JPH065358Y2 - Lifting device safety mechanism - Google Patents
Lifting device safety mechanismInfo
- Publication number
- JPH065358Y2 JPH065358Y2 JP1988153672U JP15367288U JPH065358Y2 JP H065358 Y2 JPH065358 Y2 JP H065358Y2 JP 1988153672 U JP1988153672 U JP 1988153672U JP 15367288 U JP15367288 U JP 15367288U JP H065358 Y2 JPH065358 Y2 JP H065358Y2
- Authority
- JP
- Japan
- Prior art keywords
- rack
- lock arm
- hook
- safety mechanism
- locking claw
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Emergency Lowering Means (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Control Of Presses (AREA)
Description
【考案の詳細な説明】 イ産業上の利用分野 本考案は、ジャッキ、テーブルリフト等、ベースとテー
ブル相互間が、例えばＸ型リンクにより連結され、前記
テーブルがベースに対して常に並行状態を維持しつつ昇
降する昇降装置のリンクを、突っ張りロッドでロックし
てテーブルの落下を防止する安全機構に関する。[Detailed Description of the Invention] (a) Industrial field of application The present invention is such that a base such as a jack and a table lift is connected to each other by an X-shaped link, for example, and the table is always kept parallel to the base. The present invention relates to a safety mechanism that locks a link of an elevating device that elevates and lowers with a tension rod to prevent a table from falling.
ロ従来技術 上記安全機構としては、従来第３図示の如く、下端部に
掛止爪８′を備えた突っ張りロッド６′の上端をリンク
機構３′の適宜部位へ枢着し、その掛止爪８′をベース
１に沿って設けられたラック７′に噛み合わせる構造の
ものが知られている。(B) Prior Art As the above-mentioned safety mechanism, as shown in the third conventional example, the upper end of the strut rod 6'having a hook 8'at the lower end is pivotally attached to an appropriate portion of the link mechanism 3 ', and the hook is provided. A structure is known in which 8'is engaged with a rack 7'provided along the base 1.
ハ考案が解決しようとする課題 上記従来の安全機構は、テーブルを下降させる場合、突
っ張りロッドを手で持ち上げることにより係止爪をラッ
クから外してロック解除状態と成し、再度上昇させる場
合は、そのようにして解除した係止爪をいちいち噛み合
い可能となるようにリセットしなければならない。よっ
て掛け忘れる虞れがあり、たとえばそれば人為的であろ
うと１００％の安全性は望めなかった。(C) Problems to be solved by the invention In the conventional safety mechanism described above, when lowering the table, the locking claws are removed from the rack by lifting the tension rod by hand, the lock is released, and when the table is raised again, The locking pawls thus released must be reset so that they can be engaged one by one. Therefore, there is a risk of forgetting to call it, and even if it is artificial, 100% safety could not be expected.
ニ課題を解決するための手段 本考案は、テーブル下降作動に連動して自動的に安全機
構をリセットし、掛け忘れの虞れを無くすと共に、ロッ
ク解除操作が簡易に行なえるようにしたもので、その構
成は、突っ張りロッドを、進退ロッドがガイド体の先端
長手延長上へ突出自在に支持されるよう形成してその進
退ロッドの上縁に沿ってラックを設け、一方ガイド体の
上縁へ、先端に前記ラックの歯と噛み合う係止爪を備え
たロックアームを、シーソー運動可能に枢着し、且つそ
のロックアームの後端部位に掛止して前記係止片爪をラ
ックから外した状態に維持するフックを設け、更にテー
ブル下部の適宜部位へそのテーブルの下降時に、前記ロ
ックアームの先端をラック側へ押し付けてフックとの係
止を解く押圧体を設けたことにある。D) Means for solving the problems The present invention is designed to automatically reset the safety mechanism in conjunction with the table lowering operation, eliminating the risk of forgetting to hang it and enabling the unlocking operation to be performed easily. , The structure is such that the tension rod is formed so that the advancing / retreating rod is supported so as to project on the longitudinal extension of the distal end of the guide body, and the rack is provided along the upper edge of the advancing / retreating rod. , A lock arm having a locking claw that meshes with the teeth of the rack at its tip is pivotally mounted so that the seesaw can move, and the locking arm is hooked to the rear end portion of the lock arm to remove the locking claw from the rack. A hook for maintaining the state is provided, and further, a pressing body for releasing the engagement with the hook by pushing the tip of the lock arm to the rack side when the table is lowered to an appropriate portion under the table is provided.
ホ作用 テーブルを下降させる場合は、ロックアームの後端をガ
イド体側へ押し付けてロックを外すと共に、ロックアー
ムの後端部位をフックへ掛止させてロックを外した状態
にする。そしてテーブルを下降作動させ、そのテーブル
が最下降位置に到達すると、ロックアームの先端が押圧
体によりラック側へ押し付けられてロックアームの後端
はフックから外れ、係止可能な体勢にリセットされる。(E) When lowering the table, the rear end of the lock arm is pushed toward the guide body to release the lock, and the rear end portion of the lock arm is hooked on the hook to release the lock. Then, when the table is lowered, and when the table reaches the lowest position, the tip of the lock arm is pressed toward the rack by the pressing body, the rear end of the lock arm is disengaged from the hook, and the lockable posture is reset. .
ヘ実施例 図面は本考案に係る昇降装置の安全機構を、ジャッキに
おいて実施した一例を示したもので、１は方形に枠組み
されたベースであり、２はテーブルである。ベース１と
テーブル２との相互間には、Ｘ型リンク機構３が、左右
いずれかの側における端部を、夫々ベース１とテーブル
２の端部へ枢着し、他の側における端部が夫々ベース１
とテーブル２の各面に沿ってローラ４，４′を介し摺動
可能に当接されている。又Ｘ型リンク機構３のリンク３
ａ，３ｂ相互間は、摺動側同士がシリンダ５で連結され
ていて、そのシリンダ５の伸縮操作でＸ型リンク機構３
は開閉運動する。又枢着側は、リンク３ａ，３ｂ相互間
が突っ張りロッド６により連結され、その突っ張りロッ
ド６は、進退ロッド６ａが、ガイド筒６ｂ内へ、そのガ
イド筒６ｂ先端長手延長上へ突出自在に収容されてい
る。そして前記進退ロッド６ａの上面にはラック７が刻
設され、一方ガイド体であるガイド筒６ｂの上縁には、
先端に前記ラック７の歯と噛み合う係止爪８を備えたロ
ックアーム９がシーソー運動可能に枢着され、更に先端
の係止爪８が前記ラック７と係合する側へバネ力が与え
られ、且つそのロックアーム９の後端部位を引き寄せ掛
止して前記係止片爪８をラック７から話した状態に維持
するフック１０がを設けられている。そして前記ラック
７は、係止爪８に対して縮小作動時のみに係止ロックさ
れるようになっている。更にテーブル２の下部にあたる
Ｘ型リンク３の適宜部位には、そのテーブル２が最下降
位置に到達したとき、前記ロックアーム９の先端に当接
し、ラック７側へ押し付けてフック１０との掛止を解く
押圧体１１が取り付けられている。F. Embodiments The drawings show an example in which the safety mechanism of the lifting device according to the present invention is implemented in a jack, where 1 is a base framed in a rectangular shape and 2 is a table. Between the base 1 and the table 2, the X-shaped link mechanism 3 pivotally connects the ends on either the left or right side to the ends of the base 1 and the table 2, respectively. Each base 1
And are slidably abutted along the respective surfaces of the table 2 via rollers 4 and 4 '. Also, the link 3 of the X-type link mechanism 3
The sliding sides of a and 3b are connected to each other by a cylinder 5, and the X-type link mechanism 3 can be operated by expanding and contracting the cylinder 5.
Opens and closes. On the pivot side, the links 3a and 3b are connected to each other by a tension rod 6, and the tension rod 6 accommodates the advancing / retreating rod 6a so as to project into the guide cylinder 6b and on the longitudinal extension of the guide cylinder 6b. Has been done. A rack 7 is engraved on the upper surface of the advancing / retreating rod 6a, and on the other hand, on the upper edge of the guide cylinder 6b which is a guide body,
A lock arm 9 having a locking claw 8 that meshes with the teeth of the rack 7 is pivotally mounted at the distal end so as to allow seesaw movement, and a spring force is applied to the side where the locking claw 8 at the distal end engages with the rack 7. Further, there is provided a hook 10 that pulls the rear end portion of the lock arm 9 and hooks the lock arm 9 to hold the locking piece claw 8 in a state of talking from the rack 7. The rack 7 is locked and locked with respect to the locking claw 8 only when the reduction operation is performed. Further, when the table 2 reaches the most lowered position, it contacts the tip of the lock arm 9 and presses it to the rack 7 side to engage with the hook 10 at an appropriate portion of the X-shaped link 3 which is the lower part of the table 2. A pressing body 11 for unraveling is attached.
このように形成されたジャッキは、シリンダ５の伸び作
動でテーブル２が上昇し、それにつれて進退ロッド６ａ
がガイド筒６ｂから徐々に伸び出し、係止爪８はラック
７の山部で押し上げられて隣接した谷部に落ち込むとい
った作動を繰り代えす。そしてテーブル２が作業する所
定の高さに到達してシリンダ５を停止させた時点で、前
記係止爪８がラック７の谷部に嵌まり込んでいると突っ
張りロッド６は縮小できなくなって、Ｘ型リンク３には
ロックが掛る。万一係止爪８が山部にあればロックされ
てはいないが、下降作動すればいずれロック状態になっ
てその下降作動は阻止される。In the jack thus formed, the table 2 is lifted by the extension operation of the cylinder 5 and the advancing / retreating rod 6a is moved accordingly.
Gradually extends from the guide tube 6b, and the locking claw 8 is pushed up by the mountain portion of the rack 7 and falls into the adjacent valley portion, and the operation is repeated. Then, when the table 5 reaches a predetermined working height and the cylinder 5 is stopped, if the locking claws 8 are fitted in the troughs of the rack 7, the tension rod 6 cannot be reduced, The X-shaped link 3 is locked. If the locking claw 8 is in the mountain portion, it is not locked, but if it is lowered, it will eventually be in a locked state and the lowering operation will be blocked.
作業終了後、テーブル２を下降させる場合は、ロックア
ーム９の後端部をガイド筒６ｂ側へ押し付けると、先端
の係止爪８がラック７より外れてロックが解かれ、ロッ
クアーム９の後端部位をそのままフック１０へ掛止させ
ておいて、シリンダ５の縮小操作でテーブル２を下降作
動させる。テーブル２が最下降位置に到達すると、ロッ
クアーム９の先端が押圧体１１によりラック７側へ押し
付けられてロックアーム９の後端がフック１０から外
れ、自動的に係止可能な体勢にリセットされて次にテー
ブルを上昇させた場合、落下防止の機構が働く。When the table 2 is to be lowered after the work is completed, when the rear end of the lock arm 9 is pressed against the guide cylinder 6b side, the locking claw 8 at the front end is disengaged from the rack 7 and the lock is released. The end portion is hooked on the hook 10 as it is, and the table 2 is lowered by the contraction operation of the cylinder 5. When the table 2 reaches the lowest position, the tip of the lock arm 9 is pressed against the rack 7 side by the pressing body 11, the rear end of the lock arm 9 is disengaged from the hook 10, and the posture is automatically reset so that it can be locked. Then, when the table is lifted next time, the fall prevention mechanism works.
尚実施例の突っ張りロッドは、ガイド筒内へ進退ロッド
が収容されるようになったものを説明したが、ガイド体
は筒状に限定するものでなく、そのガイド体の延長上へ
進退ロッドが突出可能に支持できるものであれば、断面
コ状の鋼材を組み合わせたものでもよい。又突っ張りロ
ッドは、リンク同士を連結させるばかりでなく、ベー
ス、リンク、テーブルのいずれかを連結してＸ型リンク
がロックできるものであればどのように設けても差し支
えない。In addition, the tension rod of the embodiment has been described in which the advancing / retreating rod is housed in the guide cylinder, but the guide body is not limited to the cylindrical shape, and the advancing / retreating rod is extended to the extension of the guide body. A combination of steel materials having a U-shaped cross section may be used as long as it can be supported so as to project. Further, the strut rod may be provided not only for connecting the links to each other, but also for connecting the base, the link, or the table so long as the X-type link can be locked.
ト効果 本考案によれば、ロックの解除はロックアームの後端を
押し付けてそのロックアームの後端部をフックに掛止さ
せるだけのワンタッチ操作で行なえ、テーブルを下降さ
せればあとは自動的にリセットされるので、操作が簡単
であると共に、安全装置の掛け忘れがなく１００％安全
である。According to the present invention, the lock can be released by a one-touch operation of pressing the rear end of the lock arm and hooking the rear end of the lock arm to the hook. Since it is reset to, it is easy to operate and 100% safe without forgetting to put on the safety device.
第１図は本考案に係る安全機構を備えたジャッキを示す
説明図、第２図ａ〜ｃは安全機構の作動説明図、第３図
は従来例の説明図である。 １……ベース、２……テーブル、３……Ｘ型リンク機
構、３′……リンク機構、３ａ，３ｂ……リンク、４，
４′……ローラ、５……シリンダ、６，６′……突っ張
りロッド、６ａ……進退ロッド、６ｂ……ガイド筒、
７，７′……ラック、８，８′……係止爪、９……ロッ
クアーム、１０……フック、１１……押圧体、FIG. 1 is an explanatory view showing a jack provided with a safety mechanism according to the present invention, FIGS. 2a to 2c are operational explanatory views of the safety mechanism, and FIG. 3 is an explanatory view of a conventional example. 1 ... Base, 2 ... Table, 3 ... X-type link mechanism, 3 '... Link mechanism, 3a, 3b ... Link, 4,
4 '... roller, 5 ... cylinder, 6, 6' ... tension rod, 6a ... advance / retreat rod, 6b ... guide tube,
7, 7 '... rack, 8, 8' ... locking claw, 9 ... lock arm, 10 ... hook, 11 ... pressing body,
Claims (1)
テーブルがベースに対して常に並行状態を維持しつつ昇
降する昇降装置のリンク部を突っ張りロッドでロックし
てテーブルの落下を防止する安全機構において、前記突
っ張りロッドを、進退ロッドがガイド体の先端長手延長
上へ突出自在に支持されるよう形成してその進退ロッド
の上縁に沿ってラックを設け、一方ガイド体の上縁へ、
先端に前記ラックの歯と噛み合う係止爪を備えたロック
アームを、シーソー運動可能に枢着し、且つそのロック
アームの後端部位を掛止して前記係止片爪をラックから
外した状態に維持するフックを設け、更にテーブル下部
の適宜部位へそのテーブルの下降時に、前記ロックアー
ムの先端をラック側へ押し付けてフックとの係止を解く
押圧体を設けて成る昇降装置の安全機構。1. A link connection between a base and a table,
In a safety mechanism that locks the link part of the lifting device that raises and lowers the table while always maintaining the parallel state with the base by the tension rod to prevent the table from falling, A rack is provided along the upper edge of the advancing / retreating rod formed so as to be supported so as to project upward, and on the other hand, to the upper edge of the guide body.
A state in which a lock arm having a locking claw that meshes with the teeth of the rack at its tip is pivotally mounted for seesaw movement, and the rear end portion of the lock arm is hooked to remove the locking claw from the rack. A safety mechanism for an elevating device, further comprising: a hook for maintaining the table, and a pressing body for pressing the tip of the lock arm toward the rack side to release the engagement with the hook when the table is lowered to an appropriate portion under the table.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988153672U JPH065358Y2 (en) | 1988-11-26 | 1988-11-26 | Lifting device safety mechanism |
| KR2019890003455U KR920008968Y1 (en) | 1988-11-26 | 1989-03-28 | Safety devce for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988153672U JPH065358Y2 (en) | 1988-11-26 | 1988-11-26 | Lifting device safety mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0315900U JPH0315900U (en) | 1991-02-18 |
| JPH065358Y2 true JPH065358Y2 (en) | 1994-02-09 |
Family
ID=15567649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988153672U Expired - Lifetime JPH065358Y2 (en) | 1988-11-26 | 1988-11-26 | Lifting device safety mechanism |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH065358Y2 (en) |
| KR (1) | KR920008968Y1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001089088A (en) * | 1999-09-20 | 2001-04-03 | Banzai Kogyo Kk | Support arm locking device of lift device |
| KR102142209B1 (en) * | 2019-02-14 | 2020-08-06 | 전태환 | Holder for stand of set top box and TV peripheral device |
-
1988
- 1988-11-26 JP JP1988153672U patent/JPH065358Y2/en not_active Expired - Lifetime
-
1989
- 1989-03-28 KR KR2019890003455U patent/KR920008968Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900010138U (en) | 1990-06-02 |
| KR920008968Y1 (en) | 1992-12-26 |
| JPH0315900U (en) | 1991-02-18 |
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