Seat tilting mechanism and seat
By incorporating a rotating shaft design that integrates a backrest support, lumbar support, and elastic pads into the seat, the problem of lack of lumbar support in traditional seats is solved, achieving strong lumbar support and comfort during reclining and preventing the accumulation of lumbar stress.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 马儒一
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-12
AI Technical Summary
In traditional chair designs, gaps appear at the lumbar position when the backrest is reclined, resulting in a lack of lumbar support for the user. Prolonged use can easily cause accumulated stress on the intervertebral discs, affecting health.
Design a seat tilting mechanism, including a backrest support, a backrest body, a lumbar support, and upper and lower elastic plates. By setting a rotating shaft in the middle of the backrest support and cooperating with the elastic plates, ensure that the lumbar support always fits the user's waist during the tilting process, providing strong support.
During the reclining process, the lumbar support and backrest remain in close contact with the back, providing complete support, eliminating lumbar stress, preventing discomfort from prolonged sitting, and improving user comfort and health protection.
Smart Images
Figure CN224219774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chair seating technology, and in particular to a seat tilting mechanism and a seat. Background Technology
[0002] Traditional seat designs integrate the tilting mechanism directly into the bottom of the seat cushion. The tilting angle of the backrest and seat cushion changes under the seat cushion. Because the axis of rotation for tilting is under the seat cushion, which differs from the axis of rotation when the body tilts back (located at the tailbone), the resulting tilting trajectories differ. This means that while the upper part of the backrest can support the shoulders when the backrest is tilted back, a significant gap remains at the lumbar region, preventing the lower back from contacting the backrest and leaving it unsupported. Over time, this lack of support can lead to accumulated stress on the intervertebral discs, potentially harming health. Utility Model Content
[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a seat tilting mechanism and seat that can provide strong and comfortable lumbar support to the user during the tilting process, eliminate lumbar stress, provide the user with a comfortable sitting experience and health protection, and prevent the user from experiencing discomfort from prolonged sitting.
[0004] To achieve the above objectives, a first aspect of this utility model provides a seat tilting mechanism, including a backrest support, a backrest body, a lumbar support, an upper elastic plate, and a lower elastic plate. The upper end of the backrest support is connected to the upper elastic plate, the upper middle part of the backrest body is connected to the upper end of the upper elastic plate, the upper end of the lumbar support is rotatably disposed at the front middle part of the backrest support, the lower end of the lumbar support is connected to the lower middle part of the backrest body, the front end of the lower elastic plate is connected to the lumbar support and / or the backrest body, and the rear end of the lower elastic plate is connected to the lower end of the backrest support.
[0005] In one embodiment, the upper elastic sheet is sheet-shaped, the lower elastic sheet has an arched structure, and the arching direction of the lower elastic sheet is upward.
[0006] In one embodiment, the lower end of the back pad body is isolated from the back pad support, and the front end of the lower elastic sheet is connected to the waist pad and the back pad body.
[0007] In one embodiment, a rotating shaft is provided at the center of the front side of the back support bracket. The rotating shaft is located between the upper elastic sheet and the lower elastic sheet. A sleeve is provided at the upper end of the waist pad, and the sleeve is movably sleeved on the rotating shaft.
[0008] In one embodiment, the lumbar pad has an arc-shaped structure, and the arch of the lumbar pad faces the front side of the back pad body.
[0009] In one embodiment, the lower end of the lumbar pad is integrally formed with the lower middle part of the back pad body.
[0010] In one embodiment, a fixed bracket is connected to the bottom front side of the back pad bracket, and the fixed bracket and the back pad bracket form an L-shaped structure.
[0011] In one embodiment, a cushion is provided at the upper end of the fixed bracket, and a fixing part is provided at the bottom of the fixed bracket.
[0012] Compared with traditional technology, the beneficial effects of the seat tilting mechanism according to the embodiments of this utility model are:
[0013] The seat tilting mechanism of this utility model includes a backrest support, a backrest body, a lumbar support, an upper elastic plate, and a lower elastic plate. The lower end of the upper elastic plate is connected to the upper end of the backrest support, and the upper end of the upper elastic plate is connected to the middle of the upper end of the backrest body. A rotating shaft is provided in the middle of the backrest support. The upper end of the lumbar support is rotatably fitted onto the rotating shaft through a sleeve, and the lower end of the lumbar support is connected to the middle of the lower end of the backrest body. A lower elastic plate is provided between the backrest body, the lumbar support, and the backrest support. In this way, when the user reclines, the weight of the shoulders presses on the upper part of the backrest body, causing it to tilt backward. The backrest body rotates, driving its lower part to move forward simultaneously. At this time, the lower elastic plate under the backrest support... The elastic pad pushes the lumbar support forward under its own elasticity, causing the lumbar support to press against and conform to the user's lower back. At the same time, the upper elastic pad moves backward, generating a certain reaction force, which makes the tilting and rotation of the backrest cushion elastic, increasing the user's comfort. Furthermore, because a tilting and rotation fulcrum is added in the middle of the backrest support, the upper part of the backrest cushion and the lumbar support can basically ensure that they are always in contact with the entire back of the user during the tilting process. This provides complete and strong support for the user's back, effectively preventing the user's lower back from detaching from the backrest cushion and causing stress accumulation, thus providing the user with a comfortable sitting experience and health protection.
[0014] A second aspect of this utility model provides a seat including the seat tilting mechanism described in any of the preceding embodiments. The seat according to this utility model provides strong and comfortable lumbar support to the user throughout the tilting process, eliminating lumbar stress, providing a comfortable sitting experience and health protection, and preventing discomfort from prolonged sitting.
[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the seat tilting mechanism according to an embodiment of the present utility model;
[0017] Figure 2 This is a side view of the seat tilting mechanism according to an embodiment of the present utility model;
[0018] Figure 3 One of the reference diagrams shows the tilting process of the seat tilting mechanism in an embodiment of this utility model;
[0019] Figure 4 The second reference figure shows the tilting process of the seat tilting mechanism in an embodiment of this utility model.
[0020] Figure 5 This is a demonstration diagram of the use of the seat according to an embodiment of the present utility model.
[0021] Explanation of reference numerals in the attached drawings: 10, back support bracket; 11, rotating shaft; 12, fixed bracket; 13, seat cushion; 20, back support body; 21, lumbar support; 22, sleeve; 30, upper elastic plate; 40, lower elastic plate. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0024] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0025] In related technologies, the tilting mechanism is directly assembled at the bottom of the seat cushion. The tilting angle change of the backrest and seat cushion occurs under the seat cushion. Because the rotation axis of the tilting is under the seat cushion, which is different from the rotation axis of the human body when tilting at the tailbone, the resulting tilting trajectories are different. This causes a situation where, when the backrest tilts, although the upper part of the backrest can touch the shoulders, a large gap will be created at the lumbar region, preventing the lower back from contacting the backrest and leaving it unsupported. As a result, prolonged use can easily lead to accumulated stress on the intervertebral discs due to lack of support in the lower back, thereby harming human health.
[0026] Therefore, this utility model embodiment provides a seat tilting mechanism and a seat. The seat tilting mechanism and seat according to this utility model embodiment can provide strong and comfortable lumbar support to the user throughout the tilting process, eliminating lumbar stress, providing a comfortable sitting experience and health protection, and preventing discomfort from prolonged sitting.
[0027] Please see Figures 1 to 5 The first aspect of this utility model provides a seat tilting mechanism, including a backrest support 10, a backrest body 20, a lumbar support 21, an upper elastic piece 30, and a lower elastic piece 40. The upper end of the backrest support 10 is connected to the upper elastic piece 30, the upper middle part of the backrest body 20 is connected to the upper end of the upper elastic piece 30, the upper end of the lumbar support 21 is rotatably disposed on the front middle part of the backrest support 10, the lower end of the lumbar support 21 is connected to the lower middle part of the backrest body, the front end of the lower elastic piece 40 is connected to the lumbar support 21 and / or the backrest body 20, and the rear end of the lower elastic piece 40 is connected to the lower end of the backrest support 10.
[0028] Specifically, in this embodiment of the invention, the upper elastic sheet 30 is sheet-shaped, and the lower elastic sheet 40 has an arched structure, with the arch of the lower elastic sheet 40 pointing upwards. The lower end of the back pad body 20 is isolated from the back pad support 10, and the front end of the lower elastic sheet 40 is connected to the waist pad 21 and the back pad body 20. Furthermore, the lower end of the lumbar pad 21 is integrally formed with the lower middle part of the back pad body 20. In this way, the front end of the lower elastic piece 40 is connected and fixed to the lower rear side of the lumbar pad 21 and the lower rear side of the back pad body 20, respectively. This makes the compactness and integrity between the back pad body 20 and the lumbar pad 21 stronger. When the upper part of the back pad body 20 moves backward, the front end of the lower elastic piece 40 can work together on the lower end of the back pad body 20 and the lower end of the lumbar pad 21, causing the lower ends of the back pad body 20 and the lumbar pad 21 to move forward as a whole. This allows the lumbar pad 21 to better fit the user's lower back and provide better support.
[0029] To better conform the lumbar support 21 to the user's lower back, in this embodiment of the invention, the lumbar support 21 is an arc-shaped sheet structure, with its arch facing the front of the backrest body 20. Furthermore, a rotating shaft 11 is provided at the center of the front side of the backrest support 10 in this embodiment of the invention. The rotating shaft 11 is located between the upper elastic sheet 30 and the lower elastic sheet 40. A sleeve 22 is provided at the upper end of the lumbar support 21, and the sleeve 22 is movably fitted onto the rotating shaft 11. Thus, by adding a tilting rotation fulcrum at the center of the backrest support 10, this embodiment of the invention ensures that during the user's tilting motion, the upper part of the backrest body 20 and the lumbar support 21 can consistently maintain contact with the entire back of the user, providing complete and strong support for the user's back. This effectively prevents stress accumulation in the user's lower back due to the backrest body 20 becoming unsupported, providing a comfortable sitting experience and health protection for the user.
[0030] It should be noted that the back support bracket 10 of this utility model can be designed into rectangular, elliptical, polygonal or other shapes according to actual needs, and the back support body 20 of this utility model can be designed into frame, square, polygonal or other shapes according to actual needs.
[0031] Optionally, in some embodiments of this utility model, a fixed bracket 12 is connected to the bottom front side of the backrest support 10, and the fixed bracket 12 and the backrest support 10 form an L-shaped structure. A seat cushion 13 is provided at the upper end of the fixed bracket 12, and a fixing part is provided at the bottom of the fixed bracket 12.
[0032] Compared with traditional technology, the seat tilting mechanism of this utility model includes a backrest support 10, a backrest body 20, a lumbar support 21, an upper elastic plate 30, and a lower elastic plate 40. The lower end of the upper elastic plate 30 is connected to the upper end of the backrest support 10, and the upper end of the upper elastic plate 30 is connected to the middle of the upper end of the backrest body 20. A rotating shaft 11 is provided in the middle of the backrest support 10. The upper end of the lumbar support 21 is rotatably fitted onto the rotating shaft 11 through a sleeve 22, and the lower end of the lumbar support 21 is connected to the middle of the lower end of the backrest body 20. The lower elastic plate 40 is provided between the backrest body 20, the lumbar support 21, and the backrest support 10. In this way, when the user reclines, the weight of the shoulders presses on the upper part of the backrest body 20, causing it to tilt backward. The backrest body 20 rotates, which in turn drives the lower part of the backrest support 20 to tilt backward. Simultaneously, as the backrest support 10 moves forward, the lower elastic plate under the backrest support 10 pushes the lumbar pillow forward under its own elasticity, causing the lumbar pillow to press against and fit against the user's lower back. At the same time, the upper elastic plate moves backward, generating a certain reaction force, which makes the tilting and rotation of the backrest body 20 elastic, increasing the user's comfort. Furthermore, because a tilting and rotation fulcrum is added in the middle of the backrest support 10, the upper part of the backrest body 20 and the lumbar pad 21 can basically ensure that they always fit against the entire back of the user during the tilting process, thus providing complete and strong support for the user's back. This effectively prevents the user's lower back from detaching from the backrest body 20 and causing stress accumulation, providing the user with a comfortable sitting experience and health protection.
[0033] A second aspect of this utility model provides a seat including the seat tilting mechanism described in any of the preceding embodiments. The seat according to this utility model provides strong and comfortable lumbar support to the user throughout the tilting process, eliminating lumbar stress, providing a comfortable sitting experience and health protection, and preventing discomfort from prolonged sitting.
[0034] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the seat tilting mechanism and seat range of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A seat tilting mechanism, characterized in that: The device includes a back support frame, a back support body, a lumbar support, an upper elastic sheet, and a lower elastic sheet. The upper end of the back support frame is connected to the upper elastic sheet. The upper middle part of the back support body is connected to the upper end of the upper elastic sheet. The upper end of the lumbar support is rotatably disposed at the front middle part of the back support frame. The lower end of the lumbar support is connected to the lower middle part of the back support body. The front end of the lower elastic sheet is connected to the lumbar support and / or the back support body. The rear end of the lower elastic sheet is connected to the lower end of the back support frame.
2. The seat tilting mechanism according to claim 1, characterized in that: The upper elastic sheet is sheet-shaped, and the lower elastic sheet has an arched structure, with the arch of the lower elastic sheet pointing upwards.
3. The seat tilting mechanism according to claim 2, characterized in that: The lower end of the back pad body is isolated from the back pad support, and the front end of the lower elastic piece is connected to the waist pad and the back pad body.
4. The seat tilting mechanism according to claim 1, characterized in that: A rotating shaft is provided at the center of the front side of the back support bracket. The rotating shaft is located between the upper elastic sheet and the lower elastic sheet. A sleeve is provided at the upper end of the waist pad. The sleeve is movably sleeved on the rotating shaft.
5. The seat tilting mechanism according to claim 1, characterized in that: The lumbar pad has an arc-shaped structure, and the arch of the lumbar pad faces the front side of the back pad body.
6. The seat tilting mechanism according to claim 5, characterized in that: The lower end of the lumbar pad is integrally formed with the lower middle part of the back pad body.
7. The seat tilting mechanism according to claim 1, characterized in that: A fixed bracket is connected to the bottom front side of the back pad support, and the fixed bracket and the back pad support form an L-shaped structure.
8. The seat tilting mechanism according to claim 7, characterized in that: The upper end of the fixed bracket is provided with a cushion, and the bottom of the fixed bracket is provided with a fixing part.
9. A type of seat, characterized in that: Includes the seat tilting mechanism according to any one of claims 1 to 8.