Seat back angle adjustment mechanism and vehicle

Abstract

The application relates to a seat backrest angle adjusting mechanism and a vehicle, relates to the technical field of seat backrest angle adjustment, and comprises a fixing frame, a driving motor, a lead screw and a lock latch. The fixing frame is connected to the vehicle. An accommodating space is defined in the fixing frame. A sliding groove is arranged on the fixing frame and is located on a side wall for forming the accommodating space. The driving motor is installed on the fixing frame and is located outside the accommodating space. The lead screw is connected to an output shaft of the driving motor. One end of the lead screw away from the driving motor extends into the accommodating space and is rotationally connected to the fixing frame. One end of the lock latch in the length direction is located in the accommodating space and is threadedly connected to the lead screw. The other end of the lock latch in the length direction passes through the sliding groove, is located outside the accommodating space and is connected to the seat backrest. The seat backrest angle is adjusted through the cooperation of the fixing frame, the driving motor, the lead screw and the lock latch. The side wall with the sliding groove can support the lock latch, and the overall structure is stable.

Description

Technical Field

[0001] This application relates to the technical field of seat back angle adjustment, and more particularly to a seat back angle adjustment mechanism and vehicle. Background Technology

[0002] As consumers increasingly demand higher levels of vehicle comfort, seat back angles, especially those in the rear seats, are receiving more and more attention. A suitable seat back angle provides effective support for the back and waist of drivers and passengers, alleviating fatigue caused by long journeys. Conversely, an unsuitable backrest angle can exacerbate fatigue and negatively impact the riding experience. Currently, although some vehicles are equipped with rear seat backrest angle adjustment mechanisms, these mechanisms are complex in structure, occupy a lot of space, and have poor overall structural stability. This results in poor reliability and smoothness of seat backrest adjustment, and they cannot adequately meet the adjustment needs of the seat backrest. Utility Model Content

[0003] This application addresses, to at least some extent, one of the technical problems in the related art.

[0004] Therefore, this application aims to provide a seat back angle adjustment mechanism and vehicle, which realizes seat back angle adjustment through the cooperation of a fixing frame, a drive motor, a lead screw and a latch. The overall structure is simple and compact and occupies little space. Furthermore, the side wall with the slide groove can support the latch, the connection between the latch and the seat back is good, and the overall structure has good stability.

[0005] To achieve the above objectives, in a first aspect, this application provides a seat back angle adjustment mechanism, comprising: A mounting bracket for connection to a vehicle; the mounting bracket defines a receiving space; the mounting bracket has a sliding groove located on the side wall for forming the receiving space; The drive motor is mounted on the fixed frame and located outside the housing space; A lead screw is connected to the output shaft of a drive motor; the end of the lead screw away from the drive motor extends into the receiving space and is rotatably connected to the fixed frame. The latch has one end located within the receiving space and threadedly connected to the lead screw, while the other end of the latch passes through the slide groove outside the receiving space and is connected to the seat back.

[0006] In this technical solution, the angle adjustment of the seat backrest is achieved through the cooperation of a fixed frame, a drive motor, a lead screw, and a latch. The overall structure is simple, compact, space-saving, and highly stable. The drive motor drives the lead screw to rotate, and the latch converts the rotational motion of the lead screw into linear sliding along a groove. The latch then moves the connection between the seat backrest and the latch, causing the seat backrest to rotate and thus adjusting its angle. The overall structure is simple and has high transmission efficiency. The fixed frame is used to mount the drive motor and support the rotation of the lead screw. The fixed frame defines a receiving space within which the latch body and the lead screw are housed. The latch passes through the groove and connects to the seat backrest. This not only protects the latch body and the lead screw but also provides support to the latch through the side wall of the groove, increasing its strength and the reliability and stability of the seat backrest rotation. It also contributes to the compact structure and ease of arrangement. Placing the drive motor outside the receiving space avoids the constraints of internal space affecting motor operation and facilitates the inspection and maintenance of the drive motor.

[0007] In some embodiments of this application, the fixing frame is equipped with a guide slide post, which is disposed in the receiving space and is arranged in the same direction as the lead screw; the latch is provided with a through hole for the guide slide post to pass through, so that the latch can slide along the guide slide post.

[0008] In the technical solution, a guide slide is set to guide the latch to slide, so as to avoid the latch from deflecting or shaking due to the rotation of the screw during the movement of the screw. This ensures that the latch can move smoothly, thereby ensuring the smoothness and stability of the seat back angle adjustment, reducing the jamming or abnormal noise during the adjustment process, improving the user experience, and also reducing the wear of components caused by misalignment, thus extending the service life of the mechanism.

[0009] In some embodiments of this application, the fixing bracket includes a motor bracket and a stabilizing bracket, which are arranged opposite to each other along the length of the latch. The motor bracket and the stabilizing bracket together define a receiving space. A sliding groove is provided on the stabilizing bracket, and a lead screw is located on the side of the stabilizing bracket facing the motor bracket. The drive motor is mounted on the motor bracket.

[0010] In the technical solution, the fixing frame is designed as a split structure including a motor bracket and a stabilizing bracket. The motor bracket and the stabilizing bracket are arranged opposite each other along the length of the latch and together form a receiving space. This facilitates the placement of the lead screw and the latch body within the receiving space, making the assembly of each component convenient. By mounting the drive motor on the motor bracket and placing the slide groove on the stabilizing bracket, the motor bracket provides stable mounting support for the drive motor, and the stabilizing bracket can support the latch. This ensures that the fixing frame is subjected to uniform force, avoiding stress concentration on the motor bracket or the stabilizing bracket, thereby ensuring the stability of the overall structure.

[0011] In some embodiments of this application, the mounting bracket further includes a fixed support, which is located on the side of the motor bracket away from the stabilizing bracket. The side of the motor bracket away from the stabilizing bracket is connected to the fixed support, and the side of the stabilizing bracket facing the motor bracket is connected to the fixed support. The fixed support is connected to the vehicle.

[0012] In the technical solution, a fixed bracket is set up and connected to both the vehicle and the motor bracket to increase the strength of the motor bracket, thereby ensuring the reliability and stability of the latch movement. By connecting the fixed bracket to the side of the motor bracket away from the stable bracket and the side of the stable bracket facing the motor bracket, the motor bracket is positioned between the fixed bracket and the stable bracket. This not only protects the motor bracket, thereby protecting the lead screw and latch body installed on the motor bracket, but also increases the overall structural strength and rigidity of the fixed bracket. At the same time, it also makes the overall structure of the adjustment mechanism more compact.

[0013] In some embodiments of this application, the drive motor is connected to the fixed bracket via a connecting shaft; The motor bracket is connected with fasteners, and the fixed bracket is provided with a connecting groove for the fasteners to pass through, and the fasteners can slide along the connecting groove; wherein, the connecting groove is an arc groove, and the center of the arc of the connecting groove is concentric with the connecting shaft, so that the motor bracket can rotate along the connecting groove with the connecting shaft as the rotation axis.

[0014] In the technical solution, by enabling the motor bracket to rotate relative to the fixed bracket with the connecting shaft as the rotation axis, the drive motor, lead screw, and latch mounted on the motor bracket are rotated synchronously, thereby increasing the rotation range of the latch and thus increasing the rotation range of the seat back.

[0015] In some embodiments of this application, the latch includes a body and an insertion part. The body is located within the receiving space and connected to a lead screw. The insertion part is connected to the side of the body facing the slide groove, and the end of the insertion part away from the body passes through the slide groove and is connected to the seat back.

[0016] In the technical solution, the main body is located in the receiving space and connected to the lead screw. The insertion part passes through the slide groove and is connected to the seat back, so that the latch can convert the rotation of the lead screw into the linear movement of the latch along the slide groove, thereby realizing the angle adjustment of the seat back.

[0017] In some embodiments of this application, one end of the slide groove along its length is located near the drive motor, and the other end of the slide groove along its length is located near the end of the lead screw away from the drive motor.

[0018] In the technical solution, one end of the slide groove along its length is close to the drive motor, and the other end is close to the end of the lead screw away from the motor. This ensures that the movement range of the latch in the slide groove matches the effective transmission range of the lead screw, thereby ensuring that the latch can fully utilize the transmission stroke of the lead screw to achieve the maximum movement distance, thus providing a more sufficient angle adjustment range for the seat back.

[0019] Secondly, this application provides a vehicle, comprising: Body; A seat located inside the vehicle body; the seat includes a base and a seat back; the lower end of the seat back is rotatably connected to the base; The seat back angle adjustment mechanism is the same as the aforementioned seat back angle adjustment mechanism; the seat back angle adjustment mechanism is located near the upper end of the seat back compared to the lower end of the seat back; wherein, the fixing bracket is connected to the vehicle body and the latch is connected to the seat back.

[0020] In this technical solution, the seat back is adjusted using an adjustment mechanism to ensure that the angle of the seat back meets the seating posture requirements of the driver and passengers, thereby providing effective support for their backs and waists and alleviating fatigue caused by long-term vehicle travel. By placing the adjustment mechanism near the upper part of the seat back, the angle adjustment is achieved by using the lower part of the seat back as a fulcrum. Only a small driving force is needed to rotate the seat back, reducing the power requirement of the drive motor and achieving energy saving and consumption reduction.

[0021] In some embodiments of this application, the two ends of the chute are at different heights along its length, and in the longitudinal direction of the vehicle, the end with the lower height is located behind the end with the higher height.

[0022] In the technical solution, when the adjustment mechanism is installed on the vehicle body, the two ends of the slide are at different heights in the length direction, and the lower height end is located behind the higher height end in the front-rear direction of the vehicle. This allows the latch to move along the slide not only to achieve displacement in the front-rear direction, but also to change in height, so that the seat back can better conform to the curve of the human back and improve the comfort of long-distance travel.

[0023] In some embodiments of this application, the latch moves along a slide to allow the seat back to rotate between a first position and a second position; the rotation range of the seat back is 15° to 20°.

[0024] In the technical solution, the rotation range of the seat back is 15° to 20° to meet the user's needs in different scenarios, while avoiding the decrease in seat structural stability caused by excessive rotation angle and excessive seat space occupation, or insufficient adjustment flexibility caused by excessive angle.

[0025] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the seat back angle adjustment mechanism in the first position according to the embodiment of this application; Figure 2 This is a schematic diagram of the seat back angle adjustment mechanism in the second position according to an embodiment of this application; Figure 3 This is an exploded view of a seat back angle adjustment mechanism according to an embodiment of this application; Figure 4 This is a schematic diagram of the latch structure in the seat back angle adjustment mechanism according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the seat back angle adjustment mechanism according to the embodiments of this application, in which the drive motor and the lead screw are mounted on the motor bracket; Figure 6 This is a schematic diagram of the structure of the seat back angle adjustment mechanism according to the embodiments of this application, when the drive motor and the lead screw are installed on the motor bracket at another angle; Figure 7 This is a schematic diagram of the structure of the fixed bracket in the seat back angle adjustment mechanism according to the embodiments of this application; Figure 8 This is a structural schematic diagram of another angle of the fixed bracket in the seat back angle adjustment mechanism according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the seat back angle adjustment mechanism according to the embodiment of this application when it is installed on the seat back; Figure 10 This is a comparative schematic diagram of the seat backrest in a vehicle according to an embodiment of this application at different angles.

[0027] In the above figures: 100, fixing bracket; 200, lead screw; 300, guide slide column; 400, latch; 500, drive motor; 600, connecting shaft; 700, fastener; 800, seat back. 101. Slide groove; 102. Accommodation space; 103. Mounting hole; 104. Second connection hole; 110. Motor bracket; 120. Stable bracket; 130. Fixed bracket; 111. First connecting plate; 112. Second connecting plate; 113. Third connecting plate; 114. Fourth connecting plate; 131. Connecting part; 132. Fixing hole; 133. Connecting groove; 410. Main body; 420. Insertion part; 401. Threaded hole; 402. Through hole; 801, First plane; 802, Second plane. Detailed Implementation

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0033] It should be noted that in the automotive field, the backrests of the driver's seat and the front passenger seat can usually be adjusted in angle, and the adjustment range is relatively large. However, the angle of the rear seat backrest is usually fixed or has a very small adjustment range. As a result, the rear seat backrest cannot provide effective support for the back and waist of the driver and passengers, reducing the riding comfort of the passengers.

[0034] As consumers increasingly demand higher levels of vehicle comfort, people are paying more and more attention to the adjustment of the rear seat backrest angle. Some vehicles are equipped with adjustment mechanisms for the rear seat backrest angle. Some use multi-link structures for adjustment, some use motor-driven lead screws for adjustment, and some use high-adjustment motors for adjustment. Although these adjustment mechanisms can all achieve seat backrest adjustment, they all have some drawbacks. For example, lead screw adjustment has a small adjustment range, mostly 0-10°, while multi-link structures are complex, heavy, and require a large installation space. High-adjustment motor backrest adjustment mechanisms are complex in structure, require parts to be precision stamped, resulting in high costs. At the same time, the backlash caused by gear motors is difficult to eliminate, and they occupy a large space and are difficult to install.

[0035] Furthermore, in existing seat back angle adjustment mechanisms, the latches and lock cylinders that connect to the seat back are usually suspended, which not only reduces the connection effect between the seat back angle adjustment mechanism and the seat back, but also results in poor overall stability of the seat back angle adjustment mechanism. The stability and smoothness of the seat back are intertwined when adjusting the angle, which cannot well meet the angle adjustment requirements of the seat back.

[0036] Based on this, this application proposes a seat back angle adjustment mechanism and vehicle, which realizes seat back angle adjustment through the cooperation of a fixed frame, a drive motor, a lead screw and a latch. The overall structure is simple and compact and occupies little space; and the side wall with the slide groove can support the latch, the connection between the latch and the seat back is good, and the overall structure has good stability.

[0037] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0038] As attached Figures 1 to 10 As shown in an illustrative embodiment of the seat backrest angle adjustment mechanism of this application, the seat backrest angle adjustment mechanism includes a fixing frame 100, a drive motor 500, a lead screw 200, and a latch 400; the fixing frame 100 is connected to the vehicle; the fixing frame 100 is used to mount the drive motor 500 and support the rotation of the lead screw 200, and a receiving space 102 is defined within the fixing frame 100; the fixing frame 100 is provided with a sliding groove 101, which is located on the side for forming the receiving space 102. On the wall; the drive motor 500 is mounted on the fixed frame 100 and located outside the receiving space 102; the lead screw 200 is connected to the output shaft of the drive motor 500; one end of the lead screw 200 away from the drive motor 500 extends into the receiving space 102 and is rotatably connected to the fixed frame 100; one end of the latch 400 in the length direction is located in the receiving space 102 and is threadedly connected to the lead screw 200, and the other end of the latch 400 in the length direction passes through the slide groove 101 and is located outside the receiving space 102 and connected to the seat back 800.

[0039] The drive motor 500 drives the lead screw 200 to rotate, and the latch 400 converts the rotational motion of the lead screw 200 into the linear motion of the latch 400 along the slide groove 101. The latch 400 drives the upper end of the seat back 800 to move, so that the seat back 800 rotates with the lower end as the axis, thereby realizing the angle adjustment of the seat back 800.

[0040] In some embodiments, the drive motor 500 is mounted to the motor bracket 110 by bolts or screws.

[0041] The axial direction of the lead screw 200 is set in the same direction as the axial direction of the output shaft of the drive motor 500, so that the output shaft of the drive motor 500 can be directly connected to the lead screw 200 without going through other transmission components, which simplifies the overall structure and also shortens the power transmission path.

[0042] In some embodiments, the receiving space 102 is a receiving cavity, the slide groove 101 is provided on the side wall of the receiving cavity, the body 410 is provided in the receiving cavity, and at least a portion of the structure of the lead screw 200 extends into the receiving cavity so that the body 410 is connected to the lead screw 200.

[0043] It should be noted that the receiving cavity can be a closed chamber on all sides, or a chamber with openings on one or more sides; the receiving cavity is preferably a chamber with an opening only at the bottom.

[0044] like Figures 1-3 As shown, a guide slide post 300 is installed on the fixed frame 100. The guide slide post 300 is located in the receiving space 102 and is arranged in the same direction as the lead screw 200. The latch 400 is provided with a through hole 402 for the guide slide post 300 to pass through. The latch 400 can slide along the guide slide post 300 to guide the latch 400 to slide, so as to avoid the latch 400 from deflecting or shaking due to the rotation of the lead screw 200 during the movement of the latch 400. This ensures that the latch 400 can move smoothly, thereby ensuring the smoothness and stability of the seat back 800 angle adjustment, reducing the jamming or abnormal noise during the adjustment process, improving the user experience, and also reducing the wear of components caused by misalignment, extending the service life of the adjustment mechanism.

[0045] Preferably, such as Figures 3-6 As shown, there are two guide slides 300. One guide slide 300 is located at one end of the latch 400 that passes through the slide groove 101, and the other guide slide 300 is located at the end of the latch 400 that is connected to the lead screw 200.

[0046] like Figure 4 As shown, the latch 400 includes a body 410 and an insertion part 420. The body 410 is located in the receiving space 102 and connected to the lead screw 200. The insertion part 420 is connected to the side of the body 410 facing the slide groove 101. The end of the insertion part 420 away from the body 410 passes through the slide groove 101 and is connected to the seat back 800. A through hole 402 is provided on the body 410 so that the body 410 slides along the guide slide post 300.

[0047] It should be noted that the size of the body 410 is larger than the size of the insertion part 420, so as to prevent the body 410 from passing through the slide groove 101 and causing the latch 400 to disengage from the slide groove 101, thus ensuring the reliability of the latch 400 sliding along the slide groove 101.

[0048] like Figure 4 As shown, the main body 410 is provided with a threaded hole 401, which is used for the lead screw 200 to pass through. At the same time, the main body 410 can be threadedly connected to the lead screw 200 so that the latch 400 can convert the rotational movement of the lead screw 200 into the linear movement of the insertion part 420 along the slide groove 101, thereby realizing the angle adjustment of the seat back 800.

[0049] In some embodiments, the bottom of the body 410 is inclined upward toward the fixed bracket 130, so that the body 410 has a trapezoidal structure, thereby reducing the size of the body 410 and making it easier for the body 410 to be arranged in the receiving space 102.

[0050] It should be noted that the end of the main body 410 connected to the insertion part 420 has a larger size, while the end of the main body 410 facing the fixed bracket 130 has a smaller size. This is to make the end of the main body 410 connected to the insertion part 420 stronger, so that the main body 410 can support the insertion part 420, increase the strength of the insertion part 420, and enable the insertion part 420 to better drive the seat back 800 to move, thereby increasing the smoothness and stability of the seat back 800 angle adjustment.

[0051] like Figure 2 and Figure 3 As shown, the fixing bracket 100 includes a motor bracket 110 and a stabilizing bracket 120. The motor bracket 110 and the stabilizing bracket 120 are arranged opposite each other along the length direction of the latch 400, and the motor bracket 110 and the stabilizing bracket 120 together define a receiving space 102. The sliding groove 101 is provided on the stabilizing bracket 120, the lead screw 200 is located on the side of the stabilizing bracket 120 facing the motor bracket 110, and the drive motor 500 is mounted on the motor bracket 110.

[0052] By mounting the drive motor 500 on the motor bracket 110 and setting the slide groove 101 on the stabilizing bracket 120, the motor bracket 110 provides stable mounting support for the drive motor 500, and the stabilizing bracket 120 supports the latch 400, so that the fixing frame 100 is subjected to uniform force and stress concentration is avoided on the motor bracket 110 or the stabilizing bracket 120, thereby ensuring the stability of the overall structure.

[0053] In some embodiments, such as Figure 5 and Figure 6 As shown, the motor bracket 110 is provided with a mounting hole 103, which is used for the guide slide 300 to pass through so that the guide slide 300 can be installed on the motor bracket 110, thereby facilitating the connection between the latch 400 and the guide slide 300.

[0054] like Figure 2 and Figure 3 As shown, the mounting bracket 100 also includes a mounting bracket 130. The mounting bracket 130 is located on the side of the motor bracket 110 away from the stabilizing bracket 120. The side of the motor bracket 110 away from the stabilizing bracket 120 is connected to the mounting bracket 130. The side of the stabilizing bracket 120 facing the motor bracket 110 is connected to the mounting bracket 130. The mounting bracket 130 is connected to the vehicle to increase the strength of the motor bracket 110, thereby ensuring the reliability and stability of the movement of the latch 400.

[0055] By connecting the fixed bracket 130 to the side of the motor bracket 110 away from the stabilizing bracket 120 and the side of the stabilizing bracket 120 facing the motor bracket 110 respectively, the motor bracket 110 is positioned between the fixed bracket 130 and the stabilizing bracket 120. This not only protects the motor bracket 110 by using the stabilizing bracket 120 and the fixed bracket 130, thereby protecting the lead screw 200 and the body 410 installed on the motor bracket 110, but also increases the overall structural strength and rigidity of the fixed bracket 100. At the same time, it also makes the overall structure of the adjustment mechanism more compact, thus facilitating the arrangement of the adjustment mechanism in the vehicle.

[0056] The motor bracket 110, the fixed bracket 130 and the stabilizing bracket 120 are detachably connected to each other so that the fixed bracket 100 is a split structure, which makes it convenient to place the lead screw 200 and the body 410 in the receiving space 102 and facilitates the assembly of each component.

[0057] In some embodiments, the length directions of the fixed bracket 130, the stabilizing bracket 120, and the motor bracket 110 are all in the same direction as the length direction of the lead screw 200, so that the accommodating space 102 defined by the stabilizing bracket 120 and the motor bracket 110 can better accommodate the lead screw 200 while keeping the size small.

[0058] It should be noted that the length direction of the lead screw 200 is also the axial direction of the lead screw 200.

[0059] like Figure 7 and Figure 8 As shown, the fixed bracket 130 has connecting parts 131 at both ends of its length direction. The connecting parts 131 are located on the side of the fixed bracket 130 facing the stabilizing bracket 120. The two ends of the stabilizing bracket 120 are connected to the two connecting parts 131 respectively, so that the stabilizing bracket 120 and the fixed bracket 130 are connected to each other.

[0060] It should be noted that the stabilizing bracket 120 and the fixed bracket 130 can be connected by riveting, bolts, or screws. Figure 7 and Figure 8 As shown, the fixed bracket 130 is provided with a fixing hole 132, and bolts or screws are used to connect the fixed bracket 130 to the vehicle body through the fixing hole 132.

[0061] The fixing holes 132 are usually set in multiples, and the multiple fixing holes 132 are set one-to-one with multiple bolts or multiple screws, so that the fixing bracket 130 is connected to the vehicle body by multiple bolts or multiple screws, thereby increasing the firmness of the connection between the fixing bracket 130 and the vehicle body.

[0062] Preferably, there are four fixing holes 132 located at the four corners of the fixing bracket 130 to increase the firmness of the connection between the fixing bracket 130 and the vehicle body, and at the same time to ensure that the fixing bracket 130 is subjected to force evenly and to avoid stress concentration in the fixing bracket 130.

[0063] The drive motor 500 is connected to a connecting shaft 600, which is used to connect the drive motor 500 and the fixed bracket 130. The drive motor 500 is provided with a first connecting hole for the connecting shaft 600 to pass through, so that the connecting shaft 600 passes through the drive motor 500 and connects to the fixed bracket 130.

[0064] In some embodiments, the connecting shaft 600 is connected to the connecting portion 131.

[0065] In some embodiments of this application, the motor bracket 110 can rotate relative to the fixed bracket 130 about the connecting shaft 600 as the rotation axis to increase the rotation range of the latch 400, thereby increasing the rotation range of the seat back 800.

[0066] Specifically, the motor bracket 110 is connected to a fastener 700, and the fixed bracket 130 is provided with a connecting groove 133 for the fastener 700 to pass through, and the fastener 700 can slide along the connecting groove 133; wherein, the connecting groove 133 is an arc-shaped groove, and the center of the arc of the connecting groove 133 is concentric with the connecting shaft 600, so that the motor bracket 110 can rotate relative to the fixed bracket 130 along the connecting groove 133 with the connecting shaft 600 as the axis of rotation.

[0067] When the fastener 700 slides in the connecting groove 133, the motor bracket 110, the drive motor 500 and the lead screw 200 mounted on the motor bracket 110, and the latch 400 mounted on the lead screw 200 slide synchronously, so that the motor bracket 110, the drive motor 500, the lead screw 200 and the latch 400 rotate relative to the fixed bracket 130, thereby increasing the rotation range of the latch 400, and thus increasing the rotation range of the seat back 800.

[0068] It should be noted that the fastener 700 located in the connecting groove 133 can not only guide the motor bracket 110 to rotate relative to the fixed bracket 130, but also realize the connection between the motor bracket 110 and the fixed bracket 130.

[0069] It should also be noted that in some embodiments, in order to ensure the reliability of the movement of the latch 400, after the motor bracket 110 rotates to the position, the motor bracket 110 and the fixed bracket 130 are fastened together by the fastener 700, and then the drive motor 500 drives the latch 400 to rotate, so that the seat back 800 automatically adjusts its angle under the action of the drive motor 500.

[0070] In addition, it should be noted that the connecting groove 133 is preferably an oblong hole.

[0071] like Figure 5 and Figure 6 As shown, the motor bracket 110 is provided with a second connecting hole 104, which is located on the side of the motor bracket 110 facing the fixed bracket 130. The second connecting hole 104 and the connecting groove 133 are correspondingly provided, and the fastener 700 is provided in both the second connecting hole 104 and the connecting groove 133 so that the motor bracket 110 and the fixed bracket 130 can be connected to each other.

[0072] It should be noted that fastener 700 can also be a bolt or screw.

[0073] To increase the firmness of the connection between the motor bracket 110 and the fixed bracket 130 and the stability of the rotation of the motor bracket 110 relative to the fixed bracket 130, multiple second connecting holes 104 and connecting slots 133 are usually provided, with multiple second connecting holes 104 and multiple connecting slots 133 being provided one-to-one.

[0074] Preferably, there are two second connecting holes 104 and two connecting slots 133, with the two second connecting holes 104 and the two connecting slots 133 corresponding one-to-one, so as to increase the firmness of the connection between the motor bracket 110 and the fixed bracket 130, while improving the connection efficiency between the motor bracket 110 and the fixed bracket 130 and reducing the connection cost.

[0075] It should be noted that a bushing is provided at the connecting groove 133 to protect the fixed bracket 130, so as to prevent wear, deformation or thread damage to the hole wall of the connecting groove 133 during the installation, disassembly or long-term use of the fastener 700, thereby extending the service life of the fixed bracket 130. In addition, the bushing can enhance the stability and coaxiality of the connection between the motor bracket 110 and the fixed bracket 130, and compensate for the minor deviations that may exist between the second connecting hole 104 and the connecting groove 133 during processing or assembly through its own structural precision. Furthermore, the bushing can also buffer vibration and disperse pressure. When the drive motor 500 vibrates during operation, it reduces the force of vibration transmitted to the fixed bracket 130 through the fastener 700. At the same time, it can also disperse the local pressure of the fastener 700 on the hole wall of the connecting groove 133, preventing the fixed bracket 130 from cracking or other failures due to excessive local stress.

[0076] In some embodiments, such as Figure 5 and Figure 6As shown, the motor bracket 110 includes a first connecting plate 111, a second connecting plate 112, and a third connecting plate 113. The first connecting plate 111 is connected to the fixed bracket 130. The second connecting plate 112 and the third connecting plate 113 are respectively connected to the two ends of the first connecting plate 111 along its length and are located on the side of the first connecting plate 111 away from the fixed bracket 130. The drive motor 500 is connected to the side of the second connecting plate 112 away from the third connecting plate 113. The output shaft of the drive motor 500 passes through the second connecting plate 112 and is connected to the lead screw 200. The end of the lead screw 200 away from the drive motor 500 is rotatably connected to the third connecting plate 113.

[0077] It should be noted that the second connecting hole 104 is provided on the first connecting plate 111 so that the first connecting plate 111 is connected to the fixed bracket 130; the second connecting plate 112 and the third connecting plate 113 are respectively provided with mounting holes 103 so that the guide slide 300 passes through the second connecting plate 112 and the third connecting plate 113.

[0078] Furthermore, such as Figure 5 and Figure 6 As shown, the motor bracket 110 also includes a fourth connecting plate 114. The length direction of the fourth connecting plate 114 is arranged in the same direction as the length direction of the first connecting plate 111. The fourth connecting plate 114 is connected to the upper end of the first connecting plate 111, and the two ends of the length direction of the fourth connecting plate 114 are connected to the second connecting plate 112 and the third connecting plate 113 respectively.

[0079] It should be noted that the receiving space 102, which is defined by the first connecting plate 111, the second connecting plate 112, the third connecting plate 113, the fourth connecting plate 114, and the stabilizing bracket 120, is a receiving cavity with an opening only at the bottom. This provides better protection for the main body 410, the lead rod 200, and the guide slide column 300 located in the receiving space 102, preventing dust and other contaminants from contacting the main body 410, the lead rod 200, or the guide slide column 300. This avoids jamming when the main body 410 moves relative to the lead rod 200 or the guide slide column 300, thereby ensuring the accuracy and stability of the seat back 800 angle adjustment. One end of the slide groove 101 along its length is positioned close to the drive motor 500, and the other end of the slide groove 101 along its length is positioned close to the end of the lead screw 200 away from the drive motor 500, so that the range of movement of the latch 400 within the slide groove 101 matches the effective transmission range of the lead screw 200, thereby ensuring that the latch 400 can fully utilize the transmission stroke of the lead screw 200 to achieve the maximum movement distance, thus providing a more sufficient angle adjustment range for the seat back 800.

[0080] Based on the aforementioned seat backrest 800 angle adjustment mechanism, this application also provides a vehicle, including a vehicle body, a seat, and a seat backrest 800 angle adjustment mechanism; the seat is disposed inside the vehicle body; the seat includes a base and a seat backrest 800; the lower end of the seat backrest 800 is rotatably connected to the base; compared to the lower end of the seat backrest 800, the seat backrest 800 angle adjustment mechanism is disposed near the upper end of the seat backrest 800; wherein, the fixing bracket 100 is connected to the vehicle body, and the latch 400 is connected to the seat backrest 800.

[0081] By using an adjustment mechanism to adjust the seat back 800, the angle of the seat back 800 can meet the seating posture requirements of the driver and passengers, thereby providing effective support for the back and waist of the driver and passengers and relieving fatigue caused by long-term vehicle travel. By placing the adjustment mechanism near the upper end of the seat back 800, the angle adjustment can be achieved by using the lower end of the seat back 800 as a fulcrum. Only a small driving force is needed to rotate the backrest, reducing the power requirement of the drive motor 500 and achieving energy saving and consumption reduction.

[0082] The two ends of the slide 101 have different heights along its length, and in the longitudinal direction of the vehicle, the lower end is located behind the higher end. For ease of description, the higher end of the slide 101 is called the high-height end, and the lower end of the slide 101 is called the low-height end.

[0083] By installing the adjustment mechanism on the vehicle body, the two ends of the slide 101 are at different heights along its length, and the lower height end is located behind the higher height end in the front-to-back direction of the vehicle. This allows the latch 400 to move along the slide 101, not only in the front-to-back direction but also in the height direction, so that the seat back 800 can better conform to the curve of the human back and improve the comfort of long-distance travel.

[0084] In some embodiments, the end of the slide 101 near the drive motor 500 is lower than the end of the slide 101 away from the drive motor 500, so that the drive motor 500 is positioned close to the rear side of the seat back 800. The rear side of the seat back 800 is usually close to the trunk, and the front side of the seat back 800 is usually close to the rear door. Positioning the drive motor 500 close to the rear side of the seat back 800 can avoid interference between the drive motor 500 and the rear door, thereby facilitating the arrangement of the drive motor 500.

[0085] The latch 400 moves along the slide 101 to allow the seat back 800 to rotate between a first position and a second position.

[0086] In some embodiments, the insertion part 420 moves to one end of the slide 101 away from the drive motor 500, and the seat back 800 is in a first position, at which time the angle between the seat back 800 and the horizontal direction is large; the insertion part 420 moves to one end of the slide 101 close to the drive motor 500, and the seat back 800 is in a second position, at which time the angle between the seat back 800 and the horizontal direction is small.

[0087] like Figure 9 and Figure 10 As shown, the heights at both ends of the connecting groove 133 are also different. The fastener 700 slides in the connecting groove 133, which can adjust the rotation angle of the latch 400, thereby adjusting the rotation of the seat back 800 and increasing the rotation range of the seat back 800.

[0088] like Figure 10 As shown, when the seat back 800 is in the first position, a first plane 801 is formed on the rear side of the seat back 800; when the seat back 800 is in the second position, a second plane 802 is formed on the rear side of the seat back 800, and the second plane 802 and the first plane 801 have an included angle α, the value of which is in the range of 15° to 20°.

[0089] The seat backrest has a rotation range of 15° to 20° to meet the user's needs in different scenarios, while avoiding the decrease in seat structural stability caused by excessive rotation angle, excessive seat space occupation, or insufficient adjustment flexibility caused by excessive angle.

[0090] Through the description of several embodiments of the seat backrest 800° angle adjustment mechanism and vehicle of this application, it can be seen that the seat backrest 800° angle adjustment mechanism and vehicle embodiments of this application have at least one or more of the following advantages: 1. The drive motor 500 drives the lead screw 200 to rotate. The latch 400 converts the rotational motion of the lead screw 200 into the linear motion of the latch 400 along the slide groove 101. The latch 400 drives the upper end of the seat back 800 to move, so that the seat back 800 rotates with the lower end as the axis, thereby realizing the angle adjustment of the seat back 800. The overall structure is simple and the transmission efficiency is high.

[0091] 2. The fixing frame 100 defines the receiving space 102, so that the body 410 and the lead rod 200 are located in the receiving space 102. It can protect the body 410 and the lead rod 200. The insertion part 420 passes through the slide groove 101 and connects with the seat back 800. The side wall of the slide groove 101 can provide support for the latch 400. This not only increases the strength of the latch 400 and the reliability and stability of the rotation of the seat back 800, but also makes the overall structure compact, occupies little space, and has good overall structural stability.

[0092] 3. Placing the drive motor 500 outside the accommodating space 102 can avoid the internal space constraints affecting the motor operation and facilitate the inspection and maintenance of the drive motor 500.

[0093] 4. By making the motor bracket 110 rotate relative to the fixed bracket 130 via the connecting shaft 600 as the rotation axis, the rotation range of the latch 400 and the seat back 800 is increased. The rotation range of the seat back 800 is 15° to 20° to meet the user's needs in different scenarios, while avoiding the decrease in seat structural stability and excessive space occupation of the seat due to excessive rotation angle, or the lack of adjustment flexibility due to excessive angle.

[0094] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A seat back angle adjustment mechanism, characterized in that, include: A mounting bracket (100) for connection to a vehicle; a receiving space (102) is defined within the mounting bracket (100); a groove (101) is provided on the mounting bracket (100), the groove (101) being located on the side wall for forming the receiving space (102); A drive motor (500) is mounted on the fixture (100) and located outside the receiving space (102); A lead screw (200) is connected to the output shaft of the drive motor (500); one end of the lead screw (200) away from the drive motor (500) extends into the receiving space (102) and is rotatably connected to the fixing frame (100); A latch (400) has one end located within the receiving space (102) and threadedly connected to the lead screw (200) in the longitudinal direction, and the other end of the latch (400) passes through the slide groove (101) located outside the receiving space (102) and connected to the seat back (800).

2. The seat back angle adjustment mechanism according to claim 1, characterized in that, The fixing frame (100) is equipped with a guide slide (300), which is located in the receiving space (102) and is arranged in the same direction as the lead screw (200). The latch (400) is provided with a through hole (402) for the guide slide (300) to pass through, so that the latch (400) can slide along the guide slide (300).

3. The seat back angle adjustment mechanism according to claim 1, characterized in that, The fixing frame (100) includes a motor bracket (110) and a stabilizing bracket (120). The motor bracket (110) and the stabilizing bracket (120) are arranged opposite to each other along the length direction of the latch (400). The motor bracket (110) and the stabilizing bracket (120) together define the receiving space (102). The slide groove (101) is provided on the stabilizing bracket (120). The lead screw (200) is located on the side of the stabilizing bracket (120) facing the motor bracket (110). The drive motor (500) is mounted on the motor bracket (110).

4. The seat back angle adjustment mechanism according to claim 3, characterized in that, The mounting bracket (100) further includes a fixing bracket (130), which is located on the side of the motor bracket (110) away from the stabilizing bracket (120). The side of the motor bracket (110) away from the stabilizing bracket (120) is connected to the fixing bracket (130), and the side of the stabilizing bracket (120) facing the motor bracket (110) is connected to the fixing bracket (130). The fixing bracket (130) is connected to the vehicle.

5. The seat back angle adjustment mechanism according to claim 4, characterized in that, The drive motor (500) is connected to the fixed bracket (130) via a connecting shaft (600); The motor bracket (110) is connected to a fastener (700), and the fixed bracket (130) is provided with a connecting groove (133) for the fastener (700) to pass through, and the fastener (700) can slide along the connecting groove (133); The connecting groove (133) is an arc-shaped groove, and the center of the arc of the connecting groove (133) is concentric with the connecting shaft (600).

6. The seat back angle adjustment mechanism according to claim 1, characterized in that, The latch (400) includes a body (410) and an insertion part (420). The body (410) is located in the receiving space (102) and connected to the lead screw (200). The insertion part (420) is connected to the side of the body (410) facing the slide (101). The end of the insertion part (420) away from the body (410) passes through the slide (101) and is connected to the seat back (800).

7. The seat back angle adjustment mechanism according to claim 1, characterized in that, One end of the slide groove (101) along its length is located close to the drive motor (500), and the other end of the slide groove (101) along its length is located close to the end of the lead screw (200) away from the drive motor (500).

8. A vehicle, characterized in that, include: Body; A seat is provided inside the vehicle body; the seat includes a base and a seat back (800); the lower end of the seat back (800) is rotatably connected to the base; The seat back angle adjustment mechanism is as described in any one of claims 1 to 7; the seat back angle adjustment mechanism is disposed near the upper end of the seat back (800) compared to the lower end of the seat back (800); wherein the fixing bracket (100) is connected to the vehicle body and the latch (400) is connected to the seat back (800).

9. The vehicle according to claim 8, characterized in that, The two ends of the chute (101) are at different heights along its length, and in the longitudinal direction of the vehicle, the end with the lower height is located behind the end with the higher height.

10. The vehicle according to claim 8, characterized in that, The latch (400) moves along the slide (101) to allow the seat back (800) to rotate between a first position and a second position; the rotation range of the seat back (800) is 15° to 20°.

Images