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    • 4. 发明申请
    • Lead holding structure of mechanical pencil
    • 铅笔铅笔架结构
    • US20070172298A1
    • 2007-07-26
    • US10597774
    • 2004-03-10
    • Takeo FukumotoKyo NakayamaHitoshi Suzuki
    • Takeo FukumotoKyo NakayamaHitoshi Suzuki
    • B43K21/22
    • B43K21/22B43K21/16
    • [Purpose] To provide a lead holding structure of a mechanical pencil where a predetermined lead holding force is maintained so that a lead does not move even if a writing pressure is repeatedly applied to the lead and where a so-called biting-off of a lead (break) is prevented without damaging the lead in repeatedly sending forward and backward operations. [Configuration] An outer periphery 5b of a chuck 5 corresponding to a lead holding section 5a is composed of a peripheral surface (horizontal surface) 5c and a peripheral surface (inclined surface) 5d. The peripheral surface 5c extends from substantially the center of the outer periphery 5b to its forward end and is substantially parallel to an axis or inclined toward the axis. The peripheral surface 5d extends from substantially the center backward and is a surface orthogonal to the axis or inclined toward the axis. The inner periphery of a fastener 6 on which the outer periphery 5b of the chuck 5 is fitted is formed as an inclined surface 6a inclined backward to the axis at a predetermined angle. When the chuck 5 is fastened with the fastener 6 while holding a lead 10, the center of the chuck 5 is a contact point 5e at which the fastener 6 and the inclined surface are in contact with each other. Further, the point at which an orthogonal line from the contact point 5e to the inclined surface and the inner periphery 5a of the lead holding section of the chuck 5 intersects is a load application point 5f in lead holding, and the load application point 5f is substantially the center of a lead holding length C.
    • [目的]提供一种自动铅笔的引线保持结构,其中保持预定的引线保持力,使得即使对引线重复施加书写压力,引线也不会移动,并且所谓的咬合 防止引导(中断),而不会导致重复发送前进和后退操作的导致。 [构造]与引线保持部5a对应的卡盘5的外周5b由外周面(水平面)5c和周面(倾斜面)5d构成。 外周表面5c从外周边5B的大致中心延伸到其前端,并且基本上平行于轴线或者朝向轴线倾斜。 外周表面5d从大致中心向后延伸,并且是与轴线正交的表面或朝向轴线倾斜的表面。 紧固件6的内周,卡盘5的外周边5b与其相配合,形成为以预定角度向轴向后倾斜的倾斜面6a。 当夹具5在保持引线10的同时用紧固件6固定时,卡盘5的中心是紧固件6和倾斜表面彼此接触的接触点5e。 此外,从接触点5e到卡盘5的引线保持部的倾斜面和内周面5a的正交线相交的点是引线保持中的负载施加点5f,负载施加 点5f基本上是引线保持长度C的中心。
    • 5. 发明授权
    • Mechanical pencil
    • 自动铅笔
    • US08337107B2
    • 2012-12-25
    • US12866943
    • 2008-12-18
    • Norio OhsawaTakeo FukumotoYoshitoshi OsanoTakeshi KobayashiHirotake IzawaKyo Nakayama
    • Norio OhsawaTakeo FukumotoYoshitoshi OsanoTakeshi KobayashiHirotake IzawaKyo Nakayama
    • B43K21/22
    • B43K21/003B43K21/16B43K21/22
    • A writing lead (10) is grasped and released by reciprocation of a chuck (3) provided in a body cylinder (1) so as to inch the writing lead forward and a rotational drive mechanism is provided for rotationally driving a rotor (5) in one direction in conjunction with retreat operation by the writing pressure applied to the writing lead and forward movement by releasing the writing pressure. A pipe support member (8) for supporting a pipe end (7) is accommodated in a base (1A) which constitutes a front end portion of the body cylinder, and a retreat drive mechanism is provided for gradually retreating the pipe support member into the body cylinder in conjunction with rotational drive operation of the rotor. With the above-mentioned structure, a pipe-slide type mechanical pencil can maintain an amount of projection of the writing lead from the pipe end within a certain range.
    • 一个写入引线(10)通过设置在主体滚筒(1)中的卡盘(3)的往复运动而被夹紧和释放,以便使书写引线向前平齐,并且提供一个旋转驱动机构用于旋转地驱动转子 通过施加到书写笔的书写压力和撤销操作的一个方向,通过释放书写压力来向前移动。 用于支撑管端(7)的管支撑构件(8)容纳在构成主体筒体的前端部的基部(1A)中,并且设置有后退驱动机构,用于逐渐将管支撑构件缩回到 结合转子的旋转驱动操作。 利用上述结构,管滑动型自动铅笔可以将写入线从管端的突出量保持在一定范围内。
    • 6. 发明申请
    • MECHANICAL PENCIL
    • 自动铅笔
    • US20110002728A1
    • 2011-01-06
    • US12882785
    • 2010-09-15
    • Hirotake IzawaTakeo FukumotoNoio OhsawaKyo NakayamaYoshitoshi Osano
    • Hirotake IzawaTakeo FukumotoNoio OhsawaKyo NakayamaYoshitoshi Osano
    • B43K21/18
    • B43K21/00B43K21/22
    • A chuck unit (4) for grasping a writing lead (10) and a rotor (6) arranged to be movable in a direction of rotation and an axial direction within a body cylinder (1) are provided. First and second cam faces (6a) and (6b) are respectively formed at one end face and another end face of the rotor in the axial direction, and first and second fixed cam faces (13a) and (17a) are arranged on the body cylinder side to face the first and second cam faces respectively. The first cam face in the rotor is brought into abutment with and meshed with the first fixed cam face by retreat operation of the chuck unit under writing pressure, and the second cam face in the rotor is brought into abutment with and meshed with the second fixed cam face by releasing the writing pressure, so that the rotor rotates, whereby the writing lead also rotates.
    • 提供一种用于抓取书写引线(10)的卡盘单元(4)和设置成可在主体滚筒(1)内沿旋转方向和轴向移动的转子(6)。 第一和第二凸轮面(6a)和(6b)分别形成在轴向的一个端面和转子的另一个端面上,并且第一和第二固定凸轮面(13a)和(17a)布置在主体 气缸侧分别面对第一和第二凸轮面。 通过在书写压力下卡盘单元的后退操作使转子中的第一凸轮面与第一固定凸轮面邻接并与第一固定凸轮面啮合,并且转子中的第二凸轮面与第二固定凸轮面邻接并与第二固定凸轮面啮合 通过释放书写压力来使凸轮面转动,使得转子旋转,由此书写引线也旋转。
    • 7. 发明授权
    • Mechanical pencil
    • 自动铅笔
    • US08328446B2
    • 2012-12-11
    • US12882785
    • 2010-09-15
    • Hirotake IzawaTakeo FukumotoNorio OhsawaKyo NakayamaYoshitoshi Osano
    • Hirotake IzawaTakeo FukumotoNorio OhsawaKyo NakayamaYoshitoshi Osano
    • B43K21/22
    • B43K21/00B43K21/22
    • A chuck unit (4) for grasping a writing lead (10) and a rotor (6) arranged to be movable in a direction of rotation and an axial direction within a body cylinder (1) are provided. First and second cam faces (6a) and (6b) are respectively formed at one end face and another end face of the rotor in the axial direction, and first and second fixed cam faces (13a) and (17a) are arranged on the body cylinder side to face the first and second cam faces respectively. The first cam face in the rotor is brought into abutment with and meshed with the first fixed cam face by retreat operation of the chuck unit under writing pressure, and the second cam face in the rotor is brought into abutment with and meshed with the second fixed cam face by releasing the writing pressure, so that the rotor rotates, whereby the writing lead also rotates.
    • 提供一种用于抓取书写引线(10)的卡盘单元(4)和设置成可在主体滚筒(1)内沿旋转方向和轴向移动的转子(6)。 第一和第二凸轮面(6a)和(6b)分别形成在轴向的一个端面和转子的另一个端面上,并且第一和第二固定凸轮面(13a)和(17a)布置在主体 气缸侧分别面对第一和第二凸轮面。 通过在书写压力下卡盘单元的后退操作使转子中的第一凸轮面与第一固定凸轮面邻接并与第一固定凸轮面啮合,并且转子中的第二凸轮面与第二固定凸轮面邻接并与第二固定凸轮面啮合 通过释放书写压力来使凸轮面转动,使得转子旋转,由此书写引线也旋转。
    • 8. 发明申请
    • Mechanical Pencil
    • 自动铅笔
    • US20090180824A1
    • 2009-07-16
    • US12308079
    • 2007-06-01
    • Hirotake IzawaTakeo FukumotoNorio OhsawaKyo NakayamaYoshitoshi Osano
    • Hirotake IzawaTakeo FukumotoNorio OhsawaKyo NakayamaYoshitoshi Osano
    • B43K21/18
    • B43K21/00B43K21/22
    • A chuck unit (4) for grasping a writing lead (10) and a rotor (6) arranged to be movable in a direction of rotation and an axial direction within a body cylinder (1) are provided. First and second cam faces (6a) and (6b) are respectively formed at one end face and another end face of the rotor in the axial direction, and first and second fixed cam faces (13a) and (17a) are arranged on the body cylinder side to face the first and second cam faces respectively. The first cam face in the rotor is brought into abutment with and meshed with the first fixed cam face by retreat operation of the chuck unit under writing pressure, and the second cam face in the rotor is brought into abutment with and meshed with the second fixed cam face by releasing the writing pressure, so that the rotor rotates, whereby the writing lead also rotates. Thus, it is possible to provide a mechanical pencil having a rotational drive mechanism in which the writing lead can be rotated by using the writing pressure.
    • 提供一种用于抓取书写引线(10)的卡盘单元(4)和设置成可在主体滚筒(1)内沿旋转方向和轴向移动的转子(6)。 第一和第二凸轮面(6a)和(6b)分别形成在轴向的一个端面和转子的另一个端面上,并且第一和第二固定凸轮面(13a)和(17a)布置在主体 气缸侧分别面对第一和第二凸轮面。 通过在书写压力下卡盘单元的后退操作使转子中的第一凸轮面与第一固定凸轮面邻接并与第一固定凸轮面啮合,并且转子中的第二凸轮面与第二固定凸轮面邻接并与第二固定凸轮面啮合 通过释放书写压力来使凸轮面转动,使得转子旋转,由此书写引线也旋转。 因此,可以提供一种具有旋转驱动机构的自动铅笔,其中通过使用书写压力可以使写入引线旋转。
    • 9. 发明授权
    • Mechanical pencil
    • 自动铅笔
    • US07815385B2
    • 2010-10-19
    • US12636062
    • 2009-12-11
    • Hirotake IzawaTakeo FukumotoNorio OhsawaKyo NakayamaYoshitoshi Osano
    • Hirotake IzawaTakeo FukumotoNorio OhsawaKyo NakayamaYoshitoshi Osano
    • B43K21/22
    • B43K21/00B43K21/22
    • A chuck unit (4) for grasping a writing lead (10) and a rotor (6) arranged to be movable in a direction of rotation and an axial direction within a body cylinder (1) are provided. First and second cam faces (6a) and (6b) are respectively formed at one end face and another end face of the rotor in the axial direction, and first and second fixed cam faces (13a) and (17a) are arranged on the body cylinder side to face the first and second cam faces respectively. The first cam face in the rotor is brought into abutment with and meshed with the first fixed cam face by retreat operation of the chuck unit under writing pressure, and the second cam face in the rotor is brought into abutment with and meshed with the second fixed cam face by releasing the writing pressure, so that the rotor rotates, whereby the writing lead also rotates.
    • 提供一种用于抓取书写引线(10)的卡盘单元(4)和设置成可在主体滚筒(1)内沿旋转方向和轴向移动的转子(6)。 第一和第二凸轮面(6a)和(6b)分别形成在轴向的一个端面和转子的另一个端面上,并且第一和第二固定凸轮面(13a)和(17a)布置在主体 气缸侧分别面对第一和第二凸轮面。 通过在书写压力下卡盘单元的后退操作使转子中的第一凸轮面与第一固定凸轮面邻接并与第一固定凸轮面啮合,并且转子中的第二凸轮面与第二固定凸轮面邻接并与第二固定凸轮面啮合 通过释放书写压力来使凸轮面转动,使得转子旋转,由此书写引线也旋转。