JPS6212493Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a drilling device used for the assembly and repair of particularly large machines such as automobiles.

Tools that are used inside equipment such as large machines are generally desired to be smaller and lighter because they require less unnecessary space inside.

However, since power tools have a power section, they are not easy to handle, despite the need to reduce their size and weight.

Furthermore, when working inside the equipment, the user is often unable to apply much force due to limited posture, and often has to rely on the power of tools.

In view of these circumstances, the object of the present invention is to provide a drilling device that can be easily handled without any trouble during assembly or repair by entering the inside of a device such as a machine.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings. The figure is a side view of a main part notch showing an embodiment of a punching device according to the present invention.

In the drawing, the drilling device has a clamp 3 configured so that a handle 1 and a gripping portion 2 grip a workpiece (not shown), and a drill 4 is provided to punch a hole in the gripped workpiece.

The drill 4 is connected to the gear 5 provided inside.
gear 5 is connected to other gears 6,
Together with 7 and 8, it constitutes a speed reducer 9.

Furthermore, by pushing the lever 11 in the direction of the drill 4, the shaft 10 of the gear 5 moves the drill 4 into the grip portion 2.
It is configured to protrude to.

The gear 5 of the shaft 10 is configured to be able to slide in the axial direction between it and the gear 6 that constitutes the reduction gear 9, and only the shaft 10 is configured to be able to move in the axial direction. Therefore, by operating the lever 11, the drill 4 can be easily moved forward and backward.

Further, a motor 13 is connected to the gear 18 at the front stage of the reducer 9 via a flexible shaft 12, and the drill 4 is rotated by the motor 13 via the reducer 9.

In such a configuration, in the drilling device, when the motor 13 rotates, the rotation is transmitted to the reduction gear 9 via the flexible shaft 12, and the reduction gear 9 rotates the drill 4 with high torque.

Then, a workpiece such as a steel plate is gripped by the gripping part 2 using the clamp 3, and the lever 11 is pushed to drill a hole in the workpiece with the drill 4.

At this time, if a scale is formed to indicate the position of the lever 11, the amount of protrusion of the drill bit 4 can be measured, and a hole of any depth can be drilled.If the hole is made deeper, a through hole can also be drilled. It's easy.

In such work, since the clamp 3 grips the workpiece, there is no risk of the drilling device slipping from the workpiece even when working in a narrow space inside the device, and drilling can be done by pressing the lever 11, making it safe and Can be reliably drilled.

In addition, since the motor 13 is separately provided via the flexible shaft 12, the drilling device does not allow the drilling 4
The part equipped with this is small and lightweight, making it extremely convenient for working in narrow equipment.

The rotation of the motor 13 is transmitted to the reducer 9 via the flexible shaft 12, and since the reducer 9 is interposed, the high torque required for the drill 4 can be obtained, and the flexible shaft 1
The output of the motor 13 is transmitted through high-speed rotation without applying high torque to the motor 2.

Generally, the allowable rotation speed of the flexible shaft 12 is about 10,000 rpm, so it is also possible to use a commutator motor.

Therefore, the motor 13 with a considerably large output can be used, and the reduction gear 9 can convert the torque into high torque to rotate the drill 4.

For example, when removing two spot-welded steel plates using such a drilling device, the spot-welded portion is grasped by the gripping part 2 of the clamp 3, and the motor 13
Rotate and press lever 11.

If a hole is made in only one of the two steel plates with the awl 4, the welded portion will be scraped off, resulting in the two steel plates coming off.

In this case, the diameter of the drill bit 4 must be larger than the welded part, and it is convenient if the drill bit 4 is constructed so that it can be easily replaced.

Furthermore, even when the working posture does not allow much force to be applied, if the hole to be drilled is held by the grip part 2 of the clamp 3, the hole can be easily drilled by pressing the lever 11, and the hole can be drilled safely and reliably.

As explained above, according to the present invention, the rotation of the motor is transmitted through a flexible shaft, and the reduction gear converts it to high torque to rotate the aperture, thereby making it possible to separate the motor, which is a heavy power unit, into narrow areas. Its practical value is extremely great because it can be used effectively for work.

[Brief explanation of the drawing]

The figure is a partially cutaway side view of a punching device according to an embodiment of the present invention. 3... Clamp, 4... Drill, 9... Reducer,
12...Flexible shaft, 13...Motor.

Claims (1)

[Scope of utility model registration request] A clamp that grips the workpiece, a drill that drills the clamped workpiece, a shaft that rotates the drill and is reciprocated by a reciprocating mechanism, and this shaft is equipped with a gear so that it can reciprocate. A drilling device comprising a connected speed reducer and a motor connected to the speed reducer via a flexible shaft.