Damping structure with speed change function and turnover seat
By introducing a rotation damper and a transmission structure into the flip seat, the speed control of the flip seat at different stages is realized, which solves the problems of slow flip speed and strong resistance, and improves the comfort and efficiency of the flip seat.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANJI JIEXIN MAGNETIC IND CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-19
AI Technical Summary
Existing flip seats, when transitioning from a folded to an unfolded state, suffer from reduced opening speed and strong resistance when applying force due to the continuous operation of the damper, thus reducing comfort.
Employing a rotation damper and a speed-changing structure, the sliding of the movable block within the movable slot forms an arc-shaped path, enabling rapid initial transitions and slow later transitions. Combined with the automatic folding function of the torsion spring, it provides different unfolding speed stages.
The time it takes for the flip seat to unfold from folding is shortened, the resistance during initial force application is reduced, and the comfort of use is improved.
Smart Images
Figure CN224256657U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flip-up seat technology, specifically relating to a damping structure with speed change function and a flip-up seat. Background Technology
[0002] Flip-up seats are a common feature in urban rail transit, subways, high-speed trains, automobiles, ships, and household appliances. When not in use, flip-up seats automatically fold down, saving space during peak hours. They are also simple to operate and easy to maintain.
[0003] The function of flip seats is often achieved through structures such as pivots and torsion springs, but there are still problems such as excessive wear and tear and loud noise caused by excessive flipping speed.
[0004] The document with authorization announcement number CN208692610U discloses an automatic flip-up seat, including a flip-up frame, a rearwardly extending fixed rod fixed to the rear end of the flip-up frame, and fixed shafts on both sides of the rear end of the flip-up frame respectively for rotatably supporting its up-and-down flipping. A support is fixed to the outer end of the fixed shaft, and a square body extending inward along the axis is located at the inner end of the fixed shaft. A chuck is provided at the junction of the square body and the fixed shaft, and the chuck is fitted onto the square body. The chuck has several adjustment holes. A torsion spring is provided between the fixed shaft rotatably supporting the flip-up frame and the chuck, and is fitted onto the fixed shaft. One end of the torsion spring is engaged with the flip-up frame, and the other end of the torsion spring is inserted into an adjustment hole on the chuck. A rotary damper is provided at the inner end of the square body on one of the two fixed shafts to dampen the up-and-down flipping of the flip-up frame.
[0005] This device primarily reduces the seat's tumbling speed through the damping effect provided by the added damper. However, this device presents a new problem: when transitioning from a folded to an unfolded state, the damper remains active, resulting in stronger resistance and a significantly reduced opening speed, thus decreasing comfort. Utility Model Content
[0006] To address the aforementioned problems, the purpose of this utility model is to provide a damping structure with variable speed function, which, when applied to a flip seat, allows the flip seat to have different unfolding speeds in the early and later stages of the transition from folding to unfolding. The early transition speed is fast, while the later transition speed is slow. Compared to a slow unfolding mode throughout the entire process, this not only shortens the time from folding to full unfolding but also reduces the resistance during the initial application of force, thus improving the comfort of use.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows:
[0008] A damping structure with variable speed function includes a rotational damper and a variable speed structure; the rotational damper includes at least a housing, a rotor, and a medium filled between the housing and the rotor; the variable speed structure includes:
[0009] A fixing unit is concentrically arranged with the rotor and fixedly connected to the rotor; a movable groove is provided on the surface of the fixing unit.
[0010] A speed-changing unit is concentrically arranged with the rotor and rotatably connected to the fixed unit; the speed-changing unit is provided with a movable block that is slidably connected in the movable slot.
[0011] The movable block slides within the movable groove with the center of the fixed unit as its center, forming an arc-shaped path; the two inner sidewalls of the movable groove have a front stop point and a rear stop point that abut against the movable block, and the front stop point and the rear stop point are located at the front end and the rear end of the arc-shaped path, respectively.
[0012] As a further preferred embodiment of this invention, the number of movable blocks is at least two, and the number of movable slots matches the number of movable blocks; and while one movable block abuts against the front stop point on the corresponding movable slot, the remaining movable blocks also abut against the rear stop point on the corresponding movable slot.
[0013] As a further preferred embodiment of the present invention, the fixing unit includes a fixing ring fixedly connected to the rotor, and the movable groove is an arc-shaped groove that passes through the fixing ring; the speed changing unit includes a center block rotatably connected to the center of the fixing ring, one end of the movable block is connected to the center block, and the other end is slidably connected in the movable groove.
[0014] This utility model also provides a flip seat, including the above-mentioned damping structure, and further including a fixed shaft and a flip frame rotatably connected to the fixed shaft;
[0015] The rotation damper is disposed at the connection between the fixed shaft and the tilting frame, and the rotation damper and the center of the speed change structure are respectively provided with two through holes for the fixed shaft to pass through.
[0016] The flip frame is fixedly connected to the outer shell, and the fixed shaft is fixedly connected to the transmission unit.
[0017] As a further preferred embodiment of this utility model, the flipping frame and the fixed shaft have two rotation points; the rotation damper is disposed at one rotation point, and a torsion spring is disposed at the other rotation point; the main body of the torsion spring is sleeved on the fixed shaft, and one end is connected to the fixed shaft, and the other end is connected to the flipping frame.
[0018] As a further preferred embodiment of this utility model, it also includes two fixed supports, with the two ends of the fixed shaft respectively fixedly connected to the two fixed supports, and the flipping frame located between the two fixed supports.
[0019] As a further preferred embodiment of the present invention, the flipping frame includes a frame formed by four side plates and a supporting top plate disposed at the upper end of the frame, and the two rotation points are symmetrically disposed on the two side plates near the fixed bracket.
[0020] As a further preferred embodiment of this utility model, a stop plate is provided on the side plate near the fixed bracket; a limiting plate is provided on the surface of the fixed bracket near the side plate, and the limiting plate abuts against the stop plate when the frame is parallel to the horizontal plane.
[0021] As a further preferred embodiment of this utility model, a seat cushion is provided on the frame.
[0022] As a further preferred embodiment of this utility model, a handrail is also provided at the upper end of the fixed bracket. Attached Figure Description
[0023] Appendix Figure 1 This is a three-dimensional structural diagram of the flip-up seat of this utility model.
[0024] Appendix Figure 2 Appendix to this utility model Figure 1 A partial structural diagram.
[0025] Appendix Figure 3 This is a schematic diagram of the speed-changing structure of this utility model.
[0026] Appendix Figure 4 This is a schematic diagram of the operation of the speed-changing structure of this utility model. Figure 1 .
[0027] Appendix Figure 5 This is a schematic diagram of the operation of the speed-changing structure of this utility model. Figure 2 .
[0028] Figure descriptions: 1. Rotation damper; 2. Gearbox structure; 3. Fixed shaft; 4. Tilting frame; 5. Torsion spring; 6. Fixed bracket; 7. Handrail.
[0029] Casing 11;
[0030] Fixed unit 21, movable groove 211, front stop point 2111, rear stop point 2112, fixed ring 212;
[0031] Transmission unit 22, movable block 221, center block 222;
[0032] Side plate 41, top support plate 42, and abutment plate 43;
[0033] Limit plate 61. Detailed Implementation
[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0035] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] Example 1
[0038] This embodiment provides a damping structure with a variable speed function, which is mainly used in tilting seats. The damping structure includes a rotational damper 1 and a variable speed structure 2.
[0039] The rotational damper 1 is a commercially available rotational damper, mainly comprising a housing 11, a rotor, and a medium filled between the housing 11 and the rotor. A through hole should be provided in the middle of the rotor for external connection. The medium can be silicone oil, grease, etc. In the prior art, the housing 11 is often connected to an external structure one, and the rotor is connected to an external structure two, with external structures one and two rotating relative to each other. When external structures one and two rotate relative to each other, they cause the housing 11 and the rotor to rotate relative to each other. At this time, the medium generates a damping force on the moving parts, thereby playing a buffering role.
[0040] In this embodiment, the speed-changing structure 2 includes:
[0041] A fixing unit 21 is concentrically arranged with the rotor and fixedly connected to the rotor; a movable groove 211 is provided on the surface of the fixing unit.
[0042] The speed change unit 22 is concentrically arranged with the rotor and rotatably connected to the fixed unit 21; the speed change unit 22 is provided with a movable block 221 that is slidably connected in the movable groove 211;
[0043] The movable block 221 slides within the movable groove 211 with the center of the fixed unit 21 as the center, forming an arc-shaped path; the two inner sidewalls of the movable groove 211 have a front stop point 2111 and a rear stop point 2112 that abut against the movable block 221, and the front stop point 2111 and the rear stop point 2112 are located at the front end and the rear end of the arc-shaped path, respectively.
[0044] More preferably, the number of movable blocks 221 is at least two, and the number of movable slots 211 matches the number of movable blocks 221; and while one of the movable blocks 221 abuts against the front stop point 2111 on the corresponding movable slot 211, the remaining movable blocks 221 also abut against the rear stop point 2112 on the corresponding movable slot 211.
[0045] Specifically, the fixing unit 21 includes a fixing ring 212 fixedly connected to the rotor, and the movable groove 211 is an arc-shaped groove that passes through the fixing ring 212; the speed changing unit 22 includes a center block 222 rotatably connected to the center of the fixing ring 212, and one end of the movable block 221 is connected to the center block 222, while the other end is slidably connected within the movable groove 211. There are two movable blocks 221, symmetrically arranged on both sides of the center block 222, and the movable blocks 221 and the center block 222 are integrally formed to ensure structural strength.
[0046] The basic working principle of the damping structure provided in this embodiment is as follows:
[0047] The outer shell 11 is connected to the first external structure, and the transmission unit 22 is connected to the second external structure. The first external structure and the second external structure are rotatably connected relative to each other. The second external structure is connected to the transmission unit 22 by connecting it to the center block 222 with common fasteners such as bolts. When the second external structure rotates relative to the first external structure, the second external structure drives the center block 222 to rotate. The center block 222 drives the movable block 221 to rotate in the movable groove 211. Since the size of the movable block 221 is smaller than the length of the movable groove 221, the movable block 221 will move a certain distance before it can abut against the inner wall of the movable groove 211, thus forming the aforementioned front stop point 2111. Since the movable block 221 can no longer move in the original direction in the movable groove 211, the movable block 221 will push the fixed unit 21 to rotate. At this time, the fixed unit 21 drives the rotor to rotate. At this time, the medium plays a role and exerts a buffering effect.
[0048] Therefore, the damping structure provided in this embodiment has two modes. The first mode is that when the movable block 221 abuts against the front stop point 2111 or the rear stop point 2112, the rotor rotates relative to the outer casing 11 without delay, at which point the damping structure provides a buffering effect. The second mode is that before the movable block 221 abuts against the front stop point 2111 or the rear stop point 2112, the movable block 221 rotates within the movable groove 211, which is idle rotation, and the rotor does not rotate relative to the outer casing 11. The two modes can be freely switched, giving the device using this damping structure the characteristic of "fast rotation speed in the early stage and slow rotation speed in the later stage," ensuring a buffering effect between the first and second rotating structures while shortening the time required to rotate to the expected position.
[0049] Example 2
[0050] This embodiment is an application of the damping structure provided in Embodiment 1, namely a flip-up seat with the aforementioned damping structure. The seat further includes a fixed shaft 3, a flip-up frame 4 rotatably connected to the fixed shaft 3, and two fixed supports 6. Both ends of the fixed shaft 3 are fixedly connected to the two fixed supports 6 respectively. The flip-up frame 4 is located between the two fixed supports 6, and an armrest 7 is provided at the upper end of the fixed supports 6. The fixed supports 6 are vertically set on the ground, that is, perpendicular to the horizontal plane, and the flip-up frame 4 remains almost parallel to the horizontal plane during use.
[0051] The rotation damper 1 is disposed at the connection between the fixed shaft 3 and the flip frame 4, and the rotation damper 1 and the transmission structure 2 are respectively provided with two through holes for the fixed shaft 3 to pass through; and the flip frame 4 is fixedly connected to the outer shell 11, and the fixed shaft 3 is fixedly connected to the transmission unit 22.
[0052] In this embodiment, the flip frame 4 and the fixed shaft 3 have two rotation points; the rotation damper 1 is disposed at one rotation point, and a torsion spring 5 is disposed at the other rotation point; the main body of the torsion spring 5 is sleeved on the fixed shaft 3, with one end connected to the fixed shaft 3 and the other end connected to the flip frame 4. The main function of the torsion spring 5 is to ensure that the flip frame 4 always tends to be perpendicular to the horizontal plane, thereby enabling the flip seat to have an automatic folding function.
[0053] Specifically, the flip frame 4 includes a frame formed by four side plates 41 and a supporting top plate 42 disposed at the upper end of the frame. The two rotation points are symmetrically arranged on the two side plates 41 near the fixed bracket 6. A cushion is also provided on the frame to improve seating comfort.
[0054] In this embodiment, a stop plate 43 is provided on the side plate 41 near the fixed bracket 6; a limiting plate 61 is provided on the surface of the fixed bracket 6 near the side plate 41, and the limiting plate 61 abuts against the stop plate 43 when the frame is parallel to the horizontal plane. This arrangement serves to provide support strength for the frame when it is under force and remains parallel to the horizontal plane, and also avoids the problem of poor seating comfort caused by excessive rotation angle of the frame.
[0055] The basic working principle of the flip-up seat provided in this embodiment is as follows: Under no external force, the torsion spring 5 acts on the frame, causing the frame to rotate relative to the fixed axis 3 and maintain a folded state that is almost perpendicular to the horizontal plane. When the seat is needed, an external force is applied to the frame. In the early stage, the movable block 221 does not abut against the front stop point 2111 or the rear stop point 2112, and the damping structure does not play a buffering role. The flipping frame only needs to overcome the force of the torsion spring. When the frame rotates to a certain angle, the damping plays a buffering role. At this time, since the angle between the frame and the horizontal plane is small, one can sit directly on the frame without having to continue to overcome the gradually increasing force of the torsion spring 5. When the use ends, the angle between the frame and the horizontal plane gradually increases under the action of the torsion spring 5. Due to the reverse rotation, the damping structure still does not play a buffering role in the early stage of the reverse rotation. The frame can flip quickly until the movable block 221 abuts against the front stop point 2111 or the rear stop point 2112. The damping structure plays a buffering role, which slows down the frame speed in the later stage of the flipping and avoids excessive impact and noise.
[0056] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A damping structure with a speed-changing function, comprising a rotational damper (1) and a speed-changing structure (2); the rotational damper (1) comprises at least a housing (11), a rotor, and a medium filled between the housing (11) and the rotor; characterized in that: The speed-changing structure (2) includes: A fixing unit (21) is arranged concentrically with the rotor and fixedly connected to the rotor; a movable groove (211) is provided on the surface of the fixing unit. The speed change unit (22) is concentrically arranged with the rotor and rotatably connected to the fixed unit (21); the speed change unit (22) is provided with a movable block (221) slidably connected in the movable groove (211); The movable block (221) slides within the movable groove (211) with the center of the fixed unit (21) as the center and forms an arc-shaped path; the two inner sidewalls of the movable groove (211) have a front stop point (2111) and a rear stop point (2112) that abut against the movable block (221), and the front stop point (2111) and the rear stop point (2112) are located at the front end and the rear end of the arc-shaped path, respectively.
2. The damping structure with variable speed function according to claim 1, characterized in that: The number of the movable blocks (221) is at least two, and the number of the movable slots (211) matches the number of the movable blocks (221); while one of the movable blocks (221) abuts against the front stop point (2111) on the corresponding movable slot (211), the remaining movable blocks (221) abut against the rear stop point (2112) on the corresponding movable slot (211).
3. The damping structure with variable speed function according to claim 1, characterized in that: The fixed unit (21) includes a fixed ring (212) fixedly connected to the rotor, and the movable groove (211) is an arc-shaped groove that passes through the fixed ring (212); the speed change unit (22) includes a center block (222) rotatably connected to the center of the fixed ring (212), one end of the movable block (221) is connected to the center block (222), and the other end is slidably connected in the movable groove (211).
4. A flip-up seat, comprising a damping structure with a variable speed function as described in claim 1, characterized in that: It also includes a fixed shaft (3) and a flip frame (4) rotatably connected to the fixed shaft (3); The rotation damper (1) is located at the connection between the fixed shaft (3) and the flip frame (4), and the rotation damper (1) and the speed change structure (2) are respectively provided with two through holes for the fixed shaft (3) to pass through. The flip frame (4) is fixedly connected to the outer shell (11), and the fixed shaft (3) is fixedly connected to the speed change unit (22).
5. A flip-up seat according to claim 4, characterized in that: The flip frame (4) and the fixed shaft (3) have two rotation points; the rotation damper (1) is set at one rotation point and a torsion spring (5) is set at the other rotation point; the main body of the torsion spring (5) is sleeved on the fixed shaft (3), and one end is connected to the fixed shaft (3) and the other end is connected to the flip frame (4).
6. A flip-up seat according to claim 5, characterized in that: It also includes two fixed supports (6), with the two ends of the fixed shaft (3) fixedly connected to the two fixed supports (6) respectively, and the flipping frame (4) located between the two fixed supports (6).
7. A flip-up seat according to claim 6, characterized in that: The flip frame (4) includes a frame formed by four side plates (41) and a support top plate (42) set at the upper end of the frame. The two rotation points are symmetrically arranged on the two side plates (41) near the fixed bracket (6).
8. A flip-up seat according to claim 7, characterized in that: A stop plate (43) is provided on the side plate (41) near the fixed bracket (6); a limit plate (61) is provided on the surface of the fixed bracket (6) near the side plate (41), and the limit plate (61) abuts against the stop plate (43) when the frame is parallel to the horizontal plane.
9. A flip-up seat according to claim 7, characterized in that: A seat cushion is provided on the frame.
10. A flip-up seat according to claim 6, characterized in that: The upper end of the fixed bracket (6) is also provided with a handrail (7).