KR100802562B1 - Hinge device - Google Patents

Abstract

A hinge device is provided to reduce a unit cost and improve the productivity by simplifying the structure for selectively restraining vertical and horizontal rotations of a folder part with respect to a main body part. A hinge shaft(410) is combined in a main body part(200). A rotational shaft(440) is combined in a folder part(300) such that it has an axial line perpendicular to the hinge shaft(410). A shaft housing(470) is rotatably combined based on the hinge shaft(410) and rotatably accommodates the rotational shaft(440). A hinge guide groove(412) is formed in a circumferential direction of the hinge shaft(410) and a rotation guide groove is continuously formed along a circumferential direction of the rotational shaft(440) at the hinge shaft(410). A guide protrusion(442) is movably provided along the hinge guide groove(412) and the rotation guide groove at the rotational shaft(440).

Description

Hinge Device {HINGE DEVICE}

1 is a perspective view showing the structure of a personal portable terminal to which the hinge device according to the present invention is applied.

2 and 3 are perspective views showing the structure of the hinge device according to the present invention.

4 is a cross-sectional view taken along the line II of FIG. 1.

5 is a cross-sectional view taken along the line II-II of FIG. 1.

Figure 6 is a hinge device according to the present invention, a view for explaining the structure of the hinge shaft and the rotary shaft.

7 and 8 are views for explaining the operation structure of the hinge device according to the present invention.

<Description of the symbols for the main parts of the drawings>

200: main body 300: folder

400: hinge device 410: hinge shaft

412: hinge guide groove 414: rotation guide groove

416: Camp Profile 420: Hinge Bracket

430: fastening shaft 440: rotating shaft

442: guide protrusion 450: cam member

460: elastic member 470: shaft housing

480: ball plunger 490: cover housing

The present invention relates to a hinge device, and more particularly, to a hinge device that can simplify the structure and work maneuver, can reduce the cost and improve workability and productivity.

Recently, personal portable terminals have been widely used as conveniences that anyone can easily carry and use freely anywhere.

Such personal portable terminals are generally bar-type personal portable terminals, flip-type personal portable terminals, folder-type personal portable terminals, and slide-type personal portable terminals according to appearance or operation. -type).

Among them, the foldable personal portable terminal refers to a terminal configured to be opened and closed by rotating the folder in a longitudinal direction with respect to the main body. On the other hand, in recent years, as the terminal has gradually diversified its functional area into a multimedia terminal beyond simple voice communication means, the folder part can be opened and closed in the longitudinal direction of the main body part, and the folder part can be opened and closed in the transverse direction of the main body part. The terminal is being presented.

However, in the case of the conventional personal portable terminal which can be opened and closed in the longitudinal direction and the lateral direction, the structure of the hinge device for supporting the folder portion and the main body portion in the longitudinal and transverse directions so as to be rotatable is complicated and the number of parts is high, resulting in increased workability And there is a problem that the productivity is lowered. Accordingly, in recent years, various studies have been made on the hinge device for reducing the structure and the labor.

The present invention can simplify the structure and work maneuver, provides a hinge device that can reduce the cost, improve workability and productivity.

In particular, the present invention provides a hinge device that can simplify the structure for selectively restraining the longitudinal rotation and the lateral rotation of the folder portion relative to the main body portion, thereby simplifying the labor of the work. That is, in the present invention, the guide protrusion formed on the rotation shaft moves along the hinge guide groove and the rotation guide groove which are continuously formed on the hinge shaft, and the folder portion is selectively rotated in any one of the longitudinal direction and the transverse direction with respect to the main body portion. Provided is a hinge device that can be opened and closed.

In addition, the present invention provides a hinge device that can simplify the structure and work maneuver of the ball plunger for selectively fixing the folder portion.

In addition, the present invention provides a hinge device that can improve space utilization and design freedom and contribute to miniaturization.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, the hinge device is a hinge device for connecting the folder portion in the longitudinal direction and the transverse direction so as to be able to open and close the main body portion, Hinge shaft coupled to the main body portion to have an axis along the rotation shaft coupled to the folder portion to have an axis orthogonal to the hinge shaft, the shaft housing is rotatably coupled around the hinge shaft and includes a shaft housing rotatably received In the hinge shaft, a hinge guide groove along the circumferential direction of the hinge shaft and a rotation guide groove along the circumferential direction of the rotating shaft are continuously formed, and the guide protrusion is movable on the hinge shaft and the rotation guide groove. It is provided.

The hinge shaft is fixedly coupled to the body portion to have an axis along the transverse direction of the body portion, and the folder portion is rotated about the hinge shaft and can be opened and closed in the longitudinal direction with respect to the body portion. Such a hinge shaft may be mounted on the main body through a separate bracket, and in some cases, the hinge shaft may be configured to be directly fixed to the main shaft.

The rotating shaft is coupled to the main body portion to have an axis perpendicular to the hinge shaft, that is, the axis along the longitudinal direction of the main body portion, and the folder portion is rotated about the rotating shaft and can be opened and closed laterally with respect to the main body portion.

On the other hand, the hinge device may be configured such that the longitudinal opening and closing of the folder portion relative to the body portion is made elastic. The structure for elastically implementing the longitudinal opening and closing of the folder portion relative to the main body portion can be variously changed according to the required conditions and design specifications.

For example, the hinge shaft may include a camp profile formed along an outer circumferential surface of the hinge shaft so that longitudinal opening and closing of the folder portion with respect to the main body portion may be made elastic. It may include a cam member for interacting with the camp profile, and an elastic member for providing an elastic force to move the cam member in the direction approaching the camp profile.

As such, the cam member and the camp profile may be configured to interact along the radial direction of the hinge shaft. In some cases, the cam member may linearly move along the axis direction of the hinge shaft and interact with the camp profile. Can be configured to The camp profile structure and characteristics of the hinge shaft can be changed in various ways depending on the required conditions and design specifications.

The shaft housing accommodates the hinge shaft and the rotary shaft, respectively, and allows the folder portion to be rotatably structurally connected to the body portion about the hinge shaft and the rotary shaft.

On the other hand, the folder portion is configured to rotate open and close only in any one direction of the longitudinal direction and the transverse direction with respect to the body portion. In other words, when the folder portion is rotated in the longitudinal direction with respect to the main body portion, the lateral rotation of the folder portion is constrained. It is configured to be.

To this end, a hinge guide groove is formed along the circumferential direction of the hinge shaft on one outer peripheral surface of the hinge shaft, and a rotation guide groove along the circumferential direction of the rotating shaft is continuously connected to one end of the hinge guide groove on the other side of the hinge shaft. It is formed, the rotary shaft is provided with a guide protrusion to move along the hinge guide groove and the rotation guide groove. Therefore, while the folder portion rotates in the longitudinal direction about the hinge shaft, the guide protrusion moves along the hinge guide groove and the lateral rotation of the folder portion can be constrained, and the guide portion rotates in the lateral direction about the rotation shaft. The protrusion moves along the rotation guide groove and the longitudinal rotation of the folder portion may be restricted.

A cover housing may be provided to enclose the shaft housing, the cover housing being provided to receive the shaft housing therein to substantially form the appearance of the hinge device.

Meanwhile, a position fixing groove may be formed on an outer circumferential surface of the rotating shaft, and a ball plunger may be provided in the shaft housing to selectively fix a folder portion that is selectively constrained to the position fixing groove and rotated about the rotating shaft.

The ball plunger is coupled to a ball disposed so as to approach and space the outer circumferential surface of the rotating shaft along a radial direction of the rotating shaft, a spring providing an elastic force to move the ball in a direction approaching the rotating shaft, and coupled to the shaft housing to provide a rear end of the spring. It may be configured to include a support plate for supporting. In addition, the ball plunger may further include a ball plate interposed between the ball and the spring, the ball plate is preferably formed integrally with the rear end of the ball. Of course, the ball plate may be provided separately from the ball, but it is preferable that the ball and the ball plate are integrated and provided as one so as to simplify the structure and the labor.

For reference, in the present invention, a personal portable device is a portable electric and electronic device such as a personal digital assistant (PDA), a smart phone, a handheld PC, a mobile phone, an MP3 player, etc. A predetermined communication module, such as a code division multiplexing access (CDMA) module, a Bluetooth module, an infrared communication module (IrDA), a wired or wireless LAN card, may be provided, and a predetermined computing power may be provided by mounting a predetermined microprocessor for performing a multimedia playback function. It can be used as a concept to collectively name the terminal equipped with.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, in the present description, the same numbers refer to substantially the same elements, and may be described by quoting the contents described in other drawings under the above rules, and the contents repeated or deemed apparent to those skilled in the art may be omitted.

1 is a perspective view showing the structure of a personal portable terminal to which the hinge device according to the present invention is applied, and FIGS. 2 and 3 are perspective views showing the structure of the hinge device according to the present invention.

4 is a cross-sectional view taken along the line I-I of FIG. 1, FIG. 5 is a cross-sectional view taken along the line II-II of FIG. 1, and FIG. 6 is a hinge device according to the present invention, for explaining the structure of the hinge shaft and the rotating shaft. Drawing.

As shown in FIG. 1, the personal portable terminal 100 to which the hinge apparatus according to the present invention is applied includes a main body 200, a folder unit 300, and a hinge device 400.

A printed circuit board for accommodating various controls may be accommodated in the main body 200, and a keypad having a plurality of keys for inputting information and a talker for transmitting a voice of a user may be accommodated therein. It may be provided.

The inner surface of the folder unit 300 may be provided with a display unit for outputting the image information, the upper surface of the inner surface of the folder unit 300 may be provided with a receiver for delivering a voice from the other party.

The hinge device 400 is coupled to the main body 200 and the folder 300, respectively, so that the folder 300 can be selectively opened and closed in the longitudinal direction and the transverse direction with respect to the main body 200. In addition, the main body hinge portion 210 may be formed on one side of the upper end of the main body portion 200, and the hinge device 400 is coupled to the main body hinge portion 210 and the folder portion 300, respectively. The upper end of the unit 200 may be disposed on the other side.

As shown in FIGS. 2 to 6, the hinge device 400 according to the present invention includes a hinge shaft 410 and a guide protrusion 442 having a hinge guide groove 412 and a rotation guide groove 414. The rotary shaft 440, the shaft housing 470 may be provided in one module form.

The hinge shaft 410 is fixedly coupled to the main body hinge portion 210 of the main body portion 200 to have an axis along the transverse direction of the main body portion 200, and the folder portion 300 is the hinge shaft 410. Rotate around and can be opened and closed in the longitudinal direction with respect to the main body 200.

The hinge shaft 410 may be directly and fixedly coupled to the main body 200, but when the hinge shaft 410 is fixed to the main body 200, such as a screw directly on the hinge shaft 410 Since the fastening member is difficult to fasten, the hinge shaft 410 is preferably mounted on the main body 200 through a separate bracket. Hereinafter, an example in which the hinge shaft 410 is fixedly coupled to the main body 200 through the hinge bracket 420 coupled to the main body 200 will be described.

In addition, the hinge shaft 410 and the hinge bracket 420 may pass through the hinge shaft 410 and may be provided in the form of a module coupled through a coupling shaft 430 mounted to the hinge bracket 420. That is, a conventional restraint ring 432 such as an E-ring is coupled to an end of the fastening shaft 430 which passes through the hinge shaft 410 and the hinge bracket 420 sequentially and is exposed to the outside of the hinge bracket 420. By this restriction, the hinge shaft 410, the hinge bracket 420 and the fastening shaft 430 may be provided in the form of a module coupled to one.

In addition, the coupling structure between the hinge shaft 410 and the hinge bracket 420 may be variously changed according to the required conditions and design specifications. For example, one end of the hinge shaft 410 coupled to the hinge bracket 420 may be formed in a non-circular shape, and a non-circular hole corresponding to the hinge shaft 410 may be formed in the hinge bracket 420. Therefore, the end of the hinge shaft 410 formed in a non-circular shape is inserted into the non-circular hole of the hinge bracket 420, the rotation of the hinge shaft 410 relative to the hinge bracket 420 can be restrained. Here, non-circular means a shape that is not circular, and may include a general polygonal shape as well as an elliptic shape.

Meanwhile, a camp profile 416 may be formed on an outer circumferential surface of the hinge shaft 410. The camp profile 416 may be configured by successively forming the ridges and valleys having a height difference along the radial direction of the hinge shaft 410, the shape and structure of the camp profile 416 is required conditions and It can be changed in various ways according to design specifications.

The rotation shaft 440 is fixedly coupled to the folder portion 300 to have an axis perpendicular to the hinge shaft 410. That is, the rotary shaft 440 is coupled to the main body 200 to have an axis along the longitudinal direction of the main body 200, the folder portion 300 is rotated about the rotary shaft 440 and the main body It may be opened and closed laterally with respect to 200.

In addition, the rotary shaft 440 is disposed to be accessible and spaced apart from the camp profile 416, the cam member 450 to interact with the camp profile 416, and the cam member 450 is a camp profile It may include an elastic member 460 to provide an elastic force to move in the direction approaching (416).

That is, the cam member 450 may be rotated together with the rotary shaft 440 as the rotary shaft 440 rotates about the hinge shaft 410 together with the folder part 300, and the rotary shaft 440. As it rotates, it rotates in contact with the camp profile 416 of the hinge shaft 410 and may interact with the camp profile 416.

The elastic member 460 is provided to provide an elastic force so that the cam member 450 moves in a direction approaching the camp profile 416 of the hinge shaft 410. The structure and type of the elastic member 460 may be variously changed according to the required conditions and design specifications. For example, a conventional coil spring may be used as the elastic member 460, and the elastic member 460 is interposed between the cam member 450 and the rotary shaft 440 such that the cam member 450 is a camp profile. Elastically contact 416.

By the interaction between the cam member 450 and the camp profile 416 by the elastic force of the elastic member 460, the linear motion of the cam member 450 can be converted into an elastic rotational motion, and by this force The longitudinal opening and closing of the folder part 300 with respect to the main body part 200 may be made elastic.

The hinge shaft 410 in which the cam member 450 and the camp profile 416 are formed may be formed of a conventional plastic material, but has excellent mechanical, thermal, and chemical properties even in a wide range of use temperatures for a long time, and has excellent dimensions. Since the use of a stable material is required, it is preferable to be formed using a lubricity material having excellent self-lubricating properties and excellent fatigue properties such as polyacemethylene, polyamide and polyamide imide. Do.

In the above-described and illustrated embodiments of the present invention, the cam member 450 and the camp profile 416 are described with an example configured to interact along the radial direction of the hinge shaft 410, but in some cases, the cam member And the camp profile may be configured to interact along the axis direction of the hinge shaft 410. That is, in the embodiment of the present invention, the cam member 450 is configured to linearly move in a direction orthogonal to the hinge shaft 410 and interact with the camp profile 416. Likewise, the cam member may be configured to linearly move along the axial direction of the hinge shaft 410 and interact with the camp profile.

The shaft housing 470 is rotatably coupled around the hinge shaft 410, and the rotation shaft 440 is rotatably received in the shaft housing 470. The shaft housing 470 may include a first housing 482 and a second housing 484 that mutually cooperate to form an accommodation space therein, the hinge shaft coupled to the main body 200 ( 410 and the rotating shaft 440 coupled to the folder portion 300, respectively, the main body 200 and the folder portion 300 is structurally rotatable around the hinge shaft 410 and the rotating shaft 440 To be connected.

In addition, a rotary protrusion may be formed on any one side of the mutual contact surface of the rotary shaft 440 and the shaft housing 470 so that the structural connection between the rotary shaft 440 and the shaft housing 470 can be stably maintained. A projection receiving groove may be formed at the other side of the mutual contact surface of the rotary shaft and the shaft housing 470 to accommodate the rotation protrusion. Hereinafter, the projection receiving groove 446 is formed on the outer circumferential surface of the rotary shaft 440 along the circumferential direction of the rotary shaft 440, and the inner surface of the shaft housing 470 is rotatably accommodated in the projection receiving groove 446. An example in which the rotation protrusion 476 is formed will be described.

As the rotary protrusion 476 and the projection receiving groove 446 are formed on the contact surface of the rotary shaft 440 and the shaft housing 470, the rotary protrusion 476 during the longitudinal rotation of the folder portion 300. And by the mutual interference of the projection receiving groove 446 can be made more stable restraint between the rotation shaft 440 and the shaft housing 470, the projection receiving groove 446 during the lateral rotation of the folder portion 300 The rotary shaft 440 is rotated in a state in which the rotary protrusion 476 is accommodated, and the rotation of the rotary shaft 440 with respect to the shaft housing 470 may be more stably supported.

When the folder part 300 is opened and closed with respect to the main body part 200 by such a configuration, the rotating shaft 440 and the shaft housing 470 together with the folder part 300 are centered on the hinge shaft 410. When the folder portion 300 is opened and closed relative to the main body portion 200, the folder portion 300 may be rotated about the rotation shaft 440.

In addition, the folder portion 300 is configured to rotate open and close only in any one direction of the longitudinal direction and the transverse direction with respect to the main body portion 200. That is, when the folder portion 300 is rotated in the longitudinal direction with respect to the body portion 200, the lateral rotation of the folder portion 300 is configured to be constrained, on the contrary, the folder portion 300 is the body portion 200 When rotated in the transverse direction with respect to), the longitudinal direction of the folder portion 300 is configured to restrict the rotation.

To this end, hinge guide grooves 412 and rotation guide grooves 414 are continuously formed on the outer circumferential surface of the hinge shaft 410 to provide a J-shaped rail, and the rotation shaft 440 has hinge guide grooves. The guide protrusion 442 is provided to be movable along the 412 and the rotation guide groove 414. That is, the hinge guide groove 412 is formed at one side of the outer circumferential surface of the hinge shaft 410 along the circumferential direction of the hinge shaft 410, and the rotation guide groove 414 is continuously from one end of the hinge guide groove 412. It is formed on the other side of the outer peripheral surface of the hinge shaft 410 along the circumferential direction of the rotary shaft 440 to be connected to.

Accordingly, while the folder portion 300 rotates in the longitudinal direction about the hinge shaft 410, the guide protrusion 442 moves along the hinge guide groove 412 and the horizontal rotation of the folder portion 300 is restricted. The guide protrusion 442 moves along the rotation guide groove 414 and the longitudinal rotation of the folder 300 is constrained while the folder portion 300 rotates in the horizontal direction about the rotation shaft 440. Can be.

In addition, a cover housing 490 may be provided to surround the shaft housing 470. The cover housing 490 is provided to receive the shaft housing 470 therein to substantially form the exterior of the hinge device. In addition, the cover housing 490 may be rotated about the rotation shaft 440 together with the shaft housing 470 when the folder 300 is opened and closed with respect to the main body 200 in the longitudinal direction.

On the other hand, a position fixing groove 444 may be formed on the outer circumferential surface of the rotary shaft 440, and the shaft housing 470 is selectively constrained to the position fixing groove 444 and rotates about the rotary shaft 440. A ball plunger 480 may be provided to selectively fix the folder unit 300 to be used.

The number and spacing of the position fixing grooves 444 may be variously changed according to the required conditions and design specifications. For example, two position fixing grooves 444 may be formed on the outer circumferential surface of the rotary shaft 440 at predetermined intervals, and the ball plunger 480 is selectively constrained to one of the position fixing grooves in the transverse direction. It is possible to fix the open and closed state of the folder unit 300 to be rotated.

The ball plunger 480 is a ball 482 which is disposed to be accessible and spaced apart from the outer circumferential surface of the rotary shaft 440 along the radial direction of the rotary shaft 440, the ball 482 approaches the rotary shaft 440 It may include a spring 486 to provide an elastic force to move in the direction, the support plate 488 coupled to the shaft housing 470 to support the rear end of the spring 486.

In addition, the ball plunger 480 may further include a ball plate 484 interposed between the ball 482 and the spring 486, the ball plate 484 is formed integrally at the rear end of the ball 482 This is preferred. Of course, the ball plate may be provided separately from the ball, but it is preferable that the ball 482 and the ball plate 484 are integrated and provided as one so as to simplify the structure and the labor.

On the other hand, Figures 7 and 8 are views for explaining the operation structure of the hinge device according to the present invention.

As shown in FIG. 7, when the folder 300 is opened and closed in the longitudinal direction, the folder 300 may be rotated about the hinge shaft 410 together with the rotation shaft 440 and the shaft housing 470. . At this time, the guide protrusion 442 of the rotary shaft 440 may move along the hinge guide groove 412 formed on the outer circumferential surface of the hinge shaft 410 along the circumferential direction of the hinge shaft 410. Therefore, while the folder portion 300 rotates in the longitudinal direction about the hinge shaft 410, the lateral rotation of the folder portion 300 is caused by interference caused by the guide protrusion 442 received in the hinge guide groove 412. This can be restrained.

In addition, as illustrated in FIG. 8, the folder 300 may be rotated about the rotation shaft 440 when the folder 300 is opened and closed in the lateral direction. In this case, the guide protrusion 442 of the rotary shaft 440 may move along the rotation guide groove 414 formed on the outer circumferential surface of the hinge shaft 410 along the circumferential direction of the rotary shaft 440. Therefore, while the folder unit 300 rotates in the transverse direction about the rotation shaft 440, the longitudinal rotation of the folder unit 300 by the interference caused by the guide protrusion 442 is accommodated in the rotation guide groove 414. This can be restrained.

As described above, according to the present invention can simplify the structure and work maneuver, there is an effect that can reduce the cost and improve the workability and productivity.

In particular, according to the present invention, by simplifying the structure for selectively restraining the longitudinal rotation and the lateral rotation of the folder portion relative to the body portion, it is possible to reduce costs and improve workability and productivity.

That is, according to the present invention, there is no need to independently configure the structure for selectively restraining the longitudinal rotation and the lateral rotation of the folder portion relative to the main body portion according to each rotation direction, the guide projections formed on the rotation shaft to the hinge shaft The structure and workmanship can be considerably simplified by moving along the hinge guide groove and the rotation guide groove which are continuously formed and allowing the folder portion to be rotated and opened only in one of the longitudinal and transverse directions with respect to the main body. .

In addition, according to the present invention, since the ball and the ball plate of the ball plunger are integrally formed, the structure and the labor of the ball plunger can be simplified.

In addition, according to the present invention can improve space utilization and design freedom and contribute to miniaturization.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (12)

In the hinge device for connecting the folder portion in the longitudinal and transverse directions so as to open and close the body portion, A hinge shaft coupled to the main body to have an axis along the transverse direction of the main body; A rotary shaft coupled to the folder portion to have an axis perpendicular to the hinge shaft; And And a shaft housing rotatably coupled around the hinge shaft, the shaft housing being rotatably received. The hinge shaft has a hinge guide groove along the circumferential direction of the hinge shaft and a rotation guide groove along the circumferential direction of the rotating shaft, and the rotation shaft is movable along the hinge guide groove and the rotation guide groove. Hinge device characterized in that the guide projection is provided. The method of claim 1, The hinge shaft further includes a camping profile formed along an outer circumferential surface, The rotating shaft may be disposed to be accessible and spaced apart from the camp profile, the cam member interacting with the camp profile, and an elastic member for providing an elastic force to move in the direction in which the cam member approaches the camp profile. Hinge device further comprising. The method of claim 1, The rotary shaft further includes a position fixing groove formed on the outer circumferential surface, The shaft housing is hinged, characterized in that the ball plunger is selectively coupled to the position fixing groove and selectively fixes the folder portion rotated about the rotation shaft. The method of claim 3, The ball plunger, A ball disposed to be approachable and spaced apart from an outer circumferential surface of the rotary shaft along a radial direction of the rotary shaft; A spring providing an elastic force to move the ball in a direction approaching the rotating shaft; And And a support plate coupled to the shaft housing to support a rear end of the spring. The method of claim 4, wherein The ball plunger further comprises a ball plate interposed between the ball and the spring, the ball plate is a hinge device, characterized in that formed integrally with the rear end of the ball. The method of claim 1, Further comprising a hinge bracket coupled to the main body portion and a fastening shaft passing through the hinge shaft and mounted to the hinge bracket, And the hinge shaft is mounted to the hinge bracket. The method of claim 1, And a cover housing provided to receive the shaft housing therein. The method of claim 1, Further comprising a rotary protrusion formed on any one side of the mutual contact surface of the rotary shaft and the shaft housing, and a rotary guide groove formed to be accommodated on the other side of the mutual contact surface of the rotary shaft and the shaft housing. Hinge device, characterized in that. In the hinge device for connecting the folder portion in the longitudinal and transverse directions so as to open and close the body portion, A hinge shaft coupled to the main body to have an axis along the transverse direction of the main body and having a camp profile along an outer circumferential surface thereof; A rotating shaft coupled to the folder part to have an axis perpendicular to the hinge shaft and having a position fixing groove formed on an outer circumferential surface thereof; A shaft housing rotatably coupled around the hinge shaft, the shaft housing rotatably received; And Balls that are disposed to be approachable and spaced apart from the outer circumferential surface of the rotary shaft along the radial direction of the rotary shaft, the ball selectively restrained in the position fixing groove, the spring provides an elastic force to move in the direction approaching the rotary shaft And a ball plunger including a ball plate integrally formed at the rear end of the ball so as to be interposed between the ball and the spring, and a support plate coupled to the shaft housing to support the rear end of the spring. The rotating shaft may be disposed to be accessible and spaced apart from the camp profile, the cam member interacting with the camp profile, and an elastic member for providing an elastic force to move in the direction in which the cam member approaches the camp profile. Including, The hinge shaft has a hinge guide groove along the circumferential direction of the hinge shaft and a rotation guide groove along the circumferential direction of the rotating shaft, and the rotation shaft is movable along the hinge guide groove and the rotation guide groove. Hinge device characterized in that the guide projection is provided. The method of claim 9, Further comprising a hinge bracket coupled to the main body portion and a fastening shaft passing through the hinge shaft and mounted to the hinge bracket, And the hinge shaft is mounted to the hinge bracket. The method of claim 9, And a cover housing provided to receive the shaft housing therein. The method of claim 9, Further comprising a rotary protrusion formed on any one side of the mutual contact surface of the rotary shaft and the shaft housing, and a rotary guide groove formed to be accommodated on the other side of the mutual contact surface of the rotary shaft and the shaft housing. Hinge device, characterized in that.

Images