A multicolor writing instrument with an automatic return function includes a lower housing having a hollow cylindrical shape; an upper housing connected to an upper portion of the lower housing and formed with locking steps; a clip member hingedly provided on the upper housing so as to be movable about a hinge shaft; a coil spring resiliently installed between the clip member and the upper housing; pen cores filled with at least two different color inks; knobs having ends fitted into the respective pen cores; return springs resiliently installed between the pen cores and the knobs; and a return member formed integrally with the clip member on one side of the hinge shaft and toward the respective knobs.

A multicolor writing instrument with an automatic return function includes a lower housing having a hollow cylindrical shape; an upper housing connected to an upper portion of the lower housing and formed with locking steps; a clip member hingedly provided on the upper housing so as to be movable about a hinge shaft; a coil spring resiliently installed between the clip member and the upper housing; pen cores filled with at least two different color inks; knobs having ends fitted into the respective pen cores; return springs resiliently installed between the pen cores and the knobs; and a return member formed integrally with the clip member on one side of the hinge shaft and toward the respective knobs.

A multi-function writing implement comprises a pen shaft, a colored pen assembly, and an erasing pen assembly. The colored pen assembly is arranged at one end of the pen shaft. The colored pen assembly includes a cartridge seat, a nib seat, a plurality of colored cartridges, a plurality of relay cartridges, and a plurality of colored ink cotton tubes. The cartridge seat is connected to the pen shaft. One end of the nib seat has a plurality of cartridge slots. The colored cartridges are respectively arranged at the cartridge slots. The relay cartridges are respectively connected to the colored cartridges and arranged in the cartridge seat. The colored ink cotton tubes are respectively connected to the relay cartridges and arranged in the pen shaft and the cartridge in parallel. The erasing pen assembly is arranged at the other end of the pen shaft opposite to the colored pen assembly.

Multifunction writing instrument comprising a body extending in an axial direction and housing at least two retractable writing elements and a ring portion movable in rotation. The ring portion having at least as many pairs of guide surfaces as retractable writing elements. The writing elements include buttons. Each button is configured to cooperate with a respective one of the pair of guide surfaces of the ring portion. Actuation of the button of a writing element facilitates movement of the writing element from the retracted position to the writing position and returns any of the other writing elements in the writing position to the retracted position, whereby at most, one writing element is in the writing position.

Multifunction writing instrument comprising a body extending in an axial direction and housing at least two retractable writing elements and a ring portion movable in rotation. The ring portion having at least as many pairs of guide surfaces as retractable writing elements. The writing elements include buttons. Each button is configured to cooperate with a respective one of the pair of guide surfaces of the ring portion. Actuation of the button of a writing element facilitates movement of the writing element from the retracted position to the writing position and returns any of the other writing elements in the writing position to the retracted position, whereby at most, one writing element is in the writing position.

A multifunction writing instrument comprising a body extending along an axial direction and receiving at least two retractable writing elements, each retractable writing element comprising a writing tip, a reservoir and a button, each retractable writing element being movable between a writing position in which the writing tip extends from the body and a retracted position in which the writing tip is retracted within the body, each retractable writing element being connected to an electronic unit in order to detect which retractable writing element is in the writing position.

A multifunction writing instrument comprising a body extending along an axial direction and receiving at least two retractable writing elements, each retractable writing element comprising a writing tip, a reservoir and a button, each retractable writing element being movable between a writing position in which the writing tip extends from the body and a retracted position in which the writing tip is retracted within the body, each retractable writing element being connected to an electronic unit in order to detect which retractable writing element is in the writing position.

A multifunction writing instrument comprising a body extending along an axial direction and receiving at least two retractable writing elements, each retractable writing element comprising a writing tip, a reservoir and a button, each retractable writing element being movable between a writing position in which the writing tip extends from the body and a retracted position in which the writing tip is retracted within the body, each retractable writing element being connected to an electronic unit in order to detect which retractable writing element is in the writing position.

A multifunction writing instrument comprising a body extending along an axial direction and receiving at least two retractable writing elements, each retractable writing element comprising a writing tip, a reservoir and a button, each retractable writing element being movable between a writing position in which the writing tip extends from the body and a retracted position in which the writing tip is retracted within the body, each retractable writing element being connected to an electronic unit in order to detect which retractable writing element is in the writing position.

Multifunction writing instrument comprising a body extending in an axial direction and housing at least two retractable writing elements and a ring portion movable in rotation. The ring portion having at least as many pairs of guide surfaces as retractable writing elements. The writing elements include buttons. Each button is configured to cooperate with a respective one of the pair of guide surfaces of the ring portion. Actuation of the button of a writing element facilitates movement of the writing element from the retracted position to the writing position and returns any of the other writing elements in the writing position to the retracted position, whereby at most, one writing element is in the writing position.