JPH02274478A - Nail puller - Google Patents
Nail pullerInfo
- Publication number
- JPH02274478A JPH02274478A JP9547689A JP9547689A JPH02274478A JP H02274478 A JPH02274478 A JP H02274478A JP 9547689 A JP9547689 A JP 9547689A JP 9547689 A JP9547689 A JP 9547689A JP H02274478 A JPH02274478 A JP H02274478A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- striking member
- space
- inner cylinder
- striking
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000190020 Zelkova serrata Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、板などに打ち付けられた釘を、その板などか
ら抜き取るための釘抜き機に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a nail puller for pulling out nails driven into a board or the like from the board or the like.
従来の技術
従来から、板などに釘を打ち付けるための釘打ち機は存
在するけれども、板などに打ち込まれた釘を抜き取るた
めの釘抜き機は存在しない。2. Description of the Related Art Conventionally, there have been nail guns for driving nails into boards and the like, but there have been no nail pullers for pulling out nails driven into boards and the like.
発明が解決しようとする課題
本発明は、板などに打ち込まれた釘を抜き取るための釘
抜き機を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a nail puller for pulling out nails driven into a board or the like.
課題を解決するための手段
本発明は、内筒と、
内情を外囲し、内筒の外周面との間に通路を形成する外
筒と、
内筒内に設けられるピストンと、
ピストンに、軸線方向に予め定める！！離だけ相互の変
位を可能にして、連結される打撃部材と、内筒内で、ピ
ストンに関して打撃部材の突出する方向とは逆方向にあ
る第１空間に、圧縮気体を供給し、かつその第１空間を
大気圧にする手段とを含み、
内筒には、ピストンの移動範囲の途中に、前記通路と連
通する連通孔が形成され、
前記通路は、内筒のピストンに関して打撃部材の突出す
る方向と同一方向にある第２空間に連通していることを
特徴とする釘抜き機である。Means for Solving the Problems The present invention provides: an inner cylinder; an outer cylinder surrounding the inner cylinder and forming a passage between the inner cylinder and the outer peripheral surface of the inner cylinder; a piston provided in the inner cylinder; Predetermined in the axial direction! ! supplying compressed gas to the connected striking member and a first space in the inner cylinder in a direction opposite to the direction in which the striking member projects with respect to the piston; a means for making one space atmospheric pressure; the inner cylinder has a communication hole that communicates with the passageway formed in the middle of the movement range of the piston; This nail pulling machine is characterized in that it communicates with a second space in the same direction as the nail pulling machine.
また本発明は、外筒の外周面には、連通孔を弾発的に覆
って内筒内から前記通路への圧縮気体の一方向の流れを
許容する逆止弁手段を設けることを特徴とする。The present invention is also characterized in that a check valve means is provided on the outer peripheral surface of the outer cylinder to elastically cover the communication hole and allow the compressed gas to flow in one direction from the inside of the inner cylinder to the passage. do.
作 用
本発明に従えば、第１空間に圧縮気体を供給することに
よって、ピストン、したがってそのピストンとともに打
撃部材が突出する。この打撃部材が突出することによっ
て、釘の打ち込まれた先端に、その釘の頭部に向けて、
衝撃力を与え、釘を板などから、釘の頭部に向けて打ち
、こうして釘を板などから抜き取ることができる。Function According to the present invention, by supplying compressed gas to the first space, the piston, and therefore the striking member together with the piston, protrudes. By protruding this striking member, it hits the tip of the nail where it is driven, towards the head of the nail.
By applying impact force and driving the nail from the board toward the head of the nail, it is possible to pull the nail out of the board.
釘を板などから抜き取った後に、その打撃部材を釘穴か
ら抜き取るために、第１空間に圧縮空気を供給する。こ
れによってその圧縮空気は第１空間から連通孔を経て通
路に導かれ、その通路から、第２空間に供給される。そ
の後、第１空間を大気圧にする。そのためこの第２空間
に供給された圧縮空気によって、ピストンは前記突出方
向とは逆方向、すなわち後方に変位する。これによって
ピストンは打撃部材に、突出方向の後方への衝撃力を与
える。この通路および第２空間内の圧縮気体は、わずか
な隙間を通って外部に漏洩し、第２空間の圧縮気体の圧
力は低下する。そこで次に再び、第１空簡に圧縮気体を
供給する。これによってピストンは打撃部材の突出方向
に変位し、打撃部材を突出方向前方に押圧するように衝
撃力を与える。After the nail is extracted from the board or the like, compressed air is supplied to the first space in order to extract the striking member from the nail hole. As a result, the compressed air is guided from the first space to the passage through the communication hole, and is supplied from the passage to the second space. After that, the first space is brought to atmospheric pressure. Therefore, the compressed air supplied to the second space causes the piston to be displaced in a direction opposite to the projecting direction, that is, backward. As a result, the piston applies a rearward impact force to the striking member in the protrusion direction. The compressed gas in this passage and the second space leaks to the outside through a small gap, and the pressure of the compressed gas in the second space decreases. Then, compressed gas is supplied to the first air carrier again. As a result, the piston is displaced in the direction in which the striking member protrudes, and applies an impact force so as to press the striking member forward in the projecting direction.
ピストンが打撃部材の突出方向後方の位置にあるときに
、連通孔が第１空間に臨んでいるように構成することに
よって、第１空間に圧縮空気を与えると、その圧縮空気
は連通孔を介して通路および第２空間に導かれるけれど
も、その連通孔の通路断面積などを適切に選んで、第２
空間の圧力上昇速度が第１空間の圧力上昇速度に比べて
小さいように設定することによって、上述のようにピス
トンを前記突出方向前方に変位させることが可能である
。By configuring the communication hole to face the first space when the piston is at the rear position in the direction of protrusion of the striking member, when compressed air is supplied to the first space, the compressed air passes through the communication hole. However, by appropriately selecting the passage cross-sectional area of the communication hole, etc.
By setting the rate of pressure increase in the space to be smaller than the rate of pressure increase in the first space, it is possible to displace the piston forward in the projecting direction as described above.
このようにして第１空間に圧縮気体を断続的に供給し、
ピストンを打撃部材と相対的にその打撃部材の突出方向
前方および後方に往復変位を行わせ、打撃部材に、その
軸線方向に沿う往復の衝撃力を与える。これによって打
撃部材の外周面と、板などに形成されている釘穴の内周
面との間に軸線方向のずれが生じ、ゆるみが生し、打撃
部材を釘穴から抜き取ることができる。In this way, compressed gas is intermittently supplied to the first space,
The piston is reciprocated forward and backward relative to the striking member in the direction in which the striking member projects, thereby applying a reciprocating impact force along the axial direction of the striking member. This causes an axial deviation between the outer circumferential surface of the striking member and the inner circumferential surface of the nail hole formed in the plate or the like, resulting in loosening, allowing the striking member to be pulled out from the nail hole.
実施例 第１図は、本発明の一実施例の断面図である。Example FIG. 1 is a sectional view of one embodiment of the present invention.
この釘抜き機１は、直円筒状の内筒２と、その内筒２を
外囲する外１！Ｊ３とを有する。内筒２の外周面と外筒
３の外周面との間には、通路４が形成される。内筒２内
にはピストン５が設けられ、このピストン５は内筒２の
軸線方向（第１図左右方向）に変位自在である。内筒２
は外筒３に固定されており、その外筒３にはキャップ６
がボルト７によって気密に固定される。ピストン５には
、打撃部材８が連結されている。この内筒２に、ピスト
ン５に閏・して打撃部材８の突出する方向９とは逆方向
（第１図の右方）には、第１空ｒｒｊＪ１０が形成され
る。この第１空間１０には、閉口１１および通路１２を
経て手動操作される切換弁１３から、圧縮気体である圧
縮空気が供給され、またこの切換弁１３によって通路１
２したがって第１空間１０が大気圧とされる。切換弁１
３は、押圧操作部１４を押圧操作することによって、圧
縮空気を通路１２、したがって第１空間１０に大量に急
速に供給し、またその操作部１４から手を離すことによ
って、通路１２したがって第１空間１０を、急速に大気
圧とする。This nail puller 1 has an inner tube 2 in the shape of a right cylinder, and an outer tube 1 surrounding the inner tube 2! J3. A passage 4 is formed between the outer peripheral surface of the inner cylinder 2 and the outer peripheral surface of the outer cylinder 3. A piston 5 is provided within the inner cylinder 2, and the piston 5 is freely displaceable in the axial direction of the inner cylinder 2 (horizontal direction in FIG. 1). Inner cylinder 2
is fixed to the outer cylinder 3, and a cap 6 is attached to the outer cylinder 3.
is airtightly fixed with bolts 7. A striking member 8 is connected to the piston 5 . A first cavity rrjJ10 is formed in the inner cylinder 2 in a direction opposite to the direction 9 in which the striking member 8 projects from the piston 5 (to the right in FIG. 1). Compressed air, which is a compressed gas, is supplied to this first space 10 from a switching valve 13 that is manually operated through a closing port 11 and a passage 12.
2. Therefore, the first space 10 is at atmospheric pressure. Switching valve 1
3 rapidly supplies a large amount of compressed air to the passage 12 and therefore the first space 10 by pressing the pressing operation part 14, and by releasing the hand from the operation part 14, the passage 12 and therefore the first space Space 10 is rapidly brought to atmospheric pressure.
打撃部材８は、打撃欅１５と、本体１６と、ピストン５
の挿通孔１７を緩やかに挿通する軸部１８と、ストッパ
１９とを有する。これによって、ピストン５と打撃部材
８の軸部１８とは、軸線方向く第１図の左右方向）に距
Ｍｅ１だけ、変位が許容される。ピストン５には、本体
１６に形成されている７ランノ部２０が嵌り込む凹所２
１が形成され、またストッパ１９が嵌り込む凹所２２が
形成され、これによってフランジ部２０とピストン５と
の端面が面一となってウレタンなどの材料から成る緩衝
部材２３に面接触することができ、またピストン５とス
トッパ１９との各端面が一平面となってウレタンなどの
材料から成る緩衝部材２４に面接触し、こうして衝撃力
のＭｌｌｌが、ピストン５および打撃部材８の最端位置
で行われる。The striking member 8 includes a striking keyaki 15, a main body 16, and a piston 5.
It has a shaft portion 18 that is gently inserted through the insertion hole 17 of the holder, and a stopper 19. As a result, the piston 5 and the shaft portion 18 of the striking member 8 are allowed to be displaced by a distance Me1 in the axial direction (left-right direction in FIG. 1). The piston 5 has a recess 2 into which a seven-run no. 20 formed in the main body 16 fits.
1 is formed, and a recess 22 into which the stopper 19 fits is formed, so that the end surfaces of the flange portion 20 and the piston 5 are flush with each other and come into surface contact with a buffer member 23 made of a material such as urethane. In addition, each end surface of the piston 5 and the stopper 19 becomes one plane and comes into surface contact with the buffer member 24 made of a material such as urethane, so that the impact force Mll is reduced at the extreme end positions of the piston 5 and the striking member 8. It will be done.
内筒２には、ピストン５の移動範囲の途中に通路４と連
通する連通孔２６が形成される。この連通孔２６を弾発
的に覆う環状のゴムなどの材料がら成る帯体２７が、内
筒２の外周面に設けられる。A communication hole 26 communicating with the passage 4 is formed in the inner cylinder 2 in the middle of the movement range of the piston 5. An annular band 27 made of a material such as rubber and elastically covering the communication hole 26 is provided on the outer peripheral surface of the inner cylinder 2.
これによって内筒２の第１空間１ｏから通路４への圧縮
空気の一方向の流れが許容され、通路４から第１空間１
０への空気の流れが阻止されて、逆止弁としての機能が
達成される。This allows compressed air to flow in one direction from the first space 1o of the inner cylinder 2 to the passage 4, and from the passage 4 to the first space 1
0 is blocked, and the function as a check valve is achieved.
内筒２にはまた、ピストン５に関して打撃部材８の突出
する方向９と同一方向にある第２空間２８に連通する接
続孔２９が形成される。この接続孔２つは周方向に複数
個形成され、流路断面積の総和が大きく、したがって通
路４と第２空間２８との圧力はほぼ同一である。前述の
連通孔２６はまた、内筒２の周方向に間隔をあけて複数
個形成されていてもよく、それらの連通孔２６の流路断
面積の総和は比較的小さく、したがって第１空間１０に
、圧縮空気が供給されたとき、その第１空間１０におけ
る圧縮空気の圧力上昇する速度は、通路４および第２空
間２８における圧力上昇する速度に比べて大きく、第１
空間が大気圧とされたときの圧力下降についても同様で
ある。The inner cylinder 2 is also formed with a connecting hole 29 that communicates with the second space 28 in the same direction as the direction 9 in which the striking member 8 projects with respect to the piston 5 . A plurality of these two connecting holes are formed in the circumferential direction, and the total cross-sectional area of the flow passages is large, so that the pressures in the passage 4 and the second space 28 are almost the same. The above-mentioned communication holes 26 may also be formed in plural numbers at intervals in the circumferential direction of the inner cylinder 2, and the sum of the flow passage cross-sectional areas of these communication holes 26 is relatively small, so that the first space 10 When compressed air is supplied to the first space 10, the speed at which the pressure of the compressed air increases in the first space 10 is greater than the speed at which the pressure increases in the passage 4 and the second space 28.
The same applies to the pressure drop when the space is brought to atmospheric pressure.
第２空間２８は、外筒３に固定されている端板３０の打
撃棒１５を挿通する掃通孔３１などのわずかな隙間を介
して小流量で漏洩する。したがって切換弁１３の操作部
１４を押圧操作しない状筈が継続すると、第２空間２８
は大気圧となる。前述のように切換弁１３は操作部１４
が操作されないとき、通路１２を大気に開放している。The second space 28 leaks at a small flow rate through a small gap such as a sweep hole 31 through which the striking rod 15 of the end plate 30 fixed to the outer cylinder 3 is inserted. Therefore, if the operation part 14 of the switching valve 13 is not pressed, the second space 28
becomes atmospheric pressure. As mentioned above, the switching valve 13 is connected to the operating section 14.
When not operated, the passageway 12 is open to the atmosphere.
上述の第１図は、ピストン５および打撃部材８が突出方
向９の前方最端位置にある状態を示し、第２目は、ピス
トン５および打撃部材８が突出方向９の後方最端位置に
ある状芒を示す。The above-mentioned FIG. 1 shows a state in which the piston 5 and the striking member 8 are at the frontmost position in the projecting direction 9, and the second figure shows a state in which the piston 5 and the striking member 8 are at the rearmost position in the projecting direction 9. Indicates the shape of the awn.
第２図のようにピストン５および打撃部材８が突出方向
９の後方最端位置にある状態で、切換弁１３の押圧操作
部１４を押圧操作すると、通路１２から第１空間１０に
圧縮空気が供給され・、そのためピストン５は第２図の
左方に変位する。これによってピストン５と打撃部材８
の本体１６とが当接し、第３０に示されるように、ピス
トン５によって、打撃部材８が突出方向９に高速度で変
位する。ピストン５が連通孔２６を通過して第４因の状
等になると、第１空間ｌｏ内の圧縮空気は連通孔２６か
ら環状帯体２７の内周面と内筒２の外周面との間の隙間
を経て通路４を通り、接続孔２９から第２空間２８に入
り込む、この連通孔２６の通路断面積の総和は、前述の
ように小さいので、ピストン５および打撃部材８は第１
空間１ｏの圧縮空気の圧力によって、またそのピストン
５および打撃部材８の慣性力によって大きな速度で、突
出方向９に進み、その打撃部材８の打撃棒１５が釘Ａの
軸部の先端Ａ１に当接して、釘Ａを板３３からその釘Ａ
の頭部Ａ２に向けて衝撃力を与えて釘Ａが板３３から抜
ける方向にカを与える。As shown in FIG. 2, when the pressing operation part 14 of the switching valve 13 is pressed while the piston 5 and the striking member 8 are at the rearmost position in the protrusion direction 9, compressed air flows from the passage 12 into the first space 10. is supplied, so that the piston 5 is displaced to the left in FIG. As a result, the piston 5 and the striking member 8
The striking member 8 is displaced at a high speed in the projecting direction 9 by the piston 5, as shown in the 30th figure. When the piston 5 passes through the communication hole 26 and enters the fourth state, the compressed air in the first space lo flows from the communication hole 26 between the inner peripheral surface of the annular band 27 and the outer peripheral surface of the inner cylinder 2. The sum of the passage cross-sectional areas of the communication hole 26 which passes through the passage 4 through the gap and enters the second space 28 from the connection hole 29 is small as described above, so the piston 5 and the striking member 8 are
Due to the pressure of the compressed air in the space 1o and the inertial force of the piston 5 and the striking member 8, it moves at a high speed in the projecting direction 9, and the striking rod 15 of the striking member 8 hits the tip A1 of the shank of the nail A. touching the nail A from the board 33
An impact force is applied toward the head A2 of the nail A, and a force is applied in the direction in which the nail A comes out of the plate 33.
打撃部材８の打撃欅１５が釘Ａの先端Ａ１に当接したと
き、またはピストン５および打撃部材８の前方最端位置
でＭ筒部材２３に衝突したとき、切換弁１３の操作部１
４がら手を離すと、この切換弁１３によって通路１２、
したがって第１空間１０が大気圧とされる。このとき第
２空間２８は、圧縮空気によって高圧力となっているの
で、ピストン５は、突出方向９の逆方向（第４１１２１
の右方）に変位し、ピストン５がストッパ１９に当接し
、ピストン５と打撃部材８とは、Ｍ街部材２４に衝突す
るまで移動する。ピストン５およびストッパ１９が緩衝
部材２４に陽炎する直前付近では、第２空間２８は負圧
となり、緩衝部材２４との衝撃力は小さい、そこで再び
切換弁１３の操ｆヤ部１４を押圧操作することによって
、圧縮空気が第１空間１０に供給され、第２図の状態か
ら、ピストン５および打撃部材８が突出方向９の前方に
移動する。When the striking key 15 of the striking member 8 comes into contact with the tip A1 of the nail A, or when it collides with the M cylinder member 23 at the frontmost position of the piston 5 and the striking member 8, the operation part 1 of the switching valve 13
When you release your hand from 4, this switching valve 13 opens the passage 12,
Therefore, the first space 10 is at atmospheric pressure. At this time, the second space 28 is under high pressure due to the compressed air, so the piston 5 moves in the opposite direction of the protrusion direction 9 (the 41121st
(to the right), the piston 5 comes into contact with the stopper 19, and the piston 5 and the striking member 8 move until they collide with the M street member 24. In the vicinity immediately before the piston 5 and stopper 19 cause heat haze on the buffer member 24, the second space 28 becomes negative pressure, and the impact force with the buffer member 24 is small, so the operator part 14 of the switching valve 13 is pressed again. As a result, compressed air is supplied to the first space 10, and the piston 5 and the striking member 8 move forward in the projecting direction 9 from the state shown in FIG.
外１！Ｊ３の端板３０には、案内部材３３が固定される
。この案内部材３３には、打撃部材８の打撃環１５を案
内する案内孔３４が形成されている。Outside 1! A guide member 33 is fixed to the end plate 30 of J3. A guide hole 34 for guiding the striking ring 15 of the striking member 8 is formed in this guide member 33 .
このような構成を有する本件釘抜き機１を用いて、第５
図を参照して釘Ａを板２３から抜き取る動作を説明する
。第５図（１）で示されるように、板２３から突出して
いる釘Ａの先端Ａ１を案内部材３３の案内孔３４内に入
れて、釘Ａの軸部を一直線状に矯正して第５１１ｍ（２
＞の状態とする。この第５［ｊＵ（２＞で示す状態では
、ビス）−ン５は第２目に示されるように、ｔｌＩ街部
材２４に当接しており、またはそのＩ！衝部材２４の近
傍にある。そこで前述のように切換弁１３の操作部１４
を押圧して圧縮空気を供給することによって、打撃環１
５は釘Ａの先端Ａ１を打撃して、釘Ａをその頭部Ａ２が
前方となるようにして釘Ａを突出方向１９に突出して、
参照符３５で示すように抜き出す。Using the present nail puller 1 having such a configuration, the fifth
The operation of extracting the nail A from the plate 23 will be explained with reference to the drawings. As shown in FIG. 5(1), the tip A1 of the nail A protruding from the plate 23 is inserted into the guide hole 34 of the guide member 33, and the shaft portion of the nail A is straightened into a straight line. (2
> state. In the state shown by this fifth [jU(2>), the screw 5 is in contact with the tlI street member 24, or its I! It is located near the impact member 24. Therefore, as mentioned above, the operation part 14 of the switching valve 13
By pressing and supplying compressed air, the striking ring 1
5 hits the tip A1 of the nail A to project the nail A in the projecting direction 19 with the head A2 of the nail A facing forward;
It is extracted as indicated by reference numeral 35.
このとき、打撃環１５は前述の第１図および第５図〈３
）で示されるように板２３の釘Ａが貫通して釘穴３６に
嵌り込んだ状態となる。At this time, the striking ring 15 is
), the nail A of the plate 23 penetrates and fits into the nail hole 36.
打撃環１５を釘穴３６から抜き出すために、切換弁１３
の操作部１４を押圧操作して第１空間１０に圧縮空気を
供給して５第２空間２８の圧力を高め、次に操作部１４
から手を離して第１空間１０を、瞬時に大気圧とする。In order to pull out the striking ring 15 from the nail hole 36, the switching valve 13 is
Press the operating section 14 of the 5 to supply compressed air to the first space 10 to increase the pressure of the second space 28, and then press the operating section 14 of
When the first space 10 is released, the first space 10 is instantly brought to atmospheric pressure.
これによってピストン５は第２空間２８の圧縮空気によ
って、第１図の右方に距離１１だけ変位し、ピストン５
がストッパ１９に衝突する。これによって打撃部材８に
は、突出方向９とは逆方向の後方の衝撃力が作用する。As a result, the piston 5 is displaced by the distance 11 to the right in FIG. 1 by the compressed air in the second space 28, and the piston 5
collides with the stopper 19. As a result, a rear impact force in a direction opposite to the protruding direction 9 acts on the striking member 8 .
すなわち打撃環１５は、釘穴３６から抜ける方向の衝撃
力が与えられる。That is, an impact force is applied to the striking ring 15 in the direction in which it comes out of the nail hole 36.
再び切換弁１３の操作＄１４を押圧操作して、第１空間
１０に圧縮空気を供給する。これによってピストン５は
、距ｍｔ ｉだけ変位し、打撃部材８のフランジ部２０
に衝突する。そのため打撃部材８には、突出方向９の力
が作用する。その後、操作部１４から手を離して第１空
間１０を大気圧とすると、ピストン５は上述のように第
２空間２８に残存している圧縮空気によって突出方向９
の後方に変位し、ストッパ１９にあたって打撃部材８に
突出方向９の後方の力が作用する。このような動作を繰
り返して、打撃環１５にその軸線方向前後の往復の衝撃
力を作用し、打撃環１５の外周面と釘穴３６の内周面と
の接触力を禮める。こうして釘穴３６から打撃環１５を
容易に抜き取ることができる。Press operation $14 of the switching valve 13 again to supply compressed air to the first space 10. As a result, the piston 5 is displaced by a distance mt i, and the flange portion 20 of the striking member 8
collide with Therefore, a force in the protruding direction 9 acts on the striking member 8 . After that, when the hand is released from the operating part 14 and the first space 10 is set to atmospheric pressure, the piston 5 is moved in the protruding direction 9 by the compressed air remaining in the second space 28 as described above.
When the impact member 8 hits the stopper 19, a rearward force in the projecting direction 9 acts on the striking member 8. By repeating these operations, a reciprocating impact force is applied to the striking ring 15 in the axial direction, thereby reducing the contact force between the outer circumferential surface of the striking ring 15 and the inner circumferential surface of the nail hole 36. In this way, the striking ring 15 can be easily removed from the nail hole 36.
もしも仮に、前述の第５図く３）で示されるように打撃
環１５が釘穴３６に強固に嵌り込んだ状態で、無理に打
撃環１５を板２３から抜き取ろうとすると、打撃環１５
に無理な力が作用して曲がってしまったり、あるいはま
た、その打撃環１５が折れたりするおそれがある０本発
明によれば、打撃環１５を釘穴３６から円滑に抜き取る
ことができる。If you try to forcibly remove the striking ring 15 from the plate 23 with the striking ring 15 firmly fitted into the nail hole 36 as shown in Figure 5 (3) above, the striking ring 15 will
According to the present invention, the striking ring 15 can be smoothly removed from the nail hole 36.
環状帯体２７の逆止弁機能によって、連通孔２６を介し
て第１空間１０から通路４および第２空ｍ ２８に導か
れた圧縮空気は、その第１空間１０が、その後に、大気
圧となった後にも、第２空閘２８に残存され、そのため
ピストン５および打撃部材８を突出方向９の後方（第１
図の右方）に押し戻す作用を確実に達成することができ
る。逆止弁手段は、他の構造であってもよい。Due to the check valve function of the annular band body 27, the compressed air guided from the first space 10 to the passage 4 and the second space m28 via the communication hole 26, the first space 10 is then brought to atmospheric pressure. , the piston 5 and the striking member 8 remain in the second air lock 28 even after the
It is possible to reliably achieve the effect of pushing the material back to the right side in the figure. The check valve means may be of other constructions.
発明の効果
以上のように本発明によれば、板などに打ち込まれた釘
を、その先端側から打撃部材によって衝撃力を与えて釘
の頭部側に抜き取ることができる。Effects of the Invention As described above, according to the present invention, a nail driven into a board or the like can be extracted from the head side of the nail by applying impact force with the impact member from the tip side thereof.
また、この打撃部材が板などの釘穴に嵌り込んだとき、
ピストンと打撃部材とは軸線方向に予め定める距離だけ
相互の変位が可能となっているので、打撃部材にその軸
線方向に沿う往復の衝撃力を与えて、打撃部材を釘穴か
ら抜き出すことが可能になる。Also, when this striking member gets stuck in a nail hole in a board, etc.
Since the piston and the striking member can be mutually displaced by a predetermined distance in the axial direction, it is possible to apply a reciprocating impact force along the axial direction to the striking member and pull the striking member out of the nail hole. become.
第１Ｂはピストン５および打撃部材８が突出方向９の前
方最端位置にある状態を示す断面図、第２図はピストン
５および打撃部材８が突出方向９の後方最端位置にある
状態を示す断面図、第３図はピストン５および打撃部材
８が前進している途中の状態を示す断面口、第４図はピ
ストン５および打撃部材８がさらに前進している途中の
状態を示す断面口、第５図は釘Ａを板２３から抜き取る
ときの動作を説明するための断面図である。
１・・・釘抜き機、２・−・内筒、３・・・外筒、４・
−・通路、５・・・ピストン、８・・・打撃部材、１０
・・・第１空間、１３・・・切換弁、１４・・−操作部
、１５・・・打撃棒、２６・・・連通孔５２７・・・環
状帯体、２８・・・第２空間、２９・・・接続孔
代理人 弁理士 画数 圭一部1B is a sectional view showing a state in which the piston 5 and the striking member 8 are at the frontmost position in the protruding direction 9, and FIG. 2 is a sectional view showing a state in which the piston 5 and the striking member 8 are in the rearmost position in the projecting direction 9. 3 is a cross-sectional view showing a state in which the piston 5 and the striking member 8 are moving forward; FIG. 4 is a cross-sectional view showing a state in which the piston 5 and the striking member 8 are moving further; FIG. 5 is a sectional view for explaining the operation when pulling out the nail A from the plate 23. 1... Nail puller, 2... Inner cylinder, 3... Outer cylinder, 4...
-・Passway, 5... Piston, 8... Hitting member, 10
...First space, 13...Switching valve, 14...-Operation unit, 15...Blow rod, 26...Communication hole 527...Annular band body, 28...Second space, 29... Connection hole agent Patent attorney Keiichi
Claims (2)
筒と、 内筒内に設けられるピストンと、 ピストンに、軸線方向に予め定める距離だけ相互の変位
を可能にして、連結される打撃部材と、内筒内で、ピス
トンに関して打撃部材の突出する方向とは逆方向にある
第１空間に、圧縮気体を供給し、かつその第１空間を大
気圧にする手段とを含み、 内筒には、ピストンの移動範囲の途中に、前記通路と連
通する連通孔が形成され、 前記通路は、内筒のピストンに関して打撃部材の突出す
る方向と同一方向にある第２空間に連通していることを
特徴とする釘抜き機。(1) An inner cylinder, an outer cylinder that surrounds the inner cylinder and forms a passage between it and the outer peripheral surface of the inner cylinder, a piston provided in the inner cylinder, and a predetermined distance from the piston in the axial direction. supplying compressed gas to a striking member connected thereto and a first space in the inner cylinder in a direction opposite to the direction in which the striking member projects with respect to the piston; a means for setting the pressure to atmospheric pressure, and the inner cylinder has a communication hole that communicates with the passageway formed in the middle of the movement range of the piston, and the passageway is arranged in a direction in which the striking member projects with respect to the piston of the inner cylinder. A nail puller characterized by communicating with a second space in the same direction.
内から前記通路への圧縮気体の一方向の流れを許容する
逆止弁手段を設けることを特徴とする特許請求の範囲第
１項記載の釘抜き機。(2) A patent characterized in that a check valve means is provided on the outer peripheral surface of the outer cylinder to resiliently cover the communication hole and allow compressed gas to flow in one direction from the inner cylinder to the passage. A nail puller according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9547689A JPH02274478A (en) | 1989-04-14 | 1989-04-14 | Nail puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9547689A JPH02274478A (en) | 1989-04-14 | 1989-04-14 | Nail puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02274478A true JPH02274478A (en) | 1990-11-08 |
Family
ID=14138680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9547689A Pending JPH02274478A (en) | 1989-04-14 | 1989-04-14 | Nail puller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02274478A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0413273U (en) * | 1990-05-24 | 1992-02-03 | ||
| JPH04135184A (en) * | 1990-09-25 | 1992-05-08 | Tachikawa Pin Seisakusho:Kk | Nail draw-off device and draw-off method for used nail |
| JPH04125577U (en) * | 1991-05-01 | 1992-11-16 | 兼松デユオフアスト株式会社 | nail removal tool |
| CN103507035A (en) * | 2012-06-26 | 2014-01-15 | 施俊兆 | Nail dismounting device |
-
1989
- 1989-04-14 JP JP9547689A patent/JPH02274478A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0413273U (en) * | 1990-05-24 | 1992-02-03 | ||
| JPH04135184A (en) * | 1990-09-25 | 1992-05-08 | Tachikawa Pin Seisakusho:Kk | Nail draw-off device and draw-off method for used nail |
| JPH04125577U (en) * | 1991-05-01 | 1992-11-16 | 兼松デユオフアスト株式会社 | nail removal tool |
| CN103507035A (en) * | 2012-06-26 | 2014-01-15 | 施俊兆 | Nail dismounting device |
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