JPS6338228Y2

JPS6338228Y2 -

Info

Publication number: JPS6338228Y2
Application number: JP1983060528U
Authority: JP
Priority date: 1983-04-22
Filing date: 1983-04-22
Publication date: 1988-10-07
Also published as: JPS59165893U

Description

【考案の詳細な説明】本考案は、スナツチブロツクの安全装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for a snatch block.

車にロープを掛け外しするため、一方の側枠２
の上部の開閉側枠２ａを、蝶番１１により開閉す
るスナツチブロツクにおいては、上記開閉側枠２
ａの閉じ状態を確保する安全なロツク機構を必要
とする。なお車１の側面を覆う側板３を側枠２，
２１に添設した場合は、側枠２側の側板３の上部
３ａも分離して開閉側枠２ａと一体に開閉する構
成とする。 In order to attach and remove the rope from the car, use one side frame 2.
In a snatch block in which the opening/closing side frame 2a at the upper part of the opening/closing side frame 2a is opened/closed by a hinge 11, the opening/closing side frame 2a
Requires a safe locking mechanism to ensure the closed condition of a. Note that the side plate 3 that covers the side of the car 1 is the side frame 2,
21, the upper part 3a of the side plate 3 on the side frame 2 side is also separated and opened and closed integrally with the opening/closing side frame 2a.

従来のロツク片を回動させて相手片に掛脱させ
る構成（例実公昭32−6546号・同昭36−447号公
報）のロツク機構は、作業現場において隣接ロー
プ等が該ロツク片に接触してロツクを解除して事
故を起すおそれがある。 Conventional locking mechanisms in which a lock piece is rotated to engage and detach from a mating piece (for example, Publication No. 32-6546 and Publication No. 36-447) do not allow adjacent ropes, etc. to come into contact with the lock piece at the work site. Otherwise, the lock may be released and an accident may occur.

そこでロツクピンをコインばねに抗して押し下
げて掛脱する構成（例実公昭36−3245号・同昭29
−5030号公報）のものが提案されている。 Therefore, the locking pin is pushed down against the coin spring to engage and release (Example Publication No. 36-3245, No. 29 of the same year)
-5030 Publication) has been proposed.

ところが近来非常に小形の例えば車１の直径５
cm以下のスナツチブロツクの需要が増大してき
た。当然その大きさに適合するロツク機構となる
が工作が面倒でコスト高となる。また作業手袋を
して、しかも冬期手段が凍えて感覚が鈍いとき、
ロツクピンを一定の距離押し込む操作は中中うま
くいかない。 However, in recent years, cars have become very small, for example, the diameter of car 1 is 5.
Demand for snatch blocks smaller than cm has been increasing. Naturally, a locking mechanism that fits the size would be required, but the work would be troublesome and the cost would be high. Also, when you are wearing work gloves and your senses are dull due to freezing in the winter,
The operation of pushing the lock pin a certain distance does not work all the time.

本考案は上記の実状に鑑み、構造および掛脱の
簡単なロツク機構を提供することを目的とする。 In view of the above-mentioned circumstances, it is an object of the present invention to provide a locking mechanism that is simple in structure and easy to engage and disengage.

図面に示す実施例について説明すると、４は両
側枠２，２１の上部間を連結する上枠で、図示の
ように別体に作つたものを両側枠間に渡し、また
は一方の側枠２１を直角に折曲げて形成する。５
はその上枠４に回り得るように取付けた掛具で図
示のフツクまたはオフである。 To explain the embodiment shown in the drawings, reference numeral 4 denotes an upper frame that connects the upper parts of both side frames 2 and 21. As shown in the figure, a separately made frame can be passed between the two side frames, or one side frame 21 can be passed between the two side frames. Form by bending at right angles. 5
is a hook attached to the upper frame 4 so that it can be rotated, and is a hook or off as shown in the figure.

本考案は、前記の上枠４に設けた掛合用の突出
部４ａに対応して掛合穴６を開閉側枠２ａに設
け、その突出部４ａを掛合穴６に挿入して開閉側
枠２ａを閉じたとき、開閉側枠２ａより外方に出
た突出部４ａの部分に、上部が大径の段孔７を設
ける。 In the present invention, a hooking hole 6 is provided in the opening/closing side frame 2a corresponding to the hooking protrusion 4a provided on the upper frame 4, and the protruding portion 4a is inserted into the hooking hole 6 to open/close the opening/closing side frame 2a. A stepped hole 7 having a large diameter at the top is provided in a portion of the protruding portion 4a that protrudes outward from the opening/closing side frame 2a when closed.

上部の急斜面部８a₁と下部の緩斜面部８a₂とを
有する截頭円錐形の頭部８ａと細軸部とから成る
ロツクピン８を、前記の段孔７に嵌合し、ロツク
ピン８の頭部下面と弾孔７の段部７ａとの間にロ
ツクピン押し上げばね９を配置する。 A lock pin 8 consisting of a truncated conical head 8a having an upper steep slope part _8a1 and a lower gentle slope part _8a2 and a thin shaft part is fitted into the stepped hole 7, and the head of the lock pin 8 is inserted. A lock pin push-up spring 9 is disposed between the lower surface and the stepped portion 7a of the bullet hole 7.

上記の下部緩斜面部８a₂の上下略中間位置が掛
合穴６の上縁に合致するまでロツクピン８がばね
９に押し上げられたとき作用する抜け止め８ｂを
ロツクピン８の軸部の下端部に設け、ロツクピン
８がその頭部頂面が前記掛合穴６の上縁に合致す
るまで押し込まれ、、その軸部が係合突出部４ａ
の下面から突出したとき通り得るように、掛合穴
６の大きさを形成したスナツチブロツクの安全装
置である。 A retainer 8b is provided at the lower end of _the shaft portion of the lock pin 8, which acts when the lock pin 8 is pushed up by the spring 9 until the upper and lower middle positions of the lower gentle slope portion 8a2 match the upper edge of the engagement hole 6. , the lock pin 8 is pushed in until the top surface of its head matches the upper edge of the engagement hole 6, and its shaft portion is inserted into the engagement protrusion 4a.
This is a safety device for a snatch block in which the engaging hole 6 is sized so that it can be passed through when protruding from the underside of the snatch block.

第３図は、開閉側枠２ａを閉じた場合の状態を
示すもので、突出部４ａは掛合穴６を通つて開閉
側枠２ａの外方に突出し、ロツクピン８はストツ
パ８ｂによる止位置までばね９に押し上げられ
て、その頭部８ａの下部緩斜面部８a₂に掛合穴６
の上外縁６ｂが当接して開閉側枠２ａの開き止め
ロツクをしている。その下部緩斜面部８a₂をその
斜面角度を小さくして円筒に近く形成することに
よつて、車１に掛けたロープの振動程度ではロツ
クは外れることはない。 FIG. 3 shows the state when the opening/closing side frame 2a is closed, in which the protrusion 4a projects outward from the opening/closing side frame 2a through the engagement hole 6, and the lock pin 8 springs to the stop position by the stopper 8b. 9, and a hooking hole 6 is formed in the lower gentle slope part 8a ₂ of the head 8a.
The upper outer edge 6b of the opening/closing side frame 2a comes into contact with the opening/closing side frame 2a to prevent it from opening. By forming the lower gently sloped portion _8a2 to have a small slope angle so as to be nearly cylindrical, the lock will not come off even if the vibration of the rope hanging on the car 1 occurs.

開閉側枠２ａの上縁に四指を掛けて開くとき、
親指の先でロツクピン８の頭部８ａを、その上部
急斜面部８a₁の下端が穴６の上外縁６ｂに達する
位まで押し下げると、急斜面部８a₁を該穴上外縁
６ｂが押し、ロツクピン８をばね９に抗してその
頭部８ａの頂面が、突出部４ａの上面と一致する
まで押し下げながら、開閉側枠２ａは鎖線示のよ
うに開かれる。この開き動作に当りロツクピンの
軸部が、突出部４ａの下に出ても支障ないよう
に、穴９の大きさを形成する。 When opening by hooking your four fingers on the upper edge of the opening/closing side frame 2a,
When the head 8a of the lock pin 8 is pushed down with the tip of the thumb until the lower end of the upper steeply sloped part _8a1 reaches the upper outer edge 6b of the hole 6, the upper outer edge 6b of the hole presses the steeply sloped part _8a1 , and the lock pin 8 is pushed down. The opening/closing side frame 2a is opened as shown by the chain line while being pushed down against the spring 9 until the top surface of the head 8a coincides with the top surface of the protrusion 4a. The hole 9 is sized so that there is no problem even if the shaft of the lock pin comes out below the protrusion 4a during this opening operation.

開閉側枠２ａを矢印Ｑの方向に閉じる場合は、
掛合穴６の上内縁６ａがばね９で突出しているロ
ツクピン８を、その頭部斜面部８a₁，８a₂に作用
して押し込みながら第３図の状態に閉じ、ロツク
ピン８はばね９で押し上げられて開閉側枠２ａを
ロツクする。即ち閉じ動作の場合は、ロツクピン
８を指で押し下げる必要がなく、自動的にロツク
される。 When closing the opening/closing side frame 2a in the direction of arrow Q,
The upper inner edge 6a of the engagement hole 6 is pushed by the spring 9 into the protruding lock pin 8 by acting on the sloped head portions 8a ₁ and 8a ₂ and closed to the state shown in FIG. 3, and the lock pin 8 is pushed up by the spring 9. to lock the opening/closing side frame 2a. That is, in the case of a closing operation, there is no need to press down the lock pin 8 with a finger, and the lock pin 8 is automatically locked.

なお閉じ動作初期に掛合穴６の上内縁６ａが、
なるべく上部急斜面部８a₁に当るように、穴６の
上面を第３図で右上りに形成する方がよい。これ
は掛合穴６をその上内縁６ａ側からプレスであけ
る場合にできるテーパ程度でもよい。 In addition, at the beginning of the closing operation, the upper inner edge 6a of the engaging hole 6
It is better to form the upper surface of the hole 6 upward to the right in FIG. 3 so as to hit the upper steep slope part _8a1 as much as possible. This may be a taper level formed when the engaging hole 6 is opened from the upper inner edge 6a side by pressing.

本考案は、上記の構成であるから、開閉側枠２
ａを開くためその上縁に四指を掛けると、親指が
自然にロツクピンを押す状態位置となるので、無
意識のうちにロツク解除の始動動作が行われる。
閉じ動作にはロツクピンには手を触れる必要がな
い。従つて前記の従来例のように開閉両方共細い
部材を指先で操作する必要がないので、冬期手指
感覚の鈍いときでも容易にロツクの掛脱が行わ
れ、前記の小形のスナツチブロツクの安全装置と
して特に適切である。 Since the present invention has the above configuration, the opening/closing side frame 2
When one puts his or her four fingers on the upper edge of a to open it, the thumb naturally moves to the position where it presses the lock pin, and the unlocking action is unconsciously performed.
There is no need to touch the locking pin for the closing operation. Therefore, there is no need to operate a thin member with the fingertips for both opening and closing as in the conventional example, so the lock can be easily engaged and disengaged even when the senses in the fingers are dull in winter, making it particularly useful as a safety device for the above-mentioned small-sized snatch block. Appropriate.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案を施したスナツチブロツクの正
面図、第２図はその側面図、第３図は要部の拡大
縦断面図。１は車、２，２１は側枠、２ａは開閉側枠、４
は上枠、４ａは上枠の掛合突出部、６は開閉側枠
に設けた掛合穴、８はロツクピン、８ａは頭部、
８a₁，８a₂は斜面周側面、８ｂは抜け止め、９は
ばね、１１は蝶番。 Fig. 1 is a front view of a snatch block according to the present invention, Fig. 2 is a side view thereof, and Fig. 3 is an enlarged vertical sectional view of the main parts. 1 is a car, 2 and 21 are side frames, 2a is an opening/closing side frame, 4
is the upper frame, 4a is the engaging protrusion of the upper frame, 6 is the engaging hole provided in the opening/closing side frame, 8 is the lock pin, 8a is the head,
8a ₁ and 8a ₂ are the peripheral surfaces of the slope, 8b is a retainer, 9 is a spring, and 11 is a hinge.

Claims

【実用新案登録請求の範囲】車を挾んで軸支した側枠の一方を下部主側枠と
上部開閉側枠とに分離して開閉自在に蝶番で連結
し、他方の側枠と一体的に上枠を開閉側枠に向つ
て形成し、該上枠と開閉側枠との間にロツク機構
を備えたスナツチブロツクにおいて、上枠に設けた掛合用の突出部に対応して掛合穴
を開閉側枠に設け、その突出部を掛合穴に挿入して開閉側枠を閉じ
たとき、開閉側枠より外方に出た突出部の部分
に、上部が大径の段孔を設け、上部の急斜面部と下部の緩斜面部とを有する截
頭円錐形の頭部と細軸部とから成るロツクピン
を、前記の段孔に嵌合し、ロツクピンの頭部下面と段孔の段部との間にロ
ツクピン押し上げばねを配置し、上記の下部緩斜面部の上下略中間位置が掛合穴
の上縁に合致するまでロツクピンがばねに押し上
げられたとき作用する抜け止めをロツクピンの軸
部の下端部に設け、ロツクピンがその頭部頂面が前記掛合穴の上縁
に合致するまで押し込まれ、その軸部が係合突出
部の下面から突出したとき通り得るように、掛合
穴の大きさを形成したスナツチブロツクの安全装
置。[Scope of claim for utility model registration] One of the side frames that pivotally supports the car is separated into a lower main side frame and an upper opening/closing side frame, which are connected with a hinge so that they can be opened and closed, and integrated with the other side frame. In a snatch block in which an upper frame is formed toward the opening/closing side frame and a locking mechanism is provided between the upper frame and the opening/closing side frame, the engaging hole is formed on the opening/closing side in correspondence with the engaging protrusion provided on the upper frame. Provided on the frame, when the protruding part is inserted into the engagement hole and the opening/closing side frame is closed, a step hole with a large diameter at the top is provided in the part of the protruding part that protrudes outward from the opening/closing side frame, and the steep slope of the upper part is provided. A locking pin consisting of a truncated conical head and a thin shaft having a lower part and a gently sloped part is fitted into the stepped hole, and the lock pin is inserted between the lower surface of the head of the lock pin and the stepped part of the stepped hole. A spring for pushing up the lock pin is placed at the lower end of the shaft of the lock pin, and a retainer is placed at the lower end of the shaft of the lock pin, which acts when the lock pin is pushed up by the spring until the upper and lower middle positions of the lower gentle slope portion match the upper edge of the engagement hole. The engaging hole is sized so that the locking pin can be inserted into the engaging hole until the top surface of the locking pin is aligned with the upper edge of the engaging hole, and the shaft portion of the locking pin projects from the lower surface of the engaging projection. Snatch block safety device.