JP2008156941A - Silencer of chain storable fence column - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a silencer of a chain storable fence column capable of providing the sufficient silencing effect by a simple structure, and easily post-installable even on an existing fence column not provided with a silencing countermeasure. <P>SOLUTION: A proper clearance is arranged with an inner peripheral surface of a fence column body 10 inside the fence column body 10, and a synthetic resin chain storage vessel 4 is loosely inserted in an unfixed state. A chain inserting opening part 43 is formed in an upper part of the chain storage vessel 4, and a metallic reinforcing ring 44 is embedded around the opening part 43. A slipping-out preventive tool 5 of a shape of not slipping out of the opening part 43, is installed in an end part of a chain 3 inserted into this chain storage vessel 4, and its surface is covered with a rubber-like elastic body 52. A silencing material 23 is installed in a chain entrance. <P>COPYRIGHT: (C)2008,JPO&INPIT

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 silencer that reduces noise when a chain is inserted and removed.

  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 was a problem.

Therefore, for example, in Patent Documents 1 and 2 and the like, a cylinder made of synthetic resin is attached to the inside of the fence pillar, and the chain is stored in this cylinder, and also around the chain entrance / exit provided on the side surface of the fence pillar. There has been proposed a technique for reducing a contact sound between a fence post and a chain by attaching a silencer made of synthetic resin.
JP 11-310908 A JP 2001-164529 A

  The chain storage type fence post as described above employs a structure in which a cylindrical body made of synthetic resin is fixed inside the fence post, so that it takes time and effort to position the cylinder body and attach a fixing member. And the product cost increases. In addition, it is difficult to properly attach a silencing cylinder to the inside of an existing fence post that has not been subjected to silencing measures.

  Therefore, the present invention provides a chain that can obtain a noise reduction effect equal to or greater than that with a simpler and lower cost structure, and can easily be retrofitted to an existing fence post that is not provided with a noise reduction measure. The present invention provides a silencing device for a retractable fence post.

  In order to achieve the above object, the silencer for a chain storage type fence post according to the present invention allows the chain to be taken into and out of the fence post body through a chain entrance formed in the vicinity of the upper part of the hollow pillar-like fence post body. A silencing device for a chain-contained fence post that is housed in a chain made of a synthetic resin that is loosely inserted in the fence post body with an appropriate clearance from the inner peripheral surface of the fence post body It is characterized by comprising a storage container, a retainer attached to the end of the chain inserted into the chain storage container, and a silencer attached to the chain doorway.

  In the above invention, the retainer has a shape that does not escape from an opening for inserting a chain formed in the upper part of the chain storage container, and the surface thereof is covered with a rubber-like elastic body. And

  Furthermore, in the above invention, a metal reinforcing ring is embedded around a chain insertion opening formed in the upper part of the chain storage container.

  The silencer of the present invention configured as described above is configured such that the chain is brought into and out of the chain storage container made of synthetic resin through the chain inlet / outlet to which the silencer is attached, whereby the contact between the fence pillar main body and the chain is achieved. Sound can be reduced. The chain storage container is loosely inserted inside the fence post body in a non-fixed state, and slightly swings up and down and laterally as the chain is inserted and removed, but the size of the chain storage container is the diameter of the fence post and the thickness of the chain. As long as the chain is not extremely small, there is no particular inconvenience when the chain is put in and out. And since the chain storage container freely swings, the impact transmitted directly to the fence post main body when the chain is put in and out is reduced, and a silencing effect equivalent to or higher than that of the conventional case can be obtained.

  By making the chain storage container non-fixed, the assembly becomes easy and the product cost can be reduced. In addition, even for an existing fence post that has not been muffled, it can be easily silenced by simply inserting a chain storage container into it.

  The rubber-like elastic body that is worn on the chain stopper prevents the contact sound with the chain storage container from being reduced. Further, the reinforcing ring embedded in the opening of the chain storage container prevents the opening from expanding and deforming / damaging when the chain is pulled out.

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

  1 to 2 show a chain storage type fence post 1 according to an embodiment of the present invention. The illustrated fence post body 10 is housed in an outer cylinder 11 embedded in the ground, and is pulled up as necessary and fixed in a standing state. However, in the present invention, the fence post body 10 may be detachable.

  The fence pillar main body 10 is a hollow bottomed cylinder made of stainless steel or the like, and a window hole 12 is formed on an upper side surface thereof. A window fitting 2 having a substantially U-shaped vertical cross section is attached to the inside of the window hole 12, and a chain doorway is configured by the window hole 12 and the window fitting 2. The window metal fitting 2 is welded to the inner surface of the fence post body 10 with the U-shaped open surface facing the window hole 12 and the edges of the upper plate 21 and the bottom plate 22. A substantially circular through hole is formed in the bottom plate 22, and a muffler 23 having a substantially short cylindrical shape is fitted into the through hole. The sound deadening material 23 is a member made of, for example, synthetic resin such as polyurethane or polypropylene, or ABS resin or other engineering plastic that is harder and has excellent wear resistance and lubricity, and a chain insertion that expands upward in the center. A hole 24 is formed.

  The chain 3 is inserted into and removed from the chain insertion hole 24 of the sound deadening material 23 so as not to contact the metal portion of the window fitting 2. A hook ring 31 having a size that does not pass through the chain insertion hole 24 is attached to the end of the chain 3 on the drawer side. The hook ring 31 is moored on the chain insertion hole 24 when the chain 3 is housed in the fence post body 10 and serves as a finger hook when the chain 3 is pulled out. Further, when the chain 3 is pulled out and suspended, it is hooked on an appropriate other-side hook.

  The chain 3 drawn into the fence post body 10 is stored in a chain storage container 4 having a substantially bottomed cylindrical shape. The chain storage container 4 is formed of a synthetic resin having appropriate sound absorption / buffer properties and durability, such as polyurethane, polypropylene, and polyethylene. A cylindrical rising portion 41 having a smaller diameter than the main body portion is formed at the upper part of the chain storage container 4, and an opening 43 for inserting the chain 3 is provided on the upper bottom surface 42. A metal reinforcing ring 44 made of stainless steel or the like is attached to the inside of the cylindrical rising portion 41. The reinforcing ring 44 has a shape that surrounds the opening 43 along the inner peripheral surface and the upper bottom surface 42 of the cylindrical rising portion 41, and is embedded integrally with the cylindrical rising portion 41 when the chain storage container 4 is formed. ing.

  A stopper 5 is attached to the end of the chain 3 that is inserted into the chain storage container 4 on the storage side. The stopper 5 is a member in which a substantially disc-shaped metal piece 51 is fixed to a half ring 32 of a chain ring constituting the chain 3 and the surface thereof is covered with a rubber-like elastic body 52 such as silicon rubber or urethane elastomer. is there. The size including the rubber-like elastic body 52 is formed such that it does not come out of the opening 43 of the chain storage container 4. In order to set the retainer 5 in the chain storage container 4, it is preferable that the chain storage container 4 is formed so that, for example, the bottom part can be removed or the intermediate part can be divided.

  The rubber-like elastic body 52 that covers the retainer 5 is a member for reducing the metallic contact sound between the retainer 5 and the reinforcing ring 44 embedded in the opening 43 of the chain storage container 4. It is. As another alternative to this embodiment, the retainer 5 may not be covered with the rubber-like elastic body 52 or the like, and an appropriate cushioning material made of a rubber-like elastic body or the like may be fitted inside the reinforcing ring 44. . Further, when the stopper 5 is not covered, an appropriate cushioning material may be laid on the inner bottom of the chain storage container 4.

  With such a configuration, the chain 3 is stored in the chain storage container 4 through the chain entrance 2 and the opening 43 of the chain storage container 4 so as to be freely inserted and removed. In the present invention, the chain storage container 4 is not fixed in the fence pillar body 10 with an appropriate gap (specifically, several mm to several tens of mm) from the inner peripheral surface of the fence pillar body 10. It is loosely inserted in the state. The bottom of the chain storage container 4 is naturally supported by riding on a stopper mechanism or the like (not shown) provided near the bottom of the fence post body 10 or the lower part of the fence post body. A gap of about several tens of centimeters to several tens of centimeters is also provided in the vertical direction, that is, between the chain storage container 4 and the window fitting 2.

  Thus, if the chain storage container 4 is not fixed, the chain storage container 4 will swing irregularly as the chain 3 is put in and out, and will rotate somewhat around the axis. When all the chains 3 are pulled out, the chain storage container 4 is also lifted together and comes into contact with the window fitting 2. However, even in such an unfixed state, according to the trial verification by the present inventors, the size of the chain storage container 4 is extremely small compared to the diameter of the fence post body 10 and the thickness of the chain 3. Unless otherwise specified, the chain 3 can be taken in and out without any problem. Since the chain storage container 4 is not in close contact with the fence post body 10, the impact transmitted directly to the fence post body 10 when the chain 3 is put in and out is reduced, and a noise reduction effect equivalent to or higher than that of the conventional case is obtained. Can do.

  Furthermore, since the member for fixing the chain storage container 4 to the fence pillar main body 10 becomes unnecessary, assembly becomes remarkably easier than before and the product cost can be suppressed. In addition, it is possible to easily mute the existing fence pillar that has not been subjected to noise reduction measures by simply inserting the chain storage container 4 into the fence post.

It is a longitudinal cross-sectional view of the chain storage type fence pillar which concerns on embodiment of this invention. It is a fragmentary perspective view which shows the structure of the chain doorway in the said chain storage type | formula fence pillar.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chain storage-type fence pillar 10 Fence pillar main body 23 Silencer material 3 Chain 4 Chain storage container 43 Opening part 44 Reinforcement ring 5 Retaining tool 52 Rubber-like elastic body

Claims (3)

A silencer for a chain storage type fence pillar in which a chain can be freely inserted into and removed from the inside of the fence pillar body through a chain doorway formed in the vicinity of the upper part of the fence pillar body having a hollow cylindrical shape,
A synthetic resin chain storage container that is loosely inserted in an unfixed state with an appropriate clearance from the inner peripheral surface of the fence pillar main body, and an end of the chain inserted into the chain storage container. A silencer for a chain-contained fence post, comprising: a retaining member attached to the section; and a silencer attached to the chain doorway.   2. The retaining device according to claim 1, wherein the retaining member has a shape that does not escape from an opening for inserting a chain formed in an upper portion of the chain storage container, and the surface thereof is covered with a rubber-like elastic body. Silencer for chain storage type fence post.   The silencer for a chain-housing fence post according to claim 1 or 2, wherein a metal reinforcing ring is embedded around an opening for inserting the chain formed in the upper part of the chain-housing container.

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