JPS59226706A - Device for mounting or demounting and fixing cylindrical body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rod-shaped body attaching/detaching device for removably fixing a rod-shaped body to a hole drilled at a desired location in, for example, furniture, a product display stand, or the like.

As is known (particularly in furniture such as cavities, there are furniture in which a large number of holes for attaching parts are pre-drilled on the required board surface in order to attach shelf boards, slide rails, hinges, stays, etc.).

As shown in Figures 1 to 3, this hole a is a straight hole simply drilled in a fixing plate such as a cap screw, so when installing shelf board C using this hole. If the shelf plate bearing shaft d is simply inserted into the hole a as shown in FIG. 1, it may fall off due to vibration or the like.

In order to prevent this falling off, conventionally, as shown in Fig. 2, a cylinder e with a cut e' at the tip is inserted into the hole a, and then a shelf plate bearing shaft d is inserted into the cylinder e. It is known that the tip of the cylindrical body e is enlarged in diameter to make it difficult to pull out from the hole a.

However, even if the diameter of the tip of the cylinder e is expanded, there is a tapered part e'' in front of it, so if you pull it out with a little strong force, the cylinder e will also come out. body e
Since it was made of synthetic resin, it was also weak in strength.

Further, since the cylinder e needs to be long and have a large diameter to some extent, it has disadvantages in size, bending strength, reduced operability due to separation of parts, fixing strength, etc.

Furthermore, when a slide rail, a hinge, etc. is fixed using the above-mentioned hole a, conventionally, it is common to use a wood screw-like rod-shaped shaft d' as shown in Fig. 3. However, according to this method, in order to change the fixing position, the rod-shaped body d' is transferred to another hole, and the hole from which the rod-shaped body d' is extracted leaves a scratch on its inner circumferential surface, and this is exposed. It had the disadvantage of being unsightly.

In addition to this, there are other methods such as carving a screw thread along the entire length of the hole or inserting another member, but these methods are expensive and
It has drawbacks such as the time it takes to fix it, so it is not satisfactory.

Therefore, the present invention has been made based on a series of studies in view of the conventional circumstances.
A new device for attaching and detaching a rod-shaped body is obtained, and its purpose is to make it possible to fix it easily and easily with great strength by using a straight hole that has just been drilled in a hole, etc. , even when changing the fixed position,
It is an object of the present invention to provide a device that can be easily removed with an extremely simple operation, and that can be constructed as a single item without leaving any scratches on the surface area around the hole.

The present invention will be described in detail below based on the illustrated embodiments. As shown in FIGS. 4 to 12, the rod-shaped body 1 for holding shelf boards and fixing slide rails, etc. is used for cabinets, etc. A straight mounting hole 3 drilled in the desired fixing part 2 of
It is formed to have a perfect circular cross section and a diameter that allows it to fit into the body.

The rod-shaped body 1 is formed so as to be offset by an eccentric amount t from the axis O of the main body portion 1a of the rod-shaped body 1 to the mounting hole 3.

The eccentric shaft portion 1c has a perfect circular cross section, is located in the main body portion 1a as shown in the illustration, and has an appropriate length in the axial direction at the intermediate portion of the insertion portion 1b into the mounting hole 3. It is provided with a smaller diameter than the portion 1a.

Further, the main body portion 1a of the rod-shaped body 1 has an insertion portion 1b.
As shown in FIGS. 4 and 5, they are formed coaxially and with the same diameter,
In terms of uniform thickness, as shown in Figures 9 and 11, the insertion part 1b is aligned with the inner diameter of the mounting hole 3, and the main body part 1a on the hand side is coaxial with it but has a larger diameter. This will be determined as appropriate depending on the purpose of use.

Thus, the insertion portion 1b of the rod-shaped body 1 can be freely inserted into and removed from the mounting hole 3, and after insertion, the rod-shaped body 1 can be freely rotated by holding the hand side.

A fixing eccentric moving body 4 having an eccentric shaft hole 4a is rotatably attached to the eccentric shaft portion 1C of the rod-shaped body 1 formed as described above.
The eccentric shaft part 1C is fitted in such a state that its end surfaces collide with the annular step parts 1d and ld provided around both ends of the eccentric shaft part 1C, thereby preventing movement in the axial direction.

This eccentric cylindrical body 4 is formed so that its outer circumferential surface is approximately the same as the outer circumferential surface of the insertion portion 1b of the rod-shaped body 1 in a predetermined fitting angle state. As shown in FIGS. 4 and 6, the outer circumferential surface of the eccentric cylindrical body 4 is formed so as to protrude slightly in the circumferential direction than that of the insertion portion 1b, and the outer circumferential surface of the eccentric cylinder 4 is formed to protrude slightly from the inner circumferential surface of the mounting hole 3. Lightly involved,
When the rod-shaped body 1 is rotated in the inserted state, the eccentric cylinder 4 is prevented from rotating and only the rod-shaped body 1 is manually rotated.

Further, since the eccentric cylinder 4 is fitted onto the eccentric shaft portion 1c, a slint '4b is provided on the peripheral wall of the cylinder 4 to divide it in the axial direction, as shown in the figure.

Further, the outer circumferential surface of the eccentric cylinder 4 may be formed to be smooth, but from the viewpoint of the adhesion strength when it is crimped to the inner circumferential wall of the mounting hole 3 as described later, the outer circumferential surface of the eccentric cylinder 4 may be formed as shown in the illustrated example. It is preferable to provide a large number of protrusions 4c for preventing removal.

The protrusions 4c... are provided in a number of stripes in the circumferential direction with a chevron-shaped cross section or a substantially serrated cross-section, so that they can be easily inserted into the mounting hole 3, and the protrusions 4a are attached in the pulling direction. It is desirable to provide it so that it can bite into the inner wall of the hole 3.

Further, the rod-shaped body 1 and the eccentric cylinder 4 are molded from metal or synthetic resin, and the eccentric cylinder 4 is formed by the eccentric shaft portion 1 of the rod-shaped body 1.
If it is to be externally packaged via a sulin (4b), it should be made of a suitable elastic material so that the diameter can be expanded and assembled.

The eccentric cylindrical body 4 may be fitted onto the eccentric shaft portion 1c of the rod-shaped body 1 so that it can rotate freely, but as shown in FIG.
As shown in FIGS. 10A and 10B, the eccentric shaft portion 1c and the eccentric cylinder body 4 are provided with a rotation angle regulating protrusion 1e and a long groove 4d, respectively, and are engaged so as to be slidable with respect to each other. Rod-shaped body 1
The state shown in FIG. 10A in which the outer circumferential surface of the insertion portion 1b and the outer circumferential surface of the eccentric cylindrical body 4 are arranged to be approximately the same circumferential surface, and the state shown in FIG. The eccentric cylindrical body 4 may be formed to be rotatable with respect to the rod-shaped body 1 within the range of the state shown in FIG. B.

In the above configuration, in order to fix the rod-shaped body 1 to the straight mounting hole 3 drilled in the fixed part 2 of the cabinet or the like, first, the eccentric cylindrical body 4 is attached to the eccentric shaft portion 1c of the rod-shaped body 1. The outer peripheral surface is aligned so that it is approximately flush with that of the rod-shaped body 1.

In this state, the insertion portion 1b of the rod-shaped body 1 is inserted into the mounting hole 3 as shown in FIG. Therefore, it can be easily inserted into the mounting hole 3, and the insertion resistance due to the eccentric cylindrical body 4 slightly protruding from the rod-shaped body 1 in the radial direction is felt to be small.

When the rod-shaped body 1 is inserted to the desired position, the rod-shaped body 1
Rotate manually or with a tool if necessary.

As a result, the eccentric cylindrical body 4 has a slightly larger diameter than the rod-shaped body 1 as described in ``2'' and is in contact with the inner wall of the supplementary hole 3, so that rotation is stopped at β11 and only the rod-shaped body 1 rotates. Therefore, due to the eccentric rotation of the eccentric shaft portion 1C, the eccentric cylinder body 4 having the eccentric shaft hole 4a moves in the diametrical direction from the rod-shaped body 1, and as shown in FIGS. The state shown in FIG. 10A changes to the state shown in FIGS. 5, 7, and 10B.

As a result, the outer periphery of the eccentric cylinder 4 is suppressed or bitten into the inner wall of the mounting hole 3, and at the same time, the outer periphery of the rod-shaped body 1 is also pressed against the inner wall of the mounting hole 3, so that the rod-shaped body 1 It becomes stuck.

At this time, the rod-like body 1 and the eccentric cylindrical body 4 are in symmetrical positions with respect to the inner wall of the hole 3 with t'fy, and are suppressed or bitten, so that the rod-like body 1 is fixed without tilting.

Father, the maximum eccentric movement of the eccentric cylindrical body 4 with respect to the rod-shaped body 1 is 2.
t, and the adhesion strength is at its maximum at this time.

When removing the fixed rod 1 from the mounting hole 3 as described above, rotate the rod 1 in the opposite direction to that described above or further rotate it in the same direction as above, and the eccentric cylindrical body 4 will be removed from the rod 1. Since they are substantially coaxial, by subsequently pulling out the rod-shaped body 1, the eccentric cylindrical body 4 can also be pulled out.

As explained above, according to the device for attaching and detaching a rod-shaped body according to the present invention, in the device for fixing the rod-shaped body 1 by using the mounting hole 3 drilled in the place where the rod-shaped body 1 should be fixed, such as a cabinet,
An eccentric shaft portion 1c is provided at the insertion portion 1b into the mounting hole 4, and an eccentric cylinder body 4 having an eccentric shaft hole 4a is rotatably mounted on the eccentric shaft portion 1C. When the cylinder 4 moves eccentrically in the radial direction, the outer peripheries of the eccentric cylinder 4 and the rod-shaped body 1 are crimped or bitten into the inner wall of the mounting hole 4, respectively, and the fixed state is maintained. Therefore, after inserting the rod-shaped body 1 into the mounting hole 3, the rod-shaped body 1 can be quickly attached by simply rotating the rod-shaped body 1 in a predetermined direction.
can be fixed in the mounting hole 3, and when pulled out in the axial direction, there is no tapered part unlike conventional ones, so there is not only less slack, but also the gap between the mounting hole 3 and the rod-shaped body 1 can be reduced, and the eccentricity can be reduced. If the eccentricity of the shaft portion 1c is set to be large in advance and the rod-shaped body 1 is rotated with a tool such as a screwdriver, the fixing strength can be increased, and firm and reliable fixing can be achieved. Sufficient support strength for the load applied to the rod-shaped body 1 from above can be obtained.

In addition, unlike the screw-in type, there is no damage to the area around the opening of the mounting hole 3, so even after the rod-shaped body 1 is removed, the appearance can be maintained, and the eccentric cylinder body 4 can be easily displaced. Since this is forcibly performed by the rod-shaped body 1, the eccentric cylinder 4 does not dig into the inner wall of the mounting hole 3 and become unable to be removed during removal, and removal is easy by rotating the rod-shaped body 1 and pulling out. Furthermore, since the eccentric cylinder body 4 is packaged on the eccentric shaft portion 1c of the rod-shaped body 1 and made into a single item, it is convenient to handle without losing any parts.

[Brief explanation of the drawing]

1, 2, and 3 are vertical sectional side views illustrating conventional rod-shaped body attachment/detaching devices, respectively, and FIGS. 4 and 5 are respectively illustrative of a first embodiment of the rod-shaped body attachment/detaching device according to the present invention. Vertical side views of the state inserted into the mounting hole shown and the state fixed in the mounting hole, No. 6
Figure 7 is the Vt-Vt line in Figures 4 and 5,
8 is a side view of the eccentric cylindrical body in the device, FIG. 9 is a side view showing the second embodiment of the device, and FIGS. In the X-X line cross-sectional views in Figure 9, A shows the state in which the eccentric cylinder is housed coaxially with the rod-shaped body, and B shows the state in which the eccentric cylinder has been moved eccentrically to the maximum with respect to the rod-shaped body. FIG. 11 is a side view showing a third embodiment of the same device, and FIG. 12 is a cross-sectional view taken along the line II in FIG. 1... Rod-shaped body 1b... Insertion portion 1c... Eccentric shaft portion 1e... Projection 3... Mounting hole 4 drilled in a cabinet, etc.
... Eccentric cylinder body 4a ... Eccentric shaft hole 4b ... Slit 4c ... Removal prevention protrusion 4d ... Long groove Patent applicant's representative Patent attorney Makoto Ito Figure 9 Figure 1I JP-A-Sho 59-226706 (6) Figure 10 Figure 12

Claims (5)

[Claims] (1) The rod-shaped body has an eccentric shaft portion at a portion to be inserted into a mounting hole drilled in a cabinet bottom, etc., and an eccentric cylinder portion having an eccentric shaft hole is rotatably fitted into the eccentric shaft portion. The rod-shaped body is configured to be eccentrically movable so that the eccentric cylinder and the outer peripheral surface of the rod-shaped body are respectively pressed against the inner wall of the mounting hole by rotation of the rod-shaped body. attachment/detachment fixing device. (2) The eccentric cylindrical body is disposed coaxially with the rod-shaped body and is formed to slightly protrude in the radial direction from the outer peripheral surface of the rod-shaped body. A device for attaching and detaching a rod-shaped body. (3) The eccentric shaft portion of the rod-shaped body and the eccentric cylindrical body are each formed with a protrusion and a long groove so that they can mutually rotate by a desired rotation angle. A device for attaching and detaching the rod-shaped body. (4) The attachment/detachment device for a rod-shaped body according to claim 1, wherein the eccentric cylindrical body is formed with a protrusion on its outer peripheral surface to prevent it from coming off. (5) The attachment/detachment device for a rod-shaped body according to claim 1, wherein the eccentric cylindrical body is formed with a slit provided in the axial direction of the peripheral wall thereof.