JP3184200U - Center punch and its center determined parts - Google Patents

Abstract

A center determining part having a structure in which only a low-cost center determining sleeve is replaced with a center determining sleeve provided at the tip of the center punch for a center punch, and a center punch or an automatic center punch mounted with the center determining part. I will provide a.
A centering part for use in a center punch or an automatic center punch, the centering part comprising a centering sleeve exchangeable with one having a different outer diameter, and a spring mechanism. Is composed of a movable ring 2 and a stationary ring 3 and a spring 4 sandwiched between the movable ring and the stationary ring, and a centering sleeve is provided adjacent to the movable ring.
[Selection] Figure 1

Description

The present invention provides, for example, a center punch that gives a dent to a mounted object at the center of a mounting hole of a mounting object when mounting the mounting object such as a handrail of a handrail to a mounted object such as a wall with a screw or the like, and its center It is related to the determined parts.

Conventionally, as this type of center punch, as shown in Japanese Patent No. 2601400 and Japanese Utility Model Laid-Open No. 58-8580, a punch configured to be able to stamp a punch at the center of a hole by a positioning member or a guide gold is known. Yes.

Japanese Patent No. 2601400 Japanese Utility Model Publication No. 58-8580

However, when attaching the mounting object to the mounted object, if the center punch punches the center of the mounting hole such as the screw of the mounting object, or if the size or depth of the mounting hole such as the screw is different, It is necessary to replace the entire center punch in the structure of the center punch known in the past, or it is not suitable if there is no inclined surface of the countersink that constitutes one corner of the mounting hole such as the screw of the mounting object, There was a problem that the required number of expensive center punches increased.

The tool of the present invention is intended to solve such problems. For a single center punch, a removable centering sleeve is provided at the tip of the center punch, and only the inexpensive centering sleeve is replaced. It is a structure and a chair. Various centering sleeves may be prepared to fit the mounting holes of various mounting objects, and they can be easily prepared because they are inexpensive.

As described above, the tool of the present invention is provided with a detachable centering sleeve at the tip of the center punch for one center punch, and is constructed so that only an inexpensive centering sleeve can be replaced. There is also an economic effect.

In addition, if the entire center determination part can be attached to and detached from the punch or the automatic punch body, the entire center determination part can be added to the existing punch or automatic punch body by simply adding the entire center determination part. It is economical because it has a function. In that case, it is desirable to magnetize the movable ring and the fixed side ring.For example, if the movable ring and the fixed side ring are magnetized, the tip of the center punch or the automatic center punch as a whole can be pointed in any direction. However, since there is very little possibility that the entire center-determined part will fall out of the center punch or the automatic center punch body, workability is improved.

1 is an overall view of an embodiment of the present invention. It is sectional drawing of the front-end | tip part of the centering sleeve and punch tip bar of the Example shown in FIG. It is an arrow line view which follows the AA arrow line shown in FIG. It is a general view of the center punch of the Example shown in FIG. 1, or an automatic center punch. It is a general view of a center punch or an automatic center punch according to another embodiment of the present invention. FIG. 6 is an overall view of a set of centering parts of the center punch or the automatic center punch shown in FIGS. 4 and 5.

In the present invention, when a screw or the like is accurately screwed into the mounting hole of the mounting object, or when drilling with a drill blade, the tip of the mounting hole is set so that the screw or the tip of the drill blade is accurately positioned at the center of the mounting hole. Although the present invention relates to a tool for accurately making a dent on a central attachment, the importance of the present invention is recognized in that the following two problems can be prevented.

The first point is that when the mounted object is an object having two surfaces of the vertical direction and the horizontal direction (for example, a portion where the wall and the ceiling intersect), the two intersecting surfaces are in close contact with each other to mount the mounting object. When the tip of the screw is screwed up and down from the center of the mounting hole to be mounted in the vertical direction, the mounting object is separated from the horizontal surface or is too close, causing a problem.

The second point is that if one mounting object is attached to the mounted object with screws, etc., and the mounting object has two or more mounting holes, the tip of the screw or the like must be applied to the center of each mounting hole and screwed in. Even if the screw or the like is sufficiently tightened, the head of the screw or the like jumps out of the mounting hole and looks very bad, and sometimes the attachment cannot be firmly attached.

In order to avoid the above-described problems, the present invention can be carried out easily and economically at low cost.

1 to 4 show one embodiment of the present invention. One of the present inventions is a punch constructed by fixing a punch tip bar 5 to a punch body 6 or a punch tip bar 5 to a punch body 6. Is a center punch or an automatic center punch in which a centering sleeve 1 and a spring mechanism 12 are attached to the tip of an automatic punch that is movable on the axial center line of the punch body 6.

The spring mechanism 12 includes a movable ring 2 and a stationary ring 3 and a spring 4 sandwiched between them. The centering sleeve 1, the movable ring 2, and the stationary ring 3 have a circular hole with an inner diameter that can be inserted into the punch tip bar 5, and the diameter is slightly larger than the outer diameter of the punch tip bar 5. Therefore, the punch tip bar 5 can be moved through the hole.

Since the centering sleeve 1, the spring 4 and the punch body 6 are magnetic bodies, and the movable ring 2 and the fixed side ring 3 are magnetized, the centering sleeve 1, the spring mechanism 12 and the punch body 6 are in close contact with each other. It is hard to leave.

When the attachment object 7 is attached to the attachment object 8 with the center punch or the automatic center punch, the centering sleeve 1 is inserted into the attachment hole 9 of the attachment object 7 and the punch body 6 is driven (or pushed) in the distal direction. The force is transmitted to the tip end portion 5A of the punch tip bar, and a dent is made on the mounted object 8.

At that time, if a centering sleeve 1 having an outer diameter that is only slightly smaller than the inner diameter of the mounting hole 9 is selected and used, a dent can be made at the place of the mounted object 8 corresponding to the mounting hole center 10.

FIG. 5 shows another embodiment. If the cover 11 is attached, it will be a good-looking tool.

FIG. 6 shows a centering component in which the centering sleeve 1 and the spring mechanism 12 are combined. Since this part can be used by attaching it to an existing punch or an automatic punch, it can be used more economically.

Since the present invention relates to a tool having a function of easily attaching various attachment objects to the object to be attached regardless of the shape of the attachment hole of the attachment object, it can be used in all industries, and it can be used for hobby and disaster prevention such as DIY. It can also be used as a countermeasure.

5B Punch tip bar parallel part

Claims (2)

Centering parts consisting of a centering sleeve and spring mechanism that can be exchanged for ones with different outer diameters. A center punch or an automatic center punch in which the centering component of claim 1 is mounted on the tip portion.

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