JP2001239468A - Torque adapter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an adapter that can withstand high torque. SOLUTION: A hexagonal pyramid concave portion is formed on an inner peripheral surface of a cylindrical main body having a driving quadrangular hole formed on one end surface, and a circumferential portion is formed at the next position.
The end is an open end, a drive shaft having a conical projection projecting into the hexagonal pyramid recess is fitted into the main body, and several inclined grooves in which roller pins fit around the conical projection are recessed. A torque adapter, wherein a plurality of disc springs pressed by roller pins are superposed and housed on the circumferential portion, and a receiving body for receiving the movement of the disc spring is attached to the open end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque adapter used for a socket or the like.

[0002]

SUMMARY OF THE INVENTION An object of the present invention is to provide an adapter which can withstand high torque.

[0003]

The means of the present invention are as follows.

[0004] A hexagonal pyramid concave portion and a circular portion are formed on the inner peripheral surface of a cylindrical main body having a driving quadrangular hole formed on one end surface, and the end is formed as an open end. A drive shaft having a conical projection projecting into the hexagonal pyramid recess is fitted, and several inclined grooves into which a roller pin is fitted around the conical projection are recessed, and a plurality of circumferential grooves are pressed by the roller pin. The disc springs are stacked and housed,
A torque adapter having a receiving body attached to the open end for receiving the movement of the disc spring.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an adapter according to the present invention will be described in detail with reference to the drawings.

Reference numeral 1 denotes a cylindrical main body having a driving square hole 2 formed at one end and an inner peripheral surface 1a opened at the other end.
A hexagonal pyramid concave portion 3 and a cylindrical portion 4 are formed adjacent thereto. The screw 6 is cut at the open end. 7 is a hexagonal pyramid recess 3
Shows a drive shaft in which a rectangular projection 8 protrudes at one end and a conical column 9 is provided on the opposite side. As shown in FIG. 1, the conical column portion 9 has three inclined grooves 10 recessed at equal intervals. Reference numeral 11 denotes a roller pin incorporated in the angularly inclined groove 10 of the drive shaft 7.
Several disc springs 12 abutting on the roller pins 11 are accommodated in the space between the inner peripheral surface 1a of the main body 1 and the drive shaft 7, and the cover 14 having the screws 13 screwed into the screws 6 of the main body 1 is applied and stopped. Thus, the square projection 8 protrudes from the main body 1.

[0007]

According to the present invention, when the drive shaft 7 is rotated and the cover 11 is tightened by the roller 11 via the disc spring 12 and torque is applied to the drive square hole 2 of the main body by a wrench. As shown in FIGS. 11 (a), 11 (b) and 11 (c), one of the roller pins 11 at the diagonal position moves to the opposite surface of the hexagonal pyramid recess 3 at the lower part of the main body against the force of the disc spring 13 and is set. The torque value becomes maximum. When a torque force larger than that is applied, the roller pin 11 returns while rotating rapidly to the diagonal position. Therefore, it can be tightened with a constant torque. That is, it is possible to provide an adapter that can withstand high torque.

[Brief description of the drawings]

FIG. 1 is a vertical side view.

FIG. 2 is a sectional view taken along line AA ′ of FIG. 1;

FIG. 3 is a vertical sectional side view showing a state where a disc spring is pressed.

FIG. 4 is a sectional view taken along line BB ′ of FIG. 3;

FIG. 5 is a vertical side view of the main body.

FIG. 6 is a bottom view of the main body.

FIG. 7 is a front view of a drive shaft.

FIG. 8 is a side view of the drive shaft.

FIG. 9 is a plan view of a drive shaft.

FIG. 10 is a sectional view taken along the line CC ′ of FIG. 7;

11 (a), (b) and (c) are cross-sectional views showing the turning state of the hexagonal pyramid concave portion accompanying the turning of the handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical main body 1a Inner peripheral surface 2 Square hole for driving 3 Hexagonal pyramid concave part 4 Circular part 5 Hexagonal pyramid entrance 6 Screw 7 Drive shaft 8 Quadrangular protrusion 9 Conical column part 10 Inclined groove 11 Roller pin 12 Disc spring 13 screw 14 cover (receiving body)

Claims (1)

[Claims] 1. A cylindrical body having a driving quadrangular hole formed on one end surface, a hexagonal pyramid concave portion formed on an inner peripheral surface, and a circular shaped portion formed at the next position.
The end is an open end, a drive shaft having a conical projection projecting into the hexagonal pyramid recess is fitted into the main body, and several inclined grooves in which roller pins fit around the conical projection are recessed. A torque adapter, wherein a plurality of disc springs pressed by roller pins are superposed and housed on the circumferential portion, and a receiving body for receiving the movement of the disc spring is attached to the open end.