Damper and damping system comprising same

Abstract

The utility model discloses a damper and a damping system comprising the same. The damper comprises a base, a swing part and a damping pipe. The swinging piece is rotatably arranged on the base through a rotating shaft, and the swinging piece rotates around the rotating shaft when being triggered; the damping tube is arranged on the base; the first end of the first rod piece is hinged to the swing piece, and the second end of the first rod piece is hinged to the damping pipe. The first end of the first rod piece is driven by the swing piece to rotate around the rotating shaft, and the second end of the first rod piece rotates relative to the damping pipe and drives the damping pipe to stretch out and draw back. Thus, the closing speed of the door leaf can be reduced, sudden impact caused by inertia is eliminated, the door closing action is softer and more stable, and the user experience is remarkably improved; moreover, the swing piece and the first rod piece are combined into a simple mechanical structure, the number of parts is reduced, the manufacturing cost is reduced, the overall efficiency and reliability of the damper are improved, in addition, due to the design, installation and maintenance are convenient, and the later operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of door and window hardware accessories, and in particular to dampers and damping systems including the dampers. Background Technology

[0002] A hinged door system refers to a door system in which the door leaf is connected to the door frame via a specific hinge mechanism and can rotate relative to the door frame. This type of door system specifically includes swing doors, off-hinged doors, and folding doors. However, in current technology, although the design of hinged doors is relatively mature, during the closing process, due to inertia or insufficient installation precision, problems often arise such as excessive force of the door leaf impacting the door frame and unstable door leaf movement trajectory. This not only affects the service life of the door system but may also cause noise pollution to the surrounding environment and even pose safety hazards to users. Utility Model Content

[0003] In order to overcome at least one of the defects described in the prior art, the present invention provides a damper and a damping system including the damper, which aims to achieve a smooth transition of the door leaf during the closing process through ingenious design, effectively reduce impact force, and improve the user experience.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] A damper for a pivot door system includes: a base; a swing member rotatably disposed on the base via a pivot, the swing member rotating about the pivot when triggered; a damping tube disposed on the base; a first rod, a first end of the first rod hinged to the swing member, and a second end of the first rod hinged to the damping tube; under the drive of the swing member, the first end of the first rod rotates about the pivot, and the second end of the first rod rotates relative to the damping tube, causing the damping tube to extend and retract.

[0006] According to some embodiments of the present invention, the base is provided with a guide groove extending along an arc, and the rotating shaft is the arc center of the guide groove; the first end of the first rod is slidably connected to the guide groove, and the first end of the first rod can move along the guide groove.

[0007] According to some embodiments of the present invention, the damping tube includes a hydraulic cylinder and a damping rod. The hydraulic cylinder is disposed on the base, and the damping rod is slidably disposed on the hydraulic cylinder. A connecting groove is provided at one end of the damping rod away from the hydraulic cylinder, and the second end of the first rod is hinged to the connecting groove.

[0008] According to some embodiments of the present invention, the damper further includes a second rod, the first end of which is hinged to the base, and the second end of which is hinged to the swing member; in the extension and retraction direction of the damping tube, the second end of the first rod and the first end of the second rod are distributed on opposite sides of the swing member.

[0009] According to some embodiments of the present invention, the second rod includes a first branch rod and a second branch rod, the first branch rod and the second branch rod are slidably connected, one end of the first branch rod is hinged to the base, and one end of the second branch rod is hinged to the swing member; the first end of the second rod is the end of the first branch rod connected to the base, and the second end of the second rod is the end of the second branch rod connected to the swing member.

[0010] According to some embodiments of the present invention, the damper further includes an elastic element disposed between the first branch rod and the second branch rod, and the elastic element is configured to apply a force toward the damping tube to the second branch rod.

[0011] In addition, this utility model also provides a damping system, including a trigger and a damper as described above. The base and the trigger can move relative to each other during the opening and closing process. The swing member can rotate relative to the base between a first position and a second position. During the closing process and when the swing member is in the first position, the trigger can contact the swing member and drive the swing member to rotate to the second position. During the opening process and when the swing member is in the second position, the trigger can drive the swing member to rotate to the first position. As the base and the trigger move relative to each other, the trigger eventually separates from the swing member.

[0012] According to some embodiments of the present invention, the swing member is provided with a trigger groove. When the swing member is in the first position, the trigger member can be engaged in the trigger groove to drive the swing member.

[0013] According to some embodiments of the present invention, the swing member has a guide ramp; the guide ramp is formed by the top wall of the swing member recessing towards the side wall of the swing member, or the guide ramp is formed by the bottom wall of the swing member recessing towards the side wall of the swing member; when the swing member is in a first position, the trigger member can be engaged into the trigger groove from the opening of the trigger groove; when the swing member is in a second position, the trigger member can move along the guide ramp to be engaged into the trigger groove.

[0014] According to some embodiments of this utility model, the trigger is an elastic structure that can extend and retract vertically.

[0015] In summary, the damper and damping system including the present invention provided by this utility model have at least the following technical effects:

[0016] When the door closes, the swing element is triggered and rotates around the pivot. This rotational motion is converted into linear motion of the moving end of the damping tube by the first rod. The fluid flow within the damping tube then generates progressive resistance. This process not only slows down the closing speed of the door but also eliminates sudden impacts caused by inertia, making the closing action smoother and more stable, significantly improving the user experience. Furthermore, the combination of the swing element and the first rod forms a simple mechanical structure, which not only reduces the number of parts and manufacturing costs but also improves the overall efficiency and reliability of the damper. In addition, this design facilitates installation and maintenance, reducing subsequent operating costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cooperation structure of the damper (oscillating member in the first position) and the trigger member in a first view according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the cooperation structure of the damper (oscillating member in the first position) and the trigger member in a second view according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the cooperation structure of the damper (oscillating member in the second position) and the trigger member in a third-view perspective according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the cooperation structure of the damper (oscillating member in the second position) and the trigger member in a second view according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the cooperation structure of the damper (the swinging member accidentally rotates to the second position) and the trigger member in an embodiment of the present invention from a fourth perspective.

[0022] Figure 6 This is a three-dimensional structural diagram of the trigger element according to an embodiment of the present utility model;

[0023] Figure 7 This is a cross-sectional structural diagram of the trigger element according to an embodiment of the present invention.

[0024] The meanings of the reference numerals in the attached figures are as follows:

[0025] 1. Base; 11. Guide groove; 2. Swing component; 21. Rotating shaft; 22. Trigger groove; 23. Guide ramp; 3. Damping tube; 31. Hydraulic cylinder; 32. Damping rod; 321. Connecting groove; 4. First rod; 5. Second rod; 51. First branch rod; 52. Second branch rod; 6. Elastic component; 7. Trigger component; 71. Housing; 72. Trigger rod; 73. Second spring. Detailed Implementation

[0026] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0027] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Please see Figures 1 to 4 This embodiment discloses a damper for a pivot door system, including a base 1, a swing member 2, and a damping tube 3; the swing member 2 is rotatably mounted on the base 1 via a pivot shaft 21, and the swing member 2 rotates around the pivot shaft 21 when triggered; the damping tube 3 is mounted on the base 1; the first end of the first rod 4 is hinged to the swing member 2, and the second end of the first rod 4 is hinged to the damping tube 3; under the drive of the swing member 2, the first end of the first rod 4 rotates around the pivot shaft 21, and the second end of the first rod 4 rotates relative to the damping tube 3 and drives the damping tube 3 to extend and retract.

[0031] Specifically, a pivot door system can be, but is not limited to, a swing door, an off-pivot door, or a folding door.

[0032] Specifically, the base 1 serves as the mounting foundation for the damper, fixed at an appropriate position on the door frame or door leaf to support the entire damper structure; the swing member 2 is rotatably mounted on the base 1 via the pivot 21. When the door leaf is closed to a certain position, the swing member 2 is triggered to rotate around the pivot 21. When the swing member 2 rotates, the first rod 4 acts as a transmission mechanism, driving the movable end of the damping tube 3 to move relative to the fixed end, thereby compressing or releasing the damping medium and producing a damping effect.

[0033] The damper provided in this embodiment for a pivot door system triggers the swing member 2 to rotate around the pivot 21 when the door is closed. This rotational motion is converted into linear motion of the moving end of the damping tube 3 by the first rod 4, which in turn generates progressive resistance through the flow of the medium in the damping tube 3. This process not only slows down the closing speed of the door but also eliminates sudden impacts caused by inertia, making the closing action smoother and more stable, significantly improving the user experience. Furthermore, the combination of the swing member 2 and the first rod 4 forms a simple mechanical structure, which not only reduces the number of parts and manufacturing costs but also improves the overall efficiency and reliability of the damper. In addition, this design facilitates installation and maintenance, reducing subsequent operating costs.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, preferably, in this embodiment, the base 1 is provided with a guide groove 11 extending along an arc, and the rotating shaft 21 is the arc center of the guide groove 11; the first end of the first rod 4 is slidably connected to the guide groove 11, and the first end of the first rod 4 can move along the guide groove 11. This can bring the following beneficial effects:

[0035] First, the arc design of the guide groove 11 allows the first end of the first rod 4 to move smoothly and accurately on a predetermined path. This design ensures that the first rod 4 can move along a predetermined trajectory and speed when responding to external triggers (such as the closing action of the door), thereby effectively converting this movement into a corresponding action in the damping tube 3 and achieving precise damping control.

[0036] Secondly, the guide groove 11 not only provides stable support and guidance for the first rod 4, but also restricts its movement in unexpected directions. This design reduces friction and wear between moving parts, extending the service life of the damper. At the same time, the stable guidance ensures that the damper maintains consistent damping performance under various operating conditions. Thirdly, the sliding connection between the guide groove 11 and the first rod 4 simplifies the installation process of the damper. Meanwhile, since the relative movement between moving parts is precisely controlled, the risk of performance degradation due to improper installation or long-term use is reduced. In addition, this design facilitates later maintenance and inspection, reducing maintenance costs.

[0037] Finally, precise damping control and stable motion performance together improve the smoothness and quietness of the door closing, allowing users to experience a smoother and gentler closing action, thereby enhancing the overall user experience and satisfaction.

[0038] like Figure 2 and Figure 4 As shown, preferably, in this embodiment, the damping tube 3 includes a hydraulic cylinder 31 and a damping rod 32. The hydraulic cylinder 31 is fixedly mounted on the base 1, and the damping rod 32 is slidably mounted on the hydraulic cylinder 31. A connecting groove 321 is provided at the end of the damping rod 32 away from the hydraulic cylinder 31, and the second end of the first rod 4 is hinged to the connecting groove 321. Thus, the rotational connection between the second end of the first rod 4 and the connecting groove 321 of the damping rod 32 ensures that the door closing action can be accurately transmitted to the damping tube 3, and then converted into the sliding of the damping rod 32 within the hydraulic cylinder 31. This design reduces energy loss and error accumulation during motion transmission, and improves the overall response speed and accuracy of the damper.

[0039] It should be noted that in some other embodiments, the damping tube 3 can also be arranged in the opposite direction. That is, the damping rod 32 is fixedly arranged on the base 1, the hydraulic cylinder 31 is slidably connected to the damping rod 32, and the second end of the first rod 4 is hinged to the end of the hydraulic cylinder 31 away from the damping rod 32. The choice can be made according to actual needs.

[0040] like Figure 2 and Figure 4 As shown, further in this embodiment, the damper also includes a second rod 5, the first end of which is hinged to the base 1, and the second end of which is hinged to the swing member 2. In the extension and retraction direction of the damping tube 3, the second end of the first rod 4 and the first end of the second rod 5 are distributed on opposite sides of the swing member 2. Thus, by setting the first rod 4 and the second rod 5 on opposite sides of the swing member 2 respectively, a more stable mechanical balance system can be constructed, thereby making the movement of the swing member 2 more stable and balanced. When the door closes and triggers the swing member 2, the swing member 2 will be simultaneously subjected to forces from the first rod 4 and the second rod 5. Since these two rods are distributed on opposite sides of the swing member 2 in the extension and retraction direction of the damping tube 3, they can work together to transmit the force to the damping tube 3 in a more uniform and stable manner, thereby producing a smoother and more controllable damping force output. This design not only improves the stability of the damper when subjected to the closing force of the door, but also reduces the risk of wear and failure caused by uneven force.

[0041] like Figure 2 and Figure 4As shown, preferably, in this embodiment, the second rod 5 includes a first branch rod 51 and a second branch rod 52, which are slidably connected. One end of the first branch rod 51 is hinged to the base 1, and one end of the second branch rod 52 is hinged to the swing member 2. The first end of the second rod 5 is the end connected to the base 1 of the first branch rod 51, and the second end of the second rod 5 is the end connected to the swing member 2 of the second branch rod 52. Thus, the relative sliding between the first branch rod 51 and the second branch rod 52 allows the second rod 5 to flexibly adapt to the positional changes caused by the rotation of the swing member 2. This design ensures that regardless of how the door moves, the second rod 5 maintains coordinated movement with the swing member 2, thereby avoiding any possible interference and ensuring the smooth operation of the damper.

[0042] Specifically, in this embodiment, the first branch rod 51 and the second branch rod 52 are slidably sleeved together.

[0043] like Figure 2 and Figure 4 As shown, preferably, in this embodiment, the damper further includes an elastic element 6, which is disposed between the first branch rod 51 and the second branch rod 52. The elastic element 6 is configured to apply a force toward the damping tube 3 to the second branch rod 52, so that the swing member 2 rotates fully and thus fully compresses the damping tube 3. In this way, the introduction of the elastic element 6 enables the second branch rod 52 to generate a thrust toward the damping tube 3 when subjected to external force. This thrust not only enhances the rotational capability of the swing member 2, but also ensures that the swing member 2 can be fully compressed during rotation. The damping tube 3 produces a more stable and controllable damping effect. This design not only improves the performance of the damper, but also makes the door leaf move more smoothly and gently during closing. Furthermore, the presence of the elastic element 6 creates a dynamic mechanical balance system between the first branch rod 51 and the second branch rod 52. When the swinging member 2 rotates, it compresses or stretches the elastic element 6 through the second branch rod 52, while the elastic element 6 adjusts the second branch rod 52 through its reaction force to maintain the stability of the entire system.

[0044] Preferably, in this embodiment, the elastic element 6 is a first spring; it should be noted that in some other embodiments, the elastic element 6 may also be, but is not limited to, elastic silicone or elastic rubber.

[0045] like Figure 1 and Figure 3As shown, this embodiment also provides a damping system, including a trigger 7 and a damper as described above. This damping system has all the advantages of the aforementioned damper, which will not be repeated here. Specifically, the base 1 and the trigger 7 can move relative to each other during the opening and closing process, and the swing member 2 can rotate relative to the base 1 between a first position and a second position. During the closing process and when the swing member 2 is in the first position, the trigger 7 can contact the swing member 2 and drive the swing member 2 to rotate to the second position. This design ensures that when the door begins to close, the trigger 7 can respond quickly and activate the damper, thereby producing the desired damping effect. During the opening process and when the swing member 2 is in the second position, the trigger 7 can drive the swing member 2 to rotate to the first position. As the base and the trigger move relative to each other, the trigger 7 eventually separates from the swing member 2. This reverse movement not only prepares for the next closing of the door but also ensures that the damper can remain in a silent state when not needed.

[0046] like Figure 2 and Figure 4 As shown, preferably, in this embodiment, the second branch rod 52 is V-shaped. This shape not only enhances the strength and stability of the second branch rod 52, but also enables it to generate a stable supporting force on the swing member 2 under the action of the elastic member 6. Specifically, when the swing member 2 is in the first position and is not triggered, the V-shaped second branch rod 52 can ensure that the swing member 2 remains in that position without wobbling due to the force of the elastic member 6. This design not only improves the static stability of the damper, but also reduces the noise and wear caused by wobbling. Furthermore, since the second branch rod 52 adopts a V-shaped design and is combined with the elastic member 6, when the swing member 2 rotates under the action of the trigger member 7, it can more smoothly transmit the force to the damping tube 3. In this process, the V-shaped structure makes the force distribution more uniform, thereby improving the mechanical transmission efficiency and damping effect of the damper.

[0047] like Figure 1 and Figure 3 As shown, preferably, in this embodiment, the swing member 2 is provided with a trigger groove 22. When the swing member 2 is in the first position, the trigger member 7 can be engaged in the trigger groove 22 to drive the swing member 2. Thus, the design of the trigger groove 22 enables the trigger member 7 to be accurately positioned and engaged in the swing member 2. This design ensures that when the door begins to close, the trigger member 7 can quickly and accurately activate the damper, avoiding problems such as poor damping effect or door shaking caused by untimely or incomplete triggering.

[0048] like Figure 5As shown, preferably, in this embodiment, the swing member 2 has a guide ramp 23, which is formed by the top wall of the swing member 2 recessed towards the side wall of the swing member 2. At this time, the damper is disposed on the upper side of the door leaf. Specifically, when the swing member 2 is in the first position, the trigger member 7 can be inserted into the trigger groove 22 from the opening of the trigger groove 22. When the swing member 2 is in the second position, the trigger member 7 can move along the guide ramp 23 to be inserted into the trigger groove 22. In this way, when the door leaf is in the open state, if the swing member 2 rotates from the first position to the second position due to an accident (such as external force impact or system failure), the design of the guide ramp 23 can avoid the problem of collision interference between the trigger member 7 and the swing member 2 during the closing process of the door leaf. Furthermore, since the trigger member 7 can be inserted into the trigger groove 22 along the guide ramp 23 at this time, when the door leaf is closed and reopened, the trigger member 7 can drive the swing member 2 to reset from the second position to the first position.

[0049] It should be noted that in some other embodiments, the guide ramp 23 is formed by the bottom wall of the swing member 2 recessed towards the side wall of the swing member 2. In this case, the damper is set on the lower side of the door leaf. It can be selected according to actual needs and is not limited here.

[0050] like Figure 6 and Figure 7 As shown, preferably, in this embodiment, the trigger 7 is an elastic structure that can extend and retract vertically. The trigger 7 is designed to be able to move freely in the vertical direction to adapt to the height changes of the guide ramp 23 at different positions, so that the trigger 7 can be inserted into the trigger groove 22 along the guide ramp 23 when needed. Specifically, in this embodiment, the trigger 7 includes a housing 71, a trigger rod 72, and a second spring 73. The trigger rod 72 is slidably disposed within the housing 71, and the spring is sleeved on the trigger rod 72 to apply a downward force to the trigger rod 72.

[0051] In addition, this embodiment also provides a pivot door system, including the damping system described above, and also includes a door leaf and a door frame. The door leaf is rotatably mounted on the door frame. One of the base 1 and the trigger 7 is mounted on the door leaf, and the other is mounted on the door frame. This pivot door system has all the advantages of the damping system described above, which will not be repeated here.

[0052] In summary, the damper and damping system including the present invention disclosed herein can bring at least the following beneficial technical effects:

[0053] 1) It slows down the closing speed of the door and eliminates sudden impacts caused by inertia, making the closing action smoother and more stable, significantly improving the user experience;

[0054] 2) The combination of the swinging component 2 and the first rod 4 forms a simple mechanical structure, which not only reduces the number of parts and manufacturing costs, but also improves the overall efficiency and reliability of the damper. This design also facilitates installation and maintenance, and reduces later operating costs.

[0055] 3) The arc design of the guide groove 11 allows the first end of the first rod 4 to move smoothly and accurately on a predetermined path. This design ensures that the first rod 4 can move according to a predetermined trajectory and speed when responding to an external trigger, thereby effectively converting this movement into a corresponding action in the damping tube 3 and achieving precise damping control.

[0056] 4) When the door closes and triggers the swing member 2, the swing member 2 will be subjected to forces from the first rod 4 and the second rod 5 at the same time. Since these two rods are distributed on opposite sides of the swing member 2 in the extension and retraction direction of the damping tube 3, they can work together to transmit the force to the damping tube 3 in a more uniform and stable manner, thereby producing a smoother and more controllable damping force output.

[0057] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A damper for a pivot door system, characterized in that, include: Base (1); The swing member (2) is rotatably mounted on the base (1) via a pivot (21), and the swing member (2) rotates around the pivot (21) when triggered. A damping tube (3) is disposed on the base (1); The first rod (4) has its first end hinged to the swing member (2) and its second end hinged to the damping tube (3). Under the drive of the swing member (2), the first end of the first rod (4) rotates around the rotating shaft (21), and the second end of the first rod (4) rotates relative to the damping tube (3) and drives the damping tube (3) to extend and retract.

2. The damper according to claim 1, characterized in that, The base (1) is provided with a guide groove (11) extending along an arc, and the rotating shaft (21) is the arc center of the guide groove (11); the first end of the first rod (4) is slidably connected to the guide groove (11), and the first end of the first rod (4) can move along the guide groove (11).

3. The damper according to claim 1, characterized in that, The damping tube (3) includes a hydraulic cylinder (31) and a damping rod (32). The hydraulic cylinder (31) is disposed on the base (1). The damping rod (32) is slidably disposed on the hydraulic cylinder (31). A connecting groove (321) is provided at one end of the damping rod (32) away from the hydraulic cylinder (31). The second end of the first rod (4) is hinged to the connecting groove (321).

4. The damper according to any one of claims 1-3, characterized in that, The damper further includes a second rod (5), the first end of which is hinged to the base (1), and the second end of which is hinged to the swing member (2); in the extension and retraction direction of the damping tube (3), the second end of the first rod (4) and the first end of the second rod (5) are distributed on opposite sides of the swing member (2).

5. The damper according to claim 4, characterized in that, The second rod (5) includes a first branch rod (51) and a second branch rod (52), the first branch rod (51) and the second branch rod (52) are slidably connected, one end of the first branch rod (51) is hinged to the base (1), and one end of the second branch rod (52) is hinged to the swing member (2); the first end of the second rod (5) is the end of the first branch rod (51) connected to the base (1), and the second end of the second rod (5) is the end of the second branch rod (52) connected to the swing member (2).

6. The damper according to claim 5, characterized in that, The damper further includes an elastic element (6) disposed between the first branch rod (51) and the second branch rod (52), the elastic element (6) being configured to apply a force toward the damping tube (3) to the second branch rod (52).

7. A damping system, characterized in that, Includes a trigger (7) and a damper as described in any one of claims 1-6, wherein the base (1) and the trigger (7) are movable relative to each other during the opening and closing process, and the swing member (2) is rotatable relative to the base (1) between a first position and a second position; During the closing process and when the swing member (2) is in the first position, the trigger member (7) can contact the swing member (2) and drive the swing member (2) to rotate to the second position; During the door opening process and when the swing member (2) is in the second position, the trigger member (7) can drive the swing member (2) to rotate to the first position. As the base (1) and the trigger member (7) move relative to each other, the trigger member (7) eventually separates from the swing member (2).

8. The damping system according to claim 7, characterized in that, The swing member (2) is provided with a trigger groove (22). When the swing member (2) is in the first position, the trigger member (7) can be engaged in the trigger groove (22) to drive the swing member (2).

9. The damping system according to claim 8, characterized in that, The swing member (2) has a guide ramp (23); the guide ramp (23) is formed by the top wall of the swing member (2) recessed towards the side wall of the swing member (2), or the guide ramp (23) is formed by the bottom wall of the swing member (2) recessed towards the side wall of the swing member (2); When the swing member (2) is in the first position, the trigger member (7) can be inserted into the trigger groove (22) from the opening of the trigger groove (22); When the swing member (2) is in the second position, the trigger member (7) can move along the guide ramp (23) to engage in the trigger groove (22).

10. The damping system according to claim 9, characterized in that, The trigger element (7) is an elastic structure that can extend and retract vertically.

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