Swing mechanism and seat with swing function

Abstract

The invention provides a swing mechanism and a seat with a swing function. The swing mechanism comprises a swing frame and an adjusting assembly. The swing frame is hinged to the base at a preset point position. The adjusting assembly is provided with a first adjusting component and a second adjusting component which are arranged at intervals in the first direction, and the first adjusting component and the second adjusting component are connected with the two ends of the swing frame correspondingly. The first adjusting component drives the swing frame to rotate clockwise or anticlockwise around the preset point position along one end of the first direction, and meanwhile, the second adjusting component drives the swing frame to rotate clockwise or anticlockwise around the preset point position along the other end of the first direction, so that the swing frame rotates and swings around the preset point position. The driving part is directly used for driving the sliding block to horizontally move through the lead screw, the swing motion of the swing frame is achieved through the first connecting rod and the second connecting rod, equivalently, the swing angle of the swing frame is driven by pure linear motion of the sliding block, in the motion process, the angle of the lead screw does not change, the strength upper limit is high, and control is convenient.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a swing mechanism and a seat with a swing function. Background Technology

[0002] As the market explores the diversification of car seat functions, seat rocking functionality is gradually gaining popularity. This function adjusts the seat posture to achieve regular or adaptive rocking, aiming to provide better seating support, comfort, and entertainment. Ideally, the seat rocking mechanism can also provide lateral support to occupants through adaptive posture adjustment when the vehicle is making sharp turns or driving on bumpy roads, thereby reducing vibration and ride jolts.

[0003] Currently, the structure used in the industry to realize the left and right rocking function of a seat usually adopts a complex multi-link mechanism, which uses multiple links to achieve the rocking motion of the seat with multiple degrees of freedom or a single degree of freedom.

[0004] However, the aforementioned existing technical solutions have obvious drawbacks. They have a large number of structural parts, require a large amount of space for arranging the multi-part swing structure, have a low strength limit, and are not reliable enough.

[0005] Therefore, there is an urgent need for a swing mechanism with a simple structure, small footprint, and high reliability, as well as a seat with a swing function, to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0006] The purpose of this application is to provide a swing mechanism and a seat with a swing function. To a certain extent, the drive unit directly drives the slider to move horizontally through a lead screw parallel to the bottom of the car, and finally realizes the swing motion of the swing frame through the first link and the second link. It is equivalent to the swing angle of the swing frame being driven by the pure linear motion of the slider. During the movement, the angle of the lead screw does not change, and the upper limit of strength is high and easy to control.

[0007] This application provides a swing mechanism suitable for a seat with a base, the swing mechanism comprising: A swing frame, hinged to the base at a preset point, allows the swing frame to rotate and swing around the preset point; and The adjustment assembly has a first adjustment member and a second adjustment member arranged at intervals along a first direction, wherein one of the first adjustment member and the second adjustment member is connected to one end of the swing frame along the first direction, and the other is connected to the other end of the swing frame along the first direction. The first adjusting component can drive one end of the swing frame along the first direction to rotate clockwise or counterclockwise around the preset point. At the same time, the second adjusting component can drive the other end of the swing frame along the first direction to rotate clockwise or counterclockwise around the preset point, so that the swing frame can rotate and swing around the preset point.

[0008] In the above technical solution, both the first adjusting member and the second adjusting member further include: The drive unit is fixed to the base; A transmission unit, connected to the output end of the drive unit, wherein the drive unit is capable of driving the transmission unit to move along a first direction; and The linkage part is hinged at one end to the transmission part and fixedly connected to the swing frame at the other end; When the driving part of the first adjusting member drives the transmission part to move in a direction away from or towards the second adjusting member, the linkage part rotates clockwise or counterclockwise, causing the side of the swing frame connected to the first adjusting member to rotate and swing around the preset point in a clockwise or counterclockwise direction. At the same time, when the driving part of the second adjusting member drives the transmission part to move in a direction towards or away from the first adjusting member, the linkage part rotates clockwise or counterclockwise, causing the side of the swing frame connected to the second adjusting member to rotate and swing around the preset point in a clockwise or counterclockwise direction.

[0009] In the above technical solution, the transmission unit further includes: A lead screw extends along the first direction and is connected to the output end of the drive unit, the drive unit being capable of driving the lead screw to rotate; and A slider is sleeved on the lead screw, and when the lead screw rotates counterclockwise or clockwise, the slider can move along the lead screw in a first direction.

[0010] In the above technical solution, the linkage further includes: A first connecting rod is connected to the slider via a pin, and the first connecting rod is rotatable about the pin; and The second link extends along the second direction and is fixedly connected to the swing frame and the first link, respectively. When the slider moves along the first direction, the first connecting rod rotates around the pin, and through the second connecting rod, it can drive the swing frame to rotate and swing around the preset point.

[0011] In the above technical solution, further, with the center of the base as the rotation center, the first adjusting member and the second adjusting member are 180° centrally rotated symmetrically.

[0012] In the above technical solution, the preset point is further located on a straight line passing through the center of the base.

[0013] In the above technical solution, the swing mechanism further includes a first reinforcing plate; One end of the first reinforcing plate is fixed to the base, and the other end extends from the base toward the pin shaft corresponding to the position of the pin shaft; The first reinforcing plate has a first oval hole that allows the pin to pass through and extends in a first direction.

[0014] In the above technical solution, the swing mechanism further includes a second reinforcing plate; the second reinforcing plate includes: The motherboard, fixed to the base, and extending along the second direction; and Connecting ear plates are respectively disposed at both ends of the main board along the second direction, so as to form a U-shaped structure with the main board; the connecting ear plates are provided with a second oval hole for the second connecting rod to pass through and extending along the third direction; the side wall of the second oval hole away from the preset point is an arc-shaped side wall.

[0015] In the above technical solution, the swing mechanism further includes a guide member, which includes: A fixing plate is sleeved on the lead screw and fixed to the base; and A guide rod extends along the first direction, with one end fixed to the fixing plate and the other end passing through the slider.

[0016] This application also provides a seat with a swing function, including a seat body, a base and a swing mechanism; The seat body is hinged to the base at the preset point via the swing frame, so that the two ends of the seat body along the first direction can rotate and swing relative to the base around the preset point via the swing frame.

[0017] Compared with the prior art, this application has the following beneficial effects: This application provides a swing mechanism suitable for a seat with a base, the swing mechanism comprising: A swing frame, hinged to the base at a preset point, allows the swing frame to rotate and swing around the preset point; and The adjustment assembly has a first adjustment member and a second adjustment member arranged at intervals along a first direction, wherein one of the first adjustment member and the second adjustment member is connected to one end of the swing frame along the first direction, and the other is connected to the other end of the swing frame along the first direction. The first adjusting component can drive one end of the swing frame along the first direction to rotate clockwise or counterclockwise around the preset point. At the same time, the second adjusting component can drive the other end of the swing frame along the first direction to rotate clockwise or counterclockwise around the preset point, so that the swing frame can rotate and swing around the preset point.

[0018] This application also provides a seat with a swing function, including a seat body, a base and a swing mechanism; The seat body is hinged to the base at the preset point via the swing frame, so that the two ends of the seat body along the first direction can rotate and swing relative to the base around the preset point via the swing frame.

[0019] In summary, the swing mechanism and swing-function seat provided in this application, by cleverly combining a single swing frame with dual adjustable components driven independently at both ends, completely overturns the complex structure of traditional multi-link systems. It significantly reduces the number of parts (reducing the number of links), has a high upper limit of structural strength, and can meet the strength requirements of the seat frame.

[0020] In addition, this application has lower space requirements in the height direction than multi-link systems, making it easier to match different frame designs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the swing mechanism provided in this application; Figure 2 A schematic diagram of the structure of the first adjusting member or the second adjusting member in the swing mechanism provided in this application; Figure 3 The swing mechanism provided in this application is applied to a seat. The schematic diagram of the swing mechanism facing the seat is shown (at this time, the vehicle is in a stable state and the swing frame is parallel to the base). Figure 4The swing mechanism provided in this application is applied to a seat. The schematic diagram of the swing mechanism facing the seat is shown (at this time, the vehicle is in a left-high-right-low state, and the swing frame is in a left-low-right-high state). Figure 5 The swing mechanism provided in this application is applied to a seat. The schematic diagram of the swing mechanism facing the seat is shown (at this time, the vehicle is in a left-low-right-high state, and the swing frame is in a left-high-right-low state). Figure 6 The corresponding seat with swing function provided in this application Figure 3 A schematic diagram of the structure under the current conditions; Figure 7 The seat with a swing function provided in this application, and corresponding to Figure 4 A schematic diagram of the structure under the current conditions; Figure 8 The seat with a swing function provided in this application, and corresponding to Figure 5 A schematic diagram of the structure under the current conditions; Figure 9 The curve showing the relationship between the lead screw stroke and the swing angle provided in this application.

[0023] Reference numerals: 101-Seat body; 102-Base; 103-Swing frame; 104-First direction; 105-Second direction; 106-Third direction; 107-Preset point; 201-First adjusting component; 202-Second adjusting component; 203-Drive unit; 206-Lead screw; 207-Slider; 208-First connecting rod; 209-Second connecting rod; 210-First reinforcing plate; 211-First oblong hole; 212-Second reinforcing plate; 213-Main board; 214-Connecting ear plate; 215-Second oblong hole; 216-Fixing plate; 217-Guide rod; 218-Pin. Detailed Implementation

[0024] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0026] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0027] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0028] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited by these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section referred to as such in the examples may also be referred to as the second component, part, region, layer, or section.

[0029] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., swung 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0031] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0032] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0033] Example 1 Combination Figures 1 to 8 As shown, Embodiment 1 of this application provides a swing mechanism, which is applicable to, but not limited to, vehicle seats, especially passenger car seats that require left-right swinging function or adaptive lateral support. Its core design concept is to abandon the traditional complex multi-link linkage system and instead adopt a simple "dual-point drive, coordinated swinging" architecture.

[0034] Specifically, the swing mechanism includes a swing frame 103 and an adjustment assembly. The swing frame 103, as the direct actuator for adjusting the seat posture, is hinged to the seat base 102 at a preset point 107. This "hinge" can be a pivotal connection via a pivot shaft, or a swing connection via a flexible hinge or a spherical bearing. Through this hinge point, the swing frame 103 is given the freedom to rotate and swing around the preset point 107, which constitutes the rotation center of the entire swing mechanism.

[0035] Specifically, to address the issue of how to drive the swing frame 103 to swing smoothly, this application introduces an adjustment assembly. This adjustment assembly has a first adjustment member 201 and a second adjustment member 202 arranged at intervals along a first direction 104. It should be noted that the "first direction 104" described throughout this application, when applied to a vehicle seat, preferably corresponds to the width direction of the vehicle body, i.e., the left-right direction of the vehicle, thereby realizing the left-right swing function of the seat. Of course, depending on the actual application scenario, the first direction 104 can also refer to the front-back direction of the vehicle to realize the pitch swing of the seat; this is not a unique limitation.

[0036] Furthermore, one of the first adjusting member 201 and the second adjusting member 202 is connected to one end of the swing frame 103 along the first direction 104, and the other is connected to the other end of the swing frame 103 along the first direction 104. This symmetrical connection layout allows both ends of the swing frame 103 to be controlled by independent drive units. The core working principle of this application is that the first adjusting member 201 can drive the swing frame 103 to rotate clockwise or counterclockwise around a preset point 107 at one end along the first direction 104, and at the same time, the second adjusting member 202 can drive the swing frame 103 to rotate clockwise or counterclockwise around the preset point 107 at the other end along the first direction 104. By controlling the rotation direction of both ends to be the same and the rotation angle to match, the entire swing frame 103 can generate a stable angular displacement around the preset point 107, achieving a "seesaw" swing effect.

[0037] Compared with the multi-link linkage scheme mentioned in the background art, this embodiment decomposes a single large-stroke, high-load drive task into two small-stroke, low-load independent drive tasks, which significantly reduces the power demand of a single drive unit and the peak force of the transmission mechanism, thereby improving the overall lifespan and reliability of the system.

[0038] In this embodiment, in order to specifically implement the above-mentioned driving function, combined with Figure 2 As shown, the first adjusting member 201 and the second adjusting member 202 have the same structure, both including a driving part 203, a transmission part and a linkage part.

[0039] Specifically, the drive unit 203, serving as a power source, is preferably fixedly mounted on the base 102. This drive unit 203 can take various forms; considering the typically compact space under the seat, in this embodiment, it is preferably an integrated motor with a reducer, such as a planetary gear reducer motor or a worm gear reducer motor. When using a worm gear reducer motor, it has a self-locking characteristic, enabling it to maintain its posture after the seat has swung to any angle and the power has been cut off, without the need for an additional brake. Alternatively, a DC brushed or DC brushless motor can be used, which features high control precision and fast response speed.

[0040] Specifically, the transmission unit is connected to the output end of the drive unit 203, and its function is to smoothly convert the rotational motion output by the drive unit 203 into linear motion. The drive unit 203 can drive the transmission unit to reciprocate linearly along the first direction 104.

[0041] Specifically, the linkage is the key bridge connecting the transmission unit and the swing frame 103. One end of it is hinged to the transmission unit to achieve angle self-adaptation during motion conversion; the other end is fixedly connected to the swing frame 103, thereby converting the linear driving force of the transmission unit into torque acting on the end of the swing frame 103.

[0042] Using the above structure, and referring to Figure 3 As shown, when the drive unit 203 of the first adjusting member 201 drives its transmission unit to move away from the second adjusting member 202 (e.g., to the left), the left end of the swing frame 103 swings upward (or downward) around the preset point 107 through the transmission and rotation of the linkage unit. At the same time, the drive unit 203 of the second adjusting member 202 can work in coordination with the first adjusting member 201. The drive unit in the second adjusting member 202 drives the transmission unit to move towards the first adjusting member 201 (i.e., synchronously to the right), thereby causing the right end of the swing frame 103 to swing downward (or upward) around the preset point 107. The reverse is also true. This "away-to-near" linkage mode ensures that the swing frame 103 rotates purely around the preset point 107, rather than being translated or stuck due to unilateral lifting or lowering.

[0043] In this embodiment, in order to efficiently and accurately convert the rotational motion of the motor into the linear motion of the slider 207, combined with Figure 2 , Figure 3 As shown, the structure of the transmission unit is further defined in this embodiment. The transmission unit includes a lead screw 206 and a slider 207.

[0044] Specifically, the lead screw 206 extends along the width direction of the vehicle body (i.e., the first direction 104), and its input end is connected to the output end of the drive unit 203 (or the output end of the reducer) via a coupling or direct nesting. The drive unit 203 can drive the lead screw 206 to rotate forward or backward around its own axis. In this embodiment, the lead screw 206 is preferably a high-precision ball screw. Ball screws use rolling friction instead of sliding friction, and have the advantages of high transmission efficiency (up to 90% or more), high sensitivity, low wear, and long service life, which can well meet the needs of frequent and long-term seat rocking.

[0045] Specifically, the slider 207 has an internal thread raceway that matches the thread of the lead screw 206, and is fitted onto the lead screw 206 via circulating balls. According to the lead screw drive principle, when the lead screw 206 rotates in a counterclockwise or clockwise direction, the slider 207 can make precise linear movements on the lead screw 206 along the first direction 104.

[0046] It should be noted that, considering cost factors and varying noise sensitivities in different application scenarios, in this embodiment, the lead screw 206 can also be a standard trapezoidal lead screw or a triangular threaded lead screw. Although the transmission efficiency is slightly lower than that of a ball screw, it has the advantages of low manufacturing cost and a certain degree of self-locking capability (especially under small lead angle conditions).

[0047] Specifically, please refer to Figure 2 , Figure 3As shown, this embodiment provides a compact and direct force transmission linkage; the linkage includes a first link 208 and a second link 209.

[0048] In this design, the first connecting rod 208 serves as a force transmission element, with its first end hinged to the slider 207 via a pin 218. This hinged connection ensures that the linear motion of the slider 207 can be unrestrictedly converted into the oscillation of the first connecting rod 208. Further integration... Figure 1 and Figure 2 As shown, the first connecting rod 208 includes a first segment, a second segment, and a third segment; the first segment, the second segment, and the third segment are connected sequentially to form a U-shaped structure, wherein the first segment and the third segment are located on both sides of the slider 207 in the length direction of the vehicle body, and are rotatably connected to the slider 207 by pins 218; the second segment is fixedly connected to the second connecting rod 209.

[0049] The second link 209 extends along the second direction 105. In the coordinate system definition of this application, the second direction 105 is preferably a horizontal direction (i.e., the vehicle length direction) perpendicular to the first direction 104. One end of the second link 209 is fixedly connected to the swing frame 103 (e.g., by welding, threaded connection, or integral molding), and the other end is fixedly connected to the second end of the first link 208 (also by welding or threaded connection).

[0050] Using the structure of the first adjusting component (second adjusting component) described above, when the slider 207 is driven to move along the first direction 104, the fulcrum position of the first connecting rod 208 hinged to it undergoes horizontal displacement, forcing the first connecting rod 208 to rotate around the pin 218. Since the second connecting rod 209 is fixedly connected to the first connecting rod 208 and the swing frame 103, the rotation of the first connecting rod 208 will inevitably apply a torque to the swing frame 103 through the second connecting rod 209, thereby driving the entire swing frame 103 to rotate and swing around the preset point 107.

[0051] Furthermore, two swing frames 103 are provided, spaced apart along the length of the vehicle body and hinged to the base. The two ends of the second connecting rod 209 pass through the second oblong holes 215 along its length and are then fixedly connected to the swing frames 103 via a connecting plate (which extends along the height of the vehicle body, i.e., vertically). Preferably, the swing frames 103, the second connecting rod 209, and the connecting plate are integrally formed.

[0052] Preferably, the second connecting rod 209 is made of high-strength cold-drawn seamless steel tubing. The tubular structure has a higher section modulus of bending resistance for the same weight, effectively resisting the bending moment transmitted from the first connecting rod 208 and preventing deformation. It should also be noted that the cross-sectional shape of the second connecting rod 209 is not limited to a circle; it can also be rectangular, square, or an irregularly shaped hollow section to adapt to different installation spaces and force directions.

[0053] Combination Figure 9 As shown, the blue curve represents the motion curve between the second connecting rod and the lead screw in the first adjusting component, and the orange curve represents the motion curve between the second connecting rod and the lead screw in the second adjusting component. The two curves are completely symmetrical, indicating that the first and second adjusting components move synchronously. Furthermore, with the upper X-axis as the positive direction (representing clockwise rotation of the second connecting rod) and the lower X-axis as the negative direction (representing counter-clockwise rotation of the second connecting rod), the motion is... Figure 9 It can be seen that the slopes of the blue and orange curves are not straight lines, but curves, indicating that the relationship between the swing angle and the lead screw travel is not set according to a linear function. For example, when the second connecting rods in both the first and second adjusting components swing clockwise with a swing angle of 5°, the lead screw travel in the first adjusting component is 20mm, and the lead screw travel in the second adjusting component is 9.8mm. When the second connecting rods in both the first and second adjusting components swing counterclockwise with a swing angle of 5°, the lead screw travel in the first adjusting component is 9.8mm, and the lead screw travel in the second adjusting component is 20mm.

[0054] In this embodiment, in order to further improve the stability and mechanical properties of the structure of this application, combined with Figure 1 , Figure 6 As shown, the relative positions of the two adjusting members (the first adjusting member and the second adjusting member) are defined. Specifically, with the center of the base 102 as the center of rotation, the first adjusting member 201 and the second adjusting member 202 are arranged in a 180° central rotational symmetry.

[0055] The aforementioned 180° central rotational symmetry layout firstly ensures that the movement trajectories of the left and right adjustment components are completely mirror-symmetrical about the seat's centerline, allowing the controller to drive both motors with identical control commands (only in opposite directions), simplifying the control algorithm. Secondly, the symmetrical arrangement ensures that the masses of the two drive units 203 and the moving masses of the transmission components are symmetrical about the center, which helps reduce vibration excitation of the entire seat assembly. Finally, when the seat carries an occupant, the drive mechanisms on both sides experience uniform force, avoiding localized stress concentration caused by uneven loading.

[0056] In this embodiment, the hinge point (pin 218) between the first connecting rod 208 and the slider 207 is one of the areas where the force is most concentrated. Therefore, under long-term operation, the pin 218 needs to withstand the tension / compression from the first connecting rod 208. Based on this, a first reinforcing plate 210 is provided in this embodiment.

[0057] Still combined Figure 1 , Figure 2 As shown, one end of the first reinforcing plate 210 is fixed to the base 102, and the other end corresponds to the position of the pin 218, extending from the base 102 toward the pin 218. Furthermore, the first reinforcing plate 210 has a first oblong hole 211 through which the pin 218 passes, and the extending direction of the first oblong hole 211 is parallel to the first direction 104.

[0058] The aforementioned first oblong hole 211 provides auxiliary support and guidance for the pin 218. When the slider 207 drives the pin 218 to move horizontally, the pin 218 simultaneously slides within the first oblong hole 211. This is equivalent to adding an additional sliding fulcrum at the root of the first connecting rod 208, greatly enhancing the bending stiffness of the hinge point. Furthermore, the first oblong hole 211 ensures that the movement trajectory of the pin 218 is parallel to the first direction 104, which is consistent with the movement direction of the slider 207. Even if there is a slight radial clearance between the slider 207 and the lead screw 206, the first reinforcing plate 210 can forcibly correct the movement path of the pin 218, ensuring that the fulcrum of the first connecting rod 208 moves along a preset straight path.

[0059] It should also be noted that the first reinforcing plate can be integrated with the base 102 itself. For example, an inwardly folded support arm can be directly stamped on the side wall of the base 102, and a first oval hole 211 can be formed on the support arm. This integrated design eliminates the need for additional parts and saves assembly steps.

[0060] In this embodiment, the inventors of this application further considered the load-bearing capacity at the connection between the second link 209 and the swing frame 103. Especially when the seat comes to a sudden stop during high-speed swinging, a huge inertial force will be transmitted to the second link 209 through the swing frame 103, generating a significant impact. Therefore, a second reinforcing plate 212 is also provided in this embodiment.

[0061] Combination Figure 1 , Figure 6As shown, the second reinforcing plate 212 has an overall U-shaped structure. It includes a main plate 213 extending along the second direction 105, and connecting lugs 214 respectively disposed at both ends of the main plate 213 along the second direction 105. The main plate 213 is fixed to the base 102, forming the foundation of the entire reinforcing structure. The two connecting lugs 214 and the main plate 213 together form a U-shape, hugging the outside of the second connecting rod 209. Each connecting lug 214 has a second oblong hole 215 for the second connecting rod 209 to pass through. The extension direction of the second oblong hole 215 is defined as the third direction 106, which is the height direction of the vehicle body. Furthermore, a unique structural feature of the second oblong hole 215 is that its sidewall facing away from the preset point 107 is designed as an arc-shaped sidewall. Specifically, since the second connecting rod 209 rotates around the preset point 107, its movement trajectory is an arc-shaped path. Therefore, when the second reinforcing plate 212 is provided, the sidewall of the second oblong hole 215 is designed as an arc-shaped sidewall. Additionally, the second oblong hole 215 in the first adjusting member and the second oblong hole 215 in the second adjusting member are located on a circle centered at the preset point 107.

[0062] In this embodiment, although the lead screw theoretically has high transmission accuracy, in practical applications, the slider 207 will inevitably be subjected to a non-axial force (i.e., a component force perpendicular to the first direction 104) from the first connecting rod 208. This lateral force will cause the slider 207 to deflect relative to the lead screw 206, increasing the frictional resistance between the lead screw and the nut, accelerating wear, and possibly causing crawling, affecting the smoothness of low-speed movement.

[0063] In order to eliminate the above-mentioned hidden dangers, combined with Figure 1 and Figure 2 As shown, a guide member is also provided in this embodiment. The guide member includes a fixing plate 216 and a guide rod 217.

[0064] The fixing plate 216 is sleeved on the outside of the lead screw 206. The periphery of the fixing plate 216 is fastened to the base 102 by bolts, serving as a mounting base. The guide rod 217 is a smooth round rod that extends precisely along the first direction 104. One end of the guide rod 217 is fixed to the fixing plate 216, and the other end passes through the guide hole opened in the slider 207.

[0065] With this configuration, the slider 207 is forced to move along a straight track defined by the guide rod 217. Even under the lateral thrust of the first connecting rod 208, the slider 207 can only slide axially along the guide rod 217 and cannot rotate or radially displace around the lead screw 206. This ensures that the lead screw 206 only bears pure torque and not bending moment, greatly improving the stress condition of the lead screw 206 and extending its service life. At the same time, the precise linear guidance ensures that the motion trajectory of the fulcrum (pin 218) of the first connecting rod 208 is highly consistent with the theoretical trajectory, further improving the control accuracy of the swing angle.

[0066] It should also be noted that, in order to further improve the stability of the guide, the single guide rod 217 can be changed to a double guide rod 217. The two guide rods 217 are arranged in parallel and pass through the guide holes on both sides of the slider 207 respectively, forming a dual-axis guide system, which completely constrains all degrees of freedom of the slider 207, and only retains the axial movement degree of freedom.

[0067] In one optional manner in this embodiment, self-lubricating bushings can be provided at all hinge positions in the above structure to reduce the risk of wear and abnormal noise caused by long-term oscillation.

[0068] Example 2 Embodiment 2 provides a vehicle with significantly improved passenger comfort and cabin technology. Specifically, the vehicle includes seats and the swing mechanism described in Embodiment 1.

[0069] Combination Figures 6-8 As shown, the seat includes a seat body 101 and a base 102. The seat body 101 is the part that the occupant directly contacts, including a seat cushion, a backrest, and a headrest. The seat body 101 is hinged to the base 102 at a preset point 107 via a swing frame 103 extending along a first direction 104.

[0070] The above connection method allows the seat body 101 to no longer be rigidly fixed to the base, but to have a degree of freedom to rotate around the preset point 107. By controlling the coordinated action of the first adjustment component 201 and the second adjustment component 202 in the swing mechanism, the two ends (i.e. the left and right sides) of the seat body 101 along the first direction 104 can rotate and swing precisely and controllably around the preset point 107 under the drive of the swing frame 103.

[0071] When the vehicle detects that it is about to enter a sharp turn, the control system can drive the swing mechanism to tilt towards the inside of the curve at a specific angle in real time based on sensor signals such as vehicle speed and lateral acceleration. This uses the component of gravity to counteract part of the centrifugal force, providing active lateral support for the occupants and significantly improving the "swinging sensation".

[0072] Specifically, combined Figure 3 and Figure 6 As shown, the vehicle is in a stable state at this time, with the seat body parallel to the vehicle floor. At this time, the first adjustment component and the second adjustment component are in their initial state, that is, inactive. The initial state is: the swing frame 103 is parallel to the base (vehicle floor).

[0073] Combination Figure 4 and Figure 7 As shown, taking the view of the seat as an example, when the vehicle is turning right, the person's body will tend to be higher on the left and lower on the right. In order to prevent the person from swaying as described above (higher on the left and lower on the right), the adjustment component adjusts the right side of the swing bracket 103 to rise and the left side to lower, thereby adjusting the body to a normal upright state.

[0074] Combination Figure 5 and Figure 8 As shown, taking the view of the seat as an example, when the vehicle is turning left, the person's body will tend to be higher on the right and lower on the left. In order to prevent the person from swaying as described above (higher on the right and lower on the left), the adjustment component adjusts the swing bracket 103 to raise the left side and lower the right side, thereby adjusting the body to a normal upright state.

[0075] In summary, the swing angle of this application is controlled by the pure linear motion of the slider (which is controlled by a lead screw). The angle of the lead screw will not change during the motion, resulting in a high strength limit and easy control. Secondly, compared with the prior art, this application eliminates a connecting rod and drives the swing frame only by a lead screw and a slider, resulting in a high upper limit of structural strength, which can meet the strength requirements of the seat frame; Furthermore, this application has lower space requirements compared to existing multi-link structures and is easier to match with different frame designs.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A swing mechanism suitable for a seat with a base, characterized in that, The swing mechanism includes: A swing frame, hinged to the base at a preset point, allows the swing frame to rotate and swing around the preset point; and The adjustment assembly has a first adjustment member and a second adjustment member arranged at intervals along a first direction, wherein one of the first adjustment member and the second adjustment member is connected to one end of the swing frame along the first direction, and the other is connected to the other end of the swing frame along the first direction. The first adjusting component can drive one end of the swing frame along the first direction to rotate clockwise or counterclockwise around the preset point. At the same time, the second adjusting component can drive the other end of the swing frame along the first direction to rotate clockwise or counterclockwise around the preset point, so that the swing frame can rotate and swing around the preset point.

2. The swing mechanism according to claim 1, characterized in that, Both the first adjusting member and the second adjusting member include: The drive unit is fixed to the base; A transmission unit, connected to the output end of the drive unit, wherein the drive unit is capable of driving the transmission unit to move along a first direction; and The linkage part has one end hinged to the transmission part and the other end fixedly connected to the swing frame; When the driving part of the first adjusting member drives the transmission part to move in a direction away from or towards the second adjusting member, the linkage part rotates clockwise or counterclockwise, causing the side of the swing frame connected to the first adjusting member to rotate and swing around the preset point in a clockwise or counterclockwise direction. At the same time, when the driving part of the second adjusting member drives the transmission part to move in a direction towards or away from the first adjusting member, the linkage part rotates clockwise or counterclockwise, causing the side of the swing frame connected to the second adjusting member to rotate and swing around the preset point in a clockwise or counterclockwise direction.

3. The swing mechanism according to claim 2, characterized in that, The transmission unit includes: A lead screw extends along the first direction and is connected to the output end of the drive unit, the drive unit being capable of driving the lead screw to rotate; and A slider is sleeved on the lead screw, and when the lead screw rotates counterclockwise or clockwise, the slider can move along the lead screw in a first direction.

4. The swing mechanism according to claim 3, characterized in that, The linkage unit includes: A first connecting rod is connected to the slider via a pin, and the first connecting rod is rotatable about the pin; and The second link extends along the second direction and is fixedly connected to the swing frame and the first link, respectively. When the slider moves along the first direction, the first connecting rod rotates around the pin, and through the second connecting rod, it can drive the swing frame to rotate and swing around the preset point.

5. The swing mechanism according to claim 2, characterized in that, With the center of the base as the center of rotation, the first adjusting component and the second adjusting component are 180° centrally symmetrical.

6. The swing mechanism according to claim 5, characterized in that, The preset point is located on a straight line passing through the center of the base.

7. The swing mechanism according to claim 4, characterized in that, The swing mechanism also includes a first reinforcing plate; One end of the first reinforcing plate is fixed to the base, and the other end extends from the base toward the pin shaft corresponding to the position of the pin shaft; The first reinforcing plate has a first oval hole that allows the pin to pass through and extends in a first direction.

8. The swing mechanism according to claim 4, characterized in that, The swing mechanism further includes a second reinforcing plate; the second reinforcing plate includes: The motherboard, fixed to the base, and extending along the second direction; and Connecting ear plates are respectively disposed at both ends of the main board along the second direction, so as to form a U-shaped structure with the main board; the connecting ear plates are provided with a second oval hole for the second connecting rod to pass through and extending along the third direction; the side wall of the second oval hole away from the preset point is an arc-shaped side wall.

9. The swing mechanism according to claim 3, characterized in that, The swing mechanism also includes a guide member, which comprises: A fixing plate is sleeved on the lead screw and fixed to the base; and A guide rod extends along the first direction, with one end fixed to the fixing plate and the other end passing through the slider.

10. A seat with a swing function, characterized in that, Includes a seat body, a base, and a swing mechanism as described in any one of claims 1 to 9; The seat body is hinged to the base at the preset point via the swing frame, so that the two ends of the seat body along the first direction can rotate and swing relative to the base around the preset point via the swing frame.

Images