Display device

Abstract

A display device is disclosed. A display device according to the present invention may include: a head having a display panel; a holder that supports the head and is detachably coupled to the head; the connecting piece is positioned between the head part and the bracket and is electrically connected with the head part and the bracket; the connector includes: a terminal assembly coupled to the head and including a terminal; and a pin assembly coupled to the bracket and including a pin aligned with the terminal, the terminal includes: a first rod formed with a first length; and a second rod formed with a second length smaller than the first length and having a diameter smaller than the diameter of the first rod, the pin includes: a first probe pin in contact with the first rod; the second detection pin is in contact with the second rod, and one end of the second detection pin and one end of the first detection pin are located on the same plane.

Description

Technical Field

[0001] The present invention relates to a display device. Background Art

[0002] With the development of information society, the demand for display devices has been continuously increasing in various forms. Correspondingly, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent Display), OLED (Organic Light Emitting Diode) have been studied and used in recent years.

[0003] Among them, the LCD panel can be provided with a TFT (Thin Film Transistor) substrate and a color substrate facing each other with a liquid crystal layer interposed therebetween, and can display images using light provided by a backlight unit. In addition, the OLED panel can display images by depositing an organic layer that can emit light by itself on a substrate formed with a transparent electrode.

[0004] Recently, much research has been conducted on structures for preventing sparks from being generated when power is supplied to a display. Summary of the invention

[0005] Problems to be solved by the invention

[0006] The present invention aims to solve the aforementioned problems and other problems.

[0007] Another object may be to provide a display device having a bracket for supporting a head.

[0008] Another object may be to provide a display device having a bracket for supporting a head and being detachable from the head.

[0009] Another object may be to provide a display device having a stand including a power supply structure for a head.

[0010] Another object may be to provide a display device having a power supply structure capable of preventing sparks from being generated when a head and a bracket are mounted and removed.

[0011] Technical solutions to the problem

[0012] According to one aspect of the present invention for achieving the above-mentioned purpose or another purpose, a display device includes: a head having a display panel; a bracket supporting the head and being detachably coupled to the head; and a connector located between the head and the bracket and electrically connecting the head and the bracket; the connector includes: a terminal assembly coupled to the head and including a terminal; and a pin assembly coupled to the bracket and including a pin aligned with the terminal; the terminal includes: a first rod formed into a first length; and a second rod formed into a second length smaller than the first length and having a diameter smaller than the diameter of the first rod; the pin includes: a first detection pin in contact with the first rod; and a second detection pin in contact with the second rod, and one end of the second detection pin is located on the same plane as one end of the first detection pin.

[0013] Effects of the Invention

[0014] Hereinafter, the effects of the display device of the present invention will be described.

[0015] According to at least one of the embodiments of the present invention, a display device having a stand for supporting a head may be provided.

[0016] According to at least one of the embodiments of the present invention, a display device having a bracket that supports a head and is detachable from the head can be provided.

[0017] According to at least one of the embodiments of the present invention, there may be provided a display device having a stand including a power supply structure for a head.

[0018] According to at least one of the embodiments of the present invention, a display device having a power supply structure capable of preventing sparks from being generated when a head and a bracket are attached and detached can be provided.

[0019] From the following detailed description, the scope of the additional application of the present invention will become apparent. However, those skilled in the art can clearly understand the various changes and modifications within the thought and scope of the present invention, and therefore it should be understood that the specific embodiments such as the detailed description and the preferred embodiments of the present invention are provided only by way of example. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figures 1 to 32 FIG. 1 is a diagram showing an example of a display device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the drawings. The same or similar components are denoted by the same reference numerals regardless of the figure numbers, and repeated description thereof will be omitted.

[0022] The suffixes "module" and "unit" used in the following description for the constituent elements are only given or used interchangeably in consideration of the convenience of writing the specification, and they themselves do not have meanings or functions that distinguish one from another.

[0023] In addition, when describing the embodiments disclosed in this specification, if it is determined that the specific description of the relevant known technology may confuse the main purpose of the embodiments disclosed in this specification, the detailed description will be omitted. In addition, the drawings are only used to help understand the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the drawings, and should be understood to include all changes, equivalents and substitutes within the ideas and technical scope of this specification.

[0024] Terms including ordinal numbers such as "first" and "second" may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

[0025] When a certain component is mentioned as being "connected" or "linked" to another component, it should be understood that it may be directly connected or linked to the other component, but other components may be present between them. Conversely, if a certain component is mentioned as being "directly connected" or "directly linked" to another component, it should be understood that no other components exist between them.

[0026] Unless the context clearly indicates otherwise, an expression in the singular includes an expression in the plural.

[0027] In the present application, terms such as "including" or "having" are only used to specify the existence of features, numbers, steps, actions, constituent elements, parts or their combinations recorded in the specification, and are not intended to exclude the possibility of the existence or addition of one or more other features or numbers, steps, actions, constituent elements, parts or their combinations.

[0028] The directions of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the figures are for convenience of explanation only, and the technical ideas disclosed in this specification are not limited thereto.

[0029] Reference Figure 1 and Figure 2 The display device 1 may include a head 10. The head 10 may display an image. The head 10 may display an image. The head 10 may be referred to as a display 10 or a display unit 10 (display unit).

[0030] The head 10 may include: a first long side LS1; a second long side LS2 opposite to the first long side LS1; a first short side SS1 adjacent to the first long side LS1 and the second long side LS2; and a second short side SS2 opposite to the first short side SS1. On the other hand, for ease of explanation, the lengths of the first long side LS1 and the second long side LS2 are shown to be greater than the lengths of the first short side SS1 and the second short side SS2, but the lengths of the first long side LS1 and the second long side LS2 may also be substantially the same as the lengths of the first short side SS1 and the second short side SS2.

[0031] The direction parallel to the short sides SS1 and SS2 of the head 10 may be referred to as the first direction DR1 or the up-down direction. The direction parallel to the long sides LS1 and LS2 of the head 10 may be referred to as the second direction DR2 or the left-right direction. The direction perpendicular to the long sides LS1 and LS2 and the short sides SS1 and SS2 of the head 10 may be referred to as the third direction DR3 or the front-back direction.

[0032] The direction in which the head 10 displays an image may be referred to as the front F, z, and the opposite direction may be referred to as the rear R. The first short side SS1 side may be referred to as the left side Le, x. The second short side SS2 side may be referred to as the right side Ri. The first long side LS1 side may be referred to as the upper side U, y. The second long side LS2 side may be referred to as the lower side D.

[0033] The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 may be referred to as edges of the head 10. Also, the locations where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 intersect each other may be referred to as corners.

[0034] The position where the first short side SS1 and the first long side LS1 intersect may be a first corner C1. The position where the first short side SS1 and the second long side LS2 intersect may be a second corner C2. The position where the second short side SS2 and the second long side LS2 intersect may be a third corner C3. The position where the second short side SS2 and the first long side LS1 intersect may be a fourth corner C4.

[0035] The display device 1 may include a base 20 , a pole 30 , a support arm 40 , and a coupler 50 .

[0036] The base 20 may have a flat cylinder shape as a whole. The base 20 may be placed on the ground. Wheels 20W may be installed on the bottom surface of the base 20. A plurality of wheels 20W may be provided. The plurality of wheels 20W may be spaced apart from each other along the radial direction of the base 20. The user may freely move the display device 1 placed on the ground through the wheels 20W.

[0037] The column 30 may extend in a vertical direction. The lower end of the column 30 may be coupled to the base 20. The column 30 may be adjacent to the periphery of the base 20.

[0038] The support arm 40 may be coupled to the column 30. The support arm 50 may extend in a direction crossing the column 40. The support arm 40 may connect the head 10 and the column 30. The support arm 40 may connect the head 10 and the column 30. One side of the support arm 40 may be coupled to the upper end of the column 30. The other side of the support arm 40 may be coupled to the rear side of the head 10. The other side of the support arm 40 may be coupled to the connector 50.

[0039] A coupler 50 may be coupled to the back of the head 10. The coupler 50 may be located between the head 10 and the support arm 50.

[0040] The base 20, the column 30, the support arm 40, and the connector 50 may be collectively referred to as brackets 20, 30, 40, 50. Thus, the head 10 may be supported by the brackets 20, 30, 40, 50 and may be spaced apart from the ground toward the upper side.

[0041] The power cord CW may be connected to an external power source. The plug CWa of the power cord CW may be connected to a concentric plug, and the jack CWb of the power cord CW may be connected to the base 20. A battery (not shown) may be provided in the base 20 and / or the column 30 and / or the head 10, and may be charged by the power supplied through the power cord CW, or may be discharged.

[0042] Reference Figure 2 and Figure 3 The head 10 may include a display panel 11 , a middle box 12 , a frame 13 , an end frame 14 and a rear cover 15 .

[0043] The display panel 11 may form the front of the head 10. For example, the display panel 11 may be an OLED panel, an LCD panel, or an LED panel. The display panel 11 may divide an image into a plurality of pixels and match the color, brightness, and saturation of each pixel to output the image. The display panel 11 may be divided into an active area (active area) for displaying an image and a de-active area (de-active area) for not displaying an image. The display panel 11 may generate light corresponding to red, green, or blue according to a control signal.

[0044] The intermediate box 12 may extend around the display panel 11. The horizontal portion 12H may be located in front of the display panel 11. The vertical portion 12V may intersect the horizontal portion 12H and cover the side of the display panel 11. For example, the intermediate box 12 may include a metal or plastic material. The intermediate box 12 may be referred to as a side frame or a guide panel.

[0045] The frame 13 may be located behind the display panel 11. Electronic components such as a PCB (Printed Circuit Board) may be coupled to the back of the frame 13. For example, the frame 13 may include a metal material. The frame 13 may be referred to as a mounting plate or a module cover.

[0046] The end frame 14 may form a periphery of the head 10. The horizontal portion 14H may be located in front of the horizontal portion 12H of the middle box 12. The vertical portion 14V may cover the side of the vertical portion 12V of the middle box 12. For example, the end frame 14 may include a metal or plastic material.

[0047] The rear cover 15 may form a rear side of the head 10. The rear cover 15 may cover the rear of the frame 13 and may be combined with the frame 13.

[0048] Reference Figure 3 and Figure 4 , the backlight unit 110 may be located between the display panel 11 and the frame 13, and may be combined with the frame 13. In this case, the display panel 11 may be referred to as an LCD panel. The backlight unit 110 may include an optical layer 111 and an optical sheet 112. The optical layer 111 may include a substrate 111a, at least one light source 111b, a reflective sheet 111c, and a diffusion plate 111d.

[0049] The substrate 111a may be coupled to the front side of the frame 13. The substrate 111a may have a plate shape, or may be composed of a plurality of straps spaced apart from each other in a vertical direction. At least one light source 111b may be mounted on the substrate 111a. For example, the light source 111b may include a light emitting diode (LED). An electrode pattern for connecting the adapter and the light source 111b may be formed on the substrate 111a. The reflective sheet 111c may be located in front of the substrate 111a. The reflective sheet 111c may have a hole 111h for configuring the light source 111b. The diffuser 111d may be located in front of the reflective sheet 111c. The spacer 111s may support the back side of the diffuser 111d between the reflective sheet 111c and the diffuser 111d.

[0050] The optical sheet 112 may be located in front of the diffuser 111d. The back of the optical sheet 112 may be in close contact with the diffuser 111d, and the front of the optical sheet 112 may be in close contact with or adjacent to the back of the display panel 11. The optical sheet 112 may include at least one of a diffuser sheet or a prism sheet. The bonding portion 112d may be formed at at least one edge of the optical sheet 112.

[0051] Thus, the light from the light source 111b can be provided to the display panel 11 through the diffusion plate 111d and the optical sheet 112. On the other hand, the display panel 11 of the present invention can also be an OLED panel or other types of panels that do not require the aforementioned backlight unit 110.

[0052] Reference Figure 3 and Figure 5 , the backlight unit 110' may be located between the display panel 11 and the frame 13, and may be combined with the frame 13. In this case, the display panel 11 may be referred to as an LCD panel. The backlight unit 110' may include an optical layer 111' and an optical sheet 112. The optical layer 111' may include a substrate 111a', at least one light source 111b', a reflective sheet 111f, and a light guide plate 111e. The light guide plate 111e may be located between the frame 13 and the optical sheet 112, and may be supported by the frame 13.

[0053] The substrate 111a' may be adjacent to the periphery of the light guide plate 111e and may be combined with the frame 13. At least one light source 111b' may be mounted on the substrate 111a'. For example, the light source 111b' may include a light emitting diode (LED). An electrode pattern for connecting the adapter and the light source 111b' may be formed on the substrate 111a'. The reflective sheet 111f may be located between the frame 13 and the light guide plate 111e and may be supported by the frame 13.

[0054] Thus, the light from the light source 111b' can be provided to the display panel 11 through the light guide plate 111e and the optical sheet 112. On the other hand, the display panel 11 of the present invention can also be an OLED panel or other types of panels that do not require the aforementioned backlight unit 110'.

[0055] Reference Figure 6 , the plurality of electronic components PW, MB, TC may be located between the display panel 11 and the back cover 15. For example, the plurality of electronic components PW, MB, TC may be installed on the front of the back cover 15. As another example, the plurality of electronic components PW, MB, TC may be installed on the frame 13 located in front of the back cover 15 (see Figure 3 ) on the front or back side. Examples of multiple electronic components PW, MB, TC are as follows.

[0056] The power supply board PW can supply power to each component of the display device. For example, the power supply board PW can supply power to the display panel 11, the main board MB, the timing controller board TC, and the battery. The main board MB can control the display device. The timing controller board TC can be electrically connected to the display panel 11 through a cable (not shown) and can provide an image signal to the display panel 11.

[0057] The battery can be installed on the head 10. The battery can be built into the head 10. For example, the battery can be installed on the front of the back cover 15 or the back of the frame 13. The battery can be electrically connected to the power supply board PW and can receive power from the power supply board PW. The battery can be provided as a rechargeable battery. In the case where the bracket 20, 30, 40, 50 is installed on the head 10 and supplies power, the power supply board PW can receive power to supply power to the battery, and the battery can be charged. In the case where the bracket 20, 30, 50, 40 is separated from the head 10, the power supply board PW can use the power of the battery to supply power to each component of the head 10. That is, the head 10 can be separated from the bracket 20, 30, 40, 50 and used separately. For example, the battery can be a secondary battery (rechargeable battery).

[0058] Reference Figure 7 and Figure 6 , a mounting groove 15G may be formed in the rear cover 15. The mounting groove 15G may be formed on the back of the rear cover 15. The mounting groove 15G may be formed in the center of the rear cover 15. A connector 50 of the brackets 20, 30, 40, 50 may be combined in the mounting groove 15G. A mounting member 54 may be inserted in the mounting groove 15G.

[0059] The mounting groove 15G may include a first mounting portion 151. The first mounting portion 151 may be a circular plane and may have a size corresponding to the mounting member 54. The back surface of the first mounting portion 151 may be located on the same plane as the back surface of the rear cover 15. The first mounting portion 151 may be aligned with the frame 13 (see FIG. Figure 3 ) is combined. The first mounting portion 151 may be formed with a Figure 3 ) is connected to the first connecting portion 151C, and a fastening member such as a screw can penetrate the first connecting portion 151C and be fastened to the frame 13 (refer to Figure 3 ). For example, two first coupling parts 151C may be provided.

[0060] The mounting groove 15G may include a second mounting portion 152. The second mounting portion 152 may be formed on the back of the first mounting portion 151. The second mounting portion 152 may be formed in the center of the first mounting portion 151. The second mounting portion 152 may be formed in a stepped shape with the first mounting portion 151. The second mounting portion 152 may be formed by punching forward from the back of the first mounting portion 151 (see Fig. 9 ). The second mounting portion 152 may be a circular groove having a diameter smaller than that of the first mounting portion 151. The second portion 5422 of the mounting member 54 may be inserted into the second mounting portion 151. Second coupling portions 152C1 and 152C2 may be formed in the second mounting portion 152. The second coupling portions 152C1 and 152C2 may be holes penetrating the second mounting portion 152 in the front-to-back direction. The second mounting portion 152 may be coupled to the first substrate 63 (see Figure 8 ) is combined. The second mounting portion 152 can be combined with the frame 13 (see Figure 3 That is, a fastening member such as a screw may penetrate the second coupling portions 152C1 and 152C2 and couple to the first substrate 63 (see Figure 8 ) and Framework 13 (reference Figure 3 For example, the second coupling portions 152C1 and 152C2 may include a left second coupling portion 152C1 located on the left side of the first terminal hole 155a and a right second coupling portion 152C2 located on the right side of the second terminal hole 155b.

[0061] The mounting groove 15G may include a third mounting portion 153. The third mounting portion 153 may form a boundary between the first mounting portion 151 and the back cover 15. The third mounting portion 153 may extend along the periphery of the first mounting portion 151. The third mounting portion 153 may protrude rearward from the back of the back cover 15. The third mounting portion 153 may be formed by stamping from the front of the back cover 15 to the rear. The third mounting portion 153 may support the periphery of the mounting member 54 coupled to the mounting groove 15G. The mounting portion 153 may be coupled to the mounting member 54. A side groove 153G coupled to the mounting member 54 may be formed on the inner side surface of the third mounting portion 153. The side grooves 153G may be provided in plurality and may be spaced apart from each other along the radial direction of the third mounting portion 153. For example, the side grooves 153G may include a first side groove 153G1, a second side groove 153G2, and a third side groove 153G3.

[0062] Reference Figure 8 and Figure 7 , the mounting groove 15G may include coupling grooves 154a, 154b. The coupling grooves 154a, 154b may be formed in the second mounting portion 153. The coupling grooves 154a, 154b may be formed in an elliptical shape that is long from top to bottom. The coupling grooves 154a, 154b may be formed by being recessed from the back side of the second mounting portion 153 to the front. A plurality of coupling grooves 154a, 154b may be provided. For example, the coupling grooves 154a, 154b may include a first coupling groove 154a and a second coupling groove 154b. The first coupling groove 154a and the second coupling groove 154b may be spaced apart from each other. The first coupling groove 154a may be located on the left side of the center of the mounting groove 15G, and the second coupling groove 154b may be located on the right side of the center of the mounting groove 15G. The first pin 71 described later may be configured in the first coupling groove 154a, and the second pin 72 described later may be configured in the second coupling groove 154b.

[0063] The extension grooves 154c and 154d may extend from the coupling grooves 154a and 154b to one side. The extension grooves 154c and 154d may include: a first extension groove 154c extending from the first coupling groove 154a to the left; and a second extension groove 154c extending from the second coupling groove 154b to the right. The left second coupling portion 152C1 may be formed in the first extension groove 154c, and the right second coupling portion 152C2 may be formed in the second extension groove 154d.

[0064] The mounting groove 15G may include terminal holes 155a, 155b. The terminal holes 155a, 155b may be formed in the second mounting portion 152. The terminal holes 155a, 155b may be formed by penetrating the second mounting portion 152 in the front-rear direction. The terminal holes 155a, 155b may be located in the center of the coupling grooves 154a, 154b. The terminal holes 155a, 155b may be provided in plural. For example, the terminal holes 155a, 155b may include a first terminal hole 155a and a second terminal hole 155b. The first terminal hole 155a may be formed in the first coupling groove 154a, and the second terminal hole 155b may be formed in the second coupling groove 154b. The first terminal 61 may be located in the first terminal hole 155a. The first terminal 61 may penetrate the first terminal hole 155a, and a portion may be located in the first coupling groove 154a. The second terminal 62 may be located in the second terminal hole 155b. The second terminal 62 may penetrate the second terminal hole 155 b , and a portion may be located in the second coupling groove 154 b .

[0065] Reference Fig. 9 , the first magnet M1 can be located between the back cover 15 and the frame 13. The first magnet M1 can be installed on the back cover 15. The first magnet M1 can be installed on the front of the back cover 15. A first magnet groove into which the first magnet M1 is inserted can be formed on the front of the back cover 15. The groove into which the first magnet M1 is inserted can be formed by being recessed from the front of the second mounting portion 152 to the rear. The groove into which the first magnet M1 is inserted can be located between the first terminal hole 155a and the second terminal hole 155b. Thus, the first magnet M1 can also be located between the first terminal hole 155a and the second terminal hole 155b. The first magnet M1 and the second magnet M2 described later (refer to Fig.17 ) can form an attractive force between the head 10 and the mounting member 54, thereby improving the bonding force between the head 10 and the mounting member 54.

[0066] Reference Fig.10 and Figure 8 The connectors 60 and 70 may include a terminal assembly 60. The terminal assembly 60 may be coupled to the frame 13. The terminal assembly 60 may be coupled to the back of the frame 13. The terminal assembly 60 may be located between the frame 13 and the rear cover 15, and a portion thereof may be exposed to the rear of the rear cover 15 (see FIG. Figure 6 The terminal assembly 60 can be combined with the rear cover 15 (see Figure 8 ).

[0067] The terminal assembly 60 may include a first substrate 63. The first substrate 63 may be located at the back of the frame 13. The first substrate 63 may face the front of the rear cover 15. The first substrate 63 may face the mounting groove 15G of the rear cover 15. The first substrate 63 may be formed in a quadrilateral plate shape having long sides in the left-right direction.

[0068] The first substrate 63 may include a first hole 631 and a second hole 632. The first hole 631 and the second hole 632 may be formed through the first substrate 63 in the front-to-back direction. The first hole 631 may be located on the left side of the first terminal 61, and the second hole 632 may be located on the right side of the second terminal 62. The first hole 631 may be aligned with the left second coupling portion 152C1, and the second hole 632 may be aligned with the right second coupling portion 152C2. A fastening member such as a screw may pass through the left second coupling portion 152C1 and the first hole 631 in sequence to be fastened to the frame 13. A fastening member such as a screw may pass through the right coupling portion 152C2 and the second hole 162 in sequence to be fastened to the frame 13. On the other hand, a pemnut Pn (refer to Fig.11 ) may be located on the front surface of the first substrate 63, and a portion thereof may be inserted into each of the first hole 631 and the second hole 632. In this case, the fastening member sequentially penetrating the left second coupling portion 152C1 and the first hole 631 may be fastened to the rivet nut Pn inserted into the first hole 631, and the fastening member sequentially penetrating the right coupling portion 152C2 and the second hole 632 may be fastened to the rivet nut Pn inserted into the second hole 632.

[0069] The first substrate 63 may include a third hole 633 and a fourth hole 634. The third hole 633 and the fourth hole 634 may be formed through the first substrate 63 in the front-to-back direction. The third hole 633 may be located on the left side of the first hole 631, and the fourth hole 634 may be located on the right side of the second hole 632. The third hole 633 and the fourth hole 634 may face the first mounting portion 151. A fastening member such as a screw may be fastened to the frame 13 by sequentially penetrating the first mounting portion 151 and the third hole 633. A fastening member such as a screw may be fastened to the frame 13 by sequentially penetrating the first mounting portion 151 and the fourth hole 634. In this case, holes may be formed in the first mounting portion 151 that are aligned with the third hole 633 and the fourth hole 634, respectively. On the other hand, the rivet nut Pn (refer to Fig.11 ) may be located on the front surface of the first substrate 63, and a portion thereof may be inserted into each of the third hole 633 and the fourth hole 634. In this case, the fastening member sequentially penetrating the first mounting portion 515 and the third hole 633 may be fastened to the rivet nut Pn inserted into the third hole 633, and the fastening member sequentially penetrating the first mounting portion 515 and the fourth hole 634 may be fastened to the rivet nut Pn inserted into the fourth hole 634.

[0070] The first substrate 63 may include a fifth hole 635. The fifth hole 635 may be formed by penetrating the first substrate 63 in the front-to-back direction. The fifth hole 635 may be located between the first hole 631 and the second hole 632. The fifth hole 635 may be located between the first terminal 61 and the second terminal 62. The fifth hole 635 may face the first magnet M1. A fastening member such as a screw may penetrate the fifth hole 635 and contact the first magnet M1. Thus, it is possible to prevent the first magnet M1 from being moved from the first magnet slot (refer to Fig. 9 ) is disengaged and the position of the first magnet M1 can be fixed.

[0071] The first substrate 63 may be electrically connected to the power supply board PW, and may supply power to the power supply board PW.

[0072] Reference Fig.11 , Fig.12 as well as Fig.10 The terminal assembly 60 may include a first terminal 61. The first terminal 61 may be mounted on the first substrate 63. The first terminal 61 may be located between the first hole 631 and the fifth hole 635. The terminal assembly 60 may include a second terminal 62. The second terminal 62 may be mounted on the first substrate 63. The second terminal 62 may be located between the second hole 632 and the fifth hole 635.

[0073] The first terminal 61 may include a first rod 612. For example, the first rod 612 may be a metal terminal. The first rod 612 may be formed in a cylindrical shape. The first rod 612 may extend in the front-rear direction. The first rod 612 may include a first head 612H and a first tail 612T extending from the first head 612H. The diameter of the first tail 612T may be smaller than the diameter of the first head 612H. The first tail 612T may be a portion mounted on the first substrate 63. The first head 612H may protrude backward from the back of the first substrate 63.

[0074] The first terminal 61 may include a second rod 613. For example, the second rod 613 may be a metal terminal. The second rod 613 may be formed in a cylindrical shape. The second rod 613 may extend in the front-rear direction. The second rod 613 may be separated from the first rod 612 up and down, and may overlap with the first rod 612 up and down. The second rod 613 may include a second head 613H and a second tail 613T extending from the second head 613H. The diameter of the second tail 613T may be smaller than the diameter of the second head 613H. The second head 613H may be formed in the same size and shape as the first head 612H, and the second tail 613T may be formed in the same size and shape as the first tail 612T. The second tail 613T may be a part mounted on the first substrate 63. The second head 613H may protrude backward from the back of the first substrate 63.

[0075] The first terminal 61 may include a third rod 614. For example, the third rod 614 may be a metal terminal. The third rod 614 may be formed in a cylindrical shape. The third rod 614 may extend in the front-rear direction. The third rod 614 may be located between the first rod 612 and the second rod 613. At least a portion of the third rod 614 may overlap the first rod 612 and the second rod 613 up and down. The center of the third rod 614 may be eccentrically arranged on the left side of an imaginary straight line AL1 connecting the center of the first rod 612 and the center of the third rod 613 (refer to Fig.10 ). The third rod 614 may include a third head 614H and a third tail 614T extending from the third head 614H. The third tail 614T may be a portion mounted on the first substrate 63. The third head 614H may protrude backward from the back of the first substrate 63. The diameter of the third tail 614T may be smaller than the diameter of the third head 614H. The diameter of the third head 614H may be smaller than the diameter of the first head 612H and the second head 613H. The diameter of the third tail 614T may be smaller than the diameter of the first tail 612T and the second tail 613T.

[0076] The first terminal 61 may include a first cover 611. The first cover 611 may accommodate a plurality of rods 612, 613, and 614. For example, the first cover 611 may be formed of an insulating material. The first cover 611 may include a first surface 611S1 and a second surface 611S2 located on the opposite side of the first surface 611S1 and in contact with the back surface of the first substrate 63. The first cover 611 may be configured to protrude rearward on the back surface of the first substrate 63. The first surface 611S1 of the first cover 611 may be exposed to the rear of the rear cover 15 through the first terminal hole 155a of the rear cover 15 (see Figure 6 and Figure 7 ).

[0077] The first cover body 611 may include a first rod hole 6111. The first rod hole 6111 may be formed through the first surface 611S1 and the second surface 611S2 of the first cover body 611 in the front-to-back direction. The first rod 612 may be inserted into the first rod hole 611. The first head 612H of the first rod 612 may be inserted into the first rod hole 611. At this time, one surface of the first head 612H may be located on the same plane as the first surface 611S1 of the first cover body 611, and the other surface of the first head 612H may be located on the same plane as the second surface 611S2 of the first cover body 611. The first tail portion 612T may extend forward from the other surface of the first head portion 612H. The first tail portion 612T may be configured to protrude rearward relative to the second surface 611S2 of the first cover body 611.

[0078] The first cover body 611 may include a second rod hole 6112. The second rod hole 6112 may be formed through the first surface 611S1 and the second surface 611S2 of the first cover body 611 in the front-to-back direction. The second rod 613 may be inserted into the second rod hole 6112. The second head 613H of the second rod 613 may be inserted into the second rod hole 6112. At this time, one surface of the second head 613H may be located on the same plane as the first surface 611S1 of the first cover body 611, and the other surface of the second head 613H may be located on the same plane as the second surface 611S2 of the first cover body 611. The second tail 613T may extend forward from the other surface of the second head 613H. The second tail 613T may be configured to protrude rearward relative to the second surface 611S2 of the first cover body 611. The second rod hole 6112 may be located below the first rod hole 6111, and may overlap with the first rod hole 6111 up and down. The center of the second rod hole 6112 and the center of the first rod hole 6111 may be located on a straight line.

[0079] The first cover body 611 may include a first groove 611G. The first groove 611G may be formed on a first surface 611S1 of the first cover body 611. The first groove 611G may be formed by being recessed forward from the first surface 611S1 of the first cover body 611. The first groove 611G may be located between the first rod hole 6111 and the second rod hole 6112. The third surface 611S3 of the first cover body 611 may be located in the first groove 611G. The third surface 611S3 may be arranged in a stepped shape with the first surface 611S1. The third surface 611S3 may be located further forward than the first surface 611S1.

[0080] The first cover body 611 may include a third rod hole 6113. The third rod hole 6113 may be located between the first rod hole 6111 and the second rod hole 6112. The third rod hole 6113 may be formed in the first groove 611G. The third rod hole 6113 may be formed through the third surface 611S3 and the second surface 611S2 in the front-back direction. The third rod 614 may be inserted into the third rod hole 6113. The third head 614H of the third rod 614 may be inserted into the third rod hole 6113. At this time, when one surface of the third head 614H may be located on the same plane as the third surface 611S3 of the first cover body 611, the other surface of the third head 614H3 ​​may be located on the same plane as the second surface 611S2 of the first cover body 611. The third tail portion 614T may extend forward from the other surface of the third head portion 614H. The third tail portion 614T may be configured to protrude rearward relative to the second surface 611S2 of the first cover body 611. A portion of the third rod hole 6113 may overlap the first rod hole 6111 and the second rod hole 6112. The center of the third rod hole 6113 may be eccentrically disposed on the left side of a straight line connecting the center of the first rod hole 6111 and the center of the second rod hole 6112.

[0081] The second terminal 62 may include a fourth rod 622. For example, the fourth rod 622 may be a metal terminal. The fourth rod 622 may be formed in a cylindrical shape. The fourth rod 622 may extend in the front-rear direction. The fourth rod 622 may include a fourth head 622H and a fourth tail 622T extending from the fourth head 622H. The diameter of the fourth tail 622T may be smaller than the diameter of the fourth head 622H. The fourth tail 622T may be a portion mounted on the first substrate 63. The fourth head 622H may protrude backward from the back of the first substrate 63.

[0082] The second terminal 62 may include a fifth rod 623. For example, the fifth rod 623 may be a metal terminal. The fifth rod 623 may be formed in a cylindrical shape. The fifth rod 623 may extend in the front-rear direction. The fifth rod 623 may be separated from the fourth rod 622 up and down, and may overlap with the fourth rod 622 up and down. The fifth rod 623 may include a fifth head 623H and a fifth tail 623T extending from the fifth head 623H. The diameter of the fifth tail 623T may be smaller than the diameter of the fifth head 623H. The fifth head 623H may be formed in the same size and shape as the fourth head 622H, and the fifth tail 623T may be formed in the same size and shape as the fourth tail 622T. The fifth tail 623T may be a part mounted on the first substrate 63. The fifth head 623H may protrude backward from the back of the first substrate 63.

[0083] The second terminal 62 may include a sixth rod 624. For example, the sixth rod 624 may be a metal terminal. The sixth rod 624 may be formed in a cylindrical shape. The sixth rod 624 may extend in the front-rear direction. The sixth rod 624 may be located between the fourth rod 622 and the fifth rod 623. At least a portion of the sixth rod 624 may overlap the fourth rod 622 and the fifth rod 623 up and down. The center of the sixth rod 624 may be eccentrically arranged on the right side of an imaginary straight line AL2 connecting the center of the fourth rod 622 and the center of the fifth rod 623 (refer to Fig.10 ). The sixth rod 624 may include a sixth head 624H and a sixth tail 624T extending from the sixth head 624H. The sixth tail 624T may be a portion mounted on the first substrate 63. The sixth head 624H may protrude backward from the back side of the first substrate 63. The diameter of the sixth tail 624T may be smaller than the diameter of the sixth head 624H. The diameter of the sixth head 624H may be smaller than the diameters of the fourth head 622H and the fifth head 623H. The diameter of the sixth tail 624T may be smaller than the diameters of the fourth tail 622T and the fifth tail 623T.

[0084] The second terminal 62 may include a second cover 621. The second cover 621 may accommodate a plurality of rods 622, 623, and 624. For example, the second cover 621 may be formed of an insulating material. The second cover 621 may include a fourth surface 621S1 and a fifth surface 621S2 located on the opposite side of the fourth surface 621S1 and in contact with the back surface of the first substrate 63. The second cover 621 may be configured to protrude rearward relative to the back surface of the first substrate 63. The fourth surface 621S1 of the second cover 621 may be exposed to the rear of the rear cover 15 through the second terminal hole 155b of the rear cover 15 (see Figure 6 and Figure 7 ).

[0085] The second cover body 621 may include a fourth rod hole 6211. The fourth rod hole 6211 may be formed through the fourth surface 621S1 and the fifth surface 621S2 of the second cover body 621 in the front-to-back direction. The fourth rod 622 may be inserted into the fourth rod hole 6211. The fourth head 622H of the fourth rod 622 may be inserted into the fourth rod hole 6211. At this time, one surface of the fourth head 622H may be located on the same plane as the fourth surface 621S1 of the second cover body 621, and the other surface of the fourth head 622H may be located on the same plane as the fourth surface 621S2 of the second cover body 621. The fourth tail portion 622T may extend forward from the other surface of the fourth head portion 622H. The fourth tail portion 622T may be configured to protrude rearward relative to the fifth surface 621S2 of the second cover body 621.

[0086] The second cover body 621 may include a fifth rod hole 6212. The fifth rod hole 6212 may be formed by penetrating the fourth surface 621S1 and the fifth surface 621S2 of the second cover body 621 in the front-to-back direction. The fifth rod 623 may be inserted into the fifth rod hole 6212. The fifth head 623H of the fifth rod 623 may be inserted into the fifth rod hole 6212. At this time, one surface of the fifth head 623H may be located on the same plane as the fourth surface 621S1 of the second cover body 621, and the other surface of the fifth head 623H may be located on the same plane as the fifth surface 621S2 of the second cover body 621. The fifth tail 623T may extend forward from the other surface of the fifth head 623H. The fifth tail 623T may be configured to protrude rearward relative to the fifth surface 621S2 of the second cover body 621. The fifth rod hole 6212 may be located below the fourth rod hole 6211, and may overlap with the fourth rod hole 6211 up and down. The center of the fifth rod hole 6212 and the center of the fourth rod hole 6211 may be located on a straight line.

[0087] The second cover body 621 may include a second groove 621G. The second groove 621G may be formed on the fourth surface 621S1 of the second cover body 621. The second groove 621G may be formed by being recessed forward from the fourth surface 621S1 of the second cover body 621. The second groove 621G may be located between the fourth rod hole 6211 and the fifth rod hole 6212. The sixth surface 621S3 of the second cover body 621 may be located at the second groove 621G. The sixth surface 621S3 may be arranged in a stepped shape with the fourth surface 621S1. The sixth surface 621S3 may be located at a position further forward than the fourth surface 621S1.

[0088] The second cover body 621 may include a sixth rod hole 6213. The sixth rod hole 6213 may be located between the fourth rod hole 6211 and the fifth rod hole 6212. The sixth rod hole 6213 may be formed in the second groove 621G. The sixth rod hole 6213 may be formed to penetrate the sixth surface 62S3 and the fifth surface 621S2 in the front-back direction. The sixth rod 624 may be inserted into the sixth rod hole 6213. The sixth head 624H of the sixth rod 624 may be inserted into the sixth rod hole 6213. At this time, one surface of the sixth head 624H may be located on the same plane as the sixth surface 621S3 of the second cover body 621, and the other surface of the sixth head 624H may be located on the same plane as the fifth surface 621S2 of the second cover body 621. The sixth tail 624T may extend forward from the other surface of the sixth head 624H. The sixth tail 624T may be configured to protrude rearward relative to the fifth surface 621S2 of the second cover body 621. A portion of the sixth rod hole 6213 may overlap the fourth rod hole 6211 and the fifth rod hole 6212. The center of the sixth rod hole 6213 may be eccentrically disposed on the right side of a straight line connecting the center of the fourth rod hole 6211 and the center of the fifth rod hole 6212.

[0089] Reference Fig.13 , Fig.14 as well as Fig.11 , the first terminal 61 and the second terminal 62 may be mounted on the first substrate 63. The first substrate 63 may include rod holes 636a, 636b, 636c for mounting the rods 612, 613, 614 of the first terminal 61. The rod holes 636a, 636b, 636c may be formed through the first substrate 63 in the front-to-back direction. The rod holes 636a, 636b, 636c may be located between the first hole 631 and the fifth hole 635. The rod holes 636a, 636b, 636c may be arranged spaced apart from each other up and down between the first hole 631 and the fifth hole 635. The first rod hole 636a, the third rod hole 636c, and the second rod hole 636b may be formed sequentially from top to bottom. The first tail 612T may be inserted into the first rod hole 636a. The second tail 613T may be inserted into the second rod hole 636b. The third tail 614T may be inserted into the third rod hole 636c. Thus, the first terminal 61 can be mounted on the first substrate 63 .

[0090] The first substrate 63 may include rod holes 637a, 637b, 637c for mounting the rods 622, 623, 624 of the second terminal 62. The rod holes 637a, 637b, 637c may be formed through the first substrate 63 in the front-rear direction. The rod holes 637a, 637b, 637c may be located between the second hole 632 and the fifth hole 635. The rod holes 637a, 637b, 637c may be arranged spaced apart from each other up and down between the second hole 632 and the fifth hole 635. The fourth rod hole 637a, the sixth rod hole 637c, and the fifth rod hole 637b may be formed sequentially from top to bottom. The fourth tail 622T may be inserted into the fourth rod hole 637a. The fifth tail 623T may be inserted into the fifth rod hole 637b. The sixth tail 624T may be inserted into the sixth rod hole 637c. Thus, the second terminal 62 may be mounted on the first substrate 63. Ends of the first to sixth tail portions 612T, 613T, 614T, 622T, 623T, and 624T may protrude forward from the front surface of the first substrate 63 .

[0091] Reference Fig.15 , Fig.16 as well as Figure 6 , the coupler 50 may include a joint 51. The joint 51 may have a table tennis racket shape as a whole. The joint 51 may be combined with the support arm 40. The joint 51 may support a ball hinge 52. The joint 51 may support the ball hinge 52 to be rotatable.

[0092] The joint 51 may include an upper portion 511 and an upper protrusion 512. The upper portion 511 may have a circular plate shape. The upper protrusion 512 may protrude downward from the upper portion 511. The upper protrusion 512 may protrude downward from at least a portion of the upper portion 511. The upper protrusion 512 may extend along an arc of the upper portion 511. The upper protrusion 512 may extend along a circumferential direction of the upper portion 511. The upper portion 511 and the upper protrusion 512 may be formed as one body.

[0093] The joint 51 may include a lower portion 513 and a lower protrusion 514. The lower portion 513 may have a circular plate shape. The lower portion 513 may be located below the upper portion 511. The lower portion 513 may be opposite to the upper portion 511 relative to the ball hinge 52. The lower protrusion 514 may protrude upward from the lower portion 513. The lower protrusion 514 may protrude upward from at least a portion of the lower portion 513. The lower protrusion 514 may extend along the arc of the lower portion 513. The lower protrusion 514 may extend along the circumferential direction of the lower portion 513. The lower portion 513 and the lower protrusion 514 may be formed as one body. The lower protrusion 514 may face the upper protrusion 512. The lower protrusion 514 may contact the upper protrusion 512. A fastening member such as a screw may be fastened to the upper protrusion 512 through the lower protrusion 514. Thus, the upper portion 511, the upper protrusion 512, the lower portion 513, and the lower protrusion 514 may be combined with each other.

[0094] The joint 51 may include a rear portion. The rear portion may protrude rearward from the upper portion 511 and may be combined with the support arm 50. A portion of the rear portion may be seated on the lower protrusion 514. The joint cover 515 may be combined with the rear portion and may cover the rear portion.

[0095] The coupler 50 may include a ball hinge 52. The ball hinge 52 may be rotatably coupled to the joint 51. The ball hinge 52 may be located between the upper portion 511 and the lower portion 513. The ball hinge 52 may include a body 521, a ring 522, and a ball 523. The body 521, the ring 522, and the ball 523 may be formed as one body.

[0096] The body 521 may extend in the front-rear direction and may have a cylindrical or columnar shape. The body 521 may be located between the ring 522 and the ball 523. The body 521 may include a body groove 521g formed inside the body 521 and extending along the length direction of the body 521.

[0097] The ring 522 may extend in a direction intersecting the length direction of the body 521. The ring 522 may extend in the up-down direction. The ring 522 may be formed in a cylindrical shape with a through hole formed in the center. The ring 522 may be located between the upper portion 511 and the lower portion 513. The upper pin of the upper portion 511 and the lower pin of the lower portion 513 may be inserted into the through hole of the ring 522. The ball hinge 52 may rotate around the upper pin and the lower pin.

[0098] The ball 523 may be coupled to the end of the body 521 and may be opposite to the ring 522 relative to the body 521. The ball 523 may be located outside the joint 51. The ball 523 may be formed in a spherical shape, and its front end may be cut and formed flat. The ball 523 may include a ball groove 523g formed by being recessed backward from the front end of the ball 523. The ball groove 523g may be connected to the body groove 521g. The power transmission part 81 may be configured in the grooves 521g and 523g of the ball hinge 52.

[0099] The connector 50 may include a cover 53. The cover 53 may cover the ball 523. The ball 523 may be disposed inside the cover 53. The front of the cover 53 may be open, and a hole may be formed on the back thereof. The rear end portion of the ball 513 or the body 521 may be disposed in the hole formed on the back of the cover 53. The diameter of the hole formed on the back of the cover 53 may be smaller than the diameter of the ball 523 and larger than the diameter of the body 521. Thus, the ball hinge 52 may not be detached from the cover 53.

[0100] Brackets 531 and 532 may be disposed inside the cover 53. Brackets 531 and 532 may surround the periphery of the ball 523. Brackets 531 and 532 may contact the surface of the ball 523. Brackets 531 and 532 may include a first bracket 531 and a second bracket 532. The first bracket 531 may contact the back side of the cover 53. The second bracket 532 may be located in front of the first bracket 531. The second bracket 532 may be combined with the first bracket 531 by fastening members such as bolts and nuts. Brackets 531 and 532 may contact the inner side of the cover 53. Brackets 531 and 532 may be formed to have a diameter corresponding to the inner diameter of the cover 53. The cover 53, the mounting member 54, and the head 10 may rotate relative to the ball hinge 42.

[0101] The connector 50 may include a mounting member 54. The mounting member 54 may be coupled to the rear cover 15 (see Figure 6 The mounting member 54 can be coupled to the mounting groove 15G of the rear cover 15 (see Figure 6). The mounting member 54 may be detachably coupled to the mounting groove 15G. The mounting member 54 may include a rear mounting member 541 and a front mounting member 542. The rear mounting member 541 may be located behind the front mounting member 542. The rear mounting member 541 may be located between the front mounting member 542 and the cover 53. The front mounting member 542 may be located between the rear cover 15 and the rear mounting member 541.

[0102] The rear mounting member 541 may have a circular plate shape. The hole 5411 may be formed through the rear mounting member 541 in the front-to-back direction and may be located at the center of the rear mounting member 541. The diameter of the hole 5411 of the rear mounting member 541 may be smaller than the diameter of the front opening of the cover 53. Through the hole 5411 of the rear mounting member 541, the internal space of the mounting member 54 and the internal space of the cover 53 may be communicated.

[0103] The first fastening hole 5412 may be formed by penetrating the rear mounting member 451 in the front-to-back direction. The first fastening hole 5412 may be provided in plurality. The plurality of first fastening holes 5412 may be spaced apart from each other along the periphery of the hole 5411. The plurality of first fastening holes 5412 may be arranged adjacent to the periphery of the hole 5411. For example, four first fastening holes 5411 may be provided. A fastening member such as a screw may penetrate the first fastening hole 5412 and be fastened to the cover 53. Thus, the cover 53 and the rear mounting member 541 may be combined with each other.

[0104] The side portion 5413 of the rear mounting member 541 may protrude forward from the outer periphery of the rear mounting member 541. The side portion 5413 may extend along the periphery of the rear mounting member 541. The side grooves 5413g1, 5413g2, 5413g3 may be formed on the side portion 5413, and may be formed by being recessed backward from the side portion 5413. The side grooves 5413g1, 5413g2, 5413g3 may be provided in plurality. The plurality of side grooves 5413g1, 5413g2, 5413g3 may be spaced apart from each other along the periphery of the rear mounting member 541. The plurality of side grooves 5413g1, 5413g2, 5413g3 may include a first side groove 5413g1, a second side groove 5413g2, and a third side groove 5413g3.

[0105] The second fastening hole 5414 may be formed by penetrating the rear mounting member 541 in the front-to-back direction. The second fastening hole 5414 may be provided in plurality. The plurality of second fastening holes 5414 may be located between the plurality of first fastening holes 5412. For example, the plurality of second fastening holes 5414 may be provided as two second fastening holes 5414, and may be opposite to each other relative to the hole 5411. The two second fastening holes 5414 may be spaced apart from each other in the left-right direction. The two second fastening holes 5414 may be arranged adjacent to the outer periphery of the hole 5411.

[0106] The third fastening hole 5415 may be formed through the rear mounting member 541 in the front-rear direction. The third fastening hole 5415 may be disposed adjacent to the side portion 5413. A plurality of third fastening holes 5415 may be provided. The plurality of third fastening holes 5415 may be spaced apart from each other in the circumferential direction of the rear mounting member 541.

[0107] The front mounting member 542 may have a disc shape. The front mounting member 542 may be located in front of the rear mounting member 541. The front mounting member 542 may be combined with the rear mounting member 541. The front mounting member 542 may include a first portion 5421 and a second portion 5422 protruding forward from the first portion 5421. The second portion 5422 may be located in the center of the first portion 5421. The second portion 5422 may be formed by stamping forward from the central area of ​​the first portion 5421. The first portion 5421 may face the first mounting portion 151, and the second portion 5422 may face the second mounting portion 152. In the case where the mounting member 54 is combined with the mounting groove 15G of the rear cover 15, the first portion 5421 may contact the back surface of the first mounting portion 151, and the second portion 5422 may contact the back surface of the second mounting portion 152.

[0108] The fastening hole 5423 may be formed through the front mounting member 542 in the front-to-back direction. The fastening hole 5423 may be formed in the first portion 5421. The fastening hole 5423 may be arranged adjacent to the outer periphery of the first portion 5421. The fastening hole 5423 may be provided in plurality. The plurality of fastening holes 5423 may be spaced apart from each other along the periphery of the front mounting member 542. The fastening hole 5423 may be aligned with the third fastening hole 5415 of the rear mounting member 541. A fastening member such as a screw may penetrate the fastening hole 5423 of the front mounting member 542 and be fastened to the third fastening hole 5415 of the rear mounting member 541. Thus, the rear mounting member 541 and the front mounting member 542 may be combined.

[0109] A first hole 5424 may be formed in the second portion 5422. The first hole 5424 may be formed by penetrating the second portion 5422 in the front-to-back direction. The first hole 5424 may be aligned with the terminal hole 155a. A first pin 71 may be disposed in the first hole 5424. The first pin 71 may penetrate the first hole 5424 and protrude in front of the front mounting member 542. A second hole 5425 may be formed in the second portion 5422. The second hole 5425 may be formed by penetrating the second portion 5422 in the front-to-back direction. The second hole 5425 may be aligned with the terminal hole 155b. The second hole 5425 may be spaced apart from the first hole 5424 to the left and right. A second pin 72 may be disposed in the second hole 5425. The second pin 72 may penetrate the second hole 5425 and protrude in front of the front mounting member 542.

[0110] A top latch 543 may be located between the rear mounting member 541 and the front mounting member 542. The top latch 543 may be located between the rear mounting member 541 and the first portion 5421 of the front mounting member 542. The top latch 543 may include a top body 5431 and a first protrusion 5432 extending from the top body 5431. The top body 5431 may be located between the rear mounting member 541 and the front mounting member 542. The first protrusion 5432 may be located in the first side groove 5413g1 and may protrude toward the outside of the mounting member 54 through the first side groove 5413g1. The first protrusion 5432 may be aligned with the first side groove 153G1 of the mounting groove 15G (refer to Fig. 9 ) and can be inserted into the first side groove 153G1 (refer to Fig. 9 ). The first elastic member 5433 may be fixed to the top body 5431. For example, a plurality of first elastic members 5433 may be provided. One end of the first elastic member 5433 may contact the lower end of the first protrusion 5432, and the other end of the first elastic member 5433 may contact the first support member 5416 of the rear mounting member 431. Thus, the top latch 543 may move in the radial direction of the mounting member 54 and / or in the direction toward the center of the mounting member 54. When the top latch 543 moves in the radial direction of the mounting member 54, the first protrusion 5432 may be inserted into the first side groove 153G1 of the mounting groove 15G (refer to Fig. 9 ). Thus, the mounting member 54 can be fixed to the rear cover 15.

[0111] A bottom latch 544 may be located between the rear mounting member 541 and the front mounting member 542. The bottom latch 544 may be located between the rear mounting member 541 and the first portion 5421 of the front mounting member 542. The bottom latch 544 may include a bottom body 5441, a second protrusion 5442 extending from the bottom body 5441, and a third protrusion 5443 extending from the bottom body 5441 and spaced apart from the second protrusion 5442. The second protrusion 5442 may be located in the second side groove 5413g2 of the side portion 5413 and may protrude toward the outside of the mounting member 54 through the second side groove 5413g2. The third protrusion 5443 may be located in the third side groove 5413g3 of the side portion 5413 and may protrude toward the outside of the mounting member 54 through the third side groove 5413g3. The second protrusion 5442 may be aligned with the second side groove 153G2 (refer to Fig. 9 ) and can be inserted into the second side groove 153G2 (refer to Fig. 9 The third protrusion 5443 can be aligned with the third side groove 153G3 (refer to Figure 8 ) and can be inserted into the third side groove 153G3 (refer to Figure 8). The bottom body 5441 may be located between the rear mounting member 541 and the first portion 5421 of the front mounting member 542 , and may connect the second protrusion 5442 and the third protrusion 5443 .

[0112] The second elastic member 5444 may be fixed to the bottom body 5441. The second elastic member 5444 may be arranged adjacent to the second protrusion 5442. One end of the second elastic member 5444 may contact the second protrusion 5442, and the other end of the second elastic member 5444 may contact the second support member 5417 of the rear mounting member 431. The third elastic member 5445 may be fixed to the bottom body 5441. The third elastic member 5445 may be arranged adjacent to the third protrusion 5443. One end of the third elastic member 5445 may contact the third protrusion 5443, and the other end of the third elastic member 5445 may contact the third support member 5418 of the rear mounting member 431. Thus, the bottom latch 544 may move in a radial direction of the mounting member 54 and / or in a direction toward the center of the mounting member 54. When the bottom latch 544 moves in a radial direction of the mounting member 54, the second protrusion 5442 and the third protrusion 5443 may be respectively inserted into the second side groove 153G2 (refer to Fig. 9 ) and the third side groove 153G3 (refer to Figure 8 ). Thus, the mounting member 54 can be fixed to the rear cover 15.

[0113] Reference Fig.17 , the second magnet M2 may be located at the mounting member 54. The second magnet M2 may be located between the rear mounting member 541 and the front mounting member 542. The second magnet M2 may be fixed to the front mounting member 542. The second magnet M2 may face the first magnet M1 across the front mounting member 542. The second magnet M2 may be located at the second portion 5422 of the front mounting member 542.

[0114] The second magnet M2 and the first magnet M1 (refer to Fig. 9 ) can form an attractive force between the head 10 and the mounting member 54, thereby improving the bonding force between the head 10 and the mounting member 54.

[0115] Reference Fig.18 and Fig.16 , the cover 53 may be located behind the rear mounting member 541 and may be coupled to the rear mounting member 541. A fastening member such as a screw may be fastened to the cover 53 through the first fastening hole 5412 of the rear mounting member 541. The ball 523 may be located inside the cover 53 and may be fixed by the brackets 531, 531. The ball groove 523g of the ball 523 may be aligned with the hole 5411 of the rear mounting member 541 and may communicate with each other.

[0116] The power transmission part 81 can be electrically connected to an external power source through a cable 82, and can transmit the external power to the connecting parts 60 and 70. For example, the power transmission part 81 can be a rotating connecting part such as a slip ring. The power transmission part 81 can be located in the ball groove 523g of the ball 523. The power transmission part 81 can pass through the hole 5411 of the rear mounting part 541 and be located between the rear mounting part 541 and the front mounting part 542. The cable 83 can be connected to the power transmission part 81 and can extend to the inside of the support arm 40 through the grooves 521g and 523g of the ball hinge 52.

[0117] Reference Fig.19 and Fig.16 , the connectors 60, 70 may include a pin assembly 70. The pin assembly 70 may be coupled to the mounting member 54. The pin assembly 70 may be located between the rear mounting member 541 and the front mounting member 542, and a portion thereof may protrude forward of the front mounting member 542 (see Fig.16 ). The pin assembly 70 can be combined with the terminal assembly 60 (refer to Figure 6 ). The pin assembly 70 may be electrically connected to the terminal assembly 60.

[0118] The pin assembly 70 may include a second substrate 73. The second substrate 73 may be formed in a plate shape having a long side in the left-right direction. The second substrate 73 may be located between the rear mounting member 541 and the front mounting member 541, and may be combined with the rear mounting member 541. A fastening member such as a screw may penetrate the second substrate 73 and be fastened to the second fastening hole 5414 of the rear mounting member 541. The second substrate 73 may face the hole 5411 of the rear mounting member 541. That is, when viewed from the rear of the rear mounting member 541, the second substrate 73 may be seen through the hole 5411 of the rear mounting member 541. The second substrate 73 may face the second portion 5422 of the front mounting member 542. The terminals 811 and 812 of the power transmission unit 81 may be mounted on the second substrate 73. The power transmission unit 81 may be mounted on the second substrate 73 at the rear of the second substrate 73.

[0119] Reference Fig. 20 and Fig.19 , the second substrate 73 may include a first fastening hole 737 and a second fastening hole 738. The first fastening hole 737 and the second fastening hole 738 may be formed through the second substrate 73 in the front-to-back direction. The first fastening hole 737 may be disposed adjacent to the left edge of the first substrate 73, and the second fastening hole 738 may be disposed adjacent to the right edge of the second substrate 73. The first fastening hole 737 may be aligned with the left second fastening hole 5414 of the rear mounting member 541, and the second fastening hole 738 may be aligned with the right second fastening hole 5414 of the rear mounting member 541 (refer to Fig.16). A fastening member such as a screw may penetrate through the first and second fastening holes 737 of the second substrate 73 and be fastened to the second fastening hole 5414 of the rear mounting member 541 .

[0120] The second substrate 73 may include connection holes 7391 and 7392. The connection holes 7391 and 7392 may be located between the first fastening hole 737 and the second fastening hole 738. The connection holes 7391 and 7392 may be located at the center of the second substrate 73. The connection holes 7391 and 7392 may be long holes formed long in the up-down direction. Thus, even in the pivoting action of the head 10, the connection between the second substrate 73 and the power transmission part 81 may be maintained. The connection terminals 811 and 812 of the power transmission part 81 may be connected to the connection holes 7391 and 7392. A plurality of connection holes 7391 and 7392 may be provided. For example, the connection holes 7391 and 7392 may include a first connection hole 7391 and a second connection hole 7392 located below the first connection hole 7391. The first connection terminal 811 of the power transmission unit 81 may be inserted into the first connection hole 7391 , and the second connection terminal 812 of the power transmission unit 81 may be inserted into the second connection hole 7392 .

[0121] The second substrate 73 may include a first hole 731. The first hole 731 may be formed by penetrating the second substrate 73 in the front-to-back direction. The first hole 731 may be a circular hole. The first hole 731 may be located on the left side with the connection holes 7391 and 7392 as a reference. The first hole 731 may be located between the first fastening hole 737 and the connection holes 7391 and 7392. The first detection pin 711 may be inserted and installed in the first hole 731.

[0122] The second substrate 73 may include a second hole 732. The second hole 732 may be formed by penetrating the second substrate 73 in the front-to-back direction. The second hole 732 may be a circular hole. The second hole 732 may be formed to be the same size and shape as the first hole 731. The second hole 732 may be located on the left side with the connecting holes 7391 and 7392 as a reference. The second hole 732 may be located between the first fastening hole 737 and the connecting holes 7391 and 7392. The second hole 732 may be separated from the first hole 731 and may be located below the first hole 731. The second hole 732 may overlap with the first hole 731 in the up-down direction. A second detection pin 712 may be inserted and installed in the second hole 732.

[0123] The second substrate 73 may include a third hole 733. The third hole 733 may be formed by penetrating the second substrate 73 in the front-to-back direction. The third hole 733 may be a circular hole. The third hole 733 may be located on the left side with the connection holes 7391 and 7392 as a reference. The third hole 733 may be located between the first fastening hole 737 and the connection holes 7391 and 7392. The third hole 733 may be separated from the first hole 731 and the second hole 732. The third hole 733 may be located between the first hole 731 and the second hole 732. At least a portion of the third hole 733 may overlap with the first hole 731 and the second hole 732 in the up-down direction. The diameter of the third hole 733 may be smaller than the diameter of the first hole 731 and the second hole 732. The center of the third hole 733 may be eccentrically arranged on the left side of the imaginary straight line connecting the center of the first hole 731 and the center of the second hole 732. The third detection pin 713 may be inserted and installed in the third hole 733.

[0124] The second substrate 73 may include a fourth hole 734. The fourth hole 734 may be formed by penetrating the second substrate 73 in the front-rear direction. The fourth hole 734 may be a circular hole. The fourth hole 734 may be located on the right side with the connecting holes 7391 and 7392 as a reference. The fourth hole 734 may be located between the second fastening hole 738 and the connecting holes 7391 and 7392. The fourth hole 734 may overlap with the first hole 731 in the left-right direction. A fourth detection pin 721 may be inserted and installed in the fourth hole 734.

[0125] The second substrate 73 may include a fifth hole 735. The fifth hole 735 may be formed by penetrating the second substrate 73 in the front-rear direction. The fifth hole 735 may be a circular hole. The fifth hole 735 may be formed to be the same size and shape as the fourth hole 734. The fifth hole 735 may be located on the right side with the connection holes 7391 and 7392 as a reference. The fifth hole 735 may be located between the second fastening hole 738 and the connection holes 7391 and 7392. The fifth hole 735 may be separated from the fourth hole 734 and may be located below the fourth hole 734. The fifth hole 735 may overlap with the fourth hole 734 in the up-down direction. The fifth hole 735 may overlap with the second hole 732 in the left-right direction. A fifth detection pin 722 may be inserted and installed in the fifth hole 735.

[0126] The second substrate 73 may include a sixth hole 736. The sixth hole 736 may be formed by penetrating the second substrate 73 in the front-rear direction. The sixth hole 736 may be a circular hole. The sixth hole 736 may be located on the right side with the connection holes 7391 and 7392 as a reference. The sixth hole 736 may be located between the second fastening hole 738 and the connection holes 7391 and 7392. The sixth hole 736 may be separated from the fourth hole 734 and the fifth hole 735. The sixth hole 736 may be located between the fourth hole 734 and the fifth hole 735. At least a portion of the sixth hole 736 may overlap with the fourth hole 734 and the fourth hole 734 in the up-down direction. The sixth hole 736 may overlap with the third hole 733 in the left-right direction. The diameter of the sixth hole 736 may be smaller than the diameter of the fourth hole 734 and the fifth hole 735. The center of the sixth hole 736 may be eccentrically arranged on the right side of an imaginary straight line connecting the center of the fourth hole 734 and the center of the fifth hole 735. The sixth detection pin 723 may be inserted into the sixth hole 736 .

[0127] Reference Fig.21 and Fig. 20 , the first pin 71 may be coupled to the first terminal 61. The first pin 71 may be detachably coupled to the first terminal 61. The first pin 71 may contact and be electrically connected to the first terminal 61.

[0128] The first pin 71 may include a first probe pin 711. The first probe pin 711 may be installed on the second substrate 73 in front of the second substrate 73. The first probe pin 711 may protrude forward from the second substrate 73. The first probe pin 711 may be inserted into the first hole 731 of the second substrate 73 and electrically connected to the second substrate 73. The first probe pin 711 may be connected to the first rod 612 (see Fig.11 When the first pin 71 is combined with the first terminal 61, the first detection pin 711 may contact the first head 612H of the first rod 612 (refer to Fig.11 ).

[0129] The first detecting pin 711 may be referred to as a first spring loaded pin 711 , a first spring loaded needle 711 , a first lift pin 711 , or a first pogo pin 711 .

[0130] The first pin 71 may include a second probe pin 712. The second probe pin 712 may be installed on the second substrate 73 in front of the second substrate 73. The second probe pin 712 may protrude forward from the second substrate 73. The second probe pin 712 may be inserted into the second hole 732 of the second substrate 73 and electrically connected to the second substrate 73. The second probe pin 712 may be connected to the second rod 613 (see Fig.11 When the first pin 71 is combined with the first terminal 61, the second detection pin 712 can contact the second head 613H of the second rod 613 (refer to Fig.11 ).

[0131] The second detecting pin 712 may be referred to as a second spring loaded pin 712 , a second spring loaded needle 712 , a second lift pin 712 , or a second pogo pin 712 .

[0132] The first pin 71 may include a third probe pin 713. The third probe pin 713 may be installed on the second substrate 73 in front of the second substrate 73. The third probe pin 713 may protrude forward from the second substrate 73. The third probe pin 713 may be inserted into the third hole 733 of the second substrate 73 and electrically connected to the second substrate 73. The third probe pin 713 may be connected to the third rod 614 (see Fig.11 When the first pin 71 is combined with the first terminal 61, the third detection pin 713 can contact the third head 614H of the third rod 614 (refer to Fig.11 ).

[0133] The third detecting pin 713 may be referred to as a third spring loaded pin 713 , a third spring loaded needle 713 , a third lift pin 713 , or a third pogo pin 713 .

[0134] The second pin 72 may be coupled to the second terminal 62. The second pin 72 may be detachably coupled to the second terminal 62. The second pin 72 may contact and be electrically connected to the second terminal 62.

[0135] The second pin 72 may include a fourth probe pin 721. The fourth probe pin 721 may be installed on the second substrate 73 in front of the second substrate 73. The fourth probe pin 721 may protrude forward from the second substrate 73. The fourth probe pin 721 may be inserted into the fourth hole 734 of the second substrate 73 and electrically connected to the second substrate 73. The fourth probe pin 721 may be connected to the fourth rod 622 (see Fig.11 When the second pin 72 and the second terminal 62 are combined, the fourth detection pin 721 can contact the fourth head 622H of the fourth rod 622 (refer to Fig.11 ).

[0136] The fourth detecting pin 721 may be referred to as a fourth spring loaded pin 721 , a fourth spring loaded needle 721 , a fourth lift pin 721 , or a fourth pogo pin 721 .

[0137] The second pin 72 may include a fifth probe pin 722. The fifth probe pin 722 may be mounted on the second substrate 73 in front of the second substrate 73. The fifth probe pin 722 may protrude forward from the second substrate 73. The fifth probe pin 722 may be inserted into the fifth hole 735 of the second substrate 73 and electrically connected to the second substrate 73. The fifth probe pin 722 may be connected to the fifth rod 623 (see Fig.11 When the second pin 72 and the second terminal 62 are combined, the fifth detection pin 722 can contact the fifth head 623H of the fifth rod 623 (refer to Fig.11 ).

[0138] The fifth detecting pin 722 may be referred to as a fifth spring loaded pin 722 , a fifth spring loaded needle 722 , a fifth lift pin 722 , or a fifth pogo pin 722 .

[0139] The second pin 72 may include a sixth probe pin 723. The sixth probe pin 723 may be mounted on the second substrate 73 in front of the second substrate 73. The sixth probe pin 723 may protrude forward from the second substrate 73. The sixth probe pin 723 may be inserted into the sixth hole 736 of the second substrate 73 and electrically connected to the second substrate 73. The sixth probe pin 723 may be connected to the sixth rod 624 (see Fig.11When the second pin 72 and the second terminal 62 are combined, the sixth detection pin 723 can contact the sixth head 624H of the sixth rod 624 (refer to Fig.11 ).

[0140] The sixth detecting pin 723 may be referred to as a sixth spring loaded pin 722 , a sixth spring loaded needle 722 , a sixth lift pin 722 , or a sixth pogo pin 722 .

[0141] Reference Fig. 22 and Fig.21 The first detecting pin 711 may include a first barrel 7111 , a first plunger 7112 , a first connecting portion 7113 , and a first elastic member 7114 .

[0142] The first cylinder 7111 may be formed into a cylindrical shape with a space inside. One end of the first cylinder 7111 may be open. The other end 7111E of the first cylinder 7111 may have a larger diameter than the first cylinder 7111. The other end 7111E of the first cylinder 7111 may be larger than the diameter of the first hole 731 of the second substrate 73 (see Fig. 20 ).

[0143] The first plunger 7112 may be coupled to one end of the first cylinder 7111. The first plunger 7112 may be coupled to an opening formed at one end of the first cylinder 7111. The first plunger 7112 may include a first plunger body 7112B and a first plunger head 7112H protruding from one side of the first plunger body 7112B. The first plunger body 7112B may be accommodated inside the first cylinder 7111. The diameter of the first plunger body 7112B may be larger than the diameter of the opening of the first cylinder 7111. Thus, the first plunger 7112 may not be separated from the first cylinder 7111. The first plunger head 7112H may be smaller than the diameter of the first plunger body 7112B, and may be smaller than or equal to the diameter of the opening of the first cylinder 7111. The first plunger head 7112H may protrude forward relative to one end (opening) of the first cylinder 7111. The first plunger head 7112H may be a portion that contacts the first head 612H of the first rod 612 (see Fig.11 ).

[0144] The first connection portion 7113 may protrude rearward from the other end 7111E of the first barrel 7111. The first connection portion 7113 may have a smaller diameter than the other end 7111E of the first barrel 7111. The first connection portion 7113 may contact the second substrate 73. The first connection portion 7113 may be inserted into the first hole 731 of the second substrate 73 and contact the second substrate 73. The first connection portion 7113 may have a cylindrical shape, and a portion thereof may be cut.

[0145] The first elastic member 7114 may be accommodated inside the first cylinder 7111. One end of the first elastic member 7114 may contact the first plunger head 7112H, and the other end may contact the other end 7111E of the first cylinder 7111. The first elastic member 7114 may elastically support the first plunger 7112. Thus, the first plunger 7112 may move in the front-rear direction. For example, the first elastic member 7114 may be a coil spring.

[0146] The second detecting pin 712 may include a second cylinder 7121 , a second plunger 7122 , a second connecting portion 7123 , and a second elastic member 7124 .

[0147] The second cylinder 7121 may be formed in a cylindrical shape with a space inside. One end of the second cylinder 7121 may be open. The other end 7121E of the second cylinder 7121 may have a larger diameter than the second cylinder 7121. The other end 7121E of the second cylinder 7121 may be larger than the diameter of the second hole 732 of the second substrate 73 (see Fig. 20 ).

[0148] The second plunger 7122 may be coupled to one end of the second cylinder 7121. The second plunger 7122 may be coupled to an opening formed at one end of the second cylinder 7121. The second plunger 7122 may include a second plunger body 7122B and a second plunger head 7122H protruding from one side of the second plunger body 7122B. The second plunger body 7122B may be accommodated inside the second cylinder 7121. The diameter of the second plunger 7122 may be larger than the diameter of the opening of the second cylinder 7121. Thus, the second plunger 7122 may not be separated from the second cylinder 7121. The second plunger head 7122H may be smaller than the diameter of the second plunger body 7122B, and may be smaller than or the same as the diameter of the opening of the second cylinder 7121. The second plunger head 7122H may protrude forward relative to one end (opening) of the second cylinder 7121. The second plunger head 7122H may be a portion that contacts the second head 613H of the second rod 613 (refer to Fig.11 ).

[0149] The second connection portion 7123 may protrude rearward from the other end 7121E of the second barrel 7121. The second connection portion 7123 may have a smaller diameter than the other end 7121E of the second barrel 7121. The second connection portion 7123 may contact the second substrate 73. The second connection portion 7123 may be electrically connected to the second substrate 73. The second connection portion 7123 may be inserted into the second hole 732 of the second substrate 73 and contact the second substrate 73. The second connection portion 7123 may have a cylindrical shape, and a portion thereof may be cut.

[0150] The second elastic member 7124 can be accommodated inside the second cylinder 7121. One end of the second elastic member 7124 can contact the second plunger head 7122H, and the other end can contact the other end 7121E of the second cylinder 7121. The second elastic member 7124 can elastically support the second plunger 7122. Thus, the second plunger 7122 can move in the front-rear direction. For example, the second elastic member 7124 can be a coil spring.

[0151] The third detecting pin 713 may include a third cylinder 7131 , a third plunger 7132 , a third connecting portion 7133 , and a third elastic member 7134 .

[0152] The third barrel 7131 may be formed in a cylindrical shape with a space inside. One end of the third barrel 7131 may be open. The other end 7131E of the third barrel 7131 may have a larger diameter than the third barrel 7131. The other end 7131E of the third barrel 7131 may be larger than the diameter of the third hole 733 of the second substrate 73 (see Fig. 20 The third barrel 7131 may be formed in a cylindrical shape having a smaller diameter than the first barrel 7111 and the second barrel 7121.

[0153] The third plunger 7132 may be coupled to one end of the third cylinder 7131. The third plunger 7132 may be coupled to an opening formed at one end of the third cylinder 7131. The third plunger 7132 may include a second plunger body 7132B and a third plunger head 7132H protruding from one side of the third plunger body 7132B. The third plunger body 7132B may be accommodated inside the third cylinder 7131. The diameter of the third plunger 7132 may be larger than the diameter of the opening of the third cylinder 7131. Thus, the third plunger 7132 may not be separated from the third cylinder 7131. The third plunger head 7132H may be smaller than the diameter of the third plunger body 7132B, and may be smaller than or equal to the diameter of the opening of the third cylinder 7131. The third plunger head 7132H may protrude forward relative to one end (opening) of the third cylinder 7131. The third plunger head 7132H may be a portion that contacts the third head 614H of the third rod 614 (see Fig.11 ).

[0154] The third connection portion 7133 may protrude rearward from the other end 7131E of the third barrel 7131. The third connection portion 7133 may have a smaller diameter than the other end 7131E of the third barrel 7131. The third connection portion 7133 may contact the second substrate 73. The third connection portion 7133 may be electrically connected to the second substrate 73. The third connection portion 7133 may be inserted into the third hole 733 of the second substrate 73 and contact the second substrate 73. The third connection portion 7133 may be formed in a cylindrical shape.

[0155] The third elastic member 7134 may be accommodated inside the third cylinder 7131. One end of the third elastic member 7134 may contact the second plunger head 7132H, and the other end may contact the other end 7131E of the third cylinder 7131. The third elastic member 7134 may elastically support the third plunger 7132. Thus, the third plunger 7132 may move in the front-rear direction. For example, the third elastic member 7134 may be a coil spring.

[0156] The fourth detecting pin 721 may include a fourth cylinder 7211, a fourth plunger 7212, a fourth connection portion 7213, and a fourth elastic member 7214. The fourth detecting pin 721 may have the same shape and structure as the first detecting pin 711.

[0157] The fourth barrel 7211 may be formed in a cylindrical shape with a space inside. One end of the fourth barrel 7211 may be open. The other end 7211E of the fourth barrel 7211 may have a larger diameter than the fourth barrel 7211. The other end 7211E of the fourth barrel 7211 may be larger than the diameter of the fourth hole 734 of the second substrate 73 (refer to Fig. 20 ).

[0158] The fourth plunger 7212 may be coupled to one end of the fourth barrel 7211. The fourth plunger 7212 may be coupled to an opening formed at one end of the fourth barrel 7211. The fourth plunger 7212 may include a fourth plunger body 7212B and a fourth plunger head 7212H protruding from one side of the fourth plunger body 7212B. The fourth plunger body 7212B may be accommodated inside the fourth barrel 7211. The diameter of the fourth plunger body 7212B may be larger than the diameter of the opening of the fourth barrel 7211. Thus, the fourth plunger 7212 may not be separated from the fourth barrel 7211. The fourth plunger head 7212H may be smaller than the diameter of the fourth plunger body 7212B, and smaller than or equal to the diameter of the opening of the fourth barrel 7211. The fourth plunger head 7212H may protrude forward relative to one end (opening) of the fourth barrel 7211. The fourth plunger head 7412H may be a portion that contacts the fourth head 622H of the fourth rod 622 (see Fig.11).

[0159] The fourth connection portion 7213 may protrude rearward from the other end 7211E of the fourth barrel 7211. The fourth connection portion 7213 may have a smaller diameter than the other end 7211E of the fourth barrel 7211. The fourth connection portion 7213 may contact the second substrate 73. The fourth connection portion 7213 may be inserted into the fourth hole 734 of the second substrate 73 and contact the second substrate 73. The fourth connection portion 7213 may have a cylindrical shape, and a portion thereof may be cut.

[0160] The fourth elastic member 7214 may be accommodated inside the fourth cylinder 7211. One end of the fourth elastic member 7214 may contact the fourth plunger head 7212H, and the other end may contact the other end 7211E of the fourth cylinder 7211. The fourth elastic member 7214 may elastically support the fourth plunger 7212. Thus, the fourth plunger 7212 may move in the front-rear direction. For example, the fourth elastic member 7214 may be a coil spring.

[0161] The fifth detecting pin 722 may include a fifth cylinder 7221 , a fifth plunger 7222 , a fifth connection portion 7223 , and a fifth elastic member 7224 . The fifth detecting pin 722 may have the same shape and structure as the second detecting pin 712 .

[0162] The fifth cylinder 7221 may be formed in a cylindrical shape with a space inside. One end of the fifth cylinder 7221 may be open. The other end 7221E of the fifth cylinder 7221 may have a larger diameter than the fifth cylinder 7221. The other end 7221E of the fifth cylinder 7221 may be larger than the diameter of the fifth hole 735 of the second substrate 73 (refer to Fig. 20 ).

[0163] The fifth plunger 7222 may be coupled to one end of the fifth cylinder 7221. The fifth plunger 7222 may be coupled to an opening formed at one end of the fifth cylinder 7221. The fifth plunger 7222 may include a fifth plunger body 7222B and a fifth plunger head 7222H protruding from one side of the fifth plunger body 7222B. The fifth plunger body 7222B may be accommodated inside the fifth cylinder 7221. The diameter of the fifth plunger 7222 may be larger than the diameter of the opening of the fifth cylinder 7221. Thus, the fifth plunger 7222 may not be separated from the fifth cylinder 7221. The fifth plunger head 7222H may be smaller than the diameter of the fifth plunger body 7222B, and smaller than or equal to the diameter of the opening of the fifth cylinder 7221. The fifth plunger head 7222H may protrude forward relative to one end (opening) of the fifth cylinder 7221. The fifth plunger head 7222H may be a portion that contacts the fifth head 623H of the fifth rod 623 (see Fig.11 ).

[0164] The fifth connection portion 7223 may protrude rearward from the other end 7221E of the fifth barrel 7221. The fifth connection portion 7223 may have a smaller diameter than the other end 7221E of the fifth barrel 7221. The fifth connection portion 7223 may contact the second substrate 73. The fifth connection portion 7223 may be electrically connected to the second substrate 73. The fifth connection portion 7223 may be inserted into the fifth hole 735 of the second substrate 73 and contact the second substrate 73. The fifth connection portion 7223 may have a cylindrical shape, and a portion thereof may be cut.

[0165] The fifth elastic member 7224 may be accommodated inside the fifth cylinder 7221. One end of the fifth elastic member 7224 may contact the fifth plunger head 7222H, and the other end may contact the other end 7221E of the fifth cylinder 7221. The fifth elastic member 7224 may elastically support the fifth plunger 7222. Thus, the fifth plunger 7222 may move in the front-rear direction. For example, the fifth elastic member 7224 may be a coil spring.

[0166] The sixth detecting pin 723 may include a sixth cylinder 7231 , a sixth plunger 7232 , a sixth connection portion 7233 , and a sixth elastic member 7234 . The sixth detecting pin 723 may have the same shape and structure as the third detecting pin 713 .

[0167] The sixth cylinder 7231 may be formed in a cylindrical shape with a space inside. One end of the sixth cylinder 7231 may be open. The other end 7231E of the sixth cylinder 7231 may have a larger diameter than the sixth cylinder 7231. The other end 7231E of the sixth cylinder 7231 may be larger than the diameter of the sixth hole 736 of the second substrate 73 (refer to Fig. 20 ). The sixth barrel 7231 may be formed in a cylindrical shape having a smaller diameter than the fourth barrel 7211 and the fifth barrel 7221 .

[0168] The sixth plunger 7232 may be coupled to one end of the sixth cylinder 7231. The sixth plunger 7232 may be coupled to an opening formed at one end of the sixth cylinder 7231. The sixth plunger 7232 may include a sixth plunger body 7232B and a sixth plunger head 7232H protruding from one side of the sixth plunger body 7232B. The sixth plunger body 7232B may be accommodated inside the sixth cylinder 7231. The diameter of the sixth plunger 7232 may be larger than the diameter of the opening of the sixth cylinder 7231. Thus, the sixth plunger 7232 may not be separated from the sixth cylinder 7231. The sixth plunger head 7232H may be smaller than the diameter of the sixth plunger body 7232B, and may be smaller than or equal to the diameter of the opening of the sixth cylinder 7231. The sixth plunger head 7232H may protrude forward relative to one end (opening) of the sixth cylinder 7231. The sixth plunger head 7232H may be a portion that contacts the sixth head 624H of the sixth rod 624 (see Fig.11 ).

[0169] The sixth connection portion 7233 may protrude rearward from the other end 7231E of the sixth barrel 7231. The sixth connection portion 7233 may have a smaller diameter than the other end 7231E of the sixth barrel 7231. The sixth connection portion 7233 may contact the second substrate 73. The sixth connection portion 7233 may be electrically connected to the second substrate 73. The sixth connection portion 7233 may be inserted into the sixth hole 736 of the second substrate 73 and contact the second substrate 73. The sixth connection portion 7233 may be formed in a cylindrical shape.

[0170] The sixth elastic member 7234 may be accommodated inside the sixth cylinder 7231. One end of the sixth elastic member 7234 may contact the sixth plunger head 7232H, and the other end may contact the other end 7231E of the sixth cylinder 7231. The sixth elastic member 7234 may elastically support the sixth plunger 7232. Thus, the sixth plunger 7232 may move in the front-rear direction. For example, the sixth elastic member 7234 may be a coil spring.

[0171] Reference Fig.23 and Fig. 20 , the first pin 71 may include a first pin cover 714. The first pin cover 714 may be formed of an insulating material.

[0172] The first pin cover body 714 may include a first groove 7141. The first groove 7141 may be formed by being recessed backward from the front face 714S1 of the first pin cover body 714. The first groove 7141 may be formed to a first depth (Depth 1) Dp1. The first depth Dp1 may be a vertical distance between the front face 714S1 of the first pin cover body 714 and the front face 7141S of the first groove 714.

[0173] The first pin cover body 714 may include a first pin hole 7142. The first pin hole 7142 may be formed by penetrating the front side 7141S of the first slot 7141 and the back side 714S2 of the first pin cover body 714. The first pin hole 7142 may include a first region 7142H1, a second region 7142H2, and a third region 7142H3. The first to third regions 7142H1, 7142H2, 7142H3 may communicate with each other. The first region 7142H1 may be connected to the front side 7141S of the first slot 7141. The first region 7142H1 may have a first diameter D1. The third region 7142H3 may be connected to the back side 714S2 of the first pin cover body 714. The third region 7142H3 may be a groove formed by being recessed from the back side 714S2 of the first pin cover body 714. The third region 7142H3 may have a third diameter D3. The third diameter D3 may be larger than the first diameter D1. The second region 7142H2 may be located between the first region 714H1 and the third region 7142H3. The second region 7142H2 may have a second diameter D2. The second diameter D2 may be larger than the first diameter D1 and smaller than the third diameter D3.

[0174] The first pin cover body 714 may include a second pin hole 7143. The second pin hole 7143 may be formed by penetrating the front face 7141S of the first slot 7141 and the back face 714S2 of the first pin cover body 714. The second pin hole 7143 may be separated from the first pin hole 7142 and may be located below the first pin hole 7142. The second pin hole 7143 may include a fourth region 7143H1, a fifth region 7143H2, and a sixth region 7143H3. The fourth to sixth regions 7143H1, 7143H2, 7143H3 may communicate with each other. The fourth region 7143H1 may be connected to the front face 7141S of the first slot 7141. The fourth region 7143H1 may have a fourth diameter D4. The fourth diameter D4 may be the same as the first diameter D1. The sixth region 7143H3 may be connected to the back face 714S2 of the first pin cover body 714. The sixth region 7143H3 may be a groove formed by being recessed from the back surface 714S2 of the first pin cover body 714. The sixth region 7143H3 may have a sixth diameter D6. The sixth diameter D6 may be the same as the third diameter D3. The sixth diameter D6 may be larger than the fourth diameter D4. The fifth region 7143H2 may be located between the first region 7142H1 and the third region 7142H3. The second region 7142H2 may have a fifth diameter D5. The fifth diameter D5 may be the same as the second diameter D2. The fifth diameter D5 may be larger than the fourth diameter D4 and smaller than the sixth diameter D6.

[0175] The first pin cover body 714 may include a third pin hole 7144. The third pin hole 7144 may be formed through the front face 7141S of the first slot 7141 and the back face 714S2 of the first pin cover body 714. The third pin hole 7144 may be located between the first pin hole 7142 and the second pin hole 7143. The third pin hole 7144 may include a seventh region 7144H1, an eighth region 7144H2, and a ninth region 7144H3. The seventh to ninth regions 7144H1, 7144H2, 7144H3 may communicate with each other. The seventh region 7144H1 may be connected to the front face 7141S of the first slot 7141. The seventh region 7144H1 may have a seventh diameter D7. The seventh diameter D4 may be smaller than the first diameter D1 and the fourth diameter D4. The ninth region 7144H3 may be connected to the back face 714S2 of the first pin cover body 714. The ninth region 7144H3 may be a groove formed by being recessed from the back surface 714S2 of the first pin cover body 714. The ninth region 7144H3 may have a ninth diameter D9. The ninth diameter D9 may be smaller than the third diameter D3 and the sixth diameter D6. The ninth diameter D9 may be larger than the seventh diameter D7. The eighth region 7144H2 may be located between the seventh region 7144H1 and the ninth region 7144H3. The eighth region 7144H2 may have an eighth diameter D8. The eighth diameter D8 may be smaller than the second diameter D2 and the fifth diameter D5. The eighth diameter D8 may be larger than the seventh diameter D7 and smaller than the ninth diameter D9.

[0176] The second pin 72 may include a second pin cover 724. The second pin cover 724 may have the same structure and shape as the first pin cover 714.

[0177] The second pin cover body 724 may include a second groove 7241. The second groove 7241 may be formed by being recessed backward from the front face 724S1 of the second pin cover body 724. The second groove 7241 may be formed to a first depth (Depth 1) Dp1. The first depth Dp1 may be a distance between the front face 724S1 of the second pin cover body 724 and the front face 7241S of the second groove 724.

[0178] The second pin cover body 724 may include a fourth pin hole 7242. The fourth pin hole 7242 may be formed by penetrating the front side 7241S of the second slot 7241 and the back side 724S2 of the second pin cover body 724. The fourth pin hole 7242 may include a first region 7242H1, a second region 7242H2, and a third region 7242H3. The first to third regions 7242H1, 7242H2, 7242H3 may communicate with each other. The first region 7242H1 may be connected to the front side 7241S of the second slot 7241. The first region 7242H1 may have a first diameter D1. The third region 7242H3 may be connected to the back side 724S2 of the second pin cover body 724. The third region 7242H3 may be a groove formed by being recessed from the back side 724S2 of the second pin cover body 724. The third region 7242H3 may have a third diameter D3. The third diameter D3 may be larger than the first diameter D1. The second region 7242H2 may be located between the first region 724H1 and the third region 7242H3. The second region 7242H2 may have a second diameter D2. The second diameter D2 may be larger than the first diameter D1 and smaller than the third diameter D3.

[0179] The second pin cover body 724 may include a fifth pin hole 7243. The fifth pin hole 7243 may be formed by penetrating the front face 7241S of the second slot 7241 and the back face 724S2 of the second pin cover body 724. The fifth pin hole 7243 may be separated from the fourth pin hole 7242 and may be located below the fourth pin hole 7242. The fifth pin hole 7243 may include a fourth region 7243H1, a fifth region 7243H2, and a sixth region 7243H3. The fourth to sixth regions 7243H1, 7243H2, 7243H3 may communicate with each other. The fourth region 7243H1 may be connected to the front face 7241S of the second slot 7241. The fourth region 7243H1 may have a fourth diameter D4. The fourth diameter D4 may be the same as the first diameter D1. The sixth region 7243H3 may be connected to the back face 724S2 of the second pin cover body 724. The sixth region 7243H3 may be a groove formed by being recessed from the back surface 724S2 of the second pin cover body 724. The sixth region 7243H3 may have a sixth diameter D6. The sixth diameter D6 may be the same as the third diameter D3. The sixth diameter D6 may be larger than the fourth diameter D4. The fifth region 7243H2 may be located between the first region 7242H1 and the third region 7242H3. The second region 7242H2 may have a fifth diameter D5. The fifth diameter D5 may be the same as the second diameter D2. The fifth diameter D5 may be larger than the fourth diameter D4 and smaller than the sixth diameter D6.

[0180] The second pin cover body 724 may include a sixth pin hole 7244. The sixth pin hole 7244 may be formed by penetrating the front face 7241S of the second slot 7241 and the back face 724S2 of the second pin cover body 724. The sixth pin hole 7244 may be located between the fourth pin hole 7242 and the fifth pin hole 7243. The sixth pin hole 7244 may include a seventh region 7244H1, an eighth region 7244H2, and a ninth region 7244H3. The seventh to ninth regions 7244H1, 7244H2, 7244H3 may communicate with each other. The seventh region 7244H1 may be connected to the front face 7241S of the second slot 7241. The seventh region 7244H1 may have a seventh diameter D7. The seventh diameter D4 may be smaller than the first diameter D1 and the fourth diameter D4. The ninth region 7244H3 may be connected to the back face 724S2 of the second pin cover body 724. The ninth region 7244H3 may be a groove formed by being recessed from the back surface 724S2 of the second pin cover body 724. The ninth region 7244H3 may have a ninth diameter D9. The ninth diameter D9 may be smaller than the third diameter D3 and the sixth diameter D6. The ninth diameter D9 may be larger than the seventh diameter D7. The eighth region 7244H2 may be located between the seventh region 7244H1 and the ninth region 7244H3. The eighth region 7244H2 may have an eighth diameter D8. The eighth diameter D8 may be smaller than the second diameter D2 and the fifth diameter D5. The eighth diameter D8 may be larger than the seventh diameter D7 and smaller than the ninth diameter D9.

[0181] Reference Fig.24 and Fig.23 , the first detection pin 711 may be coupled to the first pin cover 714. The first plunger head 7112H of the first detection pin 711 may be located in the first region 7142H1 of the first pin hole 7142. The first plunger head 7112H of the first detection pin 711 may be located in the first groove 7141 of the first pin cover 714. The first cylinder 7111 of the first detection pin 711 may be located in the second region 7142H2 of the first pin hole 7142. The first connection portion 7113 of the first detection pin 711 may be located in the third region 7142H3 of the first pin hole 7142, and may protrude rearward from the back side 714S2 of the first pin cover 714.

[0182] The second detection pin 712 may be coupled to the first pin cover 714. The second plunger head 7122H of the second detection pin 712 may be located in the first region 7143H1 of the second pin hole 7143. The second plunger head 7122H of the second detection pin 712 may be located in the first groove 7141 of the first pin cover 714. The second cylinder 7121 of the second detection pin 712 may be located in the second region 7143H2 of the second pin hole 7143. The second connection portion 7123 of the second detection pin 712 may be located in the third region 7143H3 of the second pin hole 7143 and may protrude rearward from the back side 714S2 of the first pin cover 714.

[0183] The third detection pin 713 may be coupled to the first pin cover 714. The third plunger head 7132H of the third detection pin 713 may be located in the first region 7144H1 of the third pin hole 7144. The third plunger head 7132H of the third detection pin 713 may be located in the first groove 7141 of the first pin cover 714. The third cylinder 7131 of the third detection pin 713 may be located in the second region 7144H2 of the third pin hole 7144. The third connection portion 7133 of the third detection pin 713 may be located in the third region 7144H3 of the third pin hole 7144, and may protrude rearward from the back side 714S2 of the first pin cover 714.

[0184] The fourth detection pin 721 may be coupled to the second pin cover 724. The fourth plunger head 7212H of the fourth detection pin 721 may be located in the first region 7242H1 of the fourth pin hole 7242. The fourth plunger head 7222H of the fourth detection pin 721 may be located in the second groove 7241 of the second pin cover 724. The fourth cylinder 7211 of the fourth detection pin 721 may be located in the second region 7242H2 of the fourth pin hole 7242. The fourth connection portion 7213 of the fourth detection pin 721 may be located in the third region 7242H3 of the fourth pin hole 7242 and may protrude rearward from the back side 724S2 of the second pin cover 724.

[0185] The fifth detection pin 722 may be coupled to the second pin cover 724. The fifth plunger head 7222H of the fifth detection pin 722 may be located in the first region 7243H1 of the fifth pin hole 7243. The fifth plunger head 7222H of the fifth detection pin 722 may be located in the second groove 7241 of the second pin cover 724. The fifth cylinder 7221 of the fifth detection pin 722 may be located in the second region 7243H2 of the fifth pin hole 7243. The fifth connection portion 7223 of the fifth detection pin 722 may be located in the third region 7243H3 of the fifth pin hole 7243 and may protrude rearward from the back side 724S2 of the second pin cover 724.

[0186] The sixth detection pin 723 may be coupled to the second pin cover 724. The sixth plunger head 7232H of the sixth detection pin 723 may be located in the first region 7244H1 of the sixth pin hole 7244. The sixth plunger head 7232H of the sixth detection pin 723 may be located in the second groove 7241 of the second pin cover 724. The sixth cylinder 7231 of the sixth detection pin 723 may be located in the second region 7244H2 of the sixth pin hole 7244. The sixth connection portion 7233 of the sixth detection pin 723 may be located in the third region 7244H3 of the sixth pin hole 7244 and may protrude rearward from the back side 724S2 of the second pin cover 724.

[0187] Reference Fig.25 and Fig. 20 , the first pin 71 may be mounted on the second substrate 73, and the second pin 72 may be mounted on the second substrate 73. The first to third connection portions 7113, 7123, 7133 of the first pin 71 may be inserted into the first to third holes 731, 732, 733 of the second substrate 73, and may protrude rearward from the back surface of the second substrate 73. The fourth to sixth connection portions 7213, 7223, 7233 of the second pin 72 may be inserted into the fourth to sixth holes 734, 735, 736 of the second substrate 73, and may protrude rearward from the back surface of the second substrate 73.

[0188] Thus, the first pin 71 and the second pin 72 can be electrically connected to the second substrate 73, and the power transmission unit 81 (see Fig.19 ) can be transmitted to the first pin 71 and the second pin 72 through the second substrate 73.

[0189] Reference Figure 26 to Figure 28 , the pin assembly 70 may be combined with the terminal assembly 60. The pin assembly 70 may contact and be electrically connected to the terminal assembly 60. At this time, when the detection pins 711, 712, 713, 721, 722, 723 and the rods 612, 613, 614, 622, 623, 624 are all in contact, current may flow to the terminal assembly 60 through the pin assembly 70. When the first to sixth detection pins 711, 712, 713, 721, 722, 723 are all in contact with the first to sixth rods 612, 613, 614, 622, 623, 624, current may flow.

[0190] The first detection pin 711 may contact the first rod 612, the second detection pin 712 may contact the second rod 613, and the third detection pin 713 may contact the third rod 614. The first detection pin 711 and the second detection pin 712 may contact the first rod 612 and the second rod 613 at substantially the same time. Due to the stepped structure of the first terminal 61, the third detection pin 713 may contact the third rod 614 later than the first detection pin 711 and the second detection pin 712.

[0191] The fourth detecting pin 721 may contact the fourth rod 622, the fifth detecting pin 722 may contact the fifth rod 623, and the sixth detecting pin 723 may contact the sixth rod 624. The fourth detecting pin 721 and the fifth detecting pin 722 may contact the fourth rod 622 and the fifth rod 623 at substantially the same time. Due to the stepped structure of the second terminal 62, the sixth detecting pin 723 may contact the sixth rod 624 later than the fourth detecting pin 721 and the fifth detecting pin 722.

[0192] That is, even if the first detection pin 711, the second detection pin 712, the third detection pin 721, and the fourth detection pin 722 are in contact with the first rod 612, the second rod 613, the fourth rod 622, and the fifth rod 623, respectively, the current will not flow, and the current can flow only when the third detection pin 713 and the sixth detection pin 723 are fastened to the third rod 614 and the sixth rod 624 (refer to Fig.29 ).

[0193] Reference Fig.30 (A), usually, when the probe pin and the terminal are in contact (refer to Fig.29 (A) 'b'), high contact resistance is generated at the probe pin, and then the contact resistance gradually stabilizes (refer to Fig.29 (A) 'c'). At this time, when the current is applied while the probe pin and the terminal are in contact (refer to Fig.29 In 'a' of (A), a large loss occurs at the contact portion between the detection pin and the terminal, and sparks are generated.

[0194] Reference Fig.30 (B), the first detection pin 711, the second detection pin 712, the fourth detection pin 721 and the fifth detection pin 722 are in contact with the first rod 612, the second rod 613, the third rod 622 and the fourth rod 623 respectively (refer to Fig.29 In the case of 'b' of (B), high contact resistance may be generated in the detection pins 711, 712, 721, 722. Then, when the pin assembly 70 moves toward the terminal assembly 60 and the plunger heads of the detection pins 711, 712, 721, 722 reach the working height WH (refer to Fig.29 (B)'c' and Fig. 27 ), the contact resistance can be stabilized. When the plunger heads of the detection pins 711, 712, 721, 722 reach the working height WH (refer to Fig.29 (B) 'c'), the third detection pin 713 and the sixth detection pin 723 are in contact with the third rod 614 and the sixth rod 624 respectively, and current can flow (refer to Fig.29 (B) a' and Fig.28 ).

[0195] The stepped structure of the terminal assembly 60 stabilizes the contact resistance and then conducts the current, thereby preventing the generation of sparks at the contact portion between the pin assembly 70 and the terminal assembly 60 .

[0196] Reference Fig.31 and Fig.32 The terminal assembly 60 may include a first substrate 63, a first terminal 61, a second terminal 62, a first button 641, and a second button 642. The first terminal 61 and the second terminal 62 may be mounted on the first substrate 63. The first terminal 61 and the second terminal 62 may protrude backward from the back of the first substrate 63. The first button 641 and the second button 642 may be mounted on the first substrate 63.

[0197] The first button 641 may be disposed adjacent to the first terminal 61, and the second button 642 may be disposed adjacent to the second terminal 62. For example, the first button 641 may be located above the first terminal 61, and the second button 642 may be located above the second terminal 62. The first button 641 may protrude rearward from the back side of the first substrate 63. The second button 642 may protrude rearward from the back side of the first substrate 63. At this time, the protruding height of the first button 641 may be lower than the protruding height of the first terminal 61, and the protruding height of the second button 642 may be lower than the protruding height of the second terminal 62. That is, a step may be formed between the first button 641 and the first terminal 61, and a step may be formed between the first button 642 and the second terminal 62.

[0198] The pin assembly 70 may include a first pin 71, a second pin 72, and a second substrate 73. The first pin 71 may be mounted on the second substrate 73. The second pin 72 may be mounted on the second substrate 73. The second substrate 73 may receive external power from the power transfer portion 81.

[0199] The first terminal 61 may be aligned with the first pin 71 of the pin assembly 70. The first button 641 may be aligned with the first pin 71 of the pin assembly 70. The first pin 71 may be combined with and contact the first terminal 61. When the first pin 71 contacts the first terminal 61, Fig.32 The first switch SW1 on the circuit diagram can be switched on. When the first pin 71 is combined with the first terminal 61, the first button 641 can be pressed. At this time, the first pin 71 can first contact and combine with the first terminal 61, and then contact and press the first button 641. When the first pin 71 presses the first button 641, the first button 641 can be switched on (refer to Fig.32 SW 2).

[0200] The second terminal 62 may be aligned with the second pin 72 of the pin assembly 70. The second button 642 may be aligned with the second pin 72 of the pin assembly 70. The second pin 72 may be coupled to the second terminal 62. When the second pin 72 contacts the second terminal 62, Fig.32 The first switch SW1 on the circuit diagram is turned on. When the second pin 72 is combined with the second terminal 62, the second button 642 may be pressed. At this time, the second pin 72 may first contact and combine with the second terminal 62, and then contact and press the second button 642. When the second pin 72 presses the second button 642, the second button 642 may be turned on (refer to Fig.32 SW 2).

[0201] When the first button 641 and the second button 642 are turned on, current may flow. When the pin assembly 70 and the terminal assembly 60 are combined, current may flow to the power transmission part 81, the pin assembly 70, the terminal assembly 60, and the head 10 in sequence.

[0202] Reference Figures 1 to 32 The display device of one aspect of the present invention may include: a head 10 having a display panel 11; brackets 20, 30, 40, 50 supporting the head 10 and detachably coupled to the head 10; and connectors 60, 70 located between the head 10 and the brackets 20, 30, 40, 50 and electrically connecting the head 10 and the brackets 20, 30, 40, 50; the connectors 60, 70 may include: a terminal assembly 60 coupled to the head 10 and including a terminal 61; and a pin assembly coupled to the bracket 2 0, 30, 40, 50, and includes a pin 71 aligned with the terminal 61; the terminal 61 may include: a first rod 612, formed to a first length; and a second rod 614, formed to a second length smaller than the first length, and having a diameter smaller than the diameter of the first rod 612; the pin 71 may include: a first detection pin 711, in contact with the first rod 612; and a second detection pin 713, in contact with the second rod 614, and one end of the second detection pin 713 is located on the same plane as one end of the first detection pin 711.

[0203] The second rod 614 may be located further forward than the first rod 612 .

[0204] The terminal assembly 60 may further include a cover body 611 for accommodating the first rod 612 and the second rod 614. The cover body 611 may include: a first rod hole 6111 formed through a first surface 611S1 and a second surface 611S2 of the cover body 611, and the first rod 612 is inserted into the first rod hole 6111; a first groove 611G formed by being recessed from the first surface 611S1 of the cover body 611, and including a third surface 611S3, and the third surface 611S3 is connected to the cover body 611; 1 is configured in a stepped manner; and a second rod hole 6112 is formed by penetrating the third surface 611S3 of the first groove 611G and the second surface 611S2 of the cover body 611, and the second rod 614 is inserted into the second rod hole 6112; one side of the first rod 612 can be located on the same plane as the first surface 611S1 of the cover body 611, and one side of the second rod 614 can be located on the same plane as the third surface 611S3 of the cover body 611.

[0205] The first detection pin 711 may include: a cylinder 7111, an opening is provided at one end of the cylinder 7111, and a space is formed inside the cylinder 7111; a plunger 7112, which is combined with the opening of the cylinder 7111, and the plunger 7112 includes a plunger body 7112B and a plunger head 7112H, the plunger body 7112B is located inside the cylinder 7111, the plunger head 7112H extends from the plunger body 7112B and is located outside the cylinder 7111, and has a smaller diameter than the plunger body 7112B; and an elastic member 7114, which is located inside the cylinder 7111 and elastically supports the plunger 7112, one end of the elastic member 7114 is combined with the other end 7111E of the cylinder 7111, and the other end of the elastic member 7114 is combined with the plunger body 7112B.

[0206] The pin assembly 70 may further include a pin cover 714 for accommodating the first detection pin 711 and the second detection pin 713, and the pin cover 714 may include: a groove 7141, which is formed by being recessed from a first surface 714S1 of the pin cover 714, the terminal assembly 60 is inserted into the groove 7141, and the groove 7141 includes a second surface 7141S located further back than the first surface 714S1 of the pin cover 714; a first pin hole 7142, which passes through the second surface 7141S of the groove 7141 and the pin cover 714 located at the second surface 7141S; The third surface 714S2 is formed on the opposite side of the first surface 714S1, and the first detection pin 711 is inserted into the first pin hole 7142; and the second pin hole 7144 is formed by passing through the second surface 7141S of the groove 7141 and the third surface 714S2 of the pin cover body 714, and the second detection pin 713 is inserted into the second pin hole 7144; the plunger head 7112H can protrude more than the second surface 7141S of the groove 7141 of the pin cover body 714 and be located in the groove 7141 of the pin cover body 714.

[0207] The other end 7111E of the cylinder 7111 may have a diameter larger than the diameter of the cylinder 7111, and the first pin hole 7142 may include: a first region 7142H1 having a first diameter D1, and the plunger head 7112H is located in the first region 7142H1; a second region 7142H2 extending from the first region 7142H1 and having a second diameter D2 larger than the first diameter D1, and the cylinder 7111 is located in the second region 7142H2; and a third region 7142H3 extending from the first region 7142H1 and having a second diameter D2 larger than the first diameter D1, and the cylinder 7111 is located in the second region 7142H2; The second area 7142H2 extends and has a third diameter D3 larger than the second diameter D2. The third area 7142H3 includes a fourth surface located further forward than the third surface 714S2 of the pin cover body 714. The other end 7111E of the cylinder 7111 is located in the third area 7142H3. The other end 7111E of the cylinder 7111 can contact the fourth surface of the pin cover body 714, and the other end 7111E of the cylinder 7111 can protrude further rearward than the third surface 714S2.

[0208] The head 10 includes a back cover 15: the back cover 15 forms the back side of the head 10, and the back cover 15 includes a mounting groove 15G for configuring the terminal assembly 60, and the mounting groove 15G may include: a first mounting portion 151; a second mounting portion 152, formed by stamping forward from the first mounting portion 151; and a third mounting portion 153, protruding backward from the back cover 15 and extending along the periphery of the first mounting portion 151; the second mounting portion 152 may include a terminal hole 155a, the terminal hole 155a is formed by passing through the second mounting portion 152 and is aligned with the terminal 61, and the terminal 61 is exposed to the rear of the back cover 15.

[0209] The bracket 20, 30, 40, 50 may include a mounting member 54, which is combined with the mounting groove 15G. The pin assembly 70 is located on the mounting member 54, and the mounting member 54 may include: a front mounting member 542, facing the mounting groove 15G; a rear mounting member 541, located behind the front mounting member 542 and combined with the bracket 20, 30, 40, 50; the front mounting member 542 may include: a first part 5421, facing the first mounting part 151; a second part 5422, protruding forward from the first part 5421, facing the second mounting part 152; and a pin hole 7142, formed in the first part 5421, aligned with the terminal hole 155a.

[0210] The connecting members 60, 70 may include: a first substrate 63, located between the display panel 11 and the back cover 15, and the terminal 61 is installed on the first substrate 63; and a second substrate 73, located between the front mounting member 542 and the rear mounting member 541, and the pin 71 is installed on the second substrate 73; the pin 71 may pass through the pin hole 7142 and protrude forward of the front mounting member 542.

[0211] The mounting groove 15G may include a coupling groove 154a, which is formed by being recessed forward from the second mounting portion 152 and forming the periphery of the terminal hole 155a. The terminal 61 may pass through the terminal hole 155a and be located in the coupling groove 154a, and the pin 71 may be inserted into the coupling groove 154a.

[0212] The pin assembly 70 may include a connecting portion 7113 protruding from the other end 7111E of the cylinder 7111 and connected to the second substrate 73 , and the power transmission portions 81 , 82 transmitting the external power may be electrically connected to the second substrate 73 at the rear of the second substrate 73 .

[0213] The mounting groove 15G may include a first magnet groove, which is formed by being recessed from the front side of the second mounting portion 152 toward the rear, and the first magnet M1 is inserted into the first magnet groove. The mounting member 54 may include a second magnet groove, which is formed by being recessed from the back side of the front mounting member 542 toward the front, and the second magnet M2 facing the first magnet M1 is inserted into the second magnet groove.

[0214] The terminal 61 may further include a third rod 613, the third rod 613 being formed to the first length, one side of the third rod 613 being located on the same plane as one side of the first rod 612, the first rod 612, the second rod 614 and the third rod 613 being sequentially arranged up and down, and the second rod 614 may be eccentrically arranged to one side relative to the first rod 612 and the third rod 613.

[0215] After the first detecting pin 711 contacts the first rod 612 , the second detecting pin 713 may contact the second rod 614 , and if the second detecting pin 713 contacts the second rod 614 , current may be applied.

[0216] After the contact resistance generated by the first detecting pin 711 contacting the first rod 612 is stabilized, the second detecting pin 713 may contact the second rod 614 , and if the second detecting pin 713 contacts the second rod 614 , current may be applied.

[0217] Any of the aforementioned embodiments of the present invention or other embodiments are not exclusive or distinguishable from each other. The various components or functions of any of the aforementioned embodiments of the present invention or other embodiments may be mixed or combined.

[0218] For example, it means that the A structure described in a specific embodiment and / or drawings can be combined with the B structure described in other embodiments and / or drawings. That is, even if the combination between the structures is not directly described, it means that they can be combined unless it is clearly stated that they cannot be combined.

[0219] The detailed descriptions described above should not be interpreted as limiting in all aspects, but should be understood as exemplary. The scope of the present invention should be determined by the reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention fall within the scope of the present invention.

Claims

1. A display device, wherein: include: A head having a display panel; A bracket, supporting the head and detachably coupled to the head; as well as A connecting member, located between the head and the bracket, and electrically connecting the head and the bracket; The connecting piece comprises: a terminal assembly coupled to the head and comprising a terminal; and a pin assembly coupled to the bracket and including a pin aligned with the terminal; The terminal comprises: a first rod formed to a first length; and a second rod formed to a second length less than the first length and having a diameter less than the diameter of the first rod; The pin comprises: a first detection pin in contact with the first rod; and The second detecting pin contacts the second rod, and one end of the second detecting pin is located on the same plane as one end of the first detecting pin.

2. The display device according to claim 1, wherein: The second rod is located further forward than the first rod.

3. The display device according to claim 1, wherein: The terminal assembly further includes a cover body accommodating the first rod and the second rod; The cover body comprises: A first rod hole is formed through the first surface and the second surface of the cover body, and the first rod is inserted into the first rod hole; a first groove formed by being recessed from the first surface of the cover body and including a third surface, the third surface being arranged in a step-like manner with the first surface of the cover body; and a second rod hole formed through the third surface of the first groove and the second surface of the cover body, the second rod being inserted into the second rod hole; One side of the first rod and the first side of the cover are located on the same plane; One surface of the second rod and the third surface of the cover body are located on the same plane.

4. The display device according to claim 3, wherein: The first detection pin comprises: A cylinder, wherein an opening is provided at one end of the cylinder and a space is formed inside the cylinder; a plunger coupled to the opening of the barrel, the plunger comprising a plunger body and a plunger head, the plunger body being located inside the barrel, the plunger head extending from the plunger body and being located outside the barrel and having a smaller diameter than that of the plunger body; and An elastic member is located inside the cylinder and elastically supports the plunger. One end of the elastic member is combined with the other end of the cylinder, and the other end of the elastic member is combined with the plunger body.

5. The display device according to claim 4, wherein: The pin assembly further includes a pin cover body accommodating the first detection pin and the second detection pin; The pin cover body comprises: a groove formed by being recessed from the first surface of the pin cover body, the terminal assembly being inserted into the groove, and the groove including a second surface located further rearward than the first surface of the pin cover body; a first pin hole formed through the second surface of the groove and a third surface of the pin cover body located on the opposite side of the first surface, the first detection pin being inserted into the first pin hole; and a second pin hole formed through the second surface of the groove and the third surface of the pin cover, the second detection pin being inserted into the second pin hole; The plunger head protrudes beyond the second surface of the groove of the pin cover and is located in the first groove of the pin cover.

6. The display device according to claim 5, wherein: The other end of the cylinder has a diameter larger than the diameter of the cylinder; The first pin hole comprises: a first region having a first diameter, wherein the plunger head is located in the first region; a second region extending from the first region and having a second diameter greater than the first diameter, the cylinder being located in the second region; and a third region extending from the second region and having a third diameter greater than the second diameter, the third region including a fourth surface located further forward than the third surface of the pin cover, the other end of the cylinder being located in the third region; The other end of the cylindrical body contacts the fourth surface of the pin cover body, and the other end of the cylindrical body protrudes rearwardly than the third surface.

7. The display device according to claim 1, wherein: The head includes a rear cover, the rear cover forms the back of the head, and the rear cover includes a mounting groove for the terminal assembly to be arranged; The mounting slot comprises: A first installation part; a second mounting portion formed by punching forward from the first mounting portion; and a third mounting portion, protruding rearward from the rear cover and extending along a periphery of the first mounting portion; The second mounting portion includes a terminal hole, which is formed through the second mounting portion and is aligned with the terminal and allows the terminal to be exposed to the rear of the rear cover.

8. The display device according to claim 7, wherein: The bracket includes a mounting member, the mounting member is coupled to the mounting slot, and the pin assembly is located on the mounting member; The mounting member comprises: a front mounting member facing the mounting groove; a rear mounting member, located behind the front mounting member and combined with the bracket; The front mounting member comprises: a first portion facing the first mounting portion; a second portion protruding forward from the first portion and facing the second mounting portion; and A pin hole, formed in the first portion, is aligned with the terminal hole.

9. The display device according to claim 8, wherein: The connecting piece comprises: A first substrate, located between the display panel and the back cover, the terminal being mounted on the first substrate; and a second substrate, located between the front mounting member and the rear mounting member, the pin being mounted on the second substrate; The pin passes through the pin hole and protrudes toward the front of the front mounting member.

10. The display device according to claim 9, wherein: The mounting groove includes a coupling groove, which is formed by being recessed forward from the second mounting portion and forms the periphery of the terminal hole; The terminal passes through the terminal hole and is located in the combining groove; The pin is inserted into the coupling groove.

11. The display device according to claim 10, wherein: The pin assembly includes a connecting portion protruding from the other end of the cylinder and connected to the second substrate; A power transmission unit for transmitting the external power is electrically connected to the second substrate at the rear of the second substrate.

12. The display device according to claim 8, wherein: The mounting groove includes a first magnet groove, the first magnet groove is formed by being recessed from the front side of the second mounting portion to the rear side, and the first magnet is inserted into the first magnet groove; The mounting member includes a second magnet groove that is formed by being recessed forward from the back surface of the front mounting member, and a second magnet facing the first magnet is inserted into the second magnet groove.

13. The display device according to claim 1, wherein: The terminal further includes a third rod, the third rod is formed to the first length, and one side of the third rod is located on the same plane as one side of the first rod; The first rod, the second rod and the third rod are sequentially arranged up and down; The second rod is eccentrically arranged to one side relative to the first rod and the third rod.

14. The display device according to claim 1, wherein: After the first detection pin contacts the first rod, the second detection pin contacts the second rod; If the second detection pin contacts the second rod, current is applied.

15. The display device according to claim 1, wherein: After the contact resistance generated by the first detection pin contacting the first rod is stabilized, the second detection pin contacts the second rod; If the second detection pin contacts the second rod, current is applied.

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