JP4336795B2 - Case opening / closing angle adjuster for foldable portable wireless terminals - Google Patents

Description

  The present invention relates to a case opening / closing angle adjuster of a foldable portable wireless terminal, and in particular, one side ends of a first case portion and a second case portion are connected by a hinge portion so as to be freely opened and closed. The present invention relates to a case opening / closing angle adjuster for a foldable portable wireless terminal that adjusts an opening / closing angle between a first case portion and a second case portion of a foldable portable wireless terminal such as a foldable portable telephone.

  Each side end of the first case with the microphone and various keys on the inner side and the second case with the display and speaker on the inner side is connected by a hinge that can be opened and closed In the foldable mobile phone having the above-described structure, there is a background that multifunctionality has been advanced in recent years, and the lengths of the first and second housing parts are relatively long. Therefore, the first and second housing parts are relatively long. In a use state in which the inner side surfaces of the body part are completely opened, the distance from the microphone provided on the inner side surface of the first housing part to the speaker provided on the inner side surface of the second housing part is There are cases in which the length from the user's mouth to the ear is exceeded (for example, it is considered to be particularly remarkable in children and women). In such a case, it is expected that the hardware specifications of the mobile phone itself cannot be fully utilized.

  Therefore, the following two methods can be considered as methods for solving this problem. The first method is a method that enables movement and adjustment of the speaker position and the microphone position itself, and the second method is a method that uses an existing function of adjusting the casing opening / closing angle of the mobile phone. is there. In order to adjust the housing opening / closing angle, conventionally, the rotation mechanism for adjusting the opening / closing angle of the hinge part is controlled to detect the reception level of the radio signal while changing the opening / closing angle of the hinge part within a certain range. A foldable mobile phone is known that includes a control mechanism that controls a rotation mechanism that maintains the opening / closing angle of the hinge so that the opening / closing angle at which the reception level is maximized is maintained (for example, Patent Document 1). reference).

  In addition, by attaching an adjustment mechanism to the hinge portion, the housing opening / closing angle adjustment that allows the user to arbitrarily adjust the opening / closing angle between the first housing portion and the second housing portion between 90 degrees and 180 degrees. A device has been proposed by the present applicant (for example, Japanese Patent Application No. 2003-107704).

Japanese Patent No. 3424607

  However, of the first and second methods for adjusting the distance from the microphone to the speaker, the first method may affect the hardware structure other than the speaker and microphone of the mobile phone. In addition, if there is a user who has no problem with the default speaker position and microphone position, the movement and adjustment functions themselves are unnecessary, and as a result, the service is considered to be down. Further, the foldable mobile phone described in Patent Document 1 that implements the second method controls the first and second casings by controlling the opening / closing angle of the hinge portion so as to maximize the reception level. The opening / closing angle of the unit is adjusted, and cannot be adjusted to an arbitrary opening / closing angle of the user.

  Further, the conventional case opening / closing angle adjuster proposed by the applicant of the present invention is provided in the hinge portion of the mobile phone body by being built in or externally attached, and is configured to adjust the angle depending on the mechanism of the hinge portion. . On the other hand, one of the usage modes of a foldable mobile phone is to use it in a state where it is placed on a desk, but the foldable mobile phone is placed on a desk and the first and second casings are placed at a predetermined angle. When holding in an open state, the angle of the open state depends on the hard hinge part, so even if the conventional housing opening / closing angle adjuster proposed by the applicant is used, the angle preferred by the user It is difficult to hold the casing.

  In particular, in recent foldable mobile phones, the weight of the second casing portion provided with the display portion by the liquid crystal display element is large due to the high functionality such as camera mounting and high-definition liquid crystal mounting. It is difficult to hold the first and second casing portions in an opened state at an arbitrary angle in a state where the provided first casing portion is installed on a desk.

  The present invention has been made in view of the above points, and is a foldable type that can arbitrarily adjust the opening and closing angles of the first and second housing parts without changing the configuration of an existing foldable portable wireless terminal. An object of the present invention is to provide a casing opening / closing angle adjuster for a portable wireless terminal.

  Another object of the present invention is to provide a case opening / closing angle adjuster for a folding portable wireless terminal that can be mounted without impairing the portability of an existing folding portable wireless terminal.

  Furthermore, another object of the present invention is to provide a first casing with an operation key installed on a desk and open the first and second casings at an arbitrary angle for a long period of time. An object of the present invention is to provide a case opening / closing angle adjuster for a foldable portable wireless terminal that can be held.

In order to achieve the above object, a case opening / closing angle adjuster of a foldable portable wireless terminal according to a first aspect of the present invention includes a first case portion provided with at least a microphone on the inner surface and at least a speaker on the inner surface. Opening and closing angles of the first casing part and the second casing part of the foldable portable wireless terminal in which each one side end part of the second casing part provided with a hinge part is connected by a hinge part. A body opening / closing angle adjuster that adjusts the body portion, a base portion that is detachably connected to a predetermined position of at least one of the first and second housing portions near the hinge portion, and a predetermined position of the base portion In the closed state in which the inner surface of the first housing portion and the inner surface of the second housing portion face each other and are substantially in contact with each other, the outer surfaces of the first and second housing portions are not In the open state in which the inner surface of the first housing portion and the inner surface of the second housing portion are separated from each other, the first or second housing is in contact. In contact with the outer surface of the parts, and the angle limiting portion for limiting the opening angle between the inner surfaces of the first and second housing portions in a predetermined angle or less, the first and second when in the closed state A height adjusting mechanism for adjusting the height position of the angle limiting portion that moves the angle limiting portion in a direction orthogonal to each inner side surface of the housing portion and holds the angle limiting portion at an arbitrary position. Features.

In the present invention, it can be attached to the foldable portable radio terminal with an external attachment type, and the opening angle of the casing is limited at a position close to the hinge portion of the foldable portable radio terminal. The opening angle between the inner surfaces of the first and second housing parts of the foldable portable wireless terminal can be limited to a predetermined angle or less. In addition, the present invention has an angle adjustment function for limiting the operating range of the first housing part and the second housing part itself, instead of simply adjusting the angle by simply controlling the hinge portion. It has a structure for holding both of the second casing portions. Furthermore, in this invention, it can restrict | limit to a user's arbitrary housing | casing opening angles.

  In order to achieve the above object, a housing opening / closing angle adjuster according to a second invention is provided for operating the folding portable wireless terminal according to the first invention together with a microphone on the inner surface of the first housing portion. Various keys are provided, and the mobile phone is a foldable mobile phone in which a display unit is provided together with a speaker on the inner side surface of the second casing unit. It is characterized by being in contact with the outer surface. According to the present invention, the first and second casing portions can be held for a long period of time while being opened at an arbitrary angle while the first casing portion provided with various operation keys is installed on a desk.

In order to achieve the above object, a housing opening / closing angle adjuster according to a third aspect of the present invention is a hinge portion in which each one side end portion of the second housing portion provided with at least a speaker on the inner surface can be freely opened and closed. A foldable portable wireless terminal connected to each other by a first and second housing opening / closing angle adjuster for adjusting an opening / closing angle between the first housing portion and the second housing portion. A base portion that is detachably connected to a predetermined position of at least one of the casing portions; and an inner surface of the first casing portion and an inner side of the second casing portion that are fixed to the predetermined positions of the base portion. In the closed state where the side faces and substantially contacts, the outer side surfaces of the first and second casing portions are not in contact with each other, and the inner side surfaces of the first casing portion and the second casing portion are not in contact with each other. In the open state in which the side surfaces are separated from each other, the opening angle between the inner side surfaces of the first and second housing units is in contact with the outer surface of the first or second housing unit. The and a angle limiting portion for limiting to a predetermined angle or less, the substrate portion, sandwiching the first housing portion, two side portions adjacent to the one end coupled to the hinge portion in the vicinity of the hinge portion It is tightened with a tightening tool and fixed to the first casing.

To achieve the above object, the housing opening angle adjuster of the fourth invention, the third inventions of the folder type mobile wireless terminal operated with a microphone on the inner surface of the first housing portion Keys are provided, and the mobile phone is a foldable mobile phone in which a display unit is provided together with a speaker on the inner surface of the second housing unit. It is characterized by being in contact with the outer surface.

  The first effect of the present invention is that the opening angle between the inner side surfaces of the first and second housing parts of the foldable portable wireless terminal is set so that the distance between the microphone and the speaker is the mouth and ear of the user. The opening angle can be limited to match the distance between the mobile phone and the folding angle of the mobile phone. This is because the casing opening / closing angle adjuster of the present invention is attached to the folding portable wireless terminal in the form of an external attachment.

  In addition, the second effect of the present invention is that the portability of an existing foldable portable radio terminal is not impaired even when the foldable portable radio terminal is attached. The reason is that the housing opening angle is limited at a position close to the hinge portion of the folding portable wireless terminal, and the first and second casing portions of the folding portable wireless terminal are very compact. This is because the opening angle between the inner side surfaces can be limited to a predetermined angle or less.

  In addition, the third effect of the present invention is that the present invention does not simply adjust the angle by controlling the hinge part, but adjusts the operating range of the first casing and the second casing itself. Since it has a function and has a structure for holding both the first and second housing parts, the first housing part provided with various keys for operation is installed on the desk, The 1st and 2nd housing | casing part can be hold | maintained for a long time in the state opened by arbitrary angles, and a sense of stability when installing on a desk etc. can be improved.

  In addition, the fourth effect of the present invention is that it is possible to improve the usability when using the folding portable wireless terminal. The reason is that if the casing opening angle is limited in order to shorten the distance between the speaker and the microphone, the screen of the foldable portable wireless terminal can be easily seen during use.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a foldable portable wireless terminal in a non-mounted state and a mounted state of an embodiment of a case opening / closing angle adjuster of the foldable portable wireless terminal according to the present invention. 1A is an external perspective view of an example of a foldable portable wireless terminal when the housing opening / closing angle adjuster is not attached, and FIG. 1B is a housing opening / closing angle adjusting device according to the present invention. The external appearance perspective view of an example of the foldable portable radio | wireless terminal at the time of the mounting state of one Embodiment is shown. In both drawings, the same components are denoted by the same reference numerals.

  FIG. 1A shows a conventional foldable mobile phone as an example of a foldable mobile radio terminal. This foldable mobile phone is a first in which a microphone and various keys are provided on the inner surface. The one side end portion of the housing portion 1 and the second housing portion 2 provided with a display portion and a speaker on the inner surface are coupled by a hinge portion 3 so as to be freely opened and closed. FIG. 1A shows a “closed” state (“folded” state) in which the inner surface of the first housing portion 1 and the inner surface of the second housing portion 2 face each other and are in close contact with each other. The bottom surface (outer surface) of the first casing unit 1 is flat and does not affect the case where it is installed on a desk or the like.

  FIG. 1B is an external perspective view showing a state in which the housing opening / closing angle adjuster 4 of the present embodiment is attached as an attachment to the outside of the hinge portion 3 of the folding mobile phone shown in FIG. Indicates. The casing opening / closing angle adjuster 4 has a predetermined flat plate-like base portion 4a having substantially the same thickness (height) and width as the first casing portion 1 and a predetermined length, and a base portion. 4a is formed of a quadrangular prism-shaped angle limiting portion 4b having substantially the same thickness (height) and width as the first casing 1 and having an L-shaped cross section as a whole. . In the folded state of the foldable mobile phone, the angle limiting portion 4b is positioned above the base portion 4a so as not to come into contact with the second housing portion 2 as shown in FIG. Is provided. The casing opening / closing angle adjuster 4 is detachably provided to the foldable mobile phone.

  FIG. 2A is an external perspective view of an example of a folded portable wireless terminal in an opened state without the housing opening / closing angle adjuster, and FIG. 2B is a housing opening / closing angle adjuster of the present invention. The external appearance perspective view of an example of the foldable portable radio | wireless terminal in the mounting state of one Embodiment at the time of an open state is shown. In both drawings, the same components are denoted by the same reference numerals.

  FIG. 2A shows an external appearance in an “open” state in which the inner side surface of the first casing unit 1 and the inner side surface of the second casing unit 2 are separated by a predetermined angle. A microphone 5 and various keys 6 for operation are provided on the inner surface of the body part 1. In addition, a display unit 7 and a speaker 8 that are liquid crystal display elements are provided on the inner side surface of the second casing unit 2. This configuration itself is the same as the conventional one.

  FIG. 2B is an external perspective view in a state where the casing opening / closing angle adjuster 4 of the present embodiment is attached as an attachment to the outside of the hinge portion 3 of the folding mobile phone shown in FIG. And the movement of the second housing portion 2 is restricted by contacting the outer surface of the second housing portion 2 with the angle limiting portion 4b of the housing opening / closing angle adjuster 4 of the present embodiment, The opening angle in the open state between the inner side surface of the first casing unit 1 and the inner side surface of the second casing unit 2 is physically limited. The casing opening / closing angle adjuster 4 is used only for the purpose of limiting the opening angle, and does not give negative factors to other functions.

  Here, the material of the housing opening / closing angle adjuster 4 gives scratches or the like to the outer surface of the second housing portion 2 even when the angle limiting portion 4b contacts the outer surface of the second housing portion 2. For example, a material having excellent elasticity and buffering properties such as urethane and sponge can be used. However, since the angle limiting portion 4b physically limits the opening angle between the first casing portion 1 and the second casing portion 2, in reality, the above-mentioned material alone is the intended purpose. Since it is difficult to achieve, a non-elastic material such as plastic coated with the above material is used.

  Next, the configuration of the housing opening / closing angle adjuster 4 will be described in more detail. The casing opening / closing angle adjuster 4 is configured to be detachably connected to the foldable mobile phone, and the first configuration thereof is the first as shown by 41 in FIGS. 3 (A) and 3 (B). In this configuration, the hinge portion 3, which is a connection portion between the first housing portion 1 and the second housing portion 2, is connected. In this case, the base body portion 4a of the housing opening / closing angle adjuster 41 is rubber or a belt-shaped belt whose length can be limited, and a notch for connecting the hinge portion 3 and a part of the first housing portion 1 to each other. 3c is provided.

  The mounting strength of the casing opening / closing angle adjuster 41 with respect to the foldable mobile phone is such that the load / strength is applied to the casing 1 when the casings 1 and 2 of the foldable mobile phone are opened. Whether this is the case depends on the manufacturer of the foldable mobile phone, the manner of operation, and the like, but at least strength sufficient to withstand the load when the casings 1 and 2 are opened is required. The casing opening / closing angle adjuster 41 is relatively easy to attach and detach.

  As the second configuration of the casing opening / closing angle adjuster 4, as shown by 42 in the external perspective view of FIG. 4A and the top view of FIG. It is the structure to join. The casing opening / closing angle adjuster 42 has a structure in which the base portion 4a joins the side surfaces of the first casing portion 1 with a casing protecting sponge 4e as an example of a cushioning material interposed therebetween. Yes. Two side surface portions (in FIG. 4 (B), two upper and lower side surface portions in FIG. 4B) adjacent to one end portion of the first housing portion 1 near the hinge portion 3 coupled to the hinge portion 3 Clamp in a vise-like structure. In order to adjust this clamping force, a tightening screw 4d is provided. The housing opening / closing angle adjuster 42 can also be attached to and detached from the folding cellular phone. 3 and 4 are diagrams for explaining the configuration of the casing opening / closing angle adjuster 4 (41, 42), and therefore, shown in FIGS. 2A and 2B, which are not related to the description of the configuration. The microphone 5, various keys 6, the display unit 7, and the speaker 8 are not shown.

  Next, the operation of the present embodiment will be described with reference to FIG. FIG. 5A shows an external perspective view of an example of a folding mobile phone in an open state with the housing opening / closing angle adjuster not attached, and a housing opening angle image 10 at that time, and FIG. These are the external appearance perspective views of an example of the folding-type mobile phone in the open state, and the case opening angle image 11 at that time, when the case opening / closing angle adjuster of the present invention is mounted. In the figure, the same components as those in FIGS. 2A and 2B are denoted by the same reference numerals, and description thereof is omitted. 5A and 5B, the various keys 6 and the display unit 7 shown in FIGS. 2A and 2B are not shown for convenience of illustration.

  As in the conventional case, in the folding cellular phone when the case opening / closing angle adjuster is not attached and in the open state, the image of the case opening angle is the first as shown by 10 in FIG. The inner side surface of the casing portion 1 and the inner side surface of the second casing portion 2 are separated from each other by a predetermined angle θ1. Here, the length in the direction orthogonal to the opening / closing axis direction of the first casing unit 1, that is, the length in the linear direction connecting the microphone 5 and the speaker 8 is y, and the microphone 5 and the speaker 8 of the second casing unit 2. If the length in the straight line direction connecting x is x, the distance z1 between the microphone 5 and the speaker 8 is expressed by the following equation.

z1 = √ (x ² + y ² −2xycos θ1) (1)
On the other hand, when the case opening / closing angle adjuster 4 of the present embodiment is attached, the image of the case opening angle of the foldable mobile phone in the open state is as shown by 11 in FIG. The angle is limited, and the inner side surface of the first casing unit 1 and the inner side surface of the second casing unit 2 are in a state of being separated by an angle θ2 (<θ1). The distance z2 between the microphone 5 and the speaker 8 at this time is expressed by the following equation.

z2 = √ (x ² + y ² −2 xy cos θ ² ) (2)
Here, by mounting the casing opening / closing angle adjuster 4 of the present embodiment, the opening angle of the foldable mobile phone is limited to the conventional θ1 to θ2, so z1 represented by the equation (1) And z2 represented by the formula (2): z1> z2 (3)
The relationship holds. That is, by mounting the casing opening / closing angle adjuster 4 of the present embodiment, the distance between the microphone 5 and the speaker 8 is set to the distance between the microphone 5 and the speaker 8 of the conventional foldable mobile phone not mounted with the casing opening / closing angle adjuster 4 It can be shorter. Note that the length of change in the distance z2 between the microphone 5 and the speaker 8 when the housing opening / closing angle adjuster 4 of the present embodiment is mounted depends on the specifications of the folding mobile phone device, but x = 1, y = 1, 90 <θ2 <180,
√2 <z2 <2 (4)
Thus, the maximum value can be reduced to the 1/2 power.

  By the way, the penetration rate of mobile phones now reaches about half of all the nations, and there are not a few users of childhood. However, since the distance z1 between the microphone 5 and the speaker 8 when the conventional folding cellular phone is in the open state is a value suitable for a general adult, the child user can fold the cellular phone. When the telephone is actually used, there may be a case where the microphone 5 of the mobile phone does not match the position of the child's mouth when the speaker 8 of the mobile phone is applied to the ear of the child.

  However, the distance z2 between the microphone 5 and the speaker 8 when the cellular phone is in the open state is shown in the formula (4) by attaching the casing opening / closing angle adjuster 4 of the present embodiment to the folding cellular phone. As described above, since the maximum value can be reduced to the 1/2 power, the case opening / closing angle adjuster 4 in which the distance z2 is shortened to the distance between the mouth and ears of a child user can be folded. By attaching to a telephone, even a young user can make a comfortable call.

  As described above, according to the present embodiment, the folding mobile phone can be attached in the form of an external attachment in order to adjust the opening angle of the folding mobile phone according to the distance between the user's mouth and ear. Therefore, in any foldable mobile phone, the distance between the microphone and the speaker can be set to an opening angle that matches the user.

  In the present embodiment, the casing opening angle is limited at a position close to the hinge portion of the foldable mobile phone, and the intended function can be achieved very compactly. Even when the foldable mobile phone is mounted, the portability of the existing foldable mobile phone is not impaired.

  In addition, the present embodiment has an angle adjustment function that limits the operating range of the first casing unit 1 and the second casing unit 2 itself, rather than simply adjusting the angle by controlling the hinge portion. Since it has a structure that holds both the first and second casing portions 1 and 2, in a state where the first casing portion 1 provided with various keys 6 for operation is installed on the desk, The 1st and 2nd housing | casing parts 1 and 2 can be hold | maintained for a long period in the state opened by arbitrary angles. In addition, in this embodiment, if the opening angle of the housing is limited to reduce the distance between the speaker and the microphone, the screen of the foldable mobile phone becomes easy to see during use, and a sense of stability when installed on a desk or the like is also provided. Therefore, it is possible to improve the usability when using the foldable mobile phone.

  Since the height of the casing opening / closing angle adjuster 4 shown in FIGS. 1B, 2B, and 5B is a fixed constant value, the opening angle θ2 is constant, and therefore ( The distance z2 between the microphone 5 and the speaker 8 when the mobile phone represented by the formula (2) is open is also constant. Therefore, by providing multiple types of housing opening / closing angle adjusters with different heights, the user can select the housing opening / closing angle adjuster with a height that matches the distance between the user's mouth and ear. The optimal opening angle can be obtained for the person. The mobile phone is generally used by an individual. Usually, a plurality of people do not share a single mobile phone, and the housing opening / closing angle adjuster 4 is detachable even if it is shared. Accordingly, there is no problem because another case opening / closing angle adjuster may be attached or removed.

  However, it goes without saying that a housing opening / closing angle adjuster capable of changing the height is also possible. In this case, for example, a height adjustment mechanism having a schematic configuration shown in FIG. 6 is used. In the figure, an angle limiting portion 21b fixed to one end of the base portion 21a of the casing opening / closing angle adjuster has a long hole having a height direction as a longitudinal direction as a height adjusting blank 22. The height adjusting blank 22 is provided with a screw 23 movably in the direction of the arrow. Further, the angle limiting portion 21b is hollow, and an angle limiting portion 21c that can be moved up and down in the direction of the arrow integrally with the screw 23 is provided inside the hollow. When the screw 23 is tightened, the screw 23 and the angle limiting portion 21c are provided. Is fixed in that position. The outer surface of the second casing portion comes into contact with the vicinity of the upper portion of the angle limiting portion 21c to limit the opening angle.

  As a result, the screw 23 is loosened, the screw 23 is moved to an arbitrary height in the height adjusting blank 22 and the screw 23 is tightened, whereby the angle limiting portion 21c is adjusted to a height corresponding to the height of the screw 23. Is fixed, and the upper surface of the angle limiting portion 21c is in contact with the outer surface of the second casing to limit the opening angle, and the opening angle is adjusted to an angle corresponding to the height of the screw 23. Will be. Therefore, when a case opening / closing angle adjuster capable of changing the height is mounted on a foldable mobile phone, the opening / closing angle of the case can be adjusted. The housing opening / closing angle can be held at an angle that matches the position of the microphone and the position of the speaker of the tatami-type mobile phone.

  In addition, this invention is not limited to the above embodiment, For example, a housing | casing opening / closing angle adjuster is attached to a 2nd housing | casing part, and restrict | limits the opening angle of a 1st housing | casing part. This is also possible in principle.

It is an external appearance perspective view when one Embodiment of the housing | casing opening / closing angle adjuster of this invention is a non-mounting state and a mounting state with respect to the foldable portable radio | wireless terminal in a closed state. It is an external appearance perspective view when one Embodiment of the housing | casing opening / closing angle adjuster of this invention is a non-mounting state and a mounting state with respect to the foldable portable radio | wireless terminal in an open state. It is a connection block diagram with respect to the foldable portable radio | wireless terminal of one Embodiment of the housing | casing opening / closing angle adjuster of this invention. It is a connection block diagram with respect to the foldable portable radio | wireless terminal of other embodiment of the housing | casing opening / closing angle adjuster of this invention. It is operation | movement explanatory drawing of the housing | casing opening / closing angle adjuster of this invention. It is a schematic block diagram of one Embodiment of the height adjustment mechanism of the housing | casing opening / closing angle adjuster of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st housing | casing part 2 2nd housing | casing part 3 Hinge part 4, 41, 42 Housing | casing opening / closing angle adjuster 4a, 21a Base part 4b, 21b, 21c Angle limiting part 4c Notch part 4d Tightening screw 4e Housing Sponge for body protection 5 Microphone 6 Various keys for operation 7 Display section 8 Speaker 22 Blank for height adjustment 23 Screw

Claims (4)

Folding in which one end of each of the first housing part having at least a microphone on the inner surface and the second housing part having at least a speaker on the inner surface is joined by a hinge part so as to be freely opened and closed A housing opening / closing angle adjuster for adjusting an opening / closing angle between the first housing portion and the second housing portion of the portable wireless terminal,
A base portion removably connected to a predetermined position of at least one of the first and second casing portions in the vicinity of the hinge portion;
In the closed state in which the inner surface of the first housing portion and the inner surface of the second housing portion are opposed to each other and are substantially in contact with each other, the first and second housing portions are fixed at predetermined positions of the base portion. In the open state in which the inner side surface of the first casing unit and the inner side surface of the second casing unit are spaced apart from each other of the outer side surfaces of the casing unit, the first or second casing is provided. An angle limiting portion that contacts an outer surface of the body portion and limits an opening angle between the inner surfaces of the first and second housing portions to a predetermined angle or less ;
A height position of the angle limiting portion that moves the angle limiting portion in a direction orthogonal to the inner side surfaces of the first and second housing portions when in the closed state and holds the angle limiting portion at an arbitrary position. And a height adjusting mechanism for adjusting the housing opening / closing angle adjuster of the foldable portable wireless terminal.   In the foldable portable wireless terminal, various keys for operation are provided along with the microphone on the inner side surface of the first casing unit, and a display unit is provided with the speaker on the inner side surface of the second casing unit. The foldable portable radio terminal according to claim 1, wherein the foldable portable radio terminal is provided, wherein the angle limiting portion is in contact with an outer surface of the second casing portion in the opened state. Housing opening / closing angle adjuster. Folding in which one end of each of the first housing part having at least a microphone on the inner side surface and the second housing part having at least a speaker on the inner side surface are joined by a hinge part so as to be freely opened and closed A housing opening / closing angle adjuster for adjusting an opening / closing angle between the first housing portion and the second housing portion of the portable wireless terminal,
  A base portion removably connected to a predetermined position of at least one of the first and second casing portions in the vicinity of the hinge portion;
  In the closed state in which the inner surface of the first housing portion and the inner surface of the second housing portion are opposed to each other and are substantially in contact with each other, the first and second housing portions are fixed at predetermined positions of the base portion. In the open state in which the inner side surface of the first casing unit and the inner side surface of the second casing unit are spaced apart from each other of the outer side surfaces of the casing unit, the first or second casing is provided. An angle limiting portion that contacts an outer surface of the body portion and limits an opening angle between the inner surfaces of the first and second housing portions to a predetermined angle or less;
  The base portion is tightened with a tightening tool in such a manner as to sandwich two side surface portions adjacent to one side end portion of the first casing portion near the hinge portion that is coupled to the hinge portion. And a housing opening / closing angle adjuster for a foldable portable wireless terminal, wherein the housing opening / closing angle adjuster is fixed to the first housing portion. In the foldable portable wireless terminal, various keys for operation are provided along with the microphone on the inner side surface of the first casing unit, and a display unit is provided with the speaker on the inner side surface of the second casing unit. 4. The folding portable radio terminal according to claim 3, wherein the angle limiting portion is in contact with an outer surface of the second casing when in the open state. Housing opening / closing angle adjuster.

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