Folding seat

Abstract

The utility model discloses a folding seat, including box body, can expand the cushion adopts the layered design of main cushion, first vice cushion and second vice cushion, cooperate the hinged structure of multi-connecting rod mechanism and hinge, formed the folding and unfolding ability of ladder type, when single person operation, can first along the hinge of second vice cushion fold to the below of first vice cushion, in through multi-connecting rod mechanism and first vice cushion are folded to the main cushion direction, the cockpit space originally occupied by vice driver's seat can directly convert into tool storage area or personnel activity passageway, effectively solved the problem of no place to store tool, spare parts when single person operation of wheat harvester, improved cockpit space utilization, and when two people cooperate, only need to reverse operation to quickly unfold each layer cushion, form complete two people ride space, satisfy the carrying demand of field observer, auxiliary operator, realize one person operation space saving, two people cooperation comfortable dynamic adaptation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery parts technology, specifically to a folding seat. Background Technology

[0002] With the rapid development of agricultural mechanization, large agricultural machinery such as wheat harvesters have become core equipment in modern agricultural production. Their operating efficiency and operational comfort directly affect the progress of agricultural production and the working experience of operators. As the main working space for operators, the cab of the wheat harvester has a crucial internal layout and space utilization rate. It must not only meet the daily driving and operation control needs of operators, but also reserve necessary space for equipment maintenance and tool storage. Therefore, the structural design of each component in the cab must take into account both practicality and space optimization capabilities. The co-driver's seat, as an important part of the wheat harvester's cab, is mainly used to carry collaborating personnel or provide temporary rest space.

[0003] However, the co-driver's seat of existing wheat harvesters is mostly fixed, and the space it occupies is relatively fixed. When the harvester only needs to be operated by one person, the fixed seat will continuously occupy the effective space in the cab, resulting in nowhere to store tools, spare parts and other items, and even affecting the operator's flexibility of movement in the cab. Therefore, we need to propose a folding seat. Utility Model Content

[0004] The purpose of this utility model is to provide a folding seat. By setting an expandable seat with a layered design of a main seat cushion, a first secondary seat cushion and a second secondary seat cushion, and in conjunction with a multi-link mechanism and hinges, it achieves a dynamic adaptation effect of folding to save space for storing tools when working alone, and quickly unfolding for riding when working with two people, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A folding seat includes: a housing with an expandable seat cushion on top, the expandable seat cushion comprising, from bottom to top, a main seat cushion, a first secondary seat cushion, and a second secondary seat cushion; the first secondary seat cushion is connected to the main seat cushion via two sets of multi-link mechanisms, allowing the first secondary seat cushion to be folded; one side of the second secondary seat cushion is hinged to the first secondary seat cushion, allowing for further folding; an auxiliary support assembly is provided at the bottom of the second secondary seat cushion; and a power assembly facilitates the opening and closing of the expandable seat cushion as a whole, thereby facilitating the maintenance of components inside the housing, with the movable end of the power assembly connected to the bottom of the main seat cushion.

[0007] Preferably, the power assembly includes a fixed rod, with both ends of the fixed rod fixedly connected to the inner walls of both sides of the housing. A first hinge seat is fixedly connected to the top of the fixed rod, and an electric push rod is hinged to the top of the first hinge seat. A second hinge seat is hinged to the top of the telescopic end of the electric push rod, and a support frame is fixedly connected to the top of the second hinge seat.

[0008] Preferably, one side of the support frame is hinged to the top of the housing via a hinge, and the main seat cushion is fixedly connected to the top of the support frame.

[0009] Preferably, it also includes a lifting handle, which is fixedly connected to one side wall of the support frame.

[0010] Preferably, the auxiliary support assembly includes two sets of rotating seats, both sets of rotating seats are fixedly connected to the bottom of the second seat cushion, and one side of both sets of rotating seats is rotatably connected to a reinforced support leg.

[0011] Preferably, it also includes two sets of limiting blocks for limiting the reinforced legs to provide stable support for the second seat cushion, one side of which abuts against the side wall of the reinforced legs in the unfolded state.

[0012] Preferably, the multi-link mechanism includes a first connector, a first link, a second link, and a second connector. The first connector is fixedly connected to the bottom of the main seat cushion. One end of the first link is slidably connected to the first connector via a pin. The other end of the first connector is rotatably connected to the end of the second connector via a pivot. The first link and the second link are rotatably connected via two pivots, and the end of the second link is connected to the second connector via a pin.

[0013] Preferably, a limiting rod for maintaining the stability of the first seat cushion when unfolded is fixedly connected to the outer wall of the first connecting rod, and a limiting groove adapted to the outer wall of the limiting rod is opened at the bottom of the second connecting rod, and the top of the limiting rod is engaged with the inside of the limiting groove.

[0014] Preferably, when the first and second seat cushions are folded, they are secured by snap-locks on adjacent surfaces.

[0015] Preferably, both the first connector and the second connector have limiting grooves, and the pins at the ends of the first connector and the second connector are slidably connected to the inside of the two sets of limiting grooves.

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

[0017] This utility model's expandable seat cushion adopts a layered design of a main seat cushion, a first secondary seat cushion, and a second secondary seat cushion. Combined with a multi-link mechanism and a hinged structure, it forms a stepped folding and unfolding capability, breaking through the space limitations of traditional seats that occupy or leave the space completely empty. In single-person operation scenarios, the second secondary seat cushion can be folded down along the hinge to the bottom of the first secondary seat cushion. Then, the first secondary seat cushion can be folded back towards the main seat cushion through the multi-link mechanism. The cab space originally occupied by the co-driver's seat can be directly converted into a tool storage area or personnel movement passage, effectively solving the problem of where to store tools and spare parts when operating a wheat harvester alone, and improving the utilization rate of the cab space. In two-person collaborative operation scenarios, each layer of seat cushions can be quickly unfolded by simply operating in reverse to form a complete two-person seating space, meeting the needs of field observers and assistant operators, and achieving a dynamic adaptation of "saving space for one person's operation and providing sufficient comfort for two people's collaboration". Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the expandable seat cushion of this utility model in the open and maintenance state;

[0019] Figure 2 This is a schematic diagram of the power component of this utility model;

[0020] Figure 3 This is a schematic diagram of the expandable seat cushion of this utility model in a folded, half-open state.

[0021] Figure 4 This is a schematic diagram of the multi-link mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the fully extended seat cushion of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the second seat cushion and auxiliary support assembly of this utility model;

[0024] Figure 7 This is a schematic diagram of the fully folded expandable seat cushion of this utility model;

[0025] Figure 8 This is an axonometric view of the fully folded expandable seat cushion of this utility model;

[0026] Figure 9 This is a schematic diagram of the structure of the second seat cushion and buckle of this utility model.

[0027] In the diagram: 1. Box body; 2. Expandable seat cushion; 21. Main seat cushion; 22. First auxiliary seat cushion; 23. Second auxiliary seat cushion; 24. Multi-link mechanism; 2401. First connecting piece; 2402. First link; 2403. Second link; 2404. Second connecting piece; 2405. Limiting rod; 2406. Limiting groove; 25. Auxiliary support assembly; 2501. Rotating seat; 2502. Reinforced support leg; 2503. Limiting block; 3. Power assembly; 301. Fixed rod; 302. First hinge seat; 303. Electric push rod; 304. Second hinge seat; 305. Support frame; 306. Lifting handle; 4. Buckle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-9 This utility model provides a technical solution:

[0030] The folding seat includes: a housing 1, with an expandable seat cushion 2 on top. The expandable seat cushion 2, from bottom to top, includes a main seat cushion 21, a first secondary seat cushion 22, and a second secondary seat cushion 23. The first secondary seat cushion 22 is connected to the main seat cushion 21 via two sets of multi-link mechanisms 24, which can fold the first secondary seat cushion 22. One side of the second secondary seat cushion 23 is hinged to the first secondary seat cushion 22, allowing for further folding. An auxiliary support component 25 is provided at the bottom of the second secondary seat cushion 23. By setting up the layered structure of the expandable seat cushion 2 and the matching folding connection components, combined with the stabilizing effect of the auxiliary support component 25, not only can the seat cushion be flexibly folded and unfolded, but it can also provide reliable support for passengers when unfolded, ensuring seating stability. This provides a solid structural foundation for the dynamic adjustment of the cab space and adapts to the space requirements of different operating scenarios of wheat harvesters.

[0031] Furthermore, the folding seat also includes a power component 3 that facilitates the opening and closing of the expandable seat cushion 2 as a whole, thereby facilitating the inspection and maintenance of the internal components of the housing 1. The movable end of the power component 3 is connected to the bottom of the main seat cushion 21. By setting the power component 3, which is linked to the main seat cushion 21, the expandable seat cushion 2 can be directly driven to open and close, quickly exposing the internal space of the housing 1. This eliminates the cumbersome steps of traditional seat disassembly, greatly improves the convenience of component inspection and maintenance, and reduces equipment downtime for maintenance.

[0032] In this embodiment, the power assembly 3 includes a fixed rod 301, with both ends of the fixed rod 301 fixedly connected to the inner walls of both sides of the housing 1. A first hinge seat 302 is fixedly connected to the top of the fixed rod 301, and an electric push rod 303 is hinged to the top of the first hinge seat 302. A second hinge seat 304 is hinged to the top of the telescopic end of the electric push rod 303, and a support frame 305 is fixedly connected to the top of the second hinge seat 304. By setting the hinged transmission structure of "fixed rod 301-electric push rod 303-support frame 305", the linear telescopic action of the electric push rod 303 can be stably converted into the flipping action of the support frame 305, avoiding jamming or deviation in the power transmission process and ensuring the reliability and stability of power transmission.

[0033] Furthermore, one side of the support frame 305 is hinged to the top of the housing 1 via a hinge, and the main seat cushion 21 is fixedly connected to the top of the support frame 305. By setting the hinge structure between the support frame 305 and the housing 1 and the fixed connection with the main seat cushion 21, the support frame 305 can rotate smoothly around the hinge point, thereby driving the main seat cushion 21 to move synchronously, ensuring that the overall opening and closing process of the expandable seat cushion 2 is smooth. At the same time, the support frame 305 can also provide a stable load-bearing foundation for the main seat cushion 21.

[0034] It is worth noting that the folding seat also includes a lifting handle 306, which is fixedly connected to one side wall of the support frame 305. By setting the lifting handle 306 fixed on the support frame 305, when the power component 3 fails to work properly, the operator can manually operate the opening and closing of the support frame 305 by pulling the lifting handle 306, which effectively avoids the problem of maintenance work being unable to be carried out due to power failure, and improves the fault tolerance and reliability of the equipment.

[0035] In this embodiment, the auxiliary support component 25 includes two sets of rotating seats 2501. Both sets of rotating seats 2501 are fixedly connected to the bottom of the second seat cushion 23, and one side of both sets of rotating seats 2501 is rotatably connected to a reinforcing leg 2502. By setting the rotating connection structure between the two sets of rotating seats 2501 and the reinforcing leg 2502, the reinforcing leg 2502 can be flexibly extended and retracted around the rotating seat 2501. When the second seat cushion 23 is unfolded, the reinforcing leg 2502 can be lowered to provide bottom support and enhance the load-bearing capacity of the second seat cushion 23.

[0036] Furthermore, the folding seat also includes two sets of limiting blocks 2503 for limiting the reinforced leg 2502 to provide stable support for the second seat cushion 23. One side of the limiting block 2503 abuts against the side wall of the reinforced leg 2502 in the unfolded state. By setting the limiting block 2503 that abuts against the reinforced leg 2502 in the unfolded state, the rotational deviation of the reinforced leg 2502 can be effectively limited when it is subjected to force, so that the reinforced leg 2502 maintains a stable support posture, further improving the support stability and riding safety of the second seat cushion 23.

[0037] In this embodiment, the multi-link mechanism 24 includes a first connector 2401, a first link 2402, a second link 2403, and a second connector 2404. The first connector 2401 is fixedly connected to the bottom of the main seat cushion 21. One end of the first link 2402 is slidably connected to the first connector 2401 via a pin. The other end of the first connector 2401 is rotatably connected to the end of the second connector 2404 via a pivot. The first link 2402 and the second link 2403 are rotatably connected via two pivots, and the end of the second link 2403 is connected to the second connector 2404 via a pin. By setting up the multi-link mechanism 24 with multiple components linked, the first sub-seat cushion 22 can be smoothly folded around the main seat cushion 21. The linkage structure of the multi-link can distribute the force during the folding process, ensuring uniform force during folding and unfolding, and avoiding excessive local stress that could lead to structural damage.

[0038] Furthermore, a limiting rod 2405 for maintaining the stability of the first seat cushion 22 during unfolding is fixedly connected to the outer wall of the first connecting rod 2402. A limiting groove 2406 adapted to the outer wall of the limiting rod 2405 is provided at the bottom of the second connecting rod 2403. The top of the limiting rod 2405 is engaged with the inside of the limiting groove 2406. By setting the mutually engaged limiting rod 2405 and limiting groove 2406, when the multi-link mechanism 24 is unfolded, the limiting rod 2405 and limiting groove 2406 form a mechanical limit, which can restrict the relative rotation of the first connecting rod 2402 and the second connecting rod 2403, maintain the stability of the multi-link mechanism 24 in the unfolded state, and effectively prevent the first seat cushion 22 from collapsing due to force. Limiting grooves are provided on both the first connecting member 2401 and the second connecting member 2404. The pins on the ends of the first connecting member 2401 and the second connecting member 2404 are slidably connected to the inside of the two sets of limiting grooves.

[0039] It is worth noting that when the first seat cushion 22 and the second seat cushion 23 are folded, they are locked in place by the buckles 4 set on the adjacent surfaces. By setting the buckles 4 that cooperate with each other in the folded state, the first seat cushion 22 and the second seat cushion 23 can be tightly fixed together to form an integral structure, which can prevent them from becoming loose and shaking in the bumpy working environment of the wheat harvester and ensure the stability of the folded state.

[0040] Working principle: This folding chair achieves the dual goals of space adjustment and convenient maintenance through the coordinated operation of its various structures. Its specific working principle can be divided into the following three modes according to different usage scenarios:

[0041] Two-person seating mode: When two people need to work together, the expandable seat 2 can be adjusted to the fully unfolded state. At this time, the limiting rod 2405 in the multi-link mechanism 24 is engaged in the limiting groove 2406, so that the multi-link mechanism 24 maintains a stable extended posture, and the first seat 22 is firmly supported on one side of the main seat 21; then the second seat 23 is flipped around the hinge to a position flush with the first seat 22, and the reinforced support leg 2502 is rotated until it abuts against the limiting block 2503. The reinforced support leg 2502 maintains stable support under the action of the limiting block 2503. At this time, the main seat 21, the first seat 22, and the second seat 23 together form a complete two-person seating space, which can meet the riding needs of field observers and assistant operators, and ensure riding comfort and safety.

[0042] Single-person operation mode: When only one person is required to operate, the expandable seat 2 needs to be folded to save space. During operation, first rotate the reinforced support leg 2502 to disengage it from the limiting block 2503 and fold it to the bottom of the second seat 23; then fold the second seat 23 around the hinge to the bottom of the first seat 22, and press the buckle 4 to complete the initial fixation; subsequently, push the first seat 22 towards the main seat 21, causing the first link 2402 and the second link 2403 in the multi-link mechanism 24 to rotate relative to each other, the limiting rod 2405 disengages from the limiting groove 2406, and the first seat 22, along with the second seat 23, folds and retracts towards the main seat 21, finally locking the entire structure. At this time, the space occupied by the expandable seat 2 is significantly reduced, and the freed-up cockpit area can be used to store tools, spare parts, or as a personnel movement passage, effectively improving the utilization rate of the cockpit space.

[0043] Maintenance Mode: When maintenance is required on the internal components of the enclosure 1, first adjust the expandable seat 2 to the folded state, then activate the electric actuator 303 in the power assembly 3. The telescopic end of the electric actuator 303 extends, pushing the support frame 305 through the second hinge seat 304. The support frame 305 flips upward around the hinge point with the enclosure 1, causing the main seat 21 and the folded expandable seat 2 to rise as a whole, fully exposing the top of the enclosure 1, facilitating maintenance of the internal components. If the electric actuator 303 malfunctions, the operator can manually flip the support frame 305 by pulling the handle 306 to ensure that the maintenance work is not affected. After maintenance is completed, control the electric actuator 303 to retract, and the support frame 305 will synchronously reset the expandable seat 2. The operator can then switch the expandable seat 2 to the corresponding mode according to subsequent work requirements.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding seat, characterized in that, include: The box body (1) has an expandable seat cushion (2) on its top. The expandable seat cushion (2) includes a main seat cushion (21), a first secondary seat cushion (22) and a second secondary seat cushion (23) from bottom to top. The first secondary seat cushion (22) is connected to the main seat cushion (21) through two sets of multi-link mechanisms (24). One side of the second secondary seat cushion (23) is hinged to the first secondary seat cushion (22) through a hinge. An auxiliary support component (25) is provided at the bottom of the second secondary seat cushion (23). The power assembly (3) facilitates the opening and closing of the expandable seat cushion (2) as a whole, thereby facilitating the maintenance of the internal components of the housing (1), and the movable end of the power assembly (3) is connected to the bottom of the main seat cushion (21).

2. The folding seat according to claim 1, characterized in that: The power assembly (3) includes a fixed rod (301), the two ends of which are fixedly connected to the inner walls of the two sides of the housing (1). A first hinge seat (302) is fixedly connected to the top of the fixed rod (301). An electric push rod (303) is hinged to the top of the first hinge seat (302). A second hinge seat (304) is hinged to the top of the telescopic end of the electric push rod (303). A support frame (305) is fixedly connected to the top of the second hinge seat (304).

3. The folding seat according to claim 2, characterized in that: One side of the support frame (305) is hinged to the top of the box (1) via a hinge, and the main seat cushion (21) is fixedly connected to the top of the support frame (305).

4. The folding seat according to claim 3, characterized in that: It also includes a lifting handle (306), which is fixedly connected to one side wall of the support frame (305).

5. The folding seat according to claim 1, characterized in that: The auxiliary support assembly (25) includes two sets of rotating seats (2501), both sets of rotating seats (2501) are fixedly connected to the bottom of the second seat cushion (23), and one side of the two sets of rotating seats (2501) is rotatably connected to a reinforced support leg (2502).

6. The folding seat according to claim 5, characterized in that: It also includes two sets of limiting blocks (2503) for limiting the reinforced leg (2502) to provide stable support for the second seat cushion (23), one side of the limiting block (2503) abutting against the side wall of the reinforced leg (2502) in the unfolded state.

7. The folding seat according to claim 1, characterized in that: The multi-link mechanism (24) includes a first connector (2401), a first link (2402), a second link (2403), and a second connector (2404). The first connector (2401) is fixedly connected to the bottom of the main seat cushion (21). One end of the first link (2402) is slidably connected to the first connector (2401) via a pin. The other end of the first connector (2401) is rotatably connected to the end of the second connector (2404) via a pivot. The first link (2402) and the second link (2403) are rotatably connected via two pivots, and the end of the second link (2403) is connected to the second connector (2404) via a pin.

8. The folding seat according to claim 7, characterized in that: A limiting rod (2405) for maintaining the stability of the first seat cushion (22) is fixedly connected to the outer wall of the first connecting rod (2402). A limiting groove (2406) adapted to the outer wall of the limiting rod (2405) is opened at the bottom of the second connecting rod (2403). The top of the limiting rod (2405) is engaged in the inside of the limiting groove (2406).

9. The folding seat according to claim 1, characterized in that: When the first seat cushion (22) and the second seat cushion (23) are folded, they are locked in place by buckles (4) provided on adjacent surfaces.

10. The folding seat according to claim 7, characterized in that: Both the first connector (2401) and the second connector (2404) have limiting grooves, and the pins on the ends of the first connector (2401) and the second connector (2404) are slidably connected to the inside of the two sets of limiting grooves.

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