JPH0586474U - Adjustment device for screwing depth of screw tightener - Google Patents

Abstract

(57) [Summary] (Correction) [Structure] A screw rod 6 is rotatably provided on a main body case 4 accommodating a nose member 3, and a part of the outer periphery of an operation dial 7 of the screw rod 6 is attached to the main body case 4. The stopper piece 8 which is arranged so as to face the outside and is capable of contacting a part of the nose member 3 is arranged so as to be movable in the axial direction with respect to the screw rod 6 and impossible in the rotational direction. Window 1 visible from outside the case 4
2 is formed on the body case 4. [Effect] Turn the operation dial 7 to turn the window 12 of the main body case 4.
The exact screw-in depth can be visually confirmed simply by deciding the position of the stopper piece 8 from the above, and the operation dial 7 does not have to be projected to the outside of the screw tightening machine body 1, so that the screw tightening to the corner is also good. Can be done

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an adjusting device that adjusts a screwing depth when a screw is screwed into a workpiece by a screw tightener.

[0002]

[Prior art]

 For screwdrivers equipped with a nose member that is slidable in the axial direction with respect to the driver bit provided on the body of the screwdriver, the tip of the driver bit should be properly screwed depending on the screw type and the size of the screw. Since the dimensions of the workpiece and the surface of the workpiece are different, the end position of the sliding stroke of the nose member, which is provided so as to be slidable in the axial direction of the driver bit with respect to the screw tightener body, can be variably adjusted to adjust the screw The screwing depth is adjusted.

As such a screwing depth adjusting mechanism, a rod that abuts on the nose member as the nose member slides and projects toward the back side of the screw tightener main body is provided, and the base of the screw tightener main body is provided. There is one in which the end of the rod is brought into contact with an adjust nut arranged so as to be adjustable so as to stop the movement of the noise (see Japanese Patent Application No. 3-68745).

In this mechanism, the adjust nut has a large diameter because it is screwed and arranged at the base of the screw tightener main body, and when the screw is tightened to a corner, the adjust nut hits a wall etc. In some cases, the main body becomes tilted and the screw cannot be driven perpendicularly to the threaded surface. Also, when adjusting the screw-in depth, the position of the adjust nut cannot be accurately grasped, so the nose can be moved and operated while rotating the adjust nut while checking the relative positional relationship between the bit tip and the nose tip. I had to make adjustments by doing so, and the adjustment work was troublesome.

[0005]

[Object of the Invention] The present invention solves the above-mentioned drawbacks, and there is nothing exposed to the outside of the screw tightening machine main body, and it is possible to easily adjust the screwing depth corresponding to a predetermined screw without actually operating the nose. It is an object of the present invention to provide a screwing depth adjusting device that can be used.

[0006]

[Means for achieving the purpose]

 In order to achieve the above object, a screw tightening adjusting device for a screw tightening machine according to the present invention comprises a screw tightening machine main body equipped with a driver bit and a driving mechanism thereof, and an axial direction of a driver bit with respect to the screw tightening machine main body. And a nose member slidably supported on the screw tightener, wherein the nose member is housed in a main body case provided in the screw tightener main body, and a sliding direction of the nose member is provided. A screw rod is rotatably provided along with, and a part of the outer periphery of the operation dial formed on a part of the screw rod is arranged so as to face the outside of the main body case, and it can abut on a part of the nose member. The stopper piece is arranged so as to be movable in the axial direction but not in the rotation direction with respect to the rod, and the window is formed in the body case so that the stopper piece can be seen from the outside of the body case. And

[0007]

[Function and effect of the device]

 According to the above configuration, when adjusting the screw-in depth according to the type and size of the screw, the stopper piece that comes into contact with the nose part by rotating the operating dial to rotate the screw rod is used. Can be adjusted by moving in the sliding direction of the nose member. At that time, an accurate screw-in depth can be obtained by looking through the stopper piece from the window of the main body case and confirming its position.

Therefore, according to the present invention, it is only necessary to turn the operation dial to determine the position of the stopper piece from the window of the body case without performing the relative movement operation of the nose member with respect to the body of the screw tightener unlike in the conventional case. Since the precise screw-in depth can be visually confirmed, the adjustment operation is very easy.

Further, since it is not necessary to project the operation dial to the outside of the screw tightening machine main body, it is possible to satisfactorily tighten the screws to the corners.

[0010]

【Example】

 FIG. 1 shows a screw tightening machine. The screw tightening machine includes a screwdriver main body 1 provided with a driver bit 2 and a driving mechanism (not shown), and a driver bit 2 for the screw clamper main body 1. And a nose member 3 slidably supported in the axial direction.

A case 4 is provided at the front of the screw tightener main body 1, the nose member 3 is housed in the main body case 4, and the compression spring 5 constantly keeps the screw tightener main body 1 against the screw tightener main body 1. It is biased forward.

Next, a screw rod 6 is arranged at the rear end of the body case 4 along the sliding direction of the nose member 3 (front and rearward). A rotary operation dial 7 is integrally formed with a part of the screw rod 6 by a pin 6a (see FIG. 2), and a part of the outer periphery of the operation dial 7 faces the outside of the body case 4. A stopper piece 8 is screwed onto the screw rod 6. The stopper piece 8 is arranged so as to abut on an abutting portion 9 formed on the rear end surface of the nose member 3, and a notch groove 10 is formed at the edge portion as shown in FIG. ing. The notch groove 10 is engaged with a ridge 11 formed on the inner wall of the main body case 4 in the vicinity of the screw rod 6 so as to extend in the front-rear direction. Since the stopper piece 8 cannot rotate due to the engagement of the notch groove 10 and the protrusion 11, the stopper piece 8 is moved in the axial direction by rotating the screw rod 6 to adjust its position. be able to.

A window 12 through which the stopper piece 8 is visible from the outside of the main body case 4 is formed in the main body case 4 (see FIG. 4). Preferably, the window 12 is provided with a scale 15 indicating the amount of screwing, while the stopper piece 8 is provided with a mark line 13.

Next, the operation mode of the screw-in depth adjusting mechanism having the above-described structure will be described. When the screwing operation is performed, the front end of the nose member 3 is pressed against the workpiece to move the nose member 3 to the screw tightener main body 1. When relatively moved, the tip of the driver bit 2 projects forward with respect to the nose member 3, so that the screw 14 held at the tip can be screwed into the workpiece. When the screw 14 is screwed in in this state, the contact portion 9 at the rear end of the nose member 3 contacts the stopper piece 8 of the body case 4 (see the dotted line in FIG. 1), and the nose member 3 is screwed further. It cannot be moved relative to the fastener body 1. Since the driver bit 2 cannot be moved with respect to the nose member 3, the screwing depth is also limited to this.

When adjusting the screw-in depth in accordance with the type and size of the screw, the operation dial 7 is turned to rotate the screw rod 6 to rotate the stopper piece 8 as shown in FIG. It may be performed by moving and adjusting the. At this time, an accurate screw-in depth can be obtained by looking through the stopper piece 8 from the window 12 of the main body case 4 and aligning the mark line 13 with an appropriate scale 15.

As described above, according to the screwing depth adjusting device, the operation dial 7 can be rotated without performing the relative movement operation of the nose member 3 with respect to the screw tightener body 1 as in the conventional case. Since the exact screw-in depth can be visually recognized only by determining the position of the stopper piece 8 from the window 12 of the main body case 4, the adjusting operation is very simple.

Further, since it is not necessary to project the operation dial 7 to the outside of the screw tightener main body 1, it is possible to satisfactorily tighten the screw at the corner.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of a screwing depth adjusting device of a screw tightening machine according to the present invention.

FIG. 2 is an enlarged cross-sectional view taken along line XX of FIG.

FIG. 3 is an enlarged sectional view taken along line YY of FIG.

FIG. 4 is a perspective view of a main part of the screwing depth adjusting device.

FIG. 5 is an explanatory view of an adjustment mode of the screwing depth adjusting device.

[Explanation of symbols]

 1 screw tightener main body 2 driver bit 3 nose member 4 main body case 6 screw rod 7 operation dial 8 stopper piece 9 abutting portion 12 window

Claims (1)

[Scope of utility model registration request] 1. A screw tightener having a screwdriver main body provided with a driver bit and a drive mechanism thereof, and a nose member slidably supported in the driver screw axial direction of the screwdriver main body. Then, while accommodating the nose member inside the main body case provided in the screw tightener main body, a screw rod is rotatably provided along the sliding direction of the nose member, and a part of the screw rod is provided. A part of the outer periphery of the formed operation dial is arranged so as to face the outside of the main body case, and a stopper piece that can come into contact with a part of the nose member is movable in the axial direction with respect to the screw rod and in the rotational direction. A screwing depth adjusting device for a screw tightening machine, characterized in that a window is formed in the main body case so that the stopper piece can be seen from outside the main body case.