Side-knock type mechanical pencil

A side-knock type mechanical pencil comprising:

• a barrel having a front end and a rear end;
• a lead feeding mechanism disposed in the barrel for axial movement within the barrel to feed a pencil lead toward the front end of the barrel;
• a knock button disposed in a side portion of the barrel for engagement with the lead feeding mechanism so that the knock button can be pressed inward in a radial direction of the barrel to move the lead feeding mechanism axially within the barrel to thereby feed the pencil lead toward the front end of the barrel;
• at least one lead restricting portion disposed in the barrel in a vicinity of the knock button for receiving the pencil lead, the lead restricting portion having a lead insertion hole for permitting the pencil lead to pass therethrough and a lead receiving portion for receiving the lead prior to passing through the lead insertion hole;
• and a plurality of lead passageways disposed in the barrel on opposite sides of the lead restricting portion for receiving the pencil lead, each of the lead passageways having an inner cross-sectional area larger than a cross-sectional area of the lead insertion hole of the lead restricting portion.

A side-knock type mechanical pencil comprising:

• a barrel having a front end and a rear end;
• a lead feeding mechanism having a tubular member disposed in the barrel for axial movement within the barrel to feed a pencil lead toward the front end of the barrel, the tubular member having a first end and a second end;
• a knock button disposed in a side portion of the barrel so that the knock button can be pressed inward in a radial direction of the barrel to move the tubular member axially within the barrel to thereby feed the pencil lead toward the front end of the barrel;
• a lead passageway disposed in the barrel for passing therethrough the pencil lead in a direction toward the front end of the barrel, the first end of the tubular member being closer to the lead passageway than the second end of the tubular member;
• and at least one lead receiving member disposed in the barrel for receiving the pencil lead and integrally connected to the first end of the tubular member, the lead receiving member having a lead insertion hole for permitting the pencil lead to pass therethrough and into the tubular member and a head portion having an external diameter approximately equal to an internal diameter of the barrel.

A side-knock type mechanical pencil comprising:

• a tubular body having a front end, a rear end and a storage section for storing pencil leads;
• a first tubular member mounted within the tubular body for axial movement along a lengthwise direction of the tubular body, the first tubular member having a lead passageway for receiving a pencil lead from the storage section of the tubular body;
• a second tubular member integrally connected to an end of the first tubular member for axial movement therewith, the second tubular member having a head portion and a tubular body portion having an external diameter smaller than an external diameter of the head portion, the head portion and the tubular body portion having a through-hole for permitting only one of the pencil leads from the storage section of the tubular body to pass therethrough and into the lead passageway of the first tubular member;
• a knock member mounted in a side portion of the tubular body for movement in a direction generally perpendicular to the lengthwise direction of the tubular body;
• and
• means interconnecting the knock member and the first tubular member when the knock member is moved in the direction generally perpendicular to the lengthwise direction of the tubular body for moving the first and second tubular members axially within the tubular body to thereby feed the pencil lead in the passageway of the first tubular member toward the front end of the tubular body.

A side-knock type mechanical pencil comprising:

• a barrel having a front end and a rear end;
• a lead feeding mechanism disposed in the barrel for axial movement within the barrel to feed a pencil lead toward the front end of the barrel, the lead feeding mechanism having a pair of first engagement portions;
• a knock button disposed in a side portion of the barrel so that the knock button can be pressed inward in a radial direction of the barrel, the knock button having a pair of second engagement portions for sliding engagement with the first engagement portions of the lead feeding mechanism when the knock button is pressed inward to thereby move the lead feeding mechanism axially within the barrel and feed the pencil lead toward the front end of the barrel, the second engagement portions having a surface which is oblique relative to a moving direction of the knock button and which slidingly engage the first engagement portions when the knock button is pressed inward, one of the second engagement portions slidingly engaging both of the first engagement portions when the knock button is pressed inward;
• a lead passageway for passing therethrough the pencil lead in a direction toward the front end of the barrel;
• and at least one lead receiving member disposed forwardly of the lead passageway for receiving the pencil lead.