公开(公告)号：US5765980A

公开(公告)日：1998-06-16

申请号：US822638

申请日：1997-03-21

申请人： Katsunori Sudo ,  Yukichi Iwata

发明人： Katsunori Sudo ,  Yukichi Iwata

IPC分类号： F16B23/00 ,  F16B35/06

CPC分类号： F16B23/0023 ,  F16B23/0076 ,  Y10S411/911 ,  Y10S411/919

摘要： A cross-recessed head screw has in its head a tool engagement recess including first releasing surfaces which are adapted to be engaged with generally flat front edges of an end of a cross-headed tip screwdriver and have the function of moving the screwdriver backward when the screwdriver is turned in the reverse direction for loosening the screw. The tool engagement recess further has second releasing surfaces each contiguous to a corresponding one of the first releasing surfaces and serve to guide the backward movement of the screwdriver as the latter is turned in the screw-loosening reverse direction. By virtue of engagement between the first releasing surfaces and the front edges of the screwdriver, the reverse rotation of the screwdriver produces only a small friction torque which is quite insufficient to cause rotation of the screw in the screw-loosening direction. The first releasing surfaces project from the second releasing surfaces toward the axis of the tool engagement recess, so that when a screwdriver one size smaller than the specified screwdriver is inserted into the tool engagement recess, a tip end of the one-size-smaller screwdriver comes into abutment with only a small area extending in the vicinity of inner edges of the respective first releasing surface. With this small contact area provided between the tool tip and the first releasing surfaces, the screwdriver is likely to slip or turn freely when it is rotated in the reverse direction.

摘要翻译： 十字凹头螺钉在其头部具有工具接合凹槽，其包括第一释放表面，其适于与十字头尖端螺丝刀的端部的大致平坦的前边缘接合，并且具有当螺丝刀向后移动时的功能 螺丝刀向相反方向旋转，松动螺丝。 工具接合凹槽还具有第二释放表面，每个第二释放表面与第一释放表面中的对应的一个相邻，并且用于引导螺丝刀在螺钉松动反向方向上转动时的向后移动。 由于螺丝刀的第一释放表面和前边缘之间的接合，螺丝刀的反向旋转产生的摩擦转矩小，这在螺丝松动方向上不足以使螺杆旋转。 第一释放表面从第二释放表面朝向工具接合凹槽的轴线突出，使得当将一个尺寸小于指定的螺丝刀的螺丝刀插入到工具接合凹部中时，一个小尺寸的螺丝刀的尖端 仅与在相应的第一释放表面的内边缘附近延伸的小区域抵接。 通过在工具尖端和第一释放表面之间设置的这个小的接触区域，当螺丝刀沿相反方向旋转时，螺丝刀可能会自由滑动或转动。

公开(公告)号：US2826144A

公开(公告)日：1958-03-11

申请号：US45000054

申请日：1954-08-16

申请人： YUKICHI IWATA

发明人： YUKICHI IWATA

IPC分类号： B61L5/20 ,  F42B4/26 ,  F42C7/00

CPC分类号： F42C7/00 ,  B61L5/20 ,  F42B4/26

公开(公告)号：US5876168A

公开(公告)日：1999-03-02

申请号：US726043

申请日：1996-10-07

申请人： Yukichi Iwata

发明人： Yukichi Iwata

IPC分类号： F16B39/30 ,  F16B39/20 ,  F16B35/04

CPC分类号： F16B39/30

摘要： The present invention provides a male screwthread that does not loosen. In a male screwthread that has a thread ridge formed on an outer peripheral surface of an axial portion and a head portion that forms a tool mating means at one end of this axial portion, loosening and return between the male screwthread and a female screwthread is prevented (self-locking) by a configuration in which the thread ridge thereof is formed to have a major diameter that is larger than a reference value and the half-angle of the head-portion side of the thread ridge is formed to be less than 30 degrees.

摘要翻译： 本发明提供一种不松动的公螺纹。 在具有形成在轴向部分的外周面上的螺纹脊和在该轴向部分的一端形成工具配合装置的头部的公螺纹中，防止在公螺纹和母螺纹之间的松动和返回 （自锁）通过其螺纹脊形成为具有大于参考值的大直径并且螺纹脊的头部侧的半角形成为小于30°的结构 度。

公开(公告)号：USD285651S

公开(公告)日：1986-09-16

申请号：US554355

申请日：1983-11-22

申请人： Yukichi Iwata ,  Yasuo Suzuki

设计人： Yukichi Iwata ,  Yasuo Suzuki

公开(公告)号：US4299520A

公开(公告)日：1981-11-10

申请号：US109588

申请日：1980-01-04

申请人： Yukichi Iwata

发明人： Yukichi Iwata

IPC分类号： F16B37/08 ,  F16B37/00 ,  F16B39/286

CPC分类号： F16B37/0842 ,  Y10S411/03

摘要： A drive nut has a hollow interior in which a plurality of cantilever clamping members which are arranged with equal spacing around a common circle and extend substantially parallel to the nut centerline, and which are rigidly and integrally fixed at their lower ends to the nut inner side near the bottom seating surface thereof. The clamping members thus form a substantially cylindrical passage through which a mating member with a male screw thread is forcibly driven axially from the side of the seating surface relative to the nut to be quickly but positively locked by the drive nut.

摘要翻译： 驱动螺母具有中空的内部，多个悬臂夹持构件以相等的间隔围绕公共圆布置并且基本上平行于螺母中心线延伸，并且在其下端刚性地和一体地固定在螺母内侧 靠近其底座的表面。 因此，夹紧构件形成基本上圆柱形的通道，具有外螺纹的配合构件通过该通道从就座表面相对于螺母的侧面被强制地驱动以快速地被驱动螺母锁定。

公开(公告)号：US5882160A

公开(公告)日：1999-03-16

申请号：US839918

申请日：1997-04-21

申请人： Yukichi Iwata

发明人： Yukichi Iwata

IPC分类号： F16B39/30 ,  F16B39/28

CPC分类号： F16B39/30 ,  Y10S411/938

摘要： The present invention relates to a male and female screw set wherein the male screw comprises at least a projecting part pressing against the flank plane of the female screw when the male and female screws are engaged. A dimensional difference is formed between the pitches of the female and male screw threads. When the female and male screws are engaged, the advancing side flank plane of the female screw thread is contacted by the advancing side flank plane of the male screw thread, while the other receding side flank plane of the female screw thread is contacted by other receding side flank plane of the male screw thread, and these respective flank planes are pressed together with tightening. In addition, the thread angle of the female screw is made approximately 1 degree 20 minutes to 3 degrees 30 minutes larger with respect to the male screw, so that when the male screw is taken as the standard thread angle, the respective flank angles of the male and female screw load threads mutually contact at the crest of the male screw when loaded, thereby preventing loosening and dislodging when the male and female screws are engaged.

摘要翻译： 本发明涉及一种阳螺纹组件和内螺纹组件，其中当阳螺母和内螺纹接合时，外螺纹包括至少一个压靠阴螺纹的侧面的突出部分。 在阴螺纹和外螺纹的间距之间形成尺寸差异。 当内螺纹和内螺纹接合时，内螺纹的前进侧面与外螺纹的前进侧面接触，而内螺纹的另一个后侧面与其它后退接触 外螺纹的侧面平面，并且这些相应的侧面在紧固时被压在一起。 此外，内螺纹的螺纹角度相对于外螺纹大约为20分钟至3度30分，比较大，因此当外螺纹作为标准螺纹角度时，相应的侧面角度 阳螺纹和阴螺纹负载螺纹在加载时在外螺纹的顶部相互接触，从而防止当阳螺母和内螺纹接合时松动和脱落。

公开(公告)号：US5672037A

公开(公告)日：1997-09-30

申请号：US547998

申请日：1995-10-25

申请人： Yukichi Iwata

发明人： Yukichi Iwata

IPC分类号： F16B39/30 ,  F16B35/04

CPC分类号： F16B39/30 ,  Y10S411/938

摘要： The present invention relates to a male and female screw set wherein the male screw comprises at least a projecting part pressing against the flank plane of the female screw when the male and female screws are engaged. A dimensional difference is formed between the pitches of the female and male screw threads. When the female and male screws are engaged, the advancing side flank plane of the female screw thread is contacted by the advancing side flank plane of the male screw thread, while the other receding side flank plane of the female screw thread is contacted by other receding side flank plane of the male screw thread, and these respective flank planes are pressed together with tightening. In addition, the thread angle of the female screw is made approximately 1 degree 20 minutes to 3 degrees 30 minutes larger with respect to the male screw, so that when the male screw is taken as the standard thread angle, the respective flank angles of the male and female screw load threads mutually contact at the crest of the male screw when loaded, thereby preventing loosening and dislodging when the male and female screws are engaged.

摘要翻译： 本发明涉及一种阳螺纹组件和内螺纹组件，其中当阳螺母和内螺纹接合时，外螺纹包括至少一个压靠阴螺纹的侧面的突出部分。 在阴螺纹和外螺纹的间距之间形成尺寸差异。 当内螺纹和内螺纹接合时，内螺纹的前进侧面与外螺纹的前进侧面接触，而内螺纹的另一个后侧面与其它后退接触 外螺纹的侧面平面，并且这些相应的侧面在紧固时被压在一起。 此外，内螺纹的螺纹角度相对于外螺纹大约为20分钟至3度30分，比较大，因此当外螺纹作为标准螺纹角度时，相应的侧面角度 阳螺纹和阴螺纹负载螺纹在加载时在外螺纹的顶部相互接触，从而防止当阳螺母和内螺纹接合时松动和脱落。