Lower vibration prevention device for hanging doors

Abstract

To provide a lower vibration prevention device for a hanging door, which can set the outer diameter of an outer member including a guide pin member small while enjoying the advantage that the position of a guide pin member of a lifting body relative to the hanging door can be adjusted. [Solution] The device comprises an outer member 1 placed on the floor, a case 3 attached to the outer member 1, and a nested lifting body 4 provided in the case 3, and is equipped with a guide pin member 2 that eccentrically positions the lifting body 4 on the case 3. The upper end surface of the outer member 1 and the underside of a flange portion 30 formed on the case 3 are fitted together to form uneven portions 11, 31 that prevent relative rotation.

Description

[Technical Field]

[0001] The present invention relates to a lower vibration prevention device for a hanging door. [Background technology]

[0002] Conventionally, a lower vibration-stopping member for a hanging door has been known that guides a hanging door that is suspended from a ceiling rail via a runner so that it can move freely, by using magnetic force to cause the lifting body of a guide pin member installed on the floor surface to protrude from a case and insert it into a groove formed on the underside of the hanging door body (see, for example, Patent Documents 1 and 2).

[0003] In these lower vibration prevention devices for hanging doors, the lifting body of the nested structure of the guide pin member is eccentrically mounted in the case, and the case is rotated in a predetermined direction and attached to an outer member installed on the floor, allowing the position of the lifting body of the guide pin member relative to the hanging door to be adjusted, and the case of the guide pin member is attached by fitting with the outer member at an outer peripheral position or a lower position so that it does not rotate when attached to the outer member.

[0004] However, in these lower vibration stop devices for hanging doors, it is difficult to set the outer diameter of the outer member including the guide pin member small in order to obtain a fitting force that prevents the outer member and the case of the guide pin member from rotating relative to each other, which creates the problem that a large hole needs to be drilled in the floor to install the lower vibration stop for the hanging door. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-2770 [Patent Document 2] Japanese Patent Application Publication No. 2018-21305 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the problems associated with the above-mentioned conventional lower vibration control devices for hanging doors, the present invention aims to provide a lower vibration control device for hanging doors that has the advantage of being able to adjust the position of the guide pin member of the lifting body relative to the hanging door, which is a feature of the lower vibration control devices for hanging doors disclosed in Patent Documents 1 and 2, while allowing the outer diameter of the outer member including the guide pin member to be set small. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the lower vibration-stopping device for a hanging door of the present invention comprises an outer member installed on the floor, a case attached to the outer member, and a nested lifting body provided in the case, with a guide pin member provided eccentrically to the case, and the lifting body of the guide pin member is protruded from the case and inserted into a groove formed on the underside of the hanging door body to guide the hanging door, and is characterized in that a concave-convex portion is formed on the upper end surface of the outer member and the underside of the flange formed on the case to prevent relative rotation by fitting together.

[0008] In this case, a case lift-up prevention member attached to the outer member can be fastened to the lower end surface of the case of the guide pin member with a screw.

[0009] Further, the guide pin member is provided with a cylindrical member along the entire length of the lifting body, which is the upper end side when the guide pin member is projected. A magnet having a shape can be provided. [Effects of the Invention]

[0010] According to the hanging door lower vibration stop device of the present invention, the upper end surface of the outer member and the underside of the flange formed on the case are fitted together to form a concave-convex portion that prevents relative rotation. This allows for a fitting force to be obtained on the outer periphery of the case between the outer member and the guide pin member that prevents relative rotation. This allows for the outer diameter of the outer member including the guide pin member to be set small while still enjoying the advantage of being able to adjust the position of the guide pin member relative to the hanging door. This allows for the hole to be drilled in the floor to be small, preventing the design of the floor surface from being impaired. [Brief explanation of the drawings]

[0011] [Figure 1] 1A, 1B, and 1C show an embodiment of a lower vibration-proof device for a hanging door according to the present invention, in which (a) is a front view, (b) is a bottom view, and (c) is a side view. [Figure 2] 1A, 1B, 1C, 1D, and 1E show the outer member of the lower vibration-proof device of the hanging door, in which FIG. 1A is a plan view, FIG. 1B is a front view, FIG. 1C is a bottom view, and FIG. 1D is a vertical cross-sectional view. [Figure 3] 10A and 10B show the guide pin member of the lower vibration-stopping device of the same hanging door, in which (a) shows the state in which the lifting body is stored in the case, and (a) shows the state in which the lifting body protrudes from the case. [Figure 4] The case of the guide pin member of the lower vibration-stopping device of the same hanging door is shown, where (a) is a plan view, (b) is a front view, (c) is a bottom view, (d) is a left side view, and (e) is a right side view. [Figure 5] 10A and 10B show a first lifting body of a guide pin member of the lower vibration-proof device of the hanging door, where FIG. 10A is a plan view and FIG. 10B is a plan view of a washer. [Figure 6] 10A and 10B show a second lifting body of a guide pin member of the lower vibration-proof device of the hanging door, where FIG. 10A is a plan view and FIG. [Figure 7] 10A, 10B, and 10C show a lift-up prevention member used in a guide pin member of the lower vibration prevention device of the same hanging door, where FIG. 10A is a front view, FIG. 10B is a plan view, and FIG. [Figure 8]1 shows modified embodiments of the lower vibration-stopping device for a hanging door of the present invention, where (a) is a front view of the guide pin member of the first modified embodiment, (b1) is a front view of the guide pin member of the second modified embodiment, (b2) is a bottom view of the same, (c1) is a plan view of the outer member of the second modified embodiment, and (c2) is a front view of the same. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of a lower vibration prevention device for a hanging door of the present invention will be described with reference to the drawings.

[0013] 1 to 7 show an embodiment of a lower vibration prevention device for a hanging door according to the present invention. This lower vibration prevention device for a hanging door consists of an outer member 1 installed on the floor, a case 3 attached to the outer member 1, and a nested lifting body 4 provided in the case 3. It is equipped with a guide pin member 2 that mounts the lifting body 4 eccentrically to the case 3, and the lifting body 4 of the guide pin member 2 is protruded from the case 3 and inserted into a groove (not shown) formed on the underside of the hanging door body to guide the hanging door. The upper end surface of the outer member 1 and the underside of the flange portion 30 formed on the case 3 are fitted together to form uneven portions 11 and 31 that prevent relative rotation.

[0014] The outer member 1 is a cylindrical member made of metal such as a hard synthetic resin, zinc alloy, or aluminum alloy such as hydronalium, and has a flange 10 at the upper end that engages with the surface of the floor when the outer member 1 is placed in a hole formed in the floor, and a number of protrusions 12 on the outer periphery that act to prevent it from coming loose when placed in a hole formed in the floor. The inner circumferential side of the upper surface of the flange portion 10 is slightly recessed, and the uneven portion 11 is formed on the surface (upper end surface).

[0015] The guide pin member 2 comprises a case 3 attached to the outer member 1 and a telescopic lifting body 4 provided in the case 3, with the lifting body 4 provided eccentrically to the case 3.

[0016] The case 3 is made of a cylindrical member made of metal such as a hard synthetic resin, zinc alloy, or aluminum alloy such as hydronalium, and has a flange 30 at its upper end that is large enough to cover the surface of the flange 10 of the outer member 1, and two guide grooves 32 with closed upper ends that guide the elevation of the elevation body 4 (second elevation body 4B) on its inner surface. The lower surface of the flange 30 is formed with a concave-convex portion 31 that fits with the concave-convex portion 11 of the outer member 1 to prevent relative rotation.

[0017] The lifting body 4 is made up of a first lifting body 4A disposed on the central side and which becomes the upper end side when the guide pin member protrudes, and a second lifting body 4B disposed on the outer periphery thereof.

[0018] The first lifting body 4A can be composed of a molded product 41 made of a non-magnetic material such as a metal such as austenitic stainless steel, brass, magnesium alloy, aluminum alloy such as hydronalium, zinc alloy, or synthetic resin (including composite materials) such as engineering plastic such as polyamide (PA), polyacetal (POM), polycarbonate (PC), etc., and a magnet 42. Specifically, the molded product 41 constituting the first lifting body 4A can be a molded product 41 having a T-shaped cross section, and a magnet 42 can be fitted into the shaft portion of this T-shaped molded product 41. Here, the lower part of the magnet 42 fitted into the shaft part of the T-shaped molded product 41 is supported and fixed by a washer 43. The washer 43 has two protrusions 43a formed thereon, so that it also serves as a guide member when the first lifting body 4A moves up and down within the second lifting body 4B. This simplifies the structure of the first lift body 4A in which the magnet 42 is arranged, and reduces the manufacturing cost. Furthermore, by constructing the molded product 41 from a non-magnetic material, the magnetic force of the magnet 42 is not blocked by the molded product 41, and by using a magnet 42 that can generate a long, powerful magnetic force that is long enough to be arranged along almost the entire length of the first lifting body 4A, the first lifting body 4A can be reliably attracted by a magnet or magnetic material arranged in a groove formed on the underside of the hanging door main body, and as a result, for example, the member to which the first lifting body 4A is attracted can be made up of only a magnetic material.

[0019] The second lifting body 4B can be made of a molded part 44 made of a non-magnetic material, similar to the first lifting body 4A. Specifically, the molded product 44 constituting the second lifting body 4B is a cylindrical molded product 44 made by die-casting, and has two protrusions 44a at the lower end of its outer peripheral surface that fit into the guide groove 32 of the case 3, and two protrusions 43a of the washer 43 that fit into its inner peripheral surface to form two guide grooves 44b with closed upper ends that guide the lifting and lowering of the first lifting body 4A.

[0020] The guide pin member 2 incorporates a first lifting body 4A and a second lifting body 4B that form a nested lifting body 4 in the case 3, and a lifting prevention member 5 that prevents the case 3 attached to the outer member 1 from lifting up is engaged with the lower end surface of a step portion 33 formed in the case 3 using a screw 6. The lift-up prevention member 5 is made of synthetic resin such as engineering plastics, such as polyamide (PA), polyacetal (POM), polycarbonate (PC), etc., and a protrusion 52 provided at the tip of a C-shaped arm portion 51 toward the outer periphery abuts against the underside of the outer member 1, thereby preventing the case 3 attached to the outer member 1 from lifting up, and a protrusion 53 provided at the middle portion toward the inner periphery abuts against the underside of the second lift-up body 4B, thereby preventing the case 3 from lifting up. By supporting the body 4B, the first lifting body 4A and the second lifting body 4B that constitute the lifting body 4 incorporated in the case 3 are prevented from falling out of the case 3 downward.

[0021] According to this hanging door lower vibration stopper device, uneven portions 11, 31 are formed on the upper end surface of the outer member 1 and the underside of the flange 30 formed on the case 3 to prevent relative rotation by fitting together, and a fitting force that prevents relative rotation between the outer member 1 and the guide pin member 2 can be obtained on the outer periphery of the case 3 of the outer member 1 and the guide pin member 2. This allows the outer diameter of the outer member 1 including the guide pin member 2 to be set small, for example to about 20 mm, while still enjoying the advantage of being able to adjust the position of the lifting body 4 of the guide pin member 2 relative to the hanging door. This allows the hole drilled in the floor to be small to install the hanging door lower vibration stopper to be made smaller, without compromising the floor design.

[0022] Incidentally, this lower vibration stopper for hanging doors is intended for grooves formed on the underside of the hanging door body that are open at the bottom. However, in the case of a rail shape with a flange, such as that described in Patent Document 2, as in the modified embodiment of the lower vibration stopper for hanging doors of the present invention shown in Figure 8, it is possible to form a narrow neck portion (narrow diameter portion) 45 on the first lifting body 4A by making the diameter of the head of the T-shaped cross-section molded part 41 that constitutes the first lifting body 4A larger than the diameter of the magnet 42 that is fitted into the shaft portion of the molded part 41, and this is not excluded. Here, the uneven portions 11, 31 formed on the upper end surface of the outer member 1 and the lower surface of the flange portion 30 formed on the case 3, which fit together to prevent relative rotation, can have a sawtooth cross section or any other shape, such as a hemispherical uneven shape as shown in Figures 8(b1) to (c2). The other configurations of the lower anti-vibration member for the hanging door of this modified embodiment are the same as those of the lower anti-vibration member for the hanging door of the above embodiment.

[0023] The above describes the lower vibration-stopping device for hanging doors of the present invention based on its embodiments, but the present invention is not limited to the configuration described in the above embodiments, and the configuration can be changed as appropriate within the scope of its intent. [Industrial Applicability]

[0024] The lower vibration prevention device for a hanging door of the present invention has the advantage of being able to adjust the position of the guide pin member of the lifting body relative to the hanging door, while also having the characteristic of being able to set the outer diameter of the outer member including the guide pin member to a small size, making it suitable for use as a lower vibration prevention device for a hanging door. [Explanation of symbols]

[0025] 1 Outer member 10. Tsuba 11 Uneven part 12 protrusions 2 Guide pin member 3 Cases 30 Tsuba 31 Uneven part 32 Guide groove 33 Stepped section 4. Lifting body 4A First lifting body 4B Second lift 41 Molded products 42 Magnet 43 Washer 43a Protrusion 44 Molded products 44a Protrusion 44b Guide groove 45 Narrow neck (narrow diameter) 5 Anti-floating material 51 Arm 52 Protrusion 53 Protrusion 6 bis

Claims

1. A lower vibration-stopping member for a hanging door, which consists of an outer member that is placed on the floor, a case that is attached to the outer member, and a nested lifting body that is provided in the case, with a guide pin member that installs the lifting body eccentrically on the case, and which guides the hanging door by having the lifting body of the guide pin member protrude from the case and insert it into a groove formed on the underside of the hanging door body, is characterized in that a concave-convex portion is formed on the upper end surface of the outer member and the underside of the flange formed on the case that engage with each other to prevent relative rotation.

2. 2. The lower vibration-stopping member for a hanging door according to claim 1, wherein a case lift-up prevention member attached to the outer member is engaged with the lower end surface of the case of the guide pin member by a screw.

3. 3. The lower vibration-stopping member for a hanging door according to claim 1, wherein a cylindrical magnet is disposed over the entire length of the lifting body that is the upper end side when the guide pin member is projected.

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