TWI235797B - Hinge for electronic machine and electronic machine having same - Google Patents

Abstract

The present invention relates to a hinge for an electronic machine and an electronic machine having the hinge, wherein the hinge connects between a first and a second members that can be opened/closed with respect to each other. Besides connecting the first and second members that can be opened/closed with respect to each other in a manually opening/closing manner, the hinge also allows the first and second members to automatically move to an angle for use or operation by depression of a button of the hinge.

Description

1235797 V. Description of the invention α) [Technical field to which the invention belongs] The present invention relates to a hinge for an electronic device and an electronic device having the hinge, and is particularly suitable for use in, for example, a mobile phone or a pocket computer. An electronic device including a keyboard portion of the component and a display device of the second component. [Prior art] It is conventionally known that an electronic device of a mobile phone, which is a type of bi-fold electronic device, can be relatively opened and closed by using a microphone with a first component and a receiver with a second component of a display device. With a hinge, when the speaking part and the receiving part are fully closed, when the button is pressed, the speaking part and the receiving part will automatically open to a predetermined angle. The hinge for an electronic machine of this structure and the electronic machine having the hinge, It is known, for example, as disclosed in Japanese Patent Application Laid-Open No. 8-1 2 5 7 2 5. A hinge for an electronic device of this disclosed structure is provided with a torsion spring that is rewinded around the rotation axis of the hinge between the installation cylinder portion of the speaking portion and the installation cylinder portion of the reception portion that can be freely bi-folded through the hinge rotation axis. A fixing mechanism is provided between the installation cylinder portion of the talking portion and the installation cylinder portion of the reception portion, and one end portion of the torsion spring is only in a range above the predetermined opening angle of the reception portion. At the same time, a cam mechanism is provided between the mounting cylinder portion of the speaking portion and the mounting cylinder portion of the speaking portion, and a cam mechanism is provided in the axial direction of the mounting cylinder portion of the speaking portion by pressing operation. Press the buckle to make the cam move to rotate the receiver to the position of one end of the torsion spring fixed by the fixing mechanism.

1235797 V. Description of the invention (2) Up to the position, the installation cylinder portion of the aforementioned receiver is provided with the aforementioned buckle by pressing to release the fixed lock of the receiver portion of the installation cylinder portion of the aforementioned receiver. At the same time, a friction mechanism is provided to freely stop the said receiver from a predetermined opening angle. The above-mentioned fixing mechanism is a fixing part fixed to one end of a torsion spring fixedly provided on a loading end face accommodated in a mounting cylinder part of a receiver, an inclined part of the torsion spring rewinding direction provided on the fixing part, and a fixing part The fixed part of the torsion spring is released and the end of the torsion spring is fixed. The torsion spring is provided on the mounting cylinder of the talking part and is formed by a fixed groove positioned in the axial direction of the torsion spring. The pressing part of the end face of the buckle is formed by the pressing part of the pressing end of the loading end face of the mounting cylinder part received in the receiving part; the locking mechanism is formed by the shaft inserted into the hinge rotating shaft in the installing part of the receiving part. A compression spring is used to fold in one direction, and the locking member can be freely folded. In order to make the locking member appear, a locking groove is provided in the axial direction of the end face of the mounting cylinder of the spontaneous speaking section. Structure; The friction mechanism is a first convex portion provided on the end surface of the mounting cylinder portion of the receiver, and is in pressure contact with the first convex portion of the end surface within a predetermined opening angle range of the receiver. The second convex portion is provided on the end surface of the mounting tube portion of the receiver.

The conventionally disclosed hinge for an electronic device has the advantages of being able to manually open and close the talking and receiving parts, and press the buckle to automatically open to a locked angle, and then can be manually opened and closed to a fully open position, etc. In addition to the large number of parts and complicated structure, the automatic opening angle is very small. If you no longer open it manually, you will not be able to operate the keyboard part of the speaking part.

Page 6 1235797

The operation keys cannot fully recognize the display screen of the display device of the receiving part. ′ There is also a problem with the operability when it is fully opened with one-handed operation, and it is time-consuming and laborious to install into a mobile phone. In addition, the above-disclosed mobile phone will unlock the locked state when pressing the opening and closing buckle provided on the hinge, so that the speaking part and the receiving part are automatically opened a few times, and then manually opened again. In the open position, it is difficult to recognize the content displayed on the display day and time while operating the operation keys on the keyboard part of the speaking section. It is difficult to open it manually, which is also the problem. The reason is that, in view of the various shortcomings derived from the above-mentioned custom articles, the inventor of this case tried his best to improve the case and perfected it. With years of experience in the industry, he devoted himself to innovation and improvement, and finally successfully developed this piece. The case of "hinge for electronic machine and electronic machine having the same" is really an invention with enhanced efficacy. [Objective of the Invention] The main object of the present invention is to provide a hinge for an electronic device, which can open and close the first member and the second member automatically by pressing the buckle, in addition to the first member and the second member that can be manually opened and closed and relatively opened and closed. 2 component to the angle that can be used or operated. Another object of the present invention is to provide an electronic device, which is an electronic device composed of a first member and a second member that can be relatively opened and closed through a hinge. The hinge is designed to be provided on the hinge by pressing. It can automatically open the first and second members to an angle that can be used,

1235797 V. Description of the invention (4) or a predetermined opening angle, and can be closed manually from the automatic opening angle [Summary of the Invention] To achieve the above object, the present invention, as a hinge for an electronic machine, is characterized in that it is a link The hinge of the first member and the second member that can be relatively opened and closed has a structure including a rotation fixing mechanism on the outer periphery, a box body inserted into and fixed by an installation tube portion of the first member or the second member, and a through hole The central part of the box body is axially fixed at one end side to a rotary shaft on which the box body is mounted, and on the rotary shaft, rotation is restricted so that one of the mounted end portions can be folded in the axial direction, and has a fixed portion. The slide key and a rotation fixing mechanism on the outer periphery are inserted and fixed by inserting the other mounting cylinder of the first member or the second member, and the slide key can be foldably received in the direction of the inner axis and restrained. Rotate outside the cam provided on the rotation shaft, and have a direction toward the central axis, together with the rotation shaft, penetrate the inside of the cam outside the slide key, so that The axial direction can be stored in a foldable manner, and the inner cam of the fixed convex part which is fixed and disengaged by the fixed part and the rotation angle of the slide key, and the inner cam and the outer cam are opposite to each other, toward the central part axis direction, A sliding cam that penetrates through the rotation shaft, rotates the restraint in the box body, and can be folded in the axial direction, and a first compression spring provided between the sliding cam and the box body, and a spring device Between the slide key and the outer cam, a second compression spring having a weaker spring force than the first compression spring, a buckle attached to the slide key, and a cam portion in the same direction as the outer cam and the inner cam , And in the aforementioned sliding convex

1235797 V. Description of the invention (5) The wheel, and the cam portion on the opposite side of the cam portion of the outer cam and the inner cam have a cam portion. In general, the convex portion of the cam portion of the sliding cam is connected with the sliding key. The fixed convex part of the internal cam that prevents rotation is fixedly engaged. However, when the pressing operation is performed on the press button, the fixed state of the fixed part of the slide key and the fixed convex part of the internal cam are disengaged, causing the sliding. The cam portion of the cam is guided to the cam portion of the outer cam and rotates simultaneously with the case.

The internal cam of the present invention may be composed of a deformed insertion hole fixedly engaged with the fixed portion of the slide key to prevent rotation, a circular insertion hole that allows the fixed portion of the slide key to rotate, and By the rotation angle, the fixed portion in the circular insertion hole is prevented from moving in the axial direction and is provided as a segment portion. In the present invention, in a state where the rotation axis is restrained from rotating, the mechanism that allows the slide key to fold in the axial direction is provided with a long hole in the axial direction penetrating the radial direction of the slide key, and is installed in the long hole. In combination with the bolt on the rotation shaft, the mechanism for fixing the outer cam to the rotation shaft may also be the bolt.

Further, the present invention is an electronic device characterized in that the first member and the second member which can be opened and closed are connected to each other, and the hinges for electronic devices having the respective structures described above are used. [Embodiment] A case where one embodiment of the present invention is implemented in a mobile phone will be described below, but the hinges related to the present invention, except for the mobile phone,

Page 9 1235797 V. Description of the invention (6) The invention can also be applied to pocket computers, notebook computers, and other electronic devices. For example, the keyboard part constituting the first component and the hinge of the display device constituting the second component can be relatively opened and closed. The drawing is an embodiment of the present invention. In the first figure, reference numeral 1 is a speech unit of a mobile phone, which is an electronic device, and constitutes a first component. On this surface, a microphone portion 2 a and a keyboard are provided. Part 2b, Figure 3 is the receiving part of a mobile phone that is one of the same electronic equipment, and constitutes the second member. On this surface, a headphone part 4a and a display device 4b using liquid crystal are provided. Each end of 3 is provided with a mounting cylinder portion 1 a, 1 d, and 3 a constituting a connecting portion, and each of the mounting cylinder portions 1 a and 3 a is provided with a hinge A for an electronic device of a pressing type according to the present invention. , Can be connected relatively open and closed; In addition, Figure No. 4c is an antenna. The structure of the hinge A for an electronic device according to the present invention is described below. The second to twenty-two figures show the structure of the hinge A for an electronic device and its parts. In the drawing, the figure No. 5 is an iron-made rotating shaft. The rotating shaft 5 has a crotch 5 a at one end, and the bearing is fixed to a side wall of the box 6 provided with a rotation fixing mechanism 6 a formed by a convex portion and a concave portion on the outer periphery. The bearing hole 6 c of 6 b penetrates the axial direction of the central portion of the box body 6. The box body 6 is inserted into the mounting hole 3 b of the mounting tube portion 3 a provided in the receiver 3, especially as shown in the sixth figure. By combining the rotation fixing mechanism 6 a with the coupling portion 3 c formed by the concave portion and the convex portion provided in the mounting hole 3 b, the rotation fixing mechanism 6 a can rotate at the same time as the mounting barrel portion 3 a, and the rotation shaft 5, Then, it is fixed to a partition wall 3 e provided on the mounting cylinder portion 3 a by a washer 18 and an E ring 7. On the free end side that protrudes from the open end of the case 6 of the rotary shaft 5, especially

1235797 V. Description of the invention (7)

As shown in the third figure, the front end of the rotary shaft 5 is inserted into the insertion hole 8 a provided in the axial direction of the central part. The mechanism for mounting the sliding key 8 on the rotating shaft 5 on the rotating shaft 5 in a state of restricted rotation, especially as shown in the second and third figures, is provided by the radial direction and the axial direction of the sliding key 8 The long holes 8 b and 8 b and the bolts 9 coupled to the long holes 8 b and 8 b and mounted on the rotating shaft 5 are formed. The slide keys 8 can be made by the bolts 9 and the long holes 8 b and 8 b. The sliding key 8 is pivoted toward the axis at a limited distance. As shown in FIGS. 8 to 10 in particular, the sliding key 8 is provided with fixed portions 8 c, 8 on the outer periphery of the one end portion at intervals of 180 °. c, on the other side is provided with a crotch 8d.

One side of the fixed part 8 c, 8 c provided with the slide key 8 can be folded and rotated to be inserted inward, and the outer periphery is provided with a convex shape as shown in Figs. 11 to 13 The rotation fixing mechanism 1 a formed by the part and the concave part is a cam 10, and the bolt 9 that is combined with the slide key 8 is inserted into the connection hole 1 0 c, and is fixed to the rotation shaft 5 and installed. The outer cam 10 is inserted into the mounting hole 1 b of the mounting cylinder portion 1 a provided in the speaking portion 1, and the rotary fixing mechanism 10 a is composed of a concave portion and a convex portion provided inside the mounting hole 1 b. The coupling portion 1 c is coupled to rotate at the same time as the mounting cylinder portion 1 a of the speaking portion 1, and the outer cam 10 is provided with a cam portion composed of a pair of convex portions 1 1 a and a concave portion 1 1 b. 11. The structure of the outer cam 10 is shown in Figures 11 to 14 in detail. Secondly, as shown in the second and third figures, at the same time as the rotating shaft 5, the fixed portions 8c and 8c of the slide key 8 can be folded into the deformed insertion hole 10d. Inside the circular insertion hole 10b of the outer cam 10, a rotatable inner cam 12 is housed, and the inner cam 12 is further provided with an outer cam

Page 11 1235797 V. Description of the invention (8) A pair of fixing protrusions 突出, ... protruding in the direction of == 11, that is, A: ”The portion of the deformed insertion hole 12 b whose surface is slightly gourd-shaped, hanging day ^, The fixed part 8 and 8c of the slide key 8 are carbonized, and the pressure is known as described later by pressing (q ^ 箐 弹 箐 丨 ... counterbalance will Γ slip = key 8 and the deformed insertion hole 12 of the " press cam 12 as described later The fixed portions 8C, 8C of the make / human key contact 8 are separated from the internal contact such as% @ b, and the fixed portions 8c, 8c will hold part of the circular insertion hole 12 of the deformation insertion hole 12b. The bucket i ^ t is free to rotate in any direction. When the inner wheel 12 is rotated in the insertion hole 12c, the fixed parts 8C, 8c of the slide key 8 and 2 are deformed through the insertion hole 1 2b and circular. The section 1 2d between the insertion holes 1 2c is “= returned to the position, that is, will not be returned” + set. The structure of the internal cam 12 is as detailed as that of the second figure and especially the second figure and As shown in the third figure, the inward convex: 、: and the outer cam 10 are opposite to each other, and the rotation shaft 5 is inserted into the axial through hole 15a provided at the central portion, and the sliding cam 15 is provided as shown in the nineteenth to the ninth figures. As shown in figure 22, The sliding cam 15, which is the cam part formed by the inner cam 12 and the outer cam 10 pair of the convex part 16a and the concave part 16b, is won on the same day and J is placed on the outer periphery of the convex part; Set on the food body 6 = Fit with the charcoal part 6d formed by the convex part, so that it slides: the wheel will be constrained to the box body 6 ... and as shown in the figure. : 1 'As the first-:, in the first compression projectile 1 of the release vehicle 5 1235797 V. Description of the invention (9) Between the cymbal part 8 d of the moving key 8 and the outer cam 10, there is a roll-back The sliding key 8 and the second compression spring 17 having a weaker spring force than the first compression spring 14 cause the sliding cam 15 to constantly fold in the direction of the inner cam 12 and the outer cam 10, which is the first The left direction in one figure, and the sliding key 8 will always be in the right direction in the second figure; Figure No. 18 is a washer. Therefore, the speaking part 3 of the second member is speaking relative to the first member. When the part 1 is closed, as shown in FIG. 23, the sliding cam 15 moves to the right, and the convex part 16a of the cam part 16 is fixed by the fixed convex part 12a. Out Between the convex part 11 a of the cam part 11 of the cam 10 and the fixed convex part 1 2 a of the inner cam 12, in this state, the inner cam 12 will rotate clockwise when viewed from the right side, but because The fixed parts 8 c and 8 c of the slide key 8 and the deformed insertion hole 1 2 b are in a coupled state, so they will remain locked. That is, the slide key 8 will be connected to the outer cam 10 through the bolt 9. The outer cam 10 is engaged with the mounting cylinder portion 1 a of the speaking portion 1 of the first member by the rotation fixing mechanism 10 a, so it is prevented from rotating, and the fixed portion 8 c of the sliding key 8 is prevented from rotating. , 8c and the deformed insertion hole 1 2 b are in a coupled state, so as described above, when the sliding cam 15 is pressed, the inner cam 12 rotating clockwise in a clockwise direction will be prevented from rotating, and The fixed convex parts 1 2 a and 1 2 a fix and lock the convex parts 16 a and 16 of the cam parts 16 of the sliding cam 15. From this state, the elastic force of the buckle 13 and the second compression spring 17 is balanced. When pressed to the right in the figure, the slide key 8 is simultaneously bent in the right direction in the figure, thereby fixing the slide key 8 8 c, 8 c and the deformed insertion hole 1 2 b will disengage and move toward the circular insertion hole 1 2 c. Therefore, the inner cam 12 can be rotated, and the convex portion of the sliding cam 15 is released. 1 6 a Fixed, so the sliding convex

1235797 V. Description of the invention (10) The wheel 15 will be pressed in the left direction by the elastic force of the first compression spring 14 and guided to the convex portion 1 1 of the cam portion 11 of the outer cam 10 The tilting guide portion 1 1 c generates a rotating moment, as seen from the right side of the second figure, it will rotate clockwise and fall into the recess 1 1 b of the cam portion 11 of the outer cam 10. At this time, the sliding cam 15 is constrained to rotate on the box body 6, because the box 6 is constrained to rotate on the mounting tube portion 3a of the receiver 3 of the second member, so the receiver 3 will face the inner cam 12 at the same time. Rotate clockwise and turn on automatically. The automatic angle is about 160 ° in this embodiment. The second and third figures are diagrams of the state. Within the range of the opening angle, slide the key 8 The fixed parts 8 c and 8 c will be fixed to the segment part 1 2 d of the inner cam 12 to allow the inner cam 12 to rotate. When the receiving part 3 is to be closed, the speaking part 1 can be supported by one hand. With one hand, press the receiver 3 in the counterclockwise direction to close it. At this time, the slide cam 15 and the box body 6 rotate in the counterclockwise direction at the same time. Convex portion 1 6 a, press the fixed convex portion 1 2 a of the inner cam 12 to the same direction, so that it also rotates counterclockwise, and board the inclined guide portion 1 1 c of the outer cam 10, and Competing with the elastic force of the first compression spring 14 and folding in the right direction in the figure, when the receiver 3 and the speaker 1 are close to the closed position, the fixed parts 8 c and 8 c of the slide key 8 and the internal cam 12 are deformed. The positions of the insertion holes 1 2 b will match, so the inner cam 12 will return to the original position and be locked, but by the rotational force of the sliding cam 15, the convex portion 16 a of the cam portion 16 will pass over The fixed convex portion 12a of the inner cam 12 is inserted between the fixed convex portion 12a of the inner cam 12 and the convex portion 1 1a of the cam portion 11 of the outer cam 10 as shown in FIG. Fixed, so that the speaking unit 1 of the first component and the speaking unit 3 of the second component will be closed

Page 14 1235797 V. Description of the invention (11), but locked in the closed state. The above implementation type is described by using the receiving part 3 of the second component to automatically open to 160 ° with respect to the speaking part 1 of the first component, but the automatic opening angle is not limited. For example, it can be automatically opened to 90 °, and then manual opening and closing can be used later; in addition, the full opening angle of 160 ° is only an example, and the opening angle is not limited; furthermore, the above implementation type is used for an electronic device The embodiment of the hinge, however, it is also possible to use one more hinge on the installation cylinder portion 1 d on the right side of the speaking portion 1 and the installation cylinder portion 3 a on the reception portion 3, and this kind of hinge can also be opened from the predetermined The hinge that generates frictional torque at an angle is treated as another hinge. Secondly, instead of pressing the button 1 and 3, but to open the receiver 3 and the speaker 1, you can use your fingers to press or pull the receiver 3 in the direction of opening the speaker 1, sliding the cam 1 5 The convex portion 16 a of the cam portion 16 will deflect against the pressing force of the first compression spring 14 and will fold to the right in the figure and pass over the fixed convex portions 1 2 a and 1 2 of the inner cam 12. a. By this, the opening action of the speaking part 3 and the speaking part 1 is allowed, and then, as described above, it is automatically opened to 160 °. In this state, when the speaking part 3 and the speaking part 1 are to be closed, the internal cam 1 2 is locked by the slide key 8. Therefore, when the slide cam 15 rotates, the inner cam 12 will not rotate at the same time, but the convex portion 16a of the cam portion 16 of the slide cam 15 will pass the fixing of the inner cam 12 The convex portions 12a and 12a are thereby fixed and locked between the fixed convex portions 12a and 12a and the convex portions 1a and 1a of the cam portion 11 of the outer cam 10. In summary, the "hinge for an electronic machine and an electronic machine having the hinge" provided by the present invention does meet the requirements for granting a patent.

1235797 V. Description of Invention (12) The law filed a patent application and prayed for the patent, which is really a prayer. However, the above are only the preferred and feasible embodiments of the present invention. For example, any changes made by using the above methods, shapes, structures, and devices of the present invention should be included in the scope of rights of the present case. [Illustration of drawing number] A • • • Hinge for electronic equipment 1 • • • Speaking section la • • • Mounting tube section lb • • • Mounting tube section 1 c • • • Coupling section 2a • • • Microphone section 2b • • • Keyboard section 3 • • • Receiver section 3 a • • • Cylinder section 3b • • • Mounting hole 3c • • • Coupling section 3e • • • Next wall 4a • • • Headphone section 4b • • • Display unit 4c • • • Antenna 5 • • • Rotating shaft 5 a • • * Turning section 6 • • • Box body 6 a • • • Rotary fixing mechanism 6b • • • Side wall 6 c • • • Bearing hole 6d • • • Hairpin section 7 · · · E-ring 8 · · · Slide key 8 a · • • Insertion hole 8b · · · Long hole 8 c · · · · Fixing part 8d · · · Hoop 9 · • • Bolt 10 —— • Outer cam 10a · • • Rotary fixing mechanism, 10b · · • Round insertion hole 10c · • • Connection hole 10d · · • Deformed insertion hole 11 · • · Cam portion 11a · · • Convex portion

Page 16

1235797

Page 17 V. Description of the invention (13) lib ··· Recess 11c ··· Tilt guide 12 ··· Inner cam 12a ··· Fixed protrusion 12b ··· Circular insertion hole 12c ··· Deformation Insertion hole 12d · · · Section 13 · · · Pressing buckle 14 · · 1st compression spring 15 · · · Slide cam 15a · · · Insertion hole 16 · · • Cam portion 16a · · · Convex portion 16b · ·· Recess 16c ··· Rotary fixing mechanism 17 ··· Second compression spring 篑 18 ··· Washer 1235797 Brief description of the drawing The first figure is the opening of the talking part of a mobile phone using the hinge for an electronic device of the present invention and The plan view seen at the receiver; the second view is a plan view corresponding to the first view, illustrating a part of the use state of the hinge of the electronic machine related to the present invention; the third view is corresponding to the second view, illustrating the related electronic of the present invention Plane sectional view of the state of use of the machine hinge; The fourth picture is a right side sectional view of the electronic machine hinge shown in the first picture; the fifth picture is the pressure of the electronic machine hinge shown in the first picture removed Left side as seen when buckled Figure;

The sixth figure is a cross-sectional view taken along line AA of the first figure; the seventh figure is a cross-sectional view taken along line BB of the first figure; the eighth figure is a plan view of the sliding key; the ninth figure is a right side view of the sliding key; The tenth figure is the front view of the sliding key; the eleventh figure is the plan view of the outer cam; the twelfth figure is the right side view of the outer cam; the thirteenth figure is the front view of the outer cam; the fourteenth The figure is an expanded view of the cam portion of the outer cam; the fifteenth figure is a plan view of the inner cam; the sixteenth figure is a right side view of the inner cam; the seventeenth figure is a front view of the inner cam; Figure 8 is an expanded view of the cam portion of the inner cam; Figure 19 is a plan view of the sliding cam; Figure 20 is a left side view of the sliding cam;

1235797 on page 18 is a simple illustration. The twenty-first figure is a front view of the sliding cam. The twenty-second figure is an expanded view of the cam portion of the sliding cam. The twenty-third figure is an electronic illustration related to the present invention. An illustration of the action of a machine with a hinge.

Claims (1)

1235797 VI. Scope of patent application ^ 1. A hinge for an electronic device, characterized in that it is a hinge that connects a first member and a second member that can be relatively opened and closed, and has a structure that includes a rotation fixing mechanism on the outer periphery to insert the first member or the second member. Either a box body to which the tube portion is fixed and fixed, and one end portion side of the box body is fixed to a rotation shaft to which the box body is mounted, and rotation is restricted on the rotation shaft. One end of the mounted part can be folded in the direction of the axis, the sliding key with a fixed part, and a rotation fixing mechanism on the outer periphery can be inserted into the other mounting cylinder of the first member or the second member to fix it. The slide key can be stored in a foldable manner in the direction of the inner axis, and is restricted to rotate outside the cam provided on the rotation axis, and has a cam directed in the direction of the central portion, and together with the rotation axis, passes through the cam outside the slide key. The inner cam can be folded in the direction of the axis, and the inner cam of the fixed convex part which is fixed and disengaged by the fixed part and the rotation angle of the slide key, and the inner cam and the front The outer cam is opposed to the central axis, penetrates the rotation shaft, rotates the restraint in the box body, and is provided with a sliding cam that can be folded in the axial direction, and the sliding cam is elastically provided between the sliding cam and the box. A first compression spring between the body, a second compression spring elastically disposed between the sliding key and the outer cam, and having a weaker spring force than the first compression spring, a pressure buckle mounted on the sliding key, and The outer cam has a cam portion in the same direction as the inner cam, and the slide cam has a cam portion on the side opposite to the cam portion of the outer cam and the inner cam. In general, the cam portion of the cam portion of the slide cam is convex. Part is fixedly engaged with the fixed convex part of the inner cam that is prevented from rotating by the slide key, but the pressing operation of the pressing button is performed. Page 20 1235797 6. When applying for a patent, the coupling state between the fixed part of the slide key and the fixed convex part of the inner cam will be disengaged, so that the cam part of the slide cam is guided to the cam part of the outer cam, and Rotate at the same time as the box. 2. The hinge for an electronic device according to item 1 of the scope of patent application, wherein the inner cam has a deformed insertion hole fixedly engaged with the fixed part of the slide key to prevent rotation, and allows the slide key to be fixed. A circular insertion hole that rotates at a portion, and a segment portion provided to prevent the fixed portion in the circular insertion hole from moving in the axial direction by the rotation angle. 3. The hinge for an electronic device according to item 1 of the scope of patent application, wherein the rotation axis restricts the rotation state, and the mechanism that allows the slide key to fold in the axial direction is provided in a radial direction penetrating the slide key. The long hole in the axial direction and the bolt mounted on the rotation shaft coupled with the long hole, and the mechanism for fixing the outer cam to the rotation shaft may also be the aforementioned bolt. 4. An electronic device characterized in that the hinges of the first member and the second member that can be relatively opened and closed can be connected with each other, and has a structure including a rotation fixing mechanism on the outer periphery, and a connection portion of the first member and the second member is inserted so that A fixed box body, and an axis direction penetrating the center of the box body, one end portion side is fixed to a rotation shaft mounted on the box body, and the rotation shaft is restrained so that the shaft direction can be folded and installed One end part has a sliding key with a fixed part and a rotation fixing mechanism on the outer periphery. The connecting part of the first member and the second member is inserted to fix it, and the sliding key can be folded in the direction of the inner axis. And the rotation is restricted to the cam provided outside the rotation shaft, and has a rotation toward the center axis, and the rotation Page 21 1235797 VI. Scope of patent application Together with the shaft, the cam is inserted into the cam other than the slide key, so that it can be folded in the axial direction. The internal cam of the fixed convex part which fixes and disengages by the fixed part of the slide key and the rotation angle, and the same The inner cam and the outer cam are opposed to each other, and pass through the rotation shaft in the direction of the central axis, so that the restraint is rotated in the box body, and the slide cam can be received in a foldable manner in the axial direction, and the slide cam is elastically provided on the slide cam A first compression spring between the casing and the casing, a second compression spring provided between the sliding key and the outer cam, and having a weaker spring force than the first compression spring, and a pressure buckle mounted on the sliding key, And a cam portion in the same direction as the outer cam and the inner cam, and a cam portion on the side opposite to the cam portion of the outer cam and the inner cam, and in general, the cam of the slide cam The convex part of the part is fixedly engaged with the fixed convex part of the inner cam that is prevented from rotating by the slide key. However, when the pressing operation is performed on the press button, the fixing part of the slide key is fixed. The engagement state with the fixed convex portion of the inner cam is disengaged, so that the cam portion of the sliding cam is guided to the cam portion of the outer cam, and rotates simultaneously with the case. 5. The electronic device according to item 4 of the scope of patent application, wherein the aforementioned The connecting portion is constituted by the mounting cylindrical portion of the first member and the second member. 6. The electronic device according to item 4 of the scope of patent application, wherein the internal cam has a deformed insertion hole fixedly engaged with the fixed portion of the slide key to prevent rotation, and allows the fixed portion of the slide key to rotate Circular insertion hole, and to prevent the circular insertion hole by the rotation angle Page 22 1235797 6. The fixed section within the scope of the patent application is set to move in the axial direction. 7. The electronic device according to item 4 of the scope of patent application, wherein the rotation axis restricts the rotation state, and the mechanism that allows the slide key to fold in the axial direction is provided in the axial direction to penetrate the radial direction of the slide key. The long hole and the bolt installed on the rotation shaft coupled with the long hole, and the mechanism for fixing the outer cam to the rotation shaft may also be the aforementioned bolt. Φ Page 23