KR100799615B1 - Swivel hinge - Google Patents

Abstract

A swivel hinge is provided to achieve precise swiveling and prevent power generating parts from being damaged due to excessive external force by allowing the swivel hinge to be operated manually and automatically, by coaxially placing a geared motor, a first hinge base, and a friction wheel. A swivel hinge, connecting a first body and a second body to each other for swiveling, comprises a first hinge base(110), a power generating part, a second hinge base(120), and a friction wheel(130). The first hinge base is assembled with the first body. The power generating part, assembled with the first hinge base, comprises an output shaft for power transfer. The second hinge base is assembled with the second body. The friction wheel, assembled with the second hinge base, includes one end assembled with the output shaft. A maximum static friction torque of the friction wheel can be greater than a driving torque, and lower than a holding torque of the power generating part. The first hinge base, power generating part, and friction wheel are coaxially disposed relative to each other.

Description

Swivel Hinge

1 is a front view of a TV and stand coupled to be swivelable;

2 is a cross-sectional view showing a swivel hinge according to an embodiment of the present invention.

3 is a perspective view illustrating the first hinge base of FIG. 2;

4 is a perspective view illustrating a second hinge base of FIG. 2.

5 is a perspective view of the bearing of FIG. 2;

6 is a perspective view illustrating a friction difference part of FIG. 2.

7 is a plan view illustrating a friction difference part of FIG. 2.

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

10: TV 20: Stand

110: first hinge base 117: coupling hole 117

118: coupling groove 125, 154: screw hole

120: second hinge base 123: guide projection

130: friction difference portion 132: friction bolt

134: friction nut 136: plate

160: geared motor

The present invention relates to a swivel hinge.

Flat panel displays applied to TVs or monitors with LCD, PDP, LED, etc. have the advantage of being able to use a narrow space efficiently, replacing CRT TVs or monitors, and the demand is expected to increase in the future. Such TVs and monitors allow the display to be swiveled with respect to the support, thereby allowing the user to change the position of the display in a desired direction.

Also, in a swivel type portable terminal, a folder provided with a display, a receiver, and the like can be swiveled with respect to a main body provided with a keypad and a call unit.

Rotation between the flat panel display of the TV or monitor, the support unit, and the main body and the folder of the swing-type portable terminal combines a swivel hinge configured to be swivel to change the position of the display in a desired direction.

The swivel hinge according to the conventional scheme is configured to allow only manual swivel, so there is a problem in that the precise swivel of the display cannot be adjusted.

In the case of the swivel hinge configured to enable automatic swivel, manual swivel by the external force of the user is impossible, and when excessive external force is applied, there is a concern that a power generator such as a motor used for automatic swivel may be damaged. There is a problem.

The present invention provides a swivel hinge capable of both automatic and manual swivel by using a motor and friction differential structure.

According to an aspect of the present invention, a swivel hinge for swivelably connecting a first body and a second body to each other, comprising: a first hinge base coupled to the first body; A power generation unit coupled to the first hinge base and including an output shaft for transmitting power; A second hinge base coupled with the second body; Coupled with the second hinge base, one end may provide a swivel hinge including a friction difference portion coupled to the output shaft.

The maximum stop friction torque of the friction differential portion may be made larger than the required torque for driving the power generation portion, and the maximum stop friction torque of the friction differential portion may be made smaller than the holding torque of the power generation portion.

The second hinge base may include a second coupling part coupled to the second body and a housing part protruding from one surface of the second coupling part.

The first hinge base may be hollow so as to receive the power generating unit therein, and includes a first coupling part coupled to the first body and an insertion part inserted into a space partitioned by the housing part and covered by the housing part. In this case, the first coupling portion and the insertion portion may be formed to form a step.

One of the insertion portion and the second hinge base may be formed with guide protrusions, and the other may be formed with guide grooves defining a moving range of the guide protrusions corresponding to the guide protrusions.

The friction difference portion may include a donut-shaped plate in which a through hole is formed; A friction bolt including a bolt head having a shaft accommodating part accommodating an output shaft on one surface thereof, and a bolt body extending from the other surface of the bolt head and inserted into a through hole; And a friction nut coupled to the bolt body to regulate the plate.

At this time, the washer may be interposed between the bolt head and the plate, and the washer may be interposed between the friction nut and the plate.

The power generation unit may include a motor generating power and a gear box coupled to the motor, and a bearing may be interposed between the first hinge base and the second hinge base.

On the other hand, the first hinge base, the power generating portion and the friction difference portion may be arranged to have a concentric axis.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

Hereinafter, a preferred embodiment of the swivel hinge according to the present invention will be described in detail with reference to the accompanying drawings, in the following description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals and duplicated thereto. The description will be omitted.

Hereinafter, for convenience of explanation and understanding, as an object swivelably coupled by the swivel hinge according to the present embodiment, the TV 10 and its stand 20 will be described as an example as shown in FIG. 1. . FIG. 1 is a front view illustrating a TV and a stand which are swivelably coupled, and the swivel hinge according to the present embodiment may be used at the point 'A' to which the TV 10 and the stand 20 are connected. Naturally, the swivel hinge according to the present embodiment may be applied to a TV and a stand.

2 is a cross-sectional view showing a swivel hinge according to an embodiment of the present invention. 2, the first hinge base 110, the coupling hole 117, the coupling groove 118, the screw holes 125 and 154, the second hinge base 120, the guide protrusion 123, and the friction difference part. 130, friction bolt 132, friction nut 134, plate 136, washer 138, 152, controller 140, PCB 142, controller 144, Hall sensor 146, bearing 151, screw 153, pin 156, geared motor 160, motor 162, gearbox 164 are shown.

The first hinge base 110 is a means that is coupled to the TV 10 to rotate relative to the second hinge base 120 to be described later. Although the first hinge base 110 may be directly coupled to the TV 10, a mediator may be used to facilitate the coupling. In such a case, the first hinge base 110 may be coupled to the mediator.

A coupling hole 117 or a coupling groove 118 may be formed in the first hinge base 110 so as to be integrally rotated with the TV 10. The coupling hole 117 and the coupling groove 118 is a means for allowing the TV 10 and the first hinge base 110 to be coupled, so that the shape, size, location, etc. thereof can be easily performed by those skilled in the art. It is natural that various modifications can be applied to the extent possible.

A power generator such as a motor 162 may be used so that the TV 10 can rotate without the user directly applying an external force. In this case, the motor 162 may be accommodated in the first hinge base 110, and for this purpose, the first hinge base 110 may be hollow.

By forming the first hinge base 110 in a hollow shape, the power generating unit can be accommodated inside the first hinge base, thereby allowing the first hinge base to rotate more efficiently. In addition, the overall volume can be reduced, thereby facilitating the design.

The motor 162 is a means for generating power by receiving power, and the swivel hinge according to the present embodiment can implement a swivel in the automatic mode by using the motor 162. Meanwhile, in the present embodiment, the geared motor 160 having the form in which the gear box 164 is coupled to the motor 162 generating power is used.

The geared motor 160 is provided with a reduction mechanism such as a gear on the rotation shaft of the motor 162, thereby realizing low speed rotation that cannot be obtained by the motor itself or generating a large torque. In the case of a motor with a gear, the torque increases in response to the deceleration caused by the gear, so that a large torque can be obtained even in a relatively small motor.

Referring to FIG. 3, the first hinge base 110 may include a first coupling part 111 coupled to the TV 10 and an insertion part 112 inserted into the second hinge base 120 to be described later. Can be done. In order for the first hinge base 110 and the second hinge base 120 to be stably maintained even when swiveling, the first coupling part 111 and the insertion part 112 may be formed to form a step.

That is, as shown in Figure 3, the overall has a cylindrical shape, the insertion portion 112 is to be formed smaller in outer diameter than the first coupling portion (111). Through this structure, the first coupling part 111 may be seated on the second hinge base 120, and the insertion part 112 may be inserted into the second hinge base 120, thereby improving stability.

Meanwhile, the guide groove 113 may be formed in the insertion portion 112 of the first hinge base 110. A guide protrusion 123 may be formed at a position on the second hinge base 120 corresponding to the guide groove 113, and the guide protrusion 123 may be inserted into the guide groove 113 to be disposed in the guide groove 113. The moving range can be defined by. This is a means for preventing the TV 10 from rotating excessively.

In the present exemplary embodiment, a guide groove 113 is formed in the first hinge base 110 and a guide protrusion 123 is formed in the second hinge base 120 corresponding thereto. A guide protrusion may be formed in the base 110, and a guide groove may be formed in the second hinge base 120 corresponding thereto.

As described above, the first hinge base 110 may have a structure in which the geared motor 160 may be accommodated so that the first hinge base 110 may rotate relative to the second hinge base 120. A through hole 114 may be formed in the first hinge base 110 so that the output shaft 166 of the geared motor 160 accommodated therein may be exposed, and a screw hole for fastening with the geared motor 160 may be formed. 115 may also be formed.

That is, the output shaft 116 of the geared motor 160 accommodated inside the first hinge base 110 is exposed through the through hole 114, and the exposed output shaft 116 may have a friction difference unit 130 described later. ) Can be combined. In addition, the first hinge base 110 and the geared motor 160 can be integrally rotated by the coupling using a screw.

In addition, the hall sensor 146 is coupled to the first hinge base 110, and a magnet (not shown) is coupled to the second hinge base 120 corresponding thereto to detect rotation of the first hinge base 110. can do. Rotation information sensed by the Hall sensor 146 is transmitted to the motor control unit 140 that controls the operation of the geared motor 160 may be used to efficiently control the operation of the motor.

The second hinge base 120 is coupled to and fixed to the stand 20 supporting the TV 10. In order to be coupled to the stand 20 and fixed as described above, referring to FIG. 4, a second coupling portion 121 having a plate shape having a coupling hole 154 may be formed in the second hinge base 120. The second hinge base 120 may be coupled to the stand 20 through the coupling hole 154 and the screw.

The second hinge base 120 may be provided with a housing part 122 covering the insertion part 112 of the first hinge base 110 described above. That is, the cylindrical housing portion 122 that is open on the upper surface of the second coupling portion 121 may be formed. The insertion part of the first hinge base 110 described above may be inserted into the housing part 122 to rotate.

Meanwhile, a bearing 151 as shown in FIG. 5 may be interposed between the first hinge base 110 and the second hinge base 120. Referring to FIG. 1, a T-shaped bearing 151 capable of supporting both the lower surface of the first coupling portion 111 and the side surface of the insertion portion 112 may be interposed therebetween.

A predetermined gap 159 is formed between the lower surface of the insertion part 112 and the second hinge base 120 through the T-shaped bearing 151 or the washer 152 to maintain a stable motion without interposing the bearing. have.

An accommodating part 124 may be formed inside the second hinge base 120 to accommodate a part or all of the friction difference part 130 to be described later. Receiving portion 124 may be formed according to the shape of the friction difference portion 130 is accommodated.

Magnet (mido) providing a second hinge base 120, a guide protrusion 123 corresponding to the guide groove 113 formed in the first hinge base 110, and a magnetic field detected by the hall sensor 146 H) may be formed as described above.

6 is a perspective view illustrating a friction difference part of FIG. 2, and FIG. 7 is a plan view illustrating the friction difference part of FIG. 2. 6 and 7, the bolt head 132a, the bolt body 132b, the friction nut 134, the plate 136, the coupling hole 135, and the washers 137 and 138 are illustrated.

The friction difference unit 130 is a means for enabling the swivel hinge according to the present embodiment to implement the automatic mode and the manual mode through the friction difference structure.

In the swivel hinge according to the present embodiment, the friction difference unit 130 may be composed of a friction bolt 132 and a friction nut 134 and a plate 136 interposed therebetween, and washers 137 and 138 as necessary. ) May be used further.

Friction bolt 132 may be made of a bolt head (132a) and the bolt body (132b). The bolt body 132b penetrates the plate 136 to be described below, and the bolt head 132a and the plate 136 come into contact with each other to cause friction. In this case, a washer may be interposed between the bolt head 132a and the plate 136 to adjust the degree of friction.

A shaft accommodating part for receiving an output shaft of the geared motor 160 may be formed on the upper surface of the bolt head 132a. The output shaft is accommodated in the shaft accommodating portion, and by coupling the output shaft and the shaft accommodating portion through the pin 156 or the like, the output shaft and the friction bolt 132 can be integrally rotated.

The plate 136 has a donut shape and may be penetrated by the bolt body 132b of the friction bolt 132. As a result, the lower surface of the bolt head 132a and the upper surface of the plate 136 may come into contact with each other, causing friction.

In addition, the friction nut 134 is coupled to the end of the bolt body 132b that penetrates the plate 136 to control the plate 136, as well as the lower surface and the friction nut 134 of the plate 136. It is possible to contact the upper surface of the, it is possible to cause friction as in the upper surface of the plate 136. In this case, a washer 137 may be interposed between the plate 136 and the friction nut 134 to adjust the degree of friction, and a plurality of washers may be used as necessary.

In addition to friction generated on the upper and lower surfaces of the plate 136, friction may also occur between the plate 136 and the bolt body 132b penetrating the plate 136.

Through such a friction structure, the maximum stop friction torque that the friction difference unit 130 has may be larger than the required torque required by the geared motor 160. Here, the maximum stop friction torque refers to the torque according to the maximum stop friction force of the friction difference unit 130, and the required torque for driving the geared motor 160 refers to the minimum torque required for driving the geared motor 160 by power supply. Say. To this end, as described above, a method of interposing a washer or the like in the friction difference unit 130 may be used. In addition, a method of surface treatment of a surface in which friction occurs may be used.

On the other hand, the maximum stop friction torque that the friction difference unit 130 has is preferably smaller than the holding torque (Holding Torque) of the geared motor 160. The holding torque of the geared motor 160 refers to the minimum torque capable of rotating the output shaft of the geared motor 160 in an inoperative state through an external force. The holding torque may be adjusted by changing the number of windings of the coil in the motor 162 or adjusting the friction force between the gears present in the gearbox 164. This is to enable manual mode operation of the swivel module according to the present embodiment, and specific operation thereof will be described later.

In the present embodiment, while presenting the donut-shaped plate 136, the plate 136 and the washer (137, 138) is distinguished, but the washer itself may perform the function as a plate, a plate using a plurality of washers May be achieved.

In order to allow the power generated from the geared motor to be transmitted efficiently, the first hinge base, the geared motor, and the friction difference part having the rotational motion may be arranged to have concentric shafts. This is because the energy efficiency of the system can be increased by minimizing the energy deficiency that can occur during the transmission of power when arranged with concentric shafts.

The structure of the swivel hinge according to the exemplary embodiment of the present invention has been described above. Next, the operation of the swivel hinge according to the exemplary embodiment of the present invention will be described.

The swivel hinge according to the present embodiment is capable of both automatic mode and manual operation. First, the automatic mode will be described.

When the geared motor 160 is automatically driven, since the load of the friction difference unit 130, that is, the maximum stop friction torque is greater than the required torque of the geared motor 160, slippage does not occur in the friction difference unit 130. 130 is rotated along the rotation of the geared motor 160. That is, the movement of the first hinge base 110 and the TV 10 can be controlled by the control of the geared motor 160.

The backlash phenomenon that may occur during rotation can be solved by using friction generated in the bearing 151. That is, the backlash phenomenon can be prevented by designing the friction force generated in the bearing to be larger than the force causing backlash.

Next, the manual mode will be described. When the user rotates the TV 10 by the load of the friction difference unit 130, that is, the friction torque or more, slippage occurs in the friction difference unit 130. However, since the holding torque of the geared motor 160 is larger than the load of the friction difference unit 130, that is, the maximum stop friction torque, the geared motor 160 does not perform its own operation. As a result, the geared motor 160 and the first hinge base 110 is rotated together along the friction difference unit 130, whereby the TV 10 can rotate.

Even if a user rotates the TV 10 with a force equal to or greater than the holding torque of the geared motor 160, since slippage occurs in the friction difference unit 130, the geared motor 160 cannot apply a force greater than the holding torque to the motor. May not be broken.

When the user applies a force smaller than the maximum stop friction torque of the friction difference unit 130, since the operation of the motor as well as slippage in the friction difference unit does not occur, the TV 10 does not rotate.

In the above, a swivel hinge according to a preferred embodiment of the present invention has been described, and many embodiments other than the above-described embodiments exist within the claims of the present invention.

According to the preferred embodiment of the present invention as described above, by using a motor and friction differential structure, it is possible to provide a swivel hinge capable of both automatic and manual swivel.

Claims (13)

In the swivel hinge for connecting the first body and the second body to each other swivelable, A first hinge base coupled with the first body; A power generator coupled to the first hinge base and including an output shaft for transmitting power; A second hinge base coupled with the second body; A swivel hinge coupled to the second hinge base, one end includes a friction difference portion coupled to the output shaft. The method of claim 1, Swivel hinge, characterized in that the maximum stop friction torque of the friction differential portion is greater than the required torque of the power generating portion. The method of claim 1, The maximum stop friction torque of the friction differential portion is smaller than the holding torque of the power generating portion swivel hinge. The method of claim 1, The first hinge base is a swivel hinge, characterized in that the hollow is made so that the power generating unit is received therein. The method of claim 1, The second hinge base, A second coupling part coupled to the second body, Swivel hinge, characterized in that it comprises a housing portion protruding from one surface of the second coupling portion. The method of claim 5, The first hinge base, A first coupling part coupled to the first body, An insertion part inserted into a space partitioned by the housing part and covered by the housing part, Swivel hinge, characterized in that the first coupling portion and the insertion portion is formed to form a step. The method of claim 6, Swivel hinge, characterized in that the guide projection is formed in any one of the insertion portion and the second hinge base, the guide groove defining the movement range of the guide projection corresponding to the guide projection . The method of claim 1, The friction difference portion, A donut-shaped plate in which a through hole is formed; A friction bolt including a bolt head having a shaft accommodating part accommodating the output shaft on one surface thereof, and a bolt body extending from the other surface of the bolt head and inserted into the through hole; And And a friction nut coupled to the bolt body to clamp the plate. The method of claim 8, Swivel hinge, characterized in that the washer is interposed between the bolt head and the plate. The method of claim 8, Swivel hinge, characterized in that the washer is interposed between the friction nut and the plate. The method of claim 1, The power generation unit, Power generating motor, Swivel hinge comprising a gear box coupled to the motor. The method of claim 1, Swivel hinge further comprising a bearing interposed between the first hinge base and the second hinge base. The method of claim 1, Swivel hinge, characterized in that the first hinge base, the power generating portion and the friction difference portion is arranged to have a concentric axis.

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