Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Including means to hold or retard hinged members against...
Reexamination Certificate
1998-10-05
2001-01-23
Knight, Anthony (Department: 3626)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Including means to hold or retard hinged members against...
C016S303000, C016S341000, C379S433020
Reexamination Certificate
active
06175990
ABSTRACT:
FIELD AND BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a hinge device preferably used in opening and closing various opening and closing members of a small-sized electronic device such as a portable telephone, a portable computer, an electronic notebook or the like relative to a main body of the device.
2. Description of Related Art
Conventionally, this kind of a hinge device is referred to as a tilt hinge and there have been publicly known various constitutions in which various cams and springs are integrated to maintain an opening and closing member at an arbitrary or a predetermined opening angle relative to a main body of a device. However, there poses a problem in any of them that the structure is excessively complicated and fabrication cost is high. In recent years, industrial circles are exposed to rough waves of reduction in cost and also in this kind of technical field of electronic devices, request for small size formation and reduction in cost is very severe.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a hinge device capable of meeting technological request required in a hinge device mentioned above and capable of fabricating in a small size, with a simple structure and inexpensively.
In order to achieve the above-described object, according to one aspect of the present invention, there is provided a hinge device for opening and closing an opening and closing member which is opened or closed one-sidedly or relatively in respect of a main body of the device, the hinge device comprising a shaft installed with a flange portion at one end portion thereof, a fixing member having a rotational lock which is locked to other end portion of the shaft and fixed to one connecting portion of the opening and closing member constituted to be rotatable along with the shaft, a fixed cam having a rotational lock which is engaged with a side of the flange portion of the rotating shaft by rotatably inserting the rotating shaft through a central portion thereof and is fixed to other connecting portion of the opening and closing member, a rotary sliding cam which is installed between the fixed cam and the fixing member, engaged with the shaft inserted through a central portion thereof and is rotatable along with the shaft and slidable in an axial direction, and a compression spring elastically installed between the rotary sliding cam and the fixing member by being wound around the shaft, wherein the fixed cam is installed with a pair of cam portions at opposed positions on one side face thereof and the rotary sliding cam is installed with projected portions which are brought into press contact with the cam portions of the fixed cam.
According to another aspect of the present invention, there is provided a hinge device for opening and closing an opening and closing member which is opened and closed one-sidedly or relatively in respect of a main body of the device, the hinge device comprising a shaft made of a synthetic resin which is respectively installed with a flange portion at one end portion thereof, a deformed shaft portion at a central portion thereof and an engaging groove for attaching a lock ring and a peripheral groove for attaching an E ring at other end portion thereof, a fixing member made of a synthetic resin having a rotational lock which is engaged with an end portion of the deformed shaft portion of the shaft by lockingly mounting a lock ring engaged with the end portion at inside thereof, and fixed to one connecting portion of the opening and closing member constituted to be rotatable along with the rotating shaft, a fixed cam having a rotational lock which is engaged with a side of the flange portion of the rotating shaft by rotatably inserting the rotating shaft through a central portion thereof and is fixed to other connecting portion of the opening and closing member, a rotary sliding cam made of a synthetic resin which is opposed to the fixed cam, engaged with the deformed shaft portion of the shaft and attached slidably in an axial direction, and a compression spring elastically installed between the rotary sliding cam and the fixing member by being wound around the shaft, wherein the fixed cam is installed with cam portions at one side face thereof and the rotary sliding cam is installed with a plurality of projected portions which are brought into press contact with the cam portions.
According to another aspect of the present invention, there is provided a hinge device for connecting a transmitting unit and a receiving unit of a portable telephone to each other, the hinge device comprising a shaft one end portion of which is engaged with a fixing member having a rotational lock which is fixedly contained in a containing hole installed in an axial direction of a connecting portion installed at an end portion of either of the transmitting unit and the receiving unit, a fixed cam having a rotational lock which is rotatably inserted with the shaft at an insertion hole installed in the axial direction of a central portion thereof at the one end portion of the shaft, locked by a flange portion of the shaft and fixedly contained in a containing hole installed in the axial direction of a connecting portion of either of the transmitting unit and the receiving unit to which the fixing member is not fixed, a rotary sliding cam which is installed between the fixed cam and the fixing member, engaged with the shaft inserted through a central portion thereof, is rotatable along with the shaft and slidable in the axial direction, and a compression spring elastically installed between the rotary sliding cam and the fixing member by being wound around the shaft, wherein the fixed cam is installed with cam portions at one side face thereof and the rotary sliding cam is installed with projected portions which are brought into press contact with the cam portions.
According to another aspect of the present invention, there is provided a hinge device for opening and closing an opening and closing member which is opened and closed one-sidedly or relatively in respect of a main body of the device, the hinge device comprising a shaft leftwardly and rightwardly engaged with connecting portions of an opening and closing member, a fixing member having a rotational lock which is engaged with one end portion of the shaft and fixed to one of the connecting portions of the opening and closing member which is constituted to be rotatable along with the shaft, a fixed cam having a rotational lock which is engaged with other of the connecting portions of the opening and closing member by rotatably inserting the rotating shaft into a central portion thereof, a rotary sliding cam which is installed between the fixed cam and the fixing member, engaged with the shaft inserted through a central portion thereof, rotatable along with the shaft and slidable in the axial direction, and a compression spring which is elastically installed between the rotary sliding cam and the fixing member by being wound around the shaft, wherein the fixed cam is installed with a pair of cam portions at opposed positions on one side face thereof, the rotary sliding cam is installed with projected portions which are brought into press contact with the cam portions and the shaft is fixed to one side of the opening and closing member by fixing means such that the shaft is prevented from coming off the opening and closing member.
According to another aspect of the present invention, there is provided a hinge device for opening and closing an opening and closing member which is opened or closed one-sidedly or relatively in respect of a main body of the device, the hinge device comprising a shaft having a deformed shaft portion on a side of one side portion of a central portion and a large diameter circular shaft portion on a side of other side portion, installed with an engaging groove for attaching a lock ring at one end portion of the deformed shaft portion and attached with a fixing screw at an end portion of the circular shaft portion, a fixing member
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