JP2024017022A - Emergency telephone apparatus - Google Patents

Abstract

To provide an emergency telephone apparatus which makes a handset less likely to be removed (fall and displacement) and enables taking-out operation and attachment operation of the handset to be easily conducted.SOLUTION: An emergency telephone apparatus includes: a handset (26); a pedestal (25) in which a least a part of the handset is placed in a vertical attitude; and a box-shaped housing case (24) which houses the handset and the pedestal. An upper wall of the housing case (24) has: a support piece (41) which is disposed so as to incline downward from the front side to the rear side of the housing case and in which a tip may move vertically with a base part side set as a rotation supporting point; and pressing means (44, 46) which presses the support piece downward. The tip of the support piece is located close to and faces an upper surface of the handset.SELECTED DRAWING: Figure 4

Description

The present invention relates to a telephone device equipped with a handset and a housing case, and relates to a technique effective for use in, for example, an emergency telephone device used in a disaster prevention monitoring system (including a fire alarm system).

In the disaster prevention monitoring system, an emergency telephone device is installed at the monitoring center, etc., so that when a fire occurs, the first caller near the fire site can use a handset on a handset to confirm the situation at the scene. In general, an emergency telephone device (base unit) starts the ring tone of the base unit when the handset on the handset side is operated off-hook, stops the ring tone when the handset is operated off-hook on the base unit side, and connects the handset with the base unit. It is configured to open a communication line between the handset and the receiver on the handset side, so that calls can be made between the base unit and the handset.

However, if the handset of the emergency telephone device (base unit) is disconnected for some reason, the emergency telephone device standard indicates that the handset is off-hook by lighting a lamp. If the handset of the handset goes off-hook in such a situation (a call request is made due to a fire outbreak), both the handset and the handset of the handset go off-hook, causing a fire to occur from the handset on the handset side. The call line becomes open (a state where calls can be made) without the ringtone for the call request accompanying the call sounding. In this case, on the base unit side, the ring tone of the call request due to the fire outbreak from the slave unit does not sound, and a situation arises in which the user does not notice the incoming call (call request due to the fire outbreak) from the slave unit side.

The main reason why the handset of an emergency telephone device comes off is that when the handset is placed vertically, the concave part formed at the boundary between the upper earpiece and the center handle cannot be placed on the stand. This is because the handset is simply attached so that it is caught on a protrusion (step) provided on the main body (cradle), so if some force is applied directly or indirectly to the handset, the handset will not fall off or fall off. It may shift from the correct mounting position. For example, if the handset is unintentionally touched by a worker's (supervisor's) shoulder or elbow or by an object, if the door of a device equipped with an emergency telephone device is opened or closed, or if vertical vibration is applied due to an earthquake, etc. In such a case, the handset may become detached from the attachment part of the telephone body or may shift from its correct attachment position.

Therefore, for the telephone device on the base side of an emergency call system, there is a demand for a structure that prevents the handset from coming off (falling off or shifting) from the telephone body. In order to prevent the handset from falling off, patent documents 1 and 2 disclose an invention in which a telephone holding device or a pressing part (plate-shaped elastic member) is provided above the handset to press it toward the hook below. There is.

Japanese Patent Application Publication No. 2002-27068 JP2022-10911A

However, in the telephone devices of the inventions of Patent Documents 1 and 2, the telephone device holder and the pressing portion are configured to be inclined downward from the mounting surface of the stand (cradle) toward the front. When taking out the handset, it is necessary to lift it horizontally or diagonally while pulling it out, and the pressure from the phone holder or pressing part may affect the ability to remove the handset while lifting it horizontally or diagonally. Become. Conversely, when placing the handset on a stand (cradle), it is necessary to press the handset while pushing up the telephone holder or pressing part at the top of the handset. This will also affect the installation operation. Furthermore, in the telephone devices of the inventions of Patent Documents 1 and 2, the telephone holding tool and the pressing part are in contact with the upper part of the handset, and pressing force is constantly applied to the upper part of the handset. There is a problem that the upper part is easily damaged.

The present invention has been made with attention to the above-mentioned problems, and its purpose is to make it difficult for the handset to come off (fall off or shift), and to make it easy to take out and put on the handset. The purpose is to provide emergency telephone equipment.
Another object of the present invention is to provide an emergency telephone device in which the upper part of the handset is less likely to be damaged even if it is provided with a function to prevent the handset from coming off.

In order to solve the above problems, the invention of this application is
An emergency telephone device comprising a handset, a cradle on which the handset is at least partially placed in a vertical position, and a box-shaped housing case that houses the handset and the cradle,
A support piece is attached to the upper wall of the storage case so as to be inclined downward from the front side of the storage case toward the rear, and the tip thereof is movable up and down with the base side as a rotation fulcrum; and a pressing means for pressing downward, and the tip of the support piece is configured to be close to and opposite to the top surface of the handset.

According to the emergency telephone device having the above configuration, since the support piece is provided whose tip is close to and faces the upper surface of the handset, it is difficult for the handset to come off (fall off or shift). In addition, the support piece is arranged so as to be inclined downward from the front side of the storage case toward the rear, and the tip moves up and down using the base side as a rotation fulcrum. Compared to the case where the handset is disposed so as to be inclined downwardly toward the front, it is easier to take out and put on the handset.

Here, desirably, a projection is provided on the upper surface of the cradle, and an engagement recess that can be engaged with the projection is formed on the lower surface of the receiver of the handset,
When the handset is attached to a predetermined position of the cradle, the protrusion is engaged with the engagement recess, thereby preventing the handset from shifting;
The support piece has a horizontal portion at its tip, and the horizontal portion and the upper surface of the handset are set to face each other with a distance smaller than the height of the projection.

According to the above configuration, the horizontal part of the tip of the support piece and the top surface of the handset face each other at a distance smaller than the height of the protrusion for locking the handset. This prevents the handset from coming off the protrusion. Furthermore, since the tip of the support piece and the top surface of the handset are always apart and do not come into contact with each other, it is possible to prevent the top of the handset from being scratched.

Furthermore, desirably, the pressing means is a compression coil spring inserted between the horizontal portion of the tip of the support piece and the upper wall of the storage case.
According to this configuration, when the handset is lifted due to vibration etc., the horizontal part at the tip of the support piece presses against the top of the handset and the optimum force to prevent it from lifting is compared with the repulsive force of the spring. Easy to set up.

Further, desirably, the support piece includes a receiving metal fitting fixed to the upper wall of the storage case and rotatably supporting the base side,
At least one of the support piece or the receiving metal fitting is formed of a ferromagnetic material,
A magnet is attached to the base side of the support piece or the receiving metal fitting, and the magnetic force of the magnet is configured to apply a force in a direction to lower the tip of the support piece.

According to the above configuration, when the handset is removed from or placed on the cradle, the top of the handset hits the bottom surface of the support piece and the ferromagnetic material that was attracted to the magnet is removed. If the support piece or holder made of material separates even slightly from the magnet, the force pressing against the top of the handset will suddenly weaken, so the pressing force to prevent the handset from lifting up will be reduced when removing the handset. Since it does not create a large resistance to the operation of attaching the handset, it is possible to easily perform operations for detaching and attaching the handset.

According to the handset storage box of the emergency telephone device of the present invention, the handset is less likely to come off (fall off or shift), and the handset can be easily removed and attached. Further, even if a function to prevent the handset from falling off is provided, the upper part of the handset is less likely to be scratched.

1 is a front view showing an embodiment of an emergency telephone device according to the present invention. (A) is a front view showing a configuration example of an emergency telephone unit constituting the emergency telephone device of the embodiment, and (B) is a cross-sectional side view taken along BB in (A). FIG. 2 is a perspective view showing an off-hook state of a telephone unit constituting the emergency telephone device of the embodiment. This figure shows a first example of a mechanism for preventing floating of a handset provided in a handset storage box constituting an emergency telephone device according to an embodiment, and (A) is an enlarged side view of a main part showing an on-hook state of a handset. FIG. 2B is an enlarged side view of the main parts showing the off-hook state of the handset. The details of the parts constituting the floating prevention mechanism of the first embodiment are shown, in which (A) is a perspective view showing a state in which the parts are assembled, and (B) is an exploded perspective view of the components. This figure shows a second embodiment of the handset lifting prevention mechanism provided in the handset storage box constituting the emergency telephone device of the embodiment, and (A) is an enlarged side view of the main part showing the on-hook state of the handset. FIG. 2B is an enlarged side view of the main parts showing the off-hook state of the handset. The details of the parts constituting the floating prevention mechanism of the second embodiment are shown, in which (A) is a perspective view showing a state in which the parts are assembled, and (B) is an exploded perspective view of the components. (A) is an enlarged side view of the main part showing the gap between the support piece constituting the floating prevention mechanism in the emergency telephone device of the embodiment and the upper part of the handset, and (B) is the main part showing a modification of the support piece. FIG.

Embodiments of the present invention will be described below with reference to the drawings.
The emergency telephone device of this embodiment is installed in a monitoring center or the like located in a corner of a building, and has the function of making calls with handsets installed at various locations within the building.
FIG. 1 shows an embodiment of an emergency telephone device. FIG. 1 is a front view of an emergency telephone device installed in a monitoring center or the like.
As shown in FIG. 1, the emergency telephone device 10 of this embodiment includes a vertically long box-shaped metal casing 11 having an opening/closing door 11A on the front, and a part of the opening/closing door 11A (in the figure, slightly from the center). The main part of the emergency telephone device (hereinafter referred to as an emergency telephone unit) 12 is fitted into a rectangular opening 11a formed in the upper position.

The emergency telephone unit 12 includes a metal front panel 21 that is flush with the front panel forming the opening/closing door 11A, and a telephone unit fitted into a vertically long rectangular opening 21a formed on the left side of the front panel 21. 22 and an operation display section 23 fitted into a substantially square opening 21b formed on the right side of the front panel 21. It is accommodated. Note that the telephone unit 22 can be used either as an emergency telephone device serving as a base device or as a slave device.

FIG. 2 shows details of the emergency telephone unit 12. Of these, (A) is a front view of the emergency telephone unit 12, and (B) is a cross-sectional side view taken along BB in (A).
As shown in FIG. 2(A), the operation display unit 23 includes a speaker 31 that emits an alarm sound when a fire alarm is issued, an LCD (liquid crystal display), etc. for displaying various information related to the fire alarm. an information display section 32 consisting of an information display section 32, a push button for stopping the fire alarm sound, an information button for displaying the details of the fire, abnormalities, etc. on the information display section 32, a test switch button for conducting a test, etc. It includes an input operation section 33 having various function buttons.

On the other hand, as shown in FIG. 2(B), the emergency telephone unit 12 includes a pedestal portion 25B fixed to the rear wall of the storage case 24 with screws, and a support integrally formed on the front surface of the pedestal portion 25B. A pedestal 25 consisting of a portion 25A, a handset 26 joined and placed on the front surface of the pedestal 25, and a curl cord 27 whose end connectors are connected to the pedestal 25 and the handset 26, respectively. . As can be seen from FIG. 2, the emergency telephone unit 12 of this embodiment is of a type in which a handset 26 is placed vertically and mounted on a cradle 25.

In the emergency telephone unit 12 of this embodiment, although not particularly limited, the depth of the housing case 24 is such that the depth of the housing case 24 is such that the rear wall of the housing case 24 is in an on-hook state with the handset 26 placed on the front surface of the cradle 25. The height is set to be several mm larger than the height from the front surface of the handset 26 to the front surface of the handset 26. As a result, the front surface of the handset 26 is located further back than the front panel 21, and is prevented from protruding to the front surface of the housing 11.
Moreover, in the emergency telephone unit 12 of this embodiment, the inside of the front edge wall 24c provided at the lower front end of the storage case 24 is located at an angle of about 45 degrees toward the rear wall side of the storage case 24 when viewed from the side. A trapezoidal guiding member 28 having a downwardly sloping slope is provided.

Further, the connector at one end of the curl cord 27 is located at approximately the middle height position of the cradle 25, and the distance from the connector at the one end to the bottom wall of the housing case 24 is such that the distance between the handset 2 It is set to be approximately the same as the length in the vertical direction (approximately 20 cm).
Further, the upper wall of the storage case 24 is set to be higher than the upper end of the handset side of the handset 26 placed on the cradle 25 by the diameter of the curled portion of the curl cord 27, and the guide member inside the storage case 24 The distance L0 from the intermediate height position of 28 to the rear wall of the storage case 24 is set to be approximately twice (for example, 30 mm) the diameter of the curled portion of the curl cord 27 (for example, 15 mm).

As a result, a space is formed between the inclined surface of the guiding member 28 and the rear wall to the bottom wall of the storage case 24, which can be sufficiently stored even if the curled portion of the curled cord 27 is folded back, doubled, and stored horizontally. has been done. The width of the storage case 24 (the length in the left-right direction when viewed from the front) is the width of the folded part when the curled cord 27 is stored in the storage space with the curled part laid down and folded back only once. It is set so that the outside touches or does not touch the inner surface of the side wall of the storage case 24. Thereby, the restoring force of the curled portion of the curled cord 27 acts to push up the handset 26 and prevents it from coming off the cradle 25.

Further, by providing the guide member 28, when the curled portion of the curl cord 27 is stored in the storage space behind the guide member 28 with the curled part laid down horizontally and folded back only once, the appearance is different from the storage space from the front. The curl cord 27 can be made almost invisible. Therefore, the curled cord 27 hanging from the handset 26 does not extend beyond the front panel 21 of the emergency telephone unit 12, and a part of the body of a moving person or an article being transported may come into contact with the handset. 26 can be prevented from coming off from the pedestal 25. Further, it is possible to prevent the curled portion of the curled cord from stretching due to its own weight.

Moreover, in the emergency telephone unit 12 of this embodiment, as shown in FIG. Although not shown, an engagement recess that can be engaged with the protrusion 29 is formed on the lower surface of the receiver section 26A of the handset 26. Since the handset 26 is attached in such a manner that the engagement recess of the handset 26A of the handset 26 is hooked onto the protrusion 29, even if a relatively small vibration is applied to the handset 26 in a vertical telephone unit, the handset 26 will not move. It is possible to prevent it from coming off the pedestal 25 and falling off or shifting. Note that a switch for detecting an off-hook state may be provided in an engagement recess that can be engaged with the projection 29 on the lower surface of the receiver section 26A.

Furthermore, in the emergency telephone unit 12 of this embodiment, a lifting prevention mechanism is provided above the handset 26 to prevent the handset 26 from lifting up.
FIG. 4 shows a first embodiment of the floating prevention mechanism 40, and FIG. 6 shows a second embodiment of the floating prevention mechanism 40. As shown in FIGS. 4 and 6, the floating prevention mechanism 40 has one end locked to the front edge of the upper wall of the storage case 24, slopes downward toward the rear (to the left in the figure), and has a distal end. They each include a support piece 41 disposed near the top surface of the handset 26, and the support pieces 41 have a horizontal portion at each end and a sloped portion in the middle. The angle of the inclined portion of the support piece 41 with respect to the horizontal plane may be in the range of 30 degrees to 50 degrees, and a preferred angle is 45 degrees.

Hereinafter, detailed configurations and effects of the floating prevention mechanism 40 of the first embodiment shown in FIG. 4 and the floating prevention mechanism 40 of the second embodiment shown in FIG. 6 will be explained in order.
The floating prevention mechanism 40 of the first embodiment shown in FIG. A receiving metal fitting 42 is fixed to the front edge of the upper wall of the case 24 in a horizontal position at a predetermined distance from the upper wall of the housing case 24, and a horizontal part of the tip side (lower end side) of the support piece 41 is housed. It includes a compression coil spring (hereinafter referred to as a compression spring) 44 inserted between the upper wall of the case 24 and the upper wall of the case 24 . Note that a screw hole (female thread) into which the screw 43 is screwed is formed at a predetermined portion of the upper wall of the storage case 24, and the screw 43 is passed through the spacer portion 42a from below, and the screw hole on the upper wall of the storage case 24 is inserted into the screw hole (female screw). It may be configured to be screwed into a hole. Thereby, the receiving metal fitting 42 can be easily fixed.

A through hole that loosely fits into the spacer portion 42a is formed in the horizontal part of the base end side (upper end side) of the support piece 41, and the distal end side of the support piece 41 can swing in the vertical direction with the base end side as a fulcrum. It is composed of Furthermore, the horizontal portion on the tip side of the support piece 41 and the upper surface of the handset 26 are configured to be separated by a predetermined distance δ, as shown in FIG. 8(A). Note that the interval δ is set to a value smaller than the height (for example, 3 mm) of the protrusion 29 on the pedestal 25 side.
Note that the shape of the tip end side of the support piece 41 may be a curved surface as shown in FIG. 8(B). When the tip end side of the support piece 41 is curved as shown in FIG. 8(B), the area in contact with the support piece 41 when the handset 26 is attached or detached can be reduced, and the support piece 41 when the handset 26 is attached or detached can be reduced. The impact of this can be reduced.

With the above configuration, even if the handset 26 vibrates up and down due to an earthquake or the like, the tip of the support piece 41 will hit the top surface of the handset 26, thereby exceeding the height of the protrusion 29 of the handset 26. It can prevent floating. Therefore, it is possible to prevent the handset 26 from coming off the cradle 25 or shifting from its normal position.
Further, a gap of δ is provided between the horizontal part on the tip side of the support piece 41 and the top surface of the handset 26, so that the tip of the support piece 41 does not always come into contact with the top surface of the handset 26. Therefore, it is possible to prevent the top surface of the handset 26 from being scratched. Furthermore, the floating prevention mechanism of this embodiment can be additionally installed in the handset storage box of an existing emergency telephone device.

During normal use, as shown in FIG. 4(B), when the handset 26 is lifted, the compression spring 44 contracts and the distal end of the support piece 41 moves upward, causing the support piece 41 to rotate and transmit. By moving the upper part of the handset 26 along the lower surface of the slope of the support piece 41, the handset 26 is removed from the cradle 25.
Conversely, when placing the handset 26 on the cradle 25, the upper part of the handset 26 is brought into contact with the lower surface of the inclined part of the support piece 41, and when pushed forward, the upper part of the handset 26 is placed on the support piece 41. The engaging recess on the handset 26 side moves to a predetermined position where it engages with the protrusion 29 on the cradle 25 side. Note that the optimum pressing force by the compression spring 44 will be explained in detail later.

5(A) and 5(B) show the detailed structure of parts constituting the floating prevention mechanism 40 shown in FIG. 4. Of these, (A) is a perspective view showing a state in which the parts are combined, and (B) is an exploded perspective view of the constituent parts.
As shown in FIG. 5(B), two cylindrical spacer portions 42a are provided on the upper surface of the receiving fitting 42, and two spacer portions are provided on the horizontal portion of the base end side of the support piece 41. Two through-holes 41a are formed into each of the through-holes 42a, which fit loosely into each of the through-holes 42a.

On the other hand, a protruding part 42b is formed at the rear end of the receiving fitting 42, the proximal end of the support piece 41 is bent downward, and the corner part is slightly larger than the protruding part 42b. An opening 41b is formed, and the opening 41b on the proximal end side of the support piece 41 is engaged with the protruding part 42b at the rear end of the receiving metal fitting 42, so that the support piece 41 moves in the vertical direction using this engagement part as a fulcrum. It is configured to be able to swing.
Furthermore, a vertical piece 41c is erected on the horizontal part of the distal end side of the support piece 41 by cutting and raising the vertical piece 41c, and a compression spring 44 is inserted into the vertical piece 41c. Functions as a guide post to support vertically. Further, a washer 45 is inserted between the lower end of the compression spring 44 and the horizontal portion on the distal end side of the support piece 41.
Furthermore, even when the tip side of the support piece 41 is curved as shown in FIG. 8(B), a cut and raised portion may be provided on the tip side of the support piece 41 as in FIG. 5(B) to form a guide post. .

Next, the detailed structure and effects of the floating prevention mechanism 40 of the second embodiment shown in FIG. 6 will be explained. Note that FIGS. 7(A) and 7(B) show the detailed structure of the parts constituting the floating prevention mechanism 40 shown in FIG. 6. Of these, (A) is a perspective view showing a state in which the parts are combined, and (B) is an exploded perspective view of the constituent parts.

The floating prevention mechanism 40 shown in FIG. 6 has a structure on the fulcrum side similar to the floating prevention mechanism of the first embodiment shown in FIG. A receiving metal fitting 42 is provided which is fixed to the front edge of the upper wall of the housing case 24 in a horizontal position with a predetermined distance from the upper wall of the housing case 24 by a screw 43 screwed into the housing case 24 . However, there is no compression spring 44 inserted between the horizontal part on the distal end side (lower end side) of the support piece 41 and the upper wall of the storage case 24, and instead, the compression spring 44 is inserted between the horizontal part on the distal end side (lower end side) of the support piece 41 and A magnet 46 is fixed to the lower surface of the horizontal portion. Further, the support piece 41 is made of a ferromagnetic material that is attracted to a magnet. Instead of forming the support piece 41 from a ferromagnetic material, the receiving metal fitting 42 may be formed from a ferromagnetic material, or both the support piece 41 and the receiving metal fitting 42 may be formed from a ferromagnetic material. .

Further, as shown in FIG. 7B, a through hole 41a that loosely fits into the spacer portion 42a is formed in the horizontal portion of the base end side (upper end side) of the support piece 41, and the support piece 41 is attached to the base end side (upper end side). The distal end side is configured to be swingable in the vertical direction using the end side as a fulcrum. Further, a protruding portion 42b is formed at the rear end of the receiving fitting 42, and the proximal end of the support piece 41 is bent downward, and a magnet is inserted from the proximal lower surface of the support piece 41 at the bent portion. An opening 41b that is one size larger than the protrusion 42b is formed below the thickness of 46, and the opening 41b on the proximal end side of the support piece 41 is engaged with the protrusion 42b on the rear end of the receiving fitting 42. Thus, the support piece 41 is configured to be able to swing in the vertical direction using this engaging portion as a fulcrum.

Further, the horizontal part on the tip side of the support piece 41 and the upper surface of the handset 26 are separated by a predetermined distance δ, as shown in FIG. 8(A), as in the floating prevention mechanism of the first embodiment. It is configured. Note that the interval δ is set to a value smaller than the height (3 mm) of the protrusion 29 on the pedestal 25 side.
Note that the shape of the tip end side of the support piece 41 may be a curved surface as shown in FIG. 8(B). As shown in FIG. 8(B), when the shape of the tip end of the support piece 41 is curved, the area in contact with the support piece 41 when the handset 26 is attached or detached can be reduced, and the support piece 41 when the handset 26 is attached or detached can be reduced. The impact of this can be reduced.

The floating prevention mechanism 40 of the second embodiment uses the suction force of the magnet 46 instead of the spring force of the compression spring 44 in the floating prevention mechanism of the first embodiment, and the operation is almost the same. Therefore, detailed explanation will be omitted.
Next, the optimum pressing force of the support piece 41 by the spring force of the compression spring 44 or the suction force by the magnet 46 will be explained.

The present inventors studied the conditions necessary for the support piece 41 to apply a pressing force to the upper part of the handset 26 so that the handset 26 does not come off the receiver 25 even in the event of an earthquake. In general seismic design, if the design horizontal seismic intensity is 1, the design vertical seismic intensity Kv is 0.5.
When the weight Z of the handset 26 is 150 g, assuming that the design vertical seismic coefficient is Kv and the coefficient for converting the weight into Newtons is W (9.8), the vertical seismic force Fv is calculated by the following formula: Vertical seismic force Fv = Z x Kv ×W……(1)
It is expressed as

Since the design vertical seismic coefficient Kv is 0.5 as mentioned above, if the weight Z of the handset 26 is 150 g (0.15 kg), from the above formula (1),
Vertical seismic force Fv=0.15×0.5×9.8=0.735(N)
becomes. Here, if the safety factor (margin) is 1.3 and the pressing force required to prevent the handset 26 from lifting due to earthquake vibration is F, then
F=0.735×1.3=0.9555≒1(N)≒100(gf)
becomes. Therefore, in the case of the first embodiment, the pushing up force applied to the handset 26 due to vibrations caused by an earthquake is reduced by setting the repulsive force by the compression spring 44 to approximately 100 (grams in weight) and applying it to the handset 26 via the support piece 41. It can be seen that this can be suppressed by applying the pressing force of the spring.

On the other hand, in the case of the second embodiment in which a magnet is used to prevent the handset 26 from coming off, if the total length of the support piece 41 is L1, and the distance from the pivot point to the magnet 46 is L2, then there is a The suction force Fm of the magnet 46 required to fix the base side of the support piece 41 so that a pressing force F of (N) can be applied is determined by the following formula based on the lever principle: Fm=F×(L1 /L2) ...(2)
It is expressed as Here, assuming that L1 is 43 mm and L2 is 13 mm, from the above formula (2), Fm = 1 × (43/13) = 3.3 (N) = 330 (gf)
becomes. Therefore, the attractive force of the magnet required to prevent the handset 26 from lifting due to vibrations caused by an earthquake is 330 (gf).

In the emergency telephone device of this embodiment that employs the floating prevention mechanism 40 having the above-described structure, by setting the repulsive force of the compression spring 44 and the attractive force of the magnet 46 as described above, it is possible to prevent earthquakes, etc. Even if the handset 26 vibrates up and down, the tip of the support piece 41 hits the top surface of the handset 26 to prevent the handset 26 from lifting up, preventing the handset 26 from coming off the cradle 25 or returning to its normal position. This can prevent it from shifting.

Although the invention made by the present inventor has been specifically explained based on the embodiments above, the present invention is not limited to the embodiments. For example, in the embodiment, the protrusion 42b is provided at the rear end of the receiving metal fitting 42, and the opening 41b, which is slightly larger than the protrusion 42b, is formed at the proximal end of the support piece 41. , the support piece 41 is configured to be able to swing by engaging the protrusion 42b of the receiving metal fitting 42 with the opening 41b on the base end side of the support piece 41; A pin shaft may be provided on the side, and a support piece having a shaft hole may be provided in the receiving metal fitting 42 so that the support piece 41 can swing.

Further, in the embodiment described above, the compression spring 44 or the magnet 46 is used in order to provide the floating prevention mechanism 40 with a pressing force, but by forming the support piece 41 as a plate spring from spring steel, the pressing force can be applied. It is also possible to configure it so that it has. Also in this case, since the direction of the support piece (plate spring) 41 is opposite to that of the conventional one, there is an advantage that when the handset 26 is attached to the cradle 25, it does not act as a resistance but functions as a guiding member. be.
Further, in the embodiment described above, an example has been described in which the floating prevention mechanism 40 is attached to the front edge (top plate) of the upper wall of the storage case 24, but the present invention is not limited to this. For example, the above-described floating prevention mechanism 40 may be attached to the upper side of the storage case 24, or it may be fixed to one side wall of the upper side of the storage case 24 or between the left and right side walls. It may be attached to the front and upper surface plate of the storage case 24.
Furthermore, in the embodiment described above, a curl cord 27 is provided to connect the handset 26 and the cradle 25, but if the handset uses a wireless communication method, the curl cord 27 is unnecessary and the housing case 24 may be anything that accommodates a handset and its cradle.

Furthermore, the emergency telephone device of the present invention is not limited to being provided on the front surface of a vertically elongated casing as in the embodiment shown in FIG. Those that can be attached to the front panel of a low housing or part of a fire receiver, those that can be attached as a handset to the front panel of an equipment storage box or emergency alarm equipment equipped with a fire transmitter and a bell or speaker, and even emergency telephones. The unit may be installed alone on the wall of a building as a child device.

10 Emergency telephone device 11 Housing 11A Opening/closing door 12 Emergency telephone unit 21 Front panel 21a, 21b Opening 22 Telephone unit 23 Operation display section 24 Housing case 24c Front edge wall 25 Rest 25A Support section 25B Pedestal section 26 Handset 27 Curl Cord 28 Guiding member 29 Protrusion 40 Anti-float mechanism 41 Support piece 42 Receiver 43 Screw 44 Compression spring 45 Washer 46 Magnet

Claims (4)

An emergency telephone device comprising a handset, a cradle on which the handset is at least partially placed in a vertical position, and a box-shaped housing case that houses the handset and the cradle,
A support piece is attached to the upper wall of the storage case so as to be inclined downward from the front side of the storage case toward the rear, and the tip thereof is movable up and down with the base side as a rotation fulcrum; An emergency telephone device comprising: a pressing means for pressing downward, and a tip of the support piece faces closely to the top surface of the handset. A projection is provided on the upper surface of the cradle, and an engagement recess that can be engaged with the projection is formed on the lower surface of the receiver of the handset,
When the handset is attached to a predetermined position of the cradle, the protrusion is engaged with the engagement recess, thereby preventing the handset from shifting;
1. The support piece has a horizontal portion at its tip, and the horizontal portion and the upper surface of the handset are set to face each other with a distance smaller than the height of the protrusion. emergency telephone equipment as described in . The emergency telephone device according to claim 2, wherein the pressing means is a compression coil spring inserted between the horizontal portion of the tip of the support piece and the upper wall of the storage case. The support piece is fixed to the upper wall of the storage case and includes a receiving metal fitting that rotatably supports the base side,
At least one of the support piece or the receiving metal fitting is formed of a ferromagnetic material,
A magnet is attached to the base side of the support piece or the receiving metal fitting, and the magnetic force of the magnet is configured to apply a force in a direction to lower the tip of the support piece. or the emergency telephone device described in 2.

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