JPS5927946Y2 - manual drilling tool - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a manual drilling tool that can easily and easily drill holes in plate materials (for example, steel plates). It is as follows.

A U-shaped support arm 2 is connected to the tip of a main body handle 1.

A die support tube 3 is connected to the outer tip of the support arm 2, and a punch support tube 4 is connected to the inner tip.

A die 5 is replaceably fitted into a die support cylinder 3.

On the other hand, the punch 6 is slidably fitted into the punch support cylinder 4.

An annular groove 7 is provided at the top end of the punch 6.

A punch receiving groove 10 having an engaging pawl ≦ that engages with the annular groove 7 is provided on the inner surface of the tip of a punch gripping rod 8 whose base end is pivotally connected to the main body gripping handle 1 .

A corner of an L-type reader 13 formed at the tip of the vibrating handle 12 is pivoted between the tips of the link plates 11 and 11' on both sides of the support arm 2 by a pivot shaft 14.

The tip of this L-type reader 13 is pivotally mounted near the extreme end of the punch gripping rod 8 by a pivot 15.

A plate material 16 inserted between a punch 6 and a die 5 is provided so as to make a hole by gripping a vibrating handle 12 and a main body handle 1.

In the case of this figure, the die supporting cylinder 3 and the die 5 are screwed into each other so as to be replaceable.

The punch 6 has a stepped tip portion to accommodate a predetermined hole diameter. That is, when the hole diameter changes, only the tip portion changes from the stepped portion.

The engagement between the engagement claw 9 and the annular groove 7 is such that when the punch 6 punches the cedar material 16, the inner surface of the punch receiving groove 10 and the top end of the punch 6 come into pressure contact, and when the punch 6 is pulled, the engagement claw 9 is in an annular shape. This is so that the groove 7 is drawn.

Reference numeral 17 denotes a pivot for pivotally connecting the link plate 11.11' to the support arm 2, and 18 denotes a pivot for pivotally connecting the proximal end of the punch gripping rod 8 to the support arm 2.

Reference numeral 19 denotes a positioning plate fixed to the support arm 2 by bolts 20 so as to be movable up and down, and the scale of the positioning pin 19 is aligned with a reference line 21 attached to the support arm 2.

The edge of the plate material 16 inserted between the die 5 and the punch 6 is brought into contact with this positioning plate 19, so that the perforation position from the line of sight can be easily determined.

To explain how to replace the punch 6 and the die 5 by changing the hole diameter, the die 5 is attached to the die support cylinder 3 by screwing, so loosen this screw and replace it. When it is removed and the punch gripping rod 8 is lowered, the annular groove 7 and the punch receiving groove 10 will be separated from each other at this time, so it is sufficient to remove it in this state.

Traditionally, drilling holes in board materials was done using a drill using a tabletop drill press or a hand drill machine, which resulted in poor work efficiency.Moreover, when drilling holes in board materials, the center of the hole had to be determined by striking with a scriber punch before the holes were misaligned. As a result, work efficiency was further reduced, and there was also a risk that the plate material would be swung around due to the rotation of the drill.

In order to eliminate this drawback, the present invention has a U-shaped support arm 2 connected to the tip of the main body handle 1, and a die support cylinder 3 is attached to the outer tip of this support arm 2, and a punch is attached to the inner tip. The support tubes 4 are arranged in series, and the die 5 is fitted into the die support tube 3. On the other hand, the punch 6 is slidably fitted into the punch support tube 4, and the plate material 16 inserted between the punch 6 and the die 5 is inserted. Since the punch 6 is slid to make a hole by gripping the vibrating handle 12 and the main body handle 1, the operator vibrates the vibrating handle 12 and attaches the punch 6 to the die as shown in FIG. 5 apart, inserting the plate 16 in this state, and then gripping the vibrating handle 12 and the main handle 1 as shown in FIG. 3, the hole can be easily drilled in the plate 16. Extremely convenient.

Moreover, since the hole is drilled by shearing, unlike a drill hole, a hole with high precision can be obtained.

Furthermore, at this time, link plates 11.11' are pivotally mounted on both sides of the support arm 2, and a corner part of an L-type reader 13 formed at the tip of the vibrating handle 12 is placed between the tip parts of the link plates 11.11'. Pivot shaft 1
4, and the tip of this L-shaped reader 13 is pivoted near the tip of the punch gripping rod 8 by a pivot 15, so that the supporting arm 2, the link plate 11, 11', the vibrating handle 12, and the L-shaped Reading 1
3. Together with the punch gripping rod 8, a double lever type boosting mechanism is formed, in other words, the operator's gripping force provides enough force to punch into the plate material 16, making it easier to punch holes. It turns out.

Furthermore, the die 5 is fitted into the die support cylinder 3 in a replaceable manner, an annular groove 7 is provided at the top end of the punch 6, and this annular groove is formed on the inner surface of the tip of a punch gripping rod 8 whose base end is pivotally connected to the main body grip handle 1. Since the punch receiving groove 10 having the engaging claw 9 engaged with the groove 7 is provided,
The punch 6 and the die 5 can be replaced extremely easily, which further improves work efficiency.

As described above, according to the present invention, a manual drilling tool is provided which has excellent practical effects such as being able to easily and easily drill holes in plate materials, and the distance between the center of the punch 6 and the tip of the punch support tube 4 is shortened. Although the hole is short, it is possible to perform the drilling work by bringing the tips of the die support tube 3 and punch support tube 4 of this product close to the edge where they collide, even when drilling a hole in an angular plate.Furthermore, the drive for the punch is integrated. Because it is directly transmitted, there is no loss of force, and it has an isotropic practical effect that allows excellent drilling work.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall perspective view, and FIGS. 2 and 3 are partial sectional views showing the state of use. 1... Body grip handle, 2... Support arm, 3.
...Die support tube, 4...Punch support tube,
5...Die, 6...Punch, 7...
...Annular groove, 8...Punch gripping rod, 9...
...Engaging claw, 10...Punch receiving groove, 11.1
1'...link board, 12...vibration grip handle, 12...L type reading, 14...pivot shaft,
15... Pivot, 16... Board material.

Claims (1)

[Scope of utility model registration request] A U-shaped support arm is connected to the tip of the main handle, and a die support tube is connected to the outer tip of this support arm, and a punch support tube is attached to the inner tip, and the die support tube is used to replace the die support tube. A die is fitted freely, a punch is slidably fitted into this punch support cylinder, an annular groove is provided at the top end of this punch, and a ring groove is provided at the top end of the punch, while a tip inner surface of a punch gripping rod whose base end is pivotally connected to the main body grip handle. A punch receiving groove having an engaging pawl that engages with the annular groove is provided, the annular groove of the punch is engaged with the punch receiving groove, and one end of the link plate is pivoted on the tip side of the support arm on the punch side. The other end of this link plate and the corner of the L-shaped reading formed at the tip of the vibrating grip handle are pivotally connected by a pivot shaft, and the tip of this L-shaped reading and the tip of the punch gripping rod are connected. A manual drilling tool characterized by a pivot point and a pivot point.