Power supply device for a vehicle door window

Abstract

The present invention provides a power supply device for a door glass of a vehicle, the vehicle including a door glass installed on a door of the vehicle and configured to be movable in upward and downward directions, wherein an operation module is installed on the door glass to use power, and a power supply part is installed on the door. The power supply device includes a rail installed on the door and provided with a rail terminal electrically communicated with the power supply part, and a slider provided with a contactor, the contactor being slidably contacted with the rail terminal and electrically communicated with the operation module when moving in the upward and downward directions integrally with the door glass, wherein the contactor and the rail terminal always maintain an electrically communicable state regardless of a change in the position of the door glass.

Description

Technical Field

[0001] This invention relates to a power supply device for vehicle door glass. Background Technology

[0002] The vehicle's doors are fitted with glass for lighting and ventilation.

[0003] Since the car door glass is transparent, a tinted film is attached to it to protect privacy, thereby reducing solar radiation and blocking ultraviolet rays.

[0004] Meanwhile, various techniques for freely adjusting the concentration of the tinted film have been explored in recent years. Furthermore, a technique has been experimented with to use door glass to display information like a display device, or to allow passenger touch input like a touchpad.

[0005] To implement this technology, the necessary power must be provided to operate the car door windows.

[0006] However, since the door glass is installed for ventilation by moving up and down via adjusters mounted on the door, it is not easy to power it. As a solution for powering the door glass that moves up and down, a wireless power transmission system could be used, but this would excessively increase costs. Furthermore, as the position of the door glass changes with its upward and downward movement, power transmission might fail if the positions of the transmitting and receiving modules change. In addition, the size of the wireless power transmission system makes assembly difficult, and it does not meet electromagnetic wave regulations, making it difficult to apply wireless power transmission systems to actual vehicles.

[0007] The descriptions in this section are intended to aid in understanding the background of the invention and may include content previously unknown to those skilled in the art. Summary of the Invention

[0008] This invention relates to a power supply device for a vehicle door glass. Specific embodiments relate to a power supply device for a vehicle door glass that can supply power to the door glass mounted on the vehicle door, regardless of whether the door glass moves up or down.

[0009] The present invention can solve the problems in the prior art, and embodiments of the present invention provide a power supply device for a vehicle door glass that can supply power to the door glass regardless of the upward and downward movement of the door glass.

[0010] According to an embodiment of the present invention, a power supply device for a vehicle door glass includes: (in the power supply device for a vehicle door glass, the vehicle includes a door glass mounted on a vehicle door for upward and downward movement, an operating module mounted on the door glass for using electricity, and a power supply unit mounted on the door) a track mounted on the door along the upward and downward movement direction of the door glass and provided with track terminals electrically connected to the power supply unit; and a slider provided with a contactor that slidably contacts the track terminals and is electrically connected to the operating module when moving upward and downward integrally with the door glass, wherein the contactor and the track terminals remain electrically connected regardless of the change in position of the door glass.

[0011] The track is installed on the inner panel of the door along the upward and downward movement direction of the door glass, and a portion of the sliding element is installed inside the track to be movable upward and downward.

[0012] The track terminal is installed inside the track along the longitudinal direction of the track and is electrically connected to the power supply unit. The contactor is installed to be electrically connected to the sliding terminal installed inside the sliding member. The portion of the contactor adjacent to the end of the contactor is formed to protrude toward the track terminal and is elastically supported toward the track terminal, so that the contactor contacts the track terminal in a slidable state.

[0013] The track is formed as part of an upper surface with an opening in its cross-section, and the slider includes a connector connected to the operating module to be electrically conductive to each other, a sliding portion housed inside the track, and a neck that connects the connector to the sliding portion and passes through the upper surface of the track.

[0014] The track terminal is formed on the inner upper surface of the track along the longitudinal direction of the track, and the contactor is mounted on the upper surface of the sliding part.

[0015] The power supply device for the door glass of a vehicle further includes a sliding cover covering the upper surface of a track and a rubber component made of an elastic material, the rubber component being disposed in the space between the sliding cover and the upper surface of the track along the longitudinal direction of the track and being mounted to make close contact between the sliding cover and the neck.

[0016] A pair of rubber parts are configured to face each other to make close contact with the two side surfaces of the neck, and the part where the slider is located makes close contact with the two side surfaces of the neck according to the sliding of the slider, while in the part without the slider, the ends of the rubber parts make close contact with each other to waterproof.

[0017] The power supply device for the vehicle door glass further includes an upper track cover and a lower track cover, the upper track cover being mounted above the inner panel of the door and engaging with the top of the track, and the lower track cover being mounted below the upper track cover at the inner panel of the door and engaging with the bottom of the track.

[0018] At least one of the upper and lower track covers has a track cover terminal inserted therein, the track cover terminal connecting the power supply to the track for electrical conduction.

[0019] The lower track cover has a track cover terminal inserted therein, which electrically connects the power supply unit and the track terminal.

[0020] Each of the upper and lower track covers has a damper on one side.

[0021] A cable is installed that is drawn from the power supply unit to be electrically connected to the rail terminals, and the portion of the cable drawn from the power supply unit is surrounded by a sealing ring to prevent water leakage.

[0022] The power supply device for the vehicle door glass further includes a retainer housing the bottom end of the door glass and an indicator fastened to the retainer, the indicator having a connector for a slider mounted therein and connected to the retainer for electrical conduction, wherein the operating module is electrically connected to the retainer and the slider is electrically connected to the indicator.

[0023] The retainer includes a glass receiving portion at the bottom of the door glass and a retainer terminal inserted into the retainer and electrically connected to the operation module.

[0024] The indicator has a socket formed on one side, into which a connector of the slider is inserted, and has a slider terminal installed inside the slider and an indicator terminal that electrically connects the retainer terminal inserted therein.

[0025] A fastening hole is formed in the retainer, the fastening hole having a thread formed in the inner circumferential surface, a through hole is formed in the indicator to pass through the indicator, and with the fastening hole and the through hole overlapping each other, the fastening bolt is fastened to the fastening hole, and the retainer and the indicator are fastened.

[0026] The end of the retainer terminal inserted into the retainer is formed to expose toward the indicator at a position adjacent to the fastening hole, and the end of the indicator terminal inserted into the indicator is formed to expose toward the retainer at a position adjacent to the through hole, and when the retainer and the indicator are fastened, the retainer terminal and the indicator terminal are electrically conductive to each other.

[0027] A waterproof gasket is further disposed on the outside of the retainer terminals and the indicator terminals in the retainer and indicator.

[0028] A retaining portion protruding from the retainer is formed on one side of the retainer, and a retainer receiving portion that accommodates the retaining portion is formed in the indicator.

[0029] The power supply unit is an inverter.

[0030] According to an embodiment of the present invention, a power supply device for a vehicle door glass having the above configuration can stably supply power to the door glass from an inverter installed on the vehicle door, regardless of whether the door glass moves up or down.

[0031] Furthermore, compared to wireless power transmission systems, it can save costs, reduce size, and meet electromagnetic wave requirements, making the power supply device advantageous for use in actual vehicles.

[0032] Furthermore, since the power supply device used for the vehicle door glass has a waterproof structure, it can prevent short circuits or leakage caused by water even if water penetrates into the door. Attached Figure Description

[0033] Figure 1 This is a schematic diagram illustrating a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0034] Figure 2 This is a perspective view showing a retainer in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0035] Figure 3 This is a perspective view showing the state in which the retainer and the door glass are secured in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0036] Figure 4 This is a front view showing a retainer in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0037] Figure 5 It is along Figure 4 The cross-sectional view obtained by line II is shown in the figure.

[0038] Figure 6 This is a perspective view showing an indicator in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0039] Figure 7 This is a front view showing an indicator in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0040] Figure 8 It is along Figure 7 The cross-sectional view obtained by line II-II is shown in the figure.

[0041] Figure 9 yes Figure 8 An enlarged view of part A shown in the image.

[0042] Figure 10 This is a perspective view showing the state in which the indicator and the slider are secured in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0043] Figure 11 It is along Figure 7 The cross-sectional view obtained by line III-III is shown in the figure.

[0044] Figure 12 This is a front view showing the state in which the indicator, slider, and track are secured in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0045] Figure 13 yes Figure 12 An enlarged view of part B shown in the image.

[0046] Figure 14 It is along Figure 13 The cross-sectional view obtained by line IV-IV is shown in the figure.

[0047] Figure 15 It is along Figure 13 The cross-sectional view obtained by line VV is shown in the figure.

[0048] Figure 16 This is a perspective view showing the state in which the track and the lower track cover are secured in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0049] Figure 17 This is a front view showing the state in which the track and lower track cover are secured in a power supply device for a vehicle door glass according to an embodiment of the present invention.

[0050] Figure 18 It is along Figure 17 The cross-sectional view obtained by line VI-VI is shown in the figure.

[0051] Figure 19 This is a perspective view showing a portion of the lower track cover and inverter connected in a power supply device for a vehicle door glass according to an embodiment of the present invention. Detailed Implementation

[0052] In the following, a power supply device for a vehicle door glass according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0053] According to an embodiment of the present invention, a power supply device for a vehicle door glass includes: a door glass 20, which is mounted on a vehicle door and is movable upward and downward; an operation module 21, which is mounted on the door glass 20 to use electricity; a track 36, which is mounted on the door along the upward and downward movement direction of the door glass 20 and is provided with a track terminal 36a electrically connected to a power supply unit 39 (the power supply device for the vehicle door glass includes a power supply unit 39 mounted on the door); and a slider 35, which slidably contacts the track terminal 36a and is provided with a contactor 35e, which is electrically connected to the operation module 21 when moving upward and downward integrally with the door glass 20, wherein the contactor 35e and the track terminal 36a are configured to always remain electrically conductive according to the change in position of the door glass 20.

[0054] The door glass 20 is mounted on the vehicle door. The inner panel 10 of the door is equipped with an adjuster (not shown) that enables the door glass 20 to move up and down, and the door glass 20 moves up and down via the adjuster.

[0055] The operation module 21 is mounted on the door glass 20 to consume power during operation. The operation module 21 may be an adjustable color film, a display device for displaying images, a touchpad for user input, etc. The operation module 21 must receive the power required for operation from the vehicle's power supply unit 39.

[0056] Therefore, embodiments of the present invention provide a structure in which the power supply unit 39 is connected to the operation module 21 in a wired manner, regardless of the position of the door glass 20.

[0057] Figure 1 A power supply device for a vehicle door glass, according to an exemplary embodiment of the present invention, is shown as viewed from the outside of the vehicle.

[0058] The retainer 31 is fastened to the bottom of the door glass 20.

[0059] The retainer 31 includes a glass receiving portion 31a for receiving the door glass 20, a fastening hole 31b for use when fastened to the indicator 32, a socket 31c for inserting the power connector 21a, a plurality of retainer terminals 31d disposed within the retainer 31, and a fixing portion 31e protruding from the retainer 31.

[0060] The glass receiving portion 31a is formed as part of the bottom end of the door glass 20. The bottom end of the door glass 20 is inserted into the glass receiving portion 31a, so that the retainer 31 is fastened to the door glass 20.

[0061] The fastening hole 31b is formed to pass through the retainer 31 below the glass receiving portion 31a in the retainer 31. When fastened to the indicator 32, the fastening hole 31b is threaded by inserting a fastening bolt 34. For this purpose, threads are formed on the inner circumferential surface of the fastening hole 31b.

[0062] A socket 31c is formed on one side of the retainer 31. The socket 31c has a power connector 21a inserted therein, which is electrically connected to an operating module 21 mounted on the door glass 20.

[0063] Retainer terminal 31d is inserted into retainer 31. Since retainer 31 is formed by injection molding, retainer 31 is formed by insertion injection molding with pre-formed retainer terminal 31d inserted into the molded part. Multiple retainer terminals 31d are provided. At least two retainer terminals 31d are formed and located within retainer 31 in a mutually insulated state. One end of retainer terminal 31d is located on socket 31c and extends inward so that the other end is positioned adjacent to the circumference of fastening hole 31b. At this time, the other end of retainer terminal 31d is exposed to the outside from the circumference of fastening hole 31b for electrical connection with indicator 32.

[0064] The power connector 21a is inserted into the socket 31c, so that the retainer 31 and the door glass 20 are connected to each other and electrically conductive.

[0065] The fixing part 31e is formed to protrude from the circumference of the fastening hole 31b in a direction perpendicular to the retainer 31.

[0066] The indicator 32 is fastened to the retainer 31 and contacts the bottom end of the door glass 20 to support the door glass 20. The center portion of the top of the indicator 32 is fastened to the retainer 31, and its two ends respectively support the bottom end of the door glass 20.

[0067] The indicator 32 or the assembly of the indicator 32 and the retainer 31 is fixed to an adjuster (not shown) installed inside the door, and the door glass 20 moves up and down together as the indicator 32 or the assembly of the indicator 32 and the retainer 31 moves up and down according to the operation of the adjuster.

[0068] The indicator 32 has a through hole 32a for fastening with the retainer 31. A fastening bolt 34 for fastening with the retainer 31 passes through the through hole 32a formed in the indicator 32.

[0069] A socket 32b is formed on one side of the indicator 32, and the slider 35 is inserted into the socket 32b.

[0070] An indicator terminal 32c for power transmission is disposed inside the indicator 32. One end of the indicator terminal 32c is located on the socket 32b, while the other end is positioned adjacent to the circumference of the through hole 32a. The indicator terminal 32c is formed such that the through hole 32a extends from the socket 32b. Like the retainer terminal 31d, a plurality of indicator terminals 32c are also provided, and the number of indicator terminals 32c and retainer terminals 31d is set to be the same.

[0071] The indicator 32 and the retainer 31 are fastened by a fastening bolt 34. A retainer receiving portion 32d, which accommodates the fixing portion 31e, is formed on the indicator 32, and the indicator 32 and the retainer 31 are fastened by the fastening bolt 34 with the fixing portion 31e located inside the retainer receiving portion 32d. The retainer 31 is placed on the indicator 32 by allowing the fixing portion 31e to be accommodated in the retainer receiving portion 32d so that the fastening hole 31b and the through hole 32a mate. Then, the fastening bolt 34 passes through the through hole 32a to be threadedly engaged with the retainer 31 in the fastening hole 31b, thereby fastening the retainer 31 and the indicator 32.

[0072] At this time, as Figure 9 As shown, when the retainer 31 and the indicator 32 are placed, the retainer terminal 31d and the indicator terminal 32c are in contact with each other to be electrically connected to each other.

[0073] Meanwhile, to prevent water from seeping between the retainer 31 and the indicator 32, a waterproof gasket 33 is used on the exterior of the exposed portion of the retainer terminal 31d or the indicator terminal 32c. The waterproof gasket 33 prevents water introduced into the door during rain or washing from seeping into the contact surface between the retainer terminal 31d and the indicator terminal 32c.

[0074] The retainer 31 and the indicator 32 are also components of the adjuster used to move the door glass 20 up and down.

[0075] The slider 35 is inserted into the socket 32b formed on the indicator 32, and slides in contact with the track 36 fixedly mounted on the inner door panel 10 while moving up and down together with the indicator 32. Since the slider 35 remains in contact with the track 36 even when the door glass 20 moves up and down, power can be supplied to the door glass 20 as it moves up and down.

[0076] The slider 35 includes a connector 35a that is inserted into a socket 32b formed on the indicator 32, a neck 35b passing through the track 36, a sliding portion 35c located inside the track 36, a slider terminal 35d formed to extend from the connector 35a to the sliding portion 35c, and a contactor 35e that is coupled to the slider terminal 35d and resiliently contacts the track terminal 36a formed on the track 36.

[0077] Connector 35a is located on top of slider 35 and is inserted into socket 32b of indicator 32.

[0078] The neck 35b is formed to extend downward from the connector 35a. The neck 35b is formed to be thinner than the connector 35a or the slide portion 35c, and is mounted on the track to pass through the track 36.

[0079] A sliding portion 35c is formed on the bottom end of the neck 35b. The sliding portion 35c is guided by the track 36, which allows the slider 35 to move easily upward and downward.

[0080] The sliding terminal 35d is formed to extend from the connector 35a to the sliding portion 35c. When the slider 35 is injection molded, the sliding terminal 35d is pre-inserted, so that the sliding terminal 35d is located inside the slider 35. The top end of the sliding terminal 35d is exposed on one side of the connector 35a for electrical connection to the indicator terminal 32c, allowing it to be electrically conductive with the indicator terminal 32c, while the bottom end is exposed on one side of the sliding portion 35c.

[0081] Contactor 35e is connected to slider terminal 35d. One end of contactor 35e is connected to slider terminal 35d, the middle portion is fixed to slider portion 35c, and the other end is fastened to slider portion 35c in a spaced-apart manner. Contactor 35e is mounted in a protrusion extending from slider portion 35c, such that contactor 35e is fastened to slider portion 35c. Contactor 35e is made of a resilient metallic material, and because its other end is spaced from slider portion 35c, when the other end of contactor 35e or a portion adjacent to the other end elastically contacts track terminal 36a, slider terminal 35d and track terminal 36a are connected to be electrically conductive to each other. In particular, in order to allow contactor 35e to slide easily in track terminal 36a while in contact with track terminal 36a, the end of contactor 35e is formed to protrude toward track terminal 36a.

[0082] The track 36 is installed on the inner door panel 10 along the direction of upward and downward movement of the door glass 20.

[0083] The cross section of track 36 is formed consistently in the longitudinal direction of track 36. A portion of the upper surface of track 36 is open, thereby positioning the neck 35b of slider 35, and the remaining portion of track 36 accommodates the sliding portion 35c of slider 35, allowing slider 35 to slide along the longitudinal direction of track 36.

[0084] The track 36 has a track terminal 36a on its inner upper surface. The track terminal 36a contacts the sliding member terminal 35d to be electrically conductive. Because the end of the sliding member terminal 35d is elastically formed to contact the track terminal 36a, the sliding member terminal 35d is always in contact with the track terminal 36a regardless of the position of the sliding member 35. According to this structure, the track 36 and the sliding member 35 are connected to always maintain an electrically conductive state, so that the door glass 20 remains electrically conductive regardless of its position when moving up or down.

[0085] A rubber component 36b is provided on the top of the track 36, and a sliding cover 36c that accommodates the rubber component 36b is fastened to the track 36.

[0086] The rubber component 36b is configured such that its front end contacts the neck 35b of the slider 35. Because the rubber component 36b is made of an elastic material such as synthetic rubber, its front end can easily deform, ensuring close contact between the front end of the rubber component 36b and the neck 35b for waterproofing. The rubber components 36b are mounted on either side of the neck 35b. Furthermore, even when the slider 35 moves, and the neck 35b between the rubber components 36b is removed, the rubber components 36b remain in contact with each other, thus maintaining waterproofing.

[0087] The slider cover 36c engages with the upper surface of the track 36 to ensure space for mounting the rubber part 36b. The slider cover 36c also has an opening or slit formed along the longitudinal direction of the track 36, allowing the neck 35b to pass through the slider cover 36c.

[0088] The upper track cover 37 and the lower track cover 38 are installed on the inner panel 10 of the door.

[0089] The upper track cover 37 and the lower track cover 38 are mounted on the inner door panel 10 in a vertically spaced manner, and the top and bottom ends of the track 36 are respectively accommodated and fixed to the upper track cover 37 and the lower track cover 38. Dampers 37a and 38a for isolating vibration are respectively provided on one side of the upper track cover 37 and the lower track cover 38, and bolts pass through the dampers 37a and 38a to fasten them to the inner door panel 10, so that the upper track cover 37 and the lower track cover 38 are mounted on the inner door panel 10.

[0090] It is provided with a track cover terminal 38c for connecting the inverter 39 and the track 36 to at least one of the upper track cover 37 and the lower track cover 38 for electrical conduction.

[0091] Preferably, the track cover terminal 38c is disposed on the lower track cover 38. That is, as Figure 16As shown, when the lower track cover 38 is injection molded, the lower track cover 38 is inserted into the lower track cover 38 with the track cover terminal 38c inserted into it, so that the track cover terminal 38c is located inside the lower track cover 38.

[0092] One end of the track cover terminal 38c is connected to the inverter 39, and the other end is connected to the track terminal 36a for electrical conduction. When the lower track cover 38 is installed into the end of the track 36 and the track 36 engages with the lower track cover 38, the track terminal 36a and the track cover terminal 38c engage to become electrically conductive with each other (see [link to documentation]). Figure 17 ).

[0093] Inverter 39 is an example of a power supply unit that supplies power from the vehicle to the door glass 20. Inverter 39 is mounted on the inner door panel 10. Inverter 39 serves as the power supply for the door glass 20. Inverter 39 is used to amplify voltage, and a control module for controlling the power supply as needed can be located inside inverter 39.

[0094] The power output from the inverter 39 is supplied to the door glass 20 by connecting the lower track cover 38, track 36, slider 35, indicator 32 and retainer 31 to maintain their electrical conductivity.

[0095] For this purpose, the inverter 39 is connected to the lower rail cover 38 for electrical conduction. A connector 39c is formed at the end of the cable 39a connected to the inverter 39, and the connector 39c is inserted into a socket 38b formed on the lower rail cover 38, so that the inverter 39 is connected to the lower rail cover 38 for electrical conduction.

[0096] Meanwhile, to ensure waterproofing between the inverter 39 and the cable 39a, a sealing ring 39b is provided on the portion of the cable 39a that is pulled out from the inverter 39.

[0097] At least two retainer terminals 31d, indicator terminals 32c, slider terminals 35d, track terminals 36a, and track cover terminals 38c are provided respectively. Two terminals are provided when simply supplying power, three terminals are provided when grounding, and three or more terminals are provided when control signals are also transmitted.

[0098] Furthermore, the retainer terminal 31d, indicator terminal 32c, slider terminal 35d, track terminal 36a, and track cover terminal 38c are all made of a metallic material that serves as a conductor.

Claims

1. A power supply device for a door glass of a vehicle, the vehicle including a door glass mounted on a door of the vehicle and configured to be movable in upward and downward directions, wherein, An operation module is mounted on a door glass and configured to use electric power, and a power supply unit is mounted on a door, the power supply device including: a rail mounted on the door in upward and downward directions of the door glass and provided with a rail terminal configured to be electrically conducted with the power supply unit; a slider provided with a contactor that is slidably in contact with the rail terminal and configured to be electrically conducted with the operation module when moving in the upward and downward directions integrally with the door glass, a holder that accommodates a bottom end of the door glass; and an indicator fastened to the holder, a connector of the slider being mounted in the indicator, the indicator being connected to the holder to be electrically conductive; wherein the operation module is configured to be electrically conducted with the holder, and the slider is configured to be electrically conducted with the indicator; wherein the contactor and the rail terminal are configured to always maintain a state of being electrically conductive regardless of a change in position of the door glass.

2. The power supply device for a door glass of a vehicle according to claim 1, wherein: the rail is mounted on an inner panel of the door in upward and downward directions of the door glass; a portion of the slider is mounted inside the rail to be upwardly and downwardly movable.

3. The power supply device for a door glass of a vehicle according to claim 1, wherein: the rail terminal is mounted inside the rail in a longitudinal direction of the rail and is configured to be electrically conducted with the power supply unit; the contactor is configured to be electrically conductive with a slider terminal mounted inside the slider; a portion of the contactor adjacent to an end portion is protruded toward the rail terminal and is elastically supported toward the rail terminal, such that the contactor is in contact with the rail terminal in a slidable state.

4. The power supply device for a door glass of a vehicle according to claim 1, wherein: a portion of an upper surface of the rail is open in a cross-sectional view; the slider includes a connector connected to the operation module and configured to be electrically conductive, a sliding portion accommodated inside the rail, and a neck portion connecting the connector to the sliding portion and passing through the upper surface of the rail.

5. The power supply device for a door glass of a vehicle according to claim 4, wherein: the rail terminal is provided on an inner upper surface of the rail in a longitudinal direction of the rail; the contactor is mounted on an upper surface of the sliding portion.

6. The power supply device for a door glass of a vehicle according to claim 4, further comprising: a slider cover covering the upper surface of the rail; and a rubber member made of an elastic material, the rubber member being provided in a space between the slider cover and the upper surface of the rail in the longitudinal direction of the rail and mounted to be in close contact with the neck portion from the slider. A portion where the slider is located is in close contact with both side surfaces of the neck portion according to sliding of the slider, and in a portion where the slider is not located, end portions of the pair of rubber members are in close contact with each other to prevent water.

7. The power supply device for a door glass of a vehicle according to claim 6, the rubber members being a pair of rubber members facing each other in close contact with the two side surfaces of the neck portion, wherein A portion where the cable is drawn out from the power supply unit is surrounded by a sealing ring to prevent water.

8. The power supply device for vehicle door glass according to claim 1, further comprising a cable drawn out from the power supply portion to electrically conduct with the rail terminal, wherein, The power supply unit is an inverter.

9. The power supply device for vehicle door glass according to claim 1, wherein The power supply device further includes:

10. The power supply device for vehicle door glass according to claim 1, wherein ​ an upper rail cover installed above an inner panel of a door and coupled to a top end of the rail; and a lower rail cover installed below the upper rail cover at the inner panel of the door and coupled to a bottom end of the rail.

11. The power supply device for a door glass of a vehicle according to claim 10, wherein The upper rail cover or the lower rail cover has a rail cover terminal inserted therein, the rail cover terminal being configured to connect the power supply part to the rail to be electrically conductive.

12. The power supply device for a door glass of a vehicle according to claim 10, wherein The lower rail cover has a rail cover terminal inserted therein, the rail cover terminal being configured to connect the power supply part to the rail to be electrically conductive, and to electrically conduct the power supply part and the rail terminal.

13. The power supply device for a door glass of a vehicle according to claim 10, wherein Each of the upper rail cover and the lower rail cover is provided with a damper at one side thereof.

14. The power supply device for vehicle door glass according to claim 1, wherein The holder includes: a glass receiving part receiving a bottom end of a door glass; and a holder terminal inserted into the holder and configured to be electrically conductive with the operation module.

15. The power supply device for a door glass of a vehicle according to claim 14, wherein The indicator includes a socket into which a connector of the slider is inserted at one side of the socket, the power supply device further including a slider terminal installed inside the slider and an indicator terminal configured to electrically conduct the holder terminal inserted therein. 16.The power supply device for a door glass of a vehicle according to claim 15, further comprising: a fastening hole having a screw thread formed in an inner circumferential surface, the fastening hole being formed in the holder; a through hole formed in the indicator and passing through the indicator; and a fastening bolt fastened to the fastening hole in a state in which the fastening hole and the through hole coincide with each other, wherein the holder and the indicator are fastened. 17.The power supply device for a door glass of a vehicle according to claim 16, wherein: an end portion of the holder terminal inserted into the holder is exposed toward the indicator at a position adjacent to the fastening hole; an end portion of the indicator terminal inserted into the indicator is exposed toward the holder at a position adjacent to the through hole; when the holder and the indicator are fastened, the holder terminal and the indicator terminal are configured to be electrically conductive with each other. 18.The power supply device for a door glass of a vehicle according to claim 17, further comprising a waterproof pad provided at an outer portion of the holder terminal and the indicator terminal in the holder and the indicator. 19.The power supply device for a door glass of a vehicle according to claim 1, wherein: one side of the holder is formed with a fixing portion protruding from the holder; a holder receiving part receiving the fixing portion is formed in the indicator. ​

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