JPH0533286Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a vibrating doweling machine for driving dowels for shelf support into holes formed in the vertical inner wall surface of a bookshelf or the like.

[Prior art and its problems]

In conventional vibratory doweling machines, dowels are loaded into loading holes in the end face of a head attached to a drive rod. At this time, the outer end surface of the dowel attached to the head, that is, the end surface located at the bottom of the shelf hole when driving is completed, is flush with the outer end surface of the head. With this configuration, the dowel is not visible because it is blocked by the head, so aligning the dowel with the shelf hole is very difficult and requires skill. Furthermore, the means for attaching the head to the drive rod is complicated, making it troublesome to replace the head. Furthermore, if the head comes into direct contact with the surface of the bookshelf wall, there is a possibility of damaging it.

[Purpose of invention]

The object of the present invention is to provide a vibratory doweling machine that solves all of the above problems.

[Structure of the idea]

To achieve this object, the present invention provides a vibratory doweling machine that includes a drive rod driven by a vibration source and a head that is attached to the tip of the rod. The drive rod has a closed cylindrical inner diameter hole, a circumferentially extending groove is formed on the circumferential surface of the inner diameter hole, and the drive rod has a cylindrical outer circumferential surface, and a circumferential groove is formed on the outer circumferential surface of the drive rod. A ring made of an elastic material is installed in this groove, and when the head is fitted to the rod, the groove of the head is aligned with the groove of the rod. The head can be supported on the rod by engaging with the resilient outer circumferential surface of a ring mounted therein, and a dowel attachment projection projects axially outward from the closed end of the head. , the protrusion is surrounded by a protective pad made of a cushioning material around the closed end of the head and attached to the head;
The protective pad has an engaging surface that extends in a direction perpendicular to the axis of the protrusion, and further has an outer surface that allows the portion of the protrusion protruding from the protective pad to fit into the inner threaded hole of the dowel to be driven. To provide a vibrating doweling machine characterized by including an end and a means for temporarily fixing a dowel at the outer end.

According to a preferred embodiment of the invention, the outer end of the projection includes an axially extending inner diameter hole and a lateral slot formed in the side wall of the projection so as to communicate with the inner diameter hole, and the temporary fixing means is approximately It is a U-shaped elastic wire, and has a curved engagement part bent so that one leg of the U shape protrudes outward, and the wire is closed into the inner diameter hole at the outer end of the protrusion, with the end leading up. When the dowel is inserted, the curved engaging portion protrudes from the slot and engages with the inner surface of the dowel attached to the protrusion to temporarily fix it onto the protrusion.

According to a preferred embodiment of the present invention, the dowel may be temporarily attached to the outer end of the protrusion using negative pressure.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to FIG. 1, there is shown a vibratory doweling machine, generally designated by the reference numeral 10, having a drive rod 14 attached to the body 12 of the doweling machine 10 in a known manner. . The structure and operation of the doweling machine 10 may be of a well-known type and will be apparent to those skilled in the art and will not be further described here. Note, however, that the drive rod 14 reciprocates along its axis.

The drive rod 14 has at least a front end 16
has a cylindrical shape, and a circumferential groove 18 is formed on the outer circumferential surface near the front part, and a mounting ring 20 made of an elastic material, for example, rubber is installed in this groove 18. There is. The attachment ring 20 connects the front end 16 of the drive rod 14 and the head 22 without any play or clearance, so that the two members will not easily separate from each other.

Attached to the front end 16 of the drive rod 14 is a head 22, which has a cylindrical inner diameter hole 24 closed at one end, with a circumferential comparison A shallow groove 26 is formed. When the inner diameter hole 24 of the head 22 is fitted into the front end 16 of the drive rod 14,
The outer periphery of the ring 20 in the rod groove 18 is the head 2.
The head 2 is engaged with the groove 26 in the inner diameter hole 24 of the head 2.
2 can be fixed on the drive rod 14. At this time, the outer end of the drive rod 14 engages the inner surface of the closed end of the head bore 24. When you want to replace the head for some reason, such as when you want to use a different head, use head 2.
The head 22 can be easily removed from the drive rod 16 by pulling the head 22 axially away from the drive rod 16.

Projecting axially outwardly from the outer surface 28 of the closed end of the head 22 is a projection 30 that includes a root portion 32 and a loading end portion 34 extending from the root portion 32 and having a reduced diameter. Consisting of
The root portion 32 is surrounded by a protective pad 36 made of any suitable cushioning material, such as urethane, and in the illustrated embodiment includes a hook portion on a circumferential ridge 38 formed in the head 22. 40 is engaged with the head 22.
The front side of the protective pad 36, that is, the surface 36A that engages with a surface such as a bookshelf wall, is connected to the base portion 32 and the loading end portion 3.
4 in the vicinity of the boundary of the protrusion 30 in a direction perpendicular to the axis of the protrusion 30, so that when the dowel is driven in, it will not engage with the surface of the bookshelf wall and cause damage thereto.

The projection 30 has an axially extending bore 42 which terminates just before the head 22 is closed. A slot 44 is formed in the side wall of the projection 30 and communicates with the bore 42.

A generally U-shaped wire 46 is inserted into the bore 42 with its closed end first, and the wire 46 has an engaging portion 48 formed by curved one leg of the U-shape. This engaging portion 48 is connected to the slot 4.
A dowel 50 projects outwardly from 4 and is shown in the figure.
When the dowel 50 is fitted onto the loading end 34 of the protrusion 30 and set, it engages with the inner threaded surface 52 of the dowel 50 to temporarily fix the dowel 50 onto the protrusion 30. wire 4
6 can be elastically deformed, the engaging portion 48 can be easily retracted into the slot 44, and the dowel 50
is easy to load.

According to such a configuration, the dowel 50 is connected to the head 2.
Since the dowel 50 is attached to the tip of the protrusion 30 protruding from the dowel 50, as shown in FIG. can.

Further, when the dowel 50 is attached to the protrusion 30 of the head 22, the inner end of the dowel (which becomes the outer end when driven into the dowel hole 50A) is on the same plane as the engagement surface 36A of the protective pad 36. Then,
When the dowel 50 is driven into the dowel hole 50A as shown in FIG. 3, its outer end surface coincides with the wall surface of the bookshelf, which is preferable because the planar accuracy is improved.

In the illustrated embodiment, the U-shaped wire 46 is used to temporarily fasten the dowel 50, but negative pressure is supplied to the protrusion 30 of the head 22, and this negative pressure is used to make the dowel protrude. It may be temporarily fixed on top.

[Effect of idea]

According to the above configuration, since the dowel to be driven is attached to the tip of the protrusion protruding from the head, the dowel can be easily engaged with the entrance of the shelf hole while visually seeing it, Since the head is supported on the drive rod by only elastic links, its replacement is easy. Furthermore, a protective pad is installed on the front of the head and around the base of the protrusion, so there will be no damage to the surface of the bookshelf wall.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional fragmentary view showing a doweling machine according to the present invention. FIG. 2 is a sectional view showing a state in which a dowel is being driven by the dowel driving machine of FIG. 1. FIG. 3 is a diagram showing the completed state of doweling by the doweling machine according to the present invention. In the drawing, 10... doweling machine, 12...
Main body, 14...Drive rod, 16...Front end, 18...Groove, 20...Ring, 22...Head, 24...Inner diameter hole, 26...Groove, 30...Protrusion, 36...Protection Pad, 42...Inner diameter hole, 44
...Slot, 46...Wire, 48...Engaging portion, 50...Dowel, 50A...Dowel hole.

Claims (1)

[Claims for Utility Model Registration] (1) A vibratory doweling machine including a drive rod driven by a vibration source and a head attached to the tip of the rod, wherein the head is The drive rod has a cylindrical inner diameter hole with one end closed, a groove extending in the circumferential direction is formed on the circumferential surface of the inner diameter hole, and the drive rod has a cylindrical outer circumferential surface. A circumferential groove is formed, and a ring made of an elastic material is mounted in this groove, so that when the head is fitted onto the rod, the groove of the head is inserted into the rod. The head can be supported on the rod by engaging the resilient outer circumferential surface of a ring mounted in the groove, and a dowel attachment projection projects axially outwardly from the closed end of the head. and the protrusion is surrounded by a protective pad made of cushioning material around the closed end of the head and attached to the head, the protective pad extending in a direction perpendicular to the axis of the protrusion. The projection has an engaging surface, and further includes an outer end where the portion of the protrusion protruding from the protective pad fits into the inner screw hole of the dowel to be driven, and temporary fixing means for temporarily fixing the dowel to this outer end. A vibrating doweling machine comprising: (2) The outer end of the protrusion includes an inner diameter hole extending in the axial direction and a side slot formed in the side wall of the protrusion so as to communicate with the inner diameter hole, and the temporary fixing means has a substantially U-shaped elastic shape. It is a wire with a curved engagement part bent so that one leg of the U-shape protrudes outward, and when this wire is inserted into the inner diameter hole outside the protrusion with the closed end first 2. The vibrating dowel hammer according to claim 1, wherein the curved engaging portion protrudes from the slot and engages with the inner surface of the dowel mounted on the protrusion to temporarily fix the dowel onto the protrusion. (3) Claim 1 characterized in that the end of the protrusion engages with the dowel and temporarily fastens the dowel using negative pressure.
The vibratory doweling machine described.