Sugiura Seisakusho Co., Ltd.

Kabushiki Kaisha Tokai Rika Denki Seisakusho

Sugiura Seiksakusho Co., Ltd.

Keiji Nomura

Naoyuki Fujii

Toshihito Takai

Kenji Murata

Keita Nakane

Ryuji Suzuki

Makoto Torisu

To allow a user to more intuitively grasp processing executed in accordance with an operation. There is provided a control device including: a reception unit that receives an operation on at least one operation unit, and a control unit that sets, as a specific function, a function of executing at least one processing in accordance with contents of the operation received by the reception unit, and controls a notification unit to perform a notification in accordance with each of processing executed by the specific function.

Control device, system, and program

Structure of internal thread portion for preventing looseness and method of producing the same

It is an object of the invention to provide a structure of an internal thread portion for preventing looseness which structure allows a reduction in the torque required for the threaded engagement with an external-thread member and prevents a seizure. An exit end portion of a self-locking nut is taperingly contracted over the entire circumference thereof so as to form a contracted internal thread portion having a conical section. In addition, ridges of the contracted internal thread portion are provided with corrugation continuing circumferentially. The diameter of an inscribed circle which links the extremities of projections in the corrugation is smaller then the minor diameter of the external-thread member which is to be engaged threadedly with the internal thread portion. With the external-thread member threadedly engaged with the internal thread portion, a plurality of projections press the root or flanks of the external-thread member and are thereby elastically compressed by the reaction, so as to clamp the external-thread member from outside. In accordance with this arrangement, the tightening torque can be reduced and a seizure is prevented.

Nut having corrugated thread

The nut has a tool engaging region or a hexagonal region and a flange region provided on a thread end of the hexagonal region. A sloped step sloping at an angle to the center line of the nut is provided on the thread end. The sloped step (surface) is thus shaped of the annular form on the inner wall of the nut adjacent to the nut opening which faces outwardly of the nut and substantially extends along the loop.

Nut, bolt, and thread unit of female and male thread members

Growing community of inventors

Aichi, Japan

Keiji Nomura