JPH0641371Y2 - Antenna device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an antenna device, and more particularly to an antenna device for a cordless telephone.

(B) Conventional Technology Conventionally, as an antenna device of a cordless telephone, one that is projected to the outside from the main body of the device is generally known.

However, in this type of device, since the antenna is exposed to the outside, the antenna is easily damaged, which causes a problem.

In view of this point, there is proposed a device using a built-in antenna as disclosed in Japanese Utility Model Laid-Open No. 62-37411 (H01Q1 / 24).

The technique disclosed in the above publication will be briefly described. In the technique disclosed in the publication, a U-shaped bent portion is provided near the central portion of an elastic wire and an inner wall of a case constituting a housing is provided. Providing a protrusion, press the U-shaped bent portion into the protrusion to fix the antenna to the case, bend one end of the linear antenna in an L shape in the normal direction of the printed board, and attach the wire to the printed board. A socket that can be electrically connected by press fitting is installed, and this printed board is attached to the case, and at the same time, the tip of the L-shaped bent portion of the antenna is inserted into the socket to attach and detach the antenna and the printed board. I am able to do it.

(C) Problems to be Solved by the Invention According to the above antenna device, the antenna can be housed inside the cabinet.

By the way, generally, when an electronic component is arranged in the vicinity of the antenna, various problems such as a change in the directivity of the antenna and a decrease in the radio wave coverage occur.

In order to solve such a problem, it is sufficient to increase the distance between the antenna and the electronic components arranged on the printed board. However, in the technique disclosed in the above publication, when the distance between the printed board and the electronic components is increased, There is a problem that the outer shape of the case (in particular, the dimension in the height direction) becomes large and a dead space is generated between the printed board and the case.

(D) Means for Solving the Problems In view of the above points, the present invention provides a concave portion formed on the inner wall surface of the cabinet and a first concave portion which is formed so as to be located in the space formed by the concave portion. Provided on a surface and said first
A plurality of protrusions that are separated from the second surface that is orthogonal or substantially orthogonal to the surface of FIG. 2 by a predetermined distance, a printed circuit board that is housed in the cabinet, and a wire rod that has a bent portion at one end. A cordless telephone characterized in that the wire member is held by being inserted between the second surface of the concave portion and the protrusion, and the bent portion of the wire member is connected to the printed circuit board for electrical connection. It is intended to provide an antenna device.

(E) Operation According to the present invention, the wire material to be the antenna is housed in the recess formed in the inner wall surface of the cabinet, and the bent portion is connected to the printed circuit board. Therefore, the dead space inside the cabinet can be reduced and the outer shape of the case can be downsized.

(F) Embodiment FIG. 1 to FIG. 3 are views showing an embodiment of the present invention. In the figure, (1) is a lower cabinet which constitutes a cabinet of a master or a slave of a cordless telephone, (2) is a recess formed in an inner wall surface (3) of the lower cabinet (1), (4) ( 4) (4) is provided on the first surface (2a) forming the recess (2) so as to be located in the space formed by the recess (2), and is orthogonal to the first surface (2a). Alternatively, a plurality of protrusions separated by a predetermined distance (X) from the substantially orthogonal second surface (2b), (5) is a printed circuit board screwed into the lower cabinet (1), and (6) is a printed circuit board ( Conductive pins implanted in 5), (7) a wire having a bent portion (7a) at one end, (8) an upper cabinet that composes a cabinet with the lower cabinet (1), and (9) The recess (2) of the upper cabinet (8)
It is a protrusion provided at a position opposite to.

Next, the assembling operation of such an apparatus will be described.

As disclosed in Japanese Utility Model Laid-Open No. 62-37411, a screw hole of a boss (not shown) formed in the lower cabinet (1) and a through hole (not shown) formed in the printed circuit board (5). ) Are aligned with each other, and then a screw is screwed from the component disposition surface side of the printed board (5), so that the printed board (5) is screwed to the lower cabinet (1).

Next, the wire (7) to be an antenna is attached to the second portion of the recess (2).
It is housed and fixed between the surface (2b) and the protrusions (4), (4) and (4), and the bent portion (7a) and the pin (6) are soldered to establish electrical connection.

After that, by fitting the projection (9) of the upper cabinet (8) into the recess (2) of the lower cabinet (1), the wire rod (7) is prevented from falling off by the projection (9). At the same time, the cabinet is constructed.

FIG. 4 is a view showing another embodiment of the present invention, in which the connector (9) is attached to the tip of the wire (7) and the printed board (5) respectively.
(10) is provided so that the wire (7) and the printed circuit board (5) can be electrically connected by connecting the connectors (9) and (10).

In the above-described embodiment, for simplification of description, only one side surface of the inner wall surface of the cabinet is shown, but the apparatus having the same configuration is arranged on the other side surface.

(G) Effect of the Invention According to the present invention, the recess formed in the inner wall surface of the cabinet and the first surface forming the recess so as to be located in the space formed by the recess, The wire rod is provided with a plurality of protrusions separated from the second face orthogonal to or substantially orthogonal to the first face by a predetermined distance, a printed circuit board accommodated in the cabinet, and a wire rod having a bent portion at one end. Is inserted between the second surface of the recess and the projection to hold the wire rod and to connect the bent portion of the wire rod to the printed circuit board for electrical connection. Therefore, the dead space in the cabinet is Can be reduced, which can contribute to downsizing of equipment.

[Brief description of drawings]

Each of the drawings shows an embodiment of the present invention. FIG. 1 is a perspective view of a main part of the lower cabinet, FIG. 2 is a perspective view of the upper cabinet viewed from the bottom side, and FIG. FIG. 4 and FIG. 4 are views showing another embodiment. (1) ... Lower cabinet, (2) ... Concave, (4) ... Protrusion, (5) ... Printed circuit board, (6) ... Pin, (7) ... Wire, (8) ... Upper cabinet, (9) ... Protrusion.

Claims (1)

[Scope of utility model registration request] 1. A recess formed on the inner wall surface of the cabinet,
A plurality of projections provided on the first surface forming the recess so as to be located in the space formed by the recess and separated from the second surface orthogonal or substantially orthogonal to the first surface by a predetermined distance. A printed circuit board housed in the cabinet, and a wire rod having a bent portion at one end. The wire rod is held by inserting the wire rod between the second surface of the recess and the protrusion. An antenna device, characterized in that the bent portion is connected to the printed circuit board for electrical connection.