JP2593251Y2 - Screw type oil pump - Google Patents

Description

【考案の詳細な説明】[Detailed description of the invention]

【０００１】[0001]

【産業上の利用分野】本考案は、トラクタや自動車のト
ランスミッシヨン等にオイルを供給するためのねじ形オ
イルポンプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw type oil pump for supplying oil to a tractor, a transmission of an automobile, or the like.

【０００２】[0002]

【従来の技術】トラクタや自動車のトランスミッション
等にオイルを供給するには，人力でオイル缶からオイル
をオイルジョッキに小分けをして行うか，手動または圧
縮空気で作動するオイルバケットポンプを用いて行って
いる。2. Description of the Related Art Oil is supplied to a tractor or a transmission of an automobile by manually dividing oil from an oil can into an oil mug, or manually or by using an oil bucket pump operated by compressed air. ing.

【０００３】[0003]

【考案が解決しようとする課題】上記オイルジョッキに
よる方法は，トランスミッション等の注油口が狭い箇所
に設けられている場合が多く，使用が限られていた。一
方，オイルバケットポンプは，給油ホース先端のオイル
ガンを注油口に挿入することによって，狭い箇所でもオ
イルの供給ができる。しかし，この種のものは，専用の
油槽の上面にバケットポンプを設け，この油槽にオイル
缶からオイルをあけ換えてポンプアップをするものであ
る。このオイルのあけ換えには，オイル缶を持ち上げな
ければならないなど，労力と手間が掛かっていた。The method using the oil mug described above is often provided at a location where a lubrication port such as a transmission is narrow, and its use has been limited. On the other hand, an oil bucket pump can supply oil even in a narrow place by inserting an oil gun at the tip of an oil supply hose into an oil inlet. However, in this type, a bucket pump is provided on the upper surface of a dedicated oil tank, and the oil is drained from an oil can into the oil tank to pump up. Changing the oil required labor and time, such as lifting the oil can.

【０００４】また，手動バケットポンプの場合は，バケ
ットレバーの１ストローク当たり吐出量が５０ｃｃ程度
と小さく，かなりの回数のレバー往復動が必要であり，
必ずしも作業が容易ではなかった。圧縮空気作動のオイ
ルバケットポンプは，作業が容易ではあるが，コンプレ
ッサ−が必要なので，価格が高くなり，作業時に騒音を
発生するという問題点があった。Further, in the case of a manual bucket pump, the discharge amount per stroke of the bucket lever is as small as about 50 cc, and a considerable number of reciprocating movements of the lever is required.
The work was not always easy. Compressed air operated oil bucket pumps are easy to work, but require a compressor, which increases the cost and causes noise during the work.

【０００５】ところで，農業には多くのトラクタが使用
されているが，農家の多くはトラクタを整備工場等に持
込み，オイルの供給や交換をしてもらっている。このト
ラクタの持込みには，かなりの手間と費用が掛かってい
るので，自家で使える安価なオイルポンプが要望されて
いた。By the way, many tractors are used for agriculture, but many farmers bring the tractors to a maintenance shop or the like to supply or exchange oil. Since bringing in this tractor requires considerable effort and cost, an inexpensive oil pump that can be used at home has been demanded.

【０００６】本考案は，上述の問題点や要望に鑑みてな
されたものであり，その目的とするところは，簡単容易
にオイル缶からオイルを直接汲み上げ可能なねじ形オイ
ルポンプを，比較的安価に提供しようとするものであ
る。The present invention has been made in view of the above problems and demands, and has as its object to provide a screw type oil pump which can easily and directly pump oil from an oil can, and which is relatively inexpensive. It is intended to provide.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するため
に，本考案のねじ形オイルポンプは，下端面を底板で密
閉したスリーブを，オイル缶の排油口に挿通自在にし，
長さをオイル缶の深さよりも長くする。前記底板は，上
面を中心部に軸受を凹所に形成したすり鉢状凹面にし，
前記スリーブの下端部両側壁に吸込口をそれぞれ穿設す
る。Means for Solving the Problems To achieve the above object, a screw type oil pump according to the present invention has a sleeve whose lower end face is sealed by a bottom plate, which can be freely inserted into an oil outlet of an oil can.
Make the length longer than the depth of the oil can. The bottom plate has a mortar-shaped concave surface with a bearing formed in a recess with the upper surface at the center,
A suction port is formed in each side wall of the lower end of the sleeve.

【０００８】また，前記スリーブの上端部にスリーブヘ
ッドの下端部を着脱可能に連結する。そして，このスリ
ーブヘッドを，下端部の内側中心部に空洞部を形成し,
下端部外周に前記空洞部に連通する吐出管を突設し，上
端部の内側中心部にオイルシールを付設した軸受部を設
けたものにする。 The lower end of the sleeve head is detachably connected to the upper end of the sleeve. Then, a hollow part is formed in the center of the inside of the lower end of this sleeve head,
A discharge pipe protruding from the lower end is connected to the cavity.
A bearing portion provided with an oil seal is provided at the center of the inside of the end .

【０００９】さらに，ねじ形回転子を前記スリーブとス
リーブヘッド内に設ける。すなわち，ねじ形回転子は，
前記スリーブに挿入して下端部を前記底板の軸受に軸支
するとともに，上端部を前記スリーブヘッドの軸受部に
軸支し上方に突出させた回転軸の外周に下端部から上方
へねじ部を複条に形成し，前記スリーブヘッドの空洞部
内において前記回転軸に羽根車を固設するものである。
そして，前記底板のすり鉢状凹面に前記回転軸下端部の
ねじ部裏面を摺動自在に当接させ，ねじ形オイルポンプ
を構成するものである。Further, a screw rotor is provided in the sleeve and the sleeve head. That is, the screw rotor is
Pivotally supporting the lower end portion in the bearing of the bottom plate is inserted into the sleeve
And the upper end is pivotally supported on the bearing portion of the sleeve head and projects upward from the lower end on the outer periphery of the rotating shaft.
To form a threaded portion in Fukujo is for fixedly provided the impeller Oite the rotary shaft inside the cavity of the sleeve head.
The screw-shaped oil pump is constituted by slidably abutting the back surface of the screw portion at the lower end of the rotating shaft on the mortar-shaped concave surface of the bottom plate.

【００１０】また，汲み上げ後に缶底に残留するオイル
量を少なくするために，前記スリーブを，下端部の内周
に底板を水平に固着し，この底板の上面を中心部に軸受
を凹所に形成したすり鉢状凹面にすると共に，底板周縁
部に吸込口を穿設し，前記底板の下面より下方に突出す
るスリーブ周壁を一部切り欠いたものにした。また，ポ
ンプの揚程を増加するために，前記ねじ形回転子を，回
転軸外周のねじ部上方に上向き軸流を発生するプロペラ
を固設したものにした。Further, in order to reduce the amount of oil remaining on the bottom of the can after pumping, the sleeve is fixed horizontally to a bottom plate on the inner periphery of a lower end portion, and a bearing is recessed around the upper surface of the bottom plate as a center. together to form the conical concave, the suction port is formed in the bottom plate periphery, and the sleeve wall projecting from beneath the lower surface of the bottom plate to that partially cutaway. Further, in order to increase the pump head, the screw-type rotor is provided with a propeller for generating an upward axial flow fixed above the screw portion on the outer periphery of the rotary shaft.

【００１１】[0011]

【作用】上述のように構成されたねじ形オイルポンプ
は，スリーブをオイル缶の排油口から下端が缶底に達す
るまで挿入すると，スリーブ下端部の吸込口は缶内のオ
イルを重力でスリーブ内に流入させる。スリーブヘッド
から上方に突出しているねじ形回転子の回転軸上端部に
適当な回転動力源を連結し，回転動力源を起動してねじ
形回転子を回転すると，複条のねじ部がスリーブ内のオ
イルを上方に螺旋送りをし，羽根車がスリーブヘッドの
空洞部内で回転軸と一体に回転してオイルを外側方に送
り，スリーブヘッド下端部の吐出管から外部に噴出させ
る。このとき，ねじ部が右ねじの場合は，ねじ形回転子
を上方から見て右回りに回転させるものである。回転動
力源の回転を停止すると，ねじ形回転子が停止し，自動
的にオイルの汲み上げが停止する。In the screw type oil pump constructed as described above, when the sleeve is inserted from the oil outlet of the oil can until the lower end reaches the bottom of the can, the suction port at the lower end of the sleeve transfers the oil in the can by gravity to the sleeve. Let it flow inside. When a suitable rotary power source is connected to the upper end of the rotary shaft of the screw rotor that protrudes upward from the sleeve head, and the rotary power source is started to rotate the screw rotor, the double threaded portion is inserted into the sleeve. The oil is spirally fed upward, and the impeller rotates integrally with the rotating shaft in the cavity of the sleeve head to send the oil outward, and ejects the oil from the discharge pipe at the lower end of the sleeve head to the outside. At this time, when the thread portion is a right-hand thread, the threaded rotor is rotated clockwise as viewed from above. When the rotation of the rotary power source stops, the screw rotor stops, and the pumping of oil stops automatically.

【００１２】上述の底板は，上面のすり鉢状凹面の下向
き傾斜面によって吸込口からスリーブ内へのオイルの流
入を容易にし，また，すり鉢状凹面とねじ形回転子下端
部のねじ部裏面との摺動自在な当接によって，ねじ部の
裏面に逃げるオイル量を減少させ，大部分のオイルをね
じ部の表面に載せ，効果的にオイルを上昇させる。The bottom plate described above facilitates the flow of oil from the suction port into the sleeve by the downwardly inclined surface of the mortar-shaped concave surface on the upper surface. the slidable contact, reduces the amount of oil escaping to the rear surface of the threaded portion, the majority of the oil was placing on the surface of the threaded portion, increases the effectiveness to oil.

【００１３】また，回転軸の下端部から上方の外周に複
条にねじ部を形成したねじ形回転子は，回転軸の１回転
でほぼ複条の条数回だけ吸込口から流入するオイルをね
じ部で上昇させ，ポンプの汲み上げ量を多くする。In addition, a screw-type rotor having a multi-threaded portion formed on the outer periphery of the rotary shaft from the lower end to the upper portion thereof is capable of supplying the oil flowing from the suction port approximately several times in multiple turns with one rotation of the rotary shaft. Raise the screw to increase the pumping amount.

【００１４】また，スリーブを，下端部内周に底板を水
平に固着し，底板の上面を中心部に軸受を凹所に形成し
たすり鉢状凹面にし，底板周縁部に吸込口を穿設し，底
板の下面から下方に突出するスリーブ周壁の一部を切り
欠いたものにした場合は，切り欠かれてない部分がスカ
ート部になって前記底板の下面とオイル缶底との間に間
隙を形成する。前記の底板周壁を切り欠いた部分はオイ
ルの通路となり，スリーブの下端部にオイルを流入さ
せ，この流入されるオイルを底板周縁部の吸込口がスリ
ーブ内に流入させる。そして，このスリーブは，スリー
ブ下端面と底板との間隙のごく少量のオイルだけをオイ
ル缶底に残し，オイルを汲み上げることができるように
する。A bottom plate is horizontally fixed to the inner periphery of the lower end of the sleeve, a mortar-shaped concave surface having a bearing formed in a recess at the center of the upper surface of the bottom plate, and a suction port is formed in the peripheral edge of the bottom plate. If from the lower surface of the one cut away portion of the sleeve wall which projects downwardly, while notched no part is turned skirt portion between the lower surface and the oil can bottom of the bottom plate <br / > Form a gap. The portion in which the peripheral wall of the bottom plate is cut off serves as an oil passage, and the oil flows into the lower end of the sleeve, and the suction oil at the peripheral edge of the bottom plate flows into the sleeve. The sleeve leaves only a small amount of oil in the gap between the lower end surface of the sleeve and the bottom plate at the bottom of the oil can so that the oil can be pumped.

【００１５】また，ねじ形回転子の回転軸外周のねじ部
上方に固設したプロペラは，スリーブ内を上昇してねじ
部を過ぎたオイルを，上向き軸流によってさらに上昇さ
せ，ポンプの揚程を増加させる。The propeller fixed above the threaded portion on the outer periphery of the rotating shaft of the screw type rotor further raises the oil passing through the threaded portion in the sleeve by the upward axial flow, thereby increasing the pump head. increase.

【００１６】[0016]

【実施例】実施例について図面を参照して説明する。図
１において，３３は市販の２０ｌ入り鋼板製のオイル缶
で，上面の周縁部に孔径３２．４ｍｍの排油口３４が設
けられている規格品である。１はスリーブであり，排油
口３４から缶内に抜き差し自在に挿入し，下端が缶底に
達すると上端部がオイル缶３３の上方に約８〜１０ｃｍ
突出するようになっている。スリーブ１は，外径３１．
８ｍｍ，内径２８．６ｍｍの薄鋼電線管を用い，下端面
を底板８で密閉している。An embodiment will be described with reference to the drawings. In FIG. 1, reference numeral 33 denotes a commercially available oil can made of a steel plate containing 20 liters, which is a standard product having an oil discharge port 34 having a hole diameter of 32.4 mm provided on a peripheral portion of an upper surface. Reference numeral 1 denotes a sleeve, which is freely inserted into and removed from the oil can through the oil drain port 34. When the lower end reaches the bottom of the can, the upper end thereof is about 8 to 10 cm above the oil can 33.
It is designed to protrude. The sleeve 1 has an outer diameter of 31.
A thin steel conduit tube having an inner diameter of 8 mm and an inner diameter of 28.6 mm is used, and the lower end surface is sealed with a bottom plate 8.

【００１７】底板８は，上面をすり鉢状凹面１０に形成
し，その中心部に軸受１１を凹所に形成している（図４
参照）。すり鉢状凹面１０は，好適な凹面の傾斜が水平
面に対し下向きに２１゜〜２３゜であり，後述するねじ
形回転子４，５の下端部のねじ部２３の裏面と摺動自在
に当接するようになっている。The bottom plate 8 has an upper surface formed in a mortar-shaped concave surface 10 and a bearing 11 formed in a concave portion at the center thereof (FIG. 4).
reference). The mortar-shaped concave surface 10 has a suitable inclination of the concave surface of 21 ° to 23 ° downward with respect to the horizontal plane, and is slidable with the back surface of the screw portion 23 at the lower end of the screw rotors 4 and 5 described later.
To come into contact with .

【００１８】さらに，スリーブ１の下端部の左右側壁に
は，吸込口１２および１３を対向に設けている（図４参
照）。吸込口１２，１３は，汲み上げ後の残量を少なく
するため，オイル缶底に近くなるように底板８の直上に
設け，正面視で後述のねじ部２３のリード角に近似の右
上がり緩傾斜にしたが，水平でも差支えない。吸込口の
開口寸法は，長さ１．６ｃｍ，幅１ｃｍである。Further, suction ports 12 and 13 are provided on the left and right side walls at the lower end of the sleeve 1 to face each other (see FIG. 4). The suction ports 12 and 13 are provided immediately above the bottom plate 8 so as to be close to the bottom of the oil can to reduce the remaining amount after the pumping, and have a gently rising rightward approximation to a lead angle of a screw portion 23 described later in a front view. But it can be horizontal. The opening size of the suction port is 1.6 cm in length and 1 cm in width.

【００１９】３はスリーブヘツドであり，スリーブ１の
上端部に直立に螺着３８を介し下端部を結合し，下端部
の内側中心部に空洞部１６を形成し，下端部外周に空洞
部１６と連通に吐出管１５を突設している。また，スリ
ーブヘツド３の上端部の内側中心部には，ボールベアリ
ング１８，１８とスペースカラー１９を内嵌し、後述 の
回転軸２２を軸支する軸受部１７を設けている。軸受部
１７の上方にはオイルシール２０を内嵌し，軸受部１７
とオイルシール２０の上方移動をスナップリング２１で
止めている（図３参照）。[0019] 3 is a sleeve head couples the lower portion via a threaded 38 upright on the upper end of the sleeve 1, a cavity 16 is formed in the inner center portion of the lower end portion, the cavity portion 16 to the lower end outer periphery A discharge pipe 15 is provided in communication with the discharge pipe. Further, ball bearings 18 and 18 and a space collar 19 are fitted in the center of the inside of the upper end of the sleeve head 3, and are described later .
The bearing unit 17 that supports the rotating shaft 22 is provided . An oil seal 20 is fitted over the bearing 17, and
The upward movement of the oil seal 20 is stopped by a snap ring 21 (see FIG. 3).

【００２０】４はねじ形回転子で，回転軸２２，ねじ部
２３および羽根車２４からなるものである。回転軸２２
は，スリーブ１に挿入し下端末部および上端部をそれぞ
れ底板８の軸受１１およびスリーブヘツド３の軸受部１
７，オイルシール２０に軸支すると共に，上端部をスリ
ーブヘッド３の上方に突出させるものである。ねじ部２
３は，回転軸２２の外周に軸受１１の上縁からスリーブ
１内の上端部まで形成し，外径が２７．６ｍｍ，ねじ幅
４ｍｍの角ねじを，ピッチ１６．５ｍｍ（リード３３ｍ
ｍ）の右ねじ２条に形成し，スリーブ１の内周との間隙
ｃが０．５ｍｍになっている。羽根車２４は，空洞部１
６内で回転軸２２に固設されている。Reference numeral 4 denotes a screw rotor, which comprises a rotary shaft 22, a screw portion 23, and an impeller 24. Rotating shaft 22
Are inserted into the sleeve 1 and the lower end portion and the upper end portion of the bearing portion 11 of the bottom plate 8 and the bearing portion 1 of the sleeve head 3, respectively.
7. It is supported by the oil seal 20 and has an upper end protruding above the sleeve head 3. Screw part 2
3 is formed on the outer periphery of the rotating shaft 22 from the upper edge of the bearing 11 to the upper end in the sleeve 1 and has a square screw having an outer diameter of 27.6 mm and a screw width of 4 mm, and a pitch of 16.5 mm (lead 33 m).
m), formed with two right-hand threads, and the gap c with the inner periphery of the sleeve 1 is 0.5 mm. The impeller 24 has a hollow portion 1
6 is fixed to the rotating shaft 22.

【００２１】ねじ形回転子４は，ねじ部２３が右ねじな
ので，上方から見て右回りに回転させてオイルを上方に
送るものである。羽根車２４は，高さ１３ｍｍの羽根６
枚を外径２６ｍｍに等間隔放射状に配置し，回転軸２２
に止め栓３０で固定されている（図１１参照）。Since the screw portion 23 has a right-hand thread, the screw rotor 4 is rotated clockwise as viewed from above to send oil upward. The impeller 24 is a 13 mm high blade 6
The sheets are arranged radially at equal intervals with an outer diameter of 26 mm.
Is fixed with a stopper 30 (see FIG. 11).

【００２２】次に，図２に示す実施例は，ねじ形回転子
５をスリーブ１内に挿入したものであり，その他の構成
は図１の場合と同一である。ねじ形回転子５は，回転軸
２２の下端部から上方にねじ部２３をオイル缶深の約１
／２の範囲に設けたものであり，ねじ形回転子４に比べ
て揚程が若干低下したが，実用上に問題がなかった。こ
のねじ形回転子５は，ねじ部２３を設ける範囲が短かい
ので，工作が容易である点が長所である。Next, in the embodiment shown in FIG. 2, the screw type rotor 5 is inserted into the sleeve 1, and the other configuration is the same as that in FIG. The screw-type rotor 5 has a screw portion 23 extending upward from the lower end of the rotary shaft 22 at an oil can depth of about 1 depth.
/ 2, and the head was slightly lower than that of the screw-type rotor 4, but there was no problem in practical use. The screw rotor 5 has an advantage in that the range in which the screw portion 23 is provided is short, so that machining is easy.

【００２３】図５〜図７は，別な実施例のスリーブ２を
示している。このものは，下端部の内周に底板９を水平
に固着し，図６，図７のように，底板９の周縁部を貫通
し吸込口１４を円弧状に設けたものである。底板９は，
前述の底板８と同じく上面をすり鉢状凹面１０に形成
し，その中心部に軸受１１を凹所に形成している。吸込
口１４は，円弧幅が９ｍｍ，円弧長が２０ｍｍである。FIGS. 5 to 7 show a sleeve 2 according to another embodiment. In this device, a bottom plate 9 is horizontally fixed to an inner periphery of a lower end portion, and a suction port 14 is provided in an arc shape through a peripheral portion of the bottom plate 9 as shown in FIGS. The bottom plate 9
As in the case of the above-mentioned bottom plate 8, the upper surface is formed in a mortar-shaped concave surface 10, and a bearing 11 is formed in a concave portion at the center thereof. The suction port 14 has an arc width of 9 mm and an arc length of 20 mm.

【００２４】また，スリーブ２は，オイルを吸込口１４
から吸い上げができるように，下端から４ｍｍ上方に底
板９を水平に固着し，底板９の下面下方の周壁を円周の
６等分箇所の一つおきを切り欠いて，切欠部２６とスカ
ート部２５に形成している。そして，スカート部２５が
オイル缶底に接すると，切欠部２６の間隙が４ｍｍにな
り，この間隙を通過させてオイルを吸込口１４に達する
ようにしている。The sleeve 2 is provided with an oil inlet 14.
Bottom, in 4mm upwardly from the lower end allow siphoning from
The plate 9 is fixed horizontally, and the peripheral wall below the lower surface of the bottom plate 9 is cut into every other six equally-spaced portions to form a notch 26 and a skirt 25. When the skirt portion 25 comes into contact with the bottom of the oil can, the gap between the notches 26 becomes 4 mm, and the oil passes through the gap to reach the suction port 14.

【００２５】図８〜図１０は，別な実施例のねじ形回転
子６および７を示している。これらは，ポンプの揚程を
増すために，前述したねじ形回転子４および５のねじ部
２３の上方に，それぞれプロペラ２７を回転軸２２に固
設したものである。プロペラ２７は，図９に示すよう
に，８枚の羽根２９をリング２８の外周に等間隔放射状
に突設し，リング２８を回転軸２２に外嵌して固定し，
回転によって上方への軸流を生じるように，羽根面が回
転方向に対し約３０゜前傾している。8 to 10 show screw rotors 6 and 7 of another embodiment. In these, a propeller 27 is fixedly mounted on the rotary shaft 22 above the screw portion 23 of the above-mentioned screw type rotors 4 and 5 in order to increase the head of the pump. Propeller 27, as shown in FIG. 9, projected eight blades 29 at equal intervals radially outer periphery of the ring 28, and fixed fitted the ring 28 to the rotating shaft 22,
The blade surface is inclined forward by about 30 ° with respect to the rotation direction so that the rotation causes an upward axial flow.

【００２６】本考案のねじ形オイルポンプは，種々の実
験を行って得た知見に基づいて考案をしたものである。
とくに，ねじ形回転子に関しては，ねじ部２３を上述と
同一の外径，ねじ幅およびピッチの角ねじ１条の場合を
試みたが，回転数約２，０００ｒｐｍで２０ｌオイル缶
の汲み上げに約２５分を要し，実用的な性能が得られな
かった。ねじ部２３を複条にすることによって，汲み上
げ量を増加させることができることを見出したのであ
る。The screw-type oil pump of the present invention has been devised based on the knowledge obtained through various experiments.
In particular, with regard to the screw rotor, an attempt was made to make the screw portion 23 a single square screw having the same outer diameter, screw width and pitch as described above, but it was necessary to pump a 20-liter oil can at a rotation speed of about 2,000 rpm. It took 25 minutes, and no practical performance was obtained. It has been found that the pumping amount can be increased by forming the screw portion 23 into a double thread.

【００２７】また，スリーブの下端部に設ける底板の上
面が水平の場合は，吸い上げ量が少なく，実用的なポン
プ性能が得られなかった。底板８あるいは９のように，
上面をすり鉢状凹面１０とし，この上面と回転軸２２下
端部のねじ部２３の裏面とを摺動自在に当接させたこと
によって，吸込口１２，１３，１４からスリーブ１，２
内に流入するオイルが，ねじ部２３の裏面とすり鉢状凹
面１０との間に僅かしか入らず、大部分がねじ部表面に
載せられて上方に運ばれるようになり，実用に適応する
ポンプ性能が得られたのである。When the upper surface of the bottom plate provided at the lower end of the sleeve is horizontal, the suction amount is small, and practical pump performance cannot be obtained. Like bottom plate 8 or 9,
The top surface and conical concave 10, by the rear surface of the upper surface and the rotary shaft 22 the lower end of the threaded portion 23 was slidably abutted against the sleeve from the suction port 12, 13, 14, 2
Oil, the rear surface of the threaded portion 23 and the cone-shaped concave that flows within
Only enter slightly between the surface 10, now mostly carried upwards placed on the threaded portion surface and the pump performance to adapt to practical use was obtained.

【００２８】図１２は，本考案のねじ形オイルポンプを
使用する態様の一例を示している。すなわち，ノス゛ル
３２を先端に備えた適当長のホース３１を，あらかじめ
吐出管１５に連結しておく。そして，スリーブ１をオイ
ル缶３３の排油口３４から下端が缶底に達するまで挿入
し，ノス゛ル３２の先端をトラクタ等のトランスミッシ
ョンの注油口に挿入する。つぎに，ねじ形回転子の回転
軸２２の上端部にチャック３６を緊締してポータブル電
動ドリル３５を連結する。ポータブル電動ドリル３５
は，出力０．３ＫＷで無断変速可能なものである。FIG. 12 shows an example of an embodiment using the screw type oil pump of the present invention. That is, a hose 31 of an appropriate length provided with a nozzle 32 at the tip is connected to the discharge pipe 15 in advance. Then, the sleeve 1 is inserted from the oil discharge port 34 of the oil can 33 until the lower end reaches the bottom of the can, and the tip of the nozzle 32 is inserted into a lubrication port of a transmission such as a tractor. Next, the portable electric drill 35 is connected to the upper end of the rotary shaft 22 of the screw rotor by tightening the chuck 36. Portable electric drill 35
Can be continuously changed at an output of 0.3 KW.

【００２９】そして，電気コード３７を電源に接続し，
ポータブル電動ドリル３５を起動すると，ねじ形回転子
が回転されオイル缶からオイルを汲み上げ，吐出管１５
からホース３１，ノズル３２を経てトランスミッション
にオイルが供給される。ポータブル電動ドリル３５の回
転数は，１，３００ｒｐｍ〜２，０００ｒｐｍが適当で
あり，ねじ形回転子４を装着した場合，回転数約２，０
００ｒｐｍで，ポンプ揚程が約１．６ｍ，汲み上げ量毎
分約３ｌとなり，従来のオイルバケットポンプに匹敵す
る性能が得られた。Then, the electric cord 37 is connected to a power source,
When the portable electric drill 35 is started, the screw-type rotor is rotated to pump up oil from the oil can and to discharge the oil from the discharge pipe 15.
The oil is supplied to the transmission through the hose 31 and the nozzle 32. The rotation speed of the portable electric drill 35 is suitably from 1,300 rpm to 2,000 rpm, and when the screw type rotor 4 is mounted, the rotation speed is about 2,000.
At 00 rpm, the pump head was about 1.6 m and the pumping rate was about 3 l / min, which was equivalent to the performance of a conventional oil bucket pump.

【００３０】また，プロペラ２７を備えたねじ形回転子
６では，汲み上げ量は上記とほぼ同じであったが，揚程
が約２ｍに増加した。ねじ形回転子５および７を装着し
たときは，それぞれねじ形回転子４および６を装着した
場合に比べて汲み上げ量が９０％程度であつた。なお，
上述の使用状態は，一般農家が農機補修用に持っている
ポータブル電動ドリルを動力源にするものであるが，回
転軸２２の上端部に電動機を結合したものにすること
も，もちろん可能である。In the screw rotor 6 provided with the propeller 27, the pumping amount was almost the same as above, but the head was increased to about 2 m. When the screw rotors 5 and 7 were mounted, the pumping amount was about 90% as compared with the case where the screw rotors 4 and 6 were mounted, respectively. In addition,
In the above-mentioned use condition, the portable electric drill which the general farmer has for repairing the agricultural machine is used as a power source. However, it is of course possible to connect the electric motor to the upper end of the rotating shaft 22. .

【００３１】[0031]

【考案の効果】本考案は，上述のとおり構成されている
ので，次に記載する効果を奏する。[Effects of the Invention] Since the present invention is configured as described above, the following effects can be obtained.

【００３２】スリーブをオイル缶の排油口に抜き差し自
在にしたことにより，ねじ形オイルポンプをオイル缶か
らオイルを直接汲み上げるものにすることができる。し
たがって，従来のオイルバケットポンプのように専用の
油槽を必要としないので，ポンプを安価にかつオイルの
あけ換えの必要がないものにすることができる。Since the sleeve can be freely inserted into and removed from the oil outlet of the oil can, the screw-type oil pump can pump oil directly from the oil can. Therefore, unlike the conventional oil bucket pump, a dedicated oil tank is not required, so that the pump can be made inexpensive and need not be changed.

【００３３】そして，スリーブヘッドの上方にねじ形回
転子の回転軸を突出させたことにより，この突出部に一
般に普及しているポータブル電動ドリルを結合してねじ
形回転子を回転するという簡単な操作で，オイル缶から
オイルを汲み上げることができる。また，スリーブの上
端部にスリーブヘツドを着脱可能に連結したことによ
り，ねじ形回転子の交換や内部点検が簡単なオイルポン
プを提供することがことができる。By protruding the rotary shaft of the screw-type rotor above the sleeve head, a portable electric drill, which is widely used, is connected to the protrusion to rotate the screw-type rotor. By operation, oil can be pumped from an oil can. In addition, the sleeve head is detachably connected to the upper end of the sleeve.
Ri, a simple replacement and internal inspection of the root Ji form the rotor Oirupon
Can be provided .

【００３４】また，スリーブ下端部の底板のすり鉢状凹
面の上面と，この底板中心部の軸受に下端部を軸支した
ねじ形回転子のねじ部の下端部裏面とを，摺動自在に当
接させたことにより，スリーブ下端部の吸込口から流入
するオイルを，ねじ部裏面に入らずにほとんどをねじ部
表面に載せることができるので，ポンプの汲み上げ能率
を良好にすることができる。Further, the upper surface of the mortar-shaped concave surface of the bottom plate at the lower end of the sleeve and the lower surface of the lower end of the screw portion of the screw type rotor whose lower end is supported by the bearing at the center of the bottom plate are slidably contacted.
By contact , most of the oil flowing from the suction port at the lower end of the sleeve can be placed on the surface of the screw portion without entering the back surface of the screw portion, so that the pumping efficiency of the pump can be improved.

【００３５】さらに，ねじ形回転子のねじ部を複条にし
たことにより，スリーブ下端部の吸込口に流入するオイ
ルを，ねじ形回転子の１回転で複条の条数回だけ上方に
運び，ポンプの汲み上げ量を増加させることができる。
また，ねじ部がスリーブ内のオイル中で回転するので，
オイルポンプが全く騒音のないものになる。Further, the threaded portion of the screw-type rotor is formed into a plurality of threads, so that the oil flowing into the suction port at the lower end of the sleeve is carried upward by a plurality of turns of the plurality of threads in one rotation of the screw-type rotor. ， Pumping amount of pump can be increased.
Also, since the screw rotates in the oil inside the sleeve,
The oil pump is completely silent.

【００３６】また，羽根車をスリーブヘッドの下端中心
部の空洞部内で回転するようにねじ形回転子に固設した
ことにより，ねじ部で垂直に上昇されるオイルを羽根車
の回転で外側方に方向を変え，流速を低下させずに吐出
管から排出することができるので，迅速な汲み上げを可
能にすると共に，到達距離を増加させることができる。
Also, the impeller is fixed to the screw-type rotor so as to rotate in the hollow portion at the center of the lower end of the sleeve head, so that the oil vertically raised by the screw portion is moved outward by the rotation of the impeller. ging the direction, can be discharged from the discharge pipe without lowering the flow rate, while allowing rapid pumping, it is possible to increase the reach.

【００３７】請求項２の底板をスリーブ下端に設けた場
合は，吸込口とオイル缶の底面との間隙を小さくするこ
とができるので，汲み上げ後にオイル缶に残留するオイ
ルの量を僅少にすることができる。また，ねじ形回転子
のねじ部上方にプロペラを設けることにより，ねじ部で
上方に運ばれたオイルを軸流で上昇させ，ポンプの揚程
を増加させることができる。When the bottom plate is provided at the lower end of the sleeve, the gap between the suction port and the bottom surface of the oil can can be reduced, so that the amount of oil remaining in the oil can after pumping is reduced. Can be. In addition, by providing a propeller above the screw portion of the screw rotor, the oil carried upward by the screw portion can be raised by the axial flow, and the pump head can be increased.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本考案のねじ形オイルポンプをオイル缶に挿入
し，中央部を縦に破断した正面図。FIG. 1 is a front view of a screw-type oil pump according to the present invention inserted into an oil can and having a central portion cut vertically.

【図２】オイル缶に挿入した別な実施例のねじ形オイル
ポンプ中央部の一部を，縦に破断した正面図。FIG. 2 is a front view in which a part of the center part of a screw type oil pump of another embodiment inserted into an oil can is cut vertically.

【図３】図１のねじ形オイルポンプの平面図。FIG. 3 is a plan view of the screw type oil pump of FIG. 1;

【図４】スリーブ下端部の要部右側面図。FIG. 4 is a right side view of a main part of a lower end portion of a sleeve.

【図５】別な実施例のスリーブ下端部の要部右側面図。FIG. 5 is a right side view of a main part of a lower end portion of a sleeve according to another embodiment.

【図６】図５の底面図。FIG. 6 is a bottom view of FIG. 5;

【図７】Ａ−Ａ線矢視の断面図。FIG. 7 is a sectional view taken along line AA.

【図８】別な実施例のねじ形回転子の一部省略の正面
図。FIG. 8 is a partially omitted front view of a screw rotor according to another embodiment.

【図９】Ｂ−Ｂ線矢視の断面図。FIG. 9 is a cross-sectional view taken along line BB.

【図１０】さらに別な実施例のねじ形回転子の一部省略
の正面図。FIG. 10 is a partially omitted front view of a screw rotor according to still another embodiment.

【図１１】回転軸に固設した羽根車の要部斜視図。FIG. 11 is a perspective view of an essential part of an impeller fixed to a rotating shaft.

【図１２】使用時の一態様を例示した斜視図。FIG. 12 is a perspective view illustrating an example of use.

【符号の説明】[Explanation of symbols]

１，２ スリーブ ３ スリーブヘッド ４，５，６，７ ねじ形回転子 ８，９ 底板 １０ すり鉢状凹面 １１ 軸受 １２，１３，１４ 吸込口 １５ 吐出管 １６ 空洞部 １７ 軸受部 １８ ボールベアリング ２０ オイルシール ２２ 回転軸 ２３ ねじ部 ２４ 羽根車 ２５ スカート部 ２６ 切欠部 ２７ プロペラ ３３ オイル缶 ３４ 排油口 1, 2 sleeve 3 sleeve head 4, 5, 6, 7 screw type rotor 8, 9 bottom plate 10 mortar-shaped concave surface 11 bearing 12, 13, 14 suction port 15 discharge pipe 16 cavity 17 bearing 18 ball bearing 20 oil seal 22 rotating shaft 23 screw part 24 impeller 25 skirt part 26 notch part 27 propeller 33 oil can 34 oil drain port

Claims (3)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項１】オイル缶の排油口に抜き差し自在にかつオ
イル缶の深さより長くし，下底面を底板（８）で密閉
し，この底板（８）の上面を中心部に軸受（１１）を凹
所に形成したすり鉢状凹面（１０）にし，下端部の左右
側壁に吸込口（１２，１３）を穿設したスリーブ（１）
と，前記スリーブ（１）の上端部に下端部を着脱可能に
連結し，下端部の内側中心部に空洞部（１６）を形成
し，この空洞部に連通する吐出管（１５）を下端部外周
に突設し，オイルシール（２０）を付設した軸受部（１
７）を上端部の内側中心部に設けたスリーブヘッド
（３）と，前記スリーブ（１）に挿入し下端部を前記軸
受（１１）に軸支し，上端部を前記軸受部（１７）に軸
支し，スリーブヘッド上方に突出させた回転軸（２２）
の下端部から上方の外周に，複条のねじ部（２３）を前
記スリーブ（１）内に形成し，羽根車（２４）を前記空
洞部（１６）内の前記回転軸（２２）に固設したねじ形
回転子（４，５）とから成り，前記すり鉢状凹面（１
０）に前記回転軸下端部のねじ部（２３）の裏面を摺動
自在に当接させたねじ形オイルポンプ。An oil can is freely inserted into and removed from an oil discharge port of the oil can, and is made longer than the depth of the oil can. The lower bottom surface is sealed with a bottom plate (8), and the upper surface of the bottom plate (8) is centered on a bearing (11). Sleeve (1) having a mortar-shaped concave surface (10) formed in a recess, and suction holes (12, 13) formed in the left and right side walls at the lower end.
And a lower end portion detachably connected to the upper end portion of the sleeve (1), a hollow portion (16) is formed in a central portion inside the lower end portion, and a discharge pipe (15) communicating with the hollow portion is connected to the lower end portion. A bearing (1) protruding from the outer periphery and having an oil seal (20)
7) is inserted into the sleeve (1) and the sleeve head (3) provided at the center of the upper end, and the lower end is axially supported by the bearing (11), and the upper end is mounted on the bearing (17). journalled rotary shaft which projects upwards sleeves head (22)
A plurality of threaded portions (23) are formed in the sleeve (1) on the outer periphery from the lower end to the upper side, and an impeller (24) is fixed to the rotating shaft (22) in the hollow portion (16). And the mortar-shaped concave surface (1).
Sliding the back surface of the screw portion of the rotary shaft lower end portion (23) to 0)
A screw-type oil pump freely contacted . 【請求項２】スリーブ（２）が，下端部内周に底板
（９）を水平に固着し，前記底板（９）の上面を中心部
に軸受（１１）を凹所に形成したすり鉢状凹面（１０）
にすると共に，底板（９）の周縁部に吸込口（１４）を
穿設し，前記底板（９）の下面より下方に突出する周壁
を一部切り欠いたものである請求項１記載のねじ形オイ
ルポンプ。2. A sleeve (2) is a bottom plate (9) fixed water earnestly in the circumferential lower end portion, bowl-shaped concave upper surface forming a bearing (11) in a recess in the center of the bottom plate (9) (10)
The screw according to claim 1, wherein a suction port (14) is formed in a peripheral portion of the bottom plate (9), and a peripheral wall protruding downward from a lower surface of the bottom plate (9) is partially cut away. Type oil pump. 【請求項３】ねじ形回転子（６）および（７）が，前記
回転軸（２２）に上向き軸流を生ずるプロペラ（２７）
を，それぞれ前記ねじ形回転子（４）および（５）のね
じ部（２３）上方に固設したものである請求項１又は２
記載のねじ形オイルポンプ。3. A propeller (27) for producing an upward axial flow in said rotating shaft (22) by means of a screw rotor (6) and (7).
Are fixed above the threaded portions (23) of the screw rotors (4) and (5), respectively.
Threaded oil pump as described.