JP3046162U - Screw jack - Google Patents
Screw jackInfo
- Publication number
- JP3046162U JP3046162U JP1997006313U JP631397U JP3046162U JP 3046162 U JP3046162 U JP 3046162U JP 1997006313 U JP1997006313 U JP 1997006313U JP 631397 U JP631397 U JP 631397U JP 3046162 U JP3046162 U JP 3046162U
- Authority
- JP
- Japan
- Prior art keywords
- screw
- cylinder
- auxiliary
- stopper
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
(57)【要約】
【課題】 ジャッキにおいて、主ねじ軸の上端に設けた
ストッパーと補助ねじ筒が上昇して、内ねじ上端部が突
き当る時、突き当て部の許容トルクを越えると、ストッ
パーが破損したり内ねじが破壊する等の事故があった。
【解決手段】 スクリュージャッキにおいて、主ねじ軸
４の上端に設けたストッパーと補助ねじ筒８に設けた内
ねじ８ａが主ねじ軸４の回動で補助ねじ筒８を、ストッ
パーに突き当るまで摺動上昇させた時、前記上端に設け
たストッパーは前記補助ねじ筒８の内側ねじ８ａの上部
を直角面で受止めるかフランジ部で受止めるようにして
破損を防止した構造。
(57) [Summary] [PROBLEMS] In a jack, when a stopper provided at the upper end of a main screw shaft and an auxiliary screw cylinder rise and the upper end of an inner screw abuts, the stopper exceeds the allowable torque of the abutting portion. There were accidents such as breakage of the internal thread and breakage of the internal screw. SOLUTION: In a screw jack, a stopper provided at an upper end of a main screw shaft 4 and an inner screw 8a provided in an auxiliary screw tube 8 slide the auxiliary screw tube 8 by rotation of the main screw shaft 4 until the auxiliary screw tube 8 hits the stopper. A structure in which the stopper provided at the upper end receives the upper portion of the inner screw 8a of the auxiliary screw cylinder 8 at a right angle plane or at a flange portion when the ascent is raised, thereby preventing damage.
Description
【０００１】[0001]
本考案は自動車等の扛重体を扛重するに用いるスクリュージャッキで、更に詳 しくは、スクリュージャッキの上昇する時（例えば主ねじの上端部に設けたスト ッパ部）の改良に関する。 The present invention relates to a screw jack used for lifting a lifting body of an automobile or the like, and more particularly, to an improvement when a screw jack is lifted (for example, a stopper provided at an upper end of a main screw).
【０００２】[0002]
従来主に自動車のスクリュージャッキとして用いられているものは、ケース本 体は一般に本体を伸縮する三段式スクリュージャッキである。 Conventionally, as a screw jack of an automobile, the case body is generally a three-stage screw jack that expands and contracts the main body.
【０００３】 前記三段式スクリュージャッキは通常使用する時例えば内筒の上端に回転可能 に嵌着した受金に荷重を負荷してジャッキを上昇させるが、この作動する時半径 の小さい主ねじ軸と補助ねじ筒間で、先ずねじ面を摺動し、上昇移動して主ねじ 軸上端に設けたストッパーと、補助ねじ筒のねじ上端部が当たるまで摺動移動す る。更に、その後、補助ねじ筒は内筒との間で補助ねじ筒の外周ねじと内筒に設 けたねじとが摺動して内筒は上昇する構成となっており、この三段式スクリュー ジャッキは公知である。[0003] When the three-stage screw jack is normally used, for example, a load is applied to a receiver rotatably fitted to the upper end of the inner cylinder to raise the jack, and when this operation is performed, the main screw shaft having a small radius is operated. First, the screw surface is slid between the and the auxiliary screw cylinder, and then the ascending movement is performed until the stopper provided at the upper end of the main screw shaft and the upper end of the auxiliary screw cylinder are in contact with each other. Further, after that, the outer cylinder of the auxiliary screw cylinder and the screw provided on the inner cylinder slide between the inner cylinder and the inner cylinder, so that the inner cylinder rises. Is known.
【０００４】[0004]
前記で述べたジャッキでは、主ねじ軸のねじと補助ねじ筒のねじ間の摺動時、 この軸トルクをＴ1 とし、補助ねじ筒の外ねじ、内筒の内ねじ間の軸トルクをＴ 2 とすると、ストッパーピン及び補助ねじ筒の内ねじ上端部の負荷トルクＴは、 Ｔ＝Ｔ2 −Ｔ1 となってＴが許容荷重を越えた場合ストッパーピンが破損したり 補助ねじ筒のねじが破裂し、場合によっては事故となることがある。 In the jack described above, when sliding between the screw of the main screw shaft and the screw of the auxiliary screw cylinder, this shaft torque is set to T1 And the shaft torque between the outer screw of the auxiliary screw cylinder and the inner screw of the inner cylinder is T Two Then, the load torque T at the upper end of the inner thread of the stopper pin and the auxiliary screw cylinder is T = TTwo -T1 If T exceeds the allowable load, the stopper pin may be damaged or the screw of the auxiliary screw cylinder may burst, and in some cases, an accident may occur.
【０００５】 また、前記ジャッキの主ねじ軸の上端に設けてある一般的なストッパーピンは 、図５に示すようにその構成は、ストッパーピンａは主ねじ軸ｂの軸心に向けて 打込まれ、従ってストッパピンａの当り面と、補助ねじ筒ｃの内ねじの上部との 当り部Ａは角度θによって突き当てられている。そのため突き当て力Ｆは、２つ の分力ｍ、ｎとなり分力ｎは補助ねじの破裂に対する影響が極めて大きいことに なる。A general stopper pin provided on the upper end of the main screw shaft of the jack has a structure as shown in FIG. 5, in which the stopper pin a is driven toward the axis of the main screw shaft b. Therefore, the contact portion A between the contact surface of the stopper pin a and the upper portion of the inner screw of the auxiliary screw cylinder c is abutted at an angle θ. Therefore, the butting force F becomes two component forces m and n, and the component force n has an extremely large effect on the rupture of the auxiliary screw.
【０００６】[0006]
本発明は前記実情に鑑み、この課題に対処するために創案したもので、即ち、 中央凹部にスラスト軸受を設けたベッド上にケース本体を取付け、前記スラスト 軸受上には外周にねじを螺設し上端部にストッパを設けた主ねじ軸を直立させて 設けた大傘歯車を設け、更に大傘歯車には、ケース本体の外部からの駆動で回転 させる小傘歯車を噛合せて、大傘歯車を介して回転する主ねじ軸と噛合う補助ね じ筒の内ねじ及び補助ねじ筒の外周螺設したねじと噛合う内筒の内ねじからなる ジャッキであって、前記主ねじ軸の上端に設けたストッパは、前記補助ねじ筒の 内側ねじ山切上部を直角面で受止めるか、上端に設けたフランジによって受止め るようにしたスクリュージャッキを提供するものである。 In view of the above circumstances, the present invention has been devised to address this problem, that is, a case body is mounted on a bed provided with a thrust bearing in a central recess, and a screw is screwed on the outer circumference on the thrust bearing. A large bevel gear with a main screw shaft with a stopper at the upper end is provided upright, and a large bevel gear is meshed with a large bevel gear that is rotated by driving from outside the case body. A jack comprising an inner screw of an auxiliary screw cylinder meshing with a main screw shaft rotating via a gear and an inner screw of an inner cylinder meshing with a screw provided on an outer peripheral thread of the auxiliary screw cylinder, wherein an upper end of the main screw shaft is provided. The stopper provided in the first embodiment provides a screw jack in which the inner threaded upper portion of the auxiliary screw cylinder is received by a right angle plane or is received by a flange provided at an upper end.
【０００７】[0007]
本考案はスクリュージャッキの主ねじ軸の上端に設けたストッパーと補助ねじ 筒の内ねじ上端部が突き当るまで補助ねじ筒を摺動上昇し、更に、内筒を上昇さ せようとした時、前記突き当り部にかかるトルクＴが突き当て部の許容トルクを 越えるとストッパー部が破損したり補助ねじ筒の内ねじが破裂する等の事故の発 生を防ぐためのストッパの改良に係るスクリュージャッキの一実施例を示したも ので以下に図に基いて具体的に説明する。 In the present invention, when the stopper provided at the upper end of the main screw shaft of the screw jack and the upper end of the inner screw of the auxiliary screw cylinder are slid up the auxiliary screw cylinder, and further when the inner cylinder is to be raised, If the torque T applied to the abutting portion exceeds the allowable torque of the abutting portion, the screw jack according to the improved stopper for preventing the occurrence of an accident such as breakage of the stopper portion or rupture of the internal screw of the auxiliary screw cylinder, etc. An embodiment will be described below in detail with reference to the drawings.
【０００８】 １はジャッキケース本体で、このケース本体１はアルミ又はＦＣ鋳造或いは鋼 板等によりなるケース１ａと、ケース１ａの上端に設けた筒体１ｂを溶接等で一 体化構造として成形されている。２は、鋼材等により略方形に成形したベッドで 、このベッド２の中央部は凹部２ａになっており、その凹部２ａの底面はベッド ２を接地面Ｗ上においた時接地面Ｗと同一面となるようにしてある。またベッド ２上には、前記ケース本体１のケース１ａのフランジ部１ｃを載せリベット等に よりベッド２上に取付けてある。Reference numeral 1 denotes a jack case main body. The case main body 1 is formed by integrally forming a case 1a made of aluminum or FC casting or a steel plate and a cylindrical body 1b provided at an upper end of the case 1a by welding or the like. ing. Reference numeral 2 denotes a bed formed of a steel material or the like into a substantially rectangular shape. The center of the bed 2 is a concave portion 2a, and the bottom surface of the concave portion 2a is flush with the ground surface W when the bed 2 is placed on the ground surface W. It is made to become. The flange 1c of the case 1a of the case main body 1 is mounted on the bed 2 and mounted on the bed 2 by rivets or the like.
【０００９】 前記ベッド２の中央凹部２ａ上にはスラスト軸受３を設けると共に、このスラ スト軸受３上に、外周にねじ４ａを螺設した主ねじ軸４の下端をノック等により 固定して直立縦設させた大傘歯車５を載せ、更に、この大傘歯車５は、大傘歯車 ５の中心を結び傾斜線上の前記ケース１ａに溶接等で一体に設けた前記軸受部１ ｄに軸受した軸６ａの小傘歯車６を噛合わせてある。また小傘歯車６の軸６ａの 端部にはハンドル継手７を設けてハンドル継手７を経て外部からの駆動を、小傘 歯車６を介して大傘歯車５を回転するようにしてある。A thrust bearing 3 is provided on the central recess 2 a of the bed 2, and the lower end of a main screw shaft 4 having a screw 4 a provided on the outer periphery is fixed on the thrust bearing 3 by knocking or the like to stand upright. The vertically mounted large bevel gear 5 was mounted thereon, and the large bevel gear 5 was mounted on the bearing portion 1d which was connected to the center of the large bevel gear 5 and integrally provided with the case 1a on the inclined line by welding or the like. The small bevel gear 6 of the shaft 6a is engaged. A handle joint 7 is provided at the end of the shaft 6a of the small bevel gear 6, so that the drive from the outside via the handle joint 7 rotates the large bevel gear 5 via the small bevel gear 6.
【００１０】 更に、前記主ねじ軸４の上端側にはストッパーピンＰを設け、しかも外周ねじ ４ａには、内側の下部に螺設したねじ８ａと、外周にねじ８ｂを螺設した補助ね じ筒８の前記下部側の内ねじ８ａを噛合わさせ、更に外周ねじ８ｂは、下部側の 内側にねじ９ａを設けて、しかも外周の一部に溝９ｂを縦設した内筒９の前記内 ねじ９ａを噛合わせ、更に、前記溝９ｂには、前記ケース本体１の筒体１ｂに摺 嵌した外筒１０の上部側に内側に向けて打出した係合部１０ａを嵌め、内筒９の 昇降時の回転を防ぐと共に、この係合部１０ａによって内筒９を案内すると共に 内筒９の抜出しを防いでいる。[0010] Further, a stopper pin P is provided on the upper end side of the main screw shaft 4, and an auxiliary screw 4a is provided on the outer peripheral screw 4a. The inner screw 8a on the lower side of the cylinder 8 is meshed, and the outer peripheral screw 8b is further provided with a screw 9a on the inner side on the lower side, and the groove 9b is vertically provided on a part of the outer circumference. A screw 9a is meshed, and an engaging portion 10a projecting inward is fitted into the groove 9b on the upper side of the outer cylinder 10 slidably fitted on the cylindrical body 1b of the case main body 1. The rotation at the time of lifting and lowering is prevented, and the inner cylinder 9 is guided by the engagement portion 10a, and the inner cylinder 9 is prevented from being pulled out.
【００１１】 また、外筒１０の外周には下部を残して溝１０ｂを縦設し、この溝１０ｂに前 記本体１の筒体１ｂの上部に設けた内に向けて打出した係合片１ｅを嵌めて外筒 １０の案内と共に抜出しのストッパとしてある。A groove 10b is vertically provided on the outer periphery of the outer cylinder 10 while leaving a lower portion, and an engagement piece 1e is provided in the groove 10b, which is provided at an upper portion of the cylinder 1b of the main body 1 and is protruded toward the inside. To guide the outer cylinder 10 to serve as a stopper for removal.
【００１２】 前記内筒９の上端には、被扛重体例えば自動車等を載せた時に受ける受金１１ を回転可能に嵌着させてある。At the upper end of the inner cylinder 9, a receiving member 11 received when a body to be lifted such as an automobile is mounted is rotatably fitted.
【００１３】 更に、前記ストッパーを補助ねじ筒８の内ねじ８ａの破損を防ぐようにストッ パーピンＰを図４ａ、４ｂに示すようにピンＰの突き当り面を主ねじ軸４の中心 軸線と平行となるように打込み又は、溶接して切削加工を施してある。Further, the stopper pin is used to prevent the inner screw 8a of the auxiliary screw cylinder 8 from being damaged, and the stop surface of the stopper pin P is aligned with the center axis of the main screw shaft 4 as shown in FIGS. It is driven or welded so as to be cut.
【００１４】 また別の実施例として主ねじ軸の上端にはストッパピンに代えてフランジＦを 設けて、このフランジＦによって補助ねじ筒８の内ねじ８ａの上端をフランジ面 によって受止めるようにしてある。As another embodiment, a flange F is provided at the upper end of the main screw shaft instead of the stopper pin, and the upper end of the inner screw 8a of the auxiliary screw tube 8 is received by the flange surface. is there.
【００１５】[0015]
本考案は上述のように主ねじ軸上端に設けたストッパが補助ねじ筒の内ねじ上 端の破損を防ぐように、ストッパ当り面と補助ねじ筒の内ねじ山切上部との当り 部は角度を有しないで直角に当るようにしたもので、当り力は分力を生じない形 状としたのでストッパの破損は防止でき、また補助ねじ筒に設けた内ねじ破損等 による事故を防止できる顕著な効果がある。 In the present invention, the contact between the stopper contact surface and the inner thread cut upper part of the auxiliary screw cylinder is angled so that the stopper provided at the upper end of the main screw shaft prevents the upper end of the inner screw of the auxiliary screw cylinder as described above. It has a shape that does not generate a component force because it has a right angle without having a hole.It is possible to prevent damage to the stopper, and to prevent accidents due to damage to the internal screw provided on the auxiliary screw cylinder. Has a significant effect.
【提出日】平成９年１０月１５日[Submission date] October 15, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【０００１】[0001]
本考案は自動車等の扛重体を扛重するに用いるスクリュージャッキで、更に詳 しくは、スクリュージャッキの上昇する時（例えば主ねじの上端部に設けたスト ッパ部）の改良に関する。 The present invention relates to a screw jack used for lifting a lifting body of an automobile or the like, and more particularly, to an improvement when a screw jack is lifted (for example, a stopper provided at an upper end of a main screw).
【０００２】[0002]
従来主に自動車のスクリュージャッキとして用いられているものは、ケース本 体は一般に本体を伸縮する三段式スクリュージャッキである。 Conventionally, as a screw jack of an automobile, the case body is generally a three-stage screw jack that expands and contracts the main body.
【０００３】 前記三段式スクリュージャッキは通常使用する時例えば内筒の上端に回転可能 に嵌着した受金に荷重を負荷してジャッキを上昇させるが、この作動する時半径 の小さい主ねじ軸と補助ねじ筒間で、先ずねじ面を摺動し、上昇移動して主ねじ 軸上端に設けたストッパーと、補助ねじ筒のねじ上端部が当たるまで摺動移動す る。更に、その後、補助ねじ筒は内筒との間で補助ねじ筒の外周ねじと内筒に設 けたねじとが摺動して内筒は上昇する構成となっており、この三段式スクリュー ジャッキは公知である。[0003] When the three-stage screw jack is normally used, for example, a load is applied to a receiver rotatably fitted to the upper end of the inner cylinder to raise the jack, and when this operation is performed, the main screw shaft having a small radius is operated. First, the screw surface is slid between the and the auxiliary screw cylinder, and then the ascending movement is performed until the stopper provided at the upper end of the main screw shaft and the upper end of the auxiliary screw cylinder are in contact with each other. Further, after that, the outer cylinder of the auxiliary screw cylinder and the screw provided on the inner cylinder slide between the inner cylinder and the inner cylinder, so that the inner cylinder rises. Is known.
【０００４】 前記ジャッキは、主ねじ軸のねじと補助ねじ筒のねじ間の摺動時、この軸トル クをＴ1 とし、補助ねじ筒の外ねじ、内筒の内ねじ間の軸トルクをＴ2 とすると 、ストッパピン及び補助ねじ筒の内ねじ上端部の負荷トルクＴは、Ｔ＝Ｔ2 −Ｔ 1 となってＴが許容荷重を越えた場合ストッパピンが破損したり補助ねじ筒のね じが破裂し、場合によっては事故となることがある。When the jack slides between the screw of the main screw shaft and the screw of the auxiliary screw cylinder, the jack reduces the torque of the shaft to T.1 And the shaft torque between the outer screw of the auxiliary screw cylinder and the inner screw of the inner cylinder is TTwo Then, the load torque T at the upper end of the inner thread of the stopper pin and the auxiliary screw cylinder is T = TTwo -T 1 If T exceeds the allowable load, the stopper pin may be damaged or the screw of the auxiliary screw cylinder may burst, and in some cases, an accident may occur.
【０００５】 また、前記ジャッキの主ねじ軸の上端に設けてある一般的なストッパピンは、 図５に示すように主ねじ軸ｂの軸心に向けて打込まれ、従ってストッパピンａの 当り面と、補助ねじ筒ｃの内ねじの上部との当り部Ａは角度θによって突き当て られている。そのため突き当て力Ｆは、２つの分力ｍ、ｎとなり分力ｎは補助ね じの破裂に対する影響が極めて大きいことになる。A general stopper pin provided at the upper end of the main screw shaft of the jack is driven toward the axis of the main screw shaft b as shown in FIG. The contact portion A between the surface and the upper part of the inner screw of the auxiliary screw cylinder c is abutted at an angle θ. Therefore, the striking force F becomes two component forces m and n, and the component force n has an extremely large effect on the rupture of the auxiliary screw.
【０００６】[0006]
本考案の課題は、前記従来技術の欠点を除去することにある。 The problem of the present invention is to eliminate the disadvantages of the prior art.
【０００７】[0007]
本考案の手段は次のとおりである。 The means of the present invention are as follows.
【０００８】 中央凹部にスラスト軸受を設けたベッド上にケース本体を取付け、スラスト軸 受上に大傘歯車を載せ、外周にねじを形成し上端部にストッパを設けた主ねじ軸 を前記大傘歯車の中心に直立して設け、大傘歯車に、ケース本体に取付け、外部 からの駆動で回転する小傘歯車を噛み合せ、大傘歯車を介して回転する主ねじ軸 のねじと噛み合う補助ねじ筒の内ねじ及び補助ねじ筒に形成した外周ねじと噛み 合う内筒の内ねじからなるスクリュージャッキにおいて、前記補助ねじ筒の内ね じを直角面で受止めるストッパを主ねじ軸の上端に設けたことを特徴とするスク リュージャッキ。[0008] The case main body is mounted on a bed provided with a thrust bearing in a central concave portion, a large bevel gear is placed on the thrust bearing, a screw is formed on the outer periphery, and a main screw shaft provided with a stopper at an upper end is provided with the large umbrella. An auxiliary screw cylinder that is provided upright at the center of the gear, engages with the large bevel gear, attaches to the case body, meshes with the small bevel gear that rotates by driving from the outside, and meshes with the screw of the main screw shaft that rotates through the large bevel gear. In the screw jack composed of the inner screw of the inner screw and the inner screw of the inner screw that meshes with the outer screw formed on the auxiliary screw cylinder, a stopper is provided at the upper end of the main screw shaft for receiving the internal screw of the auxiliary screw cylinder at a right angle. A screw jack characterized in that:
【０００９】[0009]
１はジャッキケース本体で、アルミ又はＦＣ鋳造或いは鋼板等によりなるケー ス１ａと、ケース１ａの上端に設けた筒体１ｂを溶接等で一体化構造として成形 してある。２は、鋼材等によりほぼ方形に成形したベッドで中央部は凹部２ａに なっており、凹部２ａの底面はベッド２を接地面Ｗと同一面となるようにしてあ る。またベッド２上にケース本体１のケース１ａに突設した取付け片１ｃを載せ リベットでベッド２上に取付ける。 Reference numeral 1 denotes a jack case body, which is formed by welding or the like into a case 1a made of aluminum, FC casting, steel plate, or the like, and a cylindrical body 1b provided at the upper end of the case 1a. Reference numeral 2 denotes a bed formed in a substantially rectangular shape from a steel material or the like, and has a concave portion 2a at the center, and the bottom surface of the concave portion 2a is such that the bed 2 is flush with the grounding surface W. The mounting piece 1c protruding from the case 1a of the case body 1 is placed on the bed 2 and mounted on the bed 2 with rivets.
【００１０】 ベッド２の中央凹部２ａ上にはスラスト軸受３を設けると共に、このスラスト 軸受３上に、外周にねじ４ａを形成した主ねじ軸４の下端をノックにより固定し て直立縦設した大傘歯車５をその上に載せる。大傘歯車５の中心を結び傾斜線上 の前記ケース１ａに溶接で軸受部ｄを一体に固定し軸受部１ｄで受支した軸６ａ の小傘歯車６を噛み合わせる。小傘歯車６の軸６ａの端部に取付けたハンドル継 手７を経て外部から小傘歯車６を介して大傘歯車５を回転させる。A large thrust bearing 3 is provided on the central recess 2 a of the bed 2, and the lower end of a main screw shaft 4 having a screw 4 a formed on the outer periphery is fixed on the thrust bearing 3 by being knocked upright. The bevel gear 5 is mounted thereon. The bearing portion d is integrally fixed to the case 1a on the inclined line by welding and connecting the center of the large bevel gear 5, and the small bevel gear 6 of the shaft 6a supported by the bearing portion 1d is engaged. The large bevel gear 5 is rotated from the outside via the small bevel gear 6 via the handle joint 7 attached to the end of the shaft 6a of the small bevel gear 6.
【００１１】 主ねじ軸４の上端側にストッパピンＰを設け、外周ねじ４ａに、内側の下部に 形成したねじ８ａと、外周にねじ８ｂを設けた補助ねじ筒８の前記下部側の内ね じ８ａを噛み合わせ、外周ねじ８ｂは、下部側の内側にねじ９ａを設けて、外周 に条溝９ｂを縦設した内筒９の内ねじ９ａを噛み合わせ、条溝９ｂに、ケース本 体１の筒体１ｂに摺嵌した外筒１０の上部側に内側に向けて打出した係合部１０ ａを嵌め、内筒９の昇降時の回転を防ぐと共に、係合部１０ａによって内筒９を 案内すると共に内筒９の抜出しを防ぐ。また、外筒１０の外周に下部を残して条 溝１０ｂを縦設し、本体１にある筒体１ｂの上部に設けた内筒９に向けて打出し た係合片１ｅを図５に示すように条溝１０に嵌めて外筒１０の案内とすると共に 抜け出しを防ぐストッパとし、内筒９の上端に、被扛重体例えば自動車等を載せ た時に受ける受金１１を回転可能に嵌着させ、ストッパーを補助ねじ筒８の内ね じ８ａの破損を防ぐために図４ａに示すようにストッパピンＰの突き当り面を主 ねじ軸４の中心軸線と平行となるように打込み、または溶接して切削加工を施す 。A stopper pin P is provided on the upper end side of the main screw shaft 4, and a screw 8 a formed on the inner lower part and a screw 8 b formed on the outer circumference are provided on the outer peripheral screw 4 a. The outer screw 8b is provided with a screw 9a on the inner side on the lower side, and the inner screw 9a of the inner cylinder 9 having a vertical groove 9b provided on the outer circumference is engaged with the outer screw 8b. An engagement portion 10a protruded inward is fitted on the upper side of the outer cylinder 10 slidingly fitted to the first cylinder 1b to prevent rotation of the inner cylinder 9 when ascending and descending. To prevent the inner cylinder 9 from being pulled out. FIG. 5 shows an engagement piece 1e in which a groove 10b is provided vertically on the outer periphery of the outer cylinder 10 while leaving a lower portion, and is projected toward the inner cylinder 9 provided on the upper part of the cylinder 1b of the main body 1. As described above, the outer cylinder 10 is fitted into the groove 10 to serve as a guide and a stopper for preventing the outer cylinder 10 from coming off. A receiving member 11 received when a body to be lifted, such as an automobile, is placed on the upper end of the inner cylinder 9 is rotatably fitted. In order to prevent damage to the internal screw 8a of the auxiliary screw cylinder 8, the stopper is driven or welded so that the abutting surface of the stopper pin P is parallel to the center axis of the main screw shaft 4, as shown in FIG. Apply processing.
【００１２】 尚他の実施例として図４ｂに示すように主ねじ軸４の上端にストッパピンＰに 代えてフランジＦを設けて、補助ねじ筒内ねじ８ａの上端を受止めるようにして もよい。As another embodiment, as shown in FIG. 4B, a flange F may be provided at the upper end of the main screw shaft 4 instead of the stopper pin P so as to receive the upper end of the auxiliary screw internal screw 8a. .
【００１３】[0013]
本考案は上述のように主ねじ軸上端に設けたストッパが補助ねじ筒の内ねじ上 端の破損を防ぐように、ストッパ当り面と補助ねじ筒の内ねじ山切上部との当り 部は角度を有しないで直角に当る。従って当り力は分力を生じない形状となり、 ストッパの破損を防止でき、補助ねじ筒に設けた内ねじ破損等による事故を防止 できる。 In the present invention, the contact between the stopper contact surface and the inner thread cut upper part of the auxiliary screw cylinder is angled so that the stopper provided at the upper end of the main screw shaft prevents the upper end of the inner screw of the auxiliary screw cylinder as described above. Hit at right angles without having Accordingly, the contact force has a shape that does not generate a component force, the stopper can be prevented from being damaged, and an accident due to breakage of the internal screw provided in the auxiliary screw cylinder can be prevented.
【図１】本考案によるスクリュージャッキの使用前の縦
断正面図である。FIG. 1 is a longitudinal sectional front view of a screw jack according to the present invention before use.
【図２】図１の状態から使用する時主ねじ軸の外周ねじ
に噛合う補助ねじ筒が主ねじ軸の上端に設けたストッパ
に当るまで上昇させた時の縦断正面図である。FIG. 2 is a longitudinal sectional front view when the auxiliary screw cylinder meshing with the outer peripheral thread of the main screw shaft is raised up to a stopper provided at the upper end of the main screw shaft when used from the state of FIG.
【図３】スクリュージャッキが更に上昇させた時の縦断
正面図である。FIG. 3 is a longitudinal sectional front view when the screw jack is further raised.
【図４】主ねじ軸の上端に設けたストッパと補助ねじ筒
内ねじの当り面を示した平面図４ａはストッパピンを受
け止めるようにしたもので、４ｂはフランジによって受
止めるものである。FIG. 4A is a plan view showing a stopper provided at the upper end of a main screw shaft and a contact surface of an auxiliary screw in-cylinder screw. A stopper pin is received, and 4b is received by a flange.
【図５】主ねじ軸とストッパの従来の当り面の状態を示
した平面図である。FIG. 5 is a plan view showing a state of a conventional contact surface between a main screw shaft and a stopper.
１ ケース本体 １ａ ケース １ｂ 筒体 １ｃ フランジ １ｄ 軸受 １ｅ 係止片 ２ ベッド ２ａ 凹部 ３ スラスト軸受 ４ 主ねじ軸 ４ａ ねじ ５ 大傘歯車 ６ 小傘歯車 ６ａ 軸 ７ ハンドル継手 ８ 補助ねじ筒 ８ａ、９ａ 内ねじ ８ｂ 外周ねじ ９ 内筒 ９ｂ、１０ｂ溝 １０ 外筒 １０ａ 係合部 １１ 受金 Ｐ ストッパピン Ｆ フランジ DESCRIPTION OF SYMBOLS 1 Case main body 1a Case 1b Cylindrical body 1c Flange 1d Bearing 1e Locking piece 2 Bed 2a Depression 3 Thrust bearing 4 Main screw shaft 4a Screw 5 Large bevel gear 6 Small bevel gear 6a Shaft 7 Handle joint 8 Auxiliary screw cylinder 8a, 9a Screw 8b Outer thread 9 Inner cylinder 9b, 10b groove 10 Outer cylinder 10a Engagement part 11 Receiving P Stopper pin F Flange
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成９年１０月１５日[Submission date] October 15, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【考案の名称】 スクリュージャッキ[Name of device] Screw jack
【実用新案登録請求の範囲】[Utility model registration claims]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本考案に係るスクリュージャッキの使用前の縦
断正面図。FIG. 1 is a vertical front view of a screw jack according to the present invention before use.
【図２】図１の状態から使用する時主ねじ軸の外周ねじ
に噛み合う補助ねじ筒が主ねじ軸の上端に設けたストッ
パに当るまで上昇させた時の縦断正面図。FIG. 2 is a longitudinal sectional front view when the auxiliary screw cylinder meshing with the outer peripheral screw of the main screw shaft when used from the state of FIG. 1 is raised until it hits a stopper provided at the upper end of the main screw shaft.
【図３】スクリュージャッキが更に上昇させた時の縦断
正面図。FIG. 3 is a longitudinal sectional front view when the screw jack is further raised.
【図４】主ねじ軸の上端に設けたストッパと補助ねじ筒
内ねじの当り面を示した平面図で、４ａはストッパピン
で受け止めるもの、４ｂはフランジによって受止めるも
のを示す。FIG. 4 is a plan view showing a stopper provided at an upper end of a main screw shaft and an abutting surface of an auxiliary screw in-cylinder screw; 4a shows one received by a stopper pin, and 4b shows one received by a flange.
【図５】図１の一部の拡大断面図。FIG. 5 is an enlarged sectional view of a part of FIG. 1;
【図６】主ねじ軸とストッパの従来の当り面の状態を示
す平面図。FIG. 6 is a plan view showing a state of a conventional contact surface between a main screw shaft and a stopper.
【符号の説明】 １ ケース本体 １ａ ケース １ｂ 筒体 １ｃ フランジ １ｄ 軸受 １ｅ 係止片 ２ ベッド ２ａ 凹部 ３ スラスト軸受 ４ 主ねじ軸 ４ａ ねじ ５ 大傘歯車 ６ 小傘歯車 ６ａ 軸 ７ ハンドル継手 ８ 補助ねじ筒 ８ａ、９ａ 内ねじ ８ｂ 外周ねじ ９ 内筒 ９ｂ、１０ｂ溝 １０ 外筒 １０ａ 係合部 １１ 受金 Ｐ ストッパピン Ｆ フランジ[Description of Signs] 1 Case body 1a Case 1b Cylindrical body 1c Flange 1d Bearing 1e Locking piece 2 Bed 2a Depression 3 Thrust bearing 4 Main screw shaft 4a Screw 5 Large bevel gear 6 Small bevel gear 6a Shaft 7 Handle joint 8 Auxiliary screw Tube 8a, 9a Inner screw 8b Outer screw 9 Inner tube 9b, 10b groove 10 Outer tube 10a Engagement part 11 Receptacle P Stopper pin F Flange
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図５[Correction target item name] Fig. 5
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図５】 FIG. 5
【手続補正３】[Procedure amendment 3]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図６[Correction target item name] Fig. 6
【補正方法】追加[Correction method] Added
【補正内容】[Correction contents]
【図６】 FIG. 6
Claims (2)
上にケース本体を取付け、前記スラスト軸受上には外周
にねじを螺設し上端部にストッパを設けた主ねじ軸を直
立させて設けた大傘歯車を設け、更に大傘歯車には、ケ
ース本体の外部からの駆動で回転させる小傘歯車を噛合
せて、大傘歯車を介して回転する主ねじ軸と噛合う補助
ねじ筒の内ねじ及び補助ねじ筒の外周に螺設したねじと
噛合う内筒の内ねじからなるスクリュージャッキにおい
て、前記主ねじ軸の上端に設けたストッパは、前記補助
ねじ筒の内側ねじを直角面で受止めるようにした事を特
徴としたスクリュージャッキ。1. A case body is mounted on a bed provided with a thrust bearing in a central recess, and a main screw shaft provided with a screw on an outer periphery and a stopper on an upper end is provided upright on the thrust bearing. A large bevel gear is provided, and the large bevel gear is meshed with a small bevel gear that is rotated by driving from the outside of the case body, and an auxiliary screw cylinder that meshes with a main screw shaft that rotates through the large bevel gear. In a screw jack comprising an inner screw of an inner cylinder meshing with a screw threaded on the outer periphery of the screw and the auxiliary screw cylinder, a stopper provided at an upper end of the main screw shaft receives the inner screw of the auxiliary screw cylinder in a right angle plane. A screw jack characterized by being stopped.
じ軸には上端にフランジを設けて、このフランジで、補
助ねじ筒の内側ねじの上端を受止めるようにしたことを
特徴としたスクリュージャッキ。2. The screw jack according to claim 1, wherein a flange is provided on an upper end of the main screw shaft, and the flange receives an upper end of an inner screw of the auxiliary screw cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997006313U JP3046162U (en) | 1997-07-18 | 1997-07-18 | Screw jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997006313U JP3046162U (en) | 1997-07-18 | 1997-07-18 | Screw jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3046162U true JP3046162U (en) | 1998-02-24 |
Family
ID=43180516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1997006313U Expired - Lifetime JP3046162U (en) | 1997-07-18 | 1997-07-18 | Screw jack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3046162U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016147725A (en) * | 2015-02-10 | 2016-08-18 | 川▲崎▼工業株式会社 | Screw jack |
| JP2020070177A (en) * | 2018-11-01 | 2020-05-07 | 株式会社青山製作所 | Screw jack |
-
1997
- 1997-07-18 JP JP1997006313U patent/JP3046162U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016147725A (en) * | 2015-02-10 | 2016-08-18 | 川▲崎▼工業株式会社 | Screw jack |
| JP2020070177A (en) * | 2018-11-01 | 2020-05-07 | 株式会社青山製作所 | Screw jack |
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