JP4122312B2 - HINGE DEVICE AND ELECTRONIC DEVICE USING HINGE DEVICE - Google Patents

Description

  The present invention relates to a hinge device provided at a pivotally mounted portion of an electronic device such as a mobile phone and a mobile, and an electronic device using the hinge device.

  For example, a conventional foldable mobile phone is provided with an operation unit on which the numeric keys and function keys are arranged on the upper surface side of the lower main unit, and a liquid crystal panel on which a predetermined display is made by the key operation of the operation unit. The display part is provided on the lower surface side (polymerization side) of the upper overlapping part (lid part), the main body part and the overlapping part are connected via a hinge device, and the main body part and the overlapping part are folded in half. From the folded closed state where the operation part is concealed by the superposition part, the overlapping part is swung up and down by the hinge device and reversed approximately, so that the operation part and the display part can be switched to the open state. Yes.

  In addition, in the conventional electronic device that covers the operation part of the main body part with a superposition part that simply turns up and down, the display part is also concealed in a superposition state where the operation part is concealed although it can be folded and compactized. In many cases, the structure is inconvenient and the use in a compact state must be restricted.

  In addition, the display part is concealed in the closed state that is overlapped for compactness, and the display part is placed on the front side when it is erected by opening and turning the overlapping part during use, so it is easy to see the display part, If it is difficult to show the display part to the person, and the camera part is provided on the opposite side of the display part, if you want to display your face on the display part, etc. This makes it difficult to shoot and shutter operation.

  Therefore, the applicant is configured to be able to turn the front and back by rotating further at a predetermined angle in the middle of opening or at a predetermined angle in the middle of opening, and in other words, even when folded without using a key operation, for example, Even in a compact state where the operation unit is concealed by superimposing the overlapped part with the display unit on the main unit, the display unit can be concealed with the operation unit with the display unit facing down as before. The display unit is arranged on the upper side so that the display unit can be seen and functioned even in a compact closed state, and can be reversed at a predetermined angle when the overlapping unit is raised when using the camera. I proposed something that I made.

In other words, it breaks the conventional fixed concept that opens and closes only by undulating rotation, and it is configured so that the opened overlapped part can be turned upside down by further rotation and folded when not in use or requiring no key operation. At the same time, the display part can be concealed with the operation part with the display part facing down as before, or the display part is arranged on the upper side by rotating and reversing, and the display part can be visually recognized even in a compact closed state. In addition, for example, undulation rotation is restricted during reversal that is rotated and rotated, for example, it can be reversed at a predetermined opening position, but rotation can be performed during other opening. In addition, it cannot be closed and rotated if it is in the middle of reversal in the open state, and the operation part is accidentally pushed or damaged by closing the overlapped part in the twisted position. It can also be used as an equipment device, and the opening and closing operation is easy, making it extremely easy to handle, preventing malfunctions, and having excellent durability, such as excellent durability. mobile phone, proposed an electronic device using the hinge device as well as the hinge device capable of realizing an electronic device for mobile, such as (Japanese Patent Application No. 200 No. 2 -40666, etc.).

Japanese Patent Application No. 2002-40666 Japanese Patent Application No. 2003-206556

Such hinge devices, some of which are the following, such as configuration (the same components as the present invention described later are denoted by the same reference numerals.).

The first member 2 (main body portion 2) and the second member 4 (overlapping portion 4) are pivoted up and down so as to be in an open state in which the overlapping surface is exposed by opening and rotating from the closed state where they are overlapped with each other, Further, the hinge device for connecting the overlapped surface and the exposed surface of the second member 4 so as to be able to be reversed and switched by making the second member 4 that rotates and rotates relative to the first member 2 relatively rotatable. H, one attachment portion 5 of the opening / closing rotation hinge portion HA provided with the undulating rotation shaft portion 9 is connected to the first member 2, and the other attachment portion 6 is connected to the rotation rotation shaft portion 16. The rotation rotation hinge portion HB is connected to the second member 4 via the rotation rotation hinge portion HB provided, and the rotation rotation hinge portion HB is provided so as to be freely raised and lowered by the opening / closing rotation hinge portion HA. Closed in which the second member 4 overlaps the first member 2 on the HA and the rotation pivoting hinge HB. The second member 4 is rotatable at least 180 degrees with respect to the first member 2 in a predetermined rotation position that is opened and rotated by a predetermined angle from the state or in an open state that is opened and rotated more than a predetermined angle; At least in the rotation position where the rotation is not more than the predetermined angle, the second member 4 is rotated relative to the first member 2 without twisting so that the second member 4 and the first member 2 can overlap. A rotation restricting mechanism S that cannot rotate or rotate at a predetermined angle or more from the rotation position is provided, and the rotation restricting mechanism S that is rotatable with respect to the undulating rotation shaft portion 9 of the opening / closing rotation hinge portion HA is provided. The rotation rotation shaft portion 16 is rotatably provided on the shaft attachment portion 10 of the rotation rotation hinge portion HB, and the end portion of the rotation rotation hinge portion HA protruding to the inside of the shaft attachment portion 5 The second member 4 rotates and rotates together with the rotation of the second member 4, and the front The engagement portion 7 for undulating pivoting provided by undulations rotation of the second member 4, the regulating portion 8 that regulates the self turn dynamic and undulating pivoting of the engagement portion 7 and an inner of the shaft mounting portion 10 for example some of which have a configuration in which the shaft mounting portion 10, as Japanese Patent Application No. 2003-206556 undulating rotation shaft portion 9 of the rotatably said closing pivot hinge HA provided. The shaft mounting portion 10 is a U-shaped member, and both leg portions 10A of the U-shaped member are rotatably provided on the undulating rotation shaft portion 9, and the rotation rotation shaft portion 16 is rotated on the erection portion 10B. The outer surface of the undulating rotation shaft portion 9 between the leg portions 10A on the inner side of the U-shaped shaft mounting portion 10 is designed in the following shape. That is, at the rotation rotation position where the first member 2 and the second member 4 can overlap, the second member 4 is allowed to rotate up and down, and the first member 2 and the second member 4 are rotated at a predetermined angle from the closed state where they overlap each other. The second member 4 is allowed to be rotated and rotated at least 180 degrees with respect to the first member 2 in the opened position in which the second member 4 is opened or rotated more than a predetermined angle. In the rotation position where the above-mentioned rotation is not performed, the second member 4 is moved from the rotation rotation position where the second member 4 and the first member 2 can overlap with each other with respect to the first member 2. The rotation restricting mechanism S is configured by setting the outer surface shape of the restricting portion 8 with respect to the locking portion 7 so that the rotation cannot be rotated or the rotation cannot be rotated more than a predetermined angle.

  For example, the locking portion 7 rotates and rotates with respect to the restricting portion 8 together with the rotation of the overlapping portion 4, and revolves and rotates with respect to the restricting portion 8 together with the undulating rotation of the overlapping portion 4. The portion 7 has a flat plate shape or a concave shape having a short diameter portion and a long diameter portion such as a drum shape or an ellipse shape, and the restriction portion 8 has a concave shape for receiving it. The shape of the locking portion 7 and the regulating portion 8 is not limited to this, and can be designed in various ways. For example, the locking portion 7 has a flat plate shape having a long side portion and a short side portion with respect to the rotation surface of rotation. In this case, the restricting portion 8 is formed by providing a concave portion between the large diameter portions of the undulating rotation shaft portion 9 (the central portion of the large diameter undulating rotation shaft portion 9 is dug) Although the restricting portion 8 is formed on the outer surface portion of the undulating rotation shaft portion 9), when the locking portion 7 is disposed at a position where it should be able to rotate and rotate, a sufficient diameter in all directions is allowed to allow this. In order to allow the undulation to rotate in a predetermined rotation direction, and to allow the revolving movement (undulation rotation) of the locking portion 7 in the rotation direction of the undulation rotation shaft portion 9, The recess portion and the recess space are formed so as to be continuous with each other, and the continuous recess portion that allows the undulation rotation is prevented from rotating and rotating. Wider but a narrow shape from the long side portion.

  As another example, the engaging portion 7 has a concave surface whose bottom surface escapes the undulating rotation shaft portion 9 so that the undulation rotation shaft portion 9 can be revolved in the undulation rotation direction while covering the undulation rotation shaft portion 9 during the undulation rotation. At this time, the rotation is prevented and the rotation is prevented, but it can be designed in various ways, such as being configured so that the rotation is not blocked by a wide recess in all directions at the fully swung position. It is.

  That is, for example, until the overlapping portion 4 is swung up and down 90 degrees, the overlapping portion 4 cannot rotate due to the engaging portion 7 hitting the restricting portion 8 and cannot rotate, and for example, the main body portion 2 and the overlapping portion 4 are overlapped. At a position where there is no twist (0 degree, 180 degree automatic rotation position), the position is rotated up and down within the restricting portion 8 and does not interfere with the restricting portion 8, but also, for example, a position where the 90 degree overlapping portion 4 is rotated and rotated. Then, it is possible to configure so that the locking portion 7 completely contacts the restricting portion 8 and cannot be closed and rotated beyond the substantially raised position (the rotation position where the main body portion 2 and the overlapping portion 4 are substantially perpendicular). is there.

  Therefore, by configuring the hinge device as described above, the undulation rotation is restricted during the reversal that is rotated and rotated, for example, it can be reversed at the open position, but the rotation cannot be rotated during the opening, and the open state is not achieved. It is not possible to rotate and rotate while the reversal is in progress, but it is possible to prevent the operation part from being accidentally pushed or damaged by closing the overlapped part in the twisted position. Applications are widespread, and the opening and closing operations are easy, extremely easy to handle, prevent malfunctions, have excellent durability, such as innovative mobile phones and mobile electronic devices, and these It becomes the hinge device used for.

  However, in the configuration so far, the outer surface portion of the undulating rotation shaft portion 9 is formed in a predetermined shape corresponding to the locking portion 7 (from the relationship with the locking portion 7), so that the undulating rotation shaft portion 9 A restricting portion 8 is formed.

  In other words, the restricting portion 8 is integrally formed on the undulation rotation shaft portion 9 by molding or processing the position corresponding to the locking portion 7 of the undulation rotation shaft portion 9 into a predetermined shape.

  On the other hand, however, a configuration in which the U-shaped shaft mounting portion 10 is rotatably provided on the undulating rotation shaft portion 9, that is, the undulating rotation shaft portion 9 is provided in the shaft support hole 10C provided in the leg portion 10A of the shaft mounting portion 10. The shaft mounting portion 10 is rotatably provided on the undulating rotation shaft portion 9, and the restriction portion 8 is integrally formed on the outer surface of the undulating rotation shaft portion 9 between the leg portions 10 </ b> A of the shaft mounting portion 10. .

  For this reason, the undulation rotation shaft portion 9 itself cannot be made large in diameter, and the level difference in which the outer surface portion of the undulation rotation shaft portion 9 is recessed cannot be made sufficiently large (the recess is deepened). . In other words, since the outer diameter (the maximum outer diameter of the restricting portion 8) of the undulating rotation shaft portion 9 itself that is a base for molding or processing the restricting portion 8 is restricted because it needs to pass through the leg portion 10A, it cannot be made large. (The restricting portion 8 cannot be formed by the deep recess), and therefore the step edge that prevents the locking portion 7 from rotating cannot be formed high enough to prevent the locking portion 7 from rotating as expected. Although it can be done, there is a possibility that strong turning force is applied, or the long-term use may prevent the recesses from being stepped by the stepped portions, which may be insufficient due to wear or the like.

  On the other hand, the shaft support hole 10C of the leg portion 10A of the shaft mounting portion 10 is enlarged to increase the diameter of the undulating rotation shaft portion 9 (restriction portion 8) so that the restriction portion 8 has a sufficiently deep recess. If it is passed, the hinge device cannot be made compact, such as the shaft mounting portion 10 being tall, and the problem that it cannot be incorporated into the required space will occur.

  Therefore, it has been unavoidable to have a configuration that requires various improvements such as processing accuracy of the restricting portion 8 formed on the undulating rotation shaft portion 9 and hardening of this material.

  In view of such problems, the present invention is based on a revolutionary concept change and is easily improved, so that the concave portion is deep without hindering compactness, the rotation of the locking portion 7 is ensured, and the durability is improved. Provided is a revolutionary hinge device excellent in practicality and an electronic device using the hinge device, in which the restricting portion 8 capable of stopping and stopping can be simply configured and arranged between the leg portions 10A of the shaft mounting portion 10 as before. Is.

  The gist of the present invention will be described with reference to the accompanying drawings.

The first member 2 and the second member 4 can be pivoted up and down so that the first member 2 and the second member 4 are opened and rotated from the closed state where the first member 2 and the second member 4 are overlapped, and the overlapping surface is exposed. A hinge device H for connecting the overlapping and exposed surfaces of the second member 4 so as to be able to rotate and rotate relative to each other so that the second member 4 can be rotated and rotated relatively. One attachment portion 5 of the opening / closing rotation hinge portion HA provided with 9 is connected to the first member 2, and the other attachment portion 6 is connected via a rotation rotation hinge portion HB provided with a rotation rotation shaft portion 16. Connected to the second member 4, the rotation pivoting hinge part HB is provided by the opening / closing rotation hinge part HA so that it can be pivoted up and down, and the opening / closing rotation hinge part HA and the rotation rotation hinge part HB are The second member 4 is rotated by a predetermined angle from the closed state in which the second member 4 overlaps the first member 2. In the opened state in which the second member 4 is opened and rotated by a predetermined rotation position or a predetermined angle or more, the second member 4 can be rotated and rotated by at least 180 degrees with respect to the first member 2 and is opened and rotated by at least the predetermined angle or more In the rotation position where the second member 4 is not rotated, the second member 4 cannot rotate relative to the first member 2 from the rotation rotation position where the second member 4 and the first member 2 can overlap with each other. Alternatively, a rotation restricting mechanism S that cannot rotate and rotate more than a predetermined angle is provided, and the axis of the rotation rotation hinge portion HB provided to be rotatable with respect to the undulation rotation shaft portion 9 of the opening / closing rotation hinge portion HA. The rotation part 16 is provided on the attachment part 10 so as to be rotatable. The end part of the rotation part 16 of the rotation part hinge 16 that protrudes to the inside of the shaft attachment part 10 The two members 4 rotate and rotate together with the rotation of the second member 4, and the second member 4 A locking portion 7 that swings up and down due to prone rotation is provided, and a restricting portion 8 that restricts rotation and undulation rotation of the locking portion 7 is provided inside the shaft mounting portion 10 and is connected to the shaft mounting portion 10. Is provided on the undulation rotation shaft portion 9 of the opening / closing rotation hinge portion HA, and the regulating portion 8 is formed by forming the outer surface of the undulation rotation shaft portion 9 in a predetermined shape, and the undulation rotation shaft. The undulation rotation shaft portion 9 is connected to a restriction portion forming member 8A having an outer surface formed in a predetermined shape, and the restriction portion 8 is provided in the undulation rotation portion 9 by another part. The first member 2 and the second member 4 are allowed to overlap with each other, and the second member 4 is allowed to rotate up and down at a rotation rotation position where the first member 2 and the second member 4 can overlap with each other. In the open rotation state, the second rotation position is the predetermined rotation position or the predetermined rotation position is greater than the predetermined angle. The material 4 is allowed to reversely rotate at least 180 degrees with respect to the first member 2, but the second member 4 is moved to the first member 2 at a rotation position where the material 4 is not opened and rotated more than the predetermined angle. On the other hand, the second member 4 and the first member 2 can be overlapped with each other with respect to the locking portion 7 so as not to rotate or to rotate more than a predetermined angle from the rotation position without twisting that can overlap. The outer surface shape of the restricting portion forming member 8A of the restricting portion 8 is set to constitute the rotation restricting mechanism S, the shaft mounting portion 10 is a U-shaped member, and both leg portions 10A of the U-shaped member are the undulations. together rotatably provided on the rotation shaft portion 9, the self-turn shaft portion 16 to the installing portion 10B disposed for free self turn movement, together uneven by the urging of the spring 11 the undulating rotating shaft 9 as an axis The cam portion 13 of the cam engaging portion 14 and the cam engaging portion 14 are connected to the undulating rotation shaft portion 9. In the co-rotation state slidably inserted, provided said cam engaging portion 14 to the leg portion 10A of the shaft attachment portion 10 of the U-shape, the inner leg portion 10A of the U-shaped shaft mounting portion 10 The restricting portion forming member 8A is disposed therebetween, and the restricting portion forming member 8A is provided with a shaft connecting hole 8B that penetrates and connects the undulating rotation shaft portion 9, and the leg portion 10A of the shaft attaching portion 10 is provided. the undulating through the rotation shaft 9 is provided a shaft supporting hole 10C that rotatably connected with, the relief rotary shaft portion 9 of each of the leg portions 10A of the shaft mounting portion 10 of the U-shaped axis The shaft mounting portion 10 is rotatably provided on the undulating rotation shaft portion 9 through the support hole 10C, and the undulating rotation shaft portion 9 inserted between the both leg portions 10A is disposed between the both leg portions 10A. through connected via the shaft coupling hole 8B of the restricting portion forming member 8A, setting the relief rotation shaft 9 and the regulating portion 8 between the legs 10A Those of the hinge device being characterized in that the structure was.

Further, when the second member 4 is rotated and rotated at a twisted position in the middle of 180 ° reversal rotation in a rotation position rotated by a predetermined angle from the closed state or in an open state rotated by a predetermined angle or more. Is characterized in that the rotation restricting mechanism S is configured such that at least the angle at which the end of the second member 4 comes into contact with the upper surface of the first member 2 cannot be closed and rotated. those of the hinge device according to claim 1 Symbol placement.

Further, the superposition part 4 is turned upside down so that the main body part 2 provided with the operation part 1 and the superposition part 4 provided with the display part 3 can be turned up and down relatively from the superposed state. There is a hinge device H that connects the body portion 2 and the overlapping portion 4 so that they can rotate and rotate as much as possible. The hinge device according to claim 1 , wherein the portion 2 is the first member 2 or the second member 4, and the overlapping portion 4 is the second member 4 or the first member 2. The present invention relates to an electronic apparatus using a hinge device.

Since the present invention is configured as described above, for example, it can be reversed in the open position, but cannot rotate and rotate in the middle of opening, and cannot be closed and rotated in the middle of reversal in the opened state, and the overlapping portion is twisted. It can also be designed so that it does not accidentally push the operation part by closing it or damage the main body part, and it can be used as an equipment device, and the opening and closing operation is easy, making it extremely easy to handle, Even if the outer diameter of the restricting portion forming member that forms the restricting portion is increased, the restricting portion passes through the shaft mounting portion even if the restricting portion forming member can be prevented from malfunctioning and excellent in durability. It is not necessary to pass the restricting portion forming member through the shaft mounting portion, so that a large restricting portion forming member can be arranged inside the shaft attaching portion without enlarging the shaft attaching portion. It can be, yet the relief rotary shaft portion For penetrating connected to control unit formation member, as expected the undulating pivoting shaft unit far regulating portion may be provided, therefore, in the configuration attained as usual compact, form sufficiently deep recesses in the regulating portion forming member An innovative hinge device that can form a sufficiently high contact surface (step surface) that prevents the rotation of the locking portion, can reliably prevent the rotation of the locking portion, and has excellent durability. An electronic device using the hinge device can be easily realized by this simple improvement.

In the invention of claim 2 Symbol placement, more easily implement the present invention, also in the fourth aspect of the present invention, for example, in the open position can be reversed, not be self-turn movement on the way open, also open In the middle of reversing in the state, it cannot be closed and rotated, and it is possible to prevent the operation part from being accidentally pushed or damaged by closing the overlapped part in the twisted position. In addition, the electronic devices such as mobile phones, mobile phones, etc., which have excellent practicality, such as easy to use, open and close, easy to handle, prevent malfunctions, and have excellent durability. Moreover, it becomes a hinge apparatus used for these.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  For example, in the open state in which the second member 4 (overlapping portion 4) is rotated by 180 degrees with respect to the first member 2 (main body portion 2) in the open state in which the open state is rotated by a predetermined angle or more from the closed state, the closed rotation is again performed. By setting the closed state overlapping each other, the exposed surface and the bottom surface of the overlapped portion 4 in the closed state can be reversed and switched, and the twisted position in the middle of the 180 ° reverse rotation by rotating the overlapped portion 4 in the open state. In this case, it can be designed so that at least the angle at which the end of the overlapping portion 4 comes into contact with the upper surface of the main body 2 cannot be closed and rotated.

  Therefore, the locking portion 7 that rotates and rotates together with the rotation of the overlapping portion 4 and moves up and down together with the rotation and rotation hinge device HB by the up and down rotation of the overlapping portion 4 is used as the rotation rotation axis of the rotation and rotation hinge portion HB. An end of the portion 16 is provided in the shaft mounting portion 10, and the restricting portion 8 for restricting the rotation and undulation rotation of the locking portion 7 is provided as the undulation of the opening / closing rotation hinge HA on the main body 2 side. At the rotational axis position where the main body 2 and the overlapping portion 4 can be overlapped with each other so that the main body 2 and the overlapping portion 4 can be overlapped with each other, the overlapping portion 4 does not interfere with the restricting portion 7 and interferes with the restricting portion 8. In the open state, which is allowed to rotate by a predetermined angle from the closed state where they are overlapped with each other, the overlapping portion 4 is also allowed to rotate 180 degrees with respect to the main body portion 2 in the same manner. At the rotation position where the rotation is not performed, the movement of the locking portion 7 is obstructed by the restriction portion 8, and the overlapping portion 4 and The main body 2 can be superposed on the main body 2 without being twisted at the time of the closing rotation, such as the rotation of the rotation more than a predetermined angle is prevented from the rotation without rotation where the main body 2 can be superposed. In this case, the shape of the restricting portion 8 with respect to the locking portion 7 can be set so that the closed portion cannot be rotated and the end portion of the overlapping portion 4 does not contact the upper surface of the main body portion 2.

In addition, the present invention differs from the conventional configuration in that the undulating rotation shaft portion 9 is inserted between the both leg portions 10A of the U-shaped shaft mounting portion 10 provided with the rotation rotation shaft portion 16 of the rotation rotation hinge portion HB. Thus, while the shaft mounting portion 10 is provided so as to be rotatable with respect to the undulating rotation shaft portion 9, the undulating rotation shaft portion 9 and the regulating portion 8 disposed between the both leg portions 10 </ b > A of the shaft mounting portion 10. Is a separate part, i.e., a predetermined portion of the undulating rotation shaft portion 9 is not integrally formed or processed into a predetermined shape, and the legs of the shaft mounting portion 10 are separate parts from the undulating rotation shaft portion 9. part 10A undulating rotating shaft portion restricting portion forming member 8A, for example, undulating rotating shaft 9 disposed in the regulating portion forming member 8A provided with penetrations linked separately from the relief rotation shaft 9 between 9 due to a configuration in which the restriction portion 8 provided in the relief rotation shaft 9 by concatenating, between legs 10A of the shaft mounting portion 10 and the restricting portion forming member 8A Thin the undulating pivoting shaft 9 for passing regulating portion forming member 8A can be designed larger. As a result, for example, the undulating rotation shaft portion 9 is thin, so that the shaft mounting portion 10 is inserted into, for example, the leg portion 10A (the shaft support hole 10C) of the shaft mounting portion 10 as before, so that the shaft mounting portion 10 can freely rotate on the undulation rotation shaft portion 9. Although the configuration can be provided, even if the outer diameter of the regulating portion forming member 8A is increased, it is not necessary to pass the regulating portion forming member 8A through the leg portion 10A (axial support hole 10C). A large restricting portion forming member 8A (a restricting portion forming member 8A capable of forming a deep concave portion) can be arranged inside the shaft attaching portion 10 without increasing the shaft size (increasing the shaft attaching portion 10). In order to connect the shaft portion 9 and the restricting portion forming member 8A, the restricting portion 8 can be provided on the undulating rotation shaft portion 9 as before.

  Therefore, it is possible to form a sufficiently deep concave portion in the restricting portion forming member 8A with a configuration that can be made compact as in the past, and a contact surface (step surface) that prevents the locking portion 7 from rotating can be formed sufficiently high. The revolutionary hinge device and the electronic device using the hinge device that can reliably prevent the rotation of the portion 7 and have excellent durability can be easily realized by this simple improvement.

  A first embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, the present invention is applied to a mobile phone that can be made compact in size. On the upper surface side of a plate-like main body 2 (first member 2) in which electronic parts such as a circuit board and a power source are housed in a case. An operation unit 1 that performs a keyboard function in which numeric keys and function keys are arranged is provided, and a substantially overlapping plate-like overlapping unit 4 (second member 4) that overlaps the main body unit 2 and covers the operation unit 1 is undulated. It is configured to be pivotally connected by a hinge device H so as to be movable.

  A display unit 3 such as a liquid crystal panel on which a predetermined display is made or a predetermined display is made by the operation of the operation unit 1 or an incoming call is provided on the lower surface side (lower surface) of the overlapping unit 4.

  The connection between the main body portion 2 and the overlapping portion 4 is made by connecting the overlapping portions of both end portions to the undulating rotation shaft portion 9 arranged in the width direction and the rotation turning shaft arranged in the direction orthogonal thereto. Connected by a biaxial hinge device H having a portion 16, the overlapping portion 4 can rotate up and down as usual, and can rotate and rotate 180 degrees in the left and right directions (reversible), and can rotate 180 degrees as an open state. By doing so, the front and back directions of the overlapping portion 4 can be switched, and the concealed surface and the exposed surface of the overlapping portion 4 in the closed state where they are overlapped with each other can be reversed.

  Next, the hinge apparatus H of a present Example is demonstrated.

  In the present embodiment, as described above, the main body portion 2 and the overlapping portion 4 are overlapped with each other to be opened to a predetermined angle with the undulating rotation shaft portion 9 as an axis, thereby opening the overlapping surface. Thus, the overlapping portion 4 and the exposed surface of the overlapping portion 4 can be rotated freely about the rotation rotation shaft portion 16 as the rotation rotation shaft portion 16. Is a hinge device H that is connected so as to be capable of being reversed and switched, wherein one attachment portion 5 of the opening / closing rotation hinge portion HA including the undulating rotation shaft portion 9 is connected to the main body portion 2 and the other attachment portion 6 is connected. Is connected to the overlapping portion 4 via a rotation rotation hinge portion HB provided with the rotation rotation shaft portion 16, and the rotation rotation hinge portion HB is undulated and rotated (revolved) by the opening / closing rotation hinge portion HA. It can be freely rotated, and the open / close rotation hinge portion HA and the rotation rotation hinge portion HB are closed. In the rotation range (open state) in which the rotation portion is opened and rotated more than a predetermined angle from the main body portion 2, the overlapping portion 4 can be rotated forward and backward by 180 degrees with respect to the main body portion 2, and the rotation that is opened and rotated to the predetermined angle. In a rotation position that does not reach the position, a rotation restriction mechanism S is provided in which rotation is prevented and rotation is impossible for a predetermined angle or more, and a state where there is no twist that overlaps with each other is held and restricted. .

  That is, in this embodiment, in the open state in which the rotation is opened by a predetermined angle or more from the closed state, the overlapping portion 4 is rotated 180 degrees with respect to the main body portion 2 and is again closed and rotated to overlap each other. By doing so, it is possible to reversely switch the exposed surface and the bottom surface of the overlapped portion 4 in the closed state, and when the overlapped portion 4 rotates in the open state and is in a twisted position in the middle of the 180-degree reverse rotation, The rotation restricting mechanism S is configured so that at least the angle at which the end of the overlapping portion 4 comes into contact with the upper surface of the main body 2 cannot be closed and rotated.

  Specifically, the rotation portion of the rotation rotation hinge portion HB rotates the locking portion 7 that rotates and rotates together with the rotation rotation of the overlapping portion 4 and moves up and down together with the rotation rotation hinge device HB by the rotation of the overlapping portion 4. This rotation rotation shaft portion 16 is provided at the end of the moving shaft portion 16 in a U-shaped shaft mounting portion 10 provided to freely rotate, and the rotation and undulation rotation of the locking portion 7 is restricted ( A restricting portion 8 that is allowed / blocked) is provided on the undulating rotation shaft portion 9 of the opening / closing rotation hinge portion HA on the side of the main body portion 2, so that the main body portion 2 and the overlapping portion 4 can overlap with each other and rotate without rotation. Then, the overlapping portion 4 is allowed to turn up and down without the locking portion 7 interfering with the restricting portion 8, and similarly in the open state in which the overlapping portion is rotated more than a predetermined angle from the closed state where they overlap each other. 4 is allowed to rotate 180 degrees with respect to the main body 2 by rotating 180 degrees more than a predetermined angle. In the non-rotating position, the movement of the locking portion 7 is obstructed by the restricting portion 8, and the rotation rotation beyond a predetermined angle is prevented from the non-twisting rotation position where the overlapping portion 4 and the main body portion 2 can overlap. Thus, the shape of the restricting portion 8 with respect to the locking portion 7 is set so that the end portion of the overlapping portion 4 does not come into contact with the upper surface of the main body portion 2 during the closing rotation.

  That is, in the present embodiment, the space (the space for disposing the locking portion 7) that allows the rocking and rotating shaft portion 9 of the opening and closing rotation hinge portion HA of the present embodiment to rotate and rotate the locking portion 7. ) As a restriction portion 8.

  More specifically, a shaft mounting portion 10 (base portion 10) that serves as a mounting seat base for the rotation rotation shaft portion 16 of the rotation rotation hinge portion HB is formed in a U-shape, and the opposite leg portions of the base portion 10 are formed. 10A is provided with a shaft support hole 10C hole through which the undulating rotation shaft portion 9 is inserted, and a shaft hole through which the rotation rotation shaft portion 16 is inserted in the upper piece portion (erection portion 10B).

  First, the opening / closing rotation hinge portion HA will be described. The undulating rotation shaft portion 9 inserted through the base portion 10 is disposed in a non-rotating cylindrical case 12 disposed on the side of the base portion 10. In the cylindrical case 12, at least one of the cam portion 13 and the cam engaging portion 14 that engage with each other with the undulating rotation shaft portion 9 as an axis is slidably mounted so as to be rotatable relative to each other. 12 is connected to the fitting connection portion 15 of the first member 2 as the attachment portion 5, and the opposite end of the undulating rotation shaft portion 9 is also engaged with the first member 2. Therefore, in the predetermined undulation rotation position, it is configured to be positioned (cam lock) by the cam engagement bias and the engagement bias by the spring 11. For example, in the closed state, the cam is biased in the middle of the cam engagement. In the open state, cam engagement is held (cam lock), and in the middle of up and down rotation, a rotation resistance is generated by spring bias, and a free stop that holds the released rotation position is realized. Yes.

  In the present embodiment, the cam portion 13 that is inserted through the undulation rotation shaft portion 9 and rotates together is slidably mounted in the cylindrical case 12, and the other cam engagement portion 14 is attached to the undulation rotation shaft 9. Concavities and convexities are formed on one opposing leg portion 10A of the base portion 10 that undulates and rotates relative to the base portion 10 to form a cam engaging portion 14 itself.

  Further, the concave portion is formed in the undulating rotation shaft portion 9 between the opposing leg portions 10A, and the restricting portion 8 is provided.

  Then, the overlapping portion 4 is connected to the base portion 10 that rotates up and down with respect to the main body 2 (the cylindrical case 12 and the up-and-down rotation shaft portion 9) via the rotation-rotation hinge portion HB. ing.

  The rotation rotation hinge portion HB provided with the rotation rotation shaft portion 16 is attached to one end (upper end) of the shaft hole of the upper piece portion (erection portion 10B) of the base portion 10 (shaft attachment portion 10). It connects with the superposition | polymerization part 4 via the part 6, and the rotation rotation shaft part 16 which provided the said latching | locking part 7 in the other end (lower end) is inserted, This rotation rotation shaft part 16 (and the said attachment part 6) In this embodiment, a cam engagement portion 18 that is inserted into the cam portion 17 that is prevented from rotating and is engaged with the cam portion 17 is provided on the upper piece (the erection portion 10B) of the base portion 10 so as to be uneven. The cam portion 13 is slidably provided along the rotation rotation shaft portion 16 and is configured to be engaged and biased by a spring 19.

  Accordingly, the overlapping portion 4 rotates and rotates about the rotation and rotation shaft portion 16 and is cam-locked in a rotation direction that cannot be twisted by the cam engagement between the cam portion 17 and the cam engagement portion 18 so that the overlapped state can be achieved. It is configured as follows.

  In addition, when rotating 180 degrees from a direction without twisting, the cam portion 17 is separated from the cam engaging portion 18 and rotates relative to the spring 19, and is rotated at 0 ° and 180 ° inversion positions. In the same manner as the opening / closing rotation hinge part HA, the cams are locked by engaging the projections and recesses, and a free stop is realized by a spring bias at the middle position of the rotation so that the closing rotation is possible. It is positioned at the 0 degree and 180 degree rotation positions, and is configured not to wobble and rotate.

  Further, in this embodiment, the cam portion 17 or the cam portion 17 (the rotation rotation shaft portion 16) is configured so as not to be rotated by about 180 degrees or more so as to be free of trouble in wiring and to be able to rotate in the forward and reverse directions within this range. In addition, a stopper portion 20 that abuts and engages with the rotating member and the cam engaging portion 18 or a member integrated therewith is provided.

  Further, in this embodiment, the locking portion 7 rotates and rotates with respect to the restricting portion 8 with the rotation of the overlapping portion 4, and revolves with respect to the restricting portion 8 with the undulating rotation of the overlapping portion 4. However, the engaging portion 7 has a flat plate shape or a concave shape having a short diameter portion and a long diameter portion such as a drum shape or an elliptical shape, and the restriction portion 8 has a concave shape for receiving the same. The shape of the engaging portion 7 and the restricting portion 8 is not limited to this, and can be designed in various ways. For example, the engaging portion 7 has a long side portion and a short side portion with respect to the rotation surface. In this case, the restricting portion 8 is formed in a recessed state between the large diameter portions of the restricting portion forming member 8A that is coaxial with the undulating turning shaft portion 9, but is locked at a position where it should be able to rotate and rotate. When the portion 7 is arranged, a concave shape having a sufficient diameter on all four sides is allowed to allow this, and the rotation direction of the undulation rotation shaft portion 9 is allowed to allow the undulation rotation in a predetermined rotation rotation direction. The recess portion that allows the revolving movement (undulation rotation) of the locking portion 7 to the recess portion, the recess space and the recess space are formed so as to be connected to each other. In order to prevent rotation, the shape is wider than the short side but narrower than the long side.

  As another example, the locking portion 7 has a concave shape with the lower surface escaping the undulating rotation shaft portion 9 so that the undulating rotation shaft portion 9 can be moved and moved in the undulation rotation direction during the undulation rotation. In this case, the rotation of the rotation is obstructed and the rotation of the rotation is prevented. However, in a position where the rotation is sufficiently raised and lowered, it is possible to design various configurations such that the rotation of the rotation is not blocked by the wide recesses on all sides. is there.

  That is, for example, until the overlapping portion 4 is swung up and down 90 degrees, the overlapping portion 4 cannot rotate due to the engaging portion 7 hitting the restricting portion 8 and cannot rotate, and for example, the main body portion 2 and the overlapping portion 4 are overlapped. At a position where there is no twist (0 degree, 180 degree automatic rotation position), the position is rotated up and down within the restricting portion 8 and does not interfere with the restricting portion 8, but also, for example, a position where the 90 degree overlapping portion 4 is rotated and rotated. Then, it is configured such that the locking portion 7 completely contacts the restricting portion 8 and cannot be closed and rotated beyond the substantially raised position (the rotation position where the main body portion 2 and the overlapping portion 4 are substantially perpendicular).

  More specifically, in this embodiment, in the open state in which the positioning is locked by the cam engagement by the opening / closing rotation hinge part HA (and the rotation position in the open state until reaching the substantially raised position), The stop portion 7 can freely rotate 180 degrees forward and reverse without interfering with the restricting portion 8, and the direction of the locking portion 7 undulates when closing and turning from the open state where the cam lock is performed. In the open state, when the overlapped portion 4 is rotated and rotated, the latching portion 7 interferes with the restricting portion 8 and the above-mentioned open rotation position or more Therefore, the overlapping portion 4 is configured so as not to be closed and rotated when it cannot be closed and rotated.

  Accordingly, the rotation of the closed portion in the twisted state is also prevented, and the rotation of the rotation in the twisted direction in the middle of the closed rotation in the correct direction is also prevented. It is configured so that it can be prevented from striking against the portion 2, and the operation portion 1 on the main body portion 2 can be prevented from being pushed by mistake.

  Further, by chamfering the end portion of the restricting portion 8 to a predetermined shape, when the overlapping portion 4 is closed and rotated at a slightly twisted rotation position, the overlapping portion 4 is automatically aligned along the upper end shape of the restricting portion 8. Can be configured to rotate and rotate in the correct orientation and close the polymerization, and as described above, it can be rotated to any open range, and if it is twisted, it can be blocked and rotated beyond what position. Moreover, it will be possible to make fine adjustment settings.

  Therefore, it is possible to easily prevent the end corner of the overlapping portion 4 from contacting the main body 2 as described above by closing and rotating the overlapping portion 4 even though the overlapping portion 4 is in the twisted position. In addition, in the present embodiment, it is possible to easily realize the rotation restriction as described above by setting the shapes of the locking portion 7 and the restriction portion 8, so that this rotation restriction can be easily made into various variations. It can be designed.

  Further, in this embodiment, as described above, the second member 4 rotates and rotates together with the second member 4 at the end protruding to the inside of the shaft attachment portion 5 of the rotation rotation hinge HA, and the first rotation A locking portion 7 is provided to turn up and down by the up-and-down rotation of the two members 4. A restricting portion 8 that restricts the rotation and up-and-down rotation of the locking portion 7 is provided inside the shaft mounting portion 10. The shaft mounting portion 10 is provided on the undulating rotation shaft portion 9 of the opening / closing rotation hinge portion HA provided so as to be rotatable. The restricting portion 8 has an outer surface of the rotation shaft portion 16 formed in a predetermined shape. The undulation rotation shaft portion 9 is connected to a restriction portion forming member 8A having an outer surface formed in a predetermined shape without being integrally formed with the undulation rotation shaft portion 9, and the restriction is applied to the undulation rotation portion 9 by another part. The portion 8 is provided.

That is, the shaft mounting portion 10 is a U-shaped member, and both leg portions 10A of the U-shaped member are rotatably provided on the undulating rotation shaft portion 9, and the rotation rotation shaft portion 16 is provided on the erection portion 10B. Is provided so as to be able to rotate and rotate, the restricting portion forming member 8A is disposed between the leg portions 10A on the inner side of the U-shaped shaft mounting portion 10, and the undulating rotation shaft portion 9 is connected to the U-shaped shaft. The shaft mounting portion 10 is rotatably provided in the undulating rotation shaft portion 9 through the shaft support holes 10C of the both leg portions 10A of the mounting portion 10, and the undulating rotation shaft portion 9 is attached to the shaft of the restricting portion forming member 8A. The restricting portion 8 is provided on the undulating rotation shaft portion 9 between the leg portions 10A through the connecting hole 8B.

Therefore, unlike the configuration so far , the undulation rotation shaft portion 9 is inserted between the both leg portions 10A of the U-shaped shaft attachment portion 10 provided with the rotation rotation shaft portion 16 of the rotation rotation hinge portion HB. Although the shaft mounting portion 10 is configured to be rotatable with respect to the rotating shaft portion 9, the undulating rotation shaft portion 9 and the regulating portion 8 disposed between the both leg portions 10 </ b > A of the shaft mounting portion 10 are separate parts. In other words, a predetermined portion of the undulating rotation shaft portion 9 is not integrally formed or processed into a predetermined shape, and is separated from the undulating rotation shaft portion 9 as a separate part between the leg portions 10A of the shaft mounting portion 10. relief by concatenating undulating pivot shaft 9 to the restricting portion forming member 8A which the undulations rotating shaft 9 to the regulating member 8A provided with penetrations linked separately from the relief rotation shaft 9 by arranging due to a structure in which a restricting portion 8 to the rotary shaft portion 9, undulations pivot shaft which is inserted between the legs 10A of the shaft mounting portion 10 and the restricting portion forming member 8A 9 thin, restricting portion forming member 8A can be designed larger. As a result, since the undulating rotation shaft portion 9 is thin, it is inserted into the leg portion 10A (the shaft support hole 10C) of the shaft mounting portion 10 as before, and the shaft mounting portion 10 is provided rotatably on the undulating rotation shaft portion 9. However, even if the outer diameter of the restricting portion forming member 8A is increased, it is not necessary to pass the restricting portion forming member 8A through the leg portion 10A (the shaft support hole 10C). A large restricting portion forming member 8A (a restricting portion forming member 8A capable of forming a deep recess) can be disposed inside the shaft attaching portion 10 without increasing the shaft attaching portion 10 and the undulating rotation shaft portion. 9 and the restricting portion forming member 8A are connected, the restricting portion 8 can be provided on the undulating rotation shaft portion 9 as before.

  Therefore, it is possible to form a sufficiently deep concave portion in the restricting portion forming member 8A with a configuration that can be made compact as in the past, and a contact surface (step surface) that prevents the locking portion 7 from rotating can be formed sufficiently high. The revolutionary hinge device and the electronic device using the hinge device that can reliably prevent the rotation of the portion 7 and have excellent durability can be easily realized by this simple improvement.

  In the present embodiment, the undulation rotation shaft portion 9 of the opening / closing rotation hinge portion HA or the member provided in the axial direction of the undulation rotation shaft portion 9, the circuit portion provided in the first member 2, and the second A wiring winding part 22 for winding a wiring 21 that electrically connects a circuit part provided in the member 4 is provided.

  That is, a part of the undulation rotation shaft portion 9 of the opening / closing rotation hinge portion HA or a portion provided in this axial direction, on a side portion of the restriction portion 8, and on the outer periphery of the winding space of the wiring 21 The wiring winding part 22 is provided so as to form a part where the resistance is secured.

  Specifically, the undulating rotation shaft portion 9 extended to the opposite side to the side where the cam engaging lock mechanism (cylindrical case 12) of the base portion 10 is provided is engaged with the first member 2, but this is not the case. The side is simply configured to extend the undulating rotation shaft portion 9, that is, the extended shaft portion is not provided with a cam engagement mechanism, and this extended portion (a part of the undulating rotation shaft portion 9) is wound by wiring. It is referred to as round part 22.

  In other words, in this embodiment, the wire winding portion 22 is provided on one side of the undulating rotation shaft portion 9 as a winding portion for fixing and holding the wiring 21, specifically, the flexible wiring 21 several times. . On the other hand, a wire 21 that electrically connects the circuit portion provided in the first member 2 and the circuit portion provided in the second member 4 is also wound around the rotation rotation shaft portion 16 of the rotation rotation hinge portion HB. A wiring winding part 22 is provided.

  That is, the winding ring 23 is fitted on the rotation rotation shaft portion 16, and this is also used as the wire winding portion 22. Therefore, the present invention can be easily wired without hindering such an opening / closing operation and a regulating operation.

The present invention is not limited to the first embodiment, and the specific configuration of each component can be designed as appropriate.

FIG. 3 is an explanatory perspective view illustrating a usage state of the first embodiment. It is a perspective view of the hinge apparatus of the first embodiment. It is a disassembled perspective view of the hinge apparatus of the present Example 1. FIG. It is explanatory drawing of the conventional hinge apparatus control part. It is explanatory drawing of the hinge apparatus control part of the present Example 1. FIG. It is explanatory drawing of the rolling rotation shaft part of this Example 1, a control part, and a shaft attachment part. It is explanatory sectional drawing of the hinge apparatus of the present Example 1. FIG. It is a description perspective view of the conventional hinge apparatus. It is a description exploded perspective view of the conventional hinge apparatus. It is a description perspective view which shows the movement of the raising / lowering rotation and rotation rotation of the conventional hinge apparatus.

Explanation of symbols

1 Operation part 2 First member (main part)
3 Display part 4 Second member (Polymerization part)
DESCRIPTION OF SYMBOLS 5 Attachment part 6 Attachment part 7 Locking part 8 Restriction part 8A Restriction part formation member 8B Shaft connection hole 9 Unfolding rotation shaft part
10 Shaft mounting
10A leg
10B erection part
10C shaft support hole
11 spring
13 Cam part
14 Cam engagement part
16 Rotating rotation shaft part H Hinge device HA Opening and closing rotation hinge device HB Rotation rotation hinge part S Rotation restriction mechanism

Claims (3)

The first member and the second member can be pivoted up and down so that the first member and the second member can be rotated from the closed state where the first member and the second member are overlapped to be in an open state where the overlapping surface is exposed, and the first member and the second member can be rotated relative to the first member. A hinge device for rotating a second member that rotates relative to each other so that the overlapping and exposed surfaces of the second member can be switched in a reversible manner. One rotation portion of the hinge portion is connected to the first member, and the other attachment portion is connected to the second member via a rotation rotation hinge portion having a rotation rotation shaft portion, and the rotation rotation is performed. A hinge portion is provided so as to be able to swing up and down by the opening and closing rotation hinge portion, and the opening and closing rotation hinge portion and the rotation rotation hinge portion are in a closed state in which the second member is overlapped with the first member. Open at a predetermined rotation position opened by a predetermined angle or opened at a predetermined angle or more. In the state, the second member can be rotated and rotated at least 180 degrees with respect to the first member, and the second member is moved to the first member at a rotation position where the second member is not opened and rotated more than the predetermined angle. A rotation restricting mechanism is provided for the member so that the second member and the first member are not allowed to rotate from a rotation position where the second member and the first member can be overlapped, or the rotation cannot be rotated more than a predetermined angle. The rotation rotation shaft portion is rotatably provided on a shaft mounting portion of the rotation rotation hinge portion provided rotatably with respect to the undulation rotation shaft portion of the dynamic hinge portion, and the rotation rotation hinge portion. A locking portion that rotates and rotates together with the rotation of the second member at the end protruding to the inside of the shaft mounting portion of the rotation rotation shaft portion of the rotation rotation of the second member. Regulation that regulates rotation and undulation rotation of this locking part The shaft mounting portion is provided on the undulating rotation shaft portion of the opening / closing rotation hinge portion that is rotatably provided, and the restricting portion has an outer surface of the undulating rotation shaft portion. It is not configured to be formed in a predetermined shape and integrally formed on the undulating rotation shaft portion, but the undulating rotation shaft portion is connected to a regulating portion forming member having an outer surface portion formed in a predetermined shape, and the undulation rotation portion is formed by another part. In the configuration in which the restricting portion is provided, the first member and the second member are allowed to overlap with each other at the rotation rotation position without twisting, and the second member is allowed to undulate and rotate, and from the closed state in which the two members overlap each other. The second member is allowed to rotate at least 180 degrees with respect to the first member in a predetermined rotational position opened by a predetermined angle or in an open state opened by a predetermined angle or more. In the rotation position where the rotation is not opened more than a predetermined angle, The second member with respect to the first member so that the second member and the first member are not allowed to rotate from a rotation rotation position where the second member and the first member can be overlapped, or the rotation rotation is not possible beyond a predetermined angle. The rotation restricting mechanism is configured by setting the outer surface shape of the restricting portion forming member of the restricting portion with respect to the locking portion, the shaft mounting portion is a U-shaped member, and both leg portions of the U-shaped member are the undulations Cam portions that are provided rotatably on the rotation shaft portion, and that the rotation rotation shaft portion is provided on the installation portion so as to be capable of rotation rotation. The cam portions engage with each other by urging by a spring around the undulation rotation shaft portion. And the cam portion of the cam engagement portion is slidably inserted into the undulating rotation shaft portion so as to be slidable, and the cam engagement portion is provided on the leg portion of the U-shaped shaft attachment portion, The restricting portion forming member is disposed between the inner leg portions of the U-shaped shaft mounting portion, and the restricting portion A shaft connecting hole for connecting the undulating rotation shaft portion through the undulating rotation shaft portion is provided in the forming member, and a shaft support hole for rotatably connecting the undulating rotation shaft portion to the leg portion of the shaft mounting portion. provided, wherein a relief rotary shaft portion together with the U-shaped undulations rotation shaft through the shaft supporting hole of each of the legs of the shaft mounting portion providing the shaft mounting portion rotatably, the legs through connected via the shaft coupling hole of the restricting portion forming member undulations rotation shaft is disposed between the legs which is inserted between the undulating pivoting by the restricting portion between the legs A hinge device characterized in that the shaft portion is provided. When the second member is rotated and rotated at a twist position in the middle of 180 ° reversal rotation in a rotation position rotated by a predetermined angle from the closed state or an open state rotated by a predetermined angle or more, at least no mounting according to claim 1 Symbol said end of the second member, characterized in that the above angle leading to contact with the upper surface of the first member was composed of the turn restricting mechanism so as not to close rotated Hinge device. The main body part provided with the operation part and the superposition part provided with the display part can be rotated so that the superposition part can be relatively swung up and down from the superposed state and the superposition part can be turned upside down as much as possible. As described above, it has a hinge device that connects the main body portion and the overlapping portion so that the main body portion and the overlapping portion can freely rotate and rotate, and the hinge device has the main body portion as the first member or the second member, An electronic apparatus using a hinge device, wherein the hinge device according to any one of claims 1 and 2 is used in which the overlapping portion is the second member or the first member.

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