JP2005155679A - Rotary hinge device for movable communication equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary hinge device for movable communication equipment capable of simplifying a configuration of the hinge device, improving assembly property, maintenance property, and workability, and obtaining soft and stable operation sense by rotation of a cover. <P>SOLUTION: In this rotary hinge device for the movable communication equipment for rotating the cover of the movable communication equipment opened for a main body in the main body, the hinge device is composed of a base member 110 which is connected with a cover hinge device opening and closing the cover 20 for the main body 10 to rotate in the main body and in which a mounting part 111 is integrally formed on one side opposing to the cover 20, a collar 120 connected with the outer periphery in the mounting part of the base member to prevent its rotation, a bushing member 130 which is inserted into the inner periphery of the collar and whose one end part is connected with the mounting part to prevent its rotation, a shaft 140 which is rotatably inserted into the bushing member and whose end part passes through the mounting part of the base member so that the inner periphery of the bushing member and friction force act, and a rotary member 190 fixed to the other end part of the shaft and provided and fixed in the cover. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rotary hinge device of a mobile communication device such as a mobile phone.

  In general, mobile phones, PCS (Personal Communications Services Phone), mobile phones, personal mobile phones, wireless communication terminals (WAP), wireless application protocol (WAP), personal digital assistance (PDA) devices, Mobile communication devices such as IMT2000 (International Mobile Telecommunications 2000) devices carry out voice calls, voice and video calls with other parties at the same time while being carried by individuals, exchange information such as text messages, connect the Internet, and e-mail It is a convenient communication tool that is always in close contact with daily life.

  Since such a mobile communication device is always carried while being used in daily life, it should be developed into a form that is easy to carry but can be used for various purposes. For this reason, consumer demands are satisfied in a wide variety of forms, such as small devices, lip-type devices, holder-type devices, and LCD devices that can be placed in shirt pockets.

  Recently, a mobile communication device called a single camera phone (hereinafter referred to as “device”) with a digital camera integrated therein has been developed and popularized recently due to various consumer demands. Such a device is generally a holder-type device, and a camera is integrally provided on the entire surface of the cover.

  A device equipped with a camera in this way has a wireless communication function for wireless phone calls and Internet communication, and a digital image that can be edited, transferred, and deleted as needed after the subject is captured and image data is stored. It has all the functions.

  Furthermore, the cover of the device having such a camera is provided so as to be rotatable in a direction perpendicular to the direction of the hinge axis connecting the main body and the cover. Accordingly, two or more cover hinge devices are applied to the device. A hinge device for opening and closing the cover from the main body and a hinge device for rotating the cover in a direction perpendicular to the hinge axis direction are used. In the latter case, it is generally referred to as a rotary hinge module.

  However, the conventional rotary hinge device is configured like the existing cover hinge device, and the assembly of the rotary hinge device for maintenance is reduced due to the use of a separate additional fixing means, and the cam profile. However, it is unnecessarily formed as in the existing rotary hinge device, and there is a problem that manufacturing and productivity are lowered.

  The present invention has been made paying attention to the above circumstances, and the object thereof is to simplify the structure of the hinge device to improve the assemblability, maintainability, and workability, and to withstand repeated rotation of the cover. It is an object of the present invention to provide a rotary hinge device for a mobile communication device capable of ensuring product reliability.

  In order to achieve the above object, the present invention provides a rotary hinge device for a mobile communication device in which a cover of a mobile communication device that is open to the main body is rotated by the main body. The hinge device covers the main body. It is coupled to a cover hinge device that opens and closes, and is rotatable to the main body, and a base member integrally formed with a mounting portion on one side facing the cover, and a non-rotatably coupled outer periphery of the mounting portion of the base member A collar that is inserted into the inner periphery of the collar, and one end of which is non-rotatably coupled to the mounting portion, and the end of which is rotatably inserted into the bushing member. And a shaft provided so that frictional force can act on the inner periphery of the bushing member, and is fixed to the other end of the shaft, and the cover Characterized in that it consists of a rotary member fixed is furnished to.

  According to the rotary hinge device of the mobile communication device of the present invention, the structure of the hinge device is simplified, the assembling property, the maintainability and the workability are improved, and the soft and stable operation feeling due to the rotation of the cover is provided to the user. It can withstand repeated rotations of the cover and has the effect of ensuring the reliability of the product.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 5 show a rotary hinge device of a mobile communication device. As shown in FIG. 1, a mobile communication device (hereinafter referred to as device) is provided with a main body 10 and a cover 20 that can be opened and closed by a cover hinge device 11 with respect to the main body 10. A hinge device 100 is provided at the top of the main body 10 so that the opened cover 20 can be rotated on the main body 10 in the direction of arrow a.

  As shown in FIGS. 2 and 3, the hinge device 100 is coupled to a cover hinge device 11 that opens and closes the cover 20 at both ends thereof. The base member 110 of the hinge device 100 is rotatably provided on the main body 10 and is coupled to the cover hinge device 11 that opens and closes the cover 20 through a hinge groove 115 formed at an end portion thereof. A mounting portion 111 is integrally formed on one side of the base member 110 facing the cover 20. A collar 120 that is non-rotatably coupled is provided on the outer periphery of the mounting portion 111 of the base member 110. A cylindrical bushing member 130 that is non-rotatably coupled to the mounting portion 111 is inserted into the inner periphery of the collar 110, and is rotatably inserted into the bushing member 130, and an end portion thereof penetrates the mounting portion 111 of the base member 110. Thus, a shaft 140 is provided so that a frictional force can act on the inner periphery of the bushing member 130.

  Fixing at the other end of the shaft 140, a rotary member 190 that is built and fixed in the cover 20, and a shaft 120 between the rotary member 190 and the bushing member 130 are rotatably inserted into the collar 120 while being non-rotatable. A fixed cam 160 is provided having a follow-up protrusion 162 that is joined and protrudes at one side by bending slowly.

  The rotary member 190 is rotatably inserted into the shaft 140 so as to be able to face the fixed cam 160 while being inserted so as to be non-rotatable and capable of sliding. A rotating cam 170 having a number of engagement grooves 171 is provided on one surface of the fixed cam 160 facing the following protrusion 162 so that the following protrusion 162 can be engaged therewith.

  Between the rotary cam 170 and the rotary member 190, there is provided elastic means 180 comprising a compression spring that elastically supports the rotary cam 170 on the fixed cam 160 side and closely contacts the fixed cam 160. That is, the hinge device 100 includes a base member 110, a collar 120, a bushing member 130, a shaft 140, a control cam 150, a fixed cam 160, a rotating cam 170, an elastic means 180, and a rotary member 190.

  The base member 110 is rotatably provided on the main body 10 and is coupled to a cover hinge device 11 that opens and closes the cover 20 through a hinge groove 115 formed at one end thereof. A mounting portion 111 is integrally formed on one surface perpendicular to the hinge groove 115, that is, on the upper surface facing the cover 20. The mounting portion 111 is formed with a polygonal mounting groove 112 and a through hole 113 having a smaller diameter than the mounting groove 112. A stopper 114 corresponding to the mounting portion 111 is formed on one side of the base member 110 in contact with the through hole 113.

  Since the case of the hinge device 100 is illustrated, “116” indicates a connection between the base member 110 and the mounting portion 111. The collar 120 is non-rotatably coupled to the outer periphery of the mounting portion 111 of the base member 110. On the other hand, the collar 120 is opposed to each other in the lower step portion, and the lower step portions 122 and 121 are separately formed. The lower step portion 121 holds the mounting portion 116 while sandwiching the portion 116 connecting the base member 110 and the mounting portion 111. 111, the upper stepped portion 122 sandwiches the engaging portion 160 of the fixed cam 160 and is non-rotatably coupled.

  As shown in FIG. 5, the bushing member 130 is inserted into the inner periphery of the collar 120, and one end thereof is non-rotatably coupled to the mounting groove 112 of the mounting portion 111. One end of the bushing member 130 is formed and joined to a polygonal fixing portion 131 corresponding to the mounting groove 112, and the inner periphery of this member has a taper 132 so that the inner diameter gradually widens from the fixing portion 131 to one end portion side. Is formed. The shaft 140 is rotatably inserted into the bushing member 130, and a step portion thereof sequentially passes through the mounting groove 112 and the through hole 113 of the base member 110.

  The coupling portions 141 and 142 at both ends of the shaft 140 are rotatably inserted into the through hole 113 of the base member 110, and thereafter formed into shapes corresponding to each other in the through hole 192 of the rotary member 190 and cannot rotate. It is connected to the state. A taper 143 is formed on the outer periphery of the shaft 140 so as to spread from one side to the center side, and the taper 143 is inserted so as to be in close contact with the taper 132 in the bushing member 130. The rotation of the shaft 140 is prevented by the tapers 132 and 143, and when the shaft 140 is rotated, the shaft 140 can be easily rotated by the close contact with the bushing member 130.

  The control cam 150 is configured to limit the rotation amount of the rotary member 190 installed on the shaft 140, that is, the cover 20 within 270 degrees. In other words, the control cam 150 is coupled to the shaft 140 and the coupling portion 141 that pass through the through hole 113 of the base member 110 in a non-rotatable state, and the outer periphery thereof is engaged with the stopper 114 of the base member 110. A portion 151 is formed to engage the stopper 114. At this time, the stopper 114 and the engaging portion 151 are designed such that the design conditions such as the size, length, and width limit the rotary member 190, that is, the rotation amount of the cover 20 within 270 degrees. Correctly, the cover 20 is designed so that it can rotate 180 degrees in one direction and -90 degrees in the other direction.

  The fixed cam 160 is non-rotatably coupled to the collar 120 while being rotatably inserted on the shaft 140 penetrating the bushing member 130. That is, a plurality of engaging portions 151 are formed on one surface of the fixed cam 160 facing the bushing member 130 so as to protrude in a circular shape with a diameter corresponding to the bushing member 130, and are sandwiched by the upper stepped portion 122 of the bushing member 130. Cannot rotate.

  As shown in FIG. 4, a follower protrusion 162 is formed on the other surface of the fixed cam 160 so as to protrude slowly. The follow-up protrusion 162 protrudes from the fixed cam 160 almost vertically and is inclined upward. The inclined surface 162b is inclined upward by an angle of about 45 degrees from the vertical inclined surface 162a. The land surface 162a is formed to be flat and extended so as to connect the inclined surfaces. On the other hand, a portion connecting the land surface 162a, the inclined surface 162b, and the vertical inclined surface 162c is formed with a smooth gentle inclination.

  The rotating cam 170 is rotatably inserted into the shaft 140 so as to face the fixed cam 160, and is inserted into the rotary member 190 in a state where sliding is possible so as not to rotate. On the other hand, a rotary member in which a large number of engagement grooves 171 having a shape corresponding to the following protrusion 162 is rotated at a distance of 90 degrees so that the following protrusion 162 of the fixed cam 160 is sandwiched on one surface of the rotating cam 170. 190 and the cover 20 are stopped from the main body 10 at −90 degrees, 90 degrees, and 180 degrees, and a soft and stable operation feeling is provided to the user. At this time, the configuration of the engagement groove 171 can be variously set so that the rotation of the cover 20 can be stopped at various angles.

  The engagement groove 171 corresponding to the follow-up protrusion 162 includes a vertical inclined surface 171c inclined vertically upward from the flat cam surface 170a corresponding to the vertical inclined surface 162c of the follow-up protrusion 162, and the follow-up protrusion 162. Corresponding to the inclined surface 162b, the vertical inclined surface 171c, the inclined surface 171b inclined upward at an angle of about 45 degrees, and the both inclined surfaces are connected to correspond to the land surface 162a of the following projection 162. It is formed on a flat land surface 171a. A portion connecting the land surface 171a, the inclined surface 171b, and the vertical inclined surface 171c is also formed with a smooth gentle inclination similarly to the follower protrusion 162.

  Accordingly, as long as there is no external force due to the shape of the tracking protrusion 162 and the engagement groove 171, that is, the land surfaces 162 a and 171 a, the inclined surfaces 162 b and 171 b, the vertical inclined surfaces 162 c and 171 c, and the gentle inclination of the portion connecting them. The protrusion 162 and the engagement groove 171 are coupled with a firm coupling force. When the external force, that is, the rotational force is generated, the follower protrusion 162 is lightly detached and separated from the engagement groove 171, thereby providing a soft and stable operation feeling of the cover 20 so that the user has a sense of reality.

  The rotary member 190 is interlocked like the cover 20 by being fixed to the other end of the shaft 140 and being installed and fixed in the cover 20. That is, the rotary member 190 is provided with a mounting groove 191 having a shape corresponding to the rotating cam 170 so that the rotating cam 170 can be inserted while being slidable. A through-hole having a shape corresponding to the coupling portion 142 of the shaft 140 is drilled in the mounting groove 191 so as to penetrate the rotary member 190.

  Next, the operation of the rotary hinge device of the mobile communication device configured as described above will be described. Since the cover 20 by the hinge device 100 is rotated 180 degrees in one direction and is rotated by -90 degrees in the other direction, in this description, the rotation operation of 180 degrees will be described as an example.

  First, when the cover 20 is opened from the main body 10 of the device 2, the hinge device 100 connected to the cover hinge device rotates in the opening direction of the cover 20 around the base member 110. Thereafter, when the cover 20 is bent and rotated to a desired angle, the rotary member 190 installed on the cover 20 is rotated, and the rotary member 190 also rotates, and a rotational force acts on the rotary cam 170 and the shaft 140. .

  At this time, the rotating cam 170 is inserted into the engaging groove 171 of the rotating cam 170 and the frictional force, which is a reaction force against the rotating force, acts as a resistance by the follow-up protrusion 162 of the fixed cam 160 that is caught. is there. When a rotational force greater than this resistance force is applied to the cover 20, the rotating cam 170 is slid into the rotary member 190 over the elastic force of the elastic means 180 made of a compression spring. Accordingly, the rotating cam 170 is released from the following protrusion 162 of the fixed cam 160 and released.

  Then, as described above, the rotating cam 170 released from the follow-up protrusion 162 of the fixed cam 160 and released is covered by the cover 20 when the vertical inclined surface 171c of the engagement groove 171 gets over the vertical inclined surface 162c of the follow-up protrusion 162. The rotation cam 170 at this time compresses the elastic means 180 into the rotary member 190 and enters the sliding state. Thereafter, when the vertical inclined surface 171c of the engaging groove 171 reaches the inclined surface 162b of the following projection 162, the rotation and sliding movement of the fixed cam 160 are accelerated by the external force and the inclination, and the land surface 162a is reached. It will be in a state of rotating only with pure external force. At this time, the elastic means 180 is compressed to the maximum, the moving amount of the rotating cam 170 is also maximized, and the elastic means 180 rotates until other adjacent engaging grooves are gradually pinched.

  On the other hand, as described above, when the other engaging groove 171 of the rotating cam 170 is sandwiched between the following protrusions 162 of the fixed cam 160, the cover 20 is rotated at an angle of 90 degrees from the main body 10 as shown in FIG. become. Further, when the cover 20 is rotated and another engagement groove is sandwiched between the tracking protrusions 162 after the 135 degree point in FIG. 7, the cover 20 is rotated at an angle of 180 degrees from the main body 10 as shown in FIG. 8. It will be in a rotated state.

  At this time, when the cover 20 can be rotated 180 degrees from the main body 10, the engaging portion 151 of the control cam 150 coupled to the one-stage coupling portion 141 of the shaft 140 rotates like the shaft 140 while the stopper 114 of the base member 110. The cover 20 is prevented from excessive rotation. This prevents excessive rotation of the cover 20 in the same operation even when the cover 20 rotates in the opposite direction of −90 degrees.

  Further, the shaft 140 rotated together with the rotary member 190 as described above prevents arbitrary rotation of the cover 20 by the frictional force generated through the tapers 132 and 143 in close contact with the bushing member 130. Therefore, the hinge device 100 can provide the user with a soft and stable operation feeling due to the rotation of the cover 20, and the structure is simplified to improve the assemblability, maintainability and workability. become.

1 is an exploded perspective view of a mobile communication device to which a rotary hinge device is applied according to an embodiment of the present invention. The disassembled perspective view of the rotary hinge apparatus of the embodiment. The disassembled perspective view of the half cross section of the rotary hinge apparatus of the embodiment. 2 shows a coupling state of the tracking protrusion and the groove of the embodiment, (a) is a sectional view illustrating the coupling state of the tracking protrusion and the groove, and (b) illustrates a state where the groove is detached from the tracking protrusion. Sectional drawing, (c) is a sectional view illustrating a state in which the groove is completely detached from the tracking protrusion and rotates. The longitudinal front view of the initial state before the rotation which the cover opened from the main body of the mobile communication apparatus of the embodiment. The longitudinal cross-sectional front view of the state which the cover of the mobile communication apparatus of the embodiment rotated 90 degree | times from the main body. The longitudinal cross-sectional front view of the state which the cover of the mobile communication apparatus of the embodiment rotated 135 degree | times from the main body. The longitudinal cross-sectional front view of the state which the cover of the mobile communication apparatus of the embodiment rotated 180 degree | times from the main body. The longitudinal cross-sectional front view of the state which the cover of the mobile communication apparatus of the embodiment rotated -90 degree | times from the main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Main body, 20 ... Cover, 110 ... Base member, 111 ... Mounting part, 120 ... Collar, 130 ... Bushing member, 140 ... Shaft, 160 ... Fixed cam, 162 ... Tracking protrusion, 170 ... Rotating cam, 171 ... Engagement Groove, 180 ... elastic means, 190 ... rotary member,

Claims (9)

In the rotary hinge device of the mobile communication device for rotating the cover of the mobile communication device opened to the main body on the main body,
The hinge device is coupled to a cover hinge device that opens and closes the cover (20) relative to the main body (10) and is rotatable with respect to the main body, and a mounting portion (111) is integrally formed on one side facing the cover. A formed base member (110);
A collar (120) non-rotatably coupled to the outer periphery of the mounting portion of the base member;
A bushing member (130) which is inserted into the inner periphery of the collar and whose one end is non-rotatably coupled to the mounting portion;
A shaft (140) that is rotatably inserted into the bushing member, the end of which penetrates the mounting portion of the base member, and the inner periphery of the bushing member and a frictional force can act.
A rotary member (190) fixed to the other end of the shaft and fixed to the cover;
A rotary hinge device for a mobile communication device, characterized by comprising: The fixed cam (160) according to claim 1, wherein said fixed cam (160) is inserted into said shaft (140) rotatably and is non-rotatably coupled to said collar (120) and has a follow-up protrusion (162) formed on one side thereof. The rotary member (190) is rotatably inserted into the shaft so as to be able to face the fixed cam while being slidably inserted while being slidable. Rotating cam (170) having a large number of engaging grooves (171) so as to be sandwiched between the rotating cam and rotary member (190). The rotating cam is elastically supported on the fixed cam side and fixed. A rotary hinge device for a mobile communication device, characterized by comprising elastic means (180) for tightly contacting a cam. 3. The follow-up projection (162) of the fixed cam and the engaging groove of the rotating cam have shapes corresponding to each other, but the follow-up projection is followed and inclined from the fixed cam (160). The engagement groove includes a vertical inclined surface (162c), an inclined surface (162b) inclined from the vertical inclined surface, and a land surface (162a) extended from the inclined surface and made from a plane. A vertical inclined surface (171c) inclined from a flat cam surface (170a) corresponding to the vertical inclined surface (162c) of the following protrusion, and a vertical inclined surface corresponding to the inclined surface (162b) of the following protrusion ( 171c) and an inclined surface (171b) inclined from the inclined surface and a land surface (171a) made of a plane corresponding to the land surface (162a) of the tracking protrusion. Movement characterized by Rotary hinge device of telecommunications equipment. The land surface (162a) (171a), the inclined surface (162b) (171b), the vertical inclined surface (162c) (171c) of the follow-up protrusion (162) and the engaging groove (171) according to claim 3. A rotary hinge device for a mobile communication device, characterized in that the connecting portion is formed with a gentle slope. 5. The engagement protrusion according to claim 1, wherein the stepped portion of the shaft (140) passing through the mounting portion (111) of the base member (110) is followed by the outer periphery thereof. A control cam (150) having a portion (151) is non-rotatably coupled, and the engagement protrusion is sandwiched between one side of the base member corresponding to the engagement protrusion of the control cam, and the shaft A rotary hinge device for a mobile communication device, wherein a stopper (114) for stopping the rotation of the mobile communication device is formed. 6. The stopper (114) of the base member (110) and the engaging protrusion (151) of the control cam (150) according to claim 5, wherein the cover (20) is rotated 180 degrees in one direction, Is a rotary hinge device for mobile communication equipment, characterized in that it can be rotated by -90 degrees. 5. The collar (120) according to claim 1, wherein the collar (120) that is non-rotatably coupled to the outer periphery of the mounting portion (111) of the base member (110) is formed on the stepped portion that faces the base member. A rotary hinge device for a mobile communication device, characterized in that a stepped portion (121) sandwiched and joined by a portion (116) connected to the outer periphery of the mounting portion is stepped. The collar (120) to which the fixed cam (160) is non-rotatably coupled is formed with a stepped portion (122) having a step at a stepped portion facing the fixed cam. A rotary hinge device for a mobile communication device, wherein the corresponding fixed cam is formed with an engaging protrusion (161) that is sandwiched and joined by a stepped portion. The inner periphery of the bushing member (130) according to any one of claims 1 to 4, wherein the inner periphery of the bushing member (130) is fixedly coupled to the mounting groove (112) of the mounting portion (111) in a non-rotatable manner. A taper (132) is formed so as to gradually spread toward one end, and the outer periphery of the shaft (140) is tapered (143) so as to gradually spread from one side to the center. A rotary hinge device of a mobile communication device, wherein the taper (132) in the bushing member (130) is inserted so as to be in close contact.

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