JPH0417152B2 - - Google Patents
Info
- Publication number
- JPH0417152B2 JPH0417152B2 JP59159600A JP15960084A JPH0417152B2 JP H0417152 B2 JPH0417152 B2 JP H0417152B2 JP 59159600 A JP59159600 A JP 59159600A JP 15960084 A JP15960084 A JP 15960084A JP H0417152 B2 JPH0417152 B2 JP H0417152B2
- Authority
- JP
- Japan
- Prior art keywords
- hammer
- tip
- impact load
- nickel plating
- carburized
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- 238000007747 plating Methods 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 238000001556 precipitation Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005255 carburizing Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J9/00—Hammer-impression mechanisms
- B41J9/02—Hammers; Arrangements thereof
- B41J9/133—Construction of hammer body or tip
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、情報処理装置の出力機器等に用いる
プリンタ用ハンマ及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hammer for a printer used in an output device of an information processing apparatus, and a method for manufacturing the same.
従来のプリンタは、例えば第３図に示すような
構成となつていた。図中１はプラテン、２は印字
用紙、３は印字リボン、４は活字体、５は印字用
のハンマで、該ハンマ５は、周囲にコイル６が巻
装され且つプラスチツク製の軸受７にて摺動可能
に支持されている。そして、コイル６を励磁する
ことによつてハンマ７がプラテン１側に摺動突出
し、活字体４はプラテン１上に押付け、印字リボ
ン３を介して、印字用紙上に所定文字等を印字す
るようになつている。尚、ハンマ５は磁性特性の
関係上、純鉄にて形成されている。このハンマ５
は、活字体４と当接する先端の衝撃荷重部５ａ及
び軸受７と摺接する摺動部５ｂが磨耗し易いこと
から、従来では衝撃荷重部５ａに局部浸炭焼入後
摺動部５ｂを含む先端部全体にハードクロムメツ
キを施すか、あるいは衝撃荷重部５ａ及び摺動部
５ｂからなる先端部全体に無電解ニツケルメツキ
を施した後焼鈍をするか、いずれかの方法によつ
て製造するようにしていた。
A conventional printer has a configuration as shown in FIG. 3, for example. In the figure, 1 is a platen, 2 is a printing paper, 3 is a printing ribbon, 4 is a type, and 5 is a hammer for printing.The hammer 5 has a coil 6 wound around it and a plastic bearing 7. It is slidably supported. Then, by energizing the coil 6, the hammer 7 slides and protrudes toward the platen 1, and the type body 4 is pressed onto the platen 1, and predetermined characters, etc. are printed on the printing paper via the printing ribbon 3. It's getting old. Note that the hammer 5 is made of pure iron due to its magnetic properties. This hammer 5
Since the impact load portion 5a at the tip that comes into contact with the type body 4 and the sliding portion 5b that comes into sliding contact with the bearing 7 are likely to wear out, conventionally, the tip of the impact load portion 5a includes a sliding portion 5b after local carburizing and quenching. It is manufactured by either applying hard chrome plating to the entire part, or applying electroless nickel plating to the entire tip part consisting of the impact load part 5a and the sliding part 5b, and then annealing it. Ta.
しかしながら、このような従来のプリンタ用ハ
ンマにあつては、上述のように先端部にハードク
ロムメツキを施す場合、先端部が角柱状になつて
いるため、エツジ部に余分のメツキが付着し易
く、その結果エツジ部に付着したメツキ部分によ
つてプラスチツク製の軸受７に傷をつけてしまう
ことになり、しかも無給油で使用するためにプラ
スチツク製の軸受７を使用するものであつて、こ
の軸受７の傷つきは避け難いものである。また、
先端部に無電解ニツケルメツキを施した後、焼鈍
する場合は、焼鈍による析出硬化により、表面は
硬くなるが、硬化層が薄いため鈍鉄製のハンマ本
体の先端が衝撃荷重により潰れて凹んでしまうと
いう問題点があつた。
However, with such conventional printer hammers, when hard chrome plating is applied to the tip as described above, the tip is prismatic, so excess plating tends to adhere to the edge. As a result, the plastic bearing 7 will be damaged by the plating attached to the edge.Moreover, the plastic bearing 7 is used in order to be used without lubrication. Damage to the bearing 7 is unavoidable. Also,
When annealing is performed after applying electroless nickel plating to the tip, the surface becomes hard due to precipitation hardening due to annealing, but because the hardened layer is thin, the tip of the blunt iron hammer body is crushed and dented by the impact load. There was a problem.
本発明は、ハンマ先端部のエツジ部に余分のメ
ツキが付着してプラスチツク製の軸受を傷つけた
り、表面の硬化層が薄いためにハンマ本体の先端
部が潰れて凹むのを防止し、磁性特性に影響を与
えることなく耐磨耗性を向上させることにより、
上記従来の問題点を解決せんとするものである。
The present invention prevents excess plating from adhering to the edge of the hammer tip and damaging the plastic bearing, and prevents the tip of the hammer body from being crushed and dented due to the thin hardened layer on the surface, and has magnetic properties. By improving wear resistance without affecting
This is an attempt to solve the above-mentioned conventional problems.
そして具体的には本発明は、第１に、軟鉄製の
ハンマ本体の先端部のうち、衝撃荷重部に浸炭焼
入の焼戻し部を備え、且つ摺動部表面にニツケル
メツキ析出硬化部を備えたプリンタ用ハンマ、そ
して第２に軟鉄製のハンマ材を所定形状に切削加
工した後、衝撃荷重部の浸炭焼入を行い、次いで
衝撃荷重部を研磨し、その後少なくとも上記衝撃
荷重部及び摩擦抵抗を受ける摺動部に無電解ニツ
ケルメツキを施し、更に焼鈍して浸炭焼入の焼戻
し及び析出硬化を行うプリンタ用ハンマの製造方
法を提供することにより、上記従来の問題点を解
決している。 Specifically, the present invention provides, first, a carburized and quenched tempered part in the impact load part of the tip of the soft iron hammer body, and a nickel plating precipitation hardened part on the sliding part surface. After cutting a hammer for a printer and secondly a soft iron hammer material into a predetermined shape, the impact load area is carburized and quenched, the impact load area is polished, and then at least the impact load area and frictional resistance are reduced. The above-mentioned conventional problems are solved by providing a method for manufacturing a printer hammer in which the receiving sliding part is electroless nickel plated, then annealed, carburized, tempered, and precipitation hardened.
以下、本発明の一実施例を、第１図及び第２図
に基づいて説明する。尚、以下において従来の共
通の部分には共通の符号を付し、重復する説明は
省略する。
Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2. In addition, in the following, common parts in the prior art are given common reference numerals, and repeated explanations will be omitted.
まず、プリンタ用ハンマについて説明する。図
中１０がハンマ、１１がハンマ本体、１２が先端
部で、該先端部１２は、活字体４と当接する衝撃
荷重部１２ａ及び軸受け７と摺接する摺動部１２
ｂとからなるもので、略角柱形状とされている。
尚、基礎部側は円柱形状となつている。また、ハ
ンマ本体１１は、軟鉄にて形成され、その先端部
１２のうち、衝撃荷重部１２ａに浸炭焼入の焼戻
し部１３を備え、且つ摺動部２ｂの表面にニツケ
ルメツキ析出硬化部１４を備えたものとされてい
る。従つて、衝撃荷重部１２ａは、浸炭焼入の焼
戻し部１３によつて確実に保護され、また、摺動
部１２ｂはニツケルメツキ析出硬化部１４によつ
て保護され、潰れず、しかも耐摩耗性の高いもの
とされている。 First, the printer hammer will be explained. In the figure, 10 is a hammer, 11 is a hammer main body, and 12 is a tip.
b, and has a substantially prismatic shape.
Note that the base side has a cylindrical shape. The hammer body 11 is made of soft iron, and includes a carburized and quenched tempered portion 13 in the impact load portion 12a of the tip portion 12, and a nickel plating precipitation hardened portion 14 on the surface of the sliding portion 2b. It is said that Therefore, the impact load portion 12a is reliably protected by the carburized and quenched tempered portion 13, and the sliding portion 12b is protected by the nickel plating precipitation hardened portion 14, which prevents crushing and has wear resistance. It is considered expensive.
次ぎに、プリンタ用ハンマの製造方法について
説明する。まず、軟鉄製のハンマ材（図示せず）
を第２図のごとく、基端部側が円柱状、先端部１
２側が角柱状（四角柱状）になるように切削加工
する。次ぎに、上述の如き形状に切削加工したハ
ンマ本体１０の先端部１２における衝撃荷重部１
２ａの浸炭焼入を行う。次いで、浸炭焼入を行つ
た衝撃荷重部１２ａを研摩する。そして、衝撃荷
重部１２ａの研摩処理の後、少なくとも先端部１
２、即ち衝撃荷重部１２ａ及び軸受７との摩擦抵
抗を受ける摺動部１２ｂに無電解ニツケルメツキ
を施す。そして更に、ハンマ本体１１を焼鈍し、
この焼鈍により浸炭焼入した先端面の衝撃荷重部
１２ａの焼戻し及びニツケルメツキを施した先端
側面の摺動部１２ｂの析出効果とが同時に行わ
れ、衝撃荷重部１２ａに浸炭焼入の焼戻し部１３
を、また摺動部１２ｂの表面にニツケルメツキ析
出硬化部１４を形成するものである。上記焼鈍の
結果、浸炭焼入の焼戻し部１３は、ビツカース硬
度Hv700程度であつたものが、Hv400〜450程度
となり、また、ニツケルメツキ析出硬化部１４
は、Hv500程度の硬さとなる。従つて、衝撃荷重
部１２ａは浸炭焼入の焼戻し部１３により十分な
硬度を有し、且つ摺動部１２ｂはニツケルメツキ
析出硬化部１４により滑らかとなる。 Next, a method for manufacturing a printer hammer will be described. First, a soft iron hammer material (not shown)
As shown in Figure 2, the proximal end is cylindrical and the distal end 1
The second side is cut into a prismatic shape (quadrangular prism shape). Next, the impact load portion 1 at the tip portion 12 of the hammer body 10 which has been cut into the shape described above is
2a carburizing and quenching is performed. Next, the impact load portion 12a that has been carburized and quenched is polished. After polishing the impact load portion 12a, at least the tip portion 1
2. That is, electroless nickel plating is applied to the impact load portion 12a and the sliding portion 12b which receives frictional resistance with the bearing 7. Furthermore, the hammer body 11 is annealed,
By this annealing, the impact load portion 12a of the carburized and quenched tip surface is tempered and the nickel-plated sliding portion 12b of the tip side surface is precipitated simultaneously, and the carburized and quenched tempered portion 13 of the impact load portion 12a is heated.
Also, a nickel plating precipitation hardened portion 14 is formed on the surface of the sliding portion 12b. As a result of the above annealing, the carburized and quenched tempered part 13 has a Vickers hardness of about Hv700, but has become about Hv400 to 450, and the nickel plating precipitation hardened part 14
has a hardness of about Hv500. Therefore, the impact load portion 12a has sufficient hardness due to the carburized and quenched tempered portion 13, and the sliding portion 12b is smooth due to the nickel plating precipitation hardened portion 14.
以上説明してきたように、本発明のプリンタ用
ハンマ及びその製造方法は、上述の如き構成とし
たため、ハンマ本体の先端部のうち、衝撃荷重部
に形成した浸炭焼入の焼戻し部によつて衝撃荷重
部を衝撃荷重に対し十分な強度にすることがで
き、しかも、ニツケルメツキ析出硬化部の存在に
よつて摺動部の表面を滑らかで且つ十分な耐磨耗
性を持つたものとすることができ、更には、ハー
ドクロムメツキを採用していないので、従来のよ
うにエツジ部に付着した余分なメツキ部分によつ
てプラスチツク製の軸受を傷つけるようなことも
なく、軸受の耐用性を向上させることができると
いう効果がある。
As explained above, since the printer hammer and the manufacturing method thereof of the present invention have the above-described configuration, the carburized and quenched tempered portion formed in the impact load portion of the tip portion of the hammer body absorbs the impact. The load portion can be made strong enough to withstand impact loads, and the surface of the sliding portion can be smooth and have sufficient wear resistance due to the presence of the nickel plating precipitation hardened portion. Moreover, since hard chrome plating is not used, the plastic bearings will not be damaged by excess plating attached to the edges unlike conventional methods, improving the durability of the bearings. It has the effect of being able to
第１図は、本発明の一実施例に係るハンマを用
いたプリンタの部分断面図、第２図は、上記ハン
マの斜視図、そして、第３図は、従来例を示す第
１図相当の部分断面図である。
１０……ハンマ、１１……ハンマ本体、１２…
…先端部、１２ａ……衝撃荷重部、１２ｂ……摺
動部、１３……浸炭焼入の焼戻し部、１４……ニ
ツケルメツキ析出硬化部。
FIG. 1 is a partial cross-sectional view of a printer using a hammer according to an embodiment of the present invention, FIG. 2 is a perspective view of the hammer, and FIG. 3 is a diagram equivalent to FIG. 1 showing a conventional example. FIG. 10...hammer, 11...hammer body, 12...
... Tip part, 12a ... Impact load part, 12b ... Sliding part, 13 ... Tempering part of carburizing and quenching, 14 ... Nickel plating precipitation hardening part.
Claims (1)
衝撃荷重部と、 無電解ニツケルメツキを施してから析出硬化し
たハンマ先端側面の摺動部、 とを設けたことを特徴としたプリンタ用ハンマ。 ２ 軟鉄製のハンマ本体の先端面の衝撃荷重部を
浸炭焼入れしてからハンマ先端側面に無電解ニツ
ケルメツキを施し、その後ハンマ本体を焼鈍する
ことにより、浸炭焼入れ部を施した先端面の衝撃
荷重部の焼戻しおよび無電解ニツケルメツキを施
した先端側面の摺動部の析出効果とが同時に行わ
れるプリンタ用ハンマの製造方法。[Scope of Claims] 1. A hammer body made of soft iron, an impact load portion on the hammer tip surface that has been carburized and quenched and then tempered, and a sliding portion on the hammer tip side surface that has been subjected to electroless nickel plating and then precipitation hardened. A printer hammer characterized by the following features: 2. By carburizing and quenching the impact load portion of the tip surface of a soft iron hammer body, applying electroless nickel plating to the side surface of the hammer tip, and then annealing the hammer body, the impact load portion of the tip surface that has been carburized and quenched. A method of manufacturing a printer hammer in which tempering and electroless nickel plating of a sliding part on the side surface of the tip are simultaneously performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15960084A JPS6135977A (en) | 1984-07-30 | 1984-07-30 | Hammer for printer and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15960084A JPS6135977A (en) | 1984-07-30 | 1984-07-30 | Hammer for printer and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6135977A JPS6135977A (en) | 1986-02-20 |
| JPH0417152B2 true JPH0417152B2 (en) | 1992-03-25 |
Family
ID=15697240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15960084A Granted JPS6135977A (en) | 1984-07-30 | 1984-07-30 | Hammer for printer and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6135977A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1112222A (en) | 1997-06-25 | 1999-01-19 | Nippon Shokubai Co Ltd | Recovery of acrylic acid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565281A (en) * | 1979-06-27 | 1981-01-20 | Yamaha Motor Co Ltd | Steering ski suspension for snowmobile |
| JPS5970585A (en) * | 1982-10-15 | 1984-04-21 | Hitachi Ltd | Printing head |
-
1984
- 1984-07-30 JP JP15960084A patent/JPS6135977A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565281A (en) * | 1979-06-27 | 1981-01-20 | Yamaha Motor Co Ltd | Steering ski suspension for snowmobile |
| JPS5970585A (en) * | 1982-10-15 | 1984-04-21 | Hitachi Ltd | Printing head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135977A (en) | 1986-02-20 |
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