An extension pedal structure and an electric seat

Abstract

The utility model relates to electric seat technical field especially, it relates to a kind of extension pedal structure and electric seat, extension pedal structure includes: first connecting rod assembly and the first pedal of first connecting rod assembly one end setting, first connecting rod assembly drives first pedal to overturn or fold;Second connecting rod assembly, second connecting rod assembly is set to the one end of first pedal away from first connecting rod assembly, second connecting rod assembly is provided with second pedal on, and second connecting rod assembly drives second pedal to overturn or fold;Wherein, when second pedal overturns relative to first pedal, second pedal extends to another end, when first pedal and second pedal fold, the plane where first pedal and second pedal are located is opposite vertical. The overall pedal length is significantly increased by the extension of second pedal, the leg support effect of user in lying or half-lying posture is improved, and the ergonomic comfort is improved. In folding state, the overlapping space is reduced when two pedals are stored.

Description

Technical Field

[0001] This utility model relates to the field of electric seat technology, and in particular to an extended pedal structure and an electric seat. Background Technology

[0002] In the field of electric seats and sofa furniture, adjustable footrests have been widely used in the design of electric seats and functional sofas. Most of them achieve the footrest function through pedals and linkage mechanisms. When the footrest is not needed, such as in a sitting position, the power is transmitted to the linkage mechanism through the motor to fold the pedal and retract it. When the footrest is needed, such as in a reclining position, the power is transmitted to the linkage mechanism through the motor to extend the pedal.

[0003] In existing technologies, the storage space is limited due to the need to fold and stow the pedals, and the length of the pedals is also limited, which causes some people to experience discomfort when using the pedals because they are too short.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides an extended pedal structure and an electric seat, thereby effectively solving the problems in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an extended pedal structure, comprising: A first linkage assembly and a first pedal disposed at one end of the first linkage assembly, wherein the first linkage assembly drives the first pedal to flip or fold. A second linkage assembly is disposed at the end of the first pedal away from the first linkage assembly, and a second pedal is disposed on the second linkage assembly. The second linkage assembly drives the second pedal to flip or fold. When the first pedal and the second pedal are flipped, the second pedal extends to the other end relative to the first pedal. When the first pedal and the second pedal are folded, the planes on which the first pedal and the second pedal are located are perpendicular to each other.

[0007] Furthermore, the second link assembly is at least partially connected to the first link assembly in a transmission manner, and when the first link assembly is driven, it drives the second link assembly to perform transmission.

[0008] Further, the first linkage assembly includes: The first double-link mechanism and the second double-link mechanism each include two rotatably connected links. One end of the first double-link mechanism and the second double-link mechanism are respectively rotatably connected to the first pedal; The first double-link mechanism and the second double-link mechanism are arranged crosswise and rotatably connected.

[0009] Furthermore, the second linkage assembly includes: A rotatably connected four-bar linkage, wherein two adjacent links of the four-bar linkage are respectively disposed on the first pedal and the second pedal.

[0010] Furthermore, one of the links in the four-bar linkage of the second linkage assembly is fixedly connected to one of the two-bar linkages on the first linkage assembly.

[0011] Furthermore, one of the double-link mechanisms on the first linkage assembly extends away from the first linkage assembly at the rotatable connection with the first pedal, and serves as one of the links in the four-link mechanism of the second linkage assembly.

[0012] Furthermore, the link in the second linkage assembly that is connected to the second pedal and the link that is fixedly connected to the first linkage assembly are located on opposite sides of the four-bar linkage mechanism.

[0013] This utility model also includes an electric seat, which includes the extended pedal structure as described above.

[0014] The beneficial effects of this utility model are as follows: The extended pedal structure, through the segmented flipping linkage of the first and second pedals, achieves a longer footrest support surface within the limited space at the bottom of the seat. The first linkage assembly drives the first pedal to complete the basic flipping, providing the main support for load-bearing; the second linkage assembly is located at the far end of the first pedal, allowing the second pedal to extend further outward after the first pedal is unfolded, thus forming a continuous and flat footrest surface. Compared with the traditional pedal structure that can only be folded in one segment, the extension of the second pedal significantly increases the overall pedal length, improving the leg support effect for users in a lying or semi-reclining posture, and enhancing ergonomic comfort. In the folded state, the second pedal flips around its linkage to a compact position relatively perpendicular to the first pedal, reducing the overlap space between the two pedals when stored, and avoiding the pedals occupying the effective space inside the electric seat or sofa due to excessive length, thus breaking through the technical bottleneck of traditional pedals whose length cannot be increased due to limited storage depth. The entire mechanism does not require the use of long slide rails or complex telescopic mechanisms, has a simple structure, stable and reliable operation, low manufacturing cost, and reduces wear and noise, further improving product durability and service life. Attached Figure Description

[0015] 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.

[0016] Figure 1 A schematic diagram of the structure for the extension pedal flipping; Figure 2 A schematic diagram of the structure for extending the pedals and folding them; Figure 3 This is a structural schematic diagram of the first linkage assembly and the first pedal. Figure 4 This is a schematic diagram of the second linkage assembly and the second pedal. Detailed Implementation

[0017] 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.

[0018] like Figures 1 to 4 As shown: An extended pedal structure, comprising: The first linkage assembly 11 and the first pedal 12 provided at one end of the first linkage assembly 11, the first linkage assembly 11 drives the first pedal 12 to flip or fold. The second link assembly 21 is located at the end of the first pedal 12 away from the first link assembly 11. The second link assembly 21 is provided with a second pedal 22. The second link assembly 21 drives the second pedal 22 to flip or fold. When the first pedal 12 and the second pedal 22 are flipped, the second pedal 22 extends to the other end relative to the first pedal 12. When the first pedal 12 and the second pedal 22 are folded, the planes on which the first pedal 12 and the second pedal 22 are located are perpendicular to each other.

[0019] The extended pedal structure achieves a longer footrest support surface within the limited space under the seat through the segmented flipping linkage of the first pedal 12 and the second pedal 22. The first linkage assembly 11 drives the first pedal 12 to complete the basic flipping, providing the main support for load-bearing; the second linkage assembly 21 is located at the far end of the first pedal 12, allowing the second pedal 22 to extend further outward after the first pedal 12 is unfolded, thus forming a continuous and flat footrest surface. Compared with the traditional pedal structure that can only be folded in one segment, the extension of the second pedal 22 significantly increases the overall pedal length, improving the leg support effect for users in a reclining or semi-reclining posture and enhancing ergonomic comfort. In the folded state, the second pedal 22 flips around its linkage to a compact position relatively perpendicular to the first pedal 12, reducing the overlap space between the two pedals when stored, and avoiding the pedals occupying the effective space inside the electric seat or sofa due to excessive length, thus breaking through the technical bottleneck of traditional pedals whose length cannot be increased due to limited storage depth. The entire mechanism does not require long slide rails or complex telescopic mechanisms. It has a simple structure, stable and reliable operation, and low manufacturing cost. At the same time, it reduces wear and noise, further improving product durability and service life.

[0020] In this embodiment, the second link assembly 21 is at least partially connected to the first link assembly 11 in a transmission manner. When the first link assembly 11 is driven, it drives the second link assembly 21 to perform transmission.

[0021] Based on the above embodiments, by at least partially connecting the second linkage assembly 21 to the first linkage assembly 11, the first linkage assembly 11 can synchronously drive the second linkage assembly 21 to complete the corresponding flipping action when it is driven to flip, thereby realizing the automatic linkage unfolding and folding of the two pedals. This eliminates the need for a separate drive source for the second pedal 22, reducing the number of components such as motors and transmission mechanisms, resulting in a simpler and more compact overall structure and significantly lower manufacturing and assembly costs. Simultaneously, the linkage transmission between the two linkage assemblies ensures consistent movement rhythm between the first pedal 12 and the second pedal 22, ensuring that the second pedal 22 always automatically unfolds or folds after the first pedal 12 reaches the designated position, preventing interference, misalignment, or jamming between the pedals, thus improving the reliability and smoothness of the mechanism.

[0022] like Figure 3 As shown, the first link assembly 11 includes: The first double-link mechanism 111 and the second double-link mechanism 112 each include two rotatably connected links; One end of the first double linkage mechanism 111 and the second double linkage mechanism 112 are respectively rotatably connected to the first pedal 12; The first double-link mechanism 111 and the second double-link mechanism 112 are arranged crosswise and rotatably connected.

[0023] By employing a cross-link structure consisting of a first double-link mechanism 111 and a second double-link mechanism 112 in the first link assembly 11, each double-link mechanism includes two links rotatably connected to each other, and the ends of the two double-link mechanisms are rotatably connected to the first pedal 12, the first pedal 12 is characterized by being constrained and supported by both paths during the flipping process. This cross-link structure can form a more stable parallel four-bar support effect, enabling the first pedal 12 to maintain good posture control during unfolding and folding, without tilting, swaying, or deflecting, thereby improving the stability and smoothness of the pedal action.

[0024] like Figure 4 As shown, the second link assembly 21 includes: A four-bar linkage 211 is rotatably connected, with two adjacent links of the four-bar linkage 211 respectively disposed on the first pedal 12 and the second pedal 22.

[0025] A four-bar linkage 211, consisting of multiple rotatably connected links, is used as the second linkage assembly 21. Two adjacent links in the four-bar linkage 211 are respectively positioned on the first pedal 12 and the second pedal 22, allowing the second pedal 22 to rotate relative to the first pedal 12 under a controlled motion trajectory. Utilizing the geometric constraints of the four-bar linkage 211, the rotation path of the second pedal 22 can be precisely defined, enabling it to smoothly rotate forward after the first pedal 12 is extended to its working position, and to fold back along a predetermined reverse trajectory and fit into a vertical angle when the pedal is folded and stored.

[0026] As a preferred embodiment of the above, one of the links in the four-bar linkage 211 of the second linkage assembly 21 is fixedly connected to one of the two-bar linkages on the first linkage assembly 11.

[0027] One of the double-link mechanisms on the first link assembly 11 extends away from the first link assembly 11 at the rotatable connection with the first pedal 12, and serves as one of the links in the four-link mechanism 211 of the second link assembly 21.

[0028] By fixing one link in the four-bar linkage 211 of the second linkage assembly 21 to a two-bar linkage in the first linkage assembly 11, and extending the two-bar linkage away from the first linkage assembly 11 at its rotational connection position with the first pedal 12, this preferred solution achieves a structurally integrated design between the first linkage assembly 11 and the second linkage assembly 21. This link-sharing method not only reduces the number of independent components in the second linkage assembly 21, making the overall structure more compact and lightweight, and reducing manufacturing and assembly costs, but also enables the direct and reliable transmission of the movement of the first pedal 12 to the second pedal 22, creating a natural mechanical linkage between the flipping actions of the two pedals without the need for additional transmission rods or synchronization mechanisms, thus improving the overall stability and synchronization of the system. Through the geometric constraints formed by the shared links, the unfolding trajectory of the second pedal 22 automatically matches the flipping posture of the first pedal 12, avoiding interference between the pedals during the unfolding process.

[0029] Among them, the connecting rod in the second link assembly 21 that is connected to the second pedal 22 and the connecting rod that is fixedly connected to the first link assembly 11 are located on opposite sides of the four-bar linkage 211.

[0030] The connecting rods in the second linkage assembly 21 that connect to the second pedal 22 are arranged on opposite sides of the four-bar linkage 211, as well as the connecting rods fixedly connected to the first linkage assembly 11. This creates a more mechanically balanced and symmetrical force-bearing structure for the four-bar linkage 211. This opposing arrangement results in a more rational force path for the second pedal 22 during the flipping process, significantly reducing swaying, deflection, or link fatigue caused by unilateral force application, thereby improving the stability and durability of the entire mechanism during unfolding and folding.

[0031] This embodiment also includes an electric seat, including the extended pedal structure as described above.

[0032] Compared to traditional pedal structures that can only fold in one section, the extension of the second pedal 22 significantly increases the overall pedal length, improving leg support for users in reclining or semi-reclining positions and enhancing ergonomic comfort. In the folded state, the second pedal 22 flips around its connecting rod to a compact position relatively perpendicular to the first pedal 12, reducing overlap when the two pedals are stored. This prevents the pedals from occupying valuable space inside the electric seat or sofa due to excessive length, thus overcoming the technical bottleneck of traditional pedals whose length cannot be increased due to limited storage depth.

[0033] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An extended pedal structure, characterized in that, include: A first linkage assembly and a first pedal disposed at one end of the first linkage assembly, wherein the first linkage assembly drives the first pedal to flip or fold. A second linkage assembly is disposed at the end of the first pedal away from the first linkage assembly, and a second pedal is disposed on the second linkage assembly. The second linkage assembly drives the second pedal to flip or fold. When the first pedal and the second pedal are flipped, the second pedal extends to the other end relative to the first pedal. When the first pedal and the second pedal are folded, the planes on which the first pedal and the second pedal are located are perpendicular to each other.

2. The extended pedal structure according to claim 1, characterized in that, The second link assembly is at least partially connected to the first link assembly in a transmission manner. When the first link assembly is driven, it drives the second link assembly to perform transmission.

3. The extended pedal structure according to claim 2, characterized in that, The first link assembly includes: The first double-link mechanism and the second double-link mechanism each include two rotatably connected links. One end of the first double-link mechanism and the second double-link mechanism are respectively rotatably connected to the first pedal; The first double-link mechanism and the second double-link mechanism are arranged crosswise and rotatably connected.

4. The extended pedal structure according to claim 3, characterized in that, The second link assembly includes: A rotatably connected four-bar linkage, wherein two adjacent links of the four-bar linkage are respectively disposed on the first pedal and the second pedal.

5. The extended pedal structure according to claim 4, characterized in that, One of the links in the four-bar linkage of the second linkage assembly is fixedly connected to one of the two-bar linkages on the first linkage assembly.

6. The extended pedal structure according to claim 5, characterized in that, One of the double-link mechanisms on the first linkage assembly extends away from the first linkage assembly at the rotatable connection with the first pedal, and serves as one of the links in the four-link mechanism of the second linkage assembly.

7. The extended pedal structure according to claim 5, characterized in that, The link in the second linkage assembly that is connected to the second pedal and the link that is fixedly connected to the first linkage assembly are located on opposite sides of the four-bar linkage mechanism.

8. An electric seat, characterized in that, Includes the extended pedal structure as described in any one of claims 1 to 7.

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