The invention relates to a detacher for chain quick link comprising: a main body with a first end and a second end, the main body has a fixed jaw; a driving member with a screw portion screwed into a screw hole provided at the first end of the main body, when the driving member is rotated, the driving member is capable of displacing toward the second end of the main body; and a sliding member displaceably installed in the main body, a movable jaw of the sliding member corresponds to the fixed jaw; when the driving member displaces toward the second end of the main body, the sliding member is driven to displace toward the second end of the main body together, so that the movable jaw moves toward the fixed jaw for disassembling a quick-linked chain.

To provide a versatile and easy-to-produce link plate that can reduce frictional resistance and keep surface pressure low while maintaining a small height of a guide-side end surface, and can secure a tensile strength, and a chain. The guide-side end surface of the link plate is made up of a flat portion formed by a flat surface parallel to a line connecting centers of connection holes at leading and trailing ends, and both end surface portions on both ends in the chain longitudinal direction of the flat portion. The both end surface portions are formed to come closer to the line connecting the centers of the leading-end and trailing-end connection holes as the both end surface portions extend further from the flat portion.

A bicycle chain includes a pair of outer plates, a pair of inner plates, and a connecting pin assembly. The pair of outer plates defines a width of the bicycle chain in a transverse direction, and the pair of inner plates is positioned at least partially between the pair of outer plates. The connecting pin assembly connects the pair of outer plates with the pair of inner plates and includes a first rocker pin, a second rocker pin, and a center pin between the first rocker pin and the second rocker pin in a longitudinal direction. A length of the center pin in the transverse direction is less than the width of the bicycle chain.

A bicycle chain includes a pair of outer plates, a pair of inner plates, and a connecting pin assembly. The pair of outer plates defines a width of the bicycle chain in a transverse direction, and the pair of inner plates is positioned at least partially between the pair of outer plates. The connecting pin assembly connects the pair of outer plates with the pair of inner plates and includes a first rocker pin, a second rocker pin, and a center pin between the first rocker pin and the second rocker pin in a longitudinal direction. A length of the center pin in the transverse direction is less than the width of the bicycle chain.

A method for controlling the length of a sprocket chain of a chain type includes alternately arranged inner chain links and outer chain links that are connected together by, means of a chain joint, wherein each outer chain link has two outer plates, each of which comprises two openings and two pins that are pressed into the openings of the outer plates, each pin of the outer chain links having a joint region, which contacts the inner chain link and has a joint diameter, and two joining regions, which are pressed into the openings of the outer plates and have a joining diameter. The method prevents the disadvantages known from the prior art and in particular leads to a simple chain length control. For this purpose, the method has the following steps: providing a pin set comprising a plurality of pins, wherein at least two of the pins of the pin set have different joint diameters in the joint regions; and for at least one of the pins of the pin set; the joint diameter of the joint region differs from the joining diameter of the joining regions; ascertaining the pin joint region diameter required for a specified chain length; selecting the pin with the ascertained joint region diameter from the pin set; pressing the joining regions of the pin into the openings in the outer plates; and completing the sprocket chain. The use of a pin in such a method and to a pin set for such a method is also provided.

A method for controlling the length of a sprocket chain of a chain type includes alternately arranged inner chain links and outer chain links that are connected together by, means of a chain joint, wherein each outer chain link has two outer plates, each of which comprises two openings and two pins that are pressed into the openings of the outer plates, each pin of the outer chain links having a joint region, which contacts the inner chain link and has a joint diameter, and two joining regions, which are pressed into the openings of the outer plates and have a joining diameter. The method prevents the disadvantages known from the prior art and in particular leads to a simple chain length control. For this purpose, the method has the following steps: providing a pin set comprising a plurality of pins, wherein at least two of the pins of the pin set have different joint diameters in the joint regions; and for at least one of the pins of the pin set; the joint diameter of the joint region differs from the joining diameter of the joining regions; ascertaining the pin joint region diameter required for a specified chain length; selecting the pin with the ascertained joint region diameter from the pin set; pressing the joining regions of the pin into the openings in the outer plates; and completing the sprocket chain. The use of a pin in such a method and to a pin set for such a method is also provided.

A chain for a chain drive includes alternating inner chain links and outer chain links, which are connected together in an articulated manner by means of a respective chain joint. Each outer chain link includes two outer plates, each of which comprises two openings and two pins, and the pins and openings are connected together by means of a respective compression connection such that the pins hold the outer plates at a distance from each other. The chain for a chain drive prevents the disadvantages known from the prior art and leading in particular to a higher fatigue strength. This is achieved in that a beveled joint is formed in the region of the compression connection between the pins and the openings in the outer plates.

A chain for a chain drive includes alternating inner chain links and outer chain links, which are connected together in an articulated manner by means of a respective chain joint. Each outer chain link includes two outer plates, each of which comprises two openings and two pins, and the pins and openings are connected together by means of a respective compression connection such that the pins hold the outer plates at a distance from each other. The chain for a chain drive prevents the disadvantages known from the prior art and leading in particular to a higher fatigue strength. This is achieved in that a beveled joint is formed in the region of the compression connection between the pins and the openings in the outer plates.

To provide a chain that can reduce friction loss, alleviate wear on sliding surfaces of a chain guide member, and reduce vibration and noise of the running chain. The chain is made up of a multiplicity of inner link plates and outer link plates alternately coupled together by connecting pins along the longitudinal direction of the chain. The height from a pitch line to a highest point on a backside of the plurality of inner link plates (backside height of the inner link plates) is different from the height from a pitch line to a highest point on a backside of the plurality of outer link plates (backside height of the outer link plates) by more than 0 and not greater than 0.5 mm.

To provide a chain that can reduce friction loss, alleviate wear on sliding surfaces of a chain guide member, and reduce vibration and noise of the running chain. The chain is made up of a multiplicity of inner link plates and outer link plates alternately coupled together by connecting pins along the longitudinal direction of the chain. The height from a pitch line to a highest point on a backside of the plurality of inner link plates (backside height of the inner link plates) is different from the height from a pitch line to a highest point on a backside of the plurality of outer link plates (backside height of the outer link plates) by more than 0 and not greater than 0.5 mm.