JPH0433015Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a hanging fixture for a picture frame made of an extruded material such as aluminum.

[Prior art]

In this type of picture frame, the frame generally has a connecting groove into which an L-shaped connecting plate is inserted, and a cam-type hanging fitting has been attached using the connecting groove.

The connecting groove of the frame is a dovetail groove that opens on the back side and has locking pieces facing each other on both sides of the opening.Using this, the conventional cam-type hanging fitting has a dovetail groove on the bracket that protrudes from the knob. It has a protruding eccentric cam that hangs on both hooks of the groove, and when the knob is folded down,
As a result of the eccentric cam passing over the dead point and coming into pressure contact with the bottom surface of the dovetail groove and the latch piece, the knob was configured to be fixed in the laid down state.
−153567).

[Problem that the invention attempts to solve]

Therefore, according to the conventional cam-type hanging bracket, it is necessary for the frame to have a dovetail groove that opens on the back side, and because of this dovetail groove that opens on the back side, the picture frame does not appear when viewed from the back side. It felt like a formality. Furthermore, since the width of the frame is restricted to be narrow due to the dovetail grooves, it has not been possible to make the frame design smart in this respect as well.

When installing the hanging bracket, in order to insert the eccentric cam into a dovetail groove with a narrow mouth width, it is necessary to align the eccentric cam parallel to the dovetail groove, insert it, and then correct the phase, which is a cumbersome direction change operation. In the knob, the eccentric cam presses against the inner surface of the dovetail groove beyond the dead point, that is, beyond the maximum pressure point, and the pressure force prevents it from rising, but fixation by such pressure contact is reliable. There was also the problem that the hanging fittings easily came off due to the lack of elasticity.

Regarding this problem, the applicant et al. provided a claw part on the bracket that, when the knob is pulled by a hanging string, engages the hooking piece of the dovetail groove by the force, and the knob is lifted up due to the engagement of the claw part. In order to avoid this problem, the suspension fittings were constructed so that they would not come off as much as the weight of the picture frame was applied to the hanging cords (Utility Application No. 144855/1983, unpublished).

In view of the above-mentioned circumstances, this idea eliminates the need to open dovetail grooves on the back side of the frame.
By omitting the dovetail groove on the back, the appearance of the frame can be enhanced.Also, since the frame is hung in the direction in which the hanging string is pulled, the hanging bracket never comes off and is extremely easy to install and remove. is intended to provide.

[Means for solving problems]

The structure of this invention to achieve the above object is that the frame has a concave groove opened on the inner surface with the back plate as the bottom surface, and a hanging piece is provided protruding from the opening edge of the concave groove. A base piece is provided vertically at one end of the knob that also serves as a hook, and a support shaft of an eccentric cam is provided protruding from one end of the base piece, and the eccentric cam has an eccentric protrusion that projects vertically with respect to the plane direction of the knob. The shape of the eccentric protrusion is acute at both the upper and lower ends, but the upper end is rounded into an arc shape and the lower end is sharp, and the height of the eccentric cam is equal to the inner height of the groove. The eccentric protrusion is formed to be slightly larger than that of the knob, and due to the inverted shape of the knob, the eccentric convex part is irremovably latched on the inside of the above-mentioned latching piece of the concave groove, and an eccentric cam that is pressed against both the upper and lower surfaces of the concave groove is attached to the base end of the above-mentioned knob. The gist thereof is that the pressure contact is made just before the knob is completely inverted.

[Effect]

According to the above configuration, when attaching the hanging bracket to the picture frame, the eccentric cam is inserted into the groove opened inside the frame, and then the knob is twisted around the spindle of the eccentric cam to lower it down. The cam comes into pressure contact with both the upper and lower surfaces of the groove, and the eccentric convex part is irremovably latched to the inside of the latching piece of the groove, so next,
When the claw is inserted into the recessed groove and the claw is latched under the latch piece, the knob cannot be raised, so that the eccentric cam is kept in the pressed and latched state. Ru. Also, if you install the hanging bracket so that the claw is above the picture frame than the eccentric cam, the force of pulling the knob with the hanging string will dent the hook so that it does not come off the hook. It acts as a force to hold the groove in place.

〔Example〕

Next, an embodiment of this invention will be described based on the drawings.

The drawing shows one embodiment, and the picture frame G is composed of a frame 1, a back plate 2, a transparent plate 3, etc., and a hanging fitting P is attached to the left and right vertical frames 1, 1. Note that the vertical relationship will be explained with the back surface of the back plate 2 as the bottom surface, that is, the back side of the frame G as the top.

The frame 1 has a hanging wall 4 for a transparent plate 3 at the lower end of the side wall 1a, and two inward protrusions 5 and 6 at the upper end, forming a groove 8 opening on the inner surface. A locking piece 7 is provided at the tip of the inward projecting piece 5 to project downward. Therefore, the groove 8 is an incomplete dovetail groove whose opening is narrower on one side.

In addition, by protruding from the tip of the lower inward projecting piece 6 and near the tip of the hanging wall 4 so as to face each other, the connecting groove 9 of the frames 1, 1 is provided between them.
is formed. Therefore, there is no need for a connecting groove that opens upward (back side).

The hanging fitting P is constructed by having a base piece 11 hanging down from one end of a knob 10, and having a support shaft 13 of an eccentric cam 12 and a claw part 14 protruding from the base piece 11.

The knob 10 has a hanging string 15 on the opposite side of the support shaft 13.
A latching hole 16 is provided so that the frame 1 can be hung thereon, and a tongue piece 17 that can be hung on the frame 1 is provided in a protruding manner at a location away from the center of rotation about the support shaft 13.
Also, on the top surface, an arrow 18 indicates the direction in which the hanging cord 15 is hung.
It is indicated by.

The base piece 11 is formed to face the inner surface of the frame 1, and the support shaft 13 of the eccentric cam 12 projects from one end of the base piece 11. Eccentric cam 1
Eccentric convex portions 12a and 12b that protrude vertically with respect to the plane direction of the knob 10 are formed on the knob 2.

Regarding the shape of the eccentric convex portions 12a and 12b, the cross section is approximately rhombic or approximately elliptical, and the upper and lower ends 12
Both a and 12b are acute-angled, but the upper end 12a is rounded into an arc shape, and the lower end 12b is sharp. The height of the eccentric cam 12 is formed to be slightly larger than the inner height between the upper and lower surfaces 8a and 8b in the groove 8 of the frame.

The claw portion 14 is provided protruding from the base piece 11 in parallel with the support shaft 13, and is formed into a triangular shape whose protrusion dimension becomes shorter in the direction of the support shaft 13 so that it can be easily hung under the hooking piece 7 of the groove 8. It has been done.

Note that the hanging fittings P, P attached to the left and right frames 1, 1 have a symmetrical shape.

When attaching the hanging fitting P to the picture frame G, as shown in FIG. 1, the eccentric cam 12 is inserted into the groove 8 of the frame 1 while the knob 10 is erected and the eccentric protrusions 12a and 12b are laid down. The knob 10 is laid down around the support shaft 13. Then, the eccentric cam 12 rotates within the groove 8, and the eccentric protrusions 12a and 12b come into pressure contact with the upper and lower surfaces 8a and 8b within the groove 8 (see FIG. 8), and the upper eccentric protrusion 12a
is irremovably caught on the hooking piece 7.

Now, the knob 10 can be rotated around the hooked part (eccentric protrusion 12a) of the eccentric cam 12 on the hooking piece 7.
is in a state where it can rotate a little in the plane direction Q (Fig. 6), and next, by pushing the knob 10 with the side edge, the claw part 14 can be easily pushed under the latch piece 7. It is possible (Figures 7 and 9).

When the claw portion 14 is hooked under the latch piece 7 in this way, the knob 10 will never be lifted up due to the hook. In other words, the fixed state of the eccentric cam 12 to the concave groove 8 is thereby maintained (the ninth
figure).

Furthermore, when the picture frame G is hung on the wall by the hanging string 15 (FIG. 2), the force pulled by the hanging string 15 is applied to the hooked portion of the eccentric cam 12 (the eccentric convex portion 12).
As a result of the force acting mainly on a) to push the claw portion 14 into the groove 8, the claw portion 14 does not come off from under the locking piece 7. Therefore, as long as the picture frame G is suspended by the hanging cord 15, the hanging fitting P will never come off, no matter how shaken or shocked it is received.

When removing the hanging fitting P, remove the claw part 14 from the locking piece 7 of the groove 8 by grasping the knob 10 and pulling it sideways, and then lifting the knob 10 to release the eccentric cam 12. Unpin. In other words, the work is exactly the opposite of the installation.

[Effect of idea]

As explained above, according to this invention, it is not necessary to provide a dovetail groove on the back side of the frame of the picture frame, so the frame has a narrow and sharp feel without dovetail grooves on the back side, resulting in a neat design. It is possible to provide a good-looking picture frame.

In addition, when installing the hanging bracket, the eccentric cam can be fixed in the groove by simply inserting the eccentric cam into the groove with the knob in the upright position, and then lowering the knob. Since it is necessary to insert the eccentric cam into the narrow concave groove of the mouth, there is no need for troublesome operations such as turning a knob to change direction.

Furthermore, although both the upper and lower ends of the eccentric protrusion are acute-angled, the upper end is rounded into an arc shape and the lower end is sharpened, so that the upper end slides against the upper surface of the frame groove. , the lower end bites into the lower surface of the groove.

Therefore, the hanging fixture of the present invention is not limited to the principle of pressure welding and fixing, but the pressure welding starts just before the knob is inverted, and after the pressure welding, the lower end of the eccentric convex part bites into the lower surface of the concave groove, and the final By sliding and rotating the upper end of the eccentric convex part about the biting part of the lower end of the eccentric convex part, a stable fixed state can be obtained regardless of the size of the biting of the lower end of the eccentric convex part.

In this way, despite the biting action of the lower end of the eccentric protrusion, the knob can be smoothly lowered without resistance due to the sliding action of the upper end of the eccentric protrusion. This has the excellent effect of preventing damage to the parts since no excessive force is applied to them.

On the other hand, the conventional type which is fixed only by pressure contact of an eccentric cam has a major drawback in that the pressure contact easily comes off due to a force in the opposite direction to the pressure contact direction.

This was not only a problem of the pressure welding coming off, but also the hanging hardware coming off, which caused the picture frame itself to fall, which was the biggest drawback, leading to serious accidents.

In contrast, in the case of the present invention, as mentioned above, the pressure contact state of the eccentric cam convex portion is based on the biting pressure contact and the sliding pressure contact at both the upper and lower ends, so even if a force is applied in the opposite direction to the pressure contact direction, the pressure contact state is never comes off easily. Therefore, as a hanging fixture, it is excellent in the most important respects.

In addition, in pressure welding fixation using eccentric cams, the strength of the pressure welding fixation generally occurs due to variations in the dimensional tolerance of the eccentric cam, but in the case of conventional pressure welding fixation only, the tolerances are maximized. If this happens, the pressure welding will be unstable, or the fixing angles will be different, making it impossible to set a symmetrical hanging position, which will not only make it difficult to use as a hanging fixture, but will also be extremely dangerous in terms of the function of hanging. There were cases where I could say that.

In contrast, the suspension fitting of the present invention has a structure in which both the upper and lower ends of the eccentric cam convex portion are pressed against both the upper and lower surfaces within the frame groove, and is stable without wobbling or shifting from the press-welded point as a reference point. In addition, even if there are some variations in dimensional tolerances, and even if there are slight differences in the degree of fixation due to the size of the pressure weld, the position of the hanging hole where the hanging cord is hung will never be different each time, It also has the excellent effect of being able to reliably set the position of the latching hole.

In addition, since the eccentric convex part of the eccentric cam engages with the hooking piece of the concave groove, by operating the knob around the hooked point, it is possible to easily hook the claw part under the hooking piece. The hanging fittings are extremely easy to attach and can be attached and detached with one touch.

Moreover, since the knob does not lift up due to the hook on the hook, the eccentric cam remains fixed, and in addition, the hanging string acts to hold the hook on the hook, so when the picture frame is hung on a wall, it is difficult to hang it. This has the excellent effect of ensuring that the metal fittings never come off.

In addition, in the above embodiment, a case has been described in which the hooking piece of the frame groove is provided to protrude downward from the upper edge of the opening of the groove, but the hanging piece is provided to protrude upward from the lower edge of the opening of the groove. Even in such a case, the present invention can be implemented in the same manner and the object of the present invention can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment, and FIG. 1 is a perspective view showing an operation procedure for starting installation of a hanging fitting, and FIG. 2 is a perspective view showing an installation state. 3, 4, and 5 are a plan view, a front view, and a side view of the hanging fitting. Fig. 6 is a plan view showing the intermediate installation procedure, Fig. 7 is a plan view showing the installation state, and Figs. 8 and 9 are cross-sectional views taken along line A-A and line B-B in Fig. 7. It is. G...Picture frame, P...Hanging fittings, 1...Frame,
7...Latching piece, 8...Concave groove, 8a...Top surface, 8b
... lower surface, 10 ... knob, 11 ... base piece, 12
... Eccentric cam, 13 ... Support shaft, 14 ... Claw portion, 1
7... Tongue piece.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a picture frame in which a groove is provided on the inner surface of the frame with the back plate as the bottom surface, and a hanging piece is protruded from the opening edge of the groove, one end of the knob that also serves as a string hanger. A base piece is provided vertically on the base piece, a support shaft of an eccentric cam is provided protruding from one end of the base piece, and an eccentric convex portion is formed on the eccentric cam and projects vertically with respect to the plane direction of the knob, and The shape of this eccentric protrusion is acute at both the upper and lower ends, but the upper end is rounded into an arc shape and the lower end is sharp, and the height of the eccentric cam is formed to be slightly larger than the inner height of the groove. An eccentric protrusion is irremovably latched to the inside of the above-mentioned locking piece of the concave groove when the knob is inverted, and an eccentric cam is provided at the base end of the knob, and the eccentric cam is pressed against both the upper and lower surfaces of the concave groove, and the pressure contact is as described above. A hanger for a picture frame, characterized in that it is configured to look like it was made just before the inversion of the knob was completed. 2. The picture frame hanging fixture according to claim 1, further comprising a claw portion that engages with the hooking piece of the recessed groove to prevent the knob from being lifted. 3. The picture frame hanging fixture according to claim 1 or 2, wherein the knob is provided with a tongue piece that hangs over the top surface of the frame due to its inverted shape.