JPH0568156U - Folding phone rotation structure - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The main body frame and cover of the foldable telephone are held at an optimum cover angle to eliminate variations in voice during transmission and to connect the main body frame and cover. Prevents breakage of parts and improves assemblability and maintainability. [Structure] On one end side of the main body frame 11, a connection support portion 12 having main body side connection holes 12a on both side surfaces is provided, and
A substantially cylindrical shaft 14 having an opening on one end side and a mountain-shaped protrusion 16 on the other end surface side is formed, and the shaft 14 is inserted into the connecting hole 12a via a compression coil spring 13 so that the shaft 14 can be retracted and attached. .. A pair of connecting portions 19 is formed at one end of the cover 18, a cover-side connecting hole is formed in an opposing surface of the connecting portion 19, and a taper surface abutting the protruding portion 16 is radially formed at a predetermined interval on the abutting surface thereof. A plurality of rotating surfaces 2 arranged
By providing 0, the protrusion 16 is engaged with a predetermined taper surface of the rotating surface 20 to hold the cover 18 at a predetermined angle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a foldable telephone used as a portable communication device, and relates to a rotating structure of a foldable portion of the telephone.

[0002]

[Prior Art]

 5A and 5B are explanatory views showing a rotating structure of a conventional foldable telephone. FIG. 5A is a disassembled perspective view, FIG. 5B is a perspective view with a cover closed, and FIG. 5C is a state with a cover open. FIG. In the figure, reference numeral 1 denotes a main body frame corresponding to a receiving side which is held by a hand when used, and has a cylindrical connecting support portion 2 at one end for connecting with a cover described later. Further, 3 is a main body side stopper provided at one corner of the main body frame 1, and these are integrally formed.

Reference numeral 4 denotes a cover which is connected to the main body frame 1 through the connection support portion 2, and is used by opening from the main body frame 1 at the time of transmission, and the connection support portion is provided at one corner portion. In addition to having a cylindrical support receiving portion 5 having an outer diameter and an inner diameter similar to 2, the outer peripheral surface of the support receiving portion 5 is engaged with the main body stopper 3 to regulate the opening angle of the cover 4. A cover side stopper 6 is formed. Reference numeral 7 is a protrusion projecting in an L shape from the peripheral surface of the cover 4 so as to support one end of a torsion coil spring described later.

Reference numeral 8 denotes a connecting shaft for connecting the main body frame 1 and the cover 4, which has a head portion 8 a having substantially the same outer diameter as the connecting support portion 2 and the support receiving portion 5, and a head portion 8 a of the head portion 8 a. It comprises a shaft portion 8b extending from the center and having an outer diameter capable of being inserted into the connection support portion 2 and the support receiving portion 5. Reference numeral 9 denotes a torsion coil spring in which the shaft portion 8b of the connecting shaft 8 is inserted inside the coil, and is housed inside the connecting support portion 12.

Reference numeral 10 is a groove formed in the connecting and supporting portion 2 for locking one end 9 a of the torsion coil spring 9. In these assembling, first, as shown in (a), the connecting sides of the main body frame 1 and the cover 4 to be connected are made to face each other, and the connecting support portion 2 of the main body frame 1 and the support receiving portion of the cover 4 are connected. 5 and 5 are arranged so as to extend in the axial direction.

The torsion coil spring 9 is inserted from the tip of the shaft portion 8 b of the connecting shaft 8 toward the head portion 8 a, and the shaft portion 8 b of the connecting shaft 8 is inserted into the connecting support portion 2 together with the torsion coil spring 9. At this time, one end 9a of the torsion coil spring 9 is inserted into the groove 10 formed in the connection support portion 12 to hold one end of the torsion coil spring 9. In this way, when the entire shaft portion 8b enters into the connection support portion 2 together with the torsion coil spring 9, the other end portion of the torsion coil spring 9 is hooked on the protrusion 7 of the cover 4 and locked. At this time, since one end of the torsion coil spring 9 is held in the groove 10 of the connection support portion 12, the torsion coil spring 9 is in a state where a repulsive force for urging the cover 4 from the body frame 1 is accumulated, and the body is The frame 1 and the cover 4 are connected and assembled by the torsion coil spring 9 while being urged so as to be always opened, and this is shown in FIGS.

As shown in (b), when not in use, that is, when not talking, the cover 4 is locked to the main body frame 1 by a lock mechanism (not shown) and is held in a closed state. Further, FIG. 7C shows that the telephone is being used, that is, a state in which a telephone call is possible. When the lock mechanism (not shown) is released, the cover 4 is rotated by the urging force of the torsion coil spring 9. open. Then, when the cover side stopper 6 of the rotating cover 4 comes into contact with the main body side stopper 3 of the main body frame 1, the rotation is stopped, and the cover has a predetermined cover opening angle in a talking state. In other words, the cover 4 is always stopped at this predetermined angle so that the cover 4 is ready for a call.

[0008]

[Problems to be solved by the device]

 However, the above-mentioned conventional technique has the following problems. FIG. 6 is an explanatory view showing the problems of the conventional example, and shows a state in which an unreasonable external force is applied in the direction of opening the cover.

As shown in this figure, for example, if an unnecessarily excessive external force is applied to the connecting portion of the main body frame 1 and the cover 4 in the opening direction of the cover 4 during the assembling work, this telephone set Since the main body side stopper 3 has a beam shape, the cover side stopper 6 may slip into the lower side of the connecting portion, and the main body side stopper 3 may be bent outward. .. In other words, not only the function as a stopper is lost, but it also becomes impossible to return to the predetermined position set as the optimum angle during a call, and the stopper 3 on the main body side may be damaged. Had.

Further, according to the conventional structure, since the cover 4 is constantly biased in the opening direction by the torsion coil spring 9, the cover 4 is kept open when not in use, that is, when not talking. In order to keep it in the closed state, it is necessary to provide a lock mechanism for locking the body frame 1. Further, in the conventional structure, even when the cover 4 is opened, there is a stopper that stops the cover 4 in the opening direction, but no stopper is provided to stop the cover 4 in the closing direction. In other words, the cover 4 is always biased in the opening direction, and the stopper that restricts the rotation in the opening direction is formed, but the cover 4 is easily closed by applying a force to close it. The cover 4 can be rotated in any direction. For example, if force is applied to the hand holding the cover 4 or if it hits against something for some reason, the cover 4 will rotate in the closing direction, which is ideal for talking. It is not held at an angle. For this reason, there is also a problem that the voice during transmission is not accurately transmitted to the transmitter, and the voice during transmission varies.

In addition, when the beam-shaped main body side stopper 3 is damaged due to unreasonable handling, the main body frame must be replaced, and therefore this connecting portion must be disassembled. However, since the torsion coil spring 9 and the like are used, there is a problem that the assembling property is poor and the maintenance property is not suitable. The present invention has been made to solve the above-mentioned problems, and the stopper for restricting the rotation of the cover and stopping it at the angle at the time of transmission does not deform even if an external force is applied. Hold the cover at the specified stop position, prevent damage to the connecting part due to bending due to external force, etc., and hold it at the specified stop position so that the open cover does not rotate easily in the closing direction. It eliminates the variation in voice during a call and provides good call sensitivity. Moreover, even if the connection part is damaged, it can be easily repaired without disassembling the connection part, and it is easy to assemble and maintain. It is an object of the present invention to provide an excellent folding structure for a foldable telephone.

[0012]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises a main body frame corresponding to the receiving side and a cover rotatably connected to one end side of the main body frame. When not in use, the cover is a partial upper surface of the main body frame. The cover is closed to cover the side, and when transmitting, the cover is rotated so as to be raised from the body frame to open at a predetermined angle. In addition, a connection support part with a bottomed main body side connection hole whose both side surfaces are open surfaces is provided, and a substantially cylindrical shaft with one end open and a mountain-shaped protrusion on the other end side is provided. Form.

Then, the shaft is inserted into the main body side connecting hole from the opening side of the connecting support through the compression coil spring so that the other end of the shaft can be retracted from both side surfaces of the connecting support. To do. In addition, a pair of connecting portions for sandwiching the connecting support portion from both side surfaces is formed at one end of the cover, a cover side connecting hole is formed in an opposing surface of the connecting portion, and a contact surface of the cover side connecting hole is formed. Is provided with a rotating portion in which a plurality of tapered surfaces inclined at an angle to contact the protrusion of the shaft are radially arranged at predetermined intervals, and the connecting portion of the cover holds the connecting support portion of the main body frame. Then, the main body frame and the cover are rotatably connected via the shaft, and the protrusion of this shaft is engaged with a predetermined taper surface of the rotating surface, thereby making the cover Keep it at a specified angle when not in use.

Further, a slope portion is provided on the outer peripheral edge portion of the other end surface side of the shaft that is removably mounted in the main body side connection hole of the main body frame via a compression coil spring, and the cover side connection hole opening surface side of the cover is provided. At the inner peripheral edge portion, when the cover is opened 180 ° from the main body frame, an inclined surface portion that is parallel to the inclined surface portion on the shaft side is formed so as to face the inclined surface portion on the shaft side, and force is applied in the opening direction of 180 ° or more. When added, the main frame and cover are separated.

[0015]

[Action]

 According to the above configuration, when the connecting portion of the cover is sandwiched by the connecting support portion of the main body frame, the shaft mounted in the connecting hole of the main body side of the connecting support portion via the compression coil spring is connected by the compression coil spring. Since it is urged so that it can project and retract from both side surfaces of the support part, the other projecting side of this shaft is inserted into the cover side connecting hole, and the projecting part of the shaft is formed in the cover side connecting hole. The main body frame and the cover are rotatably connected to each other by being brought into contact with a predetermined taper surface of the rotating surface.

With this, when the telephone is not used, the protrusion engages with the predetermined tapered surface which is engaged when the cover is closed, and the cover is held in the closed state on the main body frame. When the cover is opened for use, the cover rotates about the shaft as a fulcrum in the direction of opening from the body frame, and at this time, the protrusion of the shaft moves along the rotating surface. When the cover is opened up to a predetermined angle, the protrusion engages with the predetermined taper surface of the rotating surface formed at the position that has the optimum angle during transmission, and the cover has the optimum constant during transmission. Held at an angle.

Further, if a slope portion is provided at a predetermined position between the shaft and the cover-side connecting hole, for example, the cover is rotated 180 ° from the closed state, and an unreasonable force is exerted in the opening direction. When added, one end of the main body frame that comes into contact with the surface of the cover serves as a fulcrum, and the connecting portion of the cover receives a force in a direction away from the connecting support portion. For this reason, the slope portion on the cover side presses the slope portion on the shaft side, and as a result, the shaft is pushed into the body side connection hole against the biasing force of the compression coil spring, and the cover and the body frame are connected. The cover is removed from the body frame.

[0018]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are structural views of a main part of a foldable telephone showing a first embodiment. FIG. 1A is an exploded perspective view, FIG. 1B is an enlarged perspective view of a main part on a body frame side, and FIG. 1C is a cover side. It is a principal part expanded perspective view.

In FIG. 1, reference numeral 11 denotes a main body frame corresponding to the receiving side of a foldable telephone, which has a connecting support portion 12 projecting to the lower surface side with a width narrower than the width of the main body frame 11 from one edge portion. ing. The connecting and supporting portion 12 has a bottomed main body side connecting hole 12a formed inward from both side surfaces thereof. Reference numeral 13 is a compression coil spring that is inserted into the main body side connection hole 12a, and 14 is a shaft that is also inserted into the main body side connection hole 12a via the compression coil spring 13, and this shaft 14 has one end as shown in the figure. Has a substantially cylindrical shape with an open bottom, and the compression coil spring 13 is inserted from the opening side. A pair of spring-stopping claws 15 are provided on the opening side. When the claw-stopping claws 15 are bent inward and inserted into the main body side connection hole 12a, the main body side The stopper 14 is engaged with a locking portion (not shown) provided in the connecting hole 12a, and the shaft 14 is attached to the connecting support 12.

In addition, a mountain-shaped protruding portion 16 having a ridgeline on the center line is formed on the surface on the other end side of the shaft 14, and abuts on and engages with a rotation surface on the cover side described later. As a result, the rotation angle of the cover 18 is held at each predetermined position. Reference numeral 17 denotes a leg portion projectingly provided on the outer peripheral surface of the shaft 14, which serves as a guide when the shaft 14 is inserted into the coupling support portion 12 and also serves as a rotation stopper after being mounted in the coupling support portion 12. Play a role of.

Reference numeral 18 denotes a cover that is connected to the body frame 11, and is connected to one end of the cover through the shaft 14 and the compression coil spring 13 while sandwiching the connection support portion 12 of the body frame 11 while pressing them from both sides. Has a pair of connecting portions 19, which are provided with a body-side connecting hole 12a into which a part of the other end surface of the shaft 14 is inserted. A rotating surface 20 is formed on the abutting surface so as to abut and engage with the protruding portion 16 of the shaft 14.

As shown in FIG. 1C, the rotating surface 20 has A, B, C, D, E, F, and G surfaces. First, the surface A is a plane parallel to the plane portion of the other end surface of the shaft 14 which faces the shaft 14 when the shaft 14 is inserted into the cover-side connecting hole 19a. It is a parallel surface similar to the surface, but due to the B surface provided between the A surface and the C surface, and the G surface provided between the A surface and the F surface, only the A surface is the protrusion. It is formed at a position retracted by the height of the portion 16.

Further, the B surface and the D surface and the E surface provided between the C surface and the F surface are tapered surfaces each having a predetermined inclination angle. The mountain-shaped slopes of the protrusions 16 come into contact with and engage with each other. These are assembled by first inserting the compression coil spring 13 from one end opening side of the shaft 14 and then flexing the clearance-preventing claws 15 of the shaft 14 inward while connecting the leg portion 17 to the main body side of the coupling support portion 12. The hole 12a is aligned with the groove 12b and inserted into the main body side connecting hole 12a. When the shaft 14 is inserted up to a predetermined position, the bent stopper tabs 15 are inserted into a not-shown locking portion provided inside the main body-side connecting hole 12a and are locked, and the shaft 14 is fixed to the main body. It is mounted at a predetermined position in the side connection hole 12a. Similarly, the compression coil spring 13 and the shaft 14 are also mounted in the other main body side connection hole 12a of the connection support portion 12.

After that, the connecting portion 19 of the cover 18 is bent outward, and the connecting support portion 12 is sandwiched and connected to the main body frame 11. At this time, since the other end side of the shaft 14 is projected from the main body side connection hole 12a of the connection support portion 12, the cover 18 is connected by being pushed into the main body side connection hole 12a side. The shaft 14 is constantly urged by the repulsive force of the compression coil spring 13 in a direction projecting from the main body side connecting hole 12a, so that the other end side of the shaft 14 enters into the cover side connecting hole 19a and the urging force is applied. Thus, the cover 18 is held and connected to the body frame 11.

The operation of the first embodiment thus assembled will be described with reference to FIG. 1 and FIG. 2A and 2B are explanatory views showing the rotation operation of the cover. FIG. 2A is an overall perspective view, FIG. 2B is a cross-sectional view of a main part showing the rotation angle of the cover, and FIG. Shown respectively. When using a foldable telephone, first, the cover 18 is closed as shown by the solid line in (b), and then the cover 18 is opened as shown by the chain double-dashed line.

Each surface (A, B, C, D, E, F) of the rotating surface 20 is held at an optimum angle for transmission when the cover 18 is opened and a call is made. It is formed in the arrangement shown in c). That is, when the boundary line between the A and B surfaces is set to 0 ° and rotated from the A surface to the B surface direction, the boundary lines between the D surface and the E surface are 145 °, and the boundary line between the E surface and the F surface. Is a position rotated by 180 °. That is, here, the optimum opening angle of the cover 18 during a call is set to 145 ° when the cover 18 is closed when it is 0 °, as shown in FIG.

For this reason, when the user tries to open the cover 18 in order to make a call, the cover 18 has one side of the protrusion 16 of the shaft 14 on the 0 ° A surface shown in (c). Since the B surface is pressed, when the cover 18 is rotated so that it is caused by the main body frame 11, the B surface pushes the shaft 14 into the main body side coupling hole 12a against the compression coil spring 13, and the C surface is pressed. Reach Further, by rotating, the protrusion 16 of the shaft 14 moves on the C surface while being pressed by the C surface.

When the cover 18 reaches a predetermined angle, that is, 145 °, the protrusion 16 enters between the D surface and the E surface and engages with each other, and the protrusions 16 have both angle-shaped inclined surfaces. By pressing the D surface and the E surface by means of the above, the cover 18 is held at the position of 145 °, which is the optimum angle when transmitting. Therefore, the cover 18 is restricted by the D surface and the E surface both in the opening direction and in the closing direction, so that the stable transmission state of the predetermined angle is always ensured. You can

After that, when the cover 18 is further rotated by applying a force, it hits the main body frame 11 when the cover 18 is opened up to 180 °. However, since the protrusion 16 is located near the end of the E-face and does not face the F-face without penetrating into the F-face when it is opened to 180 °, it depends on the shape of the E-face and the urging force of the compression coil spring 13. The cover 18 returns to the closing direction, the protrusion 16 is inserted between the D surface and the E surface, and the cover 18 is also held at the position of 145 °.

Next, a second embodiment will be described with reference to FIGS. 3 and 4. 3A and 3B are explanatory views showing the structure of the second embodiment. FIG. 3A is an exploded perspective view of a main part, FIG. 3B is an enlarged perspective view of a main part on the body frame side, and FIG. 3C is a main part on the cover side. It is an enlarged perspective view. 4A and 4B are explanatory views showing the operation of the present embodiment, where FIG. 4A is an overall perspective view showing a state where the cover is removed, FIG. 4B is a schematic side sectional view of a connecting portion, and FIG. 4C is a connecting portion. Is a front sectional view, and (d) is a detailed view for explaining the acting direction of the force on the inclined surface.

In the second embodiment, when an excessive force is applied to the cover 18 in the opening direction after the cover 18 is rotated up to 180 ° which hits the body frame 11 in the first embodiment, The cover 18 is detached from the main body frame 11 so that the cover 18 and the main body frame 11 are not damaged. As can be seen from the figure, the structure is almost the same as that of the first embodiment, but the shaft 14 and the cover-side connecting hole 19a are provided with inclined surfaces 21 and 22, respectively.

The inclined surface 21 of the shaft 14 is formed on the outer peripheral surface on the opposite side, which is located substantially linearly with the leg portion 17, and is inclined toward the protrusion 16 on the other end surface side of the shaft 14. .. The inclined surface 22 of the cover-side connecting hole 19a is inclined toward the center of the rotating surface 21 from the opening edge of the cover-side connecting hole 19a at an angle substantially parallel to the inclined surface 21 of the shaft 14 side. I am letting you.

In the above structure, when an unreasonable force to open the cover 180 degrees or more is applied to the cover 18, the cover 18 has a fulcrum at a point P in FIG. 4B, which is one end of the main body frame 11. And a force is applied in the direction of arrow a in the figure. At this time, the inclined surface 21 of the shaft 14 and the inclined surface 22 of the cover-side connecting hole 19a are at positions facing each other as shown in the left half of (c).

Therefore, when a force is applied in this state, the connecting portion 19 of the cover 18 is lifted up, and the sloped portion 22 of the connecting portion 19 moves toward the sloped portion 21 of the shaft 14 as shown in FIG. ), The sloped portion 22 pushes the sloped portion 21 in the arrow X direction. The force in the X-direction is transmitted in the Y-direction by the slope portions 21 and 22, and the shaft 14 is pushed into the main body side connecting hole 12a.

When the connecting portion 19 further moves upward in this manner, it further contacts the protruding portion 16 via the slope portion 21 and pushes it in the Y direction. As a result, the tip side of the shaft 14 is disengaged from the cover side connecting hole 19a, and as a result, the force for connecting the cover 18 to the main body frame 11 is released, and the cover 18 is disengaged from the main body frame 11. As described above, when an unreasonable force is applied to open the cover 18 or more, the slope portion 22 of the cover-side connecting hole 19a abuts against the slope portion 21 of the shaft 14 and presses the cover 18, before the cover 18 is damaged. It is structured so as to be detached from the main body frame 11.

It should be noted that it is easy to connect the detached cover 18 to the main body frame 11 again, that is, the pair of connecting portions 19 of the cover 18 sandwiches the connecting support portion 12 of the main body frame 11. It just needs to be fitted, and the work is extremely easy.

[0037]

[Effect of the device]

 As described above, according to the present invention, a connection support portion having bottomed main body side connection holes whose both sides are open surfaces is provided on one end side of the main body frame corresponding to the receiving side, and one end side And a substantially cylindrical shaft with a mountain-shaped protrusion on the other end side, and insert this shaft into the main body side connecting hole from the opening side of the connecting support through the compression coil spring. By doing so, the other end side of the shaft is mounted so as to be retractable from both side surfaces of the connection support portion, and a pair of connection portions for sandwiching the connection support portion from both side surfaces are formed at one end of the cover. A cover-side connecting hole is formed in the facing surface of the connecting portion, and a plurality of tapered surfaces inclined at an angle to abut the protrusion of the shaft are radially arranged at a predetermined interval on the abutting surface of the cover-side connecting hole. It has a rotating part The connection support portion of the main body frame is sandwiched by the connection portion of the cover, and the main body frame and the cover are rotatably connected via the shaft, and the protruding portion of the shaft serves as a predetermined tapered surface of the rotation surface. By engaging them, the cover is held at a predetermined angle when transmitting and when not in use.

Therefore, in order to connect the cover and the main body frame, it is sufficient to attach the shaft to the connection support portion via the compression coil spring and then to sandwich the connection support portion by the connection portion of the cover. , Its workability becomes very easy. Also, unlike the conventional method, since a beam-shaped stopper that restricts only the cover opening direction is not used, the stopper may be damaged even if the cover is rotated more than a predetermined angle during transmission. In addition, since the cover is designed to always return to the optimum angle due to the tapered surface of the rotating surface, the cover will rotate in the closing direction unless a force against the biasing force of the compression coil spring is applied. It is possible to always send the sound to the microphone stably.

Further, even when the cover is in the closed state when not in use, the cover is held in the closed state by the engagement of the predetermined taper surface and the protrusion corresponding to the closed state. It is not necessary to provide a mechanism, the configuration is easy, and the number of parts can be reduced. Further, in addition to the above structure, as described in claim 2, in addition to the above-mentioned structure, a beveled portion is provided at an outer peripheral edge portion of the other end surface side of a shaft that is removably mounted in a main body side connection hole through a compression coil spring, When the cover-side connecting hole of the cover has an inner peripheral edge portion on the opening surface side, when the cover is opened 180 ° from the main body frame, an inclined surface portion that is parallel to the inclined surface portion on the shaft side is formed so as to face each other. For example, if an unreasonable force is applied to open the cover by 180 ° or more during assembly or transmission, the inclined surface on the cover side presses against the inclined surface of the shaft, and the shaft is connected to the support part. Push it inside to release the connection between the body frame and the cover. For this reason, the body frame and the cover are not subjected to excessive force, so that these parts will not be damaged.

Further, the connection between the body frame and the cover, which has been released from the connection, can be easily rotatably connected only by sandwiching the connection support portion of the body frame from both side surfaces thereof at the connection portion of the cover. As a result, the assemblability is also improved.

[Brief description of drawings]

1A and 1B are structural views of a main part of a foldable telephone according to a first embodiment, in which FIG. 1A is an exploded perspective view, FIG. 1B is an enlarged perspective view of a main part on a body frame side, and FIG. It is a principal part expansion perspective view of.

FIG. 2 is an explanatory view showing the rotation operation of the cover, (a)
Is an overall perspective view, (b) is a cross-sectional view of an essential part showing a rotation angle of the cover, and (c) is a flow chart of the rotation part.

3A and 3B are explanatory views showing a structure of a second embodiment, FIG. 3A is an exploded perspective view of a main part, FIG. 3B is an enlarged perspective view of a main part on a main body frame side, and FIG. 3C is a cover. It is a principal part expansion perspective view of the side.

4A and 4B are explanatory views showing the operation of the present embodiment, where FIG. 4A is an overall perspective view showing a state where a cover is removed, FIG. 4B is a schematic side sectional view of a connecting portion, and FIG. Front sectional view,
FIG. 6D is a detailed view illustrating the acting direction of the force on the inclined surface.

5A and 5B are explanatory views showing a rotating structure of a conventional foldable telephone, wherein FIG. 5A is an exploded perspective view, FIG. 5B is a perspective view with a cover closed, and FIG. 5C is a state with the cover open. FIG.

FIG. 6 is a perspective view of a connecting portion showing a problem of the conventional example.

[Explanation of symbols]

 11 Main Body Frame 12 Connection Support Part 12a Main Body Side Connection Hole 13 Compression Coil Spring 14 Shaft 16 Projection Part 18 Cover 19 Connection Part 19a Cover Side Connection Hole 20 Rotating Surface 21 Sloping Surface 22 Sloping Surface

Claims (2)

[Scope of utility model registration request] 1. A main body frame corresponding to a receiving side and a cover rotatably connected to one end side of the main body frame. When not in use, the cover is closed so as to partially cover the upper surface side of the main body frame. In a rotating structure of a foldable telephone that is used by opening this cover at a predetermined angle by rotating it so that it is raised from the main body frame at the time of transmission, one side of the main body frame has an opening surface on both sides. A connecting support part having a bottomed main body side connecting hole is provided, and a substantially cylindrical shaft having one end open and the other end face having a mountain-shaped protrusion is formed. The other end surface side of the shaft is mounted so that it can be retracted from both side surfaces of the connection support portion by inserting from the opening surface side of the connection support portion into the main body side connection hole via the compression coil spring, and A pair of connecting portions for sandwiching the connecting support portion from both side surfaces are formed at the ends, and a cover side connecting hole is formed in the facing surface of the connecting portion, and the abutment surface of the cover side connecting hole further includes the shaft of the shaft. A rotating portion is provided in which a plurality of taper surfaces inclined at an angle abutting the protrusion are radially arranged at a predetermined interval, and the connecting portion of the cover holds the connecting support portion of the main body frame to interpose the shaft. By rotatably connecting the main body frame and the cover and engaging the protrusion of this shaft with a predetermined tapered surface of the rotating surface, the cover can be held at a predetermined angle when talking and when not in use. Rotating structure of a foldable telephone characterized by: 2. A sloped portion is provided on the outer peripheral edge portion of the other end surface side of a shaft that is removably mounted in the main body side connection hole of the main body frame via a compression coil spring, and the opening side inner peripheral edge of the cover side connection hole of the cover. An inclined surface portion that is parallel to and faces the inclined surface portion on the shaft side when the cover is opened 180 ° from the main body frame so as to face the inclined surface portion on the shaft side and is 180 ° or more from the closed state on the main body frame. When an unreasonable force is applied in the opening direction, the cover-side slanted surface part abuts and presses the shaft-side slanted surface part, thereby pushing the shaft into the main body-side connection hole and connecting the cover and the main body frame. It cancels, The claim 1 characterized by the above-mentioned.
Rotating structure of the foldable telephone described.