JPH0243740Y2

JPH0243740Y2 -

Info

Publication number: JPH0243740Y2
Application number: JP2756584U
Authority: JP
Priority date: 1984-02-28
Filing date: 1984-02-28
Publication date: 1990-11-20
Also published as: JPS60138754U

Description

【考案の詳細な説明】〔技術分野〕本考案はシリアルプリンタの印字ヘツドをキヤ
リツジに取付け固定する構造に関するものであ
る。[Detailed Description of the Invention] [Technical Field] The present invention relates to a structure for attaching and fixing a print head of a serial printer to a carriage.

[Prior art]

従来、この種の印字ヘツドはキヤリツジにねじ
止めして取付けていた。そのため、ヘツドの取付
及び交換を行う際には工具を必要とし作業に手間
がかかつた。 Traditionally, print heads of this type have been screwed onto the carriage. Therefore, when installing or replacing the head, tools were required and the work was time-consuming.

〔the purpose〕

本考案は上記の欠点を除いて、印字ヘツドの取
付、取外しに工具を一切使用せず、簡単、迅速に
行うことができるようにしたものである。そし
て、上記した目的を達成するため本考案による印
字ヘツドの取付構造は、溝が形成された脚部を有
する印字ヘツドと、脚部が挿入される挿入部が形
成されたキヤリツジと、印字ヘツドが搭載される
側とは反対側のキヤリツジの面上に回動可能に軸
支され、前記した溝内に嵌挿され弾性を有するバ
ネ部が形成されたロツクレバーとを有し、この溝
内にバネ部を嵌挿して印字ヘツドをキヤリツジに
固定することを特徴とするものである。 The present invention eliminates the above-mentioned drawbacks and allows the printing head to be installed and removed easily and quickly without using any tools. In order to achieve the above object, the print head mounting structure according to the present invention includes a print head having legs with grooves formed therein, a carriage having an insertion part into which the legs are inserted, and a print head having legs formed with grooves. It has a lock lever that is rotatably supported on the surface of the carriage opposite to the side on which the carriage is mounted, and that is fitted into the groove described above and has an elastic spring portion formed therein. The print head is fixed to the carriage by inserting the print head into the cartridge.

〔Example〕

本考案の一実施例を第１図に沿つて説明する。 An embodiment of the present invention will be described with reference to FIG.

印字ヘツド１には下方に伸びた脚部３を有し、
かつ脚部３の両側部には凹型の溝３−１を形成し
ている。キヤリツジ２には印字ヘツド１の脚部３
と係合する挿入部である穴２−１を形成し、さら
に印字ヘツド１を搭載する面と反対側の面２−２
には、弾性材からなるロツクレバー４が前記凹型
の溝３−１と係合する位置から全く係合しない位
置まで回転可能に軸支されており、Ｕ字形に成形
されたバネ部４−１とツマミ部４−２とを有して
いる。バネ部材５はロツクレバー４に係合し、前
記凹型の溝３−１とロツクレバー４が係合しない
位置に回転するように付勢している。また、印字
ヘツドの脚部３のキヤリツジ２上の穴２−１と係
合する面上には微少の山形突起３−２が形成され
ている。 The print head 1 has legs 3 extending downward,
Further, concave grooves 3-1 are formed on both sides of the leg portion 3. Carriage 2 has legs 3 of print head 1.
A hole 2-1 is formed as an insertion portion to be engaged with the print head 1, and a surface 2-2 opposite to the surface on which the print head 1 is mounted is formed.
A lock lever 4 made of an elastic material is rotatably supported from a position where it engages with the concave groove 3-1 to a position where it does not engage at all. It has a knob part 4-2. The spring member 5 engages the lock lever 4 and urges it to rotate to a position where the concave groove 3-1 and the lock lever 4 do not engage. Furthermore, a minute chevron-shaped protrusion 3-2 is formed on the surface of the leg portion 3 of the print head that engages with the hole 2-1 on the carriage 2.

次に固定の方法について述べる。 Next, the fixing method will be described.

印字ヘツド１の脚部３をキヤリツジ２の中央の
穴２−１に挿入し、次にロツクレバー４を回転し
てバネ部４−１を脚部３の凹型の溝３−１に係合
させる。バネ部４−１は凹型の溝３−１とキヤリ
ツジ上の面２−２との間に作用してバネ力を発生
し、印字ヘツド１をキヤリツジ２に加圧固定す
る。ツマミ４−２は作業しやすいようにキヤリツ
ジの上方に伸びて形成されている。バネ部材５は
ロツクレバー４に対しキヤリツジ２に印字ヘツド
１が挿入されていないとき、ロツクレバーのバネ
部４−１をキヤリツジ２の穴２−１から外れた位
置に待機するように作用する。従つて、再び印字
ヘツド１の脚部３をキヤリツジ２に挿入すると
き、脚部３がロツクレバー４に干渉して挿入不良
や折損が起こることはない。また、第３図に示す
如く、脚部３の突起３−２の先端から脚部３の反
対側までの長さをＸ、キヤリツジ２の穴２−１の
Ｘと同じ方向の長さをＹとするとＸとＹが次の関
係式を溝たすように突起３−２が形成されてお
り、Ｘ＝Ｙ＋0.05（mm）この長さ関係により、印字ヘツドのキヤリツジに
対するガタつきをなくしている。 The leg 3 of the printhead 1 is inserted into the central hole 2-1 of the carriage 2, and the lock lever 4 is then rotated to engage the spring 4-1 in the concave groove 3-1 of the leg 3. The spring portion 4-1 acts between the concave groove 3-1 and the surface 2-2 on the carriage to generate a spring force, thereby fixing the printing head 1 to the carriage 2 under pressure. The knob 4-2 is formed to extend above the carriage for ease of operation. The spring member 5 acts on the lock lever 4 to keep the spring portion 4-1 of the lock lever at a position out of the hole 2-1 of the carriage 2 when the printing head 1 is not inserted into the carriage 2. Therefore, when the leg part 3 of the print head 1 is inserted into the carriage 2 again, the leg part 3 will not interfere with the lock lever 4 and will not cause incorrect insertion or breakage. Further, as shown in Fig. 3, the length from the tip of the protrusion 3-2 of the leg 3 to the opposite side of the leg 3 is X, and the length of the hole 2-1 of the carriage 2 in the same direction as X is Y. Then, the protrusion 3-2 is formed so that X and Y satisfy the following relational expression: There is.

他の実施例を示すと、前記実施例では、印字ヘ
ツドの脚部とそれに係合するロツクレバーのバネ
部が二対であるのに対し一対とした構造のもの、
また、前記実施例では、１つのロツクレバーに２
つのバネ部を形成していたのに対し、１つのバネ
部を形成した２つのロツクレバーをキヤリツジに
軸支した構造のものであり、固定の方法は前記実
施例と同様である。 To show another embodiment, in the above embodiment, the leg portion of the print head and the spring portion of the lock lever that engages with the leg portion are one pair, whereas the leg portions of the print head and the spring portions that engage with the leg portions are one pair.
In addition, in the above embodiment, one lock lever has two lock levers.
In contrast to the previous example in which two spring parts were formed, the structure is such that two lock levers each forming one spring part are pivotally supported on a carriage, and the method of fixing is the same as in the previous embodiment.

〔effect〕

以上説明したように本考案によれば、印字ヘツ
ドをキヤリツジに差し込み、ロツクレバーを回転
して印字ヘツドの脚部に形成された凹部と係合す
ることにより、印字ヘツドをキヤリツジに固定す
るので、工具を使う必要もなく、その工具を用い
て行う取付け作業の手間も省くことができ、簡単
で迅速に印字ヘツドを取付けることができる効果
がある。 As explained above, according to the present invention, the print head is fixed to the carriage by inserting the print head into the carriage and rotating the lock lever to engage the recess formed in the leg of the print head. There is no need to use a tool, and the trouble of installation work performed using such tools can be saved, and the print head can be installed easily and quickly.

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す分解斜視図、
第２図は取付け状態でのＡ−A′断面図、第３図
は印字ヘツドの断面とキヤリツジの穴の長さ関係
を示す図、第４図は係合部の斜視図である。第５
図は従来例の一例である。１……印字ヘツド、２……キヤリツジ、２−１
……キヤリツジの穴、３……印字ヘツドの脚部、
３−１……脚部の凹部、３−２……脚部の突起、
４……ロツクレバー、４−１……ロツクレバーの
バネ部、５……バネ部材、７……ネジ。 FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
FIG. 2 is a sectional view taken along the line A-A' in the installed state, FIG. 3 is a diagram showing the relationship between the cross section of the print head and the length of the hole in the carriage, and FIG. 4 is a perspective view of the engaging portion. Fifth
The figure is an example of a conventional example. 1... Print head, 2... Carriage, 2-1
...Carriage hole, 3...Print head leg,
3-1... Recessed part of the leg part, 3-2... Protrusion part of the leg part,
4... Lock lever, 4-1... Spring portion of lock lever, 5... Spring member, 7... Screw.

Claims

[Claims for Utility Model Registration] A printing head having legs with grooves formed therein, a carriage having an insertion part into which the legs are inserted, and a carriage on the side opposite to the side on which the printing head is mounted. a lock lever rotatably supported on the surface of the carriage and formed with an elastic spring portion that is fitted into the groove; A mounting structure for a print head, characterized in that the print head is fixed to the carriage by elasticity.