201000711 六、發明說明： 【發明所屬之技術領域】 本發明係關於例如拷克車等工業用縫紉機之驅動裝 置。更詳言之，係關於工業用縫匆機之驅動裝置，其從縫 :機本體側部朝向外方突出之縫切機主轴與配置於該縫幼 機本體側面部並固定支承於往該縫切機本體後方部延伸之 馬達安裝台後部之縫纫機驅動用馬達的輸出軸，係藉由固 ^該等兩轴之有齒滑輪及捲掛於該等有齒滑輪間之有齒 帶連動連結，且於該馬達安裝台與縫匆機本體之間，設 有可將馬達安裝台安裝成對縫匆機本體於變更該兩軸間之 距離以㈣該有齒皮帶之張力的方向位置移動與固定自如 之螺栓等安裝台固定手段。 【先前技術】 具備上述基本構成之工業用縫紉機之驅動裝置中，若 掛；□定在縫初機主軸之有齒滑輪與@定在馬達輸出轴 2有齒滑輪間之有齒皮帶的張力過強，施加於縫切機主轴 ;:達之負荷即較大’會有馬達異常發熱、或皮帶在短時 :用即斷裂之虞。另一“，若有齒皮帶之張力過弱， 曰產生皮帶呈波浪狀起伏或對滑輪打滑等無法確保穩定 、：好動力傳遞性能的問題。為了消除此種問豸，在將馬 達安裝台安裝於縫紉機本體側面之初期組裝完成時，該有 齒皮帶之張力已被適當調整至為重要。 以彺，此種有齒皮帶之張力調整手段，已知有如 3 201000711 M270186號專利公報所揭示，藉由螺栓等將位置固定自如 之馬達安襞板設置於縫紉機本體之側面，並於該馬達安裝 板與該縫紉機本體側面之間，設置可藉由在馬達側從其輸 出軸周圍之複數個部位突出，並插通於形成在該馬達安裝 板之單孔及以該單孔為中心所形成之同心圓長孔之螺栓等 複數支螺栓軸螺合固定之支承板，透過調節螺检等調節元 件之操#，使該支承板對該馬達安裝才反以該複數支螺检轴 中之一支螺栓軸為中心旋轉，並以任意之旋轉角固定，藉 此變更該馬達之輸出軸與縫匆機本體側之缝初機主轴的^ 離，而可調整捲掛於固定在兩軸之滑輪間之皮帶的張力。 然而，上述專利文獻i所揭示之皮帶張力調整手段， 除了馬達安裝板以外，必須具有實質上用以固定支承馬達 之支承板、將該支承板可旋轉固定地安裝於馬達安裝板之 ，數支螺栓等螺栓軸、用以螺合固定該等螺栓軸而形成於 支承板之複數個螺孔、用以將該支承板對 固定操作之調整螺栓等調整元 /扳疑轉 I杜勃曰. 几仵4為數眾多之構成要素及 零件數1，張力調整手段之構造變得非常複雜。其妹果， 不僅增加整體驅動裝置之組裝 衣丄日等，在組裝後之古帶 調整，亦必須耗費諸多操作勞 " 整時，甚重之馬達的重量传Γ 且，由於皮帶張力調 違的重里係以-支螺栓軸為中心之旋轉力 負何，必須與該負荷力矩抗衡來 件，因此產生在皮帶張力調整 "、栓“即凡 啊堂冩要較大之操作力等問題。 【發明内容】 4 201000711 本發明係有鐘於上述實情而為，目的在於提供盡可能 削減構成要素及零件數量’可謀求構造之簡單化及整體裝 置組裝工時之減少，且能既容易又輕快地以較少勞力及較 少操作力進行既定皮帶張力之調整之工業用縫紉機之驅動 裝置。 為達成上述目的，本發明之工業用缝紉機之驅動裝 置，其從缝紉機本體侧部朝向外方突出之縫紉機主軸與配 置於該縫紉機本體側面部且固定支承於往該縫紉機本體後 方。卩延伸之馬達安裝台後部之縫紉機驅動用馬達的輸出 軸，係藉由固定於該等兩軸之有齒滑輪及捲掛於該等有齒 滑輪間之有帶連動連，结，且於該馬達安冑台與縫幼機 本體之間，α有可將馬達安裝台安裝成對縫匆機本體於變 更忒兩軸間之距離以調整該有齒皮帶之張力的方向位置移 動與固定自如之螺栓等安裝台固定手段，其特徵在於：於 該縫紉機本體之侧面部，安裝有可在正交於該馬達安裝台 之位置移動方向之軸心周圍旋轉操作的偏心凸輪，另一方 面於該馬達安裝台形成有具有滑接於該偏心凸輪之外周面 的内周緣部孔，藉由使該複數個安裝台固定手段為馬達安 裝台可對㈣機本體位置移動之狀態，旋轉操作該偏心^ 輪’可使該馬達安裝台於上述方向位置移動以調整該 皮帶之張力。 凸輪 偏心 因此 根據具有上述構成特徵之本發明，由於僅將偏 安裝於縫紉機本體之側面部，且於馬達安裝台形成 凸輪嵌入之孔，即可形成皮帶張力之調整功能（手段 5 201000711 相較於M27G186號㈣公報所揭者，不僅顯著減 少構成要素及零件冑目而可謀求構&之簡單化、製作成本 之降低’亦可謀求驅動裝置之組裝工時之減少。而且，可 在將女裝。固疋手段馬達安裝台可對縫切機本體位置移動 之狀態’ φ即使包含馬達、馬達安裝台之I置的重量分擔 於複數個安裝台固定手段之狀態下，僅旋轉操作偏心凸輪 便使馬達安裝台位置移動’調整有齒皮帶之張力，故比起 習知者能既容易又輕快地以較少勞力及較少操作力進 帶張力之調整。 此外由於安裝於縫紉機本體側面部之偏心凸輪係發 揮將馬達安裝台組裝於縫紉機本體之侧面部時之定位』 銷，亦即頂出銷之功用，因此與如以上所述之零件數量之 削減相結合，即可發揮使驅動裂置整體之組裝作業非常容 易且省力化的效果。 々本發明之工業用縫幼機之驅動襄i中，士。申請專利範 圍第Μ所記載’較佳為採用該偏心凸輪係在該有齒皮帶 之旋繞範圍内’配置於該縫㉟機主軸與馬達輸出軸之轴間 >離的大致中央部’於該偏心凸輪形成有利用手動工具之 旋轉操作部的構成。在採用此種構成之情況下，由於只要 2一般為安全性之確保及防塵而設置於有齒滑輪及有齒 帶之外側部的罩，即可一目了然判別偏心凸輪之位置， =可於其周邊充分確保寬廣之空間，目此藉由將螺絲起子 或：手等手動工具嵌入旋轉操作部，不僅皮帶張力之初期 調整’亦可容[輕快絲速地進行對應目長期使用所造 201000711 成之皮帶鬆弛的中間調整操作。 本發明之工業用縫紉機之驅動裝置 利範圍第3或4工苜邰々# 月專201000711 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a driving device for an industrial sewing machine such as a pickup car. More specifically, it relates to a driving device for an industrial seaming machine, which is provided with a slitting machine main shaft protruding from the side of the sewing machine body toward the outside and disposed at a side surface portion of the main body of the slitting machine and fixedly supported to the slit The output shaft of the sewing machine driving motor at the rear of the motor mounting base extending at the rear of the cutter body is interlocked by the toothed pulleys of the two shafts and the toothed belts wound between the toothed pulleys Connected between the motor mounting table and the seaming machine body, the motor mounting table is mounted to align the rushing machine body to change the distance between the two axes to (4) the positional movement of the toothed belt Mounting table fixing means such as bolts that are freely fixed. [Prior Art] In the drive device for the industrial sewing machine having the above basic configuration, if the threaded pulley of the primary shaft of the sewing machine is locked, the tension of the toothed belt between the toothed pulley of the motor output shaft 2 is set. Strong, applied to the main axis of the slitting machine;: the load is large, there will be abnormal heating of the motor, or the belt will be short-lived: it will be broken. Another "If the tension of the toothed belt is too weak, the belt will be undulating or slipping on the pulley, etc., which cannot ensure stability, good power transmission performance. To eliminate this problem, install the motor mounting table. When the initial assembly of the side of the sewing machine body is completed, the tension of the toothed belt has been appropriately adjusted to be important. The tampering mechanism of the toothed belt is known as disclosed in Japanese Patent Laid-Open Publication No. 201000711, No. A motor mounting plate fixed in position by a bolt or the like is disposed on a side surface of the sewing machine body, and is disposed between the motor mounting plate and the side surface of the sewing machine body by a plurality of portions around the output shaft on the motor side And inserting a support plate that is screwed and fixed to a plurality of bolt shafts formed by a single hole formed in the motor mounting plate and a concentric circular hole formed around the single hole, and is adjusted by adjusting a screw or the like. Operating #, the support plate is mounted on the motor to rotate around one of the plurality of screw shafts, and is fixed at an arbitrary rotation angle. This changes the output shaft of the motor and the sewing machine main shaft of the sewing machine body side, and can adjust the tension of the belt wound between the pulleys fixed between the two shafts. However, the belt disclosed in the above Patent Document i The tension adjusting means, in addition to the motor mounting plate, must have a support plate for substantially supporting the motor, and the support plate is rotatably and fixedly attached to the motor mounting plate, and a bolt shaft such as a plurality of bolts for screwing and fixing The bolt shafts are formed on the plurality of screw holes of the support plate, and the adjusting bolts for fixing the support plate are fixed/unexpected. I have a number of components and the number of parts. 1, the structure of the tension adjustment means has become very complicated. The sisters, not only increase the assembly of the overall drive device, etc., after the assembly of the ancient belt adjustment, it must also take a lot of operation labor "full time, very heavy motor The weight of the belt is also circumvented. Because the belt tension is violated, the rotation force centered on the -bolt shaft is responsible for the rotation force, and must be counterbalanced with the load moment, thus resulting in the belt tension. Whole ", bolt "that is where ah Church Xie to larger issues such as the operating force. [Description of the Invention] 4 201000711 The present invention is based on the above-mentioned facts, and aims to provide a reduction in the number of components and the number of components as much as possible, which simplifies the structure and reduces the number of man-hours for assembly of the entire device, and is easy and brisk. A driving device for an industrial sewing machine that adjusts the predetermined belt tension with less labor and less operating force. In order to achieve the above object, a driving device for an industrial sewing machine according to the present invention has a sewing machine main shaft projecting outward from a side portion of the sewing machine main body and is disposed at a side surface portion of the sewing machine main body and fixedly supported behind the sewing machine main body. The output shaft of the sewing machine driving motor at the rear of the extended motor mounting base is connected by a toothed pulley fixed to the two shafts and a belt connected between the toothed pulleys, and is connected thereto. Between the motor mounting platform and the sewing machine body, α can be installed to match the distance between the two axes of the sewing machine body to adjust the tension between the two shafts to adjust the tension of the toothed belt. A mounting table fixing means such as a bolt is characterized in that an eccentric cam that can be rotated around an axis orthogonal to a moving direction of the motor mounting table is attached to a side portion of the sewing machine body, and the motor is mounted on the motor. The mounting table is formed with an inner peripheral edge hole having a peripheral surface that is slidably attached to the eccentric cam. The eccentric wheel is rotated by the plurality of mounting table fixing means for the motor mounting table to move the position of the (4) machine body. 'The motor mount can be moved in the above direction to adjust the tension of the belt. Therefore, according to the present invention having the above-described constitutional features, the belt tension adjustment function can be formed by attaching only the side surface portion of the sewing machine body to the side surface portion of the sewing machine body and forming a cam insertion hole in the motor mounting table (means 5 201000711) The M27G186 (4) bulletin not only significantly reduces the number of components and parts, but also simplifies the construction and simplification, and reduces the manufacturing cost. The solid state means that the motor mounting table can move the position of the seam cutting machine body 'φ even if the weight of the I-mounted motor and the motor mounting table is shared by a plurality of mounting table fixing means, only the eccentric cam is rotated. Move the position of the motor mounting table to adjust the tension of the toothed belt, so it is easier and lighter to adjust the belt tension with less labor and less operating force than the conventional one. Also, it is mounted on the side of the sewing machine body. The eccentric cam system functions as a positioning pin when the motor mounting table is assembled to the side surface of the sewing machine body, that is, the ejector pin Therefore, in combination with the reduction of the number of parts as described above, the assembly work for driving the entire splitting can be performed very easily and labor-savingly. 々 In the drive 襄i of the industrial sewing machine of the present invention, In the scope of the patent application, it is preferable to use the eccentric cam system in the winding range of the toothed belt to be disposed between the main shaft of the slit 35 machine and the shaft of the motor output shaft > In the eccentric cam, a rotary operation portion using a hand tool is formed. When such a configuration is adopted, it is provided on the side of the toothed pulley and the toothed belt as long as the safety is generally ensured and dustproof. The cover can be used to determine the position of the eccentric cam at a glance. = It can fully ensure the wide space around it. Therefore, by inserting a screwdriver or a hand tool such as a hand into the rotary operation part, not only the initial adjustment of the belt tension can be accommodated. [Lightly and quickly perform the intermediate adjustment operation of the belt relaxation of the 201000711 made by the long-term use of the target. The driving range of the industrial sewing machine of the present invention is advantageous. 3rd or 4th 苜邰々# month special
員所5己載，亦可將該偏心凸輪設置成將— 體形成於其基端伽& A j的軸，以可在其軸心周圍旋轉操作之方 ^保持於形成在縫紉機本體之侧面部之軸孔内的安裝構 寺偏〜凸輪之安裝零件一個即可，構造簡單。 本發明之工業用縫紉機之驅動裝置中，如 利範圍第5或6項所々讲+ 寻 項所5己載，亦可將該偏心凸輪設置成於螺 入固定在縫匆機本體之側面部之銷狀軸構件的軸心周圍嵌 口保持成可&轉操作的安裝構造。此時，⑹中請專利範圍 第3或4項之安裝構造的情況般，無須為了將一體形成於 偏〜凸輪基端侧之轴’在其軸心周圍保持成軸心可不震動 旋轉，而對縫訪機本體側之轴孔要求較高之加工精度，可 降低縫㈣本體側之力α精度。X，由於確實正確地發揮 將馬達安裝台組襞於縫匆機本體之側面部時之定位用銷的 功用’因此採用該中請專利範圍第4項之安裝構造者更佳。 【實施方式】 以下’根據圖式說明本發明之實施形態。 圖1係適用本發明之工業用縫紉機之驅動裝置之拷克 車的整體立體圖，®1 2係要部的分解立體圖，圖3則為右 侧視圖。此等圖1〜圖3中，1係缝紉機本體，於其左側部 設有具備上下來回運動之針（因屬公知故省略記載）、壓布器 2、送布齒3、或線鉤（因屬公知故省略記载）的布板4等’ 201000711 且於縫紉機本體 油收納部5。 1之下端部，安裝有稱呼為承油盤之潤滑 於該縫幼機本體i之右側端部，形成有朝向外方開口 之大致為半圓頂形狀的凹入部6。於該凹入部6内配： 冷卻風扇22，其係固定於插通於縫紉機本體1内部且朝向 右側外方犬出之縫㈣絲7，而與該縫纫機絲7 —體旋 轉。於該縫幼機本體i之右側端面部1A，配置有往後方部 延伸之馬達安裝台8,以從該右側端面部1A將該凹入部6 之開口封閉，於該馬達安裝台8之後端部固定支承有縫 機驅動用馬達9。 ’ 該馬達安裝台8,係透過安裝台固定手段安裝成可對縫 紉機本體1於圖3之箭頭a_b方向位置移動及固定自如， 該安裝台固定手段由分別形成於該馬達安裝自8之靠前方 位置與别後中間部之上下位置之合計3個部位的較大貫通 孔（所謂鬆孔）ιι、在該縫紉機本體丨之右側端面部ia形成 於對應該3個貫通孔丨丨之部位的母螺孔12、及從馬達安裝 台8之右外方插通該貫通孔丨丨且可螺入固定於該母螺孔u 的3支螺栓U(圖2中僅以丨支表示以避免重疊）所構成。 於該馬達安裝台8之外側面側，形成有後述有齒皮帶 之捲掛用凹入空間8a。該縫紉機主軸7及該馬達9之輸出 軸10,係插通該馬達安裝台8且突出至該凹入空間8a内。 於突出至该凹入空間8a内之縫紉機主軸7及馬達9之輸出 軸ίο，分別固定有小徑之有齒滑輪（以下，稱為時序滑輪 及大徑之有齒滑輪（以下，稱為時序滑輪）丨5，且涵蓋該等兩 201000711 時序滑輪14, 15間，捲掛有有齒皮帶（以下，稱為時序皮 帶）16’藉由該時序皮帶16來連動連結該縫紉機驅動馬達9 之輪出軸10與缝紉機主軸7。 在該時序皮帶1 6之旋繞範圍内，於相當於該縫紉機主 軸7與馬達輸出軸1〇之軸間距離之大致中央部之位置之該 縫紉機本體1的右侧端面部1A，安裝有偏心凸輪17，其可 在正交於該馬達安裝台8之位置移動方向（箭頭a_b方向） 之軸心周圍於箭頭c方向旋轉操作。另一方面，於對應該馬 達女裝台8之上述位置的部位形成有孔18，該孔18具有滑 接於該偏心凸輪17之偏心外周面17a的内周緣部。藉此， 在對母螺孔12微幅放鬆構成該安裝台固定手段之3支螺栓 ⑴使馬達安裝台8可對縫劫機本體方向位置移 動的狀態下，藉由旋轉操作該偏心凸輪丨7，使該馬達安裝 台8於該a—b方向移動’構成為可微調該時序皮帶16之張 力。The eccentric cam may be disposed such that the eccentric cam is formed on the shaft of the base end gamma & A j so as to be rotatable around its axis to be held on the side of the sewing machine body. The mounting structure in the shaft hole of the part is one of the mounting parts of the cam to the cam, and the structure is simple. In the driving device for the industrial sewing machine of the present invention, the eccentric cam may be arranged to be screwed into the side portion of the seam rushing body, as described in the fifth or sixth paragraph of the benefit range + the finder 5; The pin-shaped periphery of the pin-shaped shaft member is held in a mounting structure that can be rotated. In this case, in the case of the mounting structure of the third or fourth aspect of the patent range (6), it is not necessary to maintain the axis of the shaft which is integrally formed on the base end side of the offset cam from the axis of the shaft so as not to vibrate, but The hole hole on the side of the machine body of the machine is required to have higher machining precision, and the force α precision of the body side of the slit (four) can be reduced. X, since the function of the positioning pin when the motor mounting table is placed on the side surface of the sewing machine body is correctly performed, it is preferable to use the mounting structure of the fourth aspect of the patent application. [Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings. Fig. 1 is an overall perspective view of a copying machine to which a driving device for an industrial sewing machine according to the present invention is applied, an exploded perspective view of a main part of the system, and Fig. 3 is a right side view. In the drawings 1 to 3, the 1st sewing machine main body is provided with a needle having a vertical movement back and forth (not described in the prior art), a presser 2, a feed tooth 3, or a wire hook (in the left side). The cloth board 4 or the like '201000711, which is well-known and omitted) is attached to the sewing machine body oil accommodating portion 5. The lower end portion of the lower portion is attached with a lubricated oil pan to the right end portion of the slit machine body i, and a concave portion 6 having a substantially semi-domed shape opening toward the outside is formed. The recessed portion 6 is provided with a cooling fan 22 that is fixed to a slit (four) wire 7 that is inserted into the inside of the sewing machine body 1 and that is directed toward the right outer side, and is rotated integrally with the sewing machine wire 7. A motor mounting base 8 extending toward the rear portion is disposed on the right end surface portion 1A of the slit machine body i, and the opening of the recessed portion 6 is closed from the right end surface portion 1A, and the end portion of the motor mounting table 8 is closed. The sewing machine drive motor 9 is fixedly supported. The motor mounting table 8 is mounted by means of a mounting table fixing means for moving and fixing the sewing machine body 1 in the direction of the arrow a_b of FIG. 3. The mounting table fixing means are respectively formed before the motor is mounted from the front of the motor 8 A large through hole (so-called loose hole) of three points in total of the square position and the upper and lower intermediate positions, and the right end surface portion ia of the sewing machine body 形成 are formed in the portions corresponding to the three through holes The female screw hole 12 and the right outer side of the motor mounting base 8 are inserted through the through hole 丨丨 and can be screwed into the three bolts U fixed to the female screw hole u (in FIG. 2, only the 丨 branch is used to avoid overlap) ) constitutes. On the outer side surface side of the motor mounting base 8, a recessed recessed space 8a for a toothed belt to be described later is formed. The sewing machine main shaft 7 and the output shaft 10 of the motor 9 are inserted into the motor mounting table 8 and protrude into the recessed space 8a. To the sewing machine main shaft 7 and the output shaft ίο of the motor 9 projecting into the recessed space 8a, respectively, a small-diameter toothed pulley (hereinafter referred to as a timing pulley and a large-diameter toothed pulley (hereinafter, referred to as timing) Pulley) 丨5, and covers the two 201000711 timing pulleys 14, 15 and has a toothed belt (hereinafter referred to as a timing belt) 16' linked by the timing belt 16 to connect the sewing machine drive motor 9 The output shaft 10 and the sewing machine main shaft 7. In the winding range of the timing belt 16, the right side of the sewing machine body 1 at a position corresponding to a substantially central portion of the distance between the sewing machine main shaft 7 and the motor output shaft 1? The end surface portion 1A is mounted with an eccentric cam 17 which is rotatable in the direction of the arrow c around the axis of the direction of the movement of the motor mounting table 8 (the direction of the arrow a_b). On the other hand, in response to the motor female The portion of the mounting table 8 is formed with a hole 18 having an inner peripheral edge portion that is slidably attached to the eccentric outer peripheral surface 17a of the eccentric cam 17. Thereby, the mounting table is formed by slightly relaxing the female screw hole 12 Fixed means The three bolts (1) enable the motor mounting table 8 to move in the a-b direction by rotating the eccentric cam 丨7 in a state in which the motor mounting table 8 can be moved in the direction of the sewing machine body. The tension of the timing belt 16.
此處，該偏心凸冑17,如圖4所明示，係於螺入固定 在該縫紉機本體1之右側端面部1A之銷狀軸構件21的外 側，鼓合保持成可在該銷狀軸料21之軸心肖圍旋轉，且 於該偏心凸輪17之右側端部，形成有屬手動工具之一例之 螺絲起子前端的插入槽（旋轉操作部）丨7b。 之右外侧面部，用以覆蓋 又，於該馬達安裝台 該四入0 8a狀時序滑輪14，15、時序皮帶Μ、及該偏 μ凸輪17外方整體的安全兼防塵罩19，係透過複數支（圖 式上雖表示2支，不過3支以上亦可)螺栓2〇及形成於隆起 9 201000711 部8 c(形成在馬達安奘A。 、口 8之凹入空間8a内）之母螺孔8d "〇裝。於該安全兼防塵罩19之突出凸緣部分19a 及與該凸緣部分19a互相重疊之該馬達安裝 卻風扇22之外氣取入田 ιλι " ” 用口 19b及8b係形成為半圓弧狀， 以該冷卻風扇22之旋轉使從該 外氣取入用口 19b及8bHere, the eccentric tenon 17, as shown in Fig. 4, is screwed into the outer side of the pin-shaped shaft member 21 fixed to the right end surface portion 1A of the sewing machine body 1, and the drum is held in the pin-shaped shaft. The shaft of the 21 is rotated, and at the right end of the eccentric cam 17, an insertion groove (rotation operation portion) 丨 7b which is a tip end of a screwdriver which is an example of a hand tool is formed. The right outer side surface is covered with the safety and dust cover 19 of the four-in-eight-timed timing pulley 14, 15, the timing belt pulley, and the outer side of the partial cam cam 17 in the motor mounting table. Support (two in the figure, but three or more) bolts 2〇 and snails formed in the ridge 9 201000711 part 8 c (formed in the motor ampere A., the recessed space 8a of the port 8) Hole 8d " armored. The protruding flange portion 19a of the safety and dust cover 19 and the motor mounted on the flange portion 19a overlap with each other, and the fan 22 is taken into the field ιλλ "" The ports 19b and 8b are formed in a semi-arc shape. The outside air intake ports 19b and 8b are rotated by the cooling fan 22
被取入產生之冷;gp空备·A ^ 卩礼/;IL，藉由間接熱交換來冷卻被送至 該潤滑油收納部5之潤滑油。 日再者於该馬達安裝台8之靠後方上邊部，一體形成 =提手部8Α ’以使可在將該馬達安裝台8安裝於縫初機本 1之右側端面部1Α的既定位置時，以手支承其重量。 X上述方式構成之拷克車中，縫匆機驅動用馬達9之 由】出轴1G的驅動旋轉力，係經過大徑之時序滑輪b、時序 6、及小徑之時序滑輪14，被增速傳遞至缝初機主軸 、。接者，遠縫幼機主軸7之旋轉力被傳遞至各部而針上下 ^動’且線鉤或送布齒3作動，以進行既定之縫製。又， 在该縫製時，藉由愈該錄έ媸 ^ ^ ”这縫，、刃機主軸7 —體旋轉之冷卻風扇 2的動作以從該外氣取入用〇叫⑽被取入之外氣作 ‘”部空氣流被送至潤滑油收納部 卻潤滑油。 3田门按…乂挾木冷 =了持續圓滑且順利進行上述縫製動作，在初期即將 7"、: 切機驅動用馬達9之輪出軸10與缝切機主軸 掛在涵蓋固定於兩軸1〇,7之時序滑輪BA間之時 帶16的張力設定成適切而無過剩或過度不足非常重 要。為此目的之皮帶張力調整手段，在本發明之實施形態 10 201000711 中，如以上料，由於僅將偏心凸^17安裝於縫幼機本體 之右侧端面部1A，且於馬達安裝台8形成該偏心、凸輪17 嵌入之孔18即可，因此相較於M27〇186號專利公報所揭示 之習知者，藉由構成要素及零件數量之顯著削減，不僅可 謀求構造之簡單化、製作成本之降低，亦可減少驅動裝置 整體之組裝工時。 又，可在對母螺孔1 2微幅放鬆構成安裝台固定手段之 3支螺栓13,使馬達安裝台8可對縫紉機本體 向位置移動的狀態下，將螺絲起子前端插入形成於該心 凸輪17右侧端部之插入槽（旋轉操作部）nb ’再旋轉操作該 偏心凸輪1 7，藉此該馬達安裝台8即可在滑接於偏心凸輪 Π外周面之孔18的内周緣部被按壓，於該a—b方向被^ 動偏心量，調整該時序皮帶16之張力，相較於專利文獻i 所示之習知者，即可以較少之工時容易且以較少之操作力 輕快地進行皮帶張力調整。It is taken in cold; gp is empty, A ^ 卩 /;; IL, and the lubricating oil sent to the lubricating oil accommodating portion 5 is cooled by indirect heat exchange. Further, in the rear upper side portion of the motor mounting table 8, the handle portion 8' is integrally formed so that the motor mounting table 8 can be attached to the predetermined position of the right end surface portion 1 of the sewing machine 1 Support the weight with your hand. In the copying machine constructed as described above, the driving rotational force of the output shaft 9 of the slit drive motor 9 is increased by the timing pulley b of the large diameter, the timing 6 and the timing pulley 14 of the small diameter. The speed is transmitted to the sewing machine main shaft. Then, the rotational force of the distal sewing machine spindle 7 is transmitted to the respective portions and the needle is moved up and down and the wire hook or the feed dog 3 is actuated to perform the predetermined sewing. Further, at the time of the sewing, the operation of the cooling fan 2 in which the blade main shaft 7 is rotated by the squeezing of the squeezing is performed, and the squeaking (10) is taken in from the outside air. The air flow of the "gas" portion is sent to the lubricating oil storage portion but the lubricating oil. 3 Tianmen press... eucalyptus cold = continuous sleek and smooth sewing operation, in the early stage, 7",: the wheel drive shaft 10 of the cutter drive motor 9 and the seam cutting machine spindle are hung in the cover fixed to the two axes It is important to set the tension of the belt 16 between the timing pulleys of the 7 and 7 timing pulleys to be appropriate without excess or excessive shortage. For the belt tension adjusting means for this purpose, in the embodiment 10 201000711 of the present invention, as described above, only the eccentric projection 17 is attached to the right end surface portion 1A of the slitting machine body, and is formed at the motor mounting table 8. Since the eccentricity and the hole 17 in which the cam 17 is fitted can be used, it is possible to simplify the structure and the manufacturing cost by significantly reducing the number of components and components as compared with the conventional one disclosed in the above-mentioned Japanese Patent Publication No. 196-186. The reduction can also reduce the assembly time of the drive unit as a whole. Moreover, the three bolts 13 constituting the mounting table fixing means can be loosely loosened to the female screw hole 12, and the front end of the screwdriver can be inserted into the heart cam in a state where the motor mounting table 8 can move the sewing machine body to the position. The insertion groove (rotation operation portion) nb of the right end portion of the right end portion of the eccentric cam rim Pressing, the amount of eccentricity is adjusted in the a-b direction, and the tension of the timing belt 16 is adjusted. Compared with the conventional one shown in Patent Document i, it is easy to operate with less operation time and less operation force. Perform belt tension adjustment briskly.
再者，由於安裝於縫紉機本體丨之右側端面部ia的偏 心凸輪Π，係發揮將馬達安裝台8組裝於縫匆機本體丨之 右側面部時之定位用銷，亦即頂出銷之功，因此與如以 上所述之零件數置之削減相結合，即可非常容易且省力地 進行驅動裝置整體之組裝作業。 於 21 過 此外，上述實施形態中’雖以將偏心凸輪17嵌合保持 螺入固定在縫幼機本體i之右側端面部1A之銷狀軸構件 ，而可於其軸心周圍旋轉操作的安裝構造作了說明，不 亦可取代此而如圖5所示，採用將軸21A —體形成於偏 201000711 ^凸輪1 7之基端側，將該軸21A插入保持於形成在縫紉機 本體1之右侧端面部丨A的軸孔丨a内，而可在其轴心周圍 旋轉操作的安裝構造。 右比較兩安裝構造，在如圖5所示之安裝構造的情況 下，零件雖只要一個即可，不過為了將一體形成於偏心凸 土 側之軸2 1 a，在其軸心周圍保持成軸心可不震動 疑轉’須對縫紉機本體1側之軸孔la要求較高之加工精度。 相對於此，在如圖4所示之安裝構造的情況下，由於無箱Further, the eccentric cam 安装 attached to the right end surface portion ia of the sewing machine body 发挥 functions as a positioning pin for assembling the motor mounting table 8 to the right side surface of the sewing machine body ,, that is, the function of the ejector pin. Therefore, in combination with the reduction of the number of parts as described above, the assembly work of the entire drive unit can be performed very easily and labor-savingly. In addition, in the above-described embodiment, the eccentric cam 17 is fitted and held by a pin-shaped shaft member that is screwed and fixed to the right end surface portion 1A of the slit machine body i, and can be rotated around the axis. The structure is described, and instead of this, as shown in FIG. 5, the shaft 21A is formed on the base end side of the camshaft 20107, and the shaft 21A is inserted and held on the right side of the sewing machine body 1. The mounting structure of the shaft hole 丨a of the side end face 丨A is rotatable around its axis. The two mounting structures are compared to the right. In the case of the mounting structure shown in FIG. 5, only one part may be used, but in order to integrally form the shaft 2 1 a formed on the eccentric convex side, the shaft is held around the axis. The heart can be shaken without a shock. 'The machining accuracy of the shaft hole la on the side of the sewing machine body 1 is required. In contrast, in the case of the mounting structure shown in FIG. 4, since there is no box
不過亦可適用於平縫縫紉機或其他環But it can also be applied to flat sewing machines or other rings.
縫縫紉機等工業 之效果。 【圖式簡單說明】 圖1係適用本發明之工業用縫紉機 車的整體立體圖。 之驅動裝置之拷克 立體圖。 圖2係同上拷克車之要部的分解立 圖3係同上拷克車的右側視圖。 圖4係要部的放大縱截面圖。 之要部的放大縱截 圖5係表示其他實施形態之 12 201000711 【主要元件符號說明】 1 縫紉機本體 1 a 軸孔 1A 右側端面部 2 壓布器 3 送布齒 4 布板 5 潤滑油收納部 6 凹入部 7 縫紉機主軸 8 馬達安裝台 8a 凹入空間 8b 外氣取入用口 8c 隆起部 8d 母螺孔 8A 提手部 9 馬達 10 輸出轴 11 貫通孔 12 母螺孔 13 螺栓 14 時序滑輪 15 時序滑輪 16 時序皮帶 13 201000711 17 17a 17b 18 19 19a 19b 20 21 21 A 22 偏心凸輪 偏心外周面 插入槽（旋轉操作部） 孔 安全兼防塵罩 凸緣部分 外氣取入用口 螺栓 銷狀軸構件 軸 冷卻風扇 14Sewing the effects of sewing machines and other industries. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall perspective view of an industrial sewing machine to which the present invention is applied. The driver's copy of the stereogram. Figure 2 is an exploded view of the main part of the same copy of the car. Figure 3 is the right side view of the same copy of the car. Fig. 4 is an enlarged longitudinal sectional view of an essential part. The enlarged vertical view 5 of the main part shows 12 of other embodiments. 201000711 [Explanation of main component symbols] 1 Sewing machine body 1 a Shaft hole 1A Right side end surface 2 Presser 3 Feeding cloth 4 Cloth plate 5 Lubricating oil accommodating portion 6 Recessed part 7 Sewing machine spindle 8 Motor mounting table 8a Recessed space 8b Outer air intake port 8c Uplift part 8d Female screw hole 8A Handle part 9 Motor 10 Output shaft 11 Through hole 12 Female screw hole 13 Bolt 14 Timing pulley 15 Timing Pulley 16 timing belt 13 201000711 17 17a 17b 18 19 19a 19b 20 21 21 A 22 Eccentric cam eccentric outer peripheral surface insertion groove (rotary operation part) Hole safety and dust cover flange part outer air intake port bolt pin shaft member shaft Cooling fan 14