Multi-degree of freedom seat skeleton

Abstract

The utility model relates to the technical field of seat, concretely relates to a multi-degree-of-freedom seat framework. It includes base frame, the inside of base frame is provided with front cross bar and rear cross bar, is provided with support grid pad between front cross bar and rear cross bar, support grid pad includes multistage elastic extension piece, multistage elastic extension piece is set up between front cross bar and rear cross bar in horizontal and longitudinal, wherein: longitudinal multistage elastic extension piece is provided with elastic movable structure between adjacent, elastic movable structure is used for changing height and makes the angle of adjacent two section elastic extension piece form multi-degree-of-freedom state. The utility model changes height according to the required with multiple support grid pad, drives multistage elastic extension piece to change height and angle, realizes that user can change support state according to the required, improves the scope of application.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and more specifically, to a multi-degree-of-freedom seat frame. Background Technology

[0002] The car seat frame is the core structural component of the seat, directly affecting the seat's strength, safety, comfort, and lightweight level. Its main functions are to support the weight of the human body and withstand the static and dynamic loads of the driver and passengers (such as the impact force during sudden braking and collisions). It is a mechanical structure that integrates functions such as support rails, backrest angle adjustment, height adjustment, and lumbar support through adjustment mechanisms.

[0003] Current seat frame supports often use a hollow, one-piece or multi-strip support grid when supporting users. However, the support grid is not convenient for dynamic height adjustment, which makes it inconvenient to adjust the comfort seat height with a high degree of freedom for different users, thus limiting its applicability. Therefore, a multi-degree-of-freedom seat frame is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a multi-degree-of-freedom seat frame to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a multi-degree-of-freedom seat frame, including a base frame. A front crossbar and a rear crossbar are disposed inside the base frame. A supporting mesh pad is disposed between the front and rear crossbars. The supporting mesh pad includes multiple elastic extension segments, which are arranged horizontally and vertically between the front and rear crossbars.

[0006] The longitudinally arranged multiple elastic extension segments are provided with an elastic movable structure between adjacent segments. The elastic movable structure is used to change the height so that the angle between two adjacent elastic extension segments can form a multi-degree-of-freedom state.

[0007] As a further improvement to this technical solution, the multi-degree-of-freedom states include a leg-supported state and a hip-supported state.

[0008] As a further improvement to this technical solution, the longitudinally multi-segment elastic extension members form a support bar, with the front end of the support bar movably connected to the outer wall of the front crossbar and the rear end movably connected to the outer wall of the rear crossbar.

[0009] As a further improvement to this technical solution, the elastic extension member has a corrugated sheet structure and extends when stretched by external force. The elastic extension member is made of lightweight material.

[0010] As a further improvement to this technical solution, the elastic movable structure includes at least a housing, with two symmetrical rotating sleeves opened on one side wall of the housing. A torsion spring is provided inside the rotating sleeve, with one end of the torsion spring fixedly connected to the inner wall of the rotating sleeve and the other end fixedly connected to the outer wall of the elastic extension.

[0011] The torsion spring is sleeved on the end of the elastic extension.

[0012] As a further improvement to this technical solution, a limiting plate is fixedly provided on the outer wall near the end of the elastic extension, and the limiting plate is adapted to and sealably rotated at the end of the rotating sleeve.

[0013] As a further improvement to this technical solution, when multiple housings are arranged laterally, an extension rod is integrally formed between two adjacent housings, and a connecting rod is provided at the bottom of the extension rod.

[0014] As a further improvement to this technical solution, the bottom of the connecting rod is provided with a mounting plate for connecting the driving component.

[0015] As a further improvement to this technical solution, side frames are provided on both sides of the base frame, and a backrest frame is movably connected to the end of the side frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In this multi-degree-of-freedom seat frame, when adjusted to the leg support state, the elastic movable structure near the front crossbar is higher than the elastic movable structure near the rear crossbar, so that the multiple elastic extensions on the front side are gently higher than the multiple elastic extensions on the rear side to support the user, thereby raising the legs.

[0018] When adjusted to the hip support position, the elastic movable structure near the front crossbar is lower than the elastic movable structure near the rear crossbar, so that the multiple elastic extensions on the front side are gently lower than the multiple elastic extensions on the rear side to support the user, thereby lifting the hips.

[0019] Furthermore, users can change the height of multiple elastic movable structures, making the surface of the support grid formed by multiple elastic extensions uneven, which is beneficial for the legs and buttocks to form a static massage with the support grid when braking or driving. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure assembly of this utility model;

[0021] Figure 2 This is a schematic diagram of the supporting grid pad structure of this utility model;

[0022] Figure 3 This is an exploded view of the supporting grid pad structure of this utility model;

[0023] Figure 4 For the present utility model Figure 3 A schematic diagram of the structure at point A;

[0024] Figure 5 This is a demonstration diagram of the adjustment of the support grid pad of this utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 100. Base frame; 110. Front crossbar; 120. Rear crossbar;

[0027] 200. Support grid pad; 210. Elastic extension element; 211. Limiting plate; 220. Elastic movable structure; 221. Housing; 222. Swivel sleeve; 223. Torsion spring; 230. Connecting rod; 240. Extension rod;

[0028] 300, side frame; 400, backrest frame. Detailed Implementation

[0029] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] Please see Figures 1-5 As shown, this embodiment provides a multi-degree-of-freedom seat frame, which is the core structural component of the seat and directly affects the seat's strength, safety, comfort, and lightweight level. It includes a base frame 100, with a front crossbar 110 and a rear crossbar 120 inside. A support mesh pad 200 is provided between the front crossbar 110 and the rear crossbar 120. The support mesh pad 200 includes multiple elastic extension segments 210, which are made of lightweight materials (such as aluminum-magnesium alloy). The multiple elastic extension segments 210 are arranged horizontally and vertically between the front crossbar 110 and the rear crossbar 120, wherein:

[0032] The longitudinally multi-segment elastic extension members 210 are provided with an elastic movable structure 220 between adjacent segments. The elastic movable structure 220 is used to change the height so that the angles of the two adjacent elastic extension members 210 form a multi-degree-of-freedom state.

[0033] Specifically, the multi-degree-of-freedom states include the leg support state and the hip support state;

[0034] Considering that the support mesh on the current seat frame is not convenient for dynamic height adjustment, resulting in limited applicability due to the inconvenience of highly flexible adjustment of the comfort seat cushion height for different users, therefore, if Figures 1-2 As shown, the height of multiple support grid pads 200 can be changed as needed, specifically by the up-and-down movement of the elastic movable structure 220, which drives multiple elastic extensions 210 to change their height and angle.

[0035] like Figure 5 As shown, when adjusted to the leg support state, the elastic movable structure 220 near the front crossbar 110 is higher than the elastic movable structure 220 near the rear crossbar 120, so that the multi-segment elastic extension 210 on the front side is gently higher than the multi-segment elastic extension 210 on the rear side to support the user and achieve leg lifting.

[0036] When adjusted to the hip support state, the elastic movable structure 220 near the front crossbar 110 is lower than the elastic movable structure 220 near the rear crossbar 120, so that the multi-segment elastic extension 210 on the front side is lower than the multi-segment elastic extension 210 on the rear side to support the user and achieve hip lifting.

[0037] Furthermore, users can change the height of multiple elastic movable structures 220, making the surface of the support grid formed by multiple elastic extensions 210 uneven, which is beneficial for the legs and buttocks to form a static massage with the support grid when braking or bumping during driving.

[0038] In summary, the improvement of this utility model lies in the fact that users can change the support state according to their needs, thereby increasing its applicability.

[0039] Based on the above, the specific structure will be further disclosed in detail:

[0040] The longitudinally multi-segment elastic extension 210 forms a support bar. The front end of the support bar is movably connected to the outer wall of the front crossbar 110, and the rear end is movably connected to the outer wall of the rear crossbar 120. This enables the front crossbar 110 and the rear crossbar 120 to support the longitudinally multi-segment elastic extension 210. Due to the movable connection, both the front and rear ends of the support bar can rotate to adapt to different states and ensure structural integrity. This is known in the technical field and will not be described in detail here.

[0041] Furthermore, the elastic extension 210 has a corrugated sheet structure, and the elastic extension 210 extends when pulled by external force. Conversely, when the external force is removed, it can return to its original position under the elastic force of the tensile deformation. Moreover, the sheet structure can reduce the weight of the bottom frame support.

[0042] Then, to enable the elastic movable structure 220 to change the angle between two adjacent elastic extension segments 210, such as... Figure 3 and Figure 4As shown, the specific structure of the elastic movable structure 220 is disclosed in detail, such that the elastic movable structure 220 includes at least a shell 221. Two symmetrical rotating sleeves 222 are provided on one side wall of the shell 221. Torsion springs 223 are provided inside the rotating sleeves 222. One end of the torsion springs 223 is fixedly connected to the inner wall of the rotating sleeves 222, and the other end is fixedly connected to the outer wall of the elastic extension 210.

[0043] The torsion spring 223 is sleeved on the end of the elastic extension 210. When the user sits on the elastic extension 210 and the shell 221, on the one hand, the user's body weight is borne on the elastic extension 210 and the shell 221, causing deformation and twisting, which can double buffer the impact force during sudden braking and collision, and improve comfort. On the other hand, when the height of the shell 221 changes, it can pull the end of the elastic extension 210 to rotate inside the rotating sleeve 222, thereby changing the state of the entire bottom frame.

[0044] Furthermore, in order to improve the stability of rotation between the end of the elastic extension 210 and the rotating sleeve 222, a limiting plate 211 is fixedly provided on the outer wall near the end of the elastic extension 210. The limiting plate 211 is adapted to and seals the rotation at the end of the rotating sleeve 222. On the one hand, it realizes the formation of a relatively closed space between the limiting plate 211 and the inside of the rotating sleeve 222 to accommodate the torsion spring 223, reducing the damage of the torsion spring 223 due to long-term exposure to air and improving its service life. On the other hand, the limiting plate 211 is adapted to rotation and can axially limit the rotation of the elastic extension 210, avoiding left and right swaying and improving stability.

[0045] It is worth noting that when multiple housings 221 are arranged horizontally, an extension rod 240 is integrally formed between two adjacent housings 221. A connecting rod 230 is provided at the bottom of the extension rod 240. By adjusting the height of the connecting rod 230, the height of the multiple housings 221 in the horizontal direction can be adjusted simultaneously, making it easier to raise the legs or buttocks simultaneously.

[0046] Specifically, the bottom of the connecting rod 230 is provided with a mounting plate for connecting the driving component. The driving component can be a cylinder. The cylinder piston rod is connected to the mounting plate to make linear motion, making it easier to change the height of the connecting rod 230. This technology is common knowledge known to those skilled in the art and will not be described in detail here.

[0047] In addition, to ensure the integrity of the seat frame, side frames 300 are provided on both sides of the base frame 100. The backrest frame 400 is movably connected to the end of the side frame 300. The two are movably connected by a shaft engagement direction, so that the angle between the backrest frame 400 and the base frame 100 can be adjusted. Furthermore, the side frames 300 are used to protect the user from the left and right sides, thereby improving safety.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-degree-of-freedom seat frame, comprising a base frame (100), wherein a front crossbar (110) and a rear crossbar (120) are provided inside the base frame (100), characterized in that: A support grid pad (200) is provided between the front crossbar (110) and the rear crossbar (120). The support grid pad (200) includes multiple elastic extensions (210), which are arranged horizontally and vertically between the front crossbar (110) and the rear crossbar (120), wherein: The longitudinally arranged multiple elastic extension segments (210) are provided with an elastic movable structure (220) between adjacent segments. The elastic movable structure (220) is used to change the height to cause the angle of the two adjacent elastic extension segments (210) to form a multi-degree-of-freedom state.

2. The multi-degree-of-freedom seat frame according to claim 1, characterized in that: The multi-degree-of-freedom states include the leg-supported state and the hip-supported state.

3. The multi-degree-of-freedom seat frame according to claim 1, characterized in that: The longitudinally multi-segment elastic extension (210) forms a support bar, with the front end of the support bar movably connected to the outer wall of the front crossbar (110) and the rear end movably connected to the outer wall of the rear crossbar (120).

4. The multi-degree-of-freedom seat frame according to claim 1, characterized in that: The elastic extension (210) has a corrugated sheet structure and extends when stretched by an external force.

5. The multi-degree-of-freedom seat frame according to claim 4, characterized in that: The elastic extension (210) is made of lightweight material.

6. The multi-degree-of-freedom seat frame according to claim 4, characterized in that: The elastic movable structure (220) includes at least a housing (221). Two symmetrical rotating sleeves (222) are provided on one side wall of the housing (221). A torsion spring (223) is provided inside the rotating sleeve (222). One end of the torsion spring (223) is fixedly connected to the inner wall of the rotating sleeve (222), and the other end is fixedly connected to the outer wall of the elastic extension (210). The torsion spring (223) is sleeved on the end of the elastic extension (210).

7. The multi-degree-of-freedom seat frame according to claim 6, characterized in that: A limiting plate (211) is fixedly provided on the outer wall near the end of the elastic extension (210), and the limiting plate (211) is adapted to and sealed to rotate at the end of the rotating sleeve (222).

8. The multi-degree-of-freedom seat frame according to claim 6, characterized in that: When multiple housings (221) are arranged laterally, an extension rod (240) is integrally formed between two adjacent housings (221), and a connecting rod (230) is provided at the bottom of the extension rod (240).

9. The multi-degree-of-freedom seat frame according to claim 8, characterized in that: The bottom of the connecting rod (230) is provided with a mounting plate for connecting the driving component.

10. The multi-degree-of-freedom seat frame according to claim 1, characterized in that: The base frame (100) is provided with side frames (300) on both sides, and the end of the side frame (300) is movably connected to a backrest frame (400).

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