JPH0516162U - Shock absorber for nailer - Google Patents
Shock absorber for nailerInfo
- Publication number
- JPH0516162U JPH0516162U JP7050991U JP7050991U JPH0516162U JP H0516162 U JPH0516162 U JP H0516162U JP 7050991 U JP7050991 U JP 7050991U JP 7050991 U JP7050991 U JP 7050991U JP H0516162 U JPH0516162 U JP H0516162U
- Authority
- JP
- Japan
- Prior art keywords
- bumper
- receiving surface
- striking
- flat
- impact
- 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.)
- Pending
Links
Landscapes
- Portable Nailing Machines And Staplers (AREA)
Abstract
(57)【要約】
【構成】 ノーズ部4におけるバンパ5の下面受け面a
を平坦状に形成し、該平坦状受け面aの外側にテーパー
状の受け面bを連続形成し、前記バンパ5の下端外周部
を前記テーパー状の受け面bで支持させ、且つ前記バン
パ5の下面と平坦状受け面aとの間に間隙をもたせて支
持させた。
【効果】 打撃ピストン2の下面がバンパ5によって受
けられて停止する際、衝撃を受けたバンパ5がテーパー
状受け面bとの間で滑りを生じ、内方に変形しながら移
動して初期緩衝が行なわれ、その後、平坦受け面abに
当接して下方に変形して2次緩衝が行なわれる。上記2
段階緩衝によりバンパ5の変形量は長くなるので、衝撃
音が減少する。しかも、上下方向における変形量は小さ
いので、打ち込み力は安定に保持される。(57) [Summary] [Structure] Lower surface a of the bumper 5 on the nose portion 4
Is formed in a flat shape, a tapered receiving surface b is continuously formed outside the flat receiving surface a, and the lower end outer peripheral portion of the bumper 5 is supported by the tapered receiving surface b. A support was provided with a gap between the lower surface and the flat receiving surface a. [Effect] When the lower surface of the striking piston 2 is received by the bumper 5 and stops, the bumper 5 that has received an impact causes a slip between the impact receiving piston 2 and the tapered receiving surface b and moves while deforming inward to provide an initial cushion. Then, the flat cushioning surface ab is brought into contact with the flat receiving surface ab to be deformed downward to perform secondary cushioning. 2 above
Since the amount of deformation of the bumper 5 is increased by the step buffer, the impact noise is reduced. Moreover, since the amount of deformation in the vertical direction is small, the driving force is stably maintained.
Description
【0001】[0001]
本考案は打撃ピストンの駆動時の衝撃を緩衝させて衝撃音を減少させる釘打機 の衝撃緩衝装置に関するものである。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock-cushioning device for a nailing machine that shocks when a striking piston is driven to reduce shock noise.
【0002】[0002]
一般に釘打機の打撃ピストンの衝撃を緩衝させるバンパが打撃シリンダの下方 に配置されている。バンパは打撃ピストンの停止位置を確定するため、通常は硬 質ゴムによって形成され、その下面は平坦な面で支持されている。 In general, a bumper that cushions the impact of the impact piston of the nail driver is arranged below the impact cylinder. The bumper is usually made of hard rubber in order to determine the stopping position of the striking piston, and its lower surface is supported by a flat surface.
【0003】 ところで、打撃ピストンがバンパに衝突した際、釘を打ち込んだ打撃ピストン の余剰衝撃力がバンパを介して釘打機の機体に衝撃的に伝播して衝撃音が発生す る。このような衝撃音を抑えるためには、バンパのボリュームを増大させればよ い。しかしながら、バンパのボリュームを大きくするためには、バンパの収納ス ペースも大きくする必要があるから、必然的に釘打機が大型となり、これに伴な い重量も大きくなるという問題がある。これに対し、バンパのボリュームを増大 させる代りに、バンパの変形量を大きくして長いストロークで打撃ピストンを緩 衝させることも考えられるが、この場合、打撃ピストンの余剰衝撃力の変動に応 じて打撃の度にバンパの変形量が微妙に異なるために打撃ピストンの停止位置が 定まらず、釘の打ち込み力(打ち込み深さ)が安定しなくなるという問題がある 。By the way, when the striking piston collides with the bumper, an excessive impact force of the striking piston into which the nail is driven is shock-propagated to the machine body of the nailing machine through the bumper, and an impact sound is generated. The volume of the bumper should be increased to suppress such impact noise. However, in order to increase the volume of the bumper, it is necessary to increase the storage space of the bumper, which inevitably causes the nailing machine to become large in size, which causes a problem that the weight also increases. On the other hand, instead of increasing the volume of the bumper, it is possible to increase the amount of deformation of the bumper to cause the striking piston to strike the stroke with a long stroke. Since the amount of deformation of the bumper slightly changes with each impact, the stop position of the impact piston is not fixed, and the nail driving force (driving depth) becomes unstable.
【0004】[0004]
本考案は前記欠点を解消し、特にバンパのボリュームや打撃方向における変形 量を大きくすることなしに衝撃音を減少させることができる釘打機の衝撃緩衝装 置を提供することをその目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and to provide an impact shock absorbing device for a nailing machine, which can reduce the impact noise without increasing the volume of the bumper or the deformation amount in the impact direction. .
【0005】[0005]
【目的を達成するための手段】 前記目的を達成するため、本考案に係る釘打機の衝撃緩衝装置は、釘を打撃す る打撃ピストンを摺動自在に収容する打撃シリンダと、該打撃シリンダの下方に 延設されて前記打撃ピストンと一体に結合したドライバの摺動を案内するととも に前記釘を収容するノーズ部とを有し、前記ノーズ部の上端に打撃時の打撃ピス トンを受けるバンパを配置した釘打機において、前記バンパの下面を受ける受け 面を平坦状に形成し、該平坦状受け面の外側にテーパー状の受け面を連続形成し 、前記バンパの下端外周部を前記テーパー状の受け面で支持させ、且つ前記バン パの下面と平坦状受け面との間に間隙をもたせて支持させたことを特徴とする。 なお、前記バンパの下面から突起を突出形成し、該突起を前記平坦状受け面に 当接させて前記バンパを支持するのが好ましい。In order to achieve the above object, an impact shock absorber for a nailing machine according to the present invention is a striking cylinder that slidably accommodates a striking piston for striking a nail, and the striking cylinder. Has a nose portion which extends downwardly of the nose portion for accommodating the nail and which guides the sliding movement of a driver integrally connected to the impact piston, and the upper end of the nose portion receives the impact piston at the time of impact. In a nailing machine in which a bumper is arranged, a receiving surface for receiving the lower surface of the bumper is formed into a flat shape, a tapered receiving surface is continuously formed outside the flat receiving surface, and the outer peripheral portion of the lower end of the bumper is formed into a flat shape. It is characterized in that it is supported by a tapered receiving surface, and is supported with a gap between the lower surface of the bumper and the flat receiving surface. It is preferable that a protrusion is formed so as to project from the lower surface of the bumper, and the protrusion is brought into contact with the flat receiving surface to support the bumper.
【0006】[0006]
前記構成によれば、打撃ピストンを駆動させると、打撃ピストンの下面はバン パによって受けられて停止する。この際、打撃ピストンの衝撃を受けたバンパが 、ノーズ部材のテーパー受け面との間で滑りを生じるとともに、内方に変形しな がら移動され、この間で打撃ピストンの衝撃力の一部がバンパの弾性変形と滑り 抵抗によって吸収され、初期緩衝が行なわれ、その直後にバンパの下面が平坦受 け面に当接し、この変形によって打撃ピストンの衝撃力の残りが吸収され、通常 時と同様の2次緩衝が行なわれる。このように、バンパによる打撃ピストンの緩 衝は2段階にわたって行なわれ、緩衝のためのバンパの変形量は従来に比べて長 くなるので、衝撃音が減少する。しかも、初期緩衝による変形はテーパー受け面 に沿う変形で、ダンパは内方へ変形することになり、上下方向における変形量は 小さい。したがって、バンパによるピストン停止位置は従来とほとんど変りがな いので、打ち込み力は安定に保持される。 According to the above configuration, when the striking piston is driven, the lower surface of the striking piston is received by the bumper and stops. At this time, the bumper that receives the impact of the striking piston slides against the taper receiving surface of the nose member and moves while deforming inward, during which part of the impact force of the striking piston is absorbed. Is absorbed by the elastic deformation and slip resistance of the bumper, and the initial cushioning is performed, and immediately after that, the lower surface of the bumper abuts the flat bearing surface, and this deformation absorbs the rest of the impact force of the striking piston, which is the same as in normal times. Secondary buffering is performed. In this way, the impact of the striking piston by the bumper is performed in two steps, and the amount of deformation of the bumper for cushioning is longer than in the conventional case, so the impact noise is reduced. Moreover, the deformation due to the initial buffering is the deformation along the taper receiving surface, which means that the damper is deformed inward, and the amount of vertical deformation is small. Therefore, the piston stop position by the bumper is almost the same as the conventional one, and the driving force is stably maintained.
【0007】 なお、バンパの下面から突出した突起によってバンパを支持するようにすれば 、簡単な構造によってバンパの緩衝後の復帰移動を行なうことができる。If the bumper is supported by the protrusion protruding from the lower surface of the bumper, the bumper can be returned and moved after being buffered with a simple structure.
【0008】[0008]
【実施例】 以下、図面によって本考案の実施例について説明すると、図1は釘打機の要部 を示すもので、この釘打機は、打撃シリンダ1と、その内部に摺動自在に収容さ れた打撃ピストン2と、上記打撃シリンダ1の下方に延設されて上記打撃ピスト ン2と一体に結合した釘打撃用ドライバ3を案内するとともに釘供給機構から供 給された釘を収容するノーズ部4とを備え、打撃シリンダ1の上方に設けられた ヘッドバルブ(図示せず)の開閉作動により上記打撃シリンダ1の上方に圧縮空 気が供給、排気されることにより、打撃ピストン2を駆動してノーズ部4内の釘 を打撃して打ち出すものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a main part of a nailing machine. The nailing machine is slidably housed in an impact cylinder 1 and inside thereof. The striking piston 2 and the nail striking driver 3 extending below the striking cylinder 1 and integrally connected to the striking piston 2 are guided, and the nails supplied from the nail supply mechanism are accommodated. And a compressed air is supplied to and discharged from the striking cylinder 1 by the opening / closing operation of a head valve (not shown) provided above the striking cylinder 1. It is driven to hit the nail in the nose portion 4 to drive it out.
【0009】 ノーズ部4の上端には打撃時の打撃ピストン2を受けるバンパ5の収容部6が 形成され、該収容部6内にバンパ5が配置されている。収容部6内のバンパ5の 受け面は、バンパ5の下面を受ける受け面aが平坦状に、その外側に連続する受 け面bがテーパー状に形成されている。なお、テーパー状受け面bの上部でバン パ5の側面を受ける受け面cは段部7を介して打撃シリンダ1の下端に接続し、 このためバンパ5は上記段部7に係合して収容部6から飛び出さないようになっ ている。A housing portion 6 for a bumper 5 that receives the striking piston 2 at the time of striking is formed at the upper end of the nose portion 4, and the bumper 5 is arranged in the housing portion 6. The receiving surface of the bumper 5 in the housing portion 6 is formed such that the receiving surface a for receiving the lower surface of the bumper 5 is flat and the receiving surface b continuous to the outside is tapered. The receiving surface c that receives the side surface of the bumper 5 at the upper part of the tapered receiving surface b is connected to the lower end of the striking cylinder 1 via the step portion 7, so that the bumper 5 is engaged with the step portion 7. It is designed so that it does not jump out of the storage section 6.
【0010】 これに対し、バンパ5は弾性を有する合成ゴム、合成樹脂等から環状に形成さ れ、外側周面には上記段部7に係合するように膨突部5aが形成されている。ま た、上記バンパ5の下端外周部は上記テーパー状受け面bで支持され、さらに上 記バンパ5の下面には突起5bが形成され、突起5bを上記平坦状受け面aに当 接させて上記バンパ5を平坦状受け面aとの間に間隙Sをもたせて支持させてい る。突起5bの代わりにバネ(図示せず)をバンパ5の下方に配置する構成でも よいが、構造がやや複雑になる。On the other hand, the bumper 5 is formed of an elastic synthetic rubber, synthetic resin, or the like in an annular shape, and a bulging projection 5 a is formed on the outer peripheral surface so as to engage with the step 7. . In addition, the outer peripheral portion of the lower end of the bumper 5 is supported by the tapered receiving surface b, and the projection 5b is formed on the lower surface of the bumper 5, and the projection 5b is brought into contact with the flat receiving surface a. The bumper 5 is supported with a gap S between it and the flat receiving surface a. A spring (not shown) may be arranged below the bumper 5 instead of the protrusion 5b, but the structure is slightly complicated.
【0011】 前記構成において、打撃ピストン2を駆動させると、打撃ピストン2の下面は バンパ5によって受けられて停止する。この際、まず図2のように、釘を打ち込 んだ打撃ピストン2の余剰衝撃力を上端面に受けたバンパ5の下端外周縁が、ノ ーズ部4材のテーパー状受け面bとの間で滑りを生じて円筒状バンパ5の下端部 が内方に変形されながらバンパ5全体が下方に移動され、この間で打撃ピストン 2の衝撃力の一部が滑り抵抗と変形によって吸収されて初期緩衝が行なわれる。 上記初期緩衝でバンパ5の下端はノーズの平坦受け面aに前面接触するように変 形され、て、更にバンパ5は打撃ピストン2の余剰衝撃力によって上端からの圧 縮力を受けて、通常時と同様に弾力的に変形されて打撃ピストン2の衝撃力を吸 収して打撃ピストン2を停止させる。In the above structure, when the striking piston 2 is driven, the lower surface of the striking piston 2 is received by the bumper 5 and stops. At this time, as shown in FIG. 2, first, the outer peripheral edge of the lower end of the bumper 5 whose upper end surface receives the surplus impact force of the hammering impact piston 2 becomes the tapered receiving surface b of the nose portion 4 material. The entire bumper 5 is moved downward while the lower end of the cylindrical bumper 5 is deformed inward by sliding between them, during which part of the impact force of the striking piston 2 is absorbed by slip resistance and deformation. Initial buffering is performed. By the above initial cushioning, the lower end of the bumper 5 is deformed so as to come into front contact with the flat receiving surface a of the nose. Further, the bumper 5 receives a compressive force from the upper end by the surplus impact force of the striking piston 2, It is elastically deformed in the same manner as at the time to absorb the impact force of the striking piston 2 and stop the striking piston 2.
【0012】 なお、打撃ピストン2が上昇した後は、上記突起5b及びバンパ5自他の弾性 復元力によりバンパ5は再び元の位置に復帰する。After the striking piston 2 moves up, the bumper 5 returns to its original position again due to the elastic restoring force of the projection 5b and the bumper 5 itself.
【0013】 このように、バンパ5による打撃ピストン2の緩衝は2段階にわたって行なわ れ、緩衝のためのバンパ5の変形量は従来に比べて長くなるので、衝撃音が減少 する。実験によれば、5%程度の衝撃音の減少が確かめられた。従来構造で同程 度の減音効果を達成するためには、2倍のボリュームのバンパが必要である。し かも、初期緩衝による変形はテーパー状受け面bに沿う変形で、バンパは内方へ 変形することになり、上下方向における変形量は小さい。したがって、バンパ5 によるピストン2停止位置は従来とほとんど変りがないので、打ち込み力は安定 に保持される。As described above, the impact piston 2 is cushioned by the bumper 5 in two stages, and the amount of deformation of the bumper 5 for cushioning is longer than in the conventional case, so that the impact noise is reduced. According to the experiment, it was confirmed that the impact noise was reduced by about 5%. In order to achieve the same level of sound reduction effect with the conventional structure, a bumper with double the volume is required. However, the deformation due to the initial buffering is the deformation along the tapered receiving surface b, which means that the bumper is deformed inward, and the amount of deformation in the vertical direction is small. Therefore, the stop position of the piston 2 by the bumper 5 is almost the same as the conventional one, and the driving force is stably maintained.
【図1】本考案に係る釘打機の衝撃緩衝装置の要部の断
面図である。FIG. 1 is a cross-sectional view of an essential part of a shock absorbing device for a nailing machine according to the present invention.
【図2】上記衝撃緩衝装置による緩衝態様説明図であ
る。FIG. 2 is an explanatory view of a shock absorbing mode by the shock absorbing device.
【図3】上記衝撃緩衝装置による緩衝態様説明図であ
る。FIG. 3 is an explanatory view of a shock absorbing mode by the shock absorbing device.
a 平坦状受け面 b テーパー状受け面 1 打撃シリンダ 2 打撃ピストン 4 ノーズ部 5 バンパ 5b 突起 a flat receiving surface b tapered receiving surface 1 striking cylinder 2 striking piston 4 nose portion 5 bumper 5b protrusion
───────────────────────────────────────────────────── フロントページの続き (72)考案者 内藤 恭裕 東京都中央区日本橋箱崎町6番6号 マツ クス株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Yasuhiro Naito 6-6 Hakozakicho, Nihombashi, Chuo-ku, Tokyo Max Co., Ltd.
Claims (2)
収容する打撃シリンダと、該打撃シリンダの下方に延設
されて前記打撃ピストンと一体に結合したドライバの摺
動を案内するとともに前記釘を収容するノーズ部とを有
し、前記ノーズ部の上端に打撃時の打撃ピストンを受け
るバンパを配置した釘打機において、 前記バンパの下面を受ける受け面を平坦状に形成し、該
平坦状受け面の外側にテーパー状の受け面を連続形成
し、前記バンパの下端外周部を前記テーパー状の受け面
で支持させ、且つ前記バンパの下面と平坦状受け面との
間に間隙をもたせて支持させたことを特徴とする釘打機
の衝撃緩衝装置。1. A striking cylinder slidably accommodating a striking piston for striking a nail, and guiding the sliding of a driver extending below the striking cylinder and integrally connected to the striking piston, and the nail. And a nose portion that accommodates a bumper that receives a striking piston at the time of striking at the upper end of the nose portion, wherein the receiving surface that receives the lower surface of the bumper is formed into a flat shape, A tapered receiving surface is continuously formed outside the receiving surface, the lower end outer peripheral portion of the bumper is supported by the tapered receiving surface, and a gap is provided between the lower surface of the bumper and the flat receiving surface. A shock absorber for a nailer characterized by being supported.
成し、該突起を前記平坦状受け面に当接させて前記バン
パを支持したことを特徴とする請求項1記載の釘打機の
衝撃緩衝装置。2. The impact of a nailing machine according to claim 1, wherein a projection protruding from a lower surface of the bumper is formed, and the projection is brought into contact with the flat receiving surface to support the bumper. Shock absorber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7050991U JPH0516162U (en) | 1991-08-08 | 1991-08-08 | Shock absorber for nailer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7050991U JPH0516162U (en) | 1991-08-08 | 1991-08-08 | Shock absorber for nailer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0516162U true JPH0516162U (en) | 1993-03-02 |
Family
ID=13433575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7050991U Pending JPH0516162U (en) | 1991-08-08 | 1991-08-08 | Shock absorber for nailer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0516162U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111059046A (en) * | 2019-12-30 | 2020-04-24 | 中国石油天然气股份有限公司 | Leather cup type damping pumping-assisting whole barrel pump and using method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51114784A (en) * | 1975-03-12 | 1976-10-08 | Signode Corp | Buffer device |
-
1991
- 1991-08-08 JP JP7050991U patent/JPH0516162U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51114784A (en) * | 1975-03-12 | 1976-10-08 | Signode Corp | Buffer device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111059046A (en) * | 2019-12-30 | 2020-04-24 | 中国石油天然气股份有限公司 | Leather cup type damping pumping-assisting whole barrel pump and using method thereof |
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