TW202045840A - Feed screw clutch mechanism - Google Patents

Feed screw clutch mechanism Download PDF

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Publication number
TW202045840A
TW202045840A TW109107351A TW109107351A TW202045840A TW 202045840 A TW202045840 A TW 202045840A TW 109107351 A TW109107351 A TW 109107351A TW 109107351 A TW109107351 A TW 109107351A TW 202045840 A TW202045840 A TW 202045840A
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Taiwan
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plate
shaped portion
rod
feed screw
members
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TW109107351A
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Chinese (zh)
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TWI829884B (en
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杉江隼人
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日商托普股份有限公司
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
    • F16H25/14—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation perpendicular to the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts

Abstract

Provided is a feed screw clutch mechanism that is capable of operating in a small space. This feed screw clutch mechanism 1 is provided with: first and second support members 8, 9 that move in tandem with each other between a first position P1, where a first and a second half members 6, 7 are screwed and connected together with a feed screw 2, and a second position P2, where the screw connection is released; a clutch case 4 that houses the first and second support members in such a manner as to allow both of the support members to move in tandem with each other between the first and second positions P1, P2, and that is also fixed to a drive shaft 3 which is an object to be fed; and a biasing member 10 and a cam 13 that are for switching the positions of the first and second support members 8, 9 between the first and second positions P1, P2.

Description

進給螺桿離合器機構Feed screw clutch mechanism

本發明是關於進給螺桿離合器機構，可從進給螺桿對進給對象物斷續地傳達動力。The present invention relates to a feed screw clutch mechanism, which can intermittently transmit power from a feed screw to a feed object.

以往，作為可從進給螺桿對進給對象物斷續地傳達動力的機構，有使用半構件的已為人知(例如，參閱專利文獻1)。此專利文獻1的機構是將第1、第2半構件，在形成該等與進給螺桿螺合之進給螺帽的第1位置，及使該等彼此分開解除與該進給螺桿螺合的第2位置之間切換兩者的位置。Conventionally, as a mechanism that can intermittently transmit power from a feed screw to a feed object, it has been known to use half members (for example, see Patent Document 1). The mechanism of this patent document 1 is to form the first and second half members at the first position of the feed nut screwed with the feed screw, and separate the two from each other and release the screw from the feed screw Switch the two positions between the second position.

第1、第2半構件是分別形成為大致曲柄狀，在其前端部，形成有構成對應進給螺桿之半周圍部分的部分的螺桿面，在後端部，形成有將凸輪的動作傳達至第1、第2半構件用的凸輪從動面。又，第1、第2半構件的中央部是可彼此開合的方式，被支軸所支撐。在第1、第2半構件的支軸與螺桿面的中間位置，設有將第1、第2半構件朝著封閉的方向彈推的拉力彈簧。The first and second half members are respectively formed into a substantially crank shape. At the front end portion, a screw surface constituting a portion corresponding to the half-peripheral portion of the feed screw is formed, and at the rear end portion, a screw surface is formed to transmit the movement of the cam to Cam followers for the first and second half members. In addition, the central parts of the first and second half members are capable of opening and closing each other, and are supported by a support shaft. At the intermediate positions between the support shafts of the first and second half members and the screw surface, tension springs are provided for urging the first and second half members in the closing direction.

因此，此機構是抵抗拉力彈簧的彈推力，使凸輪朝著第1、第2半構件開啟的方向動作，可藉此切斷從進給螺桿朝進給對象物之動力的傳達的切斷狀態。相反地，使凸輪朝著第1、第2半構件藉彈推力關閉的方向動作，可藉以使得從進給螺桿對於進給對象物之動力的傳達成為可連續的狀態。 [先前技術文獻] [專利文獻]Therefore, this mechanism resists the elastic thrust of the tension spring and moves the cam toward the opening direction of the first and second half members, thereby cutting off the power transmission from the feed screw to the feed object. . Conversely, by moving the cam in the direction in which the first and second half members are closed by the elastic thrust, the transmission of the power from the feed screw to the feed object can be made continuous. [Prior Technical Literature] [Patent Literature]

專利文獻1：日本專利特許第4452400號公報Patent Document 1: Japanese Patent No. 4452400

[發明所欲解決之問題][The problem to be solved by the invention]

但是，根據專利文獻1的機構，第1、第2半構件是藉著在第1位置與第2位置之間成夾持狀開合動作而可從進給螺桿對進給對象物斷續地傳達動力的機構。因此，為使該動力斷續地傳達而有確保第1、第2半構件進行夾持狀之開合動作用的空間的必要。However, according to the mechanism of Patent Document 1, the first and second half members are opened and closed in a clamping manner between the first position and the second position, so that the feed screw can intermittently feed the object. The agency that conveys momentum. Therefore, in order to transmit the power intermittently, it is necessary to secure a space for the first and second half members to perform clamping-like opening and closing operations.

本發明的目的是有鑑於相關之習知技術的課題，提供一種可在更小型的空間內動作的進給螺桿離合器機構。 [用於解決問題的手段]The object of the present invention is to provide a feed screw clutch mechanism that can operate in a smaller space in view of the related conventional technical problems. [Means used to solve the problem]

本發明的進給螺桿離合器機構，使得藉進給螺桿朝著進給方向所進給的進給對象物與該進給螺桿之間的斷續地傳達動力的離合器機構，其特徵為，具備： 第1、第2半構件，至少一方構成半螺帽； 第1、第2支撐構件，分別支撐上述第1、第2半構件，可在使該第1、第2半構件彼此接近形成與上述進給螺桿螺合的進給部的第1位置，及使該第1、第2半構件彼此分開並解除與該進給螺桿螺合的第2位置之間並進移動地彼此引導； 箱部，收容使上述第1、第2支撐構件可在上述第1、第2位置之間並進移動，並固定於上述進給對象物；及 切換手段，使上述第1、第2支撐構件在上述第1、第2位置之間並進移動。 上述切換手段，具備： 彈推構件，將上述第1、第2支撐構件朝著上述第1位置或上述第2位置的方向彈推，及 凸輪構件，具有設置在上述第1支撐構件或第1半構件的第1面及設置在上述第2支撐構件或第2半構件而與該第1面相對的第2面的雙方接觸並旋轉藉以使該第1、第2面間的間隔增減的凸輪面，藉著該間隔的增減使上述第1、第2支撐構件在上述第1、第2位置之間移動。The feed screw clutch mechanism of the present invention enables a clutch mechanism that intermittently transmits power between an object to be fed in the feed direction by the feed screw and the feed screw, and is characterized by: At least one of the first and second half members constitutes a half nut; The first and second support members respectively support the first and second half members, and may be positioned at the first position where the first and second half members are brought close to each other to form a feed portion screwed with the feed screw, and Separate the first and second half members from each other and guide each other to move in parallel between the second positions where they are screwed with the feed screw; The box part accommodates the first and second support members so that they can move in parallel between the first and second positions, and is fixed to the object to be fed; and The switching means moves the first and second support members in parallel between the first and second positions. The above-mentioned switching means have: An elastic pushing member that pushes the first and second support members toward the first position or the second position, and The cam member has a first surface provided on the first support member or the first half member and a second surface provided on the second support member or the second half member and is in contact with the first surface and rotates thereby The cam surface that increases or decreases the interval between the first and second surfaces moves the first and second support members between the first and second positions by increasing or decreasing the interval.

此構成中，藉進給螺桿進行進給對象物的進給，使凸輪構件朝著第1、第2面間的間隔增大或減少的方向旋轉，藉以使第1、第2支撐構件朝第1位置並進移動。藉此，第1、第2半構件形成進給部並成為與進給螺桿螺合的狀態。亦即，進給螺桿離合器機構是使進給對象物與進給螺桿之間的動力傳達成為可連續狀態。In this configuration, the feed screw is used to feed the object, and the cam member is rotated in the direction in which the distance between the first and second surfaces is increased or decreased, so that the first and second support members are directed toward the first 1 position moves in parallel. Thereby, the first and second half members form the feed portion and are in a state of being screwed with the feed screw. That is, the feed screw clutch mechanism makes the power transmission between the feed target and the feed screw in a continuous state.

又，此狀態下，將凸輪構件與上述第1、第2支撐構件在第1位置並進移動的場合朝相反方向旋轉，使第1、第2支撐構件朝第2位置並進移動，藉以使第1、第2半構件成為與進給螺桿的螺合解除的狀態。亦即，進給螺桿離合器機構使得從進給螺桿對於進給對象物的動力成為不能傳達的切斷狀態。Also, in this state, when the cam member and the aforementioned first and second support members move in parallel at the first position, rotate in the opposite direction, so that the first and second support members move in parallel to the second position, thereby making the first , The second half member is in a state where the screw engagement with the feed screw is released. That is, the feed screw clutch mechanism makes the power from the feed screw to the feed target into a cut-off state that cannot be transmitted.

如上述，根據本發明，將第1、第2支撐構件以第1、第2半構件的螺合面對峙的姿勢並進移動，藉此在第1、第2位置間切換第1、第2支撐構件的位置，從進給螺桿對進給對象物斷續地傳達動力。因此，第1、第2支撐構件在斷續地傳達動力時不致夾持狀進行開合動作。As described above, according to the present invention, the first and second support members are moved simultaneously in a posture where the screwing faces of the first and second half members face each other, thereby switching the first and second supports between the first and second positions. The position of the member intermittently transmits power from the feed screw to the feed target. Therefore, the first and second support members do not open and close in a pinching manner when power is transmitted intermittently.

因此，根據本發明，不需要使第1、第2支撐構件呈夾持狀朝開合方向動作用的空間，只需確保使第1、第2支撐構件僅在與第1、第2位置之間彼此並進移動的空間即可。因此，可促進採用進給離合器機構之機器的省空間化。Therefore, according to the present invention, there is no need for a space for the first and second support members to move in the opening and closing direction in a clamping shape, and it is only necessary to ensure that the first and second support members are only between the first and second positions. Space that can move in parallel with each other. Therefore, it is possible to promote the space saving of the machine using the feed clutch mechanism.

本發明中， 上述第1、第2支撐構件，分別具備： 板狀部，具有表面與背面及與該等的周緣連接的周緣面，及 複數支的棒形部，由該板狀部的背面的周緣部朝著與該背面正交的方向延伸，在其延伸的前端部，保持上述第1或第2半構件， 上述第2支撐構件的板狀部是在上述周緣面具備上述第1支撐構件的上述棒形部嵌合的嵌合凹部， 上述第1、第2支撐構件具有彼此引導可互相朝著上述並進移動的方向相對移動的引導面， 上述引導面是由上述第1、第2支撐構件在上述第1、第2位置間移動時互相彼此滑動的上述嵌合凹部、上述第1、第2支撐構件的上述棒形部的側面及上述第1半構件的側面所構成， 上述第1面是由上述第1支撐構件的上述板狀部的背面所構成， 上述第2面是由上述第2支撐構件的上述板狀部的表面所構成， 上述彈推構件是以介於上述第2支撐構件的上述板狀部的背面與上述第1半構件之間將上述第1、第2支撐構件朝著上述第1位置的方向彈推為佳。In the present invention, The above-mentioned first and second support members respectively include: The plate-shaped portion has a front surface and a back surface and a peripheral surface connected to the peripheral edges, and A plurality of rod-shaped portions extend in a direction orthogonal to the back surface from the peripheral edge portion of the back surface of the plate-shaped portion, and hold the first or second half member at the extended tip portion, The plate-shaped portion of the second support member is a fitting recess into which the rod-shaped portion of the first support member is fitted on the peripheral surface, and The first and second support members have guide surfaces that guide each other and can move relative to each other in the direction of the parallel movement, and The guide surface is the fitting recess that slides mutually when the first and second support members move between the first and second positions, the side surfaces of the rod-shaped portions of the first and second support members, and the The first half is formed by the side surface, The first surface is constituted by the back surface of the plate-shaped portion of the first support member, The second surface is formed by the surface of the plate-shaped portion of the second support member, It is preferable that the elastic pushing member is interposed between the back surface of the plate-shaped portion of the second supporting member and the first half member to push the first and second supporting members toward the first position.

據此，一邊適當實現在第1、第2支撐構件之第1、第2位置間的並進移動，並可構成小型的進給螺桿離合器機構。According to this, the simultaneous movement between the first and second positions of the first and second support members is appropriately realized, and a small-sized feed screw clutch mechanism can be constructed.

本發明中， 上述第2支撐構件的上述板狀部的板面具有矩形的形狀， 上述第2支撐構件作為上述棒形部，具備： 1支第1棒形部，剖面為矩形，上述板狀部側的端面的一邊是構成上述板面的一邊的中央部，及 2支第2棒形部，剖面為矩形，上述板狀部側的端面的一邊是構成與上述板面的上述一邊相反側的邊的兩端部， 上述第2支撐構件的上述板狀部作為上述嵌合凹部，具備： 與上述並進移動的方向垂直的剖面為直角三角形，分別設置在該板狀部的上述第1棒形部的兩側的角部的2個三角形凹部，各三角形凹部的一方的內壁構成該第1棒形部之該板狀部側端部的側面的一部分的該三角形凹部，及 與上述並進移動的方向垂直的剖面為矩形，藉著上述2支第2棒形部之與該板狀部側的端部相對的各側面形成側壁的1個矩形狀凹部， 上述第1、第2棒形部，分別具備： 設置在與上述第2支撐構件的上述板狀部相反側的端部，與上述第2半構件相對的內側面，及 從上述內側面突出的凸部， 上述第2半構件，具備： 在上述第1棒形部的上述內側面及上述2支第2棒形部的上述內側面分別相對的第1、第2側面，及 分別設置在上述第1、第2側面，使上述第1、第2棒形部的上述凸部可分別嵌合的2個凹條， 各凹條及對應的上述凸部是相對於該凹條朝沿著該凹條的方向使該凸部滑動藉此相互嵌合固定所構成， 上述第1支撐構件以具有和上述第2支撐構件相同的構成為佳。In the present invention, The plate surface of the plate-shaped portion of the second support member has a rectangular shape, The second support member as the rod-shaped portion includes: A first rod-shaped portion with a rectangular cross section, and one side of the end surface on the side of the plate-shaped portion is the center portion of the side constituting the plate surface, and The two second rod-shaped portions have a rectangular cross-section, and one side of the end surface on the side of the plate-shaped portion is both end portions constituting a side opposite to the side of the plate surface, The plate-shaped portion of the second support member serves as the fitting recess and includes: The cross section perpendicular to the direction of the above-mentioned parallel movement is a right-angled triangle, and two triangular recesses are respectively provided at the corners of both sides of the first rod-shaped portion of the plate-shaped portion, and one inner wall of each triangular recess constitutes the first 1 the triangular recessed part of the side surface of the side end of the plate-shaped part of the rod-shaped part, and The cross section perpendicular to the direction of the aforementioned parallel movement is rectangular, and each side surface of the two second rod-shaped portions opposite to the end of the plate-shaped portion forms a rectangular recessed portion of the side wall, The above-mentioned first and second rod-shaped parts respectively have: Provided on the end portion opposite to the plate-shaped portion of the second support member, the inner surface opposite to the second half member, and The convex part protruding from the inner surface, The above-mentioned second half member includes: The first and second side surfaces respectively opposed to the inner surface of the first rod-shaped portion and the inner surface of the two second rod-shaped portions, and Two concave strips respectively provided on the first and second side surfaces so that the convex portions of the first and second rod-shaped portions can be respectively fitted, Each concave strip and the corresponding convex portion are constructed by sliding the convex portion in a direction along the concave strip relative to the concave strip, thereby fitting and fixing each other, It is preferable that the said 1st support member has the same structure as the said 2nd support member.

據此，將第1支撐構件的第1、第2棒形部分別滑動嵌合於第2支撐構件的矩形狀凹部及三角形凹部，僅將第1、第2半構件的凹條滑動嵌合於第1、第2棒形部的凸部，即可結合第1、第2支撐構件與第1、第2半構件。According to this, the first and second rod-shaped portions of the first support member are slidably fitted into the rectangular recesses and triangular recesses of the second support member, and only the recesses of the first and second half members are slid and fitted into The convex portions of the first and second rod-shaped portions can connect the first and second support members with the first and second half members.

以下，使用圖示說明本發明的實施形態。圖1表示本發明之一實施形態相關的進給螺桿離合器機構。如圖1表示，此進給螺桿離合器機構1是從進給螺桿2對進給對象物斷續地傳達動力。作為進給對象物在本實施形態是相當於推壓進行點滴靜脈注射時所使用針筒之柱塞的驅動軸3。Hereinafter, the embodiments of the present invention will be described using figures. Fig. 1 shows a feed screw clutch mechanism according to an embodiment of the present invention. As shown in FIG. 1, this feed screw clutch mechanism 1 transmits power from the feed screw 2 to the feed object intermittently. The object to be fed in this embodiment is equivalent to the drive shaft 3 that pushes the plunger of the syringe used for intravenous drip injection.

進給螺桿離合器機構1具備作為收容其主要部之箱部的離合器箱4。離合器箱4是被2支滑動軸5朝進給方向所引導。The feed screw clutch mechanism 1 includes a clutch box 4 as a box section accommodating its main parts. The clutch box 4 is guided by two sliding shafts 5 in the feed direction.

圖2表示進給螺桿離合器機構1的內部。如圖2表示，進給螺桿離合器機構1具備：分別構成半螺帽的第1、第2半構件6、7，及將第1、第2半構件6、7以各個螺合面對峙的姿勢支撐，並在後述的第1位置P1(參閱圖6)與第2位置P2(參閱圖7)之間並進移動地互相彼此引導的第1、第2支撐構件8、9。FIG. 2 shows the inside of the feed screw clutch mechanism 1. As shown in Figure 2, the feed screw clutch mechanism 1 is provided with: the first and second half members 6 and 7 respectively constituting the half nut, and the posture where the first and second half members 6 and 7 face each other in screw engagement Support and guide the first and second support members 8 and 9 mutually moving in parallel between a first position P1 (see FIG. 6) and a second position P2 (see FIG. 7) described later.

離合器箱4是收容第1、第2支撐構件8、9可在第1、第2位置P1、P2之間並進移動。離合器箱4是固定於驅動軸3。並且，進給螺桿離合器機構1具備斷續切換手段，使第1、第2支撐構件8、9在第1、第2位置P1、P2之間並進移動藉此在第1、第2位置P1、P2之間切換第1、第2支撐構件8、9的位置。The clutch box 4 accommodates the first and second support members 8, 9 to be able to move in parallel between the first and second positions P1 and P2. The clutch box 4 is fixed to the drive shaft 3. In addition, the feed screw clutch mechanism 1 is provided with intermittent switching means to move the first and second support members 8, 9 in parallel between the first and second positions P1, P2, and thereby move between the first and second positions P1 and P1. The positions of the first and second support members 8, 9 are switched between P2.

第1位置P1是第1、第2半構件6、7彼此接近或抵接形成與進給螺桿2螺合之進給部的位置。第2位置P2為第1、第2半構件6、7彼此分開解除與進給螺桿2的螺合的位置。圖2表示第1、第2支撐構件8、9位在第1位置P1時的狀態。The first position P1 is a position where the first and second half members 6 and 7 approach or abut each other to form a feed portion screwed with the feed screw 2. The second position P2 is a position where the first and second half members 6 and 7 are separated from each other and the screw engagement with the feed screw 2 is released. FIG. 2 shows the state when the first and second support members 8, 9 are in the first position P1.

斷續切換手段，具備：將第1、第2支撐構件8、9朝著第1位置P1的方向彈推的彈推構件10；分別設在在第1、第2支撐構件8、9並相對的第1、第2面11、12；及位在第1、第2面11、12之間的凸輪構件13。作為彈推構件10，本實施形態使用壓縮盤簧(參閱圖6)。 凸輪構件13具有藉著與第1、第2面11、12的雙方接觸並旋轉使第1、第2面11、12間的間隔增減的凸輪面。並且，藉著該間隔的增減，凸輪構件13使第1、第2支撐構件8、9在第1、第2位置P1、P2之間移動。凸輪構件13的旋轉是將前端部插入凸輪構件13後固定，藉著通過驅動軸3內的離合器軸14旋轉來進行。Intermittent switching means, including: the first and second support members 8, 9 to the direction of the first position P1 spring pushing member 10; respectively provided in the first and second support members 8, 9 and opposite The first and second surfaces 11, 12; and the cam member 13 located between the first and second surfaces 11, 12. As the urging member 10, a compression coil spring is used in this embodiment (see FIG. 6). The cam member 13 has a cam surface that increases or decreases the interval between the first and second surfaces 11 and 12 by rotating in contact with both of the first and second surfaces 11 and 12. Then, the cam member 13 moves the first and second support members 8 and 9 between the first and second positions P1 and P2 by the increase or decrease of the interval. The rotation of the cam member 13 is performed by inserting the front end portion of the cam member 13 into the cam member 13 and fixing it by rotating the clutch shaft 14 in the drive shaft 3.

圖3表示第1、第2支撐構件8、9。如圖3表示，第1、第2支撐構件8、9具備：具有表面8a與背面8b及連接該等的周緣的周緣面15的板狀部16，及從板狀部16的背面8b周緣部朝著與該背面8b正交的方向延伸的複數支(本實施形態為3支)的棒形部17。該等棒形部17在前端部保持第1半構件6或第2半構件7。板狀部16具有板面為矩形的形狀。本實施形態中，第1、第2支撐構件8、9具有相同的構成及形狀。Fig. 3 shows the first and second supporting members 8, 9. As shown in Figure 3, the first and second support members 8, 9 are provided with a plate-shaped portion 16 having a surface 8a and a back surface 8b and a peripheral surface 15 connecting the peripheral edges, and a peripheral portion from the back surface 8b of the plate-shaped portion 16 A plurality of rod-shaped portions 17 (three in this embodiment) extending in a direction orthogonal to the back surface 8b. The rod-shaped portions 17 hold the first half member 6 or the second half member 7 at the front end portion. The plate-shaped portion 16 has a rectangular plate surface. In this embodiment, the first and second support members 8, 9 have the same configuration and shape.

第2支撐構件9的板狀部16在周緣面具備第1支撐構件8之棒形部17嵌合的嵌合凹部25(參閱圖5)。第1、第2支撐構件8、9具有彼此引導可互相朝著上述並進移動的方向相對移動的引導面24。The plate-shaped portion 16 of the second support member 9 is provided with a fitting recess 25 (see FIG. 5) into which the rod-shaped portion 17 of the first support member 8 is fitted on the peripheral surface. The first and second support members 8 and 9 have guide surfaces 24 that guide each other and can move relative to each other in the aforementioned parallel movement direction.

引導面24是由第1、第2支撐構件8、9在第1、第2位置P1、P2間的移動時互相彼此滑動之嵌合凹部25、第1、第2支撐構件8、9的棒形部17的側面及第1半構件6的側面所構成。The guide surface 24 is a rod of the fitting recess 25 and the first and second support members 8, 9 that slide each other when the first and second support members 8 and 9 move between the first and second positions P1 and P2. The side surface of the shaped portion 17 and the side surface of the first half member 6 are formed.

與凸輪構件13的凸輪面接觸的第1面11是由第1支撐構件8的板狀部16的背面8b所構成，第2面12是由第2支撐構件9的板狀部16的表面8a所構成。彈推構件10是介於第2支撐構件9的板狀部16的背面與第1半構件6之間將第1、第2支撐構件8、9朝第1位置P1的方向彈推。The first surface 11 in contact with the cam surface of the cam member 13 is formed by the back surface 8b of the plate portion 16 of the first support member 8, and the second surface 12 is formed by the surface 8a of the plate portion 16 of the second support member 9. Constituted. The biasing member 10 is interposed between the back surface of the plate-shaped portion 16 of the second supporting member 9 and the first half member 6 to bias the first and second supporting members 8 and 9 in the direction of the first position P1.

第1、第2支撐構件8、9具備：剖面為矩形，板狀部16側的端面的一邊構成該板面之一邊中央部的1支第1棒形部17a，及剖面為矩形，板狀部16側的端面的一邊構成與該板面的上述一邊相反側之一邊的兩端部的2支第2棒形部17b以作為棒形部17。The first and second support members 8, 9 are provided with: a rectangular cross-section, one side of the end surface on the side of the plate-shaped portion 16 constitutes a first rod-shaped portion 17a at the center of one side of the plate surface, and a rectangular cross-section, plate-shaped One side of the end surface on the side of the portion 16 constitutes two second rod-shaped portions 17 b at both ends of one side opposite to the above-mentioned one side of the plate surface as the rod-shaped portions 17.

板狀部16具備與上述並進移動的方向垂直的剖面為直角三角形，並分別設置在板狀部16的第1棒形部17a兩側的角部的2個三角形凹部25a以作為嵌合凹部25。三角形凹部25a是將各三角形凹部25a一方的內壁構成第1棒形部17a的板狀部16側端部之側面的一部分。The plate-shaped portion 16 has a right-angled triangle in a cross section perpendicular to the direction of the aforementioned parallel movement, and two triangular recesses 25a are provided at the corners on both sides of the first rod-shaped portion 17a of the plate-shaped portion 16 as the fitting recesses 25. . The triangular recessed portion 25a is a part of the side surface of the plate-shaped portion 16 side end portion of the first rod-shaped portion 17a that constitutes one inner wall of each triangular recessed portion 25a.

又，板狀部16具備與上述並進移動的方向垂直的剖面為矩形，並藉著2支第2棒形部17b與板狀部16側的端部相對的各側面形成側壁的1個矩形凹部25b作為嵌合凹部25。In addition, the plate-shaped portion 16 has a rectangular cross-section perpendicular to the direction of the aforementioned parallel movement, and each side surface of the two second rod-shaped portions 17b opposite to the end of the plate-shaped portion 16 forms a rectangular recessed portion of the side wall. 25b serves as a fitting recess 25.

第1、第2支撐構件8的第1、第2棒形部17a、17b分別具備設置在與第1、第2支撐構件8的板狀部16相反側的端部，與第1、第2半構件7相對的內側面，及從內側面突出的凸部18。The first and second rod-shaped portions 17a, 17b of the first and second support members 8 are provided with end portions provided on the opposite side to the plate-shaped portion 16 of the first and second support members 8, respectively. The opposite inner surface of the half member 7 and the convex portion 18 protruding from the inner surface.

圖4A及圖4B表示從不同方向看第1、第2半構件6、7的樣子。如圖4A及圖4B表示，第1、第2半構件6、7具備：分別與第1棒形部17a的內側面及2支第2棒形部17b的內側面相對的第1、第2側面26、27，及分別設置在第1、第2側面26、27，分別可嵌合第1、第2棒形部17a、17b的凸部18的2個凹條21。4A and 4B show how the first and second half members 6 and 7 are viewed from different directions. As shown in FIGS. 4A and 4B, the first and second half members 6, 7 are provided with first and second halves that are opposed to the inner surface of the first rod-shaped portion 17a and the inner surface of the two second rod-shaped portions 17b, respectively. The side surfaces 26, 27, and the first and second side surfaces 26, 27, respectively, can fit the two concave strips 21 of the convex portion 18 of the first and second rod-shaped portions 17a, 17b, respectively.

各凹條21及對應的凸部18是使該凸部18相對於該凹條21沿著該凹條21的方向滑動藉此構成彼此嵌合並固定。Each concave strip 21 and the corresponding convex portion 18 slide the convex portion 18 relative to the concave strip 21 along the direction of the concave strip 21 to form a fitting and fixing to each other.

第1、第2半構件6、7具有：作為矩形的螺合面的表面及其相反側的背面，及分別連接該等4邊的4個側面的長方體形的形狀。在第1、第2半構件6、7的表面側形成有構成與進給螺桿2螺合的進給螺帽之螺紋的半周圍量的半螺紋19，其周圍方向兩端部形成倒角後的倒角部20。沿著上述4個側面之中的進給螺桿2的長方向的2個面為上述的第1、第2側面26、27。The first and second halves 6 and 7 have a rectangular screw face surface and a back surface on the opposite side thereof, and a rectangular parallelepiped shape connecting the four side surfaces of the four sides, respectively. On the surface sides of the first and second half members 6, 7 are formed half threads 19 that constitute half the circumference of the thread of the feed nut screwed with the feed screw 2, and both ends of the peripheral direction are chamfered. The chamfer 20. The two surfaces along the longitudinal direction of the feed screw 2 among the four side surfaces are the first and second side surfaces 26 and 27 described above.

圖4B表示從與圖4A不同的方向看第1、第2半構件6、7的樣子。如圖4B表示，在第1、第2半構件6、7的背面設有圓形凹部22。第1半構件6的圓形凹部22具有可承接彈推構件10的功能。FIG. 4B shows how the first and second half members 6 and 7 are viewed from a different direction from FIG. 4A. As shown in FIG. 4B, circular recesses 22 are provided on the back surfaces of the first and second half members 6 and 7. The circular recess 22 of the first half member 6 has a function of receiving the elastic member 10.

圖5表示組合第1、第2支撐構件8、9及第1、第2半構件6、7的樣子。此組合是例如進行如下。亦即，首先如圖5表示，使第1支撐構件8的棒形部17一邊在第2支撐構件9的嵌合凹部25滑動並將第1支撐構件8嵌合於第2支撐構件9。Fig. 5 shows how the first and second support members 8, 9 and the first and second half members 6, 7 are combined. This combination is performed as follows, for example. That is, first, as shown in FIG. 5, the rod-shaped portion 17 of the first support member 8 is slid on the fitting recess 25 of the second support member 9 to fit the first support member 8 to the second support member 9.

接著，在第1、第2支撐構件9的棒形部17的凸部18，嵌合第1、第2半構件6、7的凹條21。藉此，將第1、第2半構件6、7以各個螺合面對峙的姿勢被第1、第2支撐構件8、9所支撐而成為組合的狀態。Next, the concave strips 21 of the first and second half members 6 and 7 are fitted to the convex portions 18 of the rod-shaped portions 17 of the first and second support members 9. Thereby, the first and second half members 6 and 7 are supported by the first and second support members 8 and 9 in a posture in which the screwing faces face to each other to be in a combined state.

將組合後的第1、第2支撐構件8、9及第1、第2半構件6、7組裝於驅動軸3與進給螺桿2的操作是例如以下所進行。亦即，首先，在第1、第2支撐構件8、9的板狀部16之間配置凸輪構件13，在第2支撐構件9的板狀部16與第1半構件6之間配置彈推構件10。藉此，彈推構件10將第1、第2支撐構件8、9朝著第1位置P1的方向彈推，因此使第1、第2半構件6、7彼此接觸而形成與進給螺桿2螺合之進給螺帽的狀態，構成進給螺桿離合器機構1的主要部。The operation of assembling the combined first and second support members 8, 9 and the first and second half members 6, 7 to the drive shaft 3 and the feed screw 2 is performed as follows, for example. That is, first, the cam member 13 is arranged between the plate-like portions 16 of the first and second support members 8, 9, and the spring pusher is arranged between the plate-like portion 16 of the second support member 9 and the first half member 6. Component 10. Thereby, the elastic pushing member 10 pushes the first and second support members 8, 9 toward the direction of the first position P1, so that the first and second half members 6, 7 are brought into contact with each other to form a contact with the feed screw 2. The state of the screwed feed nut constitutes the main part of the feed screw clutch mechanism 1.

接著，將此主要部收納於離合器箱4。並且，藉滑動軸5一邊引導離合器箱4，一邊使進給螺桿2與上述所形成的進給螺帽螺合，進行旋轉。藉此，將離合器箱4定位於驅動軸3的端部，使通過驅動軸3的內部的離合器軸14連結於凸輪構件13。藉此，完成進給螺桿離合器機構1的組裝。Next, this main part is housed in the clutch box 4. In addition, while guiding the clutch case 4 by the sliding shaft 5, the feed screw 2 is screwed with the feed nut formed above to rotate. Thereby, the clutch box 4 is positioned at the end of the drive shaft 3 and the clutch shaft 14 passing through the inside of the drive shaft 3 is connected to the cam member 13. With this, the assembly of the feed screw clutch mechanism 1 is completed.

圖6及圖7表示進給螺桿離合器機構1的動作。如圖6表示，凸輪構件13對應離合器軸14的旋轉角度，定位在第1支撐構件8的第1面11及第2支撐構件9的第2面12之間的距離成為最小的旋轉位置時，第1、第2支撐構件8、9是藉彈推構件10的彈推力定位於第1位置P1。6 and 7 show the operation of the feed screw clutch mechanism 1. As shown in FIG. 6, when the cam member 13 is positioned at the rotational position where the distance between the first surface 11 of the first support member 8 and the second surface 12 of the second support member 9 becomes the smallest in accordance with the rotation angle of the clutch shaft 14, The first and second support members 8 and 9 are positioned at the first position P1 by the elastic thrust of the elastic member 10.

藉此，進給螺桿離合器機構1成為使第1、第2半構件6、7彼此接觸，形成與進給螺桿2螺合的進給螺帽的連接狀態。在此狀態下，旋轉進給螺桿2，藉著控制旋轉量，可將驅動軸3驅動至任意的位置。Thereby, the feed screw clutch mechanism 1 is brought into contact with the first and second half members 6 and 7 to form a feed nut screwed to the feed screw 2 in a connected state. In this state, by rotating the feed screw 2, the drive shaft 3 can be driven to any position by controlling the amount of rotation.

另一方面，如圖7表示，旋轉離合器軸14，將第1支撐構件8的第1面11與第2支撐構件9的第2面12之間的距離定位在成為最大的旋轉位置時，第1、第2支撐構件8、9位在第2位置P2。藉此，進給螺桿離合器機構1使第1、第2半構件6、7彼此分離，成為使得與進給螺桿2螺合解除的切斷狀態。On the other hand, as shown in FIG. 7, when the clutch shaft 14 is rotated to position the distance between the first surface 11 of the first support member 8 and the second surface 12 of the second support member 9 at the maximum rotational position, the first 1. The second support members 8, 9 are at the second position P2. Thereby, the feed screw clutch mechanism 1 separates the first and second half members 6 and 7 from each other and enters a cut-off state in which the screw engagement with the feed screw 2 is released.

藉此，推壓注射泵的柱塞的驅動軸3可自由地朝沿著滑動軸5的進給方向移動。藉此，例如，可相對於柱塞容易地使驅動軸3密接而連接。Thereby, the drive shaft 3 pushing the plunger of the syringe pump can freely move in the feeding direction along the sliding shaft 5. Thereby, for example, the drive shaft 3 can be easily connected to the plunger in close contact.

如以上說明，根據本實施形態，將第1、第2支撐構件8、9以第1、第2半構件6、7的螺合面對峙的姿勢並進移動，藉以使第1、第2支撐構件8、9的位置在第1、第2位置P1、P2間切換。藉此切換，使相對於從進給螺桿2之驅動軸3的動力斷續地傳達。因此，第1、第2支撐構件8、9在動力斷續地傳達時不致成夾持狀進行開合動作。As explained above, according to the present embodiment, the first and second supporting members 8, 9 are moved in parallel in a posture where the screwing surfaces of the first and second half members 6, 7 face each other, so that the first and second supporting members The positions of 8, 9 are switched between the first and second positions P1 and P2. By this switching, the power to the drive shaft 3 from the feed screw 2 is transmitted intermittently. Therefore, the first and second support members 8, 9 do not open and close in a pinching shape when power is intermittently transmitted.

藉此，第1、第2支撐構件8、9不需要成夾持狀朝開合方向動作用的空間，只需有確保使第1、第2支撐構件8、9僅在第1、第2位置P1、P2之間彼此並進移動的空間即可。因此，可促進採用進給螺桿離合器機構1之機器的省空間化。Thereby, the first and second support members 8, 9 do not need to be clamped in the opening and closing direction of the space, only need to ensure that the first and second support members 8, 9 only in the first and second The space between the positions P1 and P2 moves in parallel with each other. Therefore, it is possible to promote the space saving of the machine using the feed screw clutch mechanism 1.

以上，雖已說明本發明的實施形態，但本發明不限於此。例如，本發明的進給螺桿離合器機構在藉滾珠螺桿進行進給對象物的進給時，可運用於切換進給螺桿，及與半構件所構成的進給螺帽之間的斷續所必需的種種的場合。As mentioned above, although the embodiment of this invention has been described, this invention is not limited to this. For example, when the feed screw clutch mechanism of the present invention uses a ball screw to feed an object, it can be used to switch the feed screw and be necessary for the interruption between the feed screw and the feed nut composed of half members. Various occasions.

又，切換手段的彈推構件也可以是將第1、第2支撐構件朝著第2位置的方向彈推。此時，作為凸輪構件，採用藉著增大設置於第1支撐構件或第1半構件的第1面，及設置於第2支撐構件或第2半構件的第2面之間的間隔使第1、第2支撐構件朝第1位置P1移動，並藉減少而朝著第2位置P2移動。In addition, the bounce member of the switching means may bounce the first and second support members toward the second position. At this time, as the cam member, by increasing the interval between the first surface provided on the first support member or the first half member and the second surface provided on the second support member or the second half member, 1. The second support member moves toward the first position P1, and moves toward the second position P2 by decreasing.

又，也可以僅第1、第2半構件6、7之中的一方構成半螺帽。此時，另一方只需推壓進給螺桿2螺合於該一方的半螺帽即可。並且，第1面、第2面也可以設置在第1半構件或第2半構件。In addition, only one of the first and second half members 6 and 7 may constitute a half nut. At this time, the other party only needs to push the half nut of the feed screw 2 screwed on the one party. In addition, the first surface and the second surface may be provided on the first half member or the second half member.

1:進給螺桿離合器機構 2:進給螺桿 3:驅動軸 4:離合器箱 5:滑動軸 6:第1半構件 7:第2半構件 8:第1支撐構件 8a:表面 8b:背面 9:第2支撐構件 10:彈推構件 11:第1面 12:第2面 13:凸輪構件 14:離合器軸 15:周緣面 16:板狀部 17:棒形部 17a:第1棒形部 17b:第2棒形部 18:凸部 19:半螺紋 20:倒角部 21:凹條 22:圓形凹部 24:引導面 25:嵌合凹部 25a:三角形凹部 25b:矩形凹部 26:第1側面 27:第2側面 P1:第1位置 P2:第2位置1: Feed screw clutch mechanism 2: Feed screw 3: drive shaft 4: Clutch box 5: Sliding shaft 6: The first half 7: The second half 8: The first support member 8a: surface 8b: back 9: The second support member 10: Spring push member 11: Side 1 12: Side 2 13: Cam member 14: Clutch shaft 15: peripheral surface 16: plate part 17: Rod 17a: The first rod 17b: The second rod part 18: Convex 19: Half thread 20: Chamfer 21: concave strip 22: round recess 24: guide surface 25: Fitting recess 25a: Triangular recess 25b: Rectangular recess 26: side 1 27: second side P1: 1st position P2: 2nd position

[圖1]表示本發明一實施形態相關之進給螺桿離合器機構的透視圖。 [圖2]表示圖1之進給螺桿離合器機構的內部的透明圖。 [圖3]表示圖1之進給螺桿離合器機構的第1、第2支撐構件的透視圖。 [圖4A]表示圖1之進給螺桿離合器機構的第1、第2半構件的透視圖。 [圖4B]表示從其他的方向看該第1、第2半構件的透視圖。 [圖5]表示組合圖1之進給螺桿離合器機構的第1、第2支撐構件及第1、第2半構件的樣子的透視圖。 [圖6]表示進給螺桿離合器機構的第1、第2支撐構件位於第1位置的樣子的圖。 [圖7]表示進給螺桿離合器機構的第1、第2支撐構件位於第2位置的樣子的圖。[Fig. 1] A perspective view showing a feed screw clutch mechanism related to an embodiment of the present invention. [Fig. 2] A transparent view showing the inside of the feed screw clutch mechanism of Fig. 1. [Fig. [Fig. 3] A perspective view showing the first and second support members of the feed screw clutch mechanism of Fig. 1. [Fig. [Fig. 4A] A perspective view showing the first and second half members of the feed screw clutch mechanism of Fig. 1. [Fig. [FIG. 4B] A perspective view of the first and second half members viewed from another direction. [FIG. 5] A perspective view showing how the first and second support members and the first and second half members of the feed screw clutch mechanism of FIG. 1 are combined. [Fig. 6] A diagram showing a state where the first and second support members of the feed screw clutch mechanism are located at the first position. [Fig. 7] A diagram showing a state where the first and second support members of the feed screw clutch mechanism are located at the second position.

1:進給螺桿離合器機構 1: Feed screw clutch mechanism

2:進給螺桿 2: Feed screw

3:驅動軸 3: drive shaft

4:離合器箱 4: Clutch box

5:滑動軸 5: Sliding shaft

6:第1半構件 6: The first half

7:第2半構件 7: The second half

8:第1支撐構件 8: The first support member

9:第2支撐構件 9: The second support member

10:彈推構件 10: Spring push member

11:第1面 11: Side 1

12:第2面 12: Side 2

13:凸輪構件 13: Cam member

14:離合器軸 14: Clutch shaft

Claims (3)

一種進給螺桿離合器機構，係使得藉進給螺桿朝著進給方向所進給的進給對象物與該進給螺桿之間的斷續地傳達動力，其特徵為，具備： 第1、第2半構件，至少一方構成半螺帽； 第1、第2支撐構件，分別支撐上述第1、第2半構件，在使該第1、第2半構件彼此接近形成與上述進給螺桿螺合的進給部的第1位置，及使該第1、第2半構件彼此分開並解除與該進給螺桿螺合的第2位置之間並進移動地彼此引導； 箱部，收容使上述第1、第2支撐構件在上述第1、第2位置之間並進移動，並固定於上述進給對象物；及 切換手段，使上述第1、第2支撐構件在上述第1、第2位置之間並進移動， 上述切換手段，具備： 彈推構件，將上述第1、第2支撐構件朝著上述第1位置或上述第2位置的方向彈推，及 凸輪構件，具有設置在上述第1支撐構件或第1半構件的第1面及設置在上述第2支撐構件或第2半構件而與該第1面相對的第2面的雙方接觸並旋轉藉以使該第1、第2面間的間隔增減的凸輪面，藉著該間隔的增減使上述第1、第2支撐構件在上述第1、第2位置之間移動。A feed screw clutch mechanism is used to intermittently transmit power between a feed object fed in the feed direction by a feed screw and the feed screw, which is characterized by: At least one of the first and second half members constitutes a half nut; The first and second support members respectively support the first and second half members, and the first and second half members are brought close to each other to form the first position of the feed portion screwed with the feed screw, and The first and second half members are separated from each other and guide each other in parallel movement between the second positions where they are released from screwing with the feed screw; The box part accommodates the aforementioned first and second support members to move in parallel between the aforementioned first and second positions, and is fixed to the aforementioned feed object; and Switching means to move the first and second support members in parallel between the first and second positions, The above-mentioned switching means have: An elastic pushing member that pushes the first and second support members toward the first position or the second position, and The cam member has a first surface provided on the first support member or the first half member and a second surface provided on the second support member or the second half member and is in contact with the first surface and rotates thereby The cam surface that increases or decreases the interval between the first and second surfaces moves the first and second support members between the first and second positions by increasing or decreasing the interval. 如請求項1記載的進給螺桿離合器機構，其中， 上述第1、第2支撐構件，分別具備： 板狀部，具有表面與背面及與該等的周緣連接的周緣面，及 複數支的棒形部，由該板狀部的背面的周緣部朝著與該背面正交的方向延伸，在其延伸的前端部，保持上述第1或第2半構件， 上述第2支撐構件的板狀部在上述周緣面具備上述第1支撐構件的上述棒形部嵌合的嵌合凹部， 上述第1、第2支撐構件具有彼此引導可互相朝著上述並進移動的方向相對移動的引導面， 上述引導面是由上述第1、第2支撐構件在上述第1、第2位置間移動時互相彼此滑動的上述嵌合凹部、上述第1、第2支撐構件的上述棒形部的側面及上述第1半構件的側面所構成， 上述第1面是由上述第1支撐構件的上述板狀部的背面所構成， 上述第2面是由上述第2支撐構件的上述板狀部的表面所構成， 上述彈推構件是介於上述第2支撐構件的上述板狀部的背面與上述第1半構件之間將上述第1、第2支撐構件朝著上述第1位置的方向彈推。The feed screw clutch mechanism described in claim 1, wherein: The above-mentioned first and second support members respectively include: The plate-shaped portion has a front surface and a back surface and a peripheral surface connected to the peripheral edges, and A plurality of rod-shaped portions extend in a direction orthogonal to the back surface from the peripheral edge portion of the back surface of the plate-shaped portion, and hold the first or second half member at the extended tip portion, The plate-shaped portion of the second support member is provided with a fitting recess on the peripheral surface into which the rod-shaped portion of the first support member is fitted, and The first and second support members have guide surfaces that guide each other and can move relative to each other in the direction of the parallel movement, and The guide surface is the fitting recess that slides mutually when the first and second support members move between the first and second positions, the side surfaces of the rod-shaped portions of the first and second support members, and the The first half is formed by the side surface, The first surface is constituted by the back surface of the plate-shaped portion of the first support member, The second surface is formed by the surface of the plate-shaped portion of the second support member, The biasing member is interposed between the back surface of the plate-shaped portion of the second supporting member and the first half member to bias the first and second supporting members toward the first position. 如請求項2記載的進給螺桿離合器機構，其中， 上述第2支撐構件的上述板狀部的板面具有矩形的形狀， 上述第2支撐構件作為上述棒形部，具備： 1支第1棒形部，剖面為矩形，上述板狀部側的端面的一邊是構成上述板面的一邊的中央部，及 2支第2棒形部，剖面為矩形，上述板狀部側的端面的一邊是構成與上述板面的上述一邊相反側的邊的兩端部， 上述第2支撐構件的上述板狀部作為上述嵌合凹部，具備： 與上述並進移動的方向垂直的剖面為直角三角形，分別設置在該板狀部的上述第1棒形部的兩側的角部的2個三角形凹部，各三角形凹部的一方的內壁構成該第1棒形部之該板狀部側端部的側面的一部分的該三角形凹部，及 與上述並進移動的方向垂直的剖面為矩形，藉著上述2支第2棒形部之與該板狀部側的端部相對的各側面形成側壁的1個矩形狀凹部， 上述第1、第2棒形部，分別具備： 設置在與上述第2支撐構件的上述板狀部相反側的端部，與上述第2半構件相對的內側面，及 從上述內側面突出的凸部， 上述第2半構件，具備： 在上述第1棒形部的上述內側面及上述2支第2棒形部的上述內側面分別相對的第1、第2側面，及 分別設置在上述第1、第2側面，使上述第1、第2棒形部的上述凸部可分別嵌合的2個凹條， 各凹條及對應的上述凸部是相對於該凹條朝沿著該凹條的方向使該凸部滑動藉此相互嵌合固定所構成， 上述第1支撐構件具有和上述第2支撐構件相同的構成。The feed screw clutch mechanism described in claim 2, wherein: The plate surface of the plate-shaped portion of the second support member has a rectangular shape, The second support member as the rod-shaped portion includes: A first rod-shaped portion with a rectangular cross section, and one side of the end surface on the side of the plate-shaped portion is the center portion of the side constituting the plate surface, and The two second rod-shaped portions have a rectangular cross-section, and one side of the end surface on the side of the plate-shaped portion is both end portions constituting a side opposite to the side of the plate surface, The plate-shaped portion of the second support member serves as the fitting recess and includes: The cross section perpendicular to the direction of the above-mentioned parallel movement is a right-angled triangle, and two triangular recesses are respectively provided at the corners of both sides of the first rod-shaped portion of the plate-shaped portion, and one inner wall of each triangular recess constitutes the first 1 the triangular recessed part of the side surface of the side end of the plate-shaped part of the rod-shaped part, and The cross section perpendicular to the direction of the aforementioned parallel movement is rectangular, and each side surface of the two second rod-shaped portions opposite to the end of the plate-shaped portion forms a rectangular recessed portion of the side wall, The above-mentioned first and second rod-shaped parts respectively have: Provided on the end portion opposite to the plate-shaped portion of the second support member, the inner surface opposite to the second half member, and The convex part protruding from the inner surface, The above-mentioned second half member includes: The first and second side surfaces respectively opposed to the inner surface of the first rod-shaped portion and the inner surface of the two second rod-shaped portions, and Two concave strips respectively provided on the first and second side surfaces so that the convex portions of the first and second rod-shaped portions can be respectively fitted, Each concave strip and the corresponding convex portion are constructed by sliding the convex portion in a direction along the concave strip relative to the concave strip, thereby fitting and fixing each other, The first support member has the same configuration as the second support member.
TW109107351A 2019-03-07 2020-03-06 Feed screw clutch mechanism TWI829884B (en)

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JP2950589B2 (en) * 1990-07-05 1999-09-20 レッキス工業株式会社 Automatic feeder for thread cutting machine
US5106375A (en) * 1991-05-23 1992-04-21 Ivac Corporation Dynamic lead screw engagement and indicator
CA2554503C (en) 2004-03-19 2009-06-23 Medtronic Minimed, Inc. Lead screw driven syringe with an integral split plunger nut and method of using the same
JP2011140082A (en) 2010-01-06 2011-07-21 Kosoku Electric Co Ltd Bar cutter
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