JPH07205040A - Fixing method and tool for pillar body - Google Patents

Abstract

PURPOSE:To simplify processing work, to reduce processing costs and to improve workability by making it unnecessary to specially provide a restraining part for fixing a tool to the base end part of a pillar body when the pillar body is fixed to an object to be attached by a screw. CONSTITUTION:A pillar body 1 having a screw part 11 on its tip with a base end part formed cylindrical in section is screwed in and fixed to an object 3 to be attached. A receiving part 21 is provided on the tip part of a tool main body 2 and the receiving part 21 is composed of a one-way clutch having a cylindrical part 25 and a plurality of rotors 26 and each rotor 26 is housed in a holding groove 27 provided along the circumferential direction of the cylindrical part 25. When the pillar body 11 is fitted into the receiving part 21, the relative rotational movement of the cylindrical part 25 contacted with the pillar body 11 via the rotor 26 is selectively restricted by one rotational direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a columnar body fixing method and a fixing tool for fixing a columnar body having a threaded portion at its tip to an object to be mounted by screwing.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional columnar body fixing means. Columnar body 7 such as a screw shaft having a male screw portion 71 at the tip
In order to screw the screw into a female screw portion 91 provided in advance on various attachment objects 9 manually or with an electric tool 8, such as a hanging groove as shown in which the tip end of the tool 8 is engaged with the base end portion of the columnar body 7. It is necessary to provide the locking portion 72. Reference numeral 73 is a female screw portion for fixing another component to the columnar body 7 with a screw.

As another example of the engaging portion 72, the base end portion of the columnar body 7 is formed to have a rectangular cross section or the end face of the base end portion is attached to the end portion of the prism in accordance with the shape of the tool tip. A hole may be provided.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a columnar body such as a screw shaft having a screw portion at the tip and a base end portion having a circular cross section is fixed to an object to be attached by screwing. A method of fixing a columnar body and a fixing tool which eliminates the need for specially forming a locking portion such as a hanging groove for engaging the tip of a tool on the base end of the columnar body having a circular cross section Is.

According to the present invention, since it is not necessary to provide a tool engaging portion at the base end portion of the columnar body, when the number of columnar bodies to be screwed in is large, the work is simplified and the processing cost is reduced. Can be achieved.

Further, according to the present invention, when the columnar body is screwed in by hand using the fixed tool with the handle, the tool fitted in the base end of the columnar body is not released from the hand, and the handle is simply held. Since the columnar body is screwed into the object to be mounted only by reciprocatingly rotating it, there is also an advantage that workability can be improved.

[0007]

In order to achieve the above object, the method of fixing a columnar body according to the present invention has a threaded portion extending in the axial direction at the tip and a base end having a circular cross section. The receiving portion provided at the tip of the fixed tool body is detachably fitted to the base end portion of the columnar body; the receiving portion is a tubular portion and a plurality of trochanters movably mounted inside the tubular portion. A one-way clutch having: a columnar body and a receiving portion, with the threaded portion of the tip of the columnar body being pressed against an object to be mounted in a fitted state of the columnar body and the receiving portion, the receiving portion of the columnar body When rotated in the screw-in direction, the rolling movement of each trochanter in the holding groove formed inside the tubular portion is restrained by friction at one end side of each holding groove, so that the tubular portion passes through the trochanter. Selectively prevents the rotation between the column and the columnar body; Characterized by screwing the threaded portion to the attachment object.

According to a second fixing method of the present invention, a handle is provided at the base end portion with respect to the base end portion of a columnar body having a screw portion extending in the axial direction at the tip end and the base end portion having a circular cross section. The receiving portion provided at the tip of the fixed tool body having the above is detachably fitted; the receiving portion is configured by a one-way clutch having a tubular portion and a plurality of trochanters movably mounted inside the tubular portion. In the fitted state of the columnar body and the receiving portion, while holding the screw portion at the tip of the columnar body against the attachment target, hold the handle by hand and rotate the receiving portion in the screwing direction of the columnar body. At this time, the rolling movement of each trochanter in the holding groove formed inside the tubular portion is restrained by friction at one end side of each holding groove, so that the trochanter and the columnar body selectively pass through the rotator. It was made impossible to rotate, and the receiving part was rotated in the screw-back direction of the columnar body. , Kakutenko is a rolling freely in the other end of each holding groove, the cylindrical portion with respect to the columnar body becomes possible idling;
It is characterized in that the threaded portion at the tip of the columnar body is screwed onto the object to be attached by the turning operation of the receiving portion by the handle in the left and right directions.

Further, the columnar body fixing tool of the present invention has a threaded portion extending in the axial direction at the tip, and the columnar body having a base end portion having a circular cross section is screwed into a mounting object to be fixed. A fixing portion is provided at the tip of the fixed tool body so that the base end portion of the columnar body can be detachably fitted in the axial direction; the receiving portion includes a tubular portion and a tubular portion. It is composed of a one-way clutch having a plurality of trochanters movably mounted on the inside; each trochanter is inside a holding groove formed on the inside along the circumferential direction of the tubular part, with one end side shallow and the other end side deep. When the base end portion of the columnar body is fitted into the receiving portion on the tool body side, the relative rotational movement of the cylindrical portion that comes into contact with the columnar body through the trochanter with respect to the columnar body It is characterized in that it is selectively restrained by the rotation direction of the.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. 1 and 2 show a first embodiment and a second embodiment of the present invention.
Each of the examples is shown, and FIG. 3 shows a common enlarged cross-sectional view of the two examples.

In the first embodiment shown in FIGS. 1 and 3, reference numeral 1 denotes a shaft body having a threaded portion 11 extending in the axial direction at its tip and a base end formed in a circular cross section. Reference numeral 12 denotes a female thread portion for fastening another component to the base end side of the columnar body 1 with a set screw.

The threaded portion 11 of the columnar body 1 may be a male screw or a female screw. The female screw portion 12 is provided as needed.

Around the base end portion of the columnar body 1, a receiving portion 21 provided at the tip of the fixed rear portion main body 2 is detachably fitted in the axial direction A as shown by a chain line in FIG.

The receiving portion 21 is fixedly or removably attached to a rotation output shaft 22 of a driving means (not shown) such as a motor in the tool body 2.

The purpose of detachably attaching the receiving portion 21 to the rotary output shaft 22 is to replace the receiving portion 21. Reference numeral 23 is an energizing cord, and 24 is a switch button for energizing the driving means.

As shown in FIG. 3, the receiving portion 21 includes a tubular portion 25 and a plurality of rollers or balls or other rotators 26 rotatably mounted inside the tubular portion 25. It is composed of a one-way clutch having. Each of the trochanters 26 is formed inside along the circumferential direction of the tubular portion 25, and one end side (left side in FIG. 3) is shallow and the other end side (right side in FIG. 3) is deep in the holding groove 2 formed inside.
It is housed in 7.

When the base end portion of the columnar body 1 is fitted into the receiving portion 21 on the tool body 2 side, the cylindrical portion 25 that comes into contact with the columnar body 1 through the rotator 26 with respect to the columnar body 1. The relative rotational movement is selectively constrained by the difference in rotational direction.

In the fitted state of the columnar body 1 and the receiving portion 21 (cylindrical portion 25), the receiving portion 21 is pushed by hand or driving means while pressing the threaded portion 11 at the tip of the columnar body 1 against the attachment object 3. When it is rotated in the screwing direction B of FIG. 3 (the direction of arrow P in FIG. 3), the rolling of each trochanter 26 in the holding groove 27 formed in the tubular portion 25 is performed at one end side of each holding groove 27 (see FIG. It is restrained by friction at 3).

Therefore, the cylindrical portion 25 and the columnar body 1 are selectively and relatively unrotatable via the rotator 26. That is, when the tubular portion 25 is rotated in the direction of arrow P in FIG. 3, the columnar body 1 also rotates in the same direction (screw-in direction B) via the rotator 26 that is immobile due to friction. , Through its action, the threaded portion 11 at the tip of the columnar body 1
Is screwed and fixed to the corresponding screw portion 31 or the like of the attachment target 3.

The corresponding threaded portion 31 of the object 3 may be a female thread or a male thread depending on the shape of the threaded portion 11 of the columnar body. As shown in the second embodiment of FIG. 2, when the threaded portion 11 of the columnar body 1 is of a type that is sharpened and screwed in while forming the threaded hole itself, the corresponding threaded portion (31) in the attachment target 3 Of course, it need not be formed in advance.

In FIG. 3, reference numeral 28 is provided between each trochanter 26 and the stopper piece 28a as required, and each trochanter 2
A compression spring biases 6 toward one end side (left side in the figure) of the holding groove 27, and 29 is a cylindrical pressing plate having a through hole that allows a slight inward protrusion of each trochanter 26. .

In the second embodiment shown in FIGS. 2 and 3, the tool body 2 has a handle 20 at its base end, and the handle 20 is held and operated by hand. Since the second embodiment is of a manual type, no drive means is provided in the tool body 2 and a fixed connecting member 22a is provided between the tool body 2 and the receiving portion 21. However, the connecting member 22a and the tool body 2 or the receiving portion 21 can be detachably attached for the purpose of replacing the receiving portion 21.

The receiving portion 21 of the fixed tool of the second embodiment.
In the fitted state of the columnar body 1 and the threaded portion 11 of the tip of the columnar body 1 against the attachment target 3, the handle 20 is held by hand and the receiving portion 21 is held together with the main body 2 in the columnar body 1.
Of the trochanter 2 in the holding groove 27 formed in the tubular portion 25 when rotated in the screwing direction B (in the direction of arrow P in FIG. 3).
The rolling of No. 6 is restricted by friction at one end side (left side in FIG. 3) of each holding groove 27.

Therefore, the cylindrical portion 25 and the columnar body 1 are selectively and relatively unrotatable via the rotator 26.

On the other hand, when the receiving portion 21 is manually rotated by the handle 20 in the screw return direction of the columnar body 1 (the direction of arrow Q in FIG. 3), each trochanter 26 has the other holding groove 27. By displacing slightly to the end side, its rolling becomes free,
The tubular portion 25 can idle with respect to the columnar body 1.

By the reciprocating rotation operation of the receiving portion 21 in the left and right directions by the handle 20, the threaded portion 11 at the tip of the columnar body 1 is attached to the object 3 to be attached without releasing the hand from the handle 20.
It becomes possible to easily screw in and fix.

After the columnar body 1 is screwed and fixed, if the tool body 2 is pulled back in the direction opposite to the axial direction A, the receiving portion 21
In FIG. 3, unless a rotational force in the direction of arrow P in FIG. 3 is applied, the wedge action of the rotator 26 on the columnar body 1 is reduced, and the state in which the columnar body 1 is fitted is easily released.

[0028]

According to the method of fixing the columnar body and the fixing tool of the present invention described above, the columnar body having the screw portion at the tip and the base end portion having a circular cross section is mounted by screwing. When fixing to an object, it is not necessary to provide a tool locking part at the base end of the columnar body, and that part can be left in a simple shape, which simplifies work and reduces processing costs. Can be achieved.

Further, in the present invention, when the columnar body is screwed by hand using the fixing tool with the handle, the columnar body can be fixed to the object to be attached by simply reciprocating the tool while holding the handle. Therefore, the workability can be significantly improved.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a first embodiment of a method of fixing a columnar body and a tool of the present invention.

FIG. 2 is a partial vertical sectional side view showing a second embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view showing a state in which the fixing tool is fitted in the columnar body in the first and second embodiments of the present invention (common enlarged cross-sectional view taken along line III-III in FIGS. 1 and 2). ).

FIG. 4 is a partial vertical cross-sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Columnar body 11 Screw part 2 Tool body 21 Receiving part 25 Cylindrical part 26 Rotor 27 Holding groove 3 Object to be mounted

Claims (3)

[Claims] 1. A threaded portion extending in an axial direction is provided at a tip,
The receiving portion provided at the tip of the fixed tool body is detachably fitted into the proximal end of the columnar body whose proximal end portion is formed in a circular cross section; the receiving portion includes a tubular portion and a tubular portion thereof. A one-way clutch having a plurality of trochanters movably mounted on the inner side; in a fitted state of the columnar body and the receiving portion, while pressing the threaded portion of the tip of the columnar body against the attachment target, When the receiving part is rotated in the screwing direction of the columnar body by hand or by driving means, the rolling of each trochanter in the holding groove formed inside the tubular part is restricted by friction at one end side of each holding groove. Therefore, the cylindrical portion and the columnar body are selectively made non-rotatable via the trochanter; the threaded portion of the tip end of the columnar body is screwed to the attachment object through its action. Fixing method. 2. A threaded portion extending in the axial direction is provided at the tip,
A receiving portion provided at the tip of a fixed tool body having a handle at the base end is detachably fitted to the base end of a columnar body having a base end portion having a circular cross section; A one-way clutch having a shaft portion and a plurality of trochanters movably mounted inside the tubular portion; a threaded portion at the tip of the rod body is attached in a fitted state of the rod body and the receiving portion. When pressing the handle against the object and rotating the receiving part by hand in the screwing direction of the columnar body, the rolling motion of each trochanter in the holding groove formed inside the tubular part is retained. It is restrained by friction at one end of the groove so that it cannot selectively rotate between the pillar and the columnar body through the trochanter, and when the receiving part is rotated in the screw return direction of the columnar body, The child is free to roll on the other end side of each holding groove, and the cylindrical part can idle with respect to the columnar body. It becomes; fixing method of the columnar body, characterized in that screwed to the object attaching the threaded portion of the columnar body tip left and right direction of the rotation operation of the receiving part by the handle. 3. A threaded portion extending in the axial direction at the tip,
A fixing tool for screwing and fixing a columnar body having a base end portion having a circular cross section into an object to be mounted; a base end portion of the columnar body can be detachably fitted in an axial direction, The fixed tool main body is provided with a receiving portion at the tip thereof; the receiving portion is composed of a one-way clutch having a tubular portion and a plurality of trochanters movably mounted inside the tubular portion; It is housed in a holding groove formed on the inner side along the circumferential direction of the part, the one end side being shallow and the other end side being deep; when the base end of the columnar body is fitted into the receiving part on the tool body side, the columnar body On the other hand, the tool for fixing a columnar body is characterized in that the relative rotational movement of the cylindrical portion that comes into contact with the columnar body through the trochanter is selectively restrained in one rotation direction.