JPS6239032Y2

JPS6239032Y2 -

Info

Publication number: JPS6239032Y2
Application number: JP5548482U
Authority: JP
Priority date: 1982-04-15
Filing date: 1982-04-15
Publication date: 1987-10-05
Also published as: JPS58158091U

Description

【考案の詳細な説明】この考案はパンタグラフ形ジヤツキに関するも
のである。[Detailed description of the invention] This invention relates to a pantograph type jack.

一般にパンタグラフ形ジヤツキにおいては、ヘ
ツド（荷受台）がベース（基台）の上方において
安定した姿勢を保持しながら昇降するようにする
ために、菱形のリンク仕掛を形成する一対の上部
リンクのヘツド枢着端部と、一対の下部リンクの
ベース枢着端部のそれぞれに、互いに係合する部
分歯車状部を設けるが、最近この部分歯車状部
は、ジヤツキの製作コストの低減等の点から、リ
ンクの端部に、別体成形の部分歯車体を付設する
ことによつて形成することが行われている。 Generally, in a pantograph type jack, in order to raise and lower the head while maintaining a stable posture above the base, the head pivot of a pair of upper links forming a diamond-shaped link mechanism is used. A partial gear-shaped part that engages with each other is provided on each of the connecting end and the base pivoting end of the pair of lower links, but these partial gear-shaped parts have recently been developed from the viewpoint of reducing the manufacturing cost of jacks. The link is formed by attaching a separately molded partial gear body to the end of the link.

しかし周知の細幅の部分歯車体を、チヤンネル
形リンクの端部の両側壁間において、枢着ピンに
より貫通支持するとともにスペーサを介して挾圧
する構成には、微小ではあるが部分歯車体が枢着
ピン周りにおいて揺動するという固定の不確実さ
の問題があつた。 However, in the known structure in which a narrow partial gear body is supported between both side walls of the end of a channel link by a pivot pin and is clamped via a spacer, the partial gear body, although small, is attached to the pivot point. There was a problem with the fixation being uncertain as it oscillated around the attachment pin.

この考案に係るジヤツキは、このような問題を
可能な限り簡単な構造上の改変によつて解消する
ことを目的として案出したもので、図面に例示す
るように、チヤンネル形リンクの端部の両側壁１
１，１３間において、細幅の部分歯車体２１を、
枢着ピン１７によつて貫通支持するとともにスペ
ーサ１９を介して挾圧し、部分歯車体２１と該部
分歯車体２１が当接する一方の側壁１１部に、枢
着ピン１７貫通部からリンクの長さ方向に間隔を
おいて、互いに嵌合する穴２３と突起１１ａを設
け、さらに部分歯車体２１の背部２５をウエブ壁
１５に当接させたことを構成上の特徴としてい
る。 The jack according to this invention was devised with the aim of solving this problem by making as simple a structural modification as possible, and as illustrated in the drawing, the jack at the end of the channel link Both side walls 1
Between 1 and 13, a narrow partial gear body 21,
It is penetrated and supported by the pivot pin 17 and is clamped through the spacer 19, and the length of the link is attached to the partial gear body 21 and one side wall 11 portion where the partial gear body 21 comes into contact. The structure is characterized in that holes 23 and protrusions 11a that fit into each other are provided at intervals in the direction, and that the back portion 25 of the partial gear body 21 is brought into contact with the web wall 15.

このような特徴構成を備えたこの考案のジヤツ
キによれば、穴２３と突起１１ａとの嵌合および
背部２５とウエブ壁１５との当接のため、部分歯
車体２１が枢着ピン１７周りに揺動するおそれは
ほとんどなく、したがつて部分歯車体２１は実質
的にはリンクと一体的に固定した形態にあると見
なすことができる。 According to the jack of this invention having such a characteristic configuration, the partial gear body 21 is moved around the pivot pin 17 due to the fitting between the hole 23 and the protrusion 11a and the abutment between the back portion 25 and the web wall 15. There is almost no risk of rocking, and therefore the partial gear body 21 can be considered to be substantially fixed integrally with the link.

この考案に係るジヤツキにおいて部分歯車体２
１と側壁１１に設ける穴２３と突起１１ａは、一
般には図示のごとく、前者を部分歯車体２１に、
後者を側壁１１に設けることができるが、前者を
側壁１１ａに、後者を部分歯車体２１に設けるこ
ともできる。いずれの場合でも、突起１１ａはた
とえばバーニング加工によつて形成すれば、側壁
１１または部分歯車体２１に簡単に形成すること
ができる。 In the jacking according to this invention, the partial gear body 2
1 and the hole 23 and protrusion 11a provided in the side wall 11, the former is generally connected to the partial gear body 21 as shown in the figure.
The latter can be provided on the side wall 11, but the former can also be provided on the side wall 11a and the latter on the partial gear body 21. In either case, the protrusion 11a can be easily formed on the side wall 11 or the partial gear body 21 by, for example, a burning process.

[Brief explanation of the drawing]

図面はこの考案に係るパンタグラフ形ジヤツキ
の一実施例の要部を示したもので、第１図は平面
図、第２図は右側面図、第３図は第１図の−
線に沿う正断面図である。１１……側壁、１１ａ……突起、１３……側
壁、１５……ウエブ壁、１７……枢着ピン、１９
……スペーサ、２１……部分歯車体、２３……
穴、２５……背部。 The drawings show the main parts of an embodiment of the pantograph-type jack according to this invention, in which Fig. 1 is a plan view, Fig. 2 is a right side view, and Fig. 3 is the same as Fig. 1.
It is a front sectional view taken along the line. 11...Side wall, 11a...Protrusion, 13...Side wall, 15...Web wall, 17...Pivot pin, 19
... Spacer, 21 ... Partial gear body, 23 ...
Hole, 25...back.

Claims

[Scope of utility model registration request]

A narrow partial gear body is passed through and supported by a pivot pin between both side walls of the end of the channel link, and is clamped through a spacer. A pantograph type jack in which holes and protrusions that fit into each other are provided in the side wall part at intervals in the length direction of the link from the penetrating part of the pivot pin, and the back part of the partial gear body is brought into contact with the web wall. .