JPS5829284Y2 - Futsuku - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hook that can be easily hung, for example, on a latching ring at the end of a coil spring, and once it is latched, it can be latched with just a shock. It is an object of the present invention to provide a hook that does not come off, is suitable for mounting, for example, a ceiling-embedded speaker unit, and can be manufactured in large quantities at a low cost.

FIG. 1 is a perspective view of an example of a ceiling-embedded speaker unit to which the hook of the present invention can be applied, and FIG. 2 is an exploded perspective view thereof.

In Figures 1 and 2, the speaker unit 1 can be mounted using nails, screws,
It has a structure that allows it to be installed without using any bolts, and because it is easy to install, it is often used when constructing mammoth buildings.

The speaker unit 1 is shipped with the speaker body 3 mounted and fixed on a rectangular mounting plate 4 in advance, and the ceiling portion 2
Several types of decorative plates 5 are available to be attached to the lower surface of the machine so that customers can select their favorite color and shape according to their wishes.

After the coupling transformer 6 is attached, the speaker body 3 is wrapped with a cover 7 and fixed to the mounting plate 4 with screws 8, and a coil spring 9 used for attaching the decorative plate 5 to the mounting plate 4 is wound around the speaker body 3 in advance. It is attached.

Both ends of this coil spring 9 are inserted through holes 4a of the mounting plate 4, and hooks 10 are inserted into hook rings 9a formed at each end.
is the latch.

When installing the speaker unit 1, grasp the handle 4b at the center of the mounting plate 4 and insert it into the round hole 2a of the ceiling part 2 with the mounting plate 4 in a vertical position.

Next, twist the wrist to bring the mounting plate 4 into a horizontal state, place it on the back side of the ceiling 2, and release the hand.

Note that since the vertical length of the mounting plate 4 is larger than the diameter of the round hole 2a, the mounting plate 4 will not fall even if you release your hand.

Next, one hook 10 that is locked to the lower surface of the mounting plate 4
is pulled downward and is hooked to one of the hooking protrusions 5a provided on the back surface of the decorative board 5.

Next, the other hook 10 is similarly pulled downward and hooked to the other hooking protrusion 5a on the back surface of the decorative board 5.

As a result, the decorative board 5 is integrated with the mounting plate 4 while holding the ceiling part 2, and the speaker main body 3 is embedded in the ceiling part 2 and fixed in a twisted state.

At this time, the hook 10 is completely retracted into the recess formed on the lower surface of the mounting plate 4 and is locked in the opening of the hole 4a.

FIG. 3 shows a partially cut away longitudinal sectional view of a state in which a conventional hook is applied to the above-mentioned speaker unit.

In Fig. 3, the conventional hook 11 is made of a steel material with a circular cross section.
It is constructed by bending it into a letter shape.

The bending radius of the bent portion 12 on the hooking side of the coil spring 9 is smaller than the bending radius of the bent portion 13 on the hooking side of the decorative board 5, and the tip of the bent portion 13 has a gap with other parts of the hook 11. It is layered.

A retaining ring 9a formed at the end of the coil spring 9 is fitted into the bent portion 12 from the tip side of the bent portion 12.

However, in the conventional hook 11, the material cost of the steel material itself is high, and even when manufactured individually, each piece must be formed using a bending jig (not shown). There may be burrs left on the parts from cutting, and if you forget to remove these burrs, the worker may injure his or her fingers when installing the speaker unit.Furthermore, the installation worker may pull the coil spring 9 again. Sometimes hook 11 from between the fingers
When the coil spring 9 is pulled out, the coil spring 9 contracts and the hook 11
There is a possibility that the hook 11 may come off from the retaining ring 9a due to the impact when it hits the opening of the hole 4a of the mounting plate 4. Since the hook 11 is made of steel, there are problems such as the hook 11 being locked at an angle and being difficult to pull out.

Furthermore, in the conventional hook 11, the tip of the bent portion 13 is overlapped with the other portion of the hook 11 with a gap, so it tends to be bulky when a plurality of products are tied together and packed in a bag. The packed hooks are intricately intertwined! However, it also had some problems, such as having to unravel it each time it was used.

The present invention is obtained by eliminating some of the above-mentioned flat features, and an embodiment thereof will be described below with reference to FIG. 4.

FIG. 4 shows a partially cutaway vertical side view of the hook according to the present invention applied to the speaker unit.

In FIG. 4, the hook 21 in this embodiment is formed by stamping a sheet of iron into a roughly S-shape using a press.

The hook 21 is a small-diameter arc-shaped portion 2 that hooks the hook ring 9a.
2 and a large-diameter arcuate portion 23 for hooking the latch projection 5a, and the width of each part of the hook 21 is approximately the same except for the stopper portion 22a formed at the end of the small-diameter arcuate portion 22. Width t
It is said that

This width t is smaller than the inner diameter d of the locking ring 9a, but since the width ts of the stopper portion 22a is larger than the inner diameter d, the locking ring 9a cannot be fitted into the stopper portion 22a.

Therefore, the hook 21 cannot be hooked onto the hook 21 from the small-diameter arcuate portion 22, and as will be described later, the hook 9a once hooked onto the small-diameter arcuate portion 22 has a small diameter. It cannot be removed from the end side of the arcuate portion 22.

That is, when the hook 21 is to be hooked to the hook ring 9a,
Insert the retaining ring 9a from the end side of the large diameter arcuate portion 23,
While feeding the hook 21, the hook ring 9a is hooked onto the small diameter arcuate portion 22.

Once the hook ring 9a is hooked to the hook 21 in this way, the hook will not come off even if an external impact is applied.

Therefore, even if the hook 21 slips from the hand and collides with the ceiling 2 due to the force of the coil spring 9 when the speaker unit 1 is being installed, the hook 21 will not come off.

In addition, since the hook 21 is stamped from a steel plate, the punched end surface is flat, and therefore, when the hook 21 is locked at the open end of the hole 4a by the spring force of the coil spring 9, the hook 21 always remains in the true state. Since the hook 21 is locked in a ready state, the operator can easily grasp the hook 21 from below, and therefore the work efficiency is extremely high.

Furthermore, since the hook 21 having the above structure is molded using a press, it is suitable for mass production, and the raw material cost is lower than that of the conventional hook 11 that uses steel, so it is possible to significantly reduce costs. It is.

Moreover, by performing simple barrel polishing after punching with a press, burrs can be removed, and injuries to the hands of workers can therefore be reliably prevented.

Incidentally, in the above embodiment, a bracket may be used instead of the mounting plate 40, and in that case as well, the decorative board 5 is latched by a coil spring that passes through the bracket.

Further, the hook 21 according to the present invention can also be used as a hook for a device other than the speaker unit 1.

Further, the decorative board 5 is not limited to a rectangular plate shape, but other shapes such as a disk shape, an elliptical plate shape, etc. can also be used.

As mentioned above, the hook according to the present invention has a hook having a pair of arcuate portions punched out from a single plate into a roughly S-shape, and a hook having a pair of arcuate portions that is hooked to the end of one of the arcuate portions. A stopper part is formed to prevent the passing of the hanging ring to be stopped, and each part except the stopper part has approximately the same width. It is possible to latch on one arcuate part, but once the latching ring is latched on the one arcuate part, a part of the stopper can be latched from the end of the one arcuate part. Since the structure is designed to prevent the ring from coming off, by keeping the hanging ring hooked to one of the arcuate parts, it is possible to reliably prevent the hanging ring and the hook from easily coming off. In addition, the shape is suitable for punching and forming using a press, etc., so it is suitable for mass production, and inexpensive iron materials can be used as raw materials, making it possible to significantly reduce costs. Since the material can be formed flat with a thickness approximately equal to the thickness of the raw material, it does not become bulky when packed into bags as with conventional bending hooks, and compact bags can be packed. Since there is no complicated tangle in the bag, the hook can be used immediately after being removed from the bag.

[Brief explanation of drawings]

Figures 1 and 2 are a perspective view and an exploded perspective view of an example of a ceiling-embedded speaker unit, respectively; Figure 3 is a partially cutaway longitudinal sectional view of a conventional hook applied to the speaker unit; FIG. 4 is a partially cut away longitudinal sectional view of the hook according to the present invention applied to the speaker unit. 9a... Hanging ring, 21... Hook, 2
2, 23... Arc-shaped part, 22a... Stopper part.

Claims (1)

[Scope of utility model registration request] Approximately S
A stopper portion is formed at the end of one arcuate portion to prevent passage of a locking ring that is hooked to the arcuate portion, and the width of each portion except the stopper portion is approximately the same. -, the latching ring can be latched to the one arcuate part only when it is inserted from the other arcuate part, and once the latching ring is latched to the one arcuate part The hook is characterized in that a portion of the stopper is configured to prevent the retaining ring from detaching from the end of the one arcuate portion when the hook is opened.