53results about How to "No loosening problem" patented technology

The invention relates to a connector for shakeproof threaded connection, which comprises a plug and a socket, wherein the plug comprises a plug shell; a connection nut with an inner thread is rotationally arranged outside the plug shell; the socket comprises a socket shell of which the inserting-matching end is provided with an outer thread; one side of the connection nut positioned at the inserting-connecting end of the plug is provided with a stepped hole with a big outside and a small inside; a large-diameter segment of the stepped hole is provided with a clamping nail; the inner thread of the connection nut is arranged in a small-diameter segment of the stepped hole; an anti-loosening mechanism preventing the connection nut from rotating reversely and loosening is arranged between the connection nut and the plug shell; the inserting-connecting end of the socket shell is a stepped shaft corresponding to the stepped hole; the outer thread on the socket shell is arranged in the small-diameter segment of the stepped shaft; the large-diameter segment of the stepped shaft is provided with a spiral groove; the termination end of the spiral groove is provided with a positioning groove deflecting towards the outer thread; the inserting-connecting end of the socket is provided with an inserting-connecting cavity; the bottom of the inserting-connecting cavity is provided with an elastic piece in corresponding push-press fit with the inserting-connecting end of the plug shell.

The invention relates to a servo punching main transmission device of a numerical control turret punch press. The servo punching main transmission device comprises a crankshaft, a connecting rod, a punch and a servo motor. One end of the crankshaft is mounted on a supporting plate below a bottom plate through two self-aligning roller bearings, the upper end of the connecting rod is connected with the crankshaft through a cylindrical roller bearing, and the lower end of the connecting rod is connected with the punch through a hinge pin. The other end of the crankshaft is connected with a rotor of the servo motor through an expanding sleeve, and the punch is placed inside a guide holder below the supporting plate. The servo punching main transmission device of the numerical control turret punch press is simple and compact in structure, high in transmission efficiency, convenient to dismount and mount, small in noise, small in loss and saving in energy.

The invention discloses an integrated motor end cover which comprises a motor end cover and an executive device end cover. A boss is arranged on the motor end cover, and a seam allowance is formed in the executive device end cover. The motor end cover and the executive device end cover are of an integrated structure, and the motor end cover and the executive device end cover are connected into a whole through a connecting body. The integrated motor end cover is further characterized in that the center axis of the boss on the motor end cover is not coaxial with the center axis of the seam allowance in the executive device end cover, and a plurality of reinforcing rib plates are arranged between the motor end cover and the executive device end cover. The integrated motor end cover is high in structural strength, and the problems that a fit clearance exists between the motor end cover and the executive device end cover, and a fastener loosens are solved.

The invention relates to a connector, comprising a connector shell, wherein a cavity penetrating through the front and back ends is arranged in the connector shell, an insulator is arranged in the cavity, the inside cavity wall of the connector shell is provided with a rectangular locating slot in which a sheet locating plate is correspondingly arranged, the sheet locating plate comprises a main plate body provided with a spring piece, the spring piece is provided with a fixed end and a free end, the fixed end is connected with the front part of the main plate body, the free end overhangs towards the back end of the main sheet body and inclines to the insulator, and the free end of the spring piece is cooperated with the positional step surface arranged at the end part of the insulator in a pushing stop manner. In the invention, the connector utilizes a sheet locating plate to fix the insulator with the connector shell, and the back end of the sheet locating plate is very thin, thus only a rectangular locating slot with shallower depth needs to be arranged on the connector shell to mount the sheet locating plate on the connector shell, therefore, the sheet locating plate can be utilized to fix the insulator even if the wall thickness of the connector shell is thinner.

The invention discloses a method for examining loosing of iron tower bolts. The method combines the iron tower vision measurement technology with theoretical calculation to predict loosing of bolts, and adopts the vision measurement method to measure vibration of iron towers. By adopting the non-contact method, potential safety hazard caused by iron tower climbing measurement is avoided, natural wind is utilized as the power source, and the method is time-saving and labor-saving as compared with artificial iron tower climbing cable-lanyard measurement.

The invention discloses a high precision gatage limiting device. The high precision gatage limiting device comprises a shell, and an input shaft, an absolute value encoder, a driving gear, a driven gear, a transmission screw, a sliding rod guide rail, a sliding block and a limiting switch which are arranged in the shell; the outer end of the input shaft is fixedly connected with a power output shaft of a winding hoist, and the inner end of the input shaft is connected with the absolute value encoder; and the driving gear flexibly sleeves the output shaft, the driven gear flexibly sleeves the transmission screw, the driving gear and the driven gear are engaged with each other, the sliding block sleeves the sliding rod guide rail, and the sliding block is fixedly connected with a screw sliding block on the transmission screw, and the limiting switch matched with the sliding block in contact is fixedly arranged on the side part of the sliding rod guide rail in the shell, namely when the sliding block overlaps with the upper part and the lower part of the limiting switch, a pressing handle of the limiting switch is pressed by the sliding block. According to the high precision gatage limiting device, the gear transmission structure is adopted to achieve horizontal sliding limiting, and the problem that measurement is not accurate due to loose of an original cam structure is avoided.

The invention discloses a tee joint check valve which comprises a tee joint basic body, a flexible valve core, flanges and a sealing retaining ring; the two flanges are respectively connected with two ends of the tee joint basic body in a welding mode to form into a circular groove which is matched with the sealing retaining ring; the sealing retaining ring is inserted into the circular groove; and the flexible valve core is embedded into the tee joint basic body and can be formed into a sealing surface with the sealing retaining ring in a meshing mode. Compared with the prior art, the tee joint check valve has the advantages of effectively avoiding metal deformation caused by welding due to the fact that the sealing retaining ring is inserted into the circular groove which is formed by the flanges and the tee joint basic body; being convenient to replace the flexible valve core and saving flexible flanges and sealing rings; and causing no looseness problem due to the fact that the flexible valve core is stable and reliable.

The invention provides an implant for fixing an orthopedic prosthesis and an acetabular cup prosthesis. The implant comprises a head end and a tail end, wherein the head end is provided with a top anda bottom, the thickness from the bottom to the top decreases progressively to enable the implant to enter a preset area, and the ratio of the maximum width to the maximum thickness of the implant isgreater than 1.155. The implant is in a thin shape on the one hand and can reduce bone defects during implantation; and on the other hand, punching holes in an acetabulum and measuring the depth of the holes are not needed, and the implant can be inserted without alignment. The operation process of fixing the acetabular cup prosthesis is simplified, and the problem of loosening of the acetabular cup prosthesis caused by inaccurate screw implantation position does not occur.

The invention relates to an shock-proof check connector, which comprises a connector shell and a connecting nut arranged outside the shell and a check mechanism arranged between the connecting nut and the connector shell for preventing the connecting nut from rotating backward and becoming loose, wherein the check mechanism comprises a circle combining snap spring, an elastic ratchet ring and a baffle plate, which are compactly arranged between the connecting nut and the connector shell along an axis in turn; a retainer ring with an L-shaped axial section is sleeved outside the circle combining snap spring; the retainer ring is in rotation-stopping fit with the circle combining snap spring; the circle combining snap spring is arranged on the connector shell in a clearance manner and is in rotation-stopping fit with the elastic ratchet ring; an elastic suspension arm extending circumferentially is integrally arranged on the outer circle of the elastic ratchet ring; the suspended end of the elastic suspension arm is provided with a raised gear rising outward radially; and a ratchet in corresponding unidirectional meshing with the raised gear is arranged in the connecting nut. The connector can effectively perform checking and is suitable to be used in environments with shocking.

The invention discloses a saddle terminal and a switch socket, relates to the technical field of electrical switches and solves the problem of the prior art that as connection sheets easily skew during wiring, poor contact occurs between a moving contact and stationary contact of a switch. The saddle terminal comprises a saddle terminal body and a stationary contact; the saddle terminal body includes a first bent portion and a second bent portion; the first bent portion is of square cavity structure; a fastener is mounted on the first side of the first bent portion; the second bent portion covers an opening in one end of the first bent portion and is connected with the first bent portion; the stationary contact is fixed to the second bent portion.

The invention relates to an electrical connector. The electrical connector includes a shielding assembly having a shielding ring, the shielding ring includes a shielding ring body whose axis extends along a front-back direction, the front end of an inner hole of the shielding ring body has a shielded wire connecting hole segment for insertion of a rear end wire pressing segment on a corresponding hold-down ring in an anastomotic manner from front to back to be in contact connection with a corresponding shielded wire, the shielded wire connecting hole segment is of a flaring structure whose caliber gradually largens from back to front, and at least two wire pressing deformation grooves whose lengths extend along a front-back direction and front ends extend to a front end face of the shielding ring body are arranged at an interval along a circumferential direction on a hole wall of the shielded wire connecting hole segment. The electrical connector provided by the invention solves the problem in the prior art that the hold-down ring cannot elastically press a shielding layer.

The invention discloses a vibration-prevention motor seat. The vibration-prevention motor seat comprises a fixed seat, support seats and support legs, wherein the support seats are welded with a lowersurface of the fixed seat, connection plates are welded with an upper surface of the fixed seat, a plurality of fixed holes are formed in the connection plates, two connection plates are connected via a first bolt, at least two fixed seats are hinged via a hinge, an accommodating cavity for foxing a motor is formed, a plurality of support legs are arranged between a side surface of the fixed seatand the support seats, upper ends of the support legs are fixed on the side surface of the fixed seat by second bolts, a gap is formed between the second bolts and inner walls of the support legs, atleast two first expansion cushion blocks and at least two second expansion cushion blocks sleeve parts, arranged in the support legs, of the second bolts and are arranged in an extrusion and staggered way. By the vibration-prevention motor seat, the problem that a fixed position of the motor seat is easy to get loose due to vibration of the motor in the working process during application of the motor seat in the prior art so as to affect fixing stability of the motor is solved.

The invention relates to a shielding ring and a shielding assembly using the same. The shielding ring includes a shielding ring body whose axis extends along a front-back direction, the front end of an inner hole of the shielding body has a shielded wire connecting hole segment for insertion of a rear end wire pressing segment on a corresponding hold-down ring in an anastomotic manner from front to back to be in contact connection with a corresponding shielded wire, the shielded wire connecting hole segment is of a flaring structure whose caliber gradually largens from back to front, and at least two wire pressing deformation grooves whose lengths extend along a front-back direction and front ends extend to a front end face of the shielding ring body are arranged at an interval along a circumferential direction on a hole wall of the shielded wire connecting hole segment. The shielding ring that can elastically press a shielding layer by cooperating with the hold-down ring and the shielding assembly using the shielding ring are provided by the invention.

The invention relates to the technical field of toys and particularly relates to a processing technology of a movable joint of a toy. The movable joint of the toy is composed of more than two components, and the components are mutually matched to enable two components to rotate relatively and prevent the two components from loosening; all the parts are of an integrated injection molding structure, melting points of materials forming all the parts are different, the injection molding sequence of all the parts is sequentially carried out according to the melting points from high to low, and the parts subjected to later injection molding are formed by secondary injection molding on the basis of the parts subjected to previous injection molding; and difference between the lowest melting temperatures of the two adjacent injection molding materials is 20-300 DEG C. According to the method, the toy movable joint is machined in a repeated injection molding mode, compared with the prior art, manual assembly is not needed, and consistency of tightness of products machined in the same batch through an injection mold is good.

The invention discloses a connector, which belongs to the display field. The connector comprises a base, a connection terminal and a cover plate. The cover plate is arranged at the top part of the base. The base and the cover plate cooperate to form an empty cavity. The connection terminal is arranged in the empty cavity. The side wall of the base is provided with an opening used for a flexible circuit board's terminal to extend into the empty cavity. The first side edge of the cover plate and the base are provided with position limiting structures at corresponding positions. The position limiting structures are used to restrict the first side edge of the cover plate to move between the first position and the second position wherein the first side edge is the side edge of the cover plate located at the upper part of the opening. When the first side edge is located at the first position, the first side edge adheres to the base closely; and when the first side edge is located at the second position, a clearance is provided between the first side edge and the base; and in addition, the position limiting structures are used to provide suppression force when the first side edge moves from the first position to the second position.

The invention discloses a rapid folding mechanism of a bicycle. The rapid folding mechanism of the bicycle comprises a bicycle rear frame, a movable steel tube and a pressing head; an upper rotating sleeve is fixed on one side of the bicycle rear frame; a lower rotating sleeve is fixedly connected to the upper rotating sleeve through the movable steel tube; a movable column is arranged at the center of the movable steel tube; a return spring is mounted on the external surface wall of the movable column; a backing plate is connected to one side of the movable column in a sleeving manner; a rubber sleeve is welded on one side of the backing plate; the pressing head is mounted on the other side of the rubber sleeve; a rotating shaft is arranged at the center of the pressing head; an anti-skidhole is formed in the external surface wall of the pressing head; a locking buckle is mounted above a fixing arc plate; and a fixing plate is arranged on one side of the locking buckle. According tothe rapid folding mechanism of the bicycle, the folding mechanism is compactly structured and convenient to use; and moreover, as the return spring, the backing plate and the rubber sleeve are arranged on equipment, the return spring guarantees the safety of the connection, and the backing plate and the rubber sleeve guarantee the stability of the mechanism during using.

The invention provides a courtyard outer overhanging glass guard bar mounting structure. The courtyard outer overhanging glass guard bar mounting structure comprises a guard bar fixedly mounted on a ground base layer, the guard bar comprises a handrail and a glass plate, the handrail comprises an inclined rod which extends in a slant manner, one end of the inclined rod is fixedly connected with the handrail, the other opposite end of the inclined rod is fixedly connected with an embedded part, the cross section of the embedded part is in a U shape, the embedded part is fixedly embedded in theground base layer, the structure can be suitable for mounting of some areas with large limiting, and stability of mounting of the handrail in the area is ensured.

The invention discloses a fixing method and a fixing structure of an optical lens in a laser system. A lens frame and optical lenses are included, the optical lenses are installed on the lens frame, abonding pad is arranged between the lens frame and the optical lenses, and a metal layer is arranged at a position where the optical lenses and the bonding pad are contacted. A roughening treatment layer is arranged on a surface of the metal layer, and the metal layer can make contact with a welding flux in a larger area in a welding process so that firmness of the metal layer and the welding flux is improved. A welding mode is adopted to carry out fixation so that a problem of loosening of the optical lens relative to a threaded pressing mode can be avoided. Compared with an adhesive adoptedin the prior art, the welding flux does not volatilize so that a surface of the optical lens, a crystal surface and the like in a sealed laser cavity can be prevented from being polluted, laser performance is ensured, and meanwhile, the adhesive cannot be attached to a light-transmitting surface of the optical lens due to misoperation in an operation process.

The invention provides an electronic centrifugal switch detection device. The technical problem that the existing electronic centrifugal switch detection means is complex and low in detection precision is solved. The electronic centrifugal switch detection device has a shell. An ampere meter, a start button and a stop button are arranged on the surface of the shell. An external power interface, amotor cable interface and a motor power interface are led out of the shell. A detection circuit is arranged in shell, and the detection circuit is electrically connected with an electronic centrifugalswitch. The detection circuit comprises an operation relay, a brake relay and a time relay. The operation relay is connected in series with a normally closed contact of the brake relay, and is connected in series with a normally open contact of the start button and a normally closed contact of the stop button. The brake relay is connected in series with a normally closed contact of the operationrelay and a contact of the time relay, and is connected in series with a normally closed contact of the start button and a normally open contact of the stop button. The electronic centrifugal switch detection device can be widely applied to the technical field of centrifugal switch test.

The invention relates to a slack-preventing connector comprising a connector casing. A connecting screw cap is assembled outside the connecting casing; a slack-preventing mechanism for preventing the connecting screw cap from reversing and slacking is arranged between the connecting screw cap and the connector casing and comprises a doubling-up jump ring, an elastic ratchet ring and a baffle which are pressed between the connecting screw cap and the connector casing along the axial line in sequence; the doubling-up jump ring is in interference passing installation with the connector casing and is in check swing fit with the elastic ratchet ring; an outer ring of the elastic ratchet ring is integrally provided with an elastic cantilever extending along the circumferential direction; convexteeth protruding outwards along the radial direction are arranged at the tail end of the elastic cantilever; the connecting screw cap is internally provided with ratchets which are correspondingly and unidirectionally meshed with the convex teeth; a circular bead is arranged on the outer circumferential surface of the connector casing; an annular table is arranged on the inner circumferential surface of the connecting screw cap; and an anti-backlash spring is pressed between the annular table and the circular bead. The connector can effectively prevent slack and is applicable for environmentswith vibration.

The invention discloses a clothes belt fastener. The clothes belt fastener comprises a quadrangular frame, the frame comprises two transverse edge frame bodies, two connecting parts are arranged between the two transverse edge frame bodies and both provided with a protrusion part, the protrusion parts on the two connecting parts are located on the upper and lower sides of the frame respectively, and multiple stripes are arranged on the outer surface of each protrusion part. The clothes belt fastener cooperating with a clothes belt can fasten clothes, the clothes belt and the fastener are not easily loosened, and the problem of loosening of the clothes cannot occur.

The invention discloses a special-shaped wrench with an adjustable opening. The wrench comprises a wrench head and a wrench arm, the wrench head is of an inverted hook structure, the lower end is rotatably connected to the end of the wrench arm through a hinge rod, an arc sawtooth part is arranged on the upper end of the wrench arm, a strip adjusting groove is formed in the position, on the connecting position of the hinge rod, of the wrench head, the length direction of the strip adjusting groove is the same in the length direction of the wrench head, multiple arc clamping grooves equal to the diameter of the hinge rod are formed in the length direction of the strip adjusting groove, the arc clamping grooves are symmetrically arranged relative to the length direction of the strip adjusting groove, the hinge rod is provided with two symmetric cutting faces, the interval between the two cutting faces is smaller than the width of the strip adjusting groove, and the two ends of the stripadjusting groove are locked through nuts. Adjustability of the opening of the special-shaped wrench can be achieved, the application site is greatly added, the use range is widened, the equipment costis reduced, more wrenches do not need to be carried, the weight of carrying tools is reduced, time and labor are saved, adjusting is convenient and rapid, connection is reliable and stable, and loosening is avoided.

The invention is applicable to the technical field of door locks and provides a portable door lock. The portable door lock comprises a fastener part, a lock seat and a lock tongue, wherein a fastener portion is arranged at one end of the fastener part, a through hole is formed in the other end of the fastener part, and the fastener portion is clamped in a locking groove formed in a door frame and abuts against the side, close to the indoor side, of the locking groove. After the lock tongue penetrates through the through hole, the lock tongue abuts against the side, facing the indoor side, of a door leaf. The portable door lock is not needed to be pre-installed on a door, is convenient to carry and use during outgoing and does not need any auxiliary tool when being applied, and the operating process is very simple and convenient. In addition, the door leaf is clamped between the fastener portion of the fastener part and the lock tongue, the problem of fastener part loosing does not exist, and counter door locking from inside or outside of a room can be achieved. It is thus clear that the portable door lock is firm and reliable and effectively guarantees that personal safety and property safety of a user.

The invention relates to the technical field of machinery, in particular to a mechanical clamping jaw which comprises a fixing frame, an air cylinder, a transmission module and a clamping module, and is characterized in that the air cylinder, the transmission module and the clamping module are assembled and used through the fixing frame. The air cylinder is fixed outside the fixing frame, the output end of the air cylinder penetrates through the fixing frame to be connected with the transmission module, and the air cylinder drives the transmission module to drive the clamping module to conduct clamping work. After an object is clamped, a reset switch is triggered in the process that the middle section of a clamping plate deforms and bends and sinks inwards, and through electric signal transmission and control among the reset switch, a controller, a pressure sensor and an electromagnet, the electromagnet embedded in the face, in sliding contact with the sliding plate, of the fixing frame is powered on, and the sliding plate is firmly adsorbed. Therefore, the problem that the sliding plate tilts up due to the fact that a clamping force arm is long in the object clamping process is solved, and the problem that the lower portion of the clamping plate is loosened is solved.

The invention discloses a stable locking structure for a drawer. The stable locking structure for the drawer comprises a locking device, the locking device at least comprises a connecting seat, a front hole is formed in the front part of the connecting seat, a front fastening part is arranged on the front hole, and a side hole is formed in the side part of the connecting seat; a side fastening part is formed in the side hole; wherein the front hole forms a certain acute angle with the bottom surface of the connecting seat, and the side hole and the bottom surface of the connecting seat are perpendicular to each other. The structure is improved and the mutual cooperation of the front fastening part and the side fastening part is utilized, so that the locking device is stably assembled on the furniture drawer, and the stability and the firmness of the mutual assembling of the locking device and the furniture drawer are improved so as to avoid the disadvantage that the locking device in the prior art can only be fixed to a bottom plate of the furniture drawer, and the practicability is high.