JP3012347U - Split circular nut - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to reduce the frictional force of the screw during rotation to facilitate turning. [Structure] A peripheral groove 5 into which an elastic ring 4 is fitted is provided on the outer periphery, a screw hole 3 for screwing with a bolt 2 is formed at the center, and the screw hole 3 is divided into two parts in the longitudinal direction so as to pass through the center line of the screw hole 3. A circular nut 1 is formed by superposing two unit bodies 1a and 1b which are divided into two and tightened by an elastic ring 4 which is fitted into the circumferential groove 5, and a rotating tool 7 is provided on the upper surface side of the circular nut 1 along a line along the dividing line. A structure provided with a slit groove 6 to be fitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a split circular nut obtained by vertically splitting a circular nut that is tightened by screwing various things such as a shaft of scissors onto a screw shaft.

[0002]

[Prior art]

 Although nuts that are screwed into a screw shaft for tightening are very common, most of the nuts used for the above-mentioned scissors are circular because they are decorative. In addition, this circular nut is divided into two parts in order to prevent loosening, and the two nuts are known to be used by bringing them into close contact with each other by using an elastic spring ring. .

[0003]

[Problems to be solved by the device]

 The circular nuts that are split into two and use a spring ring are pulled together by the spring ring described above, so they are pressed against the threaded portion of the screw shaft when screwed in, which is effective in preventing loosening. When turning the nut by hand, there was a drawback that it was difficult to turn due to the strong frictional resistance of the screw surface.

[0004]

[Means for Solving the Problems]

 In view of the above-mentioned problem, the present invention addresses the problem by dividing the above into two pieces, stacking the divided unit bodies and using a circular nut and using an elastic ring, along the dividing line of the nut. A slotted groove is provided from the top surface, and the rotating means fitted in this slotted groove spreads the divided unit body in the opening direction, reducing the frictional force of the screw and making it easier to turn around. It provides nuts.

[0005]

[Action]

 A circular nut main body 1 is provided in which a peripheral groove 5 is provided on the outer periphery and the two divided unit bodies 1a and 1b are overlapped with each other, and an elastic ring 4 is fitted into the peripheral groove 5 and pulled together and tightened. When it is screwed into the part, a screwdriver is fitted in the slit groove 6 provided on the upper surface of the circular nut body 1 and the circular nut body 1 is rotated in the rotating direction by the driver. It acts against and can open the split part and rotate it easily. Further, when the rotation of the driver 7 is stopped, the elastic ring 4 fitted in the circumferential groove 6 acts to clamp the divided unit bodies 1a and 1b so that the screw portion is pressed against the screw portion of the bolt 2. Therefore, frictional force is not applied and it does not loosen. That is, the circular nut body 1 can be easily rotated and the tightening can be surely performed without loosening.

[0006]

【Example】

 FIG. 1 shows an embodiment of a split circular nut according to the present invention, which will be specifically described below with reference to the drawings.

Reference numeral 1 denotes a circular nut body, which has a screw hole 3 at the center for screwing with a bolt 2 and a peripheral groove 5 on the outer periphery for fitting an elastic ring 4 having elasticity. In addition, the upper surface is provided with a slit groove 6 into which a driver 7 for transmitting rotation is inserted. Further, the circular nut body 1 is divided into two so as to pass through the center line of the slit groove 6, and The unit bodies 1a and 1b are fitted to each other by the elastic ring 4 fitted in the circumferential groove 5 so as to be superposed on each other so as to overlap each other and to be tightened in the closing direction.

When a screwdriver 7 is inserted in the slot groove 6 and a force is applied to the circular nut body 1 in the rotational direction, the divided surfaces are expanded in the opening direction so that the contact with the bolt 2 is loosened. is there.

[0009]

【effect】

 According to the present invention, a circular nut main body composed of a unit body divided as described above and an elastic ring fitted in a circumferential groove for tightening the unit body is provided in a slit groove along a dividing line provided on the circular nut. Insert a rotating tool such as a screwdriver, and open the circular nut unit to the left and right by the twisting motion of the rotating tool, and the unit that has been pressed against the screw part by this opening will loosen the screw contact and loosen. Friction is reduced and lighter and the nut can be rotated. When the twisting motion of the rotating tool is stopped, the unit body of the circular nut is pulled by each other by the elastic force of the elastic ring fitted in the circumferential groove, pulling each other and acting in the direction of closing the unit body, and is pressed against the threaded portion of the bolt. It has the effect of preventing loosening and fixing with friction.

[Brief description of drawings]

FIG. 1 is a perspective view of a circular nut according to the present invention.

FIG. 2 is a plan view in which a part of the circular nut of FIG. 1 is sectioned.

FIG. 3 is a front view in which a half of FIG. 1 is cross-sectioned.

FIG. 4 is a front view when the circular nut of FIG. 3 is screwed into a bolt using a screwdriver.

FIG. 5 is an exploded view of a circular nut.

[Explanation of symbols]

 1 Circular nut body 1a, 1b Unit 2 Bolt 3 Screw hole 4 Resilient ring 5 Circumferential groove 6 Slot groove 7 Driver

Claims (1)

[Scope of utility model registration request] 1. A peripheral groove for fitting a stretchable elastic ring is provided on the outer periphery, and a screw hole for screwing a screw portion of a screw shaft is formed at the center, and a vertical hole is formed so as to pass through the center line of the screw hole. In a circular nut which is constructed by superposing two unit bodies divided in the direction and tightened by an elastic ring fitted in the circumferential groove, a rotating tool such as a screwdriver is fitted on the upper surface side of the circular nut along the dividing line. A split circular nut featuring a slot groove.