Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.
1 to 3, the portable terminal 100 including the hinge device 200 (shown in FIG. 4) according to an exemplary embodiment of the present invention may include a first housing 101 and a second housing ( 102, the second housing 102 may rotate about each of the first and second hinge axes A1 and A2 extending perpendicular to each other.
In this case, the second housing 102 may select any hinge axis among the first and second hinge axes A1 and A2 and rotate it about the hinge housing only when the second housing 102 is folded to the first housing 101. In a state in which the first and second hinge axes A1 and A2 rotate about one of the first and second hinge shafts 101, the first and second hinge axes A1 and A2 do not rotate. This will be described in more detail through the configuration of the hinge device 200.
The first housing 101 is a main body accommodating a main board, a battery pack, and the like, and a keypad 111 and a transmitter 113 are installed on one surface of the second housing 102. It is opened and closed by). A first hinge arm 115 extending in the direction of the first hinge axis A1 is formed at an upper end of the first housing 101 to be coupled to the second housing 102. The first hinge arm 115 is formed only at a portion of the width of the first housing 101, and the remaining portion of the width of the first housing 101 is the second hinge arm 125 below. It will provide space for installation.
The second housing 102 is provided with a display device 121 and a receiver 123 on one surface thereof, and the second hinge arm 125 is provided at one end thereof. The second hinge arm 125 is coupled with one end thereof facing the one end of the first hinge arm 115, and rotates about the first hinge axis A1. Therefore, when the second hinge arm 125 is rotated, the second housing 102 is rotated about the first hinge axis (A1).
When the second housing 102 is coupled to the second hinge arm 125, the second housing 102 is coupled to the first housing in a rotatable state about the second hinge axis A2. As a result, the second housing 102 rotates about the first hinge axis A1 together with the second hinge arm 125 from the state in which the second housing 102 is folded on the first housing 101, or the second hinge. It rotates about the said 2nd hinge arm 125 about the axis A2.
FIG. 2 illustrates a view in which the second housing 102 is rotated about the first hinge axis A1 to be opened, and FIG. 3 shows that the second housing 102 is the second hinge axis A2. The figure shows the open figure by rotating around the center.
Referring to FIG. 2, it can be seen that the terminal 100 is identical to a general foldable terminal in appearance while the second housing 102 is rotated and opened about the first hinge axis A1. have. Therefore, when the second housing 102 is rotated and opened about the first hinge axis A1, the user can conveniently use a general mobile communication function or a game.
Referring to FIG. 3, in a state in which the second housing 102 is rotated about the second hinge axis A2 and opened, the terminal 100 may provide a long screen in a horizontal direction. It can be seen that it can be placed in a state. Therefore, when the second housing 102 is rotated and opened about the second hinge axis A2, the user may conveniently use a multimedia service such as broadcasting by using the terminal 100. In addition, if the keypad 111 is configured with a qwerty keyboard arrangement such as a general personal computer keyboard, the user can conveniently input various information such as a long mail using the keypad 111.
Hereinafter, a configuration of the hinge device 200 connecting the first and second housings 101 and 102 will be described with reference to FIGS. 4 to 6. As mentioned above, the hinge device 200 provides the first and second hinge axes A1 and A2 extending perpendicular to each other, and the second housing 102 is connected to the hinge device 200 through the hinge device 200. It is coupled to the first housing 101 is rotated about the first or second hinge shaft (A1, A2). The second housing 102 is rotated about the first hinge axis A1 and spreads out above the first housing 101, and is rotated about the second hinge axis A2 to allow the first housing to rotate. It is spread out to one side of 101.
4 to 6, the hinge device 200 is coupled to the hinge base 201 and the hinge base 201 mounted on the first housing 101 to connect the first hinge axis A1. A hinge housing 202 that rotates about the center and a hinge shaft 203 that is mounted to the second housing 102 and coupled to the hinge housing 202 and rotate about the second hinge axis A2. . In addition, a stopper 205 is accommodated in the hinge housing 202 to press the outer circumferential surface of the hinge shaft 203. Accordingly, friction force is generated between the outer circumferential surface of the hinge shaft 203 and the stopper 205 while the hinge shaft 203 rotates about the second hinge axis A2.
An elastic member 299 may be accommodated in the hinge housing 202 to provide an elastic force to the stopper 205. The stopper 205 receives the elastic force of the elastic member 299 to press the outer circumferential surface of the hinge shaft 203 to prevent the hinge shaft 203 from rotating regardless of the user's intention. That is, even if the hinge shaft 203 is stopped at an arbitrary position, the stop state can be stably maintained unless an external force of a predetermined size or more is applied.
The hinge base 201 has a support 211 formed therein and has an opening 213 formed by cutting a portion of an outer circumferential surface thereof. The support part 211 is exposed to the outside through one end of the hinge base 201 and the opening 213. In addition, a first fastening hole 215 formed through the hinge base 201 is formed at a position adjacent to the opening 213. The hinge base 201 is mounted inside the first hinge arm 115 and exposes the support 211 to one end of the first hinge arm 115.
The hinge housing 202 is coupled with its one end facing the one end of the hinge base 201 so as to rotate about the first hinge axis A1. An interior of the hinge housing 202 forms an accommodating space (not shown) open to one end of the hinge housing 202, and an attachment groove 225 is formed on an outer circumferential surface of the hinge housing 202 along the first housing. A flexible printed circuit 208 connecting the circuit devices installed inside the 101 and the circuit devices installed inside the second housing 102 is wired through the attachment groove 225.
First and second hinge holes 221 are formed at the other end of the hinge housing 202, respectively. The first hinge hole 223 is configured to couple the hinge housing 202 to the hinge base 201 and is formed along a direction of the first hinge axis A1 and the second hinge hole 221. Is for coupling the hinge shaft 203 and is formed along the direction of the second hinge axis A2. In detail, the first hinge axis A1 is positioned on the first hinge hole 223, and the second hinge axis A2 is positioned on the second hinge hole 221, respectively.
In order to rotatably couple the hinge housing 202 to the hinge base 201, the hinge device 200 may include a coupling pin 204. The coupling pin 204 is inserted through the first hinge and the first hinge hole 223, one end of which is supported by the hinge housing 202 and the other end is bound to the hinge base 201, thereby the hinge The housing 202 is coupled to the hinge base 201. As a result, the hinge housing 202 is coupled to the hinge base 201 to rotate about the first hinge axis A1 while being supported by the coupling pin 204.
In order to bind and fix the coupling pin 204 to the hinge base 201, a first coupling hole 215 is formed in the hinge base 201, and a second coupling is formed at the other end of the coupling pin 204. The hole 243 is formed. When the other end of the coupling pin 204 is coupled to the hinge base 201, the first and second fastening holes 215 and 243 are aligned in a straight line, and the first and second coupling holes 215 and 243 are aligned in a straight line. 1 The fastening pin 217 is inserted through the fastening hole 215. The fastening pin 217 is inserted through the first fastening hole 215 to bind to the second fastening hole 243, whereby the coupling pin 204 is fastened to the hinge base 201. .
Meanwhile, as shown in FIG. 5, even when the hinge housing 202 is coupled to the hinge base 201, the opening 213 maintains a state in which the support part 211 is exposed. This is to provide a space for wiring the flexible printed circuit 208, which will be described in more detail with reference to FIG.
The hinge shaft 203 extends in the direction of the second hinge axis A2, and one end thereof is coupled to the hinge housing 202 through the second hinge hole 221. The other end of the hinge shaft 203 is formed with a fastening piece 239 extending in the vertical direction of the second hinge axis (A2) to provide a coupling means with the second housing (102). The hinge shaft 203 may be coupled to the second housing 102 by itself, but may be more firmly coupled to the second housing 102 by having the fastening piece 239.
When both the hinge shaft 203 and the coupling pin 204 are coupled to the hinge housing 202, a portion of the outer circumferential surface of the hinge shaft 203 and a portion of the outer circumferential surface of the coupling pin 204 interfere with each other. The hinge shaft 203 and the coupling pin 204 interfere with each other, so that the hinge shaft 203 and the coupling pin 204 are smoothly rotated to smoothly rotate the hinge housing 202 and the hinge shaft 203. Each avoidance groove is formed.
The first avoiding groove 231 formed at one end of the hinge shaft 203 is formed by roundly cutting a portion of the outer peripheral surface of the one end of the hinge shaft 203 and is formed at one end of the coupling pin 204. The second avoidance groove 241 is formed by roundly cutting a portion of the outer peripheral surface of the one end of the coupling pin 204.
The first and second avoidance grooves 231 and 241 face each other when the second housing 102 is folded and closed on the first housing 101, and the second housing 102 is connected to the first housing 101. , The second hinge axis (A1, A2) can be rotated around any one of the selected hinge axis.
When the second housing 102 rotates about the first hinge axis A1 from the state in which the second housing 102 is folded on the first housing 101, the first avoidance groove 231 is the second avoidance groove 241. It moves away from the state facing the) and wraps around the outer circumferential surface of the coupling pin 204. While the second housing 102 rotates about the first hinge axis A1, the hinge shaft 203 is provided because the first evacuation groove 231 surrounds the outer circumferential surface of the coupling pin 204. Rotation around the second hinge axis A2 is limited. That is, in a state where the first avoidance groove 231 surrounds the outer circumferential surface of the coupling pin 204, the base surface of the first avoidance groove 231 and the outer circumferential surface of the coupling pin 204 interfere with the hinge shaft ( It is impossible for 203 to rotate about the second hinge axis A2.
Therefore, when the second housing 102 is rotated about the first hinge axis A1 and the first evacuation groove 231 faces the second evacuation groove 241, the second housing 102 is moved. The housing 102 may rotate only about the first hinge axis A1, and it is impossible to rotate the housing 102 about the second hinge axis A2.
When the second housing 102 rotates around the second hinge axis A2 from the state in which the second housing 102 is folded on the first housing 101, the first avoidance groove 231 is the second avoidance groove 241. ), The outer peripheral surface of the hinge shaft 203 is moved into the second avoidance groove 241. That is, when the second housing 102 is rotated about the second hinge axis A2, the hinge shaft 203 rotates and its outer circumferential surface is wrapped in the second avoidance groove 241. While the second housing 102 rotates about the second hinge axis A2, the hinge shaft 203 is surrounded by the second circumferential surface of the hinge shaft 203. Rotation around the first hinge axis A1 is limited. That is, in the state in which the second avoidance groove 241 surrounds the outer circumferential surface of the hinge shaft 203, the base surface of the second avoidance groove 241 and the outer circumferential surface of the hinge shaft 203 interfere with each other so that the second housing ( 102 may not rotate about the first hinge axis (A1).
Therefore, when the second housing 102 is rotated about the second hinge axis A2 and the first evacuation groove 231 faces the second evacuation groove 241, the second housing 102 is moved. The housing 102 may rotate only about the second hinge axis A2, and it is impossible to rotate the housing 102 about the first hinge axis A1.
As a result, when the second housing 102 is folded to the first housing 101, the second housing 102 may rotate about any one of the first and second hinge axes A1 and A2. While rotating about the hinge axis, it cannot rotate about the other hinge axis.
The hinge device 200 configured as described above is for connecting the first housing 101 and the second housing 102, and the hinge base 201 is mounted inside the first hinge arm 115. The hinge housing 202 is mounted and fixed inside the second hinge arm 125. As mentioned above, the hinge housing 202 is rotatably coupled to the hinge base 201 by the coupling pins 204. As a result, the second hinge arm 125 is coupled to the first hinge arm 115 so as to rotate about the first hinge axis A1.
The hinge shaft 203 is inserted into the second hinge arm 125 and coupled to the hinge housing 202 in a state in which the hinge shaft 203 is mounted on the second housing 102, thereby closing the second housing 102. It is connected to the second hinge arm 125. Thus, the second housing 102 is connected to the second hinge arm 125 and the hinge housing 202, and ultimately the first housing 101 by the hinge shaft 203.
Meanwhile, first and second hinge cams 206 and 207 may be accommodated in the hinge housing 202 to provide a driving force for rotating the hinge housing 202. When the first and second hinge cams 206 and 207 are installed in the hinge housing 202, the coupling pin 204 is inserted through the first hinge hole 223 to allow the stopper 205 to be elastic. The member 299, the second hinge cam 207, and the first hinge cam 206 are sequentially penetrated and bound to the hinge base 201.
One end of the first hinge cam 206 is fixed to the hinge base 201, and the other end of the first hinge cam 206 is assembled in the hinge housing 202. One end of the first hinge cam 206 is formed with a fixing groove (not shown) fixed to the end of the support portion 211. A portion of the outer circumferential surface of the support part 211 is formed in a planar shape, and the fixing groove is formed to correspond to the cross-sectional shape of the support part 211, so that the first hinge cam 206 does not rotate on the support part 211. Is not fixed. At the other end of the first hinge cam 206, a pair of valleys 261 are formed at intervals of 180 degrees.
The second hinge cam 207 is installed to face the first hinge cam 206 in a state capable of linearly moving in the hinge housing 202, one end of the pair of shaped parts 271 are formed have. At this time, one end of the elastic member 299 installed in the hinge housing 202 is supported by the second hinge cam 207 and the other end is supported by the stopper 205 to provide an elastic force. That is, the elastic member 299 is to provide the elastic force to the stopper 205 and the second hinge cam 207 at the same time. The second hinge cam 207 is inclined to be in close contact with the first hinge cam 206 by receiving the elastic force of the elastic member 299. Therefore, in a state in which the peaks 271 are separated from the valleys 261, the second hinge cam 207 moves in a direction in close contact with the first hinge cam 206 and at the same time. 271 rotate in the direction in which the bone portions 261 are engaged. As a result, the elastic force of the elastic member 299 is converted into a driving force for rotating the hinge housing 202 by the first and second hinge cams 206 and 207 according to the position where the hinge housing 202 rotates. do.
On the other hand, as mentioned above, the flexible printed circuit 208 is wired via the hinge device 200, and a circuit device (not shown) respectively installed in the first and second housings 101 and 102, respectively. ) Will be connected. The flexible printed circuit 208 includes a first winding part 281 and a second winding part 283, and a connection part 285 connecting the first and second winding parts 281 and 283. That is, the first and second windings 281 and 283 are formed at both ends of the connection part 285.
In this case, the flexible printed circuit 208 is divided into the first and second winding parts 281 and 283 and the connection part 285 in the following description of the present embodiment, but this is for brevity of description. In the manufacturing of the flexible printed circuit 208, the first and second winding parts 281 and 283 and the connection part 285 are not manufactured, respectively. That is, the flexible printed circuit 208 forms a printed circuit pattern for connecting the circuit devices inside the first and second housings 101 and 102, and is formed in the shape and the wiring position for the sake of brevity. Accordingly, the first and second windings 281 and 283 and the connection portion 285 are divided.
The first winding part 281 extends from the first housing 101 and is wound at least once so as to surround the support part 211 in the hinge base 201. Since the first winding part 281 is wound at least once in the hinge base 201, a tensile force may be prevented from being applied to the first winding part 281 even when the hinge housing 202 rotates. . That is, when the hinge housing 202 rotates, the diameter of the first winding part 281 decreases or increases in the space between the inner circumferential surface of the hinge base 201 and the support part 211, but the flexible printed circuit There is no tensile force acting on (208).
The connection part 285 extends from the first winding part 281 and is wired along an attachment groove 225 of the hinge housing 202. In this case, the connection part 285 is preferably attached to and fixed to the attachment groove 225 by an adhesive or a double-sided tape.
The second winding part 283 extends from an end of the connection part 285 and is wound at least once so as to surround the hinge shaft 203 and then extend into the second housing 102. Since the second winding part 283 is wound around the hinge shaft 203, even if the hinge shaft 203 rotates, it is possible to prevent a tensile force from being applied to the flexible printed circuit 208. That is, when the hinge shaft 203 rotates, the diameter of the second winding part 283 decreases or increases, but the tensile force does not act.
As a result, the connection part 285 is fixed to the attachment groove 225 formed on the outer circumferential surface of the hinge housing 202 and forms the first and second winding parts 281 and 283 at both ends of the connection part 285. As a result, even if the hinge housing 202 or the hinge shaft 203 rotates, the tensile force is prevented from being applied to the flexible printed circuit 208.
FIG. 5 is an assembled perspective view of the hinge device 200 and shows the hinge device 200 when the second housing 102 is folded to the first housing 101 as shown in FIG. 1. FIG. 6 is a view illustrating the inside of the hinge housing 202 of the hinge apparatus 200 illustrated in FIG. 5.
As shown in FIGS. 1, 5 and 6, when the first and second housings 101 and 102 are folded together, the opening 213 is opened along the direction of the second hinge axis A2. It is positioned to expose the support 211.
In this case, as the state in which the ridge portion 271 and the bone portion 261 is engaged with each other, the second housing 102 can stably maintain the folded state to the first housing 101, thereby allowing the hinge housing ( Rotation of 202 is limited. Therefore, the second housing 102 is limited to rotate about the first hinge axis (A1) in the folded state to the first housing (101). In addition, the hinge shaft 203 is kept stationary due to the static frictional force acting between the stopper 205 and the outer circumferential surface of the hinge shaft 203, and the second housing 102 is also the first housing. It is limited to rotate about the second hinge axis A2 in a state where it is folded at 101.
FIG. 7 illustrates the hinge device 200 when the second housing 102 is unfolded by pivoting the first hinge axis A1 as shown in FIG. 2. As shown in FIG. The inside of the hinge housing 202 is shown projected. The first and second hinge cams 206 and 207 rub each other while rotating the second housing 102 while the second housing 102 rotates about the first hinge axis A1 and unfolds. To generate a driving force. The opening and closing operation of the portable terminal 100 as described above will be readily understood by those skilled in the art through Korean Patent No. 296,038 (US Patent No. 6,292,980), which is granted to the present applicant. Therefore, a detailed description of an operation in which the second housing 102 is rotated around the first hinge axis A1 and unfolded will be omitted.
FIG. 8 shows the hinge device 200 when the second housing 102 is rotated about the second hinge axis A2 and unfolded as shown in FIG. 3. The hinge as shown in FIG. 6. The inside of the housing 202 is projected and shown. 9 and 10 show that the hinge shaft 203 rotates while the second housing 102 is rotated about the second hinge axis A2.
8 to 10, the hinge shaft 203 also rotates the second hinge axis A2 while the second housing 102 is rotated and unfolded about the second hinge axis A2. It will rotate around the center.
On the other hand, an outer circumferential surface of the hinge shaft 203 may be provided with a stopper groove 233 (shown in FIG. 8) engaged with the end of the stopper 205. When the second housing 102 is rotated about the second hinge axis A2 and opened to be opened at a predetermined angle, the end of the stopper 205 is engaged with the stopper groove 233 so that the second housing ( 102 may limit the rotation about the second hinge axis (A2). Therefore, when the second housing 102 is rotated and opened about the second hinge axis A2, the second housing 102 may be stably fixed. In this case, the angle at which the second housing 102 is rotated and opened about the second hinge axis A2 may be variously set according to a product. For example, when the terminal 100 is rotated around the second hinge axis A2 in a state where the terminal 100 is placed on a plane, the digital multimedia broadcasting can be conveniently used. In this case, the second housing ( The angle at which 102 is unfolded may be set to about 140 degrees.
When the second housing 102 rotates around the first hinge axis A1 and is unfolded, a user may use the terminal 100 to compose a voice call short message like a general foldable terminal 100. . When the second housing 102 rotates around the second hinge axis A2 and is unfolded, the user conveniently uses the terminal 100 to enjoy various multimedia functions such as digital multimedia broadcasting, video file viewing, and games. It is available.
In addition, the terminal 100 is used in a state in which the terminal 100 is disposed in the horizontal direction while the second housing 102 is rotated around the second hinge axis A2. Although the keypad 111 shows a keypad 111 applied to a general mobile phone, in the state where the terminal 100 is arranged to be long in the horizontal direction, the keypad 111 is used as a keypad 111 of a qwerty keyboard arrangement. If produced, the user will be able to conveniently write a long mail.
12 to 17 illustrate a two-axis hinge device 400 of a portable terminal according to another embodiment of the present invention. Another preferred embodiment of the present invention is a configuration similar to the preceding embodiment, the same as the preceding embodiment in the description of the configuration that can be easily understood through the preceding embodiment or its reference numerals and the configuration of the preceding embodiment Note that the same may be given or omitted, and detailed description thereof may also be omitted.
As shown in FIGS. 12 to 17, the two-axis hinge device 400 of the portable terminal according to another exemplary embodiment of the present invention has the second housing 102 of the first and second hinge shafts A1,. A2) is slightly different from the previous embodiment in the configuration of fixing so as not to rotate about the other hinge axis when rotated around the hinge axis. In addition, there is a difference in the configuration of limiting the range of the angle of the second housing 102 to rotate around the first hinge axis (A1).
12 and 13, the hinge device 400 includes a hinge base 201, a hinge housing 202, and a hinge shaft 403, and the second housing 102 includes the first housing ( 101) is configured to be rotatable. The hinge base 201 is fixed to the first housing 101, and the hinge housing 202 is coupled to the hinge base 201 to rotate about the first hinge axis A1, and the hinge The shaft 403 is coupled to the hinge housing 202 to rotate about the second hinge axis A2. In addition, the hinge shaft 403 is coupled to the second housing 102. In this case, when the hinge housing 202 rotates about the first hinge axis A1, the second housing 102 rotates about the first hinge axis A1 and the hinge shaft 403. Rotates about the second hinge axis A2, the second housing 102 rotates about the second hinge axis A2.
The hinge housing 202 is coupled to the hinge base 201 in a rotatable state by a coupling pin 404 extending in the direction of the first hinge axis A1, and within the hinge housing 202. The second hinge cams 206 and 207 and the elastic member 299 are accommodated to generate driving force for rotating the hinge housing 202. Since the configurations of the first and second hinge cams 206 and 207 and the elastic member 299 are the same as those of the previous embodiment, detailed descriptions thereof will be omitted.
One end of the coupling pin 404 is supported in the hinge housing 202 and the other end is fixed to the hinge base 201 to support rotation of the hinge housing 202. A fastening pin 217 is used to fix the coupling pin 404 to the hinge base 201, and a fixing groove 415 for binding the fastening pin 217 to one end of the hinge base 201. Is formed. As a result, the hinge housing 202 is rotated about the first hinge axis A1 while being supported by the coupling pin 404. In this case, a guide stopper 406 may be installed on the coupling pin 404. The guide stopper 406 is fixed to the coupling pin 404 and has a stopper rib 461 formed by protruding a portion of its outer circumferential surface.
A rotating stopper (not shown) is formed on an inner circumferential surface of the hinge housing 202. When the hinge housing 202 rotates about the hinge base 201, the rotating stopper is the guide stopper 406, specifically, Interfering with the stopper rib 461 limits the rotation range of the hinge housing 202. When the second housing 102 rotates about the first hinge axis A1, the hinge housing 202 rotates about the first hinge axis A1 together with the second housing 102. As a result, the stopper rib 461 and the rotary stopper limit the range in which the second housing 102 rotates about the first hinge axis A1. In a specific embodiment of the present invention, the operation of rotating the second housing 102 about the first hinge axis (A1) is the same as the opening and closing operation of a general folding type terminal, the rotation range of the It may be set within the range of 155 degrees to 170 degrees from the position folded in the first housing 101.
The hinge housing 202 accommodates a stopper 405 in sliding contact with the hinge shaft 403, and an accommodation hole 429 for installing the stopper 405 is formed at one end of the hinge housing 202. It is. The stopper 405 is installed in the accommodation hole 429 to linearly reciprocate in the direction of the first hinge axis A1. In this case, the receiving hole 429 is provided with a spring 459, one end of which is supported by the hinge housing 202 and the other end of which is supported by the stopper 405. The spring 459 presses the stopper 405 to provide an elastic force acting in a direction to protrude out of the hinge housing 202.
On the other hand, when the hinge shaft 403 is coupled to the hinge housing 202, a portion of the outer circumferential surface of the hinge shaft 403 interferes with the stopper 405, the stopper 405 of the spring 459 It is in close contact with the outer circumferential surface of the hinge shaft 403 by the elastic force. As a result, the stopper 405 is in close contact with the hinge shaft 403 by the elastic force of the spring 459, it is possible to maintain the state accommodated in the receiving hole 429 by the hinge shaft 403.
First and second stopper protrusions 451 and 453 are formed at the stopper 405, respectively, and a stopper hole 441 formed at the coupling pin 404 is provided at the hinge shaft 403 with a cam groove ( 431 are formed respectively. The first and second stopper protrusions 451 and 453, the stopper hole 441, and the cam groove 431 may be any of the first and second hinge shafts A1 and A2. When rotating about one hinge axis, it is fixed to prevent rotation about the other hinge axis.
The stopper hole 441 is formed at one end of the coupling pin 404 and is positioned in the hinge housing 202 so as to face the stopper 405, and the cam groove 431 is the hinge shaft 403. It is formed on the outer circumferential surface of the stopper 405 is selectively facing.
The first stopper protrusion 451 is formed on the stopper 405 to be in close contact with the outer circumferential surface of the hinge shaft 403 by the elastic force of the spring 459, the hinge shaft 403 is When the rotation is about the second hinge axis (A2) it may be in sliding contact with the bottom surface of the cam groove 431. That is, while the hinge shaft 403 is rotated about the second hinge axis A2, the cam grooves are formed along the trajectory of the first stopper protrusion 451 moving on the outer circumferential surface of the hinge shaft 403. 431 is formed.
The cam groove 431 is deeper and deeper while traveling along a circumferential direction from one point of the outer circumferential surface of the hinge shaft 403. The first stopper protrusion 451 is maintained in close contact with the bottom surface of the cam groove 431 by the elastic force of the spring 459. Therefore, as the hinge shaft 403 rotates about the second hinge axis A2, the first stopper protrusion 451 is completely accommodated in the cam groove 431 or a part thereof gradually increases in the cam groove ( 431). Thus, when the hinge shaft 403 rotates about the second hinge axis A2, the stopper 405 is driven by the cam groove 431 and the first stopper protrusion 451 to the first hinge axis. It moves linearly in the direction (A1).
The second stopper protrusion 453 is formed on the stopper 405. When the hinge housing 202 rotates about the first hinge axis A1, the second stopper protrusion 453 is formed around the first hinge axis A1. You will turn. However, while the hinge housing 202 is rotated about the first hinge axis A1, the second stopper protrusion 453 is maintained while facing the one end surface of the coupling pin 404. 1 is rotated around the hinge axis (A1), and selectively faces the stopper hole (441).
Hereinafter, the operations of the first and second stopper protrusions 451 and 453, the cam groove 431, and the stopper hole 441 will be described with reference to FIGS. 13 to 17.
First, the hinge device 400 is illustrated in FIG. 13 when the first and second housings 101 and 102 are folded together. In a state where the first and second housings 101 and 102 are folded together, the first stopper protrusion 451 is located in the cam groove 431, and the second stopper protrusion 453 is disposed at the stopper. It is located facing the hole 441. In this case, the first stopper protrusion 451 meshes with the deepest portion of the cam groove 431.
14 and 15 are views in which the hinge device 400 is operated when the second housing 102 is rotated about the first hinge axis A1 from a position folded in the first housing 101. It is shown. When the second housing 102 is rotated about the first hinge axis A1, the first stopper protrusion 451 is engaged with the cam groove 431 in the vicinity of the first hinge axis A1. The second stopper protrusion 453 is moved away from the position facing the stopper hole 441 so as to face one end surface of the coupling pin 404.
16 and 17 are views in which the hinge device 400 operates when the second housing 102 is rotated about the second hinge axis A2 from a position where the second housing 102 is folded on the first housing 101. It is shown. When the second housing 102 rotates about the first hinge axis A1, the first stopper protrusion 451 gradually moves to a portion where the depth of the cam groove 431 is shallow, and thus the cam groove. Gradually deviates from 431. Accordingly, the stopper 405 gradually moves in a direction away from the hinge shaft 403.
In this case, since the second stopper protrusion 453 maintains a state facing the stopper hole 441, the second stopper protrusion 443 is gradually inserted into the stopper hole 441 as the stopper 405 moves. That is, when the second housing 102 rotates about the second hinge axis A2, the second stopper protrusion 453 is coupled to the stopper hole 441. The second stopper protrusion 453 may not rotate around the first hinge axis A1 in a state where the second stopper protrusion 443 is engaged with the stopper hole 441. Therefore, the second housing 102 is rotated about the second hinge axis A2 so that the second housing 102 is not rotatable about the first hinge axis A1 in a state away from the first housing 101. .
As a result, in order for the second housing 102 to rotate about the second hinge axis A2, the second stopper protrusion 453 should be positioned at the position facing the stopper hole 441, and the second When the housing 102 rotates about the second hinge axis A2 and is located away from the first housing 101, the housing 102 may not be rotated about the first hinge axis A1.
14 and 15, when the second housing 102 rotates about the first hinge axis A1 from a position where the second housing 102 is folded to the first housing 101, the second stopper protrusion 453 is moved to a position that cannot be inserted into the stopper hole 441 while facing the one end surface of the coupling pin 404. That is, when the second housing 102 rotates about the first hinge axis A1, the stopper 405 may be in a state in which it cannot move in a direction away from the outer circumferential surface of the hinge shaft 403. . Therefore, the second housing 102 is fixed so as not to rotate about the second hinge axis A2 while rotating about the first hinge axis A1.
As a result, in order for the second housing 102 to rotate about the second hinge axis A2, the stopper 405 must be linearly moved and rotate about the first hinge axis A1. In order to do so, the second stopper protrusion 453 should be in a state capable of turning around the first hinge axis A1. When the second housing 102 is folded into the first housing 101, the stopper 405 can be linearly moved, and the second stopper protrusion 453 also has the first hinge shaft A1. You can turn around.
However, when the second housing 102 rotates about the first hinge axis A1, the second stopper protrusion 453 interferes with one end surface of the coupling pin 404, and the stopper 405 It is fixed so that it cannot move straight. In addition, when the second housing 102 is rotated about the second hinge axis A2, the second stopper protrusion 453 is engaged with the stopper hole 441 so that the first hinge axis A1 is rotated. It is fixed so that you cannot turn around. As a result, the second housing 102 is not rotatable about the other hinge axis while being rotated about the hinge axis of any one of the first and second hinge axes A1 and A2.
In the foregoing detailed description of the present invention, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present invention.
For example, although not disclosed in a specific embodiment of the present invention, if the stopper 205 can be engaged with the stopper 205 by forming a plurality of stopper grooves 233 on the outer circumferential surface of the hinge shaft 203, the second housing 102 may be stopped at various angular positions while pivoting about the second hinge axis A2. In addition, if another stopper groove 233 engaged with the stopper 205 is formed on the outer circumferential surface of the hinge shaft 203 while the second housing 102 is folded to the first housing 101. The second housing 102 may be more stably maintained in the folded state to the first housing 101.
