Abstract: The present disclosure may provide a connector, an electronic apparatus, a wearable apparatus and an assembly method. The connector may include: a main body and a mating member connected to the main body. An inclined face may be provided on one end of the mating member away from the main body, and a recess may be defined between the inclined face and the main body. The mating member may be configured to be inserted into a mating site of the electronic apparatus; the inclined face may be configured to push an engaging member of the electronic apparatus to move on the inclined face while the mating member is being inserted into the mating site; when the mating member is inserted into the mating site and arrives at a predefined location, the engaging member may be restored and accommodated in the recess to engage with the connector.

Abstract: The present disclosure provides a brushhead for an power toothbrush detachably attached to a handle of the power toothbrush, the handle including a vibrating drive shaft, the brushhead comprising: a main body defining a receiving cavity which is configured to receive at least a portion of the vibrating driving shaft, the main body including a cavity wall substantially surrounding the receiving cavity and an end connected to the handle, with an opening which is defined in the end of the main body in air communication with the receiving cavity, so that the vibrating driving shaft is capable of being inserted into the receiving cavity through the opening; and an engaging assembly mounted in a side wall of the main body, the engaging assembly comprising an elastic member, which is made by metal material; wherein, a recess is defined in the outer surface of the side wall, the elastic member is deformably received in the recess, the elastic member is elastically deformed by force provided from the vibrating drive s

Abstract: A liquid leak detection sensor has a sensitivity adjustable function, which adjusts a time to sense, that is, the sensitivity of a sensor regardless of whether the viscosity of a leaked liquid is high or low since a sensing position of the sensor can be adjusted according to the viscosity of the leaked liquid and the tilt of an installation place. The sensor includes a fixing connection fixture having a fixing plate with a fixing hole and a connection part formed with an angle adjustment protrusion, which are integrally provided; an insertion connection fixture into which the angle adjustment protrusion of the fixing connection fixture is inserted; a housing coupled to the insertion connection fixture and a substrate inserted into the housing and having a light-receiving unit for receiving light and a light-emitting unit for emitting light; and a lens part installed in the housing.

Abstract: The present disclosure provides a socket tool which is used to be connected to a driving head of a tool, and the socket tool is especially suitable for a driving head which is equipped with a friction ring. The socket tool includes a connecting portion and a working portion. The connecting portion which is located on one side of the socket tool includes a top surface and a polygonal hole. The top surface is recessed along an axis of the socket tool to form an indentation which can accommodate the friction ring of the driving head. The polygonal hole which can accommodate the driving head penetrates the indentation along the axis of the socket tool. The working portion which is located on the other side of the socket tool has, for example, a hexagonal hole that can be used to cover a bolt or a nut. The indentation can accommodate the friction ring of the driving head, so that an abutting surface of the driving head can contact the top surface of the socket tool directly.

Abstract: Rattling of a shift body in a second direction is suppressed when movement of the shift body toward one side in the second direction is restricted. In a shift lever device, a projecting portion of a hook of a lever projects toward the left from the lever. When disposing the lever on an R position side from an N position, a leading end face of the projecting portion is restricted from pivoting toward the left side by a right face of a rear restricting portion of a left plate, such that a pivot operation of the lever toward the right side is restricted. Flexing of the hook can thereby be suppressed, enabling rattling of the lever in a left-right direction to be suppressed.

Abstract: A wafer support device includes a susceptor, at least one lift pin, at least one lift pin support base and at least one pad. The susceptor has a bottom surface and a top surface configured to support a wafer. The susceptor has at least one through hole extending between the bottom surface and the top surface. The lift pin is at least partially telescopically received in the through hole of the susceptor. The lift pin support base has at least one coupling feature thereon. The pad is detachably coupled with the coupling feature and supports the lift pin.

Abstract: A retaining ring anti-migration system and method. A retaining ring anti-migration system for a centrifugal pump shaft includes a pair of trap sleeves that enclose a pair of retaining rings, one retaining ring around each end of the shaft enclosed by one trap sleeve, the pair of retaining rings configured to bound axial migration of the shaft both upwards and downwards. A retaining ring anti-migration system includes a retaining ring seated in a shaft groove extending circumferentially around an electric submersible pump (ESP) shaft, a trap sleeve extending around the ESP shaft adjacent to the retaining ring, the trap sleeve including a sleeve body secured to the ESP shaft such that the trap sleeve rotates with the ESP shaft, and a jacket extending axially from the sleeve body over an outer diameter of the retaining ring with a clearance between the shaft and the jacket.

Abstract: A fishing reel cap for mounting on a reel body of a fishing reel includes a bottomed cylindrical cap body and an annular reinforcing member. The bottomed cylindrical cap body has a cylindrical portion with threads capable of being screwed onto threads on the reel body and projections extending radially outward on an outside surface of the cylindrical portion. The annular reinforcing member has recesses, a portion of each projection of the projections being configured to fit into a respective recess of the recesses, and the annular reinforcing member being configured to fit on the outside surface of the cap body, exposing at least a portion of each of the projections in a radially outward direction.

Abstract: An actuator, having an electric motor, a reduction gear, a clutch, and a manual mechanical clutch release system, comprising a clutch spring, a plunger, a spring retainer plate, and a securing element, which is arranged in a groove of the plunger. The object of the invention is to ensure, for a common actuator, that there is always a reliable mechanical connection of the mechanical clutch release system, even under rough environmental conditions, wherein no additional parts are required, to the extent possible, and an economical production and assembly is possible.

Abstract: A fluid regulator includes a balance port regulator valve and an actuator coupled to the regulator valve. The regulator valve has an inlet, an outlet, a valve port disposed between the inlet and the outlet, and a valve disc movable along a longitudinal axis between a closed position in which the valve disc sealingly engages the valve port and an open position in which the valve disc is spaced apart from the valve port. The actuator is responsive to fluid pressure to move an actuator stem along the longitudinal axis. A connector assembly operably and removably connects the valve disc to the actuator stem.

Abstract: An example wire ring is configured as a partial polygon. The partial polygon has a plurality of curved sections interposed between a plurality of straight sections. The wire ring is configured to contact a base of an annular groove of an external component of a valve at multiple contact points. The wire ring is also configured to contact a respective base of a respective annular groove of an internal component of the valve disposed, at least partially, within the external component at multiple respective contact points.

Abstract: An assembly for a torque-transmitting connection in an inner pipe string of a dual-member drill string is formed from a collar, a retaining ring, and an inner pipe member. An endless internal groove having adjacent shallow and deep sections is formed in the collar. Formed in the inner pipe member, an external grooved region is situated in adjacent relationship with the internal groove. The retaining ring, situated within the grooves, resists disconnection of the collar from the inner pipe member. When the assembly is subjected to an axial force that might otherwise tend to pull it apart, the retaining ring resists the tendency by wedging between the bottom of the shallow section of the internal groove and the crest of the external groove.

Abstract: An assembly for a torque-transmitting connection in an inner pipe string of a dual-member drill string is formed from a collar, a retaining ring, and an inner pipe member. An endless internal groove having adjacent shallow and deep sections is formed in the collar. Formed in the inner pipe member, an endless external groove is situated in concentric relationship with the internal groove. The retaining ring, situated within the grooves, resists disconnection of the collar from the inner pipe member. When the assembly is subjected to an axial force that might otherwise tend to pull it apart, the retaining ring resists the tendency by wedging between the bottom of the shallow section of the internal groove and the crest of the external groove.

Abstract: A fuel pump includes a body portion housing a fuel pump assembly configured to receive a rotational input and generate fuel flows, a drive shaft extending into the body portion with a pump gear coupled to the drive shaft, and a pilot portion annularly disposed about the drive shaft adjacent to the body portion. A fuel pump adapter is removably and annularly disposed about the pilot portion and configured to engage a gear housing within a fuel pump aperture.

Abstract: A propeller shaft includes a shaft section connected between an input shaft and an output shaft via respective constant velocity joints, wherein the input shaft is connected to a drive source of a vehicle, and the output shaft is connected to driving wheels. The constant velocity joint includes a circlip-restricting surface to engage with a circlip provided in an outer peripheral surface of the input or output shaft, for restricting movement of the first or second shaft in an axial direction. The circlip-restricting surface is implemented by a first inclined surface and a second inclined surface, wherein the second inclined surface is closer to a rotational axis of the shaft section, and wherein the first inclined surface has an acute angle with respect to the axial direction, and the second inclined surface has a smaller angle with respect to the axial direction.

Abstract: A method and apparatus (“utility”) for securing an electrical connection formed by a mating structure including prongs of a male assembly and receptacles of a female assembly are provided. The utility includes a clamping mechanism whereby the very forces that would otherwise tend to pull the connection apart serve to actuate the clamping mechanism, thereby securing the mated pair. The apparatus may be integrated into a standard receptacle, or retrofitted to work with existing devices. In one embodiment, the clamping mechanism acts solely on the ground prong of a standard plug assembly, so that it is unnecessary to consider electrical potentials applied to the clamped prong in relation to the design of the clamping mechanism. Further, the withdrawing movement of the prongs of a plug may cause elongate clamping surfaces of the clamping mechanism to frictionally engage opposing surfaces of the clamped prong.

Abstract: The present application discloses an electrical connector housing assembly and an electrical connector. The electrical connector housing assembly comprises a housing provided with several plug-fitting holes for arranging plug-fitted terminals; and a rear-end cap detachably mounted at a rear end of the housing and covering part of the plug-fitting holes. The electrical connector comprises an electrical connector housing assembly and a plurality of inserted plug-fitted terminals.

Abstract: A tolerance ring is interposed between an output side rotary shaft and a rotor shaft. For this reason, even in a case where a backlash formed in a spline fitting portion between the output side rotary shaft and the rotor shaft is not eliminated, the rotary shafts of both of the output side rotary shaft and the rotor shaft are held by the tolerance ring without a backlash, and rattling noise can be suppressed. An oil supply groove for supplying a lubricant between an annular portion of the tolerance ring and the output side rotary shaft is provided inside an annular groove formed in the output side rotary shaft. With this, it is possible to suppress degradation of the durability of the tolerance ring without performing special processing on the tolerance ring.

Abstract: In order to manage with a smaller number of retransmissions of a data packet during attempts to reconstruct a data packet that has been incorrectly received in a wireless sensor network, it is proposed to implement in the receiving unit (2) a first method and a second method for reconstructing the incorrectly received data packet (DP), in a first step to apply the first method for reconstructing the incorrectly received data packet (DP) and to check for whether the data packet (DP) has thus been reconstructed, and in a subsequent second step to apply the second method for reconstructing the incorrectly received data packet (DP) if the incorrectly received data packet (DP) has not been reconstructed with the first method, and to check for whether the data packet (DP) has thus been reconstructed.

Abstract: A shift device includes a housing and a shift lever having a cylindrical shaft portion with a proximal end pivotably supported inside the housing, shaft portion elongated holes extending through a shaft portion peripheral wall and elongated in a shaft portion longitudinal direction, a shift knob fixed to a shaft portion distal end, a detent pin inserted through the elongated holes where both ends of the pin protrude from the elongated holes, and a detent rod inserted in the shaft portion, the rod transmitting operating force of an operating button in the knob to the pin. The pin has a fitting protrusion protruded toward the rod. The rod has a fitting hole at its end. The protrusion is fitted in the fitting hole. A retaining pawl engaged with an engaging recess provided in the pin or engaged with one of the elongated holes is provided at the rod end.

Abstract: A handle device for a vehicle is provided with: an operating section rotatably connected to a handle base; a cable device formed by inserting in a slidable manner an inner cable, which has a connection section provided at the front end thereof, into an outer cable, the cable device being configured in such a manner that the connection section of the inner cable is fitted to a cable connection hole, which is formed in the operating section, to enable operating force applied to the operating section to be transmitted to a door lock device on the vehicle side; and a connection aid connected to the front end of the outer cable and mounted on the handle base while holding the connection section of the inner cable in a movable manner.

Abstract: A tether fastening device for an automobile body structure includes a fastener clip, at least one tether strap, a tether clip bracket, a clip strap coupler, and a bracket strap coupler. The clip strap coupler operably couples to a slot in the automobile chassis. The tether clip bracket attaches to the fastener clip when in an attached position. The bracket strap coupler is attached to the body panel. The tether strap allows for controlled detachment between the clip strap coupler and the bracket strap coupler. The strap may include a mesh to absorb the deployment energy and decelerate the body panel in a controlled manner. In the event of an airbag activation, the tether clip bracket and the fastener clip initially accelerate and then decelerate from each other. The pair of tether straps control the deceleration and separation distance of the clip strap coupler and bracket strap coupler.

Abstract: A holder for a medical instrument having a quick coupling for receiving a connection end of the instrument's shaft. The quick coupling has a first coupling element having a first axial through-hole for the connection end and a second coupling element having a second axial through-hole for the connection end. The second coupling element is movable relative to the first coupling element in a direction crosswise to the axial direction of the through-holes from a locked position, in which the through-holes are offset so that an edge of the second through-hole engages behind an undercut on the shaft's connection end in a locking manner, to a release position, in which the through-holes lie in alignment and the connection end is freely guidable through both through-holes. A spring bridge connects the first and second coupling elements together and preloads the first and second coupling elements into the locked position.

Abstract: A trim panel mounting system is provided for securing a trim panel to a substrate. That trim panel mounting system includes a push pin, a push pin holder and a trim panel. That trim panel includes at least one mounting post engaging the push pin holder and a resilient retention finger capturing the push pin between the trim panel and the push pin holder.

Abstract: An axisymmetrical portion for an aircraft turbojet engine intermediate case intended to protrude downstream from an outer axisymmetrical portion of the intermediate case is provided. The axisymmetrical portion includes an annular groove radially open outwards, and at least one insert laid out inside the groove, which covers each internal face of the groove and which is radially open outwards.

Abstract: A spring latching connector includes a housing having a bore therethrough, a piston slidably received in said bore, a circular groove formed in one of said bore and piston and a circular coil spring disposed in said groove for latching said piston and housing together. The groove is sized and shaped for controlling, in combination with a spring configuration, disconnect and connect forces of the spring latching connection.

Abstract: A method of assembling a tolerance ring between opposing surfaces of an inner and outer component arranged to mate with one another to provide an interference fit therebetween includes mounting the tolerance ring on one of the inner and outer components whereby the projections are received in a recessed portion on that component, partially mating the inner and outer components, and completing mating by causing relative movement between the tolerance ring and the recessed portion to move the projections from the recessed portion and to be compressed between the mated inner and outer components. The tolerance ring includes an annular band of resilient material for engaging an opposing surface of one of the inner and outer components. The annular band has a plurality of deformable projections extending radially therefrom to engage the opposing surface of the other one of the inner and outer components.

Abstract: A lock assembly to lock two members together, typically an excavator wear member, such as a tooth, on to an adaptor. The lock assembly has a locking pin with a flange portion and a retaining assembly that receives the locking pin. The retaining assembly includes a locking member, in the form of a locking ring, which deforms radially when a tapered portion of the locking pin is inserted into the retaining assembly. In the locked position, the locking ring engages with the flange portion of the locking pin to prevent withdrawal of the locking pin from the retaining assembly.

Abstract: A combination cooling and heating device is provided with a cooling fan including an outlet including a mouth; and a heater including a mouth member complimentarily connected to the mouth of the outlet of the cooling fan, an indicator, a shell member including heating elements, a blade assembly, a micro switch, a spring biased trigger member, a front louver, and a frame secured to both the louver and the shell member. The trigger member is attached to the micro switch. The blade assembly is rotatably secured to the trigger member. In a heating operation, the fan activates to produce airflow which rotates the blade assembly, the blade assembly rotates to pull the trigger member, and the trigger member turns on the micro switch which activates the heating elements, thereby taking heat generated by the heating elements out of the louver.

Abstract: An automotive selective catalytic reduction (SCR) system assembly includes a holder for receiving an SCR system sensor. The holder has a tube, a chamber, and a retainer. The tube receives incoming fluid from a first SCR line and leads exiting fluid to a second SCR line. A passage is located in the tube. The chamber has a interior for receiving the SCR system sensor, and has an opening. The retainer has a portion moveable in and out of the chamber's opening for holding and releasing the SCR system sensor in the chamber's interior.

Abstract: The invention is a rotational mount for use in displaying hand-held consumer electronics in a retail environment. The rotational mount allows the hand-held to freely pivot in rotation on the display. The mount may automatically return to an initial orientation.

Abstract: A post that is configured to be coupled to a head of a bone fixation element that is attached to a bone part can include a post body that is elongate along a first direction and defines a proximal end and a distal end that is spaced from the proximal end along the first direction. The post body can include an internal surface that defines a socket at the distal end. The socket can be configured to receive the head of the bone fixation element. The post can further include a locking member that is disposed within the socket such that when the socket receives the head of the bone fixation element the locking member couples the post body to the bone fixation element. The post body is polyaxially pivotable relative to the head when the post body is coupled to the bone fixation element.

Abstract: In accordance with example embodiments, a system may include a first frame pivotally mounted on a second frame and a latch attached to the first frame. In example embodiments, the latch may include a latch arm pivotally connected to the first frame and a spring attached to the latch arm. In example embodiments the spring may include a wheel configured to engage the second frame so that when the wheel is engaged with the second frame, at least a portion of the latch arm is rotated above an upper surface of the first structure and when the wheel is not engaged with the second frame the latch arm is substantially, if not entirely, below the upper surface of the first structure.

Abstract: An apparatus adapter, including a first adapter member having an internal cavity with an opening thereinto, and a slot spaced away from the opening and oriented transverse of the internal cavity and communicating therewith. A second adapted member has an adaptation extension that is sized to be received into the internal cavity of the first adapter member, the adaptation extension having an interlock relief formed in an outer surface thereof and juxtapositionable with the transverse slot. A plunger has an elongated open band that is positionable about the first adapter member and movable transversely of the internal cavity, an interlock member that is projected into an interior of the band and sized to slidably extend through the slot of the receiver post and enter into the internal cavity, and a biasing member for biasing the interlock member into the internal cavity for occluding a portion thereof.

Abstract: The invention relates to a securing element for securing an axial stop element, in particular a C-clip, radially attached to a shaft. The securing element is designed in such a manner that it is attachable to the shaft and features at least one spring-elastic axle journal, which, in the attached state of the securing element, it exerts a radial holding force for securing the axial stop element (5). A shaft device and a differential gear with such a securing element for securing an axial stop element to a shaft of the shaft device or differential gear is also provided. An axial stop element with at least one positive-locking element that is lockable with one positive-locking element of such a securing element is also provided.

Abstract: An elastically deformable bridging piece includes an engaging protruding part between two ends of the piece, insertion of a portion of an attaching member in a direction intersecting a longitudinal direction of the bridging piece is permitted by elastically deforming the bridging piece by contacting with the engaging protruding part with the portion, and the engaging protruding part engages an engaging hole formed in the portion at an insertion terminating position by elastically returning the bridging piece. A restricting part restricting elastic deformation of the bridging piece is provided. When inserting the portion, the restricting part inclines the bridging piece to position the engaging protruding part on the obliquely downward side, and when a force in a reverse direction to the inserting direction acts on the portion located at the insertion terminating position, the restricting part restricts inclination of the bridging piece, which is reversely-oriented to the former inclination.

Abstract: An elastically averaging snap member aligning and fastening system has a first component and a second component. The first component includes a first body having a first surface portion and a second surface portion, the first body including one or more apertures extending between the first and second surface portions. The second component includes a second body having a first surface section and a second surface section, the second body including one or more elastically averaging snap members provided on one of the first and second surface sections. Each of the one or more elastically averaging snap members include a plurality of cantilevered snap elements configured and disposed to interferingly, deformably, elastically and matingly engage with corresponding ones of the one or more apertures.

Abstract: A locking clip for use with a hose coupling is provided that includes a first member and a second member that grasp and maintain a locking arm of a locking mechanism commonly used in conjunction with hose couplings.

Abstract: A fastening assembly used into a first workpiece and a second workpiece is provided. The fastening assembly includes a first engaging member, a reciprocating member and a second engaging member. The first engaging member is fixed to the first workpiece. The reciprocating member is fixed to a first side of the second workpiece and capable of reciprocally moving relative to the second workpiece. The second engaging member is connected to the reciprocating member for engaging with the first engaging member. After the fastening assembly is affected by a magnetic force from a second side of the second workpiece, the reciprocating member is shifted, and the second engaging member is separated from the first engaging member.

Abstract: System and method for assembling blow molded parts without the use of separate fasteners, including a tab-and-slot or dovetail mortise and tenon joint that includes a slide-and-lock tab feature. A retention barb on the tab slides along a ramp to engage with a receptacle within the slot. Tabs and slots can have varying widths to create mutual incompatibility with other joint components that are otherwise similarly constructed. An optional stopper on the tab and corresponding notch within the slot can add an additional axis of incompatibility with other joints throughout the assembly. These features prevent incorrect assembly and allow convenient redesigns.

Abstract: A system is described for hooking and unhooking a carrier bag with respect to the tank of a motorcycle. The system comprises a first group of components suitable to be fixed to the carrier bag and a second group of components suitable to be fixed to the tank. The first group of components comprises a flexible ring provided with a plurality of locking teeth elastically projecting inwards of such a flexible ring. The locking teeth are coupled with an annular flange of the second group of components to obtain the hooking of the carrier bag to the tank. On the flexible ring there is a hand-driven mechanism for the radial retraction of the locking teeth to generate a radial displacement of such locking teeth, allowing disengagement between the flexible ring and the annular flange and, hence, obtaining the disengagement of the carrier bag from the tank.

Abstract: A clip may have a clip body configured to be attached to a rib formed in an attaching article and configured to be inserted into an attaching hole formed in an object panel. The clip body includes a clamping portion configured to be coupled to the rib via an engagement slot formed in the rib, and an engagement portion elastically engageable with the attaching hole. The engagement portion has a biasing body that is configured to elastically contact an outer surface of the rib when the engagement portion is deformed inwardly caused by an extraction load applied to the clip body. The biasing body is positioned so as to contact the outer surface of the rib in a position closer to a distal end of the rib than the engagement slot.

Abstract: An attaching and detaching device that detachably attaches two structures includes a base fixed to one structure of the two structures and formed in a tabular shape, one or more engaging members supported by the base movably along a surface direction of the base and configured to engage with the other structure, an urging member configured to urge the engaging member toward an engaging direction in which the engaging member engages with the other structure, and a releasing mechanism including an operation lever configured to perform operation for moving the engaging member in a direction opposite to the engaging direction and releasing an attached state in which the two structures are attached to each other.

Abstract: A seat assembly having a guide bushing. The guide bushing has an opening for receiving a support post. First and second engagement features are provided that are configured to engage the support post. The first engagement feature is configured to flex in response to a biasing force exerted by a biasing member.

Abstract: A frame connector assembly is configured to releasably, rigidly, and safely join large frame members to one another to form temporary structures. A connector assembly typically comprises a housing, a hoop element, a first cam block, a second cam clock and a rotatable actuator adapted to be engaged by a torquing tool. The housing is secured within the first frame member. Rotation of the actuator causes the threadedly-engaged second cam element to force movement of the first cam element in a direction opposing a spring bias. The hoop element is resultingly pulled toward the housing, along with a cleat or other detent element which is affixed to the second frame member. The housing can be manufactured inexpensively by way of extrusion. The frame connector assembly is adaptable to facilitate rapid construction and disassembly of various frame joint configurations, including end-to-face joints, and mitered 90-degree joints.

Abstract: A fence/railing post cap system for use with a fence/railing post includes a decorative and utilitarian structure which enables removal and storage of a cap of the system to accommodate reception of beverage containers and the like within a base of the system and which provides for a pole with accessory structures therein to be mounted on the base by passing through an opening in the cap when the cap is in position on the base.

Abstract: This is to fasten a panel to a wall. The device comprises a male member to engage on the panel and a female member to engage on the wall. For its engagement on the periphery of an aperture of the wall having a contour having two crenels facing each other and two circle arcs facing each other and each extending from one to the other of the crenels, the female member comprises a butt enabling the angular position of the female member to be indexed in relation to the wall, in order for an actuating part of the female member to be turned towards an outside edge of the wall. The assembly comprises the fastening device, the wall and the panel. Advantageously, the assembly also comprises a tool capable of insertion between the wall and the panel to reach the actuating part of the female member.

Abstract: An assembly includes a resistor pack, a first spring clip, and a first rigid connector. The resistor pack has a first clip-shaped cavity therein. The first spring clip is disposed within the first clip-shaped cavity and the first connector is abutted by opposing portions of the first spring clip.

Abstract: The present disclosure relates generally to workspace organization systems, and more particularly to wall-mounted systems for use in workspace organization. In one embodiment, a system configured to couple to a wall includes a mount configured to be detachably couple to the wall, the mount including a frame having opposing front and rear surfaces, and a panel detachably coupled to the mount, the panel configured to detachably support at least one accessory.

Abstract: A device for fastening or securing constructional elements includes a fixing member and a support. The fixing member includes a rod and radially outwardly projecting locking arms, placed at the extremity of the rod, and the support having a cut-out with cut-out sections extending radially outwards from a centre of symmetry of the support. The support further includes locking projections formed between the cut-out sections, the locking projections having a spring plate portion and a latching portion. The spring plate portions are set at an angle to a plane of an upper surface of the support and are provided with a socket shaped to receive and be engaged with part of the locking arms. The locking arms are adapted to be guided axially through the cut-out and rotated to effect latching behind the locking projections.