Door glass thawing device

Abstract

The present invention relates to a vehicle door glass thawing device, and belongs to the technical field of vehicle window glass heating. The vehicle door glass thawing device of the present invention comprises a PTC heating wire, a conductive device, a PTC relay, a vehicle battery, an ECU and a PTC heating wire switch; the ECU and the vehicle battery are respectively connected to the PTC relay, and the PTC heating wire switch is connected to the ECU; the two ends of the PTC heating wire are arranged on one side of the bottom of the vehicle door glass and are provided with heating wire terminals; the conductive device comprises a glass side fixing bracket assembly, a glass side conductive assembly and a vehicle door side conductive assembly; when the vehicle door glass is in the highest position, the glass side conductive assembly contacts the vehicle door side conductive assembly; when the vehicle door glass leaves the highest position, the glass side conductive assembly separates from the vehicle door side conductive assembly. The vehicle door glass thawing device of the present invention designs the conductive device therein into three component parts, so as to realize the assembly in the narrow space between the bottom of the front side of the glass and the vehicle door sheet metal.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle window glass heating, and more particularly to a vehicle door glass thawing device. Background Art

[0002] In a severely cold environment, the car window glass may be frozen and thus cannot be opened. Chinese invention patent CN107091030B discloses a car window glass, on which a heater is installed. The heater works under the control of a defrosting command issued by a car window glass driver. The heater may be an electric heating wire embedded in the window glass, but the specific electrical connection structure is not disclosed.

[0003] CN109552252A discloses a car door window glass heater and an automatic heating device, see Figure 1-3 It includes a heating wire 1 arranged on a door glass 2, the heating wire 1 is arranged along the length direction of the glass and has electrical contact blocks 16 at both ends, and electrodes 3 arranged on both sides of the window are matched with the electrical contact blocks 16, the electrode 3 can be arranged in a Z shape, and the electrical spring 15 is correspondingly arranged between the electrode 3 and the electrical contact block 16, and the electrical spring 15 is arranged on the electrode seat 14, wherein the electrical spring 15 is gradually squeezed during the rising process of the door glass 2, and when the door glass 2 closes the car door window, the two ends of the heating wire 1 are electrically connected to the two electrical contact blocks 16 respectively, and the other end of the electrical spring 15 is pressed against the corresponding electrode 3 by the door glass 2, so that a conductive circuit can be formed through a power switch. In the conductive structure of CN109552252A, the heating wire needs to be arranged in the middle of the glass, and cannot be arranged on its outer side. Moreover, the thermal conductivity of the glass is generally poor, so the heating and thawing process is slow. In addition, the electrodes and electrical springs are arranged on the sides, which are subject to friction and compression during the lifting and lowering of the glass, and are easily deformed, which can easily lead to poor contact and setting failure, and poor reliability. Summary of the invention

[0004] In order to solve the above technical problems existing in the prior art, an object of the present invention is to provide a vehicle door glass thawing device.

[0005] The vehicle door glass thawing device of the present invention comprises a PTC heating wire, a conductive device, a PTC relay, a vehicle-mounted battery, an ECU and a PTC heating wire switch; the vehicle controller and the vehicle-mounted battery are respectively connected to the PTC relay, and the PTC heating wire switch is connected to the ECU; the PTC heating wire is arranged at the outer edge of the vehicle door glass, and the two ends of the PTC heating wire are arranged on one side of the bottom of the vehicle door glass and are provided with heating wire terminals connected to the ends;

[0006] The conductive device comprises a glass side fixing bracket assembly, a glass side conductive assembly and a door side conductive assembly;

[0007] The glass side fixing bracket assembly is arranged on one side of the lower end of the door glass;

[0008] The glass-side conductive component is clamped on the glass-side fixed bracket component, and a connector and a conductor are provided on the glass-side conductive component, and the connector is connected to the heating wire terminal;

[0009] The door-side conductive component is installed on the door sheet metal opposite to the door glass, and the door-side conductive component is connected to the PTC relay through the door wiring harness, and the conductors of the door-side conductive component and the glass-side conductive component are arranged opposite to each other;

[0010] When the door glass is at the highest position, the conductor is in contact with the door-side conductive component; when the door glass leaves the highest position, the conductor is separated from the door-side conductive component.

[0011] Wherein, the two ends of the PTC heating wire are arranged to extend downward along the top edge and two side edges of the door glass.

[0012] The PTC relay and the conductive device are grounded via wires respectively, and the PTC relay is connected to the negative electrode of the battery via a battery grounding wire.

[0013] Among them, the glass side fixing bracket assembly includes a glass pressing rubber, a glass pressing sheet metal, a connecting sheet metal and a fixing bracket, the glass pressing rubber is arranged on both sides of the glass at the lower end of the vehicle door glass and is pressed on both sides of the glass at the lower end of the vehicle door glass through the glass pressing sheet metal, and the connecting sheet metal is fixed on the outer side of the glass pressing sheet metal, the fixing bracket is fixed on the inner side surface of the connecting sheet metal, the upper and lower ends of the fixing bracket are bent to form a snap-fit ​​flange, and the fixing bracket is provided with a snap-fit ​​limiting hole.

[0014] Among them, the glass-side conductive component includes a base body, an upper cover, a conductor, an insulating guide slider, a spring and a wire; a connecting structure that cooperates with the fixed bracket is provided on one side of the base body, and two connecting columns are provided on the upper surface of the base body, and a center hole connected to the lower surface of the base body is provided in the connecting column, and the base body is also provided with a wiring hole that can accommodate the wire to pass through.

[0015] The insulating guide slider comprises a column with a central axis hole, and a plurality of protrusions cooperating with the grooves on the inner wall of the central hole are arranged on the middle periphery of the column; the end of the conductor is connected to the wire, and the conductor and the wire pass through the central axis hole of the insulating guide slider and the conductor is screwed and fixed to the central axis hole, and the upper end of the conductor is located on the column of the insulating guide slider; the spring penetrates under the wire and the column of the insulating guide slider and the upper end of the spring abuts against the lower end of the protrusion, and then the spring and the insulating guide slider equipped with the conductor are assembled into the central hole of the connecting column, and the wire passes through the lower end of the central hole; the upper cover is screwed and fixed to the connecting column, and the upper section of the column of the insulating guide slider extends from the through hole in the middle of the upper cover and is located above the upper cover, and the wire passes through the wiring hole from the lower end and extends from the upper end of the wiring hole, and the end of the wire is connected with a connector arranged opposite to the heating wire terminal, and the connector is connected to the heating wire terminal.

[0016] Among them, the sheet metal flange of the fixing bracket is clamped between the limiting protrusions of the connecting structure, the sheet metal flange is embedded in the gap between the outer card cover and the side wall of the connecting structure, and the elastic limiting protrusion is clamped in the clamping limiting hole on the fixing bracket.

[0017] Among them, the conductive component on the vehicle door side includes a mounting column, a wiring harness interface and two conductive terminals, the wiring harness interface is arranged on the mounting column, and limiting protrusions and an outer card cover are arranged at the upper and lower ends of the inner side of the mounting column, and an elastic limiting protrusion is arranged in the middle part of the inner side of the mounting column, the outer card cover covers the limiting protrusion, and a gap is formed between the inner side of the mounting column and the outer card cover on the opposite side of the two limiting protrusions; the front end of the wiring harness interface is a front opening, and the lower end of the wiring harness interface is a lower opening, and a grid plate is arranged on the lower opening, and the grid plate divides the lower opening into two parts, an inner part and an outer part; the two conductive terminals are installed in the wiring harness interface from the front opening.

[0018] Among them, the lower ends of the two conductive terminals have a conductive touch plate, and the upper ends are provided with a conductive upper panel, and the conductive touch plates are respectively arranged in the inner and outer parts of the lower opening, and the conductive upper panel is located near the front opening; the mounting column is clamped on the door sheet metal through the limiting protrusion and the outer card cover.

[0019] Among them, a connecting clip is provided on the door sheet metal, and the upper and lower ends of the connecting clip are in contact with the two limiting protrusions through the gap and are clamped between the two limiting protrusions and the outer clamp cover body, and a clamping limiting hole is provided on the door sheet metal, and the mounting column is clamped in the clamping limiting hole of the door sheet metal through an elastic limiting protrusion.

[0020] Compared with the prior art, the vehicle door glass thawing device of the present invention has the following beneficial effects:

[0021] In winter, the door glass of vehicles is prone to frost. In rainy and snowy weather, the door glass is prone to freezing, which makes the four door windows unable to rise and fall, and affects the driver's field of vision and driving safety. Adding a PTC heating wire on the inside of the door glass can quickly thaw the ice and snow, so that the door glass can resume its lifting function, and it is convenient to wipe the melted frost by hand, ensuring the driver's normal field of vision while driving. Moreover, the door glass thawing device of the present invention does not need to rely on a position sensor (confirming whether the window glass is at the top of the door and window by measuring the on and off of the circuit), and a detachable conductive device is designed at the bottom of the front of the glass. The conductive device is designed into three component parts, so that it can be assembled in a narrow space between the bottom of the front of the glass and the door sheet metal, and when in use, the door glass heating can be realized by pressing the door glass PTC heating switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the vehicle door glass thawing device of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the circled part.

[0024] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the glass side fixing bracket assembly.

[0025] Figure 4-1 for Figure 2 First view of the enlarged structure of the glass-side conductive component in.

[0026] Figure 4-2 for Figure 2 A second view of the enlarged structure of the glass-side conductive component in FIG.

[0027] Figure 5 for Figure 4-1 Schematic diagram of the cross-sectional structure along the AA direction.

[0028] Figure 6 for Figure 2 Schematic diagram of the disassembled structure of the glass-side conductive components.

[0029] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the circled portion of the glass-side conductive component.

[0030] Figure 8-1 for Figure 2 A first view of the enlarged structure of the door-side conductive component.

[0031] Figure 8-2 for Figure 2 A first view of the enlarged structure of the door-side conductive component.

[0032] Fig. 9 for Figure 8-1 Schematic diagram of the structure of the conductive terminal in the conductive component on the door side.

[0033] Fig.10 It is a schematic diagram of the structure of the door glass thawing device when the door glass is in the highest position.

[0034] Fig.11 It is a schematic diagram of the structure of the door glass thawing device when the door glass is in the lowest position.

[0035] Fig.12 The figure is a schematic diagram of the assembly of the vehicle door glass thawing device of the present invention (I).

[0036] Fig.13 This is a schematic diagram of the assembly of the vehicle door glass thawing device of the present invention (II).

[0037] Fig.14 The present invention is a circuit implementation principle diagram of the vehicle door glass thawing device of the present invention.

[0038] Fig.15 This is a diagram of incorrect assembly of the door glass defrosting device. DETAILED DESCRIPTION

[0039] The door glass thawing device of the present invention will be further described below in conjunction with specific embodiments to help those skilled in the art to have a more complete, accurate and in-depth understanding of the technical solution of the present invention.

[0040] Example 1

[0041] In order to defrost frozen door and window glass, remove ice and snow and / or defrost, this embodiment provides a door glass defrosting device. The door glass defrosting device of this embodiment uses PTC heating to thaw the ice and snow on the door glass, so that the glass can quickly resume normal lifting and lowering functions. Fig.14As shown, the door glass thawing device includes a PTC heating wire 20, a conductive device 10, a PTC relay 60, a vehicle battery 70, a vehicle controller (ECU) 80 and a PTC heating wire switch 90 arranged at the edge of the door glass. When the door glass is at the highest position, the PTC heating wire 20 is connected to one end of the conductive device 10, and the other end of the conductive device 10 is connected to the PTC relay 60 through the door wiring harness, and the vehicle controller 80 and the vehicle battery 70 are respectively connected to the PTC relay 60, the PTC heating wire switch 90 is connected to the vehicle controller (ECU 80), the PTC relay 60 and the conductive device 10 are also grounded through wires, and the PTC relay 60 is connected to the negative electrode of the battery through the battery grounding wire. The circuit implementation principle of the door glass thawing device is as follows:

[0042] 1. The PTC heating wire switch 90 is set on the air conditioning panel or the electric door and window panel;

[0043] 2. After receiving the ON signal from the PTC heating wire switch 90, the ECU 80 controls the PTC relay 60 to turn on the conductive device 10 so as to provide electrical energy to the PTC heating wire 20;

[0044] 3. The PTC heating wire 20 works, so that the switch on the air conditioner panel or the switch working indicator light on the electric door and window panel lights up (it is sufficient to add an indicator light to the circuit structure);

[0045] 4. After the PTC heating wire 20 continues to work for a period of time, the ECU 80 automatically cuts off the power supply (the heating time can be pre-set by the ECU 80), the glass heating work ends, and the working indicator light goes out.

[0046] In the vehicle door glass defrosting device of this embodiment, only when the vehicle window glass rises to the highest position, the electric energy can be connected to the glass PTC heating wire through the conductive device. When the vehicle window glass PTC heating start indicator light is on, the vehicle window glass cannot be lifted temporarily. If the vehicle window glass PTC heating switch is manually turned off (the working indicator light is off), the electric glass lifting function is restored.

[0047] like Figure 1 As shown, in the vehicle door glass thawing device of this embodiment, the PTC heating wire 20 is arranged at the outer edge of the vehicle door glass 11. Specifically, the PTC heating wire 20 can be extended along the top edge and two side edges of the vehicle door glass, and two heating wire terminals 21 are arranged on one side of the bottom of the vehicle door glass (see Figure 3This arrangement not only does not affect the appearance of the door glass, but also, because the PTC heating wire 20 is mainly arranged in the area near the door window, it is more conducive to thawing the door glass and the area near the door window, thereby shortening the thawing time. A conductive device 10 is arranged below the two heating wire terminals 21.

[0048] like Figure 2 As shown, the conductive device 10 used in the vehicle door glass thawing device of this embodiment includes a glass side fixing bracket assembly 30 , a glass side conductive assembly 40 and a vehicle door side conductive assembly 50 .

[0049] like Figure 3 As shown, the glass side fixing bracket assembly 30 is arranged on one side of the lower end of the door glass 11, and includes a glass pressing rubber 31, a glass pressing sheet metal 32, a connecting sheet metal 33 and a fixing bracket 34. The glass pressing rubber 31 is arranged on both sides of the glass at the lower end of the door glass 11 and is pressed on both sides of the glass at the lower end of the door glass 11 by the glass pressing sheet metal 32, and the connecting sheet metal 33 is fixed on the outer side of the glass pressing sheet metal 32, for example, the connecting sheet metal 33 can be fixed on the outer side of the glass pressing sheet metal 32 by welding or other processes, or the connecting sheet metal 33 and the glass pressing sheet metal 32 are an integral structure or are processed as one piece. The fixing bracket 34 is fixed on the inner side of the connecting sheet metal 33, and the upper and lower ends of the fixing bracket 34 are bent to form a snap-on flange 341, and the fixing bracket 34 is provided with a snap-on limiting hole 342.

[0050] like Figure 4-1 , 4-2 , as shown in Figures 5-7, the glass-side conductive assembly 40 includes a base body 45, an upper cover 41, a conductor 42, an insulating guide slider 43, a spring 44, a wire 46 and a connector 47. A connection structure 451 that cooperates with the fixing bracket 34 is provided at the upper and lower ends of one side of the base body 45, and two connection columns 452 are provided on the upper surface of the base body 45, and a center hole 453 connected to the lower surface of the base body 45 is provided in the connection column 452, and a wiring hole 454 capable of accommodating the wire 46 is also provided on the base body 45. The connection structure 451 includes a limiting protrusion 457 and an outer card cover 456, and the outer card cover 456 covers the protrusion 457, and a gap 458 is formed between the side of the outer card cover 456 opposite to the two limiting protrusions 457 and the side wall of the connection structure 451, and an elastic limiting protrusion 455 is provided on the side wall of the connection structure 451.

[0051] The insulating guide slider 43 includes a column 48 with a central axial hole, and a plurality of protrusions 49 are arranged on the middle periphery of the column 48 to cooperate with the grooves on the inner wall of the central hole 453. The end of the conductor 42 is connected to the wire 46 (for example, welded), and the conductor 42 and the wire 46 pass through the central axial hole of the insulating guide slider 43 and the conductor 42 is screwed and fixed to the central axial hole, and the upper end of the conductor 42 is located on the column 48 of the insulating guide slider 43. The spring 44 is inserted under the wire 46 and the column of the insulating guide slider 43 and the upper end of the spring 44 abuts against the lower end of the protrusion 49, and then the spring 44 and the insulating guide slider 43 equipped with the conductor 42 are assembled into the central hole 453 of the connecting column 452, and the wire 46 passes through the lower end of the central hole 453. The upper cover 41 is screwed and fixed to the connecting column 452, and the upper section of the column 48 of the insulating guide slider 43 extends from the through hole in the middle of the upper cover 41 and is located above the upper cover 41, and the wire 46 passes through the wiring hole 454 from the lower end and extends from the upper end of the wiring hole 454, and the end of the wire 46 is connected to a connector 47 arranged opposite to the heating wire terminal 21, and the connector is connected to the heating wire terminal 21. The sheet metal flange 341 of the fixing bracket 34 is clamped between the limiting protrusions 457 of the connecting structure 451, and the sheet metal flange 341 is embedded in the gap 458 between the outer clamping cover 456 and the side wall of the connecting structure 451, and the elastic limiting protrusion 455 is clamped in the clamping limiting hole 342 on the fixing bracket 34.

[0052] like Figure 8-1 , 8-29-10, the door-side conductive component 50 includes a mounting column 52, a harness interface 53 and two conductive terminals 51, the harness interface 53 is arranged on the mounting column 52, and the upper and lower ends of the inner side of the mounting column 52 are provided with a limit protrusion 54 and an outer card cover 58, and the middle part of the inner side of the mounting column 52 is provided with an elastic limit protrusion 501, and the outer card cover 58 covers the limit protrusion 54, and the outer card cover 58 forms a gap 59 between the side opposite to the two limit protrusions 54 and the inner side of the mounting column 52. The front end of the harness interface 53 is a front opening 55, and the lower end of the harness interface 53 is a lower opening 56, and a grid plate 57 is arranged on the lower opening 56, and the grid plate 57 divides the lower opening 56 into two parts, the inner and outer parts. The two conductive terminals 51 are installed in the harness interface 53 from the front opening 55, and the lower ends of the two conductive terminals 51 have conductive contact plates 512, and the upper ends of the two conductive terminals are provided with conductive upper panels 511, and the conductive contact plates 512 of the two conductive terminals 51 are respectively provided in the inner and outer parts of the lower opening 56, and the conductive upper panel 511 is located near the front opening 55. The mounting column 52 is clamped on the door sheet metal 12 through the limiting protrusion 54 and the outer clamp cover 58. Specifically, the door sheet metal 12 is provided with a clamping limiting hole 13, and the clamping limiting hole 13 is clamped and limited with the elastic limiting protrusion 501.

[0053] In this embodiment, the conductive upper panel 511 of the two conductive terminals 51 of the door-side conductive component 50 is electrically connected to the door wiring harness (not shown in the figure). Fig.10 As shown, when the door glass 11 is raised to the highest position, the connector 47 can be connected to the heating wire terminal 21. The end of the conductor 42 is in contact with the conductive touch plate 512 of the two conductive terminals 51 of the door-side conductive component 50. When the PTC heating switch 90 is pressed, an ON signal is generated and sent to the ECU 80, and the ECU 80 controls the PTC relay 60 to be connected, so that the PTC heating wire 20 is powered by the on-board battery 70 through the conductive terminal 51 of the door-side conductive component 50 of the conductive device 10, the conductor 42 of the glass-side conductive component 40, the wire 46, the connector 47 and the heating wire terminal 21, so that heating can be performed. By setting the heating time by the ECU, the continuous power supply and heating time of the PTC heating wire 20 can be controlled. In this embodiment, the PTC heating wire 20 can be arranged on the periphery of the door glass 11, thereby improving the heating and thawing effect between the door glass and the window and shortening the heating time. Fig.11As shown, when the door glass 11 is in the lowered position, the glass-side conductive component 40 is separated from the door-side conductive component 50 (i.e., the conductor 42 is not in contact with the conductive terminal 51). At this time, even if the PTC heating wire switch 90 is pressed, the PCT heating wire 10 will not be started for heating, thereby preventing accidental heating. It can be seen that the door glass thawing device of this embodiment can only start the heating process when the door glass 11 is in the highest position.

[0054] The installation sequence of the door glass thawing device of this embodiment is as follows: Figure 12-13 As shown, it includes the following steps:

[0055] 1. Clamp the door-side conductive component 50 onto the door sheet metal 12;

[0056] 2. Connect the glass side fixing bracket assembly 30 to the door and window glass 11 by interference fit (processed and assembled at the glass manufacturer);

[0057] 3. Install the glass-side conductive assembly 40 on the glass-side fixed bracket assembly 30 by clipping (performed in the final assembly workshop).

[0058] In this embodiment, by designing the conductive device on the door side into two parts, namely, the glass side fixing bracket assembly 30 and the glass side conductive assembly 40, the conductive device can be successfully designed and assembled in the narrow installation space between the door sheet metal and the door glass on the window side. In this embodiment, the installation of the conductive device 10 needs to be carried out in the final assembly workshop. If the conductive device is designed into two parts, namely, the door conductive assembly and the glass side conductive assembly, according to conventional design ideas, such as Fig.15 As shown, the glass cannot be placed in the door slot.

[0059] In this embodiment, the design of the glass-side conductive component 40 can effectively ensure effective contact with the door-side conductive component 50, and a reliable elastic telescopic contact structure is designed through the installation structure of the base body 45, the upper cover 41, the conductor 42, the insulating guide slider 43 and the spring 44, which can ensure that the reliability of the conductive structure is effectively maintained during the frequent lifting and lowering of the door glass. During the lifting and lowering of the door glass, the conductor 42 and the door-side conductive component 50 can ensure reliable contact, and the expansion and contraction of the spring can also ensure that the surface of the contacting parts of the two will not be damaged or impacted, thereby ensuring the reliability and durability of the conductive device.

[0060] For ordinary technicians in this field, the specific embodiments are only illustrative descriptions of the present invention. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A door glass thawing device, characterized in that: It comprises a PTC heating wire, a conductive device, a PTC relay, an on-board battery, an ECU and a PTC heating wire switch; the ECU and the on-board battery are respectively connected to the PTC relay, and the PTC heating wire switch is connected to the ECU; the PTC heating wire is arranged at the outer edge of the door glass, and the two ends of the PTC heating wire are arranged on one side of the bottom of the door glass and are provided with heating wire terminals connected to the ends; The conductive device comprises a glass side fixing bracket assembly, a glass side conductive assembly and a door side conductive assembly; The glass side fixing bracket assembly is arranged on one side of the lower end of the door glass; The glass-side conductive component is clamped on the glass-side fixed bracket component, and a connector and a conductor are provided on the glass-side conductive component, and the connector is connected to the heating wire terminal; The door-side conductive component is installed on the door sheet metal opposite to the door glass, and the door-side conductive component is connected to the PTC relay via a door wiring harness, and the conductors of the door-side conductive component and the glass-side conductive component are arranged opposite to each other; When the door glass is at the highest position, the conductor is in contact with the door-side conductive component; when the door glass leaves the highest position, the conductor is separated from the door-side conductive component; The glass-side conductive assembly includes a base body, an upper cover, a conductor, an insulating guide slider, a spring and a wire; a connection structure that cooperates with the fixed bracket is provided on one side of the base body, and two connecting columns are provided on the upper surface of the base body, and a center hole connected to the lower surface of the base body is provided in the connecting column, and a wiring hole capable of accommodating the wire passing through is also provided on the base body; the insulating guide slider includes a column with a central axis hole, and a plurality of protrusions that cooperate with the grooves on the inner wall of the central hole are provided on the middle periphery of the column; the The end of the conductor is connected to the wire, and the conductor and the wire pass through the central axis hole of the insulating guide slider and the conductor is screwed and fixed to the central axis hole, and the upper end of the conductor is located on the column of the insulating guide slider; the spring passes under the wire and the column of the insulating guide slider and the upper end of the spring abuts against the lower end of the protrusion, and then the spring and the insulating guide slider equipped with the conductor are assembled into the central hole of the connecting column, and the wire passes through the lower end of the central hole; the upper cover is screwed and fixed to the connecting column.

2. The door glass thawing device according to claim 1, characterized in that: The two ends of the PTC heating wire are arranged to extend downward along the top edge and two side edges of the door glass.

3. The door glass thawing device according to claim 1, characterized in that: The PTC relay and the conductive device are grounded respectively through wires, and the PTC relay is connected to the negative electrode of the battery through the battery grounding wire.

4. The door glass thawing device according to claim 1, characterized in that: The glass side fixing bracket includes a glass pressing rubber, a glass pressing sheet metal, a connecting sheet metal and a fixing bracket. The glass pressing rubber is arranged on both sides of the glass at the lower end of the door glass and is pressed on both sides of the glass at the lower end of the door glass by the glass pressing sheet metal. The connecting sheet metal is fixed on the outer side of the glass pressing sheet metal, and the fixing bracket is fixed on the inner side surface of the connecting sheet metal. The upper and lower ends of the fixing bracket are bent to form a snap-fit ​​flange, and the fixing bracket is provided with a snap-fit ​​limiting hole.

5. The door glass thawing device according to claim 1, characterized in that: The upper section of the column of the insulating guide slider extends out from the through hole in the middle of the upper cover and is located above the upper cover, and the wire passes through the wiring hole from the lower end and extends out from the upper end of the wiring hole, and the end of the wire is connected to a connector arranged opposite to the heating wire terminal, and the connector is connected to the heating wire terminal.

6. The door glass thawing device according to claim 5, characterized in that: The connecting structure includes a limiting protrusion and an outer card cover, the outer card cover covers the limiting protrusion, and a gap is formed between the side opposite to the two limiting protrusions and the side wall of the connecting structure, and an elastic limiting protrusion is arranged on the side wall of the connecting structure; the sheet metal flange of the fixed bracket is clamped between the limiting protrusions of the connecting structure, the sheet metal flange is embedded in the gap between the outer card cover and the side wall of the connecting structure, and the elastic limiting protrusion is clamped in the clamping limiting hole on the fixed bracket.

7. The door glass thawing device according to claim 1, characterized in that: The conductive component on the vehicle door side includes a mounting column, a wiring harness interface and two conductive terminals, the wiring harness interface is arranged on the mounting column, and limiting protrusions and an outer card cover are arranged at the upper and lower ends of the inner side of the mounting column, and an elastic limiting protrusion is arranged in the middle part of the inner side of the mounting column, the outer card cover covers the limiting protrusion, and a gap is formed between the inner side of the mounting column and the outer card cover on the opposite side of the two limiting protrusions; the front end of the wiring harness interface is a front opening, and the lower end of the wiring harness interface is a lower opening, and a grid plate is arranged on the lower opening, and the grid plate divides the lower opening into two parts, an inner part and an outer part; the two conductive terminals are installed in the wiring harness interface from the front opening.

8. The door glass thawing device according to claim 7, characterized in that: The lower ends of the two conductive terminals have a conductive touch plate, and the upper ends are provided with a conductive upper panel, and the conductive touch plates are respectively arranged in the inner and outer parts of the lower opening, and the conductive upper panel is located near the front opening; the mounting column is clamped on the door sheet metal through the limiting protrusion and the outer card cover.

9. The door glass thawing device according to claim 8, characterized in that: A connecting clip is provided on the door sheet metal, and the upper and lower ends of the connecting clip are in contact with the two limiting protrusions through the gap and are clamped between the two limiting protrusions and the outer clamp cover body, and a clamping limiting hole is provided on the door sheet metal, and the mounting column is clamped in the clamping limiting hole of the door sheet metal through an elastic limiting protrusion.

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