JP6371487B1 - Soundproof cover for hammer and soundproof hammer - Google Patents

Abstract

To provide a soundproof cover for a hammer that can be easily attached and detached and has sufficient sound absorption performance.
SOLUTION: A hammer soundproof cover 1 that can be attached to and detached from a double-ended hammer 15 and is attached to both striking heads 16 of the double-ended hammer, and a cap 3 made of a soft material and the caps 3 are joined together. The hammer soundproof cover includes the elastic coupling portions 8, 9, 10, the sound absorbing material 2 accommodated in the cap 3, and the metal plate 7 accommodated in the cap 3.
[Selection] Figure 1

Description

  The present invention relates to a hammer cover and a hammer that are used particularly in a construction site and the like and reduce noise caused by hammering.

  At construction sites, for example, there has been a problem that noise caused by hammering occurs when assembling a scaffolding with metal pipes, causing stress to neighboring residents. Therefore, conventionally, methods for reducing the hammering sound have been studied.

  In Patent Document 1, a hammering head of a hand hammer or an electric hammer is covered with a coating portion made of a vibration-damping resin material which is an elastomer or rubber having a low impact resilience value, and the outside of the coating portion is made of metal, plastic or rubber. A hammer and a removable cap covered by a protective body consisting of Patent Document 2 discloses a shockless hammer in which a hammering member made of special viscoelastic rubber is attached to a main body portion of the hammer. Patent Document 3 discloses a hammer silencing cap in which a hammer hitting portion has a receiving portion made of a rubber-like elastic material, and a metal plate having a small hole is embedded in the receiving portion.

Japanese Patent Laid-Open No. 2002-200578 Japanese Utility Model Publication No. 61-109686 Japanese Utility Model Publication No. 50-136865

  However, in the hammers and hammer caps of Patent Literature 1 and Patent Literature 2, since the sound absorbing material or the coating material is engaged with the hammer head by unevenness or screws, a hammer having an engaging portion for attaching the cap is provided. New preparations are needed and cannot be retrofitted to a hammer that has been used for many years. Further, since only the rubber or elastomer is used as the sound absorbing material, the sound absorbing performance is insufficient. In the hammer cap disclosed in Patent Document 3, although the attachment method is not specified, it is difficult to attach and detach if it is firmly fixed, and the sound absorbing performance is insufficient.

  Therefore, an object of the present invention is to provide a soundproof cover for a hammer and a soundproof hammer that can be retrofitted to a familiar hammer and can be easily attached and detached.

  The present invention provides a soundproof cover for a hammer that can be attached to and detached from a double-ended hammer, wherein a cap made of a soft material, which is attached to both striking heads of the double-ended hammer, and the caps are coupled to each other to provide elasticity. A hammer soundproof cover including a coupling portion having a sound absorbing material housed in the cap.

  According to this, since the soundproof cover can be easily attached and detached, it can be attached to a familiar hammer and can be easily replaced even if the cover is deteriorated after use. Since the coupling portion has elasticity, the caps attached to both the striking heads are securely coupled to each other, and can withstand the tension from both even during work, and does not come off or shift. Moreover, the noise at the time of driving | operation is reduced by including a sound-absorbing material. Because the cap is made of a soft material, there is no risk of injury when the cap is struck by hitting a hard object. The soft material is selected from rubber, vinyl chloride, elastomer and the like.

  It is preferable that the soundproof cover for hammers includes a metal plate inside the cap and closer to the impact side than the sound absorbing material.

  According to this, it becomes easy to feel the touch of the worker hitting a hard object while maintaining the sound absorption performance.

  The sound absorbing material preferably includes a gel mat made of a gel-like resin. Further, it is preferable that the sound absorbing material further includes a multi-layered corrugated cardboard layer, and the corrugated cardboard layer is disposed closer to the hammer side than the gel mat.

  According to this, high sound absorption performance can be obtained.

  It is preferable that the sound absorbing material and the metal plate are collected by a rubber tube.

  According to this, attachment becomes easy.

  It is preferable that a protective member is bonded to the striking side of the cap.

  According to this, even if the cap is made of a thin material, it cannot be broken by hitting a horned object.

  Moreover, this invention is a hammer with which the said soundproof cover for hammers was mounted | worn.

  The soundproof cover for a hammer according to the present invention is easy to attach and detach while being firmly fixed to the hammer, and can be easily attached to a handheld hammer. Further, while maintaining the hit feeling and hitting force, the soundproofing performance is high, and noise can be reduced at construction sites.

It is a center sectional view of the hammer which equipped the soundproof cover for hammers of this embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The hammer soundproof cover 1 according to this embodiment is a hammer soundproof cover that can be removed from the double-ended hammer 15, and is composed of two caps made of a soft material that are attached to both striking heads 16 of the double-ended hammer 15. 3, the caps 3 are coupled to each other, and the coupling parts 8, 9, 10 having elasticity, the sound absorbing material 2 accommodated in the cap 3, and the impact side of the sound absorbing material 2 accommodated in the cap 3 The metal plate 7 arrange | positioned in is included.

  The cap 3 has a bottomed cylindrical shape including a side wall portion 31 and a head wall portion 32, and both the side wall portion 31 and the head wall portion 32 are formed of a soft material such as rubber, elastomer, or vinyl chloride resin. The thickness of the side wall portion 31 is preferably 1.5 mm to 2 mm so that it can be easily attached to and detached from the hammer. On the other hand, since the head wall part 32 becomes a striking part and requires strength, its thickness is larger than the thickness of the side wall part 31 and is preferably 4 mm to 5 mm. Since the head wall portion 32 is made of a soft material, even if a hard object is struck, there is no risk that the cap will break and the operator will be injured.

  A felt protective member 4 is bonded to the striking side surface of the head wall portion 32 of the cap 3. Thereby, even if a cornered object is hit, it can prevent that the head wall part 32 of the cap 3 shakes.

  The sound absorbing material 2 is composed of a soft resin mat 5 and a corrugated cardboard 6. As shown in FIG. 1, the soft resin mat 5 is disposed on the striking side, and the corrugated cardboard 6 is disposed on the hammering head 16 side. The soft resin mat 5 is a soft material mat that is generally used as an anti-vibration mat, for example, a gel-like urethane resin, a urethane elastomer, or a thermoplastic elastomer, and a gel mat made of a gel-like resin is preferable. In order to ensure sound absorption performance, 3 mm to 5 mm is preferable. As examples of the soft resin mat 5, refer to Japanese Patent Application Laid-Open Nos. 2001-316447, 2007-85461, and 2004-323598. The soft resin mat 5 has high sound absorption performance, and the sound absorption performance is further enhanced by combination with the corrugated cardboard 6.

  The corrugated cardboard 6 is a general one having a front liner, a back liner, and a wavy core, and a thickness of 1.5 mm to 3 mm is preferable. The cardboard 6 is preferably a multilayer, and in this embodiment, three sheets are stacked. Since the air layer is included inside, the corrugated board 6 alone has high sound absorption performance, but if it enters water on a rainy day or the like, it will be temporarily deteriorated and crushed, so it is preferably used together with the soft resin mat 5.

  The metal plate 7 is an iron thin plate having a thickness of 1 mm to 1.5 mm, and makes it easy to feel the feel when an operator strikes a hard object. Usually, when a hard object is struck by a hammer made of a soft material, only the elasticity is felt by the hand, and the feel of hitting a hard object is small, which is inconvenient for the operator. Inserting the metal plate 7 makes it easier to feel the feel of hitting a hard object.

  The soft resin mat 5, the cardboard 6, and the metal plate 7 are gathered together by a rubber tube 13. The rubber tube 13 and the inside of the head wall portion 32 of the cap 3 are bonded with an adhesive.

  The joint portions 8, 9, and 10 are elastic rubber belts that join the right cap 3 and the left cap 3 in the drawing. The coupling portions 8, 9, and 10 are fixed by the side wall portion 31 and the fixing portion 12 of the cap 3, respectively. The coupling part is at least the lower part of the striking part, that is, the hammer handle side, and two places provided so as to sandwich the handle (only one place is visible in FIG. 1), and one place above the hammer It is preferable to be attached to. As for the coupling portion on the upper side of the hammer, the right coupling portion 9 and the left coupling portion 8 in the figure can be easily detached with the snap button 11. It is also possible to change to a known attachment method such as a hook-and-loop fastener instead of the snap button 11. On the other hand, the two connecting portions 10 and 10 have a structure that cannot be detached. Since the coupling portions 8, 9, and 10 have elasticity, the right cap 3 and the left cap 3 in the figure are securely coupled, and can withstand pulling from both during operation and come off. There is no deviation.

  When the soundproof cover 1 is attached to the hammer 15, the cap 3 is attached to the striking head 16 of the hammer 15 by passing the handle of the hammer 15 from above between the two lower coupling portions 10, 10 with the snap button 11 removed. Attach the snap button 11 at the end. When removing the soundproof cover 1, the snap button 11 is removed, the cap 3 is removed from the striking head 16, and the handle may be removed between the lower coupling portions 10 and 10.

  Table 1 shows the driving force and driving force when the soundproof cover 1 of this embodiment is attached to an iron double-ended hammer and when an iron double-ended hammer and a resin hammer (the hitting portion is made of polyvinyl chloride) are used. A comparison of noise is shown. The hammer was struck with a handrail of a wedge-tightened scaffold of temporary scaffolding material with the same striking force once with each hammer, and the driving distance after driving from before driving was measured. The sound generated at that time was measured with a digital sound level meter. In the measurement place, the daytime noise without hammer sound was 45 to 55 dB.

  From Table 1, it can be seen that the hammer to which the soundproof cover 1 for hammers of the present invention is attached can reduce the noise while ensuring the same striking force as the iron hammer.

  The embodiment of the present invention is not limited to the above-described embodiment. Improvements, changes, additions, and the like can be made without departing from the technical idea of the present invention. Such modifications and equivalents are also included in the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can provide a hammer cover and a hammer that can contribute to noise reduction in the construction field and the like, and its industrial utility value is great.

DESCRIPTION OF SYMBOLS 1 ... Hammer soundproof cover 2 ... Sound absorption material 3 ... Cap 31 ... Side wall part 32 ... Head wall part 4 ... Protection member 5 ... Soft resin mat 6 ... Corrugated cardboard 7 ... Metal plates 8, 9, 10 ... Coupling part 11 ... Snap button 12 ... Fixing part 13 ... Rubber tube 15 ... Double-ended hammer 16 ... Blow head

Claims (7)

A soundproof cover for a hammer that can be attached to and detached from a double-ended hammer,
A cap made of a soft material attached to both striking heads of the double-ended hammer;
Bonding the caps, a stretchable joint,
A soundproof cover for a hammer, comprising: a sound absorbing material housed in the cap.   The soundproof cover for a hammer according to claim 1, wherein the soundproof cover for a hammer is included in the cap and includes a metal plate on the striking side of the sound absorbing material.   The soundproof cover for a hammer according to claim 1 or 2, wherein the sound absorbing material includes a gel mat made of a gel-like resin.   The soundproof cover for a hammer according to claim 3, wherein the sound absorbing material further includes a multi-layered corrugated cardboard layer, and the corrugated cardboard layer is disposed closer to the hammer side than the gel mat.   The soundproof cover for hammers according to any one of claims 1 to 4, wherein the sound absorbing material and the metal plate are collected by a rubber tube.   The soundproof cover for a hammer according to any one of claims 1 to 5, wherein a protective member is bonded to the striking side of the cap.   A hammer equipped with the hammer soundproof cover according to claim 1.

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