Backrest system, vehicle and backrest system adjustment method

Abstract

The embodiments of the present application provide a backrest system, an automobile, and a method for adjusting the backrest system, which belong to the automotive field. The automobile includes a seat belt for restraining a user in the backrest system, and the backrest system includes a backrest assembly and a drive assembly. The backrest assembly is used to support the user's back, and the backrest assembly includes a backrest body and a backrest block. The backrest block is located above the backrest body, and the projection area of ​​the seat belt in the front-to-back direction at least partially overlaps with the projection area of ​​the backrest block in the front-to-back direction. The drive assembly is mounted on the backrest body, and the backrest block is mounted on the drive assembly. The drive assembly is used to drive the backrest block to move to avoid the seatbelt. In the embodiments of the present application, the backrest system, the seat, the automobile, and the method for adjusting the backrest system, when the seatbelt contacts and rubs against the backrest block, the drive assembly drives the backrest block to avoid the seatbelt so that the seatbelt is separated from the backrest block, preventing the friction between the seatbelt and the backrest block from generating noise, thereby reducing noise during vehicle driving.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a backrest system, a vehicle, and an adjustment method for the backrest system. Background Art

[0002] During driving, the road may have various vibrations under certain road conditions, which can cause noise when the vehicle body is jolted, affecting the driving experience. It is necessary to minimize noise during driving to provide users with a better user experience. Summary of the Invention

[0003] In view of this, embodiments of the present application hope to provide a backrest system, a vehicle, and a method for adjusting the backrest system to reduce noise during vehicle driving.

[0004] To achieve the above-mentioned object, a first aspect of an embodiment of the present application provides a backrest system, wherein a vehicle includes a safety belt for restraining a user in the backrest system, and the backrest system includes:

[0005] a backrest assembly for supporting the user's back, the backrest assembly comprising a backrest body and a backrest block, the backrest block being located above the backrest body, the projection area of ​​the safety belt in the front-to-back direction at least partially overlapping the projection area of ​​the backrest block in the front-to-back direction;

[0006] A drive assembly is installed on the backrest body, and the backrest blocks are installed on the drive assembly. The drive assembly is used to drive the backrest blocks to move to avoid the seat belt.

[0007] In one embodiment, the drive assembly includes a rotating device and / or a translation device, the rotating device is mounted on the backrest body, the rotating device is used to drive the backrest block to rotate to avoid the safety belt, the rotation center line of the backrest block is arranged crosswise with the front-to-back direction, the translation device is mounted on the backrest body, the backrest block is arranged across the rotating device and the translation device, the translation device is used to drive the backrest block to translate to avoid the safety belt, and the direction of the translation of the backrest block can change the position of the backrest block along the front-to-back direction.

[0008] In one embodiment, the rotating device includes:

[0009] a first driving mechanism, mounted on the backrest body, wherein the first driving mechanism has a first state and a second state;

[0010] The first transmission mechanism, the first drive mechanism can drive the first transmission mechanism to rotate in the first state, the first drive mechanism is disengaged from the first transmission mechanism in the second state, and the backrest block is sleeved on the first transmission mechanism so that the first transmission mechanism drives the backrest block to rotate.

[0011] In one embodiment, the first driving mechanism includes:

[0012] a first drive assembly mounted on the backrest body, the first drive assembly being capable of drivingly connecting to or disconnecting from the first transmission mechanism;

[0013] a first clamper connected to the first drive assembly, wherein the first drive assembly is capable of driving the first clamper to switch between a first position and a second position;

[0014] The second clamper is movably arranged on the backrest block. When the first drive component is drive-connected to the first transmission mechanism, the first clamper is at the first position so that the first clamper and the second clamper clamp the first transmission mechanism. When the first drive component is disengaged from the first transmission mechanism, the first clamper is at the second position so that the first transmission mechanism is disengaged from the clamping of the first clamper and the second clamper.

[0015] In one embodiment, the first driving component includes:

[0016] A lifting drive, mounted on the backrest body;

[0017] The power drive is driven and connected to the lifting drive, the first clamper is connected to the power drive, the power drive is located below the first transmission mechanism, and the lifting drive is used to drive the power drive to move so that the power drive is connected or disconnected from the first transmission mechanism. When the power drive is driven and connected to the first transmission mechanism, the first clamper is in the first position. When the power drive is disconnected from the first transmission mechanism, the first clamper is in the second position.

[0018] In one embodiment, the lifting drive includes:

[0019] a first driver connected to the backrest body;

[0020] a sun gear, drivingly connected to the first driver so that the first driver drives the sun gear to rotate;

[0021] a planet carrier connected to the backrest body, the planet carrier being rotatably sleeved on the output shaft of the first driver;

[0022] a planetary gear meshing with the sun gear, the power drive being mounted on the planetary gear, an adjustment shaft being formed on one of the planetary gear and the planetary carrier, an adjustment slot being formed on the other of the planetary gear and the planetary carrier, the adjustment shaft being passed through the adjustment slot, the adjustment shaft being capable of moving within the adjustment slot to connect or disconnect the power drive with the drive of the first transmission mechanism;

[0023] A connecting member is connected to the planetary gear, and the first clamp is connected to the connecting member.

[0024] In one embodiment, the translation device includes:

[0025] a second driving mechanism, mounted on the backrest body, the second driving mechanism having a third state and a fourth state;

[0026] The second transmission mechanism is partially connected in the backrest block, the second drive mechanism can drive the second transmission mechanism to translate in the third state, the second transmission mechanism can drive the backrest block to translate to change the position of the backrest block relative to the backrest body in the front-to-back direction, and the second drive mechanism can be disengaged from the second transmission mechanism in the fourth state.

[0027] In one embodiment, the second driving mechanism includes:

[0028] a second drive assembly connected to the backrest body, the second drive assembly being capable of being drivably connected to or disconnected from the second transmission mechanism;

[0029] a mounting seat connected to the backrest body, the second drive assembly being mounted on the mounting seat;

[0030] The track is movably mounted on the backrest block along the front-rear direction, and the second transmission mechanism is movably arranged on the track along the front-rear direction.

[0031] A third aspect of the embodiments of the present application provides an automobile, including:

[0032] Vehicle body;

[0033] A seat, the seat being installed in the vehicle body, the seat comprising any one of the above-mentioned backrest systems and a seat body connected to the backrest system;

[0034] A safety belt is used to restrain a user on the backrest system. The safety belt can be partially moved to the front side of the seat, and the projection area of ​​the safety belt in the front-to-back direction at least partially overlaps with the projection area of ​​the backrest blocks in the front-to-back direction.

[0035] A fourth aspect of the embodiments of the present application provides a method for adjusting a backrest system, which is applied to any of the above-mentioned backrest systems, comprising:

[0036] When the squeezing parameter between the backrest block and the safety belt reaches a value greater than a first preset squeezing parameter and less than or equal to a second preset squeezing parameter, the backrest block is driven to rotate, and the second preset squeezing parameter is greater than the first preset squeezing parameter;

[0037] When the squeezing parameter between the backrest block and the safety belt is greater than the second preset squeezing parameter, the backrest block is driven to move backward.

[0038] The backrest system of the embodiment of the present application is suitable for petite users. When the seat belt contacts and rubs against the backrest segments, the drive assembly can drive the backrest segments to move to avoid the seat belt, disengaging the seat belt from the backrest segments. This prevents the seat belt from rubbing against the backrest segments and generates noise, thereby reducing noise during vehicle operation. It is understood that the friction between the seat belt and the backrest system is only localized. The backrest system separates a portion of the backrest segment at the location where the seat belt may contact the backrest, which is then disengaged by moving the backrest segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is an assembly diagram of the backrest system and the safety belt of an embodiment of the present application. The drive assembly is not shown in the figure. The figure shows the state where the backrest blocks rotate to avoid the safety belt;

[0040] Figure 2 This is an assembly diagram of the backrest system and the safety belt of an embodiment of the present application. The drive assembly is not shown in the figure. The figure shows the state where the backrest blocks are translated backward to avoid the safety belt;

[0041] Figure 3 This is a schematic structural diagram of the rotating device according to an embodiment of the present application, in which the adjustment slot is not shown;

[0042] Figure 4 This is a schematic structural diagram of the rotating device according to an embodiment of the present application, showing an adjustment slot;

[0043] Figure 5 An assembly diagram of the first drive assembly and the first clamper according to an embodiment of the present application;

[0044] Figure 6 This is a schematic structural diagram of a planet carrier according to an embodiment of the present application;

[0045] Figure 7 A view of the rotating device according to an embodiment of the present application projected along the direction of the rotation center line of the first transmission mechanism;

[0046] Figure 8 This is a schematic structural diagram of a translation device according to an embodiment of the present application;

[0047] Figure 9 This is a structural diagram of the backrest system of an embodiment of the present application.

[0048] Explanation of the accompanying drawings: 1-backrest body; 2-drive assembly; 21-rotating device; 211-first drive mechanism; 2111-first drive assembly; 21111-lifting drive; 201-first drive; 202-sun gear; 203-planetary carrier; 2031-adjusting shaft; 204-planetary gear; 2041-adjusting slot; 205-connecting piece; 21112-power drive; 206-second drive; 207-actuator; 2112-first clamper; 2113-second clamper; 212-first transmission mechanism; 22-translational device; 221-second drive mechanism; 2211-second drive assembly; 208-third drive; 209-drive gear; 2212-mounting seat; 2213-track; 222-second transmission mechanism; 3-backrest block; 100-safety belt. DETAILED DESCRIPTION

[0049] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on this application.

[0050] As part of the creative concept of this application, before describing the embodiments of this application, it is necessary to analyze the causes of noise generated during vehicle driving in related technologies, and obtain the technical solutions of the embodiments of this application through reasonable analysis.

[0051] It is understandable that seat belts need to be fastened while the vehicle is moving to ensure the user's safety. For users of most heights, there will be no contact and friction between the seat belt and the seat back during driving. However, for users with smaller statures, the seat needs to be moved forward more and the seat back needs to be straightened forward, which will cause the seat belt to contact the seat back. During the driving process, due to various excitations from the road surface, the vehicle body will be bumpy, and the seat belt and the seat back will rub against each other and make noise, which greatly affects the driving experience.

[0052] For example, the friction between the seat belt and the leather seat back makes a lot of noise, which leads to a poor driving experience.

[0053] In view of this, an embodiment of the present application provides an automobile comprising a vehicle body, a seat, and a seat belt 100. The seat is mounted within the vehicle body, and the seat belt 100 is used to restrain a user in the seat. The seat belt 100 is partially movable to the front of the seat. The seat within the vehicle body is provided for a user to sit on. For example, the seat may be a driver's seat, a front passenger seat, or a passenger seat. By partially moving the seat belt 100 to the front of the seat, the user in the seat can be protected by the seat belt 100, thereby ensuring safety during driving.

[0054] Illustratively, moving the active end of the seat belt 100 partially moves the seat belt 100 to the front side of the seat, and fixing the active end of the seat belt 100 to the vehicle body to protect the user's safety.

[0055] The chair of the embodiment of the present application includes a chair body and a backrest system, wherein the backrest system is connected to the chair body. A user sits on the chair body, and the user's back can lean against the backrest system.

[0056] In one embodiment, the safety belt 100 is used to restrain the user to the backrest system, thereby making the user safer.

[0057] For the backrest system of the embodiment of this application, please refer to Figure 1 、 Figure 2 and Figure 9 The backrest system includes a backrest assembly and a drive assembly 2. The backrest assembly is used to support the user's back. The backrest assembly includes a backrest body 1 and a backrest block 3. The backrest block 3 is located above the backrest body 1. The projection area of ​​the safety belt 100 along the front-to-back direction at least partially overlaps with the projection area of ​​the backrest block 3 along the front-to-back direction. The drive assembly 2 is installed on the backrest body 1, and the backrest block 3 is installed on the drive assembly 2. The drive assembly 2 is used to drive the backrest block 3 to move to avoid the safety belt 100. With such a structural form, for users with smaller bodies, when the safety belt 100 contacts and rubs against the backrest block 3, the drive assembly 2 can drive the backrest block 3 to move to avoid the safety belt 100 so that the safety belt 100 is out of contact with the backrest block 3, preventing the safety belt 100 from rubbing against the backrest block 3 and generating noise, thereby reducing the noise during vehicle driving. It can be understood that there is only local friction between the safety belt 100 and the backrest system. The backrest system separates a part as the backrest block 3 at the position where it may come into contact with the safety belt 100. By moving the backrest block 3, the safety belt 100 can be disconnected from the backrest system.

[0058] It is understood that the point where the backrest system and the safety belt 100 come into contact and rub against each other is generally located above the backrest system, and therefore the backrest block 3 is generally located slightly above the backrest body 1. The projection area of ​​the safety belt 100 in the front-to-back direction at least partially overlaps with the projection area of ​​the backrest block 3 in the front-to-back direction. When the seat moves forward, the backrest block 3 may come into contact with the safety belt 100.

[0059] In one embodiment, please refer to Figure 9 The driving assembly 2 includes a rotating device 21 and / or a translation device 22.

[0060] It is understandable that the drive assembly 2 may include the rotation device 21 but not the translation device 22 , or the drive assembly 2 may include the translation device 22 but not the rotation device 21 , or the drive assembly 2 may include both the rotation device 21 and the translation device 22 .

[0061] It is understandable that the noise generated by the contact and friction between the backrest block 3 and the safety belt 100 is mainly due to the forward adjustment of the seat, which makes the backrest block 3 too close to the safety belt 100, especially the upper part of the backrest block 3 contacts and rubs against the safety belt 100.

[0062] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 9 The rotation device 21 is mounted on the backrest body 1. The rotation device 21 is used to drive the backrest block 3 to rotate to avoid the seat belt 100. The rotation centerline of the backrest block 3 is arranged to intersect the front-to-back direction. With this structure, since the rotation centerline of the backrest block 3 is arranged to intersect the front-to-back direction, the rotation device 21 drives the backrest block 3 to rotate so that the portion of the backrest block 3 that contacts the seat belt 100 can move backward during the rotation process, causing the backrest block 3 to break away from the seat belt 100, reducing the noise caused by the contact and friction between the seat belt 100 and the backrest block 3, thereby reducing the noise during vehicle driving.

[0063] Exemplarily, the direction in which the backrest block 3 rotates causes the upper portion of the backrest block 3 to move backward to avoid the safety belt 100 .

[0064] In one embodiment, please refer to Figure 9 , the backrest block 3 is at least partially arranged on the rotating device 21.

[0065] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 9 , the rotation center line of the backrest block 3 is perpendicular to the front-rear direction.

[0066] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 9The translation device 22 is installed on the backrest body 1. The translation device 22 is used to drive the backrest block 3 to translate to avoid the safety belt 100. The direction of the translation of the backrest block 3 can change the position of the backrest block 3 along the front-back direction. In this structural form, the translation device 22 drives the backrest block 3 to translate, changing the position of the backrest block 3 along the front-back direction, so that the backrest block 3 can move backward to break away from the safety belt 100, reducing the noise generated by the contact friction between the safety belt 100 and the backrest block 3, thereby reducing the noise during vehicle driving.

[0067] In one embodiment, please refer to Figure 9 , the backrest block 3 is at least partially arranged on the translation device 22.

[0068] In one embodiment, please refer to Figure 9 , the backrest block 3 is arranged across the translation device 22 and the rotation device 21. In this structural form, the backrest block 3 can not only move backward through the translation device 22 to avoid the safety belt 100, but also can rotate through the rotation device 21 to avoid the safety belt 100.

[0069] It should be noted that the movement in the embodiment of the present application may be rotation or translation.

[0070] In one embodiment, please refer to Figures 3 to 7 The rotating device 21 includes a first driving mechanism 211 and a first transmission mechanism 212. The first driving mechanism 211 is installed on the backrest body 1, and the first driving mechanism 211 has a first state and a second state. The first driving mechanism 211 can drive the first transmission mechanism 212 to rotate in the first state, and the first driving mechanism 211 is disengaged from the first transmission mechanism 212 in the second state. The backrest block 3 is sleeved on the first transmission mechanism 212 so that the first transmission mechanism 212 drives the backrest block 3 to rotate. In such a structural form, the backrest is sleeved on the first transmission mechanism 212, and the backrest rotates with the first transmission mechanism 212. The backrest body 1 provides support for the first driving mechanism 211. The first driving mechanism 211 drives the first transmission mechanism 212 to rotate in the first state. The rotating first transmission mechanism 212 drives the backrest block 3 to rotate so as to avoid the safety belt 100. The first driving mechanism 211 is disengaged from the first transmission mechanism 212 in the second state. The first driving mechanism 211 cannot drive the first transmission mechanism 212 to rotate in the second state, so that the backrest block 3 cannot rotate under the drive of the first driving mechanism 211. When the translation device 22 drives the backrest block 3 to translate, the first driving mechanism 211 is switched to the second state, and the backrest block 3 translates but does not rotate, which can reduce the possibility of motion interference of the backrest block 3 arranged across the rotating device 21 and the translation device 22 under the drive of the rotating device 21 and the translation device 22.

[0071] It is understood that the rotating device 21 and the translating device 22 are not limited to driving the backrest segment 3 separately. In one embodiment, the rotating device 21 and the translating device 22 can drive the backrest segment 3 together.

[0072] It is understandable that the first driving mechanism 211 can have various structural forms.

[0073] In one embodiment, please refer to Figures 3 to 7The first drive mechanism 211 includes a first drive assembly 2111, a first clamp 2112, and a second clamp 2113. The first drive assembly 2111 is mounted on the backrest body 1 and can be driven to or from the first transmission mechanism 212. The first clamp 2112 is connected to the first drive assembly 2111 and can drive the first clamp 2112 to switch between a first position and a second position. The second clamp 2113 is movably disposed on the backrest block 3. When the first drive assembly 2111 is driven to be connected to the first transmission mechanism 212, the first clamp 2112 is in a first position, clamping the first clamp 2112 and the second clamp 2113 on the first transmission mechanism 212. When the first drive assembly 2111 is disengaged from the first transmission mechanism 212, the first clamp 2112 is in a second position, releasing the first transmission mechanism 212 from the clamping of the first clamp 2112 and the second clamp 2113. With such a structural form, the first driving component 2111 drives the first clamper 2112 to move to the first position so that the first clamper 2112 and the second clamper 2113 clamp the first transmission mechanism 212. Since the first driving component 2111 is installed on the backrest body 1 and provides support to the first driving component 2111 through the backrest body 1, the first clamper 2112, the second clamper 2113 and the first transmission mechanism 212 clamped by the first clamper 2112 and the second clamper 2113 can all be better supported by the backrest body 1 through the first driving component 2111, and the first transmission mechanism 212 can be better constrained by the first clamper 2112 and the second clamper 2113. In this case, the first driving component 2111 is driven and connected to the first transmission mechanism 212, and the first driving component 2111 drives the first transmission mechanism 212 clamped between the first clamper and the second clamper 2113 to rotate, thereby driving the backrest block 3 mounted on the first transmission mechanism 212 to rotate. The first drive component 2111 is separated from the first transmission mechanism 212, and the first drive component 2111 cannot drive the first transmission mechanism 212 to rotate. In this case, the first clamper 2112 is driven to the second position by the first drive component 2111, and the first transmission mechanism 212 is disengaged from the clamping of the first clamper 2112 and the second clamper 2113. The first transmission mechanism 212 is no longer constrained by the first clamper 2112 and the second clamper 2113, which is beneficial for the first transmission mechanism 212 and the backrest block 3 mounted on the first transmission mechanism 212 to translate under the drive of the translation device 22, and can reduce the possibility of motion interference of the backrest block 3 spanning the rotating device 21 and the translation device 22 under the drive of the rotating device 21 and the translation device 22.

[0074] It can be understood that since the second clamper 2113 is movably arranged on the backrest, when the first clamper 2112 and the second clamper 2113 clamp the first transmission mechanism 212, the first clamping mechanism rotates under the drive of the first drive component 2111 to drive the backrest block 3 to rotate, and the second clamper 2113 does not rotate with the backrest block 3. The first clamper 2112 and the second clamper 2113 can better restrain the first transmission mechanism 212.

[0075] It is understandable that, during the process in which the first driving assembly 2111 drives the first transmission mechanism 212 to rotate, the first clamping mechanism may not be constrained to the first clamper 2112 and the second clamper 2113 .

[0076] In one embodiment, please refer to Figures 3 to 7 ,as well as Figure 9 The second clamp 2113 is at least partially located within the backrest block 3. This structure reduces the exposure of the second clamp 2113 and improves the overall aesthetic quality. For example, a certain clearance space is provided within the backrest block 3 to accommodate the second clamp 2113, allowing the second clamp 2113 to move relative to the backrest block 3 without rotating with it.

[0077] In one embodiment, the second clamper 2113 is located in the backrest block 3 , and the first clamper 2112 is driven by the first driving assembly 2111 to partially move into the backrest block 3 to clamp the first transmission mechanism 212 together with the second clamper 2113 .

[0078] In one embodiment, please refer to Figures 3 to 7The first drive assembly 2111 includes a lifting drive 21111 and a power drive 21112. The lifting drive 21111 is installed on the backrest body 1. The power drive 21112 is driven and connected to the lifting drive 21111. The power drive 21112 is located below the first transmission mechanism 212. The first clamper 2112 is connected to the power drive 21112. The lifting drive 21111 is used to drive the power drive 21112 to move so that the power drive 21112 and the first transmission mechanism 212 are driven and connected or disconnected. When the power drive 21112 is driven and connected to the first transmission mechanism 212, the first clamper 2112 is in a first position. When the power drive 21112 is disconnected from the first transmission mechanism 212, the first clamper 2112 is in a second position. With such a structural form, the lifting drive 21111 drives the power drive 21112 and the first clamp 2112 connected to the power drive 21112 to rise and fall. The rise or fall of the power drive 21112 causes the position between the power drive 21112 and the first transmission mechanism 212 to change, so that the power drive 21112 can be driven by the lifting device to move to or from the first transmission mechanism 212. Furthermore, the power drive 21112 is located below the first transmission mechanism 212. The power drive 21112 moves upward to be driven and connected with the first transmission mechanism 212, and the power drive 21112 moves downward to be disconnected from the first transmission mechanism 212. The power drive 21112 that is disconnected from the first transmission mechanism 212 downward can move into the backrest body 1, reducing the possibility of the power drive 21112 being exposed. The power drive 21112 that moves downward can be disconnected from the backrest block 3, preventing the power drive 21112 from affecting the translation of the backrest block 3.

[0079] It is understood that the present application is not limited to the method of lifting to connect or disconnect the power drive 21112 from the first transmission mechanism 212. Any method is applicable as long as the power drive 21112 can move away from or closer to the first transmission mechanism 212. For example, the power drive 21112 can be connected or disconnected from the first transmission mechanism 212 by moving it horizontally.

[0080] In one embodiment, please refer to Figures 3 to 7 , the lifting drive 21111 is located below the first transmission mechanism 212

[0081] In one embodiment, please refer to Figures 3 to 7The lifting drive 21111 includes a first driver 201, a sun gear 202, a planetary carrier 203, planetary gears 204, and a connector 205. The first driver 201 is connected to the backrest body 1. The sun gear 202 is in driving connection with the first driver 201, so that the first driver 201 drives the sun gear 202 to rotate. The planetary carrier 203 is connected to the backrest body 1 and is rotatably mounted on the output shaft of the first driver 201. The planetary gears 204 mesh with the sun gear 202. The power drive 21112 is mounted on the planetary gears 204. An adjustment shaft 2031 is formed on one of the planetary gears 204 and the planetary carrier 203. An adjustment slot 2041 is formed on the other of the planetary gears 204 and the planetary carrier 203. The adjustment shaft 2031 extends through the adjustment slot 2041 and can move within the adjustment slot 2041 to connect or disconnect the power drive 21112 with the first transmission mechanism 212. The connecting member 205 is connected to the planetary gear 204, and the first clamper 2112 is connected to the connecting member 205. With this structural form, the first driver 201 and the planetary carrier are supported by the backrest body 1. The planetary carrier is connected to the backrest body 1 and hardly moves relative to the backrest body. The first driver 201 drives the sun gear 202 to rotate, and the rotating sun gear 202 drives the planetary gear 204 to move, causing the adjustment shaft 2031 to move within the adjustment slot 2041, thereby changing the position between the planetary gear 204 and the first transmission mechanism 212. Because the power drive 21112 and the connecting member 205 are both disposed on the planetary gear 204, as the position between the planetary gear 204 and the first transmission mechanism 212 changes, the position between the power drive 21112 and the first transmission mechanism 212 also changes. Therefore, the position change of the planetary gear 204 drives the power drive 21112, the connecting member 205, and the first clamper 2112 to rise and fall together. The travel distance that the planetary wheel 204 can move during the lifting process is roughly the length of the adjustment slot 2041. While ensuring sufficient adjustment amount, the space occupied by the lifting drive 21111 in the height direction can be reduced, which is conducive to saving space.

[0082] It is understandable that there can be various forms of the lifting drive 21111. For example, the lifting drive 21111 can be a cylinder or a hydraulic cylinder, which drives the power drive 21112 to move up and down under the action of the cylinder or the power cylinder.

[0083] In one embodiment, please refer to Figures 3 to 7 , the connecting member 205 is rod-shaped.

[0084] In one embodiment, please refer to Figures 3 to 7The power drive 21112 includes a second driver 206 and an actuator 207 connected to the second driver 206. The second driver 206 is used to drive the actuator 207 to rotate, thereby driving the first transmission mechanism 212 to rotate. From the rear end of the adjustment slot 2041 to the front end of the adjustment slot 2041, the distance between the point on the center line of the adjustment slot 2041 and the center position of the output shaft of the second driver 206 gradually increases. With such a structural form, when the sun gear 202 rotates and drives the planetary gears 204 to move, the planetary gears 204 will drive the power drive 21112 to move forward and downward or backward and upward, so that the first transmission mechanism 212 can be set as far as possible on the rear side of the backrest block 3. In the process of the backrest block 3 rotating to move the upper part of the backrest block 3 backward, the interference between the bottom of the backrest block 3 and the backrest body 1 can be minimized.

[0085] Please note that Figures 3 to 7 , along the axial projection of the output shaft of the second driver 206 , the center position of the output shaft of the second driver 206 coincides with the center position of the actuator 207 .

[0086] In one embodiment, please refer to Figures 3 to 7 The actuator 207 is a gear, and the first transmission mechanism 212 is a shaft with gear teeth.

[0087] In one embodiment, one of the first clamper 2112 and the second clamper 2113 is an electromagnet, and the other of the first clamper 2112 and the second clamper 2113 is an electromagnet or a ferromagnetic member. With this structure, when the electromagnet is energized, the first clamper 2112 and the second clamper 2113 clamp the first transmission mechanism 212. When the electromagnet is de-energized, the first clamper 2112 and the second clamper 2113 can separate, and the first transmission mechanism 212 can be freed from the constraints of the first clamper 2112 and the second clamper 2113.

[0088] In one embodiment, please refer to Figure 8 and Figure 9The translation device 22 includes a second drive mechanism 221 and a second transmission mechanism 222. The second drive mechanism 221 is installed on the backrest body 1, and the second drive mechanism 221 has a third state and a fourth state. The second transmission mechanism 222 is partially connected to the backrest block 3. The second drive mechanism 221 can drive the second transmission mechanism 222 to translate in the third state. The second transmission mechanism 222 can drive the backrest block 3 to translate to change the position of the backrest block 3 relative to the backrest body 1 in the front-to-back direction. The second drive mechanism 221 can be separated from the second transmission mechanism 222 in the fourth state. With such a structural form, the second drive mechanism 221 drives the second transmission mechanism 222 to translate in the third state. Since the second transmission mechanism 222 is partially located in the backrest block 3, the translation of the second transmission mechanism 222 can drive the backrest block 3 to translate, so that the backrest block 3 moves backward relative to the seat belt to avoid the seat belt 100 through translation. The second driving mechanism 221 is disengaged from the second transmission mechanism 222 in the fourth state, and the second transmission mechanism 222 is not affected by the second driving mechanism 221. In this state, the backrest block 3 is driven to rotate by the rotating mechanism, and the backrest block 3 rotates but does not translate, which can reduce the possibility of motion interference between the backrest block 3 spanning the rotating device 21 and the translation device 22 under the drive of the rotating device 21 and the translation device 22.

[0089] In one embodiment, please refer to Figure 8 and Figure 9 The second drive mechanism 221 includes a second drive assembly 2211, a mounting base 2212, and a track 2213. The second drive assembly 2211 is connected to the backrest body 1 and can be drivably connected to or disconnected from the second transmission mechanism 222. The mounting base 2212 is connected to the backrest body 1. The track 2213 is movably mounted to the backrest block 3 in the front-to-back direction, and the second transmission mechanism 222 is movably disposed on the track 2213 in the front-to-back direction. In such a structural form, the second drive component 2211 and the mounting seat 2212 are both connected to the backrest body 1, and the second drive component 2211 and the mounting seat 2212 are both supported by the backrest body 1. The track 2213 can move relative to the backrest block 3. When the backrest block 3 moves horizontally following the second transmission mechanism 222, the track 2213 will not move with the backrest block 3. The moving direction of the second transmission mechanism 222 can be better guided by the track 2213. The second drive component 2211 installed on the mounting seat 2212 can better drive the second transmission mechanism 222 in the track 2213 to move.

[0090] Exemplarily, a slide groove is provided in the backrest block 3, and the track 2213 moves in the slide groove.

[0091] In one embodiment, please refer to Figure 8 and Figure 9The second transmission mechanism 222 is a rack gear. The second drive assembly 2211 includes a third driver 208 and a drive gear 209. The third driver 208 is connected to the backrest body 1. The drive gear 209 is in driving connection with the third driver 208, so that the third driver 208 drives the drive gear 209 to rotate. The drive gear 209 engages with the rack gear to drive the rack gear to translate within the track 2213. In this structural form, the third driver 208 drives the drive gear 209 to rotate, and the drive gear 209 engages with the rack gear to drive the rack gear to translate.

[0092] In one embodiment, one of the mounting base 2212 and the track 2213 is an electromagnet, and the other is an electromagnet or a ferromagnetic member. With this structure, when the electromagnet is energized, the track 2213 and the mounting base 2212 engage, driving the second drive assembly 2211 and the second transmission mechanism 222 in connection. When the electromagnet is de-energized, the track 2213 and the mounting base 2212 can separate, allowing the second transmission mechanism 222 to separate from the second drive assembly 2211, thereby preventing interference with the movement of the rotating device 21.

[0093] An embodiment of the present application provides an adjustment method for a backrest system, which is applied to the backrest system of any of the above embodiments. The adjustment method includes: when the extrusion parameter between the backrest block 3 and the safety belt 100 reaches a value greater than a first preset extrusion parameter and less than or equal to a second preset extrusion parameter, driving the backrest block 3 to rotate, and the second preset extrusion parameter is greater than the first preset extrusion parameter; when the extrusion parameter between the backrest block 3 and the safety belt 100 is greater than the second preset extrusion parameter, driving the backrest block 3 to move backward.

[0094] It is understood that when the squeeze parameter is greater than the first preset squeeze parameter and less than or equal to the second preset squeeze parameter, there is a certain amount of squeeze between the seat belt 100 and the backrest block 3, but the squeeze is small, and the backrest block 3 can be safely separated with a small position change by rotating the backrest block 3. When the squeeze parameter is greater than the second preset squeeze parameter, the squeeze between the seat belt 100 and the backrest block 3 is large, and the backrest block 3 moves significantly backward through translation to avoid the seat belt 100.

[0095] For example, the first preset compression parameter may be a compression parameter corresponding to when the seat belt 100 just contacts the backrest block 3 .

[0096] In one embodiment, the squeezing parameter may be the squeezing force or the squeezing displacement between the safety belt 100 and the backrest block 3 .

[0097] For example, the squeezing force may be measured by a pressure sensor, and the squeezing position may be measured by a displacement sensor.

[0098] In one embodiment, when the vehicle is turned off or the backrest body 1 moves backward a preset distance, the backrest block 3 is reset.

[0099] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A backrest system, characterized in that: The vehicle includes a safety belt for restraining a user in the backrest system, the backrest system including: a backrest assembly for supporting the user's back, the backrest assembly comprising a backrest body and a backrest block, the backrest block being located above the backrest body, the projection area of ​​the safety belt in the front-to-back direction at least partially overlapping the projection area of ​​the backrest block in the front-to-back direction; A drive assembly is installed on the backrest body, and the backrest blocks are installed on the drive assembly. The drive assembly is used to drive the backrest blocks to move to avoid the seat belt.

2. The backrest system according to claim 1, characterized in that The driving assembly includes a rotating device and a translation device. The rotating device is installed on the backrest body. The rotating device is used to drive the backrest blocks to rotate to avoid the safety belt. The rotation center line of the backrest blocks is arranged crosswise with the front-to-back direction. The translation device is installed on the backrest body. The backrest blocks are arranged across the rotating device and the translation device. The translation device is used to drive the backrest blocks to translate to avoid the safety belt. The direction of the translation of the backrest blocks can change the position of the backrest blocks along the front-to-back direction.

3. The backrest system according to claim 2, characterized in that The rotating device comprises: a first driving mechanism, mounted on the backrest body, wherein the first driving mechanism has a first state and a second state; The first transmission mechanism, the first drive mechanism can drive the first transmission mechanism to rotate in the first state, the first drive mechanism is disengaged from the first transmission mechanism in the second state, and the backrest block is sleeved on the first transmission mechanism so that the first transmission mechanism drives the backrest block to rotate.

4. The backrest system according to claim 3, characterized in that The first driving mechanism comprises: a first drive assembly mounted on the backrest body, the first drive assembly being capable of drivingly connecting to or disconnecting from the first transmission mechanism; a first clamper connected to the first drive assembly, wherein the first drive assembly is capable of driving the first clamper to switch between a first position and a second position; The second clamper is movably arranged on the backrest block. When the first drive component is drive-connected to the first transmission mechanism, the first clamper is at the first position so that the first clamper and the second clamper clamp the first transmission mechanism. When the first drive component is disengaged from the first transmission mechanism, the first clamper is at the second position so that the first transmission mechanism is disengaged from the clamping of the first clamper and the second clamper.

5. The backrest system according to claim 4, characterized in that The first drive assembly comprises: A lifting drive, mounted on the backrest body; The power drive is driven and connected to the lifting drive, the first clamper is connected to the power drive, the power drive is located below the first transmission mechanism, and the lifting drive is used to drive the power drive to move so that the power drive is connected or disconnected from the first transmission mechanism. When the power drive is driven and connected to the first transmission mechanism, the first clamper is in the first position. When the power drive is disconnected from the first transmission mechanism, the first clamper is in the second position.

6. The backrest system according to claim 5, characterized in that The lifting drive comprises: a first driver connected to the backrest body; a sun gear, drivingly connected to the first driver so that the first driver drives the sun gear to rotate; a planet carrier connected to the backrest body, the planet carrier being rotatably sleeved on the output shaft of the first driver; a planetary gear meshing with the sun gear, the power drive being mounted on the planetary gear, an adjustment shaft being formed on one of the planetary gear and the planetary carrier, an adjustment slot being formed on the other of the planetary gear and the planetary carrier, the adjustment shaft being passed through the adjustment slot, the adjustment shaft being capable of moving within the adjustment slot to connect or disconnect the power drive with the drive of the first transmission mechanism; A connecting member is connected to the planetary gear, and the first clamp is connected to the connecting member.

7. The backrest system according to any one of claims 2 to 6, characterized in that: The translation device comprises: a second driving mechanism, mounted on the backrest body, the second driving mechanism having a third state and a fourth state; The second transmission mechanism is partially connected in the backrest block, the second drive mechanism can drive the second transmission mechanism to translate in the third state, the second transmission mechanism can drive the backrest block to translate to change the position of the backrest block relative to the backrest body in the front-to-back direction, and the second drive mechanism can be disengaged from the second transmission mechanism in the fourth state.

8. The backrest system according to claim 7, characterized in that The second driving mechanism comprises: a second drive assembly connected to the backrest body, the second drive assembly being capable of being drivably connected to or disconnected from the second transmission mechanism; a mounting seat connected to the backrest body, the second drive assembly being mounted on the mounting seat; The track is movably mounted on the backrest block along the front-rear direction, and the second transmission mechanism is movably arranged on the track along the front-rear direction.

9. An automobile, characterized in that: include: Vehicle body; A seat, the seat being installed in the vehicle body, the seat comprising a backrest system according to any one of claims 1 to 8 and a seat body connected to the backrest system; A safety belt is used to restrain a user on the backrest system. The safety belt can be partially moved to the front side of the seat, and the projection area of ​​the safety belt in the front-to-back direction at least partially overlaps with the projection area of ​​the backrest blocks in the front-to-back direction.

10. A method for adjusting a backrest system, characterized in that: The backrest system according to any one of claims 1 to 8 comprises: When the squeezing parameter between the backrest block and the safety belt reaches a value greater than a first preset squeezing parameter and less than or equal to a second preset squeezing parameter, the backrest block is driven to rotate, and the second preset squeezing parameter is greater than the first preset squeezing parameter; When the squeezing parameter between the backrest block and the safety belt is greater than the second preset squeezing parameter, the backrest block is driven to move backward.

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