JPS6341266B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to telephones, and more particularly to a switch for switching between a signal circuit and a speech circuit in a small and lightweight telephone.

[Technical background of the invention and its problems]

Normally, telephones require that the switch for switching between the signal circuit and the calling circuit operate reliably when the handset is raised and lowered, and that the handset does not fall easily from the telephone body. be done.

FIG. 1 shows a commonly used push-button telephone. Since the handset 1 of this telephone is heavy, the switch can be operated reliably by raising and lowering the handset. In addition, the handset 1 is attached to the phone body 2.
Since there is a hook for receiving the phone, there is no fear that the handset 1 will easily fall off the phone main body 2.

However, in the case of a wall-mounted telephone as shown in FIG. 2, the handset 3 is also lightweight and easily falls off the telephone main body 4. Furthermore, when it comes to telephones with a built-in body mechanism in the handset 5 (one-piece telephone) as shown in Figure 3, they can be used on a tabletop or hung on a wall, but the handset 5 itself is very small and lightweight. Therefore, it is very inconvenient because it is easy to move around on the tabletop, and it can end up waiting for a call. In addition,
In FIG. 3, reference numeral 6 indicates a jig for hanging the transmitter/receiver 5 on a wall, and a protrusion 7 provided on this jig 6
The hook switch is activated when it comes into contact with the hook switch.

By the way, most of the switches in conventional telephones are mechanical contacts, so they are unreliable, and if you try to miniaturize the telephone, the size is limited by the size of the built-in switch. .

Furthermore, in the case of small telephones, the handset and receiver are made smaller and lighter, so the switch will not work unless a micro switch that is light and operates is used. Furthermore, when a small micro switch is used, the installation location is limited and there are restrictions such as the need to provide a protrusion to operate the micro switch, resulting in an unsightly appearance.

[Purpose of the invention]

This invention was made in view of the above circumstances.
The purpose is to provide a telephone that improves the reliability of the switch, has no restrictions on where it can be installed, has a clean appearance, and is suitable for being small and lightweight so that the handset does not easily come off. .

[Summary of the invention]

For example, in a wall-mounted telephone, a non-contact operation type switch, such as a reed switch, which is turned on and off by a magnet and a magnetic field, is provided separately on either the wall-mounted jig side or the transmitter/receiver side, and the transmitter/receiver is provided on the other side. A magnetic body is provided which guides the lines of magnetic force from the magnet to the reed switch when the hook is hung, and the magnet, the reed switch, and the magnetic body constitute a non-contact operation type hook switch.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, before explaining the configuration of the present invention, its basic principle will be explained. That is, the fourth
When the magnetic bodies 11 are separated as shown in figure a,
The magnetic body 11 has no influence on the magnetic field between the two magnets 12 and 13 arranged opposite to each other. However, the fourth
When the magnetic body 11 approaches the magnets 12 and 13 as shown in FIG. b, the magnetic body 11 influences the magnetic field between the magnets 12 and 13, and the magnetic field between the magnets 12 and 13 weakens. On the other hand, if we consider a case where the magnet 14 and a non-contact operation type switch such as a reed switch 15 operated by the magnetic field from the magnet 14 are arranged apart from each other as shown in FIG. 5a and b, as shown in FIG. 5a, When the magnetic bodies 16 are separated as shown in FIG.
The magnetic field at does not affect reed switch 15. Therefore, as shown in FIG. 5b, the magnetic body 1
When the reed switch 6 approaches the magnet 14 and the reed switch 15, the magnetic field lines from the magnet 14 are guided by the magnetic body 16, and the magnetic field near the reed switch 15 becomes stronger, which turns the reed switch 15 on and off. .

FIG. 6 shows an application of the basic principle shown in FIGS. 5a and 5b to a small and lightweight wall-mounted telephone. In the figure, a wall hanging jig 22 made of, for example, plastic is fixed to a wall 21. Inside this wall-mounting jig 22, a magnet 23 and a non-contact type switch, such as a reed switch 24, are arranged at a distance. On the other hand, 25 is a handset with an integrated dial mechanism and the like. A magnetic material 26 made of, for example, ferrite is provided on the surface of the wall-mounting jig 22 of the transmitter/receiver 25 that faces the magnet 23 and reed switch 24 . Note that the magnet 23 and reed switch 24 in the wall hanging jig 22 are
When the transmitter/receiver 25 is removed from the jig 22, the distance between the reed switch 25 and the magnet 2
The distance is such that it is not affected by the magnetic field from 4.

That is, in this wall-mounted telephone, when the handset 25 is not in use, its magnetic body 26 is attracted to the magnet 23, so that it is fixedly supported on the wall-mounting jig 22. At this time, the magnetic lines of force from the magnet 23 are guided by the magnetic body 26 and reach the reed switch 24, whereby the reed switch 24 is turned on, for example, and the telephone enters the signal circuit state.

However, when the handset 25 is removed during a call,
Since the magnetic body 26 is separated from the magnet 23 and the reed switch 24, the reed switch 24 is no longer affected by the lines of magnetic force from the magnet 23. The reed switch 24 therefore operates in the opposite manner as described above, so that the telephone is switched from the signaling circuit to the talking circuit.

As described above, in this wall-mounted telephone, the switch is of a non-contact type, so reliability is improved compared to conventional mechanical contacts. In addition, since the switch operation is not related to the weight of the handset 25, the handset 25 can be made smaller and lighter.
Accordingly, the entire telephone can be made smaller and lighter. Furthermore, since it is a non-contact type, there are no restrictions on where it can be installed, and since it does not require any protrusions to operate the switch like a micro switch, it has an extremely clean appearance. Further, even if the handset 25 is small and lightweight, the handset 25 is fixed to the jig 22 by the attraction between the magnet 23 and the magnetic body 26, so there is no fear of it falling easily.

In the above embodiment, the magnet 23 and reed switch 24 are placed on the wall hanging jig 22 side, and the magnetic body 2
6 are respectively provided on the side of the transmitter/receiver 25, but their installation locations may be reversed. Further, in the above embodiment, when the magnetic body 16 is brought close to each other,
The principle shown in FIGS. 5a and 5b, in which the magnetic field around the reed switch 15 becomes stronger and the reed switch 15 operates thereby, is used. However, when the magnetic body 11 shown in FIGS. It is also possible to construct a switch using the principle that the magnetic field weakens.

In addition, in the above embodiment, this invention is described in the first embodiment.
Although an example in which the invention is applied to the one-piece telephone shown in the figure has been described, it goes without saying that the present invention can also be applied to other telephones such as those shown in FIGS. 1 and 2. Further, in the above embodiment, the reed switch 24 is used as a non-contact operation type switch, but the present invention is not limited to this, and other magnetoelectric conversion elements such as a Hall element and a magnetoresistive element may also be used.

〔Effect of the invention〕

As described above, according to the present invention, the reliability of the switch is improved, there is no restriction on the installation location of the switch, the appearance is simple, and the handset does not come off easily, making the telephone small and lightweight. It is suitable for

[Brief explanation of drawings]

Figures 1 to 3 are perspective views showing conventional telephones, Figures 4a and 5a and b and 5a and b are diagrams showing the basic principle of the present invention, and Figure 6 is a perspective view of a conventional telephone. FIG. 1 is a diagram showing the configuration of a telephone according to an embodiment. 22... Wall hanging jig, 23... Magnet, 24...
Reed switch, 25...transmitter.

Claims (1)

[Claims] 1. In a telephone set in which the hook switch is switched by removing or hooking the handset from the hooking part, a magnet provided on the hooking side of either the handset or the hooking part, and a same A non-contact operating switch is provided on the side of the latch and operates on/off by detecting a magnetic field, and a non-contact operating switch is provided on the other side of the latch corresponding to the separation range of the magnet and the non-contact operating switch to operate the transmitter/receiver. A telephone set comprising: a magnetic body that attracts the magnet when hung on the hook portion and changes the influence of the magnetic field on the non-contact operation type switch.