Abstract:
A high-strength chain plate structure comprises an inner plate body and an outer plate body. The inner plate body has a first waist portion provided with a first receiving portion and a first outer side portion. The first outer side portion has a first slope. The first slope and the first waist portion form a continuous two-step structure. The outer plate body has a second waist portion provided with a second receiving portion and a second outer side portion. The second outer side portion has a second slope. The second slope and the second waist portion form a continuous two-step structure. The tensile strength, impact resistance and torsion resistance of the chain can be improved.
Abstract:
A link connecting structure includes two outer link plates and two inner link plates. An inner side of each outer link plate is formed with a concave portion between two first coupling portions at two ends thereof. A connecting surface is connected between each first coupling portion and the concave portion. The connecting surface is gradually tapered inward from each first coupling portion toward the concave portion. An outer side of each inner link plate is provided with a pair of bent portions each extending from an outermost edge of each second coupling portion toward the connecting surface. A gap is defined between each bent portion and the connecting surface. The gap is less than the minimum thickness of a narrow tooth of a chainring, thereby preventing the tooth from being jammed in the gap.
Abstract:
A low-noise lifting device includes a rack and a gear. The rack includes first teeth each having a first crown portion. A surface of the first crown portion is defined as a first contact surface having a circular arc shape. The gear includes second teeth. A second root portion is defined between every adjacent two of the second teeth. A surface of the second root portion is defined as a second contact surface having a circular arc shape. When the gear is meshed with the rack, the second contact surface and the first contact surface are in close contact with each other in a circular arc shape, without a backlash, so as to reduce the noise generated by the transmission.
Abstract:
A chain plate structure includes a link plate body and a sleeve. The link plate body has an acting surface being provided with a first approach edge, two combining portions, and a limiting block located adjacent to the first approach edge. The limiting block has an altitude higher than an altitude of the acting surface. The sleeve is mounted on the link plate body and has a through hole whose maximum diameter is greater than a maximum diameter of a raised ring peripherally formed on the corresponding one of the combining portions. Therefore, when two of the link plate bodies are combined together, a first space is formed between the acting surfaces of the two aligned link plate bodies. The limiting block serves to limit the first space, while the sleeve is allowed to move on one of the combining portions so as to provide a second space.
Abstract:
A chain plate structure includes a link plate body and a sleeve. The link plate body has an acting surface being provided with a first approach edge, two combining portions, and a limiting block located adjacent to the first approach edge. The limiting block has an altitude higher than an altitude of the acting surface. The sleeve is mounted on the link plate body and has a through hole whose maximum diameter is greater than a maximum diameter of a raised ring peripherally formed on the corresponding one of the combining portions. Therefore, when two of the link plate bodies are combined together, a first space is formed between the acting surfaces of the two aligned link plate bodies. The limiting block serves to limit the first space, while the sleeve is allowed to move on one of the combining portions so as to provide a second space.
Abstract:
A pliers for chain link includes a left pliers body, a right pliers body, a pin and an elastic member. The left pliers body and the right pliers body are connected either in a parallel form or in a cross form. Center portions of the left and right pliers bodies are connected by the pin. The elastic member is located between the left and right pliers bodies. The left and the right pliers bodies includes clamping portions which have jaw parts. The jaw parts have curved edges thereon. The jaw part of the left pliers body corresponds to the jaw part of the right pliers body. The curved edges are adapted to lean against chain pins of chain plates to stabilize the operation of clamping.
Abstract:
A forming method for applying a continuous punching to a chain roller includes a raw block having a first surface and a second surface. The raw block would be sequentially punched and formed throughout the first to sixth punching or throughout the first to seventh punching. During the fourth punching, a first blanking would be executed. Alternatively, before executing the sixth or the seventh punching, a second blanking would be implemented.
Abstract:
A chain connecting device includes a roller, a pair of inner chain plates, a pair of outer chain plates, a rivet and a fastener. The rivet has a hole at one end with inner threads for the fastener to be threaded therein. Both the rivet and the fastener each comprise an enlarged end to hold the inner chain plates and the outer chain plates together in a secure manner and to enhance the strength of the connection.
Abstract:
A cap assembly includes a first part for mounting to a bottle and a second part coupled to the first part, and a sucking member pivotally disposed to a top of the first part. The top of the first part has two stands, a support located between the two stands and a stop extending therefrom, wherein the support has a passage defined therethrough and extending through the top. The sucking member has a sphere member rotatably supported between the two stands and is rested on a first annular flange extending from a top of the support. The second part has two clamping members extending from a bottom thereof so that when the second part is mounted to the first part, the sucking member is clamped by the clamping members and pivoted and laid on the stop.
Abstract:
Disclosed is an audio transmission device for mounting in a monitor of a computer system and including a pair of symmetric frameworks mounted behind a front frame of the monitor at two lower or upper corners thereof so that a distance left between the pair of frameworks is about a width of a system board disposed inside the monitor. The framework each further includes a fixing arm formed at an inner side with a longitudinal groove which has a width slightly larger than a thickness of the system board to clamp the same between the pair of frameworks, a connecting arm extended from one side of the fixing arm, a resonant cabinet connected to the fixing arm via the connecting arm, and shock-absorbing arms extended from two side walls of the resonant cabinet for locking to the front frame of the monitor. The resonant cabinet is partitioned inside it to form a high-tone and a low-tone guide paths. The high-tone guide path is formed at a base portion with supporting grooves for a speaker to mount thereon. The fixing arm each is provided at an extended end with locating device to engage with a fixed point provided behind the front frame of the monitor and thereby fixing the framework to the front frame.