A vehicle-mounted heating foot mat connector assembly integrating foot mat fixing and conductive functions

Abstract

The application provides a vehicle-mounted heating foot pad connector assembly integrating foot pad fixing and conductive functions, which comprises a lower connector base fixed to a vehicle body floor and an upper connector plug fixed to a heating foot pad; the lower connector base and the upper connector plug are locked through locking and matching structures to mechanically fix the heating foot pad relative to the vehicle body floor and electrically connect female conductive terminals in the lower connector base with male conductive terminals in the upper connector plug; the male conductive terminals comprise long needle terminals and short needle terminals, and the length of the short needle terminals is less than that of the long needle terminals, so that the short needle terminals are disconnected before the long needle terminals when the lower connector base and the upper connector plug are separated. The application integrates the mechanical fixing and electrical connection of the foot pad in the same connector assembly, so that the user can simultaneously complete the locking and fixing of the foot pad and the on-off of the circuit through a single plug-in and pull-out operation, and does not need to separately operate independent fixing buckles and power plugs, thereby simplifying the foot pad mounting and dismounting operation process; through the arrangement of the long and short male conductive terminals, the short terminals can be separated before the long terminals to realize the arc-free safe separation during the live unlocking.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a vehicle-mounted heated floor mat connector assembly that integrates floor mat fixing and conductive functions. Background Technology

[0002] Heated car floor mats, as an interior component that enhances driving comfort in winter, have been widely used in the field of new energy vehicles in recent years. Existing heated car floor mats typically consist of the mat body, a heating element built into the mat, and an electrical connection structure for supplying power to the heating element. During vehicle assembly, the heated floor mat needs to be reliably positioned on the vehicle floor using a fixing device to prevent displacement during vehicle operation and interference with pedal operation; simultaneously, an electrical connector is required to bring vehicle power to the heating element inside the floor mat.

[0003] Currently, the existing car heated floor mat technology has the following pain points:

[0004] 1. The power supply is separated from the fixed structure, resulting in a poor user experience.

[0005] Existing car heated floor mats use two separate structures: an independent wiring harness plug for power supply and original car plastic clips to secure the floor mats. When cleaning the floor mats, users must first manually unplug the power connector and then unlock the floor mat clips, which is cumbersome. If the plug is forgotten and the floor mat is dragged directly, the wiring harness can easily be pulled or torn, causing open circuits or short circuits.

[0006] 2. Cannot support live disassembly, posing a safety hazard.

[0007] Some users forcibly drag the floor mats while they are powered on. Conventional connectors do not have a graded power-off interlocking structure. When the male and female terminals are separated, a high-voltage arc is generated, which can easily burn the terminals, cause electrical faults in the vehicle, and in severe cases, pose a fire risk.

[0008] 3. Insufficient protective performance; prone to failure in harsh environments.

[0009] Vehicles are used in environments exposed to de-icing salt, mud, sand, and splashes from car washes. Additionally, floor mats and floor connectors are subjected to constant foot traffic and wiping forces. Traditional split connectors lack a waterproof structure for different operating conditions; when plugged in, they rely solely on a single sealing ring for sealing. After disassembly, the plug is exposed, allowing moisture and corrosive salt spray to directly erode the metal terminals, leading to problems such as terminal oxidation, increased contact resistance, and reduced heating power.

[0010] 4. Numerous openings in the vehicle body result in high overall vehicle integration costs.

[0011] Traditional solutions require separate installation holes for floor mat clips and wiring harness connectors, which damages the anti-corrosion layer of the vehicle's floor sheet metal and increases stamping, sealing, and assembly processes, thus raising the overall vehicle production cost.

[0012] 5. Limited signal transmission and poor scalability.

[0013] Conventional connectors can only transmit the heating power supply circuit and cannot simultaneously collect the signal from the temperature sensor built into the floor mat. As a result, the vehicle controller cannot monitor the floor mat temperature in real time, making it difficult to achieve constant temperature control and overheat protection functions.

[0014] Chinese utility model patent CN205553996U discloses a device for detachably fixing a foot pad with an electric heating element to a vehicle floor or floor covering. The device employs a button principle design, consisting of an anchoring element and a button element forming a fixing element. The anchoring element is fixed to the floor or floor covering, and the button element is fixed to the foot pad and locked to the anchoring element. This fixing element is also designed to transmit current to the electric heating element. The anchoring element and the button element are provided with corresponding electrical contacts for closing and opening the circuit associated with the electric heating element. Specifically, the electrical contact of the anchoring element is composed of a magnetic switch contact, having a first fixed contact element and a second contact element. The second contact element is movable relative to the first fixed contact element to close or open the electrical connection between them.

[0015] However, the above-mentioned utility model patent still has the following shortcomings: 1. No live plugging and unplugging safety interlock - its magnetic switch contact and power supply contact separate synchronously, and a high voltage arc may still be generated at the moment the power supply circuit is disconnected, especially in the 48V vehicle scenario, there is a risk of terminal burning and fire; 2. No dual-condition waterproof structure - there is no sealing design when plugging in, and no protective cover after disassembly, which cannot cope with harsh environments such as vehicle mud and water, snow melting salt, etc. Summary of the Invention

[0016] To address the aforementioned technical problems, this invention proposes a vehicle-mounted heated floor mat connector assembly that integrates floor mat fixing and conductive functions. This assembly solves the problem in the prior art where the switch contacts and power supply contacts separate simultaneously, and a high-voltage arc may still be generated at the moment the power supply circuit is disconnected, posing a risk of terminal burn-out and fire.

[0017] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0018] A vehicle-mounted heated floor mat connector assembly integrating floor mat fixing and electrical conductivity functions includes a lower connector base fixed to the vehicle floor and an upper connector plug fixed to the heated floor mat. The lower connector base and the upper connector plug are locked together by a locking mechanism, ensuring mechanical fixing of the heated floor mat relative to the vehicle floor and electrical connection between the female conductive terminal in the lower connector base and the male conductive terminal in the upper connector plug. The male conductive terminal includes a long pin terminal and a short pin terminal, with the short pin terminal being shorter than the long pin terminal, so that when the lower connector base is separated from the upper connector plug, the short pin terminal disengages before the long pin terminal. This invention integrates the mechanical fixing and electrical connection of the floor mat into the same connector assembly. Users can simultaneously complete the locking and fixing of the floor mat and the circuit switching with a single plugging and unplugging action, eliminating the need to operate separate fixing clips and power plugs, thus simplifying the installation and removal process of the floor mat. By setting long and short male conductive terminals, the short terminal can separate before the long terminal, achieving arc-free safe separation during energized unlocking.

[0019] Furthermore, in order to improve the alignment accuracy during the insertion process, the lower connector base includes a base sleeve and an island platform disposed within the base sleeve, with the female conductive terminal disposed on the island platform; the upper connector plug includes a plug sleeve and an inner sleeve disposed within the plug sleeve, with a cavity formed within the plug sleeve for the base sleeve to be inserted, and the male conductive terminal disposed within the inner sleeve; during insertion, the inner sleeve is fitted over the outside of the island platform.

[0020] Furthermore, in order to achieve automatic locking after insertion and automatic unlocking during lifting, the locking mechanism includes a spring-loaded latch and an annular mounting platform; the spring-loaded latch is located on the outside of the base sleeve of the lower connector base; the annular mounting platform is located at the lower port of the insertion cavity; the spring-loaded latch and the annular mounting platform are locked together.

[0021] Furthermore, in order to prevent the upper connector plug from being inserted at the wrong angle, which would cause the terminals to be misconnected and short-circuited, the outer side of the base sleeve is provided with an annular anti-misconnection rib, and the inner wall of the plug sleeve is provided with an anti-misconnection groove. The annular anti-misconnection rib and the anti-misconnection groove are uniquely matched.

[0022] Furthermore, in order to achieve a reliable electrical connection between the internal circuit board of the connector and the heating element and temperature sensor inside the foot pad, a PCB board is provided on the top of the plug sheath. The PCB board is sealed and fixed with sealant. One end of the PCB board is electrically connected to the male conductive terminal, and the other end is connected to an FPC flexible board. The FPC flexible board is embedded inside the heating foot pad and is electrically connected to the heating film and the temperature sensor respectively.

[0023] Furthermore, in order to protect the soldering area between the PCB board and the FPC flexible board from damage by external mechanical forces, a hard protective cover is provided on the outside of the plug sheath, which covers the connection area between the PCB board and the FPC flexible board.

[0024] Furthermore, in order to achieve continuous waterproof protection for the conductive terminals in both plugging and disassembling states, a flip-up rubber waterproof cover is hinged to one side of the bottom of the plug sheath; the vehicle floor is provided with a storage groove to accommodate the rubber waterproof cover when the upper connector plug and the lower connector base are plugged in; after the upper connector plug and the lower connector base are separated, the rubber waterproof cover snaps together and covers the terminal surface of the upper connector plug.

[0025] Furthermore, in order to improve the sealing reliability after the rubber waterproof cover is fastened, a sealing lip is provided on the inner side of the rubber waterproof cover, which is used to seal with the inner sheath when the rubber waterproof cover is fastened.

[0026] Furthermore, in order to promptly drain any water that accidentally seeps into the base, a through-type water guide groove is provided on the base sleeve; at the same time, in order to prevent mud and water from entering the terminal area from the insertion gap when the device is plugged in, an insulating silicone sealing layer is provided on the island platform to seal the mating surface when the device is plugged in.

[0027] Furthermore, in order to form multiple independent electrical circuits so that the same connector can simultaneously carry multiple functions such as power supply and signal transmission, without having to set up separate connector interfaces for different functions, the female and male conductive terminals are provided with six pins to form three independent electrical circuits. The three independent electrical circuits include a high-voltage power supply circuit, a hot-plug interlock circuit, and a temperature sensor signal acquisition circuit. The high-voltage power supply circuit and the temperature sensor signal acquisition circuit are configured with long pin terminals, while the hot-plug interlock circuit is configured with short pin terminals.

[0028] The beneficial effects of this invention are:

[0029] 1. This invention utilizes a locking mechanism between the lower connector base and the upper connector plug to simultaneously complete the mechanical fixing of the foot pad and the electrical connection of the conductive terminals in a locked state. This integrates the originally separate functions of fixing and power supply into a single connector assembly, reducing the number of openings in the vehicle floor and simplifying the assembly process.

[0030] 2. This invention sets multiple conductive terminals to form at least two independent electrical circuits, enabling the same connector assembly to simultaneously carry multiple functions such as power supply and signal transmission without the need for separate connectors for different functions. Furthermore, the long and short pin arrangement, using long pin terminals for high-voltage power supply circuits and temperature acquisition circuits and short pin terminals for interlocking circuits, ensures that the short pin interlocking terminals detach before the long pin power supply terminals during disassembly. This allows the vehicle controller to cut off the high-voltage power supply before the power supply terminals are disconnected, avoiding arcing caused by the separation of the power supply terminals under load and eliminating the risk of terminal burning and fire.

[0031] 3. The present invention, through the double-layer structure of the base sleeve and the island platform, and the double-layer structure of the plug sleeve and the inner sleeve, forms an inner and outer double nested cooperation during the insertion process, realizing coarse guidance and fine guidance during the insertion process, and ensuring accurate insertion of the male and female conductive terminals.

[0032] 4. The present invention uses the elastic hook tongue and the buckle of the ring hanging platform to cooperate. When assembling, the plug sheath is pressed down to the predetermined position to automatically lock. When disassembling, it is automatically unlocked by pulling it up. The fixing and unlocking operations do not require the use of tools.

[0033] 5. This invention, through the unique matching of the annular anti-misalignment rib and the anti-misalignment groove, ensures that the lower connector base can only be inserted when the upper connector plug is at the correct angle, thus preventing terminal misalignment and short circuit faults caused by reverse insertion.

[0034] 6. This invention forms a sealed connection between the PCB board and the male conductive terminal by setting a PCB board on the top of the plug sheath and sealing it with sealant, thus preventing moisture from entering the PCB board area along the terminal; at the same time, the FPC flexible board is led out from the top of the plug sheath and embedded inside the foot pad, so that the connector and the heating film and temperature sensor inside the foot pad can achieve a neat electrical connection.

[0035] 7. The present invention provides a hard protective cover on the outside of the plug sheath, which covers the connection area between the PCB board and the FPC flexible board, thereby dispersing and bearing the stepping pressure and cleaning wiping force from the surface of the foot pad, and avoiding mechanical damage to the internal solder joints and the PCB board.

[0036] 8. This invention achieves continuous protection of conductive terminals under both plug insertion and disassembly conditions by hinged rubber waterproof cover on one side of the bottom of the plug sheath and setting a corresponding storage groove on the vehicle floor. When plugged in, the rubber waterproof cover is stored in the floor groove without affecting the fit of the floor mat. After disassembly, it automatically snaps together to cover the terminal surface.

[0037] 9. The present invention provides a sealing lip on the inside of the rubber waterproof cover, which forms a sealed fit with the inner sheath when fastened, preventing external moisture, mud and de-icing salt from entering the terminal area, thus avoiding terminal oxidation and increased contact resistance.

[0038] 10. This invention utilizes a through-type water guide groove on the base sleeve to allow water that accidentally seeps into the base to drain promptly, preventing water from stagnating and soaking the female conductive terminals. Furthermore, by installing an insulating silicone sealing layer on the island platform, the lower end face of the inner sleeve presses against the sealing layer during insertion, forming a sealed mating surface and preventing mud and water from entering the terminal area through the insertion gap. The water guide groove and the sealing layer work together to provide dual protection combining drainage and sealing.

[0039] 11. This invention divides the six conductive terminals into three groups: a high-voltage power supply circuit, a live plug-in interlock circuit, and a temperature sensor signal acquisition circuit. This enables the parallel transmission of power supply, safety interlock, and temperature monitoring functions within the same connector. The vehicle controller can acquire the floor mat temperature in real time, providing a signal basis for constant temperature control and overheat protection. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a cross-sectional schematic diagram of the mating structure of the lower connector base and the upper connector plug of the present invention.

[0042] Figure 2 This is a schematic diagram of the structure of the lower connector base of the present invention.

[0043] Figure 3 This is a cross-sectional view of the lower connector base of the present invention.

[0044] Figure 4 This is a schematic diagram of the upper connector plug of the present invention.

[0045] Figure 5 This is a cross-sectional view of the upper connector plug of the present invention.

[0046] Figure 6 This is a schematic diagram of the bottom structure of the upper connector plug of the present invention.

[0047] Figure 7 This is a schematic diagram of the storage groove of the present invention.

[0048] Figure 8 This is a schematic diagram of the structure of the present invention, showing the mating of the lower connector base and the upper connector plug, and the housing of the rubber waterproof cover. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] like Figure 1As shown in Embodiment 1 of the present invention, a vehicle-mounted heated floor mat connector assembly integrating floor mat fixing and conductive functions includes a lower connector base 1 fixed to the vehicle floor 5 and an upper connector plug 2 fixed to the heated floor mat 4. The lower connector base 1 and the upper connector plug 2 are locked together by a locking engagement structure. In the locked state, the heated floor mat 4 is mechanically fixed relative to the vehicle floor 5, and simultaneously, the female conductive terminal 1-2 in the lower connector base 1 and the male conductive terminal 2-3 in the upper connector plug 2 are electrically connected. Multiple male conductive terminals 2-3 and female conductive terminals 1-2 are provided, forming at least two independent electrical circuits. The high-voltage power supply circuit uses long pin terminals, while the hot-plug interlock circuit uses short pin terminals. The short pin terminals are shorter than the long pin terminals. When the upper connector plug 2 is fully inserted into the lower connector base 1 and locked, both the long pin terminals and the short pin terminals are in contact with the female conductive terminal 1-2 and conduct electricity.

[0051] When disconnected, as the upper connector plug 2 moves upward, the short pin terminal first disengages from the female conductive terminal 1-2, cutting off the interlock circuit. Upon detecting the interlock circuit disconnection signal, the vehicle controller cuts off the power supply to the high-voltage power supply circuit. As the upper connector plug 2 continues to move upward, the long pin terminal disengages from the female conductive terminal 1-2. This short terminal's ability to separate before the long terminal ensures arc-free, safe separation during energized unlocking.

[0052] In this embodiment, the lower connector base 1 and the upper connector plug 2 are plugged into each other. During assembly, the heated foot pad 4, along with the upper connector plug 2 fixed thereon, is aligned with the lower connector base 1 fixed on the vehicle floor 5 and pressed down. The upper connector plug 2 is fitted onto the outside of the lower connector base 1 and moves downward, automatically locking the locking mechanism. At this time, the foot pad is fixed to the floor, and all conductive terminals are connected accordingly. The vehicle's power supply is introduced into the heating element inside the foot pad through the conductive terminals. During disassembly, the heated foot pad 4 is pulled upward, the locking mechanism is unlocked, the upper connector plug 2 separates from the lower connector base 1, the mechanical fixation is released, and the conductive terminals are simultaneously disconnected.

[0053] Example 2, as Figure 2 and Figure 3 As shown, based on Embodiment 1, the lower connector base 1 includes a base sleeve and an island platform disposed within the base sleeve. The base sleeve is cylindrical, and the island platform is located in the center inside the base sleeve. The base sleeve and the island platform are connected as one unit via a bottom connection, and the entire unit is injection molded from engineering plastic. The island platform protrudes upward from the center of the bottom wall of the base sleeve. Female conductive terminals 1-2 are embedded in the island platform, forming several terminal sockets on the island platform. The lower ends of the female conductive terminals 1-2 protrude from the bottom wall of the base sleeve and connect to the vehicle wiring harness.

[0054] like Figure 4 and Figure 5As shown, the upper connector plug 2 includes a plug sheath and an inner sheath disposed within the plug sheath. The plug sheath is a cylindrical shell with an open lower end, and its inner cavity forms a socket for the lower connector base 1 to be inserted into, with the lower opening serving as the insertion port of the socket. The inner sheath is disposed inside the socket, coaxially arranged with the plug sheath, with its upper end closed at the top wall of the plug sheath and its lower end open. The male conductive terminals 2-3 are disposed within the internal space of the inner sheath and extend downwards.

[0055] During insertion, the island platform of the lower connector base 1 is inserted into the inner sleeve of the upper connector plug 2 from bottom to top, with the inner sleeve covering the outside of the island platform; the plug sleeve of the upper connector plug 2 is covered from the outside of the base sleeve of the lower connector base 1. The upper edge of the island platform has a guide chamfer, and the inner wall of the lower port of the plug sleeve has a corresponding guide slope. In this embodiment, a protective plate is provided at the bottom of the plug sleeve. An opening is provided on the protective plate corresponding to the insertion port. The guide slope is located at the edge of the opening.

[0056] As a parallel option, the cross-sectional shape of the island platform can also be set to rectangular or elliptical, and the shape of the inner sheath can be adapted to the shape of the island platform.

[0057] Example 3, based on Example 1, such as Figure 3 and Figure 5 As shown, the locking mechanism includes a spring-loaded latch 1-1 and an annular mounting platform 2-1. The spring-loaded latch 1-1 is located on the outside of the base sleeve of the lower connector base 1, and is separated from the base sleeve by a U-shaped groove. That is, the upper root of the spring-loaded latch 1-1 is integrally connected to the base sleeve, and the lower end is a free end with an outwardly protruding hook. The annular mounting platform 2-1 is located at the lower port of the insertion cavity of the upper connector plug 2. In this embodiment, the annular mounting platform 2-1 is a flange that extends inward beyond the inner wall of the plug sleeve from the edge of the opening of the bottom protective plate of the plug sleeve.

[0058] During assembly, the plug sleeve of the upper connector plug 2 is fitted onto the outside of the base sleeve and moves downwards. The inner wall of the lower port of the plug sleeve contacts the hook of the elastic latch 1-1. The hook is compressed, causing the latch to elastically contract towards the center of the base sleeve. The plug sleeve continues to move downwards. When the hook passes the annular mounting platform 2-1, the latch elastically resets, and the hook engages the upper surface of the annular mounting platform 2-1, completing the locking. During disassembly, the upper connector plug 2 moves upwards, and the upper surface of the annular mounting platform 2-1 pushes the hook upwards. The elastic latch 1-1 contracts towards the center, the hook disengages from the annular mounting platform 2-1, and the upper connector plug 2 is pulled out.

[0059] As a parallel option, two or four flexible hooks 1-1 can also be symmetrically arranged along the outer periphery of the base sleeve.

[0060] Example 4, based on Example 2, such as Figure 2 As shown, the outer wall of the base sleeve of the lower connector base 1 is provided with annular anti-misalignment ribs 1-4. The annular anti-misalignment ribs 1-4 are axially arranged protruding ribs on the outer wall of the base sleeve. The inner wall of the plug sleeve of the upper connector plug 2 is provided with anti-misalignment grooves 2-2 at corresponding positions. The position, shape and size of the anti-misalignment grooves 2-2 correspond to the protruding part of the annular anti-misalignment ribs 1-4.

[0061] During assembly, the plug sleeve can only be fitted into the base sleeve and continue to move downwards when the annular anti-misalignment rib 1-4 is aligned with the anti-misalignment groove 2-2; if the angle is incorrect, the annular anti-misalignment rib 1-4 will interfere with the inner wall of the plug sleeve, preventing the plug sleeve from moving downwards.

[0062] As a parallel solution, the roles of the annular anti-misalignment rib 1-4 and the anti-misalignment groove 2-2 are interchanged, that is, a raised rib is set on the inner wall of the plug sheath, and a groove is set on the corresponding position on the outer side of the base sheath.

[0063] Example 5, based on Example 2, such as Figure 5 As shown, the top of the plug sleeve of the upper connector plug 2 is provided with a PCB board 2-4. Positioning posts and support ribs are provided on the inner side of the top wall of the plug sleeve. The PCB board 2-4 rests on the support ribs and is limited by the positioning posts. The upper end of the male conductive terminal 2-3 passes upward through the corresponding metallized via on the PCB board 2-4, and is electrically connected and mechanically fixed by soldering to the circuit wiring of the PCB board 2-4. Sealant 2-6 is injected into the cavity at the top of the plug sleeve, completely covering the PCB board 2-4 and filling the gap between the PCB board 2-4 and the plug sleeve. After the sealant 2-6 cures, it forms a sealing layer.

[0064] The other end of the PCB board 2-4 has a solder pad, and one end of the FPC flexible board 2-5 is soldered to this solder pad. The FPC flexible board 2-5 extends from the top of the plug sheath and is embedded inside the heating foot pad 4. Two branches branch off from the end of the FPC flexible board 2-5: one connects to the power supply electrode of the heating film, and the other connects to the signal output terminal of the temperature sensor. In a preferred embodiment, the thickness of the FPC flexible board 2-5 is 0.1 mm to 0.3 mm.

[0065] The vehicle power supply enters the power wiring on the PCB board 2-4 through the male conductive terminal 2-3, and is then transmitted to the heating film through the FPC flexible board 2-5; the temperature signal collected by the temperature sensor is transmitted back to the signal processing circuit on the PCB board 2-4 through the FPC flexible board 2-5, and then transmitted back to the vehicle controller through the signal terminal in the male conductive terminal 2-3.

[0066] In Example 6, based on Example 5, a rigid protective cover 2-7 is provided on the outer side of the plug sheath of the upper connector plug 2. The rigid protective cover 2-7 is made of rigid engineering plastic, is shell-shaped, and is placed on the top outer side of the plug sheath, covering the soldering connection area between the PCB board 2-4 and the FPC flexible board 2-5. The rigid protective cover 2-7 is fixed to the plug sheath by snap-fit ​​or screws. The top surface of the rigid protective cover 2-7 is curved or beveled.

[0067] Example 7, based on Example 2, such as Figure 6 As shown, a rubber waterproof cover 3 is hinged to one side of the bottom of the plug sheath of the upper connector plug 2. In a preferred embodiment, the rubber waterproof cover 3 is molded from silicone rubber or EPDM material. The hinge is a thin-walled hinge integrally injection molded with the rubber waterproof cover 3 and the plug sheath, or a separate metal pin hinge.

[0068] like Figure 7 and Figure 8 As shown, when the upper connector plug 2 and the lower connector base 1 are inserted and locked, the rubber waterproof cover 3 flips upward and is stored in the storage groove 5-1 opened on the vehicle floor 5. The depth of the storage groove 5-1 is equal to the thickness of the rubber waterproof cover 3.

[0069] After the upper connector plug 2 separates from the lower connector base 1, the rubber waterproof cover 3 flips down and snaps onto the bottom port of the upper connector plug 2, covering the male conductive terminal 2-3 inside. The inner periphery of the rubber waterproof cover 3 is provided with a sealing lip 3-1, the cross-section of which is V-shaped or Y-shaped. When snapped on, the sealing lip 3-1 fits against the lower end face and outer peripheral wall of the inner sheath.

[0070] As a parallel solution, a torsion spring is also provided at the hinge joint between the rubber waterproof cover 3 and the bottom of the plug sleeve. The torsion spring is mounted on the hinge shaft, with one end abutting against the plug sleeve and the other end abutting against the rubber waterproof cover 3, providing the rubber waterproof cover 3 with a torsional force in the direction of fastening.

[0071] Example 8, based on Example 2, such as Figure 2 As shown, a through-type water guide groove 1-3 is provided on the base sleeve of the lower connector base 1. The water guide groove 1-3 is a channel that runs horizontally through the lower part of the side wall of the base sleeve, connecting the internal area of ​​the base sleeve with the external space. Multiple water guide grooves 1-3 are provided at intervals around the circumference of the base sleeve, with two or four arranged symmetrically.

[0072] An insulating silicone sealing layer 1-5 is provided on the island platform of the lower connector base 1. This insulating silicone sealing layer 1-5 is a silicone layer located at the insertion points of each female conductive terminal 1-2, and a slit is provided in the middle of the silicone layer. In the mating state, the slit is closed under the tension of the silicone layer itself. When the upper connector plug 2 is inserted into place, the male conductive terminal 2-3 is inserted into the slit, compressing the insulating silicone sealing layer 1-5, so that the insulating silicone sealing layer 1-5 seals the mating surfaces of the male conductive terminal 2-3 and the female conductive terminal 1-2. When the upper connector plug 2 is separated from the lower connector base 1, the elasticity of the silicone layer causes the slit to close.

[0073] In addition, a protective plate is also provided at the lower end of the base cover. A wing plate integrated with the base cover is provided at the lower middle part of the base cover. The wing plate and the protective plate are located on the upper and lower sides of the vehicle floor 5, respectively. The wing plate is connected to the protective plate through the vehicle floor 5 by a connecting rib, so that the wing plate and the protective plate clamp the vehicle floor 5 to achieve a stable installation.

[0074] Example 9, as Figure 1 and Figure 3 As shown, there are a total of six male conductive terminals 2-3, which are divided into three electrical circuits: a high-voltage power supply circuit, a live plug-in interlock circuit, and a temperature sensor signal acquisition circuit, with two terminals in each group.

[0075] In this embodiment, the terminals of the high-voltage power supply circuit are long pin terminals, the terminals of the temperature sensor signal acquisition circuit are long pin terminals, and the terminals of the hot-plug interlock circuit are short pin terminals. In this embodiment, the short pin terminals are 3mm to 5mm shorter than the long pin terminals.

[0076] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features, made within the spirit and principles of the present invention, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted heated floor mat connector assembly integrating floor mat fixing and conductive functions, characterized in that, The device includes a lower connector base (1) fixed to the vehicle floor (5) and an upper connector plug (2) fixed to the heated foot pad (4). The lower connector base (1) and the upper connector plug (2) are locked together by a locking engagement structure to mechanically fix the heated foot pad (4) relative to the vehicle floor (5) and electrically connect the female conductive terminal (1-2) in the lower connector base (1) with the male conductive terminal (2-3) in the upper connector plug (2). The male conductive terminal (2-3) includes a long pin terminal and a short pin terminal. The length of the short pin terminal is less than the length of the long pin terminal so that when the lower connector base (1) is separated from the upper connector plug (2), the short pin terminal disconnects before the long pin terminal.

2. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 1, characterized in that, The lower connector base (1) includes a base sleeve and an island platform disposed within the base sleeve, and the female conductive terminal (1-2) is disposed on the island platform; the upper connector plug (2) includes a plug sleeve and an inner sleeve disposed within the plug sleeve, the plug sleeve passes through the heating foot pad (4), and a cavity for the base sleeve to be inserted is formed inside the plug sleeve, and the male conductive terminal (2-3) is disposed within the inner sleeve; when plugged in, the inner sleeve is fitted outside the island platform.

3. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 2, characterized in that, The locking mechanism includes an elastic latch (1-1) and an annular mounting plate (2-1); the elastic latch (1-1) is located on the outside of the base sleeve of the lower connector base (1); the annular mounting plate (2-1) is located at the lower port of the insertion cavity; the elastic latch (1-1) and the annular mounting plate (2-1) are locked together.

4. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 2 or 3, characterized in that, The outer side of the base sleeve is provided with an annular anti-misalignment rib (1-4), and the inner wall of the plug sleeve is provided with an anti-misalignment groove (2-2). The annular anti-misalignment rib (1-4) and the anti-misalignment groove (2-2) are uniquely matched.

5. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 2 or 3, characterized in that, The top of the plug sheath is provided with a PCB board (2-4), and the PCB board (2-4) is sealed and fixed by sealant (2-6); one end of the PCB board (2-4) is electrically connected to the male conductive terminal (2-3), and the other end is connected to an FPC flexible board (2-5). The FPC flexible board (2-5) is embedded in the heating foot pad (4) and electrically connected to the heating film and the temperature sensor respectively.

6. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 5, characterized in that, The plug sheath has a hard protective cover (2-7) on the outside, which covers the soldering area of ​​the PCB board (2-4) and the FPC flexible board (2-5).

7. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 5, characterized in that, The bottom side of the plug sheath is hinged with a flip-up rubber waterproof cover (3); the vehicle floor (5) is provided with a storage groove (5-1) that cooperates with the rubber waterproof cover (3) for storing the rubber waterproof cover (3) when the upper connector plug (2) is inserted into the lower connector base (1); after the upper connector plug (2) is separated from the lower connector base (1), the rubber waterproof cover (3) snaps on and covers the terminal surface of the upper connector plug (2).

8. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to claim 7, characterized in that, The rubber waterproof cover (3) has a sealing lip (3-1) on the inner side, which is used to seal with the inner sheath when the rubber waterproof cover (3) is fastened.

9. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to any one of claims 2, 3, 6 to 8, characterized in that, The base sleeve is provided with a through-type water guide groove (1-3); the island platform is provided with an insulating silicone sealing layer (1-5) for sealing the mating surface when it is plugged into the upper connector plug (2).

10. The vehicle-mounted heated floor mat connector assembly with integrated floor mat fixing and conductive functions according to any one of claims 1-3 and 6-8, characterized in that, The female conductive terminal (1-2) and male conductive terminal (2-3) are provided with six pins to form three independent electrical circuits. The three independent electrical circuits include a high-voltage power supply circuit, a hot-plug interlock circuit, and a temperature sensor signal acquisition circuit. The high-voltage power supply circuit and the temperature sensor signal acquisition circuit are configured with long pin terminals, and the hot-plug interlock circuit is configured with short pin terminals.

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