Abstract: The present invention discloses a flexible connecting structure of a prefabricated component and a building main body. The flexible connecting structure comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at the lower end of the prefabricated component, a mortise matching the tenon is provided on the top surface of the cast-in-situ building main body, and the prefabricated component is socketed to the lower layer of cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and the upper layer of cast-in-situ building main body is provided at the junction between the prefabricated component and the upper layer of cast-in-situ building main body.

Abstract: A pet leash preventing locking due to jerk includes a housing provided with a handle and a reel disk arranged in the housing. The reel disk is rotatably connected to the housing. A leash rope is wound on the reel disk. One end of the leash rope penetrates through the housing. The housing is provided with a rotary damper. A clutch structure is provided between the reel disk and the rotary damper, and is actuable under a centrifugal force to connect the reel disk to the rotary damper when a rotation speed of the reel disk exceeds a predetermined rotation speed.

Abstract: The present invention discloses a flexible connecting structure of a prefabricated component and a building main body. The flexible connecting structure comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at the lower end of the prefabricated component, a mortise matching the tenon is provided on the top surface of the cast-in-situ building main body, and the prefabricated component is socketed to the lower layer of cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and the upper layer of cast-in-situ building main body is provided at the junction between the prefabricated component and the upper layer of cast-in-situ building main body.

Abstract: A double rope pet leash includes a leash body. A leash cavity is located in the leash body. A first leash assembly and a second leash assembly are connected to the leash body. The first leash assembly is fixedly connected with the leash body. The second leash assembly is located in the leash cavity and rotatably connected to the leash body. A first leash rope is pressed on the surface of the first leash assembly, and a second leash rope is pressed on the surface of the second leash assembly. The double rope pet leash further includes an open-close assembly connected to the leash body and capable of opening or closing the leash cavity.

Abstract: A double rope pet leash includes a leash body. A leash cavity is located in the leash body. A first leash assembly and a second leash assembly are connected to the leash body. The first leash assembly is fixedly connected with the leash body. The second leash assembly is located in the leash cavity and rotatably connected to the leash body. A first leash rope is pressed on the surface of the first leash assembly, and a second leash rope is pressed on the surface of the second leash assembly. The double rope pet leash further includes an open-close assembly connected to the leash body and capable of opening or closing the leash cavity.

Abstract: A pet leash preventing locking due to jerk includes a housing provided with a handle and a reel disk arranged in the housing. The reel disk is rotatably connected to the housing. A leash rope is wound on the reel disk. One end of the leash rope penetrates through the housing. The housing is provided with a rotary damper. A clutch structure is provided between the reel disk and the rotary damper, and is actuable under a centrifugal force to connect the reel disk to the rotary damper when a rotation speed of the reel disk exceeds a predetermined rotation speed.