Modular electric seat support return structure

Abstract

The utility model relates to the technical field of household articles, especially a modular electric seat supporting reset structure, which comprises: a special-shaped connecting rod, including a main rod body and first and second extension sections located at both ends of the main rod body; first, second and third connecting rods that are sequentially connected to form a three-connecting-rod structure, the end of the three-connecting-rod structure on the first connecting rod is rotatably connected to the end of the first extension section, and the end on the third connecting rod is rotatably connected to the connection between the main rod body and the second extension section; an elastic structure, one end of which is connected to the main rod body and the other end of which is connected to the first or second connecting rod; the elastic structure has a minimum pulling force greater than or equal to zero when the second connecting rod and the end of the second extension section abut. In the utility model, the connecting rod combination is installed on the electric seat as a whole modular supporting reset structure after being combined with the elastic structure, wherein the elastic structure can provide all or part of the reset force, and the installation process is simple and efficient.

Description

Technical Field

[0001] This utility model relates to the field of home furnishing technology, and in particular to a modular electric seat support and reset structure. Background Technology

[0002] In traditional electric seats, the support structure located between the base structure and the hip support structure usually adopts a multi-link combination. The changes in the relative angle and position between each link are achieved by the power output of the electric push rod, thereby completing the sitting posture adjustment.

[0003] Currently, during the process of resetting each link to a compact state, there is a method of resetting with the assistance of springs; however, due to the complexity of the current link combination, the spring is often connected to one of the links at one end and to the base structure of the electric seat at the other end. That is, the spring is an external structure relative to the link combination. The above support structure has the problems of structural dispersion and complex assembly. Summary of the Invention

[0004] This invention provides a modular electric seat support and reset structure, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A modular electric seat support and repositioning structure includes: An irregularly shaped connecting rod includes a main rod body and a first extension segment and a second extension segment located at both ends of the main rod body; The first link, the second link, and the third link are rotatably connected in sequence to form a three-link structure. The end of the three-link structure located on the first link is rotatably connected to the end of the first extension section, and the end of the third link is rotatably connected to the connection between the main body and the second extension section. At least one elastic structure, one end of which is connected to the main rod and the other end of which is connected to the first or second connecting rod; The elastic structure has a minimum tensile force when the second connecting rod abuts against the end of the second extension section, and the minimum tensile force is greater than or equal to zero.

[0006] Furthermore, the second extension includes a first side and a second side connected at right angles, the first side being connected to the main rod, and the second side providing a position to abut against the second connecting rod; The second link includes a third side and a fourth side connected at right angles. The two ends of the third side are connected to the first link and the third link, respectively, and the fourth side abuts against the second side.

[0007] Furthermore, the first side is provided with a deformation structure that is recessed on one side and protrudes on the opposite side.

[0008] Furthermore, the irregularly shaped connecting rod has a first connecting hole on the inner side of the connection between the main rod and the second extension section, and the first connecting hole is for the end of the elastic structure to be connected.

[0009] Furthermore, the main rod body includes a fifth side and a sixth side connected at right angles. The connecting edge of the fifth side and the sixth side is provided with a reinforcing structure that is recessed on the outside and protruding on the inside. The reinforcing structure is located between the rotation connection point of the third connecting rod and the first connecting hole.

[0010] Furthermore, a second connecting hole is provided at the end of the second connecting rod that is connected to the first connecting rod, and the second connecting hole is located inside the rotatable connection point between the second connecting rod and the first connecting rod; The two ends of the elastic structure are fixed through the first connecting hole and the second connecting hole, respectively.

[0011] Furthermore, two elastic structures are provided, one end of which is connected to the middle of the main rod and the other end is connected to the middle of the first connecting rod.

[0012] Furthermore, the two elastic structures are arranged in parallel.

[0013] Furthermore, the angle between the first extension segment and the main shaft is an obtuse angle, and the angle between the second extension segment and the main shaft is a right angle.

[0014] Furthermore, the elastic structure is a spring.

[0015] The following technical effects can be achieved through the technical solution of this utility model: In this invention, the main rod body, first extension section, first connecting rod, second connecting rod, and third connecting rod of the irregularly shaped linkage form a closed and structurally simplified linkage assembly. After the linkage assembly is combined with the elastic structure, it can be installed on the electric seat as an integral modular support and reset structure. The elastic structure can provide all or part of the reset force, and the installation process is simple and efficient. Specifically, the main rod body of the irregularly shaped linkage can be connected to the base-like structure of the electric seat, while the second connecting rod can be connected to the hip support-like structure of the electric seat. In this way, when the angle between the first connecting rod and the first extension section, and the angle between the third connecting rod and the main rod body change synchronously, the height and angle of the second connecting rod relative to the main rod body change, thereby allowing the electric seat to achieve various desired sitting postures. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 An exploded view of the modular electric seat support and reset structure; Figure 2 This is a schematic diagram of the irregularly shaped connecting rod (including a partial enlargement). Figure 3 This is a schematic diagram (including enlarged details) showing the connection between the irregularly shaped link, the first link, and the elastic structure. Figure 4 This is a schematic diagram showing the state in which the second extension section abuts against the second connecting rod (including a partial enlargement). Figure 5 A schematic diagram (including partial enlargement) showing the elastic structure fixed through the first and second connecting holes. Reference numerals: 1. Irregular connecting rod; 11. First extension segment; 11a. First rotation point; 12. Second extension segment; 12a. Support point; 12b. Second rotation point; 12c. First side; 13. Main rod body; 13a. Fifth side; 13b. Sixth side; 14. First connecting hole; 15. Reinforcing structure; 2. First connecting rod; 3. Second connecting rod; 31. Third side; 32. Fourth side; 33. Second connecting hole; 4. Third connecting rod; 5. Elastic structure. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] like Figures 1-5 As shown, a modular electric seat support reset structure includes: The irregularly shaped link 1 includes a main rod 13 and a first extension segment 11 and a second extension segment 12 located at both ends of the main rod 13; a first link 2, a second link 3, and a third link 4 are sequentially rotatably connected to form a three-link structure. The end of the three-link structure located on the first link 2 is rotatably connected to the end of the first extension segment 11, and the end of the third link 4 is rotatably connected to the connection between the main rod 13 and the second extension segment 12; at least one elastic structure 5 is provided, with one end connected to the main rod 13 and the other end connected to the first link 2 or the second link 3; the elastic structure 5 has a minimum tensile force when the second link 3 and the end of the second extension segment 12 abut against each other, and the minimum tensile force is greater than or equal to zero.

[0020] See Figure 2 This illustrates a specific structural form of the irregularly shaped connecting rod 1, where a support point 12a is formed at the end of the second extension segment 12, a first rotation point 11a is provided at the end of the first extension segment 11, and a second rotation point 12b is provided at the connection between the main rod body 13 and the second extension segment 12. (See also...) Figure 3 and 4 The end of the three-bar linkage located on the first link 2 is rotatably connected to the end of the first extension 11 through the first rotation point 11a; the end of the three-bar linkage located on the third link 4 is rotatably connected to the connection between the main rod 13 and the second extension 12 through the second rotation point 12b.

[0021] During operation, the main rod 13, first extension 11, first link 2, second link 3, and third link 4 of the irregularly shaped link 1 form a closed link assembly. After the link assembly is combined with the elastic structure 5, it can be installed on the electric seat as a modular support and reset structure. The elastic structure 5 can provide all or part of the reset force, and the installation process is simple and efficient. As a specific implementation, the main rod 13 of the irregularly shaped link can be connected to the base structure of the electric seat, while the second link 3 can be connected to the hip support structure of the electric seat. In this way, when the angle between the first link 2 and the first extension 11, and the angle between the third link 4 and the main rod 13 change synchronously, the height and angle of the second link 3 relative to the main rod 13 change, thereby allowing the electric seat to achieve various desired sitting postures.

[0022] The second extension segment 12 and the corresponding support point 12a in this embodiment can be set to limit the extreme position when the internal area of ​​the link assembly decreases and changes towards a compact reset state. Specifically, when the internal area of ​​the link assembly decreases due to elastic reset force or, if necessary, additional external power, the internal area decreases when the second link 3 abuts against the support point 12a of the second extension segment 12, reaching the reset limit state.

[0023] In this embodiment, when the second link 3 abuts against the support point 12a, the elastic structure 5 has a minimum tensile force, which is greater than or equal to zero. When the minimum tensile force is zero, the installation and disassembly of the elastic structure 5 are relatively easy, and maintenance and replacement operations can be performed. In this state, the elastic structure 5 no longer provides elastic tensile force for resetting. As another implementation, when the minimum tensile force is greater than zero, in the extreme state, the elastic structure 5 still has the function of maintaining the abutment relationship between the second link 3 and the support point 12a.

[0024] The two minimum tensile force conditions of the elastic structure 5 and above can be selected according to the actual use scenario and usage requirements, and all are within the protection scope of this utility model.

[0025] As a preferred embodiment of the above, see Figure 2 and Figure 4 The second extension 12 includes a first side 12c and a second side connected at right angles. The first side 12c is connected to the main rod 13, and the second side provides a position to abut against the second connecting rod 3, i.e., support point 12a. The second connecting rod 3 includes a third side 31 and a fourth side 32 connected at right angles. The two ends of the third side 31 are connected to the first connecting rod 2 and the third connecting rod 4, respectively, and the fourth side 32 abuts against the second side.

[0026] In this preferred embodiment, the two sides of the second extension 12 can each perform different functions. The second side providing the support point 12a, through reasonable dimensional design, can provide sufficient support area to achieve stable positioning of the second link 3 and avoid collision damage to the second link 3 under the impact of the reset movement. To further protect the second link 3, an elastic buffer structure, such as a rubber pad, can be installed at the support point 12a.

[0027] Correspondingly, the second link 3 is provided with a third side 31 and a fourth side 32 connected at right angles, which strengthens the structure of the second link 3. At the same time, the fourth side 32 also abuts against the second extension section 12 through a larger contact area, thus avoiding the impact on the second extension section 12.

[0028] As a preferred embodiment of the above, see also Figure 2 The first side 12c has a deformable structure with a recess on one side and a protrusion on the opposite side. In a preferred embodiment, the corresponding structure of the recess and the protrusion can be obtained by stamping.

[0029] As a preferred embodiment of the above, see below. Figure 2 The irregularly shaped connecting rod 1 has a first connecting hole 14 on the inner side of the connection between the main rod 13 and the second extension 12. The first connecting hole 14 is used for the end connection of the elastic structure 5. The location of the first connecting hole 14 allows the tensile force to be evenly distributed to the main rod 13 and the second extension 12, reducing the risk of stress concentration and enhancing the structural stability during the resetting process. In specific implementations, the structural area at the connection between the main rod 13 and the second extension 12 can be increased to provide sufficient space for the first connecting hole 14. In this preferred embodiment, regardless of whether one or more elastic structures 5 are provided, the first connecting hole 14 is preferably used for the end connection of only one elastic structure 5.

[0030] As a preferred embodiment of the above, see below. Figure 2 and 4The main rod 13 includes a fifth side 13a and a sixth side 13b connected at right angles. The connecting edge of the fifth side 13a and the sixth side 13b is provided with a reinforcing structure 15 that is recessed on the outside and protruded on the inside. The reinforcing structure 15 is located between the rotation connection point of the third link 4 and the first connecting hole 14.

[0031] In this preferred embodiment, the main rod 13 is provided with a fifth side 13a and a sixth side 13b connected at right angles, which strengthens the structure of the main rod 13. The provision of the local reinforcement structure 15 improves the structural stability of the rotating connection point and the first connection hole 14. Specifically, the rotating connection point can be provided through the fifth side 13a.

[0032] In this invention, the main rod 13 and the second connecting rod 3 are both connected at right angles on both sides, which can also provide a position for connection with the base structure and hip support structure of the electric seat, thereby improving the convenience and stability of the connection.

[0033] As a preferred embodiment of the above, such as Figure 4 and 5 As shown, the second connecting rod 3 is provided with a second connecting hole 33 at the end connected to the first connecting rod 2. The second connecting hole 33 is located inside the rotatable connection point between the second connecting rod 3 and the first connecting rod 2; the two ends of an elastic structure 5 are fixed through the first connecting hole 14 and the second connecting hole 33 respectively.

[0034] In this preferred embodiment, the placement of the first connecting hole 14 and the second connecting hole 33 provides maximum dimensional space for the elastic structure 5. Under the same structural conditions, a larger dimensional space can provide a greater elastic restoring force. The placement of the second connecting hole 33 also allows the tensile force to be evenly distributed to the first connecting rod 2 and the second connecting rod 3, reducing the risk of stress concentration and enhancing the structural stability during the restoring process.

[0035] As a preferred embodiment of the above, such as Figure 1 and 3 As shown, in this preferred embodiment, two elastic structures 5 are provided. Besides the one elastic structure 5 fixed via the first connecting hole 14 and the second connecting hole 33, one end of the other elastic structure 5 is connected to the middle of the main rod 13, and the other end is connected to the middle of the first connecting rod 2. The provision of two elastic structures 5 makes the restoring force more stable and reliable. As a preferred embodiment, the two elastic structures 5 are arranged in parallel to ensure the consistency of the tensile force direction.

[0036] As a preferred embodiment of the above implementation, the angle between the first extension segment 11 and the main rod 13 is an obtuse angle, and the angle between the second extension segment 12 and the main rod 13 is a right angle; the obtuse angle can optimize the internal space of the linkage assembly, while the right angle position can provide better stability when providing support.

[0037] Preferably, both the second extension section 12 and the first connecting rod 2 are provided with a deformation structure that is recessed on one side and protruded on the opposite side; in a preferred embodiment, the corresponding structure of the recess and the protrusion can be obtained by stamping.

[0038] As a preferred embodiment of the above, the elastic structure 5 is a spring. Springs are a conventional structural form, which is convenient for selection and installation, and can provide a stable elastic restoring force, making it a better implementation method.

[0039] 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 illustrative of the principles of this 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 modular electric seat support and resetting structure, characterized in that, include: An irregularly shaped connecting rod includes a main rod body and a first extension segment and a second extension segment located at both ends of the main rod body; The first link, the second link, and the third link are rotatably connected in sequence to form a three-link structure. The end of the three-link structure located on the first link is rotatably connected to the end of the first extension section, and the end of the third link is rotatably connected to the connection between the main body and the second extension section. At least one elastic structure, one end of which is connected to the main rod and the other end of which is connected to the first or second connecting rod; The elastic structure has a minimum tensile force when the second connecting rod abuts against the end of the second extension section, and the minimum tensile force is greater than or equal to zero.

2. The modular electric seat support and reset structure according to claim 1, characterized in that, The second extension includes a first side and a second side connected at right angles, the first side being connected to the main rod, and the second side providing a position to abut against the second connecting rod; The second link includes a third side and a fourth side connected at right angles. The two ends of the third side are connected to the first link and the third link, respectively, and the fourth side abuts against the second side.

3. The modular electric seat support and reset structure according to claim 2, characterized in that, The first side is provided with a deformation structure that is recessed on one side and protrudes on the opposite side.

4. The modular electric seat support and reset structure according to claim 1, characterized in that, The irregular connecting rod has a first connecting hole on the inner side of the connection between the main rod and the second extension section, and the first connecting hole is used for the end of the elastic structure to be connected.

5. The modular electric seat support and reset structure according to claim 4, characterized in that, The main rod includes a fifth side and a sixth side connected at right angles. The connecting edge of the fifth side and the sixth side is provided with a reinforcing structure that is recessed on the outside and protruding on the inside. The reinforcing structure is located between the rotation connection point of the third connecting rod and the first connecting hole.

6. The modular electric seat support and reset structure according to claim 4, characterized in that, The second connecting rod is provided with a second connecting hole at the end where it connects to the first connecting rod. The second connecting hole is located inside the rotatable connection point between the second connecting rod and the first connecting rod. The two ends of the elastic structure are fixed through the first connecting hole and the second connecting hole, respectively.

7. The modular electric seat support and reset structure according to claim 6, characterized in that, Two elastic structures are provided, one end of which is connected to the middle of the main rod and the other end is connected to the middle of the first connecting rod.

8. The modular electric seat support and reset structure according to claim 7, characterized in that, The two elastic structures are arranged in parallel.

9. The modular electric seat support and reset structure according to claim 1, characterized in that, The angle between the first extension segment and the main rod is an obtuse angle, and the angle between the second extension segment and the main rod is a right angle.

10. The modular electric seat support and reset structure according to any one of claims 1 to 9, characterized in that, The elastic structure is a spring.

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