JPH0355758Y2 - - Google Patents
Info
- Publication number
- JPH0355758Y2 JPH0355758Y2 JP1984167298U JP16729884U JPH0355758Y2 JP H0355758 Y2 JPH0355758 Y2 JP H0355758Y2 JP 1984167298 U JP1984167298 U JP 1984167298U JP 16729884 U JP16729884 U JP 16729884U JP H0355758 Y2 JPH0355758 Y2 JP H0355758Y2
- Authority
- JP
- Japan
- Prior art keywords
- latch
- diameter portion
- lever
- engaging
- hole
- 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
Links
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Ladders (AREA)
Description
【考案の詳細な説明】
(考案の利用分野)
本考案は、一対の脚杆をその上端部に固着した
枢着金具で枢支連結し、これらを略A状に対向掛
合することによつて所謂脚立に、これを一本の棒
状に伸展掛合することによつて梯子として使用す
る場合の掛合装置に関する。[Detailed Description of the Invention] (Field of Application of the Invention) The present invention pivots and connects a pair of leg rods with pivot fittings fixed to their upper ends, and engages them facing each other in a substantially A shape. The present invention relates to a hooking device that is used as a ladder by extending and hooking the same to a so-called stepladder in the form of a single rod.
(従来技術)
本考案に最も近似する従来技術として実開昭57
−27098号を掲げることができる。この従来技術
を第5図A及び第5図Bによつて説明すると、脚
杆の一方の脚杆(図示せず)に一端が枢着された
掛金本体15の他端部に径大部16aと径小部1
6bとからなる略ひようたん状の掛合孔16が穿
設され、他方の脚杆17に穿設された頭部付掛合
突子18が掛合孔16の径大部16aに挿入さ
れ、これに連なる径小部16bで掛合され、掛金
本体15の他端部を脚杆17に掛合するようにな
つている。そして掛合孔16の径大部16aから
主に径小部16bを覆うようにした箱状の掛合レ
バー19が枢支ピン20によつて掛合本体15に
枢着されると共に、常時はばね21によつて掛合
レバー19が掛合本体15に当接され、掛合孔1
6の大半を覆うようになつている。(Prior art) As the prior art that is most similar to the present invention,
−27098 may be raised. This prior art will be explained with reference to FIGS. 5A and 5B. One end of the latch body 15 is pivotally connected to one of the leg rods (not shown), and the other end of the latch body 15 has a large diameter portion 16a. and small diameter part 1
A substantially gourd-shaped engagement hole 16 consisting of They are engaged by continuous small diameter portions 16b, and the other end of the latch body 15 is engaged with the leg rod 17. A box-shaped latch lever 19 that mainly covers the large diameter part 16a to the small diameter part 16b of the latch hole 16 is pivotally connected to the latch body 15 by a pivot pin 20, and is normally attached to a spring 21. Therefore, the engaging lever 19 is brought into contact with the engaging body 15, and the engaging hole 1
It covers most of 6.
そして使用時にはばね21の付勢力に抗して掛
合レバー19を枢支ピン20を支点として回動せ
しめ、該レバー19で覆われる掛合孔16を開口
し、この状態で脚杆17に突設された掛合突子1
8を掛合孔16の径大部16aから径小部16b
に挿通掛合せしめ、しかる後掛合レバー19を閉
塞し、再びばね21に付勢されて該掛合レバー1
9は掛合孔16とこれに掛合される掛合突子18
を覆うようになつている。 When in use, the engaging lever 19 is rotated about the pivot pin 20 against the urging force of the spring 21, the engaging hole 16 covered by the lever 19 is opened, and in this state, the engaging lever 19 is rotated about the pivot pin 20, and in this state, the engaging lever 19 is rotated about the pivot pin 20. Takagobutsuko 1
8 from the large diameter portion 16a to the small diameter portion 16b of the engaging hole 16.
After that, the engaging lever 19 is closed, and the engaging lever 1 is again biased by the spring 21.
9 is a hooking hole 16 and a hooking protrusion 18 hooked thereto.
It is designed to cover the
このように掛合突子18が掛合レバー19に覆
われることによつて掛合突子18が掛合孔16の
径大部16a側に移動し、これより脱出しようと
しても掛合孔16の上面を覆う掛合レバー19に
阻止されて掛合突子18が掛合孔16から不測に
脱出することを防止するようになつている。 By covering the engagement protrusion 18 with the engagement lever 19 in this way, the engagement protrusion 18 moves toward the large diameter portion 16a of the engagement hole 16, and even if the engagement protrusion 18 attempts to escape from this, the engagement lever 19 covers the upper surface of the engagement hole 16. The lever 19 prevents the engaging protrusion 18 from accidentally escaping from the engaging hole 16.
(考案が解決しようとする問題点)
上記従来技術によれば一応掛合レバー19によ
つて掛合突子18が掛合孔16から脱出するのを
阻止するようになつているが、脚杆17または掛
金本体15の過大な変位力によつて掛合突子18
が掛合孔16の径大部16a側に強力に移動した
場合に、掛合突子18がその移動を阻止しようと
する掛合レバー19を過大な力で押圧し、これが
ために掛合レバー19を枢支する枢支ピン20に
過大な局部荷重が負荷してこれを破損し第5図A
の一点鎖線で示すように掛合レバー19が掛合孔
16の径大部16a側に偏移して径大部16aが
開放されこのため掛合突子18は掛合孔16から
脱出し、不測の事態を招く恐れが多分にある。(Problems to be Solved by the Invention) According to the above-mentioned prior art, the latch lever 19 is designed to prevent the latch protrusion 18 from escaping from the latch hole 16, but the leg rod 17 or the latch Due to the excessive displacement force of the main body 15, the engaging protrusion 18
When the latch moves strongly toward the large diameter portion 16a of the latch hole 16, the latch protrusion 18 presses the latch lever 19 with excessive force to prevent the movement, and this causes the latch lever 19 to be pivoted. An excessive local load was applied to the pivot pin 20, causing it to break.
As shown by the dashed line, the latch lever 19 shifts toward the large diameter portion 16a of the latch hole 16, opening the large diameter portion 16a, and the latch protrusion 18 escapes from the latch hole 16, preventing an unexpected situation. There is a high risk of inviting
したがつて本考案は、大略従来技術と似た構成
ではあるが、掛合突子が過大圧力によつて掛合レ
バーを押圧しても、掛合レバーが掛合孔から偏移
することのないこの種掛合装置を提案することを
目的とする。 Therefore, the present invention has a structure similar to that of the prior art, but this type of latch does not cause the latch lever to shift from the latch hole even if the latch protrusion presses the latch lever due to excessive pressure. The purpose is to propose a device.
(問題点を解決するための手段)
上記問題点を解決するために、本考案は脚立A
の一方の脚杆aに掛金本体1の基端部を揺動自在
に枢着し、掛金本体1の遊端部を他方の脚杆bに
突設した頭部付掛合突子2に掛脱可能に掛合する
ようにした脚立の掛合装置において、掛金本体1
の遊端部に径大部3aと径小部3bとからなる掛
合孔3を開設すると共に、常時はばね4に附勢さ
れて上記掛合孔3の径大部3aに嵌り込んで該径
大部3aを塞ぐ掛合レバー5を掛金本体1に擺動
可能に枢支し、前記頭部付掛合突子2は掛合レバ
ー5を擺動させて径大部3aに挿入され、これに
連通する径小部3bに掛合されるようになつてい
る構成を採用するものである。(Means for Solving the Problems) In order to solve the above problems, the present invention provides stepladder A.
The base end of the latch main body 1 is swingably pivoted to one of the leg rods a, and the free end of the latch main body 1 is hooked onto and detached from the head-attached latching protrusion 2 protruding from the other leg rod b. In a stepladder latching device that can be latched, the latching body 1
A hooking hole 3 consisting of a large-diameter portion 3a and a small-diameter portion 3b is provided at the free end of the hooking hole 3, and is normally energized by a spring 4 to fit into the large-diameter portion 3a of the hooking hole 3. A latch lever 5 that closes the portion 3a is slidably pivoted to the latch body 1, and the head-attached latch protrusion 2 is inserted into the large diameter portion 3a by sliding the latch lever 5, and a small diameter portion communicating therewith. 3b is adopted.
(実施例)
第1図において、Aは脚立で、一対のアルミニ
ウム押出型材からなる脚杆a,bをその上端部で
固着した枢着金具11によつて枢支連結してなる
ものである。1は掛金本体で、その基端部が一方
の脚杆aに植立した枢軸7に枢着され、これによ
つて掛金本体1は一点鎖線で示すように該枢軸7
を中心に上下に揺動自在で、かつその遊端部が他
方の脚杆bに対し若干遠近遊動自在になつてい
る。第2図において掛金本体1の遊端部には掛合
孔3が開設され、これに対応して脚杆bに頭部8
付掛合突子2が植立されている。掛合孔3は径大
部3aとこれに連設する径小部3bとからなる略
ひようたん形状になつており、この掛合孔3に対
応して掛合レバー5が掛金本体1に枢支されてい
る。即ち第2図、特に第3図に示すように掛合レ
バー5は平面視略くの字状に形成され、その先端
部に前記掛合孔3の径大部3aに嵌り込んで該径
大部3aを塞ぐ径幅の掛合片部5aを有し、くの
字の折曲部5bを支点としてその後端部にレバー
片部5cを有し、かつ中程部にばか孔5dを開設
し、掛金本体1に植立した頭部9付枢支ピン10
にばか孔5dを遊嵌し、該レバー5と枢支ピン1
0の頭部9との間に圧縮ばね4を介装することに
よつて掛合レバー5は常時は圧縮ばね4に附勢さ
れてレバー5の掛合片部5aが掛合孔3の径大部
3aに嵌り込んでこれを塞ぐと共に、第3図の一
点鎖線で示すように圧縮ばね4の附勢に抗してレ
バー片部5cを押圧することによつて掛合レバー
5は折曲部5bを支点として揺動し、その掛合片
部5aが径大部3aを開放するようになつてい
る。なお掛合片部5aにはその上端縁に起立壁5
eが折曲形成され、後述のように掛合突子2を正
確に掛合するようになつている。1aは掛金本体
1の下端縁をL状に折曲して形成した補強リブで
ある。(Example) In FIG. 1, A is a stepladder, which is constructed by pivotally connecting a pair of leg rods a and b made of extruded aluminum by a pivot fitting 11 fixed at their upper ends. Reference numeral 1 denotes a latch main body, the base end of which is pivotally attached to a pivot 7 installed on one of the leg rods a, whereby the latch main body 1 is attached to the pivot 7 as shown by the dashed line.
It can freely swing up and down around , and its free end can freely move toward and away from the other leg rod b. In Fig. 2, a latch hole 3 is provided at the free end of the latch body 1, and a head portion 8 is formed in the leg rod b correspondingly.
The interlocking protrusion 2 is planted. The latch hole 3 has a substantially latch shape consisting of a large diameter portion 3a and a small diameter portion 3b connected to the large diameter portion 3a, and a latch lever 5 is pivotally supported on the latch body 1 in correspondence with the latch hole 3. ing. That is, as shown in FIG. 2, especially FIG. 3, the engaging lever 5 is formed in a substantially dogleg shape in plan view, and its tip fits into the large diameter portion 3a of the engaging hole 3, and the large diameter portion 3a It has a latch piece part 5a with a diameter width that closes the latch body, has a lever piece part 5c at the rear end with the doglegged bent part 5b as a fulcrum, and has a hole 5d in the middle part, and the latch body Pivot pin 10 with head 9 planted on 1
Loosely fit the hole 5d into the lever 5 and the pivot pin 1.
By interposing the compression spring 4 between the head 9 of the lever 5 and the head 9 of the lever 5, the engagement lever 5 is normally energized by the compression spring 4, and the engagement piece 5a of the lever 5 engages the large diameter portion 3a of the engagement hole 3. By fitting in and blocking this, and pressing the lever piece 5c against the bias of the compression spring 4 as shown by the dashed line in FIG. The engaging piece portion 5a opens the large diameter portion 3a. Note that the hanging piece 5a has an upright wall 5 on its upper edge.
e is formed by bending so that the engaging protrusion 2 can be accurately engaged as described later. 1a is a reinforcing rib formed by bending the lower edge of the latch body 1 into an L shape.
一対の脚杆a,bを枢着軸11を中心に略A状
に対向させ脚立Aとして使用する場合には、第2
図に示すように掛金本体1の掛合孔3を脚杆bの
掛合突子2に対面させ、掛金本体1を矢印で示す
ように掛合突子2に近づけ、その径大部3aに挿
入する。この挿入動作によつて第4図に示すよう
に掛合突子2の頭部8は掛合レバー5の掛合片部
5aを押圧して径大部3aを開放し(第3図参
照)、しかる後掛合突子2を矢印で示すように径
小部3bに移行させることによつて掛合突子2の
頭部8が径小部3bに掛合され、同時に掛合レバ
ー5の掛合片部5aは掛合突子2の頭部8の押圧
から開放されるため、圧縮ばね4に附勢されて元
位置に復帰して径大部3aを塞ぐことになり、こ
のため掛合突子2は掛合片部5aに遮断されて径
大部3a側に脱出することができなくなり、掛金
本体1は掛合突子2に確実に掛合されることにな
る。特に掛合片部5aが径大部3aを塞ぐ際に、
掛合片部5aが径大部3aに没入状態に嵌り込む
ため、例え掛合突子2が過大圧力によつて掛合片
部5aを押圧しても掛合片部5aは径大部3aの
孔周壁で支持されるため、枢支ピン10に過荷重
が負荷することがなく、枢支ピン10の破損を防
止することができる。なお、この場合掛合片部5
aの上端縁に起立壁5eを一体形成することによ
つて掛合突子2の頭部8は起立壁5eに当接して
その掛合状態を一層確実に維持することになる。 When a pair of leg levers a and b are used as a stepladder A by facing each other in a substantially A shape with the pivot shaft 11 as the center, the second
As shown in the figure, the latch hole 3 of the latch body 1 is made to face the latch protrusion 2 of the leg rod b, and the latch body 1 is brought close to the latch protrusion 2 as shown by the arrow and inserted into its large diameter portion 3a. By this insertion operation, as shown in FIG. 4, the head 8 of the engaging protrusion 2 presses the engaging piece 5a of the engaging lever 5 to open the large diameter portion 3a (see FIG. 3), and then By moving the engaging protrusion 2 to the small diameter part 3b as shown by the arrow, the head 8 of the engaging protrusion 2 is engaged with the small diameter part 3b, and at the same time, the engaging piece 5a of the engaging lever 5 is moved to the small diameter part 3b. Since it is released from the pressure of the head 8 of the child 2, it is energized by the compression spring 4 and returns to its original position to close the large diameter portion 3a. It is blocked and cannot escape to the large diameter portion 3a side, and the latch main body 1 is reliably engaged with the engagement protrusion 2. Particularly when the hooking piece portion 5a closes the large diameter portion 3a,
Since the engaging piece portion 5a is retracted into the large diameter portion 3a, even if the engaging protrusion 2 presses the engaging piece portion 5a due to excessive pressure, the engaging piece portion 5a will not press against the hole circumferential wall of the large diameter portion 3a. Since it is supported, no overload is applied to the pivot pin 10, and damage to the pivot pin 10 can be prevented. In addition, in this case, the hooking piece part 5
By integrally forming the standing wall 5e on the upper end edge of a, the head 8 of the engaging protrusion 2 comes into contact with the standing wall 5e and maintains the engaged state more reliably.
掛金本体1の掛合状態を解除するためには、掛
合レバー5のレバー片部5cを圧縮ばね4の附勢
に抗して押圧すればよい。これによつて掛合片部
5aは折曲部5bを支点として径大部3aから遠
ざかるように揺動し、径大部3aを開放すること
になるから、掛合突子2が径小部3bから径大部
3a側に移行するよう掛金本体1を移動させるこ
とによつて、掛合本体1を掛合突起2から離脱さ
せることができる。 In order to release the latch body 1 from the engaged state, the lever piece 5c of the latch lever 5 may be pressed against the bias of the compression spring 4. As a result, the engaging piece part 5a swings away from the large diameter part 3a using the bent part 5b as a fulcrum, and opens the large diameter part 3a, so that the engaging protrusion 2 moves away from the small diameter part 3b. By moving the latch body 1 so as to move toward the large diameter portion 3a, the latch body 1 can be separated from the latch protrusion 2.
(作用及び効果)
したがつて本考案によれば、掛金本体の掛合突
子に対する掛合時には、該掛合突子は掛金本体に
枢支した掛合レバーに遮断されて掛金本体の掛合
孔から脱出することが物理的に不可能になり、衝
撃や振動によつて掛合状態が破壊されることがな
く安定して使用することができると共に、掛合状
態の解除時には単に掛合レバーを押圧するだけで
容易に解除することができるからその操作が非常
に簡単である。(Operations and Effects) Therefore, according to the present invention, when the latch body engages the latch protrusion, the latch protrusion is blocked by the latch lever pivotally supported on the latch body and escapes from the latch hole of the latch body. This makes it physically impossible, and the engaged state can be used stably without being destroyed by shock or vibration, and when the engaged state is released, it can be easily released by simply pressing the engaging lever. It is very easy to operate.
特に本考案によれば、掛合レバーによつて掛合
孔の径大部を塞ぐ際に、掛合レバーは掛合孔に嵌
り込んだ状態にあるため、掛合突子が掛合レバー
を強力に押圧しても掛合レバーは掛合孔の周壁に
支持され、掛合レバーを枢支する枢支ピンに過荷
重が負荷することがなく、枢支ピンの破損を防止
することができる。このため脚杆や掛金本体に対
する衝撃や振動によつて掛合突子が掛合レバーを
強力に押圧しても掛合レバーが偏移することがな
く、掛合突子の掛合孔への掛合状態を確実に保持
することができ、極めて安全に使用することがで
きる。 In particular, according to the present invention, when the large-diameter portion of the engagement hole is closed by the engagement lever, the engagement lever is fitted into the engagement hole, so even if the engagement protrusion strongly presses the engagement lever. The engaging lever is supported by the peripheral wall of the engaging hole, and no overload is applied to the pivot pin that pivotally supports the engaging lever, thereby preventing damage to the pivot pin. For this reason, even if the engaging protrusion strongly presses the engaging lever due to impact or vibration on the leg rod or latch body, the engaging lever will not shift, and the engaging state of the engaging protrusion in the engaging hole will be ensured. It can be held and used extremely safely.
図面は、本考案の一実施例を示すもので、その
うち第1図は正面図、第2図は斜視図、第3図は
第2図の−線断面図、第4図は同使用状態を
示す斜視図、第5図A及び第5図Bは従来技術を
示す正面図及び横断平面図である。
A……脚立、a,b……脚杆、1……掛金本
体、2……頭部付掛合突子、3……掛合孔、3a
……径大部、3b……径小部、4……ばね、5…
…掛合レバー。
The drawings show one embodiment of the present invention, of which Fig. 1 is a front view, Fig. 2 is a perspective view, Fig. 3 is a sectional view taken along the line - - of Fig. 2, and Fig. 4 shows the same state of use. The perspective view shown in FIG. 5A and FIG. 5B are a front view and a cross-sectional plan view showing the prior art. A... Stepladder, a, b... Leg rod, 1... Latch main body, 2... Head-attached engagement protrusion, 3... Engagement hole, 3a
...Large diameter part, 3b...Small diameter part, 4...Spring, 5...
...Latching lever.
Claims (1)
動自在に枢着し、掛金本体1の遊端部を他方の脚
杆bに突設した頭部付掛合突子2に掛脱可能に掛
合するようにした脚立の掛合装置において、掛金
本体1の遊端部に径大部3aと径小部3bとから
なる掛合孔3を開設すると共に、常時はばね4に
附勢されて上記掛合孔3の径大部3aに嵌り込ん
で該径大部を塞ぐ掛合レバー5を掛金本体1に擺
動可能に枢支し、前記頭部付掛合突子2は掛合レ
バー5を擺動させて径大部3aに挿入され、これ
に連通する径小部3bに掛合されるようになつて
いる脚立の掛合装置。 The base end of a latch main body 1 is pivotally attached to one of the leg rods a of the stepladder, and the free end of the latch main body 1 is hooked to a head-attached latching protrusion 2 protruding from the other leg rod b. In a stepladder engagement device that is removably engaged, a engagement hole 3 consisting of a large-diameter portion 3a and a small-diameter portion 3b is provided at the free end of the latch body 1, and is normally energized by a spring 4. A latch lever 5 that fits into the large diameter portion 3a of the latch hole 3 and closes the large diameter portion is slidably supported on the latch body 1, and the head-mounted latch protrusion 2 allows the latch lever 5 to slide. A stepladder engaging device that is inserted into a large diameter portion 3a and engaged with a small diameter portion 3b communicating therewith.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984167298U JPH0355758Y2 (en) | 1984-11-02 | 1984-11-02 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984167298U JPH0355758Y2 (en) | 1984-11-02 | 1984-11-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6183799U JPS6183799U (en) | 1986-06-03 |
JPH0355758Y2 true JPH0355758Y2 (en) | 1991-12-12 |
Family
ID=30725099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1984167298U Expired JPH0355758Y2 (en) | 1984-11-02 | 1984-11-02 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0355758Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4937226B2 (en) * | 2008-10-06 | 2012-05-23 | アルインコ株式会社 | Opening device for stepladder |
KR200457430Y1 (en) | 2009-06-03 | 2011-12-20 | 주식회사 서진인스텍 | Device for connecting for chain and operating rod assembly of level transmitter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720798B2 (en) * | 1976-10-01 | 1982-05-01 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5257099U (en) * | 1975-10-17 | 1977-04-25 | ||
JPS5720798U (en) * | 1980-07-10 | 1982-02-03 |
-
1984
- 1984-11-02 JP JP1984167298U patent/JPH0355758Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720798B2 (en) * | 1976-10-01 | 1982-05-01 |
Also Published As
Publication number | Publication date |
---|---|
JPS6183799U (en) | 1986-06-03 |
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