Saddle cushion turnover hinge structure, storage seat and electric vehicle
By combining the design of long and short rockers with elastic elements, the hinge structure of the tricycle can be stably rotated, solving the problems of poor stability and exposure of existing hinge structures, and improving the overall aesthetics and ease of operation.
Patent Information
- Application Number
- CN202522330064.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-11-03
AI Technical Summary
The existing hinge structure of tricycles has poor stability, the exposed hinge shaft affects the appearance, and the hinge-type hinge is easily damaged, especially when it is open, it is necessary to hold it by hand to maintain stability.
The seat uses a combination of long and short rocker arms that are hinged to the frame mounting base at intervals. The swing ends of the long and short rocker arms are also hinged at intervals. Combined with the elastic element design, this enables the seat fixing link to self-guide and flip, enhancing the stability and self-locking capability of the hinge structure.
The hinge structure has been improved in terms of stability and ease of operation, preventing the seat cushion from flipping out of the storage compartment area, enhancing the overall structural compactness and aesthetics, and reducing the risk of movement interference and jamming.
Smart Images
Figure CN224676265U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric vehicle technology, and in particular to a seat cushion flip hinge structure, a storage seat, and an electric vehicle. Background Technology
[0002] With the increasing use of tricycles in daily travel, the market has placed higher demands on their passenger and cargo carrying capabilities. Currently, the main storage space in tricycles is concentrated in the storage box under the rear seat, with the lid using a seat cushion structure, and the two connected by hinges. However, the existing hinge structure has the following significant drawbacks: the exposed hinge shaft damages the flatness of the storage box and seat cushion surfaces, affecting the overall aesthetics; the hinge-type hinge has poor stability and is easily damaged, especially when open, requiring the user to hold the seat cushion to maintain its position. Utility Model Content
[0003] The purpose of this utility model is to provide a vehicle seat cushion flip hinge structure, a storage seat, and an electric vehicle to alleviate the technical problem of poor stability of the hinge structure in the prior art.
[0004] In the first aspect, the vehicle seat cushion flip hinge structure provided by this utility model includes: a frame fixing seat, a long rocker arm, a short rocker arm, and a seat cushion fixing link; The mounting ends of the long rocker arm and the short rocker arm are spaced apart and are respectively hinged to the frame mounting base; The swing ends of the long rocker arm and the short rocker arm are spaced apart and are respectively hinged to the seat cushion fixing rod; The distance between the mounting end of the long rocker and the mounting end of the short rocker is greater than the distance between the swing end of the long rocker and the swing end of the short rocker.
[0005] In conjunction with the first aspect, this utility model provides a first possible implementation of the first aspect, wherein an elastic element is connected between the frame fixing seat and the seat fixing link.
[0006] In conjunction with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the vehicle seat cushion flip hinge structure has a closed state and an open state; In the closed state, the elastic element drives the seat fixing link to approach the frame mounting base, and the seat fixing link and the frame mounting base become nearly parallel. In the open state, the elastic element has a tendency to drive the seat fixing link to flip away from the frame fixing seat, supported by the swing end of the short rocker arm.
[0007] In conjunction with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein, in the open state, the swing end of the short rocker arm abuts against the long rocker arm.
[0008] In conjunction with the second possible implementation of the first aspect, this utility model provides a fourth possible implementation of the first aspect, wherein the mounting end of the long rocker arm is hinged to the frame mounting base via a first hinge axis, and the mounting end of the short rocker arm is hinged to the frame mounting base via a second hinge axis. The swing end of the long rocker arm is hinged to the seat cushion fixing link via a third hinge axis, and the swing end of the short rocker arm is hinged to the seat cushion fixing link via a fourth hinge axis.
[0009] In conjunction with the fourth possible implementation of the first aspect, this utility model provides a fifth possible implementation of the first aspect, wherein when both the frame fixing seat and the seat fixing link extend in the horizontal direction, the position of the first hinge axis is higher than the position of the second hinge axis, and the position of the third hinge axis is higher than the position of the fourth hinge axis.
[0010] In conjunction with the fifth possible implementation of the first aspect, this utility model provides a sixth possible implementation of the first aspect, wherein the frame fixing seat is provided with a first mounting post and the seat fixing link is provided with a second mounting post; The elastic element includes a tension spring, one end of which is connected to the first mounting post, and the other end of which is connected to the second mounting post.
[0011] In conjunction with the sixth possible implementation of the first aspect, this utility model provides a seventh possible implementation of the first aspect, wherein the fourth hinge axis is located between the second mounting post and the third hinge axis in the extending direction of the seat cushion fixing link.
[0012] Secondly, the storage seat provided by this utility model includes: a storage box, a seat cushion, and the vehicle seat cushion flip hinge structure described in the first aspect. The frame mounting base is connected to the inner wall of the storage box, the seat cushion is connected to the seat cushion fixing rod, and the seat cushion can be opened and closed to cover the opening of the storage box.
[0013] Thirdly, the electric vehicle provided by this utility model is equipped with the seat cushion flip hinge structure described in the first aspect.
[0014] The present invention provides the following advantages: The mounting ends of a long rocker arm and a short rocker arm are spaced apart and hinged to the frame mounting base. The swing ends of the long and short rockers are also spaced apart and hinged to the seat fixing link. The distance between the mounting ends of the long and short rockers is greater than the distance between the swing ends of the long and short rockers. The swinging of the long and short rockers relative to the frame mounting base enables the seat fixing link to flip. The joint support of the long and short rockers improves the stability of the hinge structure. The seat fixing link can flip upwards from the top of the frame mounting base from the closed state to the open state. This is particularly suitable for connecting storage boxes and seats that cover the storage boxes, allowing the seat to flip open from front to back without exceeding the storage box mounting area. This not only facilitates the retrieval of items but also improves the structural compactness.
[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 Schematic diagram of the car seat cushion flip hinge structure provided in this embodiment of the utility model Figure 1 ; Figure 2 Schematic diagram of the car seat cushion flip hinge structure provided in this embodiment of the utility model Figure 2 ; Figure 3 A cross-sectional view of the storage seat provided in an embodiment of this utility model.
[0018] Icons: 100 - Frame mounting bracket; 101 - First mounting post; 200 - Long joystick; 201 - First hinge axis; 202 - Third hinge axis; 300 - Short joystick; 301 - Second hinge axis; 302 - Fourth hinge axis; 400 - Seat cushion fixing link; 401 - Second mounting post; 500 - Elastic element; 600 - Storage box; 700 - Seat cushion. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the vehicle seat cushion flip hinge structure provided in this embodiment of the utility model includes: a frame fixing seat 100, a long rocker arm 200, a short rocker arm 300, and a seat cushion fixing link 400; the mounting ends of the long rocker arm 200 and the short rocker arm 300 are spaced apart and respectively hinged to the frame fixing seat 100; the swing ends of the long rocker arm 200 and the swing ends of the short rocker arm 300 are spaced apart and respectively hinged to the seat cushion fixing link 400; the distance between the mounting ends of the long rocker arm 200 and the short rocker arm 300 is greater than the distance between the swing ends of the long rocker arm 200 and the short rocker arm 300.
[0023] Specifically, the frame mounting base 100 is fixedly connected to the top edge area of the storage box 600, for example, by screws or welding, to securely mount it to the vehicle body structure; the seat fixing link 400 is fixedly connected to the bottom support frame of the seat 700 to drive the overall movement of the seat 700. The long rocker arm 200 and the short rocker arm 300 are supported together between the frame mounting base 100 and the seat fixing link 400, improving the stability of the hinge structure. The long rocker arm 200 is longer than the short rocker arm 300, and each has a mounting end and a swing end, forming a pair of asymmetrically arranged link assemblies. The long rocker arm 200 and the short rocker arm 300 can swing relative to the frame mounting base 100, with their swing axes parallel to each other. The difference in length between the long rocker arm 200 and the short rocker arm 300 creates a swing angle difference, which causes the seat fixing link 400 to flip, thereby realizing the opening and closing action of the seat 700 relative to the storage box 600. In the closed state, the seat fixing link 400 flips over to the top of the frame fixing seat 100, and the seat fixing link 400 and the frame fixing seat 100 are nearly parallel; in the open state, the seat fixing link 400 flips away from the frame fixing seat 100, and the angle between the seat fixing link 400 and the frame fixing seat 100 increases, and the seat 700 moves away from the opening of the storage box 600 to facilitate the retrieval and placement of items.
[0024] Specifically, the distance L1 between the mounting end of the long rocker arm 200 and the mounting end of the short rocker arm 300 is greater than the distance L2 between the connection points of their swing ends on the seat fixing link 400 (i.e., L1>L2). During the opening action, the seat fixing link 400 is caused to rotate upward and backward with the front end as the fulcrum, rather than moving horizontally or tilting forward as a whole, which is beneficial for controlling the opening angle and space occupation.
[0025] Crucially, throughout the entire opening process, the vertical projection of the seat 700 always falls within the opening contour of the storage box 600, never exceeding its original installation boundary. This design effectively avoids the seat obstructing the storage box opening after opening, while simultaneously improving the overall vehicle's compactness and safety, making it particularly suitable for small electric motorcycles or shared electric vehicles with a front-to-rear flip-open design. Due to the length difference between the long rocker arm 200 and the short rocker arm 300, they produce different displacement responses under the same angular velocity input, creating a natural angle difference that assists in achieving a smooth and self-guided flipping motion. This structure not only enhances the mechanical stability of the hinge system but also reduces the risk of motion interference and jamming.
[0026] In this embodiment of the utility model, an elastic element 500 is connected between the frame fixing seat 100 and the seat fixing link 400. The elastic element 500 is preferably a torsion spring or a tension spring, which can be used to keep the seat fixing link 400 stacked in the direction close to the frame fixing seat 100, thereby keeping the seat 700 in the state of covering the storage box 600; the elastic force of the elastic element 500 can also be used to limit the four-bar linkage composed of the frame fixing seat 100, the long rocker arm 200, the short rocker arm 300 and the seat fixing link 400 to the dead point, thereby keeping the seat 700 in the open state or the closed state. In the initial closed state, when the user applies pressure, the seat cushion 700 is pressed against the storage box 600. At this time, the elastic element 500 pulls the seat cushion fixing link 400 to keep the seat cushion 700 in the closed state. When the user lifts the seat cushion 700 to overcome the elastic force of the elastic element 500 and flips it up, the elastic element 500 is loaded and then releases the elastic force again, which can keep the seat cushion 700 in the open state.
[0027] It should be noted that the long joystick 200 and the short joystick 300 have different lengths, resulting in different angular displacement responses under the same angular velocity input. This creates a natural angle difference, driving the seat cushion fixing link 400 to complete a self-guided, smooth flipping motion. This difference also enhances the mechanism's mechanical self-locking capability, reduces the probability of motion jamming, and improves the operating feel.
[0028] In this embodiment, the seat cushion flip hinge structure has a closed state and an open state. In the closed state, the elastic element 500 drives the seat cushion fixing link 400 to approach the frame fixing seat 100, and the seat cushion fixing link 400 and the frame fixing seat 100 are nearly parallel (angle less than 10°), achieving a low-height fit and sealing, ensuring a neat appearance and flush with the vehicle body. In the open state, the elastic element 500 has a tendency to drive the seat cushion fixing link 400 to flip away from the frame fixing seat 100 with the swing end of the short rocker arm 300 as support, and the seat cushion 700 flips upward and backward until the maximum opening angle is reached (preferably 60° to 90°).
[0029] In an optional embodiment, in the open state, the swing end of the short rocker 300 abuts against the long rocker 200. Under the elastic force of the elastic element 500, the seat cushion fixing link 400 tends to flip upward, thereby causing the swing end of the short rocker 300 to press against the long rocker 200, thus achieving the opening limit, thereby keeping the seat cushion fixing link 400 and the seat cushion 700 at the maximum opening angle.
[0030] Furthermore, the mounting end of the long rocker arm 200 is hinged to the frame mounting base 100 via a first hinge shaft 201, and the mounting end of the short rocker arm 300 is hinged to the frame mounting base 100 via a second hinge shaft 301; the swinging end of the long rocker arm 200 is hinged to the seat fixing link 400 via a third hinge shaft 202, and the swinging end of the short rocker arm 300 is hinged to the seat fixing link 400 via a fourth hinge shaft 302. The first hinge shaft 201, second hinge shaft 301, third hinge shaft 202, and fourth hinge shaft 302 are arranged in parallel.
[0031] It should be noted that when both the frame mounting base 100 and the seat fixing link 400 extend horizontally, the position of the first hinge shaft 201 is higher than the position of the second hinge shaft 301, and the position of the third hinge shaft 202 is higher than the position of the fourth hinge shaft 302. This not only avoids interference between the long rocker arm 200 and the short rocker arm 300, but also allows the long rocker arm 200 to be stacked on top of the short rocker arm 300 in the closed state, achieving compact storage, reducing the overall thickness, which is beneficial for lowering the vehicle height and improving sealing performance.
[0032] In a preferred embodiment, the frame mounting base 100 is provided with a first mounting post 101, and the seat fixing link 400 is provided with a second mounting post 401; the elastic element 500 includes a tension spring, one end of which is connected to the first mounting post 101, and the other end of which is connected to the second mounting post 401. The two ends of the tension spring are respectively provided with hook-like structures or ring-like structures to hook or sleeve the first mounting post 101 and the second mounting post 401.
[0033] In the extension direction of the seat fixing link 400, the fourth hinge shaft 302 is located between the second mounting post 401 and the third hinge shaft 202. In the closed state, the spring force can pull the seat fixing link 400 towards the frame mounting seat 100, thereby making the seat 700 connected to the seat fixing link 400 stably cover the storage box 600. In the open state, the spring force has the tendency to make the seat fixing link 400 swing backward with the swing end of the short rocker arm 300 as support. The long rocker arm 200 pulls the seat fixing link 400, and the swing end of the short rocker arm 300 abuts against the long rocker arm 200, thereby limiting the seat fixing link 400 to the maximum opening angle. At this time, the seat 700 connected to the seat fixing link 400 is maintained at the maximum opening angle.
[0034] like Figure 3As shown, the storage seat provided in this embodiment of the present invention includes: a storage box 600, a seat cushion 700, and the seat cushion flipping hinge structure described in the above embodiment; the frame fixing seat 100 is connected to the inner wall of the storage box 600, the seat cushion 700 is connected to the seat cushion fixing link 400, and the seat cushion 700 can be opened and closed to cover the opening of the storage box 600. The seat cushion fixing link 400 is fixedly connected to the support frame at the bottom of the seat cushion 700 to drive the seat cushion 700 to move synchronously as a whole. In some embodiments, two seat cushion flipping hinge structures can be configured to jointly support the seat cushion 700, and the two seat cushion fixing links 400 are respectively connected to the two sides of the bottom edge of the seat cushion 700 to improve stability during the flipping process. In addition, with the seat fixing link 400 connected to the bottom surface of the seat 700 and the frame fixing seat 100 connected to the inner wall of the storage box 600, the first hinge shaft 201, the second hinge shaft 301, the third hinge shaft 202 and the fourth hinge shaft 302 will not be exposed, ensuring the flatness of the storage box 600 and the seat 700.
[0035] The electric vehicle provided in this embodiment of the utility model is equipped with the seat cushion flipping hinge structure described in the above embodiments. The electric vehicle can be configured as a two-wheeled electric vehicle, a three-wheeled electric vehicle, etc., and has the technical effects of the above-mentioned seat cushion flipping hinge structure, which will not be repeated here.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A car seat cushion flip hinge structure, characterized in that, include: The frame mounting bracket (100), the long rocker arm (200), the short rocker arm (300), and the seat fixing link (400). The mounting ends of the long rocker arm (200) and the short rocker arm (300) are spaced apart and are respectively hinged to the frame mounting base (100); The swing ends of the long rocker arm (200) and the short rocker arm (300) are spaced apart and are respectively hinged to the seat cushion fixing link (400); The distance between the mounting end of the long rocker (200) and the mounting end of the short rocker (300) is greater than the distance between the swing end of the long rocker (200) and the swing end of the short rocker (300).
2. The vehicle seat cushion flip hinge structure according to claim 1, characterized in that, An elastic element (500) is connected between the frame fixing seat (100) and the seat fixing link (400).
3. The vehicle seat cushion flip hinge structure according to claim 2, characterized in that, The vehicle seat cushion flip hinge structure has a closed state and an open state; In the closed state, the elastic element (500) drives the seat fixing link (400) to approach the frame fixing seat (100), and the seat fixing link (400) and the frame fixing seat (100) approach parallel. In the open state, the elastic element (500) has a tendency to drive the seat fixing link (400) to flip away from the frame fixing seat (100) with the swing end of the short rocker arm (300) as support.
4. The vehicle seat cushion flip hinge structure according to claim 3, characterized in that, In the open state, the swing end of the short rocker (300) abuts against the long rocker (200).
5. The vehicle seat cushion flip hinge structure according to claim 3, characterized in that, The mounting end of the long rocker arm (200) is hinged to the frame mounting base (100) via a first hinge shaft (201), and the mounting end of the short rocker arm (300) is hinged to the frame mounting base (100) via a second hinge shaft (301). The swing end of the long rocker arm (200) is hinged to the seat cushion fixing link (400) via a third hinge shaft (202), and the swing end of the short rocker arm (300) is hinged to the seat cushion fixing link (400) via a fourth hinge shaft (302).
6. The vehicle seat cushion flip hinge structure according to claim 5, characterized in that, When both the frame mounting base (100) and the seat fixing link (400) extend in the horizontal direction, the position of the first hinge axis (201) is higher than the position of the second hinge axis (301), and the position of the third hinge axis (202) is higher than the position of the fourth hinge axis (302).
7. The vehicle seat cushion flip hinge structure according to claim 6, characterized in that, The frame mounting base (100) is provided with a first mounting post (101), and the seat fixing link (400) is provided with a second mounting post (401). The elastic element (500) includes a tension spring, one end of which is connected to the first mounting post (101) and the other end of which is connected to the second mounting post (401).
8. The vehicle seat cushion flip hinge structure according to claim 7, characterized in that, The fourth hinge shaft (302) is located between the second mounting post (401) and the third hinge shaft (202) in the extending direction of the seat fixing link (400).
9. A storage base, characterized in that, include: Storage compartment (600), seat cushion (700), and the seat cushion flip hinge structure according to any one of claims 1-8; The frame mounting base (100) is connected to the inner wall of the storage box (600), the seat cushion (700) is connected to the seat cushion fixing rod (400), and the seat cushion (700) can be opened and closed to cover the opening of the storage box (600).
10. An electric vehicle, characterized in that, The electric vehicle is equipped with the seat cushion flip hinge structure as described in any one of claims 1-8.