Abstract: A motor-driven vehicle includes a first vehicle body with a sleeve tube, a second vehicle body with an insert rod disposed telescopically within the sleeve tube, and a locking device including a pull rod, a retaining block and a resilient member. The pull rod is movable on the first vehicle body between a locking position and a release position. When the pull rod is disposed at the locking position, the retaining block extends through a hole in the sleeve tube and engages a selected one of holes in the insert tube of the second vehicle body. When the pull rod is disposed at the release position, the retaining block is removed from the holes in the insert rod. The resilient member biases the pull rod to the locking position.

Abstract: A motor-driven vehicle includes a first vehicle body with a sleeve tube, a second vehicle body with an insert rod disposed telescopically within the sleeve tube, and a locking device including a pull rod, a retaining block and a resilient member. The pull rod is movable on the first vehicle body between a locking position and a release position. When the pull rod is disposed at the locking position, the retaining block extends through a hole in the sleeve tube and engages a selected one of holes in the insert tube of the second vehicle body. When the pull rod is disposed at the release position, the retaining block is removed from the holes in the insert rod. The resilient member biases the pull rod to the locking position.

Abstract: A motor-driven vehicle includes a vehicle body with a top plate disposed at a top portion thereof, and a seat disposed above the vehicle body and including a fixed bottom plate that is superposed on the top plate. A connecting device connects the seat removably to the vehicle body, and includes a first pivot member disposed fixedly on one side of the top plate of the vehicle body, an engagement portion disposed fixedly on the opposite side of the top plate of the vehicle body, a second pivot member disposed fixedly on the bottom plate of the seat and connected rotatably and removably to the first pivot member, and a retaining unit attached to the bottom plate of the seat and connected removably to the engagement portion so as to prevent rotation of the seat relative to the vehicle body.

Abstract: A casing of an electronic apparatus has a body and an electromagnetic absorption structure combined with a surface of the body. A manufacturing method for a casing of an electronic apparatus forms a body first, and then disposes an electromagnetic absorption structure on a surface of the body. Another manufacturing method for a casing of an electronic apparatus includes disposing an electromagnetic absorption layer on a surface of a film to form an electromagnetic absorption structure, and then placing the film into a set of molds and using an insert-molding technology to have injection material to form a body combined with the electromagnetic absorption structure to obtain a casing of an electronic apparatus. The casing absorbs electromagnetic waves, and the electromagnetic waves are transformed into heat energy to dissipate and vanish, thereby eliminating the existence of the electromagnetic waves.

Abstract: A method of manufacturing a casing of an electronic product with surface decoration thereon has a step of designing a decorative image, a step of printing a decorative layer on a film, and a step of injection molding. The decorative image is designed by using a computer. The decorative image is transformed into a decorative layer and the decorative layer is printed on a film by using a computer and a printer connected with each other. The casing of an electronic product with surface decoration thereof is obtained by applying in-mold decoration and injection molding technology, which combines injection material with the film.