KR19990026978U - Opening angle adjusting device of communication terminal cover - Google Patents

Abstract

The present invention relates to a control device for opening and closing angle of a cover for a communication terminal, and more particularly, by installing the rotating projections on one side of the cam on both sides so that the cam can be stably operated during the rotation operation according to the angle adjustment of the cover. The operation is made smoothly.

The present invention for this purpose is a cylindrical holder (3) is pressed into both sides of the cover (2) and rotated together with the cover (2), and a hinge shaft (4) inserted into the holder and fixed to both sides of the lower end of the main body (1) And a cam 5 coupled to the hinge shaft and rotated together with the holder 3, a spring 6 providing a return force to the cam, and a component in the holder 3 to be detached. Consisting of a cap 7 enclosing a holder; The protrusion 51 is formed at an appropriate portion of the inner surface of the cam 5, and another protrusion 52 is formed at a point symmetrical with the protrusion, and the protrusion is formed on the outer surface of the hinge shaft 4. 51 and 52 form guide grooves 40 to which the guides 40 are guided, and a plurality of fixing grooves 401 and 402 can be simultaneously inserted into the protrusions 51 and 52 at appropriate positions on the guide grooves. 403 and 404 are formed so that the projections 51 and 52 formed on the cam 5 are inserted into the fixing grooves while being guided along the guide grooves 40 so that the cover can be fixed at an appropriate angle. will be.

Description

Opening angle adjusting device of communication terminal cover

The present invention relates to a communication terminal, and more particularly to a device for adjusting the opening and closing angle of the cover for the communication terminal.

In general, a communication terminal refers to a personal mobile phone, a portable information terminal, a notebook, and the like, which are widely used in recent years, and as the use thereof expands, functional and structural improvements are continuously made.

As one of the structural improvements, the opening and closing angle adjustment device of the cover, which is applied to a flip type mobile phone, an electronic notebook, a notebook, and the like, is intended to facilitate the user's convenience when making a call (mobile phone) or searching for information (electronic notebook, notebook). In order to fix the cover at an angle, a technique has been put into practice.

However, it is inconvenient to use the information terminal inputting the information search by the touch pan so that the cover can be opened and closed only at 135 °. The product has been released to improve the convenience by controlling the opening and closing angle in multiple stages.

1 is a side view of a flip-type mobile phone that can adjust the cover angle in two stages as described above, wherein the cover 2 is to adjust the angle from the main body 1 to about 135 ° or 190 ° according to the user's convenience have.

The configuration of the device for adjusting the angle of the cover 2 is a cylindrical holder (3) forming an outer shape as shown in Figure 2a to 2b, and is inserted into the holder and fixed to both sides of the lower end of the main body (1) A hinge shaft 4 having a guide groove 40 formed on an inner surface thereof, a cam 5 coupled to the hinge shaft and having a protrusion 50 formed on a surface facing the guide groove 40, and the cam And a cap 7 for enclosing the holder to prevent the hinge shaft, the cam and the spring from being detached from the holder 3.

On the other hand, the holder 3 is press-fit and fixed to both sides of the lower end of the cover 2, the cam 5 is fixed to the holder 3, the holder 3 and the cam 5 as the cover 2 rotates It rotates about the hinge axis 4 simultaneously.

In addition, as shown in Figure 3a to 3c on the guide groove 40 is formed with three fixing grooves to give a fixing force to the cover 2 as the projection 50 is inserted into the first, second, third fixing grooves It is referred to as (41) (42) (43).

In the above, the first fixing groove 41 is a groove formed to provide a closing force to the cover 2, and the forming position thereof is located at the upper part of the vertical center line when the hinge shaft 4 is viewed from the side. The second fixing groove 42 is located at about 135 ° counterclockwise from the first fixing groove 41, and the third fixing groove 43 is the second fixing groove 42. It is located at about 55 ° counterclockwise from and at 190 ° from the first fixing groove 41.

Referring to Figures 3a to 3c the operation of the opening and closing angle control device of the cover configured as described above are as follows.

3A shows a side view of the opening / closing angle adjusting device in a state before opening the cover 2 from the main body 1, that is, the cover is closed, wherein the protrusions 50 are formed in the first fixing groove 41. Since the inserted state and the cover 2 is closed, the cover angle at this time is 0 °.

3B shows a state in which the cover 2 is opened at an angle of about 135 ° from the position of FIG. 3A, in which case an artificial force is applied to the cover 2 to rotate the cover counterclockwise in the drawing to show the cam 5. ) Is rotated and the protrusion 50 formed on the cam is guided along the guide groove 40 while leaving the first fixing groove 41 to be inserted into the second fixing groove 42.

The opening and closing angle of the cover becomes a form that can be called in the flip-type mobile phone, the information terminal is also available, but the opening and closing angle that is inconvenient to use on the desk to search and input information.

FIG. 3C illustrates a state in which the cover 2 is opened at a larger angle (about 190 °) in order to alleviate the inconvenience, and in this case, the cover is applied by applying an artificial force to the cover 2 from the position of FIG. 3B. When rotated counterclockwise in the drawing, the cam 5 is rotated and at the same time, the projection 50 formed in the cam is guided along the guide groove 40 while leaving the second fixing groove 42 so that the third fixing groove ( 43) is inserted into the state can be used to adjust the cover 2 to 135 ° or 190 ° according to the convenience of use.

In the guide groove 40, as shown in FIG. 4, the fixing grooves 41, 42 and 43 are formed at the corresponding depth H so that the protrusions 50 can be inserted, and the fixing grooves and the fixing grooves. Since the projection 50 is a portion that is guided is formed with a shallow depth (h) compared to each fixing groove.

However, since the cover angle adjusting device has only one protrusion 50 formed at a position eccentric from the center of the cam 5, the protrusion at the cam 5 is changed as shown in FIG. 5 according to the change in the depth of the guide groove 40. The cam is distorted while being pushed inward compared to the portion where the portion 50 is not formed is formed.

That is, when the protrusion 50 is inserted into any one of the first, second, and third fixing grooves 41, 42, 43, the depth of the groove and the size of the protrusion coincide with each other, so that the cam 5 has a holder ( 3) In the normal position within the projection 50, when the projection 50 moves between the fixed groove and the fixed groove, the groove depth of the portion is shallow compared to the fixed groove, the cam 5 is in an unbalanced state in the holder (3) .

Accordingly, since the outer circumferential surface of the cam 5 is in contact with the inner circumferential surface of the holder to cause friction, a problem occurs that the opening and closing operation of the cover 2 does not occur or breaks, thereby lowering the reliability of the product.

The present invention has been made to solve the conventional problems as described above, the purpose is to smoothly operate the opening and closing of the cover and the opening and closing angle of the cover.

The present invention for achieving the above object is a cylindrical holder that is pressed into both sides of the cover and rotated with the cover, a hinge shaft inserted into the holder fixed to both sides of the lower end of the main body, coupled to the hinge shaft and the holder and A cam rotated together, a spring providing a return force to the cam, and a cap enclosing the holder to prevent detachment of components in the holder; The protrusion is formed on the inner side of the cam and an additional protrusion is formed at a point symmetrical with the protrusion, and the guide groove is formed on the outer side of the hinge shaft to guide the protrusion. Forming a plurality of fixing grooves so that the projections can be inserted at the appropriate position on the top at the same time, so that the cover is fixed at the proper angle as the projection formed in the cam is inserted into the fixing groove while guiding along the guide groove It is to provide an opening and closing angle control device of the communication terminal cover.

1 is a side view of a personal mobile phone to which the conventional cover opening and closing angle adjustment device is adjustable when opening and closing

Figure 2a is a front cross-sectional view of separating part A of FIG.

Figure 2b is a cross-sectional view of the coupling state of Figure 2a

Figure 3a is a side cross-sectional view of the opening and closing angle adjustment device when the cover is closed

Figure 3b is a side cross-sectional view of the opening and closing angle adjustment device when the cover is opened at 135 °

Figure 3c is a side cross-sectional view of the opening and closing angle adjustment device when the cover is opened to 190 °

Figure 4 is a schematic view showing the shape of the guide groove

Figure 5 is a front sectional view of the opening and closing device showing the state of the cam when the projection is located between the fixed groove and the fixed groove;

6 is a front sectional view of a state in which the opening and closing angle adjustment device of the present invention is removed

7 is a cross-sectional view of the coupling state of FIG.

8 is a perspective view showing an extract of the hinge axis of the present invention

Figure 9 is a schematic view showing a guide groove shape of the present invention

Figure 10a is a side cross-sectional view of the opening and closing angle adjustment device when the cover is closed

Figure 10b is a side cross-sectional view of the opening and closing angle adjustment device when the cover is opened at 135 °

Explanation of symbols for main parts of the drawings

5: Cam

40: guide groove

51, 52: 1st, 2nd projection

401, 402, 403, 404: 1st, 2, 3, 4 fixing groove

Hereinafter, the configuration and operation of the apparatus for adjusting the opening and closing angle of the cover for the communication terminal will be described in detail with reference to FIGS. 6 and 7.

First, as described above, the cover angle adjusting device has a cylindrical holder 3 and a hinge shaft 4 inserted into the holder and fitted to both sides of the lower end of the main body 1, and having a circular guide groove 40 formed therein. And a cam 5 coupled with the hinge shaft and having protrusions on a surface facing the guide groove 40, a spring 6 providing a return force to the cam, the hinge shaft, the cam and the spring. It is comprised by the cap 7 which seals a holder in order to prevent it from being detached from this holder 3.

In the above configuration, the protrusions formed on the cam 5 are formed toward the guide grooves 40, and are formed one by one in a direction facing each other with respect to the center point of the cam 5. 51) (52).

Since the first and second protrusions 51 and 52 are formed in a symmetrical direction from the center of the cam 5, the first protrusion 51 has an origin of 0 ° as the two protrusions are always maintained at 180 °. The origin of the second projection 52 is 180 degrees.

In addition, a groove is formed on the guide groove 40 in consideration of the protrusion formation position so that the pair of protrusions 51 and 52 can be inserted.

The specific positions are located at 135 °, 180 °, 315 °, and 350 °, respectively, as shown in FIGS. 8 to 9, and the first and second fixing grooves 401 and 402 are formed in the grooves formed at the 135 ° and 180 °, respectively. If the grooves formed at 315 ° and 350 ° are referred to as the third and fourth fixing grooves 403 and 404, the first protrusions 51 are inserted into the first and second fixing grooves 401 and 402. The second protrusions 52 are inserted into the 3 and 4 fixing grooves 403 and 404.

The operation of the cover angle adjusting device configured as described above will be described with reference to FIGS. 9A to 9C.

First, FIG. 10A illustrates the positions of the first and second protrusions 51 and 52 when the cover 2 is closed. In this case, the first protrusion 51 is the fourth fixing groove of the guide groove 40. A part is inserted into the 404, and at the same time, the second protrusion 52 is inserted into the second fixing groove 402 of the guide groove 40.

Accordingly, the angle of the first protrusion 51 at this time is 0 °, and the angle of the second protrusion 52 formed at a position symmetrical to this is 180 °.

FIG. 10B illustrates the positions of the first and second protrusions 51 and 52 when the cover 2 is opened. In this case, the first protrusion 51 is rotated counterclockwise in the drawing to guide the groove 40. Is inserted into the first fixing groove 401, and at the same time, the second projection 52 is inserted into the third fixing groove 403 of the guide groove 40.

At this time, since the opening angle of the cover 2 is about 135 °, the moving angle of the first protrusion 51 and the moving angle of the second protrusion 52 are 135 ° (because of 0 ° + 135 °) and 315 °, respectively. ∵ 108 ° + 135 ° = 315 °).

On the other hand, as described above, since the closing angle of the cover 2 is substantially 0 °, the position of the fourth fixing groove 404 should also be 0 ° correspondingly, but in this case, the closing force of the cover 2 is weak, so Since the opening problem may occur, the fourth fixing groove 404 is located at 350 ° (or −10 °).

The reason for this is that when the cover 2 is located at 0 ° (when it is closed), since the position of the fourth fixing groove 404 is located at 350 °, as shown in FIG. 9, the first protrusion 51 is completely fourth. Since the cover 2 is hung on the inclined surface of the first fixing groove without being inserted into the fixing groove 404, the cover 2 is subjected to the elastic force of the spring 6 by a 10 ° deviation so that the cover can be prevented from being opened arbitrarily. do.

In addition, the center of the guide groove 40 between the fourth fixing groove 404 and the first fixing groove 401, that is, the position of the first projection 51 when the cover 2 is closed by 0 ° In this case, a groove of about 72.5 ° is shallowest to form a top dead center, and from this point, the depth of the groove gradually increases toward the first fixing groove 401 and the fourth fixing groove 404. In the first and fourth fixing grooves 401 and 404, the depth of the grooves is deepest.

Similarly, the groove between the second and third fixing grooves 402 and 403 has the same shape as above.

Accordingly, the first protrusion 51 covers only the top dead center located between the first and fourth fixing grooves 401 and 404 or the second and third fixing grooves 402 and 403 outside the fourth fixing groove 404. If (2) is opened manually, a downward curve is formed behind the first fixing groove 401 and the third fixing groove 403, so that the first protrusion 51 naturally slides into the first fixing groove and the third fixing groove. The cover 2 is fixed at 135 ° as it is inserted into the bottom.

Thus, two projections are formed at corresponding positions from the center of the cam 5, so that the cam 5 in the holder 3 may be inserted into the fixing groove or even between the fixing groove and the fixing groove. The balance is maintained, the opening and closing operation of the cover (2) is made smoothly.

The opening and closing angle adjusting device of the cover for the communication terminal of the present invention as described above is formed so that the projections on one surface of the cam to face each other when the cam is operated stably during the angle adjustment of the cover and the smooth opening and closing operation of the cover and As a result, the indirect effect of improving the reliability of the product can be obtained.

Claims (3)

A cylindrical holder press-fitted on both sides of the cover and rotated with the cover, a hinge shaft inserted into the holder and fixed to both sides of the lower end of the body, a cam coupled to the hinge shaft and rotated together with the holder, and returned to the cam. A spring for providing a force and a cap enclosing the holder to prevent the components in the holder from detaching; While forming a projection at the appropriate portion of the inner surface of the cam and forming another projection at a point symmetrical with the projection, On the outer surface of the hinge shaft to form a guide groove for guiding the projections and a plurality of fixing grooves to be inserted at the appropriate position on the guide groove at the same time to form a projection formed on the cam along the guide groove Opening angle control device of the cover for the communication terminal, characterized in that the cover is fixed at an appropriate angle as it is inserted into the fixing groove during the guiding. The method of claim 1, When the hinge axis is viewed from the side when the cover is closed, and the position immediately above the center point is 0 °, the protrusions correspond to 135 °, 180 °, 315 °, and 350 ° counterclockwise from the 0 ° position, respectively. Opening angle control device of the cover for a communication terminal, characterized in that the fixing groove of the size is formed. The method according to claim 1 or 2, Opening angle adjustment device of the cover for the communication terminal, characterized in that the shallowest portion of the guide groove is located between 72 ~ 73 ° and 252 ~ 253 °.