JPH0724340B2 - Rubber foot mounting method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber foot attaching method for attaching rubber feet to various electronic devices.

2. Description of the Related Art Conventionally, it has been known that rubber feet are attached to the chassis of various electronic devices as shown in FIGS.

First, the conventional example shown in FIG. 5 and FIG. 6 will be described. Reference numeral 1 is a rubber foot that is attached to a mounting hole 3 of a chassis 2 by a screw 4 and a washer 5. A fitting hole 6 for the screw head 4a formed over substantially the center portion, and an insertion hole 7 for the screw screw portion 4b formed so as to communicate with the upper end of the fitting hole 6 and penetrate the upper end of the rubber foot 1. Is equipped with. Therefore, the rubber foot 1
When attaching to the portion of the mounting hole 3 of the chassis 2, the rubber foot 1 is brought into contact with the lower portion of the mounting hole 3, the washer 5 and the screw 4 are inserted through the fitting hole 6, and the insertion hole 7 is penetrated. The rubber foot 1 is attached by screwing the threaded portion 4b of the screw 4 into the attachment hole 3 while tapping it.

Next, the conventional example shown in FIGS. 7 and 8 will be described. Reference numeral 11 is a rubber foot which is attached to the mounting hole 13 of the chassis 12 by a pin 14, and the rubber foot 11 is fitted into the mounting hole 13 at the center of the upper end thereof. In addition, the projection 16 is integrally provided with a cross-shaped slit 15 when viewed from above. Further, at the center of the rubber foot 11, there is formed a fitting hole 17 of the pin head 14a formed from the lower end to a substantially central portion in the vertical direction, and between the upper end of the fitting hole 17 and the slit 15. An insertion hole 18 for the pin shaft portion 14b is provided. The width of the slit 15 is smaller than the diameter of the pin shaft portion 14b. Therefore, when attaching the rubber foot 11 to the portion of the mounting hole 13 of the chassis 12, the rubber 11 is brought into contact with the lower portion of the mounting hole 13 and the projection 16 is fitted into the mounting hole 13, and in that state, the pin 14 The protrusion 16 is expanded from the inside of the slit 15 by the shaft portion 14b of the pin 14 by fitting the fitting hole 17 into the slit 15 portion, and the protrusion 16 is engaged with the mounting hole 13. The rubber feet 11 are attached in this state.

Next, the conventional example shown in FIGS. 9 and 10 will be described. Reference numeral 21 is a rubber foot that is mounted in a mounting hole 23 of a chassis 22. And a protrusion 26 having a groove 25 that fits inside the mounting hole 23 at a portion continuously formed with the upper end of the rubber foot 21.
It is equipped with. In addition, a large-diameter hole is formed in the center of the rubber foot 21 from the lower end to almost the center in the vertical direction.
27, and a small-diameter hole 28 formed between the upper end of the hole 27 and the slit 24. Therefore, when attaching the rubber foot 21 to the mounting hole 23 portion of the chassis 22, the protruding portion 26 of the rubber foot 21 is pushed into the mounting hole 23 from below while the protruding portion 26 is squeezed at the slit 24 portion. As a result, the groove 25 is fitted into the mounting hole 23, and the rubber foot 11 is mounted.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In these conventional examples, those shown in FIGS. 5 and 6 require screws 4 and washers 5, and those shown in FIGS. 7 and 8 require pins 14. Yes, this is a cause of cost increase. Further, in the case shown in FIGS. 7 and 8 and the cases shown in FIGS. 9 and 10, it is necessary to form the slits 15, 24 in the protrusions 16, 26 provided at the upper ends of the rubber feet 11, 21. At the same time, in the structure shown in FIGS. 9 and 10, it is necessary to form the groove 25 in the protrusion 26 in addition to the slit 24, and the mold becomes complicated because the slits 15 and 24 and the groove 25 are formed. There was a problem.

The present invention solves such a problem, the rubber feet can be easily attached to the chassis without the need for screws and pins as in the past, and the mold for manufacturing the rubber feet is simple. The purpose is to reduce the cost by adopting a different structure.

Means for Solving the Problems In order to achieve this object, the rubber foot attaching method of the present invention is
A first step of applying the rubber foot, which has a protrusion integrally formed at the upper end of the rubber foot to the mounting hole of the chassis so as to have a diameter larger than the inner diameter of the mounting hole, from below the mounting hole. After this first step, a step is formed in the hole formed in the center of the rubber foot from below to the inside of the protrusion so that the diameter is smaller than the hole and longer than the depth of the hole. A second step of inserting the push shaft portion formed on the attached rod, and after the second step, the projection portion is extended by the push shaft portion, and the outer diameter of the projection portion fits into the mounting hole. After reducing the diameter as much as possible, in this state the third step of inserting the protrusion into the mounting hole, and after the third step, the push shaft is pulled out from the hole and inserted into the mounting hole. The protrusion is engaged with the mounting hole by the restoring force of the protrusion.

By this method, the push shaft formed on the stepped rod,
By reducing the diameter of the protrusion of the rubber foot and pressing it against the mounting hole of the chassis, and then pulling out the pushing shaft portion, the restoring force of the protrusion engages with the mounting hole, so the rubber foot can be easily attached to the chassis. Can be installed.

Therefore, unlike the prior art, there is no need for screws or pins, and there is no need for slits in the protrusion. Further, since it is not necessary to provide a groove in the protrusion as in the conventional case, the mold for manufacturing the rubber foot is very simple and the mold cost is reduced.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, reference numeral 31 denotes a rubber foot which is attached to a mounting hole 33 of a chassis 32 from below, and a protrusion having an outer diameter larger than the inner diameter of the mounting hole 33 at the upper end of the rubber foot 31. 34 is integrally formed. A hole 35 is formed at the center of the rubber foot 31 from the lower end to the inside of the lower end of the protrusion 34. 36 is a stepped rod used when attaching the rubber foot 31 to the mounting hole 33, and the push shaft portion at the tip of the stepped rod 36.
37 is formed with a diameter smaller than the inner diameter of the hole 35 and longer than the depth of the hole 35, and a step 38 is formed at the base end of the push shaft 37.
Are formed.

In the above structure, when the rubber foot 31 is mounted in the mounting hole 33 of the chassis 32, the upper end of the protrusion 34 of the rubber foot 31 is brought into contact with the mounting hole 33 from below, and in this state, as shown in FIG. Insert the push shaft 37 of the attached rod 36 into the hole 35 of the rubber foot 31 and push the stepped rod 36 to extend the protrusion 34 up and down.
The outer diameter of 34 is made small enough to fit into the mounting hole 33. As a result, as shown in FIG. 3, the protrusion 34 is fitted into the mounting hole 33 and protrudes above the mounting hole 33. In this state, the push shaft portion 37 is pulled out from the hole portion 35 to project the protrusion portion.
As shown in FIG. 4, the outer diameter of the portion 34a projecting above the mounting hole 33 is 34 because the elasticity of the rubber is used to restore it.
A portion 34b having a diameter larger than the inner diameter of 3 and located inside the mounting hole 33 is pressed against the inner surface of the mounting hole 33, and the chassis 32 is engaged with the rubber foot 31 in an engaged state so that the rubber foot 31 can be mounted. Done. The step portion 38 of the stepped rod 36 is the push shaft portion.
When 37 is inserted into the hole 35 of the rubber foot 31 and the protrusion 34 is extended, it contacts the lower surface of the rubber foot 31 as shown in FIG. I try not to break it by applying (stretching force).

By the way, in order to firmly attach the rubber foot 31 to the chassis 32, even if the difference between the outer diameter of the protrusion 34 of the rubber foot 31 and the inner diameter of the attachment hole 33 is increased, the stepped rod 36 should be used. Thus, the rubber feet 31 can be easily attached.

As described above, according to the rubber foot attaching method of the present invention, when attaching the rubber foot to the attaching hole of the chassis, the diameter of the attaching hole of the chassis is larger than the inner diameter of the attaching hole at the upper end of the rubber foot. The first step of applying the rubber foot having the integrally formed protruding portion from below the mounting hole, and after the first step, the rubber foot from the lower side to the center portion of the rubber foot. A second step of inserting a push shaft portion formed in the stepped rod so as to have a diameter smaller than the hole portion and longer than the depth of the hole portion into the hole portion formed over the inside of the portion; After the step of (1), the protrusion is stretched by the push shaft portion, the outer diameter of the protrusion is reduced to such an extent that the protrusion can be fitted into the mounting hole, and then the protrusion is inserted into the mounting hole in this state. Third step, and after this third step, pull out the push shaft from the hole As a result, the projection is engaged with the mounting hole by the restoring force of the projection that is inserted into the mounting hole. Therefore, the pushing shaft portion formed on the stepped rod reduces the diameter of the protruding portion of the rubber foot and presses it against the mounting hole of the chassis, and then the pushing shaft portion is pulled out, whereby the mounting force is restored by the restoring force of the protruding portion. Since the holes are engaged, the rubber feet can be easily attached to the chassis.

Therefore, unlike the prior art, there is no need for screws or pins, and there is no need for slits in the protrusion. Furthermore, since it is not necessary to provide a groove in the protrusion as in the conventional case, there is an effect that the mold for manufacturing the rubber foot is very simple and the mold cost is reduced.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention.
The figure is an exploded perspective view of the chassis and the rubber feet, FIGS. 2 to 4 are sectional views showing the order of attaching the rubber feet, FIGS. 5 to 10 show a conventional example, and FIG. 5 shows a first conventional example. FIG. 6 is an exploded perspective view of the chassis and the rubber feet, FIG. 6 is a cross-sectional view showing the rubber feet attached state, FIG. 7 is an exploded perspective view of the chassis and the rubber feet in the second conventional example, and FIG. 8 is the rubber foot attached state. FIG. 9 is an exploded perspective view of a chassis and rubber feet in a third conventional example, and FIG. 10 is a sectional view showing a state where the rubber feet are attached. 31 …… Rubber feet, 32 …… Chassis, 33 …… Mounting hole, 34 ……
Projection, 35 …… Hole, 36 …… Step rod, 37 …… Pushing shaft, 38
…… Step.

Claims (1)

[Claims] 1. A rubber foot having a protrusion integrally formed at the upper end of the rubber foot with a diameter larger than the inner diameter of the mounting hole is fitted into the chassis mounting hole from below the mounting hole. In the first step, and after the first step, the hole formed in the center of the rubber foot from below to the inside of the protrusion has a smaller diameter than the hole and a depth smaller than the depth of the hole. The second which inserts the push shaft formed on the stepped rod so that it becomes longer
Step and after the second step, the protrusion is stretched by the push shaft portion and the outer diameter of the protrusion is reduced to such an extent that the protrusion can be fitted into the mounting hole, and then the protrusion is in this state. A third step of inserting the protrusion into the mounting hole, and by the restoring force of the protrusion inserted into the mounting hole by pulling out the pushing shaft portion from the hole after the third step A method for attaching a rubber foot, which engages with the attachment hole.