185 results about "Screw head" patented technology

This utility model discloses an internal hexagonal head screw, including a screw head, a screw rod, and an expansion assembly. The screw head is hexagonal with an internal hexagonal turning groove at the top. A screw rod is fixed to the bottom of the screw, and an expansion assembly is fitted around the screw rod. The expansion assembly consists of an upper fixing ring, a lower fixing ring, and arc-shaped strips. Both the upper and lower fixing rings are fitted around the screw rod, with the upper fixing ring positioned above the lower fixing ring. Several outwardly protruding arc-shaped strips connect the upper and lower fixing rings, and the upper fixing ring is fixed to the screw head. This utility model, by fitting an outwardly expanding expansion assembly around the screw rod, allows the expansion assembly to expand outward during tightening, increasing the friction between the screw and the connected components. This results in excellent anti-loosening performance after tightening, making the screw less prone to loosening.

This invention discloses a spinal endoscopic screw-rod fixation system, belonging to the field of medical device technology. The system includes screws, locking pins, and connecting rods. The screw head has a fixing hole with internal threads on the inner wall and a driving hole at the bottom. The proximal end of the screw forms an arc-shaped mating surface around the fixing hole. The locking pin has external threads matching the internal threads, and a spherical clamping surface is formed on the side of the clamping head facing the connecting block. This invention, through the arc-shaped mating between the screw, locking pin, and connecting block, allows the connecting block to adapt to the screw at multiple angles, facilitating insertion and locking in spinal endoscopy or minimally invasive small-incision environments. The flip-handle mechanism facilitates tightening the locking pin in confined operating spaces and prevents arbitrary disassembly of the locking pin, improving the operational convenience and safety of the fixation system.

The invention relates to a screw (1) comprising a screw head (2) and a screw shaft (3) which has a threaded section B with a thread (6). A measuring device (8) with an extensible measuring strip (9) is arranged along or in the interior of the screw shaft (3). In the process, the extensible measuring strip (9) is arranged in the threaded section B and detects a compression of the screw shaft (8).

The utility model relates to hand formula screw sorting device for solving the technical problem of time -consuming and troublesome artificial screening. Including storage mechanism, feeding mechanism, screening mechanism and collection mechanism, from upstream to downstream each fixed plate and each movable plate's upper end is in turn higher, movable step board includes transmission block and interval fixed on transmission block many movable plates, movable plate and fixed plate one -to -one cross sliding fit, transmission block drives and linear reciprocating motion along the up-down direction through cam mechanism, the upper end surface of fixed plate and movable plate all are the inclined plane that tilts downward to the downstream direction, screening mechanism and feeding mechanism butt joint, including the multiple screening unit that interval sets along the up-down direction, screening unit includes the screening inclined slide that sets down to the downstream inclination, screening inclined slide has the width of unloading channel, the width of unloading channel is less than the diameter of corresponding screw head and is greater than the outer diameter of next level screw head, the width of unloading channel of each screening unit decreases from top to bottom.

This utility model discloses an automatic screw fastening machine for LED display cabinets. In use, the cabinet is continuously placed above a feeding belt. After the feeding belt reaches the center of the two side clamping plates, a first cylinder drives a connecting block to move. This causes the connecting block, in conjunction with a connecting rod, to move the two side connecting plates. A fixed rod, in conjunction with an adjusting rod, rotates the first and second support rods on both sides, causing the clamping plates to move. Simultaneously, the two side clamping plates move towards the center, clamping the cabinet in a centered position. This prevents inaccurate positioning due to potential shifting or tilting during transport, which could lead to the screw head not aligning with the screw holes, resulting in stripped screws, loose screws, or scratches on the cabinet surface. During subsequent screw fastening, a drive assembly in conjunction with a moving assembly allows for arbitrary movement of the screw fastening mechanism, enabling screw fastening at different locations on the cabinet surface.

The utility model relates to oxygen humidification bottle electric control board mounting technical field, especially, install convenient ward oxygen humidification bottle electric control board, include: electric control board body, mounting plate, link pipe, oxygen humidification bottle, distribution box, oxygen butt joint pipe, mounting hole, mounting plate installs on electric control board body, link pipe is fixed on electric control board body through mounting plate, oxygen humidification bottle is connected with link pipe, the utility model discloses the bolt screw head part and the stem part of medical bed head are first inserted into the round hole, the stem part moves to the upside of L -shaped hole along the path of L -shaped hole, can release electric control board body, the screw head part of bolt is clamped in L -shaped hole, so that the bolt does not separate from L -shaped hole, this mode does not need to repeatedly rotate bolt procedure for the mounting and removal of electric control board, only need hole position butt joint to support electric control board body on the bolt, and the installation mode is simple and easy to operate, thereby more practical, and the taking and placing of electric control board will be more convenient and fast.

The application discloses a kind of automatic screwing equipment of elastic body bottom screw, including rotary handling mechanism, translation clamping mechanism, screwing mechanism and visual guidance mechanism, and elastic body is gripped from feeding station by rotary handling mechanism and is transferred to translation clamping mechanism, and translation clamping mechanism clamps elastic body and is transported to screwing station, and visual guidance mechanism identifies the attitude of the slot of elastic body bottom screw, and guides the accurate alignment of the screwing head of screwing mechanism;After alignment is completed, screwing mechanism automatically screws bottom screw on elastic body.The application adopts modular design and system integration, realizes the automatic feeding of elastic body, accurate positioning, visual alignment and the full automation of bottom screw screwing, realizes efficient production;The equipment is compact in structure, stable in operation, convenient to maintain, and can be suitable for the automatic assembly needs of various specifications of elastic body, effectively guaranteeing production rhythm and product quality.

This invention relates to the field of hydrogeology, specifically to a groundwater sampling device for hydrogeology. The device comprises multiple vertically arranged splicing rods, each with a threaded hole at its top and a screw head fixedly connected to its bottom. The screw head engages with the adjacent threaded hole. A circular hole is formed on the top surface of a sleeve plate, which slidably engages with the outer wall of the splicing rod. A motor box is located on one side of the sleeve plate. In this invention, the splicing rods are sequentially spliced ​​and inserted into a well. A welded metal bracket secures the splicing rods to the wellhead. The sleeve plate is lowered to the aquifer using an automatic winch. An electric push rod moves the sampling mechanism, allowing it to drill into the aquifer through the well pipe's filter holes. The sampling mechanism then samples the water flow within the aquifer, improving the accuracy of sampling a single aquifer. After sampling, a filling mechanism can backfill the aquifer with soil, facilitating sampling operations for users.

This utility model discloses a robustly installed PCBA structure and server. The robustly installed PCBA structure includes a PCBA board and mounting screws. The PCBA board has mounting holes. Each mounting screw, from one end to the other, includes a threaded section, a tapered guide section, and a screw head. The tapered guide section passes through the mounting hole to secure the PCBA board to the server. The threaded section is used for threaded connection to the server. The tapered guide section is used to push and correct the position of the PCBA board. The screw head presses against the PCBA board. An elastic sealing ring is fitted around the outer periphery of the mounting screw, located between the outer periphery of the mounting screw and the inner periphery of the mounting hole. This utility model facilitates installation and ensures stability after installation.

The utility model discloses a building electromechanical pipeline laying structure specifically related to pipeline laying structure technical field, including pipe support and derrick, the inside of pipe support is provided with sliding adjustment type separating component, and sliding adjustment type separating component includes sliding slot, sliding block, separating rod, bottom groove, screw rod, screw head, cross groove and screw hole, the utility model discloses be provided with sliding block and separating rod, and the surface of sliding slot is located at the top of pipe support, when using, can insert sliding block to the inside of sliding slot, and the screw rod is inserted into the screw hole of sliding block bottom along the bottom groove of bottom side, after slightly rotating and connecting, with the aid of screw rod, can slide along sliding slot, adjust the position of sliding block, with the aid of the separating rod of sliding block top, carry out the separating operation of pipeline, after finishing position adjustment, again, the screw rod is tightened, and the screw head of screw rod bottom end is pressed on the surface of pipe support bottom end, and the position of auxiliary sliding block, separating rod is fixed, can, realize the separating function when this building electromechanical pipeline laying structure uses.

This invention relates to a disc brake (1) for commercial vehicles, the disc brake having a pneumatic brake cylinder (4), a brake disc, a brake caliper (3), a brake application device (7), and brake pads (8). The brake caliper (3) is engaged with the brake disc, and the brake application device (7), actuated by the brake cylinder (4), is arranged in the brake caliper (3). During braking, the brake pads (8) are pressed against the brake disc from both sides by the brake application device. An extendable and retractable piston rod (6) of the brake cylinder (4) engages with the brake application device (7), and the brake caliper (3) is secured by a fixing device (2). The device (2) is detachably fixed to the brake cylinder (4). It includes a screw (11a, 11b) with a screw head (12a, 12b), a screw shank (13a, 13b), and an external thread formed on the screw shank (13a, 13b). The device also includes at least one internally threaded hole (14a, 14b) formed in or on the brake cylinder (4). The screw shank (13a, 13b) is externally threaded into the at least one hole, and the screw head (12a, 12b) is locked onto the corresponding surface (15a, 15b) of the brake caliper (3). According to the invention, the centering device is designed and configured to center the pneumatic brake cylinder (4) and the brake caliper (3) relative to each other independently of the threaded connection between the at least one screw (13a, 13b) and the at least one hole (14a, 14b).

The utility model belongs to glass bottle sealing equipment technical field, concretely relates to a screwing machine head of cap screwing machine. A screwing machine head of cap screwing machine, including main body cylinder, the lower position of main body cylinder is equipped with telescopic ring, and the lower end of telescopic ring and main body cylinder is telescopic type connection, the lateral wall of main body cylinder is equipped with inlet pipe, the inside of main body cylinder is equipped with a plurality of L-shaped supporting legs, and L-shaped supporting leg is evenly arranged in annular array, the inner wall of main body cylinder is equipped with a plurality of long holes, and L-shaped supporting leg and a plurality of long holes are one to one, and the middle segment position of L-shaped supporting leg is articulated in long hole, and the end of L-shaped supporting leg is connected with reset spring no. One, and the other end of reset spring no. One is connected in the cylinder wall of main body cylinder, the upper end of main body cylinder is connected with telescopic cylinder, and the telescopic type nested connection between telescopic cylinder and main body cylinder is telescopic type nested connection, and reset spring no. Two is arranged between telescopic cylinder and main body cylinder, and the screwing rod is penetrated in telescopic cylinder, and the screwing rod is penetrated into the inside of main body cylinder.

This utility model discloses a rotary display mechanism for a digital pressure gauge, specifically relating to the field of digital pressure gauge technology. It includes a gauge head, a fixed tube fixedly connected to the bottom of the gauge head, an insert tube inserted into the bottom of the fixed tube, a limit plate fixedly connected to the bottom of the insert tube, a screw head fixedly connected to the bottom of the limit plate, and a connecting threaded tube fixedly connected to the bottom of the screw head. This utility model first rotates the gauge head to compress the toothed groove against the compression plate, thereby compressing the spring until one side of the compression plate meshes with the other side of the toothed groove. This allows for adjustment of the gauge head's display angle, facilitating easy reading of pressure values ​​in various complex installation environments, improving ease of use and flexibility. Furthermore, the cooperation between the sealing groove and the guide tube with the sealing tube effectively prevents external impurities from entering and internal media leakage, protecting the internal components of the digital pressure gauge, ensuring the accuracy of measurement data, and extending the equipment's service life.

The utility model provides a cigarette packer strip package forming wheel dismounting tool for carrying out dismounting to strip package forming wheel end screw, and strip package forming wheel end has screw installation counterbore for screw head sinking, and the dismounting tool includes lengthened rod, force bar, lengthened rod includes lengthened rod body, and one end of lengthened rod body is equipped with the outer hexagonal head that is in line with the internal hexagon hole of screw head, and the other end of lengthened rod body is connected with the force bar perpendicular to lengthened rod body, and lengthened rod body is slidably sleeved with support ring, and support ring is step ring, and the small head end of support ring is towards the outer hexagonal head and is in line with the screw installation counterbore of strip package forming wheel end. The utility model has the advantages that compared with prior art: through support ring to lengthened rod whole course support, avoid strip package forming wheel to appear the situation of skidding when dismounting and installing, make the maintenance convenient and fast, save maintenance time.

The present invention relates to a rotor (2) of an electrical machine (1) comprising: - a stack of laminations (4), - a first retaining plate (5) and a second retaining plate (6), - retaining screws (7), each retaining screw being inserted into an insertion hole (8) and comprising a screw head (9), a shank (10) and a threaded portion (11), the stack of laminations being clamped between the first and second retaining plates by the screw head bearing against the first retaining plate and by a bolt (12) tightened around the threaded portion against the second retaining plate, the shank having a first stabilizing portion (13) of first diameter (D1) and an extension portion (14) of second diameter (D2), the first diameter being larger than the second diameter. Figure for the abstract: Fig. 1

This invention provides an internal fixation device for cancellous bone, belonging to the field of medical device technology. It includes a fixation plate with a plurality of screw holes and positioning holes arranged in a linear array on its top outer wall; and a guide assembly connected to the fixation plate, used to guide the hollow self-drilling screws. By incorporating the guide assembly, this invention not only guides the hollow self-drilling screws, preventing them from deviating from their pre-operatively assessed position during insertion, thus affecting their fixation effect on the fracture site, but also holds the screws during the guiding process, preventing the screw head from tilting and protruding, which could cause skin irritation and affect postoperative recovery.

A self-locking screw includes a screw body and a screw head. The screw body includes a screw shank, a screw tip, a thread, serrations, and protrusions. The screw tip is a square pyramidal shape formed by four flat beveled surfaces. The serrations begin at the connection between the screw shank and the screw tip, spiraling upwards to the middle section of the screw shank with a helix angle of 15°. The crest of the serrations is lower than the crest of the thread. The protrusions are located on the screw shank, with multiple protrusions spiraling upwards from the side near the serrations to the end of the thread away from the screw tip, with a helix angle of 60°. The protrusions are hemispherical, with a flat plane at the end away from the screw shank surface, the height of which is less than the crest height of the thread. The invention also provides a die for cutting a self-locking screw, wherein a stationary die and a movable die form the protrusions through recessed points, and the serrations are formed by the serrations.

Adjustment device (22) for positioning a trim part (12) in a motor vehicle, comprising a projection (24) extending from a substructure (18) of the trim part (12), an internal thread (34) provided on the projection (24), an adjusting screw (28) passing through the projection (24) and screwing into the internal thread (34), a support projection (30) extending from a vehicle segment (32) to be covered with the trim part (12) and a support thread (38) provided on the support projection (30) for screwing in the adjusting screw (28), wherein the adjusting screw (28) has a reduction (44) extending through the projection (24) and the internal thread (34) between an external thread (36) that can be screwed into the internal thread (34) and the support thread (38) and a screw head (42).

Screw with a screw shank with right-hand thread and a screw head, wherein the screw head has a central drive profile for receiving a standard tool and comprises a peripheral, cylindrical head area with an external left-hand thread onto which at least one annular extension element with an internal left-hand thread can be screwed, wherein the extension element is designed to increase the bearing surface of the screw head and simultaneously provides a tool receptacle that can be actuated with the same standard tool as the central drive profile.

A module mounting system (42) for mounting said modules (42) on a surface covered with corrugated metal sheets (TAN), said system comprising: - at least one support piece (4) associated with a fixing screw (16), - at least one module support rail (2). The at least one support piece (4) has a base (8) having a face referred to as the lower face (14) and an opposite face intended to support the head of the fixing screw (16), and a support (12) for the at least one module support rail (2). The module support rail (2) is shaped such that, when mounted on the at least one support piece (4), it has a portion bearing against the support (12) of the at least one support piece (4) and a portion that at least partially overhangs the head of the fixing screw (16). Figure 2

The design relates to a fixture for a high-performance liquid chromatography (HPLC) capillary screw head, which has an opening for inserting an HPLC capillary when tightened by twisting, is formed to transmit rotation from a screwdriver to the HPLC capillary screw head, and the HPLC capillary screw head is fixed on top of the HPLC capillary. No protection is sought for the color.

The utility model discloses a kind of liquid cooling plate test tool, including roof rack, detection structure, baffle and liquid cooling plate, liquid cooling plate is equipped on detection structure, the upper end of baffle is fixedly connected with the upper portion of the side end of detection structure, and the upper end of baffle is fixedly connected with roof rack;Detection structure is used for the limiting guide of liquid cooling plate, can simultaneously carry out the sealing test of liquid cooling plate, liquid cooling plate is guided to support plate by guide roller, and butt joint screw head is communicated with liquid cooling plate, by air pump, communication pipe guide gas, carries out pressurization test, and the acquisition of data is carried out by pressure gauge, the detection structure includes fixed base, air pump, communication pipe, pressure gauge and butt joint screw head, fixed base is installed with electric control hydraulic push rod, electric control hydraulic push rod front end telescopic connection is limited to link plate, and the side end of limit link plate is equipped with propulsion frame, and propulsion frame is fixed with support plate.The utility model is liquid cooling plate test tool, and the purpose of liquid cooling plate test is realized by the setting of structure.

The invention relates to an electromechanical fastening and unfastening mechanism operable through electromagnetic induction, direct electrical connection, or manual engagement. The mechanism comprises a cylindrical body having spiralling protrusions that enable axial displacement upon rotation, and a screw head including a central head fixed to the body and a rotatable outer ring supported by a bearing. The outer ring houses an electromagnetic receiving coil configured to receive energy from a transmitting coil of a specialized screwdriver. A motor located in the central head converts the received electrical energy into rotational motion to tighten or loosen the screw. The screw further includes tool-engagement grooves for optional manual operation. The system also supports direct wired activation and may operate multiple screws simultaneously when placed within an electromagnetic field. Certain embodiments include an internal battery and control circuitry for remote operation.

This provides a screw joint configuration that includes a retainer function for screws and also allows for positional adjustment of the two components. [Solution] A screw joint arrangement comprising a first member having one screw receiver, first and second threaded bore portions, a second member having a bore with an unthreaded bore portion separating the threaded bore portions, and a screw shaft having a screw head and a threaded portion. The first member is positioned next to the second member with the first threaded bore portion in close proximity to the first member. The screw joint arrangement can be set between a first state in which the second member is fixed to the first member and a second state in which it is movable by rotation of a screw. In the first state, one of the screw receivers and the bore are aligned and the screw shaft passes through at least one of the screw receivers and extends into the bore with the threaded portion screwed into the second threaded bore portion so that the first member is clamped between the screw head and the second member.

The invention relates to a mechanical high current connection clamping screw device (12) for an electrical high current connector (10), in particular for the automotive sector, having a clamping screw (200) which extends in the axial direction (Ar) of the clamping screw device (12) and is divided into a rotatable screw head (210), a screwable screw body (220) and preferably a screw foot (230), wherein the screw head (210) comprises on the outside an electrical insulation (212) which comprises an electromagnetic shield (214) and / or a seal (216).

This utility model belongs to the technical field of building materials, specifically relating to a precast concrete beam mold, including a base plate, side plates, and a sealing plate. Each side of the sealing plate has a buckle fixed at its midpoint along its width direction. Each buckle has a slot, the opening of which faces away from the sealing plate. Each of the outermost sides of the side plates along their length direction has a screw hinged to its midpoint. The tail of each screw is threaded with a nut, and the screw can engage with the corresponding slot of the buckle on the sealing plate. The buckle is secured to the sealing plate and side plate by tightening the nut between the nut and the screw head. This utility model solves the problem of grout leakage caused by lateral pressure during concrete pouring, improves overall sealing and stability, ensures the dimensional accuracy and surface quality of the concrete beam, meets the assembly requirements of building structures, and helps guarantee the strength and durability of the concrete beam.

The utility model discloses a street lamp mounting structure, it includes installation base, installation support and street lamp head, this installation support fixedly connected on this installation base, this street lamp head fixedly connected on this installation support, the middle part of this installation base is recessed with connecting screw groove, the bottom of this installation support is equipped with connecting screw head, and the screw thread cooperation connection between this connecting screw head and this connecting screw groove, this street lamp head includes street lamp casing, the rear end of this street lamp casing is recessed with fixed screw groove, the upper end of this installation support is equipped with fixed screw head, and the screw thread cooperation connection between this fixed screw head and this fixed screw groove. The street lamp mounting structure modularization structure design of utility model, easy to install and dismount, maintain easily, and the stability and durability of whole are strengthened to the screw thread connection structure, and the integration of light source lamp board, transparent lamp shade, solar panel, battery, improves the independence and environmental protection performance of lighting system.