KR200258170Y1 - Apparatus For Cover Hindge of a Mobile Communication Terminal - Google Patents

Abstract

The present invention relates to a cover hinge device of a mobile communication terminal.

The cover hinge device according to the present invention includes a housing (40) rotatably inserted into a hinge (23) of the cover (20) in a mobile communication terminal including a main body (10) and a cover (20); A sliding cam 50 which is inserted into the housing 40 in a non-rotable but axially movable state and whose one end surface is formed as an uneven cam surface 51 corresponding to opening and closing of the cover 20; A shaft 70 that penetrates rotatably and slidably through the sliding cam 50 and has one end rotatably fixed to the hinge portion 13 of the main body 10; A sliding pin 60 inserted at both ends of the shaft 70 so as to protrude so that the uneven cam surface 51 of the sliding cam 50 slides on the protruding portion; And a pressing spring (80) installed on the shaft (70) in the housing (40) to elastically press the sliding cam (50) toward the sliding pin (60). Characterized in that it comprises a.

The present invention provides a cover hinge device in which the hinge device is a simple sphere in which the sliding pin slides on the uneven cam surface of the sliding cam, and has a relatively simple structure while reducing the number of parts.

Description

Cover hinge device of mobile communication terminal {Apparatus For Cover Hindge of a Mobile Communication Terminal}

The present invention relates to a cover hinge device of a mobile communication terminal, and more particularly to a cover hinge device of a mobile communication terminal that can be provided with a simple structure and low cost.

Commonly used cell phones, cellular phones, cellular phones, personal communications services phones (PCS) phones, mobile telephones, personal cellular phones, wireless communication terminals, wireless application protocol phones, and personal digital assistants (PDAs). Mobile communication terminals, which are applied to various types of devices, such as Assistance terminals and IMT2000 terminals, make voice calls with other parties, carry out voice and video calls simultaneously, or text messages. It is a convenient communication tool that is always close to your daily life, such as sending and receiving, connecting to the Internet, and sending and receiving e-mail.

Such a mobile communication terminal typically includes a main body provided with an input key, and a cover that is hinged to the main body so as to be opened and closed to protect the input key.

As a conventional cover hinge device, many are known, such as Korean Utility Model Registration No. 243668 issued to the present applicant, all of which have a sliding cam having a curved cam surface (or cam portion) formed in correspondence to the opening and closing angle of the cover at one end thereof. A fixed cam formed with a symmetrical projection (a convex portion) sliding with the cam surface of the sliding cam is installed facing the shaft, and the sliding cam is installed at the cover hinge portion and the fixed cam is installed at the main hinge portion of the sliding cam. As a result, the number of parts is complicated, the structure is complicated, and the cost increases accordingly.

Therefore, an object of the present invention is to provide a cover hinge device of a mobile communication terminal, which can reduce the cost due to the small number of parts and the simple structure.

1 is a perspective view of a cover hinge device according to the present invention implemented in a general mobile phone

Figure 2 is a cross-sectional view of the cover hinge device according to the present invention, a view showing when the cover is opened

3 is an exploded perspective view of the cover hinge device according to the present invention

FIG. 4 is a front sectional view of each component of the cover hinge device shown in FIG.

5 is an exploded view of the cam profile of the cover hinge device according to the present invention;

6 is a view showing a modification of the shaft of the present invention

7 is a view showing another modification of the shaft of the present invention

8 is a view showing another modification of the shaft of the present invention

9 is a cross-sectional view showing a state in which the cover is closed in the operating state of the present invention

10 is a cross-sectional view showing an open state until the cover is opened by magnetic force of the operating state of the present invention

11 is a cross-sectional view showing a state in which the cover is completely open of the operating state of the present invention

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

10: main body 11: input key

12: Songhwa-gu 13: Hinge

13a: through hole 14: installation groove

20: cover 21: liquid crystal panel

22: receiver 23: hinge portion

30: hinge device 40: housing

41: through hole 50: sliding cam

51: cam surface 52: through hole

60: sliding pin 70: shaft

71,71a, 71b: shaft portion 72,72a, 72b: head portion

73: hole 74: through hole

75: groove 80: pressure spring

81: spring guide 90: fixing pin

100: stop ring 111: axis

112: small head 113: insertion hole

114, 115, 122, 123: through hole 121: shaft hole

a: steep slope b: intermediate slope

c: end slope surface d: land surface

Cover hinge device of a mobile communication terminal according to the present invention for realizing this object,

A mobile communication terminal comprising a main body and a cover, comprising: a housing rotatably inserted into a hinge portion of the cover; A sliding cam which is inserted into the housing in a non-rotable but axially movable state and whose one end surface is formed as an uneven cam surface corresponding to opening and closing of the cover; A shaft rotatably penetrating and slidingly passing through the sliding cam, and one end of which is not rotatably fixed to the hinge portion of the main body; Sliding pins which are inserted at both sides of the shaft on the shaft so as to protrude so that the uneven cam surface of the sliding cam slides on the protruding portion; And a pressing spring installed on the shaft in the housing to elastically press the sliding cam toward the sliding pin. Characterized in that comprises a.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The terminal illustrated in the drawings illustrates a form of a terminal called a mobile phone, a mobile phone, or a mobile phone. However, the terminal may be applied to various types of mobile communication terminals described at the beginning of the present specification in the same technical category. Hereinafter, all are referred to as mobile communication terminals.

The mobile communication terminal shown in FIG. 1 is a typical clamshell mobile having an input key 11 and a telephone outlet 12 on a main body 10 and a liquid crystal panel 21 and a receiver 22 on a cover 20. A communication terminal is illustrated.

Reference numeral 30 denotes a hinge device of the present invention, the hinge device 30 is one side is coupled to the hinge portion 13 of the main body 10, one side is inserted into the hinge portion 23 of the cover 20 do.

In the hinge portion 23 of the cover 20 opposite to the hinge device 30, a separate hinge shaft 2 is provided to be coupled to the hinge portion 13 of the main body 10. This hinge shaft 2 is supported by the spring 5 between the snap ring 3 and the support plate 4 as shown in Figure 2 is rotatably coupled to the hinge portion 13 of the main body 10. . These hinge shafts 2 and related elements do not characterize the present invention, and may be configured in any manner other than the illustrated hinge shaft 2 type.

Again, the hinge device 30 of the present invention will be described.

As shown in FIGS. 1 to 4, the hinge device 30 of the present invention includes a housing 40 that is rotatably inserted into the hinge portion 23 of the cover 20, and a non-rotationable inside the housing 40. The sliding cam 50, which is inserted into one axially movable state and has one end surface formed as an uneven cam surface 51 corresponding to opening and closing of the cover 20, and penetrates rotatably and slidably through the sliding cam 50. In addition, a sliding pin 60 sliding along the concave-convex cam surface 51 of the sliding cam 50 is provided in the middle thereof, and one end of the sliding cam 50 is fixed to the hinge portion 13 of the main body 10 without rotation. And a pressing spring 80 installed to elastically press the sliding cam 50 toward the sliding pin 60 on the shaft 70 in the housing 40. It is. In the example shown, the pressure spring 80 is supported by a spring guide 81 in the housing 40.

The housing 40 is formed in a polygonal cylindrical shape so that the cover 40 can be fixed to the cover 20 in a non-rotable state, and one side of the housing 40 has a through hole 41 through which the shaft 70 penetrates. It is made of an open structure.

The sliding cam 50 also has a cross-sectional shape that matches the cross-sectional shape of the housing 40, and a through hole 52 through which the shaft 70 is rotatably and slidably formed is formed at the center thereof.

The shaft 70 is composed of a shaft portion 71 and the head portion (72). The shaft portion 71 of the shaft 70 is rotatably coupled to the through hole 52 of the sliding cam 50, and a hole 73 is formed in the middle of the shaft 70. 73, a sliding pin 60 sliding with the uneven cam surface 51 of the sliding cam 50 is fixed through. And the through hole 74 is formed in the head portion 72 of the shaft 70, the head portion 72 is inserted into the insertion hole 14 formed in the hinge portion 13 of the main body 10, the hinge portion The fixing pin 90 penetrates and fixes the through hole 13a and the through hole 74 of the head 72 of (13).

The pressure spring 80 is installed on the shaft portion 71 of the shaft 70 in a state interposed between the inner end of the housing 40 and the sliding cam 50. Therefore, the sliding cam 50 is in close contact with the sliding pin 60 by the elasticity of the pressure spring (80).

In addition, in the present invention, a recess 75 is formed in the shaft portion 71 of the shaft 70, and the recess 75 is coupled to the recess 75 to prevent axial movement of the housing 40. Doing.

On the other hand, the uneven cam surface 51 of the sliding cam 50 is composed of two independent cam surface having the same shape on both sides of the middle, correspondingly the sliding pin 60 also protrudes symmetrically on both sides of the shaft Take form. Since the opening and closing angle of the terminal cover 20 does not normally exceed 180 degrees, the sliding pin 60 is formed between the two uneven parts while dividing the cross section of the cam surface 51 in half and forming the same uneven parts on both sides of the divided part. When the cover 20 is opened and closed, the cam surfaces 51 and the sliding pins 60 on both sides slide in the same shape.

5 is a view illustrating a cam profile shape of the cam surface 51 by developing the cam surface 51. As shown in FIG. 5, the sliding pin 60 is a section corresponding to a closed state of the cover 20. This magnetic force is supported so that relative rotation is not made, and the user must lift the cover 20 to overcome the adhesion by the combination of the pressing force of the pressure spring 80 and the inclination of the cam surface 51 in this section. An upward steep steep slope (a) is formed to open 20. Extending from the distal end of the steep slope (a) to form a vertex (P ₂ ) of the cam profile, and beyond the vertex (P ₂ ) thereof, the cover (20) is gently opened by the bearing force of the pressure spring (80). A downwardly inclined intermediate slope b is formed. From the end of the intermediate inclined surface (b) is inclined downward more sharply than the intermediate inclined surface (b) corresponding to the time when the cover 20 is fully opened, and the end inclined surface having a gentle inclination than the steep inclined surface (a) (c) is formed. At the end of the end slope surface c, a land surface d having a predetermined width is formed at the time when the cover 20 is fully opened as the lowermost surface of the cam profile. .

6 to 8 show variations of the shaft 70 described above.

First, as illustrated in FIG. 6 is employed in the entire drawing attached to the present specification, the shaft 70 includes the shaft portion 71 and the head 72 integrally, and the shaft portion 71 slides on the shaft portion 71. A hole 73 for coupling the pin 60 is formed, and a through hole 74 is formed in the head portion 72. The head portion 72 is inserted into the hinge portion 13 of the main body 10. Is inserted into the fixing pin 90 to the through hole 74 has a structure to be fixed. Preferably, the shaft 70 is made of metal.

The shaft 70 shown in FIG. 7 has a structure divided into a shaft portion 71a and a head portion 72a, and the shaft portion 71a has a small head 112 integrally at the end of the shaft 111 again. Formed structure. The head 72a is formed with an insertion hole 113 into which the small head 112 is inserted, and through holes 114 and 115 are formed in the head 72a and the small head 112. Accordingly, the small head 112 of the shaft portion 71a is coupled to the insertion hole 113 of the head portion 72a so that the head portion 72a is inserted into the hinge portion 13 of the main body 10. Next, the fixing pin 90 penetrates through the through holes 114 and 115 to be fixed. Preferably, the shaft portion 71a is made of a metal material, and the head portion 72a is made of a plastic material.

The shaft 70 shown in FIG. 8 is divided into a shaft portion 71b and a head portion 72b, and a shaft hole 121 into which the shaft portion 71b is inserted is formed at the center of the head portion 72b. The through holes 122 and 123 are formed in the shaft portion 71b and the head portion 72b, and the shaft portion 71b is inserted into the shaft hole 121 of the head portion 72b. It is made of a structure to pass through the fixing portion 90 to the hinge portion 13 to be fixed. The shaft portion 71b is made of metal, and the head 72b is made of plastic.

9 to 11 is a step-by-step showing the operation of the cover hinge device 30 of the mobile communication terminal of the present invention made as described above, the figure of the upper portion is shown in cross-section by extracting only the cover hinge device 30, The lower figure is a figure which shows the contact position with the sliding pin 60 as the cover 20 opens in the state which expanded the cam surface 51 of the sliding cam 50. As shown in FIG.

Prior to the description, the sliding cam 50 is rotatably inserted into the housing 40 at the same time and is slidably inserted, and the housing 40 is inserted into the terminal cover 20 in a rotatable manner while being inserted into the shaft 70. It is rotatably coupled. Therefore, when the cover 20 rotates, the housing 40 and the sliding cam 50 rotate integrally, and the sliding cam 50 can move only in the axial direction within the housing 40. In addition, since the shaft 70 is fixed to the hinge portion 13 of the main body 10, the sliding pin 60 coupled thereto is also impossible to rotate and move.

FIG. 9 shows a state in which the cover 20 is closed. When the cover 20 of the mobile communication terminal is in a state, about 1 / of the overall height of the cam surface 51 of the sliding cam 50 is formed by the sliding pin 60. Contact the steep slope (a) at the position (P ₀ ) corresponding to 2. Therefore, the sliding cam 50 is slightly rotated from the position where the sliding pin 60 is coupled to the land surface d of the cam surface 51, so that the sliding cam 50 is rotated as much as the sliding cam 50 is rotated. In the 40, slightly away from the sliding pin 60, the pressure spring (80) is also pressed by the sliding cam 50 in the compressed state by that much. As a result, the sliding cam 50 and the sliding pin 60 are initially set to have a constant relative angular displacement.

In this state, the cover 20 is not opened by magnetic force without intentionally applying force to the cover 20 by the elastic force of the pressure spring 80 and the inclination of the steep slope a.

Figure 10 is a cross-sectional view showing an open state to the point where the cover 20 can be automatically opened, the cover 20 is closed as described above, the user lifts the cover 20 for a call When rotating, the elastic force of the pressing spring 80 is overcome, and the housing 40 and the sliding cam 50 rotate integrally. As a result, the cam surface 51 rotates so that the steep slope a of the cam surface 51 slides. By pushing 60, the sliding cam 50 slides further away from the sliding pin 60 by the inclination height of the steep slope a.

If the cover 20 is released before the sliding pin 60 reaches the profile vertex P ₂ of the cam face 51, for example, at the point P ₁ , the elastic force and steep slope of the pressure spring 80 are released. The sliding cam 50 is rotated back to the initial closed position P ₀ by the combined bearing force of the surface a. The return rotational force gives a user a fresh feeling of operation when the cover 20 is opened.

When the cover 20 is rotated until the sliding pin 60 exceeds the profile vertex P ₂ of the cam surface 51, the sliding pin 60 is in contact with the downwardly inclined intermediate inclined surface b. The force that resists the rotation of the) disappears instantaneously, and the elastic force of the pressure spring 80 that acts as the force that resists the rotation of the cover 20 is because the intermediate inclined surface (b) is inclined downward and the sliding cam (50). ) Acts as a force to rotate the cover 20 in the opening direction so that the cover 20 is automatically opened.

As described above, just before the sliding pin 60 coincides with the vertex P _{2 of} the sliding cam 50, the sliding cam 50 is moved farthest from the sliding pin 60 on the shaft 70. Since the pressure spring 80 is also compressed the most, its elasticity is also the greatest, and the resistance to open the cover 20 is also felt the greatest.

In addition, in a state where the sliding pin 60 can automatically rotate through the vertex P ₂ of the sliding cam 50, the intermediate inclined surface b of the sliding cam 50 is very gentle. In addition to having an inclination, as the rotation proceeds, the sliding cam 50 moves to the sliding pin 60 again, so that the resilience of the pressure spring 80 gradually decreases, thereby greatly rotating the cover 20. Can be performed smoothly.

Next, when the cover 20 is almost completely opened, that is, when the housing 40 and the sliding cam 50 are rotated further, the sliding pin 60 reaches the end inclined surface c of the sliding cam 50. At this time, since the elastic force of the pressure spring 80 is almost reduced or the end slope surface c is inclined more sharply than the intermediate slope surface b, the elastic force of the pressure spring 80 reduced by the inclination thereof is supplemented. . Next, when the position of the sliding pin 60 is further rotated past the end inclined surface (c) to reach the land surface (d), the cover 20 is completely opened.

Referring to FIG. 11 again, the process of closing the cover 20 will be described.

When the user closes the cover 20 by hand to end the use of the mobile communication terminal, the housing surface 40 and the sliding cam 50 are rotated in the reverse direction in the above-mentioned opening, so that the land surface d of the cam surface 51 The sliding pin 60 located in the step C) rises up the end slope c and the intermediate slope b.

Therefore, as the cover 20 is gradually closed, the sliding cam 50 moves again in a direction away from the sliding pin 60. Accordingly, the pressure spring 80 is gradually compressed, and the force for compressing the pressure spring 80 is By acting as a resistance to close the cover 20 can give a fresh feeling of operation to the user's finger closing the cover 20.

Next, when the cover is further rotated so that the sliding pin 60 passes through the vertex P ₂ of the cam surface 51, the following protrusion meets the steep inclined surface a. As described above, the cover 20 is automatically closed by the support force in which the inclination of the steep slope a and the elastic force of the pressure spring 80 are combined.

According to the preferred direction of the present invention, the point where the cover 20 is automatically closed, that is, the position of the vertex P ₂ of the steep slope a, is approximately 28 to 32 degrees from the first point at which the cover 20 is closed. Preferably set to a 30 degree angle open point. Therefore, when the cover 20 is pulled out to open the cover 20 before opening the cover 20 or more, the cover 20 automatically closes to the initial position, and when opened more than 30 degrees, automatically without external help. Will be opened.

As described above, according to the cover hinge device of the mobile communication terminal according to the present invention, the hinge device is a simple sphere in which the sliding pin slides on the concave-convex cam surface of the sliding cam. It is possible to provide a cover hinge device that can be lowered.

Claims (8)

In the mobile communication terminal comprising a main body 10 and a cover 20, A housing (40) rotatably inserted into the hinge portion (23) of the cover (20); A sliding cam 50 which is inserted into the housing 40 in a non-rotable but axially movable state and whose one end surface is formed as an uneven cam surface 51 corresponding to opening and closing of the cover 20; A shaft 70 that penetrates rotatably and slidably through the sliding cam 50 and has one end rotatably fixed to the hinge portion 13 of the main body 10; A sliding pin 60 inserted at both ends of the shaft 70 so as to protrude so that the uneven cam surface 51 of the sliding cam 50 slides on the protruding portion; And A pressure spring (80) installed on the shaft (70) in the housing (40) to elastically press the sliding cam (50) toward the sliding pin (60); Cover hinge device of a mobile communication terminal, characterized in that comprises a. In the mobile communication terminal comprising a main body 10 and a cover 20, A housing 40 having a cross section having a shape of a polygonal tube, the housing 40 being rotatably inserted into the hinge portion 23 of the cover 20; A sliding cam 50 which is inserted into the housing 40 in a non-rotable but axially movable state and whose one end surface is formed as an uneven cam surface 51 corresponding to opening and closing of the cover 20; A shaft 70 that penetrates rotatably and slidably through the sliding cam 50 and has one end rotatably fixed to the hinge portion 13 of the main body 10; A sliding pin 60 inserted at both ends of the shaft 70 so as to protrude so that the uneven cam surface 51 of the sliding cam 50 slides on the protruding portion; A pressure spring (80) installed to elastically press the sliding cam (50) toward the sliding pin (60) on the shaft portion (71) of the shaft (70) in the housing (40); And A stop ring (100) coupled to the shaft portion (71) to immobilize the housing (40) against the shaft portion (71) of the shaft (70); Cover hinge device of a mobile communication terminal, characterized in that comprises a. The method according to claim 1 or 2, The shaft 70 is made of a metal material, and the shaft portion 71 and the head portion 72 are integrally formed so that the head portion 72 rotates by the fixing pin 90 on the hinge portion 13 of the main body 10. And a cover hinge device of a mobile communication terminal, which is immovably fixed. The method according to claim 1 or 2, The shaft 70 is divided into a shaft portion 71a and a head portion 72a, but the shaft portion 71a has a small head 112 formed at the end of the shaft 111, and the center of the head portion 72a. An insertion hole 113 into which the small head 112 is inserted is formed, and the small head 112 of the shaft portion 71a is inserted into the insertion hole 113 of the head portion 72a. Cover hinge device of a mobile communication terminal, characterized in that the fixing by passing through the fixing pin (90) to the hinge portion (13). The method of claim 4, wherein The shaft portion (71a) is made of a metal material, the head portion (72a) is a cover hinge device of a mobile communication terminal, characterized in that made of a plastic material. The method according to claim 1 or 2, The shaft 70 is divided into two parts, the shaft portion 71b and the head portion 72b. A shaft hole 121 through which the shaft portion 71b penetrates is formed at the center of the head portion 72b. The cover hinge device of the mobile communication terminal, characterized in that the shaft portion (71b) is inserted into the shaft hole (121) of the (72b) and penetrated by the fixing pin (90) to the hinge portion (13) of the main body (10). The method of claim 6, The shaft portion (71b) is made of a metal material, the head portion (72b) is a cover hinge device of a mobile communication terminal, characterized in that made of a plastic material. The method according to claim 1 or 2, The cam profile formed by the cam surface 51 of the sliding cam 50, The cover 20 is a section corresponding to the closed state, the sliding pin 60 is supported so that the relative rotation is not made by the magnetic force, the user lifts the cover 20 to the pressure spring 80 and this section A steep upward slope (a), in which the cover 20 is opened only by overcoming the supporting force by the combination of the inclination of the surface; At the distal end of the steep slope (a) extends to form a peak (P ₂ ) of the cam profile, and beyond the peak (P ₂ ) thereof, the cover (20) is gently opened by the bearing force of the pressure spring (80). A medium slope inclined downward (b), An inclined surface inclined downward more rapidly than the intermediate inclined surface (b) from the end of the intermediate inclined surface (b) and having a gentler inclination than the steep inclined surface (a) in response to the time when the cover 20 is fully opened. c) and, The sliding pin 60 is inserted when the cover 20 is fully opened as the lowermost surface of the cam profile that maintains a constant width and the start point of the steep inclined surface a of the adjacent cam surface at the end of the distal sloped surface c. Cover hinge device of a mobile communication terminal, characterized in that consisting of the land surface (d) which is in contact.