Wireless seat belt reminder device

Abstract

A technology is provided for ensuring the straightness of electromagnetic wave signals transmitted and received based on the tightening of a belt buckle. A wireless seatbelt reminder device includes a tunnel member arranged parallel to the seat rail, with a channel formed in the tunnel member. When the seatbelt is fastened to the buckle, a sub-transmitting and receiving unit transmits an electromagnetic wave signal in the longitudinal direction of the channel. A main transmitting and receiving unit receives the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit within the channel and transmits the electromagnetic wave signal to an integrated controller.

Description

Technical Field

[0001] The present disclosure relates to a wireless seat belt reminder device that ensures the straightness of electromagnetic wave signals transmitted and received according to the fastening of a belt buckle, thereby improving the transmission and reception performance of the belt buckle fastening signal. Background Art

[0002] A seatbelt reminder is a device that, when a vehicle is traveling at a predetermined speed or higher, prompting the wearing of a seatbelt, alerts a passenger seated in a seat that the seatbelt is not being worn with a warning sound or light. The seatbelt reminder includes a buckle and an integrated central control unit (ICU) electrically connected via a wire. When the seatbelt is fastened to the buckle, a buckle fastening signal is transmitted to the ICU. The ICU is then connected to a vehicle controller via communication to output an alarm indicating whether the corresponding seatbelt is fastened.

[0003] Meanwhile, in recent years, a seat belt reminder device has been developed for wirelessly transmitting a signal indicating that a seat belt is fastened to a buckle to a vehicle controller. However, the device for wirelessly detecting whether a seat belt is worn has a reduced reception rate of the seat belt fastening signal transmitted to the vehicle controller due to the position of the seat, other obstacles, etc.

[0004] The above contents explained as background are only intended to help understanding the background of the present disclosure, and are not intended to mean that the present disclosure falls within the scope of the relevant technologies known to those skilled in the art. Summary of the Invention

[0005] The present disclosure provides a wireless seatbelt reminder device that ensures the straightness of electromagnetic wave signals transmitted and received according to the fastening of a belt buckle, thereby improving the transmission and reception performance of the belt buckle fastening signal.

[0006] The configuration of the present disclosure for achieving this purpose may include: a tunnel member, which is arranged parallel to the seat rail and has a channel formed therein; a sub-transmitting and receiving unit, which is configured to transmit an electromagnetic wave signal in the longitudinal direction of the channel in response to the seat belt being fastened to the buckle; and a main transmitting and receiving unit, which is configured to receive the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit within the channel to transmit the electromagnetic wave signal to the integrated controller.

[0007] The sub-transmitting and receiving unit may include: a sub-controller connected to the belt buckle and configured to receive a signal indicating that the seat belt is fastened to the belt buckle; and a sub-sensor module disposed within the tunnel member and configured to transmit an electromagnetic wave signal to the main transmitting and receiving unit by receiving the signal transmitted by the sub-controller.

[0008] The main transmitting and receiving unit may include: a main sensor module disposed within the tunnel member and configured to receive the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit; and a main controller configured to receive the electromagnetic wave signal transmitted by the main sensor module and transmit the electromagnetic wave signal to the integrated controller. The tunnel member may have an internal passage formed into a darkroom structure.

[0009] A through groove can be formed in the end of the tunnel member in the longitudinal direction; the connecting portion between the sub-controller and the sub-sensor module can pass through the through groove, and the sub-sensor module can be set in the tunnel member; and a dark chamber forming member made of a flexible material with a dark chamber structure in a shape covering the through groove can be joined.

[0010] The darkroom forming member may include a rubber or brush having the shape of a thin rubber plate and joined to the inner surface of the through groove. The tunnel member may be separately provided on the side surface of the seat rail. The tunnel member may be fixed to the vehicle body on the side of the seat rail; the first end of the module fixing bracket may be joined to the movable rail constituting the seat rail; the middle end of the module fixing bracket may pass through the through groove, and the second end of the module fixing bracket (opposite to the first end) may be joined to the sub-sensor module; a guide groove may be formed on the inner surface of the tunnel member connected to the through groove in the longitudinal direction; and a guide may be fixed to the middle end of the module fixing bracket, and the guide may slide along the guide groove. The inner surface of the tunnel member may be formed in a relatively bright white series color. A coating may be formed on the inner surface of the tunnel member. A reflector may be formed on the inner surface of the tunnel member.

[0011] With the above configuration, when the seat belt is fastened to the buckle, the present disclosure transmits an electromagnetic wave signal from the sub-transmitting and receiving unit in the longitudinal direction of the tunnel within the tunnel member, and allows the main transmitting and receiving unit to sense the electromagnetic wave signal within the tunnel member, thereby ensuring the straightness of the electromagnetic wave signal regardless of the position of the seat, other obstacles, etc. Therefore, the wireless transmission and reception performance of the electromagnetic wave signal can be improved according to the fastening of the buckle, thereby more accurately sensing whether the seat belt is being worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which:

[0013] Figure 1 is a diagram showing an interior configuration of a vehicle employing the wireless seatbelt reminder device according to the present disclosure, and an enlarged view of a seat rail and a tunnel member.

[0014] Figure 2is a diagram showing a system configuration for transmitting a seat belt fastening signal to an integrated controller according to the present disclosure.

[0015] Figure 3 is a diagram illustrating a configuration for wirelessly transmitting a seat belt fastening signal through a sub-transmitting and receiving unit and a main transmitting and receiving unit within a tunnel member according to the present disclosure.

[0016] Figure 4 is a view showing a sub-sensor module according to the present disclosure.

[0017] Figures 5 to 7 2 is a diagram illustrating a structure in which a sub-transmitting and receiving unit according to the present disclosure is coupled to a seat rail.

[0018] Figure 8 is a view showing a cross-sectional structure of a coating layer and a tunnel member according to the present disclosure.

[0019] Figure 9 is a view showing a cross-sectional structure in which a reflector according to the present disclosure is bonded to an inner surface of a tunnel member.

[0020] Figure 10 is a block diagram illustrating a process of transmitting a seat belt fastening signal according to the present disclosure. DETAILED DESCRIPTION

[0021] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally include motor vehicles, such as passenger automobiles, including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including various ships and boats, aircraft, etc., and include hybrid vehicles, electric vehicles, internal combustion plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum).

[0022] Although the exemplary embodiments are described as using multiple units to perform the exemplary processes, it should be understood that the exemplary processes can also be performed by one or more modules. In addition, it should be understood that the term controller / control unit refers to a hardware device that includes a memory and a processor and is specifically programmed to perform the processes described herein. The memory is configured to store the modules and the processor is specifically configured to execute the modules to perform one or more processes described further below.

[0023] Furthermore, the control logic of the present disclosure may be implemented as a non-transitory computer-readable medium on a computer-readable medium containing executable program instructions executed by a processor, controller / control unit, etc. Examples of computer-readable media include, but are not limited to, ROM, RAM, compact discs (CD-ROMs), magnetic tapes, floppy disks, flash drives, smart cards, and optical data storage devices. The computer-readable recording medium may also be distributed among network-connected computer systems such that the computer-readable medium is stored and executed in a distributed manner by a telematics server or a controller area network (CAN).

[0024] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when used in this specification, the terms "comprises" and / or "comprising" specify the presence of stated features, integers, steps, operations, elements, and / or parts, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0025] Unless otherwise specified or clear from the context, as used herein, the term "about" should be understood as within the normal tolerance range in the art, for example, within 2 standard deviations of the mean. "About" can be understood as within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05% or 0.01% of the stated value. Unless otherwise clear from the context, all numerical values ​​provided herein are modified by the term "about."

[0026] Preferred exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0027] Figure 1 1 is a diagram showing an interior configuration of a vehicle employing the wireless seatbelt reminder device according to the present disclosure, and an enlarged view of the seat rail 30 and the tunnel member 100 . Figure 2 is a diagram showing a system configuration for transmitting a seat belt 10 fastening signal to the integrated controller 400 according to the present disclosure.

[0028] refer to Figure 1 as well as Figure 2The present disclosure may include: a tunnel member 100, which is arranged parallel to the seat rail 30 and has a channel formed therein; a sub-transmitting and receiving unit 200, which is configured to transmit an electromagnetic wave signal within the channel in response to the seat belt 10 being fastened to the buckle 20; and a main transmitting and receiving unit 300, which is configured to receive the electromagnetic wave signal transmitted from the sub-transmitting and receiving unit 200 within the channel to transmit the electromagnetic wave signal to the integrated controller 400.

[0029] For example, the wireless seat belt reminder device according to the present disclosure can be applied to the third and fourth row seats of an RV vehicle, and seat rails 30 can be installed in the front-to-rear direction of the vehicle, and the seats can slide forward and backward along the seat rails 30. For reference, the seat rails 30 are configured so that a movable rail 32 engaged to the seat bottom can be slidably fitted into a fixed rail 34 fixed to the bottom of the vehicle body.

[0030] Furthermore, a tunnel member 100 may be mounted on the side of the seat rail 30 in the longitudinal direction of the vehicle, and a passage may be formed longitudinally inside the tunnel member 100 in the longitudinal direction. Each seat may be individually equipped with a buckle 20 to which a seat belt 10 is fastened. If the buckle 20 is electrically connected to the sub-transmitting and receiving unit 200 and the seat belt 10 is fastened, a seat belt 10 fastening signal may be transmitted to the sub-transmitting and receiving unit 200. Furthermore, when the seat belt 10 fastening signal is transmitted to the sub-transmitting and receiving unit 200, the sub-transmitting and receiving unit 200 may be configured to transmit an electromagnetic wave signal. Specifically, the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit 200 may be transmitted along the passage within the tunnel toward the main transmitting and receiving unit 300, and the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit 200 may be received by the main transmitting and receiving unit 300 within the tunnel.

[0031] In addition, the main transmitting and receiving unit 300 and the integrated controller 400 can be electrically connected. Therefore, when the electromagnetic wave signal is received in the main transmitting and receiving unit 300, the main transmitting and receiving unit 300 can send a tightening signal to the integrated controller 400, and further, the integrated controller 400 can be configured to output a warning indicating the tightening state of the seat belt 10 to the instrument panel 500, etc. Specifically, the integrated controller 400 can be an integrated central control unit (ICU). In addition, an infrared signal can be used as the electromagnetic wave signal, but all types of electromagnetic wave signals that can use light wavelengths such as ultraviolet light, visible light, or microwaves can be used in addition to infrared signals.

[0032] In other words, when the seat belt 10 is fastened to the buckle 20, an electromagnetic wave signal may be transmitted by the sub-transmitting and receiving unit 200 along the longitudinal direction of the passage within the tunnel member 100, and the main transmitting and receiving unit 300 may be configured to sense the electromagnetic wave signal within the tunnel member 100, thereby ensuring the straightness (e.g., straight direction) of the electromagnetic wave signal regardless of the position of the seat, other obstacles, etc.

[0033] Therefore, by improving the wireless transmission and reception performance of the electromagnetic wave signal according to the fastening of the buckle 20, it is possible to more accurately sense whether the seat belt 10 is worn, thereby improving the marketability of the product. In addition, the sub-transmitting and receiving unit 200 may include a sub-controller 210 and a sub-sensor module 220.

[0034] refer to Figure 2 as well as Figure 3 The sub-transmitting and receiving unit 200 may include a sub-controller 210 connected to the buckle 20 and may be configured to receive a signal indicating that the seat belt 10 is fastened to the buckle 20; and the sub-sensor module 220 provided in the tunnel member 100 may be configured to transmit an electromagnetic wave signal to the main transmitting and receiving unit 300 by receiving the signal transmitted by the sub-controller 210.

[0035] For example, sub-controller 210 may be a sub-ECU and may be installed separately on each seat. For reference, sub-controller 210 may be configured to be powered by a battery. Furthermore, sub-sensor module 220 may include an IR element as a transmitting sensor 222 that transmits infrared light, and main sensor module 320, described later, may include a photodiode as a receiving sensor to sense the infrared light transmitted by the IR element. In other words, when seat belt 10 is fastened to buckle 20, a buckle 20 fastening signal may be transmitted from sub-controller 210 to sub-sensor module 220, and an infrared signal may be transmitted from sub-sensor module 220 to main sensor module 320.

[0036] refer to Figure 9 Sub-sensor module 220 may include an IR element serving as receiving sensor 224 in addition to the IR element serving as transmitting sensor 222, thereby providing a pair of IR elements for transmission and reception. Thus, infrared signals can be transmitted and received within tunnel member 100, and the present disclosure can receive infrared signals transmitted by another sub-sensor module 220. Subsequently, main transmitting and receiving unit 300 may include main sensor module 320 and main controller 310.

[0037] refer to Figure 2 as well as Figure 3The main transmitting and receiving unit 300 may include: a main sensor module 320, which is provided inside the tunnel member 100 and is configured to receive the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit 200; and a main controller 310, which is configured to receive the signal transmitted by the main sensor module 320 to transmit the signal to the integrated controller 400.

[0038] For example, the main sensor module 320 may be positioned at the edge of the tunnel member 100 and equipped with a photodiode as a receiving sensor to sense infrared light transmitted by the sub-sensor module 220. Furthermore, the main controller 310 may be a main ECU mounted on the vehicle's C-filler. In other words, when the infrared signal transmitted by the sub-sensor module 220 is received by the main sensor module 320, the signal is transmitted from the main sensor module 320 to the main controller 310. The main controller 310 can then connect to the ICU, which serves as the integrated controller 400, to output a warning to the vehicle indicating the tightening status of the seat belt 10.

[0039] Meanwhile, the tunnel member 100 according to the present disclosure may include an inner passageway formed into a darkroom structure. In other words, if foreign matter is introduced into the tunnel member 100, or if signals other than the infrared signals passing through the sensor module are introduced, the corresponding infrared signal transmission and reception performance may be degraded. Therefore, by darkening the interior of the tunnel member 100, it is possible to prevent signals other than the infrared signal from being introduced into the tunnel member 100, as well as prevent other foreign matter from being introduced into the tunnel member 100, thereby improving the infrared signal transmission and reception performance.

[0040] also, Figures 4 to 6 is a diagram showing a structure in which the sub-transmitting and receiving unit 200 according to the present disclosure is coupled to the seat rail 30. Figures 5 to 7 A through-slot 110 may be formed at an end of the tunnel member 100 in the longitudinal direction. A connection between the sub-controller 210 and the sub-sensor module 220 passes through the through-slot 110. The sub-sensor module 220 may be disposed within the tunnel member 100. A darkroom-forming member 120, made of a flexible material and shaped to cover the through-slot 110, may be attached. In other words, the darkroom-forming member 120 minimizes light within the tunnel member 100.

[0041] For example, the edges of the front and rear ends of the tunnel member 100 are formed into a closed shape, and through-slots 110 are formed front and rearward on the sides of the upper end of the tunnel member 100 near the seat rails 30. In other words, the sub-controller 210 can be mounted on the seat and disposed outside the tunnel member 100, while the sub-sensor module 220 can be mounted inside the tunnel member 100. To dispose the sub-sensor module 220 inside the tunnel member 100, a connection portion (e.g., a wire) is required between the sub-controller 210 and the sub-sensor module 220 via the through-slots 110.

[0042] However, in this case, the through groove 110 may be opened so that external light can be introduced into the tunnel member 100, thereby preventing the light from being introduced into the tunnel member 100 by covering the dark chamber forming member 120 on the through groove 110, thereby darkening the tunnel member 100 even when the sub-sensor module 220 is provided within the tunnel member 100. In addition, the dark chamber forming member 120 may be formed of rubber or a brush having a thin rubber plate shape and bonded to the inner surface of the through groove 110.

[0043] In other words, when the movable rail 32 moves, the connection between the sub-controller 210 and the sub-sensor module 220 moves along the through-slot 110. During the movement of the connection, the rubber or brush area contacting the connection flexibly deforms and then immediately recovers. This allows for smooth movement of the connection and stable darkening of the tunnel member 100. According to the present disclosure, the tunnel member 100 can be separately disposed on the side surface of the seat rail 30. A separate bracket structure can also be formed inside the tunnel member 100 to position the sub-sensor module 220.

[0044] refer to Figures 4 to 6 The tunnel member 100 may be fixed to the vehicle body on the side of the seat rail 30; the first end of the module fixing bracket 230 may be coupled to the movable rail 32 constituting the seat rail 30; the middle end of the module fixing bracket 230 may pass through the through-slot 110, and the second end of the module fixing bracket 230 may be coupled to the sub-sensor module 220; a guide groove 150 may be formed in the longitudinal direction in the inner surface 100a of the tunnel member 100 connected to the through-slot 110; and a guide 250 may be fixed to the middle end of the module fixing bracket 230 so that the guide 250 slides along the guide groove 150. The middle end may be arranged between the first end and the second end, and the second end may be opposite the first end.

[0045] Specifically, the connection portion between the sub-controller 210 and the sub-sensor module 220 is changed to a state where it is locked to a portion of the module fixing bracket 230 and engaged along the module fixing bracket 230. Therefore, when the movable guide rail 32 moves, the module fixing bracket 230 moves together with the connection portion between the sub-controller 210 and the sub-sensor module 220, and specifically, the guide 250 can slide along the guide groove 150 during the movement of the module fixing bracket 230 to stably guide the movement of the sub-sensor module 220.

[0046] Meanwhile, according to the present disclosure, the inner surface 100a of the tunnel member 100 can be formed in a relatively bright white series color. In other words, a bright color series that is conducive to light reflection can be used as the color of the inner surface 100a of the tunnel member 100, thereby improving the transmission and reception performance of infrared signals.

[0047] Further, Figure 7 is a view showing the cross-sectional structure of the coating 130 and the tunnel member 100, and referring to Figure 7 , the coating layer 130 may be formed on the inner surface 100a of the tunnel member 100. In other words, the coating layer 130 may be applied to the inner surface 100a of the tunnel member 100 to improve the transmission and reception performance and reception rate of infrared signals.

[0048] in addition, Figure 8 is a view showing a cross-sectional structure in which the reflector 140 according to the present disclosure is bonded to the inner surface 100a of the tunnel member 100, and with reference to Figure 8 , the reflector 140 may be formed on the inner surface 100a of the tunnel member 100. In other words, the reflector 140 may be applied to the inner surface 100a of the tunnel member 100 to improve the transmission and reception performance and reception rate of infrared signals.

[0049] For reference, the position and shape of the reflector 140 may be deformed according to the shape of the tunnel member 100, and as the shape of the tunnel member 100, various shapes such as a straight line, a curve, a circle, and an ellipse may be adopted, and as the cross-sectional shape of the tunnel member 100, various shapes including a rectangle, a circle, and a triangle may be adopted.

[0050] Figure 10 is a block diagram illustrating a process of transmitting a safety belt 10 fastening signal according to the present disclosure. Figure 2 as well as Figure 10 , describing a process of determining whether the seat belt 10 is wirelessly fastened, when the seat belt 10 is fastened to the buckle 20 (S10), the sub-controller 210 may be configured to sense the fastening to transmit a seat belt 10 fastening signal from the sub-controller 210 to the sub-sensor module 220 (S20).

[0051] Subsequently, when the transmitting sensor 222 of the sub-sensor module 220 transmits an infrared signal, the receiving sensor of the main sensor module 320 can be configured to receive the transmitted infrared signal (S30). The main sensor module 320 can then be configured to transmit a tightening signal to the main controller 310 (S40). As a result, the main controller 310 is connected to the ICU (S50), and the ICU can be configured to display the tightening status of the corresponding seat belt 10 on the instrument panel 500 or output a tightening status warning through sound (S60).

[0052] As described above, according to the present disclosure, when the seat belt 10 is fastened to the buckle 20, the sub-transmitting and receiving unit 200 can be configured to transmit an electromagnetic wave signal in the longitudinal direction of the tunnel within the tunnel member 100, and the main transmitting and receiving unit 300 can be configured to sense the electromagnetic wave signal within the tunnel member 100, thereby ensuring the straightness of the electromagnetic wave signal regardless of the position of the seat, other obstacles, etc. Therefore, by improving the wireless transmission and reception performance of the electromagnetic wave signal according to the fastening of the buckle 20, it is possible to more accurately sense whether the seat belt 10 is being worn, thereby improving the marketability of the product.

[0053] For reference, the controller according to the exemplary embodiment of the present disclosure can be implemented by a non-volatile memory (not shown) and a processor (not shown), the non-volatile memory being configured to store data related to algorithms configured to perform operations of various components of the vehicle or software instructions for reproducing the algorithms, and the processor being configured to use the data stored in the corresponding memory to perform the operations described below. Specifically, the memory and the processor can be implemented by separate chips. Alternatively, the memory and the processor can be implemented by a single chip integrated with each other. The processor can be in the form of one or more processors.

[0054] At the same time, although only specific exemplary embodiments of the present disclosure are shown in detail, it is obvious to those skilled in the art that various modifications and changes can be made to the present disclosure without departing from the technical spirit of the present disclosure, and these modifications and changes naturally fall within the scope of the appended claims.

Claims

1. A wireless seat belt reminder device, comprising: a tunnel member disposed parallel to the seat rail and having a passage formed therein, wherein through grooves are formed in ends of the tunnel member in a longitudinal direction; a sub-transmitting and receiving unit configured to transmit an electromagnetic wave signal in a longitudinal direction of the passage in response to the seat belt being fastened to the buckle; and a main transmitting and receiving unit configured to receive the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit within the channel to transmit the electromagnetic wave signal to an integrated controller, wherein the first end of the module fixing bracket is engaged with the seat rail, Wherein, the middle end of the module fixing bracket passes through the through slot, wherein a guide groove is formed on the inner surface of the tunnel member connected to the through groove in the longitudinal direction; The module fixing bracket slides along the guide groove.

2. The wireless seat belt reminder device according to claim 1, wherein: The sub-transmitting and receiving unit includes: a sub-controller connected to the buckle and configured to receive a signal indicating that the seat belt is fastened to the buckle; and A sub-sensor module is provided in the tunnel member and is configured to transmit the electromagnetic wave signal to the main transmitting and receiving unit by receiving a signal transmitted by the sub-controller.

3. The wireless seat belt reminder device according to claim 1, wherein: The main sending and receiving unit includes: a main sensor module disposed in the tunnel member and configured to receive the electromagnetic wave signal transmitted by the sub-transmitting and receiving unit; and The main controller is configured to receive the electromagnetic wave signal sent by the main sensor module and transmit the electromagnetic wave signal to the integrated controller.

4. The wireless seat belt reminder device according to claim 2, wherein: The tunnel member has an inner passage formed into a darkroom structure.

5. The wireless seat belt reminder device according to claim 4, in, A connection portion provided between the sub-controller and the sub-sensor module passes through the through slot, and the sub-sensor module is provided in the tunnel member. The darkroom forming member of the darkroom structure is made of a flexible material and has a shape covering the through groove.

6. The wireless seat belt reminder device according to claim 5, wherein: The dark chamber forming member is composed of rubber or a brush having a shape of a thin rubber plate and joined to an inner surface of the through groove.

7. The wireless seat belt reminder device according to claim 5, wherein: The tunnel member is separately provided on a side surface of the seat rail.

8. The wireless seat belt reminder device according to claim 5, in, The tunnel member is fixed to the vehicle body on the side of the seat rail, wherein the first end of the module fixing bracket is engaged with a movable guide rail constituting the seat guide rail, The second end of the module fixing bracket is connected to the sub-sensor module. and Wherein, the guide is fixed to the middle end of the module fixing bracket, and the guide slides along the guide groove.

9. The wireless seat belt reminder device according to claim 1, wherein: The inner surface of the tunnel member is formed in a relatively bright white series color.

10. The wireless seat belt reminder device according to claim 1, wherein: A coating is formed on the inner surface of the tunnel member.

11. The wireless seat belt reminder device according to claim 1, wherein: A reflector is formed on an inner surface of the tunnel member.

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