112results about How to "Not easy to loosen and fall off" patented technology

The invention relates to a swinging-block type child seat safety buckle for an automobile, mainly comprising a buckle pulling main body and inserting pieces matched with the buckle pulling main body and can be inserted in and pulled out from the buckle pulling main body, wherein the buckle pulling main body comprises an upper cover, a lower cover, a button and a buckle pulling core body; the buckle pulling core body comprises an upper cover plate, a lower cover plate, a locking piece arranged on the lower cover plate, a left swinging block, a right swinging block, a left torsion spring, a right torsion spring and a top spring; and the locking piece pushes against or loosens the left swinging block and the right swinging block so that the left swinging block and the right swinging block get in a pushing or separated state with the button. In the invention, the locking piece pushes against middle lugs corresponding to the left swinging block and the right swinging block so that inserting hooks of the inserting pieces can be buckled with upper concave openings corresponding to the left swinging block and the right swinging block so as to realize locking of the safety buckle; or the locking piece pushes against lower lugs corresponding to the left swinging block and the right swinging block so that the concave openings corresponding to the left swinging block and the right swinging block release the inserting hooks of the inserting pieces so as to realize the release of the safety buckle. The swinging-block type child seat safety buckle has simple and compact structure and few linking pieces and is convenient to manufacture and use;, the matching structure of all components is stable and the locking is sensitive and hardly loosens or falls off, therefore the use safety performance is high.

The invention discloses a trim strip for a shelf, a shelf with the trim strip and a refrigerator with the shelf. The trim strip for the shelf comprises a body. An installation groove with an opening facing left and stretching forwards and backwards is formed in the body. A first anti-skidding protrusion and a flexible anti-skidding strip are formed on the lower surface of the upper side wall of the installation groove. The fixed end of the flexible anti-skidding strip is located at the left side of the first anti-skidding protrusion and the free end of the flexible anti-skidding strip is located below the first anti-skidding protrusion. The trim strip for the shelf is firm in match, not prone to loosening and falling, simple in structure and reliable in assembly.

The invention relates to a high-power power electronic capacitor for elastic connection among core sets and copper bars. The high-power power electronic capacitor comprises a cover plate assembly, an outer shell and the core sets. The core sets are fixed in the outer shell, leading-out copper strips are arranged on the two metal sprayed faces of each core set respectively, and bent leading-out electrodes are arranged at the upper ends of the leading-out copper strips and used for being electrically connected with leading-out terminals of the cover plate assembly through welding. Elastic conducting plates are arranged on the leading-out copper strips and extend to all capacitor core metal sprayed faces of the core sets, and the tail end of each elastic conducting plate is electrically connected with the corresponding capacitor core metal sprayed face through the welding. The core sets are connected with the leading-out copper strips in an elastic mode. The force, adhering to the elastic conducting plates, of welding points is strengthened. The situation that the leading-out copper strips have sufficient properties of current passing can be guaranteed, and in addition, the situation that the displacement of the core sets causes the welding points to be strained can be eliminated, so that the welding points are not prone to loosening and disengaging.

The invention discloses an aluminum oxide ceramic nut and a manufacturing process thereof. The aluminum oxide ceramic nut mainly comprises the following components in percentage by weight: 90-95 percent of aluminum oxide, 1-5 percent of talc powder, 1-5 percent of Suzhou soil and 0.5-1 percent of silicon dioxide. The aluminum oxide is ground and crushed to prepare paste, and the paste is moulded by hot pressure casting, and is fired at a high temperature of 1600 DEG C. The aluminum oxide ceramics nut is high in strength, corrosion-resistant, convergent-divergent which is the same as that of a corundum exposure head, and difficult to loosen and drop during operation.

The invention discloses a spliced structure of a stone floor and a carpet. The stone floor comprises a bonding layer formed on a cement mortar leveling layer, and a stone board on the bonding layer; the carpet close to the stone floor end comprises a wooden keel fixed on the cement mortar leveling layer, a barb board fixed on the wooden keel and a carpet surface layer on the barb board; the joint of the stone floor and the carpet is provided with a connecting piece; the connecting piece comprises a stone floor protection wall and a carpet protection wall; a buckling groove is formed between the floor protection wall and the carpet wall; the stone floor protection wall clings to the bonding layer of the stone floor and the end face, which faces the carpet direction, of the stone board; the carpet protection wall clings to the end faces, which face the stone floor direction, of the wooden keel and the barb board; and the carpet surface layer extends into the buckling groove. The spliced structure has the characteristics of smooth joint, natural transition, installation firmness and the like between the stone floor and the carpet, and the attractiveness of the splicing position between the stone floor and the carpet is ensured; and corners of the stone floor or the carpet are prevented from being damaged, and the decoration quality is ensured.

The invention discloses a casting method of a metal composite lining plate, and relates to the technical field of casting. The method comprises the following steps: a first molten metal is injected into a casting mold which is formed by closing a lower mold and an upper mold of a first metal layer, and the upper mold of the first metal layer is removed under the high-temperature state after the first metal layer is solidified; an upper mold of a second metal layer and the lower mold are subjected to mold closing, a mold is vacuumed, and then a second molten metal is poured into a mold cavity; after pouring is completed, the ultrasonic vibration is applied for 23-29 seconds, the second molten metal is solidified and cooled, and a metallurgical bonding state is achieved between the second molten metal and the first molten metal. According to the casting method of the metal composite lining plate, the problem that a clear binding interface cannot be formed due to the fact that a mixing phenomenon is prone to occur during casting the existing metal composite lining plate.

The invention discloses a decorative frame for automobile lamps. The decorative frame comprises a decorative frame body. A first lamp frame and a second lamp frame both used for holding lamp sources are arranged on the decorative frame body. Reflecting sheets are arranged around the first and second lamp frames. The upper and lower portions of the decorative frame body are provided with clamp legs. Two sides of each clamp leg are provided with protrusions. During mounting, the clamp legs are inserted into a lamp base, so that mounting is simple and convenient; the protrusions on two sides of each clamp leg allow for mounting firmness and rare loosening and shedding.

The invention discloses a vacuum cup cover and a vacuum cup thereof. The vacuum cup cover comprises an outer cover and an inner cover, wherein a hardware snap ring with a barb structure is fixedly arranged on the inner side of the mouth of the outer cover; a sealing ring is arranged between the hardware snap ring and the outer side of the inner cover; and the outer cover and the inner cover are fixedly fastened through the hardware snap ring. The hardware snap ring with the barb structure is connected to the inner cover and the outer cover of the cup cover, so that the inner cover and the outer cover are firmly connected, and loosening and falling are less likely to occur. Meanwhile, a heat insulation block with a better heat insulation effect is arranged in an inner cover cavity of the inner cover, so that the vacuum cup cover and the vacuum cup provided with the cup cover are simpler and more convenient to produce and install, better in quality, more attractive and better in sealingperformance.

The invention discloses a clamping device with a ratchet device for a ground wire. The clamping device comprises a chuck, a propelling post, a clamping piece, a connection frame, an insulating rod and a ratchet fastening device, wherein the chuck comprises an upper bump, a lower bump and a connection block; the upper bump and the lower bump are arranged in parallel and are fixed at two ends of the connection block separately to form a structure with a groove; the propelling post passes through the lower bump and is in threaded connection with the lower bump; the clamping piece is fixed at one end, entering the inside of the groove, of the propelling post; a fixture block is arranged at one end, outside the chuck, of the propelling post and is a polygon; the ratchet fastening device is hinged with the connection frame; the connection frame is fixedly connected with the insulating rod; the ratchet fastening device comprises a fixture block mating hole; and the fixture block mating hole is in fit connection with the fixture block. By adopting the ratchet device, the target that the propelling post can only rotate in the same hour hand direction and cannot rotate in the other hour hand direction in the swing process of the insulating rod can be achieved, so that the single tightening or disassembling process can be continuously achieved through only one-step installation.

The invention belongs to the technical field of new energy automobiles, and particularly relates to a new energy automobile charging gun. The new energy automobile charging gun comprises a protectiveseat, two positioning rails are inserted on the protective seat in a penetrating mode in the left-right direction, and first racks are fixedly connected to the opposite side walls of the two positioning rails. One end of a boosting mechanism is fixedly connected with the end side wall, away from a fixed mechanism, of the protective seat, and a limiting mechanism used for limiting the two positioning rails is arranged in the protective seat. A charging plug is fixedly connected to the end side wall, close to the fixed mechanism, of the protective seat, a power line is fixedly connected to the lower end of the protective seat, and the power line is electrically connected with the charging plug. The new energy automobile charging gun has the advantages that the new energy automobile charginggun has better stability when being connected with an automobile connector, so that the phenomenon of loosing or falling of the charging plug is not prone to appearing, meanwhile, insertion and extraction postures of a user can be standardized and instruction can be provided for the user to protect a charging connector, the service life of the charging connector is prolonged, and using costs of the charging connector are reduced indirectly.

The invention relates to a stressed template component used for a floor system, and the component is composed of a template (1) and is characterized in that the invention also comprises trusses (2) which are parallel and arranged at intervals, and the trusses (2) are arranged on the template (1) and are connected with the template (1) into a whole; the trusses (2) are provided with a top boom (3), a lower boom (4) and a web member (5); wherein, the web member (5) is connected with the top boom (3) and the lower boom (4); the lower boom (4) of the trusses (2) is of an integral elongated template (1); the trusses (2) are of a rodless lower boom (4). The invention is applicable to cast-in-situ reinforced concrete or a hollow floor system, a roof system, walls and a foundation slab of the prestressed reinforced concrete as well as a vierendeel bridge girder, and is particularly suitable for a hollow flat slab.

The invention relates to the field of production machinery of ferrous metallurgy industry, and particularly discloses a rotary scraper and a manufacturing method thereof. The rotary scraper comprises a tool bar and a tool bit connected through a bolt. The rotary scraper is characterized by also comprising a jacket which is sleeved outside the tool bar and the tool bit. The method comprises the following steps of: manufacturing the tool bar; fixing the tool bit on the tool bar by using the bolt, and coating adhesive between the tool bit and the tool bar; sheathing the jacket outside the tool bit and the tool bar; drilling a hole on the bolt from the jacket at the part of deepening the bolt to the tool bar; and jacking a jackscrew into the hole, and vertically fixing the jackscrew on the bolt. According to the technical scheme provided by the invention, the service life of the scraper is prolonged, the integral toughness and the firmness of the scraper are enhanced, and the production efficiency is improved.

The invention relates to the technical field of oil and gas well through-tubing perforation operation, in particular to a chain-type body-free perforator. The chain-type body-free perforator includesat least one bullet holder, wherein perforating bullets are installed on the bullet holders, the perforating bullets comprise shell bodies and shell covers, the shell bodies are connected with the shell covers to form bullet shells with sealed inner cavities, the inner cavities of the bullet shells are filled with explosives, and the explosives are compacted through shaped charge liners installedin the inner cavities of the bullet shells. The chain-type body-free perforator has the beneficial effects that the structures of the bullet shells are simple, disassembly and assembly are convenient,end face sealing is carried out by the shell covers, connection and sealing of the shell bodies and the shell covers are realized through extrusion deformation force between the shell bodies and theshell covers, and performance is reliable; the independent bullet holders serve as carriers of the perforating bullets, the number and the phase position of the perforating bullets are flexibly set conveniently according to needs, all the bullet holders are arranged independently and are not prone to being clamped in casing pipes, moreover, the bullet holders can be broken into fine particles completely after perforation of the perforating bullets, after perforation is finished, the bullet holders do not need to be taken out again, occurrence of the well jamming accident is avoided, and safetyperformance is improved.

The invention relates to an automatic fastening screw provided with a hollow outer screw body. An outer thread is arranged on the outer screw body. A hollow outer screw cap is arranged on the upper portion of the outer screw body. An expansion sheet is arranged in a cavity of the outer screw body. A V-shaped groove is formed in the upper end of the expansion sheet. Expansion grooves are formed in the side face of the outer screw body in the manner of being matched with the expansion sheet so that the expansion sheet can stretch out of the expansion grooves during expanding. A solid inner screw body is further arranged in a hollow structure of the outer screw cap and the outer screw body, a convex inner screw body sharp end is arranged at the bottom end of the inner screw body, and the inner screw body sharp end right faces the center of the V-shaped groove. A thread is arranged on the outer side of the inner screw body sharp end, and the inner screw body sharp end is rotationally fixed in the cavity of the outer screw body through a nut arranged in a matched manner. The top end of the inner screw body is connected with the inner edge of the outer screw cap through a connecting key, and a screw groove used in cooperation with a screwdriver is formed in the top end of the inner screw body. The automatic fastening screw can be firmly fixed inside a fixed object, and loosening and falling off are not prone to happening on occasions where shaking often happens.