JP3036034U - Antenna connection structure of wireless transmitter - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide an antenna connection structure of a wireless transmitter that enables efficient transmission without impairing the aesthetics of the place where the transmitter is installed. An antenna 9 is fixed to a transmitter body 4 with respect to a transmitter body 4, and a swing mechanism 8 capable of swinging at a predetermined angle, or a rear surface and a back surface of the transmitter body other than the back surface. By connecting through the detachable connection mechanism 14 installed on the surface, the antenna is extended from the transmitter main body to the wall body side or the side opposite to the wall body.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a structure for connecting an antenna to a wireless transmitter body fixed to the surface of a wall.

[0002]

[Prior art]

 Conventionally, in a wireless transmitter installed on the ceiling or wall of a building, the antenna is exposed to the outside of the transmitter body as shown in FIG. 5 (a), and the antenna is exposed as shown in (b). Some are built into the transmitter body.

[0003]

[Problems to be solved by the device]

 In recent years, it has been desired from an aesthetic point of view to make the protruding portion of equipment installed on the ceiling or the like as small as possible. Among them, in devices that transmit radio waves, the size of the transmitter itself can be reduced to some extent by devising the design, while the length of the antenna connected to it is Depending on the frequency, the length of good transmission efficiency is naturally decided. In addition, regarding the frequency of operation of radio waves, many countries, including Japan, have operational regulations regarding frequency, so from an aesthetic point of view, select a radio frequency with good transmission efficiency in accordance with the allowable antenna length. , Is difficult to design.

In other words, when designing a transmitter corresponding to radio waves of limited frequencies and strengths, pursuing transmission efficiency results in the long antenna 18 being exposed as shown in FIG. 5A. If the aesthetics are spoiled, and if the aesthetics are pursued, the antenna will be hidden inside the main body as shown in Fig. 5 (b), and the length will be shortened and the transmission efficiency will be poor, so the distance to the receiver must be shortened. Get lost.

In particular, in a device in which the detachable structure of the antenna to the transmitter body is not allowed and the radio field intensity is set to an upper limit, for example, a wireless transmitter of a low power security system, compatibility between aesthetics and transmission efficiency is further achieved. It was difficult.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an antenna connection structure for a wireless transmitter that enables efficient transmission without impairing the aesthetics of the installation location. To aim.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the antenna connection structure of a wireless transmitter according to claim 1, wherein the antenna is connected to a wireless transmitter main body fixed to a wall, and the antenna is the transmitter. When the swing mechanism is fixed to the body and can swing at a predetermined angle, and the swing mechanism swings to one swing end, the antenna extends from the transmitter body to the wall side. The characteristic feature is that the antenna is configured to extend from the transmitter main body to the side opposite to the wall when the swing mechanism swings to the other swing end.

Further, in the above-described antenna connection structure, the antenna has the bent portion between its tip and the swing mechanism, and when the swing mechanism swings to the other swing end, It is preferable that the antenna on the tip side is configured to be located on the side of the transmitter main body.

Further, the wireless transmitter main body is fixed to the wall body via a mounting base fixed to the wall body, and has a rotation attachment / detachment mechanism for rotationally attaching / detaching to / from the attachment base, and swings. When the mechanism swings to one swing end, it is preferable that the antenna on the front end side of the bent portion is configured to be positioned within a radius of 20 mm from the center line of the rotating attachment / detachment mechanism.

The wall body mentioned here means a ceiling, a wall, or the like. The oscillating mechanism means a connecting mechanism in which the antenna can oscillate around a certain central axis, and for example, a commonly used hinge or the like is used. The bent portion means a portion bent at a substantially right angle, and includes, for example, a bent portion integrally formed by bending, a bent portion bent by a hinge, and the like. Further, the rotary attachment / detachment mechanism is a mechanism for attaching / detaching the transmitter body with respect to the mounting base by rotating the transmitter body by a predetermined angle. For example, a threaded portion or a bayonet protrusion, There are grooves.

According to the above configuration, the antenna can be selectively extended toward the wall side or the side opposite to the wall side by the swing mechanism capable of swinging at a predetermined angle, and when extending toward the wall side, By forming a hole in the wall according to the diameter of the antenna in advance, the antenna can be inserted into the hole and the antenna can be extended without interfering with the wall. Hidden on the side.

Further, by arranging the antenna on the tip side of the bent portion on or near the center line of the rotation attachment / detachment mechanism, the antenna rotates near the rotation attachment / detachment center line when the body is attached / detached. . Therefore, the diameter of the hole formed in the wall can be minimized, and the position where the antenna will interfere with the wall is clear (near the center of the installation location of the main body), and its positioning is easy. become. Moreover, the formed hole can be hidden by the main body.

Since the diameter of the hole formed in the wall is usually within 40 mm, if the antenna is positioned within a radius of 20 mm from the center line of the rotating attachment / detachment mechanism, the antenna will be It will be inserted into the hole without interfering with.

On the other hand, the antenna connection structure of the wireless transmitter according to claim 4 is a structure in which the antenna is connected to the wireless transmitter main body which is fixed with the back surface facing the wall body. The back side of the main body and the surface other than the back side each have a detachable connection mechanism.When the antenna is connected to the connection mechanism on the back side, the antenna extends from the transmitter body to the wall side and the antenna is The feature is that the antenna is configured to extend from the transmitter body to the side opposite to the wall when connected to the connection mechanism on the surface other than the back surface.

Further, in this antenna connection structure, the radio transmitter main body is fixed to the wall body through the mounting base fixed to the wall body, and is rotated for rotation attachment / detachment with respect to the mounting base. It is preferable that the antenna is arranged within a radius of 20 mm from the center line of the rotating attachment / detachment mechanism when the antenna is provided with the attachment / detachment mechanism and the antenna extends from the transmitter body toward the wall.

The detachable connection mechanism mentioned here is a mechanism generally used when the wiring and the device are removably connected to each other, and examples thereof include a bolt or screw type connector connection, a screw type connector connection, and a screw. None There are terminal connections, etc.

According to such a configuration, when the antenna is connected to the connection mechanism on the back surface, the antenna extends toward the wall body, so that the same operation as in claims 1 to 3 can be produced.

[0018]

[Embodiment of the invention]

 As an example of an embodiment of the present invention, FIG. 1 is an external perspective view of a wireless transmitter with a built-in signal detector, and FIG. 2 is a vertical sectional view in which the internal equipment of the transmitter is omitted.

In this embodiment, the circular mounting base 2 is fixed to the ceiling 1 with wood screws or the like, and is formed near the periphery of the base 2, so that the screw portion 3 has a hemispherical shape that covers the built-in device 4 of the transmitter. It is screwed with a male screw portion 6 formed on the periphery of the opening of the cover 5. In the cover 5, detectors such as a human body detector and a fire detector, an amplifier for amplifying the signal from the detector, an MSK modulator for modulating the signal from the detector, and an MSK modulator for the detector are provided. It has a built-in power amplifier that amplifies the signal. A circular lid 7 fitted into the opening of the cover 5 covers the internal devices from the back side. A single groove extending from the center to the outer edge is formed in the lid portion 7, and one end of a metal hinge 8 connected to the power amplifier is fixed in the middle of the groove. The end of the antenna 9 is connected to the other end of the hinge 8 so that the linear portion 12 of the antenna 9 can be swung by 180 °. The antenna 9 has a bent portion bent at a right angle by the hinge 11 between the hinge 8 and the tip portion 10, and the distance between the hinges 8 and 11 is the distance between the rotation axis of the screw and the hinge 8. Are becoming equal. Further, the antenna straight line portion 12 between the hinges 8 and 11 is completely set in the groove when the straight line portion 12 is in contact with the groove.

When a hole can be formed in the ceiling or the like when implementing such a mode, as shown in FIG. 2A, the base 2 is slightly larger than the diameter of the antenna in the center thereof. The hole having the same diameter as the hole is formed on the ceiling 1 on the rotating shaft of the screw. Then, the antenna straight line portion 12 is swung from the hinge 8 toward the inside of the lid portion 7, the antenna straight line portion 13 is extended from the transmitter main body to the ceiling 1 side, and is positioned on the rotation axis of the screw. Then, the main body is screwed while inserting the antenna 9 into the above hole. By doing so, the antenna 9 is completely hidden behind the main body, and the required length is maintained.

On the other hand, when it is not possible to form a hole, as shown in FIG. 2B, the antenna straight line portion 12 is swung so as to face the outside of the lid portion 7 from the hinge 8 and the antenna straight portion 12 is swung. With the straight part 13 extended to the side opposite to the ceiling 1 at the side of the transmitter body, screw the body together.

FIG. 3 shows a vertical sectional view of another embodiment. The difference from the embodiment shown in FIG. 2 is that the engaging projections 17 formed on the transmitter body are fitted and fixed in the engaging recesses 16 formed on the mounting base. The point is that the whole is linear and the swing mechanism at the end is fixed to the side surface of the transmitter body. In this form, the antenna can be concealed and the structure of the antenna and the lid is simplified.

FIG. 4 shows an embodiment of a connection structure having a detachable connection mechanism. The difference from the configuration shown in FIG. 2 is that the antenna and the main body are connected not by a hinge but by a removable screw-type connector 14, and that the connector 14 is on the rear surface of the main body, and the rotation of screwing is performed. One on the axis and one on the side of the body.

Accordingly, when the antenna is allowed to be attached / detached, the antenna can be easily attached / detached, and the connection point can be appropriately changed according to the condition of the wall body. In the embodiment of the present invention, the hinge and the mounting position of the screw-type connector are other than those described above as long as the antenna can be selectively extended from the transmitter main body to the wall side or the side opposite to the wall side. But it doesn't matter. For example, in a screw-in type connector, it may be provided on the zenith surface 15 instead of the side surface of the transmitter body. Further, the shapes of the main body and the mounting base and the mutual engagement structure are not limited to those described above. For example, the concaves, convexes, male threads, female threads, etc. may be formed in reverse to each other. . Further, the present invention is applicable not only to a transmitter equipped with a detector but also to a transmitter independent of the detector, and the internal structure of the transmitter is not limited to the one described above. Also, other modulation methods such as FM modulation and FS modulation may be used for the modulator, and other built-in devices can be added or changed at any time as long as they are used for the transmitter installed on the wall. Is.

[0025]

[Effect of the invention]

 According to the present invention, the antenna can be selectively extended from the transmitter main body to the wall side or the side opposite to the wall side, so that the antenna can be exposed or the antenna can be exposed depending on the situation of the wall on which the main body is installed. It can be concealed on the back side of the transmitter while maintaining the length. Therefore, by concealing it, high transmission efficiency can be maintained without impairing the aesthetics of the installation site. In addition, since the concealed antenna is located near the centerline of the detachable rotation in the rotary detachable transmitter, the diameter of the hole formed in the wall can be minimized, and the transmitter can be installed near the center of the installation location. Since it is sufficient to form the hole, positioning of the hole becomes easy.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an embodiment of the present invention, showing a state where an antenna is concealed (a) and a state where the antenna is exposed (b).

2 is a vertical sectional view (a) and (b) of the transmitter shown in FIG.

FIG. 3 is a vertical cross-sectional view of another embodiment.

FIG. 4 is a vertical cross-sectional view of another embodiment.

FIG. 5 is an external perspective view of a conventional transmitter, in which the antenna is exposed (a) and the antenna is incorporated in the transmitter (b).

[Explanation of symbols]

 1 Ceiling 2 Mounting Base 3 Female Thread 4 Body of Detection Signal Transmitter 5 Cover 6 Male Thread 7 Lid 8, 11 Hinge 9 Antenna 10 Antenna Tip 12, 13 Antenna Straight 14 Screw-in Connector 16 Recess 17 Convex

Claims (5)

[Utility model registration claims] 1. A structure for connecting an antenna to a radio transmitter main body fixed to a wall body, wherein the antenna connected to the transmitter main body is fixed to the transmitter main body and at a predetermined angle. When the swing mechanism has a swing mechanism capable of swinging and the swing mechanism swings to one swing end, the antenna extends from the transmitter body to the wall side, and the swing mechanism moves to the other side. An antenna connection structure for a wireless transmitter, wherein the antenna is configured to extend from the transmitter main body to a side opposite to the wall body when the antenna is swung to a swing end. 2. The antenna has a bent portion between its tip portion and the swing mechanism, and in a state where the swing mechanism swings to the other swing end, a portion closer to the tip side than the bend portion is provided. The antenna connection structure for a wireless transmitter according to claim 1, wherein an antenna is arranged laterally of the transmitter body. 3. The wireless transmitter main body is fixed to the wall body via an attachment base fixed to the wall body, and
In addition to having a rotary attachment / detachment mechanism for rotationally attaching / detaching to / from the mounting base, when the swinging mechanism swings to the one swinging end, the antenna on the tip end side of the bent portion of the rotary attaching / detaching mechanism is The antenna connection structure for a wireless transmitter according to claim 2, wherein the antenna connection structure is located within a radius of 20 mm from the center line. 4. A structure for connecting an antenna to a radio transmitter main body, which is fixed in a state where a back surface faces a wall body,
Each of the back surface and the surface other than the back surface of the transmitter body has a detachable connection mechanism, and when the antenna is connected to the connection mechanism on the back surface, the antenna extends from the transmitter body to the wall side. Along with the antenna connected to a connection mechanism on a surface other than the back surface, the antenna is configured to extend from the transmitter main body to the side opposite to the wall body. Connection structure. 5. The wireless transmitter main body is fixed to a wall body via a mounting base fixed to the wall body, and
In addition to having a rotary attachment / detachment mechanism for rotationally attaching / detaching to / from the mounting base, the antenna is within a radius of 20 mm from the center line of the rotary attachment / detachment mechanism when the antenna extends from the transmitter body to the wall side. The antenna connection structure for a wireless transmitter according to claim 4, wherein the antenna connection structure is configured to be located.