Novel seat cushion folding mechanism

Abstract

The utility model discloses a novel seat cushion folding mechanism which is used on a co-driver seat of a commercial vehicle, the co-driver seat of the commercial vehicle comprises a base, a backrest is fixed on the base through a connecting plate, a rotatable seat cushion is arranged on the inner side of the connecting plate, and the seat cushion folding mechanism is arranged between the seat cushion and the base. Therefore, the seat cushion can be folded; the seat cushion folding mechanism comprises rotating plates arranged on the inner sides of connecting plates, the connecting plates and the rotating plates are rotationally connected through rotating shafts and shaft sleeves, the seat cushion is fixed between the two rotating plates, and the rotating plates can rotate with the rotating shafts as rotating shafts; the seat cushion folding mechanism further comprises two special-shaped springs arranged on the inner side of the base, one end of each special-shaped spring is fixed to the base, and the other end of each special-shaped spring is fixed to the rotating plate. The passenger seat has the advantage that the convenience of getting off the passenger seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a novel seat cushion folding mechanism. Background Art

[0002] In the design of commercial vehicle passenger seats, traditional seats often have the following shortcomings:

[0003] On the one hand, the use of the space inside the car is not reasonable enough. While meeting the riding function, it is impossible to effectively use the space under the seats or reduce the impact of the seats on the passability of the cab when there is no need to ride.

[0004] On the other hand, there is room for improvement in terms of riding convenience and comfort. For example, the seat cannot automatically adjust to a state that is convenient for next use after use, which causes inconvenience to the co-driver when getting on and off the vehicle.

[0005] In addition, the structural stability and safety of the seats also need to be further optimized. Some seats may deform when bearing the weight of the human body, and lack effective limiting mechanisms to ensure the safety of passengers during use. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a novel seat cushion folding mechanism, which fixes the seat cushion mechanism through a special-shaped spring, thereby realizing the folding function of the passenger seat cushion of a commercial vehicle, and at the same time improving the passability of the commercial vehicle cab and providing more storage space for the driver.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A novel seat cushion folding mechanism is used on a passenger seat of a commercial vehicle. The passenger seat of the commercial vehicle includes a base, a backrest is fixed to the base via a connecting plate, a rotatable seat cushion is provided on the inner side of the connecting plate, and the seat cushion folding mechanism is provided between the seat cushion and the base to facilitate folding of the seat cushion.

[0009] The seat cushion folding mechanism includes a rotating plate arranged on the inner side of the connecting plate. The connecting plate and the rotating plate are rotatably connected through a rotating shaft and a shaft sleeve. The seat cushion is fixed between the two rotating plates. The rotating plate can rotate around the rotating shaft.

[0010] In one or more embodiments of the present invention, the seat cushion folding mechanism further includes two special-shaped springs arranged on the inner side of the base, one end of the special-shaped spring is fixed to the base, and the other end thereof is fixed to the rotating plate.

[0011] In one or more embodiments of the present invention, a first spring bushing is fixed on the inner side of the base, a second spring bushing is fixed on the outer side of the rotating plate, and both ends of the special-shaped spring are respectively clamped on the first spring bushing and the second spring bushing.

[0012] In one or more embodiments of the present invention, a cross bar is further fixed in the base, and the middle portion of the special-shaped spring abuts against the inner side of the cross bar.

[0013] In one or more embodiments of the present invention, the seat cushion includes a seat cushion frame and a covering layer sleeved on the outer surface of the seat cushion frame, and the seat cushion frame is fixed between the two rotating plates; the seat cushion frame includes two parallel rotating rods, and the rotating rods are respectively fixed on the inner side of the rotating plates, and a fixing rod is fixed between the two rotating rods.

[0014] In one or more embodiments of the present invention, a stop shaft is fixed between the two connecting plates, and the bent portion of the rear end of the rotating plate is obliquely arranged at the rear end of the rotating rod; when the seat cushion is in a sitting state, the bent portion of the rotating plate abuts against the surface of the stop shaft.

[0015] Beneficial effects of the utility model:

[0016] 1. When the seat cushion is in the vertical state after folding, it effectively improves the passability of the commercial vehicle cab, reduces the space occupied by the seat, makes the internal space of the cab more open, and facilitates the activities of people in the vehicle; when the seat cushion is in a flat state, the cavity inside the base can be used as storage space, making full use of the originally idle space under the seat, increasing the storage function of the commercial vehicle, and making it convenient to store items.

[0017] 2. When the co-pilot takes his seat, the seat cushion can be rotated to a flat state through the rotating shaft on the seat cushion, providing a suitable support surface for riding, conforming to ergonomics, meeting riding needs, and operating naturally and smoothly; when the co-pilot leaves the seat cushion, the seat cushion frame automatically rotates counterclockwise under the spring force of the special-shaped spring and returns to a state that is convenient for next use, greatly improving the convenience of the co-pilot getting off the vehicle, without the need to manually adjust the seat cushion position.

[0018] 3. When the seat cushion is in the riding state, the stop shaft and the bent part of the rotating plate produce hard contact, which effectively limits the rotation range of the rotating plate. Even if large pressure or shaking is generated due to human body movements during riding, the rotating plate can be prevented from excessive rotation, thereby ensuring the safety of the co-pilot and avoiding safety accidents such as the passenger losing balance and falling due to abnormal rotation of the seat cushion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure after removing the backrest;

[0021] Figure 3 yes Figure 2 Front view of

[0022] Figure 4 It is a structural diagram when the rotating plate contacts the crossbar. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In this embodiment, Figures 1 to 4 As shown, a new type of seat cushion folding mechanism is used on the passenger seat of a commercial vehicle. The passenger seat of the commercial vehicle includes a base 1, a backrest 3 is fixed to the base 1 through a connecting plate 2, a rotatable seat cushion is provided on the inner side of the connecting plate 2, and the seat cushion folding mechanism is provided between the seat cushion and the base 1 so that the seat cushion can be folded.

[0025] The seat cushion folding mechanism includes a rotating plate 5 arranged on the inner side of the connecting plate 2. The connecting plate 2 and the rotating plate 5 are rotatably connected through a rotating shaft 4 and a sleeve. The seat cushion is fixed between the two rotating plates 5. The rotating plate 5 can rotate with the rotating shaft 4 as the axis.

[0026] The seat cushion folding mechanism is used to provide elastic force to the seat cushion so that the seat cushion is initially folded. When an external force drives the seat cushion to flip to a certain angle, the passenger can sit on it, so that the seat cushion always remains in the current state. The use of the rotating shaft 4 and the shaft sleeve allows the rotating plate 5 to rotate after being fixed.

[0027] In this embodiment, the interior of the base 1 is in a hollow state, so that the seat cushion will not be disturbed during the flipping process; when the seat cushion is in a flat state, the base 1 can also provide storage space; when the seat cushion is in a folded vertical state, the passability of the commercial vehicle cab is improved.

[0028] In one or more embodiments of the present invention, the seat cushion folding mechanism further includes two special-shaped springs 6 arranged on the inner side of the base 1 , one end of the special-shaped spring 6 is fixed to the base 1 , and the other end thereof is fixed to the rotating plate 5 .

[0029] In this embodiment, the special-shaped spring 6 is provided to always provide a pulling force to the rotating plate 5, and this pulling force causes the rotating plate 5 to rotate around the rotating axis 4, so that when the seat cushion is not subjected to external force, it is flipped to a folded state by the pulling force of the special-shaped spring 6. When the seat cushion is subjected to a pressure greater than the pulling force of the special-shaped spring 6, the seat cushion rotates in the opposite direction.

[0030] In one or more embodiments of the present invention, a first spring bushing 7 is fixed on the inner side of the base 1, a second spring bushing is fixed on the outer side of the rotating plate 5, and the two ends of the special-shaped spring 6 are respectively clamped on the first spring bushing 7 and the second spring bushing.

[0031] In this embodiment, the arrangement of the first spring bushing 7 and the second spring bushing provides a stable mounting position for the special-shaped spring 6. The special-shaped spring 6 can be precisely clamped onto the first spring bushing 7 and the second spring bushing, ensuring that the special-shaped spring 6 does not shift during operation. During the expansion and contraction process of the special-shaped spring 6, friction will be generated between its ends and the contact parts. The first spring bushing 7 and the second spring bushing can act as a buffer layer to reduce this friction. The spring bushing can help the special-shaped spring 6 better adapt to deformation. During the expansion and contraction process of the special-shaped spring 6, the stress conditions at its ends are relatively complex. The spring bushing can make the stress distribution more uniform.

[0032] In one or more embodiments of the present invention, a cross bar 8 is further fixed in the base 1 , and the middle portion of the special-shaped spring 6 abuts against the inner side of the cross bar 8 .

[0033] In this embodiment, the cross bar 8 is used to block the main part of the special-shaped spring 6 so that the main body will not move at will during the stretching process of the special-shaped spring 6; and when the seat cushion is rotated to the folded state, it can also be limited by the cross bar 8.

[0034] In one or more embodiments of the present invention, the seat cushion includes a seat cushion frame 9 and a covering layer sleeved on the outer surface of the seat cushion frame 9, and the seat cushion frame 9 is fixed between the two rotating plates 5; the seat cushion frame 9 includes two parallel rotating rods, which are respectively fixed on the inner side of the rotating plate 5, and a fixing rod 11 is fixed between the two rotating rods.

[0035] In this embodiment, the seat cushion is constructed from a seat frame 9 and an outer covering layer, making the seat both stable and lightweight. This cushion structure provides stable support for the seat. The two rotating plates 5 act like solid "bridge piers," and the seat frame 9 is mounted between them, allowing the seat cushion to evenly distribute pressure when bearing the weight of the human body. The two parallel rotating rods in the seat frame 9 are fixed to the inner sides of the rotating plates 5, and a fixing rod 11 is fixed between the rotating rods, forming a frame-like structure. This frame structure enhances the rigidity of the seat frame 9 and effectively prevents deformation or twisting of the seat cushion during use.

[0036] In one or more embodiments of the present invention, a stop shaft 10 is fixed between the two connecting plates 2, and the bent portion of the rear end of the rotating plate 5 is obliquely arranged at the rear end of the rotating rod; when the seat cushion is in a sitting state, the bent portion of the rotating plate 5 abuts against the surface of the stop shaft 10.

[0037] In this embodiment, the stop shaft 10 plays a role of limiting the rotation range of the rotating plate 5; when someone sits on the seat cushion, the rotating plate 5 will be subjected to a certain pressure and tend to rotate. The stop shaft 10 can prevent the rotating plate 5 from excessively rotating, thereby ensuring the safety of the user.

[0038] Working principle of this utility model:

[0039] When the co-pilot sits on the seat cushion, the seat cushion frame 9 is rotated to a flat state by the seat cushion rotating shaft 4. At this time, the blocking shaft 10 makes hard contact with the bent portion of the rotating plate 5, thereby providing a riding function for the co-pilot. At this time, the special-shaped spring 6 is in a state of maximum force;

[0040] After the co-driver leaves the seat cushion, the seat cushion frame 9 is driven by the spring force of the special-shaped spring 6 to rotate counterclockwise, providing convenience for the co-driver to get off the car. At the same time, the base 1 can provide a large amount of storage space. After the seat cushion is folded, the special-shaped spring 6 is in a state of minimum force.

[0041] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "left," "right," and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use, or the positions or locations commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. A novel seat cushion folding mechanism, which is used on a passenger seat of a commercial vehicle, wherein the passenger seat of the commercial vehicle comprises a base (1), a backrest (3) is fixed to the base (1) via a connecting plate (2), a rotatable seat cushion is provided on the inner side of the connecting plate (2), and the seat cushion folding mechanism is provided between the seat cushion and the base (1) so as to fold the seat cushion, and is characterized in that: The seat cushion folding mechanism comprises a rotating plate (5) arranged on the inner side of a connecting plate (2); the connecting plate (2) and the rotating plate (5) are rotatably connected via a rotating shaft (4) and a shaft sleeve; the seat cushion is fixed between the two rotating plates (5); and the rotating plate (5) can rotate with the rotating shaft (4) as a rotating axis.

2. A novel seat cushion folding mechanism according to claim 1, characterized in that: The seat cushion folding mechanism further comprises two special-shaped springs (6) arranged on the inner side of the base (1), one end of the special-shaped spring (6) is fixed on the base (1), and the other end thereof is fixed on the rotating plate (5).

3. A novel seat cushion folding mechanism according to claim 2, characterized in that: A first spring bushing (7) is fixed on the inner side of the base (1), a second spring bushing is fixed on the outer side of the rotating plate (5), and two ends of the special-shaped spring (6) are respectively clamped on the first spring bushing (7) and the second spring bushing.

4. The novel seat cushion folding mechanism according to claim 2, characterized in that: A crossbar (8) is also fixed inside the base (1), and the middle portion of the special-shaped spring (6) abuts against the inner side of the crossbar (8).

5. The novel seat cushion folding mechanism according to claim 1, characterized in that: The seat cushion comprises a seat cushion frame (9) and a covering layer sleeved on the outer surface of the seat cushion frame (9), wherein the seat cushion frame (9) is fixed between the two rotating plates (5); the seat cushion frame (9) comprises two parallel rotating rods, wherein the rotating rods are respectively fixed on the inner sides of the rotating plates (5), and a fixing rod (11) is fixed between the two rotating rods.

6. The novel seat cushion folding mechanism according to claim 5, characterized in that: A stop shaft (10) is fixed between the two connecting plates (2), and the bent portion of the rear end of the rotating plate (5) is tilted and arranged at the rear end of the rotating rod; when the seat cushion is in a sitting state, the bent portion of the rotating plate (5) abuts against the surface of the stop shaft (10).

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