JPH05175676A - Electronic-apparatus device - Google Patents
Electronic-apparatus deviceInfo
- Publication number
- JPH05175676A JPH05175676A JP3342804A JP34280491A JPH05175676A JP H05175676 A JPH05175676 A JP H05175676A JP 3342804 A JP3342804 A JP 3342804A JP 34280491 A JP34280491 A JP 34280491A JP H05175676 A JPH05175676 A JP H05175676A
- Authority
- JP
- Japan
- Prior art keywords
- chassis
- housing
- cable
- cables
- electronic device
- 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.)
- Granted
Links
- 238000012423 maintenance Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内部に電子機器が収納
された複数個のシャーシを、一つの筐体内に当該筐体の
正面側および背面側の両方に実装して成る電子機器装置
に係り、特に筐体へのシャーシの実装密度の向上、なら
びに電子機器保守・ケーブル接続の作業効率の向上を図
り得るようにした電子機器装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic equipment device in which a plurality of chassis in which electronic equipment is housed are mounted in one housing on both the front and back sides of the housing. In particular, the present invention relates to an electronic device apparatus capable of improving the mounting density of chassis in a housing and improving the work efficiency of electronic device maintenance and cable connection.
【０００２】[0002]
【従来の技術】一般に、電子機器は、シャーシの内部に
収納され、さらにそのシャーシが一つの筐体内に複数個
実装されている。図４はこの種の従来の電子機器装置の
構成例を示す図であり、図４（ａ）はその斜視図、図４
（ｂ）は図４（ａ）のＡ−Ａ断面図をそれぞれ示してい
る。2. Description of the Related Art In general, electronic equipment is housed inside a chassis, and a plurality of such chassis are mounted in one housing. FIG. 4 is a diagram showing a configuration example of a conventional electronic device of this type, and FIG. 4A is a perspective view thereof.
4B is a cross-sectional view taken along the line AA of FIG.
【０００３】図４において、電子機器１を収納するシャ
ーシ２は、内部に収納された電子機器１の点検、出入れ
等の保守作業を、シャーシ２の正面側から行ない、一方
電源，信号ケーブル等のケーブル３の接続・配線作業
は、シャーシ２の背面側から行なうようになっている。
これは、複数個のシャーシ２を一つの筐体４内に実装し
た場合に、上部に実装されたシャーシ２に接続されたケ
ーブル３が、下部に実装されたシャーシ２の保守作業の
妨げとならないように、電子機器１を保守する面と、ケ
ーブル３を接続・配線する面とを分離するためである。In FIG. 4, a chassis 2 for accommodating an electronic device 1 carries out maintenance work such as inspection and withdrawal of the electronic device 1 accommodated therein from the front side of the chassis 2, while a power source, a signal cable, etc. The connection / wiring work of the cable 3 is performed from the rear side of the chassis 2.
This means that when a plurality of chassis 2 are mounted in one housing 4, the cable 3 connected to the chassis 2 mounted on the upper side does not hinder the maintenance work of the chassis 2 mounted on the lower side. Thus, the surface for maintaining the electronic device 1 and the surface for connecting / wiring the cable 3 are separated.
【０００４】しかしながら、このような構成の電子機器
装置では、筐体４へのシャーシ２の実装数をそれ程多く
することができず、筐体４へのシャーシ２の実装密度が
低いものとなっている。However, in the electronic device having such a structure, the number of chassis 2 mounted on the housing 4 cannot be increased so much, and the mounting density of the chassis 2 on the housing 4 is low. There is.
【０００５】そこで、最近では、一つの筐体４に、より
多くのシャーシ２を実装するために、図５の断面図に示
すように、電子機器が収納された複数個のシャーシ２
を、一つの筐体４内にその筐体４の正面側および背面側
の両方に実装した構成の電子機器装置が提案されてきて
いる。Therefore, recently, in order to mount more chassis 2 in one housing 4, as shown in the cross-sectional view of FIG.
There has been proposed an electronic device apparatus having a structure in which a single housing 4 is mounted on both the front side and the back side of the housing 4.
【０００６】しかしながら、このような構成の電子機器
装置では、各シャーシ２のケーブル３は、正面側のシャ
ーシ２と背面側のシャーシ２との間に挟まれてしまい、
ケーブル３の接続・配線等の作業が不可能となっしま
う。このため、実際には、背面側に実装するシャーシ２
の位置や数等に制限が加えられてしまい、筐体４へのシ
ャーシ２の実装密度をそれ程高めることはできない。However, in the electronic device having such a structure, the cable 3 of each chassis 2 is sandwiched between the front chassis 2 and the rear chassis 2,
The work of connecting and wiring the cable 3 becomes impossible. Therefore, in practice, the chassis 2 mounted on the rear side
Since the position, the number, etc. are restricted, the mounting density of the chassis 2 on the housing 4 cannot be increased so much.
【０００７】一方、このような制限を回避するために、
ケーブル３の接続をシャーシ２の正面側で行なうように
した場合、そのままだと、隣接するシャーシ２の保守作
業を妨げるため、図６の断面図に示すように、隣接する
シャーシ２との間に、ケーブル３をシャーシ２正面側か
ら背面側へ回避させる空間５を設けた構成の電子機器装
置が提案されてきている。On the other hand, in order to avoid such a limitation,
If the cable 3 is connected to the front side of the chassis 2, if it is left unattended, the maintenance work of the adjacent chassis 2 will be hindered. Therefore, as shown in the sectional view of FIG. There has been proposed an electronic device apparatus having a space 5 for avoiding the cable 3 from the front side to the rear side of the chassis 2.
【０００８】しかしながら、このような構成の電子機器
装置では、上部に実装されたシャーシ２に接続されたケ
ーブル３が、下部に実装されたシャーシ２の保守作業の
妨げとなるため、シャーシ２の保守作業を行なう上での
作業効率が低下するという問題がある。However, in the electronic device having such a configuration, the cable 3 connected to the chassis 2 mounted on the upper portion interferes with the maintenance work of the chassis 2 mounted on the lower portion, so that maintenance of the chassis 2 is performed. There is a problem that work efficiency in performing work is reduced.
【０００９】[0009]
【発明が解決しょうとする問題点】以上のように、従来
の構成の電子機器装置においては、筐体の正面側および
背面側の両方にシャーシを実装した場合に、実装するシ
ャーシの位置や個数に制限が加わる等、筐体へのシャー
シの実装密度を高めることができないばかりでなく、電
子機器保守とケーブル接続の作業効率が低いという問題
があった。As described above, in the electronic device having the conventional configuration, when the chassis is mounted on both the front side and the rear side of the housing, the position and the number of chassis to be mounted are set. However, there is a problem that not only the mounting density of the chassis in the housing cannot be increased, but also the work efficiency of the electronic device maintenance and the cable connection is low.
【００１０】本発明の目的は、筐体へのシャーシの実装
密度の向上、ならびに電子機器保守・ケーブル接続の作
業効率の向上を図ることが可能な極めて信頼性の高い電
子機器装置を提供することにある。An object of the present invention is to provide an extremely reliable electronic equipment device capable of improving the mounting density of chassis in a housing and improving the work efficiency of electronic equipment maintenance and cable connection. It is in.
【００１１】[0011]
【課題を解決するための手段】上記の目的を達成するた
めに本発明では、内部に電子機器が収納された複数個の
シャーシを、一つの筐体内に当該筐体の正面側および背
面側の両方に実装して成る電子機器装置において、上記
シャーシとして、内部に収納された電子機器の保守、お
よび電源，信号ケーブル等のケーブルの接続をシャーシ
本体の正面側から行なう構造のシャーシを用い、かつ各
シャーシのケーブルを、シャーシの側面と筐体の側面と
の間に形成される空間部に配線するようにしている。こ
こで、特にシャーシの側面に、ケーブルを空間部へ導入
する切欠きを設けるようにしている。In order to achieve the above object, according to the present invention, a plurality of chassis in which electronic devices are housed are provided in one housing, and the chassis is provided on the front side and the back side of the housing. In an electronic equipment device mounted on both, as the chassis, a chassis having a structure in which maintenance of electronic equipment housed inside and connection of cables such as a power supply and a signal cable is performed from the front side of the chassis body, and The cables of each chassis are arranged in a space formed between the side surface of the chassis and the side surface of the housing. Here, in particular, a notch for introducing the cable into the space is provided on the side surface of the chassis.
【００１２】[0012]
【作用】従って、本発明の電子機器装置においては、内
部の電子機器の保守、および電源，信号ケーブル等のケ
ーブルの接続をシャーシ本体の正面側から行なう構造の
シャーシを、一つの筐体内にその正面側および背面側の
両方に実装することにより、筐体へのシャーシの実装数
を多くすることが可能となるため、筐体へのシャーシの
実装密度を向上することができる。Therefore, in the electronic equipment of the present invention, the chassis having a structure in which the maintenance of the internal electronic equipment and the connection of cables such as the power supply and the signal cable are performed from the front side of the chassis body is provided in one housing. By mounting on both the front side and the back side, it is possible to increase the number of chassis to be mounted on the housing, so that the mounting density of the chassis on the housing can be improved.
【００１３】また、各シャーシのケーブルを、シャーシ
側面と筐体側面との間に形成される空間部に配線するこ
とにより、上部に実装されたシャーシのケーブルが、下
部に実装されたシャーシの保守作業を妨げることなく筐
体内に配線されるため、電子機器保守、およびケーブル
接続の作業効率を向上することができる。By routing the cables of each chassis in the space formed between the side surface of the chassis and the side surface of the chassis, the cables of the chassis mounted on the upper side can be maintained for the chassis mounted on the lower side. Since the wiring is provided in the housing without hindering the work, the work efficiency of the electronic device maintenance and the cable connection can be improved.
【００１４】[0014]
【実施例】以下、本発明の一実施例について図面を参照
して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.
【００１５】図１は、本発明による電子機器装置の構成
例を示す斜視図である。図１において、内部に電子機器
１１が収納された複数個のシャーシ１２を、一つの筐体
１３内に、この筐体１３の正面側および背面側の両方に
図示のように実装している。FIG. 1 is a perspective view showing a configuration example of an electronic device apparatus according to the present invention. In FIG. 1, a plurality of chassis 12 in which electronic devices 11 are housed are mounted in one housing 13 on both the front side and the back side of the housing 13 as illustrated.
【００１６】また、上記シャーシ１２としては、図２に
その斜視図を示すように、内部に収納された電子機器１
１の保守、および電源，信号ケーブル等のケーブル１４
の接続を、シャーシ１２本体の正面側から行なえる構造
のシャーシを用いている。As the chassis 12, as shown in the perspective view of FIG.
1 maintenance and cable 14 such as power supply and signal cable
The chassis of the structure which can be connected from the front side of the chassis 12 main body is used.
【００１７】さらに、このような各シャーシ１２のケー
ブル１４を、図３（ａ）にその正面図、図３（ｂ）に図
３（ａ）のＡ−Ａ断面図をそれぞれ示すように、シャー
シ１２の側面１２ａと筐体１３の側面１３ａとの間に形
成される空間部１５に、シャーシ側面１２ａに設けた切
欠き１２ｂを介して配線している。Further, the cable 14 of each chassis 12 as described above is shown in FIG. 3A as a front view thereof and in FIG. 3B as a sectional view taken along the line AA of FIG. 3A. The space 15 formed between the side surface 12a of the chassis 12 and the side surface 13a of the housing 13 is wired through the notch 12b provided on the chassis side surface 12a.
【００１８】次に、以上のように構成した本実施例の電
子機器装置においては、内部の電子機器１１の保守、お
よび電源，信号ケーブル等のケーブル１４の接続を、シ
ャーシ本体の正面側から行なえる構造のシャーシ１２
を、一つの筐体１３内にその正面側および背面側の両方
に実装していることにより、筐体１３へのシャーシ１２
の実装数を多くすることが可能となるため、筐体１３へ
のシャーシ１２の実装密度を向上することができる。Next, in the electronic device apparatus of the present embodiment having the above-described configuration, maintenance of the internal electronic device 11 and connection of the cables 14 such as the power supply and signal cable can be performed from the front side of the chassis body. Chassis 12
Are mounted in one housing 13 on both the front side and the back side thereof, so that the chassis 12 can be mounted on the housing 13.
Since it is possible to increase the number of mounted chassis 12, the mounting density of the chassis 12 in the housing 13 can be improved.
【００１９】また、各シャーシ１２のケーブル１４を、
シャーシ１２の側面１２ａと筐体１３の側面１３ａとの
間に形成される空間部１５に配線することにより、上部
に実装されたシャーシ１２のケーブル１４が、下部に実
装されたシャーシ１２の保守作業を妨げることなく筐体
１３内に配線されるため、電子機器１１の保守、および
ケーブル１４の接続の作業効率を向上することができ
る。In addition, the cable 14 of each chassis 12 is
By wiring in the space 15 formed between the side surface 12a of the chassis 12 and the side surface 13a of the housing 13, the cable 14 of the chassis 12 mounted on the upper side is maintained for the chassis 12 mounted on the lower side. Since the wiring is provided in the housing 13 without hindering the operation, the work efficiency of the maintenance of the electronic device 11 and the connection of the cable 14 can be improved.
【００２０】上述したように、本実施例の電子機器装置
では、内部に収納された電子機器１１の保守、および電
源，信号ケーブル等のケーブル１４の接続を、シャーシ
１２本体の正面側から行なえる構造のシャーシを、一つ
の筐体１３内に当該筐体１３の正面側および背面側の両
方に実装し、さらに各シャーシ１２のケーブル１４を、
シャーシ１２の側面１２ａと筐体１３の側面１３ａとの
間に形成される空間部１５に、シャーシ側面１２ａに設
けた切欠き１２ｂを介して配線する構成としたものであ
る。従って、次のような効果が得られるものである。As described above, in the electronic device apparatus of this embodiment, maintenance of the electronic device 11 housed inside and connection of the cables 14 such as the power supply and signal cables can be performed from the front side of the chassis 12 main body. The chassis having the structure is mounted in one housing 13 on both the front side and the back side of the housing 13, and the cables 14 of each chassis 12 are
The wiring is provided in the space 15 formed between the side surface 12a of the chassis 12 and the side surface 13a of the housing 13 via the notch 12b provided in the chassis side surface 12a. Therefore, the following effects can be obtained.
【００２１】（ａ）内部の電子機器１１の保守、および
電源，信号ケーブル等のケーブル１４の接続を、シャー
シ本体の正面側から行なえる構造のシャーシ１２を、一
つの筐体１３内にその正面側および背面側の両方に実装
しているので、筐体１３へのシャーシ１２の実装数を多
くでき、筐体１３へのシャーシ１２の実装密度を向上す
ることが可能となる。(A) Maintenance of the internal electronic equipment 11 and connection of cables 14 such as power supply and signal cables are carried out from the front side of the chassis body. Since it is mounted on both the side and the back side, the number of chassis 12 mounted on the housing 13 can be increased, and the mounting density of the chassis 12 on the housing 13 can be improved.
【００２２】（ｂ）筐体１３内にシャーシ１２を実装す
る際に、シャーシ１２の側面１２ａと筐体１３の側面１
３ａとの間に必然的に形成される空間部１５を利用し
て、各シャーシ１２のケーブル１４を配線しているの
で、上部に実装されたシャーシ１２のケーブル１４が、
下部に実装されたシャーシ１２の保守作業を妨げること
なく筐体１３内に配線され、電子機器１１の保守、およ
びケーブル１４の接続の作業効率を向上することが可能
となる。尚、本発明は上記実施例に限定されるものでは
なく、次のようにしても同様に実施できるものである。(B) When mounting the chassis 12 in the housing 13, the side surface 12 a of the chassis 12 and the side surface 1 of the housing 13
The cables 14 of each chassis 12 are laid using the space 15 that is necessarily formed between the cables 14 of the chassis 12 and 3a.
The chassis 12 mounted on the lower portion is wired in the housing 13 without hindering the maintenance work, and the work efficiency of the maintenance of the electronic device 11 and the connection of the cable 14 can be improved. The present invention is not limited to the above embodiment, but can be implemented in the same manner as described below.
【００２３】上記実施例では、各シャーシ１２のケーブ
ル１４を、シャーシ側面１２ａと筐体側面１３ａとの間
の空間部１５に導入するために、シャーシ側面１２ａに
切欠き１２ｂを設ける場合について説明したが、これに
限らずシャーシ側面１２ａにケーブル１４貫通可能な穴
を設け、この穴を通して各シャーシ１２のケーブル１４
を、シャーシ側面１２ａと筐体側面１３ａとの間の空間
部１５に導入する較正とすることも可能である。In the above embodiment, the case where the notch 12b is provided on the chassis side surface 12a in order to introduce the cable 14 of each chassis 12 into the space 15 between the chassis side surface 12a and the housing side surface 13a has been described. However, not limited to this, a hole through which the cable 14 can penetrate is provided on the chassis side surface 12a, and the cable 14 of each chassis 12 is passed through this hole.
Can be introduced into the space portion 15 between the chassis side surface 12a and the housing side surface 13a.
【００２４】[0024]
【発明の効果】以上説明したように本発明によれば、内
部に電子機器が収納された複数個のシャーシを、一つの
筐体内に当該筐体の正面側および背面側の両方に実装し
て成る電子機器装置において、上記シャーシとして、内
部に収納された電子機器の保守、および電源，信号ケー
ブル等のケーブルの接続をシャーシ本体の正面側から行
なう構造のシャーシを用い、かつ各シャーシのケーブル
を、シャーシの側面と筐体の側面との間に形成される空
間部に配線するようにしたので、筐体へのシャーシの実
装密度の向上、ならびに電子機器保守・ケーブル接続の
作業効率の向上を図ることが可能な極めて信頼性の高い
電子機器装置が提供できる。As described above, according to the present invention, a plurality of chassis in which electronic devices are housed are mounted in one housing on both the front and back sides of the housing. In the electronic equipment device, a chassis having a structure in which maintenance of electronic equipment housed inside and connection of cables such as power supply and signal cables are performed from the front side of the chassis main body is used as the chassis, and the cables of each chassis are Since the wiring is made in the space formed between the side surface of the chassis and the side surface of the housing, it is possible to improve the mounting density of the chassis in the housing and the work efficiency of electronic device maintenance and cable connection. It is possible to provide an extremely reliable electronic device that can be achieved.
【図１】本発明による電子機器装置の一実施例を示す斜
視図。FIG. 1 is a perspective view showing an embodiment of an electronic device apparatus according to the present invention.
【図２】同実施例におけるシャーシの構成例を示す斜視
図。FIG. 2 is a perspective view showing a configuration example of a chassis in the embodiment.
【図３】同実施例におけるシャーシのケーブルの配線構
成例を示す概要図。FIG. 3 is a schematic diagram showing an example of a cable wiring configuration of a chassis in the embodiment.
【図４】従来の電子機器装置の一構成例を示す概要図。FIG. 4 is a schematic diagram showing a configuration example of a conventional electronic device.
【図５】従来の電子機器装置の他の構成例を示す断面
図。FIG. 5 is a sectional view showing another configuration example of a conventional electronic device.
【図６】従来の電子機器装置の他の構成例を示す断面
図。FIG. 6 is a cross-sectional view showing another configuration example of a conventional electronic device.
１１…電子機器、１２…シャーシ、１２ａ…シャーシ側
面、１２ｂ…切欠き、１３…筐体、１４…ケーブル、１
５…空間部。11 ... Electronic equipment, 12 ... Chassis, 12a ... Chassis side surface, 12b ... Notch, 13 ... Housing, 14 ... Cable, 1
5 ... Space section.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０５Ｋ 7/02 Ｒ 7301−4Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location H05K 7/02 R 7301-4E
Claims (2)
ャーシを、一つの筐体内に当該筐体の正面側および背面
側の両方に実装して成る電子機器装置において、 前記シャーシとして、内部に収納された電子機器の保
守、および電源，信号ケーブル等のケーブルの接続をシ
ャーシ本体の正面側から行なう構造のシャーシを用い、 かつ前記各シャーシのケーブルを、前記シャーシの側面
と前記筐体の側面との間に形成される空間部に配線する
ようにしたことを特徴とする電子機器装置。1. An electronic device apparatus in which a plurality of chassis in which electronic devices are housed are mounted on a front side and a rear side of the housing in one housing, wherein the chassis is an internal Use a chassis that has a structure in which maintenance of electronic devices housed inside and connection of cables such as power supply and signal cables are performed from the front side of the chassis body, and connect the cables of each chassis to the side surface of the chassis and the chassis. An electronic apparatus device, wherein wiring is provided in a space formed between the side surface and the side surface.
空間部へ導入する切欠きを設けるようにしたことを特徴
とする請求項１に記載の電子機器装置。2. The electronic device apparatus according to claim 1, wherein a notch for introducing the cable into the space is provided on a side surface of the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3342804A JP2829172B2 (en) | 1991-12-25 | 1991-12-25 | Electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3342804A JP2829172B2 (en) | 1991-12-25 | 1991-12-25 | Electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05175676A true JPH05175676A (en) | 1993-07-13 |
| JP2829172B2 JP2829172B2 (en) | 1998-11-25 |
Family
ID=18356628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3342804A Expired - Fee Related JP2829172B2 (en) | 1991-12-25 | 1991-12-25 | Electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2829172B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004349656A (en) * | 2003-05-26 | 2004-12-09 | Aiphone Co Ltd | Locker for housing electronic apparatus |
| WO2008039636A1 (en) * | 2006-09-28 | 2008-04-03 | Emc Corporation | Back-to-back data storage system |
| GB2476932A (en) * | 2010-01-13 | 2011-07-20 | John Martin Kirk | Trunking for Mounting One Or More Computer Devices |
| FR3016977A1 (en) * | 2014-01-30 | 2015-07-31 | France Etat | BAY BLOCK AND BAY |
| US10155919B2 (en) | 2008-07-30 | 2018-12-18 | The Procter & Gamble Company | Delivery particle |
| CN112286303A (en) * | 2020-11-02 | 2021-01-29 | 安徽研实科技有限公司 | Maintenance device based on historical data equipment |
-
1991
- 1991-12-25 JP JP3342804A patent/JP2829172B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004349656A (en) * | 2003-05-26 | 2004-12-09 | Aiphone Co Ltd | Locker for housing electronic apparatus |
| WO2008039636A1 (en) * | 2006-09-28 | 2008-04-03 | Emc Corporation | Back-to-back data storage system |
| US7515427B2 (en) | 2006-09-28 | 2009-04-07 | Emc Corporation | Back-to-back data storage system |
| US10155919B2 (en) | 2008-07-30 | 2018-12-18 | The Procter & Gamble Company | Delivery particle |
| GB2476932A (en) * | 2010-01-13 | 2011-07-20 | John Martin Kirk | Trunking for Mounting One Or More Computer Devices |
| FR3016977A1 (en) * | 2014-01-30 | 2015-07-31 | France Etat | BAY BLOCK AND BAY |
| CN112286303A (en) * | 2020-11-02 | 2021-01-29 | 安徽研实科技有限公司 | Maintenance device based on historical data equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2829172B2 (en) | 1998-11-25 |
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