27 results about "Interference fit" patented technology

A fence may include a support member that is sized and configured to support a portion of the fence. The support member may also facilitate attachment of the fence to a fence post. For example, a clip may be used to connect the support member to the fence post. The clip may include an opening with a generally teardrop-shaped configuration and the end of the support member may be disposed within the opening. In particular, the opening in the clip may include a first section that is larger than an end of the support member to allow the support member to freely move relative to the clip, and a second section that is generally equal to or smaller than a portion of the support member to secure the support member and clip in a generally fixed position. This may allow the clip to be attached to the support member by a snap, friction or interference fit.

A coupling assembly for use in surgical constructs comprises a first body and a second body. One of the first body and the second body includes a male member and an other of the first body and the second body includes a female member. The male member is sized and shaped to be received within the female member and the female member has an internal bore sized and shaped to receive the male member therein. A raised portion is formed on or attached to the male member. An area of decreased diameter is associated with the internal bore of the female member. The first and second bodies are coupleable to one another by an interference fit when the raised portion of the male member is positioned within the area of decreased diameter associated with the internal bore of the female member.

The invention discloses a novel lock bolt comprising a screw, a first locking member and a second locking member. The first locking member comprises a first nut, a boss and a small taper expansion sleeve, the first nut, the boss and the small taper expansion sleeve are integrally arranged, the outer wall of the boss is provided with a first external thread, and the inner wall of the first lockingmember is provided with a first internal thread matched with the screw; and the second locking member comprises a second nut, the two ends of the inner wall of the second nut are provided with a second internal thread and a third internal thread which are matched with the first external thread and the screw correspondingly, the middle portion of the inner wall of the second nut is provided with aninner tapered surface in interference fit with the small taper expansion sleeve, and the axes of the second nut and the first nut are eccentric. The novel lock bolt is of a new structure, ensures bolt strength, is more reliable in loosening prevention and can solve the problem about safe connection of equipment with large vibration or large temperature differences.

The invention discloses a pull rod structure of a low-temperature container. The pull rod structure comprises a pull rod body, a metal sleeve and a pretightening nut. The metal sleeve is provided with a through hole, and a thread is arranged on an outer cylinder face. The metal sleeve is arranged at the end of the pull rod body, and the metal sleeve and the pull rod body are in interference fit. The pretightening nut is arranged on the metal sleeve. The pull rod structure is simple and compact, the needed installation space is small, the manufacturing cost is low, strength is high, safety is high, heat leakage is small, and performance is reliable.

A multi-way pipe connector for a tubular frame, applied to connect a plurality of connection tubes so as to form the tubular frame, includes a main connector body, a plurality of connection protrusions and a plurality of elastic O-rings. The connection protrusions are extending individually in corresponding extension directions from the main connector body, and each of the connection protrusions has an outer wall including at least one annular groove. Each of the plurality of elastic O-rings is to sleeve one said corresponding annular groove of the respective connection protrusion so as to form a dimensional interference fit relationship with an inner wall of the corresponding connection tube sleeving the connection protrusion.

A low-temperature cable outlet joint is characterized in that it includes a flange assembly, the flange assembly includes a normal pressure side flange and a pressure side flange, and the normal pressure side flange and the pressure side flange are sealed and fixedly connected, so The inner side of the normal pressure side flange is provided with a pressure chamber, the pressure chamber is encapsulated with nitrogen gas, the normal pressure side flange has a first wiring hole, and the pressure side flange has a coaxial with the first wiring hole The second wiring hole, the first sealing member is fitted with radial interference in the first wiring hole, the second sealing member is fitted with radial interference in the second wiring hole, and the first and second wiring holes are fitted with radial interference. The connecting post is threadedly connected, and the outer side of the connecting post is fixedly connected with a sealing sleeve. A primary seal is formed with the pressure side flange through the first seal, and a secondary seal is formed with the normal pressure side flange through the second seal. A good sealing effect is achieved under the action of two-stage sealing. The invention has the advantages of simple structure, low cost and good sealing effect.

The invention discloses a spraying unmanned aerial vehicle for agriculture, the structure of which comprises a feed inlet, a spray head, a frame, an ultrasonic device, a driving device, a rotor, a transverse connecting rod, a ground contact rod, a liquid storage tank, and a water level sensor. The front and back of the frame are center-symmetrical, the upper end of the frame is an I-shaped structure, the upper and lower ends of the frame are parallel to each other, and the frame and the nozzle are movably connected by interference fit. The end surface is provided with a driving device, the driving device is transitionally matched with the rotor, the upper end surface of the frame is connected to the ultrasonic device and the contact surface is a rectangle with the same diameter, and the ultrasonic device is placed on the transverse connecting rod, the beneficial effect of the present invention In order to set up a water level sensor, by placing the water level sensor in the liquid storage tank, the sensor chip senses the water level, and when the remaining liquid storage tank is insufficient, the signal is transmitted to the controller, and the controller controls the spraying drone to return automatically for feeding. Save time and improve spraying efficiency.

The invention relates to an electromagnetic valve and a gas device. The electromagnetic valve includes a magnetically conductive support, a coil component, a static iron core, a sleeve, a movable ironcore, a sealing cap and an elastic piece; the coil component is provided with a second through hole corresponding to a first through hole; the static iron core is arranged in the second through hole;the sleeve passes through the first through hole and extends into the second through hole, the outer side wall of the closed end of the sleeve is in interference fit with the static iron core, and the inner side wall of the sleeve is provided with a first convex part; the movable iron core is movably arranged in the sleeve, the outer side wall of the movable iron core is provided with a limit groove along the axial direction, the first convex part is movably arranged in the limit groove along the axial direction, the outer side wall of one end of the movable iron core is provided with an avoiding part, and the movable iron core is connected with the sealing cap; and the elastic piece is arranged between the sealing cap and the magnetically conductive support. Because the first convex partis arranged in the limit groove and only moves in the limit groove, that is, the sleeve can prevent the movable iron core from coming out, so that the production work efficiency is higher; and at thesame time, the movable iron core is provided with the avoiding part, so that the movable iron core and the sleeve are conveniently assembled and disassembled.

The invention relates to the technical field of the production of heavy machinery, and particularly relates to a steel plate type circular thin-walled quenching roll. The steel plate type circular thin-walled quenching roller comprises a roller body with a thin-walled hollow structure, and also comprises an end plate, a supporting plate and a rotating shaft, wherein the inner wall of the roller body is provided with lug bosses which are uniformly distributed along the circumferential direction, the end plate is spot soldered on two side ports of the roller body, the end plate is in interference fit with the inner wall of the roller body, the supporting plate is arranged on the lug bosses of the inner wall of the roller body, the supporting plate is also in interference fit with the inner wall of the roller body, and the end plate and the supporting plate are also soldered on the rotating shaft. The steel plate type circular thin-walled quenching roller is reasonable in structure and has relatively light weight. Soldering spots which are produced by spot soldering the end plate on two side ports of the roller body can be removed after the quenching, and thus the outer attractive appearance of the roller body can be ensured; and with the design of the lug bosses, the structure is novel, the supporting plate can be well supported, the supporting plate cannot move in a longitudinal direction after the roller body is quenched, and the roller body after being quenched cannot produce deformation.

The invention discloses a multi-section type roasting furnace provided with a platform, which comprises a first furnace body which is located at the lower part and provided with a hollow chamber, a second furnace body which is located at the upper part and provided with a hollow chamber, as well as a safe platform fixed on a foundation, wherein a first interface is arranged on the first furnace body; a second interface is arranged on the second furnace body; the first interface and the second interface are in interference fit; the first furnace body and the second furnace body are connected through a flexible structure fixed between the first interface and the second interface; and the second furnace body is detachably connected onto the safe platform. According to the multi-section type roasting furnace, compared with a one-section type roasting furnace, the height is reduced obviously, resonance is not prone to occur, vibration transmission between the two furnace bodies can be restrained effectively, depth for foundation construction is shallower, the cost is reduced, the time is saved, and the construction progress is accelerated; and further, a manner of wind load transmission of the furnace top located in a high position is changed, the wind load is transmitted to the foundation through the safe platform instead of the furnace bodies, and the standing stability and the structural safety of the first furnace body are enhanced.

The invention discloses a connecting structure of a movable reed and a yoke of a miniature PCB relay and an assembling method thereof. The connecting structure of the movable reed and the yoke comprises an armature, the movable reed and the yoke. The yoke is provided with a bulge; the movable reed is provided with a bulge matching hole; the bulge matching hole comprises a clearance fit hole and aninterference fit hole which are connected with each other; and a positioning adjusting structure is arranged between the movable reed and the yoke so that the bulge of the yoke is arranged in the bulge matching hole of the movable reed through the clearance fit hole through adjustment, and the interference fit hole is matched with the bulge of the yoke after installation. According to the invention, an influence of deformation of the movable reed on the relay product caused by an original riveting process can be avoided, and a defect that copper thorns are easily scraped from the bulge position of the yoke in the prior art can also be avoided; and moreover, pressure consistency of the armature at the knife edge of the yoke can be ensured so that the consistency of mechanical parameters ofa product is improved.

The invention relates to the technical field of automobile parts, and specifically discloses a car tail gate electric opening and closing device with a straight built-in tension spring, which comprises a motor tube, an outer tube is arranged at the periphery of the motor tube, the motor tube is riveted with a motor end cover, the outer tube is riveted a spring seat, the spring seat is in bolt connection with a spring end socket, the motor tube is internally provided with a motor, the motor drives a screw rod to rotate, the screw rod is in transition fit with a bearing, the bearing is in interference fit with a bearing seat, the screw rod is in clearance fit with a feed screw nut, the feed screw nut is in threaded connection with a nut inner tube, the nut inner tube is in threaded connection with the spring seat, a tension spring is arranged at the periphery of the nut inner tube, and the two ends of the tension spring are fixedly connected with the bearing seat and the spring seat correspondingly. The car tail gate electric opening and closing device with the straight built-in tension spring has the beneficial effects that the car tail gate electric opening and closing device is mounted on each of the left and right sides of a trunk of a car, a small space is occupied, the spring is built-in, beautiful, and compact, the motor drives the screw rod to rotate to drive the nut inner tube to expand and contract so that expansion, contraction, opening, and closing of the whole device is realized, and electric opening and closing of a tail gate is quickly realized

The invention relates to hardware fittings for electric power circuit connection, in particular to a nested reinforcing yoke plate and a processing method thereof. No riveting and welding are required. The nested reinforcing yoke plate comprises a triangular steel plate and a steel jacket. The steel jacket is nested into the triangular steel plate. The triangular steel plate and the steel jacket are in nested connection, and the problems that welding workloads are high, acid returns from welded joints and the yoke plate strength is lowered by the adoption of the welding mode in the prior art are solved. By means of nested connection, the problems that the base plate strength is lowered and riveting is unfirm due to riveting are also solved. After nesting with the thermal expansion principle is completed, the triangular steel plate and the steel jacket are in interference fit, so that the yoke plate strength is reinforced, and the yoke plate is made more durable in use. By the adoption of the nested connection, the processing method is simpler and faster, cost is reduced, and processing quality can be controlled more easily.

The invention discloses an automatic test system for a high-precision capacitive touch screen, which comprises a base, the upper surface of the base is rotatably connected with a stand column through a bearing, the stand column is in interference fit with a mounting plate, and the lower surface of the mounting plate is fixedly connected with eight groups of adsorption mechanisms for adsorbing detection products; the adsorption mechanism comprises a fixing block with the section being in a concave shape with a downward opening, the fixing block is fixedly connected with the lower surface of the mounting plate, the fixing block is slidably connected with a sliding block, a first spring is fixedly connected between the sliding block and the fixing block, the lower surface of the sliding block is fixedly connected with a functional block, and the functional block and the sliding block are each of a hollow structure. The sliding block is filled with hydraulic oil, and a sliding plate is slidably connected into the sliding block in a damping mode. The device has the advantages that compared with the prior art, the empty driving process of the manipulator is avoided, so that the detection efficiency is greatly improved, meanwhile, the automation degree is higher, levelness detection can be carried out at the same time, and the application range is wider.

The invention discloses a power line dust plug for an electromechanical device. The power line dust plug comprises a baffle and a plug column, wherein the plug column is a cylindrical cylinder, the baffle is an annular baffle, one end of the plug column is fixedly connected with the baffle, an annular supporting piece is disposed in the plug column, an outer ring is disposed on outer side of the plug column, and an inner ring is disposed on the inner side of the plug column. The power line dust plug for an electromechanical device provided by the invention is disposed between the power line and the electromechanical device, and enables an interference fit for the plug column and the electromechanical device and the power line, so that there is no gap between the power line and the electromechanical device, thereby preventing the dust from entering the interior of the electromechanical device through the gap between the power transmission line and the electromechanical device, and improving the dustproof effect of the electromechanical device.

The invention discloses an upper angular contact bearing installation structure in an overspeed test bed host. The structure comprises a casing, a stator, a rotor and an upper angular contact bearing.The stator is fixed in the casing. The rotor is rotatably supported in the stator. The upper angular contact bearing sleeves the rotor. The structure further comprises an upper bearing seat, an upperspring, an upper floating ring and a shaft sleeve ring. The upper bearing seat is fixedly connected with the top of the casing. The upper angular contact bearing is arranged in the upper bearing seat. The shaft sleeve ring sleeves the rotor. The shaft sleeve ring and the rotor are in interference fit. One end of the shaft sleeve ring abuts against the inner ring of the upper angular contact bearing, and the other end extends into the upper bearing seat. The upper floating ring sleeves the rotor. The upper spring is arranged in the upper bearing seat. The top end of the upper spring abuts against the upper floating ring. The upper floating ring abuts against the outer ring of the upper angular contact bearing. The upper angular contact bearing installation structure provided by the invention has the advantages of simple structure, easy disassembly and good sealing effect.

The invention discloses an angle-adjustable LED lamp bracket. Its structure includes an LED power chip, a junction box, a power cord, a spring member, a hoisting support member, a reflector, a lamp housing, an adjustment frame, and an outer frame. It is a rectangular frame structure with a rectangular opening inward, and its left and right sides are provided with circular through openings, the lateral length of the outer frame is less than the longitudinal length, and the left and right sides of the outer frame are provided with spring members, and the rear end of the spring member is connected to the rear end of the frame. The hoisting supports are connected, and the hoisting supports are aluminum alloy parts. The hoisting supports are arranged on the left and right sides of the outer frame. The inner side of the outer frame is movably connected with the lamp housing. The lamp housing is a rectangular three-dimensional structure. The invention is provided with an adjustment frame and adopts a scale sliding adjustment method. When the lamp housing is tilted forward, the inertial sliding of the lamp housing can be prevented, and the adjustment function is realized and the practicability of the bracket is improved.

A supporting roller of a scale breaking withdrawal and straightening machine is used for the scale breaking withdrawal and straightening machine. A space ring is installed on a shaft, the two sides of the space ring are respectively provided with a needle bearing, an outer sleeve is arranged outside the space ring and the needle bearings in an interference fit mode, races are installed in the step position of an inner hole of the outer sleeve and on the two sides of the needle bearings, a thrust roller bearing and a shaft washer are sequentially fixed to the outer side of each race, an O-ring and a first sealing ring are installed between each shaft washer and the shaft, an O-ring and a first sealing ring are installed between each shaft washer and the outer sleeve, gaskets are arranged between the first sealing rings, check rings for holes are clamped in the step positions of the outer side of the inner hole of the outer sleeve, check rings for shafts for preventing the shaft washers from moving axially are fixed into positioning grooves of the shaft, and second sealing rings are installed in shaft shoulders of the shaft. Because the structural form that the needle bearings are used for bearing radial force, the thrust roller bearings are adopted at the two ends to bear axial force, and rigid sealing and rubber sealing are combined is adopted for the supporting roller of the scale breaking withdrawal and straightening machine, the supporting roller is good in manufacturing accuracy, rotation accuracy and abrasion resistance, high in stability in use and reliable in sealing, and meanwhile machining and assembling efficiency and assembling accuracy can be effectively improved.

The invention provides a press-riveting bolt. The press-riveting bolt comprises a screw, a flange and a nut, wherein the screw, the flange and the nut are coaxially arranged; the nut is arranged on the upper side surface of the flange; a sunken hole is formed in the lower side surface of the flange; the screw is arranged in the middle of the sunken hole; and a convex ring is arranged on the side surface of the screw. The press-riveting bolt is provided with the convex ring which is lower than the plane of the flange, and a metal plate is in interference fit with the convex ring by a die, so that the bolt is prevented from falling off from the metal plate; the press-riveting bolt is provided with the sunken hole, a combined deformation part of the metal plate and the press-riveting nut is accumulated in the sunken hole, and the deformation part of the metal plate is contacted with the special-shaped sunken hole, so that the bolt is prevented from rotating; the press-riveting bolt is suitable for connection of various materials and is not influenced by the traditional process; the press-riveting bolt is low in manufacturing cost, few in process influence factors and high in stability; and the press-riveting bolt is suitable for thin plates and high-strength steel plates.