The patent's assignee for patent number 8644541 is
News editors obtained the following quote from the background information supplied by the inventors: "Field of the Invention
"The present invention relates to a hearing apparatus with a housing, having a first opening and a second opening, and with a frame, in or on which a signal processing component is attached and which can be inserted into the first opening of the housing as far as an end position. Additionally the present invention relates to a method for installing a frame with a signal processing component in a housing of a hearing apparatus, having a first opening and a second opening, in that the frame is pushed into the first opening of the housing as far as an end position. The term 'hearing apparatus' here refers to any device triggering a hearing stimulus which can be worn in or on the ear, in particular a hearing aid, a headset, headphones, etc.
"Hearing aids are wearable hearing apparatuses used to assist the hard-of-hearing. To cope with the numerous individual requirements, different designs of hearing aids such as behind-the-ear hearing aids (BTE), hearing aids with an external receiver (RIC: receiver in the canal) and in-the-ear hearing aids (ITE), e.g. including concha hearing aids or canal hearing aids (ITE, CIC), are provided. The hearing aids listed by way of example are worn on the outer ear or in the auditory canal. Bone conduction hearing aids, implantable or vibrotactile hearing aids are however additionally available on the market. In these, damaged hearing is stimulated either mechanically or electrically.
"The general components of hearing aids are in principle an input converter, an amplifier and an output converter. The input converter is generally a sound receiver, e.g. a microphone, and/or an electromagnetic receiver, e.g. an induction coil. The output converter is usually implemented as an electroacoustic converter, e.g. a miniature loudspeaker, or as an electromechanical converter, e.g. a bone conduction receiver. The amplifier is normally integrated into a signal processing unit. This basic structure is illustrated in FIG. 1 using the example of a behind-the-ear hearing aid. In a hearing aid housing 1 for wearing behind the ear one or more microphones 2 are incorporated to receive sound from the environment. A signal processing unit 3, which is likewise integrated into the hearing aid housing 1, processes the microphone signals and amplifies them. The output signal from the signal processing unit 3 is transmitted to a loudspeaker or receiver 4, which emits an acoustic signal. The sound is if appropriate transmitted via a sound tube, which is fixed in the auditory canal using an otoplastic, to the eardrum of the wearer of the device. The hearing aid and in particular the signal processing unit 3 is supplied with energy by a battery 5 likewise integrated into the hearing aid housing 1.
"Hearing aids are sensitive to dust and water, which can penetrate into microphone openings. Hence the microphone inputs are in many cases protected by membranes. These membranes are generally welded onto the housing shell of the hearing aid.
"Housing shells are often shaped like a bottle. A frame is inserted into a bottle-shaped housing of this type, and supports a plurality of signal processing components such as microphones, amplifiers and receivers. Using this strategy of inserting a frame into a bottle-shaped housing it is not easy to create a soundproof connection between the frame and the housing shell in the region of the microphones. There is a particular need to prevent, for example, sound reaching the microphone(s) from the receiver via the inner chamber of the housing. A small gap between frame and housing would very probably lead to feedback or for example would impair the directionality of a microphone system."
As a supplement to the background information on this patent, NewsRx correspondents also obtained the inventors' summary information for this patent: "It is accordingly an object of the invention to provide a method of installing a signal processing component in a housing of a hearing apparatus and a hearing apparatus which overcome the above-mentioned disadvantages of the prior art methods and devices of this general type, in which a signal processing component attached to a frame can be suitably installed at an opening of a housing.
"According to the invention the object is achieved by a hearing apparatus with a housing, having a first opening and a second opening, and with a frame, in or on which a signal processing component is attached and which can be inserted into the first opening of the housing as far as an end position. A ramp is arranged in the housing which interacts with the frame such that the frame is also moved perpendicular to the direction of insertion toward the second opening during insertion into the housing along a direction of insertion only in one section as far as the end position, which is less than 30% of the insertion path from the first opening to the end position. The signal processing component is fixed in the end position in a soundproof manner in respect of the inner chamber of the housing at the second opening.
"Additionally inventively provided is a method for installing a frame with a signal processing component in a housing of a hearing apparatus, having a first opening and a second opening, by inserting the frame into the first opening of the housing as far as an end position. The frame also being moved perpendicular to the direction of insertion toward the second opening during insertion into the housing along a direction of insertion by a ramp in the housing only in one section as far as the end position, which is less than 30% of the insertion path from the first opening to the end position, the signal processing component being fixed in the end position in soundproof manner in respect of the inner chamber of the housing at the second opening.
"Advantageously a ramp is thus disposed in the housing, which deflects an insertion movement of the frame such that the insertion movement receives a movement component at the end of the insertion process which is perpendicular to the initial direction of insertion. As a result, in particular in the case of bottle-shaped housings, components can be positioned at locations in a way which would not be possible using a purely linear insertion movement.
"It is particularly advantageous if the signal processing component is fixed in the end position in a soundproof manner in respect of the inner chamber of the housing at the second opening. The soundproofing is here achieved in that the frame is pressed onto the housing in the region of the second opening by the movement component perpendicular to the direction of insertion. In this way acoustic feedback via the inner chamber of the housing can be prevented.
"The effect of the ramp relies on the fact that by using a lead angle not only is a movement along a direction of insertion 'translated' into a movement in a perpendicular direction to the direction of insertion, but an action of force along a direction of insertion is translated into an action of force in a perpendicular direction to the direction of insertion. Because of the lever principle the resultant normal force can be adjusted by the ratio of the two paths--insertion path and normal movement thereto--as a function of an insertion force. In other words, the smaller the lead angle or the flatter the ramp, the stronger the action of force and here the exerted pressure of the frame introduced into the housing onto an inner wall of the housing accommodating the frame.
"Preferably the section or the ramp is shorter than 10% of the insertion path. This has the advantage that the deflection of the insertion movement only takes place shortly before the end position of the frame.
"In an advantageous embodiment the ramp is implemented by means of a wedge that can be inserted into the housing. A solution such as this makes it easy to replace the wedge or the ramp. As a result, any fatigue in the material of the ramp during use or if the hearing apparatus undergoes maintenance can be offset.
"In another particularly advantageous embodiment the ramp is designed in one piece with the housing. Such a design is particularly stable and as a result can absorb greater forces.
"The signal processing component can be a microphone. It is then possible to position the microphone using the additional movement component perpendicular to the direction of insertion as close as possible to the second opening (sound inlet opening). Otherwise, if the signal processing component is a switch, for example, this can be pressed by the movement perpendicular to the direction of insertion into a opening, the opening edge of which spans a plane essentially parallel to the direction of insertion.
"The signal processing component can also be put into a pouch. This isolates the signal processing component from the frame. In particular a microphone as a signal processing component can thus be acoustically isolated from the frame.
"Specifically the pouch can be formed in one piece with the sealing element. In this way the installation of the hearing apparatus can be simplified, as two separate components do not have to be installed.
"Additionally it is an advantage if the sealing element is made of a rubber-like or foam-like material. As a result, a soundproof connection can generally be reliably created. A material of this type does have a high coefficient of friction and would produce strong resistance on the housing during insertion of the frame, but because the frame with the sealing element is not pressed into contact until the last phase of the insertion, virtually no resistance arises as a result of the sealing element during insertion.
"A membrane can also be disposed at the second opening. Such a membrane keeps dirt and water away from the signal processing component positioned below the second opening.
"Thus the signal processing components attached to the frame can be installed in a particularly suitable manner at an opening of the housing, the signal processing components being fixed in the end position in soundproof manner in respect of the inner chamber of the housing at the second opening. In this way acoustic feedback via the inner chamber of the housing as well as soiling of the inner chamber of the housing are prevented.
"Other features which are considered as characteristic for the invention are set forth in the appended claims.
"Although the invention is illustrated and described herein as embodied in a method of installing a signal processing component in a housing of a hearing apparatus and a hearing apparatus, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
"The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings."
For additional information on this patent, see: Lackert, Sebastian; Lederer,
Keywords for this news article include: Electronics, Signal Processing,
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC
Most Popular Stories
- Obama Administration Releases Proposal to Regulate For-Profit Colleges
- Some California Cities Seeking Water Independence
- Apple, HP, Intel May Take a Hit from Slowdown in Smartphone Sales Growth
- Chinese e-Commerce Giant Alibaba Gears for IPO in U.S.
- FDIC Files Lawsuit on Behalf of Banks Allegedly Hurt by Libor Scandal
- Motley Crue's Nikki Sixx Marries Model Courtney Bingham
- Will Missing Malaysian Jet Prompt Aviation System Change?
- SoCalGas Reaches Record Spend on Diversity Suppliers
- Keurig Adds Peet's coffee, Alters Starbucks deal
- Obama Seeks to Stay Neutral in CIA-Senate Conflict