Electric vehicle seat cushion with automatic heating and timing functions

Abstract

This utility model relates to an electric vehicle seat cushion with automatic heating and timing functions, belonging to the technical field of electric vehicle parts. The electric vehicle seat cushion with automatic heating and timing functions includes: a base with a countersunk hole at its bottom; a hollow bracket that snaps onto the top of the base, the inner top wall of the hollow bracket having a threaded groove aligned with the countersunk hole; and a locking bolt inserted into the countersunk hole, the shank of the locking bolt penetrating the countersunk hole and threadedly connected to the threaded groove. This electric vehicle seat cushion achieves modular installation of the heating module through the snap-fit ​​and threaded connection structure of the base, hollow bracket, and locking bolt. When the heating film is damaged, only the locking bolt needs to be unscrewed to separate the hollow bracket for quick replacement, without disassembling the entire seat cushion, significantly reducing maintenance costs and time.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle parts technology, and in particular to an electric vehicle seat cushion with automatic heating and timing functions. Background Technology

[0002] The electric vehicle seat is a core component for riders. In recent years, smart seats with timer and heating functions have become increasingly popular. They achieve controllable heating through electric heating elements and intelligent control systems, improving riding comfort in low-temperature environments.

[0003] In this type of heated seat cushion, the heating wire is prone to short circuits, aging, or damage in environments such as vibration and humidity. Once a failure occurs, it is often necessary to disassemble the entire seat cushion or replace all heating modules, resulting in high repair costs, long repair times, and negatively impacting the user experience. Utility Model Content

[0004] Therefore, it is necessary to address the problem that current smart heated electric vehicle seats have easily damaged built-in heating elements and high repair and replacement costs, and to provide an electric vehicle seat with automatic heating and timer functions.

[0005] An electric vehicle seat cushion with automatic heating and timer functions includes:

[0006] A base, wherein a countersunk hole is provided at the bottom of the base;

[0007] A hollow bracket is snapped onto the top of the base, and the inner top wall of the hollow bracket has a threaded groove aligned with the countersunk hole.

[0008] A locking bolt, wherein the locking bolt is inserted into the interior of a countersunk hole, and the shank of the locking bolt passes through the countersunk hole and is threadedly connected to a threaded groove;

[0009] A heating module, comprising an electric heating film laid on the top of a hollow support, wherein the terminals of the electric heating film are electrically connected to a micro controller with a timing function.

[0010] A waterproof sponge seat cushion is attached to the surface of a hollowed-out bracket, and the inner top wall of the waterproof sponge seat cushion is in contact with an electrothermal film.

[0011] In one embodiment, the top of the base has a groove, and the electrothermal film is embedded inside the groove.

[0012] In one embodiment, the depth of the groove is adapted to the thickness of the heating film, and the upper surface of the heating film does not protrude from the opening of the groove.

[0013] In one embodiment, the interior of the groove is lined with a heat insulation film, and the electric heating film is embedded in the inner side of the heat insulation film.

[0014] In one embodiment, the base has a placement cavity communicating with the groove, the microcontroller is embedded in the placement cavity, and the wires of the microcontroller extend out of the placement cavity.

[0015] In one embodiment, a foam double-sided adhesive is bonded between the microcontroller and the placement cavity, the thickness of the foam double-sided adhesive being no less than three millimeters.

[0016] In one embodiment, an insulating sleeve is embedded in the opening at the bottom of the placement cavity, through which the wires of the microcontroller pass.

[0017] In one embodiment, the cross-sectional shapes of the placement cavity and the contact portion of the insulating sleeve are both I-shaped and matched.

[0018] In one embodiment, the countersunk hole, threaded groove, and locking bolt are all in pairs and are symmetrically distributed on both sides of the center point of the base.

[0019] In one embodiment, the center line connecting the two countersunk holes passes through the center point of the base, and the locking bolts are symmetrically distributed on both sides of the center point.

[0020] Beneficial effects

[0021] 1. The aforementioned electric vehicle seat cushion with automatic heating and timer functions achieves modular installation of the heating module through a snap-fit ​​and threaded connection structure of a base, a hollow bracket, and locking bolts. When the heating film is damaged, the hollow bracket can be quickly replaced simply by unscrewing the locking bolts, without disassembling the entire seat cushion, significantly reducing maintenance costs and time.

[0022] 2. The heating film is embedded in and protected by the groove of the base, which can effectively resist vibration and compression; the heat insulation film blocks the downward transfer of heat, improving thermal efficiency and safety; the microcontroller is damped by double-sided foam tape and sealed with an insulating sleeve, and the overall structure effectively improves the reliability and service life of the components. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 for Figure 1 Schematic sectional view along the middle AA direction;

[0026] Figure 3 for Figure 2 Enlarged view of C;

[0027] Figure 4 for Figure 1 Cross-sectional view along the middle BB direction;

[0028] Figure 5 This is an exploded view of the overall structure of this utility model.

[0029] Figure label:

[0030] 100, Base; 110, Countersunk Hole; 120, Groove; 130, Placement Cavity; 200, Hollowed-out Bracket; 210, Threaded Groove; 300, Locking Bolt; 400, Heating Module; 410, Electric Heating Film; 420, Microcontroller; 500, Waterproof Sponge Cushion; 600, Heat Insulation Film; 700, Foam Double-sided Adhesive; 800, Insulating Sleeve. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] The following is combined with Figure 1 - Figure 5 This invention describes an electric vehicle seat cushion with automatic heating and timer functions.

[0033] In one embodiment, an electric vehicle seat cushion with automatic heating and timing functions includes:

[0034] The base 100 has a countersunk hole 110 at its bottom;

[0035] A hollow bracket 200 is snapped onto the top of the base 100, and the inner top wall of the hollow bracket 200 is provided with a threaded groove 210 aligned with the countersunk hole 110.

[0036] A locking bolt 300 is inserted into the countersunk hole 110, and the shank of the locking bolt 300 passes through the countersunk hole 110 and is threadedly connected to the threaded groove 210.

[0037] Heating module 400, the heating module 400 includes an electric heating film 410 laid on the top of the hollow support 200, the wiring terminals of the electric heating film 410 are electrically connected to a micro controller 420 with a timing function.

[0038] For the microcontroller 420, the G32A1445 from Jihai Semiconductor can be selected as the main control chip. This model is an automotive-grade general-purpose MCU with an ARM Cortex-M3 core architecture that boasts high reliability and anti-interference capabilities, making it highly adaptable to the voltage fluctuations and electromagnetic interference of the automotive environment. Its built-in real-time clock module and EEPROM memory provide the hardware foundation for achieving precise timing switching functions and storing user-defined parameters.

[0039] The core function of the microcontroller 420 is, first and foremost, a timer switch. The microcontroller 420 must be able to receive, store, and execute timer commands sent by the user via wired or wireless means to control the heating film 410 to start or stop heating at a preset time.

[0040] Secondly, there is the over-temperature protection function. This is a critical safety feature. The controller needs to continuously monitor the operating temperature of the heating film 410 via an external temperature sensor. Once the temperature exceeds the preset safety threshold, the microcontroller 420 must be able to immediately cut off the power supply to prevent burns or fires, and send an alarm message to the user via the communication link.

[0041] Wired communication is primarily achieved through the CAN or LIN bus interface of the microcontroller 420. This is a reliable and interference-resistant professional in-vehicle communication protocol that allows the seat controller to exchange data with other electronic control units in the vehicle.

[0042] The mobile app's wireless connection function can be implemented in two ways. If the main control chip is a JHTC or STM32 model, an external Bluetooth or Wi-Fi module is required; if an ESP32 is used as the main control chip, its integrated wireless function can be utilized directly. The mobile app establishes an encrypted connection with the microcontroller 420 via a wireless link, enabling all remote monitoring and control functions, including parameter setting, manual switching, status viewing, and receiving alarm information.

[0043] Microcontroller 420 System Workflow and Usage: After the system is powered on, the microcontroller 420 initializes and enters standby mode. Users first set heating parameters via a mobile app or wired connection, including timer settings, target temperature, and upper temperature protection limit. These parameters are stored in the microcontroller 420's non-volatile memory.

[0044] When the predetermined time is reached or the user manually starts the device remotely via the APP, the microcontroller 420 begins to operate. It dynamically adjusts the power output to the heating film 410 using pulse width modulation technology, while simultaneously reading the temperature value in real time through a temperature sensor and employing a control algorithm for closed-loop regulation to stabilize the temperature at the user-set value.

[0045] Throughout the heating process, the over-temperature protection function remains active. If the system detects any abnormal over-temperature, the microcontroller 420 immediately and unconditionally cuts off the heating power and reports a fault. Upon reaching the end of the timer or after manual shutdown by the user, the system stops heating and re-enters low-power standby mode.

[0046] A waterproof sponge cushion 500 is bonded to the surface of the hollow bracket 200, and the inner top wall of the waterproof sponge cushion 500 is in contact with the electric heating film 410.

[0047] like Figure 2-5 As shown, the base 100 has a groove 120 on its top, and the electric heating film 410 is embedded in the groove 120 to achieve precise positioning and fixed installation of the electric heating film 410, ensuring its working stability and preventing displacement.

[0048] The depth of the groove 120 is adapted to the thickness of the heating film 410, and the upper surface of the heating film 410 does not protrude from the groove 120, ensuring that the surface of the seat cushion is flat, improving the comfort of riding and preventing the heating film 410 from being squeezed and damaged.

[0049] The interior of the groove 120 is lined with a heat insulation film 600, and the electric heating film 410 is embedded in the inner side of the heat insulation film 600. The heat insulation film 600 effectively blocks the heat from being transferred to the base 100, thereby improving thermal efficiency and reducing energy loss.

[0050] The base 100 has a placement cavity 130 that communicates with the groove 120. The microcontroller 420 is embedded in the placement cavity 130. The wires of the microcontroller 420 extend out of the placement cavity 130, making the overall structure more compact and providing good physical protection for the microcontroller 420.

[0051] The microcontroller 420 is bonded to the placement cavity 130 with double-sided foam adhesive 700. The thickness of the double-sided foam adhesive 700 is not less than three millimeters. It utilizes its shock absorption and buffering properties to resist the vibration and impact during vehicle operation, while also enhancing the insulation and heat insulation effects.

[0052] An insulating sleeve 800 is embedded in the opening at the bottom of the placement cavity 130. The wires of the microcontroller 420 pass through the insulating sleeve 800. The insulating sleeve 800 achieves sealing and insulation, effectively preventing moisture and dust from entering the interior of the placement cavity 130.

[0053] The cross-sectional shapes of the contact points of the placement cavity 130 and the insulating sleeve 800 are both I-shaped, and the I-shaped cross-section interlocking structure enhances the connection firmness and sealing reliability.

[0054] The countersunk hole 110, threaded groove 210 and locking bolt 300 are all in pairs and symmetrically distributed on both sides of the center point of the base 100. The symmetrical layout achieves force balance and improves installation stability and structural strength.

[0055] The center line connecting the two countersunk holes 110 passes through the center point of the base 100, and the locking bolts 300 are symmetrically distributed on both sides of the center point to further optimize the mechanical distribution and ensure the overall balance and safety of the seat cushion.

[0056] Working principle: The user sets the heating time and temperature via the microcontroller 420. After startup, the heating film 410 generates heat, which is conducted to the seating surface through the waterproof sponge cushion 500, while the heat insulation film 600 prevents heat loss downwards. The microcontroller 420 automatically shuts off after the timer expires. For maintenance, the hollow bracket 200 can be separated by unscrewing the two locking bolts 300, allowing for quick replacement of the heating film 410. Its advantages include: the modular design, through the combination of the base 100, hollow bracket 200, and locking bolts 300, enables quick assembly and disassembly of the core heating element, significantly reducing maintenance costs; the recessed groove 120 provides embedded protection for the heating film 410, improving its vibration resistance and reliability; the heat insulation film 600 enhances thermal efficiency and safety; the microcontroller 420 uses foam double-sided adhesive 700 for shock absorption and I-shaped insulating sleeve 800 for sealing and insulation, ensuring the stability of the control unit; and the symmetrically distributed locking bolts 300 ensure a stable and balanced overall structure.

[0057] It should be noted that the electric heating film 410 and the microcontroller 420 mentioned above are both devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, both the electric heating film 410 and the microcontroller 420 are powered by the electric vehicle's power supply. The specific wiring method needs to be designed according to the actual situation, which will not be elaborated here.

[0058] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electric vehicle seat cushion with automatic heating and timer functions, characterized in that, include: A base (100) has a countersunk hole (110) at its bottom; A hollow bracket (200) is snapped onto the top of the base (100), and the inner top wall of the hollow bracket (200) is provided with a threaded groove (210) aligned with the countersunk hole (110). A locking bolt (300) is inserted into the interior of a countersunk hole (110), and the shank of the locking bolt (300) passes through the countersunk hole (110) and is threadedly connected to a threaded groove (210). Heating module (400), the heating module (400) includes an electric heating film (410) laid on the top of the hollow support (200), the terminals of the electric heating film (410) are electrically connected to a micro controller (420) with timing function; A waterproof sponge cushion (500) is bonded to the surface of a hollow bracket (200), and the inner top wall of the waterproof sponge cushion (500) is in contact with an electrothermal film (410).

2. The electric vehicle seat cushion with automatic heating and timing functions according to claim 1, characterized in that, The base (100) has a groove (120) on its top, and the electric heating film (410) is embedded in the groove (120).

3. The electric vehicle seat cushion with automatic heating and timing functions according to claim 2, characterized in that, The depth of the groove (120) is adapted to the thickness of the heating film (410), and the upper surface of the heating film (410) does not protrude from the groove (120).

4. The electric vehicle seat cushion with automatic heating and timing functions according to claim 2, characterized in that, The interior of the groove (120) is covered with a heat insulation film (600), and the electric heating film (410) is embedded in the inner side of the heat insulation film (600).

5. The electric vehicle seat cushion with automatic heating and timing functions according to claim 1, characterized in that, The base (100) has a placement cavity (130) that communicates with the groove (120) inside. The microcontroller (420) is embedded in the placement cavity (130) and the wires of the microcontroller (420) pass through the outside of the placement cavity (130).

6. The electric vehicle seat cushion with automatic heating and timing functions according to claim 5, characterized in that, The microcontroller (420) is bonded to the placement cavity (130) with foam double-sided adhesive (700), and the thickness of the foam double-sided adhesive (700) is not less than three millimeters.

7. The electric vehicle seat cushion with automatic heating and timing functions according to claim 5, characterized in that, An insulating sleeve (800) is embedded in the opening at the bottom of the placement cavity (130), and the wires of the microcontroller (420) pass through the insulating sleeve (800).

8. The electric vehicle seat cushion with automatic heating and timing functions according to claim 5, characterized in that, The cross-sectional shapes of the contact area between the placement cavity (130) and the insulating sleeve (800) are both I-shaped.

9. The electric vehicle seat cushion with automatic heating and timing functions according to claim 1, characterized in that, The countersunk hole (110), threaded groove (210) and locking bolt (300) are all two in number and are symmetrically distributed on both sides of the center point of the base (100).

10. The electric vehicle seat cushion with automatic heating and timing functions according to claim 9, characterized in that, The center line connecting the two countersunk holes (110) passes through the center point of the base (100), and the locking bolts (300) are symmetrically distributed on both sides of the center point.

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