30results about How to "Reasonable matching" patented technology

The invention discloses a metering terminal box capable of effectively solving problems of wire off and wire breaking in wiring and ensuring safe operation of an electric power circuit. The metering terminal box comprises a box body, a box cover, conducting strips and a locking mechanism. The interior of the box body is partitioned into a plurality of wiring cavities through longitudinal partition plates, a boss is arranged in the middle of each wiring cavity, a left side face and a right side face of the front portion and a left side face and a right side face of the rear portion of each wiring cavity are respectively and correspondingly provided with a hinged seat, and wiring holes respectively corresponding to the wiring cavities are formed in the front side wall and the rear side wall of the box body; a sleeve hole adaptive to the boss is formed in the middle of each conducting strip, and the conducting strips are correspondingly arranged at bottoms of the wiring cavities one by one; the locking mechanism comprises gate valves, springs and baffles, each gate valve comprises a pressing handle, a valve block and a hinged shaft, and the gate valves are mounted on the front portion and the rear portion of each wiring cavity of the box body; the springs are arranged the pressing handle of each gate valve and the boss in an embedded mode; and pressing handle holes respectively corresponding to the pressing handles of the gate valves are formed in the front portion and the rear portion of each baffle, and middles of the baffles are mounted on the bosses through screws.

The invention discloses an English shorthand training apparatus. The periphery of a hollow circle of an upper circular ring protrudes downwards to form an upper cylinder, the periphery of a hollow circle of a lower circular ring protrudes upwards to form a lower cylinder, and a roller is connected with the upper cylinder and the lower cylinder through bearings. A central pillar passes through the roller, and the two ends of the central pillar are respectively fixed on the sidewalls of the upper cylinder and the lower cylinder through fixing rods. A vertical rectangular opening is formed in the sidewall of the roller, a power spring is arranged in the roller, the center end of the power spring is fixed on the central pillar, the outer end of the power spring is connected with one end of a connecting sheet, and the other end of the connecting sheet passes through the opening and is connected with a clamp. One end of a memory strip is clamped by the clamp, and the other end of the memory strip is connected to a handle. The English shorthand training apparatus helps students to focus and realizes short-time rapid memory.

The invention discloses an image taking shot. The image taking shot comprises four lens which are made of plastic, each surface of the lens is respectively in an aspheric surface, the lens successively comprises a first plus lens, a second concave lens, a third plus lens, and a fourth concave lens along the incidence direction of the ray, wherein the first plus lens is provided with a first surface which is convex to the object direction and a second surface which is convex to the image direction; the second concave lens is provided with a third surface which is concave to the object direction and a fourth surface which is concave to the image direction; the third plus lens is provided with a fifth surface which is concave to the object direction and a sixth surface which is convex to the image direction; and the fourth concave lens adopts the double-peak structure and is provided with a seventh surface which is concave to the object direction and an eighth surface which is convex to the image direction. For the shot, through the reasonable allocation manner of the lens group, the length of the shot can be effectively shortened, the aperture of the shot can be enlarged, the sensitivity of the system can be reduced, and the better imaging quality can be obtained in the environment of low light.

The invention discloses a photo-bleachable visible light initiator as well as a preparation method and application thereof, and belongs to the field of visible light photocuring. In the prior art, inthe visible light photocuring process, a curing system can absorb visible light, so that the penetrability of visible light is reduced, and the curing depth of the curing system is reduced. The photo-bleachable visible light initiator provided by the invention can successfully initiate visible light free radical photopolymerization, and a polymerized material can be changed from colored to colorless and transparent, so that the material application range is widened, and the curing depth is increased. The invention also provides a preparation method of the photo-bleachable visible light initiator. According to the preparation method, an aromatic aldehyde and a compound containing active methylene are subjected to condensation reaction to prepare the photo-bleachable visible light initiator.The synthesis method of the photo-bleachable visible light initiator is simple, the absorption wavelength of the photo-bleachable visible light initiator can be adjusted and changed through molecularstructure adjustment to adapt to light sources with different wavelengths, and the application range is wide.

The invention provides a novel escape door lock, which comprises a lock shell, a shell cover, a locking head groove, a locking head, an electromagnet, a touch switch, a locking machine, a shifting block, a shifting block return spring and a locking head return spring. The locking head groove comprises a fixing plate and a slot body; the locking head is a ribbon board which comprises a door hook and a strip slide opening; the locking machine comprises a curved plate and an electromagnet suction plate; the shifting block comprises a clamping groove body and a push plate; the touch switch corresponds to the ribbon board and is connected with the electromagnet; the inner wall of the lock shell is provided with a sliding post which is near the outlet of the locking head; the ribbon board is sleeved on the sliding post through the strip slide opening; the door hook passes through the outlet of the locking head of the lock shell; the clamping groove body is arranged on a pull groove port of the lock shell; the shifting block return spring is connected between the lock shell and the push plate; the push plate corresponds to the ribbon board; the locking head return spring is connected between the lock shell and the ribbon board; and the electromagnet suction plate corresponds to the electromagnet. The door lock has the advantages of convenient use, firm locking, convenient and fast door opening, safety and reliability.