Safety belt retractor with self-adaptive function, automobile seat and unlocking method of automobile seat

Abstract

The invention discloses a safety belt retractor with a self-adaptive function, an automobile seat and an unlocking method of the safety belt retractor, and solves the problem that an existing safety belt SAMS retractor cannot be unlocked in the self-adaptive function implementation process by adding an unlocking mechanism. The device comprises a frame assembly and a belt sensitive assembly, a vehicle sensitive assembly, a mechanical end assembly and an unlocking mechanism which are installed on the same side of the frame assembly, the unlocking mechanism comprises an actuator, an execution piece, a controller module and a seat adjusting sensor, and through the arrangement of the unlocking mechanism, when a seat backrest inclines backwards, the actuator is controlled through the controller module to adjust the seat backrest; according to the self-adaptive locking device, the actuating part is driven to move, the fixing claw of the locking device is driven to be quickly separated from the vehicle sensitive assembly, the self-adaptive function is recovered, the comfort and the use experience of passengers are improved, and meanwhile the overall performance of the product and the user satisfaction are also improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile equipment, and in particular to a seat belt retractor with an adaptive function, a car seat, and an unlocking method thereof. Background Art

[0002] The fully mechanical SAMS retractor is a common safety device. The locking vehicle-sensitive component device inside its mechanical end achieves the locking function by pulling out the webbing. This design can effectively ensure the safety of the occupants under normal circumstances. However, in certain special usage scenarios, such as when the seat system adjusts the seat back tilt, there are some shortcomings: the webbing will remain in the pulled-out state, causing the locking vehicle-sensitive component device to remain locked continuously. This continuous locking state makes it impossible for the retractor to achieve the adaptive function, causing the sensitive component to produce an angular locking phenomenon, further affecting the normal use of the retractor. Since the retractor's adaptive performance cannot be brought into play, it is impossible to automatically adjust the tightness of the webbing according to actual conditions, which reduces its applicability in special scenarios. At the same time, the occupants will feel uncomfortable during use, which in turn affects the user experience and reduces the overall performance and user satisfaction of the product. Summary of the Invention

[0003] To this end, the present application provides a seat belt retractor with an adaptive function, a car seat and an unlocking method thereof, and solves the problem that the existing seat belt SAMS retractor cannot be unlocked during the implementation of the adaptive function by adding an unlocking mechanism.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] In a first aspect, a seat belt retractor with an adaptive function comprises: a frame assembly, and a belt-sensitive assembly, a vehicle-sensitive assembly, a mechanical end assembly, and an unlocking mechanism mounted on the same side of the frame assembly; the frame assembly comprises a frame body and a core shaft mounted on the frame body, the belt-sensitive assembly being mounted on the core shaft;

[0006] The mechanical end assembly is arranged outside the frame body, and the mechanical end assembly includes a locking device and a vehicle-sensitive mechanism rod, the belt-sensitive assembly is associated with the vehicle-sensitive assembly through the vehicle-sensitive mechanism rod, and the vehicle-sensitive assembly is also connected to the shaft sleeve at the end of the core shaft through the locking device;

[0007] The unlocking mechanism includes an actuator, an executive member and a controller module. One end of the executive member is connected to the actuator, and the other end of the executive member is associated with the locking device. The controller module is connected to the actuator so that the executive member separates the locking device from the vehicle-sensitive component under the control of the actuator.

[0008] Optionally, the actuator is connected to the controller module via a wiring harness;

[0009] A seat adjustment sensor is also included, and the seat adjustment sensor is connected to the controller module.

[0010] Optionally, the actuator includes a connecting rod connected to the actuator, the connecting rod is connected to the push-pull portion, and the push-pull portion is used to cooperate with the middle position of the locking device.

[0011] Optionally, the actuator is a motor, and the motor is connected to one end of the actuator via a gear rack structure;

[0012] Alternatively, the actuator is an electromagnet, and one end of the actuator is connected to the iron core of the electromagnet through a connecting member.

[0013] Optionally, the actuator is an electromagnet, a motor, a hydraulic or a pneumatic mechanism.

[0014] Optionally, the vehicle-sensing component is fixed to the outside of the frame body through a fixing seat; and a fixing claw is provided at the end of the locking device;

[0015] The vehicle-sensitive component includes a sensitive mechanism rod, one end of which is connected to the vehicle-sensitive mechanism rod, and one end of which is connected to a steel ball. The steel ball is installed in a steel ball seat, and the steel ball seat is provided with a counterweight block and teeth engaged with the fixed claw.

[0016] Optionally, the mechanical end assembly further comprises the shaft sleeve, a first connecting member is provided on the outside of the shaft sleeve, and the connecting key between the shaft sleeve and the first connecting member is a core shaft, and the locking device moves with the core shaft.

[0017] In a second aspect, a car seat device includes: a seat and a safety belt SAMS retractor installed on the seat, wherein the safety belt SAMS retractor adopts the above-mentioned safety belt retractor with adaptive function.

[0018] In a third aspect, a method for unlocking a seat belt retractor with an adaptive function is provided, using the aforementioned seat belt retractor with an adaptive function; the method comprises the following steps:

[0019] Step 1: In the initial state, the webbing is pulled out and the locking device locks the vehicle sensor component;

[0020] Step 2: The seat adjustment sensor detects seat back adjustment and sends a seat back adjustment signal to the controller module. The controller module is configured to determine whether the seat back adjustment angle exceeds a set value based on the received signal. When the seat back is adjusted, the retractor installed on the seat back changes its angle relative to the horizontal plane. Each time the angle change reaches the set value or the angle change stops, the controller module controls the actuator to operate.

[0021] Step 3: The actuator receives the command and executes the driving action, causing the actuator to quickly move and execute at least one operation command;

[0022] Step 4: The actuator drives the locking device to quickly disengage from the vehicle-sensing component, and the locking state is released;

[0023] Step 5: After the locking device is disengaged, the controller module controls the actuator to perform a reset action and quickly return to the initial state to prepare for the next execution cycle action.

[0024] Optionally, the set value is 40°, and every 40° or angle change stops as one cycle.

[0025] Compared with the prior art, this application has at least the following beneficial effects:

[0026] 1. Based on further analysis and research on existing technical problems, this application provides a seat belt retractor with an adaptive function. Through the setting of the unlocking mechanism, when the seat adjustment sensor detects the angle change signal of the seat back, the signal is sent to the controller module, and the actuator is controlled by the controller module to cause the actuator to move, and drive the fixed claw of the locking device to quickly disengage from the vehicle-sensitive component, release the locked state, and then restore the adaptive function of the retractor, ensuring that the retractor can still work normally in special scenarios, improving the comfort and user experience of the passengers, not only improving the overall performance of the product, but also enhancing user satisfaction, while improving the reliability and economy of the system.

[0027] 2. The present application also provides a car seat device and a method for unlocking a seat belt retractor with an adaptive function, both of which use the above-mentioned seat belt retractor with an adaptive function; when the seat back is adjusted in angle, the retractor's rotation angle relative to the horizontal plane changes by 40° or the angle change action stops, the controller module controls the actuator to execute an operation command at least once, so that the unlocking device is unlocked and reset at least once, so that when the zero-gravity seat adjusts its angle, the retractor can restore its adaptive function, thereby achieving normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more intuitively illustrate the prior art and the present application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be considered as limiting conditions for implementing the present application; for example, based on the technical concepts disclosed in this application and the exemplary drawings, those skilled in the art are capable of easily making routine adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components).

[0029] Figure 1 A schematic diagram of the structure of a seat belt retractor with adaptive function provided in one embodiment of the present application Figure 1 ;

[0030] Figure 2 A schematic diagram of the structure of a seat belt retractor with adaptive function provided in one embodiment of the present application Figure 2 ;

[0031] Figure 3 An exploded schematic diagram of a seat belt retractor with adaptive function provided by one embodiment of the present application;

[0032] Figure 4 for Figure 1 Schematic diagram of the structure of the vehicle's sensitive components Figure 1 ;

[0033] Figure 5 for Figure 1 Schematic diagram of the structure of the vehicle's sensitive components Figure 2 ;

[0034] Figure 6 for Figure 1 A schematic diagram of the structure of the connection between the middle shaft sleeve and the locking device;

[0035] Figure 7 for Figure 1 Schematic diagram of the structure of the unlocking mechanism;

[0036] Figure 8 for Figure 1 Schematic diagram of the structure of the connection between the unlocking mechanism and the locking device Figure 1 ;

[0037] Figure 9 for Figure 1 Schematic diagram of the structure of the connection between the unlocking mechanism and the locking device Figure 2 ;

[0038] Figure 10 A circuit diagram of an embodiment of the present invention is provided.

[0039] Description of reference numerals:

[0040] 1. Frame assembly; 11. Frame body; 12. Mandrel;

[0041] 2. With sensitive components;

[0042] 3. Vehicle sensitive component; 31. Sensitive mechanism rod; 32. Steel ball; 33. Steel ball seat; 331. Gear; 34. Counterweight;

[0043] 4. Mechanical end assembly; 41. Bushing; 42. Vehicle-sensing mechanism rod; 43. Locking device; 431. Fixing claw; 44. Positioning cover; 45. Outer cover; 46. Fixing seat; 47. First connecting member;

[0044] 5. Unlocking mechanism; 51. Actuator; 52. Actuator; 521. Connecting rod; 522. Push-pull part; 53. Controller module; 54. Seat adjustment sensor; 55. Wiring harness. DETAILED DESCRIPTION

[0045] The present application will be further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0046] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0047] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the convenience of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.

[0048] One embodiment of the present application, such as Figures 1-10 As shown, a seat belt retractor with adaptive function includes: a frame assembly 1 and a belt-sensitive assembly 2, a vehicle-sensitive assembly 3, a mechanical end assembly 4, and an unlocking mechanism 5 installed on the same side of the frame assembly 1;

[0049] The frame assembly 1 includes a frame body 11 and a core shaft 12 mounted on the frame body 11. The mechanical end assembly 4 is arranged outside the frame body 11. The belt sensitive assembly 2 is mounted on the core shaft 12 and corresponds to the inner side of the mechanical end assembly 4.

[0050] The mechanical end assembly 4 includes a sleeve 41, a vehicle-sensitive mechanism rod 42, a locking device 43, a positioning cover 44 and an outer cover 45; the belt-sensitive assembly 2 is associated with the vehicle-sensitive assembly 3 through the vehicle-sensitive mechanism rod 42, and the vehicle-sensitive assembly 3 is also connected to the sleeve 41 at the end of the core shaft 12 through the locking device 43; the sleeve 41 is arranged at the end of the core shaft 12, and a first connecting member 47 is also provided on the outside of the sleeve 41, and the connecting key between the sleeve 41 and the first connecting member 47 is called the core shaft, and the locking device 43 moves with the core shaft; the positioning cover 44 is connected to the frame body 11 and is located between the belt-sensitive assembly 2 and the locking device 43. The positioning cover 44 is also provided with a first opening for passing the sleeve 41 and a second opening for the movement of the vehicle-sensitive mechanism rod 42; the outer cover 45 is connected to the frame body 11 and is located at the outermost part of the mechanical end assembly 4 and the vehicle-sensitive assembly 3, playing a sealing and protective role;

[0051] The unlocking mechanism 5 includes an actuator 51, an executive member 52, a controller module 53 and a seat adjustment sensor 54. One end of the executive member 52 is connected to the actuator 51, and the other end of the executive member 52 is associated with the locking device 43. The controller module 53 is connected to the actuator 51, so that the executive member 52 separates the locking device 43 from the vehicle-sensitive component 3 under the control of the actuator 51, thereby achieving unlocking.

[0052] Preferably, the unlocking mechanism 5 further includes a seat adjustment sensor 54 , which is connected to the controller module 53 .

[0053] Further preferably, the actuator 51 is connected to the controller module 53 through a wiring harness wire 55; the relationship between the seat adjustment sensor 54, the controller module 53 and the actuator 51 is: the output end of the seat adjustment sensor 54 is connected to the input end of the controller module 53, and the output end of the controller module 53 is connected to the input end of the actuator 51.

[0054] The function of the seat adjustment sensor 54 is to detect the adjustment signal of the seat back system, specifically, it can detect the change of the seat rotation angle, and send the signal to the controller module 53; the function of the controller module 53 is to receive the adjustment signal of the seat back adjustment, calculate the adjustment angle, detect the backrest stop signal, and output the instruction to the actuator 51; ① The program execution setting angle signal is adjustable to ensure that the signal is realized at least once within the backrest adjustment angle of 40°; ② The output instruction requires two actions of opening and closing; the function of the actuator 51 is to realize the execution of the driving action of the instruction received from the controller, and drive the actuator 52 to quickly generate displacement; the function of the actuator 52 is to make the locking device 43 quickly disengage from the vehicle sensitive component 3 under the drive of the actuator 51, realize unlocking, and quickly return to maintain the initial state of the next cycle.

[0055] Preferably, the vehicle-sensing component 3 is fixed to the outside of the frame body 11 through a fixing seat 46; a fixing claw 431 is provided at the end of the locking device 43;

[0056] The vehicle-sensitive component 3 includes a sensitive mechanism rod 31, one end of the sensitive mechanism rod 31 is connected to the vehicle-sensitive mechanism rod 42, and one end of the sensitive mechanism rod 31 is connected to the steel ball 32. The steel ball 32 is installed in the steel ball seat 33, and the steel ball seat 33 provides a rolling track for the steel ball 32. The steel ball seat 33 is provided with a counterweight block 34 and a tooth 331 engaged with the fixed claw 431.

[0057] Preferably, if Figures 7-9 As shown, the actuator 52 includes a connecting rod 521 connected to the actuator 51, the connecting rod 521 is connected to the push-pull part 522, the push-pull part 522 is a "U"-shaped structure, and the U-shaped groove position of the push-pull part 522 is used to cooperate with the middle position of the locking device 43, thereby ensuring that when the actuator 51 performs the driving action, the locking device 43 is effectively driven to move by the actuator 52, so that the fixing claw 431 at the end of the locking device 43 is separated from the tooth 331 on the steel ball seat 33, the locking state is released, and the adaptive function of the retractor is restored.

[0058] It should be noted that the specific structure of the actuator 52 is not limited and can be designed and adjusted according to actual needs, as long as it can achieve the function of driving the locking device 43 to disengage the vehicle-sensing component 3. For example, in other embodiments, the push-pull portion 522 can also be in the shape of a Chinese character "口" or other shapes.

[0059] Preferably, the actuator 51 is an actuating device such as an electromagnet, a motor, a hydraulic or pneumatic mechanism, etc. The specific type can be selected according to actual application requirements:

[0060] When the actuator 51 is a motor, the motor is connected to one end of the actuator 52 through a gear rack structure. Specifically, the output shaft of the motor is connected to the gear, and a rack is provided at one end of the actuator 52, which is connected to the gear through the rack.

[0061] When the actuator 51 is an electromagnet, one end of the actuator 52 is connected to the iron core of the electromagnet through a second connecting member, and the second connecting member ensures that the actuator 52 can move along with the iron core.

[0062] The present application also provides a car seat device, comprising: a seat and a safety belt SAMS retractor installed on the seat, wherein the safety belt SAMS retractor adopts the above-mentioned safety belt retractor with adaptive function.

[0063] The present application also provides a method for unlocking a seatbelt retractor with an adaptive function, using the aforementioned seatbelt retractor with an adaptive function; when the seat system adjusts the seatback to recline, the seat adjustment sensor 54 detects a seatback adjustment signal and sends the signal to the controller module 53. The controller module 53 determines whether the seatback adjustment angle exceeds a set value based on the received signal. If it is determined that the seatback adjustment angle changes each time the set value is reached or the angle change action stops, the controller module 53 controls the actuator 51 to operate and drives the actuator 52 to execute at least one operation command, thereby causing the actuator 52 to drive the locking device 43 to quickly disengage from the vehicle-sensing component 3, thereby releasing the locked state;

[0064] The specific steps include:

[0065] Step 1: In the initial state, the webbing is pulled out and the locking device 43 locks the vehicle-sensing component 3; specifically, the fixed claw 431 at the end of the locking device 43 and the teeth on the steel ball seat 33 are in a locked state;

[0066] Step 2: The seat adjustment sensor 54 detects seat back adjustment, specifically the rotation angle of the seat back retractor relative to the horizontal plane, and sends a signal to the controller module 53. The controller module 53 is configured to determine whether the seat back adjustment angle exceeds a set value based on the received signal. When the seat back is adjusted, the angle of the seat back retractor will change relative to the horizontal plane. Each time the angle change reaches the set value or the angle change stops, the controller module 53 controls the actuator 51 to operate.

[0067] Step 3: When the actuator 51 receives the instruction and executes the driving action, it drives the actuator 52 to quickly move and execute at least one operation command;

[0068] Step 4: The actuator 52 drives the locking device 43 to quickly disengage the vehicle-sensing component 3, and the locked state is released. Specifically, the push-pull portion 522 of the actuator 52 drives the fixing claw 431 to quickly disengage the teeth on the steel ball seat 33, so that the locked state between the two is released.

[0069] Step 5: After the locking device 43 is disengaged, the controller module 53 controls the actuator 51 to execute a reset instruction and quickly restore to the initial state to prepare for the next execution cycle.

[0070] The above-mentioned set value is specifically 40°, and every 40° or angle change stops as a cycle; when the seat back is adjusted in angle, the actuator 51 executes an operation command at least once every 40° rotation of the retractor relative to the horizontal plane, so that the unlocking device 43 is unlocked and reset at least once, so that when the zero-gravity seat adjusts its angle, the retractor can restore its adaptive function, thereby achieving normal operation.

[0071] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A seat belt retractor with adaptive function, characterized in that: include: A frame assembly and a belt-sensitive assembly, a vehicle-sensitive assembly, a mechanical end assembly, and an unlocking mechanism mounted on the same side of the frame assembly; the frame assembly includes a frame body and a core shaft mounted on the frame body, and the belt-sensitive assembly is mounted on the core shaft; The mechanical end assembly is arranged outside the frame body, and the mechanical end assembly includes a locking device and a vehicle-sensitive mechanism rod, the belt-sensitive assembly is associated with the vehicle-sensitive assembly through the vehicle-sensitive mechanism rod, and the vehicle-sensitive assembly is also connected to the shaft sleeve at the end of the core shaft through the locking device; The unlocking mechanism includes an actuator, an executive member and a controller module. One end of the executive member is connected to the actuator, and the other end of the executive member is associated with the locking device. The controller module is connected to the actuator so that the executive member separates the locking device from the vehicle-sensitive component under the control of the actuator.

2. The seat belt retractor with adaptive function according to claim 1, characterized in that: The actuator is connected to the controller module via a wiring harness; A seat adjustment sensor is also included, and the seat adjustment sensor is connected to the controller module.

3. The seat belt retractor with adaptive function according to claim 1, characterized in that: The actuator includes a connecting rod connected to the actuator, the connecting rod is connected to the push-pull portion, and the push-pull portion is used to cooperate with the middle position of the locking device.

4. The seat belt retractor with adaptive function according to claim 1, characterized in that: The actuator is a motor, and the motor is connected to one end of the actuator through a gear rack structure; Alternatively, the actuator is an electromagnet, and one end of the actuator is connected to the iron core of the electromagnet through a connecting member.

5. The seat belt retractor with adaptive function according to claim 1, characterized in that: The actuator is an electromagnet, a motor, a hydraulic mechanism or a pneumatic mechanism.

6. The seat belt retractor with adaptive function according to claim 1, characterized in that: The vehicle-sensing component is fixed to the outside of the frame body through a fixing seat; the end of the locking device is provided with a fixing claw; The vehicle-sensitive component includes a sensitive mechanism rod, one end of which is connected to the vehicle-sensitive mechanism rod, and one end of which is connected to a steel ball. The steel ball is installed in a steel ball seat, and the steel ball seat is provided with a counterweight block and teeth engaged with the fixed claw.

7. The seat belt retractor with adaptive function according to claim 1, characterized in that: The mechanical end assembly also includes the shaft sleeve, a first connecting piece is provided on the outside of the shaft sleeve, and the connecting key between the shaft sleeve and the first connecting piece is a core shaft, and the locking device moves with the core shaft.

8. A car seat device comprising: A seat and a safety belt SAMS retractor installed on the seat, characterized in that the safety belt SAMS retractor adopts the safety belt retractor with adaptive function described in any one of claims 1-7.

9. A method for unlocking a seat belt retractor with an adaptive function, characterized in that: The seat belt retractor with adaptive function according to any one of claims 1 to 7 is used; comprising the following steps: Step 1: In the initial state, the webbing is pulled out and the locking device locks the vehicle sensor component; Step 2: The seat adjustment sensor detects seat back adjustment and sends a seat back adjustment signal to the controller module. The controller module is configured to determine whether the seat back adjustment angle exceeds a set value based on the received signal. When the seat back is adjusted, the retractor installed on the seat back changes its angle relative to the horizontal plane. Each time the angle change reaches the set value or the angle change stops, the controller module controls the actuator to operate. Step 3: The actuator receives the command and executes the driving action, causing the actuator to quickly move and execute at least one operation command; Step 4: The actuator drives the locking device to quickly disengage from the vehicle-sensing component, and the locking state is released; Step 5: After the locking device is disengaged, the controller module controls the actuator to perform a reset action and quickly return to the initial state to prepare for the next execution cycle action.

10. The unlocking method of a seat belt retractor with adaptive function according to claim 9, characterized in that: The set value is 40°, and every 40° or angle change is stopped as one cycle.

Images