JPH0325911Y2 - - Google Patents
Info
- Publication number
- JPH0325911Y2 JPH0325911Y2 JP7403385U JP7403385U JPH0325911Y2 JP H0325911 Y2 JPH0325911 Y2 JP H0325911Y2 JP 7403385 U JP7403385 U JP 7403385U JP 7403385 U JP7403385 U JP 7403385U JP H0325911 Y2 JPH0325911 Y2 JP H0325911Y2
- Authority
- JP
- Japan
- Prior art keywords
- head
- core material
- hammer
- handle
- integrally molded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011162 core material Substances 0.000 claims description 61
- 239000000463 material Substances 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- 230000005484 gravity Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 102200003959 rs11556986 Human genes 0.000 description 1
- 102220259718 rs34120878 Human genes 0.000 description 1
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
【考案の詳細な説明】
（技術分野）
本考案は、ヘツド部と柄部とが所定の樹脂材料
にて一体成形され、且つそれらの内部に所定の芯
材が埋設されて成る、略Ｔ字状の外形を有する一
体成形ハンマに係り、特にヘツド部に埋設される
ヘツド部芯材と柄部に埋設される柄部芯材との分
離によつて、ハンマ打撃時における柄部の衝撃が
緩和されるようにした一体成形ハンマにおいて、
その使用時の操作感を向上せしめる技術に関する
ものである。[Detailed Description of the Invention] (Technical Field) The present invention is an approximately T-shaped device in which a head portion and a handle portion are integrally molded from a predetermined resin material, and a predetermined core material is embedded inside them. This relates to an integrally molded hammer having a shaped outer shape, and in particular, by separating the head core material embedded in the head portion and the handle core material embedded in the handle portion, the impact on the handle portion during hammer impact is alleviated. In the integrally molded hammer,
The present invention relates to technology that improves the operational feeling during use.
（背景技術）
従来より、各種工事現場、作業現場等において
用いられるハンマとして、ヘツド部と柄部とが所
定の樹脂材料にて一体成形されて成る、略Ｔ字状
の外径を有する一体成形ハンマが知られている
が、このような一体成形ハンマでは、従来、ハン
マ打撃時における衝撃に耐え得るだけの強度を得
るために、ヘツド部および柄部の内部に略Ｔ字状
を成す芯材が埋設されているのが一般的であつ
た。そのため、従来の一体成形ハンマでは、ハン
マ打撃時における衝撃が、かかる芯材を介して柄
部から作業者の手に直接伝わり、作業者に苛酷な
労力負担を課すという不具合があつた。(Background Art) Conventionally, as a hammer used at various construction sites, work sites, etc., a head part and a handle part are integrally molded from a predetermined resin material, and have an approximately T-shaped outer diameter. Hammers are known, but such integrally molded hammers have traditionally had a core material that is approximately T-shaped inside the head and handle in order to obtain enough strength to withstand the impact when struck by the hammer. It was common for them to be buried. For this reason, conventional integrally molded hammers have had the disadvantage that the impact upon striking the hammer is directly transmitted from the handle to the operator's hand via the core material, imposing a severe labor burden on the operator.
これに対し、上述のような一体成形ハンマにお
いて、ヘツド部に埋設する芯材内部に空所を形成
し、その空所内に鉛粒を収容して、その鉛粒の摩
擦によつてハンマ打撃時の衝撃を吸収するように
した、所謂シヨクレスハンマが提案されている。
しかし、かかるシヨクレスハンマでは、鉛粒の摩
擦によつてハンマの打撃力自体も低下してしまう
ため、作業に要する打撃回数が多くなつて作業能
率が低下するという問題があつた。また、鉛粒が
ハンマ打撃時の衝撃によつて粉末化された後、摩
擦熱等により再び凝集されて団塊状と成り易く、
衝撃緩和機能が発揮され得なくなる恐れもなつ
た。 On the other hand, in the above-mentioned integrally molded hammer, a cavity is formed inside the core material buried in the head part, and lead grains are housed in the cavity, and the friction of the lead grains causes the hammer to strike. A so-called shock hammer has been proposed that absorbs the impact of
However, with such a cutless hammer, the impact force of the hammer itself decreases due to the friction of the lead grains, so there is a problem in that the number of hits required for the work increases and the work efficiency decreases. In addition, after the lead particles are pulverized by the impact of a hammer strike, they tend to agglomerate again due to frictional heat, forming a lump-like shape.
There is also a fear that the shock mitigation function will not be effective.
そこで、本願出願人は、先に、特願昭60−
33417号において、ヘツド部と柄部とが略Ｔ字状
を成す状態で所定の樹脂材料にて一体成形される
とともに、該ヘツド部の長手方向に、長手状のヘ
ツド部芯材が、その一端側に形成された打撃部に
おいて露出する状態で埋設せしめられ、且つかか
るヘツド部芯材に対して、所定の柄部芯材が切り
離され、前記樹脂材料によつて分離せしめられた
状態において前記柄部内に埋設されて成る一体成
形ハンマを提案した。 Therefore, the applicant of this application first filed a patent application filed in 1983-
In No. 33417, a head portion and a handle portion are integrally molded with a predetermined resin material in a substantially T-shape, and an elongated head portion core material is attached at one end in the longitudinal direction of the head portion. A predetermined handle core material is embedded in an exposed state in a striking part formed on the side, and a predetermined handle core material is cut off from the head core material, and the handle is separated by the resin material. We proposed an integrally molded hammer that is embedded inside the part.
このような一体成形ハンマによれば、ヘツド部
芯材と柄部芯材との間に介在する樹脂材料によつ
てハンマ打撃時の衝撃が吸収され、ヘツド部と柄
部との間における衝撃の伝達が大幅に緩和される
ため、作業者の手に伝わる衝撃が軽減して、作業
者の労力負担が低減されるのである。また、前記
従来のシヨツクレスハンマのように、鉛粒の摩擦
によつて衝撃の緩和を図るものではないので、シ
ヨツク防止機能を長期間にわたつて良好に発揮す
ることが可能となるのであり、打撃力が低下して
作業能率が低下するようなこともないのである。 According to such an integrally molded hammer, the impact at the time of hammer impact is absorbed by the resin material interposed between the head core material and the handle core material, and the impact between the head part and the handle part is reduced. Since the transmission is greatly reduced, the impact transmitted to the worker's hands is reduced, and the labor burden on the worker is reduced. In addition, unlike the conventional shockless hammer, the impact is not alleviated by the friction of lead particles, so the shock prevention function can be effectively exerted over a long period of time. There is no possibility that the impact force will decrease and the work efficiency will decrease.
（考案が解決しようとする課題）
ところで、このような一体成形ハンマは、一般
に、打撃作業に際して、ヘツド部芯材の打撃部を
使用する場合と、それとは反対側の、樹脂材料で
覆われた側のヘツド部端部を打撃部として使用す
る場合の二通りの形態で使用されることとなる
が、かかる一体成形ハンマでは、ヘツド部が柄部
よりもヘツド部芯材の露出側の部分においてその
反対側の部分よりも重くなるのが普通であること
から、ヘツド部芯材の打撃部を使用する作業の場
合にはそれほど問題はないものの、樹脂材料で覆
われた側の端部を打撃部として使用する作業を行
なう場合には、ハンマを実際に振り上げ或いは振
り下ろす際の操作感が、作業者の体得しているハ
ンマの操作感とずれて、作業者に違和感を抱かせ
ることがあり、使用時の操作感が必ずしも良好で
あるとは言い難かつた。また、この傾向は、ヘツ
ド部芯材の打撃部（露出部）における打撃有効面
積や打撃効果向上等のために、そのヘツド部芯材
の打撃部（露出部）が埋設部に比べて太くされる
場合や、樹脂材料で覆われた側の端部を打撃部と
する打撃作業に対してハンマの耐久性の向上を図
るために、ヘツド部芯材の外周面が、その埋設側
端部の所定長さの部分においてテーパ形状とされ
る場合などにおいて、特に著しいものであつた。(Problem to be solved by the invention) By the way, in general, such an integrally molded hammer is used when the striking part of the head core material is used during striking work, and when the striking part of the head core material is used, and when the striking part of the head core material is used, the opposite side is covered with a resin material. It can be used in two ways: when the end of the side head part is used as the striking part, but in such an integrally molded hammer, the head part is used at the exposed side of the head core material rather than the handle part. It is normal for the part to be heavier than the part on the opposite side, so this is not a big problem when using the striking part of the head core material. When performing work in which the hammer is used as a part, the feeling of operation when actually swinging the hammer up or down may differ from the feeling of operation of the hammer that the worker is accustomed to, making the worker feel uncomfortable. However, it was difficult to say that the operating feel during use was necessarily good. Additionally, this tendency is such that the striking part (exposed part) of the head core material is made thicker than the buried part in order to improve the effective striking area and impact effect in the striking part (exposed part) of the head core material. In order to improve the durability of the hammer for striking operations where the end covered with a resin material is used as the striking part, the outer circumferential surface of the head core material should This was particularly noticeable when the length was tapered.
（課題を解決するための手段）
本考案は、このような事情に鑑みて為されたも
のであり、その要旨とするところは、前述の如
き、ヘツド部と柄部とが略Ｔ字状を成す状態で所
定の樹脂材料にて一体成形されるとともに、該ヘ
ツド部の長手方向に、長手状のヘツド部芯材が、
その一端側に形成された打撃部において露出する
状態で埋設せしめられ、且つかかるヘツド部芯材
に対して、所定の柄部芯材が切り離され、前記樹
脂材料によつて分離せしめられた状態において前
記柄部内に埋設されて成る一体成形ハンマにおい
て、前記ヘツド芯材を、その前記打撃部とは反対
側の端部において、該ヘツド部芯材を構成する材
料よりも比重の大きい材料から成るバランスウエ
イトを有する構成としたことにある。(Means for solving the problem) The present invention was made in view of the above circumstances, and its gist is that the head portion and the handle portion are approximately T-shaped as described above. The head is integrally molded with a predetermined resin material, and a longitudinal head core material is formed in the longitudinal direction of the head.
It is buried in an exposed state in the striking part formed on one end side, and a predetermined handle core material is cut off from the head core material and separated by the resin material. In the integrally molded hammer embedded in the handle, the head core is provided with a balance made of a material having a higher specific gravity than the material constituting the head core at its end opposite to the striking part. The reason is that the structure has a weight.
（作用および考案の効果）
このような一体成形ハンマによれば、ハンマ打
撃時の衝撃を緩和する衝撃緩和機能が長期間にわ
たつて良好に発揮されることや、作業能率が向上
することなど、ヘツド部芯材と柄部芯材とを分離
したことに起因する種々の効果が得られることは
勿論、バランスウエイトによつて柄部の両側に位
置するヘツド部の部分の重さを略等しくできるこ
とから、ヘツド部芯材の打撃部或いは樹脂材料に
て覆われた側のヘツド部の端部の何れで打撃を行
なう場合においても、実際のハンマ操作感と作業
者が体得しているハンマ操作感とを略一致させ
て、ハンマ使用時の操作感を向上させることがで
きるのである。なお、かかる操作感の向上効果
は、ヘツド部芯材の打撃部がその埋設部よりも太
くされている場合や、ヘツド部芯材の埋設側端部
の所定長さの部分がテーパ部とされているような
場合において、特に顕著に得ることができるもの
である。(Functions and Effects of the Idea) According to such an integrally molded hammer, the shock-reducing function that reduces the impact when struck by the hammer can be satisfactorily exhibited over a long period of time, and work efficiency can be improved. Not only can various effects be obtained by separating the head core material and the handle core material, but also the weight of the head portion located on both sides of the handle can be made approximately equal using balance weights. Therefore, regardless of whether the hammer is struck by the striking part of the head core material or the end of the head part covered with the resin material, the actual feeling of operating the hammer and the feeling of operating the hammer that the operator has experienced are different. This makes it possible to improve the operational feel when using the hammer. Note that this effect of improving the operational feeling can be achieved when the striking part of the head core material is made thicker than its buried part, or when a predetermined length of the buried side end of the head core material is made into a tapered part. This is especially noticeable in cases where
（実施例）
以下、本考案をより一層具体的に明らかにする
ために、その一実施例を図面に基づいて詳細に説
明する。(Example) Hereinafter, in order to clarify the present invention more specifically, one example thereof will be described in detail based on the drawings.
第１図および第２図は、それぞれ本考案に従う
ハンマの一例を示す正面図および側面図である。
これらの図において、１２はヘツド部であり、そ
の長手方向の中央部において柄部１４の一端に連
結され、その柄部１４と略Ｔ字状を成す状態で、
硬度（シヨアー硬さHs−Ｄスケール）が60程度
の硬質ウレタン樹脂材料１６にて一体成形されて
いる。そして、かかるハンマのヘツド部１２内
に、その長手方向に沿つて、機械構造用炭素鋼Ｓ
５５Ｃから成る断面円形のヘツド部芯材１８が埋
設されている一方、柄部１４内に、その長手方向
に沿つて、機械構造用炭素鋼Ｓ４０Ｃから成る断
面円形の柄部芯材２０が埋設されている。 1 and 2 are a front view and a side view, respectively, showing an example of a hammer according to the present invention.
In these figures, 12 is a head part, which is connected to one end of the handle part 14 at the center part in the longitudinal direction, and forms a substantially T-shape with the handle part 14.
It is integrally molded from a hard urethane resin material 16 having a hardness (Shoer hardness Hs-D scale) of about 60. Then, in the head portion 12 of the hammer, along the longitudinal direction, a machine structural carbon steel S
A head core material 18 with a circular cross section made of 55C is embedded, while a handle core material 20 with a circular cross section made of machine structural carbon steel S40C is embedded in the handle 14 along its longitudinal direction. ing.
ヘツド部芯材１８は、第３図からも明らかなよ
うに、その一端側がヘツド部１２の外径に略等し
い太径部２２とされるとともに、他端側がそれよ
りも一まわり細い細径部２４とされており、細径
部２４において、太径部２２がヘツド部１２の一
端側に露出する状態で、ヘツド部１２に埋設され
ている。すなわち、ヘツド部芯材１８の太径部２
２によつてハンマの一方の打撃部が構成されてい
るのであり、またヘツド部芯材１８の細径部２４
側の端部が所定厚さの樹脂材料１６で覆われるこ
とによつて、ハンマの他方の打撃部が構成されて
いるのである。 As is clear from FIG. 3, the head core member 18 has a large diameter portion 22 at one end that is approximately equal to the outer diameter of the head portion 12, and a narrow diameter portion that is slightly smaller than the other end. 24, and is embedded in the head portion 12 with the large diameter portion 22 exposed at one end side of the head portion 12 in the narrow diameter portion 24. That is, the large diameter portion 2 of the head core material 18
2 constitutes one striking part of the hammer, and the narrow diameter part 24 of the head core member 18
The other striking part of the hammer is constructed by covering the side end with a resin material 16 of a predetermined thickness.
また、ヘツド部芯材１８の細径部２４は、太径
部２２側の略半分を占める部分が外径の等しい円
柱部２８とされるとともに、残りの部分が円柱部
２８との境界部から端部に向かうに従つてその外
径が徐々に小さくなる円錐台形状のテーパ部３０
とされており、これによつて樹脂部材１６で覆わ
れた側の端部を打撃部とする打撃に対して、樹脂
部材１６に亀裂が生じることが良好に抑制される
ようになつている。さらに、細径部２４の太径部
２２に対する連結部には、周方向に溝部２６が形
成されて、かかる溝部２６に樹脂材料１６が侵入
せしめられており、これによつてヘツド部芯材１
８が樹脂材料１６にて強固に保持されている。 Further, in the narrow diameter portion 24 of the head member core material 18, a portion occupying approximately half of the large diameter portion 22 side is a cylindrical portion 28 having the same outer diameter, and the remaining portion is formed from a boundary portion with the cylindrical portion 28. A truncated conical tapered portion 30 whose outer diameter gradually decreases toward the end.
This effectively suppresses the occurrence of cracks in the resin member 16 when the end portion of the resin member 16 is covered with the impact portion. Furthermore, a groove 26 is formed in the circumferential direction at the connecting portion of the narrow diameter portion 24 to the large diameter portion 22, and the resin material 16 is allowed to enter the groove 26.
8 is firmly held by a resin material 16.
一方、前記柄部芯材２０は、その一端部が上記
ヘツド部芯材１８の細径部２４の外周面に対して
所定の間〓を隔てて切り離された状態で配設され
ており、かかる間〓内に侵入、介在せしめられた
樹脂材料１６によつてヘツド部芯材１８と分離さ
れている。なお、この柄部芯材２０の上記ヘツド
部芯材１８に対面する側の端部には面取加工が施
されており、ハンマ打撃時において柄部芯材２０
の端部部分に加えられる衝撃荷重が良好に分散せ
しめられるようになつている。 On the other hand, the handle core material 20 is disposed such that one end thereof is separated from the outer peripheral surface of the narrow diameter portion 24 of the head core material 18 by a predetermined distance. It is separated from the head member core material 18 by a resin material 16 inserted and interposed in the gap. Note that the end of the handle core material 20 facing the head core material 18 is chamfered, and the handle core material 20 is chamfered when struck by a hammer.
The impact load applied to the end portions of the bearing is well distributed.
そして、このようなハンマにおいて、前記ヘツ
ド部芯材１８の細径部２４側の端面に開口して有
底穴３２が形成され、かかる有底穴３２内に鉛か
らなるバランスウエイト３４が収容されて、柄部
１４を挟んでその両側に位置するヘツド部１２の
重さが略等しくされている。 In such a hammer, a bottomed hole 32 is formed by opening at the end surface of the head core material 18 on the narrow diameter portion 24 side, and a balance weight 34 made of lead is accommodated in the bottomed hole 32. The weights of the head portions 12 located on both sides of the handle portion 14 are approximately equal.
このようなハンマによれば、ヘツド部芯材１８
と柄部芯材２０との間に所定の間〓が設けられ
て、その間〓内にウレタン樹脂材料１６が侵入、
介在させられていることから、ハンマ打撃時にお
いて柄部１４に伝わる衝撃が大幅に緩和され、柄
部１４を介して作業者の手に伝わる衝撃が軽減さ
れるのである。また、鉛粒の摩擦によつて衝撃を
吸収する形式のハンマのように、使用中に衝撃緩
和機能が低下する恐れがないため、長期間にわた
つて良好な衝撃緩和効果が得られるのであり、鉛
粒の摩擦によつて打撃力が低減することもないの
で、作業能率が低下するようなこともないのであ
る。 According to such a hammer, the head portion core material 18
A predetermined gap is provided between the handle core material 20 and the urethane resin material 16 enters into the gap.
Because of this, the impact transmitted to the handle 14 during hammer impact is greatly reduced, and the impact transmitted to the operator's hand via the handle 14 is reduced. In addition, unlike hammers that absorb shock through the friction of lead particles, there is no risk that the shock-reducing function will deteriorate during use, so good impact-reducing effects can be obtained over a long period of time. Since the impact force is not reduced by the friction of the lead particles, there is no reduction in work efficiency.
しかも、かかるハンマによれば、ヘツド部芯材
１８の細径部２４側の端部にバランスウエイト３
４が装着されて、ヘツド部１２の柄部１４を挟ん
で両側に位置する部分の重さが略等しくされてい
ることから、ヘツド部芯材１８の太径部２２を打
撃部とする打撃作業、或いは樹脂材料１６にて覆
われたヘツド部１２の端部を打撃部とする打撃作
業の何れの場合においても、実際のハンマ操作感
と作業者が体得しているハンマ操作感とがほぼ一
致し、極めて良好な操作感が得られるのである。 Moreover, according to such a hammer, a balance weight 3 is attached to the end of the head core member 18 on the narrow diameter portion 24 side.
4 is attached, and the weights of the parts located on both sides of the handle part 14 of the head part 12 are approximately equal. , or in a striking operation in which the end of the head portion 12 covered with the resin material 16 is used as a striking part, the actual feeling of operating the hammer and the feeling of operating the hammer experienced by the operator are almost the same. This results in an extremely good operating feel.
以上、本考案の一実施例を説明したが、これは
文字通りの例示であり、本考案は、かかる具体例
に限定して解釈されるべきものではない。 Although one embodiment of the present invention has been described above, this is a literal illustration, and the present invention should not be interpreted as being limited to this specific example.
例えば、前記実施例では、ヘツド部芯材１８が
機械構造用炭素鋼Ｓ５５Ｃにて構成される一方、
バランスウエイト３４が鉛にて構成されていた
が、ヘツド部芯材やバランスウエイトは必ずしも
それら例示の材料にて構成されている必要はな
い。ただし、バランスウエイトの材料としては、
当然のことながら、ヘツド部芯材を構成する材料
よりも比重の重いものを採用する必要がある。 For example, in the embodiment described above, the head core material 18 is made of S55C carbon steel for machine structural use, while
Although the balance weight 34 is made of lead, the head core material and the balance weight do not necessarily need to be made of these exemplified materials. However, as a material for balance weights,
Naturally, it is necessary to use a material that has a higher specific gravity than the material constituting the head core material.
また、柄部芯材や樹脂材料にも前記実施例以外
の材料を採用することが可能である。 Further, it is also possible to employ materials other than those in the above embodiments for the handle core material and resin material.
その他、一々列挙はしないが、本考案が、その
趣旨を逸脱しない範囲内において、種々なる変
形、改良等を施した態様で実施し得ることは、言
うまでもないところである。 Although not listed in detail, it goes without saying that the present invention can be implemented with various modifications and improvements without departing from the spirit thereof.
第１図は本考案に係るハンマの一実施例を示す
正面図であり、第２図はその側面図である。第３
図は第１図のハンマの要部を示す正面一部切欠図
であり、第４図は第３図における−断面図で
ある。
１２……ヘツド部、１４……柄部、１６……硬
質ウレタン樹脂材料、１８……ヘツド部芯材、２
０……柄部芯材、２２……太径部（打撃部）、２
４……細径部、２６……溝部、２８……円柱部、
３０……テーパ部、３４……バランスウエイト。
FIG. 1 is a front view showing an embodiment of a hammer according to the present invention, and FIG. 2 is a side view thereof. Third
This figure is a partially cutaway front view showing the main parts of the hammer shown in FIG. 1, and FIG. 4 is a cross-sectional view taken at - in FIG. 3. 12...Head part, 14...Handle part, 16...Hard urethane resin material, 18...Head part core material, 2
0... Handle core material, 22... Large diameter part (striking part), 2
4...Small diameter part, 26...Groove part, 28...Cylindrical part,
30... Taper part, 34... Balance weight.
Claims (1)
定の樹脂材料にて一体成形されるとともに、該
ヘツド部の長手方向に、長手状のヘツド部芯材
が、その一端側に形成された打撃部において露
出する状態で埋設せしめられ、且つかかるヘツ
ド部芯材に対して、所定の柄部芯材が切り離さ
れ、前記樹脂材料によつて分離せしめられた状
態において前記柄部内に埋設されて成る一体成
形ハンマにして、 前記ヘツド部芯材が、その前記打撃部とは反
対側の端部において、該ヘツド部芯材を構成す
る材料よりも比重の大きい材料から成るバラン
スウエイトを有していることを特徴とする一体
成形ハンマ。 (2) 前記ヘツド部芯材が鉄系材料にて構成される
と共に、該ヘツド部芯材の前記打撃部とは反対
側の端部の端面から内部に入り込むように、鉛
系材料から成る前記バランスウエイトが装着さ
れている実用新案登録請求の範囲第１項記載の
一体成形ハンマ。 (3) 前記ヘツド部芯材が、前記打撃部を構成する
太径部と前記ヘツド部の前記樹脂材料内に埋設
される細径部とから成り、且つ該太径部に対す
る該細径部の連結部の周りに、周方向の溝部が
設けられている実用新案登録請求の範囲第１項
または第２項記載の一体成形ハンマ。[Claims for Utility Model Registration] (1) The head portion and the handle portion are integrally molded with a predetermined resin material in a substantially T-shape, and a longitudinal head portion is formed in the longitudinal direction of the head portion. A part core material is buried in an exposed state in a striking part formed on one end thereof, and a predetermined handle part core material is cut off from the head part core material and separated by the resin material. The integrally molded hammer is embedded in the handle in a pressed state, and the head core has a material that is thicker than the material constituting the head core at an end thereof opposite to the striking part. An integrally molded hammer characterized by having a balance weight made of a material with a high specific gravity. (2) The head core material is made of an iron-based material, and the head core material is made of a lead-based material so as to enter the inside from the end face of the end opposite to the striking part of the head core material. An integrally molded hammer according to claim 1, which is equipped with a balance weight. (3) The head part core material is composed of a large diameter part constituting the striking part and a narrow diameter part embedded in the resin material of the head part, and the narrow diameter part is larger than the large diameter part. The integrally molded hammer according to claim 1 or 2, wherein a circumferential groove is provided around the connecting portion.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7403385U JPH0325911Y2 (en) | 1985-05-17 | 1985-05-17 | |
| US06/829,111 US4697481A (en) | 1985-02-21 | 1986-02-14 | Integrally molded hammer with separated head and handle cores |
| GB08603853A GB2172834B (en) | 1985-02-21 | 1986-02-17 | Integrally molded hammer with separated head and handle cores |
| FR8602326A FR2577458B1 (en) | 1985-02-21 | 1986-02-20 | MONOBLOCK MOLDING HAMMER WITH SEPARATE CORES OF HEAD AND HANDLE |
| CA000502266A CA1257181A (en) | 1985-02-21 | 1986-02-20 | Integrally molded hammer with separated head and handle cores |
| DE3605520A DE3605520C2 (en) | 1985-02-21 | 1986-02-20 | One-piece hammer with separate head and handle core bodies |
| KR1019860001241A KR860006319A (en) | 1985-02-21 | 1986-02-21 | Integral molded hammer with separate head core and handle core |
| KR2019920021812U KR930003350Y1 (en) | 1985-02-21 | 1992-11-06 | Integral molded hammer with separate head core and handle core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7403385U JPH0325911Y2 (en) | 1985-05-17 | 1985-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61191878U JPS61191878U (en) | 1986-11-29 |
| JPH0325911Y2 true JPH0325911Y2 (en) | 1991-06-05 |
Family
ID=30613955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7403385U Expired JPH0325911Y2 (en) | 1985-02-21 | 1985-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325911Y2 (en) |
-
1985
- 1985-05-17 JP JP7403385U patent/JPH0325911Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61191878U (en) | 1986-11-29 |
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