KR100709742B1 - Rotational connecting device - Google Patents

Abstract

The present invention includes a first member fixed to the support portion and a second member fixedly connected to the rotating portion, the second member is elastically accommodated in the first member to enable the pivoting function of the rotating portion to enable the rotation It relates to a rotary connection device. The present invention provides a rotary connection device for connecting a rotating part and a supporting part and rotating the rotating part by a predetermined angle, comprising: a first member fixedly connected to the supporting part; And a second member accommodated in the first member so that at least a portion thereof is elastically extended to contact the inner surface of the first member and is fixedly connected to the rotating unit.

Rotating, Communication Terminal, Pivot, Hinge

Description

Rotational Connecting Device

1 is a view showing a pivot swing communication terminal and the rotary connection device of the present invention installed therein.

2 is an exploded view of the rotary connection device according to the first embodiment of the present invention.

3 is another exploded view of the rotary connection device according to the first embodiment of the present invention.

4 is a perspective view of a rotary connection device according to a first embodiment of the present invention.

5 is an operating state diagram of the rotary connection device according to a first embodiment of the present invention.

Figure 6 is a side cross-sectional view of a rotary connection device according to a first embodiment of the present invention.

7 is an exploded view of the rotary connection device according to the second embodiment of the present invention.

8 is another exploded view of the rotary connection device according to a second embodiment of the present invention.

9 is an operating state diagram of the rotary connection device according to a second embodiment of the present invention.

Figure 10 is a side cross-sectional view of a rotary connection device according to a second embodiment of the present invention.

11 is a cross-sectional view of a conventional liquid crystal display rotating apparatus.

Explanation of symbols on the main parts of the drawings

10: second member 11: contact portion

13: base 14: first member

15: insert 16: cover

21: guide protrusion 31: guide slot

32: circumferential guide protrusion 41: internal space

45: axis of rotation

The present invention relates to a rotary connection device, and more particularly, a first member fixed to the support portion and a second member fixedly connected to the rotating portion, the second member is elastically accommodated in the first member can rotate It relates to a rotary connection device to enable the pivot rotation function of the rotating unit.

Recently, structures for rotating or opening and closing the display screen in various devices such as personal mobile communication terminals and monitors have been proposed. In particular, in the conventional method of opening up and down the liquid crystal display of the mobile communication terminal, a terminal having a pivot function for rotating the opening 90 degrees on the same plane as the support portion on which the keypad is located has emerged.

In the related art, the pivot hinge of FIG. 11 is used to perform such a pivot function. This relates to Korean Patent Laid-Open Publication No. 2004-105629, "Display Rotation Device for Communication Terminal", which is a display rotation apparatus of a communication terminal for rotatably coupling a display to a support that is hinged from a main body of a communication terminal, wherein the support portion A fixed first fixing part 200; A rotatable portion coupled to the display while being rotatably coupled to the first fixing portion; A second fixing part coupled to the first fixing part to rotatably couple the rotating part to the first fixing part; A cam 312 formed in the rotating part and configured to contact the first fixing part to limit a rotation angle of the rotating part; And braking parts 410 and 420 for applying an elastic force to the cam to stop the rotating part with a predetermined braking force in an initial state and in a rotated state.

Such a rotating device has a large number of parts to be assembled and has a complicated shape. In addition, the guide rib 412 for fixing the position of the cam 312 is formed only in the vertical direction, there is a problem that there is a functional limitation that can only reciprocating 90 degrees. In addition, there is a problem in that a bearing force capable of supporting a load applied to the cam is expressed only by the force of the spring, thereby failing to obtain sufficient bearing force.

The present invention is to solve the above problems, it is an object of the present invention to provide a rotary connection device that can be formed in a simpler structure than the prior art to lower the manufacturing cost, and increase the operating performance.

In addition, an object of the present invention is to provide a rotary connection device capable of rotating more than 360 degrees without limitation, and to provide a rotary connection device having a support structure that can exhibit a stronger bearing force.

As a constituent means for achieving the above object, the present invention provides a rotary connection device for connecting the rotary part and the support and to rotate the rotary part by a predetermined angle, the first member fixedly connected to the support; And a second member accommodated in the first member so that at least a portion thereof is elastically extended to contact the inner surface of the first member and is fixedly connected to the rotating unit.

Preferably, the first member is formed in a concave shape of a polygon and includes an inner space portion formed with a through hole in the center, the second member is formed with a rotating shaft inserted into the through hole formed in the inner space portion of the first member Is accommodated in. More preferably, the inner space portion of the first member is substantially square in shape.

Also preferably, the second member may include a disc-shaped base; And a contact portion connected to the inner space portion of the first member so as to be elastically contracted and expanded in a diagonal direction and formed to contact an edge of the inner space portion of the first member. In addition, the contact portion may be formed to contact the side adjacent to the edge (edge) of the inner space portion of the first member. In addition, a guide slot may be formed in the base in the diagonal direction of the inner space of the first member to guide the diagonal movement of the contact portion, and the contact portion may be formed to guide the insertion protrusion to move.

In addition, the contact portion is provided with a pair in the opposite direction to each other, it can be elastically connected to the base or other contact member through a spring. In addition, the contact portion has a triangular shape having a substantially right contact portion that can contact an edge of the inner space portion of the first member.

In addition, a circumferential guide protrusion may be formed at a circumferential circumference of a surface of the base to which the contact part is connected to contact the circumferential surface of the contact part except the front part of the contact part. In addition, the sides between the edge (edge) of the inner space portion of the first member is preferably formed in a curved shape toward the outside. The outer periphery of the base may be arranged to contact a curved portion of the corner of the inner space.

Also preferably, it may include a cover covering the outer circumferential portion of the second member and the circumferential portion of the first member, and an insert inserted between the cover and the second member to reduce frictional force due to rotation. In addition, the rotating part and the support may be a supporting part and a rotating part of the information communication terminal.

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

1 is an illustration of a communication terminal equipped with a rotary connection device of the present invention. For example, the communication terminal may be a mobile phone having a structure of opening and closing a folder by a pivoting operation. The supporting part 3 and the rotating part 2 are shown in the communication terminal.

The rotary connection device 1 according to the present invention is connected to the support 3 and the rotary part 2 as shown in FIG. 1, and the rotary part 2 is formed at a desired angle with respect to the support 3 (in units of 90 degrees in FIG. 1). 360 degrees rotation in total) is formed to rotate. Reference numeral 4 is an inner cover of the rotating part.

First embodiment

2 is an exploded view of the rotary connection device seen from the front side of the communication terminal.

The first member 14 is a part fixedly connected to the support part 3 of the communication terminal. The first member 14 has a shape almost close to a circular shape and is concave in a polygon or protrudes in the rearward direction of the first member 14. It will include an inner space that is. The inner space portion 41 is preferably in the shape of a square.

On the outer circumference of the first member 14, a plurality of screw holes are formed so as to be coupled to the support part 3 of the communication terminal. In addition, a through hole is formed in the center of the first member 14. The rotary shaft of the second member, which will be described later, is inserted into this through hole and coupled thereto.

In the present embodiment, the inner space portion 41 includes four edges 42, and portions 43 forming sidewalls of the inner space portion between the edges are curved outwardly of the first member. It is formed in a curved shape 43.

At least a part of the second member 10 is formed to be elastically expanded to be accommodated in the first member. The second member 10 is fixedly connected to the rotating part 2 of the communication terminal, and includes a contact portion 11 formed to contact the disc-shaped base 13 and the edge of the first member 14. .

The disk-shaped base 13 is formed so that the rotation shaft 45 protrudes rearward in the center, and a plurality of screw holes are formed on the outer circumference of the rotation shaft so as to be fixedly coupled to the rotation part 2 of the communication terminal. The base 13 is formed to have a size that will not interfere with the inner space at all when rotating in the inner space portion 41 of the first member 14, which is changed according to the size and weight of the rotating portion and the support portion, etc. It becomes a design matter.

The contact portion 11 is movably connected to the rear surface of the base 13. The contact portion 11 is formed in a triangular shape as a whole, and is formed at right angles so that the vertex is in contact with the edge of the inner space 41. That is, it becomes a right triangle shape. This contact portion 11 is connected to the base 13 via a spring 12, as shown in FIG. One end of the spring 12a is supported by the rotation shaft 45 of the base 13, and the other end thereof is installed to contact the center of the contact portion 11. The contacts 13 are also arranged in pairs 180 degrees opposite each other, and these contacts 13 are connected to each other via springs 12b at the ends of the contacts.

The contact portion 11 is arranged to linearly move in the diagonal direction of the inner space portion 41. Guide slots 31 are formed in the base 13 to guide the linear motion. The guide slot 31 is formed in a straight line in the diagonal direction of the inner space portion, and the contact portion 11 is formed with a guide protrusion 21 correspondingly. The guide protrusion 21 is inserted into the guide slot 31 to guide the contact portion to linear movement.

In addition, when the contact portion 11 is contracted in the direction of the rotation axis 45 of the base by the rotational force of the rotary unit 2 of the communication terminal, the force in various directions applied to the tip of the contact portion 11 is converted into a linear motion In order to facilitate the operation, a circumferential guide protrusion 32 is formed around the rear circumference of the base 13.

4 is a perspective view showing a state in which the contact portion 11 is constrained by the circumferential guide protrusion 32. As shown in FIG. 4, the circumferential guide protrusion 32 is not formed at the tip portion of the contact portion 11, but is formed only at the remaining circumferential portion. The circumferential guide converts the direction of the force in various directions received by the tip of the contact portion 11 into a direction capable of linear movement and transmits the contact portion to the contact portion, and the contact portion 11 protrudes out of the base 13. You can decide the amount. In FIG. 4, the distance between the tip and the tip of the contact portion may be equal to or slightly larger than the diagonal length of the inner space portion 41 of the first member 14.

In order to reduce the thickness of the rotary connection device of the present invention, the contact portion 11 is arranged between the base 13 and the first member 14 without a separate member to prevent the separation in the vertical direction. This structure is to allow the base 13 and the first member 14 to act as a separation prevention cover.

After the second member 10 is accommodated in the first member 14, the cover 16 is coupled to prevent the second member 10 from being separated. An insert 15 is arranged between the cover 16 and the second member 10 to reduce friction with the cover when the second member is rotated.

5 is a view showing the operation of the rotary connection device of the present invention.

Figure 5 (a) is an internal projection view seen from the rear side of the rotary connection member. The contact part 11 is arranged with the spring 12, and the state which contacts the edge of the internal space part 41 of the 1st member 14 can be seen.

Thereafter, when the rotating part 2 as shown in FIG. 1 rotates, the second member 10 of the rotary connection device rotates. Figure 5 (b) shows a state rotated about 45 degrees. Since the inner space portion 41 has a square shape, the diagonal length becomes the longest length compared to other rotation radii. At the first rotation, the tip of the contact portion 11 receives a reaction force corresponding to the rotation force from the corner of the inner space portion 41. The initial force transmitted to the tip of the contact portion is about 45 degrees from the moving direction of the contact portion 11, but the contact portion is defined by the above-described circumferential guide protrusion 32 and the guide slot 31 formed in the base in a predetermined direction. Only move.

When the contact portion 11 is contracted in the direction of the rotation axis 45 of the base 13, the spring 12 arranged together inside is contracted to apply a force to push out the contact portion. This force pushes the contact 11 when the contact 11 reaches the next corner position, which in turn makes it possible to rotate the second member by 90 degrees.

In the present embodiment, the case in which the inner space portion 41 of the first member has a rectangular structure has been described as an example. Alternatively, the octagonal structure for applying rotations of 45 degrees and other polygonal structures are also described. The configuration of the rotary connection device can be applied. It is also natural that the rotary connection member of the present invention can be used not only in the communication terminal but also in other similar structures such as a monitor having a pivot function.

Reference numeral 17 is a screw for coupling the first member to the support part 3, and 25 and 27 are corresponding threaded holes. 6 is a cross-sectional view of the rotary connection device 1 of the present invention. In FIG. 6, the first member 14 and the second member 10 are coupled by inserting the rotational shaft 45, and the contact portion 11 and the spring 12 are arranged therebetween. have. In addition, the insert 15 and the cover 16 are coupled to the outside of the second member 10.

Second embodiment

7 is an exploded view of a second embodiment of a rotary connection device of the present invention.

In the second embodiment, the configuration of the first member 114, the internal space portion 141 formed in the first member, and the screw hole is the same as described in the first embodiment. However, in the second embodiment, the edge 142 formed by the inner space portion may be formed in a more gentle curved shape than in the first embodiment.

On the other hand, the second member 110 includes a base 113 and the contact portion 111, the rotation axis 145 formed on the base, the arrangement of the screw holes is the same as the second member 10 of the first embodiment. The contact portion 111 is similarly formed on the base 113, wherein the contact portion 111 is movably connected to the rear surface of the base, and the shape of the contact portion 111 has a gentle curved shape unlike in the first embodiment. It is formed to have a tip.

That is, the tip and vertex portions of the contact portion 111 are not formed to contact the edges of the inner space portion 141 of the first member, but the side portions around the tip portion of the contact portion 111 are the inner space portion 141. It is formed to be in contact with the side wall portion adjacent to the edge of. By such a configuration, when the rotational force of the rotating part 2 is transmitted to the base 113, the contact part 111 may be more easily contracted in the direction of the rotation axis 145, thereby forming a natural rotational motion. The configuration of the guide slot 131 and the guide protrusion 121 formed in the contact portion is the same as in the first embodiment. The contacts 111 are arranged such that the pairs face each other in the opposite direction, and in this embodiment the springs 112 are connected between the contacts.

At the same time, in the second embodiment, the base is assembled so that the outer periphery may contact the curved curved portion 143 formed in the inner space 141. As a result, a space in which the base can be sufficiently rotated is formed on the upper side of the inner space 141, and the contact portion 111 is arranged to contract and expand at intervals of 90 degrees along the side wall of the inner space. In this structure, the circumferential guide protrusion 32 formed on the base in the first embodiment does not need to be formed. The insert 15 in the first embodiment can be omitted, and the same components as in the other first embodiment are supposed to have the same function.

On the other hand, Figure 9 shows the operating state of the second embodiment of the rotary connection device of the present invention, in (a) the contact portion 111 is arranged with the spring 12, the inside of the first member 114 It can be seen that the side adjacent to the front end of the contact portion 111 is in contact with the side adjacent to the edge of the space portion 141. Here, the base 113 is in a state covering the inner space portion, and the contact portion 111 can be seen to protrude toward the edge of the inner space portion than the base 113 at the fixed position.

In the second embodiment, since the tip portion of the contact portion 111 is smoothly formed in a curve compared with the first embodiment, it is more natural to move along the wall surface of the inner space portion 141. Therefore, compared with the first embodiment, it is possible to further reduce the height of the rotary connection device, thereby making it possible to manufacture a very small hinge.

(b) is a view illustrating a state in which the rotating part 2 rotates so that the second member 110 rotates accordingly. The tip portion of the contact portion 111 moves along the wall surface of the inner space portion 141, and the base 113 rotates along the curved portion of the upper side of the inner space portion. At this time, the contact portion 111 is moved to the inside of the base 113 in an elastically contracted state.

(c) illustrates a state in which the rotating part 2 rotates and moves by 90 degrees, and the contact part 111 expands again to protrude toward the corner portion of the inner space part 141.

In FIG. 10, the first member 114 and the second member 110 are coupled to each other, and a cross section in which the first member 114 and the second member 110 are connected to each other by a spring is illustrated. In addition, the cover 116 is coupled to the outside of the second member 110.

In the present embodiment, the case in which the inner space portion 41 of the first member has a rectangular structure has been described as an example. Alternatively, the octagonal structure and the other polygonal structures for applying rotations of 45 degrees may be used. The configuration of the rotary connection device can be applied as in the first embodiment. Although not shown in the drawings, reference numeral 117 denotes a screw for coupling the first member to the support, and 125 and 127 are corresponding threaded holes.

The rotary connection device of the present invention can reduce the number of parts required compared to the prior art can reduce the manufacturing cost, it provides an effect that can increase the operating performance due to a simpler structure.

In addition, the hinge having a conventional rotary connection structure can only reciprocate in the range of 90 degrees, the rotary connection device of the present invention has the advantage that can be rotated more than 360 degrees without any limitation.

In addition, there is an effect of providing a structure having a strong supporting force compared to the conventional hinge structure. That is, in order to support the weight of the rotating part itself in the state of rotating the rotating part should be able to support the force in a position rotated 90 degrees, the present invention can increase such a supporting force.

While the invention has been shown and described with respect to particular embodiments, it will be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (12)

In the rotary connection device for connecting the rotary part and the support and to rotate the rotary part by a predetermined angle, A first member recessed in a polygon and having an inner space formed at a center thereof, the first member being fixedly connected to the support; And A second member accommodated in the first member so that at least a portion thereof is elastically extended to contact the inner surface of the first member, and a rotation shaft inserted into the through hole is formed and accommodated in the inner space of the first member; Including, The second member, A disk-shaped base on which guide slots are formed in a diagonal direction; It is connected to the base through a guide protrusion inserted into the guide slot to contact the inner space portion of the first member and to elastically contract and expand in a diagonal direction, and triangular shape so that two surfaces contact the inner space portion. Contact portion formed; And And a circumferential guide protrusion formed on the base to contact a circumferential circumference of a surface of the base to which the contact part is connected, except for a front portion of the contact part. delete The rotational connecting device according to claim 1, wherein the inner space of the first member has a substantially square shape. The rotary connection device according to claim 1, wherein the contact portion of the second member is formed to contact an edge of the inner space of the first member. The rotary connector of claim 1, wherein the contact portion of the second member is formed to contact a side adjacent to an edge of the inner space of the first member. delete According to claim 1, The contact portion is provided with a pair in the opposite direction to each other, the rotary connection device, characterized in that it is elastically connected to the base or other contact portion through a spring. delete The rotary connection device according to claim 1, wherein sides between edges of the inner space of the first member are formed in a curved shape toward the outside. 10. The rotational connection device according to claim 9, wherein the outer periphery of the base is arranged to contact the curved portion of the corner of the inner space part. The apparatus of claim 1, further comprising a cover covering the outer circumferential portion of the second member and the circumferential portion of the first member, and an insert inserted between the cover and the second member to reduce frictional force due to rotation. Rotational connection device, characterized in that. The rotating connection device according to claim 1, wherein the rotating part and the supporting part are the supporting part and the rotating part of the information communication terminal.

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