KR20050002561A - hinge mechanism for a folder type cover of portable communication terminals - Google Patents

Abstract

PURPOSE: A hinge device for a folder type cover of a portable communication terminal is provided to rapidly open a cover up to a rapid opening position where the cover is pulled back at about 90 degrees in order to stop the cover if the cover is open over a certain border position, and to stop the cover in an opened state up to a perfect opening angle if the cover is open at bigger angle, so that a user can randomly control a screen angle. CONSTITUTION: A cam portion(35) of a hinge cam(34) comprises as follows. The first stop groove(35a) stops a cover by setting a cam operating unit of the hinge cam(34) when the cover is in perfectly closed position. An up inclined surface(35b) gradually increases in convex type between the perfectly closed position of the cover and a predetermined border position. A down inclined surface(35c) gradually decreases between the border position and a rapid opening position as many as a predetermined opening angle. The second stop groove(35d) stops the cover by setting the cam operator in the rapid opening position. A dwell portion(35e) is comprised at an interval of a perfectly opening position in the second stop groove(35d).

Description

Hinge mechanism for a folder type cover of a portable communication terminal

The present invention relates to a hinge device for a cover of a portable communication terminal, and more particularly, to a hinge device for pivotally connecting a cover of a folder type to the terminal body.

As shown in FIG. 1, the cover hinge device is generally rotatably inserted into the hinge housing 31 and the inner space of the hinge housing 31, and one end thereof protrudes out of the hinge housing 31. The other end is provided with a hinge shaft 32 having a cam operating portion 33, the rotation is prevented in the inside of the hinge housing 31 to allow only slide movement in the longitudinal direction back and forth, the hinge shaft 32 at one end Hinge cam 34 having a cam portion 35 for controlling the rotation of the cam operating portion 33 in frictional contact with the cam operating portion 33 of the, and the rear surface of the hinge cam 34 and the hinge housing ( 31 is installed between the inner wall of the compressed state and includes a hinge spring (36) for pushing the hinge cam 34 toward the hinge shaft (32).

One end of the hinge shaft 32 is protruded to the outside of the hinge housing and fitted into the coupling groove 13 provided in the cover 20 to be connected to the cover 20. Accordingly, the hinge shaft 32 rotates in accordance with the opening and closing operation of the cover 20, and the cam operating portion 33 provided at the tip of the hinge shaft 32 has the hinge cam 34 installed in the hinge housing 31. Rotation control by the cam unit 35, thereby adjusting the opening and closing operation of the cover 20 connected to the hinge shaft (32).

By the way, in the conventional cover hinge device, the cam portion 35 of the hinge cam 34 has a cam profile as shown in FIG. That is, when the cover 20 is in the fully closed position A of FIG. 2, the cam portion 35 of the hinge cam 34 seats the cam operating portion 33 of the hinge cam 34 to cover the cover 20. Is provided with a stop groove (35a) for fixing at its fully closed position (A), the height of the gradually increasing height between the boundary position (B) of the cover 20 is opened approximately 40 degrees from the fully closed position (A) It is provided with the inclined surface 35b, It is set as the shape provided with the downward inclined surface 35c from which the height gradually descends beyond the said boundary position B to the fully open position D. As shown in FIG. In the fully open position (D), a stop groove (35f) is formed to seat the cam operating portion (33) and supports it without fine movement, and the stop groove (35f) in the fully open position (D) is the completely closed position (A). Are arranged so as to face each other on the same straight line between the stop groove 35a and the cam portion 35.

Accordingly, in the conventional hinge apparatus, as shown in FIG. 2, the cam operating portion 33 of the hinge shaft 32 is along the upward inclined surface 35b of the hinge cam 34 until the cover is opened approximately 40 ° or more. If no force is applied to the cover 20 in the section, the cover 20 will return to its fully closed position A by itself, and the cover 20 will be opened beyond its boundary position B by an abnormal angle. When given, the cam operating portion 33 is rotated rapidly along the downward inclined surface (35c) to the fully open position (D) to be seated in the stop groove (35f) to the cover 20 to the fully open position (D) Open and stop in that state.

When the cover 20 opened in the fully open position D is closed, the cam operating part 33 returns to the fully closed position A while going through the cam contour of the cam part 35 in the reverse order.

That is, when the cover 20 is opened at a predetermined angle or more, the cover 20 is completely opened in a state suitable for quick communication by the cam operation, and when the cover is closed, the cover 20 is the downwardly inclined surface 35c and the boundary position. Closes while returning to the fully closed position (A) quickly while passing through (B) and the upwardly inclined surface 35b. Therefore, according to the conventional cover hinge device, the cover 20 cannot be adjusted to a state other than the fully open state or the fully closed state.

However, in recent years, the mobile phone has a tendency to gradually increase the additional function of sending and receiving text messages or video transmission in addition to the original call function, the cover hinge device of the conventional mobile phone can not be stopped by opening the cover to the desired angle. Therefore, when the cover is opened to the fully open position as described above, it is convenient to talk, but there is an inconvenience in seeing the screen provided on the inner side of the cover to send a text. That is, since the screen is inclined about 180 degrees with respect to the body, the screen may not be easily seen by light. In this case, it is necessary to adjust the opening angle in a state in which the cover is slightly lifted from the fully opened position, but the conventional mobile phone cover has a disadvantage in that the opening angle cannot be adjusted as described above.

Accordingly, the present invention is to solve the disadvantages of the cover hinge device of the conventional mobile phone, when opening the cover to open the cover rapidly to a small angle opening position rather than the full opening position, any cover beyond the middle opening position It is an object of the present invention to provide a hinge device for a cover to be controlled to stop at the open position of.

1 is an exploded perspective view of the cover hinge device of the mobile phone,

Figure 2 is a side view showing the opening and closing position of the cover of the conventional mobile phone,

3 is a cam diagram of a hinge cam of a conventional hinge device;

4 is a perspective view of a hinge cam of the hinge device according to the present invention;

5 is a cam diagram of the hinge cam of FIG.

Figure 6 is a side view showing the opening and closing position of the cover of the mobile phone according to the present invention.

※ Explanation of symbols about main part of drawing ※

10: body 12 of the terminal: bracket

13: coupling groove 20: cover

30: hinge device according to the present invention

31: hinge housing 32: hinge shaft

33: cam operating part 34: hinge cam

35: cam portion 35a: first stop groove

35b: upward slope 35c: downward slope

35d: second stop groove 35e: resting part

35f: 3rd stop groove 36: hinge spring

A: Fully closed position B: Boundary position

C: Quick open position D: Full open position

The hinge device of the present invention for achieving the above object is a hinge housing which is inserted into one side of the body or cover of the portable communication terminal, and is rotatably inserted into the inner space of the hinge housing, one end is the outside of the hinge housing Is coupled to the counterpart of the portable communication terminal corresponding to the part in which the hinge housing is installed, and the other end thereof has a hinge shaft having a cam operating portion, and rotation is inhibited inside the hinge housing to prevent slide movement only in the longitudinal direction. A hinge cam which is inserted into the hinge housing and has a cam portion at one end thereof in frictional contact with the cam operating portion of the hinge shaft to control the rotation of the cam operating portion, and compressed between the hinge cam and the inner wall of the hinge housing. In the hinge device is installed in a state including a hinge spring for pushing the hinge cam toward the hinge axis,

The cam portion of the hinge cam has an upwardly inclined surface whose height gradually increases between the intermediate open positions of the cover about 40 ° from the fully closed position, a downwardly inclined surface which gradually decreases in the intermediate open position, and a portion where the downwardly inclined surface ends And a second stop groove for temporarily seating the cam operating portion to stop the cover at that position, and a rest portion formed at a constant height between the second stop groove and the fully open position.

Therefore, the cover hinge device of the present invention consists of the cam portion of the hinge cam as described above, the cover is rapidly opened up to the intermediate open position and stops in that state, and the cover is opened when the cover is opened at a larger angle beyond the stop position. It stops open at an arbitrary angle up to the full opening angle, providing a convenient time when sending and receiving text information or watching a video.

Hereinafter, an embodiment of a hinge device according to the present invention will be described in detail according to the accompanying drawings.

As shown in FIG. 1, the hinge device according to the present invention includes a hinge housing 31 inserted into a bracket 22 provided at a front end of a cover 20 of a portable communication terminal, and the hinge housing 31. It is rotatably inserted into the inner space and one end is projected to the outside of the hinge housing 31 is fitted into the coupling groove 13 provided in the cover 20 of the mobile phone to rotate in accordance with the operation of the cover 20, The tip of the hinge housing 31 has a hinge shaft 32 having a cam operating portion 33 and a cam portion 35 engaged with the cam operating portion 33 of the hinge shaft 32 at one end thereof. A hinge cam 34 inserted into the hinge housing 31 and stopped in the internal space of the hinge housing 31, but installed to be slidably movable in a longitudinal direction, and the hinge cam 34. ) Is composed of a hinge spring (36) for pushing toward the hinge shaft (32).

Figure 4 is a perspective view and a front view showing a hinge cam of the hinge device of the present invention shown in Figure 1, Figure 5 is a cam line diagram of the cam portion of the hinge cam shown in Figure 4, the cam portion of the hinge cam (34) As shown in Figs. 4 and 5, the cam operating portion 33 of the hinge shaft 32 is seated in the fully closed position A of the cover, and the cam operating portion 33 is moved to the position A thereof. It is provided with a first stop groove (35a) fixed in.

A parabolic upwardly inclined surface 35b is provided between the boundary position B of the cover 20 about 40 ° from the fully closed position A, and gradually rises convexly upward. An inclined parabolic downwardly inclined surface 35c to a rapid opening position C of ° and a cam operating portion 33 seated at the rapid opening position C to stop the cover 20 at that position. The fully open position D at which the stop part 35e (dwell) formed at a constant height and the stop part 35e are formed between the two stop grooves 35d and the second stop groove 35d and the fully open position D. It consists of a third stop groove (35f) formed in the). The third stop groove 35f is formed to face each other on the same diameter as the first stop groove 35a.

As shown in FIG. 6, when the cover 20 is in the fully closed position A, the hinge cam 34 has a cam operating portion 33 connected to the cover 20 side with the first stop groove 35a. Since the third stop groove 35f is simultaneously seated and supported, the cover 20 maintains the closed state unless it acts on the cam operating portion 33 by a predetermined force or more through the cover.

Until the cover 20 reaches the boundary position B in the fully closed position A, the cam operating portion 33 moves along the upward inclined surface 35b, where force is applied to the cover 20 at that position. When removed, the cam operating portion 33 returns to the initial full open position A along the upward inclined surface 35b. That is, if the cover 20 is not opened beyond the "B" position of FIG. 6, the cover 20 will automatically return to its original position and close. It is preferable to set the angle of this boundary position B to 40 degrees, but it can change as many as a design specification.

When the cover 20 exceeds the boundary position B of FIG. 6, the cam operating portion 33 moves along the downward inclined surface 35c to rest on the second stop groove 35d and stop. In this case, the second stop groove 35d is preferably formed at a position of approximately 90 °. That is, when the cover 20 is opened at an angle larger than the boundary position B in FIG. 6, the cover 20 opens rapidly by itself to 90 ° and stops at the quick open position C. FIG.

Since the cam operating part 33 moves along the resting part 35e formed at a constant height from the opening angle of 90 ° or more to the fully open position D, when the force is removed at any position, the cam does not move at that position. do. That is, at any position between the fully open position (D) of 90 ° or more, if the cover 20 is not applied in the rotational direction, it can be stopped at that position, so that the user can arbitrarily adjust the screen angle.

Therefore, according to the hinge device of the present invention, when the cover is opened over a predetermined boundary position, the cover is opened rapidly to the rapid open position, which is flipped about 90 °, stops in that state, and the cover is moved out of the position at a larger angle. If you open the cover is stopped at an arbitrary angle until the full opening angle, so the user can adjust the angle of the screen in order to adjust the angle of the screen in order to send and receive text information or to view the video provides convenience.

Claims (5)

Hinge housing 10 is inserted into any one of the body 10 or the cover 20 of the portable communication terminal and rotatably inserted into the inner space of the hinge housing 10, one end of the hinge housing (10) Protruded to the outside of the cover 20 of the mobile phone or the terminal body 10 of the mating groove 13 provided in any one of the relative parts provided to rotate in accordance with the operation of the cover 20, the hinge housing 31 ) Is provided with a hinge shaft 32 having a cam operating portion 33 and a cam portion 35 engaged with the cam operating portion 33 of the hinge shaft 32 at one end thereof. A hinge cam 34 inserted into the hinge housing 10 and installed in the hinge housing 10 to be slidably moved in a longitudinal direction by preventing rotation in the inner space of the hinge housing 10, and the hinge cam 34 to the hinge. Cover hinge length of portable communication terminal including hinge spring 36 pushing toward shaft 32 In, The cam portion 35 of the hinge cam 34 has a first stop groove 35a that seats and stops the cam operating portion 33 of the hinge cam 34 when the cover 20 is in the fully closed position A. FIG. ) And an upwardly inclined parabolic upwardly inclined surface 35b provided between the predetermined boundary position B at the fully closed position A of the cover 20 and the predetermined inclined position B at the boundary position B. A downwardly inclined surface 35c of a parabolic shape gradually descending convexly provided between the rapid opening positions C by the opening angle of, and the cam operating section 33 are seated at the rapid opening positions C to stop. Cover hinge device of the portable communication terminal, characterized in that consisting of a resting portion (35e) of a constant height provided between the second stop groove (35d) and the second stop groove (35d) in the fully open position (D). 3. The third stop groove (35f) according to claim 1, further comprising a third recess (35f) that is recessed in the fully open position (D) at which the rest part (35e) ends and stops the cam operating portion (33) in the fully open position (D). And the third stop groove (35f) is disposed to face each other with the first stop groove (35a) on the same diameter line of the cam portion (35). The cover hinge of claim 1 or 2, wherein the quick open position (C) is provided at a position of 90 ° to 100 ° from the fully closed position (A) of the cover (20). Device. The cover hinge device according to claim 1 or 2, wherein the boundary position (B) is formed at a position of 30 ° to 40 ° from a fully closed position (A) of the cover (20). 4. The cover hinge device according to claim 3, wherein the boundary position (B) is formed at a position of 30 ° to 40 ° from a fully closed position (A) of the cover (20).