EP0029570B1 - Sound absorbent module in an appliance - Google Patents

Sound absorbent module in an appliance Download PDF

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Publication number
EP0029570B1
EP0029570B1 EP80107130A EP80107130A EP0029570B1 EP 0029570 B1 EP0029570 B1 EP 0029570B1 EP 80107130 A EP80107130 A EP 80107130A EP 80107130 A EP80107130 A EP 80107130A EP 0029570 B1 EP0029570 B1 EP 0029570B1
Authority
EP
European Patent Office
Prior art keywords
noise
block
strip
printer
housing
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
Application number
EP80107130A
Other languages
German (de)
French (fr)
Other versions
EP0029570A1 (en
Inventor
Wilhelm Reitner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6086630&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0029570(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80107130T priority Critical patent/ATE4182T1/en
Publication of EP0029570A1 publication Critical patent/EP0029570A1/en
Application granted granted Critical
Publication of EP0029570B1 publication Critical patent/EP0029570B1/en
Expired legal-status Critical Current

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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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/10—Sound-deadening devices embodied in machines
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/08—Bar or like line-size platens

Definitions

  • the invention relates to a noise-damped structural unit of a device, in particular the pressure bar of a mechanical printer, on which noise-causing mechanical forces act.
  • Devices such as mechanical printers, typewriters, etc., which are used in office operations, must be silenced to reduce the environmental impact. For this, they are e.g. B. arranged in the noise-damped housing.
  • Such solutions are very complex and are not very suitable for noise reduction for devices in which e.g. Paper sheets or paper webs are led out of the device. It is also possible that only the parts of the device from which the unwanted noise emanates are damped by means of between the device part to be damped and the stationary device frame between switched damping elements. The result is that the wear resistance of these parts is reduced.
  • the object on which the invention is based is to implement a noise-damped structural unit of a device, in particular the pressure bar of a mechanical printer, on which mechanical forces which cause noise are to be carried out in such a way that the wear resistance is maintained with high noise damping.
  • the structural unit consists of a damping material arranged in a carrier block and a metal strip which is arranged on the damping material and is not directly connected to the carrier block and on which the mechanical forces act.
  • the support block can expediently be attached to the device housing. It must be ensured that the metal band is not connected directly to the device housing.
  • the metal strip is expediently made of steel in order to keep the wear as low as possible.
  • the advantage of the invention is, in particular, that the noise reduction and wear resistance of the assembly are achieved with the least cost, with only a very small amount of airborne noise being emitted to the environment and a very low structure-borne noise to the device housing, which, on the other hand, ensures the wear resistance and rigidity of the assembly is.
  • the sound emission to the environment is due to the damping material, e.g. Prevents rubber on which the metal band is arranged.
  • the wear resistance is achieved with the help of the metal band arranged on the damping material.
  • the pressure bar of a mechanical printer, e.g. a dot matrix printer used.
  • the pressure beam consists of a damping material 10 which e.g. consists of good damping rubber or plastic, and a metal band 12 arranged on the damping material 10, e.g. consists of a thin hardened steel band.
  • the steel strip 12 can be vulcanized onto the damping material 10.
  • the assembly 10, 12 is on a support block 14 which, for. B. consists of aluminum, arranged.
  • the support block 14 can contain a groove 16 into which the structural unit 10, 12 is inserted.
  • the noise damping is achieved with the aid of the damping material 10, by means of which the transmission of the sound vibrations to the support block 14 is largely prevented. It also prevents the steel strip from vibrating itself and thus making noise in the air.
  • Fig. 2 shows the arrangement from the front.
  • the support block 14 can be attached to a part of the device housing 18 at both ends. The figure only shows that one end is attached to the device housing 18.
  • the carrier block 14 is correspondingly arranged on the other end of the device housing. While the damping material 10 is led to the device housing 18, this is not the case with the metal band 12. Here there is an intermediate space 20 between the device housing 18 and the end of the steel strip 12, by means of which it is prevented that sound vibrations can reach the device housing 18 from the metal strip 12.

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Vibration Prevention Devices (AREA)
  • Handling Of Sheets (AREA)

Abstract

The impact beam of a mechanical printer is constructed for noise dampening and yet exhibits a high resistance to wear. The beam unit comprises a block of dampening material which is held along a carrier support wall. A strip of metal is arranged along an exterior, generally flat surface of the block so as to be completely separated from adjacent surfaces of the support wall by a region of block material. The metal strip is arranged to receive the impact of type bars and other noise-inducing mechanical force elements of the printer. The noise emanating from such impacts are dampened as they travel through the block material. There is no direct connection between the metal strip and the housing of the mechanical printer in order to prevent direct transmission of noise vibrations from the strip to the housing.

Description

Die Erfindung bezieht sich auf eine lärmgedämpfte Baueinheit eines Gerätes, insbesondere des Druckbalkens eines mechanischen Druckers, auf die lärmverursachende mechanische Kräfte einwirken.The invention relates to a noise-damped structural unit of a device, in particular the pressure bar of a mechanical printer, on which noise-causing mechanical forces act.

Geräte wie mechanische Drucker, Schreibmaschinen usw., die im Bürobetrieb verwendet werden, müssen zur Verringerung der Umweltbelastung lärmgedämpft werden. Dazu werden sie z. B. im Lärmgedämpfte Gehäuse angeordnet. Derartige Lösungen sind sehr aufwendig und sind für die Lärmbedämpfung für solche Geräte wenig geeignet, bei denen z.B. Papierblätter oder Papierbahnen aus dem Gerät herausgeführt werden. Es ist weiterhin möglich, dass nur die Teile des Gerätes, von denen der unerwünschte Lärm ausgeht, mittels zwischen dem zu bedämpfenden Geräteteil und dem ortsfesten Gerätegestell zwischen geschalteter Dämpfungselemente bedämpft werden. Die Folge ist, dass die Verschleissfestigkeit dieser Teile gemindert wird.Devices such as mechanical printers, typewriters, etc., which are used in office operations, must be silenced to reduce the environmental impact. For this, they are e.g. B. arranged in the noise-damped housing. Such solutions are very complex and are not very suitable for noise reduction for devices in which e.g. Paper sheets or paper webs are led out of the device. It is also possible that only the parts of the device from which the unwanted noise emanates are damped by means of between the device part to be damped and the stationary device frame between switched damping elements. The result is that the wear resistance of these parts is reduced.

Die der Erfindung zugrunde liegende Aufgabe besteht darin, eine lärmgedämpfte Baueinheit eines Gerätes, insbesondere des Druckbalkens eines mechanischen Druckers, auf die lärmverursachende mechanische Kräfte einwirken, derart auszuführen, dass bei grosser Lärmbedämpfung die Verschleissfestigkeit erhalten bleibt. Diese Aufgabe wird dadurch gelöst, dass die Baueinheit aus einem in einem Trägerblock angeordneten Dämpfungsmaterial und einem auf dem Dämpfungsmaterial angeordneten nicht mit dem Trägerblock direkt in Verbindung stehenden Metallband besteht, auf das die mechanischen Kräfte einwirken.The object on which the invention is based is to implement a noise-damped structural unit of a device, in particular the pressure bar of a mechanical printer, on which mechanical forces which cause noise are to be carried out in such a way that the wear resistance is maintained with high noise damping. This object is achieved in that the structural unit consists of a damping material arranged in a carrier block and a metal strip which is arranged on the damping material and is not directly connected to the carrier block and on which the mechanical forces act.

Der Trägerblock kann zweckmässigerweise an dem Gerätegehäuse befestigt sein. Dabei muss dafür gesorgt werden, dass das Metallband nicht mit dem Gerätegehäuse direkt verbunden wird.The support block can expediently be attached to the device housing. It must be ensured that the metal band is not connected directly to the device housing.

Bei Druckern, z.B. Nadeldruckern, besteht das Metallband zweckmässigerweise aus Stahl, um den Verschleiss möglichst gering zu halten.For printers, e.g. In the case of dot matrix printers, the metal strip is expediently made of steel in order to keep the wear as low as possible.

Der Vorteil der Erfindung besteht insbesondere darin, dass die Lärmdämpfung und Verschleissfestigkeit der Baueinheit mit geringstem preislichen Aufwand erreicht wird, wobei nur ein sehr geringer Luftschall an die Umgebung und ein sehr geringer Körperschall an das Gerätegehäuse abgegeben wird, die Verschleissfestigkeit und Steifigkeit der Baueinheit dagegen gewährleistet ist. Die Schallabgabe an die Umgebung wird durch das Dämpfungsmaterial, z.B. Gummi, verhindert, auf dem das Metallband angeordnet ist. Die Verschleissfestigkeit wird mit Hilfe des auf dem Dämpfungsmaterial angeordneten Metallbandes erreicht.The advantage of the invention is, in particular, that the noise reduction and wear resistance of the assembly are achieved with the least cost, with only a very small amount of airborne noise being emitted to the environment and a very low structure-borne noise to the device housing, which, on the other hand, ensures the wear resistance and rigidity of the assembly is. The sound emission to the environment is due to the damping material, e.g. Prevents rubber on which the metal band is arranged. The wear resistance is achieved with the help of the metal band arranged on the damping material.

Anhand eines Ausführungsbeispiels wird die Erfindung weiter erläutert. Es zeigen:

  • Fig. 1 einen Schnitt durch die Baueinheit mit Trägerblock, und
  • Fig. 2 ein Teil der Vorderansicht der Baueinheit mit Trägerblock.
The invention is further explained using an exemplary embodiment. Show it:
  • Fig. 1 shows a section through the assembly with support block, and
  • Fig. 2 shows a part of the front view of the assembly with support block.

Im Ausführungsbeispiel wird als Baueinheit der Druckbalken eines mechanischen Druckers, z.B. eines Nadeldruckers, verwendet. Der Druckbalken besteht dabei aus einem Dämpfungsmaterial 10, das z.B. aus gut dämpfendem Gummi oder aus Kunststoff besteht, und aus einem auf dem Dämpfungsmaterial 10 angeordneten Metallband 12, das z.B. aus einem dünnen gehärteten Stahlband besteht. Das Stahlband 12 kann auf dem Dämpfungsmaterial 10 aufvulkanisiert sein. Die Baueinheit 10,12 ist an einem Trägerblock 14, der z. B. aus Aluminium besteht, angeordnet. Dazu kann der Trägerblock 14 eine Nut 16 enthalten, in die die Baueinheit 10, 12 eingefügt ist.In the exemplary embodiment, the pressure bar of a mechanical printer, e.g. a dot matrix printer used. The pressure beam consists of a damping material 10 which e.g. consists of good damping rubber or plastic, and a metal band 12 arranged on the damping material 10, e.g. consists of a thin hardened steel band. The steel strip 12 can be vulcanized onto the damping material 10. The assembly 10, 12 is on a support block 14 which, for. B. consists of aluminum, arranged. For this purpose, the support block 14 can contain a groove 16 into which the structural unit 10, 12 is inserted.

Auf das Stahlband 12 des Druckbalkens 10,12 wirken dann die mechanischen Kräfte ein, durch die der unerwünschte Lärm erzeugt wird. Bei einem Nadeldrucker wirken auf das Stahlband 12 z.B. die Nadeln des Druckkopfes ein. Die Lärmdämpfung wird mit Hilfe des Dämpfungsmaterials 10 erreicht, durch das die Übertragung der Schallschwingungen auf den Trägerblock 14 weitgehend unterbunden wird. Weiterhin wird verhindert, dass das Stahlband selbst schwingen kann und damit an die Luft Lärm abgeben kann.The mechanical forces, by which the undesired noise is generated, then act on the steel strip 12 of the pressure beam 10, 12. In the case of a dot matrix printer, e.g. the printhead needles. The noise damping is achieved with the aid of the damping material 10, by means of which the transmission of the sound vibrations to the support block 14 is largely prevented. It also prevents the steel strip from vibrating itself and thus making noise in the air.

Die Fig. 2 zeigt die Anordnung von der Vorderseite. Der Trägerblock 14 kann an seinen beiden Enden an einem Teil des Gerätegehäuses 18 befestigt sein. In Figur ist nur dargestellt, dass das eine Ende am Gerätegehäuse 18 befestigt ist. Der Trägerblock 14 ist auf seinem anderen Ende entsprechend an dem Gerätegehäuse angeordnet. Während das Dämpfungsmaterial 10 bis zum Gerätegehäuse 18 geführt ist, ist dies beim Metallband 12 nicht der Fall. Hier besteht zwischen dem Gerätegehäuse 18 und dem Ende des Stahlbandes 12 ein Zwischenraum 20, durch den verhindert wird, dass Schallschwingungen vom Metallband 12 zum Gerätegehäuse 18 gelangen können.Fig. 2 shows the arrangement from the front. The support block 14 can be attached to a part of the device housing 18 at both ends. The figure only shows that one end is attached to the device housing 18. The carrier block 14 is correspondingly arranged on the other end of the device housing. While the damping material 10 is led to the device housing 18, this is not the case with the metal band 12. Here there is an intermediate space 20 between the device housing 18 and the end of the steel strip 12, by means of which it is prevented that sound vibrations can reach the device housing 18 from the metal strip 12.

Claims (3)

1. A noise-damped structural unit of an apparatus, in particular of the pressure bar of a mechanical printer, on which noise-producing mechanical forces act, characterised in that the structural unit consists of a damping material (10) arranged in a carrier block (14), and of a metal strip (12) which is arranged on the damping material (10) and is not directly connected to the carrier block (14), and on which the mechanical forces act.
2. A structural unit as claimed in claim 1, characterised in that the carrier block (14) is secured to the housing (18) of the apparatus, and that the metal strip (12) is not directly connected to the housing (18) of the apparatus.
3. A structural unit as claimed in claim 1 or 2, characterised in that the metal strip (12) consists of steel.
EP80107130A 1979-11-22 1980-11-17 Sound absorbent module in an appliance Expired EP0029570B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107130T ATE4182T1 (en) 1979-11-22 1980-11-17 NOISE REDUCED UNIT OF A DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792947111 DE2947111A1 (en) 1979-11-22 1979-11-22 NOISE-DAMPED ASSEMBLY OF A DEVICE
DE2947111 1979-11-22

Publications (2)

Publication Number Publication Date
EP0029570A1 EP0029570A1 (en) 1981-06-03
EP0029570B1 true EP0029570B1 (en) 1983-07-20

Family

ID=6086630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107130A Expired EP0029570B1 (en) 1979-11-22 1980-11-17 Sound absorbent module in an appliance

Country Status (4)

Country Link
US (1) US4318452A (en)
EP (1) EP0029570B1 (en)
AT (1) ATE4182T1 (en)
DE (1) DE2947111A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597682A (en) * 1984-11-13 1986-07-01 Reflective Technology, Inc. Impact print bar assembly
DE3538762A1 (en) * 1985-10-31 1987-05-14 Mannesmann Ag PRINTER, IN PARTICULAR. NEEDLE DESIGN MATRIX PRINTER
US4929106A (en) * 1988-10-12 1990-05-29 Pitney Bowes Inc. Platen module
DE3940776C1 (en) * 1989-12-06 1991-09-12 Mannesmann Ag, 4000 Duesseldorf, De
IT1239396B (en) * 1990-03-20 1993-10-20 Printax PORTABLE PRINTER EQUIPMENT
US5174671A (en) * 1991-10-28 1992-12-29 Smith Corona Corporation Printing mechanism with print hammer having noise dampener
IT1276494B1 (en) * 1995-07-12 1997-10-31 Olivetti & Co Spa IMPACT PRINTER WITH SIGNABLE CONTRAST BAR
JP2996918B2 (en) * 1996-06-18 2000-01-11 インターナショナル・ビジネス・マシーンズ・コーポレイション Platen and printing device
US6036380A (en) * 1997-02-20 2000-03-14 Encad, Inc. Printer having a plastic platen
US6244768B1 (en) * 1999-03-02 2001-06-12 Printronix, Inc. Resilient elastomeric line printer platen having outer layer of hard material
JP4756730B2 (en) * 2000-09-07 2011-08-24 東芝テック株式会社 Stamp stand support device
US6583803B2 (en) 2001-01-29 2003-06-24 Zih Corporation Thermal printer with sacrificial member
US7027077B2 (en) * 2003-02-24 2006-04-11 Polaroid Corporation Platen assembly for thermal printer
DE102005023379B4 (en) * 2005-05-17 2008-02-21 J. Eberspächer GmbH & Co. KG Needle printing device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1415844A (en) * 1921-09-03 1922-05-09 Mulock William Redford Noise-reducing typewriter platen
DE2437454B2 (en) * 1974-08-03 1976-12-23 Philips Patentverwaltung Gmbh, 2000 Hamburg PRINTING PLATFORM FOR PRINTING UNITS
JPS5395707A (en) * 1977-02-01 1978-08-22 Kokusai Denshin Denwa Co Ltd Impact receiving mechanism for typewriter
IT1091281B (en) * 1977-10-19 1985-07-06 Olivetti & Co Spa CONTRAST ORGAN FOR AN IMPACT PRINTER

Also Published As

Publication number Publication date
ATE4182T1 (en) 1983-08-15
DE2947111A1 (en) 1981-05-27
EP0029570A1 (en) 1981-06-03
US4318452A (en) 1982-03-09

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