2587 results about "Screw head" patented technology

An intraosseous system and methods for accessing a medullary cavity. The intraosseous system can include an access assembly and an advancement assembly. The access assembly can include an obturator assembly coupled to a needle assembly. The advancement assembly can include a housing having an inner wall and a drive screw coupled to an energy source. The drive screw can include a threaded portion extending from a drive screw head. The threaded portion can extend into the housing. The advancement assembly can further include an advancement nut threadably engaged with the threaded portion of the drive screw. The advancement nut can include an outer surface configured to slide along the inner wall a predetermined distance without rotating. The advancement assembly can further include a socket configured for attachment to the access assembly.

A method can comprise deploying a prosthetic valve with a delivery apparatus, where the prosthetic valve comprises a frame and a rotatable screw connected to the frame, and where the screw comprises a screw head having an annular bore with internal threads. The delivery apparatus is releasably coupled to the screw and can comprise a first shaft and a first head disposed at an end of the first shaft, the first head comprising external threads releasably engaged with the internal threads of the screw head, and a second shaft that is coaxial with and surrounds the first shaft, the second shaft comprising a second head disposed at an end of the second shaft, the second head releasably engaged with an exterior surface of the screw head. Deploying the valve includes radially expanding the prosthetic valve by rotating the screw with the delivery apparatus.

To prevent a failure of a game machine from occurring.SOLUTION: A game machine includes an outer frame fixed to a game island, a front frame openably / closably attached to the outer frame and provided with an opening, an inner frame openably / closably attached to the front frame and openably / closably attached to the outer frame, a game board detachably attached to the inner frame and formed with a game area visible through the opening, and a unit part attached in front of the game board. The unit part is formed a roll-down surface on which a game ball rolls down, an inclination part connecting the roll-down surface and the game area, and a through hole for inserting a screw at a predetermined position on the roll-down surface. The unit part is fixed to the game board by inserting the screw from a front side of the roll-down surface through the through hole and screwing the screw on a front side of the game board. A game ball rolling down the roll-down surface may contact with a head of the screw.SELECTED DRAWING: Figure 73

The present invention relates to the technical field of power lines, and specifically to a high-voltage connection hardware for power lines, comprising a limiting base plate and an upper clamping piece, wherein the upper end of the limiting base plate is fixedly connected with a lower clamping piece, and the limiting base plate and the lower clamping piece are an integrated structure. By designing an integrated anti-dropping unit at one end of a screw head component, the anti-dropping gasket is integrated with the screw head component, ensuring a flexible connection with the clamping piece while avoiding the loss of the anti-dropping gasket, which is convenient for assembly; through the design of the screw limiting unit, not only the anti-dropping of the locking nut and the screw after the lower clamping piece and the upper clamping piece are adapted and installed, but also the limiting storage of the locking nut after the upper clamping piece is disassembled further prevents the screw from falling off, and ensures that the screw and the locking nut are connected to the lower clamping piece when the hardware is not in use, thereby improving the stability and safety of the power line connection, and effectively preventing the nut and the screw from loosening and losing.

The invention relates to the technical field of floor heating, and discloses an assembly type prefabricated floor heating module which comprises an upper prefabricated slab and a lower prefabricated slab matched with the upper prefabricated slab, second connecting strips are embedded into the left end and the right end of the upper prefabricated slab and the left end and the right end of the lower prefabricated slab, and first connecting strips are embedded into the front end and the rear end of the upper prefabricated slab and the front end and the rear end of the lower prefabricated slab. The first connecting strip comprises a square pipe, and a lead screw is arranged in the square pipe. The first connecting strip and the second connecting strip are embedded between the upper prefabricated slab and the lower prefabricated slab which are adjacent to each other, and are meshed in the splicing screw holes in the upper prefabricated slab and the lower prefabricated slab through the screw heads on the first connecting strip and the second connecting strip, so that the prefabricated floor heating modules are spliced together; after the prefabricated floor heating module is laid, the first connecting strip and the second connecting strip cannot be seen from the outside, only one hole needs to be formed between every two adjacent upper prefabricated plates, and therefore the neatness and attractiveness of the prefabricated floor heating module are guaranteed.

The invention relates to the technical field of bearing machining, in particular to bearing ring automatic machining equipment which comprises a supporting plate, a driving device is fixedly mounted at the upper end of the supporting plate, and a turning head for machining a bearing ring is fixedly mounted at the driving end of the driving device. A rotating screw head is twisted to rotate and move in a connecting barrel, the moving rotating screw head drives a rotating ring to move, the rotating ring drives a telescopic support to move, the telescopic support drives a rotating frame to rotate and drives a first rotating head and a clamping jaw to rotate, and the rotating clamping jaw enables a clamping face to incline; therefore, when the bearing ring with the inclined outer side face or the inclined inner side face is clamped, the clamping jaw can have more contact area with the bearing ring, so that the clamping stability is guaranteed, and the clamping face of the clamping jaw can be driven to adjust different angles by rotating the screw head to clamp the bearing rings with different inclined faces.

The invention relates to a housing assembly protected against contact for a module connector, with a housing which comprises a passage opening extending through the housing in a direction of connection, and with a screw with a screw head arranged in the passage opening, where the screw is locked in the passage opening in a pre-assembly position. Such a housing assembly can be assembled quickly and in a simple manner and at the same time is completely protected against contact.

The invention belongs to the technical field of equipment vibration reduction, and particularly relates to a connecting and buffering structural part. The connecting buffer structural member is used for connecting a first member and a second member, and comprises a bolt, the bolt comprises a screw rod and a screw head, and the screw rod sequentially penetrates through the first member and the second member; the force transmission block is arranged on the outer side of the screw rod, and the contact surfaces of the force transmission block and the first component are inclined surfaces which are matched with each other; the buffering body is arranged on the outer side of the screw rod and located between the screw head and the force transmission block.

The invention belongs to the technical field of mechanical fasteners and intelligent manufacturing, and discloses an intelligent bolt system based on embedded torque monitoring and artificial intelligence (AI) analysis and an application method of the intelligent bolt system. According to the intelligent bolt, an inner cavity is formed in a screw rod, a strain gauge is fixed in the inner cavity, and a strain signal is led out to a signal output interface in a screw head through a signal transmission line. And an external data terminal obtains real-time strain data from the interface and converts the real-time strain data into tightening torque by using a calibration relation. And further inputting the torque data into an artificial intelligence analysis platform, analyzing and predicting the fatigue life, the loosening risk and the use state of the bolt through a large language model, deep learning and an expert system algorithm, and giving a maintenance strategy suggestion. According to the method, real-time state monitoring and intelligent decision support can be achieved under the normal service state of the bolt without an external additional sensor, the connection quality, the maintenance efficiency and the safety are greatly improved, and the method is suitable for various fields of aerospace, gas turbines, steam turbines, vehicles, bridges, energy equipment, precision machinery and the like.

A bit holder for holding and driving a screw with a screw head into a fastening base, comprising a clamping region for connecting the bit holder to a driving tool and a bit receptacle for inserting a bit suitable for driving the screw. The bit holder has at least one magnet arranged eccentrically relative to the bit holder with one pole facing the screw head. The at least one magnet is held floating on a magnet holder in relation to a bit held in the bit receptacle, so that the pole face of the magnet can align according to the contour of the screw head in order to hold the screw on the bit holder in such a way that the bit engages torque-locked in a rotary driver contour of the screw head.

Implants, systems, and methods for connecting one or more spinal rods. The spinal connector implants may be used in revision surgeries to extend fixation to adjacent level(s). The implants may be configured for parallel, perpendicular, or in-line connection of adjacent rods or may be secured to a screw head of an existing screw.

The utility model relates to the field of steel box girder high-strength bolt operation, in particular to a multi-degree-of-freedom bolt screwing device which is used for being arranged on a multi-shaft moving support of a high-strength bolt automatic screwing machine so as to execute the bolt screwing action according to a received instruction. The multi-degree-of-freedom bolt screwing device comprises a screwing head main body, a transverse movement driving part and a connecting part, wherein the connecting part comprises a connecting frame, a central rotating shaft, a swinging group and a rotating group. The screwing head main body realizes translation through the movement of the transverse movement driving part; the central rotating shaft supports the screwing head main body to rotate; the swinging group drives the screwing head to radially swing around the central shaft; and the rotating group drives the rotating shaft to rotate or revolve. The integrated design endows the device with the multi-degree-of-freedom movement capacity of translation, rotation, swing and revolution, the capacity of automatically screwing bolts in different directions, angles or shielding positions in a complex space is greatly improved, and the device can be matched with machine vision intelligent recognition and automatic posture adjustment to ensure that the screwing action is rapid and accurate.

The invention discloses motor assembling equipment and an automobile motor assembling method capable of automatically screwing, and relates to the field of motor assembly.The motor assembling equipment comprises a feeding module and a screwing module, the screwing module comprises a mounting plate and a plurality of screwing assemblies, the screwing assemblies are all mounted on the mounting plate, and the screwing assemblies can vertically move; the screwing assembly comprises a screwing head, a screwing bit and a transmission rod, the transmission rod can drive the screwing bit to rotate, the feeding module can convey a screw into the screwing head, and after the screwing head descends to abut against a workpiece, the transmission rod descends and rotates in the screwing head. The position of the mounting block can be adjusted on the plane of the mounting plate, so that the flexibility of the equipment is greatly enhanced, the equipment can adapt to the change of screw hole spacing on workpieces with different specifications, the connecting rod is connected with the transmission rod through the universal joint, and even if the position of the transmission rod is changed due to the movement of the screwing head, the transmission rod can be fixed. And the rotating power can still be effectively transmitted to the transmission rod, so that the screwing function is ensured to be realized.

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

A screw with an improved screw head is provided. The screw may include a shank in between a head and a tip. The head may include a plurality of protrusions provided radially along the head. Each of the plurality of protrusions may include a protrusion wall, a leading wall, a trailing wall, and a bottom wall; the trailing wall may include one single trailing surface, the leading wall may include a plurality of leading surfaces, and the bottom wall may include at least one bottom surface.

To provide a lens device that suppresses performance variation caused by positional changes of an optical element accompanying attachment / detachment of an optical element unit, and ensures replacement workability of the optical element unit.SOLUTION: In a lens device 1 in which an optical unit 100 having a second optical element 2 is attachable to and detachable from a base lens barrel unit 200 having a first optical element 1000, the optical unit 100 includes: a fixing screw 3 that fixes the base lens barrel unit 200 and the optical unit 100; a screw accommodating portion 101 that accommodates the fixing screw 3; and a fixing screw operation hole 13b communicating with the screw accommodating portion 101. A depth of a spot-facing portion 19a provided in the screw accommodating portion 101 is shorter than a total length of the fixing screw 3, and an inner diameter of the fixing screw operation hole 13b is smaller than a diameter of a screw head of the fixing screw 3.SELECTED DRAWING: Figure 4

The utility model discloses a metal hose with a compensation function, which comprises a metal hose main body and connecting pipe joints, a plurality of compensation rings are arranged on the metal hose main body, the connecting pipe joints are arranged at the two ends of the metal hose main body in a threaded fixing manner, and pipe joints are arranged at the end parts of the connecting pipe joints. The integral compensation ring is arranged on the outer side of the metal hose body, thermal expansion compensation can be conducted on the metal hose body through the compensation ring, the protection capacity of the metal hose body can be improved, the protection toughness of the metal hose body can be improved, cracking can be prevented, and the service life of the metal hose is prolonged; mounting heads are arranged at ports at two ends of the metal hose main body, threaded holes are formed in the middle parts of the mounting heads, a connecting head is arranged at one end of the connecting pipe joint, a screw head is arranged at the end part of the connecting head and can be fixed with the threaded holes in a threaded manner, so that the connecting pipe joint is convenient to mount, and a pipe joint is arranged at the end part of the connecting pipe joint.

A safety device is disclosed, consisting of a screw body with a screw head, which is connected to the screw body in one piece and forms a rotary-drive part, and with a thread, which is connected to the screw head in one piece and forms a securing part, and also with a rupture device, which is arranged in a channel of the screw body, wherein a sight glass is accommodated entirely within the channel of the screw body, together with the rupture device, and forms an inspecting device for assessing the state of the rupture device.

A bone fixation system for reconstruction and / or trauma treatment of bones, the bone fixation plate comprising: a bone fixation plate configured and dimensioned for application to a patient's bone, the bone fixation plate comprising an in-use upper surface and an in-use lower surface with at least one opening formed on the upper and lower surfaces to form a passage extending from the upper surface to the lower surface; each passage being defined by inner walls extending from the upper surface to the lower surface, the inner walls having a height extending between the upper surface and the lower surface, the inner wall further comprising: a threaded inner wall portion extending from the upper surface towards the lower surface, the threaded inner wall portion having threads with a thread pitch (PW); and a non-threaded lower inner wall portion extending from a lower part of the threaded inner wall portion towards the lower surface of the bone fixation plate; and at least one bone screw with a threaded screw head having threads with a thread pitch (PH) for engaging and interfacing with the threaded inner wall for variable angle anchoring of the threaded screw head during use.

The invention provides a production process of a high-low tooth screw, relates to the technical field of screw production, and solves the problems of poor skid resistance, low fastening efficiency, unbalanced mechanical properties, insufficient corrosion resistance and the like of a traditional screw through innovative design and process optimization. SCM435 alloy steel is selected, spaced anti-skid teeth are pressed within the range of 270 degrees in the circumferential direction of the head of the screw through a four-station cold header, high-low alternating tooth forms are twisted on the rod portion, the gradient hardness of the surface and the core portion is achieved through isothermal quenching, surface treatment is combined with zinc-nickel alloy electroplating and a polytetrafluoroethylene coating, and the corrosion resistance and the assembly smoothness are improved; full-process intelligent detection is realized through machine vision, three-coordinate measurement and torsion test. The local layout of the anti-skid teeth reduces material consumption and improves meshing efficiency, the high-low tooth form reduces assembly torque and stabilizes pre-tightening force, gradient heat treatment enhances fatigue resistance, the composite coating improves corrosion resistance, and intelligent detection guarantees product consistency.

The utility model discloses a hexagonal flange wood screw head height measuring device, which belongs to the technical field of measuring devices and comprises a bottom plate, a groove body is mounted at the right end of the top of the bottom plate, positioning assemblies are arranged on two sides of the groove body, a screw body is placed between the two positioning assemblies, and a vertical plate is mounted at the left end of the top of the bottom plate. A second electric push rod is mounted at the end, away from the lifting assembly, of the mounting plate, a movable plate is mounted at the output end of the second electric push rod, and a measuring assembly is arranged on the side, close to the screw body, of the movable plate. According to the utility model, through cooperative arrangement of the slide rails, the pulleys, the convex teeth, the positioning plates and the first electric push rod, the first electric push rod stretches out and draws back to drive the positioning plates to move left and right, so that a screw body can be clamped and fixed through the two groups of positioning plates, and the screw body is more stable in the measurement process and does not need to be held by a worker.

The invention relates to a screw assembly torque testing device which comprises a testing base, a nut adapter is detachably arranged on the testing base, a pre-tightening groove is formed in the side wall, away from the installation side of the nut adapter, of the testing base, the depth of the pre-tightening groove is not larger than 0.2 times of the height of the head of a screw, and the inner bottom wall of the pre-tightening groove is a pre-tightening plane; the tightening torque measuring mechanism comprises a torque wrench and a quick tightening wrench which can move in the direction close to or away from the pre-tightening groove, the front and back positions of the torque wrench and the quick tightening wrench can be interchanged, and the two wrenches can rotate around the axis of the screw and are used for tightening the screw; the positioning auxiliary testing mechanism is matched with the screwing torque testing mechanism to realize dual data detection of the screw torque; and the control panel is electrically connected with the screwing torque measuring mechanism and the positioning auxiliary testing mechanism to realize device driving and measured value display. According to the invention, the test precision and efficiency of the static assembly torque of threaded fasteners such as screws are improved, and the test requirements of most of threaded fasteners are met.

Variations on improved pedicle screw coupling assemblies, along with methods for use of such assemblies provide improved functional characteristics over existing devices. A coupling assembly is capable of providing rigid fixed attachment between a pedicle screw fully seated to underlying bone and a member extending between adjacent pedicle screws. The coupling assembly includes a pedicle screw having a threaded shaft and a head portion. The head portion includes a driving feature and a proximally oriented bore having a bore diameter. In one version, the coupling assembly includes a member adapted to extend between adjacent pedicle screws. The member includes a protrusion adapted for insertion into the bore of the pedicle screw, the protrusion having a protrusion diameter that is larger than the bore of the pedicle screw head portion. In another version, the coupling assembly includes a spherical bore in the screw head. Additional implementations are described.

The utility model discloses a pelvic brittle fracture bionic hollow screw manufactured based on the 3D printing technology. The pelvic brittle fracture bionic hollow screw manufactured based on the 3D printing technology comprises a screw body, and the screw body comprises a screw tail, a supporting part and a screw head; a thread, a diversion trench and a microporous structure are arranged on the supporting part; the micropore structure comprises a plurality of point position sets spirally arranged on the supporting part, and the difference between every two adjacent point position sets is one fourth of the circumference. According to the pelvic brittle fracture bionic hollow screw manufactured based on the 3D printing technology, the screw body manufactured through the D printing technology is arranged, a micro-pore structure distributed in a topological configuration mode can be conveniently arranged on the screw body, bone cement can be conveniently spread around the screw body in a more dispersed mode through the micro-pore structure, and therefore the bone cement can be more evenly distributed on the periphery of the screw body. And the micropore structure is beneficial to bone tissue growth, so that the long-term stability of the screw is improved.

The utility model discloses an anti-loosening screw fastening structure easy to manufacture in batches, a plate and a seat are locked through a screw, and the screw comprises a screw head and a screw rod; the top surface of the plate is provided with a round countersink, the bottom of the round countersink is provided with a threaded through hole, and the top surface of the seat is provided with a threaded countersink; an elastic special-shaped gasket is pressed between the bottom surface of the screw head and the bottom surface of the round countersink, and a plurality of anti-skid teeth are rotationally and symmetrically distributed on the bottom surface of the screw head; a positioning groove is formed in the wall face of the round countersunk opening, and a positioning block is arranged on the outer ring of the elastic special-shaped gasket. The elastic special-shaped gasket is a second special-shaped gasket, at least one radial slot is formed in the circumferential face of the second special-shaped gasket in the radial direction of the gasket, and a circumferential slot is formed in the side, in the circumferential direction of the gasket, of the radial slot from the bottom, relatively close to the circle center of the gasket, of the radial slot. Strip-shaped parts separated by L-shaped open seams formed by the radial open seams and the circumferential open seams form elastic warped pieces; the second special-shaped gasket is formed through one-time punch forming of an equal-thickness plate. The cost is low.

An electronic device, etc. that can contribute to improving the ease of removal of a blade from a rack. [Solution] The electronic device comprises a blade having a front plate and a first connector fixed to an electronic board, a rack having a second connector fixed to it that is connected and conductive to the first connector, and a screw for fixing the blade to the rack, wherein the screw has a retaining ring attached to the male threaded portion, the front plate has a through hole through which the male threaded portion is inserted and is sandwiched between the head of the screw and the retaining ring, and an internal plate having a screw hole that screws into the male threaded portion is fixed to the rack, and the head of the screw is screwed into the screw hole to press the front plate against the inside of the rack and insert the first connector into the second connector, and the retaining ring is loosened to remove the screw from the screw hole to press the front plate against the outside of the rack and remove the first connector from the second connector.

The invention provides a single-line lumbar intervertebral disc fibrous ring crevasse suture needle, and belongs to the technical field of medical instruments. According to the suture needle instrument, firstly, through the design that the screw sleeve rod is matched with the screw head, the suture needle sleeve is matched with the suture needle and then the two ends of the suture are fixedly connected to the screw head and the suture needle respectively, when medical staff use the needle instrument, firstly, the screw head is placed into the bone surface on one side of a fibrous ring crevasse, and then the screw head is separated from the screw sleeve rod in the axial direction; then, a suture needle penetrates from one side of the fiber ring crevasse to the other side of the fiber ring crevasse, and suture of the fiber ring crevasse is completed; compared with a suture needle which uses two sutures and the suture fixedly connected with the screw head needs to be knotted with a slipknot, the single-line lumbar intervertebral disc fibrous ring crevasse suture needle has the advantages that the operation is simpler, the suture is firmer, and the problems that in the prior art, the suture needle needs two sutures to be knotted and fixed, and the suture needle is inconvenient to use are solved. The operation is inconvenient; and the cut of the sewed fiber ring is easy to crack again.

The invention discloses a cross layout type cap screwing structure which comprises two clamping arms capable of moving in two directions, the clamping arms are fixed to the two ends of a two-way telescopic assembly respectively, the two-way telescopic assembly is arranged at the bottom of a longitudinal sliding rail, a cap screwing head is arranged on a moving block of the longitudinal sliding rail, the longitudinal sliding rail is arranged on a moving block of a transverse sliding rail, and the transverse sliding rail is arranged on the moving block of the transverse sliding rail. And a cap conveying assembly is arranged at the end part of the transverse sliding rail. The bottle cap containing cavity is arranged to be in a liftable state, when the cap screwing head moves to grab the bottle cap, the bottle cap can be lifted by the containing cavity in advance, in this way, the cap screwing head does not need to move downwards to grab the bottle cap, and the time of the bottle cap grabbing stroke is saved.

The invention provides a self-drilling screw structure and a manufacturing method thereof, wherein the manufacturing method includes: providing screw body, forming drill tail screw rod section, forming concave neck portion, forming drill tail cutting edge and forming thread. The self-drilling screw structure including a screw head portion and a screw rod portion, the screw rod portion is sequentially provided with a threaded screw rod section, a drill tail screw rod section and a drill bit screw rod section, the drill tail screw rod section has a rod diameter of drill tail, a plurality of drill tail cutting edges and a plurality of drill tail chip discharge grooves, the drill bit screw rod section is provided with a concave neck portion, and the drill bit screw rod section is protruded to form a plurality of drill bit cutting edges and the plurality of drill bit chip discharge grooves.

Implantable devices and assemblies that provide a friction fit between a receiver and a fastener, such as a bone screw. A frictional force is applied between the screw head and both a retention ring and a pressure insert, maintaining and stabilizing the orientation of the receiver relative to the screw head before being fixed by a set screw. This mechanism prevents drooping or slipping of the receiver out of alignment when implanted. Additionally, the devices allow for modular assembly before or during spinal fixation, enabling bottom-side loading of the screw head into the receiver. Various screws with different characteristics can be coupled to the receiver body before or after implantation. The frictional force may be facilitated by one or more ridges on the receiver body that engage the pressure insert, which is resiliently urged against the screw head, providing a spring-like compression force.