Seat folding supporting mechanism

Abstract

The utility model relates to a seat folding and supporting mechanism which comprises a seat support, a seat folding device and a seat supporting device, the seat folding device comprises a seat cushion lower support, a fixing plate and a fixing shaft, one end of the seat cushion lower support is hinged to the seat support through a pair of rotating shaft assemblies, and the other end of the seat cushion lower support is hinged to the seat support through a pair of rotating shaft assemblies. The fixing plate is connected with the other end of the seat cushion lower support, the two sides of the fixing plate extend downwards to form fixing shaft connecting parts, the two ends of the fixing shaft are connected to the fixing shaft connecting parts, and the seat supporting device corresponds to the fixing plate and can be clamped into or separated from the position between the fixing plate and the fixing shaft. The rotating shaft assembly is arranged on the seat cushion lower support so as to limit or release the rotation of the seat cushion lower support around the rotating shaft assembly, the seat supporting device comprises a fixed seat, a guide screw, a limiting hanging buckle, a movable shaft and a pull switch, and the seat folding supporting mechanism is simple and compact in structure, reliable in supporting and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle-mounted folding seat technical field especially relates to a seat folding support mechanism. BACKGROUND

[0002] With the development of society and technology, the application of electric drive vehicles is more and more widely, such as old age walker, the seat of this kind of vehicle, often needs to be folded and stored due to use requirements.

[0003] The seat of the old age walker in the prior art is partly of fixed structure and inconvenient to fold and store, and the folding structure of the other part is complex, the operation is cumbersome, and the safety is poor. INVENTION CONTENTS

[0004] In view of the above problems, the utility model provides a seat folding support mechanism which is simple and compact in structure, reliable in support and convenient to operate.

[0005] The utility model is realized through the following technical schemes: a seat folding support mechanism, including seat support, seat folding device and seat support device, the seat folding device includes seat cushion lower support, fixed plate, fixed shaft, the seat cushion lower support is used for connecting seat, one end of the seat cushion lower support is hinged on the seat support through a pair of rotating shaft assemblies.

[0006] Further, the rotating shaft assembly includes rotating shaft fixing seat, lower support fixing seat and rotating shaft screw, the rotating shaft fixing seat is fixedly connected on the seat support, the lower support fixing seat has lower support connecting part and hinged part, the lower support connecting part is connected with the seat cushion lower support, the hinged part is hinged on the rotating shaft fixing seat through the rotating shaft screw.

[0007] In order to realize the convenient switching of the two states of the turnover folding and normal use of the seat cushion lower support, the fixed plate is connected at the other end of the seat cushion lower support, the fixed plate has fixed shaft connecting part extending downward on both sides, the fixed shaft is connected on the fixed shaft connecting part, the seat support device is arranged corresponding to the fixed plate and can be clamped into or separated from the fixed plate and the fixed shaft, so as to limit or release the rotation of the seat cushion lower support around the rotating shaft assembly.

[0008] In order to improve the safety and reliability of the seat in the use state and the folding convenience in the non-use state, the seat supporting device comprises a fixed seat, a guide screw, a limiting hanging buckle, a movable shaft and a pulling switch, the fixed seat is fixedly connected to the seat support, one end of the fixed seat away from the lower support of the seat cushion extends upwardly to form a screw connection part, one end of the guide screw is arranged on the screw connection part, limiting plates are upwardly extended from both sides of the fixed seat, limiting grooves are formed in the limiting plates, the limiting hanging buckle is arranged in a cavity surrounded by the screw connection part and the limiting plates and is connected to the other end of the guide screw, a spring is sleeved on the guide screw, the spring is arranged between the limiting hanging buckle and the screw connection part, a movable shaft hole is formed in the middle of the limiting hanging buckle, the movable shaft is arranged in the movable shaft hole and the movable shaft is arranged in the limiting grooves at both ends, one end of the limiting hanging buckle close to the fixed plate has a supporting part, and the pulling switch is fixedly connected to the limiting hanging buckle and can drive the supporting part of the limiting hanging buckle to be clamped into or separated from the fixed plate and the fixed shaft.

[0009] In order to improve the compactness of the structure, reduce the avoiding space when the limiting hanging buckle is separated, and further improve the reliability of the cooperation between the supporting part of the limiting hanging buckle and the fixed plate and the fixed shaft, a guide slope surface is formed on the upper surface of the supporting part of the limiting hanging buckle, an arc surface matched with the fixed shaft is formed on the lower surface of the supporting part, and the guide slope surface and the arc surface are connected through a vertical plane.

[0010] In order to improve the stability of the adjusting process, preferably, the guide screw has two and is symmetrically arranged on the screw connection part.

[0011] The seat folding supporting mechanism has the advantages that the seat folding supporting mechanism is used in combination with the seat supporting device composed of the fixed seat, the guide screw, the limiting hanging buckle, the movable shaft and the pulling switch, the seat folding supporting mechanism can realize the quick switching between the use state and the folding state of the seat, the structure of the seat supporting device is optimized, the folding convenience of the seat and the reliability of the support in the use state are improved, and the safety of the seat is improved, and in addition, the seat folding supporting mechanism has the advantages of simple and compact structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Fig. 1 is a structural schematic view of the seat folding supporting mechanism of the utility model;

[0013] Figure 2 Fig. 2 is a structural schematic view of the seat folding device of the seat folding supporting mechanism of the utility model;

[0014] Figures 3-4 Fig. 3 is a structural schematic view of the seat supporting device of the seat folding supporting mechanism of the utility model;

[0015] Figure 5 Structure diagram of the rotating shaft assembly of the seat folding supporting mechanism of the utility model;

[0016] In the figure: 1. seat support; 2. seat folding device; 21. cushion lower support; 22. fixed plate; 221. fixed shaft connecting part; 23. fixed shaft; 3. seat supporting device; 31. fixed seat; 311. screw connecting part; 312. limiting plate; 3121. limiting groove; 32. guide screw; 33. limiting hanging buckle; 331. supporting part; 3311. guide slope surface; 3312. arc surface; 3313. vertical plane; 332. movable shaft hole; 34. movable shaft; 35. pulling switch; 36. spring; 4. rotating shaft assembly; 41. rotating shaft fixed seat; 42. lower support fixed seat; 421. lower support connecting part; 422. hinged part; 43. rotating shaft screw. DETAILED DESCRIPTION

[0017] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by the people in the field, and the protection scope of the utility model can be more clearly and explicitly defined.

[0018] As Figures 1-5 shown in a kind of seat folding supporting mechanism, including seat support 1, seat folding device 2 and seat supporting device 3, the seat folding device 2 includes cushion lower support 21, fixed plate 22, fixed shaft 23, the cushion lower support 21 one end is hinged in the seat support 1 by a pair of rotating shaft assembly 4, the rotating shaft assembly 4 includes rotating shaft fixed seat 41, lower support fixed seat 42 and rotating shaft screw 43, the rotating shaft fixed seat 41 is fixedly connected on the seat support 1, the lower support fixed seat 42 has lower support connecting part 421 and hinged part 422, the lower support connecting part 421 is connected with the cushion lower support 21, the hinged part 422 is hinged on the rotating shaft fixed seat 41 by rotating shaft screw 43.The fixed plate 22 is connected in cushion lower support 21 other end, the fixed plate 22 both sides extend downward with fixed shaft connecting part 221, the fixed shaft 23 both ends are connected on the fixed shaft connecting part 221.

[0019] The seat supporting device 3 is arranged corresponding to the fixed plate 22 and can be clamped into or out of the fixed plate 22 and the fixed shaft 23 to limit or release the rotation of the seat cushion lower support 21 around the rotating shaft assembly 4. The seat supporting device 3 comprises a fixed seat 31, two guide screws 32, a limiting hanging buckle 33, a movable shaft 34 and a pulling switch 35. The fixed seat 31 is fixedly connected to the seat support 1. An upper screw connecting part 311 is extended upward from one end of the fixed seat 31 away from the seat cushion lower support 21. Two guide screws 32 are symmetrically arranged on the screw connecting part 311. Limiting plates 312 are extended upward from both sides of the fixed seat 31. Limiting grooves 3121 are formed in the limiting plates 312. The limiting hanging buckle 33 is arranged in a cavity surrounded by the screw connecting part 311 and the limiting plates 312 and is connected to the other end of the guide screw 32. A spring 36 is sleeved on the guide screw 32 and is arranged between the limiting hanging buckle 33 and the screw connecting part 311. A movable shaft hole 332 is formed in the middle of the limiting hanging buckle 33. The movable shaft 34 is arranged in the movable shaft hole 332 and the movable shaft 34 is arranged in the limiting grooves 3121 at both ends. The limiting hanging buckle 33 has a supporting part 331 at one end close to the fixed plate 22. The pulling switch 35 is fixedly connected to the limiting hanging buckle 33 and can drive the supporting part 331 of the limiting hanging buckle 33 to be clamped into or out of the fixed plate 22 and the fixed shaft 23.

[0020] An upper guide slope surface 3311 is formed on the upper surface of the supporting part 331 of the limiting hanging buckle 33. A lower arc surface 3312 is formed on the lower surface of the supporting part 331 and is matched with the fixed shaft 23. The guide slope surface 3311 and the arc surface 3312 are connected by a vertical plane 3313.

[0021] The use principle of the seat folding supporting mechanism is as follows:

[0022] When the seat needs to be folded, the pulling switch 35 is pulled away from the seat cushion lower support 21 to drive the limiting hanging buckle 33 to move away from the seat cushion lower support 21 in the fixed seat 31, so that the supporting part 331 of the limiting hanging buckle 33 is out of the fixed plate 22 and the fixed shaft 23. At this time, the seat cushion lower support 21 is in an unsupported state. The seat cushion lower support 21 and the seat on the seat cushion lower support 21 are turned forward and downward around the rotating shaft assembly 4, and the folding is completed. When the seat needs to be restored to the use state, the seat cushion lower support 21 is only needed to be turned reversely to the initial position. The limiting hanging buckle 33 is bounced back under the action of the spring 36. The supporting part 331 of the limiting hanging buckle 33 is clamped into the fixed plate 22 and the fixed shaft 23 again, and the seat cushion lower support 21 is supported, so that the reset and unfolding are completed.

[0023] In the above process, the movable shaft 34 can well limit the displacement distance of the limiting hanging buckle 33, and ensure that the supporting part 331 is accurately disengaged or clamped between the fixed plate 22 and the fixed shaft 23.

[0024] In the description of the present application, it should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In addition, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting", "provided with" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Finally, it should be pointed out that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit it, the protection scope of the present application is not limited to this, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any skilled in the art within the technical range disclosed by the present application, they can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A seat folding support mechanism characterized by: The seat folding device comprises a seat cushion lower support, a fixed plate, and a fixed shaft. One end of the seat cushion lower support is hingedly connected to the seat support frame through a pair of rotating shaft assemblies. The fixed plate is connected to the other end of the seat cushion lower support. Fixed shaft connecting portions are extended downward from both sides of the fixed plate. The fixed shaft is connected to both ends of the fixed shaft connecting portions. The seat supporting device is arranged corresponding to the fixed plate and can be clamped into or separated from the fixed plate and the fixed shaft to restrict or release the rotation of the seat cushion lower support around the rotating shaft assemblies. The seat supporting device comprises a fixed seat, a guide screw, a limiting hanging buckle, a movable shaft, and a pulling switch. The fixed seat is fixedly connected to the seat support frame. A screw connecting portion is extended upward from the end of the fixed seat away from the seat cushion lower support. One end of the guide screw is arranged on the screw connecting portion. Limiting plates are extended upward from both sides of the fixed seat. Limiting grooves are formed in the limiting plates. The limiting hanging buckle is arranged in the cavity surrounded by the screw connecting portion and the limiting plates and is connected to the other end of the guide screw. A spring is sleeved on the guide screw and is arranged between the limiting hanging buckle and the screw connecting portion. A movable shaft hole is formed in the limiting hanging buckle. The movable shaft is arranged in the movable shaft hole and the ends of the movable shaft are arranged in the limiting grooves. The end of the limiting hanging buckle close to the fixed plate has a supporting portion. The pulling switch is fixedly connected to the limiting hanging buckle and can drive the supporting portion of the limiting hanging buckle to be clamped into or separated from the fixed plate and the fixed shaft.

2. The seat folding support mechanism according to claim 1, characterized by: An upper surface of the supporting portion of the limiting hanging buckle is provided with a guide slope, and a lower surface of the supporting portion is provided with an arc surface matching the fixed shaft. The guide slope and the arc surface are connected through a vertical plane.

3. The seat folding support mechanism according to claim 1, characterized by: The guide screw has two symmetrically arranged screw connecting portions.

4. The seat folding support mechanism according to claim 1, wherein: The rotating shaft assembly comprises a rotating shaft fixed seat, a lower support fixed seat, and a rotating shaft screw. The rotating shaft fixed seat is fixedly connected to the seat support frame. The lower support fixed seat has a lower support connecting portion and a hinge portion. The lower support connecting portion is connected to the seat cushion lower support. The hinge portion is hingedly connected to the rotating shaft fixed seat through the rotating shaft screw.

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