JPH06291820A - Cover opening / closing detection mechanism for radio telephon system - Google Patents

Abstract

PURPOSE:To provide the cover opening/closing detection mechanism for a small- sized easily waterproofable radio telephon system by constituting the cover opening/closing detection mechanism by the contact of the contact points of a key sheet and a substrate. CONSTITUTION:When a cover 2 is closed, a projection 8 provided on the cover 2 presses a cover opening/closing detection button 17 integrally provided on the key sheet 16 and it is detected that the cover 2 is closed by the contact of a first contact point 18 on the side of the key sheet 16 and a second contact point 21 on the side of the substrate 11. Also, when the cover 2 is opened, the depressed state of the button 17 is cancelled and the contact of both contact is released by the elastic recovery of the entire key sheet 16. Also, since the cover opening/closing detection mechanism is constituted in such a manner, it is not required to directly form a hole in a casing 10 and water and bust are prevented from intruding inside the casing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid opening / closing detecting mechanism for a portable radio telephone, which is constructed so that an operating portion of the telephone is covered with a lid when being carried.

[0002]

2. Description of the Related Art In recent years, wireless telephone devices of this type have been frequently used because of their convenience. In addition, portability is becoming more important for this wireless telephone, which makes it more compact and
Weight reduction is progressing.

An opening / closing mechanism for a lid of a conventional radiotelephone device will be described below with reference to the drawings. FIG. 4 is an external view of a conventional radiotelephone device with a lid closed. In FIG. 4, 1 is a radiotelephone device main body, 2 is a lid that covers an operation unit, 3 is a receiver, and 4 is a receiver. It is a hinge that serves as a rotation shaft for rotatably installing the lid 2.

When using the above-mentioned wireless telephone device, the lid 2 is rotated about the hinge 4 so that the lid 2 is opened as shown in FIG. In FIG. 5, 5 is an operation key,
Number keys for inputting telephone numbers (so-called 12 keys),
It consists of a power key and function keys for using additional functions such as redial and hold. Reference numeral 6 is a transmitter portion, 7 is a hole provided in the operation portion, and 8 is a projection body provided so as to be inserted into the hole 7 when the lid 2 is closed. The transmitter 6 may be provided in the lower portion 9 of the main body of the wireless telephone device. In addition, although the radio telephone is equipped with an antenna, a display unit, etc., the illustration thereof is omitted here.

By thus providing the lid 2 so that it can be folded, the total length of the wireless telephone device can be shortened while being carried, and malfunction of the operation keys 5 can be prevented.
In addition, since the lid extends to the user's mouth during use, it has the characteristic that it can be used with the same feeling as a normal-sized handset used in wired telephone devices, etc. Also, since it is easy to give the characteristic, a structure having such a lid opening / closing mechanism is often adopted.

Next, the operation of the conventional radiotelephone device configured as described above will be described. In many cases, a wireless telephone device provided with a lid as described above is provided with a lid opening / closing detection mechanism, and the lid opening / closing detection mechanism terminates a call by opening the lid or closing the lid. Alternatively, a function is added to increase the convenience of the user, such as switching the operation mode for a call according to the opening / closing operation of the lid. Two examples of conventional lid opening / closing detection mechanisms for wireless telephone devices will be described below.

FIG. 6 shows a first example of a lid opening / closing detection mechanism of a conventional radiotelephone device, and is a cross-sectional view with the lid 2 closed. In FIG. 6, reference numeral 10 denotes a housing of the main body of the wireless telephone device,
Reference numeral 11 is a board fixed in the housing 10, and 12 is a detection switch provided on the board 11, which is mounted immediately below the hole 7. Reference numeral 13 is an arrow indicating the direction of rotation when the lid 2 is opened.
When the lid 2 is closed, the protrusion 8 is inserted into the hole 7 and the detection switch 12 is pushed. The pressing of the protrusion 8 detects that the lid 2 is closed.

FIG. 7 is a cross-sectional view of the first example of the lid opening / closing detection mechanism of the above-described conventional radiotelephone apparatus in a state where the lid 2 is opened. At this time, it is detected that the detection switch 12 is opened by pressing the protrusion 8 and the lid 2 is opened.

Next, another example of the lid opening / closing detecting mechanism in the conventional radio telephone will be described with reference to FIG. In this example, the lid opening / closing detection mechanism is configured in the hinge 4. FIG. 8 is a sectional view of a second example of the lid opening / closing detection mechanism portion of the hinge 4. In FIG. 8, 14 is a notch provided in the hinge 4 and rotates together with the lid 2. The hinge 4 is formed in a cam shape by the notch 14, and the hinge 4 rotates to push up the detection switch 12 to detect opening / closing of the lid 2.

[00010]

However, in the above-mentioned conventional lid open / closed detection mechanism, since the detection switch is used, the entire mechanism is enlarged, and since the housing is provided with a hole for operating the detection switch, waterproofing is not possible. It has a problem that it is difficult to apply and the waterproofness and dustproof performance are deteriorated. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above conventional problems and to provide a lid opening / closing detection mechanism for a wireless telephone device that is small and easy to waterproof.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is such that the lid covers the main body operation portion when being carried, and the lid is pivoted and opened during use to expose the main body operation portion. In the configured wireless telephone device, the protruding operation keys on the key sheet and the head of the lid opening / closing detection button integrally formed on the key sheet are exposed from the hole opened in the main body operation section, and the key is A first contact is provided on the back side of the lid open / close detection button on the seat, and a second contact is provided on the substrate arranged behind the key sheet so as to face the first contact. When the protrusion formed on the lid closes the lid, the lid opening / closing detection button on the key sheet is pressed through the hole of the main body operation portion to press the first contact of the key sheet and the second contact of the substrate. Contact the contacts of the It is a lid opening / closing detection mechanism of a radiotelephone device, characterized in that the contact between the contacts is opened by the resilience of the key sheet when the key sheet is opened. The lid is provided with a protrusion for pressing the lid open / close detection button.

[0012]

Therefore, in the structure of the present invention, when the lid is closed, the protrusion provided on the lid pushes the lid open / close detection button integrally provided on the key sheet, and the first sheet on the key sheet side is pressed.
The contact between the contact of the cover and the second contact on the board side detects that the lid is closed. Further, when the cover is opened, the pressing force of the cover open / close detection button is released and the key sheet is released. Due to the elastic recovery of the whole, the contact between the first contact and the second contact on the substrate side is released. In addition, because the lid opening / closing detection mechanism is configured by the contact between the key sheet and the contact of the board, instead of separately providing a detection switch,
Since it is not necessary to directly form holes in the housing, water and dust are prevented from entering the inside of the housing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of the present invention. In FIG. 1, reference numeral 15 is a hole provided in an operation portion of the main body of the wireless telephone device, from which an operation key 5 is provided.
Is exposed. Reference numeral 16 is a key sheet formed of elastic rubber, 17 is a lid opening / closing detection button, and the operation keys 5 and the lid opening / closing detection button 17 are formed on the key sheet 16 in a protruding shape. Reference numeral 18 is a second contact formed on the substrate, and the hole 7, the open / close detection button 17 and the contact 18 are positioned so as to overlap each other when viewed from the direction of the arrow 19.

FIG. 2 is a cross-sectional view of the present embodiment with the lid 2 closed, and 20 is a rib provided on the periphery of the holes 7 and 15 inside the housing 10 of the radiotelephone device. Yes,
Reference numeral 21 is a first contact provided on the back surface of each operation key 5 and the lid opening / closing detection button 17 on the surface of the key sheet 16 facing the substrate 11. Therefore, when the operation key 5 is pressed, the first
The contact 21 and the second contact 18 contact each other, and conduction is obtained. When the force applied to the operation keys 5 is removed, the key sheet 16
The elasticity of the operation key 5 restores it by its elasticity, and the conduction is cut off. As described above, the key sheet 16 and the substrate 11 function as a lid open / close detection switch.

In this state, the projection 8 is inserted through the hole 7 and the lid open / close detection button 17 is pushed in, and the first contact point
The 18 and the second contact 21 are in contact with each other to establish conduction.

FIG. 3 is a sectional view when the lid 2 is open in this embodiment. At this time, the lid opening / closing detection switch is restored by the elasticity of the key sheet 16 itself, the first contact and the second contact are separated, and the conduction is cut off. By the above operation, the first contact 18 on the back side of the lid opening / closing detection button 17 and the second contact on the substrate are opened or closed depending on whether the lid 2 is opened or closed.
Since the conduction of 21 changes, this conduction change can be used as the opening / closing detection means of the lid 2. Further, the rib 20 is strongly pressed against the key sheet 16 and acts so as to prevent water and dust from entering the inside of the housing.

In the present embodiment, the lid opening / closing detection button 17
The lid opening / closing detection button is set by making the head of the device lower than the operation surface of the housing 10 and making the hole 7 large enough for fingers and the like not to enter.
17 is not pushed carelessly, and malfunctions are reduced. Further, since the key sheet 16 is kept pressed for a long time, it is necessary to consider such as selecting a material that does not change with time.

In the lid opening / closing detecting mechanism, the lid opening / closing detecting section and the operating section are integrally formed, so that the number of parts is reduced, the cost is reduced, and the board 11 is mounted in the assembling work of the wireless telephone device. Install the housing 10 and the key sheet 16
The lid opening / closing detection mechanism can be configured only by inserting the lid, and the labor for mounting the lid opening / closing detection switch 12 on the substrate as in the conventional case is omitted, so that the assembling workability is greatly improved.

A key sheet is provided between the substrate 11 and the housing 10.
Since it is only necessary to provide a space for 16 to be stored, there is no need for a space for disposing the lid open / closed detection switch separately,
The lid opening / closing detection mechanism can be made thin. Further, since the substrate is completely shielded from the outside of the housing 10, the waterproof and dustproof effect can be further enhanced and formed.

[0020]

As described above, the present invention provides a radiotelephone device configured such that the lid covers the main body operation portion when being carried, and the lid is pivoted and opened during use to expose the main body operation portion. , The protruding opening operation key on the key sheet and the head of the lid opening / closing detection button integrally formed on the key sheet are exposed from the hole opened in the main body operation section, and the lid opening / closing detection button on the key sheet is exposed. On the back of the
And a second contact is provided on the substrate arranged behind the key sheet so as to face the first contact, and the projection formed on the lid covers the lid. When closed, the lid opening / closing detection button on the key sheet is pressed through the hole of the main body operation portion so that the first contact of the key sheet and the second contact of the substrate are brought into contact with each other, and the lid is closed. The lid opening / closing detection mechanism of the wireless telephone device is characterized in that the contact between the contacts is opened due to the resilience of the key sheet when opened. The protruding body pushes the lid open / close detection button integrally provided on the key sheet, and detects that the lid is closed by the contact between the first contact on the key sheet side and the second contact on the substrate side. Also, when the lid is open, the lid open / close detection button And in which contact of the first contact and the second contact of the substrate side by the by the pressure state is released key sheet total elastic restoration is opened.

Therefore, since the lid opening / closing detection mechanism is constituted by the contact between the key sheet and the contact point of the substrate instead of separately providing a detection switch for detecting the lid opening / closing as in the conventional case, it is necessary to form a hole directly in the housing. In addition to preventing water and dust from entering the inside of the housing of the wireless telephone device, it does not require a space for separately arranging a lid opening / closing detection switch as in the conventional case, and the lid opening / closing detection mechanism is made thin. The entire wireless telephone device can be thinned.

Further, since the lid opening / closing detection mechanism is constituted by the key sheet and the board, the number of parts of the radio telephone device can be reduced, the cost and weight of the device can be reduced, and the key sheet and the board can be realized. Since the lid opening / closing detection mechanism is formed only by the arrangement, it is possible to save the labor of installing the detection switch and to greatly improve the workability of assembling the wireless telephone device.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a lid opening / closing detection mechanism of a wireless telephone device according to an embodiment of the present invention,

FIG. 2 is a cross-sectional view of the wireless telephone device in FIG. 1 with the lid opening / closing detection mechanism closed.

3 is a cross-sectional view of the wireless telephone device shown in FIG. 1 with the lid open / closed detection mechanism open.

FIG. 4 is an external perspective view of a conventional wireless telephone device with its lid closed.

FIG. 5 is an external perspective view of a conventional wireless telephone device in a state where a lid is opened,

FIG. 6 shows a first lid opening / closing detection mechanism of a conventional wireless telephone device.
In the example, a sectional view with the lid closed,

FIG. 7 shows a first example of a lid opening / closing detection mechanism of a conventional wireless telephone device.
In the example, the cross-sectional view with the lid open,

FIG. 8 is a second example of a lid opening / closing detection mechanism of a conventional wireless telephone device.
Sectional view of the example.

[Explanation of symbols]

 1. Wireless telephone device body 2. Lid 3. Earpiece 4. Hinge 5. Operation key 6. Transmitter 7. Hole 8. Protrusion 9. Lower part of the wireless telephone unit 10. Housing 11. Substrate 12. Lid open / close detection switch 13. Arrow 14. Notch 15. Hole 16. Key sheet 17. Lid open / close detection button 18. First contact 19. Arrow 20. Rib 21. 2nd contact

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 13, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

Patent application title: Lid open / close detection mechanism for wireless telephone device

Claims (1)

[Claims] 1. A wireless telephone device configured such that a lid covers a main body operation section when being carried, and the lid is rotated and opened when being used to expose the main body operation section, which is opened in the main body operation section. The projection-shaped operation keys on the key sheet and the head of the lid opening / closing detection button integrally formed on the key sheet are exposed from the hole, and a first contact is provided on the back side of the lid opening / closing detection button on the key sheet. A second contact is provided on the substrate disposed on the back of the key sheet so as to face the first contact, and when the projection formed on the lid closes the lid. When the lid opening / closing detection button on the key sheet is pressed through the hole of the main body operation section to bring the first contact of the key sheet into contact with the second contact of the substrate, and when the lid is opened. Contact between the above contacts due to the resilience of the key sheet A lid opening / closing detection mechanism for a wireless telephone device, which is configured to be opened.