Gear made of resin and image forming device having the resin gear
    2.
    发明授权
    Gear made of resin and image forming device having the resin gear 有权
    由树脂制成的齿轮和具有树脂齿轮的成像装置

    公开(公告)号:US07543517B2

    公开(公告)日:2009-06-09

    申请号:US11296523

    申请日:2005-12-06

    Abstract: A gear made of a resin including a cylindrical toothed portion formed at a radially outer location, a shaft-supporting section formed at a radially inner location around the rotational center of the toothed portion, and a thin plate-shaped web connecting the shaft-supporting section and the toothed portion to each other, wherein the web has a circumferential rib concentric with the toothed portion inside the toothed portion, and a plurality of diametrical ribs diametrically connecting the circumferential rib and the shaft-supporting section to each other along the side of the web, each of the diametrical ribs being formed by a first diametrical rib portion extending obliquely in a direction opposite from a normal rotational direction from the outer periphery of the shaft-supporting section, and a second diametrical rib portion extending obliquely in a direction opposite from an opposite rotational direction from the outer periphery of the shaft-supporting section.

    Abstract translation: 一种由树脂构成的齿轮,包括形成在径向外部位置处的圆柱形齿形部分,形成在围绕所述齿形部分的旋转中心的径向内部位置处的轴支撑部分和连接轴支撑的薄板状腹板 并且所述带齿部分彼此相对,其中所述腹板具有与所述齿形部分内部的所述齿形部分同心的圆周肋,以及沿着所述齿形部分的侧面将所述周向肋和所述轴支撑部分彼此径向连接的多个直径肋 所述腹板,每个所述直径肋由与所述轴支撑部的外周沿与正常旋转方向相反的方向倾斜地延伸的第一直径肋部形成,所述第二直径肋部沿相反方向倾斜地延伸 从与轴支撑部的外周相反的旋转方向。

    Gear made of resin and image forming device having the resin gear

    公开(公告)号:US20060081082A1

    公开(公告)日:2006-04-20

    申请号:US11296523

    申请日:2005-12-06

    Abstract: A gear made of a resin including a cylindrical toothed portion formed at a radially outer location, a shaft-supporting section formed at a radially inner location around the rotational center of the toothed portion, and a thin plate-shaped web connecting the shaft-supporting section and the toothed portion to each other, wherein the web has a circumferential rib concentric with the toothed portion inside the toothed portion, and a plurality of diametrical ribs diametrically connecting the circumferential rib and the shaft-supporting section to each other along the side of the web, each of the diametrical ribs being formed by a first diametrical rib portion extending obliquely in a direction opposite from a normal rotational direction from the outer periphery of the shaft-supporting section, and a second diametrical rib portion extending obliquely in a direction opposite from an opposite rotational direction from the outer periphery of the shaft-supporting section.

    Gear made of resin, image forming device having the resin gear and rotary gearing device made of resin
    4.
    发明授权
    Gear made of resin, image forming device having the resin gear and rotary gearing device made of resin 有权
    树脂齿轮,具有树脂齿轮的成像装置和由树脂制成的旋转传动装置

    公开(公告)号:US07004046B2

    公开(公告)日:2006-02-28

    申请号:US10820672

    申请日:2004-04-08

    Abstract: A gear made of a resin including substantially annular toothed portion formed at a radially outer location, a shaft-supporting section formed at a radially inner location around a rotational center of the toothed portion, and a web connecting the shaft-supporting section and the toothed portion to each other. A circumferential rib is formed on the web concentrically with the toothed portion, and diametrical ribs are also formed on the web radiately to connect the circumferential rib and the shaft-supporting section to each other in a radial direction.

    Abstract translation: 由形成在径向外部位置的基本上环形的齿形部分的树脂制成的齿轮,形成在围绕所述齿形部分的旋转中心的径向内部位置处的轴支撑部分,以及连接所述轴支撑部分和所述齿状部分 部分彼此。 在卷筒纸上与齿形部分同心地形成周向肋条,并且在腹板上也形成径向肋,以将周向肋和轴支撑部分沿径向相互连接。

    Mold type plastic gear
    5.
    发明授权
    Mold type plastic gear 失效
    模具类塑料齿轮

    公开(公告)号:US6070484A

    公开(公告)日:2000-06-06

    申请号:US54256

    申请日:1998-04-02

    Abstract: A molded plastic circular gear which has removed its wall portions on the inside of a tooth root of its circumferential gear teeth portion. The gear has a circular rim formed at a distance from and on an inside of the tooth root. The gear is further formed by injection of resin through gates located in the web portion of the inside of the rim. The gear is further characterized in that the thickness in the axial direction of the web portion of the inside of the rim is made larger than that of the web portion on the outside of the rim.

    Abstract translation: 一种模制塑料圆形齿轮,其已经在其周向齿轮齿部分的齿根的内侧去除其壁部分。 齿轮具有形成在牙根的内部和内侧的距离处的圆形边缘。 通过将树脂注入位于轮辋内部的腹板部分中的门进一步形成齿轮。 齿轮的特征还在于,轮辋内部的腹板部分的轴向厚度大于轮辋外侧腹板部分的厚度。

    Gear made of resin, image-forming device, and rotation-transmitting means made of resin
    6.
    发明授权
    Gear made of resin, image-forming device, and rotation-transmitting means made of resin 失效
    由树脂制成的齿轮,成像装置和由树脂制成的旋转传递装置

    公开(公告)号:US07036393B2

    公开(公告)日:2006-05-02

    申请号:US09870279

    申请日:2001-05-30

    Abstract: A gear 1 made of a resin includes webs 5 (5a and 5b) formed so that the rigidity of the web is increased by a first circumferential rib 8, a second circumferential rib 10, first diametrical ribs 11 and second diametrical ribs 12, and the circumferential sectional shape of the outermost web 5c is a corrugated shape, whereby the rigidity of the outermost web 5c is increased. As a result, it is possible to increase the rigidity of the outermost web 5c without increasing of the thickness of the outermost web 5c; to form a toothed portion 6 with a high accuracy; to reduce the deformation (for example, the amount of displacement of the toothed portion 6 and a shaft-supporting portion 4 in a rotating direction) due to an external force; and to enhance the rotation-transmitting accuracy. In this gear 1, a vibration and a noise due to the vibration can be reduced by increasing the rigidity of the web.

    Abstract translation: 由树脂制成的齿轮1包括形成为通过第一周向肋8,第二周向肋10,第一直径肋11和第二直径肋12的腹板的刚度而增加的腹板5(5a和5b) 并且最外面的卷筒纸5c的圆周截面形状是波纹形状,由此最外面的卷筒纸5c的刚性增加。 结果,可以在不增加最外侧薄片5c的厚度的情况下增加最外侧薄片5c的刚性; 以高精度形成齿部6; 由于外力而减小变形(例如,齿部6和轴支承部4在旋转方向上的位移量) 并提高旋转传递精度。 在该齿轮1中,通过提高卷筒纸的刚性,可以减少振动引起的振动和噪音。

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