200813331 ZHOVOpiT 九、發明說明： I發明所屬之技術領域】 本發明是有關於一種齒輪泵，且特別是有關於一種可 適用於建条機械、車輛用油壓機械等的齒輪泵（gear pump ) ° 【先前技術】 先前，如圖7及圖8所示，具備齒輪對X6及罩殼X2 (casing)的齒輪泵XI廣泛用作建築機械、車輛用油壓機 械等的油壓供給源。上述齒輪對X6是使主動齒輪X61與 從動齒輪X62相嚙合而成；上述罩殼X2包括：具備收納 上述齒輪對X6的眼鏡形孔X4a( glasses hole)的本體X4、 以及覆蓋該本體X4的前方至後方的蓋X3、X5，並此罩殼 X2是藉由固定用螺栓X8連接上述本體X4及蓋X3、X5 而成。該齒輪泵XI具有如下功能，即，自與上述眼鏡形孔 X4a連通的低壓侧流道口 X43將操作液體（operating fluid ) 供給至主動齒輪X61與從動齒輪X62之間的空間内，並使 上述操作液體自高壓側流道口 X41流出。 近年來，期望於如上所述的齒輪泵XI的高壓側安裝 洩放閥（relief valve)或流量控制閥等閥。此時，存在必 須具有自安裝於高壓側的閥至低壓侧的配管，如此之配管 較多是設置於該齒輪泵XI的外部。 專利文獻1:曰本專利特開2003 — 336583公報 然而’若於南壓侧安裝閥時，於齒輪泵XI的外部設 置上述配|，則必疋品要接頭或配管用管道（piping pipes ) 7 200813331 Z4by〇pit 二=二用以於該齒輪粟X1附近設置接頭或 配S用S運寺的空間。因200813331 ZHOVOpiT IX. INSTRUCTIONS: TECHNICAL FIELD The present invention relates to a gear pump, and more particularly to a gear pump that can be applied to a construction machine, a hydraulic machine for a vehicle, and the like. [Prior Art] As shown in Fig. 7 and Fig. 8, the gear pump XI including the gear pair X6 and the casing X2 (casing) is widely used as a hydraulic pressure supply source for construction machines and hydraulic machines for vehicles. The gear pair X6 is formed by meshing the driving gear X61 and the driven gear X62. The casing X2 includes a body X4 including a glasses hole X4a (glass hole) for accommodating the gear pair X6, and a cover body X4. The cover X3 and X5 are provided from the front to the rear, and the cover X2 is connected to the main body X4 and the covers X3 and X5 by a fixing bolt X8. The gear pump XI has a function of supplying an operating fluid from a low-pressure side runner port X43 communicating with the spectacle-shaped hole X4a to a space between the driving gear X61 and the driven gear X62, and The operating liquid flows out from the high pressure side runner port X41. In recent years, it has been desired to install a valve such as a relief valve or a flow control valve on the high pressure side of the gear pump XI as described above. At this time, there is a need to have a pipe from the valve mounted on the high pressure side to the low pressure side, and such piping is often provided outside the gear pump XI. Patent Document 1: Japanese Patent Laid-Open No. 2003-336583. However, if the above-mentioned configuration is provided outside the gear pump XI when the valve is installed on the south pressure side, it is necessary to use a joint or a piping pipe. 200813331 Z4by〇pit Two=2 is used to set up the joint near the gear millet X1 or the space for the S to use the S. because
於齒輪泵幻内設置用以連通自閱至低=通口t 啊職娜㈣為止的連通路徑。側通（W 之:二X4的眼鏡形孔X4a與上述螺检X8 刀亦即與眼鏡形孔X4a相 上設置如蚊連财彳 ^[的^方向位置 的眼鐘㈣w β 貝】會產生其他問題’即’本體X4 ’ a附近的部位的厚度變得 /Μ ^ λ-. 分獲得對眼鏡形孔X4a妬了 - ^又又侍極溥，從而热法充 【發明内容】 所承”油壓的強度。 =發明是為了解決了上述問題而構成的。 相2即，本發明的齒輪泉包括：使主動齒輪愈從動齒幹 相嚙合而成的丨個或多個I Ufi、仉動w耦 罩殼。上述罩殼包括：本^及罢以3、納上述齒輪對的 形孔，收納上述齒輪對.二 \上述本體包括：眼鏡 述目輪對的齒輪的軸插通；健侧通口，鱼上 =:孔連通且吸入低壓之操作液體;高壓侧通口 1 部、u連通且排出高壓之操作液體；以及閥安裳 該本體==:近;可安裝間。上述蓋_ 在與上述軸承孔相對應的前 為止的迴路。b k自上«安裝部至低屡側通口 右為如此之齒輪泵，則本體的設置有上述軸承孔的部 8 200813331 z^+oyopii 位的厚度比設置有上述眼 即使設置迴路，本體的強度亦=^位的厚度還厚。因此 以設置迴路而不會使本體白;強失。亦即，可 與使本體的=二的= 數及侧 設置迴路的形態相比 使:^、而於該部位 前的厚度，因此可㈣自身的厚度厚於先 謂「與上述轴承孔相對庫；^f的的材料費。再者，所 述軸承孔、^= ==」’是包含存在上 概念。 ㈣$孔的所有前後方向位置的 [發明的效果] 的效^發明以如上所述的形態加以實施，可獲得如下所述 亦即，根據本發明，利用右盥 向位置上本體的厚度相對較厚的；^承孔相對應的前後方 設置迴路，藉此可以設置迴t二二:如此之位置上 損失，能夠節省配設如此之齒輪“=的強度有較大 安裝空間。進而，與使本體的眼鏡^孔周件個，及 較厚而於該部位設置迴路的形態相比，2 :σΡ位的厚度 身的厚度厚於先前的厚度，“可節省使本體自 料費。 即$製造本體時的材 為瓖本發明之上述和其他目的 易懂，下文特舉較佳實施例，並配合物更明顯 明如下。 所附圖式，作詳細說 9 200813331 z^oyopn 【實施方式】 首先，以下參照圖1及圖2說明本發明的第1實施形 態。 本發明所提供的齒輪泵1是包括：第1齒輪對6以及 第2齒輪對7的雙聯齒輪泵（double gear pump )。該齒輪 泵1分別如圖1的縱剖面圖、圖2的左側視圖、圖3的右 侧視圖、及圖4的沿著圖1之X — X線的剖面圖所示，第 1齒輪對6是使第1主動齒輪61與第1從動齒輪62相嚙 合而構成的。另一方面，第2齒輪對7是使第2主動齒輪 71與第2從動齒輪72相喃合而構成的。並且，上述第1 齒輪對6及第2齒輪對7收納在罩殼2内，此罩殼2包含 前蓋3、本體4及後蓋5。 更具體而言，於上述本體4的前後兩端部設置第1眼 鏡形孔4a及第2眼鏡形孔4b，並且，於該本體4的中間 部形成有分隔兩齒輪對6、7的中間隔壁4W。於由上述第 1眼鏡形孔4a與前蓋3所形成的室内，收納著第1齒輪對 6。於由上述第2眼鏡形孔4b與後蓋5所形成的室内，收 納著第2齒輪對7。而且，於上述中間隔壁4W上設有軸 承孔4x，該軸承孔4x分別與上述第1眼鏡形孔4a及第2 眼鏡形孔4b連通，並且使支持第1主動齒輪61的輸入輸 出軸611及支持第2主動齒輪71的軸711插通。而且，於 上述中間隔壁4W上亦設有軸承孔4y，該軸承孔4y分別 與上述第1眼鏡形孔4a及第2眼鏡形孔4b連通，並且使 支持第1從動齒輪62的軸621及支持第2從動齒輪72的 10 200813331 Z4(>ybpit 軸721插通。 而且，前蓋3以及後i 5具有與用於此種雙聯齒於支 中而眾所周知的前蓋及後1相同的結構。亦即，於前芸3 上設有使上述輸入輸出轴611插通的軸承孔3χ、以及^支 持弟1從動齒輪62的轴621插通的轴承孔3y。另—方面 於後蓋5上設有使支持第2主動齒輪71的軸71丨插通的轴 承孔5x、以及使支持第2從動齒輪72的軸721插通的轴 承孔5y。並且，前蓋3、本體4以及後蓋5藉由固定用螺 栓8而一體固定。另外，於上述前蓋3與上述輸入輪出軸 611之間設置著油封91 ( oil seal)。 … 第1主動齒輪61與輸入輸出軸611 —體地形成。誃 入輸出軸611藉由配置於上述前蓋3的軸承孔3χ内以=: 置於上述本體4的軸承孔知内的軸襯92 (bush)， 沪 於罩殼2中。第1從動齒輪62亦與軸621 —體士、二 轴621藉由配置於上述前蓋3的轴承孔外内以及配^^ 述本體4的軸承孔4y内的軸襯％，而支持於罩殼2中。 二二2f主與軸711 —體地形成。該轴711 在與弟1主動齒輪61相同的軸心上，藉由配置於上 4的軸承孔4χ内以及配置於上述後蓋5的軸承孔5 ^ 車由襯92，而支持於罩殼2中。此處，支持該第2主動齒輪 71的軸711固定於上述輸入輸出軸611的軸端，因此，二 2主動齒輪71與第1主動齒輪61受到同步旋轉驅動。^ 而，第2從動齒輪72亦與轴721 —體地形成。該軸 在與第1從動齒輪62相同的軸心上，藉由配置於^述本體 200813331 4的軸承孔4y内以及配置於上述後蓋 軸襯92 ’而支持於罢M 0 。从、^In the gear pump, the communication path is set to connect the self-reading to the low=port t ah (a). Side pass (W: two X4 glasses-shaped holes X4a and the above-mentioned screw X8 knife, that is, the eye-shaped hole (X4) w β shell on the spectacles-shaped hole X4a The problem 'that is, the thickness of the part near the body X4 ' a becomes /Μ ^ λ-. The score is obtained for the spectacles-shaped hole X4a - ^ and then the 溥 溥, thus the thermal method [invention] Strength of the press. The invention is constructed to solve the above problems. Phase 2, that is, the gear spring of the present invention includes: one or more I Ufi, which are made by meshing the driving gear with the moving tooth dry The wrapper cover comprises: a hole shaped by the pair of gears, and a pair of the gear pairs, and the pair of gears are accommodated. The body comprises: a shaft insertion of a gear of the pair of eyeglasses; Port, fish on =: hole connected and inhaled low pressure operating liquid; high pressure side port 1 part, u connected and discharged high pressure operating liquid; and valve Anshang body ==: near; installable room. The circuit up to the front of the bearing hole. bk from the upper part of the mounting part to the lower side of the port The wheel pump is provided with the above-mentioned bearing hole portion 8 200813331 z^+oyopii bit thickness ratio is set even if the above-mentioned eye is provided, the strength of the body is also thicker than the thickness of the position. Therefore, the circuit is not set. Make the body white; strong loss. That is, it can be compared with the form of the === and the side setting loop of the body: ^, and the thickness before the part, so (4) the thickness of the body itself is thicker than the first "Compared with the above bearing hole; material cost of ^f. Furthermore, the bearing hole, ^= =="' is included in the concept of existence. (4) The effect of all the front and rear positions of the hole [invention effect] The invention is implemented in the above-described form, and it can be obtained as follows. According to the present invention, the thickness of the body is relatively thick by the right-handed position; This can be set back to t 2: loss in such a position, can save the installation of such a gear "= the strength has a large installation space. Further, with the body of the glasses ^ hole peripheral pieces, and thicker The shape of the part setting loop is compared to 2: σ Ρ The thickness of the body is thicker than the previous thickness, "the cost of the body can be saved. That is, the material for manufacturing the body is the above-mentioned and other objects of the present invention. The preferred embodiment below, and the complex is more The following is a description of the first embodiment of the present invention with reference to Fig. 1 and Fig. 2. The gear pump 1 provided by the present invention includes: A double gear pump of the first gear pair 6 and the second gear pair 7. The gear pump 1 is as shown in the longitudinal cross-sectional view of FIG. 1, the left side view of FIG. 2, the right side view of FIG. 3, and the figure. 4 is a cross-sectional view taken along line X-X of FIG. 1, and the first gear pair 6 is formed by meshing the first drive gear 61 and the first driven gear 62. On the other hand, the second gear pair 7 is configured by arranging the second drive gear 71 and the second driven gear 72. Further, the first gear pair 6 and the second gear pair 7 are housed in the casing 2, and the casing 2 includes a front cover 3, a main body 4, and a rear cover 5. More specifically, the first spectacle-shaped hole 4a and the second spectacle-shaped hole 4b are provided at the front and rear end portions of the main body 4, and the intermediate partition wall separating the two gear pairs 6 and 7 is formed in the intermediate portion of the main body 4. 4W. The first gear pair 6 is housed in the room formed by the first spectacle-shaped hole 4a and the front cover 3. In the chamber formed by the second spectacle-shaped hole 4b and the rear cover 5, the second gear pair 7 is accommodated. Further, a bearing hole 4x is provided in the intermediate partition wall 4W, and the bearing hole 4x communicates with the first spectacle-shaped hole 4a and the second spectacle-shaped hole 4b, respectively, and the input/output shaft 611 that supports the first driving gear 61 and The shaft 711 supporting the second driving gear 71 is inserted. Further, a bearing hole 4y is provided in the intermediate partition wall 4W, and the bearing hole 4y communicates with the first spectacle-shaped hole 4a and the second spectacle-shaped hole 4b, respectively, and the shaft 621 that supports the first driven gear 62 and 10 200813331 Z4 supporting the second driven gear 72 (> the ybpit shaft 721 is inserted. Moreover, the front cover 3 and the rear i 5 have the same front cover and rear 1 as are well known for use in such double teeth. That is, the front hole 3 is provided with a bearing hole 3χ through which the input/output shaft 611 is inserted, and a bearing hole 3y for supporting the shaft 621 of the slave 1 driven gear 62. The cover 5 is provided with a bearing hole 5x through which the shaft 71 that supports the second input gear 71 is inserted, and a bearing hole 5y through which the shaft 721 that supports the second driven gear 72 is inserted. Further, the front cover 3 and the body 4 The back cover 5 is integrally fixed by a fixing bolt 8. Further, an oil seal 91 is provided between the front cover 3 and the input wheel output shaft 611. The first driving gear 61 and the input/output shaft 611 - formed in the body. The input shaft 611 is disposed in the bearing hole 3 上述 of the front cover 3 to be placed on the body 4 A bushing 92 (bush) in the bearing hole is formed in the casing 2. The first driven gear 62 is also coupled to the shaft 621, and the two shafts 621 are disposed outside the bearing holes of the front cover 3 and ^^ The bushing % in the bearing hole 4y of the body 4 is supported in the casing 2. The 2nd 2f main body is integrally formed with the shaft 711. The shaft 711 is on the same axis as the driving gear 61 of the brother 1 The bearing hole 4 disposed in the upper portion 4 and the bearing hole 5 disposed in the rear cover 5 are supported by the lining 92. Here, the shaft 711 supporting the second driving gear 71 is supported. The second output pinion 71 and the first drive gear 61 are synchronously driven to rotate, and the second driven gear 72 is also integrally formed with the shaft 721. The same axial center as the first driven gear 62 is supported by the bearing hole 4y of the main body 200813331 4 and the rear cover bushing 92'.
621完全獨立， 上述第1從動齒輪62以及第2從動齒輪72分別藉由第！ 主動齒輪61以及第2主動齒輪乃而各自受到驅動。 • 5的軸承孔5y内的 支持該第2從動齒輪 而且’於本體4中，如上述圖2及圖3所示，於其中 一個侧面上设置有第1高壓侧流道口 41及第2高壓側流道 口 42 ’而於另一個侧面上設置有低壓側流道口 43。當第1 齒輪對6及第2齒輪對7作為泵而作動時，低壓側流道口 43成為流入口，第1高壓側流道口 41及第2高壓側流道 口 42成為流出口。第1高壓侧流道口 41以及第2高壓側 流道口 42分別與收納第1齒輪對6的第1眼鏡形孔4a以 及收納第2齒輪對7的第2眼鏡形孔4b連通。另一方面， 低壓侧流道口 43包括：連接部431以及開口部432，上述 連接部431與上述第1眼鏡形孔4a及第2眼鏡形孔4b連 通、且在前後方向上延伸，上述開口部432自上述連接部 431的中間朝向上述另一個侧面而穿設。 進而，於本實施形態中，在本體4的設置有上述高壓 侧流道口 41、42的一個側面上，進而設置有可以安裝以洩 放閥為代表的閥（省略圖示）的閥安裝部44。並且，為了 使該閥安裝部44與上述低壓侧流道口 43相連通，使與上 述轴承孔4x、4y前後位置一致地方式而設置有迴路45 (return passage )。亦即，於上述中間隔壁4W中設置有迴 路45。更具體而言，於上述中間隔壁4W中穿設有下述形 12 200813331 Z4b^(ypn 狀的孔，即，此孔3 、、 的軸心保持大致=上述開口部432開始、與轴承孔4x 且將該孔作為迴路^距離、並到達上述閥安裝部44的孔， 於該齒輪粟1你士 低壓側流道口 43，與先前的雙聯齒輪泵同樣’自 與第1從動齒輪62、tTr體分靠給至第1絲齒輪61 2從動齒輪72的音、=溝内、以及第2主動齒輪71與第 第1從動齒輪62白^1、#向亚使供給至第1主動歯輪61與 Μ吐出，而且㈣操作液體自第1高動彳流道口 72的齒溝内的操作;;動齒輪71與第2從動齒輪 時，由轴承孔知所^自^ 2高壓側流道口 42吐出。此 ^汀叉持的輪入輪出軸011及軸7U由於液 壓而文到朝巾的訂方的仙。 B ft在使女裝於上述閥安裝部44中的閥（省略圖示） ㈣上述迴路45而返回至上述低壓側流 逼口 43的上述開口部衫2。 ，據本實施形態的齒輪栗1的結構，是在與上述本體 4之設置有上述眼鏡形孔如的部位相比 隔 惰中，以與上述軸承孔前後方向位置一致地的 置有連通自上述閥安裝部44至低壓侧通口 43為止的迴路 45。因此，即使設置迴路45，本體4的強度也不合產生較 大損失。而且，於本實施形態中，是將上述迴路設置在圖 4中的軸承孔4x的上方，φ即’相對於軸承孔知，而設置 在與由該軸承孔4 X所支持的輸入輪出軸6丨丨及軸711因液 壓而受到的作用大致相反的-侧。因此，根據此點，亦可 13 200813331 ζΗυ^ομιι 認為因設置迴路45而對本體4的強度造成的損失較小。亦 即，可以設置迴路45而不會使本體4的強度有較大損失， 而能夠節魏設如狀齒輪泵〗及_的零件個數以及安 J空，。進而，與使本體4的眼鏡形孔4a周圍的部位的厚 度較厚而找部位設置迴路的卵祕，由於 4自身的厚度比絲的厚度還厚，因此可Μ減 時的材料費。 〜衣k +月旦斗621 is completely independent, and the first driven gear 62 and the second driven gear 72 are respectively by the first! The drive gear 61 and the second drive gear are each driven. • The second driven gear is supported in the bearing hole 5y of the 5, and the first high-pressure side runner 41 and the second high pressure are provided on one of the side surfaces as shown in FIGS. 2 and 3 above. The side runner port 42' is provided with a low pressure side runner port 43 on the other side. When the first gear pair 6 and the second gear pair 7 act as pumps, the low pressure side runner port 43 serves as an inflow port, and the first high pressure side runner port 41 and the second high pressure side runner port 42 serve as outlet ports. The first high-pressure side runner port 41 and the second high-pressure side runner port 42 communicate with the first spectacle-shaped hole 4a in which the first gear pair 6 is housed and the second spectacle-shaped hole 4b in which the second gear pair 7 is housed. On the other hand, the low-pressure side runner 43 includes a connecting portion 431 and an opening 432. The connecting portion 431 communicates with the first spectacle-shaped hole 4a and the second spectacle-shaped hole 4b, and extends in the front-rear direction. The 432 is bored from the middle of the connecting portion 431 toward the other side surface. Further, in the present embodiment, a valve mounting portion 44 to which a valve (not shown) represented by a relief valve can be attached is provided on one side surface of the main body 4 on which the high-pressure side passage ports 41 and 42 are provided. . Further, in order to allow the valve mounting portion 44 to communicate with the low-pressure side runner port 43, a return passage 45 is provided so as to be aligned with the front and rear positions of the bearing holes 4x, 4y. That is, the circuit 45 is provided in the above-mentioned intermediate partition wall 4W. More specifically, the above-mentioned intermediate partition wall 4W is provided with a shape of the following shape: 200813331 Z4b^ (that is, a hole of the ypn shape, that is, the axial center of the hole 3 is substantially = the start of the opening portion 432, and the bearing hole 4x) And the hole is used as a hole and reaches the hole of the valve mounting portion 44, and the gear mill 1 is lower than the previous double gear pump, and the first driven gear 62 is the same as the previous double gear pump. The tTr body is supplied to the first wire gear 61 2 , the sound of the driven gear 72 , the inside of the groove, and the second drive gear 71 and the first driven gear 62 white ^1, # are supplied to the first initiative. The boring wheel 61 and the cockroach spout, and (4) the operation of the liquid from the tooth groove of the first high turbulence port 72; when the moving gear 71 and the second driven gear are used, the bearing hole knows the high pressure side The runner port 42 is ejected. The wheel-in and out-out shaft 011 and the shaft 7U of the fork are held by the hydraulic pressure to the counter of the towel. B ft is a valve for the women in the valve mounting portion 44 (omitted (4) The above-mentioned circuit 45 returns to the opening shirt 2 of the low-pressure side flow port 43. According to the configuration of the gear pump 1 of the present embodiment, The portion of the main body 4 in which the spectacle-shaped hole is provided is provided with a circuit 45 that communicates with the position from the valve mounting portion 44 to the low-pressure side port 43 in accordance with the position in the front-rear direction of the bearing hole. Therefore, even if the circuit 45 is provided, the strength of the main body 4 does not cause a large loss. Further, in the present embodiment, the above-described circuit is disposed above the bearing hole 4x in Fig. 4, and φ is 'relative to the bearing hole. Further, it is provided on the side opposite to the input wheel shaft 6 支持 and the shaft 711 supported by the bearing hole 4 X due to the hydraulic pressure. Therefore, according to this point, it is also possible to use 13 200813331 ζΗυ^ομιι The loss of the strength of the body 4 due to the provision of the circuit 45 is small. That is, the circuit 45 can be provided without a large loss of the strength of the body 4, and the number of parts capable of setting the gear pump and the _ Further, the thickness of the portion around the spectacle-shaped hole 4a of the main body 4 is thicker, and the loop of the loop is found in the portion where the loop is thicker than the thickness of the filament. Therefore, the thickness can be reduced. s material Fee. ~ clothing k + month of the moon
其次形態。 以下參照圖5以及圖6並說明本翻的第2施 該實施形態_齡A1分別如圖5的縱剖面圖、及 圖二的沿著圖5之γ —丫線的剖面圖所示，包括 輪對A6以及罩殼A2，其中，此罩殼A2 對A6的前蓋八3及本體八4。上述齒輪對八6是=第^ ^ 動齒輪A61與第1從動齒輪A62相嚙合而構成的。Second form. Hereinafter, a second embodiment of the present embodiment will be described with reference to FIGS. 5 and 6 . The age A1 is as shown in the longitudinal cross-sectional view of FIG. 5 and the γ-丫 line along FIG. 5 of FIG. The wheel pair A6 and the casing A2, wherein the casing A2 is opposite to the front cover 八3 of the A6 and the body 八4. The gear pair eight 6 is formed by the meshing gear A61 meshing with the first driven gear A62.
更具體而言，於上述本體A4的前端部設置有眼鏡开 孔A4a，於由該眼鏡形孔A4a與前蓋A3所形成的空户 收納有齒輪對A6。而且，於本體A4中設置有軸承孔Α4χ A4y，上述軸承孔A4x、A4y與上述眼鏡形孔連通， 亚且分別使支持主動齒輪A61的輸入輸出軸A6u以及 持從動齒輪A62的軸A621插通。 —而且’前蓋A3具有與用於此種絲泵而眾所周 厨盍相同的結構。亦即’於前蓋3中設置有使上述輸 出軸AG11插通的軸承孔ASx以及使支持從動齒輪a : 軸A621插通的軸承孔A3y。並且，前蓋A3及本體A4萨 14 200813331 24696pif 由固定用螺栓A8而一體固定。外 、七认、土人，土，A 力外於上述刖盍A3與上 =輸讀出轴A611之間設置有油封Α9ι。而且，於圖6 中，藉由虛線來表示上述眼鏡形孔、 a6h ° 出轴A611猎由配置於上述前蓋A3的軸承孔A3x内 勺軸襯A92、以及配置於上述本體A4的轴承孔Μχ内的 ^襯Α92，而支持於罩殼Α2中。另—方面，從動齒輪α62 ’、兵由Α621體地形成。該軸Α621藉由配置於前蓋μ 的軸承孔A3y _軸襯Α92、以及配置於上述本體α4的 軸承孔A4y内的轴襯Α92，而支持於罩殼Α2中。 、而且，於本體Α4中，於其中一個侧面上設置有高壓 侧流迢口 Α41，❿於另—個侧面上設置有低壓側流道口 Α43。當齒輪對Α6作為泵而作動時，低壓側流道口 Α43 成為流入口，而高壓侧流道口 A41則成為流出口。高壓侧 流迢口 A41與收納上述齒輪機構A6的眼鏡形孔A4a連 通。另一方面，低壓侧流道口 A43包括：連接部A431以 及開口部A432，上述連接部A431與上述眼鏡形孔八知連 通且向後方延伸，上述開口部A432自上述連接部A431 的後端部朝向上述另一個侧面而穿設。另外，於圖6中， 藉由虛線來表示上述高壓側流道口 A41。 進而，於本實施形態中，在本體A4的設置有上述高 壓側流道口 A41的其中一個侧面上，進而設置有可以安裝 以洩放閥為代表的閥（省略圖示）的閥安裝部A44。並且， 為了使遺閥女裝部A44與上述低壓侧流道口 A43相連通， 1$ 200813331 24〇yt)pif 而與上述軸承孔A4x前後位置一致地設置有迴路A45。更 具月豆而3，穿設有下述形狀的孔，即，此孔乃是自上述開 口部A432開始、與第1軸承孔A4x的轴心保持大致固定 距離^並到達上述閥安裝部A44,且將該孔作為迴路A45。 胃夂忒齒輪泵A1作動時，與先前的齒輪泵同樣，自低 f侧流這口 A43將操作液體供給至主動齒輪A61與從動齒 輪A62的齒溝内，並使供給至該空間内的操作液體厣 吐出、。此時，由軸承孔她所支持的輸入& 、，由於液壓而受到朝向圖6中的右下方的作用。 亚且，在使安裝於上述閥安裝部A44中的閥（ 示）作動時’操作液體經過上述迴路A45而 地 壓側流道口 A43的上述開口部A432。 I低 、根據本實施形態的齒輪泵A1的結構，如上所述，與 ^述本體A4的上述轴承孔Μχ前後方向位置—致的方 :’而叹置有連通自上述閥安裝部Α44至低壓側通口 Μ 路撕’但該部位的厚度與設置有眼鏡形孔A4a 士 =立相比為較厚。目此，不會因為存在 士體Μ的強度有較大損失。而且，於本實施形態广是 將上达迴路Α45設置在圖6中的軸承孔—的上方，亦 =’相對於軸承孔Α4χ，而設置在與由 的輸入輸出軸她因液壓而受到的作用大致相反2 =因此，根據该硯點亦可認為，因設置迴路A#而對本 肢Μ的強度造成的損失較小。亦即，可以設置迴路Α45 而不會使本體Μ㈣度有較大損失，能夠節省配設如此 16 200813331 ^.HU^Opil 之齒輪栗A1及啊的零件健以及絲㈣ 鏡形孔A4a周圍的部位的厚度較厚，而i =二:?的形態相比，由於無須使本體A4自身的 材二費。％度退厚’因此可以節減製造本體A4時的 2實^卜態本發明並不限於以上所述的第1實施形態、第More specifically, the eyeglass opening A4a is provided at the front end portion of the main body A4, and the gear pair A6 is housed in the empty space formed by the eyeglass-shaped hole A4a and the front cover A3. Further, a bearing hole Α4χ A4y is provided in the main body A4, and the bearing holes A4x and A4y communicate with the spectacles-shaped hole, and the input/output shaft A6u supporting the driving gear A61 and the shaft A621 holding the driven gear A62 are respectively inserted. . - and the 'front cover A3' has the same structure as that used for such a wire pump. That is, the front cover 3 is provided with a bearing hole ASx through which the output shaft AG11 is inserted, and a bearing hole A3y through which the driven driven gear a: the shaft A621 is inserted. Further, the front cover A3 and the body A4 Sa 14 200813331 24696pif are integrally fixed by the fixing bolt A8. Outside, seven recognition, native, soil, A force is provided with an oil seal Α9ι between the above 刖盍A3 and the upper=transmission readout axis A611. Further, in Fig. 6, the eyeglass-shaped hole, the a6h° output shaft A611, the bushing A92 disposed in the bearing hole A3x of the front cover A3, and the bearing hole disposed in the body A4 are shown by broken lines. The inner lining 92 is supported in the casing Α2. On the other hand, the driven gear α62' and the soldier are formed by the body 621. The shaft 621 is supported by the casing 藉2 by a bearing hole A3y_shaft lining 92 disposed in the front cover μ and a bushing 92 disposed in the bearing hole A4y of the main body α4. Further, in the main body Α 4, a high pressure side flow port Α 41 is provided on one of the side faces, and a low pressure side flow path port Α 43 is provided on the other side. When the gear pair Α 6 is actuated as a pump, the low pressure side runner port Α 43 becomes the inflow port, and the high pressure side chute port A41 becomes the outflow port. The high pressure side flow port A41 communicates with the eyeglass-shaped hole A4a accommodating the gear mechanism A6. On the other hand, the low-pressure side runner A43 includes a connecting portion A431 and an opening A432. The connecting portion A431 communicates with the spectacle-shaped hole and extends rearward, and the opening A432 faces from the rear end portion of the connecting portion A431. The other side is pierced. Further, in Fig. 6, the high pressure side runner port A41 is indicated by a broken line. Further, in the present embodiment, a valve mounting portion A44 to which a valve (not shown) such as a relief valve can be attached is further provided on one side surface of the main body A4 on which the high pressure side flow passage opening A41 is provided. Further, in order to allow the valve female portion A44 to communicate with the low pressure side runner A43, 1$200813331 24〇yt)pif, a circuit A45 is provided in correspondence with the front and rear positions of the bearing hole A4x. More than the moon bean 3, a hole having a shape in which the hole is held from the opening A432 and held at a substantially fixed distance from the axis of the first bearing hole A4x and reaches the valve mounting portion A44 And the hole is taken as the loop A45. When the gastrostomy gear pump A1 is actuated, the port A43 is supplied from the low f side to the groove of the driving gear A61 and the driven gear A62 in the same manner as the previous gear pump, and is supplied to the space. Operate the liquid and spit it out. At this time, the input & which is supported by the bearing hole is subjected to the lower right side in FIG. 6 due to the hydraulic pressure. When the valve (shown) attached to the valve mounting portion A44 is actuated, the operating liquid passes through the circuit A45 to pressurize the opening A432 of the side runner A43. The configuration of the gear pump A1 according to the present embodiment is as described above, and the position of the bearing hole Μχ in the front-rear direction of the main body A4 is sighed and connected from the valve mounting portion Α44 to the low pressure. The side port Μ road tears 'but the thickness of the portion is thicker than the spectacles-shaped hole A4a. Therefore, there is no greater loss due to the strength of the corpus callosum. Further, in the present embodiment, it is widely provided that the upper circuit port 45 is disposed above the bearing hole of Fig. 6, and also = 'with respect to the bearing hole Α4χ, and is provided by the input and output shaft of the input and output shaft due to the action of the hydraulic pressure. Roughly opposite 2 = Therefore, according to this defect, it is considered that the loss of the strength of the limb is small due to the setting of the circuit A#. That is to say, the circuit Α45 can be set without a large loss of the body 四(4) degree, and the parts around the mirrored hole A4a of the gears A1 and ah of the 200813331 ^.HU^Opil can be saved. The thickness of the body is thicker, and the ratio of i = two: ? is not required because the body A4 itself is not required. Since the % degree is reduced in thickness, it is possible to reduce the number of states in which the main body A4 is manufactured. The present invention is not limited to the first embodiment and the first embodiment described above.
對的^本發财可適用於具有3對或3對以上的齒輪 …、々m、有2對齒輪對的齒輪栗，構成為 口，、有1個雨壓侧流道口及低壓側流道口、且使2對 ，的口齒合日$序錯開，的相位差齒輪泵，而與上述第1實施形 態般的齒輪泵不同。 、 、進2’亦可取代如上述第2實施形態之由前蓋及本體 構成罩殼的情況，^自本體及後蓋構鮮殼，並於該罩殼 的本體之設置有麻孔的部位，亦即眼鏡形孔的更前方^ 部位設置迴路。 “除此以外，文I於閥安裝部中的閥並不限於洩放閥， §然亦可Ull控偏轉其他_請目。 ▲另外，於不損害本發明的宗旨的範圍内亦可進行各種 變更。 [產業上的可利用性] 、，若有效利用本發明，利用在與本體的軸承孔相對應的 刖後方向位置上’與對應於眼鏡形孔的前後方向位置相 17The pair of money can be applied to gears with 3 pairs or more pairs..., 々m, gears with 2 pairs of gear pairs, configured as ports, 1 rain-pressure side runner and low-pressure side runner Further, the phase difference gear pump in which the pair of teeth of the two pairs are shifted in order is different from the gear pump of the first embodiment. In addition, in the case where the cover is formed by the front cover and the main body according to the second embodiment, the cover is formed from the main body and the rear cover, and the body of the cover is provided with a hole. , that is, the front part of the eyeglass-shaped hole is provided with a loop. "In addition, the valve in the valve mounting portion of the present invention is not limited to the bleeder valve, and the yoke can be deflected by Ull. ▲ In addition, various types can be performed without damaging the scope of the present invention. [Industrial Applicability], if the present invention is effectively utilized, the position in the rearward direction corresponding to the bearing hole of the main body is the same as the position in the front-rear direction corresponding to the spectacle-shaped hole.
200813331 z^oyopn 个菔的厚度相對較展 路。藉此，可以設置迴路又兄，且於如此位置上設置迴 能夠節省配設如此之齒，“吏，體的強度有較大損失， 而，與使本體的眼鏡形^周=的零件個數及安裳空間。進 部位設置迴路的形態相^的部位的厚度較厚，而於該 於先前的厚度，目此彳,^紐本體自相厚度厚 雖然本發明已^ 時的材料費。 限定本發明，任何所屬技術領域中具有通常非^ 脫離本發明之精神和範_， 因此本發明之伴謹範圍A、目&田 一 口午之更動與潤飾， 為準。 自錢社㈣補範圍所界定者 【圖式簡單說明] 闻圖1疋表不本發明帛i實施形態的齒輪泵的侧面剖面 圖° 圖2 =表示本發明第丨實施形態的齒輪泵的左側視圖。 圖31表示本發明第1實施形態的齒輪泵的右側視圖。 ® 4疋、/口者圖1的X 一 X線的剖面圖。 0 疋表示本發明笫2貫施形態的齒輪泵的側面剖面 圖。 圖6是沿著圖5的Y — Y線的剖面圖。 圖7疋表示先前的齒輪泵的侧面剖面圖。 圖8是沿著圖7的Z — Z線的剖面圖。 【主要兀件符號說明】 18 1 、A1、XI ··齒輪泵 200813331 24696pif 2、 A2、X2 :罩殼 3、 A3、X3 :前蓋 3x、3y、4x、4y、5x、5y、A3x、A3y、A4x、A4y : 軸承孔 ^ 4、A4、X4 :本體 - 4a :第1目艮鏡形孔 4b ··第2目艮鏡形孔 4W :中間隔壁 • 5、X5 :後蓋 6:第1齒輪對 7 :第2齒輪對 8、A8、X8 :螺栓 41 :第1高壓侧流道口 42 :第2高壓侧流道口 43、 A43、X43 :低壓侧流道口 44、 A44 :閥安裝部 參 45、A45 :迴路 61、 71、A61、X61 ··主動齒輪 62、 72、A62、X62 :從動齒輪 91、 A91 :油封 92、 A92 :軸襯 ’ 431、A431 :連接部 432、A432 :開口部 611、A611 :輸入輸出轴 19 200813331 24696pif 62卜 7Π、721、A621 ··軸 A4a、X4a :眼鏡形孔 A6、X6 :齒輪對 A41、X41 :高壓側流道口200813331 z^oyopn The thickness of the 菔 is relatively advanced. In this way, it is possible to set the loop and the brother, and setting back in such a position can save the allocation of such teeth, "吏, the strength of the body has a large loss, and the number of parts that make the shape of the body of the body = week = And the Anshang space. The thickness of the part where the shape of the loop is set is thicker, and in the previous thickness, the thickness of the self-phase of the body is thick, although the material cost of the invention has been limited. The present invention, in any field of the art, generally does not depart from the spirit and scope of the present invention, and therefore the scope of the present invention, the scope of the field and the movement of the field, is subject to change. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a side cross-sectional view showing a gear pump according to an embodiment of the present invention. FIG. 2 is a left side view showing a gear pump according to a third embodiment of the present invention. The right side view of the gear pump of the first embodiment. Fig. 1 is a cross-sectional view taken along the line X-X of Fig. 1. Fig. 6 is a side cross-sectional view showing the gear pump of the present invention. A cross-sectional view along the Y-Y line of Fig. 5. 7疋 shows a side cross-sectional view of the previous gear pump. Fig. 8 is a cross-sectional view taken along line Z-Z of Fig. 7. [Description of main components] 18 1 , A1, XI · Gear pump 200813331 24696pif 2, A2 , X2 : cover 3, A3, X3: front cover 3x, 3y, 4x, 4y, 5x, 5y, A3x, A3y, A4x, A4y: bearing hole ^ 4, A4, X4: body - 4a: 1st directory Mirror hole 4b · · 2nd 艮 mirror hole 4W : Middle partition wall 5 , X5 : Rear cover 6 : 1st gear pair 7 : 2nd gear pair 8 , A8 , X8 : Bolt 41 : 1st high side flow Crossing port 42: second high-pressure side chute port 43, A43, X43: low-pressure side chute port 44, A44: valve mounting portion reference 45, A45: circuit 61, 71, A61, X61 · · drive gear 62, 72, A62, X62 : driven gear 91, A91 : oil seal 92 , A92 : bushing ' 431 , A431 : connecting portion 432 , A432 : opening portion 611 , A611 : input/output shaft 19 200813331 24696pif 62 Bu 7Π, 721, A621 ··Axis A4a, X4a: Spectacle-shaped holes A6, X6: Gear pair A41, X41: High-pressure side runner
2020