Seat and control method

Abstract

The invention provides a seat and a control method. Wherein the seat comprises a backrest part; the shoulder adjusting part is rotatably connected with the backrest part; the shoulder adjusting part comprises a shoulder adjusting frame and an electric control driving piece, and the electric control driving piece can drive the shoulder adjusting frame to rotate between a first rotating position and a second rotating position relative to the backrest part; the headrest part is configured to be located at an initial position or a release position and can move back and forth between the initial position and the release position.

Description

Technical Field

[0001] The present application relates to a seat and a control method. Background Art

[0002] Car headrests are a kind of driving comfort equipment and safety protection products, which provide certain support for the head and neck. One of the safety performance requirements for car seats is the performance of whiplash prevention. Neck whiplash refers to the neck injury suffered by the occupants in a low-speed rear-end collision. It is the most common type of occupant injury in all automobile traffic accidents, causing significant losses to the lives, property and social economy of the Chinese people. For this reason, the China National Vehicle Assessment Program (C-NCAP) officially introduced the "Low-speed Rear-impact Neck Protection Test (Whiplash Test)" in 2012 to measure the probability and severity of neck injuries of occupants in low-speed rear-end collisions, and evaluate the anti-whiplash performance of front seats and headrests.

[0003] For anti-whiplash performance, the closer the neck of the passenger is to the headrest, the better. However, this is not good for the comfort of the headrest. Usually, the headrest needs to maintain a certain distance (e.g., 30mm-50mm) from the passenger's head for better comfort.

[0004] Therefore, in the research, development and design of seats, there is a certain contradiction between the requirements for anti-whiplash performance and comfort.

[0005] Based on the above, the inventor invented a new seat and control method to overcome the above technical problems. Summary of the invention

[0006] The purpose of this application is to provide a seat.

[0007] The purpose of this application is to provide a seat control method.

[0008] A seat according to the first aspect of the present application comprises a backrest portion; a shoulder adjustment portion rotatably connected to the backrest portion; the shoulder adjustment portion comprises a shoulder adjustment frame and an electrically controlled drive component, the electrically controlled drive component being capable of driving the shoulder adjustment frame to rotate relative to the backrest portion between a first rotation position and a second rotation position; and a headrest portion, the headrest portion being configured to be located in an initial position or a release position and being capable of moving back and forth between the initial position and the release position; wherein the seat is configured to have a first state, a second state, and a third state; when the seat is in the first state, the headrest portion is located in the initial position, and the shoulder adjustment portion is located in the first rotation position the first state rotation position of any rotation position between the first state and the second rotation position; when the seat is in the second state, the headrest portion is located at the initial position, the shoulder adjustment portion is located at the second state rotation position, and the second state rotation position is located in front of the first state rotation position; when the seat is in the third state, the headrest portion is located at the release position, the shoulder adjustment portion is located at the third state rotation position, and the third state rotation position is located in front of or the same as the second state rotation position; wherein the probability of a whiplash injury incident occurring in a vehicle where the seats corresponding to the first state, the second state, and the third state are located is first state < second state < third state.

[0009] The technical solution of the above seat, through the synergistic effect of the shoulder adjustment part and the headrest part, and the different probabilities of whiplash incidents in the vehicles, makes the distance between the headrest part and the head of the occupant meet the comfort requirements first when the probability of the incident is low, and adjusts the rotation position of the shoulder adjustment part according to the increased probability of whiplash incidents so that the head is close to the headrest to meet the safety performance requirements of the seat's anti-whiplash injury. In this way, the seemingly contradictory requirements of comfort and anti-whiplash injury performance are met at the same time.

[0010] In one or more embodiments of the seat, the electrically controlled drive member is a motor, and the shoulder adjustment frame pivots around an output shaft of the motor so that the shoulder adjustment frame rotates relative to the backrest portion between a first rotation position and a second rotation position.

[0011] In one or more embodiments of the seat, the headrest portion comprises a headrest frame, which is mounted on the shoulder adjustment frame and can move back and forth between an initial position and a release position relative to the shoulder adjustment frame.

[0012] In one or more embodiments of the seat, the headrest frame includes a slide rail portion fixed to the shoulder adjustment frame, and a slider portion moving relative to the slide rail portion, and the headrest frame moves back and forth between an initial position and a release position by sliding the slider portion relative to the slide rail portion.

[0013] In one or more embodiments of the seat, the headrest portion includes a fixed steel wire, a hook portion, and an elastic member, the hook portion is located on the sliding portion, and in the initial position, the hook portion cooperates and locks with the fixed steel wire so that the sliding portion is located in the initial position and the elastic member accumulates elastic force; when the fixed steel wire is unlocked from the hook portion, the elastic force of the elastic member is released, and the sliding portion is driven to the release position.

[0014] In one or more embodiments of the seat, the headrest portion and the shoulder adjustment portion are both arranged on the backrest portion.

[0015] In one or more embodiments of the seat, a sensor is further included, which is arranged on the headrest portion and is used to sense the distance between the headrest portion and the user's head.

[0016] According to a seat control method according to the second aspect of the present application, the seat described in the first aspect is adopted, and the control method includes: the seat receives a signal of the probability of a whiplash injury incident occurring in the vehicle, if the probability is less than a first threshold, the seat is configured to a first state; if the probability is less than a second threshold but above the first threshold, the seat is configured to a second state; if the probability is above the second threshold, the seat is configured to a third state.

[0017] In one or more embodiments of the control method, the seat has a passenger's preference for a first-state rotational position of the shoulder adjustment portion when the seat is in the first state, and when the seat recognizes the passenger as the passenger, the shoulder adjustment portion is automatically adjusted to the preferred first-state rotational position.

[0018] In one or more embodiments of the control method, the vehicle whiplash event is a vehicle rear-end collision event.

[0019] The beneficial effect of the above seat control method technical solution is that it simultaneously meets the requirements of the seat's anti-whiplash performance and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other features, properties and advantages of the present application will become more apparent through the following description in conjunction with the accompanying drawings and embodiments. In the accompanying drawings, the same reference numerals always represent the same features. It should be noted that these drawings are only examples and are not drawn in proportion. They should not be used to limit the actual scope of protection claimed in the present application. Among them:

[0021] Figure 1 It is a structural schematic diagram of a seat in an embodiment in which the headrest portion is located at an initial position and the shoulder adjustment portion is located at a first rotation position;

[0022] Figure 2 It is a structural schematic diagram of a seat in an embodiment in which the headrest portion is located in a release position and the shoulder adjustment portion is located in a first rotation position;

[0023] Figure 3 is a schematic diagram of an exploded view of a headrest portion of a seat according to an embodiment;

[0024] Figure 4 It is a schematic diagram of the exploded components of the shoulder adjustment part of a seat according to an embodiment;

[0025] Figure 5A It is a structural schematic diagram of a seat in an embodiment in which the headrest portion is located at an initial position and the shoulder adjustment portion is located at a first rotation position;

[0026] Figure 5B It is a structural schematic diagram of a seat in an embodiment in which the headrest portion is located at an initial position and the shoulder adjustment portion is located at a second rotation position;

[0027] Figure 5C A schematic structural diagram of a seat in an embodiment in which a headrest portion is located at a release position and a shoulder adjustment portion is located at any rotation position between a first rotation position and a second rotation position;

[0028] Figure 5D It is a structural schematic diagram of a seat in an embodiment in which the headrest portion is located in a release position and the shoulder adjustment portion is located in a first rotation position;

[0029] Figure 5E It is a structural schematic diagram of a seat in an embodiment in which the headrest portion is located in a release position and the shoulder adjustment portion is located in a second rotation position;

[0030] Figure 6 A schematic flow chart of a seat control method according to an embodiment;

[0031] Figure 7 FIG. 4 is a flow chart of a seat control method according to another embodiment.

[0032] Reference numerals:

[0033] 100-seats

[0034] 1-Backrest

[0035] 2- Shoulder adjustment

[0036] 21-Shoulder adjustment frame

[0037] 22-Electronic drive components

[0038] 221-Output shaft

[0039] 201-First rotation position

[0040] 202-Second rotation position

[0041] 3-Headrest

[0042] 31-Headrest frame

[0043] 311-Slide rail

[0044] 312-Slider

[0045] 32-Fixed wire

[0046] 33-Hook

[0047] 34-Elastic parts

[0048] 301-initial position

[0049] 302-Release location. DETAILED DESCRIPTION

[0050] Reference will now be made in detail to the various embodiments of the application, the examples of which are shown in the accompanying drawings and are described below. Although the application will be described in conjunction with the exemplary embodiments, it should be appreciated that this specification is not intended to limit the application to those exemplary embodiments. On the contrary, the application is intended to not only cover these exemplary embodiments, but also to cover various alternative forms, modified forms, equivalent forms and other embodiments that may be included in the spirit and scope of the application defined by the appended claims.

[0051] In the subsequent description, the orientation or position relationship indicated by "longitudinal", "lateral", "upper", "lower" or other directional terms is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0052] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment" and / or "an embodiment" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0053] The seat and control method described in the following embodiments take a car seat as an example to achieve the effect of taking into account both anti-whiplash performance and comfort, but are not limited thereto, and can be applied to other transportation applications, such as engineering machinery, railway trains, ships, airplanes, etc. As long as there is a seat that needs to take into account both anti-whiplash performance and comfort requirements, the technical solution described in the following embodiments can be used.

[0054] refer to Figures 1 to 5E As shown, in one embodiment, the seat 100 includes a backrest portion 1, a shoulder adjustment portion 2, and a headrest portion 3. Figure 1 , Figure 2 as well as Figure 4 As shown, the shoulder adjustment part 2 is rotatably connected to the backrest part 1; the shoulder adjustment part 2 includes a shoulder adjustment frame 21 and an electric control drive 22, and the electric control drive 22 can drive the shoulder adjustment frame 21 to rotate between a first rotation position 201 and a second rotation position 202 relative to the backrest part 1.

[0055] refer to Figure 1 , Figure 2 as well as Figure 3 As shown, the headrest portion 3 is configured to be located at an initial position 301 or a release position 302 , and can move back and forth between the initial position 301 and the release position 302 .

[0056] refer to FIG. 5A to FIG. 5E As shown, the seat 100 is configured to have a first state, a second state, and a third state.

[0057] When the seat 100 is in the first state, the headrest portion 3 is located at the initial position 301 , and the shoulder adjustment portion 2 is located at the first state rotation position which is any rotation position between the first rotation position 201 and the second rotation position 202 .

[0058] When the seat 100 is in the second state, the headrest portion 3 is located at the initial position 301 , and the shoulder adjustment portion 2 is located at the second state rotation position, which is located forward of the first state rotation position.

[0059] When the seat 100 is in the third state, the headrest portion 3 is located at the release position 302 , and the shoulder adjustment portion 2 is located at the third state rotation position, which is located in front of or the same as the second state rotation position.

[0060] It can be understood that, as shown in the figure, the first rotation position 201 is the frontmost rotation position of the shoulder adjustment part 2 , and the second rotation position 202 is the rearmost rotation position of the shoulder adjustment part 2 .

[0061] It can be understood that the first state and the second state are relative. Figure 5A , Figure 5B The status shown, Figure 5B The status shown is relative to Figure 5A The state of is the second state relative to the first state, but assuming Figure 5C The headrest portion shown is in the initial position 301, and the corresponding shoulder adjustment portion is located at any rotation position between the first rotation position and the second rotation position. Figure 5A In the second state, Figure 5A is in the first state, and this state is relative to Figure 5B It is in the first state. Figure 5B In the second state, because Figure 5B The rotation position of the shoulder adjustment part 2 is located in front of it.

[0062] Among them, the probability of a whiplash injury incident occurring in the vehicle where the seat 100 is located corresponding to the first state, the second state, and the third state is first state < second state < third state.

[0063] In this way, a seat state adjustment based on a whiplash event is formed. For example, when the probability of occurrence is less than the first threshold, that is, the system determines that the probability of a whiplash event is small, then comfort is prioritized at this time, and the shoulder adjustment portion 2 can be adjusted by the occupant to the first state rotation position of any rotation position between the first rotation position 201 and the second rotation position 202, so that the distance between the headrest portion 3 and the occupant's head meets the optimal distance for comfort. When the system determines that the probability is less than the second threshold, but is above the first threshold, that is, there is a certain possibility of a whiplash accident, the system will make preventive adjustments at this time, adjusting the shoulder adjustment portion 2 to a more forward position, so that the distance between the headrest portion 3 and the occupant's head is closer. If the probability is above the second threshold, it means that there is a high probability that a whiplash event will occur in a short time, and the headrest portion 3 is released in time and is in the released position, so that the distance between the headrest portion and the head is as short as possible, and the shoulder adjustment portion 2 is adjusted to a more forward position than the second state at this time. Of course, if it has been adjusted to the frontmost position in the second state, that is, the second rotation position, then the position of the shoulder adjustment portion 2 remains unchanged at this time. FIG. 5C to FIG. 5EAs shown, it can be understood that the ideal state is that when the headrest part 3 is in the release position, the shoulder adjustment part 2 is in Figure 5D The first rotation position shown in the figure is the shortest whiplash distance from the head to the headrest. However, since whiplash injuries usually occur in an instant, such as a rear-end collision, it is not excluded that the whiplash injury may occur in the first rotation position. Figure 5C , Figure 5E It can be understood that, for the headrest portion 3, since whiplash injury is generally an instantaneous event, the headrest portion 3 has only two positions for an actual user, namely, an initial position 301 and a release position 302, unlike the shoulder adjustment portion 2 which can generally be a first rotation position 201, a second rotation position 202, and any rotation position therebetween.

[0064] In this way, the shoulder adjustment part and the headrest part cooperate with each other, and the different probabilities of whiplash incidents in the vehicles are realized. When the probability of whiplash incidents is low, the distance between the headrest part and the head of the occupant is adjusted by the rotation position of the shoulder adjustment part, so that the head is closer to the headrest according to the increased probability of whiplash incidents, so as to meet the safety performance requirements of the seat's whiplash prevention. In this way, the seemingly contradictory requirements of comfort and whiplash prevention performance are met at the same time.

[0065] Continue to refer Figure 4 As shown, the specific structure of the shoulder adjustment part 2 can be that, in some embodiments, the electric control driving member 22 is a motor, and the shoulder adjustment frame 21 pivots around the output shaft 221 of the motor, so that the shoulder adjustment frame 21 rotates between the first rotation position 201 and the second rotation position 202 relative to the backrest 1. This is easy to control and has a compact structure. It can be understood that the driving member is not limited to the motor, for example, it can also be a driving member such as a cylinder, a hydraulic cylinder, etc.

[0066] Continue to refer Figures 1 to 3 As shown, the installation position of the headrest portion 3 can be, the headrest portion 3 includes a headrest frame 31, the headrest frame 31 is installed on the shoulder adjustment frame 21, and can move back and forth between an initial position 301 and a release position 302 relative to the shoulder adjustment frame 21. In this way, the structure of the seat is further compact, and the shoulder adjustment portion and the headrest portion are easier to be adjusted in linkage.

[0067] Preferably, reference Figures 1 to 3As shown, in some embodiments, the structure for realizing the movement of the headrest frame 31 may be that the headrest frame 31 includes a rail portion 311 fixed to the shoulder adjustment frame 21, and a slider portion 312 that moves relative to the rail portion 311, and the headrest frame 31 moves back and forth between the initial position 301 and the release position 302 by the slider portion 312 sliding relative to the rail portion 311. Such a moving structure is relatively smooth and easy to control and recover from the release position to the initial position.

[0068] Preferably, reference Figure 1 , Figure 2 as well as Figure 3 As shown, in some embodiments, the structure for switching the headrest 3 between the initial position 301 and the release position 302 may be that the headrest 3 includes a fixed steel wire 32, a hook 33, and an elastic member 34, wherein the hook 33 is located at the slider 312, and at the initial position 301, the hook 33 cooperates with the fixed steel wire 32 to lock, so that the slider 312 is located at the initial position 301, and the elastic member 34 accumulates elastic force; when the fixed steel wire 32 is unlocked from the hook 33, the elastic force of the elastic member 34 is released, and the slider 312 is driven to the release position 302. The structure of the elastic member, the hook and the steel wire is easy to control and has good structural reliability.

[0069] Preferably, the seat 100 may further include a sensor, which is disposed on the headrest portion 3, for sensing the distance between the headrest portion 3 and the user's head. In this way, the shoulder adjustment portion can be automatically rotated in the first state, the second state, and the third state according to the distance data to adjust the distance, so that the seat meets the requirements of comfort and anti-whiplash performance.

[0070] Continue to refer Figures 1 to 4 As shown, the headrest portion 3 and the shoulder adjustment portion 2 can both be disposed on the backrest portion 1 , thus making the structure of the seat 100 more compact.

[0071] The following flowchart is used to illustrate the operations performed according to the seat control method. It should be understood that, depending on the actual situation, the previous or following operations are not necessarily performed in exact order. Other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0072] In some embodiments, reference is made to Figure 6 As shown, the present application also provides a method for controlling a seat, wherein the seat is the seat 100 described in the above embodiment. The method for controlling the seat includes:

[0073] The seat 100 receives a signal indicating the probability of a whiplash event occurring in the vehicle, and if the probability is less than a first threshold, the seat 100 is configured to a first state;

[0074] If the probability is less than the second threshold but above the first threshold, the seat 100 is configured in the second state;

[0075] If the probability is above the second threshold, the seat 100 is configured in the third state.

[0076] Preferably, the control method may further include that the seat has a preference of a passenger for the first state rotation position of the shoulder adjustment part 2 in the first state, and when the seat recognizes that the passenger is the passenger, the shoulder adjustment part 2 is automatically adjusted to the preferred first state rotation position. That is, the vehicle can recognize its common passengers, for example, as a family car, it can recognize the preferences of the family passengers for seat comfort, that is, the preferences of the first state rotation position of the shoulder adjustment part 2 in the first state, and when the vehicle recognizes that the passenger is the family passenger, the shoulder adjustment part 2 is automatically adjusted to the preferred first state rotation position, thereby eliminating the manual adjustment step and further improving comfort.

[0077] refer to Figure 7 As shown, for whiplash injuries caused by rear-end collisions, the Figure 7 According to the flowchart shown, the states in the steps before "determining whether the required acceleration exceeds the acceleration limit of the vehicle" can be regarded as having a probability less than the first threshold, and the seat 100 is configured as the first state; if "determining whether the required acceleration exceeds the acceleration limit of the vehicle" is yes, it can be regarded as if the probability is less than the second threshold, and if it is above the first threshold, it is configured as the second state, and the shoulder adjustment part is appropriately advanced. If "the lane change has been completed" is yes, it can be regarded as having a probability less than the first threshold, and the seat 100 is configured as the first state. If "the lane change has been completed" is no, it can be regarded as having a probability above the second threshold, and the seat 100 is configured as the third state.

[0078] In summary, the beneficial effects of the seat and control method described in the above embodiments include, but are not limited to, through the synergistic effect of the shoulder adjustment part and the headrest part, and the different probabilities corresponding to the occurrence of whiplash events in the vehicle, the rotation position of the shoulder adjustment part makes the distance between the headrest part and the head of the occupant preferentially meet the comfort requirements when the probability of the event is low, and the rotation position of the shoulder adjustment part is adjusted according to the increased probability of the occurrence of whiplash events so that the head is close to the headrest to meet the safety performance requirements of the seat's anti-whiplash injury. In this way, the seemingly contradictory requirements of comfort and anti-whiplash injury performance are met at the same time.

[0079] Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application, and any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application shall fall within the scope of protection defined by the claims of the present application.

Claims

1. A seat (100), comprising: Backrest (1); A shoulder adjustment portion (2) rotatably connected to the backrest portion (1); The shoulder adjustment portion (2) comprises a shoulder adjustment frame (21) and an electrically controlled drive member (22), wherein the electrically controlled drive member (22) is capable of driving the shoulder adjustment frame (21) to rotate relative to the backrest portion (1) between a first rotation position (201) and a second rotation position (202); as well as A headrest portion (3), wherein the headrest portion (3) is configured to be located at an initial position (301) or a release position (302), and is capable of moving back and forth between the initial position (301) and the release position (302); Wherein, the seat (100) is configured to have a first state, a second state, and a third state; When the seat (100) is in the first state, the headrest portion (3) is located at the initial position (301), and the shoulder adjustment portion (2) is located at a first state rotation position of any rotation position between the first rotation position (201) and the second rotation position (202); When the seat (100) is in the second state, the headrest portion (3) is located at the initial position (301), the shoulder adjustment portion (2) is located at the second state rotation position, and the second state rotation position is located in front of the first state rotation position; When the seat (100) is in the third state, the headrest portion (3) is located at the release position (302), and the shoulder adjustment portion (2) is located at the third state rotation position, and the third state rotation position is located in front of or the same as the second state rotation position; The probability of a whiplash injury occurring in a vehicle in which the seat (100) corresponding to the first state, the second state, and the third state is located is: first state < second state < third state.

2. The seat (100) according to claim 1, characterized in that: The electrically controlled drive member (22) is a motor, and the shoulder adjustment frame (21) pivots around an output shaft (221) of the motor, so that the shoulder adjustment frame (21) rotates relative to the backrest portion (1) between a first rotation position (201) and a second rotation position (202).

3. The seat (100) according to claim 1, characterized in that: The headrest portion (3) comprises a headrest frame (31), which is mounted on the shoulder adjustment frame (21) and can move back and forth between an initial position (301) and a release position (302) relative to the shoulder adjustment frame (21).

4. The seat (100) according to claim 3, characterized in that: The headrest frame (31) comprises a slide rail portion (311) fixed to the shoulder adjustment frame (21), and a slider portion (312) that moves relative to the slide rail portion (311); the headrest frame (31) moves back and forth between an initial position (301) and a release position (302) by the slider portion (312) sliding relative to the slide rail portion (311).

5. The seat (100) according to claim 4, characterized in that: The headrest portion (3) comprises a fixing steel wire (32), a hook portion (33), and an elastic member (34); the hook portion (33) is located on the slider portion (312); in the initial position (301), the hook portion (33) cooperates with and locks with the fixing steel wire (32), so that the slider portion (312) is located in the initial position (301), and the elastic member (34) accumulates elastic force; when the fixing steel wire (32) is unlocked from the hook portion (33), the elastic force of the elastic member (34) is released, and the slider portion (312) is driven to the release position (302).

6. The seat (100) according to claim 3, characterized in that: The headrest portion (3) and the shoulder adjustment portion (2) are both arranged on the backrest portion (1).

7. The seat (100) according to claim 1, characterized in that: It also comprises a sensor, which is arranged on the headrest portion (3) and is used to sense the distance between the headrest portion (3) and the user's head.

8. A seat control method, characterized in that: Using the seat (100) according to any one of claims 1 to 7, the control method comprises: The seat receives a signal indicating a probability of a whiplash event occurring in the vehicle, and if the probability is less than a first threshold, the seat is configured to a first state; If the probability is less than a second threshold but above a first threshold, the seat is configured in a second state; If the probability is above a second threshold, the seat is configured in a third state.

9. The control method according to claim 8, characterized in that: The seat has a passenger's preference for a first state rotational position of the shoulder adjustment portion (2) when the passenger is in the first state, and when the seat recognizes the passenger as the passenger, the shoulder adjustment portion (2) is automatically adjusted to the preferred first state rotational position.

10. The control method according to claim 8, characterized in that: The whiplash injury incident in the vehicle was a vehicle rear-end collision incident.

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