerant includes a motor unit and a compression unit coupled within a housing, and a first clutch unit coupled to a rotation shaft of the motor unit or a rotation shaft of the compression unit and that connects or releases a driving force of an engine and a driving force of the motor unit.

Abstract: A temperature control device for a battery and for a vehicle interior, having a first heat exchanger and having a second heat exchanger that are thermally coupled, the second heat exchanger being thermally coupled to the battery, and the first heat exchanger to a temperature control chamber that has a downstream segment that is thermally coupled to the vehicle interior and has a first upstream segment and a second upstream segment, the first upstream segment being thermally coupled to the vehicle interior and the second upstream segment to a surrounding environment of the vehicle, the first heat exchanger being capable of being thermally coupled alternately to the first upstream segment or to the second upstream segment.

Abstract: An HVAC module having a reconfigurable bi-level duct system is disclosed. The air duct includes an air duct inlet in fluid communication with the HVAC module, an interior wall dividing the air duct into first and second air passageways, a bypass port enabling fluid communication between the first air and second air passageways. A downstream control valve disposed adjacent the bypass port and is configured to selectively direct air flow from one of the first and second air passageways to the other of the first and second air passageways. An upstream flow control valve is disposed adjacent to the inlet of the air duct, wherein the upstream flow control valve is configured to selectively direct air flow from the hot and cold chambers of the HVAC module to the first and second air passageways of the air duct.

Abstract: A fuel economy system for a vehicle. The vehicle has a power supply, an HVAC system that is operable to heat and/or cool an interior compartment of the vehicle, and a destination system that is operable to estimate a length of time or distance required for the vehicle to arrive at a destination on a predefined route. The system also includes an HVAC control system in communication with the HVAC system. The HVAC control system is operable to regulate a temperature of the vehicle interior compartment by increasing or decreasing power to the HVAC system such that the interior compartment is heated or cooled. The HVAC control system is also operable to automatically reduce power to the HVAC system per a predefined reduced power plan prior to the vehicle reaching the destination.

Abstract: A heat management system for an internal combustion engine has an engine cooling circuit, a main cooling circuit that has a main cooler, a heating circuit that has a heating heat exchanger, a coolant pump that moves coolant through the circuits and a rotary slide valve that has at least one switched and at least one non-switched inlet, such that the heating return flow leads into a switchable inlet of the rotary slide valve.

Abstract: A circuit comprises a mechanical relay and a solid-state relay. The mechanical relay is configured to switch a first supply current of the first heating element on a first supply line. The solid-state relay is configured to switch a second supply current of a second heating element on a second supply line.

Abstract: In an interior air conditioning unit, a divided case is provided with a main water receiver, a main drain port, a side wall, a secondary drain port, a partition wall, a notch, a droplet reservoir, a path, and a tilted portion. The side wall, the secondary drain port, the notch, the droplet reservoir, the path, and the tilted portion are respectively located such that a condensate water flows out of the main water receiver and reaches the secondary drain port through the notch before a water surface of the condensate water reaches a fitting portion between the divided cases. According to the above-described configuration, the condensate water produced in the cooling heat exchanger can be certainly prevented from leaking through the fitting portion of the air conditioning case.

Abstract: An air conditioning system for motor vehicles includes an air conditioner case having a drainage port, an evaporator installed within the air conditioner case, a drainage hose configured to discharge condensate water generated in the evaporator to the outside of a vehicle room, the drainage hose connected to the drainage port and drawn out to the outside of the vehicle room through a dashboard, and a connector means configured to rotatably connect the drainage hose to the drainage port of the air conditioner case so as to permit rotation of the drainage hose with respect to the drainage port when the drainage hose is twisted in an assembling process of the drainage hose.

Abstract: An air freshener is configured to be carried by a power outlet of an automobile. The air freshener includes a scent capsule disposed in a housing. A heat source is disposed in the housing adjacent and opposing a permeable membrane of the scent capsule. The heat source is configured to heat the fragrant material in the scent capsule and accelerate permeation of the fragrant material through the permeable membrane of the sent capsule. A hatch is pivotally coupled to the housing and substantially contained within a hatch cavity with an outer surface that is substantially flush with an exterior of the housing in a closed position, The hatch can include a capsule cavity therein. carrying the scent capsule, and facing an interior of the housing in the closed position.

Abstract: The present invention relates to a photocatalyst device including: a body; a light source part fixed to the body to irradiate ultraviolet light and having an LED and a substrate for fixing the LED thereto; a catalyst part fixed to the body to conduct photocatalytic reaction with the light irradiated by the light source part and thus to generate superoxygen radicals; and a heat radiating part disposed on the light source part to radiate the heat generated from the light source part, whereby the photocatalyst device purifies air and sterilizes and deodorizes the evaporator, while being easily mountable as a single module.

Abstract: Shading device including a shading structure displaceable between a lowered rest position and a deployed shading position in lateral guiding rails fixed to the vehicle. The shading structure is lowered through a passage into an accommodation chamber, wherein the passage is closed by a pivotably mounted lid. A control mechanism transfers the lid, in response to movement of a drive transmission, into an opened position. The control mechanism includes a control slider movably mounted transverse to the direction of displacement of the shading structure and in operative mechanical connection to the lid. The control mechanism includes a deflection device coupling the control slider, upon a movement of the drive transmission, to the drive transmission such that the control slider, upon movement of the drive transmission from the rest position of the shading structure in the direction of the shading position, transfers the closing lid to the opened position.

Abstract: Provided is a rearwardly-pivoting door having a pivoting arc in the longitudinal direction of a vehicle. The door may be pivotally coupled with the vehicle by a hinge assembly at a rear portion of the door and a front portion is slidably engaged in a channel receiver when the door is in a closed position. The hinge assembly and channel receiver resist lateral movement of the door to maintain an occupant within a seating area of the vehicle. One or more securing devices may be utilized to maintain the door in an opened or closed position. The securing device may be mechanical and/or magnetic.

Abstract: Disclosed are a middle insert (1) for mounting a light decoration strip (2) on a seal (3) of automobile glass, and a glass window containing the middle insert (1), the light decoration strip (2) and the seal (3), wherein the middle insert (1) comprises a first end part (11), a second end part (12), and a connecting part (13) used for connecting the first end part (11) and the second end part (12). The first end part (11) is provided with a first opening (14), the second end part (12) is provided with a second opening (15), and the first opening (14) and the second opening (15) respectively face the outsides of the end parts thereof. The middle insert (1) is simple in structure such that both complexity and labor costs are reduced.