US3515822A - Quick release spring latch for hearing aid casing - Google Patents

Quick release spring latch for hearing aid casing Download PDF

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Publication number
US3515822A
US3515822A US563208A US3515822DA US3515822A US 3515822 A US3515822 A US 3515822A US 563208 A US563208 A US 563208A US 3515822D A US3515822D A US 3515822DA US 3515822 A US3515822 A US 3515822A
Authority
US
United States
Prior art keywords
tag
lid
hearing aid
casing
spring
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
Application number
US563208A
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English (en)
Inventor
Martinus Marinus Van Der Pas
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.)
US Philips Corp
Original Assignee
US Philips Corp
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
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3515822A publication Critical patent/US3515822A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/04—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception comprising pocket amplifiers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B81/00—Cabinets or racks specially adapted for other particular purposes, e.g. for storing guns or skis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture

Definitions

  • FIG.2 QUICK RELEASE SPRING LATCH FOR HEARING AID CASING Filed Julyfi, 1966 FIG.1 FIG.2
  • a hearing aid casing having two complementary shaped enveloping lids for containing therebetween the component parts of the hearing air.
  • the lids are held together in a closed position by a wire spring within the casing which can be released from without through an aperture formed in the bottom by the lids.
  • the invention relates to a casing, more particularly for a hearing aid, consisting of a frame and at least one lid, one edge of which is provided with a tag hooked into the frame, while the opposite edge is secured to the frame by means of a bolt member.
  • This structure has the advantage that the lidsgenerally two-can be entirely smooth on the outer side, which permits of carrying the apparatus beneath the clothes or in a pocket thereof.
  • Hearing aid casings of the prior art usually have bolt members for joining the two lids of the casing. These bolt members are slidably journalled on the frame and are tightened by means of screws. A disadvantage of this arrangement is that the screws frequently loosen as while the case is being carried in a pocket or other place beneath the clothes.
  • An object therefore of this invention is to provide a simplified construction for a hearing aid casing.
  • the drawing shows the metal casing of a hearing aid to be carried at or beneath the clothes (a so-called pocket device).
  • the casing has a metal frame consisting of a substantially strip-shaped part 1 to one end of whichin the drawing to the lower enda base part 3 is secured which extends at right angles to the longitudinal direction of the strip 1.
  • the strip-shaped frame part 1 supports a preferably insulating chassis plate 5 on which are mounted a plurality of component parts of the hearing aidwhich are not shown for the sake of clarity.
  • the casing of the device further consists of two preferably identical adjoining lids 7 and 9 the first of which will be described more fully hereinafter. Instead of consisting of a frame and two lids, as shown, the casing could also consist of a frame which at the same time constitutes one half of the casing and one lid fitting thereto.
  • the slightly box-shaped lid 7 is at one of its edgesin this case at the upper edgeprovided with a securing tag 11 which is hooked together with a corresponding tag on the other lid 9 into a fitting slot 15 formed in a rectangularly bent portion 13 of the frame part 1.
  • the lower-edge of the lid 7 is secured to the 3,515,822 Patented June 2, 1970 "ice frame part 3 by means of a wire spring 17 substantially extending along the said lower edge. At least one of the ends of the wire spring 17 yields freely and is located under a spring pressure parallel to the lid 7 and directed towards the said lower edge between a tag 19 formed on this lower edge and a tag 21 extending in opposite direction formed on the frame part 3.
  • the tag 19 is bent over towards the inner side of the lid 7, while the tag 21 has two extended portions each located on either side of the tag 19, completely engages the inner surface of the lid and consists of a portion of the downwardly protruding or looking edge of the box-shaped frame part 3.
  • the wire spring 17, at its resilient free end, is clamped between the tags 19 and 21, tag 19 being directed obliquely towards the centre of the box, as shown in FIG. 2.
  • the downwardly directed spring pressure pushes the comparatively stiff wire spring 17 into the wedge-shaped space (see FIG. 2) between the tags 19 and 21, which results in the lid being drawn tightly and in a rattle-free manner against the edge of tag 21 of the frame part.
  • the wire spring 17 is preferably U-shaped and its two respective limbs serve for securing the two lids 7 and 9.
  • the base portion 23 of the U-shaped wire spring is secured to the lower side of the frame part 3, for example, by means of a few tags 25 cut out of this frame part; as shown in FIG. 1, each of the limbs of the wire spring has a kink and each limb engages in the kink point in a direction opposite the said spring pressure the lower side of the frame part 3.
  • the wire spring is accessible through an aperture 27 provided in the lower edges of the two lids 7 and 9; in normal operation, this aperture is closed, for example, by a pivotal lower lid locked by means of a catch (which is not shown for the sake of clarity). If the lid 7 should be detached, as after opening the casing, the freely yielding end of the said wire spring 17 is lifted against the spring pressure out of the said wedge-shaped space between the tags 19 and 21 and placed on the other side of the tag 19. The tag 19 can now pass unhindered through the recess between the tag portions 21 and subsequently the tag 11 formed on the upper edge of the lid can be hooked out of the slot 15 without the use of further means. The lid 7 is secured in that, after this lid has been put in place, the freely yielding end of the wire spring 17 is again placed between the tags 19 and 21.
  • the spring consists of two separate substantially straight wires.
  • the spring wire associated, for example, with the lid 7 may be secured either to one of the tag portions 21 or to an additional tag to be formed beside the tag 19 on the lower edge of the lid 7.
  • the tag 19 is parallel to the lid 7 and the space between the tags 19 and 21 is shaped into the form of a wedge in that the tag 21 or at least its parts adjacent the tag 19 are slightly bent inwards. In the position shown in FIG. 2, however, the bolt spring 17 can be more readily lifted and then closed again.
  • a spring latch locking arrangement for a hearing aid casing comprising a frame member for supporting the component parts of the hearing aid, two substantially parallel lid members enveloping the frame member, said lid members having upper and lower edges and removably engageable along their upper edges to the frame member, tag members formed from inwardly directed portions of the lower edges of each of the lid members, said tag members being positioned for coacting with openings formed on either side of the frame member by extended portions of said member, a wire spring attached to the frame member having resilient legs engageable between the extended portions of the frame member and the tag members to urge the respective lid members together and to prevent their separa- 4 tion by blocking the opening formed by the extended portions of the frame.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Packaging For Recording Disks (AREA)
  • Clamps And Clips (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Casings For Electric Apparatus (AREA)
US563208A 1965-07-06 1966-07-06 Quick release spring latch for hearing aid casing Expired - Lifetime US3515822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6508636A NL6508636A (OSRAM) 1965-07-06 1965-07-06

Publications (1)

Publication Number Publication Date
US3515822A true US3515822A (en) 1970-06-02

Family

ID=19793577

Family Applications (1)

Application Number Title Priority Date Filing Date
US563208A Expired - Lifetime US3515822A (en) 1965-07-06 1966-07-06 Quick release spring latch for hearing aid casing

Country Status (8)

Country Link
US (1) US3515822A (OSRAM)
AT (1) AT261022B (OSRAM)
CH (1) CH464295A (OSRAM)
DE (1) DE1554375A1 (OSRAM)
DK (1) DK115640B (OSRAM)
ES (1) ES328654A1 (OSRAM)
GB (1) GB1122908A (OSRAM)
NL (1) NL6508636A (OSRAM)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23203E (en) * 1944-03-17 1950-03-07 Wearable electronic hearing aid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23203E (en) * 1944-03-17 1950-03-07 Wearable electronic hearing aid

Also Published As

Publication number Publication date
GB1122908A (en) 1968-08-07
CH464295A (de) 1968-10-31
ES328654A1 (es) 1967-08-16
NL6508636A (OSRAM) 1967-01-09
DK115640B (da) 1969-10-27
AT261022B (de) 1968-04-10
DE1554375A1 (de) 1970-05-14

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