Folding seat with slow descending and damping functions
By installing damping components in the four-link mechanism of the folding seat, the impact force and noise problems during expansion and closing are solved, and the shock absorption effect is slowed down and damped, extending the service life.
Patent Information
- Application Number
- CN202422260363.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing folding seats lack cushioning and shock absorption when unfolded and closed, resulting in high impact force and high noise, shortening service life.
A damping assembly is provided at the hinge of the four-link mechanism, including a torsion spring pin and a torsion spring or a damping pin and a damping spring, providing a damping force to delay rotational speed.
Reduce impact when the folding seat falls, reduce noise when deploying and folding, extend service life, and avoid deflection.
Smart Images
Figure CN223126113U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of furniture, in particular to a folding seat with slow descent and shock absorption. Background Art
[0002] At present, the household or office appliance industry has developed rapidly, and there are various appliances for household or office use; in daily life and some public places, especially in places where temporary waiting and gathering are required, such as: the queuing waiting area in a restaurant, the conference hall; or in some places in a room where sitting is needed or at the entrance of a room, as well as in a bathroom, due to the generally small area, it is often inconvenient to place a special seat, bringing many inconveniences to daily life and public life. To solve this problem, some folding chairs will be installed in these places, which are convenient to be stored when not in use. In order to ensure the stability of the seat when unfolded, a seat with a four-bar linkage structure is usually adopted to ensure that the support legs are perpendicular to the wall to play a supporting role. However, the current folding chairs do not have buffer shock absorption when unfolding and folding, resulting in a large impact when opening and closing, which will reduce the service life and generate some noise. Summary of the Utility Model
[0003] To solve the above problems, the purpose of the utility model is to provide a folding seat with slow descent and shock absorption.
[0004] The utility model is realized by the following method: a folding seat with slow descent and shock absorption, including a four-bar linkage mechanism and a seat board, the seat board is installed on the four-bar linkage mechanism, the four-bar linkage mechanism includes legs, a rear bracket, an upper bracket and a connecting rod, the rear bracket can be fixed to the wall, both ends of the upper bracket are respectively hinged to the legs and the rear bracket, both ends of the connecting rod are respectively hinged to the legs and the rear bracket, and the seat board is installed on the upper bracket; a damping component is arranged in the four-bar linkage mechanism, and the damping component is arranged at least at one of the hinged joints between the upper bracket and the legs, the rear bracket and / or the connecting rod and the legs, the rear bracket to buffer the unfolding and folding.
[0005] Preferably, the damping component includes a torsion spring pin and a torsion spring, the torsion spring pin is arranged through the hinged joint between the upper bracket and the legs, the torsion spring pin is circumferentially limitedly connected with the legs or the upper bracket, the torsion spring is circumferentially limited with the torsion spring pin, and the torsion spring is circumferentially limitedly connected with the upper bracket or the legs.
[0006] Preferably, the damping component includes a torsion spring pin and a torsion spring, the torsion spring pin is arranged through the hinged joint between the connecting rod and the legs, the torsion spring pin is circumferentially limitedly connected with the legs or the connecting rod, the torsion spring is circumferentially limited with the torsion spring pin, and the torsion spring is circumferentially limitedly connected with the connecting rod or the legs.
[0007] Preferably, the damping assembly includes a torsion spring pin and a torsion spring. The torsion spring pin is disposed through the hinge joint between the upper bracket and the rear bracket. The torsion spring pin is circumferentially and limitedly connected to the rear bracket or the upper bracket. The torsion spring is circumferentially limited to the torsion spring pin, and the torsion spring is circumferentially and limitedly connected to the upper bracket or the rear bracket.
[0008] Preferably, the damping assembly includes a torsion spring pin and a torsion spring. The torsion spring pin is disposed through the hinge joint between the connecting rod and the rear bracket. The torsion spring pin is circumferentially and limitedly connected to the rear bracket or the connecting rod. The torsion spring is circumferentially limited to the torsion spring pin, and the torsion spring is circumferentially and limitedly connected to the connecting rod or the rear bracket.
[0009] Preferably, the torsion spring pin has a limiting portion, and the cross section of the limiting portion is elliptical or polygonal or D-shaped. The leg or the rear bracket or the upper bracket or the connecting rod at the hinge joint of the four-bar linkage mechanism for axially and limitedly connecting to the torsion spring pin is provided with a circumferential limiting hole that cooperates with the limiting portion to limit the relative rotation of the torsion spring pin.
[0010] Preferably, a rotation stopping groove is provided on the torsion spring pin. One end of the torsion spring is inserted into the rotation stopping groove, and the other end of the torsion spring is fixedly connected to the leg or the rear bracket or the upper bracket or the connecting rod.
[0011] Preferably, a rotation stopping hole is formed in the leg or the rear bracket or the upper bracket or the connecting rod at the hinge joint where the damping assembly is installed. The other end of the torsion spring passes through the rotation stopping hole; wear-resistant gaskets are provided at the hinge joints of the connecting rod with the rear bracket and the leg, and wear-resistant gaskets are provided at the hinge joints of the upper bracket with the rear bracket and the leg.
[0012] Preferably, there are two sets of left and right four-bar linkage mechanisms, and each set of four-bar linkage mechanisms is provided with at least one damping assembly; the seat plate is fixedly installed on the two upper brackets, and a panel is installed on one side of the two legs away from the rear bracket; the bottoms of the two legs are integrally connected.
[0013] Preferably, the damping assembly includes a damping pin and a damping spring. The damping spring is disposed through the damping pin, and the damping pin is disposed through at least one hinge joint of the four-bar linkage mechanism. A bolt is provided on the damping pin, and the bolt and the damping pin cooperate to clamp the damping spring at the hinge joint.
[0014] The beneficial effects of the present invention are as follows: The present invention provides a folding seat with slow descent and shock absorption. Compared with the prior art, the present invention has at least the following technical effects:
[0015] 1. By providing a damping component at at least one hinge of the four-bar linkage, the damping component provides a damping force to the rotation of the four-bar linkage to delay its rotation speed, thereby achieving the effect of delaying the free fall speed of the folding seat, reducing the impact force during falling, extending the service life of the folding seat, and reducing the noise during unfolding and folding.
[0016] 2. The damping component is configured to include a torsion spring pin and a torsion spring. During the lowering process of the folding seat, the upper bracket and the torsion spring pin do not rotate relative to the seat board, and the leg rotates around the torsion spring pin. One end of the torsion spring is fixed to the torsion spring pin, and the other end is fixed to the leg, which can achieve the effect of preventing the relative rotation of the leg, thereby slowing down the free fall speed of the folding seat. The installation positions of other hinge points can be inferred by analogy.
[0017] 3. When the damping component is configured to include a damping pin and a damping spring, the cooperation of the damping spring, damping pin and bolt compresses the connecting rod, upper bracket, rear bracket, leg, etc. at the hinge to increase the friction force during rotation, which can also achieve the effect of slowing down the free fall speed of the folding seat.
[0018] 4. One damping component can be provided in a set of four-bar linkages, or damping components can be provided at two, three, or even four hinge points, which can reduce the pressure on a single damping component, play a role in dispersing the force, extend the service life of the damping component, and also increase the damping force; damping components are provided in two sets of symmetrically arranged four-bar linkages to make the force balanced, so that it will not be faster on one side and slower on the other side, and the problem of the folding seat tilting to one side during long-term use can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of a folding seat with slow descent and shock absorption according to Embodiment 1 of the present invention.
[0020] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in
[0021] Figure 3 is another schematic structural diagram of a folding seat with slow descent and shock absorption according to Embodiment 1 of the present invention.
[0022] Figure 4 is a schematic structural diagram of the torsion spring pin of the present invention.
[0023] Figure 5 is a schematic structural diagram of the upper bracket of the present invention.
[0024] Figure 6 is a schematic structural diagram of the leg of the present invention.
[0025] Figure 7 Figure a shows a schematic structural view of the left-handed torsion spring of the present utility model.
[0026] Figure 7 Figure b shows a schematic structural view of the preferred torsion spring of the present utility model.
[0027] Explanation of the reference numerals in the attached drawings: 1, seat plate; 2, leg; 3, rear bracket; 4, upper bracket; 5, connecting rod; 6, damping assembly; 61, torsion spring pin shaft; 62, torsion spring; 63, split pin; 64, anti-rotation groove; 65, anti-rotation hole; 66, circumferential limiting hole; 7, panel; 8, wear-resistant gasket. Specific embodiments
[0028] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0029] Embodiment 1
[0030] Please refer to Figures 1 to 7 , a folding seat with slow descent and shock absorption, including a four-link 5 mechanism and a seat plate 1. The seat plate 1 is installed on the four-link 5 mechanism. The four-link 5 mechanism includes legs 2, a rear bracket 3, an upper bracket 4, and a connecting rod 5. The rear bracket 3 can be fixed to a wall. Two ends of the upper bracket 4 are respectively hinged to the leg 2 and the rear bracket 3. Two ends of the connecting rod 5 are respectively hinged to the leg 2 and the rear bracket 3. The seat plate 1 is installed on the upper bracket 4. A damping assembly 6 is provided in the four-link 5 mechanism. The damping assembly 6 is provided at at least one hinge joint between the upper bracket 4 and the leg 2, the rear bracket 3 and / or between the connecting rod 5 and the leg 2, the rear bracket 3 to buffer the unfolding and folding. By providing the damping assembly 6 at at least one hinge joint of the four-link 5 mechanism, the damping assembly 6 provides a damping force for the rotation of the four-link 5 mechanism to delay its rotation speed, thereby achieving the purpose of delaying the free fall speed of the folding seat, reducing the impact force during the fall, prolonging the service life of the folding seat, and reducing the noise during unfolding and folding.
[0031] Please refer to Figures 1 to 7, preferably, the damping assembly 6 includes a torsion spring pin 61 and a torsion spring 62. The torsion spring pin 61 is disposed through the hinge joint between the upper bracket 4 and the leg 2. The torsion spring pin 61 is circumferentially limitedly connected to the leg 2 or the upper bracket 4. The torsion spring 62 is circumferentially limited to the torsion spring pin 61, and the torsion spring 62 is circumferentially limitedly connected to the upper bracket 4 or the leg 2. Preferably, the torsion spring pin 61 and the upper bracket 4 are circumferentially limitedly connected. The damping assembly 6 is configured to include the torsion spring pin 61 and the torsion spring 62. During the lowering process of the folding seat, the upper bracket 4 and the torsion spring pin 61 do not rotate relative to the seat board 1, and the leg 2 rotates around the torsion spring pin 61. One end of the torsion spring 62 is fixed to the torsion spring pin 61, and the other end is fixed to the leg 2, so as to achieve the effect of preventing the relative rotation of the leg 2, thereby slowing down the free falling speed of the folding seat.
[0032] Please refer to Figure 1 , Figure 2 , Figures 4 to 7 , preferably, the torsion spring pin 61 has a limiting portion, and the cross section of the limiting portion is elliptical or polygonal or D-shaped. The leg 2 or the rear bracket 3 or the upper bracket 4 or the link 5 at the hinge joint of the four-bar link 5 mechanism for axially limiting connection with the torsion spring pin 61 is provided with a circumferential limiting hole 66 that cooperates with the limiting portion to limit the relative rotation of the torsion spring pin 61. Preferably, the circumferential limiting hole 66 is opened in the upper bracket 4 and is D-shaped. Correspondingly, the limiting portion of the torsion spring pin 61 is also D-shaped. After the two are assembled together, they can prevent relative rotation between them; of course, other shapes are also possible, as long as relative rotation between the two can be prevented, and it is not limited thereto.
[0033] Please refer to Figure 1 , Figure 2 , Figures 4 to 7 , preferably, a rotation-preventing groove 64 is provided on the torsion spring pin 61. One end of the torsion spring 62 is inserted into the rotation-preventing groove 64, and the other end of the torsion spring 62 is fixedly connected to the leg 2 or the rear bracket 3 or the upper bracket 4 or the link 5. When the folding seat is unfolded, the leg 2 will rotate relative to the torsion spring pin 61. Preferably, one end of the torsion spring 62 is fixed to the torsion spring pin 61, and the other end is fixed to the leg 2, which will generate resistance during rotation, thereby delaying the unfolding speed of the folding seat, and can also play a boosting role when the folding seat is folded up. Of course, the torsion spring 62 can also be fixed to other components of the four-bar link 5 mechanism and adjusted according to specific situations, and it is not limited thereto. An opening pin 63 is also inserted through the torsion spring pin 61 at the rotation-preventing groove 64 to limit and prevent the torsion spring 62 from coming out. Wear-resistant gaskets 8 are provided at the hinge joints between the upper bracket 4 and the leg 2 and the rear bracket 3, and wear-resistant gaskets 8 are provided at the hinge joints between the link 5 and the leg 2 and the rear bracket 3.
[0034] Please refer toFigure 1 , Figure 2 , Figures 4 to 7 , preferably, a rotation prevention hole 65 is formed in the leg 2 or the rear bracket 3 or the upper bracket 4 or the connecting rod 5 at the hinge where the damping assembly 6 is installed, and the other end of the torsion spring 62 penetrates into the rotation prevention hole 65; wear-resistant gaskets 8 are provided at the hinge joints of the connecting rod 5 with the rear bracket 3 and the leg 2, and wear-resistant gaskets 8 are provided at the hinge joints of the upper bracket 4 with the rear bracket 3 and the leg 2. Preferably, the rotation prevention hole 65 is formed in the leg 2, which is convenient for the fixed connection between the torsion spring 62 and the leg 2. Of course, the rotation prevention hole 65 can also be formed in other components of the four-bar linkage 5 mechanism and adjusted according to specific situations, and is not limited thereto.
[0035] Please refer to Figure 1 , Figure 3 , preferably, there are two sets of left and right four-bar linkages 5, and each set of four-bar linkages 5 is provided with at least one damping assembly 6; the seat plate 1 is fixedly installed on the two upper brackets 4, and a panel 7 is installed on the side of the two legs 2 away from the rear bracket 3; the bottoms of the two legs 2 are integrally connected. The two sets of symmetrically arranged four-bar linkages 5 are both provided with damping assemblies 6, so that the forces on both sides are balanced, and it will not be fast on one side and slow on the other side, which can avoid the problem of the folding chair tilting to one side after long-term use. The torsion springs 62 of the two damping assemblies 6 are respectively a left-handed torsion spring 62 and a right-handed torsion spring 62.
[0036] The working principle of this embodiment is as follows:
[0037] During the lowering process of the folding chair, since the rear bracket 3 is fixed to the wall, according to the characteristics of the parallelogram, the leg 2 opposite to it remains parallel to the wall. During the lowering process, the leg 2 can always remain vertical, and due to the cooperation between the circumferential limiting hole 66 of the upper bracket 4 and the circumferential limiting part of the torsion spring pin 61, the torsion spring pin 61 can be prevented from rotating relative to the seat plate 1, while the leg 2 rotates around the torsion spring pin 61. Since there is a torsion spring 62, one end of the torsion spring 62 is fixed to the torsion spring pin 61 and cannot move, and the other end is fixed to the leg 2. Therefore, the torsion spring 62 can play a role in preventing the relative rotation of the leg 2, thereby slowing down the free fall speed of the folding chair.
[0038] Embodiment Two
[0039] The difference between this embodiment and the first embodiment is that: the damping assembly 6 includes a torsion spring pin 61 and a torsion spring 62. The torsion spring pin 61 is disposed through the hinge joint of the upper bracket 4 and the rear bracket 3. The torsion spring pin 61 is circumferentially limitedly connected to the rear bracket 3 or the upper bracket 4. The torsion spring 62 is circumferentially limited to the torsion spring pin 61. The torsion spring 62 is circumferentially limitedly connected to the upper bracket 4 or the rear bracket 3. For the specific arrangement and working principle of the damping assembly 6, reference can be made to the first embodiment.
[0040] Embodiment Three
[0041] The difference between this embodiment and the first embodiment is that: the damping assembly 6 includes a torsion spring pin 61 and a torsion spring 62. The torsion spring pin 61 is disposed through the hinge joint of the connecting rod 5 and the rear bracket 3. The torsion spring pin 61 is circumferentially limitedly connected to the rear bracket 3 or the connecting rod 5. The torsion spring 62 is circumferentially limited to the torsion spring pin 61. The torsion spring 62 is circumferentially limitedly connected to the connecting rod 5 or the rear bracket 3. For the specific arrangement and working principle of the damping assembly 6, reference can be made to the first embodiment.
[0042] Embodiment Four
[0043] The difference between this embodiment and the first embodiment is that: the damping assembly 6 includes a torsion spring pin 61 and a torsion spring 62. The torsion spring pin 61 is disposed through the hinge joint of the connecting rod 5 and the leg 2. The torsion spring pin 61 is circumferentially limitedly connected to the leg 2 or the connecting rod 5. The torsion spring 62 is circumferentially limited to the torsion spring pin 61. The torsion spring 62 is circumferentially limitedly connected to the connecting rod 5 or the leg 2. For the specific arrangement and working principle of the damping assembly 6, reference can be made to the first embodiment.
[0044] Embodiment Five
[0045] The difference between this embodiment and the first embodiment is that: at two hinge joints, or three hinge joints, or four hinge joints of the four-bar linkage 5 mechanism, a damping assembly 6 is provided. For the specific arrangement and working principle of the damping assembly 6, reference can be made to the first embodiment.
[0046] Embodiment Six
[0047] The difference between this embodiment and the first embodiment is as follows: The damping assembly 6 includes a damping pin shaft and a damping spring. The damping spring is sleeved on the damping pin shaft. The damping pin shaft is sleeved at at least one hinge point of the four-bar linkage 5 mechanism. A bolt is provided on the damping pin shaft. The bolt and the damping pin shaft cooperate to clamp the damping spring at the hinge point, and wear-resistant washers are provided at both ends of the damping spring. For the specific layout and working principle of the damping assembly 6, reference can be made to the first embodiment. When the damping assembly 6 is provided to include a damping pin shaft and a damping spring, the damping spring, the damping pin shaft and the bolt cooperate to press the connecting rod 5, the upper bracket 4, the rear bracket 3, the leg 2, etc. at the hinge point, increasing the friction force during its rotation, and can also achieve the effect of slowing down the free-falling speed of the folding seat.
[0048] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.
[0049] Second, in the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.
[0050] Finally, the above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions within the idea of the present utility model belong to the protection scope of the present utility model.
[0051] It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.
Claims
1. A folding seat with slow descent and shock absorption, comprising a four-bar linkage mechanism and a seat board, wherein the seat board is installed on the four-bar linkage mechanism, and is characterized in that: The four-bar linkage mechanism includes legs, a rear bracket, an upper bracket, and a connecting rod. The rear bracket can be fixed to a wall surface. Two ends of the upper bracket are respectively hinged to the legs and the rear bracket. Two ends of the connecting rod are respectively hinged to the legs and the rear bracket. The seat plate is mounted on the upper bracket. A damping assembly is provided in the four-bar linkage mechanism. The damping assembly is provided at at least one hinge joint between the upper bracket and the legs, the rear bracket, and / or between the connecting rod and the legs, the rear bracket to buffer the unfolding and folding.
2. The folding seat with slow descent and shock absorption according to claim 1, characterized in that: The damping assembly includes a torsion spring pin and a torsion spring. The torsion spring pin is inserted through the hinge joint between the upper bracket and the legs. The torsion spring pin is circumferentially and limit-connected to the legs or the upper bracket. The torsion spring is circumferentially and limit-connected to the torsion spring pin. The torsion spring is circumferentially and limit-connected to the upper bracket or the legs.
3. The folding seat with slow descent and shock absorption according to claim 1, characterized in that: The damping assembly includes a torsion spring pin and a torsion spring. The torsion spring pin is inserted through the hinge joint between the connecting rod and the legs. The torsion spring pin is circumferentially and limit-connected to the legs or the connecting rod. The torsion spring is circumferentially and limit-connected to the torsion spring pin. The torsion spring is circumferentially and limit-connected to the connecting rod or the legs.
4. A folding seat with slow descent and shock absorption according to claim 1, characterized in that: The damping assembly includes a torsion spring pin and a torsion spring. The torsion spring pin is inserted through the hinge joint between the upper bracket and the rear bracket. The torsion spring pin is circumferentially and limit-connected to the rear bracket or the upper bracket. The torsion spring is circumferentially and limit-connected to the torsion spring pin. The torsion spring is circumferentially and limit-connected to the upper bracket or the rear bracket.
5. The folding seat with slow descent and shock absorption according to claim 1, characterized in that: The damping assembly includes a torsion spring pin and a torsion spring. The torsion spring pin is inserted through the hinge joint between the connecting rod and the rear bracket. The torsion spring pin is circumferentially and limit-connected to the rear bracket or the connecting rod. The torsion spring is circumferentially and limit-connected to the torsion spring pin. The torsion spring is circumferentially and limit-connected to the connecting rod or the rear bracket.
6. A folding seat with slow descent and shock absorption according to any one of claims 2-5, characterized in that: The torsion spring pin has a limiting portion. The cross-section of the limiting portion is elliptical, polygonal, or D-shaped. The legs, the rear bracket, the upper bracket, or the connecting rod of the hinge joint of the four-bar linkage mechanism for axially limit-connecting with the torsion spring pin is provided with a circumferential limiting hole that matches the limiting portion to limit the relative rotation of the torsion spring pin.
7. The folding seat with slow descent and shock absorption according to claim 6, characterized in that: A rotation stopping groove is provided on the torsion spring pin. One end of the torsion spring is inserted into the rotation stopping groove. The other end of the torsion spring is fixedly connected to the legs, the rear bracket, the upper bracket, or the connecting rod.
8. A folding seat with slow descent and shock absorption according to claim 7, characterized in that: A rotation stopping hole is opened on the legs, the rear bracket, the upper bracket, or the connecting rod at the hinge joint where the damping assembly is installed. The other end of the torsion spring passes through the rotation stopping hole. Wear-resistant gaskets are provided at the hinge joints between the connecting rod and the rear bracket and the legs. Wear-resistant gaskets are provided at the hinge joints between the upper bracket and the rear bracket and the legs.
9. The folding seat with slow descent and shock absorption according to claim 1, wherein: There are two sets of left and right four-bar linkage mechanisms. Each set of four-bar linkage mechanisms is provided with at least one damping assembly. The seat plate is fixedly mounted on the two upper brackets. Panels are mounted on one sides of the two legs away from the rear bracket. The bottoms of the two legs are integrally connected.
10. A folding seat with slow descent and shock absorption according to claim 1, characterized in that: The damping assembly includes a damping pin shaft and a damping spring. The damping spring is sleeved on the damping pin shaft. The damping pin shaft is sleeved at at least one hinge of the four-bar linkage. A bolt is arranged on the damping pin shaft, and the bolt and the damping pin shaft cooperate to clamp the damping spring at the hinge.