Automobile seat and vehicle

Abstract

The application relates to an automobile seat and a vehicle. The automobile seat comprises a seat part and a backrest part; the seat part and the backrest part are pivotally connected; the backrest part comprises an opening part on one side facing the seat part; the automobile seat further comprises a gas charging and discharging device and an air bag. The gas charging and discharging device is arranged in the backrest part; the air bag is accommodated in the opening part; the air bag comprises a connecting end and a free end; the air bag is connected with the gas charging and discharging device to realize gas charging and discharging of the air bag; when the air bag is inflated, the free end can be exposed from the opening part to fill a recess at the pivot joint of the seat part and the backrest part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an automobile seat and a vehicle. BACKGROUND

[0002] The increasingly rich functions of vehicles make vehicles no longer just serve as people's means of transportation. Nowadays, more and more people choose to take a nap in the vehicle during work breaks. People hope that vehicles can provide a comfortable resting space, so as to improve the quality of rest.

[0003] Due to the structure of the vehicle seat, there is a depression at the transition between the backrest and the cushion, so that the seat cannot provide a high comfort feeling for people when they sit or rest. SUMMARY

[0004] The present application provides an automobile seat and a vehicle to solve some or all of the deficiencies in the related art.

[0005] The first aspect of the present application provides an automobile seat, comprising a seat part and a backrest part; the seat part and the backrest part are pivotally connected; the backrest part comprises an opening part on the side facing the seat part; the automobile seat further comprises a gas charging and discharging device and an air bag; the gas charging and discharging device is arranged inside the backrest part; the air bag is contained in the opening part; the air bag comprises a connecting end and a free end; the air bag is connected with the gas charging and discharging device to realize the inflation and deflation of the air bag; when the air bag is inflated, the free end can be exposed from the opening part to fill the depression at the pivot joint of the seat part and the backrest part.

[0006] Further, the automobile seat further comprises a flow sensor connected with the gas charging and discharging device, for detecting the inflation amount of the air bag.

[0007] Further, the automobile seat further comprises a flow memory module and a control module; the flow sensor is used to send the inflation amount to the flow memory module; the flow memory module is used to form a memory signal according to the inflation amount and send the memory signal; the control module is used to receive the memory signal and control the gas charging and discharging device to inflate the air bag to the memorized inflation amount.

[0008] Further, the automobile seat further comprises a flow controller connected with the gas charging and discharging device, for controlling the flow of the gas charging and discharging device.

[0009] Further, the automobile seat further comprises a gas pressure detector connected with the air bag, for detecting the gas pressure of the air bag.

[0010] Further, the airbag is arranged to be wedge-shaped in a plane perpendicular to the pivot axis of the seat part and the back part in the inflated state, and the thickness of the airbag decreases from the connection end towards the free end.

[0011] Further, the seat part comprises a bottom surface away from the back part; the airbag is arranged to be parallel to the bottom surface away from one side of the seat part and the back part.

[0012] Further, the automobile seat further comprises a winding device comprising a winding shaft and a winding motor for driving the winding shaft to rotate; the winding device is arranged inside the back part; the connection end is connected to the winding shaft; the winding motor is capable of driving the winding shaft to rotate, so that the airbag can be wound on the winding shaft and retracted into the opening part.

[0013] Further, the winding motor comprises a winding driving gear; the winding shaft is provided with a winding driven gear matched with the winding driving gear; the diameter of the winding driven gear is greater than the diameter of the winding driving gear.

[0014] Further, the automobile seat further comprises an exhaust device comprising a first exhaust shaft and a second exhaust shaft arranged in parallel; the exhaust device is arranged between the opening part and the winding device, and the airbag is arranged in the gap between the first exhaust shaft and the second exhaust shaft.

[0015] Further, the exhaust device comprises an exhaust motor; the exhaust motor is capable of driving the first exhaust shaft and the second exhaust shaft to rotate.

[0016] Further, the exhaust device further comprises a driving member and a driven member; the exhaust motor drives the driving member to rotate; the driving member drives the first exhaust shaft to rotate; the driving member cooperates with the driven member to drive the driven member to drive the second exhaust shaft to rotate in the opposite direction of the first exhaust shaft.

[0017] Further, the driving member comprises an exhaust driving gear; the exhaust motor drives the exhaust driving gear to rotate; the first exhaust shaft comprises a first shaft gear; the first shaft gear and the first shaft gear are matched through direct engagement or belt structure.

[0018] Further, the driven member comprises an exhaust driven gear; the exhaust driven gear is engaged with the exhaust driving gear; the second exhaust shaft comprises a second shaft gear; the exhaust driven gear and the second shaft gear are matched through direct engagement or belt structure.

[0019] Further, the air exhaust device comprises a housing; the first air exhaust shaft and the second air exhaust shaft are connected with the housing; the housing comprises an inlet towards the free end and an outlet towards the connecting end; the width of the inlet decreases in the direction from the inlet towards the outlet.

[0020] Further, the air exhaust device further comprises a bearing; the bearing is arranged between the first air exhaust shaft and the housing and / or between the second air exhaust shaft and the housing.

[0021] Further, the air charging and discharging device comprises an air charging pipe; the air charging pipe is connected with the air bag to realize air charging and discharging of the air bag.

[0022] Further, the seat part further comprises a seat body and a leg support structure; the seat body is pivotally connected with the backrest part; the leg support structure is arranged at an end of the seat body away from the backrest part and is pivotally connected with the seat body.

[0023] The second aspect of the present application provides a vehicle comprising the automobile seat described in the foregoing embodiments.

[0024] Further, the vehicle comprises a front end and a rear end; the automobile seat comprises a first automobile seat and a second automobile seat; the first automobile seat and the second automobile seat are arranged in a direction from the front end to the rear end; wherein the backrest part of the first automobile seat can be pivoted to be connected with the seat part of the second seat.

[0025] The technical scheme provided by the embodiments of the present application can have the following beneficial effects:

[0026] As can be seen from the above embodiments, the air bag of the present application can extend the opening part to fill the recess between the seat part and the backrest part when the pivoting angle between the seat part and the backrest part increases. The arrangement of the air bag can make the automobile seat have a flat seating surface in the rest mode and the flat mode to provide passengers with a place to rest and sit, which is conducive to improving the seating comfort of the automobile seat and the seating experience of the passengers.

[0027] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 schematic view of the vehicle seat of the present application shown in a reclined position.

[0030] Figure 2 schematic view of the vehicle seat of the present application shown in a reclined position. Figure 1 schematic view of the vehicle seat of the present application shown in a reclined position.

[0031] Figure 3 schematic view of the vehicle seat of the present application shown in a reclined position. Figure 2 schematic view of the vehicle seat of the present application shown in a reclined position.

[0032] Figure 4 schematic view of the vehicle seat of the present application shown in a reclined position.

[0033] Figure 5 schematic view of the vehicle seat of the present application shown in a reclined position.

[0034] Figure 6 schematic view of the vehicle seat of the present application shown in a reclined position.

[0035] Figure 7 schematic view of the vehicle seat of the present application shown in a reclined position.

[0036] wherein, 100 vehicle seat, 1 seat part, 11 seat body, 12 leg rest structure, 13 bottom surface, 2 backrest part, 21 opening part, 22 backrest body, 23 headrest, 3 inflation / deflation device, 31 inflation tube, 4 airbag, 41 connection end, 42 free end, 5 retraction device, 51 retraction spool, 511 retraction driven gear, 52 retraction motor, 521 retraction drive gear, 6 deflation device, 61 first deflation shaft, 611 first shaft gear, 62 second deflation shaft, 621 second shaft gear, 63 deflation motor, 64 driver, 641 deflation drive gear, 65 follower, 651 deflation driven gear, 66 housing, 661 inlet, 662 outlet, 67 bearing. DETAILED DESCRIPTION

[0037] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to all alternative embodiments, as would be understood by persons skilled in the art. The following exemplary embodiments are described herein with reference to the figures. Wherever possible, the same reference numbers are used in the drawings and the following description to describe the same or similar elements, features and aspects. The exemplary embodiments described herein are not meant to be limiting. It is contemplated that the exemplary embodiments can be carried out in various ways, embodying in or otherwise using the several details, the many implementations other than those noted. Accordingly, other embodiments are within the scope of the following claims.

[0038] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are only used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one, which will be separately stated if only "a" is referred to. "A plurality" or "several" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms “connection” or “link” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0039] refer to Figures 1-3 This application provides a vehicle including a car seat 100. For the sake of brevity and clarity, this application refers to the angle between the backrest 2 and the seat part 1 of the car seat 100 being between 90 and 110 degrees as the upright sitting mode of the car seat 100, the angle between the backrest 2 and the seat part 1 being between 110 and 160 degrees as the reclining mode of the car seat 100, and the angle between the backrest 2 and the seat part 1 being between 160 and 180 degrees as the lying mode of the car seat 100.

[0040] The car seat 100 includes a seat portion 1 and a backrest 2. The seat portion 1 and the backrest 2 are pivotally connected, thereby allowing adjustment of the angle between the backrest 2 and the seat portion 1. The car seat 100 of this application also includes an inflation / deflation device 3 and an airbag 4. The inflation / deflation device 3 is disposed inside the backrest 2. The backrest 2 includes an opening 21 facing the seat portion 1, and the airbag 4 is accommodated in the opening 21. The airbag 4 includes a connecting end 41 and a free end 42. The airbag 4 is connected to the inflation / deflation device 3 to realize the inflation and deflation of the airbag 4. When the airbag 4 is inflated, the free end 42 can be exposed from the opening 21 to fill the depression at the pivot joint between the seat portion 1 and the backrest 2.

[0041] like Figure 1 As shown, the angle between the seat section 1 and the backrest 2 is approximately 90 degrees, indicating an upright sitting mode. In this mode, passengers can engage in normal driving and riding activities, and the opening 21 is closed by the seat section 1. Figure 2 As shown, the passenger adjusts the angle between the backrest 2 and the seat 1, putting the car seat 100 into a nap mode. In this mode, the passenger can lie comfortably on the car seat 100, and the opening 21 of the seat 1 is exposed. Due to the structural limitations of the car seat 100, there is an uneven recess between the backrest 2 and the seat 1 in both nap and reclining modes, affecting the passenger's napping experience. Figure 3 As shown, the inflation / deflation device 3 inflates the airbag 4, increasing the volume of the airbag 4 and extending the free end 42 from the opening 21, thereby filling the recessed area between the backrest 2 and the seat 1.

[0042] With this configuration, when the pivot angle between the seat section 1 and the backrest 2 increases, the airbag 4 can extend its opening 21 to fill the recess between the seat section 1 and the backrest 2. Therefore, the airbag 4 provides a flat seating surface for passengers to rest and sit in both nap and recline modes, thus improving the seating comfort of the car seat 100 and the passenger's riding experience.

[0043] The inflation / deflation device 3 can inflate the airbag 4 at the free end 42, at the connecting end 41, or at any position of the airbag 4; this application is not limited in this respect. Furthermore, the inflation / deflation device 3 can have an inflation / deflation port (not shown) directly connected to the airbag 4, thereby simplifying the structure. Or, as... Figure 6 As shown, the inflation / deflation device 3 may include an inflation tube 31. The inflation tube 31 is connected to the airbag 4 to inflate and deflate the airbag 4. The inflation tube 31 allows the airbag 4 and the inflation / deflation device 3 to be positioned far apart from each other, thus making the placement of the airbag 4 and the inflation / deflation device 3 more flexible and making full use of the space inside the car seat 100.

[0044] It should be noted that a vehicle may include multiple seats, and some of the seats may be the car seat 100 of this application, or all of the seats may be the car seat 100 of this application. This application does not limit this.

[0045] To ensure that airbag 4 can fill the recessed area as much as possible, refer to Figure 3In some embodiments, the airbag 4 is arranged to be wedge-shaped in the inflated state and in a plane perpendicular to the pivot axis of the seat part 1 and the backrest part 2, and the thickness of the airbag 4 decreases from the connection end 41 towards the free end 42. The airbag 4 is arranged to be wedge-shaped and the thickness decreases from the connection end 41 towards the free end 42, as shown in Figure 3 illustrated, the transition between the airbag 4 and the seat part 1 can be well implemented so that there is no step between the airbag 4 and the seat part 1 to affect use.

[0046] Further, the seat part 1 includes a bottom surface 13 away from the backrest part 2. In some embodiments, the airbag 4 is arranged to be parallel to the bottom surface 13 on the side away from the seat part 1 and the backrest part 2. When the car seat 100 is installed in a vehicle, the bottom surface 13 is connected to the bottom of the vehicle. Therefore, the wedge-shaped airbag 4 is arranged to be parallel to the bottom surface 13, which is actually parallel to the bottom of the vehicle. Referring to Figure 4 When the passenger fully reclines the backrest part 2 to be parallel to the bottom, the airbag 4 is also parallel to the bottom. In this way, the airbag 4 can fill the recessed position between the backrest part 2 and the seat part 1, and can also fill the recessed position to a surface parallel to the bottom surface 13, so that the car seat 100 in the flat lying mode can provide a larger and flatter lying surface for the passenger, improving the lying comfort of the passenger.

[0047] Indeed, in other embodiments, the airbag 4 can also be arranged to be other shapes, such as triangular, semicircular, irregular, etc. Those skilled in the art can select according to the recessed shape between the seat part 1 and the backrest part 2, or the passenger can also select according to his own preferences, which is not limited in this application.

[0048] Referring to Figure 4 , the vehicle can include a plurality of car seats 100. For the sake of clarity and brevity, the plurality of car seats 100 are referred to as a first car seat and a second car seat. The first car seat and the second car seat are arranged in a direction from the front of the vehicle to the rear of the vehicle, that is, in a front-to-rear arrangement. Among them, the backrest part 2 of the first car seat can be pivoted to be connected to the seat part 1 of the second car seat. This arrangement allows the first car seat in the front row to be connected to the seat part 1 of the second car seat in the rear row when the backrest part 2 is fully reclined. Therefore, the passenger can rest and relax on a larger surface. When the backrest part 2 of the second car seat is also fully reclined, the first car seat and the second car seat form a complete plane, so that the passenger can lie flat in the vehicle for better rest. Subsequent passengers can further arrange a mattress above the car seat 100. The arrangement of the airbag 4 can avoid the discomfort of the passenger caused by the recessed position, and even the problem of sprain caused by accidentally stepping into the recessed position.

[0049] The seat part 1 can include a seat body 11 and a leg rest structure 12. The seat body 11 is pivotally connected with the back part 2. The leg rest structure 12 is arranged at an end of the seat body 11 away from the back part 2 and is pivotally connected with the seat body 11. The leg rest structure 12 can be raised to lift the legs of the passenger and achieve leg stretching, thereby improving the comfort of the car seat 100. In the above embodiment, the connection between the back part 2 and the seat part 1 can be the connection between the back part 2 and the seat part 1 body, or the connection between the back part 2 and the leg rest structure 12 as shown in the figure, and the present application does not limit this. Figure 4

[0050] In addition, the back part 2 can also include a headrest 23 and a back body 22. The headrest 23 is arranged at an end of the back body 22 away from the seat part 1, thereby achieving adjustment of the headrest position. The headrest 23 and the back body 22 can be integrally formed, and at this time, the connection between the back part 2 and the seat part 1 is the connection between the headrest 23 and the seat part 1. The headrest 23 can also be detachably and adjustably connected with the back body 22, and at this time, the connection between the back part 2 and the seat part 1 can be the connection between the headrest 23 and the seat part 1, or the connection between the back body 22 and the seat part 1, and the present application does not limit this.

[0051] The inflation and deflation device 3 can only fill a certain amount of gas into the air bag 4. For example, the inflation and deflation can only choose to half-fill the air bag 4 or fully fill the air bag 4. In some embodiments, the car seat 100 further includes a flow controller connected with the inflation and deflation device 3. The flow controller is used to control the flow of the inflation and deflation device 3. In other words, in this embodiment, the passenger can choose the filling amount of the air bag 4 by the inflation and deflation device 3 according to his actual needs and body size needs. The filling amount increases, and the hardness and support of the air bag also increase. Conversely, the filling amount decreases, and the hardness and support of the air bag also decrease. Since the height and body size of passengers are different, the setting of the flow controller can make the air bag 4 meet the needs of different passengers, thereby providing more comfortable and personalized body support for passengers as much as possible when the passengers need to use the car seat 100 for rest.

[0052] In addition, in the embodiment in which the back part 2 of the car seat 100 further includes a massage device, the air bag 4 and the massage device can share the inflation and deflation device 3. That is, the inflation and deflation device 3 can realize the inflation and deflation of the massage bag of the massage device, and can also realize the inflation and deflation of the air bag 4. Since the space of the car seat 100 is limited, this setting can improve the utilization rate of the inflation and deflation device 3, and compared with the scheme of separately arranging the inflation and deflation device 3, it is also more space-saving and improves the space utilization rate inside the back part 2.

[0053] ​In some embodiments, the passenger needs to manually adjust the inflation amount of the air bag 4. For example, a button is provided in the vehicle to control the operation of the inflation / deflation device 3. When the passenger needs to inflate the air bag 4, the passenger can click the button to achieve the inflation of the air bag 4. In addition, the passenger can control the inflation speed of the air bag 4 by long pressing, short pressing, etc. In other embodiments, the vehicle can fill the air bag 4 according to a preset inflation amount value or a limited inflation amount value. For example, the passenger can select the inflation amount of the air bag 4 according to the mobile phone software, the car control panel, or input the desired inflation amount, and then the inflation / deflation device 3 receives the signal and inflates the air bag 4 until the inflation amount reaches the value desired by the passenger.

[0054] In some embodiments, the car seat 100 further comprises a flow sensor. The flow sensor can be connected with the inflation / deflation device 3 to detect the inflation amount of the air bag 4. In other words, the flow sensor can detect the amount of gas entering from the end of the inflation / deflation device 3 and the air bag 4, which is conducive to the intelligent control of the inflation / deflation device 3. The flow sensor can only detect the amount of gas after the inflation / deflation device 3 stops working, or it can also monitor the inflation amount of the air bag 4 in real time. Based on this, in some embodiments, the flow sensor can display the value of the inflation amount in real time to the control panel end of the car, the mobile phone software end, etc., so that the passenger can intuitively observe the real-time inflation amount of the air bag 4 through the number, thereby judging whether the inflation / deflation device 3 is working normally.

[0055] Further, in this embodiment, the car seat 100 can further comprise a flow memory module and a control module. The flow sensor is used to send the inflation amount to the flow memory module. The flow memory module is used to form a memory signal according to the inflation amount and send the memory signal. The control module is used to receive the memory signal and control the inflation / deflation device 3 to inflate the air bag 4 to the memorized inflation amount.

[0056] The passenger can manually adjust the inflation amount of the air bag 4 through the elements of the button to achieve the lying comfort that best matches his own body shape. The flow sensor can detect the final inflation amount data of the air bag 4 and send it to the flow memory module. The flow memory module forms a memory signal to achieve the storage of the inflation amount. In the future when the passenger needs to lie again, the control module can directly call the memory signal to control the inflation / deflation device 3 to inflate the air bag 4 to the memorized inflation amount, and one key can achieve the adjustment of the car seat 100.

[0057] In this way, the passenger does not need to adjust the parameters one by one, does not need to adjust the inflation amount of the air bag 4 every time, and does not need to fine-tune individual parameters based on the stored data, which greatly reduces the operation of the passenger and saves time, and is conducive to improving the use experience of the passenger.

[0058] In some embodiments, the automobile seat 100 further comprises an air pressure detector. The air pressure detector is connected with the air bag 4 and is used to detect the air pressure of the air bag 4. If the air pressure of the air bag 4 is found to be decreasing in real time, it can be judged that the air bag 4 has a leakage phenomenon. The air pressure detector can be connected with the control panel of the vehicle or connected with the software of the mobile phone, so that the passenger can be reminded when the air pressure of the air bag 4 is insufficient. Alternatively, the vehicle can directly sound an alarm when the air pressure detector detects that the air bag 4 has a leakage, reminding the passenger that the air bag 4 cannot work normally. Through such a setting, the passenger can know in time whether the air bag 4 has an abnormal working condition, and if so, timely eliminate the abnormal problem or timely seek help to repair the air bag 4, so as to avoid the leakage of the air bag 4 causing the passenger to have an uncomfortable feeling during rest.

[0059] As for the deflation of the air bag 4, the passenger can click the button or other elements to make the inflation and deflation device 3 deflate. Alternatively, the air bag 4 can also be provided with a manual deflation port. The passenger can deflate the air bag 4 by operating the manual deflation port, which is not limited in the present application.

[0060] In the above various embodiments, the storage of the air bag 4 can be achieved by manual winding. After the passenger finishes resting, the gas in the air bag 4 is discharged, and the air bag 4 is wound and inserted into the opening portion 21, so that the storage of the air bag 4 can be achieved. Such a setting can simplify the structure of the automobile seat 100 and reduce the production cost of the automobile seat 100, which has a better cost performance. Moreover, when the passenger stores the air bag 4, he or she can also observe whether foreign matter is wound into the air bag 4 or the opening portion 21, so as to avoid the damage of the automobile seat 100 caused by the foreign matter.

[0061] Reference Figures 5 to 7 The storage of the air bag 4 can also be achieved by electric winding. In some embodiments, the automobile seat 100 further comprises a winding device 5 arranged in the backrest portion 2. The winding device 5 comprises a winding shaft 51 and a winding motor 52 for driving the winding shaft 51 to rotate. The connecting end 41 is connected with the winding shaft 51. The winding motor 52 can drive the winding shaft 51 to rotate, so that the air bag 4 can be wound on the winding shaft 51 and stored in the opening portion 21. Compared with the manual winding embodiment, the electric winding can improve the automation degree of the automobile seat 100 and the use experience of the passenger, reduce the passenger's arrangement time after finishing resting, and make the automobile seat 100 recover to the sitting mode more quickly.

[0062] The rewind motor 52 can directly drive the rewind shaft 51 to rotate. Alternatively, in some embodiments, the rewind motor 52 includes a rewind drive gear 521. The rewind shaft 51 is provided with a rewind driven gear 511 that cooperates with the rewind drive gear 521, and the diameter of the rewind driven gear 511 is larger than the diameter of the rewind drive gear 521. In this way, by amplifying the torque of the rewind motor 52 through the transmission ratio between the rewind drive gear 521 and the rewind driven gear 511, the rewind device 5 can not only achieve efficient rewinding of the airbag 4, but also reduce the parameter requirements of the rewind motor 52, thereby reducing the size of the rewind motor 52. Therefore, it is possible to better utilize the internal space of the backrest 2 and reduce costs.

[0063] The direction of rotation in which the reel 51 can drive the airbag 4 to wind around the outer circumference of the reel 51 is called the winding direction (i.e., the winding direction). Figure 6 The direction from the perspective of counterclockwise rotation is called the unwinding direction (i.e., the direction opposite to the winding direction). Figure 6 (Clockwise direction in view). In this embodiment, the winding motor 52 may only be able to drive the reel 51 to move in the winding direction. When a passenger needs to use the airbag 4, the airbag 4 can be manually pulled out from the opening 21. At this time, the movement of the airbag 4 drives the reel 51 to rotate in the unwinding direction. Alternatively, the winding motor 52 may drive the reel 51 to rotate in both the winding and unwinding directions, thereby further improving the automation level of the winding device 5.

[0064] Based on the embodiment of the winding device 5, the car seat 100 may further include an exhaust device 6. The exhaust device 6 is disposed between the opening 21 and the winding device 5, and includes a first exhaust shaft 61 and a second exhaust shaft 62 arranged in parallel. The airbag 4 is disposed in the gap between the first exhaust shaft 61 and the second exhaust shaft 62. In other words, when the winding motor 52 drives the reel 51 to rotate in the winding direction, the airbag 4 will be wound onto the reel 51 again through the gap between the first exhaust shaft 61 and the second exhaust shaft 62. Thus, the small gap between the first exhaust shaft 61 and the second exhaust shaft 62 can squeeze out any remaining gas in the airbag 4, making the volume of the airbag 4 smaller when wound onto the reel 51.

[0065] The gas expelled by the first exhaust shaft 61 and the second exhaust shaft 62 moves toward the free end 42. Therefore, in this embodiment, the inflation / deflation device 3 may include an inflation tube 31, which is connected to the airbag 4 near the free end 42. In this way, the gas in the airbag 4 can be extracted by the inflation / deflation device 3 through the free end 42 as much as possible, further improving the gas emptying rate of the airbag 4.

[0066] In some embodiments, the first exhaust shaft 61 and the second exhaust shaft 62 are directly connected to the frame of the car seat 100. In other embodiments, the exhaust device 6 comprises a housing 66. The first exhaust shaft 61 and the second exhaust shaft 62 are connected to the housing 66, so that the housing 66 can provide protection to the first exhaust shaft 61 and the second exhaust shaft 62. The first exhaust shaft 61 and the second exhaust shaft 62 can be fixed, and the movement of the airbag 4 between the gaps will not cause the first exhaust shaft 61 and the second exhaust shaft 62 to rotate. Alternatively, the first exhaust shaft 61 and the second exhaust shaft 62 can be rotatable, and the movement of the airbag 4 between the gaps will cause the first exhaust shaft 61 and the second exhaust shaft 62 to rotate, thereby reducing the frictional force during movement.

[0067] Further, in embodiments where the first exhaust shaft 61 and the second exhaust shaft 62 are rotatable, the exhaust device 6 can comprise a bearing 67. The bearing 67 is disposed between the first exhaust shaft 61 and the housing 66, and between the second exhaust shaft 62 and the housing 66. The provision of the bearing 67 can improve the smoothness of rotation of the first exhaust shaft 61 and the second exhaust shaft 62, and can also reduce the rotational friction between the first exhaust shaft 61 and the second exhaust shaft 62 and the housing 66, thereby improving the service life of the exhaust device 6. It is true that the exhaust device 6 can also be provided with a bearing 67 only between the first exhaust shaft 61 and the housing 66, or only between the second exhaust shaft 62 and the housing 66, and the present application does not limit this.

[0068] The housing 66 comprises an inlet 661 facing the free end 42 and an outlet 662 facing the connection end 41, so that when the airbag 4 is retracted by the retraction device 5, the airbag 4 can enter the exhaust device 6 through the inlet 661 and then enter the retraction device 5 through the outlet 662. As shown in Figure 6 and Figure 7 In some embodiments, the width of the inlet 661 decreases in the direction from the inlet 661 to the outlet 662. By so providing, the first round of gas extrusion can be performed at the inlet 661, helping the gas in the airbag 4 to move towards the free end 42, which is conducive to reducing the gas pressure at the first exhaust shaft 61 and the second exhaust shaft 62.

[0069] In some embodiments, the first exhaust shaft 61 and the second exhaust shaft 62 can be rotated by the airbag 4. In other embodiments, the exhaust device 6 comprises an exhaust motor 63. The exhaust motor 63 can drive the first exhaust shaft 61 and the second exhaust shaft 62 to rotate. By providing the exhaust motor 63, the exhaust efficiency and the emptying rate of the exhaust device 6 for the gas can be improved. Furthermore, the provision of the exhaust motor 63 can help the airbag 4 to pass through the gap between the first exhaust shaft 61 and the second exhaust shaft 62, thereby reducing the torque requirement at the retraction motor 52.

[0070] The exhaust motor 63 can be configured to drive the first exhaust shaft 61 and the second exhaust shaft 62 to rotate, respectively. In addition, as shown in FIG. 6, the exhaust device 6 can further include a driving member 64 and a driven member 65. The exhaust motor 63 drives the driving member 64 to rotate. The driving member 64 drives the first exhaust shaft 61 to rotate. The driving member 64 cooperates with the driven member 65 to drive the driven member 65 to rotate in a direction opposite to that of the first exhaust shaft 61. Through the transmission cooperation of the driving member 64 and the driven member 65, the exhaust motor 63 only needs to rotate the first exhaust shaft 61. In this way, the parameter requirement of the exhaust device 6 to the exhaust motor 63 can be further reduced. Figure 7

[0071] The cooperation between the driving member 64 and the first exhaust shaft 61 can be that the driving member 64 includes an exhaust driving gear 641, and the exhaust motor 63 drives the exhaust driving gear 641 to rotate. The first exhaust shaft 61 includes a first shaft gear 611. The exhaust driving gear 641 and the first shaft gear 611 are cooperated through direct engagement or belt structure. The cooperation between the exhaust motor 63 and the exhaust driving gear 641 can be that the output shaft of the exhaust motor 63 is fixedly connected with the exhaust driving gear 641, or can be connected through gear engagement, which is not limited in the present application. The output shaft of the exhaust motor 63 can be coaxially arranged with the exhaust driving gear 641, so as to improve the space utilization of the exhaust device 6.

[0072] The cooperation between the driving member 64 and the driven member 65 can be that the driven member 65 includes an exhaust driven gear 651, and the exhaust driven gear 651 is engaged with the exhaust driving gear 641. The second exhaust shaft 62 includes a second shaft gear 621. The exhaust driven gear 651 and the second shaft gear 621 are cooperated through direct engagement or belt structure. In some embodiments, the exhaust driving gear 641 includes a large gear and a small gear stacked along the rotation axis. The large gear cooperates with the first shaft gear 611. The small gear is engaged with the exhaust driven gear 651. In other words, the projection of the exhaust driven gear 651 and the exhaust driving gear 641 in the direction of the rotation axis partially overlaps. This arrangement can further reduce the volume of the exhaust device 6 and improve the space utilization inside the automobile seat 100.

[0073] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application pertains can make various modifications, supplements, or use similar methods to replace the described specific embodiments, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

[0074] ​Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described, however, any combination of the technical features is considered to be within the scope of the present specification.

Claims

1. A car seat, characterized in that, The seat comprises a seat part and a back part; the seat part and the back part are pivotally connected; the back part comprises an opening part on a side facing the seat part; The seat further comprises: an inflating and deflating device arranged in the back part; and an air bag accommodated in the opening part; the air bag comprises a connecting end and a free end; the air bag is connected with the inflating and deflating device to realize inflation and deflation of the air bag; when the air bag is inflated, the free end can be exposed from the opening part to fill a recess at a pivot joint of the seat part and the back part; a winding device comprising a winding shaft and a winding motor for driving the winding shaft to rotate; the winding device is arranged in the back part; the connecting end is connected with the winding shaft; the winding motor can drive the winding shaft to rotate so that the air bag can be wound on the winding shaft and accommodated in the opening part; an exhaust device comprising a first exhaust shaft and a second exhaust shaft arranged in parallel; the exhaust device is arranged between the opening part and the winding device, and the air bag is arranged in a gap between the first exhaust shaft and the second exhaust shaft.

2. The automobile seat according to claim 1, characterized by The seat further comprises: a flow sensor connected with the inflating and deflating device for detecting an inflation amount of the air bag.

3. The automobile seat according to claim 2, characterized by The seat further comprises: a flow memory module; the flow sensor is configured to send the inflation amount to the flow memory module; the flow memory module is configured to form a memory signal according to the inflation amount and send the memory signal; a control module configured to receive the memory signal and control the inflating and deflating device to inflate the air bag to the memorized inflation amount.

4. The automobile seat according to claim 1, characterized by The seat further comprises: a flow controller connected with the inflating and deflating device for controlling a flow of the inflating and deflating device.

5. The automobile seat according to claim 1, wherein The seat further comprises: an air pressure detector connected with the air bag for detecting an air pressure of the air bag.

6. The automobile seat according to claim 1, wherein The air bag is arranged to be wedge-shaped in a plane perpendicular to a pivot axis of the seat part and the back part in an inflated state, and a thickness of the air bag decreases from the connecting end toward the free end.

7. The automotive seat according to claim 6, characterized in that The seat part comprises a bottom surface away from the back part; the air bag is arranged to be parallel to the bottom surface on a side away from the seat part and the back part.

8. The automotive seat according to claim 1, characterized by The winding motor comprises a winding driving gear; the winding shaft is provided with a winding driven gear matched with the winding driving gear; a diameter of the winding driven gear is greater than a diameter of the winding driving gear.

9. The automotive seat according to claim 1, wherein The exhaust device comprises an exhaust motor; the exhaust motor can drive the first exhaust shaft and the second exhaust shaft to rotate.

10. The automotive seat according to claim 9, characterized in that The exhaust device further comprises a driving member and a driven member; the exhaust motor drives the driving member to rotate; the driving member drives the first exhaust shaft to rotate; the driving member is matched with the driven member to drive the driven member to drive the second exhaust shaft to rotate in a reverse direction of the first exhaust shaft.

11. The automotive seat according to claim 10, characterized by The driving member comprises an exhaust driving gear; the exhaust motor drives the exhaust driving gear to rotate; the first exhaust shaft comprises a first shaft gear; the exhaust driving gear and the first shaft gear are matched through direct engagement or a belt structure.

12. The automotive seat according to claim 11, characterized by The driven member comprises an exhaust driven gear; the exhaust driven gear is engaged with the exhaust driving gear; the second exhaust shaft comprises a second shaft gear; the exhaust driven gear and the second shaft gear are engaged through direct engagement or belt structure.

13. The automotive seat according to claim 1, characterized by The exhaust device comprises a housing; the first exhaust shaft and the second exhaust shaft are connected with the housing; the housing comprises an inlet towards the free end and an outlet towards the connection end; In the direction from the inlet towards the outlet, the width of the inlet decreases.

14. The automotive seat according to claim 13, characterized by The exhaust device further comprises a bearing; the bearing is arranged between the first exhaust shaft and the housing, and / or arranged between the second exhaust shaft and the housing.

15. The automotive seat according to claim 1, wherein The air charging and discharging device comprises an air charging pipe; the air charging pipe is connected with the air bag to realize air charging and discharging of the air bag.

16. The automotive seat of claim 1, wherein The seat part further comprises: a seat body, pivotally connected with the backrest part; a leg support structure, arranged at an end of the seat body away from the backrest part, and pivotally connected with the seat body.

17. A vehicle characterized by comprising: The vehicle comprises a front and a rear; the automobile seat comprises a first automobile seat and a second automobile seat; the first automobile seat and the second automobile seat are arranged in a direction from the front to the rear; wherein the backrest part of the first automobile seat can be pivoted to be connected with the seat part of the second automobile seat.

18. The vehicle of claim 17, wherein, ​

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