Abstract: The present invention in a preferred embodiment provides systems and methods for a velocity gradient floating turbine and power generation, comprising: a) a floating platform; b) guide vanes; c) a velocity gradient turbine; d) a gas compressor; e) a means to couple turbine and compressor, further comprising a turbine gear and a compressor gear or belt/chain drive; f) at least a pipe; and g) a turbine—generator sub-system; wherein the said floating platform comprises: i. at least two tanks; ii. at least a rod to support the said tanks; and wherein the said turbine—generator sub-system comprises: i. a turbine ; and ii. a generator.

Abstract: An airflow control arrangement for a direct-drive wind-turbine with a generator comprising a rotor and a stator, which airflow control arrangement comprises an outflow fan arranged to draw an exit airflow through an exit duct, which exit duct extends from an interior cavity of the stator to the exterior of the wind turbine. The invention further describes a direct-drive wind turbine comprising such an airflow control arrangement. The invention further describes a method of controlling an airflow in a direct-drive wind-turbine with a generator comprising a rotor and a stator is provided.

Abstract: A platform-like device for generating electricity from moving fluids has at least two fluid turbines coupled to one another through a frame. The fluid turbines are adapted to rotate in opposite directions. The fluid turbines also provide buoyancy for the platform so that the platform is self supporting in the water. The fluid turbines preferably have helicoid flights (screw-like threads) mounted to generally prolate casings. The fluid turbines preferably connect to electric generators through belt, chain-drive, or other transmission systems. The platform may additional support a wind turbine.

Abstract: A hatch cover is provided for a hatch of a nacelle for a wind driven power plant. The hatch cover includes several segments configured to remain within a hatch opening when a hatch is in an open position.

Abstract: A solar actuator comprises a top coupler, a bottom coupler, and a plurality of fluidic bellows actuators, wherein a fluidic bellows actuator of the plurality of fluidic bellows actuators moves the top coupler relative to the bottom coupler.

Abstract: A geothermal power generation system using heat exchange between working gas and molten salt includes a heat collector. A plurality of molten salt containers is disposed in a heat transferor at predetermined intervals from each other. A heat exchanger transfers a heat source of the heat collector to the molten salt in the plurality of molten salt containers. The heat transferor is disposed in the ground. Working gas which receives the heat source of the molten salt via heat exchange enters and exits the heat transferor. A turbine unit is connected to the heat transferor, and generates mechanical energy using energy of the working gas. A power generating unit is connected to the turbine unit, and generates electrical energy using the mechanical energy.

Abstract: Provided is a consumer to industrial scale energy trigeneration process based microgrid combined cooling, heat and power. The present invention includes conversion, processing, extraction and/or storage systems for electrical, chemical and thermal energy. The invention provides a quintessential renewable energy ecosystem incorporating vital energy generation, thermal heating and cooling processes with integrated components installed to encompass a distributed renewable energy generation, energy storage and integrated automation system. The automation system of the invention provides the ability to view, monitor, analyze, control and interact with system components.

Abstract: A rotational shaft 22 receives input of torque that is output from an electric motor 19. A housing 23 rotatably supports the rotational shaft 22. A cylinder block 24 inside the housing 23 rotates with the rotational shaft 22. The pistons 25 are supported relative to the respective cylinder chambers 24a in the cylinder block 24 so as to be slidably displaceable. A swash plate 26 is provided so as to come into contact with ends of the pistons 25 and be rotatable around the rotational shaft 22 with the pistons 25, and be rotatable about a rotation centerline that is obliquely inclined relative to the rotational shaft 22. A case 27 inside the housing 23 is pivotably supported relative to the housing 23. A bearing portion 28 holds the swash plate 26 relative to the case 27 so as to be rotatable around the rotation centerline.

Abstract: This disclosure relates to medical fluid delivery sets and related systems and methods. In some aspects of the invention, a medical fluid delivery set includes a syringe connected to a series of interconnected fluid lines. The syringe includes a medical fluid containment cylinder and a plunger assembly that can be axially moved relative to the medical fluid containment cylinder. The plunger assembly includes an inner plunger shaft including a seal that is slidably disposed within the medical fluid containment cylinder and an outer plunger shaft that at least partially surrounds the inner plunger shaft to form a space between an outer surface of the inner plunger shaft and an inner surface of the outer plunger shaft that is sized to receive a wall of the medical fluid containment cylinder therein.

Abstract: The damper mechanism used for a high-pressure fuel supply pump system is configured so that an outer circumferential surface of a cover in regard to the thickness direction of the base material of the cover engages with the inner circumference of an open end part of a bottomed tubular concave part formed in a damper housing or in a pump housing of the high-pressure fuel supply pump. The total height of the damper as a low-pressure pulsation reducing mechanism can be reduced and the dimensions of the damper in the radial directions can also be reduced. In cases where the damper mechanism is formed integrally with the high-pressure fuel supply pump, the total height of the high-pressure fuel supply pump can be reduced and the dimensions of the damper part in the radial directions can also be reduced.

Abstract: The present invention concerns itself with systems and methods for the dissipation of hurricanes and/or tropical storms through the use of wind turbine pumps. These pumps, which are driven by the storm's own winds, draw cold deeper water from below the storm and spray it high into the air. This cold spray absorbs the heat energy from the air thus removing the driving force (the heat energy) from the hurricane. The spray also acts as a brake on wind speed. Hence, by using a series of these wind turbine pumps acting in cohesion, dissipation of hurricanes and/or tropical storms may be achieved.

Abstract: A pumping device compresses fluid, provides a vacuum, or both compresses fluid and provides a vacuum. A pumping device may be used to force gas through a sieve bed, draw gas out of a sieve bed, or both force gas through a sieve bed and drawing gas out of a sieve bed. A pumping device may be operated at high speed to provide a high fluid flow rate with a small pumping device.

Abstract: A fourth pin that slides on a rotary shaft is provided to a swash plate. A guiding surface for guiding the fourth pin is provided to the rotary shaft. The fourth pin is guided by the guiding surface, the swash plate is supported by the rotary shaft via the fourth pin, and a force having a component in a direction orthogonal to the direction of movement of a movable body acting on the swash plate is thereby reduced. Accordingly, there is a reduction in the force, which has a component in a direction orthogonal to the direction of movement of the movable body, acting on a coupling section of the movable body via a third pin from the swash plate. As a result, when the inclination of the swash plate is changed, unwanted tilting of the movable body relative to the direction of movement is suppressed.

Abstract: Staged peristaltic pump systems and related methods are disclosed. A system may be configured such that the working fluid pressure differential across any individual stage of the system is smaller than the pressure across the entire system. In some embodiments certain components of each stage may be sealed from fluid communication with an external environment, though working fluid may be configured to cross the boundary of the seal. In some embodiments, stages may be pressurized with respect to an external environment.

Abstract: A roller assembly comprises a central section with a hub; a plurality of flexible arms coupled to the central section; a plurality of spring pins, one spring pin coupled to each of the plurality of flexible arms; a plurality of arms coupled to the central section such that each arm is capable of pivoting independently with respect to the central section; and a plurality of rollers, one roller coupled to each of the plurality of arms.

Abstract: A pressure monitoring device for use in an air system of a vehicle and for controlling a compressor comprises an input air connector for connection to an air tank and for receiving an input pressure from the air tank. A first signal air connector can output a pneumatic ON-load signal for adjusting the compressor to an operation mode. A second signal air connector can output a pneumatic OFF-load signal for adjusting the compressor to a non-operation mode.

Abstract: A control arrangement for controlling a piston pump unit for liquid chromatography, in particular high-performance liquid chromatography, is described. The piston pump unit has at least two piston-cylinder units which operate cyclically in a phase-offset manner and generate, at an outlet port, a predetermined flow of a liquid medium to be delivered. A system pressure is established at the outlet port, irrespective of an associated fluid load resistance. The control arrangement is configured to record the pressure in the cylinder volume of at least a first of the at least two piston-cylinder units. During a measurement phase of the compression phase of the first piston-cylinder unit or during a measurement phase of the decompression phase of the first piston-cylinder unit, the control arrangement stops the drive device for the first piston-cylinder unit for a predetermined time period and in the process records measurement data which characterize the time profile of the pressure.

Abstract: An air compressor includes a cylinder housing, an outlet receptacle disposed on the cylinder housing, and a partition formed between the cylinder housing and the outlet receptacle and having an air passage formed in the partition, a piston slidably received in the cylinder housing and coupled to a motor for moving relative to the cylinder housing in a reciprocating action in order to generate a pressurized air, and a spring-biased check valve engaged with the partition for selectively blocking the air passage of the partition, the outlet receptacle includes an inner diameter “D2” no less than an inner diameter “D1” of the cylinder housing for allowing the pressurized air to easily flow into the outlet receptacle and for allowing the piston to be moved in a greater moving speed.

Abstract: The invention relates to a two-spindle screw pump of single-flow construction, comprising a pump housing, which has a pump portion, a bearing portion and a gear portion with a gear chamber, wherein the bearing portion and the pump portion are realized separately from each other characterized in that the gearwheel and the fastening element (and thus the shaft) are mutually rotatable, so that a spacing of the flanks of the feed screws (the flank clearance of the feed screws) is adjustable, that an opening is provided on the gear portion of the pump housing, that the opening is provided with a detachable cover, that the opening is arranged such that the cover is detachable in the mounted state of the screw pump, and that the gear chamber, for the adjustment of the flank clearance of the feed screws, can be reached with the tool necessary for this purpose.

Abstract: A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform.

Abstract: The invention relates to a vacuum pump, in particular a screw pump, having preferably two displacement body shafts (2, 3), coupled via a gearing, which drive displacement bodies (12, 13), and having an inner recess (14), extending in the direction of a geometric axis (A) of the displacement body shaft (2, 3), in which a tubular body (20) extends for conducting cooling fluid while leaving a free space between an inner surface of the recess (14) and an outer surface of the body (20).

Abstract: The orbiting base plate has a compression side surface and a back pressure chamber side surface. The gas passage has an opening in the compression side surface of the orbiting base plate between portions of the orbiting spiral wall that face each other, and the gas passage has an opening in the back pressure side surface at a position that faces an area on a radially inner side than the outer circumference of the bearing, so as to feed the refrigerant gas in the compression chamber to the back pressure chamber.

Abstract: An electric pump includes a housing and a motor unit having a stator disposed in the housing. A rotor is rotatably disposed on the stator and a rotating shaft is inserted in and passing through the rotor. A pump comprises an inner rotor coupled to one end of the rotating shaft and an outer rotor, and the pump has an inserting recess for receiving the pump.

Abstract: A centrifugal pump has a gas accumulation reduction system to reduce the risk of gas locking caused by the accumulation of gas at the inlet of the impeller. The gas accumulation reduction system includes: (i) one or more diffuser ports extending through the hub of a diffuser; and (ii) one or more recirculation passages extending through the hub of an impeller. The recirculation passages are in fluid communication with the one or more diffuser ports to permit the recirculation of a portion of pumped fluid through the stage. Additionally, a centrifugal pump that includes at least one turbomachinery stage. The stage includes a rotatable impeller that has an impeller hub with a centrally disposed eye and a plurality of impeller vanes. The impeller is variously configured to encourage mixing of two-phase fluids at the eye of the impeller hub.

Abstract: A pump assembly with an electric drive motor and with an electronics housing (10). The electronics housing in which at least one first electrical circuit board (14) is arranged. On the circuit board electrical contacts (18) are formed. Via the electrical contacts, at least one electronic component (16), in the inside of the electronics housing (10) may be programmed. At least one opening (22), through which the electrical contacts (18) on the circuit board (14) are contactable from the outside, is formed on a wall (20) of the electronics housing (10).

Abstract: An air blowing unit of an air conditioner includes a housing to guide suction and discharge of air, a centrifugal fan positioned inside the housing, and a motor to drive the centrifugal fan. The centrifugal fan includes a base coupled to a motor shaft coupled to the motor, a plurality of blades disposed spaced apart from each other in a circumferential direction of the base to guide air introduced in an axial direction of the base to the circumferential direction, a leading edge provided to the blades and arranged close to the motor shaft, a trailing edge provided to the blades and facing in an outer circumferential direction of the base, and at least one first blade of the blades, the leading edge of the first blade being shorter than the leading edge of the other blades.

Abstract: A support assembly and method for supporting an internal assembly in a casing of a turbomachine are provided. The support assembly may include a support member that may be slidably disposed in a recess formed in the internal assembly and configured to engage an inner surface of the casing. A biasing member may be disposed in a pocket extending radially inward from the recess. The biasing member may at least partially extend into the recess and may be configured to apply a biasing force to the support member disposed therein.

Abstract: A turbocharger arrangement comprises a turbocharger and a generator. The turbocharger comprises a turbine having a turbine wheel and a compressor having a compressor wheel. The turbine wheel and the compressor wheel are mounted to a shaft, the shaft being supported by a bearing assembly located in a bearing housing between the turbine and the compressor, such that the shaft may rotate about an axis; The compressor wheel is between the generator and the bearing assembly; and an inducer portion of the compressor wheel is between an exducer portion of the compressor wheel and the bearing assembly.

Abstract: An exemplary cooling fan includes a base, a central tube formed at the base, a stator, and a rotor being rotatable relative to the stator. The central tube is made of polyoxymethylene. The central tube includes a bottom plate mounted on the base and a peripheral sidewall extending upwardly from a peripheral edges of the bottom plate. The bottom plate and the sidewall cooperatively define a blind hole therebetween. The stator is mounted around the sidewall of the central tube. The rotor includes a hub and a shaft extending from the hub. The shaft includes a free end received in the blind hole and directly abutting the bottom plate.

Abstract: The proposed mechanical method of turbocompressor surge detection uses vibration signals from vibration monitoring equipment mounted on the compressor components to detect a surge event and provide antisurge control thereby. This method utilizes only mechanical information to identify surge, as compared to present day antisurge controllers that use compressor thermodynamic information such as flow, pressure, and temperature to locate a compressor's operating point on a compressor map compared to a surge region.

Abstract: The invention broadly contemplates a safety arrangement that transitions a moving component, for example a cooling fan housed within a chassis of an electronic device, between a first operating mode or condition and a second operating mode or condition. The first operating mode is a normal operating mode, allowing the component (fan) to operate (rotate) at full speed. The second operating mode is a safety or service mode, allowing the component (fan) to operate (rotate) at a reduced speed such that it is compliant with applicable safety regulations.

Abstract: An electric submersible well pump assembly includes a rotary pump and an electrical motor. The motor has a motor housing filled with a dielectric lubricant. A stator formed of a stack of stator disks with a stator bore is stationarily mounted within the motor housing. A motor shaft extends through the bore. A rotor is mounted to the shaft for rotating the shaft and has a stack of rotor disks. Axially spaced-apart radial stabilizing portions along the rotor have outer peripheries that are greater in outer diameter than remaining portions of the rotor. The outer peripheries of the stabilizing portions rotate with the rotor and are closely spaced to the inner diameter of the stator to radially stabilize the shaft.

Abstract: A magnetic bearing assembly includes a lamination stack with coil apertures extending between opposing sides. A continuous unitary insulation layer is overmolded onto the opposing sides and within the coil apertures providing a coil aperture lining. The insulation layer includes a wall within the coil aperture adjoining coil aperture lining and bisecting the coil aperture into first and second openings. A coil portion is disposed in each of the first and second openings and electrically isolated from one another by the wall. The magnetic bearing assembly is arranged in a refrigerant compressor that includes an electric motor rotationally configured to rotationally drive an impeller via a shaft. A controller is in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft.

Abstract: A rotor assembly that includes a shaft to which are mounted an impeller and a bearing assembly. The bearing assembly is located at least partly within the profile of the impeller so as to reduce loading of the bearing assembly as well as reduce the cantilever length of the rotor assembly.

Abstract: A rotor that includes an impeller secured to a shaft. The impeller has a bore and a counterbore. The shaft forms an interference fit with the bore and is adhered to the counterbore. A method of manufacturing the rotor is also described.

Abstract: The present invention is a turbo machine that is provided with an impeller that is rotated, and with a shaft that transmits rotation power to this impeller, wherein there is provided a differential screw having an impeller screw portion that is provided at one end thereof and that is screwed into the impeller, and having a shaft screw portion that is provided at another end thereof and that is screwed into the shaft, and that fastens the impeller and the shaft together, and wherein, in the differential screw, a thread diameter of thread ridges that are formed on the impeller screw portion is formed the same as a thread diameter of thread ridges that are formed on the shaft screw portion, and a screwing direction of the thread ridges that are formed on the impeller screw portion is formed as the same direction as a screwing direction of the thread ridges that are formed on the shaft screw portion, and a pitch between the thread ridges that are formed on the impeller screw portion is formed smaller than a pitch

Abstract: A noise tone occurring at a blade passing frequency in a blower for an automotive HVAC system is suppressed. The blower includes a centrifugal fan and a scroll body disposed around the fan. An outlet extends from the scroll body to conduct an air flow from a cutoff point of the scroll body. An inlet is coupled to the scroll body defining an inlet throat comprising an arcuate ring extending between a base and an annular end coaxially disposed over the fan. A partial-perimeter wall extends upstream from the arcuate ring having a height between about 4% and about 6.5% of an inner diameter of the annular end. The wall spans a perimeter portion of the circumference of the throat between about 120° and about 180°. As a result, noise at the blade passing frequency is suppressed without any significant reduction in air flow.

Abstract: A bladeless fan assembly is provided which includes a housing having an air inlet and an air outlet. A blower is located within the housing, and includes a motor for driving an air stream between the air inlet and air outlet of the housing. A directional scoop is affixed to the housing at the air outlet. The directional scoop including a first end, connected to the housing at the air inlet, and a second open end opposite the first end. The first end and second open end of the directional scoop define a longitudinal length “L” of the directional scoop having a longitudinal axis “X.” The directional scoop is arcuate is shape, being curved along the longitudinal axis between the first and the second open end, and about the longitudinal axis to define an open channel along the length of the directional scoop.

Abstract: An electric pump has a pump casing, a sealing plate, an impeller and a motor for driving the impeller. The pump casing has a main body. A recess is formed in the main body and with the sealing plate defines a pump chamber. A suction port is connected to the pump chamber by a suction channel and a suction passage formed in the main body. A discharge port is connected to the pump chamber by a discharge channel. The suction passage extends axially from the recess. The recess, suction passage, suction channel and discharge channel are all shaped in a manner allowing the pump casing can be molded as a monolithic structure in a single injection molding process.

Abstract: A hydraulic valve (3, 3?) of a servo-control for feathering the blades (1) of a rotorcraft rotor. The hydraulic valve (3, 3?) comprises a main valve member (5) and an emergency valve member (6) blocked relative to a valve cylinder (4) of the hydraulic valve (3, 3?) by means of a pin (23) in sliding thrust engagement in a cavity (24) of the emergency valve member (6). Relative movement between the emergency valve member (6) and the valve cylinder (4) initiating sliding movement of the pin (23) inside the cavity (24) and causing mover means (27) for moving the pin (23) to be put into operation, thereby releasing the emergency valve member (6) to move freely.

Abstract: An electronic regulator includes an inlet valve coupled to an inlet port, the inlet port configured to receive a supply pressure, and an exhaust valve coupled to an exhaust port, the exhaust port configured to release a pilot pressure when the exhaust valve is open. The electronic regulator also includes a pilot pressure output pneumatically coupled to the inlet valve and exhaust valve and configured to be coupled to an external process control device to provide the pilot pressure to the external process control device. A setpoint input coupled to both the inlet valve and the exhaust valve receives a setpoint signal indicative of a setpoint value, and the electronic regulator operates the inlet valve and the exhaust valve to control the pilot pressure according to the setpoint value. Further, the electronic regulator includes a vent valve coupled to a venting port and pneumatically coupled to the pilot pressure output.

Abstract: An oil control valve has a cup shaft and a plunger. The cup shaft and the plunger have a projection and a recess to provide a male-female joint. The male-female joint provides contact points which can reduce lateral offset and inclination. The projection and the recess provides two or more force transmitting points from the plunger to the cup shaft, when the projection and the recess are inclined with each other. The force transmitting points are located about the central axis of the spool in a distributed manner.

Abstract: A tripod having legs which automatically open and close when the device is placed on a support surface and removed from the support surface, respectively. The device includes a telescopic center post, a plurality of downwardly extending support legs, a plurality of coupling links pivotally attached at one end to a bottom end of the center post and pivotally attached at the other end to the bottom end of the support legs. The attachment of the coupling links to the support legs is linked at the bottom of the support legs so that the coupling serves as a foot on the support surface when extended. Hinge-type mechanisms between the coupling links and support legs allows the support legs to close to a vertical position parallel and adjacent to the center post while allowing the legs to automatically open when the tripod is placed on the support surface.

Abstract: Provided is a boot band that is configured for preventing the occurrence of buckling in the inner-layer portion of a band body. In the boot band, by applying a diameter-reducing tightening force on the band body when an engagement pawl of an inner-layer portion of the band body has entered a top-end engagement hole of an outer-layer portion of the band body, the top-end engagement hole rides over the engagement pawl. Buckling is prevented by providing, at the area of the top-end engagement hole opposite where the engagement pawl enters therein, a guide that faces the engagement pawl.

Abstract: A connection terminal structure includes a basic element and a clamping element. The basic element is bent to be L-shaped and includes a longitudinal arm and a transverse arm connected to the longitudinal arm. An upper end of the longitudinal arm forms an engaging flange and an engaging shoulder portion. A right end of the transverse arm forms a joint portion. The clamping element comprises a resilient clamping arm, a supporting arm, and a connecting arm. The connecting arm forms an opening portion and extends from the supporting arm to the longitudinal arm. The opening portion fits around the engaging shoulder portion. A lower end of the supporting arm forms a joint end jointed to the joint portion. The resilient clamping arm connects with the supporting arm, extends to the longitudinal arm, has a front end engaging with the engaging flange, and penetrates the opening portion to move resiliently.

Abstract: To enhance the positioning accuracy between primary members and auxiliary members without need of latch parts such as rivets, an insertion frame structure includes: a pair of primary members having L-shaped cross-sections and placed with the L shapes facing to each other symmetrically; and several auxiliary members having angular U-shaped cross-sections between the primary members. The primary members and the auxiliary members are joined at latch portions. The latch portions of the primary members have clearance-shaped latch holes. The latch portions of the auxiliary members have convex portions to be inserted into the latch holes. Each latch hole has a clearance with a larger dimension than a plate thickness t of the auxiliary members, and continuously from the clearance, a clearance with a dimension smaller than the plate thickness t of the auxiliary members.

Abstract: An assembly comprising two parts temporarily connected by a connecting element surrounding the assembly. The connecting element being subjected to an internal deformation stress. The assembly having stress-keeping means with controlled stress relief, which connect two opposite ends of the connecting element so as to counteract the internal deformation stress. The assembly includes attaching means for attaching the connecting element to each of the parts. The attaching means includes at least two layers of cured adhesive which respectively coat the parts and make a surface connection between each of these parts and the connecting element. The internal deformation stress is at a sufficient level to enable the connecting element to be unsecured from the parts by extending to a rest position, when the stress-keeping means are controlled so as to release the ends of the connecting element.

Abstract: A plural tapered fastener with a material receiving inward region. Fastener embodiments have particular utility in penetrating and securing work pieces of high density material, such as medium density fiberboard and high density fiberboard, without blemishing of the workpiece. A fastener may have a head and a shank extending from the head with an axis being defined by the shank and head. A head projection extends from a proximal end to a distal end away from the axis. A tapered portion is provided in the shank which tapers the shank axially inward to the head to define a material-receiving tapered inward region. A further tapered portion is provided along a lower leading edge of the head projection. During fastener driving, the inward region receives displaced workpiece material and the tapered head projection better penetrates the workpiece providing for more complete fastener driving with minimized blemishing of the workpiece.

Abstract: A multiple quick connector (MQC) assembly is described herein. The MQC assembly includes a male sub-assembly that includes a plurality of quick connectors coupled to a first circular plate, and an actuator coupled to the first circular plate. The actuator is configured to actuate a shaft having a draw nut attached to an axial end of the shaft. The MQC assembly also includes a female sub-assembly that includes a plurality of couplers coupled to a second circular plate. Each of the couplers is configured to couple to a respective quick connector of the male sub-assembly. The second circular plate comprises an aperture disposed therethrough. Actuation of the shaft causes the draw nut to extend axially through the aperture, and to rotate with respect to the aperture to lock the male sub-assembly axially with respect to the female sub-assembly.

Abstract: Bulging portions elastically coming into contact with an inner peripheral surface of a fixation hole of a panel member are formed on an outer peripheral surface of a shaft portion of a waterproof clip made of an elastic material, thereby sealing a space between these surfaces by elasticity of the bulging portions to obtain a waterproof function, and firmly fixing the shaft portion to the panel member by friction force between the inner peripheral surface and the bulging portions. The clip requires no special seal member, thereby reducing the number of parts and assembly steps. Each bulging portion is formed narrower toward the front side in the insertion direction of the shaft portion, thereby easily press fitting the shaft portion into the fixation hole while improving waterproofness and airtightness by sufficiently compressing the bulging portions. The clip can surely fix an interior material to the panel member with excellent sealability.