KR101334070B1 - Connector assembly and rotating device using the same - Google Patents

Abstract

The present invention relates to a connector assembly and a rotating device using the same. The first connector 20 and the second connector 30 constituting the connector assembly of the present invention can be rotated relative to each other 360 degrees. To this end, the housings 21 and 31 of the first connector 20 and the second connector 30 are provided with a circular contact pattern 23 and a contact pin 33 contacting the contact pattern 23. The contact pin 33 maintains the contact state while moving along the circular contact pattern 23 by the rotation between the first connector 20 and the second connector 30. According to the present invention, it is possible to configure the display unit or the rotating unit to rotate 360 degrees in a monitor, a camera, a camcorder or the like so that the power line or the signal line is not twisted.

Description

Connector assembly and rotating device using the same}

The present invention relates to a connector assembly and a rotating device using the same.

In the connector assembly, the first and second connectors are coupled to each other to perform a power and signal connection. The connector assembly, for example, facilitates the connection and disconnection of the power source and the load, the power source and the signal between the control unit and the controlled part.

On the other hand, in the existing monitors, cameras, camcorders, notebooks, and the like, for example, the display unit or the part acquiring the signal is configured to rotate relative to the body of the monitor, camera, camcorder, notebook, and the like. However, when the display unit or the part acquiring the signal rotates about 360 degrees with respect to the body, the power and signal connection lines are wound to cause twisting. Therefore, in general, there is an inconvenience in that the display unit or the part acquiring the signal is not rotated 360 degrees with respect to the body.

Here, the above problem will be described with reference to the monitors shown in FIGS. 1 and 2. The monitor 1 is composed of a support plate 3 on which the body 2 is supported on the ground and a support column 5 installed on the support plate 3.

The display unit 7 is connected to the support column 5 through the connection unit 6. The connecting portion 6 is configured to be rotatable with respect to the support pillar 5. Of course, the connecting portion 6 is integral to the support pillar 5, the support pillar 5 is rotated with respect to the support plate 3, or the portion connected to the support plate 3 side of the support pillar (5) The portion connected to the display unit 7 side may be rotated relative to each other.

A power line 9 and a signal line 9 'are connected to the display unit 7, and the power line 9 is connected to a power source, and the signal line 9' is connected to a signal displayed on the display unit. It is connected to a control unit (for example, a computer) to provide. The power supply line 9 and the signal line 9 'are directly connected to the display unit 7 in the monitor 1.

In this structure, since the power line 9 and the signal line 9 'are directly connected to the display unit 7, when the display unit 7 rotates with respect to the body 2, FIG. As indicated, the power supply line 9 and the signal line 9 'are wound around the support pillar 5. If the display unit 7 is rotatable 360 degrees with respect to the body 2 and rotates 360 degrees in one direction, the power line 9 and the signal line 9 'are connected to the support pillar 5. It is wound. Therefore, when the display unit 7 continues to rotate in one direction, the power line 9 and the signal line 9 'are wound around the support pillar 5 and twisted, and thus no longer rotate in that direction. May be

An object of the present invention is to provide a connector assembly capable of transmitting power and signals while continuously rotating 360 degrees in one direction.

Another object of the present invention is to provide a rotating device which can rotate the display unit or the controlled unit by 360 degrees with respect to the body or the control unit using the connector assembly.

In one embodiment of the present invention, the connector assembly of the present invention is provided with a first connector having a first connection line connected to a power source or an external device through a first housing, and connected to a power source or an external device through a second housing. A second connection line is provided and includes a second connector which is rotated 360 degrees with respect to the first connector, and is connected to each front end face of the first housing and the second housing when coupled to each other. A pattern and a contact pin in contact therewith are provided.

In another example, the contact pin is supported by the pin elastic member and in close contact with the contact pattern.

In another example, the contact pattern is formed with a pin groove at a predetermined interval, and the front end of the contact pin is formed in contact with the curved surface to be electrically connected to the contact pattern and seated in the pin groove.

In another example, the first housing is inserted inside the second housing.

In another example, a hook ball is supported and installed on the ball-elastic member so as to protrude to the outer surface of the first housing, the hook groove is formed along the circumference of the inner surface of the coupling space of the second housing do.

In another example, the plurality of contact patterns may be provided to form concentric circles, and the contact pins may be installed at positions corresponding to the respective contact patterns.

In another example, the center of rotation of the first housing and the second housing is provided with a rotation center hole in which the rotation center axis and the rotation center axis are inserted to correspond to each other.

According to another example of the present invention, the rotary device of the present invention is provided with a body portion having a line for connection with an external device, a rotating portion installed to rotate 360 degrees with respect to the body portion, the body portion is provided A first connector having a first connection line connected to the line through a first housing forming a frame and a second housing provided on the rotating part and coupled to the first housing form a frame and the second housing. A second connector having a second connection line connected to the rotating part through the second connector, wherein the first and second housings face each other and have a circular contact pattern and a contact pin contacting the contact pattern; Is provided.

In another example, the contact pin is supported by the pin elastic member and in close contact with the contact pattern.

In another example, the contact pattern is formed with a pin groove at a predetermined interval, and the front end of the contact pin is formed in contact with the curved surface to be electrically connected to the contact pattern and seated in the pin groove.

In another example, a coupling space into which the first housing is inserted is formed at the front end of the second housing, and a hook ball is supported and installed on the ball-elastic member so as to protrude toward an outer surface of the first housing. A hook groove in which the hook ball is walked is formed along the circumference of the inner surface.

In another example, the plurality of contact patterns may be provided to form concentric circles, and the contact pins may be installed at positions corresponding to the respective contact patterns.

In another example, the center of rotation of the first housing and the second housing is provided with a rotation center hole in which the rotation center axis and the rotation center axis are inserted to correspond to each other.

In the connector assembly and the rotating device using the same according to the present invention, the following effects can be obtained.

In the connector assembly of the present invention, the first connector and the second connector, which are components thereof, are electrically connected to each other by a contact pattern and a contact pin on each end surface thereof, so that relative rotation is possible while power and signal can be transmitted. The power and signal can be directly transmitted from, so that power and signals can be transmitted in various environments.

In addition, in the connector assembly of the present invention, since the contact pin of the first connector is supported by the pin elastic member to be in close contact with the contact pattern of the second connector, the power and signal connection between the contact pin and the contact pattern is more reliably performed. .

In addition, the contact pattern has a pin groove in which the curved surface formed at the tip of the contact pin is seated to maximize the contact area, thereby improving power and signal connectivity.

In addition, if the connector assembly of the present invention is used, the body and the display unit or the control unit and the controlled unit can be rotated 360 degrees in a monitor, a camera, a camcorder, a notebook, and the like, thereby increasing the convenience of use of these products.

1 is a perspective view showing the configuration of a monitor according to the prior art.
2 is an explanatory diagram showing a problem of the conventional monitor shown in FIG.
Figure 3 is a cross-sectional view showing the configuration of a preferred embodiment of the connector assembly according to the present invention.
Figure 4 is a plan view showing the configuration of a first connector constituting an embodiment of the present invention.
5 is a plan view showing the configuration of a second connector constituting an embodiment of the present invention.
6 is a detailed view showing the configuration of a contact pattern of the second connector shown in FIG.
Figure 7 is a use state showing the process of coupling the connector assembly of the embodiment of the present invention.
Figure 8 is an operating state showing the contact state of the contact pin and the contact pattern in a state in which the connector assembly of the embodiment of the present invention is coupled.
Figure 9 is a perspective view showing that the rotary device having a connector assembly of the embodiment of the present invention is applied to the monitor.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

In the present specification, a monitor is described as an example of a rotary device having a connector assembly. The rotating device may be a variety of cameras, notebooks, camcorders, and the like.

As shown in the drawings, the connector assembly according to the embodiment of the present invention includes a first connector 20 having a first connection line 25 passing through the first housing 21 and connected to a power source or an external device. A second connecting line 43 is connected to a power source or an external device through the second housing 31 into which the first housing 21 is inserted, and rotates 360 degrees with respect to the first connector 20. It includes a second connector 30 is connected, each of the first housing 21 and the second housing 31 facing each other when coupled to each other in contact with the circular contact pattern 23 in a circular shape and electrically connected thereto A contact pin 33 is provided to be connected.

Such a connector assembly will be described in more detail below. The connector assembly of the present embodiment is composed of a first connector 20 and a second connector 30. These first connector 20 and the second connector 30 is configured to allow relative rotation with respect to each other. In particular, the first connector 20 and the second connector 30 can be rotated 360 degrees with respect to each other.

First, the first housing 21 forms a skeleton and an appearance of the first connector 20. The first housing 21 is cylindrical. However, the first housing 21 does not necessarily have to have a cylindrical shape. That is, the coupling space 32 is formed to be opened to the tip of the second housing 31 to be described below, the coupling space 32 is preferably a cylindrical shape, but to the appearance of the first housing 21 is a cylinder It does not have to be a shape. Here, the cross section of the first housing 21 may have a polygonal shape close to a circle.

A contact pattern 23 is formed on the front end surface of the first housing 21. The contact pattern 23 is formed of a conductive material. The contact pattern 23 may be formed directly on the first housing 21 or may be formed on a separate substrate. The contact patterns 23 are arranged to constitute a plurality of concentric circles. Such a structure is well illustrated in FIG.

On the other hand, the contact pattern 23 is formed with a fin groove (23 ') at a predetermined interval. The pin groove 23 ′ is made so that the portion where the contact pattern 23 is formed is recessed. That is, the pin groove 23 'is made in a substantially hemispherical shape.

The first connection line 25 is provided to penetrate the inside of the first housing 21. The first connection line 25 is made of a conductive material and may be inserted into the first housing 21 to be integrated. The first connection line 25 may be a kind of wire.

Hook ball 27 is provided to protrude to the outer surface of the first housing 21. The hook ball 27 is positioned inside the first housing 21, and only a part of the hook ball 27 protrudes to the outer surface of the first housing 21. To this end, the diameter of the through hole (not shown) protruding outward from the hook ball 27 in the first housing 21 is smaller than the diameter of the hook ball 27. The hook ball 27 is supported by the ball-elastic member 28 inside the first housing 21, and a part of the hook ball 27 protrudes to the outer surface of the first housing 21. In this embodiment, four hook balls 27 are provided at regular intervals.

The second housing 30 has an outer appearance and a skeleton formed by the second housing 31. A coupling space 32 is formed in the second housing 31 to be opened to the tip. A part of the first housing 21 is inserted into the coupling space 32. The shape of the coupling space 32 is made to correspond to the portion of the first housing 21 is inserted. In this embodiment, the coupling space 32 is made to have a circular cross section. The outer shape of the second housing 31 may be any shape as long as the coupling space 32 has only a shape in which the first housing 31 can be inserted and rotated.

A hook groove 32 ′ is formed on an inner surface of the coupling space 32. The hook groove 32 ′ is formed in a channel shape surrounding the inner surface of the coupling space 32. The hook ball 27 of the first housing 21 is hooked to the hook groove 32 ′. When the first connector 20 and the second connector 30 are coupled to each other by such a structure, the hook ball 27 is hooked to the hook groove 32 'so that the first connector 20 and the second connector are hooked up. Rotation between the 30 is freely possible, but the coupling between the first connector 20 and the second connector 30 is not easily released.

For reference, the structure of the hook ball 27 and the hook groove 32 'serves to allow the first connector 20 and the second connector 30 are coupled to each other. However, the structure in which the first connector 20 and the second connector 30 are coupled to each other may have various structures in addition to those shown. That is, instead of the hook ball 27, a protrusion capable of some elastic deformation may be provided on the outer surface of the first housing 21, and the protrusion may be hooked to the hook groove 32 'having the channel shape. .

On the other hand, in the present embodiment, the first housing 21 has a center of rotation 21 'at its center of rotation, and the second center 31 has a center of rotation (rotating center hole 21') inserted therein ( 31 ') is formed in the center of the bottom surface of the coupling space (32). The center of rotation shaft 21 ′ and the center of rotation hole 31 ′ serve to guide rotation between the first connector 20 and the second connector 30.

A contact pin 33 is provided to protrude a tip into the coupling space 32 of the second housing 31. The contact pins 33 are provided at positions corresponding to the respective contact patterns 23. The number of the contact pins 33 should be the same as the number of the contact patterns 23, but in this embodiment, two contact pins 33 are provided in one contact pattern 23. And although the contact pins 33 are arranged in a line, it is not necessary to do so.

The configuration of the contact pin 33 will be described with reference to FIG. 3. The pin body 35 forms a skeleton of the contact pin 33. The pin body 35 is made in the shape of a rod in this embodiment. The pin body 35 has a relatively large diameter at the tip end thereof and a relatively small diameter at the middle and back sides thereof. Therefore, there is a step between the tip and the middle of the pin body (35). By this step, the support end 35 'is made and one end of the pin elastic member 41 to be described below is supported.

At the tip of the pin body 35, the contact surface 37 seated in the pin groove 23 ′ of the contact pattern 23 has a hemispherical shape. When the contact surface 37 has a hemispherical shape and is seated in the pin groove 23 ', the contact area between them becomes relatively wider, and thus the power and signal connection is more smoothly performed. Coupling of the contact surface 37 and the pin groove 23 ′ also serves to hold the shake between the first connector 20 and the second connector 30.

The rear end of the pin body 35 is provided with a hook end (39). The hook end 39 has a diameter larger than that of the rear end of the pin body 35 so that the contact pin 33 does not randomly fall into the coupling space 32 in the second housing 31. It plays a role. The hook end 39 may be made separate from the pin body 35 to be detachable. For example, the pin body 35 is a bolt-like configuration and the hook end 39 is made of a nut-like configuration to be detachable. Alternatively, a relatively large portion including the contact surface 37 at the tip end of the pin body 35 may be made to be detachable from the pin body 35.

In this way, the installation of the contact pin 33 in the second housing 31 is relatively easy. In FIG. 3, the pin body 35 penetrates one side of the second housing 31 and the hook end 39 is walked inward of the second housing 31. Here, the portion through which the pin body 35 penetrates a part of the second housing 31, but may be separately mounted and mounted on the second housing 31. The surface of this part forms the bottom surface of the coupling space 32.

A pin elastic member 41 is installed between the contact pin 33 and the bottom surface of the coupling space 32. The pin elastic member 41 is a cylindrical coil spring, and provides a force for protruding the pin body 35 of the contact pin 33 into the coupling space (32).

The contact pin 33 is electrically connected to the second connection line 43 inside the second housing 31. The second connection line 43 is made of a conductive material in the same configuration as the first connection line 25 to provide an electrical connection. The contact pin 33 is electrically connected to the second connection line 43. The contact pin 33 and the second connection line 43 may be always electrically connected. To this end, the outer surface of the hook end 39 should be in contact with the second connection line 43. In addition, the second connection line 43 and the contact pin 33 may be electrically connected only when the first connector 20 is coupled to the first connector 20. The rear end surface of the hook end 39 may be in electrical contact with the second connection line 43 when the contact pin 33 is pushed backward.

On the other hand, with reference to Figure 8 will be described the rotary device of the embodiment of the present invention. For reference, in the present specification, a monitor is used as an example of the rotating device.

The rotating device of the present embodiment includes a body part 111 having lines 119 and 119 'for connecting to an external device, a rotating part 117 which is a display part installed to be rotated 360 degrees with respect to the body part 111, A first connector 20 provided at a side of the body part 111 and having a first connection line 25 penetrating through the first housing 31 forming a skeleton and connected to the lines 119 and 119 '; The second connecting line provided on the side of the rotating part 117 and coupled to the first housing 21 forms a skeleton and passes through the second housing 31 to be connected to the rotating part 117. And a second connector 30 provided with 43, and a circular contact pattern 23 and the contact pattern 23 are formed on surfaces of the first housing 21 and the second housing 31 facing each other. ) Is provided with a contact pin 33 in contact with it.

Here, the detailed description of the configuration of the first connector 20 and the second connector 30 will be referred to the above, and only the configuration of the rotating device will be described. The monitor 110 of the present embodiment is provided with a display unit 117 that is rotatable with respect to the body 111. The body 111 is provided on the support plate 112 supported on the ground, the support plate 112 is provided with a support pillar 114.

The first connector 20 and the second connector 30 are coupled to each other to the support pillar 114. That is, the first connector 20 is installed in the support pillar 114 corresponding to the support plate 112, and the second connector 30 is located in the support pillar 114 corresponding to the display unit 117. Installed and coupled to the first connector 20.

The support pillar 114 is provided with a connecting portion 116, so that the display unit 117 is connected to the support pillar 114. The display unit 117 may rotate 360 degrees with respect to the body portion 111 by rotating together with the connecting portion 116 and the second connector 30. Such a configuration is possible because the first connector 20 and the second connector 30 can be rotated relative to each other.

Meanwhile, in order for the display unit 117 to perform its function, the display unit 117 must receive power and signals from the outside. For this purpose, the power line 119 and the signal line 119 'extend from the inside of the support plate 112 to the outside. Is provided. The power line 119 and the signal line 119 ′ are electrically connected to the first connection line 25 of the first connector 30.

Hereinafter, the connector assembly according to the present invention having the configuration as described above and the rotating device using the same will be described in detail.

First, the connector assembly is coupled and separated with reference to FIG. 7 in detail. In the present invention, the first connector 20 and the second connector 30 constituting the connector assembly are separated from each other, as shown in FIG. In this state, the first connector 20 is positioned at the inlet of the coupling space 32 of the second connector 30. In this state, the hook ball 27 protrudes to the outer surface of the first housing 21 to the maximum.

Next, the first connector 20 and the first connector 20 in the state that the axis of rotation 21 'of the second connector 30 toward the center of rotation hole 31', the first connector 20 and The first connector 20 is moved to the coupling space 32 of the second connector 30 while narrowing the distance between the two connectors 30.

FIG. 7B illustrates a state in which a part of the tip of the first connector 20 enters the coupling space 32. The front end of the first housing 21 enters the coupling space 32 of the second housing 31, and the rotation center shaft 21 ′ partially enters the rotation center hole 31 ′. At this time, the hook ball 27 is slightly entered into the interior of the first housing 21 in a state in which the ball-elastic member 28 slightly compressed. In this state, the contact pattern 23 of the first connector 20 and the contact pin 33 of the second connector 30 are not in contact yet.

When the first connector 20 is further inserted into the coupling space 32 of the second connector 30, the first connector 20 and the second connector 30 in the state shown in FIG. Are completely combined with each other. That is, the hook ball 27 of the first connector 20 meets the hook groove 32 'of the second connector 30 and is seated in the hook groove 32', and the rotation center shaft 21 ' Is completely inserted into the rotation center hole 31 '.

In addition, the contact pin 33 protruding into the coupling space 32 of the second connector 30 is pushed back by the tip of the first housing 21 to be retracted into the second housing 31. . However, the contact pin 33 is pushed by the pin elastic member 41 to be in close contact with the front end surface of the first housing 21, that is, the contact pattern 23.

When the contact pin 33 is in close contact with the contact pattern 23, the contact surface 37 of the contact pin 33 may be seated in the pin groove 23 ′. Of course, when the contact pin 33 is in contact with the pin groove 23 ′, the second connector 30 may be slightly rotated to be seated in the pin groove 23 ′. However, even though the contact surface 37 of the contact pin 33 is not seated in the pin groove 23 ′, electrical contact and signal connection may be performed by close contact between the contact pattern 23 and the contact pin 33.

On the other hand, in the state in which the first connector 20 and the second connector 30 are coupled to each other as described above, the first connector 20 around the rotation center axis 21 'and the rotation center hole 31'. And the second connector 30 may rotate relative to each other. When the relative rotation is used in the rotating device 110, the display unit 117, which is the rotating unit, can be freely rotated with respect to the body 111. That is, the 360 degree rotation of the display unit 117 is possible.

When the 360 degree rotation of the display unit 117 is possible as described above, the display unit 117 can be rotated freely according to the needs of the user. Even if the display unit 117 is rotated as described above, the power line 119 or the signal line 119 'is rotated. No kinks will occur.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

For example, in the illustrated embodiment, the contact pattern 23 is formed in the first housing 21 of the first connector 20, and the contact pin 33 is formed in the second housing 31 of the second connector 30. ) Is installed, but it may be installed in reverse. That is, the contact pin 33 is installed on the first connector 20 and the contact pattern 23 is formed on the second connector 30.

In addition, the coupling space 32 may also be formed in the first connector 20.

In addition, the position of formation of the rotation center axis 21 'and the rotation center hole 31' can also be reversed from that shown in the drawing, and if the design of the dimensional accuracy can be made accurate, the rotation center axis 21 ' And the center of rotation (31 ') is not necessarily used.

20: first connector 21: first housing
21 ': center of rotation 23: contact pattern
23 ': pin groove 25: first connection line
27: hanger ball 28: ball elastic member
30: 2nd connector 31: 2nd housing
32: coupling space 32 ': hanging groove
33: contact pin 35: pin body
35 ': support end 37: contact surface
39: hook end 41: pin elastic member
43: second connection line 110: a rotating device (monitor)
111: body 112: support plate
114: support pillar 116: connecting portion
117: display unit (rotation unit)

Claims (13)

A first connector having a first connection line penetrating the first housing and connected to a power source or an external device;
A second connection line is provided through the second housing and connected to a power source or an external device, and includes a second connector that is rotated 360 degrees with respect to the first connector.
A connector assembly having a circular contact pattern and a contact pin contacting the first housing and the second housing when the first housing and the second housing face each other.
The connector assembly of claim 1, wherein the contact pin is supported by the pin elastic member to closely contact the contact pattern.
3. The connector assembly of claim 2, wherein the contact pattern has pin grooves formed at predetermined intervals, and a tip of the contact pin is electrically connected to the contact pattern and electrically connected to the contact pattern.
The connector assembly of claim 1, wherein the first housing is inserted into the second housing.
The hook groove of claim 4, wherein the hook ball is supported by the ball-elastic member so as to protrude toward the outer surface of the first housing, and the hook groove on which the hook ball is hung along the circumference of the inner surface of the coupling space of the second housing is formed. Connector assembly formed.
The connector assembly of claim 1, wherein a plurality of contact patterns are provided to form concentric circles, and the contact pins are installed at positions corresponding to the respective contact patterns.
The connector assembly of claim 1, wherein the center of rotation of the first and second housings is provided with a center of rotation into which the center of rotation and the center of rotation are inserted so as to correspond to each other.
A body part having a line for connection with an external device,
A rotating part installed to rotate 360 degrees with respect to the body part;
A first connector provided on the body side and having a first connection line penetrating the first housing forming a skeleton and connected to the line;
A second connector provided on the rotating part and coupled to the first housing to form a skeleton and penetrate the second housing to include a second connecting line connected to the rotating part;
The first and second housings facing each other, the rotary device is provided with a circular contact pattern and a contact pin in contact with the contact pattern.
The rotating apparatus of claim 8, wherein the contact pin is supported by the pin elastic member to closely contact the contact pattern.
10. The rotating apparatus of claim 9, wherein a pin groove is formed in the contact pattern at a predetermined interval, and a contact surface having a curved surface is formed at the tip of the contact pin to be in close contact with the contact pattern and electrically connected to the contact pattern.
The method of claim 8, wherein the front end of the second housing is formed with a coupling space is inserted into the first housing and the hook ball is supported by the ball-elastic member so as to protrude to the outer surface of the first housing, the coupling space Rotating device that the hook groove is formed along the circumference of the inner surface of the hook ball.
The rotating apparatus of claim 8, wherein a plurality of contact patterns are provided to form concentric circles, and the contact pins are installed at positions corresponding to the respective contact patterns.
The rotating apparatus of claim 8, wherein the center of rotation of the first and second housings is provided with a center of rotation into which the center of rotation and the center of rotation are inserted.

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