TW202302286A

TW202302286A - Socket for rotary tools preventing a pin connecting an insertion block of the rotary tool from falling while assembling and detaching the rotary tool

Info

Publication number: TW202302286A
Application number: TW111124727A
Authority: TW
Inventors: 長船勝己
Original assignee: 日商益冉軸心股份有限公司
Priority date: 2021-07-05
Filing date: 2022-07-01
Publication date: 2023-01-16
Also published as: CN115582797A; JP2023008305A; TWI815534B

Abstract

The invention provides a socket for rotary tool that prevents a pin connecting an insertion block of the rotary tool from falling while assembling and detaching the rotary tool. The socket for the rotary tool is provided with a second groove being in parallel with a first groove provided for embedding an O-shaped seal ring and formed along the circumferential direction on the outer peripheral surface of the connection part disposed to the cylindrical main body. In an axial view, the second groove is formed at a position overlapping with the first through hole and is formed within a range where an imaginary line that is from the cylinder axis toward the first through hole is shifted to above plus or minus 45 degrees and less than 90 degrees while taking the cylinder axis as a center.

Description

Rotary Tool Sockets

本發明涉及一種旋轉工具用套筒。The invention relates to a sleeve for a rotary tool.

以往，作為緊固螺栓或螺帽等的旋轉工具，公知有衝擊扳手。衝擊扳手是供螺栓等嵌合的套筒拆裝自如的結構。套筒可拆卸，因此，迄今為止，提出了各種防止在衝擊扳手的使用過程中從衝擊扳手脫落的套筒。在專利文獻1中公開有可安裝固定於衝擊扳手的驅動軸的套筒。該套筒具有形成有與驅動軸嵌合的安裝孔的筒部，且形成有貫通該筒部並到達安裝孔的銷插入孔。在筒部的外周面設置有在通過銷插入孔上的位置環繞筒部的第1凹槽和與第1凹槽大致平行地環繞筒部的第2凹槽。通過設置有第2凹槽，能夠使與第1凹槽嵌合的O形密封圈向第2凹槽挪動而臨時載置，因此，能夠防止O形密封圈偏離而從套筒脫落的情況等，能夠改善套筒的拆裝操作性。 [先前技術文獻] [專利文獻] 專利文獻1：日本特開2013-146818號公報 Conventionally, an impact wrench is known as a rotary tool for fastening a bolt, a nut, or the like. The impact wrench has a detachable structure for fitting a socket such as a bolt. The socket is detachable, and therefore, various sockets that prevent the impact wrench from falling off during use of the impact wrench have been proposed so far. Patent Document 1 discloses a socket attachable and fixed to a drive shaft of an impact wrench. The sleeve has a cylindrical portion formed with a mounting hole to be fitted with the drive shaft, and a pin insertion hole penetrating through the cylindrical portion and reaching the mounting hole is formed. A first groove surrounding the cylinder at a position where the pin is inserted into the hole and a second groove surrounding the cylinder substantially parallel to the first groove are provided on the outer peripheral surface of the cylinder. By providing the second groove, the O-ring fitted in the first groove can be moved to the second groove and placed temporarily, so it is possible to prevent the O-ring from being deviated and falling off the sleeve, etc. , It is possible to improve the detachment operability of the sleeve. [Prior Art Literature] [Patent Document] Patent Document 1: Japanese Patent Laid-Open No. 2013-146818

[發明所欲解決之課題] 在專利文獻1中，在相對於衝擊扳手拆裝套筒之際，需要使O形密封圈整體從凹槽挪動而插拔銷。供銷插入的貫通孔在主體軸的左右開口，因此，若使O形密封圈從凹槽挪動，則左右兩方的開口暴露。這樣一來，在例如拔出銷之際，若以使貫通孔的一個開口朝下的狀態使O形密封圈整體挪動，則存在如下問題：銷有可能從朝下的開口落下，作業效率降低。因此，本發明的目的之一在於提供一種在相對於旋轉工具的拆裝時防止用於與旋轉工具的插入方塊連結的銷落下的旋轉工具用套筒。 [用於解決課題的手段] 本發明是一種旋轉工具用套筒，其具備圓筒狀的主體部，該圓筒狀的主體部在一端設置有套筒部，在另一端設置有供旋轉工具連接的連接部，上述連接部具有：插入孔，沿著上述主體部的圓筒軸線形成，可供上述旋轉工具的插入方塊插入；第1槽，在上述連接部的外周面沿著以上述圓筒軸線為中心的周向形成為環狀；第1貫通孔，沿著上述圓筒軸線的徑向從上述插入孔向上述第1槽貫通；以及第2貫通孔，從沿著上述圓筒軸線的軸向看來以上述圓筒軸線為中心形成於與上述第1貫通孔相反的一側的位置，且沿著上述徑向從上述插入孔向上述第1槽貫通，以位於上述插入方塊的銷插入孔與上述第1貫通孔及上述第2貫通孔形成一串孔的方式將上述插入方塊插入上述插入孔，將銷插入上述一串孔，使O形密封圈與上述第1槽嵌合，從而該旋轉工具用套筒與上述插入方塊連結，在該旋轉工具用套筒中，在上述連接部的外周面中設置有與上述第1槽平行且沿周向形成的第2槽，從上述軸向看來，上述第2槽形成於與上述第1貫通孔重疊的位置，並且，形成於使從上述圓筒軸線朝向上述第1貫通孔的假想線以上述圓筒軸線為中心移動了±45度以上且小於90度時的範圍內。 [發明效果] 根據本發明，能夠在相對於旋轉工具的拆裝時防止用於與旋轉工具的插入方塊連結的銷落下。 [Problem to be Solved by the Invention] In Patent Document 1, when attaching and detaching the socket to the impact wrench, it is necessary to move the entire O-ring from the groove to insert and remove the pin. The through hole into which the pin is inserted opens on the left and right of the main body shaft, so when the O-ring is moved from the groove, the left and right openings are exposed. In this way, for example, when the pin is pulled out, if the entire O-ring is moved with one opening of the through hole facing downward, there is a problem that the pin may fall from the downward opening, and the work efficiency will be reduced. . Therefore, one object of the present invention is to provide a bush for a rotary tool that prevents a pin for coupling to an insertion block of the rotary tool from falling off when the rotary tool is attached or detached from the rotary tool. [Means used to solve the problem] The present invention is a sleeve for a rotary tool, which has a cylindrical main body portion, a sleeve portion is provided at one end of the cylindrical main body portion, and a connecting portion for connecting a rotary tool is provided at the other end, the connecting portion It has: an insertion hole formed along the cylindrical axis of the above-mentioned main body, into which the insertion block of the above-mentioned rotary tool can be inserted; a first groove formed on the outer peripheral surface of the above-mentioned connection part along the circumferential direction centering on the above-mentioned cylindrical axis It is annular; the first through hole penetrates from the insertion hole to the first groove along the radial direction of the cylinder axis; The cylinder axis is formed at a position opposite to the above-mentioned first through hole, and penetrates from the above-mentioned insertion hole to the above-mentioned first groove along the above-mentioned radial direction. Hole and the above-mentioned second through hole form a series of holes. Insert the above-mentioned insertion block into the above-mentioned insertion hole, insert the pin into the above-mentioned series of holes, and fit the O-ring seal into the above-mentioned first groove, so that the rotary tool sleeve Linked with the above-mentioned insertion block, in this rotary tool sleeve, A second groove parallel to the first groove and formed along the circumferential direction is provided on the outer peripheral surface of the connecting portion, From the perspective of the above axis, The second groove is formed at a position overlapping with the first through hole, and is formed so that a virtual line from the axis of the cylinder toward the first through hole is shifted from the axis of the cylinder by more than ±45 degrees and less than the center of the axis of the cylinder. range of 90 degrees. [Invention effect] According to the present invention, it is possible to prevent the pin for coupling with the insertion block of the rotary tool from falling when attaching or detaching the rotary tool.

以下，參照附圖而對本發明的一實施方式進行說明。以下，作為旋轉工具用套筒(以下，簡稱為套筒)可拆裝的旋轉工具的一個例子，列舉衝擊扳手而說明。然而，套筒可拆裝的旋轉工具既可以是手動式扳手，也可以是衝擊螺絲刀等。 [對於衝擊扳手] 圖1是表示本實施方式的套筒1和衝擊扳手50的概略圖。在圖1中，放大表示由圓圈包圍的部分。衝擊扳手50通過向馬達供給電力，利用該馬達使旋轉軸旋轉。衝擊扳手50具備根據旋轉軸的旋轉而旋轉的凸型的插入方塊51。插入方塊51是倒角的四棱柱形狀，在平行的兩側面形成有銷插入孔52。此外，也可以是在與兩側面正交的上下表面也形成有銷插入孔。另外，為了方便說明，將形成有銷插入孔52的面稱為側面，但由於插入方塊51旋轉，所以並不特定側面和上下表面。該銷插入孔52是為了將後述的套筒1與插入方塊51連結而用於供銷(未圖示)插入的貫通孔。與插入方塊51連結起來的套筒1由於插入方塊51旋轉而旋轉。對於衝擊扳手50的內部的具體的結構，與以往的衝擊扳手的結構同樣，因此，省略詳細的說明。 [對於套筒的具體的結構] 以下，詳細地說明套筒1的具體的結構。圖2是套筒1的側視圖。圖3是套筒1的俯視圖。圖4是圖3的IV-IV線處的剖視圖。圖5是圖3的V-V線處的剖視圖。此外，為了方便說明，圖2設為側視圖，圖3設為俯視圖，但由於套筒1是圓筒狀，因此，並不限定套筒1的上表面和側面。另外，在圖5中，為了易於把握構成部彼此的位置關係，以虛線表示在V-V線處的截面中看不見的構成部(後述的第1貫通孔15A和第2貫通孔15B)。套筒1具備以中心軸線P為中心的圓筒狀的主體部10。在主體部10的第1端部設置有供旋轉工具50連接的連接部10A，在第2端部設置有套筒部10B。套筒部10B具有供螺栓或螺帽等嵌入的孔。對套筒部10B的結構並沒有特別限定，因此，省略其說明。以下，將沿著中心軸線P的方向稱為軸向，周向和徑向分別是以中心軸線P為中心的方向。連接部10A具有插入孔10C、第1槽11、第1貫通孔15A以及第2貫通孔15B。插入孔10C可供插入方塊51插入，該插入孔10C沿著主體部10的圓筒軸線(中心軸線P)形成。第1槽11是在主體部10的外周面沿著周向形成為環狀。第1貫通孔15A形成為沿著徑向從插入孔10C向第1槽11貫通。第2貫通孔15B從徑向看來以中心軸線P為中心形成於與第1貫通孔15A相反的一側的位置，並形成為沿著徑向從插入孔10C向第1槽11貫通。第1貫通孔15A和第2貫通孔15B具有欲插入之插入方塊51的銷插入孔52的銷可插入的大小。在將套筒1向衝擊扳手50安裝固定的情況下，使插入方塊51的銷插入孔52與第1貫通孔15A及第2貫通孔15B以重疊的方式對齊地將插入方塊51插入於套筒1的插入孔10C，以便形成沿著徑向的一串孔。然後，將銷插入於該一串孔。O形密封圈2(參照圖1)與第1槽11嵌合，以防止已插入到一串孔的銷脫落。圖6是嵌合有O形密封圈2的套筒1的側視圖。圖7是嵌合有O形密封圈2的套筒1的俯視圖。以下說明的O形密封圈2和銷既可以是套筒1所具備的構件，也可以是能夠與其他套筒共用的通用的構件。O形密封圈2例如由氟橡膠、聚氨酯橡膠、有機矽橡膠或腈橡膠等形成。 O形密封圈2以封堵第1貫通孔15A和第2貫通孔15B的方式與第1槽11嵌合。使O形密封圈2從第1槽11挪動而使第1貫通孔15A或第2貫通孔15B暴露，之後詳述。由此，可相對於第1貫通孔15A或第2貫通孔15B插拔銷。此外，第1槽11的深度設定成在嵌合有O形密封圈2時，O形密封圈2在徑向上從第1槽11突出的程度的深度。另外，該深度設定為O形密封圈2難以偏離第1槽11。具體而言，設定為：O形密封圈2不會因使用衝擊扳手50時的振動而偏離第1槽11，但能夠利用人手使O形密封圈2從第1槽11挪動。在主體部10的第1端部還形成有第2槽12和第3槽13。第2槽12和第3槽13與第1槽11平行地沿周向形成於主體部10的外周面。另外，第2槽12和第3槽13形成為在軸向上位於相同的位置，且位於同一圓周上。此外，在本實施方式中，從主體部10的第1端部側起按照第1槽11、第2槽12和第3槽13的順序形成。然而，第1槽11、第2槽12和第3槽13的形成順序也可以相反。在此，使用圖8而對第2槽12和第3槽13的形成位置進行說明。圖8是用於說明第2槽12的形成位置的圖。圖8是從軸向觀察的圖。第2槽12從軸向看來形成於與第1貫通孔15A重疊的位置。另外，第2槽12形成於使從中心軸線P朝向第1貫通孔15A的假想線16以中心軸線P為中心移動了±45度以上且小於90度時的範圍內。此外，對於第3槽13的形成位置也同樣。雖未圖示，但第3槽13從軸向看來形成於與第2貫通孔15B重疊的位置。另外，第3槽13形成於使從中心軸線P朝向第2貫通孔15B的假想線16以中心軸線P為中心移動了±45度以上且小於90度時的範圍內。此外，也可以不設置第3槽13。第2槽12是如下槽：為了使由O形密封圈2封堵的第1貫通孔15A暴露，在使O形密封圈2從第1槽11挪動時供O形密封圈2臨時載置。另外，第3槽13是如下槽：為了使由O形密封圈2封堵的第2貫通孔15B暴露，在使O形密封圈2從第1槽11挪動時供該O形密封圈2臨時載置。以下，對O形密封圈2的臨時載置進行說明。圖9和圖10是表示將O形密封圈2臨時載置到第2槽12的狀態的圖。圖9是相當於圖2和圖4的側視圖，圖10是相當於圖3和圖5的俯視圖。此外，以下，對第2槽12進行說明。對於第3槽13，與第2槽12同樣，因此，省略其說明。若覆蓋第1貫通孔15A的O形密封圈2的一部分被作業人員的手指向第2槽12側推壓，則O形密封圈2的一部分越過第1槽11的壁部，並與第2槽12嵌合。O形密封圈2的一部分與第2槽12A嵌合(臨時載置於第2槽12A)，從而即使作業人員使手指離開，也可抑制該O形密封圈2的一部分返回第1槽11。由此，第1貫通孔15A成為暴露的狀態，因此，作業人員可相對於第1貫通孔15A進行銷的插拔。另外，此時，第2貫通孔15B由O形密封圈2封堵，因此，可防止銷從第2貫通孔15B脫落。在完成銷相對於第1貫通孔15A的插拔之後，臨時載置到第2槽12的O形密封圈2的一部分被作業人員的手指向第1槽11側推壓，從而O形密封圈2向第1槽11嵌合，第1貫通孔15A和第2貫通孔15B由O形密封圈2封堵。在插入有銷的情況下，O形密封圈2封堵第1貫通孔15A和第2貫通孔15B，從而對銷進行防脫。此外，第2槽12是O形密封圈2的臨時載置用的槽，較佳為第2槽12的深度是第1槽11的深度以上，以便臨時載置到第2槽12的O形密封圈2不向第1槽11返回(參照圖3)。第1槽的位於與上述第2槽重疊的位置的部分的該第1槽的上述第2槽側的壁(附圖標記A所示部分)比位於不與上述第2槽重疊的位置的部分的壁(附圖標記B所示部分)低。 [對於套筒的拆裝] 接著，對套筒1相對於衝擊扳手50的拆裝進行說明。圖11是表示將套筒1向衝擊扳手50安裝固定之際的順序的圖。作為前提，設為O形密封圈2與第1槽11嵌合。另外，與圖9和圖10中的說明同樣地，設為使第1貫通孔15A暴露。在將套筒1向衝擊扳手50安裝固定之際，首先，使封堵第1貫通孔15A的O形密封圈2的一部分向第2槽12側挪動而向第2槽12臨時載置。在該狀態下，以插入方塊51的銷插入孔52與套筒1的第1貫通孔15A及第2貫通孔15B重疊的方式將插入方塊51插入套筒1的插入口10A(圖11的(A))。接著，將銷53從第1貫通孔15A插入(圖11的(B))。此時，第2貫通孔15B處於由O形密封圈2封堵的狀態，因此，可防止從第1貫通孔15A插入的銷53從第2貫通孔15B脫落。由此，銷53成為插入到插入方塊51的銷插入孔52、第1貫通孔15A以及第2貫通孔15B這一串孔的狀態。最後，使臨時載置到第2槽12的O形密封圈2的一部分向第1槽11側挪動而向第1槽11嵌合(圖11的(C))。所插入的銷53利用O形密封圈2防止從銷插入孔52、第1貫通孔15A以及第2貫通孔15B脫落，套筒1與插入方塊51連結。由此，套筒1向衝擊扳手50安裝固定。拆卸已安裝固定到衝擊扳手50的套筒1的情況的順序與上述的順序相反。即，使封堵已安裝固定到衝擊扳手50的套筒1的第1貫通孔15A的O形密封圈2的一部分向第2槽12側挪動而向第2槽12臨時載置。由此，第1貫通孔15A暴露。在該狀態下，拔出銷53。此時，第2貫通孔15B由O形密封圈2封堵，因此，可防止銷53從第2貫通孔15B脫落。通過拔出銷53，可解除套筒1與插入方塊51之間的連結。由此，能夠從衝擊扳手50拆卸套筒1。如以上這樣，本實施方式的套筒1能夠防止用於與衝擊扳手50的插入方塊51連結的銷53落下，同時實現相對於衝擊扳手50的拆裝。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Hereinafter, an impact wrench will be described as an example of a rotary tool to which a socket for a rotary tool (hereinafter, simply referred to as a socket) can be attached or detached. However, the rotary tool with a detachable socket may be a manual wrench or an impact screwdriver or the like. [For impact wrench] FIG. 1 is a schematic diagram showing a socket 1 and an impact wrench 50 according to the present embodiment. In FIG. 1 , a portion surrounded by a circle is shown enlarged. In the impact wrench 50, electric power is supplied to the motor, and the motor rotates the rotary shaft. The impact wrench 50 includes a convex insertion block 51 that rotates according to the rotation of the rotation shaft. The insertion block 51 is in the shape of a chamfered quadrangular prism, and pin insertion holes 52 are formed on parallel side surfaces. In addition, pin insertion holes may also be formed on the upper and lower surfaces perpendicular to both side surfaces. In addition, for convenience of description, the surface on which the pin insertion hole 52 is formed is referred to as a side surface, but since the insertion block 51 rotates, the side surface and the upper and lower surfaces are not specified. The pin insertion hole 52 is a through hole through which a pin (not shown) is inserted in order to couple the sleeve 1 described later to the insertion block 51 . The sleeve 1 coupled with the insertion block 51 rotates due to the rotation of the insertion block 51 . The specific internal structure of the impact wrench 50 is the same as that of a conventional impact wrench, and thus detailed description thereof will be omitted. [For the specific structure of the sleeve] Hereinafter, a specific structure of the sleeve 1 will be described in detail. FIG. 2 is a side view of the sleeve 1 . FIG. 3 is a top view of the sleeve 1 . Fig. 4 is a sectional view taken along line IV-IV of Fig. 3 . Fig. 5 is a cross-sectional view taken along line V-V in Fig. 3 . 2 is a side view and FIG. 3 is a plan view for convenience of explanation, but since the sleeve 1 is cylindrical, the upper surface and side surfaces of the sleeve 1 are not limited. In addition, in FIG. 5 , in order to easily understand the positional relationship between the constituent parts, the constituent parts invisible in the cross section along the line V-V (the first through hole 15A and the second through hole 15B described later) are shown by dotted lines. The sleeve 1 includes a cylindrical body portion 10 centered on a central axis P. As shown in FIG. A connection portion 10A to which the rotary tool 50 is connected is provided at a first end portion of the main body portion 10 , and a sleeve portion 10B is provided at a second end portion. The sleeve portion 10B has holes into which bolts, nuts, and the like are fitted. The structure of the sleeve portion 10B is not particularly limited, and thus description thereof will be omitted. Hereinafter, the direction along the central axis P is referred to as the axial direction, and the circumferential direction and the radial direction are directions centered on the central axis P, respectively. The connecting portion 10A has an insertion hole 10C, a first groove 11 , a first through hole 15A, and a second through hole 15B. An insertion hole 10C into which the insertion block 51 can be inserted is formed along the cylindrical axis (central axis P) of the main body portion 10 . The first groove 11 is formed in an annular shape along the circumferential direction on the outer peripheral surface of the main body portion 10 . The first through hole 15A is formed to pass through the first groove 11 from the insertion hole 10C in the radial direction. The second through-hole 15B is formed at a position opposite to the first through-hole 15A around the central axis P as viewed in the radial direction, and is formed to pass through the first groove 11 from the insertion hole 10C in the radial direction. The 1st through-hole 15A and the 2nd through-hole 15B have the size which the pin of the pin insertion hole 52 of the insertion block 51 to be inserted can insert. When attaching and fixing the socket 1 to the impact wrench 50, the insertion block 51 is inserted into the socket so that the pin insertion hole 52 of the insertion block 51 is aligned with the first through hole 15A and the second through hole 15B so as to overlap. 1 into the hole 10C to form a series of holes along the radial direction. Then, a pin is inserted into the series of holes. The O-ring 2 (see FIG. 1 ) fits into the first groove 11 to prevent the pins inserted into the series of holes from coming off. FIG. 6 is a side view of the sleeve 1 in which the O-ring 2 is fitted. FIG. 7 is a plan view of the sleeve 1 in which the O-ring 2 is fitted. The O-ring 2 and the pin to be described below may be components included in the sleeve 1 or common components that can be shared with other sleeves. The O-ring 2 is formed of, for example, fluorine rubber, urethane rubber, silicone rubber, or nitrile rubber. The O-ring 2 is fitted into the first groove 11 so as to close the first through hole 15A and the second through hole 15B. The O-ring 2 is moved from the first groove 11 to expose the first through hole 15A or the second through hole 15B, which will be described in detail later. Accordingly, the pin can be inserted and removed from the first through hole 15A or the second through hole 15B. In addition, the depth of the first groove 11 is set to such an extent that the O-ring 2 protrudes from the first groove 11 in the radial direction when the O-ring 2 is fitted. In addition, this depth is set so that the O-ring 2 hardly deviates from the first groove 11 . Specifically, it is set so that the O-ring 2 does not deviate from the first groove 11 due to vibration when the impact wrench 50 is used, but the O-ring 2 can be moved from the first groove 11 manually. A second groove 12 and a third groove 13 are also formed in the first end portion of the main body portion 10 . The second groove 12 and the third groove 13 are formed on the outer peripheral surface of the main body portion 10 in parallel to the first groove 11 along the circumferential direction. In addition, the second groove 12 and the third groove 13 are formed at the same position in the axial direction and on the same circumference. In addition, in this embodiment, the first groove 11 , the second groove 12 , and the third groove 13 are formed in this order from the first end portion side of the main body portion 10 . However, the formation order of the first groove 11, the second groove 12, and the third groove 13 may be reversed. Here, the formation positions of the second groove 12 and the third groove 13 will be described using FIG. 8 . FIG. 8 is a diagram for explaining the formation position of the second groove 12 . Fig. 8 is a view viewed from the axial direction. The second groove 12 is formed at a position overlapping the first through hole 15A as viewed in the axial direction. In addition, the second groove 12 is formed within a range where a virtual line 16 from the center axis P toward the first through hole 15A is shifted from the center axis P by ±45 degrees or more and less than 90 degrees. In addition, the same applies to the formation position of the third groove 13 . Although not shown, the third groove 13 is formed at a position overlapping with the second through hole 15B when viewed in the axial direction. In addition, the third groove 13 is formed within a range where a virtual line 16 from the center axis P toward the second through hole 15B is shifted from the center axis P by ±45 degrees or more and less than 90 degrees. In addition, the third groove 13 may not be provided. The second groove 12 is a groove for temporarily placing the O-ring 2 when moving the O-ring 2 from the first groove 11 in order to expose the first through hole 15A closed by the O-ring 2 . In addition, the third groove 13 is a groove for temporarily holding the O-ring 2 when moving the O-ring 2 from the first groove 11 in order to expose the second through-hole 15B blocked by the O-ring 2 . loaded. Hereinafter, temporary placement of the O-ring 2 will be described. 9 and 10 are diagrams showing a state in which the O-ring 2 is temporarily placed in the second groove 12 . FIG. 9 is a side view corresponding to FIGS. 2 and 4 , and FIG. 10 is a plan view corresponding to FIGS. 3 and 5 . In addition, below, the 2nd tank 12 is demonstrated. The third groove 13 is the same as that of the second groove 12, and thus description thereof will be omitted. If a part of the O-ring 2 covering the first through hole 15A is pushed toward the second groove 12 side by the operator's fingers, a part of the O-ring 2 will go over the wall of the first groove 11 and contact the second groove 12. Groove 12 fits. Part of the O-ring 2 is fitted into the second groove 12A (temporarily placed in the second groove 12A), so that even if the operator releases his fingers, the part of the O-ring 2 is prevented from returning to the first groove 11 . Thereby, since 15 A of 1st through-holes are exposed, an operator can insert and remove a pin with respect to 15 A of 1st through-holes. In addition, at this time, since the second through hole 15B is closed by the O-ring 2 , the pin can be prevented from coming off from the second through hole 15B. After the pin is inserted and removed from the first through hole 15A, part of the O-ring 2 temporarily placed in the second groove 12 is pushed toward the first groove 11 by the operator's fingers, so that the O-ring 2 is fitted into the first groove 11, and the first through hole 15A and the second through hole 15B are sealed by the O-ring 2. When the pin is inserted, the O-ring 2 seals the first through hole 15A and the second through hole 15B to prevent the pin from coming off. In addition, the second groove 12 is a groove for temporarily placing the O-ring 2, and it is preferable that the depth of the second groove 12 is greater than or equal to the depth of the first groove 11 so that the O-ring in the second groove 12 is temporarily placed. The seal ring 2 does not return to the first groove 11 (see FIG. 3 ). The wall of the first groove on the side of the second groove (the portion shown by reference symbol A) in the portion of the first groove that overlaps the second groove is larger than the portion that does not overlap the second groove. The wall (the part shown by reference sign B) is low. [For detachment of the sleeve] Next, attachment and detachment of the socket 1 to the impact wrench 50 will be described. FIG. 11 is a diagram showing a procedure for attaching and fixing the socket 1 to the impact wrench 50 . As a premise, it is assumed that the O-ring 2 is fitted into the first groove 11 . In addition, it is assumed that the first through hole 15A is exposed in the same manner as in the description of FIGS. 9 and 10 . When attaching and fixing the socket 1 to the impact wrench 50 , first, a part of the O-ring 2 that closes the first through hole 15A is moved toward the second groove 12 and temporarily placed in the second groove 12 . In this state, the insertion block 51 is inserted into the insertion port 10A of the sleeve 1 so that the pin insertion hole 52 of the insertion block 51 overlaps the first through hole 15A and the second through hole 15B of the sleeve 1 (( A)). Next, the pin 53 is inserted from the first through hole 15A ((B) of FIG. 11 ). At this time, the second through hole 15B is closed by the O-ring 2 , so that the pin 53 inserted through the first through hole 15A is prevented from falling out of the second through hole 15B. Accordingly, the pin 53 is inserted into a series of holes including the pin insertion hole 52 of the insertion block 51 , the first through hole 15A, and the second through hole 15B. Finally, a part of the O-ring 2 temporarily placed in the second groove 12 is shifted toward the first groove 11 and fitted into the first groove 11 ( FIG. 11(C) ). The inserted pin 53 is prevented from dropping out from the pin insertion hole 52 , the first through hole 15A, and the second through hole 15B by the O-ring 2 , and the sleeve 1 is connected to the insertion block 51 . As a result, the socket 1 is mounted and fixed to the impact wrench 50 . The procedure in the case of detaching the socket 1 mounted and fixed to the impact wrench 50 is the reverse of the procedure described above. That is, a part of the O-ring 2 closing the first through hole 15A of the socket 1 mounted and fixed to the impact wrench 50 is moved to the second groove 12 side and temporarily placed in the second groove 12 . Thus, the first through hole 15A is exposed. In this state, the pin 53 is pulled out. At this time, since the second through hole 15B is closed by the O-ring 2 , it is possible to prevent the pin 53 from coming off from the second through hole 15B. By pulling out the pin 53, the connection between the sleeve 1 and the insertion block 51 can be released. Thereby, the socket 1 can be detached from the impact wrench 50 . As described above, the socket 1 according to the present embodiment can prevent the pin 53 for coupling to the insertion block 51 of the impact wrench 50 from falling down, and can be attached to and detached from the impact wrench 50 .

1:套筒 2:O形密封圈 10:圓筒部 10A:插入口 10B:套筒部 11:第1槽 11A,11B:凹部 12:第2槽 13:第3槽 15A:第1貫通孔 15B:第2貫通孔 16:假想線 50:衝擊扳手 51:插入方塊 52:銷插入口 53:銷 1: Sleeve 2: O-ring seal 10: Cylindrical part 10A: Insertion port 10B: sleeve part 11: Slot 1 11A, 11B: concave part 12: Slot 2 13: Slot 3 15A: 1st through hole 15B: Second through hole 16: Imaginary line 50: Impact wrench 51: Insert block 52: Pin insertion port 53: pin

[圖1]是表示實施方式的套筒和衝擊扳手的概略圖。 [圖2]是套筒的側視圖。 [圖3]是套筒的俯視圖。 [圖4]是圖3的IV-IV線處的剖視圖。 [圖5]是圖3的V-V線處的剖視圖。 [圖6]是嵌合有O形密封圈的套筒的側視圖。 [圖7]是嵌合有O形密封圈的套筒的俯視圖。 [圖8]是用於說明第2槽的形成位置的圖。 [圖9]是表示將O形密封圈臨時載置到第2槽的狀態的圖。 [圖10]是表示將O形密封圈臨時載置到第2槽的狀態的圖。 [圖11]是表示將套筒向衝擊扳手安裝固定之際的順序的圖。 [ Fig. 1 ] is a schematic diagram showing a socket and an impact wrench according to an embodiment. [ Fig. 2 ] is a side view of the sleeve. [ Fig. 3 ] is a plan view of the sleeve. [ Fig. 4 ] is a sectional view taken along line IV-IV in Fig. 3 . [ Fig. 5 ] is a cross-sectional view taken along line V-V in Fig. 3 . [ Fig. 6 ] It is a side view of a sleeve fitted with an O-ring. [ Fig. 7 ] It is a plan view of a sleeve fitted with an O-ring. [FIG. 8] It is a figure for demonstrating the formation position of the 2nd groove|channel. [ Fig. 9 ] is a view showing a state in which an O-ring is temporarily placed in the second groove. [ Fig. 10 ] is a diagram showing a state where the O-ring is temporarily placed in the second groove. [FIG. 11] It is a figure which shows the procedure at the time of attaching and fixing the socket to the impact wrench.

1:套筒 1: Sleeve

10:圓筒部 10: Cylindrical part

10C:插入孔 10C: Insertion hole

12:第2槽 12: Slot 2

13:第3槽 13: Slot 3

15A:第1貫通孔 15A: 1st through hole

15B:第2貫通孔 15B: Second through hole

16:假想線 16: Imaginary line

P:中心軸線 P: central axis

Claims

A sleeve for a rotary tool, comprising a cylindrical main body portion, a sleeve portion is provided at one end of the cylindrical main body portion, and a connecting portion for connecting a rotary tool is provided at the other end, The above connection part has: an insertion hole formed along the cylindrical axis of the above-mentioned main body, for insertion of the insertion block of the above-mentioned rotary tool; The first groove is formed in an annular shape on the outer peripheral surface of the connecting portion along the circumferential direction centered on the axis of the cylinder; a first through hole penetrating from the insertion hole to the first groove along the radial direction of the cylinder axis; and The second through hole is formed at a position opposite to the first through hole with the cylindrical axis as the center when viewed in the axial direction along the cylindrical axis, and extends from the insertion hole toward the first through hole along the radial direction. The above-mentioned 1st groove penetrates through, Insert the insertion block into the insertion hole in such a way that the pin insertion hole on the insertion block forms a series of holes with the first through hole and the second through hole, insert the pin into the series of holes, and make the O-ring and The above-mentioned first groove is fitted, so that the socket for the rotary tool is connected with the above-mentioned insertion block, and in the socket for the rotary tool, A second groove parallel to the first groove and formed along the circumferential direction is provided on the outer peripheral surface of the connecting portion, From the perspective of the above axis, The second groove is formed at a position overlapping with the first through hole, and is formed so that a virtual line from the axis of the cylinder toward the first through hole is shifted from the axis of the cylinder by more than ±45 degrees and less than the center of the axis of the cylinder. range of 90 degrees.

The socket for a rotary tool as described in claim 1, wherein, The depth of the second groove is equal to or greater than the depth of the first groove.

The socket for a rotary tool according to claim 1 or 2, wherein, Viewed from the axial direction along the cylinder axis, A portion of the first groove at a position overlapping the second groove has a wall on the second groove side of the first groove lower than a wall at a position not overlapping the second groove.

The sleeve for a rotary tool as described in any one of Claims 1 to 3, wherein, A third groove parallel to the first groove and formed along the circumferential direction is provided on the outer peripheral surface of the connecting portion, Viewed from the axial direction along the cylinder axis, The third groove is formed so as to overlap the second through hole, and is formed so that an imaginary line from the axis of the cylinder toward the second through hole is shifted from the axis of the cylinder by ±45 degrees or more and less than 90 degrees. within the range of time.