Abstract: The disclosure provides a limit device and a robot using the same. The limit device comprises a first connecting member, a transmission rod and a second connecting member. The first connecting member comprising a first main body portion and two first connecting elements. The two first connecting elements are arranged at intervals. The two first connecting elements are respectively connected to the first main body. The transmission rod comprising a first end and a second end. The first end and the second end are arranged at intervals. The first end penetrates through one of the two first connecting elements. The second end penetrates through the other one of the two first connecting element. The second connecting member provided with two indexing buckles. The two indexing buckles are arranged at intervals, each of the indexing buckles comprises a first limiting groove and a second limiting groove.

Abstract: An embodiment interfacial bonding test structure may include a first substrate having a first planar surface, a second substrate having a second planar surface that is parallel to the first planar surface, a first semiconductor die, and a second semiconductor die, each semiconductor die bonded between the first substrate and the second substrate thereby forming a sandwich structure. The first semiconductor die and the second semiconductor die may be bonded to the first surface with a first adhesive and may be bonded to the second surface with a second adhesive. The first semiconductor die and the second semiconductor die may be displaced from one another by a first separation along a direction parallel to the first planar surface and the second planar surface. The second substrate may include a notch having an area that overlaps with an area of the first separation in a plan view.

Abstract: In an automatic return structure of a bicycle, a stopper block is mainly disposed on the other end of a crank different from a pedal, and a guide block is disposed on an inner surface of a middle portion of the crank. The stopper block may be formed with a groove on the other end of the crank. The guide block has an arced guide surface. Upon chain detachment, the stopper block blocks the chain, and then the pedal being pedaled makes the guide block lift up the chain to a location above the sprocket, so that the chain slides downward to teeth of the sprocket along the arced guide surface to perform automatic upshifting. The danger of chasing caused by the sudden slowdown or stop upon chain detachment can be avoided, the rider needs not to get off to perform manual upshifting, and riding convenience can be significantly enhanced.

Abstract: In an automatic return structure of a bicycle, a stopper block is mainly disposed on the other end of a crank different from a pedal, and a guide block is disposed on an inner surface of a middle portion of the crank. The stopper block may be formed with a groove on the other end of the crank. The guide block has an arced guide surface. Upon chain detachment, the stopper block blocks the chain, and then the pedal being pedaled makes the guide block lift up the chain to a location above the sprocket, so that the chain slides downward to teeth of the sprocket along the arced guide surface to perform automatic upshifting. The danger of chasing caused by the sudden slowdown or stop upon chain detachment can be avoided, the rider needs not to get off to perform manual upshifting, and riding convenience can be significantly enhanced.

Abstract: A simple injection molding machine structure including a stationary platen, a movable platen, and an injection unit, and an injection method for the simple injection molding machine structure are provided. The stationary platen and the movable platen each carry a mold core for defining a mold cavity. The movable platen is movable freely relative to the stationary platen. The injection unit is disposed on the movable platen and includes an injection barrel, a heating member, a screw rod and a driving member. The screw rod is coupled to the driving member, extended into, and received in the injection barrel. The heating member is disposed on the injection barrel. The screw rod pressurizes, injects, and delivers molten plastic. The simple injection molding machine operates by controlling the speed of advancement of the screw rod to stabilize pressure and thus allow the molten plastic to take shape easily.

Abstract: A simple injection molding machine structure including a stationary platen, a movable platen, and an injection unit, and an injection method for the simple injection molding machine structure are provided. The stationary platen and the movable platen each carry a mold core for defining a mold cavity. The movable platen is movable freely relative to the stationary platen. The injection unit is disposed on the movable platen and includes an injection barrel, a heating member, a screw rod and a driving member. The screw rod is coupled to the driving member, extended into, and received in the injection barrel. The heating member is disposed on the injection barrel. The screw rod pressurizes, injects, and delivers molten plastic. The simple injection molding machine operates by controlling the speed of advancement of the screw rod to stabilize pressure and thus allow the molten plastic to take shape easily.

Abstract: A bicycle crank assembly of bicycle cranks and axle includes a first crank having a first hole which has a first open end and a second open end opposite the first open end. A first protrusion extends from the inner periphery of the first open end and a second protrusion extends from the first protrusion. The second protrusion has a first restriction face. An axle extends through the first crank and has a third end and a fourth end opposite the third end. The third end has a fixing portion on the outside thereof. The fixing portion has a recessed portion defined in the connection area with the axle. The recessed portion has a second restriction face which is matched with the first restriction face so as to evenly share the stress.

Abstract: A crank has a connection portion with a connection recess defined therein which has an engaging recess, a reception recess and a reception groove. The engaging recess is located at a closed end of the connection recess and the reception recess is located at an opened end of the connection recess. The reception groove is located between the engaging recess and the reception recess. An axle has an engaging portion at an end thereof and the engaging portion is engaged with the engaging recess. A guide surface is defined in an outer periphery of the cylindrical body. A ring-shaped washer is mounted to the cylindrical body and securely fills into the reception groove and the gap between the axle and the reception recess.

Abstract: A crank has a connection portion with a connection recess defined therein which has an engaging recess, a reception recess and a reception groove. The engaging recess is located at a closed end of the connection recess and the reception recess is located at an opened end of the connection recess. The reception groove is located between the engaging recess and the reception recess. An axle has an engaging portion at an end thereof and the engaging portion is engaged with the engaging recess. A guide surface is defined in an outer periphery of the cylindrical body. A ring-shaped washer is mounted to the cylindrical body and securely fills into the reception groove and the gap between the axle and the reception recess.

Abstract: A bottom bracket assembly for a bicycle includes a bottom bracket, two axles mounted on the bottom bracket and two cranks each having a mounting tube mounted on the respective axle. Each of the axles has a first engaging face, and the mounting tube of each of the cranks has a second engaging face engaging the first engaging face of the respective axle. Thus, the first engaging face extends through a partial portion of the circumference of each of the axles, and the second engaging face extends through a partial portion of the circumference of the mounting tube of each of the cranks to reduce the clearance between the mounting tube and the respective axle, so that the mounting tube of each of the cranks and the respective axle are combined together closely and tightly.