JP5368191B2 - Silence structure of chain storage type fence pillar - Google Patents

Description

  The present invention relates to a fence column for restricting the passage of vehicles, pedestrians, etc., and in particular, a chain storage type fence column configured so that a chain suspended between the fence columns can be stored in and out of the fence column. The present invention relates to a silencing structure for reducing noise when a chain is taken in and out.

  In many parking lots and public facilities, fence pillars are installed on the ground surface for the purpose of restricting the passage of vehicles and pedestrians. The fence pillar is normally provided so as to be detachable or retractable with respect to the ground, and a chain is bridged between the adjacent fence pillars as necessary.

  In this kind of fence pillar, what is constituted so that the chain can be stored inside the fence pillar so as not to get in the way when the chain is not used is known. However, in such a chain-storing fence post, the metal fence post body and the chain come into contact with the chain when it is put in and out, and an irritating metal sound is generated, which makes the neighborhood uncomfortable. There is a problem.

  Therefore, for example, in Patent Documents 1-3 and the like, a flexible silencing member made of a synthetic resin material is formed in a substantially cylindrical shape and inserted into the inside of the fence post, so that the contact sound between the fence post and the chain is generated. Techniques to reduce it have been proposed. The silencer members disclosed in these documents are cylinders along the inner surface of a fence column made of a plate-like material made of polypropylene, polyethylene, or the like, in which a large number of hollow strips are arranged in parallel to form a substantially corrugated cardboard (so-called plastic cardboard). It is formed by winding in a shape.

Japanese Patent Laid-Open No. 11-336032 JP 2000-45240 A JP 2001-164529 A

  The conventional silencing member made of flexible synthetic resin material is light and excellent in workability and has a high silencing effect, but the material itself is flexible, so it is resistant to repetitive impacts caused by metal chains. As a result, it is somewhat inferior in strength and inconvenient for long-term use.

  Therefore, the present invention is a chain-contained fence column that employs a silencer member that can exhibit higher strength and durability against the impact of a chain while having processability and economy equivalent to or better than those of plastic cardboard. It provides a silencing structure.

In order to achieve the above-described object, the present invention provides a chain storage-type fence post in which a chain can be freely inserted into and removed from a hollow cylinder-shaped fence post main body, and at an appropriate interval on at least one side of a thin metal plate. A muffling member formed with a plurality of protrusions having a chevron shape or a substantially hemispherical shape is wound around in a cylindrical shape so that the protrusion faces outward, and is inserted into the inside of the fence pillar main body. To do.

  That is, the present invention employs a structure in which a metal thin plate formed with a large number of protrusions is used as the sound deadening member, and the sound deadening member is wound into a cylindrical shape and inserted inside the fence post body. When the chain is taken in and out, the vibration is caused by the chain coming into contact with the sound deadening member and absorbing the shock, thereby suppressing the vibration and the rampage of the chain. The contact sound of the chain called “Rakuten” is slightly larger than that when using a resin silencer, but the air layer formed by the protrusions of the metal thin plate reduces the high-pitched contact sound between metals. Since it changes to a dull contact sound, the harshness is greatly relieved. Specifically, the metal thin plate for forming the sound deadening member is preferably made of stainless steel, aluminum alloy or the like and has a thickness of about 0.1 to 0.2 mm.

  The specific shape of the protrusion formed on the metal thin plate is not particularly limited as long as it can form an air layer between the main body of the fence column, but considering the ease of processing, etc., it is generally a mountain shape or a substantially hemisphere. It is practical to project the protrusions in a shape at appropriate intervals. Moreover, in order to secure an air layer between the fence pillar main body, it is preferable to form a protrusion on at least one surface of the metal thin plate and wind the metal thin plate so that the protrusion is on the outside. Of course, protrusions may be formed on both sides of a thin metal plate.

  Further, according to the present invention, the silencing member is wound so that both side edges of the metal thin plate overlap each other with an appropriate width in an unfixed state, and is inserted into the inside of the fence post body, thereby restoring the metal thin plate itself. It is characterized by being mounted along the inner surface of the fence post body by elastic force.

  By adopting such a mounting structure, the metal thin plate can be easily along the inner surface of the fence pillar body, and an air layer can be suitably secured between the fence pillar body. Since there is no need for bonding or welding during the mounting operation, the product assembly operation is simplified. In addition, the muffling member can be easily added to the existing chain storage type fence pillar without requiring a troublesome processing work.

  In the silencing structure of the chain storage type fence pillar of the present invention configured as described above, the silencer member mounted on the inside of the fence pillar body is configured by winding a metal thin plate, so that the collision impact of the chain As a result, the strength and durability that are remarkably superior to those of conventional ones that employ a silencer made of synthetic resin are exhibited.

  A protrusion is formed on the metal thin plate, and this forms an air layer with the fence post body, and the air layer absorbs the impact of the chain. As a result, the contact sound of the chain changes to a dull, low-pitched sound, so that the harshness is relieved. It is done.

  Since both the process of forming the protrusions on the metal thin plate and the operation of winding the metal thin plate and inserting it into the inside of the fence post main body are extremely simple, the present invention is very excellent in economic efficiency.

It is a longitudinal cross-sectional view which shows the internal structure of the chain accommodation type | formula fence pillar which concerns on embodiment of this invention. Similarly, it is a cross-sectional view showing the internal structure of the chain storage type fence post. It is a perspective view of the sound deadening member concerning the embodiment of the present invention. It is a fragmentary perspective view which shows the state which inserts the muffling member of FIG. 3 inside a fence pillar main body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 2 show the internal structure of a chain-housing fence post 1 according to an embodiment of the present invention. In the illustrated chain storage type fence post 1, the fence post main body 10 is stored in an outer cylinder 11 embedded in the ground, and is pulled up as necessary to be fixed in a standing state. However, in this invention, the fence pillar main body 10 is not limited to the raising / lowering retractable type as illustrated, and may be, for example, a removable type or a movable type.

  The fence pillar main body 10 is a hollow cylinder made of stainless steel or the like, and a window hole 12 is formed on an upper side surface thereof. Inside the window hole 12, a window fitting 2 having a substantially U-shaped vertical cross section is welded to the inner surface of the fence post body 10 with its open surface facing the window hole 12 side. A through hole is formed in the bottom of the window metal fitting, and a substantially short cylindrical sound deadening piece 21 is fitted into the through hole. The sound deadening piece 21 is a member made of, for example, a synthetic resin such as polyurethane or polypropylene, or an ABS resin or other engineering plastic that is harder and has excellent wear resistance and lubricity, and the chain 3 is inserted inside the member.

  The chain 3 is put in and out of the fence pillar main body 10 through the window metal fitting 2 in which the sound deadening piece 21 is fitted. A hook ring 31 having a size that does not pass through the muffler piece 21 is attached to the end of the chain 3 on the drawer side. The hook ring 31 is moored on the muffler piece 21 when the chain 3 is stored in the fence post body 10 and serves as a finger hook when the chain 3 is pulled out. When the chain 3 is pulled out and suspended, the hook ring 31 is hooked on an appropriate other-side hook. In the illustrated fence post body 10, a chain hooking / removing hole 13 and a chain hooking metal fitting 4 are provided at positions facing away from the window hole 12 and the window metal fitting 12.

  Further, a stopper 32 having a size that does not pass through the muffler piece 21 is attached to the end of the chain 3 on the storage side. In the present invention, the shape of the retainer 32 is not particularly limited, but the surface is preferably covered with a rubber-like elastic body (not shown) such as silicon rubber or urethane elastomer.

  The chain 3 is stored in a chain storage space provided at an appropriate height in an intermediate portion of the fence post body 10. The main part of the present invention is the muffler member 5 surrounding the chain storage space. As shown in FIG. 3, the muffling member 5 is formed by striking a large number of protrusions 52 at appropriate intervals on one or both surfaces of a thin metal plate 51 made of, for example, stainless steel or aluminum alloy. The shape of the protrusion 52 is not particularly limited, but can be easily stamped out if it is substantially chevron or hemispherical.

  As shown in FIG. 4, the metal thin plate 51 is wound in a cylindrical shape slightly narrower than the inner diameter of the fence post body 10 so that the above-described protrusions 52 protrude outward. The both side edges of the metal thin plate 51 do not need to be fixed to each other, and are held in an overlapping state in an unfixed state with an appropriate width. The sound deadening member 5 is inserted into the inside of the fence post body 10 from the lower end side of the fence post body 10 and pushed into the position of the chain storage space. Then, the cylinder diameter of the muffler member 5 is enlarged by the restoring elastic force of the metal thin plate 51 itself, and is mounted along the inner surface of the fence post body 10. If the muffling member 5 is mounted at a predetermined position on the fence post body 10, the bottom plate 15 is fixed to the lower end position by an appropriate means. It is preferable that an appropriate cushioning material (not shown) made of a synthetic rubber or a synthetic resin material is attached to the surface of the mid-sole plate 15 in advance.

  As shown in FIG. 2, the portion where the metal thin plate 51 and the metal thin plate 51 overlap each other between the metal thin plate 51 and the inner peripheral surface of the fence post main body 10 in the state where the silencer member 5 is inserted inside the fence column main body 10. In this case, an air layer corresponding to the height of the protrusion 52 is formed. This air layer absorbs the impact caused by the contact of the chain 3 and softens the contact sound of the chain 3. Considering the silencing effect, it is desirable that the thickness of the metal thin plate 51 is about 0.1 to 0.2 mm, and the height of the protrusion 52 is at least 0.5 or more, preferably about several mm. Although the arrangement | sequence form of the protrusion 52 will not be specifically limited if it is a substantially uniform distribution, When the internal diameter of the fence pillar main body 10 is about several cm-10 cm, it is preferable to make arrangement | positioning space | interval into several cm. However, since it is better that the metal thin plate 51 is not in close contact with the inner surface of the fence post body 10, at least the circumferential arrangement interval should be as small as possible.

  As described above, the present invention employs a very simple configuration in which the muffler member 5 formed by forming the protrusion 52 on the metal thin plate 51 and winding it into a cylindrical shape is inserted inside the fence post body 10. Therefore, complicated parts processing or the like is unnecessary, and can be easily mounted on the fence post body 10. Since the internal structure and cross-sectional shape of the fence pillar main body 10 are not particularly limited in mounting, the silencer member 10 can be easily retrofitted to an existing fence pillar that has not been subjected to noise reduction measures. The sound deadening member 5 made of the metal thin plate 51 exhibits significantly superior strength and durability as compared with the sound deadening member 5 made of synthetic resin, and is practically used by the air layer formed by the protrusion 52 of the metal thin plate 51. There is also a sufficient silencing effect. In this way, the silence of the chain-housing fence post 1 can be achieved with a simple and inexpensive configuration.

DESCRIPTION OF SYMBOLS 1 Chain storing type fence pillar 10 Fence pillar main body 3 Chain 5 Silencer member 51 Metal thin plate 52 Projection

Claims (3)

In the chain storage type fence pillar in which the chain can be freely put in and out of the inside of the fence pillar body forming a hollow cylinder,
A silencing member formed by forming a plurality of protrusions having a substantially chevron shape or a substantially hemispherical shape on at least one surface of a metal thin plate at an appropriate interval is wound in a cylindrical shape so that the protrusion faces outward. A silencing structure for a chain-retaining fence column, which is inserted inside the column body. In the silencing structure of the chain storage type fence pillar according to claim 1,
The silencing member is made of a non-porous metal thin plate, and has a silencing structure for a chain storage type fence post. In the silencing structure of the chain storage type fence pillar according to claim 1 or 2,
The sound deadening member is wound so that both side edges of the metal thin plate overlap with each other in an unfixed state with an appropriate width, inserted into the inside of the fence pillar main body, and the restoration pillar's main body by the restoring elastic force of the metal thin plate itself A silencing structure for a chain-retaining fence post, which is mounted along the inner surface of the chain.

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