JP2691886B2 - Door stop - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a door stop vertically fixed on a floor surface.

[0002]

2. Description of the Related Art
I have applied for a floor stop with a derailment described in the publication. Further, the present inventor himself has made a door stop as shown in FIG. 4 well known. The first door stop is one in which a stepped portion is provided at the upper end of the vertical support shaft, a ring-shaped cushioning body made of a rubber material is fitted therein, and a warping prevention member is provided at the upper end of the support shaft. is there. Then, a bolt hole is formed on the lower surface of the support shaft and is fixed to the floor surface via an anchor bolt. In the second door stop shown in FIG. 4, a stepped hole is formed in the buffer 3 itself, and the upper end of the support shaft 6 is fitted into the large diameter hole. Then, a bolt hole 17 is bored in the support shaft 6 from the lower surface side thereof, and a small through hole 1 is bored in the bottom surface thereof. Then, the caulking pin 13 with a lid is mounted in the through hole 1 and the shaft end thereof is caulked from below to form a caulking portion 18, whereby the buffer body 3 is fixed to the support shaft 6 so as not to come off. Then, the anchor body 14 combined with the ball member 15 is bite into the hole formed in the floor surface 16, and the bolt hole 17 of the support shaft 6 is screwed and fastened to the anchor body 14.

[0003]

In all of the conventional doorstops, bolt holes are provided on the lower surface side of the support shaft. Then, the bolt hole is screwed and fastened to an anchor bolt which is erected and fixed on the floor surface. Therefore, there is a drawback that the installation of the anchor is always a condition on the site and the installation of the door stop is troublesome. Therefore, the present invention allows various fasteners to be inserted and fixed to the floor from the head side of the shock absorber, increases versatility, and allows the shock absorber and the support shaft to be reliably integrated with a simple structure. The aim is to provide a hit, and the following means will be taken to achieve that goal.

[0004]

A door stop according to the present invention comprises a rubber elastic buffer body 3 having a circular cross-section outer periphery and a through hole 1 formed on an axis, and an inner peripheral surface inside the through hole 1. An annular plate 4 for fixing the support shaft, which is exposed and is embedded and fixed in the buffer body 3.
And has an outer diameter that is arranged coaxially with the axis of the cushioning body 3 and has an outer diameter smaller than the outer diameter of the cushioning body 3, and has a fastener through hole 5 on the axis line, the upper end of which is the inner portion of the annular plate 4. A support shaft 6 fitted on the peripheral surface and fixed to the annular plate 4 by caulking;
An upper lid 8 fitted on the upper end of the through hole 1 of the buffer body 3.
And Further, in a preferred embodiment thereof, a fastener 9 having a shaft portion 9a having an external thread and a head portion 9b larger than the shaft portion 9a is inserted into the through hole 1 and the fastener through hole 5, The tip is screwed and fastened to the floor surface, and the head portion 9b is seated on the upper end of the support shaft 6.

According to still another aspect of the invention, a rubber having a circular outer peripheral cross section, a through hole 1 on the axis, and an outer cylindrical fitting annular groove 2 concentric with the through hole 1 on the lower end surface. A buffer body 3 having elasticity; and an annular plate 4 for fixing a support shaft, the inner peripheral surface of which is exposed in the through hole 1 and which is embedded and fixed in the buffer body 3.
The inner peripheral surface of the annular plate 4 is arranged coaxially with the axis of the buffer body 3, has an outer diameter smaller than the outer diameter of the buffer body 3, has a fastener through hole 5 on the axis line, and has an upper end on the annular plate 4. A support shaft 6 which is fitted into the annular plate 4 and is fixed to the annular plate 4 by crimping, and an upper end portion of which is projected and fitted onto the support shaft 6, and the upper end portion of which is fitted into the annular groove 2 of the buffer body 3. The outer cylinder 7 and the upper lid 8 fitted on the upper end of the through hole 1 of the buffer 3 are provided. In a preferred embodiment of the present invention, the lower end portion of the cushioning body 3 is provided so as to project downward in a stepped manner, and the outer diameter of the small diameter portion 3a thereof matches the inner diameter of the outer cylinder 7. . A further preferred embodiment is
The support shaft fixing annular plate 4 is provided in the small diameter portion 3a. In another preferred embodiment, the outer cylinder fitting annular groove 2 is located on an extension line of the small diameter portion 3a and reaches the intermediate height of the large diameter portion 3b.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view showing a usage state of a door stop according to the present invention, FIG. 2 is an enlarged view of a II portion of FIG. 1, and FIG. 3 is an exploded explanatory view of the door stop. This doorstep is
It has a buffer 3, an annular plate 4, a support shaft 6, an outer cylinder 7, and an upper lid 8. As shown in FIG. 3, the cushioning body 3 has a large diameter portion 3b having a circular outer circumference and a small diameter portion 3a protruding from the lower surface thereof. Then, the through hole 1 is provided in an axial shape, and the seat 10 of the upper lid 8 is formed at the opening end thereof. An annular locking portion 11 is provided at the edge of the seat 10 in a tapered shape as shown in FIG. 2, and by pressing the upper lid 8, the upper edge of the upper lid 8 is fitted into the locking portion 11 and is prevented from coming off. It The upper lid 8 can be easily removed by pushing up with a screwdriver or the like from the bottom side of the door stop. At the root of the outer periphery of the small-diameter portion 3a of the buffer body 3 and the large-diameter portion 3b in the extension line thereof, the annular groove 2 is provided with the large-diameter portion 3
It is formed to an intermediate height of b. An annular plate 4 having an inner circumference smaller than that of the through hole 1 is embedded and fixed to the inner surface of the small diameter portion 3a. That is, the flat washer-shaped annular plate 4 is concentrically embedded and fixed (by insert molding) when the cushioning body 3 made of a rubber material is molded, and the annular plate 4 is integrally joined to the cushioning body 3.

Next, as shown in FIG. 3, the support shaft 6 is formed in the shape of a column with two steps having a gradually decreasing diameter toward the upper end, and the fastener through hole 5 is provided on the axis thereof. The upper end surface of the support shaft 6 is aligned with the lower end surface of the buffer body 3, and the small cylindrical portion 6a of the support shaft 6 is fitted to the inner peripheral surface of the annular plate 4. An outer cylinder 7 having an inner diameter slightly smaller than the outer diameter is inserted into the support shaft 6 by press fitting. The outer cylinder 7 is made of a material having a rust preventive effect such as stainless steel, and its length is longer than that of the support shaft 6. Then, as much as the length thereof, the upper end of the support shaft 6 is protruded as shown in FIG. 1, and the protruding portion is mounted on the small diameter portion 3 a of the buffer body 3 and the annular groove 2. In such a state, the small tubular portion 6a is swaged so as to expand outward in the radial direction from above, and a swaged portion 18 is formed at the upper end edge thereof as shown in FIG. As a result, the support shaft 6 and the shock absorber 3 are fixed in the axial direction by the annular plate 4 so as not to come off.
The groove width of the annular groove 2 is formed to be slightly wider than the plate thickness of the outer cylinder 7, so that the upper end of the outer cylinder 7 can be easily mounted. At the same time, the cushioning effect when the shock is applied to the cushioning body 3 is increased.

[0008]

[How to use] The door stop thus formed is placed on the floor 16 as shown in FIG. At this time, the upper lid 8 is removed, and the shaft portion of the fastener 9 is inserted from the through hole 1 into the fastener through hole 5. When the floor surface 16 is made of wood, the fastener can be wood screws. Further, when the floor surface 16 is concrete, holes can be preliminarily drilled, and the fastener 9 shown in FIG. 1 called a product name tapcon can be screwed and fastened thereto. The fastener 9 may be one that is screwed so as to make a tap in a concrete drilling hole. It consists of a hardened double-threaded screw, one of which is higher than the other and has notches formed at regular intervals at appropriate positions in the spiral of the screw. Next, if further fastening strength between the fastener and the concrete floor surface is required, an anchor nut is embedded in the floor surface 16, a bolt is inserted through the opening of the through hole 1, and the bolt is screwed and fixed to the anchor nut. To do. The head 9b of these fasteners 9 is seated on the upper end surface of the caulking portion 18. Then, attach the upper lid 8 to the seat 10.
The through hole 1 is closed by being pressed into.

[0009]

In the door stop of the present invention, the support shaft 6 is arranged coaxially with the buffer body 3, and the through hole 1 and the fastener through hole 5 are provided in each of them. Then, tighten the fastening screw etc. through hole 1
By inserting the fastener through hole 5 from the opening of the
The door stop on the 16 can be fixed very easily. Then, by fitting the upper lid 8 to the upper end of the through hole 1, a good-looking door stop is obtained. Moreover, the support shaft 6 is caulked and fixed to the buffer body 3 via the annular plate 4, so that the buffer body 3 and the support shaft 6 are firmly integrated. This is because the annular plate 4 is embedded and fixed in the buffer body 3. As a result, the shock applied to the shock absorber 3 is supported by the support shaft 6, and a highly reliable door stop can be provided. Further, it has a simple structure, is easy to manufacture, and can be provided at a low cost. Next, the outer cylinder 7 is the annular groove 2 of the buffer body 3.
The one having the structure to be fitted into the reinforcing member reinforces the coupling force between the buffer body 3 and the support shaft 6, and provides a more reliable door stop. This is because the upper end portion of the outer cylinder 7 is fitted into the annular groove 2 of the shock absorber 3, so that the force applied to the shock absorber 3 is transmitted to the support shaft 6 via the outer cylinder 7. Further, since the outer cylinder 7 can be used by cutting a commercially available pipe having a long rust preventive effect, it is possible to omit the plating of the support shaft 6 and provide a door stop with good rust prevention and good appearance.

Next, in the case where the shock absorber 3 is formed in a stepped manner and the outer cylinder 7 is aligned with the small diameter portion 3a, the support shaft 6 and the shock absorber 3 are further integrated, and the shock absorber 3 is formed. The applied impact force can be transmitted to the support shaft 6 without difficulty. Further, in the case where the annular plate 4 is provided in the buffer body 3, the rubber elasticity of the buffer body 3 can be utilized to the maximum. That is, when the impact force applied to the shock absorber 3 is transmitted to the support shaft 6 via the annular plate 4, a large volume of rubber elastic body exists between the shock absorber 3 and the annular plate 4, so that The impact absorbing power is increased, and the impact force due to the door collision can be smoothly absorbed.
Further, in the case where the annular groove 2 is located on the extension line of the small diameter portion 3a of the buffer body 3 and reaches the intermediate height of the large diameter portion 3b, the outer cylinder 7 is close to the center of the radial direction external force applied to the buffer body 3. Exists, the external force is applied to the support shaft 6 via the outer cylinder 7.
Can be reasonably supported.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a door stop according to the present invention.

FIG. 2 is an enlarged view of a part II in FIG.

FIG. 3 is an exploded explanatory view of a door stop according to the present invention.

FIG. 4 is a vertical sectional view of a conventional door stopper.

[Explanation of symbols]

 1 Through Hole 2 Annular Groove 3 Buffer 3a Small Diameter 3b Large Diameter 4 Annular Plate 5 Fastener Through Hole 6 Support Shaft 6a Small Tube 6b Step 7 Outer Cylinder 8 Top Lid 9 Fastener 9a Shaft 9b Head 10 Seat 11 Locking part 12 Chamfered curved surface 13 Caulking pin with lid 14 Anchor body 15 Ball member 16 Floor surface 17 Bolt hole 18 Caulking part

Claims (6)

(57) [Claims] 1. A buffer body 3 having a rubber elasticity and having a circular cross-section outer periphery with a through hole 1 formed on an axis, and an inner peripheral surface exposed in the through hole 1 and fixed by being embedded in the buffer body 3. The support plate fixing annular plate 4, and the fastener through hole 5 arranged on the axis line, the fastener plate through hole 5 being arranged coaxially with the axis line of the buffer body 3 and having an outer diameter smaller than the outer diameter of the buffer body 3. A support shaft 6 whose upper end is fitted into the inner peripheral surface of the annular plate 4 and is fixed to the annular plate 4 by crimping, and an upper lid 8 which is fitted to the upper end of the through hole 1 of the buffer body 3.
And a door stop equipped with. 2. The fastener 9 according to claim 1, having a shaft portion 9a having an external thread and a head portion 9b larger than the shaft portion 9a, is inserted into the through hole 1 and the fastener through hole 5. A door stop in which its tip is screwed and fastened to the floor, and its head 9b is seated on the upper end of the support shaft 6. 3. A cushioning body 3 having rubber elasticity, which has a circular cross-section outer periphery and has a through hole 1 on its axis, and an outer cylinder fitting annular groove 2 is formed concentrically with the through hole 1 at the lower end surface. The support shaft fixing annular plate 4 whose inner peripheral surface is exposed in the through hole 1 and which is embedded and fixed in the buffer body 3, and the buffer body 3 which is arranged coaxially with the axis line of the buffer body 3. A support shaft 6 having an outer diameter smaller than the outer diameter, a fastener through hole 5 on the axis, and an upper end fitted into the inner peripheral surface of the annular plate 4 and fixed to the annular plate 4 by caulking. An outer cylinder 7 having an upper end protruding and fitted on the support shaft 6 and having an upper end fitted into the annular groove 2 of the shock absorber 3, and an upper end of the through hole 1 of the shock absorber 3. Top cover 8
And a door stop equipped with. 4. The door according to claim 3, wherein the shock absorber 3 has a lower end projecting downwardly in a stepped manner, and the outer diameter of the small diameter portion 3a thereof matches the inner diameter of the outer cylinder 7. Hit. 5. The door stop according to claim 4, wherein the support shaft fixing annular plate 4 is provided in the small diameter portion 3a. 6. The door stop according to claim 4 or 5, wherein the outer tubular fitting annular groove 2 is located on an extension line of the small diameter portion 3a and reaches the intermediate height of the large diameter portion 3b. .