JPH04219Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention involves fitting and attaching a horizontal shock absorber to the upper end of an upright support shaft fixed to the floor, and tightening the shock absorber onto the support shaft with a right-handed threaded lever. Regarding the inverted L-shaped door stop that is fixed, in particular, by not using any metal fittings to fix the shock absorber to the support shaft, and tightening only with the right-hand threaded rod as the core of the shock absorber, it can withstand the impact force of opening the door. The present invention relates to a door stop that is durable for a long period of time and that prevents the direction of the axis of the buffer body from shifting.

(Prior Art) A floor-mounted door stop is used to prevent an open door from hitting a wall with a strong impact force and damaging the other side. The doorstop that absorbs this impact force must be fixed to prevent the floor-mounted support shaft from rotating inadvertently, and also to prevent the shock absorber attached to the upper end of the support shaft from slipping out and falling off, or from being perpendicular to the surface of the open door. The structure should be such that it will not be displaced in any direction.

As this kind of doorstop, conventional
The technique disclosed in the publication No. 1 has been proposed. This door stop has a structure that allows it to be used both as a door stop with a floor and as a baseboard door stop. That is, a metal tubular head is provided in order to attach a cushioning material (buffer) to the support column. The upper part of the strut section is a cylindrical mounting section with a reduced diameter, and the metal head has strut mounting holes provided on the rear end surface and the circumferential surface, and both mounting holes are each provided with a stepped portion. For example, if you fit the cylindrical mounting part of the support into the mounting hole on the peripheral surface like a door with a floor, and screw the set screw into the screw hole of the cylindrical mounting part, the back of the head of the set screw will be The cushion material is engaged with and tightened by the stepped portion of the mounting hole on the rear end surface, and the cushion material is fixed to the support column via the head portion.

(Problem to be solved by the invention) However, in the above-mentioned prior art, a cylindrical attachment part is fitted into a stepped part of a hole provided on the circumferential side of a tubular head, and the upper and lower ends of the attachment part are slightly separated. Even if this part is engaged with the head, it is merely held in the inserted position. Furthermore, in order to tighten this insertion position with a set screw, the set screw screwed into the mounting part only tightens and fixes the head to the support part due to the frictional force of contact between a small part of the periphery of the back of the head and the stepped part. When subjected to the repeated and strong impact forces of the door, the set screw is rapidly untwisted and loosens, resulting in the tubular head being pulled out of the post attachment. Even if this is not the case, the head with the cushion will be rotated and displaced from the cylindrical mounting part due to the strong impact force, and the cushion part will not be able to come into contact with the opening door surface, and the impact will be prevented. become unable to absorb. Furthermore,
Even if the cushion material is fitted and held in the tubular head by the step part of the head or the C-shaped hook, the cushion material is torn by the metal wire of the hook due to the strong impact force of the door, and the proximal end There is a problem in that they are buried in the stepped portion and are destroyed.

In the door stop of the present invention, no reinforcing hardware is provided between the support shaft and the shock absorber, and the entire head is made of an elastic shock absorber such as rubber. The upper end of the support shaft is directly inserted into the provided insertion hole, and the right-handed threaded rod serving as the core material of the buffer is screwed into the buffer and support shaft from the rear end of the buffer and tightened and fixed. Even if the opening door applies repeated impact force, the head of the screw rod will not be screwed in as it engages with the support shaft, and the buffer placed perpendicular to the opening door surface will be displaced or damaged. Therefore, the purpose is to obtain a door stop that can withstand long-term use.

(Means for Solving the Problems) In order to achieve the above object, the door stop of the present invention has an anchor bolt erected from the floor, and the support shaft screwed onto the anchor bolt has a female threaded hole along the axis from the lower end. A tightening nut is screwed onto the outer periphery of the lower end. A screw hole is bored through the upper end of the support shaft in the diametrical direction. The shock absorber, which has a circular cross section and is attached horizontally to the support shaft, is made entirely of rubber or synthetic rubber, and has an insertion hole for fitting the support shaft from the circumferential surface of one end. Drill screw holes along the front end surface at intervals that do not affect the impact force. Then, the shock absorber is inserted into the upper end of the support shaft through the insertion hole, and a right-handed threaded rod is screwed from the rear end surface of the shock absorber into the screw hole of the support shaft and the screw hole of the shock absorber, and the shock absorber is attached to the support shaft. The structure is such that it can be tightened and fixed.

(Function) The support shaft is threaded onto the anchor bolt, and the lower end of the support shaft is tightened to the floor or a mounting seat plate fixed to the floor. At this time, if the axis of the shock absorber happens to be arranged in a direction perpendicular to the surface of the opening door, the support shaft will not be inadvertently rotated even by the impact of opening the door. However, such an arrangement is extremely rare, and usually the opening door is not perpendicular to the opening door, but is angularly displaced. Therefore, by rotating the support shaft back, the shock absorber is aligned in a direction perpendicular to the door surface. Then, rotate the nut screwed onto the support shaft to firmly tighten it to the floor or mounting seat plate. This is because the entire lower end of the nut comes into pressure contact with the floor or seat plate, generating a strong frictional force, which prevents the spindle from rotating even when the strong impact force of the door is applied to the shock absorber. do not have.
Therefore, the tightening nut can steplessly adjust the axial direction of the shock absorber and firmly tighten and fix the support shaft to the floor surface with an extremely simple operation.

After aligning the screw hole of the shock absorber with the screw hole of the support shaft, screw the right-handed screw rod into the rear end of the shock absorber, fix its head to the support shaft, and tighten and fix the shock absorber. When the door collides with the front end surface of the buffer, the buffer is compressed and expands in the radial direction, and the compressed portion moves slightly toward the rear end. This compressive movement force is generated by a torque that presses the threaded surface of the screwed right-handed threaded rod having a lead angle and rotates the right-handed threaded rod so that the right-handed threaded rod is screwed in. However, if the head of the right-handed threaded rod that is screwed into the shock absorber is engaged with the circumferential surface of the support shaft, the rod will not be screwed in further and rotate. In this way, the right-handed threaded rod continues to firmly hold the shock absorber made of an elastic material such as rubber on the support shaft, so that the shock absorber does not fall off. Furthermore, the right-hand threaded rod acts as a core material for the shock absorber, reinforcing the entire shock absorber. Since the threaded rod is screwed into the support shaft, the axial direction of the shock absorber cannot rotate or displace from the position perpendicular to the open door surface unless the support shaft is rotated or displaced. do not have.

(Example) Examples will be described with reference to the drawings.

Reference numeral 1 in FIG. 1 is a door stop having a substantially inverted L shape. As shown in Fig. 2, the door stop 1 is usually constructed by standing an anchor bolt 3 on the concrete floor in advance.
A door stop is attached to this anchor bolt 3 with or without a mounting seat plate 4. The mounting seat plate 4 has a through hole for inserting a spindle in the center of a disc, a step is formed around the hole by press working, and the peripheral edge is fixed to the floor surface with screws. This mounting seat plate 4 is designed to prevent damage to the floor surface by attaching it directly to the floor surface at the doorstop, but the other reason is that instead of the anchor bolt 3, a flat head at the bottom end of the bolt was used. The bolt is disposed in a stepped space, and the bolt is fixed by strongly clamping the seat plate 4 between the flat head of the bolt and a tightening nut 7, which will be described later.

The support shaft 5 attached to the anchor bolt 3 is formed into a cylindrical shape by plating metal such as iron or brass with chromium.
The support shaft 5 has a female threaded hole 6 for screwing in an anchor bolt formed along the axis from the lower end surface. Further, a tightening nut 7 is threaded onto a male thread provided on the outer periphery of the lower end of the support shaft, and this male thread portion may be formed into a small diameter support shaft portion in order to prevent the nut from becoming bulky. When the nut 7 is screwed onto the male screw of the support shaft, the lower end of the support shaft projects slightly downward from the lower surface of the nut. A threaded hole 9 into which a right-handed threaded rod 14 is screwed is formed through the upper end of the support shaft 5 in the diametrical direction.

Incidentally, when the support shaft is screwed onto the anchor bolt, a decorative seat plate 8 having a center through hole is interposed on the support shaft.

The shock absorber 10 attached to the support shaft 5 is entirely made of rubber or synthetic rubber and is formed into a circular shape with a diameter larger than the diameter of the support shaft 5. Furthermore, a screw hole 9 into which a right-handed threaded rod 14 is screwed is bored from the rear end surface of the buffer body 10 along the axis. The end position of the right-hand threaded rod 14 is set to a length that is not affected by impact force from the end contact surface where the door surface abuts. The screw hole in the buffer body has a diameter slightly smaller than the diameter of the screw thread on the right-hand threaded rod. Then, screw the right-hand threaded rod into this hole while tapping. Furthermore, the diameter of this hole is not limited to the above-mentioned diameter, but may be the diameter of the thread of the right-handed threaded rod, or may be formed with a female thread that matches the right-handed threaded rod. A fitting hole 11 into which the support shaft 5 is press-fitted is bored in the rear end side circumferential surface of the buffer body 10 in the radial direction. Then, after fitting the upper end of the support shaft into the insertion hole 11 of the shock absorber and aligning the screw hole 9 with the screw hole of the shock absorber, the right-hand threaded rod 14 is screwed in to tighten the shock absorber 10 to the support shaft 5. Attach and fix. Small holes are provided in the upper circumferential surface of the support shaft 5 at opposing positions, and both ends of a hanging ring 15 made of metal wire are elastically fitted and pivoted into both of the small holes.
As shown by the dashed line in FIG. 2, the hanging ring 15 is pivoted about the small hole and is hooked onto the protrusion 18 of the pusher fitting 17 provided on the door 16, thereby preventing the door 16 from being closed inadvertently. This is to prevent

(Effects) Since the present invention is configured as described above, it produces the effects described below.

After tightening the lower end of the support shaft screwed onto the anchor bolt to the floor or mounting seat plate, unscrew it so that the axis of the shock absorber is perpendicular to the opening/closing door surface, and then tighten the support shaft. Tighten the nut on the floor with the nut at the lower end. As a result, the entire lower end of the nut strongly presses against the floor or the mounting seat plate, generating a strong frictional force, so that the support shaft absorbs the impact force of the door. It will not rotate carelessly.

If a shock absorber made entirely of rubber is fitted onto the upper end of the support shaft, and the right-hand threaded rod is screwed into the shock absorber along with the support shaft from the rear end of the shock absorber, and the head is engaged and fixed to the support shaft, the shock absorber will be created. Even when the body is subjected to the strong opening impact force of the door, it does not rotate further or become screwed in, and both the support shaft and the shock absorber can withstand long-term use.

Since the door stop of the present invention has a simple structure in which the shock absorber is simply tightened and fixed to the support shaft with a right-handed threaded rod, it has the advantageous effect of extremely low manufacturing costs.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of the floor-mounted door stop.
FIG. 2 is a side view of the entire door stop shown in FIG. 1, with a portion cut away. 1... Door stop, 2... Floor, 3... Anchor bolt, 4... Mounting seat plate, 5... Support shaft, 6... Screw hole, 10... Buffer, 12... Screw hole, 13 ……
Head of right-hand threaded rod, 14... Right-hand threaded rod, 15... Hanging ring.

Claims (1)

[Scope of utility model registration request] The support shaft that is screwed onto the anchor bolt and erected has a screw hole drilled along the axis from the lower end, a tightening nut screwed around the outer periphery of the lower end, and a screw provided in the diametrical direction at the upper end of the support shaft. In a doorstop in which a shock absorber is mounted horizontally by a threaded rod through a hole, the shock absorber is entirely made of rubber material, and the cross section perpendicular to the horizontal axis is circular with a diameter larger than the diameter of the support shaft. A fitting hole for fitting the support shaft is drilled radially from the rear peripheral surface of the shock absorber, and a screw hole is drilled from the rear end surface of the shock absorber along the axis from the tip surface to a desired distance position. A doorstop is provided with a right-hand threaded rod that is screwed into a screw hole of the buffer body and a screw hole at the upper end of the support shaft from the rear end of the buffer body to fix the head to the support shaft.