Hinge for opening and closing a dust cover

• US 4,424,606 A
• Filed: 08/10/1981
• Issued: 01/10/1984
• Est. Priority Date: 08/10/1981
• Status: Expired due to Fees

• Current Assignee: Katoh Electrical Machinery Company Limited
• Original Assignee: Katoh Electrical Machinery Company Limited
• Inventors: Sorimachi, Akira
• Primary Examiner(s): Rosenbaum, Mark
• Application Number:
  US06/293,215
• Time in Patent Office: 883 Days
• Field of Search: 274/2, 274/1 R, 369/75, 220/335, 16/244, 16/245, 16/248, 16/238, 16/223, 16/262, 16/264, 16/265, 16/307, 16/308, 16/386, 16/243, 16/289, 16/296, 16/352, 16/292, 16/297, 16/325, 16/324 , 16/321, 16/332, 16/258
• US Class Current: 16/223
• CPC Class Codes: E05D 11/1064 with a coil spring perpendicular to the pivot axis
• CPC Class Codes: E05F 1/1261 for counterbalancing
• CPC Class Codes: E05Y 2900/20 for furnitures, e.g. cabinets

Abstract

This invention deals with a hinge for opening or closing a dust cover of record players, which, in order to keep the hinge body from being exposed, to prevent the opened dust cover from excessively projecting rearwardly and to stably sustain the dust cover at an intermediate opening angle, comprises: a cabinet; a dust cover; a slider disposed vertically slidable in the rear portion of the cabinet on each side; a spring urging the slider upward; a support member removably mounted to the dust cover and rotatably mounted on the cabinet by a hinge pin; and a follower provided to the support member and adapted to contact the head of the slider. The hinge of this invention may be provided, in addition to the above construction, with a means to stably sustain the dust cover at an intermediate opening angle.

Claims

1. In a record player cabinet with a defined hinge receiving space therein, a dust cover hinge for said space which will permit the attached dust cover to pivot open, said hinge comprising in combination:

(a) a hollow elongated hinge support member (3) sized to fit said space, with an inner and an outer end, having a spring case (3a) with an inner wall at said inner end and hinge pin support means (3b) at said outer end;

(b) a flat slider (4) in said spring case (3a) with a defined upper portion, lower end and a front portion, a plurality of recesses (4a, 4b) in said front portion, an acting pin (4d) passing through said upper portion with projections extending out therefrom and an upwardly biased vertical compression coil spring (5) with two ends, one end being connected to said slider lower end and the other end being in said spring case (3a), a leaf spring (6) mounted on said spring case inner wall to sequentially engage said slider recesses (4a, 4b) at predetermined pivoting positions of the hinge; and

,

(c) a cover support (7) with a base plate (7a), an angle-shaped holder (7b) on said base plate, follower means (7c) under said base plate, hinge pin supports (7d) and a hinge pin under said follower means, said follower means (7c) engaging said acting pin projections, said hinge pin being rotatably mounted to the hinge pin support means (3b) by the hinge pin supports (7d).

2. In a record player cabinet with a defined hinge receiving space therein, a dust cover hinge for said space which will permit the attached dust cover to pivot open, said hinge comprising in combination:

(a) a hollow elongated hinge support member (11) sized to fit said space, with an inner and an outer end, having a spring case (11a) with an inner wall at said inner end and hinge pin support means (11b) at said outer end;

(b) a flat slider (12) vertically disposed in said spring case (11a) with a defined upper portion, lower end, and, a pair of support pin holders (12b) with a support pin (12b) passing through said pin holders at said upper portion, an upwardly biased vertical compression coil spring (13) with two ends, one end being connected to said slider lower end and the other end being in said spring case (11a), a hinge pin (16); and

,

(c) a cover support member (15) with a mounting portion (15b) and follower means with a cam portion (15c) under said base plate, said mounting portion (15b) being mounted on said hinge pin supports which are pivotally mounted to the hinge pin (16), said cam portion (15c) and support pin (12c) being so arranged and disposed that as the dust cover opens, the distance that the support pin (12c) moves relative to the cam portion (15c) increases radically, and the compression spring (13) gradually overcomes the weight of the dust cover.

3. In a record player as claimed in claim 2 including a recess (17b) at the intermediate portion of the cam portion (15c) so disposed as to receive the support pin (12c).