TWI729809B

TWI729809B - Vibration damping structure of pneumatic hammer

Info

Publication number: TWI729809B
Application number: TW109116006A
Authority: TW
Inventors: 孫永勇
Original assignee: 大里興業股份有限公司
Priority date: 2020-01-22
Filing date: 2020-05-14
Publication date: 2021-06-01
Also published as: TW202128375A

Abstract

一種氣動鎚之減振構造，包括有一具凹室之握柄，此凹室具有一底壁；握柄設有一連接至凹室之進氣通道，此進氣通道中設有一控制氣流通過的控制閥。凹室固定有一外管，而一內管可活動地容置於外管中，且以一筒蓋伸於凹室中。內管中設有一可動的鎚體及一控制鎚體作動的進氣閥，且內管設有一使進氣通道連通至進氣閥之穿孔。筒蓋具有一端壁，其與底壁之間形成有一氣室，筒蓋設有一密接凹室之氣密封件。進氣通道與氣室以一連接通道連通，使高壓空氣能進入氣室。 A vibration damping structure of a pneumatic hammer, comprising a handle with a recessed chamber, the recessed chamber has a bottom wall; the handle is provided with an air inlet passage connected to the recessed chamber, and a control for controlling the passage of air flow is provided in the air inlet passage valve. An outer tube is fixed in the cavity, and an inner tube is movably contained in the outer tube, and a cylinder cover extends into the cavity. The inner pipe is provided with a movable hammer and an intake valve for controlling the action of the hammer, and the inner pipe is provided with a perforation connecting the intake passage to the intake valve. The cylinder cover has one end wall, and an air chamber is formed between the cylinder cover and the bottom wall, and the cylinder cover is provided with an air seal that is tightly connected to the recessed chamber. The air inlet channel and the air chamber are connected by a connecting channel, so that high-pressure air can enter the air chamber.

Description

氣動鎚之減振構造 Vibration damping structure of pneumatic hammer

本發明與氣動鎚有關，尤指一種氣動鎚之減振構造。 The present invention relates to a pneumatic hammer, and particularly refers to a vibration damping structure of a pneumatic hammer.

第4圖所示者為習知的槍形氣動鎚，其具有一槍柄部81及一槍管部82，槍柄部81中設有進氣通道83，而槍管部82中設有一進氣閥84及一可動的鎚體85，該鎚體85可被高壓氣體驅動而在槍管部82中往復移動以供執行作業之用。 Figure 4 shows a conventional gun-shaped pneumatic hammer, which has a handle portion 81 and a barrel portion 82, the handle portion 81 is provided with an air inlet passage 83, and the barrel portion 82 is provided with an inlet The air valve 84 and a movable hammer 85 can be driven by high-pressure gas to reciprocate in the barrel portion 82 for performing operations.

氣動鎚在使用的過程中會因該鎚體85的往復位移而形成振動，長時間使用下對使用者握持的手掌有不良的影響，尤其擊打力道愈強大的氣動鎚，其所造成的振動也愈大，對使用者造成的傷害也愈大，故必須加以改良。上述習知的氣動鎚結構中，在該槍管部82之後端設有一空間86，並於其中設置一具彈性的橡膠軟塊87及一彈簧88，當該鎚體85向後移動而使槍管部82產生振動時，可藉由橡膠軟塊87及彈簧88頂住，藉此達到減振之效果。 The pneumatic hammer will vibrate due to the return movement of the hammer body 85 during use, which will adversely affect the palm held by the user under long-term use, especially the pneumatic hammer with the stronger striking force. The greater the vibration, the greater the damage to the user, so it must be improved. In the above-mentioned conventional pneumatic hammer structure, a space 86 is provided at the rear end of the barrel portion 82, and an elastic rubber soft block 87 and a spring 88 are arranged therein. When the hammer body 85 moves backward, the barrel When the part 82 vibrates, it can be supported by the rubber soft block 87 and the spring 88, thereby achieving the effect of vibration reduction.

惟該鎚體85的作動頻率高達每分鐘數千次之譜，即該橡膠軟塊87每分鐘必須承受數千次壓縮/伸張的變形，由於材料性質的先天限制以致其回復原狀的動作速度不夠快，即橡膠軟塊87不能在每次被壓縮後而在下一次被壓縮前立即伸張回復原狀，則限縮減振的效果。此外，該鎚體85的高頻作動亦將迅速造成該橡膠軟塊87的彈性疲乏而失去彈性，導致無法再繼續產生減振效果。 However, the operating frequency of the hammer body 85 is as high as thousands of times per minute, that is, the rubber soft block 87 must withstand thousands of compression/extension deformations per minute. Due to the inherent limitations of the material properties, the speed of its return to its original state is not enough. Fast, that is, the rubber soft block 87 cannot be stretched back to its original shape immediately after each compression but before the next compression, which limits the effect of reducing vibration. In addition, the high frequency of the hammer 85 Actuation will also quickly cause the elasticity of the rubber soft block 87 to become fatigued and lose its elasticity, resulting in the inability to continue to produce the damping effect.

又第5圖所示者為另一種習知的氣動鎚，其與前述槍形氣動鎚之結構具有不同的形狀，藉由其柄部91的直筒形狀，可在某些特定的使用場合提供較方便順手的操作。 Also shown in Figure 5 is another conventional pneumatic hammer, which has a different shape from the structure of the aforementioned gun-shaped pneumatic hammer. With the straight shape of the handle 91, it can be used in some specific occasions. Convenient and smooth operation.

然而此習知的氣動鎚正因其形狀之故，進氣通道93位於柄部91及管部92之正後方，以致沒有空間可用於鎚體94往復移動的緩衝作用，因而在使用時會產生振動。 However, due to the shape of the conventional pneumatic hammer, the air intake passage 93 is located directly behind the handle 91 and the pipe 92, so that there is no space for the cushioning effect of the reciprocating movement of the hammer body 94, so it will produce vibration.

本發明之主要目的在於提供一種氣動鎚之減振構造，其在槍體中以高壓空氣注滿一氣室，以供鎚體在作動中的緩衝減振之用，具有不會因發生彈性疲乏而失去減振效果之功效。 The main purpose of the present invention is to provide a vibration damping structure for a pneumatic hammer, which fills an air chamber with high-pressure air in the gun body for buffering and damping vibration of the hammer body during operation. Lose the effect of damping effect.

為達前述之目的，本發明提供一種氣動鎚之減振構造，其包括有：一握柄，其具有一凹室，該凹室具有一開口端及一底壁；該握柄設有一連接至該凹室之進氣通道，其中該進氣通道中設有一控制氣流通過的控制閥；一外管，其固定於該凹室之開口端；一內管，其可活動地容置於該外管中，包括有相連接之一槍管及一伸於該凹室中之筒蓋，其中該槍管中設有一可動的鎚體，該筒蓋中設有一控制該鎚體作動的進氣閥，且該筒蓋設有一使該進氣通道連通至該進氣閥之穿孔；該筒蓋具有一端壁，其與該底壁之間形成有一氣室，其中該筒蓋設有一密接該凹室之第一氣密封件；一連接通道，其連通該進氣通道與該氣室，使高壓空氣能進入該氣室。 In order to achieve the foregoing objective, the present invention provides a vibration damping structure for a pneumatic hammer, which includes: a handle with a cavity, the cavity has an open end and a bottom wall; the handle is provided with a connection to The air inlet passage of the recessed chamber, wherein the air inlet passage is provided with a control valve for controlling the passage of airflow; an outer tube fixed to the open end of the recessed chamber; and an inner tube movably accommodated in the outer tube The tube includes a barrel connected to it and a barrel cover extending in the recess, wherein a movable hammer is provided in the barrel, and an air inlet valve controlling the action of the hammer is provided in the barrel cover, And the cylinder cover is provided with a perforation that allows the air inlet passage to communicate with the intake valve; the cylinder cover has an end wall, and an air chamber is formed between the cylinder cover and the bottom wall, wherein the cylinder cover is provided with an air chamber that is tightly connected to the recessed chamber The first air seal; a connecting channel, which connects the air inlet channel and the air chamber, so that high-pressure air can enter the air chamber.

於一實施例中，定義該凹室沿一軸向延伸，該軸向與該進氣通道的延伸方向之間形成一夾角。 In one embodiment, the recess is defined to extend along an axial direction, and an included angle is formed between the axial direction and the extending direction of the air inlet passage.

較佳地，該連接通道設於該握柄中，且位於該進氣通道之一側；該進氣通道於該連接通道之一相對側設有一與該連接通道同向延伸之施工孔，且該施工孔以一第二氣密封件封閉。 Preferably, the connecting channel is provided in the handle and located on one side of the air inlet channel; the air inlet channel is provided with a construction hole extending in the same direction as the connecting channel on an opposite side of the air inlet channel, and The construction hole is closed with a second air seal.

於另一實施例中，定義該凹室沿一軸向延伸，該軸向與該進氣通道的延伸方向平行。 In another embodiment, the recess is defined to extend along an axial direction, and the axial direction is parallel to the extending direction of the intake passage.

較佳地，該連接通道連接該進氣通道之接口位於該控制閥之上游處。 Preferably, the interface connecting the connecting passage to the intake passage is located upstream of the control valve.

較佳地，該氣室中設有一頂推該端壁之彈簧。 Preferably, a spring for pushing the end wall is provided in the air chamber.

而本發明之上述目的與優點，不難從下述所選用實施例之詳細說明與附圖中獲得深入了解。 It is not difficult to obtain an in-depth understanding of the above-mentioned objects and advantages of the present invention from the detailed description of the selected embodiments and the accompanying drawings.

1:握柄 1: grip

11:凹室 11: Alcove

111:開口端 111: open end

12:底壁 12: bottom wall

13:進氣通道 13: intake channel

14:控制閥 14: Control valve

15:按鈕 15: Button

16:施工孔 16: Construction hole

17:第二氣密封件 17: The second air seal

2:外管 2: Outer tube

3:內管 3: inner tube

31:槍管 31: Barrel

32:筒蓋 32: Cylinder cover

321:穿孔 321: Piercing

322:端壁 322: End Wall

323:第一氣密封件 323: The first air seal

324:耐磨支撐環件 324: Wear-resistant support ring

33:鎚體 33: Hammer

34:進氣閥 34: intake valve

4:連接通道 4: connection channel

41:接口 41: Interface

5:氣室 5: Air chamber

6:彈簧 6: Spring

71:握柄 71: Grip

72:凹室 72: Alcove

721:底壁 721: bottom wall

722:筒件 722: Tube

723:第一環牆 723: First Ring Wall

724:第三氣密封件 724: third air seal

73:進氣通道 73: intake channel

731:控制閥 731: Control Valve

74:筒蓋 74: Cylinder cover

741:端壁 741: End Wall

742:穿孔 742: perforation

743:進氣閥 743: intake valve

744:第二環牆 744: Second Ring Wall

75:氣室 75: air chamber

751:彈簧 751: Spring

76:連接通道 76: connection channel

761:接口 761: interface

77:鎚體 77: Hammer

D1:軸向 D1: Axial

D2:延伸方向 D2: Extension direction

D3:軸向 D3: Axial

81:槍柄部 81: Gun handle

82:槍管部 82: Barrel Department

83:進氣通道 83: intake channel

84:進氣閥 84: intake valve

85:鎚體 85: Hammer

86:空間 86: Space

87:橡膠軟塊 87: Rubber soft block

88:彈簧 88: spring

91:柄部 91: handle

92:管部 92: Pipe Department

93:進氣通道 93: intake channel

94:鎚體 94: Hammer

第1圖為本發明第一實施例之剖面示意圖；第2圖為本發明第一實施例之動作狀態剖面示意圖；第3圖為本發明第二實施例之剖面示意圖；第4圖為習知槍形氣動鎚之剖面示意圖；第5圖為習知直筒形氣動鎚之剖面示意圖。 Figure 1 is a schematic cross-sectional view of the first embodiment of the present invention; Figure 2 is a schematic cross-sectional view of the operating state of the first embodiment of the present invention; Figure 3 is a schematic cross-sectional view of the second embodiment of the present invention; Figure 4 is a conventional A schematic cross-sectional view of a gun-shaped pneumatic hammer; Figure 5 is a schematic cross-sectional view of a conventional straight cylindrical pneumatic hammer.

請參閱第1圖，所示者為本發明提供之氣動鎚之減振構造的第一實施例，其包括有一形成槍形之握柄1、一外管2、一內管3及一連接通道4。該握柄1之頂部設有一具開口端111之凹室11，該凹室11沿一軸向D1延伸且具有一底壁12。該握柄1之底部設有一向上延伸並連通至該凹室11之進氣通道13，以供連接外部的高壓氣體供應源，其中該進氣通道13的延伸方向D2與上述該軸向D1之間形成一夾角。該進氣通道13中設有一控制氣流通過的控制閥14，並於該握柄1之一側以一按鈕15連接該控制閥14以供操作。 Please refer to Figure 1, which shows the first embodiment of the vibration damping structure of the pneumatic hammer provided by the present invention, which includes a gun-shaped handle 1, an outer tube 2, an inner tube 3, and a connecting channel 4. The top of the handle 1 is provided with a recess 11 with an open end 111. The recess 11 extends along an axial direction D1 and has a bottom wall 12. The bottom of the handle 1 is provided with an air inlet passage 13 extending upward and connected to the recess 11 for connection to an external high-pressure gas supply source, wherein the extending direction D2 of the air inlet passage 13 is between the direction D2 of the air inlet passage 13 and the above-mentioned axial direction D1. Form an angle between. The air intake passage 13 is provided with a control valve 14 for controlling air flow, and a button 15 is connected to the control valve 14 on one side of the handle 1 for operation.

承上，該凹室11之開口端111以螺紋固鎖一外管2。該外管2中容置有一可活動的內管3，該內管3包括有一位於前方的槍管31及一位於後方的筒蓋32，其中該筒蓋32伸於該凹室11中。該槍管31中設有一可動的鎚體33，且該筒蓋32中設有一進氣閥34，該筒蓋32之一側又設有一穿孔321，其中該穿孔321使該進氣通道13連通至該進氣閥34。據此，高壓氣體自該進氣通道13進入該凹室11後，經由該穿孔321進入該筒蓋32中，並被該進氣閥34注入該槍管31，以驅動該鎚體33在該槍管31中往復移動以供執行作業之用。 On the other hand, the open end 111 of the cavity 11 is screw-locked to an outer tube 2. The outer tube 2 contains a movable inner tube 3. The inner tube 3 includes a barrel 31 located at the front and a cylinder cover 32 located at the rear. The cylinder cover 32 extends in the recess 11. The barrel 31 is provided with a movable hammer 33, and the barrel cover 32 is provided with an air inlet valve 34, and one side of the barrel cover 32 is provided with a through hole 321, wherein the through hole 321 connects the air inlet passage 13 To the intake valve 34. Accordingly, after the high-pressure gas enters the recessed chamber 11 from the intake passage 13, it enters the barrel cover 32 through the perforation 321, and is injected into the barrel 31 by the intake valve 34 to drive the hammer 33 in the The barrel 31 reciprocates for performing operations.

上述該筒蓋32具有一端壁322，其與該底壁12之間形成有一氣室5。該筒蓋32之周側環設有至少一個密接該凹室11之第一氣密封件323，藉此封閉該筒蓋32與該凹室11之間的間隙，以及至少一個抵接該凹室11之耐磨支撐環件324，藉此減輕筒蓋32在振動中與凹室11之間的磨損。於本實施例中，該氣室5中設有一頂推該端壁322之彈性支撐件，更進一步界定為一彈簧6，用以維持該筒蓋32的位置。 The cylinder cover 32 has an end wall 322, and an air chamber 5 is formed between it and the bottom wall 12. The circumferential side ring of the cylinder cover 32 is provided with at least one first air seal 323 which is tightly connected to the cavity 11, thereby closing the gap between the cylinder cover 32 and the cavity 11, and at least one abuts against the cavity 11 of the wear-resistant support ring 324, thereby reducing the gap between the cylinder cover 32 and the cavity 11 during vibration Between wear and tear. In this embodiment, the air chamber 5 is provided with an elastic support member for pushing the end wall 322 and is further defined as a spring 6 for maintaining the position of the cylinder cover 32.

該握柄1中設有一連通該進氣通道13與該氣室5之連接通道4，使高壓氣體導入該進氣通道13之後可經該連接通道4進入該氣室5。於本實施例中，該連接通道4連接該進氣通道13之接口41位於該控制閥14之上游處，因此無須透過該按鈕15打開該控制閥14，高壓氣體就可以常態地注入該氣室5，使其壓力常態維持在高於環境壓力的狀態。 The handle 1 is provided with a connecting passage 4 connecting the air inlet passage 13 and the air chamber 5 so that high-pressure gas can enter the air chamber 5 through the connecting passage 4 after being introduced into the air inlet passage 13. In this embodiment, the interface 41 connecting the connecting passage 4 to the intake passage 13 is located upstream of the control valve 14. Therefore, high pressure gas can be normally injected into the gas chamber without opening the control valve 14 through the button 15 5. To maintain the normal pressure at a state higher than the ambient pressure.

上述該連接通道4係由該握柄1之一側朝該進氣通道13及該氣室5之方向鑽孔製成，因而在該進氣通道13連接該連接通道4之相對側具有一與該連接通道4同向延伸之施工孔16，該施工孔16須以一第二氣密封件17加以封閉，避免漏氣。 The above-mentioned connecting passage 4 is made by drilling a hole on one side of the handle 1 in the direction of the air inlet passage 13 and the air chamber 5, so that the opposite side of the air inlet passage 13 connecting the connecting passage 4 has a and The construction hole 16 extending in the same direction of the connecting channel 4 must be closed with a second air seal 17 to avoid air leakage.

藉由上述結構，由於高壓氣體經由該連接通道4常態地注入該氣室5，使該氣室5內的壓力維持在高於環境壓力的狀態，而可用以抵抗該鎚體33在往復位移時所產生之振動，即利用高壓空氣做為抑振的緩衝墊。 With the above structure, since high-pressure gas is normally injected into the gas chamber 5 through the connecting channel 4, the pressure in the gas chamber 5 is maintained at a state higher than the ambient pressure, and can be used to resist the hammer 33 when it is moved back. The resulting vibration uses high-pressure air as a cushion for vibration suppression.

細言之，如第2圖所示，當該鎚體33向後移動引致該內管3形成振動時(註：實際的振動幅度甚小，未如圖所示地大)，該氣室5內的空氣因高壓而對該內管3形成一股支撐力量，且因此支撐力量係由持續供應的高壓空氣形成，其在受到該鎚體33以每分鐘數千次高頻振動的擠壓之下，仍能迅速、及時地回復原狀而達到良好的支撐效果。 In detail, as shown in Figure 2, when the hammer body 33 moves backward to cause the inner tube 3 to vibrate (note: the actual vibration amplitude is very small, not as large as shown in the figure), the air chamber 5 The high pressure of the air forms a supporting force on the inner tube 3, and therefore the supporting force is formed by the continuously supplied high-pressure air, which is squeezed by the hammer 33 with thousands of high-frequency vibrations per minute , Can still quickly and timely return to the original state and achieve a good supporting effect.

另一方面，由於高壓空氣為沒有具體形狀的物質，其在遭受擠壓時不會產生如硬物相碰撞時的晃動感，而能有效減輕振動。此外，該彈簧6亦對該內管3產生支撐作用，與空氣共同減輕該內管3的振動。 On the other hand, because the high-pressure air is a substance with no specific shape, it will not produce a feeling of shaking when it is squeezed, such as when a hard object collides, and can effectively reduce vibration. In addition, the spring 6 also supports the inner tube 3, and works with air to reduce the vibration of the inner tube 3.

更進一步地，由於高壓氣體充滿該氣室5，而及於該內管3端壁322的整個面積，故前述高壓氣體能全面且均勻地作用在該端壁322上，使減振效果達到最大。 Furthermore, since the high-pressure gas fills the gas chamber 5 and covers the entire area of the end wall 322 of the inner tube 3, the high-pressure gas can act on the end wall 322 comprehensively and uniformly, so that the vibration damping effect can be maximized. .

再者，本發明係採用高壓空氣減輕該內管3的振動，而非有形的彈性物(如橡膠塊等)，杜絕有形物體在受到高頻振動之下所產生的彈性疲乏現象，能在長時間使用之下仍能維持減振的效果不變，而具有耐用性。 Furthermore, the present invention uses high-pressure air to reduce the vibration of the inner tube 3, instead of tangible elastic objects (such as rubber blocks, etc.), to prevent elastic fatigue caused by tangible objects under high-frequency vibration, and can grow The effect of vibration reduction can still be maintained under time use, and it is durable.

雖然氣動鎚使用越高壓的空氣驅動可以達到越好的作動效率，卻同時會造成越大的振動。然而在本發明中，由於驅動氣動鎚的高壓氣體與注入該氣室5以形成抑振作用的高壓氣體是同一來源，即在以高壓氣體驅動氣動鎚以達高效作動的同時，亦能獲得良好的抑振效果，故可消除前述習知氣動鎚在追求效率與遭受振動的兩難問題。 Although pneumatic hammers use higher pressure air drive to achieve better operating efficiency, but at the same time it will cause greater vibration. However, in the present invention, since the high-pressure gas that drives the pneumatic hammer and the high-pressure gas injected into the gas chamber 5 to form a vibration damping effect are from the same source, that is, the pneumatic hammer is driven by high-pressure gas to achieve high-efficiency operation, and it can also obtain good results. The vibration suppression effect can eliminate the aforementioned dilemma between the pursuit of efficiency and the vibration of the conventional pneumatic hammer.

第3圖所示者為本發明之第二實施例，本實施例之結構係以前述第一實施例之結構為基礎，而在構件的空間配置上形成變化。 Figure 3 shows the second embodiment of the present invention. The structure of this embodiment is based on the structure of the first embodiment described above, with changes in the spatial arrangement of the components.

於本實施例中，該握柄71形成沿一軸向D3延伸的直筒形，並沿該軸向D3凹設一凹室72，而外部的高壓氣體供應源係連接於該握柄71之尾端，且該握柄71中設有一沿平行於該軸向D3之方向朝前方延伸之進氣通道73，並連接至該凹室72，其中該進氣通道73中設有一控制氣流通過的控制閥731。該筒蓋74之一側又設有一穿孔742，其中該穿孔742使該進氣通道73連通至該進氣閥743。 In this embodiment, the handle 71 is formed in a straight cylindrical shape extending along an axial direction D3, and a recess 72 is recessed along the axial direction D3, and an external high-pressure gas supply source is connected to the tail of the handle 71 And the handle 71 is provided with an air intake passage 73 extending forward in a direction parallel to the axial direction D3 and connected to the recess 72, wherein the air intake passage 73 is provided with a control for controlling the flow of air Valve 731. One side of the cylinder cover 74 is further provided with a through hole 742, wherein the through hole 742 connects the air inlet passage 73 to the air inlet valve 743.

該凹室72之底壁721固定有一筒件722，該筒件722朝該筒蓋74方向伸出一第一環牆723。該筒蓋74後端之端壁741朝該筒件722方向伸出一第二環牆744，且該第二環牆744氣密地連接在該筒件722之第一環牆723的外側，據此圍成一氣室75，於本實施例中，氣室75內設有一彈簧751。該第一環牆723與該第二環牆744之間設有一個第三氣密封件724，藉此封閉該第一環牆723與該第二環牆744之間的間隙，並隔開該氣室75與該凹室72。 A cylindrical member 722 is fixed to the bottom wall 721 of the recess 72, and the cylindrical member 722 extends toward the cylindrical cover 74 with a first ring wall 723. The end wall 741 at the rear end of the cylinder cover 74 extends toward the cylinder 722 with a second ring wall 744, and the second ring wall 744 is airtightly connected to the The outer side of the first ring wall 723 of the cylindrical member 722 accordingly encloses an air chamber 75. In this embodiment, a spring 751 is provided in the air chamber 75. A third air seal 724 is provided between the first ring wall 723 and the second ring wall 744, thereby closing the gap between the first ring wall 723 and the second ring wall 744 and separating the The air chamber 75 and the recess 72.

該氣室75與該進氣通道73以一連接通道76連接，該連接通道76與該進氣通道73所相連之接口761位於該控制閥731之上游處，使高壓氣體直接且持續注入該氣室75，使該氣室75內的壓力維持在高於環境壓力的狀態，而可用以抵抗該鎚體77在往復位移時所產生之振動。 The gas chamber 75 and the air inlet passage 73 are connected by a connecting passage 76, and the interface 761 connecting the connecting passage 76 and the air inlet passage 73 is located upstream of the control valve 731, so that high-pressure gas is directly and continuously injected into the gas The chamber 75 maintains the pressure in the air chamber 75 at a state higher than the ambient pressure, and can be used to resist the vibration generated by the hammer body 77 when it is moved back.

據此，第二實施例亦可達到如同前述第一實施例之減振及提升耐用性之功效。 Accordingly, the second embodiment can also achieve the effects of damping and improving durability as the aforementioned first embodiment.

惟，以上實施例之揭示僅用以說明本發明，並非用以限制本發明，舉凡等效元件之置換仍應隸屬本發明之範疇。 However, the disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention. Any replacement of equivalent elements should still belong to the scope of the present invention.

綜上所述，可使熟知本領域技術者明瞭本發明確可達成前述目的，實已符合專利法之規定，爰依法提出申請。 In summary, those skilled in the art can understand that this invention clearly achieves the aforementioned purpose, and that it has actually complied with the provisions of the Patent Law, so it is necessary to file an application in accordance with the law.

1:握柄 1: grip

11:凹室 11: Alcove

111:開口端 111: open end

12:底壁 12: bottom wall

13:進氣通道 13: intake channel

14:控制閥 14: Control valve

15:按鈕 15: Button

16:施工孔 16: Construction hole

17:第二氣密封件 17: The second air seal

2:外管 2: Outer tube

3:內管 3: inner tube

31:槍管 31: Barrel

32:筒蓋 32: Cylinder cover

321:穿孔 321: Piercing

322:端壁 322: End Wall

323:第一氣密封件 323: The first air seal

324:耐磨支撐環件 324: Wear-resistant support ring

33:鎚體 33: Hammer

34:進氣閥 34: intake valve

4:連接通道 4: connection channel

41:接口 41: Interface

5:氣室 5: Air chamber

6:彈簧 6: Spring

D1:軸向 D1: Axial

D2:延伸方向 D2: Extension direction

Claims

一種氣動鎚之減振構造，其包括有：一握柄，其具有一凹室，該凹室具有一開口端及一底壁；該握柄設有一連接至該凹室之進氣通道，其中該進氣通道中設有一控制氣流通過的控制閥；一外管，其固定於該凹室之開口端；一內管，其可活動地容置於該外管中，包括有相連接之一槍管及一伸於該凹室中之筒蓋，其中該槍管中設有一可動的鎚體，該筒蓋中設有一控制該鎚體作動的進氣閥，且該筒蓋設有一使該進氣通道連通至該進氣閥之穿孔；該筒蓋具有一端壁，其與該底壁之間形成有一氣室，其中該筒蓋設有一密接該凹室之第一氣密封件；一連接通道，其連通該進氣通道與該氣室，該連接通道連接該進氣通道之接口位於該控制閥之上游處，使高壓空氣能常態地進入該氣室。 A vibration damping structure of a pneumatic hammer, comprising: a handle with a recessed chamber, the recessed chamber having an open end and a bottom wall; the handle is provided with an air inlet channel connected to the recessed chamber, wherein The air inlet passage is provided with a control valve for controlling the passage of air flow; an outer tube fixed to the open end of the recess; an inner tube movably accommodated in the outer tube, including a connected one The barrel and a barrel cover extending in the recessed chamber, wherein a movable hammer is provided in the barrel, an air inlet valve controlling the action of the hammer is provided in the barrel cover, and the barrel cover is provided with an inlet valve The air passage is connected to the perforation of the intake valve; the cylinder cover has an end wall, and an air chamber is formed between the cylinder cover and the bottom wall, wherein the cylinder cover is provided with a first air seal that tightly contacts the cavity; a connecting channel , Which communicates the air inlet passage and the air chamber, and the interface of the connecting passage connecting the air inlet passage is located upstream of the control valve, so that high-pressure air can enter the air chamber normally.

如請求項1所述之氣動鎚之減振構造，其中，定義該凹室沿一軸向延伸，該軸向與該進氣通道的延伸方向之間形成一夾角。 The vibration damping structure of a pneumatic hammer according to claim 1, wherein the recess is defined to extend along an axial direction, and an included angle is formed between the axial direction and the extending direction of the air inlet passage.

如請求項2所述之氣動鎚之減振構造，其中，該連接通道設於該握柄中，且位於該進氣通道之一側；該進氣通道於該連接通道之一相對側設有一與該連接通道同向延伸之施工孔，且該施工孔以一第二氣密封件封閉。 The vibration damping structure of a pneumatic hammer according to claim 2, wherein the connecting passage is provided in the handle and located on one side of the air intake passage; the air intake passage is provided with an opposite side of the connecting passage A construction hole extending in the same direction as the connecting channel, and the construction hole is closed by a second air seal.

如請求項2所述之氣動鎚之減振構造，其中，該筒蓋設有至少一個抵接該凹室之耐磨支撐環件。 The vibration damping structure of a pneumatic hammer according to claim 2, wherein the cylinder cover is provided with at least one wear-resistant support ring abutting against the cavity.

如請求項1所述之氣動鎚之減振構造，其中，定義該凹室沿一軸向延伸，該軸向與該進氣通道的延伸方向平行；該凹室之底壁固定有一筒件，該筒件朝該內管方向伸出一第一環牆；該筒蓋之端壁朝該筒件方向伸出一第二環牆，且該第二環牆氣密地連接在該第一環牆的外側。 The vibration damping structure of a pneumatic hammer according to claim 1, wherein the recessed chamber is defined to extend along an axial direction, the axial direction being parallel to the extending direction of the air inlet passage; the bottom wall of the recessed chamber is fixed with a cylindrical member, The tube part extends toward the inner tube with a first ring wall; the end wall of the tube cover extends toward the tube part with a second ring wall, and the second ring wall is airtightly connected to the first ring The outside of the wall.

如請求項2或5所述之氣動鎚之減振構造，其中，該氣室中設有一頂推該端壁之彈性支撐件。 The vibration damping structure of a pneumatic hammer according to claim 2 or 5, wherein an elastic support member for pushing the end wall is provided in the air chamber.

如請求項6所述之氣動鎚之減振構造，其中，該彈性支撐件為一彈簧。 The vibration damping structure of a pneumatic hammer according to claim 6, wherein the elastic support is a spring.