JPH0586471U - screwdriver - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the space required in the screw axial direction during screw tightening work. [Structure] The screwdriver shaft is divided into a screw tightening shaft 2 and a grip portion shaft 5, and the rotation of the grip portion shaft 5 is transmitted to the screw tightening shaft 2 at a right angle by bevel gears 4a and 4b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a screwdriver.

[0002]

[Prior Art]

 As shown in FIG. 2, the conventional screwdriver is formed by fixing the screw tightening shaft 2 to the grip portion 3, and inserting the tip of the screw tightening shaft 2 into the head driver groove (not shown) of the screw 1. The screw 1 is screwed in by fitting the rotary shaft and the screw tightening shaft 2 so that the rotary shafts are aligned with each other, and rotating the grip portion 3 by hand.

[0003]

[Problems to be solved by the device]

However, when the screw tightening work is performed by the screwdriver shown in FIG. 2, the screw tightening cannot be performed unless there is a space of the screwdriver length L ₂ or more in the rotation axis direction of the screw. The present invention seeks to provide a screwdriver that can be easily tightened in a narrow space.

[0004]

[Means for Solving the Problems]

 The grip portion shaft and the screw tightening shaft are divided and arranged at a right angle, and the both shafts are connected via a bevel gear.

[0005]

[Action]

 With the above structure, the direction of the grip shaft is at right angles to the screw rotation axis, and the grip of the screwdriver is rotated by hand from the direction perpendicular to the screw rotation shaft. The rotation of the part shaft is transmitted to the screw tightening shaft so that the screw can be tightened.

[0006]

【Example】

 An embodiment of the present invention is shown in FIG. In FIG. 1, the main components are a screw fastening shaft 2 to which a bevel gear 4a is attached, a grip portion 3 and a bevel gear 4b and a grip portion shaft 5 to which a shaft slip-off prevention plate 6 is attached, and a bearing portion 9 and a grip pipe 7 are integrated. It is made up of a cover 8 that has been transformed into a cover. The screw tightening shaft 2 prevents a shaft shake and a shaft drop by a shaft receiving hole 9 formed in the bearing 9 and the cover 8. The grip portion shaft 5 prevents the shaft slippage and the shaft slippage by the shaft slipout prevention plate 6, the shaft slipout prevention portion 12 of the grip tube 7, and the shaft shake prevention hole 11 opened in the cover 8.

The bevel gear 4a and the bevel gear 4b are fitted to each other, and the screw tightening shaft 2 and the grip portion shaft 5 are perpendicular to each other. When the grip portion 3 is rotated by hand, the rotational force is transmitted through the grip portion shaft 5 and is transmitted at a right angle to the screw tightening shaft 2 by the bevel gears 4a and 4b. If the combined dimension L _{1 of the} screw tightening shaft 2 and the cover 8 is secured in the upper part of the screw 1, the screw tightening shaft 2 is screwed into the driver groove (not shown) from any direction perpendicular to the shaft of the screw 1. It is possible to perform the screw tightening work by fitting it in (1) and rotating the grip portion 3 by hand.

[0008]

[Effect of the device]

 The following effects can be acquired by setting it as such a structure. (1) Since the grip size is not required in the axial direction of the screw, the space above the screw can be reduced and the device can be made compact. (2) Since the direction of the grip portion axis is perpendicular to the screw axis, the screw tightening work can be performed in any direction as long as it is perpendicular to the screw axis, and the screw tightening work becomes easy.

[Brief description of drawings]

FIG. 1 is a view showing a screwdriver according to the present invention.

FIG. 2 is a view showing a conventional screwdriver.

[Explanation of symbols]

 1 Screw 2 Screw Tightening Shaft 3 Grips 4a, 4b Bevel Gear 5 Grip Shaft 6 Shaft Removal Prevention Plate 7 Grip Tube 8 Cover 9 Bearing Bearing 10 Shaft Through Hole 11 Shaft Shake Prevention Hole 12 Shaft Prevention Prevention

Claims (1)

[Scope of utility model registration request] 1. A screw tightening shaft and a grip part shaft are arranged at a right angle,
A screwdriver in which the screw tightening shaft and the grip portion shaft are connected by a bevel gear.