JPH0720945Y2 - Cordless phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a cordless telephone which can be opened and closed by a hinge.

2. Description of the Related Art Conventionally, a lid is attached to a main body via a hinge so that the lid can be opened and closed, or a lid is divided into two parts, an upper casing and a lower casing, and the upper casing and the lower casing are connected via a hinge. There is a case in which the case and the case rotate automatically with each other, and in such a case, a hinge may be made of synthetic resin in order to reduce the cost.

Hereinafter, a cordless telephone having a conventional hinge as described above will be described with reference to the drawings.

FIG. 3 is an exploded perspective view of a conventional cordless telephone having a hinge. FIG. 4 is an enlarged sectional view of the hinge portion. In FIGS. 3 and 4, 1 is an upper housing and 2 is a lower housing, each made of synthetic resin. Reference numerals 3 and 4 are hinge cylinders integrally provided on the end surface of the upper housing 1. Reference numeral 5 is a hinge tube integrally provided on the end surface of the lower housing 2. 6 is a hinge tube 3, 4 of the upper housing 1.
And a shaft inserted into the hinge tube 5 of the lower housing 2. The shaft 6 is also made of synthetic resin, and the hinge cylinders 3, 4
After being inserted into the hinge tube 5, it is adhered to the hinge tubes 3 and 4 to prevent it from coming off.

The cordless telephone having the hinge configured as described above can be made small by closing the upper casing 1 and the lower casing 2 when carrying the cordless telephone.

However, in the above configuration, when the upper housing 1 and the lower housing 2 are opened and closed, the inner surface of the hinge cylinder 5 and the outer surface of the shaft 6 rub. In addition, both end surfaces of the hinge cylinder 5 and the hinge cylinder 3,
The opposite surface of 4 rubs. When objects made of synthetic resin rub against each other, they are easily worn, and the dust particles become white powder. If the upper housing 1 and the lower housing 2 are cordless telephones provided with a substrate having electrical components inside, the hinge cylinder 5 and the hinge cylinders 3 and 4 rub against each other to cause abrasion dust. When white powder is generated, this white powder flows out from the hinge cylinder to the surface of the housing, which is not good in appearance. If it enters the inside, it may cause poor contact of electrical parts, or if it is attached near the speaker or microphone, it may be inhaled from the user's mouth, etc. and may cause health problems. Had.

The present invention solves the above-mentioned conventional problems and provides a cordless telephone having two housings that can be opened and closed.
An object of the present invention is to provide a cordless telephone capable of preventing wear debris generated in a hinge portion from flowing out to the surface and inside of the housings when opening and closing the two housings.

Means for Solving the Problems To achieve this object, a cordless telephone of the present invention is a cordless telephone having two housings that can be opened and closed, and a first hinge provided in a first housing. A cylinder, a second hinge cylinder provided in the second housing, and a shaft that penetrates both hinge cylinders and is fixed to the first hinge cylinder,
The inner surface of the second hinge cylinder is provided with an abutting member that keeps the opposed end surfaces of the first and second hinge cylinders at positions that are always separated from each other.
The space between the shaft and the hinge cylinder and the space between the shaft and the second hinge cylinder are substantially sealed, and the contact member is located in the substantially sealed space formed by the second hinge cylinder and the shaft. It was configured.

Action With this configuration, the tip end of the protrusion member and the tip of the shaft in the substantially closed space formed by the second hinge cylinder and the shaft before the facing end surfaces of the first hinge cylinder and the second hinge cylinder contact each other. The surface abuts.

Embodiment One embodiment of the present invention will be described below with reference to the drawings. In the cordless telephone of this embodiment, a foldable type in which two housings having a board provided with electric parts inside are connected by a hinge is shown.

FIG. 1 is an exploded perspective view of a cordless telephone having a hinge according to an embodiment of the present invention, and FIG. 2 is a side sectional view of the hinge portion. In FIGS. 1 and 2, 7 is an upper cabinet, 8 is a lower cabinet, 9 and 10 are hinge tubes of the upper cabinet 7, and 11 is a hinge tube of the lower cabinet 8. Reference numerals 12 and 13 denote shafts for connecting the upper cabinet and the lower cabinet, which are inserted into the hinge cylinders 9 and 10 and adhered to the hinge cylinders 9 and 10, respectively. Also, the large diameter parts of the shafts 12 and 13 are hinged cylinders 11, 12 and 1
3 is approximately the same as the inner diameter, and shafts 12 and 13 are
4,15 are provided. Further, as shown in FIG. 2, ribs 16 are provided on the inner surface of the hinge tube 11 of the lower cabinet. The rib 16 is located in a substantially sealed space formed by the hinge cylinder 11 and the shafts 12 and 13. The gap between the rib 16 and the shafts 12 and 13 is smaller than the gap between the hinge cylinders 9 and 10 and the hinge cylinder 11. That is, when the hinge cylinder 11 is closer to the hinge cylinder 9 or when the hinge cylinder 11 is closer to the hinge cylinder 10, the sub 16 contacts the tip surface of the shaft 12, or the rib 16 is the tip of the shaft 13. By abutting on the surfaces, the dimensional relationship is such that the opposed ends of the hinge cylinder 11 and the hinge cylinder 9 or the hinge cylinder 11 and the hinge cylinder 10 do not contact each other. The operation of the foldable cordless telephone configured as above will be described below.

First, when the upper cabinet 7 and the lower cabinet 8 are covered with each other, they are in a folded state. In this state, it is in a standby state waiting for a call from the partner station. When you get a call or try to make a call,
To make a call, the user opens the upper cabinet 7 and the lower cabinet 8. In this way, the user uses the foldable cordless telephone by rotating the upper cabinet 7 and the lower cabinet 8 with respect to each other. The inner surfaces of the shafts 12 and 13 and the hinge cylinder 11 rub against each other during rotation, and the inner surfaces of the shafts 12 and 13 and the hinge cylinder 11 and the ribs 16 and the end surfaces of the shafts 12 and 13 wear each other after long-term use. Come on. Then, the scraps generated by the wear will be
Are accumulated between the small-diameter portions 14 and 15 and the inner surface of the hinge cylinder 11.

As described above, the cordless telephone of the present invention includes the first hinge tube provided in the first housing, the second hinge tube provided in the second housing, and both hinge tubes. A first hinge cylinder and a second hinge cylinder, and a shaft fixed to the first hinge cylinder; and a contact member located in a substantially sealed space formed by the second hinge cylinder and the shaft. Since the contact member and the tip end surface of the shaft are configured to contact each other before the opposing end surfaces of the hinge cylinder contact each other, even if the first and second casings are opened and closed for a long period of time. The abrasion dust generated by rubbing the abutting member inside the second hinge cylinder and the tip end surface of the shaft, and the inner surface of the second hinge cylinder and the side surface of the shaft, into the substantially closed space by the second hinge cylinder and the shaft. As it accumulates, wear debris is stored in the first and second housings. It is possible to prevent intrusion and adhesion to electric parts. Further, since it is possible to prevent wear debris from leaking to the outside, it is possible to prevent the human body from being adversely affected, and it is possible to realize an excellent cordless telephone that can prevent the appearance from being impaired.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a foldable cordless telephone in one embodiment of the box of the present invention, and FIG. 2 is a sectional view of a hinge part when FIG. 1 is assembled, FIG. 3 is an exploded view of an electric device having a conventional hinge, and FIG. 4 is a cross-sectional view of the hinge portion when FIG. 3 is assembled. 7 …… Upper cabinet, 8 …… Lower cabinet 9,10 …… Hinge tube, 11 …… Hinge tube 12,13 …… Hinge shaft 14,15 …… Small diameter part, 16 …… Rib

Claims (1)

[Scope of utility model registration request] 1. A cordless telephone having two housings that can be opened and closed, wherein a first hinge cylinder provided in a first housing and a second hinge cylinder provided in a second housing. And a shaft fixed to the first hinge cylinder through the both hinge cylinders, and the opposite end surfaces of the first and second hinge cylinders are always separated from each other on the inner surface of the second hinge cylinder. A contact member that keeps the position is provided, and the shaft and the first hinge cylinder and the shaft and the second hinge cylinder are configured to be substantially sealed, and the contact member is A cordless telephone, which is located in a substantially sealed space formed by the second hinge cylinder and the shaft.